mirror of https://github.com/asterisk/asterisk
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@512 65c4cc65-6c06-0410-ace0-fbb531ad65f31.0
Mark Spencer
23 years ago
parent
b4050e5159
commit
105b71e710
@ -0,0 +1,611 @@
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/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Implementation of Session Initiation Protocol
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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 <stdio.h>
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#include <pthread.h>
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#include <string.h>
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#include <asterisk/lock.h>
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#include <asterisk/channel.h>
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#include <asterisk/channel_pvt.h>
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#include <asterisk/config.h>
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#include <asterisk/logger.h>
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#include <asterisk/module.h>
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#include <asterisk/pbx.h>
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#include <asterisk/options.h>
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#include <asterisk/lock.h>
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#include <asterisk/sched.h>
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#include <asterisk/io.h>
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#include <asterisk/rtp.h>
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#include <asterisk/acl.h>
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#include <asterisk/callerid.h>
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#include <asterisk/file.h>
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#include <asterisk/cli.h>
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#include <asterisk/app.h>
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#include <asterisk/musiconhold.h>
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#include <asterisk/manager.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <arpa/inet.h>
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#include <sys/signal.h>
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static char *desc = "Agent Proxy Channel";
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static char *type = "Agent";
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static char *tdesc = "Call Agent Proxy Channel";
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static char *config = "agents.conf";
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static char *app = "AgentLogin";
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static char *synopsis = "Call agent login";
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static char *descrip =
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" AgentLogin():\n"
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"Asks the agent to login to the system. Always returns -1. While\n"
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"logged in, the agent can receive calls and will hear a 'beep'\n"
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"when a new call comes in. The agent can dump the call by pressing\n"
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"the star key.\n";
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static char moh[80] = "default";
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#define AST_MAX_AGENT 80 /* Agent ID or Password max length */
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static int capability = -1;
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static int usecnt =0;
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static pthread_mutex_t usecnt_lock = AST_MUTEX_INITIALIZER;
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/* Protect the interface list (of sip_pvt's) */
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static pthread_mutex_t agentlock = AST_MUTEX_INITIALIZER;
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static struct agent_pvt {
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pthread_mutex_t lock; /* Channel private lock */
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int dead; /* Poised for destruction? */
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char moh[80]; /* Which music on hold */
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char agent[AST_MAX_AGENT]; /* Agent ID */
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char password[AST_MAX_AGENT]; /* Password for Agent login */
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char name[AST_MAX_AGENT];
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struct ast_channel *owner; /* Agent */
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struct ast_channel *chan; /* Channel we use */
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struct agent_pvt *next; /* Agent */
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} *agents = NULL;
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#define CLEANUP(ast, p) do { \
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int x; \
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if (p->chan) { \
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for (x=0;x<AST_MAX_FDS;x++) \
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ast->fds[x] = p->chan->fds[x]; \
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} \
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} while(0)
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static int add_agent(struct ast_variable *var)
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{
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char tmp[256];
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char *password=NULL, *name=NULL;
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struct agent_pvt *p;
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strncpy(tmp, var->value, sizeof(tmp));
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if ((password = strchr(tmp, ','))) {
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*password = '\0';
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password++;
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while (*password < 33) password++;
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}
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if (password && (name = strchr(password, ','))) {
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*name = '\0';
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name++;
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while (*name < 33) name++;
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}
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p = agents;
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while(p) {
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if (!strcmp(p->agent, tmp))
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break;
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p = p->next;
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}
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if (!p) {
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p = malloc(sizeof(struct agent_pvt));
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if (p) {
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memset(p, 0, sizeof(struct agent_pvt));
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strncpy(p->agent, tmp, sizeof(p->agent) -1);
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p->next = agents;
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agents = p;
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}
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}
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if (!p)
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return -1;
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strncpy(p->password, password ? password : "", sizeof(p->password) - 1);
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strncpy(p->name, name ? name : "", sizeof(p->name) - 1);
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strncpy(p->moh, moh, sizeof(p->moh) - 1);
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p->dead = 0;
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return 0;
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}
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static int agent_answer(struct ast_channel *ast)
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{
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ast_log(LOG_WARNING, "Huh? Agent is being asked to answer?\n");
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return -1;
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}
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static struct ast_frame *agent_read(struct ast_channel *ast)
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{
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struct agent_pvt *p = ast->pvt->pvt;
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struct ast_frame *f = NULL;
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ast_pthread_mutex_lock(&p->lock);
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if (p->chan)
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f = ast_read(p->chan);
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if (!f) {
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/* If there's a channel, make it NULL */
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if (p->chan)
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p->chan = NULL;
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}
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if (f && (f->frametype == AST_FRAME_DTMF) && (f->subclass == '*')) {
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/* * terminates call */
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ast_frfree(f);
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f = NULL;
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}
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CLEANUP(ast,p);
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ast_pthread_mutex_unlock(&p->lock);
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return f;
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}
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static int agent_write(struct ast_channel *ast, struct ast_frame *f)
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{
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struct agent_pvt *p = ast->pvt->pvt;
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int res = -1;
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ast_pthread_mutex_lock(&p->lock);
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if (p->chan)
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res = ast_write(p->chan, f);
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CLEANUP(ast, p);
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ast_pthread_mutex_unlock(&p->lock);
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return res;
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}
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static int agent_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
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{
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struct agent_pvt *p = newchan->pvt->pvt;
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ast_pthread_mutex_lock(&p->lock);
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if (p->owner != oldchan) {
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ast_log(LOG_WARNING, "old channel wasn't %p but was %p\n", oldchan, p->owner);
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return -1;
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}
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p->owner = newchan;
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ast_pthread_mutex_unlock(&p->lock);
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return 0;
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}
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static int agent_indicate(struct ast_channel *ast, int condition)
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{
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struct agent_pvt *p = ast->pvt->pvt;
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int res = -1;
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ast_pthread_mutex_lock(&p->lock);
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if (p->chan)
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res = ast_indicate(p->chan, condition);
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ast_pthread_mutex_unlock(&p->lock);
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return res;
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}
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static int agent_digit(struct ast_channel *ast, char digit)
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{
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struct agent_pvt *p = ast->pvt->pvt;
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int res = -1;
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ast_pthread_mutex_lock(&p->lock);
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if (p->chan)
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res = p->chan->pvt->send_digit(p->chan, digit);
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ast_pthread_mutex_unlock(&p->lock);
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return res;
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}
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static int agent_call(struct ast_channel *ast, char *dest, int timeout)
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{
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struct agent_pvt *p = ast->pvt->pvt;
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int res = -1;
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ast_pthread_mutex_lock(&p->lock);
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res = ast_streamfile(p->chan, "beep", p->chan->language);
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if (!res)
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res = ast_waitstream(p->chan, "");
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if (!res) {
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res = ast_set_read_format(p->chan, ast_best_codec(p->chan->nativeformats));
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if (res)
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ast_log(LOG_WARNING, "Unable to set read format to %d\n", ast_best_codec(p->chan->nativeformats));
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}
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if (!res) {
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ast_set_write_format(p->chan, ast_best_codec(p->chan->nativeformats));
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if (res)
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ast_log(LOG_WARNING, "Unable to set write format to %d\n", ast_best_codec(p->chan->nativeformats));
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}
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/* Call is immediately up */
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ast_setstate(ast, AST_STATE_UP);
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ast_pthread_mutex_unlock(&p->lock);
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return res;
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}
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static int agent_hangup(struct ast_channel *ast)
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{
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struct agent_pvt *p = ast->pvt->pvt;
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ast_pthread_mutex_lock(&p->lock);
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p->owner = NULL;
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ast->pvt->pvt = NULL;
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ast_pthread_mutex_unlock(&p->lock);
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if (p->chan) {
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/* If they're dead, go ahead and hang up on the agent now */
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if (p->dead)
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ast_softhangup(p->chan, AST_SOFTHANGUP_EXPLICIT);
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ast_moh_start(p->chan, p->moh);
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} else if (p->dead)
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/* Go ahead and lose it */
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free(p);
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return 0;
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}
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static struct ast_channel *agent_new(struct agent_pvt *p, int state)
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{
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struct ast_channel *tmp;
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if (!p->chan) {
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ast_log(LOG_WARNING, "No channel? :(\n");
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return NULL;
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}
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tmp = ast_channel_alloc(0);
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if (tmp) {
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tmp->nativeformats = p->chan->nativeformats;
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snprintf(tmp->name, sizeof(tmp->name), "Agent/%s", p->agent);
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tmp->type = type;
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ast_setstate(tmp, state);
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tmp->writeformat = p->chan->writeformat;
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tmp->pvt->rawwriteformat = p->chan->writeformat;
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tmp->readformat = p->chan->readformat;
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tmp->pvt->rawreadformat = p->chan->readformat;
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tmp->pvt->pvt = p;
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tmp->pvt->send_digit = agent_digit;
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tmp->pvt->call = agent_call;
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tmp->pvt->hangup = agent_hangup;
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tmp->pvt->answer = agent_answer;
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tmp->pvt->read = agent_read;
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tmp->pvt->write = agent_write;
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tmp->pvt->exception = agent_read;
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tmp->pvt->indicate = agent_indicate;
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tmp->pvt->fixup = agent_fixup;
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strncpy(tmp->language, p->chan->language, sizeof(tmp->language)-1);
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p->owner = tmp;
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ast_pthread_mutex_lock(&usecnt_lock);
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usecnt++;
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ast_pthread_mutex_unlock(&usecnt_lock);
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ast_update_use_count();
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strncpy(tmp->context, p->chan->context, sizeof(tmp->context)-1);
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strncpy(tmp->exten, p->chan->exten, sizeof(tmp->exten)-1);
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tmp->priority = 1;
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/* Wake up any waiting blockers (by definition the login app) */
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if (p->chan->blocking) {
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pthread_kill(p->chan->blocker, SIGURG);
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/* Wait until the blocker releases it */
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while(p->chan->blocking)
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usleep(1000);
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}
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ast_moh_stop(p->chan);
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} else
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ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
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return tmp;
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}
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static int read_agent_config(void)
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{
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struct ast_config *cfg;
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struct ast_variable *v;
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struct agent_pvt *p, *pl, *pn;
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cfg = ast_load(config);
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if (!cfg) {
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ast_log(LOG_NOTICE, "No agent configuration found -- agent support disabled\n");
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return 0;
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}
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ast_pthread_mutex_lock(&agentlock);
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p = agents;
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while(p) {
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p->dead = 1;
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p = p->next;
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}
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strcpy(moh, "default");
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v = ast_variable_browse(cfg, "agents");
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while(v) {
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/* Create the interface list */
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if (!strcasecmp(v->name, "agent")) {
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add_agent(v);
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} else if (!strcasecmp(v->name, "musiconhold")) {
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strncpy(moh, v->value, sizeof(moh) - 1);
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}
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v = v->next;
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}
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p = agents;
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pl = NULL;
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while(p) {
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pn = p->next;
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if (p->dead) {
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/* Unlink */
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if (pl)
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pl->next = p->next;
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else
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agents = p->next;
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/* Destroy if appropriate */
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if (!p->owner) {
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if (!p->chan) {
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free(p);
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} else {
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/* Cause them to hang up */
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ast_softhangup(p->chan, AST_SOFTHANGUP_EXPLICIT);
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}
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}
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} else
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pl = p;
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p = pn;
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}
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ast_pthread_mutex_unlock(&agentlock);
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ast_destroy(cfg);
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return 0;
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}
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static struct ast_channel *agent_request(char *type, int format, void *data)
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{
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struct agent_pvt *p;
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struct ast_channel *chan = NULL;
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ast_pthread_mutex_lock(&agentlock);
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p = agents;
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while(p) {
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if (!strcmp(data, p->agent)) {
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ast_pthread_mutex_lock(&p->lock);
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/* Agent must be registered, but not have any active call */
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if (!p->owner && p->chan) {
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chan = agent_new(p, AST_STATE_DOWN);
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}
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ast_pthread_mutex_unlock(&p->lock);
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break;
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}
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p = p->next;
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}
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ast_pthread_mutex_unlock(&agentlock);
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return chan;
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}
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static int agents_show(int fd, int argc, char **argv)
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{
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struct agent_pvt *p;
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char username[256];
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char location[256];
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char talkingto[256];
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if (argc != 2)
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return RESULT_SHOWUSAGE;
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ast_pthread_mutex_lock(&agentlock);
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p = agents;
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while(p) {
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ast_pthread_mutex_lock(&p->lock);
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if (strlen(p->name))
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snprintf(username, sizeof(username), "(%s) ", p->name);
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else
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strcpy(username, "");
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if (p->chan) {
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snprintf(location, sizeof(location), "logged in on %s", p->chan->name);
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if (p->owner && p->owner->bridge) {
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snprintf(talkingto, sizeof(talkingto), " talking to %s", p->owner->bridge->name);
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} else {
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strcpy(talkingto, " is idle");
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}
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} else {
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strcpy(location, "not logged in");
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strcpy(talkingto, "");
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}
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ast_pthread_mutex_unlock(&p->lock);
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ast_cli(fd, "%-12.12s %s%s%s\n", p->agent,
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username, location, talkingto);
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p = p->next;
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}
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ast_pthread_mutex_unlock(&agentlock);
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return RESULT_SUCCESS;
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}
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static char show_agents_usage[] =
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"Usage: show agents\n"
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" Provides summary information on agents.\n";
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static struct ast_cli_entry cli_show_agents = {
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{ "show", "agents", NULL }, agents_show,
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"Show status of agents", show_agents_usage, NULL };
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STANDARD_LOCAL_USER;
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LOCAL_USER_DECL;
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static int login_exec(struct ast_channel *chan, void *data)
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{
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int res=0;
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int tries = 0;
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struct agent_pvt *p;
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struct localuser *u;
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char user[AST_MAX_AGENT];
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char pass[AST_MAX_AGENT];
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char xpass[AST_MAX_AGENT] = "";
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char *errmsg;
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LOCAL_USER_ADD(u);
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if (chan->_state != AST_STATE_UP)
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res = ast_answer(chan);
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if (!res)
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res = ast_app_getdata(chan, "agent-user", user, sizeof(user) - 1, 0);
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while (!res && (tries < 3)) {
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/* Check for password */
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ast_pthread_mutex_lock(&agentlock);
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p = agents;
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while(p) {
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if (!strcmp(p->agent, user))
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strncpy(xpass, p->password, sizeof(xpass) - 1);
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p = p->next;
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}
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ast_pthread_mutex_unlock(&agentlock);
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if (!res) {
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if (strlen(xpass) || !p)
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res = ast_app_getdata(chan, "agent-pass", pass, sizeof(pass) - 1, 0);
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else
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strcpy(pass, "");
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}
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errmsg = "agent-incorrect";
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#if 0
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ast_log(LOG_NOTICE, "user: %s, pass: %s\n", user, pass);
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#endif
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/* Check again for accuracy */
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ast_pthread_mutex_lock(&agentlock);
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p = agents;
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while(p) {
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ast_pthread_mutex_lock(&p->lock);
|
||||
if (!strcmp(p->agent, user) &&
|
||||
!strcmp(p->password, pass)) {
|
||||
if (!p->chan) {
|
||||
res = ast_streamfile(chan, "agent-loginok", chan->language);
|
||||
if (!res)
|
||||
ast_waitstream(chan, "");
|
||||
if (!res) {
|
||||
res = ast_set_read_format(chan, ast_best_codec(chan->nativeformats));
|
||||
if (res)
|
||||
ast_log(LOG_WARNING, "Unable to set read format to %d\n", ast_best_codec(chan->nativeformats));
|
||||
}
|
||||
if (!res) {
|
||||
ast_set_write_format(chan, ast_best_codec(chan->nativeformats));
|
||||
if (res)
|
||||
ast_log(LOG_WARNING, "Unable to set write format to %d\n", ast_best_codec(chan->nativeformats));
|
||||
}
|
||||
/* Check once more just in case */
|
||||
if (p->chan)
|
||||
res = -1;
|
||||
if (!res) {
|
||||
ast_moh_start(chan, p->moh);
|
||||
manager_event(EVENT_FLAG_AGENT, "Agentlogin",
|
||||
"Agent: %s\r\n"
|
||||
"Channel: %s\r\n",
|
||||
p->agent, chan->name);
|
||||
if (option_verbose > 2)
|
||||
ast_verbose(VERBOSE_PREFIX_3 "Agent '%s' logged in (format %d/%d)\n", p->agent,
|
||||
chan->readformat, chan->writeformat);
|
||||
/* Login this channel and wait for it to
|
||||
go away */
|
||||
p->chan = chan;
|
||||
ast_pthread_mutex_unlock(&p->lock);
|
||||
ast_pthread_mutex_unlock(&agentlock);
|
||||
while ((res >= 0) && (p->chan == chan)) {
|
||||
/* True sleep here, since we're being monitored
|
||||
elsewhere instead */
|
||||
if (p->owner)
|
||||
sleep(1);
|
||||
else
|
||||
res = ast_safe_sleep(chan, 1000);
|
||||
}
|
||||
if (res && p->owner)
|
||||
ast_log(LOG_WARNING, "Huh? We broke out when there was still an owner?\n");
|
||||
/* Log us off if appropriate */
|
||||
if (p->chan == chan)
|
||||
p->chan = NULL;
|
||||
if (option_verbose > 2)
|
||||
ast_verbose(VERBOSE_PREFIX_3 "Agent '%s' logged out\n", p->agent);
|
||||
manager_event(EVENT_FLAG_AGENT, "Agentlogoff",
|
||||
"Agent: %s\r\n",
|
||||
p->agent);
|
||||
/* If there is no owner, go ahead and kill it now */
|
||||
if (p->dead && !p->owner)
|
||||
free(p);
|
||||
}
|
||||
res = -1;
|
||||
} else {
|
||||
ast_pthread_mutex_unlock(&p->lock);
|
||||
errmsg = "agent-alreadyon";
|
||||
p = NULL;
|
||||
}
|
||||
break;
|
||||
}
|
||||
ast_pthread_mutex_unlock(&p->lock);
|
||||
p = p->next;
|
||||
}
|
||||
if (!p)
|
||||
ast_pthread_mutex_unlock(&agentlock);
|
||||
|
||||
if (!res)
|
||||
res = ast_app_getdata(chan, errmsg, user, sizeof(user) - 1, 0);
|
||||
}
|
||||
|
||||
LOCAL_USER_REMOVE(u);
|
||||
/* Always hangup */
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
int load_module()
|
||||
{
|
||||
/* Make sure we can register our sip channel type */
|
||||
if (ast_channel_register(type, tdesc, capability, agent_request)) {
|
||||
ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
|
||||
return -1;
|
||||
}
|
||||
ast_register_application(app, login_exec, synopsis, descrip);
|
||||
ast_cli_register(&cli_show_agents);
|
||||
/* Read in the config */
|
||||
read_agent_config();
|
||||
return 0;
|
||||
}
|
||||
|
||||
int reload()
|
||||
{
|
||||
read_agent_config();
|
||||
return 0;
|
||||
}
|
||||
|
||||
int unload_module()
|
||||
{
|
||||
struct agent_pvt *p;
|
||||
/* First, take us out of the channel loop */
|
||||
ast_cli_unregister(&cli_show_agents);
|
||||
ast_unregister_application(app);
|
||||
ast_channel_unregister(type);
|
||||
if (!ast_pthread_mutex_lock(&agentlock)) {
|
||||
/* Hangup all interfaces if they have an owner */
|
||||
p = agents;
|
||||
while(p) {
|
||||
if (p->owner)
|
||||
ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
|
||||
p = p->next;
|
||||
}
|
||||
agents = NULL;
|
||||
ast_pthread_mutex_unlock(&agentlock);
|
||||
} else {
|
||||
ast_log(LOG_WARNING, "Unable to lock the monitor\n");
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int usecount()
|
||||
{
|
||||
int res;
|
||||
ast_pthread_mutex_lock(&usecnt_lock);
|
||||
res = usecnt;
|
||||
ast_pthread_mutex_unlock(&usecnt_lock);
|
||||
return res;
|
||||
}
|
||||
|
||||
char *key()
|
||||
{
|
||||
return ASTERISK_GPL_KEY;
|
||||
}
|
||||
|
||||
char *description()
|
||||
{
|
||||
return desc;
|
||||
}
|
||||
|
||||
@ -0,0 +1,11 @@
|
||||
;
|
||||
; Agent configuration
|
||||
;
|
||||
;
|
||||
[agents]
|
||||
;
|
||||
; This section contains the agent definitions, in the form:
|
||||
;
|
||||
; agent => agentid,agentpassword,name
|
||||
;
|
||||
;agent => 1234,4321,Mark Spencer
|
||||
@ -0,0 +1,12 @@
|
||||
;
|
||||
; Asterisk Call Management support
|
||||
;
|
||||
[general]
|
||||
enabled = no
|
||||
port = 5038
|
||||
bindaddr = 0.0.0.0
|
||||
|
||||
;[mark]
|
||||
;secret = mysecret
|
||||
;read = system,call,log,verbose,command,agent
|
||||
;write = system,call,log,verbose,command,agent
|
||||
@ -0,0 +1,52 @@
|
||||
/*
|
||||
* Asterisk -- A telephony toolkit for Linux.
|
||||
*
|
||||
* External call management support
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* Includes code and algorithms from the Zapata library.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _ASTERISK_MANAGER_H
|
||||
#define _ASTERISK_MANAGER_H
|
||||
|
||||
#include <stdarg.h>
|
||||
|
||||
/*
|
||||
* Call management packages are text fields of the form a: b. There is
|
||||
* always exactly one space after the colon.
|
||||
*
|
||||
* The first header type is the "Event" header. Other headers vary from
|
||||
* event to event. Headers end with standard \r\n termination.
|
||||
*
|
||||
* Some standard headers:
|
||||
*
|
||||
* Action: <action> -- request or notification of a particular action
|
||||
* Response: <response> -- response code, like "200 OK"
|
||||
*
|
||||
*/
|
||||
|
||||
#define DEFAULT_MANAGER_PORT 5038 /* Default port for Asterisk management via TCP */
|
||||
|
||||
#define EVENT_FLAG_SYSTEM (1 << 0) /* System events such as module load/unload */
|
||||
#define EVENT_FLAG_CALL (1 << 1) /* Call event, such as state change, etc */
|
||||
#define EVENT_FLAG_LOG (1 << 2) /* Log events */
|
||||
#define EVENT_FLAG_VERBOSE (1 << 3) /* Verbose messages */
|
||||
#define EVENT_FLAG_COMMAND (1 << 4) /* Ability to read/set commands */
|
||||
#define EVENT_FLAG_AGENT (1 << 5) /* Ability to read/set agent info */
|
||||
|
||||
/* External routines may send asterisk manager events this way */
|
||||
extern int manager_event(int category, char *event, char *contents, ...)
|
||||
__attribute__ ((format (printf, 3,4)));
|
||||
|
||||
/* Called by Asterisk initialization */
|
||||
extern int init_manager(void);
|
||||
extern int reload_manager(void);
|
||||
#endif
|
||||
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Loading…
Reference in new issue