2145 lines
55 KiB
C
2145 lines
55 KiB
C
/*****************************************************************************\
|
||
** **
|
||
** Linux Call Router **
|
||
** **
|
||
**---------------------------------------------------------------------------**
|
||
** Copyright: Andreas Eversberg **
|
||
** **
|
||
** Asterisk socket client **
|
||
** **
|
||
\*****************************************************************************/
|
||
|
||
/*
|
||
|
||
Registering to LCR:
|
||
|
||
To connect, open an LCR socket and send a MESSAGE_HELLO to socket with
|
||
the application name. This name is unique an can be used for routing calls.
|
||
Now the channel driver is linked to LCR and can receive and make calls.
|
||
|
||
|
||
Call is initiated by LCR:
|
||
|
||
If a call is received from LCR, a MESSAGE_NEWREF is received first.
|
||
A new chan_call instance is created. The call reference (ref) is given by
|
||
MESSAGE_NEWREF. The state is CHAN_LCR_STATE_IN_PREPARE.
|
||
After receiving MESSAGE_SETUP from LCR, the ast_channel instance is created
|
||
using ast_channel_alloc(1). The setup information is given to asterisk.
|
||
The new Asterisk instance pointer (ast) is stored to chan_call structure.
|
||
The state changes to CHAN_LCR_STATE_IN_SETUP.
|
||
|
||
|
||
Call is initiated by Asterisk:
|
||
|
||
If a call is requested from Asterisk, a new chan_call instance is created.
|
||
The new Asterisk instance pointer (ast) is stored to chan_call structure.
|
||
The current call ref is set to 0, the state is CHAN_LCR_STATE_OUT_PREPARE.
|
||
If the call is received (lcr_call) A MESSASGE_NEWREF is sent to LCR requesting
|
||
a new call reference (ref).
|
||
Further dialing information is queued.
|
||
After the new callref is received by special MESSAGE_NEWREF reply, new ref
|
||
is stored in the chan_call structure.
|
||
The setup information is sent to LCR using MESSAGE_SETUP.
|
||
The state changes to CHAN_LCR_STATE_OUT_SETUP.
|
||
|
||
|
||
Call is in process:
|
||
|
||
During call process, messages are received and sent.
|
||
The state changes accordingly.
|
||
Any message is allowed to be sent to LCR at any time except MESSAGE_RELEASE.
|
||
If a MESSAGE_OVERLAP is received, further dialing is required.
|
||
Queued dialing information, if any, is sent to LCR using MESSAGE_DIALING.
|
||
In this case, the state changes to CHAN_LCR_STATE_OUT_DIALING.
|
||
|
||
|
||
Call is released by LCR:
|
||
|
||
A MESSAGE_RELEASE is received with the call reference (ref) to be released.
|
||
The current ref is set to 0, to indicate released reference.
|
||
The state changes to CHAN_LCR_STATE_RELEASE.
|
||
ast_queue_hangup() is called, if asterisk instance (ast) exists, if not,
|
||
the chan_call instance is destroyed.
|
||
After lcr_hangup() is called-back by Asterisk, the chan_call instance
|
||
is destroyed, because the current ref is set to 0 and the state equals
|
||
CHAN_LCR_STATE_RELEASE.
|
||
If the ref is 0 and the state is not CHAN_LCR_STATE_RELEASE, see the proceedure
|
||
"Call is released by Asterisk".
|
||
|
||
|
||
Call is released by Asterisk:
|
||
|
||
lcr_hangup() is called-back by Asterisk. If the call reference (ref) is set,
|
||
a MESSAGE_RELEASE is sent to LCR and the chan_call instance is destroyed.
|
||
If the ref is 0 and the state is not CHAN_LCR_STATE_RELEASE, the new state is
|
||
set to CHAN_LCR_STATE_RELEASE.
|
||
Later, if the MESSAGE_NEWREF reply is received, a MESSAGE_RELEASE is sent to
|
||
LCR and the chan_call instance is destroyed.
|
||
If the ref is 0 and the state is CHAN_LCR_STATE_RELEASE, see the proceedure
|
||
"Call is released by LCR".
|
||
|
||
*/
|
||
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <stdarg.h>
|
||
#include <errno.h>
|
||
#include <sys/types.h>
|
||
#include <time.h>
|
||
//#include <signal.h>
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#include <unistd.h>
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#include <fcntl.h>
|
||
#include <sys/ioctl.h>
|
||
#include <sys/socket.h>
|
||
#include <sys/un.h>
|
||
|
||
#include <semaphore.h>
|
||
|
||
#include <asterisk/module.h>
|
||
#include <asterisk/channel.h>
|
||
#include <asterisk/config.h>
|
||
#include <asterisk/logger.h>
|
||
#include <asterisk/pbx.h>
|
||
#include <asterisk/options.h>
|
||
#include <asterisk/io.h>
|
||
#include <asterisk/frame.h>
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||
#include <asterisk/translate.h>
|
||
#include <asterisk/cli.h>
|
||
#include <asterisk/musiconhold.h>
|
||
#include <asterisk/dsp.h>
|
||
#include <asterisk/translate.h>
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||
#include <asterisk/file.h>
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||
#include <asterisk/callerid.h>
|
||
#include <asterisk/indications.h>
|
||
#include <asterisk/app.h>
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||
#include <asterisk/features.h>
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||
#include <asterisk/sched.h>
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||
|
||
#include "extension.h"
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||
#include "message.h"
|
||
#include "callerid.h"
|
||
#include "lcrsocket.h"
|
||
#include "cause.h"
|
||
#include "bchannel.h"
|
||
#include "options.h"
|
||
#include "chan_lcr.h"
|
||
|
||
CHAN_LCR_STATE // state description structure
|
||
MESSAGES // message text
|
||
|
||
unsigned char flip_bits[256];
|
||
|
||
int lcr_debug=1;
|
||
int mISDN_created=1;
|
||
|
||
char lcr_type[]="lcr";
|
||
|
||
pthread_t chan_tid;
|
||
ast_mutex_t chan_lock; /* global lock */
|
||
ast_mutex_t log_lock; /* logging log */
|
||
int quit;
|
||
|
||
int glob_channel = 0;
|
||
|
||
int lcr_sock = -1;
|
||
|
||
struct admin_list {
|
||
struct admin_list *next;
|
||
struct admin_message msg;
|
||
} *admin_first = NULL;
|
||
|
||
static struct ast_channel_tech lcr_tech;
|
||
|
||
/*
|
||
* logging
|
||
*/
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||
void chan_lcr_log(int type, const char *file, int line, const char *function, struct chan_call *call, struct ast_channel *ast, const char *fmt, ...)
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||
{
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||
char buffer[1024];
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||
char call_text[128] = "NULL";
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||
char ast_text[128] = "NULL";
|
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va_list args;
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||
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ast_mutex_lock(&log_lock);
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va_start(args,fmt);
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vsnprintf(buffer,sizeof(buffer)-1,fmt,args);
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buffer[sizeof(buffer)-1]=0;
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va_end(args);
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||
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if (call)
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sprintf(call_text, "%ld", call->ref);
|
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if (ast)
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||
strncpy(ast_text, ast->name, sizeof(ast_text)-1);
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||
ast_text[sizeof(ast_text)-1] = '\0';
|
||
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||
ast_log(type, file, line, function, "[call=%s ast=%s] %s", call_text, ast_text, buffer);
|
||
|
||
ast_mutex_unlock(&log_lock);
|
||
}
|
||
|
||
/*
|
||
* channel and call instances
|
||
*/
|
||
struct chan_call *call_first;
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||
|
||
struct chan_call *find_call_ref(unsigned long ref)
|
||
{
|
||
struct chan_call *call = call_first;
|
||
|
||
while(call)
|
||
{
|
||
if (call->ref == ref)
|
||
break;
|
||
call = call->next;
|
||
}
|
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return(call);
|
||
}
|
||
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#if 0
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struct chan_call *find_call_ast(struct ast_channel *ast)
|
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{
|
||
struct chan_call *call = call_first;
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||
|
||
while(call)
|
||
{
|
||
if (call->ast == ast)
|
||
break;
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||
call = call->next;
|
||
}
|
||
return(call);
|
||
}
|
||
|
||
struct chan_call *find_call_handle(unsigned long handle)
|
||
{
|
||
struct chan_call *call = call_first;
|
||
|
||
while(call)
|
||
{
|
||
if (call->bchannel_handle == handle)
|
||
break;
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||
call = call->next;
|
||
}
|
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return(call);
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||
}
|
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#endif
|
||
|
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void free_call(struct chan_call *call)
|
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{
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struct chan_call **temp = &call_first;
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||
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while(*temp)
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{
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if (*temp == call)
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{
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*temp = (*temp)->next;
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if (call->pipe[0] > -1)
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close(call->pipe[0]);
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if (call->pipe[1] > -1)
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close(call->pipe[1]);
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if (call->bchannel)
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{
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if (call->bchannel->call != call)
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CERROR(call, NULL, "Linked bchannel structure has no link to us.\n");
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call->bchannel->call = NULL;
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}
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if (call->bridge_call)
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{
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if (call->bridge_call->bridge_call != call)
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CERROR(call, NULL, "Linked call structure has no link to us.\n");
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||
call->bridge_call->bridge_call = NULL;
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}
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CDEBUG(call, NULL, "Call instance freed.\n");
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free(call);
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return;
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}
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temp = &((*temp)->next);
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}
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CERROR(call, NULL, "Call instance not found in list.\n");
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}
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struct chan_call *alloc_call(void)
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{
|
||
struct chan_call **callp = &call_first;
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while(*callp)
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callp = &((*callp)->next);
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*callp = (struct chan_call *)calloc(1, sizeof(struct chan_call));
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if (*callp)
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memset(*callp, 0, sizeof(struct chan_call));
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if (pipe((*callp)->pipe) < 0) {
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||
CERROR(*callp, NULL, "Failed to create pipe.\n");
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free_call(*callp);
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return(NULL);
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}
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CDEBUG(*callp, NULL, "Call instance allocated.\n");
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return(*callp);
|
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}
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unsigned short new_bridge_id(void)
|
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{
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struct chan_call *call;
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unsigned short id = 1;
|
||
|
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/* search for lowest bridge id that is not in use and not 0 */
|
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while(id)
|
||
{
|
||
call = call_first;
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while(call)
|
||
{
|
||
if (call->bridge_id == id)
|
||
break;
|
||
call = call->next;
|
||
}
|
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if (!call)
|
||
break;
|
||
id++;
|
||
}
|
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CDEBUG(NULL, NULL, "New bridge ID %d.\n", id);
|
||
return(id);
|
||
}
|
||
|
||
|
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/*
|
||
* enque message to LCR
|
||
*/
|
||
int send_message(int message_type, unsigned long ref, union parameter *param)
|
||
{
|
||
struct admin_list *admin, **adminp;
|
||
|
||
if (lcr_sock < 0) {
|
||
CDEBUG(NULL, NULL, "Ignoring message %d, because socket is closed.\n", message_type);
|
||
return -1;
|
||
}
|
||
CDEBUG(NULL, NULL, "Sending %s to socket.\n", messages_txt[message_type]);
|
||
|
||
adminp = &admin_first;
|
||
while(*adminp)
|
||
adminp = &((*adminp)->next);
|
||
admin = (struct admin_list *)calloc(1, sizeof(struct admin_list));
|
||
if (!admin) {
|
||
CERROR(NULL, NULL, "No memory for message to LCR.\n");
|
||
return -1;
|
||
}
|
||
*adminp = admin;
|
||
|
||
admin->msg.message = ADMIN_MESSAGE;
|
||
admin->msg.u.msg.type = message_type;
|
||
admin->msg.u.msg.ref = ref;
|
||
memcpy(&admin->msg.u.msg.param, param, sizeof(union parameter));
|
||
|
||
return(0);
|
||
}
|
||
|
||
/*
|
||
* send setup info to LCR
|
||
* this function is called, when asterisk call is received and ref is received
|
||
*/
|
||
static void send_setup_to_lcr(struct chan_call *call)
|
||
{
|
||
union parameter newparam;
|
||
struct ast_channel *ast = call->ast;
|
||
|
||
if (!call->ast || !call->ref)
|
||
return;
|
||
|
||
CDEBUG(call, call->ast, "Sending setup to LCR. (interface=%s dialstring=%s)\n", call->interface, call->dialstring);
|
||
|
||
/* send setup message to LCR */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.setup.dialinginfo.itype = INFO_ITYPE_ISDN;
|
||
newparam.setup.dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
|
||
strncpy(newparam.setup.dialinginfo.id, call->dialstring, sizeof(newparam.setup.dialinginfo.id)-1);
|
||
strncpy(newparam.setup.dialinginfo.interfaces, call->interface, sizeof(newparam.setup.dialinginfo.interfaces)-1);
|
||
newparam.setup.callerinfo.itype = INFO_ITYPE_CHAN;
|
||
newparam.setup.callerinfo.ntype = INFO_NTYPE_UNKNOWN;
|
||
if (ast->cid.cid_num) if (ast->cid.cid_num[0])
|
||
strncpy(newparam.setup.callerinfo.id, ast->cid.cid_num, sizeof(newparam.setup.callerinfo.id)-1);
|
||
if (ast->cid.cid_name) if (ast->cid.cid_name[0])
|
||
strncpy(newparam.setup.callerinfo.name, ast->cid.cid_name, sizeof(newparam.setup.callerinfo.name)-1);
|
||
if (ast->cid.cid_rdnis) if (ast->cid.cid_rdnis[0])
|
||
{
|
||
strncpy(newparam.setup.redirinfo.id, ast->cid.cid_rdnis, sizeof(newparam.setup.redirinfo.id)-1);
|
||
newparam.setup.redirinfo.itype = INFO_ITYPE_CHAN;
|
||
newparam.setup.redirinfo.ntype = INFO_NTYPE_UNKNOWN;
|
||
}
|
||
switch(ast->cid.cid_pres & AST_PRES_RESTRICTION)
|
||
{
|
||
case AST_PRES_ALLOWED:
|
||
newparam.setup.callerinfo.present = INFO_PRESENT_ALLOWED;
|
||
break;
|
||
case AST_PRES_RESTRICTED:
|
||
newparam.setup.callerinfo.present = INFO_PRESENT_RESTRICTED;
|
||
break;
|
||
case AST_PRES_UNAVAILABLE:
|
||
newparam.setup.callerinfo.present = INFO_PRESENT_NOTAVAIL;
|
||
break;
|
||
default:
|
||
newparam.setup.callerinfo.present = INFO_PRESENT_NULL;
|
||
}
|
||
switch(ast->cid.cid_ton)
|
||
{
|
||
case 4:
|
||
newparam.setup.callerinfo.ntype = INFO_NTYPE_SUBSCRIBER;
|
||
break;
|
||
case 2:
|
||
newparam.setup.callerinfo.ntype = INFO_NTYPE_NATIONAL;
|
||
break;
|
||
case 1:
|
||
newparam.setup.callerinfo.ntype = INFO_NTYPE_INTERNATIONAL;
|
||
break;
|
||
default:
|
||
newparam.setup.callerinfo.ntype = INFO_NTYPE_UNKNOWN;
|
||
}
|
||
newparam.setup.capainfo.bearer_capa = ast->transfercapability;
|
||
newparam.setup.capainfo.bearer_info1 = (options.law=='a')?3:2;
|
||
newparam.setup.capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
|
||
newparam.setup.capainfo.hlc = INFO_HLC_NONE;
|
||
newparam.setup.capainfo.exthlc = INFO_HLC_NONE;
|
||
send_message(MESSAGE_SETUP, call->ref, &newparam);
|
||
|
||
/* change to outgoing setup state */
|
||
call->state = CHAN_LCR_STATE_OUT_SETUP;
|
||
}
|
||
|
||
/*
|
||
* send dialing info to LCR
|
||
* this function is called, when setup acknowledge is received and dialing
|
||
* info is available.
|
||
*/
|
||
static void send_dialque_to_lcr(struct chan_call *call)
|
||
{
|
||
union parameter newparam;
|
||
|
||
if (!call->ast || !call->ref || !call->dialque[0])
|
||
return;
|
||
|
||
CDEBUG(call, call->ast, "Sending dial queue to LCR. (dialing=%s)\n", call->dialque);
|
||
|
||
/* send setup message to LCR */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
strncpy(newparam.information.id, call->dialque, sizeof(newparam.information.id)-1);
|
||
call->dialque[0] = '\0';
|
||
send_message(MESSAGE_INFORMATION, call->ref, &newparam);
|
||
}
|
||
|
||
/*
|
||
* in case of a bridge, the unsupported message can be forwarded directly
|
||
* to the remote call.
|
||
*/
|
||
static void bridge_message_if_bridged(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
/* check bridge */
|
||
if (!call) return;
|
||
if (!call->bridge_call) return;
|
||
CDEBUG(call, NULL, "Sending message due briding.\n");
|
||
send_message(message_type, call->bridge_call->ref, param);
|
||
}
|
||
|
||
/*
|
||
* send release message to LCR and import bchannel if exported
|
||
*/
|
||
static void send_release_and_import(struct chan_call *call, int cause, int location)
|
||
{
|
||
union parameter newparam;
|
||
|
||
/* importing channel */
|
||
if (call->bchannel) {
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.bchannel.type = BCHANNEL_RELEASE;
|
||
newparam.bchannel.handle = call->bchannel->handle;
|
||
send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
|
||
}
|
||
/* sending release */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.disconnectinfo.cause = cause;
|
||
newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
|
||
send_message(MESSAGE_RELEASE, call->ref, &newparam);
|
||
}
|
||
|
||
/*
|
||
* check if extension matches and start asterisk
|
||
* if it can match, proceed
|
||
* if not, release
|
||
*/
|
||
static void lcr_start_pbx(struct chan_call *call, struct ast_channel *ast, int complete)
|
||
{
|
||
int cause, ret;
|
||
union parameter newparam;
|
||
|
||
CDEBUG(call, ast, "Try to start pbx. (exten=%s context=%s complete=%s)\n", ast->exten, ast->context, complete?"yes":"no");
|
||
|
||
if (complete)
|
||
{
|
||
/* if not match */
|
||
if (!ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
|
||
{
|
||
CDEBUG(call, ast, "Got 'sending complete', but extension '%s' will not match at context '%s' - releasing.\n", ast->exten, ast->context);
|
||
cause = 1;
|
||
goto release;
|
||
}
|
||
if (!ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad))
|
||
{
|
||
CDEBUG(call, ast, "Got 'sending complete', but extension '%s' would match at context '%s', if more digits would be dialed - releasing.\n", ast->exten, ast->context);
|
||
cause = 28;
|
||
goto release;
|
||
}
|
||
CDEBUG(call, ast, "Got 'sending complete', extensions matches.\n");
|
||
/* send setup acknowledge to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
send_message(MESSAGE_PROCEEDING, call->ref, &newparam);
|
||
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_IN_PROCEEDING;
|
||
|
||
goto start;
|
||
}
|
||
|
||
if (ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
|
||
{
|
||
/* send setup acknowledge to lcr */
|
||
if (call->state != CHAN_LCR_STATE_IN_DIALING) {
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
send_message(MESSAGE_OVERLAP, call->ref, &newparam);
|
||
}
|
||
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_IN_DIALING;
|
||
|
||
/* if match, start pbx */
|
||
if (ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad)) {
|
||
CDEBUG(call, ast, "Extensions matches.\n");
|
||
goto start;
|
||
}
|
||
|
||
/* if can match */
|
||
CDEBUG(call, ast, "Extensions may match, if more digits are dialed.\n");
|
||
return;
|
||
}
|
||
|
||
/* if not match */
|
||
cause = 1;
|
||
release:
|
||
/* release lcr */
|
||
CDEBUG(call, ast, "Releasing due to extension missmatch.\n");
|
||
send_release_and_import(call, cause, LOCATION_PRIVATE_LOCAL);
|
||
call->ref = 0;
|
||
/* release asterisk */
|
||
ast->hangupcause = call->cause;
|
||
/* change to release state */
|
||
call->state = CHAN_LCR_STATE_RELEASE;
|
||
ast_hangup(ast); // call will be destroyed here
|
||
return;
|
||
|
||
start:
|
||
/* send setup to asterisk */
|
||
CDEBUG(call, ast, "Starting call to Asterisk due to matching extension.\n");
|
||
ret = ast_pbx_start(ast);
|
||
if (ret < 0)
|
||
{
|
||
cause = (ret==-2)?34:27;
|
||
goto release;
|
||
}
|
||
call->pbx_started = 1;
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* incoming setup from LCR
|
||
*/
|
||
static void lcr_in_setup(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
struct ast_channel *ast;
|
||
|
||
CDEBUG(call, NULL, "Incomming setup from LCR. (callerid %s, dialing %s)\n", param->setup.callerinfo.id, param->setup.dialinginfo.id);
|
||
|
||
/* create asterisk channel instrance */
|
||
ast = ast_channel_alloc(1, AST_STATE_RESERVED, NULL, NULL, "", NULL, "", 0, "%s/%d", lcr_type, ++glob_channel);
|
||
if (!ast)
|
||
{
|
||
/* release */
|
||
CERROR(call, NULL, "Failed to create Asterisk channel - releasing.\n");
|
||
send_release_and_import(call, CAUSE_RESSOURCEUNAVAIL, LOCATION_PRIVATE_LOCAL);
|
||
/* remove call */
|
||
free_call(call);
|
||
return;
|
||
}
|
||
/* link together */
|
||
call->ast = ast;
|
||
ast->tech_pvt = call;
|
||
ast->tech = &lcr_tech;
|
||
ast->fds[0] = call->pipe[0];
|
||
|
||
/* fill setup information */
|
||
if (param->setup.dialinginfo.id)
|
||
strncpy(ast->exten, param->setup.dialinginfo.id, AST_MAX_EXTENSION-1);
|
||
if (param->setup.context[0])
|
||
strncpy(ast->context, param->setup.context, AST_MAX_CONTEXT-1);
|
||
else
|
||
strncpy(ast->context, param->setup.callerinfo.interface, AST_MAX_CONTEXT-1);
|
||
if (param->setup.callerinfo.id[0])
|
||
ast->cid.cid_num = strdup(param->setup.callerinfo.id);
|
||
if (param->setup.callerinfo.name[0])
|
||
ast->cid.cid_name = strdup(param->setup.callerinfo.name);
|
||
if (param->setup.redirinfo.id[0])
|
||
ast->cid.cid_name = strdup(numberrize_callerinfo(param->setup.callerinfo.id, param->setup.callerinfo.ntype, options.national, options.international));
|
||
switch (param->setup.callerinfo.present)
|
||
{
|
||
case INFO_PRESENT_ALLOWED:
|
||
ast->cid.cid_pres = AST_PRES_ALLOWED;
|
||
break;
|
||
case INFO_PRESENT_RESTRICTED:
|
||
ast->cid.cid_pres = AST_PRES_RESTRICTED;
|
||
break;
|
||
default:
|
||
ast->cid.cid_pres = AST_PRES_UNAVAILABLE;
|
||
}
|
||
switch (param->setup.callerinfo.ntype)
|
||
{
|
||
case INFO_NTYPE_SUBSCRIBER:
|
||
ast->cid.cid_ton = 4;
|
||
break;
|
||
case INFO_NTYPE_NATIONAL:
|
||
ast->cid.cid_ton = 2;
|
||
break;
|
||
case INFO_NTYPE_INTERNATIONAL:
|
||
ast->cid.cid_ton = 1;
|
||
break;
|
||
default:
|
||
ast->cid.cid_ton = 0;
|
||
}
|
||
ast->transfercapability = param->setup.capainfo.bearer_capa;
|
||
strncpy(call->oad, numberrize_callerinfo(param->setup.callerinfo.id, param->setup.callerinfo.ntype, options.national, options.international), sizeof(call->oad)-1);
|
||
|
||
/* configure channel */
|
||
ast->nativeformats = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
|
||
ast->readformat = ast->rawreadformat = ast->nativeformats;
|
||
ast->writeformat = ast->rawwriteformat = ast->nativeformats;
|
||
ast->priority = 1;
|
||
ast->hangupcause = 0;
|
||
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_IN_SETUP;
|
||
|
||
lcr_start_pbx(call, ast, param->setup.dialinginfo.sending_complete);
|
||
}
|
||
|
||
/*
|
||
* incoming setup acknowledge from LCR
|
||
*/
|
||
static void lcr_in_overlap(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
if (!call->ast) return;
|
||
|
||
CDEBUG(call, call->ast, "Incomming setup acknowledge from LCR.\n");
|
||
|
||
/* send pending digits in dialque */
|
||
if (call->dialque[0])
|
||
send_dialque_to_lcr(call);
|
||
/* change to overlap state */
|
||
call->state = CHAN_LCR_STATE_OUT_DIALING;
|
||
}
|
||
|
||
/*
|
||
* incoming proceeding from LCR
|
||
*/
|
||
static void lcr_in_proceeding(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
CDEBUG(call, call->ast, "Incomming proceeding from LCR.\n");
|
||
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_OUT_PROCEEDING;
|
||
/* send event to asterisk */
|
||
if (call->ast && call->pbx_started)
|
||
ast_queue_control(call->ast, AST_CONTROL_PROCEEDING);
|
||
}
|
||
|
||
/*
|
||
* incoming alerting from LCR
|
||
*/
|
||
static void lcr_in_alerting(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
CDEBUG(call, call->ast, "Incomming alerting from LCR.\n");
|
||
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_OUT_ALERTING;
|
||
/* send event to asterisk */
|
||
if (call->ast && call->pbx_started)
|
||
ast_queue_control(call->ast, AST_CONTROL_RINGING);
|
||
}
|
||
|
||
/*
|
||
* incoming connect from LCR
|
||
*/
|
||
static void lcr_in_connect(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
union parameter newparam;
|
||
|
||
CDEBUG(call, call->ast, "Incomming connect (answer) from LCR.\n");
|
||
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_CONNECT;
|
||
/* request bchannel */
|
||
if (!call->bchannel) {
|
||
CDEBUG(call, call->ast, "Requesting B-channel.\n");
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.bchannel.type = BCHANNEL_REQUEST;
|
||
send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
|
||
}
|
||
/* copy connectinfo */
|
||
memcpy(&call->connectinfo, ¶m->connectinfo, sizeof(struct connect_info));
|
||
/* send event to asterisk */
|
||
if (call->ast && call->pbx_started)
|
||
ast_queue_control(call->ast, AST_CONTROL_ANSWER);
|
||
}
|
||
|
||
/*
|
||
* incoming disconnect from LCR
|
||
*/
|
||
static void lcr_in_disconnect(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
struct ast_channel *ast = call->ast;
|
||
|
||
CDEBUG(call, call->ast, "Incomming disconnect from LCR. (cause=%d)\n", param->disconnectinfo.cause);
|
||
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_IN_DISCONNECT;
|
||
/* save cause */
|
||
call->cause = param->disconnectinfo.cause;
|
||
call->location = param->disconnectinfo.location;
|
||
/* if bridge, forward disconnect and return */
|
||
#ifdef TODO
|
||
feature flag
|
||
if (call->bridge_call)
|
||
{
|
||
CDEBUG(call, call->ast, "Only signal disconnect via bridge.\n");
|
||
bridge_message_if_bridged(call, message_type, param);
|
||
return;
|
||
}
|
||
#endif
|
||
/* release lcr with same cause */
|
||
send_release_and_import(call, call->cause, call->location);
|
||
call->ref = 0;
|
||
/* change to release state */
|
||
call->state = CHAN_LCR_STATE_RELEASE;
|
||
/* release asterisk */
|
||
if (ast)
|
||
{
|
||
ast->hangupcause = call->cause;
|
||
if (call->pbx_started)
|
||
ast_queue_hangup(ast);
|
||
else {
|
||
ast_hangup(ast); // call will be destroyed here
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* incoming setup acknowledge from LCR
|
||
*/
|
||
static void lcr_in_release(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
struct ast_channel *ast = call->ast;
|
||
|
||
CDEBUG(call, call->ast, "Incomming release from LCR, releasing ref. (cause=%d)\n", param->disconnectinfo.cause);
|
||
|
||
/* release ref */
|
||
call->ref = 0;
|
||
/* change to release state */
|
||
call->state = CHAN_LCR_STATE_RELEASE;
|
||
/* copy release info */
|
||
if (!call->cause)
|
||
{
|
||
call->cause = param->disconnectinfo.cause;
|
||
call->location = param->disconnectinfo.location;
|
||
}
|
||
/* if we have an asterisk instance, send hangup, else we are done */
|
||
if (ast)
|
||
{
|
||
ast->hangupcause = call->cause;
|
||
if (call->pbx_started)
|
||
ast_queue_hangup(ast);
|
||
else {
|
||
ast_hangup(ast); // call will be destroyed here
|
||
}
|
||
} else
|
||
{
|
||
free_call(call);
|
||
}
|
||
|
||
}
|
||
|
||
/*
|
||
* incoming information from LCR
|
||
*/
|
||
static void lcr_in_information(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
struct ast_channel *ast = call->ast;
|
||
struct ast_frame fr;
|
||
char *p;
|
||
|
||
CDEBUG(call, call->ast, "Incoming information from LCR. (dialing=%s)\n", param->information.id);
|
||
|
||
if (!ast) return;
|
||
|
||
/* pbx not started */
|
||
if (!call->pbx_started)
|
||
{
|
||
CDEBUG(call, call->ast, "Asterisk not started, adding digits to number.\n");
|
||
strncat(ast->exten, param->information.id, AST_MAX_EXTENSION-1);
|
||
lcr_start_pbx(call, ast, param->information.sending_complete);
|
||
return;
|
||
}
|
||
|
||
/* copy digits */
|
||
p = param->information.id;
|
||
if (call->state == CHAN_LCR_STATE_IN_DIALING && *p)
|
||
{
|
||
CDEBUG(call, call->ast, "Asterisk is started, sending DTMF frame.\n");
|
||
while (*p)
|
||
{
|
||
/* send digit to asterisk */
|
||
memset(&fr, 0, sizeof(fr));
|
||
fr.frametype = AST_FRAME_DTMF;
|
||
fr.subclass = *p;
|
||
fr.delivery = ast_tv(0, 0);
|
||
ast_queue_frame(call->ast, &fr);
|
||
p++;
|
||
}
|
||
}
|
||
/* use bridge to forware message not supported by asterisk */
|
||
if (call->state == CHAN_LCR_STATE_CONNECT) {
|
||
CDEBUG(call, call->ast, "Call is connected, briding.\n");
|
||
bridge_message_if_bridged(call, message_type, param);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* incoming information from LCR
|
||
*/
|
||
static void lcr_in_notify(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
CDEBUG(call, call->ast, "Incomming notify from LCR. (notify=%d)\n", param->notifyinfo.notify);
|
||
|
||
if (!call->ast) return;
|
||
|
||
/* use bridge to forware message not supported by asterisk */
|
||
bridge_message_if_bridged(call, message_type, param);
|
||
}
|
||
|
||
/*
|
||
* incoming information from LCR
|
||
*/
|
||
static void lcr_in_facility(struct chan_call *call, int message_type, union parameter *param)
|
||
{
|
||
CDEBUG(call, call->ast, "Incomming facility from LCR.\n");
|
||
|
||
if (!call->ast) return;
|
||
|
||
/* use bridge to forware message not supported by asterisk */
|
||
bridge_message_if_bridged(call, message_type, param);
|
||
}
|
||
|
||
/*
|
||
* got dtmf from bchannel
|
||
*/
|
||
void lcr_in_dtmf(struct chan_call *call, int val)
|
||
{
|
||
struct ast_channel *ast = call->ast;
|
||
struct ast_frame fr;
|
||
|
||
if (!ast)
|
||
return;
|
||
if (!call->pbx_started)
|
||
return;
|
||
|
||
CDEBUG(call, call->ast, "Frowarding DTMF digit '%c' to Asterisk.\n", val);
|
||
|
||
/* send digit to asterisk */
|
||
memset(&fr, 0, sizeof(fr));
|
||
fr.frametype = AST_FRAME_DTMF;
|
||
fr.subclass = val;
|
||
fr.delivery = ast_tv(0, 0);
|
||
ast_queue_frame(call->ast, &fr);
|
||
}
|
||
|
||
/*
|
||
* message received from LCR
|
||
*/
|
||
int receive_message(int message_type, unsigned long ref, union parameter *param)
|
||
{
|
||
struct bchannel *bchannel;
|
||
struct chan_call *call;
|
||
union parameter newparam;
|
||
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
|
||
/* handle bchannel message*/
|
||
if (message_type == MESSAGE_BCHANNEL)
|
||
{
|
||
switch(param->bchannel.type)
|
||
{
|
||
case BCHANNEL_ASSIGN:
|
||
CDEBUG(NULL, NULL, "Received BCHANNEL_ASSIGN message. (handle=%08lx)\n", param->bchannel.handle);
|
||
if ((bchannel = find_bchannel_handle(param->bchannel.handle)))
|
||
{
|
||
CERROR(NULL, NULL, "bchannel handle %x already assigned.\n", (int)param->bchannel.handle);
|
||
return(-1);
|
||
}
|
||
/* create bchannel */
|
||
bchannel = alloc_bchannel(param->bchannel.handle);
|
||
if (!bchannel)
|
||
{
|
||
CERROR(NULL, NULL, "alloc bchannel handle %x failed.\n", (int)param->bchannel.handle);
|
||
return(-1);
|
||
}
|
||
|
||
/* configure channel */
|
||
bchannel->b_tx_gain = param->bchannel.tx_gain;
|
||
bchannel->b_rx_gain = param->bchannel.rx_gain;
|
||
strncpy(bchannel->b_pipeline, param->bchannel.pipeline, sizeof(bchannel->b_pipeline)-1);
|
||
if (param->bchannel.crypt_len)
|
||
{
|
||
bchannel->b_crypt_len = param->bchannel.crypt_len;
|
||
bchannel->b_crypt_type = param->bchannel.crypt_type;
|
||
memcpy(bchannel->b_crypt_key, param->bchannel.crypt, param->bchannel.crypt_len);
|
||
}
|
||
bchannel->b_txdata = 0;
|
||
bchannel->b_dtmf = 1;
|
||
bchannel->b_tx_dejitter = 1;
|
||
|
||
/* in case, ref is not set, this bchannel instance must
|
||
* be created until it is removed again by LCR */
|
||
/* link to call */
|
||
call = find_call_ref(ref);
|
||
if (call)
|
||
{
|
||
bchannel->call = call;
|
||
call->bchannel = bchannel;
|
||
if (call->dtmf)
|
||
bchannel_dtmf(bchannel, 1);
|
||
#ifdef TODO
|
||
hier muesen alle bchannel-features gesetzt werden (pipeline...) falls sie vor dem b-kanal verf<EFBFBD>gbar waren
|
||
#endif
|
||
if (call->bridge_id) {
|
||
CDEBUG(call, call->ast, "Join bchannel, because call is already bridged.\n");
|
||
bchannel_join(bchannel, call->bridge_id);
|
||
}
|
||
}
|
||
if (bchannel_create(bchannel))
|
||
bchannel_activate(bchannel, 1);
|
||
/* acknowledge */
|
||
newparam.bchannel.type = BCHANNEL_ASSIGN_ACK;
|
||
newparam.bchannel.handle = param->bchannel.handle;
|
||
send_message(MESSAGE_BCHANNEL, 0, &newparam);
|
||
/* if call has released before bchannel is assigned */
|
||
if (!call) {
|
||
newparam.bchannel.type = BCHANNEL_RELEASE;
|
||
newparam.bchannel.handle = param->bchannel.handle;
|
||
send_message(MESSAGE_BCHANNEL, 0, &newparam);
|
||
}
|
||
|
||
break;
|
||
|
||
case BCHANNEL_REMOVE:
|
||
CDEBUG(NULL, NULL, "Received BCHANNEL_REMOVE message. (handle=%08lx)\n", param->bchannel.handle);
|
||
if (!(bchannel = find_bchannel_handle(param->bchannel.handle)))
|
||
{
|
||
CERROR(NULL, NULL, "Bchannel handle %x not assigned.\n", (int)param->bchannel.handle);
|
||
return(-1);
|
||
}
|
||
/* unklink from call and destroy bchannel */
|
||
free_bchannel(bchannel);
|
||
|
||
/* acknowledge */
|
||
newparam.bchannel.type = BCHANNEL_REMOVE_ACK;
|
||
newparam.bchannel.handle = param->bchannel.handle;
|
||
send_message(MESSAGE_BCHANNEL, 0, &newparam);
|
||
|
||
break;
|
||
|
||
default:
|
||
CDEBUG(NULL, NULL, "Received unknown bchannel message %d.\n", param->bchannel.type);
|
||
}
|
||
return(0);
|
||
}
|
||
|
||
/* handle new ref */
|
||
if (message_type == MESSAGE_NEWREF)
|
||
{
|
||
if (param->direction)
|
||
{
|
||
/* new ref from lcr */
|
||
CDEBUG(NULL, NULL, "Received new ref by LCR, due to incomming call. (ref=%ld)\n", ref);
|
||
if (!ref || find_call_ref(ref))
|
||
{
|
||
CERROR(NULL, NULL, "Illegal new ref %ld received.\n", ref);
|
||
return(-1);
|
||
}
|
||
/* allocate new call instance */
|
||
call = alloc_call();
|
||
/* new state */
|
||
call->state = CHAN_LCR_STATE_IN_PREPARE;
|
||
/* set ref */
|
||
call->ref = ref;
|
||
/* wait for setup (or release from asterisk) */
|
||
} else
|
||
{
|
||
/* new ref, as requested from this remote application */
|
||
CDEBUG(NULL, NULL, "Received new ref by LCR, as requested from chan_lcr. (ref=%ld)\n", ref);
|
||
call = find_call_ref(0);
|
||
if (!call)
|
||
{
|
||
/* send release, if ref does not exist */
|
||
CDEBUG(NULL, NULL, "No call found, that requests a ref.\n");
|
||
send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
|
||
return(0);
|
||
}
|
||
/* store new ref */
|
||
call->ref = ref;
|
||
/* send pending setup info */
|
||
if (call->state == CHAN_LCR_STATE_OUT_PREPARE)
|
||
send_setup_to_lcr(call);
|
||
/* release if asterisk has signed off */
|
||
else if (call->state == CHAN_LCR_STATE_RELEASE)
|
||
{
|
||
/* send release */
|
||
if (call->cause)
|
||
send_release_and_import(call, call->cause, call->location);
|
||
else
|
||
send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
|
||
/* free call */
|
||
free_call(call);
|
||
return(0);
|
||
}
|
||
}
|
||
return(0);
|
||
}
|
||
|
||
/* check ref */
|
||
if (!ref)
|
||
{
|
||
CERROR(NULL, NULL, "Received message %d without ref.\n", message_type);
|
||
return(-1);
|
||
}
|
||
call = find_call_ref(ref);
|
||
if (!call)
|
||
{
|
||
/* ignore ref that is not used (anymore) */
|
||
CDEBUG(NULL, NULL, "Message %d from LCR ignored, because no call instance found.\n", message_type);
|
||
return(0);
|
||
}
|
||
|
||
/* handle messages */
|
||
switch(message_type)
|
||
{
|
||
case MESSAGE_SETUP:
|
||
lcr_in_setup(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_OVERLAP:
|
||
lcr_in_overlap(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_PROCEEDING:
|
||
lcr_in_proceeding(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_ALERTING:
|
||
lcr_in_alerting(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_CONNECT:
|
||
lcr_in_connect(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_DISCONNECT:
|
||
lcr_in_disconnect(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_RELEASE:
|
||
lcr_in_release(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_INFORMATION:
|
||
lcr_in_information(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_NOTIFY:
|
||
lcr_in_notify(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_FACILITY:
|
||
lcr_in_facility(call, message_type, param);
|
||
break;
|
||
|
||
case MESSAGE_PATTERN: // audio available from LCR
|
||
break;
|
||
|
||
case MESSAGE_NOPATTERN: // audio not available from LCR
|
||
break;
|
||
|
||
case MESSAGE_AUDIOPATH: // if remote audio connected or hold
|
||
call->audiopath = param->audiopath;
|
||
break;
|
||
|
||
default:
|
||
CDEBUG(call, call->ast, "Message %d from LCR unhandled.\n", message_type);
|
||
break;
|
||
}
|
||
return(0);
|
||
}
|
||
|
||
/*
|
||
* release all calls (due to broken socket)
|
||
*/
|
||
static void release_all_calls(void)
|
||
{
|
||
struct chan_call *call;
|
||
|
||
again:
|
||
call = call_first;
|
||
while(call) {
|
||
/* no ast, so we may directly free call */
|
||
if (!call->ast) {
|
||
CDEBUG(call, NULL, "Freeing call, because no Asterisk channel is linked.\n");
|
||
free_call(call);
|
||
goto again;
|
||
}
|
||
/* already in release process */
|
||
if (call->state == CHAN_LCR_STATE_RELEASE) {
|
||
call = call->next;
|
||
continue;
|
||
}
|
||
/* release or queue release */
|
||
call->ref = 0;
|
||
call->state = CHAN_LCR_STATE_RELEASE;
|
||
if (!call->pbx_started) {
|
||
CDEBUG(call, call->ast, "Releasing call, because no Asterisk channel is not started.\n");
|
||
ast_hangup(call->ast); // call will be destroyed here
|
||
goto again;
|
||
}
|
||
CDEBUG(call, call->ast, "Queue call release, because Asterisk channel is running.\n");
|
||
ast_queue_hangup(call->ast);
|
||
call = call->next;
|
||
}
|
||
|
||
/* release all bchannels */
|
||
while(bchannel_first)
|
||
free_bchannel(bchannel_first);
|
||
}
|
||
|
||
|
||
/* asterisk handler
|
||
* warning! not thread safe
|
||
* returns -1 for socket error, 0 for no work, 1 for work
|
||
*/
|
||
int handle_socket(void)
|
||
{
|
||
int work = 0;
|
||
int len;
|
||
struct admin_list *admin;
|
||
struct admin_message msg;
|
||
|
||
/* read from socket */
|
||
len = read(lcr_sock, &msg, sizeof(msg));
|
||
if (len == 0)
|
||
{
|
||
CERROR(NULL, NULL, "Socket closed.\n");
|
||
return(-1); // socket closed
|
||
}
|
||
if (len > 0)
|
||
{
|
||
if (len != sizeof(msg))
|
||
{
|
||
CERROR(NULL, NULL, "Socket short read. (len %d)\n", len);
|
||
return(-1); // socket error
|
||
}
|
||
if (msg.message != ADMIN_MESSAGE)
|
||
{
|
||
CERROR(NULL, NULL, "Socket received illegal message %d.\n", msg.message);
|
||
return(-1);
|
||
}
|
||
receive_message(msg.u.msg.type, msg.u.msg.ref, &msg.u.msg.param);
|
||
work = 1;
|
||
} else
|
||
{
|
||
if (errno != EWOULDBLOCK)
|
||
{
|
||
CERROR(NULL, NULL, "Socket failed (errno %d).\n", errno);
|
||
return(-1);
|
||
}
|
||
}
|
||
|
||
/* write to socket */
|
||
if (!admin_first)
|
||
return(work);
|
||
admin = admin_first;
|
||
len = write(lcr_sock, &admin->msg, sizeof(msg));
|
||
if (len == 0)
|
||
{
|
||
CERROR(NULL, NULL, "Socket closed.\n");
|
||
return(-1); // socket closed
|
||
}
|
||
if (len > 0)
|
||
{
|
||
if (len != sizeof(msg))
|
||
{
|
||
CERROR(NULL, NULL, "Socket short write. (len %d)\n", len);
|
||
return(-1); // socket error
|
||
}
|
||
/* free head */
|
||
admin_first = admin->next;
|
||
free(admin);
|
||
|
||
work = 1;
|
||
} else
|
||
{
|
||
if (errno != EWOULDBLOCK)
|
||
{
|
||
CERROR(NULL, NULL, "Socket failed (errno %d).\n", errno);
|
||
return(-1);
|
||
}
|
||
}
|
||
|
||
return(work);
|
||
}
|
||
|
||
/*
|
||
* open and close socket and thread
|
||
*/
|
||
int open_socket(void)
|
||
{
|
||
int ret;
|
||
char *socket_name = SOCKET_NAME;
|
||
int conn;
|
||
struct sockaddr_un sock_address;
|
||
unsigned long on = 1;
|
||
union parameter param;
|
||
|
||
/* open socket */
|
||
if ((lcr_sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
|
||
{
|
||
CERROR(NULL, NULL, "Failed to create socket.\n");
|
||
return(lcr_sock);
|
||
}
|
||
|
||
/* set socket address and name */
|
||
memset(&sock_address, 0, sizeof(sock_address));
|
||
sock_address.sun_family = PF_UNIX;
|
||
strcpy(sock_address.sun_path, socket_name);
|
||
|
||
/* connect socket */
|
||
if ((conn = connect(lcr_sock, (struct sockaddr *)&sock_address, SUN_LEN(&sock_address))) < 0)
|
||
{
|
||
close(lcr_sock);
|
||
lcr_sock = -1;
|
||
CDEBUG(NULL, NULL, "Failed to connect to socket '%s'. Is LCR running?\n", sock_address.sun_path);
|
||
return(conn);
|
||
}
|
||
|
||
/* set non-blocking io */
|
||
if ((ret = ioctl(lcr_sock, FIONBIO, (unsigned char *)(&on))) < 0)
|
||
{
|
||
close(lcr_sock);
|
||
lcr_sock = -1;
|
||
CERROR(NULL, NULL, "Failed to set socket into non-blocking IO.\n");
|
||
return(ret);
|
||
}
|
||
|
||
/* enque hello message */
|
||
memset(¶m, 0, sizeof(param));
|
||
strcpy(param.hello.application, "asterisk");
|
||
send_message(MESSAGE_HELLO, 0, ¶m);
|
||
|
||
return(lcr_sock);
|
||
}
|
||
|
||
void close_socket(void)
|
||
{
|
||
struct admin_list *admin, *temp;
|
||
|
||
/* flush pending messages */
|
||
admin = admin_first;
|
||
while(admin) {
|
||
temp = admin;
|
||
admin = admin->next;
|
||
free(temp);
|
||
}
|
||
admin_first = NULL;
|
||
|
||
/* close socket */
|
||
if (lcr_sock >= 0)
|
||
close(lcr_sock);
|
||
lcr_sock = -1;
|
||
}
|
||
|
||
void sighandler(int sigset)
|
||
{
|
||
}
|
||
|
||
static void *chan_thread(void *arg)
|
||
{
|
||
int work;
|
||
int ret;
|
||
union parameter param;
|
||
time_t retry = 0, now;
|
||
|
||
bchannel_pid = getpid();
|
||
|
||
// signal(SIGPIPE, sighandler);
|
||
|
||
memset(¶m, 0, sizeof(union parameter));
|
||
if (lcr_sock < 0)
|
||
time(&retry);
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
|
||
while(!quit) {
|
||
work = 0;
|
||
|
||
if (lcr_sock > 0) {
|
||
/* handle socket */
|
||
ret = handle_socket();
|
||
if (ret < 0) {
|
||
CERROR(NULL, NULL, "Handling of socket failed - closing for some seconds.\n");
|
||
close_socket();
|
||
release_all_calls();
|
||
time(&retry);
|
||
}
|
||
if (ret)
|
||
work = 1;
|
||
} else {
|
||
time(&now);
|
||
if (retry && now-retry > 5) {
|
||
CDEBUG(NULL, NULL, "Retry to open socket.\n");
|
||
retry = 0;
|
||
if (open_socket() < 0) {
|
||
time(&retry);
|
||
}
|
||
work = 1;
|
||
}
|
||
|
||
}
|
||
|
||
/* handle mISDN */
|
||
ret = bchannel_handle();
|
||
if (ret)
|
||
work = 1;
|
||
|
||
if (!work) {
|
||
ast_mutex_unlock(&chan_lock);
|
||
usleep(30000);
|
||
ast_mutex_lock(&chan_lock);
|
||
}
|
||
}
|
||
|
||
close_socket();
|
||
|
||
CERROR(NULL, NULL, "Thread exit.\n");
|
||
|
||
ast_mutex_unlock(&chan_lock);
|
||
|
||
// signal(SIGPIPE, SIG_DFL);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/*
|
||
* new asterisk instance
|
||
*/
|
||
static
|
||
struct ast_channel *lcr_request(const char *type, int format, void *data, int *cause)
|
||
{
|
||
char exten[256], *dial, *interface, *opt;
|
||
struct ast_channel *ast;
|
||
struct chan_call *call;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
|
||
CDEBUG(NULL, NULL, "Received request from Asterisk. data=%s\n", (char *)data);
|
||
|
||
/* if socket is closed */
|
||
if (lcr_sock < 0)
|
||
{
|
||
CERROR(NULL, NULL, "Rejecting call from Asterisk, because LCR not running.\n");
|
||
return NULL;
|
||
}
|
||
|
||
/* create call instance */
|
||
call = alloc_call();
|
||
if (!call)
|
||
{
|
||
/* failed to create instance */
|
||
return NULL;
|
||
}
|
||
|
||
/* create asterisk channel instrance */
|
||
ast = ast_channel_alloc(1, AST_STATE_RESERVED, NULL, NULL, "", NULL, "", 0, "%s/%d", lcr_type, ++glob_channel);
|
||
if (!ast)
|
||
{
|
||
CERROR(NULL, NULL, "Failed to create Asterisk channel.\n");
|
||
free_call(call);
|
||
/* failed to create instance */
|
||
return NULL;
|
||
}
|
||
ast->tech = &lcr_tech;
|
||
ast->tech_pvt = (void *)1L; // set pointer or asterisk will not call
|
||
/* configure channel */
|
||
ast->nativeformats = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
|
||
ast->readformat = ast->rawreadformat = ast->nativeformats;
|
||
ast->writeformat = ast->rawwriteformat = ast->nativeformats;
|
||
ast->priority = 1;
|
||
ast->hangupcause = 0;
|
||
|
||
/* link together */
|
||
call->ast = ast;
|
||
ast->tech_pvt = call;
|
||
ast->fds[0] = call->pipe[0];
|
||
ast_mutex_unlock(&chan_lock);
|
||
call->pbx_started = 0;
|
||
/* set state */
|
||
call->state = CHAN_LCR_STATE_OUT_PREPARE;
|
||
|
||
/*
|
||
* Extract interface, dialstring, options from data.
|
||
* Formats can be:
|
||
* <dialstring>
|
||
* <interface>/<dialstring>
|
||
* <interface>/<dialstring>/options
|
||
*/
|
||
strncpy(exten, (char *)data, sizeof(exten)-1);
|
||
exten[sizeof(exten)-1] = '\0';
|
||
if ((dial = strchr(exten, '/'))) {
|
||
*dial++ = '\0';
|
||
interface = exten;
|
||
if ((opt = strchr(dial, '/')))
|
||
*opt++ = '\0';
|
||
else
|
||
opt = "";
|
||
} else {
|
||
dial = exten;
|
||
interface = "";
|
||
opt = "";
|
||
}
|
||
strncpy(call->interface, interface, sizeof(call->interface)-1);
|
||
strncpy(call->dialstring, dial, sizeof(call->dialstring)-1);
|
||
|
||
#warning todo: parse options
|
||
|
||
return ast;
|
||
}
|
||
|
||
/*
|
||
* call from asterisk
|
||
*/
|
||
static int lcr_call(struct ast_channel *ast, char *dest, int timeout)
|
||
{
|
||
union parameter newparam;
|
||
struct chan_call *call;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
CERROR(NULL, ast, "Received call from Asterisk, but call instance does not exist.\n");
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
|
||
CDEBUG(NULL, ast, "Received call from Asterisk.\n");
|
||
|
||
/* pbx process is started */
|
||
call->pbx_started = 1;
|
||
/* send MESSAGE_NEWREF */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.direction = 0; /* request from app */
|
||
send_message(MESSAGE_NEWREF, 0, &newparam);
|
||
|
||
ast_mutex_unlock(&chan_lock);
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_digit(struct ast_channel *ast, char digit)
|
||
{
|
||
struct chan_call *call;
|
||
union parameter newparam;
|
||
char buf[]="x";
|
||
|
||
/* only pass IA5 number space */
|
||
if (digit > 126 || digit < 32)
|
||
return 0;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
CERROR(NULL, ast, "Received digit from Asterisk, but no call instance exists.\n");
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
|
||
CDEBUG(call, ast, "Received digit '%c' from Asterisk.\n", digit);
|
||
|
||
/* send information or queue them */
|
||
if (call->ref && call->state == CHAN_LCR_STATE_OUT_DIALING)
|
||
{
|
||
CDEBUG(call, ast, "Sending digit to LCR, because we are in dialing state.\n");
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.information.id[0] = digit;
|
||
newparam.information.id[1] = '\0';
|
||
send_message(MESSAGE_INFORMATION, call->ref, &newparam);
|
||
} else
|
||
if (!call->ref
|
||
&& (call->state == CHAN_LCR_STATE_OUT_PREPARE || call->state == CHAN_LCR_STATE_OUT_SETUP))
|
||
{
|
||
CDEBUG(call, ast, "Queue digits, because we are in setup/dialing state and have no ref yet.\n");
|
||
*buf = digit;
|
||
strncat(call->dialque, buf, strlen(call->dialque)-1);
|
||
}
|
||
|
||
ast_mutex_unlock(&chan_lock);
|
||
|
||
return(0);
|
||
}
|
||
|
||
static int lcr_answer(struct ast_channel *ast)
|
||
{
|
||
union parameter newparam;
|
||
struct chan_call *call;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
CERROR(NULL, ast, "Received answer from Asterisk, but no call instance exists.\n");
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
|
||
CDEBUG(call, ast, "Received answer from Asterisk.\n");
|
||
|
||
/* copy connectinfo, if bridged */
|
||
if (call->bridge_call)
|
||
memcpy(&call->connectinfo, &call->bridge_call->connectinfo, sizeof(struct connect_info));
|
||
/* send connect message to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
memcpy(&newparam.connectinfo, &call->connectinfo, sizeof(struct connect_info));
|
||
send_message(MESSAGE_CONNECT, call->ref, &newparam);
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_CONNECT;
|
||
/* request bchannel */
|
||
if (!call->bchannel) {
|
||
CDEBUG(call, ast, "Requesting B-channel.\n");
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.bchannel.type = BCHANNEL_REQUEST;
|
||
send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
|
||
}
|
||
/* enable keypad */
|
||
// memset(&newparam, 0, sizeof(union parameter));
|
||
// send_message(MESSAGE_ENABLEKEYPAD, call->ref, &newparam);
|
||
call->dtmf = 1;
|
||
|
||
ast_mutex_unlock(&chan_lock);
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_hangup(struct ast_channel *ast)
|
||
{
|
||
struct chan_call *call;
|
||
pthread_t tid = pthread_self();
|
||
|
||
if (!pthread_equal(tid, chan_tid))
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
CERROR(NULL, ast, "Received hangup from Asterisk, but no call instance exists.\n");
|
||
if (!pthread_equal(tid, chan_tid))
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
|
||
if (!pthread_equal(tid, chan_tid))
|
||
CDEBUG(call, ast, "Received hangup from Asterisk thread.\n");
|
||
else
|
||
CDEBUG(call, ast, "Received hangup from LCR thread.\n");
|
||
|
||
/* disconnect asterisk, maybe not required */
|
||
ast->tech_pvt = NULL;
|
||
ast->fds[0] = -1;
|
||
if (call->ref)
|
||
{
|
||
/* release */
|
||
CDEBUG(call, ast, "Releasing ref and freeing call instance.\n");
|
||
if (ast->hangupcause > 0)
|
||
send_release_and_import(call, ast->hangupcause, LOCATION_PRIVATE_LOCAL);
|
||
else
|
||
send_release_and_import(call, CAUSE_RESSOURCEUNAVAIL, LOCATION_PRIVATE_LOCAL);
|
||
/* remove call */
|
||
free_call(call);
|
||
if (!pthread_equal(tid, chan_tid))
|
||
ast_mutex_unlock(&chan_lock);
|
||
return 0;
|
||
} else
|
||
{
|
||
/* ref is not set, due to prepare setup or release */
|
||
if (call->state == CHAN_LCR_STATE_RELEASE)
|
||
{
|
||
/* we get the response to our release */
|
||
CDEBUG(call, ast, "Freeing call instance, because we have no ref AND we are requesting no ref.\n");
|
||
free_call(call);
|
||
} else
|
||
{
|
||
/* during prepare, we change to release state */
|
||
CDEBUG(call, ast, "We must wait until we received our ref, until we can free call instance.\n");
|
||
call->state = CHAN_LCR_STATE_RELEASE;
|
||
}
|
||
}
|
||
if (!pthread_equal(tid, chan_tid))
|
||
ast_mutex_unlock(&chan_lock);
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_write(struct ast_channel *ast, struct ast_frame *f)
|
||
{
|
||
struct chan_call *call;
|
||
|
||
if (!f->subclass)
|
||
CDEBUG(NULL, ast, "No subclass\n");
|
||
if (!(f->subclass & ast->nativeformats))
|
||
CDEBUG(NULL, ast, "Unexpected format.\n");
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
if (call->bchannel && f->samples)
|
||
bchannel_transmit(call->bchannel, f->data, f->samples);
|
||
ast_mutex_unlock(&chan_lock);
|
||
return 0;
|
||
}
|
||
|
||
|
||
static struct ast_frame *lcr_read(struct ast_channel *ast)
|
||
{
|
||
struct chan_call *call;
|
||
int i, len;
|
||
unsigned char *p;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
ast_mutex_unlock(&chan_lock);
|
||
return NULL;
|
||
}
|
||
if (call->pipe[0] > -1) {
|
||
len = read(call->pipe[0], call->read_buff, sizeof(call->read_buff));
|
||
if (len <= 0) {
|
||
close(call->pipe[0]);
|
||
call->pipe[0] = -1;
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
p = call->read_buff;
|
||
for (i = 0; i < len; i++) {
|
||
*p = flip_bits[*p];
|
||
p++;
|
||
}
|
||
|
||
call->read_fr.frametype = AST_FRAME_VOICE;
|
||
call->read_fr.subclass = ast->nativeformats;
|
||
call->read_fr.datalen = len;
|
||
call->read_fr.samples = len;
|
||
call->read_fr.delivery = ast_tv(0,0);
|
||
call->read_fr.data = call->read_buff;
|
||
ast_mutex_unlock(&chan_lock);
|
||
|
||
return &call->read_fr;
|
||
}
|
||
|
||
static int lcr_indicate(struct ast_channel *ast, int cond, const void *data, size_t datalen)
|
||
{
|
||
union parameter newparam;
|
||
int res = 0;
|
||
struct chan_call *call;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
CERROR(NULL, ast, "Received indicate from Asterisk, but no call instance exists.\n");
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
|
||
switch (cond) {
|
||
case AST_CONTROL_BUSY:
|
||
CDEBUG(call, ast, "Received indicate AST_CONTROL_BUSY from Asterisk.\n");
|
||
ast_setstate(ast, AST_STATE_BUSY);
|
||
if (call->state != CHAN_LCR_STATE_OUT_DISCONNECT) {
|
||
/* send message to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.disconnectinfo.cause = 17;
|
||
newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
|
||
send_message(MESSAGE_DISCONNECT, call->ref, &newparam);
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_OUT_DISCONNECT;
|
||
}
|
||
break;
|
||
case AST_CONTROL_CONGESTION:
|
||
CDEBUG(call, ast, "Received indicate AST_CONTROL_CONGESTION from Asterisk. (cause %d)\n", ast->hangupcause);
|
||
if (call->state != CHAN_LCR_STATE_OUT_DISCONNECT) {
|
||
/* send message to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.disconnectinfo.cause = ast->hangupcause;
|
||
newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
|
||
send_message(MESSAGE_DISCONNECT, call->ref, &newparam);
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_OUT_DISCONNECT;
|
||
}
|
||
break;
|
||
case AST_CONTROL_PROCEEDING:
|
||
CDEBUG(call, ast, "Received indicate AST_CONTROL_PROCEEDING from Asterisk.\n");
|
||
if (call->state == CHAN_LCR_STATE_IN_SETUP
|
||
|| call->state == CHAN_LCR_STATE_IN_DIALING) {
|
||
/* send message to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
send_message(MESSAGE_PROCEEDING, call->ref, &newparam);
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_IN_PROCEEDING;
|
||
}
|
||
break;
|
||
case AST_CONTROL_RINGING:
|
||
CDEBUG(call, ast, "Received indicate AST_CONTROL_RINGING from Asterisk.\n");
|
||
ast_setstate(ast, AST_STATE_RINGING);
|
||
if (call->state == CHAN_LCR_STATE_IN_SETUP
|
||
|| call->state == CHAN_LCR_STATE_IN_DIALING
|
||
|| call->state == CHAN_LCR_STATE_IN_PROCEEDING) {
|
||
/* send message to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
send_message(MESSAGE_ALERTING, call->ref, &newparam);
|
||
/* change state */
|
||
call->state = CHAN_LCR_STATE_IN_ALERTING;
|
||
}
|
||
break;
|
||
case -1:
|
||
CDEBUG(call, ast, "Received indicate -1.\n");
|
||
res = -1;
|
||
break;
|
||
|
||
case AST_CONTROL_VIDUPDATE:
|
||
CDEBUG(call, ast, "Received indicate AST_CONTROL_VIDUPDATE.\n");
|
||
res = -1;
|
||
break;
|
||
case AST_CONTROL_HOLD:
|
||
CDEBUG(call, ast, "Received indicate AST_CONTROL_HOLD from Asterisk.\n");
|
||
/* send message to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_HOLD;
|
||
send_message(MESSAGE_NOTIFY, call->ref, &newparam);
|
||
break;
|
||
case AST_CONTROL_UNHOLD:
|
||
CDEBUG(call, ast, "Received indicate AST_CONTROL_UNHOLD from Asterisk.\n");
|
||
/* send message to lcr */
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
|
||
send_message(MESSAGE_NOTIFY, call->ref, &newparam);
|
||
break;
|
||
|
||
default:
|
||
CERROR(call, ast, "Received indicate from Asterisk with unknown condition %d.\n", cond);
|
||
res = -1;
|
||
break;
|
||
}
|
||
|
||
/* return */
|
||
ast_mutex_unlock(&chan_lock);
|
||
return res;
|
||
}
|
||
|
||
/*
|
||
* fixup asterisk
|
||
*/
|
||
static int lcr_fixup(struct ast_channel *oldast, struct ast_channel *newast)
|
||
{
|
||
struct chan_call *call;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = oldast->tech_pvt;
|
||
if (!call) {
|
||
CERROR(NULL, oldast, "Received fixup from Asterisk, but no call instance exists.\n");
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
|
||
CDEBUG(call, oldast, "Received fixup from Asterisk.\n");
|
||
call->ast = newast;
|
||
ast_mutex_lock(&chan_lock);
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* send_text asterisk
|
||
*/
|
||
static int lcr_send_text(struct ast_channel *ast, const char *text)
|
||
{
|
||
struct chan_call *call;
|
||
union parameter newparam;
|
||
|
||
ast_mutex_lock(&chan_lock);
|
||
call = ast->tech_pvt;
|
||
if (!call) {
|
||
CERROR(NULL, ast, "Received send_text from Asterisk, but no call instance exists.\n");
|
||
ast_mutex_unlock(&chan_lock);
|
||
return -1;
|
||
}
|
||
|
||
CDEBUG(call, ast, "Received send_text from Asterisk. (text=%s)\n", text);
|
||
memset(&newparam, 0, sizeof(union parameter));
|
||
strncpy(newparam.notifyinfo.display, text, sizeof(newparam.notifyinfo.display)-1);
|
||
send_message(MESSAGE_NOTIFY, call->ref, &newparam);
|
||
ast_mutex_lock(&chan_lock);
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
* bridge process
|
||
*/
|
||
enum ast_bridge_result lcr_bridge(struct ast_channel *ast1,
|
||
struct ast_channel *ast2, int flags,
|
||
struct ast_frame **fo,
|
||
struct ast_channel **rc, int timeoutms)
|
||
|
||
{
|
||
struct chan_call *call1, *call2;
|
||
struct ast_channel *carr[2], *who;
|
||
int to;
|
||
struct ast_frame *f;
|
||
int bridge_id;
|
||
|
||
CDEBUG(NULL, NULL, "Received briding request from Asterisk.\n");
|
||
|
||
carr[0] = ast1;
|
||
carr[1] = ast2;
|
||
|
||
/* join via dsp (if the channels are currently open) */
|
||
ast_mutex_lock(&chan_lock);
|
||
bridge_id = new_bridge_id();
|
||
call1 = ast1->tech_pvt;
|
||
call2 = ast2->tech_pvt;
|
||
if (call1 && call2)
|
||
{
|
||
call1->bridge_id = bridge_id;
|
||
if (call1->bchannel)
|
||
bchannel_join(call1->bchannel, bridge_id);
|
||
call1->bridge_call = call2;
|
||
}
|
||
if (call2)
|
||
{
|
||
call2->bridge_id = bridge_id;
|
||
if (call2->bchannel)
|
||
bchannel_join(call2->bchannel, bridge_id);
|
||
call2->bridge_call = call1;
|
||
}
|
||
ast_mutex_unlock(&chan_lock);
|
||
|
||
while(1) {
|
||
to = -1;
|
||
who = ast_waitfor_n(carr, 2, &to);
|
||
|
||
if (!who) {
|
||
CDEBUG(NULL, NULL, "Empty read on bridge, breaking out.\n");
|
||
break;
|
||
}
|
||
f = ast_read(who);
|
||
|
||
if (!f || f->frametype == AST_FRAME_CONTROL) {
|
||
if (!f)
|
||
CDEBUG(NULL, NULL, "Got hangup.\n");
|
||
else
|
||
CDEBUG(NULL, NULL, "Got CONTROL.\n");
|
||
/* got hangup .. */
|
||
*fo=f;
|
||
*rc=who;
|
||
break;
|
||
}
|
||
|
||
if ( f->frametype == AST_FRAME_DTMF ) {
|
||
CDEBUG(NULL, NULL, "Got DTMF.\n");
|
||
*fo=f;
|
||
*rc=who;
|
||
break;
|
||
}
|
||
|
||
|
||
if (who == ast1) {
|
||
ast_write(ast2,f);
|
||
}
|
||
else {
|
||
ast_write(ast1,f);
|
||
}
|
||
|
||
}
|
||
|
||
CDEBUG(NULL, NULL, "Releasing bride.\n");
|
||
|
||
/* split channels */
|
||
ast_mutex_lock(&chan_lock);
|
||
call1 = ast1->tech_pvt;
|
||
call2 = ast2->tech_pvt;
|
||
if (call1)
|
||
{
|
||
call1->bridge_id = 0;
|
||
if (call1->bchannel)
|
||
bchannel_join(call1->bchannel, 0);
|
||
if (call1->bridge_call)
|
||
call1->bridge_call->bridge_call = NULL;
|
||
call1->bridge_call = NULL;
|
||
}
|
||
if (call2)
|
||
{
|
||
call2->bridge_id = 0;
|
||
if (call2->bchannel)
|
||
bchannel_join(call2->bchannel, 0);
|
||
if (call2->bridge_call)
|
||
call2->bridge_call->bridge_call = NULL;
|
||
call2->bridge_call = NULL;
|
||
}
|
||
ast_mutex_unlock(&chan_lock);
|
||
|
||
|
||
return AST_BRIDGE_COMPLETE;
|
||
}
|
||
static struct ast_channel_tech lcr_tech = {
|
||
.type="LCR",
|
||
.description="Channel driver for connecting to Linux-Call-Router",
|
||
.requester=lcr_request,
|
||
.send_digit_begin=lcr_digit,
|
||
.call=lcr_call,
|
||
.bridge=lcr_bridge,
|
||
.hangup=lcr_hangup,
|
||
.answer=lcr_answer,
|
||
.read=lcr_read,
|
||
.write=lcr_write,
|
||
.indicate=lcr_indicate,
|
||
.fixup=lcr_fixup,
|
||
.send_text=lcr_send_text,
|
||
.properties=0
|
||
};
|
||
|
||
|
||
/*
|
||
* cli
|
||
*/
|
||
#if 0
|
||
static int lcr_show_lcr (int fd, int argc, char *argv[])
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_show_calls (int fd, int argc, char *argv[])
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_reload_routing (int fd, int argc, char *argv[])
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_reload_interfaces (int fd, int argc, char *argv[])
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_port_block (int fd, int argc, char *argv[])
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_port_unblock (int fd, int argc, char *argv[])
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static int lcr_port_unload (int fd, int argc, char *argv[])
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
static struct ast_cli_entry cli_show_lcr =
|
||
{ {"lcr", "show", "lcr", NULL},
|
||
lcr_show_lcr,
|
||
"Shows current states of LCR core",
|
||
"Usage: lcr show lcr\n",
|
||
};
|
||
|
||
static struct ast_cli_entry cli_show_calls =
|
||
{ {"lcr", "show", "calls", NULL},
|
||
lcr_show_calls,
|
||
"Shows current calls made by LCR and Asterisk",
|
||
"Usage: lcr show calls\n",
|
||
};
|
||
|
||
static struct ast_cli_entry cli_reload_routing =
|
||
{ {"lcr", "reload", "routing", NULL},
|
||
lcr_reload_routing,
|
||
"Reloads routing conf of LCR, current uncomplete calls will be disconnected",
|
||
"Usage: lcr reload routing\n",
|
||
};
|
||
|
||
static struct ast_cli_entry cli_reload_interfaces =
|
||
{ {"lcr", "reload", "interfaces", NULL},
|
||
lcr_reload_interfaces,
|
||
"Reloads interfaces conf of LCR",
|
||
"Usage: lcr reload interfaces\n",
|
||
};
|
||
|
||
static struct ast_cli_entry cli_port_block =
|
||
{ {"lcr", "port", "block", NULL},
|
||
lcr_port_block,
|
||
"Blocks LCR port for further calls",
|
||
"Usage: lcr port block \"<port>\"\n",
|
||
};
|
||
|
||
static struct ast_cli_entry cli_port_unblock =
|
||
{ {"lcr", "port", "unblock", NULL},
|
||
lcr_port_unblock,
|
||
"Unblocks or loads LCR port, port is opened my mISDN",
|
||
"Usage: lcr port unblock \"<port>\"\n",
|
||
};
|
||
|
||
static struct ast_cli_entry cli_port_unload =
|
||
{ {"lcr", "port", "unload", NULL},
|
||
lcr_port_unload,
|
||
"Unloads LCR port, port is closes by mISDN",
|
||
"Usage: lcr port unload \"<port>\"\n",
|
||
};
|
||
#endif
|
||
|
||
|
||
/*
|
||
* module loading and destruction
|
||
*/
|
||
int load_module(void)
|
||
{
|
||
u_short i;
|
||
|
||
for (i = 0; i < 256; i++) {
|
||
flip_bits[i] = (i>>7) | ((i>>5)&2) | ((i>>3)&4) | ((i>>1)&8)
|
||
| (i<<7) | ((i&2)<<5) | ((i&4)<<3) | ((i&8)<<1);
|
||
}
|
||
|
||
if (read_options() == 0) {
|
||
CERROR(NULL, NULL, "%s", options_error);
|
||
return AST_MODULE_LOAD_DECLINE;
|
||
}
|
||
|
||
ast_mutex_init(&chan_lock);
|
||
ast_mutex_init(&log_lock);
|
||
|
||
if (open_socket() < 0) {
|
||
/* continue with closed socket */
|
||
}
|
||
|
||
if (bchannel_initialize()) {
|
||
CERROR(NULL, NULL, "Unable to open mISDN device\n");
|
||
close_socket();
|
||
return AST_MODULE_LOAD_DECLINE;
|
||
}
|
||
mISDN_created = 1;
|
||
|
||
lcr_tech.capabilities = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
|
||
if (ast_channel_register(&lcr_tech)) {
|
||
CERROR(NULL, NULL, "Unable to register channel class\n");
|
||
bchannel_deinitialize();
|
||
close_socket();
|
||
return AST_MODULE_LOAD_DECLINE;
|
||
}
|
||
|
||
#if 0
|
||
ast_cli_register(&cli_show_lcr);
|
||
ast_cli_register(&cli_show_calls);
|
||
|
||
ast_cli_register(&cli_reload_routing);
|
||
ast_cli_register(&cli_reload_interfaces);
|
||
ast_cli_register(&cli_port_block);
|
||
ast_cli_register(&cli_port_unblock);
|
||
ast_cli_register(&cli_port_unload);
|
||
|
||
ast_register_application("misdn_set_opt", misdn_set_opt_exec, "misdn_set_opt",
|
||
"misdn_set_opt(:<opt><optarg>:<opt><optarg>..):\n"
|
||
"Sets mISDN opts. and optargs\n"
|
||
"\n"
|
||
"The available options are:\n"
|
||
" d - Send display text on called phone, text is the optparam\n"
|
||
" n - don't detect dtmf tones on called channel\n"
|
||
" h - make digital outgoing call\n"
|
||
" c - make crypted outgoing call, param is keyindex\n"
|
||
" e - perform echo cancelation on this channel,\n"
|
||
" takes taps as arguments (32,64,128,256)\n"
|
||
" s - send Non Inband DTMF as inband\n"
|
||
" vr - rxgain control\n"
|
||
" vt - txgain control\n"
|
||
);
|
||
|
||
|
||
lcr_cfg_get( 0, LCR_GEN_TRACEFILE, global_tracefile, BUFFERSIZE);
|
||
|
||
=======
|
||
//lcr_cfg_get( 0, LCR_GEN_TRACEFILE, global_tracefile, BUFFERSIZE);
|
||
#endif
|
||
|
||
quit = 0;
|
||
if ((pthread_create(&chan_tid, NULL, chan_thread, NULL)<0))
|
||
{
|
||
/* failed to create thread */
|
||
bchannel_deinitialize();
|
||
close_socket();
|
||
ast_channel_unregister(&lcr_tech);
|
||
return AST_MODULE_LOAD_DECLINE;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
int unload_module(void)
|
||
{
|
||
/* First, take us out of the channel loop */
|
||
CDEBUG(NULL, NULL, "-- Unregistering mISDN Channel Driver --\n");
|
||
|
||
quit = 1;
|
||
pthread_join(chan_tid, NULL);
|
||
|
||
ast_channel_unregister(&lcr_tech);
|
||
|
||
if (mISDN_created) {
|
||
bchannel_deinitialize();
|
||
mISDN_created = 0;
|
||
}
|
||
|
||
if (lcr_sock >= 0) {
|
||
close(lcr_sock);
|
||
lcr_sock = -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
int reload_module(void)
|
||
{
|
||
// reload_config();
|
||
return 0;
|
||
}
|
||
|
||
|
||
#define AST_MODULE "chan_lcr"
|
||
|
||
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Channel driver for Linux-Call-Router Support (ISDN BRI/PRI)",
|
||
.load = load_module,
|
||
.unload = unload_module,
|
||
.reload = reload_module,
|
||
);
|
||
|