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|
// --------------------------------------------------------------------------
//
// File
// Name: bbackupctl.cpp
// Purpose: bbackupd daemon control program
// Created: 18/2/04
//
// --------------------------------------------------------------------------
#include "Box.h"
#include <stdio.h>
#include <unistd.h>
#include "MainHelper.h"
#include "BoxPortsAndFiles.h"
#include "BackupDaemonConfigVerify.h"
#include "Socket.h"
#include "SocketStream.h"
#include "IOStreamGetLine.h"
#include "MemLeakFindOn.h"
void PrintUsageAndExit()
{
printf("Usage: bbackupctl [-q] [-c config_file] <command>\n"
"Commands are:\n"
" sync -- start a syncronisation run now\n"
" force-sync -- force the start of a syncronisation run, even if SyncAllowScript says no\n"
" reload -- reload daemon configuration\n"
" terminate -- terminate daemon now\n"
" wait-for-sync -- wait until the next sync starts, then exit\n"
);
exit(1);
}
int main(int argc, const char *argv[])
{
int returnCode = 0;
MAINHELPER_SETUP_MEMORY_LEAK_EXIT_REPORT("bbackupctl.memleaks", "bbackupctl")
MAINHELPER_START
// Filename for configuraiton file?
const char *configFilename = BOX_FILE_BBACKUPD_DEFAULT_CONFIG;
// Quiet?
bool quiet = false;
// See if there's another entry on the command line
int c;
while((c = getopt(argc, (char * const *)argv, "qc:l:")) != -1)
{
switch(c)
{
case 'q':
// Quiet mode
quiet = true;
break;
case 'c':
// store argument
configFilename = optarg;
break;
case '?':
default:
PrintUsageAndExit();
}
}
// Adjust arguments
argc -= optind;
argv += optind;
// Check there's a command
if(argc != 1)
{
PrintUsageAndExit();
}
// Read in the configuration file
if(!quiet) printf("Using configuration file %s\n", configFilename);
std::string errs;
std::auto_ptr<Configuration> config(Configuration::LoadAndVerify(configFilename, &BackupDaemonConfigVerify, errs));
if(config.get() == 0 || !errs.empty())
{
printf("Invalid configuration file:\n%s", errs.c_str());
return 1;
}
// Easier coding
const Configuration &conf(*config);
// Check there's a socket defined in the config file
if(!conf.KeyExists("CommandSocket"))
{
printf("Daemon isn't using a control socket, could not execute command.\nAdd a CommandSocket declaration to the bbackupd.conf file.\n");
return 1;
}
// Connect to socket
SocketStream connection;
try
{
connection.Open(Socket::TypeUNIX, conf.GetKeyValue("CommandSocket").c_str());
}
catch(...)
{
printf("Failed to connect to daemon control socket.\n" \
"Possible causes:\n" \
" * Daemon not running\n" \
" * Daemon busy syncing with store server\n" \
" * Another bbackupctl process is communicating with the daemon\n" \
" * Daemon is waiting to recover from an error\n"
);
return 1;
}
// For receiving data
IOStreamGetLine getLine(connection);
// Wait for the configuration summary
std::string configSummary;
if(!getLine.GetLine(configSummary))
{
printf("Failed to receive configuration summary from daemon\n");
return 1;
}
// Was the connection rejected by the server?
if(getLine.IsEOF())
{
printf("Server rejected the connection. Are you running bbackupctl as the same user as the daemon?\n");
return 1;
}
// Decode it
int autoBackup, updateStoreInterval, minimumFileAge, maxUploadWait;
if(::sscanf(configSummary.c_str(), "bbackupd: %d %d %d %d", &autoBackup,
&updateStoreInterval, &minimumFileAge, &maxUploadWait) != 4)
{
printf("Config summary didn't decode\n");
return 1;
}
// Print summary?
if(!quiet)
{
printf("Daemon configuration summary:\n" \
" AutomaticBackup = %s\n" \
" UpdateStoreInterval = %d seconds\n" \
" MinimumFileAge = %d seconds\n" \
" MaxUploadWait = %d seconds\n",
autoBackup?"true":"false", updateStoreInterval, minimumFileAge, maxUploadWait);
}
// Is the command the "wait for sync to start" command?
bool areWaitingForSync = false;
if(::strcmp(argv[0], "wait-for-sync") == 0)
{
// Check that it's not in non-automatic mode, because then it'll never start
if(!autoBackup)
{
printf("ERROR: Daemon is not in automatic mode -- sync will never start!\n");
return 1;
}
// Yes... set the flag so we know what we're waiting for a sync to start
areWaitingForSync = true;
}
else
{
// No? Just send the command given plus a quit command.
std::string cmd(argv[0]);
cmd += "\nquit\n";
connection.Write(cmd.c_str(), cmd.size());
}
// Read the response
std::string line;
while(!getLine.IsEOF() && getLine.GetLine(line))
{
if(areWaitingForSync)
{
// Need to wait for the state change...
if(line == "start-sync")
{
// Send a quit command to finish nicely
connection.Write("quit\n", 5);
// And we're done
break;
}
}
else
{
// Is this an OK or error line?
if(line == "ok")
{
if(!quiet)
{
printf("Succeeded.\n");
}
break;
}
else if(line == "error")
{
printf("ERROR. (Check command spelling)\n");
returnCode = 1;
break;
}
}
}
MAINHELPER_END
return returnCode;
}
|
