C++ string::c_str方法代码示例

	void grantRevokeAdmin(Firebird::IUser* user, bool ignoreRevoke = false)
	{
		if (!user->admin()->entered())
		{
			return;
		}

		Firebird::LocalStatus s;
		Firebird::CheckStatusWrapper statusWrapper(&s);

		Firebird::string userName(user->userName()->get());
		prepareName(userName, '"');

		Firebird::string sql;
		if (user->admin()->get() == 0)
		{
			Firebird::string userName2(user->userName()->get());
			prepareName(userName2, '\'');
			Firebird::string selGrantor;
			selGrantor.printf("SELECT RDB$GRANTOR FROM RDB$USER_PRIVILEGES "
				"WHERE RDB$USER = '%s' AND RDB$RELATION_NAME = '%s' AND RDB$PRIVILEGE = 'M'",
				userName2.c_str(), ADMIN_ROLE);
			Message out;
			Field<Varying> grantor(out, MAX_SQL_IDENTIFIER_SIZE);
			Firebird::IResultSet* curs = att->openCursor(&statusWrapper, tra, selGrantor.length(),
				selGrantor.c_str(), SQL_DIALECT_V6, NULL, NULL, out.getMetadata(), NULL, 0);
			check(&statusWrapper);

			bool hasGrant = curs->fetchNext(&statusWrapper, out.getBuffer()) == Firebird::IStatus::RESULT_OK;
			curs->close(&statusWrapper);
			check(&statusWrapper);

			if (hasGrant)
			{
				selGrantor = grantor;
				prepareName(selGrantor, '"');

				sql.printf("REVOKE %s FROM \"%s\" GRANTED BY \"%s\"",
					ADMIN_ROLE, userName.c_str(), selGrantor.c_str());
			}
			else
			{
				if (ignoreRevoke)
					return;

				// no grant - let engine produce correct error message
				sql.printf("REVOKE %s FROM \"%s\"", ADMIN_ROLE, userName.c_str());
			}
		}
		else
		{
			sql.printf("GRANT %s TO \"%s\"", ADMIN_ROLE, userName.c_str());
		}

		att->execute(&statusWrapper, tra, sql.length(), sql.c_str(),
			SQL_DIALECT_V6, NULL, NULL, NULL, NULL);
		check(&statusWrapper);
	}

static void alice_output(bool error, const SCHAR* format, ...)
{

	AliceGlobals* tdgbl = AliceGlobals::getSpecific();

	va_list arglist;
	va_start(arglist, format);
	Firebird::string buf;
	buf.vprintf(format, arglist);
	va_end(arglist);

	if (error)
		tdgbl->uSvc->outputError(buf.c_str());
	else
		tdgbl->uSvc->outputVerbose(buf.c_str());
}

ModuleLoader::Module* ModuleLoader::loadModule(ISC_STATUS* status, const Firebird::PathName& modPath)
{
	void* module = dlopen(modPath.nullStr(), FB_RTLD_MODE);
	if (module == NULL)
	{
		if (status)
		{
			status[0] = isc_arg_gds;
			status[1] = isc_random;
			status[2] = isc_arg_string;
			status[3] = (ISC_STATUS) dlerror();
			status[4] = isc_arg_end;
		}

		return 0;
	}

#ifdef DEBUG_THREAD_IN_UNLOADED_LIBRARY
	Firebird::string command;
	command.printf("echo +++ %s +++ >>/tmp/fbmaps;date >> /tmp/fbmaps;cat /proc/%d/maps >>/tmp/fbmaps",
		modPath.c_str(), getpid());
	system(command.c_str());
#endif

	return FB_NEW_POOL(*getDefaultMemoryPool()) DlfcnModule(*getDefaultMemoryPool(), modPath, module);
}

bool readenv(const char* env_name, Firebird::PathName& env_value)
{
	Firebird::string result;
	bool rc = readenv(env_name, result);
	env_value.assign(result.c_str(), result.length());
	return rc;
}

TracePlugin* FB_CARG TraceFactoryImpl::trace_create(Firebird::IStatus* status, TraceInitInfo* initInfo)
{
	Firebird::MasterInterfacePtr master;
	const char* dbname = NULL;
	try
	{
		master->upgradeInterface(initInfo, FB_TRACE_INIT_INFO_VERSION, upInfo);

		dbname = initInfo->getDatabaseName();
		if (!dbname)
			dbname = "";

		TracePluginConfig config;
		TraceCfgReader::readTraceConfiguration(initInfo->getConfigText(), dbname, config);

		TraceDatabaseConnection* connection = initInfo->getConnection();
		if (connection)
			master->upgradeInterface(connection, FB_TRACE_CONNECTION_VERSION, upInfo);

		if (!config.enabled ||
			(config.connection_id && connection &&
				(connection->getConnectionID() != SLONG(config.connection_id))))
		{
			return NULL; // Plugin is not needed, no error happened.
		}

		Firebird::AutoPtr<TraceLogWriter, Firebird::SimpleRelease<TraceLogWriter> >
			logWriter(initInfo->getLogWriter());

		if (logWriter)
			config.log_filename = "";

		return new TracePluginImpl(config, initInfo);	// Everything is ok, we created a plugin

	}
	catch (Firebird::Exception& ex)
	{
		// put error into trace log
		TraceLogWriter* logWriter = initInfo->getLogWriter();
		if (logWriter)
		{
			master->upgradeInterface(logWriter, FB_TRACE_LOG_WRITER_VERSION, upInfo);
			const char* strEx = TracePluginImpl::marshal_exception(ex);
			Firebird::string err;
			if (dbname)
				err.printf("Error creating trace session for database \"%s\":\n%s\n", dbname, strEx);
			else
				err.printf("Error creating trace session for service manager attachment:\n%s\n", strEx);

			logWriter->write(err.c_str(), err.length());
			logWriter->release();
		}
		else
			ex.stuffException(status);
	}

	return NULL;
}

void ExecuteStatement::open(thread_db* tdbb, jrd_nod* sql, SSHORT nVars, bool singleton)
{
    SET_TDBB(tdbb);

    Attachment* const attachment = tdbb->getAttachment();
    jrd_tra* transaction = tdbb->getTransaction();

    if (transaction->tra_callback_count >= MAX_CALLBACKS)
    {
        ERR_post(Arg::Gds(isc_exec_sql_max_call_exceeded));
    }

    varCount = nVars;
    singleMode = singleton;

    Firebird::string sqlText;
    getString(tdbb, sqlText, EVL_expr(tdbb, sql), tdbb->getRequest());
    memcpy(startOfSqlOperator, sqlText.c_str(), sizeof(startOfSqlOperator) - 1);
    startOfSqlOperator[sizeof(startOfSqlOperator) - 1] = 0;

    transaction->tra_callback_count++;

    try
    {
        stmt = attachment->prepareStatement(tdbb, *tdbb->getDefaultPool(), transaction, sqlText);

        if (stmt->getResultCount() == 0)
        {
            delete stmt;
            stmt = NULL;

            ERR_post(Arg::Gds(isc_exec_sql_invalid_req) << Arg::Str(startOfSqlOperator));
        }

        if (stmt->getResultCount() != varCount)
        {
            delete stmt;
            stmt = NULL;

            ERR_post(Arg::Gds(isc_wronumarg));
        }

        resultSet = stmt->executeQuery(tdbb, transaction);

        fb_assert(transaction == tdbb->getTransaction());
    }
    catch (const Firebird::Exception&)
    {
        transaction->tra_callback_count--;
        throw;
    }

    transaction->tra_callback_count--;
}

void Stream::format(const char *pattern, ...)
{
	Firebird::string temp;

	va_list		args;
	va_start	(args, pattern);
	temp.vprintf(pattern, args);
	va_end(args);

	putSegment (temp.c_str());
}

void* DlfcnModule::findSymbol(const Firebird::string& symName)
{
	void* result = dlsym(module, symName.c_str());
	if (result == NULL)
	{
		Firebird::string newSym ='_' + symName;
		result = dlsym(module, newSym.c_str());
	}
	return result;

}

void iscDbLogStatus(const TEXT* text, Firebird::IStatus* status)
{
	const TEXT* hdr = NULL;
	Firebird::string buf;
	if (text)
	{
		buf = "Database: ";
		buf += text;
		hdr = buf.c_str();
	}
	iscLogStatus(hdr, status);
}

// create directory for lock files and set appropriate access rights
void createLockDirectory(const char* pathname)
{
	static bool errorLogged = false;

	DWORD attr = GetFileAttributes(pathname);
	DWORD errcode = 0;
	if (attr == INVALID_FILE_ATTRIBUTES)
	{
		errcode = GetLastError();
		if (errcode == ERROR_FILE_NOT_FOUND)
		{
			if (!CreateDirectory(pathname, NULL)) {
				errcode = GetLastError();
			}
			else
			{
				adjustLockDirectoryAccess(pathname);

				attr = GetFileAttributes(pathname);
				if (attr == INVALID_FILE_ATTRIBUTES) {
					errcode = GetLastError();
				}
			}
		}
	}

	Firebird::string err;
	if (attr == INVALID_FILE_ATTRIBUTES)
	{
		err.printf("Can't create directory \"%s\". OS errno is %d", pathname, errcode);
		if (!errorLogged)
		{
			errorLogged = true;
			gds__log(err.c_str());
		}
		Firebird::fatal_exception::raise(err.c_str());
	}

	if (!(attr & FILE_ATTRIBUTE_DIRECTORY))
	{
		err.printf("Can't create directory \"%s\". File with same name already exists", pathname);
		if (!errorLogged)
		{
			errorLogged = true;
			gds__log(err.c_str());
		}
		Firebird::fatal_exception::raise(err.c_str());
	}

	if (attr & FILE_ATTRIBUTE_READONLY)
	{
		err.printf("Can't create directory \"%s\". Readonly directory with same name already exists", pathname);
		if (!errorLogged)
		{
			errorLogged = true;
			gds__log(err.c_str());
		}
		Firebird::fatal_exception::raise(err.c_str());
	}
}

ISC_STATUS API_ROUTINE isc_delete_user(ISC_STATUS* status, const USER_SEC_DATA* input_user_data)
{
/**************************************
 *
 *      i s c _ d e l e t e _ u s e r
 *
 **************************************
 *
 * Functional description
 *      Deletes a user from the server's security
 *	    database.
 *      Return 0 if the user was deleted
 *
 *	    Return > 0 if any error occurs.
 *
 **************************************/
	Auth::StackUserData userInfo;
	userInfo.op = Auth::DEL_OPER;
	Firebird::LocalStatus s;
	Firebird::CheckStatusWrapper statusWrapper(&s);

	if (input_user_data->user_name)
	{
		Firebird::string work = input_user_data->user_name;
		if (work.length() > USERNAME_LENGTH) {
			return user_error(status, isc_usrname_too_long);
		}

		Firebird::string::size_type l = work.find(' ');
		if (l != Firebird::string::npos) {
			work.resize(l);
		}

		userInfo.user.set(&statusWrapper, work.c_str());
		Firebird::check(&statusWrapper);
		userInfo.user.setEntered(&statusWrapper, 1);
		Firebird::check(&statusWrapper);
	}
	else {
		return user_error(status, isc_usrname_required);
	}

	return executeSecurityCommand(status, input_user_data, userInfo);
}

// static function
bool Switches::matchSwitch(const Firebird::string& sw, const char* target, size_t n)
{
/**************************************
 *
 *	m a t c h S w i t c h
 *
 **************************************
 *
 * Functional description
 *	Returns true if switch matches target
 *
 **************************************/
	if (n < sw.length())
	{
		return false;
	}
	n = sw.length();
	return memcmp(sw.c_str(), target, n) == 0;
}

ModuleLoader::Module* ModuleLoader::loadModule(const Firebird::PathName& modPath)
{
	void* module = dlopen(modPath.nullStr(), FB_RTLD_MODE);
	if (module == NULL)
	{
#ifdef DEV_BUILD
//		gds__log("loadModule failed loading %s: %s", modPath.c_str(), dlerror());
#endif
		return 0;
	}

#ifdef DEBUG_THREAD_IN_UNLOADED_LIBRARY
	Firebird::string command;
	command.printf("echo +++ %s +++ >>/tmp/fbmaps;date >> /tmp/fbmaps;cat /proc/%d/maps >>/tmp/fbmaps",
		modPath.c_str(), getpid());
	system(command.c_str());
#endif

	return FB_NEW_POOL(*getDefaultMemoryPool()) DlfcnModule(module);
}

void* DlfcnModule::findSymbol(const Firebird::string& symName)
{
	void* result = dlsym(module, symName.c_str());
	if (!result)
	{
		Firebird::string newSym = '_' + symName;

		result = dlsym(module, newSym.c_str());
	}

#ifdef HAVE_DLADDR
	if (!PathUtils::isRelative(fileName))
	{
		Dl_info info;
		if (!dladdr(result, &info))
			return NULL;
		if (fileName != info.dli_fname)
			return NULL;
	}
#endif

	return result;
}

//.........这里部分代码省略.........
    }

	const SC_HANDLE manager = OpenSCManager(NULL, NULL, dwScmManagerAccess);
	if (manager == NULL)
	{
		svc_error(GetLastError(), "OpenSCManager", NULL);
		exit(FINI_ERROR);
	}

	USHORT status, status2;
	SC_HANDLE service;

	Firebird::string guard_service_name, guard_display_name;
	guard_service_name.printf(ISCGUARD_SERVICE, instance);
	guard_display_name.printf(ISCGUARD_DISPLAY_NAME, instance);

	Firebird::string remote_service_name, remote_display_name;
	remote_service_name.printf(REMOTE_SERVICE, instance);
	remote_display_name.printf(REMOTE_DISPLAY_NAME, instance);

	Firebird::string switches;
	if (strchr(instance, ' '))
		switches.printf("-s \"%s\"", instance);
	else
		switches.printf("-s %s", instance);

	switch (sw_command)
	{
		case COMMAND_INSTALL:
			// First, lets do the guardian, if it has been specified
			if (sw_guardian)
			{
				status = SERVICES_install(manager,
										  guard_service_name.c_str(),
										  guard_display_name.c_str(),
										  ISCGUARD_DISPLAY_DESCR,
										  ISCGUARD_EXECUTABLE,
										  directory,
										  switches.c_str(),
										  NULL,
										  sw_startup,
										  username,
										  password,
										  false, // interactive_mode
										  true, // auto_restart
										  svc_error);

				status2 = FB_SUCCESS;

				if (username != 0)
				{
					status2 =
						SERVICES_grant_access_rights(guard_service_name.c_str(), username, svc_error);
				}

				if (status == FB_SUCCESS && status2 == FB_SUCCESS)
				{
					printf("Service \"%s\" successfully created.\n", guard_display_name.c_str());
				}

				// Set sw_startup to manual in preparation for install the service
				sw_startup = STARTUP_DEMAND;
			}

			// do the install of the server
			status = SERVICES_install(manager,