[Asterisk-code-review] main/config options: Check for existance of internal object ... (asterisk[13])

[Matt Jordan]

Matt Jordan has uploaded a new change for review.

  https://gerrit.asterisk.org/1192

Change subject: main/config_options: Check for existance of internal object before derefing
......................................................................

main/config_options: Check for existance of internal object before derefing

A can load and register an object type while still having an invalid sorcery
mapping. This can cause an issue when a creation call is invoked. For example,
mis-configuring PJSIP's endpoint identifier by IP address mapping in
sorcery.conf will cause the sorcery mechanism to be invalidated; however, a
subsequent ARI invocation to create the object will cause a crash, as the
internal type may not be registered as sorcery expects.

Merely checking for a NULL pointer here solves the issue.

Change-Id: I54079fb94a1440992f4735a9a1bbf1abb1c601ac
---
M main/config_options.c
1 file changed, 4 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/92/1192/1

diff --git a/main/config_options.c b/main/config_options.c
index 0cc2dda..0c706ac 100644
--- a/main/config_options.c
+++ b/main/config_options.c
@@ -837,6 +837,10 @@
 	struct aco_option *opt;
 	struct ao2_iterator iter;
 
+	if (!type->internal) {
+		return -1;
+	}
+
 	iter = ao2_iterator_init(type->internal->opts, 0);
 
 	while ((opt = ao2_iterator_next(&iter))) {

-- 
To view, visit https://gerrit.asterisk.org/1192
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I54079fb94a1440992f4735a9a1bbf1abb1c601ac
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: Matt Jordan <mjordan at digium.com>