Version 0.1.8 from FTP
[asterisk/asterisk.git] / apps / app_dial.c
index a8070e6..abfb2dd 100755 (executable)
@@ -18,6 +18,7 @@
 #include <asterisk/options.h>
 #include <asterisk/module.h>
 #include <asterisk/translate.h>
+#include <asterisk/say.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <sys/time.h>
+#include <sys/signal.h>
 
 #include <pthread.h>
 
-
-static char *tdesc = "Trivial Dialing Application";
+static char *tdesc = "Dialing/Parking Application";
 
 static char *app = "Dial";
 
+static char *parkedcall = "ParkedCall";
+
+/* No more than 90 seconds parked before you do something with them */
+static int parkingtime = 90000;
+
+/* Context for which parking is made accessible */
+static char parking_con[AST_MAX_EXTENSION] = "default";
+
+/* Extension you type to park the call */
+static char parking_ext[AST_MAX_EXTENSION] = "700";
+
+/* First available extension for parking */
+static int parking_start = 701;
+
+/* Last available extension for parking */
+static int parking_stop = 750;
+
 /* We define a customer "local user" structure because we
    use it not only for keeping track of what is in use but
    also for keeping track of who we're dialing. */
@@ -44,8 +62,166 @@ struct localuser {
        struct localuser *next;
 };
 
+struct parkeduser {
+       struct ast_channel *chan;
+       struct timeval start;
+       int parkingnum;
+       /* Where to go if our parking time expires */
+       char context[AST_MAX_EXTENSION];
+       char exten[AST_MAX_EXTENSION];
+       int priority;
+       struct parkeduser *next;
+};
+
+static struct parkeduser *parkinglot;
+
+static pthread_mutex_t parking_lock = PTHREAD_MUTEX_INITIALIZER;
+
+static pthread_t parking_thread;
+
 LOCAL_USER_DECL;
 
+static int bridge_call(struct ast_channel *chan, struct ast_channel *peer, int allowredirect);
+
+
+static int park_call(struct ast_channel *chan, struct ast_channel *peer)
+{
+       /* We put the user in the parking list, then wake up the parking thread to be sure it looks
+          after these channels too */
+       struct parkeduser *pu, *cur;
+       int x;
+       pu = malloc(sizeof(struct parkeduser));
+       if (pu) {
+               pthread_mutex_lock(&parking_lock);
+               for (x=parking_start;x<=parking_stop;x++) {
+                       cur = parkinglot;
+                       while(cur) {
+                               if (cur->parkingnum == x) 
+                                       break;
+                               cur = cur->next;
+                       }
+                       if (!cur)
+                               break;
+               }
+               if (x <= parking_stop) {
+                       pu->chan = chan;
+                       gettimeofday(&pu->start, NULL);
+                       pu->parkingnum = x;
+                       /* Remember what had been dialed, so that if the parking
+                          expires, we try to come back to the same place */
+                       strncpy(pu->context, chan->context, sizeof(pu->context));
+                       strncpy(pu->exten, chan->exten, sizeof(pu->exten));
+                       pu->priority = chan->priority;
+                       pu->next = parkinglot;
+                       parkinglot = pu;
+                       pthread_mutex_unlock(&parking_lock);
+                       /* Wake up the (presumably select()ing) thread */
+                       pthread_kill(parking_thread, SIGURG);
+                       if (option_verbose > 1) 
+                               ast_verbose(VERBOSE_PREFIX_2 "Parked %s on %d\n", pu->chan->name, pu->parkingnum);
+                       ast_say_digits(peer, pu->parkingnum, peer->language);
+                       return 0;
+               } else {
+                       ast_log(LOG_WARNING, "No more parking spaces\n");
+                       free(pu);
+                       pthread_mutex_unlock(&parking_lock);
+                       return -1;
+               }
+       } else {
+               ast_log(LOG_WARNING, "Out of memory\n");
+               return -1;
+       }
+       return 0;
+}
+
+static void *do_parking_thread(void *ignore)
+{
+       int ms, tms, max;
+       struct parkeduser *pu, *pl, *pt = NULL;
+       struct timeval tv;
+       struct ast_frame *f;
+       fd_set rfds, efds;
+       fd_set nrfds, nefds;
+       FD_ZERO(&rfds);
+       FD_ZERO(&efds);
+       for (;;) {
+               ms = -1;
+               max = -1;
+               pthread_mutex_lock(&parking_lock);
+               pl = NULL;
+               pu = parkinglot;
+               gettimeofday(&tv, NULL);
+               FD_ZERO(&nrfds);
+               FD_ZERO(&nefds);
+               while(pu) {
+                       tms = (tv.tv_sec - pu->start.tv_sec) * 1000 + (tv.tv_usec - pu->start.tv_usec) / 1000;
+                       if (tms > parkingtime) {
+                               /* They've been waiting too long, send them back to where they came.  Theoretically they
+                                  should have their original extensions and such, but we copy to be on the safe side */
+                               strncpy(pu->chan->exten, pu->exten, sizeof(pu->chan->exten));
+                               strncpy(pu->chan->context, pu->context, sizeof(pu->chan->context));
+                               pu->chan->priority = pu->priority;
+                               /* Start up the PBX, or hang them up */
+                               if (ast_pbx_start(pu->chan))  {
+                                       ast_log(LOG_WARNING, "Unable to restart the PBX for user on '%s', hanging them up...\n", pu->chan->name);
+                                       ast_hangup(pu->chan);
+                               }
+                               /* And take them out of the parking lot */
+                               if (pl) 
+                                       pl->next = pu->next;
+                               else
+                                       parkinglot = pu->next;
+                               pt = pu;
+                               pu = pu->next;
+                               free(pt);
+                       } else if (FD_ISSET(pu->chan->fd, &rfds) || FD_ISSET(pu->chan->fd, &efds)) {
+                               if (FD_ISSET(pu->chan->fd, &efds))
+                                       pu->chan->exception = 1;
+                               /* See if they need servicing */
+                               f = ast_read(pu->chan);
+                               if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass ==  AST_CONTROL_HANGUP))) {
+                                       /* There's a problem, hang them up*/
+                                       if (option_verbose > 1) 
+                                               ast_verbose(VERBOSE_PREFIX_2 "%s got tired of being parked\n", pu->chan->name);
+                                       ast_hangup(pu->chan);
+                                       /* And take them out of the parking lot */
+                                       if (pl) 
+                                               pl->next = pu->next;
+                                       else
+                                               parkinglot = pu->next;
+                                       pt = pu;
+                                       pu = pu->next;
+                                       free(pt);
+                               } else {
+                                       /* XXX Maybe we could do something with packets, like dial "0" for operator or something XXX */
+                                       ast_frfree(f);
+                                       goto std;       /* XXX Ick: jumping into an else statement??? XXX */
+                               }
+                       } else  {
+                               /* Keep this one for next one */
+std:                   FD_SET(pu->chan->fd, &nrfds);
+                               FD_SET(pu->chan->fd, &nefds);
+                               /* Keep track of our longest wait */
+                               if ((tms < ms) || (ms < 0))
+                                       ms = tms;
+                               if (pu->chan->fd > max)
+                                       max = pu->chan->fd;
+                               pl = pu;
+                               pu = pu->next;
+                       }
+               }
+               pthread_mutex_unlock(&parking_lock);
+               rfds = nrfds;
+               efds = nefds;
+               tv.tv_sec = ms / 1000;
+               tv.tv_usec = (ms % 1000) * 1000;
+               /* Wait for something to happen */
+               select(max + 1, &rfds, NULL, &efds, (ms > -1) ? &tv : NULL);
+               pthread_testcancel();
+       }
+       return NULL;    /* Never reached */
+}
+
 static void hanguptree(struct localuser *outgoing, struct ast_channel *exception)
 {
        /* Hang up a tree of stuff */
@@ -132,6 +308,8 @@ static struct ast_channel *wait_for_answer(struct ast_channel *in, struct localu
                        if (o->stillgoing) {
                                o->chan->blocking = 0;
                                if (FD_ISSET(o->chan->fd, &rfds) || FD_ISSET(o->chan->fd, &efds)) {
+                                       if (FD_ISSET(o->chan->fd, &efds))
+                                               o->chan->exception = 1;
                                        f = ast_read(o->chan);
                                        if (f) {
                                                if (f->frametype == AST_FRAME_CONTROL) {
@@ -173,6 +351,8 @@ static struct ast_channel *wait_for_answer(struct ast_channel *in, struct localu
                }
                if (FD_ISSET(in->fd, &rfds) || FD_ISSET(in->fd, &efds)) {
                        /* After unblocking the entirity of the list, check for the main channel */
+                       if (FD_ISSET(in->fd, &efds))
+                               in->exception = 1;
                        f = ast_read(in);
 #if 0
                        if (f && (f->frametype != AST_FRAME_VOICE))
@@ -196,8 +376,7 @@ static int bridge_call(struct ast_channel *chan, struct ast_channel *peer, int a
 {
        /* Copy voice back and forth between the two channels.  Give the peer
           the ability to transfer calls with '#<extension' syntax. */
-       struct ast_channel *cs[3];
-       int to = -1, len;
+       int len;
        struct ast_frame *f;
        struct ast_channel *who;
        char newext[256], *ptr;
@@ -208,88 +387,150 @@ static int bridge_call(struct ast_channel *chan, struct ast_channel *peer, int a
                        return -1;
        peer->appl = "Bridged Call";
        peer->data = chan->name;
-       cs[0] = chan;
-       cs[1] = peer;
-       for (/* ever */;;) {
-               who = ast_waitfor_n(cs, 2, &to);
-               if (!who) {
-                       ast_log(LOG_WARNING, "Nobody there??\n");
-                       continue;
-               }
-               f = ast_read(who);
-               if (!f || ((f->frametype == AST_FRAME_CONTROL) && 
-                                       ((f->subclass == AST_CONTROL_HANGUP) ||
-                                        (f->subclass == AST_CONTROL_BUSY)))) 
+       for (;;) {
+               res = ast_channel_bridge(chan, peer, AST_BRIDGE_DTMF_CHANNEL_1, &f, &who);
+               if (res < 0) {
+                       ast_log(LOG_WARNING, "Bridge failed on channels %s and %s\n", chan->name, peer->name);
                        return -1;
-               if ((f->frametype == AST_FRAME_VOICE) ||
-                   (f->frametype == AST_FRAME_DTMF)) {
-                       if ((f->frametype == AST_FRAME_DTMF) && (who == peer) && allowredirect) {
-                               if (f->subclass == '#') {
-                                       memset(newext, 0, sizeof(newext));
-                                       ptr = newext;
-                                       len = ast_pbx_longest_extension(chan->context) + 1;
-
+               }
+               
+               if (!f || ((f->frametype == AST_FRAME_CONTROL) && ((f->subclass == AST_CONTROL_HANGUP) || (f->subclass == AST_CONTROL_BUSY) || 
+                       (f->subclass == AST_CONTROL_CONGESTION)))) {
+                               res = -1;
+                               break;
+               }
+               if ((f->frametype == AST_FRAME_DTMF) && (who == peer) && allowredirect &&
+                    (f->subclass == '#')) {
+                               memset(newext, 0, sizeof(newext));
+                               ptr = newext;
+                               len = ast_pbx_longest_extension(chan->context) + 1;
+                               if (len < ast_pbx_longest_extension("default") + 1)
+                                       len = ast_pbx_longest_extension("default") + 1;
                                        /* Transfer */
-                                       if ((res=ast_streamfile(peer, "pbx-transfer")))
-                                               break;
-                                       if ((res=ast_waitstream(peer, AST_DIGIT_ANY)) < 0)
-                                               break;
-                                       ast_stopstream(peer);
-                                       if (res > 0) {
-                                               /* If they've typed a digit already, handle it */
-                                               newext[0] = res;
-                                               ptr++;
-                                               len --;
-                                       }
-                                       res = ast_readstring(peer, ptr, len, 3000, 2000, "#");
-                                       if (res)
-                                               break;
-                                       if (ast_exists_extension(chan, chan->context, newext, 1)) {
-                                               /* Set the channel's new extension, since it exists */
-                                               strncpy(chan->exten, newext, sizeof(chan->exten));
-                                               chan->priority = 0;
-                                               ast_frfree(f);
-                                               res=0;
+                               if ((res=ast_streamfile(peer, "pbx-transfer", chan->language)))
+                                       break;
+                               if ((res=ast_waitstream(peer, AST_DIGIT_ANY)) < 0)
+                                       break;
+                               ast_stopstream(peer);
+                               if (res > 0) {
+                                       /* If they've typed a digit already, handle it */
+                                       newext[0] = res;
+                                       ptr++;
+                                       len --;
+                               }
+                               res = ast_readstring(peer, ptr, len, 3000, 2000, "#");
+                               if (res)
+                                       break;
+                               if (!strcmp(newext, parking_ext)) {
+                                       if (!park_call(chan, peer)) {
+                                               /* We return non-zero, but tell the PBX not to hang the channel when
+                                                  the thread dies -- We have to be careful now though.  We are responsible for 
+                                                  hanging up the channel, else it will never be hung up! */
+                                               res=AST_PBX_KEEPALIVE;
                                                break;
+                                       } else {
+                                               ast_log(LOG_WARNING, "Unable to park call %s\n", chan->name);
                                        }
-                                       res = ast_streamfile(peer, "pbx-invalid");
-                                       if (res)
-                                               break;
-                                       res = ast_waitstream(peer, AST_DIGIT_ANY);
-                                       ast_stopstream(peer);
-                                       res = 0;
+                                       /* XXX Maybe we should have another message here instead of invalid extension XXX */
+                               } else if (ast_exists_extension(chan, peer->context, newext, 1)) {
+                                       /* Set the channel's new extension, since it exists, using peer context */
+                                       strncpy(chan->exten, newext, sizeof(chan->exten));
+                                       strncpy(chan->context, peer->context, sizeof(chan->context));
+                                       chan->priority = 0;
+                                       ast_frfree(f);
+                                       res=0;
+                                       break;
+                               } else if (ast_exists_extension(chan, "default", newext, 1)) {
+                                       /* Set the channel's new extension, since it exists, using peer context */
+                                       strncpy(chan->exten, newext, sizeof(chan->exten));
+                                       strncpy(chan->context, "default", sizeof(chan->context));
+                                       chan->priority = 0;
+                                       ast_frfree(f);
+                                       res=0;
+                                       break;
                                }
+                               res = ast_streamfile(peer, "pbx-invalid", chan->language);
+                               if (res)
+                                       break;
+                               res = ast_waitstream(peer, AST_DIGIT_ANY);
+                               ast_stopstream(peer);
+                               res = 0;
                        } else {
-#if 0
-                               ast_log(LOG_DEBUG, "Read from %s\n", who->name);
+#if 1
+                               ast_log(LOG_DEBUG, "Read from %s (%d,%d)\n", who->name, f->frametype, f->subclass);
 #endif
-                               if (who == chan) 
-                                       ast_write(peer, f);
-                               else 
-                                       ast_write(chan, f);
                        }
-                       ast_frfree(f);
-                       
-               } else
-                       ast_frfree(f);
-               /* Swap who gets priority */
-               cs[2] = cs[0];
-               cs[0] = cs[1];
-               cs[1] = cs[2];
        }
        return res;
 }
 
+static int park_exec(struct ast_channel *chan, void *data)
+{
+       int res=0;
+       struct localuser *u;
+       struct ast_channel *peer=NULL;
+       struct parkeduser *pu, *pl=NULL;
+       int park;
+       if (!data) {
+               ast_log(LOG_WARNING, "Park requires an argument (extension number)\n");
+               return -1;
+       }
+       LOCAL_USER_ADD(u);
+       park = atoi((char *)data);
+       pthread_mutex_lock(&parking_lock);
+       pu = parkinglot;
+       while(pu) {
+               if (pu->parkingnum == park) {
+                       if (pl)
+                               pl->next = pu->next;
+                       else
+                               parkinglot = pu->next;
+                       break;
+               }
+               pu = pu->next;
+       }
+       pthread_mutex_unlock(&parking_lock);
+       if (pu) {
+               peer = pu->chan;
+               free(pu);
+       }
+       if (peer) {
+               res = ast_channel_make_compatible(chan, peer);
+               if (res < 0) {
+                       ast_log(LOG_WARNING, "Could not make channels %s and %s compatible for bridge\n", chan->name, peer->name);
+                       ast_hangup(peer);
+                       return -1;
+               }
+               /* This runs sorta backwards, since we give the incoming channel control, as if it
+                  were the person called. */
+               if (option_verbose > 2) 
+                       ast_verbose(VERBOSE_PREFIX_3 "Channel %s connected to parked call %d\n", chan->name, park);
+               res = bridge_call(peer, chan, 1);
+               /* Simulate the PBX hanging up */
+               if (res != AST_PBX_KEEPALIVE)
+                       ast_hangup(peer);
+               return -1;
+       } else {
+               /* XXX Play a message XXX */
+               if (option_verbose > 2) 
+                       ast_verbose(VERBOSE_PREFIX_3 "Channel %s tried to talk to non-existant parked call %d\n", chan->name, park);
+               res = -1;
+       }
+       LOCAL_USER_REMOVE(u);
+       return res;
+}
+
 static int dial_exec(struct ast_channel *chan, void *data)
 {
        int res=-1;
        struct localuser *u;
        char *info, *peers, *timeout, *tech, *number, *rest, *cur;
        struct localuser *outgoing=NULL, *tmp;
-       struct ast_channel *peer, *npeer;
+       struct ast_channel *peer;
        int to;
        int allowredir=0;
        char numsubst[AST_MAX_EXTENSION];
+       char restofit[AST_MAX_EXTENSION];
        char *newnum;
        
        if (!data) {
@@ -301,25 +542,42 @@ static int dial_exec(struct ast_channel *chan, void *data)
        
        /* Parse our arguments XXX Check for failure XXX */
        info = malloc(strlen((char *)data) + AST_MAX_EXTENSION);
+       if (!info) {
+               ast_log(LOG_WARNING, "Out of memory\n");
+               return -1;
+       }
        strncpy(info, (char *)data, strlen((char *)data) + AST_MAX_EXTENSION);
-       peers = strtok(info, "|");
-       if (!peers) {
+       peers = info;
+       if (peers) {
+               timeout = strchr(info, '|');
+               if (timeout) {
+                       *timeout = '\0';
+                       timeout++;
+               }
+       } else
+               timeout = NULL;
+       if (!peers || !strlen(peers)) {
                ast_log(LOG_WARNING, "Dial argument takes format (technology1/number1&technology2/number2...|optional timeout)\n");
                goto out;
        }
-       timeout = strtok(NULL, "|");
-       rest = peers;
+       
+       cur = peers;
        do {
-               cur = strtok(rest, "&");
                /* Remember where to start next time */
-               rest = strtok(NULL, "\128");
+               rest = strchr(cur, '&');
+               if (rest) {
+                       *rest = 0;
+                       rest++;
+               }
                /* Get a technology/[device:]number pair */
-               tech = strtok(cur, "/");
-               number = strtok(NULL, "&");
+               tech = cur;
+               number = strchr(tech, '/');
                if (!number) {
                        ast_log(LOG_WARNING, "Dial argument takes format (technology1/[device:]number1&technology2/[device:]number2...|optional timeout)\n");
                        goto out;
                }
+               *number = '\0';
+               number++;
                tmp = malloc(sizeof(struct localuser));
                if (!tmp) {
                        ast_log(LOG_WARNING, "Out of memory\n");
@@ -329,22 +587,26 @@ static int dial_exec(struct ast_channel *chan, void *data)
                strncpy(numsubst, number, sizeof(numsubst));
                /* If we're dialing by extension, look at the extension to know what to dial */
                if ((newnum = strstr(numsubst, "BYEXTENSION"))) {
-                       snprintf(newnum, sizeof(numsubst) - (newnum - numsubst), "%s", chan->exten);
+                       strncpy(restofit, newnum + strlen("BYEXTENSION"), sizeof(restofit));
+                       snprintf(newnum, sizeof(numsubst) - (newnum - numsubst), "%s%s", chan->exten,restofit);
                        /* By default, if we're dialing by extension, don't permit redirecting */
                        tmp->allowredirect = 0;
                        if (option_debug)
                                ast_log(LOG_DEBUG, "Dialing by extension %s\n", numsubst);
                }
                /* Request the peer */
-               tmp->chan = ast_request(tech, chan->format, numsubst);
+               tmp->chan = ast_request(tech, chan->nativeformats, numsubst);
                if (!tmp->chan) {
                        /* If we can't, just go on to the next call */
                        ast_log(LOG_WARNING, "Unable to create channel of type '%s'\n", tech);
                        free(tmp);
+                       cur = rest;
                        continue;
                }
                tmp->chan->appl = "AppDial";
                tmp->chan->data = "(Outgoing Line)";
+               if (chan->callerid)
+                       tmp->chan->callerid = strdup(chan->callerid);
                /* Place the call, but don't wait on the answer */
                res = ast_call(tmp->chan, numsubst, 0);
                if (res) {
@@ -365,7 +627,9 @@ static int dial_exec(struct ast_channel *chan, void *data)
                tmp->stillgoing = -1;
                tmp->next = outgoing;
                outgoing = tmp;
-       } while(rest);
+               cur = rest;
+       } while(cur);
+       
        if (timeout)
                to = atoi(timeout) * 1000;
        else
@@ -387,14 +651,14 @@ static int dial_exec(struct ast_channel *chan, void *data)
                   conversation.  */
                hanguptree(outgoing, peer);
                outgoing = NULL;
-               /* Build a translator if necessary */
-               if (peer->format & chan->format) 
-                       npeer = peer;
-               else
-                       npeer = ast_translator_create(peer, chan->format, AST_DIRECTION_BOTH);
-               res = bridge_call(chan, npeer, allowredir);
-               if (npeer != peer)
-                       ast_translator_destroy(npeer);
+               /* Make sure channels are compatible */
+               res = ast_channel_make_compatible(chan, peer);
+               if (res < 0) {
+                       ast_log(LOG_WARNING, "Had to drop call because I couldn't make %s compatible with %s\n", chan->name, peer->name);
+                       ast_hangup(peer);
+                       return -1;
+               }
+               res = bridge_call(chan, peer, allowredir);
                ast_hangup(peer);
        }       
 out:
@@ -412,7 +676,24 @@ int unload_module(void)
 
 int load_module(void)
 {
-       return ast_register_application(app, dial_exec);
+       int res;
+       int x;
+       struct ast_context *con;
+       char exten[AST_MAX_EXTENSION];
+       con = ast_context_find(parking_con);
+       if (!con) {
+               ast_log(LOG_ERROR, "Parking context '%s' does not exist\n", parking_con);
+               return -1;
+       }
+       for(x=parking_start; x<=parking_stop;x++) {
+               snprintf(exten, sizeof(exten), "%d", x);
+               ast_add_extension2(con, 1, exten, 1, parkedcall, strdup(exten), free);
+       }
+       pthread_create(&parking_thread, NULL, do_parking_thread, NULL);
+       res = ast_register_application(parkedcall, park_exec);
+       if (!res)
+               res = ast_register_application(app, dial_exec);
+       return res;
 }
 
 char *description(void)
@@ -426,3 +707,8 @@ int usecount(void)
        STANDARD_USECOUNT(res);
        return res;
 }
+
+char *key()
+{
+       return ASTERISK_GPL_KEY;
+}