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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@394 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.0
Mark Spencer 24 years ago
parent 473cbda85c
commit 0051d20a04
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apps/app_qcall.c
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/** @file app_qcall.c
*
* Asterisk -- A telephony toolkit for Linux.
*
* Call back a party and connect them to a running pbx thread
*
* Copyright (C) 1999, Mark Spencer
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*
* Call a user from a file contained within a queue (/var/spool/asterisk/qcall)
*
* The queue is a directory containing files with the call request information
* as a single line of text as follows:
*
* Dialstring Caller-ID Extension Maxsecs Identifier [Required-response]
*
* Dialstring -- A Dial String (The number to be called) in the
* format Technology/Number, such IAX/mysys/1234 or Zap/g1/1234
*
* Caller-ID -- A Standard nomalized representation of the Caller-ID of
* the number being dialed (generally 10 digits in the US).
*
* Extension -- The Extension (optionally Extension@context) that the
* user should be "transferred" to after acceptance of the call.
*
* Maxsecs -- The Maximum time of the call in seconds. Specify 0 for infinite.
*
* Identifier -- The "Identifier" of the request. This is used to determine
* the names of the audio prompt files played. The first prompt, the one that
* asks for the input, is just the exact string specified as the identifier.
* The second prompt, the one that is played after the correct input is given,
* (generally a "thank you" recording), is the specified string with "-ok"
* added to the end. So, if you specify "foo" as the identifier, your first
* prompt file that will be played will be "foo" and the second one will be
* "foo-ok".
*
* Required-Response (Optional) -- Specify a digit string to be used as the
* acceptance "code" if you desire it to be something other then "1". This
* can be used to implement some sort of PIN or security system. It may be
* more then a single character.
*
* NOTE: It is important to remember that the process that creates these
* files needs keep and maintain a write lock (using flock with the LOCK_EX
* option) when writing these files.
*
*/
#include <asterisk/file.h>
#include <asterisk/logger.h>
#include <asterisk/channel.h>
#include <asterisk/pbx.h>
#include <asterisk/module.h>
#include <asterisk/translate.h>
#include <asterisk/options.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <dirent.h>
#include <ctype.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/file.h>
const char *qdir="/var/spool/asterisk/qcall";
static char *tdesc = "Call from Queue";
static pthread_t qcall_thread;
static int debug = 0;
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
#define OLDESTOK 14400 /* not any more then this number of secs old */
#define INITIALONE 20 /* initial wait before the first one in secs */
#define NEXTONE 600 /* wait before trying it again in secs */
#define MAXWAITFORANSWER 45000 /* max call time before answer */
/* define either one or both of these two if your application requires it */
#if 0
#define ACCTCODE "SOMETHING" /* Account code */
#define AMAFLAGS AST_CDR_BILLING /* AMA flags */
#endif
/* define this if you want to have a particular CLID display on the user's
phone when they receive the call */
#if 0
#define OURCLID "2564286275" /* The callerid to be displayed when calling */
#endif
static void *qcall_do(void *arg);
static void *qcall(void *ignore)
{
pthread_t dialer_thread;
DIR *dirp;
FILE *fp;
struct dirent *dp;
char fname[80];
struct stat mystat;
time_t t;
void *arg;
pthread_attr_t attr;
time(&t);
if (debug) printf("@@@@ qcall starting at %s",ctime(&t));
for(;;)
{
time(&t);
dirp = opendir(qdir);
if (!dirp)
{
perror("app_qcall:Cannot open queue directory");
break;
}
while((dp = readdir(dirp)) != NULL)
{
if (dp->d_name[0] == '.') continue;
sprintf(fname,"%s/%s",qdir,dp->d_name);
if (stat(fname,&mystat) == -1)
{
perror("app_qcall:stat");
fprintf(stderr,"%s\n",fname);
continue;
}
/* if not a regular file, skip it */
if ((mystat.st_mode & S_IFMT) != S_IFREG) continue;
/* if not yet .... */
if (mystat.st_atime == mystat.st_ctime)
{ /* first time */
if ((mystat.st_atime + INITIALONE) > t) continue;
}
else
{ /* already looked at once */
if ((mystat.st_atime + NEXTONE) > t) continue;
}
/* if too old */
if (mystat.st_mtime < (t - OLDESTOK))
{
/* kill it, its too old */
unlink(fname);
continue;
}
/* "touch" file's access time */
fp = fopen(fname,"r");
if (fp) fclose(fp);
/* make a copy of the filename string, so that we
may go on and use the buffer */
arg = (void *) strdup(fname);
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (pthread_create(&dialer_thread,&attr,qcall_do,arg) == -1)
{
perror("qcall: Cannot create thread");
continue;
}
}
closedir(dirp);
sleep(1);
}
pthread_exit(NULL);
}
/* single thread with one file (request) to dial */
static void *qcall_do(void *arg)
{
char fname[300],dialstr[300],extstr[300],ident[300],reqinp[300],buf[300];
char clid[300],*tele,*context;
FILE *fp;
int ms = MAXWAITFORANSWER,maxsecs;
struct ast_channel *channel;
time_t t;
/* get the filename from the arg */
strcpy(fname,(char *)arg);
free(arg);
time(&t);
fp = fopen(fname,"r");
if (!fp) /* if cannot open request file */
{
perror("qcall_do:fopen");
fprintf(stderr,"%s\n",fname);
unlink(fname);
pthread_exit(NULL);
}
/* lock the file */
if (flock(fileno(fp),LOCK_EX) == -1)
{
perror("qcall_do:flock");
fprintf(stderr,"%s\n",fname);
pthread_exit(NULL);
}
strcpy(reqinp,"1"); /* default required input for acknowledgement */
if (fscanf(fp,"%s %s %s %d %s %s",dialstr,clid,
extstr,&maxsecs,ident,reqinp) < 5)
{
fprintf(stderr,"qcall_do:file line invalid in file %s:\n",fname);
pthread_exit(NULL);
}
flock(fileno(fp),LOCK_UN);
fclose(fp);
tele = strchr(dialstr,'/');
if (!tele)
{
fprintf(stderr,"qcall_do:Dial number must be in format tech/number\n");
unlink(fname);
pthread_exit(NULL);
}
*tele++ = 0;
channel = ast_request(dialstr,AST_FORMAT_SLINEAR,tele);
if (channel)
{
ast_set_read_format(channel,AST_FORMAT_SLINEAR);
ast_set_write_format(channel,AST_FORMAT_SLINEAR);
channel->callerid = NULL;
channel->hidden_callerid = NULL;
#ifdef OURCLID
channel->callerid = strdup(OURCLID);
channel->hidden_callerid = strdup(OURCLID);
#endif
channel->whentohangup = 0;
channel->appl = "AppQcall";
channel->data = "(Outgoing Line)";
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Qcall initiating call to %s/%s on %s (%s)\n",
dialstr,tele,channel->name,fname);
ast_call(channel,tele,MAXWAITFORANSWER);
}
else
{
fprintf(stderr,"qcall_do:Sorry unable to obtain channel\n");
pthread_exit(NULL);
}
if (channel->callerid) free(channel->callerid);
channel->callerid = NULL;
if (channel->hidden_callerid) free(channel->hidden_callerid);
channel->hidden_callerid = NULL;
if (channel->state == AST_STATE_UP)
if (debug) printf("@@@@ Autodial:Line is Up\n");
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Qcall waiting for answer on %s\n",
channel->name);
while(ms > 0){
struct ast_frame *f;
ms = ast_waitfor(channel,ms);
f = ast_read(channel);
if (!f)
{
if (debug) printf("@@@@ qcall_do:Hung Up\n");
ast_frfree(f);
unlink(fname);
break;
}
if (f->frametype == AST_FRAME_CONTROL)
{
if (f->subclass == AST_CONTROL_HANGUP)
{
if (debug) printf("@@@@ qcall_do:Hung Up\n");
unlink(fname);
ast_frfree(f);
break;
}
if (f->subclass == AST_CONTROL_ANSWER)
{
if (debug) printf("@@@@ qcall_do:Phone Answered\n");
if (channel->state == AST_STATE_UP)
{
unlink(fname);
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Qcall got answer on %s\n",
channel->name);
usleep(1500000);
ast_streamfile(channel,ident,0);
if (ast_readstring(channel,buf,strlen(reqinp),10000,5000,"#"))
{
ast_stopstream(channel);
if (debug) printf("@@@@ qcall_do: timeout or hangup in dtmf read\n");
ast_frfree(f);
break;
}
ast_stopstream(channel);
if (strcmp(buf,reqinp)) /* if not match */
{
if (debug) printf("@@@@ qcall_do: response (%s) does not match required (%s)\n",buf,reqinp);
ast_frfree(f);
break;
}
ast_frfree(f);
/* okay, now we go for it */
context = strchr(extstr,'@');
if (!context) context = "default";
else *context++ = 0;
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_3 "Qcall got accept, now putting through to %s@%s on %s\n",
extstr,context,channel->name);
strcat(ident,"-ok");
/* if file existant, play it */
if (!ast_streamfile(channel,ident,0))
{
ast_waitstream(channel,"");
ast_stopstream(channel);
}
channel->callerid = strdup(clid);
channel->hidden_callerid = strdup(clid);
channel->language[0] = 0;
channel->dnid = strdup(extstr);
#ifdef AMAFLAGS
channel->amaflags = AMAFLAGS;
#endif
#ifdef ACCTCODE
strcpy(channel->accountcode,ACCTCODE);
#else
channel->accountcode[0] = 0;
#endif
if (maxsecs) /* if finite length call */
{
time(&channel->whentohangup);
channel->whentohangup += maxsecs;
}
strcpy(channel->exten,extstr);
strcpy(channel->context,context);
channel->priority = 1;
ast_pbx_run(channel);
pthread_exit(NULL);
}
}
else if(f->subclass==AST_CONTROL_RINGING)
if (debug) printf("@@@@ qcall_do:Phone Ringing end\n");
}
ast_frfree(f);
}
ast_hangup(channel);
if (debug) printf("@@@@ qcall_do:Hung up channel\n");
pthread_exit(NULL);
return NULL;
}
int unload_module(void)
{
STANDARD_HANGUP_LOCALUSERS;
return 0;
}
int load_module(void)
{
mkdir(qdir,0660);
pthread_create(&qcall_thread,NULL,qcall,NULL);
return 0;
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}
char *key()
{
return ASTERISK_GPL_KEY;
}
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