721 lines
20 KiB
C
721 lines
20 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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** mISDN channel handlin for remote application **
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** **
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\*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <poll.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <netinet/udp.h>
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#include <netinet/in.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#include <mISDN/mISDNif.h>
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#include <mISDN/mISDNcompat.h>
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int __af_isdn = MISDN_AF_ISDN;
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#include <mISDN/q931.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/autoconfig.h>
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#include <asterisk/compiler.h>
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#include <asterisk/frame.h>
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/* Choose if you want to have chan_lcr for Asterisk 1.4.x or CallWeaver 1.2.x */
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/* #define LCR_FOR_CALLWEAVER */
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#ifdef LCR_FOR_CALLWEAVER
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#include <asterisk/phone_no_utils.h>
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#include <asterisk/logger.h>
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#include <asterisk/module.h>
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#include <asterisk/channel.h>
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#endif
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#include "extension.h"
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#include "message.h"
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#include "lcrsocket.h"
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#include "cause.h"
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#include "select.h"
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#include "bchannel.h"
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#include "chan_lcr.h"
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#include "callerid.h"
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#include "options.h"
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#ifndef ISDN_PID_L4_B_USER
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#define ISDN_PID_L4_B_USER 0x440000ff
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#endif
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pid_t bchannel_pid;
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enum {
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BSTATE_IDLE,
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BSTATE_ACTIVATING,
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BSTATE_ACTIVE,
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BSTATE_DEACTIVATING,
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};
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static void bchannel_send_queue(struct bchannel *bchannel);
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int bchannel_initialize(void)
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{
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return 0;
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}
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void bchannel_deinitialize(void)
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{
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}
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/*
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* send control information to the channel (dsp-module)
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*/
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static void ph_control(int sock, unsigned int c1, unsigned int c2, char *trace_name, int trace_value, int b_mode)
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{
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unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+sizeof(int)];
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struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
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unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
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int ret;
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if (b_mode != 0 && b_mode != 2)
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return;
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CDEBUG(NULL, NULL, "Sending PH_CONTROL %s %x,%x\n", trace_name, c1, c2);
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ctrl->prim = PH_CONTROL_REQ;
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ctrl->id = 0;
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*d++ = c1;
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*d++ = c2;
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ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)*2, 0, NULL, 0);
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if (ret < 0)
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CERROR(NULL, NULL, "Failed to send to socket %d\n", sock);
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}
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static void ph_control_block(int sock, unsigned int c1, void *c2, int c2_len, char *trace_name, int trace_value, int b_mode)
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{
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unsigned char buffer[MISDN_HEADER_LEN+sizeof(int)+c2_len];
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struct mISDNhead *ctrl = (struct mISDNhead *)buffer;
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unsigned int *d = (unsigned int *)(buffer+MISDN_HEADER_LEN);
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int ret;
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if (b_mode != 0 && b_mode != 2)
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return;
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CDEBUG(NULL, NULL, "Sending PH_CONTROL (block) %s %x\n", trace_name, c1);
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ctrl->prim = PH_CONTROL_REQ;
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ctrl->id = 0;
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*d++ = c1;
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memcpy(d, c2, c2_len);
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ret = sendto(sock, buffer, MISDN_HEADER_LEN+sizeof(int)+c2_len, 0, NULL, 0);
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if (ret < 0)
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CERROR(NULL, NULL, "Failed to send to socket %d\n", sock);
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}
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static int bchannel_handle(struct lcr_fd *fd, unsigned int what, void *instance, int index);
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/*
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* create stack
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*/
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int bchannel_create(struct bchannel *bchannel, int mode, int queue)
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{
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int ret;
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struct sockaddr_mISDN addr;
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if (bchannel->b_sock > -1) {
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CERROR(bchannel->call, NULL, "Socket already created for handle 0x%x\n", bchannel->handle);
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return 0;
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}
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/* open socket */
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bchannel->b_mode = (mode & 3);
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switch(bchannel->b_mode) {
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case 0:
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CDEBUG(bchannel->call, NULL, "Open DSP audio\n");
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bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_L2DSP);
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break;
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case 1:
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CDEBUG(bchannel->call, NULL, "Open audio\n");
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bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_RAW);
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break;
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case 2:
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CDEBUG(bchannel->call, NULL, "Open DSP HDLC\n");
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bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_L2DSPHDLC);
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break;
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case 3:
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CDEBUG(bchannel->call, NULL, "Open HDLC\n");
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bchannel->b_sock = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_HDLC);
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break;
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}
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if (bchannel->b_sock < 0) {
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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);
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return 0;
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}
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/* register fd */
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memset(&bchannel->lcr_fd, 0, sizeof(bchannel->lcr_fd));
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bchannel->lcr_fd.fd = bchannel->b_sock;
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register_fd(&bchannel->lcr_fd, LCR_FD_READ | LCR_FD_EXCEPT, bchannel_handle, bchannel, 0);
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/* bind socket to bchannel */
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addr.family = AF_ISDN;
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addr.dev = (bchannel->handle>>8);
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addr.channel = bchannel->handle & 0xff;
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ret = bind(bchannel->b_sock, (struct sockaddr *)&addr, sizeof(addr));
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if (ret < 0) {
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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);
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unregister_fd(&bchannel->lcr_fd);
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close(bchannel->b_sock);
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bchannel->b_sock = -1;
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return 0;
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}
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/* queue */
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if (bchannel->b_mode == 1 && queue) {
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bchannel->nodsp_queue_out = 0;
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bchannel->nodsp_queue_in = queue * 8;
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if (bchannel->nodsp_queue_in > QUEUE_BUFFER_MAX-1)
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bchannel->nodsp_queue_in = QUEUE_BUFFER_MAX-1;
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bchannel->nodsp_queue = bchannel->nodsp_queue_in; /* store initial load */
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memset(&bchannel->nodsp_queue_buffer, (options.law=='a')?0x2a:0xff, QUEUE_BUFFER_SIZE);
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bchannel->queue_sent = 0;
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} else
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bchannel->nodsp_queue = 0;
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return 1;
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}
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/*
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* activate / deactivate request
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*/
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void bchannel_activate(struct bchannel *bchannel, int activate)
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{
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struct mISDNhead act;
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int ret;
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/* activate bchannel */
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CDEBUG(bchannel->call, NULL, "%sActivating B-channel.\n", activate?"":"De-");
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switch(bchannel->b_mode) {
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case 0:
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case 2:
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act.prim = (activate)?DL_ESTABLISH_REQ:DL_RELEASE_REQ;
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break;
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case 1:
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case 3:
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act.prim = (activate)?PH_ACTIVATE_REQ:PH_DEACTIVATE_REQ;
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break;
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}
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act.id = 0;
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ret = sendto(bchannel->b_sock, &act, MISDN_HEADER_LEN, 0, NULL, 0);
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if (ret < 0)
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CERROR(bchannel->call, NULL, "Failed to send to socket %d\n", bchannel->b_sock);
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bchannel->b_state = (activate)?BSTATE_ACTIVATING:BSTATE_DEACTIVATING;
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}
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/*
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* set features
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*/
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static void bchannel_activated(struct bchannel *bchannel)
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{
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int sock;
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sock = bchannel->b_sock;
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/* set dsp features */
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if (bchannel->b_txdata)
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ph_control(sock, (bchannel->b_txdata)?DSP_TXDATA_ON:DSP_TXDATA_OFF, 0, "DSP-TXDATA", bchannel->b_txdata, bchannel->b_mode);
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if (bchannel->b_delay && bchannel->b_mode == 0)
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ph_control(sock, DSP_DELAY, bchannel->b_delay, "DSP-DELAY", bchannel->b_delay, bchannel->b_mode);
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if (bchannel->b_tx_dejitter && bchannel->b_mode == 0)
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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);
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if (bchannel->b_tx_gain && bchannel->b_mode == 0)
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ph_control(sock, DSP_VOL_CHANGE_TX, bchannel->b_tx_gain, "DSP-TX_GAIN", bchannel->b_tx_gain, bchannel->b_mode);
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if (bchannel->b_rx_gain && bchannel->b_mode == 0)
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ph_control(sock, DSP_VOL_CHANGE_RX, bchannel->b_rx_gain, "DSP-RX_GAIN", bchannel->b_rx_gain, bchannel->b_mode);
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if (bchannel->b_pipeline[0] && bchannel->b_mode == 0)
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ph_control_block(sock, DSP_PIPELINE_CFG, bchannel->b_pipeline, strlen(bchannel->b_pipeline)+1, "DSP-PIPELINE", 0, bchannel->b_mode);
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if (bchannel->b_conf)
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ph_control(sock, DSP_CONF_JOIN, bchannel->b_conf, "DSP-CONF", bchannel->b_conf, bchannel->b_mode);
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if (bchannel->b_echo)
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ph_control(sock, DSP_ECHO_ON, 0, "DSP-ECHO", 1, bchannel->b_mode);
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if (bchannel->b_tone && bchannel->b_mode == 0)
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ph_control(sock, DSP_TONE_PATT_ON, bchannel->b_tone, "DSP-TONE", bchannel->b_tone, bchannel->b_mode);
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if (bchannel->b_rxoff)
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ph_control(sock, DSP_RECEIVE_OFF, 0, "DSP-RXOFF", 1, bchannel->b_mode);
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// if (bchannel->b_txmix && bchannel->b_mode == 0)
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// ph_control(sock, DSP_MIX_ON, 0, "DSP-MIX", 1, bchannel->b_mode);
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if (bchannel->b_dtmf && bchannel->b_mode == 0)
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ph_control(sock, DTMF_TONE_START, 0, "DSP-DTMF", 1, bchannel->b_mode);
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if (bchannel->b_bf_len && bchannel->b_mode == 0)
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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);
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if (bchannel->b_conf)
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ph_control(sock, DSP_CONF_JOIN, bchannel->b_conf, "DSP-CONF", bchannel->b_conf, bchannel->b_mode);
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bchannel->b_state = BSTATE_ACTIVE;
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}
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/*
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* destroy stack
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*/
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void bchannel_destroy(struct bchannel *bchannel)
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{
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if (bchannel->b_sock > -1) {
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unregister_fd(&bchannel->lcr_fd);
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close(bchannel->b_sock);
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bchannel->b_sock = -1;
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}
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bchannel->b_state = BSTATE_IDLE;
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}
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/*
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* whenever we get audio data from bchannel, we process it here
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*/
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static void bchannel_receive(struct bchannel *bchannel, unsigned char *buffer, int len)
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{
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struct mISDNhead *hh = (struct mISDNhead *)buffer;
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unsigned char *data = buffer + MISDN_HEADER_LEN;
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unsigned int cont = *((unsigned int *)data);
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unsigned char *d;
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int i;
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struct bchannel *remote_bchannel;
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int ret;
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if (hh->prim == PH_CONTROL_IND) {
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/* non dsp -> ignore ph_control */
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if (bchannel->b_mode == 1 || bchannel->b_mode == 3)
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return;
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if (len < 4) {
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CERROR(bchannel->call, NULL, "SHORT READ OF PH_CONTROL INDICATION\n");
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return;
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}
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if ((cont&(~DTMF_TONE_MASK)) == DTMF_TONE_VAL) {
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if (bchannel->call)
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lcr_in_dtmf(bchannel->call, cont & DTMF_TONE_MASK);
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return;
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}
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switch(cont) {
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case DSP_BF_REJECT:
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CERROR(bchannel->call, NULL, "Blowfish crypt rejected.\n");
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break;
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case DSP_BF_ACCEPT:
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CDEBUG(bchannel->call, NULL, "Blowfish crypt enabled.\n");
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break;
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default:
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CDEBUG(bchannel->call, NULL, "Unhandled bchannel control 0x%x.\n", cont);
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}
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return;
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}
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if (hh->prim == PH_DATA_REQ) {
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if (!bchannel->b_txdata) {
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/* if tx is off, it may happen that fifos send us pending informations, we just ignore them */
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CDEBUG(bchannel->call, NULL, "ignoring tx data, because 'txdata' is turned off\n");
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return;
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}
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return;
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}
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if (hh->prim != PH_DATA_IND && hh->prim != DL_DATA_IND) {
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CERROR(bchannel->call, NULL, "Bchannel received unknown primitve: 0x%lx\n", hh->prim);
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return;
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}
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/* if calls are bridged, but not via dsp (no b_conf), forward here */
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if (!bchannel->b_conf
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&& bchannel->call
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&& bchannel->call->bridge_call
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&& bchannel->call->bridge_call->bchannel) {
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remote_bchannel = bchannel->call->bridge_call->bchannel;
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#if 0
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int i = 0;
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char string[4096] = "";
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while(i < len) {
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sprintf(string+strlen(string), " %02x", data[i]);
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i++;
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}
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CDEBUG(remote_bchannel->call, NULL, "Forwarding packet%s\n", string);
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#endif
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hh->prim = PH_DATA_REQ;
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hh->id = 0;
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ret = sendto(remote_bchannel->b_sock, buffer, MISDN_HEADER_LEN+len, 0, NULL, 0);
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if (ret < 0)
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CERROR(remote_bchannel->call, NULL, "Failed to send to socket %d\n", bchannel->b_sock);
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return;
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}
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/* calls will not process any audio data unless
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* the call is connected OR interface features audio during call setup.
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*/
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/* if rx is off, it may happen that fifos send us pending informations, we just ignore them */
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if (bchannel->b_rxoff) {
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CDEBUG(bchannel->call, NULL, "ignoring data, because rx is turned off\n");
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return;
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}
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if (!bchannel->call) {
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CDEBUG(bchannel->call, NULL, "ignoring data, because no call associated with bchannel\n");
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return;
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}
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if (!bchannel->call->audiopath) {
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/* return, because we have no audio from port */
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return;
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}
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if (bchannel->call->pipe[1] < 0) {
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/* nobody there */
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return;
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}
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|
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/* if no hdlc */
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if (bchannel->b_mode == 0 || bchannel->b_mode == 1) {
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d = data;
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for (i = 0; i < len; i++) {
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*d = flip_bits[*d];
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d++;
|
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}
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}
|
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|
|
|
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len = write(bchannel->call->pipe[1], data, len);
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if (len < 0)
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goto errout;
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|
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return;
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errout:
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close(bchannel->call->pipe[1]);
|
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bchannel->call->pipe[1] = -1;
|
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CDEBUG(bchannel->call, NULL, "broken pipe on bchannel pipe\n");
|
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}
|
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|
|
|
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/*
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* transmit data to bchannel
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*/
|
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void bchannel_transmit(struct bchannel *bchannel, unsigned char *data, int len)
|
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{
|
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unsigned char buff[1024 + MISDN_HEADER_LEN], *p = buff + MISDN_HEADER_LEN;
|
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struct mISDNhead *frm = (struct mISDNhead *)buff;
|
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int ret;
|
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int i;
|
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int space, in;
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|
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if (bchannel->b_state != BSTATE_ACTIVE)
|
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return;
|
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if (len > 1024 || len < 1)
|
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return;
|
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if (data) {
|
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switch(bchannel->b_mode) {
|
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case 0:
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for (i = 0; i < len; i++)
|
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*p++ = flip_bits[*data++];
|
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frm->prim = DL_DATA_REQ;
|
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break;
|
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case 1:
|
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for (i = 0; i < len; i++)
|
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*p++ = flip_bits[*data++];
|
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frm->prim = PH_DATA_REQ;
|
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break;
|
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case 2:
|
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memcpy(p, data, len);
|
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frm->prim = DL_DATA_REQ;
|
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break;
|
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case 3:
|
|
memcpy(p, data, len);
|
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frm->prim = PH_DATA_REQ;
|
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break;
|
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}
|
|
} 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;
|
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for (i = 0; i < len; i++)
|
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*p++ = test_tone[(bchannel->test + i) & 7];
|
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bchannel->test = (bchannel->test + len) & 7;
|
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#endif
|
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if (bchannel->nodsp_queue) {
|
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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);
|
|
}
|
|
}
|
|
|
|
|