Initial commit

backends/fs/chroot/chroot-fs-factory.cpp

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+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#if defined(POSIX)
+
+#define FORBIDDEN_SYMBOL_EXCEPTION_time_h
+#define FORBIDDEN_SYMBOL_EXCEPTION_unistd_h
+#define FORBIDDEN_SYMBOL_EXCEPTION_mkdir
+#define FORBIDDEN_SYMBOL_EXCEPTION_exit		//Needed for IRIX's unistd.h
+#define FORBIDDEN_SYMBOL_EXCEPTION_random
+#define FORBIDDEN_SYMBOL_EXCEPTION_srandom
+
+#include <unistd.h>
+
+#include "backends/fs/chroot/chroot-fs-factory.h"
+#include "backends/fs/chroot/chroot-fs.h"
+
+ChRootFilesystemFactory::ChRootFilesystemFactory(const Common::String &root)
+	: _root(root) {
+}
+
+AbstractFSNode *ChRootFilesystemFactory::makeRootFileNode() const {
+	return new ChRootFilesystemNode(_root, "/");
+}
+
+AbstractFSNode *ChRootFilesystemFactory::makeCurrentDirectoryFileNode() const {
+	char buf[MAXPATHLEN];
+	if (getcwd(buf, MAXPATHLEN) == NULL) {
+		return NULL;
+	}
+
+	Common::String curPath(buf);
+	if (curPath.hasPrefix(_root + Common::String("/"))) {
+		return new ChRootFilesystemNode(_root, buf + _root.size());
+	}
+	for (auto it = _virtualDrives.begin() ; it != _virtualDrives.end() ; ++it) {
+		if (curPath.hasPrefix(it->_value + Common::String("/")))
+			return new ChRootFilesystemNode(it->_value, buf + it->_value.size(), it->_key);
+	}
+
+	return new ChRootFilesystemNode(_root, "/");
+}
+
+AbstractFSNode *ChRootFilesystemFactory::makeFileNodePath(const Common::String &path) const {
+	assert(!path.empty());
+	size_t driveEnd = path.findFirstOf('/');
+	if (driveEnd != Common::String::npos && driveEnd > 0) {
+		auto it = _virtualDrives.find(path.substr(0, driveEnd));
+		if (it != _virtualDrives.end())
+			return new ChRootFilesystemNode(it->_value, path.substr(driveEnd), it->_key);
+	}
+	return new ChRootFilesystemNode(_root, path);
+}
+
+void ChRootFilesystemFactory::addVirtualDrive(const Common::String &name, const Common::String &path) {
+	_virtualDrives[name] = path;
+}
+
+Common::String ChRootFilesystemFactory::getSystemFullPath(const Common::String& path) const {
+	size_t driveEnd = path.findFirstOf('/');
+	if (driveEnd != Common::String::npos && driveEnd > 0) {
+		auto it = _virtualDrives.find(path.substr(0, driveEnd));
+		if (it != _virtualDrives.end())
+			return it->_value + path.substr(driveEnd);
+	}
+	return _root + path;
+}
+
+#endif