From: Pekka Riikonen <priikone@silcnet.org>
Date: Tue, 12 Nov 2002 07:50:09 +0000 (+0000)
Subject: 	Check for valid nick before modifying
X-Git-Tag: silc.server.0.9.6~58
X-Git-Url: http://git.silcnet.org/gitweb/?p=silc.git;a=commitdiff_plain;h=284e7793b2f27071a336d68275fc858200734004

	Check for valid nick before modifying
---

diff --git a/apps/silcd/command.c b/apps/silcd/command.c
index 13aaad03..7330f5fc 100644
--- a/apps/silcd/command.c
+++ b/apps/silcd/command.c
@@ -603,6 +603,11 @@ SILC_SERVER_CMD_FUNC(nick)
 
   /* Check nickname */
   nick = silc_argument_get_arg_type(cmd->args, 1, &nick_len);
+  if (!nick) {
+    silc_server_command_send_status_reply(cmd, SILC_COMMAND_NICK,
+					  SILC_STATUS_ERR_BAD_NICKNAME, 0);
+    goto out;
+  }
   if (nick_len > 128)
     nick[128] = '\0';
   if (silc_server_name_bad_chars(nick, nick_len) == TRUE) {