// distribution boxbackup-0.11rc2 (svn version: 2072)
//  
// Copyright (c) 2003 - 2008
//      Ben Summers and contributors.  All rights reserved.
//  
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 3. All use of this software and associated advertising materials must 
//    display the following acknowledgment:
//        This product includes software developed by Ben Summers.
// 4. The names of the Authors may not be used to endorse or promote
//    products derived from this software without specific prior written
//    permission.
// 
// [Where legally impermissible the Authors do not disclaim liability for 
// direct physical injury or death caused solely by defects in the software 
// unless it is modified by a third party.]
// 
// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//  
//  
//  
#ifndef SERVER_CONTROL_H
#define SERVER_CONTROL_H

#include "Test.h"

#ifdef WIN32

#include "WinNamedPipeStream.h"
#include "IOStreamGetLine.h"
#include "BoxPortsAndFiles.h"

static std::string sPipeName;

static void SetNamedPipeName(const std::string& rPipeName)
{
	sPipeName = rPipeName;
}

static bool SendCommands(const std::string& rCmd)
{
	WinNamedPipeStream connection;

	try
	{
		connection.Connect(sPipeName);
	}
	catch(...)
	{
		BOX_ERROR("Failed to connect to daemon control socket");
		return false;
	}

	// For receiving data
	IOStreamGetLine getLine(connection);
	
	// Wait for the configuration summary
	std::string configSummary;
	if(!getLine.GetLine(configSummary))
	{
		BOX_ERROR("Failed to receive configuration summary from daemon");
		return false;
	}

	// Was the connection rejected by the server?
	if(getLine.IsEOF())
	{
		BOX_ERROR("Server rejected the connection");
		return false;
	}

	// Decode it
	int autoBackup, updateStoreInterval, minimumFileAge, maxUploadWait;
	if(::sscanf(configSummary.c_str(), "bbackupd: %d %d %d %d", 
			&autoBackup, &updateStoreInterval, 
			&minimumFileAge, &maxUploadWait) != 4)
	{
		BOX_ERROR("Config summary didn't decode");
		return false;
	}

	std::string cmds;
	bool expectResponse;

	if (rCmd != "")
	{
		cmds = rCmd;
		cmds += "\nquit\n";
		expectResponse = true;
	}
	else
	{
		cmds = "quit\n";
		expectResponse = false;
	}
	
	connection.Write(cmds.c_str(), cmds.size());
	
	// Read the response
	std::string line;
	bool statusOk = !expectResponse;

	while (expectResponse && !getLine.IsEOF() && getLine.GetLine(line))
	{
		// Is this an OK or error line?
		if (line == "ok")
		{
			statusOk = true;
		}
		else if (line == "error")
		{
			BOX_ERROR(rCmd);
			break;
		}
		else
		{
			BOX_WARNING("Unexpected response to command '" <<
				rCmd << "': " << line)
		}
	}
	
	return statusOk;
}

inline bool HUPServer(int pid)
{
	return SendCommands("reload");
}

inline bool KillServerInternal(int pid)
{
	HANDLE hProcess = OpenProcess(PROCESS_TERMINATE, false, pid);
	if (hProcess == NULL)
	{
		BOX_ERROR("Failed to open process " << pid << ": " <<
			GetErrorMessage(GetLastError()));
		return false;
	}

	if (!TerminateProcess(hProcess, 1))
	{
		BOX_ERROR("Failed to terminate process " << pid << ": " <<
			GetErrorMessage(GetLastError()));
		CloseHandle(hProcess);
		return false;
	}

	CloseHandle(hProcess);
	return true;
}

#else // !WIN32

inline bool HUPServer(int pid)
{
	if(pid == 0) return false;
	return ::kill(pid, SIGHUP) == 0;
}

inline bool KillServerInternal(int pid)
{
	if(pid == 0 || pid == -1) return false;
	bool killed = (::kill(pid, SIGTERM) == 0);
	if (!killed)
	{
		BOX_ERROR("Failed to kill process " << pid << ": " <<
			strerror(errno));
	}
	TEST_THAT(killed);
	return killed;
}

#endif // WIN32

inline bool KillServer(int pid)
{
	if (!KillServerInternal(pid))
	{
		return false;
	}

	for (int i = 0; i < 30; i++)
	{
		if (i == 0) 
		{
			printf("Waiting for server to die: ");
		}

		printf(".");
		fflush(stdout);

		if (!ServerIsAlive(pid)) break;
		::sleep(1);
		if (!ServerIsAlive(pid)) break;
	}

	if (!ServerIsAlive(pid))
	{
		printf(" done.\n");
	}
	else
	{
		printf(" failed!\n");
	}

	fflush(stdout);

	return !ServerIsAlive(pid);
}

#endif // SERVER_CONTROL_H