920 lines
24 KiB
C
Executable File
920 lines
24 KiB
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* QuickNet Internet Phone Jack Channel
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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#include <stdio.h>
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#include <pthread.h>
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#include <string.h>
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#include <asterisk/channel.h>
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#include <asterisk/channel_pvt.h>
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#include <asterisk/config.h>
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#include <asterisk/logger.h>
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#include <asterisk/module.h>
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#include <asterisk/pbx.h>
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#include <asterisk/options.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <arpa/inet.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <linux/if_packet.h>
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#include <linux/if_ether.h>
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#include "ixjuser.h"
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#include "DialTone.h"
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#define IXJ_MAX_BUF 480
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static char *desc = "QuickNet Internet Phone Jack";
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static char *type = "PhoneJack";
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static char *tdesc = "QuickNet Internet Phone Jack";
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static char *config = "ixj.conf";
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/* Default context for dialtone mode */
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static char context[AST_MAX_EXTENSION] = "default";
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char *ignore_rcs_id_for_chan_ixj = ixjuser_h_rcsid;
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static int usecnt =0;
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static pthread_mutex_t usecnt_lock = PTHREAD_MUTEX_INITIALIZER;
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/* Protect the interface list (of ixj_pvt's) */
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static pthread_mutex_t iflock = PTHREAD_MUTEX_INITIALIZER;
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/* Protect the monitoring thread, so only one process can kill or start it, and not
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when it's doing something critical. */
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static pthread_mutex_t monlock = PTHREAD_MUTEX_INITIALIZER;
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/* This is the thread for the monitor which checks for input on the channels
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which are not currently in use. */
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static pthread_t monitor_thread = -1;
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static int restart_monitor(void);
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/* The private structures of the Phone Jack channels are linked for
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selecting outgoing channels */
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#define MODE_DIALTONE 1
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#define MODE_IMMEDIATE 2
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static struct ixj_pvt {
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int fd; /* Raw file descriptor for this device */
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struct ast_channel *owner; /* Channel we belong to, possibly NULL */
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int mode; /* Is this in the */
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int lastformat; /* Last output format */
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int lastinput; /* Last input format */
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int ministate; /* Miniature state, for dialtone mode */
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char dev[256]; /* Device name */
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struct ixj_pvt *next; /* Next channel in list */
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struct ast_frame fr; /* Frame */
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char offset[AST_FRIENDLY_OFFSET];
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char buf[IXJ_MAX_BUF]; /* Static buffer for reading frames */
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int obuflen;
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int dialtone;
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char context[AST_MAX_EXTENSION];
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char obuf[IXJ_MAX_BUF * 2];
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char ext[AST_MAX_EXTENSION];
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} *iflist = NULL;
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static int ixj_digit(struct ast_channel *ast, char digit)
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{
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struct ixj_pvt *p;
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int outdigit;
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p = ast->pvt->pvt;
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switch(digit) {
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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outdigit = digit - '0' + 1;
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break;
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case '*':
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outdigit = 11;
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break;
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case '#':
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outdigit = 12;
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break;
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default:
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ast_log(LOG_WARNING, "Unknown digit '%c'\n", digit);
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return -1;
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}
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ioctl(p->fd, IXJCTL_PLAY_TONE, digit);
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return 0;
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}
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static int ixj_call(struct ast_channel *ast, char *dest, int timeout)
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{
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struct ixj_pvt *p;
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p = ast->pvt->pvt;
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if ((ast->state != AST_STATE_DOWN) && (ast->state != AST_STATE_RESERVED)) {
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ast_log(LOG_WARNING, "ixj_call called on %s, neither down nor reserved\n", ast->name);
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return -1;
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}
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/* When we call, it just works, really, there's no destination... Just
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ring the phone and wait for someone to answer */
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if (option_debug)
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ast_log(LOG_DEBUG, "Ringing %s on %s (%d)\n", dest, ast->name, ast->fd);
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ioctl(p->fd, IXJCTL_RING_START);
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ast->state = AST_STATE_RINGING;
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return 0;
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}
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static int ixj_hangup(struct ast_channel *ast)
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{
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struct ixj_pvt *p;
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p = ast->pvt->pvt;
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if (option_debug)
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ast_log(LOG_DEBUG, "ixj_hangup(%s)\n", ast->name);
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if (!ast->pvt->pvt) {
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ast_log(LOG_WARNING, "Asked to hangup channel not connected\n");
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return 0;
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}
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/* XXX Is there anything we can do to really hang up except stop recording? */
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ast->state = AST_STATE_DOWN;
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if (ioctl(p->fd, IXJCTL_REC_STOP))
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ast_log(LOG_WARNING, "Failed to stop recording\n");
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if (ioctl(p->fd, IXJCTL_PLAY_STOP))
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ast_log(LOG_WARNING, "Failed to stop playing\n");
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if (ioctl(p->fd, IXJCTL_RING_STOP))
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ast_log(LOG_WARNING, "Failed to stop ringing\n");
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if (ioctl(p->fd, IXJCTL_CPT_STOP))
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ast_log(LOG_WARNING, "Failed to stop sounds\n");
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/* If they're off hook, give a busy signal */
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if (ioctl(p->fd, IXJCTL_HOOKSTATE))
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ioctl(p->fd, IXJCTL_BUSY);
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p->lastformat = -1;
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p->lastinput = -1;
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p->ministate = 0;
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p->obuflen = 0;
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p->dialtone = 0;
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memset(p->ext, 0, sizeof(p->ext));
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((struct ixj_pvt *)(ast->pvt->pvt))->owner = NULL;
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pthread_mutex_lock(&usecnt_lock);
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usecnt--;
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if (usecnt < 0)
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ast_log(LOG_WARNING, "Usecnt < 0???\n");
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pthread_mutex_unlock(&usecnt_lock);
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ast_update_use_count();
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if (option_verbose > 2)
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ast_verbose( VERBOSE_PREFIX_3 "Hungup '%s'\n", ast->name);
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ast->pvt->pvt = NULL;
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ast->state = AST_STATE_DOWN;
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restart_monitor();
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return 0;
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}
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static int ixj_setup(struct ast_channel *ast)
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{
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struct ixj_pvt *p;
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p = ast->pvt->pvt;
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ioctl(p->fd, IXJCTL_CPT_STOP);
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/* Nothing to answering really, just start recording */
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if (ast->format & AST_FORMAT_G723_1) {
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/* Prefer g723 */
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ioctl(p->fd, IXJCTL_REC_STOP);
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if (p->lastinput != AST_FORMAT_G723_1) {
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p->lastinput = AST_FORMAT_G723_1;
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if (ioctl(p->fd, IXJCTL_REC_CODEC, G723_63)) {
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ast_log(LOG_WARNING, "Failed to set codec to g723.1\n");
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return -1;
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}
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}
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} else if (ast->format & AST_FORMAT_SLINEAR) {
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ioctl(p->fd, IXJCTL_REC_STOP);
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if (p->lastinput != AST_FORMAT_SLINEAR) {
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p->lastinput = AST_FORMAT_SLINEAR;
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if (ioctl(p->fd, IXJCTL_REC_CODEC, LINEAR16)) {
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ast_log(LOG_WARNING, "Failed to set codec to signed linear 16\n");
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return -1;
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}
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}
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} else {
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ast_log(LOG_WARNING, "Can't do format %d\n", ast->format);
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return -1;
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}
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if (ioctl(p->fd, IXJCTL_REC_START)) {
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ast_log(LOG_WARNING, "Failed to start recording\n");
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return -1;
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}
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return 0;
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}
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static int ixj_answer(struct ast_channel *ast)
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{
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ixj_setup(ast);
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if (option_debug)
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ast_log(LOG_DEBUG, "ixj_answer(%s)\n", ast->name);
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ast->rings = 0;
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ast->state = AST_STATE_UP;
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return 0;
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}
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static char ixj_2digit(char c)
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{
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if (c == 12)
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return '#';
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else if (c == 11)
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return '*';
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else if ((c < 10) && (c >= 0))
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return '0' + c - 1;
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else
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return '?';
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}
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static struct ast_frame *ixj_read(struct ast_channel *ast)
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{
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int res;
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IXJ_EXCEPTION ixje;
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struct ixj_pvt *p = ast->pvt->pvt;
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char digit;
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/* Some nice norms */
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p->fr.datalen = 0;
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p->fr.timelen = 0;
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p->fr.data = NULL;
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p->fr.src = type;
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p->fr.offset = 0;
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p->fr.mallocd=0;
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ixje.bytes = ioctl(p->fd, IXJCTL_EXCEPTION);
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if (ixje.bits.dtmf_ready) {
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/* We've got a digit -- Just handle this nicely and easily */
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digit = ioctl(p->fd, IXJCTL_GET_DTMF_ASCII);
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p->fr.subclass = digit;
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p->fr.frametype = AST_FRAME_DTMF;
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return &p->fr;
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}
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if (ixje.bits.hookstate) {
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res = ioctl(p->fd, IXJCTL_HOOKSTATE);
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/* See if we've gone on hook, if so, notify by returning NULL */
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if (!res)
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return NULL;
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else {
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if (ast->state == AST_STATE_RINGING) {
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/* They've picked up the phone */
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p->fr.frametype = AST_FRAME_CONTROL;
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p->fr.subclass = AST_CONTROL_ANSWER;
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ixj_setup(ast);
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ast->state = AST_STATE_UP;
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return &p->fr;
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} else
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ast_log(LOG_WARNING, "Got off hook in weird state\n");
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}
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}
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#if 0
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if (ixje.bits.pstn_ring)
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ast_verbose("Unit is ringing\n");
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if (ixje.bits.caller_id) {
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ast_verbose("We have caller ID: %s\n");
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}
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#endif
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/* Try to read some data... */
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CHECK_BLOCKING(ast);
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res = read(p->fd, p->buf, IXJ_MAX_BUF);
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ast->blocking = 0;
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if (res < 0) {
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#if 0
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if (errno == EAGAIN) {
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ast_log(LOG_WARNING, "Null frame received\n");
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p->fr.frametype = AST_FRAME_NULL;
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p->fr.subclass = 0;
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return &p->fr;
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}
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#endif
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ast_log(LOG_WARNING, "Error reading: %s\n", strerror(errno));
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return NULL;
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}
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p->fr.data = p->buf;
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p->fr.datalen = res;
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p->fr.frametype = AST_FRAME_VOICE;
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p->fr.subclass = p->lastinput;
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p->fr.offset = AST_FRIENDLY_OFFSET;
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return &p->fr;
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}
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static int ixj_write_buf(struct ixj_pvt *p, char *buf, int len, int frlen)
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{
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int res;
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/* Store as much of the buffer as we can, then write fixed frames */
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int space = sizeof(p->obuf) - p->obuflen;
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/* Make sure we have enough buffer space to store the frame */
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if (space < len)
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len = space;
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memcpy(p->obuf + p->obuflen, buf, len);
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p->obuflen += len;
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while(p->obuflen > frlen) {
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#if 0
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res = frlen;
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ast_log(LOG_DEBUG, "Wrote %d bytes\n", res);
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#else
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res = write(p->fd, p->obuf, frlen);
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#endif
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if (res != frlen) {
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if (res < 1) {
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ast_log(LOG_WARNING, "Write failed: %s\n", strerror(errno));
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return -1;
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} else {
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ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frlen);
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}
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}
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p->obuflen -= frlen;
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/* Move memory if necessary */
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if (p->obuflen)
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memmove(p->obuf, p->obuf + frlen, p->obuflen);
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}
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return len;
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}
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static int ixj_write(struct ast_channel *ast, struct ast_frame *frame)
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{
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struct ixj_pvt *p = ast->pvt->pvt;
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int res;
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int maxfr=0;
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char *pos;
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int sofar;
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int expected;
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/* Write a frame of (presumably voice) data */
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if (frame->frametype != AST_FRAME_VOICE) {
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ast_log(LOG_WARNING, "Don't know what to do with frame type '%d'\n", frame->frametype);
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ast_frfree(frame);
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return -1;
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}
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if (!(frame->subclass & (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR))) {
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ast_log(LOG_WARNING, "Cannot handle frames in %d format\n", frame->subclass);
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ast_frfree(frame);
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return -1;
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}
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if (frame->subclass == AST_FORMAT_G723_1) {
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if (p->lastformat != AST_FORMAT_G723_1) {
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ioctl(p->fd, IXJCTL_PLAY_STOP);
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if (ioctl(p->fd, IXJCTL_PLAY_CODEC, G723_63)) {
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ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
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return -1;
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}
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p->lastformat = AST_FORMAT_G723_1;
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/* Reset output buffer */
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p->obuflen = 0;
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}
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if (frame->datalen > 24) {
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ast_log(LOG_WARNING, "Frame size too large for G.723.1 (%d bytes)\n", frame->datalen);
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return -1;
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}
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maxfr = 24;
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} else if (frame->subclass == AST_FORMAT_SLINEAR) {
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if (p->lastformat != AST_FORMAT_SLINEAR) {
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ioctl(p->fd, IXJCTL_PLAY_STOP);
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if (ioctl(p->fd, IXJCTL_PLAY_CODEC, LINEAR16)) {
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ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
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return -1;
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}
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p->lastformat = AST_FORMAT_SLINEAR;
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/* Reset output buffer */
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p->obuflen = 0;
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}
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maxfr = 480;
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}
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if (ioctl(p->fd, IXJCTL_PLAY_START)) {
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ast_log(LOG_WARNING, "Failed to start recording\n");
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return -1;
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}
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/* If we get here, we have a voice frame of Appropriate data */
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sofar = 0;
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pos = frame->data;
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while(sofar < frame->datalen) {
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/* Write in no more than maxfr sized frames */
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expected = frame->datalen - sofar;
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if (maxfr < expected)
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expected = maxfr;
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/* XXX Internet Phone Jack does not handle the 4-byte VAD frame properly! XXX */
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if (frame->datalen != 4) {
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res = ixj_write_buf(p, pos, expected, maxfr);
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if (res != expected) {
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if (res < 0)
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ast_log(LOG_WARNING, "Write returned error (%s)\n", strerror(errno));
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else
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ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frame->datalen);
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return -1;
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}
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sofar += res;
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pos += res;
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} else
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sofar += 4;
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}
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return 0;
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}
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static struct ast_channel *ixj_new(struct ixj_pvt *i, int state)
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{
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struct ast_channel *tmp;
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tmp = ast_channel_alloc();
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if (tmp) {
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snprintf(tmp->name, sizeof(tmp->name), "PhoneJack/%s", i->dev + 5);
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tmp->type = type;
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tmp->fd = i->fd;
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/* XXX Switching formats silently causes kernel panics XXX */
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tmp->format = AST_FORMAT_G723_1 /* | AST_FORMAT_SLINEAR */;
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tmp->state = state;
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if (state == AST_STATE_RING)
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tmp->rings = 1;
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tmp->pvt->pvt = i;
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tmp->pvt->send_digit = ixj_digit;
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tmp->pvt->call = ixj_call;
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tmp->pvt->hangup = ixj_hangup;
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tmp->pvt->answer = ixj_answer;
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tmp->pvt->read = ixj_read;
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tmp->pvt->write = ixj_write;
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strncpy(tmp->context, i->context, sizeof(tmp->context));
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if (strlen(i->ext))
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strncpy(tmp->exten, i->ext, sizeof(tmp->exten));
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i->owner = tmp;
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pthread_mutex_lock(&usecnt_lock);
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usecnt++;
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pthread_mutex_unlock(&usecnt_lock);
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ast_update_use_count();
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if (state != AST_STATE_DOWN) {
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if (state == AST_STATE_RING)
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ioctl(tmp->fd, IXJCTL_RINGBACK);
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if (ast_pbx_start(tmp)) {
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ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
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ast_hangup(tmp);
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}
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}
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} else
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ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
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return tmp;
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}
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static void ixj_mini_packet(struct ixj_pvt *i)
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{
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int res;
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char buf[1024];
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/* Ignore stuff we read... */
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res = read(i->fd, buf, sizeof(buf));
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if (res < 1) {
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ast_log(LOG_WARNING, "Read returned %d\n", res);
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return;
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}
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}
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static void ixj_check_exception(struct ixj_pvt *i)
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{
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int offhook=0;
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char digit[2] = {0 , 0};
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IXJ_EXCEPTION ixje;
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/* XXX Do something XXX */
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#if 0
|
|
ast_log(LOG_DEBUG, "Exception!\n");
|
|
#endif
|
|
ixje.bytes = ioctl(i->fd, IXJCTL_EXCEPTION);
|
|
if (ixje.bits.dtmf_ready) {
|
|
digit[0] = ioctl(i->fd, IXJCTL_GET_DTMF_ASCII);
|
|
if (i->mode == MODE_DIALTONE) {
|
|
ioctl(i->fd, IXJCTL_PLAY_STOP);
|
|
ioctl(i->fd, IXJCTL_REC_STOP);
|
|
ioctl(i->fd, IXJCTL_CPT_STOP);
|
|
i->dialtone = 0;
|
|
if (strlen(i->ext) < AST_MAX_EXTENSION - 1)
|
|
strcat(i->ext, digit);
|
|
if (ast_exists_extension(NULL, i->context, i->ext, 1)) {
|
|
/* It's a valid extension in its context, get moving! */
|
|
ixj_new(i, AST_STATE_UP);
|
|
/* No need to restart monitor, we are the monitor */
|
|
if (i->owner) {
|
|
pthread_mutex_lock(&usecnt_lock);
|
|
usecnt--;
|
|
pthread_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
ixj_setup(i->owner);
|
|
}
|
|
} else if (ast_exists_extension(NULL, "default", i->ext, 1)) {
|
|
/* Check the default, too... */
|
|
/* XXX This should probably be justified better XXX */
|
|
strncpy(i->context, "default", sizeof(i->context));
|
|
ixj_new(i, AST_STATE_UP);
|
|
if (i->owner) {
|
|
pthread_mutex_lock(&usecnt_lock);
|
|
usecnt--;
|
|
pthread_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
ixj_setup(i->owner);
|
|
}
|
|
} else if ((strlen(i->ext) >= ast_pbx_longest_extension(i->context)) &&
|
|
(strlen(i->ext) >= ast_pbx_longest_extension("default"))) {
|
|
if (option_debug)
|
|
ast_log(LOG_DEBUG, "%s is too long\n", i->ext);
|
|
/* It's not a valid extension, give a busy signal */
|
|
ioctl(i->fd, IXJCTL_BUSY);
|
|
}
|
|
#if 0
|
|
ast_verbose("Extension is %s\n", i->ext);
|
|
#endif
|
|
}
|
|
}
|
|
if (ixje.bits.hookstate) {
|
|
offhook = ioctl(i->fd, IXJCTL_HOOKSTATE);
|
|
if (offhook) {
|
|
if (i->mode == MODE_IMMEDIATE) {
|
|
ixj_new(i, AST_STATE_RING);
|
|
} else if (i->mode == MODE_DIALTONE) {
|
|
pthread_mutex_lock(&usecnt_lock);
|
|
usecnt++;
|
|
pthread_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
/* Play the dialtone */
|
|
i->dialtone++;
|
|
ioctl(i->fd, IXJCTL_PLAY_STOP);
|
|
ioctl(i->fd, IXJCTL_PLAY_CODEC, ULAW);
|
|
ioctl(i->fd, IXJCTL_PLAY_START);
|
|
}
|
|
} else {
|
|
if (i->dialtone) {
|
|
pthread_mutex_lock(&usecnt_lock);
|
|
usecnt--;
|
|
pthread_mutex_unlock(&usecnt_lock);
|
|
ast_update_use_count();
|
|
}
|
|
memset(i->ext, 0, sizeof(i->ext));
|
|
ioctl(i->fd, IXJCTL_CPT_STOP);
|
|
ioctl(i->fd, IXJCTL_PLAY_STOP);
|
|
ioctl(i->fd, IXJCTL_REC_STOP);
|
|
i->dialtone = 0;
|
|
}
|
|
}
|
|
if (ixje.bits.pstn_ring)
|
|
ast_verbose("Unit is ringing\n");
|
|
if (ixje.bits.caller_id)
|
|
ast_verbose("We have caller ID\n");
|
|
|
|
|
|
}
|
|
|
|
static void *do_monitor(void *data)
|
|
{
|
|
fd_set rfds, efds;
|
|
int n, res;
|
|
struct ixj_pvt *i;
|
|
int tonepos = 0;
|
|
/* The tone we're playing this round */
|
|
struct timeval tv = {0,0};
|
|
int dotone;
|
|
/* This thread monitors all the frame relay interfaces which are not yet in use
|
|
(and thus do not have a separate thread) indefinitely */
|
|
/* From here on out, we die whenever asked */
|
|
if (pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL)) {
|
|
ast_log(LOG_WARNING, "Unable to set cancel type to asynchronous\n");
|
|
return NULL;
|
|
}
|
|
for(;;) {
|
|
/* Don't let anybody kill us right away. Nobody should lock the interface list
|
|
and wait for the monitor list, but the other way around is okay. */
|
|
if (pthread_mutex_lock(&monlock)) {
|
|
ast_log(LOG_ERROR, "Unable to grab monitor lock\n");
|
|
return NULL;
|
|
}
|
|
/* Lock the interface list */
|
|
if (pthread_mutex_lock(&iflock)) {
|
|
ast_log(LOG_ERROR, "Unable to grab interface lock\n");
|
|
pthread_mutex_unlock(&monlock);
|
|
return NULL;
|
|
}
|
|
/* Build the stuff we're going to select on, that is the socket of every
|
|
ixj_pvt that does not have an associated owner channel */
|
|
n = -1;
|
|
FD_ZERO(&rfds);
|
|
FD_ZERO(&efds);
|
|
i = iflist;
|
|
dotone = 0;
|
|
while(i) {
|
|
if (FD_ISSET(i->fd, &rfds))
|
|
ast_log(LOG_WARNING, "Descriptor %d appears twice (%s)?\n", i->fd, i->dev);
|
|
if (!i->owner) {
|
|
/* This needs to be watched, as it lacks an owner */
|
|
FD_SET(i->fd, &rfds);
|
|
FD_SET(i->fd, &efds);
|
|
if (i->fd > n)
|
|
n = i->fd;
|
|
if (i->dialtone) {
|
|
/* Remember we're going to have to come back and play
|
|
more dialtones */
|
|
if (!tv.tv_usec && !tv.tv_sec) {
|
|
/* If we're due for a dialtone, play one */
|
|
if (write(i->fd, DialTone + tonepos, 240) != 240)
|
|
ast_log(LOG_WARNING, "Dial tone write error\n");
|
|
}
|
|
dotone++;
|
|
}
|
|
}
|
|
|
|
i = i->next;
|
|
}
|
|
/* Okay, now that we know what to do, release the interface lock */
|
|
pthread_mutex_unlock(&iflock);
|
|
|
|
/* And from now on, we're okay to be killed, so release the monitor lock as well */
|
|
pthread_mutex_unlock(&monlock);
|
|
/* Wait indefinitely for something to happen */
|
|
if (dotone) {
|
|
/* If we're ready to recycle the time, set it to 30 ms */
|
|
tonepos += 240;
|
|
if (tonepos >= sizeof(DialTone))
|
|
tonepos = 0;
|
|
if (!tv.tv_usec && !tv.tv_sec) {
|
|
tv.tv_usec = 30000;
|
|
tv.tv_sec = 0;
|
|
}
|
|
res = select(n + 1, &rfds, NULL, &efds, &tv);
|
|
} else {
|
|
res = select(n + 1, &rfds, NULL, &efds, NULL);
|
|
tv.tv_usec = 0;
|
|
tv.tv_sec = 0;
|
|
tonepos = 0;
|
|
}
|
|
/* Okay, select has finished. Let's see what happened. */
|
|
if (res < 0) {
|
|
ast_log(LOG_WARNING, "select return %d: %s\n", res, strerror(errno));
|
|
continue;
|
|
}
|
|
/* If there are no fd's changed, just continue, it's probably time
|
|
to play some more dialtones */
|
|
if (!res)
|
|
continue;
|
|
/* Alright, lock the interface list again, and let's look and see what has
|
|
happened */
|
|
if (pthread_mutex_lock(&iflock)) {
|
|
ast_log(LOG_WARNING, "Unable to lock the interface list\n");
|
|
continue;
|
|
}
|
|
i = iflist;
|
|
while(i) {
|
|
if (FD_ISSET(i->fd, &rfds)) {
|
|
if (i->owner) {
|
|
ast_log(LOG_WARNING, "Whoa.... I'm owned but found (%d, %s)...\n", i->fd, i->dev);
|
|
continue;
|
|
}
|
|
ixj_mini_packet(i);
|
|
}
|
|
if (FD_ISSET(i->fd, &efds)) {
|
|
if (i->owner) {
|
|
ast_log(LOG_WARNING, "Whoa.... I'm owned but found (%d, %s)...\n", i->fd, i->dev);
|
|
continue;
|
|
}
|
|
ixj_check_exception(i);
|
|
}
|
|
i=i->next;
|
|
}
|
|
pthread_mutex_unlock(&iflock);
|
|
}
|
|
/* Never reached */
|
|
return NULL;
|
|
|
|
}
|
|
|
|
static int restart_monitor()
|
|
{
|
|
/* If we're supposed to be stopped -- stay stopped */
|
|
if (monitor_thread == -2)
|
|
return 0;
|
|
if (pthread_mutex_lock(&monlock)) {
|
|
ast_log(LOG_WARNING, "Unable to lock monitor\n");
|
|
return -1;
|
|
}
|
|
if (monitor_thread == pthread_self()) {
|
|
pthread_mutex_unlock(&monlock);
|
|
ast_log(LOG_WARNING, "Cannot kill myself\n");
|
|
return -1;
|
|
}
|
|
if (monitor_thread != -1) {
|
|
pthread_cancel(monitor_thread);
|
|
#if 0
|
|
pthread_join(monitor_thread, NULL);
|
|
#endif
|
|
}
|
|
/* Start a new monitor */
|
|
if (pthread_create(&monitor_thread, NULL, do_monitor, NULL) < 0) {
|
|
pthread_mutex_unlock(&monlock);
|
|
ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
|
|
return -1;
|
|
}
|
|
pthread_mutex_unlock(&monlock);
|
|
return 0;
|
|
}
|
|
|
|
static struct ixj_pvt *mkif(char *iface, int mode)
|
|
{
|
|
/* Make a ixj_pvt structure for this interface */
|
|
struct ixj_pvt *tmp;
|
|
#if 0
|
|
int flags;
|
|
#endif
|
|
|
|
tmp = malloc(sizeof(struct ixj_pvt));
|
|
if (tmp) {
|
|
tmp->fd = open(iface, O_RDWR);
|
|
if (tmp->fd < 0) {
|
|
ast_log(LOG_WARNING, "Unable to open '%s'\n", iface);
|
|
free(tmp);
|
|
return NULL;
|
|
}
|
|
ioctl(tmp->fd, IXJCTL_PLAY_STOP);
|
|
ioctl(tmp->fd, IXJCTL_REC_STOP);
|
|
ioctl(tmp->fd, IXJCTL_RING_STOP);
|
|
ioctl(tmp->fd, IXJCTL_CPT_STOP);
|
|
tmp->mode = mode;
|
|
#if 0
|
|
flags = fcntl(tmp->fd, F_GETFL);
|
|
fcntl(tmp->fd, F_SETFL, flags | O_NONBLOCK);
|
|
#endif
|
|
tmp->owner = NULL;
|
|
tmp->lastformat = -1;
|
|
tmp->lastinput = -1;
|
|
tmp->ministate = 0;
|
|
memset(tmp->ext, 0, sizeof(tmp->ext));
|
|
strncpy(tmp->dev, iface, sizeof(tmp->dev));
|
|
strncpy(tmp->context, context, sizeof(tmp->context));
|
|
tmp->next = NULL;
|
|
tmp->obuflen = 0;
|
|
tmp->dialtone = 0;
|
|
}
|
|
return tmp;
|
|
}
|
|
|
|
static struct ast_channel *ixj_request(char *type, int format, void *data)
|
|
{
|
|
int oldformat;
|
|
struct ixj_pvt *p;
|
|
struct ast_channel *tmp = NULL;
|
|
char *name = data;
|
|
|
|
oldformat = format;
|
|
format &= (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR);
|
|
if (!format) {
|
|
ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
|
|
return NULL;
|
|
}
|
|
/* Search for an unowned channel */
|
|
if (pthread_mutex_lock(&iflock)) {
|
|
ast_log(LOG_ERROR, "Unable to lock interface list???\n");
|
|
return NULL;
|
|
}
|
|
p = iflist;
|
|
while(p) {
|
|
if (!strcmp(name, p->dev + 5)) {
|
|
if (!p->owner) {
|
|
tmp = ixj_new(p, AST_STATE_DOWN);
|
|
break;
|
|
}
|
|
}
|
|
p = p->next;
|
|
}
|
|
pthread_mutex_unlock(&iflock);
|
|
restart_monitor();
|
|
return tmp;
|
|
}
|
|
|
|
int load_module()
|
|
{
|
|
struct ast_config *cfg;
|
|
struct ast_variable *v;
|
|
struct ixj_pvt *tmp;
|
|
int mode = MODE_IMMEDIATE;
|
|
cfg = ast_load(config);
|
|
|
|
/* We *must* have a config file otherwise stop immediately */
|
|
if (!cfg) {
|
|
ast_log(LOG_ERROR, "Unable to load config %s\n", config);
|
|
return -1;
|
|
}
|
|
if (pthread_mutex_lock(&iflock)) {
|
|
/* It's a little silly to lock it, but we mind as well just to be sure */
|
|
ast_log(LOG_ERROR, "Unable to lock interface list???\n");
|
|
return -1;
|
|
}
|
|
v = ast_variable_browse(cfg, "interfaces");
|
|
while(v) {
|
|
/* Create the interface list */
|
|
if (!strcasecmp(v->name, "device")) {
|
|
tmp = mkif(v->value, mode);
|
|
if (tmp) {
|
|
tmp->next = iflist;
|
|
iflist = tmp;
|
|
|
|
} else {
|
|
ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
|
|
ast_destroy(cfg);
|
|
pthread_mutex_unlock(&iflock);
|
|
unload_module();
|
|
return -1;
|
|
}
|
|
} else if (!strcasecmp(v->name, "mode")) {
|
|
if (!strncasecmp(v->value, "di", 2))
|
|
mode = MODE_DIALTONE;
|
|
else if (!strncasecmp(v->value, "im", 2))
|
|
mode = MODE_IMMEDIATE;
|
|
else
|
|
ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
|
|
} else if (!strcasecmp(v->name, "context")) {
|
|
strncpy(context, v->value, sizeof(context));
|
|
}
|
|
v = v->next;
|
|
}
|
|
pthread_mutex_unlock(&iflock);
|
|
/* Make sure we can register our Adtranixj channel type */
|
|
if (ast_channel_register(type, tdesc, AST_FORMAT_G723_1, ixj_request)) {
|
|
ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
|
|
ast_destroy(cfg);
|
|
unload_module();
|
|
return -1;
|
|
}
|
|
ast_destroy(cfg);
|
|
/* And start the monitor for the first time */
|
|
restart_monitor();
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
int unload_module()
|
|
{
|
|
struct ixj_pvt *p, *pl;
|
|
/* First, take us out of the channel loop */
|
|
ast_channel_unregister(type);
|
|
if (!pthread_mutex_lock(&iflock)) {
|
|
/* Hangup all interfaces if they have an owner */
|
|
p = iflist;
|
|
while(p) {
|
|
if (p->owner)
|
|
ast_softhangup(p->owner);
|
|
p = p->next;
|
|
}
|
|
iflist = NULL;
|
|
pthread_mutex_unlock(&iflock);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to lock the monitor\n");
|
|
return -1;
|
|
}
|
|
if (!pthread_mutex_lock(&monlock)) {
|
|
if (monitor_thread > -1) {
|
|
pthread_cancel(monitor_thread);
|
|
pthread_join(monitor_thread, NULL);
|
|
}
|
|
monitor_thread = -2;
|
|
pthread_mutex_unlock(&monlock);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to lock the monitor\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!pthread_mutex_lock(&iflock)) {
|
|
/* Destroy all the interfaces and free their memory */
|
|
p = iflist;
|
|
while(p) {
|
|
/* Close the socket, assuming it's real */
|
|
if (p->fd > -1)
|
|
close(p->fd);
|
|
pl = p;
|
|
p = p->next;
|
|
/* Free associated memory */
|
|
free(pl);
|
|
}
|
|
iflist = NULL;
|
|
pthread_mutex_unlock(&iflock);
|
|
} else {
|
|
ast_log(LOG_WARNING, "Unable to lock the monitor\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int usecount()
|
|
{
|
|
int res;
|
|
pthread_mutex_lock(&usecnt_lock);
|
|
res = usecnt;
|
|
pthread_mutex_unlock(&usecnt_lock);
|
|
return res;
|
|
}
|
|
|
|
char *description()
|
|
{
|
|
return desc;
|
|
}
|
|
|