From 4ffbfff5fb9bf36ce88710470f7464ddb19fe35e Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Tue, 14 Sep 1999 10:30:57 +0000
Subject: Prevent a core-dump.

svn path=/trunk/; revision=2557
---
 fetchmail.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'fetchmail.c')

diff --git a/fetchmail.c b/fetchmail.c
index ceccfacf..ae6649ef 100644
--- a/fetchmail.c
+++ b/fetchmail.c
@@ -1094,7 +1094,19 @@ static int load_params(int argc, char **argv, int optind)
 	     * to minimize DNS round trips.
 	     */
 	    if (ctl->server.lead_server)
-		ctl->server.truename = xstrdup(ctl->server.lead_server->truename);
+	    {
+		char	*leadname = ctl->server.lead_server->truename;
+
+		/* prevent core dump from ill-formed or duplicate entry */
+		if (!leadname)
+		{
+		    report(stderr, 
+			   _("Lead server has no name."));
+		    exit(PS_SYNTAX);
+		}
+
+		ctl->server.truename = xstrdup(leadname);
+	    }
 #ifdef HAVE_GETHOSTBYNAME
 	    else if (ctl->server.preauthenticate==A_KERBEROS_V4 ||
 		ctl->server.preauthenticate==A_KERBEROS_V5 ||
-- 
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