pid file with pdns_ prefix.

[thirdparty/pdns.git] / pdns / rec_control.cc

/*
    PowerDNS Versatile Database Driven Nameserver
    Copyright (C) 2006 - 2011 PowerDNS.COM BV

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License version 2 as 
    published by the Free Software Foundation

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
#include "rec_channel.hh"
#include <iostream>
#include "pdnsexception.hh"
#include "arguments.hh"
#include "config.h"

#include "namespaces.hh"

#ifndef RECURSOR
#include "statbag.hh"
StatBag S;
#endif

ArgvMap &arg()
{
  static ArgvMap arg;
  return arg;
}

static void initArguments(int argc, char** argv)
{
  arg().set("config-dir","Location of configuration directory (recursor.conf)")=SYSCONFDIR;

  arg().set("socket-dir","Where the controlsocket will live")=LOCALSTATEDIR;
  arg().set("process","When controlling multiple recursors, the target process number")="";
  arg().set("timeout", "Number of seconds to wait for the recursor to respond")="5";
  arg().set("config-name","Name of this virtual configuration - will rename the binary image")="";
  arg().setCmd("help","Provide this helpful message");

  arg().laxParse(argc,argv);  
  if(arg().getCommands().empty() || arg().mustDo("help")) {
    cerr<<"syntax: rec_control [options] command, options as below: "<<endl<<endl;
    cerr<<arg().helpstring(arg()["help"])<<endl;
    exit(99);
  }

  string configname=::arg()["config-dir"]+"/recursor.conf";
  if (::arg()["config-name"] != "")
    configname=::arg()["config-dir"]+"/recursor-"+::arg()["config-name"]+".conf";
  
  cleanSlashes(configname);

  if(!::arg().preParseFile(configname.c_str(), "socket-dir", LOCALSTATEDIR)) 
    cerr<<"Warning: unable to parse configuration file '"<<configname<<"'"<<endl;
  arg().laxParse(argc,argv);   // make sure the commandline wins
}

int main(int argc, char** argv)
try
{
  initArguments(argc, argv);
  RecursorControlChannel rccS;
  string sockname="recursor";

  if (arg()["config-name"] != "")
    sockname+="-"+arg()["config-name"];

  if(!arg()["process"].empty())
    sockname+="."+arg()["process"];

  sockname.append(".controlsocket");

  rccS.connect(arg()["socket-dir"], sockname);

  const vector<string>&commands=arg().getCommands();
  string command;
  for(unsigned int i=0; i< commands.size(); ++i) {
    if(i>0)
      command+=" ";
    command+=commands[i];
  }
  rccS.send(command);
  string receive=rccS.recv(0, arg().asNum("timeout"));
  cout<<receive;
  return 0;
}
catch(PDNSException& ae)
{
  cerr<<"Fatal: "<<ae.reason<<"\n";
  return 1;
}