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chan-capi/chan_capi_chat.c

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/*
* An implementation of Common ISDN API 2.0 for Asterisk
*
* Copyright (C) 2005-2009 Cytronics & Melware
*
* Armin Schindler <armin@melware.de>
*
* This program is free software and may be modified and
* distributed under the terms of the GNU Public License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>
#include <sys/signal.h>
#include <sys/time.h>
#include <ctype.h>
#include "chan_capi_platform.h"
#include "chan_capi20.h"
#include "chan_capi.h"
#include "chan_capi_chat.h"
#include "chan_capi_utils.h"
#include "chan_capi_command.h"
#include "chan_capi_ami.h"
#include "chan_capi_devstate.h"
#ifdef DIVA_STREAMING
#include "platform.h"
#include "chan_capi_divastreaming_utils.h"
#endif
#define CHAT_FLAG_MOH 0x0001
#define CHAT_FLAG_SAMEMSG 0x0002
typedef enum {
RoomMemberDefault = 0, /* Rx/Tx by default, muted by operator */
RoomMemberListener = 1, /* Rx only, always muted */
RoomMemberOperator = 2 /* Rx/Tx, newer muted */
} room_member_type_t;
typedef enum {
RoomModeDefault = 0,
RoomModeMuted = 1
} room_mode_t;
#define PLCI_PER_LX_REQUEST 8
#define PBX_CHAT_GROUP_PREFIX ".G"
#define PBX_CHAT_MAX_GROUP_MEMBERS_PRI 31
#define PBX_CHAT_MAX_GROUP_MEMBERS_BRI 2
#define PBX_CHAT_MEMBER_INFO_RECENT 0x00000001
#define PBX_CHAT_MEMBER_INFO_REMOVE 0x00000002
struct capichat_s {
char name[16]; /* Name if group == 0 or Name.Ggroup] if group != 0 */
unsigned int number;
int active;
room_member_type_t room_member_type;
room_mode_t room_mode;
struct capi_pvt *i;
struct capichat_s *next;
unsigned int info;
time_t time;
unsigned int group; /* Group inside of conference, 0 - groups are not used, 1 - group root, > 1 - group in conference */
unsigned int groupUsers; /* Amount of users using this group */
};
struct _deffered_chat_capi_message;
typedef struct _deffered_chat_capi_message {
int busy;
_cdword datapath;
capi_prestruct_t p_struct;
unsigned char p_list[254];
} deffered_chat_capi_message_t;
static struct capichat_s *chat_list = NULL;
AST_MUTEX_DEFINE_STATIC(chat_lock);
AST_MUTEX_DEFINE_STATIC(chat_bridge_lock);
static volatile int pbx_capi_bridge_modify_state;
static ast_cond_t pbx_capi_bridge_modify_event;
/*
* LOCALS
*/
static const char* room_member_type_2_name(room_member_type_t room_member_type);
static size_t pbx_capi_create_full_room_name(const char* roomName, unsigned int group, char* dst, size_t dstLen);
static int pbx_capi_chat_get_group_controller(const char* roomName, unsigned int group);
static unsigned int pbx_capi_find_group (const char* roomName,
unsigned long long controllers,
int requiredController);
static unsigned int pbx_capi_add_group_user(const char* roomName, unsigned int groupNumber);
static unsigned int pbx_capi_remove_group_user(const char* roomName, unsigned int groupNumber);
static unsigned int pbx_capi_chat_get_group_member_count(const char* roomName,
unsigned int group,
int* groupController);
static void pbx_capi_chat_enter_bridge_modify_state(void);
static void pbx_capi_chat_leave_bridge_modify_state(void);
static struct capichat_s* pbx_capi_get_room_bridge(const char* roomName);
static struct capichat_s* pbx_capi_get_group_main_bridge(struct capi_pvt* mainPLCI);
static int pbx_capi_is_bridge_idle(const char* roomName);
static void pbx_capi_cleanup_bridge(const char* roomName, unsigned int groupNumber);
/*
* partial update the capi mixer for the given char room
*/
static struct capichat_s* update_capi_mixer_part(
struct capichat_s *chat_start,
int overall_found,
deffered_chat_capi_message_t* capi_msg,
int remove,
unsigned int roomnumber,
struct capi_pvt *i)
{
struct capi_pvt *ii, *ii_last = NULL;
struct capichat_s *room;
unsigned char* p_list = &capi_msg->p_list[0];
_cdword dest;
_cdword datapath;
capi_prestruct_t* p_struct = &capi_msg->p_struct;
unsigned int found = 0;
_cword j = 0;
struct capichat_s *new_chat_start = NULL;
room_member_type_t main_member_type = RoomMemberDefault;
room_mode_t room_mode = RoomModeDefault;
room = chat_start;
while (room != 0) {
if (room->i == i) {
main_member_type = room->room_member_type;
room_mode = room->room_mode;
break;
}
room = room->next;
}
if ((room_mode == RoomModeMuted) && (main_member_type == RoomMemberDefault)) {
main_member_type = RoomMemberListener;
}
room = chat_start;
while (room) {
if ((room->number == roomnumber) &&
(room->i != i)) {
if ((found >= PLCI_PER_LX_REQUEST) || ((j + 9) > sizeof(capi_msg->p_list))) {
/* maybe we need to split capi messages here */
new_chat_start = room;
break;
}
found++;
ii = room->i;
ii_last = ii;
p_list[j++] = 8;
p_list[j++] = (_cbyte)(ii->PLCI);
p_list[j++] = (_cbyte)(ii->PLCI >> 8);
p_list[j++] = (_cbyte)(ii->PLCI >> 16);
p_list[j++] = (_cbyte)(ii->PLCI >> 24);
dest = (remove) ? 0x00000000 : 0x00000003;
if (ii->channeltype == CAPI_CHANNELTYPE_NULL && ii->line_plci == 0) {
dest |= 0x00000030;
}
if (remove == 0) {
room_member_type_t room_member_type = room->room_member_type;
if ((room_mode == RoomModeMuted) && (room_member_type == RoomMemberDefault)) {
room_member_type = RoomMemberListener;
}
if ((main_member_type == RoomMemberListener) && (room_member_type == RoomMemberListener)) {
dest &= ~3U; /* Disable data transmission between two listener */
} else if ((main_member_type == RoomMemberListener) && (room_member_type != RoomMemberListener)) {
dest &= ~1U; /* Disable data transmission from main PLCI to member PLCI */
} else if ((main_member_type != RoomMemberListener) && (room_member_type == RoomMemberListener)) {
dest &= ~2U; /* Disable data transmission from member PLCI to main PLCI */
}
}
p_list[j++] = (_cbyte)(dest);
p_list[j++] = (_cbyte)(dest >> 8);
p_list[j++] = (_cbyte)(dest >> 16);
p_list[j++] = (_cbyte)(dest >> 24);
cc_verbose(3, 1, VERBOSE_PREFIX_3 CC_MESSAGE_NAME
" mixer: listed %s PLCI=0x%04x LI=0x%x\n", ii->vname, ii->PLCI, dest);
}
room = room->next;
}
if (found != 0) {
p_struct->wLen = j;
p_struct->info = p_list;
/* don't send DATA_B3 to me */
datapath = 0x00000000;
if (remove) {
/* now we need DATA_B3 again */
if (i->line_plci == 0) {
if (i->channeltype != CAPI_CHANNELTYPE_NULL) {
datapath = 0x0000000c;
} else {
datapath = 0x00000030;
}
}
if (overall_found == 1) {
/* only one left, enable DATA_B3 too */
if (ii_last->line_plci == 0) {
if (ii_last->channeltype != CAPI_CHANNELTYPE_NULL) {
p_list[5] |= 0x0c;
} else {
p_list[5] |= 0x30;
}
}
}
}
if ((i->channeltype == CAPI_CHANNELTYPE_NULL) && (i->line_plci == 0)) {
if (!remove) {
datapath |= 0x00000030;
}
}
capi_msg->busy = 1;
capi_msg->datapath = datapath;
}
return (new_chat_start);
}
/*!
* \note CAPI updates LI state on PLCI removal.
* If expect_plci_removal is true then do not send
* CAPI LI commands. All other actions are taken to
* ensure all side effects apply. CAPI updates LI
* state on PLCI removal.
*/
static void update_capi_mixer(
int remove,
unsigned int roomnumber,
struct capi_pvt *i,
deffered_chat_capi_message_t* update_segment,
int expect_plci_removal)
{
struct capichat_s *room;
unsigned int overall_found;
unsigned int nr_segments;
if (i->PLCI == 0) {
cc_verbose(2, 0, VERBOSE_PREFIX_3 CC_MESSAGE_NAME
" mixer: %s: PLCI is unset, abort.\n", i->vname);
return;
}
if (update_segment == 0) {
cc_mutex_lock(&chat_lock);
}
/*
Get overall amount of parties
*/
for (room = chat_list, overall_found = 0; room != 0; room = room->next) {
overall_found += ((room->number == roomnumber) && (room->i != i));
}
room = chat_list;
while (room != 0) {
if (room->number == roomnumber) {
room->active = overall_found + ((remove != 0) ? 0 : 1);
}
room = room->next;
}
nr_segments = overall_found/PLCI_PER_LX_REQUEST + (overall_found%PLCI_PER_LX_REQUEST != 0);
if (nr_segments != 0) {
deffered_chat_capi_message_t __segments[nr_segments];
deffered_chat_capi_message_t* segments = update_segment == 0 ? __segments : update_segment;
struct capichat_s *chat_start;
int segment_nr, nr;
for (segment_nr = 0, chat_start = chat_list; segment_nr < nr_segments && chat_start != 0; segment_nr++) {
segments[segment_nr].busy = 0;
chat_start = update_capi_mixer_part(chat_start, overall_found, &segments[segment_nr], remove, roomnumber, i);
}
if (update_segment == 0) {
cc_mutex_unlock(&chat_lock);
}
if (chat_start != 0) {
cc_log(LOG_ERROR, "%s:%s at %d.\n", __FILE__, __FUNCTION__, __LINE__);
}
if (update_segment == 0) {
for (nr = 0; nr < segment_nr; nr++) {
if (segments[nr].busy != 0) {
if (expect_plci_removal == 0) {
cc_verbose(3, 1, VERBOSE_PREFIX_3 CC_MESSAGE_NAME
" mixer: %s PLCI=0x%04x LI=0x%x\n", i->vname, i->PLCI, segments[nr].datapath);
capi_sendf(NULL, 0, CAPI_FACILITY_REQ, i->PLCI, get_capi_MessageNumber(),
"w(w(dc))",
FACILITYSELECTOR_LINE_INTERCONNECT,
0x0001, /* CONNECT */
segments[nr].datapath,
&segments[nr].p_struct);
}
}
}
}
return;
}
if (update_segment == 0) {
cc_mutex_unlock(&chat_lock);
}
}
static void update_all_capi_mixers(unsigned int roomnumber)
{
struct capichat_s *room;
unsigned int overall_found;
unsigned int nr_segments;
for (room = chat_list, overall_found = 0; room != 0; room = room->next) {
overall_found += (room->number == roomnumber);
}
nr_segments = overall_found/PLCI_PER_LX_REQUEST + (overall_found%PLCI_PER_LX_REQUEST != 0);
{
deffered_chat_capi_message_t *segments, *segment;
unsigned int PLCIS[overall_found];
int i, j, nr;
segments = ast_malloc (sizeof(*segments)*overall_found*nr_segments);
if (segments == 0) {
cc_mutex_unlock(&chat_lock);
return;
}
for (room = chat_list, i = 0; room != 0; room = room->next) {
if (room->number == roomnumber && room->i && room->i->PLCI != 0) {
segment = segments + i*nr_segments;
for (nr = 0; nr < nr_segments; nr++) {
segment[nr].busy = 0;
}
update_capi_mixer(0, roomnumber, room->i, segment, 0);
if (segment[0].busy != 0) {
PLCIS[i++] = room->i->PLCI;
}
}
}
cc_mutex_unlock(&chat_lock);
for (j = 0; j < i; j++) {
segment = segments + j*nr_segments;
for (nr = 0; nr < nr_segments; nr++) {
if (segment[nr].busy != 0) {
cc_verbose(3, 1, VERBOSE_PREFIX_3 CC_MESSAGE_NAME
" mixer: PLCI=0x%04x LI=0x%x\n", PLCIS[j], segment[nr].datapath);
capi_sendf(NULL, 0, CAPI_FACILITY_REQ, PLCIS[j], get_capi_MessageNumber(),
"w(w(dc))",
FACILITYSELECTOR_LINE_INTERCONNECT,
0x0001, /* CONNECT */
segment[nr].datapath,
&segment[nr].p_struct);
}
}
}
ast_free(segments);
}
}
/*
* delete a chat member
*/
static void del_chat_member(struct capichat_s *room, int expect_plci_removal)
{
struct capichat_s *tmproom;
struct capichat_s *tmproom2 = NULL;
unsigned int roomnumber = room->number;
struct capi_pvt *i = room->i;
cc_mutex_lock(&chat_lock);
tmproom = chat_list;
while (tmproom) {
if (tmproom == room) {
if (!tmproom2) {
chat_list = tmproom->next;
} else {
tmproom2->next = tmproom->next;
}
cc_verbose(3, 0, VERBOSE_PREFIX_3 "%s: removed chat member from room '%s' (%d)\n",
room->i->vname, room->name, room->number);
ast_free(room);
}
tmproom2 = tmproom;
tmproom = tmproom->next;
}
cc_mutex_unlock(&chat_lock);
update_capi_mixer(1, roomnumber, i, 0, expect_plci_removal);
}
/*
* add a new chat member
*/
static struct capichat_s *add_chat_member(const char *roomname, struct capi_pvt *i, room_member_type_t room_member_type, unsigned int groupNumber)
{
struct capichat_s *room = NULL;
struct capichat_s *tmproom;
unsigned int roomnumber = 1;
room_mode_t room_mode = RoomModeDefault;
room = ast_malloc(sizeof(struct capichat_s));
if (room == NULL) {
cc_log(LOG_ERROR, "Unable to allocate chan_capi chat struct.\n");
return NULL;
}
memset(room, 0, sizeof(struct capichat_s));
if (groupNumber == 0) {
strncpy(room->name, roomname, sizeof(room->name));
} else {
pbx_capi_create_full_room_name(roomname, groupNumber, room->name, sizeof(room->name));
}
room->name[sizeof(room->name) - 1] = 0;
room->i = i;
room->room_member_type = room_member_type;
room->group = groupNumber;
cc_mutex_lock(&chat_lock);
tmproom = chat_list;
while (tmproom) {
if (!strcmp(tmproom->name, room->name)) {
roomnumber = tmproom->number;
room_mode = tmproom->room_mode;
break;
} else {
if (tmproom->number >= roomnumber) {
roomnumber = tmproom->number + 1;
}
}
tmproom = tmproom->next;
}
room->number = roomnumber;
room->room_mode = room_mode;
for (tmproom = chat_list; tmproom != NULL; tmproom = tmproom->next) {
if (tmproom->number == roomnumber) {
tmproom->info &= ~PBX_CHAT_MEMBER_INFO_RECENT;
}
}
room->info |= PBX_CHAT_MEMBER_INFO_RECENT;
room->time = time(NULL);
room->next = chat_list;
chat_list = room;
cc_mutex_unlock(&chat_lock);
cc_verbose(3, 0, VERBOSE_PREFIX_3 "%s: added new chat member to room '%s' %s(%d)\n",
i->vname, roomname, room_member_type_2_name(room_member_type), roomnumber);
update_capi_mixer(0, roomnumber, i, 0, 0);
return room;
}
/*
* loop during chat
*/
static void chat_handle_events(struct ast_channel *c, struct capi_pvt *i,
struct capichat_s *room, unsigned int flags, struct capi_pvt* iline,
FILE* voice_message, unsigned int hangup_timeout, int* pbx_detected_hangup)
{
struct ast_frame *f;
int ms;
int exception;
int ready_fd;
int waitfd;
int nfds = 0;
struct ast_channel *rchan;
struct ast_channel *chan = c;
int moh_active = 0, voice_message_moh_active = 0;
int write_block_nr = 2;
time_t alone_since = time(NULL);
int local_detected_hangup;
int* detected_hangup = (pbx_detected_hangup != NULL) ? pbx_detected_hangup : &local_detected_hangup;
*detected_hangup = 0;
if (voice_message == NULL) {
ast_indicate(chan, -1);
}
waitfd = i->readerfd;
if (i->channeltype == CAPI_CHANNELTYPE_NULL) {
int fmt = (i->line_plci != 0 && i->line_plci->bproto == CC_BPROTO_VOCODER) ? i->line_plci->codec : capi_capability;
nfds = 1;
ast_set_read_format(chan, fmt);
ast_set_write_format(chan, fmt);
}
if ((flags & CHAT_FLAG_MOH) && ((room->active < 2) || (voice_message != NULL))) {
#if defined(CC_AST_HAS_VERSION_1_6) || defined(CC_AST_HAS_VERSION_1_4)
ast_moh_start(chan, NULL, NULL);
#else
ast_moh_start(chan, NULL);
#endif
if (voice_message == NULL) {
moh_active = 1;
} else {
voice_message_moh_active = 1;
}
}
while (1) {
ready_fd = 0;
ms = 100;
errno = 0;
exception = 0;
if ((room->info & PBX_CHAT_MEMBER_INFO_REMOVE) != 0) {
break;
}
rchan = ast_waitfor_nandfds(&chan, 1, &waitfd, nfds, &exception, &ready_fd, &ms);
if (rchan) {
f = ast_read(chan);
if (!f) {
if (voice_message != NULL)
continue;
cc_verbose(3, 1, VERBOSE_PREFIX_3 "%s: chat: no frame, hangup.\n",
i->vname);
*detected_hangup = 1;
break;
}
if ((f->frametype == AST_FRAME_CONTROL) &&
(FRAME_SUBCLASS_INTEGER(f->subclass) == AST_CONTROL_HANGUP)) {
cc_verbose(3, 1, VERBOSE_PREFIX_3 "%s: chat: hangup frame.\n",
i->vname);
ast_frfree(f);
*detected_hangup = 1;
break;
} else if (f->frametype == AST_FRAME_VOICE) {
cc_verbose(5, 1, VERBOSE_PREFIX_3 "%s: chat: voice frame.\n",
i->vname);
if ((voice_message == NULL) && (i->channeltype == CAPI_CHANNELTYPE_NULL)) {
capi_write_frame(i, f);
} else if ((iline != NULL) && (!(flags & CHAT_FLAG_SAMEMSG))) {
capi_write_frame(iline, f);
}
} else if (f->frametype == AST_FRAME_NULL) {
/* ignore NULL frame */
cc_verbose(5, 1, VERBOSE_PREFIX_3 "%s: chat: NULL frame, ignoring.\n",
i->vname);
#ifdef CC_AST_HAS_VERSION_1_4
} else if ((f->frametype == AST_FRAME_DTMF_END) && (voice_message == NULL)) {
#else
} else if ((f->frametype == AST_FRAME_DTMF) && (voice_message == NULL)) {
#endif
pbx_capi_voicecommand_process_digit(i, c, FRAME_SUBCLASS_INTEGER(f->subclass));
} else {
cc_verbose(3, 1, VERBOSE_PREFIX_3 "%s: chat: unhandled frame %d/%d.\n",
i->vname, f->frametype, FRAME_SUBCLASS_INTEGER(f->subclass));
}
ast_frfree(f);
} else if (ready_fd == i->readerfd) {
if (exception) {
cc_verbose(1, 0, VERBOSE_PREFIX_3 "%s: chat: exception on readerfd\n",
i->vname);
break;
}
f = capi_read_pipeframe(i);
if (f->frametype == AST_FRAME_VOICE) {
if (voice_message == NULL) {
ast_write(chan, f);
} else {
struct ast_frame *fr2;
char* p = f->FRAME_DATA_PTR;
int len;
do {
if ((len = fread(p, 1, f->datalen, voice_message)) > 0) {
if (len < f->datalen) {
memset (&p[len], 0x00, f->datalen-len);
len = 0;
}
if (flags & CHAT_FLAG_SAMEMSG) {
fr2 = ast_frdup(f);
if (iline != NULL) {
capi_write_frame(iline, fr2);
} else {
ast_write(chan, fr2);
}
ast_frfree(fr2);
}
capi_write_frame(i, f);
}
} while ((write_block_nr-- != 0) && (len > 0));
if (len <= 0) {
break;
}
write_block_nr = 0;
}
}
/* ignore other nullplci frames */
} else {
if ((ready_fd < 0) && ms) {
if (errno == 0 || errno == EINTR)
continue;
cc_log(LOG_WARNING, "%s: Wait failed (%s).\n",
chan->name, strerror(errno));
break;
}
}
if ((moh_active) && (room->active > 1)) {
ast_moh_stop(chan);
moh_active = 0;
}
if (hangup_timeout > 0) {
if (room->active > 1) {
alone_since = time(NULL);
} else {
if ((alone_since + hangup_timeout) < time(NULL)) {
cc_verbose(3, 1, VERBOSE_PREFIX_3 "%s: chat: reached (alone) hangup timeout.\n",
i->vname);
break;
}
}
}
}
if (voice_message_moh_active != 0) {
ast_moh_stop(chan);
}
}
/*
* start the chat
*/
int pbx_capi_chat(struct ast_channel *c, char *param)
{
struct capi_pvt *i = NULL;
char *roomname, *controller, *options;
char *p;
struct capichat_s *room;
ast_group_t tmpcntr;
unsigned long long contr = 0;
unsigned int flags = 0;
unsigned int hangup_timeout = 0;
room_member_type_t room_member_type = RoomMemberDefault;
time_t conferenceConnectTime;
int largeConferenceMode = 0;
unsigned int selectedGroup = 0;
unsigned int bridgeUsers = 0;
int expect_plci_removal;
roomname = strsep(&param, COMMANDSEPARATOR);
options = strsep(&param, COMMANDSEPARATOR);
controller = param;
if (!roomname) {
cc_log(LOG_WARNING, CC_MESSAGE_NAME " chat requires room name.\n");
return -1;
}
if (controller) {
for (p = controller; p && *p; p++) {
if (*p == '|') *p = ',';
}
tmpcntr = ast_get_group(controller);
contr = (unsigned long long)(tmpcntr >> 1);
}
while ((options) && (*options)) {
switch (*options) {
case 'm':
flags |= CHAT_FLAG_MOH;
break;
case 'h':
hangup_timeout = 0;
while (isdigit(options[1])) {
hangup_timeout *= 10;
hangup_timeout += (options[1] - '0');
options++;
}
break;
case 'l':
room_member_type = RoomMemberListener;
break;
case 'o':
room_member_type = RoomMemberOperator;
break;
case 'g':
largeConferenceMode = 1;
break;
default:
cc_log(LOG_WARNING, "Unknown chat option '%c'.\n",
*options);
break;
}
options++;
}
if (c->tech == &capi_tech) {
i = CC_CHANNEL_PVT(c);
} else {
/* virtual CAPI channel */
i = pbx_check_resource_plci(c);
}
if (largeConferenceMode != 0) {
int c;
pbx_capi_chat_enter_bridge_modify_state();
selectedGroup = pbx_capi_find_group (roomname, contr, (i != NULL) ? i->controller : -1);
if (selectedGroup == 0) {
pbx_capi_chat_leave_bridge_modify_state();
if (i != NULL) {
capi_remove_nullif(i);
}
return -1;
}
c = pbx_capi_chat_get_group_controller(roomname, selectedGroup);
if (c > 0) {
contr = (1LU << (c - 1));
}
bridgeUsers = pbx_capi_add_group_user(roomname, selectedGroup);
pbx_capi_chat_leave_bridge_modify_state();
}
cc_verbose(3, 1, VERBOSE_PREFIX_3 CC_MESSAGE_NAME " chat: %s: roomname=%s group=%u group users=%u"
"options=%s hangup_timeout=%d controller=%s (0x%llx)\n",
c->name, roomname, selectedGroup, bridgeUsers, options, hangup_timeout, controller, contr);
if (c->tech != &capi_tech) {
if (i == NULL) {
i = capi_mknullif(c, contr);
}
if (i == NULL) {
pbx_capi_cleanup_bridge (roomname, selectedGroup);
return -1;
}
}
if (c->_state != AST_STATE_UP) {
ast_answer(c);
}
capi_wait_for_answered(i);
if (!(capi_wait_for_b3_up(i))) {
goto out;
}
room = add_chat_member(roomname, i, room_member_type, selectedGroup);
if (!room) {
cc_log(LOG_WARNING, "Unable to open " CC_MESSAGE_NAME " chat room.\n");
capi_remove_nullif(i);
pbx_capi_cleanup_bridge (roomname, selectedGroup);
return -1;
}
pbx_capi_chat_join_event(c, room);
if (room->active == 1) {
pbx_capi_chat_room_state_event(room->name, 1);
}
conferenceConnectTime = time(NULL);
/* main loop */
chat_handle_events(c, i, room, flags, 0, 0, hangup_timeout, &expect_plci_removal);
pbx_capi_chat_leave_event(c, room, time(NULL)-conferenceConnectTime);
if (room->active == 1) {
pbx_capi_chat_conference_end_event (room->name);
pbx_capi_chat_room_state_event(room->name, 0);
}
expect_plci_removal |= (i->channeltype == CAPI_CHANNELTYPE_NULL); /* NULL PLCI is removed, no need to update CAPI LI state */
del_chat_member(room, expect_plci_removal);
out:
capi_remove_nullif(i);
pbx_capi_cleanup_bridge (roomname, selectedGroup);
return 0;
}
int pbx_capi_chat_play(struct ast_channel *c, char *param)
{
struct capi_pvt *i = NULL;
char *roomname, *options, *file_name, *controller;
char *p;
struct capichat_s *room;
ast_group_t tmpcntr;
unsigned long long contr = 0;
unsigned int flags = 0;
room_member_type_t room_member_type = RoomMemberOperator;
FILE* f;
if (param == 0 || *param == 0) {
cc_log(LOG_WARNING, CC_MESSAGE_NAME " chat_play requires parameters.\n");
return (-1);
}
roomname = strsep(&param, COMMANDSEPARATOR);
options = strsep(&param, COMMANDSEPARATOR);
file_name = strsep(&param, COMMANDSEPARATOR);
controller = param;
if (!roomname) {
cc_log(LOG_WARNING, CC_MESSAGE_NAME " chat_play requires room name.\n");
return -1;
}
if (!file_name || !*file_name) {
cc_log(LOG_WARNING, CC_MESSAGE_NAME " chat_play requires file name.\n");
return -1;
}
{
int chat_members;
cc_mutex_lock(&chat_lock);
for (room = chat_list, chat_members = 0; room != 0 && chat_members == 0; room = room->next) {
chat_members += (strcmp(room->name, roomname) == 0);
}
cc_mutex_unlock(&chat_lock);
if (chat_members == 0) {
return 0;
}
}
while ((options) && (*options)) {
switch (*options) {
case 'm':
flags |= CHAT_FLAG_MOH;
break;
case 's':
flags |= CHAT_FLAG_SAMEMSG;
break;
default:
cc_log(LOG_WARNING, "Unknown chat option '%c'.\n",
*options);
break;
}
options++;
}
if ((flags & (CHAT_FLAG_MOH | CHAT_FLAG_SAMEMSG)) == (CHAT_FLAG_MOH | CHAT_FLAG_SAMEMSG)) {
cc_log(LOG_WARNING, "chat_play: option 's' overrides 'm'.\n");
flags &= ~CHAT_FLAG_MOH;
}
f = fopen(file_name, "rb");
if (f == NULL) {
cc_log(LOG_WARNING, "can't open voice file (%s)\n", strerror(errno));
return -1;
}
{
unsigned char tmp[2] = { 0, 0 };
if (fread(tmp, 1, 2, f) != 2) {
cc_log(LOG_WARNING, "can't read voice file (%s)\n", strerror(errno));
fclose(f);
return -1;
}
}
rewind(f);
if (controller) {
for (p = controller; p && *p; p++) {
if (*p == '|') *p = ',';
}
tmpcntr = ast_get_group(controller);
contr = (unsigned long long)(tmpcntr >> 1);
}
cc_verbose(3, 1, VERBOSE_PREFIX_3 CC_MESSAGE_NAME " chat_play: %s: roomname=%s "
"message=%s controller=%s (0x%llx)\n",
c->name, roomname, file_name, controller, contr);
i = capi_mknullif(c, contr);
if (i == NULL) {
fclose (f);
cc_log(LOG_WARNING, "Unable to play %s to chat room %s", file_name, roomname);
return (-1);
}
if (c->_state != AST_STATE_UP) {
ast_answer(c);
}
capi_wait_for_answered(i);
if (!(capi_wait_for_b3_up(i))) {
goto out;
}
room = add_chat_member(roomname, i, room_member_type, 0);
if (!room) {
capi_remove_nullif(i);
fclose (f);
cc_log(LOG_WARNING, "Unable to open " CC_MESSAGE_NAME " chat room.\n");
return -1;
}
/* main loop */
chat_handle_events(c, i, room, flags, (c->tech == &capi_tech) ? (CC_CHANNEL_PVT(c)) : 0, f, 0, NULL);
del_chat_member(room, 1);
out:
fclose (f);
capi_remove_nullif(i);
return 0;
}
int pbx_capi_chat_command(struct ast_channel *c, char *param)
{
struct capichat_s *room, *tmproom;
struct capi_pvt *i;
unsigned int roomnumber, ret = 0;
const char* options = strsep(&param, COMMANDSEPARATOR);
const char* roomname = param;
unsigned int disconnect_command = 0;
if (options == 0 || *options == 0) {
cc_log(LOG_WARNING, CC_MESSAGE_NAME " chat_command requires options.\n");
return -1;
}
if (roomname == 0 && *roomname == 0) {
roomname = 0;
}
while (*options != 0) {
switch (*options) {
case 'r': /* Disconnect recent member */
disconnect_command |= 1U;
break;
case 'l': /* Disconnect all listeners */
disconnect_command |= 2U;
break;
case 'o': /* Disconnect all operators */
disconnect_command |= 4U;
break;
case 'a': /* Disconnect all users */
disconnect_command |= 8U;
break;
default:
cc_log(LOG_WARNING, "Unknown chat_disconnect option '%c'.\n", *options);
break;
}
options++;
}
if (disconnect_command != 0) {
i = pbx_check_resource_plci(c);
cc_mutex_lock(&chat_lock);
for (room = chat_list; room != 0; room = room->next) {
if (((roomname != 0 && strcmp(room->name, roomname) == 0) || (i != 0 && room->i == i)) &&
(room->i != 0 && (room->i->used == c || room->i->peer == c))) {
if (room->room_member_type == RoomMemberOperator) {
struct capichat_s *recent = 0;
time_t t = 0;
roomnumber = room->number;
cc_verbose(3, 0, VERBOSE_PREFIX_3 "%s: command %08x (%d)\n",
room->name, disconnect_command, roomnumber);
for (tmproom = chat_list; tmproom != 0; tmproom = tmproom->next) {
if (tmproom->number == roomnumber && tmproom != room) {
if ((disconnect_command & 8U) != 0) {
tmproom->info |= PBX_CHAT_MEMBER_INFO_REMOVE;
} else if ((disconnect_command & 2U) != 0 && room->room_member_type == RoomMemberListener) {
tmproom->info |= PBX_CHAT_MEMBER_INFO_REMOVE;
} else if ((disconnect_command & 4U) != 0 && room->room_member_type == RoomMemberOperator) {
tmproom->info |= PBX_CHAT_MEMBER_INFO_REMOVE;
} else if ((disconnect_command & 1U) != 0) {
if (t < tmproom->time) {
t = tmproom->time;
recent = tmproom;
}
}
}
}
if (recent != 0) {
recent->info |= PBX_CHAT_MEMBER_INFO_REMOVE;
}
} else {
cc_verbose(3, 0, VERBOSE_PREFIX_3 "%s: no permissions for command command %08x\n",
room->name, disconnect_command);
ret = -1;
}
break;
}
}
cc_mutex_unlock(&chat_lock);
}
return (ret);
}
struct capi_pvt* pbx_check_resource_plci(struct ast_channel *c)
{
struct capi_pvt *i = NULL;
if (c != NULL) {
const char* id = pbx_builtin_getvar_helper(c, "RESOURCEPLCI");
if (id != 0) {
i = (struct capi_pvt*)strtoul(id, NULL, 0);
if (i != 0 && capi_verify_resource_plci(i) != 0) {
cc_log(LOG_ERROR, "resource PLCI lost\n");
i = 0;
}
}
}
return i;
}
int pbx_capi_chat_associate_resource_plci(struct ast_channel *c, char *param)
{
struct capi_pvt *i = NULL;
char *controller, *codeclist;
char *p;
ast_group_t tmpcntr;
unsigned long long contr = 0;
cc_format_t codecs = 0; /* codecs are disabled by default */
int all = 0;
controller = pbx_capi_strsep_controller_list (&param);
codeclist = param;
if (controller) {
for (p = controller; p && *p; p++) {
if (*p == '|') *p = ',';
}
tmpcntr = ast_get_group(controller);
contr = (unsigned long long)(tmpcntr >> 1);
}
if (param != 0) { /* Separated by '+' list of codecs */
char* currentcodec;
while (all == 0 && (currentcodec = strsep (&param, "+")) != 0) {
if (strcmp (currentcodec, "all") == 0) {
all = 1; /* All supported by selected controller codecs */
} else {
codecs |= ast_getformatbyname (currentcodec);
}
}
}
if (c->tech != &capi_tech) {
i = capi_mkresourceif(c, contr, 0, codecs, all);
if (i != NULL) {
char buffer[24];
snprintf(buffer, sizeof(buffer)-1, "%p", i);
/**
Not sure ast_channel pointer does not change across the
use of resource PLCI. For this reason use variable to provide
the pointer to resource PLCI to resource PLCI user
\todo This is still possible that resource PLCI will be lost.
In case this happens this will be necessary to maintain one
live time stamp on resource PLCI and automatically remove
resource LCI if time stamp exceeds certail limit.
*/
pbx_builtin_setvar_helper(c, "RESOURCEPLCI", buffer);
capi_mkresourceif(c, contr, i, codecs, all);
}
}
return 0; /* Always return success in case c->tech == &capi_tech or to fallback to NULL PLCI */
}
/*
* do command capi chatinfo
*/
#ifdef CC_AST_HAS_VERSION_1_6
char *pbxcli_capi_chatinfo(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
#else
int pbxcli_capi_chatinfo(int fd, int argc, char *argv[])
#endif
{
struct capichat_s *room = NULL;
struct ast_channel *c;
#ifdef CC_AST_HAS_VERSION_1_6
int fd = a->fd;
if (cmd == CLI_INIT) {
e->command = CC_MESSAGE_NAME " chatinfo";
e->usage = chatinfo_usage;
return NULL;
} else if (cmd == CLI_GENERATE)
return NULL;
if (a->argc != e->args)
return CLI_SHOWUSAGE;
#else
if (argc != 2)
return RESULT_SHOWUSAGE;
#endif
if (chat_list == NULL) {
ast_cli(fd, "There are no members in " CC_MESSAGE_NAME " chat.\n");
return RESULT_SUCCESS;
}
ast_cli(fd, CC_MESSAGE_NAME " chat\n");
ast_cli(fd, "%-6s%-17s%-40s%-17s\n", "Room#", "Roomname", "Member", "Caller");
cc_mutex_lock(&chat_lock);
room = chat_list;
while (room) {
c = room->i->owner;
if (!c) {
c = room->i->used;
}
if (!c) {
ast_cli(fd, "%5d %-17s%-40s\"%s\" <%s>\n",
room->number, room->name, room->i->vname,
"?", "?");
} else {
ast_cli(fd, "%5d %-17s%-40s\"%s\" <%s>\n",
room->number, room->name, c->name,
pbx_capi_get_callername (c, ""), pbx_capi_get_cid (c, ""));
}
room = room->next;
}
cc_mutex_unlock(&chat_lock);
#ifdef CC_AST_HAS_VERSION_1_6
return CLI_SUCCESS;
#else
return RESULT_SUCCESS;
#endif
}
static const char* room_member_type_2_name(room_member_type_t room_member_type)
{
switch (room_member_type) {
case RoomMemberListener:
return "in listener mode ";
case RoomMemberOperator:
return "in operator mode ";
default:
return "";
}
}
int pbx_capi_chat_mute(struct ast_channel *c, char *param)
{
struct capichat_s *room;
unsigned int roomnumber;
room_mode_t room_mode;
const char* roommode = strsep(&param, COMMANDSEPARATOR);
const char* roomname = param;
struct capi_pvt *i;
if (roommode == 0 || *roommode == 0) {
cc_log(LOG_WARNING, CC_MESSAGE_NAME " chat_mute requires room mode.\n");
return -1;
}
if (ast_true(roommode)) {
room_mode = RoomModeMuted;
} else if (ast_false(roommode)) {
room_mode = RoomModeDefault;
} else {
cc_log(LOG_WARNING, CC_MESSAGE_NAME " false parameter for chat_mute.\n");
cc_log(LOG_WARNING, "Parameter for chat_mute invalid.\n");
return -1;
}
if (roomname == 0 && *roomname == 0) {
roomname = 0;
}
i = pbx_check_resource_plci(c);
cc_mutex_lock(&chat_lock);
for (room = chat_list; room != 0; room = room->next) {
if ((roomname != 0 && strcmp(room->name, roomname) == 0) ||
(i != 0 && room->i == i) ||
(room->i != 0 && (room->i->used == c || room->i->peer == c))) {
roomnumber = room->number;
cc_verbose(3, 0, VERBOSE_PREFIX_3 "%s: change mode to %s (%d)\n",
room->name, room_mode == RoomModeDefault ? "full duplex" : "half duplex", roomnumber);
for (room = chat_list; room != 0; room = room->next) {
if (room->number == roomnumber) {
room->room_mode = room_mode;
}
}
update_all_capi_mixers(roomnumber);
return 0;
}
}
cc_mutex_unlock(&chat_lock);
return -1;
}
/*
CLI interface
*/
int pbx_capi_chat_remove_user(const char* roomName, const char* memberName)
{
struct capichat_s *room;
unsigned int roomnumber;
int ret = -1;
cc_mutex_lock(&chat_lock);
for (room = chat_list; room != 0; room = room->next) {
if (strcmp(room->name, roomName) == 0) {
roomnumber = room->number;
break;
}
}
if (room != 0) {
for (room = chat_list; room != 0; room = room->next) {
if ((roomnumber == room->number) && (room->i != 0)) {
struct ast_channel *c = room->i->owner;
if (c == 0) {
c = room->i->used;
}
if (c != 0) {
if (strcmp (memberName, c->name) == 0) {
room->info |= PBX_CHAT_MEMBER_INFO_REMOVE;
ret = 0;
}
}
}
}
}
cc_mutex_unlock(&chat_lock);
return ret;
}
/*!
* \brief Chat Room enumerator
*
* \note called unter protection of chat_lock
*/
const struct capichat_s *pbx_capi_chat_get_room_c(const struct capichat_s * room)
{
if (room == 0)
return chat_list;
return room->next;
}
/*!
* \brief Get room name
*
* \note called unter protection of chat_lock
*/
const char* pbx_capi_chat_get_room_name(const struct capichat_s * room)
{
return room->name;
}
/*!
* \brief Get room number
*
* \note called unter protection of chat_lock
*/
unsigned int pbx_capi_chat_get_room_number(const struct capichat_s * room)
{
return room->number;
}
/*!
* \brief Get number of members in room
*
* \note called unter protection of chat_lock
*/
unsigned int pbx_capi_chat_get_room_members(const struct capichat_s * room)
{
return room->active;
}
/*!
* \brief Is entire room muted
*
* \note called unter protection of chat_lock
*/
int pbx_capi_chat_is_room_muted(const struct capichat_s * room)
{
return (room->room_mode == RoomModeMuted);
}
/*!
* \brief Get room channel
*
* \note called unter protection of chat_lock
*/
struct ast_channel *pbx_capi_chat_get_room_channel(const struct capichat_s * room)
{
struct ast_channel *c = NULL;
if ((room != NULL) && (room->i != NULL)) {
c = (room->i->owner != 0) ? room->i->owner : room->i->used;
}
return (c);
}
/*!
* \brief Get room interface
*
* \note called unter protection of chat_lock
*/
const struct capi_pvt* pbx_capi_chat_get_room_interface_c(const struct capichat_s * room) {
return (room->i);
}
/*!
* \brief Is user operator
*
* \note called unter protection of chat_lock
*/
int pbx_capi_chat_is_member_operator(const struct capichat_s * room)
{
return (room->room_member_type == RoomMemberOperator);
}
/*!
* \brief Is member muted
*
* \note called unter protection of chat_lock
*/
int pbx_capi_chat_is_member_muted(const struct capichat_s * room)
{
int isMuted = 0;
isMuted |= ((room->i != 0) &&
(room->i->divaDigitalTxGain == 0x100));
isMuted |= ((room->i != 0 ) &&
(room->i->line_plci != 0) &&
(room->i->line_plci->divaDigitalTxGain == 0x100));
isMuted |= ((room->i != 0 ) &&
(room->i->data_plci != 0) &&
(room->i->data_plci->divaDigitalTxGain == 0x100));
return (isMuted);
}
/*!
* \brief Is user listener
*
* \note called unter protection of chat_lock
*/
int pbx_capi_chat_is_member_listener(const struct capichat_s * room)
{
return (room->room_member_type == RoomMemberListener);
}
/*!
* \brief Is most recent user
*
* \note called unter protection of chat_lock
*/
int pbx_capi_chat_is_most_recent_user(const struct capichat_s * room)
{
return ((room->info & PBX_CHAT_MEMBER_INFO_RECENT) != 0);
}
/*!
* \brief Get room group
*
* \note called unter protection of chat_lock
*/
unsigned int pbx_capi_chat_get_room_group (const struct capichat_s * room) {
return room->group;
}
/*!
* \brief Get room group
*
* \note called unter protection of chat_lock
*/
unsigned int pbx_capi_chat_get_room_group_members (const struct capichat_s * room) {
return room->groupUsers;
}
/*!
* \brief Lock chat list
*/
void pbx_capi_lock_chat_rooms(void)
{
cc_mutex_lock(&chat_lock);
}
/*!
* \brief Unlock chat list
*/
void pbx_capi_unlock_chat_rooms(void)
{
cc_mutex_unlock(&chat_lock);
}
/*!
\brief Connect two conference rooms.
*/
static struct capi_pvt*
pbx_capi_create_conference_bridge(const char* mainName,
unsigned long long mainController,
unsigned int mainGroup,
const char* additionalName,
unsigned long long additionalController,
unsigned int additionalGroup)
{
struct capi_pvt *capi_ifc[2] = { 0, 0 };
struct capichat_s *room[sizeof(capi_ifc)/sizeof(capi_ifc[0])] = { 0, 0 };
const char* name[sizeof(capi_ifc)/sizeof(capi_ifc[0])] = { mainName, additionalName };
unsigned long long controller[sizeof(capi_ifc)/sizeof(capi_ifc[0])] = { mainController, additionalController };
unsigned int roomNumber[2] = { mainGroup, additionalGroup };
int error, i;
if ((mainName == 0) || (additionalName == 0) ||
(mainController == 0) || (additionalController == 0))
return NULL;
for (i = 0, error = 0; (error == 0) && (i < sizeof(name)/sizeof(name[0])); i++) {
capi_ifc[i] = capi_mknullif(NULL, controller[i]);
error |= (capi_ifc[i] == NULL);
}
if (error == 0) {
cc_mutex_lock(&capi_ifc[0]->lock);
capi_ifc[0]->bridgePeer = capi_ifc[1];
cc_mutex_unlock(&capi_ifc[0]->lock);
cc_mutex_lock(&capi_ifc[1]->lock);
capi_ifc[1]->bridgePeer = capi_ifc[0];
cc_mutex_unlock(&capi_ifc[1]->lock);
}
for (i = 0; (error == 0) && (i < sizeof(name)/sizeof(name[0])); i++) {
room[i] = add_chat_member(name[i], capi_ifc[i], RoomMemberOperator, roomNumber[i]);
error |= (room[i] == NULL);
}
if (error != 0) {
for (i = 0; i < sizeof(name)/sizeof(name[0]); i++) {
if (room[i] != 0) {
del_chat_member(room[i], 1);
}
if (capi_ifc[i] != 0) {
capi_remove_nullif(capi_ifc[i]);
capi_ifc[i] = 0;
}
}
}
if (capi_ifc[0] != NULL) {
if (mainGroup != 0) {
size_t mainFullNameLength = pbx_capi_create_full_room_name(mainName, mainGroup, NULL, 0);
size_t additionalFullNameLength = pbx_capi_create_full_room_name(additionalName, additionalGroup, NULL, 0);
char* mainFullName = alloca(mainFullNameLength);
char* additionalFullName = alloca(additionalFullNameLength);
pbx_capi_create_full_room_name(mainName, mainGroup, mainFullName, mainFullNameLength);
pbx_capi_create_full_room_name(additionalName, additionalGroup, additionalFullName, additionalFullNameLength);
snprintf(capi_ifc[0]->vname, sizeof(capi_ifc[0]->vname)-1, "%s -> %s", mainFullName, additionalFullName);
capi_ifc[0]->vname[sizeof(capi_ifc[0]->vname)-1] = 0;
snprintf(capi_ifc[0]->name, sizeof(capi_ifc[0]->name)-1, "%s", capi_ifc[0]->vname);
capi_ifc[0]->name[sizeof(capi_ifc[0]->name)-1] = 0;
snprintf(capi_ifc[1]->vname, sizeof(capi_ifc[1]->vname)-1, "%s -> %s", additionalFullName, mainFullName);
capi_ifc[1]->vname[sizeof(capi_ifc[1]->vname)-1] = 0;
snprintf(capi_ifc[1]->name, sizeof(capi_ifc[1]->name)-1, "%s", capi_ifc[1]->vname);
capi_ifc[1]->name[sizeof(capi_ifc[1]->name)-1] = 0;
cc_verbose(2, 0, VERBOSE_PREFIX_2 CC_MESSAGE_NAME
" Create bridge '%s' <-> '%s'\n", mainFullName, additionalFullName);
}
}
return capi_ifc[0];
}
/*!
\brief Connect two conference rooms. "room,controller,room,controller";
*/
int pbx_capi_chat_connect(struct ast_channel *c, char *param) {
char* rooms[2];
unsigned long long controllers[sizeof(rooms)/sizeof(rooms[0])] = { 0UL, 0UL };
struct capi_pvt *capi_ifc;
int i;
for (i = 0; i < sizeof(rooms)/sizeof(rooms[0]); i++) {
char* v;
rooms[i] = strsep(&param, COMMANDSEPARATOR);
v = pbx_capi_strsep_controller_list (&param);
controllers[i] = (unsigned long long)(ast_get_group(v) >> 1);
}
capi_ifc = pbx_capi_create_conference_bridge(rooms[0], controllers[0], 0, rooms[1], controllers[1], 0);
if (capi_ifc != NULL) {
cc_verbose(3, 0, VERBOSE_PREFIX_3 CC_MESSAGE_NAME
"Chat connect '%s' <-> '%s'\n", rooms[0], rooms[1]);
} else {
cc_log(LOG_WARNING, "Chat failed to connect '%s' <-> '%s'\n", rooms[0], rooms[1]);
}
return ((capi_ifc != NULL) ? 0 : -1);
}
/*!
\brief Initialize group name with respect to group number
*/
static size_t pbx_capi_create_full_room_name(const char* roomName, unsigned int group, char* dst, size_t dstLen)
{
if (dst != NULL) {
snprintf(dst, dstLen - 1, "%s%s%04d", roomName, PBX_CHAT_GROUP_PREFIX, group);
dst[dstLen - 1] = 0;
} else {
return (strlen(roomName)+strlen(PBX_CHAT_GROUP_PREFIX)+32);
}
return (strlen(dst));
}
/*!
\brief Calculate amount of members in group
*/
static unsigned int pbx_capi_chat_get_group_member_count(const char* roomName,
unsigned int group,
int* groupController)
{
size_t fullRoomNameLength = pbx_capi_create_full_room_name(roomName, group, NULL, 0);
char* fullRoomName = alloca(fullRoomNameLength);
struct capichat_s *currentRoom;
int numberOfMembers;
pbx_capi_create_full_room_name(roomName, group, fullRoomName, fullRoomNameLength);
cc_mutex_lock(&chat_lock);
for (currentRoom = chat_list, numberOfMembers = 0; ((group != 0) && (currentRoom != 0)); currentRoom = currentRoom->next) {
if ((currentRoom->group == group) && (strcmp(currentRoom->name, fullRoomName) == 0)) {
if (currentRoom->i != NULL) {
*groupController = currentRoom->i->controller;
}
numberOfMembers++;
}
}
cc_mutex_unlock(&chat_lock);
return numberOfMembers;
}
static int pbx_capi_chat_get_group_controller(const char* roomName, unsigned int group)
{
size_t fullRoomNameLength = pbx_capi_create_full_room_name(roomName, group, NULL, 0);
char* fullRoomName = alloca(fullRoomNameLength);
struct capichat_s *currentRoom;
int controller;
pbx_capi_create_full_room_name(roomName, group, fullRoomName, fullRoomNameLength);
cc_mutex_lock(&chat_lock);
for (currentRoom = chat_list, controller = -1;
((controller < 0) && (group != 0) && (currentRoom != 0));
currentRoom = currentRoom->next) {
if ((currentRoom->group == group) && (strcmp(currentRoom->name, fullRoomName) == 0) && currentRoom->i != NULL)
controller = currentRoom->i->controller;
}
cc_mutex_unlock(&chat_lock);
return controller;
}
/*!
\brief Find froup with max free number
*/
static unsigned int pbx_capi_chat_find_free_group (const char* roomName) {
struct capichat_s *currentRoom;
char* roomNameTemplate = alloca(strlen(roomName) + strlen(PBX_CHAT_GROUP_PREFIX) + 1);
unsigned int selectedGroup = 1;
strcpy(roomNameTemplate, roomName);
strcat(roomNameTemplate, PBX_CHAT_GROUP_PREFIX);
cc_mutex_lock(&chat_lock);
for (currentRoom = chat_list, selectedGroup = 1; currentRoom != 0; currentRoom = currentRoom->next) {
if ((currentRoom->group >= selectedGroup) &&
(strlen(roomNameTemplate) < strlen(currentRoom->name)) &&
(memcmp(currentRoom->name, roomNameTemplate, strlen(roomNameTemplate)) == 0) &&
((unsigned int)atoi(&currentRoom->name[strlen(roomNameTemplate)]) == currentRoom->group)) {
selectedGroup = currentRoom->group;
}
}
cc_mutex_unlock(&chat_lock);
return (selectedGroup+1);
}
static void pbx_capi_chat_enter_bridge_modify_state(void)
{
cc_mutex_lock(&chat_bridge_lock);
while (pbx_capi_bridge_modify_state != 0) {
ast_cond_wait(&pbx_capi_bridge_modify_event, &chat_bridge_lock);
}
pbx_capi_bridge_modify_state = 1;
cc_mutex_unlock(&chat_bridge_lock);
}
static void pbx_capi_chat_leave_bridge_modify_state(void)
{
cc_mutex_lock(&chat_bridge_lock);
pbx_capi_bridge_modify_state = 0;
ast_cond_signal(&pbx_capi_bridge_modify_event);
cc_mutex_unlock(&chat_bridge_lock);
}
/*
\brief Find the group where the new member can be attached to, create group if not found
\note groups are not sparse, group 1 is the root
*/
static unsigned int pbx_capi_find_group (const char* roomName,
unsigned long long controllers,
int requiredController) {
char* roomNameTemplate = alloca(strlen(roomName) + strlen(PBX_CHAT_GROUP_PREFIX) + 1);
unsigned int selectedGroup = 0, i;
strcpy(roomNameTemplate, roomName);
strcat(roomNameTemplate, PBX_CHAT_GROUP_PREFIX);
for (i = 2;;i++) {
unsigned int maxChannels = PBX_CHAT_MAX_GROUP_MEMBERS_PRI;
int groupController = -1;
unsigned int v = pbx_capi_chat_get_group_member_count(roomName, i, &groupController);
if (v == 0)
break;
if ((requiredController > 0) && (groupController != requiredController))
continue;
if (groupController > 0) {
const struct cc_capi_controller *c = pbx_capi_get_controller(groupController);
if (c != 0 && c->nbchannels == 2) {
maxChannels = PBX_CHAT_MAX_GROUP_MEMBERS_BRI;
}
}
if (v < maxChannels) {
selectedGroup = i;
break;
}
}
if (selectedGroup == 0) {
/* Create new group */
int controller = pbx_capi_chat_get_group_controller(roomName, 1);
unsigned long long mainController = controllers;
selectedGroup = pbx_capi_chat_find_free_group (roomName);
if (controller > 0) {
mainController = (1LU << (controller - 1));
}
if (requiredController > 0) {
controllers = (1LU << (requiredController - 1));
}
if (pbx_capi_create_conference_bridge(roomName, mainController, 1, roomName, controllers, selectedGroup) == NULL)
return 0;
}
return selectedGroup;
}
/*
\brief Return responsible for group bridge
*/
static struct capichat_s* pbx_capi_get_group_bridge(const char* roomName, unsigned int groupNumber)
{
struct capichat_s *currentRoom;
char* roomNameTemplate = alloca(strlen(roomName) + strlen(PBX_CHAT_GROUP_PREFIX) + 1);
size_t roomNameTemplateLen;
strcpy(roomNameTemplate, roomName);
strcat(roomNameTemplate, PBX_CHAT_GROUP_PREFIX);
roomNameTemplateLen = strlen(roomNameTemplate);
for (currentRoom = chat_list; currentRoom != 0; currentRoom = currentRoom->next) {
if ((currentRoom->group == groupNumber) && (currentRoom->i != NULL) &&
(roomNameTemplateLen < strlen(currentRoom->name)) &&
(memcmp(currentRoom->name, roomNameTemplate, roomNameTemplateLen) == 0) &&
((unsigned int)atoi(&currentRoom->name[roomNameTemplateLen]) == currentRoom->group) &&
(currentRoom->i->used == NULL) && (currentRoom->i->bridgePeer != NULL)) {
return currentRoom;
}
}
return NULL;
}
/*!
\brief Returns true if bridge is idle
*/
static int pbx_capi_is_bridge_idle(const char* roomName)
{
struct capichat_s *currentRoom;
char* roomNameTemplate = alloca(strlen(roomName) + strlen(PBX_CHAT_GROUP_PREFIX) + 1);
size_t roomNameTemplateLen;
int bridgeIdle;
strcpy(roomNameTemplate, roomName);
strcat(roomNameTemplate, PBX_CHAT_GROUP_PREFIX);
roomNameTemplateLen = strlen(roomNameTemplate);
cc_mutex_lock(&chat_lock);
for (currentRoom = chat_list, bridgeIdle = 1;
((bridgeIdle != 0) && (currentRoom != 0));
currentRoom = currentRoom->next) {
if ((currentRoom->group > 1) && (currentRoom->groupUsers != 0) && (currentRoom->i != NULL) &&
(roomNameTemplateLen < strlen(currentRoom->name)) &&
(memcmp(currentRoom->name, roomNameTemplate, roomNameTemplateLen) == 0) &&
((unsigned int)atoi(&currentRoom->name[roomNameTemplateLen]) == currentRoom->group) &&
(currentRoom->i->used == NULL) && (currentRoom->i->bridgePeer != NULL)) {
bridgeIdle = 0;
}
}
cc_mutex_unlock(&chat_lock);
return bridgeIdle;
}
static struct capichat_s* pbx_capi_get_room_bridge(const char* roomName)
{
struct capichat_s *currentRoom;
char* roomNameTemplate = alloca(strlen(roomName) + strlen(PBX_CHAT_GROUP_PREFIX) + 1);
size_t roomNameTemplateLen;
strcpy(roomNameTemplate, roomName);
strcat(roomNameTemplate, PBX_CHAT_GROUP_PREFIX);
roomNameTemplateLen = strlen(roomNameTemplate);
cc_mutex_lock(&chat_lock);
for (currentRoom = chat_list; currentRoom != 0; currentRoom = currentRoom->next) {
if ((currentRoom->group > 1) && (currentRoom->i != NULL) &&
(roomNameTemplateLen < strlen(currentRoom->name)) &&
(memcmp(currentRoom->name, roomNameTemplate, roomNameTemplateLen) == 0) &&
((unsigned int)atoi(&currentRoom->name[roomNameTemplateLen]) == currentRoom->group) &&
(currentRoom->i->used == NULL) && (currentRoom->i->bridgePeer != NULL)) {
break;
}
}
cc_mutex_unlock(&chat_lock);
return currentRoom;
}
static struct capichat_s* pbx_capi_get_group_main_bridge(struct capi_pvt* mainPLCI)
{
struct capichat_s *currentRoom = NULL;
cc_mutex_lock(&chat_lock);
for (currentRoom = chat_list; currentRoom != 0; currentRoom = currentRoom->next) {
if (currentRoom->i == mainPLCI) {
break;
}
}
cc_mutex_unlock(&chat_lock);
return currentRoom;
}
static unsigned int pbx_capi_add_group_user(const char* roomName, unsigned int groupNumber)
{
struct capichat_s* groupBridge;
unsigned int ret = 0;
cc_mutex_lock(&chat_lock);
groupBridge = pbx_capi_get_group_bridge(roomName, groupNumber);
if (groupBridge != NULL) {
groupBridge->groupUsers++;
ret = groupBridge->groupUsers;
{
size_t mainFullNameLength = pbx_capi_create_full_room_name(roomName, 1, NULL, 0);
size_t additionalFullNameLength = pbx_capi_create_full_room_name(roomName, groupNumber, NULL, 0);
char* mainFullName = alloca(mainFullNameLength);
char* additionalFullName = alloca(additionalFullNameLength);
pbx_capi_create_full_room_name(roomName, 1, mainFullName, mainFullNameLength);
pbx_capi_create_full_room_name(roomName, groupNumber, additionalFullName, additionalFullNameLength);
cc_verbose(2, 0, VERBOSE_PREFIX_2 CC_MESSAGE_NAME
" Add bridge user (%u) '%s' <-> '%s'\n", ret, mainFullName, additionalFullName);
}
}
cc_mutex_unlock(&chat_lock);
return ret;
}
static unsigned int pbx_capi_remove_group_user(const char* roomName, unsigned int groupNumber)
{
struct capichat_s* groupBridge;
unsigned int ret = 0;
cc_mutex_lock(&chat_lock);
groupBridge = pbx_capi_get_group_bridge(roomName, groupNumber);
if (groupBridge != NULL) {
if (groupBridge->groupUsers != 0) {
groupBridge->groupUsers--;
}
ret = groupBridge->groupUsers;
}
cc_mutex_unlock(&chat_lock);
return ret;
}
/*!
\brief Clean up bridge if no members are left in the group
*/
static void pbx_capi_cleanup_bridge(const char* roomName, unsigned int groupNumber)
{
int bridgeUsers;
if (groupNumber != 0) {
size_t mainFullNameLength = pbx_capi_create_full_room_name(roomName, 1, NULL, 0);
size_t additionalFullNameLength = pbx_capi_create_full_room_name(roomName, groupNumber, NULL, 0);
char* mainFullName = alloca(mainFullNameLength);
char* additionalFullName = alloca(additionalFullNameLength);
pbx_capi_create_full_room_name(roomName, 1, mainFullName, mainFullNameLength);
pbx_capi_create_full_room_name(roomName, groupNumber, additionalFullName, additionalFullNameLength);
pbx_capi_chat_enter_bridge_modify_state();
bridgeUsers = pbx_capi_remove_group_user(roomName, groupNumber);
cc_verbose(2, 0, VERBOSE_PREFIX_2 CC_MESSAGE_NAME
" Delete bridge user (%u) '%s' <-> '%s'\n", bridgeUsers, mainFullName, additionalFullName);
if (bridgeUsers == 0) {
/*
Delecte bridge between conference room groups.
To reduce the load at the central bridge while the conference running
the bridge is remoced only if all bridges are in idle state
*/
if (pbx_capi_is_bridge_idle(roomName) != 0) {
struct capichat_s* additionalGroup;
while ((additionalGroup = pbx_capi_get_room_bridge(roomName)) != 0) {
struct capichat_s* mainGroup = pbx_capi_get_group_main_bridge(additionalGroup->i->bridgePeer);
struct capi_pvt *mainPLCI = mainGroup->i, *additionalPLCI = additionalGroup->i;
pbx_capi_create_full_room_name(roomName, additionalGroup->group, additionalFullName, additionalFullNameLength);
cc_verbose(2, 0, VERBOSE_PREFIX_2 CC_MESSAGE_NAME
" Delete bridge '%s' <-> '%s'\n", mainFullName, additionalFullName);
del_chat_member(additionalGroup, 1);
del_chat_member(mainGroup, 1);
#ifdef DIVA_STREAMING
capi_DivaStreamLock();
#endif
cc_mutex_lock(&mainPLCI->lock);
cc_mutex_lock(&additionalPLCI->lock);
mainPLCI->bridgePeer = NULL;
additionalPLCI->bridgePeer = NULL;
cc_mutex_unlock(&additionalPLCI->lock);
cc_mutex_unlock(&mainPLCI->lock);
#ifdef DIVA_STREAMING
capi_DivaStreamUnLock();
#endif
capi_remove_nullif(mainPLCI);
capi_remove_nullif(additionalPLCI);
}
}
}
pbx_capi_chat_leave_bridge_modify_state();
}
}
void pbx_capi_chat_init_module(void)
{
ast_cond_init(&pbx_capi_bridge_modify_event, NULL);
}
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