X-Git-Url: https://git.distorted.org.uk/~mdw/userv-utils/blobdiff_plain/8bb9d875e22b456711478e9d9972d458e8eb0d48..935da5a413575e01bc3273bb93b2efacbbe47759:/ipif/forwarder.c

diff --git a/ipif/forwarder.c b/ipif/forwarder.c
index d3a0f0f..f901f78 100644
--- a/ipif/forwarder.c
+++ b/ipif/forwarder.c
@@ -1,6 +1,7 @@
 /*
  * Encrypting tunnel for userv-ipif tunnels, actual implementation
- *
+ */
+/*
  * usage:
  *  udptunnel-forwarder <optchars>
  *                      <public-local-fd> <private-in-fd> <private-out-fd>
@@ -33,6 +34,23 @@
  *      12     usage error
  *      16     bad trouble
  */
+/*
+ * Copyright (C) 2000 Ian Jackson
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with userv-utils; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
 
 #include <sys/socket.h>
 #include <netinet/in.h>
@@ -191,7 +209,9 @@ static void inbound(void) {
   for (i=n_mechs-1; i>=0; i--) {
     emsg= mechs[i]->decode(md_in[i],&buf_in);
     if (emsg) {
-      fprintf(stderr, "%s: bad packet: %s: %s\n", programid, mechs[i]->name, emsg);
+      if (*emsg)
+	fprintf(stderr, "%s: bad packet: %s: %s\n",
+		programid, mechs[i]->name, emsg);
       return;
     }
     cdebugbuf(i, "decode", &buf_in, 3,0);