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asterisk
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Refactor hold handling a bit so that it does not require keeping the call up

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when a call is put on hold.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@58474 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.4
Russell Bryant 18 years ago
parent 2b3c0dc1e4
commit ed9b9c6791
1 changed files with 41 additions and 38 deletions
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79
apps/app_meetme.c
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@ -65,6 +65,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/astobj.h"
#include "asterisk/devicestate.h"
#include "asterisk/dial.h"
#include "asterisk/causes.h"
#include "enter.h"
#include "leave.h"
@ -366,6 +367,7 @@ enum sla_trunk_state {
SLA_TRUNK_STATE_RINGING,
SLA_TRUNK_STATE_UP,
SLA_TRUNK_STATE_ONHOLD,
SLA_TRUNK_STATE_ONHOLD_BYME,
};
enum sla_hold_access {
@ -454,8 +456,6 @@ static const char sla_registrar[] = "SLA";
enum sla_event_type {
/*! A station has put the call on hold */
SLA_EVENT_HOLD,
/*! A station has taken the call off of hold */
SLA_EVENT_UNHOLD,
/*! The state of a dial has changed */
SLA_EVENT_DIAL_STATE,
/*! The state of a ringing trunk has changed */
@ -1065,6 +1065,7 @@ static const char *trunkstate2str(enum sla_trunk_state state)
S(SLA_TRUNK_STATE_RINGING)
S(SLA_TRUNK_STATE_UP)
S(SLA_TRUNK_STATE_ONHOLD)
S(SLA_TRUNK_STATE_ONHOLD_BYME)
}
return "Uknown State";
#undef S
@ -1273,7 +1274,7 @@ static void sla_queue_event(enum sla_event_type type)
}
/*! \brief Queue a SLA event from the conference */
static void sla_queue_event_conf(enum sla_event_type type, const struct ast_channel *chan,
static void sla_queue_event_conf(enum sla_event_type type, struct ast_channel *chan,
struct ast_conference *conf)
{
struct sla_station *station;
@ -1303,6 +1304,9 @@ static void sla_queue_event_conf(enum sla_event_type type, const struct ast_chan
return;
}
ast_softhangup(chan, AST_CAUSE_NORMAL);
trunk_ref->chan = NULL;
sla_queue_event_full(type, trunk_ref, station, 1);
}
@ -2094,8 +2098,6 @@ static int conf_run(struct ast_channel *chan, struct ast_conference *conf, int c
case AST_CONTROL_HOLD:
sla_queue_event_conf(SLA_EVENT_HOLD, chan, conf);
break;
case AST_CONTROL_UNHOLD:
sla_queue_event_conf(SLA_EVENT_UNHOLD, chan, conf);
default:
break;
}
@ -3094,7 +3096,8 @@ static struct sla_station *sla_find_station(const char *name)
return station;
}
static int sla_check_station_hold_access(const struct sla_trunk *trunk)
static int sla_check_station_hold_access(const struct sla_trunk *trunk,
const struct sla_station *station)
{
struct sla_station_ref *station_ref;
struct sla_trunk_ref *trunk_ref;
@ -3102,9 +3105,9 @@ static int sla_check_station_hold_access(const struct sla_trunk *trunk)
/* For each station that has this call on hold, check for private hold. */
AST_LIST_TRAVERSE(&trunk->stations, station_ref, entry) {
AST_LIST_TRAVERSE(&station_ref->station->trunks, trunk_ref, entry) {
if (trunk_ref->trunk != trunk)
if (trunk_ref->trunk != trunk || station_ref->station == station)
continue;
if (trunk_ref->state == SLA_TRUNK_STATE_ONHOLD && trunk_ref->chan &&
if (trunk_ref->state == SLA_TRUNK_STATE_ONHOLD_BYME &&
station_ref->station->hold_access == SLA_HOLD_PRIVATE)
return 1;
return 0;
@ -3133,8 +3136,9 @@ static struct sla_trunk_ref *sla_find_trunk_ref_byname(const struct sla_station
if ( (trunk_ref->trunk->barge_disabled
&& trunk_ref->state != SLA_TRUNK_STATE_IDLE) ||
(trunk_ref->trunk->hold_stations
&& trunk_ref->trunk->hold_access == SLA_HOLD_PRIVATE) ||
sla_check_station_hold_access(trunk_ref->trunk) )
&& trunk_ref->trunk->hold_access == SLA_HOLD_PRIVATE
&& trunk_ref->state != SLA_TRUNK_STATE_ONHOLD_BYME) ||
sla_check_station_hold_access(trunk_ref->trunk, station) )
trunk_ref = NULL;
break;
@ -3169,14 +3173,15 @@ static struct sla_ringing_station *sla_create_ringing_station(struct sla_station
}
static void sla_change_trunk_state(const struct sla_trunk *trunk, enum sla_trunk_state state,
enum sla_which_trunk_refs inactive_only)
enum sla_which_trunk_refs inactive_only, const struct sla_trunk_ref *exclude)
{
struct sla_station *station;
struct sla_trunk_ref *trunk_ref;
AST_LIST_TRAVERSE(&sla_stations, station, entry) {
AST_LIST_TRAVERSE(&station->trunks, trunk_ref, entry) {
if (trunk_ref->trunk != trunk || (inactive_only ? trunk_ref->chan : 0))
if (trunk_ref->trunk != trunk || (inactive_only ? trunk_ref->chan : 0)
|| trunk_ref == exclude)
continue;
trunk_ref->state = state;
ast_device_state_changed("SLA:%s_%s", station->name, trunk->name);
@ -3222,10 +3227,11 @@ static void *run_station(void *data)
conf = NULL;
}
trunk_ref->chan = NULL;
if (ast_atomic_dec_and_test((int *) &trunk_ref->trunk->active_stations)) {
if (ast_atomic_dec_and_test((int *) &trunk_ref->trunk->active_stations) &&
!trunk_ref->trunk->hold_stations) {
strncat(conf_name, "|K", sizeof(conf_name) - strlen(conf_name) - 1);
admin_exec(NULL, conf_name);
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS);
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS, NULL);
}
ast_dial_join(station->dial);
@ -3242,7 +3248,7 @@ static void sla_stop_ringing_trunk(struct sla_ringing_trunk *ringing_trunk)
snprintf(buf, sizeof(buf), "SLA_%s|K", ringing_trunk->trunk->name);
admin_exec(NULL, buf);
sla_change_trunk_state(ringing_trunk->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS);
sla_change_trunk_state(ringing_trunk->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS, NULL);
while ((station_ref = AST_LIST_REMOVE_HEAD(&ringing_trunk->timed_out_stations, entry)))
free(station_ref);
@ -3386,7 +3392,7 @@ static void sla_handle_dial_state_event(void)
s_trunk_ref->chan = ast_dial_answered(ringing_station->station->dial);
/* Actually answer the trunk */
ast_answer(ringing_trunk->trunk->chan);
sla_change_trunk_state(ringing_trunk->trunk, SLA_TRUNK_STATE_UP, ALL_TRUNK_REFS);
sla_change_trunk_state(ringing_trunk->trunk, SLA_TRUNK_STATE_UP, ALL_TRUNK_REFS, NULL);
/* Now, start a thread that will connect this station to the trunk. The rest of
* the code here sets up the thread and ensures that it is able to save the arguments
* before they are no longer valid since they are allocated on the stack. */
@ -3653,21 +3659,11 @@ static void sla_handle_ringing_trunk_event(void)
static void sla_handle_hold_event(struct sla_event *event)
{
ast_atomic_fetchadd_int((int *) &event->trunk_ref->trunk->hold_stations, 1);
event->trunk_ref->state = SLA_TRUNK_STATE_ONHOLD;
event->trunk_ref->state = SLA_TRUNK_STATE_ONHOLD_BYME;
ast_device_state_changed("SLA:%s_%s",
event->station->name, event->trunk_ref->trunk->name);
sla_change_trunk_state(event->trunk_ref->trunk, SLA_TRUNK_STATE_ONHOLD, INACTIVE_TRUNK_REFS);
}
static void sla_handle_unhold_event(struct sla_event *event)
{
if (ast_atomic_dec_and_test((int *) &event->trunk_ref->trunk->hold_stations) == 1)
sla_change_trunk_state(event->trunk_ref->trunk, SLA_TRUNK_STATE_UP, ALL_TRUNK_REFS);
else {
event->trunk_ref->state = SLA_TRUNK_STATE_UP;
ast_device_state_changed("SLA:%s_%s",
event->station->name, event->trunk_ref->trunk->name);
}
sla_change_trunk_state(event->trunk_ref->trunk, SLA_TRUNK_STATE_ONHOLD,
INACTIVE_TRUNK_REFS, event->trunk_ref);
}
/*! \brief Process trunk ring timeouts
@ -3892,9 +3888,6 @@ static void *sla_thread(void *data)
case SLA_EVENT_HOLD:
sla_handle_hold_event(event);
break;
case SLA_EVENT_UNHOLD:
sla_handle_unhold_event(event);
break;
case SLA_EVENT_DIAL_STATE:
sla_handle_dial_state_event();
break;
@ -4066,9 +4059,9 @@ static int sla_station_exec(struct ast_channel *chan, void *data)
}
AST_RWLIST_RDLOCK(&sla_trunks);
if (!ast_strlen_zero(trunk_name))
if (!ast_strlen_zero(trunk_name)) {
trunk_ref = sla_find_trunk_ref_byname(station, trunk_name);
else
} else
trunk_ref = sla_choose_idle_trunk(station);
AST_RWLIST_UNLOCK(&sla_trunks);
@ -4083,6 +4076,15 @@ static int sla_station_exec(struct ast_channel *chan, void *data)
return 0;
}
if (trunk_ref->state == SLA_TRUNK_STATE_ONHOLD_BYME) {
if (ast_atomic_dec_and_test((int *) &trunk_ref->trunk->hold_stations) == 1)
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_UP, ALL_TRUNK_REFS, NULL);
else {
trunk_ref->state = SLA_TRUNK_STATE_UP;
ast_device_state_changed("SLA:%s_%s", station->name, trunk_ref->trunk->name);
}
}
trunk_ref->chan = chan;
if (!trunk_ref->trunk->chan) {
@ -4096,7 +4098,7 @@ static int sla_station_exec(struct ast_channel *chan, void *data)
.cond_lock = &cond_lock,
.cond = &cond,
};
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_UP, ALL_TRUNK_REFS);
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_UP, ALL_TRUNK_REFS, NULL);
/* Create a thread to dial the trunk and dump it into the conference.
* However, we want to wait until the trunk has been dialed and the
* conference is created before continuing on here. */
@ -4116,7 +4118,7 @@ static int sla_station_exec(struct ast_channel *chan, void *data)
if (!trunk_ref->trunk->chan) {
ast_log(LOG_DEBUG, "Trunk didn't get created. chan: %lx\n", (long) trunk_ref->trunk->chan);
pbx_builtin_setvar_helper(chan, "SLASTATION_STATUS", "CONGESTION");
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS);
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS, NULL);
trunk_ref->chan = NULL;
return 0;
}
@ -4138,7 +4140,7 @@ static int sla_station_exec(struct ast_channel *chan, void *data)
if (res == 1) {
strncat(conf_name, "|K", sizeof(conf_name) - strlen(conf_name) - 1);
admin_exec(NULL, conf_name);
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS);
sla_change_trunk_state(trunk_ref->trunk, SLA_TRUNK_STATE_IDLE, ALL_TRUNK_REFS, NULL);
}
pbx_builtin_setvar_helper(chan, "SLASTATION_STATUS", "SUCCESS");
@ -4168,7 +4170,7 @@ static struct sla_ringing_trunk *queue_ringing_trunk(struct sla_trunk *trunk)
ringing_trunk->trunk = trunk;
ringing_trunk->ring_begin = ast_tvnow();
sla_change_trunk_state(trunk, SLA_TRUNK_STATE_RINGING, 0);
sla_change_trunk_state(trunk, SLA_TRUNK_STATE_RINGING, ALL_TRUNK_REFS, NULL);
ast_mutex_lock(&sla.lock);
AST_LIST_INSERT_HEAD(&sla.ringing_trunks, ringing_trunk, entry);
@ -4280,6 +4282,7 @@ static int sla_state(const char *data)
res = AST_DEVICE_INUSE;
break;
case SLA_TRUNK_STATE_ONHOLD:
case SLA_TRUNK_STATE_ONHOLD_BYME:
res = AST_DEVICE_ONHOLD;
break;
}

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