allow setting a channel variable to disable sending SIGHUP to the AGI process

(issue #6491, original patch by juggie, channel variable patch by corydon,
 committed patch modified to change variable name and update documentation)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@30337 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/res/res_agi.c b/res/res_agi.c
index 7c7e5cee5283c0a20d7a5bd3524565c9960abee4..d4588fa057e35f5378b81fd0b93f4c70ccc0e1c6 100644 (file)
--- a/res/res_agi.c
+++ b/res/res_agi.c
@@ -90,6 +90,9 @@ static char *descrip =
 "  This channel will stop dialplan execution on hangup inside of this\n"
 "application, except when using DeadAGI.  Otherwise, dialplan execution\n"
 "will continue normally.\n"
+"  A locally executed AGI script will receive SIGHUP on hangup from the channel\n"
+"except when using DeadAGI. This can be disabled by setting the AGISIGHUP channel\n"
+"variable to \"no\" before executing the AGI application.\n"
 "  Using 'EAGI' provides enhanced AGI, with incoming audio available out of band\n"
 "on file descriptor 3\n\n"
 "  Use the CLI command 'show agi' to list available agi commands\n"
@@ -1858,8 +1861,11 @@ static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi
        }
        /* Notify process */
        if (pid > -1) {
-               if (kill(pid, SIGHUP))
-                       ast_log(LOG_WARNING, "unable to send SIGHUP to AGI process %d: %s\n", pid, strerror(errno));
+               const char *sighup = pbx_builtin_getvar_helper(chan, "AGISIGHUP");
+               if (ast_strlen_zero(sighup) || !ast_false(sighup)) {
+                       if (kill(pid, SIGHUP))
+                               ast_log(LOG_WARNING, "unable to send SIGHUP to AGI process %d: %s\n", pid, strerror(errno));
+               }
        }
        fclose(readf);
        return returnstatus;