-/*****************************************************************************\
-** **
-** Linux Call Router **
-** **
-**---------------------------------------------------------------------------**
-** Copyright: Andreas Eversberg **
-** **
-** mISDN channel handlin for remote application **
-** **
-\*****************************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <poll.h>
-#include <errno.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <netinet/udp.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <sys/socket.h>
-#include <mISDN/mISDNif.h>
-
-#include <mISDN/mISDNcompat.h>
-int __af_isdn = MISDN_AF_ISDN;
-#include <mISDN/q931.h>
-
-#define HAVE_ATTRIBUTE_always_inline 1
-#define HAVE_ARPA_INET_H 1
-#define HAVE_TIMERSUB 1
-
-#include <asterisk/autoconfig.h>
-#include <asterisk/compiler.h>
-#include <asterisk/frame.h>
-
-/* Choose if you want to have chan_lcr for Asterisk 1.4.x or CallWeaver 1.2.x */
-/* #define LCR_FOR_CALLWEAVER */
-
-#ifdef LCR_FOR_CALLWEAVER
-#include <asterisk/phone_no_utils.h>
-#include <asterisk/logger.h>
-#include <asterisk/module.h>
-#include <asterisk/channel.h>
-#endif
-
-#include "extension.h"
-#include "message.h"
-#include "lcrsocket.h"
-#include "cause.h"
-#include "select.h"
-#include "bchannel.h"
-#include "chan_lcr.h"
-#include "callerid.h"
-#include "options.h"
-
-
-#ifndef ISDN_PID_L4_B_USER
-#define ISDN_PID_L4_B_USER 0x440000ff
-#endif
-
-pid_t bchannel_pid;
-
-enum {
- BSTATE_IDLE,
- BSTATE_ACTIVATING,
- BSTATE_ACTIVE,
- BSTATE_DEACTIVATING,
-};
-
-static void bchannel_send_queue(struct bchannel *bchannel);
-
-int bchannel_initialize(void)
-{
- return 0;
-}
-
-void bchannel_deinitialize(void)
-{
-}
-
-/*
- * send control information to the channel (dsp-module)
- */
-static void ph_control(int sock, unsigned int c1, unsigned int c2, char *trace_name, int trace_value, int b_mode)
-{
- unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
- struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
- unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
- int ret;
-
- if (b_mode != 0 && b_mode != 2)
- return;
-
- CDEBUG(NULL, NULL, "Sending PH_CONTROL %s %x,%x\n", trace_name, c1, c2);
- ctrl->prim = PH_CONTROL_REQ;
- ctrl->id = 0;
- *d++ = c1;
- *d++ = c2;
- ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)*2, 0, NULL, 0);
- if (ret < 0)
- CERROR(NULL, NULL, "Failed to send to socket %d\n", sock);
-}
-
-static void ph_control_block(int sock, unsigned int c1, void *c2, int c2_len, char *trace_name, int trace_value, int b_mode)
-{
- unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+c2_len];
- struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
- unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
- int ret;
-
- if (b_mode != 0 && b_mode != 2)
- return;
-
- CDEBUG(NULL, NULL, "Sending PH_CONTROL (block) %s %x\n", trace_name, c1);
- ctrl->prim = PH_CONTROL_REQ;
- ctrl->id = 0;
- *d++ = c1;
- memcpy(d, c2, c2_len);
- ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)+c2_len, 0, NULL, 0);
- if (ret < 0)
- CERROR(NULL, NULL, "Failed to send to socket %d\n", sock);
-}
-
-static int bchannel_handle(struct lcr_fd *fd, unsigned int what, void *instance, int index);
-
-/*
- * create stack
- */
-int bchannel_create(struct bchannel *bchannel, int mode, int queue)
-{
- int ret;
- struct sockaddr_mISDN addr;
-
- if (bchannel->b_sock > -1) {
- CERROR(bchannel->call, NULL, "Socket already created for handle 0x%x\n", bchannel->handle);
- return 0;
- }
-
- /* open socket */
- bchannel->b_mode = (mode & 3);
- switch(bchannel->b_mode) {
- case 0:
- CDEBUG(bchannel->call, NULL, "Open DSP audio\n");
- bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_L2DSP);
- break;
- case 1:
- CDEBUG(bchannel->call, NULL, "Open audio\n");
- bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_RAW);
- break;
- case 2:
- CDEBUG(bchannel->call, NULL, "Open DSP HDLC\n");
- bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_L2DSPHDLC);
- break;
- case 3:
- CDEBUG(bchannel->call, NULL, "Open HDLC\n");
- bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_HDLC);
- break;
- }
- if (bchannel->b_sock < 0) {
- CERROR(bchannel->call, NULL, "Failed to open bchannel-socket for handle 0x%x with mISDN-DSP layer. Did you load mISDN_dsp.ko?\n", bchannel->handle);
- return 0;
- }
-
- /* register fd */
- memset(&bchannel->lcr_fd, 0, sizeof(bchannel->lcr_fd));
- bchannel->lcr_fd.fd = bchannel->b_sock;
- register_fd(&bchannel->lcr_fd, LCR_FD_READ | LCR_FD_EXCEPT, bchannel_handle, bchannel, 0);
-
- /* bind socket to bchannel */
- addr.family = AF_ISDN;
- addr.dev = (bchannel->handle>>8);
- addr.channel = bchannel->handle & 0xff;
- ret = bind(bchannel->b_sock, (struct sockaddr *)&addr, sizeof(addr));
- if (ret < 0) {
- CERROR(bchannel->call, NULL, "Failed to bind bchannel-socket for handle 0x%x with mISDN-DSP layer. (port %d, channel %d) Did you load mISDN_dsp.ko?\n", bchannel->handle, addr.dev, addr.channel);
- unregister_fd(&bchannel->lcr_fd);
- close(bchannel->b_sock);
- bchannel->b_sock = -1;
- return 0;
- }
-
- /* queue */
- if (bchannel->b_mode == 1 && queue) {
- bchannel->nodsp_queue_out = 0;
- bchannel->nodsp_queue_in = queue * 8;
- if (bchannel->nodsp_queue_in > QUEUE_BUFFER_MAX-1)
- bchannel->nodsp_queue_in = QUEUE_BUFFER_MAX-1;
- bchannel->nodsp_queue = bchannel->nodsp_queue_in; /* store initial load */
- memset(&bchannel->nodsp_queue_buffer, (options.law=='a')?0x2a:0xff, QUEUE_BUFFER_SIZE);
- bchannel->queue_sent = 0;
- } else
- bchannel->nodsp_queue = 0;
-
- return 1;
-}
-
-
-/*
- * activate / deactivate request
- */
-void bchannel_activate(struct bchannel *bchannel, int activate)
-{
- struct mISDNhead act;
- int ret;
-
- /* activate bchannel */
- CDEBUG(bchannel->call, NULL, "%sActivating B-channel.\n", activate?"":"De-");
- switch(bchannel->b_mode) {
- case 0:
- case 2:
- act.prim = (activate)?DL_ESTABLISH_REQ:DL_RELEASE_REQ;
- break;
- case 1:
- case 3:
- act.prim = (activate)?PH_ACTIVATE_REQ:PH_DEACTIVATE_REQ;
- break;
- }
- act.id = 0;
- ret = sendto(bchannel->b_sock, &act, MISDN_HEADER_LEN, 0, NULL, 0);
- if (ret < 0)
- CERROR(bchannel->call, NULL, "Failed to send to socket %d\n", bchannel->b_sock);
-
- bchannel->b_state = (activate)?BSTATE_ACTIVATING:BSTATE_DEACTIVATING;
-}
-
-
-/*
- * set features
- */
-static void bchannel_activated(struct bchannel *bchannel)
-{
- int sock;
-
- sock = bchannel->b_sock;
-
- /* set dsp features */
- if (bchannel->b_txdata)
- ph_control(sock, (bchannel->b_txdata)?DSP_TXDATA_ON:DSP_TXDATA_OFF, 0, "DSP-TXDATA", bchannel->b_txdata, bchannel->b_mode);
- if (bchannel->b_delay && bchannel->b_mode == 0)
- ph_control(sock, DSP_DELAY, bchannel->b_delay, "DSP-DELAY", bchannel->b_delay, bchannel->b_mode);
- if (bchannel->b_tx_dejitter && bchannel->b_mode == 0)
- ph_control(sock, (bchannel->b_tx_dejitter)?DSP_TX_DEJITTER:DSP_TX_DEJ_OFF, 0, "DSP-TX_DEJITTER", bchannel->b_tx_dejitter, bchannel->b_mode);
- if (bchannel->b_tx_gain && bchannel->b_mode == 0)
- ph_control(sock, DSP_VOL_CHANGE_TX, bchannel->b_tx_gain, "DSP-TX_GAIN", bchannel->b_tx_gain, bchannel->b_mode);
- if (bchannel->b_rx_gain && bchannel->b_mode == 0)
- ph_control(sock, DSP_VOL_CHANGE_RX, bchannel->b_rx_gain, "DSP-RX_GAIN", bchannel->b_rx_gain, bchannel->b_mode);
- if (bchannel->b_pipeline[0] && bchannel->b_mode == 0)
- ph_control_block(sock, DSP_PIPELINE_CFG, bchannel->b_pipeline, strlen(bchannel->b_pipeline)+1, "DSP-PIPELINE", 0, bchannel->b_mode);
- if (bchannel->b_conf)
- ph_control(sock, DSP_CONF_JOIN, bchannel->b_conf, "DSP-CONF", bchannel->b_conf, bchannel->b_mode);
- if (bchannel->b_echo)
- ph_control(sock, DSP_ECHO_ON, 0, "DSP-ECHO", 1, bchannel->b_mode);
- if (bchannel->b_tone && bchannel->b_mode == 0)
- ph_control(sock, DSP_TONE_PATT_ON, bchannel->b_tone, "DSP-TONE", bchannel->b_tone, bchannel->b_mode);
- if (bchannel->b_rxoff)
- ph_control(sock, DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1, bchannel->b_mode);
-// if (bchannel->b_txmix && bchannel->b_mode == 0)
-// ph_control(sock, DSP_MIX_ON, 0, "DSP-MIX", 1, bchannel->b_mode);
- if (bchannel->b_dtmf && bchannel->b_mode == 0)
- ph_control(sock, DTMF_TONE_START, 0, "DSP-DTMF", 1, bchannel->b_mode);
- if (bchannel->b_bf_len && bchannel->b_mode == 0)
- ph_control_block(sock, DSP_BF_ENABLE_KEY, bchannel->b_bf_key, bchannel->b_bf_len, "DSP-CRYPT", bchannel->b_bf_len, bchannel->b_mode);
- if (bchannel->b_conf)
- ph_control(sock, DSP_CONF_JOIN, bchannel->b_conf, "DSP-CONF", bchannel->b_conf, bchannel->b_mode);
-
- bchannel->b_state = BSTATE_ACTIVE;
-}
-
-/*
- * destroy stack
- */
-void bchannel_destroy(struct bchannel *bchannel)
-{
- if (bchannel->b_sock > -1) {
- unregister_fd(&bchannel->lcr_fd);
- close(bchannel->b_sock);
- bchannel->b_sock = -1;
- }
- bchannel->b_state = BSTATE_IDLE;
-}
-
-
-/*
- * whenever we get audio data from bchannel, we process it here
- */
-static void bchannel_receive(struct bchannel *bchannel, unsigned char *buffer, int len)
-{
- struct mISDNhead *hh = (struct mISDNhead *)buffer;
- unsigned char *data = buffer + MISDN_HEADER_LEN;
- unsigned int cont = *((unsigned int *)data);
- unsigned char *d;
- int i;
- struct bchannel *remote_bchannel;
- int ret;
-
- if (hh->prim == PH_CONTROL_IND) {
- /* non dsp -> ignore ph_control */
- if (bchannel->b_mode == 1 || bchannel->b_mode == 3)
- return;
- if (len < 4) {
- CERROR(bchannel->call, NULL, "SHORT READ OF PH_CONTROL INDICATION\n");
- return;
- }
- if ((cont&(~DTMF_TONE_MASK)) == DTMF_TONE_VAL) {
- if (bchannel->call)
- lcr_in_dtmf(bchannel->call, cont & DTMF_TONE_MASK);
- return;
- }
- switch(cont) {
- case DSP_BF_REJECT:
- CERROR(bchannel->call, NULL, "Blowfish crypt rejected.\n");
- break;
-
- case DSP_BF_ACCEPT:
- CDEBUG(bchannel->call, NULL, "Blowfish crypt enabled.\n");
- break;
-
- default:
- CDEBUG(bchannel->call, NULL, "Unhandled bchannel control 0x%x.\n", cont);
- }
- return;
- }
- if (hh->prim == PH_DATA_REQ) {
- if (!bchannel->b_txdata) {
- /* if tx is off, it may happen that fifos send us pending informations, we just ignore them */
- CDEBUG(bchannel->call, NULL, "ignoring tx data, because 'txdata' is turned off\n");
- return;
- }
- return;
- }
- if (hh->prim != PH_DATA_IND && hh->prim != DL_DATA_IND) {
- CERROR(bchannel->call, NULL, "Bchannel received unknown primitve: 0x%lx\n", hh->prim);
- return;
- }
- /* if calls are bridged, but not via dsp (no b_conf), forward here */
- if (!bchannel->b_conf
- && bchannel->call
- && bchannel->call->bridge_call
- && bchannel->call->bridge_call->bchannel) {
- remote_bchannel = bchannel->call->bridge_call->bchannel;
-#if 0
- int i = 0;
- char string[4096] = "";
- while(i < len) {
- sprintf(string+strlen(string), " %02x", data[i]);
- i++;
- }
- CDEBUG(remote_bchannel->call, NULL, "Forwarding packet%s\n", string);
-#endif
- hh->prim = PH_DATA_REQ;
- hh->id = 0;
- ret = sendto(remote_bchannel->b_sock, buffer, MISDN_HEADER_LEN+len, 0, NULL, 0);
- if (ret < 0)
- CERROR(remote_bchannel->call, NULL, "Failed to send to socket %d\n", bchannel->b_sock);
- return;
- }
- /* calls will not process any audio data unless
- * the call is connected OR interface features audio during call setup.
- */
-
- /* if rx is off, it may happen that fifos send us pending informations, we just ignore them */
- if (bchannel->b_rxoff) {
- CDEBUG(bchannel->call, NULL, "ignoring data, because rx is turned off\n");
- return;
- }
-
- if (!bchannel->call) {
- CDEBUG(bchannel->call, NULL, "ignoring data, because no call associated with bchannel\n");
- return;
- }
- if (!bchannel->call->audiopath) {
- /* return, because we have no audio from port */
- return;
- }
-
- if (bchannel->call->pipe[1] < 0) {
- /* nobody there */
- return;
- }
-
- /* if no hdlc */
- if (bchannel->b_mode == 0 || bchannel->b_mode == 1) {
- d = data;
- for (i = 0; i < len; i++) {
- *d = flip_bits[*d];
- d++;
- }
- }
-
-
- len = write(bchannel->call->pipe[1], data, len);
- if (len < 0)
- goto errout;
-
- return;
- errout:
- close(bchannel->call->pipe[1]);
- bchannel->call->pipe[1] = -1;
- CDEBUG(bchannel->call, NULL, "broken pipe on bchannel pipe\n");
-}
-
-
-/*
- * transmit data to bchannel
- */
-void bchannel_transmit(struct bchannel *bchannel, unsigned char *data, int len)
-{
- unsigned char buff[1024 + MISDN_HEADER_LEN], *p = buff + MISDN_HEADER_LEN;
- struct mISDNhead *frm = (struct mISDNhead *)buff;
- int ret;
- int i;
- int space, in;
-
- if (bchannel->b_state != BSTATE_ACTIVE)
- return;
- if (len > 1024 || len < 1)
- return;
- if (data) {
- switch(bchannel->b_mode) {
- case 0:
- for (i = 0; i < len; i++)
- *p++ = flip_bits[*data++];
- frm->prim = DL_DATA_REQ;
- break;
- case 1:
- for (i = 0; i < len; i++)
- *p++ = flip_bits[*data++];
- frm->prim = PH_DATA_REQ;
- break;
- case 2:
- memcpy(p, data, len);
- frm->prim = DL_DATA_REQ;
- break;
- case 3:
- memcpy(p, data, len);
- frm->prim = PH_DATA_REQ;
- break;
- }
- } else
- memset(p, flip_bits[(options.law=='a')?0x2a:0xff], len);
- frm->id = 0;
-#ifdef SEAMLESS_TEST
- unsigned char test_tone[8] = {0x2a, 0x24, 0xb4, 0x24, 0x2a, 0x25, 0xb5, 0x25};
- p = buff + MISDN_HEADER_LEN;
- for (i = 0; i < len; i++)
- *p++ = test_tone[(bchannel->test + i) & 7];
- bchannel->test = (bchannel->test + len) & 7;
-#endif
- if (bchannel->nodsp_queue) {
- space = (bchannel->nodsp_queue_out - bchannel->nodsp_queue_in - 1) & (QUEUE_BUFFER_SIZE - 1);
- if (len > space) {
- CERROR(bchannel->call, NULL, "Queue buffer overflow, space is %d, len is %d.\n", space, len);
- return;
- }
- p = buff + MISDN_HEADER_LEN;
- in = bchannel->nodsp_queue_in;
- for (i = 0; i < len; i++) {
- bchannel->nodsp_queue_buffer[in] = *p++;
- in = (in + 1) & (QUEUE_BUFFER_SIZE - 1);
- }
- bchannel->nodsp_queue_in = in;
- if (bchannel->queue_sent == 0) /* if there is no pending data */
- bchannel_send_queue(bchannel);
- return;
- }
- ret = sendto(bchannel->b_sock, buff, MISDN_HEADER_LEN+len, 0, NULL, 0);
- if (ret < 0)
- CERROR(bchannel->call, NULL, "Failed to send to socket %d\n", bchannel->b_sock);
-}
-
-
-/*
- * in case of a send queue, we send from that queue rather directly
- */
-static void bchannel_send_queue(struct bchannel *bchannel)
-{
- unsigned char buff[1024 + MISDN_HEADER_LEN], *p = buff + MISDN_HEADER_LEN;
- struct mISDNhead *frm = (struct mISDNhead *)buff;
- int ret;
- int i;
- int len, out;
-
- len = (bchannel->nodsp_queue_in - bchannel->nodsp_queue_out) & (QUEUE_BUFFER_SIZE - 1);
- if (len == 0)
- return; /* mISDN driver received all load */
-#if 0
- printf("%4d:(%s|%s)\n", bchannel->nodsp_queue_out,
- "----------------------------------------------------------------"+64-len/(8192/64),
- " "+len/(8192/64));
-#endif
- if (len > 1024)
- len = 1024;
- frm->prim = PH_DATA_REQ;
- frm->id = 0;
- out = bchannel->nodsp_queue_out;
- for (i = 0; i < len; i++) {
- *p++ = bchannel->nodsp_queue_buffer[out];
- out = (out + 1) & (QUEUE_BUFFER_SIZE - 1);
- }
- bchannel->nodsp_queue_out = out;
- ret = sendto(bchannel->b_sock, buff, MISDN_HEADER_LEN+len, 0, NULL, 0);
- if (ret < 0)
- CERROR(bchannel->call, NULL, "Failed to send to socket %d\n", bchannel->b_sock);
- else
- bchannel->queue_sent = 1;
-}
-
-
-/*
- * join bchannel
- */
-void bchannel_join(struct bchannel *bchannel, unsigned short id)
-{
- int sock;
-
- sock = bchannel->b_sock;
- if (id) {
- bchannel->b_conf = (id<<16) + bchannel_pid;
- bchannel->b_rxoff = 1;
- } else {
- bchannel->b_conf = 0;
- bchannel->b_rxoff = 0;
- }
- if (bchannel->b_state == BSTATE_ACTIVE) {
- ph_control(sock, DSP_RECEIVE_OFF, bchannel->b_rxoff, "DSP-RX_OFF", bchannel->b_conf, bchannel->b_mode);
- ph_control(sock, DSP_CONF_JOIN, bchannel->b_conf, "DSP-CONF", bchannel->b_conf, bchannel->b_mode);
- }
-}
-
-
-/*
- * dtmf bchannel
- */
-void bchannel_dtmf(struct bchannel *bchannel, int on)
-{
- int sock;
-
- sock = bchannel->b_sock;
- bchannel->b_dtmf = on;
- if (bchannel->b_state == BSTATE_ACTIVE && bchannel->b_mode == 0)
- ph_control(sock, on?DTMF_TONE_START:DTMF_TONE_STOP, 0, "DSP-DTMF", 1, bchannel->b_mode);
-}
-
-
-/*
- * blowfish bchannel
- */
-void bchannel_blowfish(struct bchannel *bchannel, unsigned char *key, int len)
-{
- int sock;
-
- sock = bchannel->b_sock;
- memcpy(bchannel->b_bf_key, key, len);
- bchannel->b_bf_len = len;
- if (bchannel->b_state == BSTATE_ACTIVE)
- ph_control_block(sock, DSP_BF_ENABLE_KEY, bchannel->b_bf_key, bchannel->b_bf_len, "DSP-CRYPT", bchannel->b_bf_len, bchannel->b_mode);
-}
-
-
-/*
- * pipeline bchannel
- */
-void bchannel_pipeline(struct bchannel *bchannel, char *pipeline)
-{
- int sock;
-
- sock = bchannel->b_sock;
- strncpy(bchannel->b_pipeline, pipeline, sizeof(bchannel->b_pipeline)-1);
- if (bchannel->b_state == BSTATE_ACTIVE)
- ph_control_block(sock, DSP_PIPELINE_CFG, bchannel->b_pipeline, strlen(bchannel->b_pipeline)+1, "DSP-PIPELINE", 0, bchannel->b_mode);
-}
-
-
-/*
- * gain bchannel
- */
-void bchannel_gain(struct bchannel *bchannel, int gain, int tx)
-{
- int sock;
-
- sock = bchannel->b_sock;
- if (tx)
- bchannel->b_tx_gain = gain;
- else
- bchannel->b_rx_gain = gain;
- if (bchannel->b_state == BSTATE_ACTIVE && bchannel->b_mode == 0)
- ph_control(sock, (tx)?DSP_VOL_CHANGE_TX:DSP_VOL_CHANGE_RX, gain, (tx)?"DSP-TX_GAIN":"DSP-RX_GAIN", gain, bchannel->b_mode);
-}
-
-
-/*
- * main loop for processing messages from mISDN
- */
-static int bchannel_handle(struct lcr_fd *fd, unsigned int what, void *instance, int index)
-{
- struct bchannel *bchannel = (struct bchannel *)instance;
- int ret;
- unsigned char buffer[2048+MISDN_HEADER_LEN];
- struct mISDNhead *hh = (struct mISDNhead *)buffer;
-
- ret = recv(bchannel->b_sock, buffer, sizeof(buffer), 0);
- if (ret >= (int)MISDN_HEADER_LEN) {
- switch(hh->prim) {
- /* after a confim, we can send more from queue */
- case PH_DATA_CNF:
- if (bchannel->nodsp_queue) {
- bchannel->queue_sent = 0;
- bchannel_send_queue(bchannel);
- }
- break;
-
- /* we receive audio data, we respond to it AND we send tones */
- case PH_DATA_IND:
- case PH_DATA_REQ:
- case DL_DATA_IND:
- case PH_CONTROL_IND:
- bchannel_receive(bchannel, buffer, ret-MISDN_HEADER_LEN);
- break;
-
- case PH_ACTIVATE_IND:
- case DL_ESTABLISH_IND:
- case PH_ACTIVATE_CNF:
- case DL_ESTABLISH_CNF:
- CDEBUG(bchannel->call, NULL, "DL_ESTABLISH confirm: bchannel is now activated (socket %d).\n", bchannel->b_sock);
- bchannel_activated(bchannel);
- break;
-
- case PH_DEACTIVATE_IND:
- case DL_RELEASE_IND:
- case PH_DEACTIVATE_CNF:
- case DL_RELEASE_CNF:
- CDEBUG(bchannel->call, NULL, "DL_RELEASE confirm: bchannel is now de-activated (socket %d).\n", bchannel->b_sock);
-// bchannel_deactivated(bchannel);
- break;
-
- default:
- CERROR(bchannel->call, NULL, "child message not handled: prim(0x%x) socket(%d) data len(%d)\n", hh->prim, bchannel->b_sock, ret - MISDN_HEADER_LEN);
- }
- } else {
-// if (ret < 0 && errno != EWOULDBLOCK)
- CERROR(bchannel->call, NULL, "Read from socket %d failed with return code %d\n", bchannel->b_sock, ret);
- }
-
- /* if we received at least one b-frame, we will return 1 */
- return 0;
-}
-
-
-/*
- * bchannel channel handling
- */
-struct bchannel *bchannel_first = NULL;
-struct bchannel *find_bchannel_handle(unsigned int handle)
-{
- struct bchannel *bchannel = bchannel_first;
-
- while(bchannel) {
- if (bchannel->handle == handle)
- break;
- bchannel = bchannel->next;
- }
- return bchannel;
-}
-
-#if 0
-struct bchannel *find_bchannel_ref(unsigned int ref)
-{
- struct bchannel *bchannel = bchannel_first;
-
- while(bchannel) {
- if (bchannel->ref == ref)
- break;
- bchannel = bchannel->next;
- }
- return bchannel;
-}
-#endif
-
-struct bchannel *alloc_bchannel(unsigned int handle)
-{
- struct bchannel **bchannelp = &bchannel_first;
-
- while(*bchannelp)
- bchannelp = &((*bchannelp)->next);
-
- *bchannelp = (struct bchannel *)calloc(1, sizeof(struct bchannel));
- if (!*bchannelp)
- return NULL;
- (*bchannelp)->handle = handle;
- (*bchannelp)->b_state = BSTATE_IDLE;
- (*bchannelp)->b_sock = -1;
-
- return *bchannelp;
-}
-
-void free_bchannel(struct bchannel *bchannel)
-{
- struct bchannel **temp = &bchannel_first;
-
- while(*temp) {
- if (*temp == bchannel) {
- *temp = (*temp)->next;
- if (bchannel->b_sock > -1)
- bchannel_destroy(bchannel);
- if (bchannel->call) {
- if (bchannel->call->bchannel)
- bchannel->call->bchannel = NULL;
- }
- free(bchannel);
- return;
- }
- temp = &((*temp)->next);
- }
-}
-
-
projects / lcr.git / commitdiff