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asterisk/res/res_features.c

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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Routines implementing call parking
*
* Copyright (C) 1999-2004, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#include <asterisk/lock.h>
#include <asterisk/file.h>
#include <asterisk/logger.h>
#include <asterisk/channel.h>
#include <asterisk/pbx.h>
#include <asterisk/options.h>
#include <asterisk/module.h>
#include <asterisk/translate.h>
#include <asterisk/say.h>
#include <asterisk/channel_pvt.h>
#include <asterisk/features.h>
#include <asterisk/musiconhold.h>
#include <asterisk/config.h>
#include <asterisk/cli.h>
#include <asterisk/manager.h>
#include <asterisk/utils.h>
#include <asterisk/adsi.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/time.h>
#include <sys/signal.h>
#include <netinet/in.h>
#ifdef __AST_DEBUG_MALLOC
static void FREE(void *ptr)
{
free(ptr);
}
#else
#define FREE free
#endif
#define DEFAULT_PARK_TIME 45000
#define DEFAULT_TRANSFER_DIGIT_TIMEOUT 3000
static char *parkedcall = "ParkedCall";
/* No more than 45 seconds parked before you do something with them */
static int parkingtime = DEFAULT_PARK_TIME;
/* Context for which parking is made accessible */
static char parking_con[AST_MAX_EXTENSION] = "parkedcalls";
/* Context for dialback for parking (KLUDGE) */
static char parking_con_dial[AST_MAX_EXTENSION] = "park-dial";
/* Extension you type to park the call */
static char parking_ext[AST_MAX_EXTENSION] = "700";
static char pickup_ext[AST_MAX_EXTENSION] = "*8";
/* First available extension for parking */
static int parking_start = 701;
/* Last available extension for parking */
static int parking_stop = 750;
static int adsipark = 0;
static int transferdigittimeout = DEFAULT_TRANSFER_DIGIT_TIMEOUT;
/* Default courtesy tone played when party joins conference */
static char courtesytone[256] = "";
/* Registrar for operations */
static char *registrar = "res_features";
static char *synopsis = "Answer a parked call";
static char *descrip = "ParkedCall(exten):"
"Used to connect to a parked call. This Application is always\n"
"registered internally and does not need to be explicitly added\n"
"into the dialplan, although you should include the 'parkedcalls'\n"
"context.\n";
static char *parkcall = "Park";
static char *synopsis2 = "Park yourself";
static char *descrip2 = "Park(exten):"
"Used to park yourself (typically in combination with a supervised\n"
"transfer to know the parking space. This Application is always\n"
"registered internally and does not need to be explicitly added\n"
"into the dialplan, although you should include the 'parkedcalls'\n"
"context.\n";
static struct ast_app *monitor_app=NULL;
static int monitor_ok=1;
struct parkeduser {
struct ast_channel *chan;
struct timeval start;
int parkingnum;
/* Where to go if our parking time expires */
char context[AST_MAX_EXTENSION];
char exten[AST_MAX_EXTENSION];
int priority;
int parkingtime;
int notquiteyet;
char peername[1024];
unsigned char moh_trys;
struct parkeduser *next;
};
static struct parkeduser *parkinglot;
AST_MUTEX_DEFINE_STATIC(parking_lock);
static pthread_t parking_thread;
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
char *ast_parking_ext(void)
{
return parking_ext;
}
char *ast_pickup_ext(void)
{
return pickup_ext;
}
static int adsi_announce_park(struct ast_channel *chan, int parkingnum)
{
int res;
int justify[5] = {ADSI_JUST_CENT, ADSI_JUST_CENT, ADSI_JUST_CENT, ADSI_JUST_CENT};
char tmp[256] = "";
char *message[5] = {NULL, NULL, NULL, NULL, NULL};
snprintf(tmp, sizeof(tmp), "Parked on %d", parkingnum);
message[0] = tmp;
res = adsi_load_session(chan, NULL, 0, 1);
if (res == -1) {
return res;
}
return adsi_print(chan, message, justify, 1);
}
int ast_park_call(struct ast_channel *chan, struct ast_channel *peer, int timeout, int *extout)
{
/* We put the user in the parking list, then wake up the parking thread to be sure it looks
after these channels too */
struct parkeduser *pu, *cur;
int x;
char exten[AST_MAX_EXTENSION];
struct ast_context *con;
pu = malloc(sizeof(struct parkeduser));
if (pu) {
memset(pu,0,sizeof(struct parkeduser));
ast_mutex_lock(&parking_lock);
for (x=parking_start;x<=parking_stop;x++) {
cur = parkinglot;
while(cur) {
if (cur->parkingnum == x)
break;
cur = cur->next;
}
if (!cur)
break;
}
if (x <= parking_stop) {
chan->appl = "Parked Call";
chan->data = NULL;
pu->chan = chan;
/* Start music on hold */
if (chan != peer)
ast_moh_start(pu->chan, NULL);
gettimeofday(&pu->start, NULL);
pu->parkingnum = x;
if (timeout > 0)
pu->parkingtime = timeout;
else
pu->parkingtime = parkingtime;
if (extout)
*extout = x;
if (peer)
strncpy(pu->peername, peer->name, sizeof(pu->peername) - 1);
/* Remember what had been dialed, so that if the parking
expires, we try to come back to the same place */
if (!ast_strlen_zero(chan->macrocontext))
strncpy(pu->context, chan->macrocontext, sizeof(pu->context)-1);
else
strncpy(pu->context, chan->context, sizeof(pu->context)-1);
if (!ast_strlen_zero(chan->macroexten))
strncpy(pu->exten, chan->macroexten, sizeof(pu->exten)-1);
else
strncpy(pu->exten, chan->exten, sizeof(pu->exten)-1);
if (chan->macropriority)
pu->priority = chan->macropriority;
else
pu->priority = chan->priority;
pu->next = parkinglot;
parkinglot = pu;
/* If parking a channel directly, don't quiet yet get parking running on it */
if (peer == chan)
pu->notquiteyet = 1;
ast_mutex_unlock(&parking_lock);
/* Wake up the (presumably select()ing) thread */
pthread_kill(parking_thread, SIGURG);
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "Parked %s on %d. Will timeout back to %s,%s,%d in %d seconds\n", pu->chan->name, pu->parkingnum, pu->context, pu->exten, pu->priority, (pu->parkingtime/1000));
manager_event(EVENT_FLAG_CALL, "ParkedCall",
"Exten: %d\r\n"
"Channel: %s\r\n"
"From: %s\r\n"
"Timeout: %ld\r\n"
"CallerID: %s\r\n"
,pu->parkingnum, pu->chan->name, peer->name
,(long)pu->start.tv_sec + (long)(pu->parkingtime/1000) - (long)time(NULL)
,(pu->chan->callerid ? pu->chan->callerid : "")
);
if (peer) {
if (adsipark && adsi_available(peer)) {
adsi_announce_park(peer, pu->parkingnum);
}
ast_say_digits(peer, pu->parkingnum, "", peer->language);
if (adsipark && adsi_available(peer)) {
adsi_unload_session(peer);
}
}
con = ast_context_find(parking_con);
if (!con) {
con = ast_context_create(NULL,parking_con, registrar);
if (!con) {
ast_log(LOG_ERROR, "Parking context '%s' does not exist and unable to create\n", parking_con);
}
}
if (con) {
snprintf(exten, sizeof(exten), "%d", x);
ast_add_extension2(con, 1, exten, 1, NULL, parkedcall, strdup(exten), FREE, registrar);
}
if (pu->notquiteyet) {
/* Wake up parking thread if we're really done */
ast_moh_start(pu->chan, NULL);
pu->notquiteyet = 0;
pthread_kill(parking_thread, SIGURG);
}
return 0;
} else {
ast_log(LOG_WARNING, "No more parking spaces\n");
free(pu);
ast_mutex_unlock(&parking_lock);
return -1;
}
} else {
ast_log(LOG_WARNING, "Out of memory\n");
return -1;
}
return 0;
}
int ast_masq_park_call(struct ast_channel *rchan, struct ast_channel *peer, int timeout, int *extout)
{
struct ast_channel *chan;
struct ast_frame *f;
/* Make a new, fake channel that we'll use to masquerade in the real one */
chan = ast_channel_alloc(0);
if (chan) {
/* Let us keep track of the channel name */
snprintf(chan->name, sizeof (chan->name), "Parked/%s",rchan->name);
/* Make formats okay */
chan->readformat = rchan->readformat;
chan->writeformat = rchan->writeformat;
ast_channel_masquerade(chan, rchan);
/* Setup the extensions and such */
strncpy(chan->context, rchan->context, sizeof(chan->context) - 1);
strncpy(chan->exten, rchan->exten, sizeof(chan->exten) - 1);
chan->priority = rchan->priority;
/* Make the masq execute */
f = ast_read(chan);
if (f)
ast_frfree(f);
ast_park_call(chan, peer, timeout, extout);
} else {
ast_log(LOG_WARNING, "Unable to create parked channel\n");
return -1;
}
return 0;
}
int ast_bridge_call(struct ast_channel *chan,struct ast_channel *peer,struct ast_bridge_config *config)
{
/* Copy voice back and forth between the two channels. Give the peer
the ability to transfer calls with '#<extension' syntax. */
int len;
struct ast_frame *f;
struct ast_channel *who;
char newext[256], *ptr;
int res;
int diff;
struct ast_option_header *aoh;
struct ast_channel *transferer;
struct ast_channel *transferee;
struct timeval start, end;
char *transferer_real_context;
int allowdisconnect_in,allowdisconnect_out,allowredirect_in,allowredirect_out;
char *monitor_exec;
if (chan && peer) {
pbx_builtin_setvar_helper(chan, "BRIDGEPEER", peer->name);
pbx_builtin_setvar_helper(peer, "BRIDGEPEER", chan->name);
} else if (chan)
pbx_builtin_setvar_helper(chan, "BLINDTRANSFER", NULL);
if (monitor_ok) {
if (!monitor_app) {
if (!(monitor_app = pbx_findapp("Monitor")))
monitor_ok=0;
}
if ((monitor_exec = pbx_builtin_getvar_helper(chan, "AUTO_MONITOR")))
pbx_exec(chan, monitor_app, monitor_exec, 1);
else if ((monitor_exec = pbx_builtin_getvar_helper(peer, "AUTO_MONITOR")))
pbx_exec(peer, monitor_app, monitor_exec, 1);
}
allowdisconnect_in = config->allowdisconnect_in;
allowdisconnect_out = config->allowdisconnect_out;
allowredirect_in = config->allowredirect_in;
allowredirect_out = config->allowredirect_out;
config->firstpass = 1;
/* Answer if need be */
if (ast_answer(chan))
return -1;
peer->appl = "Bridged Call";
peer->data = chan->name;
/* copy the userfield from the B-leg to A-leg if applicable */
if (chan->cdr && peer->cdr && !ast_strlen_zero(peer->cdr->userfield)) {
char tmp[256];
if (!ast_strlen_zero(chan->cdr->userfield)) {
snprintf(tmp, sizeof(tmp), "%s;%s",chan->cdr->userfield, peer->cdr->userfield);
ast_cdr_appenduserfield(chan, tmp);
} else
ast_cdr_setuserfield(chan, peer->cdr->userfield);
/* free the peer's cdr without ast_cdr_free complaining */
free(peer->cdr);
peer->cdr = NULL;
}
for (;;) {
if (config->timelimit)
gettimeofday(&start, NULL);
res = ast_channel_bridge(chan,peer,config,&f, &who);
if (config->timelimit) {
/* Update time limit for next pass */
gettimeofday(&end, NULL);
diff = (end.tv_sec - start.tv_sec) * 1000;
diff += (end.tv_usec - start.tv_usec) / 1000;
config->timelimit -= diff;
if (config->timelimit <=0) {
/* We ran out of time */
config->timelimit = 0;
who = chan;
f = NULL;
res = 0;
}
}
if (res < 0) {
ast_log(LOG_WARNING, "Bridge failed on channels %s and %s\n", chan->name, peer->name);
return -1;
}
if (!f || ((f->frametype == AST_FRAME_CONTROL) && ((f->subclass == AST_CONTROL_HANGUP) || (f->subclass == AST_CONTROL_BUSY) ||
(f->subclass == AST_CONTROL_CONGESTION)))) {
res = -1;
break;
}
if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RINGING)) {
if (who == chan)
ast_indicate(peer, AST_CONTROL_RINGING);
else
ast_indicate(chan, AST_CONTROL_RINGING);
}
if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == -1)) {
if (who == chan)
ast_indicate(peer, -1);
else
ast_indicate(chan, -1);
}
if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_OPTION)) {
aoh = f->data;
/* Forward option Requests */
if (aoh && (aoh->flag == AST_OPTION_FLAG_REQUEST)) {
if (who == chan)
ast_channel_setoption(peer, ntohs(aoh->option), aoh->data, f->datalen - sizeof(struct ast_option_header), 0);
else
ast_channel_setoption(chan, ntohs(aoh->option), aoh->data, f->datalen - sizeof(struct ast_option_header), 0);
}
}
/* check for '*', if we find it it's time to disconnect */
if (f && (f->frametype == AST_FRAME_DTMF) &&
(((who == chan) && allowdisconnect_out) || ((who == peer) && allowdisconnect_in)) &&
(f->subclass == '*')) {
if (option_verbose > 3)
ast_verbose(VERBOSE_PREFIX_3 "User hit %c to disconnect call.\n", f->subclass);
res = -1;
break;
}
if ((f->frametype == AST_FRAME_DTMF) &&
((allowredirect_in && who == peer) || (allowredirect_out && who == chan)) &&
(f->subclass == '#')) {
if (allowredirect_in && who == peer) {
transferer = peer;
transferee = chan;
} else {
transferer = chan;
transferee = peer;
}
if (!(transferer_real_context=pbx_builtin_getvar_helper(transferee, "TRANSFER_CONTEXT")) &&
!(transferer_real_context=pbx_builtin_getvar_helper(transferer, "TRANSFER_CONTEXT"))) {
/* Use the non-macro context to transfer the call */
if (!ast_strlen_zero(transferer->macrocontext))
transferer_real_context = transferer->macrocontext;
else
transferer_real_context = transferer->context;
}
/* Start autoservice on chan while we talk
to the originator */
ast_autoservice_start(transferee);
ast_moh_start(transferee, NULL);
memset(newext, 0, sizeof(newext));
ptr = newext;
/* Transfer */
if ((res=ast_streamfile(transferer, "pbx-transfer", transferer->language))) {
ast_moh_stop(transferee);
ast_autoservice_stop(transferee);
break;
}
if ((res=ast_waitstream(transferer, AST_DIGIT_ANY)) < 0) {
ast_moh_stop(transferee);
ast_autoservice_stop(transferee);
break;
}
ast_stopstream(transferer);
if (res > 0) {
/* If they've typed a digit already, handle it */
newext[0] = res;
ptr++;
len --;
}
res = 0;
while (strlen(newext) < sizeof(newext) - 1) {
res = ast_waitfordigit(transferer, transferdigittimeout);
if (res < 1)
break;
if (res == '#')
break;
*(ptr++) = res;
if (!ast_matchmore_extension(transferer, transferer_real_context
, newext, 1, transferer->callerid)) {
break;
}
}
if (res < 0) {
ast_moh_stop(transferee);
ast_autoservice_stop(transferee);
break;
}
if (!strcmp(newext, ast_parking_ext())) {
ast_moh_stop(transferee);
if (ast_autoservice_stop(transferee))
res = -1;
else if (!ast_park_call(transferee, transferer, 0, NULL)) {
/* We return non-zero, but tell the PBX not to hang the channel when
the thread dies -- We have to be careful now though. We are responsible for
hanging up the channel, else it will never be hung up! */
if (transferer==peer)
res=AST_PBX_KEEPALIVE;
else
res=AST_PBX_NO_HANGUP_PEER;
break;
} else {
ast_log(LOG_WARNING, "Unable to park call %s\n", transferee->name);
}
/* XXX Maybe we should have another message here instead of invalid extension XXX */
} else if (ast_exists_extension(transferee, transferer_real_context, newext, 1, transferer->callerid)) {
pbx_builtin_setvar_helper(peer, "BLINDTRANSFER", chan->name);
pbx_builtin_setvar_helper(chan, "BLINDTRANSFER", peer->name);
ast_moh_stop(transferee);
res=ast_autoservice_stop(transferee);
if (!transferee->pbx) {
/* Doh! Use our handy async_goto funcitons */
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Transferring %s to '%s' (context %s) priority 1\n"
,transferee->name, newext, transferer_real_context);
if (ast_async_goto(transferee, transferer_real_context, newext, 1))
ast_log(LOG_WARNING, "Async goto fialed :(\n");
res = -1;
} else {
/* Set the channel's new extension, since it exists, using transferer context */
strncpy(transferee->exten, newext, sizeof(transferee->exten)-1);
strncpy(transferee->context, transferer_real_context, sizeof(transferee->context)-1);
transferee->priority = 0;
ast_frfree(f);
}
break;
} else {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Unable to find extension '%s' in context '%s'\n", newext, transferer_real_context);
}
res = ast_streamfile(transferer, "pbx-invalid", transferee->language);
if (res) {
ast_moh_stop(transferee);
ast_autoservice_stop(transferee);
break;
}
res = ast_waitstream(transferer, AST_DIGIT_ANY);
ast_stopstream(transferer);
ast_moh_stop(transferee);
res = ast_autoservice_stop(transferee);
if (res) {
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "Hungup during autoservice stop on '%s'\n", transferee->name);
}
} else {
if (f && (f->frametype == AST_FRAME_DTMF)) {
if (who == peer)
ast_write(chan, f);
else
ast_write(peer, f);
}
#if 1
ast_log(LOG_DEBUG, "Read from %s (%d,%d)\n", who->name, f->frametype, f->subclass);
#endif
}
if (f)
ast_frfree(f);
}
return res;
}
static void *do_parking_thread(void *ignore)
{
int ms, tms, max;
struct parkeduser *pu, *pl, *pt = NULL;
struct timeval tv;
struct ast_frame *f;
char exten[AST_MAX_EXTENSION];
char *peername,*cp;
char returnexten[AST_MAX_EXTENSION];
struct ast_context *con;
int x;
fd_set rfds, efds;
fd_set nrfds, nefds;
FD_ZERO(&rfds);
FD_ZERO(&efds);
for (;;) {
ms = -1;
max = -1;
ast_mutex_lock(&parking_lock);
pl = NULL;
pu = parkinglot;
FD_ZERO(&nrfds);
FD_ZERO(&nefds);
while(pu) {
if (pu->notquiteyet) {
/* Pretend this one isn't here yet */
pl = pu;
pu = pu->next;
continue;
}
gettimeofday(&tv, NULL);
tms = (tv.tv_sec - pu->start.tv_sec) * 1000 + (tv.tv_usec - pu->start.tv_usec) / 1000;
if (tms > pu->parkingtime) {
/* Stop music on hold */
ast_moh_stop(pu->chan);
/* Get chan, exten from derived kludge */
if (pu->peername[0]) {
peername = ast_strdupa(pu->peername);
cp = strrchr(peername, '-');
if (cp)
*cp = 0;
con = ast_context_find(parking_con_dial);
if (!con) {
con = ast_context_create(NULL, parking_con_dial, registrar);
if (!con) {
ast_log(LOG_ERROR, "Parking dial context '%s' does not exist and unable to create\n", parking_con_dial);
}
}
if (con) {
snprintf(returnexten, sizeof(returnexten), "%s||t", peername);
ast_add_extension2(con, 1, peername, 1, NULL, "Dial", strdup(returnexten), free, registrar);
}
strncpy(pu->chan->exten, peername, sizeof(pu->chan->exten) - 1);
strncpy(pu->chan->context, parking_con_dial, sizeof(pu->chan->context) - 1);
pu->chan->priority = 1;
} else {
/* They've been waiting too long, send them back to where they came. Theoretically they
should have their original extensions and such, but we copy to be on the safe side */
strncpy(pu->chan->exten, pu->exten, sizeof(pu->chan->exten)-1);
strncpy(pu->chan->context, pu->context, sizeof(pu->chan->context)-1);
pu->chan->priority = pu->priority;
}
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "Timeout for %s parked on %d. Returning to %s,%s,%d\n", pu->chan->name, pu->parkingnum, pu->chan->context, pu->chan->exten, pu->chan->priority);
/* Start up the PBX, or hang them up */
if (ast_pbx_start(pu->chan)) {
ast_log(LOG_WARNING, "Unable to restart the PBX for user on '%s', hanging them up...\n", pu->chan->name);
ast_hangup(pu->chan);
}
/* And take them out of the parking lot */
if (pl)
pl->next = pu->next;
else
parkinglot = pu->next;
pt = pu;
pu = pu->next;
con = ast_context_find(parking_con);
if (con) {
snprintf(exten, sizeof(exten), "%d", pt->parkingnum);
if (ast_context_remove_extension2(con, exten, 1, NULL))
ast_log(LOG_WARNING, "Whoa, failed to remove the extension!\n");
} else
ast_log(LOG_WARNING, "Whoa, no parking context?\n");
free(pt);
} else {
for (x=0; x<AST_MAX_FDS; x++) {
if ((pu->chan->fds[x] > -1) && (FD_ISSET(pu->chan->fds[x], &rfds) || FD_ISSET(pu->chan->fds[x], &efds))) {
if (FD_ISSET(pu->chan->fds[x], &efds))
pu->chan->exception = 1;
else
pu->chan->exception = 0;
pu->chan->fdno = x;
/* See if they need servicing */
f = ast_read(pu->chan);
if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_HANGUP))) {
/* There's a problem, hang them up*/
if (option_verbose > 1)
ast_verbose(VERBOSE_PREFIX_2 "%s got tired of being parked\n", pu->chan->name);
ast_hangup(pu->chan);
/* And take them out of the parking lot */
if (pl)
pl->next = pu->next;
else
parkinglot = pu->next;
pt = pu;
pu = pu->next;
con = ast_context_find(parking_con);
if (con) {
snprintf(exten, sizeof(exten), "%d", pt->parkingnum);
if (ast_context_remove_extension2(con, exten, 1, NULL))
ast_log(LOG_WARNING, "Whoa, failed to remove the extension!\n");
} else
ast_log(LOG_WARNING, "Whoa, no parking context?\n");
free(pt);
break;
} else {
/* XXX Maybe we could do something with packets, like dial "0" for operator or something XXX */
ast_frfree(f);
if (pu->moh_trys < 3 && !pu->chan->generatordata) {
ast_log(LOG_DEBUG, "MOH on parked call stopped by outside source. Restarting.\n");
ast_moh_start(pu->chan, NULL);
pu->moh_trys++;
}
goto std; /* XXX Ick: jumping into an else statement??? XXX */
}
}
}
if (x >= AST_MAX_FDS) {
std: for (x=0; x<AST_MAX_FDS; x++) {
/* Keep this one for next one */
if (pu->chan->fds[x] > -1) {
FD_SET(pu->chan->fds[x], &nrfds);
FD_SET(pu->chan->fds[x], &nefds);
if (pu->chan->fds[x] > max)
max = pu->chan->fds[x];
}
}
/* Keep track of our longest wait */
if ((tms < ms) || (ms < 0))
ms = tms;
pl = pu;
pu = pu->next;
}
}
}
ast_mutex_unlock(&parking_lock);
rfds = nrfds;
efds = nefds;
tv.tv_sec = ms / 1000;
tv.tv_usec = (ms % 1000) * 1000;
/* Wait for something to happen */
ast_select(max + 1, &rfds, NULL, &efds, (ms > -1) ? &tv : NULL);
pthread_testcancel();
}
return NULL; /* Never reached */
}
static int park_call_exec(struct ast_channel *chan, void *data)
{
/* Data is unused at the moment but could contain a parking
lot context eventually */
int res=0;
struct localuser *u;
LOCAL_USER_ADD(u);
/* Setup the exten/priority to be s/1 since we don't know
where this call should return */
strcpy(chan->exten, "s");
chan->priority = 1;
if (chan->_state != AST_STATE_UP)
res = ast_answer(chan);
if (!res)
res = ast_safe_sleep(chan, 1000);
if (!res)
res = ast_park_call(chan, chan, 0, NULL);
LOCAL_USER_REMOVE(u);
if (!res)
res = AST_PBX_KEEPALIVE;
return res;
}
static int park_exec(struct ast_channel *chan, void *data)
{
int res=0;
struct localuser *u;
struct ast_channel *peer=NULL;
struct parkeduser *pu, *pl=NULL;
char exten[AST_MAX_EXTENSION];
struct ast_context *con;
int park;
int dres;
struct ast_bridge_config config;
if (!data) {
ast_log(LOG_WARNING, "Park requires an argument (extension number)\n");
return -1;
}
LOCAL_USER_ADD(u);
park = atoi((char *)data);
ast_mutex_lock(&parking_lock);
pu = parkinglot;
while(pu) {
if (pu->parkingnum == park) {
if (pl)
pl->next = pu->next;
else
parkinglot = pu->next;
break;
}
pl = pu;
pu = pu->next;
}
ast_mutex_unlock(&parking_lock);
if (pu) {
peer = pu->chan;
con = ast_context_find(parking_con);
if (con) {
snprintf(exten, sizeof(exten), "%d", pu->parkingnum);
if (ast_context_remove_extension2(con, exten, 1, NULL))
ast_log(LOG_WARNING, "Whoa, failed to remove the extension!\n");
} else
ast_log(LOG_WARNING, "Whoa, no parking context?\n");
free(pu);
}
/* JK02: it helps to answer the channel if not already up */
if (chan->_state != AST_STATE_UP) {
ast_answer(chan);
}
if (peer) {
/* Play a courtesy beep in the calling channel to prefix the bridge connecting */
if (!ast_strlen_zero(courtesytone)) {
if (!ast_streamfile(chan, courtesytone, chan->language)) {
if (ast_waitstream(chan, "") < 0) {
ast_log(LOG_WARNING, "Failed to play courtesy tone!\n");
ast_hangup(peer);
return -1;
}
}
}
ast_moh_stop(peer);
res = ast_channel_make_compatible(chan, peer);
if (res < 0) {
ast_log(LOG_WARNING, "Could not make channels %s and %s compatible for bridge\n", chan->name, peer->name);
ast_hangup(peer);
return -1;
}
/* This runs sorta backwards, since we give the incoming channel control, as if it
were the person called. */
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Channel %s connected to parked call %d\n", chan->name, park);
memset(&config,0,sizeof(struct ast_bridge_config));
config.allowredirect_in = 1;
config.allowredirect_out = 1;
config.allowdisconnect_out = 0;
config.allowdisconnect_in = 0;
config.timelimit = 0;
config.play_warning = 0;
config.warning_freq = 0;
config.warning_sound=NULL;
res = ast_bridge_call(chan,peer,&config);
/* Simulate the PBX hanging up */
if (res != AST_PBX_NO_HANGUP_PEER)
ast_hangup(peer);
return res;
} else {
/* XXX Play a message XXX */
dres = ast_streamfile(chan, "pbx-invalidpark", chan->language);
if (!dres)
dres = ast_waitstream(chan, "");
else {
ast_log(LOG_WARNING, "ast_streamfile of %s failed on %s\n", "pbx-invalidpark", chan->name);
dres = 0;
}
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Channel %s tried to talk to nonexistent parked call %d\n", chan->name, park);
res = -1;
}
LOCAL_USER_REMOVE(u);
return res;
}
static int handle_parkedcalls(int fd, int argc, char *argv[])
{
struct parkeduser *cur;
ast_cli(fd, "%4s %25s (%-15s %-12s %-4s) %-6s \n", "Num", "Channel"
, "Context", "Extension", "Pri", "Timeout");
ast_mutex_lock(&parking_lock);
cur=parkinglot;
while(cur) {
ast_cli(fd, "%4d %25s (%-15s %-12s %-4d) %6lds\n"
,cur->parkingnum, cur->chan->name, cur->context, cur->exten
,cur->priority, cur->start.tv_sec + (cur->parkingtime/1000) - time(NULL));
cur = cur->next;
}
ast_mutex_unlock(&parking_lock);
return RESULT_SUCCESS;
}
static char showparked_help[] =
"Usage: show parkedcalls\n"
" Lists currently parked calls.\n";
static struct ast_cli_entry showparked =
{ { "show", "parkedcalls", NULL }, handle_parkedcalls, "Lists parked calls", showparked_help };
/* Dump lot status */
static int manager_parking_status( struct mansession *s, struct message *m )
{
struct parkeduser *cur;
char *id = astman_get_header(m,"ActionID");
char idText[256] = "";
if (id && !ast_strlen_zero(id))
snprintf(idText,256,"ActionID: %s\r\n",id);
astman_send_ack(s, m, "Parked calls will follow");
ast_mutex_lock(&parking_lock);
cur=parkinglot;
while(cur) {
ast_mutex_lock(&s->lock);
ast_cli(s->fd, "Event: ParkedCall\r\n"
"Exten: %d\r\n"
"Channel: %s\r\n"
"Timeout: %ld\r\n"
"CallerID: %s\r\n"
"%s"
"\r\n"
,cur->parkingnum, cur->chan->name
,(long)cur->start.tv_sec + (long)(cur->parkingtime/1000) - (long)time(NULL)
,(cur->chan->callerid ? cur->chan->callerid : "")
,idText);
ast_mutex_unlock(&s->lock);
cur = cur->next;
}
ast_cli(s->fd,
"Event: ParkedCallsComplete\r\n"
"%s"
"\r\n",idText);
ast_mutex_unlock(&parking_lock);
return RESULT_SUCCESS;
}
int load_module(void)
{
int res;
int start, end;
struct ast_context *con;
struct ast_config *cfg;
struct ast_variable *var;
ast_cli_register(&showparked);
cfg = ast_load("features.conf");
if (!cfg) {
cfg = ast_load("parking.conf");
if (cfg)
ast_log(LOG_NOTICE, "parking.conf is deprecated in favor of 'features.conf'. Please rename it.\n");
}
if (cfg) {
var = ast_variable_browse(cfg, "general");
while(var) {
if (!strcasecmp(var->name, "parkext")) {
strncpy(parking_ext, var->value, sizeof(parking_ext) - 1);
} else if (!strcasecmp(var->name, "context")) {
strncpy(parking_con, var->value, sizeof(parking_con) - 1);
} else if (!strcasecmp(var->name, "parkingtime")) {
if ((sscanf(var->value, "%d", &parkingtime) != 1) || (parkingtime < 1)) {
ast_log(LOG_WARNING, "%s is not a valid parkingtime\n", var->value);
parkingtime = DEFAULT_PARK_TIME;
} else
parkingtime = parkingtime * 1000;
} else if (!strcasecmp(var->name, "parkpos")) {
if (sscanf(var->value, "%i-%i", &start, &end) != 2) {
ast_log(LOG_WARNING, "Format for parking positions is a-b, where a and b are numbers at line %d of parking.conf\n", var->lineno);
} else {
parking_start = start;
parking_stop = end;
}
} else if (!strcasecmp(var->name, "adsipark")) {
adsipark = ast_true(var->value);
} else if (!strcasecmp(var->name, "transferdigittimeout")) {
if ((sscanf(var->value, "%d", &transferdigittimeout) != 1) || (transferdigittimeout < 1)) {
ast_log(LOG_WARNING, "%s is not a valid transferdigittimeout\n", var->value);
transferdigittimeout = DEFAULT_TRANSFER_DIGIT_TIMEOUT;
} else
transferdigittimeout = transferdigittimeout * 1000;
} else if (!strcasecmp(var->name, "courtesytone")) {
strncpy(courtesytone, var->value, sizeof(courtesytone) - 1);
} else if (!strcasecmp(var->name, "pickupexten")) {
strncpy(pickup_ext, var->value, sizeof(pickup_ext) - 1);
}
var = var->next;
}
ast_destroy(cfg);
}
con = ast_context_find(parking_con);
if (!con) {
con = ast_context_create(NULL,parking_con, registrar);
if (!con) {
ast_log(LOG_ERROR, "Parking context '%s' does not exist and unable to create\n", parking_con);
return -1;
}
}
ast_add_extension2(con, 1, ast_parking_ext(), 1, NULL, parkcall, strdup(""), FREE, registrar);
ast_pthread_create(&parking_thread, NULL, do_parking_thread, NULL);
res = ast_register_application(parkedcall, park_exec, synopsis, descrip);
if (!res)
res = ast_register_application(parkcall, park_call_exec, synopsis2, descrip2);
if (!res) {
ast_manager_register( "ParkedCalls", 0, manager_parking_status, "List parked calls" );
}
return res;
}
int ast_pickup_call(struct ast_channel *chan)
{
struct ast_channel *cur;
int res = -1;
cur = ast_channel_walk_locked(NULL);
while(cur) {
if (!cur->pbx &&
(cur != chan) &&
(chan->pickupgroup & cur->callgroup) &&
((cur->_state == AST_STATE_RINGING) ||
(cur->_state == AST_STATE_RING))) {
break;
}
ast_mutex_unlock(&cur->lock);
cur = ast_channel_walk_locked(cur);
}
if (cur) {
ast_log(LOG_DEBUG, "Call pickup on chan '%s' by '%s'\n",cur->name, chan->name);
res = ast_answer(chan);
if (res)
ast_log(LOG_WARNING, "Unable to answer '%s'\n", chan->name);
res = ast_queue_control(chan, AST_CONTROL_ANSWER);
if (res)
ast_log(LOG_WARNING, "Unable to queue answer on '%s'\n", chan->name);
res = ast_channel_masquerade(cur, chan);
if (res)
ast_log(LOG_WARNING, "Unable to masquerade '%s' into '%s'\n", chan->name, cur->name); /* Done */
ast_mutex_unlock(&cur->lock);
} else {
ast_log(LOG_DEBUG, "No call pickup possible...\n");
}
return res;
}
int unload_module(void)
{
STANDARD_HANGUP_LOCALUSERS;
ast_manager_unregister( "ParkedCalls" );
ast_cli_unregister(&showparked);
ast_unregister_application(parkcall);
return ast_unregister_application(parkedcall);
}
char *description(void)
{
return "Call Parking Resource";
}
int usecount(void)
{
/* Never allow parking to be unloaded because it will
unresolve needed symbols in the dialer */
#if 0
int res;
STANDARD_USECOUNT(res);
return res;
#else
return 1;
#endif
}
char *key()
{
return ASTERISK_GPL_KEY;
}
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