680 lines
17 KiB
C++
680 lines
17 KiB
C++
/**
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* rmanager.cpp
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* This file is part of the YATE Project http://YATE.null.ro
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*
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* This module gets the messages from YATE out so anyone can use an
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* administrating interface.
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*
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* Yet Another Telephony Engine - a fully featured software PBX and IVR
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* Copyright (C) 2004-2006 Null Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <yatengine.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include <fcntl.h>
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#ifdef HAVE_COREDUMPER
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#include <google/coredumper.h>
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#endif
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using namespace TelEngine;
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namespace { // anonymous
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static const char s_helpmsg[] =
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"Available commands:\n"
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" quit\n"
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" help [command]\n"
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" status [module]\n"
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" uptime\n"
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" machine [on|off]\n"
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" output [on|off]\n"
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" color [on|off]\n"
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" auth password\n"
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"Authenticated commands:\n"
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" debug [level|on|off]\n"
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#ifdef HAVE_COREDUMPER
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" coredump [filename]\n"
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#endif
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" drop {chan|*|all}\n"
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" call chan target\n"
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" reload\n"
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" restart [now]\n"
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" stop [exitcode]\n";
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static Configuration s_cfg;
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static bool s_output = false;
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/* I need this here because i'm gonna use it in both classes */
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Socket s_sock;
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Mutex s_mutex(true);
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//we gonna create here the list with all the new connections.
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static ObjList connectionlist;
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class RManagerThread : public Thread
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{
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public:
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RManagerThread() : Thread("RManager Listener") { }
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virtual void run();
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private:
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};
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class Connection : public GenObject, public Thread
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{
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public:
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Connection(Socket* sock, const char* addr);
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~Connection();
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virtual void run();
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bool processLine(const char *line);
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void writeStr(const char *str, int len = -1);
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void writeDebug(const char *str, int level);
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void writeStr(const Message &msg, bool received);
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inline void writeStr(const String &s)
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{ writeStr(s.safe(),s.length()); }
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inline const String& address() const
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{ return m_address; }
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static Connection *checkCreate(Socket* sock, const char* addr = 0);
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private:
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bool m_auth;
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bool m_debug;
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bool m_output;
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bool m_colorize;
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bool m_machine;
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Socket* m_socket;
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String m_address;
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String m_lastcmd;
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};
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class RManager : public Plugin
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{
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public:
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RManager();
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~RManager();
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virtual void initialize();
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virtual bool isBusy() const;
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private:
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bool m_first;
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};
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class RHook : public MessagePostHook
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{
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public:
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virtual void dispatched(const Message& msg, bool handled);
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};
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static void dbg_remote_func(const char *buf, int level)
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{
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s_mutex.lock();
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ObjList *p = &connectionlist;
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for (; p; p=p->next()) {
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Connection *con = static_cast<Connection *>(p->get());
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if (con)
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con->writeDebug(buf,level);
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}
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s_mutex.unlock();
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}
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void RManagerThread::run()
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{
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for (;;)
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{
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Thread::msleep(10,true);
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SocketAddr sa;
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Socket* as = s_sock.accept(sa);
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if (!as) {
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if (!s_sock.canRetry())
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Debug("RManager",DebugWarn, "Accept error: %s\n", strerror(s_sock.error()));
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continue;
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} else {
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String addr(sa.host());
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addr << ":" << sa.port();
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if (!Connection::checkCreate(as,addr))
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Debug("RManager",DebugWarn,"Connection rejected for %s",addr.c_str());
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}
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}
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}
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Connection *Connection::checkCreate(Socket* sock, const char* addr)
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{
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if (!sock)
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return 0;
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if (!sock->valid()) {
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delete sock;
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return 0;
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}
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// should check IP address here
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Connection *conn = new Connection(sock,addr);
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if (conn->error()) {
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delete conn;
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return 0;
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}
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conn->startup();
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return conn;
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}
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Connection::Connection(Socket* sock, const char* addr)
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: Thread("RManager Connection"),
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m_auth(false), m_debug(false), m_output(s_output), m_colorize(false), m_machine(false),
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m_socket(sock), m_address(addr)
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{
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s_mutex.lock();
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connectionlist.append(this);
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s_mutex.unlock();
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}
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Connection::~Connection()
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{
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m_debug = false;
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m_output = false;
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s_mutex.lock();
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connectionlist.remove(this,false);
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s_mutex.unlock();
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Output("Closing connection to %s",m_address.c_str());
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delete m_socket;
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m_socket = 0;
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}
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void Connection::run()
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{
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if (!m_socket)
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return;
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if (!m_socket->setBlocking(false)) {
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Debug("RManager",DebugGoOn, "Failed to set tcp socket to nonblocking mode: %s\n",strerror(m_socket->error()));
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return;
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}
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// For the sake of responsiveness try to turn off the tcp assembly timer
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int arg = 1;
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if (s_cfg.getBoolValue("general","interactive",false) &&
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!m_socket->setOption(SOL_SOCKET, TCP_NODELAY, &arg, sizeof(arg)))
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Debug("RManager",DebugMild, "Failed to set tcp socket to TCP_NODELAY mode: %s\n", strerror(m_socket->error()));
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Output("Remote connection from %s",m_address.c_str());
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m_auth = !s_cfg.getValue("general","password");
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const char *hdr = s_cfg.getValue("general","header","YATE (http://YATE.null.ro) ready.");
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if (hdr) {
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writeStr(hdr);
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writeStr("\n");
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hdr = 0;
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}
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struct timeval timer;
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char buffer[300];
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int posinbuf = 0;
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while (posinbuf < (int)sizeof(buffer)-1) {
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Thread::check();
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timer.tv_sec = 0;
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timer.tv_usec = 10000;
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bool readok = false;
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bool error = false;
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if (m_socket->select(&readok,0,&error,&timer)) {
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if (error) {
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Debug("RManager",DebugInfo,"Socket exception condition on %d",m_socket->handle());
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return;
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}
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if (!readok)
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continue;
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int readsize = m_socket->readData(buffer+posinbuf,sizeof(buffer)-posinbuf-1);
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if (!readsize) {
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Debug("RManager",DebugInfo,"Socket condition EOF on %d",m_socket->handle());
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return;
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}
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else if (readsize > 0) {
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int totalsize = readsize + posinbuf;
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buffer[totalsize]=0;
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XDebug("RManager",DebugInfo,"read=%d pos=%d buffer='%s'",readsize,posinbuf,buffer);
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for (;;) {
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// Try to accomodate various telnet modes
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char *eoline = ::strchr(buffer,'\r');
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if (!eoline)
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eoline = ::strchr(buffer,'\n');
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if (!eoline && ((int)::strlen(buffer) < totalsize))
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eoline=buffer+::strlen(buffer);
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if (!eoline)
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break;
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*eoline=0;
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if (buffer[0] && processLine(buffer))
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return;
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totalsize -= eoline-buffer+1;
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::memmove(buffer,eoline+1,totalsize+1);
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}
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posinbuf = totalsize;
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}
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else if (!m_socket->canRetry()) {
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Debug("RManager",DebugWarn,"Socket read error %d on %d",errno,m_socket->handle());
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return;
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}
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}
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else if (!m_socket->canRetry()) {
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Debug("RManager",DebugWarn,"socket select error %d on %d",errno,m_socket->handle());
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return;
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}
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}
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}
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bool Connection::processLine(const char *line)
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{
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DDebug("RManager",DebugInfo,"processLine = %s",line);
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String str(line);
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str.trimBlanks();
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// backslash or ANSI up arrow to repeat last command - very handy
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if ((str == "\\") || (str == "\033[A") || (str == "\033[1A") || (str == "\033A")) {
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if (m_lastcmd.null())
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return false;
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// display up arrow, clear to EOL, last command
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str = "\033[A\033[K" + m_lastcmd + "\n";
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writeStr(str);
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str = m_lastcmd;
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}
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else
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m_lastcmd = str;
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if (str.startSkip("status"))
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{
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Message m("engine.status");
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if (str.null() || (str == "rmanager"))
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m.retValue() << "name=rmanager,type=misc;conn=" << connectionlist.count() << "\n";
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if (!str.null()) {
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m.addParam("module",str);
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str = ":" + str;
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}
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Engine::dispatch(m);
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str = "%%+status" + str + "\n";
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str << m.retValue() << "%%-status\n";
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writeStr(str);
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return false;
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}
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else if (str.startSkip("machine"))
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{
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str >> m_machine;
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str = "Machine mode: ";
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str += (m_machine ? "on\n" : "off\n");
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writeStr(str);
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return false;
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}
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else if (str.startSkip("output"))
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{
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str >> m_output;
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str = "Output mode: ";
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str += (m_output ? "on\n" : "off\n");
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writeStr(str);
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return false;
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}
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else if (str.startSkip("color"))
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{
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str >> m_colorize;
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str = "Colorized output: ";
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str += (m_colorize ? "yes\n" : "no\n");
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writeStr(str);
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return false;
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}
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else if (str.startSkip("uptime"))
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{
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str.clear();
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u_int32_t t = SysUsage::secRunTime();
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if (m_machine) {
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str << "%%=uptime:" << (unsigned int)t;
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(str << ":").append(SysUsage::runTime(SysUsage::UserTime));
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(str << ":").append(SysUsage::runTime(SysUsage::KernelTime));
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}
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else {
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char buf[64];
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::sprintf(buf,"%u:%02u:%02u (%u)",t / 3600,(t / 60) % 60,t % 60,t);
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str << "Uptime: " << buf;
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(str << " user: ").append(SysUsage::runTime(SysUsage::UserTime));
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(str << " kernel: ").append(SysUsage::runTime(SysUsage::KernelTime));
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}
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str << "\n";
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writeStr(str);
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return false;
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}
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else if (str.startSkip("quit"))
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{
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writeStr(m_machine ? "%%=quit\n" : "Goodbye!\n");
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return true;
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}
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else if (str.startSkip("help") || str.startSkip("?"))
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{
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Message m("engine.help");
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if (!str.null())
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{
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m.addParam("line",str);
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if (Engine::dispatch(m))
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writeStr(m.retValue());
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else
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writeStr("No help for '"+str+"'\n");
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}
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else
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{
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m.retValue() = s_helpmsg;
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Engine::dispatch(m);
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writeStr(m.retValue());
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}
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return false;
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}
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else if (str.startSkip("auth"))
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{
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if (m_auth) {
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writeStr(m_machine ? "%%=auth:success\n" : "You are already authenticated!\n");
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return false;
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}
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if (str == s_cfg.getValue("general","password")) {
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Output("Authenticated connection %s",m_address.c_str());
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m_auth = true;
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writeStr(m_machine ? "%%=auth:success\n" : "Authenticated successfully!\n");
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}
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else
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writeStr(m_machine ? "%%=auth:fail=badpass\n" : "Bad authentication password!\n");
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return false;
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}
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if (!m_auth) {
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writeStr(m_machine ? "%%=*:fail=noauth\n" : "Not authenticated!\n");
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return false;
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}
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if (str.startSkip("drop"))
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{
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if (str.null()) {
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writeStr(m_machine ? "%%=drop:fail=noarg\n" : "You must specify what connection to drop!\n");
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return false;
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}
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Message m("call.drop");
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bool all = false;
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if (str == "*" || str == "all") {
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all = true;
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str = "all calls";
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}
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else
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m.addParam("id",str);
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if (Engine::dispatch(m))
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str = (m_machine ? "%%=drop:success:" : "Dropped ") + str + "\n";
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else if (all)
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str = (m_machine ? "%%=drop:unknown:" : "Tried to drop ") + str + "\n";
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else
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str = (m_machine ? "%%=drop:fail:" : "Could not drop ") + str + "\n";
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writeStr(str);
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}
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else if (str.startSkip("call"))
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{
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int pos = str.find(' ');
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if (pos <= 0) {
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writeStr(m_machine ? "%%=call:fail=noarg\n" : "You must specify source and target!\n");
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return false;
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}
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String target = str.substr(pos+1);
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Message m("call.execute");
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m.addParam("callto",str.substr(0,pos));
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m.addParam((target.find('/') > 0) ? "direct" : "target",target);
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if (Engine::dispatch(m)) {
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String id(m.getValue("id"));
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if (m_machine)
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str = "%%=call:success:" + id + ":" + str + "\n";
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else
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str = "Calling '" + id + "' " + str + "\n";
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}
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else
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str = (m_machine ? "%%=call:fail:" : "Could not call ") + str + "\n";
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writeStr(str);
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}
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else if (str.startSkip("debug"))
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{
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if (str.startSkip("level")) {
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int dbg = debugLevel();
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str >> dbg;
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dbg = debugLevel(dbg);
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}
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else if (str.isBoolean()) {
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str >> m_debug;
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if (m_debug)
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Debugger::enableOutput(true);
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}
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else if (str) {
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String l;
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int pos = str.find(' ');
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if (pos > 0) {
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l = str.substr(pos+1);
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str = str.substr(0,pos);
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str.trimBlanks();
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}
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if (str.null()) {
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writeStr(m_machine ? "%%=debug:fail=noarg\n" : "You must specify debug module name!\n");
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return false;
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}
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Message m("engine.debug");
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m.addParam("module",str);
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if (l)
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m.addParam("line",l);
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if (Engine::dispatch(m))
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writeStr(m.retValue());
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else
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writeStr((m_machine ? "%%=debug:fail:" : "Cannot set debug: ") + str + " " + l + "\n");
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return false;
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}
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if (m_machine) {
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str = "%%=debug:level=";
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str << debugLevel() << ":local=" << m_debug << "\n";
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}
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else {
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str = "Debug level: ";
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str << debugLevel() << " local: " << (m_debug ? "on\n" : "off\n");
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}
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writeStr(str);
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}
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#ifdef HAVE_COREDUMPER
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else if (str.startSkip("coredump"))
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{
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if (str.null())
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(str << "core.yate-" << ::getpid() << "-").append(SysUsage::runTime());
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s_mutex.lock();
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int err = 0;
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for (int i = 0; i < 4; i++) {
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if (!WriteCoreDump(str)) {
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err = 0;
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break;
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}
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err = errno;
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switch (err) {
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case EINTR:
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case EAGAIN:
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case ECHILD:
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continue;
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}
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break;
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}
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if (err) {
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str = "Failed to dump core: ";
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str << ::strerror(err) << " (" << err << ")\n";
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}
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else
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str = "Dumped core to: " + str + "\n";
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s_mutex.unlock();
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writeStr(str);
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}
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#endif
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else if (str.startSkip("reload"))
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{
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writeStr(m_machine ? "%%=reload\n" : "Reinitializing...\n");
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Engine::init();
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}
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else if (str.startSkip("restart"))
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{
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bool gracefull = (str != "now");
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bool ok = Engine::restart(0,gracefull);
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if (ok) {
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if (m_machine) {
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writeStr("%%=restart\n");
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return gracefull;
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}
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writeStr(gracefull ? "Restart scheduled - please disconnect\n" : "Engine restarting - bye!\n");
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}
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else
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writeStr(m_machine ? "%%=restart:fail\n" : "Cannot restart - no supervisor or already shutting down\n");
|
|
}
|
|
else if (str.startSkip("stop"))
|
|
{
|
|
unsigned code = 0;
|
|
str >> code;
|
|
code &= 0xff;
|
|
writeStr(m_machine ? "%%=shutdown\n" : "Engine shutting down - bye!\n");
|
|
Engine::halt(code);
|
|
}
|
|
else
|
|
{
|
|
Message m("engine.command");
|
|
m.addParam("line",str);
|
|
if (Engine::dispatch(m))
|
|
writeStr(m.retValue());
|
|
else
|
|
writeStr((m_machine ? "%%=syntax:" : "Cannot understand: ") + str + "\n");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void Connection::writeStr(const Message &msg, bool received)
|
|
{
|
|
if (!m_machine)
|
|
return;
|
|
String s = msg.encode(received,"");
|
|
s << "\n";
|
|
writeStr(s.c_str());
|
|
}
|
|
|
|
void Connection::writeDebug(const char *str, int level)
|
|
{
|
|
if (null(str))
|
|
return;
|
|
if (m_debug || (m_output && (level < 0))) {
|
|
const char* col = m_colorize ? debugColor(level) : 0;
|
|
if (col)
|
|
writeStr(col,::strlen(col));
|
|
writeStr(str,::strlen(str));
|
|
if (col)
|
|
col = debugColor(-2);
|
|
if (col)
|
|
writeStr(col,::strlen(col));
|
|
}
|
|
}
|
|
|
|
void Connection::writeStr(const char *str, int len)
|
|
{
|
|
if (len < 0)
|
|
len = ::strlen(str);
|
|
if (int written = m_socket->writeData(str,len) != len) {
|
|
Debug("RManager",DebugInfo,"Socket %d wrote only %d out of %d bytes",m_socket->handle(),written,len);
|
|
// Destroy the thread, will kill the connection
|
|
cancel();
|
|
}
|
|
}
|
|
|
|
void RHook::dispatched(const Message& msg, bool handled)
|
|
{
|
|
s_mutex.lock();
|
|
ObjList *p = &connectionlist;
|
|
for (; p; p=p->next()) {
|
|
Connection *con = static_cast<Connection *>(p->get());
|
|
if (con)
|
|
con->writeStr(msg,handled);
|
|
}
|
|
s_mutex.unlock();
|
|
};
|
|
|
|
|
|
RManager::RManager()
|
|
: m_first(true)
|
|
{
|
|
Output("Loaded module RManager");
|
|
Debugger::setIntOut(dbg_remote_func);
|
|
}
|
|
|
|
RManager::~RManager()
|
|
{
|
|
Output("Unloading module RManager");
|
|
s_sock.terminate();
|
|
Debugger::setIntOut(0);
|
|
}
|
|
|
|
bool RManager::isBusy() const
|
|
{
|
|
return (connectionlist.count() != 0);
|
|
}
|
|
|
|
void RManager::initialize()
|
|
{
|
|
Output("Initializing module RManager");
|
|
s_cfg = Engine::configFile("rmanager");
|
|
s_cfg.load();
|
|
s_output = s_cfg.getBoolValue("general","output",false);
|
|
|
|
if (s_sock.valid())
|
|
return;
|
|
|
|
// check configuration
|
|
int port = s_cfg.getIntValue("general","port",5038);
|
|
const char *host = c_safe(s_cfg.getValue("general","addr","127.0.0.1"));
|
|
if (!(port && *host))
|
|
return;
|
|
|
|
s_sock.create(AF_INET, SOCK_STREAM);
|
|
if (!s_sock.valid()) {
|
|
Debug("RManager",DebugGoOn,"Unable to create the listening socket: %s",strerror(s_sock.error()));
|
|
return;
|
|
}
|
|
|
|
if (!s_sock.setBlocking(false)) {
|
|
Debug("RManager",DebugGoOn, "Failed to set listener to nonblocking mode: %s\n",strerror(s_sock.error()));
|
|
return;
|
|
}
|
|
|
|
const int reuseFlag = 1;
|
|
s_sock.setOption(SOL_SOCKET,SO_REUSEADDR,&reuseFlag,sizeof(reuseFlag));
|
|
|
|
SocketAddr sa(AF_INET);
|
|
sa.host(host);
|
|
sa.port(port);
|
|
if (!s_sock.bind(sa)) {
|
|
Debug("RManager",DebugGoOn,"Failed to bind to %s:%u : %s",sa.host().c_str(),sa.port(),strerror(s_sock.error()));
|
|
s_sock.terminate();
|
|
return;
|
|
}
|
|
if (!s_sock.listen(2)) {
|
|
Debug("RManager",DebugGoOn,"Unable to listen on socket: %s\n", strerror(s_sock.error()));
|
|
s_sock.terminate();
|
|
return;
|
|
}
|
|
|
|
// don't bother to install handlers until we are listening
|
|
if (m_first) {
|
|
m_first = false;
|
|
Engine::self()->setHook(new RHook);
|
|
RManagerThread *mt = new RManagerThread;
|
|
mt->startup();
|
|
}
|
|
}
|
|
|
|
INIT_PLUGIN(RManager);
|
|
|
|
}; // anonymous namespace
|
|
|
|
/* vi: set ts=8 sw=4 sts=4 noet: */
|