hello all -
Recently, I started using ssh-agent. When I started using this, Wireshark
started to seg fault on me every time I ran it. Not realizing that it was the
ssh-agent, I just assumed that my computer sucked, and that I would never be
able to run Wireshark on my computer.
A friend of mine had been having the same issue, and we decided to dive into
the code and figure out what was going one. It turns out that ssh-agent set
the SSH_CONNECTION and SSH_CLIENT environment variables to the empty string
when on the local machine. Because of this in util.c, in *get_conn_cfilter(),
tokens[0] is null and there is no check to get around this.
I have attached patch to fix this problem. Does this seem like a reasonable
fix for this problem?
--
Charles Rumford
Quick meaningless comic non sequitur.
--- wireshark-1.2.2/util.c 2009-09-14 21:50:46.000000000 -0400
+++ new/util.c 2009-10-05 17:23:28.429537057 -0400
@@ -151,7 +151,7 @@
}
if ((env = getenv("SSH_CONNECTION")) != NULL) {
tokens = g_strsplit(env, " ", 4);
- if (tokens[3]) {
+ if (tokens[3] && tokens[0]) {
g_string_printf(filter_str, "not (tcp port %s and %s host %s "
"and tcp port %s and %s host %s)", tokens[1], host_ip_af(tokens[0]), tokens[0],
tokens[3], host_ip_af(tokens[2]), tokens[2]);
@@ -159,9 +159,11 @@
}
} else if ((env = getenv("SSH_CLIENT")) != NULL) {
tokens = g_strsplit(env, " ", 3);
- g_string_printf(filter_str, "not (tcp port %s and %s host %s "
- "and tcp port %s)", tokens[1], host_ip_af(tokens[0]), tokens[0], tokens[2]);
- return filter_str->str;
+ if (tokens[0]) {
+ g_string_printf(filter_str, "not (tcp port %s and %s host %s "
+ "and tcp port %s)", tokens[1], host_ip_af(tokens[0]), tokens[0], tokens[2]);
+ return filter_str->str;
+ }
} else if ((env = getenv("REMOTEHOST")) != NULL) {
/* FreeBSD 7.0 sets REMOTEHOST to an empty string */
if (g_ascii_strcasecmp(env, "localhost") == 0 ||
