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// cmdline.cpp
/**
* Copyright (C) 2008 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "pch.h"
#include "cmdline.h"
#include "commands.h"
#include "../util/processinfo.h"
namespace po = boost::program_options;
namespace mongo {
void setupSignals();
BSONArray argvArray;
void CmdLine::addGlobalOptions( boost::program_options::options_description& general ,
boost::program_options::options_description& hidden ){
/* support for -vv -vvvv etc. */
for (string s = "vv"; s.length() <= 12; s.append("v")) {
hidden.add_options()(s.c_str(), "verbose");
}
general.add_options()
("help,h", "show this usage information")
("version", "show version information")
("config,f", po::value<string>(), "configuration file specifying additional options")
("verbose,v", "be more verbose (include multiple times for more verbosity e.g. -vvvvv)")
("quiet", "quieter output")
("port", po::value<int>(&cmdLine.port), "specify port number")
("bind_ip", po::value<string>(&cmdLine.bind_ip), "comma separated list of ip addresses to listen on - all local ips by default")
("logpath", po::value<string>() , "file to send all output to instead of stdout" )
("logappend" , "append to logpath instead of over-writing" )
("pidfilepath", po::value<string>(), "full path to pidfile (if not set, no pidfile is created)")
#ifndef _WIN32
("fork" , "fork server process" )
#endif
;
}
bool CmdLine::store( int argc , char ** argv ,
boost::program_options::options_description& visible,
boost::program_options::options_description& hidden,
boost::program_options::positional_options_description& positional,
boost::program_options::variables_map ¶ms ){
/* don't allow guessing - creates ambiguities when some options are
* prefixes of others. allow long disguises and don't allow guessing
* to get away with our vvvvvvv trick. */
int style = (((po::command_line_style::unix_style ^
po::command_line_style::allow_guessing) |
po::command_line_style::allow_long_disguise) ^
po::command_line_style::allow_sticky);
try {
po::options_description all;
all.add( visible );
all.add( hidden );
po::store( po::command_line_parser(argc, argv)
.options( all )
.positional( positional )
.style( style )
.run(),
params );
if ( params.count("config") ){
ifstream f( params["config"].as<string>().c_str() );
if ( ! f.is_open() ){
cout << "ERROR: could not read from config file" << endl << endl;
cout << visible << endl;
return false;
}
po::store( po::parse_config_file( f , all ) , params );
f.close();
}
po::notify(params);
}
catch (po::error &e) {
cout << "ERROR: " << e.what() << endl << endl;
cout << visible << endl;
return false;
}
if (params.count("verbose")) {
logLevel = 1;
}
for (string s = "vv"; s.length() <= 12; s.append("v")) {
if (params.count(s)) {
logLevel = s.length();
}
}
if (params.count("quiet")) {
cmdLine.quiet = true;
}
string logpath;
#ifndef _WIN32
if (params.count("fork")) {
if ( ! params.count( "logpath" ) ){
cout << "--fork has to be used with --logpath" << endl;
::exit(-1);
}
{ // test logpath
logpath = params["logpath"].as<string>();
assert( logpath.size() );
if ( logpath[0] != '/' ){
char temp[256];
assert( getcwd( temp , 256 ) );
logpath = (string)temp + "/" + logpath;
}
FILE * test = fopen( logpath.c_str() , "a" );
if ( ! test ){
cout << "can't open [" << logpath << "] for log file: " << errnoWithDescription() << endl;
::exit(-1);
}
fclose( test );
}
cout.flush();
cerr.flush();
pid_t c = fork();
if ( c ){
_exit(0);
}
if ( chdir("/") < 0 ){
cout << "Cant chdir() while forking server process: " << strerror(errno) << endl;
::exit(-1);
}
setsid();
pid_t c2 = fork();
if ( c2 ){
cout << "forked process: " << c2 << endl;
_exit(0);
}
// stdout handled in initLogging
//fclose(stdout);
//freopen("/dev/null", "w", stdout);
fclose(stderr);
fclose(stdin);
FILE* f = freopen("/dev/null", "w", stderr);
if ( f == NULL ){
cout << "Cant reassign stderr while forking server process: " << strerror(errno) << endl;
::exit(-1);
}
f = freopen("/dev/null", "r", stdin);
if ( f == NULL ){
cout << "Cant reassign stdin while forking server process: " << strerror(errno) << endl;
::exit(-1);
}
setupCoreSignals();
setupSignals();
}
#endif
if (params.count("logpath")) {
if ( logpath.size() == 0 )
logpath = params["logpath"].as<string>();
uassert( 10033 , "logpath has to be non-zero" , logpath.size() );
initLogging( logpath , params.count( "logappend" ) );
}
if ( params.count("pidfilepath")) {
writePidFile( params["pidfilepath"].as<string>() );
}
{
BSONArrayBuilder b;
for (int i=0; i < argc; i++)
b << argv[i];
argvArray = b.arr();
}
return true;
}
void ignoreSignal( int signal ){
}
void setupCoreSignals(){
#if !defined(_WIN32)
assert( signal(SIGUSR1 , rotateLogs ) != SIG_ERR );
assert( signal(SIGHUP , ignoreSignal ) != SIG_ERR );
#endif
}
class CmdGetCmdLineOpts : Command{
public:
CmdGetCmdLineOpts(): Command("getCmdLineOpts") {}
void help(stringstream& h) const { h << "get argv"; }
virtual LockType locktype() const { return NONE; }
virtual bool adminOnly() const { return true; }
virtual bool slaveOk() const { return true; }
virtual bool run(const string&, BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool fromRepl){
result.append("argv", argvArray);
return true;
}
} cmdGetCmdLineOpts;
}
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