2636 lines
71 KiB
C
2636 lines
71 KiB
C
/*****************************************************************************\
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** **
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** Linux Call Router **
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** **
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**---------------------------------------------------------------------------**
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** Copyright: Andreas Eversberg **
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** **
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** Asterisk socket client **
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** **
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\*****************************************************************************/
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/*
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Registering to LCR:
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To connect, open an LCR socket and send a MESSAGE_HELLO to socket with
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the application name. This name is unique an can be used for routing calls.
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Now the channel driver is linked to LCR and can receive and make calls.
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Call is initiated by LCR:
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If a call is received from LCR, a MESSAGE_NEWREF is received first.
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The ref_was_assigned ist set to 1.
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A new chan_call instance is created. The call reference (ref) is given by
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the received MESSAGE_NEWREF. The state is CHAN_LCR_STATE_IN_PREPARE.
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After receiving MESSAGE_SETUP from LCR, the ast_channel instance is created
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using ast_channel_alloc(1). The setup information is given to asterisk.
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The new Asterisk instance pointer (ast) is stored to chan_call structure.
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The state changes to CHAN_LCR_STATE_IN_SETUP.
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Call is initiated by Asterisk:
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If a call is requested from Asterisk, a new chan_call instance is created.
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The new Asterisk instance pointer (ast) is stored to chan_call structure.
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The current call ref is set to 0, the state is CHAN_LCR_STATE_OUT_PREPARE.
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If the call is received (lcr_call) A MESSAGE_NEWREF is sent to LCR requesting
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a new call reference (ref).
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The ref_was_assigned ist set to 1.
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Further dialing information is queued.
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After the new callref is received by special MESSAGE_NEWREF reply, new ref
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is stored in the chan_call structure.
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The setup information is sent to LCR using MESSAGE_SETUP.
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The state changes to CHAN_LCR_STATE_OUT_SETUP.
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Call is in process:
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During call process, messages are received and sent.
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The state changes accordingly.
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Any message is allowed to be sent to LCR at any time except MESSAGE_RELEASE.
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If a MESSAGE_OVERLAP is received, further dialing is required.
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Queued dialing information, if any, is sent to LCR using MESSAGE_DIALING.
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In this case, the state changes to CHAN_LCR_STATE_OUT_DIALING.
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Call is released by LCR:
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A MESSAGE_RELEASE is received with the call reference (ref) to be released.
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The current ref is set to 0, to indicate released reference.
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The ref_was_assigned==1 shows that there is no other ref to be assigned.
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The state changes to CHAN_LCR_STATE_RELEASE.
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ast_queue_hangup() is called, if asterisk instance (ast) exists, if not,
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the chan_call instance is destroyed.
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After lcr_hangup() is called-back by Asterisk, the chan_call instance
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is destroyed, because the current ref is set to 0 and the state equals
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CHAN_LCR_STATE_RELEASE.
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If the ref is 0 and the state is not CHAN_LCR_STATE_RELEASE, see the proceedure
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"Call is released by Asterisk".
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Call is released by Asterisk:
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lcr_hangup() is called-back by Asterisk. If the call reference (ref) is set,
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a MESSAGE_RELEASE is sent to LCR and the chan_call instance is destroyed.
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If the ref is 0 and the state is not CHAN_LCR_STATE_RELEASE, the new state is
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set to CHAN_LCR_STATE_RELEASE.
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The ref_was_assigned==0 shows that a ref is still requested.
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Later, if the MESSAGE_NEWREF reply is received, a MESSAGE_RELEASE is sent to
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LCR and the chan_call instance is destroyed.
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If the ref is 0 and the state is CHAN_LCR_STATE_RELEASE, see the proceedure
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"Call is released by LCR".
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Locking issues:
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The deadlocking problem:
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- chan_lcr locks chan_lock and waits inside ast_queue_xxxx() for ast_channel
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to be unlocked.
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- ast_channel thread locks ast_channel and calls a tech function and waits
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there for chan_lock to be unlocked.
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The solution:
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Never call ast_queue_xxxx() if ast_channel is not locked and don't wait until
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ast_channel can be locked. All messages to asterisk are queued inside call
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instance and will be handled using a try-lock to get ast_channel lock.
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If it succeeds to lock ast_channel, the ast_queue_xxxx can safely called even
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if the lock is incremented and decremented there.
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Exception: Calling ast_queue_frame inside ast->tech->read is safe, because
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it is called from ast_channel process which has already locked ast_channel.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <time.h>
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//#include <signal.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <semaphore.h>
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#define HAVE_ATTRIBUTE_always_inline 1
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#define HAVE_ARPA_INET_H 1
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#define HAVE_TIMERSUB 1
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#include <asterisk/compiler.h>
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#include <asterisk/buildopts.h>
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#include <asterisk/module.h>
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#include <asterisk/channel.h>
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#include <asterisk/config.h>
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#include <asterisk/logger.h>
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#include <asterisk/pbx.h>
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#include <asterisk/options.h>
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#include <asterisk/io.h>
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#include <asterisk/frame.h>
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#include <asterisk/translate.h>
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#include <asterisk/cli.h>
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#include <asterisk/musiconhold.h>
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#include <asterisk/dsp.h>
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#include <asterisk/translate.h>
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#include <asterisk/file.h>
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#include <asterisk/callerid.h>
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#include <asterisk/indications.h>
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#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"
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#include "callerid.h"
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#include "lcrsocket.h"
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#include "cause.h"
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#include "bchannel.h"
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#include "options.h"
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#include "chan_lcr.h"
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CHAN_LCR_STATE // state description structure
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MESSAGES // message text
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unsigned char flip_bits[256];
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int lcr_debug=1;
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int mISDN_created=1;
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char lcr_type[]="lcr";
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pthread_t chan_tid;
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ast_mutex_t chan_lock; /* global lock */
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ast_mutex_t log_lock; /* logging log */
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int quit;
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int glob_channel = 0;
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int lcr_sock = -1;
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struct admin_list {
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struct admin_list *next;
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struct admin_message msg;
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} *admin_first = NULL;
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static struct ast_channel_tech lcr_tech;
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/*
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* logging
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*/
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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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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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if (call)
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sprintf(call_text, "%d", 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);
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ast_mutex_unlock(&log_lock);
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}
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/*
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* channel and call instances
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*/
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struct chan_call *call_first;
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/*
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* find call by ref
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* special case: 0: find new ref, that has not been assigned a ref yet
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*/
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struct chan_call *find_call_ref(unsigned int ref)
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{
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struct chan_call *call = call_first;
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int assigned = (ref > 0);
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while(call)
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{
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if (call->ref == ref && call->ref_was_assigned == assigned)
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break;
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call = call->next;
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}
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return(call);
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}
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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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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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if (call->trans)
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ast_translator_free_path(call->trans);
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if (call->dsp)
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ast_dsp_free(call->dsp);
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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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{
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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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fcntl((*callp)->pipe[0], F_SETFL, O_NONBLOCK);
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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)
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{
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call = call_first;
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while(call)
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{
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if (call->bridge_id == id)
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break;
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call = call->next;
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}
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if (!call)
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break;
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id++;
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}
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CDEBUG(NULL, NULL, "New bridge ID %d.\n", id);
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return(id);
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}
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/*
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* enque message to LCR
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*/
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int send_message(int message_type, unsigned int ref, union parameter *param)
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{
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struct admin_list *admin, **adminp;
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if (lcr_sock < 0) {
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CDEBUG(NULL, NULL, "Ignoring message %d, because socket is closed.\n", message_type);
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return -1;
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}
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CDEBUG(NULL, NULL, "Sending %s to socket.\n", messages_txt[message_type]);
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adminp = &admin_first;
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while(*adminp)
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adminp = &((*adminp)->next);
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admin = (struct admin_list *)calloc(1, sizeof(struct admin_list));
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if (!admin) {
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CERROR(NULL, NULL, "No memory for message to LCR.\n");
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return -1;
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}
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*adminp = admin;
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admin->msg.message = ADMIN_MESSAGE;
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admin->msg.u.msg.type = message_type;
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admin->msg.u.msg.ref = ref;
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memcpy(&admin->msg.u.msg.param, param, sizeof(union parameter));
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return(0);
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}
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/*
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* apply options (in locked state)
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*/
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void apply_opt(struct chan_call *call, char *data)
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{
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union parameter newparam;
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char string[1024], *p = string, *opt, *key;
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int gain, i;
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if (!data[0])
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return; // no opts
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strncpy(string, data, sizeof(string)-1);
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string[sizeof(string)-1] = '\0';
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/* parse options */
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while((opt = strsep(&p, ":")))
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{
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switch(opt[0]) {
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case 'd':
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if (opt[1] == '\0') {
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CERROR(call, call->ast, "Option 'd' (display) expects parameter.\n", opt);
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break;
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}
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CDEBUG(call, call->ast, "Option 'd' (display) with text '%s'.\n", opt+1);
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if (call->state == CHAN_LCR_STATE_OUT_PREPARE)
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strncpy(call->display, opt+1, sizeof(call->display)-1);
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else {
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memset(&newparam, 0, sizeof(union parameter));
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strncpy(newparam.notifyinfo.display, opt+1, sizeof(newparam.notifyinfo.display)-1);
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send_message(MESSAGE_NOTIFY, call->ref, &newparam);
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}
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break;
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case 'n':
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if (opt[1] != '\0') {
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CERROR(call, call->ast, "Option 'n' (no DTMF) expects no parameter.\n", opt);
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break;
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}
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CDEBUG(call, call->ast, "Option 'n' (no DTMF).\n");
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call->no_dtmf = 1;
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break;
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case 'c':
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if (opt[1] == '\0') {
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CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter.\n", opt);
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break;
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}
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key = opt+1;
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/* check for 0xXXXX... type of key */
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if (!!strncmp((char *)key, "0x", 2)) {
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CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter starting with '0x'.\n", opt);
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break;
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}
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key+=2;
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if (strlen(key) > 56*2 || (strlen(key) % 1)) {
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CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter with max 56 bytes ('0x' + 112 characters)\n", opt);
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break;
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}
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i = 0;
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while(*key)
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{
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if (*key>='0' && *key<='9')
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call->bf_key[i] = (*key-'0') << 8;
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else if (*key>='a' && *key<='f')
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call->bf_key[i] = (*key-'a'+10) << 8;
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else if (*key>='A' && *key<='F')
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call->bf_key[i] = (*key-'A'+10) << 8;
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else
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break;
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key++;
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if (*key>='0' && *key<='9')
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call->bf_key[i] += (*key - '0');
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else if (*key>='a' && *key<='f')
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call->bf_key[i] += (*key - 'a' + 10);
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else if (*key>='A' && *key<='F')
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call->bf_key[i] += (*key - 'A' + 10);
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else
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break;
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key++;
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i++;
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}
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if (*key) {
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CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter with hex values 0-9,a-f.\n");
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break;
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}
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call->bf_len = i;
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CDEBUG(call, call->ast, "Option 'c' (encrypt) blowfish key '%s' (len=%d).\n", opt+1, i);
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if (call->bchannel)
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bchannel_blowfish(call->bchannel, call->bf_key, call->bf_len);
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break;
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case 'h':
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if (opt[1] != '\0') {
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CERROR(call, call->ast, "Option 'h' (HDLC) expects no parameter.\n", opt);
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break;
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}
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CDEBUG(call, call->ast, "Option 'h' (HDLC).\n");
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if (!call->hdlc)
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call->hdlc = 1;
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break;
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case 't':
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if (opt[1] != '\0') {
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CERROR(call, call->ast, "Option 't' (no_dsp) expects no parameter.\n", opt);
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break;
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}
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CDEBUG(call, call->ast, "Option 't' (no dsp).\n");
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if (!call->nodsp)
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call->nodsp = 1;
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break;
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case 'e':
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if (opt[1] == '\0') {
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CERROR(call, call->ast, "Option 'e' (echo cancel) expects parameter.\n", opt);
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break;
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}
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CDEBUG(call, call->ast, "Option 'e' (echo cancel) with config '%s'.\n", opt+1);
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strncpy(call->pipeline, opt+1, sizeof(call->pipeline)-1);
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if (call->bchannel)
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bchannel_pipeline(call->bchannel, call->pipeline);
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break;
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case 'f':
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if (opt[1] == '\0') {
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CERROR(call, call->ast, "Option 'f' (faxdetect) expects parameter.\n", opt);
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break;
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}
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call->faxdetect=atoi(opt+1);
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if (!call->dsp)
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call->dsp=ast_dsp_new();
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if (call->dsp) {
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ast_dsp_set_features(call->dsp, DSP_FEATURE_DTMF_DETECT| DSP_FEATURE_FAX_DETECT);
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if (!call->trans)
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call->trans=ast_translator_build_path(AST_FORMAT_SLINEAR, (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW);
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}
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CDEBUG(call, call->ast, "Option 'f' (faxdetect) with config '%s'.\n", call->faxdetect);
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break;
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case 'r':
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if (opt[1] != '\0') {
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CERROR(call, call->ast, "Option 'r' (re-buffer 160 bytes) expects no parameter.\n", opt);
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break;
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}
|
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CDEBUG(call, call->ast, "Option 'r' (re-buffer 160 bytes)");
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call->rebuffer = 1;
|
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break;
|
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case 's':
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if (opt[1] != '\0') {
|
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CERROR(call, call->ast, "Option 's' (inband DTMF) expects no parameter.\n", opt);
|
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break;
|
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}
|
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CDEBUG(call, call->ast, "Option 's' (inband DTMF).\n");
|
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call->inband_dtmf = 1;
|
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break;
|
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case 'v':
|
|
if (opt[1] != 'r' && opt[1] != 't') {
|
|
CERROR(call, call->ast, "Option 'v' (volume) expects parameter.\n", opt);
|
|
break;
|
|
}
|
|
gain = atoi(opt+2);
|
|
if (gain < -8 || gain >8) {
|
|
CERROR(call, call->ast, "Option 'v' (volume) expects parameter in range of -8 through 8.\n");
|
|
break;
|
|
}
|
|
CDEBUG(call, call->ast, "Option 'v' (volume) with gain 2^%d.\n", gain);
|
|
if (opt[1] == 'r') {
|
|
call->rx_gain = gain;
|
|
if (call->bchannel)
|
|
bchannel_gain(call->bchannel, call->rx_gain, 0);
|
|
} else {
|
|
call->tx_gain = gain;
|
|
if (call->bchannel)
|
|
bchannel_gain(call->bchannel, call->tx_gain, 1);
|
|
}
|
|
break;
|
|
default:
|
|
CERROR(call, call->ast, "Option '%s' unknown.\n", opt);
|
|
}
|
|
}
|
|
|
|
/* re-open, if bchannel is created */
|
|
if (call->bchannel && call->bchannel->b_sock > -1) {
|
|
bchannel_destroy(call->bchannel);
|
|
if (bchannel_create(call->bchannel, ((call->nodsp || call->faxdetect > 0)?1:0) + ((call->hdlc)?2:0)))
|
|
bchannel_activate(call->bchannel, 1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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, cid=%s)\n", call->interface, call->dialstring, call->cid_num);
|
|
|
|
/* 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;
|
|
strncpy(newparam.setup.callerinfo.display, call->display, sizeof(newparam.setup.callerinfo.display)-1);
|
|
call->display[0] = '\0';
|
|
if (call->cid_num[0])
|
|
strncpy(newparam.setup.callerinfo.id, call->cid_num, sizeof(newparam.setup.callerinfo.id)-1);
|
|
if (call->cid_name[0])
|
|
strncpy(newparam.setup.callerinfo.name, call->cid_name, sizeof(newparam.setup.callerinfo.name)-1);
|
|
if (call->cid_rdnis[0])
|
|
{
|
|
strncpy(newparam.setup.redirinfo.id, call->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_RESTRICTED:
|
|
newparam.setup.callerinfo.present = INFO_PRESENT_RESTRICTED;
|
|
break;
|
|
case AST_PRES_UNAVAILABLE:
|
|
newparam.setup.callerinfo.present = INFO_PRESENT_NOTAVAIL;
|
|
break;
|
|
case AST_PRES_ALLOWED:
|
|
default:
|
|
newparam.setup.callerinfo.present = INFO_PRESENT_ALLOWED;
|
|
}
|
|
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_mode = INFO_BMODE_CIRCUIT;
|
|
if (call->hdlc)
|
|
newparam.setup.capainfo.source_mode = B_MODE_HDLC;
|
|
else {
|
|
newparam.setup.capainfo.source_mode = B_MODE_TRANSPARENT;
|
|
newparam.setup.capainfo.bearer_info1 = (options.law=='a')?3:2;
|
|
}
|
|
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 bridging.\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;
|
|
char *exten = ast->exten;
|
|
if (!*exten)
|
|
exten = "s";
|
|
|
|
CDEBUG(call, ast, "Try to start pbx. (exten=%s context=%s complete=%s)\n", exten, ast->context, complete?"yes":"no");
|
|
|
|
if (complete)
|
|
{
|
|
/* if not match */
|
|
if (!ast_canmatch_extension(ast, ast->context, exten, 1, call->oad))
|
|
{
|
|
CDEBUG(call, ast, "Got 'sending complete', but extension '%s' will not match at context '%s' - releasing.\n", exten, ast->context);
|
|
cause = 1;
|
|
goto release;
|
|
}
|
|
if (!ast_exists_extension(ast, ast->context, 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", 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, 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, 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 (!*ast->exten) {
|
|
/* if can match */
|
|
CDEBUG(call, ast, "There is no 's' extension (and we tried to match it implicitly). 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;
|
|
ast_setstate(ast, AST_STATE_RING);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
/* enable hdlc if transcap is data */
|
|
if (param->setup.capainfo.source_mode == B_MODE_HDLC)
|
|
call->hdlc = 1;
|
|
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;
|
|
|
|
if (!call->pbx_started)
|
|
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;
|
|
/* queue event for asterisk */
|
|
if (call->ast && call->pbx_started)
|
|
strncat(call->queue_string, "P", sizeof(call->queue_string)-1);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
/* queue event to asterisk */
|
|
if (call->ast && call->pbx_started)
|
|
strncat(call->queue_string, "R", sizeof(call->queue_string)-1);
|
|
}
|
|
|
|
/*
|
|
* 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));
|
|
/* queue event to asterisk */
|
|
if (call->ast && call->pbx_started)
|
|
strncat(call->queue_string, "A", sizeof(call->queue_string)-1);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
/* queue release asterisk */
|
|
if (ast)
|
|
{
|
|
ast->hangupcause = call->cause;
|
|
if (call->pbx_started)
|
|
strcpy(call->queue_string, "H"); // overwrite other indications
|
|
else {
|
|
ast_hangup(ast); // call will be destroyed here
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* incoming release 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, queue hangup, else we are done */
|
|
if (ast)
|
|
{
|
|
ast->hangupcause = call->cause;
|
|
if (call->pbx_started)
|
|
strcpy(call->queue_string, "H");
|
|
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;
|
|
|
|
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;
|
|
}
|
|
|
|
/* change dailing state after setup */
|
|
if (call->state == CHAN_LCR_STATE_IN_SETUP) {
|
|
CDEBUG(call, call->ast, "Changing from SETUP to DIALING state.\n");
|
|
call->state = CHAN_LCR_STATE_IN_DIALING;
|
|
// ast_setstate(ast, AST_STATE_DIALING);
|
|
}
|
|
|
|
/* queue digits */
|
|
if (call->state == CHAN_LCR_STATE_IN_DIALING && param->information.id[0])
|
|
strncat(call->queue_string, param->information.id, sizeof(call->queue_string)-1);
|
|
|
|
/* use bridge to forware message not supported by asterisk */
|
|
if (call->state == CHAN_LCR_STATE_CONNECT) {
|
|
CDEBUG(call, call->ast, "Call is connected, bridging.\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)
|
|
{
|
|
union parameter newparam;
|
|
|
|
CDEBUG(call, call->ast, "Incomming notify from LCR. (notify=%d)\n", param->notifyinfo.notify);
|
|
|
|
/* request bchannel, if call is resumed and we don't have it */
|
|
if (param->notifyinfo.notify == INFO_NOTIFY_USER_RESUMED && !call->bchannel && call->ref) {
|
|
CDEBUG(call, call->ast, "Reqesting bchannel at resume.\n");
|
|
memset(&newparam, 0, sizeof(union parameter));
|
|
newparam.bchannel.type = BCHANNEL_REQUEST;
|
|
send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
|
|
}
|
|
|
|
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 (locked state)
|
|
*/
|
|
void lcr_in_dtmf(struct chan_call *call, int val)
|
|
{
|
|
struct ast_channel *ast = call->ast;
|
|
char digit[2];
|
|
|
|
if (!ast)
|
|
return;
|
|
if (!call->pbx_started)
|
|
return;
|
|
|
|
CDEBUG(call, call->ast, "Recognised DTMF digit '%c'.\n", val);
|
|
digit[0] = val;
|
|
digit[1] = '\0';
|
|
strncat(call->queue_string, digit, sizeof(call->queue_string)-1);
|
|
}
|
|
|
|
/*
|
|
* message received from LCR
|
|
*/
|
|
int receive_message(int message_type, unsigned int 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) for ref %d\n", param->bchannel.handle, ref);
|
|
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 && param->bchannel.crypt_len <= sizeof(bchannel->b_bf_key))
|
|
{
|
|
bchannel->b_bf_len = param->bchannel.crypt_len;
|
|
memcpy(bchannel->b_bf_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);
|
|
if (call->bf_len)
|
|
bchannel_blowfish(bchannel, call->bf_key, call->bf_len);
|
|
if (call->pipeline[0])
|
|
bchannel_pipeline(bchannel, call->pipeline);
|
|
if (call->rx_gain)
|
|
bchannel_gain(bchannel, call->rx_gain, 0);
|
|
if (call->tx_gain)
|
|
bchannel_gain(bchannel, call->tx_gain, 1);
|
|
if (call->bridge_id) {
|
|
CDEBUG(call, call->ast, "Join bchannel, because call is already bridged.\n");
|
|
bchannel_join(bchannel, call->bridge_id);
|
|
}
|
|
/* create only, if call exists, othewhise it bchannel is freed below... */
|
|
if (bchannel_create(bchannel, ((call->nodsp || call->faxdetect > 0)?1:0) + ((call->hdlc)?2:0)))
|
|
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;
|
|
call->ref_was_assigned = 1;
|
|
/* 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;
|
|
call->ref_was_assigned = 1;
|
|
/* 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");
|
|
strcpy(call->queue_string, "H");
|
|
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;
|
|
int conn;
|
|
struct sockaddr_un sock_address;
|
|
unsigned int 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;
|
|
sprintf(sock_address.sun_path, SOCKET_NAME, options.lock);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
|
|
/* sending queue to asterisk */
|
|
static int queue_send(void)
|
|
{
|
|
int work = 0;
|
|
struct chan_call *call;
|
|
struct ast_channel *ast;
|
|
struct ast_frame fr;
|
|
char *p;
|
|
|
|
call = call_first;
|
|
while(call) {
|
|
p = call->queue_string;
|
|
ast = call->ast;
|
|
if (*p && ast) {
|
|
/* there is something to queue */
|
|
if (!ast_channel_trylock(ast)) { /* succeed */
|
|
while(*p) {
|
|
switch (*p) {
|
|
case 'P':
|
|
CDEBUG(call, ast, "Sending queued PROCEEDING to Asterisk.\n");
|
|
ast_queue_control(ast, AST_CONTROL_PROCEEDING);
|
|
break;
|
|
case 'R':
|
|
CDEBUG(call, ast, "Sending queued RINGING to Asterisk.\n");
|
|
ast_queue_control(ast, AST_CONTROL_RINGING);
|
|
ast_setstate(ast, AST_STATE_RINGING);
|
|
break;
|
|
case 'A':
|
|
CDEBUG(call, ast, "Sending queued ANSWER to Asterisk.\n");
|
|
ast_queue_control(ast, AST_CONTROL_ANSWER);
|
|
break;
|
|
case 'H':
|
|
CDEBUG(call, ast, "Sending queued HANGUP to Asterisk.\n");
|
|
ast_queue_hangup(ast);
|
|
break;
|
|
case '1': case '2': case '3': case 'a':
|
|
case '4': case '5': case '6': case 'b':
|
|
case '7': case '8': case '9': case 'c':
|
|
case '*': case '0': case '#': case 'd':
|
|
CDEBUG(call, ast, "Sending queued digit '%c' to Asterisk.\n", *p);
|
|
/* send digit to asterisk */
|
|
memset(&fr, 0, sizeof(fr));
|
|
fr.frametype = AST_FRAME_DTMF_BEGIN;
|
|
fr.subclass = *p;
|
|
fr.delivery = ast_tv(0, 0);
|
|
ast_queue_frame(ast, &fr);
|
|
fr.frametype = AST_FRAME_DTMF_END;
|
|
ast_queue_frame(ast, &fr);
|
|
break;
|
|
default:
|
|
CDEBUG(call, ast, "Ignoring queued digit 0x%02d.\n", *p);
|
|
}
|
|
p++;
|
|
}
|
|
call->queue_string[0] = '\0';
|
|
ast_channel_unlock(ast);
|
|
work = 1;
|
|
}
|
|
}
|
|
call = call->next;
|
|
}
|
|
|
|
return work;
|
|
}
|
|
|
|
/* signal handler */
|
|
void sighandler(int sigset)
|
|
{
|
|
}
|
|
|
|
/* chan_lcr thread */
|
|
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;
|
|
|
|
/* handle messages to asterisk */
|
|
ret = queue_send();
|
|
if (ret)
|
|
work = 1;
|
|
|
|
/* delay if no work done */
|
|
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");
|
|
ast_mutex_unlock(&chan_lock);
|
|
return NULL;
|
|
}
|
|
|
|
/* create call instance */
|
|
call = alloc_call();
|
|
if (!call)
|
|
{
|
|
/* failed to create instance */
|
|
ast_mutex_unlock(&chan_lock);
|
|
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 */
|
|
ast_mutex_unlock(&chan_lock);
|
|
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];
|
|
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);
|
|
apply_opt(call, (char *)opt);
|
|
|
|
ast_mutex_unlock(&chan_lock);
|
|
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);
|
|
|
|
/* set hdlc if capability requires hdlc */
|
|
if (ast->transfercapability == INFO_BC_DATAUNRESTRICTED
|
|
|| ast->transfercapability == INFO_BC_DATARESTRICTED
|
|
|| ast->transfercapability == INFO_BC_VIDEO)
|
|
call->hdlc = 1;
|
|
/* if hdlc is forced by option, we change transcap to data */
|
|
if (call->hdlc
|
|
&& ast->transfercapability != INFO_BC_DATAUNRESTRICTED
|
|
&& ast->transfercapability != INFO_BC_DATARESTRICTED
|
|
&& ast->transfercapability != INFO_BC_VIDEO)
|
|
ast->transfercapability = INFO_BC_DATAUNRESTRICTED;
|
|
|
|
call->cid_num[0] = 0;
|
|
call->cid_name[0] = 0;
|
|
call->cid_rdnis[0] = 0;
|
|
|
|
if (ast->cid.cid_num) if (ast->cid.cid_num[0])
|
|
strncpy(call->cid_num, ast->cid.cid_num,
|
|
sizeof(call->cid_num)-1);
|
|
|
|
if (ast->cid.cid_name) if (ast->cid.cid_name[0])
|
|
strncpy(call->cid_name, ast->cid.cid_name,
|
|
sizeof(call->cid_name)-1);
|
|
if (ast->cid.cid_rdnis) if (ast->cid.cid_rdnis[0])
|
|
strncpy(call->cid_rdnis, ast->cid.cid_rdnis,
|
|
sizeof(call->cid_rdnis)-1);
|
|
|
|
ast_mutex_unlock(&chan_lock);
|
|
return 0;
|
|
}
|
|
|
|
static void send_digit_to_chan(struct ast_channel * ast, char digit )
|
|
{
|
|
static const char* dtmf_tones[] = {
|
|
"!941+1336/100,!0/100", /* 0 */
|
|
"!697+1209/100,!0/100", /* 1 */
|
|
"!697+1336/100,!0/100", /* 2 */
|
|
"!697+1477/100,!0/100", /* 3 */
|
|
"!770+1209/100,!0/100", /* 4 */
|
|
"!770+1336/100,!0/100", /* 5 */
|
|
"!770+1477/100,!0/100", /* 6 */
|
|
"!852+1209/100,!0/100", /* 7 */
|
|
"!852+1336/100,!0/100", /* 8 */
|
|
"!852+1477/100,!0/100", /* 9 */
|
|
"!697+1633/100,!0/100", /* A */
|
|
"!770+1633/100,!0/100", /* B */
|
|
"!852+1633/100,!0/100", /* C */
|
|
"!941+1633/100,!0/100", /* D */
|
|
"!941+1209/100,!0/100", /* * */
|
|
"!941+1477/100,!0/100" }; /* # */
|
|
|
|
if (digit >= '0' && digit <='9')
|
|
ast_playtones_start(ast,0,dtmf_tones[digit-'0'], 0);
|
|
else if (digit >= 'A' && digit <= 'D')
|
|
ast_playtones_start(ast,0,dtmf_tones[digit-'A'+10], 0);
|
|
else if (digit == '*')
|
|
ast_playtones_start(ast,0,dtmf_tones[14], 0);
|
|
else if (digit == '#')
|
|
ast_playtones_start(ast,0,dtmf_tones[15], 0);
|
|
else {
|
|
/* not handled */
|
|
ast_log(LOG_DEBUG, "Unable to handle DTMF tone "
|
|
"'%c' for '%s'\n", digit, ast->name);
|
|
}
|
|
}
|
|
|
|
|
|
static int lcr_digit_begin(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_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
|
|
{
|
|
int inband_dtmf = 0;
|
|
struct chan_call *call;
|
|
|
|
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, "DIGIT END '%c' from Asterisk.\n", digit);
|
|
|
|
if (call->state == CHAN_LCR_STATE_CONNECT && call->inband_dtmf) {
|
|
inband_dtmf = 1;
|
|
}
|
|
|
|
ast_mutex_unlock(&chan_lock);
|
|
|
|
if (inband_dtmf) {
|
|
CDEBUG(call, ast, "-> sending '%c' inband.\n", digit);
|
|
send_digit_to_chan(ast, digit);
|
|
}
|
|
|
|
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 (maybe during lcr_bridge).\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 */
|
|
if (call->state != CHAN_LCR_STATE_CONNECT) {
|
|
memset(&newparam, 0, sizeof(union parameter));
|
|
memcpy(&newparam.connectinfo, &call->connectinfo, sizeof(struct connect_info));
|
|
send_message(MESSAGE_CONNECT, call->ref, &newparam);
|
|
call->state = CHAN_LCR_STATE_CONNECT;
|
|
}
|
|
/* change state */
|
|
/* 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);
|
|
/* enable dtmf */
|
|
if (call->no_dtmf)
|
|
CDEBUG(call, ast, "DTMF is disabled by option.\n");
|
|
else
|
|
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_NORMAL, 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;
|
|
call->ast = NULL;
|
|
}
|
|
}
|
|
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, (unsigned char *)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 len;
|
|
|
|
ast_mutex_lock(&chan_lock);
|
|
call = ast->tech_pvt;
|
|
if (!call) {
|
|
ast_mutex_unlock(&chan_lock);
|
|
return NULL;
|
|
}
|
|
if (call->pipe[0] > -1) {
|
|
if (call->rebuffer && !call->hdlc) {
|
|
len = read(call->pipe[0], call->read_buff, 160);
|
|
} else {
|
|
len = read(call->pipe[0], call->read_buff, sizeof(call->read_buff));
|
|
}
|
|
if (len < 0 && errno == EAGAIN) {
|
|
ast_mutex_unlock(&chan_lock);
|
|
return &ast_null_frame;
|
|
}
|
|
if (len <= 0) {
|
|
close(call->pipe[0]);
|
|
call->pipe[0] = -1;
|
|
ast_mutex_unlock(&chan_lock);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
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);
|
|
(unsigned char *)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);
|
|
|
|
/*start music onhold*/
|
|
ast_moh_start(ast,data,ast->musicclass);
|
|
call->on_hold = 1;
|
|
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);
|
|
|
|
/*stop moh*/
|
|
ast_moh_stop(ast);
|
|
call->on_hold = 0;
|
|
break;
|
|
#ifdef AST_CONTROL_SRCUPDATE
|
|
case AST_CONTROL_SRCUPDATE:
|
|
CDEBUG(call, ast, "Received AST_CONTROL_SRCUPDATE from Asterisk.\n");
|
|
break;
|
|
#endif
|
|
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 *ast)
|
|
{
|
|
struct chan_call *call;
|
|
|
|
if (!ast) {
|
|
return -1;
|
|
}
|
|
|
|
ast_mutex_lock(&chan_lock);
|
|
call = ast->tech_pvt;
|
|
if (!call) {
|
|
CERROR(NULL, ast, "Received fixup from Asterisk, but no call instance exists.\n");
|
|
ast_mutex_unlock(&chan_lock);
|
|
return -1;
|
|
}
|
|
|
|
CDEBUG(call, ast, "Received fixup from Asterisk.\n");
|
|
call->ast = ast;
|
|
ast_mutex_unlock(&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 bridging request from Asterisk.\n");
|
|
|
|
carr[0] = ast1;
|
|
carr[1] = ast2;
|
|
|
|
/* join via dsp (if the channels are currently open) */
|
|
ast_mutex_lock(&chan_lock);
|
|
call1 = ast1->tech_pvt;
|
|
call2 = ast2->tech_pvt;
|
|
if (!call1 || !call2) {
|
|
CDEBUG(NULL, NULL, "Bridge, but we don't have two call instances, exitting.\n");
|
|
ast_mutex_unlock(&chan_lock);
|
|
return AST_BRIDGE_COMPLETE;
|
|
}
|
|
|
|
/* join, if both call instances uses dsp
|
|
ignore the case of fax detection here it may be benificial for ISDN fax machines or pass through.
|
|
*/
|
|
if (!call1->nodsp && !call2->nodsp) {
|
|
CDEBUG(NULL, NULL, "Both calls use DSP, bridging via DSP.\n");
|
|
|
|
/* get bridge id and join */
|
|
bridge_id = new_bridge_id();
|
|
|
|
call1->bridge_id = bridge_id;
|
|
if (call1->bchannel)
|
|
bchannel_join(call1->bchannel, bridge_id);
|
|
|
|
call2->bridge_id = bridge_id;
|
|
if (call2->bchannel)
|
|
bchannel_join(call2->bchannel, bridge_id);
|
|
} else
|
|
if (call1->nodsp && call2->nodsp)
|
|
CDEBUG(NULL, NULL, "Both calls use no DSP, bridging in channel driver.\n");
|
|
else
|
|
CDEBUG(NULL, NULL, "One call uses no DSP, bridging in channel driver.\n");
|
|
call1->bridge_call = call2;
|
|
call2->bridge_call = call1;
|
|
|
|
if (call1->state == CHAN_LCR_STATE_IN_SETUP
|
|
|| call1->state == CHAN_LCR_STATE_IN_DIALING
|
|
|| call1->state == CHAN_LCR_STATE_IN_PROCEEDING
|
|
|| call1->state == CHAN_LCR_STATE_IN_ALERTING) {
|
|
CDEBUG(call1, ast1, "Bridge established before lcr_answer, so we call it ourself: Calling lcr_answer...\n");
|
|
lcr_answer(ast1);
|
|
}
|
|
if (call2->state == CHAN_LCR_STATE_IN_SETUP
|
|
|| call2->state == CHAN_LCR_STATE_IN_DIALING
|
|
|| call2->state == CHAN_LCR_STATE_IN_PROCEEDING
|
|
|| call2->state == CHAN_LCR_STATE_IN_ALERTING) {
|
|
CDEBUG(call2, ast2, "Bridge established before lcr_answer, so we call it ourself: Calling lcr_answer...\n");
|
|
lcr_answer(ast2);
|
|
}
|
|
|
|
/* sometimes SIP phones forget to send RETRIEVE before TRANSFER
|
|
so let's do it for them. Hmpf.
|
|
*/
|
|
|
|
if (call1->on_hold) {
|
|
union parameter newparam;
|
|
|
|
memset(&newparam, 0, sizeof(union parameter));
|
|
newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
|
|
send_message(MESSAGE_NOTIFY, call1->ref, &newparam);
|
|
|
|
call1->on_hold = 0;
|
|
}
|
|
|
|
if (call2->on_hold) {
|
|
union parameter newparam;
|
|
|
|
memset(&newparam, 0, sizeof(union parameter));
|
|
newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
|
|
send_message(MESSAGE_NOTIFY, call2->ref, &newparam);
|
|
|
|
call2->on_hold = 0;
|
|
}
|
|
|
|
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 bridge.\n");
|
|
|
|
/* split channels */
|
|
ast_mutex_lock(&chan_lock);
|
|
call1 = ast1->tech_pvt;
|
|
call2 = ast2->tech_pvt;
|
|
if (call1 && call1->bridge_id)
|
|
{
|
|
call1->bridge_id = 0;
|
|
if (call1->bchannel)
|
|
bchannel_join(call1->bchannel, 0);
|
|
if (call1->bridge_call)
|
|
call1->bridge_call->bridge_call = NULL;
|
|
}
|
|
if (call2 && call1->bridge_id)
|
|
{
|
|
call2->bridge_id = 0;
|
|
if (call2->bchannel)
|
|
bchannel_join(call2->bchannel, 0);
|
|
if (call2->bridge_call)
|
|
call2->bridge_call->bridge_call = NULL;
|
|
}
|
|
call1->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",
|
|
.capabilities = AST_FORMAT_ALAW,
|
|
.requester = lcr_request,
|
|
.send_digit_begin = lcr_digit_begin,
|
|
.send_digit_end = lcr_digit_end,
|
|
.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
|
|
|
|
|
|
|
|
static int lcr_config_exec(struct ast_channel *ast, void *data)
|
|
{
|
|
struct chan_call *call;
|
|
|
|
ast_mutex_lock(&chan_lock);
|
|
CDEBUG(NULL, ast, "Received lcr_config (data=%s)\n", (char *)data);
|
|
/* find channel */
|
|
call = call_first;
|
|
while(call) {
|
|
if (call->ast == ast)
|
|
break;
|
|
call = call->next;
|
|
}
|
|
if (call)
|
|
apply_opt(call, (char *)data);
|
|
else
|
|
CERROR(NULL, ast, "lcr_config app not called by chan_lcr channel.\n");
|
|
|
|
ast_mutex_unlock(&chan_lock);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
ast_register_application("lcr_config", lcr_config_exec, "lcr_config",
|
|
"lcr_config(<opt><optarg>:<opt>:...)\n"
|
|
"Sets LCR opts. and optargs\n"
|
|
"\n"
|
|
"The available options are:\n"
|
|
" d - Send display text on called phone, text is the optarg.\n"
|
|
" n - Don't detect dtmf tones on called channel.\n"
|
|
" h - Force data call (HDLC).\n"
|
|
" t - Disable mISDN_dsp features (required for fax application).\n"
|
|
" f - Adding fax detection. It it timeouts, mISDN_dsp is used.\n"
|
|
" Use time to detect for optarg.\n"
|
|
" c - Make crypted outgoing call, optarg is keyindex.\n"
|
|
" e - Perform echo cancelation on this channel.\n"
|
|
" Takes mISDN pipeline option as optarg.\n"
|
|
" s - Send Non Inband DTMF as inband.\n"
|
|
" vr - rxgain control\n"
|
|
" vt - txgain control\n"
|
|
" Volume changes at factor 2 ^ optarg.\n"
|
|
);
|
|
|
|
|
|
#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);
|
|
#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);
|
|
|
|
ast_unregister_application("lcr_config");
|
|
|
|
|
|
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,
|
|
);
|
|
|