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-rw-r--r--trunk/channels/chan_phone.c1450
1 files changed, 1450 insertions, 0 deletions
diff --git a/trunk/channels/chan_phone.c b/trunk/channels/chan_phone.c
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index 000000000..233e5e829
--- /dev/null
+++ b/trunk/channels/chan_phone.c
@@ -0,0 +1,1450 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief Generic Linux Telephony Interface driver
+ *
+ * \author Mark Spencer <markster@digium.com>
+ *
+ * \ingroup channel_drivers
+ */
+
+/*** MODULEINFO
+ <depend>ixjuser</depend>
+ ***/
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include <ctype.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <signal.h>
+#ifdef HAVE_LINUX_COMPILER_H
+#include <linux/compiler.h>
+#endif
+#include <linux/telephony.h>
+/* Still use some IXJ specific stuff */
+#include <linux/version.h>
+#include <linux/ixjuser.h>
+
+#include "asterisk/lock.h"
+#include "asterisk/channel.h"
+#include "asterisk/config.h"
+#include "asterisk/module.h"
+#include "asterisk/pbx.h"
+#include "asterisk/utils.h"
+#include "asterisk/callerid.h"
+#include "asterisk/causes.h"
+#include "asterisk/stringfields.h"
+#include "asterisk/musiconhold.h"
+
+#include "DialTone.h"
+
+#ifdef QTI_PHONEJACK_TJ_PCI /* check for the newer quicknet driver v.3.1.0 which has this symbol */
+#define QNDRV_VER 310
+#else
+#define QNDRV_VER 100
+#endif
+
+#if QNDRV_VER > 100
+#ifdef __linux__
+#define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
+#else /* FreeBSD and others */
+#define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, x);
+#endif /* __linux__ */
+#else /* older driver */
+#define IXJ_PHONE_RING_START(x) ioctl(p->fd, PHONE_RING_START, &x);
+#endif
+
+#define DEFAULT_CALLER_ID "Unknown"
+#define PHONE_MAX_BUF 480
+#define DEFAULT_GAIN 0x100
+
+static const char tdesc[] = "Standard Linux Telephony API Driver";
+static const char config[] = "phone.conf";
+
+/* Default context for dialtone mode */
+static char context[AST_MAX_EXTENSION] = "default";
+
+/* Default language */
+static char language[MAX_LANGUAGE] = "";
+
+static int echocancel = AEC_OFF;
+
+static int silencesupression = 0;
+
+static int prefformat = AST_FORMAT_G729A | AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW;
+
+/* Protect the interface list (of phone_pvt's) */
+AST_MUTEX_DEFINE_STATIC(iflock);
+
+/* Protect the monitoring thread, so only one process can kill or start it, and not
+ when it's doing something critical. */
+AST_MUTEX_DEFINE_STATIC(monlock);
+
+/* Boolean value whether the monitoring thread shall continue. */
+static unsigned int monitor;
+
+/* 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 = AST_PTHREADT_NULL;
+
+static int restart_monitor(void);
+
+/* The private structures of the Phone Jack channels are linked for
+ selecting outgoing channels */
+
+#define MODE_DIALTONE 1
+#define MODE_IMMEDIATE 2
+#define MODE_FXO 3
+#define MODE_FXS 4
+#define MODE_SIGMA 5
+
+static struct phone_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 phone_pvt *next; /* Next channel in list */
+ struct ast_frame fr; /* Frame */
+ char offset[AST_FRIENDLY_OFFSET];
+ char buf[PHONE_MAX_BUF]; /* Static buffer for reading frames */
+ int obuflen;
+ int dialtone;
+ int txgain, rxgain; /* gain control for playing, recording */
+ /* 0x100 - 1.0, 0x200 - 2.0, 0x80 - 0.5 */
+ int cpt; /* Call Progress Tone playing? */
+ int silencesupression;
+ char context[AST_MAX_EXTENSION];
+ char obuf[PHONE_MAX_BUF * 2];
+ char ext[AST_MAX_EXTENSION];
+ char language[MAX_LANGUAGE];
+ char cid_num[AST_MAX_EXTENSION];
+ char cid_name[AST_MAX_EXTENSION];
+} *iflist = NULL;
+
+static char cid_num[AST_MAX_EXTENSION];
+static char cid_name[AST_MAX_EXTENSION];
+
+static struct ast_channel *phone_request(const char *type, int format, void *data, int *cause);
+static int phone_digit_begin(struct ast_channel *ast, char digit);
+static int phone_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
+static int phone_call(struct ast_channel *ast, char *dest, int timeout);
+static int phone_hangup(struct ast_channel *ast);
+static int phone_answer(struct ast_channel *ast);
+static struct ast_frame *phone_read(struct ast_channel *ast);
+static int phone_write(struct ast_channel *ast, struct ast_frame *frame);
+static struct ast_frame *phone_exception(struct ast_channel *ast);
+static int phone_send_text(struct ast_channel *ast, const char *text);
+static int phone_fixup(struct ast_channel *old, struct ast_channel *new);
+static int phone_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen);
+
+static const struct ast_channel_tech phone_tech = {
+ .type = "Phone",
+ .description = tdesc,
+ .capabilities = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW | AST_FORMAT_G729A,
+ .requester = phone_request,
+ .send_digit_begin = phone_digit_begin,
+ .send_digit_end = phone_digit_end,
+ .call = phone_call,
+ .hangup = phone_hangup,
+ .answer = phone_answer,
+ .read = phone_read,
+ .write = phone_write,
+ .exception = phone_exception,
+ .indicate = phone_indicate,
+ .fixup = phone_fixup
+};
+
+static struct ast_channel_tech phone_tech_fxs = {
+ .type = "Phone",
+ .description = tdesc,
+ .requester = phone_request,
+ .send_digit_begin = phone_digit_begin,
+ .send_digit_end = phone_digit_end,
+ .call = phone_call,
+ .hangup = phone_hangup,
+ .answer = phone_answer,
+ .read = phone_read,
+ .write = phone_write,
+ .exception = phone_exception,
+ .write_video = phone_write,
+ .send_text = phone_send_text,
+ .indicate = phone_indicate,
+ .fixup = phone_fixup
+};
+
+static struct ast_channel_tech *cur_tech;
+
+static int phone_indicate(struct ast_channel *chan, int condition, const void *data, size_t datalen)
+{
+ struct phone_pvt *p = chan->tech_pvt;
+ int res=-1;
+ ast_debug(1, "Requested indication %d on channel %s\n", condition, chan->name);
+ switch(condition) {
+ case AST_CONTROL_FLASH:
+ ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_ON_HOOK);
+ usleep(320000);
+ ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_OFF_HOOK);
+ p->lastformat = -1;
+ res = 0;
+ break;
+ case AST_CONTROL_HOLD:
+ ast_moh_start(chan, data, NULL);
+ break;
+ case AST_CONTROL_UNHOLD:
+ ast_moh_stop(chan);
+ break;
+ default:
+ ast_log(LOG_WARNING, "Condition %d is not supported on channel %s\n", condition, chan->name);
+ }
+ return res;
+}
+
+static int phone_fixup(struct ast_channel *old, struct ast_channel *new)
+{
+ struct phone_pvt *pvt = old->tech_pvt;
+ if (pvt && pvt->owner == old)
+ pvt->owner = new;
+ return 0;
+}
+
+static int phone_digit_begin(struct ast_channel *chan, char digit)
+{
+ /* XXX Modify this callback to let Asterisk support controlling the length of DTMF */
+ return 0;
+}
+
+static int phone_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
+{
+ struct phone_pvt *p;
+ int outdigit;
+ p = ast->tech_pvt;
+ ast_debug(1, "Dialed %c\n", digit);
+ 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';
+ break;
+ case '*':
+ outdigit = 11;
+ break;
+ case '#':
+ outdigit = 12;
+ break;
+ case 'f': /*flash*/
+ case 'F':
+ ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_ON_HOOK);
+ usleep(320000);
+ ioctl(p->fd, IXJCTL_PSTN_SET_STATE, PSTN_OFF_HOOK);
+ p->lastformat = -1;
+ return 0;
+ default:
+ ast_log(LOG_WARNING, "Unknown digit '%c'\n", digit);
+ return -1;
+ }
+ ast_debug(1, "Dialed %d\n", outdigit);
+ ioctl(p->fd, PHONE_PLAY_TONE, outdigit);
+ p->lastformat = -1;
+ return 0;
+}
+
+static int phone_call(struct ast_channel *ast, char *dest, int timeout)
+{
+ struct phone_pvt *p;
+
+ PHONE_CID cid;
+ struct timeval UtcTime = ast_tvnow();
+ struct ast_tm tm;
+ int start;
+
+ ast_localtime(&UtcTime, &tm, NULL);
+
+ memset(&cid, 0, sizeof(PHONE_CID));
+ if(&tm != NULL) {
+ snprintf(cid.month, sizeof(cid.month), "%02d",(tm.tm_mon + 1));
+ snprintf(cid.day, sizeof(cid.day), "%02d", tm.tm_mday);
+ snprintf(cid.hour, sizeof(cid.hour), "%02d", tm.tm_hour);
+ snprintf(cid.min, sizeof(cid.min), "%02d", tm.tm_min);
+ }
+ /* the standard format of ast->callerid is: "name" <number>, but not always complete */
+ if (ast_strlen_zero(ast->cid.cid_name))
+ strcpy(cid.name, DEFAULT_CALLER_ID);
+ else
+ ast_copy_string(cid.name, ast->cid.cid_name, sizeof(cid.name));
+
+ if (ast->cid.cid_num)
+ ast_copy_string(cid.number, ast->cid.cid_num, sizeof(cid.number));
+
+ p = ast->tech_pvt;
+
+ if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
+ ast_log(LOG_WARNING, "phone_call called on %s, neither down nor reserved\n", ast->name);
+ return -1;
+ }
+ ast_debug(1, "Ringing %s on %s (%d)\n", dest, ast->name, ast->fds[0]);
+
+ start = IXJ_PHONE_RING_START(cid);
+ if (start == -1)
+ return -1;
+
+ if (p->mode == MODE_FXS) {
+ char *digit = strchr(dest, '/');
+ if (digit)
+ {
+ digit++;
+ while (*digit)
+ phone_digit_end(ast, *digit++, 0);
+ }
+ }
+
+ ast_setstate(ast, AST_STATE_RINGING);
+ ast_queue_control(ast, AST_CONTROL_RINGING);
+ return 0;
+}
+
+static int phone_hangup(struct ast_channel *ast)
+{
+ struct phone_pvt *p;
+ p = ast->tech_pvt;
+ ast_debug(1, "phone_hangup(%s)\n", ast->name);
+ if (!ast->tech_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_setstate(ast, AST_STATE_DOWN);
+ if (ioctl(p->fd, PHONE_REC_STOP))
+ ast_log(LOG_WARNING, "Failed to stop recording\n");
+ if (ioctl(p->fd, PHONE_PLAY_STOP))
+ ast_log(LOG_WARNING, "Failed to stop playing\n");
+ if (ioctl(p->fd, PHONE_RING_STOP))
+ ast_log(LOG_WARNING, "Failed to stop ringing\n");
+ if (ioctl(p->fd, PHONE_CPT_STOP))
+ ast_log(LOG_WARNING, "Failed to stop sounds\n");
+
+ /* If it's an FXO, hang them up */
+ if (p->mode == MODE_FXO) {
+ if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
+ ast_debug(1, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",ast->name, strerror(errno));
+ }
+
+ /* If they're off hook, give a busy signal */
+ if (ioctl(p->fd, PHONE_HOOKSTATE)) {
+ ast_debug(1, "Got hunghup, giving busy signal\n");
+ ioctl(p->fd, PHONE_BUSY);
+ p->cpt = 1;
+ }
+ p->lastformat = -1;
+ p->lastinput = -1;
+ p->ministate = 0;
+ p->obuflen = 0;
+ p->dialtone = 0;
+ memset(p->ext, 0, sizeof(p->ext));
+ ((struct phone_pvt *)(ast->tech_pvt))->owner = NULL;
+ ast_module_unref(ast_module_info->self);
+ ast_verb(3, "Hungup '%s'\n", ast->name);
+ ast->tech_pvt = NULL;
+ ast_setstate(ast, AST_STATE_DOWN);
+ restart_monitor();
+ return 0;
+}
+
+static int phone_setup(struct ast_channel *ast)
+{
+ struct phone_pvt *p;
+ p = ast->tech_pvt;
+ ioctl(p->fd, PHONE_CPT_STOP);
+ /* Nothing to answering really, just start recording */
+ if (ast->rawreadformat == AST_FORMAT_G729A) {
+ /* Prefer g729 */
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (p->lastinput != AST_FORMAT_G729A) {
+ p->lastinput = AST_FORMAT_G729A;
+ if (ioctl(p->fd, PHONE_REC_CODEC, G729)) {
+ ast_log(LOG_WARNING, "Failed to set codec to g729\n");
+ return -1;
+ }
+ }
+ } else if (ast->rawreadformat == AST_FORMAT_G723_1) {
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (p->lastinput != AST_FORMAT_G723_1) {
+ p->lastinput = AST_FORMAT_G723_1;
+ if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
+ ast_log(LOG_WARNING, "Failed to set codec to g723.1\n");
+ return -1;
+ }
+ }
+ } else if (ast->rawreadformat == AST_FORMAT_SLINEAR) {
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (p->lastinput != AST_FORMAT_SLINEAR) {
+ p->lastinput = AST_FORMAT_SLINEAR;
+ if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
+ ast_log(LOG_WARNING, "Failed to set codec to signed linear 16\n");
+ return -1;
+ }
+ }
+ } else if (ast->rawreadformat == AST_FORMAT_ULAW) {
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (p->lastinput != AST_FORMAT_ULAW) {
+ p->lastinput = AST_FORMAT_ULAW;
+ if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
+ ast_log(LOG_WARNING, "Failed to set codec to uLaw\n");
+ return -1;
+ }
+ }
+ } else if (p->mode == MODE_FXS) {
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (p->lastinput != ast->rawreadformat) {
+ p->lastinput = ast->rawreadformat;
+ if (ioctl(p->fd, PHONE_REC_CODEC, ast->rawreadformat)) {
+ ast_log(LOG_WARNING, "Failed to set codec to %d\n",
+ ast->rawreadformat);
+ return -1;
+ }
+ }
+ } else {
+ ast_log(LOG_WARNING, "Can't do format %s\n", ast_getformatname(ast->rawreadformat));
+ return -1;
+ }
+ if (ioctl(p->fd, PHONE_REC_START)) {
+ ast_log(LOG_WARNING, "Failed to start recording\n");
+ return -1;
+ }
+ /* set the DTMF times (the default is too short) */
+ ioctl(p->fd, PHONE_SET_TONE_ON_TIME, 300);
+ ioctl(p->fd, PHONE_SET_TONE_OFF_TIME, 200);
+ return 0;
+}
+
+static int phone_answer(struct ast_channel *ast)
+{
+ struct phone_pvt *p;
+ p = ast->tech_pvt;
+ /* In case it's a LineJack, take it off hook */
+ if (p->mode == MODE_FXO) {
+ if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_OFF_HOOK))
+ ast_debug(1, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n", ast->name, strerror(errno));
+ else
+ ast_debug(1, "Took linejack off hook\n");
+ }
+ phone_setup(ast);
+ ast_debug(1, "phone_answer(%s)\n", ast->name);
+ ast->rings = 0;
+ ast_setstate(ast, AST_STATE_UP);
+ return 0;
+}
+
+#if 0
+static char phone_2digit(char c)
+{
+ if (c == 12)
+ return '#';
+ else if (c == 11)
+ return '*';
+ else if ((c < 10) && (c >= 0))
+ return '0' + c - 1;
+ else
+ return '?';
+}
+#endif
+
+static struct ast_frame *phone_exception(struct ast_channel *ast)
+{
+ int res;
+ union telephony_exception phonee;
+ struct phone_pvt *p = ast->tech_pvt;
+ char digit;
+
+ /* Some nice norms */
+ p->fr.datalen = 0;
+ p->fr.samples = 0;
+ p->fr.data = NULL;
+ p->fr.src = "Phone";
+ p->fr.offset = 0;
+ p->fr.mallocd=0;
+ p->fr.delivery = ast_tv(0,0);
+
+ phonee.bytes = ioctl(p->fd, PHONE_EXCEPTION);
+ if (phonee.bits.dtmf_ready) {
+ ast_debug(1, "phone_exception(): DTMF\n");
+
+ /* We've got a digit -- Just handle this nicely and easily */
+ digit = ioctl(p->fd, PHONE_GET_DTMF_ASCII);
+ p->fr.subclass = digit;
+ p->fr.frametype = AST_FRAME_DTMF;
+ return &p->fr;
+ }
+ if (phonee.bits.hookstate) {
+ ast_debug(1, "Hookstate changed\n");
+ res = ioctl(p->fd, PHONE_HOOKSTATE);
+ /* See if we've gone on hook, if so, notify by returning NULL */
+ ast_debug(1, "New hookstate: %d\n", res);
+ if (!res && (p->mode != MODE_FXO))
+ 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;
+ phone_setup(ast);
+ ast_setstate(ast, AST_STATE_UP);
+ return &p->fr;
+ } else
+ ast_log(LOG_WARNING, "Got off hook in weird state %d\n", ast->_state);
+ }
+ }
+#if 1
+ if (phonee.bits.pstn_ring)
+ ast_verbose("Unit is ringing\n");
+ if (phonee.bits.caller_id) {
+ ast_verbose("We have caller ID\n");
+ }
+ if (phonee.bits.pstn_wink)
+ ast_verbose("Detected Wink\n");
+#endif
+ /* Strange -- nothing there.. */
+ p->fr.frametype = AST_FRAME_NULL;
+ p->fr.subclass = 0;
+ return &p->fr;
+}
+
+static struct ast_frame *phone_read(struct ast_channel *ast)
+{
+ int res;
+ struct phone_pvt *p = ast->tech_pvt;
+
+
+ /* Some nice norms */
+ p->fr.datalen = 0;
+ p->fr.samples = 0;
+ p->fr.data = NULL;
+ p->fr.src = "Phone";
+ p->fr.offset = 0;
+ p->fr.mallocd=0;
+ p->fr.delivery = ast_tv(0,0);
+
+ /* Try to read some data... */
+ CHECK_BLOCKING(ast);
+ res = read(p->fd, p->buf, PHONE_MAX_BUF);
+ ast_clear_flag(ast, AST_FLAG_BLOCKING);
+ if (res < 0) {
+#if 0
+ if (errno == EAGAIN) {
+ ast_log(LOG_WARNING, "Null frame received\n");
+ p->fr.frametype = AST_FRAME_NULL;
+ p->fr.subclass = 0;
+ return &p->fr;
+ }
+#endif
+ ast_log(LOG_WARNING, "Error reading: %s\n", strerror(errno));
+ return NULL;
+ }
+ p->fr.data = p->buf;
+ if (p->mode != MODE_FXS)
+ switch(p->buf[0] & 0x3) {
+ case '0':
+ case '1':
+ /* Normal */
+ break;
+ case '2':
+ case '3':
+ /* VAD/CNG, only send two words */
+ res = 4;
+ break;
+ }
+ p->fr.samples = 240;
+ p->fr.datalen = res;
+ p->fr.frametype = p->lastinput <= AST_FORMAT_AUDIO_MASK ?
+ AST_FRAME_VOICE :
+ p->lastinput <= AST_FORMAT_PNG ? AST_FRAME_IMAGE
+ : AST_FRAME_VIDEO;
+ p->fr.subclass = p->lastinput;
+ p->fr.offset = AST_FRIENDLY_OFFSET;
+ /* Byteswap from little-endian to native-endian */
+ if (p->fr.subclass == AST_FORMAT_SLINEAR)
+ ast_frame_byteswap_le(&p->fr);
+ return &p->fr;
+}
+
+static int phone_write_buf(struct phone_pvt *p, const char *buf, int len, int frlen, int swap)
+{
+ 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;
+ if (swap)
+ ast_swapcopy_samples(p->obuf+p->obuflen, buf, len/2);
+ else
+ memcpy(p->obuf + p->obuflen, buf, len);
+ p->obuflen += len;
+ while(p->obuflen > frlen) {
+ res = write(p->fd, p->obuf, frlen);
+ if (res != frlen) {
+ if (res < 1) {
+/*
+ * Card is in non-blocking mode now and it works well now, but there are
+ * lot of messages like this. So, this message is temporarily disabled.
+ */
+ return 0;
+ } 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 phone_send_text(struct ast_channel *ast, const char *text)
+{
+ int length = strlen(text);
+ return phone_write_buf(ast->tech_pvt, text, length, length, 0) ==
+ length ? 0 : -1;
+}
+
+static int phone_write(struct ast_channel *ast, struct ast_frame *frame)
+{
+ struct phone_pvt *p = ast->tech_pvt;
+ int res;
+ int maxfr=0;
+ char *pos;
+ int sofar;
+ int expected;
+ int codecset = 0;
+ char tmpbuf[4];
+ /* Write a frame of (presumably voice) data */
+ if (frame->frametype != AST_FRAME_VOICE && p->mode != MODE_FXS) {
+ if (frame->frametype != AST_FRAME_IMAGE)
+ ast_log(LOG_WARNING, "Don't know what to do with frame type '%d'\n", frame->frametype);
+ return 0;
+ }
+ if (!(frame->subclass &
+ (AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW | AST_FORMAT_G729A)) &&
+ p->mode != MODE_FXS) {
+ ast_log(LOG_WARNING, "Cannot handle frames in %d format\n", frame->subclass);
+ return -1;
+ }
+#if 0
+ /* If we're not in up mode, go into up mode now */
+ if (ast->_state != AST_STATE_UP) {
+ ast_setstate(ast, AST_STATE_UP);
+ phone_setup(ast);
+ }
+#else
+ if (ast->_state != AST_STATE_UP) {
+ /* Don't try tos end audio on-hook */
+ return 0;
+ }
+#endif
+ if (frame->subclass == AST_FORMAT_G729A) {
+ if (p->lastformat != AST_FORMAT_G729A) {
+ ioctl(p->fd, PHONE_PLAY_STOP);
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (ioctl(p->fd, PHONE_PLAY_CODEC, G729)) {
+ ast_log(LOG_WARNING, "Unable to set G729 mode\n");
+ return -1;
+ }
+ if (ioctl(p->fd, PHONE_REC_CODEC, G729)) {
+ ast_log(LOG_WARNING, "Unable to set G729 mode\n");
+ return -1;
+ }
+ p->lastformat = AST_FORMAT_G729A;
+ p->lastinput = AST_FORMAT_G729A;
+ /* Reset output buffer */
+ p->obuflen = 0;
+ codecset = 1;
+ }
+ if (frame->datalen > 80) {
+ ast_log(LOG_WARNING, "Frame size too large for G.729 (%d bytes)\n", frame->datalen);
+ return -1;
+ }
+ maxfr = 80;
+ } else if (frame->subclass == AST_FORMAT_G723_1) {
+ if (p->lastformat != AST_FORMAT_G723_1) {
+ ioctl(p->fd, PHONE_PLAY_STOP);
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (ioctl(p->fd, PHONE_PLAY_CODEC, G723_63)) {
+ ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
+ return -1;
+ }
+ if (ioctl(p->fd, PHONE_REC_CODEC, G723_63)) {
+ ast_log(LOG_WARNING, "Unable to set G723.1 mode\n");
+ return -1;
+ }
+ p->lastformat = AST_FORMAT_G723_1;
+ p->lastinput = AST_FORMAT_G723_1;
+ /* Reset output buffer */
+ p->obuflen = 0;
+ codecset = 1;
+ }
+ 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, PHONE_PLAY_STOP);
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (ioctl(p->fd, PHONE_PLAY_CODEC, LINEAR16)) {
+ ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
+ return -1;
+ }
+ if (ioctl(p->fd, PHONE_REC_CODEC, LINEAR16)) {
+ ast_log(LOG_WARNING, "Unable to set 16-bit linear mode\n");
+ return -1;
+ }
+ p->lastformat = AST_FORMAT_SLINEAR;
+ p->lastinput = AST_FORMAT_SLINEAR;
+ codecset = 1;
+ /* Reset output buffer */
+ p->obuflen = 0;
+ }
+ maxfr = 480;
+ } else if (frame->subclass == AST_FORMAT_ULAW) {
+ if (p->lastformat != AST_FORMAT_ULAW) {
+ ioctl(p->fd, PHONE_PLAY_STOP);
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (ioctl(p->fd, PHONE_PLAY_CODEC, ULAW)) {
+ ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
+ return -1;
+ }
+ if (ioctl(p->fd, PHONE_REC_CODEC, ULAW)) {
+ ast_log(LOG_WARNING, "Unable to set uLaw mode\n");
+ return -1;
+ }
+ p->lastformat = AST_FORMAT_ULAW;
+ p->lastinput = AST_FORMAT_ULAW;
+ codecset = 1;
+ /* Reset output buffer */
+ p->obuflen = 0;
+ }
+ maxfr = 240;
+ } else {
+ if (p->lastformat != frame->subclass) {
+ ioctl(p->fd, PHONE_PLAY_STOP);
+ ioctl(p->fd, PHONE_REC_STOP);
+ if (ioctl(p->fd, PHONE_PLAY_CODEC, frame->subclass)) {
+ ast_log(LOG_WARNING, "Unable to set %d mode\n",
+ frame->subclass);
+ return -1;
+ }
+ if (ioctl(p->fd, PHONE_REC_CODEC, frame->subclass)) {
+ ast_log(LOG_WARNING, "Unable to set %d mode\n",
+ frame->subclass);
+ return -1;
+ }
+ p->lastformat = frame->subclass;
+ p->lastinput = frame->subclass;
+ codecset = 1;
+ /* Reset output buffer */
+ p->obuflen = 0;
+ }
+ maxfr = 480;
+ }
+ if (codecset) {
+ ioctl(p->fd, PHONE_REC_DEPTH, 3);
+ ioctl(p->fd, PHONE_PLAY_DEPTH, 3);
+ if (ioctl(p->fd, PHONE_PLAY_START)) {
+ ast_log(LOG_WARNING, "Failed to start playback\n");
+ return -1;
+ }
+ if (ioctl(p->fd, PHONE_REC_START)) {
+ ast_log(LOG_WARNING, "Failed to start recording\n");
+ return -1;
+ }
+ }
+ /* If we get here, we have a 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
+ we have to pad it to 24 bytes still. */
+ if (frame->datalen == 4) {
+ if (p->silencesupression) {
+ memset(tmpbuf + 4, 0, sizeof(tmpbuf) - 4);
+ memcpy(tmpbuf, frame->data, 4);
+ expected = 24;
+ res = phone_write_buf(p, tmpbuf, expected, maxfr, 0);
+ }
+ res = 4;
+ expected=4;
+ } else {
+ int swap = 0;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ if (frame->subclass == AST_FORMAT_SLINEAR)
+ swap = 1; /* Swap big-endian samples to little-endian as we copy */
+#endif
+ res = phone_write_buf(p, pos, expected, maxfr, swap);
+ }
+ if (res != expected) {
+ if ((errno != EAGAIN) && (errno != EINTR)) {
+ if (res < 0)
+ ast_log(LOG_WARNING, "Write returned error (%s)\n", strerror(errno));
+ /*
+ * Card is in non-blocking mode now and it works well now, but there are
+ * lot of messages like this. So, this message is temporarily disabled.
+ */
+#if 0
+ else
+ ast_log(LOG_WARNING, "Only wrote %d of %d bytes\n", res, frame->datalen);
+#endif
+ return -1;
+ } else /* Pretend it worked */
+ res = expected;
+ }
+ sofar += res;
+ pos += res;
+ }
+ return 0;
+}
+
+static struct ast_channel *phone_new(struct phone_pvt *i, int state, char *context)
+{
+ struct ast_channel *tmp;
+ struct phone_codec_data codec;
+ tmp = ast_channel_alloc(1, state, i->cid_num, i->cid_name, "", i->ext, i->context, 0, "Phone/%s", i->dev + 5);
+ if (tmp) {
+ tmp->tech = cur_tech;
+ ast_channel_set_fd(tmp, 0, i->fd);
+ /* XXX Switching formats silently causes kernel panics XXX */
+ if (i->mode == MODE_FXS &&
+ ioctl(i->fd, PHONE_QUERY_CODEC, &codec) == 0) {
+ if (codec.type == LINEAR16)
+ tmp->nativeformats =
+ tmp->rawreadformat =
+ tmp->rawwriteformat =
+ AST_FORMAT_SLINEAR;
+ else {
+ tmp->nativeformats =
+ tmp->rawreadformat =
+ tmp->rawwriteformat =
+ prefformat & ~AST_FORMAT_SLINEAR;
+ }
+ }
+ else {
+ tmp->nativeformats = prefformat;
+ tmp->rawreadformat = prefformat;
+ tmp->rawwriteformat = prefformat;
+ }
+ /* no need to call ast_setstate: the channel_alloc already did its job */
+ if (state == AST_STATE_RING)
+ tmp->rings = 1;
+ tmp->tech_pvt = i;
+ ast_copy_string(tmp->context, context, sizeof(tmp->context));
+ if (!ast_strlen_zero(i->ext))
+ ast_copy_string(tmp->exten, i->ext, sizeof(tmp->exten));
+ else
+ strcpy(tmp->exten, "s");
+ if (!ast_strlen_zero(i->language))
+ ast_string_field_set(tmp, language, i->language);
+
+ /* Don't use ast_set_callerid() here because it will
+ * generate a NewCallerID event before the NewChannel event */
+ tmp->cid.cid_ani = ast_strdup(i->cid_num);
+
+ i->owner = tmp;
+ ast_module_ref(ast_module_info->self);
+ if (state != AST_STATE_DOWN) {
+ if (state == AST_STATE_RING) {
+ ioctl(tmp->fds[0], PHONE_RINGBACK);
+ i->cpt = 1;
+ }
+ 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 phone_mini_packet(struct phone_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: %s\n", res, strerror(errno));
+ return;
+ }
+}
+
+static void phone_check_exception(struct phone_pvt *i)
+{
+ int offhook=0;
+ char digit[2] = {0 , 0};
+ union telephony_exception phonee;
+ /* XXX Do something XXX */
+#if 0
+ ast_debug(1, "Exception!\n");
+#endif
+ phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION);
+ if (phonee.bits.dtmf_ready) {
+ digit[0] = ioctl(i->fd, PHONE_GET_DTMF_ASCII);
+ if (i->mode == MODE_DIALTONE || i->mode == MODE_FXS || i->mode == MODE_SIGMA) {
+ ioctl(i->fd, PHONE_PLAY_STOP);
+ ioctl(i->fd, PHONE_REC_STOP);
+ ioctl(i->fd, PHONE_CPT_STOP);
+ i->dialtone = 0;
+ if (strlen(i->ext) < AST_MAX_EXTENSION - 1)
+ strncat(i->ext, digit, sizeof(i->ext) - strlen(i->ext) - 1);
+ if ((i->mode != MODE_FXS ||
+ !(phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION)) ||
+ !phonee.bits.dtmf_ready) &&
+ ast_exists_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
+ /* It's a valid extension in its context, get moving! */
+ phone_new(i, AST_STATE_RING, i->context);
+ /* No need to restart monitor, we are the monitor */
+ } else if (!ast_canmatch_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
+ /* There is nothing in the specified extension that can match anymore.
+ Try the default */
+ if (ast_exists_extension(NULL, "default", i->ext, 1, i->cid_num)) {
+ /* Check the default, too... */
+ phone_new(i, AST_STATE_RING, "default");
+ /* XXX This should probably be justified better XXX */
+ } else if (!ast_canmatch_extension(NULL, "default", i->ext, 1, i->cid_num)) {
+ /* It's not a valid extension, give a busy signal */
+ ast_debug(1, "%s can't match anything in %s or default\n", i->ext, i->context);
+ ioctl(i->fd, PHONE_BUSY);
+ i->cpt = 1;
+ }
+ }
+#if 0
+ ast_verbose("Extension is %s\n", i->ext);
+#endif
+ }
+ }
+ if (phonee.bits.hookstate) {
+ offhook = ioctl(i->fd, PHONE_HOOKSTATE);
+ if (offhook) {
+ if (i->mode == MODE_IMMEDIATE) {
+ phone_new(i, AST_STATE_RING, i->context);
+ } else if (i->mode == MODE_DIALTONE) {
+ ast_module_ref(ast_module_info->self);
+ /* Reset the extension */
+ i->ext[0] = '\0';
+ /* Play the dialtone */
+ i->dialtone++;
+ ioctl(i->fd, PHONE_PLAY_STOP);
+ ioctl(i->fd, PHONE_PLAY_CODEC, ULAW);
+ ioctl(i->fd, PHONE_PLAY_START);
+ i->lastformat = -1;
+ } else if (i->mode == MODE_SIGMA) {
+ ast_module_ref(ast_module_info->self);
+ /* Reset the extension */
+ i->ext[0] = '\0';
+ /* Play the dialtone */
+ i->dialtone++;
+ ioctl(i->fd, PHONE_DIALTONE);
+ }
+ } else {
+ if (i->dialtone)
+ ast_module_unref(ast_module_info->self);
+ memset(i->ext, 0, sizeof(i->ext));
+ if (i->cpt)
+ {
+ ioctl(i->fd, PHONE_CPT_STOP);
+ i->cpt = 0;
+ }
+ ioctl(i->fd, PHONE_PLAY_STOP);
+ ioctl(i->fd, PHONE_REC_STOP);
+ i->dialtone = 0;
+ i->lastformat = -1;
+ }
+ }
+ if (phonee.bits.pstn_ring) {
+ ast_verbose("Unit is ringing\n");
+ phone_new(i, AST_STATE_RING, i->context);
+ }
+ if (phonee.bits.caller_id)
+ ast_verbose("We have caller ID\n");
+
+
+}
+
+static void *do_monitor(void *data)
+{
+ fd_set rfds, efds;
+ int n, res;
+ struct phone_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 */
+ while (monitor) {
+ /* 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. */
+ /* Lock the interface list */
+ if (ast_mutex_lock(&iflock)) {
+ ast_log(LOG_ERROR, "Unable to grab interface lock\n");
+ return NULL;
+ }
+ /* Build the stuff we're going to select on, that is the socket of every
+ phone_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 && i->mode != MODE_SIGMA) {
+ /* Remember we're going to have to come back and play
+ more dialtones */
+ if (ast_tvzero(tv)) {
+ /* 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 */
+ ast_mutex_unlock(&iflock);
+
+ /* Wait indefinitely for something to happen */
+ if (dotone && i && i->mode != MODE_SIGMA) {
+ /* If we're ready to recycle the time, set it to 30 ms */
+ tonepos += 240;
+ if (tonepos >= sizeof(DialTone))
+ tonepos = 0;
+ if (ast_tvzero(tv)) {
+ tv = ast_tv(30000, 0);
+ }
+ res = ast_select(n + 1, &rfds, NULL, &efds, &tv);
+ } else {
+ res = ast_select(n + 1, &rfds, NULL, &efds, NULL);
+ tv = ast_tv(0,0);
+ tonepos = 0;
+ }
+ /* Okay, select has finished. Let's see what happened. */
+ if (res < 0) {
+ ast_debug(1, "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 (ast_mutex_lock(&iflock)) {
+ ast_log(LOG_WARNING, "Unable to lock the interface list\n");
+ continue;
+ }
+
+ i = iflist;
+ for(; i; i=i->next) {
+ if (FD_ISSET(i->fd, &rfds)) {
+ if (i->owner) {
+ continue;
+ }
+ phone_mini_packet(i);
+ }
+ if (FD_ISSET(i->fd, &efds)) {
+ if (i->owner) {
+ continue;
+ }
+ phone_check_exception(i);
+ }
+ }
+ ast_mutex_unlock(&iflock);
+ }
+ return NULL;
+
+}
+
+static int restart_monitor()
+{
+ /* If we're supposed to be stopped -- stay stopped */
+ if (monitor_thread == AST_PTHREADT_STOP)
+ return 0;
+ if (ast_mutex_lock(&monlock)) {
+ ast_log(LOG_WARNING, "Unable to lock monitor\n");
+ return -1;
+ }
+ if (monitor_thread == pthread_self()) {
+ ast_mutex_unlock(&monlock);
+ ast_log(LOG_WARNING, "Cannot kill myself\n");
+ return -1;
+ }
+ if (monitor_thread != AST_PTHREADT_NULL) {
+ if (ast_mutex_lock(&iflock)) {
+ ast_mutex_unlock(&monlock);
+ ast_log(LOG_WARNING, "Unable to lock the interface list\n");
+ return -1;
+ }
+ monitor = 0;
+ while (pthread_kill(monitor_thread, SIGURG) == 0)
+ sched_yield();
+ pthread_join(monitor_thread, NULL);
+ ast_mutex_unlock(&iflock);
+ }
+ monitor = 1;
+ /* Start a new monitor */
+ if (ast_pthread_create_background(&monitor_thread, NULL, do_monitor, NULL) < 0) {
+ ast_mutex_unlock(&monlock);
+ ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
+ return -1;
+ }
+ ast_mutex_unlock(&monlock);
+ return 0;
+}
+
+static struct phone_pvt *mkif(const char *iface, int mode, int txgain, int rxgain)
+{
+ /* Make a phone_pvt structure for this interface */
+ struct phone_pvt *tmp;
+ int flags;
+
+ tmp = ast_calloc(1, sizeof(*tmp));
+ if (tmp) {
+ tmp->fd = open(iface, O_RDWR);
+ if (tmp->fd < 0) {
+ ast_log(LOG_WARNING, "Unable to open '%s'\n", iface);
+ ast_free(tmp);
+ return NULL;
+ }
+ if (mode == MODE_FXO) {
+ if (ioctl(tmp->fd, IXJCTL_PORT, PORT_PSTN)) {
+ ast_debug(1, "Unable to set port to PSTN\n");
+ }
+ } else {
+ if (ioctl(tmp->fd, IXJCTL_PORT, PORT_POTS))
+ if (mode != MODE_FXS)
+ ast_debug(1, "Unable to set port to POTS\n");
+ }
+ ioctl(tmp->fd, PHONE_PLAY_STOP);
+ ioctl(tmp->fd, PHONE_REC_STOP);
+ ioctl(tmp->fd, PHONE_RING_STOP);
+ ioctl(tmp->fd, PHONE_CPT_STOP);
+ if (ioctl(tmp->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK))
+ ast_debug(1, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",iface, strerror(errno));
+ if (echocancel != AEC_OFF)
+ ioctl(tmp->fd, IXJCTL_AEC_START, echocancel);
+ if (silencesupression)
+ tmp->silencesupression = 1;
+#ifdef PHONE_VAD
+ ioctl(tmp->fd, PHONE_VAD, tmp->silencesupression);
+#endif
+ 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));
+ ast_copy_string(tmp->language, language, sizeof(tmp->language));
+ ast_copy_string(tmp->dev, iface, sizeof(tmp->dev));
+ ast_copy_string(tmp->context, context, sizeof(tmp->context));
+ tmp->next = NULL;
+ tmp->obuflen = 0;
+ tmp->dialtone = 0;
+ tmp->cpt = 0;
+ ast_copy_string(tmp->cid_num, cid_num, sizeof(tmp->cid_num));
+ ast_copy_string(tmp->cid_name, cid_name, sizeof(tmp->cid_name));
+ tmp->txgain = txgain;
+ ioctl(tmp->fd, PHONE_PLAY_VOLUME, tmp->txgain);
+ tmp->rxgain = rxgain;
+ ioctl(tmp->fd, PHONE_REC_VOLUME, tmp->rxgain);
+ }
+ return tmp;
+}
+
+static struct ast_channel *phone_request(const char *type, int format, void *data, int *cause)
+{
+ int oldformat;
+ struct phone_pvt *p;
+ struct ast_channel *tmp = NULL;
+ char *name = data;
+
+ /* Search for an unowned channel */
+ if (ast_mutex_lock(&iflock)) {
+ ast_log(LOG_ERROR, "Unable to lock interface list???\n");
+ return NULL;
+ }
+ p = iflist;
+ while(p) {
+ if (p->mode == MODE_FXS ||
+ format & (AST_FORMAT_G729A | AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW)) {
+ size_t length = strlen(p->dev + 5);
+ if (strncmp(name, p->dev + 5, length) == 0 &&
+ !isalnum(name[length])) {
+ if (!p->owner) {
+ tmp = phone_new(p, AST_STATE_DOWN, p->context);
+ break;
+ } else
+ *cause = AST_CAUSE_BUSY;
+ }
+ }
+ p = p->next;
+ }
+ ast_mutex_unlock(&iflock);
+ restart_monitor();
+ if (tmp == NULL) {
+ oldformat = format;
+ format &= (AST_FORMAT_G729A | AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW);
+ if (!format) {
+ ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
+ return NULL;
+ }
+ }
+ return tmp;
+}
+
+/* parse gain value from config file */
+static int parse_gain_value(const char *gain_type, const char *value)
+{
+ float gain;
+
+ /* try to scan number */
+ if (sscanf(value, "%f", &gain) != 1)
+ {
+ ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n",
+ value, gain_type, config);
+ return DEFAULT_GAIN;
+ }
+
+ /* multiplicate gain by 1.0 gain value */
+ gain = gain * (float)DEFAULT_GAIN;
+
+ /* percentage? */
+ if (value[strlen(value) - 1] == '%')
+ return (int)(gain / (float)100);
+
+ return (int)gain;
+}
+
+static int __unload_module(void)
+{
+ struct phone_pvt *p, *pl;
+ /* First, take us out of the channel loop */
+ if (cur_tech)
+ ast_channel_unregister(cur_tech);
+ if (!ast_mutex_lock(&iflock)) {
+ /* Hangup all interfaces if they have an owner */
+ p = iflist;
+ while(p) {
+ if (p->owner)
+ ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
+ p = p->next;
+ }
+ iflist = NULL;
+ ast_mutex_unlock(&iflock);
+ } else {
+ ast_log(LOG_WARNING, "Unable to lock the monitor\n");
+ return -1;
+ }
+ if (!ast_mutex_lock(&monlock)) {
+ if (monitor_thread > AST_PTHREADT_NULL) {
+ monitor = 0;
+ while (pthread_kill(monitor_thread, SIGURG) == 0)
+ sched_yield();
+ pthread_join(monitor_thread, NULL);
+ }
+ monitor_thread = AST_PTHREADT_STOP;
+ ast_mutex_unlock(&monlock);
+ } else {
+ ast_log(LOG_WARNING, "Unable to lock the monitor\n");
+ return -1;
+ }
+
+ if (!ast_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 */
+ ast_free(pl);
+ }
+ iflist = NULL;
+ ast_mutex_unlock(&iflock);
+ } else {
+ ast_log(LOG_WARNING, "Unable to lock the monitor\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int unload_module(void)
+{
+ return __unload_module();
+}
+
+static int load_module(void)
+{
+ struct ast_config *cfg;
+ struct ast_variable *v;
+ struct phone_pvt *tmp;
+ int mode = MODE_IMMEDIATE;
+ int txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN; /* default gain 1.0 */
+ struct ast_flags config_flags = { 0 };
+
+ cfg = ast_config_load(config, config_flags);
+
+ /* We *must* have a config file otherwise stop immediately */
+ if (!cfg) {
+ ast_log(LOG_ERROR, "Unable to load config %s\n", config);
+ return AST_MODULE_LOAD_DECLINE;
+ }
+ if (ast_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 AST_MODULE_LOAD_FAILURE;
+ }
+ v = ast_variable_browse(cfg, "interfaces");
+ while(v) {
+ /* Create the interface list */
+ if (!strcasecmp(v->name, "device")) {
+ tmp = mkif(v->value, mode, txgain, rxgain);
+ if (tmp) {
+ tmp->next = iflist;
+ iflist = tmp;
+
+ } else {
+ ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
+ ast_config_destroy(cfg);
+ ast_mutex_unlock(&iflock);
+ __unload_module();
+ return AST_MODULE_LOAD_FAILURE;
+ }
+ } else if (!strcasecmp(v->name, "silencesupression")) {
+ silencesupression = ast_true(v->value);
+ } else if (!strcasecmp(v->name, "language")) {
+ ast_copy_string(language, v->value, sizeof(language));
+ } else if (!strcasecmp(v->name, "callerid")) {
+ ast_callerid_split(v->value, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
+ } else if (!strcasecmp(v->name, "mode")) {
+ if (!strncasecmp(v->value, "di", 2))
+ mode = MODE_DIALTONE;
+ else if (!strncasecmp(v->value, "sig", 3))
+ mode = MODE_SIGMA;
+ else if (!strncasecmp(v->value, "im", 2))
+ mode = MODE_IMMEDIATE;
+ else if (!strncasecmp(v->value, "fxs", 3)) {
+ mode = MODE_FXS;
+ prefformat = 0x01ff0000; /* All non-voice */
+ }
+ else if (!strncasecmp(v->value, "fx", 2))
+ mode = MODE_FXO;
+ else
+ ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
+ } else if (!strcasecmp(v->name, "context")) {
+ ast_copy_string(context, v->value, sizeof(context));
+ } else if (!strcasecmp(v->name, "format")) {
+ if (!strcasecmp(v->value, "g729")) {
+ prefformat = AST_FORMAT_G729A;
+ } else if (!strcasecmp(v->value, "g723.1")) {
+ prefformat = AST_FORMAT_G723_1;
+ } else if (!strcasecmp(v->value, "slinear")) {
+ if (mode == MODE_FXS)
+ prefformat |= AST_FORMAT_SLINEAR;
+ else prefformat = AST_FORMAT_SLINEAR;
+ } else if (!strcasecmp(v->value, "ulaw")) {
+ prefformat = AST_FORMAT_ULAW;
+ } else
+ ast_log(LOG_WARNING, "Unknown format '%s'\n", v->value);
+ } else if (!strcasecmp(v->name, "echocancel")) {
+ if (!strcasecmp(v->value, "off")) {
+ echocancel = AEC_OFF;
+ } else if (!strcasecmp(v->value, "low")) {
+ echocancel = AEC_LOW;
+ } else if (!strcasecmp(v->value, "medium")) {
+ echocancel = AEC_MED;
+ } else if (!strcasecmp(v->value, "high")) {
+ echocancel = AEC_HIGH;
+ } else
+ ast_log(LOG_WARNING, "Unknown echo cancellation '%s'\n", v->value);
+ } else if (!strcasecmp(v->name, "txgain")) {
+ txgain = parse_gain_value(v->name, v->value);
+ } else if (!strcasecmp(v->name, "rxgain")) {
+ rxgain = parse_gain_value(v->name, v->value);
+ }
+ v = v->next;
+ }
+ ast_mutex_unlock(&iflock);
+
+ if (mode == MODE_FXS) {
+ phone_tech_fxs.capabilities = prefformat;
+ cur_tech = &phone_tech_fxs;
+ } else
+ cur_tech = (struct ast_channel_tech *) &phone_tech;
+
+ /* Make sure we can register our Adtranphone channel type */
+
+ if (ast_channel_register(cur_tech)) {
+ ast_log(LOG_ERROR, "Unable to register channel class 'Phone'\n");
+ ast_config_destroy(cfg);
+ __unload_module();
+ return AST_MODULE_LOAD_FAILURE;
+ }
+ ast_config_destroy(cfg);
+ /* And start the monitor for the first time */
+ restart_monitor();
+ return AST_MODULE_LOAD_SUCCESS;
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Linux Telephony API Support");