restructured source code, put CMakeLists.txt in more conventional locations, and split the libraries up

src/lib/synergy/CApp.cpp

@@ -0,0 +1,346 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2002 Chris Schoeneman, Nick Bolton, Sorin Sbarnea
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ * 
+ * This package 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "CApp.h"
+#include "CLog.h"
+#include "Version.h"
+#include "ProtocolTypes.h"
+#include "CArch.h"
+#include "XBase.h"
+#include "XArch.h"
+#if SYSAPI_WIN32
+#include "CArchMiscWindows.h"
+#endif
+#include "LogOutputters.h"
+#include "XSynergy.h"
+
+#include <iostream>
+#include <stdio.h>
+
+CApp* CApp::s_instance = nullptr;
+
+CApp::CApp(CreateTaskBarReceiverFunc createTaskBarReceiver, CArgsBase* args) :
+m_createTaskBarReceiver(createTaskBarReceiver),
+m_args(args),
+m_bye(&exit),
+m_taskBarReceiver(NULL),
+m_suspended(false)
+{
+	assert(s_instance == nullptr);
+	s_instance = this;
+}
+
+CApp::~CApp()
+{
+	delete m_args;
+}
+
+CApp::CArgsBase::CArgsBase() :
+#if SYSAPI_WIN32
+m_daemon(false), // daemon mode not supported on windows (use --service)
+m_debugServiceWait(false),
+m_relaunchMode(false),
+m_pauseOnExit(false),
+#else
+m_daemon(true), // backward compatibility for unix (daemon by default)
+#endif
+#if WINAPI_XWINDOWS
+m_disableXInitThreads(false),
+#endif
+m_backend(false),
+m_restartable(true),
+m_noHooks(false),
+m_disableTray(false),
+m_pname(NULL),
+m_logFilter(NULL),
+m_logFile(NULL),
+m_display(NULL)
+{
+}
+
+CApp::CArgsBase::~CArgsBase()
+{
+}
+
+bool
+CApp::isArg(
+	int argi, int argc, const char* const* argv,
+	const char* name1, const char* name2,
+	int minRequiredParameters)
+{
+	if ((name1 != NULL && strcmp(argv[argi], name1) == 0) ||
+		(name2 != NULL && strcmp(argv[argi], name2) == 0)) {
+			// match.  check args left.
+			if (argi + minRequiredParameters >= argc) {
+				LOG((CLOG_PRINT "%s: missing arguments for `%s'" BYE,
+					argsBase().m_pname, argv[argi], argsBase().m_pname));
+				m_bye(kExitArgs);
+			}
+			return true;
+	}
+
+	// no match
+	return false;
+}
+
+bool
+CApp::parseArg(const int& argc, const char* const* argv, int& i)
+{
+	if (ARCH->parseArg(argc, argv, i)) {
+		// handled by platform util
+		return true;
+	}
+	
+	else if (isArg(i, argc, argv, "-d", "--debug", 1)) {
+		// change logging level
+		argsBase().m_logFilter = argv[++i];
+	}
+
+	else if (isArg(i, argc, argv, "-l", "--log", 1)) {
+		argsBase().m_logFile = argv[++i];
+	}
+
+	else if (isArg(i, argc, argv, "-f", "--no-daemon")) {
+		// not a daemon
+		argsBase().m_daemon = false;
+	}
+
+	else if (isArg(i, argc, argv, NULL, "--daemon")) {
+		// daemonize
+		argsBase().m_daemon = true;
+	}
+
+	else if (isArg(i, argc, argv, "-n", "--name", 1)) {
+		// save screen name
+		argsBase().m_name = argv[++i];
+	}
+
+	else if (isArg(i, argc, argv, "-1", "--no-restart")) {
+		// don't try to restart
+		argsBase().m_restartable = false;
+	}
+
+	else if (isArg(i, argc, argv, NULL, "--restart")) {
+		// try to restart
+		argsBase().m_restartable = true;
+	}
+
+	else if (isArg(i, argc, argv, "-z", NULL)) {
+		argsBase().m_backend = true;
+	}
+
+	else if (isArg(i, argc, argv, NULL, "--no-hooks")) {
+		argsBase().m_noHooks = true;
+	}
+
+	else if (isArg(i, argc, argv, "-h", "--help")) {
+		help();
+		m_bye(kExitSuccess);
+	}
+
+	else if (isArg(i, argc, argv, NULL, "--version")) {
+		version();
+		m_bye(kExitSuccess);
+	}
+
+	else {
+		// option not supported here
+		return false;
+	}
+
+	return true;
+}
+
+void
+CApp::parseArgs(int argc, const char* const* argv, int& i)
+{
+	// about these use of assert() here:
+	// previously an /analyze warning was displayed if we only used assert and
+	// did not return on failure. however, this warning does not appear to show
+	// any more (could be because new compiler args have been added).
+	// the asserts are programmer benefit only; the os should never pass 0 args,
+	// because the first is always the binary name. the only way assert would 
+	// evaluate to true, is if this parse function were implemented incorrectly,
+	// which is unlikely because it's old code and has a specific use.
+	// we should avoid using anything other than assert here, because it will
+	// look like important code, which it's not really.
+	assert(argsBase().m_pname != NULL);
+	assert(argv != NULL);
+	assert(argc >= 1);
+
+	// set defaults
+	argsBase().m_name = ARCH->getHostName();
+
+	// parse options
+	for (i = 1; i < argc; ++i) {
+
+		if (parseArg(argc, argv, i)) {
+			continue;
+		}
+
+		else if (isArg(i, argc, argv, "--", NULL)) {
+			// remaining arguments are not options
+			++i;
+			break;
+		}
+
+		else if (argv[i][0] == '-') {
+			std::cerr << "Unrecognized option: " << argv[i] << std::endl;
+			m_bye(kExitArgs);
+		}
+
+		else {
+			// this and remaining arguments are not options
+			break;
+		}
+	}
+
+#if SYSAPI_WIN32
+	// suggest that user installs as a windows service. when launched as 
+	// service, process should automatically detect that it should run in
+	// daemon mode.
+	if (argsBase().m_daemon) {
+		LOG((CLOG_ERR 
+			"The --daemon argument is not supported on Windows. "
+			"Instead, install %s as a service (--service install).", 
+			argsBase().m_pname));
+		m_bye(kExitArgs);
+	}
+#endif
+}
+
+void
+CApp::version()
+{
+	char buffer[500];
+	sprintf(
+		buffer,
+		"%s %s, protocol version %d.%d\n%s",
+		argsBase().m_pname,
+		kVersion,
+		kProtocolMajorVersion,
+		kProtocolMinorVersion,
+		kCopyright
+		);
+
+	std::cout << buffer << std::endl;
+}
+
+int
+CApp::run(int argc, char** argv)
+{
+#if SYSAPI_WIN32
+	// record window instance for tray icon, etc
+	CArchMiscWindows::setInstanceWin32(GetModuleHandle(NULL));
+#endif
+
+	CArch arch;
+
+	// install application in to arch
+	ARCH->adoptApp(this);
+
+	// create an instance of log
+	CLOG;
+	
+	// HACK: fail by default (saves us setting result in each catch)
+	int result = kExitFailed;
+
+	try {
+		result = ARCH->run(argc, argv);
+	}
+	catch (XExitApp& e) {
+		// instead of showing a nasty error, just exit with the error code.
+		// not sure if i like this behaviour, but it's probably better than 
+		// using the exit(int) function!
+		result = e.getCode();
+	}
+	catch (XBase& e) {
+		LOG((CLOG_CRIT "Exception: %s\n", e.what()));
+	}
+	catch (XArch& e) {
+		LOG((CLOG_CRIT "Init failed: %s" BYE, e.what().c_str(), argsBase().m_pname));
+	}
+	catch (std::exception& e) {
+		LOG((CLOG_CRIT "Exception: %s\n", e.what()));
+	}
+	catch (...) {
+		LOG((CLOG_CRIT "An unexpected exception occurred.\n"));
+	}
+
+	delete CLOG;
+
+	ARCH->beforeAppExit();
+	
+	return result;
+}
+
+int
+CApp::daemonMainLoop(int, const char**)
+{
+#if SYSAPI_WIN32
+	CSystemLogger sysLogger(daemonName(), false);
+#else
+	CSystemLogger sysLogger(daemonName(), true);
+#endif
+	return mainLoop();
+}
+
+void 
+CApp::setupFileLogging()
+{
+	if (argsBase().m_logFile != NULL) {
+		m_fileLog = new CFileLogOutputter(argsBase().m_logFile);
+		CLOG->insert(m_fileLog);
+		LOG((CLOG_DEBUG1 "logging to file (%s) enabled", argsBase().m_logFile));
+	}
+}
+
+void 
+CApp::loggingFilterWarning()
+{
+	if (CLOG->getFilter() > CLOG->getConsoleMaxLevel()) {
+		if (argsBase().m_logFile == NULL) {
+			LOG((CLOG_WARN "log messages above %s are NOT sent to console (use file logging)", 
+				CLOG->getFilterName(CLOG->getConsoleMaxLevel())));
+		}
+	}
+}
+
+void 
+CApp::initApp(int argc, const char** argv)
+{
+	// parse command line
+	parseArgs(argc, argv);
+
+	// setup file logging after parsing args
+	setupFileLogging();
+
+	// load configuration
+	loadConfig();
+
+	if (!argsBase().m_disableTray) {
+
+		// create a log buffer so we can show the latest message
+		// as a tray icon tooltip
+		CBufferedLogOutputter* logBuffer = new CBufferedLogOutputter(1000);
+		CLOG->insert(logBuffer, true);
+
+		// make the task bar receiver.  the user can control this app
+		// through the task bar.
+		m_taskBarReceiver = m_createTaskBarReceiver(logBuffer);
+	}
+}