From 5246174f27866c0e9e22844d998f3c97cac54050 Mon Sep 17 00:00:00 2001
From: Bernhard Schmidt <berni@debian.org>
Date: Wed, 30 Sep 2020 21:10:50 +0200
Subject: New upstream version 2.5~rc2

---
 src/openvpn/route.c | 46 +++++++++++++++++++++++++++++-----------------
 1 file changed, 29 insertions(+), 17 deletions(-)

(limited to 'src/openvpn/route.c')

diff --git a/src/openvpn/route.c b/src/openvpn/route.c
index f127a90..d75aa5f 100644
--- a/src/openvpn/route.c
+++ b/src/openvpn/route.c
@@ -49,6 +49,10 @@
 #include <linux/rtnetlink.h>            /* RTM_GETROUTE etc. */
 #endif
 
+#if defined(TARGET_NETBSD)
+#include <net/route.h>			/* RT_ROUNDUP(), RT_ADVANCE() */
+#endif
+
 #ifdef _WIN32
 #include "openvpn-msg.h"
 
@@ -323,6 +327,10 @@ init_route(struct route_ipv4 *r,
 
     if (get_special_addr(rl, ro->network, (in_addr_t *) &special.s_addr, &status))
     {
+        if (!status)
+        {
+            goto fail;
+        }
         special.s_addr = htonl(special.s_addr);
         ret = openvpn_getaddrinfo(0, inet_ntoa(special), NULL, 0, NULL,
                                   AF_INET, network_list);
@@ -619,7 +627,7 @@ init_route_list(struct route_list *rl,
 
     rl->flags = opt->flags;
 
-    if (remote_host)
+    if (remote_host != IPV4_INVALID_ADDR)
     {
         rl->spec.remote_host = remote_host;
         rl->spec.flags |= RTSA_REMOTE_HOST;
@@ -1979,25 +1987,24 @@ add_route_ipv6(struct route_ipv6 *r6, const struct tuntap *tt,
     }
     else
     {
-        struct buffer out = alloc_buf_gc(64, &gc);
+        DWORD adapter_index;
         if (r6->adapter_index)          /* vpn server special route */
         {
-            buf_printf(&out, "interface=%lu", r6->adapter_index );
+            adapter_index = r6->adapter_index;
             gateway_needed = true;
         }
         else
         {
-            buf_printf(&out, "interface=%lu", tt->adapter_index );
+            adapter_index = tt->adapter_index;
         }
-        device = buf_bptr(&out);
 
-        /* netsh interface ipv6 add route 2001:db8::/32 MyTunDevice */
-        argv_printf(&argv, "%s%s interface ipv6 add route %s/%d %s",
+        /* netsh interface ipv6 add route 2001:db8::/32 42 */
+        argv_printf(&argv, "%s%s interface ipv6 add route %s/%d %lu",
                     get_win_sys_path(),
                     NETSH_PATH_SUFFIX,
                     network,
                     r6->netbits,
-                    device);
+                    adapter_index);
 
         /* next-hop depends on TUN or TAP mode:
          * - in TAP mode, we use the "real" next-hop
@@ -2423,25 +2430,24 @@ delete_route_ipv6(const struct route_ipv6 *r6, const struct tuntap *tt,
     }
     else
     {
-        struct buffer out = alloc_buf_gc(64, &gc);
+        DWORD adapter_index;
         if (r6->adapter_index)          /* vpn server special route */
         {
-            buf_printf(&out, "interface=%lu", r6->adapter_index );
+            adapter_index = r6->adapter_index;
             gateway_needed = true;
         }
         else
         {
-            buf_printf(&out, "interface=%lu", tt->adapter_index );
+            adapter_index = tt->adapter_index;
         }
-        device = buf_bptr(&out);
 
-        /* netsh interface ipv6 delete route 2001:db8::/32 MyTunDevice */
-        argv_printf(&argv, "%s%s interface ipv6 delete route %s/%d %s",
+        /* netsh interface ipv6 delete route 2001:db8::/32 42 */
+        argv_printf(&argv, "%s%s interface ipv6 delete route %s/%d %lu",
                     get_win_sys_path(),
                     NETSH_PATH_SUFFIX,
                     network,
                     r6->netbits,
-                    device);
+                    adapter_index);
 
         /* next-hop depends on TUN or TAP mode:
          * - in TAP mode, we use the "real" next-hop
@@ -3408,11 +3414,15 @@ struct rtmsg {
 
 /* the route socket code is identical for all 4 supported BSDs and for
  * MacOS X (Darwin), with one crucial difference: when going from
- * 32 bit to 64 bit, the BSDs increased the structure size but kept
+ * 32 bit to 64 bit, FreeBSD/OpenBSD increased the structure size but kept
  * source code compatibility by keeping the use of "long", while
  * MacOS X decided to keep binary compatibility by *changing* the API
  * to use "uint32_t", thus 32 bit on all OS X variants
  *
+ * NetBSD does the MacOS way of "fixed number of bits, no matter if
+ * 32 or 64 bit OS", but chose uint64_t.  For maximum portability, we
+ * just use the OS RT_ROUNDUP() macro, which is guaranteed to be correct.
+ *
  * We used to have a large amount of duplicate code here which really
  * differed only in this (long) vs. (uint32_t) - IMHO, worse than
  * having a combined block for all BSDs with this single #ifdef inside
@@ -3421,6 +3431,8 @@ struct rtmsg {
 #if defined(TARGET_DARWIN)
 #define ROUNDUP(a) \
     ((a) > 0 ? (1 + (((a) - 1) | (sizeof(uint32_t) - 1))) : sizeof(uint32_t))
+#elif defined(TARGET_NETBSD)
+#define ROUNDUP(a) RT_ROUNDUP(a)
 #else
 #define ROUNDUP(a) \
     ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
@@ -3729,7 +3741,7 @@ get_default_gateway_ipv6(struct route_ipv6_gateway_info *rgi6,
     }
     if (write(sockfd, (char *)&m_rtmsg, l) < 0)
     {
-        msg(M_WARN, "GDG6: problem writing to routing socket");
+        msg(M_WARN|M_ERRNO, "GDG6: problem writing to routing socket");
         goto done;
     }
 
-- 
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