/*
* Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com>
* Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
* 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.transport;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Set;
import org.eclipse.jgit.JGitText;
import org.eclipse.jgit.errors.NotSupportedException;
import org.eclipse.jgit.errors.TransportException;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.util.io.SafeBufferedOutputStream;
/**
* Transport through a git-daemon waiting for anonymous TCP connections.
* <p>
* This transport supports the <code>git://</code> protocol, usually run on
* the IANA registered port 9418. It is a popular means for distributing open
* source projects, as there are no authentication or authorization overheads.
*/
class TransportGitAnon extends TcpTransport implements PackTransport {
static final int GIT_PORT = Daemon.DEFAULT_PORT;
static final TransportProtocol PROTO_GIT = new TransportProtocol() {
public String getName() {
return JGitText.get().transportProtoGitAnon;
}
public Set<String> getSchemes() {
return Collections.singleton("git"); //$NON-NLS-1$
}
public Set<URIishField> getRequiredFields() {
return Collections.unmodifiableSet(EnumSet.of(URIishField.HOST,
URIishField.PATH));
}
public Set<URIishField> getOptionalFields() {
return Collections.unmodifiableSet(EnumSet.of(URIishField.PORT));
}
public int getDefaultPort() {
return GIT_PORT;
}
public Transport open(URIish uri, Repository local, String remoteName)
throws NotSupportedException {
return new TransportGitAnon(local, uri);
}
};
TransportGitAnon(final Repository local, final URIish uri) {
super(local, uri);
}
@Override
public FetchConnection openFetch() throws TransportException {
return new TcpFetchConnection();
}
@Override
public PushConnection openPush() throws TransportException {
return new TcpPushConnection();
}
@Override
public void close() {
// Resources must be established per-connection.
}
Socket openConnection() throws TransportException {
final int tms = getTimeout() > 0 ? getTimeout() * 1000 : 0;
final int port = uri.getPort() > 0 ? uri.getPort() : GIT_PORT;
final Socket s = new Socket();
try {
final InetAddress host = InetAddress.getByName(uri.getHost());
s.bind(null);
s.connect(new InetSocketAddress(host, port), tms);
} catch (IOException c) {
try {
s.close();
} catch (IOException closeErr) {
// ignore a failure during close, we're already failing
}
if (c instanceof UnknownHostException)
throw new TransportException(uri, JGitText.get().unknownHost);
if (c instanceof ConnectException)
throw new TransportException(uri, c.getMessage());
throw new TransportException(uri, c.getMessage(), c);
}
return s;
}
void service(final String name, final PacketLineOut pckOut)
throws IOException {
final StringBuilder cmd = new StringBuilder();
cmd.append(name);
cmd.append(' ');
cmd.append(uri.getPath());
cmd.append('\0');
cmd.append("host=");
cmd.append(uri.getHost());
if (uri.getPort() > 0 && uri.getPort() != GIT_PORT) {
cmd.append(":");
cmd.append(uri.getPort());
}
cmd.append('\0');
pckOut.writeString(cmd.toString());
pckOut.flush();
}
class TcpFetchConnection extends BasePackFetchConnection {
private Socket sock;
TcpFetchConnection() throws TransportException {
super(TransportGitAnon.this);
sock = openConnection();
try {
InputStream sIn = sock.getInputStream();
OutputStream sOut = sock.getOutputStream();
sIn = new BufferedInputStream(sIn);
sOut = new SafeBufferedOutputStream(sOut);
init(sIn, sOut);
service("git-upload-pack", pckOut);
} catch (IOException err) {
close();
throw new TransportException(uri,
JGitText.get().remoteHungUpUnexpectedly, err);
}
readAdvertisedRefs();
}
@Override
public void close() {
super.close();
if (sock != null) {
try {
sock.close();
} catch (IOException err) {
// Ignore errors during close.
} finally {
sock = null;
}
}
}
}
class TcpPushConnection extends BasePackPushConnection {
private Socket sock;
TcpPushConnection() throws TransportException {
super(TransportGitAnon.this);
sock = openConnection();
try {
InputStream sIn = sock.getInputStream();
OutputStream sOut = sock.getOutputStream();
sIn = new BufferedInputStream(sIn);
sOut = new SafeBufferedOutputStream(sOut);
init(sIn, sOut);
service("git-receive-pack", pckOut);
} catch (IOException err) {
close();
throw new TransportException(uri,
JGitText.get().remoteHungUpUnexpectedly, err);
}
readAdvertisedRefs();
}
@Override
public void close() {
super.close();
if (sock != null) {
try {
sock.close();
} catch (IOException err) {
// Ignore errors during close.
} finally {
sock = null;
}
}
}
}
}