CLOUD: Add UploadFileClientHandler

Now Client reads the first headers block, then LocalWebserver decides
which Handler to use. In case of "/upload", UploadFileHandler is used.

But now it only knows the "path" parameter. If that's valid, actual
UploadFileClientHandler is created, which reads the contents of the
request and, when finds there  an "upload_file" field, starts saving it
in the directory specified by "path".

With that we don't need temp files approach from Reader class.

1 files changed, 121 insertions, 0 deletions

diff --git a/backends/networking/sdl_net/handlerutils.cpp b/backends/networking/sdl_net/handlerutils.cpp
new file mode 100644
index 0000000000..f249ee1e29
--- /dev/null
+++ b/backends/networking/sdl_net/handlerutils.cpp
@@ -0,0 +1,121 @@
+/* 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/handlerutils.h"
+#include "backends/networking/sdl_net/localwebserver.h"
+#include "common/archive.h"
+#include "common/config-manager.h"
+#include "common/file.h"
+#include "common/translation.h"
+#include "common/unzip.h"
+
+namespace Networking {
+
+#define ARCHIVE_NAME "wwwroot.zip"
+
+#define INDEX_PAGE_NAME ".index.html"
+
+Common::Archive *HandlerUtils::getZipArchive() {
+	// 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 HandlerUtils::listArchive() {
+	Common::ArchiveMemberList resultList;
+	Common::Archive *zipArchive = getZipArchive();
+	if (zipArchive) {
+		zipArchive->listMembers(resultList);
+		delete zipArchive;
+	}
+	return resultList;
+}
+
+Common::SeekableReadStream *HandlerUtils::getArchiveFile(Common::String name) {
+	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 HandlerUtils::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;
+}
+
+void HandlerUtils::setMessageHandler(Client &client, Common::String message, Common::String redirectTo) {
+	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);
+	if (redirectTo.empty()) LocalWebserver::setClientGetHandler(client, response);
+	else LocalWebserver::setClientRedirectHandler(client, response, redirectTo);
+}
+
+void HandlerUtils::setFilesManagerErrorMessageHandler(Client &client, Common::String message, Common::String redirectTo) {
+	setMessageHandler(client,
+		Common::String::format(
+			"%s<br/><a href=\"files?path=%s\">%s</a>",
+			message.c_str(),
+			"%2F", //that's encoded "/"
+			_("Back to the files manager")
+		), redirectTo
+	);
+}
+
+} // End of namespace Networking