Remove possibility of sending duplicate MeetmeJoin manager events, and only send a MeetmeLeave event if a MeetmeJoin event occured in the first place. (issue #6599 reported by imran - provided patch with few tiny mods)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@30409 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -883,6 +883,7 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 	int using_pseudo = 0;
 	int duration=20;
 	int hr, min, sec;
+	int sent_event = 0;
 	time_t now;
 	struct ast_dsp *dsp=NULL;
 	struct ast_app *app;
@@ -1135,12 +1136,15 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
 	}
 	ast_log(LOG_DEBUG, "Placed channel %s in ZAP conf %d\n", chan->name, conf->zapconf);
 
+	if (!sent_event) {
 		manager_event(EVENT_FLAG_CALL, "MeetmeJoin", 
 			      "Channel: %s\r\n"
 			      "Uniqueid: %s\r\n"
 			      "Meetme: %s\r\n"
 			      "Usernum: %d\r\n",
 			      chan->name, chan->uniqueid, conf->confno, user->user_no);
+		sent_event = 1;
+	}
 
 	if (!firstpass && !(confflags & CONFFLAG_MONITOR) && !(confflags & CONFFLAG_ADMIN)) {
 		firstpass = 1;
@@ -1693,6 +1697,7 @@ bailoutandtrynormal:
 		min = ((now - user->jointime) % 3600) / 60;
 		sec = (now - user->jointime) % 60;
 
+		if (sent_event) {
 			manager_event(EVENT_FLAG_CALL, "MeetmeLeave",
 				      "Channel: %s\r\n"
 				      "Uniqueid: %s\r\n"
@@ -1706,6 +1711,7 @@ bailoutandtrynormal:
 				      S_OR(user->chan->cid.cid_num, "<unknown>"),
 				      S_OR(user->chan->cid.cid_name, "<unknown>"),
 				      (now - user->jointime));
+		}
 
 		conf->users--;
 		conf->refcount--;