chan_dahdi/SS7: Made reject incoming call for an in-alarm or blocked channel.
If a SS7 call comes in requesting a CIC that is in-alarm, the call is accepted and connects if the extension exists in the dialplan. The call does not have any audio. * Made release the call immediately with circuit congestion cause. (closes issue ASTERISK-20204) Reported by: Tuan Le Patches: jira_asterisk_20204_v1.8.patch (license #5621) patch uploaded by rmudgett ........ Merged revisions 376058 from http://svn.asterisk.org/svn/asterisk/branches/1.8 ........ Merged revisions 376059 from http://svn.asterisk.org/svn/asterisk/branches/10 ........ Merged revisions 376060 from http://svn.asterisk.org/svn/asterisk/branches/11 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@376061 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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@ -291,6 +291,24 @@ static void sig_ss7_handle_link_exception(struct sig_ss7_linkset *linkset, int w
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}
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}
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/*!
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* \internal
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* \brief Determine if a private channel structure is available.
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*
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* \param pvt Channel to determine if available.
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*
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* \return TRUE if the channel is available.
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*/
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static int sig_ss7_is_chan_available(struct sig_ss7_chan *pvt)
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{
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if (!pvt->inalarm && !pvt->owner && !pvt->ss7call
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&& pvt->call_level == SIG_SS7_CALL_LEVEL_IDLE
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&& !pvt->locallyblocked && !pvt->remotelyblocked) {
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return 1;
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}
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return 0;
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}
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/*!
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* \internal
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* \brief Obtain the sig_ss7 owner channel lock if the owner exists.
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@ -589,7 +607,7 @@ static void ss7_start_call(struct sig_ss7_chan *p, struct sig_ss7_linkset *links
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ast_log(LOG_WARNING, "Unable to start PBX on CIC %d\n", p->cic);
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ast_mutex_lock(&linkset->lock);
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sig_ss7_lock_private(p);
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isup_rel(linkset->ss7, p->ss7call, -1);
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isup_rel(linkset->ss7, p->ss7call, AST_CAUSE_SWITCH_CONGESTION);
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p->call_level = SIG_SS7_CALL_LEVEL_IDLE;
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p->alreadyhungup = 1;
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ast_callid_threadstorage_auto_clean(callid, callid_created);
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@ -975,12 +993,12 @@ void *ss7_linkset(void *data)
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* We have not sent our IAM yet and we never will at this point.
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*/
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p->alreadyhungup = 1;
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isup_rel(ss7, e->iam.call, -1);
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isup_rel(ss7, e->iam.call, AST_CAUSE_NORMAL_CIRCUIT_CONGESTION);
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}
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p->call_level = SIG_SS7_CALL_LEVEL_GLARE;
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if (p->owner) {
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ss7_queue_pvt_cause_data(p->owner, "SS7 ISUP_EVENT_IAM (glare)", AST_CAUSE_NORMAL_CLEARING);
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ast_channel_hangupcause_set(p->owner, AST_CAUSE_NORMAL_CLEARING);
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ss7_queue_pvt_cause_data(p->owner, "SS7 ISUP_EVENT_IAM (glare)", AST_CAUSE_NORMAL_CIRCUIT_CONGESTION);
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ast_channel_hangupcause_set(p->owner, AST_CAUSE_NORMAL_CIRCUIT_CONGESTION);
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ast_softhangup_nolock(p->owner, AST_SOFTHANGUP_DEV);
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ast_channel_unlock(p->owner);
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}
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@ -993,6 +1011,13 @@ void *ss7_linkset(void *data)
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*/
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ast_assert(!p->owner);
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if (!sig_ss7_is_chan_available(p)) {
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/* Circuit is likely blocked or in alarm. */
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isup_rel(ss7, e->iam.call, AST_CAUSE_NORMAL_CIRCUIT_CONGESTION);
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sig_ss7_unlock_private(p);
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break;
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}
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/* Mark channel as in use so no outgoing call will steal it. */
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p->call_level = SIG_SS7_CALL_LEVEL_ALLOCATED;
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p->ss7call = e->iam.call;
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@ -1443,24 +1468,6 @@ int sig_ss7_add_sigchan(struct sig_ss7_linkset *linkset, int which, int ss7type,
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return 0;
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}
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/*!
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* \internal
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* \brief Determine if a private channel structure is available.
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*
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* \param pvt Channel to determine if available.
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*
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* \return TRUE if the channel is available.
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*/
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static int sig_ss7_is_chan_available(struct sig_ss7_chan *pvt)
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{
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if (!pvt->inalarm && !pvt->owner && !pvt->ss7call
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&& pvt->call_level == SIG_SS7_CALL_LEVEL_IDLE
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&& !pvt->locallyblocked && !pvt->remotelyblocked) {
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return 1;
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}
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return 0;
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}
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/*!
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* \brief Determine if the specified channel is available for an outgoing call.
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* \since 1.8
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