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Fix dialplan function NULL channel safety issues
(closes issue ASTERISK-23391) Reported by: Corey Farrell Review: https://reviewboard.asterisk.org/r/3386/ ........ Merged revisions 411313 from http://svn.asterisk.org/svn/asterisk/branches/1.8 ........ Merged revisions 411314 from http://svn.asterisk.org/svn/asterisk/branches/11 ........ Merged revisions 411315 from http://svn.asterisk.org/svn/asterisk/branches/12 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@411328 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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@@ -61,6 +61,11 @@ static int blacklist_read(struct ast_channel *chan, const char *cmd, char *data,
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char blacklist[1];
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int bl = 0;
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if (!chan) {
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ast_log(LOG_WARNING, "No channel was provided to %s function.\n", cmd);
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return -1;
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}
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if (ast_channel_caller(chan)->id.number.valid && ast_channel_caller(chan)->id.number.str) {
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if (!ast_db_get("blacklist", ast_channel_caller(chan)->id.number.str, blacklist, sizeof (blacklist)))
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bl = 1;
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