/* * Asterisk -- An open source telephony toolkit. * * Copyright (C) 1999 - 2005, Digium, Inc. * * Mark Spencer * * 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 * * \ingroup channel_drivers */ #include #include #include #include #include #include #include #include #include #include #include #include #include /* Still use some IXJ specific stuff */ #include #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) # include #endif #include #include "asterisk.h" ASTERISK_FILE_VERSION(__FILE__, "Revision: 12136 ") #include "asterisk/lock.h" #include "asterisk/channel.h" #include "asterisk/config.h" #include "asterisk/logger.h" #include "asterisk/module.h" #include "asterisk/pbx.h" #include "asterisk/options.h" #include "asterisk/utils.h" #include "asterisk/callerid.h" #include "asterisk/causes.h" #include "asterisk/stringfields.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 desc[] = "Linux Telephony API Support"; 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 usecnt =0; static int echocancel = AEC_OFF; static int silencesupression = 0; static int prefformat = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW; AST_MUTEX_DEFINE_STATIC(usecnt_lock); /* 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 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(struct ast_channel *ast, char digit); 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); static const struct ast_channel_tech phone_tech = { .type = "Phone", .description = tdesc, .capabilities = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW, .requester = phone_request, .send_digit = phone_digit, .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 = phone_digit, .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) { struct phone_pvt *p = chan->tech_pvt; int res=-1; ast_log(LOG_DEBUG, "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; 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(struct ast_channel *ast, char digit) { struct phone_pvt *p; int outdigit; p = ast->tech_pvt; ast_log(LOG_NOTICE, "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_log(LOG_NOTICE, "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; time_t UtcTime; struct tm tm; int start; time(&UtcTime); localtime_r(&UtcTime,&tm); 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" , but not always complete */ if (ast_strlen_zero(ast->cid.cid_name)) strncpy(cid.name, DEFAULT_CALLER_ID, sizeof(cid.name) - 1); else strncpy(cid.name, ast->cid.cid_name, sizeof(cid.name) - 1); if (ast->cid.cid_num) strncpy(cid.number, ast->cid.cid_num, sizeof(cid.number) - 1); 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; } if (option_debug) ast_log(LOG_DEBUG, "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(ast, *digit++); } } 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; if (option_debug) ast_log(LOG_DEBUG, "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_log(LOG_DEBUG, "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)) { if (option_debug) ast_log(LOG_DEBUG, "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_mutex_lock(&usecnt_lock); usecnt--; if (usecnt < 0) ast_log(LOG_WARNING, "Usecnt < 0???\n"); ast_mutex_unlock(&usecnt_lock); ast_update_use_count(); if (option_verbose > 2) ast_verbose( VERBOSE_PREFIX_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_G723_1) { /* Prefer g723 */ 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_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n", ast->name, strerror(errno)); else ast_log(LOG_DEBUG, "Took linejack off hook\n"); } phone_setup(ast); if (option_debug) ast_log(LOG_DEBUG, "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) { if (option_debug) ast_log(LOG_DEBUG, "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) { if (option_debug) ast_log(LOG_DEBUG, "Hookstate changed\n"); res = ioctl(p->fd, PHONE_HOOKSTATE); /* See if we've gone on hook, if so, notify by returning NULL */ if (option_debug) ast_log(LOG_DEBUG, "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_MAX_AUDIO ? 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)) && 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_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); if (tmp) { tmp->tech = cur_tech; ast_string_field_build(tmp, name, "Phone/%s", i->dev + 5); tmp->fds[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; } ast_setstate(tmp, state); if (state == AST_STATE_RING) tmp->rings = 1; tmp->tech_pvt = i; strncpy(tmp->context, context, sizeof(tmp->context)-1); if (!ast_strlen_zero(i->ext)) strncpy(tmp->exten, i->ext, sizeof(tmp->exten)-1); else strncpy(tmp->exten, "s", sizeof(tmp->exten) - 1); if (!ast_strlen_zero(i->language)) ast_string_field_set(tmp, language, i->language); if (!ast_strlen_zero(i->cid_num)) tmp->cid.cid_num = strdup(i->cid_num); if (!ast_strlen_zero(i->cid_name)) tmp->cid.cid_name = strdup(i->cid_name); i->owner = tmp; ast_mutex_lock(&usecnt_lock); usecnt++; ast_mutex_unlock(&usecnt_lock); ast_update_use_count(); 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_log(LOG_DEBUG, "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) { 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 */ if (option_debug) ast_log(LOG_DEBUG, "%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_mutex_lock(&usecnt_lock); usecnt++; ast_mutex_unlock(&usecnt_lock); ast_update_use_count(); /* 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->dialtone) { ast_mutex_lock(&usecnt_lock); usecnt--; ast_mutex_unlock(&usecnt_lock); ast_update_use_count(); } 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) { /* 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) { /* 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_log(LOG_DEBUG, "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(&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(char *iface, int mode, int txgain, int rxgain) { /* Make a phone_pvt structure for this interface */ struct phone_pvt *tmp; int flags; tmp = malloc(sizeof(struct phone_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; } if (mode == MODE_FXO) { if (ioctl(tmp->fd, IXJCTL_PORT, PORT_PSTN)) ast_log(LOG_DEBUG, "Unable to set port to PSTN\n"); } else { if (ioctl(tmp->fd, IXJCTL_PORT, PORT_POTS)) if (mode != MODE_FXS) ast_log(LOG_DEBUG, "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_log(LOG_DEBUG, "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)); strncpy(tmp->language, language, sizeof(tmp->language)-1); strncpy(tmp->dev, iface, sizeof(tmp->dev)-1); strncpy(tmp->context, context, sizeof(tmp->context)-1); tmp->next = NULL; tmp->obuflen = 0; tmp->dialtone = 0; tmp->cpt = 0; strncpy(tmp->cid_num, cid_num, sizeof(tmp->cid_num)-1); strncpy(tmp->cid_name, cid_name, sizeof(tmp->cid_name)-1); 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_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_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(char *gain_type, 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 */ 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 */ free(pl); } iflist = NULL; ast_mutex_unlock(&iflock); } else { ast_log(LOG_WARNING, "Unable to lock the monitor\n"); return -1; } return 0; } int unload_module(void) { return __unload_module(); } int load_module() { 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 */ cfg = ast_config_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 (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 -1; } 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 -1; } } else if (!strcasecmp(v->name, "silencesupression")) { silencesupression = ast_true(v->value); } else if (!strcasecmp(v->name, "language")) { strncpy(language, v->value, sizeof(language)-1); } 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, "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")) { strncpy(context, v->value, sizeof(context)-1); } else if (!strcasecmp(v->name, "format")) { 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 -1; } ast_config_destroy(cfg); /* And start the monitor for the first time */ restart_monitor(); return 0; } int usecount() { return usecnt; } char *description() { return (char *) desc; } char *key() { return ASTERISK_GPL_KEY; }