From: Rudolf Polzer <divverent@xonotic.org>
Date: Wed, 24 Oct 2012 13:55:42 +0000 (+0200)
Subject: l_net: don't segfault of gethostbyname(gethostname()) fails
X-Git-Tag: xonotic-v0.7.0~14
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=cb907744d6cd176a2e27dbf120f8437ad27bf7f4;p=xonotic%2Fnetradiant.git

l_net: don't segfault of gethostbyname(gethostname()) fails

Can happen on Linux with misconfigured /etc/hosts.
---

diff --git a/libs/l_net/l_net_berkley.c b/libs/l_net/l_net_berkley.c
index 7e5a50e0..02059256 100644
--- a/libs/l_net/l_net_berkley.c
+++ b/libs/l_net/l_net_berkley.c
@@ -173,7 +173,10 @@ int WINS_Init( void ){
 	// determine my name & address
 	gethostname( buff, MAXHOSTNAMELEN );
 	local = gethostbyname( buff );
-	myAddr = *(int *)local->h_addr_list[0];
+	if(local && local->h_addr_list && local->h_addr_list[0])
+		myAddr = *(int *)local->h_addr_list[0];
+	else
+		myAddr = inet_ntoa("127.0.0.1");
 
 	// if the quake hostname isn't set, set it to the machine name
 //	if (Q_strcmp(hostname.string, "UNNAMED") == 0)
diff --git a/libs/l_net/l_net_wins.c b/libs/l_net/l_net_wins.c
index ca888259..c56b17ed 100644
--- a/libs/l_net/l_net_wins.c
+++ b/libs/l_net/l_net_wins.c
@@ -196,7 +196,10 @@ int WINS_Init( void ){
 	// determine my name & address
 	gethostname( buff, MAXHOSTNAMELEN );
 	local = gethostbyname( buff );
-	myAddr = *(int *)local->h_addr_list[0];
+	if(local && local->h_addr_list && local->h_addr_list[0])
+		myAddr = *(int *)local->h_addr_list[0];
+	else
+		myAddr = inet_ntoa("127.0.0.1");
 
 	// if the quake hostname isn't set, set it to the machine name
 //	if (Q_strcmp(hostname.string, "UNNAMED") == 0)