| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // 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.googlesource.gerrit.plugins.uploadvalidator; |
| |
| import com.google.common.io.Files; |
| import com.google.gerrit.extensions.annotations.PluginName; |
| import com.google.gerrit.server.config.PluginConfig; |
| import com.google.gerrit.server.config.PluginConfigFactory; |
| import com.google.gerrit.server.events.CommitReceivedEvent; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gerrit.server.git.validators.CommitValidationException; |
| import com.google.gerrit.server.git.validators.CommitValidationListener; |
| import com.google.gerrit.server.git.validators.CommitValidationMessage; |
| import com.google.gerrit.server.project.NoSuchProjectException; |
| import com.google.inject.Inject; |
| |
| import org.eclipse.jgit.api.Git; |
| import org.eclipse.jgit.api.errors.GitAPIException; |
| import org.eclipse.jgit.diff.DiffEntry; |
| import org.eclipse.jgit.lib.ObjectReader; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.treewalk.AbstractTreeIterator; |
| import org.eclipse.jgit.treewalk.CanonicalTreeParser; |
| import org.eclipse.jgit.treewalk.TreeWalk; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| public class FileExtensionValidator implements CommitValidationListener { |
| public static String KEY_BLOCKED_FILE_EXTENSION = "blockedFileExtension"; |
| |
| private final String pluginName; |
| private final PluginConfigFactory cfgFactory; |
| private final GitRepositoryManager repoManager; |
| |
| @Inject |
| FileExtensionValidator(@PluginName String pluginName, |
| PluginConfigFactory cfgFactory, GitRepositoryManager repoManager) { |
| this.pluginName = pluginName; |
| this.cfgFactory = cfgFactory; |
| this.repoManager = repoManager; |
| } |
| |
| @Override |
| public List<CommitValidationMessage> onCommitReceived( |
| CommitReceivedEvent receiveEvent) throws CommitValidationException { |
| try { |
| PluginConfig cfg = |
| cfgFactory.getFromProjectConfig( |
| receiveEvent.project.getNameKey(), pluginName); |
| String[] blockedFileExtensions = |
| cfg.getStringList(KEY_BLOCKED_FILE_EXTENSION); |
| if (blockedFileExtensions.length > 0) { |
| Repository repo = repoManager.openRepository(receiveEvent.project.getNameKey()); |
| try { |
| List<CommitValidationMessage> messages = new LinkedList<>(); |
| List<String> files = getFiles(repo, receiveEvent.commit); |
| for (String file : files) { |
| String ext = Files.getFileExtension(file); |
| for (int i = 0; i < blockedFileExtensions.length; i++) { |
| if (ext.equalsIgnoreCase(blockedFileExtensions[i])) { |
| messages.add(new CommitValidationMessage("blocked file: " + file, true)); |
| break; |
| } |
| } |
| } |
| if (!messages.isEmpty()) { |
| throw new CommitValidationException( |
| "contains files with blocked file extensions", messages); |
| } |
| } finally { |
| repo.close(); |
| } |
| } |
| } catch (NoSuchProjectException | IOException | GitAPIException e) { |
| throw new CommitValidationException("failed to check on file extensions", e); |
| } |
| |
| return Collections.emptyList(); |
| } |
| |
| private List<String> getFiles(Repository repo, RevCommit c) throws IOException, GitAPIException { |
| List<String> files = new ArrayList<>(); |
| |
| if (c.getParentCount() > 0) { |
| Git git = new Git(repo); |
| List<DiffEntry> diffEntries = |
| git.diff().setOldTree(getTreeIterator(repo, c.getName() + "^")) |
| .setNewTree(getTreeIterator(repo, c.getName())).call(); |
| for (DiffEntry e : diffEntries) { |
| if (e.getNewPath() != null) { |
| files.add(e.getNewPath()); |
| } |
| } |
| } else { |
| TreeWalk tw = new TreeWalk(repo); |
| tw.addTree(c.getTree()); |
| tw.setRecursive(true); |
| while (tw.next()) { |
| files.add(tw.getPathString()); |
| } |
| } |
| |
| return files; |
| } |
| |
| private AbstractTreeIterator getTreeIterator(Repository repo, String name) |
| throws IOException { |
| CanonicalTreeParser p = new CanonicalTreeParser(); |
| ObjectReader or = repo.newObjectReader(); |
| try { |
| p.reset(or, new RevWalk(repo).parseTree(repo.resolve(name))); |
| return p; |
| } finally { |
| or.release(); |
| } |
| } |
| } |