bgpdump/debian/patches/upstream.fix-crash-on-huge-prefix-lists.patch

Description: Handle prefix lists with more than MAX_PREFIXES prefixes gracefully
Author: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
Bug: https://bitbucket.org/ripencc/bgpdump/issue/2/
Bug: https://bitbucket.org/ripencc/bgpdump/issue/10/
Bug: https://bitbucket.org/ripencc/bgpdump/issue/13/
Bug: https://bitbucket.org/ripencc/bgpdump/issue/17/
Bug: https://bitbucket.org/ripencc/bgpdump/issue/18/
Last-Update: 2016-07-13

--- a/bgpdump_lib.c
+++ b/bgpdump_lib.c
@@ -1590,11 +1590,16 @@
             break;
         }
         
-        struct prefix *prefix = prefixes + count;
+        struct prefix *prefix;
         
-        if(count++ > MAX_PREFIXES)
-            continue;
-
+        if(count < MAX_PREFIXES) {
+            prefix = prefixes + count;
+        } else {
+            /* read and discard */
+            static struct prefix void_prefix;
+            prefix = &void_prefix;
+        }
+        count++;
         *prefix = (struct prefix) { .len = p_len, .path_id = path_id };
         mstream_get(s, &prefix->address, p_bytes);
     }