From 9030e7c44aa75345336673c0252974ead4eb8364 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 6 Aug 2004 09:25:59 +0000
Subject: Update.

2004-07-30  Guido Guenther  <agx@sigxcpu.org>

	* nss/getent.c (passwd_keys): Use strtoul instead of isdigit to
	test if the key is numeric or not.
	(group_keys): Likewise.
---
 sysdeps/unix/sysv/linux/getsourcefilter.c | 86 ++++++++++++++++++++++++++++---
 1 file changed, 78 insertions(+), 8 deletions(-)

(limited to 'sysdeps/unix/sysv/linux/getsourcefilter.c')

diff --git a/sysdeps/unix/sysv/linux/getsourcefilter.c b/sysdeps/unix/sysv/linux/getsourcefilter.c
index 43936c896b..738c19809e 100644
--- a/sysdeps/unix/sysv/linux/getsourcefilter.c
+++ b/sysdeps/unix/sysv/linux/getsourcefilter.c
@@ -19,13 +19,74 @@
    02111-1307 USA.  */
 
 #include <alloca.h>
+#include <assert.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
+#include <netatalk/at.h>
+#include <netax25/ax25.h>
 #include <netinet/in.h>
+#include <netipx/ipx.h>
+#include <netpacket/packet.h>
+#include <netrose/rose.h>
+#include <sys/param.h>
 #include <sys/socket.h>
 
 
+static const struct
+{
+  int sol;
+  int af;
+  socklen_t size;
+}  sol_map[] =
+  {
+    /* Sort the array according to importance of the protocols.  Add
+       more protocols when they become available.  */
+    { SOL_IP, AF_INET, sizeof (struct sockaddr_in) },
+    { SOL_IPV6, AF_INET6, sizeof (struct sockaddr_in6) },
+    { SOL_AX25, AF_AX25, sizeof (struct sockaddr_ax25) },
+    { SOL_IPX, AF_IPX, sizeof (struct sockaddr_ipx) },
+    { SOL_ATALK, AF_APPLETALK, sizeof (struct sockaddr_at) },
+    { SOL_ROSE, AF_ROSE, sizeof (struct sockaddr_rose) },
+    { SOL_PACKET, AF_PACKET, sizeof (struct sockaddr_ll) }
+  };
+#define NSOL_MAP (sizeof (sol_map) / sizeof (sol_map[0]))
+
+
+/* Try to determine the socket level value.  Ideally both side and
+   family are set.  But sometimes only the size is correct and the
+   family value might be bogus.  Loop over the array entries and look
+   for a perfect match or the first match based on size.  */
+int
+__get_sol (int af, socklen_t len)
+{
+  int first_size_sol = -1;
+
+  for (size_t cnt = 0; cnt < NSOL_MAP; ++cnt)
+    {
+      /* Just a test so that we make sure the special value used to
+	 signal the "we have so far no socket level value" is OK.  */
+      assert (sol_map[cnt].sol != -1);
+
+      if (len == sol_map[cnt].size)
+	{
+	  /* The size matches, which is a requirement.  If the family
+	     matches, too, we have a winner.  Otherwise we remember the
+	     socket level value for this protocol if it is the first
+	     match.  */
+	  if (af == sol_map[cnt].af)
+	    /* Bingo!  */
+	    return sol_map[cnt].sol;
+
+	  if (first_size_sol == -1)
+	    first_size_sol = sol_map[cnt].sol;
+      }
+    }
+
+  return first_size_sol;
+}
+
+
 int
 getsourcefilter (int s, uint32_t interface, struct sockaddr *group,
 		 socklen_t grouplen, uint32_t *fmode, uint32_t *numsrc,
@@ -34,34 +95,43 @@ getsourcefilter (int s, uint32_t interface, struct sockaddr *group,
   /* We have to create an struct ip_msfilter object which we can pass
      to the kernel.  */
   socklen_t needed = GROUP_FILTER_SIZE (*numsrc);
-  int use_malloc = __libc_use_alloca (needed);
+  int use_alloca = __libc_use_alloca (needed);
 
   struct group_filter *gf;
-  if (use_malloc)
+  if (use_alloca)
+    gf = (struct group_filter *) alloca (needed);
+  else
     {
       gf = (struct group_filter *) malloc (needed);
       if (gf == NULL)
 	return -1;
     }
-  else
-    gf = (struct group_filter *) alloca (needed);
 
   gf->gf_interface = interface;
   memcpy (&gf->gf_group, group, grouplen);
+  gf->gf_numsrc = *numsrc;
 
-  int result = __getsockopt (s, SOL_IP, MCAST_MSFILTER, gf, &needed);
+  /* We need to provide the appropriate socket level value.  */
+  int sol = __get_sol (group->sa_family, grouplen);
+  if (sol == -1)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  int result = __getsockopt (s, sol, MCAST_MSFILTER, gf, &needed);
 
   /* If successful, copy the results to the places the caller wants
      them in.  */
   if (result == 0)
     {
       *fmode = gf->gf_fmode;
-      *numsrc = gf->gf_numsrc;
       memcpy (slist, gf->gf_slist,
-	      gf->gf_numsrc * sizeof (struct sockaddr_storage));
+	      MIN (*numsrc, gf->gf_numsrc) * sizeof (struct sockaddr_storage));
+      *numsrc = gf->gf_numsrc;
     }
 
-  if (use_malloc)
+  if (! use_alloca)
     {
       int save_errno = errno;
       free (gf);
-- 
cgit 1.4.1