From: Mark Michelson <mmichelson@digium.com>
Date: Tue, 11 Dec 2012 20:45:17 +0000 (+0000)
Subject: Fix crash that can occur if CLI registration fails for an aliased command.
X-Git-Tag: 1.8.21.0-rc1~58
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=20aa0aa4760274194653ad1a4e7c8da9de5c75e7;p=thirdparty%2Fasterisk.git

Fix crash that can occur if CLI registration fails for an aliased command.

A recent memory leak fix in main/cli.c causes an ast_cli_entry's command
field to be freed and NULLed if ast_cli_register() fails. res_clialiases
was ignoring the return value of ast_cli_register() and was then passing
the NULL command off to a a hash function. This resulted in a crash.

The fix is not to ignore the erroneous return value. If ast_cli_register()
fails, then we do not continue trying to process the current alias.





git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@377840 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/res/res_clialiases.c b/res/res_clialiases.c
index d67f3ba39b..bb1a78d3b7 100644
--- a/res/res_clialiases.c
+++ b/res/res_clialiases.c
@@ -209,7 +209,10 @@ static void load_config(int reload)
 			alias->cli_entry.command = alias->alias;
 			alias->cli_entry.usage = "Aliased CLI Command\n";
 
-			ast_cli_register(&alias->cli_entry);
+			if (ast_cli_register(&alias->cli_entry)) {
+				ao2_ref(alias, -1);
+				continue;
+			}
 			ao2_link(cli_aliases, alias);
 			ast_verbose(VERBOSE_PREFIX_2 "Aliased CLI command '%s' to '%s'\n", v1->name, v1->value);
 			ao2_ref(alias, -1);