| /* |
| * Copyright (C) 2008-2010, Google Inc. |
| * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> |
| * Copyright (C) 2013, Matthias Sohn <matthias.sohn@sap.com> |
| * 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.transport; |
| |
| import static org.eclipse.jgit.lib.Constants.HEAD; |
| import static org.eclipse.jgit.util.HttpSupport.ENCODING_GZIP; |
| import static org.eclipse.jgit.util.HttpSupport.ENCODING_X_GZIP; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_ACCEPT; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_ACCEPT_ENCODING; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_CONTENT_ENCODING; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_CONTENT_TYPE; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_LOCATION; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_PRAGMA; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_USER_AGENT; |
| import static org.eclipse.jgit.util.HttpSupport.HDR_WWW_AUTHENTICATE; |
| import static org.eclipse.jgit.util.HttpSupport.METHOD_GET; |
| import static org.eclipse.jgit.util.HttpSupport.METHOD_POST; |
| |
| import java.io.BufferedReader; |
| import java.io.ByteArrayInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.net.MalformedURLException; |
| import java.net.Proxy; |
| import java.net.ProxySelector; |
| import java.net.URL; |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.HashSet; |
| import java.util.LinkedHashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeMap; |
| import java.util.zip.GZIPInputStream; |
| import java.util.zip.GZIPOutputStream; |
| |
| import org.eclipse.jgit.errors.NoRemoteRepositoryException; |
| import org.eclipse.jgit.errors.NotSupportedException; |
| import org.eclipse.jgit.errors.PackProtocolException; |
| import org.eclipse.jgit.errors.TransportException; |
| import org.eclipse.jgit.internal.JGitText; |
| import org.eclipse.jgit.internal.storage.file.RefDirectory; |
| import org.eclipse.jgit.lib.Config; |
| import org.eclipse.jgit.lib.Config.SectionParser; |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectIdRef; |
| import org.eclipse.jgit.lib.ProgressMonitor; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.lib.SymbolicRef; |
| import org.eclipse.jgit.transport.HttpAuthMethod.Type; |
| import org.eclipse.jgit.transport.http.HttpConnection; |
| import org.eclipse.jgit.util.HttpSupport; |
| import org.eclipse.jgit.util.IO; |
| import org.eclipse.jgit.util.RawParseUtils; |
| import org.eclipse.jgit.util.TemporaryBuffer; |
| import org.eclipse.jgit.util.io.DisabledOutputStream; |
| import org.eclipse.jgit.util.io.UnionInputStream; |
| |
| /** |
| * Transport over HTTP and FTP protocols. |
| * <p> |
| * If the transport is using HTTP and the remote HTTP service is Git-aware |
| * (speaks the "smart-http protocol") this client will automatically take |
| * advantage of the additional Git-specific HTTP extensions. If the remote |
| * service does not support these extensions, the client will degrade to direct |
| * file fetching. |
| * <p> |
| * If the remote (server side) repository does not have the specialized Git |
| * support, object files are retrieved directly through standard HTTP GET (or |
| * binary FTP GET) requests. This make it easy to serve a Git repository through |
| * a standard web host provider that does not offer specific support for Git. |
| * |
| * @see WalkFetchConnection |
| */ |
| public class TransportHttp extends HttpTransport implements WalkTransport, |
| PackTransport { |
| |
| private static final String SVC_UPLOAD_PACK = "git-upload-pack"; //$NON-NLS-1$ |
| |
| private static final String SVC_RECEIVE_PACK = "git-receive-pack"; //$NON-NLS-1$ |
| |
| /** |
| * Accept-Encoding header in the HTTP request |
| * (https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html). |
| * |
| * @since 4.6 |
| */ |
| public enum AcceptEncoding { |
| /** |
| * Do not specify an Accept-Encoding header. In most servers this |
| * results in the content being transmitted as-is. |
| */ |
| UNSPECIFIED, |
| |
| /** |
| * Accept gzip content encoding. |
| */ |
| GZIP |
| } |
| |
| static final TransportProtocol PROTO_HTTP = new TransportProtocol() { |
| private final String[] schemeNames = { "http", "https" }; //$NON-NLS-1$ //$NON-NLS-2$ |
| |
| private final Set<String> schemeSet = Collections |
| .unmodifiableSet(new LinkedHashSet<>(Arrays |
| .asList(schemeNames))); |
| |
| @Override |
| public String getName() { |
| return JGitText.get().transportProtoHTTP; |
| } |
| |
| @Override |
| public Set<String> getSchemes() { |
| return schemeSet; |
| } |
| |
| @Override |
| public Set<URIishField> getRequiredFields() { |
| return Collections.unmodifiableSet(EnumSet.of(URIishField.HOST, |
| URIishField.PATH)); |
| } |
| |
| @Override |
| public Set<URIishField> getOptionalFields() { |
| return Collections.unmodifiableSet(EnumSet.of(URIishField.USER, |
| URIishField.PASS, URIishField.PORT)); |
| } |
| |
| @Override |
| public int getDefaultPort() { |
| return 80; |
| } |
| |
| @Override |
| public Transport open(URIish uri, Repository local, String remoteName) |
| throws NotSupportedException { |
| return new TransportHttp(local, uri); |
| } |
| |
| @Override |
| public Transport open(URIish uri) throws NotSupportedException { |
| return new TransportHttp(uri); |
| } |
| }; |
| |
| static final TransportProtocol PROTO_FTP = new TransportProtocol() { |
| @Override |
| public String getName() { |
| return JGitText.get().transportProtoFTP; |
| } |
| |
| @Override |
| public Set<String> getSchemes() { |
| return Collections.singleton("ftp"); //$NON-NLS-1$ |
| } |
| |
| @Override |
| public Set<URIishField> getRequiredFields() { |
| return Collections.unmodifiableSet(EnumSet.of(URIishField.HOST, |
| URIishField.PATH)); |
| } |
| |
| @Override |
| public Set<URIishField> getOptionalFields() { |
| return Collections.unmodifiableSet(EnumSet.of(URIishField.USER, |
| URIishField.PASS, URIishField.PORT)); |
| } |
| |
| @Override |
| public int getDefaultPort() { |
| return 21; |
| } |
| |
| @Override |
| public Transport open(URIish uri, Repository local, String remoteName) |
| throws NotSupportedException { |
| return new TransportHttp(local, uri); |
| } |
| }; |
| |
| private static final Config.SectionParser<HttpConfig> HTTP_KEY = new SectionParser<HttpConfig>() { |
| @Override |
| public HttpConfig parse(final Config cfg) { |
| return new HttpConfig(cfg); |
| } |
| }; |
| |
| private static class HttpConfig { |
| final int postBuffer; |
| |
| final boolean sslVerify; |
| |
| HttpConfig(final Config rc) { |
| postBuffer = rc.getInt("http", "postbuffer", 1 * 1024 * 1024); //$NON-NLS-1$ //$NON-NLS-2$ |
| sslVerify = rc.getBoolean("http", "sslVerify", true); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| |
| HttpConfig() { |
| this(new Config()); |
| } |
| } |
| |
| final URL baseUrl; |
| |
| private final URL objectsUrl; |
| |
| final HttpConfig http; |
| |
| private final ProxySelector proxySelector; |
| |
| private boolean useSmartHttp = true; |
| |
| private HttpAuthMethod authMethod = HttpAuthMethod.Type.NONE.method(null); |
| |
| private Map<String, String> headers; |
| |
| TransportHttp(final Repository local, final URIish uri) |
| throws NotSupportedException { |
| super(local, uri); |
| try { |
| String uriString = uri.toString(); |
| if (!uriString.endsWith("/")) //$NON-NLS-1$ |
| uriString += "/"; //$NON-NLS-1$ |
| baseUrl = new URL(uriString); |
| objectsUrl = new URL(baseUrl, "objects/"); //$NON-NLS-1$ |
| } catch (MalformedURLException e) { |
| throw new NotSupportedException(MessageFormat.format(JGitText.get().invalidURL, uri), e); |
| } |
| http = local.getConfig().get(HTTP_KEY); |
| proxySelector = ProxySelector.getDefault(); |
| } |
| |
| /** |
| * Create a minimal HTTP transport with default configuration values. |
| * |
| * @param uri |
| * @throws NotSupportedException |
| */ |
| TransportHttp(final URIish uri) throws NotSupportedException { |
| super(uri); |
| try { |
| String uriString = uri.toString(); |
| if (!uriString.endsWith("/")) //$NON-NLS-1$ |
| uriString += "/"; //$NON-NLS-1$ |
| baseUrl = new URL(uriString); |
| objectsUrl = new URL(baseUrl, "objects/"); //$NON-NLS-1$ |
| } catch (MalformedURLException e) { |
| throw new NotSupportedException(MessageFormat.format(JGitText.get().invalidURL, uri), e); |
| } |
| http = new HttpConfig(); |
| proxySelector = ProxySelector.getDefault(); |
| } |
| |
| /** |
| * Toggle whether or not smart HTTP transport should be used. |
| * <p> |
| * This flag exists primarily to support backwards compatibility testing |
| * within a testing framework, there is no need to modify it in most |
| * applications. |
| * |
| * @param on |
| * if {@code true} (default), smart HTTP is enabled. |
| */ |
| public void setUseSmartHttp(final boolean on) { |
| useSmartHttp = on; |
| } |
| |
| @Override |
| public FetchConnection openFetch() throws TransportException, |
| NotSupportedException { |
| final String service = SVC_UPLOAD_PACK; |
| try { |
| final HttpConnection c = connect(service); |
| final InputStream in = openInputStream(c); |
| try { |
| BaseConnection f; |
| if (isSmartHttp(c, service)) { |
| readSmartHeaders(in, service); |
| f = new SmartHttpFetchConnection(in); |
| } else { |
| // Assume this server doesn't support smart HTTP fetch |
| // and fall back on dumb object walking. |
| f = newDumbConnection(in); |
| } |
| f.setPeerUserAgent(c.getHeaderField(HttpSupport.HDR_SERVER)); |
| return (FetchConnection) f; |
| } finally { |
| in.close(); |
| } |
| } catch (NotSupportedException err) { |
| throw err; |
| } catch (TransportException err) { |
| throw err; |
| } catch (IOException err) { |
| throw new TransportException(uri, JGitText.get().errorReadingInfoRefs, err); |
| } |
| } |
| |
| private WalkFetchConnection newDumbConnection(InputStream in) |
| throws IOException, PackProtocolException { |
| HttpObjectDB d = new HttpObjectDB(objectsUrl); |
| BufferedReader br = toBufferedReader(in); |
| Map<String, Ref> refs; |
| try { |
| refs = d.readAdvertisedImpl(br); |
| } finally { |
| br.close(); |
| } |
| |
| if (!refs.containsKey(HEAD)) { |
| // If HEAD was not published in the info/refs file (it usually |
| // is not there) download HEAD by itself as a loose file and do |
| // the resolution by hand. |
| // |
| HttpConnection conn = httpOpen( |
| METHOD_GET, |
| new URL(baseUrl, HEAD), |
| AcceptEncoding.GZIP); |
| int status = HttpSupport.response(conn); |
| switch (status) { |
| case HttpConnection.HTTP_OK: { |
| br = toBufferedReader(openInputStream(conn)); |
| try { |
| String line = br.readLine(); |
| if (line != null && line.startsWith(RefDirectory.SYMREF)) { |
| String target = line.substring(RefDirectory.SYMREF.length()); |
| Ref r = refs.get(target); |
| if (r == null) |
| r = new ObjectIdRef.Unpeeled(Ref.Storage.NEW, target, null); |
| r = new SymbolicRef(HEAD, r); |
| refs.put(r.getName(), r); |
| } else if (line != null && ObjectId.isId(line)) { |
| Ref r = new ObjectIdRef.Unpeeled(Ref.Storage.NETWORK, |
| HEAD, ObjectId.fromString(line)); |
| refs.put(r.getName(), r); |
| } |
| } finally { |
| br.close(); |
| } |
| break; |
| } |
| |
| case HttpConnection.HTTP_NOT_FOUND: |
| break; |
| |
| default: |
| throw new TransportException(uri, MessageFormat.format( |
| JGitText.get().cannotReadHEAD, Integer.valueOf(status), |
| conn.getResponseMessage())); |
| } |
| } |
| |
| WalkFetchConnection wfc = new WalkFetchConnection(this, d); |
| wfc.available(refs); |
| return wfc; |
| } |
| |
| private BufferedReader toBufferedReader(InputStream in) { |
| return new BufferedReader(new InputStreamReader(in, Constants.CHARSET)); |
| } |
| |
| @Override |
| public PushConnection openPush() throws NotSupportedException, |
| TransportException { |
| final String service = SVC_RECEIVE_PACK; |
| try { |
| final HttpConnection c = connect(service); |
| final InputStream in = openInputStream(c); |
| try { |
| if (isSmartHttp(c, service)) { |
| return smartPush(service, c, in); |
| } else if (!useSmartHttp) { |
| final String msg = JGitText.get().smartHTTPPushDisabled; |
| throw new NotSupportedException(msg); |
| |
| } else { |
| final String msg = JGitText.get().remoteDoesNotSupportSmartHTTPPush; |
| throw new NotSupportedException(msg); |
| } |
| } finally { |
| in.close(); |
| } |
| } catch (NotSupportedException err) { |
| throw err; |
| } catch (TransportException err) { |
| throw err; |
| } catch (IOException err) { |
| throw new TransportException(uri, JGitText.get().errorReadingInfoRefs, err); |
| } |
| } |
| |
| private PushConnection smartPush(String service, HttpConnection c, |
| InputStream in) throws IOException, TransportException { |
| readSmartHeaders(in, service); |
| SmartHttpPushConnection p = new SmartHttpPushConnection(in); |
| p.setPeerUserAgent(c.getHeaderField(HttpSupport.HDR_SERVER)); |
| return p; |
| } |
| |
| @Override |
| public void close() { |
| // No explicit connections are maintained. |
| } |
| |
| /** |
| * Set additional headers on the HTTP connection |
| * |
| * @param headers |
| * a map of name:values that are to be set as headers on the HTTP |
| * connection |
| * @since 3.4 |
| */ |
| public void setAdditionalHeaders(Map<String, String> headers) { |
| this.headers = headers; |
| } |
| |
| private HttpConnection connect(final String service) |
| throws TransportException, NotSupportedException { |
| final URL u; |
| try { |
| final StringBuilder b = new StringBuilder(); |
| b.append(baseUrl); |
| |
| if (b.charAt(b.length() - 1) != '/') |
| b.append('/'); |
| b.append(Constants.INFO_REFS); |
| |
| if (useSmartHttp) { |
| b.append(b.indexOf("?") < 0 ? '?' : '&'); //$NON-NLS-1$ |
| b.append("service="); //$NON-NLS-1$ |
| b.append(service); |
| } |
| |
| u = new URL(b.toString()); |
| } catch (MalformedURLException e) { |
| throw new NotSupportedException(MessageFormat.format(JGitText.get().invalidURL, uri), e); |
| } |
| |
| |
| int authAttempts = 1; |
| Collection<Type> ignoreTypes = null; |
| for (;;) { |
| try { |
| final HttpConnection conn = httpOpen(METHOD_GET, u, AcceptEncoding.GZIP); |
| if (useSmartHttp) { |
| String exp = "application/x-" + service + "-advertisement"; //$NON-NLS-1$ //$NON-NLS-2$ |
| conn.setRequestProperty(HDR_ACCEPT, exp + ", */*"); //$NON-NLS-1$ |
| } else { |
| conn.setRequestProperty(HDR_ACCEPT, "*/*"); //$NON-NLS-1$ |
| } |
| final int status = HttpSupport.response(conn); |
| switch (status) { |
| case HttpConnection.HTTP_OK: |
| // Check if HttpConnection did some authentication in the |
| // background (e.g Kerberos/SPNEGO). |
| // That may not work for streaming requests and jgit |
| // explicit authentication would be required |
| if (authMethod.getType() == HttpAuthMethod.Type.NONE |
| && conn.getHeaderField(HDR_WWW_AUTHENTICATE) != null) |
| authMethod = HttpAuthMethod.scanResponse(conn, ignoreTypes); |
| return conn; |
| |
| case HttpConnection.HTTP_NOT_FOUND: |
| throw new NoRemoteRepositoryException(uri, |
| MessageFormat.format(JGitText.get().uriNotFound, u)); |
| |
| case HttpConnection.HTTP_UNAUTHORIZED: |
| authMethod = HttpAuthMethod.scanResponse(conn, ignoreTypes); |
| if (authMethod.getType() == HttpAuthMethod.Type.NONE) |
| throw new TransportException(uri, MessageFormat.format( |
| JGitText.get().authenticationNotSupported, uri)); |
| CredentialsProvider credentialsProvider = getCredentialsProvider(); |
| if (credentialsProvider == null) |
| throw new TransportException(uri, |
| JGitText.get().noCredentialsProvider); |
| if (authAttempts > 1) |
| credentialsProvider.reset(uri); |
| if (3 < authAttempts |
| || !authMethod.authorize(uri, credentialsProvider)) { |
| throw new TransportException(uri, |
| JGitText.get().notAuthorized); |
| } |
| authAttempts++; |
| continue; |
| |
| case HttpConnection.HTTP_FORBIDDEN: |
| throw new TransportException(uri, MessageFormat.format( |
| JGitText.get().serviceNotPermitted, service)); |
| |
| default: |
| String err = status + " " + conn.getResponseMessage(); //$NON-NLS-1$ |
| throw new TransportException(uri, err); |
| } |
| } catch (NotSupportedException e) { |
| throw e; |
| } catch (TransportException e) { |
| throw e; |
| } catch (IOException e) { |
| if (authMethod.getType() != HttpAuthMethod.Type.NONE) { |
| if (ignoreTypes == null) { |
| ignoreTypes = new HashSet<>(); |
| } |
| |
| ignoreTypes.add(authMethod.getType()); |
| |
| // reset auth method & attempts for next authentication type |
| authMethod = HttpAuthMethod.Type.NONE.method(null); |
| authAttempts = 1; |
| |
| continue; |
| } |
| |
| throw new TransportException(uri, MessageFormat.format(JGitText.get().cannotOpenService, service), e); |
| } |
| } |
| } |
| |
| /** |
| * Open an HTTP connection, setting the accept-encoding request header to gzip. |
| * |
| * @param method HTTP request method |
| * @param u url of the HTTP connection |
| * @return the HTTP connection |
| * @throws IOException |
| * @since 3.3 |
| * @deprecated use {@link #httpOpen(String, URL, AcceptEncoding)} instead. |
| */ |
| @Deprecated |
| protected HttpConnection httpOpen(String method, URL u) throws IOException { |
| return httpOpen(method, u, AcceptEncoding.GZIP); |
| } |
| |
| /** |
| * Open an HTTP connection. |
| * |
| * @param method HTTP request method |
| * @param u url of the HTTP connection |
| * @param acceptEncoding accept-encoding header option |
| * @return the HTTP connection |
| * @throws IOException |
| * @since 4.6 |
| */ |
| protected HttpConnection httpOpen(String method, URL u, |
| AcceptEncoding acceptEncoding) throws IOException { |
| if (method == null || u == null || acceptEncoding == null) { |
| throw new NullPointerException(); |
| } |
| |
| final Proxy proxy = HttpSupport.proxyFor(proxySelector, u); |
| HttpConnection conn = connectionFactory.create(u, proxy); |
| |
| if (!http.sslVerify && "https".equals(u.getProtocol())) { //$NON-NLS-1$ |
| HttpSupport.disableSslVerify(conn); |
| } |
| |
| conn.setRequestMethod(method); |
| conn.setUseCaches(false); |
| if (acceptEncoding == AcceptEncoding.GZIP) { |
| conn.setRequestProperty(HDR_ACCEPT_ENCODING, ENCODING_GZIP); |
| } |
| conn.setRequestProperty(HDR_PRAGMA, "no-cache"); //$NON-NLS-1$ |
| if (UserAgent.get() != null) { |
| conn.setRequestProperty(HDR_USER_AGENT, UserAgent.get()); |
| } |
| int timeOut = getTimeout(); |
| if (timeOut != -1) { |
| int effTimeOut = timeOut * 1000; |
| conn.setConnectTimeout(effTimeOut); |
| conn.setReadTimeout(effTimeOut); |
| } |
| if (this.headers != null && !this.headers.isEmpty()) { |
| for (Map.Entry<String, String> entry : this.headers.entrySet()) |
| conn.setRequestProperty(entry.getKey(), entry.getValue()); |
| } |
| authMethod.configureRequest(conn); |
| return conn; |
| } |
| |
| final InputStream openInputStream(HttpConnection conn) |
| throws IOException { |
| InputStream input = conn.getInputStream(); |
| if (isGzipContent(conn)) |
| input = new GZIPInputStream(input); |
| return input; |
| } |
| |
| IOException wrongContentType(String expType, String actType) { |
| final String why = MessageFormat.format(JGitText.get().expectedReceivedContentType, expType, actType); |
| return new TransportException(uri, why); |
| } |
| |
| private boolean isSmartHttp(final HttpConnection c, final String service) { |
| final String expType = "application/x-" + service + "-advertisement"; //$NON-NLS-1$ //$NON-NLS-2$ |
| final String actType = c.getContentType(); |
| return expType.equals(actType); |
| } |
| |
| private boolean isGzipContent(final HttpConnection c) { |
| return ENCODING_GZIP.equals(c.getHeaderField(HDR_CONTENT_ENCODING)) |
| || ENCODING_X_GZIP.equals(c.getHeaderField(HDR_CONTENT_ENCODING)); |
| } |
| |
| private void readSmartHeaders(final InputStream in, final String service) |
| throws IOException { |
| // A smart reply will have a '#' after the first 4 bytes, but |
| // a dumb reply cannot contain a '#' until after byte 41. Do a |
| // quick check to make sure its a smart reply before we parse |
| // as a pkt-line stream. |
| // |
| final byte[] magic = new byte[5]; |
| IO.readFully(in, magic, 0, magic.length); |
| if (magic[4] != '#') { |
| throw new TransportException(uri, MessageFormat.format( |
| JGitText.get().expectedPktLineWithService, RawParseUtils.decode(magic))); |
| } |
| |
| final PacketLineIn pckIn = new PacketLineIn(new UnionInputStream( |
| new ByteArrayInputStream(magic), in)); |
| final String exp = "# service=" + service; //$NON-NLS-1$ |
| final String act = pckIn.readString(); |
| if (!exp.equals(act)) { |
| throw new TransportException(uri, MessageFormat.format( |
| JGitText.get().expectedGot, exp, act)); |
| } |
| |
| while (pckIn.readString() != PacketLineIn.END) { |
| // for now, ignore the remaining header lines |
| } |
| } |
| |
| class HttpObjectDB extends WalkRemoteObjectDatabase { |
| private final URL httpObjectsUrl; |
| |
| HttpObjectDB(final URL b) { |
| httpObjectsUrl = b; |
| } |
| |
| @Override |
| URIish getURI() { |
| return new URIish(httpObjectsUrl); |
| } |
| |
| @Override |
| Collection<WalkRemoteObjectDatabase> getAlternates() throws IOException { |
| try { |
| return readAlternates(INFO_HTTP_ALTERNATES); |
| } catch (FileNotFoundException err) { |
| // Fall through. |
| } |
| |
| try { |
| return readAlternates(INFO_ALTERNATES); |
| } catch (FileNotFoundException err) { |
| // Fall through. |
| } |
| |
| return null; |
| } |
| |
| @Override |
| WalkRemoteObjectDatabase openAlternate(final String location) |
| throws IOException { |
| return new HttpObjectDB(new URL(httpObjectsUrl, location)); |
| } |
| |
| @Override |
| BufferedReader openReader(String path) throws IOException { |
| // Line oriented readable content is likely to compress well. |
| // Request gzip encoding. |
| InputStream is = open(path, AcceptEncoding.GZIP).in; |
| return new BufferedReader(new InputStreamReader(is, Constants.CHARSET)); |
| } |
| |
| @Override |
| Collection<String> getPackNames() throws IOException { |
| final Collection<String> packs = new ArrayList<>(); |
| try { |
| final BufferedReader br = openReader(INFO_PACKS); |
| try { |
| for (;;) { |
| final String s = br.readLine(); |
| if (s == null || s.length() == 0) |
| break; |
| if (!s.startsWith("P pack-") || !s.endsWith(".pack")) //$NON-NLS-1$ //$NON-NLS-2$ |
| throw invalidAdvertisement(s); |
| packs.add(s.substring(2)); |
| } |
| return packs; |
| } finally { |
| br.close(); |
| } |
| } catch (FileNotFoundException err) { |
| return packs; |
| } |
| } |
| |
| @Override |
| FileStream open(final String path) throws IOException { |
| return open(path, AcceptEncoding.UNSPECIFIED); |
| } |
| |
| FileStream open(String path, AcceptEncoding acceptEncoding) |
| throws IOException { |
| final URL base = httpObjectsUrl; |
| final URL u = new URL(base, path); |
| final HttpConnection c = httpOpen(METHOD_GET, u, acceptEncoding); |
| switch (HttpSupport.response(c)) { |
| case HttpConnection.HTTP_OK: |
| final InputStream in = openInputStream(c); |
| // If content is being gzipped and then transferred, the content |
| // length in the header is the zipped content length, not the |
| // actual content length. |
| if (!isGzipContent(c)) { |
| final int len = c.getContentLength(); |
| return new FileStream(in, len); |
| } |
| return new FileStream(in); |
| case HttpConnection.HTTP_NOT_FOUND: |
| throw new FileNotFoundException(u.toString()); |
| default: |
| throw new IOException(u.toString() + ": " //$NON-NLS-1$ |
| + HttpSupport.response(c) + " " //$NON-NLS-1$ |
| + c.getResponseMessage()); |
| } |
| } |
| |
| Map<String, Ref> readAdvertisedImpl(final BufferedReader br) |
| throws IOException, PackProtocolException { |
| final TreeMap<String, Ref> avail = new TreeMap<>(); |
| for (;;) { |
| String line = br.readLine(); |
| if (line == null) |
| break; |
| |
| final int tab = line.indexOf('\t'); |
| if (tab < 0) |
| throw invalidAdvertisement(line); |
| |
| String name; |
| final ObjectId id; |
| |
| name = line.substring(tab + 1); |
| id = ObjectId.fromString(line.substring(0, tab)); |
| if (name.endsWith("^{}")) { //$NON-NLS-1$ |
| name = name.substring(0, name.length() - 3); |
| final Ref prior = avail.get(name); |
| if (prior == null) |
| throw outOfOrderAdvertisement(name); |
| |
| if (prior.getPeeledObjectId() != null) |
| throw duplicateAdvertisement(name + "^{}"); //$NON-NLS-1$ |
| |
| avail.put(name, new ObjectIdRef.PeeledTag( |
| Ref.Storage.NETWORK, name, |
| prior.getObjectId(), id)); |
| } else { |
| Ref prior = avail.put(name, new ObjectIdRef.PeeledNonTag( |
| Ref.Storage.NETWORK, name, id)); |
| if (prior != null) |
| throw duplicateAdvertisement(name); |
| } |
| } |
| return avail; |
| } |
| |
| private PackProtocolException outOfOrderAdvertisement(final String n) { |
| return new PackProtocolException(MessageFormat.format(JGitText.get().advertisementOfCameBefore, n, n)); |
| } |
| |
| private PackProtocolException invalidAdvertisement(final String n) { |
| return new PackProtocolException(MessageFormat.format(JGitText.get().invalidAdvertisementOf, n)); |
| } |
| |
| private PackProtocolException duplicateAdvertisement(final String n) { |
| return new PackProtocolException(MessageFormat.format(JGitText.get().duplicateAdvertisementsOf, n)); |
| } |
| |
| @Override |
| void close() { |
| // We do not maintain persistent connections. |
| } |
| } |
| |
| class SmartHttpFetchConnection extends BasePackFetchConnection { |
| private MultiRequestService svc; |
| |
| SmartHttpFetchConnection(final InputStream advertisement) |
| throws TransportException { |
| super(TransportHttp.this); |
| statelessRPC = true; |
| |
| init(advertisement, DisabledOutputStream.INSTANCE); |
| outNeedsEnd = false; |
| readAdvertisedRefs(); |
| } |
| |
| @Override |
| protected void doFetch(final ProgressMonitor monitor, |
| final Collection<Ref> want, final Set<ObjectId> have, |
| final OutputStream outputStream) throws TransportException { |
| try { |
| svc = new MultiRequestService(SVC_UPLOAD_PACK); |
| init(svc.getInputStream(), svc.getOutputStream()); |
| super.doFetch(monitor, want, have, outputStream); |
| } finally { |
| svc = null; |
| } |
| } |
| |
| @Override |
| protected void onReceivePack() { |
| svc.finalRequest = true; |
| } |
| } |
| |
| class SmartHttpPushConnection extends BasePackPushConnection { |
| SmartHttpPushConnection(final InputStream advertisement) |
| throws TransportException { |
| super(TransportHttp.this); |
| statelessRPC = true; |
| |
| init(advertisement, DisabledOutputStream.INSTANCE); |
| outNeedsEnd = false; |
| readAdvertisedRefs(); |
| } |
| |
| @Override |
| protected void doPush(final ProgressMonitor monitor, |
| final Map<String, RemoteRefUpdate> refUpdates, |
| OutputStream outputStream) throws TransportException { |
| final Service svc = new MultiRequestService(SVC_RECEIVE_PACK); |
| init(svc.getInputStream(), svc.getOutputStream()); |
| super.doPush(monitor, refUpdates, outputStream); |
| } |
| } |
| |
| /** Basic service for sending and receiving HTTP requests. */ |
| abstract class Service { |
| protected final String serviceName; |
| |
| protected final String requestType; |
| |
| protected final String responseType; |
| |
| protected HttpConnection conn; |
| |
| protected HttpOutputStream out; |
| |
| protected final HttpExecuteStream execute; |
| |
| final UnionInputStream in; |
| |
| Service(String serviceName) { |
| this.serviceName = serviceName; |
| this.requestType = "application/x-" + serviceName + "-request"; //$NON-NLS-1$ //$NON-NLS-2$ |
| this.responseType = "application/x-" + serviceName + "-result"; //$NON-NLS-1$ //$NON-NLS-2$ |
| |
| this.out = new HttpOutputStream(); |
| this.execute = new HttpExecuteStream(); |
| this.in = new UnionInputStream(execute); |
| } |
| |
| void openStream() throws IOException { |
| openStream(null); |
| } |
| |
| void openStream(final String redirectUrl) throws IOException { |
| conn = httpOpen( |
| METHOD_POST, |
| redirectUrl == null ? new URL(baseUrl, serviceName) : new URL(redirectUrl), |
| AcceptEncoding.GZIP); |
| conn.setInstanceFollowRedirects(false); |
| conn.setDoOutput(true); |
| conn.setRequestProperty(HDR_CONTENT_TYPE, requestType); |
| conn.setRequestProperty(HDR_ACCEPT, responseType); |
| } |
| |
| void sendRequest() throws IOException { |
| sendRequest(null); |
| } |
| |
| void sendRequest(final String redirectUrl) throws IOException { |
| // Try to compress the content, but only if that is smaller. |
| TemporaryBuffer buf = new TemporaryBuffer.Heap(http.postBuffer); |
| try { |
| GZIPOutputStream gzip = new GZIPOutputStream(buf); |
| out.writeTo(gzip, null); |
| gzip.close(); |
| if (out.length() < buf.length()) |
| buf = out; |
| } catch (IOException err) { |
| // Most likely caused by overflowing the buffer, meaning |
| // its larger if it were compressed. Don't compress. |
| buf = out; |
| } |
| |
| openStream(redirectUrl); |
| if (buf != out) |
| conn.setRequestProperty(HDR_CONTENT_ENCODING, ENCODING_GZIP); |
| conn.setFixedLengthStreamingMode((int) buf.length()); |
| final OutputStream httpOut = conn.getOutputStream(); |
| try { |
| buf.writeTo(httpOut, null); |
| } finally { |
| httpOut.close(); |
| } |
| |
| final int status = HttpSupport.response(conn); |
| if (status == HttpConnection.HTTP_MOVED_PERM) { |
| String locationHeader = HttpSupport.responseHeader(conn, HDR_LOCATION); |
| sendRequest(locationHeader); |
| } |
| } |
| |
| void openResponse() throws IOException { |
| final int status = HttpSupport.response(conn); |
| if (status != HttpConnection.HTTP_OK) { |
| throw new TransportException(uri, status + " " //$NON-NLS-1$ |
| + conn.getResponseMessage()); |
| } |
| |
| final String contentType = conn.getContentType(); |
| if (!responseType.equals(contentType)) { |
| conn.getInputStream().close(); |
| throw wrongContentType(responseType, contentType); |
| } |
| } |
| |
| HttpOutputStream getOutputStream() { |
| return out; |
| } |
| |
| InputStream getInputStream() { |
| return in; |
| } |
| |
| abstract void execute() throws IOException; |
| |
| class HttpExecuteStream extends InputStream { |
| @Override |
| public int read() throws IOException { |
| execute(); |
| return -1; |
| } |
| |
| @Override |
| public int read(byte[] b, int off, int len) throws IOException { |
| execute(); |
| return -1; |
| } |
| |
| @Override |
| public long skip(long n) throws IOException { |
| execute(); |
| return 0; |
| } |
| } |
| |
| class HttpOutputStream extends TemporaryBuffer { |
| HttpOutputStream() { |
| super(http.postBuffer); |
| } |
| |
| @Override |
| protected OutputStream overflow() throws IOException { |
| openStream(); |
| conn.setChunkedStreamingMode(0); |
| return conn.getOutputStream(); |
| } |
| } |
| } |
| |
| /** |
| * State required to speak multiple HTTP requests with the remote. |
| * <p> |
| * A service wrapper provides a normal looking InputStream and OutputStream |
| * pair which are connected via HTTP to the named remote service. Writing to |
| * the OutputStream is buffered until either the buffer overflows, or |
| * reading from the InputStream occurs. If overflow occurs HTTP/1.1 and its |
| * chunked transfer encoding is used to stream the request data to the |
| * remote service. If the entire request fits in the memory buffer, the |
| * older HTTP/1.0 standard and a fixed content length is used instead. |
| * <p> |
| * It is an error to attempt to read without there being outstanding data |
| * ready for transmission on the OutputStream. |
| * <p> |
| * No state is preserved between write-read request pairs. The caller is |
| * responsible for replaying state vector information as part of the request |
| * data written to the OutputStream. Any session HTTP cookies may or may not |
| * be preserved between requests, it is left up to the JVM's implementation |
| * of the HTTP client. |
| */ |
| class MultiRequestService extends Service { |
| boolean finalRequest; |
| |
| MultiRequestService(final String serviceName) { |
| super(serviceName); |
| } |
| |
| /** Keep opening send-receive pairs to the given URI. */ |
| @Override |
| void execute() throws IOException { |
| out.close(); |
| |
| if (conn == null) { |
| if (out.length() == 0) { |
| // Request output hasn't started yet, but more data is being |
| // requested. If there is no request data buffered and the |
| // final request was already sent, do nothing to ensure the |
| // caller is shown EOF on the InputStream; otherwise an |
| // programming error has occurred within this module. |
| if (finalRequest) |
| return; |
| throw new TransportException(uri, |
| JGitText.get().startingReadStageWithoutWrittenRequestDataPendingIsNotSupported); |
| } |
| |
| sendRequest(); |
| } |
| |
| out.reset(); |
| |
| openResponse(); |
| |
| in.add(openInputStream(conn)); |
| if (!finalRequest) |
| in.add(execute); |
| conn = null; |
| } |
| } |
| |
| /** Service for maintaining a single long-poll connection. */ |
| class LongPollService extends Service { |
| /** |
| * @param serviceName |
| */ |
| LongPollService(String serviceName) { |
| super(serviceName); |
| } |
| |
| /** Only open one send-receive request. */ |
| @Override |
| void execute() throws IOException { |
| out.close(); |
| if (conn == null) |
| sendRequest(); |
| openResponse(); |
| in.add(openInputStream(conn)); |
| } |
| } |
| } |