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- /*
- * Copyright 2011 gitblit.com.
- *
- * 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.gitblit;
-
- import groovy.lang.Binding;
- import groovy.util.GroovyScriptEngine;
-
- import java.io.BufferedReader;
- import java.io.BufferedWriter;
- import java.io.File;
- import java.io.IOException;
- import java.io.InputStreamReader;
- import java.io.OutputStreamWriter;
- import java.text.MessageFormat;
- import java.util.Collection;
- import java.util.List;
-
- import javax.servlet.ServletConfig;
- import javax.servlet.ServletException;
- import javax.servlet.http.HttpServletRequest;
-
- import org.eclipse.jgit.http.server.resolver.DefaultReceivePackFactory;
- import org.eclipse.jgit.lib.PersonIdent;
- import org.eclipse.jgit.lib.Repository;
- import org.eclipse.jgit.transport.PostReceiveHook;
- import org.eclipse.jgit.transport.PreReceiveHook;
- import org.eclipse.jgit.transport.ReceiveCommand;
- import org.eclipse.jgit.transport.ReceiveCommand.Result;
- import org.eclipse.jgit.transport.ReceivePack;
- import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
- import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
-
- import com.gitblit.models.RepositoryModel;
- import com.gitblit.models.UserModel;
- import com.gitblit.utils.HttpUtils;
- import com.gitblit.utils.StringUtils;
-
- /**
- * The GitServlet exists to force configuration of the JGit GitServlet based on
- * the Gitblit settings from either gitblit.properties or from context
- * parameters in the web.xml file.
- *
- * It also implements and registers the Groovy hook mechanism.
- *
- * Access to this servlet is protected by the GitFilter.
- *
- * @author James Moger
- *
- */
- public class GitServlet extends org.eclipse.jgit.http.server.GitServlet {
-
- private static final long serialVersionUID = 1L;
-
- private GroovyScriptEngine gse;
-
- /**
- * Configure the servlet from Gitblit's configuration.
- */
- @Override
- public String getInitParameter(String name) {
- if (name.equals("base-path")) {
- return GitBlit.getRepositoriesFolder().getAbsolutePath();
- } else if (name.equals("export-all")) {
- return "1";
- }
- return super.getInitParameter(name);
- }
-
- @Override
- public void init(ServletConfig config) throws ServletException {
- String groovyRoot = GitBlit.getString(Keys.groovy.scriptsFolder, "groovy");
- try {
- gse = new GroovyScriptEngine(groovyRoot);
- } catch (IOException e) {
- throw new ServletException("Failed to instantiate Groovy Script Engine!", e);
- }
-
- // set the Gitblit receive hook
- setReceivePackFactory(new DefaultReceivePackFactory() {
- @Override
- public ReceivePack create(HttpServletRequest req, Repository db)
- throws ServiceNotEnabledException, ServiceNotAuthorizedException {
- ReceivePack rp = super.create(req, db);
- GitblitReceiveHook hook = new GitblitReceiveHook();
- hook.gitblitUrl = HttpUtils.getGitblitURL(req);
- rp.setPreReceiveHook(hook);
- rp.setPostReceiveHook(hook);
- return rp;
- }
- });
- super.init(config);
- }
-
- /**
- * The Gitblit receive hook allows for special processing on push events.
- * That might include rejecting writes to specific branches or executing a
- * script.
- *
- * @author James Moger
- *
- */
- private class GitblitReceiveHook implements PreReceiveHook, PostReceiveHook {
-
- protected final Logger logger = LoggerFactory.getLogger(GitblitReceiveHook.class);
-
- protected String gitblitUrl;
-
- /**
- * Instrumentation point where the incoming push event has been parsed,
- * validated, objects created BUT refs have not been updated. You might
- * use this to enforce a branch-write permissions model.
- */
- @Override
- public void onPreReceive(ReceivePack rp, Collection<ReceiveCommand> commands) {
- List<String> scripts = GitBlit.getStrings(Keys.groovy.preReceiveScripts);
- RepositoryModel repository = getRepositoryModel(rp);
- scripts.addAll(repository.preReceiveScripts);
- UserModel user = getUserModel(rp);
- runGroovy(repository, user, commands, scripts);
- for (ReceiveCommand cmd : commands) {
- if (!Result.NOT_ATTEMPTED.equals(cmd.getResult())) {
- logger.warn(MessageFormat.format("{0} {1} because \"{2}\"", cmd.getNewId()
- .getName(), cmd.getResult(), cmd.getMessage()));
- }
- }
-
- // Experimental
- // runNativeScript(rp, "hooks/pre-receive", commands);
- }
-
- /**
- * Instrumentation point where the incoming push has been applied to the
- * repository. This is the point where we would trigger a Jenkins build
- * or send an email.
- */
- @Override
- public void onPostReceive(ReceivePack rp, Collection<ReceiveCommand> commands) {
- if (commands.size() == 0) {
- logger.info("skipping post-receive hooks, no refs created, updated, or removed");
- return;
- }
- List<String> scripts = GitBlit.getStrings(Keys.groovy.postReceiveScripts);
- RepositoryModel repository = getRepositoryModel(rp);
- scripts.addAll(repository.postReceiveScripts);
- UserModel user = getUserModel(rp);
- runGroovy(repository, user, commands, scripts);
-
- // Experimental
- // runNativeScript(rp, "hooks/post-receive", commands);
- }
-
- /**
- * Returns the RepositoryModel for the repository we are pushing into.
- *
- * @param rp
- * @return a RepositoryModel
- */
- protected RepositoryModel getRepositoryModel(ReceivePack rp) {
- Repository repository = rp.getRepository();
- String rootPath = GitBlit.getRepositoriesFolder().getAbsolutePath();
- String repositoryName = repository.getDirectory().getAbsolutePath();
- repositoryName = repositoryName.substring(rootPath.length() + 1);
- RepositoryModel model = GitBlit.self().getRepositoryModel(repositoryName);
- return model;
- }
-
- /**
- * Returns the UserModel for the user pushing the changes.
- *
- * @param rp
- * @return a UserModel
- */
- protected UserModel getUserModel(ReceivePack rp) {
- PersonIdent person = rp.getRefLogIdent();
- UserModel user = GitBlit.self().getUserModel(person.getName());
- if (user == null) {
- // anonymous push, create a temporary usermodel
- user = new UserModel(person.getName());
- }
- return user;
- }
-
- /**
- * Runs the specified Groovy hook scripts.
- *
- * @param repository
- * @param user
- * @param commands
- * @param scripts
- */
- protected void runGroovy(RepositoryModel repository, UserModel user,
- Collection<ReceiveCommand> commands, List<String> scripts) {
- if (scripts == null || scripts.size() == 0) {
- // no Groovy scripts to execute
- return;
- }
-
- Binding binding = new Binding();
- binding.setVariable("gitblit", GitBlit.self());
- binding.setVariable("repository", repository);
- binding.setVariable("user", user);
- binding.setVariable("commands", commands);
- binding.setVariable("url", gitblitUrl);
- binding.setVariable("logger", logger);
- for (String script : scripts) {
- if (StringUtils.isEmpty(script)) {
- continue;
- }
- try {
- Object result = gse.run(script, binding);
- if (result instanceof Boolean) {
- if (!((Boolean) result)) {
- logger.error(MessageFormat.format(
- "Groovy script {0} has failed! Hook scripts aborted.", script));
- break;
- }
- }
- } catch (Exception e) {
- logger.error(
- MessageFormat.format("Failed to execute Groovy script {0}", script), e);
- }
- }
- }
-
- /**
- * Runs the native push hook script.
- *
- * http://book.git-scm.com/5_git_hooks.html
- * http://longair.net/blog/2011/04/09/missing-git-hooks-documentation/
- *
- * @param rp
- * @param script
- * @param commands
- */
- @SuppressWarnings("unused")
- protected void runNativeScript(ReceivePack rp, String script,
- Collection<ReceiveCommand> commands) {
-
- Repository repository = rp.getRepository();
- File scriptFile = new File(repository.getDirectory(), script);
-
- int resultCode = 0;
- if (scriptFile.exists()) {
- try {
- logger.debug("executing " + scriptFile);
- Process process = Runtime.getRuntime().exec(scriptFile.getAbsolutePath(), null,
- repository.getDirectory());
- BufferedReader reader = new BufferedReader(new InputStreamReader(
- process.getInputStream()));
- BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
- process.getOutputStream()));
- for (ReceiveCommand command : commands) {
- switch (command.getType()) {
- case UPDATE:
- // updating a ref
- writer.append(MessageFormat.format("{0} {1} {2}\n", command.getOldId()
- .getName(), command.getNewId().getName(), command.getRefName()));
- break;
- case CREATE:
- // new ref
- // oldrev hard-coded to 40? weird.
- writer.append(MessageFormat.format("40 {0} {1}\n", command.getNewId()
- .getName(), command.getRefName()));
- break;
- }
- }
- resultCode = process.waitFor();
-
- // read and buffer stdin
- // this is supposed to be piped back to the git client.
- // not sure how to do that right now.
- StringBuilder sb = new StringBuilder();
- String line = null;
- while ((line = reader.readLine()) != null) {
- sb.append(line).append('\n');
- }
- logger.debug(sb.toString());
- } catch (Throwable e) {
- resultCode = -1;
- logger.error(
- MessageFormat.format("Failed to execute {0}",
- scriptFile.getAbsolutePath()), e);
- }
- }
-
- // reject push
- if (resultCode != 0) {
- for (ReceiveCommand command : commands) {
- command.setResult(Result.REJECTED_OTHER_REASON, MessageFormat.format(
- "Native script {0} rejected push or failed",
- scriptFile.getAbsolutePath()));
- }
- }
- }
- }
- }
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