More IPv6 address allocation fixes.

CHANGELOG

@@ -15,6 +15,9 @@ version 2.66
 	    Steven Barth for extensive testing and development work on
 	    this idea.
 
+	    Fix crash on startup on Solaris 11. Regression probably
+	    introduced in 2.61.  Thanks to Geoff Johnstone for the patch.
+  
 
 version 2.65
 	    Fix regression which broke forwarding of queries sent via

src/bpf.c

@@ -111,7 +111,7 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 	{
 	  int iface_index = if_nametoindex(addrs->ifa_name);
 
-	  if (iface_index == 0)
+	  if (iface_index == 0 || !addrs->ifa_addr || !addrs->ifa_netmask)
 	    continue;
 
 	  if (family == AF_INET)
@@ -119,7 +119,10 @@ int iface_enumerate(int family, void *parm, int (*callback)())
 	      struct in_addr addr, netmask, broadcast;
 	      addr = ((struct sockaddr_in *) addrs->ifa_addr)->sin_addr;
 	      netmask = ((struct sockaddr_in *) addrs->ifa_netmask)->sin_addr;
-	      broadcast = ((struct sockaddr_in *) addrs->ifa_broadaddr)->sin_addr; 
+	      if (addrs->ifa_broadaddr)
+		broadcast = ((struct sockaddr_in *) addrs->ifa_broadaddr)->sin_addr; 
+	      else 
+		broadcast.s_addr = 0;	      
 	      if (!((*callback)(addr, iface_index, netmask, broadcast, parm)))
 		goto err;
 	    }

src/dhcp6.c

@@ -211,7 +211,8 @@ static int complete_context6(struct in6_addr *local,  int prefix,
       
       for (context = daemon->dhcp6; context; context = context->next)
 	{
-	  if (!(context->flags & CONTEXT_TEMPLATE) &&
+	  if ((context->flags & CONTEXT_DHCP) &&
+	      !(context->flags & CONTEXT_TEMPLATE) &&
 	      prefix == context->prefix &&
 	      is_same_net6(local, &context->start6, prefix) &&
 	      is_same_net6(local, &context->end6, prefix))
@@ -328,6 +329,7 @@ int address6_allocate(struct dhcp_context *context,  unsigned char *clid, int cl
   return 0;
 }
 
+/* can dynamically allocate addr */
 struct dhcp_context *address6_available(struct dhcp_context *context, 
 					struct in6_addr *taddr,
 					struct dhcp_netid *netids)
@@ -352,6 +354,21 @@ struct dhcp_context *address6_available(struct dhcp_context *context,
   return NULL;
 }
 
+/* address OK if configured */
+struct dhcp_context *address6_valid(struct dhcp_context *context, 
+					struct in6_addr *taddr,
+					struct dhcp_netid *netids)
+{
+  struct dhcp_context *tmp;
+ 
+  for (tmp = context; tmp; tmp = tmp->current)
+    if (is_same_net6(&tmp->start6, taddr, tmp->prefix) &&
+	match_netid(tmp->filter, netids, 1))
+      return tmp;
+
+  return NULL;
+}
+
 struct dhcp_context *narrow_context6(struct dhcp_context *context, 
 				     struct in6_addr *taddr,
 				     struct dhcp_netid *netids)
@@ -366,21 +383,12 @@ struct dhcp_context *narrow_context6(struct dhcp_context *context,
   
   struct dhcp_context *tmp;
 
-  if (!(tmp = address6_available(context, taddr, netids)))
+  if (!(tmp = address6_available(context, taddr, netids)) &&
-    {
+      !(tmp = address6_valid(context, taddr, netids)))
-      for (tmp = context; tmp; tmp = tmp->current)
+    for (tmp = context; tmp; tmp = tmp->current)
-        if (match_netid(tmp->filter, netids, 1) &&
+      if (match_netid(tmp->filter, netids, 1) &&
-            is_same_net6(taddr, &tmp->start6, tmp->prefix) && 
+	  is_same_net6(taddr, &tmp->start6, tmp->prefix))
-            (tmp->flags & CONTEXT_STATIC))
+	break;
-          break;
-      
-      if (!tmp)
-        for (tmp = context; tmp; tmp = tmp->current)
-          if (match_netid(tmp->filter, netids, 1) &&
-              is_same_net6(taddr, &tmp->start6, tmp->prefix) &&
-              !(tmp->flags & CONTEXT_PROXY))
-            break;
-    }
   
   /* Only one context allowed now */
   if (tmp)

src/dnsmasq.h

@@ -1149,6 +1149,9 @@ int is_addr_in_context6(struct dhcp_context *context, struct in6_addr *addr);
 struct dhcp_context *address6_available(struct dhcp_context *context, 
 					struct in6_addr *taddr,
 					struct dhcp_netid *netids);
+struct dhcp_context *address6_valid(struct dhcp_context *context, 
+				    struct in6_addr *taddr,
+				    struct dhcp_netid *netids);
 struct dhcp_context *narrow_context6(struct dhcp_context *context, 
 				     struct in6_addr *taddr,
 				     struct dhcp_netid *netids);

src/rfc3315.c

@@ -83,16 +83,18 @@ static int dhcp6_maybe_relay(struct in6_addr *link_address, struct dhcp_netid **
 	  struct dhcp_context *c;
 	  context = NULL;
 	   
-	  for (c = daemon->dhcp6; c; c = c->next)
+	  if (!IN6_IS_ADDR_LOOPBACK(link_address) &&
-	    if (!IN6_IS_ADDR_LOOPBACK(link_address) &&
+	      !IN6_IS_ADDR_LINKLOCAL(link_address) &&
-		!IN6_IS_ADDR_LINKLOCAL(link_address) &&
+	      !IN6_IS_ADDR_MULTICAST(link_address))
-		!IN6_IS_ADDR_MULTICAST(link_address) &&
+	    for (c = daemon->dhcp6; c; c = c->next)
-		is_same_net6(link_address, &c->start6, c->prefix) &&
+	      if ((c->flags & CONTEXT_DHCP) &&
-		is_same_net6(link_address, &c->end6, c->prefix))
+		  !(c->flags & CONTEXT_TEMPLATE) &&
-	      {
+		  is_same_net6(link_address, &c->start6, c->prefix) &&
-		c->current = context;
+		  is_same_net6(link_address, &c->end6, c->prefix))
-		context = c;
+		{
-	      }
+		  c->current = context;
+		  context = c;
+		}
 	  
 	  if (!context)
 	    {
@@ -525,32 +527,38 @@ static int dhcp6_no_relay(int msg_type, struct in6_addr *link_address, struct dh
 		  {
 		    struct in6_addr *req_addr = opt6_ptr(ia_option, 0);
 		    requested_time = opt6_uint(ia_option, 16, 4);
+		    struct dhcp_context *dynamic;
 
-		    if (!address6_available(context, req_addr, tags) &&
+		    if ((dynamic = address6_available(context, req_addr, tags)) || address6_valid(context, req_addr, tags))
-			(!have_config(config, CONFIG_ADDR6) || memcmp(&config->addr6, req_addr, IN6ADDRSZ) != 0))
 		      {
-			if (msg_type == DHCP6REQUEST)
+			if (!dynamic && !(have_config(config, CONFIG_ADDR6) && memcmp(&config->addr6, req_addr, IN6ADDRSZ) == 0))
 			  {
-			    /* host has a lease, but it's not on the correct link */
+			    /* Static range, not configured. */
 			    o1 = new_opt6(OPTION6_STATUS_CODE);
-			    put_opt6_short(DHCP6NOTONLINK);
+			    put_opt6_short(DHCP6UNSPEC);
-			    put_opt6_string("Not on link");
+			    put_opt6_string("Address unavailable");
 			    end_opt6(o1);
 			  }
+			else if (lease6_find_by_addr(req_addr, 128, 0) &&
+				 !(lease = lease6_find(clid, clid_len, ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA, iaid, req_addr)))
+			  {
+			    /* Address leased to another DUID/IAID */
+			    o1 = new_opt6(OPTION6_STATUS_CODE);
+			    put_opt6_short(DHCP6UNSPEC);
+			    put_opt6_string("Address in use");
+			    end_opt6(o1);
+			  } 
+			else 
+			  addrp = req_addr;
 		      }
-		    else if ((lease = lease6_find(NULL, 0, ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA, 
+		    else if (msg_type == DHCP6REQUEST)
-						  iaid, req_addr)) &&
-			     (clid_len != lease->clid_len ||
-			      memcmp(clid, lease->clid, clid_len) != 0))
 		      {
-			/* Address leased to another DUID */
+			/* requested address not on the correct link */
 			o1 = new_opt6(OPTION6_STATUS_CODE);
-			put_opt6_short(DHCP6UNSPEC);
+			put_opt6_short(DHCP6NOTONLINK);
-			put_opt6_string("Address in use");
+			put_opt6_string("Not on link");
 			end_opt6(o1);
 		      }
-		    else
-		      addrp = req_addr;
 		  }
 		else
 		  {