remove deprecated chan_modem drivers

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@7802 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 0 insertions, 1120 deletions

diff --git a/channels/chan_modem.c b/channels/chan_modem.c
deleted file mode 100644
index 86f6afa30..000000000
--- a/channels/chan_modem.c
+++ /dev/null
@@ -1,1120 +0,0 @@
-/*
- * 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 A/Open ITU-56/2 Voice Modem Driver (Rockwell, IS-101, and others)
- *
- * \author Mark Spencer <markster@digium.com>
- * 
- * \ingroup channel_drivers
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <string.h>
-#include <sys/time.h>
-#include <errno.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/termios.h>
-#include <sys/signal.h>
-
-#include "asterisk.h"
-
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
-
-#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/vmodem.h"
-#include "asterisk/utils.h"
-
-/* Up to 10 seconds for an echo to arrive */
-#define ECHO_TIMEOUT 10
-
-static const char desc[] = "Generic Voice Modem Driver";
-static const char tdesc[] = "Generic Voice Modem Channel Driver";
-static const char type[] = "Modem";
-static const char config[] = "modem.conf";
-static char dialtype = 'T';
-static int gmode = MODEM_MODE_IMMEDIATE;
-
-/* Default modem type */
-static char mtype[80] = "autodetect";
-/* Default context for incoming calls */
-static char context[AST_MAX_EXTENSION]= "default";
-
-/* Default language */
-static char language[MAX_LANGUAGE] = "";
-
-/* Initialization String */
-static char initstr[AST_MAX_INIT_STR] = "ATE0Q0";
-
-/* Default MSN */
-static char msn[AST_MAX_EXTENSION]="";
-
-/* Default Listen */
-static char incomingmsn[AST_MAX_EXTENSION]="";
-
-/* Default DTMF-detection mode (i4l/asterisk) */
-static int dtmfmode = MODEM_DTMF_AST;
-/* Default DTMF-generation mode (i4l (outband) / asterisk (inband) */
-static int dtmfmodegen = MODEM_DTMF_AST;
-
-struct ast_dsp *dsp = NULL;
-
-/* Default valid outgoing MSN */
-static char outgoingmsn[AST_MAX_EXTENSION]="";
-
-/* Default group */
-static ast_group_t cur_group = 0;
-
-static int usecnt =0;
-
-static int baudrate = 115200;
-
-static int stripmsd = 0;
-
-AST_MUTEX_DEFINE_STATIC(usecnt_lock);
-
-/* Protect the interface list (of ast_modem_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);
-
-/* 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);
-
-int dep_warning = 0;
-
-static struct ast_channel *modem_request(const char *type, int format, void *data, int *cause);
-static int modem_digit(struct ast_channel *ast, char digit);
-static int modem_call(struct ast_channel *ast, char *idest, int timeout);
-static int modem_hangup(struct ast_channel *ast);
-static int modem_answer(struct ast_channel *ast);
-static struct ast_frame *modem_read(struct ast_channel *);
-static int modem_write(struct ast_channel *ast, struct ast_frame *frame);
-static int modem_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
-
-static const struct ast_channel_tech modem_tech = {
-	.type = type,
-	.description = tdesc,
-	.capabilities = AST_FORMAT_SLINEAR,
-	.requester = modem_request,
-	.send_digit = modem_digit,
-	.call = modem_call,
-	.hangup = modem_hangup,
-	.answer = modem_answer,
-	.read = modem_read,
-	.write = modem_write,
-	.fixup = modem_fixup,
-};
-
-/* The private structures of the Phone Jack channels are linked for
-   selecting outgoing channels */
-   
-static struct ast_modem_pvt  *iflist = NULL;
-
-static int modem_digit(struct ast_channel *ast, char digit)
-{
-	struct ast_modem_pvt *p;
-	p = ast->tech_pvt;
-	if (p->mc->dialdigit)
-		return p->mc->dialdigit(p, digit);
-	ast_log(LOG_DEBUG, "Channel %s lacks digit dialing\n", ast->name);
-	return -1;
-}
-
-static struct ast_modem_driver *drivers = NULL;
-
-static struct ast_modem_driver *find_capability(char *ident)
-{
-	struct ast_modem_driver *mc;
-	int x;
-	mc = drivers;
-	while(mc) {
-		for (x=0;mc->idents[x];x++) {
-			if (!strcmp(ident, mc->idents[x])) 
-				break;
-		}
-		if (mc->idents[x])
-			break;
-		mc = mc->next;
-	}
-	if (mc) {
-		if (mc->incusecnt)
-			mc->incusecnt();
-	}
-	return mc;
-}
-
-static struct ast_modem_driver *find_driver(char *drv)
-{
-	struct ast_modem_driver *mc;
-	mc = drivers;
-	while(mc) {
-		if (!strcasecmp(mc->name, drv))	
-			break;
-		mc = mc->next;
-	}
-	if (mc) {
-		if (mc->incusecnt)
-			mc->incusecnt();
-	}
-	return mc;
-}
-
-int ast_register_modem_driver(struct ast_modem_driver *mc)
-{
-	mc->next = drivers;
-	drivers = mc;
-	return 0;
-}
-
-int ast_unregister_modem_driver(struct ast_modem_driver *mc)
-{
-	struct ast_modem_driver *last = NULL, *cur;
-	cur = drivers;
-	while(cur) {
-		if (cur == mc) {
-			if (last)
-				last->next = mc->next;
-			else
-				drivers = mc->next;
-			return 0;
-		}
-		cur = cur->next;
-	}
-	return -1;
-}
-
-static int modem_call(struct ast_channel *ast, char *idest, int timeout)
-{
-	struct ast_modem_pvt *p;
-	int ms = timeout;
-	char rdest[80], *where, dstr[100] = "";
-	char *stringp=NULL;
-	strncpy(rdest, idest, sizeof(rdest)-1);
-	stringp=rdest;
-	strsep(&stringp, ":");
-	where = strsep(&stringp, ":");
-	if (!where) {
-		ast_log(LOG_WARNING, "Destination %s requres a real destination (device:destination)\n", idest);
-		return -1;
-	}
-	p = ast->tech_pvt;
-	strncpy(dstr, where + p->stripmsd, sizeof(dstr) - 1);
-	/* if not a transfer or just sending tones, must be in correct state */
-	if (strcasecmp(rdest, "transfer") && strcasecmp(rdest,"sendtones")) {
-		if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
-			ast_log(LOG_WARNING, "modem_call called on %s, neither down nor reserved\n", ast->name);
-			return -1;
-		}
-	} 
-	if (!strcasecmp(rdest,"transfer")) /* if a transfer, put in transfer stuff */
-	{
-		snprintf(dstr, sizeof(dstr), "!,%s", where + p->stripmsd);
-	}
-	if (!strcasecmp(where, "handset")) {
-		if (p->mc->setdev)
-			if (p->mc->setdev(p, MODEM_DEV_HANDSET))
-				return -1;
-		/* Should be immediately up */
-		ast_setstate(ast, AST_STATE_UP);
-	} else {
-		if (p->mc->setdev)
-			if (p->mc->setdev(p, MODEM_DEV_TELCO_SPK))
-				return -1;
-		if (p->mc->dial)
-			p->mc->dial(p, dstr);
-		ast_setstate(ast, AST_STATE_DIALING);
-		while((ast->_state != AST_STATE_UP) && (ms > 0)) {
-			ms = ast_waitfor(ast, ms);
-			/* Just read packets and watch what happens */
-			if (ms > 0) {
-				if (!modem_read(ast))
-					return -1;
-			}
-		}
-		if (ms < 0)	
-			return -1;
-	}
-	return 0;
-}
-
-int ast_modem_send(struct ast_modem_pvt *p, char *cmd, int len)
-{
-	int i;
-	usleep(5000);
-	if (!len) {
-		for(i = 0; cmd[i];)
-		   {
-			if (fwrite(cmd + i,1,1,p->f) != 1)
-			   {
-				if (errno == EWOULDBLOCK) continue;
-				return -1;
-			   }
-			i++;
-		   }
-		tcdrain(fileno(p->f)); 
-		fprintf(p->f,"\r\n");
-		return 0;
-	} else {
-		if (fwrite(cmd, 1, len, p->f) < len)
-			return -1;
-		return 0;
-	}
-}
-
-int ast_modem_read_response(struct ast_modem_pvt *p, int timeout)
-{
-	int res = -1,c,i;
-	timeout *= 1000;
-	p->response[0] = 0;
-	c = i = 0;
-	do {
-		res = ast_waitfor_n_fd(&p->fd, 1, &timeout, NULL);
-		if (res < 0) {
-			strncpy(p->response, "(No Response)", sizeof(p->response)-1);
-			return -1;
-		}
-		  /* get no more then buffer length */
-		while(i < sizeof(p->response) - 1)
-		{
-			c = fgetc(p->f);  /* get a char */
-			if (c < 1) /* if error */
-			{
-				  /* if nothing in buffer, go back into timeout stuff */
-				if (errno == EWOULDBLOCK) break;
-				/* return as error */
-				strncpy(p->response, "(No Response)", sizeof(p->response)-1);
-				return -1;
-			}
-		 	  /* save char */
-			p->response[i++] = c;
-			p->response[i] = 0;			
-			  /* if end of input */
-			if (c == '\n') break;
-		}
-		if (c >= 0)  /* if input terminated normally */
-		{
-			  /* ignore just CR/LF */
-			if (!strcmp(p->response,"\r\n"))
-			{
-				  /* reset input buffer stuff */
-				i = 0; 
-				p->response[0] = 0;
-			}
-			else /* otherwise return with info in buffer */
-			{
-				return 0;
-			}
-		}
-	} while(timeout > 0);
-	strncpy(p->response, "(No Response)", sizeof(p->response)-1);
-	return -1;
-}
-
-int ast_modem_expect(struct ast_modem_pvt *p, char *result, int timeout)
-{
-	int res = -1;
-	timeout *= 1000;
-	strncpy(p->response, "(No Response)", sizeof(p->response)-1);
-	do {
-		res = ast_waitfor_n_fd(&p->fd, 1, &timeout, NULL);
-		if (res < 0) {
-			return -1;
-		}
-		/* Read a response */
-		fgets(p->response, sizeof(p->response), p->f);
-#if	0
-		fprintf(stderr, "Modem said: %s", p->response);
-#endif
-		if (!strncasecmp(p->response, result, strlen(result))) 
-			return 0;
-	} while(timeout > 0);
-	return -1;
-}
-
-void ast_modem_trim(char *s)
-{
-	int x;
-	x = strlen(s) - 1;
-	while(x >= 0) {
-		if ((s[x] != '\r') && (s[x] != '\n') && (s[x] != ' '))
-			break;
-		s[x] = '\0';
-		x--;
-	}
-}
-
-static int modem_setup(struct ast_modem_pvt *p, int baudrate)
-{
-
-	/* Make sure there's a modem there and that it's in a reasonable 
-	   mode.  Set the baud rate, etc.  */
-	char identity[256];
-	char *ident = NULL;
-	char etx[2] = { 0x10, '!' }; 
-	if (option_debug)
-		ast_log(LOG_DEBUG, "Setting up modem %s\n", p->dev);
-	if (ast_modem_send(p, etx, 2)) {
-		ast_log(LOG_WARNING, "Failed to send ETX?\n");
-		return -1;
-	}
-	if (ast_modem_send(p, "\r\n", 2)) {
-		ast_log(LOG_WARNING, "Failed to send enter?\n");
-		return -1;
-	}
-	usleep(10000);
-	/* Read any outstanding stuff */
-	while(!ast_modem_read_response(p, 0));
-	if (ast_modem_send(p, "ATZ", 0)) {
-		ast_log(LOG_WARNING, "Modem not responding on %s\n", p->dev);
-		return -1;
-	}
-	if (ast_modem_expect(p, "OK", ECHO_TIMEOUT)) {
-		ast_log(LOG_WARNING, "Modem reset failed: %s\n", p->response);
-		return -1;
-	}
-	if (ast_modem_send(p, p->initstr, 0)) {
-		ast_log(LOG_WARNING, "Modem not responding on %s\n", p->dev);
-		return -1;
-	}
-	if (ast_modem_expect(p, "OK", ECHO_TIMEOUT)) {
-		ast_log(LOG_WARNING, "Modem initialization failed: %s\n", p->response);
-		return -1;
-	}
-	if (ast_modem_send(p, "ATI3", 0)) {
-		ast_log(LOG_WARNING, "Modem not responding on %s\n", p->dev);
-		return -1;
-	}
-	if (ast_modem_read_response(p, ECHO_TIMEOUT)) {
-		ast_log(LOG_WARNING, "Modem did not provide identification\n");
-		return -1;
-	}
-	strncpy(identity, p->response, sizeof(identity)-1);
-	ast_modem_trim(identity);
-	if (ast_modem_expect(p, "OK", ECHO_TIMEOUT)) {
-		ast_log(LOG_WARNING, "Modem did not provide identification\n");
-		return -1;
-	}
-	if (!strcasecmp(mtype, "autodetect")) {
-		p->mc = find_capability(identity);
-		if (!p->mc) {
-			ast_log(LOG_WARNING, "Unable to autodetect modem.  You'll need to specify a driver in modem.conf.  Please report modem identification (%s) and which driver works to markster@linux-support.net.\n", identity); 
-			return -1;
-		}
-	} else {
-		p->mc = find_driver(mtype);
-		if (!p->mc) {
-			ast_log(LOG_WARNING, "No driver for modem type '%s'\n", mtype);
-			return -1;
-		}
-	}
-	if (p->mc->init) {
-		if (p->mc->init(p)) {
-			ast_log(LOG_WARNING, "Modem Initialization Failed on '%s', driver %s.\n", p->dev, p->mc->name);
-			p->mc->decusecnt();
-			return -1;
-		}
-	}			
-	if (option_verbose > 2) {
-		ast_verbose(VERBOSE_PREFIX_3 "Configured modem %s with driver %s (%s)\n", p->dev, p->mc->name, p->mc->identify ? (ident = p->mc->identify(p)) : "No identification");
-	}
-	if (ident)
-		free(ident);
-	return 0;
-}
-
-static int modem_hangup(struct ast_channel *ast)
-{
-	struct ast_modem_pvt *p;
-	if (option_debug)
-		ast_log(LOG_DEBUG, "modem_hangup(%s)\n", ast->name);
-	p = ast->tech_pvt;
-	/* Hang up */
-	if (p->mc->hangup)
-		p->mc->hangup(p);
-	/* Re-initialize */
-	if (p->mc->init)
-		p->mc->init(p);
-	ast_setstate(ast, AST_STATE_DOWN);
-	memset(p->cid_num, 0, sizeof(p->cid_num));
-	memset(p->cid_name, 0, sizeof(p->cid_name));
-	memset(p->dnid, 0, sizeof(p->dnid));
-	((struct ast_modem_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 modem_answer(struct ast_channel *ast)
-{
-	struct ast_modem_pvt *p;
-	int res=0;
-	if (option_debug)
-		ast_log(LOG_DEBUG, "modem_answer(%s)\n", ast->name);
-	p = ast->tech_pvt;
-	if (p->mc->answer) {
-		res = p->mc->answer(p);
-	}
-	if (!res) {
-		ast->rings = 0;
-		ast_setstate(ast, AST_STATE_UP);
-	}
-	return res;
-}
-
-#if	0
-static char modem_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 *modem_read(struct ast_channel *ast)
-{
-	struct ast_modem_pvt *p = ast->tech_pvt;
-	struct ast_frame *fr=NULL;
-	if (p->mc->read)
-		fr = p->mc->read(p);
-	return fr;
-}
-
-static int modem_write(struct ast_channel *ast, struct ast_frame *frame)
-{
-	int res=0;
-	long flags;
-	struct ast_modem_pvt *p = ast->tech_pvt;
-
-	/* Modems tend to get upset when they receive data whilst in
-	 * command mode. This makes esp. dial commands short lived.
-	 *     Pauline Middelink - 2002-09-24 */
-	if (ast->_state != AST_STATE_UP)
-		return 0;
-
-	/* Temporarily make non-blocking */
-	flags = fcntl(ast->fds[0], F_GETFL);
-	fcntl(ast->fds[0], F_SETFL, flags | O_NONBLOCK);
-
-	if (p->mc->write)
-		res = p->mc->write(p, frame);
-
-	/* Block again */
-	fcntl(ast->fds[0], F_SETFL, flags);
-	return res;
-}
-
-static int modem_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
-{
-        struct ast_modem_pvt *p = newchan->tech_pvt;
-ast_log(LOG_WARNING, "fixup called\n");
-	if (p->owner!=oldchan) {
-	    ast_log(LOG_WARNING, "old channel wasn't %p but was %p\n",oldchan,p->owner);
-	    return -1;
-	}
-	p->owner = newchan;
-        return 0; 
-}
-
-struct ast_channel *ast_modem_new(struct ast_modem_pvt *i, int state)
-{
-	struct ast_channel *tmp;
-	tmp = ast_channel_alloc(1);
-	if (tmp) {
-		tmp->tech = &modem_tech;
-		snprintf(tmp->name, sizeof(tmp->name), "Modem[%s]/%s", i->mc->name, i->dev + 5);
-		tmp->type = type;
-		tmp->fds[0] = i->fd;
-		tmp->nativeformats = i->mc->formats;
-		ast_setstate(tmp, state);
-		if (state == AST_STATE_RING)
-			tmp->rings = 1;
-		tmp->tech_pvt = i;
-		strncpy(tmp->context, i->context, sizeof(tmp->context)-1);
-
-		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);
-
-		if (!ast_strlen_zero(i->language))
-			strncpy(tmp->language,i->language, sizeof(tmp->language)-1);
-		if (!ast_strlen_zero(i->dnid))
-			strncpy(tmp->exten, i->dnid, sizeof(tmp->exten) - 1);
-		i->owner = tmp;
-		ast_mutex_lock(&usecnt_lock);
-		usecnt++;
-		ast_mutex_unlock(&usecnt_lock);
-		ast_update_use_count();
-		if (state != AST_STATE_DOWN) {
-			if (ast_pbx_start(tmp)) {
-				ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
-				ast_hangup(tmp);
-				tmp = NULL;
-			}
-		}
-	} else
-		ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
-	return tmp;
-}
-
-static void modem_mini_packet(struct ast_modem_pvt *i)
-{
-	struct ast_frame *fr;
-	fr = i->mc->read(i);
-	if (!fr) return;
-	if (fr->frametype == AST_FRAME_CONTROL) {
-		if (fr->subclass == AST_CONTROL_RING) {
-			ast_modem_new(i, AST_STATE_RING);
-		}
-	}
-}
-
-static void *do_monitor(void *data)
-{
-	fd_set rfds, efds;
-	int n, res;
-	struct ast_modem_pvt *i;
-	/* 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 0
-	if (pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL)) {
-		ast_log(LOG_WARNING, "Unable to set cancel type to asynchronous\n");
-		return NULL;
-	}
-#endif
-	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 (ast_mutex_lock(&monlock)) {
-			ast_log(LOG_ERROR, "Unable to grab monitor lock\n");
-			return NULL;
-		}
-		/* Lock the interface list */
-		if (ast_mutex_lock(&iflock)) {
-			ast_log(LOG_ERROR, "Unable to grab interface lock\n");
-			ast_mutex_unlock(&monlock);
-			return NULL;
-		}
-		/* Build the stuff we're going to select on, that is the socket of every
-		   ast_modem_pvt that does not have an associated owner channel */
-		n = -1;
-		FD_ZERO(&rfds);
-		FD_ZERO(&efds);
-		i = iflist;
-		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;
-			}
-			
-			i = i->next;
-		}
-		/* Okay, now that we know what to do, release the interface lock */
-		ast_mutex_unlock(&iflock);
-		
-		/* And from now on, we're okay to be killed, so release the monitor lock as well */
-		ast_mutex_unlock(&monlock);
-#if 0
-		ast_log(LOG_DEBUG, "In monitor, n=%d, pid=%d\n", n, getpid());
-#endif
-		/* Wait indefinitely for something to happen */
-		pthread_testcancel();
-		res = ast_select(n + 1, &rfds, NULL, &efds, NULL);
-		pthread_testcancel();
-		/* Okay, select has finished.  Let's see what happened.  */
-		if (res < 1) {
-			if ((errno != EINTR) && (errno != EAGAIN))
-				ast_log(LOG_WARNING, "select return %d: %s\n", res, strerror(errno));
-			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;
-		while(i) {
-			if (FD_ISSET(i->fd, &rfds) || 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);
-					i = i->next;
-					continue;
-				}
-				modem_mini_packet(i);
-			}
-			i=i->next;
-		}
-		ast_mutex_unlock(&iflock);
-	}
-	/* Never reached */
-	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) {
-		pthread_cancel(monitor_thread);
-		/* Nudge it a little, as it's probably stuck in select */
-		pthread_kill(monitor_thread, SIGURG);
-		pthread_join(monitor_thread, NULL);
-	}
-	/* 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 void stty(struct ast_modem_pvt *p)
-{
-	struct termios mode;
-	memset(&mode, 0, sizeof(mode));
-	if (tcgetattr(p->fd, &mode)) {
-		ast_log(LOG_WARNING, "Unable to get serial parameters on %s: %s\n", p->dev, strerror(errno));
-		return;
-	}
-#ifndef SOLARIS
-	cfmakeraw(&mode);
-#else
-        mode.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
-                        |INLCR|IGNCR|ICRNL|IXON);
-        mode.c_oflag &= ~OPOST;
-        mode.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
-        mode.c_cflag &= ~(CSIZE|PARENB);
-        mode.c_cflag |= CS8;
-#endif
-
-	cfsetispeed(&mode, B115200);
-	cfsetospeed(&mode, B115200);
-	if (tcsetattr(p->fd, TCSANOW, &mode)) 
-		ast_log(LOG_WARNING, "Unable to set serial parameters on %s: %s\n", p->dev, strerror(errno));
-	
-}
-
-static struct ast_modem_pvt *mkif(char *iface)
-{
-	/* Make a ast_modem_pvt structure for this interface */
-	struct ast_modem_pvt *tmp;
-#if 0
-	int flags;	
-#endif
-	
-	tmp = malloc(sizeof(struct ast_modem_pvt));
-	if (tmp) {
-		memset(tmp, 0, sizeof(struct ast_modem_pvt));
-		tmp->fd = open(iface, O_RDWR | O_NONBLOCK);
-		if (tmp->fd < 0) {
-			ast_log(LOG_WARNING, "Unable to open '%s'\n", iface);
-			free(tmp);
-			return NULL;
-		}
-		strncpy(tmp->language, language, sizeof(tmp->language)-1);
-		strncpy(tmp->msn, msn, sizeof(tmp->msn)-1);
-		strncpy(tmp->incomingmsn, incomingmsn, sizeof(tmp->incomingmsn)-1);
-		tmp->dtmfmode = dtmfmode;
-		tmp->dtmfmodegen = dtmfmodegen;
-		snprintf(tmp->outgoingmsn, sizeof(tmp->outgoingmsn), ",%s,", outgoingmsn);
-		strncpy(tmp->dev, iface, sizeof(tmp->dev)-1);
-		/* Maybe in the future we want to allow variable
-		   serial settings */
-		stty(tmp);
-		tmp->f = fdopen(tmp->fd, "w+");
-		/* Disable buffering */
-		setvbuf(tmp->f, NULL, _IONBF,0);
-		if (tmp->f < 0) {
-			ast_log(LOG_WARNING, "Unable to fdopen '%s'\n", iface);
-			free(tmp);
-			return NULL;
-		}
-		tmp->owner = NULL;
-		tmp->ministate = 0;
-		tmp->stripmsd = stripmsd;
-		tmp->dialtype = dialtype;
-		tmp->mode = gmode;
-		tmp->group = cur_group;
-		memset(tmp->cid_num, 0, sizeof(tmp->cid_num));
-		memset(tmp->cid_name, 0, sizeof(tmp->cid_name));
-		strncpy(tmp->context, context, sizeof(tmp->context)-1);
-		strncpy(tmp->initstr, initstr, sizeof(tmp->initstr)-1);
-		tmp->next = NULL;
-		tmp->obuflen = 0;
-		
-		if (modem_setup(tmp, baudrate) < 0) {
-			ast_log(LOG_WARNING, "Unable to configure modem '%s'\n", iface);
-			free(tmp);
-			return NULL;
-		}
-	}
-	return tmp;
-}
-
-static struct ast_channel *modem_request(const char *type, int format, void *data, int *cause)
-{
-	int oldformat;
-	struct ast_modem_pvt *p;
-	struct ast_channel *tmp = NULL;
-	char dev[80];
-	ast_group_t group = 0;
-	int groupint;
-	char *stringp=NULL;
-	strncpy(dev, (char *)data, sizeof(dev)-1);
-	stringp=dev;
-	strsep(&stringp, ":");
-	oldformat = format;
-
-	if (!dep_warning) {
-		ast_log(LOG_WARNING, "This channel driver is deprecated.  Please see the UPGRADE.txt file.\n");
-		dep_warning = 1;
-	}
-
-	if (dev[0]=='g' && isdigit(dev[1])) {
-		/* Retrieve the group number */
-		if (sscanf(dev+1, "%u", &groupint) < 1) {
-			ast_log(LOG_WARNING, "Unable to determine group from [%s]\n", (char *)data);
-			return NULL;
-		}
-		group = 1 << groupint;
-	}
-
-	/* 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 (group) {
-			/* if it belongs to the proper group, and the format matches
-			 * and it is not in use, we found a candidate! */
-			if (p->group & group &&
-			    p->mc->formats & format &&
-			    !p->owner) {
-				/* XXX Not quite sure that not having an owner is
-				 * sufficient evidence of beeing a free device XXX */
-				tmp = ast_modem_new(p, AST_STATE_DOWN);
-				restart_monitor();
-				break;
-			}
-		} else {
-			if (!strcmp(dev, p->dev + 5)) {
-				if (p->mc->formats & format) {
-					if (!p->owner) {
-						tmp = ast_modem_new(p, AST_STATE_DOWN);
-						restart_monitor();
-						break;
-					} else
-						ast_log(LOG_WARNING, "Device '%s' is busy\n", p->dev);
-				} else 
-					ast_log(LOG_WARNING, "Asked for a format %s line on %s\n", ast_getformatname(format), p->dev);
-				break;
-			}
-		}
-		p = p->next;
-	}
-	if (!p) 
-		ast_log(LOG_WARNING, "Requested device '%s' does not exist\n", dev);
-	
-	ast_mutex_unlock(&iflock);
-	return tmp;
-}
-
-static ast_group_t get_group(char *s)
-{
-	char *piece;
-	int start, finish,x;
-	ast_group_t group = 0;
-	char *copy = ast_strdupa(s);
-	char *stringp=NULL;
-	if (!copy) {
-		ast_log(LOG_ERROR, "Out of memory\n");
-		return 0;
-	}
-	stringp=copy;
-	piece = strsep(&stringp, ",");
-	while(piece) {
-		if (sscanf(piece, "%d-%d", &start, &finish) == 2) {
-			/* Range */
-		} else if (sscanf(piece, "%d", &start)) {
-			/* Just one */
-			finish = start;
-		} else {
-			ast_log(LOG_ERROR, "Syntax error parsing '%s' at '%s'.  Using '0'\n", s,piece);
-			return 0;
-		}
-		piece = strsep(&stringp, ",");
-
-		for (x=start;x<=finish;x++) {
-			if ((x > 63) || (x < 0)) {
-				ast_log(LOG_WARNING, "Ignoring invalid group %d\n", x);
-				break;
-			}
-			group |= (1 << x);
-		}
-	}
-	return group;
-}
-
-static int __unload_module(void)
-{
-	struct ast_modem_pvt *p, *pl;
-	/* First, take us out of the channel loop */
-	ast_channel_unregister(&modem_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_thread != AST_PTHREADT_STOP) {
-			pthread_cancel(monitor_thread);
-			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()
-{
-	return __unload_module();
-}
-
-int load_module()
-{
-	struct ast_config *cfg;
-	struct ast_variable *v;
-	struct ast_modem_pvt *tmp;
-	char driver[80];
-	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);
-				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, "driver")) {
-			snprintf(driver, sizeof(driver), "chan_modem_%s.so", v->value);
-			if (option_verbose > 1) 
-				ast_verbose(VERBOSE_PREFIX_2 "Loading modem driver %s", driver);
-				
-			if (ast_load_resource(driver)) {
-				ast_log(LOG_ERROR, "Failed to load driver %s\n", driver);
-				ast_config_destroy(cfg);
-				ast_mutex_unlock(&iflock);
-				__unload_module();
-				return -1;
-			}
-		} else if (!strcasecmp(v->name, "mode")) {
-			if (!strncasecmp(v->value, "ri", 2)) 
-				gmode = MODEM_MODE_WAIT_RING;
-			else if (!strncasecmp(v->value, "im", 2))
-				gmode = MODEM_MODE_IMMEDIATE;
-			else if (!strncasecmp(v->value, "an", 2))
-				gmode = MODEM_MODE_WAIT_ANSWER;
-			else
-				ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
-		} else if (!strcasecmp(v->name, "stripmsd")) {
-			stripmsd = atoi(v->value);
-		} else if (!strcasecmp(v->name, "type")) {
-			strncpy(mtype, v->value, sizeof(mtype)-1);
-		} else if (!strcasecmp(v->name, "initstr")) {
-			strncpy(initstr, v->value, sizeof(initstr)-1);
-		} else if (!strcasecmp(v->name, "dialtype")) {
-			dialtype = toupper(v->value[0]);
-		} else if (!strcasecmp(v->name, "context")) {
-			strncpy(context, v->value, sizeof(context)-1);
-		} else if (!strcasecmp(v->name, "msn")) {
-			strncpy(msn, v->value, sizeof(msn)-1);
-		} else if (!strcasecmp(v->name, "incomingmsn")) {
-			strncpy(incomingmsn, v->value, sizeof(incomingmsn)-1);
-		} else if (!strcasecmp(v->name, "dtmfmode")) {
-			char tmp[80];
-			char *alt;
-			strncpy(tmp, v->value, sizeof(tmp) - 1);
-			alt = strchr(tmp, '/');
-			if (!strcasecmp(tmp, "none"))
-				dtmfmode=MODEM_DTMF_NONE;
-			else if (!strcasecmp(tmp, "asterisk"))
-				dtmfmode = MODEM_DTMF_AST;
-			else if (!strcasecmp(tmp, "i4l"))
-				dtmfmode = MODEM_DTMF_I4L;
-			else {
-				ast_log(LOG_WARNING, "Unknown dtmf detection mode '%s', using 'asterisk'\n", v->value);
-				dtmfmode = MODEM_DTMF_AST;
-			}
-			if (alt) {
-				if (!strcasecmp(alt, "none"))
-					dtmfmodegen=MODEM_DTMF_NONE;
-				else if (!strcasecmp(alt, "asterisk"))
-					dtmfmodegen = MODEM_DTMF_AST;
-				else if (!strcasecmp(alt, "i4l"))
-					dtmfmodegen = MODEM_DTMF_I4L;
-				else if (!strcasecmp(alt, "both"))
-					dtmfmodegen = MODEM_DTMF_I4L | MODEM_DTMF_AST;
-				else {
-					ast_log(LOG_WARNING, "Unknown dtmf generation mode '%s', using 'asterisk'\n", v->value);
-					dtmfmodegen = MODEM_DTMF_AST;
-				}
-			} else
-				dtmfmodegen = dtmfmode;
-		} else if (!strcasecmp(v->name, "outgoingmsn")) {
-			strncpy(outgoingmsn, v->value, sizeof(outgoingmsn)-1);
-		} else if (!strcasecmp(v->name, "language")) {
-			strncpy(language, v->value, sizeof(language)-1);
-		} else if (!strcasecmp(v->name, "group")) {
-			cur_group = get_group(v->value);
-		}
-		v = v->next;
-	}
-	ast_mutex_unlock(&iflock);
-	if (ast_channel_register(&modem_tech)) {
-		ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
-		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(void)
-{
-	return usecnt;
-}
-
-char *description()
-{
-	return (char *) desc;
-}
-
-char *key()
-{
-	return ASTERISK_GPL_KEY;
-}
-