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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.openapi.vfs.newvfs.impl;
import com.intellij.openapi.application.Application;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.application.PathManager;
import com.intellij.openapi.application.impl.ApplicationImpl;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.project.ProjectManager;
import com.intellij.openapi.roots.OrderEnumerator;
import com.intellij.openapi.roots.ProjectRootManager;
import com.intellij.openapi.util.Computable;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.JarFileSystem;
import com.intellij.openapi.vfs.LocalFileSystem;
import com.intellij.openapi.vfs.VfsUtilCore;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.newvfs.NewVirtualFileSystem;
import com.intellij.util.PathUtil;
import com.intellij.util.SystemProperties;
import com.intellij.util.containers.ContainerUtil;
import gnu.trove.THashSet;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.annotations.TestOnly;
import java.io.File;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Set;
public class VfsRootAccess {
private static final boolean SHOULD_PERFORM_ACCESS_CHECK = System.getenv("NO_FS_ROOTS_ACCESS_CHECK") == null;
// we don't want test subclasses to accidentally remove allowed files, added by base classes
private static final Set<String> ourAdditionalRoots = new THashSet<String>(FileUtil.PATH_HASHING_STRATEGY);
private static boolean insideGettingRoots;
@TestOnly
static void assertAccessInTests(@NotNull VirtualFileSystemEntry child, @NotNull NewVirtualFileSystem delegate) {
final Application application = ApplicationManager.getApplication();
if (SHOULD_PERFORM_ACCESS_CHECK &&
application.isUnitTestMode() &&
application instanceof ApplicationImpl &&
((ApplicationImpl)application).isComponentsCreated()) {
if (delegate != LocalFileSystem.getInstance() && delegate != JarFileSystem.getInstance()) {
return;
}
// root' children are loaded always
if (child.getParent() == null || child.getParent().getParent() == null) {
return;
}
Set<String> allowed = ApplicationManager.getApplication().runReadAction(new Computable<Set<String>>() {
@Override
public Set<String> compute() {
return allowedRoots();
}
});
boolean isUnder = allowed == null || allowed.isEmpty();
if (!isUnder) {
String childPath = child.getPath();
if (delegate == JarFileSystem.getInstance()) {
VirtualFile local = JarFileSystem.getInstance().getVirtualFileForJar(child);
assert local != null : child;
childPath = local.getPath();
}
for (String root : allowed) {
if (FileUtil.startsWith(childPath, root)) {
isUnder = true;
break;
}
if (root.startsWith(JarFileSystem.PROTOCOL_PREFIX)) {
String rootLocalPath = FileUtil.toSystemIndependentName(PathUtil.toPresentableUrl(root));
isUnder = FileUtil.startsWith(childPath, rootLocalPath);
if (isUnder) break;
}
}
}
assert isUnder : "File accessed outside allowed roots: " + child + ";\nAllowed roots: " + new ArrayList<String>(allowed);
}
}
// null means we were unable to get roots, so do not check access
@Nullable
@TestOnly
private static Set<String> allowedRoots() {
if (insideGettingRoots) return null;
Project[] openProjects = ProjectManager.getInstance().getOpenProjects();
if (openProjects.length == 0) return null;
final Set<String> allowed = new THashSet<String>(FileUtil.PATH_HASHING_STRATEGY);
allowed.add(FileUtil.toSystemIndependentName(PathManager.getHomePath()));
try {
URL outUrl = Application.class.getResource("/");
String output = new File(outUrl.toURI()).getParentFile().getParentFile().getPath();
allowed.add(FileUtil.toSystemIndependentName(output));
}
catch (URISyntaxException ignored) { }
String javaHome = SystemProperties.getJavaHome();
allowed.add(FileUtil.toSystemIndependentName(javaHome));
if (SystemInfo.isMac && SystemInfo.isAppleJvm) {
// Apple SDK has jars in the folder _next_ to the java.home
allowed.add(FileUtil.toSystemIndependentName(new File(new File(javaHome).getParent(), "Classes").getPath()));
}
allowed.add(FileUtil.toSystemIndependentName(new File(FileUtil.getTempDirectory()).getParent()));
allowed.add(FileUtil.toSystemIndependentName(System.getProperty("java.io.tmpdir")));
allowed.add(FileUtil.toSystemIndependentName(SystemProperties.getUserHome()));
for (final Project project : openProjects) {
if (!project.isInitialized()) {
return null; // all is allowed
}
for (VirtualFile root : ProjectRootManager.getInstance(project).getContentRoots()) {
allowed.add(root.getPath());
}
for (VirtualFile root : getAllRoots(project)) {
allowed.add(StringUtil.trimEnd(root.getPath(), JarFileSystem.JAR_SEPARATOR));
}
String location = project.getBasePath();
assert location != null : project;
allowed.add(FileUtil.toSystemIndependentName(location));
}
allowed.addAll(ourAdditionalRoots);
return allowed;
}
@TestOnly
private static VirtualFile[] getAllRoots(@NotNull Project project) {
insideGettingRoots = true;
final Set<VirtualFile> roots = new THashSet<VirtualFile>();
final OrderEnumerator enumerator = ProjectRootManager.getInstance(project).orderEntries();
ContainerUtil.addAll(roots, enumerator.getClassesRoots());
ContainerUtil.addAll(roots, enumerator.getSourceRoots());
insideGettingRoots = false;
return VfsUtilCore.toVirtualFileArray(roots);
}
@TestOnly
public static void allowRootAccess(@NotNull String... roots) {
for (String root : roots) {
ourAdditionalRoots.add(FileUtil.toSystemIndependentName(root));
}
}
@TestOnly
public static void disallowRootAccess(@NotNull String... roots) {
for (String root : roots) {
ourAdditionalRoots.remove(FileUtil.toSystemIndependentName(root));
}
}
}
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