diff options
Diffstat (limited to 'src/openvpn/tun.c')
| -rw-r--r-- | src/openvpn/tun.c | 8871 |
1 files changed, 4704 insertions, 4167 deletions
diff --git a/src/openvpn/tun.c b/src/openvpn/tun.c index 572e168..f812844 100644 --- a/src/openvpn/tun.c +++ b/src/openvpn/tun.c @@ -5,7 +5,7 @@ * packet encryption, packet authentication, and * packet compression. * - * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net> + * Copyright (C) 2002-2017 OpenVPN Technologies, Inc. <sales@openvpn.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 @@ -63,150 +63,157 @@ #define NI_IP_NETMASK (1<<1) #define NI_OPTIONS (1<<2) -static void netsh_ifconfig (const struct tuntap_options *to, - const char *flex_name, - const in_addr_t ip, - const in_addr_t netmask, - const unsigned int flags); -static void netsh_set_dns6_servers (const struct in6_addr *addr_list, - const int addr_len, - const char *flex_name); -static void netsh_command (const struct argv *a, int n, int msglevel); +static void netsh_ifconfig(const struct tuntap_options *to, + const char *flex_name, + const in_addr_t ip, + const in_addr_t netmask, + const unsigned int flags); -static const char *netsh_get_id (const char *dev_node, struct gc_arena *gc); +static void netsh_set_dns6_servers(const struct in6_addr *addr_list, + const int addr_len, + const char *flex_name); -static DWORD get_adapter_index_flexible (const char *name); +static void netsh_command(const struct argv *a, int n, int msglevel); + +static const char *netsh_get_id(const char *dev_node, struct gc_arena *gc); + +static DWORD get_adapter_index_flexible(const char *name); static bool -do_address_service (const bool add, const short family, const struct tuntap *tt) +do_address_service(const bool add, const short family, const struct tuntap *tt) { - DWORD len; - bool ret = false; - ack_message_t ack; - struct gc_arena gc = gc_new (); - HANDLE pipe = tt->options.msg_channel; + DWORD len; + bool ret = false; + ack_message_t ack; + struct gc_arena gc = gc_new(); + HANDLE pipe = tt->options.msg_channel; - address_message_t addr = { - .header = { - (add ? msg_add_address : msg_del_address), - sizeof (address_message_t), - 0 }, - .family = family, - .iface = { .index = tt->adapter_index, .name = "" } - }; + address_message_t addr = { + .header = { + (add ? msg_add_address : msg_del_address), + sizeof(address_message_t), + 0 + }, + .family = family, + .iface = { .index = tt->adapter_index, .name = "" } + }; - if (addr.iface.index == TUN_ADAPTER_INDEX_INVALID) + if (addr.iface.index == TUN_ADAPTER_INDEX_INVALID) { - strncpy (addr.iface.name, tt->actual_name, sizeof (addr.iface.name)); - addr.iface.name[sizeof (addr.iface.name) - 1] = '\0'; + strncpy(addr.iface.name, tt->actual_name, sizeof(addr.iface.name)); + addr.iface.name[sizeof(addr.iface.name) - 1] = '\0'; } - if (addr.family == AF_INET) + if (addr.family == AF_INET) { - addr.address.ipv4.s_addr = tt->local; - addr.prefix_len = 32; + addr.address.ipv4.s_addr = tt->local; + addr.prefix_len = 32; } - else + else { - addr.address.ipv6 = tt->local_ipv6; - addr.prefix_len = tt->netbits_ipv6; + addr.address.ipv6 = tt->local_ipv6; + addr.prefix_len = tt->netbits_ipv6; } - if (!WriteFile (pipe, &addr, sizeof (addr), &len, NULL) || - !ReadFile (pipe, &ack, sizeof (ack), &len, NULL)) + if (!WriteFile(pipe, &addr, sizeof(addr), &len, NULL) + || !ReadFile(pipe, &ack, sizeof(ack), &len, NULL)) { - msg (M_WARN, "TUN: could not talk to service: %s [%lu]", - strerror_win32 (GetLastError (), &gc), GetLastError ()); - goto out; + msg(M_WARN, "TUN: could not talk to service: %s [%lu]", + strerror_win32(GetLastError(), &gc), GetLastError()); + goto out; } - if (ack.error_number != NO_ERROR) + if (ack.error_number != NO_ERROR) { - msg (M_WARN, "TUN: %s address failed using service: %s [status=%u if_index=%lu]", - (add ? "adding" : "deleting"), strerror_win32 (ack.error_number, &gc), - ack.error_number, addr.iface.index); - goto out; + msg(M_WARN, "TUN: %s address failed using service: %s [status=%u if_index=%lu]", + (add ? "adding" : "deleting"), strerror_win32(ack.error_number, &gc), + ack.error_number, addr.iface.index); + goto out; } - ret = true; + ret = true; out: - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } static bool -do_dns6_service (bool add, const struct tuntap *tt) +do_dns6_service(bool add, const struct tuntap *tt) { - DWORD len; - bool ret = false; - ack_message_t ack; - struct gc_arena gc = gc_new (); - HANDLE pipe = tt->options.msg_channel; - int addr_len = add ? tt->options.dns6_len : 0; + DWORD len; + bool ret = false; + ack_message_t ack; + struct gc_arena gc = gc_new(); + HANDLE pipe = tt->options.msg_channel; + int addr_len = add ? tt->options.dns6_len : 0; - if (addr_len == 0 && add) /* no addresses to add */ - return true; + if (addr_len == 0 && add) /* no addresses to add */ + { + return true; + } - dns_cfg_message_t dns = { - .header = { - (add ? msg_add_dns_cfg : msg_del_dns_cfg), - sizeof (dns_cfg_message_t), - 0 }, - .iface = { .index = tt->adapter_index, .name = "" }, - .domains = "", - .family = AF_INET6, - .addr_len = addr_len - }; + dns_cfg_message_t dns = { + .header = { + (add ? msg_add_dns_cfg : msg_del_dns_cfg), + sizeof(dns_cfg_message_t), + 0 + }, + .iface = { .index = tt->adapter_index, .name = "" }, + .domains = "", + .family = AF_INET6, + .addr_len = addr_len + }; - /* interface name is required */ - strncpy (dns.iface.name, tt->actual_name, sizeof (dns.iface.name)); - dns.iface.name[sizeof (dns.iface.name) - 1] = '\0'; + /* interface name is required */ + strncpy(dns.iface.name, tt->actual_name, sizeof(dns.iface.name)); + dns.iface.name[sizeof(dns.iface.name) - 1] = '\0'; - if (addr_len > _countof(dns.addr)) + if (addr_len > _countof(dns.addr)) { - addr_len = _countof(dns.addr); - dns.addr_len = addr_len; - msg(M_WARN, "Number of IPv6 DNS addresses sent to service truncated to %d", - addr_len); + addr_len = _countof(dns.addr); + dns.addr_len = addr_len; + msg(M_WARN, "Number of IPv6 DNS addresses sent to service truncated to %d", + addr_len); } - for (int i = 0; i < addr_len; ++i) + for (int i = 0; i < addr_len; ++i) { - dns.addr[i].ipv6 = tt->options.dns6[i]; + dns.addr[i].ipv6 = tt->options.dns6[i]; } - msg (D_LOW, "%s IPv6 dns servers on '%s' (if_index = %d) using service", - (add ? "Setting" : "Deleting"), dns.iface.name, dns.iface.index); + msg(D_LOW, "%s IPv6 dns servers on '%s' (if_index = %d) using service", + (add ? "Setting" : "Deleting"), dns.iface.name, dns.iface.index); - if (!WriteFile (pipe, &dns, sizeof (dns), &len, NULL) || - !ReadFile (pipe, &ack, sizeof (ack), &len, NULL)) + if (!WriteFile(pipe, &dns, sizeof(dns), &len, NULL) + || !ReadFile(pipe, &ack, sizeof(ack), &len, NULL)) { - msg (M_WARN, "TUN: could not talk to service: %s [%lu]", - strerror_win32 (GetLastError (), &gc), GetLastError ()); - goto out; + msg(M_WARN, "TUN: could not talk to service: %s [%lu]", + strerror_win32(GetLastError(), &gc), GetLastError()); + goto out; } - if (ack.error_number != NO_ERROR) + if (ack.error_number != NO_ERROR) { - msg (M_WARN, "TUN: %s IPv6 dns failed using service: %s [status=%u if_name=%s]", - (add ? "adding" : "deleting"), strerror_win32 (ack.error_number, &gc), - ack.error_number, dns.iface.name); - goto out; + msg(M_WARN, "TUN: %s IPv6 dns failed using service: %s [status=%u if_name=%s]", + (add ? "adding" : "deleting"), strerror_win32(ack.error_number, &gc), + ack.error_number, dns.iface.name); + goto out; } - msg (M_INFO, "IPv6 dns servers %s using service", (add ? "set" : "deleted")); - ret = true; + msg(M_INFO, "IPv6 dns servers %s using service", (add ? "set" : "deleted")); + ret = true; out: - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } -#endif +#endif /* ifdef _WIN32 */ #ifdef TARGET_SOLARIS -static void solaris_error_close (struct tuntap *tt, const struct env_set *es, const char *actual, bool unplumb_inet6); +static void solaris_error_close(struct tuntap *tt, const struct env_set *es, const char *actual, bool unplumb_inet6); + #include <stropts.h> #endif @@ -216,46 +223,63 @@ static void solaris_error_close (struct tuntap *tt, const struct env_set *es, co #include <sys/sys_domain.h> #endif -static void clear_tuntap (struct tuntap *tuntap); +static void clear_tuntap(struct tuntap *tuntap); bool -is_dev_type (const char *dev, const char *dev_type, const char *match_type) +is_dev_type(const char *dev, const char *dev_type, const char *match_type) { - ASSERT (match_type); - if (!dev) - return false; - if (dev_type) - return !strcmp (dev_type, match_type); - else - return !strncmp (dev, match_type, strlen (match_type)); + ASSERT(match_type); + if (!dev) + { + return false; + } + if (dev_type) + { + return !strcmp(dev_type, match_type); + } + else + { + return !strncmp(dev, match_type, strlen(match_type)); + } } int -dev_type_enum (const char *dev, const char *dev_type) +dev_type_enum(const char *dev, const char *dev_type) { - if (is_dev_type (dev, dev_type, "tun")) - return DEV_TYPE_TUN; - else if (is_dev_type (dev, dev_type, "tap")) - return DEV_TYPE_TAP; - else if (is_dev_type (dev, dev_type, "null")) - return DEV_TYPE_NULL; - else - return DEV_TYPE_UNDEF; + if (is_dev_type(dev, dev_type, "tun")) + { + return DEV_TYPE_TUN; + } + else if (is_dev_type(dev, dev_type, "tap")) + { + return DEV_TYPE_TAP; + } + else if (is_dev_type(dev, dev_type, "null")) + { + return DEV_TYPE_NULL; + } + else + { + return DEV_TYPE_UNDEF; + } } const char * -dev_type_string (const char *dev, const char *dev_type) +dev_type_string(const char *dev, const char *dev_type) { - switch (dev_type_enum (dev, dev_type)) + switch (dev_type_enum(dev, dev_type)) { - case DEV_TYPE_TUN: - return "tun"; - case DEV_TYPE_TAP: - return "tap"; - case DEV_TYPE_NULL: - return "null"; - default: - return "[unknown-dev-type]"; + case DEV_TYPE_TUN: + return "tun"; + + case DEV_TYPE_TAP: + return "tap"; + + case DEV_TYPE_NULL: + return "null"; + + default: + return "[unknown-dev-type]"; } } @@ -264,21 +288,21 @@ dev_type_string (const char *dev, const char *dev_type) * before the device is actually opened. */ const char * -guess_tuntap_dev (const char *dev, - const char *dev_type, - const char *dev_node, - struct gc_arena *gc) +guess_tuntap_dev(const char *dev, + const char *dev_type, + const char *dev_node, + struct gc_arena *gc) { #ifdef _WIN32 - const int dt = dev_type_enum (dev, dev_type); - if (dt == DEV_TYPE_TUN || dt == DEV_TYPE_TAP) + const int dt = dev_type_enum(dev, dev_type); + if (dt == DEV_TYPE_TUN || dt == DEV_TYPE_TAP) { - return netsh_get_id (dev_node, gc); + return netsh_get_id(dev_node, gc); } #endif - /* default case */ - return dev; + /* default case */ + return dev; } @@ -293,34 +317,38 @@ static const char ifconfig_warn_how_to_silence[] = "(silence this warning with - * like an IPv4 address. */ static void -ifconfig_sanity_check (bool tun, in_addr_t addr, int topology) +ifconfig_sanity_check(bool tun, in_addr_t addr, int topology) { - struct gc_arena gc = gc_new (); - const bool looks_like_netmask = ((addr & 0xFF000000) == 0xFF000000); - if (tun) + struct gc_arena gc = gc_new(); + const bool looks_like_netmask = ((addr & 0xFF000000) == 0xFF000000); + if (tun) { - if (looks_like_netmask && (topology == TOP_NET30 || topology == TOP_P2P)) - msg (M_WARN, "WARNING: Since you are using --dev tun with a point-to-point topology, the second argument to --ifconfig must be an IP address. You are using something (%s) that looks more like a netmask. %s", - print_in_addr_t (addr, 0, &gc), - ifconfig_warn_how_to_silence); + if (looks_like_netmask && (topology == TOP_NET30 || topology == TOP_P2P)) + { + msg(M_WARN, "WARNING: Since you are using --dev tun with a point-to-point topology, the second argument to --ifconfig must be an IP address. You are using something (%s) that looks more like a netmask. %s", + print_in_addr_t(addr, 0, &gc), + ifconfig_warn_how_to_silence); + } } - else /* tap */ + else /* tap */ { - if (!looks_like_netmask) - msg (M_WARN, "WARNING: Since you are using --dev tap, the second argument to --ifconfig must be a netmask, for example something like 255.255.255.0. %s", - ifconfig_warn_how_to_silence); + if (!looks_like_netmask) + { + msg(M_WARN, "WARNING: Since you are using --dev tap, the second argument to --ifconfig must be a netmask, for example something like 255.255.255.0. %s", + ifconfig_warn_how_to_silence); + } } - gc_free (&gc); + gc_free(&gc); } /* * For TAP-style devices, generate a broadcast address. */ static in_addr_t -generate_ifconfig_broadcast_addr (in_addr_t local, - in_addr_t netmask) +generate_ifconfig_broadcast_addr(in_addr_t local, + in_addr_t netmask) { - return local | ~netmask; + return local | ~netmask; } /* @@ -328,63 +356,69 @@ generate_ifconfig_broadcast_addr (in_addr_t local, * clash with ifconfig addresses or subnet. */ static void -check_addr_clash (const char *name, - int type, - in_addr_t public, - in_addr_t local, - in_addr_t remote_netmask) +check_addr_clash(const char *name, + int type, + in_addr_t public, + in_addr_t local, + in_addr_t remote_netmask) { - struct gc_arena gc = gc_new (); + struct gc_arena gc = gc_new(); #if 0 - msg (M_INFO, "CHECK_ADDR_CLASH type=%d public=%s local=%s, remote_netmask=%s", - type, - print_in_addr_t (public, 0, &gc), - print_in_addr_t (local, 0, &gc), - print_in_addr_t (remote_netmask, 0, &gc)); + msg(M_INFO, "CHECK_ADDR_CLASH type=%d public=%s local=%s, remote_netmask=%s", + type, + print_in_addr_t(public, 0, &gc), + print_in_addr_t(local, 0, &gc), + print_in_addr_t(remote_netmask, 0, &gc)); #endif - if (public) - { - if (type == DEV_TYPE_TUN) - { - const in_addr_t test_netmask = 0xFFFFFF00; - const in_addr_t public_net = public & test_netmask; - const in_addr_t local_net = local & test_netmask; - const in_addr_t remote_net = remote_netmask & test_netmask; - - if (public == local || public == remote_netmask) - msg (M_WARN, - "WARNING: --%s address [%s] conflicts with --ifconfig address pair [%s, %s]. %s", - name, - print_in_addr_t (public, 0, &gc), - print_in_addr_t (local, 0, &gc), - print_in_addr_t (remote_netmask, 0, &gc), - ifconfig_warn_how_to_silence); - - if (public_net == local_net || public_net == remote_net) - msg (M_WARN, - "WARNING: potential conflict between --%s address [%s] and --ifconfig address pair [%s, %s] -- this is a warning only that is triggered when local/remote addresses exist within the same /24 subnet as --ifconfig endpoints. %s", - name, - print_in_addr_t (public, 0, &gc), - print_in_addr_t (local, 0, &gc), - print_in_addr_t (remote_netmask, 0, &gc), - ifconfig_warn_how_to_silence); - } - else if (type == DEV_TYPE_TAP) - { - const in_addr_t public_network = public & remote_netmask; - const in_addr_t virtual_network = local & remote_netmask; - if (public_network == virtual_network) - msg (M_WARN, - "WARNING: --%s address [%s] conflicts with --ifconfig subnet [%s, %s] -- local and remote addresses cannot be inside of the --ifconfig subnet. %s", - name, - print_in_addr_t (public, 0, &gc), - print_in_addr_t (local, 0, &gc), - print_in_addr_t (remote_netmask, 0, &gc), - ifconfig_warn_how_to_silence); - } - } - gc_free (&gc); + if (public) + { + if (type == DEV_TYPE_TUN) + { + const in_addr_t test_netmask = 0xFFFFFF00; + const in_addr_t public_net = public & test_netmask; + const in_addr_t local_net = local & test_netmask; + const in_addr_t remote_net = remote_netmask & test_netmask; + + if (public == local || public == remote_netmask) + { + msg(M_WARN, + "WARNING: --%s address [%s] conflicts with --ifconfig address pair [%s, %s]. %s", + name, + print_in_addr_t(public, 0, &gc), + print_in_addr_t(local, 0, &gc), + print_in_addr_t(remote_netmask, 0, &gc), + ifconfig_warn_how_to_silence); + } + + if (public_net == local_net || public_net == remote_net) + { + msg(M_WARN, + "WARNING: potential conflict between --%s address [%s] and --ifconfig address pair [%s, %s] -- this is a warning only that is triggered when local/remote addresses exist within the same /24 subnet as --ifconfig endpoints. %s", + name, + print_in_addr_t(public, 0, &gc), + print_in_addr_t(local, 0, &gc), + print_in_addr_t(remote_netmask, 0, &gc), + ifconfig_warn_how_to_silence); + } + } + else if (type == DEV_TYPE_TAP) + { + const in_addr_t public_network = public & remote_netmask; + const in_addr_t virtual_network = local & remote_netmask; + if (public_network == virtual_network) + { + msg(M_WARN, + "WARNING: --%s address [%s] conflicts with --ifconfig subnet [%s, %s] -- local and remote addresses cannot be inside of the --ifconfig subnet. %s", + name, + print_in_addr_t(public, 0, &gc), + print_in_addr_t(local, 0, &gc), + print_in_addr_t(remote_netmask, 0, &gc), + ifconfig_warn_how_to_silence); + } + } + } + gc_free(&gc); } /* @@ -395,51 +429,53 @@ check_addr_clash (const char *name, * off of a router set to 192.168.1.x. */ void -check_subnet_conflict (const in_addr_t ip, - const in_addr_t netmask, - const char *prefix) +check_subnet_conflict(const in_addr_t ip, + const in_addr_t netmask, + const char *prefix) { #if 0 /* too many false positives */ - struct gc_arena gc = gc_new (); - in_addr_t lan_gw = 0; - in_addr_t lan_netmask = 0; - - if (get_default_gateway (&lan_gw, &lan_netmask) && lan_netmask) - { - const in_addr_t lan_network = lan_gw & lan_netmask; - const in_addr_t network = ip & netmask; - - /* do the two subnets defined by network/netmask and lan_network/lan_netmask intersect? */ - if ((network & lan_netmask) == lan_network - || (lan_network & netmask) == network) - { - msg (M_WARN, "WARNING: potential %s subnet conflict between local LAN [%s/%s] and remote VPN [%s/%s]", - prefix, - print_in_addr_t (lan_network, 0, &gc), - print_in_addr_t (lan_netmask, 0, &gc), - print_in_addr_t (network, 0, &gc), - print_in_addr_t (netmask, 0, &gc)); - } - } - gc_free (&gc); -#endif + struct gc_arena gc = gc_new(); + in_addr_t lan_gw = 0; + in_addr_t lan_netmask = 0; + + if (get_default_gateway(&lan_gw, &lan_netmask) && lan_netmask) + { + const in_addr_t lan_network = lan_gw & lan_netmask; + const in_addr_t network = ip & netmask; + + /* do the two subnets defined by network/netmask and lan_network/lan_netmask intersect? */ + if ((network & lan_netmask) == lan_network + || (lan_network & netmask) == network) + { + msg(M_WARN, "WARNING: potential %s subnet conflict between local LAN [%s/%s] and remote VPN [%s/%s]", + prefix, + print_in_addr_t(lan_network, 0, &gc), + print_in_addr_t(lan_netmask, 0, &gc), + print_in_addr_t(network, 0, &gc), + print_in_addr_t(netmask, 0, &gc)); + } + } + gc_free(&gc); +#endif /* if 0 */ } void -warn_on_use_of_common_subnets (void) +warn_on_use_of_common_subnets(void) { - struct gc_arena gc = gc_new (); - struct route_gateway_info rgi; - const int needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED); + struct gc_arena gc = gc_new(); + struct route_gateway_info rgi; + const int needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED); - get_default_gateway (&rgi); - if ((rgi.flags & needed) == needed) + get_default_gateway(&rgi); + if ((rgi.flags & needed) == needed) { - const in_addr_t lan_network = rgi.gateway.addr & rgi.gateway.netmask; - if (lan_network == 0xC0A80000 || lan_network == 0xC0A80100) - msg (M_WARN, "NOTE: your local LAN uses the extremely common subnet address 192.168.0.x or 192.168.1.x. Be aware that this might create routing conflicts if you connect to the VPN server from public locations such as internet cafes that use the same subnet."); + const in_addr_t lan_network = rgi.gateway.addr & rgi.gateway.netmask; + if (lan_network == 0xC0A80000 || lan_network == 0xC0A80100) + { + msg(M_WARN, "NOTE: your local LAN uses the extremely common subnet address 192.168.0.x or 192.168.1.x. Be aware that this might create routing conflicts if you connect to the VPN server from public locations such as internet cafes that use the same subnet."); + } } - gc_free (&gc); + gc_free(&gc); } /* @@ -447,132 +483,140 @@ warn_on_use_of_common_subnets (void) * between peers. */ const char * -ifconfig_options_string (const struct tuntap* tt, bool remote, bool disable, struct gc_arena *gc) -{ - struct buffer out = alloc_buf_gc (256, gc); - if (tt->did_ifconfig_setup && !disable) - { - if (tt->type == DEV_TYPE_TAP || (tt->type == DEV_TYPE_TUN && tt->topology == TOP_SUBNET)) - { - buf_printf (&out, "%s %s", - print_in_addr_t (tt->local & tt->remote_netmask, 0, gc), - print_in_addr_t (tt->remote_netmask, 0, gc)); - } - else if (tt->type == DEV_TYPE_TUN) - { - const char *l, *r; - if (remote) - { - r = print_in_addr_t (tt->local, 0, gc); - l = print_in_addr_t (tt->remote_netmask, 0, gc); - } - else - { - l = print_in_addr_t (tt->local, 0, gc); - r = print_in_addr_t (tt->remote_netmask, 0, gc); - } - buf_printf (&out, "%s %s", r, l); - } - else - buf_printf (&out, "[undef]"); - } - return BSTR (&out); +ifconfig_options_string(const struct tuntap *tt, bool remote, bool disable, struct gc_arena *gc) +{ + struct buffer out = alloc_buf_gc(256, gc); + if (tt->did_ifconfig_setup && !disable) + { + if (tt->type == DEV_TYPE_TAP || (tt->type == DEV_TYPE_TUN && tt->topology == TOP_SUBNET)) + { + buf_printf(&out, "%s %s", + print_in_addr_t(tt->local & tt->remote_netmask, 0, gc), + print_in_addr_t(tt->remote_netmask, 0, gc)); + } + else if (tt->type == DEV_TYPE_TUN) + { + const char *l, *r; + if (remote) + { + r = print_in_addr_t(tt->local, 0, gc); + l = print_in_addr_t(tt->remote_netmask, 0, gc); + } + else + { + l = print_in_addr_t(tt->local, 0, gc); + r = print_in_addr_t(tt->remote_netmask, 0, gc); + } + buf_printf(&out, "%s %s", r, l); + } + else + { + buf_printf(&out, "[undef]"); + } + } + return BSTR(&out); } /* * Return a status string describing wait state. */ const char * -tun_stat (const struct tuntap *tt, unsigned int rwflags, struct gc_arena *gc) +tun_stat(const struct tuntap *tt, unsigned int rwflags, struct gc_arena *gc) { - struct buffer out = alloc_buf_gc (64, gc); - if (tt) + struct buffer out = alloc_buf_gc(64, gc); + if (tt) { - if (rwflags & EVENT_READ) - { - buf_printf (&out, "T%s", - (tt->rwflags_debug & EVENT_READ) ? "R" : "r"); + if (rwflags & EVENT_READ) + { + buf_printf(&out, "T%s", + (tt->rwflags_debug & EVENT_READ) ? "R" : "r"); #ifdef _WIN32 - buf_printf (&out, "%s", - overlapped_io_state_ascii (&tt->reads)); + buf_printf(&out, "%s", + overlapped_io_state_ascii(&tt->reads)); #endif - } - if (rwflags & EVENT_WRITE) - { - buf_printf (&out, "T%s", - (tt->rwflags_debug & EVENT_WRITE) ? "W" : "w"); + } + if (rwflags & EVENT_WRITE) + { + buf_printf(&out, "T%s", + (tt->rwflags_debug & EVENT_WRITE) ? "W" : "w"); #ifdef _WIN32 - buf_printf (&out, "%s", - overlapped_io_state_ascii (&tt->writes)); + buf_printf(&out, "%s", + overlapped_io_state_ascii(&tt->writes)); #endif - } + } } - else + else { - buf_printf (&out, "T?"); + buf_printf(&out, "T?"); } - return BSTR (&out); + return BSTR(&out); } /* * Return true for point-to-point topology, false for subnet topology */ bool -is_tun_p2p (const struct tuntap *tt) +is_tun_p2p(const struct tuntap *tt) { - bool tun = false; + bool tun = false; - if (tt->type == DEV_TYPE_TAP || (tt->type == DEV_TYPE_TUN && tt->topology == TOP_SUBNET)) - tun = false; - else if (tt->type == DEV_TYPE_TUN) - tun = true; - else - msg (M_FATAL, "Error: problem with tun vs. tap setting"); /* JYFIXME -- needs to be caught earlier, in init_tun? */ + if (tt->type == DEV_TYPE_TAP || (tt->type == DEV_TYPE_TUN && tt->topology == TOP_SUBNET)) + { + tun = false; + } + else if (tt->type == DEV_TYPE_TUN) + { + tun = true; + } + else + { + msg(M_FATAL, "Error: problem with tun vs. tap setting"); /* JYFIXME -- needs to be caught earlier, in init_tun? */ - return tun; + } + return tun; } /* * Set the ifconfig_* environment variables, both for IPv4 and IPv6 */ void -do_ifconfig_setenv (const struct tuntap *tt, struct env_set *es) +do_ifconfig_setenv(const struct tuntap *tt, struct env_set *es) { - struct gc_arena gc = gc_new (); - const char *ifconfig_local = print_in_addr_t (tt->local, 0, &gc); - const char *ifconfig_remote_netmask = print_in_addr_t (tt->remote_netmask, 0, &gc); + struct gc_arena gc = gc_new(); + const char *ifconfig_local = print_in_addr_t(tt->local, 0, &gc); + const char *ifconfig_remote_netmask = print_in_addr_t(tt->remote_netmask, 0, &gc); /* * Set environmental variables with ifconfig parameters. */ if (tt->did_ifconfig_setup) { - bool tun = is_tun_p2p (tt); + bool tun = is_tun_p2p(tt); - setenv_str (es, "ifconfig_local", ifconfig_local); - if (tun) - { - setenv_str (es, "ifconfig_remote", ifconfig_remote_netmask); - } - else - { - const char *ifconfig_broadcast = print_in_addr_t (tt->broadcast, 0, &gc); - setenv_str (es, "ifconfig_netmask", ifconfig_remote_netmask); - setenv_str (es, "ifconfig_broadcast", ifconfig_broadcast); - } + setenv_str(es, "ifconfig_local", ifconfig_local); + if (tun) + { + setenv_str(es, "ifconfig_remote", ifconfig_remote_netmask); + } + else + { + const char *ifconfig_broadcast = print_in_addr_t(tt->broadcast, 0, &gc); + setenv_str(es, "ifconfig_netmask", ifconfig_remote_netmask); + setenv_str(es, "ifconfig_broadcast", ifconfig_broadcast); + } } if (tt->did_ifconfig_ipv6_setup) { - const char *ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); - const char *ifconfig_ipv6_remote = print_in6_addr (tt->remote_ipv6, 0, &gc); + const char *ifconfig_ipv6_local = print_in6_addr(tt->local_ipv6, 0, &gc); + const char *ifconfig_ipv6_remote = print_in6_addr(tt->remote_ipv6, 0, &gc); - setenv_str (es, "ifconfig_ipv6_local", ifconfig_ipv6_local); - setenv_int (es, "ifconfig_ipv6_netbits", tt->netbits_ipv6); - setenv_str (es, "ifconfig_ipv6_remote", ifconfig_ipv6_remote); + setenv_str(es, "ifconfig_ipv6_local", ifconfig_ipv6_local); + setenv_int(es, "ifconfig_ipv6_netbits", tt->netbits_ipv6); + setenv_str(es, "ifconfig_ipv6_remote", ifconfig_ipv6_remote); } - gc_free (&gc); + gc_free(&gc); } /* @@ -582,179 +626,191 @@ do_ifconfig_setenv (const struct tuntap *tt, struct env_set *es) * but don't execute yet. */ struct tuntap * -init_tun (const char *dev, /* --dev option */ - const char *dev_type, /* --dev-type option */ - int topology, /* one of the TOP_x values */ - const char *ifconfig_local_parm, /* --ifconfig parm 1 */ - const char *ifconfig_remote_netmask_parm, /* --ifconfig parm 2 */ - const char *ifconfig_ipv6_local_parm, /* --ifconfig parm 1 IPv6 */ - int ifconfig_ipv6_netbits_parm, - const char *ifconfig_ipv6_remote_parm, /* --ifconfig parm 2 IPv6 */ - struct addrinfo *local_public, - struct addrinfo *remote_public, - const bool strict_warn, - struct env_set *es) -{ - struct gc_arena gc = gc_new (); - struct tuntap *tt; - - ALLOC_OBJ (tt, struct tuntap); - clear_tuntap (tt); - - tt->type = dev_type_enum (dev, dev_type); - tt->topology = topology; - - if (ifconfig_local_parm && ifconfig_remote_netmask_parm) - { - bool tun = false; - - /* - * We only handle TUN/TAP devices here, not --dev null devices. - */ - tun = is_tun_p2p (tt); - - /* - * Convert arguments to binary IPv4 addresses. - */ - - tt->local = getaddr ( - GETADDR_RESOLVE - | GETADDR_HOST_ORDER - | GETADDR_FATAL_ON_SIGNAL - | GETADDR_FATAL, - ifconfig_local_parm, - 0, - NULL, - NULL); - - tt->remote_netmask = getaddr ( - (tun ? GETADDR_RESOLVE : 0) - | GETADDR_HOST_ORDER - | GETADDR_FATAL_ON_SIGNAL - | GETADDR_FATAL, - ifconfig_remote_netmask_parm, - 0, - NULL, - NULL); - - /* - * Look for common errors in --ifconfig parms - */ - if (strict_warn) - { - struct addrinfo *curele; - ifconfig_sanity_check (tt->type == DEV_TYPE_TUN, tt->remote_netmask, tt->topology); - - /* - * If local_public or remote_public addresses are defined, - * make sure they do not clash with our virtual subnet. - */ - - for(curele=local_public;curele;curele=curele->ai_next) { - if(curele->ai_family == AF_INET) - check_addr_clash ("local", - tt->type, - ((struct sockaddr_in*)curele->ai_addr)->sin_addr.s_addr, - tt->local, - tt->remote_netmask); - } - - for (curele=remote_public;curele;curele=curele->ai_next) { - if (curele->ai_family == AF_INET) - check_addr_clash ("remote", - tt->type, - ((struct sockaddr_in*)curele->ai_addr)->sin_addr.s_addr, - tt->local, - tt->remote_netmask); - } - - if (tt->type == DEV_TYPE_TAP || (tt->type == DEV_TYPE_TUN && tt->topology == TOP_SUBNET)) - check_subnet_conflict (tt->local, tt->remote_netmask, "TUN/TAP adapter"); - else if (tt->type == DEV_TYPE_TUN) - check_subnet_conflict (tt->local, IPV4_NETMASK_HOST, "TUN/TAP adapter"); - } - - /* - * If TAP-style interface, generate broadcast address. - */ - if (!tun) - { - tt->broadcast = generate_ifconfig_broadcast_addr (tt->local, tt->remote_netmask); - } +init_tun(const char *dev, /* --dev option */ + const char *dev_type, /* --dev-type option */ + int topology, /* one of the TOP_x values */ + const char *ifconfig_local_parm, /* --ifconfig parm 1 */ + const char *ifconfig_remote_netmask_parm, /* --ifconfig parm 2 */ + const char *ifconfig_ipv6_local_parm, /* --ifconfig parm 1 IPv6 */ + int ifconfig_ipv6_netbits_parm, + const char *ifconfig_ipv6_remote_parm, /* --ifconfig parm 2 IPv6 */ + struct addrinfo *local_public, + struct addrinfo *remote_public, + const bool strict_warn, + struct env_set *es) +{ + struct gc_arena gc = gc_new(); + struct tuntap *tt; + + ALLOC_OBJ(tt, struct tuntap); + clear_tuntap(tt); + + tt->type = dev_type_enum(dev, dev_type); + tt->topology = topology; + + if (ifconfig_local_parm && ifconfig_remote_netmask_parm) + { + bool tun = false; + + /* + * We only handle TUN/TAP devices here, not --dev null devices. + */ + tun = is_tun_p2p(tt); + + /* + * Convert arguments to binary IPv4 addresses. + */ + + tt->local = getaddr( + GETADDR_RESOLVE + | GETADDR_HOST_ORDER + | GETADDR_FATAL_ON_SIGNAL + | GETADDR_FATAL, + ifconfig_local_parm, + 0, + NULL, + NULL); + + tt->remote_netmask = getaddr( + (tun ? GETADDR_RESOLVE : 0) + | GETADDR_HOST_ORDER + | GETADDR_FATAL_ON_SIGNAL + | GETADDR_FATAL, + ifconfig_remote_netmask_parm, + 0, + NULL, + NULL); + + /* + * Look for common errors in --ifconfig parms + */ + if (strict_warn) + { + struct addrinfo *curele; + ifconfig_sanity_check(tt->type == DEV_TYPE_TUN, tt->remote_netmask, tt->topology); + + /* + * If local_public or remote_public addresses are defined, + * make sure they do not clash with our virtual subnet. + */ + + for (curele = local_public; curele; curele = curele->ai_next) { + if (curele->ai_family == AF_INET) + { + check_addr_clash("local", + tt->type, + ((struct sockaddr_in *)curele->ai_addr)->sin_addr.s_addr, + tt->local, + tt->remote_netmask); + } + } + + for (curele = remote_public; curele; curele = curele->ai_next) { + if (curele->ai_family == AF_INET) + { + check_addr_clash("remote", + tt->type, + ((struct sockaddr_in *)curele->ai_addr)->sin_addr.s_addr, + tt->local, + tt->remote_netmask); + } + } + + if (tt->type == DEV_TYPE_TAP || (tt->type == DEV_TYPE_TUN && tt->topology == TOP_SUBNET)) + { + check_subnet_conflict(tt->local, tt->remote_netmask, "TUN/TAP adapter"); + } + else if (tt->type == DEV_TYPE_TUN) + { + check_subnet_conflict(tt->local, IPV4_NETMASK_HOST, "TUN/TAP adapter"); + } + } + + /* + * If TAP-style interface, generate broadcast address. + */ + if (!tun) + { + tt->broadcast = generate_ifconfig_broadcast_addr(tt->local, tt->remote_netmask); + } #ifdef _WIN32 - /* - * Make sure that both ifconfig addresses are part of the - * same .252 subnet. - */ - if (tun) + /* + * Make sure that both ifconfig addresses are part of the + * same .252 subnet. + */ + if (tun) { - verify_255_255_255_252 (tt->local, tt->remote_netmask); - tt->adapter_netmask = ~3; + verify_255_255_255_252(tt->local, tt->remote_netmask); + tt->adapter_netmask = ~3; } - else + else { - tt->adapter_netmask = tt->remote_netmask; + tt->adapter_netmask = tt->remote_netmask; } #endif - tt->did_ifconfig_setup = true; + tt->did_ifconfig_setup = true; } - if (ifconfig_ipv6_local_parm && ifconfig_ipv6_remote_parm) + if (ifconfig_ipv6_local_parm && ifconfig_ipv6_remote_parm) { - /* - * Convert arguments to binary IPv6 addresses. - */ + /* + * Convert arguments to binary IPv6 addresses. + */ - if ( inet_pton( AF_INET6, ifconfig_ipv6_local_parm, &tt->local_ipv6 ) != 1 || - inet_pton( AF_INET6, ifconfig_ipv6_remote_parm, &tt->remote_ipv6 ) != 1 ) - { - msg( M_FATAL, "init_tun: problem converting IPv6 ifconfig addresses %s and %s to binary", ifconfig_ipv6_local_parm, ifconfig_ipv6_remote_parm ); - } - tt->netbits_ipv6 = ifconfig_ipv6_netbits_parm; + if (inet_pton( AF_INET6, ifconfig_ipv6_local_parm, &tt->local_ipv6 ) != 1 + || inet_pton( AF_INET6, ifconfig_ipv6_remote_parm, &tt->remote_ipv6 ) != 1) + { + msg( M_FATAL, "init_tun: problem converting IPv6 ifconfig addresses %s and %s to binary", ifconfig_ipv6_local_parm, ifconfig_ipv6_remote_parm ); + } + tt->netbits_ipv6 = ifconfig_ipv6_netbits_parm; - tt->did_ifconfig_ipv6_setup = true; + tt->did_ifconfig_ipv6_setup = true; } - /* - * Set environmental variables with ifconfig parameters. - */ - if (es) do_ifconfig_setenv(tt, es); + /* + * Set environmental variables with ifconfig parameters. + */ + if (es) + { + do_ifconfig_setenv(tt, es); + } - gc_free (&gc); - return tt; + gc_free(&gc); + return tt; } /* * Platform specific tun initializations */ void -init_tun_post (struct tuntap *tt, - const struct frame *frame, - const struct tuntap_options *options) +init_tun_post(struct tuntap *tt, + const struct frame *frame, + const struct tuntap_options *options) { - tt->options = *options; + tt->options = *options; #ifdef _WIN32 - overlapped_io_init (&tt->reads, frame, FALSE, true); - overlapped_io_init (&tt->writes, frame, TRUE, true); - tt->rw_handle.read = tt->reads.overlapped.hEvent; - tt->rw_handle.write = tt->writes.overlapped.hEvent; - tt->adapter_index = TUN_ADAPTER_INDEX_INVALID; + overlapped_io_init(&tt->reads, frame, FALSE, true); + overlapped_io_init(&tt->writes, frame, TRUE, true); + tt->rw_handle.read = tt->reads.overlapped.hEvent; + tt->rw_handle.write = tt->writes.overlapped.hEvent; + tt->adapter_index = TUN_ADAPTER_INDEX_INVALID; #endif } -#if defined(_WIN32) || \ - defined(TARGET_DARWIN) || defined(TARGET_NETBSD) || defined(TARGET_OPENBSD) +#if defined(_WIN32) \ + || defined(TARGET_DARWIN) || defined(TARGET_NETBSD) || defined(TARGET_OPENBSD) /* some of the platforms will auto-add a "network route" pointing * to the interface on "ifconfig tunX 2001:db8::1/64", others need * an extra call to "route add..." * -> helper function to simplify code below */ -void add_route_connected_v6_net(struct tuntap * tt, - const struct env_set *es) +void +add_route_connected_v6_net(struct tuntap *tt, + const struct env_set *es) { struct route_ipv6 r6; @@ -762,13 +818,14 @@ void add_route_connected_v6_net(struct tuntap * tt, r6.network = tt->local_ipv6; r6.netbits = tt->netbits_ipv6; r6.gateway = tt->local_ipv6; - r6.metric = 0; /* connected route */ + r6.metric = 0; /* connected route */ r6.flags = RT_DEFINED | RT_METRIC_DEFINED; - add_route_ipv6 (&r6, tt, 0, es); + add_route_ipv6(&r6, tt, 0, es); } -void delete_route_connected_v6_net(struct tuntap * tt, - const struct env_set *es) +void +delete_route_connected_v6_net(struct tuntap *tt, + const struct env_set *es) { struct route_ipv6 r6; @@ -776,14 +833,14 @@ void delete_route_connected_v6_net(struct tuntap * tt, r6.network = tt->local_ipv6; r6.netbits = tt->netbits_ipv6; r6.gateway = tt->local_ipv6; - r6.metric = 0; /* connected route */ + r6.metric = 0; /* connected route */ r6.flags = RT_DEFINED | RT_ADDED | RT_METRIC_DEFINED; - delete_route_ipv6 (&r6, tt, 0, es); + delete_route_ipv6(&r6, tt, 0, es); } -#endif +#endif /* if defined(_WIN32) || defined(TARGET_DARWIN) || defined(TARGET_NETBSD) || defined(TARGET_OPENBSD) */ -#if defined(TARGET_FREEBSD)||defined(TARGET_DRAGONFLY)||\ - defined(TARGET_OPENBSD) +#if defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) \ + || defined(TARGET_OPENBSD) /* we can't use true subnet mode on tun on all platforms, as that * conflicts with IPv6 (wants to use ND then, which we don't do), * but the OSes want "a remote address that is different from ours" @@ -796,712 +853,756 @@ void delete_route_connected_v6_net(struct tuntap * tt, in_addr_t create_arbitrary_remote( struct tuntap *tt ) { - in_addr_t remote; + in_addr_t remote; - remote = (tt->local & tt->remote_netmask) +1; + remote = (tt->local & tt->remote_netmask) +1; - if ( remote == tt->local ) remote ++; + if (remote == tt->local) + { + remote++; + } - return remote; + return remote; } #endif /* execute the ifconfig command through the shell */ void -do_ifconfig (struct tuntap *tt, - const char *actual, /* actual device name */ - int tun_mtu, - const struct env_set *es) +do_ifconfig(struct tuntap *tt, + const char *actual, /* actual device name */ + int tun_mtu, + const struct env_set *es) { - struct gc_arena gc = gc_new (); + struct gc_arena gc = gc_new(); - if (tt->did_ifconfig_setup) + if (tt->did_ifconfig_setup) { - bool tun = false; - const char *ifconfig_local = NULL; - const char *ifconfig_remote_netmask = NULL; - const char *ifconfig_broadcast = NULL; - const char *ifconfig_ipv6_local = NULL; - bool do_ipv6 = false; - struct argv argv = argv_new (); - - msg( M_DEBUG, "do_ifconfig, tt->did_ifconfig_ipv6_setup=%d", - tt->did_ifconfig_ipv6_setup ); - - /* - * We only handle TUN/TAP devices here, not --dev null devices. - */ - tun = is_tun_p2p (tt); - - /* - * Set ifconfig parameters - */ - ifconfig_local = print_in_addr_t (tt->local, 0, &gc); - ifconfig_remote_netmask = print_in_addr_t (tt->remote_netmask, 0, &gc); - - if (tt->did_ifconfig_ipv6_setup ) + bool tun = false; + const char *ifconfig_local = NULL; + const char *ifconfig_remote_netmask = NULL; + const char *ifconfig_broadcast = NULL; + const char *ifconfig_ipv6_local = NULL; + bool do_ipv6 = false; + struct argv argv = argv_new(); + + msg( M_DEBUG, "do_ifconfig, tt->did_ifconfig_ipv6_setup=%d", + tt->did_ifconfig_ipv6_setup ); + + /* + * We only handle TUN/TAP devices here, not --dev null devices. + */ + tun = is_tun_p2p(tt); + + /* + * Set ifconfig parameters + */ + ifconfig_local = print_in_addr_t(tt->local, 0, &gc); + ifconfig_remote_netmask = print_in_addr_t(tt->remote_netmask, 0, &gc); + + if (tt->did_ifconfig_ipv6_setup) { - ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); - do_ipv6 = true; - } + ifconfig_ipv6_local = print_in6_addr(tt->local_ipv6, 0, &gc); + do_ipv6 = true; + } - /* - * If TAP-style device, generate broadcast address. - */ - if (!tun) - ifconfig_broadcast = print_in_addr_t (tt->broadcast, 0, &gc); + /* + * If TAP-style device, generate broadcast address. + */ + if (!tun) + { + ifconfig_broadcast = print_in_addr_t(tt->broadcast, 0, &gc); + } #ifdef ENABLE_MANAGEMENT - if (management) - { - management_set_state (management, - OPENVPN_STATE_ASSIGN_IP, - NULL, - &tt->local, - &tt->local_ipv6, - NULL, - NULL); - } + if (management) + { + management_set_state(management, + OPENVPN_STATE_ASSIGN_IP, + NULL, + &tt->local, + &tt->local_ipv6, + NULL, + NULL); + } #endif #if defined(TARGET_LINUX) #ifdef ENABLE_IPROUTE - /* - * Set the MTU for the device - */ - argv_printf (&argv, - "%s link set dev %s up mtu %d", - iproute_path, - actual, - tun_mtu - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ip link set failed"); - - if (tun) { - - /* - * Set the address for the device - */ - argv_printf (&argv, - "%s addr add dev %s local %s peer %s", - iproute_path, - actual, - ifconfig_local, - ifconfig_remote_netmask - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ip addr add failed"); - } else { - argv_printf (&argv, - "%s addr add dev %s %s/%d broadcast %s", - iproute_path, - actual, - ifconfig_local, - netmask_to_netbits2(tt->remote_netmask), - ifconfig_broadcast - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ip addr add failed"); - } - if ( do_ipv6 ) - { - argv_printf( &argv, - "%s -6 addr add %s/%d dev %s", - iproute_path, - ifconfig_ipv6_local, - tt->netbits_ipv6, - actual - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ip -6 addr add failed"); - } - tt->did_ifconfig = true; -#else - if (tun) - argv_printf (&argv, - "%s %s %s pointopoint %s mtu %d", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - else - argv_printf (&argv, - "%s %s %s netmask %s mtu %d broadcast %s", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu, - ifconfig_broadcast - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ifconfig failed"); - if ( do_ipv6 ) - { - argv_printf (&argv, - "%s %s add %s/%d", - IFCONFIG_PATH, - actual, - ifconfig_ipv6_local, - tt->netbits_ipv6 - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ifconfig inet6 failed"); - } - tt->did_ifconfig = true; + /* + * Set the MTU for the device + */ + argv_printf(&argv, + "%s link set dev %s up mtu %d", + iproute_path, + actual, + tun_mtu + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "Linux ip link set failed"); + + if (tun) + { + + /* + * Set the address for the device + */ + argv_printf(&argv, + "%s addr add dev %s local %s peer %s", + iproute_path, + actual, + ifconfig_local, + ifconfig_remote_netmask + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "Linux ip addr add failed"); + } + else + { + argv_printf(&argv, + "%s addr add dev %s %s/%d broadcast %s", + iproute_path, + actual, + ifconfig_local, + netmask_to_netbits2(tt->remote_netmask), + ifconfig_broadcast + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "Linux ip addr add failed"); + } + if (do_ipv6) + { + argv_printf( &argv, + "%s -6 addr add %s/%d dev %s", + iproute_path, + ifconfig_ipv6_local, + tt->netbits_ipv6, + actual + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "Linux ip -6 addr add failed"); + } + tt->did_ifconfig = true; +#else /* ifdef ENABLE_IPROUTE */ + if (tun) + { + argv_printf(&argv, + "%s %s %s pointopoint %s mtu %d", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + else + { + argv_printf(&argv, + "%s %s %s netmask %s mtu %d broadcast %s", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu, + ifconfig_broadcast + ); + } + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "Linux ifconfig failed"); + if (do_ipv6) + { + argv_printf(&argv, + "%s %s add %s/%d", + IFCONFIG_PATH, + actual, + ifconfig_ipv6_local, + tt->netbits_ipv6 + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "Linux ifconfig inet6 failed"); + } + tt->did_ifconfig = true; #endif /*ENABLE_IPROUTE*/ #elif defined(TARGET_ANDROID) - if (do_ipv6) { - struct buffer out6 = alloc_buf_gc (64, &gc); - buf_printf (&out6, "%s/%d", ifconfig_ipv6_local,tt->netbits_ipv6); - management_android_control(management, "IFCONFIG6",buf_bptr(&out6)); - } - - struct buffer out = alloc_buf_gc (64, &gc); - - char* top; - switch(tt->topology) { - case TOP_NET30: - top="net30"; - break; - case TOP_P2P: - top="p2p"; - break; - case TOP_SUBNET: - top="subnet"; - break; - default: - top="undef"; - } - - buf_printf (&out, "%s %s %d %s", ifconfig_local, ifconfig_remote_netmask, tun_mtu, top); - management_android_control (management, "IFCONFIG", buf_bptr(&out)); + if (do_ipv6) + { + struct buffer out6 = alloc_buf_gc(64, &gc); + buf_printf(&out6, "%s/%d", ifconfig_ipv6_local,tt->netbits_ipv6); + management_android_control(management, "IFCONFIG6",buf_bptr(&out6)); + } + + struct buffer out = alloc_buf_gc(64, &gc); + + char *top; + switch (tt->topology) { + case TOP_NET30: + top = "net30"; + break; + + case TOP_P2P: + top = "p2p"; + break; + + case TOP_SUBNET: + top = "subnet"; + break; + + default: + top = "undef"; + } + + buf_printf(&out, "%s %s %d %s", ifconfig_local, ifconfig_remote_netmask, tun_mtu, top); + management_android_control(management, "IFCONFIG", buf_bptr(&out)); #elif defined(TARGET_SOLARIS) - /* Solaris 2.6 (and 7?) cannot set all parameters in one go... - * example: - * ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 up - * ifconfig tun2 netmask 255.255.255.255 - */ - if (tun) - { - argv_printf (&argv, - "%s %s %s %s mtu %d up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - - argv_msg (M_INFO, &argv); - if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig phase-1 failed")) - solaris_error_close (tt, es, actual, false); - - argv_printf (&argv, - "%s %s netmask 255.255.255.255", - IFCONFIG_PATH, - actual - ); - } - else - if (tt->topology == TOP_SUBNET) - { - argv_printf (&argv, - "%s %s %s %s netmask %s mtu %d up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - } + /* Solaris 2.6 (and 7?) cannot set all parameters in one go... + * example: + * ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 up + * ifconfig tun2 netmask 255.255.255.255 + */ + if (tun) + { + argv_printf(&argv, + "%s %s %s %s mtu %d up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + + argv_msg(M_INFO, &argv); + if (!openvpn_execve_check(&argv, es, 0, "Solaris ifconfig phase-1 failed")) + { + solaris_error_close(tt, es, actual, false); + } + + argv_printf(&argv, + "%s %s netmask 255.255.255.255", + IFCONFIG_PATH, + actual + ); + } + else if (tt->topology == TOP_SUBNET) + { + argv_printf(&argv, + "%s %s %s %s netmask %s mtu %d up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } else - argv_printf (&argv, - " %s %s %s netmask %s broadcast + up", + { + argv_printf(&argv, + " %s %s %s netmask %s broadcast + up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask + ); + } + + argv_msg(M_INFO, &argv); + if (!openvpn_execve_check(&argv, es, 0, "Solaris ifconfig phase-2 failed")) + { + solaris_error_close(tt, es, actual, false); + } + + if (do_ipv6) + { + argv_printf(&argv, "%s %s inet6 unplumb", + IFCONFIG_PATH, actual ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, 0, NULL); + + if (tt->type == DEV_TYPE_TUN) + { + const char *ifconfig_ipv6_remote = + print_in6_addr(tt->remote_ipv6, 0, &gc); + + argv_printf(&argv, + "%s %s inet6 plumb %s/%d %s up", IFCONFIG_PATH, actual, - ifconfig_local, - ifconfig_remote_netmask + ifconfig_ipv6_local, + tt->netbits_ipv6, + ifconfig_ipv6_remote ); + } + else /* tap mode */ + { + /* base IPv6 tap interface needs to be brought up first + */ + argv_printf(&argv, "%s %s inet6 plumb up", + IFCONFIG_PATH, actual ); + argv_msg(M_INFO, &argv); + if (!openvpn_execve_check(&argv, es, 0, "Solaris ifconfig IPv6 (prepare) failed")) + { + solaris_error_close(tt, es, actual, true); + } + + /* we might need to do "ifconfig %s inet6 auto-dhcp drop" + * after the system has noticed the interface and fired up + * the DHCPv6 client - but this takes quite a while, and the + * server will ignore the DHCPv6 packets anyway. So we don't. + */ + + /* static IPv6 addresses need to go to a subinterface (tap0:1) + */ + argv_printf(&argv, + "%s %s inet6 addif %s/%d up", + IFCONFIG_PATH, actual, + ifconfig_ipv6_local, tt->netbits_ipv6 ); + } + argv_msg(M_INFO, &argv); + if (!openvpn_execve_check(&argv, es, 0, "Solaris ifconfig IPv6 failed")) + { + solaris_error_close(tt, es, actual, true); + } + } - argv_msg (M_INFO, &argv); - if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig phase-2 failed")) - solaris_error_close (tt, es, actual, false); - - if ( do_ipv6 ) - { - argv_printf (&argv, "%s %s inet6 unplumb", - IFCONFIG_PATH, actual ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, 0, NULL); - - if ( tt->type == DEV_TYPE_TUN ) - { - const char *ifconfig_ipv6_remote = - print_in6_addr (tt->remote_ipv6, 0, &gc); - - argv_printf (&argv, - "%s %s inet6 plumb %s/%d %s up", - IFCONFIG_PATH, - actual, - ifconfig_ipv6_local, - tt->netbits_ipv6, - ifconfig_ipv6_remote - ); - } - else /* tap mode */ - { - /* base IPv6 tap interface needs to be brought up first - */ - argv_printf (&argv, "%s %s inet6 plumb up", - IFCONFIG_PATH, actual ); - argv_msg (M_INFO, &argv); - if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig IPv6 (prepare) failed")) - solaris_error_close (tt, es, actual, true); - - /* we might need to do "ifconfig %s inet6 auto-dhcp drop" - * after the system has noticed the interface and fired up - * the DHCPv6 client - but this takes quite a while, and the - * server will ignore the DHCPv6 packets anyway. So we don't. - */ - - /* static IPv6 addresses need to go to a subinterface (tap0:1) - */ - argv_printf (&argv, - "%s %s inet6 addif %s/%d up", - IFCONFIG_PATH, actual, - ifconfig_ipv6_local, tt->netbits_ipv6 ); - } - argv_msg (M_INFO, &argv); - if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig IPv6 failed")) - solaris_error_close (tt, es, actual, true); - } - - if (!tun && tt->topology == TOP_SUBNET) - { - /* Add a network route for the local tun interface */ - struct route_ipv4 r; - CLEAR (r); - r.flags = RT_DEFINED | RT_METRIC_DEFINED; - r.network = tt->local & tt->remote_netmask; - r.netmask = tt->remote_netmask; - r.gateway = tt->local; - r.metric = 0; - add_route (&r, tt, 0, NULL, es); - } - - tt->did_ifconfig = true; + if (!tun && tt->topology == TOP_SUBNET) + { + /* Add a network route for the local tun interface */ + struct route_ipv4 r; + CLEAR(r); + r.flags = RT_DEFINED | RT_METRIC_DEFINED; + r.network = tt->local & tt->remote_netmask; + r.netmask = tt->remote_netmask; + r.gateway = tt->local; + r.metric = 0; + add_route(&r, tt, 0, NULL, es); + } + + tt->did_ifconfig = true; #elif defined(TARGET_OPENBSD) - in_addr_t remote_end; /* for "virtual" subnet topology */ - - /* - * On OpenBSD, tun interfaces are persistent if created with - * "ifconfig tunX create", and auto-destroyed if created by - * opening "/dev/tunX" (so we just use the /dev/tunX) - */ - - /* example: ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 netmask 255.255.255.255 up */ - if (tun) - argv_printf (&argv, - "%s %s %s %s mtu %d netmask 255.255.255.255 up -link0", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - else - if ( tt->topology == TOP_SUBNET ) - { - remote_end = create_arbitrary_remote( tt ); - argv_printf (&argv, - "%s %s %s %s mtu %d netmask %s up -link0", - IFCONFIG_PATH, - actual, - ifconfig_local, - print_in_addr_t (remote_end, 0, &gc), - tun_mtu, - ifconfig_remote_netmask - ); - } - else - argv_printf (&argv, - "%s %s %s netmask %s mtu %d broadcast %s link0", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu, - ifconfig_broadcast - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "OpenBSD ifconfig failed"); - - /* Add a network route for the local tun interface */ - if (!tun && tt->topology == TOP_SUBNET) - { - struct route_ipv4 r; - CLEAR (r); - r.flags = RT_DEFINED; - r.network = tt->local & tt->remote_netmask; - r.netmask = tt->remote_netmask; - r.gateway = remote_end; - add_route (&r, tt, 0, NULL, es); - } - - if ( do_ipv6 ) - { - argv_printf (&argv, - "%s %s inet6 %s/%d", - IFCONFIG_PATH, - actual, - ifconfig_ipv6_local, - tt->netbits_ipv6 - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "OpenBSD ifconfig inet6 failed"); - - /* and, hooray, we explicitely need to add a route... */ - add_route_connected_v6_net(tt, es); - } - tt->did_ifconfig = true; + in_addr_t remote_end; /* for "virtual" subnet topology */ + + /* + * On OpenBSD, tun interfaces are persistent if created with + * "ifconfig tunX create", and auto-destroyed if created by + * opening "/dev/tunX" (so we just use the /dev/tunX) + */ + + /* example: ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 netmask 255.255.255.255 up */ + if (tun) + { + argv_printf(&argv, + "%s %s %s %s mtu %d netmask 255.255.255.255 up -link0", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + else if (tt->topology == TOP_SUBNET) + { + remote_end = create_arbitrary_remote( tt ); + argv_printf(&argv, + "%s %s %s %s mtu %d netmask %s up -link0", + IFCONFIG_PATH, + actual, + ifconfig_local, + print_in_addr_t(remote_end, 0, &gc), + tun_mtu, + ifconfig_remote_netmask + ); + } + else + { + argv_printf(&argv, + "%s %s %s netmask %s mtu %d broadcast %s link0", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu, + ifconfig_broadcast + ); + } + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "OpenBSD ifconfig failed"); + + /* Add a network route for the local tun interface */ + if (!tun && tt->topology == TOP_SUBNET) + { + struct route_ipv4 r; + CLEAR(r); + r.flags = RT_DEFINED; + r.network = tt->local & tt->remote_netmask; + r.netmask = tt->remote_netmask; + r.gateway = remote_end; + add_route(&r, tt, 0, NULL, es); + } + + if (do_ipv6) + { + argv_printf(&argv, + "%s %s inet6 %s/%d", + IFCONFIG_PATH, + actual, + ifconfig_ipv6_local, + tt->netbits_ipv6 + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "OpenBSD ifconfig inet6 failed"); + + /* and, hooray, we explicitely need to add a route... */ + add_route_connected_v6_net(tt, es); + } + tt->did_ifconfig = true; #elif defined(TARGET_NETBSD) - if (tun) - argv_printf (&argv, - "%s %s %s %s mtu %d netmask 255.255.255.255 up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - else - if ( tt->topology == TOP_SUBNET ) - { - argv_printf (&argv, - "%s %s %s %s mtu %d netmask %s up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_local, - tun_mtu, - ifconfig_remote_netmask - ); - } - else - /* - * NetBSD has distinct tun and tap devices - * so we don't need the "link0" extra parameter to specify we want to do - * tunneling at the ethernet level - */ - argv_printf (&argv, - "%s %s %s netmask %s mtu %d broadcast %s", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu, - ifconfig_broadcast - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "NetBSD ifconfig failed"); - - if ( do_ipv6 ) - { - argv_printf (&argv, - "%s %s inet6 %s/%d", - IFCONFIG_PATH, - actual, - ifconfig_ipv6_local, - tt->netbits_ipv6 - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "NetBSD ifconfig inet6 failed"); - - /* and, hooray, we explicitely need to add a route... */ - add_route_connected_v6_net(tt, es); - } - tt->did_ifconfig = true; + if (tun) + { + argv_printf(&argv, + "%s %s %s %s mtu %d netmask 255.255.255.255 up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + else if (tt->topology == TOP_SUBNET) + { + argv_printf(&argv, + "%s %s %s %s mtu %d netmask %s up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_local, + tun_mtu, + ifconfig_remote_netmask + ); + } + else + { + /* + * NetBSD has distinct tun and tap devices + * so we don't need the "link0" extra parameter to specify we want to do + * tunneling at the ethernet level + */ + argv_printf(&argv, + "%s %s %s netmask %s mtu %d broadcast %s", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu, + ifconfig_broadcast + ); + } + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "NetBSD ifconfig failed"); + + if (do_ipv6) + { + argv_printf(&argv, + "%s %s inet6 %s/%d", + IFCONFIG_PATH, + actual, + ifconfig_ipv6_local, + tt->netbits_ipv6 + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "NetBSD ifconfig inet6 failed"); + + /* and, hooray, we explicitely need to add a route... */ + add_route_connected_v6_net(tt, es); + } + tt->did_ifconfig = true; #elif defined(TARGET_DARWIN) - /* - * Darwin (i.e. Mac OS X) seems to exhibit similar behaviour to OpenBSD... - */ - - argv_printf (&argv, - "%s %s delete", - IFCONFIG_PATH, - actual); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, 0, NULL); - msg (M_INFO, "NOTE: Tried to delete pre-existing tun/tap instance -- No Problem if failure"); - - - /* example: ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 netmask 255.255.255.255 up */ - if (tun) - argv_printf (&argv, - "%s %s %s %s mtu %d netmask 255.255.255.255 up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - else - { - if (tt->topology == TOP_SUBNET) - argv_printf (&argv, - "%s %s %s %s netmask %s mtu %d up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - else - argv_printf (&argv, - "%s %s %s netmask %s mtu %d up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - } - - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Mac OS X ifconfig failed"); - tt->did_ifconfig = true; - - /* Add a network route for the local tun interface */ - if (!tun && tt->topology == TOP_SUBNET) - { - struct route_ipv4 r; - CLEAR (r); - r.flags = RT_DEFINED; - r.network = tt->local & tt->remote_netmask; - r.netmask = tt->remote_netmask; - r.gateway = tt->local; - add_route (&r, tt, 0, NULL, es); - } - - if ( do_ipv6 ) - { - argv_printf (&argv, - "%s %s inet6 %s/%d", - IFCONFIG_PATH, - actual, - ifconfig_ipv6_local, - tt->netbits_ipv6 - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "MacOS X ifconfig inet6 failed"); - - /* and, hooray, we explicitely need to add a route... */ - add_route_connected_v6_net(tt, es); - } - -#elif defined(TARGET_FREEBSD)||defined(TARGET_DRAGONFLY) - - in_addr_t remote_end; /* for "virtual" subnet topology */ - - /* example: ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 netmask 255.255.255.255 up */ - if (tun) - argv_printf (&argv, - "%s %s %s %s mtu %d netmask 255.255.255.255 up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - else if ( tt->topology == TOP_SUBNET ) - { - remote_end = create_arbitrary_remote( tt ); - argv_printf (&argv, - "%s %s %s %s mtu %d netmask %s up", - IFCONFIG_PATH, - actual, - ifconfig_local, - print_in_addr_t (remote_end, 0, &gc), - tun_mtu, - ifconfig_remote_netmask - ); - } - else - argv_printf (&argv, - "%s %s %s netmask %s mtu %d up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "FreeBSD ifconfig failed"); - tt->did_ifconfig = true; - - /* Add a network route for the local tun interface */ - if (!tun && tt->topology == TOP_SUBNET) - { - struct route_ipv4 r; - CLEAR (r); - r.flags = RT_DEFINED; - r.network = tt->local & tt->remote_netmask; - r.netmask = tt->remote_netmask; - r.gateway = remote_end; - add_route (&r, tt, 0, NULL, es); - } - - if ( do_ipv6 ) - { - argv_printf (&argv, - "%s %s inet6 %s/%d", - IFCONFIG_PATH, - actual, - ifconfig_ipv6_local, - tt->netbits_ipv6 - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "FreeBSD ifconfig inet6 failed"); - } + /* + * Darwin (i.e. Mac OS X) seems to exhibit similar behaviour to OpenBSD... + */ + + argv_printf(&argv, + "%s %s delete", + IFCONFIG_PATH, + actual); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, 0, NULL); + msg(M_INFO, "NOTE: Tried to delete pre-existing tun/tap instance -- No Problem if failure"); + + + /* example: ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 netmask 255.255.255.255 up */ + if (tun) + { + argv_printf(&argv, + "%s %s %s %s mtu %d netmask 255.255.255.255 up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + else + { + if (tt->topology == TOP_SUBNET) + { + argv_printf(&argv, + "%s %s %s %s netmask %s mtu %d up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + else + { + argv_printf(&argv, + "%s %s %s netmask %s mtu %d up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + } + + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "Mac OS X ifconfig failed"); + tt->did_ifconfig = true; + + /* Add a network route for the local tun interface */ + if (!tun && tt->topology == TOP_SUBNET) + { + struct route_ipv4 r; + CLEAR(r); + r.flags = RT_DEFINED; + r.network = tt->local & tt->remote_netmask; + r.netmask = tt->remote_netmask; + r.gateway = tt->local; + add_route(&r, tt, 0, NULL, es); + } + + if (do_ipv6) + { + argv_printf(&argv, + "%s %s inet6 %s/%d", + IFCONFIG_PATH, + actual, + ifconfig_ipv6_local, + tt->netbits_ipv6 + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "MacOS X ifconfig inet6 failed"); + + /* and, hooray, we explicitely need to add a route... */ + add_route_connected_v6_net(tt, es); + } + +#elif defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) + + in_addr_t remote_end; /* for "virtual" subnet topology */ + + /* example: ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 netmask 255.255.255.255 up */ + if (tun) + { + argv_printf(&argv, + "%s %s %s %s mtu %d netmask 255.255.255.255 up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + else if (tt->topology == TOP_SUBNET) + { + remote_end = create_arbitrary_remote( tt ); + argv_printf(&argv, + "%s %s %s %s mtu %d netmask %s up", + IFCONFIG_PATH, + actual, + ifconfig_local, + print_in_addr_t(remote_end, 0, &gc), + tun_mtu, + ifconfig_remote_netmask + ); + } + else + { + argv_printf(&argv, + "%s %s %s netmask %s mtu %d up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + } + + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "FreeBSD ifconfig failed"); + tt->did_ifconfig = true; + + /* Add a network route for the local tun interface */ + if (!tun && tt->topology == TOP_SUBNET) + { + struct route_ipv4 r; + CLEAR(r); + r.flags = RT_DEFINED; + r.network = tt->local & tt->remote_netmask; + r.netmask = tt->remote_netmask; + r.gateway = remote_end; + add_route(&r, tt, 0, NULL, es); + } + + if (do_ipv6) + { + argv_printf(&argv, + "%s %s inet6 %s/%d", + IFCONFIG_PATH, + actual, + ifconfig_ipv6_local, + tt->netbits_ipv6 + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, S_FATAL, "FreeBSD ifconfig inet6 failed"); + } #elif defined(TARGET_AIX) - { - /* AIX ifconfig will complain if it can't find ODM path in env */ - struct env_set *aix_es = env_set_create (NULL); - env_set_add( aix_es, "ODMDIR=/etc/objrepos" ); - - if (tun) - msg(M_FATAL, "no tun support on AIX (canthappen)"); - - /* example: ifconfig tap0 172.30.1.1 netmask 255.255.254.0 up */ - argv_printf (&argv, - "%s %s %s netmask %s mtu %d up", - IFCONFIG_PATH, - actual, - ifconfig_local, - ifconfig_remote_netmask, - tun_mtu - ); - - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, aix_es, S_FATAL, "AIX ifconfig failed"); - tt->did_ifconfig = true; - - if ( do_ipv6 ) - { - argv_printf (&argv, - "%s %s inet6 %s/%d", - IFCONFIG_PATH, - actual, - ifconfig_ipv6_local, - tt->netbits_ipv6 - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, aix_es, S_FATAL, "AIX ifconfig inet6 failed"); - } - env_set_destroy (aix_es); - } + { + /* AIX ifconfig will complain if it can't find ODM path in env */ + struct env_set *aix_es = env_set_create(NULL); + env_set_add( aix_es, "ODMDIR=/etc/objrepos" ); + + if (tun) + { + msg(M_FATAL, "no tun support on AIX (canthappen)"); + } + + /* example: ifconfig tap0 172.30.1.1 netmask 255.255.254.0 up */ + argv_printf(&argv, + "%s %s %s netmask %s mtu %d up", + IFCONFIG_PATH, + actual, + ifconfig_local, + ifconfig_remote_netmask, + tun_mtu + ); + + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, aix_es, S_FATAL, "AIX ifconfig failed"); + tt->did_ifconfig = true; + + if (do_ipv6) + { + argv_printf(&argv, + "%s %s inet6 %s/%d", + IFCONFIG_PATH, + actual, + ifconfig_ipv6_local, + tt->netbits_ipv6 + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, aix_es, S_FATAL, "AIX ifconfig inet6 failed"); + } + env_set_destroy(aix_es); + } #elif defined (_WIN32) - { - ASSERT (actual != NULL); - - switch (tt->options.ip_win32_type) - { - case IPW32_SET_MANUAL: - msg (M_INFO, "******** NOTE: Please manually set the IP/netmask of '%s' to %s/%s (if it is not already set)", - actual, - ifconfig_local, - print_in_addr_t (tt->adapter_netmask, 0, &gc)); - break; - case IPW32_SET_NETSH: - netsh_ifconfig (&tt->options, - actual, - tt->local, - tt->adapter_netmask, - NI_IP_NETMASK|NI_OPTIONS); - - break; - } - tt->did_ifconfig = true; - } - - if ( do_ipv6 ) - { - if (tt->options.ip_win32_type == IPW32_SET_MANUAL) - { - msg (M_INFO, "******** NOTE: Please manually set the v6 IP of '%s' to %s (if it is not already set)", - actual, - ifconfig_ipv6_local); - } - else if (tt->options.msg_channel) - { - do_address_service (true, AF_INET6, tt); - do_dns6_service (true, tt); - } - else - { - /* example: netsh interface ipv6 set address interface=42 2001:608:8003::d store=active */ - char iface[64]; - openvpn_snprintf(iface, sizeof(iface), "interface=%lu", tt->adapter_index ); - argv_printf (&argv, - "%s%sc interface ipv6 set address %s %s store=active", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - iface, - ifconfig_ipv6_local ); - netsh_command (&argv, 4, M_FATAL); - /* set ipv6 dns servers if any are specified */ - netsh_set_dns6_servers(tt->options.dns6, tt->options.dns6_len, actual); - } - - /* explicit route needed */ - if (tt->options.ip_win32_type != IPW32_SET_MANUAL) - { - add_route_connected_v6_net(tt, es); - } - } -#else - msg (M_FATAL, "Sorry, but I don't know how to do 'ifconfig' commands on this operating system. You should ifconfig your TUN/TAP device manually or use an --up script."); -#endif - argv_reset (&argv); + { + ASSERT(actual != NULL); + + switch (tt->options.ip_win32_type) + { + case IPW32_SET_MANUAL: + msg(M_INFO, "******** NOTE: Please manually set the IP/netmask of '%s' to %s/%s (if it is not already set)", + actual, + ifconfig_local, + print_in_addr_t(tt->adapter_netmask, 0, &gc)); + break; + + case IPW32_SET_NETSH: + netsh_ifconfig(&tt->options, + actual, + tt->local, + tt->adapter_netmask, + NI_IP_NETMASK|NI_OPTIONS); + + break; + } + tt->did_ifconfig = true; + } + + if (do_ipv6) + { + if (tt->options.ip_win32_type == IPW32_SET_MANUAL) + { + msg(M_INFO, "******** NOTE: Please manually set the v6 IP of '%s' to %s (if it is not already set)", + actual, + ifconfig_ipv6_local); + } + else if (tt->options.msg_channel) + { + do_address_service(true, AF_INET6, tt); + do_dns6_service(true, tt); + } + else + { + /* example: netsh interface ipv6 set address interface=42 2001:608:8003::d store=active */ + char iface[64]; + openvpn_snprintf(iface, sizeof(iface), "interface=%lu", tt->adapter_index ); + argv_printf(&argv, + "%s%sc interface ipv6 set address %s %s store=active", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + iface, + ifconfig_ipv6_local ); + netsh_command(&argv, 4, M_FATAL); + /* set ipv6 dns servers if any are specified */ + netsh_set_dns6_servers(tt->options.dns6, tt->options.dns6_len, actual); + } + + /* explicit route needed */ + if (tt->options.ip_win32_type != IPW32_SET_MANUAL) + { + add_route_connected_v6_net(tt, es); + } + } +#else /* if defined(TARGET_LINUX) */ + msg(M_FATAL, "Sorry, but I don't know how to do 'ifconfig' commands on this operating system. You should ifconfig your TUN/TAP device manually or use an --up script."); +#endif /* if defined(TARGET_LINUX) */ + argv_reset(&argv); } - gc_free (&gc); + gc_free(&gc); } static void -clear_tuntap (struct tuntap *tuntap) +clear_tuntap(struct tuntap *tuntap) { - CLEAR (*tuntap); + CLEAR(*tuntap); #ifdef _WIN32 - tuntap->hand = NULL; + tuntap->hand = NULL; #else - tuntap->fd = -1; + tuntap->fd = -1; #endif #ifdef TARGET_SOLARIS - tuntap->ip_fd = -1; + tuntap->ip_fd = -1; #endif } static void -open_null (struct tuntap *tt) +open_null(struct tuntap *tt) { - tt->actual_name = string_alloc ("null", NULL); + tt->actual_name = string_alloc("null", NULL); } @@ -1529,19 +1630,23 @@ open_null (struct tuntap *tt) #include <sys/uio.h> static inline int -header_modify_read_write_return (int len) +header_modify_read_write_return(int len) { if (len > 0) - return len > sizeof (u_int32_t) ? len - sizeof (u_int32_t) : 0; + { + return len > sizeof(u_int32_t) ? len - sizeof(u_int32_t) : 0; + } else + { return len; + } } int -write_tun_header (struct tuntap* tt, uint8_t *buf, int len) +write_tun_header(struct tuntap *tt, uint8_t *buf, int len) { if (tt->type == DEV_TYPE_TUN) - { + { u_int32_t type; struct iovec iv[2]; struct ip *iph; @@ -1549,236 +1654,261 @@ write_tun_header (struct tuntap* tt, uint8_t *buf, int len) iph = (struct ip *) buf; if (iph->ip_v == 6) - type = htonl (AF_INET6); + { + type = htonl(AF_INET6); + } else - type = htonl (AF_INET); + { + type = htonl(AF_INET); + } iv[0].iov_base = &type; - iv[0].iov_len = sizeof (type); + iv[0].iov_len = sizeof(type); iv[1].iov_base = buf; iv[1].iov_len = len; - return header_modify_read_write_return (writev (tt->fd, iv, 2)); - } + return header_modify_read_write_return(writev(tt->fd, iv, 2)); + } else - return write (tt->fd, buf, len); + { + return write(tt->fd, buf, len); + } } int -read_tun_header (struct tuntap* tt, uint8_t *buf, int len) +read_tun_header(struct tuntap *tt, uint8_t *buf, int len) { if (tt->type == DEV_TYPE_TUN) - { + { u_int32_t type; struct iovec iv[2]; iv[0].iov_base = &type; - iv[0].iov_len = sizeof (type); + iv[0].iov_len = sizeof(type); iv[1].iov_base = buf; iv[1].iov_len = len; - return header_modify_read_write_return (readv (tt->fd, iv, 2)); - } + return header_modify_read_write_return(readv(tt->fd, iv, 2)); + } else - return read (tt->fd, buf, len); + { + return read(tt->fd, buf, len); + } } -#endif +#endif /* if defined (TARGET_OPENBSD) || (defined(TARGET_DARWIN) && HAVE_NET_IF_UTUN_H) */ #if !(defined(_WIN32) || defined(TARGET_LINUX)) static void -open_tun_generic (const char *dev, const char *dev_type, const char *dev_node, - bool dynamic, struct tuntap *tt) -{ - char tunname[256]; - char dynamic_name[256]; - bool dynamic_opened = false; - - if (tt->type == DEV_TYPE_NULL) - { - open_null (tt); - } - else - { - /* - * --dev-node specified, so open an explicit device node - */ - if (dev_node) - { - openvpn_snprintf (tunname, sizeof (tunname), "%s", dev_node); - } - else - { - /* - * dynamic open is indicated by --dev specified without - * explicit unit number. Try opening /dev/[dev]n - * where n = [0, 255]. - */ +open_tun_generic(const char *dev, const char *dev_type, const char *dev_node, + bool dynamic, struct tuntap *tt) +{ + char tunname[256]; + char dynamic_name[256]; + bool dynamic_opened = false; + + if (tt->type == DEV_TYPE_NULL) + { + open_null(tt); + } + else + { + /* + * --dev-node specified, so open an explicit device node + */ + if (dev_node) + { + openvpn_snprintf(tunname, sizeof(tunname), "%s", dev_node); + } + else + { + /* + * dynamic open is indicated by --dev specified without + * explicit unit number. Try opening /dev/[dev]n + * where n = [0, 255]. + */ #ifdef TARGET_NETBSD - /* on NetBSD, tap (but not tun) devices are opened by - * opening /dev/tap and then querying the system about the - * actual device name (tap0, tap1, ...) assigned - */ - if ( dynamic && strcmp( dev, "tap" ) == 0 ) - { - struct ifreq ifr; - if ((tt->fd = open ( "/dev/tap", O_RDWR)) < 0) - { - msg (M_FATAL, "Cannot allocate NetBSD TAP dev dynamically"); - } - if ( ioctl( tt->fd, TAPGIFNAME, (void*)&ifr ) < 0 ) - { - msg (M_FATAL, "Cannot query NetBSD TAP device name"); - } - CLEAR(dynamic_name); - strncpy( dynamic_name, ifr.ifr_name, sizeof(dynamic_name)-1 ); - dynamic_opened = true; - openvpn_snprintf (tunname, sizeof (tunname), "/dev/%s", dynamic_name ); - } - else + /* on NetBSD, tap (but not tun) devices are opened by + * opening /dev/tap and then querying the system about the + * actual device name (tap0, tap1, ...) assigned + */ + if (dynamic && strcmp( dev, "tap" ) == 0) + { + struct ifreq ifr; + if ((tt->fd = open( "/dev/tap", O_RDWR)) < 0) + { + msg(M_FATAL, "Cannot allocate NetBSD TAP dev dynamically"); + } + if (ioctl( tt->fd, TAPGIFNAME, (void *)&ifr ) < 0) + { + msg(M_FATAL, "Cannot query NetBSD TAP device name"); + } + CLEAR(dynamic_name); + strncpy( dynamic_name, ifr.ifr_name, sizeof(dynamic_name)-1 ); + dynamic_opened = true; + openvpn_snprintf(tunname, sizeof(tunname), "/dev/%s", dynamic_name ); + } + else #endif - if (dynamic && !has_digit((unsigned char *)dev)) - { - int i; - for (i = 0; i < 256; ++i) - { - openvpn_snprintf (tunname, sizeof (tunname), - "/dev/%s%d", dev, i); - openvpn_snprintf (dynamic_name, sizeof (dynamic_name), - "%s%d", dev, i); - if ((tt->fd = open (tunname, O_RDWR)) > 0) - { - dynamic_opened = true; - break; - } - msg (D_READ_WRITE | M_ERRNO, "Tried opening %s (failed)", tunname); - } - if (!dynamic_opened) - msg (M_FATAL, "Cannot allocate TUN/TAP dev dynamically"); - } - /* - * explicit unit number specified - */ - else - { - openvpn_snprintf (tunname, sizeof (tunname), "/dev/%s", dev); - } - } - - if (!dynamic_opened) - { - /* has named device existed before? if so, don't destroy at end */ - if ( if_nametoindex( dev ) > 0 ) - { - msg (M_INFO, "TUN/TAP device %s exists previously, keep at program end", dev ); - tt->persistent_if = true; - } - - if ((tt->fd = open (tunname, O_RDWR)) < 0) - msg (M_ERR, "Cannot open TUN/TAP dev %s", tunname); - } - - set_nonblock (tt->fd); - set_cloexec (tt->fd); /* don't pass fd to scripts */ - msg (M_INFO, "TUN/TAP device %s opened", tunname); - - /* tt->actual_name is passed to up and down scripts and used as the ifconfig dev name */ - tt->actual_name = string_alloc (dynamic_opened ? dynamic_name : dev, NULL); + if (dynamic && !has_digit((unsigned char *)dev)) + { + int i; + for (i = 0; i < 256; ++i) + { + openvpn_snprintf(tunname, sizeof(tunname), + "/dev/%s%d", dev, i); + openvpn_snprintf(dynamic_name, sizeof(dynamic_name), + "%s%d", dev, i); + if ((tt->fd = open(tunname, O_RDWR)) > 0) + { + dynamic_opened = true; + break; + } + msg(D_READ_WRITE | M_ERRNO, "Tried opening %s (failed)", tunname); + } + if (!dynamic_opened) + { + msg(M_FATAL, "Cannot allocate TUN/TAP dev dynamically"); + } + } + /* + * explicit unit number specified + */ + else + { + openvpn_snprintf(tunname, sizeof(tunname), "/dev/%s", dev); + } + } + + if (!dynamic_opened) + { + /* has named device existed before? if so, don't destroy at end */ + if (if_nametoindex( dev ) > 0) + { + msg(M_INFO, "TUN/TAP device %s exists previously, keep at program end", dev ); + tt->persistent_if = true; + } + + if ((tt->fd = open(tunname, O_RDWR)) < 0) + { + msg(M_ERR, "Cannot open TUN/TAP dev %s", tunname); + } + } + + set_nonblock(tt->fd); + set_cloexec(tt->fd); /* don't pass fd to scripts */ + msg(M_INFO, "TUN/TAP device %s opened", tunname); + + /* tt->actual_name is passed to up and down scripts and used as the ifconfig dev name */ + tt->actual_name = string_alloc(dynamic_opened ? dynamic_name : dev, NULL); } } #endif /* !_WIN32 && !TARGET_LINUX */ #if !defined(_WIN32) static void -close_tun_generic (struct tuntap *tt) +close_tun_generic(struct tuntap *tt) { - if (tt->fd >= 0) - close (tt->fd); - if (tt->actual_name) - free (tt->actual_name); - clear_tuntap (tt); + if (tt->fd >= 0) + { + close(tt->fd); + } + if (tt->actual_name) + { + free(tt->actual_name); + } + clear_tuntap(tt); } #endif /* !_WIN32 */ #if defined (TARGET_ANDROID) void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { #define ANDROID_TUNNAME "vpnservice-tun" - struct user_pass up; - struct gc_arena gc = gc_new (); - bool opentun; + struct user_pass up; + struct gc_arena gc = gc_new(); + bool opentun; - int oldtunfd = tt->fd; + int oldtunfd = tt->fd; - /* Prefer IPv6 DNS servers, - * Android will use the DNS server in the order we specify*/ - for (int i = 0; i < tt->options.dns6_len; i++) { - management_android_control (management, "DNS6SERVER", - print_in6_addr (tt->options.dns6[i], 0, &gc)); - } + /* Prefer IPv6 DNS servers, + * Android will use the DNS server in the order we specify*/ + for (int i = 0; i < tt->options.dns6_len; i++) { + management_android_control(management, "DNS6SERVER", + print_in6_addr(tt->options.dns6[i], 0, &gc)); + } - for (int i = 0; i < tt->options.dns_len; i++) { - management_android_control (management, "DNSSERVER", - print_in_addr_t(tt->options.dns[i], 0, &gc)); - } + for (int i = 0; i < tt->options.dns_len; i++) { + management_android_control(management, "DNSSERVER", + print_in_addr_t(tt->options.dns[i], 0, &gc)); + } - if(tt->options.domain) - management_android_control (management, "DNSDOMAIN", tt->options.domain); + if (tt->options.domain) + { + management_android_control(management, "DNSDOMAIN", tt->options.domain); + } - int android_method = managment_android_persisttun_action (management); + int android_method = managment_android_persisttun_action(management); - /* Android 4.4 workaround */ - if (oldtunfd >=0 && android_method == ANDROID_OPEN_AFTER_CLOSE) + /* Android 4.4 workaround */ + if (oldtunfd >=0 && android_method == ANDROID_OPEN_AFTER_CLOSE) { - close(oldtunfd); - openvpn_sleep(2); + close(oldtunfd); + openvpn_sleep(2); } - if (oldtunfd >=0 && android_method == ANDROID_KEEP_OLD_TUN) { - /* keep the old fd */ - opentun = true; - } else { - opentun = management_android_control (management, "OPENTUN", dev); - /* Pick up the fd from management interface after calling the - * OPENTUN command */ - tt->fd = management->connection.lastfdreceived; - management->connection.lastfdreceived=-1; - } + if (oldtunfd >=0 && android_method == ANDROID_KEEP_OLD_TUN) + { + /* keep the old fd */ + opentun = true; + } + else + { + opentun = management_android_control(management, "OPENTUN", dev); + /* Pick up the fd from management interface after calling the + * OPENTUN command */ + tt->fd = management->connection.lastfdreceived; + management->connection.lastfdreceived = -1; + } - if (oldtunfd>=0 && android_method == ANDROID_OPEN_BEFORE_CLOSE) - close(oldtunfd); + if (oldtunfd>=0 && android_method == ANDROID_OPEN_BEFORE_CLOSE) + { + close(oldtunfd); + } - /* Set the actual name to a dummy name */ - tt->actual_name = string_alloc (ANDROID_TUNNAME, NULL); + /* Set the actual name to a dummy name */ + tt->actual_name = string_alloc(ANDROID_TUNNAME, NULL); - if ((tt->fd < 0) || !opentun) - msg (M_ERR, "ERROR: Cannot open TUN"); + if ((tt->fd < 0) || !opentun) + { + msg(M_ERR, "ERROR: Cannot open TUN"); + } - gc_free (&gc); + gc_free(&gc); } void -close_tun (struct tuntap *tt) +close_tun(struct tuntap *tt) { if (tt) { - close_tun_generic (tt); - free (tt); + close_tun_generic(tt); + free(tt); } } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - return write (tt->fd, buf, len); + return write(tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - return read (tt->fd, buf, len); + return read(tt->fd, buf, len); } #elif defined(TARGET_LINUX) @@ -1790,117 +1920,126 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) #if !PEDANTIC void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - struct ifreq ifr; + struct ifreq ifr; - /* - * We handle --dev null specially, we do not open /dev/null for this. - */ - if (tt->type == DEV_TYPE_NULL) + /* + * We handle --dev null specially, we do not open /dev/null for this. + */ + if (tt->type == DEV_TYPE_NULL) { - open_null (tt); + open_null(tt); } - else + else { - /* - * Process --dev-node - */ - const char *node = dev_node; - if (!node) - node = "/dev/net/tun"; + /* + * Process --dev-node + */ + const char *node = dev_node; + if (!node) + { + node = "/dev/net/tun"; + } - /* - * Open the interface - */ - if ((tt->fd = open (node, O_RDWR)) < 0) - { - msg (M_ERR, "ERROR: Cannot open TUN/TAP dev %s", node); - } + /* + * Open the interface + */ + if ((tt->fd = open(node, O_RDWR)) < 0) + { + msg(M_ERR, "ERROR: Cannot open TUN/TAP dev %s", node); + } - /* - * Process --tun-ipv6 - */ - CLEAR (ifr); - ifr.ifr_flags = IFF_NO_PI; + /* + * Process --tun-ipv6 + */ + CLEAR(ifr); + ifr.ifr_flags = IFF_NO_PI; #if defined(IFF_ONE_QUEUE) && defined(SIOCSIFTXQLEN) - ifr.ifr_flags |= IFF_ONE_QUEUE; + ifr.ifr_flags |= IFF_ONE_QUEUE; #endif - /* - * Figure out if tun or tap device - */ - if (tt->type == DEV_TYPE_TUN) - { - ifr.ifr_flags |= IFF_TUN; - } - else if (tt->type == DEV_TYPE_TAP) - { - ifr.ifr_flags |= IFF_TAP; - } - else - { - msg (M_FATAL, "I don't recognize device %s as a tun or tap device", - dev); - } - - /* - * Set an explicit name, if --dev is not tun or tap - */ - if (strcmp(dev, "tun") && strcmp(dev, "tap")) - strncpynt (ifr.ifr_name, dev, IFNAMSIZ); - - /* - * Use special ioctl that configures tun/tap device with the parms - * we set in ifr - */ - if (ioctl (tt->fd, TUNSETIFF, (void *) &ifr) < 0) - { - msg (M_ERR, "ERROR: Cannot ioctl TUNSETIFF %s", dev); - } - - msg (M_INFO, "TUN/TAP device %s opened", ifr.ifr_name); - - /* - * Try making the TX send queue bigger - */ + /* + * Figure out if tun or tap device + */ + if (tt->type == DEV_TYPE_TUN) + { + ifr.ifr_flags |= IFF_TUN; + } + else if (tt->type == DEV_TYPE_TAP) + { + ifr.ifr_flags |= IFF_TAP; + } + else + { + msg(M_FATAL, "I don't recognize device %s as a tun or tap device", + dev); + } + + /* + * Set an explicit name, if --dev is not tun or tap + */ + if (strcmp(dev, "tun") && strcmp(dev, "tap")) + { + strncpynt(ifr.ifr_name, dev, IFNAMSIZ); + } + + /* + * Use special ioctl that configures tun/tap device with the parms + * we set in ifr + */ + if (ioctl(tt->fd, TUNSETIFF, (void *) &ifr) < 0) + { + msg(M_ERR, "ERROR: Cannot ioctl TUNSETIFF %s", dev); + } + + msg(M_INFO, "TUN/TAP device %s opened", ifr.ifr_name); + + /* + * Try making the TX send queue bigger + */ #if defined(IFF_ONE_QUEUE) && defined(SIOCSIFTXQLEN) - if (tt->options.txqueuelen) { - struct ifreq netifr; - int ctl_fd; - - if ((ctl_fd = socket (AF_INET, SOCK_DGRAM, 0)) >= 0) - { - CLEAR (netifr); - strncpynt (netifr.ifr_name, ifr.ifr_name, IFNAMSIZ); - netifr.ifr_qlen = tt->options.txqueuelen; - if (ioctl (ctl_fd, SIOCSIFTXQLEN, (void *) &netifr) >= 0) - msg (D_OSBUF, "TUN/TAP TX queue length set to %d", tt->options.txqueuelen); - else - msg (M_WARN | M_ERRNO, "Note: Cannot set tx queue length on %s", ifr.ifr_name); - close (ctl_fd); - } - else - { - msg (M_WARN | M_ERRNO, "Note: Cannot open control socket on %s", ifr.ifr_name); - } - } -#endif + if (tt->options.txqueuelen) + { + struct ifreq netifr; + int ctl_fd; + + if ((ctl_fd = socket(AF_INET, SOCK_DGRAM, 0)) >= 0) + { + CLEAR(netifr); + strncpynt(netifr.ifr_name, ifr.ifr_name, IFNAMSIZ); + netifr.ifr_qlen = tt->options.txqueuelen; + if (ioctl(ctl_fd, SIOCSIFTXQLEN, (void *) &netifr) >= 0) + { + msg(D_OSBUF, "TUN/TAP TX queue length set to %d", tt->options.txqueuelen); + } + else + { + msg(M_WARN | M_ERRNO, "Note: Cannot set tx queue length on %s", ifr.ifr_name); + } + close(ctl_fd); + } + else + { + msg(M_WARN | M_ERRNO, "Note: Cannot open control socket on %s", ifr.ifr_name); + } + } +#endif /* if defined(IFF_ONE_QUEUE) && defined(SIOCSIFTXQLEN) */ - set_nonblock (tt->fd); - set_cloexec (tt->fd); - tt->actual_name = string_alloc (ifr.ifr_name, NULL); + set_nonblock(tt->fd); + set_cloexec(tt->fd); + tt->actual_name = string_alloc(ifr.ifr_name, NULL); } - return; + return; } -#else +#else /* if !PEDANTIC */ void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - ASSERT (0); + ASSERT(0); } #endif /* !PENDANTIC */ @@ -1908,129 +2047,137 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tu #ifdef ENABLE_FEATURE_TUN_PERSIST void -tuncfg (const char *dev, const char *dev_type, const char *dev_node, int persist_mode, const char *username, const char *groupname, const struct tuntap_options *options) +tuncfg(const char *dev, const char *dev_type, const char *dev_node, int persist_mode, const char *username, const char *groupname, const struct tuntap_options *options) { - struct tuntap *tt; + struct tuntap *tt; - ALLOC_OBJ (tt, struct tuntap); - clear_tuntap (tt); - tt->type = dev_type_enum (dev, dev_type); - tt->options = *options; - open_tun (dev, dev_type, dev_node, tt); - if (ioctl (tt->fd, TUNSETPERSIST, persist_mode) < 0) - msg (M_ERR, "Cannot ioctl TUNSETPERSIST(%d) %s", persist_mode, dev); - if (username != NULL) + ALLOC_OBJ(tt, struct tuntap); + clear_tuntap(tt); + tt->type = dev_type_enum(dev, dev_type); + tt->options = *options; + open_tun(dev, dev_type, dev_node, tt); + if (ioctl(tt->fd, TUNSETPERSIST, persist_mode) < 0) { - struct platform_state_user platform_state_user; + msg(M_ERR, "Cannot ioctl TUNSETPERSIST(%d) %s", persist_mode, dev); + } + if (username != NULL) + { + struct platform_state_user platform_state_user; - if (!platform_user_get (username, &platform_state_user)) - msg (M_ERR, "Cannot get user entry for %s", username); - else - if (ioctl (tt->fd, TUNSETOWNER, platform_state_user.pw->pw_uid) < 0) - msg (M_ERR, "Cannot ioctl TUNSETOWNER(%s) %s", username, dev); + if (!platform_user_get(username, &platform_state_user)) + { + msg(M_ERR, "Cannot get user entry for %s", username); + } + else if (ioctl(tt->fd, TUNSETOWNER, platform_state_user.pw->pw_uid) < 0) + { + msg(M_ERR, "Cannot ioctl TUNSETOWNER(%s) %s", username, dev); + } } - if (groupname != NULL) + if (groupname != NULL) { - struct platform_state_group platform_state_group; + struct platform_state_group platform_state_group; - if (!platform_group_get (groupname, &platform_state_group)) - msg (M_ERR, "Cannot get group entry for %s", groupname); - else - if (ioctl (tt->fd, TUNSETGROUP, platform_state_group.gr->gr_gid) < 0) - msg (M_ERR, "Cannot ioctl TUNSETOWNER(%s) %s", groupname, dev); + if (!platform_group_get(groupname, &platform_state_group)) + { + msg(M_ERR, "Cannot get group entry for %s", groupname); + } + else if (ioctl(tt->fd, TUNSETGROUP, platform_state_group.gr->gr_gid) < 0) + { + msg(M_ERR, "Cannot ioctl TUNSETOWNER(%s) %s", groupname, dev); + } } - close_tun (tt); - msg (M_INFO, "Persist state set to: %s", (persist_mode ? "ON" : "OFF")); + close_tun(tt); + msg(M_INFO, "Persist state set to: %s", (persist_mode ? "ON" : "OFF")); } #endif /* ENABLE_FEATURE_TUN_PERSIST */ void -close_tun (struct tuntap *tt) +close_tun(struct tuntap *tt) { - if (tt) + if (tt) { - if (tt->type != DEV_TYPE_NULL && tt->did_ifconfig) - { - struct argv argv = argv_new (); - struct gc_arena gc = gc_new (); + if (tt->type != DEV_TYPE_NULL && tt->did_ifconfig) + { + struct argv argv = argv_new(); + struct gc_arena gc = gc_new(); #ifdef ENABLE_IPROUTE - if (is_tun_p2p (tt)) - { - argv_printf (&argv, - "%s addr del dev %s local %s peer %s", - iproute_path, - tt->actual_name, - print_in_addr_t (tt->local, 0, &gc), - print_in_addr_t (tt->remote_netmask, 0, &gc) - ); - } - else - { - argv_printf (&argv, - "%s addr del dev %s %s/%d", - iproute_path, - tt->actual_name, - print_in_addr_t (tt->local, 0, &gc), - netmask_to_netbits2(tt->remote_netmask) - ); - } -#else - argv_printf (&argv, - "%s %s 0.0.0.0", - IFCONFIG_PATH, - tt->actual_name - ); -#endif + if (is_tun_p2p(tt)) + { + argv_printf(&argv, + "%s addr del dev %s local %s peer %s", + iproute_path, + tt->actual_name, + print_in_addr_t(tt->local, 0, &gc), + print_in_addr_t(tt->remote_netmask, 0, &gc) + ); + } + else + { + argv_printf(&argv, + "%s addr del dev %s %s/%d", + iproute_path, + tt->actual_name, + print_in_addr_t(tt->local, 0, &gc), + netmask_to_netbits2(tt->remote_netmask) + ); + } +#else /* ifdef ENABLE_IPROUTE */ + argv_printf(&argv, + "%s %s 0.0.0.0", + IFCONFIG_PATH, + tt->actual_name + ); +#endif /* ifdef ENABLE_IPROUTE */ - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "Linux ip addr del failed"); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "Linux ip addr del failed"); if (tt->did_ifconfig_ipv6_setup) - { - const char * ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); + { + const char *ifconfig_ipv6_local = print_in6_addr(tt->local_ipv6, 0, &gc); #ifdef ENABLE_IPROUTE - argv_printf (&argv, "%s -6 addr del %s/%d dev %s", - iproute_path, - ifconfig_ipv6_local, - tt->netbits_ipv6, - tt->actual_name - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "Linux ip -6 addr del failed"); -#else - argv_printf (&argv, + argv_printf(&argv, "%s -6 addr del %s/%d dev %s", + iproute_path, + ifconfig_ipv6_local, + tt->netbits_ipv6, + tt->actual_name + ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "Linux ip -6 addr del failed"); +#else /* ifdef ENABLE_IPROUTE */ + argv_printf(&argv, "%s %s del %s/%d", IFCONFIG_PATH, tt->actual_name, ifconfig_ipv6_local, tt->netbits_ipv6 ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "Linux ifconfig inet6 del failed"); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "Linux ifconfig inet6 del failed"); #endif - } + } - argv_reset (&argv); - gc_free (&gc); - } - close_tun_generic (tt); - free (tt); + argv_reset(&argv); + gc_free(&gc); + } + close_tun_generic(tt); + free(tt); } } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - return write (tt->fd, buf, len); + return write(tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - return read (tt->fd, buf, len); + return read(tt->fd, buf, len); } #elif defined(TARGET_SOLARIS) @@ -2040,332 +2187,387 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) #endif void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) -{ - int if_fd, ip_muxid, arp_muxid, arp_fd, ppa = -1; - struct lifreq ifr; - const char *ptr; - const char *ip_node, *arp_node; - const char *dev_tuntap_type; - int link_type; - bool is_tun; - struct strioctl strioc_if, strioc_ppa; - - /* improved generic TUN/TAP driver from - * http://www.whiteboard.ne.jp/~admin2/tuntap/ - * has IPv6 support - */ - CLEAR(ifr); +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +{ + int if_fd, ip_muxid, arp_muxid, arp_fd, ppa = -1; + struct lifreq ifr; + const char *ptr; + const char *ip_node, *arp_node; + const char *dev_tuntap_type; + int link_type; + bool is_tun; + struct strioctl strioc_if, strioc_ppa; + + /* improved generic TUN/TAP driver from + * http://www.whiteboard.ne.jp/~admin2/tuntap/ + * has IPv6 support + */ + CLEAR(ifr); - if (tt->type == DEV_TYPE_NULL) + if (tt->type == DEV_TYPE_NULL) { - open_null (tt); - return; + open_null(tt); + return; } - if (tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) + { + ip_node = "/dev/udp"; + if (!dev_node) + { + dev_node = "/dev/tun"; + } + dev_tuntap_type = "tun"; + link_type = I_PLINK; + is_tun = true; + } + else if (tt->type == DEV_TYPE_TAP) { - ip_node = "/dev/udp"; - if (!dev_node) - dev_node = "/dev/tun"; - dev_tuntap_type = "tun"; - link_type = I_PLINK; - is_tun = true; + ip_node = "/dev/udp"; + if (!dev_node) + { + dev_node = "/dev/tap"; + } + arp_node = dev_node; + dev_tuntap_type = "tap"; + link_type = I_PLINK; /* was: I_LINK */ + is_tun = false; } - else if (tt->type == DEV_TYPE_TAP) + else { - ip_node = "/dev/udp"; - if (!dev_node) - dev_node = "/dev/tap"; - arp_node = dev_node; - dev_tuntap_type = "tap"; - link_type = I_PLINK; /* was: I_LINK */ - is_tun = false; + msg(M_FATAL, "I don't recognize device %s as a tun or tap device", + dev); } - else + + if ((tt->ip_fd = open(ip_node, O_RDWR, 0)) < 0) { - msg (M_FATAL, "I don't recognize device %s as a tun or tap device", - dev); + msg(M_ERR, "Can't open %s", ip_node); } - if ((tt->ip_fd = open (ip_node, O_RDWR, 0)) < 0) - msg (M_ERR, "Can't open %s", ip_node); + if ((tt->fd = open(dev_node, O_RDWR, 0)) < 0) + { + msg(M_ERR, "Can't open %s", dev_node); + } - if ((tt->fd = open (dev_node, O_RDWR, 0)) < 0) - msg (M_ERR, "Can't open %s", dev_node); - - /* get unit number */ - if (*dev) + /* get unit number */ + if (*dev) { - ptr = dev; - while (*ptr && !isdigit ((int) *ptr)) - ptr++; - ppa = atoi (ptr); + ptr = dev; + while (*ptr && !isdigit((int) *ptr)) + ptr++; + ppa = atoi(ptr); } - /* Assign a new PPA and get its unit number. */ - strioc_ppa.ic_cmd = TUNNEWPPA; - strioc_ppa.ic_timout = 0; - strioc_ppa.ic_len = sizeof(ppa); - strioc_ppa.ic_dp = (char *)&ppa; + /* Assign a new PPA and get its unit number. */ + strioc_ppa.ic_cmd = TUNNEWPPA; + strioc_ppa.ic_timout = 0; + strioc_ppa.ic_len = sizeof(ppa); + strioc_ppa.ic_dp = (char *)&ppa; - if ( *ptr == '\0' ) /* no number given, try dynamic */ + if (*ptr == '\0') /* no number given, try dynamic */ { - bool found_one = false; - while( ! found_one && ppa < 64 ) - { - int new_ppa = ioctl (tt->fd, I_STR, &strioc_ppa); - if ( new_ppa >= 0 ) - { - msg( M_INFO, "open_tun: got dynamic interface '%s%d'", dev_tuntap_type, new_ppa ); - ppa = new_ppa; - found_one = true; - break; - } - if ( errno != EEXIST ) - msg (M_ERR, "open_tun: unexpected error trying to find free %s interface", dev_tuntap_type ); - ppa++; - } - if ( !found_one ) - msg (M_ERR, "open_tun: could not find free %s interface, give up.", dev_tuntap_type ); + bool found_one = false; + while (!found_one && ppa < 64) + { + int new_ppa = ioctl(tt->fd, I_STR, &strioc_ppa); + if (new_ppa >= 0) + { + msg( M_INFO, "open_tun: got dynamic interface '%s%d'", dev_tuntap_type, new_ppa ); + ppa = new_ppa; + found_one = true; + break; + } + if (errno != EEXIST) + { + msg(M_ERR, "open_tun: unexpected error trying to find free %s interface", dev_tuntap_type ); + } + ppa++; + } + if (!found_one) + { + msg(M_ERR, "open_tun: could not find free %s interface, give up.", dev_tuntap_type ); + } } - else /* try this particular one */ + else /* try this particular one */ { - if ((ppa = ioctl (tt->fd, I_STR, &strioc_ppa)) < 0) - msg (M_ERR, "Can't assign PPA for new interface (%s%d)", dev_tuntap_type, ppa ); + if ((ppa = ioctl(tt->fd, I_STR, &strioc_ppa)) < 0) + { + msg(M_ERR, "Can't assign PPA for new interface (%s%d)", dev_tuntap_type, ppa ); + } } - if ((if_fd = open (dev_node, O_RDWR, 0)) < 0) - msg (M_ERR, "Can't open %s (2)", dev_node); + if ((if_fd = open(dev_node, O_RDWR, 0)) < 0) + { + msg(M_ERR, "Can't open %s (2)", dev_node); + } - if (ioctl (if_fd, I_PUSH, "ip") < 0) - msg (M_ERR, "Can't push IP module"); + if (ioctl(if_fd, I_PUSH, "ip") < 0) + { + msg(M_ERR, "Can't push IP module"); + } - if (tt->type == DEV_TYPE_TUN) - { - /* Assign ppa according to the unit number returned by tun device */ - if (ioctl (if_fd, IF_UNITSEL, (char *) &ppa) < 0) - msg (M_ERR, "Can't set PPA %d", ppa); + if (tt->type == DEV_TYPE_TUN) + { + /* Assign ppa according to the unit number returned by tun device */ + if (ioctl(if_fd, IF_UNITSEL, (char *) &ppa) < 0) + { + msg(M_ERR, "Can't set PPA %d", ppa); + } } - tt->actual_name = (char *) malloc (32); - check_malloc_return (tt->actual_name); + tt->actual_name = (char *) malloc(32); + check_malloc_return(tt->actual_name); - openvpn_snprintf (tt->actual_name, 32, "%s%d", dev_tuntap_type, ppa); + openvpn_snprintf(tt->actual_name, 32, "%s%d", dev_tuntap_type, ppa); - if (tt->type == DEV_TYPE_TAP) + if (tt->type == DEV_TYPE_TAP) { - if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) - msg (M_ERR, "Can't get flags\n"); - strncpynt (ifr.lifr_name, tt->actual_name, sizeof (ifr.lifr_name)); - ifr.lifr_ppa = ppa; - /* Assign ppa according to the unit number returned by tun device */ - if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0) - msg (M_ERR, "Can't set PPA %d", ppa); - if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) - msg (M_ERR, "Can't get flags\n"); - /* Push arp module to if_fd */ - if (ioctl (if_fd, I_PUSH, "arp") < 0) - msg (M_ERR, "Can't push ARP module"); + if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) + { + msg(M_ERR, "Can't get flags\n"); + } + strncpynt(ifr.lifr_name, tt->actual_name, sizeof(ifr.lifr_name)); + ifr.lifr_ppa = ppa; + /* Assign ppa according to the unit number returned by tun device */ + if (ioctl(if_fd, SIOCSLIFNAME, &ifr) < 0) + { + msg(M_ERR, "Can't set PPA %d", ppa); + } + if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0) + { + msg(M_ERR, "Can't get flags\n"); + } + /* Push arp module to if_fd */ + if (ioctl(if_fd, I_PUSH, "arp") < 0) + { + msg(M_ERR, "Can't push ARP module"); + } - /* Pop any modules on the stream */ - while (true) + /* Pop any modules on the stream */ + while (true) + { + if (ioctl(tt->ip_fd, I_POP, NULL) < 0) { - if (ioctl (tt->ip_fd, I_POP, NULL) < 0) - break; + break; } - /* Push arp module to ip_fd */ - if (ioctl (tt->ip_fd, I_PUSH, "arp") < 0) - msg (M_ERR, "Can't push ARP module\n"); + } + /* Push arp module to ip_fd */ + if (ioctl(tt->ip_fd, I_PUSH, "arp") < 0) + { + msg(M_ERR, "Can't push ARP module\n"); + } - /* Open arp_fd */ - if ((arp_fd = open (arp_node, O_RDWR, 0)) < 0) - msg (M_ERR, "Can't open %s\n", arp_node); - /* Push arp module to arp_fd */ - if (ioctl (arp_fd, I_PUSH, "arp") < 0) - msg (M_ERR, "Can't push ARP module\n"); + /* Open arp_fd */ + if ((arp_fd = open(arp_node, O_RDWR, 0)) < 0) + { + msg(M_ERR, "Can't open %s\n", arp_node); + } + /* Push arp module to arp_fd */ + if (ioctl(arp_fd, I_PUSH, "arp") < 0) + { + msg(M_ERR, "Can't push ARP module\n"); + } - /* Set ifname to arp */ - strioc_if.ic_cmd = SIOCSLIFNAME; - strioc_if.ic_timout = 0; - strioc_if.ic_len = sizeof(ifr); - strioc_if.ic_dp = (char *)𝔦 - if (ioctl(arp_fd, I_STR, &strioc_if) < 0){ - msg (M_ERR, "Can't set ifname to arp\n"); - } - } + /* Set ifname to arp */ + strioc_if.ic_cmd = SIOCSLIFNAME; + strioc_if.ic_timout = 0; + strioc_if.ic_len = sizeof(ifr); + strioc_if.ic_dp = (char *)𝔦 + if (ioctl(arp_fd, I_STR, &strioc_if) < 0) + { + msg(M_ERR, "Can't set ifname to arp\n"); + } + } - if ((ip_muxid = ioctl (tt->ip_fd, link_type, if_fd)) < 0) - msg (M_ERR, "Can't link %s device to IP", dev_tuntap_type); + if ((ip_muxid = ioctl(tt->ip_fd, link_type, if_fd)) < 0) + { + msg(M_ERR, "Can't link %s device to IP", dev_tuntap_type); + } - if (tt->type == DEV_TYPE_TAP) { - if ((arp_muxid = ioctl (tt->ip_fd, link_type, arp_fd)) < 0) - msg (M_ERR, "Can't link %s device to ARP", dev_tuntap_type); - close (arp_fd); - } + if (tt->type == DEV_TYPE_TAP) + { + if ((arp_muxid = ioctl(tt->ip_fd, link_type, arp_fd)) < 0) + { + msg(M_ERR, "Can't link %s device to ARP", dev_tuntap_type); + } + close(arp_fd); + } - CLEAR (ifr); - strncpynt (ifr.lifr_name, tt->actual_name, sizeof (ifr.lifr_name)); - ifr.lifr_ip_muxid = ip_muxid; - if (tt->type == DEV_TYPE_TAP) { - ifr.lifr_arp_muxid = arp_muxid; - } + CLEAR(ifr); + strncpynt(ifr.lifr_name, tt->actual_name, sizeof(ifr.lifr_name)); + ifr.lifr_ip_muxid = ip_muxid; + if (tt->type == DEV_TYPE_TAP) + { + ifr.lifr_arp_muxid = arp_muxid; + } - if (ioctl (tt->ip_fd, SIOCSLIFMUXID, &ifr) < 0) + if (ioctl(tt->ip_fd, SIOCSLIFMUXID, &ifr) < 0) { - if (tt->type == DEV_TYPE_TAP) + if (tt->type == DEV_TYPE_TAP) { - ioctl (tt->ip_fd, I_PUNLINK , arp_muxid); + ioctl(tt->ip_fd, I_PUNLINK, arp_muxid); } - ioctl (tt->ip_fd, I_PUNLINK, ip_muxid); - msg (M_ERR, "Can't set multiplexor id"); + ioctl(tt->ip_fd, I_PUNLINK, ip_muxid); + msg(M_ERR, "Can't set multiplexor id"); } - set_nonblock (tt->fd); - set_cloexec (tt->fd); - set_cloexec (tt->ip_fd); + set_nonblock(tt->fd); + set_cloexec(tt->fd); + set_cloexec(tt->ip_fd); - msg (M_INFO, "TUN/TAP device %s opened", tt->actual_name); + msg(M_INFO, "TUN/TAP device %s opened", tt->actual_name); } static void -solaris_close_tun (struct tuntap *tt) -{ - if (tt) - { - /* IPv6 interfaces need to be 'manually' de-configured */ - if ( tt->did_ifconfig_ipv6_setup ) - { - struct argv argv = argv_new (); - argv_printf( &argv, "%s %s inet6 unplumb", - IFCONFIG_PATH, tt->actual_name ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "Solaris ifconfig inet6 unplumb failed"); - argv_reset (&argv); - } - - if (tt->ip_fd >= 0) - { - struct lifreq ifr; - CLEAR (ifr); - strncpynt (ifr.lifr_name, tt->actual_name, sizeof (ifr.lifr_name)); - - if (ioctl (tt->ip_fd, SIOCGLIFFLAGS, &ifr) < 0) - msg (M_WARN | M_ERRNO, "Can't get iface flags"); - - if (ioctl (tt->ip_fd, SIOCGLIFMUXID, &ifr) < 0) - msg (M_WARN | M_ERRNO, "Can't get multiplexor id"); - - if (tt->type == DEV_TYPE_TAP) +solaris_close_tun(struct tuntap *tt) +{ + if (tt) + { + /* IPv6 interfaces need to be 'manually' de-configured */ + if (tt->did_ifconfig_ipv6_setup) + { + struct argv argv = argv_new(); + argv_printf( &argv, "%s %s inet6 unplumb", + IFCONFIG_PATH, tt->actual_name ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "Solaris ifconfig inet6 unplumb failed"); + argv_reset(&argv); + } + + if (tt->ip_fd >= 0) + { + struct lifreq ifr; + CLEAR(ifr); + strncpynt(ifr.lifr_name, tt->actual_name, sizeof(ifr.lifr_name)); + + if (ioctl(tt->ip_fd, SIOCGLIFFLAGS, &ifr) < 0) + { + msg(M_WARN | M_ERRNO, "Can't get iface flags"); + } + + if (ioctl(tt->ip_fd, SIOCGLIFMUXID, &ifr) < 0) + { + msg(M_WARN | M_ERRNO, "Can't get multiplexor id"); + } + + if (tt->type == DEV_TYPE_TAP) { - if (ioctl (tt->ip_fd, I_PUNLINK, ifr.lifr_arp_muxid) < 0) - msg (M_WARN | M_ERRNO, "Can't unlink interface(arp)"); + if (ioctl(tt->ip_fd, I_PUNLINK, ifr.lifr_arp_muxid) < 0) + { + msg(M_WARN | M_ERRNO, "Can't unlink interface(arp)"); + } } - if (ioctl (tt->ip_fd, I_PUNLINK, ifr.lifr_ip_muxid) < 0) - msg (M_WARN | M_ERRNO, "Can't unlink interface(ip)"); + if (ioctl(tt->ip_fd, I_PUNLINK, ifr.lifr_ip_muxid) < 0) + { + msg(M_WARN | M_ERRNO, "Can't unlink interface(ip)"); + } - close (tt->ip_fd); - tt->ip_fd = -1; - } + close(tt->ip_fd); + tt->ip_fd = -1; + } - if (tt->fd >= 0) - { - close (tt->fd); - tt->fd = -1; - } + if (tt->fd >= 0) + { + close(tt->fd); + tt->fd = -1; + } } } /* - * Close TUN device. + * Close TUN device. */ void -close_tun (struct tuntap *tt) +close_tun(struct tuntap *tt) { - if (tt) + if (tt) { - solaris_close_tun (tt); + solaris_close_tun(tt); + + if (tt->actual_name) + { + free(tt->actual_name); + } - if (tt->actual_name) - free (tt->actual_name); - - clear_tuntap (tt); - free (tt); + clear_tuntap(tt); + free(tt); } } static void -solaris_error_close (struct tuntap *tt, const struct env_set *es, - const char *actual, bool unplumb_inet6 ) +solaris_error_close(struct tuntap *tt, const struct env_set *es, + const char *actual, bool unplumb_inet6 ) { - struct argv argv = argv_new (); + struct argv argv = argv_new(); - if (unplumb_inet6) + if (unplumb_inet6) { - argv_printf( &argv, "%s %s inet6 unplumb", - IFCONFIG_PATH, actual ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, 0, "Solaris ifconfig inet6 unplumb failed"); + argv_printf( &argv, "%s %s inet6 unplumb", + IFCONFIG_PATH, actual ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, 0, "Solaris ifconfig inet6 unplumb failed"); } - argv_printf (&argv, - "%s %s unplumb", - IFCONFIG_PATH, - actual); + argv_printf(&argv, + "%s %s unplumb", + IFCONFIG_PATH, + actual); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, 0, "Solaris ifconfig unplumb failed"); - close_tun (tt); - msg (M_FATAL, "Solaris ifconfig failed"); - argv_reset (&argv); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, es, 0, "Solaris ifconfig unplumb failed"); + close_tun(tt); + msg(M_FATAL, "Solaris ifconfig failed"); + argv_reset(&argv); } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - struct strbuf sbuf; - sbuf.len = len; - sbuf.buf = (char *)buf; - return putmsg (tt->fd, NULL, &sbuf, 0) >= 0 ? sbuf.len : -1; + struct strbuf sbuf; + sbuf.len = len; + sbuf.buf = (char *)buf; + return putmsg(tt->fd, NULL, &sbuf, 0) >= 0 ? sbuf.len : -1; } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - struct strbuf sbuf; - int f = 0; + struct strbuf sbuf; + int f = 0; - sbuf.maxlen = len; - sbuf.buf = (char *)buf; - return getmsg (tt->fd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1; + sbuf.maxlen = len; + sbuf.buf = (char *)buf; + return getmsg(tt->fd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1; } #elif defined(TARGET_OPENBSD) void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - open_tun_generic (dev, dev_type, dev_node, true, tt); + open_tun_generic(dev, dev_type, dev_node, true, tt); - /* Enable multicast on the interface */ - if (tt->fd >= 0) + /* Enable multicast on the interface */ + if (tt->fd >= 0) { - struct tuninfo info; + struct tuninfo info; - if (ioctl (tt->fd, TUNGIFINFO, &info) < 0) { - msg (M_WARN | M_ERRNO, "Can't get interface info: %s", - strerror(errno)); - } + if (ioctl(tt->fd, TUNGIFINFO, &info) < 0) + { + msg(M_WARN | M_ERRNO, "Can't get interface info: %s", + strerror(errno)); + } #ifdef IFF_MULTICAST /* openbsd 4.x doesn't have this */ - info.flags |= IFF_MULTICAST; + info.flags |= IFF_MULTICAST; #endif - if (ioctl (tt->fd, TUNSIFINFO, &info) < 0) { - msg (M_WARN | M_ERRNO, "Can't set interface info: %s", - strerror(errno)); - } + if (ioctl(tt->fd, TUNSIFINFO, &info) < 0) + { + msg(M_WARN | M_ERRNO, "Can't set interface info: %s", + strerror(errno)); + } } } @@ -2379,45 +2581,45 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tu */ void -close_tun (struct tuntap* tt) +close_tun(struct tuntap *tt) { - /* only *TAP* devices need destroying, tun devices auto-self-destruct - */ - if (tt && (tt->type == DEV_TYPE_TUN || tt->persistent_if ) ) + /* only *TAP* devices need destroying, tun devices auto-self-destruct + */ + if (tt && (tt->type == DEV_TYPE_TUN || tt->persistent_if ) ) { - close_tun_generic (tt); - free(tt); + close_tun_generic(tt); + free(tt); } - else if (tt) + else if (tt) { - struct gc_arena gc = gc_new (); - struct argv argv = argv_new (); + struct gc_arena gc = gc_new(); + struct argv argv = argv_new(); - /* setup command, close tun dev (clears tt->actual_name!), run command - */ + /* setup command, close tun dev (clears tt->actual_name!), run command + */ - argv_printf (&argv, "%s %s destroy", - IFCONFIG_PATH, tt->actual_name); + argv_printf(&argv, "%s %s destroy", + IFCONFIG_PATH, tt->actual_name); - close_tun_generic (tt); + close_tun_generic(tt); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "OpenBSD 'destroy tun interface' failed (non-critical)"); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "OpenBSD 'destroy tun interface' failed (non-critical)"); - free (tt); + free(tt); } } int write_tun(struct tuntap *tt, uint8_t *buf, int len) { - return write_tun_header (tt, buf, len); + return write_tun_header(tt, buf, len); } int -read_tun (struct tuntap *tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - return read_tun_header (tt, buf, len); + return read_tun_header(tt, buf, len); } #elif defined(TARGET_NETBSD) @@ -2437,26 +2639,26 @@ read_tun (struct tuntap *tt, uint8_t *buf, int len) */ void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - open_tun_generic (dev, dev_type, dev_node, true, tt); + open_tun_generic(dev, dev_type, dev_node, true, tt); if (tt->fd >= 0) - { + { int i = IFF_POINTOPOINT|IFF_MULTICAST; - ioctl (tt->fd, TUNSIFMODE, &i); /* multicast on */ + ioctl(tt->fd, TUNSIFMODE, &i); /* multicast on */ i = 0; - ioctl (tt->fd, TUNSLMODE, &i); /* link layer mode off */ + ioctl(tt->fd, TUNSLMODE, &i); /* link layer mode off */ - if ( tt->type == DEV_TYPE_TUN ) - { - i = 1; - if (ioctl (tt->fd, TUNSIFHEAD, &i) < 0) /* multi-af mode on */ - { - msg (M_WARN | M_ERRNO, "ioctl(TUNSIFHEAD): %s", strerror(errno)); - } - } - } + if (tt->type == DEV_TYPE_TUN) + { + i = 1; + if (ioctl(tt->fd, TUNSIFHEAD, &i) < 0) /* multi-af mode on */ + { + msg(M_WARN | M_ERRNO, "ioctl(TUNSIFHEAD): %s", strerror(errno)); + } + } + } } /* the current way OpenVPN handles tun devices on NetBSD leads to @@ -2464,117 +2666,135 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tu * need to be explicitely destroyed */ void -close_tun (struct tuntap *tt) +close_tun(struct tuntap *tt) { - /* only tun devices need destroying, tap devices auto-self-destruct - */ - if (tt && ( tt->type != DEV_TYPE_TUN || tt->persistent_if ) ) + /* only tun devices need destroying, tap devices auto-self-destruct + */ + if (tt && ( tt->type != DEV_TYPE_TUN || tt->persistent_if ) ) { - close_tun_generic (tt); - free(tt); + close_tun_generic(tt); + free(tt); } - else if (tt) + else if (tt) { - struct gc_arena gc = gc_new (); - struct argv argv = argv_new (); + struct gc_arena gc = gc_new(); + struct argv argv = argv_new(); - /* setup command, close tun dev (clears tt->actual_name!), run command - */ + /* setup command, close tun dev (clears tt->actual_name!), run command + */ - argv_printf (&argv, "%s %s destroy", - IFCONFIG_PATH, tt->actual_name); + argv_printf(&argv, "%s %s destroy", + IFCONFIG_PATH, tt->actual_name); - close_tun_generic (tt); + close_tun_generic(tt); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "NetBSD 'destroy tun interface' failed (non-critical)"); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "NetBSD 'destroy tun interface' failed (non-critical)"); - free (tt); + free(tt); } } static inline int -netbsd_modify_read_write_return (int len) +netbsd_modify_read_write_return(int len) { - if (len > 0) - return len > sizeof (u_int32_t) ? len - sizeof (u_int32_t) : 0; - else - return len; + if (len > 0) + { + return len > sizeof(u_int32_t) ? len - sizeof(u_int32_t) : 0; + } + else + { + return len; + } } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - if (tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) { - u_int32_t type; - struct iovec iv[2]; - struct openvpn_iphdr *iph; + u_int32_t type; + struct iovec iv[2]; + struct openvpn_iphdr *iph; - iph = (struct openvpn_iphdr *) buf; + iph = (struct openvpn_iphdr *) buf; - if (OPENVPN_IPH_GET_VER(iph->version_len) == 6) - type = htonl (AF_INET6); - else - type = htonl (AF_INET); + if (OPENVPN_IPH_GET_VER(iph->version_len) == 6) + { + type = htonl(AF_INET6); + } + else + { + type = htonl(AF_INET); + } - iv[0].iov_base = (char *)&type; - iv[0].iov_len = sizeof (type); - iv[1].iov_base = buf; - iv[1].iov_len = len; + iv[0].iov_base = (char *)&type; + iv[0].iov_len = sizeof(type); + iv[1].iov_base = buf; + iv[1].iov_len = len; - return netbsd_modify_read_write_return (writev (tt->fd, iv, 2)); + return netbsd_modify_read_write_return(writev(tt->fd, iv, 2)); + } + else + { + return write(tt->fd, buf, len); } - else - return write (tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - if (tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) { - u_int32_t type; - struct iovec iv[2]; + u_int32_t type; + struct iovec iv[2]; - iv[0].iov_base = (char *)&type; - iv[0].iov_len = sizeof (type); - iv[1].iov_base = buf; - iv[1].iov_len = len; + iv[0].iov_base = (char *)&type; + iv[0].iov_len = sizeof(type); + iv[1].iov_base = buf; + iv[1].iov_len = len; - return netbsd_modify_read_write_return (readv (tt->fd, iv, 2)); + return netbsd_modify_read_write_return(readv(tt->fd, iv, 2)); + } + else + { + return read(tt->fd, buf, len); } - else - return read (tt->fd, buf, len); } #elif defined(TARGET_FREEBSD) static inline int -freebsd_modify_read_write_return (int len) +freebsd_modify_read_write_return(int len) { - if (len > 0) - return len > sizeof (u_int32_t) ? len - sizeof (u_int32_t) : 0; - else - return len; + if (len > 0) + { + return len > sizeof(u_int32_t) ? len - sizeof(u_int32_t) : 0; + } + else + { + return len; + } } void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - open_tun_generic (dev, dev_type, dev_node, true, tt); + open_tun_generic(dev, dev_type, dev_node, true, tt); - if (tt->fd >= 0 && tt->type == DEV_TYPE_TUN) + if (tt->fd >= 0 && tt->type == DEV_TYPE_TUN) { - int i = IFF_POINTOPOINT | IFF_MULTICAST; + int i = IFF_POINTOPOINT | IFF_MULTICAST; - if (ioctl (tt->fd, TUNSIFMODE, &i) < 0) { - msg (M_WARN | M_ERRNO, "ioctl(TUNSIFMODE): %s", strerror(errno)); - } - i = 1; - if (ioctl (tt->fd, TUNSIFHEAD, &i) < 0) { - msg (M_WARN | M_ERRNO, "ioctl(TUNSIFHEAD): %s", strerror(errno)); - } + if (ioctl(tt->fd, TUNSIFMODE, &i) < 0) + { + msg(M_WARN | M_ERRNO, "ioctl(TUNSIFMODE): %s", strerror(errno)); + } + i = 1; + if (ioctl(tt->fd, TUNSIFHEAD, &i) < 0) + { + msg(M_WARN | M_ERRNO, "ioctl(TUNSIFHEAD): %s", strerror(errno)); + } } } @@ -2586,159 +2806,179 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tu * we need to call "ifconfig ... destroy" for cleanup */ void -close_tun (struct tuntap *tt) +close_tun(struct tuntap *tt) { - if (tt && tt->persistent_if ) /* keep pre-existing if around */ + if (tt && tt->persistent_if) /* keep pre-existing if around */ { - close_tun_generic (tt); - free (tt); + close_tun_generic(tt); + free(tt); } - else if (tt) /* close and destroy */ + else if (tt) /* close and destroy */ { - struct argv argv = argv_new (); + struct argv argv = argv_new(); - /* setup command, close tun dev (clears tt->actual_name!), run command - */ + /* setup command, close tun dev (clears tt->actual_name!), run command + */ - argv_printf (&argv, "%s %s destroy", - IFCONFIG_PATH, tt->actual_name); + argv_printf(&argv, "%s %s destroy", + IFCONFIG_PATH, tt->actual_name); - close_tun_generic (tt); + close_tun_generic(tt); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "FreeBSD 'destroy tun interface' failed (non-critical)"); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "FreeBSD 'destroy tun interface' failed (non-critical)"); - free (tt); + free(tt); } } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - if (tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) { - u_int32_t type; - struct iovec iv[2]; - struct ip *iph; + u_int32_t type; + struct iovec iv[2]; + struct ip *iph; - iph = (struct ip *) buf; + iph = (struct ip *) buf; - if (iph->ip_v == 6) - type = htonl (AF_INET6); - else - type = htonl (AF_INET); + if (iph->ip_v == 6) + { + type = htonl(AF_INET6); + } + else + { + type = htonl(AF_INET); + } - iv[0].iov_base = (char *)&type; - iv[0].iov_len = sizeof (type); - iv[1].iov_base = buf; - iv[1].iov_len = len; + iv[0].iov_base = (char *)&type; + iv[0].iov_len = sizeof(type); + iv[1].iov_base = buf; + iv[1].iov_len = len; - return freebsd_modify_read_write_return (writev (tt->fd, iv, 2)); + return freebsd_modify_read_write_return(writev(tt->fd, iv, 2)); + } + else + { + return write(tt->fd, buf, len); } - else - return write (tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - if (tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) { - u_int32_t type; - struct iovec iv[2]; + u_int32_t type; + struct iovec iv[2]; - iv[0].iov_base = (char *)&type; - iv[0].iov_len = sizeof (type); - iv[1].iov_base = buf; - iv[1].iov_len = len; + iv[0].iov_base = (char *)&type; + iv[0].iov_len = sizeof(type); + iv[1].iov_base = buf; + iv[1].iov_len = len; - return freebsd_modify_read_write_return (readv (tt->fd, iv, 2)); + return freebsd_modify_read_write_return(readv(tt->fd, iv, 2)); + } + else + { + return read(tt->fd, buf, len); } - else - return read (tt->fd, buf, len); } #elif defined(TARGET_DRAGONFLY) static inline int -dragonfly_modify_read_write_return (int len) +dragonfly_modify_read_write_return(int len) { - if (len > 0) - return len > sizeof (u_int32_t) ? len - sizeof (u_int32_t) : 0; - else - return len; + if (len > 0) + { + return len > sizeof(u_int32_t) ? len - sizeof(u_int32_t) : 0; + } + else + { + return len; + } } void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - open_tun_generic (dev, dev_type, dev_node, true, tt); + open_tun_generic(dev, dev_type, dev_node, true, tt); - if (tt->fd >= 0) + if (tt->fd >= 0) { - int i = 0; + int i = 0; - /* Disable extended modes */ - ioctl (tt->fd, TUNSLMODE, &i); - i = 1; - ioctl (tt->fd, TUNSIFHEAD, &i); + /* Disable extended modes */ + ioctl(tt->fd, TUNSLMODE, &i); + i = 1; + ioctl(tt->fd, TUNSIFHEAD, &i); } } void -close_tun (struct tuntap *tt) +close_tun(struct tuntap *tt) { - if (tt) + if (tt) { - close_tun_generic (tt); - free (tt); + close_tun_generic(tt); + free(tt); } } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - if (tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) { - u_int32_t type; - struct iovec iv[2]; - struct ip *iph; + u_int32_t type; + struct iovec iv[2]; + struct ip *iph; - iph = (struct ip *) buf; + iph = (struct ip *) buf; - if (iph->ip_v == 6) - type = htonl (AF_INET6); - else - type = htonl (AF_INET); + if (iph->ip_v == 6) + { + type = htonl(AF_INET6); + } + else + { + type = htonl(AF_INET); + } - iv[0].iov_base = (char *)&type; - iv[0].iov_len = sizeof (type); - iv[1].iov_base = buf; - iv[1].iov_len = len; + iv[0].iov_base = (char *)&type; + iv[0].iov_len = sizeof(type); + iv[1].iov_base = buf; + iv[1].iov_len = len; - return dragonfly_modify_read_write_return (writev (tt->fd, iv, 2)); + return dragonfly_modify_read_write_return(writev(tt->fd, iv, 2)); + } + else + { + return write(tt->fd, buf, len); } - else - return write (tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - if (tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) { - u_int32_t type; - struct iovec iv[2]; + u_int32_t type; + struct iovec iv[2]; - iv[0].iov_base = (char *)&type; - iv[0].iov_len = sizeof (type); - iv[1].iov_base = buf; - iv[1].iov_len = len; + iv[0].iov_base = (char *)&type; + iv[0].iov_len = sizeof(type); + iv[1].iov_base = buf; + iv[1].iov_len = len; - return dragonfly_modify_read_write_return (readv (tt->fd, iv, 2)); + return dragonfly_modify_read_write_return(readv(tt->fd, iv, 2)); + } + else + { + return read(tt->fd, buf, len); } - else - return read (tt->fd, buf, len); } #elif defined(TARGET_DARWIN) @@ -2760,1012 +3000,1099 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) #ifdef HAVE_NET_IF_UTUN_H /* Helper functions that tries to open utun device - return -2 on early initialization failures (utun not supported - at all (old OS X) and -1 on initlization failure of utun - device (utun works but utunX is already used */ + * return -2 on early initialization failures (utun not supported + * at all (old OS X) and -1 on initlization failure of utun + * device (utun works but utunX is already used */ static -int utun_open_helper (struct ctl_info ctlInfo, int utunnum) +int +utun_open_helper(struct ctl_info ctlInfo, int utunnum) { - struct sockaddr_ctl sc; - int fd; + struct sockaddr_ctl sc; + int fd; - fd = socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL); + fd = socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL); - if (fd < 0) + if (fd < 0) { - msg (M_INFO, "Opening utun (%s): %s", "socket(SYSPROTO_CONTROL)", - strerror (errno)); - return -2; + msg(M_INFO, "Opening utun (%s): %s", "socket(SYSPROTO_CONTROL)", + strerror(errno)); + return -2; } - if (ioctl(fd, CTLIOCGINFO, &ctlInfo) == -1) + if (ioctl(fd, CTLIOCGINFO, &ctlInfo) == -1) { - close (fd); - msg (M_INFO, "Opening utun (%s): %s", "ioctl(CTLIOCGINFO)", - strerror (errno)); - return -2; + close(fd); + msg(M_INFO, "Opening utun (%s): %s", "ioctl(CTLIOCGINFO)", + strerror(errno)); + return -2; } - sc.sc_id = ctlInfo.ctl_id; - sc.sc_len = sizeof(sc); - sc.sc_family = AF_SYSTEM; - sc.ss_sysaddr = AF_SYS_CONTROL; + sc.sc_id = ctlInfo.ctl_id; + sc.sc_len = sizeof(sc); + sc.sc_family = AF_SYSTEM; + sc.ss_sysaddr = AF_SYS_CONTROL; - sc.sc_unit = utunnum+1; + sc.sc_unit = utunnum+1; - /* If the connect is successful, a utun%d device will be created, where "%d" - * is (sc.sc_unit - 1) */ + /* If the connect is successful, a utun%d device will be created, where "%d" + * is (sc.sc_unit - 1) */ - if (connect (fd, (struct sockaddr *)&sc, sizeof(sc)) < 0) + if (connect(fd, (struct sockaddr *)&sc, sizeof(sc)) < 0) { - msg (M_INFO, "Opening utun (%s): %s", "connect(AF_SYS_CONTROL)", - strerror (errno)); - close(fd); - return -1; + msg(M_INFO, "Opening utun (%s): %s", "connect(AF_SYS_CONTROL)", + strerror(errno)); + close(fd); + return -1; } - set_nonblock (fd); - set_cloexec (fd); /* don't pass fd to scripts */ + set_nonblock(fd); + set_cloexec(fd); /* don't pass fd to scripts */ - return fd; + return fd; } void -open_darwin_utun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_darwin_utun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - struct ctl_info ctlInfo; - int fd; - char utunname[20]; - int utunnum =-1; - socklen_t utunname_len = sizeof(utunname); + struct ctl_info ctlInfo; + int fd; + char utunname[20]; + int utunnum = -1; + socklen_t utunname_len = sizeof(utunname); - /* dev_node is simply utun, do the normal dynamic utun - * otherwise try to parse the utun number */ - if (dev_node && (strcmp("utun", dev_node) != 0 )) + /* dev_node is simply utun, do the normal dynamic utun + * otherwise try to parse the utun number */ + if (dev_node && (strcmp("utun", dev_node) != 0 )) { - if (sscanf(dev_node, "utun%d", &utunnum) != 1 ) - msg (M_FATAL, "Cannot parse 'dev-node %s' please use 'dev-node utunX'" - "to use a utun device number X", dev_node); + if (sscanf(dev_node, "utun%d", &utunnum) != 1) + { + msg(M_FATAL, "Cannot parse 'dev-node %s' please use 'dev-node utunX'" + "to use a utun device number X", dev_node); + } } - CLEAR (ctlInfo); - if (strlcpy(ctlInfo.ctl_name, UTUN_CONTROL_NAME, sizeof(ctlInfo.ctl_name)) >= - sizeof(ctlInfo.ctl_name)) + CLEAR(ctlInfo); + if (strlcpy(ctlInfo.ctl_name, UTUN_CONTROL_NAME, sizeof(ctlInfo.ctl_name)) >= + sizeof(ctlInfo.ctl_name)) { - msg (M_ERR, "Opening utun: UTUN_CONTROL_NAME too long"); + msg(M_ERR, "Opening utun: UTUN_CONTROL_NAME too long"); } - /* try to open first available utun device if no specific utun is requested */ - if (utunnum == -1) + /* try to open first available utun device if no specific utun is requested */ + if (utunnum == -1) { - for (utunnum=0; utunnum<255; utunnum++) + for (utunnum = 0; utunnum<255; utunnum++) { - fd = utun_open_helper (ctlInfo, utunnum); - /* Break if the fd is valid, - * or if early initalization failed (-2) */ - if (fd !=-1) - break; + fd = utun_open_helper(ctlInfo, utunnum); + /* Break if the fd is valid, + * or if early initalization failed (-2) */ + if (fd !=-1) + { + break; + } } } - else + else { - fd = utun_open_helper (ctlInfo, utunnum); + fd = utun_open_helper(ctlInfo, utunnum); } - /* opening an utun device failed */ - tt->fd = fd; + /* opening an utun device failed */ + tt->fd = fd; - if (fd < 0) - return; + if (fd < 0) + { + return; + } - /* Retrieve the assigned interface name. */ - if (getsockopt (fd, SYSPROTO_CONTROL, UTUN_OPT_IFNAME, utunname, &utunname_len)) - msg (M_ERR | M_ERRNO, "Error retrieving utun interface name"); + /* Retrieve the assigned interface name. */ + if (getsockopt(fd, SYSPROTO_CONTROL, UTUN_OPT_IFNAME, utunname, &utunname_len)) + { + msg(M_ERR | M_ERRNO, "Error retrieving utun interface name"); + } - tt->actual_name = string_alloc (utunname, NULL); + tt->actual_name = string_alloc(utunname, NULL); - msg (M_INFO, "Opened utun device %s", utunname); - tt->is_utun = true; + msg(M_INFO, "Opened utun device %s", utunname); + tt->is_utun = true; } -#endif +#endif /* ifdef HAVE_NET_IF_UTUN_H */ void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { #ifdef HAVE_NET_IF_UTUN_H - /* If dev_node does not start start with utun assume regular tun/tap */ - if ((!dev_node && tt->type==DEV_TYPE_TUN) || - (dev_node && !strncmp (dev_node, "utun", 4))) + /* If dev_node does not start start with utun assume regular tun/tap */ + if ((!dev_node && tt->type==DEV_TYPE_TUN) + || (dev_node && !strncmp(dev_node, "utun", 4))) { - /* Check if user has specific dev_type tap and forced utun with - dev-node utun */ - if (tt->type!=DEV_TYPE_TUN) - msg (M_FATAL, "Cannot use utun devices with --dev-type %s", - dev_type_string (dev, dev_type)); + /* Check if user has specific dev_type tap and forced utun with + * dev-node utun */ + if (tt->type!=DEV_TYPE_TUN) + { + msg(M_FATAL, "Cannot use utun devices with --dev-type %s", + dev_type_string(dev, dev_type)); + } - /* Try utun first and fall back to normal tun if utun fails - and dev_node is not specified */ - open_darwin_utun(dev, dev_type, dev_node, tt); + /* Try utun first and fall back to normal tun if utun fails + * and dev_node is not specified */ + open_darwin_utun(dev, dev_type, dev_node, tt); - if (!tt->is_utun) + if (!tt->is_utun) { - if (!dev_node) + if (!dev_node) { - /* No explicit utun and utun failed, try the generic way) */ - msg (M_INFO, "Failed to open utun device. Falling back to /dev/tun device"); - open_tun_generic (dev, dev_type, NULL, true, tt); + /* No explicit utun and utun failed, try the generic way) */ + msg(M_INFO, "Failed to open utun device. Falling back to /dev/tun device"); + open_tun_generic(dev, dev_type, NULL, true, tt); } - else + else { - /* Specific utun device or generic utun request with no tun - fall back failed, consider this a fatal failure */ - msg (M_FATAL, "Cannot open utun device"); + /* Specific utun device or generic utun request with no tun + * fall back failed, consider this a fatal failure */ + msg(M_FATAL, "Cannot open utun device"); } } } - else -#endif + else +#endif /* ifdef HAVE_NET_IF_UTUN_H */ { - /* Use plain dev-node tun to select /dev/tun style - * Unset dev_node variable prior to passing to open_tun_generic to - * let open_tun_generic pick the first available tun device */ + /* Use plain dev-node tun to select /dev/tun style + * Unset dev_node variable prior to passing to open_tun_generic to + * let open_tun_generic pick the first available tun device */ - if (dev_node && strcmp (dev_node, "tun")==0) - dev_node=NULL; + if (dev_node && strcmp(dev_node, "tun")==0) + { + dev_node = NULL; + } - open_tun_generic (dev, dev_type, dev_node, true, tt); + open_tun_generic(dev, dev_type, dev_node, true, tt); } } void -close_tun (struct tuntap* tt) +close_tun(struct tuntap *tt) { - if (tt) + if (tt) { - struct gc_arena gc = gc_new (); - struct argv argv = argv_new (); + struct gc_arena gc = gc_new(); + struct argv argv = argv_new(); - if (tt->did_ifconfig_ipv6_setup ) - { - const char * ifconfig_ipv6_local = - print_in6_addr (tt->local_ipv6, 0, &gc); + if (tt->did_ifconfig_ipv6_setup) + { + const char *ifconfig_ipv6_local = + print_in6_addr(tt->local_ipv6, 0, &gc); - argv_printf (&argv, "%s delete -inet6 %s", - ROUTE_PATH, ifconfig_ipv6_local ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, NULL, 0, "MacOS X 'remove inet6 route' failed (non-critical)"); - } + argv_printf(&argv, "%s delete -inet6 %s", + ROUTE_PATH, ifconfig_ipv6_local ); + argv_msg(M_INFO, &argv); + openvpn_execve_check(&argv, NULL, 0, "MacOS X 'remove inet6 route' failed (non-critical)"); + } - close_tun_generic (tt); - free (tt); - argv_reset (&argv); - gc_free (&gc); + close_tun_generic(tt); + free(tt); + argv_reset(&argv); + gc_free(&gc); } } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { #ifdef HAVE_NET_IF_UTUN_H - if (tt->is_utun) - return write_tun_header (tt, buf, len); - else + if (tt->is_utun) + { + return write_tun_header(tt, buf, len); + } + else #endif - return write (tt->fd, buf, len); + return write(tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { #ifdef HAVE_NET_IF_UTUN_H - if (tt->is_utun) - return read_tun_header (tt, buf, len); - else + if (tt->is_utun) + { + return read_tun_header(tt, buf, len); + } + else #endif - return read (tt->fd, buf, len); + return read(tt->fd, buf, len); } #elif defined(TARGET_AIX) void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - char tunname[256]; - char dynamic_name[20]; - const char *p; + char tunname[256]; + char dynamic_name[20]; + const char *p; - if (tt->type == DEV_TYPE_NULL) + if (tt->type == DEV_TYPE_NULL) { - open_null (tt); - return; + open_null(tt); + return; } - if ( tt->type == DEV_TYPE_TUN) + if (tt->type == DEV_TYPE_TUN) { - msg(M_FATAL, "no support for 'tun' devices on AIX" ); + msg(M_FATAL, "no support for 'tun' devices on AIX" ); } - if ( strncmp( dev, "tap", 3 ) != 0 || dev_node ) + if (strncmp( dev, "tap", 3 ) != 0 || dev_node) { - msg(M_FATAL, "'--dev %s' and/or '--dev-node' not supported on AIX, use '--dev tap0', 'tap1', etc.", dev ); + msg(M_FATAL, "'--dev %s' and/or '--dev-node' not supported on AIX, use '--dev tap0', 'tap1', etc.", dev ); } - if ( strcmp( dev, "tap" ) == 0 ) /* find first free tap dev */ - { /* (= no /dev/tapN node) */ - int i; - for (i=0; i<99; i++ ) - { - openvpn_snprintf (tunname, sizeof (tunname), "/dev/tap%d", i); - if ( access( tunname, F_OK ) < 0 && errno == ENOENT ) - { break; } - } - if ( i >= 99 ) - msg( M_FATAL, "cannot find unused tap device" ); + if (strcmp( dev, "tap" ) == 0) /* find first free tap dev */ + { /* (= no /dev/tapN node) */ + int i; + for (i = 0; i<99; i++) + { + openvpn_snprintf(tunname, sizeof(tunname), "/dev/tap%d", i); + if (access( tunname, F_OK ) < 0 && errno == ENOENT) + { + break; + } + } + if (i >= 99) + { + msg( M_FATAL, "cannot find unused tap device" ); + } - openvpn_snprintf( dynamic_name, sizeof(dynamic_name), "tap%d", i ); - dev = dynamic_name; + openvpn_snprintf( dynamic_name, sizeof(dynamic_name), "tap%d", i ); + dev = dynamic_name; } - else /* name given, sanity check */ + else /* name given, sanity check */ { - /* ensure that dev name is "tap+<digits>" *only* */ - p = &dev[3]; - while( isdigit(*p) ) p++; - if ( *p != '\0' ) - msg( M_FATAL, "TAP device name must be '--dev tapNNNN'" ); + /* ensure that dev name is "tap+<digits>" *only* */ + p = &dev[3]; + while (isdigit(*p) ) p++; + if (*p != '\0') + { + msg( M_FATAL, "TAP device name must be '--dev tapNNNN'" ); + } - openvpn_snprintf (tunname, sizeof (tunname), "/dev/%s", dev); + openvpn_snprintf(tunname, sizeof(tunname), "/dev/%s", dev); } - /* pre-existing device? - */ - if ( access( tunname, F_OK ) < 0 && errno == ENOENT ) + /* pre-existing device? + */ + if (access( tunname, F_OK ) < 0 && errno == ENOENT) { - /* tunnel device must be created with 'ifconfig tapN create' - */ - struct argv argv = argv_new (); - struct env_set *es = env_set_create (NULL); - argv_printf (&argv, "%s %s create", IFCONFIG_PATH, dev); - argv_msg (M_INFO, &argv); - env_set_add( es, "ODMDIR=/etc/objrepos" ); - openvpn_execve_check (&argv, es, S_FATAL, "AIX 'create tun interface' failed"); - env_set_destroy (es); + /* tunnel device must be created with 'ifconfig tapN create' + */ + struct argv argv = argv_new(); + struct env_set *es = env_set_create(NULL); + argv_printf(&argv, "%s %s create", IFCONFIG_PATH, dev); + argv_msg(M_INFO, &argv); + env_set_add( es, "ODMDIR=/etc/objrepos" ); + openvpn_execve_check(&argv, es, S_FATAL, "AIX 'create tun interface' failed"); + env_set_destroy(es); } - else + else { - /* we didn't make it, we're not going to break it */ - tt->persistent_if = TRUE; + /* we didn't make it, we're not going to break it */ + tt->persistent_if = TRUE; } - if ((tt->fd = open (tunname, O_RDWR)) < 0) + if ((tt->fd = open(tunname, O_RDWR)) < 0) { - msg (M_ERR, "Cannot open TAP device '%s'", tunname); + msg(M_ERR, "Cannot open TAP device '%s'", tunname); } - set_nonblock (tt->fd); - set_cloexec (tt->fd); /* don't pass fd to scripts */ - msg (M_INFO, "TUN/TAP device %s opened", tunname); + set_nonblock(tt->fd); + set_cloexec(tt->fd); /* don't pass fd to scripts */ + msg(M_INFO, "TUN/TAP device %s opened", tunname); - /* tt->actual_name is passed to up and down scripts and used as the ifconfig dev name */ - tt->actual_name = string_alloc(dev, NULL); + /* tt->actual_name is passed to up and down scripts and used as the ifconfig dev name */ + tt->actual_name = string_alloc(dev, NULL); } /* tap devices need to be manually destroyed on AIX */ void -close_tun (struct tuntap* tt) +close_tun(struct tuntap *tt) { - struct gc_arena gc = gc_new (); - struct argv argv = argv_new (); - struct env_set *es = env_set_create (NULL); + struct gc_arena gc = gc_new(); + struct argv argv = argv_new(); + struct env_set *es = env_set_create(NULL); - if (!tt) return; + if (!tt) + { + return; + } - /* persistent devices need IP address unconfig, others need destroyal - */ - if (tt->persistent_if) + /* persistent devices need IP address unconfig, others need destroyal + */ + if (tt->persistent_if) { - argv_printf (&argv, "%s %s 0.0.0.0 down", - IFCONFIG_PATH, tt->actual_name); + argv_printf(&argv, "%s %s 0.0.0.0 down", + IFCONFIG_PATH, tt->actual_name); } - else + else { - argv_printf (&argv, "%s %s destroy", - IFCONFIG_PATH, tt->actual_name); + argv_printf(&argv, "%s %s destroy", + IFCONFIG_PATH, tt->actual_name); } - close_tun_generic (tt); - argv_msg (M_INFO, &argv); - env_set_add( es, "ODMDIR=/etc/objrepos" ); - openvpn_execve_check (&argv, es, 0, "AIX 'destroy tap interface' failed (non-critical)"); + close_tun_generic(tt); + argv_msg(M_INFO, &argv); + env_set_add( es, "ODMDIR=/etc/objrepos" ); + openvpn_execve_check(&argv, es, 0, "AIX 'destroy tap interface' failed (non-critical)"); - free(tt); - env_set_destroy (es); + free(tt); + env_set_destroy(es); } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - return write (tt->fd, buf, len); + return write(tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - return read (tt->fd, buf, len); + return read(tt->fd, buf, len); } #elif defined(_WIN32) int -tun_read_queue (struct tuntap *tt, int maxsize) -{ - if (tt->reads.iostate == IOSTATE_INITIAL) - { - DWORD len; - BOOL status; - int err; - - /* reset buf to its initial state */ - tt->reads.buf = tt->reads.buf_init; - - len = maxsize ? maxsize : BLEN (&tt->reads.buf); - ASSERT (len <= BLEN (&tt->reads.buf)); - - /* the overlapped read will signal this event on I/O completion */ - ASSERT (ResetEvent (tt->reads.overlapped.hEvent)); - - status = ReadFile( - tt->hand, - BPTR (&tt->reads.buf), - len, - &tt->reads.size, - &tt->reads.overlapped - ); - - if (status) /* operation completed immediately? */ - { - /* since we got an immediate return, we must signal the event object ourselves */ - ASSERT (SetEvent (tt->reads.overlapped.hEvent)); - - tt->reads.iostate = IOSTATE_IMMEDIATE_RETURN; - tt->reads.status = 0; - - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Read immediate return [%d,%d]", - (int) len, - (int) tt->reads.size); - } - else - { - err = GetLastError (); - if (err == ERROR_IO_PENDING) /* operation queued? */ - { - tt->reads.iostate = IOSTATE_QUEUED; - tt->reads.status = err; - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Read queued [%d]", - (int) len); - } - else /* error occurred */ - { - struct gc_arena gc = gc_new (); - ASSERT (SetEvent (tt->reads.overlapped.hEvent)); - tt->reads.iostate = IOSTATE_IMMEDIATE_RETURN; - tt->reads.status = err; - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Read error [%d] : %s", - (int) len, - strerror_win32 (status, &gc)); - gc_free (&gc); - } - } - } - return tt->reads.iostate; +tun_read_queue(struct tuntap *tt, int maxsize) +{ + if (tt->reads.iostate == IOSTATE_INITIAL) + { + DWORD len; + BOOL status; + int err; + + /* reset buf to its initial state */ + tt->reads.buf = tt->reads.buf_init; + + len = maxsize ? maxsize : BLEN(&tt->reads.buf); + ASSERT(len <= BLEN(&tt->reads.buf)); + + /* the overlapped read will signal this event on I/O completion */ + ASSERT(ResetEvent(tt->reads.overlapped.hEvent)); + + status = ReadFile( + tt->hand, + BPTR(&tt->reads.buf), + len, + &tt->reads.size, + &tt->reads.overlapped + ); + + if (status) /* operation completed immediately? */ + { + /* since we got an immediate return, we must signal the event object ourselves */ + ASSERT(SetEvent(tt->reads.overlapped.hEvent)); + + tt->reads.iostate = IOSTATE_IMMEDIATE_RETURN; + tt->reads.status = 0; + + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Read immediate return [%d,%d]", + (int) len, + (int) tt->reads.size); + } + else + { + err = GetLastError(); + if (err == ERROR_IO_PENDING) /* operation queued? */ + { + tt->reads.iostate = IOSTATE_QUEUED; + tt->reads.status = err; + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Read queued [%d]", + (int) len); + } + else /* error occurred */ + { + struct gc_arena gc = gc_new(); + ASSERT(SetEvent(tt->reads.overlapped.hEvent)); + tt->reads.iostate = IOSTATE_IMMEDIATE_RETURN; + tt->reads.status = err; + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Read error [%d] : %s", + (int) len, + strerror_win32(status, &gc)); + gc_free(&gc); + } + } + } + return tt->reads.iostate; } int -tun_write_queue (struct tuntap *tt, struct buffer *buf) -{ - if (tt->writes.iostate == IOSTATE_INITIAL) - { - BOOL status; - int err; - - /* make a private copy of buf */ - tt->writes.buf = tt->writes.buf_init; - tt->writes.buf.len = 0; - ASSERT (buf_copy (&tt->writes.buf, buf)); - - /* the overlapped write will signal this event on I/O completion */ - ASSERT (ResetEvent (tt->writes.overlapped.hEvent)); - - status = WriteFile( - tt->hand, - BPTR (&tt->writes.buf), - BLEN (&tt->writes.buf), - &tt->writes.size, - &tt->writes.overlapped - ); - - if (status) /* operation completed immediately? */ - { - tt->writes.iostate = IOSTATE_IMMEDIATE_RETURN; - - /* since we got an immediate return, we must signal the event object ourselves */ - ASSERT (SetEvent (tt->writes.overlapped.hEvent)); - - tt->writes.status = 0; - - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Write immediate return [%d,%d]", - BLEN (&tt->writes.buf), - (int) tt->writes.size); - } - else - { - err = GetLastError (); - if (err == ERROR_IO_PENDING) /* operation queued? */ - { - tt->writes.iostate = IOSTATE_QUEUED; - tt->writes.status = err; - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Write queued [%d]", - BLEN (&tt->writes.buf)); - } - else /* error occurred */ - { - struct gc_arena gc = gc_new (); - ASSERT (SetEvent (tt->writes.overlapped.hEvent)); - tt->writes.iostate = IOSTATE_IMMEDIATE_RETURN; - tt->writes.status = err; - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Write error [%d] : %s", - BLEN (&tt->writes.buf), - strerror_win32 (err, &gc)); - gc_free (&gc); - } - } - } - return tt->writes.iostate; +tun_write_queue(struct tuntap *tt, struct buffer *buf) +{ + if (tt->writes.iostate == IOSTATE_INITIAL) + { + BOOL status; + int err; + + /* make a private copy of buf */ + tt->writes.buf = tt->writes.buf_init; + tt->writes.buf.len = 0; + ASSERT(buf_copy(&tt->writes.buf, buf)); + + /* the overlapped write will signal this event on I/O completion */ + ASSERT(ResetEvent(tt->writes.overlapped.hEvent)); + + status = WriteFile( + tt->hand, + BPTR(&tt->writes.buf), + BLEN(&tt->writes.buf), + &tt->writes.size, + &tt->writes.overlapped + ); + + if (status) /* operation completed immediately? */ + { + tt->writes.iostate = IOSTATE_IMMEDIATE_RETURN; + + /* since we got an immediate return, we must signal the event object ourselves */ + ASSERT(SetEvent(tt->writes.overlapped.hEvent)); + + tt->writes.status = 0; + + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Write immediate return [%d,%d]", + BLEN(&tt->writes.buf), + (int) tt->writes.size); + } + else + { + err = GetLastError(); + if (err == ERROR_IO_PENDING) /* operation queued? */ + { + tt->writes.iostate = IOSTATE_QUEUED; + tt->writes.status = err; + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Write queued [%d]", + BLEN(&tt->writes.buf)); + } + else /* error occurred */ + { + struct gc_arena gc = gc_new(); + ASSERT(SetEvent(tt->writes.overlapped.hEvent)); + tt->writes.iostate = IOSTATE_IMMEDIATE_RETURN; + tt->writes.status = err; + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Write error [%d] : %s", + BLEN(&tt->writes.buf), + strerror_win32(err, &gc)); + gc_free(&gc); + } + } + } + return tt->writes.iostate; } int -tun_finalize ( - HANDLE h, - struct overlapped_io *io, - struct buffer *buf) -{ - int ret = -1; - BOOL status; - - switch (io->iostate) - { - case IOSTATE_QUEUED: - status = GetOverlappedResult( - h, - &io->overlapped, - &io->size, - FALSE - ); - if (status) - { - /* successful return for a queued operation */ - if (buf) - *buf = io->buf; - ret = io->size; - io->iostate = IOSTATE_INITIAL; - ASSERT (ResetEvent (io->overlapped.hEvent)); - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Completion success [%d]", ret); - } - else - { - /* error during a queued operation */ - ret = -1; - if (GetLastError() != ERROR_IO_INCOMPLETE) - { - /* if no error (i.e. just not finished yet), - then DON'T execute this code */ - io->iostate = IOSTATE_INITIAL; - ASSERT (ResetEvent (io->overlapped.hEvent)); - msg (D_WIN32_IO | M_ERRNO, "WIN32 I/O: TAP Completion error"); - } - } - break; - - case IOSTATE_IMMEDIATE_RETURN: - io->iostate = IOSTATE_INITIAL; - ASSERT (ResetEvent (io->overlapped.hEvent)); - if (io->status) - { - /* error return for a non-queued operation */ - SetLastError (io->status); - ret = -1; - msg (D_WIN32_IO | M_ERRNO, "WIN32 I/O: TAP Completion non-queued error"); - } - else - { - /* successful return for a non-queued operation */ - if (buf) - *buf = io->buf; - ret = io->size; - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Completion non-queued success [%d]", ret); - } - break; - - case IOSTATE_INITIAL: /* were we called without proper queueing? */ - SetLastError (ERROR_INVALID_FUNCTION); - ret = -1; - dmsg (D_WIN32_IO, "WIN32 I/O: TAP Completion BAD STATE"); - break; - - default: - ASSERT (0); - } - - if (buf) - buf->len = ret; - return ret; +tun_finalize( + HANDLE h, + struct overlapped_io *io, + struct buffer *buf) +{ + int ret = -1; + BOOL status; + + switch (io->iostate) + { + case IOSTATE_QUEUED: + status = GetOverlappedResult( + h, + &io->overlapped, + &io->size, + FALSE + ); + if (status) + { + /* successful return for a queued operation */ + if (buf) + { + *buf = io->buf; + } + ret = io->size; + io->iostate = IOSTATE_INITIAL; + ASSERT(ResetEvent(io->overlapped.hEvent)); + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Completion success [%d]", ret); + } + else + { + /* error during a queued operation */ + ret = -1; + if (GetLastError() != ERROR_IO_INCOMPLETE) + { + /* if no error (i.e. just not finished yet), + * then DON'T execute this code */ + io->iostate = IOSTATE_INITIAL; + ASSERT(ResetEvent(io->overlapped.hEvent)); + msg(D_WIN32_IO | M_ERRNO, "WIN32 I/O: TAP Completion error"); + } + } + break; + + case IOSTATE_IMMEDIATE_RETURN: + io->iostate = IOSTATE_INITIAL; + ASSERT(ResetEvent(io->overlapped.hEvent)); + if (io->status) + { + /* error return for a non-queued operation */ + SetLastError(io->status); + ret = -1; + msg(D_WIN32_IO | M_ERRNO, "WIN32 I/O: TAP Completion non-queued error"); + } + else + { + /* successful return for a non-queued operation */ + if (buf) + { + *buf = io->buf; + } + ret = io->size; + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Completion non-queued success [%d]", ret); + } + break; + + case IOSTATE_INITIAL: /* were we called without proper queueing? */ + SetLastError(ERROR_INVALID_FUNCTION); + ret = -1; + dmsg(D_WIN32_IO, "WIN32 I/O: TAP Completion BAD STATE"); + break; + + default: + ASSERT(0); + } + + if (buf) + { + buf->len = ret; + } + return ret; } const struct tap_reg * -get_tap_reg (struct gc_arena *gc) -{ - HKEY adapter_key; - LONG status; - DWORD len; - struct tap_reg *first = NULL; - struct tap_reg *last = NULL; - int i = 0; - - status = RegOpenKeyEx( - HKEY_LOCAL_MACHINE, - ADAPTER_KEY, - 0, - KEY_READ, - &adapter_key); - - if (status != ERROR_SUCCESS) - msg (M_FATAL, "Error opening registry key: %s", ADAPTER_KEY); - - while (true) - { - char enum_name[256]; - char unit_string[256]; - HKEY unit_key; - char component_id_string[] = "ComponentId"; - char component_id[256]; - char net_cfg_instance_id_string[] = "NetCfgInstanceId"; - char net_cfg_instance_id[256]; - DWORD data_type; - - len = sizeof (enum_name); - status = RegEnumKeyEx( - adapter_key, - i, - enum_name, - &len, - NULL, - NULL, - NULL, - NULL); - if (status == ERROR_NO_MORE_ITEMS) - break; - else if (status != ERROR_SUCCESS) - msg (M_FATAL, "Error enumerating registry subkeys of key: %s", - ADAPTER_KEY); - - openvpn_snprintf (unit_string, sizeof(unit_string), "%s\\%s", - ADAPTER_KEY, enum_name); - - status = RegOpenKeyEx( - HKEY_LOCAL_MACHINE, - unit_string, - 0, - KEY_READ, - &unit_key); - - if (status != ERROR_SUCCESS) - dmsg (D_REGISTRY, "Error opening registry key: %s", unit_string); - else - { - len = sizeof (component_id); - status = RegQueryValueEx( - unit_key, - component_id_string, - NULL, - &data_type, - component_id, - &len); - - if (status != ERROR_SUCCESS || data_type != REG_SZ) - dmsg (D_REGISTRY, "Error opening registry key: %s\\%s", - unit_string, component_id_string); - else - { - len = sizeof (net_cfg_instance_id); - status = RegQueryValueEx( - unit_key, - net_cfg_instance_id_string, - NULL, - &data_type, - net_cfg_instance_id, - &len); - - if (status == ERROR_SUCCESS && data_type == REG_SZ) - { - if (!strcmp (component_id, TAP_WIN_COMPONENT_ID)) - { - struct tap_reg *reg; - ALLOC_OBJ_CLEAR_GC (reg, struct tap_reg, gc); - reg->guid = string_alloc (net_cfg_instance_id, gc); - - /* link into return list */ - if (!first) - first = reg; - if (last) - last->next = reg; - last = reg; - } - } - } - RegCloseKey (unit_key); - } - ++i; - } - - RegCloseKey (adapter_key); - return first; +get_tap_reg(struct gc_arena *gc) +{ + HKEY adapter_key; + LONG status; + DWORD len; + struct tap_reg *first = NULL; + struct tap_reg *last = NULL; + int i = 0; + + status = RegOpenKeyEx( + HKEY_LOCAL_MACHINE, + ADAPTER_KEY, + 0, + KEY_READ, + &adapter_key); + + if (status != ERROR_SUCCESS) + { + msg(M_FATAL, "Error opening registry key: %s", ADAPTER_KEY); + } + + while (true) + { + char enum_name[256]; + char unit_string[256]; + HKEY unit_key; + char component_id_string[] = "ComponentId"; + char component_id[256]; + char net_cfg_instance_id_string[] = "NetCfgInstanceId"; + char net_cfg_instance_id[256]; + DWORD data_type; + + len = sizeof(enum_name); + status = RegEnumKeyEx( + adapter_key, + i, + enum_name, + &len, + NULL, + NULL, + NULL, + NULL); + if (status == ERROR_NO_MORE_ITEMS) + { + break; + } + else if (status != ERROR_SUCCESS) + { + msg(M_FATAL, "Error enumerating registry subkeys of key: %s", + ADAPTER_KEY); + } + + openvpn_snprintf(unit_string, sizeof(unit_string), "%s\\%s", + ADAPTER_KEY, enum_name); + + status = RegOpenKeyEx( + HKEY_LOCAL_MACHINE, + unit_string, + 0, + KEY_READ, + &unit_key); + + if (status != ERROR_SUCCESS) + { + dmsg(D_REGISTRY, "Error opening registry key: %s", unit_string); + } + else + { + len = sizeof(component_id); + status = RegQueryValueEx( + unit_key, + component_id_string, + NULL, + &data_type, + component_id, + &len); + + if (status != ERROR_SUCCESS || data_type != REG_SZ) + { + dmsg(D_REGISTRY, "Error opening registry key: %s\\%s", + unit_string, component_id_string); + } + else + { + len = sizeof(net_cfg_instance_id); + status = RegQueryValueEx( + unit_key, + net_cfg_instance_id_string, + NULL, + &data_type, + net_cfg_instance_id, + &len); + + if (status == ERROR_SUCCESS && data_type == REG_SZ) + { + if (!strcmp(component_id, TAP_WIN_COMPONENT_ID)) + { + struct tap_reg *reg; + ALLOC_OBJ_CLEAR_GC(reg, struct tap_reg, gc); + reg->guid = string_alloc(net_cfg_instance_id, gc); + + /* link into return list */ + if (!first) + { + first = reg; + } + if (last) + { + last->next = reg; + } + last = reg; + } + } + } + RegCloseKey(unit_key); + } + ++i; + } + + RegCloseKey(adapter_key); + return first; } const struct panel_reg * -get_panel_reg (struct gc_arena *gc) -{ - LONG status; - HKEY network_connections_key; - DWORD len; - struct panel_reg *first = NULL; - struct panel_reg *last = NULL; - int i = 0; - - status = RegOpenKeyEx( - HKEY_LOCAL_MACHINE, - NETWORK_CONNECTIONS_KEY, - 0, - KEY_READ, - &network_connections_key); - - if (status != ERROR_SUCCESS) - msg (M_FATAL, "Error opening registry key: %s", NETWORK_CONNECTIONS_KEY); - - while (true) - { - char enum_name[256]; - char connection_string[256]; - HKEY connection_key; - WCHAR name_data[256]; - DWORD name_type; - const WCHAR name_string[] = L"Name"; - - len = sizeof (enum_name); - status = RegEnumKeyEx( - network_connections_key, - i, - enum_name, - &len, - NULL, - NULL, - NULL, - NULL); - if (status == ERROR_NO_MORE_ITEMS) - break; - else if (status != ERROR_SUCCESS) - msg (M_FATAL, "Error enumerating registry subkeys of key: %s", - NETWORK_CONNECTIONS_KEY); - - openvpn_snprintf (connection_string, sizeof(connection_string), - "%s\\%s\\Connection", - NETWORK_CONNECTIONS_KEY, enum_name); - - status = RegOpenKeyEx( - HKEY_LOCAL_MACHINE, - connection_string, - 0, - KEY_READ, - &connection_key); - - if (status != ERROR_SUCCESS) - dmsg (D_REGISTRY, "Error opening registry key: %s", connection_string); - else - { - len = sizeof (name_data); - status = RegQueryValueExW( - connection_key, - name_string, - NULL, - &name_type, - (LPBYTE) name_data, - &len); - - if (status != ERROR_SUCCESS || name_type != REG_SZ) - dmsg (D_REGISTRY, "Error opening registry key: %s\\%s\\%s", - NETWORK_CONNECTIONS_KEY, connection_string, name_string); - else - { - int n; - LPSTR name; - struct panel_reg *reg; - - ALLOC_OBJ_CLEAR_GC (reg, struct panel_reg, gc); - n = WideCharToMultiByte (CP_UTF8, 0, name_data, -1, NULL, 0, NULL, NULL); - name = gc_malloc (n, false, gc); - WideCharToMultiByte (CP_UTF8, 0, name_data, -1, name, n, NULL, NULL); - reg->name = name; - reg->guid = string_alloc (enum_name, gc); - - /* link into return list */ - if (!first) - first = reg; - if (last) - last->next = reg; - last = reg; - } - RegCloseKey (connection_key); - } - ++i; - } - - RegCloseKey (network_connections_key); - - return first; +get_panel_reg(struct gc_arena *gc) +{ + LONG status; + HKEY network_connections_key; + DWORD len; + struct panel_reg *first = NULL; + struct panel_reg *last = NULL; + int i = 0; + + status = RegOpenKeyEx( + HKEY_LOCAL_MACHINE, + NETWORK_CONNECTIONS_KEY, + 0, + KEY_READ, + &network_connections_key); + + if (status != ERROR_SUCCESS) + { + msg(M_FATAL, "Error opening registry key: %s", NETWORK_CONNECTIONS_KEY); + } + + while (true) + { + char enum_name[256]; + char connection_string[256]; + HKEY connection_key; + WCHAR name_data[256]; + DWORD name_type; + const WCHAR name_string[] = L"Name"; + + len = sizeof(enum_name); + status = RegEnumKeyEx( + network_connections_key, + i, + enum_name, + &len, + NULL, + NULL, + NULL, + NULL); + if (status == ERROR_NO_MORE_ITEMS) + { + break; + } + else if (status != ERROR_SUCCESS) + { + msg(M_FATAL, "Error enumerating registry subkeys of key: %s", + NETWORK_CONNECTIONS_KEY); + } + + openvpn_snprintf(connection_string, sizeof(connection_string), + "%s\\%s\\Connection", + NETWORK_CONNECTIONS_KEY, enum_name); + + status = RegOpenKeyEx( + HKEY_LOCAL_MACHINE, + connection_string, + 0, + KEY_READ, + &connection_key); + + if (status != ERROR_SUCCESS) + { + dmsg(D_REGISTRY, "Error opening registry key: %s", connection_string); + } + else + { + len = sizeof(name_data); + status = RegQueryValueExW( + connection_key, + name_string, + NULL, + &name_type, + (LPBYTE) name_data, + &len); + + if (status != ERROR_SUCCESS || name_type != REG_SZ) + { + dmsg(D_REGISTRY, "Error opening registry key: %s\\%s\\%s", + NETWORK_CONNECTIONS_KEY, connection_string, name_string); + } + else + { + int n; + LPSTR name; + struct panel_reg *reg; + + ALLOC_OBJ_CLEAR_GC(reg, struct panel_reg, gc); + n = WideCharToMultiByte(CP_UTF8, 0, name_data, -1, NULL, 0, NULL, NULL); + name = gc_malloc(n, false, gc); + WideCharToMultiByte(CP_UTF8, 0, name_data, -1, name, n, NULL, NULL); + reg->name = name; + reg->guid = string_alloc(enum_name, gc); + + /* link into return list */ + if (!first) + { + first = reg; + } + if (last) + { + last->next = reg; + } + last = reg; + } + RegCloseKey(connection_key); + } + ++i; + } + + RegCloseKey(network_connections_key); + + return first; } /* * Check that two addresses are part of the same 255.255.255.252 subnet. */ void -verify_255_255_255_252 (in_addr_t local, in_addr_t remote) +verify_255_255_255_252(in_addr_t local, in_addr_t remote) { - struct gc_arena gc = gc_new (); - const unsigned int mask = 3; - const char *err = NULL; + struct gc_arena gc = gc_new(); + const unsigned int mask = 3; + const char *err = NULL; - if (local == remote) + if (local == remote) { - err = "must be different"; - goto error; + err = "must be different"; + goto error; } - if ((local & (~mask)) != (remote & (~mask))) + if ((local & (~mask)) != (remote & (~mask))) { - err = "must exist within the same 255.255.255.252 subnet. This is a limitation of --dev tun when used with the TAP-WIN32 driver"; - goto error; + err = "must exist within the same 255.255.255.252 subnet. This is a limitation of --dev tun when used with the TAP-WIN32 driver"; + goto error; } - if ((local & mask) == 0 - || (local & mask) == 3 - || (remote & mask) == 0 - || (remote & mask) == 3) + if ((local & mask) == 0 + || (local & mask) == 3 + || (remote & mask) == 0 + || (remote & mask) == 3) { - err = "cannot use the first or last address within a given 255.255.255.252 subnet. This is a limitation of --dev tun when used with the TAP-WIN32 driver"; - goto error; + err = "cannot use the first or last address within a given 255.255.255.252 subnet. This is a limitation of --dev tun when used with the TAP-WIN32 driver"; + goto error; } - gc_free (&gc); - return; + gc_free(&gc); + return; - error: - msg (M_FATAL, "There is a problem in your selection of --ifconfig endpoints [local=%s, remote=%s]. The local and remote VPN endpoints %s. Try '" PACKAGE " --show-valid-subnets' option for more info.", - print_in_addr_t (local, 0, &gc), - print_in_addr_t (remote, 0, &gc), - err); - gc_free (&gc); +error: + msg(M_FATAL, "There is a problem in your selection of --ifconfig endpoints [local=%s, remote=%s]. The local and remote VPN endpoints %s. Try '" PACKAGE " --show-valid-subnets' option for more info.", + print_in_addr_t(local, 0, &gc), + print_in_addr_t(remote, 0, &gc), + err); + gc_free(&gc); } -void show_valid_win32_tun_subnets (void) +void +show_valid_win32_tun_subnets(void) { - int i; - int col = 0; - - printf ("On Windows, point-to-point IP support (i.e. --dev tun)\n"); - printf ("is emulated by the TAP-Windows driver. The major limitation\n"); - printf ("imposed by this approach is that the --ifconfig local and\n"); - printf ("remote endpoints must be part of the same 255.255.255.252\n"); - printf ("subnet. The following list shows examples of endpoint\n"); - printf ("pairs which satisfy this requirement. Only the final\n"); - printf ("component of the IP address pairs is at issue.\n\n"); - printf ("As an example, the following option would be correct:\n"); - printf (" --ifconfig 10.7.0.5 10.7.0.6 (on host A)\n"); - printf (" --ifconfig 10.7.0.6 10.7.0.5 (on host B)\n"); - printf ("because [5,6] is part of the below list.\n\n"); - - for (i = 0; i < 256; i += 4) + int i; + int col = 0; + + printf("On Windows, point-to-point IP support (i.e. --dev tun)\n"); + printf("is emulated by the TAP-Windows driver. The major limitation\n"); + printf("imposed by this approach is that the --ifconfig local and\n"); + printf("remote endpoints must be part of the same 255.255.255.252\n"); + printf("subnet. The following list shows examples of endpoint\n"); + printf("pairs which satisfy this requirement. Only the final\n"); + printf("component of the IP address pairs is at issue.\n\n"); + printf("As an example, the following option would be correct:\n"); + printf(" --ifconfig 10.7.0.5 10.7.0.6 (on host A)\n"); + printf(" --ifconfig 10.7.0.6 10.7.0.5 (on host B)\n"); + printf("because [5,6] is part of the below list.\n\n"); + + for (i = 0; i < 256; i += 4) + { + printf("[%3d,%3d] ", i+1, i+2); + if (++col > 4) + { + col = 0; + printf("\n"); + } + } + if (col) { - printf("[%3d,%3d] ", i+1, i+2); - if (++col > 4) - { - col = 0; - printf ("\n"); - } + printf("\n"); } - if (col) - printf ("\n"); } void -show_tap_win_adapters (int msglev, int warnlev) +show_tap_win_adapters(int msglev, int warnlev) { - struct gc_arena gc = gc_new (); + struct gc_arena gc = gc_new(); - bool warn_panel_null = false; - bool warn_panel_dup = false; - bool warn_tap_dup = false; + bool warn_panel_null = false; + bool warn_panel_dup = false; + bool warn_tap_dup = false; - int links; + int links; - const struct tap_reg *tr; - const struct tap_reg *tr1; - const struct panel_reg *pr; + const struct tap_reg *tr; + const struct tap_reg *tr1; + const struct panel_reg *pr; - const struct tap_reg *tap_reg = get_tap_reg (&gc); - const struct panel_reg *panel_reg = get_panel_reg (&gc); + const struct tap_reg *tap_reg = get_tap_reg(&gc); + const struct panel_reg *panel_reg = get_panel_reg(&gc); - msg (msglev, "Available TAP-WIN32 adapters [name, GUID]:"); + msg(msglev, "Available TAP-WIN32 adapters [name, GUID]:"); - /* loop through each TAP-Windows adapter registry entry */ - for (tr = tap_reg; tr != NULL; tr = tr->next) + /* loop through each TAP-Windows adapter registry entry */ + for (tr = tap_reg; tr != NULL; tr = tr->next) { - links = 0; + links = 0; - /* loop through each network connections entry in the control panel */ - for (pr = panel_reg; pr != NULL; pr = pr->next) - { - if (!strcmp (tr->guid, pr->guid)) - { - msg (msglev, "'%s' %s", pr->name, tr->guid); - ++links; - } - } + /* loop through each network connections entry in the control panel */ + for (pr = panel_reg; pr != NULL; pr = pr->next) + { + if (!strcmp(tr->guid, pr->guid)) + { + msg(msglev, "'%s' %s", pr->name, tr->guid); + ++links; + } + } - if (links > 1) - { - warn_panel_dup = true; - } - else if (links == 0) - { - /* a TAP adapter exists without a link from the network - connections control panel */ - warn_panel_null = true; - msg (msglev, "[NULL] %s", tr->guid); - } + if (links > 1) + { + warn_panel_dup = true; + } + else if (links == 0) + { + /* a TAP adapter exists without a link from the network + * connections control panel */ + warn_panel_null = true; + msg(msglev, "[NULL] %s", tr->guid); + } } - /* check for TAP-Windows adapter duplicated GUIDs */ - for (tr = tap_reg; tr != NULL; tr = tr->next) + /* check for TAP-Windows adapter duplicated GUIDs */ + for (tr = tap_reg; tr != NULL; tr = tr->next) { - for (tr1 = tap_reg; tr1 != NULL; tr1 = tr1->next) - { - if (tr != tr1 && !strcmp (tr->guid, tr1->guid)) - warn_tap_dup = true; - } + for (tr1 = tap_reg; tr1 != NULL; tr1 = tr1->next) + { + if (tr != tr1 && !strcmp(tr->guid, tr1->guid)) + { + warn_tap_dup = true; + } + } } - /* warn on registry inconsistencies */ - if (warn_tap_dup) - msg (warnlev, "WARNING: Some TAP-Windows adapters have duplicate GUIDs"); + /* warn on registry inconsistencies */ + if (warn_tap_dup) + { + msg(warnlev, "WARNING: Some TAP-Windows adapters have duplicate GUIDs"); + } - if (warn_panel_dup) - msg (warnlev, "WARNING: Some TAP-Windows adapters have duplicate links from the Network Connections control panel"); + if (warn_panel_dup) + { + msg(warnlev, "WARNING: Some TAP-Windows adapters have duplicate links from the Network Connections control panel"); + } - if (warn_panel_null) - msg (warnlev, "WARNING: Some TAP-Windows adapters have no link from the Network Connections control panel"); + if (warn_panel_null) + { + msg(warnlev, "WARNING: Some TAP-Windows adapters have no link from the Network Connections control panel"); + } - gc_free (&gc); + gc_free(&gc); } /* * Confirm that GUID is a TAP-Windows adapter. */ static bool -is_tap_win (const char *guid, const struct tap_reg *tap_reg) +is_tap_win(const char *guid, const struct tap_reg *tap_reg) { - const struct tap_reg *tr; + const struct tap_reg *tr; - for (tr = tap_reg; tr != NULL; tr = tr->next) + for (tr = tap_reg; tr != NULL; tr = tr->next) { - if (guid && !strcmp (tr->guid, guid)) - return true; + if (guid && !strcmp(tr->guid, guid)) + { + return true; + } } - return false; + return false; } static const char * -guid_to_name (const char *guid, const struct panel_reg *panel_reg) +guid_to_name(const char *guid, const struct panel_reg *panel_reg) { - const struct panel_reg *pr; + const struct panel_reg *pr; - for (pr = panel_reg; pr != NULL; pr = pr->next) + for (pr = panel_reg; pr != NULL; pr = pr->next) { - if (guid && !strcmp (pr->guid, guid)) - return pr->name; + if (guid && !strcmp(pr->guid, guid)) + { + return pr->name; + } } - return NULL; + return NULL; } static const char * -name_to_guid (const char *name, const struct tap_reg *tap_reg, const struct panel_reg *panel_reg) +name_to_guid(const char *name, const struct tap_reg *tap_reg, const struct panel_reg *panel_reg) { - const struct panel_reg *pr; + const struct panel_reg *pr; - for (pr = panel_reg; pr != NULL; pr = pr->next) + for (pr = panel_reg; pr != NULL; pr = pr->next) { - if (name && !strcmp (pr->name, name) && is_tap_win (pr->guid, tap_reg)) - return pr->guid; + if (name && !strcmp(pr->name, name) && is_tap_win(pr->guid, tap_reg)) + { + return pr->guid; + } } - return NULL; + return NULL; } static void -at_least_one_tap_win (const struct tap_reg *tap_reg) +at_least_one_tap_win(const struct tap_reg *tap_reg) { - if (!tap_reg) - msg (M_FATAL, "There are no TAP-Windows adapters on this system. You should be able to create a TAP-Windows adapter by going to Start -> All Programs -> TAP-Windows -> Utilities -> Add a new TAP-Windows virtual ethernet adapter."); + if (!tap_reg) + { + msg(M_FATAL, "There are no TAP-Windows adapters on this system. You should be able to create a TAP-Windows adapter by going to Start -> All Programs -> TAP-Windows -> Utilities -> Add a new TAP-Windows virtual ethernet adapter."); + } } /* - * Get an adapter GUID and optional actual_name from the + * Get an adapter GUID and optional actual_name from the * registry for the TAP device # = device_number. */ static const char * -get_unspecified_device_guid (const int device_number, - char *actual_name, - int actual_name_size, - const struct tap_reg *tap_reg_src, - const struct panel_reg *panel_reg_src, - struct gc_arena *gc) -{ - const struct tap_reg *tap_reg = tap_reg_src; - struct buffer ret = clear_buf (); - struct buffer actual = clear_buf (); - int i; - - ASSERT (device_number >= 0); - - /* Make sure we have at least one TAP adapter */ - if (!tap_reg) - return NULL; +get_unspecified_device_guid(const int device_number, + char *actual_name, + int actual_name_size, + const struct tap_reg *tap_reg_src, + const struct panel_reg *panel_reg_src, + struct gc_arena *gc) +{ + const struct tap_reg *tap_reg = tap_reg_src; + struct buffer ret = clear_buf(); + struct buffer actual = clear_buf(); + int i; + + ASSERT(device_number >= 0); - /* The actual_name output buffer may be NULL */ - if (actual_name) + /* Make sure we have at least one TAP adapter */ + if (!tap_reg) { - ASSERT (actual_name_size > 0); - buf_set_write (&actual, actual_name, actual_name_size); + return NULL; } - /* Move on to specified device number */ - for (i = 0; i < device_number; i++) + /* The actual_name output buffer may be NULL */ + if (actual_name) { - tap_reg = tap_reg->next; - if (!tap_reg) - return NULL; + ASSERT(actual_name_size > 0); + buf_set_write(&actual, actual_name, actual_name_size); } - /* Save Network Panel name (if exists) in actual_name */ - if (actual_name) + /* Move on to specified device number */ + for (i = 0; i < device_number; i++) { - const char *act = guid_to_name (tap_reg->guid, panel_reg_src); - if (act) - buf_printf (&actual, "%s", act); - else - buf_printf (&actual, "%s", tap_reg->guid); + tap_reg = tap_reg->next; + if (!tap_reg) + { + return NULL; + } } - /* Save GUID for return value */ - ret = alloc_buf_gc (256, gc); - buf_printf (&ret, "%s", tap_reg->guid); - return BSTR (&ret); + /* Save Network Panel name (if exists) in actual_name */ + if (actual_name) + { + const char *act = guid_to_name(tap_reg->guid, panel_reg_src); + if (act) + { + buf_printf(&actual, "%s", act); + } + else + { + buf_printf(&actual, "%s", tap_reg->guid); + } + } + + /* Save GUID for return value */ + ret = alloc_buf_gc(256, gc); + buf_printf(&ret, "%s", tap_reg->guid); + return BSTR(&ret); } /* @@ -3773,158 +4100,172 @@ get_unspecified_device_guid (const int device_number, * returning the GUID and optional actual_name. */ static const char * -get_device_guid (const char *name, - char *actual_name, - int actual_name_size, - const struct tap_reg *tap_reg, - const struct panel_reg *panel_reg, - struct gc_arena *gc) -{ - struct buffer ret = alloc_buf_gc (256, gc); - struct buffer actual = clear_buf (); - - /* Make sure we have at least one TAP adapter */ - if (!tap_reg) - return NULL; +get_device_guid(const char *name, + char *actual_name, + int actual_name_size, + const struct tap_reg *tap_reg, + const struct panel_reg *panel_reg, + struct gc_arena *gc) +{ + struct buffer ret = alloc_buf_gc(256, gc); + struct buffer actual = clear_buf(); - /* The actual_name output buffer may be NULL */ - if (actual_name) + /* Make sure we have at least one TAP adapter */ + if (!tap_reg) { - ASSERT (actual_name_size > 0); - buf_set_write (&actual, actual_name, actual_name_size); + return NULL; } - /* Check if GUID was explicitly specified as --dev-node parameter */ - if (is_tap_win (name, tap_reg)) + /* The actual_name output buffer may be NULL */ + if (actual_name) { - const char *act = guid_to_name (name, panel_reg); - buf_printf (&ret, "%s", name); - if (act) - buf_printf (&actual, "%s", act); - else - buf_printf (&actual, "%s", name); - return BSTR (&ret); + ASSERT(actual_name_size > 0); + buf_set_write(&actual, actual_name, actual_name_size); } - /* Lookup TAP adapter in network connections list */ - { - const char *guid = name_to_guid (name, tap_reg, panel_reg); - if (guid) - { - buf_printf (&actual, "%s", name); - buf_printf (&ret, "%s", guid); - return BSTR (&ret); - } - } + /* Check if GUID was explicitly specified as --dev-node parameter */ + if (is_tap_win(name, tap_reg)) + { + const char *act = guid_to_name(name, panel_reg); + buf_printf(&ret, "%s", name); + if (act) + { + buf_printf(&actual, "%s", act); + } + else + { + buf_printf(&actual, "%s", name); + } + return BSTR(&ret); + } - return NULL; + /* Lookup TAP adapter in network connections list */ + { + const char *guid = name_to_guid(name, tap_reg, panel_reg); + if (guid) + { + buf_printf(&actual, "%s", name); + buf_printf(&ret, "%s", guid); + return BSTR(&ret); + } + } + + return NULL; } /* * Get adapter info list */ const IP_ADAPTER_INFO * -get_adapter_info_list (struct gc_arena *gc) +get_adapter_info_list(struct gc_arena *gc) { - ULONG size = 0; - IP_ADAPTER_INFO *pi = NULL; - DWORD status; + ULONG size = 0; + IP_ADAPTER_INFO *pi = NULL; + DWORD status; - if ((status = GetAdaptersInfo (NULL, &size)) != ERROR_BUFFER_OVERFLOW) + if ((status = GetAdaptersInfo(NULL, &size)) != ERROR_BUFFER_OVERFLOW) { - msg (M_INFO, "GetAdaptersInfo #1 failed (status=%u) : %s", - (unsigned int)status, - strerror_win32 (status, gc)); + msg(M_INFO, "GetAdaptersInfo #1 failed (status=%u) : %s", + (unsigned int)status, + strerror_win32(status, gc)); } - else + else { - pi = (PIP_ADAPTER_INFO) gc_malloc (size, false, gc); - if ((status = GetAdaptersInfo (pi, &size)) == NO_ERROR) - return pi; - else - { - msg (M_INFO, "GetAdaptersInfo #2 failed (status=%u) : %s", - (unsigned int)status, - strerror_win32 (status, gc)); - } + pi = (PIP_ADAPTER_INFO) gc_malloc(size, false, gc); + if ((status = GetAdaptersInfo(pi, &size)) == NO_ERROR) + { + return pi; + } + else + { + msg(M_INFO, "GetAdaptersInfo #2 failed (status=%u) : %s", + (unsigned int)status, + strerror_win32(status, gc)); + } } - return pi; + return pi; } const IP_PER_ADAPTER_INFO * -get_per_adapter_info (const DWORD index, struct gc_arena *gc) -{ - ULONG size = 0; - IP_PER_ADAPTER_INFO *pi = NULL; - DWORD status; - - if (index != TUN_ADAPTER_INDEX_INVALID) - { - if ((status = GetPerAdapterInfo (index, NULL, &size)) != ERROR_BUFFER_OVERFLOW) - { - msg (M_INFO, "GetPerAdapterInfo #1 failed (status=%u) : %s", - (unsigned int)status, - strerror_win32 (status, gc)); - } - else - { - pi = (PIP_PER_ADAPTER_INFO) gc_malloc (size, false, gc); - if ((status = GetPerAdapterInfo ((ULONG)index, pi, &size)) == ERROR_SUCCESS) - return pi; - else - { - msg (M_INFO, "GetPerAdapterInfo #2 failed (status=%u) : %s", - (unsigned int)status, - strerror_win32 (status, gc)); - } - } - } - return pi; +get_per_adapter_info(const DWORD index, struct gc_arena *gc) +{ + ULONG size = 0; + IP_PER_ADAPTER_INFO *pi = NULL; + DWORD status; + + if (index != TUN_ADAPTER_INDEX_INVALID) + { + if ((status = GetPerAdapterInfo(index, NULL, &size)) != ERROR_BUFFER_OVERFLOW) + { + msg(M_INFO, "GetPerAdapterInfo #1 failed (status=%u) : %s", + (unsigned int)status, + strerror_win32(status, gc)); + } + else + { + pi = (PIP_PER_ADAPTER_INFO) gc_malloc(size, false, gc); + if ((status = GetPerAdapterInfo((ULONG)index, pi, &size)) == ERROR_SUCCESS) + { + return pi; + } + else + { + msg(M_INFO, "GetPerAdapterInfo #2 failed (status=%u) : %s", + (unsigned int)status, + strerror_win32(status, gc)); + } + } + } + return pi; } static const IP_INTERFACE_INFO * -get_interface_info_list (struct gc_arena *gc) +get_interface_info_list(struct gc_arena *gc) { - ULONG size = 0; - IP_INTERFACE_INFO *ii = NULL; - DWORD status; + ULONG size = 0; + IP_INTERFACE_INFO *ii = NULL; + DWORD status; - if ((status = GetInterfaceInfo (NULL, &size)) != ERROR_INSUFFICIENT_BUFFER) + if ((status = GetInterfaceInfo(NULL, &size)) != ERROR_INSUFFICIENT_BUFFER) { - msg (M_INFO, "GetInterfaceInfo #1 failed (status=%u) : %s", - (unsigned int)status, - strerror_win32 (status, gc)); + msg(M_INFO, "GetInterfaceInfo #1 failed (status=%u) : %s", + (unsigned int)status, + strerror_win32(status, gc)); } - else + else { - ii = (PIP_INTERFACE_INFO) gc_malloc (size, false, gc); - if ((status = GetInterfaceInfo (ii, &size)) == NO_ERROR) - return ii; - else - { - msg (M_INFO, "GetInterfaceInfo #2 failed (status=%u) : %s", - (unsigned int)status, - strerror_win32 (status, gc)); - } + ii = (PIP_INTERFACE_INFO) gc_malloc(size, false, gc); + if ((status = GetInterfaceInfo(ii, &size)) == NO_ERROR) + { + return ii; + } + else + { + msg(M_INFO, "GetInterfaceInfo #2 failed (status=%u) : %s", + (unsigned int)status, + strerror_win32(status, gc)); + } } - return ii; + return ii; } static const IP_ADAPTER_INDEX_MAP * -get_interface_info (DWORD index, struct gc_arena *gc) +get_interface_info(DWORD index, struct gc_arena *gc) { - const IP_INTERFACE_INFO *list = get_interface_info_list (gc); - if (list) + const IP_INTERFACE_INFO *list = get_interface_info_list(gc); + if (list) { - int i; - for (i = 0; i < list->NumAdapters; ++i) - { - const IP_ADAPTER_INDEX_MAP *inter = &list->Adapter[i]; - if (index == inter->Index) - return inter; - } + int i; + for (i = 0; i < list->NumAdapters; ++i) + { + const IP_ADAPTER_INDEX_MAP *inter = &list->Adapter[i]; + if (index == inter->Index) + { + return inter; + } + } } - return NULL; + return NULL; } /* @@ -3933,229 +4274,261 @@ get_interface_info (DWORD index, struct gc_arena *gc) */ const IP_ADAPTER_INFO * -get_adapter (const IP_ADAPTER_INFO *ai, DWORD index) +get_adapter(const IP_ADAPTER_INFO *ai, DWORD index) { - if (ai && index != TUN_ADAPTER_INDEX_INVALID) + if (ai && index != TUN_ADAPTER_INDEX_INVALID) { - const IP_ADAPTER_INFO *a; + const IP_ADAPTER_INFO *a; - /* find index in the linked list */ - for (a = ai; a != NULL; a = a->Next) - { - if (a->Index == index) - return a; - } + /* find index in the linked list */ + for (a = ai; a != NULL; a = a->Next) + { + if (a->Index == index) + { + return a; + } + } } - return NULL; + return NULL; } const IP_ADAPTER_INFO * -get_adapter_info (DWORD index, struct gc_arena *gc) +get_adapter_info(DWORD index, struct gc_arena *gc) { - return get_adapter (get_adapter_info_list (gc), index); + return get_adapter(get_adapter_info_list(gc), index); } static int -get_adapter_n_ip_netmask (const IP_ADAPTER_INFO *ai) +get_adapter_n_ip_netmask(const IP_ADAPTER_INFO *ai) { - if (ai) + if (ai) { - int n = 0; - const IP_ADDR_STRING *ip = &ai->IpAddressList; + int n = 0; + const IP_ADDR_STRING *ip = &ai->IpAddressList; - while (ip) - { - ++n; - ip = ip->Next; - } - return n; + while (ip) + { + ++n; + ip = ip->Next; + } + return n; + } + else + { + return 0; } - else - return 0; } static bool -get_adapter_ip_netmask (const IP_ADAPTER_INFO *ai, const int n, in_addr_t *ip, in_addr_t *netmask) +get_adapter_ip_netmask(const IP_ADAPTER_INFO *ai, const int n, in_addr_t *ip, in_addr_t *netmask) { - bool ret = false; - *ip = 0; - *netmask = 0; + bool ret = false; + *ip = 0; + *netmask = 0; - if (ai) + if (ai) { - const IP_ADDR_STRING *iplist = &ai->IpAddressList; - int i = 0; + const IP_ADDR_STRING *iplist = &ai->IpAddressList; + int i = 0; - while (iplist) - { - if (i == n) - break; - ++i; - iplist = iplist->Next; - } + while (iplist) + { + if (i == n) + { + break; + } + ++i; + iplist = iplist->Next; + } - if (iplist) - { - const unsigned int getaddr_flags = GETADDR_HOST_ORDER; - const char *ip_str = iplist->IpAddress.String; - const char *netmask_str = iplist->IpMask.String; - bool succeed1 = false; - bool succeed2 = false; + if (iplist) + { + const unsigned int getaddr_flags = GETADDR_HOST_ORDER; + const char *ip_str = iplist->IpAddress.String; + const char *netmask_str = iplist->IpMask.String; + bool succeed1 = false; + bool succeed2 = false; - if (ip_str && netmask_str && strlen (ip_str) && strlen (netmask_str)) - { - *ip = getaddr (getaddr_flags, ip_str, 0, &succeed1, NULL); - *netmask = getaddr (getaddr_flags, netmask_str, 0, &succeed2, NULL); - ret = (succeed1 == true && succeed2 == true); - } - } + if (ip_str && netmask_str && strlen(ip_str) && strlen(netmask_str)) + { + *ip = getaddr(getaddr_flags, ip_str, 0, &succeed1, NULL); + *netmask = getaddr(getaddr_flags, netmask_str, 0, &succeed2, NULL); + ret = (succeed1 == true && succeed2 == true); + } + } } - return ret; + return ret; } static bool -test_adapter_ip_netmask (const IP_ADAPTER_INFO *ai, const in_addr_t ip, const in_addr_t netmask) +test_adapter_ip_netmask(const IP_ADAPTER_INFO *ai, const in_addr_t ip, const in_addr_t netmask) { - if (ai) + if (ai) { - in_addr_t ip_adapter = 0; - in_addr_t netmask_adapter = 0; - const bool status = get_adapter_ip_netmask (ai, 0, &ip_adapter, &netmask_adapter); - return (status && ip_adapter == ip && netmask_adapter == netmask); + in_addr_t ip_adapter = 0; + in_addr_t netmask_adapter = 0; + const bool status = get_adapter_ip_netmask(ai, 0, &ip_adapter, &netmask_adapter); + return (status && ip_adapter == ip && netmask_adapter == netmask); + } + else + { + return false; } - else - return false; } const IP_ADAPTER_INFO * -get_tun_adapter (const struct tuntap *tt, const IP_ADAPTER_INFO *list) +get_tun_adapter(const struct tuntap *tt, const IP_ADAPTER_INFO *list) { - if (list && tt) - return get_adapter (list, tt->adapter_index); - else - return NULL; + if (list && tt) + { + return get_adapter(list, tt->adapter_index); + } + else + { + return NULL; + } } bool -is_adapter_up (const struct tuntap *tt, const IP_ADAPTER_INFO *list) +is_adapter_up(const struct tuntap *tt, const IP_ADAPTER_INFO *list) { - int i; - bool ret = false; + int i; + bool ret = false; - const IP_ADAPTER_INFO *ai = get_tun_adapter (tt, list); + const IP_ADAPTER_INFO *ai = get_tun_adapter(tt, list); - if (ai) + if (ai) { - const int n = get_adapter_n_ip_netmask (ai); + const int n = get_adapter_n_ip_netmask(ai); - /* loop once for every IP/netmask assigned to adapter */ - for (i = 0; i < n; ++i) - { - in_addr_t ip, netmask; - if (get_adapter_ip_netmask (ai, i, &ip, &netmask)) - { - if (tt->local && tt->adapter_netmask) - { - /* wait for our --ifconfig parms to match the actual adapter parms */ - if (tt->local == ip && tt->adapter_netmask == netmask) - ret = true; - } - else - { - /* --ifconfig was not defined, maybe using a real DHCP server */ - if (ip && netmask) - ret = true; - } - } - } + /* loop once for every IP/netmask assigned to adapter */ + for (i = 0; i < n; ++i) + { + in_addr_t ip, netmask; + if (get_adapter_ip_netmask(ai, i, &ip, &netmask)) + { + if (tt->local && tt->adapter_netmask) + { + /* wait for our --ifconfig parms to match the actual adapter parms */ + if (tt->local == ip && tt->adapter_netmask == netmask) + { + ret = true; + } + } + else + { + /* --ifconfig was not defined, maybe using a real DHCP server */ + if (ip && netmask) + { + ret = true; + } + } + } + } } - else - ret = true; /* this can occur when TAP adapter is bridged */ + else + { + ret = true; /* this can occur when TAP adapter is bridged */ - return ret; + } + return ret; } bool -is_ip_in_adapter_subnet (const IP_ADAPTER_INFO *ai, const in_addr_t ip, in_addr_t *highest_netmask) +is_ip_in_adapter_subnet(const IP_ADAPTER_INFO *ai, const in_addr_t ip, in_addr_t *highest_netmask) { - int i; - bool ret = false; + int i; + bool ret = false; - if (highest_netmask) - *highest_netmask = 0; + if (highest_netmask) + { + *highest_netmask = 0; + } - if (ai) + if (ai) { - const int n = get_adapter_n_ip_netmask (ai); - for (i = 0; i < n; ++i) - { - in_addr_t adapter_ip, adapter_netmask; - if (get_adapter_ip_netmask (ai, i, &adapter_ip, &adapter_netmask)) - { - if (adapter_ip && adapter_netmask && (ip & adapter_netmask) == (adapter_ip & adapter_netmask)) - { - if (highest_netmask && adapter_netmask > *highest_netmask) - *highest_netmask = adapter_netmask; - ret = true; - } - } - } + const int n = get_adapter_n_ip_netmask(ai); + for (i = 0; i < n; ++i) + { + in_addr_t adapter_ip, adapter_netmask; + if (get_adapter_ip_netmask(ai, i, &adapter_ip, &adapter_netmask)) + { + if (adapter_ip && adapter_netmask && (ip & adapter_netmask) == (adapter_ip & adapter_netmask)) + { + if (highest_netmask && adapter_netmask > *highest_netmask) + { + *highest_netmask = adapter_netmask; + } + ret = true; + } + } + } } - return ret; + return ret; } DWORD -adapter_index_of_ip (const IP_ADAPTER_INFO *list, - const in_addr_t ip, - int *count, - in_addr_t *netmask) -{ - struct gc_arena gc = gc_new (); - DWORD ret = TUN_ADAPTER_INDEX_INVALID; - in_addr_t highest_netmask = 0; - bool first = true; - - if (count) - *count = 0; - - while (list) - { - in_addr_t hn; - - if (is_ip_in_adapter_subnet (list, ip, &hn)) - { - if (first || hn > highest_netmask) - { - highest_netmask = hn; - if (count) - *count = 1; - ret = list->Index; - first = false; - } - else if (hn == highest_netmask) - { - if (count) - ++*count; - } - } - list = list->Next; - } - - dmsg (D_ROUTE_DEBUG, "DEBUG: IP Locate: ip=%s nm=%s index=%d count=%d", - print_in_addr_t (ip, 0, &gc), - print_in_addr_t (highest_netmask, 0, &gc), - (int)ret, - count ? *count : -1); - - if (ret == TUN_ADAPTER_INDEX_INVALID && count) - *count = 0; - - if (netmask) - *netmask = highest_netmask; - - gc_free (&gc); - return ret; +adapter_index_of_ip(const IP_ADAPTER_INFO *list, + const in_addr_t ip, + int *count, + in_addr_t *netmask) +{ + struct gc_arena gc = gc_new(); + DWORD ret = TUN_ADAPTER_INDEX_INVALID; + in_addr_t highest_netmask = 0; + bool first = true; + + if (count) + { + *count = 0; + } + + while (list) + { + in_addr_t hn; + + if (is_ip_in_adapter_subnet(list, ip, &hn)) + { + if (first || hn > highest_netmask) + { + highest_netmask = hn; + if (count) + { + *count = 1; + } + ret = list->Index; + first = false; + } + else if (hn == highest_netmask) + { + if (count) + { + ++*count; + } + } + } + list = list->Next; + } + + dmsg(D_ROUTE_DEBUG, "DEBUG: IP Locate: ip=%s nm=%s index=%d count=%d", + print_in_addr_t(ip, 0, &gc), + print_in_addr_t(highest_netmask, 0, &gc), + (int)ret, + count ? *count : -1); + + if (ret == TUN_ADAPTER_INDEX_INVALID && count) + { + *count = 0; + } + + if (netmask) + { + *netmask = highest_netmask; + } + + gc_free(&gc); + return ret; } /* @@ -4168,24 +4541,28 @@ adapter_index_of_ip (const IP_ADAPTER_INFO *list, #define DHCP_STATUS_DISABLED 2 static int -dhcp_status (DWORD index) +dhcp_status(DWORD index) { - struct gc_arena gc = gc_new (); - int ret = DHCP_STATUS_UNDEF; - if (index != TUN_ADAPTER_INDEX_INVALID) + struct gc_arena gc = gc_new(); + int ret = DHCP_STATUS_UNDEF; + if (index != TUN_ADAPTER_INDEX_INVALID) { - const IP_ADAPTER_INFO *ai = get_adapter_info (index, &gc); + const IP_ADAPTER_INFO *ai = get_adapter_info(index, &gc); - if (ai) - { - if (ai->DhcpEnabled) - ret = DHCP_STATUS_ENABLED; - else - ret = DHCP_STATUS_DISABLED; - } + if (ai) + { + if (ai->DhcpEnabled) + { + ret = DHCP_STATUS_ENABLED; + } + else + { + ret = DHCP_STATUS_DISABLED; + } + } } - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } /* @@ -4193,191 +4570,207 @@ dhcp_status (DWORD index) * to adapter (given by index) by previous calls to AddIPAddress. */ static void -delete_temp_addresses (DWORD index) -{ - struct gc_arena gc = gc_new (); - const IP_ADAPTER_INFO *a = get_adapter_info (index, &gc); - - if (a) - { - const IP_ADDR_STRING *ip = &a->IpAddressList; - while (ip) - { - DWORD status; - const DWORD context = ip->Context; - - if ((status = DeleteIPAddress ((ULONG) context)) == NO_ERROR) - { - msg (M_INFO, "Successfully deleted previously set dynamic IP/netmask: %s/%s", - ip->IpAddress.String, - ip->IpMask.String); - } - else - { - const char *empty = "0.0.0.0"; - if (strcmp (ip->IpAddress.String, empty) - || strcmp (ip->IpMask.String, empty)) - msg (M_INFO, "NOTE: could not delete previously set dynamic IP/netmask: %s/%s (status=%u)", - ip->IpAddress.String, - ip->IpMask.String, - (unsigned int)status); - } - ip = ip->Next; - } - } - gc_free (&gc); +delete_temp_addresses(DWORD index) +{ + struct gc_arena gc = gc_new(); + const IP_ADAPTER_INFO *a = get_adapter_info(index, &gc); + + if (a) + { + const IP_ADDR_STRING *ip = &a->IpAddressList; + while (ip) + { + DWORD status; + const DWORD context = ip->Context; + + if ((status = DeleteIPAddress((ULONG) context)) == NO_ERROR) + { + msg(M_INFO, "Successfully deleted previously set dynamic IP/netmask: %s/%s", + ip->IpAddress.String, + ip->IpMask.String); + } + else + { + const char *empty = "0.0.0.0"; + if (strcmp(ip->IpAddress.String, empty) + || strcmp(ip->IpMask.String, empty)) + { + msg(M_INFO, "NOTE: could not delete previously set dynamic IP/netmask: %s/%s (status=%u)", + ip->IpAddress.String, + ip->IpMask.String, + (unsigned int)status); + } + } + ip = ip->Next; + } + } + gc_free(&gc); } /* * Get interface index for use with IP Helper API functions. */ static DWORD -get_adapter_index_method_1 (const char *guid) +get_adapter_index_method_1(const char *guid) { - DWORD index; - ULONG aindex; - wchar_t wbuf[256]; - _snwprintf (wbuf, SIZE (wbuf), L"\\DEVICE\\TCPIP_%S", guid); - wbuf [SIZE(wbuf) - 1] = 0; - if (GetAdapterIndex (wbuf, &aindex) != NO_ERROR) - index = TUN_ADAPTER_INDEX_INVALID; - else - index = (DWORD)aindex; - return index; + DWORD index; + ULONG aindex; + wchar_t wbuf[256]; + _snwprintf(wbuf, SIZE(wbuf), L"\\DEVICE\\TCPIP_%S", guid); + wbuf [SIZE(wbuf) - 1] = 0; + if (GetAdapterIndex(wbuf, &aindex) != NO_ERROR) + { + index = TUN_ADAPTER_INDEX_INVALID; + } + else + { + index = (DWORD)aindex; + } + return index; } static DWORD -get_adapter_index_method_2 (const char *guid) +get_adapter_index_method_2(const char *guid) { - struct gc_arena gc = gc_new (); - DWORD index = TUN_ADAPTER_INDEX_INVALID; + struct gc_arena gc = gc_new(); + DWORD index = TUN_ADAPTER_INDEX_INVALID; - const IP_ADAPTER_INFO *list = get_adapter_info_list (&gc); + const IP_ADAPTER_INFO *list = get_adapter_info_list(&gc); - while (list) + while (list) { - if (!strcmp (guid, list->AdapterName)) - { - index = list->Index; - break; - } - list = list->Next; + if (!strcmp(guid, list->AdapterName)) + { + index = list->Index; + break; + } + list = list->Next; } - gc_free (&gc); - return index; + gc_free(&gc); + return index; } static DWORD -get_adapter_index (const char *guid) +get_adapter_index(const char *guid) { - DWORD index; - index = get_adapter_index_method_1 (guid); - if (index == TUN_ADAPTER_INDEX_INVALID) - index = get_adapter_index_method_2 (guid); - if (index == TUN_ADAPTER_INDEX_INVALID) - msg (M_INFO, "NOTE: could not get adapter index for %s", guid); - return index; + DWORD index; + index = get_adapter_index_method_1(guid); + if (index == TUN_ADAPTER_INDEX_INVALID) + { + index = get_adapter_index_method_2(guid); + } + if (index == TUN_ADAPTER_INDEX_INVALID) + { + msg(M_INFO, "NOTE: could not get adapter index for %s", guid); + } + return index; } static DWORD -get_adapter_index_flexible (const char *name) /* actual name or GUID */ +get_adapter_index_flexible(const char *name) /* actual name or GUID */ { - struct gc_arena gc = gc_new (); - DWORD index; - index = get_adapter_index_method_1 (name); - if (index == TUN_ADAPTER_INDEX_INVALID) - index = get_adapter_index_method_2 (name); - if (index == TUN_ADAPTER_INDEX_INVALID) + struct gc_arena gc = gc_new(); + DWORD index; + index = get_adapter_index_method_1(name); + if (index == TUN_ADAPTER_INDEX_INVALID) { - const struct tap_reg *tap_reg = get_tap_reg (&gc); - const struct panel_reg *panel_reg = get_panel_reg (&gc); - const char *guid = name_to_guid (name, tap_reg, panel_reg); - index = get_adapter_index_method_1 (guid); - if (index == TUN_ADAPTER_INDEX_INVALID) - index = get_adapter_index_method_2 (guid); + index = get_adapter_index_method_2(name); } - if (index == TUN_ADAPTER_INDEX_INVALID) - msg (M_INFO, "NOTE: could not get adapter index for name/GUID '%s'", name); - gc_free (&gc); - return index; + if (index == TUN_ADAPTER_INDEX_INVALID) + { + const struct tap_reg *tap_reg = get_tap_reg(&gc); + const struct panel_reg *panel_reg = get_panel_reg(&gc); + const char *guid = name_to_guid(name, tap_reg, panel_reg); + index = get_adapter_index_method_1(guid); + if (index == TUN_ADAPTER_INDEX_INVALID) + { + index = get_adapter_index_method_2(guid); + } + } + if (index == TUN_ADAPTER_INDEX_INVALID) + { + msg(M_INFO, "NOTE: could not get adapter index for name/GUID '%s'", name); + } + gc_free(&gc); + return index; } /* * Return a string representing a PIP_ADDR_STRING */ static const char * -format_ip_addr_string (const IP_ADDR_STRING *ip, struct gc_arena *gc) +format_ip_addr_string(const IP_ADDR_STRING *ip, struct gc_arena *gc) { - struct buffer out = alloc_buf_gc (256, gc); - while (ip) + struct buffer out = alloc_buf_gc(256, gc); + while (ip) { - buf_printf (&out, "%s", ip->IpAddress.String); - if (strlen (ip->IpMask.String)) - { - buf_printf (&out, "/"); - buf_printf (&out, "%s", ip->IpMask.String); - } - buf_printf (&out, " "); - ip = ip->Next; + buf_printf(&out, "%s", ip->IpAddress.String); + if (strlen(ip->IpMask.String)) + { + buf_printf(&out, "/"); + buf_printf(&out, "%s", ip->IpMask.String); + } + buf_printf(&out, " "); + ip = ip->Next; } - return BSTR (&out); + return BSTR(&out); } /* * Show info for a single adapter */ static void -show_adapter (int msglev, const IP_ADAPTER_INFO *a, struct gc_arena *gc) +show_adapter(int msglev, const IP_ADAPTER_INFO *a, struct gc_arena *gc) { - msg (msglev, "%s", a->Description); - msg (msglev, " Index = %d", (int)a->Index); - msg (msglev, " GUID = %s", a->AdapterName); - msg (msglev, " IP = %s", format_ip_addr_string (&a->IpAddressList, gc)); - msg (msglev, " MAC = %s", format_hex_ex (a->Address, a->AddressLength, 0, 1, ":", gc)); - msg (msglev, " GATEWAY = %s", format_ip_addr_string (&a->GatewayList, gc)); - if (a->DhcpEnabled) + msg(msglev, "%s", a->Description); + msg(msglev, " Index = %d", (int)a->Index); + msg(msglev, " GUID = %s", a->AdapterName); + msg(msglev, " IP = %s", format_ip_addr_string(&a->IpAddressList, gc)); + msg(msglev, " MAC = %s", format_hex_ex(a->Address, a->AddressLength, 0, 1, ":", gc)); + msg(msglev, " GATEWAY = %s", format_ip_addr_string(&a->GatewayList, gc)); + if (a->DhcpEnabled) { - msg (msglev, " DHCP SERV = %s", format_ip_addr_string (&a->DhcpServer, gc)); - msg (msglev, " DHCP LEASE OBTAINED = %s", time_string (a->LeaseObtained, 0, false, gc)); - msg (msglev, " DHCP LEASE EXPIRES = %s", time_string (a->LeaseExpires, 0, false, gc)); + msg(msglev, " DHCP SERV = %s", format_ip_addr_string(&a->DhcpServer, gc)); + msg(msglev, " DHCP LEASE OBTAINED = %s", time_string(a->LeaseObtained, 0, false, gc)); + msg(msglev, " DHCP LEASE EXPIRES = %s", time_string(a->LeaseExpires, 0, false, gc)); } - if (a->HaveWins) + if (a->HaveWins) { - msg (msglev, " PRI WINS = %s", format_ip_addr_string (&a->PrimaryWinsServer, gc)); - msg (msglev, " SEC WINS = %s", format_ip_addr_string (&a->SecondaryWinsServer, gc)); + msg(msglev, " PRI WINS = %s", format_ip_addr_string(&a->PrimaryWinsServer, gc)); + msg(msglev, " SEC WINS = %s", format_ip_addr_string(&a->SecondaryWinsServer, gc)); } - { - const IP_PER_ADAPTER_INFO *pai = get_per_adapter_info (a->Index, gc); - if (pai) - { - msg (msglev, " DNS SERV = %s", format_ip_addr_string (&pai->DnsServerList, gc)); - } - } + { + const IP_PER_ADAPTER_INFO *pai = get_per_adapter_info(a->Index, gc); + if (pai) + { + msg(msglev, " DNS SERV = %s", format_ip_addr_string(&pai->DnsServerList, gc)); + } + } } /* * Show current adapter list */ void -show_adapters (int msglev) +show_adapters(int msglev) { - struct gc_arena gc = gc_new (); - const IP_ADAPTER_INFO *ai = get_adapter_info_list (&gc); + struct gc_arena gc = gc_new(); + const IP_ADAPTER_INFO *ai = get_adapter_info_list(&gc); - msg (msglev, "SYSTEM ADAPTER LIST"); - if (ai) + msg(msglev, "SYSTEM ADAPTER LIST"); + if (ai) { - const IP_ADAPTER_INFO *a; + const IP_ADAPTER_INFO *a; - /* find index in the linked list */ - for (a = ai; a != NULL; a = a->Next) - { - show_adapter (msglev, a, &gc); - } + /* find index in the linked list */ + for (a = ai; a != NULL; a = a->Next) + { + show_adapter(msglev, a, &gc); + } } - gc_free (&gc); + gc_free(&gc); } /* @@ -4388,113 +4781,123 @@ show_adapters (int msglev) */ static void -tap_allow_nonadmin_access_handle (const char *device_path, HANDLE hand) +tap_allow_nonadmin_access_handle(const char *device_path, HANDLE hand) { - struct security_attributes sa; - BOOL status; + struct security_attributes sa; + BOOL status; - if (!init_security_attributes_allow_all (&sa)) - msg (M_ERR, "Error: init SA failed"); + if (!init_security_attributes_allow_all(&sa)) + { + msg(M_ERR, "Error: init SA failed"); + } - status = SetKernelObjectSecurity (hand, DACL_SECURITY_INFORMATION, &sa.sd); - if (!status) + status = SetKernelObjectSecurity(hand, DACL_SECURITY_INFORMATION, &sa.sd); + if (!status) { - msg (M_ERRNO, "Error: SetKernelObjectSecurity failed on %s", device_path); + msg(M_ERRNO, "Error: SetKernelObjectSecurity failed on %s", device_path); } - else + else { - msg (M_INFO|M_NOPREFIX, "TAP-Windows device: %s [Non-admin access allowed]", device_path); + msg(M_INFO|M_NOPREFIX, "TAP-Windows device: %s [Non-admin access allowed]", device_path); } } void -tap_allow_nonadmin_access (const char *dev_node) -{ - struct gc_arena gc = gc_new (); - const struct tap_reg *tap_reg = get_tap_reg (&gc); - const struct panel_reg *panel_reg = get_panel_reg (&gc); - const char *device_guid = NULL; - HANDLE hand; - char actual_buffer[256]; - char device_path[256]; - - at_least_one_tap_win (tap_reg); - - if (dev_node) - { - /* Get the device GUID for the device specified with --dev-node. */ - device_guid = get_device_guid (dev_node, actual_buffer, sizeof (actual_buffer), tap_reg, panel_reg, &gc); - - if (!device_guid) - msg (M_FATAL, "TAP-Windows adapter '%s' not found", dev_node); - - /* Open Windows TAP-Windows adapter */ - openvpn_snprintf (device_path, sizeof(device_path), "%s%s%s", - USERMODEDEVICEDIR, - device_guid, - TAP_WIN_SUFFIX); - - hand = CreateFile ( - device_path, - MAXIMUM_ALLOWED, - 0, /* was: FILE_SHARE_READ */ - 0, - OPEN_EXISTING, - FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, - 0 - ); - - if (hand == INVALID_HANDLE_VALUE) - msg (M_ERR, "CreateFile failed on TAP device: %s", device_path); - - tap_allow_nonadmin_access_handle (device_path, hand); - CloseHandle (hand); - } - else - { - int device_number = 0; - - /* Try opening all TAP devices */ - while (true) - { - device_guid = get_unspecified_device_guid (device_number, - actual_buffer, - sizeof (actual_buffer), - tap_reg, - panel_reg, - &gc); - - if (!device_guid) - break; - - /* Open Windows TAP-Windows adapter */ - openvpn_snprintf (device_path, sizeof(device_path), "%s%s%s", - USERMODEDEVICEDIR, - device_guid, - TAP_WIN_SUFFIX); - - hand = CreateFile ( - device_path, - MAXIMUM_ALLOWED, - 0, /* was: FILE_SHARE_READ */ - 0, - OPEN_EXISTING, - FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, - 0 - ); - - if (hand == INVALID_HANDLE_VALUE) - msg (M_WARN, "CreateFile failed on TAP device: %s", device_path); - else - { - tap_allow_nonadmin_access_handle (device_path, hand); - CloseHandle (hand); - } - - device_number++; - } - } - gc_free (&gc); +tap_allow_nonadmin_access(const char *dev_node) +{ + struct gc_arena gc = gc_new(); + const struct tap_reg *tap_reg = get_tap_reg(&gc); + const struct panel_reg *panel_reg = get_panel_reg(&gc); + const char *device_guid = NULL; + HANDLE hand; + char actual_buffer[256]; + char device_path[256]; + + at_least_one_tap_win(tap_reg); + + if (dev_node) + { + /* Get the device GUID for the device specified with --dev-node. */ + device_guid = get_device_guid(dev_node, actual_buffer, sizeof(actual_buffer), tap_reg, panel_reg, &gc); + + if (!device_guid) + { + msg(M_FATAL, "TAP-Windows adapter '%s' not found", dev_node); + } + + /* Open Windows TAP-Windows adapter */ + openvpn_snprintf(device_path, sizeof(device_path), "%s%s%s", + USERMODEDEVICEDIR, + device_guid, + TAP_WIN_SUFFIX); + + hand = CreateFile( + device_path, + MAXIMUM_ALLOWED, + 0, /* was: FILE_SHARE_READ */ + 0, + OPEN_EXISTING, + FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, + 0 + ); + + if (hand == INVALID_HANDLE_VALUE) + { + msg(M_ERR, "CreateFile failed on TAP device: %s", device_path); + } + + tap_allow_nonadmin_access_handle(device_path, hand); + CloseHandle(hand); + } + else + { + int device_number = 0; + + /* Try opening all TAP devices */ + while (true) + { + device_guid = get_unspecified_device_guid(device_number, + actual_buffer, + sizeof(actual_buffer), + tap_reg, + panel_reg, + &gc); + + if (!device_guid) + { + break; + } + + /* Open Windows TAP-Windows adapter */ + openvpn_snprintf(device_path, sizeof(device_path), "%s%s%s", + USERMODEDEVICEDIR, + device_guid, + TAP_WIN_SUFFIX); + + hand = CreateFile( + device_path, + MAXIMUM_ALLOWED, + 0, /* was: FILE_SHARE_READ */ + 0, + OPEN_EXISTING, + FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, + 0 + ); + + if (hand == INVALID_HANDLE_VALUE) + { + msg(M_WARN, "CreateFile failed on TAP device: %s", device_path); + } + else + { + tap_allow_nonadmin_access_handle(device_path, hand); + CloseHandle(hand); + } + + device_number++; + } + } + gc_free(&gc); } /* @@ -4503,68 +4906,80 @@ tap_allow_nonadmin_access (const char *dev_node) bool dhcp_release_by_adapter_index(const DWORD adapter_index) { - struct gc_arena gc = gc_new (); - bool ret = false; - const IP_ADAPTER_INDEX_MAP *inter = get_interface_info (adapter_index, &gc); + struct gc_arena gc = gc_new(); + bool ret = false; + const IP_ADAPTER_INDEX_MAP *inter = get_interface_info(adapter_index, &gc); - if (inter) + if (inter) { - DWORD status = IpReleaseAddress ((IP_ADAPTER_INDEX_MAP *)inter); - if (status == NO_ERROR) - { - msg (D_TUNTAP_INFO, "TAP: DHCP address released"); - ret = true; - } - else - msg (M_WARN, "NOTE: Release of DHCP-assigned IP address lease on TAP-Windows adapter failed: %s (code=%u)", - strerror_win32 (status, &gc), - (unsigned int)status); + DWORD status = IpReleaseAddress((IP_ADAPTER_INDEX_MAP *)inter); + if (status == NO_ERROR) + { + msg(D_TUNTAP_INFO, "TAP: DHCP address released"); + ret = true; + } + else + { + msg(M_WARN, "NOTE: Release of DHCP-assigned IP address lease on TAP-Windows adapter failed: %s (code=%u)", + strerror_win32(status, &gc), + (unsigned int)status); + } } - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } static bool -dhcp_release (const struct tuntap *tt) +dhcp_release(const struct tuntap *tt) { - if (tt && tt->options.ip_win32_type == IPW32_SET_DHCP_MASQ && tt->adapter_index != TUN_ADAPTER_INDEX_INVALID) - return dhcp_release_by_adapter_index (tt->adapter_index); - else - return false; + if (tt && tt->options.ip_win32_type == IPW32_SET_DHCP_MASQ && tt->adapter_index != TUN_ADAPTER_INDEX_INVALID) + { + return dhcp_release_by_adapter_index(tt->adapter_index); + } + else + { + return false; + } } bool -dhcp_renew_by_adapter_index (const DWORD adapter_index) +dhcp_renew_by_adapter_index(const DWORD adapter_index) { - struct gc_arena gc = gc_new (); - bool ret = false; - const IP_ADAPTER_INDEX_MAP *inter = get_interface_info (adapter_index, &gc); + struct gc_arena gc = gc_new(); + bool ret = false; + const IP_ADAPTER_INDEX_MAP *inter = get_interface_info(adapter_index, &gc); - if (inter) + if (inter) { - DWORD status = IpRenewAddress ((IP_ADAPTER_INDEX_MAP *)inter); - if (status == NO_ERROR) - { - msg (D_TUNTAP_INFO, "TAP: DHCP address renewal succeeded"); - ret = true; - } - else - msg (M_WARN, "WARNING: Failed to renew DHCP IP address lease on TAP-Windows adapter: %s (code=%u)", - strerror_win32 (status, &gc), - (unsigned int)status); + DWORD status = IpRenewAddress((IP_ADAPTER_INDEX_MAP *)inter); + if (status == NO_ERROR) + { + msg(D_TUNTAP_INFO, "TAP: DHCP address renewal succeeded"); + ret = true; + } + else + { + msg(M_WARN, "WARNING: Failed to renew DHCP IP address lease on TAP-Windows adapter: %s (code=%u)", + strerror_win32(status, &gc), + (unsigned int)status); + } } - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } static bool -dhcp_renew (const struct tuntap *tt) +dhcp_renew(const struct tuntap *tt) { - if (tt && tt->options.ip_win32_type == IPW32_SET_DHCP_MASQ && tt->adapter_index != TUN_ADAPTER_INDEX_INVALID) - return dhcp_renew_by_adapter_index (tt->adapter_index); - else - return false; + if (tt && tt->options.ip_win32_type == IPW32_SET_DHCP_MASQ && tt->adapter_index != TUN_ADAPTER_INDEX_INVALID) + { + return dhcp_renew_by_adapter_index(tt->adapter_index); + } + else + { + return false; + } } /* @@ -4572,124 +4987,138 @@ dhcp_renew (const struct tuntap *tt) */ static void -netsh_command (const struct argv *a, int n, int msglevel) +netsh_command(const struct argv *a, int n, int msglevel) { - int i; - for (i = 0; i < n; ++i) - { - bool status; - openvpn_sleep (1); - netcmd_semaphore_lock (); - argv_msg_prefix (M_INFO, a, "NETSH"); - status = openvpn_execve_check (a, NULL, 0, "ERROR: netsh command failed"); - netcmd_semaphore_release (); - if (status) - return; - openvpn_sleep (4); + int i; + for (i = 0; i < n; ++i) + { + bool status; + openvpn_sleep(1); + netcmd_semaphore_lock(); + argv_msg_prefix(M_INFO, a, "NETSH"); + status = openvpn_execve_check(a, NULL, 0, "ERROR: netsh command failed"); + netcmd_semaphore_release(); + if (status) + { + return; + } + openvpn_sleep(4); } - msg (msglevel, "NETSH: command failed"); + msg(msglevel, "NETSH: command failed"); } void -ipconfig_register_dns (const struct env_set *es) +ipconfig_register_dns(const struct env_set *es) { - struct argv argv = argv_new (); - bool status; - const char err[] = "ERROR: Windows ipconfig command failed"; + struct argv argv = argv_new(); + bool status; + const char err[] = "ERROR: Windows ipconfig command failed"; - msg (D_TUNTAP_INFO, "Start ipconfig commands for register-dns..."); - netcmd_semaphore_lock (); + msg(D_TUNTAP_INFO, "Start ipconfig commands for register-dns..."); + netcmd_semaphore_lock(); - argv_printf (&argv, "%s%sc /flushdns", - get_win_sys_path(), - WIN_IPCONFIG_PATH_SUFFIX); - argv_msg (D_TUNTAP_INFO, &argv); - status = openvpn_execve_check (&argv, es, 0, err); - argv_reset(&argv); + argv_printf(&argv, "%s%sc /flushdns", + get_win_sys_path(), + WIN_IPCONFIG_PATH_SUFFIX); + argv_msg(D_TUNTAP_INFO, &argv); + status = openvpn_execve_check(&argv, es, 0, err); + argv_reset(&argv); - argv_printf (&argv, "%s%sc /registerdns", - get_win_sys_path(), - WIN_IPCONFIG_PATH_SUFFIX); - argv_msg (D_TUNTAP_INFO, &argv); - status = openvpn_execve_check (&argv, es, 0, err); - argv_reset(&argv); + argv_printf(&argv, "%s%sc /registerdns", + get_win_sys_path(), + WIN_IPCONFIG_PATH_SUFFIX); + argv_msg(D_TUNTAP_INFO, &argv); + status = openvpn_execve_check(&argv, es, 0, err); + argv_reset(&argv); - netcmd_semaphore_release (); - msg (D_TUNTAP_INFO, "End ipconfig commands for register-dns..."); + netcmd_semaphore_release(); + msg(D_TUNTAP_INFO, "End ipconfig commands for register-dns..."); } void -ip_addr_string_to_array (in_addr_t *dest, int *dest_len, const IP_ADDR_STRING *src) +ip_addr_string_to_array(in_addr_t *dest, int *dest_len, const IP_ADDR_STRING *src) { - int i = 0; - while (src) + int i = 0; + while (src) { - const unsigned int getaddr_flags = GETADDR_HOST_ORDER; - const char *ip_str = src->IpAddress.String; - in_addr_t ip = 0; - bool succeed = false; + const unsigned int getaddr_flags = GETADDR_HOST_ORDER; + const char *ip_str = src->IpAddress.String; + in_addr_t ip = 0; + bool succeed = false; - if (i >= *dest_len) - break; - if (!ip_str || !strlen (ip_str)) - break; + if (i >= *dest_len) + { + break; + } + if (!ip_str || !strlen(ip_str)) + { + break; + } - ip = getaddr (getaddr_flags, ip_str, 0, &succeed, NULL); - if (!succeed) - break; - dest[i++] = ip; + ip = getaddr(getaddr_flags, ip_str, 0, &succeed, NULL); + if (!succeed) + { + break; + } + dest[i++] = ip; - src = src->Next; + src = src->Next; } - *dest_len = i; + *dest_len = i; #if 0 - { - struct gc_arena gc = gc_new (); - msg (M_INFO, "ip_addr_string_to_array [%d]", *dest_len); - for (i = 0; i < *dest_len; ++i) - { - msg (M_INFO, "%s", print_in_addr_t (dest[i], 0, &gc)); - } - gc_free (&gc); - } + { + struct gc_arena gc = gc_new(); + msg(M_INFO, "ip_addr_string_to_array [%d]", *dest_len); + for (i = 0; i < *dest_len; ++i) + { + msg(M_INFO, "%s", print_in_addr_t(dest[i], 0, &gc)); + } + gc_free(&gc); + } #endif } static bool -ip_addr_one_to_one (const in_addr_t *a1, const int a1len, const IP_ADDR_STRING *ias) +ip_addr_one_to_one(const in_addr_t *a1, const int a1len, const IP_ADDR_STRING *ias) { - in_addr_t a2[8]; - int a2len = SIZE(a2); - int i; + in_addr_t a2[8]; + int a2len = SIZE(a2); + int i; - ip_addr_string_to_array (a2, &a2len, ias); - /*msg (M_INFO, "a1len=%d a2len=%d", a1len, a2len);*/ - if (a1len != a2len) - return false; + ip_addr_string_to_array(a2, &a2len, ias); + /*msg (M_INFO, "a1len=%d a2len=%d", a1len, a2len);*/ + if (a1len != a2len) + { + return false; + } - for (i = 0; i < a1len; ++i) + for (i = 0; i < a1len; ++i) { - if (a1[i] != a2[i]) - return false; + if (a1[i] != a2[i]) + { + return false; + } } - return true; + return true; } static bool -ip_addr_member_of (const in_addr_t addr, const IP_ADDR_STRING *ias) +ip_addr_member_of(const in_addr_t addr, const IP_ADDR_STRING *ias) { - in_addr_t aa[8]; - int len = SIZE(aa); - int i; + in_addr_t aa[8]; + int len = SIZE(aa); + int i; - ip_addr_string_to_array (aa, &len, ias); - for (i = 0; i < len; ++i) + ip_addr_string_to_array(aa, &len, ias); + for (i = 0; i < len; ++i) { - if (addr == aa[i]) - return true; + if (addr == aa[i]) + { + return true; + } } - return false; + return false; } /** @@ -4699,273 +5128,289 @@ ip_addr_member_of (const in_addr_t addr, const IP_ADDR_STRING *ias) * No action is taken if number of addresses (addr_len) < 1. */ static void -netsh_set_dns6_servers (const struct in6_addr *addr_list, - const int addr_len, - const char *flex_name) +netsh_set_dns6_servers(const struct in6_addr *addr_list, + const int addr_len, + const char *flex_name) { - struct gc_arena gc = gc_new (); - struct argv argv = argv_new (); + struct gc_arena gc = gc_new(); + struct argv argv = argv_new(); for (int i = 0; i < addr_len; ++i) { - const char *fmt = (i == 0) ? - "%s%sc interface ipv6 set dns %s static %s" - : "%s%sc interface ipv6 add dns %s %s"; - argv_printf (&argv, fmt, get_win_sys_path(), - NETSH_PATH_SUFFIX, flex_name, - print_in6_addr (addr_list[i], 0, &gc)); + const char *fmt = (i == 0) ? + "%s%sc interface ipv6 set dns %s static %s" + : "%s%sc interface ipv6 add dns %s %s"; + argv_printf(&argv, fmt, get_win_sys_path(), + NETSH_PATH_SUFFIX, flex_name, + print_in6_addr(addr_list[i], 0, &gc)); - /* disable slow address validation on Windows 7 and higher */ - if (win32_version_info() >= WIN_7) - argv_printf_cat (&argv, "%s", "validate=no"); + /* disable slow address validation on Windows 7 and higher */ + if (win32_version_info() >= WIN_7) + { + argv_printf_cat(&argv, "%s", "validate=no"); + } - /* Treat errors while adding as non-fatal as we do not check for duplicates */ - netsh_command (&argv, 1, (i==0)? M_FATAL : M_NONFATAL); + /* Treat errors while adding as non-fatal as we do not check for duplicates */ + netsh_command(&argv, 1, (i==0) ? M_FATAL : M_NONFATAL); } - argv_reset (&argv); - gc_free (&gc); + argv_reset(&argv); + gc_free(&gc); } static void -netsh_ifconfig_options (const char *type, - const in_addr_t *addr_list, - const int addr_len, - const IP_ADDR_STRING *current, - const char *flex_name, - const bool test_first) -{ - struct gc_arena gc = gc_new (); - struct argv argv = argv_new (); - bool delete_first = false; - - /* first check if we should delete existing DNS/WINS settings from TAP interface */ - if (test_first) - { - if (!ip_addr_one_to_one (addr_list, addr_len, current)) - delete_first = true; - } - else - delete_first = true; - - /* delete existing DNS/WINS settings from TAP interface */ - if (delete_first) - { - argv_printf (&argv, "%s%sc interface ip delete %s %s all", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - type, - flex_name); - netsh_command (&argv, 2, M_FATAL); - } - - /* add new DNS/WINS settings to TAP interface */ - { - int count = 0; - int i; - for (i = 0; i < addr_len; ++i) - { - if (delete_first || !test_first || !ip_addr_member_of (addr_list[i], current)) - { - const char *fmt = count ? - "%s%sc interface ip add %s %s %s" - : "%s%sc interface ip set %s %s static %s"; - - argv_printf (&argv, fmt, - get_win_sys_path(), - NETSH_PATH_SUFFIX, - type, - flex_name, - print_in_addr_t (addr_list[i], 0, &gc)); - netsh_command (&argv, 2, M_FATAL); - - ++count; - } - else - { - msg (M_INFO, "NETSH: \"%s\" %s %s [already set]", - flex_name, - type, - print_in_addr_t (addr_list[i], 0, &gc)); - } - } - } - - argv_reset (&argv); - gc_free (&gc); +netsh_ifconfig_options(const char *type, + const in_addr_t *addr_list, + const int addr_len, + const IP_ADDR_STRING *current, + const char *flex_name, + const bool test_first) +{ + struct gc_arena gc = gc_new(); + struct argv argv = argv_new(); + bool delete_first = false; + + /* first check if we should delete existing DNS/WINS settings from TAP interface */ + if (test_first) + { + if (!ip_addr_one_to_one(addr_list, addr_len, current)) + { + delete_first = true; + } + } + else + { + delete_first = true; + } + + /* delete existing DNS/WINS settings from TAP interface */ + if (delete_first) + { + argv_printf(&argv, "%s%sc interface ip delete %s %s all", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + type, + flex_name); + netsh_command(&argv, 2, M_FATAL); + } + + /* add new DNS/WINS settings to TAP interface */ + { + int count = 0; + int i; + for (i = 0; i < addr_len; ++i) + { + if (delete_first || !test_first || !ip_addr_member_of(addr_list[i], current)) + { + const char *fmt = count ? + "%s%sc interface ip add %s %s %s" + : "%s%sc interface ip set %s %s static %s"; + + argv_printf(&argv, fmt, + get_win_sys_path(), + NETSH_PATH_SUFFIX, + type, + flex_name, + print_in_addr_t(addr_list[i], 0, &gc)); + netsh_command(&argv, 2, M_FATAL); + + ++count; + } + else + { + msg(M_INFO, "NETSH: \"%s\" %s %s [already set]", + flex_name, + type, + print_in_addr_t(addr_list[i], 0, &gc)); + } + } + } + + argv_reset(&argv); + gc_free(&gc); } static void -init_ip_addr_string2 (IP_ADDR_STRING *dest, const IP_ADDR_STRING *src1, const IP_ADDR_STRING *src2) +init_ip_addr_string2(IP_ADDR_STRING *dest, const IP_ADDR_STRING *src1, const IP_ADDR_STRING *src2) { - CLEAR (dest[0]); - CLEAR (dest[1]); - if (src1) + CLEAR(dest[0]); + CLEAR(dest[1]); + if (src1) { - dest[0] = *src1; - dest[0].Next = NULL; + dest[0] = *src1; + dest[0].Next = NULL; } - if (src2) + if (src2) { - dest[1] = *src2; - dest[0].Next = &dest[1]; - dest[1].Next = NULL; + dest[1] = *src2; + dest[0].Next = &dest[1]; + dest[1].Next = NULL; } } static void -netsh_ifconfig (const struct tuntap_options *to, - const char *flex_name, - const in_addr_t ip, - const in_addr_t netmask, - const unsigned int flags) -{ - struct gc_arena gc = gc_new (); - struct argv argv = argv_new (); - const IP_ADAPTER_INFO *ai = NULL; - const IP_PER_ADAPTER_INFO *pai = NULL; - - if (flags & NI_TEST_FIRST) - { - const IP_ADAPTER_INFO *list = get_adapter_info_list (&gc); - const int index = get_adapter_index_flexible (flex_name); - ai = get_adapter (list, index); - pai = get_per_adapter_info (index, &gc); - } - - if (flags & NI_IP_NETMASK) - { - if (test_adapter_ip_netmask (ai, ip, netmask)) - { - msg (M_INFO, "NETSH: \"%s\" %s/%s [already set]", - flex_name, - print_in_addr_t (ip, 0, &gc), - print_in_addr_t (netmask, 0, &gc)); - } - else - { - /* example: netsh interface ip set address my-tap static 10.3.0.1 255.255.255.0 */ - argv_printf (&argv, "%s%sc interface ip set address %s static %s %s", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - flex_name, - print_in_addr_t (ip, 0, &gc), - print_in_addr_t (netmask, 0, &gc)); - - netsh_command (&argv, 4, M_FATAL); - } - } - - /* set WINS/DNS options */ - if (flags & NI_OPTIONS) - { - IP_ADDR_STRING wins[2]; - CLEAR (wins[0]); - CLEAR (wins[1]); - - netsh_ifconfig_options ("dns", - to->dns, - to->dns_len, - pai ? &pai->DnsServerList : NULL, - flex_name, - BOOL_CAST (flags & NI_TEST_FIRST)); - if (ai && ai->HaveWins) - init_ip_addr_string2 (wins, &ai->PrimaryWinsServer, &ai->SecondaryWinsServer); - - netsh_ifconfig_options ("wins", - to->wins, - to->wins_len, - ai ? wins : NULL, - flex_name, - BOOL_CAST (flags & NI_TEST_FIRST)); - } - - argv_reset (&argv); - gc_free (&gc); +netsh_ifconfig(const struct tuntap_options *to, + const char *flex_name, + const in_addr_t ip, + const in_addr_t netmask, + const unsigned int flags) +{ + struct gc_arena gc = gc_new(); + struct argv argv = argv_new(); + const IP_ADAPTER_INFO *ai = NULL; + const IP_PER_ADAPTER_INFO *pai = NULL; + + if (flags & NI_TEST_FIRST) + { + const IP_ADAPTER_INFO *list = get_adapter_info_list(&gc); + const int index = get_adapter_index_flexible(flex_name); + ai = get_adapter(list, index); + pai = get_per_adapter_info(index, &gc); + } + + if (flags & NI_IP_NETMASK) + { + if (test_adapter_ip_netmask(ai, ip, netmask)) + { + msg(M_INFO, "NETSH: \"%s\" %s/%s [already set]", + flex_name, + print_in_addr_t(ip, 0, &gc), + print_in_addr_t(netmask, 0, &gc)); + } + else + { + /* example: netsh interface ip set address my-tap static 10.3.0.1 255.255.255.0 */ + argv_printf(&argv, "%s%sc interface ip set address %s static %s %s", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + flex_name, + print_in_addr_t(ip, 0, &gc), + print_in_addr_t(netmask, 0, &gc)); + + netsh_command(&argv, 4, M_FATAL); + } + } + + /* set WINS/DNS options */ + if (flags & NI_OPTIONS) + { + IP_ADDR_STRING wins[2]; + CLEAR(wins[0]); + CLEAR(wins[1]); + + netsh_ifconfig_options("dns", + to->dns, + to->dns_len, + pai ? &pai->DnsServerList : NULL, + flex_name, + BOOL_CAST(flags & NI_TEST_FIRST)); + if (ai && ai->HaveWins) + { + init_ip_addr_string2(wins, &ai->PrimaryWinsServer, &ai->SecondaryWinsServer); + } + + netsh_ifconfig_options("wins", + to->wins, + to->wins_len, + ai ? wins : NULL, + flex_name, + BOOL_CAST(flags & NI_TEST_FIRST)); + } + + argv_reset(&argv); + gc_free(&gc); } static void -netsh_enable_dhcp (const struct tuntap_options *to, - const char *actual_name) +netsh_enable_dhcp(const struct tuntap_options *to, + const char *actual_name) { - struct argv argv = argv_new (); + struct argv argv = argv_new(); - /* example: netsh interface ip set address my-tap dhcp */ - argv_printf (&argv, - "%s%sc interface ip set address %s dhcp", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - actual_name); + /* example: netsh interface ip set address my-tap dhcp */ + argv_printf(&argv, + "%s%sc interface ip set address %s dhcp", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + actual_name); - netsh_command (&argv, 4, M_FATAL); + netsh_command(&argv, 4, M_FATAL); - argv_reset (&argv); + argv_reset(&argv); } /* * Return a TAP name for netsh commands. */ static const char * -netsh_get_id (const char *dev_node, struct gc_arena *gc) +netsh_get_id(const char *dev_node, struct gc_arena *gc) { - const struct tap_reg *tap_reg = get_tap_reg (gc); - const struct panel_reg *panel_reg = get_panel_reg (gc); - struct buffer actual = alloc_buf_gc (256, gc); - const char *guid; + const struct tap_reg *tap_reg = get_tap_reg(gc); + const struct panel_reg *panel_reg = get_panel_reg(gc); + struct buffer actual = alloc_buf_gc(256, gc); + const char *guid; - at_least_one_tap_win (tap_reg); + at_least_one_tap_win(tap_reg); - if (dev_node) + if (dev_node) { - guid = get_device_guid (dev_node, BPTR (&actual), BCAP (&actual), tap_reg, panel_reg, gc); + guid = get_device_guid(dev_node, BPTR(&actual), BCAP(&actual), tap_reg, panel_reg, gc); } - else + else { - guid = get_unspecified_device_guid (0, BPTR (&actual), BCAP (&actual), tap_reg, panel_reg, gc); + guid = get_unspecified_device_guid(0, BPTR(&actual), BCAP(&actual), tap_reg, panel_reg, gc); - if (get_unspecified_device_guid (1, NULL, 0, tap_reg, panel_reg, gc)) /* ambiguous if more than one TAP-Windows adapter */ - guid = NULL; + if (get_unspecified_device_guid(1, NULL, 0, tap_reg, panel_reg, gc)) /* ambiguous if more than one TAP-Windows adapter */ + { + guid = NULL; + } } - if (!guid) - return "NULL"; /* not found */ - else if (strcmp (BPTR (&actual), "NULL")) - return BPTR (&actual); /* control panel name */ - else - return guid; /* no control panel name, return GUID instead */ + if (!guid) + { + return "NULL"; /* not found */ + } + else if (strcmp(BPTR(&actual), "NULL")) + { + return BPTR(&actual); /* control panel name */ + } + else + { + return guid; /* no control panel name, return GUID instead */ + } } /* * Called iteratively on TAP-Windows wait-for-initialization polling loop */ void -tun_standby_init (struct tuntap *tt) +tun_standby_init(struct tuntap *tt) { - tt->standby_iter = 0; + tt->standby_iter = 0; } bool -tun_standby (struct tuntap *tt) +tun_standby(struct tuntap *tt) { - bool ret = true; - ++tt->standby_iter; - if (tt->options.ip_win32_type == IPW32_SET_ADAPTIVE) + bool ret = true; + ++tt->standby_iter; + if (tt->options.ip_win32_type == IPW32_SET_ADAPTIVE) { - if (tt->standby_iter == IPW32_SET_ADAPTIVE_TRY_NETSH) - { - msg (M_INFO, "NOTE: now trying netsh (this may take some time)"); - netsh_ifconfig (&tt->options, - tt->actual_name, - tt->local, - tt->adapter_netmask, - NI_TEST_FIRST|NI_IP_NETMASK|NI_OPTIONS); - } - else if (tt->standby_iter >= IPW32_SET_ADAPTIVE_TRY_NETSH*2) - { - ret = false; - } + if (tt->standby_iter == IPW32_SET_ADAPTIVE_TRY_NETSH) + { + msg(M_INFO, "NOTE: now trying netsh (this may take some time)"); + netsh_ifconfig(&tt->options, + tt->actual_name, + tt->local, + tt->adapter_netmask, + NI_TEST_FIRST|NI_IP_NETMASK|NI_OPTIONS); + } + else if (tt->standby_iter >= IPW32_SET_ADAPTIVE_TRY_NETSH*2) + { + ret = false; + } } - return ret; + return ret; } /* @@ -4974,765 +5419,849 @@ tun_standby (struct tuntap *tt) */ static void -write_dhcp_u8 (struct buffer *buf, const int type, const int data, bool *error) +write_dhcp_u8(struct buffer *buf, const int type, const int data, bool *error) { - if (!buf_safe (buf, 3)) + if (!buf_safe(buf, 3)) { - *error = true; - msg (M_WARN, "write_dhcp_u8: buffer overflow building DHCP options"); - return; + *error = true; + msg(M_WARN, "write_dhcp_u8: buffer overflow building DHCP options"); + return; } - buf_write_u8 (buf, type); - buf_write_u8 (buf, 1); - buf_write_u8 (buf, data); + buf_write_u8(buf, type); + buf_write_u8(buf, 1); + buf_write_u8(buf, data); } static void -write_dhcp_u32_array (struct buffer *buf, const int type, const uint32_t *data, const unsigned int len, bool *error) +write_dhcp_u32_array(struct buffer *buf, const int type, const uint32_t *data, const unsigned int len, bool *error) { - if (len > 0) + if (len > 0) { - int i; - const int size = len * sizeof (uint32_t); + int i; + const int size = len * sizeof(uint32_t); - if (!buf_safe (buf, 2 + size)) - { - *error = true; - msg (M_WARN, "write_dhcp_u32_array: buffer overflow building DHCP options"); - return; - } - if (size < 1 || size > 255) - { - *error = true; - msg (M_WARN, "write_dhcp_u32_array: size (%d) must be > 0 and <= 255", size); - return; - } - buf_write_u8 (buf, type); - buf_write_u8 (buf, size); - for (i = 0; i < len; ++i) - buf_write_u32 (buf, data[i]); + if (!buf_safe(buf, 2 + size)) + { + *error = true; + msg(M_WARN, "write_dhcp_u32_array: buffer overflow building DHCP options"); + return; + } + if (size < 1 || size > 255) + { + *error = true; + msg(M_WARN, "write_dhcp_u32_array: size (%d) must be > 0 and <= 255", size); + return; + } + buf_write_u8(buf, type); + buf_write_u8(buf, size); + for (i = 0; i < len; ++i) + buf_write_u32(buf, data[i]); } } static void -write_dhcp_str (struct buffer *buf, const int type, const char *str, bool *error) +write_dhcp_str(struct buffer *buf, const int type, const char *str, bool *error) { - const int len = strlen (str); - if (!buf_safe (buf, 2 + len)) + const int len = strlen(str); + if (!buf_safe(buf, 2 + len)) { - *error = true; - msg (M_WARN, "write_dhcp_str: buffer overflow building DHCP options"); - return; + *error = true; + msg(M_WARN, "write_dhcp_str: buffer overflow building DHCP options"); + return; } - if (len < 1 || len > 255) + if (len < 1 || len > 255) { - *error = true; - msg (M_WARN, "write_dhcp_str: string '%s' must be > 0 bytes and <= 255 bytes", str); - return; + *error = true; + msg(M_WARN, "write_dhcp_str: string '%s' must be > 0 bytes and <= 255 bytes", str); + return; } - buf_write_u8 (buf, type); - buf_write_u8 (buf, len); - buf_write (buf, str, len); + buf_write_u8(buf, type); + buf_write_u8(buf, len); + buf_write(buf, str, len); } static bool -build_dhcp_options_string (struct buffer *buf, const struct tuntap_options *o) -{ - bool error = false; - if (o->domain) - write_dhcp_str (buf, 15, o->domain, &error); - - if (o->netbios_scope) - write_dhcp_str (buf, 47, o->netbios_scope, &error); - - if (o->netbios_node_type) - write_dhcp_u8 (buf, 46, o->netbios_node_type, &error); - - write_dhcp_u32_array (buf, 6, (uint32_t*)o->dns, o->dns_len, &error); - write_dhcp_u32_array (buf, 44, (uint32_t*)o->wins, o->wins_len, &error); - write_dhcp_u32_array (buf, 42, (uint32_t*)o->ntp, o->ntp_len, &error); - write_dhcp_u32_array (buf, 45, (uint32_t*)o->nbdd, o->nbdd_len, &error); - - /* the MS DHCP server option 'Disable Netbios-over-TCP/IP - is implemented as vendor option 001, value 002. - A value of 001 means 'leave NBT alone' which is the default */ - if (o->disable_nbt) - { - if (!buf_safe (buf, 8)) - { - msg (M_WARN, "build_dhcp_options_string: buffer overflow building DHCP options"); - return false; - } - buf_write_u8 (buf, 43); - buf_write_u8 (buf, 6); /* total length field */ - buf_write_u8 (buf, 0x001); - buf_write_u8 (buf, 4); /* length of the vendor specified field */ - buf_write_u32 (buf, 0x002); - } - return !error; +build_dhcp_options_string(struct buffer *buf, const struct tuntap_options *o) +{ + bool error = false; + if (o->domain) + { + write_dhcp_str(buf, 15, o->domain, &error); + } + + if (o->netbios_scope) + { + write_dhcp_str(buf, 47, o->netbios_scope, &error); + } + + if (o->netbios_node_type) + { + write_dhcp_u8(buf, 46, o->netbios_node_type, &error); + } + + write_dhcp_u32_array(buf, 6, (uint32_t *)o->dns, o->dns_len, &error); + write_dhcp_u32_array(buf, 44, (uint32_t *)o->wins, o->wins_len, &error); + write_dhcp_u32_array(buf, 42, (uint32_t *)o->ntp, o->ntp_len, &error); + write_dhcp_u32_array(buf, 45, (uint32_t *)o->nbdd, o->nbdd_len, &error); + + /* the MS DHCP server option 'Disable Netbios-over-TCP/IP + * is implemented as vendor option 001, value 002. + * A value of 001 means 'leave NBT alone' which is the default */ + if (o->disable_nbt) + { + if (!buf_safe(buf, 8)) + { + msg(M_WARN, "build_dhcp_options_string: buffer overflow building DHCP options"); + return false; + } + buf_write_u8(buf, 43); + buf_write_u8(buf, 6);/* total length field */ + buf_write_u8(buf, 0x001); + buf_write_u8(buf, 4);/* length of the vendor specified field */ + buf_write_u32(buf, 0x002); + } + return !error; } static void -fork_dhcp_action (struct tuntap *tt) +fork_dhcp_action(struct tuntap *tt) { - if (tt->options.dhcp_pre_release || tt->options.dhcp_renew) + if (tt->options.dhcp_pre_release || tt->options.dhcp_renew) { - struct gc_arena gc = gc_new (); - struct buffer cmd = alloc_buf_gc (256, &gc); - const int verb = 3; - const int pre_sleep = 1; - - buf_printf (&cmd, "openvpn --verb %d --tap-sleep %d", verb, pre_sleep); - if (tt->options.dhcp_pre_release) - buf_printf (&cmd, " --dhcp-pre-release"); - if (tt->options.dhcp_renew) - buf_printf (&cmd, " --dhcp-renew"); - buf_printf (&cmd, " --dhcp-internal %u", (unsigned int)tt->adapter_index); + struct gc_arena gc = gc_new(); + struct buffer cmd = alloc_buf_gc(256, &gc); + const int verb = 3; + const int pre_sleep = 1; - fork_to_self (BSTR (&cmd)); - gc_free (&gc); + buf_printf(&cmd, "openvpn --verb %d --tap-sleep %d", verb, pre_sleep); + if (tt->options.dhcp_pre_release) + { + buf_printf(&cmd, " --dhcp-pre-release"); + } + if (tt->options.dhcp_renew) + { + buf_printf(&cmd, " --dhcp-renew"); + } + buf_printf(&cmd, " --dhcp-internal %u", (unsigned int)tt->adapter_index); + + fork_to_self(BSTR(&cmd)); + gc_free(&gc); } } static void -register_dns_service (const struct tuntap *tt) +register_dns_service(const struct tuntap *tt) { - DWORD len; - HANDLE msg_channel = tt->options.msg_channel; - ack_message_t ack; - struct gc_arena gc = gc_new (); + DWORD len; + HANDLE msg_channel = tt->options.msg_channel; + ack_message_t ack; + struct gc_arena gc = gc_new(); - message_header_t rdns = { msg_register_dns, sizeof(message_header_t), 0 }; + message_header_t rdns = { msg_register_dns, sizeof(message_header_t), 0 }; - if (!WriteFile (msg_channel, &rdns, sizeof (rdns), &len, NULL) || - !ReadFile (msg_channel, &ack, sizeof (ack), &len, NULL)) + if (!WriteFile(msg_channel, &rdns, sizeof(rdns), &len, NULL) + || !ReadFile(msg_channel, &ack, sizeof(ack), &len, NULL)) { - msg (M_WARN, "Register_dns: could not talk to service: %s [status=0x%lx]", - strerror_win32 (GetLastError (), &gc), GetLastError ()); + msg(M_WARN, "Register_dns: could not talk to service: %s [status=0x%lx]", + strerror_win32(GetLastError(), &gc), GetLastError()); } - else if (ack.error_number != NO_ERROR) + else if (ack.error_number != NO_ERROR) { - msg (M_WARN, "Register_dns failed using service: %s [status=0x%x]", - strerror_win32 (ack.error_number, &gc), ack.error_number); + msg(M_WARN, "Register_dns failed using service: %s [status=0x%x]", + strerror_win32(ack.error_number, &gc), ack.error_number); } - else - msg (M_INFO, "Register_dns request sent to the service"); + else + { + msg(M_INFO, "Register_dns request sent to the service"); + } - gc_free (&gc); + gc_free(&gc); } void -fork_register_dns_action (struct tuntap *tt) +fork_register_dns_action(struct tuntap *tt) { - if (tt && tt->options.register_dns && tt->options.msg_channel) + if (tt && tt->options.register_dns && tt->options.msg_channel) { - register_dns_service (tt); + register_dns_service(tt); } - else if (tt && tt->options.register_dns) + else if (tt && tt->options.register_dns) { - struct gc_arena gc = gc_new (); - struct buffer cmd = alloc_buf_gc (256, &gc); - const int verb = 3; - - buf_printf (&cmd, "openvpn --verb %d --register-dns --rdns-internal", verb); - fork_to_self (BSTR (&cmd)); - gc_free (&gc); + struct gc_arena gc = gc_new(); + struct buffer cmd = alloc_buf_gc(256, &gc); + const int verb = 3; + + buf_printf(&cmd, "openvpn --verb %d --register-dns --rdns-internal", verb); + fork_to_self(BSTR(&cmd)); + gc_free(&gc); } } static uint32_t -dhcp_masq_addr (const in_addr_t local, const in_addr_t netmask, const int offset) +dhcp_masq_addr(const in_addr_t local, const in_addr_t netmask, const int offset) { - struct gc_arena gc = gc_new (); - in_addr_t dsa; /* DHCP server addr */ + struct gc_arena gc = gc_new(); + in_addr_t dsa; /* DHCP server addr */ - if (offset < 0) - dsa = (local | (~netmask)) + offset; - else - dsa = (local & netmask) + offset; + if (offset < 0) + { + dsa = (local | (~netmask)) + offset; + } + else + { + dsa = (local & netmask) + offset; + } - if (dsa == local) - msg (M_FATAL, "ERROR: There is a clash between the --ifconfig local address and the internal DHCP server address -- both are set to %s -- please use the --ip-win32 dynamic option to choose a different free address from the --ifconfig subnet for the internal DHCP server", print_in_addr_t (dsa, 0, &gc)); + if (dsa == local) + { + msg(M_FATAL, "ERROR: There is a clash between the --ifconfig local address and the internal DHCP server address -- both are set to %s -- please use the --ip-win32 dynamic option to choose a different free address from the --ifconfig subnet for the internal DHCP server", print_in_addr_t(dsa, 0, &gc)); + } - if ((local & netmask) != (dsa & netmask)) - msg (M_FATAL, "ERROR: --ip-win32 dynamic [offset] : offset is outside of --ifconfig subnet"); + if ((local & netmask) != (dsa & netmask)) + { + msg(M_FATAL, "ERROR: --ip-win32 dynamic [offset] : offset is outside of --ifconfig subnet"); + } - gc_free (&gc); - return htonl(dsa); + gc_free(&gc); + return htonl(dsa); } void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - struct gc_arena gc = gc_new (); - char device_path[256]; - const char *device_guid = NULL; - DWORD len; - bool dhcp_masq = false; - bool dhcp_masq_post = false; + struct gc_arena gc = gc_new(); + char device_path[256]; + const char *device_guid = NULL; + DWORD len; + bool dhcp_masq = false; + bool dhcp_masq_post = false; - /*netcmd_semaphore_lock ();*/ + /*netcmd_semaphore_lock ();*/ - msg( M_INFO, "open_tun"); + msg( M_INFO, "open_tun"); - if (tt->type == DEV_TYPE_NULL) + if (tt->type == DEV_TYPE_NULL) { - open_null (tt); - gc_free (&gc); - return; + open_null(tt); + gc_free(&gc); + return; } - else if (tt->type == DEV_TYPE_TAP || tt->type == DEV_TYPE_TUN) + else if (tt->type == DEV_TYPE_TAP || tt->type == DEV_TYPE_TUN) { - ; } - else + else { - msg (M_FATAL|M_NOPREFIX, "Unknown virtual device type: '%s'", dev); + msg(M_FATAL|M_NOPREFIX, "Unknown virtual device type: '%s'", dev); } - /* - * Lookup the device name in the registry, using the --dev-node high level name. - */ - { - const struct tap_reg *tap_reg = get_tap_reg (&gc); - const struct panel_reg *panel_reg = get_panel_reg (&gc); - char actual_buffer[256]; + /* + * Lookup the device name in the registry, using the --dev-node high level name. + */ + { + const struct tap_reg *tap_reg = get_tap_reg(&gc); + const struct panel_reg *panel_reg = get_panel_reg(&gc); + char actual_buffer[256]; - at_least_one_tap_win (tap_reg); + at_least_one_tap_win(tap_reg); - if (dev_node) - { - /* Get the device GUID for the device specified with --dev-node. */ - device_guid = get_device_guid (dev_node, actual_buffer, sizeof (actual_buffer), tap_reg, panel_reg, &gc); + if (dev_node) + { + /* Get the device GUID for the device specified with --dev-node. */ + device_guid = get_device_guid(dev_node, actual_buffer, sizeof(actual_buffer), tap_reg, panel_reg, &gc); - if (!device_guid) - msg (M_FATAL, "TAP-Windows adapter '%s' not found", dev_node); + if (!device_guid) + { + msg(M_FATAL, "TAP-Windows adapter '%s' not found", dev_node); + } - /* Open Windows TAP-Windows adapter */ - openvpn_snprintf (device_path, sizeof(device_path), "%s%s%s", - USERMODEDEVICEDIR, - device_guid, - TAP_WIN_SUFFIX); - - tt->hand = CreateFile ( - device_path, - GENERIC_READ | GENERIC_WRITE, - 0, /* was: FILE_SHARE_READ */ - 0, - OPEN_EXISTING, - FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, - 0 - ); - - if (tt->hand == INVALID_HANDLE_VALUE) - msg (M_ERR, "CreateFile failed on TAP device: %s", device_path); - } - else - { - int device_number = 0; + /* Open Windows TAP-Windows adapter */ + openvpn_snprintf(device_path, sizeof(device_path), "%s%s%s", + USERMODEDEVICEDIR, + device_guid, + TAP_WIN_SUFFIX); + + tt->hand = CreateFile( + device_path, + GENERIC_READ | GENERIC_WRITE, + 0, /* was: FILE_SHARE_READ */ + 0, + OPEN_EXISTING, + FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, + 0 + ); - /* Try opening all TAP devices until we find one available */ - while (true) - { - device_guid = get_unspecified_device_guid (device_number, - actual_buffer, - sizeof (actual_buffer), - tap_reg, - panel_reg, - &gc); + if (tt->hand == INVALID_HANDLE_VALUE) + { + msg(M_ERR, "CreateFile failed on TAP device: %s", device_path); + } + } + else + { + int device_number = 0; - if (!device_guid) - msg (M_FATAL, "All TAP-Windows adapters on this system are currently in use."); + /* Try opening all TAP devices until we find one available */ + while (true) + { + device_guid = get_unspecified_device_guid(device_number, + actual_buffer, + sizeof(actual_buffer), + tap_reg, + panel_reg, + &gc); + + if (!device_guid) + { + msg(M_FATAL, "All TAP-Windows adapters on this system are currently in use."); + } + + /* Open Windows TAP-Windows adapter */ + openvpn_snprintf(device_path, sizeof(device_path), "%s%s%s", + USERMODEDEVICEDIR, + device_guid, + TAP_WIN_SUFFIX); + + tt->hand = CreateFile( + device_path, + GENERIC_READ | GENERIC_WRITE, + 0, /* was: FILE_SHARE_READ */ + 0, + OPEN_EXISTING, + FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, + 0 + ); + + if (tt->hand == INVALID_HANDLE_VALUE) + { + msg(D_TUNTAP_INFO, "CreateFile failed on TAP device: %s", device_path); + } + else + { + break; + } + + device_number++; + } + } - /* Open Windows TAP-Windows adapter */ - openvpn_snprintf (device_path, sizeof(device_path), "%s%s%s", - USERMODEDEVICEDIR, - device_guid, - TAP_WIN_SUFFIX); - - tt->hand = CreateFile ( - device_path, - GENERIC_READ | GENERIC_WRITE, - 0, /* was: FILE_SHARE_READ */ - 0, - OPEN_EXISTING, - FILE_ATTRIBUTE_SYSTEM | FILE_FLAG_OVERLAPPED, - 0 - ); + /* translate high-level device name into a device instance + * GUID using the registry */ + tt->actual_name = string_alloc(actual_buffer, NULL); + } - if (tt->hand == INVALID_HANDLE_VALUE) - msg (D_TUNTAP_INFO, "CreateFile failed on TAP device: %s", device_path); - else - break; - - device_number++; - } - } - - /* translate high-level device name into a device instance - GUID using the registry */ - tt->actual_name = string_alloc (actual_buffer, NULL); - } - - msg (M_INFO, "TAP-WIN32 device [%s] opened: %s", tt->actual_name, device_path); - tt->adapter_index = get_adapter_index (device_guid); - - /* get driver version info */ - { - ULONG info[3]; - CLEAR (info); - if (DeviceIoControl (tt->hand, TAP_WIN_IOCTL_GET_VERSION, - &info, sizeof (info), - &info, sizeof (info), &len, NULL)) - { - msg (D_TUNTAP_INFO, "TAP-Windows Driver Version %d.%d %s", - (int) info[0], - (int) info[1], - (info[2] ? "(DEBUG)" : "")); - - } - if (!(info[0] == TAP_WIN_MIN_MAJOR && info[1] >= TAP_WIN_MIN_MINOR)) - msg (M_FATAL, "ERROR: This version of " PACKAGE_NAME " requires a TAP-Windows driver that is at least version %d.%d -- If you recently upgraded your " PACKAGE_NAME " distribution, a reboot is probably required at this point to get Windows to see the new driver.", - TAP_WIN_MIN_MAJOR, - TAP_WIN_MIN_MINOR); - - /* usage of numeric constants is ugly, but this is really tied to - * *this* version of the driver - */ - if (tt->type == DEV_TYPE_TUN && - info[0] == 9 && info[1] < 8) - { - msg( M_INFO, "WARNING: Tap-Win32 driver version %d.%d does not support IPv6 in TUN mode. IPv6 will not work. Upgrade your Tap-Win32 driver.", (int) info[0], (int) info[1] ); - } + msg(M_INFO, "TAP-WIN32 device [%s] opened: %s", tt->actual_name, device_path); + tt->adapter_index = get_adapter_index(device_guid); + + /* get driver version info */ + { + ULONG info[3]; + CLEAR(info); + if (DeviceIoControl(tt->hand, TAP_WIN_IOCTL_GET_VERSION, + &info, sizeof(info), + &info, sizeof(info), &len, NULL)) + { + msg(D_TUNTAP_INFO, "TAP-Windows Driver Version %d.%d %s", + (int) info[0], + (int) info[1], + (info[2] ? "(DEBUG)" : "")); + + } + if (!(info[0] == TAP_WIN_MIN_MAJOR && info[1] >= TAP_WIN_MIN_MINOR)) + { + msg(M_FATAL, "ERROR: This version of " PACKAGE_NAME " requires a TAP-Windows driver that is at least version %d.%d -- If you recently upgraded your " PACKAGE_NAME " distribution, a reboot is probably required at this point to get Windows to see the new driver.", + TAP_WIN_MIN_MAJOR, + TAP_WIN_MIN_MINOR); + } + + /* usage of numeric constants is ugly, but this is really tied to + * *this* version of the driver + */ + if (tt->type == DEV_TYPE_TUN + && info[0] == 9 && info[1] < 8) + { + msg( M_INFO, "WARNING: Tap-Win32 driver version %d.%d does not support IPv6 in TUN mode. IPv6 will not work. Upgrade your Tap-Win32 driver.", (int) info[0], (int) info[1] ); + } + + /* tap driver 9.8 (2.2.0 and 2.2.1 release) is buggy + */ + if (tt->type == DEV_TYPE_TUN + && info[0] == 9 && info[1] == 8) + { + msg( M_FATAL, "ERROR: Tap-Win32 driver version %d.%d is buggy regarding small IPv4 packets in TUN mode. Upgrade your Tap-Win32 driver.", (int) info[0], (int) info[1] ); + } + } - /* tap driver 9.8 (2.2.0 and 2.2.1 release) is buggy + /* get driver MTU */ + { + ULONG mtu; + if (DeviceIoControl(tt->hand, TAP_WIN_IOCTL_GET_MTU, + &mtu, sizeof(mtu), + &mtu, sizeof(mtu), &len, NULL)) + { + tt->post_open_mtu = (int) mtu; + msg(D_MTU_INFO, "TAP-Windows MTU=%d", (int) mtu); + } + } + + /* + * Preliminaries for setting TAP-Windows adapter TCP/IP + * properties via --ip-win32 dynamic or --ip-win32 adaptive. */ - if ( tt->type == DEV_TYPE_TUN && - info[0] == 9 && info[1] == 8) - { - msg( M_FATAL, "ERROR: Tap-Win32 driver version %d.%d is buggy regarding small IPv4 packets in TUN mode. Upgrade your Tap-Win32 driver.", (int) info[0], (int) info[1] ); - } - } - - /* get driver MTU */ - { - ULONG mtu; - if (DeviceIoControl (tt->hand, TAP_WIN_IOCTL_GET_MTU, - &mtu, sizeof (mtu), - &mtu, sizeof (mtu), &len, NULL)) - { - tt->post_open_mtu = (int) mtu; - msg (D_MTU_INFO, "TAP-Windows MTU=%d", (int) mtu); - } - } - - /* - * Preliminaries for setting TAP-Windows adapter TCP/IP - * properties via --ip-win32 dynamic or --ip-win32 adaptive. - */ - if (tt->did_ifconfig_setup) - { - if (tt->options.ip_win32_type == IPW32_SET_DHCP_MASQ) - { - /* - * If adapter is set to non-DHCP, set to DHCP mode. - */ - if (dhcp_status (tt->adapter_index) == DHCP_STATUS_DISABLED) - netsh_enable_dhcp (&tt->options, tt->actual_name); - dhcp_masq = true; - dhcp_masq_post = true; - } - else if (tt->options.ip_win32_type == IPW32_SET_ADAPTIVE) - { - /* - * If adapter is set to non-DHCP, use netsh right away. - */ - if (dhcp_status (tt->adapter_index) != DHCP_STATUS_ENABLED) - { - netsh_ifconfig (&tt->options, - tt->actual_name, - tt->local, - tt->adapter_netmask, - NI_TEST_FIRST|NI_IP_NETMASK|NI_OPTIONS); - } - else - { - dhcp_masq = true; - } - } - } - - /* set point-to-point mode if TUN device */ - - if (tt->type == DEV_TYPE_TUN) - { - if (!tt->did_ifconfig_setup) - { - msg (M_FATAL, "ERROR: --dev tun also requires --ifconfig"); - } - - if (tt->topology == TOP_SUBNET) - { - in_addr_t ep[3]; - BOOL status; - - ep[0] = htonl (tt->local); - ep[1] = htonl (tt->local & tt->remote_netmask); - ep[2] = htonl (tt->remote_netmask); - - status = DeviceIoControl (tt->hand, TAP_WIN_IOCTL_CONFIG_TUN, - ep, sizeof (ep), - ep, sizeof (ep), &len, NULL); - - msg (status ? M_INFO : M_FATAL, "Set TAP-Windows TUN subnet mode network/local/netmask = %s/%s/%s [%s]", - print_in_addr_t (ep[1], IA_NET_ORDER, &gc), - print_in_addr_t (ep[0], IA_NET_ORDER, &gc), - print_in_addr_t (ep[2], IA_NET_ORDER, &gc), - status ? "SUCCEEDED" : "FAILED"); - - } else { - - in_addr_t ep[2]; - ep[0] = htonl (tt->local); - ep[1] = htonl (tt->remote_netmask); - - if (!DeviceIoControl (tt->hand, TAP_WIN_IOCTL_CONFIG_POINT_TO_POINT, - ep, sizeof (ep), - ep, sizeof (ep), &len, NULL)) - msg (M_FATAL, "ERROR: The TAP-Windows driver rejected a DeviceIoControl call to set Point-to-Point mode, which is required for --dev tun"); - } - } - - /* should we tell the TAP-Windows driver to masquerade as a DHCP server as a means - of setting the adapter address? */ - if (dhcp_masq) - { - uint32_t ep[4]; - - /* We will answer DHCP requests with a reply to set IP/subnet to these values */ - ep[0] = htonl (tt->local); - ep[1] = htonl (tt->adapter_netmask); - - /* At what IP address should the DHCP server masquerade at? */ - if (tt->type == DEV_TYPE_TUN) - { - if (tt->topology == TOP_SUBNET) - { - if (tt->options.dhcp_masq_custom_offset) - ep[2] = dhcp_masq_addr (tt->local, tt->remote_netmask, tt->options.dhcp_masq_offset); - else - ep[2] = dhcp_masq_addr (tt->local, tt->remote_netmask, -1); - } - else - ep[2] = htonl (tt->remote_netmask); - } - else - { - ASSERT (tt->type == DEV_TYPE_TAP); - ep[2] = dhcp_masq_addr (tt->local, tt->adapter_netmask, tt->options.dhcp_masq_custom_offset ? tt->options.dhcp_masq_offset : 0); - } - - /* lease time in seconds */ - ep[3] = (uint32_t) tt->options.dhcp_lease_time; - - ASSERT (ep[3] > 0); + if (tt->did_ifconfig_setup) + { + if (tt->options.ip_win32_type == IPW32_SET_DHCP_MASQ) + { + /* + * If adapter is set to non-DHCP, set to DHCP mode. + */ + if (dhcp_status(tt->adapter_index) == DHCP_STATUS_DISABLED) + { + netsh_enable_dhcp(&tt->options, tt->actual_name); + } + dhcp_masq = true; + dhcp_masq_post = true; + } + else if (tt->options.ip_win32_type == IPW32_SET_ADAPTIVE) + { + /* + * If adapter is set to non-DHCP, use netsh right away. + */ + if (dhcp_status(tt->adapter_index) != DHCP_STATUS_ENABLED) + { + netsh_ifconfig(&tt->options, + tt->actual_name, + tt->local, + tt->adapter_netmask, + NI_TEST_FIRST|NI_IP_NETMASK|NI_OPTIONS); + } + else + { + dhcp_masq = true; + } + } + } + + /* set point-to-point mode if TUN device */ + + if (tt->type == DEV_TYPE_TUN) + { + if (!tt->did_ifconfig_setup) + { + msg(M_FATAL, "ERROR: --dev tun also requires --ifconfig"); + } + + if (tt->topology == TOP_SUBNET) + { + in_addr_t ep[3]; + BOOL status; + + ep[0] = htonl(tt->local); + ep[1] = htonl(tt->local & tt->remote_netmask); + ep[2] = htonl(tt->remote_netmask); + + status = DeviceIoControl(tt->hand, TAP_WIN_IOCTL_CONFIG_TUN, + ep, sizeof(ep), + ep, sizeof(ep), &len, NULL); + + msg(status ? M_INFO : M_FATAL, "Set TAP-Windows TUN subnet mode network/local/netmask = %s/%s/%s [%s]", + print_in_addr_t(ep[1], IA_NET_ORDER, &gc), + print_in_addr_t(ep[0], IA_NET_ORDER, &gc), + print_in_addr_t(ep[2], IA_NET_ORDER, &gc), + status ? "SUCCEEDED" : "FAILED"); + + } + else + { + + in_addr_t ep[2]; + ep[0] = htonl(tt->local); + ep[1] = htonl(tt->remote_netmask); + + if (!DeviceIoControl(tt->hand, TAP_WIN_IOCTL_CONFIG_POINT_TO_POINT, + ep, sizeof(ep), + ep, sizeof(ep), &len, NULL)) + { + msg(M_FATAL, "ERROR: The TAP-Windows driver rejected a DeviceIoControl call to set Point-to-Point mode, which is required for --dev tun"); + } + } + } + + /* should we tell the TAP-Windows driver to masquerade as a DHCP server as a means + * of setting the adapter address? */ + if (dhcp_masq) + { + uint32_t ep[4]; + + /* We will answer DHCP requests with a reply to set IP/subnet to these values */ + ep[0] = htonl(tt->local); + ep[1] = htonl(tt->adapter_netmask); + + /* At what IP address should the DHCP server masquerade at? */ + if (tt->type == DEV_TYPE_TUN) + { + if (tt->topology == TOP_SUBNET) + { + if (tt->options.dhcp_masq_custom_offset) + { + ep[2] = dhcp_masq_addr(tt->local, tt->remote_netmask, tt->options.dhcp_masq_offset); + } + else + { + ep[2] = dhcp_masq_addr(tt->local, tt->remote_netmask, -1); + } + } + else + { + ep[2] = htonl(tt->remote_netmask); + } + } + else + { + ASSERT(tt->type == DEV_TYPE_TAP); + ep[2] = dhcp_masq_addr(tt->local, tt->adapter_netmask, tt->options.dhcp_masq_custom_offset ? tt->options.dhcp_masq_offset : 0); + } + + /* lease time in seconds */ + ep[3] = (uint32_t) tt->options.dhcp_lease_time; + + ASSERT(ep[3] > 0); #ifndef SIMULATE_DHCP_FAILED /* this code is disabled to simulate bad DHCP negotiation */ - if (!DeviceIoControl (tt->hand, TAP_WIN_IOCTL_CONFIG_DHCP_MASQ, - ep, sizeof (ep), - ep, sizeof (ep), &len, NULL)) - msg (M_FATAL, "ERROR: The TAP-Windows driver rejected a DeviceIoControl call to set TAP_WIN_IOCTL_CONFIG_DHCP_MASQ mode"); - - msg (M_INFO, "Notified TAP-Windows driver to set a DHCP IP/netmask of %s/%s on interface %s [DHCP-serv: %s, lease-time: %d]", - print_in_addr_t (tt->local, 0, &gc), - print_in_addr_t (tt->adapter_netmask, 0, &gc), - device_guid, - print_in_addr_t (ep[2], IA_NET_ORDER, &gc), - ep[3] - ); - - /* user-supplied DHCP options capability */ - if (tt->options.dhcp_options) - { - struct buffer buf = alloc_buf (256); - if (build_dhcp_options_string (&buf, &tt->options)) - { - msg (D_DHCP_OPT, "DHCP option string: %s", format_hex (BPTR (&buf), BLEN (&buf), 0, &gc)); - if (!DeviceIoControl (tt->hand, TAP_WIN_IOCTL_CONFIG_DHCP_SET_OPT, - BPTR (&buf), BLEN (&buf), - BPTR (&buf), BLEN (&buf), &len, NULL)) - msg (M_FATAL, "ERROR: The TAP-Windows driver rejected a TAP_WIN_IOCTL_CONFIG_DHCP_SET_OPT DeviceIoControl call"); - } - else - msg (M_WARN, "DHCP option string not set due to error"); - free_buf (&buf); - } -#endif + if (!DeviceIoControl(tt->hand, TAP_WIN_IOCTL_CONFIG_DHCP_MASQ, + ep, sizeof(ep), + ep, sizeof(ep), &len, NULL)) + { + msg(M_FATAL, "ERROR: The TAP-Windows driver rejected a DeviceIoControl call to set TAP_WIN_IOCTL_CONFIG_DHCP_MASQ mode"); + } + + msg(M_INFO, "Notified TAP-Windows driver to set a DHCP IP/netmask of %s/%s on interface %s [DHCP-serv: %s, lease-time: %d]", + print_in_addr_t(tt->local, 0, &gc), + print_in_addr_t(tt->adapter_netmask, 0, &gc), + device_guid, + print_in_addr_t(ep[2], IA_NET_ORDER, &gc), + ep[3] + ); + + /* user-supplied DHCP options capability */ + if (tt->options.dhcp_options) + { + struct buffer buf = alloc_buf(256); + if (build_dhcp_options_string(&buf, &tt->options)) + { + msg(D_DHCP_OPT, "DHCP option string: %s", format_hex(BPTR(&buf), BLEN(&buf), 0, &gc)); + if (!DeviceIoControl(tt->hand, TAP_WIN_IOCTL_CONFIG_DHCP_SET_OPT, + BPTR(&buf), BLEN(&buf), + BPTR(&buf), BLEN(&buf), &len, NULL)) + { + msg(M_FATAL, "ERROR: The TAP-Windows driver rejected a TAP_WIN_IOCTL_CONFIG_DHCP_SET_OPT DeviceIoControl call"); + } + } + else + { + msg(M_WARN, "DHCP option string not set due to error"); + } + free_buf(&buf); + } +#endif /* ifndef SIMULATE_DHCP_FAILED */ } - /* set driver media status to 'connected' */ - { - ULONG status = TRUE; - if (!DeviceIoControl (tt->hand, TAP_WIN_IOCTL_SET_MEDIA_STATUS, - &status, sizeof (status), - &status, sizeof (status), &len, NULL)) - msg (M_WARN, "WARNING: The TAP-Windows driver rejected a TAP_WIN_IOCTL_SET_MEDIA_STATUS DeviceIoControl call."); - } - - /* possible wait for adapter to come up */ - { - int s = tt->options.tap_sleep; - if (s > 0) - { - msg (M_INFO, "Sleeping for %d seconds...", s); - openvpn_sleep (s); - } - } - - /* possibly use IP Helper API to set IP address on adapter */ - { - const DWORD index = tt->adapter_index; - - /* flush arp cache */ - if (index != TUN_ADAPTER_INDEX_INVALID) - { - DWORD status = -1; - - if (tt->options.msg_channel) - { - ack_message_t ack; - flush_neighbors_message_t msg = { - .header = { - msg_flush_neighbors, - sizeof (flush_neighbors_message_t), - 0 }, - .family = AF_INET, - .iface = { .index = index, .name = "" } - }; - - if (!WriteFile (tt->options.msg_channel, &msg, sizeof (msg), &len, NULL) || - !ReadFile (tt->options.msg_channel, &ack, sizeof (ack), &len, NULL)) - msg (M_WARN, "TUN: could not talk to service: %s [%lu]", - strerror_win32 (GetLastError (), &gc), GetLastError ()); - - status = ack.error_number; - } + /* set driver media status to 'connected' */ + { + ULONG status = TRUE; + if (!DeviceIoControl(tt->hand, TAP_WIN_IOCTL_SET_MEDIA_STATUS, + &status, sizeof(status), + &status, sizeof(status), &len, NULL)) + { + msg(M_WARN, "WARNING: The TAP-Windows driver rejected a TAP_WIN_IOCTL_SET_MEDIA_STATUS DeviceIoControl call."); + } + } + + /* possible wait for adapter to come up */ + { + int s = tt->options.tap_sleep; + if (s > 0) + { + msg(M_INFO, "Sleeping for %d seconds...", s); + openvpn_sleep(s); + } + } + + /* possibly use IP Helper API to set IP address on adapter */ + { + const DWORD index = tt->adapter_index; + + /* flush arp cache */ + if (index != TUN_ADAPTER_INDEX_INVALID) + { + DWORD status = -1; + + if (tt->options.msg_channel) + { + ack_message_t ack; + flush_neighbors_message_t msg = { + .header = { + msg_flush_neighbors, + sizeof(flush_neighbors_message_t), + 0 + }, + .family = AF_INET, + .iface = { .index = index, .name = "" } + }; + + if (!WriteFile(tt->options.msg_channel, &msg, sizeof(msg), &len, NULL) + || !ReadFile(tt->options.msg_channel, &ack, sizeof(ack), &len, NULL)) + { + msg(M_WARN, "TUN: could not talk to service: %s [%lu]", + strerror_win32(GetLastError(), &gc), GetLastError()); + } + + status = ack.error_number; + } + else + { + status = FlushIpNetTable(index); + } + + if (status == NO_ERROR) + { + msg(M_INFO, "Successful ARP Flush on interface [%u] %s", + (unsigned int)index, + device_guid); + } + else if (status != -1) + { + msg(D_TUNTAP_INFO, "NOTE: FlushIpNetTable failed on interface [%u] %s (status=%u) : %s", + (unsigned int)index, + device_guid, + (unsigned int)status, + strerror_win32(status, &gc)); + } + } + + /* + * If the TAP-Windows driver is masquerading as a DHCP server + * make sure the TCP/IP properties for the adapter are + * set correctly. + */ + if (dhcp_masq_post) + { + /* check dhcp enable status */ + if (dhcp_status(index) == DHCP_STATUS_DISABLED) + { + msg(M_WARN, "WARNING: You have selected '--ip-win32 dynamic', which will not work unless the TAP-Windows TCP/IP properties are set to 'Obtain an IP address automatically'"); + } + + /* force an explicit DHCP lease renewal on TAP adapter? */ + if (tt->options.dhcp_pre_release) + { + dhcp_release(tt); + } + if (tt->options.dhcp_renew) + { + dhcp_renew(tt); + } + } else - status = FlushIpNetTable (index); - - if (status == NO_ERROR) - msg (M_INFO, "Successful ARP Flush on interface [%u] %s", - (unsigned int)index, - device_guid); - else if (status != -1) - msg (D_TUNTAP_INFO, "NOTE: FlushIpNetTable failed on interface [%u] %s (status=%u) : %s", - (unsigned int)index, - device_guid, - (unsigned int)status, - strerror_win32 (status, &gc)); - } + { + fork_dhcp_action(tt); + } - /* - * If the TAP-Windows driver is masquerading as a DHCP server - * make sure the TCP/IP properties for the adapter are - * set correctly. - */ - if (dhcp_masq_post) - { - /* check dhcp enable status */ - if (dhcp_status (index) == DHCP_STATUS_DISABLED) - msg (M_WARN, "WARNING: You have selected '--ip-win32 dynamic', which will not work unless the TAP-Windows TCP/IP properties are set to 'Obtain an IP address automatically'"); - - /* force an explicit DHCP lease renewal on TAP adapter? */ - if (tt->options.dhcp_pre_release) - dhcp_release (tt); - if (tt->options.dhcp_renew) - dhcp_renew (tt); - } - else - fork_dhcp_action (tt); - - if (tt->did_ifconfig_setup && tt->options.ip_win32_type == IPW32_SET_IPAPI) - { - DWORD status; - const char *error_suffix = "I am having trouble using the Windows 'IP helper API' to automatically set the IP address -- consider using other --ip-win32 methods (not 'ipapi')"; - - /* couldn't get adapter index */ - if (index == TUN_ADAPTER_INDEX_INVALID) - { - msg (M_FATAL, "ERROR: unable to get adapter index for interface %s -- %s", - device_guid, - error_suffix); - } - - /* check dhcp enable status */ - if (dhcp_status (index) == DHCP_STATUS_DISABLED) - msg (M_WARN, "NOTE: You have selected (explicitly or by default) '--ip-win32 ipapi', which has a better chance of working correctly if the TAP-Windows TCP/IP properties are set to 'Obtain an IP address automatically'"); - - /* delete previously added IP addresses which were not - correctly deleted */ - delete_temp_addresses (index); - - /* add a new IP address */ - if ((status = AddIPAddress (htonl(tt->local), - htonl(tt->adapter_netmask), - index, - &tt->ipapi_context, - &tt->ipapi_instance)) == NO_ERROR) - msg (M_INFO, "Succeeded in adding a temporary IP/netmask of %s/%s to interface %s using the Win32 IP Helper API", - print_in_addr_t (tt->local, 0, &gc), - print_in_addr_t (tt->adapter_netmask, 0, &gc), - device_guid - ); - else - msg (M_FATAL, "ERROR: AddIPAddress %s/%s failed on interface %s, index=%d, status=%u (windows error: '%s') -- %s", - print_in_addr_t (tt->local, 0, &gc), - print_in_addr_t (tt->adapter_netmask, 0, &gc), - device_guid, - (int)index, - (unsigned int)status, - strerror_win32 (status, &gc), - error_suffix); - tt->ipapi_context_defined = true; - } - } - /*netcmd_semaphore_release ();*/ - gc_free (&gc); + if (tt->did_ifconfig_setup && tt->options.ip_win32_type == IPW32_SET_IPAPI) + { + DWORD status; + const char *error_suffix = "I am having trouble using the Windows 'IP helper API' to automatically set the IP address -- consider using other --ip-win32 methods (not 'ipapi')"; + + /* couldn't get adapter index */ + if (index == TUN_ADAPTER_INDEX_INVALID) + { + msg(M_FATAL, "ERROR: unable to get adapter index for interface %s -- %s", + device_guid, + error_suffix); + } + + /* check dhcp enable status */ + if (dhcp_status(index) == DHCP_STATUS_DISABLED) + { + msg(M_WARN, "NOTE: You have selected (explicitly or by default) '--ip-win32 ipapi', which has a better chance of working correctly if the TAP-Windows TCP/IP properties are set to 'Obtain an IP address automatically'"); + } + + /* delete previously added IP addresses which were not + * correctly deleted */ + delete_temp_addresses(index); + + /* add a new IP address */ + if ((status = AddIPAddress(htonl(tt->local), + htonl(tt->adapter_netmask), + index, + &tt->ipapi_context, + &tt->ipapi_instance)) == NO_ERROR) + { + msg(M_INFO, "Succeeded in adding a temporary IP/netmask of %s/%s to interface %s using the Win32 IP Helper API", + print_in_addr_t(tt->local, 0, &gc), + print_in_addr_t(tt->adapter_netmask, 0, &gc), + device_guid + ); + } + else + { + msg(M_FATAL, "ERROR: AddIPAddress %s/%s failed on interface %s, index=%d, status=%u (windows error: '%s') -- %s", + print_in_addr_t(tt->local, 0, &gc), + print_in_addr_t(tt->adapter_netmask, 0, &gc), + device_guid, + (int)index, + (unsigned int)status, + strerror_win32(status, &gc), + error_suffix); + } + tt->ipapi_context_defined = true; + } + } + /*netcmd_semaphore_release ();*/ + gc_free(&gc); } const char * -tap_win_getinfo (const struct tuntap *tt, struct gc_arena *gc) +tap_win_getinfo(const struct tuntap *tt, struct gc_arena *gc) { - if (tt && tt->hand != NULL) + if (tt && tt->hand != NULL) { - struct buffer out = alloc_buf_gc (256, gc); - DWORD len; - if (DeviceIoControl (tt->hand, TAP_WIN_IOCTL_GET_INFO, - BSTR (&out), BCAP (&out), - BSTR (&out), BCAP (&out), - &len, NULL)) - { - return BSTR (&out); - } + struct buffer out = alloc_buf_gc(256, gc); + DWORD len; + if (DeviceIoControl(tt->hand, TAP_WIN_IOCTL_GET_INFO, + BSTR(&out), BCAP(&out), + BSTR(&out), BCAP(&out), + &len, NULL)) + { + return BSTR(&out); + } } - return NULL; + return NULL; } void -tun_show_debug (struct tuntap *tt) +tun_show_debug(struct tuntap *tt) { - if (tt && tt->hand != NULL) + if (tt && tt->hand != NULL) { - struct buffer out = alloc_buf (1024); - DWORD len; - while (DeviceIoControl (tt->hand, TAP_WIN_IOCTL_GET_LOG_LINE, - BSTR (&out), BCAP (&out), - BSTR (&out), BCAP (&out), - &len, NULL)) - { - msg (D_TAP_WIN_DEBUG, "TAP-Windows: %s", BSTR (&out)); - } - free_buf (&out); + struct buffer out = alloc_buf(1024); + DWORD len; + while (DeviceIoControl(tt->hand, TAP_WIN_IOCTL_GET_LOG_LINE, + BSTR(&out), BCAP(&out), + BSTR(&out), BCAP(&out), + &len, NULL)) + { + msg(D_TAP_WIN_DEBUG, "TAP-Windows: %s", BSTR(&out)); + } + free_buf(&out); } } void -close_tun (struct tuntap *tt) +close_tun(struct tuntap *tt) { - struct gc_arena gc = gc_new (); + struct gc_arena gc = gc_new(); - if (tt) + if (tt) { - if ( tt->did_ifconfig_ipv6_setup ) + if (tt->did_ifconfig_ipv6_setup) { - if (tt->options.msg_channel) + if (tt->options.msg_channel) { - do_address_service (false, AF_INET6, tt); - if (tt->options.dns6_len > 0) - do_dns6_service (false, tt); + do_address_service(false, AF_INET6, tt); + if (tt->options.dns6_len > 0) + { + do_dns6_service(false, tt); + } } - else + else { - const char *ifconfig_ipv6_local; - struct argv argv = argv_new (); - - /* remove route pointing to interface */ - delete_route_connected_v6_net(tt, NULL); - - /* "store=active" is needed in Windows 8(.1) to delete the - * address we added (pointed out by Cedric Tabary). - */ - - /* netsh interface ipv6 delete address \"%s\" %s */ - ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); - argv_printf (&argv, - "%s%sc interface ipv6 delete address %s %s store=active", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - tt->actual_name, - ifconfig_ipv6_local); - - netsh_command (&argv, 1, M_WARN); - - /* delete ipv6 dns servers if any were set */ - if (tt->options.dns6_len > 0) - { - argv_printf (&argv, - "%s%sc interface ipv6 delete dns %s all", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - tt->actual_name); - netsh_command (&argv, 1, M_WARN); - } - argv_reset (&argv); + const char *ifconfig_ipv6_local; + struct argv argv = argv_new(); + + /* remove route pointing to interface */ + delete_route_connected_v6_net(tt, NULL); + + /* "store=active" is needed in Windows 8(.1) to delete the + * address we added (pointed out by Cedric Tabary). + */ + + /* netsh interface ipv6 delete address \"%s\" %s */ + ifconfig_ipv6_local = print_in6_addr(tt->local_ipv6, 0, &gc); + argv_printf(&argv, + "%s%sc interface ipv6 delete address %s %s store=active", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + tt->actual_name, + ifconfig_ipv6_local); + + netsh_command(&argv, 1, M_WARN); + + /* delete ipv6 dns servers if any were set */ + if (tt->options.dns6_len > 0) + { + argv_printf(&argv, + "%s%sc interface ipv6 delete dns %s all", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + tt->actual_name); + netsh_command(&argv, 1, M_WARN); + } + argv_reset(&argv); } - } + } #if 1 - if (tt->ipapi_context_defined) - { - DWORD status; - if ((status = DeleteIPAddress (tt->ipapi_context)) != NO_ERROR) - { - msg (M_WARN, "Warning: DeleteIPAddress[%u] failed on TAP-Windows adapter, status=%u : %s", - (unsigned int)tt->ipapi_context, - (unsigned int)status, - strerror_win32 (status, &gc)); - } - } + if (tt->ipapi_context_defined) + { + DWORD status; + if ((status = DeleteIPAddress(tt->ipapi_context)) != NO_ERROR) + { + msg(M_WARN, "Warning: DeleteIPAddress[%u] failed on TAP-Windows adapter, status=%u : %s", + (unsigned int)tt->ipapi_context, + (unsigned int)status, + strerror_win32(status, &gc)); + } + } #endif - if (tt->options.dhcp_release) - dhcp_release (tt); + if (tt->options.dhcp_release) + { + dhcp_release(tt); + } - if (tt->hand != NULL) - { - dmsg (D_WIN32_IO_LOW, "Attempting CancelIO on TAP-Windows adapter"); - if (!CancelIo (tt->hand)) - msg (M_WARN | M_ERRNO, "Warning: CancelIO failed on TAP-Windows adapter"); - } + if (tt->hand != NULL) + { + dmsg(D_WIN32_IO_LOW, "Attempting CancelIO on TAP-Windows adapter"); + if (!CancelIo(tt->hand)) + { + msg(M_WARN | M_ERRNO, "Warning: CancelIO failed on TAP-Windows adapter"); + } + } - dmsg (D_WIN32_IO_LOW, "Attempting close of overlapped read event on TAP-Windows adapter"); - overlapped_io_close (&tt->reads); + dmsg(D_WIN32_IO_LOW, "Attempting close of overlapped read event on TAP-Windows adapter"); + overlapped_io_close(&tt->reads); - dmsg (D_WIN32_IO_LOW, "Attempting close of overlapped write event on TAP-Windows adapter"); - overlapped_io_close (&tt->writes); + dmsg(D_WIN32_IO_LOW, "Attempting close of overlapped write event on TAP-Windows adapter"); + overlapped_io_close(&tt->writes); - if (tt->hand != NULL) - { - dmsg (D_WIN32_IO_LOW, "Attempting CloseHandle on TAP-Windows adapter"); - if (!CloseHandle (tt->hand)) - msg (M_WARN | M_ERRNO, "Warning: CloseHandle failed on TAP-Windows adapter"); - } + if (tt->hand != NULL) + { + dmsg(D_WIN32_IO_LOW, "Attempting CloseHandle on TAP-Windows adapter"); + if (!CloseHandle(tt->hand)) + { + msg(M_WARN | M_ERRNO, "Warning: CloseHandle failed on TAP-Windows adapter"); + } + } - if (tt->actual_name) - free (tt->actual_name); + if (tt->actual_name) + { + free(tt->actual_name); + } - clear_tuntap (tt); - free (tt); + clear_tuntap(tt); + free(tt); } - gc_free (&gc); + gc_free(&gc); } /* @@ -5740,83 +6269,91 @@ close_tun (struct tuntap *tt) */ struct ipset_names { - const char *short_form; + const char *short_form; }; /* Indexed by IPW32_SET_x */ static const struct ipset_names ipset_names[] = { - {"manual"}, - {"netsh"}, - {"ipapi"}, - {"dynamic"}, - {"adaptive"} + {"manual"}, + {"netsh"}, + {"ipapi"}, + {"dynamic"}, + {"adaptive"} }; int -ascii2ipset (const char* name) +ascii2ipset(const char *name) { - int i; - ASSERT (IPW32_SET_N == SIZE (ipset_names)); - for (i = 0; i < IPW32_SET_N; ++i) - if (!strcmp (name, ipset_names[i].short_form)) - return i; - return -1; + int i; + ASSERT(IPW32_SET_N == SIZE(ipset_names)); + for (i = 0; i < IPW32_SET_N; ++i) + if (!strcmp(name, ipset_names[i].short_form)) + { + return i; + } + return -1; } const char * -ipset2ascii (int index) +ipset2ascii(int index) { - ASSERT (IPW32_SET_N == SIZE (ipset_names)); - if (index < 0 || index >= IPW32_SET_N) - return "[unknown --ip-win32 type]"; - else - return ipset_names[index].short_form; + ASSERT(IPW32_SET_N == SIZE(ipset_names)); + if (index < 0 || index >= IPW32_SET_N) + { + return "[unknown --ip-win32 type]"; + } + else + { + return ipset_names[index].short_form; + } } const char * -ipset2ascii_all (struct gc_arena *gc) +ipset2ascii_all(struct gc_arena *gc) { - struct buffer out = alloc_buf_gc (256, gc); - int i; + struct buffer out = alloc_buf_gc(256, gc); + int i; - ASSERT (IPW32_SET_N == SIZE (ipset_names)); - for (i = 0; i < IPW32_SET_N; ++i) + ASSERT(IPW32_SET_N == SIZE(ipset_names)); + for (i = 0; i < IPW32_SET_N; ++i) { - if (i) - buf_printf(&out, " "); - buf_printf(&out, "[%s]", ipset2ascii(i)); + if (i) + { + buf_printf(&out, " "); + } + buf_printf(&out, "[%s]", ipset2ascii(i)); } - return BSTR (&out); + return BSTR(&out); } #else /* generic */ void -open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) +open_tun(const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) { - open_tun_generic (dev, dev_type, dev_node, true, tt); + open_tun_generic(dev, dev_type, dev_node, true, tt); } void -close_tun (struct tuntap* tt) +close_tun(struct tuntap *tt) { - if (tt) + if (tt) { - close_tun_generic (tt); - free (tt); + close_tun_generic(tt); + free(tt); } } int -write_tun (struct tuntap* tt, uint8_t *buf, int len) +write_tun(struct tuntap *tt, uint8_t *buf, int len) { - return write (tt->fd, buf, len); + return write(tt->fd, buf, len); } int -read_tun (struct tuntap* tt, uint8_t *buf, int len) +read_tun(struct tuntap *tt, uint8_t *buf, int len) { - return read (tt->fd, buf, len); + return read(tt->fd, buf, len); } -#endif +#endif /* if defined (TARGET_ANDROID) */ |