CLOUD: Cleanup in Handlers

Simplified some stuff here and there by using HandlerUtils static
methods.

11 files changed, 57 insertions, 285 deletions

diff --git a/backends/networking/sdl_net/handlers/basehandler.cpp b/backends/networking/sdl_net/handlers/basehandler.cpp
deleted file mode 100644
index da90bb4296..0000000000
--- a/backends/networking/sdl_net/handlers/basehandler.cpp
+++ /dev/null
@@ -1,100 +0,0 @@
-/* ScummVM - Graphic Adventure Engine
-*
-* ScummVM is the legal property of its developers, whose names
-* are too numerous to list here. Please refer to the COPYRIGHT
-* file distributed with this source distribution.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version 2
-* of the License, or (at your option) any later version.
-*
-* This program 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, write to the Free Software
-* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-*
-*/
-
-#include "backends/networking/sdl_net/handlers/basehandler.h"
-#include "common/archive.h"
-#include "common/config-manager.h"
-#include "common/file.h"
-#include "common/unzip.h"
-
-namespace Networking {
-
-#define ARCHIVE_NAME "wwwroot.zip"
-
-BaseHandler::BaseHandler() {}
-
-BaseHandler::~BaseHandler() {}
-
-/// utils
-
-Common::Archive *BaseHandler::getZipArchive() const {
-	// first search in themepath
-	if (ConfMan.hasKey("themepath")) {
-		const Common::FSNode &node = Common::FSNode(ConfMan.get("themepath"));
-		if (!node.exists() || !node.isReadable() || !node.isDirectory())
-			return nullptr;
-
-		Common::FSNode fileNode = node.getChild(ARCHIVE_NAME);
-		if (fileNode.exists() && fileNode.isReadable() && !fileNode.isDirectory()) {
-			Common::SeekableReadStream *const stream = fileNode.createReadStream();
-			Common::Archive *zipArchive = Common::makeZipArchive(stream);
-			if (zipArchive) return zipArchive;
-		}
-	}
-
-	// then use SearchMan to find it
-	Common::ArchiveMemberList fileList;
-	SearchMan.listMatchingMembers(fileList, ARCHIVE_NAME);
-	for (Common::ArchiveMemberList::iterator it = fileList.begin(); it != fileList.end(); ++it) {
-		Common::ArchiveMember       const &m = **it;
-		Common::SeekableReadStream *const stream = m.createReadStream();
-		Common::Archive *zipArchive = Common::makeZipArchive(stream);
-		if (zipArchive) return zipArchive;
-	}
-
-	return nullptr;
-}
-
-Common::ArchiveMemberList BaseHandler::listArchive() const {
-	Common::ArchiveMemberList resultList;
-	Common::Archive *zipArchive = getZipArchive();
-	if (zipArchive) {
-		zipArchive->listMembers(resultList);
-		delete zipArchive;
-	}
-	return resultList;
-}
-
-Common::SeekableReadStream *BaseHandler::getArchiveFile(Common::String name) const {
-	Common::SeekableReadStream *result = nullptr;
-	Common::Archive *zipArchive = getZipArchive();
-	if (zipArchive) {
-		const Common::ArchiveMemberPtr ptr = zipArchive->getMember(name);
-		if (ptr.get() == nullptr) return nullptr;
-		result = ptr->createReadStream();
-		delete zipArchive;
-	}
-	return result;
-}
-
-Common::String BaseHandler::readEverythingFromStream(Common::SeekableReadStream *const stream) {
-	Common::String result;
-	char buf[1024];
-	uint32 readBytes;
-	while (!stream->eos()) {
-		readBytes = stream->read(buf, 1024);
-		result += Common::String(buf, readBytes);
-	}
-	return result;
-}
-
-} // End of namespace Networking
diff --git a/backends/networking/sdl_net/handlers/basehandler.h b/backends/networking/sdl_net/handlers/basehandler.h
index feea83ac9c..fd55b1372e 100644
--- a/backends/networking/sdl_net/handlers/basehandler.h
+++ b/backends/networking/sdl_net/handlers/basehandler.h
@@ -24,7 +24,6 @@
 #define BACKENDS_NETWORKING_SDL_NET_BASEHANDLER_H
 
 #include "backends/networking/sdl_net/client.h"
-#include "common/archive.h"
 #include "common/callback.h"
 
 namespace Networking {
@@ -32,15 +31,9 @@ namespace Networking {
 typedef Common::BaseCallback<Client &> *ClientHandlerCallback;
 
 class BaseHandler {
-protected:
-	Common::Archive *getZipArchive() const;
-	Common::ArchiveMemberList listArchive() const;
-	Common::SeekableReadStream *getArchiveFile(Common::String name) const;
-	static Common::String readEverythingFromStream(Common::SeekableReadStream *const stream);
-
 public:
-	BaseHandler();
-	virtual ~BaseHandler();
+	BaseHandler() {}
+	virtual ~BaseHandler() {}
 
 	virtual ClientHandlerCallback getHandler() = 0;
 };
diff --git a/backends/networking/sdl_net/handlers/createdirectoryhandler.cpp b/backends/networking/sdl_net/handlers/createdirectoryhandler.cpp
index 7b7d9ed4a0..97d75fcf14 100644
--- a/backends/networking/sdl_net/handlers/createdirectoryhandler.cpp
+++ b/backends/networking/sdl_net/handlers/createdirectoryhandler.cpp
@@ -21,15 +21,13 @@
 */
 
 #include "backends/networking/sdl_net/handlers/createdirectoryhandler.h"
-#include "backends/networking/sdl_net/localwebserver.h"
 #include "backends/fs/fs-factory.h"
-#include "common/file.h"
+#include "backends/networking/sdl_net/handlerutils.h"
+#include "backends/networking/sdl_net/localwebserver.h"
 #include "common/translation.h"
 
 namespace Networking {
 
-#define INDEX_PAGE_NAME ".index.html"
-
 CreateDirectoryHandler::CreateDirectoryHandler() {}
 
 CreateDirectoryHandler::~CreateDirectoryHandler() {}
@@ -37,94 +35,58 @@ CreateDirectoryHandler::~CreateDirectoryHandler() {}
 void CreateDirectoryHandler::handle(Client &client) {
 	Common::String path = client.queryParameter("path");
 	Common::String name = client.queryParameter("directory_name");
-	Common::String errorMessage = "";
-
-	// show an error message if failed to create directory	
-	if (!createDirectory(path, name, errorMessage)) {
-		handleErrorMessage(
-			client,
-			Common::String::format(
-				"%s<br/><a href=\"files?path=%s\">%s</a>",
-				errorMessage.c_str(),
-				"%2F", //that's encoded "/"
-				_("Back to the files manager")
-				)
-			);
-		return;
-	}
-
-	Common::String response = "<html><head><title>ScummVM</title></head><body>{message}</body></html>";
-
-	// load stylish response page from the archive
-	Common::SeekableReadStream *const stream = getArchiveFile(INDEX_PAGE_NAME);
-	if (stream) response = readEverythingFromStream(stream);
-
-	replace(response, "{message}", Common::String::format(
-			"%s<br/><a href=\"files?path=%s\">%s</a>",
-			_("Directory created successfully!"),
-			client.queryParameter("path").c_str(),
-			_("Back to parent directory")
-		)
-	);
-	LocalWebserver::setClientRedirectHandler(
-		client, response,
-		"/files?path=" + LocalWebserver::urlEncodeQueryParameterValue(client.queryParameter("path"))
-	);
-}
 
-void CreateDirectoryHandler::handleErrorMessage(Client &client, Common::String message) {
-	Common::String response = "<html><head><title>ScummVM</title></head><body>{message}</body></html>";
-
-	// load stylish response page from the archive
-	Common::SeekableReadStream *const stream = getArchiveFile(INDEX_PAGE_NAME);
-	if (stream) response = readEverythingFromStream(stream);
-
-	replace(response, "{message}", message);
-	LocalWebserver::setClientGetHandler(client, response);
-}
-
-bool CreateDirectoryHandler::createDirectory(Common::String path, Common::String name, Common::String &errorMessage) {
 	// check that <path> is not an absolute root
 	if (path == "" || path == "/") {
-		errorMessage = _("Can't create directory here!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Can't create directory here!"));
+		return;
 	}
 
 	// transform virtual path to actual file system one
 	Common::String prefixToRemove = "", prefixToAdd = "";
 	if (!transformPath(path, prefixToRemove, prefixToAdd) || path.empty()) {
-		errorMessage = _("Invalid path!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Invalid path!"));
+		return;
 	}
 
 	// check that <path> exists and is directory
 	AbstractFSNode *node = g_system->getFilesystemFactory()->makeFileNodePath(path);
 	if (!node->exists()) {
-		errorMessage = _("Parent directory doesn't exists!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Parent directory doesn't exists!"));
+		return;
 	}
 	if (!node->isDirectory()) {
-		errorMessage = _("Can't create a directory within a file!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Can't create a directory within a file!"));
+		return;
 	}
-	
+
 	// check that <directory_name> doesn't exist or is directory
 	if (path.lastChar() != '/' && path.lastChar() != '\\') path += '/';
 	node = g_system->getFilesystemFactory()->makeFileNodePath(path + name);
 	if (node->exists()) {
 		if (!node->isDirectory()) {
-			errorMessage = _("There is a file with that name in the parent directory!");
-			return false;
-		} else return true;
-	}
-	
-	// create the <directory_name> in <path>
-	if (!node->create(true)) {
-		errorMessage = _("Failed to create the directory!");
-		return false;
+			HandlerUtils::setFilesManagerErrorMessageHandler(client, _("There is a file with that name in the parent directory!"));
+			return;
+		}
+	} else {
+		// create the <directory_name> in <path>
+		if (!node->create(true)) {
+			HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Failed to create the directory!"));
+			return;
+		}
 	}
 
-	return true;
+	// set redirect on success
+	HandlerUtils::setMessageHandler(
+		client,
+		Common::String::format(
+			"%s<br/><a href=\"files?path=%s\">%s</a>",
+			_("Directory created successfully!"),
+			client.queryParameter("path").c_str(),
+			_("Back to parent directory")
+		),
+		"/files?path=" + LocalWebserver::urlEncodeQueryParameterValue(client.queryParameter("path"))
+	);
 }
 
 /// public
diff --git a/backends/networking/sdl_net/handlers/createdirectoryhandler.h b/backends/networking/sdl_net/handlers/createdirectoryhandler.h
index 023c3e74f2..2ffaf96f1f 100644
--- a/backends/networking/sdl_net/handlers/createdirectoryhandler.h
+++ b/backends/networking/sdl_net/handlers/createdirectoryhandler.h
@@ -29,16 +29,6 @@ namespace Networking {
 
 class CreateDirectoryHandler: public FilesBaseHandler {
 	void handle(Client &client);
-	void handleErrorMessage(Client &client, Common::String message);
-
-	/**
-	 * Creates the directory <name> in <path>.
-	 *
-	 * Fills <errorMessage> on failure.
-	 *
-	 * Returns true on success.
-	 */
-	bool createDirectory(Common::String path, Common::String name, Common::String &errorMessage);
 public:
 	CreateDirectoryHandler();
 	virtual ~CreateDirectoryHandler();
diff --git a/backends/networking/sdl_net/handlers/downloadfilehandler.cpp b/backends/networking/sdl_net/handlers/downloadfilehandler.cpp
index 8974cb7d19..ff45517979 100644
--- a/backends/networking/sdl_net/handlers/downloadfilehandler.cpp
+++ b/backends/networking/sdl_net/handlers/downloadfilehandler.cpp
@@ -21,77 +21,48 @@
 */
 
 #include "backends/networking/sdl_net/handlers/downloadfilehandler.h"
-#include "backends/networking/sdl_net/localwebserver.h"
 #include "backends/fs/fs-factory.h"
-#include "common/file.h"
+#include "backends/networking/sdl_net/getclienthandler.h"
+#include "backends/networking/sdl_net/handlerutils.h"
+#include "backends/networking/sdl_net/localwebserver.h"
 #include "common/translation.h"
-#include "../getclienthandler.h"
 
 namespace Networking {
 
-#define INDEX_PAGE_NAME ".index.html"
-
 DownloadFileHandler::DownloadFileHandler() {}
 
 DownloadFileHandler::~DownloadFileHandler() {}
 
 void DownloadFileHandler::handle(Client &client) {
 	Common::String path = client.queryParameter("path");
-	Common::String errorMessage = "";
-
-	// show an error message if failed to download the file
-	if (!downloadFile(client, path, errorMessage)) {
-		handleErrorMessage(
-			client,
-			Common::String::format(
-				"%s<br/><a href=\"files?path=%s\">%s</a>",
-				errorMessage.c_str(),
-				"%2F", //that's encoded "/"
-				_("Back to the files manager")
-				)
-			);
-	}
-}
-
-void DownloadFileHandler::handleErrorMessage(Client &client, Common::String message) {
-	Common::String response = "<html><head><title>ScummVM</title></head><body>{message}</body></html>";
-
-	// load stylish response page from the archive
-	Common::SeekableReadStream *const stream = getArchiveFile(INDEX_PAGE_NAME);
-	if (stream) response = readEverythingFromStream(stream);
-
-	replace(response, "{message}", message);
-	LocalWebserver::setClientGetHandler(client, response);
-}
 
-bool DownloadFileHandler::downloadFile(Client &client, Common::String path, Common::String &errorMessage) {
 	// check that <path> is not an absolute root
 	if (path == "" || path == "/") {
-		errorMessage = _("Invalid path!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Invalid path!"));
+		return;
 	}
 
 	// transform virtual path to actual file system one
 	Common::String prefixToRemove = "", prefixToAdd = "";
 	if (!transformPath(path, prefixToRemove, prefixToAdd, false) || path.empty()) {
-		errorMessage = _("Invalid path!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Invalid path!"));
+		return;
 	}
 
 	// check that <path> exists and is directory
 	AbstractFSNode *node = g_system->getFilesystemFactory()->makeFileNodePath(path);
 	if (!node->exists()) {
-		errorMessage = _("The file doesn't exist!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("The file doesn't exist!"));
+		return;
 	}
 	if (node->isDirectory()) {
-		errorMessage = _("Can't download a directory!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Can't download a directory!"));
+		return;
 	}
 	Common::SeekableReadStream *stream = node->createReadStream();
 	if (stream == nullptr) {
-		errorMessage = _("Failed to read the file!");
-		return false;
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("Failed to read the file!"));
+		return;
 	}
 
 	GetClientHandler *handler = new GetClientHandler(stream);
@@ -100,7 +71,6 @@ bool DownloadFileHandler::downloadFile(Client &client, Common::String path, Comm
 	handler->setHeader("Content-Disposition", "attachment; filename=\"" + node->getDisplayName() + "\"");
 	handler->setHeader("Content-Transfer-Encoding", "binary");	
 	client.setHandler(handler);
-	return true;
 }
 
 /// public
diff --git a/backends/networking/sdl_net/handlers/downloadfilehandler.h b/backends/networking/sdl_net/handlers/downloadfilehandler.h
index 6b6966435c..afcedec72a 100644
--- a/backends/networking/sdl_net/handlers/downloadfilehandler.h
+++ b/backends/networking/sdl_net/handlers/downloadfilehandler.h
@@ -29,16 +29,6 @@ namespace Networking {
 
 class DownloadFileHandler: public FilesBaseHandler {
 	void handle(Client &client);
-	void handleErrorMessage(Client &client, Common::String message);
-
-	/**
-	 * Creates a client handler for downloading file <path>.
-	 *
-	 * Fills <errorMessage> on failure.
-	 *
-	 * Returns true on success.
-	 */
-	bool downloadFile(Client &client, Common::String path, Common::String &errorMessage);
 public:
 	DownloadFileHandler();
 	virtual ~DownloadFileHandler();
diff --git a/backends/networking/sdl_net/handlers/filespagehandler.cpp b/backends/networking/sdl_net/handlers/filespagehandler.cpp
index 4b18ac3247..2db80f76ac 100644
--- a/backends/networking/sdl_net/handlers/filespagehandler.cpp
+++ b/backends/networking/sdl_net/handlers/filespagehandler.cpp
@@ -21,8 +21,8 @@
 */
 
 #include "backends/networking/sdl_net/handlers/filespagehandler.h"
+#include "backends/networking/sdl_net/handlerutils.h"
 #include "backends/networking/sdl_net/localwebserver.h"
-#include "common/file.h"
 #include "common/translation.h"
 
 namespace Networking {
@@ -52,23 +52,15 @@ void FilesPageHandler::handle(Client &client) {
 	Common::String itemTemplate = "<tr><td><a href=\"{link}\">{name}</a></td><td>{size}</td></tr>\n"; //TODO: load this template too?
 
 	// load stylish response page from the archive
-	Common::SeekableReadStream *const stream = getArchiveFile(FILES_PAGE_NAME);
-	if (stream) response = readEverythingFromStream(stream);
+	Common::SeekableReadStream *const stream = HandlerUtils::getArchiveFile(FILES_PAGE_NAME);
+	if (stream) response = HandlerUtils::readEverythingFromStream(stream);
 
 	Common::String path = client.queryParameter("path");
 	Common::String content = "";
 	
 	// show an error message if failed to list directory
 	if (!listDirectory(path, content, itemTemplate)) {
-		handleErrorMessage(
-			client,
-			Common::String::format(
-				"%s<br/><a href=\"files?path=%s\">%s</a>",
-				_("ScummVM couldn't list the directory you specified."),
-				"%2F", //that's encoded "/"
-				_("Back to the files manager")
-			)
-		);
+		HandlerUtils::setFilesManagerErrorMessageHandler(client, _("ScummVM couldn't list the directory you specified."));
 		return;
 	}
 
@@ -85,17 +77,6 @@ void FilesPageHandler::handle(Client &client) {
 	LocalWebserver::setClientGetHandler(client, response);
 }
 
-void FilesPageHandler::handleErrorMessage(Client &client, Common::String message) {
-	Common::String response = "<html><head><title>ScummVM</title></head><body>{message}</body></html>";
-
-	// load stylish response page from the archive
-	Common::SeekableReadStream *const stream = getArchiveFile(INDEX_PAGE_NAME);
-	if (stream) response = readEverythingFromStream(stream);
-
-	replace(response, "{message}", message);
-	LocalWebserver::setClientGetHandler(client, response);
-}
-
 bool FilesPageHandler::listDirectory(Common::String path, Common::String &content, const Common::String &itemTemplate) {
 	if (path == "" || path == "/") {
 		addItem(content, itemTemplate, true, "/root/", _("File system root"));
diff --git a/backends/networking/sdl_net/handlers/filespagehandler.h b/backends/networking/sdl_net/handlers/filespagehandler.h
index 6205dcd52c..ba132fd7ba 100644
--- a/backends/networking/sdl_net/handlers/filespagehandler.h
+++ b/backends/networking/sdl_net/handlers/filespagehandler.h
@@ -29,7 +29,6 @@ namespace Networking {
 
 class FilesPageHandler: public FilesBaseHandler {
 	void handle(Client &client);
-	void handleErrorMessage(Client &client, Common::String message);
 
 	/**
 	 * Lists the directory <path>.
diff --git a/backends/networking/sdl_net/handlers/indexpagehandler.cpp b/backends/networking/sdl_net/handlers/indexpagehandler.cpp
index 0d7256c235..da5cd2d3f9 100644
--- a/backends/networking/sdl_net/handlers/indexpagehandler.cpp
+++ b/backends/networking/sdl_net/handlers/indexpagehandler.cpp
@@ -21,47 +21,33 @@
 */
 
 #include "backends/networking/sdl_net/handlers/indexpagehandler.h"
+#include "backends/networking/sdl_net/handlerutils.h"
 #include "backends/networking/sdl_net/localwebserver.h"
-#include "backends/saves/default/default-saves.h"
-#include "common/archive.h"
-#include "common/config-manager.h"
-#include "common/file.h"
-#include "common/savefile.h"
 #include "common/translation.h"
 #include "gui/storagewizarddialog.h"
 
 namespace Networking {
 
-#define INDEX_PAGE_NAME ".index.html"
-
 IndexPageHandler::IndexPageHandler(): CommandSender(nullptr) {}
 
 IndexPageHandler::~IndexPageHandler() {}
 
 void IndexPageHandler::handle(Client &client) {
-	Common::String response = "<html><head><title>ScummVM</title></head><body>{message}</body></html>";
-
-	// load stylish response page from the archive
-	Common::SeekableReadStream *const stream = getArchiveFile(INDEX_PAGE_NAME);
-	if (stream) response = readEverythingFromStream(stream);
-
 	Common::String code = client.queryParameter("code");
 
 	if (code == "") {		
-		replace(response, "{message}", _("This is a local webserver index page."));
-		LocalWebserver::setClientGetHandler(client, response);
+		HandlerUtils::setMessageHandler(client, _("This is a local webserver index page."));
 		return;
 	}
 
 	_code = code;
 	sendCommand(GUI::kStorageCodePassedCmd, 0);
-	replace(response, "{message}", _("ScummVM got the code and already connects to your cloud storage!"));
-	LocalWebserver::setClientGetHandler(client, response);
+	HandlerUtils::setMessageHandler(client, _("ScummVM got the code and already connects to your cloud storage!"));
 }
 
 /// public
 
-Common::String IndexPageHandler::code() { return _code; }
+Common::String IndexPageHandler::code() const { return _code; }
 
 ClientHandlerCallback IndexPageHandler::getHandler() {
 	return new Common::Callback<IndexPageHandler, Client &>(this, &IndexPageHandler::handle);
diff --git a/backends/networking/sdl_net/handlers/indexpagehandler.h b/backends/networking/sdl_net/handlers/indexpagehandler.h
index f10ab63b84..0e256b503f 100644
--- a/backends/networking/sdl_net/handlers/indexpagehandler.h
+++ b/backends/networking/sdl_net/handlers/indexpagehandler.h
@@ -37,7 +37,7 @@ public:
 	IndexPageHandler();
 	virtual ~IndexPageHandler();
 
-	Common::String code();
+	Common::String code() const;
 	virtual ClientHandlerCallback getHandler();
 };
 
diff --git a/backends/networking/sdl_net/handlers/resourcehandler.cpp b/backends/networking/sdl_net/handlers/resourcehandler.cpp
index 160f78fedb..1205c4aa7d 100644
--- a/backends/networking/sdl_net/handlers/resourcehandler.cpp
+++ b/backends/networking/sdl_net/handlers/resourcehandler.cpp
@@ -21,6 +21,7 @@
 */
 
 #include "backends/networking/sdl_net/handlers/resourcehandler.h"
+#include "backends/networking/sdl_net/handlerutils.h"
 #include "backends/networking/sdl_net/localwebserver.h"
 
 namespace Networking {
@@ -37,7 +38,7 @@ void ResourceHandler::handle(Client &client) {
 	if (filename.size() && filename[0] == '.') return;
 
 	// if file not found, don't set handler either
-	Common::SeekableReadStream *file = getArchiveFile(filename);
+	Common::SeekableReadStream *file = HandlerUtils::getArchiveFile(filename);
 	if (file == nullptr) return;
 
 	LocalWebserver::setClientGetHandler(client, file, 200, LocalWebserver::determineMimeType(filename));