Sat Nov 1 06:28:55 2008

Asterisk developer's documentation

channels

chan_phone.c File Reference

Generic Linux Telephony Interface driver. More...

#include "asterisk.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <signal.h>
#include <linux/telephony.h>
#include <linux/version.h>
#include <linux/ixjuser.h>
#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 "asterisk/musiconhold.h"
#include "DialTone.h"

Include dependency graph for chan_phone.c:

Go to the source code of this file.

Data Structures

struct  phone_pvt

Defines

#define DEFAULT_CALLER_ID   "Unknown"
#define DEFAULT_GAIN   0x100
#define IXJ_PHONE_RING_START(x)   ioctl(p->fd, PHONE_RING_START, &x);
#define MODE_DIALTONE   1
#define MODE_FXO   3
#define MODE_FXS   4
#define MODE_IMMEDIATE   2
#define MODE_SIGMA   5
#define PHONE_MAX_BUF   480
#define QNDRV_VER   100

Functions

static int __unload_module (void)
 AST_MODULE_INFO_STANDARD (ASTERISK_GPL_KEY,"Linux Telephony API Support")
 AST_MUTEX_DEFINE_STATIC (monlock)
 AST_MUTEX_DEFINE_STATIC (iflock)
static void * do_monitor (void *data)
static int load_module (void)
static struct phone_pvt * mkif (char *iface, int mode, int txgain, int rxgain)
static int parse_gain_value (char *gain_type, char *value)
static int phone_answer (struct ast_channel *ast)
static int phone_call (struct ast_channel *ast, char *dest, int timeout)
static void phone_check_exception (struct phone_pvt *i)
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 struct ast_frame * phone_exception (struct ast_channel *ast)
static int phone_fixup (struct ast_channel *old, struct ast_channel *new)
static int phone_hangup (struct ast_channel *ast)
static int phone_indicate (struct ast_channel *chan, int condition, const void *data, size_t datalen)
static void phone_mini_packet (struct phone_pvt *i)
static struct ast_channel * phone_new (struct phone_pvt *i, int state, char *context)
static struct ast_frame * phone_read (struct ast_channel *ast)
static struct ast_channel * phone_request (const char *type, int format, void *data, int *cause)
static int phone_send_text (struct ast_channel *ast, const char *text)
static int phone_setup (struct ast_channel *ast)
static int phone_write (struct ast_channel *ast, struct ast_frame *frame)
static int phone_write_buf (struct phone_pvt *p, const char *buf, int len, int frlen, int swap)
static int restart_monitor (void)
static int unload_module (void)

Variables

static char cid_name [AST_MAX_EXTENSION]
static char cid_num [AST_MAX_EXTENSION]
static const char config [] = "phone.conf"
static char context [AST_MAX_EXTENSION] = "default"
static struct ast_channel_tech * cur_tech
static int echocancel = AEC_OFF
static struct phone_pvt * iflist
static char language [MAX_LANGUAGE] = ""
static unsigned int monitor
static pthread_t monitor_thread = AST_PTHREADT_NULL
static struct ast_channel_tech phone_tech
static struct ast_channel_tech phone_tech_fxs
static int prefformat = AST_FORMAT_G723_1 | AST_FORMAT_SLINEAR | AST_FORMAT_ULAW
static int silencesupression = 0
static const char tdesc [] = "Standard Linux Telephony API Driver"

Detailed Description

Generic Linux Telephony Interface driver.

Author:
Mark Spencer <markster@digium.com>

Definition in file chan_phone.c.

Define Documentation

#define DEFAULT_CALLER_ID   "Unknown"

Definition at line 87 of file chan_phone.c.

Referenced by phone_call().

#define DEFAULT_GAIN   0x100

Definition at line 89 of file chan_phone.c.

Referenced by load_module(), and parse_gain_value().

#define IXJ_PHONE_RING_START ( x   )     ioctl(p->fd, PHONE_RING_START, &x);

Definition at line 84 of file chan_phone.c.

Referenced by phone_call().

#define MODE_DIALTONE   1

Definition at line 125 of file chan_phone.c.

Referenced by load_module(), and phone_check_exception().

#define MODE_FXO   3

Definition at line 127 of file chan_phone.c.

Referenced by load_module(), mkif(), phone_answer(), phone_exception(), and phone_hangup().

#define MODE_FXS   4

Definition at line 128 of file chan_phone.c.

Referenced by load_module(), mkif(), phone_call(), phone_check_exception(), phone_new(), phone_read(), phone_request(), phone_setup(), and phone_write().

#define MODE_IMMEDIATE   2

Definition at line 126 of file chan_phone.c.

Referenced by load_module(), and phone_check_exception().

#define MODE_SIGMA   5

Definition at line 129 of file chan_phone.c.

Referenced by do_monitor(), load_module(), and phone_check_exception().

#define PHONE_MAX_BUF   480

Definition at line 88 of file chan_phone.c.

Referenced by phone_read().

#define QNDRV_VER   100

Definition at line 74 of file chan_phone.c.

Function Documentation

static int __unload_module ( void   )  [static]

Definition at line 1263 of file chan_phone.c.

References ast_channel_unregister(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), AST_PTHREADT_NULL, AST_PTHREADT_STOP, ast_softhangup(), AST_SOFTHANGUP_APPUNLOAD, cur_tech, phone_pvt::fd, free, iflist, LOG_WARNING, phone_pvt::next, and phone_pvt::owner.

01264 {
01265    struct phone_pvt *p, *pl;
01266    /* First, take us out of the channel loop */
01267    if (cur_tech)
01268       ast_channel_unregister(cur_tech);
01269    if (!ast_mutex_lock(&iflock)) {
01270       /* Hangup all interfaces if they have an owner */
01271       p = iflist;
01272       while(p) {
01273          if (p->owner)
01274             ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
01275          p = p->next;
01276       }
01277       iflist = NULL;
01278       ast_mutex_unlock(&iflock);
01279    } else {
01280       ast_log(LOG_WARNING, "Unable to lock the monitor\n");
01281       return -1;
01282    }
01283    if (!ast_mutex_lock(&monlock)) {
01284       if (monitor_thread > AST_PTHREADT_NULL) {
01285          monitor = 0;
01286          while (pthread_kill(monitor_thread, SIGURG) == 0)
01287             sched_yield();
01288          pthread_join(monitor_thread, NULL);
01289       }
01290       monitor_thread = AST_PTHREADT_STOP;
01291       ast_mutex_unlock(&monlock);
01292    } else {
01293       ast_log(LOG_WARNING, "Unable to lock the monitor\n");
01294       return -1;
01295    }
01296 
01297    if (!ast_mutex_lock(&iflock)) {
01298       /* Destroy all the interfaces and free their memory */
01299       p = iflist;
01300       while(p) {
01301          /* Close the socket, assuming it's real */
01302          if (p->fd > -1)
01303             close(p->fd);
01304          pl = p;
01305          p = p->next;
01306          /* Free associated memory */
01307          free(pl);
01308       }
01309       iflist = NULL;
01310       ast_mutex_unlock(&iflock);
01311    } else {
01312       ast_log(LOG_WARNING, "Unable to lock the monitor\n");
01313       return -1;
01314    }
01315       
01316    return 0;
01317 }

AST_MODULE_INFO_STANDARD ( ASTERISK_GPL_KEY  ,
"Linux Telephony API Support"   
)

AST_MUTEX_DEFINE_STATIC ( monlock   ) 

AST_MUTEX_DEFINE_STATIC ( iflock   ) 

static void* do_monitor ( void *  data  )  [static]

Definition at line 998 of file chan_phone.c.

References ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_select(), phone_pvt::dev, DialTone, phone_pvt::dialtone, errno, phone_pvt::fd, iflist, LOG_DEBUG, LOG_ERROR, LOG_WARNING, phone_pvt::mode, MODE_SIGMA, phone_pvt::next, phone_pvt::owner, phone_check_exception(), and phone_mini_packet().

00999 {
01000    fd_set rfds, efds;
01001    int n, res;
01002    struct phone_pvt *i;
01003    int tonepos = 0;
01004    /* The tone we're playing this round */
01005    struct timeval tv = {0,0};
01006    int dotone;
01007    /* This thread monitors all the frame relay interfaces which are not yet in use
01008       (and thus do not have a separate thread) indefinitely */
01009    while (monitor) {
01010       /* Don't let anybody kill us right away.  Nobody should lock the interface list
01011          and wait for the monitor list, but the other way around is okay. */
01012       /* Lock the interface list */
01013       if (ast_mutex_lock(&iflock)) {
01014          ast_log(LOG_ERROR, "Unable to grab interface lock\n");
01015          return NULL;
01016       }
01017       /* Build the stuff we're going to select on, that is the socket of every
01018          phone_pvt that does not have an associated owner channel */
01019       n = -1;
01020       FD_ZERO(&rfds);
01021       FD_ZERO(&efds);
01022       i = iflist;
01023       dotone = 0;
01024       while (i) {
01025          if (FD_ISSET(i->fd, &rfds)) 
01026             ast_log(LOG_WARNING, "Descriptor %d appears twice (%s)?\n", i->fd, i->dev);
01027          if (!i->owner) {
01028             /* This needs to be watched, as it lacks an owner */
01029             FD_SET(i->fd, &rfds);
01030             FD_SET(i->fd, &efds);
01031             if (i->fd > n)
01032                n = i->fd;
01033             if (i->dialtone && i->mode != MODE_SIGMA) {
01034                /* Remember we're going to have to come back and play
01035                   more dialtones */
01036                if (ast_tvzero(tv)) {
01037                   /* If we're due for a dialtone, play one */
01038                   if (write(i->fd, DialTone + tonepos, 240) != 240)
01039                      ast_log(LOG_WARNING, "Dial tone write error\n");
01040                }
01041                dotone++;
01042             }
01043          }
01044          
01045          i = i->next;
01046       }
01047       /* Okay, now that we know what to do, release the interface lock */
01048       ast_mutex_unlock(&iflock);
01049 
01050       /* Wait indefinitely for something to happen */
01051       if (dotone && i && i->mode != MODE_SIGMA) {
01052          /* If we're ready to recycle the time, set it to 30 ms */
01053          tonepos += 240;
01054          if (tonepos >= sizeof(DialTone))
01055                tonepos = 0;
01056          if (ast_tvzero(tv)) {
01057             tv = ast_tv(30000, 0);
01058          }
01059          res = ast_select(n + 1, &rfds, NULL, &efds, &tv);
01060       } else {
01061          res = ast_select(n + 1, &rfds, NULL, &efds, NULL);
01062          tv = ast_tv(0,0);
01063          tonepos = 0;
01064       }
01065       /* Okay, select has finished.  Let's see what happened.  */
01066       if (res < 0) {
01067          ast_log(LOG_DEBUG, "select return %d: %s\n", res, strerror(errno));
01068          continue;
01069       }
01070       /* If there are no fd's changed, just continue, it's probably time
01071          to play some more dialtones */
01072       if (!res)
01073          continue;
01074       /* Alright, lock the interface list again, and let's look and see what has
01075          happened */
01076       if (ast_mutex_lock(&iflock)) {
01077          ast_log(LOG_WARNING, "Unable to lock the interface list\n");
01078          continue;
01079       }
01080 
01081       i = iflist;
01082       for(; i; i=i->next) {
01083          if (FD_ISSET(i->fd, &rfds)) {
01084             if (i->owner) {
01085                continue;
01086             }
01087             phone_mini_packet(i);
01088          }
01089          if (FD_ISSET(i->fd, &efds)) {
01090             if (i->owner) {
01091                continue;
01092             }
01093             phone_check_exception(i);
01094          }
01095       }
01096       ast_mutex_unlock(&iflock);
01097    }
01098    return NULL;
01099    
01100 }

static int load_module ( void   )  [static]

Definition at line 1324 of file chan_phone.c.

References __unload_module(), ast_callerid_split(), ast_channel_register(), ast_config_destroy(), ast_config_load(), AST_FORMAT_G723_1, AST_FORMAT_SLINEAR, AST_FORMAT_ULAW, ast_log(), AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_SUCCESS, ast_mutex_lock(), ast_mutex_unlock(), ast_true(), ast_variable_browse(), ast_channel_tech::capabilities, cur_tech, DEFAULT_GAIN, iflist, LOG_ERROR, LOG_WARNING, mkif(), phone_pvt::mode, MODE_DIALTONE, MODE_FXO, MODE_FXS, MODE_IMMEDIATE, MODE_SIGMA, ast_variable::name, ast_variable::next, phone_pvt::next, parse_gain_value(), phone_tech, phone_tech_fxs, restart_monitor(), phone_pvt::rxgain, phone_pvt::txgain, and ast_variable::value.

01325 {
01326    struct ast_config *cfg;
01327    struct ast_variable *v;
01328    struct phone_pvt *tmp;
01329    int mode = MODE_IMMEDIATE;
01330    int txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN; /* default gain 1.0 */
01331    cfg = ast_config_load(config);
01332 
01333    /* We *must* have a config file otherwise stop immediately */
01334    if (!cfg) {
01335       ast_log(LOG_ERROR, "Unable to load config %s\n", config);
01336       return AST_MODULE_LOAD_DECLINE;
01337    }
01338    if (ast_mutex_lock(&iflock)) {
01339       /* It's a little silly to lock it, but we mind as well just to be sure */
01340       ast_log(LOG_ERROR, "Unable to lock interface list???\n");
01341       return AST_MODULE_LOAD_FAILURE;
01342    }
01343    v = ast_variable_browse(cfg, "interfaces");
01344    while(v) {
01345       /* Create the interface list */
01346       if (!strcasecmp(v->name, "device")) {
01347             tmp = mkif(v->value, mode, txgain, rxgain);
01348             if (tmp) {
01349                tmp->next = iflist;
01350                iflist = tmp;
01351                
01352             } else {
01353                ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
01354                ast_config_destroy(cfg);
01355                ast_mutex_unlock(&iflock);
01356                __unload_module();
01357                return AST_MODULE_LOAD_FAILURE;
01358             }
01359       } else if (!strcasecmp(v->name, "silencesupression")) {
01360          silencesupression = ast_true(v->value);
01361       } else if (!strcasecmp(v->name, "language")) {
01362          ast_copy_string(language, v->value, sizeof(language));
01363       } else if (!strcasecmp(v->name, "callerid")) {
01364          ast_callerid_split(v->value, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
01365       } else if (!strcasecmp(v->name, "mode")) {
01366          if (!strncasecmp(v->value, "di", 2)) 
01367             mode = MODE_DIALTONE;
01368          else if (!strncasecmp(v->value, "sig", 3))
01369             mode = MODE_SIGMA;
01370          else if (!strncasecmp(v->value, "im", 2))
01371             mode = MODE_IMMEDIATE;
01372          else if (!strncasecmp(v->value, "fxs", 3)) {
01373             mode = MODE_FXS;
01374             prefformat = 0x01ff0000; /* All non-voice */
01375          }
01376          else if (!strncasecmp(v->value, "fx", 2))
01377             mode = MODE_FXO;
01378          else
01379             ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
01380       } else if (!strcasecmp(v->name, "context")) {
01381          ast_copy_string(context, v->value, sizeof(context));
01382       } else if (!strcasecmp(v->name, "format")) {
01383          if (!strcasecmp(v->value, "g723.1")) {
01384             prefformat = AST_FORMAT_G723_1;
01385          } else if (!strcasecmp(v->value, "slinear")) {
01386             if (mode == MODE_FXS)
01387                 prefformat |= AST_FORMAT_SLINEAR;
01388             else prefformat = AST_FORMAT_SLINEAR;
01389          } else if (!strcasecmp(v->value, "ulaw")) {
01390             prefformat = AST_FORMAT_ULAW;
01391          } else
01392             ast_log(LOG_WARNING, "Unknown format '%s'\n", v->value);
01393       } else if (!strcasecmp(v->name, "echocancel")) {
01394          if (!strcasecmp(v->value, "off")) {
01395             echocancel = AEC_OFF;
01396          } else if (!strcasecmp(v->value, "low")) {
01397             echocancel = AEC_LOW;
01398          } else if (!strcasecmp(v->value, "medium")) {
01399             echocancel = AEC_MED;
01400          } else if (!strcasecmp(v->value, "high")) {
01401             echocancel = AEC_HIGH;
01402          } else 
01403             ast_log(LOG_WARNING, "Unknown echo cancellation '%s'\n", v->value);
01404       } else if (!strcasecmp(v->name, "txgain")) {
01405          txgain = parse_gain_value(v->name, v->value);
01406       } else if (!strcasecmp(v->name, "rxgain")) {
01407          rxgain = parse_gain_value(v->name, v->value);
01408       }  
01409       v = v->next;
01410    }
01411    ast_mutex_unlock(&iflock);
01412 
01413    if (mode == MODE_FXS) {
01414       phone_tech_fxs.capabilities = prefformat;
01415       cur_tech = &phone_tech_fxs;
01416    } else
01417       cur_tech = (struct ast_channel_tech *) &phone_tech;
01418 
01419    /* Make sure we can register our Adtranphone channel type */
01420 
01421    if (ast_channel_register(cur_tech)) {
01422       ast_log(LOG_ERROR, "Unable to register channel class 'Phone'\n");
01423       ast_config_destroy(cfg);
01424       __unload_module();
01425       return AST_MODULE_LOAD_FAILURE;
01426    }
01427    ast_config_destroy(cfg);
01428    /* And start the monitor for the first time */
01429    restart_monitor();
01430    return AST_MODULE_LOAD_SUCCESS;
01431 }

static struct phone_pvt* mkif ( char *  iface,
int  mode,
int  txgain,
int  rxgain 
) [static]

Definition at line 1139 of file chan_phone.c.

References ast_log(), phone_pvt::cid_name, phone_pvt::cid_num, phone_pvt::context, phone_pvt::cpt, phone_pvt::dev, phone_pvt::dialtone, errno, phone_pvt::ext, phone_pvt::fd, free, phone_pvt::language, phone_pvt::lastformat, phone_pvt::lastinput, LOG_DEBUG, LOG_WARNING, malloc, phone_pvt::ministate, phone_pvt::mode, MODE_FXO, MODE_FXS, phone_pvt::next, phone_pvt::obuflen, phone_pvt::owner, phone_pvt::rxgain, phone_pvt::silencesupression, and phone_pvt::txgain.

Referenced by load_module().

01140 {
01141    /* Make a phone_pvt structure for this interface */
01142    struct phone_pvt *tmp;
01143    int flags;  
01144    
01145    tmp = malloc(sizeof(struct phone_pvt));
01146    if (tmp) {
01147       tmp->fd = open(iface, O_RDWR);
01148       if (tmp->fd < 0) {
01149          ast_log(LOG_WARNING, "Unable to open '%s'\n", iface);
01150          free(tmp);
01151          return NULL;
01152       }
01153       if (mode == MODE_FXO) {
01154          if (ioctl(tmp->fd, IXJCTL_PORT, PORT_PSTN)) 
01155             ast_log(LOG_DEBUG, "Unable to set port to PSTN\n");
01156       } else {
01157          if (ioctl(tmp->fd, IXJCTL_PORT, PORT_POTS)) 
01158              if (mode != MODE_FXS)
01159                   ast_log(LOG_DEBUG, "Unable to set port to POTS\n");
01160       }
01161       ioctl(tmp->fd, PHONE_PLAY_STOP);
01162       ioctl(tmp->fd, PHONE_REC_STOP);
01163       ioctl(tmp->fd, PHONE_RING_STOP);
01164       ioctl(tmp->fd, PHONE_CPT_STOP);
01165       if (ioctl(tmp->fd, PHONE_PSTN_SET_STATE, PSTN_ON_HOOK)) 
01166          ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n",iface, strerror(errno));
01167       if (echocancel != AEC_OFF)
01168          ioctl(tmp->fd, IXJCTL_AEC_START, echocancel);
01169       if (silencesupression) 
01170          tmp->silencesupression = 1;
01171 #ifdef PHONE_VAD
01172       ioctl(tmp->fd, PHONE_VAD, tmp->silencesupression);
01173 #endif
01174       tmp->mode = mode;
01175       flags = fcntl(tmp->fd, F_GETFL);
01176       fcntl(tmp->fd, F_SETFL, flags | O_NONBLOCK);
01177       tmp->owner = NULL;
01178       tmp->lastformat = -1;
01179       tmp->lastinput = -1;
01180       tmp->ministate = 0;
01181       memset(tmp->ext, 0, sizeof(tmp->ext));
01182       ast_copy_string(tmp->language, language, sizeof(tmp->language));
01183       ast_copy_string(tmp->dev, iface, sizeof(tmp->dev));
01184       ast_copy_string(tmp->context, context, sizeof(tmp->context));
01185       tmp->next = NULL;
01186       tmp->obuflen = 0;
01187       tmp->dialtone = 0;
01188       tmp->cpt = 0;
01189       ast_copy_string(tmp->cid_num, cid_num, sizeof(tmp->cid_num));
01190       ast_copy_string(tmp->cid_name, cid_name, sizeof(tmp->cid_name));
01191       tmp->txgain = txgain;
01192       ioctl(tmp->fd, PHONE_PLAY_VOLUME, tmp->txgain);
01193       tmp->rxgain = rxgain;
01194       ioctl(tmp->fd, PHONE_REC_VOLUME, tmp->rxgain);
01195    }
01196    return tmp;
01197 }

static int parse_gain_value ( char *  gain_type,
char *  value 
) [static]

Definition at line 1241 of file chan_phone.c.

References ast_log(), DEFAULT_GAIN, and LOG_ERROR.

Referenced by load_module().

01242 {
01243    float gain;
01244 
01245    /* try to scan number */
01246    if (sscanf(value, "%f", &gain) != 1)
01247    {
01248       ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n",
01249          value, gain_type, config);
01250       return DEFAULT_GAIN;
01251    }
01252 
01253    /* multiplicate gain by 1.0 gain value */ 
01254    gain = gain * (float)DEFAULT_GAIN;
01255 
01256    /* percentage? */
01257    if (value[strlen(value) - 1] == '%')
01258       return (int)(gain / (float)100);
01259 
01260    return (int)gain;
01261 }

static int phone_answer ( struct ast_channel *  ast  )  [static]

Definition at line 458 of file chan_phone.c.

References ast_log(), ast_setstate(), AST_STATE_UP, errno, phone_pvt::fd, LOG_DEBUG, phone_pvt::mode, MODE_FXO, option_debug, phone_setup(), ast_channel::rings, and ast_channel::tech_pvt.

00459 {
00460    struct phone_pvt *p;
00461    p = ast->tech_pvt;
00462    /* In case it's a LineJack, take it off hook */
00463    if (p->mode == MODE_FXO) {
00464       if (ioctl(p->fd, PHONE_PSTN_SET_STATE, PSTN_OFF_HOOK)) 
00465          ast_log(LOG_DEBUG, "ioctl(PHONE_PSTN_SET_STATE) failed on %s (%s)\n", ast->name, strerror(errno));
00466       else
00467          ast_log(LOG_DEBUG, "Took linejack off hook\n");
00468    }
00469    phone_setup(ast);
00470    if (option_debug)
00471       ast_log(LOG_DEBUG, "phone_answer(%s)\n", ast->name);
00472    ast->rings = 0;
00473    ast_setstate(ast, AST_STATE_UP);
00474    return 0;
00475 }

static int phone_call ( struct ast_channel *  ast,
char *  dest,
int  timeout 
) [static]

Definition at line 294 of file chan_phone.c.

References ast_channel::_state, AST_CONTROL_RINGING, ast_localtime(), ast_log(), ast_queue_control(), ast_setstate(), AST_STATE_DOWN, AST_STATE_RESERVED, AST_STATE_RINGING, ast_strlen_zero(), ast_channel::cid, ast_callerid::cid_name, ast_callerid::cid_num, DEFAULT_CALLER_ID, ast_channel::fds, IXJ_PHONE_RING_START, LOG_DEBUG, LOG_WARNING, phone_pvt::mode, MODE_FXS, option_debug, phone_digit_end(), and ast_channel::tech_pvt.

00295 {
00296    struct phone_pvt *p;
00297 
00298    PHONE_CID cid;
00299    time_t UtcTime;
00300    struct tm tm;
00301    int start;
00302 
00303    time(&UtcTime);
00304    ast_localtime(&UtcTime, &tm, NULL);
00305 
00306    memset(&cid, 0, sizeof(PHONE_CID));
00307    if(&tm != NULL) {
00308       snprintf(cid.month, sizeof(cid.month), "%02d",(tm.tm_mon + 1));
00309       snprintf(cid.day, sizeof(cid.day),     "%02d", tm.tm_mday);
00310       snprintf(cid.hour, sizeof(cid.hour),   "%02d", tm.tm_hour);
00311       snprintf(cid.min, sizeof(cid.min),     "%02d", tm.tm_min);
00312    }
00313    /* the standard format of ast->callerid is:  "name" <number>, but not always complete */
00314    if (ast_strlen_zero(ast->cid.cid_name))
00315       strcpy(cid.name, DEFAULT_CALLER_ID);
00316    else
00317       ast_copy_string(cid.name, ast->cid.cid_name, sizeof(cid.name));
00318 
00319    if (ast->cid.cid_num) 
00320       ast_copy_string(cid.number, ast->cid.cid_num, sizeof(cid.number));
00321 
00322    p = ast->tech_pvt;
00323 
00324    if ((ast->_state != AST_STATE_DOWN) && (ast->_state != AST_STATE_RESERVED)) {
00325       ast_log(LOG_WARNING, "phone_call called on %s, neither down nor reserved\n", ast->name);
00326       return -1;
00327    }
00328    if (option_debug)
00329       ast_log(LOG_DEBUG, "Ringing %s on %s (%d)\n", dest, ast->name, ast->fds[0]);
00330 
00331    start = IXJ_PHONE_RING_START(cid);
00332    if (start == -1)
00333       return -1;
00334    
00335    if (p->mode == MODE_FXS) {
00336       char *digit = strchr(dest, '/');
00337       if (digit)
00338       {
00339         digit++;
00340         while (*digit)
00341           phone_digit_end(ast, *digit++, 0);
00342       }
00343    }
00344  
00345    ast_setstate(ast, AST_STATE_RINGING);
00346    ast_queue_control(ast, AST_CONTROL_RINGING);
00347    return 0;
00348 }

static void phone_check_exception ( struct phone_pvt *  i  )  [static]

Definition at line 904 of file chan_phone.c.

References ast_canmatch_extension(), ast_exists_extension(), ast_log(), AST_MAX_EXTENSION, ast_module_ref(), ast_module_unref(), AST_STATE_RING, ast_verbose(), phone_pvt::cid_num, phone_pvt::context, phone_pvt::cpt, phone_pvt::dialtone, phone_pvt::ext, phone_pvt::fd, phone_pvt::lastformat, LOG_DEBUG, phone_pvt::mode, MODE_DIALTONE, MODE_FXS, MODE_IMMEDIATE, MODE_SIGMA, option_debug, and phone_new().

Referenced by do_monitor().

00905 {
00906    int offhook=0;
00907    char digit[2] = {0 , 0};
00908    union telephony_exception phonee;
00909    /* XXX Do something XXX */
00910 #if 0
00911    ast_log(LOG_DEBUG, "Exception!\n");
00912 #endif
00913    phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION);
00914    if (phonee.bits.dtmf_ready)  {
00915       digit[0] = ioctl(i->fd, PHONE_GET_DTMF_ASCII);
00916       if (i->mode == MODE_DIALTONE || i->mode == MODE_FXS || i->mode == MODE_SIGMA) {
00917          ioctl(i->fd, PHONE_PLAY_STOP);
00918          ioctl(i->fd, PHONE_REC_STOP);
00919          ioctl(i->fd, PHONE_CPT_STOP);
00920          i->dialtone = 0;
00921          if (strlen(i->ext) < AST_MAX_EXTENSION - 1)
00922             strncat(i->ext, digit, sizeof(i->ext) - strlen(i->ext) - 1);
00923          if ((i->mode != MODE_FXS ||
00924               !(phonee.bytes = ioctl(i->fd, PHONE_EXCEPTION)) ||
00925               !phonee.bits.dtmf_ready) &&
00926              ast_exists_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
00927             /* It's a valid extension in its context, get moving! */
00928             phone_new(i, AST_STATE_RING, i->context);
00929             /* No need to restart monitor, we are the monitor */
00930          } else if (!ast_canmatch_extension(NULL, i->context, i->ext, 1, i->cid_num)) {
00931             /* There is nothing in the specified extension that can match anymore.
00932                Try the default */
00933             if (ast_exists_extension(NULL, "default", i->ext, 1, i->cid_num)) {
00934                /* Check the default, too... */
00935                phone_new(i, AST_STATE_RING, "default");
00936                /* XXX This should probably be justified better XXX */
00937             }  else if (!ast_canmatch_extension(NULL, "default", i->ext, 1, i->cid_num)) {
00938                /* It's not a valid extension, give a busy signal */
00939                if (option_debug)
00940                   ast_log(LOG_DEBUG, "%s can't match anything in %s or default\n", i->ext, i->context);
00941                ioctl(i->fd, PHONE_BUSY);
00942                i->cpt = 1;
00943             }
00944          }
00945 #if 0
00946          ast_verbose("Extension is %s\n", i->ext);
00947 #endif
00948       }
00949    }
00950    if (phonee.bits.hookstate) {
00951       offhook = ioctl(i->fd, PHONE_HOOKSTATE);
00952       if (offhook) {
00953          if (i->mode == MODE_IMMEDIATE) {
00954             phone_new(i, AST_STATE_RING, i->context);
00955          } else if (i->mode == MODE_DIALTONE) {
00956             ast_module_ref(ast_module_info->self);
00957             /* Reset the extension */
00958             i->ext[0] = '\0';
00959             /* Play the dialtone */
00960             i->dialtone++;
00961             ioctl(i->fd, PHONE_PLAY_STOP);
00962             ioctl(i->fd, PHONE_PLAY_CODEC, ULAW);
00963             ioctl(i->fd, PHONE_PLAY_START);
00964             i->lastformat = -1;
00965          } else if (i->mode == MODE_SIGMA) {
00966             ast_module_ref(ast_module_info->self);
00967             /* Reset the extension */
00968             i->ext[0] = '\0';
00969             /* Play the dialtone */
00970             i->dialtone++;
00971             ioctl(i->fd, PHONE_DIALTONE);
00972          }
00973       } else {
00974          if (i->dialtone)
00975             ast_module_unref(ast_module_info->self);
00976          memset(i->ext, 0, sizeof(i->ext));
00977          if (i->cpt)
00978          {
00979             ioctl(i->fd, PHONE_CPT_STOP);
00980             i->cpt = 0;
00981          }
00982          ioctl(i->fd, PHONE_PLAY_STOP);
00983          ioctl(i->fd, PHONE_REC_STOP);
00984          i->dialtone = 0;
00985          i->lastformat = -1;
00986       }
00987    }
00988    if (phonee.bits.pstn_ring) {
00989       ast_verbose("Unit is ringing\n");
00990       phone_new(i, AST_STATE_RING, i->context);
00991    }
00992    if (phonee.bits.caller_id)
00993       ast_verbose("We have caller ID\n");
00994    
00995    
00996 }

static int phone_digit_begin ( struct ast_channel *  ast,
char  digit 
) [static]

Definition at line 246 of file chan_phone.c.

00247 {
00248    /* XXX Modify this callback to let Asterisk support controlling the length of DTMF */
00249    return 0;
00250 }

static int phone_digit_end ( struct ast_channel *  ast,
char  digit,
unsigned int  duration 
) [static]

Definition at line 252 of file chan_phone.c.

References ast_log(), phone_pvt::fd, phone_pvt::lastformat, LOG_DEBUG, LOG_WARNING, and ast_channel::tech_pvt.

Referenced by phone_call().

00253 {
00254    str