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asterisk/channels/sig_pri.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2009, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief PRI signaling module
*
* \author Matthew Fredrickson <creslin@digium.com>
*/
#include "asterisk.h"
#ifdef HAVE_PRI
#include <errno.h>
#include <ctype.h>
#include <signal.h>
#include "asterisk/utils.h"
#include "asterisk/options.h"
#include "asterisk/pbx.h"
#include "asterisk/file.h"
#include "asterisk/callerid.h"
#include "asterisk/say.h"
#include "asterisk/manager.h"
#include "asterisk/astdb.h"
#include "asterisk/causes.h"
#include "asterisk/musiconhold.h"
#include "asterisk/cli.h"
#include "asterisk/transcap.h"
#include "asterisk/features.h"
#include "sig_pri.h"
static int pri_matchdigittimeout = 3000;
static int pri_gendigittimeout = 8000;
#define DCHAN_NOTINALARM (1 << 0)
#define DCHAN_UP (1 << 1)
#define PRI_CHANNEL(p) ((p) & 0xff)
#define PRI_SPAN(p) (((p) >> 8) & 0xff)
#define PRI_EXPLICIT(p) (((p) >> 16) & 0x01)
#define DCHAN_AVAILABLE (DCHAN_NOTINALARM | DCHAN_UP)
#define PRI_DEADLOCK_AVOIDANCE(lock) \
do { \
sig_pri_unlock_private(p); \
usleep(1); \
sig_pri_lock_private(p); \
} while (0)
static int pri_active_dchan_index(struct sig_pri_pri *pri);
static inline void pri_rel(struct sig_pri_pri *pri)
{
ast_mutex_unlock(&pri->lock);
}
static unsigned int PVT_TO_CHANNEL(struct sig_pri_chan *p)
{
int explicit;
if (p->pri->dchan_logical_span[pri_active_dchan_index(p->pri)] == p->logicalspan)
explicit = 1;
else
explicit = 0;
return (((p)->prioffset) | ((p)->logicalspan << 8) | (explicit ? 0x10000 : 0));
}
static void sig_pri_handle_dchan_exception(struct sig_pri_pri *pri, int index)
{
if (pri->calls->handle_dchan_exception)
pri->calls->handle_dchan_exception(pri, index);
}
static void sig_pri_unlock_private(struct sig_pri_chan *p)
{
if (p->calls->unlock_private)
p->calls->unlock_private(p->chan_pvt);
}
static void sig_pri_lock_private(struct sig_pri_chan *p)
{
if (p->calls->lock_private)
p->calls->lock_private(p->chan_pvt);
}
static inline int pri_grab(struct sig_pri_chan *p, struct sig_pri_pri *pri)
{
int res;
/* Grab the lock first */
do {
res = ast_mutex_trylock(&pri->lock);
if (res) {
PRI_DEADLOCK_AVOIDANCE(p);
}
} while (res);
/* Then break the poll */
pthread_kill(pri->master, SIGURG);
return 0;
}
static int sig_pri_set_echocanceller(struct sig_pri_chan *p, int enable)
{
if (p->calls->set_echocanceller)
return p->calls->set_echocanceller(p->chan_pvt, enable);
else
return -1;
}
static void sig_pri_fixup_chans(struct sig_pri_chan *old, struct sig_pri_chan *new)
{
if (old->calls->fixup_chans)
old->calls->fixup_chans(old->chan_pvt, new->chan_pvt);
}
static int sig_pri_play_tone(struct sig_pri_chan *p, enum sig_pri_tone tone)
{
if (p->calls->play_tone)
return p->calls->play_tone(p->chan_pvt, tone);
else
return -1;
}
static struct ast_channel *sig_pri_new_ast_channel(struct sig_pri_chan *p, int state, int startpbx, int ulaw, int transfercapability, char *exten, const struct ast_channel *requestor)
{
struct ast_channel *c;
if (p->calls->new_ast_channel)
c = p->calls->new_ast_channel(p->chan_pvt, state, startpbx, ulaw, transfercapability, exten, requestor);
else
return NULL;
if (!p->owner)
p->owner = c;
p->isidlecall = 0;
p->alreadyhungup = 0;
return c;
}
struct ast_channel *sig_pri_request(struct sig_pri_chan *p, enum sig_pri_law law, const struct ast_channel *requestor)
{
ast_log(LOG_DEBUG, "%s %d\n", __FUNCTION__, p->channel);
return sig_pri_new_ast_channel(p, AST_STATE_RESERVED, 0, law, 0, p->exten, requestor);
}
int pri_is_up(struct sig_pri_pri *pri)
{
int x;
for (x = 0; x < NUM_DCHANS; x++) {
if (pri->dchanavail[x] == DCHAN_AVAILABLE)
return 1;
}
return 0;
}
static char *pri_order(int level)
{
switch (level) {
case 0:
return "Primary";
case 1:
return "Secondary";
case 2:
return "Tertiary";
case 3:
return "Quaternary";
default:
return "<Unknown>";
}
}
/* Returns index of the active dchan */
static int pri_active_dchan_index(struct sig_pri_pri *pri)
{
int x = -1;
for (x = 0; x < NUM_DCHANS; x++) {
if ((pri->dchans[x] == pri->pri))
break;
}
return x;
}
static int pri_find_dchan(struct sig_pri_pri *pri)
{
int oldslot = -1;
struct pri *old;
int newslot = -1;
int x;
old = pri->pri;
for (x = 0; x < NUM_DCHANS; x++) {
if ((pri->dchanavail[x] == DCHAN_AVAILABLE) && (newslot < 0))
newslot = x;
if (pri->dchans[x] == old) {
oldslot = x;
}
}
if (newslot < 0) {
newslot = 0;
/* This is annoying to see on non persistent layer 2 connections. Let's not complain in that case */
if (pri->sig != SIG_BRI_PTMP) {
ast_log(LOG_WARNING, "No D-channels available! Using Primary channel as D-channel anyway!\n");
}
}
if (old && (oldslot != newslot))
ast_log(LOG_NOTICE, "Switching from d-channel fd %d to fd %d!\n",
pri->fds[oldslot], pri->fds[newslot]);
pri->pri = pri->dchans[newslot];
return 0;
}
static void pri_update_cid(struct sig_pri_chan *p, struct sig_pri_pri *pri)
{
/* We must unlock the PRI to avoid the possibility of a deadlock */
if (pri)
ast_mutex_unlock(&pri->lock);
for (;;) {
if (p->owner) {
if (ast_channel_trylock(p->owner)) {
PRI_DEADLOCK_AVOIDANCE(p);
} else {
ast_set_callerid(p->owner, S_OR(p->lastcid_num, NULL),
S_OR(p->lastcid_name, NULL),
S_OR(p->lastcid_num, NULL)
);
ast_channel_unlock(p->owner);
break;
}
} else
break;
}
if (pri)
ast_mutex_lock(&pri->lock);
}
static void pri_queue_frame(struct sig_pri_chan *p, struct ast_frame *f, struct sig_pri_pri *pri)
{
/* We must unlock the PRI to avoid the possibility of a deadlock */
if (pri)
ast_mutex_unlock(&pri->lock);
for (;;) {
if (p->owner) {
if (ast_channel_trylock(p->owner)) {
PRI_DEADLOCK_AVOIDANCE(p);
} else {
ast_queue_frame(p->owner, f);
ast_channel_unlock(p->owner);
break;
}
} else
break;
}
if (pri)
ast_mutex_lock(&pri->lock);
}
static void pri_queue_control(struct sig_pri_chan *p, int subclass, struct sig_pri_pri *pri)
{
struct ast_frame f = {AST_FRAME_CONTROL, };
f.subclass = subclass;
pri_queue_frame(p, &f, pri);
}
static int pri_find_principle(struct sig_pri_pri *pri, int channel)
{
int x;
int span = PRI_SPAN(channel);
int principle = -1;
int explicit = PRI_EXPLICIT(channel);
channel = PRI_CHANNEL(channel);
if (!explicit) {
int index = pri_active_dchan_index(pri);
if (index == -1)
return -1;
span = pri->dchan_logical_span[index];
}
for (x = 0; x < pri->numchans; x++) {
if (pri->pvts[x] && (pri->pvts[x]->prioffset == channel) && (pri->pvts[x]->logicalspan == span)) {
principle = x;
break;
}
}
return principle;
}
static int pri_fixup_principle(struct sig_pri_pri *pri, int principle, q931_call *c)
{
int x;
if (!c) {
if (principle < 0)
return -1;
return principle;
}
if ((principle > -1) &&
(principle < pri->numchans) &&
(pri->pvts[principle]) &&
(pri->pvts[principle]->call == c))
return principle;
/* First, check for other bearers */
for (x = 0; x < pri->numchans; x++) {
if (!pri->pvts[x])
continue;
if (pri->pvts[x]->call == c) {
/* Found our call */
if (principle != x) {
struct sig_pri_chan *new = pri->pvts[principle], *old = pri->pvts[x];
ast_verb(3, "Moving call from channel %d to channel %d\n",
old->channel, new->channel);
if (new->owner) {
ast_log(LOG_WARNING, "Can't fix up channel from %d to %d because %d is already in use\n",
old->channel, new->channel, new->channel);
return -1;
}
sig_pri_fixup_chans(old, new);
/* Fix it all up now */
new->owner = old->owner;
old->owner = NULL;
new->call = old->call;
old->call = NULL;
}
return principle;
}
}
ast_log(LOG_WARNING, "Call specified, but not found?\n");
return -1;
}
static char * redirectingreason2str(int redirectingreason)
{
switch (redirectingreason) {
case 0:
return "UNKNOWN";
case 1:
return "BUSY";
case 2:
return "NO_REPLY";
case 0xF:
return "UNCONDITIONAL";
default:
return "NOREDIRECT";
}
}
static char *dialplan2str(int dialplan)
{
if (dialplan == -1) {
return("Dynamically set dialplan in ISDN");
}
return (pri_plan2str(dialplan));
}
static void apply_plan_to_number(char *buf, size_t size, const struct sig_pri_pri *pri, const char *number, const int plan)
{
switch (plan) {
case PRI_INTERNATIONAL_ISDN: /* Q.931 dialplan == 0x11 international dialplan => prepend international prefix digits */
snprintf(buf, size, "%s%s", pri->internationalprefix, number);
break;
case PRI_NATIONAL_ISDN: /* Q.931 dialplan == 0x21 national dialplan => prepend national prefix digits */
snprintf(buf, size, "%s%s", pri->nationalprefix, number);
break;
case PRI_LOCAL_ISDN: /* Q.931 dialplan == 0x41 local dialplan => prepend local prefix digits */
snprintf(buf, size, "%s%s", pri->localprefix, number);
break;
case PRI_PRIVATE: /* Q.931 dialplan == 0x49 private dialplan => prepend private prefix digits */
snprintf(buf, size, "%s%s", pri->privateprefix, number);
break;
case PRI_UNKNOWN: /* Q.931 dialplan == 0x00 unknown dialplan => prepend unknown prefix digits */
snprintf(buf, size, "%s%s", pri->unknownprefix, number);
break;
default: /* other Q.931 dialplan => don't twiddle with callingnum */
snprintf(buf, size, "%s", number);
break;
}
}
static int pri_check_restart(struct sig_pri_pri *pri)
{
#ifdef HAVE_PRI_SERVICE_MESSAGES
tryanotherpos:
#endif
do {
pri->resetpos++;
} while ((pri->resetpos < pri->numchans) &&
(!pri->pvts[pri->resetpos] ||
pri->pvts[pri->resetpos]->call ||
pri->pvts[pri->resetpos]->resetting));
if (pri->resetpos < pri->numchans) {
#ifdef HAVE_PRI_SERVICE_MESSAGES
char db_chan_name[20], db_answer[5], state;
int why;
/* check if the channel is out of service */
ast_mutex_lock(&pri->pvts[pri->resetpos]->service_lock);
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, pri->pvts[pri->resetpos]->pri->span, pri->pvts[pri->resetpos]->channel);
ast_mutex_unlock(&pri->pvts[pri->resetpos]->service_lock);
/* if so, try next channel */
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%c:%d", &state, &why);
if (why) {
ast_log(LOG_NOTICE, "span '%d' channel '%d' out-of-service (reason: %s), not sending RESTART\n", pri->span,
pri->pvts[pri->resetpos]->channel, (why & SRVST_FAREND) ? (why & SRVST_NEAREND) ? "both ends" : "far end" : "near end");
goto tryanotherpos;
}
}
#endif
/* Mark the channel as resetting and restart it */
pri->pvts[pri->resetpos]->resetting = 1;
pri_reset(pri->pri, PVT_TO_CHANNEL(pri->pvts[pri->resetpos]));
} else {
pri->resetting = 0;
time(&pri->lastreset);
}
return 0;
}
static int pri_find_empty_chan(struct sig_pri_pri *pri, int backwards)
{
int x;
if (backwards)
x = pri->numchans;
else
x = 0;
for (;;) {
if (backwards && (x < 0))
break;
if (!backwards && (x >= pri->numchans))
break;
if (pri->pvts[x] && !pri->pvts[x]->inalarm && !pri->pvts[x]->owner) {
ast_debug(1, "Found empty available channel %d/%d\n",
pri->pvts[x]->logicalspan, pri->pvts[x]->prioffset);
return x;
}
if (backwards)
x--;
else
x++;
}
return -1;
}
static void *do_idle_thread(void *vchan)
{
struct ast_channel *chan = vchan;
struct sig_pri_chan *pvt = chan->tech_pvt;
struct ast_frame *f;
char ex[80];
/* Wait up to 30 seconds for an answer */
int newms, ms = 30000;
ast_verb(3, "Initiating idle call on channel %s\n", chan->name);
snprintf(ex, sizeof(ex), "%d/%s", pvt->channel, pvt->pri->idledial);
if (ast_call(chan, ex, 0)) {
ast_log(LOG_WARNING, "Idle dial failed on '%s' to '%s'\n", chan->name, ex);
ast_hangup(chan);
return NULL;
}
while ((newms = ast_waitfor(chan, ms)) > 0) {
f = ast_read(chan);
if (!f) {
/* Got hangup */
break;
}
if (f->frametype == AST_FRAME_CONTROL) {
switch (f->subclass) {
case AST_CONTROL_ANSWER:
/* Launch the PBX */
ast_copy_string(chan->exten, pvt->pri->idleext, sizeof(chan->exten));
ast_copy_string(chan->context, pvt->pri->idlecontext, sizeof(chan->context));
chan->priority = 1;
ast_verb(4, "Idle channel '%s' answered, sending to %s@%s\n", chan->name, chan->exten, chan->context);
ast_pbx_run(chan);
/* It's already hungup, return immediately */
return NULL;
case AST_CONTROL_BUSY:
ast_verb(4, "Idle channel '%s' busy, waiting...\n", chan->name);
break;
case AST_CONTROL_CONGESTION:
ast_verb(4, "Idle channel '%s' congested, waiting...\n", chan->name);
break;
};
}
ast_frfree(f);
ms = newms;
}
/* Hangup the channel since nothing happend */
ast_hangup(chan);
return NULL;
}
static void *pri_ss_thread(void *data)
{
struct sig_pri_chan *p = data;
struct ast_channel *chan = p->owner;
char exten[AST_MAX_EXTENSION];
int res;
int len;
int timeout;
/* in the bizarre case where the channel has become a zombie before we
even get started here, abort safely
*/
if (!p) {
ast_log(LOG_WARNING, "Channel became a zombie before simple switch could be started (%s)\n", chan->name);
ast_hangup(chan);
return NULL;
}
ast_verb(3, "Starting simple switch on '%s'\n", chan->name);
/* Now loop looking for an extension */
ast_copy_string(exten, p->exten, sizeof(exten));
len = strlen(exten);
res = 0;
while ((len < AST_MAX_EXTENSION-1) && ast_matchmore_extension(chan, chan->context, exten, 1, p->cid_num)) {
if (len && !ast_ignore_pattern(chan->context, exten))
sig_pri_play_tone(p, -1);
else
sig_pri_play_tone(p, SIG_PRI_TONE_DIALTONE);
if (ast_exists_extension(chan, chan->context, exten, 1, p->cid_num))
timeout = pri_matchdigittimeout;
else
timeout = pri_gendigittimeout;
res = ast_waitfordigit(chan, timeout);
if (res < 0) {
ast_log(LOG_DEBUG, "waitfordigit returned < 0...\n");
ast_hangup(chan);
return NULL;
} else if (res) {
exten[len++] = res;
exten[len] = '\0';
} else
goto exit;
}
/* if no extension was received ('unspecified') on overlap call, use the 's' extension */
if (ast_strlen_zero(exten)) {
ast_verb(3, "Going to extension s|1 because of empty extension received on overlap call\n");
exten[0] = 's';
exten[1] = '\0';
}
sig_pri_play_tone(p, -1);
if (ast_exists_extension(chan, chan->context, exten, 1, p->cid_num)) {
/* Start the real PBX */
ast_copy_string(chan->exten, exten, sizeof(chan->exten));
sig_pri_set_echocanceller(p, 1);
ast_setstate(chan, AST_STATE_RING);
res = ast_pbx_run(chan);
if (res) {
ast_log(LOG_WARNING, "PBX exited non-zero!\n");
}
} else {
ast_log(LOG_DEBUG, "No such possible extension '%s' in context '%s'\n", exten, chan->context);
chan->hangupcause = AST_CAUSE_UNALLOCATED;
ast_hangup(chan);
p->exten[0] = '\0';
/* Since we send release complete here, we won't get one */
p->call = NULL;
}
return NULL;
exit:
res = sig_pri_play_tone(p, SIG_PRI_TONE_CONGESTION);
if (res < 0)
ast_log(LOG_WARNING, "Unable to play congestion tone on channel %d\n", p->channel);
ast_hangup(chan);
return NULL;
}
void pri_event_alarm(struct sig_pri_pri *pri, int index, int before_start_pri)
{
pri->dchanavail[index] &= ~(DCHAN_NOTINALARM | DCHAN_UP);
if (!before_start_pri)
pri_find_dchan(pri);
}
void pri_event_noalarm(struct sig_pri_pri *pri, int index, int before_start_pri)
{
pri->dchanavail[index] |= DCHAN_NOTINALARM;
if (!before_start_pri)
pri_restart(pri->dchans[index]);
}
static void *pri_dchannel(void *vpri)
{
struct sig_pri_pri *pri = vpri;
pri_event *e;
struct pollfd fds[NUM_DCHANS];
int res;
int chanpos = 0;
int x;
struct ast_channel *c;
struct timeval tv, lowest, *next;
int doidling=0;
char *cc;
time_t t;
int i, which=-1;
int numdchans;
pthread_t threadid;
pthread_attr_t attr;
char ani2str[6];
char plancallingnum[256];
char plancallingani[256];
char calledtonstr[10];
struct timeval lastidle = { 0, 0 };
pthread_t p;
struct ast_channel *idle;
char idlen[80];
int nextidle = -1;
int haveidles;
int activeidles;
gettimeofday(&lastidle, NULL);
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
if (!ast_strlen_zero(pri->idledial) && !ast_strlen_zero(pri->idleext)) {
/* Need to do idle dialing, check to be sure though */
cc = strchr(pri->idleext, '@');
if (cc) {
*cc = '\0';
cc++;
ast_copy_string(pri->idlecontext, cc, sizeof(pri->idlecontext));
#if 0
/* Extensions may not be loaded yet */
if (!ast_exists_extension(NULL, pri->idlecontext, pri->idleext, 1, NULL))
ast_log(LOG_WARNING, "Extension '%s @ %s' does not exist\n", pri->idleext, pri->idlecontext);
else
#endif
doidling = 1;
} else
ast_log(LOG_WARNING, "Idle dial string '%s' lacks '@context'\n", pri->idleext);
}
for (;;) {
for (i = 0; i < NUM_DCHANS; i++) {
if (!pri->dchans[i])
break;
fds[i].fd = pri->fds[i];
fds[i].events = POLLIN | POLLPRI;
fds[i].revents = 0;
}
numdchans = i;
time(&t);
ast_mutex_lock(&pri->lock);
if (pri->switchtype != PRI_SWITCH_GR303_TMC && (pri->sig != SIG_BRI_PTMP) && (pri->resetinterval > 0)) {
if (pri->resetting && pri_is_up(pri)) {
if (pri->resetpos < 0)
pri_check_restart(pri);
} else {
if (!pri->resetting && (t - pri->lastreset) >= pri->resetinterval) {
pri->resetting = 1;
pri->resetpos = -1;
}
}
}
/* Look for any idle channels if appropriate */
if (doidling && pri_is_up(pri)) {
nextidle = -1;
haveidles = 0;
activeidles = 0;
for (x = pri->numchans; x >= 0; x--) {
if (pri->pvts[x] && !pri->pvts[x]->owner &&
!pri->pvts[x]->call) {
if (haveidles < pri->minunused) {
haveidles++;
} else if (!pri->pvts[x]->resetting) {
nextidle = x;
break;
}
} else if (pri->pvts[x] && pri->pvts[x]->owner && pri->pvts[x]->isidlecall)
activeidles++;
}
if (nextidle > -1) {
if (ast_tvdiff_ms(ast_tvnow(), lastidle) > 1000) {
/* Don't create a new idle call more than once per second */
snprintf(idlen, sizeof(idlen), "%d/%s", pri->pvts[nextidle]->channel, pri->idledial);
idle = sig_pri_request(pri->pvts[nextidle], AST_FORMAT_ULAW, NULL);
if (idle) {
pri->pvts[nextidle]->isidlecall = 1;
if (ast_pthread_create_background(&p, NULL, do_idle_thread, idle)) {
ast_log(LOG_WARNING, "Unable to start new thread for idle channel '%s'\n", idle->name);
ast_hangup(idle);
}
} else
ast_log(LOG_WARNING, "Unable to request channel 'DAHDI/%s' for idle call\n", idlen);
gettimeofday(&lastidle, NULL);
}
} else if ((haveidles < pri->minunused) &&
(activeidles > pri->minidle)) {
/* Mark something for hangup if there is something
that can be hungup */
for (x = pri->numchans; x >= 0; x--) {
/* find a candidate channel */
if (pri->pvts[x] && pri->pvts[x]->owner && pri->pvts[x]->isidlecall) {
pri->pvts[x]->owner->_softhangup |= AST_SOFTHANGUP_DEV;
haveidles++;
/* Stop if we have enough idle channels or
can't spare any more active idle ones */
if ((haveidles >= pri->minunused) ||
(activeidles <= pri->minidle))
break;
}
}
}
}
/* Start with reasonable max */
lowest = ast_tv(60, 0);
for (i = 0; i < NUM_DCHANS; i++) {
/* Find lowest available d-channel */
if (!pri->dchans[i])
break;
if ((next = pri_schedule_next(pri->dchans[i]))) {
/* We need relative time here */
tv = ast_tvsub(*next, ast_tvnow());
if (tv.tv_sec < 0) {
tv = ast_tv(0,0);
}
if (doidling || pri->resetting) {
if (tv.tv_sec > 1) {
tv = ast_tv(1, 0);
}
} else {
if (tv.tv_sec > 60) {
tv = ast_tv(60, 0);
}
}
} else if (doidling || pri->resetting) {
/* Make sure we stop at least once per second if we're
monitoring idle channels */
tv = ast_tv(1,0);
} else {
/* Don't poll for more than 60 seconds */
tv = ast_tv(60, 0);
}
if (!i || ast_tvcmp(tv, lowest) < 0) {
lowest = tv;
}
}
ast_mutex_unlock(&pri->lock);
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
pthread_testcancel();
e = NULL;
res = poll(fds, numdchans, lowest.tv_sec * 1000 + lowest.tv_usec / 1000);
pthread_testcancel();
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
ast_mutex_lock(&pri->lock);
if (!res) {
for (which = 0; which < NUM_DCHANS; which++) {
if (!pri->dchans[which])
break;
/* Just a timeout, run the scheduler */
e = pri_schedule_run(pri->dchans[which]);
if (e)
break;
}
} else if (res > -1) {
for (which = 0; which < NUM_DCHANS; which++) {
if (!pri->dchans[which])
break;
if (fds[which].revents & POLLPRI) {
sig_pri_handle_dchan_exception(pri, which);
} else if (fds[which].revents & POLLIN) {
e = pri_check_event(pri->dchans[which]);
}
if (e)
break;
}
} else if (errno != EINTR)
ast_log(LOG_WARNING, "pri_event returned error %d (%s)\n", errno, strerror(errno));
if (e) {
if (pri->debug)
pri_dump_event(pri->dchans[which], e);
if (e->e != PRI_EVENT_DCHAN_DOWN) {
if (!(pri->dchanavail[which] & DCHAN_UP)) {
ast_verb(2, "%s D-Channel on span %d up\n", pri_order(which), pri->span);
}
pri->dchanavail[which] |= DCHAN_UP;
} else {
if (pri->dchanavail[which] & DCHAN_UP) {
ast_verb(2, "%s D-Channel on span %d down\n", pri_order(which), pri->span);
}
pri->dchanavail[which] &= ~DCHAN_UP;
}
if ((e->e != PRI_EVENT_DCHAN_UP) && (e->e != PRI_EVENT_DCHAN_DOWN) && (pri->pri != pri->dchans[which]))
/* Must be an NFAS group that has the secondary dchan active */
pri->pri = pri->dchans[which];
switch (e->e) {
case PRI_EVENT_DCHAN_UP:
if (!pri->pri) pri_find_dchan(pri);
/* Note presense of D-channel */
time(&pri->lastreset);
/* Restart in 5 seconds */
if (pri->resetinterval > -1) {
pri->lastreset -= pri->resetinterval;
pri->lastreset += 5;
}
pri->resetting = 0;
/* Take the channels from inalarm condition */
for (i = 0; i < pri->numchans; i++)
if (pri->pvts[i]) {
pri->pvts[i]->inalarm = 0;
}
break;
case PRI_EVENT_DCHAN_DOWN:
pri_find_dchan(pri);
if (!pri_is_up(pri)) {
pri->resetting = 0;
/* Hangup active channels and put them in alarm mode */
for (i = 0; i < pri->numchans; i++) {
struct sig_pri_chan *p = pri->pvts[i];
if (p) {
if (!p->pri || !p->pri->pri || pri_get_timer(p->pri->pri, PRI_TIMER_T309) < 0) {
/* T309 is not enabled : hangup calls when alarm occurs */
if (p->call) {
if (p->pri && p->pri->pri) {
pri_hangup(p->pri->pri, p->call, -1);
pri_destroycall(p->pri->pri, p->call);
p->call = NULL;
} else
ast_log(LOG_WARNING, "The PRI Call have not been destroyed\n");
}
if (p->owner)
ast_softhangup_nolock(p->owner, AST_SOFTHANGUP_DEV);
}
/* For PTMP connections with non persistent layer 2 we want
* to *not* declare inalarm unless there actually is an alarm */
if (p->pri->sig != SIG_BRI_PTMP) {
p->inalarm = 1;
}
}
}
}
break;
case PRI_EVENT_RESTART:
if (e->restart.channel > -1) {
chanpos = pri_find_principle(pri, e->restart.channel);
if (chanpos < 0)
ast_log(LOG_WARNING, "Restart requested on odd/unavailable channel number %d/%d on span %d\n",
PRI_SPAN(e->restart.channel), PRI_CHANNEL(e->restart.channel), pri->span);
else {
#ifdef HAVE_PRI_SERVICE_MESSAGES
char db_chan_name[20], db_answer[5], state;
int why, skipit = 0;
ast_mutex_lock(&pri->pvts[chanpos]->service_lock);
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, pri->pvts[chanpos]->pri->span, pri->pvts[chanpos]->channel);
ast_mutex_unlock(&pri->pvts[chanpos]->service_lock);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%c:%d", &state, &why);
if (why) {
ast_log(LOG_NOTICE, "span '%d' channel '%d' out-of-service (reason: %s), ignoring RESTART\n", pri->span,
e->restart.channel, (why & SRVST_FAREND) ? (why & SRVST_NEAREND) ? "both ends" : "far end" : "near end");
skipit = 1;
} else {
ast_db_del(db_chan_name, SRVST_DBKEY);
}
}
if (!skipit) {
#endif
ast_verb(3, "B-channel %d/%d restarted on span %d\n",
PRI_SPAN(e->restart.channel), PRI_CHANNEL(e->restart.channel), pri->span);
sig_pri_lock_private(pri->pvts[chanpos]);
if (pri->pvts[chanpos]->call) {
pri_destroycall(pri->pri, pri->pvts[chanpos]->call);
pri->pvts[chanpos]->call = NULL;
}
#ifdef HAVE_PRI_SERVICE_MESSAGES
}
#endif
/* Force soft hangup if appropriate */
if (pri->pvts[chanpos]->owner)
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
sig_pri_unlock_private(pri->pvts[chanpos]);
}
} else {
ast_verb(3, "Restart on requested on entire span %d\n", pri->span);
for (x = 0; x < pri->numchans; x++)
if (pri->pvts[x]) {
sig_pri_lock_private(pri->pvts[x]);
if (pri->pvts[x]->call) {
pri_destroycall(pri->pri, pri->pvts[x]->call);
pri->pvts[x]->call = NULL;
}
if (pri->pvts[x]->owner)
ast_softhangup_nolock(pri->pvts[x]->owner, AST_SOFTHANGUP_DEV);
sig_pri_unlock_private(pri->pvts[x]);
}
}
break;
case PRI_EVENT_KEYPAD_DIGIT:
chanpos = pri_find_principle(pri, e->digit.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "KEYPAD_DIGITs received on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->digit.channel), PRI_CHANNEL(e->digit.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->digit.call);
if (chanpos > -1) {
sig_pri_lock_private(pri->pvts[chanpos]);
/* queue DTMF frame if the PBX for this call was already started (we're forwarding KEYPAD_DIGITs further on */
if ((pri->overlapdial & DAHDI_OVERLAPDIAL_INCOMING) && pri->pvts[chanpos]->call==e->digit.call && pri->pvts[chanpos]->owner) {
/* how to do that */
int digitlen = strlen(e->digit.digits);
char digit;
int i;
for (i = 0; i < digitlen; i++) {
digit = e->digit.digits[i];
{
struct ast_frame f = { AST_FRAME_DTMF, digit, };
pri_queue_frame(pri->pvts[chanpos], &f, pri);
}
}
}
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
case PRI_EVENT_INFO_RECEIVED:
chanpos = pri_find_principle(pri, e->ring.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "INFO received on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->ring.channel), PRI_CHANNEL(e->ring.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->ring.call);
if (chanpos > -1) {
sig_pri_lock_private(pri->pvts[chanpos]);
/* queue DTMF frame if the PBX for this call was already started (we're forwarding INFORMATION further on */
if ((pri->overlapdial & DAHDI_OVERLAPDIAL_INCOMING) && pri->pvts[chanpos]->call==e->ring.call && pri->pvts[chanpos]->owner) {
/* how to do that */
int digitlen = strlen(e->ring.callednum);
char digit;
int i;
for (i = 0; i < digitlen; i++) {
digit = e->ring.callednum[i];
{
struct ast_frame f = { AST_FRAME_DTMF, digit, };
pri_queue_frame(pri->pvts[chanpos], &f, pri);
}
}
}
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
#ifdef HAVE_PRI_SERVICE_MESSAGES
case PRI_EVENT_SERVICE:
chanpos = pri_find_principle(pri, e->service.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Received service change status %d on unconfigured channel %d/%d span %d\n",
e->service_ack.changestatus, PRI_SPAN(e->service_ack.channel), PRI_CHANNEL(e->service_ack.channel), pri->span);
} else {
char db_chan_name[20], db_answer[5], state;
int ch, why = -1;
ast_mutex_lock(&pri->pvts[chanpos]->service_lock);
ch = pri->pvts[chanpos]->channel;
ast_mutex_unlock(&pri->pvts[chanpos]->service_lock);
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, pri->pvts[chanpos]->pri->span, ch);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%c:%d", &state, &why);
ast_db_del(db_chan_name, SRVST_DBKEY);
}
switch (e->service.changestatus) {
case 0: /* in-service */
if (why > -1) {
if (why & SRVST_NEAREND) {
snprintf(db_answer, sizeof(db_answer), "%s:%d", SRVST_TYPE_OOS, SRVST_NEAREND);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
ast_debug(2, "channel '%d' service state { near: out-of-service, far: in-service }\n", ch);
}
}
break;
case 2: /* out-of-service */
if (why == -1) {
why = SRVST_FAREND;
} else {
why |= SRVST_FAREND;
}
snprintf(db_answer, sizeof(db_answer), "%s:%d", SRVST_TYPE_OOS, why);
ast_db_put(db_chan_name, SRVST_DBKEY, db_answer);
break;
default:
ast_log(LOG_ERROR, "Huh? changestatus is: %d\n", e->service.changestatus);
}
ast_log(LOG_NOTICE, "Channel %d/%d span %d (logical: %d) received a change of service message, status '%d'\n",
PRI_SPAN(e->service.channel), PRI_CHANNEL(e->service.channel), pri->span, ch, e->service.changestatus);
}
break;
case PRI_EVENT_SERVICE_ACK:
chanpos = pri_find_principle(pri, e->service_ack.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Received service acknowledge change status '%d' on unconfigured channel %d/%d span %d\n",
e->service_ack.changestatus, PRI_SPAN(e->service_ack.channel), PRI_CHANNEL(e->service_ack.channel), pri->span);
} else {
ast_debug(2, "Channel %d/%d span %d received a change os service acknowledgement message, status '%d'\n",
PRI_SPAN(e->service_ack.channel), PRI_CHANNEL(e->service_ack.channel), pri->span, e->service_ack.changestatus);
}
break;
#endif
case PRI_EVENT_RING:
if (e->ring.channel == -1)
chanpos = pri_find_empty_chan(pri, 1);
else
chanpos = pri_find_principle(pri, e->ring.channel);
/* if no channel specified find one empty */
if (chanpos < 0) {
ast_log(LOG_WARNING, "Ring requested on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->ring.channel), PRI_CHANNEL(e->ring.channel), pri->span);
} else {
sig_pri_lock_private(pri->pvts[chanpos]);
if (pri->pvts[chanpos]->owner) {
if (pri->pvts[chanpos]->call == e->ring.call) {
ast_log(LOG_WARNING, "Duplicate setup requested on channel %d/%d already in use on span %d\n",
PRI_SPAN(e->ring.channel), PRI_CHANNEL(e->ring.channel), pri->span);
break;
} else {
/* This is where we handle initial glare */
ast_debug(1, "Ring requested on channel %d/%d already in use or previously requested on span %d. Attempting to renegotiating channel.\n",
PRI_SPAN(e->ring.channel), PRI_CHANNEL(e->ring.channel), pri->span);
sig_pri_unlock_private(pri->pvts[chanpos]);
chanpos = -1;
}
}
if (chanpos > -1)
sig_pri_unlock_private(pri->pvts[chanpos]);
}
if ((chanpos < 0) && (e->ring.flexible))
chanpos = pri_find_empty_chan(pri, 1);
if (chanpos > -1) {
sig_pri_lock_private(pri->pvts[chanpos]);
pri->pvts[chanpos]->call = e->ring.call;
apply_plan_to_number(plancallingnum, sizeof(plancallingnum), pri, e->ring.callingnum, e->ring.callingplan);
if (pri->pvts[chanpos]->use_callerid) {
ast_shrink_phone_number(plancallingnum);
ast_copy_string(pri->pvts[chanpos]->cid_num, plancallingnum, sizeof(pri->pvts[chanpos]->cid_num));
#ifdef PRI_ANI
if (!ast_strlen_zero(e->ring.callingani)) {
apply_plan_to_number(plancallingani, sizeof(plancallingani), pri, e->ring.callingani, e->ring.callingplanani);
ast_shrink_phone_number(plancallingani);
ast_copy_string(pri->pvts[chanpos]->cid_ani, plancallingani, sizeof(pri->pvts[chanpos]->cid_ani));
} else {
pri->pvts[chanpos]->cid_ani[0] = '\0';
}
#endif
ast_copy_string(pri->pvts[chanpos]->cid_name, e->ring.callingname, sizeof(pri->pvts[chanpos]->cid_name));
pri->pvts[chanpos]->cid_ton = e->ring.callingplan; /* this is the callingplan (TON/NPI), e->ring.callingplan>>4 would be the TON */
} else {
pri->pvts[chanpos]->cid_num[0] = '\0';
pri->pvts[chanpos]->cid_ani[0] = '\0';
pri->pvts[chanpos]->cid_name[0] = '\0';
pri->pvts[chanpos]->cid_ton = 0;
}
apply_plan_to_number(pri->pvts[chanpos]->rdnis, sizeof(pri->pvts[chanpos]->rdnis), pri,
e->ring.redirectingnum, e->ring.callingplanrdnis);
/* If immediate=yes go to s|1 */
if (pri->pvts[chanpos]->immediate) {
ast_verb(3, "Going to extension s|1 because of immediate=yes\n");
pri->pvts[chanpos]->exten[0] = 's';
pri->pvts[chanpos]->exten[1] = '\0';
}
/* Get called number */
else if (!ast_strlen_zero(e->ring.callednum)) {
ast_copy_string(pri->pvts[chanpos]->exten, e->ring.callednum, sizeof(pri->pvts[chanpos]->exten));
ast_copy_string(pri->pvts[chanpos]->dnid, e->ring.callednum, sizeof(pri->pvts[chanpos]->dnid));
} else if (pri->overlapdial)
pri->pvts[chanpos]->exten[0] = '\0';
else {
/* Some PRI circuits are set up to send _no_ digits. Handle them as 's'. */
pri->pvts[chanpos]->exten[0] = 's';
pri->pvts[chanpos]->exten[1] = '\0';
}
/* Set DNID on all incoming calls -- even immediate */
if (!ast_strlen_zero(e->ring.callednum))
ast_copy_string(pri->pvts[chanpos]->dnid, e->ring.callednum, sizeof(pri->pvts[chanpos]->dnid));
/* No number yet, but received "sending complete"? */
if (e->ring.complete && (ast_strlen_zero(e->ring.callednum))) {
ast_verb(3, "Going to extension s|1 because of Complete received\n");
pri->pvts[chanpos]->exten[0] = 's';
pri->pvts[chanpos]->exten[1] = '\0';
}
/* Make sure extension exists (or in overlap dial mode, can exist) */
if (((pri->overlapdial & DAHDI_OVERLAPDIAL_INCOMING) && ast_canmatch_extension(NULL, pri->pvts[chanpos]->context, pri->pvts[chanpos]->exten, 1, pri->pvts[chanpos]->cid_num)) ||
ast_exists_extension(NULL, pri->pvts[chanpos]->context, pri->pvts[chanpos]->exten, 1, pri->pvts[chanpos]->cid_num)) {
/* Setup law */
if (e->ring.complete || !(pri->overlapdial & DAHDI_OVERLAPDIAL_INCOMING)) {
/* Just announce proceeding */
pri->pvts[chanpos]->proceeding = 1;
pri_proceeding(pri->pri, e->ring.call, PVT_TO_CHANNEL(pri->pvts[chanpos]), 0);
} else {
if (pri->switchtype != PRI_SWITCH_GR303_TMC)
pri_need_more_info(pri->pri, e->ring.call, PVT_TO_CHANNEL(pri->pvts[chanpos]), 1);
else
pri_answer(pri->pri, e->ring.call, PVT_TO_CHANNEL(pri->pvts[chanpos]), 1);
}
/* Get the use_callingpres state */
pri->pvts[chanpos]->callingpres = e->ring.callingpres;
/* Start PBX */
if (!e->ring.complete && (pri->overlapdial & DAHDI_OVERLAPDIAL_INCOMING) && ast_matchmore_extension(NULL, pri->pvts[chanpos]->context, pri->pvts[chanpos]->exten, 1, pri->pvts[chanpos]->cid_num)) {
/* Release the PRI lock while we create the channel */
ast_mutex_unlock(&pri->lock);
c = sig_pri_new_ast_channel(pri->pvts[chanpos], AST_STATE_RESERVED, 0, (e->ring.layer1 = PRI_LAYER_1_ALAW) ? SIG_PRI_ALAW : SIG_PRI_ULAW, e->ring.ctype, pri->pvts[chanpos]->exten, NULL);
sig_pri_unlock_private(pri->pvts[chanpos]);
if (!ast_strlen_zero(e->ring.callingsubaddr)) {
pbx_builtin_setvar_helper(c, "CALLINGSUBADDR", e->ring.callingsubaddr);
}
if (e->ring.ani2 >= 0) {
snprintf(ani2str, 5, "%.2d", e->ring.ani2);
pbx_builtin_setvar_helper(c, "ANI2", ani2str);
pri->pvts[chanpos]->cid_ani2 = e->ring.ani2;
}
#ifdef SUPPORT_USERUSER
if (!ast_strlen_zero(e->ring.useruserinfo)) {
pbx_builtin_setvar_helper(c, "USERUSERINFO", e->ring.useruserinfo);
}
#endif
snprintf(calledtonstr, sizeof(calledtonstr)-1, "%d", e->ring.calledplan);
pbx_builtin_setvar_helper(c, "CALLEDTON", calledtonstr);
if (e->ring.redirectingreason >= 0)
pbx_builtin_setvar_helper(c, "PRIREDIRECTREASON", redirectingreason2str(e->ring.redirectingreason));
sig_pri_lock_private(pri->pvts[chanpos]);
ast_mutex_lock(&pri->lock);
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (c && !ast_pthread_create(&threadid, &attr, pri_ss_thread, pri->pvts[chanpos])) {
ast_verb(3, "Accepting overlap call from '%s' to '%s' on channel %d/%d, span %d\n",
plancallingnum, S_OR(pri->pvts[chanpos]->exten, "<unspecified>"),
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span);
} else {
ast_log(LOG_WARNING, "Unable to start PBX on channel %d/%d, span %d\n",
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span);
if (c)
ast_hangup(c);
else {
pri_hangup(pri->pri, e->ring.call, PRI_CAUSE_SWITCH_CONGESTION);
pri->pvts[chanpos]->call = NULL;
}
}
pthread_attr_destroy(&attr);
} else {
ast_mutex_unlock(&pri->lock);
/* Release PRI lock while we create the channel */
c = sig_pri_new_ast_channel(pri->pvts[chanpos], AST_STATE_RING, 1, (e->ring.layer1 == PRI_LAYER_1_ALAW) ? SIG_PRI_ALAW : SIG_PRI_ULAW, e->ring.ctype, pri->pvts[chanpos]->exten, NULL);
if (c) {
char calledtonstr[10];
sig_pri_unlock_private(pri->pvts[chanpos]);
if (e->ring.ani2 >= 0) {
snprintf(ani2str, 5, "%d", e->ring.ani2);
pbx_builtin_setvar_helper(c, "ANI2", ani2str);
pri->pvts[chanpos]->cid_ani2 = e->ring.ani2;
}
#ifdef SUPPORT_USERUSER
if (!ast_strlen_zero(e->ring.useruserinfo)) {
pbx_builtin_setvar_helper(c, "USERUSERINFO", e->ring.useruserinfo);
}
#endif
if (e->ring.redirectingreason >= 0)
pbx_builtin_setvar_helper(c, "PRIREDIRECTREASON", redirectingreason2str(e->ring.redirectingreason));
snprintf(calledtonstr, sizeof(calledtonstr)-1, "%d", e->ring.calledplan);
pbx_builtin_setvar_helper(c, "CALLEDTON", calledtonstr);
sig_pri_lock_private(pri->pvts[chanpos]);
ast_mutex_lock(&pri->lock);
ast_verb(3, "Accepting call from '%s' to '%s' on channel %d/%d, span %d\n",
plancallingnum, pri->pvts[chanpos]->exten,
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span);
sig_pri_set_echocanceller(pri->pvts[chanpos], 1);
} else {
ast_mutex_lock(&pri->lock);
ast_log(LOG_WARNING, "Unable to start PBX on channel %d/%d, span %d\n",
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span);
pri_hangup(pri->pri, e->ring.call, PRI_CAUSE_SWITCH_CONGESTION);
pri->pvts[chanpos]->call = NULL;
}
}
} else {
ast_verb(3, "Extension '%s' in context '%s' from '%s' does not exist. Rejecting call on channel %d/%d, span %d\n",
pri->pvts[chanpos]->exten, pri->pvts[chanpos]->context, pri->pvts[chanpos]->cid_num, pri->pvts[chanpos]->logicalspan,
pri->pvts[chanpos]->prioffset, pri->span);
pri_hangup(pri->pri, e->ring.call, PRI_CAUSE_UNALLOCATED);
pri->pvts[chanpos]->call = NULL;
pri->pvts[chanpos]->exten[0] = '\0';
}
sig_pri_unlock_private(pri->pvts[chanpos]);
} else {
if (e->ring.flexible)
pri_hangup(pri->pri, e->ring.call, PRI_CAUSE_NORMAL_CIRCUIT_CONGESTION);
else
pri_hangup(pri->pri, e->ring.call, PRI_CAUSE_REQUESTED_CHAN_UNAVAIL);
}
break;
case PRI_EVENT_RINGING:
chanpos = pri_find_principle(pri, e->ringing.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Ringing requested on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->ringing.channel), PRI_CHANNEL(e->ringing.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->ringing.call);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Ringing requested on channel %d/%d not in use on span %d\n",
PRI_SPAN(e->ringing.channel), PRI_CHANNEL(e->ringing.channel), pri->span);
} else {
sig_pri_lock_private(pri->pvts[chanpos]);
sig_pri_set_echocanceller(pri->pvts[chanpos], 1);
pri_queue_control(pri->pvts[chanpos], AST_CONTROL_RINGING, pri);
pri->pvts[chanpos]->alerting = 1;
#ifdef PRI_PROGRESS_MASK
if (e->ringing.progressmask & PRI_PROG_INBAND_AVAILABLE) {
#else
if (e->ringing.progress == 8) {
#endif
}
#ifdef SUPPORT_USERUSER
if (!ast_strlen_zero(e->ringing.useruserinfo)) {
struct ast_channel *owner = pri->pvts[chanpos]->owner;
sig_pri_unlock_private(pri->pvts[chanpos]);
pbx_builtin_setvar_helper(owner, "USERUSERINFO", e->ringing.useruserinfo);
sig_pri_lock_private(pri->pvts[chanpos]);
}
#endif
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
case PRI_EVENT_PROGRESS:
/* Get chan value if e->e is not PRI_EVNT_RINGING */
chanpos = pri_find_principle(pri, e->proceeding.channel);
if (chanpos > -1) {
#ifdef PRI_PROGRESS_MASK
if ((!pri->pvts[chanpos]->progress) || (e->proceeding.progressmask & PRI_PROG_INBAND_AVAILABLE)) {
#else
if ((!pri->pvts[chanpos]->progress) || (e->proceeding.progress == 8)) {
#endif
struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_PROGRESS, };
if (e->proceeding.cause > -1) {
ast_verb(3, "PROGRESS with cause code %d received\n", e->proceeding.cause);
/* Work around broken, out of spec USER_BUSY cause in a progress message */
if (e->proceeding.cause == AST_CAUSE_USER_BUSY) {
if (pri->pvts[chanpos]->owner) {
ast_verb(3, "PROGRESS with 'user busy' received, signaling AST_CONTROL_BUSY instead of AST_CONTROL_PROGRESS\n");
pri->pvts[chanpos]->owner->hangupcause = e->proceeding.cause;
f.subclass = AST_CONTROL_BUSY;
}
}
}
sig_pri_lock_private(pri->pvts[chanpos]);
ast_log(LOG_DEBUG, "Queuing frame from PRI_EVENT_PROGRESS on channel %d/%d span %d\n",
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset,pri->span);
pri_queue_frame(pri->pvts[chanpos], &f, pri);
#ifdef PRI_PROGRESS_MASK
if (e->proceeding.progressmask & PRI_PROG_INBAND_AVAILABLE) {
#else
if (e->proceeding.progress == 8) {
#endif
/* Bring voice path up */
f.subclass = AST_CONTROL_PROGRESS;
pri_queue_frame(pri->pvts[chanpos], &f, pri);
}
pri->pvts[chanpos]->progress = 1;
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
case PRI_EVENT_PROCEEDING:
chanpos = pri_find_principle(pri, e->proceeding.channel);
if (chanpos > -1) {
if (!pri->pvts[chanpos]->proceeding) {
struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_PROCEEDING, };
sig_pri_lock_private(pri->pvts[chanpos]);
ast_log(LOG_DEBUG, "Queuing frame from PRI_EVENT_PROCEEDING on channel %d/%d span %d\n",
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset,pri->span);
pri_queue_frame(pri->pvts[chanpos], &f, pri);
#ifdef PRI_PROGRESS_MASK
if (e->proceeding.progressmask & PRI_PROG_INBAND_AVAILABLE) {
#else
if (e->proceeding.progress == 8) {
#endif
/* Bring voice path up */
f.subclass = AST_CONTROL_PROGRESS;
pri_queue_frame(pri->pvts[chanpos], &f, pri);
}
pri->pvts[chanpos]->proceeding = 1;
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
case PRI_EVENT_FACNAME:
chanpos = pri_find_principle(pri, e->facname.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Facility Name requested on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->facname.channel), PRI_CHANNEL(e->facname.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->facname.call);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Facility Name requested on channel %d/%d not in use on span %d\n",
PRI_SPAN(e->facname.channel), PRI_CHANNEL(e->facname.channel), pri->span);
} else {
/* Re-use *69 field for PRI */
sig_pri_lock_private(pri->pvts[chanpos]);
ast_copy_string(pri->pvts[chanpos]->lastcid_num, e->facname.callingnum, sizeof(pri->pvts[chanpos]->lastcid_num));
ast_copy_string(pri->pvts[chanpos]->lastcid_name, e->facname.callingname, sizeof(pri->pvts[chanpos]->lastcid_name));
pri_update_cid(pri->pvts[chanpos], pri);
sig_pri_set_echocanceller(pri->pvts[chanpos], 1);
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
case PRI_EVENT_ANSWER:
chanpos = pri_find_principle(pri, e->answer.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Answer on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->answer.channel), PRI_CHANNEL(e->answer.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->answer.call);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Answer requested on channel %d/%d not in use on span %d\n",
PRI_SPAN(e->answer.channel), PRI_CHANNEL(e->answer.channel), pri->span);
} else {
sig_pri_lock_private(pri->pvts[chanpos]);
pri_queue_control(pri->pvts[chanpos], AST_CONTROL_ANSWER, pri);
/* Enable echo cancellation if it's not on already */
sig_pri_set_echocanceller(pri->pvts[chanpos], 1);
#ifdef SUPPORT_USERUSER
if (!ast_strlen_zero(e->answer.useruserinfo)) {
struct ast_channel *owner = pri->pvts[chanpos]->owner;
sig_pri_unlock_private(pri->pvts[chanpos]);
pbx_builtin_setvar_helper(owner, "USERUSERINFO", e->answer.useruserinfo);
sig_pri_lock_private(pri->pvts[chanpos]);
}
#endif
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
case PRI_EVENT_HANGUP:
chanpos = pri_find_principle(pri, e->hangup.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Hangup requested on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->hangup.call);
if (chanpos > -1) {
sig_pri_lock_private(pri->pvts[chanpos]);
if (!pri->pvts[chanpos]->alreadyhungup) {
/* we're calling here dahdi_hangup so once we get there we need to clear p->call after calling pri_hangup */
pri->pvts[chanpos]->alreadyhungup = 1;
if (pri->pvts[chanpos]->owner) {
/* Queue a BUSY instead of a hangup if our cause is appropriate */
pri->pvts[chanpos]->owner->hangupcause = e->hangup.cause;
if (pri->pvts[chanpos]->owner->_state == AST_STATE_UP)
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
else {
switch (e->hangup.cause) {
case PRI_CAUSE_USER_BUSY:
pri_queue_control(pri->pvts[chanpos], AST_CONTROL_BUSY, pri);
break;
case PRI_CAUSE_CALL_REJECTED:
case PRI_CAUSE_NETWORK_OUT_OF_ORDER:
case PRI_CAUSE_NORMAL_CIRCUIT_CONGESTION:
case PRI_CAUSE_SWITCH_CONGESTION:
case PRI_CAUSE_DESTINATION_OUT_OF_ORDER:
case PRI_CAUSE_NORMAL_TEMPORARY_FAILURE:
pri_queue_control(pri->pvts[chanpos], AST_CONTROL_CONGESTION, pri);
break;
default:
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
}
}
}
ast_verb(3, "Channel %d/%d, span %d got hangup, cause %d\n",
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span, e->hangup.cause);
} else {
pri_hangup(pri->pri, pri->pvts[chanpos]->call, e->hangup.cause);
pri->pvts[chanpos]->call = NULL;
}
if (e->hangup.cause == PRI_CAUSE_REQUESTED_CHAN_UNAVAIL) {
ast_verb(3, "Forcing restart of channel %d/%d on span %d since channel reported in use\n",
PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
pri_reset(pri->pri, PVT_TO_CHANNEL(pri->pvts[chanpos]));
pri->pvts[chanpos]->resetting = 1;
}
if (e->hangup.aoc_units > -1)
ast_verb(3, "Channel %d/%d, span %d received AOC-E charging %d unit%s\n",
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span, (int)e->hangup.aoc_units, (e->hangup.aoc_units == 1) ? "" : "s");
#ifdef SUPPORT_USERUSER
if (pri->pvts[chanpos]->owner && !ast_strlen_zero(e->hangup.useruserinfo)) {
struct ast_channel *owner = pri->pvts[chanpos]->owner;
sig_pri_unlock_private(pri->pvts[chanpos]);
pbx_builtin_setvar_helper(owner, "USERUSERINFO", e->hangup.useruserinfo);
sig_pri_lock_private(pri->pvts[chanpos]);
}
#endif
sig_pri_unlock_private(pri->pvts[chanpos]);
} else {
ast_log(LOG_WARNING, "Hangup on bad channel %d/%d on span %d\n",
PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
}
}
break;
#ifndef PRI_EVENT_HANGUP_REQ
#error please update libpri
#endif
case PRI_EVENT_HANGUP_REQ:
chanpos = pri_find_principle(pri, e->hangup.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Hangup REQ requested on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->hangup.call);
if (chanpos > -1) {
sig_pri_lock_private(pri->pvts[chanpos]);
if (pri->pvts[chanpos]->owner) {
pri->pvts[chanpos]->owner->hangupcause = e->hangup.cause;
if (pri->pvts[chanpos]->owner->_state == AST_STATE_UP)
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
else {
switch (e->hangup.cause) {
case PRI_CAUSE_USER_BUSY:
pri_queue_control(pri->pvts[chanpos], AST_CONTROL_BUSY, pri);
break;
case PRI_CAUSE_CALL_REJECTED:
case PRI_CAUSE_NETWORK_OUT_OF_ORDER:
case PRI_CAUSE_NORMAL_CIRCUIT_CONGESTION:
case PRI_CAUSE_SWITCH_CONGESTION:
case PRI_CAUSE_DESTINATION_OUT_OF_ORDER:
case PRI_CAUSE_NORMAL_TEMPORARY_FAILURE:
pri_queue_control(pri->pvts[chanpos], AST_CONTROL_CONGESTION, pri);
break;
default:
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
}
}
ast_verb(3, "Channel %d/%d, span %d got hangup request, cause %d\n", PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span, e->hangup.cause);
if (e->hangup.aoc_units > -1)
ast_verb(3, "Channel %d/%d, span %d received AOC-E charging %d unit%s\n",
pri->pvts[chanpos]->logicalspan, pri->pvts[chanpos]->prioffset, pri->span, (int)e->hangup.aoc_units, (e->hangup.aoc_units == 1) ? "" : "s");
} else {
pri_hangup(pri->pri, pri->pvts[chanpos]->call, e->hangup.cause);
pri->pvts[chanpos]->call = NULL;
}
if (e->hangup.cause == PRI_CAUSE_REQUESTED_CHAN_UNAVAIL) {
ast_verb(3, "Forcing restart of channel %d/%d span %d since channel reported in use\n",
PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
pri_reset(pri->pri, PVT_TO_CHANNEL(pri->pvts[chanpos]));
pri->pvts[chanpos]->resetting = 1;
}
#ifdef SUPPORT_USERUSER
if (!ast_strlen_zero(e->hangup.useruserinfo)) {
struct ast_channel *owner = pri->pvts[chanpos]->owner;
sig_pri_unlock_private(pri->pvts[chanpos]);
pbx_builtin_setvar_helper(owner, "USERUSERINFO", e->hangup.useruserinfo);
sig_pri_lock_private(pri->pvts[chanpos]);
}
#endif
sig_pri_unlock_private(pri->pvts[chanpos]);
} else {
ast_log(LOG_WARNING, "Hangup REQ on bad channel %d/%d on span %d\n", PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
}
}
break;
case PRI_EVENT_HANGUP_ACK:
chanpos = pri_find_principle(pri, e->hangup.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Hangup ACK requested on unconfigured channel number %d/%d span %d\n",
PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->hangup.call);
if (chanpos > -1) {
sig_pri_lock_private(pri->pvts[chanpos]);
pri->pvts[chanpos]->call = NULL;
pri->pvts[chanpos]->resetting = 0;
if (pri->pvts[chanpos]->owner) {
ast_verb(3, "Channel %d/%d, span %d got hangup ACK\n", PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
}
#ifdef SUPPORT_USERUSER
if (!ast_strlen_zero(e->hangup.useruserinfo)) {
struct ast_channel *owner = pri->pvts[chanpos]->owner;
sig_pri_unlock_private(pri->pvts[chanpos]);
pbx_builtin_setvar_helper(owner, "USERUSERINFO", e->hangup.useruserinfo);
sig_pri_lock_private(pri->pvts[chanpos]);
}
#endif
sig_pri_unlock_private(pri->pvts[chanpos]);
}
}
break;
case PRI_EVENT_CONFIG_ERR:
ast_log(LOG_WARNING, "PRI Error on span %d: %s\n", pri->trunkgroup, e->err.err);
break;
case PRI_EVENT_RESTART_ACK:
chanpos = pri_find_principle(pri, e->restartack.channel);
if (chanpos < 0) {
/* Sometime switches (e.g. I421 / British Telecom) don't give us the
channel number, so we have to figure it out... This must be why
everybody resets exactly a channel at a time. */
for (x = 0; x < pri->numchans; x++) {
if (pri->pvts[x] && pri->pvts[x]->resetting) {
chanpos = x;
sig_pri_lock_private(pri->pvts[chanpos]);
ast_log(LOG_DEBUG, "Assuming restart ack is really for channel %d/%d span %d\n", pri->pvts[chanpos]->logicalspan,
pri->pvts[chanpos]->prioffset, pri->span);
if (pri->pvts[chanpos]->owner) {
ast_log(LOG_WARNING, "Got restart ack on channel %d/%d with owner on span %d\n", pri->pvts[chanpos]->logicalspan,
pri->pvts[chanpos]->prioffset, pri->span);
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
}
pri->pvts[chanpos]->resetting = 0;
ast_verb(3, "B-channel %d/%d successfully restarted on span %d\n", pri->pvts[chanpos]->logicalspan,
pri->pvts[chanpos]->prioffset, pri->span);
sig_pri_unlock_private(pri->pvts[chanpos]);
if (pri->resetting)
pri_check_restart(pri);
break;
}
}
if (chanpos < 0) {
ast_log(LOG_WARNING, "Restart ACK requested on strange channel %d/%d span %d\n",
PRI_SPAN(e->restartack.channel), PRI_CHANNEL(e->restartack.channel), pri->span);
}
} else {
if (pri->pvts[chanpos]) {
sig_pri_lock_private(pri->pvts[chanpos]);
if (pri->pvts[chanpos]->owner) {
ast_log(LOG_WARNING, "Got restart ack on channel %d/%d span %d with owner\n",
PRI_SPAN(e->restartack.channel), PRI_CHANNEL(e->restartack.channel), pri->span);
ast_softhangup_nolock(pri->pvts[chanpos]->owner, AST_SOFTHANGUP_DEV);
}
pri->pvts[chanpos]->resetting = 0;
ast_verb(3, "B-channel %d/%d successfully restarted on span %d\n", pri->pvts[chanpos]->logicalspan,
pri->pvts[chanpos]->prioffset, pri->span);
sig_pri_unlock_private(pri->pvts[chanpos]);
if (pri->resetting)
pri_check_restart(pri);
}
}
break;
case PRI_EVENT_SETUP_ACK:
chanpos = pri_find_principle(pri, e->setup_ack.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Received SETUP_ACKNOWLEDGE on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->setup_ack.channel), PRI_CHANNEL(e->setup_ack.channel), pri->span);
} else {
chanpos = pri_fixup_principle(pri, chanpos, e->setup_ack.call);
if (chanpos > -1) {
sig_pri_lock_private(pri->pvts[chanpos]);
pri->pvts[chanpos]->setup_ack = 1;
/* Send any queued digits */
for (x = 0;x < strlen(pri->pvts[chanpos]->dialdest); x++) {
ast_log(LOG_DEBUG, "Sending pending digit '%c'\n", pri->pvts[chanpos]->dialdest[x]);
pri_information(pri->pri, pri->pvts[chanpos]->call,
pri->pvts[chanpos]->dialdest[x]);
}
sig_pri_unlock_private(pri->pvts[chanpos]);
} else
ast_log(LOG_WARNING, "Unable to move channel %d!\n", e->setup_ack.channel);
}
break;
case PRI_EVENT_NOTIFY:
chanpos = pri_find_principle(pri, e->notify.channel);
if (chanpos < 0) {
ast_log(LOG_WARNING, "Received NOTIFY on unconfigured channel %d/%d span %d\n",
PRI_SPAN(e->notify.channel), PRI_CHANNEL(e->notify.channel), pri->span);
} else {
struct ast_frame f = { AST_FRAME_CONTROL, };
sig_pri_lock_private(pri->pvts[chanpos]);
switch (e->notify.info) {
case PRI_NOTIFY_REMOTE_HOLD:
f.subclass = AST_CONTROL_HOLD;
pri_queue_frame(pri->pvts[chanpos], &f, pri);
break;
case PRI_NOTIFY_REMOTE_RETRIEVAL:
f.subclass = AST_CONTROL_UNHOLD;
pri_queue_frame(pri->pvts[chanpos], &f, pri);
break;
}
sig_pri_unlock_private(pri->pvts[chanpos]);
}
break;
default:
ast_log(LOG_DEBUG, "Event: %d\n", e->e);
}
}
ast_mutex_unlock(&pri->lock);
}
/* Never reached */
return NULL;
}
void sig_pri_init_pri(struct sig_pri_pri *pri)
{
int i;
memset(pri, 0, sizeof(*pri));
ast_mutex_init(&pri->lock);
pri->master = AST_PTHREADT_NULL;
for (i = 0; i < NUM_DCHANS; i++)
pri->fds[i] = -1;
}
int sig_pri_hangup(struct sig_pri_chan *p, struct ast_channel *ast)
{
int res = 0;
#ifdef SUPPORT_USERUSER
const char *useruser = pbx_builtin_getvar_helper(ast, "USERUSERINFO");
#endif
ast_log(LOG_DEBUG, "%s %d\n", __FUNCTION__, p->channel);
if (!ast->tech_pvt) {
ast_log(LOG_WARNING, "Asked to hangup channel not connected\n");
return 0;
}
p->owner = NULL;
p->outgoing = 0;
p->digital = 0;
p->proceeding = 0;
p->progress = 0;
p->alerting = 0;
p->setup_ack = 0;
p->rdnis[0] = '\0';
p->exten[0] = '\0';
if (!p->call) {
res = 0;
goto exit;
}
/* Make sure we have a call (or REALLY have a call in the case of a PRI) */
if (!pri_grab(p, p->pri)) {
if (p->alreadyhungup) {
ast_log(LOG_DEBUG, "Already hungup... Calling hangup once, and clearing call\n");
#ifdef SUPPORT_USERUSER
pri_call_set_useruser(p->call, useruser);
#endif
pri_hangup(p->pri->pri, p->call, -1);
p->call = NULL;
} else {
const char *cause = pbx_builtin_getvar_helper(ast,"PRI_CAUSE");
int icause = ast->hangupcause ? ast->hangupcause : -1;
ast_log(LOG_DEBUG, "Not yet hungup... Calling hangup once with icause, and clearing call\n");
#ifdef SUPPORT_USERUSER
pri_call_set_useruser(p->call, useruser);
#endif
p->alreadyhungup = 1;
if (cause) {
if (atoi(cause))
icause = atoi(cause);
}
pri_hangup(p->pri->pri, p->call, icause);
}
if (res < 0)
ast_log(LOG_WARNING, "pri_disconnect failed\n");
pri_rel(p->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->pri->span);
res = -1;
}
exit:
ast->tech_pvt = NULL;
return res;
}
int sig_pri_call(struct sig_pri_chan *p, struct ast_channel *ast, char *rdest, int timeout, int layer1)
{
char dest[256]; /* must be same length as p->dialdest */
struct pri_sr *sr;
char *c, *l, *n, *s = NULL;
#ifdef SUPPORT_USERUSER
const char *useruser;
#endif
int pridialplan;
int dp_strip;
int prilocaldialplan;
int ldp_strip;
int exclusive;
const char *rr_str;
int redirect_reason;
ast_log(LOG_DEBUG, "CALLING CID_NAME: %s CID_NUM:: %s\n", ast->cid.cid_name, ast->cid.cid_num);
if (!p->pri) {
ast_log(LOG_ERROR, "Could not find pri on channel %d\n", p->channel);
return -1;
}
if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
ast_log(LOG_WARNING, "sig_pri_call called on %s, neither down nor reserved\n", ast->name);
return -1;
}
ast_copy_string(dest, rdest, sizeof(dest));
p->dialdest[0] = '\0';
p->outgoing = 1;
c = strchr(dest, '/');
if (c)
c++;
else
c = dest;
l = NULL;
n = NULL;
if (!p->hidecallerid) {
l = ast->connected.id.number;
if (!p->hidecalleridname) {
n = ast->connected.id.name;
}
}
if (strlen(c) < p->stripmsd) {
ast_log(LOG_WARNING, "Number '%s' is shorter than stripmsd (%d)\n", c, p->stripmsd);
return -1;
}
if (pri_grab(p, p->pri)) {
ast_log(LOG_WARNING, "Failed to grab PRI!\n");
return -1;
}
if (!(p->call = pri_new_call(p->pri->pri))) {
ast_log(LOG_WARNING, "Unable to create call on channel %d\n", p->channel);
pri_rel(p->pri);
return -1;
}
if (!(sr = pri_sr_new())) {
ast_log(LOG_WARNING, "Failed to allocate setup request channel %d\n", p->channel);
pri_destroycall(p->pri->pri, p->call);
p->call = NULL;
pri_rel(p->pri);
return -1;
}
p->digital = IS_DIGITAL(ast->transfercapability);
/* Should the picked channel be used exclusively? */
if (p->priexclusive || p->pri->nodetype == PRI_NETWORK) {
exclusive = 1;
} else {
exclusive = 0;
}
pri_sr_set_channel(sr, PVT_TO_CHANNEL(p), exclusive, 1);
pri_sr_set_bearer(sr, p->digital ? PRI_TRANS_CAP_DIGITAL : ast->transfercapability,
(p->digital ? -1 : layer1));
if (p->pri->facilityenable)
pri_facility_enable(p->pri->pri);
ast_verb(3, "Requested transfer capability: 0x%.2x - %s\n", ast->transfercapability, ast_transfercapability2str(ast->transfercapability));
dp_strip = 0;
pridialplan = p->pri->dialplan - 1;
if (pridialplan == -2 || pridialplan == -3) { /* compute dynamically */
if (strncmp(c + p->stripmsd, p->pri->internationalprefix, strlen(p->pri->internationalprefix)) == 0) {
if (pridialplan == -2) {
dp_strip = strlen(p->pri->internationalprefix);
}
pridialplan = PRI_INTERNATIONAL_ISDN;
} else if (strncmp(c + p->stripmsd, p->pri->nationalprefix, strlen(p->pri->nationalprefix)) == 0) {
if (pridialplan == -2) {
dp_strip = strlen(p->pri->nationalprefix);
}
pridialplan = PRI_NATIONAL_ISDN;
} else {
pridialplan = PRI_LOCAL_ISDN;
}
}
while (c[p->stripmsd] > '9' && c[p->stripmsd] != '*' && c[p->stripmsd] != '#') {
switch (c[p->stripmsd]) {
case 'U':
pridialplan = (PRI_TON_UNKNOWN << 4) | (pridialplan & 0xf);
break;
case 'I':
pridialplan = (PRI_TON_INTERNATIONAL << 4) | (pridialplan & 0xf);
break;
case 'N':
pridialplan = (PRI_TON_NATIONAL << 4) | (pridialplan & 0xf);
break;
case 'L':
pridialplan = (PRI_TON_NET_SPECIFIC << 4) | (pridialplan & 0xf);
break;
case 'S':
pridialplan = (PRI_TON_SUBSCRIBER << 4) | (pridialplan & 0xf);
break;
case 'V':
pridialplan = (PRI_TON_ABBREVIATED << 4) | (pridialplan & 0xf);
break;
case 'R':
pridialplan = (PRI_TON_RESERVED << 4) | (pridialplan & 0xf);
break;
case 'u':
pridialplan = PRI_NPI_UNKNOWN | (pridialplan & 0xf0);
break;
case 'e':
pridialplan = PRI_NPI_E163_E164 | (pridialplan & 0xf0);
break;
case 'x':
pridialplan = PRI_NPI_X121 | (pridialplan & 0xf0);
break;
case 'f':
pridialplan = PRI_NPI_F69 | (pridialplan & 0xf0);
break;
case 'n':
pridialplan = PRI_NPI_NATIONAL | (pridialplan & 0xf0);
break;
case 'p':
pridialplan = PRI_NPI_PRIVATE | (pridialplan & 0xf0);
break;
case 'r':
pridialplan = PRI_NPI_RESERVED | (pridialplan & 0xf0);
break;
default:
if (isalpha(c[p->stripmsd])) {
ast_log(LOG_WARNING, "Unrecognized pridialplan %s modifier: %c\n",
c[p->stripmsd] > 'Z' ? "NPI" : "TON", c[p->stripmsd]);
}
break;
}
c++;
}
pri_sr_set_called(sr, c + p->stripmsd + dp_strip, pridialplan, s ? 1 : 0);
ldp_strip = 0;
prilocaldialplan = p->pri->localdialplan - 1;
if ((l != NULL) && (prilocaldialplan == -2 || prilocaldialplan == -3)) { /* compute dynamically */
if (strncmp(l, p->pri->internationalprefix, strlen(p->pri->internationalprefix)) == 0) {
if (prilocaldialplan == -2) {
ldp_strip = strlen(p->pri->internationalprefix);
}
prilocaldialplan = PRI_INTERNATIONAL_ISDN;
} else if (strncmp(l, p->pri->nationalprefix, strlen(p->pri->nationalprefix)) == 0) {
if (prilocaldialplan == -2) {
ldp_strip = strlen(p->pri->nationalprefix);
}
prilocaldialplan = PRI_NATIONAL_ISDN;
} else {
prilocaldialplan = PRI_LOCAL_ISDN;
}
}
if (l != NULL) {
while (*l > '9' && *l != '*' && *l != '#') {
switch (*l) {
case 'U':
prilocaldialplan = (PRI_TON_UNKNOWN << 4) | (prilocaldialplan & 0xf);
break;
case 'I':
prilocaldialplan = (PRI_TON_INTERNATIONAL << 4) | (prilocaldialplan & 0xf);
break;
case 'N':
prilocaldialplan = (PRI_TON_NATIONAL << 4) | (prilocaldialplan & 0xf);
break;
case 'L':
prilocaldialplan = (PRI_TON_NET_SPECIFIC << 4) | (prilocaldialplan & 0xf);
break;
case 'S':
prilocaldialplan = (PRI_TON_SUBSCRIBER << 4) | (prilocaldialplan & 0xf);
break;
case 'V':
prilocaldialplan = (PRI_TON_ABBREVIATED << 4) | (prilocaldialplan & 0xf);
break;
case 'R':
prilocaldialplan = (PRI_TON_RESERVED << 4) | (prilocaldialplan & 0xf);
break;
case 'u':
prilocaldialplan = PRI_NPI_UNKNOWN | (prilocaldialplan & 0xf0);
break;
case 'e':
prilocaldialplan = PRI_NPI_E163_E164 | (prilocaldialplan & 0xf0);
break;
case 'x':
prilocaldialplan = PRI_NPI_X121 | (prilocaldialplan & 0xf0);
break;
case 'f':
prilocaldialplan = PRI_NPI_F69 | (prilocaldialplan & 0xf0);
break;
case 'n':
prilocaldialplan = PRI_NPI_NATIONAL | (prilocaldialplan & 0xf0);
break;
case 'p':
prilocaldialplan = PRI_NPI_PRIVATE | (prilocaldialplan & 0xf0);
break;
case 'r':
prilocaldialplan = PRI_NPI_RESERVED | (prilocaldialplan & 0xf0);
break;
default:
if (isalpha(*l)) {
ast_log(LOG_WARNING,
"Unrecognized prilocaldialplan %s modifier: %c\n",
*l > 'Z' ? "NPI" : "TON", *l);
}
break;
}
l++;
}
}
pri_sr_set_caller(sr, l ? (l + ldp_strip) : NULL, n, prilocaldialplan,
p->use_callingpres ? ast->cid.cid_pres : (l ? PRES_ALLOWED_USER_NUMBER_PASSED_SCREEN : PRES_NUMBER_NOT_AVAILABLE));
if ((rr_str = pbx_builtin_getvar_helper(ast, "PRIREDIRECTREASON"))) {
if (!strcasecmp(rr_str, "UNKNOWN"))
redirect_reason = 0;
else if (!strcasecmp(rr_str, "BUSY"))
redirect_reason = 1;
else if (!strcasecmp(rr_str, "NO_REPLY"))
redirect_reason = 2;
else if (!strcasecmp(rr_str, "UNCONDITIONAL"))
redirect_reason = 15;
else
redirect_reason = PRI_REDIR_UNCONDITIONAL;
} else
redirect_reason = PRI_REDIR_UNCONDITIONAL;
pri_sr_set_redirecting(sr, ast->cid.cid_rdnis, p->pri->localdialplan - 1, PRES_ALLOWED_USER_NUMBER_PASSED_SCREEN, redirect_reason);
#ifdef SUPPORT_USERUSER
/* User-user info */
useruser = pbx_builtin_getvar_helper(p->owner, "USERUSERINFO");
if (useruser)
pri_sr_set_useruser(sr, useruser);
#endif
if (pri_setup(p->pri->pri, p->call, sr)) {
ast_log(LOG_WARNING, "Unable to setup call to %s (using %s)\n",
c + p->stripmsd + dp_strip, dialplan2str(p->pri->dialplan));
pri_rel(p->pri);
pri_sr_free(sr);
return -1;
}
pri_sr_free(sr);
ast_setstate(ast, AST_STATE_DIALING);
pri_rel(p->pri);
return 0;
}
int sig_pri_indicate(struct sig_pri_chan *p, struct ast_channel *chan, int condition, const void *data, size_t datalen)
{
int res = 0;
switch (condition) {
case AST_CONTROL_BUSY:
if (p->priindication_oob) {
chan->hangupcause = AST_CAUSE_USER_BUSY;
chan->_softhangup |= AST_SOFTHANGUP_DEV;
res = 0;
} else if (!p->progress && p->pri && !p->outgoing) {
if (p->pri->pri) {
if (!pri_grab(p, p->pri)) {
#ifdef HAVE_PRI_PROG_W_CAUSE
pri_progress_with_cause(p->pri->pri,p->call, PVT_TO_CHANNEL(p), 1, PRI_CAUSE_USER_BUSY); /* cause = 17 */
#else
pri_progress(p->pri->pri,p->call, PVT_TO_CHANNEL(p), 1);
#endif
pri_rel(p->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->pri->span);
}
}
p->progress = 1;
res = sig_pri_play_tone(p, SIG_PRI_TONE_BUSY);
}
break;
case AST_CONTROL_RINGING:
if ((!p->alerting) && p->pri && !p->outgoing && (chan->_state != AST_STATE_UP)) {
if (p->pri->pri) {
if (!pri_grab(p, p->pri)) {
pri_acknowledge(p->pri->pri,p->call, PVT_TO_CHANNEL(p), !p->digital);
pri_rel(p->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->pri->span);
}
}
p->alerting = 1;
}
res = sig_pri_play_tone(p, SIG_PRI_TONE_RINGTONE);
if (chan->_state != AST_STATE_UP) {
if (chan->_state != AST_STATE_RING)
ast_setstate(chan, AST_STATE_RINGING);
}
break;
case AST_CONTROL_PROCEEDING:
ast_debug(1,"Received AST_CONTROL_PROCEEDING on %s\n",chan->name);
if (!p->proceeding && p->pri && !p->outgoing) {
if (p->pri->pri) {
if (!pri_grab(p, p->pri)) {
pri_proceeding(p->pri->pri,p->call, PVT_TO_CHANNEL(p), !p->digital);
pri_rel(p->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->pri->span);
}
}
p->proceeding = 1;
}
/* don't continue in ast_indicate */
res = 0;
break;
case AST_CONTROL_PROGRESS:
ast_log(LOG_DEBUG,"Received AST_CONTROL_PROGRESS on %s\n",chan->name);
p->digital = 0; /* Digital-only calls isn't allowing any inband progress messages */
if (!p->progress && p->pri && !p->outgoing) {
if (p->pri->pri) {
if (!pri_grab(p, p->pri)) {
pri_progress(p->pri->pri,p->call, PVT_TO_CHANNEL(p), 1);
pri_rel(p->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->pri->span);
}
}
p->progress = 1;
}
/* don't continue in ast_indicate */
res = 0;
break;
case AST_CONTROL_CONGESTION:
chan->hangupcause = AST_CAUSE_CONGESTION;
if (p->priindication_oob) {
chan->hangupcause = AST_CAUSE_SWITCH_CONGESTION;
chan->_softhangup |= AST_SOFTHANGUP_DEV;
res = 0;
} else if (!p->progress && p->pri && !p->outgoing) {
if (p->pri) {
if (!pri_grab(p, p->pri)) {
#ifdef HAVE_PRI_PROG_W_CAUSE
pri_progress_with_cause(p->pri->pri,p->call, PVT_TO_CHANNEL(p), 1, PRI_CAUSE_SWITCH_CONGESTION); /* cause = 42 */
#else
pri_progress(p->pri->pri,p->call, PVT_TO_CHANNEL(p), 1);
#endif
pri_rel(p->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->pri->span);
}
}
p->progress = 1;
res = sig_pri_play_tone(p, SIG_PRI_TONE_CONGESTION);
}
break;
case AST_CONTROL_HOLD:
if (p->pri && !strcasecmp(p->mohinterpret, "passthrough")) {
if (!pri_grab(p, p->pri)) {
res = pri_notify(p->pri->pri, p->call, p->prioffset, PRI_NOTIFY_REMOTE_HOLD);
pri_rel(p->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", p->pri->span);
}
} else
ast_moh_start(chan, data, p->mohinterpret);
break;
case AST_CONTROL_UNHOLD:
if (p->pri && !strcasecmp(p->mohinterpret, "passthrough")) {
if (!pri_grab(p, p->pri)) {
res = pri_notify(p->pri->pri, p->call, p->prioffset, PRI_NOTIFY_REMOTE_RETRIEVAL);
pri_rel(p->pri);
}
} else
ast_moh_stop(chan);
break;
case AST_CONTROL_SRCUPDATE:
res = 0;
break;
case -1:
res = sig_pri_play_tone(p, -1);
break;
}
return res;
}
int sig_pri_answer(struct sig_pri_chan *p, struct ast_channel *ast)
{
int res = 0;
/* Send a pri acknowledge */
if (!pri_grab(p, p->pri)) {
p->proceeding = 1;
res = pri_answer(p->pri->pri, p->call, 0, !p->digital);
pri_rel(p->pri);
} else {
res = -1;
}
ast_setstate(ast, AST_STATE_UP);
return res;
}
int sig_pri_available(struct sig_pri_chan *p, int channelmatch, ast_group_t groupmatch, int *reason, int *channelmatched, int *groupmatched)
{
/* If no owner definitely available */
if (!p->owner) {
/* Trust PRI */
if (p->pri) {
#ifdef HAVE_PRI_SERVICE_MESSAGES
char db_chan_name[20], db_answer[5], state;
int why = 0;
snprintf(db_chan_name, sizeof(db_chan_name), "%s/%d:%d", dahdi_db, p->pri->span, p->channel);
if (!ast_db_get(db_chan_name, SRVST_DBKEY, db_answer, sizeof(db_answer))) {
sscanf(db_answer, "%c:%d", &state, &why);
}
if ((p->resetting || p->call) || (why)) {
if (why) {
*reason = AST_CAUSE_REQUESTED_CHAN_UNAVAIL;
}
#else
if (p->resetting || p->call) {
#endif
return 0;
} else {
return 1;
}
}
}
return 0;
}
/* If return 0, it means this function was able to handle it (pre setup digits). If non zero, the user of this
* functions should handle it normally (generate inband DTMF) */
int sig_pri_digit_begin(struct sig_pri_chan *pvt, struct ast_channel *ast, char digit)
{
if ((ast->_state == AST_STATE_DIALING) && !pvt->proceeding) {
if (pvt->setup_ack) {
if (!pri_grab(pvt, pvt->pri)) {
pri_information(pvt->pri->pri, pvt->call, digit);
pri_rel(pvt->pri);
} else {
ast_log(LOG_WARNING, "Unable to grab PRI on span %d\n", pvt->pri->span);
}
} else if (strlen(pvt->dialdest) < sizeof(pvt->dialdest) - 1) {
int res;
ast_debug(1, "Queueing digit '%c' since setup_ack not yet received\n", digit);
res = strlen(pvt->dialdest);
pvt->dialdest[res++] = digit;
pvt->dialdest[res] = '\0';
}
return 0;
}
return 1;
}
int sig_pri_start_pri(struct sig_pri_pri *pri)
{
int x;
int i;
ast_mutex_init(&pri->lock);
for (i = 0; i < NUM_DCHANS; i++) {
if (pri->fds[i] == -1) {
break;
}
switch (pri->sig) {
case SIG_BRI:
pri->dchans[i] = pri_new_bri(pri->fds[i], 1, pri->nodetype, pri->switchtype);
break;
case SIG_BRI_PTMP:
pri->dchans[i] = pri_new_bri(pri->fds[i], 0, pri->nodetype, pri->switchtype);
break;
default:
pri->dchans[i] = pri_new(pri->fds[i], pri->nodetype, pri->switchtype);
#ifdef HAVE_PRI_SERVICE_MESSAGES
if (pri->enable_service_message_support) {
pri_set_service_message_support(pri->dchans[i], 1);
}
#endif
}
/* Force overlap dial if we're doing GR-303! */
pri_set_overlapdial(pri->dchans[i], pri->overlapdial);
pri_set_inbanddisconnect(pri->dchans[i], pri->inbanddisconnect);
/* Enslave to master if appropriate */
if (i)
pri_enslave(pri->dchans[0], pri->dchans[i]);
if (!pri->dchans[i]) {
if (pri->fds[i] > 0)
close(pri->fds[i]);
pri->fds[i] = -1;
ast_log(LOG_ERROR, "Unable to create PRI structure\n");
return -1;
}
pri_set_debug(pri->dchans[i], 0);
pri_set_nsf(pri->dchans[i], pri->nsf);
#ifdef PRI_GETSET_TIMERS
for (x = 0; x < PRI_MAX_TIMERS; x++) {
if (pri->pritimers[x] != 0)
pri_set_timer(pri->dchans[i], x, pri->pritimers[x]);
}
#endif
}
/* Assume primary is the one we use */
pri->pri = pri->dchans[0];
pri->resetpos = -1;
if (ast_pthread_create_background(&pri->master, NULL, pri_dchannel, pri)) {
for (i = 0; i < NUM_DCHANS; i++) {
if (!pri->dchans[i])
break;
if (pri->fds[i] > 0)
close(pri->fds[i]);
pri->fds[i] = -1;
}
ast_log(LOG_ERROR, "Unable to spawn D-channel: %s\n", strerror(errno));
return -1;
}
return 0;
}
void sig_pri_chan_alarm_notify(struct sig_pri_chan *p, int noalarm)
{
if (!noalarm) {
p->inalarm = 1;
if (!p->pri || !p->pri->pri || (pri_get_timer(p->pri->pri, PRI_TIMER_T309) < 0)) {
/* T309 is not enabled : hangup calls when alarm occurs */
if (p->call) {
if (p->pri && p->pri->pri) {
if (!pri_grab(p, p->pri)) {
pri_hangup(p->pri->pri, p->call, -1);
pri_destroycall(p->pri->pri, p->call);
p->call = NULL;
pri_rel(p->pri);
} else
ast_log(LOG_WARNING, "Failed to grab PRI!\n");
} else
ast_log(LOG_WARNING, "Failed to grab PRI!\n");
} else
ast_log(LOG_WARNING, "The PRI Call has not been destroyed\n");
}
if (p->owner)
ast_softhangup_nolock(p->owner, AST_SOFTHANGUP_DEV);
} else {
p->inalarm = 0;
}
}
struct sig_pri_chan *sig_pri_chan_new(void *pvt_data, struct sig_pri_callback *callback, struct sig_pri_pri *pri, int logicalspan, int channo)
{
struct sig_pri_chan *p;
p = ast_calloc(1, sizeof(*p));
if (!p)
return p;
p->logicalspan = logicalspan;
p->prioffset = channo;
p->calls = callback;
p->chan_pvt = pvt_data;
pri->pvts[pri->numchans++] = p;
p->pri = pri;
return p;
}
static void build_status(char *s, size_t len, int status, int active)
{
if (!s || len < 1) {
return;
}
s[0] = '\0';
if (!(status & DCHAN_NOTINALARM))
strncat(s, "In Alarm, ", len - strlen(s) - 1);
if (status & DCHAN_UP)
strncat(s, "Up", len - strlen(s) - 1);
else
strncat(s, "Down", len - strlen(s) - 1);
if (active)
strncat(s, ", Active", len - strlen(s) - 1);
else
strncat(s, ", Standby", len - strlen(s) - 1);
s[len - 1] = '\0';
}
void sig_pri_cli_show_spans(int fd, int span, struct sig_pri_pri *pri)
{
char status[256];
int x;
for (x = 0; x < NUM_DCHANS; x++) {
if (pri->dchans[x]) {
build_status(status, sizeof(status), pri->dchanavail[x], pri->dchans[x] == pri->pri);
ast_cli(fd, "PRI span %d/%d: %s\n", span, x, status);
}
}
}
void sig_pri_cli_show_span(int fd, int *dchannels, struct sig_pri_pri *pri)
{
int x;
char status[256];
for (x = 0; x < NUM_DCHANS; x++) {
if (pri->dchans[x]) {
#ifdef PRI_DUMP_INFO_STR
char *info_str = NULL;
#endif
ast_cli(fd, "%s D-channel: %d\n", pri_order(x), dchannels[x]);
build_status(status, sizeof(status), pri->dchanavail[x], pri->dchans[x] == pri->pri);
ast_cli(fd, "Status: %s\n", status);
#ifdef PRI_DUMP_INFO_STR
info_str = pri_dump_info_str(pri->pri);
if (info_str) {
ast_cli(fd, "%s", info_str);
free(info_str);
}
#else
pri_dump_info(pri->pri);
#endif
ast_cli(fd, "Overlap Recv: %s\n\n", (pri->overlapdial & DAHDI_OVERLAPDIAL_INCOMING)?"Yes":"No");
ast_cli(fd, "\n");
}
}
}
int pri_send_keypad_facility_exec(struct sig_pri_chan *p, const char *digits)
{
sig_pri_lock_private(p);
if (!p->pri || !p->call) {
ast_debug(1, "Unable to find pri or call on channel!\n");
sig_pri_unlock_private(p);
return -1;
}
if (!pri_grab(p, p->pri)) {
pri_keypad_facility(p->pri->pri, p->call, digits);
pri_rel(p->pri);
} else {
ast_debug(1, "Unable to grab pri to send keypad facility!\n");
sig_pri_unlock_private(p);
return -1;
}
sig_pri_unlock_private(p);
return 0;
}
int pri_send_callrerouting_facility_exec(struct sig_pri_chan *p, enum ast_channel_state chanstate, const char *destination, const char *original, const char *reason)
{
int res = -1;
sig_pri_lock_private(p);
if (!p->pri || !p->call) {
ast_log(LOG_DEBUG, "Unable to find pri or call on channel!\n");
sig_pri_unlock_private(p);
return -1;
}
switch (p->pri->sig) {
case SIG_PRI:
if (!pri_grab(p, p->pri)) {
if (chanstate == AST_STATE_RING) {
res = pri_callrerouting_facility(p->pri->pri, p->call, destination, original, reason);
}
pri_rel(p->pri);
} else {
ast_log(LOG_DEBUG, "Unable to grab pri to send callrerouting facility on span %d!\n", p->pri->span);
sig_pri_unlock_private(p);
return -1;
}
break;
}
sig_pri_unlock_private(p);
return res;
}
int pri_maintenance_bservice(struct pri *pri, struct sig_pri_chan *p, int changestatus)
{
int channel = PVT_TO_CHANNEL(p);
int span = PRI_SPAN(channel);
return pri_maintenance_service(pri, span, channel, changestatus);
}
#endif /* HAVE_PRI */
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