mirror of
https://github.com/debauchee/barrier.git
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345 lines
7.8 KiB
C++
345 lines
7.8 KiB
C++
/*
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* synergy-plus -- mouse and keyboard sharing utility
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* Copyright (C) 2009 The Synergy+ Project
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* Copyright (C) 2002 Chris Schoeneman
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*
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* This package is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* found in the file COPYING that should have accompanied this file.
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*
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* This package 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "CApp.h"
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#include "CLog.h"
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#include "Version.h"
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#include "ProtocolTypes.h"
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#include "CArch.h"
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#include "XBase.h"
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#include "XArch.h"
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#if SYSAPI_WIN32
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#include "CArchMiscWindows.h"
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#endif
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#include "LogOutputters.h"
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#include "XSynergy.h"
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#include <iostream>
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#include <stdio.h>
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CApp* CApp::s_instance = nullptr;
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CApp::CApp(CreateTaskBarReceiverFunc createTaskBarReceiver, CArgsBase* args) :
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m_createTaskBarReceiver(createTaskBarReceiver),
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m_args(args),
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m_bye(&exit),
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m_taskBarReceiver(NULL),
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m_suspended(false)
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{
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assert(s_instance == nullptr);
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s_instance = this;
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}
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CApp::~CApp()
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{
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delete m_args;
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}
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CApp::CArgsBase::CArgsBase() :
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#if SYSAPI_WIN32
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m_daemon(false), // daemon mode not supported on windows (use --service)
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m_debugServiceWait(false),
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m_relaunchMode(false),
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m_pauseOnExit(false),
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#else
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m_daemon(true), // backward compatibility for unix (daemon by default)
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#endif
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m_backend(false),
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m_restartable(true),
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m_noHooks(false),
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m_disableTray(false),
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m_pname(NULL),
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m_logFilter(NULL),
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m_logFile(NULL),
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m_display(NULL)
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{
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}
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CApp::CArgsBase::~CArgsBase()
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{
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}
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bool
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CApp::isArg(
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int argi, int argc, const char* const* argv,
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const char* name1, const char* name2,
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int minRequiredParameters)
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{
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if ((name1 != NULL && strcmp(argv[argi], name1) == 0) ||
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(name2 != NULL && strcmp(argv[argi], name2) == 0)) {
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// match. check args left.
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if (argi + minRequiredParameters >= argc) {
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LOG((CLOG_PRINT "%s: missing arguments for `%s'" BYE,
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argsBase().m_pname, argv[argi], argsBase().m_pname));
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m_bye(kExitArgs);
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}
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return true;
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}
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// no match
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return false;
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}
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bool
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CApp::parseArg(const int& argc, const char* const* argv, int& i)
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{
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if (ARCH->parseArg(argc, argv, i)) {
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// handled by platform util
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return true;
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}
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else if (isArg(i, argc, argv, "-d", "--debug", 1)) {
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// change logging level
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argsBase().m_logFilter = argv[++i];
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}
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else if (isArg(i, argc, argv, "-l", "--log", 1)) {
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argsBase().m_logFile = argv[++i];
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}
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else if (isArg(i, argc, argv, "-f", "--no-daemon")) {
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// not a daemon
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argsBase().m_daemon = false;
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}
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else if (isArg(i, argc, argv, NULL, "--daemon")) {
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// daemonize
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argsBase().m_daemon = true;
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}
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else if (isArg(i, argc, argv, "-n", "--name", 1)) {
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// save screen name
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argsBase().m_name = argv[++i];
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}
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else if (isArg(i, argc, argv, "-1", "--no-restart")) {
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// don't try to restart
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argsBase().m_restartable = false;
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}
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else if (isArg(i, argc, argv, NULL, "--restart")) {
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// try to restart
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argsBase().m_restartable = true;
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}
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else if (isArg(i, argc, argv, "-z", NULL)) {
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argsBase().m_backend = true;
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}
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else if (isArg(i, argc, argv, NULL, "--no-hooks")) {
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argsBase().m_noHooks = true;
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}
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else if (isArg(i, argc, argv, "-h", "--help")) {
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help();
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m_bye(kExitSuccess);
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}
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else if (isArg(i, argc, argv, NULL, "--version")) {
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version();
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m_bye(kExitSuccess);
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}
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else {
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// option not supported here
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return false;
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}
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return true;
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}
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void
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CApp::parseArgs(int argc, const char* const* argv, int& i)
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{
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// about these use of assert() here:
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// previously an /analyze warning was displayed if we only used assert and
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// did not return on failure. however, this warning does not appear to show
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// any more (could be because new compiler args have been added).
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// the asserts are programmer benefit only; the os should never pass 0 args,
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// because the first is always the binary name. the only way assert would
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// evaluate to true, is if this parse function were implemented incorrectly,
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// which is unlikely because it's old code and has a specific use.
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// we should avoid using anything other than assert here, because it will
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// look like important code, which it's not really.
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assert(argsBase().m_pname != NULL);
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assert(argv != NULL);
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assert(argc >= 1);
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// set defaults
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argsBase().m_name = ARCH->getHostName();
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// parse options
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for (i = 1; i < argc; ++i) {
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if (parseArg(argc, argv, i)) {
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continue;
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}
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else if (isArg(i, argc, argv, "--", NULL)) {
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// remaining arguments are not options
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++i;
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break;
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}
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else if (argv[i][0] == '-') {
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std::cerr << "Unrecognized option: " << argv[i] << std::endl;
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m_bye(kExitArgs);
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}
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else {
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// this and remaining arguments are not options
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break;
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}
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}
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#if SYSAPI_WIN32
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// suggest that user installs as a windows service. when launched as
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// service, process should automatically detect that it should run in
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// daemon mode.
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if (argsBase().m_daemon) {
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LOG((CLOG_ERR
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"The --daemon argument is not supported on Windows. "
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"Instead, install %s as a service (--service install).",
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argsBase().m_pname));
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m_bye(kExitArgs);
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}
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#endif
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}
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void
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CApp::version()
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{
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char buffer[500];
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sprintf(
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buffer,
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"%s %s, protocol version %d.%d\n%s",
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argsBase().m_pname,
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kVersion,
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kProtocolMajorVersion,
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kProtocolMinorVersion,
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kCopyright
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);
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std::cout << buffer << std::endl;
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}
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int
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CApp::run(int argc, char** argv)
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{
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#if SYSAPI_WIN32
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// record window instance for tray icon, etc
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CArchMiscWindows::setInstanceWin32(GetModuleHandle(NULL));
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#endif
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CArch arch;
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// install application in to arch
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ARCH->adoptApp(this);
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// create an instance of log
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CLOG;
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// HACK: fail by default (saves us setting result in each catch)
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int result = kExitFailed;
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try {
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result = ARCH->run(argc, argv);
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}
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catch (XExitApp& e) {
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// instead of showing a nasty error, just exit with the error code.
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// not sure if i like this behaviour, but it's probably better than
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// using the exit(int) function!
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result = e.getCode();
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}
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catch (XBase& e) {
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LOG((CLOG_CRIT "Exception: %s\n", e.what()));
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}
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catch (XArch& e) {
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LOG((CLOG_CRIT "Init failed: %s" BYE, e.what().c_str(), argsBase().m_pname));
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}
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catch (std::exception& e) {
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LOG((CLOG_CRIT "Exception: %s\n", e.what()));
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}
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catch (...) {
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LOG((CLOG_CRIT "An unexpected exception occurred.\n"));
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}
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delete CLOG;
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ARCH->beforeAppExit();
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return result;
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}
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int
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CApp::daemonMainLoop(int, const char**)
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{
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#if SYSAPI_WIN32
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CSystemLogger sysLogger(daemonName(), false);
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#else
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CSystemLogger sysLogger(daemonName(), true);
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#endif
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return mainLoop();
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}
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void
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CApp::setupFileLogging()
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{
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if (argsBase().m_logFile != NULL) {
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m_fileLog = new CFileLogOutputter(argsBase().m_logFile);
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CLOG->insert(m_fileLog);
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LOG((CLOG_DEBUG1 "logging to file (%s) enabled", argsBase().m_logFile));
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}
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}
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void
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CApp::loggingFilterWarning()
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{
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if (CLOG->getFilter() > CLOG->getConsoleMaxLevel()) {
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if (argsBase().m_logFile == NULL) {
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LOG((CLOG_WARN "log messages above %s are NOT sent to console (use file logging)",
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CLOG->getFilterName(CLOG->getConsoleMaxLevel())));
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}
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}
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}
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void
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CApp::initApp(int argc, const char** argv)
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{
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// parse command line
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parseArgs(argc, argv);
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// setup file logging after parsing args
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setupFileLogging();
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// load configuration
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loadConfig();
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if (!argsBase().m_disableTray) {
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// create a log buffer so we can show the latest message
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// as a tray icon tooltip
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CBufferedLogOutputter* logBuffer = new CBufferedLogOutputter(1000);
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CLOG->insert(logBuffer, true);
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// make the task bar receiver. the user can control this app
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// through the task bar.
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m_taskBarReceiver = m_createTaskBarReceiver(logBuffer);
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}
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}
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