C++ PathName::c_str方法代码示例

bool PathUtils::isSymLink(const Firebird::PathName& path)
{
	struct stat st, lst;
	if (stat(path.c_str(), &st) != 0)
		return false;
	if (lstat(path.c_str(), &lst) != 0)
		return false;
	return st.st_ino != lst.st_ino;
}

pid_t UTIL_start_process(const char* process, const char* process2, char** argv, const char* prog_name)
{
/**************************************
 *
 *      U T I L _ s t a r t _ p r o c e s s
 *
 **************************************
 *
 * Functional description
 *
 *     This function is used to create the specified process,
 *
 * Returns Codes:
 *	-1		Process spawn failed.
 *	pid		Successful creation. PID is returned.
 *
 *     Note: Make sure that the argument list ends with a null
 *     and the first argument is large enough to hold the complete
 *     expanded process name. (MAXPATHLEN recommended)
 *
 **************************************/
	fb_assert(process != NULL);
	fb_assert(argv != NULL);

	// prepend Firebird home directory to the program name
	// choose correct (super/superclassic) image - to be removed in 3.0
	Firebird::PathName string = fb_utils::getPrefix(fb_utils::FB_DIR_SBIN, process);
	if (access(string.c_str(), X_OK) < 0) {
		string = fb_utils::getPrefix(fb_utils::FB_DIR_SBIN, process2);
	}
	if (prog_name) {
		gds__log("%s: guardian starting %s\n", prog_name, string.c_str());
	}

	// add place in argv for visibility to "ps"
	strcpy(argv[0], string.c_str());
#if (defined SOLARIS)
	pid_t pid = fork1();
	if (!pid)
	{
		if (execv(string.c_str(), argv) == -1) {
			//ib_fprintf(ib_stderr, "Could not create child process %s with args %s\n", string, argv);
		}
		exit(FINI_ERROR);
	}

#else

	pid_t pid = vfork();
	if (!pid)
	{
		execv(string.c_str(), argv);
		_exit(FINI_ERROR);
	}
#endif
	return (pid);
}

bool ModuleLoader::isLoadableModule(const Firebird::PathName& module)
{
	struct stat sb;
	if (-1 == stat(module.c_str(), &sb))
		return false;
	if ( ! (sb.st_mode & S_IFREG) )		// Make sure it is a plain file
		return false;
	if ( -1 == access(module.c_str(), R_OK | X_OK))
		return false;
	return true;
}

// Probably file arrived on the disk
bool notifyDatabaseName(const Firebird::PathName& file)
{
#ifdef HAVE_ID_BY_NAME
	// notifyDatabaseName typically causes changes in aliasesConf()
	// cause it's called only from Config created for missing database.
	// Therefore always take write lock at once.
	WriteLockGuard guard(aliasesConf().rwLock, "notifyDatabaseName");

	DbName* db = aliasesConf().dbHash.lookup(file);
	if (!db)
		return true;
	if (db->id)
		return true;

	UCharBuffer id;
	os_utils::getUniqueFileId(file.c_str(), id);
	if (id.hasData())
	{
		aliasesConf().linkId(db, id);
		return true;
	}
#endif

	return false;
}

void LEX_init( void *file)
{
/**************************************
 *
 *	L E X _ i n i t
 *
 **************************************
 *
 * Functional description
 *	Initialize for lexical scanning.  While we're at it, open a
 *	scratch trace file to keep all input.
 *
 **************************************/
	const Firebird::PathName filename = Firebird::TempFile::create(SCRATCH);
	strcpy(trace_file_name, filename.c_str());
	trace_file = fopen(trace_file_name, "w+b");
	if (!trace_file)
	{
		DDL_err(276);
		/* msg 276: couldn't open scratch file */
	}

	input_file = (FILE*) file;
	DDL_char = DDL_buffer;
	dudleyGlob.DDL_token.tok_position = 0;
	dudleyGlob.DDL_description = false;
	dudleyGlob.DDL_line = 1;
}

// moves DB path information (from limbo transaction) to another buffer
void getDbPathInfo(unsigned int& itemsLength, const unsigned char*& items,
	unsigned int& bufferLength, unsigned char*& buffer,
	Firebird::Array<unsigned char>& newItemsBuffer, const Firebird::PathName& dbpath)
{
	if (itemsLength && items)
	{
		const unsigned char* ptr = (const unsigned char*) memchr(items, fb_info_tra_dbpath, itemsLength);
		if (ptr)
		{
			newItemsBuffer.add(items, itemsLength);
			newItemsBuffer.remove(ptr - items);
			items = newItemsBuffer.begin();
			--itemsLength;

			unsigned int len = dbpath.length();
			if (len + 3 > bufferLength)
			{
				len = bufferLength - 3;
			}
			bufferLength -= (len + 3);
			*buffer++ = fb_info_tra_dbpath;
			*buffer++ = len;
			*buffer++ = len >> 8;
			memcpy(buffer, dbpath.c_str(), len);
			buffer += len;
		}
	}
}

bool FileObject::renameFile(const Firebird::PathName new_filename)
{
	if (append_mutex != INVALID_HANDLE_VALUE)
	{
		if (WaitForSingleObject(append_mutex, INFINITE) != WAIT_OBJECT_0)
			system_call_failed::raise("WaitForSingleObject");
	}

	if (!MoveFile(filename.c_str(), new_filename.c_str()))
	{
		DWORD rename_err = GetLastError();
		if (rename_err == ERROR_ALREADY_EXISTS || rename_err == ERROR_FILE_NOT_FOUND)
		{
			// Another process renames our file just now. Open it again.
			reopen();
			return false;
		}

		if (append_mutex != INVALID_HANDLE_VALUE)
			ReleaseMutex(append_mutex);

		fatal_exception::raiseFmt("IO error (%d) renaming file: %s",
			rename_err,
			filename.c_str());
	}
	else
		reopen();

	return true;
}

void LEX_init()
{
/**************************************
 *
 *	L E X _ i n i t
 *
 **************************************
 *
 * Functional description
 *	Initialize for lexical scanning.  While we're at it, open a
 *	scratch trace file to keep all input.
 *
 **************************************/
	const Firebird::PathName filename = TempFile::create(SCRATCH);
	strcpy(trace_file_name, filename.c_str());
	trace_file = fopen(trace_file_name, "w+b");
#ifdef UNIX
	unlink(trace_file_name);
#endif
	if (!trace_file)
		IBERROR(61);			// Msg 61 couldn't open scratch file

	QLI_token = (qli_tok*) ALLOCPV(type_tok, MAXSYMLEN);

	QLI_line = (qli_line*) ALLOCPV(type_line, 0);
	QLI_line->line_size = sizeof(QLI_line->line_data);
	QLI_line->line_ptr = QLI_line->line_data;
	QLI_line->line_type = line_stdin;
	QLI_line->line_source_file = stdin;

	QLI_semi = false;
	input_file = stdin;
	HSH_init();
}

void ClntAuthBlock::extractDataFromPluginTo(Firebird::ClumpletWriter& user_id)
{
	// Add user login name
	if (cliOrigUserName.hasData())
	{
		HANDSHAKE_DEBUG(fprintf(stderr, "Cli: extractDataFromPluginTo: cliOrigUserName=%s\n",
			cliOrigUserName.c_str()));
		user_id.insertString(CNCT_login, cliOrigUserName);
	}

	// Add plugin name
	Firebird::PathName pluginName = getPluginName();
	if (pluginName.hasData())
	{
		HANDSHAKE_DEBUG(fprintf(stderr, "Cli: extractDataFromPluginTo: pluginName=%s\n", pluginName.c_str()));
		user_id.insertPath(CNCT_plugin_name, pluginName);
	}

	// Add plugin list
	if (pluginList.hasData())
	{
		user_id.insertPath(CNCT_plugin_list, pluginList);
	}

	// This is specially tricky field - user_id is limited to 255 bytes per entry,
	// and we have no ways to override this limit cause it can be sent to any version server.
	// Therefore divide data into 254-byte parts, leaving first byte for the number of that part.
	// This appears more reliable than put them in strict order.
	addMultiPartConnectParameter(dataFromPlugin, user_id, CNCT_specific_data);

	// Client's wirecrypt requested level
	user_id.insertInt(CNCT_client_crypt, clntConfig->getWireCrypt(WC_CLIENT));
}

void LEX_edit(SLONG start, SLONG stop)
{
/**************************************
 *
 *	L E X _ e d i t
 *
 **************************************
 *
 * Functional description
 *	Dump the last full statement into a scratch file, then
 *	push the scratch file on the input stack.
 *
 **************************************/
	const Firebird::PathName filename = TempFile::create(SCRATCH);
	FILE* scratch = fopen(filename.c_str(), "w+b");
	if (!scratch)
		IBERROR(61);			// Msg 61 couldn't open scratch file

#ifdef WIN_NT
	stop--;
#endif

	if (fseek(trace_file, start, 0))
	{
		fseek(trace_file, 0, 2);
		IBERROR(59);			// Msg 59 fseek failed
	}

	while (++start <= stop)
	{
		const SSHORT c = getc(trace_file);
		if (c == EOF)
			break;
		putc(c, scratch);
	}

	fclose(scratch);

	if (gds__edit(filename.c_str(), TRUE))
		LEX_push_file(filename.c_str(), true);

	unlink(filename.c_str());

	fseek(trace_file, 0, 2);
}

ConfigFile::ConfigFile(MemoryPool& p, const Firebird::PathName& file, USHORT fl, ConfigCache* cache)
	: AutoStorage(p),
	  parameters(getPool()),
	  flags(fl),
	  includeLimit(0),
	  filesCache(cache)
{
	MainStream s(file.c_str(), flags & ERROR_WHEN_MISS);
	parse(&s);
}

inline void setPrefixIfNotEmpty(const Firebird::PathName& prefix, SSHORT arg_type)
{
/**************************************
 *
 *         s e t P r e f i x I f N o t E m p t y
 *
 **************************************
 *
 * Functional description
 *      Helper for ISC_set_prefix
 *
 **************************************/
	if (prefix.hasData())
	{
		// ignore here return value of gds__get_prefix():
		// it will never fail with our good arguments
		gds__get_prefix(arg_type, prefix.c_str());
	}
}

//.........这里部分代码省略.........
	const char* configDir[] = {
		FB_BINDIR, FB_SBINDIR, FB_CONFDIR, FB_LIBDIR, FB_INCDIR, FB_DOCDIR, FB_UDFDIR, FB_SAMPLEDIR,
		FB_SAMPLEDBDIR, FB_HELPDIR, FB_INTLDIR, FB_MISCDIR, FB_SECDBDIR, FB_MSGDIR, FB_LOGDIR,
		FB_GUARDDIR, FB_PLUGDIR
	};

	fb_assert(FB_NELEM(configDir) == Firebird::IConfigManager::DIR_COUNT);
	fb_assert(prefType < Firebird::IConfigManager::DIR_COUNT);

	if (! bootBuild())
	{
		if (prefType != Firebird::IConfigManager::DIR_CONF &&
			prefType != Firebird::IConfigManager::DIR_MSG &&
			configDir[prefType][0])
		{
			// Value is set explicitly and is not environment overridable
			PathUtils::concatPath(s, configDir[prefType], name);
			return s;
		}
	}

	switch(prefType)
	{
		case Firebird::IConfigManager::DIR_BIN:
		case Firebird::IConfigManager::DIR_SBIN:
#ifdef WIN_NT
			s = "";
#else
			s = "bin";
#endif
			break;

		case Firebird::IConfigManager::DIR_CONF:
		case Firebird::IConfigManager::DIR_LOG:
		case Firebird::IConfigManager::DIR_GUARD:
		case Firebird::IConfigManager::DIR_SECDB:
			s = "";
			break;

		case Firebird::IConfigManager::DIR_LIB:
#ifdef WIN_NT
			s = "";
#else
			s = "lib";
#endif
			break;

		case Firebird::IConfigManager::DIR_PLUGINS:
			s = "plugins";
			break;

		case Firebird::IConfigManager::DIR_INC:
			s = "include";
			break;

		case Firebird::IConfigManager::DIR_DOC:
			s = "doc";
			break;

		case Firebird::IConfigManager::DIR_UDF:
			s = "UDF";
			break;

		case Firebird::IConfigManager::DIR_SAMPLE:
			s = "examples";
			break;

		case Firebird::IConfigManager::DIR_SAMPLEDB:
			s = "examples/empbuild";
			break;

		case Firebird::IConfigManager::DIR_HELP:
			s = "help";
			break;

		case Firebird::IConfigManager::DIR_INTL:
			s = "intl";
			break;

		case Firebird::IConfigManager::DIR_MISC:
			s = "misc";
			break;

		case Firebird::IConfigManager::DIR_MSG:
			gds__prefix_msg(tmp, name);
			return tmp;

		default:
			fb_assert(false);
			break;
	}

	if (s.hasData() && name[0])
	{
		s += '/';
	}
	s += name;
	gds__prefix(tmp, s.c_str());
	return tmp;
}

THREAD_ENTRY_DECLARE start_and_watch_server(THREAD_ENTRY_PARAM)
{
/**************************************
 *
 *	s t a r t _ a n d _ w a t c h _ s e r v e r
 *
 **************************************
 *
 * Functional description
 *
 *      This function is where the server process is created and
 * the thread waits for this process to exit.
 *
 **************************************/
	Firebird::ContextPoolHolder threadContext(getDefaultMemoryPool());

	HANDLE procHandle = NULL;
	bool done = true;
	const UINT error_mode = SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX |
		SEM_NOOPENFILEERRORBOX | SEM_NOALIGNMENTFAULTEXCEPT;
	SC_HANDLE hScManager = 0, hService = 0;

	// get the guardian startup information
	const short option = Config::getGuardianOption();

	char prefix_buffer[MAXPATHLEN];
	GetModuleFileName(NULL, prefix_buffer, sizeof(prefix_buffer));
	Firebird::PathName path = prefix_buffer;
	path = path.substr(0, path.rfind(PathUtils::dir_sep) + 1) + FBSERVER;
	path = "\"" + path + "\"";
	Firebird::PathName prog_name = path + " -a -n";

	// if the guardian is set to FOREVER then set the error mode
	UINT old_error_mode = 0;
	if (option == START_FOREVER)
		old_error_mode = SetErrorMode(error_mode);

	// Spawn the new process
	do {
		SERVICE_STATUS ServiceStatus;
		char out_buf[1024];
		BOOL success;
		int error = 0;

		if (service_flag)
		{
			if (hService)
			{
				while ((QueryServiceStatus(hService, &ServiceStatus) == TRUE) &&
					(ServiceStatus.dwCurrentState != SERVICE_STOPPED))
				{
					Sleep(500);
				}
			}

			procHandle = CreateMutex(NULL, FALSE, mutex_name->c_str());

			// start as a service.  If the service can not be found or
			// fails to start, close the handle to the mutex and set
			// success = FALSE
			if (!hScManager)
				hScManager = OpenSCManager(NULL, NULL, GENERIC_READ);
			if (!hService)
			{
				hService = OpenService(hScManager, remote_name->c_str(),
					GENERIC_READ | GENERIC_EXECUTE);
			}
			success = StartService(hService, 0, NULL);
			if (success != TRUE)
				error = GetLastError();
			// if the server is already running, then inform it that it should
			// open the guardian mutex so that it may be governed.
			if (!error || error == ERROR_SERVICE_ALREADY_RUNNING)
			{
				// Make sure that it is actually ready to receive commands.
				// If we were the one who started it, then it will need a few
				// seconds to get ready.
				while ((QueryServiceStatus(hService, &ServiceStatus) == TRUE) &&
					(ServiceStatus.dwCurrentState != SERVICE_RUNNING))
				{
					Sleep(500);
				}
				ControlService(hService, SERVICE_CREATE_GUARDIAN_MUTEX, &ServiceStatus);
				success = TRUE;
			}
		}
		else
		{
			HWND hTmpWnd = FindWindow(szClassName, szWindowName);
			if (hTmpWnd == NULL)
			{
				STARTUPINFO si;
				SECURITY_ATTRIBUTES sa;
				PROCESS_INFORMATION pi;
				ZeroMemory(&si, sizeof(si));
				si.cb = sizeof(si);
				sa.nLength = sizeof(sa);
				sa.lpSecurityDescriptor = NULL;
				sa.bInheritHandle = TRUE;
				success = CreateProcess(NULL, const_cast<char*>(prog_name.c_str()),
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	fb_utils::init_status(status_vector);

	fb_shutdown_callback(0, wait_threads, fb_shut_finish, NULL);

	if (connection_handle != INVALID_HANDLE_VALUE)
	{
		rem_port* port = 0;

		if (server_flag & SRVR_inet)
		{
			port = INET_reconnect((SOCKET) connection_handle, status_vector);

			if (port)
			{
				SRVR_multi_thread(port, server_flag);
				port = NULL;
			}
		}
		else if (server_flag & SRVR_wnet)
			port = WNET_reconnect(connection_handle, status_vector);
		else if (server_flag & SRVR_xnet)
			port = XNET_reconnect((ULONG) connection_handle, status_vector);

		if (port) {
			service_connection(port);
		}
		else if (status_vector[1])
			gds__log_status(0, status_vector);

		fb_shutdown(5 * 1000 /*5 seconds*/, fb_shutrsn_no_connection);
	}
	else if (!(server_flag & SRVR_non_service))
	{
		Firebird::string service_name;
		service_name.printf(REMOTE_SERVICE, instance);

		CNTL_init(start_connections_thread, instance);

		const SERVICE_TABLE_ENTRY service_table[] =
		{
			{const_cast<char*>(service_name.c_str()), CNTL_main_thread},
			{NULL, NULL}
		};

		// BRS There is a error in MinGW (3.1.0) headers
		// the parameter of StartServiceCtrlDispatcher is declared const in msvc headers
#if defined(MINGW)
		if (!StartServiceCtrlDispatcher(const_cast<SERVICE_TABLE_ENTRY*>(service_table)))
		{
#else
		if (!StartServiceCtrlDispatcher(service_table))
		{
#endif
			if (GetLastError() != ERROR_CALL_NOT_IMPLEMENTED) {
				CNTL_shutdown_service("StartServiceCtrlDispatcher failed");
			}
			server_flag |= SRVR_non_service;
		}
	}
	else
	{
		start_connections_thread(0);
		nReturnValue = WINDOW_main(hThisInst, nWndMode, server_flag);
	}

#ifdef DEBUG_GDS_ALLOC
	// In Debug mode - this will report all server-side memory leaks
	// due to remote access

	//gds_alloc_report(0, __FILE__, __LINE__);
	Firebird::PathName name = fb_utils::getPrefix(fb_utils::FB_DIR_LOG, "memdebug.log");
	FILE* file = fopen(name.c_str(), "w+t");
	if (file)
	{
		fprintf(file, "Global memory pool allocated objects\n");
		getDefaultMemoryPool()->print_contents(file);
		fclose(file);
	}
#endif

	return nReturnValue;
}


THREAD_ENTRY_DECLARE process_connection_thread(THREAD_ENTRY_PARAM arg)
{
/**************************************
 *
 *      p r o c e s s _ c o n n e c t i o n _ t h r e a d
 *
 **************************************
 *
 * Functional description
 *
 **************************************/
	ThreadCounter counter;

	service_connection((rem_port*) arg);
	return 0;
}