Set the INVALID_EXTEN channel variable when chan_misdn forces the 'i' extension

The chan_misdn channel driver will send a channel with an invalid destination
to the 'i' extension itself if said extension can be reached. It forgot,
however, to set the INVALID_EXTEN channel variable when it bounces the channel
to this extension. Dialplan writers everywhere moaned at yet another
inconsistency.

This is yet another example of why duplicating logic in multiple places results
in bugs that stick around in Jira for just under three years.

Yes: ASTERISK-15456 was created on January 18th, 2010. Patch committed on
January 15th, 2013. Ouch.

(closes issue ASTERISK-15456)
Reported by: Thomas Omerzu
patches:
  chan_misdn_invalid.patch2 uploaded by Thomas Omerzu (license 5927)
........

Merged revisions 379145 from http://svn.asterisk.org/svn/asterisk/branches/1.8

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@379146 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index d7cffc5f4fa2dbab786969305842985e1f22066e..f931a9d74ac4bb925fc6230ab6c4c49f496fd759 100644 (file)
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -10088,8 +10088,8 @@ cb_events(enum event_e event, struct misdn_bchannel *bc, void *user_data)
                                        ast_log(LOG_WARNING,
                                                "Extension '%s@%s' can never match. Jumping to 'i' extension. port:%d\n",
                                                bc->dialed.number, ch->context, bc->port);
+                                       pbx_builtin_setvar_helper(ch->ast, "INVALID_EXTEN", bc->dad);
                                        ast_channel_exten_set(ch->ast, "i");
-
                                        ch->state = MISDN_DIALING;
                                        start_pbx(ch, bc, ch->ast);
                                        break;
@@ -10346,6 +10346,7 @@ cb_events(enum event_e event, struct misdn_bchannel *bc, void *user_data)
                                ast_log(LOG_WARNING,
                                        "Extension '%s@%s' can never match. Jumping to 'i' extension. port:%d\n",
                                        bc->dialed.number, ch->context, bc->port);
+                               pbx_builtin_setvar_helper(ch->ast, "INVALID_EXTEN", bc->dad);
                                ast_channel_exten_set(ch->ast, "i");
                                misdn_lib_send_event(bc, EVENT_SETUP_ACKNOWLEDGE);
                                ch->state = MISDN_DIALING;