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- /*
- * Copyright (C) 2010, Google Inc.
- * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.util;
-
- import static java.nio.charset.StandardCharsets.UTF_8;
-
- import java.io.IOException;
- import java.io.UnsupportedEncodingException;
- import java.net.ConnectException;
- import java.net.Proxy;
- import java.net.ProxySelector;
- import java.net.URISyntaxException;
- import java.net.URL;
- import java.net.URLEncoder;
- import java.security.KeyManagementException;
- import java.security.NoSuchAlgorithmException;
- import java.security.cert.X509Certificate;
- import java.text.MessageFormat;
-
- import javax.net.ssl.HostnameVerifier;
- import javax.net.ssl.SSLSession;
- import javax.net.ssl.TrustManager;
- import javax.net.ssl.X509TrustManager;
-
- import org.eclipse.jgit.internal.JGitText;
- import org.eclipse.jgit.transport.http.HttpConnection;
-
- /**
- * Extra utilities to support usage of HTTP.
- */
- public class HttpSupport {
- /** The {@code GET} HTTP method. */
- public static final String METHOD_GET = "GET"; //$NON-NLS-1$
-
- /** The {@code HEAD} HTTP method.
- * @since 4.3 */
- public static final String METHOD_HEAD = "HEAD"; //$NON-NLS-1$
-
- /** The {@code POST} HTTP method.
- * @since 4.3 */
- public static final String METHOD_PUT = "PUT"; //$NON-NLS-1$
-
- /** The {@code POST} HTTP method. */
- public static final String METHOD_POST = "POST"; //$NON-NLS-1$
-
- /** The {@code Cache-Control} header. */
- public static final String HDR_CACHE_CONTROL = "Cache-Control"; //$NON-NLS-1$
-
- /** The {@code Pragma} header. */
- public static final String HDR_PRAGMA = "Pragma"; //$NON-NLS-1$
-
- /** The {@code User-Agent} header. */
- public static final String HDR_USER_AGENT = "User-Agent"; //$NON-NLS-1$
-
- /**
- * The {@code Server} header.
- * @since 4.0
- */
- public static final String HDR_SERVER = "Server"; //$NON-NLS-1$
-
- /** The {@code Date} header. */
- public static final String HDR_DATE = "Date"; //$NON-NLS-1$
-
- /** The {@code Expires} header. */
- public static final String HDR_EXPIRES = "Expires"; //$NON-NLS-1$
-
- /** The {@code ETag} header. */
- public static final String HDR_ETAG = "ETag"; //$NON-NLS-1$
-
- /** The {@code If-None-Match} header. */
- public static final String HDR_IF_NONE_MATCH = "If-None-Match"; //$NON-NLS-1$
-
- /** The {@code Last-Modified} header. */
- public static final String HDR_LAST_MODIFIED = "Last-Modified"; //$NON-NLS-1$
-
- /** The {@code If-Modified-Since} header. */
- public static final String HDR_IF_MODIFIED_SINCE = "If-Modified-Since"; //$NON-NLS-1$
-
- /** The {@code Accept} header. */
- public static final String HDR_ACCEPT = "Accept"; //$NON-NLS-1$
-
- /** The {@code Content-Type} header. */
- public static final String HDR_CONTENT_TYPE = "Content-Type"; //$NON-NLS-1$
-
- /** The {@code Content-Length} header. */
- public static final String HDR_CONTENT_LENGTH = "Content-Length"; //$NON-NLS-1$
-
- /** The {@code Content-Encoding} header. */
- public static final String HDR_CONTENT_ENCODING = "Content-Encoding"; //$NON-NLS-1$
-
- /** The {@code Content-Range} header. */
- public static final String HDR_CONTENT_RANGE = "Content-Range"; //$NON-NLS-1$
-
- /** The {@code Accept-Ranges} header. */
- public static final String HDR_ACCEPT_RANGES = "Accept-Ranges"; //$NON-NLS-1$
-
- /** The {@code If-Range} header. */
- public static final String HDR_IF_RANGE = "If-Range"; //$NON-NLS-1$
-
- /** The {@code Range} header. */
- public static final String HDR_RANGE = "Range"; //$NON-NLS-1$
-
- /** The {@code Accept-Encoding} header. */
- public static final String HDR_ACCEPT_ENCODING = "Accept-Encoding"; //$NON-NLS-1$
-
- /**
- * The {@code Location} header.
- * @since 4.7
- */
- public static final String HDR_LOCATION = "Location"; //$NON-NLS-1$
-
- /** The {@code gzip} encoding value for {@link #HDR_ACCEPT_ENCODING}. */
- public static final String ENCODING_GZIP = "gzip"; //$NON-NLS-1$
-
- /**
- * The {@code x-gzip} encoding value for {@link #HDR_ACCEPT_ENCODING}.
- * @since 4.6
- */
- public static final String ENCODING_X_GZIP = "x-gzip"; //$NON-NLS-1$
-
- /** The standard {@code text/plain} MIME type. */
- public static final String TEXT_PLAIN = "text/plain"; //$NON-NLS-1$
-
- /** The {@code Authorization} header. */
- public static final String HDR_AUTHORIZATION = "Authorization"; //$NON-NLS-1$
-
- /** The {@code WWW-Authenticate} header. */
- public static final String HDR_WWW_AUTHENTICATE = "WWW-Authenticate"; //$NON-NLS-1$
-
- /**
- * URL encode a value string into an output buffer.
- *
- * @param urlstr
- * the output buffer.
- * @param key
- * value which must be encoded to protected special characters.
- */
- public static void encode(StringBuilder urlstr, String key) {
- if (key == null || key.length() == 0)
- return;
- try {
- urlstr.append(URLEncoder.encode(key, UTF_8.name()));
- } catch (UnsupportedEncodingException e) {
- throw new RuntimeException(JGitText.get().couldNotURLEncodeToUTF8, e);
- }
- }
-
- /**
- * Get the HTTP response code from the request.
- * <p>
- * Roughly the same as <code>c.getResponseCode()</code> but the
- * ConnectException is translated to be more understandable.
- *
- * @param c
- * connection the code should be obtained from.
- * @return r HTTP status code, usually 200 to indicate success. See
- * {@link org.eclipse.jgit.transport.http.HttpConnection} for other
- * defined constants.
- * @throws java.io.IOException
- * communications error prevented obtaining the response code.
- * @since 3.3
- */
- public static int response(HttpConnection c) throws IOException {
- try {
- return c.getResponseCode();
- } catch (ConnectException ce) {
- final URL url = c.getURL();
- final String host = (url == null) ? "<null>" : url.getHost(); //$NON-NLS-1$
- // The standard J2SE error message is not very useful.
- //
- if ("Connection timed out: connect".equals(ce.getMessage())) //$NON-NLS-1$
- throw new ConnectException(MessageFormat.format(JGitText.get().connectionTimeOut, host));
- throw new ConnectException(ce.getMessage() + " " + host); //$NON-NLS-1$
- }
- }
-
- /**
- * Get the HTTP response code from the request.
- * <p>
- * Roughly the same as <code>c.getResponseCode()</code> but the
- * ConnectException is translated to be more understandable.
- *
- * @param c
- * connection the code should be obtained from.
- * @return r HTTP status code, usually 200 to indicate success. See
- * {@link org.eclipse.jgit.transport.http.HttpConnection} for other
- * defined constants.
- * @throws java.io.IOException
- * communications error prevented obtaining the response code.
- */
- public static int response(java.net.HttpURLConnection c)
- throws IOException {
- try {
- return c.getResponseCode();
- } catch (ConnectException ce) {
- final URL url = c.getURL();
- final String host = (url == null) ? "<null>" : url.getHost(); //$NON-NLS-1$
- // The standard J2SE error message is not very useful.
- //
- if ("Connection timed out: connect".equals(ce.getMessage())) //$NON-NLS-1$
- throw new ConnectException(MessageFormat.format(
- JGitText.get().connectionTimeOut, host));
- throw new ConnectException(ce.getMessage() + " " + host); //$NON-NLS-1$
- }
- }
-
- /**
- * Extract a HTTP header from the response.
- *
- * @param c
- * connection the header should be obtained from.
- * @param headerName
- * the header name
- * @return the header value
- * @throws java.io.IOException
- * communications error prevented obtaining the header.
- * @since 4.7
- */
- public static String responseHeader(final HttpConnection c,
- final String headerName) throws IOException {
- return c.getHeaderField(headerName);
- }
-
- /**
- * Determine the proxy server (if any) needed to obtain a URL.
- *
- * @param proxySelector
- * proxy support for the caller.
- * @param u
- * location of the server caller wants to talk to.
- * @return proxy to communicate with the supplied URL.
- * @throws java.net.ConnectException
- * the proxy could not be computed as the supplied URL could not
- * be read. This failure should never occur.
- */
- public static Proxy proxyFor(ProxySelector proxySelector, URL u)
- throws ConnectException {
- try {
- return proxySelector.select(u.toURI()).get(0);
- } catch (URISyntaxException e) {
- final ConnectException err;
- err = new ConnectException(MessageFormat.format(JGitText.get().cannotDetermineProxyFor, u));
- err.initCause(e);
- throw err;
- }
- }
-
- /**
- * Disable SSL and hostname verification for given HTTP connection
- *
- * @param conn
- * a {@link org.eclipse.jgit.transport.http.HttpConnection}
- * object.
- * @throws java.io.IOException
- * @since 4.3
- */
- public static void disableSslVerify(HttpConnection conn)
- throws IOException {
- final TrustManager[] trustAllCerts = new TrustManager[] {
- new DummyX509TrustManager() };
- try {
- conn.configure(null, trustAllCerts, null);
- conn.setHostnameVerifier(new DummyHostnameVerifier());
- } catch (KeyManagementException e) {
- throw new IOException(e.getMessage());
- } catch (NoSuchAlgorithmException e) {
- throw new IOException(e.getMessage());
- }
- }
-
- private static class DummyX509TrustManager implements X509TrustManager {
- @Override
- public X509Certificate[] getAcceptedIssuers() {
- return null;
- }
-
- @Override
- public void checkClientTrusted(X509Certificate[] certs,
- String authType) {
- // no check
- }
-
- @Override
- public void checkServerTrusted(X509Certificate[] certs,
- String authType) {
- // no check
- }
- }
-
- private static class DummyHostnameVerifier implements HostnameVerifier {
- @Override
- public boolean verify(String hostname, SSLSession session) {
- // always accept
- return true;
- }
- }
-
- private HttpSupport() {
- // Utility class only.
- }
- }
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