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Make pbx_exec pass an empty string into applications, if we get NULL.

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This protects against possible segfaults in applications that may try
 to use data before checking length (ast_strdupa'ing it, for example)

(closes issue #12100)
Reported by: foxfire
Patches:
      12100-nullappargs.diff uploaded by qwell (license 4)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@105005 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Jason Parker
2008-02-28 19:20:10 +00:00
parent 70a45ef5b1
commit 6c3d62c1fa
2 changed files with 4 additions and 8 deletions
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8
main/cdr.c
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@@ -787,12 +787,8 @@ void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
for (; cdr; cdr = cdr->next) {
if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
check_post(cdr);
if (!app)
app = "";
ast_copy_string(cdr->lastapp, app, sizeof(cdr->lastapp));
if (!data)
data = "";
ast_copy_string(cdr->lastdata, data, sizeof(cdr->lastdata));
ast_copy_string(cdr->lastapp, S_OR(app, ""), sizeof(cdr->lastapp));
ast_copy_string(cdr->lastdata, S_OR(data, ""), sizeof(cdr->lastdata));
}
}
}