[Asterisk-code-review] res/res sorcery config: Prevent crash from misconfigured sor... (asterisk[13])

[Matt Jordan]

Matt Jordan has uploaded a new change for review.

  https://gerrit.asterisk.org/931

Change subject: res/res_sorcery_config: Prevent crash from misconfigured sorcery.conf
......................................................................

res/res_sorcery_config: Prevent crash from misconfigured sorcery.conf

Misconfiguring sorcery.conf with a 'config' wizard with no extra data
will currently crash Asterisk on startup, as the wizard requires a comma
delineated list to parse. This patch updates res_sorcery_config to check
for the presence of the data before it starts manipulating it.

Change-Id: I4c97512e8258bc82abe190627a9206c28f5d3847
---
M res/res_sorcery_config.c
1 file changed, 10 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/31/931/1

diff --git a/res/res_sorcery_config.c b/res/res_sorcery_config.c
index db3316e..312015c 100644
--- a/res/res_sorcery_config.c
+++ b/res/res_sorcery_config.c
@@ -348,9 +348,18 @@
 
 static void *sorcery_config_open(const char *data)
 {
-	char *tmp = ast_strdupa(data), *filename = strsep(&tmp, ","), *option;
+	char *tmp;
+	char *filename;
+	char *option;
 	struct sorcery_config *config;
 
+	if (ast_strlen_zero(data)) {
+		return NULL;
+	}
+
+ 	tmp = ast_strdupa(data);
+ 	filename = strsep(&tmp, ",");
+
 	if (ast_strlen_zero(filename) || !(config = ao2_alloc_options(sizeof(*config) + strlen(filename) + 1, sorcery_config_destructor, AO2_ALLOC_OPT_LOCK_NOLOCK))) {
 		return NULL;
 	}

-- 
To view, visit https://gerrit.asterisk.org/931
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I4c97512e8258bc82abe190627a9206c28f5d3847
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: Matt Jordan <mjordan at digium.com>