Restore a behavior that was recently changed, when we fixed issue #13962 and

issue #13363 (related to issue #6176).  When a hangup occurs during a Macro
execution in earlier 1.4, the h extension would execute within the Macro
context, whereas it was always supposed to execute only within the main context
(where Macro was called).  So this fix checks for an "h" extension in the
deepest macro context where a hangup occurred; if it exists, that "h" extension
executes, otherwise the main context "h" is executed.
(closes issue #14122)
 Reported by: wetwired
 Patches: 
       20090210__bug14122.diff.txt uploaded by Corydon76 (license 14)
 Tested by: andrew


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@174885 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_macro.c

@@ -477,6 +477,23 @@ static int _macro_exec(struct ast_channel *chan, void *data, int exclusive)
 		chan->macropriority = 0;
 	}
 
+	/*!\note
+	 * This section is used to restore a behavior that we mistakenly
+	 * changed in issue #6176, then mistakenly reverted in #13962 and
+	 * #13363.  A corresponding change is made in main/pbx.c, where we
+	 * check this variable for existence, then look for the "h" extension
+	 * in that context.
+	 */
+	if (ast_check_hangup(chan) || res < 0) {
+		/* Don't need to lock the channel, as we aren't dereferencing emc.
+		 * The intent here is to grab the deepest context, without overwriting
+		 * in any above context. */
+		const char *emc = pbx_builtin_getvar_helper(chan, "EXIT_MACRO_CONTEXT");
+		if (!emc) {
+			pbx_builtin_setvar_helper(chan, "EXIT_MACRO_CONTEXT", fullmacro);
+		}
+	}
+
 	if (!strcasecmp(chan->context, fullmacro)) {
   		/* If we're leaving the macro normally, restore original information */
 		chan->priority = oldpriority;

main/pbx.c

@@ -2365,6 +2365,7 @@ static int __ast_pbx_run(struct ast_channel *c)
 	int res = 0;
 	int autoloopflag;
 	int error = 0;		/* set an error conditions */
+	const char *emc;
 
 	/* A little initial setup here */
 	if (c->pbx) {
@@ -2542,7 +2543,15 @@ static int __ast_pbx_run(struct ast_channel *c)
 		ast_log(LOG_WARNING, "Don't know what to do with '%s'\n", c->name);
 	if (res != AST_PBX_KEEPALIVE)
 		ast_softhangup(c, c->hangupcause ? c->hangupcause : AST_CAUSE_NORMAL_CLEARING);
-	if ((res != AST_PBX_KEEPALIVE) && !ast_test_flag(c, AST_FLAG_BRIDGE_HANGUP_RUN) && ast_exists_extension(c, c->context, "h", 1, c->cid.cid_num)) {
+	ast_channel_lock(c);
+	if ((emc = pbx_builtin_getvar_helper(c, "EXIT_MACRO_CONTEXT"))) {
+		emc = ast_strdupa(emc);
+	}
+	ast_channel_unlock(c);
+	if ((res != AST_PBX_KEEPALIVE) && !ast_test_flag(c, AST_FLAG_BRIDGE_HANGUP_RUN) &&
+			((emc && ast_exists_extension(c, emc, "h", 1, c->cid.cid_num)) ||
+			 (ast_exists_extension(c, c->context, "h", 1, c->cid.cid_num) && (emc = c->context)))) {
+		ast_copy_string(c->context, emc, sizeof(c->context));
 		set_ext_pri(c, "h", 1);
 		if (c->cdr && ast_opt_end_cdr_before_h_exten) {
 			ast_cdr_end(c->cdr);