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config: bug: Fix SEGV in ast_category_insert when matching category isn't found

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If you call ast_category_insert with a match category that doesn't exist, the
list traverse runs out of 'next' categories and you get a SEGV.  This patch
adds check for the end-of-list condition and changes the signature to return
an int for success/failure indication instead of a void.

The only consumer of this function is manager and it was also changed to use
the return value.

Tested by: George Joseph
Review: https://reviewboard.asterisk.org/r/3993/
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Merged revisions 423276 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 423277 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 423278 from http://svn.asterisk.org/svn/asterisk/branches/12
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Merged revisions 423279 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@423280 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
George Joseph
2014-09-18 14:46:12 +00:00
parent 8839ba3727
commit d120e40309
3 changed files with 19 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
main/config.c
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@@ -783,24 +783,28 @@ void ast_category_append(struct ast_config *config, struct ast_category *categor
config->current = category;
}
void ast_category_insert(struct ast_config *config, struct ast_category *cat, const char *match)
int ast_category_insert(struct ast_config *config, struct ast_category *cat, const char *match)
{
struct ast_category *cur_category;
if (!cat || !match)
return;
if (!config || !cat || !match) {
return -1;
}
if (!strcasecmp(config->root->name, match)) {
cat->next = config->root;
config->root = cat;
return;
return 0;
}
for (cur_category = config->root; cur_category; cur_category = cur_category->next) {
for (cur_category = config->root; cur_category && cur_category->next;
cur_category = cur_category->next) {
if (!strcasecmp(cur_category->next->name, match)) {
cat->next = cur_category->next;
cur_category->next = cat;
break;
return 0;
}
}
return -1;
}
static void ast_destroy_template_list(struct ast_category *cat)