diff options
Diffstat (limited to 'src/openvpn/route.c')
| -rw-r--r-- | src/openvpn/route.c | 5419 |
1 files changed, 2874 insertions, 2545 deletions
diff --git a/src/openvpn/route.c b/src/openvpn/route.c index fec12c1..0c93dcd 100644 --- a/src/openvpn/route.c +++ b/src/openvpn/route.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 @@ -46,77 +46,83 @@ #include "memdbg.h" #if defined(TARGET_LINUX) || defined(TARGET_ANDROID) -#include <linux/rtnetlink.h> /* RTM_GETROUTE etc. */ +#include <linux/rtnetlink.h> /* RTM_GETROUTE etc. */ #endif #ifdef _WIN32 #include "openvpn-msg.h" #define METRIC_NOT_USED ((DWORD)-1) -static bool add_route_service (const struct route_ipv4 *, const struct tuntap *); -static bool del_route_service (const struct route_ipv4 *, const struct tuntap *); -static bool add_route_ipv6_service (const struct route_ipv6 *, const struct tuntap *); -static bool del_route_ipv6_service (const struct route_ipv6 *, const struct tuntap *); +static bool add_route_service(const struct route_ipv4 *, const struct tuntap *); + +static bool del_route_service(const struct route_ipv4 *, const struct tuntap *); + +static bool add_route_ipv6_service(const struct route_ipv6 *, const struct tuntap *); + +static bool del_route_ipv6_service(const struct route_ipv6 *, const struct tuntap *); + #endif -static void delete_route (struct route_ipv4 *r, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es); +static void delete_route(struct route_ipv4 *r, const struct tuntap *tt, unsigned int flags, const struct route_gateway_info *rgi, const struct env_set *es); -static void get_bypass_addresses (struct route_bypass *rb, const unsigned int flags); +static void get_bypass_addresses(struct route_bypass *rb, const unsigned int flags); #ifdef ENABLE_DEBUG static void -print_bypass_addresses (const struct route_bypass *rb) +print_bypass_addresses(const struct route_bypass *rb) { - struct gc_arena gc = gc_new (); - int i; - for (i = 0; i < rb->n_bypass; ++i) + struct gc_arena gc = gc_new(); + int i; + for (i = 0; i < rb->n_bypass; ++i) { - msg (D_ROUTE, "ROUTE: bypass_host_route[%d]=%s", - i, - print_in_addr_t (rb->bypass[i], 0, &gc)); + msg(D_ROUTE, "ROUTE: bypass_host_route[%d]=%s", + i, + print_in_addr_t(rb->bypass[i], 0, &gc)); } - gc_free (&gc); + gc_free(&gc); } #endif static bool -add_bypass_address (struct route_bypass *rb, const in_addr_t a) +add_bypass_address(struct route_bypass *rb, const in_addr_t a) { - int i; - for (i = 0; i < rb->n_bypass; ++i) + int i; + for (i = 0; i < rb->n_bypass; ++i) { - if (a == rb->bypass[i]) /* avoid duplicates */ - return true; + if (a == rb->bypass[i]) /* avoid duplicates */ + { + return true; + } } - if (rb->n_bypass < N_ROUTE_BYPASS) + if (rb->n_bypass < N_ROUTE_BYPASS) { - rb->bypass[rb->n_bypass++] = a; - return true; + rb->bypass[rb->n_bypass++] = a; + return true; } - else + else { - return false; + return false; } } struct route_option_list * -new_route_option_list (struct gc_arena *a) +new_route_option_list(struct gc_arena *a) { - struct route_option_list *ret; - ALLOC_OBJ_CLEAR_GC (ret, struct route_option_list, a); - ret->gc = a; - return ret; + struct route_option_list *ret; + ALLOC_OBJ_CLEAR_GC(ret, struct route_option_list, a); + ret->gc = a; + return ret; } struct route_ipv6_option_list * -new_route_ipv6_option_list (struct gc_arena *a) +new_route_ipv6_option_list(struct gc_arena *a) { - struct route_ipv6_option_list *ret; - ALLOC_OBJ_CLEAR_GC (ret, struct route_ipv6_option_list, a); - ret->gc = a; - return ret; + struct route_ipv6_option_list *ret; + ALLOC_OBJ_CLEAR_GC(ret, struct route_ipv6_option_list, a); + ret->gc = a; + return ret; } /* @@ -127,544 +133,594 @@ new_route_ipv6_option_list (struct gc_arena *a) * the c2->gc so they get freed immediately after a reconnect. */ struct route_option_list * -clone_route_option_list (const struct route_option_list *src, struct gc_arena *a) +clone_route_option_list(const struct route_option_list *src, struct gc_arena *a) { - struct route_option_list *ret; - ALLOC_OBJ_GC (ret, struct route_option_list, a); - *ret = *src; - return ret; + struct route_option_list *ret; + ALLOC_OBJ_GC(ret, struct route_option_list, a); + *ret = *src; + return ret; } struct route_ipv6_option_list * -clone_route_ipv6_option_list (const struct route_ipv6_option_list *src, struct gc_arena *a) +clone_route_ipv6_option_list(const struct route_ipv6_option_list *src, struct gc_arena *a) { - struct route_ipv6_option_list *ret; - ALLOC_OBJ_GC (ret, struct route_ipv6_option_list, a); - *ret = *src; - return ret; + struct route_ipv6_option_list *ret; + ALLOC_OBJ_GC(ret, struct route_ipv6_option_list, a); + *ret = *src; + return ret; } void -copy_route_option_list (struct route_option_list *dest, const struct route_option_list *src, struct gc_arena *a) +copy_route_option_list(struct route_option_list *dest, const struct route_option_list *src, struct gc_arena *a) { - *dest = *src; - dest->gc = a; + *dest = *src; + dest->gc = a; } void -copy_route_ipv6_option_list (struct route_ipv6_option_list *dest, - const struct route_ipv6_option_list *src, - struct gc_arena *a) +copy_route_ipv6_option_list(struct route_ipv6_option_list *dest, + const struct route_ipv6_option_list *src, + struct gc_arena *a) { - *dest = *src; - dest->gc = a; + *dest = *src; + dest->gc = a; } static const char * -route_string (const struct route_ipv4 *r, struct gc_arena *gc) +route_string(const struct route_ipv4 *r, struct gc_arena *gc) { - struct buffer out = alloc_buf_gc (256, gc); - buf_printf (&out, "ROUTE network %s netmask %s gateway %s", - print_in_addr_t (r->network, 0, gc), - print_in_addr_t (r->netmask, 0, gc), - print_in_addr_t (r->gateway, 0, gc) - ); - if (r->flags & RT_METRIC_DEFINED) - buf_printf (&out, " metric %d", r->metric); - return BSTR (&out); + struct buffer out = alloc_buf_gc(256, gc); + buf_printf(&out, "ROUTE network %s netmask %s gateway %s", + print_in_addr_t(r->network, 0, gc), + print_in_addr_t(r->netmask, 0, gc), + print_in_addr_t(r->gateway, 0, gc) + ); + if (r->flags & RT_METRIC_DEFINED) + { + buf_printf(&out, " metric %d", r->metric); + } + return BSTR(&out); } static bool -is_route_parm_defined (const char *parm) +is_route_parm_defined(const char *parm) { - if (!parm) - return false; - if (!strcmp (parm, "default")) - return false; - return true; + if (!parm) + { + return false; + } + if (!strcmp(parm, "default")) + { + return false; + } + return true; } static void -setenv_route_addr (struct env_set *es, const char *key, const in_addr_t addr, int i) +setenv_route_addr(struct env_set *es, const char *key, const in_addr_t addr, int i) { - struct gc_arena gc = gc_new (); - struct buffer name = alloc_buf_gc (256, &gc); - if (i >= 0) - buf_printf (&name, "route_%s_%d", key, i); - else - buf_printf (&name, "route_%s", key); - setenv_str (es, BSTR (&name), print_in_addr_t (addr, 0, &gc)); - gc_free (&gc); + struct gc_arena gc = gc_new(); + struct buffer name = alloc_buf_gc(256, &gc); + if (i >= 0) + { + buf_printf(&name, "route_%s_%d", key, i); + } + else + { + buf_printf(&name, "route_%s", key); + } + setenv_str(es, BSTR(&name), print_in_addr_t(addr, 0, &gc)); + gc_free(&gc); } static bool -get_special_addr (const struct route_list *rl, - const char *string, - in_addr_t *out, - bool *status) -{ - if (status) - *status = true; - if (!strcmp (string, "vpn_gateway")) - { - if (rl) - { - if (rl->spec.flags & RTSA_REMOTE_ENDPOINT) - *out = rl->spec.remote_endpoint; - else - { - msg (M_INFO, PACKAGE_NAME " ROUTE: vpn_gateway undefined"); - if (status) - *status = false; - } - } - return true; - } - else if (!strcmp (string, "net_gateway")) - { - if (rl) - { - if (rl->rgi.flags & RGI_ADDR_DEFINED) - *out = rl->rgi.gateway.addr; - else - { - msg (M_INFO, PACKAGE_NAME " ROUTE: net_gateway undefined -- unable to get default gateway from system"); - if (status) - *status = false; - } - } - return true; - } - else if (!strcmp (string, "remote_host")) - { - if (rl) - { - if (rl->spec.flags & RTSA_REMOTE_HOST) - *out = rl->spec.remote_host; - else - { - msg (M_INFO, PACKAGE_NAME " ROUTE: remote_host undefined"); - if (status) - *status = false; - } - } - return true; - } - return false; +get_special_addr(const struct route_list *rl, + const char *string, + in_addr_t *out, + bool *status) +{ + if (status) + { + *status = true; + } + if (!strcmp(string, "vpn_gateway")) + { + if (rl) + { + if (rl->spec.flags & RTSA_REMOTE_ENDPOINT) + { + *out = rl->spec.remote_endpoint; + } + else + { + msg(M_INFO, PACKAGE_NAME " ROUTE: vpn_gateway undefined"); + if (status) + { + *status = false; + } + } + } + return true; + } + else if (!strcmp(string, "net_gateway")) + { + if (rl) + { + if (rl->rgi.flags & RGI_ADDR_DEFINED) + { + *out = rl->rgi.gateway.addr; + } + else + { + msg(M_INFO, PACKAGE_NAME " ROUTE: net_gateway undefined -- unable to get default gateway from system"); + if (status) + { + *status = false; + } + } + } + return true; + } + else if (!strcmp(string, "remote_host")) + { + if (rl) + { + if (rl->spec.flags & RTSA_REMOTE_HOST) + { + *out = rl->spec.remote_host; + } + else + { + msg(M_INFO, PACKAGE_NAME " ROUTE: remote_host undefined"); + if (status) + { + *status = false; + } + } + } + return true; + } + return false; } bool -is_special_addr (const char *addr_str) +is_special_addr(const char *addr_str) { - if (addr_str) - return get_special_addr (NULL, addr_str, NULL, NULL); - else - return false; + if (addr_str) + { + return get_special_addr(NULL, addr_str, NULL, NULL); + } + else + { + return false; + } } static bool -init_route (struct route_ipv4 *r, - struct addrinfo **network_list, - const struct route_option *ro, - const struct route_list *rl) +init_route(struct route_ipv4 *r, + struct addrinfo **network_list, + const struct route_option *ro, + const struct route_list *rl) { - const in_addr_t default_netmask = IPV4_NETMASK_HOST; - bool status; - int ret; - struct in_addr special; + const in_addr_t default_netmask = IPV4_NETMASK_HOST; + bool status; + int ret; + struct in_addr special; - CLEAR (*r); - r->option = ro; + CLEAR(*r); + r->option = ro; - /* network */ + /* network */ - if (!is_route_parm_defined (ro->network)) + if (!is_route_parm_defined(ro->network)) { - goto fail; + goto fail; } - /* get_special_addr replaces specialaddr with a special ip addr - like gw. getaddrinfo is called to convert a a addrinfo struct */ + /* get_special_addr replaces specialaddr with a special ip addr + * like gw. getaddrinfo is called to convert a a addrinfo struct */ - if(get_special_addr (rl, ro->network, (in_addr_t *) &special.s_addr, &status)) + if (get_special_addr(rl, ro->network, (in_addr_t *) &special.s_addr, &status)) { - special.s_addr = htonl(special.s_addr); - ret = openvpn_getaddrinfo(0, inet_ntoa(special), NULL, 0, NULL, - AF_INET, network_list); + special.s_addr = htonl(special.s_addr); + ret = openvpn_getaddrinfo(0, inet_ntoa(special), NULL, 0, NULL, + AF_INET, network_list); + } + else + { + ret = openvpn_getaddrinfo(GETADDR_RESOLVE | GETADDR_WARN_ON_SIGNAL, + ro->network, NULL, 0, NULL, AF_INET, network_list); } - else - ret = openvpn_getaddrinfo(GETADDR_RESOLVE | GETADDR_WARN_ON_SIGNAL, - ro->network, NULL, 0, NULL, AF_INET, network_list); - status = (ret == 0); + status = (ret == 0); - if (!status) - goto fail; + if (!status) + { + goto fail; + } - /* netmask */ + /* netmask */ - if (is_route_parm_defined (ro->netmask)) + if (is_route_parm_defined(ro->netmask)) { - r->netmask = getaddr ( - GETADDR_HOST_ORDER - | GETADDR_WARN_ON_SIGNAL, - ro->netmask, - 0, - &status, - NULL); - if (!status) - goto fail; + r->netmask = getaddr( + GETADDR_HOST_ORDER + | GETADDR_WARN_ON_SIGNAL, + ro->netmask, + 0, + &status, + NULL); + if (!status) + { + goto fail; + } + } + else + { + r->netmask = default_netmask; } - else - r->netmask = default_netmask; - /* gateway */ + /* gateway */ - if (is_route_parm_defined (ro->gateway)) + if (is_route_parm_defined(ro->gateway)) { - if (!get_special_addr (rl, ro->gateway, &r->gateway, &status)) - { - r->gateway = getaddr ( - GETADDR_RESOLVE - | GETADDR_HOST_ORDER - | GETADDR_WARN_ON_SIGNAL, - ro->gateway, - 0, - &status, - NULL); - } - if (!status) - goto fail; + if (!get_special_addr(rl, ro->gateway, &r->gateway, &status)) + { + r->gateway = getaddr( + GETADDR_RESOLVE + | GETADDR_HOST_ORDER + | GETADDR_WARN_ON_SIGNAL, + ro->gateway, + 0, + &status, + NULL); + } + if (!status) + { + goto fail; + } } - else + else { - if (rl->spec.flags & RTSA_REMOTE_ENDPOINT) - r->gateway = rl->spec.remote_endpoint; - else - { - msg (M_WARN, PACKAGE_NAME " ROUTE: " PACKAGE_NAME " needs a gateway parameter for a --route option and no default was specified by either --route-gateway or --ifconfig options"); - goto fail; - } + if (rl->spec.flags & RTSA_REMOTE_ENDPOINT) + { + r->gateway = rl->spec.remote_endpoint; + } + else + { + msg(M_WARN, PACKAGE_NAME " ROUTE: " PACKAGE_NAME " needs a gateway parameter for a --route option and no default was specified by either --route-gateway or --ifconfig options"); + goto fail; + } } - /* metric */ + /* metric */ - r->metric = 0; - if (is_route_parm_defined (ro->metric)) + r->metric = 0; + if (is_route_parm_defined(ro->metric)) { - r->metric = atoi (ro->metric); - if (r->metric < 0) - { - msg (M_WARN, PACKAGE_NAME " ROUTE: route metric for network %s (%s) must be >= 0", - ro->network, - ro->metric); - goto fail; - } - r->flags |= RT_METRIC_DEFINED; + r->metric = atoi(ro->metric); + if (r->metric < 0) + { + msg(M_WARN, PACKAGE_NAME " ROUTE: route metric for network %s (%s) must be >= 0", + ro->network, + ro->metric); + goto fail; + } + r->flags |= RT_METRIC_DEFINED; } - else if (rl->spec.flags & RTSA_DEFAULT_METRIC) + else if (rl->spec.flags & RTSA_DEFAULT_METRIC) { - r->metric = rl->spec.default_metric; - r->flags |= RT_METRIC_DEFINED; + r->metric = rl->spec.default_metric; + r->flags |= RT_METRIC_DEFINED; } - r->flags |= RT_DEFINED; + r->flags |= RT_DEFINED; - return true; + return true; - fail: - msg (M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve route for host/network: %s", - ro->network); - return false; +fail: + msg(M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve route for host/network: %s", + ro->network); + return false; } static bool -init_route_ipv6 (struct route_ipv6 *r6, - const struct route_ipv6_option *r6o, - const struct route_ipv6_list *rl6 ) +init_route_ipv6(struct route_ipv6 *r6, + const struct route_ipv6_option *r6o, + const struct route_ipv6_list *rl6 ) { - CLEAR (*r6); + CLEAR(*r6); - if ( !get_ipv6_addr( r6o->prefix, &r6->network, &r6->netbits, M_WARN )) - goto fail; + if (!get_ipv6_addr( r6o->prefix, &r6->network, &r6->netbits, M_WARN )) + { + goto fail; + } - /* gateway */ - if (is_route_parm_defined (r6o->gateway)) + /* gateway */ + if (is_route_parm_defined(r6o->gateway)) { - if ( inet_pton( AF_INET6, r6o->gateway, &r6->gateway ) != 1 ) + if (inet_pton( AF_INET6, r6o->gateway, &r6->gateway ) != 1) { - msg( M_WARN, PACKAGE_NAME "ROUTE6: cannot parse gateway spec '%s'", r6o->gateway ); + msg( M_WARN, PACKAGE_NAME "ROUTE6: cannot parse gateway spec '%s'", r6o->gateway ); } } - else if (rl6->spec_flags & RTSA_REMOTE_ENDPOINT) + else if (rl6->spec_flags & RTSA_REMOTE_ENDPOINT) { - r6->gateway = rl6->remote_endpoint_ipv6; + r6->gateway = rl6->remote_endpoint_ipv6; } - else + else { - msg (M_WARN, PACKAGE_NAME " ROUTE6: " PACKAGE_NAME " needs a gateway parameter for a --route-ipv6 option and no default was specified by either --route-ipv6-gateway or --ifconfig-ipv6 options"); - goto fail; + msg(M_WARN, PACKAGE_NAME " ROUTE6: " PACKAGE_NAME " needs a gateway parameter for a --route-ipv6 option and no default was specified by either --route-ipv6-gateway or --ifconfig-ipv6 options"); + goto fail; } - /* metric */ + /* metric */ - r6->metric = -1; - if (is_route_parm_defined (r6o->metric)) + r6->metric = -1; + if (is_route_parm_defined(r6o->metric)) { - r6->metric = atoi (r6o->metric); - if (r6->metric < 0) - { - msg (M_WARN, PACKAGE_NAME " ROUTE: route metric for network %s (%s) must be >= 0", - r6o->prefix, - r6o->metric); - goto fail; - } - r6->flags |= RT_METRIC_DEFINED; + r6->metric = atoi(r6o->metric); + if (r6->metric < 0) + { + msg(M_WARN, PACKAGE_NAME " ROUTE: route metric for network %s (%s) must be >= 0", + r6o->prefix, + r6o->metric); + goto fail; + } + r6->flags |= RT_METRIC_DEFINED; } - else if (rl6->spec_flags & RTSA_DEFAULT_METRIC) + else if (rl6->spec_flags & RTSA_DEFAULT_METRIC) { - r6->metric = rl6->default_metric; - r6->flags |= RT_METRIC_DEFINED; + r6->metric = rl6->default_metric; + r6->flags |= RT_METRIC_DEFINED; } - r6->flags |= RT_DEFINED; + r6->flags |= RT_DEFINED; - return true; + return true; - fail: - msg (M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve route for host/network: %s", - r6o->prefix); - return false; +fail: + msg(M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve route for host/network: %s", + r6o->prefix); + return false; } void -add_route_to_option_list (struct route_option_list *l, - const char *network, - const char *netmask, - const char *gateway, - const char *metric) +add_route_to_option_list(struct route_option_list *l, + const char *network, + const char *netmask, + const char *gateway, + const char *metric) { - struct route_option *ro; - ALLOC_OBJ_GC (ro, struct route_option, l->gc); - ro->network = network; - ro->netmask = netmask; - ro->gateway = gateway; - ro->metric = metric; - ro->next = l->routes; - l->routes = ro; + struct route_option *ro; + ALLOC_OBJ_GC(ro, struct route_option, l->gc); + ro->network = network; + ro->netmask = netmask; + ro->gateway = gateway; + ro->metric = metric; + ro->next = l->routes; + l->routes = ro; } void -add_route_ipv6_to_option_list (struct route_ipv6_option_list *l, - const char *prefix, - const char *gateway, - const char *metric) +add_route_ipv6_to_option_list(struct route_ipv6_option_list *l, + const char *prefix, + const char *gateway, + const char *metric) { - struct route_ipv6_option *ro; - ALLOC_OBJ_GC (ro, struct route_ipv6_option, l->gc); - ro->prefix = prefix; - ro->gateway = gateway; - ro->metric = metric; - ro->next = l->routes_ipv6; - l->routes_ipv6 = ro; + struct route_ipv6_option *ro; + ALLOC_OBJ_GC(ro, struct route_ipv6_option, l->gc); + ro->prefix = prefix; + ro->gateway = gateway; + ro->metric = metric; + ro->next = l->routes_ipv6; + l->routes_ipv6 = ro; } void -clear_route_list (struct route_list *rl) +clear_route_list(struct route_list *rl) { - gc_free (&rl->gc); - CLEAR (*rl); + gc_free(&rl->gc); + CLEAR(*rl); } void -clear_route_ipv6_list (struct route_ipv6_list *rl6) +clear_route_ipv6_list(struct route_ipv6_list *rl6) { - gc_free (&rl6->gc); - CLEAR (*rl6); + gc_free(&rl6->gc); + CLEAR(*rl6); } void -route_list_add_vpn_gateway (struct route_list *rl, - struct env_set *es, - const in_addr_t addr) +route_list_add_vpn_gateway(struct route_list *rl, + struct env_set *es, + const in_addr_t addr) { - ASSERT(rl); - rl->spec.remote_endpoint = addr; - rl->spec.flags |= RTSA_REMOTE_ENDPOINT; - setenv_route_addr (es, "vpn_gateway", rl->spec.remote_endpoint, -1); + ASSERT(rl); + rl->spec.remote_endpoint = addr; + rl->spec.flags |= RTSA_REMOTE_ENDPOINT; + setenv_route_addr(es, "vpn_gateway", rl->spec.remote_endpoint, -1); } static void -add_block_local_item (struct route_list *rl, - const struct route_gateway_address *gateway, - in_addr_t target) +add_block_local_item(struct route_list *rl, + const struct route_gateway_address *gateway, + in_addr_t target) { - const int rgi_needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED); - if ((rl->rgi.flags & rgi_needed) == rgi_needed - && rl->rgi.gateway.netmask < 0xFFFFFFFF) + const int rgi_needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED); + if ((rl->rgi.flags & rgi_needed) == rgi_needed + && rl->rgi.gateway.netmask < 0xFFFFFFFF) { - struct route_ipv4 *r1, *r2; - unsigned int l2; - - ALLOC_OBJ_GC (r1, struct route_ipv4, &rl->gc); - ALLOC_OBJ_GC (r2, struct route_ipv4, &rl->gc); - - /* split a route into two smaller blocking routes, and direct them to target */ - l2 = ((~gateway->netmask)+1)>>1; - r1->flags = RT_DEFINED; - r1->gateway = target; - r1->network = gateway->addr & gateway->netmask; - r1->netmask = ~(l2-1); - r1->next = rl->routes; - rl->routes = r1; - - *r2 = *r1; - r2->network += l2; - r2->next = rl->routes; - rl->routes = r2; + struct route_ipv4 *r1, *r2; + unsigned int l2; + + ALLOC_OBJ_GC(r1, struct route_ipv4, &rl->gc); + ALLOC_OBJ_GC(r2, struct route_ipv4, &rl->gc); + + /* split a route into two smaller blocking routes, and direct them to target */ + l2 = ((~gateway->netmask)+1)>>1; + r1->flags = RT_DEFINED; + r1->gateway = target; + r1->network = gateway->addr & gateway->netmask; + r1->netmask = ~(l2-1); + r1->next = rl->routes; + rl->routes = r1; + + *r2 = *r1; + r2->network += l2; + r2->next = rl->routes; + rl->routes = r2; } } static void -add_block_local (struct route_list *rl) +add_block_local(struct route_list *rl) { - const int rgi_needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED); - if ((rl->flags & RG_BLOCK_LOCAL) - && (rl->rgi.flags & rgi_needed) == rgi_needed - && (rl->spec.flags & RTSA_REMOTE_ENDPOINT) - && rl->spec.remote_host_local != TLA_LOCAL) + const int rgi_needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED); + if ((rl->flags & RG_BLOCK_LOCAL) + && (rl->rgi.flags & rgi_needed) == rgi_needed + && (rl->spec.flags & RTSA_REMOTE_ENDPOINT) + && rl->spec.remote_host_local != TLA_LOCAL) { - size_t i; + size_t i; #ifndef TARGET_ANDROID - /* add bypass for gateway addr */ - add_bypass_address (&rl->spec.bypass, rl->rgi.gateway.addr); + /* add bypass for gateway addr */ + add_bypass_address(&rl->spec.bypass, rl->rgi.gateway.addr); #endif - /* block access to local subnet */ - add_block_local_item (rl, &rl->rgi.gateway, rl->spec.remote_endpoint); + /* block access to local subnet */ + add_block_local_item(rl, &rl->rgi.gateway, rl->spec.remote_endpoint); - /* process additional subnets on gateway interface */ - for (i = 0; i < rl->rgi.n_addrs; ++i) - { - const struct route_gateway_address *gwa = &rl->rgi.addrs[i]; - /* omit the add/subnet in &rl->rgi which we processed above */ - if (!((rl->rgi.gateway.addr & rl->rgi.gateway.netmask) == (gwa->addr & gwa->netmask) - && rl->rgi.gateway.netmask == gwa->netmask)) - add_block_local_item (rl, gwa, rl->spec.remote_endpoint); - } + /* process additional subnets on gateway interface */ + for (i = 0; i < rl->rgi.n_addrs; ++i) + { + const struct route_gateway_address *gwa = &rl->rgi.addrs[i]; + /* omit the add/subnet in &rl->rgi which we processed above */ + if (!((rl->rgi.gateway.addr & rl->rgi.gateway.netmask) == (gwa->addr & gwa->netmask) + && rl->rgi.gateway.netmask == gwa->netmask)) + { + add_block_local_item(rl, gwa, rl->spec.remote_endpoint); + } + } } } bool -init_route_list (struct route_list *rl, - const struct route_option_list *opt, - const char *remote_endpoint, - int default_metric, - in_addr_t remote_host, - struct env_set *es) +init_route_list(struct route_list *rl, + const struct route_option_list *opt, + const char *remote_endpoint, + int default_metric, + in_addr_t remote_host, + struct env_set *es) { - struct gc_arena gc = gc_new (); - bool ret = true; + struct gc_arena gc = gc_new(); + bool ret = true; - clear_route_list (rl); + clear_route_list(rl); - rl->flags = opt->flags; + rl->flags = opt->flags; - if (remote_host) + if (remote_host) { - rl->spec.remote_host = remote_host; - rl->spec.flags |= RTSA_REMOTE_HOST; + rl->spec.remote_host = remote_host; + rl->spec.flags |= RTSA_REMOTE_HOST; } - if (default_metric) + if (default_metric) { - rl->spec.default_metric = default_metric; - rl->spec.flags |= RTSA_DEFAULT_METRIC; + rl->spec.default_metric = default_metric; + rl->spec.flags |= RTSA_DEFAULT_METRIC; } - get_default_gateway (&rl->rgi); - if (rl->rgi.flags & RGI_ADDR_DEFINED) + get_default_gateway(&rl->rgi); + if (rl->rgi.flags & RGI_ADDR_DEFINED) { - setenv_route_addr (es, "net_gateway", rl->rgi.gateway.addr, -1); + setenv_route_addr(es, "net_gateway", rl->rgi.gateway.addr, -1); #if defined(ENABLE_DEBUG) && !defined(ENABLE_SMALL) - print_default_gateway (D_ROUTE, &rl->rgi, NULL); + print_default_gateway(D_ROUTE, &rl->rgi, NULL); #endif } - else + else { - dmsg (D_ROUTE, "ROUTE: default_gateway=UNDEF"); + dmsg(D_ROUTE, "ROUTE: default_gateway=UNDEF"); } - if (rl->spec.flags & RTSA_REMOTE_HOST) - rl->spec.remote_host_local = test_local_addr (remote_host, &rl->rgi); - - if (is_route_parm_defined (remote_endpoint)) + if (rl->spec.flags & RTSA_REMOTE_HOST) { - bool defined = false; - rl->spec.remote_endpoint = getaddr ( - GETADDR_RESOLVE - | GETADDR_HOST_ORDER - | GETADDR_WARN_ON_SIGNAL, - remote_endpoint, - 0, - &defined, - NULL); + rl->spec.remote_host_local = test_local_addr(remote_host, &rl->rgi); + } - if (defined) - { - setenv_route_addr (es, "vpn_gateway", rl->spec.remote_endpoint, -1); - rl->spec.flags |= RTSA_REMOTE_ENDPOINT; - } - else - { - msg (M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve default gateway: %s", - remote_endpoint); - ret = false; - } + if (is_route_parm_defined(remote_endpoint)) + { + bool defined = false; + rl->spec.remote_endpoint = getaddr( + GETADDR_RESOLVE + | GETADDR_HOST_ORDER + | GETADDR_WARN_ON_SIGNAL, + remote_endpoint, + 0, + &defined, + NULL); + + if (defined) + { + setenv_route_addr(es, "vpn_gateway", rl->spec.remote_endpoint, -1); + rl->spec.flags |= RTSA_REMOTE_ENDPOINT; + } + else + { + msg(M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve default gateway: %s", + remote_endpoint); + ret = false; + } } - if (rl->flags & RG_ENABLE) + if (rl->flags & RG_ENABLE) { - add_block_local (rl); - get_bypass_addresses (&rl->spec.bypass, rl->flags); + add_block_local(rl); + get_bypass_addresses(&rl->spec.bypass, rl->flags); #ifdef ENABLE_DEBUG - print_bypass_addresses (&rl->spec.bypass); + print_bypass_addresses(&rl->spec.bypass); #endif } - /* parse the routes from opt to rl */ - { - struct route_option *ro; - for (ro = opt->routes; ro; ro = ro->next) - { - struct addrinfo* netlist = NULL; - struct route_ipv4 r; - - if (!init_route (&r, &netlist, ro, rl)) - ret = false; - else - { - struct addrinfo* curele; - for (curele = netlist; curele; curele = curele->ai_next) - { - struct route_ipv4 *new; - ALLOC_OBJ_GC (new, struct route_ipv4, &rl->gc); - *new = r; - new->network = ntohl (((struct sockaddr_in*)curele->ai_addr)->sin_addr.s_addr); - new->next = rl->routes; - rl->routes = new; - } - } - if (netlist) - gc_addspecial(netlist, &gc_freeaddrinfo_callback, &gc); - } - } - - gc_free (&gc); - return ret; + /* parse the routes from opt to rl */ + { + struct route_option *ro; + for (ro = opt->routes; ro; ro = ro->next) + { + struct addrinfo *netlist = NULL; + struct route_ipv4 r; + + if (!init_route(&r, &netlist, ro, rl)) + { + ret = false; + } + else + { + struct addrinfo *curele; + for (curele = netlist; curele; curele = curele->ai_next) + { + struct route_ipv4 *new; + ALLOC_OBJ_GC(new, struct route_ipv4, &rl->gc); + *new = r; + new->network = ntohl(((struct sockaddr_in *)curele->ai_addr)->sin_addr.s_addr); + new->next = rl->routes; + rl->routes = new; + } + } + if (netlist) + { + gc_addspecial(netlist, &gc_freeaddrinfo_callback, &gc); + } + } + } + + gc_free(&gc); + return ret; } /* check whether an IPv6 host address is covered by a given route_ipv6 @@ -673,657 +729,711 @@ init_route_list (struct route_list *rl, */ static bool route_ipv6_match_host( const struct route_ipv6 *r6, - const struct in6_addr *host ) + const struct in6_addr *host ) { unsigned int bits = r6->netbits; int i; unsigned int mask; - if ( bits>128 ) - return false; + if (bits>128) + { + return false; + } - for( i=0; bits >= 8; i++, bits -= 8 ) + for (i = 0; bits >= 8; i++, bits -= 8) { - if ( r6->network.s6_addr[i] != host->s6_addr[i] ) - return false; + if (r6->network.s6_addr[i] != host->s6_addr[i]) + { + return false; + } } - if ( bits == 0 ) - return true; + if (bits == 0) + { + return true; + } mask = 0xff << (8-bits); if ( (r6->network.s6_addr[i] & mask) == (host->s6_addr[i] & mask )) - return true; + { + return true; + } return false; } bool -init_route_ipv6_list (struct route_ipv6_list *rl6, - const struct route_ipv6_option_list *opt6, - const char *remote_endpoint, - int default_metric, - const struct in6_addr *remote_host_ipv6, - struct env_set *es) +init_route_ipv6_list(struct route_ipv6_list *rl6, + const struct route_ipv6_option_list *opt6, + const char *remote_endpoint, + int default_metric, + const struct in6_addr *remote_host_ipv6, + struct env_set *es) { - struct gc_arena gc = gc_new (); - bool ret = true; - bool need_remote_ipv6_route; + struct gc_arena gc = gc_new(); + bool ret = true; + bool need_remote_ipv6_route; - clear_route_ipv6_list (rl6); + clear_route_ipv6_list(rl6); - rl6->flags = opt6->flags; + rl6->flags = opt6->flags; - if (remote_host_ipv6) + if (remote_host_ipv6) { - rl6->remote_host_ipv6 = *remote_host_ipv6; - rl6->spec_flags |= RTSA_REMOTE_HOST; + rl6->remote_host_ipv6 = *remote_host_ipv6; + rl6->spec_flags |= RTSA_REMOTE_HOST; } - if (default_metric >= 0 ) + if (default_metric >= 0) { - rl6->default_metric = default_metric; - rl6->spec_flags |= RTSA_DEFAULT_METRIC; + rl6->default_metric = default_metric; + rl6->spec_flags |= RTSA_DEFAULT_METRIC; } - msg (D_ROUTE, "GDG6: remote_host_ipv6=%s", - remote_host_ipv6? print_in6_addr (*remote_host_ipv6, 0, &gc): "n/a" ); + msg(D_ROUTE, "GDG6: remote_host_ipv6=%s", + remote_host_ipv6 ? print_in6_addr(*remote_host_ipv6, 0, &gc) : "n/a" ); - get_default_gateway_ipv6 (&rl6->rgi6, remote_host_ipv6); - if (rl6->rgi6.flags & RGI_ADDR_DEFINED) + get_default_gateway_ipv6(&rl6->rgi6, remote_host_ipv6); + if (rl6->rgi6.flags & RGI_ADDR_DEFINED) { - setenv_str (es, "net_gateway_ipv6", print_in6_addr (rl6->rgi6.gateway.addr_ipv6, 0, &gc)); + setenv_str(es, "net_gateway_ipv6", print_in6_addr(rl6->rgi6.gateway.addr_ipv6, 0, &gc)); #if defined(ENABLE_DEBUG) && !defined(ENABLE_SMALL) - print_default_gateway (D_ROUTE, NULL, &rl6->rgi6); + print_default_gateway(D_ROUTE, NULL, &rl6->rgi6); #endif } - else + else { - dmsg (D_ROUTE, "ROUTE6: default_gateway=UNDEF"); + dmsg(D_ROUTE, "ROUTE6: default_gateway=UNDEF"); } - if ( is_route_parm_defined( remote_endpoint )) + if (is_route_parm_defined( remote_endpoint )) { - if ( inet_pton( AF_INET6, remote_endpoint, - &rl6->remote_endpoint_ipv6) == 1 ) + if (inet_pton( AF_INET6, remote_endpoint, + &rl6->remote_endpoint_ipv6) == 1) + { + rl6->spec_flags |= RTSA_REMOTE_ENDPOINT; + } + else { - rl6->spec_flags |= RTSA_REMOTE_ENDPOINT; + msg(M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve VPN endpoint: %s", remote_endpoint); + ret = false; } - else - { - msg (M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve VPN endpoint: %s", remote_endpoint); - ret = false; - } } - /* parse the routes from opt6 to rl6 - * discovering potential overlaps with remote_host_ipv6 in the process - */ - need_remote_ipv6_route = false; + /* parse the routes from opt6 to rl6 + * discovering potential overlaps with remote_host_ipv6 in the process + */ + need_remote_ipv6_route = false; - { - struct route_ipv6_option *ro6; - for (ro6 = opt6->routes_ipv6; ro6; ro6 = ro6->next) - { - struct route_ipv6 *r6; - ALLOC_OBJ_GC (r6, struct route_ipv6, &rl6->gc); - if (!init_route_ipv6 (r6, ro6, rl6)) - ret = false; - else - { - r6->next = rl6->routes_ipv6; - rl6->routes_ipv6 = r6; + { + struct route_ipv6_option *ro6; + for (ro6 = opt6->routes_ipv6; ro6; ro6 = ro6->next) + { + struct route_ipv6 *r6; + ALLOC_OBJ_GC(r6, struct route_ipv6, &rl6->gc); + if (!init_route_ipv6(r6, ro6, rl6)) + { + ret = false; + } + else + { + r6->next = rl6->routes_ipv6; + rl6->routes_ipv6 = r6; #ifndef TARGET_ANDROID - /* On Android the VPNService protect function call will take of - * avoiding routing loops, so ignore this part and let - * need_remote_ipv6_route always evaluate to false - */ - if ( remote_host_ipv6 && - route_ipv6_match_host( r6, remote_host_ipv6 ) ) - { - need_remote_ipv6_route = true; - msg (D_ROUTE, "ROUTE6: %s/%d overlaps IPv6 remote %s, adding host route to VPN endpoint", - print_in6_addr (r6->network, 0, &gc), r6->netbits, - print_in6_addr (*remote_host_ipv6, 0, &gc)); - } + /* On Android the VPNService protect function call will take of + * avoiding routing loops, so ignore this part and let + * need_remote_ipv6_route always evaluate to false + */ + if (remote_host_ipv6 + && route_ipv6_match_host( r6, remote_host_ipv6 ) ) + { + need_remote_ipv6_route = true; + msg(D_ROUTE, "ROUTE6: %s/%d overlaps IPv6 remote %s, adding host route to VPN endpoint", + print_in6_addr(r6->network, 0, &gc), r6->netbits, + print_in6_addr(*remote_host_ipv6, 0, &gc)); + } #endif - } - } - } + } + } + } - /* add VPN server host route if needed */ - if ( need_remote_ipv6_route ) + /* add VPN server host route if needed */ + if (need_remote_ipv6_route) { - if ( (rl6->rgi6.flags & (RGI_ADDR_DEFINED|RGI_IFACE_DEFINED) ) == - (RGI_ADDR_DEFINED|RGI_IFACE_DEFINED) ) + if ( (rl6->rgi6.flags & (RGI_ADDR_DEFINED|RGI_IFACE_DEFINED) ) == + (RGI_ADDR_DEFINED|RGI_IFACE_DEFINED) ) { - struct route_ipv6 *r6; - ALLOC_OBJ_CLEAR_GC (r6, struct route_ipv6, &rl6->gc); - - r6->network = *remote_host_ipv6; - r6->netbits = 128; - if ( !(rl6->rgi6.flags & RGI_ON_LINK) ) - { r6->gateway = rl6->rgi6.gateway.addr_ipv6; } - r6->metric = 1; + struct route_ipv6 *r6; + ALLOC_OBJ_CLEAR_GC(r6, struct route_ipv6, &rl6->gc); + + r6->network = *remote_host_ipv6; + r6->netbits = 128; + if (!(rl6->rgi6.flags & RGI_ON_LINK) ) + { + r6->gateway = rl6->rgi6.gateway.addr_ipv6; + } + r6->metric = 1; #ifdef _WIN32 - r6->adapter_index = rl6->rgi6.adapter_index; + r6->adapter_index = rl6->rgi6.adapter_index; #else - r6->iface = rl6->rgi6.iface; + r6->iface = rl6->rgi6.iface; #endif - r6->flags = RT_DEFINED | RT_METRIC_DEFINED; + r6->flags = RT_DEFINED | RT_METRIC_DEFINED; - r6->next = rl6->routes_ipv6; - rl6->routes_ipv6 = r6; - } - else + r6->next = rl6->routes_ipv6; + rl6->routes_ipv6 = r6; + } + else { - msg (M_WARN, "ROUTE6: IPv6 route overlaps with IPv6 remote address, but could not determine IPv6 gateway address + interface, expect failure\n" ); - } + msg(M_WARN, "ROUTE6: IPv6 route overlaps with IPv6 remote address, but could not determine IPv6 gateway address + interface, expect failure\n" ); + } } - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } static void -add_route3 (in_addr_t network, - in_addr_t netmask, - in_addr_t gateway, - const struct tuntap *tt, - unsigned int flags, - const struct route_gateway_info *rgi, - const struct env_set *es) -{ - struct route_ipv4 r; - CLEAR (r); - r.flags = RT_DEFINED; - r.network = network; - r.netmask = netmask; - r.gateway = gateway; - add_route (&r, tt, flags, rgi, es); +add_route3(in_addr_t network, + in_addr_t netmask, + in_addr_t gateway, + const struct tuntap *tt, + unsigned int flags, + const struct route_gateway_info *rgi, + const struct env_set *es) +{ + struct route_ipv4 r; + CLEAR(r); + r.flags = RT_DEFINED; + r.network = network; + r.netmask = netmask; + r.gateway = gateway; + add_route(&r, tt, flags, rgi, es); } static void -del_route3 (in_addr_t network, - in_addr_t netmask, - in_addr_t gateway, - const struct tuntap *tt, - unsigned int flags, - const struct route_gateway_info *rgi, - const struct env_set *es) -{ - struct route_ipv4 r; - CLEAR (r); - r.flags = RT_DEFINED|RT_ADDED; - r.network = network; - r.netmask = netmask; - r.gateway = gateway; - delete_route (&r, tt, flags, rgi, es); +del_route3(in_addr_t network, + in_addr_t netmask, + in_addr_t gateway, + const struct tuntap *tt, + unsigned int flags, + const struct route_gateway_info *rgi, + const struct env_set *es) +{ + struct route_ipv4 r; + CLEAR(r); + r.flags = RT_DEFINED|RT_ADDED; + r.network = network; + r.netmask = netmask; + r.gateway = gateway; + delete_route(&r, tt, flags, rgi, es); } static void -add_bypass_routes (struct route_bypass *rb, - in_addr_t gateway, - const struct tuntap *tt, - unsigned int flags, - const struct route_gateway_info *rgi, - const struct env_set *es) +add_bypass_routes(struct route_bypass *rb, + in_addr_t gateway, + const struct tuntap *tt, + unsigned int flags, + const struct route_gateway_info *rgi, + const struct env_set *es) { - int i; - for (i = 0; i < rb->n_bypass; ++i) + int i; + for (i = 0; i < rb->n_bypass; ++i) { - if (rb->bypass[i]) - add_route3 (rb->bypass[i], - IPV4_NETMASK_HOST, - gateway, - tt, - flags | ROUTE_REF_GW, - rgi, - es); + if (rb->bypass[i]) + { + add_route3(rb->bypass[i], + IPV4_NETMASK_HOST, + gateway, + tt, + flags | ROUTE_REF_GW, + rgi, + es); + } } } static void -del_bypass_routes (struct route_bypass *rb, - in_addr_t gateway, - const struct tuntap *tt, - unsigned int flags, - const struct route_gateway_info *rgi, - const struct env_set *es) +del_bypass_routes(struct route_bypass *rb, + in_addr_t gateway, + const struct tuntap *tt, + unsigned int flags, + const struct route_gateway_info *rgi, + const struct env_set *es) { - int i; - for (i = 0; i < rb->n_bypass; ++i) + int i; + for (i = 0; i < rb->n_bypass; ++i) { - if (rb->bypass[i]) - del_route3 (rb->bypass[i], - IPV4_NETMASK_HOST, - gateway, - tt, - flags | ROUTE_REF_GW, - rgi, - es); + if (rb->bypass[i]) + { + del_route3(rb->bypass[i], + IPV4_NETMASK_HOST, + gateway, + tt, + flags | ROUTE_REF_GW, + rgi, + es); + } } } static void -redirect_default_route_to_vpn (struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es) -{ - const char err[] = "NOTE: unable to redirect default gateway --"; - - if ( rl && rl->flags & RG_ENABLE ) - { - if (!(rl->spec.flags & RTSA_REMOTE_ENDPOINT) && (rl->flags & RG_REROUTE_GW)) - { - msg (M_WARN, "%s VPN gateway parameter (--route-gateway or --ifconfig) is missing", err); - } - else if (!(rl->rgi.flags & RGI_ADDR_DEFINED)) - { - msg (M_WARN, "%s Cannot read current default gateway from system", err); - } - else if (!(rl->spec.flags & RTSA_REMOTE_HOST)) - { - msg (M_WARN, "%s Cannot obtain current remote host address", err); - } - else - { -#ifndef TARGET_ANDROID - bool local = BOOL_CAST(rl->flags & RG_LOCAL); - if (rl->flags & RG_AUTO_LOCAL) { - const int tla = rl->spec.remote_host_local; - if (tla == TLA_NONLOCAL) - { - dmsg (D_ROUTE, "ROUTE remote_host is NOT LOCAL"); - local = false; - } - else if (tla == TLA_LOCAL) - { - dmsg (D_ROUTE, "ROUTE remote_host is LOCAL"); - local = true; - } - } - if (!local) - { - /* route remote host to original default gateway */ - /* if remote_host is not ipv4 (ie: ipv6), just skip - * adding this special /32 route */ - if (rl->spec.remote_host != IPV4_INVALID_ADDR) { - add_route3 (rl->spec.remote_host, - IPV4_NETMASK_HOST, - rl->rgi.gateway.addr, - tt, - flags | ROUTE_REF_GW, - &rl->rgi, - es); - rl->iflags |= RL_DID_LOCAL; - } else { - dmsg (D_ROUTE, "ROUTE remote_host protocol differs from tunneled"); - } - } -#endif +redirect_default_route_to_vpn(struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es) +{ + const char err[] = "NOTE: unable to redirect default gateway --"; - /* route DHCP/DNS server traffic through original default gateway */ - add_bypass_routes (&rl->spec.bypass, rl->rgi.gateway.addr, tt, flags, &rl->rgi, es); - - if (rl->flags & RG_REROUTE_GW) - { - if (rl->flags & RG_DEF1) - { - /* add new default route (1st component) */ - add_route3 (0x00000000, - 0x80000000, - rl->spec.remote_endpoint, - tt, - flags, - &rl->rgi, - es); - - /* add new default route (2nd component) */ - add_route3 (0x80000000, - 0x80000000, - rl->spec.remote_endpoint, - tt, - flags, - &rl->rgi, - es); - } - else - { - /* delete default route */ - del_route3 (0, - 0, - rl->rgi.gateway.addr, - tt, - flags | ROUTE_REF_GW, - &rl->rgi, - es); - - /* add new default route */ - add_route3 (0, - 0, - rl->spec.remote_endpoint, - tt, - flags, - &rl->rgi, - es); - } - } - - /* set a flag so we can undo later */ - rl->iflags |= RL_DID_REDIRECT_DEFAULT_GATEWAY; - } + if (rl && rl->flags & RG_ENABLE) + { + if (!(rl->spec.flags & RTSA_REMOTE_ENDPOINT) && (rl->flags & RG_REROUTE_GW)) + { + msg(M_WARN, "%s VPN gateway parameter (--route-gateway or --ifconfig) is missing", err); + } + else if (!(rl->rgi.flags & RGI_ADDR_DEFINED)) + { + msg(M_WARN, "%s Cannot read current default gateway from system", err); + } + else if (!(rl->spec.flags & RTSA_REMOTE_HOST)) + { + msg(M_WARN, "%s Cannot obtain current remote host address", err); + } + else + { +#ifndef TARGET_ANDROID + bool local = BOOL_CAST(rl->flags & RG_LOCAL); + if (rl->flags & RG_AUTO_LOCAL) + { + const int tla = rl->spec.remote_host_local; + if (tla == TLA_NONLOCAL) + { + dmsg(D_ROUTE, "ROUTE remote_host is NOT LOCAL"); + local = false; + } + else if (tla == TLA_LOCAL) + { + dmsg(D_ROUTE, "ROUTE remote_host is LOCAL"); + local = true; + } + } + if (!local) + { + /* route remote host to original default gateway */ + /* if remote_host is not ipv4 (ie: ipv6), just skip + * adding this special /32 route */ + if (rl->spec.remote_host != IPV4_INVALID_ADDR) + { + add_route3(rl->spec.remote_host, + IPV4_NETMASK_HOST, + rl->rgi.gateway.addr, + tt, + flags | ROUTE_REF_GW, + &rl->rgi, + es); + rl->iflags |= RL_DID_LOCAL; + } + else + { + dmsg(D_ROUTE, "ROUTE remote_host protocol differs from tunneled"); + } + } +#endif /* ifndef TARGET_ANDROID */ + + /* route DHCP/DNS server traffic through original default gateway */ + add_bypass_routes(&rl->spec.bypass, rl->rgi.gateway.addr, tt, flags, &rl->rgi, es); + + if (rl->flags & RG_REROUTE_GW) + { + if (rl->flags & RG_DEF1) + { + /* add new default route (1st component) */ + add_route3(0x00000000, + 0x80000000, + rl->spec.remote_endpoint, + tt, + flags, + &rl->rgi, + es); + + /* add new default route (2nd component) */ + add_route3(0x80000000, + 0x80000000, + rl->spec.remote_endpoint, + tt, + flags, + &rl->rgi, + es); + } + else + { + /* delete default route */ + del_route3(0, + 0, + rl->rgi.gateway.addr, + tt, + flags | ROUTE_REF_GW, + &rl->rgi, + es); + + /* add new default route */ + add_route3(0, + 0, + rl->spec.remote_endpoint, + tt, + flags, + &rl->rgi, + es); + } + } + + /* set a flag so we can undo later */ + rl->iflags |= RL_DID_REDIRECT_DEFAULT_GATEWAY; + } } } static void -undo_redirect_default_route_to_vpn (struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es) -{ - if ( rl && rl->iflags & RL_DID_REDIRECT_DEFAULT_GATEWAY ) - { - /* delete remote host route */ - if (rl->iflags & RL_DID_LOCAL) - { - del_route3 (rl->spec.remote_host, - IPV4_NETMASK_HOST, - rl->rgi.gateway.addr, - tt, - flags | ROUTE_REF_GW, - &rl->rgi, - es); - rl->iflags &= ~RL_DID_LOCAL; - } - - /* delete special DHCP/DNS bypass route */ - del_bypass_routes (&rl->spec.bypass, rl->rgi.gateway.addr, tt, flags, &rl->rgi, es); - - if (rl->flags & RG_REROUTE_GW) - { - if (rl->flags & RG_DEF1) - { - /* delete default route (1st component) */ - del_route3 (0x00000000, - 0x80000000, - rl->spec.remote_endpoint, - tt, - flags, - &rl->rgi, - es); - - /* delete default route (2nd component) */ - del_route3 (0x80000000, - 0x80000000, - rl->spec.remote_endpoint, - tt, - flags, - &rl->rgi, - es); - } - else - { - /* delete default route */ - del_route3 (0, - 0, - rl->spec.remote_endpoint, - tt, - flags, - &rl->rgi, - es); - - /* restore original default route */ - add_route3 (0, - 0, - rl->rgi.gateway.addr, - tt, - flags | ROUTE_REF_GW, - &rl->rgi, - es); - } - } - - rl->iflags &= ~RL_DID_REDIRECT_DEFAULT_GATEWAY; +undo_redirect_default_route_to_vpn(struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es) +{ + if (rl && rl->iflags & RL_DID_REDIRECT_DEFAULT_GATEWAY) + { + /* delete remote host route */ + if (rl->iflags & RL_DID_LOCAL) + { + del_route3(rl->spec.remote_host, + IPV4_NETMASK_HOST, + rl->rgi.gateway.addr, + tt, + flags | ROUTE_REF_GW, + &rl->rgi, + es); + rl->iflags &= ~RL_DID_LOCAL; + } + + /* delete special DHCP/DNS bypass route */ + del_bypass_routes(&rl->spec.bypass, rl->rgi.gateway.addr, tt, flags, &rl->rgi, es); + + if (rl->flags & RG_REROUTE_GW) + { + if (rl->flags & RG_DEF1) + { + /* delete default route (1st component) */ + del_route3(0x00000000, + 0x80000000, + rl->spec.remote_endpoint, + tt, + flags, + &rl->rgi, + es); + + /* delete default route (2nd component) */ + del_route3(0x80000000, + 0x80000000, + rl->spec.remote_endpoint, + tt, + flags, + &rl->rgi, + es); + } + else + { + /* delete default route */ + del_route3(0, + 0, + rl->spec.remote_endpoint, + tt, + flags, + &rl->rgi, + es); + + /* restore original default route */ + add_route3(0, + 0, + rl->rgi.gateway.addr, + tt, + flags | ROUTE_REF_GW, + &rl->rgi, + es); + } + } + + rl->iflags &= ~RL_DID_REDIRECT_DEFAULT_GATEWAY; } } void -add_routes (struct route_list *rl, struct route_ipv6_list *rl6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) +add_routes(struct route_list *rl, struct route_ipv6_list *rl6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) { - redirect_default_route_to_vpn (rl, tt, flags, es); - if ( rl && !(rl->iflags & RL_ROUTES_ADDED) ) + redirect_default_route_to_vpn(rl, tt, flags, es); + if (rl && !(rl->iflags & RL_ROUTES_ADDED) ) { - struct route_ipv4 *r; + struct route_ipv4 *r; #ifdef ENABLE_MANAGEMENT - if (management && rl->routes) - { - management_set_state (management, - OPENVPN_STATE_ADD_ROUTES, - NULL, - NULL, - NULL, - NULL, - NULL); - } + if (management && rl->routes) + { + management_set_state(management, + OPENVPN_STATE_ADD_ROUTES, + NULL, + NULL, + NULL, + NULL, + NULL); + } #endif - for (r = rl->routes; r; r = r->next) - { - check_subnet_conflict (r->network, r->netmask, "route"); - if (flags & ROUTE_DELETE_FIRST) - delete_route (r, tt, flags, &rl->rgi, es); - add_route (r, tt, flags, &rl->rgi, es); - } - rl->iflags |= RL_ROUTES_ADDED; + for (r = rl->routes; r; r = r->next) + { + check_subnet_conflict(r->network, r->netmask, "route"); + if (flags & ROUTE_DELETE_FIRST) + { + delete_route(r, tt, flags, &rl->rgi, es); + } + add_route(r, tt, flags, &rl->rgi, es); + } + rl->iflags |= RL_ROUTES_ADDED; } - if (rl6 && !(rl6->iflags & RL_ROUTES_ADDED) ) + if (rl6 && !(rl6->iflags & RL_ROUTES_ADDED) ) { - struct route_ipv6 *r; - for (r = rl6->routes_ipv6; r; r = r->next) - { - if (flags & ROUTE_DELETE_FIRST) - delete_route_ipv6 (r, tt, flags, es); - add_route_ipv6 (r, tt, flags, es); - } - rl6->iflags |= RL_ROUTES_ADDED; + struct route_ipv6 *r; + for (r = rl6->routes_ipv6; r; r = r->next) + { + if (flags & ROUTE_DELETE_FIRST) + { + delete_route_ipv6(r, tt, flags, es); + } + add_route_ipv6(r, tt, flags, es); + } + rl6->iflags |= RL_ROUTES_ADDED; } } void -delete_routes (struct route_list *rl, struct route_ipv6_list *rl6, - const struct tuntap *tt, unsigned int flags, const struct env_set *es) +delete_routes(struct route_list *rl, struct route_ipv6_list *rl6, + const struct tuntap *tt, unsigned int flags, const struct env_set *es) { - if ( rl && rl->iflags & RL_ROUTES_ADDED ) + if (rl && rl->iflags & RL_ROUTES_ADDED) { - struct route_ipv4 *r; - for (r = rl->routes; r; r = r->next) - { - delete_route (r, tt, flags, &rl->rgi, es); - } - rl->iflags &= ~RL_ROUTES_ADDED; + struct route_ipv4 *r; + for (r = rl->routes; r; r = r->next) + { + delete_route(r, tt, flags, &rl->rgi, es); + } + rl->iflags &= ~RL_ROUTES_ADDED; } - undo_redirect_default_route_to_vpn (rl, tt, flags, es); + undo_redirect_default_route_to_vpn(rl, tt, flags, es); - if ( rl ) + if (rl) { - clear_route_list (rl); + clear_route_list(rl); } - if ( rl6 && (rl6->iflags & RL_ROUTES_ADDED) ) + if (rl6 && (rl6->iflags & RL_ROUTES_ADDED) ) { - struct route_ipv6 *r6; - for (r6 = rl6->routes_ipv6; r6; r6 = r6->next) - { - delete_route_ipv6 (r6, tt, flags, es); - } - rl6->iflags &= ~RL_ROUTES_ADDED; + struct route_ipv6 *r6; + for (r6 = rl6->routes_ipv6; r6; r6 = r6->next) + { + delete_route_ipv6(r6, tt, flags, es); + } + rl6->iflags &= ~RL_ROUTES_ADDED; } - if ( rl6 ) + if (rl6) { - clear_route_ipv6_list (rl6); + clear_route_ipv6_list(rl6); } } #ifndef ENABLE_SMALL static const char * -show_opt (const char *option) +show_opt(const char *option) { - if (!option) - return "default (not set)"; - else - return option; + if (!option) + { + return "default (not set)"; + } + else + { + return option; + } } static void -print_route_option (const struct route_option *ro, int level) +print_route_option(const struct route_option *ro, int level) { - msg (level, " route %s/%s/%s/%s", - show_opt (ro->network), - show_opt (ro->netmask), - show_opt (ro->gateway), - show_opt (ro->metric)); + msg(level, " route %s/%s/%s/%s", + show_opt(ro->network), + show_opt(ro->netmask), + show_opt(ro->gateway), + show_opt(ro->metric)); } void -print_route_options (const struct route_option_list *rol, - int level) +print_route_options(const struct route_option_list *rol, + int level) { - struct route_option *ro; - if (rol->flags & RG_ENABLE) - msg (level, " [redirect_default_gateway local=%d]", - (rol->flags & RG_LOCAL) != 0); - for (ro = rol->routes; ro; ro = ro->next) - print_route_option (ro, level); + struct route_option *ro; + if (rol->flags & RG_ENABLE) + { + msg(level, " [redirect_default_gateway local=%d]", + (rol->flags & RG_LOCAL) != 0); + } + for (ro = rol->routes; ro; ro = ro->next) + print_route_option(ro, level); } void print_default_gateway(const int msglevel, - const struct route_gateway_info *rgi, - const struct route_ipv6_gateway_info *rgi6) -{ - struct gc_arena gc = gc_new (); - if (rgi && (rgi->flags & RGI_ADDR_DEFINED)) - { - struct buffer out = alloc_buf_gc (256, &gc); - buf_printf (&out, "ROUTE_GATEWAY"); - if (rgi->flags & RGI_ON_LINK) - buf_printf (&out, " ON_LINK"); - else - buf_printf (&out, " %s", print_in_addr_t (rgi->gateway.addr, 0, &gc)); - if (rgi->flags & RGI_NETMASK_DEFINED) - buf_printf (&out, "/%s", print_in_addr_t (rgi->gateway.netmask, 0, &gc)); + const struct route_gateway_info *rgi, + const struct route_ipv6_gateway_info *rgi6) +{ + struct gc_arena gc = gc_new(); + if (rgi && (rgi->flags & RGI_ADDR_DEFINED)) + { + struct buffer out = alloc_buf_gc(256, &gc); + buf_printf(&out, "ROUTE_GATEWAY"); + if (rgi->flags & RGI_ON_LINK) + { + buf_printf(&out, " ON_LINK"); + } + else + { + buf_printf(&out, " %s", print_in_addr_t(rgi->gateway.addr, 0, &gc)); + } + if (rgi->flags & RGI_NETMASK_DEFINED) + { + buf_printf(&out, "/%s", print_in_addr_t(rgi->gateway.netmask, 0, &gc)); + } #ifdef _WIN32 - if (rgi->flags & RGI_IFACE_DEFINED) - buf_printf (&out, " I=%u", (unsigned int)rgi->adapter_index); + if (rgi->flags & RGI_IFACE_DEFINED) + { + buf_printf(&out, " I=%u", (unsigned int)rgi->adapter_index); + } #else - if (rgi->flags & RGI_IFACE_DEFINED) - buf_printf (&out, " IFACE=%s", rgi->iface); + if (rgi->flags & RGI_IFACE_DEFINED) + { + buf_printf(&out, " IFACE=%s", rgi->iface); + } #endif - if (rgi->flags & RGI_HWADDR_DEFINED) - buf_printf (&out, " HWADDR=%s", format_hex_ex (rgi->hwaddr, 6, 0, 1, ":", &gc)); - msg (msglevel, "%s", BSTR (&out)); + if (rgi->flags & RGI_HWADDR_DEFINED) + { + buf_printf(&out, " HWADDR=%s", format_hex_ex(rgi->hwaddr, 6, 0, 1, ":", &gc)); + } + msg(msglevel, "%s", BSTR(&out)); } - if (rgi6 && (rgi6->flags & RGI_ADDR_DEFINED)) + if (rgi6 && (rgi6->flags & RGI_ADDR_DEFINED)) { - struct buffer out = alloc_buf_gc (256, &gc); - buf_printf (&out, "ROUTE6_GATEWAY"); - buf_printf (&out, " %s", print_in6_addr (rgi6->gateway.addr_ipv6, 0, &gc)); - if (rgi6->flags & RGI_ON_LINK) - buf_printf (&out, " ON_LINK"); - if (rgi6->flags & RGI_NETMASK_DEFINED) - buf_printf (&out, "/%d", rgi6->gateway.netbits_ipv6); + struct buffer out = alloc_buf_gc(256, &gc); + buf_printf(&out, "ROUTE6_GATEWAY"); + buf_printf(&out, " %s", print_in6_addr(rgi6->gateway.addr_ipv6, 0, &gc)); + if (rgi6->flags & RGI_ON_LINK) + { + buf_printf(&out, " ON_LINK"); + } + if (rgi6->flags & RGI_NETMASK_DEFINED) + { + buf_printf(&out, "/%d", rgi6->gateway.netbits_ipv6); + } #ifdef _WIN32 - if (rgi6->flags & RGI_IFACE_DEFINED) - buf_printf (&out, " I=%u", (unsigned int)rgi6->adapter_index); + if (rgi6->flags & RGI_IFACE_DEFINED) + { + buf_printf(&out, " I=%u", (unsigned int)rgi6->adapter_index); + } #else - if (rgi6->flags & RGI_IFACE_DEFINED) - buf_printf (&out, " IFACE=%s", rgi6->iface); + if (rgi6->flags & RGI_IFACE_DEFINED) + { + buf_printf(&out, " IFACE=%s", rgi6->iface); + } #endif - if (rgi6->flags & RGI_HWADDR_DEFINED) - buf_printf (&out, " HWADDR=%s", format_hex_ex (rgi6->hwaddr, 6, 0, 1, ":", &gc)); - msg (msglevel, "%s", BSTR (&out)); + if (rgi6->flags & RGI_HWADDR_DEFINED) + { + buf_printf(&out, " HWADDR=%s", format_hex_ex(rgi6->hwaddr, 6, 0, 1, ":", &gc)); + } + msg(msglevel, "%s", BSTR(&out)); } - gc_free (&gc); + gc_free(&gc); } -#endif +#endif /* ifndef ENABLE_SMALL */ static void -print_route (const struct route_ipv4 *r, int level) +print_route(const struct route_ipv4 *r, int level) { - struct gc_arena gc = gc_new (); - if (r->flags & RT_DEFINED) - msg (level, "%s", route_string (r, &gc)); - gc_free (&gc); + struct gc_arena gc = gc_new(); + if (r->flags & RT_DEFINED) + { + msg(level, "%s", route_string(r, &gc)); + } + gc_free(&gc); } void -print_routes (const struct route_list *rl, int level) +print_routes(const struct route_list *rl, int level) { - struct route_ipv4 *r; - for (r = rl->routes; r; r = r->next) - print_route (r, level); + struct route_ipv4 *r; + for (r = rl->routes; r; r = r->next) + print_route(r, level); } static void -setenv_route (struct env_set *es, const struct route_ipv4 *r, int i) +setenv_route(struct env_set *es, const struct route_ipv4 *r, int i) { - struct gc_arena gc = gc_new (); - if (r->flags & RT_DEFINED) + struct gc_arena gc = gc_new(); + if (r->flags & RT_DEFINED) { - setenv_route_addr (es, "network", r->network, i); - setenv_route_addr (es, "netmask", r->netmask, i); - setenv_route_addr (es, "gateway", r->gateway, i); + setenv_route_addr(es, "network", r->network, i); + setenv_route_addr(es, "netmask", r->netmask, i); + setenv_route_addr(es, "gateway", r->gateway, i); - if (r->flags & RT_METRIC_DEFINED) - { - struct buffer name = alloc_buf_gc (256, &gc); - buf_printf (&name, "route_metric_%d", i); - setenv_int (es, BSTR (&name), r->metric); - } + if (r->flags & RT_METRIC_DEFINED) + { + struct buffer name = alloc_buf_gc(256, &gc); + buf_printf(&name, "route_metric_%d", i); + setenv_int(es, BSTR(&name), r->metric); + } } - gc_free (&gc); + gc_free(&gc); } void -setenv_routes (struct env_set *es, const struct route_list *rl) +setenv_routes(struct env_set *es, const struct route_list *rl) { - int i = 1; - struct route_ipv4 *r; - for (r = rl->routes; r; r = r->next) - setenv_route (es, r, i++); + int i = 1; + struct route_ipv4 *r; + for (r = rl->routes; r; r = r->next) + setenv_route(es, r, i++); } static void -setenv_route_ipv6 (struct env_set *es, const struct route_ipv6 *r6, int i) +setenv_route_ipv6(struct env_set *es, const struct route_ipv6 *r6, int i) { - struct gc_arena gc = gc_new (); - if (r6->flags & RT_DEFINED) + struct gc_arena gc = gc_new(); + if (r6->flags & RT_DEFINED) { - struct buffer name1 = alloc_buf_gc( 256, &gc ); - struct buffer val = alloc_buf_gc( 256, &gc ); - struct buffer name2 = alloc_buf_gc( 256, &gc ); + struct buffer name1 = alloc_buf_gc( 256, &gc ); + struct buffer val = alloc_buf_gc( 256, &gc ); + struct buffer name2 = alloc_buf_gc( 256, &gc ); - buf_printf( &name1, "route_ipv6_network_%d", i ); - buf_printf( &val, "%s/%d", print_in6_addr( r6->network, 0, &gc ), - r6->netbits ); - setenv_str( es, BSTR(&name1), BSTR(&val) ); + buf_printf( &name1, "route_ipv6_network_%d", i ); + buf_printf( &val, "%s/%d", print_in6_addr( r6->network, 0, &gc ), + r6->netbits ); + setenv_str( es, BSTR(&name1), BSTR(&val) ); - buf_printf( &name2, "route_ipv6_gateway_%d", i ); - setenv_str( es, BSTR(&name2), print_in6_addr( r6->gateway, 0, &gc )); + buf_printf( &name2, "route_ipv6_gateway_%d", i ); + setenv_str( es, BSTR(&name2), print_in6_addr( r6->gateway, 0, &gc )); } - gc_free (&gc); + gc_free(&gc); } void -setenv_routes_ipv6 (struct env_set *es, const struct route_ipv6_list *rl6) +setenv_routes_ipv6(struct env_set *es, const struct route_ipv6_list *rl6) { - int i = 1; - struct route_ipv6 *r6; - for (r6 = rl6->routes_ipv6; r6; r6 = r6->next) - setenv_route_ipv6 (es, r6, i++); + int i = 1; + struct route_ipv6 *r6; + for (r6 = rl6->routes_ipv6; r6; r6 = r6->next) + setenv_route_ipv6(es, r6, i++); } /* @@ -1350,965 +1460,1073 @@ setenv_routes_ipv6 (struct env_set *es, const struct route_ipv6_list *rl6) #define LR_ERROR 2 /* caller should abort adding route */ static int -local_route (in_addr_t network, - in_addr_t netmask, - in_addr_t gateway, - const struct route_gateway_info *rgi) -{ - /* set LR_MATCH on local host routes */ - const int rgi_needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED|RGI_IFACE_DEFINED); - if (rgi - && (rgi->flags & rgi_needed) == rgi_needed - && gateway == rgi->gateway.addr - && netmask == 0xFFFFFFFF) - { - if (((network ^ rgi->gateway.addr) & rgi->gateway.netmask) == 0) - return LR_MATCH; - else - { - /* examine additional subnets on gateway interface */ - size_t i; - for (i = 0; i < rgi->n_addrs; ++i) - { - const struct route_gateway_address *gwa = &rgi->addrs[i]; - if (((network ^ gwa->addr) & gwa->netmask) == 0) - return LR_MATCH; - } - } +local_route(in_addr_t network, + in_addr_t netmask, + in_addr_t gateway, + const struct route_gateway_info *rgi) +{ + /* set LR_MATCH on local host routes */ + const int rgi_needed = (RGI_ADDR_DEFINED|RGI_NETMASK_DEFINED|RGI_IFACE_DEFINED); + if (rgi + && (rgi->flags & rgi_needed) == rgi_needed + && gateway == rgi->gateway.addr + && netmask == 0xFFFFFFFF) + { + if (((network ^ rgi->gateway.addr) & rgi->gateway.netmask) == 0) + { + return LR_MATCH; + } + else + { + /* examine additional subnets on gateway interface */ + size_t i; + for (i = 0; i < rgi->n_addrs; ++i) + { + const struct route_gateway_address *gwa = &rgi->addrs[i]; + if (((network ^ gwa->addr) & gwa->netmask) == 0) + { + return LR_MATCH; + } + } + } } return LR_NOMATCH; } /* Return true if the "on-link" form of the route should be used. This is when the gateway for a - a route is specified as an interface rather than an address. */ + * a route is specified as an interface rather than an address. */ static inline bool -is_on_link (const int is_local_route, const unsigned int flags, const struct route_gateway_info *rgi) +is_on_link(const int is_local_route, const unsigned int flags, const struct route_gateway_info *rgi) { - return rgi && (is_local_route == LR_MATCH || ((flags & ROUTE_REF_GW) && (rgi->flags & RGI_ON_LINK))); + return rgi && (is_local_route == LR_MATCH || ((flags & ROUTE_REF_GW) && (rgi->flags & RGI_ON_LINK))); } void -add_route (struct route_ipv4 *r, - const struct tuntap *tt, - unsigned int flags, - const struct route_gateway_info *rgi, /* may be NULL */ - const struct env_set *es) +add_route(struct route_ipv4 *r, + const struct tuntap *tt, + unsigned int flags, + const struct route_gateway_info *rgi, /* may be NULL */ + const struct env_set *es) { - struct gc_arena gc; - struct argv argv = argv_new (); - const char *network; - const char *netmask; - const char *gateway; - bool status = false; - int is_local_route; - - if (!(r->flags & RT_DEFINED)) - return; + struct gc_arena gc; + struct argv argv = argv_new(); + const char *network; + const char *netmask; + const char *gateway; + bool status = false; + int is_local_route; + + if (!(r->flags & RT_DEFINED)) + { + return; + } - gc_init (&gc); + gc_init(&gc); - network = print_in_addr_t (r->network, 0, &gc); - netmask = print_in_addr_t (r->netmask, 0, &gc); - gateway = print_in_addr_t (r->gateway, 0, &gc); + network = print_in_addr_t(r->network, 0, &gc); + netmask = print_in_addr_t(r->netmask, 0, &gc); + gateway = print_in_addr_t(r->gateway, 0, &gc); - is_local_route = local_route(r->network, r->netmask, r->gateway, rgi); - if (is_local_route == LR_ERROR) - goto done; + is_local_route = local_route(r->network, r->netmask, r->gateway, rgi); + if (is_local_route == LR_ERROR) + { + goto done; + } #if defined(TARGET_LINUX) #ifdef ENABLE_IPROUTE - argv_printf (&argv, "%s route add %s/%d", - iproute_path, - network, - netmask_to_netbits2(r->netmask)); - - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "metric %d", r->metric); - - if (is_on_link (is_local_route, flags, rgi)) - argv_printf_cat (&argv, "dev %s", rgi->iface); - else - argv_printf_cat (&argv, "via %s", gateway); -#else - argv_printf (&argv, "%s add -net %s netmask %s", - ROUTE_PATH, - network, - netmask); - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "metric %d", r->metric); - if (is_on_link (is_local_route, flags, rgi)) - argv_printf_cat (&argv, "dev %s", rgi->iface); - else - argv_printf_cat (&argv, "gw %s", gateway); + argv_printf(&argv, "%s route add %s/%d", + iproute_path, + network, + netmask_to_netbits2(r->netmask)); + + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "metric %d", r->metric); + } + + if (is_on_link(is_local_route, flags, rgi)) + { + argv_printf_cat(&argv, "dev %s", rgi->iface); + } + else + { + argv_printf_cat(&argv, "via %s", gateway); + } +#else /* ifdef ENABLE_IPROUTE */ + argv_printf(&argv, "%s add -net %s netmask %s", + ROUTE_PATH, + network, + netmask); + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "metric %d", r->metric); + } + if (is_on_link(is_local_route, flags, rgi)) + { + argv_printf_cat(&argv, "dev %s", rgi->iface); + } + else + { + argv_printf_cat(&argv, "gw %s", gateway); + } #endif /*ENABLE_IPROUTE*/ - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: Linux route add command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: Linux route add command failed"); #elif defined (TARGET_ANDROID) - struct buffer out = alloc_buf_gc (128, &gc); + struct buffer out = alloc_buf_gc(128, &gc); - if (rgi) - buf_printf (&out, "%s %s %s dev %s", network, netmask, gateway, rgi->iface); - else - buf_printf (&out, "%s %s %s", network, netmask, gateway); - management_android_control (management, "ROUTE", buf_bptr(&out)); + if (rgi) + { + buf_printf(&out, "%s %s %s dev %s", network, netmask, gateway, rgi->iface); + } + else + { + buf_printf(&out, "%s %s %s", network, netmask, gateway); + } + management_android_control(management, "ROUTE", buf_bptr(&out)); #elif defined (_WIN32) - { - DWORD ai = TUN_ADAPTER_INDEX_INVALID; - argv_printf (&argv, "%s%sc ADD %s MASK %s %s", - get_win_sys_path(), - WIN_ROUTE_PATH_SUFFIX, - network, - netmask, - gateway); - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "METRIC %d", r->metric); - if (is_on_link (is_local_route, flags, rgi)) - { - ai = rgi->adapter_index; - argv_printf_cat (&argv, "IF %u", (unsigned int)ai); - } + { + DWORD ai = TUN_ADAPTER_INDEX_INVALID; + argv_printf(&argv, "%s%sc ADD %s MASK %s %s", + get_win_sys_path(), + WIN_ROUTE_PATH_SUFFIX, + network, + netmask, + gateway); + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "METRIC %d", r->metric); + } + if (is_on_link(is_local_route, flags, rgi)) + { + ai = rgi->adapter_index; + argv_printf_cat(&argv, "IF %u", (unsigned int)ai); + } - argv_msg (D_ROUTE, &argv); + argv_msg(D_ROUTE, &argv); - if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_SERVICE) - { - status = add_route_service (r, tt); - msg (D_ROUTE, "Route addition via service %s", status ? "succeeded" : "failed"); - } - else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_IPAPI) - { - status = add_route_ipapi (r, tt, ai); - msg (D_ROUTE, "Route addition via IPAPI %s", status ? "succeeded" : "failed"); - } - else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_EXE) - { - netcmd_semaphore_lock (); - status = openvpn_execve_check (&argv, es, 0, "ERROR: Windows route add command failed"); - netcmd_semaphore_release (); - } - else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_ADAPTIVE) - { - status = add_route_ipapi (r, tt, ai); - msg (D_ROUTE, "Route addition via IPAPI %s [adaptive]", status ? "succeeded" : "failed"); - if (!status) - { - msg (D_ROUTE, "Route addition fallback to route.exe"); - netcmd_semaphore_lock (); - status = openvpn_execve_check (&argv, es, 0, "ERROR: Windows route add command failed [adaptive]"); - netcmd_semaphore_release (); - } - } - else - { - ASSERT (0); - } - } + if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_SERVICE) + { + status = add_route_service(r, tt); + msg(D_ROUTE, "Route addition via service %s", status ? "succeeded" : "failed"); + } + else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_IPAPI) + { + status = add_route_ipapi(r, tt, ai); + msg(D_ROUTE, "Route addition via IPAPI %s", status ? "succeeded" : "failed"); + } + else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_EXE) + { + netcmd_semaphore_lock(); + status = openvpn_execve_check(&argv, es, 0, "ERROR: Windows route add command failed"); + netcmd_semaphore_release(); + } + else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_ADAPTIVE) + { + status = add_route_ipapi(r, tt, ai); + msg(D_ROUTE, "Route addition via IPAPI %s [adaptive]", status ? "succeeded" : "failed"); + if (!status) + { + msg(D_ROUTE, "Route addition fallback to route.exe"); + netcmd_semaphore_lock(); + status = openvpn_execve_check(&argv, es, 0, "ERROR: Windows route add command failed [adaptive]"); + netcmd_semaphore_release(); + } + } + else + { + ASSERT(0); + } + } #elif defined (TARGET_SOLARIS) - /* example: route add 192.0.2.32 -netmask 255.255.255.224 somegateway */ + /* example: route add 192.0.2.32 -netmask 255.255.255.224 somegateway */ - argv_printf (&argv, "%s add", - ROUTE_PATH); + argv_printf(&argv, "%s add", + ROUTE_PATH); - argv_printf_cat (&argv, "%s -netmask %s %s", - network, - netmask, - gateway); + argv_printf_cat(&argv, "%s -netmask %s %s", + network, + netmask, + gateway); - /* Solaris can only distinguish between "metric 0" == "on-link on the - * interface where the IP address given is configured" and "metric > 0" - * == "use gateway specified" (no finer-grained route metrics available) - * - * More recent versions of Solaris can also do "-interface", but that - * would break backwards compatibility with older versions for no gain. - */ - if (r->flags & RT_METRIC_DEFINED ) - argv_printf_cat (&argv, "%d", r->metric); + /* Solaris can only distinguish between "metric 0" == "on-link on the + * interface where the IP address given is configured" and "metric > 0" + * == "use gateway specified" (no finer-grained route metrics available) + * + * More recent versions of Solaris can also do "-interface", but that + * would break backwards compatibility with older versions for no gain. + */ + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "%d", r->metric); + } - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: Solaris route add command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: Solaris route add command failed"); #elif defined(TARGET_FREEBSD) - argv_printf (&argv, "%s add", - ROUTE_PATH); + argv_printf(&argv, "%s add", + ROUTE_PATH); #if 0 - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "-rtt %d", r->metric); + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "-rtt %d", r->metric); + } #endif - argv_printf_cat (&argv, "-net %s %s %s", - network, - gateway, - netmask); + argv_printf_cat(&argv, "-net %s %s %s", + network, + gateway, + netmask); - /* FIXME -- add on-link support for FreeBSD */ + /* FIXME -- add on-link support for FreeBSD */ - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: FreeBSD route add command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: FreeBSD route add command failed"); #elif defined(TARGET_DRAGONFLY) - argv_printf (&argv, "%s add", - ROUTE_PATH); + argv_printf(&argv, "%s add", + ROUTE_PATH); #if 0 - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "-rtt %d", r->metric); + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "-rtt %d", r->metric); + } #endif - argv_printf_cat (&argv, "-net %s %s %s", - network, - gateway, - netmask); + argv_printf_cat(&argv, "-net %s %s %s", + network, + gateway, + netmask); - /* FIXME -- add on-link support for Dragonfly */ + /* FIXME -- add on-link support for Dragonfly */ - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: DragonFly route add command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: DragonFly route add command failed"); #elif defined(TARGET_DARWIN) - argv_printf (&argv, "%s add", - ROUTE_PATH); + argv_printf(&argv, "%s add", + ROUTE_PATH); #if 0 - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "-rtt %d", r->metric); + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "-rtt %d", r->metric); + } #endif - if (is_on_link (is_local_route, flags, rgi)) + if (is_on_link(is_local_route, flags, rgi)) { - /* Mac OS X route syntax for ON_LINK: - route add -cloning -net 10.10.0.1 -netmask 255.255.255.255 -interface en0 */ - argv_printf_cat (&argv, "-cloning -net %s -netmask %s -interface %s", - network, - netmask, - rgi->iface); + /* Mac OS X route syntax for ON_LINK: + * route add -cloning -net 10.10.0.1 -netmask 255.255.255.255 -interface en0 */ + argv_printf_cat(&argv, "-cloning -net %s -netmask %s -interface %s", + network, + netmask, + rgi->iface); } - else + else { - argv_printf_cat (&argv, "-net %s %s %s", - network, - gateway, - netmask); + argv_printf_cat(&argv, "-net %s %s %s", + network, + gateway, + netmask); } - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: OS X route add command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: OS X route add command failed"); #elif defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) - argv_printf (&argv, "%s add", - ROUTE_PATH); + argv_printf(&argv, "%s add", + ROUTE_PATH); #if 0 - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "-rtt %d", r->metric); + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "-rtt %d", r->metric); + } #endif - argv_printf_cat (&argv, "-net %s %s -netmask %s", - network, - gateway, - netmask); + argv_printf_cat(&argv, "-net %s %s -netmask %s", + network, + gateway, + netmask); - /* FIXME -- add on-link support for OpenBSD/NetBSD */ + /* FIXME -- add on-link support for OpenBSD/NetBSD */ - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: OpenBSD/NetBSD route add command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: OpenBSD/NetBSD route add command failed"); #elif defined(TARGET_AIX) - { - int netbits = netmask_to_netbits2(r->netmask); - argv_printf (&argv, "%s add -net %s/%d %s", - ROUTE_PATH, - network, netbits, gateway); - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: AIX route add command failed"); - } + { + int netbits = netmask_to_netbits2(r->netmask); + argv_printf(&argv, "%s add -net %s/%d %s", + ROUTE_PATH, + network, netbits, gateway); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: AIX route add command failed"); + } -#else - msg (M_FATAL, "Sorry, but I don't know how to do 'route' commands on this operating system. Try putting your routes in a --route-up script"); -#endif +#else /* if defined(TARGET_LINUX) */ + msg(M_FATAL, "Sorry, but I don't know how to do 'route' commands on this operating system. Try putting your routes in a --route-up script"); +#endif /* if defined(TARGET_LINUX) */ - done: - if (status) - r->flags |= RT_ADDED; - else - r->flags &= ~RT_ADDED; - argv_reset (&argv); - gc_free (&gc); +done: + if (status) + { + r->flags |= RT_ADDED; + } + else + { + r->flags &= ~RT_ADDED; + } + argv_reset(&argv); + gc_free(&gc); } static void route_ipv6_clear_host_bits( struct route_ipv6 *r6 ) { - /* clear host bit parts of route - * (needed if routes are specified improperly, or if we need to - * explicitely setup/clear the "connected" network routes on some OSes) - */ - int byte = 15; - int bits_to_clear = 128 - r6->netbits; + /* clear host bit parts of route + * (needed if routes are specified improperly, or if we need to + * explicitely setup/clear the "connected" network routes on some OSes) + */ + int byte = 15; + int bits_to_clear = 128 - r6->netbits; - while( byte >= 0 && bits_to_clear > 0 ) + while (byte >= 0 && bits_to_clear > 0) { - if ( bits_to_clear >= 8 ) - { r6->network.s6_addr[byte--] = 0; bits_to_clear -= 8; } - else - { r6->network.s6_addr[byte--] &= (0xff << bits_to_clear); bits_to_clear = 0; } + if (bits_to_clear >= 8) + { + r6->network.s6_addr[byte--] = 0; bits_to_clear -= 8; + } + else + { + r6->network.s6_addr[byte--] &= (0xff << bits_to_clear); bits_to_clear = 0; + } } } void -add_route_ipv6 (struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) +add_route_ipv6(struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) { - struct gc_arena gc; - struct argv argv = argv_new (); + struct gc_arena gc; + struct argv argv = argv_new(); - const char *network; - const char *gateway; - bool status = false; - const char *device = tt->actual_name; + const char *network; + const char *gateway; + bool status = false; + const char *device = tt->actual_name; - bool gateway_needed = false; + bool gateway_needed = false; - if (! (r6->flags & RT_DEFINED) ) - return; + if (!(r6->flags & RT_DEFINED) ) + { + return; + } #ifndef _WIN32 - if ( r6->iface != NULL ) /* vpn server special route */ + if (r6->iface != NULL) /* vpn server special route */ { - device = r6->iface; - if ( !IN6_IS_ADDR_UNSPECIFIED(&r6->gateway) ) - gateway_needed = true; + device = r6->iface; + if (!IN6_IS_ADDR_UNSPECIFIED(&r6->gateway) ) + { + gateway_needed = true; + } } #endif - gc_init (&gc); + gc_init(&gc); - route_ipv6_clear_host_bits (r6); + route_ipv6_clear_host_bits(r6); - network = print_in6_addr( r6->network, 0, &gc); - gateway = print_in6_addr( r6->gateway, 0, &gc); + network = print_in6_addr( r6->network, 0, &gc); + gateway = print_in6_addr( r6->gateway, 0, &gc); -#if defined(TARGET_DARWIN) || \ - defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) || \ - defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) +#if defined(TARGET_DARWIN) \ + || defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) \ + || defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) - /* the BSD platforms cannot specify gateway and interface independently, - * but for link-local destinations, we MUST specify the interface, so - * we build a combined "$gateway%$interface" gateway string - */ - if ( r6->iface != NULL && gateway_needed && - IN6_IS_ADDR_LINKLOCAL(&r6->gateway) ) /* fe80::...%intf */ + /* the BSD platforms cannot specify gateway and interface independently, + * but for link-local destinations, we MUST specify the interface, so + * we build a combined "$gateway%$interface" gateway string + */ + if (r6->iface != NULL && gateway_needed + && IN6_IS_ADDR_LINKLOCAL(&r6->gateway) ) /* fe80::...%intf */ { - int len = strlen(gateway) + 1 + strlen(r6->iface)+1; - char * tmp = gc_malloc( len, true, &gc ); - snprintf( tmp, len, "%s%%%s", gateway, r6->iface ); - gateway = tmp; + int len = strlen(gateway) + 1 + strlen(r6->iface)+1; + char *tmp = gc_malloc( len, true, &gc ); + snprintf( tmp, len, "%s%%%s", gateway, r6->iface ); + gateway = tmp; } #endif - if (!tt->did_ifconfig_ipv6_setup) + if (!tt->did_ifconfig_ipv6_setup) { - msg( M_INFO, "add_route_ipv6(): not adding %s/%d: " - "no IPv6 address been configured on interface %s", - network, r6->netbits, device); - return; + msg( M_INFO, "add_route_ipv6(): not adding %s/%d: " + "no IPv6 address been configured on interface %s", + network, r6->netbits, device); + return; } - msg( M_INFO, "add_route_ipv6(%s/%d -> %s metric %d) dev %s", - network, r6->netbits, gateway, r6->metric, device ); + msg( M_INFO, "add_route_ipv6(%s/%d -> %s metric %d) dev %s", + network, r6->netbits, gateway, r6->metric, device ); - /* - * Filter out routes which are essentially no-ops - * (not currently done for IPv6) - */ + /* + * Filter out routes which are essentially no-ops + * (not currently done for IPv6) + */ - /* On "tun" interface, we never set a gateway if the operating system - * can do "route to interface" - it does not add value, as the target - * dev already fully qualifies the route destination on point-to-point - * interfaces. OTOH, on "tap" interface, we must always set the - * gateway unless the route is to be an on-link network - */ - if ( tt->type == DEV_TYPE_TAP && - !( (r6->flags & RT_METRIC_DEFINED) && r6->metric == 0 ) ) + /* On "tun" interface, we never set a gateway if the operating system + * can do "route to interface" - it does not add value, as the target + * dev already fully qualifies the route destination on point-to-point + * interfaces. OTOH, on "tap" interface, we must always set the + * gateway unless the route is to be an on-link network + */ + if (tt->type == DEV_TYPE_TAP + && !( (r6->flags & RT_METRIC_DEFINED) && r6->metric == 0 ) ) { - gateway_needed = true; + gateway_needed = true; } #if defined(TARGET_LINUX) #ifdef ENABLE_IPROUTE - argv_printf (&argv, "%s -6 route add %s/%d dev %s", - iproute_path, - network, - r6->netbits, - device); - if (gateway_needed) - argv_printf_cat (&argv, "via %s", gateway); - if ( (r6->flags & RT_METRIC_DEFINED) && r6->metric > 0 ) - argv_printf_cat (&argv, " metric %d", r6->metric); + argv_printf(&argv, "%s -6 route add %s/%d dev %s", + iproute_path, + network, + r6->netbits, + device); + if (gateway_needed) + { + argv_printf_cat(&argv, "via %s", gateway); + } + if ( (r6->flags & RT_METRIC_DEFINED) && r6->metric > 0) + { + argv_printf_cat(&argv, " metric %d", r6->metric); + } -#else - argv_printf (&argv, "%s -A inet6 add %s/%d dev %s", - ROUTE_PATH, - network, - r6->netbits, - device); - if (gateway_needed) - argv_printf_cat (&argv, "gw %s", gateway); - if ( (r6->flags & RT_METRIC_DEFINED) && r6->metric > 0 ) - argv_printf_cat (&argv, " metric %d", r6->metric); +#else /* ifdef ENABLE_IPROUTE */ + argv_printf(&argv, "%s -A inet6 add %s/%d dev %s", + ROUTE_PATH, + network, + r6->netbits, + device); + if (gateway_needed) + { + argv_printf_cat(&argv, "gw %s", gateway); + } + if ( (r6->flags & RT_METRIC_DEFINED) && r6->metric > 0) + { + argv_printf_cat(&argv, " metric %d", r6->metric); + } #endif /*ENABLE_IPROUTE*/ - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: Linux route -6/-A inet6 add command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: Linux route -6/-A inet6 add command failed"); #elif defined (TARGET_ANDROID) - struct buffer out = alloc_buf_gc (64, &gc); + struct buffer out = alloc_buf_gc(64, &gc); - buf_printf (&out, "%s/%d %s", network, r6->netbits, device); + buf_printf(&out, "%s/%d %s", network, r6->netbits, device); - management_android_control (management, "ROUTE6", buf_bptr(&out)); + management_android_control(management, "ROUTE6", buf_bptr(&out)); #elif defined (_WIN32) - if (tt->options.msg_channel) - status = add_route_ipv6_service (r6, tt); - else - { - struct buffer out = alloc_buf_gc (64, &gc); - if ( r6->adapter_index ) /* vpn server special route */ - { - buf_printf (&out, "interface=%d", r6->adapter_index ); - gateway_needed = true; - } - else - { - buf_printf (&out, "interface=%d", tt->adapter_index ); - } - device = buf_bptr(&out); - - /* netsh interface ipv6 add route 2001:db8::/32 MyTunDevice */ - argv_printf (&argv, "%s%sc interface ipv6 add route %s/%d %s", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - network, - r6->netbits, - device); - - /* next-hop depends on TUN or TAP mode: - * - in TAP mode, we use the "real" next-hop - * - in TUN mode we use a special-case link-local address that the tapdrvr - * knows about and will answer ND (neighbor discovery) packets for - */ - if ( tt->type == DEV_TYPE_TUN && !gateway_needed ) - argv_printf_cat( &argv, " %s", "fe80::8" ); - else if ( !IN6_IS_ADDR_UNSPECIFIED(&r6->gateway) ) - argv_printf_cat( &argv, " %s", gateway ); + if (tt->options.msg_channel) + { + status = add_route_ipv6_service(r6, tt); + } + else + { + struct buffer out = alloc_buf_gc(64, &gc); + if (r6->adapter_index) /* vpn server special route */ + { + buf_printf(&out, "interface=%d", r6->adapter_index ); + gateway_needed = true; + } + else + { + buf_printf(&out, "interface=%d", tt->adapter_index ); + } + device = buf_bptr(&out); + + /* netsh interface ipv6 add route 2001:db8::/32 MyTunDevice */ + argv_printf(&argv, "%s%sc interface ipv6 add route %s/%d %s", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + network, + r6->netbits, + device); + + /* next-hop depends on TUN or TAP mode: + * - in TAP mode, we use the "real" next-hop + * - in TUN mode we use a special-case link-local address that the tapdrvr + * knows about and will answer ND (neighbor discovery) packets for + */ + if (tt->type == DEV_TYPE_TUN && !gateway_needed) + { + argv_printf_cat( &argv, " %s", "fe80::8" ); + } + else if (!IN6_IS_ADDR_UNSPECIFIED(&r6->gateway) ) + { + argv_printf_cat( &argv, " %s", gateway ); + } #if 0 - if (r6->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, " METRIC %d", r->metric); + if (r6->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, " METRIC %d", r->metric); + } #endif - /* in some versions of Windows, routes are persistent across reboots by - * default, unless "store=active" is set (pointed out by Tony Lim, thanks) - */ - argv_printf_cat( &argv, " store=active" ); + /* in some versions of Windows, routes are persistent across reboots by + * default, unless "store=active" is set (pointed out by Tony Lim, thanks) + */ + argv_printf_cat( &argv, " store=active" ); - argv_msg (D_ROUTE, &argv); + argv_msg(D_ROUTE, &argv); - netcmd_semaphore_lock (); - status = openvpn_execve_check (&argv, es, 0, "ERROR: Windows route add ipv6 command failed"); - netcmd_semaphore_release (); + netcmd_semaphore_lock(); + status = openvpn_execve_check(&argv, es, 0, "ERROR: Windows route add ipv6 command failed"); + netcmd_semaphore_release(); } #elif defined (TARGET_SOLARIS) - /* example: route add -inet6 2001:db8::/32 somegateway 0 */ - - /* for some reason, routes to tun/tap do not work for me unless I set - * "metric 0" - otherwise, the routes will be nicely installed, but - * packets will just disappear somewhere. So we always use "0" now, - * unless the route points to "gateway on other interface"... - * - * (Note: OpenSolaris can not specify host%interface gateways, so we just - * use the GW addresses - it seems to still work for fe80:: addresses, - * however this is done internally. NUD maybe?) - */ - argv_printf (&argv, "%s add -inet6 %s/%d %s", - ROUTE_PATH, - network, - r6->netbits, - gateway ); - - /* on tun/tap, not "elsewhere"? -> metric 0 */ - if ( !r6->iface ) - argv_printf_cat (&argv, "0"); - - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: Solaris route add -inet6 command failed"); + /* example: route add -inet6 2001:db8::/32 somegateway 0 */ + + /* for some reason, routes to tun/tap do not work for me unless I set + * "metric 0" - otherwise, the routes will be nicely installed, but + * packets will just disappear somewhere. So we always use "0" now, + * unless the route points to "gateway on other interface"... + * + * (Note: OpenSolaris can not specify host%interface gateways, so we just + * use the GW addresses - it seems to still work for fe80:: addresses, + * however this is done internally. NUD maybe?) + */ + argv_printf(&argv, "%s add -inet6 %s/%d %s", + ROUTE_PATH, + network, + r6->netbits, + gateway ); + + /* on tun/tap, not "elsewhere"? -> metric 0 */ + if (!r6->iface) + { + argv_printf_cat(&argv, "0"); + } + + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: Solaris route add -inet6 command failed"); #elif defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) - argv_printf (&argv, "%s add -inet6 %s/%d", - ROUTE_PATH, - network, - r6->netbits); + argv_printf(&argv, "%s add -inet6 %s/%d", + ROUTE_PATH, + network, + r6->netbits); - if (gateway_needed) - argv_printf_cat (&argv, "%s", gateway); - else - argv_printf_cat (&argv, "-iface %s", device); + if (gateway_needed) + { + argv_printf_cat(&argv, "%s", gateway); + } + else + { + argv_printf_cat(&argv, "-iface %s", device); + } - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: *BSD route add -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: *BSD route add -inet6 command failed"); -#elif defined(TARGET_DARWIN) +#elif defined(TARGET_DARWIN) - argv_printf (&argv, "%s add -inet6 %s -prefixlen %d", - ROUTE_PATH, - network, r6->netbits ); + argv_printf(&argv, "%s add -inet6 %s -prefixlen %d", + ROUTE_PATH, + network, r6->netbits ); - if (gateway_needed) - argv_printf_cat (&argv, "%s", gateway); - else - argv_printf_cat (&argv, "-iface %s", device); + if (gateway_needed) + { + argv_printf_cat(&argv, "%s", gateway); + } + else + { + argv_printf_cat(&argv, "-iface %s", device); + } - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: MacOS X route add -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: MacOS X route add -inet6 command failed"); #elif defined(TARGET_OPENBSD) - argv_printf (&argv, "%s add -inet6 %s -prefixlen %d %s", - ROUTE_PATH, - network, r6->netbits, gateway ); + argv_printf(&argv, "%s add -inet6 %s -prefixlen %d %s", + ROUTE_PATH, + network, r6->netbits, gateway ); - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: OpenBSD route add -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: OpenBSD route add -inet6 command failed"); #elif defined(TARGET_NETBSD) - argv_printf (&argv, "%s add -inet6 %s/%d %s", - ROUTE_PATH, - network, r6->netbits, gateway ); + argv_printf(&argv, "%s add -inet6 %s/%d %s", + ROUTE_PATH, + network, r6->netbits, gateway ); - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: NetBSD route add -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: NetBSD route add -inet6 command failed"); #elif defined(TARGET_AIX) - argv_printf (&argv, "%s add -inet6 %s/%d %s", - ROUTE_PATH, - network, r6->netbits, gateway); - argv_msg (D_ROUTE, &argv); - status = openvpn_execve_check (&argv, es, 0, "ERROR: AIX route add command failed"); + argv_printf(&argv, "%s add -inet6 %s/%d %s", + ROUTE_PATH, + network, r6->netbits, gateway); + argv_msg(D_ROUTE, &argv); + status = openvpn_execve_check(&argv, es, 0, "ERROR: AIX route add command failed"); -#else - msg (M_FATAL, "Sorry, but I don't know how to do 'route ipv6' commands on this operating system. Try putting your routes in a --route-up script"); -#endif +#else /* if defined(TARGET_LINUX) */ + msg(M_FATAL, "Sorry, but I don't know how to do 'route ipv6' commands on this operating system. Try putting your routes in a --route-up script"); +#endif /* if defined(TARGET_LINUX) */ - if (status) - r6->flags |= RT_ADDED; - else - r6->flags &= ~RT_ADDED; - argv_reset (&argv); - gc_free (&gc); + if (status) + { + r6->flags |= RT_ADDED; + } + else + { + r6->flags &= ~RT_ADDED; + } + argv_reset(&argv); + gc_free(&gc); } static void -delete_route (struct route_ipv4 *r, - const struct tuntap *tt, - unsigned int flags, - const struct route_gateway_info *rgi, - const struct env_set *es) +delete_route(struct route_ipv4 *r, + const struct tuntap *tt, + unsigned int flags, + const struct route_gateway_info *rgi, + const struct env_set *es) { - struct gc_arena gc; - struct argv argv = argv_new (); - const char *network; - const char *netmask; - const char *gateway; - int is_local_route; - - if ((r->flags & (RT_DEFINED|RT_ADDED)) != (RT_DEFINED|RT_ADDED)) - return; + struct gc_arena gc; + struct argv argv = argv_new(); + const char *network; + const char *netmask; + const char *gateway; + int is_local_route; + + if ((r->flags & (RT_DEFINED|RT_ADDED)) != (RT_DEFINED|RT_ADDED)) + { + return; + } - gc_init (&gc); + gc_init(&gc); - network = print_in_addr_t (r->network, 0, &gc); - netmask = print_in_addr_t (r->netmask, 0, &gc); - gateway = print_in_addr_t (r->gateway, 0, &gc); + network = print_in_addr_t(r->network, 0, &gc); + netmask = print_in_addr_t(r->netmask, 0, &gc); + gateway = print_in_addr_t(r->gateway, 0, &gc); - is_local_route = local_route(r->network, r->netmask, r->gateway, rgi); - if (is_local_route == LR_ERROR) - goto done; + is_local_route = local_route(r->network, r->netmask, r->gateway, rgi); + if (is_local_route == LR_ERROR) + { + goto done; + } #if defined(TARGET_LINUX) #ifdef ENABLE_IPROUTE - argv_printf (&argv, "%s route del %s/%d", - iproute_path, - network, - netmask_to_netbits2(r->netmask)); + argv_printf(&argv, "%s route del %s/%d", + iproute_path, + network, + netmask_to_netbits2(r->netmask)); #else - argv_printf (&argv, "%s del -net %s netmask %s", - ROUTE_PATH, - network, - netmask); + argv_printf(&argv, "%s del -net %s netmask %s", + ROUTE_PATH, + network, + netmask); #endif /*ENABLE_IPROUTE*/ - if (r->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "metric %d", r->metric); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: Linux route delete command failed"); + if (r->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "metric %d", r->metric); + } + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: Linux route delete command failed"); #elif defined (_WIN32) - - argv_printf (&argv, "%s%sc DELETE %s MASK %s %s", - get_win_sys_path(), - WIN_ROUTE_PATH_SUFFIX, - network, - netmask, - gateway); - argv_msg (D_ROUTE, &argv); + argv_printf(&argv, "%s%sc DELETE %s MASK %s %s", + get_win_sys_path(), + WIN_ROUTE_PATH_SUFFIX, + network, + netmask, + gateway); + + argv_msg(D_ROUTE, &argv); - if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_SERVICE) + if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_SERVICE) { - const bool status = del_route_service (r, tt); - msg (D_ROUTE, "Route deletion via service %s", status ? "succeeded" : "failed"); + const bool status = del_route_service(r, tt); + msg(D_ROUTE, "Route deletion via service %s", status ? "succeeded" : "failed"); } - else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_IPAPI) + else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_IPAPI) { - const bool status = del_route_ipapi (r, tt); - msg (D_ROUTE, "Route deletion via IPAPI %s", status ? "succeeded" : "failed"); + const bool status = del_route_ipapi(r, tt); + msg(D_ROUTE, "Route deletion via IPAPI %s", status ? "succeeded" : "failed"); } - else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_EXE) + else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_EXE) { - netcmd_semaphore_lock (); - openvpn_execve_check (&argv, es, 0, "ERROR: Windows route delete command failed"); - netcmd_semaphore_release (); + netcmd_semaphore_lock(); + openvpn_execve_check(&argv, es, 0, "ERROR: Windows route delete command failed"); + netcmd_semaphore_release(); } - else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_ADAPTIVE) + else if ((flags & ROUTE_METHOD_MASK) == ROUTE_METHOD_ADAPTIVE) { - const bool status = del_route_ipapi (r, tt); - msg (D_ROUTE, "Route deletion via IPAPI %s [adaptive]", status ? "succeeded" : "failed"); - if (!status) - { - msg (D_ROUTE, "Route deletion fallback to route.exe"); - netcmd_semaphore_lock (); - openvpn_execve_check (&argv, es, 0, "ERROR: Windows route delete command failed [adaptive]"); - netcmd_semaphore_release (); - } + const bool status = del_route_ipapi(r, tt); + msg(D_ROUTE, "Route deletion via IPAPI %s [adaptive]", status ? "succeeded" : "failed"); + if (!status) + { + msg(D_ROUTE, "Route deletion fallback to route.exe"); + netcmd_semaphore_lock(); + openvpn_execve_check(&argv, es, 0, "ERROR: Windows route delete command failed [adaptive]"); + netcmd_semaphore_release(); + } } - else + else { - ASSERT (0); + ASSERT(0); } #elif defined (TARGET_SOLARIS) - argv_printf (&argv, "%s delete %s -netmask %s %s", - ROUTE_PATH, - network, - netmask, - gateway); + argv_printf(&argv, "%s delete %s -netmask %s %s", + ROUTE_PATH, + network, + netmask, + gateway); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: Solaris route delete command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: Solaris route delete command failed"); #elif defined(TARGET_FREEBSD) - argv_printf (&argv, "%s delete -net %s %s %s", - ROUTE_PATH, - network, - gateway, - netmask); + argv_printf(&argv, "%s delete -net %s %s %s", + ROUTE_PATH, + network, + gateway, + netmask); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: FreeBSD route delete command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: FreeBSD route delete command failed"); #elif defined(TARGET_DRAGONFLY) - argv_printf (&argv, "%s delete -net %s %s %s", - ROUTE_PATH, - network, - gateway, - netmask); + argv_printf(&argv, "%s delete -net %s %s %s", + ROUTE_PATH, + network, + gateway, + netmask); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: DragonFly route delete command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: DragonFly route delete command failed"); #elif defined(TARGET_DARWIN) - if (is_on_link (is_local_route, flags, rgi)) + if (is_on_link(is_local_route, flags, rgi)) { - argv_printf (&argv, "%s delete -cloning -net %s -netmask %s -interface %s", - ROUTE_PATH, - network, - netmask, - rgi->iface); + argv_printf(&argv, "%s delete -cloning -net %s -netmask %s -interface %s", + ROUTE_PATH, + network, + netmask, + rgi->iface); } - else + else { - argv_printf (&argv, "%s delete -net %s %s %s", - ROUTE_PATH, - network, - gateway, - netmask); + argv_printf(&argv, "%s delete -net %s %s %s", + ROUTE_PATH, + network, + gateway, + netmask); } - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: OS X route delete command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: OS X route delete command failed"); #elif defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) - argv_printf (&argv, "%s delete -net %s %s -netmask %s", - ROUTE_PATH, - network, - gateway, - netmask); + argv_printf(&argv, "%s delete -net %s %s -netmask %s", + ROUTE_PATH, + network, + gateway, + netmask); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: OpenBSD/NetBSD route delete command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: OpenBSD/NetBSD route delete command failed"); #elif defined(TARGET_ANDROID) - msg (M_NONFATAL, "Sorry, deleting routes on Android is not possible. The VpnService API allows routes to be set on connect only."); + msg(M_NONFATAL, "Sorry, deleting routes on Android is not possible. The VpnService API allows routes to be set on connect only."); #elif defined(TARGET_AIX) - { - int netbits = netmask_to_netbits2(r->netmask); - argv_printf (&argv, "%s delete -net %s/%d %s", - ROUTE_PATH, - network, netbits, gateway); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: AIX route delete command failed"); - } + { + int netbits = netmask_to_netbits2(r->netmask); + argv_printf(&argv, "%s delete -net %s/%d %s", + ROUTE_PATH, + network, netbits, gateway); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: AIX route delete command failed"); + } -#else - msg (M_FATAL, "Sorry, but I don't know how to do 'route' commands on this operating system. Try putting your routes in a --route-up script"); -#endif +#else /* if defined(TARGET_LINUX) */ + msg(M_FATAL, "Sorry, but I don't know how to do 'route' commands on this operating system. Try putting your routes in a --route-up script"); +#endif /* if defined(TARGET_LINUX) */ - done: - r->flags &= ~RT_ADDED; - argv_reset (&argv); - gc_free (&gc); +done: + r->flags &= ~RT_ADDED; + argv_reset(&argv); + gc_free(&gc); } void -delete_route_ipv6 (const struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) +delete_route_ipv6(const struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) { - struct gc_arena gc; - struct argv argv = argv_new (); - const char *network; - const char *gateway; - const char *device = tt->actual_name; - bool gateway_needed = false; - - if ((r6->flags & (RT_DEFINED|RT_ADDED)) != (RT_DEFINED|RT_ADDED)) - return; + struct gc_arena gc; + struct argv argv = argv_new(); + const char *network; + const char *gateway; + const char *device = tt->actual_name; + bool gateway_needed = false; + + if ((r6->flags & (RT_DEFINED|RT_ADDED)) != (RT_DEFINED|RT_ADDED)) + { + return; + } #ifndef _WIN32 - if ( r6->iface != NULL ) /* vpn server special route */ + if (r6->iface != NULL) /* vpn server special route */ { - device = r6->iface; - gateway_needed = true; + device = r6->iface; + gateway_needed = true; } #endif - gc_init (&gc); + gc_init(&gc); - network = print_in6_addr( r6->network, 0, &gc); - gateway = print_in6_addr( r6->gateway, 0, &gc); + network = print_in6_addr( r6->network, 0, &gc); + gateway = print_in6_addr( r6->gateway, 0, &gc); -#if defined(TARGET_DARWIN) || \ - defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) || \ - defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) +#if defined(TARGET_DARWIN) \ + || defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) \ + || defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) - /* the BSD platforms cannot specify gateway and interface independently, - * but for link-local destinations, we MUST specify the interface, so - * we build a combined "$gateway%$interface" gateway string - */ - if ( r6->iface != NULL && gateway_needed && - IN6_IS_ADDR_LINKLOCAL(&r6->gateway) ) /* fe80::...%intf */ + /* the BSD platforms cannot specify gateway and interface independently, + * but for link-local destinations, we MUST specify the interface, so + * we build a combined "$gateway%$interface" gateway string + */ + if (r6->iface != NULL && gateway_needed + && IN6_IS_ADDR_LINKLOCAL(&r6->gateway) ) /* fe80::...%intf */ { - int len = strlen(gateway) + 1 + strlen(r6->iface)+1; - char * tmp = gc_malloc( len, true, &gc ); - snprintf( tmp, len, "%s%%%s", gateway, r6->iface ); - gateway = tmp; + int len = strlen(gateway) + 1 + strlen(r6->iface)+1; + char *tmp = gc_malloc( len, true, &gc ); + snprintf( tmp, len, "%s%%%s", gateway, r6->iface ); + gateway = tmp; } #endif - msg( M_INFO, "delete_route_ipv6(%s/%d)", network, r6->netbits ); + msg( M_INFO, "delete_route_ipv6(%s/%d)", network, r6->netbits ); - /* if we used a gateway on "add route", we also need to specify it on - * delete, otherwise some OSes will refuse to delete the route - */ - if ( tt->type == DEV_TYPE_TAP && - !( (r6->flags & RT_METRIC_DEFINED) && r6->metric == 0 ) ) + /* if we used a gateway on "add route", we also need to specify it on + * delete, otherwise some OSes will refuse to delete the route + */ + if (tt->type == DEV_TYPE_TAP + && !( (r6->flags & RT_METRIC_DEFINED) && r6->metric == 0 ) ) { - gateway_needed = true; + gateway_needed = true; } #if defined(TARGET_LINUX) #ifdef ENABLE_IPROUTE - argv_printf (&argv, "%s -6 route del %s/%d dev %s", - iproute_path, - network, - r6->netbits, - device); - if (gateway_needed) - argv_printf_cat (&argv, "via %s", gateway); -#else - argv_printf (&argv, "%s -A inet6 del %s/%d dev %s", - ROUTE_PATH, - network, - r6->netbits, - device); - if (gateway_needed) - argv_printf_cat (&argv, "gw %s", gateway); - if ( (r6->flags & RT_METRIC_DEFINED) && r6->metric > 0 ) - argv_printf_cat (&argv, " metric %d", r6->metric); + argv_printf(&argv, "%s -6 route del %s/%d dev %s", + iproute_path, + network, + r6->netbits, + device); + if (gateway_needed) + { + argv_printf_cat(&argv, "via %s", gateway); + } +#else /* ifdef ENABLE_IPROUTE */ + argv_printf(&argv, "%s -A inet6 del %s/%d dev %s", + ROUTE_PATH, + network, + r6->netbits, + device); + if (gateway_needed) + { + argv_printf_cat(&argv, "gw %s", gateway); + } + if ( (r6->flags & RT_METRIC_DEFINED) && r6->metric > 0) + { + argv_printf_cat(&argv, " metric %d", r6->metric); + } #endif /*ENABLE_IPROUTE*/ - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: Linux route -6/-A inet6 del command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: Linux route -6/-A inet6 del command failed"); #elif defined (_WIN32) - if (tt->options.msg_channel) - del_route_ipv6_service (r6, tt); - else - { - struct buffer out = alloc_buf_gc (64, &gc); - if ( r6->adapter_index ) /* vpn server special route */ - { - buf_printf (&out, "interface=%d", r6->adapter_index ); - gateway_needed = true; - } - else - { - buf_printf (&out, "interface=%d", tt->adapter_index ); - } - device = buf_bptr(&out); - - /* netsh interface ipv6 delete route 2001:db8::/32 MyTunDevice */ - argv_printf (&argv, "%s%sc interface ipv6 delete route %s/%d %s", - get_win_sys_path(), - NETSH_PATH_SUFFIX, - network, - r6->netbits, - device); - - /* next-hop depends on TUN or TAP mode: - * - in TAP mode, we use the "real" next-hop - * - in TUN mode we use a special-case link-local address that the tapdrvr - * knows about and will answer ND (neighbor discovery) packets for - * (and "route deletion without specifying next-hop" does not work...) - */ - if ( tt->type == DEV_TYPE_TUN && !gateway_needed ) - argv_printf_cat( &argv, " %s", "fe80::8" ); - else if ( !IN6_IS_ADDR_UNSPECIFIED(&r6->gateway) ) - argv_printf_cat( &argv, " %s", gateway ); + if (tt->options.msg_channel) + { + del_route_ipv6_service(r6, tt); + } + else + { + struct buffer out = alloc_buf_gc(64, &gc); + if (r6->adapter_index) /* vpn server special route */ + { + buf_printf(&out, "interface=%d", r6->adapter_index ); + gateway_needed = true; + } + else + { + buf_printf(&out, "interface=%d", tt->adapter_index ); + } + device = buf_bptr(&out); + + /* netsh interface ipv6 delete route 2001:db8::/32 MyTunDevice */ + argv_printf(&argv, "%s%sc interface ipv6 delete route %s/%d %s", + get_win_sys_path(), + NETSH_PATH_SUFFIX, + network, + r6->netbits, + device); + + /* next-hop depends on TUN or TAP mode: + * - in TAP mode, we use the "real" next-hop + * - in TUN mode we use a special-case link-local address that the tapdrvr + * knows about and will answer ND (neighbor discovery) packets for + * (and "route deletion without specifying next-hop" does not work...) + */ + if (tt->type == DEV_TYPE_TUN && !gateway_needed) + { + argv_printf_cat( &argv, " %s", "fe80::8" ); + } + else if (!IN6_IS_ADDR_UNSPECIFIED(&r6->gateway) ) + { + argv_printf_cat( &argv, " %s", gateway ); + } #if 0 - if (r6->flags & RT_METRIC_DEFINED) - argv_printf_cat (&argv, "METRIC %d", r->metric); + if (r6->flags & RT_METRIC_DEFINED) + { + argv_printf_cat(&argv, "METRIC %d", r->metric); + } #endif - /* Windows XP to 7 "just delete" routes, wherever they came from, but - * in Windows 8(.1?), if you create them with "store=active", this is - * how you should delete them as well (pointed out by Cedric Tabary) - */ - argv_printf_cat( &argv, " store=active" ); + /* Windows XP to 7 "just delete" routes, wherever they came from, but + * in Windows 8(.1?), if you create them with "store=active", this is + * how you should delete them as well (pointed out by Cedric Tabary) + */ + argv_printf_cat( &argv, " store=active" ); - argv_msg (D_ROUTE, &argv); + argv_msg(D_ROUTE, &argv); - netcmd_semaphore_lock (); - openvpn_execve_check (&argv, es, 0, "ERROR: Windows route delete ipv6 command failed"); - netcmd_semaphore_release (); + netcmd_semaphore_lock(); + openvpn_execve_check(&argv, es, 0, "ERROR: Windows route delete ipv6 command failed"); + netcmd_semaphore_release(); } #elif defined (TARGET_SOLARIS) - /* example: route delete -inet6 2001:db8::/32 somegateway */ + /* example: route delete -inet6 2001:db8::/32 somegateway */ - argv_printf (&argv, "%s delete -inet6 %s/%d %s", - ROUTE_PATH, - network, - r6->netbits, - gateway ); + argv_printf(&argv, "%s delete -inet6 %s/%d %s", + ROUTE_PATH, + network, + r6->netbits, + gateway ); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: Solaris route delete -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: Solaris route delete -inet6 command failed"); #elif defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) - argv_printf (&argv, "%s delete -inet6 %s/%d", - ROUTE_PATH, - network, - r6->netbits ); + argv_printf(&argv, "%s delete -inet6 %s/%d", + ROUTE_PATH, + network, + r6->netbits ); - if (gateway_needed) - argv_printf_cat (&argv, "%s", gateway); - else - argv_printf_cat (&argv, "-iface %s", device); + if (gateway_needed) + { + argv_printf_cat(&argv, "%s", gateway); + } + else + { + argv_printf_cat(&argv, "-iface %s", device); + } - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: *BSD route delete -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: *BSD route delete -inet6 command failed"); -#elif defined(TARGET_DARWIN) +#elif defined(TARGET_DARWIN) - argv_printf (&argv, "%s delete -inet6 %s -prefixlen %d", - ROUTE_PATH, - network, r6->netbits ); + argv_printf(&argv, "%s delete -inet6 %s -prefixlen %d", + ROUTE_PATH, + network, r6->netbits ); - if (gateway_needed) - argv_printf_cat (&argv, "%s", gateway); - else - argv_printf_cat (&argv, "-iface %s", device); + if (gateway_needed) + { + argv_printf_cat(&argv, "%s", gateway); + } + else + { + argv_printf_cat(&argv, "-iface %s", device); + } - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: MacOS X route delete -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: MacOS X route delete -inet6 command failed"); #elif defined(TARGET_OPENBSD) - argv_printf (&argv, "%s delete -inet6 %s -prefixlen %d %s", - ROUTE_PATH, - network, r6->netbits, gateway ); + argv_printf(&argv, "%s delete -inet6 %s -prefixlen %d %s", + ROUTE_PATH, + network, r6->netbits, gateway ); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: OpenBSD route delete -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: OpenBSD route delete -inet6 command failed"); #elif defined(TARGET_NETBSD) - argv_printf (&argv, "%s delete -inet6 %s/%d %s", - ROUTE_PATH, - network, r6->netbits, gateway ); + argv_printf(&argv, "%s delete -inet6 %s/%d %s", + ROUTE_PATH, + network, r6->netbits, gateway ); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: NetBSD route delete -inet6 command failed"); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: NetBSD route delete -inet6 command failed"); #elif defined(TARGET_AIX) - argv_printf (&argv, "%s delete -inet6 %s/%d %s", - ROUTE_PATH, - network, r6->netbits, gateway); - argv_msg (D_ROUTE, &argv); - openvpn_execve_check (&argv, es, 0, "ERROR: AIX route add command failed"); + argv_printf(&argv, "%s delete -inet6 %s/%d %s", + ROUTE_PATH, + network, r6->netbits, gateway); + argv_msg(D_ROUTE, &argv); + openvpn_execve_check(&argv, es, 0, "ERROR: AIX route add command failed"); -#else - msg (M_FATAL, "Sorry, but I don't know how to do 'route ipv6' commands on this operating system. Try putting your routes in a --route-down script"); -#endif +#else /* if defined(TARGET_LINUX) */ + msg(M_FATAL, "Sorry, but I don't know how to do 'route ipv6' commands on this operating system. Try putting your routes in a --route-down script"); +#endif /* if defined(TARGET_LINUX) */ - argv_reset (&argv); - gc_free (&gc); + argv_reset(&argv); + gc_free(&gc); } /* @@ -2319,224 +2537,234 @@ delete_route_ipv6 (const struct route_ipv6 *r6, const struct tuntap *tt, unsigne #if defined(_WIN32) static const MIB_IPFORWARDTABLE * -get_windows_routing_table (struct gc_arena *gc) +get_windows_routing_table(struct gc_arena *gc) { - ULONG size = 0; - PMIB_IPFORWARDTABLE rt = NULL; - DWORD status; + ULONG size = 0; + PMIB_IPFORWARDTABLE rt = NULL; + DWORD status; - status = GetIpForwardTable (NULL, &size, TRUE); - if (status == ERROR_INSUFFICIENT_BUFFER) + status = GetIpForwardTable(NULL, &size, TRUE); + if (status == ERROR_INSUFFICIENT_BUFFER) { - rt = (PMIB_IPFORWARDTABLE) gc_malloc (size, false, gc); - status = GetIpForwardTable (rt, &size, TRUE); - if (status != NO_ERROR) - { - msg (D_ROUTE, "NOTE: GetIpForwardTable returned error: %s (code=%u)", - strerror_win32 (status, gc), - (unsigned int)status); - rt = NULL; - } + rt = (PMIB_IPFORWARDTABLE) gc_malloc(size, false, gc); + status = GetIpForwardTable(rt, &size, TRUE); + if (status != NO_ERROR) + { + msg(D_ROUTE, "NOTE: GetIpForwardTable returned error: %s (code=%u)", + strerror_win32(status, gc), + (unsigned int)status); + rt = NULL; + } } - return rt; + return rt; } static int -test_route (const IP_ADAPTER_INFO *adapters, - const in_addr_t gateway, - DWORD *index) +test_route(const IP_ADAPTER_INFO *adapters, + const in_addr_t gateway, + DWORD *index) { - int count = 0; - DWORD i = adapter_index_of_ip (adapters, gateway, &count, NULL); - if (index) - *index = i; - return count; + int count = 0; + DWORD i = adapter_index_of_ip(adapters, gateway, &count, NULL); + if (index) + { + *index = i; + } + return count; } static void -test_route_helper (bool *ret, - int *count, - int *good, - int *ambig, - const IP_ADAPTER_INFO *adapters, - const in_addr_t gateway) +test_route_helper(bool *ret, + int *count, + int *good, + int *ambig, + const IP_ADAPTER_INFO *adapters, + const in_addr_t gateway) { - int c; + int c; - ++*count; - c = test_route (adapters, gateway, NULL); - if (c == 0) - *ret = false; - else - ++*good; - if (c > 1) - ++*ambig; + ++*count; + c = test_route(adapters, gateway, NULL); + if (c == 0) + { + *ret = false; + } + else + { + ++*good; + } + if (c > 1) + { + ++*ambig; + } } /* * If we tried to add routes now, would we succeed? */ bool -test_routes (const struct route_list *rl, const struct tuntap *tt) +test_routes(const struct route_list *rl, const struct tuntap *tt) { - struct gc_arena gc = gc_new (); - const IP_ADAPTER_INFO *adapters = get_adapter_info_list (&gc); - bool ret = false; - int count = 0; - int good = 0; - int ambig = 0; - int len = -1; - bool adapter_up = false; - - if (is_adapter_up (tt, adapters)) + struct gc_arena gc = gc_new(); + const IP_ADAPTER_INFO *adapters = get_adapter_info_list(&gc); + bool ret = false; + int count = 0; + int good = 0; + int ambig = 0; + int len = -1; + bool adapter_up = false; + + if (is_adapter_up(tt, adapters)) { - ret = true; - adapter_up = true; - - if (rl) - { - struct route_ipv4 *r; - for (r = rl->routes, len = 0; r; r = r->next, ++len) - test_route_helper (&ret, &count, &good, &ambig, adapters, r->gateway); + ret = true; + adapter_up = true; - if ((rl->flags & RG_ENABLE) && (rl->spec.flags & RTSA_REMOTE_ENDPOINT)) - test_route_helper (&ret, &count, &good, &ambig, adapters, rl->spec.remote_endpoint); - } + if (rl) + { + struct route_ipv4 *r; + for (r = rl->routes, len = 0; r; r = r->next, ++len) + test_route_helper(&ret, &count, &good, &ambig, adapters, r->gateway); + + if ((rl->flags & RG_ENABLE) && (rl->spec.flags & RTSA_REMOTE_ENDPOINT)) + { + test_route_helper(&ret, &count, &good, &ambig, adapters, rl->spec.remote_endpoint); + } + } } - msg (D_ROUTE, "TEST ROUTES: %d/%d succeeded len=%d ret=%d a=%d u/d=%s", - good, - count, - len, - (int)ret, - ambig, - adapter_up ? "up" : "down"); + msg(D_ROUTE, "TEST ROUTES: %d/%d succeeded len=%d ret=%d a=%d u/d=%s", + good, + count, + len, + (int)ret, + ambig, + adapter_up ? "up" : "down"); - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } static const MIB_IPFORWARDROW * -get_default_gateway_row (const MIB_IPFORWARDTABLE *routes) +get_default_gateway_row(const MIB_IPFORWARDTABLE *routes) { - struct gc_arena gc = gc_new (); - DWORD lowest_metric = MAXDWORD; - const MIB_IPFORWARDROW *ret = NULL; - int i; - int best = -1; + struct gc_arena gc = gc_new(); + DWORD lowest_metric = MAXDWORD; + const MIB_IPFORWARDROW *ret = NULL; + int i; + int best = -1; - if (routes) + if (routes) { - for (i = 0; i < routes->dwNumEntries; ++i) - { - const MIB_IPFORWARDROW *row = &routes->table[i]; - const in_addr_t net = ntohl (row->dwForwardDest); - const in_addr_t mask = ntohl (row->dwForwardMask); - const DWORD index = row->dwForwardIfIndex; - const DWORD metric = row->dwForwardMetric1; - - dmsg (D_ROUTE_DEBUG, "GDGR: route[%d] %s/%s i=%d m=%d", - i, - print_in_addr_t ((in_addr_t) net, 0, &gc), - print_in_addr_t ((in_addr_t) mask, 0, &gc), - (int)index, - (int)metric); - - if (!net && !mask && metric < lowest_metric) - { - ret = row; - lowest_metric = metric; - best = i; - } - } + for (i = 0; i < routes->dwNumEntries; ++i) + { + const MIB_IPFORWARDROW *row = &routes->table[i]; + const in_addr_t net = ntohl(row->dwForwardDest); + const in_addr_t mask = ntohl(row->dwForwardMask); + const DWORD index = row->dwForwardIfIndex; + const DWORD metric = row->dwForwardMetric1; + + dmsg(D_ROUTE_DEBUG, "GDGR: route[%d] %s/%s i=%d m=%d", + i, + print_in_addr_t((in_addr_t) net, 0, &gc), + print_in_addr_t((in_addr_t) mask, 0, &gc), + (int)index, + (int)metric); + + if (!net && !mask && metric < lowest_metric) + { + ret = row; + lowest_metric = metric; + best = i; + } + } } - dmsg (D_ROUTE_DEBUG, "GDGR: best=%d lm=%u", best, (unsigned int)lowest_metric); + dmsg(D_ROUTE_DEBUG, "GDGR: best=%d lm=%u", best, (unsigned int)lowest_metric); - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } void -get_default_gateway (struct route_gateway_info *rgi) +get_default_gateway(struct route_gateway_info *rgi) { - struct gc_arena gc = gc_new (); + struct gc_arena gc = gc_new(); - const IP_ADAPTER_INFO *adapters = get_adapter_info_list (&gc); - const MIB_IPFORWARDTABLE *routes = get_windows_routing_table (&gc); - const MIB_IPFORWARDROW *row = get_default_gateway_row (routes); - DWORD a_index; - const IP_ADAPTER_INFO *ai; + const IP_ADAPTER_INFO *adapters = get_adapter_info_list(&gc); + const MIB_IPFORWARDTABLE *routes = get_windows_routing_table(&gc); + const MIB_IPFORWARDROW *row = get_default_gateway_row(routes); + DWORD a_index; + const IP_ADAPTER_INFO *ai; - CLEAR(*rgi); + CLEAR(*rgi); - if (row) + if (row) { - rgi->gateway.addr = ntohl (row->dwForwardNextHop); - if (rgi->gateway.addr) - { - rgi->flags |= RGI_ADDR_DEFINED; - a_index = adapter_index_of_ip (adapters, rgi->gateway.addr, NULL, &rgi->gateway.netmask); - if (a_index != TUN_ADAPTER_INDEX_INVALID) - { - rgi->adapter_index = a_index; - rgi->flags |= (RGI_IFACE_DEFINED|RGI_NETMASK_DEFINED); - ai = get_adapter (adapters, a_index); - if (ai) - { - memcpy (rgi->hwaddr, ai->Address, 6); - rgi->flags |= RGI_HWADDR_DEFINED; - } - } - } + rgi->gateway.addr = ntohl(row->dwForwardNextHop); + if (rgi->gateway.addr) + { + rgi->flags |= RGI_ADDR_DEFINED; + a_index = adapter_index_of_ip(adapters, rgi->gateway.addr, NULL, &rgi->gateway.netmask); + if (a_index != TUN_ADAPTER_INDEX_INVALID) + { + rgi->adapter_index = a_index; + rgi->flags |= (RGI_IFACE_DEFINED|RGI_NETMASK_DEFINED); + ai = get_adapter(adapters, a_index); + if (ai) + { + memcpy(rgi->hwaddr, ai->Address, 6); + rgi->flags |= RGI_HWADDR_DEFINED; + } + } + } } - gc_free (&gc); + gc_free(&gc); } static DWORD -windows_route_find_if_index (const struct route_ipv4 *r, const struct tuntap *tt) +windows_route_find_if_index(const struct route_ipv4 *r, const struct tuntap *tt) { - struct gc_arena gc = gc_new (); - DWORD ret = TUN_ADAPTER_INDEX_INVALID; - int count = 0; - const IP_ADAPTER_INFO *adapters = get_adapter_info_list (&gc); - const IP_ADAPTER_INFO *tun_adapter = get_tun_adapter (tt, adapters); - bool on_tun = false; - - /* first test on tun interface */ - if (is_ip_in_adapter_subnet (tun_adapter, r->gateway, NULL)) + struct gc_arena gc = gc_new(); + DWORD ret = TUN_ADAPTER_INDEX_INVALID; + int count = 0; + const IP_ADAPTER_INFO *adapters = get_adapter_info_list(&gc); + const IP_ADAPTER_INFO *tun_adapter = get_tun_adapter(tt, adapters); + bool on_tun = false; + + /* first test on tun interface */ + if (is_ip_in_adapter_subnet(tun_adapter, r->gateway, NULL)) { - ret = tun_adapter->Index; - count = 1; - on_tun = true; + ret = tun_adapter->Index; + count = 1; + on_tun = true; } - else /* test on other interfaces */ + else /* test on other interfaces */ { - count = test_route (adapters, r->gateway, &ret); + count = test_route(adapters, r->gateway, &ret); } - if (count == 0) + if (count == 0) { - msg (M_WARN, "Warning: route gateway is not reachable on any active network adapters: %s", - print_in_addr_t (r->gateway, 0, &gc)); - ret = TUN_ADAPTER_INDEX_INVALID; + msg(M_WARN, "Warning: route gateway is not reachable on any active network adapters: %s", + print_in_addr_t(r->gateway, 0, &gc)); + ret = TUN_ADAPTER_INDEX_INVALID; } - else if (count > 1) + else if (count > 1) { - msg (M_WARN, "Warning: route gateway is ambiguous: %s (%d matches)", - print_in_addr_t (r->gateway, 0, &gc), - count); - ret = TUN_ADAPTER_INDEX_INVALID; + msg(M_WARN, "Warning: route gateway is ambiguous: %s (%d matches)", + print_in_addr_t(r->gateway, 0, &gc), + count); + ret = TUN_ADAPTER_INDEX_INVALID; } - dmsg (D_ROUTE_DEBUG, "DEBUG: route find if: on_tun=%d count=%d index=%d", - on_tun, - count, - (int)ret); + dmsg(D_ROUTE_DEBUG, "DEBUG: route find if: on_tun=%d count=%d index=%d", + on_tun, + count, + (int)ret); - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } /* IPv6 implementation using GetBestRoute2() @@ -2546,9 +2774,9 @@ windows_route_find_if_index (const struct route_ipv4 *r, const struct tuntap *tt */ void get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, - const struct in6_addr *dest) + const struct in6_addr *dest) { - struct gc_arena gc = gc_new (); + struct gc_arena gc = gc_new(); MIB_IPFORWARD_ROW2 BestRoute; SOCKADDR_INET DestinationAddress, BestSourceAddress; DWORD BestIfIndex; @@ -2556,11 +2784,11 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, NET_LUID InterfaceLuid; CLEAR(*rgi6); - CLEAR(InterfaceLuid); // cleared = not used for lookup + CLEAR(InterfaceLuid); /* cleared = not used for lookup */ CLEAR(DestinationAddress); DestinationAddress.si_family = AF_INET6; - if ( dest ) + if (dest) { DestinationAddress.Ipv6.sin6_addr = *dest; } @@ -2569,10 +2797,10 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, if (status != NO_ERROR) { - msg (D_ROUTE, "NOTE: GetBestInterfaceEx returned error: %s (code=%u)", - strerror_win32 (status, &gc), - (unsigned int)status); - goto done; + msg(D_ROUTE, "NOTE: GetBestInterfaceEx returned error: %s (code=%u)", + strerror_win32(status, &gc), + (unsigned int)status); + goto done; } msg( D_ROUTE, "GetBestInterfaceEx() returned if=%d", (int) BestIfIndex ); @@ -2583,485 +2811,523 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, if (status != NO_ERROR) { - msg (D_ROUTE, "NOTE: GetIpForwardEntry2 returned error: %s (code=%u)", - strerror_win32 (status, &gc), - (unsigned int)status); - goto done; + msg(D_ROUTE, "NOTE: GetIpForwardEntry2 returned error: %s (code=%u)", + strerror_win32(status, &gc), + (unsigned int)status); + goto done; } msg( D_ROUTE, "GDG6: II=%d DP=%s/%d NH=%s", - BestRoute.InterfaceIndex, - print_in6_addr( BestRoute.DestinationPrefix.Prefix.Ipv6.sin6_addr, 0, &gc), - BestRoute.DestinationPrefix.PrefixLength, - print_in6_addr( BestRoute.NextHop.Ipv6.sin6_addr, 0, &gc) ); + BestRoute.InterfaceIndex, + print_in6_addr( BestRoute.DestinationPrefix.Prefix.Ipv6.sin6_addr, 0, &gc), + BestRoute.DestinationPrefix.PrefixLength, + print_in6_addr( BestRoute.NextHop.Ipv6.sin6_addr, 0, &gc) ); msg( D_ROUTE, "GDG6: Metric=%d, Loopback=%d, AA=%d, I=%d", - (int) BestRoute.Metric, - (int) BestRoute.Loopback, - (int) BestRoute.AutoconfigureAddress, - (int) BestRoute.Immortal ); + (int) BestRoute.Metric, + (int) BestRoute.Loopback, + (int) BestRoute.AutoconfigureAddress, + (int) BestRoute.Immortal ); rgi6->gateway.addr_ipv6 = BestRoute.NextHop.Ipv6.sin6_addr; rgi6->adapter_index = BestRoute.InterfaceIndex; rgi6->flags |= RGI_ADDR_DEFINED | RGI_IFACE_DEFINED; /* on-link is signalled by receiving an empty (::) NextHop */ - if ( IN6_IS_ADDR_UNSPECIFIED(&BestRoute.NextHop.Ipv6.sin6_addr) ) - { - rgi6->flags |= RGI_ON_LINK; - } + if (IN6_IS_ADDR_UNSPECIFIED(&BestRoute.NextHop.Ipv6.sin6_addr) ) + { + rgi6->flags |= RGI_ON_LINK; + } - done: - gc_free (&gc); +done: + gc_free(&gc); } bool -add_route_ipapi (const struct route_ipv4 *r, const struct tuntap *tt, DWORD adapter_index) -{ - struct gc_arena gc = gc_new (); - bool ret = false; - DWORD status; - const DWORD if_index = (adapter_index == TUN_ADAPTER_INDEX_INVALID) ? windows_route_find_if_index (r, tt) : adapter_index; - - if (if_index != TUN_ADAPTER_INDEX_INVALID) - { - MIB_IPFORWARDROW fr; - CLEAR (fr); - fr.dwForwardDest = htonl (r->network); - fr.dwForwardMask = htonl (r->netmask); - fr.dwForwardPolicy = 0; - fr.dwForwardNextHop = htonl (r->gateway); - fr.dwForwardIfIndex = if_index; - fr.dwForwardType = 4; /* the next hop is not the final dest */ - fr.dwForwardProto = 3; /* PROTO_IP_NETMGMT */ - fr.dwForwardAge = 0; - fr.dwForwardNextHopAS = 0; - fr.dwForwardMetric1 = (r->flags & RT_METRIC_DEFINED) ? r->metric : 1; - fr.dwForwardMetric2 = METRIC_NOT_USED; - fr.dwForwardMetric3 = METRIC_NOT_USED; - fr.dwForwardMetric4 = METRIC_NOT_USED; - fr.dwForwardMetric5 = METRIC_NOT_USED; - - if ((r->network & r->netmask) != r->network) - msg (M_WARN, "Warning: address %s is not a network address in relation to netmask %s", - print_in_addr_t (r->network, 0, &gc), - print_in_addr_t (r->netmask, 0, &gc)); - - status = CreateIpForwardEntry (&fr); - - if (status == NO_ERROR) - ret = true; - else - { - /* failed, try increasing the metric to work around Vista issue */ - const unsigned int forward_metric_limit = 2048; /* iteratively retry higher metrics up to this limit */ - - for ( ; fr.dwForwardMetric1 <= forward_metric_limit; ++fr.dwForwardMetric1) - { - /* try a different forward type=3 ("the next hop is the final dest") in addition to 4. - --redirect-gateway over RRAS seems to need this. */ - for (fr.dwForwardType = 4; fr.dwForwardType >= 3; --fr.dwForwardType) - { - status = CreateIpForwardEntry (&fr); - if (status == NO_ERROR) - { - msg (D_ROUTE, "ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=%u and dwForwardType=%u", - (unsigned int)fr.dwForwardMetric1, - (unsigned int)fr.dwForwardType); - ret = true; - goto doublebreak; - } - else if (status != ERROR_BAD_ARGUMENTS) - goto doublebreak; - } - } - - doublebreak: - if (status != NO_ERROR) - msg (M_WARN, "ROUTE: route addition failed using CreateIpForwardEntry: %s [status=%u if_index=%u]", - strerror_win32 (status, &gc), - (unsigned int)status, - (unsigned int)if_index); - } - } - - gc_free (&gc); - return ret; +add_route_ipapi(const struct route_ipv4 *r, const struct tuntap *tt, DWORD adapter_index) +{ + struct gc_arena gc = gc_new(); + bool ret = false; + DWORD status; + const DWORD if_index = (adapter_index == TUN_ADAPTER_INDEX_INVALID) ? windows_route_find_if_index(r, tt) : adapter_index; + + if (if_index != TUN_ADAPTER_INDEX_INVALID) + { + MIB_IPFORWARDROW fr; + CLEAR(fr); + fr.dwForwardDest = htonl(r->network); + fr.dwForwardMask = htonl(r->netmask); + fr.dwForwardPolicy = 0; + fr.dwForwardNextHop = htonl(r->gateway); + fr.dwForwardIfIndex = if_index; + fr.dwForwardType = 4; /* the next hop is not the final dest */ + fr.dwForwardProto = 3; /* PROTO_IP_NETMGMT */ + fr.dwForwardAge = 0; + fr.dwForwardNextHopAS = 0; + fr.dwForwardMetric1 = (r->flags & RT_METRIC_DEFINED) ? r->metric : 1; + fr.dwForwardMetric2 = METRIC_NOT_USED; + fr.dwForwardMetric3 = METRIC_NOT_USED; + fr.dwForwardMetric4 = METRIC_NOT_USED; + fr.dwForwardMetric5 = METRIC_NOT_USED; + + if ((r->network & r->netmask) != r->network) + { + msg(M_WARN, "Warning: address %s is not a network address in relation to netmask %s", + print_in_addr_t(r->network, 0, &gc), + print_in_addr_t(r->netmask, 0, &gc)); + } + + status = CreateIpForwardEntry(&fr); + + if (status == NO_ERROR) + { + ret = true; + } + else + { + /* failed, try increasing the metric to work around Vista issue */ + const unsigned int forward_metric_limit = 2048; /* iteratively retry higher metrics up to this limit */ + + for (; fr.dwForwardMetric1 <= forward_metric_limit; ++fr.dwForwardMetric1) + { + /* try a different forward type=3 ("the next hop is the final dest") in addition to 4. + * --redirect-gateway over RRAS seems to need this. */ + for (fr.dwForwardType = 4; fr.dwForwardType >= 3; --fr.dwForwardType) + { + status = CreateIpForwardEntry(&fr); + if (status == NO_ERROR) + { + msg(D_ROUTE, "ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=%u and dwForwardType=%u", + (unsigned int)fr.dwForwardMetric1, + (unsigned int)fr.dwForwardType); + ret = true; + goto doublebreak; + } + else if (status != ERROR_BAD_ARGUMENTS) + { + goto doublebreak; + } + } + } + +doublebreak: + if (status != NO_ERROR) + { + msg(M_WARN, "ROUTE: route addition failed using CreateIpForwardEntry: %s [status=%u if_index=%u]", + strerror_win32(status, &gc), + (unsigned int)status, + (unsigned int)if_index); + } + } + } + + gc_free(&gc); + return ret; } bool -del_route_ipapi (const struct route_ipv4 *r, const struct tuntap *tt) +del_route_ipapi(const struct route_ipv4 *r, const struct tuntap *tt) { - struct gc_arena gc = gc_new (); - bool ret = false; - DWORD status; - const DWORD if_index = windows_route_find_if_index (r, tt); + struct gc_arena gc = gc_new(); + bool ret = false; + DWORD status; + const DWORD if_index = windows_route_find_if_index(r, tt); - if (if_index != TUN_ADAPTER_INDEX_INVALID) + if (if_index != TUN_ADAPTER_INDEX_INVALID) { - MIB_IPFORWARDROW fr; - CLEAR (fr); + MIB_IPFORWARDROW fr; + CLEAR(fr); - fr.dwForwardDest = htonl (r->network); - fr.dwForwardMask = htonl (r->netmask); - fr.dwForwardPolicy = 0; - fr.dwForwardNextHop = htonl (r->gateway); - fr.dwForwardIfIndex = if_index; + fr.dwForwardDest = htonl(r->network); + fr.dwForwardMask = htonl(r->netmask); + fr.dwForwardPolicy = 0; + fr.dwForwardNextHop = htonl(r->gateway); + fr.dwForwardIfIndex = if_index; - status = DeleteIpForwardEntry (&fr); + status = DeleteIpForwardEntry(&fr); - if (status == NO_ERROR) - ret = true; - else - msg (M_WARN, "ROUTE: route deletion failed using DeleteIpForwardEntry: %s", - strerror_win32 (status, &gc)); + if (status == NO_ERROR) + { + ret = true; + } + else + { + msg(M_WARN, "ROUTE: route deletion failed using DeleteIpForwardEntry: %s", + strerror_win32(status, &gc)); + } } - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } static bool -do_route_service (const bool add, const route_message_t *rt, const size_t size, HANDLE pipe) +do_route_service(const bool add, const route_message_t *rt, const size_t size, HANDLE pipe) { - DWORD len; - bool ret = false; - ack_message_t ack; - struct gc_arena gc = gc_new (); + DWORD len; + bool ret = false; + ack_message_t ack; + struct gc_arena gc = gc_new(); - if (!WriteFile (pipe, rt, size, &len, NULL) || - !ReadFile (pipe, &ack, sizeof (ack), &len, NULL)) + if (!WriteFile(pipe, rt, size, &len, NULL) + || !ReadFile(pipe, &ack, sizeof(ack), &len, NULL)) { - msg (M_WARN, "ROUTE: could not talk to service: %s [%lu]", - strerror_win32 (GetLastError (), &gc), GetLastError ()); - goto out; + msg(M_WARN, "ROUTE: 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, "ROUTE: route %s failed using service: %s [status=%u if_index=%lu]", - (add ? "addition" : "deletion"), strerror_win32 (ack.error_number, &gc), - ack.error_number, rt->iface.index); - goto out; + msg(M_WARN, "ROUTE: route %s failed using service: %s [status=%u if_index=%lu]", + (add ? "addition" : "deletion"), strerror_win32(ack.error_number, &gc), + ack.error_number, rt->iface.index); + goto out; } - ret = true; + ret = true; out: - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } static bool -do_route_ipv4_service (const bool add, const struct route_ipv4 *r, const struct tuntap *tt) +do_route_ipv4_service(const bool add, const struct route_ipv4 *r, const struct tuntap *tt) { - DWORD if_index = windows_route_find_if_index (r, tt); - if (if_index == ~0) - return false; - - route_message_t msg = { - .header = { - (add ? msg_add_route : msg_del_route), - sizeof (route_message_t), - 0 }, - .family = AF_INET, - .prefix.ipv4.s_addr = htonl(r->network), - .gateway.ipv4.s_addr = htonl(r->gateway), - .iface = { .index = if_index, .name = "" }, - .metric = (r->flags & RT_METRIC_DEFINED ? r->metric : -1) - }; + DWORD if_index = windows_route_find_if_index(r, tt); + if (if_index == ~0) + { + return false; + } - netmask_to_netbits (r->network, r->netmask, &msg.prefix_len); - if (msg.prefix_len == -1) - msg.prefix_len = 32; + route_message_t msg = { + .header = { + (add ? msg_add_route : msg_del_route), + sizeof(route_message_t), + 0 + }, + .family = AF_INET, + .prefix.ipv4.s_addr = htonl(r->network), + .gateway.ipv4.s_addr = htonl(r->gateway), + .iface = { .index = if_index, .name = "" }, + .metric = (r->flags & RT_METRIC_DEFINED ? r->metric : -1) + }; + + netmask_to_netbits(r->network, r->netmask, &msg.prefix_len); + if (msg.prefix_len == -1) + { + msg.prefix_len = 32; + } - return do_route_service (add, &msg, sizeof (msg), tt->options.msg_channel); + return do_route_service(add, &msg, sizeof(msg), tt->options.msg_channel); } static bool -do_route_ipv6_service (const bool add, const struct route_ipv6 *r, const struct tuntap *tt) +do_route_ipv6_service(const bool add, const struct route_ipv6 *r, const struct tuntap *tt) { - bool status; - route_message_t msg = { - .header = { - (add ? msg_add_route : msg_del_route), - sizeof (route_message_t), - 0 }, - .family = AF_INET6, - .prefix.ipv6 = r->network, - .prefix_len = r->netbits, - .gateway.ipv6 = r->gateway, - .iface = { .index = tt->adapter_index, .name = "" }, - .metric = ( (r->flags & RT_METRIC_DEFINED) ? r->metric : -1) - }; - - if ( r->adapter_index ) /* vpn server special route */ - msg.iface.index = r->adapter_index; + bool status; + route_message_t msg = { + .header = { + (add ? msg_add_route : msg_del_route), + sizeof(route_message_t), + 0 + }, + .family = AF_INET6, + .prefix.ipv6 = r->network, + .prefix_len = r->netbits, + .gateway.ipv6 = r->gateway, + .iface = { .index = tt->adapter_index, .name = "" }, + .metric = ( (r->flags & RT_METRIC_DEFINED) ? r->metric : -1) + }; + + if (r->adapter_index) /* vpn server special route */ + { + msg.iface.index = r->adapter_index; + } - /* In TUN mode we use a special link-local address as the next hop. - * The tapdrvr knows about it and will answer neighbor discovery packets. - */ - if (tt->type == DEV_TYPE_TUN) - inet_pton (AF_INET6, "fe80::8", &msg.gateway.ipv6); + /* In TUN mode we use a special link-local address as the next hop. + * The tapdrvr knows about it and will answer neighbor discovery packets. + */ + if (tt->type == DEV_TYPE_TUN) + { + inet_pton(AF_INET6, "fe80::8", &msg.gateway.ipv6); + } - if (msg.iface.index == TUN_ADAPTER_INDEX_INVALID) + if (msg.iface.index == TUN_ADAPTER_INDEX_INVALID) { - strncpy (msg.iface.name, tt->actual_name, sizeof (msg.iface.name)); - msg.iface.name[sizeof (msg.iface.name) - 1] = '\0'; + strncpy(msg.iface.name, tt->actual_name, sizeof(msg.iface.name)); + msg.iface.name[sizeof(msg.iface.name) - 1] = '\0'; } - status = do_route_service (add, &msg, sizeof (msg), tt->options.msg_channel); - msg (D_ROUTE, "IPv6 route %s via service %s", - add ? "addition" : "deletion", - status ? "succeeded" : "failed"); - return status; + status = do_route_service(add, &msg, sizeof(msg), tt->options.msg_channel); + msg(D_ROUTE, "IPv6 route %s via service %s", + add ? "addition" : "deletion", + status ? "succeeded" : "failed"); + return status; } static bool -add_route_service (const struct route_ipv4 *r, const struct tuntap *tt) +add_route_service(const struct route_ipv4 *r, const struct tuntap *tt) { - return do_route_ipv4_service (true, r, tt); + return do_route_ipv4_service(true, r, tt); } static bool -del_route_service (const struct route_ipv4 *r, const struct tuntap *tt) +del_route_service(const struct route_ipv4 *r, const struct tuntap *tt) { - return do_route_ipv4_service (false, r, tt); + return do_route_ipv4_service(false, r, tt); } static bool -add_route_ipv6_service (const struct route_ipv6 *r, const struct tuntap *tt) +add_route_ipv6_service(const struct route_ipv6 *r, const struct tuntap *tt) { - return do_route_ipv6_service (true, r, tt); + return do_route_ipv6_service(true, r, tt); } static bool -del_route_ipv6_service (const struct route_ipv6 *r, const struct tuntap *tt) +del_route_ipv6_service(const struct route_ipv6 *r, const struct tuntap *tt) { - return do_route_ipv6_service (false, r, tt); + return do_route_ipv6_service(false, r, tt); } static const char * -format_route_entry (const MIB_IPFORWARDROW *r, struct gc_arena *gc) -{ - struct buffer out = alloc_buf_gc (256, gc); - buf_printf (&out, "%s %s %s p=%d i=%d t=%d pr=%d a=%d h=%d m=%d/%d/%d/%d/%d", - print_in_addr_t (r->dwForwardDest, IA_NET_ORDER, gc), - print_in_addr_t (r->dwForwardMask, IA_NET_ORDER, gc), - print_in_addr_t (r->dwForwardNextHop, IA_NET_ORDER, gc), - (int)r->dwForwardPolicy, - (int)r->dwForwardIfIndex, - (int)r->dwForwardType, - (int)r->dwForwardProto, - (int)r->dwForwardAge, - (int)r->dwForwardNextHopAS, - (int)r->dwForwardMetric1, - (int)r->dwForwardMetric2, - (int)r->dwForwardMetric3, - (int)r->dwForwardMetric4, - (int)r->dwForwardMetric5); - return BSTR (&out); +format_route_entry(const MIB_IPFORWARDROW *r, struct gc_arena *gc) +{ + struct buffer out = alloc_buf_gc(256, gc); + buf_printf(&out, "%s %s %s p=%d i=%d t=%d pr=%d a=%d h=%d m=%d/%d/%d/%d/%d", + print_in_addr_t(r->dwForwardDest, IA_NET_ORDER, gc), + print_in_addr_t(r->dwForwardMask, IA_NET_ORDER, gc), + print_in_addr_t(r->dwForwardNextHop, IA_NET_ORDER, gc), + (int)r->dwForwardPolicy, + (int)r->dwForwardIfIndex, + (int)r->dwForwardType, + (int)r->dwForwardProto, + (int)r->dwForwardAge, + (int)r->dwForwardNextHopAS, + (int)r->dwForwardMetric1, + (int)r->dwForwardMetric2, + (int)r->dwForwardMetric3, + (int)r->dwForwardMetric4, + (int)r->dwForwardMetric5); + return BSTR(&out); } /* * Show current routing table */ void -show_routes (int msglev) +show_routes(int msglev) { - struct gc_arena gc = gc_new (); - int i; + struct gc_arena gc = gc_new(); + int i; - const MIB_IPFORWARDTABLE *rt = get_windows_routing_table (&gc); + const MIB_IPFORWARDTABLE *rt = get_windows_routing_table(&gc); - msg (msglev, "SYSTEM ROUTING TABLE"); - if (rt) + msg(msglev, "SYSTEM ROUTING TABLE"); + if (rt) { - for (i = 0; i < rt->dwNumEntries; ++i) - { - msg (msglev, "%s", format_route_entry (&rt->table[i], &gc)); - } + for (i = 0; i < rt->dwNumEntries; ++i) + { + msg(msglev, "%s", format_route_entry(&rt->table[i], &gc)); + } } - gc_free (&gc); + gc_free(&gc); } #elif defined(TARGET_LINUX) || defined(TARGET_ANDROID) void -get_default_gateway (struct route_gateway_info *rgi) +get_default_gateway(struct route_gateway_info *rgi) { - struct gc_arena gc = gc_new (); - int sd = -1; - char best_name[16]; - best_name[0] = 0; + struct gc_arena gc = gc_new(); + int sd = -1; + char best_name[16]; + best_name[0] = 0; - CLEAR(*rgi); + CLEAR(*rgi); #ifndef TARGET_ANDROID - /* get default gateway IP addr */ - { - FILE *fp = fopen ("/proc/net/route", "r"); - if (fp) - { - char line[256]; - int count = 0; - unsigned int lowest_metric = UINT_MAX; - in_addr_t best_gw = 0; - bool found = false; - while (fgets (line, sizeof (line), fp) != NULL) - { - if (count) - { - unsigned int net_x = 0; - unsigned int mask_x = 0; - unsigned int gw_x = 0; - unsigned int metric = 0; - unsigned int flags = 0; - char name[16]; - name[0] = 0; - const int np = sscanf (line, "%15s\t%x\t%x\t%x\t%*s\t%*s\t%d\t%x", - name, - &net_x, - &gw_x, - &flags, - &metric, - &mask_x); - if (np == 6 && (flags & IFF_UP)) - { - const in_addr_t net = ntohl (net_x); - const in_addr_t mask = ntohl (mask_x); - const in_addr_t gw = ntohl (gw_x); - - if (!net && !mask && metric < lowest_metric) - { - found = true; - best_gw = gw; - strcpy (best_name, name); - lowest_metric = metric; - } - } - } - ++count; - } - fclose (fp); - - if (found) - { - rgi->gateway.addr = best_gw; - rgi->flags |= RGI_ADDR_DEFINED; - if (!rgi->gateway.addr && best_name[0]) - rgi->flags |= RGI_ON_LINK; - } - } - } -#else - /* Android, set some pseudo GW, addr is in host byte order, - * Determining the default GW on Android 5.0+ is non trivial - * and serves almost no purpose since OpenVPN only uses the - * default GW address to add routes for networks that should - * NOT be routed over the VPN. Using a well known address - * (127.'d'.'g'.'w') for the default GW make detecting - * these routes easier from the controlling app. - */ - rgi->gateway.addr = 127 << 24 | 'd' << 16 | 'g' << 8 | 'w'; - rgi->flags |= RGI_ADDR_DEFINED; - strcpy(best_name, "android-gw"); -#endif + /* get default gateway IP addr */ + { + FILE *fp = fopen("/proc/net/route", "r"); + if (fp) + { + char line[256]; + int count = 0; + unsigned int lowest_metric = UINT_MAX; + in_addr_t best_gw = 0; + bool found = false; + while (fgets(line, sizeof(line), fp) != NULL) + { + if (count) + { + unsigned int net_x = 0; + unsigned int mask_x = 0; + unsigned int gw_x = 0; + unsigned int metric = 0; + unsigned int flags = 0; + char name[16]; + name[0] = 0; + const int np = sscanf(line, "%15s\t%x\t%x\t%x\t%*s\t%*s\t%d\t%x", + name, + &net_x, + &gw_x, + &flags, + &metric, + &mask_x); + if (np == 6 && (flags & IFF_UP)) + { + const in_addr_t net = ntohl(net_x); + const in_addr_t mask = ntohl(mask_x); + const in_addr_t gw = ntohl(gw_x); + + if (!net && !mask && metric < lowest_metric) + { + found = true; + best_gw = gw; + strcpy(best_name, name); + lowest_metric = metric; + } + } + } + ++count; + } + fclose(fp); + + if (found) + { + rgi->gateway.addr = best_gw; + rgi->flags |= RGI_ADDR_DEFINED; + if (!rgi->gateway.addr && best_name[0]) + { + rgi->flags |= RGI_ON_LINK; + } + } + } + } +#else /* ifndef TARGET_ANDROID */ + /* Android, set some pseudo GW, addr is in host byte order, + * Determining the default GW on Android 5.0+ is non trivial + * and serves almost no purpose since OpenVPN only uses the + * default GW address to add routes for networks that should + * NOT be routed over the VPN. Using a well known address + * (127.'d'.'g'.'w') for the default GW make detecting + * these routes easier from the controlling app. + */ + rgi->gateway.addr = 127 << 24 | 'd' << 16 | 'g' << 8 | 'w'; + rgi->flags |= RGI_ADDR_DEFINED; + strcpy(best_name, "android-gw"); +#endif /* ifndef TARGET_ANDROID */ + + /* scan adapter list */ + if (rgi->flags & RGI_ADDR_DEFINED) + { + struct ifreq *ifr, *ifend; + in_addr_t addr, netmask; + struct ifreq ifreq; + struct ifconf ifc; + struct ifreq ifs[20]; /* Maximum number of interfaces to scan */ - /* scan adapter list */ - if (rgi->flags & RGI_ADDR_DEFINED) - { - struct ifreq *ifr, *ifend; - in_addr_t addr, netmask; - struct ifreq ifreq; - struct ifconf ifc; - struct ifreq ifs[20]; /* Maximum number of interfaces to scan */ - - if ((sd = socket (AF_INET, SOCK_DGRAM, 0)) < 0) - { - msg (M_WARN, "GDG: socket() failed"); - goto done; - } - ifc.ifc_len = sizeof (ifs); - ifc.ifc_req = ifs; - if (ioctl (sd, SIOCGIFCONF, &ifc) < 0) - { - msg (M_WARN, "GDG: ioctl(SIOCGIFCONF) failed"); - goto done; - } - - /* scan through interface list */ - ifend = ifs + (ifc.ifc_len / sizeof (struct ifreq)); - for (ifr = ifc.ifc_req; ifr < ifend; ifr++) - { - if (ifr->ifr_addr.sa_family == AF_INET) - { - /* get interface addr */ - addr = ntohl(((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr); - - /* get interface name */ - strncpynt (ifreq.ifr_name, ifr->ifr_name, sizeof (ifreq.ifr_name)); - - /* check that the interface is up */ - if (ioctl (sd, SIOCGIFFLAGS, &ifreq) < 0) - continue; - if (!(ifreq.ifr_flags & IFF_UP)) - continue; - - if (rgi->flags & RGI_ON_LINK) - { - /* check that interface name of current interface - matches interface name of best default route */ - if (strcmp(ifreq.ifr_name, best_name)) - continue; + if ((sd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) + { + msg(M_WARN, "GDG: socket() failed"); + goto done; + } + ifc.ifc_len = sizeof(ifs); + ifc.ifc_req = ifs; + if (ioctl(sd, SIOCGIFCONF, &ifc) < 0) + { + msg(M_WARN, "GDG: ioctl(SIOCGIFCONF) failed"); + goto done; + } + + /* scan through interface list */ + ifend = ifs + (ifc.ifc_len / sizeof(struct ifreq)); + for (ifr = ifc.ifc_req; ifr < ifend; ifr++) + { + if (ifr->ifr_addr.sa_family == AF_INET) + { + /* get interface addr */ + addr = ntohl(((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr); + + /* get interface name */ + strncpynt(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name)); + + /* check that the interface is up */ + if (ioctl(sd, SIOCGIFFLAGS, &ifreq) < 0) + { + continue; + } + if (!(ifreq.ifr_flags & IFF_UP)) + { + continue; + } + + if (rgi->flags & RGI_ON_LINK) + { + /* check that interface name of current interface + * matches interface name of best default route */ + if (strcmp(ifreq.ifr_name, best_name)) + { + continue; + } #if 0 - /* if point-to-point link, use remote addr as route gateway */ - if ((ifreq.ifr_flags & IFF_POINTOPOINT) && ioctl (sd, SIOCGIFDSTADDR, &ifreq) >= 0) - { - rgi->gateway.addr = ntohl(((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr); - if (rgi->gateway.addr) - rgi->flags &= ~RGI_ON_LINK; - } + /* if point-to-point link, use remote addr as route gateway */ + if ((ifreq.ifr_flags & IFF_POINTOPOINT) && ioctl(sd, SIOCGIFDSTADDR, &ifreq) >= 0) + { + rgi->gateway.addr = ntohl(((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr); + if (rgi->gateway.addr) + { + rgi->flags &= ~RGI_ON_LINK; + } + } #endif - } - else - { - /* get interface netmask */ - if (ioctl (sd, SIOCGIFNETMASK, &ifreq) < 0) - continue; - netmask = ntohl(((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr); - - /* check that interface matches default route */ - if (((rgi->gateway.addr ^ addr) & netmask) != 0) - continue; - - /* save netmask */ - rgi->gateway.netmask = netmask; - rgi->flags |= RGI_NETMASK_DEFINED; - } - - /* save iface name */ - strncpynt (rgi->iface, ifreq.ifr_name, sizeof(rgi->iface)); - rgi->flags |= RGI_IFACE_DEFINED; - - /* now get the hardware address. */ - memset (&ifreq.ifr_hwaddr, 0, sizeof (struct sockaddr)); - if (ioctl (sd, SIOCGIFHWADDR, &ifreq) < 0) - { - msg (M_WARN, "GDG: SIOCGIFHWADDR(%s) failed", ifreq.ifr_name); - goto done; - } - memcpy (rgi->hwaddr, &ifreq.ifr_hwaddr.sa_data, 6); - rgi->flags |= RGI_HWADDR_DEFINED; - - break; - } - } - } - - done: - if (sd >= 0) - close (sd); - gc_free (&gc); + } + else + { + /* get interface netmask */ + if (ioctl(sd, SIOCGIFNETMASK, &ifreq) < 0) + { + continue; + } + netmask = ntohl(((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr); + + /* check that interface matches default route */ + if (((rgi->gateway.addr ^ addr) & netmask) != 0) + { + continue; + } + + /* save netmask */ + rgi->gateway.netmask = netmask; + rgi->flags |= RGI_NETMASK_DEFINED; + } + + /* save iface name */ + strncpynt(rgi->iface, ifreq.ifr_name, sizeof(rgi->iface)); + rgi->flags |= RGI_IFACE_DEFINED; + + /* now get the hardware address. */ + memset(&ifreq.ifr_hwaddr, 0, sizeof(struct sockaddr)); + if (ioctl(sd, SIOCGIFHWADDR, &ifreq) < 0) + { + msg(M_WARN, "GDG: SIOCGIFHWADDR(%s) failed", ifreq.ifr_name); + goto done; + } + memcpy(rgi->hwaddr, &ifreq.ifr_hwaddr.sa_data, 6); + rgi->flags |= RGI_HWADDR_DEFINED; + + break; + } + } + } + +done: + if (sd >= 0) + { + close(sd); + } + gc_free(&gc); } /* IPv6 implementation using netlink @@ -3070,14 +3336,14 @@ get_default_gateway (struct route_gateway_info *rgi) * http://www.virtualbox.org/svn/vbox/trunk/src/VBox/NetworkServices/NAT/rtmon_linux.c */ struct rtreq { - struct nlmsghdr nh; - struct rtmsg rtm; - char attrbuf[512]; + struct nlmsghdr nh; + struct rtmsg rtm; + char attrbuf[512]; }; void get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, - const struct in6_addr *dest) + const struct in6_addr *dest) { int nls = -1; struct rtreq rtreq; @@ -3089,8 +3355,10 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, CLEAR(*rgi6); nls = socket( PF_NETLINK, SOCK_RAW, NETLINK_ROUTE ); - if ( nls < 0 ) - { msg(M_WARN|M_ERRNO, "GDG6: socket() failed" ); goto done; } + if (nls < 0) + { + msg(M_WARN|M_ERRNO, "GDG6: socket() failed" ); goto done; + } /* bind() is not needed, no unsolicited msgs coming in */ @@ -3098,10 +3366,10 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, */ CLEAR(rtreq); rtreq.nh.nlmsg_type = RTM_GETROUTE; - rtreq.nh.nlmsg_flags = NLM_F_REQUEST; /* best match only */ + rtreq.nh.nlmsg_flags = NLM_F_REQUEST; /* best match only */ rtreq.rtm.rtm_family = AF_INET6; - rtreq.rtm.rtm_src_len = 0; /* not source dependent */ - rtreq.rtm.rtm_dst_len = 128; /* exact dst */ + rtreq.rtm.rtm_src_len = 0; /* not source dependent */ + rtreq.rtm.rtm_dst_len = 128; /* exact dst */ rtreq.rtm.rtm_table = RT_TABLE_MAIN; rtreq.rtm.rtm_protocol = RTPROT_UNSPEC; rtreq.nh.nlmsg_len = NLMSG_SPACE(sizeof(rtreq.rtm)); @@ -3110,27 +3378,35 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, rta = (struct rtattr *)(((char *) &rtreq)+NLMSG_ALIGN(rtreq.nh.nlmsg_len)); rta->rta_type = RTA_DST; rta->rta_len = RTA_LENGTH(16); - rtreq.nh.nlmsg_len = NLMSG_ALIGN(rtreq.nh.nlmsg_len) + - RTA_LENGTH(16); + rtreq.nh.nlmsg_len = NLMSG_ALIGN(rtreq.nh.nlmsg_len) + +RTA_LENGTH(16); - if ( dest == NULL ) /* ::, unspecified */ - memset( RTA_DATA(rta), 0, 16 ); /* :: = all-zero */ + if (dest == NULL) /* ::, unspecified */ + { + memset( RTA_DATA(rta), 0, 16 ); /* :: = all-zero */ + } else - memcpy( RTA_DATA(rta), (void *)dest, 16 ); + { + memcpy( RTA_DATA(rta), (void *)dest, 16 ); + } /* send and receive reply */ - if ( send( nls, &rtreq, rtreq.nh.nlmsg_len, 0 ) < 0 ) - { msg(M_WARN|M_ERRNO, "GDG6: send() failed" ); goto done; } + if (send( nls, &rtreq, rtreq.nh.nlmsg_len, 0 ) < 0) + { + msg(M_WARN|M_ERRNO, "GDG6: send() failed" ); goto done; + } ssize = recv(nls, rtbuf, sizeof(rtbuf), MSG_TRUNC); if (ssize < 0) - { msg(M_WARN|M_ERRNO, "GDG6: recv() failed" ); goto done; } + { + msg(M_WARN|M_ERRNO, "GDG6: recv() failed" ); goto done; + } if (ssize > sizeof(rtbuf)) { - msg(M_WARN, "get_default_gateway_ipv6: returned message too big for buffer (%d>%d)", (int)ssize, (int)sizeof(rtbuf) ); - goto done; + msg(M_WARN, "get_default_gateway_ipv6: returned message too big for buffer (%d>%d)", (int)ssize, (int)sizeof(rtbuf) ); + goto done; } struct nlmsghdr *nh; @@ -3139,74 +3415,91 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, NLMSG_OK(nh, ssize); nh = NLMSG_NEXT(nh, ssize)) { - struct rtmsg *rtm; - int attrlen; - - if (nh->nlmsg_type == NLMSG_DONE) { break; } - - if (nh->nlmsg_type == NLMSG_ERROR) { - struct nlmsgerr *ne = (struct nlmsgerr *)NLMSG_DATA(nh); - msg(M_WARN, "GDG6: NLSMG_ERROR: error %d\n", ne->error); - break; - } - - if (nh->nlmsg_type != RTM_NEWROUTE) { - /* shouldn't happen */ - msg(M_WARN, "GDG6: unexpected msg_type %d", nh->nlmsg_type ); - continue; - } - - rtm = (struct rtmsg *)NLMSG_DATA(nh); - attrlen = RTM_PAYLOAD(nh); - - /* we're only looking for routes in the main table, as "we have - * no IPv6" will lead to a lookup result in "Local" (::/0 reject) - */ - if (rtm->rtm_family != AF_INET6 || - rtm->rtm_table != RT_TABLE_MAIN) - { continue; } /* we're not interested */ - - for (rta = RTM_RTA(rtm); - RTA_OK(rta, attrlen); - rta = RTA_NEXT(rta, attrlen)) - { - if (rta->rta_type == RTA_GATEWAY) { - if ( RTA_PAYLOAD(rta) != sizeof(struct in6_addr) ) - { msg(M_WARN, "GDG6: RTA_GW size mismatch"); continue; } - rgi6->gateway.addr_ipv6 = *(struct in6_addr*) RTA_DATA(rta); - rgi6->flags |= RGI_ADDR_DEFINED; - } - else if (rta->rta_type == RTA_OIF) { - char ifname[IF_NAMESIZE+1]; - int oif; - if ( RTA_PAYLOAD(rta) != sizeof(oif) ) - { msg(M_WARN, "GDG6: oif size mismatch"); continue; } - - memcpy(&oif, RTA_DATA(rta), sizeof(oif)); - if_indextoname(oif,ifname); - strncpy( rgi6->iface, ifname, sizeof(rgi6->iface)-1 ); - rgi6->flags |= RGI_IFACE_DEFINED; - } - } + struct rtmsg *rtm; + int attrlen; + + if (nh->nlmsg_type == NLMSG_DONE) + { + break; + } + + if (nh->nlmsg_type == NLMSG_ERROR) + { + struct nlmsgerr *ne = (struct nlmsgerr *)NLMSG_DATA(nh); + msg(M_WARN, "GDG6: NLSMG_ERROR: error %d\n", ne->error); + break; + } + + if (nh->nlmsg_type != RTM_NEWROUTE) + { + /* shouldn't happen */ + msg(M_WARN, "GDG6: unexpected msg_type %d", nh->nlmsg_type ); + continue; + } + + rtm = (struct rtmsg *)NLMSG_DATA(nh); + attrlen = RTM_PAYLOAD(nh); + + /* we're only looking for routes in the main table, as "we have + * no IPv6" will lead to a lookup result in "Local" (::/0 reject) + */ + if (rtm->rtm_family != AF_INET6 + || rtm->rtm_table != RT_TABLE_MAIN) + { + continue; + } /* we're not interested */ + + for (rta = RTM_RTA(rtm); + RTA_OK(rta, attrlen); + rta = RTA_NEXT(rta, attrlen)) + { + if (rta->rta_type == RTA_GATEWAY) + { + if (RTA_PAYLOAD(rta) != sizeof(struct in6_addr) ) + { + msg(M_WARN, "GDG6: RTA_GW size mismatch"); continue; + } + rgi6->gateway.addr_ipv6 = *(struct in6_addr *) RTA_DATA(rta); + rgi6->flags |= RGI_ADDR_DEFINED; + } + else if (rta->rta_type == RTA_OIF) + { + char ifname[IF_NAMESIZE+1]; + int oif; + if (RTA_PAYLOAD(rta) != sizeof(oif) ) + { + msg(M_WARN, "GDG6: oif size mismatch"); continue; + } + + memcpy(&oif, RTA_DATA(rta), sizeof(oif)); + if_indextoname(oif,ifname); + strncpy( rgi6->iface, ifname, sizeof(rgi6->iface)-1 ); + rgi6->flags |= RGI_IFACE_DEFINED; + } + } } /* if we have an interface but no gateway, the destination is on-link */ if ( ( rgi6->flags & (RGI_IFACE_DEFINED|RGI_ADDR_DEFINED) ) == - RGI_IFACE_DEFINED ) + RGI_IFACE_DEFINED) { - rgi6->flags |= (RGI_ADDR_DEFINED | RGI_ON_LINK); - if ( dest ) - rgi6->gateway.addr_ipv6 = *dest; + rgi6->flags |= (RGI_ADDR_DEFINED | RGI_ON_LINK); + if (dest) + { + rgi6->gateway.addr_ipv6 = *dest; + } } - done: +done: if (nls >= 0) - close (nls); + { + close(nls); + } } -#elif defined(TARGET_DARWIN) || defined(TARGET_SOLARIS) || \ - defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) || \ - defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) +#elif defined(TARGET_DARWIN) || defined(TARGET_SOLARIS) \ + || defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) \ + || defined(TARGET_OPENBSD) || defined(TARGET_NETBSD) #include <sys/types.h> #include <sys/socket.h> @@ -3215,8 +3508,8 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, #include <net/if_dl.h> struct rtmsg { - struct rt_msghdr m_rtm; - char m_space[512]; + struct rt_msghdr m_rtm; + char m_space[512]; }; /* the route socket code is identical for all 4 supported BSDs and for @@ -3232,25 +3525,25 @@ struct rtmsg { */ #if defined(TARGET_DARWIN) -# define ROUNDUP(a) \ - ((a) > 0 ? (1 + (((a) - 1) | (sizeof(uint32_t) - 1))) : sizeof(uint32_t)) +#define ROUNDUP(a) \ + ((a) > 0 ? (1 + (((a) - 1) | (sizeof(uint32_t) - 1))) : sizeof(uint32_t)) #else -# define ROUNDUP(a) \ - ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) +#define ROUNDUP(a) \ + ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) #endif #if defined(TARGET_SOLARIS) #define NEXTADDR(w, u) \ - if (rtm_addrs & (w)) {\ - l = ROUNDUP(sizeof(u)); memmove(cp, &(u), l); cp += l;\ - } + if (rtm_addrs & (w)) { \ + l = ROUNDUP(sizeof(u)); memmove(cp, &(u), l); cp += l; \ + } #define ADVANCE(x, n) (x += ROUNDUP(sizeof(struct sockaddr_in))) -#else +#else /* if defined(TARGET_SOLARIS) */ #define NEXTADDR(w, u) \ - if (rtm_addrs & (w)) {\ - l = ROUNDUP( ((struct sockaddr *)&(u))->sa_len); memmove(cp, &(u), l); cp += l;\ - } + if (rtm_addrs & (w)) { \ + l = ROUNDUP( ((struct sockaddr *)&(u))->sa_len); memmove(cp, &(u), l); cp += l; \ + } #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) #endif @@ -3258,193 +3551,206 @@ struct rtmsg { #define max(a,b) ((a) > (b) ? (a) : (b)) void -get_default_gateway (struct route_gateway_info *rgi) +get_default_gateway(struct route_gateway_info *rgi) { - struct gc_arena gc = gc_new (); - struct rtmsg m_rtmsg; - int sockfd = -1; - int seq, l, pid, rtm_addrs; - unsigned int i; - struct sockaddr so_dst, so_mask; - char *cp = m_rtmsg.m_space; - struct sockaddr *gate = NULL, *ifp = NULL, *sa; - struct rt_msghdr *rtm_aux; + struct gc_arena gc = gc_new(); + struct rtmsg m_rtmsg; + int sockfd = -1; + int seq, l, pid, rtm_addrs; + unsigned int i; + struct sockaddr so_dst, so_mask; + char *cp = m_rtmsg.m_space; + struct sockaddr *gate = NULL, *ifp = NULL, *sa; + struct rt_msghdr *rtm_aux; -# define rtm m_rtmsg.m_rtm +#define rtm m_rtmsg.m_rtm - CLEAR(*rgi); + CLEAR(*rgi); - /* setup data to send to routing socket */ - pid = getpid(); - seq = 0; - rtm_addrs = RTA_DST | RTA_NETMASK | RTA_IFP; + /* setup data to send to routing socket */ + pid = getpid(); + seq = 0; + rtm_addrs = RTA_DST | RTA_NETMASK | RTA_IFP; - bzero(&m_rtmsg, sizeof(m_rtmsg)); - bzero(&so_dst, sizeof(so_dst)); - bzero(&so_mask, sizeof(so_mask)); - bzero(&rtm, sizeof(struct rt_msghdr)); + bzero(&m_rtmsg, sizeof(m_rtmsg)); + bzero(&so_dst, sizeof(so_dst)); + bzero(&so_mask, sizeof(so_mask)); + bzero(&rtm, sizeof(struct rt_msghdr)); - rtm.rtm_type = RTM_GET; - rtm.rtm_flags = RTF_UP | RTF_GATEWAY; - rtm.rtm_version = RTM_VERSION; - rtm.rtm_seq = ++seq; - rtm.rtm_addrs = rtm_addrs; + rtm.rtm_type = RTM_GET; + rtm.rtm_flags = RTF_UP | RTF_GATEWAY; + rtm.rtm_version = RTM_VERSION; + rtm.rtm_seq = ++seq; + rtm.rtm_addrs = rtm_addrs; - so_dst.sa_family = AF_INET; - so_mask.sa_family = AF_INET; + so_dst.sa_family = AF_INET; + so_mask.sa_family = AF_INET; #ifndef TARGET_SOLARIS - so_dst.sa_len = sizeof(struct sockaddr_in); - so_mask.sa_len = sizeof(struct sockaddr_in); + so_dst.sa_len = sizeof(struct sockaddr_in); + so_mask.sa_len = sizeof(struct sockaddr_in); #endif - NEXTADDR(RTA_DST, so_dst); - NEXTADDR(RTA_NETMASK, so_mask); - - rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; - - /* transact with routing socket */ - sockfd = socket(PF_ROUTE, SOCK_RAW, 0); - if (sockfd < 0) - { - msg (M_WARN, "GDG: socket #1 failed"); - goto done; - } - if (write(sockfd, (char *)&m_rtmsg, l) < 0) - { - msg (M_WARN, "GDG: problem writing to routing socket"); - goto done; - } - do { - l = read(sockfd, (char *)&m_rtmsg, sizeof(m_rtmsg)); - } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); - close(sockfd); - sockfd = -1; - - /* extract return data from routing socket */ - rtm_aux = &rtm; - cp = ((char *)(rtm_aux + 1)); - if (rtm_aux->rtm_addrs) - { - for (i = 1; i; i <<= 1) - { - if (i & rtm_aux->rtm_addrs) - { - sa = (struct sockaddr *)cp; - if (i == RTA_GATEWAY ) - gate = sa; - else if (i == RTA_IFP) - ifp = sa; - ADVANCE(cp, sa); - } - } - } - else - goto done; - - /* get gateway addr and interface name */ - if (gate != NULL ) - { - /* get default gateway addr */ - rgi->gateway.addr = ntohl(((struct sockaddr_in *)gate)->sin_addr.s_addr); - if (rgi->gateway.addr) - rgi->flags |= RGI_ADDR_DEFINED; - - if (ifp) - { - /* get interface name */ - const struct sockaddr_dl *adl = (struct sockaddr_dl *) ifp; - if (adl->sdl_nlen && adl->sdl_nlen < sizeof(rgi->iface)) - { - memcpy (rgi->iface, adl->sdl_data, adl->sdl_nlen); - rgi->iface[adl->sdl_nlen] = '\0'; - rgi->flags |= RGI_IFACE_DEFINED; - } - } - } - - /* get netmask of interface that owns default gateway */ - if (rgi->flags & RGI_IFACE_DEFINED) { - struct ifreq ifr; - - sockfd = socket(AF_INET, SOCK_DGRAM, 0); + NEXTADDR(RTA_DST, so_dst); + NEXTADDR(RTA_NETMASK, so_mask); + + rtm.rtm_msglen = l = cp - (char *)&m_rtmsg; + + /* transact with routing socket */ + sockfd = socket(PF_ROUTE, SOCK_RAW, 0); if (sockfd < 0) - { - msg (M_WARN, "GDG: socket #2 failed"); - goto done; - } - - CLEAR(ifr); - ifr.ifr_addr.sa_family = AF_INET; - strncpynt(ifr.ifr_name, rgi->iface, IFNAMSIZ); - - if (ioctl(sockfd, SIOCGIFNETMASK, (char *)&ifr) < 0) - { - msg (M_WARN, "GDG: ioctl #1 failed"); - goto done; - } + { + msg(M_WARN, "GDG: socket #1 failed"); + goto done; + } + if (write(sockfd, (char *)&m_rtmsg, l) < 0) + { + msg(M_WARN, "GDG: problem writing to routing socket"); + goto done; + } + do { + l = read(sockfd, (char *)&m_rtmsg, sizeof(m_rtmsg)); + } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); close(sockfd); sockfd = -1; - rgi->gateway.netmask = ntohl(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr); - rgi->flags |= RGI_NETMASK_DEFINED; - } - - /* try to read MAC addr associated with interface that owns default gateway */ - if (rgi->flags & RGI_IFACE_DEFINED) - { - struct ifconf ifc; - struct ifreq *ifr; - const int bufsize = 4096; - char *buffer; - - buffer = (char *) gc_malloc (bufsize, true, &gc); - sockfd = socket(AF_INET, SOCK_DGRAM, 0); - if (sockfd < 0) - { - msg (M_WARN, "GDG: socket #3 failed"); - goto done; - } - - ifc.ifc_len = bufsize; - ifc.ifc_buf = buffer; - - if (ioctl(sockfd, SIOCGIFCONF, (char *)&ifc) < 0) - { - msg (M_WARN, "GDG: ioctl #2 failed"); - goto done; - } - close(sockfd); - sockfd = -1; - - for (cp = buffer; cp <= buffer + ifc.ifc_len - sizeof(struct ifreq); ) - { - ifr = (struct ifreq *)cp; + /* extract return data from routing socket */ + rtm_aux = &rtm; + cp = ((char *)(rtm_aux + 1)); + if (rtm_aux->rtm_addrs) + { + for (i = 1; i; i <<= 1) + { + if (i & rtm_aux->rtm_addrs) + { + sa = (struct sockaddr *)cp; + if (i == RTA_GATEWAY) + { + gate = sa; + } + else if (i == RTA_IFP) + { + ifp = sa; + } + ADVANCE(cp, sa); + } + } + } + else + { + goto done; + } + + /* get gateway addr and interface name */ + if (gate != NULL) + { + /* get default gateway addr */ + rgi->gateway.addr = ntohl(((struct sockaddr_in *)gate)->sin_addr.s_addr); + if (rgi->gateway.addr) + { + rgi->flags |= RGI_ADDR_DEFINED; + } + + if (ifp) + { + /* get interface name */ + const struct sockaddr_dl *adl = (struct sockaddr_dl *) ifp; + if (adl->sdl_nlen && adl->sdl_nlen < sizeof(rgi->iface)) + { + memcpy(rgi->iface, adl->sdl_data, adl->sdl_nlen); + rgi->iface[adl->sdl_nlen] = '\0'; + rgi->flags |= RGI_IFACE_DEFINED; + } + } + } + + /* get netmask of interface that owns default gateway */ + if (rgi->flags & RGI_IFACE_DEFINED) + { + struct ifreq ifr; + + sockfd = socket(AF_INET, SOCK_DGRAM, 0); + if (sockfd < 0) + { + msg(M_WARN, "GDG: socket #2 failed"); + goto done; + } + + CLEAR(ifr); + ifr.ifr_addr.sa_family = AF_INET; + strncpynt(ifr.ifr_name, rgi->iface, IFNAMSIZ); + + if (ioctl(sockfd, SIOCGIFNETMASK, (char *)&ifr) < 0) + { + msg(M_WARN, "GDG: ioctl #1 failed"); + goto done; + } + close(sockfd); + sockfd = -1; + + rgi->gateway.netmask = ntohl(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr); + rgi->flags |= RGI_NETMASK_DEFINED; + } + + /* try to read MAC addr associated with interface that owns default gateway */ + if (rgi->flags & RGI_IFACE_DEFINED) + { + struct ifconf ifc; + struct ifreq *ifr; + const int bufsize = 4096; + char *buffer; + + buffer = (char *) gc_malloc(bufsize, true, &gc); + sockfd = socket(AF_INET, SOCK_DGRAM, 0); + if (sockfd < 0) + { + msg(M_WARN, "GDG: socket #3 failed"); + goto done; + } + + ifc.ifc_len = bufsize; + ifc.ifc_buf = buffer; + + if (ioctl(sockfd, SIOCGIFCONF, (char *)&ifc) < 0) + { + msg(M_WARN, "GDG: ioctl #2 failed"); + goto done; + } + close(sockfd); + sockfd = -1; + + for (cp = buffer; cp <= buffer + ifc.ifc_len - sizeof(struct ifreq); ) + { + ifr = (struct ifreq *)cp; #if defined(TARGET_SOLARIS) - const size_t len = sizeof(ifr->ifr_name) + sizeof(ifr->ifr_addr); + const size_t len = sizeof(ifr->ifr_name) + sizeof(ifr->ifr_addr); #else - const size_t len = sizeof(ifr->ifr_name) + max(sizeof(ifr->ifr_addr), ifr->ifr_addr.sa_len); + const size_t len = sizeof(ifr->ifr_name) + max(sizeof(ifr->ifr_addr), ifr->ifr_addr.sa_len); #endif - if (!ifr->ifr_addr.sa_family) - break; - if (!strncmp(ifr->ifr_name, rgi->iface, IFNAMSIZ)) - { - if (ifr->ifr_addr.sa_family == AF_LINK) - { - struct sockaddr_dl *sdl = (struct sockaddr_dl *)&ifr->ifr_addr; - memcpy(rgi->hwaddr, LLADDR(sdl), 6); - rgi->flags |= RGI_HWADDR_DEFINED; - } - } - cp += len; - } - } - - done: - if (sockfd >= 0) - close(sockfd); - gc_free (&gc); + if (!ifr->ifr_addr.sa_family) + { + break; + } + if (!strncmp(ifr->ifr_name, rgi->iface, IFNAMSIZ)) + { + if (ifr->ifr_addr.sa_family == AF_LINK) + { + struct sockaddr_dl *sdl = (struct sockaddr_dl *)&ifr->ifr_addr; + memcpy(rgi->hwaddr, LLADDR(sdl), 6); + rgi->flags |= RGI_HWADDR_DEFINED; + } + } + cp += len; + } + } + +done: + if (sockfd >= 0) + { + close(sockfd); + } + gc_free(&gc); } /* BSD implementation using routing socket (as does IPv4) @@ -3455,13 +3761,13 @@ get_default_gateway (struct route_gateway_info *rgi) /* Solaris has no length field - this is ugly, but less #ifdef in total */ #if defined(TARGET_SOLARIS) -# undef ADVANCE -# define ADVANCE(x, n) (x += ROUNDUP(sizeof(struct sockaddr_in6))) +#undef ADVANCE +#define ADVANCE(x, n) (x += ROUNDUP(sizeof(struct sockaddr_in6))) #endif void get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, - const struct in6_addr *dest) + const struct in6_addr *dest) { struct rtmsg m_rtmsg; @@ -3493,12 +3799,12 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, so_dst.sin6_family = AF_INET6; so_mask.sin6_family = AF_INET6; - if ( dest != NULL && /* specific host? */ - !IN6_IS_ADDR_UNSPECIFIED(dest) ) + if (dest != NULL /* specific host? */ + && !IN6_IS_ADDR_UNSPECIFIED(dest) ) { - so_dst.sin6_addr = *dest; - /* :: needs /0 "netmask", host route wants "no netmask */ - rtm_addrs &= ~RTA_NETMASK; + so_dst.sin6_addr = *dest; + /* :: needs /0 "netmask", host route wants "no netmask */ + rtm_addrs &= ~RTA_NETMASK; } rtm.rtm_addrs = rtm_addrs; @@ -3517,18 +3823,18 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, sockfd = socket(PF_ROUTE, SOCK_RAW, 0); if (sockfd < 0) { - msg (M_WARN, "GDG6: socket #1 failed"); - goto done; + msg(M_WARN, "GDG6: socket #1 failed"); + goto done; } if (write(sockfd, (char *)&m_rtmsg, l) < 0) { - msg (M_WARN, "GDG6: problem writing to routing socket"); - goto done; + msg(M_WARN, "GDG6: problem writing to routing socket"); + goto done; } do { - l = read(sockfd, (char *)&m_rtmsg, sizeof(m_rtmsg)); + l = read(sockfd, (char *)&m_rtmsg, sizeof(m_rtmsg)); } while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid)); @@ -3540,70 +3846,78 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, cp = ((char *)(rtm_aux + 1)); if (rtm_aux->rtm_addrs) { - for (i = 1; i; i <<= 1) - { - if (i & rtm_aux->rtm_addrs) - { - sa = (struct sockaddr *)cp; - if (i == RTA_GATEWAY ) - gate = sa; - else if (i == RTA_IFP) - ifp = sa; - ADVANCE(cp, sa); - } - } + for (i = 1; i; i <<= 1) + { + if (i & rtm_aux->rtm_addrs) + { + sa = (struct sockaddr *)cp; + if (i == RTA_GATEWAY) + { + gate = sa; + } + else if (i == RTA_IFP) + { + ifp = sa; + } + ADVANCE(cp, sa); + } + } } else - goto done; + { + goto done; + } /* get gateway addr and interface name */ - if (gate != NULL ) + if (gate != NULL) { - struct sockaddr_in6 * s6 = (struct sockaddr_in6 *)gate; - struct in6_addr gw = s6->sin6_addr; + struct sockaddr_in6 *s6 = (struct sockaddr_in6 *)gate; + struct in6_addr gw = s6->sin6_addr; #ifndef TARGET_SOLARIS - /* You do not really want to know... from FreeBSD's route.c - * (KAME encodes the 16 bit scope_id in s6_addr[2] + [3], - * but for a correct link-local address these must be :0000: ) - */ - if ( gate->sa_len == sizeof(struct sockaddr_in6) && - IN6_IS_ADDR_LINKLOCAL(&gw) ) - { - gw.s6_addr[2] = gw.s6_addr[3] = 0; - } - - if ( gate->sa_len != sizeof(struct sockaddr_in6) || - IN6_IS_ADDR_UNSPECIFIED(&gw) ) - { - rgi6->flags |= RGI_ON_LINK; - } - else + /* You do not really want to know... from FreeBSD's route.c + * (KAME encodes the 16 bit scope_id in s6_addr[2] + [3], + * but for a correct link-local address these must be :0000: ) + */ + if (gate->sa_len == sizeof(struct sockaddr_in6) + && IN6_IS_ADDR_LINKLOCAL(&gw) ) + { + gw.s6_addr[2] = gw.s6_addr[3] = 0; + } + + if (gate->sa_len != sizeof(struct sockaddr_in6) + || IN6_IS_ADDR_UNSPECIFIED(&gw) ) + { + rgi6->flags |= RGI_ON_LINK; + } + else #endif - rgi6->gateway.addr_ipv6 = gw; - rgi6->flags |= RGI_ADDR_DEFINED; + rgi6->gateway.addr_ipv6 = gw; + rgi6->flags |= RGI_ADDR_DEFINED; - if (ifp) - { - /* get interface name */ - const struct sockaddr_dl *adl = (struct sockaddr_dl *) ifp; - if (adl->sdl_nlen && adl->sdl_nlen < sizeof(rgi6->iface)) - { - memcpy (rgi6->iface, adl->sdl_data, adl->sdl_nlen); - rgi6->flags |= RGI_IFACE_DEFINED; - } - } + if (ifp) + { + /* get interface name */ + const struct sockaddr_dl *adl = (struct sockaddr_dl *) ifp; + if (adl->sdl_nlen && adl->sdl_nlen < sizeof(rgi6->iface)) + { + memcpy(rgi6->iface, adl->sdl_data, adl->sdl_nlen); + rgi6->flags |= RGI_IFACE_DEFINED; + } + } } - done: +done: if (sockfd >= 0) - close(sockfd); + { + close(sockfd); + } } #undef max -#else +#else /* if defined(_WIN32) */ /* * This is a platform-specific method that returns data about @@ -3630,61 +3944,66 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, * may be disabled by missing items. */ void -get_default_gateway (struct route_gateway_info *rgi) +get_default_gateway(struct route_gateway_info *rgi) { - CLEAR(*rgi); + CLEAR(*rgi); } void get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6, - const struct in6_addr *dest) + const struct in6_addr *dest) { msg(D_ROUTE, "no support for get_default_gateway_ipv6() on this system"); CLEAR(*rgi6); } -#endif +#endif /* if defined(_WIN32) */ bool -netmask_to_netbits (const in_addr_t network, const in_addr_t netmask, int *netbits) +netmask_to_netbits(const in_addr_t network, const in_addr_t netmask, int *netbits) { - int i; - const int addrlen = sizeof (in_addr_t) * 8; + int i; + const int addrlen = sizeof(in_addr_t) * 8; - if ((network & netmask) == network) + if ((network & netmask) == network) { - for (i = 0; i <= addrlen; ++i) - { - in_addr_t mask = netbits_to_netmask (i); - if (mask == netmask) - { - if (i == addrlen) - *netbits = -1; - else - *netbits = i; - return true; - } - } + for (i = 0; i <= addrlen; ++i) + { + in_addr_t mask = netbits_to_netmask(i); + if (mask == netmask) + { + if (i == addrlen) + { + *netbits = -1; + } + else + { + *netbits = i; + } + return true; + } + } } - return false; + return false; } /* similar to netmask_to_netbits(), but don't mess with base address * etc., just convert to netbits - non-mappable masks are returned as "-1" */ -int netmask_to_netbits2 (in_addr_t netmask) +int +netmask_to_netbits2(in_addr_t netmask) { - int i; - const int addrlen = sizeof (in_addr_t) * 8; + int i; + const int addrlen = sizeof(in_addr_t) * 8; - for (i = 0; i <= addrlen; ++i) + for (i = 0; i <= addrlen; ++i) { - in_addr_t mask = netbits_to_netmask (i); - if (mask == netmask) - { - return i; - } + in_addr_t mask = netbits_to_netmask(i); + if (mask == netmask) + { + return i; + } } - return -1; + return -1; } @@ -3697,67 +4016,73 @@ int netmask_to_netbits2 (in_addr_t netmask) #if defined(_WIN32) static void -add_host_route_if_nonlocal (struct route_bypass *rb, const in_addr_t addr) +add_host_route_if_nonlocal(struct route_bypass *rb, const in_addr_t addr) { - if (test_local_addr(addr, NULL) == TLA_NONLOCAL && addr != 0 && addr != IPV4_NETMASK_HOST) - add_bypass_address (rb, addr); + if (test_local_addr(addr, NULL) == TLA_NONLOCAL && addr != 0 && addr != IPV4_NETMASK_HOST) + { + add_bypass_address(rb, addr); + } } static void -add_host_route_array (struct route_bypass *rb, const IP_ADDR_STRING *iplist) +add_host_route_array(struct route_bypass *rb, const IP_ADDR_STRING *iplist) { - while (iplist) + while (iplist) { - bool succeed = false; - const in_addr_t ip = getaddr (GETADDR_HOST_ORDER, iplist->IpAddress.String, 0, &succeed, NULL); - if (succeed) - { - add_host_route_if_nonlocal (rb, ip); - } - iplist = iplist->Next; + bool succeed = false; + const in_addr_t ip = getaddr(GETADDR_HOST_ORDER, iplist->IpAddress.String, 0, &succeed, NULL); + if (succeed) + { + add_host_route_if_nonlocal(rb, ip); + } + iplist = iplist->Next; } } static void -get_bypass_addresses (struct route_bypass *rb, const unsigned int flags) +get_bypass_addresses(struct route_bypass *rb, const unsigned int flags) { - struct gc_arena gc = gc_new (); - /*bool ret_bool = false;*/ + struct gc_arena gc = gc_new(); + /*bool ret_bool = false;*/ - /* get full routing table */ - const MIB_IPFORWARDTABLE *routes = get_windows_routing_table (&gc); + /* get full routing table */ + const MIB_IPFORWARDTABLE *routes = get_windows_routing_table(&gc); - /* get the route which represents the default gateway */ - const MIB_IPFORWARDROW *row = get_default_gateway_row (routes); + /* get the route which represents the default gateway */ + const MIB_IPFORWARDROW *row = get_default_gateway_row(routes); - if (row) + if (row) { - /* get the adapter which the default gateway is associated with */ - const IP_ADAPTER_INFO *dgi = get_adapter_info (row->dwForwardIfIndex, &gc); + /* get the adapter which the default gateway is associated with */ + const IP_ADAPTER_INFO *dgi = get_adapter_info(row->dwForwardIfIndex, &gc); - /* get extra adapter info, such as DNS addresses */ - const IP_PER_ADAPTER_INFO *pai = get_per_adapter_info (row->dwForwardIfIndex, &gc); + /* get extra adapter info, such as DNS addresses */ + const IP_PER_ADAPTER_INFO *pai = get_per_adapter_info(row->dwForwardIfIndex, &gc); - /* Bypass DHCP server address */ - if ((flags & RG_BYPASS_DHCP) && dgi && dgi->DhcpEnabled) - add_host_route_array (rb, &dgi->DhcpServer); + /* Bypass DHCP server address */ + if ((flags & RG_BYPASS_DHCP) && dgi && dgi->DhcpEnabled) + { + add_host_route_array(rb, &dgi->DhcpServer); + } - /* Bypass DNS server addresses */ - if ((flags & RG_BYPASS_DNS) && pai) - add_host_route_array (rb, &pai->DnsServerList); + /* Bypass DNS server addresses */ + if ((flags & RG_BYPASS_DNS) && pai) + { + add_host_route_array(rb, &pai->DnsServerList); + } } - gc_free (&gc); + gc_free(&gc); } -#else +#else /* if defined(_WIN32) */ static void -get_bypass_addresses (struct route_bypass *rb, const unsigned int flags) /* PLATFORM-SPECIFIC */ +get_bypass_addresses(struct route_bypass *rb, const unsigned int flags) /* PLATFORM-SPECIFIC */ { } -#endif +#endif /* if defined(_WIN32) */ /* * Test if addr is reachable via a local interface (return ILA_LOCAL), @@ -3771,47 +4096,51 @@ get_bypass_addresses (struct route_bypass *rb, const unsigned int flags) /* PLA #if defined(_WIN32) int -test_local_addr (const in_addr_t addr, const struct route_gateway_info *rgi) +test_local_addr(const in_addr_t addr, const struct route_gateway_info *rgi) { - struct gc_arena gc = gc_new (); - const in_addr_t nonlocal_netmask = 0x80000000L; /* routes with netmask <= to this are considered non-local */ - int ret = TLA_NONLOCAL; + struct gc_arena gc = gc_new(); + const in_addr_t nonlocal_netmask = 0x80000000L; /* routes with netmask <= to this are considered non-local */ + int ret = TLA_NONLOCAL; - /* get full routing table */ - const MIB_IPFORWARDTABLE *rt = get_windows_routing_table (&gc); - if (rt) + /* get full routing table */ + const MIB_IPFORWARDTABLE *rt = get_windows_routing_table(&gc); + if (rt) { - int i; - for (i = 0; i < rt->dwNumEntries; ++i) - { - const MIB_IPFORWARDROW *row = &rt->table[i]; - const in_addr_t net = ntohl (row->dwForwardDest); - const in_addr_t mask = ntohl (row->dwForwardMask); - if (mask > nonlocal_netmask && (addr & mask) == net) - { - ret = TLA_LOCAL; - break; - } - } + int i; + for (i = 0; i < rt->dwNumEntries; ++i) + { + const MIB_IPFORWARDROW *row = &rt->table[i]; + const in_addr_t net = ntohl(row->dwForwardDest); + const in_addr_t mask = ntohl(row->dwForwardMask); + if (mask > nonlocal_netmask && (addr & mask) == net) + { + ret = TLA_LOCAL; + break; + } + } } - gc_free (&gc); - return ret; + gc_free(&gc); + return ret; } -#else +#else /* if defined(_WIN32) */ int -test_local_addr (const in_addr_t addr, const struct route_gateway_info *rgi) /* PLATFORM-SPECIFIC */ +test_local_addr(const in_addr_t addr, const struct route_gateway_info *rgi) /* PLATFORM-SPECIFIC */ { - if (rgi) + if (rgi) { - if (local_route (addr, 0xFFFFFFFF, rgi->gateway.addr, rgi)) - return TLA_LOCAL; - else - return TLA_NONLOCAL; + if (local_route(addr, 0xFFFFFFFF, rgi->gateway.addr, rgi)) + { + return TLA_LOCAL; + } + else + { + return TLA_NONLOCAL; + } } - return TLA_NOT_IMPLEMENTED; + return TLA_NOT_IMPLEMENTED; } -#endif +#endif /* if defined(_WIN32) */ |