From 1c36ea979faad812c01c0e1cc841beee0f949ceb Mon Sep 17 00:00:00 2001
From: MysterD <myster@d>
Date: Fri, 25 Feb 2022 22:44:23 -0800
Subject: [PATCH] Fix crash on invalid domain

---
 src/pc/network/socket/domain_res.c | 38 +++++++++++++++++-------------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/src/pc/network/socket/domain_res.c b/src/pc/network/socket/domain_res.c
index fb57c486..264eb08e 100644
--- a/src/pc/network/socket/domain_res.c
+++ b/src/pc/network/socket/domain_res.c
@@ -12,23 +12,27 @@
 
 
 void domain_resolution(void) {
-  struct in_addr addr;
-  char *host_name;
-  struct hostent *remoteHost;
-  char* domainname = "";
-  host_name = configJoinIp;
-  if (host_name == NULL) {
-	  return;
-  }
-  int i = 0;
-  remoteHost = gethostbyname(host_name);
-  i = 0;
-  if (remoteHost->h_addrtype == AF_INET) {
+    struct in_addr addr;
+    char *host_name = configJoinIp;
+    struct hostent *remoteHost;
+    char* domainname = "";
+    host_name = configJoinIp;
 
-    while (remoteHost->h_addr_list[i] != 0) {
-          addr.s_addr = *(u_long *) remoteHost->h_addr_list[i++];
-          domainname = inet_ntoa(addr);
-          snprintf(configJoinIp, MAX_CONFIG_STRING, "%s", domainname);
+    if (host_name == NULL) {
+        return;
+    }
+
+    int i = 0;
+    remoteHost = gethostbyname(host_name);
+    if (remoteHost == NULL) {
+        return;
+    }
+
+    if (remoteHost->h_addrtype == AF_INET) {
+        while (remoteHost->h_addr_list[i] != 0) {
+            addr.s_addr = *(u_long *) remoteHost->h_addr_list[i++];
+            domainname = inet_ntoa(addr);
+            snprintf(configJoinIp, MAX_CONFIG_STRING, "%s", domainname);
+        }
     }
-  }
 }