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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.0
Mark Spencer 26 years ago
parent a5be519ba4
commit a8ffb8b553
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channels/DialTone.h
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/*
* 8-bit raw data
*
* Source: DialTone.ulaw
*
* Copyright (C) 1999, Mark Spencer and Linux Support Services
*
* Distributed under the terms of the GNU General Public License
*
*/
static unsigned char DialTone[] = {
0xff, 0xab, 0x9d, 0x96, 0x91, 0x90, 0x91, 0x96, 0x9c, 0xaa,
0xd9, 0x2f, 0x1f, 0x19, 0x15, 0x14, 0x15, 0x19, 0x1f, 0x2c,
0x4e, 0xb9, 0xa7, 0x9f, 0x9c, 0x9b, 0x9c, 0x9f, 0xa7, 0xb3,
0xcf, 0x47, 0x34, 0x2d, 0x2a, 0x2a, 0x2c, 0x31, 0x3a, 0x47,
0x5f, 0xe4, 0xd8, 0xd9, 0xe9, 0x64, 0x4f, 0x49, 0x46, 0x49,
0x58, 0xde, 0xc2, 0xb5, 0xad, 0xa8, 0xa6, 0xa6, 0xa9, 0xaf,
0xbf, 0x56, 0x32, 0x26, 0x1e, 0x1b, 0x19, 0x1a, 0x1d, 0x24,
0x33, 0xdd, 0xad, 0x9f, 0x98, 0x94, 0x92, 0x93, 0x97, 0x9e,
0xac, 0xf8, 0x2c, 0x1d, 0x16, 0x11, 0xf, 0x10, 0x15, 0x1b,
0x29, 0x55, 0xae, 0x9e, 0x97, 0x92, 0x90, 0x91, 0x95, 0x9c,
0xa8, 0xca, 0x35, 0x22, 0x1a, 0x16, 0x15, 0x16, 0x19, 0x1f,
0x2b, 0x47, 0xbe, 0xab, 0xa2, 0x9e, 0x9d, 0x9e, 0xa2, 0xa9,
0xb4, 0xcc, 0x4f, 0x3a, 0x32, 0x2f, 0x2f, 0x32, 0x39, 0x41,
0x4f, 0x67, 0xf5, 0xf5, 0x67, 0x51, 0x46, 0x3e, 0x3b, 0x3b,
0x3f, 0x4d, 0xe2, 0xbe, 0xb0, 0xa9, 0xa4, 0xa1, 0xa1, 0xa5,
0xab, 0xba, 0x64, 0x33, 0x25, 0x1d, 0x19, 0x17, 0x18, 0x1b,
0x20, 0x2e, 0x72, 0xae, 0x9f, 0x98, 0x94, 0x91, 0x92, 0x96,
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0x1a, 0x26, 0x48, 0xb2, 0x9f, 0x98, 0x93, 0x91, 0x92, 0x95,
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0xab, 0xb6, 0xcb, 0x5a, 0x40, 0x39, 0x36, 0x37, 0x3b, 0x43,
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0x28, 0x24, 0x23, 0x25, 0x29, 0x33, 0x4f, 0xbf, 0xab, 0xa0,
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0x34, 0x29, 0x22, 0x1e, 0x1d, 0x1e, 0x22, 0x2b, 0x3e, 0xc7,
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0xcf, 0x47, 0x34, 0x2d, 0x2a, 0x2a, 0x2c, 0x31, 0x3a, 0x47,
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0xbf, 0x56, 0x32, 0x26, 0x1e, 0x1b, 0x19, 0x1a, 0x1d, 0x24,
0x33, 0xdd, 0xad, 0x9f, 0x98, 0x94, 0x92, 0x93, 0x97, 0x9e,
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0x29, 0x55, 0xae, 0x9e, 0x97, 0x92, 0x90, 0x91, 0x95, 0x9c,
0xa8, 0xca, 0x35, 0x22, 0x1a, 0x16, 0x15, 0x16, 0x19, 0x1f,
0x2b, 0x47, 0xbe, 0xab, 0xa2, 0x9e, 0x9d, 0x9e, 0xa2, 0xa9,
0xb4, 0xcc, 0x4f, 0x3a, 0x32, 0x2f, 0x2f, 0x32, 0x39, 0x41,
0x4f, 0x67, 0xf5, 0xf5, 0x67, 0x51, 0x46, 0x3e, 0x3b, 0x3b,
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0xab, 0xba, 0x64, 0x33, 0x25, 0x1d, 0x19, 0x17, 0x18, 0x1b,
0x20, 0x2e, 0x72, 0xae, 0x9f, 0x98, 0x94, 0x91, 0x92, 0x96,
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0x59, 0x2a, 0x1c, 0x16, 0x11, 0x10, 0x11, 0x16, 0x1d, 0x2b };

889
channels/chan_ixj.c
Unescape View File

@ -0,0 +1,889 @@
/*
* Asterisk -- A telephony toolkit for Linux.
*
* QuickNet Internet Phone Jack Channel
*
* Copyright (C) 1999, Adtran Inc. and Linux Support Services, LLC
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#include <stdio.h>
#include <pthread.h>
#include <string.h>
#include <asterisk/channel.h>
#include <asterisk/channel_pvt.h>
#include <asterisk/config.h>
#include <asterisk/logger.h>
#include <asterisk/module.h>
#include <asterisk/pbx.h>
#include <asterisk/options.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/if_packet.h>
#include <linux/if_ether.h>
#include "ixjuser.h"
#include "DialTone.h"
#define IXJ_MAX_BUF 480
static char *desc = "QuickNet Internet Phone Jack";
static char *type = "PhoneJack";
static char *tdesc = "QuickNet Internet Phone Jack";
static char *config = "ixj.conf";
/* Default context for dialtone mode */
static char context[AST_MAX_EXTENSION] = "default";
char *ignore_rcs_id_for_chan_ixj = ixjuser_h_rcsid;
static int usecnt =0;
static pthread_mutex_t usecnt_lock = PTHREAD_MUTEX_INITIALIZER;
/* Protect the interface list (of ixj_pvt's) */
static pthread_mutex_t iflock = PTHREAD_MUTEX_INITIALIZER;
/* Protect the monitoring thread, so only one process can kill or start it, and not
when it's doing something critical. */
static pthread_mutex_t monlock = PTHREAD_MUTEX_INITIALIZER;
/* This is the thread for the monitor which checks for input on the channels
which are not currently in use. */
static pthread_t monitor_thread = -1;
static int restart_monitor();
/* The private structures of the Phone Jack channels are linked for
selecting outgoing channels */
#define MODE_DIALTONE 1
#define MODE_IMMEDIATE 2
static struct ixj_pvt {
int fd; /* Raw file descriptor for this device */
struct ast_channel *owner; /* Channel we belong to, possibly NULL */
int mode; /* Is this in the */
int lastformat; /* Last output format */
int lastinput; /* Last input format */
int ministate; /* Miniature state, for dialtone mode */
char dev[256]; /* Device name */
struct ixj_pvt *next; /* Next channel in list */
struct ast_frame fr; /* Frame */
char offset[AST_FRIENDLY_OFFSET];
char buf[IXJ_MAX_BUF]; /* Static buffer for reading frames */
int obuflen;
int dialtone;
char context[AST_MAX_EXTENSION];
char obuf[IXJ_MAX_BUF * 2];
char ext[AST_MAX_EXTENSION];
} *iflist = NULL;
static int ixj_digit(struct ast_channel *ast, char digit)
{
struct ixj_pvt *p;
int outdigit;
p = ast->pvt->pvt;
switch(digit) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
outdigit = digit - '0' + 1;
break;
case '*':
outdigit = 11;
break;
case '#':
outdigit = 12;
break;
default:
ast_log(LOG_WARNING, "Unknown digit '%c'\n", digit);
return -1;
}
ioctl(p->fd, IXJCTL_PLAY_TONE, digit);
return 0;
}
static int ixj_call(struct ast_channel *ast, char *dest, int timeout)
{
struct ixj_pvt *p;
p = ast->pvt->pvt;
if ((ast->state != AST_STATE_DOWN) && (ast->state != AST_STATE_RESERVED)) {
ast_log(LOG_WARNING, "ixj_call called on %s, neither down nor reserved\n", ast->name);
return -1;
}
/* When we call, it just works, really, there's no destination... Just
ring the phone and wait for someone to answer */
ast_log(LOG_DEBUG, "Ringing %s on %s (%d)\n", dest, ast->name, ast->fd);
ioctl(p->fd, IXJCTL_RING_START);
ast->state = AST_STATE_RINGING;
return 0;
}
static int ixj_hangup(struct ast_channel *ast)
{
struct ixj_pvt *p;
p = ast->pvt->pvt;
ast_log(LOG_DEBUG, "ixj_hangup(%s)\n", ast->name);
if (!ast->pvt->pvt) {
ast_log(LOG_WARNING, "Asked to hangup channel not connected\n");
return 0;
}
/* XXX Is there anything we can do to really hang up except stop recording? */
ast->state = AST_STATE_DOWN;
if (ioctl(p->fd, IXJCTL_REC_STOP))
ast_log(LOG_WARNING, "Failed to stop recording\n");
if (ioctl(p->fd, IXJCTL_PLAY_STOP))
ast_log(LOG_WARNING, "Failed to stop playing\n");
if (ioctl(p->fd, IXJCTL_RING_STOP))
ast_log(LOG_WARNING, "Failed to stop ringing\n");
if (ioctl(p->fd, IXJCTL_CPT_STOP))
ast_log(LOG_WARNING, "Failed to stop sounds\n");
/* If they're off hook, give a busy signal */
if (ioctl(p->fd, IXJCTL_HOOKSTATE))
ioctl(p->fd, IXJCTL_BUSY);
p->lastformat = -1;
p->lastinput = -1;
p->ministate = 0;
p->obuflen = 0;
p->dialtone = 0;
memset(p->ext, 0, sizeof(p->ext));
((struct ixj_pvt *)(ast->pvt->pvt))->owner = NULL;
pthread_mutex_lock(&usecnt_lock);
usecnt--;
if (usecnt < 0)
ast_log(LOG_WARNING, "Usecnt < 0???\n");
pthread_mutex_unlock(&usecnt_lock);
ast_update_use_count();
if (option_verbose > 2)
ast_verbose( VERBOSE_PREFIX_3 "Hungup '%s'\n", ast->name);
ast->pvt->pvt = NULL;
ast->state = AST_STATE_DOWN;
restart_monitor();
return 0;
}
static int ixj_setup(struct ast_channel *ast)
{
struct ixj_pvt *p;
p = ast->pvt->pvt;
ioctl(p->fd, IXJCTL_CPT_STOP);
/* Nothing to answering really, just start recording */
if (ast->format & AST_FORMAT_G723_1) {
/* Prefer g723 */
ioctl(p->fd, IXJCTL_REC_STOP);
if (p->lastinput != AST_FORMAT_G723_1) {
p->lastinput = AST_FORMAT_G723_1;
if (ioctl(p->fd, IXJCTL_REC_CODEC, G723_63)) {
ast_log(LOG_WARNING, "Failed to set codec to g723.1\n");
return -1;
}
}
} else if (ast->format & AST_FORMAT_SLINEAR) {
ioctl(p->fd, IXJCTL_REC_STOP);
if (p->lastinput != AST_FORMAT_SLINEAR) {
p->lastinput = AST_FORMAT_SLINEAR;
if (ioctl(p->fd, IXJCTL_REC_CODEC, LINEAR16)) {
ast_log(LOG_WARNING, "Failed to set codec to signed linear 16\n");
return -1;
}
}
} else {
ast_log(LOG_WARNING, "Can't do format %d\n", ast->format);
return -1;
}
if (ioctl(p->fd, IXJCTL_REC_START)) {
ast_log(LOG_WARNING, "Failed to start recording\n");
return -1;
}
return 0;
}
static int ixj_answer(struct ast_channel *ast)
{
ixj_setup(ast);
ast_log(LOG_DEBUG, "ixj_answer(%s)\n", ast->name);
ast->rings = 0;
ast->state = AST_STATE_UP;
return 0;
}
static char ixj_2digit(char c)
{
if (c == 12)
return '#';
else if (c == 11)
return '*';
else if ((c < 10) && (c >= 0))
return '0' + c - 1;
else
return '?';
}
static struct ast_frame *ixj_read(struct ast_channel *ast)
{
int res;
IXJ_EXCEPTION ixje;
struct ixj_pvt *p = ast->pvt->pvt;
char digit;
/* Some nice norms */
p->fr.datalen = 0;
p->fr.timelen = 0;
p->fr.data = NULL;
p->fr.src = type;
p->fr.offset = 0;
p->fr.mallocd=0;
ixje.bytes = ioctl(p->fd, IXJCTL_EXCEPTION);
if (ixje.bits.dtmf_ready) {
/* We've got a digit -- Just handle this nicely and easily */
digit = ioctl(p->fd, IXJCTL_GET_DTMF_ASCII);
p->fr.subclass = digit;
p->fr.frametype = AST_FRAME_DTMF;
return &p->fr;
}
if (ixje.bits.hookstate) {
res = ioctl(p->fd, IXJCTL_HOOKSTATE);
/* See if we've gone on hook, if so, notify by returning NULL */
if (!res)
return NULL;
else {
if (ast->state == AST_STATE_RINGING) {
/* They've picked up the phone */
p->fr.frametype = AST_FRAME_CONTROL;
p->fr.subclass = AST_CONTROL_ANSWER;
ixj_setup(ast);
ast->state = AST_STATE_UP;
return &p->fr;
} else
ast_log(LOG_WARNING, "Got off hook in weird state\n");
}
}
#if 0
if (ixje.bits.pstn_ring)
ast_verbose("Unit is ringing\n");
if (ixje.bits.caller_id) {
ast_verbose("We have caller ID: %s\n");
}
#endif
/* Try to read some data... */
CHECK_BLOCKING(ast);
res = read(p->fd, p->buf, IXJ_MAX_BUF);
ast->blocking = 0;
if (res < 0) {
ast_log(LOG_WARNING, "Error reading: %s\n", strerror(errno));
return NULL;
}
p->fr.data = p->buf;
p->fr.datalen = res;
p->fr.frametype = AST_FRAME_VOICE;
p->fr.subclass = p->lastinput;
p->fr.offset = AST_FRIENDLY_OFFSET;
return &p->fr;
}
static int ixj_write_buf(struct ixj_pvt *p, char *buf, int len, int frlen)
{
int res;
/* Store as much of the buffer as we can, then write fixed frames */
int space = sizeof(p->obuf) - p->obuflen;
/* Make sure we have enough buffer space to store the frame */
if (space < len)
len = space;
memcpy(p->obuf + p->obuflen, buf, len);
p->obuflen += len;
while(p->obuflen > frlen) {
#if 0
res = frlen;
ast_log(LOG_DEBUG, "Wrote %d bytes\n", res);
#else
res = write(p->fd, p->obuf, frlen);
#endif
if (res != frlen) {
if (res < 1) {
ast_log(LOG_WARNING, "Write failed: %s\n", strerror(errno));
return -1;
} else {
ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frlen);
}
}
p->obuflen -= frlen;
/* Move memory if necessary */
if (p->obuflen)
memmove(p->obuf, p->obuf + frlen, p->obuflen);
}
return len;
}
static int ixj_write(struct ast_channel *ast, struct ast_frame *frame)
{
struct ixj_pvt *p = ast->pvt->pvt;
int res;
int maxfr=0;
char *pos;
int sofar;
int expected;
/* Write a frame of (presumably voice) data */
if (frame->frametype != AST_FRAME_VOICE) {
ast_log(LOG_WARNING, "Don't know what to do with frame type '%d'\n", frame->frametype);
ast_frfree(frame);
return -1;
}
if (!(frame->subclass & (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR))) {
ast_log(LOG_WARNING, "Cannot handle frames in %d format\n", frame->subclass);
ast_frfree(frame);
return -1;
}
if (frame->subclass == AST_FORMAT_G723_1) {
if (p->lastformat != AST_FORMAT_G723_1) {
ioctl(p->fd, IXJCTL_PLAY_STOP);
if (ioctl(p->fd, IXJCTL_PLAY_CODEC, G723_63)) {
ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
return -1;
}
p->lastformat = AST_FORMAT_G723_1;
/* Reset output buffer */
p->obuflen = 0;
}
if (frame->datalen > 24) {
ast_log(LOG_WARNING, "Frame size too large for G.723.1 (%d bytes)\n", frame->datalen);
return -1;
}
maxfr = 24;
} else if (frame->subclass == AST_FORMAT_SLINEAR) {
if (p->lastformat != AST_FORMAT_SLINEAR) {
ioctl(p->fd, IXJCTL_PLAY_STOP);
if (ioctl(p->fd, IXJCTL_PLAY_CODEC, LINEAR16)) {
ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
return -1;
}
p->lastformat = AST_FORMAT_SLINEAR;
/* Reset output buffer */
p->obuflen = 0;
}
maxfr = 480;
}
if (ioctl(p->fd, IXJCTL_PLAY_START)) {
ast_log(LOG_WARNING, "Failed to start recording\n");
return -1;
}
/* If we get here, we have a voice frame of Appropriate data */
sofar = 0;
pos = frame->data;
while(sofar < frame->datalen) {
/* Write in no more than maxfr sized frames */
expected = frame->datalen - sofar;
if (maxfr < expected)
expected = maxfr;
/* XXX Internet Phone Jack does not handle the 4-byte VAD frame properly! XXX */
if (frame->datalen != 4) {
res = ixj_write_buf(p, pos, expected, maxfr);
if (res != expected) {
if (res < 0)
ast_log(LOG_WARNING, "Write returned error (%s)\n", strerror(errno));
else
ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frame->datalen);
return -1;
}
sofar += res;
pos += res;
} else
sofar += 4;
}
return 0;
}
static struct ast_channel *ixj_new(struct ixj_pvt *i, int state)
{
struct ast_channel *tmp;
tmp = ast_channel_alloc();
if (tmp) {
snprintf(tmp->name, sizeof(tmp->name), "PhoneJack/%s", i->dev + 5);
tmp->type = type;
tmp->fd = i->fd;
/* XXX Switching formats silently causes kernel panics XXX */
tmp->format = AST_FORMAT_G723_1 /* | AST_FORMAT_SLINEAR */;
tmp->state = state;
if (state == AST_STATE_RING)
tmp->rings = 1;
tmp->pvt->pvt = i;
tmp->pvt->send_digit = ixj_digit;
tmp->pvt->call = ixj_call;
tmp->pvt->hangup = ixj_hangup;
tmp->pvt->answer = ixj_answer;
tmp->pvt->read = ixj_read;
tmp->pvt->write = ixj_write;
strncpy(tmp->context, i->context, sizeof(tmp->context));
if (strlen(i->ext))
strncpy(tmp->exten, i->ext, sizeof(tmp->exten));
i->owner = tmp;
pthread_mutex_lock(&usecnt_lock);
usecnt++;
pthread_mutex_unlock(&usecnt_lock);
ast_update_use_count();
if (state != AST_STATE_DOWN) {
if (state == AST_STATE_RING)
ioctl(tmp->fd, IXJCTL_RINGBACK);
if (ast_pbx_start(tmp)) {
ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
ast_hangup(tmp);
}
}
} else
ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
return tmp;
}
static void ixj_mini_packet(struct ixj_pvt *i)
{
int res;
char buf[1024];
/* Ignore stuff we read... */
res = read(i->fd, buf, sizeof(buf));
if (res < 1) {
ast_log(LOG_WARNING, "Read returned %d\n", res);
return;
}
}
static void ixj_check_exception(struct ixj_pvt *i)
{
int offhook=0;
char digit[2] = {0 , 0};
IXJ_EXCEPTION ixje;
/* XXX Do something XXX */
#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) {
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) {
ixj_setup(i->owner);
}
} else if ((strlen(i->ext) >= ast_pbx_longest_extension(i->context)) &&
(strlen(i->ext) >= ast_pbx_longest_extension("default"))) {
/* 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) {
#if 0
/* XXX Bug in the Phone jack, you can't detect DTMF when playing a tone XXX */
ioctl(i->fd, IXJCTL_DIALTONE);
#else
/* Play the dialtone */
i->dialtone++;
ioctl(i->fd, IXJCTL_PLAY_STOP);
ioctl(i->fd, IXJCTL_PLAY_CODEC, ULAW);
ioctl(i->fd, IXJCTL_PLAY_START);
#endif
}
} else {
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;
}
struct ixj_pvt *mkif(char *iface, int mode)
{
/* Make a ixj_pvt structure for this interface */
struct ixj_pvt *tmp;
int flags;
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;
flags = fcntl(tmp->fd, F_GETFL);
fcntl(tmp->fd, F_SETFL, flags | O_NONBLOCK);
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;
}
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