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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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@@ -392,6 +392,11 @@ static int crement_function_read(struct ast_channel *chan, const char *cmd,
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return -1;
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}
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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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ast_channel_lock(chan);
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if (!(var = pbx_builtin_getvar_helper(chan, data))) {
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