git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1142 65c4cc65-6c06-0410-ace0-fbb531ad65f3
625 lines
16 KiB
C
Executable file
625 lines
16 KiB
C
Executable file
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Meet me conference bridge
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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#include <asterisk/lock.h>
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#include <asterisk/file.h>
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#include <asterisk/logger.h>
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#include <asterisk/channel.h>
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#include <asterisk/pbx.h>
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#include <asterisk/module.h>
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#include <asterisk/config.h>
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#include <asterisk/app.h>
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#include <asterisk/options.h>
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#include <asterisk/cli.h>
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#include <asterisk/say.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <pthread.h>
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#include <linux/zaptel.h>
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static char *tdesc = "Simple MeetMe conference bridge";
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static char *app = "MeetMe";
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static char *app2 = "MeetMeCount";
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static char *synopsis = "Simple MeetMe conference bridge";
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static char *synopsis2 = "MeetMe participant count";
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static char *descrip =
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" MeetMe(confno[|options]): Enters the user into a specified MeetMe conference.\n"
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"If the conference number is omitted, the user will be prompted to enter\n"
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"one. This application always returns -1. A ZAPTEL INTERFACE MUST BE\n"
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"INSTALLED FOR CONFERENCING FUNCTIONALITY.\n"
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"The option string may contain zero or more of the following characters:\n"
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" 'a' -- set admin mode\n"
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" 'm' -- set monitor only mode\n"
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" 'p' -- allow user to exit the conference by pressing '#'\n"
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" 's' -- send user to admin/user menu if '*' is received\n"
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" 't' -- set talk only mode\n"
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" 'v' -- video mode\n"
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" 'q' -- quiet mode (don't play enter/leave sounds)\n";
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static char *descrip2 =
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" MeetMeCount(confno): Plays back the number of users in the specified MeetMe\n"
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"conference. Returns 0 on success or -1 on a hangup. A ZAPTEL INTERFACE\n"
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"MUST BE INSTALLED FOR CONFERENCING FUNCTIONALITY.\n";
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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static struct conf {
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char confno[80]; /* Conference */
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int fd; /* Announcements fd */
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int zapconf; /* Zaptel Conf # */
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int users; /* Number of active users */
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time_t start; /* Start time (s) */
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struct conf *next;
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} *confs;
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static pthread_mutex_t conflock = AST_MUTEX_INITIALIZER;
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#include "enter.h"
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#include "leave.h"
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#define ENTER 0
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#define LEAVE 1
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#define CONF_SIZE 160
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#define CONFFLAG_ADMIN (1 << 1) /* If set the user has admin access on the conference */
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#define CONFFLAG_MONITOR (1 << 2) /* If set the user can only receive audio from the conference */
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#define CONFFLAG_POUNDEXIT (1 << 3) /* If set asterisk will exit conference when '#' is pressed */
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#define CONFFLAG_STARMENU (1 << 4) /* If set asterisk will provide a menu to the user what '*' is pressed */
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#define CONFFLAG_TALKER (1 << 5) /* If set the use can only send audio to the conference */
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#define CONFFLAG_QUIET (1 << 6) /* If set there will be no enter or leave sounds */
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#define CONFFLAG_VIDEO (1 << 7) /* Set to enable video mode */
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static int careful_write(int fd, unsigned char *data, int len)
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{
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int res;
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while(len) {
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res = write(fd, data, len);
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if (res < 1) {
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if (errno != EAGAIN) {
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ast_log(LOG_WARNING, "Failed to write audio data to conference: %s\n", strerror(errno));
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return -1;
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} else
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return 0;
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}
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len -= res;
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data += res;
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}
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return 0;
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}
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static void conf_play(struct conf *conf, int sound)
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{
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unsigned char *data;
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int len;
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ast_pthread_mutex_lock(&conflock);
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switch(sound) {
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case ENTER:
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data = enter;
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len = sizeof(enter);
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break;
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case LEAVE:
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data = leave;
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len = sizeof(leave);
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break;
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default:
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data = NULL;
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len = 0;
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}
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if (data)
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careful_write(conf->fd, data, len);
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pthread_mutex_unlock(&conflock);
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}
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static struct conf *build_conf(char *confno, int make)
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{
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struct conf *cnf;
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struct zt_confinfo ztc;
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ast_pthread_mutex_lock(&conflock);
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cnf = confs;
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while(cnf) {
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if (!strcmp(confno, cnf->confno))
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break;
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cnf = cnf->next;
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}
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if (!cnf && make) {
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cnf = malloc(sizeof(struct conf));
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if (cnf) {
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/* Make a new one */
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memset(cnf, 0, sizeof(struct conf));
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strncpy(cnf->confno, confno, sizeof(cnf->confno) - 1);
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cnf->fd = open("/dev/zap/pseudo", O_RDWR);
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if (cnf->fd < 0) {
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ast_log(LOG_WARNING, "Unable to open pseudo channel\n");
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free(cnf);
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cnf = NULL;
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goto cnfout;
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}
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memset(&ztc, 0, sizeof(ztc));
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/* Setup a new zap conference */
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ztc.chan = 0;
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ztc.confno = -1;
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ztc.confmode = ZT_CONF_CONF | ZT_CONF_TALKER | ZT_CONF_LISTENER;
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if (ioctl(cnf->fd, ZT_SETCONF, &ztc)) {
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ast_log(LOG_WARNING, "Error setting conference\n");
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close(cnf->fd);
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free(cnf);
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cnf = NULL;
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goto cnfout;
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}
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cnf->start = time(NULL);
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cnf->zapconf = ztc.confno;
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if (option_verbose > 2)
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ast_verbose(VERBOSE_PREFIX_3 "Created ZapTel conference %d for conference '%s'\n", cnf->zapconf, cnf->confno);
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cnf->next = confs;
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confs = cnf;
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} else
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ast_log(LOG_WARNING, "Out of memory\n");
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}
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cnfout:
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if (cnf && make)
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cnf->users++;
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ast_pthread_mutex_unlock(&conflock);
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return cnf;
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}
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static int confs_show(int fd, int argc, char **argv)
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{
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struct conf *conf;
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int hr, min, sec;
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time_t now;
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now = time(NULL);
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if (argc != 2)
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return RESULT_SHOWUSAGE;
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conf = confs;
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if (!conf) {
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ast_cli(fd, "No active conferences.\n");
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return RESULT_SUCCESS;
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}
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ast_cli(fd, "Conf Num Parties Activity\n");
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while(conf) {
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hr = (now - conf->start) / 3600;
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min = ((now - conf->start) % 3600) / 60;
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sec = (now - conf->start) % 60;
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ast_cli(fd, "%-12.12s %4.4d %02d:%02d:%02d\n",
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conf->confno, conf->users, hr, min, sec);
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conf = conf->next;
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}
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return RESULT_SUCCESS;
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}
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static char show_confs_usage[] =
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"Usage: show conferences\n"
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" Provides summary information on conferences with active\n"
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" participation.\n";
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static struct ast_cli_entry cli_show_confs = {
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{ "show", "conferences", NULL }, confs_show,
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"Show status of conferences", show_confs_usage, NULL };
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static int conf_run(struct ast_channel *chan, struct conf *conf, int confflags)
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{
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struct conf *prev=NULL, *cur;
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int fd;
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struct zt_confinfo ztc;
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struct ast_frame *f;
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struct ast_channel *c;
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struct ast_frame fr;
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int outfd;
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int ms;
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int nfds;
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int res;
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int flags;
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int retryzap;
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int origfd;
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int firstpass = 0;
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int ret = -1;
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int x;
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ZT_BUFFERINFO bi;
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char __buf[CONF_SIZE + AST_FRIENDLY_OFFSET];
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char *buf = __buf + AST_FRIENDLY_OFFSET;
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if (!(confflags & CONFFLAG_QUIET) && conf->users == 1) {
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if (!ast_streamfile(chan, "conf-onlyperson", chan->language))
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ast_waitstream(chan, "");
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}
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if (confflags & CONFFLAG_VIDEO) {
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/* Set it into linear mode (write) */
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if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) {
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ast_log(LOG_WARNING, "Unable to set '%s' to write linear mode\n", chan->name);
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goto outrun;
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}
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/* Set it into linear mode (read) */
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if (ast_set_read_format(chan, AST_FORMAT_SLINEAR) < 0) {
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ast_log(LOG_WARNING, "Unable to set '%s' to read linear mode\n", chan->name);
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goto outrun;
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}
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} else {
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/* Set it into U-law mode (write) */
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if (ast_set_write_format(chan, AST_FORMAT_ULAW) < 0) {
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ast_log(LOG_WARNING, "Unable to set '%s' to write ulaw mode\n", chan->name);
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goto outrun;
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}
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/* Set it into U-law mode (read) */
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if (ast_set_read_format(chan, AST_FORMAT_ULAW) < 0) {
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ast_log(LOG_WARNING, "Unable to set '%s' to read ulaw mode\n", chan->name);
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goto outrun;
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}
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}
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ast_indicate(chan, -1);
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retryzap = strcasecmp(chan->type, "Zap");
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zapretry:
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origfd = chan->fds[0];
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if (retryzap) {
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fd = open("/dev/zap/pseudo", O_RDWR);
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if (fd < 0) {
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ast_log(LOG_WARNING, "Unable to open pseudo channel: %s\n", strerror(errno));
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goto outrun;
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}
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/* Make non-blocking */
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flags = fcntl(fd, F_GETFL);
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if (flags < 0) {
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ast_log(LOG_WARNING, "Unable to get flags: %s\n", strerror(errno));
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close(fd);
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goto outrun;
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}
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if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) {
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ast_log(LOG_WARNING, "Unable to set flags: %s\n", strerror(errno));
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close(fd);
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goto outrun;
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}
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/* Setup buffering information */
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memset(&bi, 0, sizeof(bi));
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bi.bufsize = CONF_SIZE;
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bi.txbufpolicy = ZT_POLICY_IMMEDIATE;
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bi.rxbufpolicy = ZT_POLICY_IMMEDIATE;
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bi.numbufs = 4;
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if (ioctl(fd, ZT_SET_BUFINFO, &bi)) {
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ast_log(LOG_WARNING, "Unable to set buffering information: %s\n", strerror(errno));
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close(fd);
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goto outrun;
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}
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if (confflags & CONFFLAG_VIDEO) {
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x = 1;
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if (ioctl(fd, ZT_SETLINEAR, &x)) {
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ast_log(LOG_WARNING, "Unable to set linear mode: %s\n", strerror(errno));
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close(fd);
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goto outrun;
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}
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}
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nfds = 1;
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} else {
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/* XXX Make sure we're not running on a pseudo channel XXX */
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fd = chan->fds[0];
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nfds = 0;
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}
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memset(&ztc, 0, sizeof(ztc));
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/* Check to see if we're in a conference... */
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ztc.chan = 0;
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if (ioctl(fd, ZT_GETCONF, &ztc)) {
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ast_log(LOG_WARNING, "Error getting conference\n");
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close(fd);
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goto outrun;
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}
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if (ztc.confmode) {
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/* Whoa, already in a conference... Retry... */
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if (!retryzap) {
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ast_log(LOG_DEBUG, "Zap channel is in a conference already, retrying with pseudo\n");
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retryzap = 1;
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goto zapretry;
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}
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}
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memset(&ztc, 0, sizeof(ztc));
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/* Add us to the conference */
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ztc.chan = 0;
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ztc.confno = conf->zapconf;
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if (confflags & CONFFLAG_MONITOR)
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ztc.confmode = ZT_CONF_CONFMON | ZT_CONF_LISTENER;
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else if (confflags & CONFFLAG_TALKER)
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ztc.confmode = ZT_CONF_CONF | ZT_CONF_TALKER;
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else
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ztc.confmode = ZT_CONF_CONF | ZT_CONF_TALKER | ZT_CONF_LISTENER;
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if (ioctl(fd, ZT_SETCONF, &ztc)) {
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ast_log(LOG_WARNING, "Error setting conference\n");
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close(fd);
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goto outrun;
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}
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ast_log(LOG_DEBUG, "Placed channel %s in ZAP conf %d\n", chan->name, conf->zapconf);
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if (!firstpass && !(confflags & CONFFLAG_MONITOR) && !(confflags & CONFFLAG_ADMIN)) {
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firstpass = 1;
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if (!(confflags & CONFFLAG_QUIET))
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conf_play(conf, ENTER);
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}
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for(;;) {
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outfd = -1;
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ms = -1;
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c = ast_waitfor_nandfds(&chan, 1, &fd, nfds, NULL, &outfd, &ms);
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if (c) {
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if (c->fds[0] != origfd) {
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if (retryzap) {
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/* Kill old pseudo */
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close(fd);
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}
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ast_log(LOG_DEBUG, "Ooh, something swapped out under us, starting over\n");
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retryzap = 0;
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goto zapretry;
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}
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f = ast_read(c);
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if (!f)
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break;
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if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '#') && (confflags & CONFFLAG_POUNDEXIT)) {
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ret = 0;
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break;
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} else if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '*') && (confflags & CONFFLAG_STARMENU)) {
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if ((confflags & CONFFLAG_ADMIN)) {
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/* Do admin stuff here */
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} else {
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/* Do user menu here */
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}
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} else if (fd != chan->fds[0]) {
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if (f->frametype == AST_FRAME_VOICE) {
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if (f->subclass == AST_FORMAT_ULAW) {
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/* Carefully write */
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careful_write(fd, f->data, f->datalen);
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} else
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ast_log(LOG_WARNING, "Huh? Got a non-ulaw (%d) frame in the conference\n", f->subclass);
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}
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}
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ast_frfree(f);
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} else if (outfd > -1) {
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res = read(outfd, buf, CONF_SIZE);
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if (res > 0) {
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memset(&fr, 0, sizeof(fr));
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fr.frametype = AST_FRAME_VOICE;
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fr.subclass = AST_FORMAT_ULAW;
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fr.datalen = res;
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fr.samples = res;
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fr.data = buf;
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fr.offset = AST_FRIENDLY_OFFSET;
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if (ast_write(chan, &fr) < 0) {
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ast_log(LOG_WARNING, "Unable to write frame to channel: %s\n", strerror(errno));
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/* break; */
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}
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} else
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ast_log(LOG_WARNING, "Failed to read frame: %s\n", strerror(errno));
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}
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}
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if (fd != chan->fds[0])
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close(fd);
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else {
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/* Take out of conference */
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/* Add us to the conference */
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ztc.chan = 0;
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ztc.confno = 0;
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ztc.confmode = 0;
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if (ioctl(fd, ZT_SETCONF, &ztc)) {
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ast_log(LOG_WARNING, "Error setting conference\n");
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}
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}
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if (!(confflags & CONFFLAG_QUIET) && !(confflags & CONFFLAG_MONITOR) && !(confflags & CONFFLAG_ADMIN))
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conf_play(conf, LEAVE);
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outrun:
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ast_pthread_mutex_lock(&conflock);
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/* Clean up */
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conf->users--;
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if (!conf->users) {
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/* No more users -- close this one out */
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cur = confs;
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while(cur) {
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if (cur == conf) {
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if (prev)
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prev->next = conf->next;
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else
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confs = conf->next;
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break;
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}
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prev = cur;
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cur = cur->next;
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}
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if (!cur)
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ast_log(LOG_WARNING, "Conference not found\n");
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close(conf->fd);
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free(conf);
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}
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pthread_mutex_unlock(&conflock);
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return ret;
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}
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static struct conf *find_conf(char *confno, int make)
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{
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struct ast_config *cfg;
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struct ast_variable *var;
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struct conf *cnf = NULL;
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cfg = ast_load("meetme.conf");
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if (!cfg) {
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ast_log(LOG_WARNING, "No meetme.conf file :(\n");
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return NULL;
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}
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var = ast_variable_browse(cfg, "rooms");
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while(var) {
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if (!strcasecmp(var->name, "conf") &&
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!strcasecmp(var->value, confno)) {
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/* Bingo it's a valid conference */
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cnf = build_conf(confno, make);
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break;
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}
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var = var->next;
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}
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if (!var) {
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ast_log(LOG_DEBUG, "%s isn't a valid conference\n", confno);
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}
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ast_destroy(cfg);
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return cnf;
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}
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static int count_exec(struct ast_channel *chan, void *data)
|
|
{
|
|
struct localuser *u;
|
|
int res = 0;
|
|
struct conf *conf;
|
|
int cnt;
|
|
if (!data || !strlen(data)) {
|
|
ast_log(LOG_WARNING, "MeetMeCount requires an argument (conference number)\n");
|
|
return -1;
|
|
}
|
|
LOCAL_USER_ADD(u);
|
|
conf = find_conf(data, 0);
|
|
if (conf)
|
|
cnt = conf->users;
|
|
else
|
|
cnt = 0;
|
|
if (chan->_state != AST_STATE_UP)
|
|
ast_answer(chan);
|
|
res = ast_say_number(chan, cnt, "", chan->language);
|
|
LOCAL_USER_REMOVE(u);
|
|
return res;
|
|
}
|
|
|
|
static int conf_exec(struct ast_channel *chan, void *data)
|
|
{
|
|
int res=-1;
|
|
struct localuser *u;
|
|
char confno[80] = "";
|
|
int allowretry = 0;
|
|
int retrycnt = 0;
|
|
struct conf *cnf;
|
|
int confflags = 0;
|
|
char info[256], *ptr, *inflags, *inpin;
|
|
|
|
if (!data || !strlen(data)) {
|
|
allowretry = 1;
|
|
data = "";
|
|
}
|
|
LOCAL_USER_ADD(u);
|
|
if (chan->_state != AST_STATE_UP)
|
|
ast_answer(chan);
|
|
|
|
strncpy(info, (char *)data, sizeof(info) - 1);
|
|
ptr = info;
|
|
|
|
if (info) {
|
|
inflags = strchr(info, '|');
|
|
if (inflags) {
|
|
*inflags = '\0';
|
|
inflags++;
|
|
if (strchr(inflags, 'a'))
|
|
confflags |= CONFFLAG_ADMIN;
|
|
if (strchr(inflags, 'm'))
|
|
confflags |= CONFFLAG_MONITOR;
|
|
if (strchr(inflags, 'p'))
|
|
confflags |= CONFFLAG_POUNDEXIT;
|
|
if (strchr(inflags, 's'))
|
|
confflags |= CONFFLAG_STARMENU;
|
|
if (strchr(inflags, 't'))
|
|
confflags |= CONFFLAG_TALKER;
|
|
if (strchr(inflags, 'q'))
|
|
confflags |= CONFFLAG_QUIET;
|
|
|
|
inpin = strchr(inflags, '|');
|
|
if (inpin) {
|
|
*inpin = '\0';
|
|
inpin++;
|
|
/* XXX Need to do something with pin XXX */
|
|
ast_log(LOG_WARNING, "MEETME WITH PIN=(%s)\n", inpin);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Parse out the stuff */
|
|
strncpy(confno, info, sizeof(confno) - 1);
|
|
retry:
|
|
while(!strlen(confno) && (++retrycnt < 4)) {
|
|
/* Prompt user for conference number */
|
|
res = ast_app_getdata(chan, "conf-getconfno",confno, sizeof(confno) - 1, 0);
|
|
if (res <0) goto out;
|
|
}
|
|
if (strlen(confno)) {
|
|
/* Check the validity of the conference */
|
|
cnf = find_conf(confno, 1);
|
|
if (!cnf) {
|
|
res = ast_streamfile(chan, "conf-invalid", chan->language);
|
|
if (res < 0)
|
|
goto out;
|
|
if (!res)
|
|
res = ast_waitstream(chan, "");
|
|
res = -1;
|
|
if (allowretry) {
|
|
strcpy(confno, "");
|
|
goto retry;
|
|
}
|
|
} else {
|
|
/* XXX Should prompt user for pin if pin is required XXX */
|
|
/* Run the conference */
|
|
res = conf_run(chan, cnf, confflags);
|
|
}
|
|
}
|
|
out:
|
|
/* Do the conference */
|
|
LOCAL_USER_REMOVE(u);
|
|
return res;
|
|
}
|
|
|
|
int unload_module(void)
|
|
{
|
|
STANDARD_HANGUP_LOCALUSERS;
|
|
ast_cli_unregister(&cli_show_confs);
|
|
ast_unregister_application(app2);
|
|
return ast_unregister_application(app);
|
|
}
|
|
|
|
int load_module(void)
|
|
{
|
|
ast_cli_register(&cli_show_confs);
|
|
ast_register_application(app2, count_exec, synopsis2, descrip2);
|
|
return ast_register_application(app, conf_exec, synopsis, descrip);
|
|
}
|
|
|
|
char *description(void)
|
|
{
|
|
return tdesc;
|
|
}
|
|
|
|
int usecount(void)
|
|
{
|
|
int res;
|
|
STANDARD_USECOUNT(res);
|
|
return res;
|
|
}
|
|
|
|
char *key()
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|