From Albert Chin: IBM's C compiler, at least for AIX 4.3.3, doesn't

[tcpdump] / print-bootp.c

diff --git a/print-bootp.c b/print-bootp.c
index dc9dda85374870809965f314aa55e33e4dfa2a6b..d1534c7a3d104019267a819ce17918252b6f7a2b 100644 (file)
--- a/print-bootp.c
+++ b/print-bootp.c
@@ -21,8 +21,8 @@
  * Format and print bootp packets.
  */
 #ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-bootp.c,v 1.75 2003-08-01 03:10:11 fenner Exp $ (LBL)";
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-bootp.c,v 1.79 2005-04-20 10:30:52 guy Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -556,6 +556,11 @@ rfc1048_print(register const u_char *bp)
                                break;
 
                        case TAG_CLIENT_FQDN:
+                               /* option 81 should be at least 4 bytes long */
+                               if (len < 4)  {
+                                        printf("ERROR: options 81 len %u < 4 bytes", len);
+                                       break;
+                               }
                                if (*bp++)
                                        printf("[svrreg]");
                                if (*bp)