From 4a91150175268d49a1c17131838e5afad925788b Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Thu, 1 Jun 2000 12:58:41 +0000
Subject: [PATCH] Updated for new scope handling.

Also, provide proper address scopes in struct ifa.
---
 sysdep/linux/krt-scan.c        |  2 +-
 sysdep/linux/netlink/netlink.c | 12 +++++++++++-
 sysdep/unix/krt-iface.c        | 11 ++++++++++-
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/sysdep/linux/krt-scan.c b/sysdep/linux/krt-scan.c
index 42f92877..b7fc1295 100644
--- a/sysdep/linux/krt-scan.c
+++ b/sysdep/linux/krt-scan.c
@@ -100,7 +100,7 @@ krt_parse_entry(byte *ent, struct krt_proto *p)
   if (flags & RTF_GATEWAY)
     {
       neighbor *ng = neigh_find(&p->p, &gw, 0);
-      if (ng)
+      if (ng && ng->scope)
 	a.iface = ng->iface;
       else
 	/* FIXME: Remove this warning? Handle it somehow... */
diff --git a/sysdep/linux/netlink/netlink.c b/sysdep/linux/netlink/netlink.c
index 70abdd73..1c9d9778 100644
--- a/sysdep/linux/netlink/netlink.c
+++ b/sysdep/linux/netlink/netlink.c
@@ -321,6 +321,7 @@ nl_parse_addr(struct nlmsghdr *h)
   int new = h->nlmsg_type == RTM_NEWADDR;
   struct ifa ifa;
   struct iface *ifi;
+  int scope;
 
   if (!(i = nl_checkin(h, sizeof(*i))) || !nl_parse_attrs(IFA_RTA(i), a, sizeof(a)))
     return;
@@ -355,6 +356,7 @@ nl_parse_addr(struct nlmsghdr *h)
   ifa.iface = ifi;
   if (i->ifa_flags & IFA_F_SECONDARY)
     ifa.flags |= IA_SECONDARY;
+
   /* IFA_LOCAL can be unset for IPv6 interfaces */
   memcpy(&ifa.ip, RTA_DATA(a[IFA_LOCAL] ? : a[IFA_ADDRESS]), sizeof(ifa.ip));
   ipa_ntoh(ifa.ip);
@@ -389,6 +391,14 @@ nl_parse_addr(struct nlmsghdr *h)
       ifa.prefix = ipa_and(ifa.ip, netmask);
     }
 
+  scope = ipa_classify(ifa.ip);
+  if (scope < 0)
+    {
+      log(L_ERR "KIF: Invalid interface address %I", ifa.ip);
+      return;
+    }
+  ifa.scope = scope & IADDR_SCOPE_MASK;
+
   DBG("KIF: IF%d(%s): %s IPA %I, flg %x, net %I/%d, brd %I, opp %I\n",
       ifi->index, ifi->name,
       new ? "added" : "removed",
@@ -664,7 +674,7 @@ nl_parse_route(struct nlmsghdr *h, int scan)
 	  memcpy(&ra.gw, RTA_DATA(a[RTA_GATEWAY]), sizeof(ra.gw));
 	  ipa_ntoh(ra.gw);
 	  ng = neigh_find(&p->p, &ra.gw, 0);
-	  if (ng)
+	  if (ng && ng->scope)
 	    ra.iface = ng->iface;
 	  else
 	    /* FIXME: Remove this warning? Handle it somehow... */
diff --git a/sysdep/unix/krt-iface.c b/sysdep/unix/krt-iface.c
index bd4a40a7..ddd70e99 100644
--- a/sysdep/unix/krt-iface.c
+++ b/sysdep/unix/krt-iface.c
@@ -35,7 +35,7 @@ scan_ifs(struct ifreq *r, int cnt)
   char *err, *colon;
   unsigned fl;
   ip_addr netmask;
-  int l;
+  int l, scope;
 
   if_start_update();
   for (cnt /= sizeof(struct ifreq); cnt; cnt--, r++)
@@ -115,6 +115,14 @@ scan_ifs(struct ifreq *r, int cnt)
 	 )
 	i.flags |= IF_MULTICAST;
 
+      scope = ipa_classify(a.ip);
+      if (scope < 0)
+	{
+	  log(L_ERR "%s: Invalid address", i.name);
+	  goto bad;
+	}
+      a.scope = scope & IADDR_SCOPE_MASK;
+
       if (a.pxlen < 32)
 	{
 	  a.brd = ipa_or(a.prefix, ipa_not(ipa_mkmask(a.pxlen)));
@@ -132,6 +140,7 @@ scan_ifs(struct ifreq *r, int cnt)
 	}
       else
 	a.brd = a.opposite;
+      a.scope = SCOPE_UNIVERSE;
 
       if (ioctl(if_scan_sock, SIOCGIFMTU, r) < 0)
 	{ err = "SIOCGIFMTU"; goto faulty; }