Signed-off-by: Daniel Cheng (aka SDiZ) <j16sdiz+freenet@xxxxxxxxx>
---
.../src/org/spearce/jgit/transport/Transport.java | 3 +
.../org/spearce/jgit/transport/TransportFcp2.java | 436 ++++++++++++++++++++
2 files changed, 439 insertions(+), 0 deletions(-)
create mode 100644 org.spearce.jgit/src/org/spearce/jgit/transport/TransportFcp2.java
diff --git a/org.spearce.jgit/src/org/spearce/jgit/transport/Transport.java b/org.spearce.jgit/src/org/spearce/jgit/transport/Transport.java
index a0a2575..3fc1735 100644
--- a/org.spearce.jgit/src/org/spearce/jgit/transport/Transport.java
+++ b/org.spearce.jgit/src/org/spearce/jgit/transport/Transport.java
@@ -206,6 +206,9 @@ else if (TransportGitAnon.canHandle(remote))
else if (TransportAmazonS3.canHandle(remote))
return new TransportAmazonS3(local, remote);
+ else if (TransportFcp2.canHandle(remote))
+ return new TransportFcp2(local, remote);
+
else if (TransportBundleFile.canHandle(remote))
return new TransportBundleFile(local, remote);
diff --git a/org.spearce.jgit/src/org/spearce/jgit/transport/TransportFcp2.java b/org.spearce.jgit/src/org/spearce/jgit/transport/TransportFcp2.java
new file mode 100644
index 0000000..ed12995
--- /dev/null
+++ b/org.spearce.jgit/src/org/spearce/jgit/transport/TransportFcp2.java
@@ -0,0 +1,436 @@
+/*
+ * Copyright (C) 2009, CHENG Yuk-Pong, Daniel <j16sdiz+freenet@xxxxxxxxx>
+ * Copyright (C) 2008, Shawn O. Pearce <spearce@xxxxxxxxxxx>
+ *
+ * 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 Git Development Community 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.spearce.jgit.transport;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.URISyntaxException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Map;
+import java.util.TreeMap;
+
+import org.spearce.jgit.errors.NotSupportedException;
+import org.spearce.jgit.errors.PackProtocolException;
+import org.spearce.jgit.errors.TransportException;
+import org.spearce.jgit.lib.Constants;
+import org.spearce.jgit.lib.NullProgressMonitor;
+import org.spearce.jgit.lib.ObjectId;
+import org.spearce.jgit.lib.ProgressMonitor;
+import org.spearce.jgit.lib.Ref;
+import org.spearce.jgit.lib.Repository;
+import org.spearce.jgit.lib.Ref.Storage;
+import org.spearce.jgit.transport.fcpv2.FCPConnection;
+
+/**
+ * Transport over Freenet Client Protocol 2.0
+ * <p>
+ * The Freenet transport is similar to HTTP Transport, but more restrictive. To
+ * workaround the freenet restrictions, path separator ('/') are replaced with
+ * dash ('-').
+ *<p>
+ * URI are in forms of <code>fcp://USK@PUBLIC_KEY/identifier</code> (read-only)
+ * or <code>fcp://USK@PUBLIC_KEY^PRIVATE_KEY/identifier</code>. The identifier
+ * must not contain any slash. The Freenet URI should begin with
+ * <code>SSK@</code>, all updatable component are converted to <code>USK@</code>
+ * internally.
+ *
+ * @see WalkFetchConnection
+ */
+class TransportFcp2 extends WalkTransport {
+ static boolean canHandle(final URIish uri) {
+ if (!uri.isRemote())
+ return false;
+ final String s = uri.getScheme();
+ return "fcp".equals(s);
+ }
+
+ private final String publicKey;
+
+ private final String privateKey;
+
+ private final String identifier;
+
+ private FCPConnection fcp;
+
+ TransportFcp2(final Repository local, final URIish uri)
+ throws NotSupportedException {
+ super(local, uri);
+
+ String uriString = uri.toString();
+ if (!uriString.startsWith("fcp://SSK@"))
+ throw new NotSupportedException("URL not SSK@ " + uri);
+
+ String[] uriSegment = uriString.split("\\/");
+ if (uriSegment.length != 4)
+ throw new NotSupportedException("Invalid URL " + uri);
+
+ String[] keys = uriSegment[2].split("\\^");
+ if (keys.length > 2)
+ throw new NotSupportedException("Invalid URL " + uri);
+ publicKey = keys[0].substring(4); // Remove 'SSK@' prefix
+ privateKey = (keys.length == 2) ? keys[1] : null;
+ System.out.println(privateKey);
+ identifier = uriSegment[3];
+ }
+
+ @Override
+ public FetchConnection openFetch() throws TransportException {
+ try {
+ fcp = new FCPConnection();
+ fcp.connect();
+ fcp.hello("JGit-" + toString());
+
+ final Fcp2ObjectDB c = new Fcp2ObjectDB("/objects", false);
+ final WalkFetchConnection r = new WalkFetchConnection(this, c);
+ r.available(c.readAdvertisedRefs());
+ return r;
+ } catch (IOException e) {
+ throw new TransportException("IO Error" + e, e);
+ }
+ }
+
+ @Override
+ public PushConnection openPush() throws TransportException {
+ try {
+ fcp = new FCPConnection();
+ fcp.connect();
+ fcp.hello("JGit-" + toString());
+
+ final Fcp2ObjectDB c = new Fcp2ObjectDB("/objects", false);
+ final WalkPushConnection r = new WalkPushConnection(this, c);
+ r.available(c.readAdvertisedRefs());
+ return r;
+ } catch (IOException e) {
+ throw new TransportException("IO Error" + e, e);
+ }
+ }
+
+ @Override
+ public void close() {
+ try {
+ if (fcp != null)
+ fcp.close();
+ } catch (IOException e) {
+ // Fall through.
+ }
+ fcp = null;
+ }
+
+ class Fcp2ObjectDB extends WalkRemoteObjectDatabase {
+ private final String path;
+ private boolean useArchive;
+
+ @Override
+ void deleteFile(String path) throws IOException {
+ // TODO Auto-generated method stub
+ super.deleteFile(path);
+ }
+
+ @Override
+ OutputStream writeFile(String path, ProgressMonitor monitor,
+ String monitorTask) throws IOException {
+ System.err.println(" write -> " + path);
+ return new FcpOutputStream(path, monitor, monitorTask);
+ }
+
+ class FcpOutputStream extends OutputStream {
+ ByteArrayOutputStream os = new ByteArrayOutputStream();
+
+ private String path;
+
+ private ProgressMonitor monitor;
+
+ private String monitorTask;
+
+ public FcpOutputStream(String path, ProgressMonitor monitor,
+ String monitorTask) {
+ if (monitor == null)
+ monitor = NullProgressMonitor.INSTANCE;
+ if (monitorTask == null)
+ monitorTask = "Uploading " + path;
+
+ this.path = path;
+ this.monitor = monitor;
+ this.monitorTask = monitorTask;
+ }
+
+ @Override
+ public void write(int b) throws IOException {
+ os.write(b);
+ }
+
+ @Override
+ public void close() throws IOException {
+ byte[] b = os.toByteArray();
+ os = null;
+
+ fcp.simplePut(getFreenetURI(path, true), b, monitor,
+ monitorTask);
+ }
+ }
+
+ Fcp2ObjectDB(String path, boolean useArchive) {
+ if (path.endsWith("/"))
+ path = path.substring(0, path.length() - 1);
+ if (!path.startsWith("/"))
+ path = "/" + path;
+ this.path = path;
+ this.useArchive = useArchive;
+ }
+
+ private String resolveKey(String subpath) {
+ if (subpath.endsWith("/"))
+ subpath = subpath.substring(0, subpath.length() - 1);
+ String k = path;
+ while (subpath.startsWith(ROOT_DIR)) {
+ k = k.substring(0, k.lastIndexOf('/'));
+ subpath = subpath.substring(3);
+ }
+ return k + "/" + subpath;
+ }
+
+ @Override
+ URIish getURI() {
+ try {
+ // just a pseudo-URIish for logging, not really supported
+ return new URIish("fcp://SSK@" + publicKey + "/" + identifier
+ + path);
+ } catch (URISyntaxException e) {
+ return null;
+ }
+ }
+
+ @Override
+ Collection<WalkRemoteObjectDatabase> getAlternates() throws IOException {
+ if (!useArchive) // try to use archive
+ return java.util.Arrays.asList(
+ new WalkRemoteObjectDatabase[] { new Fcp2ObjectDB(path, true) } );
+ return null;
+ }
+
+ @Override
+ WalkRemoteObjectDatabase openAlternate(final String location)
+ throws IOException {
+ return null;
+ }
+
+ @Override
+ Collection<String> getPackNames() throws IOException {
+ final Collection<String> packs = new ArrayList<String>();
+ 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"))
+ 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 {
+ System.err.println(" read -> " + path);
+ byte[] b = fcp.simpleGet(getFreenetURI(path, false));
+ if (b == null)
+ throw new FileNotFoundException();
+
+ ByteArrayInputStream is = new ByteArrayInputStream(b);
+ return new FileStream(is);
+ }
+
+ private String getFreenetURI(final String path, boolean push) {
+ String key = push ? privateKey : publicKey;
+ String fPath = resolveKey(path);
+ String ret;
+
+ if (useArchive)
+ ret = "USK@" + key + "/" + identifier + "/1/" + fPath;
+ else
+ ret = "USK@" + key + "/" + identifier + fPath.replaceAll("\\/", "-") + "/1/";
+
+ System.err.println(ret);
+ return ret;
+ }
+
+ Map<String, Ref> readAdvertisedRefs() throws TransportException {
+ final TreeMap<String, Ref> avail = new TreeMap<String, Ref>();
+ try {
+ readPackedRefs(avail);
+ } catch (TransportException t) {}
+ try {
+ readInfoRefs(avail);
+ } catch (TransportException t) {}
+ try {
+ readRef(avail, Constants.HEAD);
+ } catch (TransportException t) {}
+
+ if (avail.isEmpty() && !useArchive) {
+ return new Fcp2ObjectDB(path, true).readAdvertisedRefs();
+ }
+
+ return avail;
+ }
+
+ private Map<String, Ref> readInfoRefs(TreeMap<String, Ref> avail)
+ throws TransportException {
+ try {
+ final BufferedReader br = openReader(INFO_REFS);
+ 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("^{}")) {
+ 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 + "^{}");
+
+ avail.put(name, new Ref(Ref.Storage.NETWORK, name,
+ prior.getObjectId(), id, true));
+ } else {
+ final Ref prior = avail.put(name, new Ref(
+ Ref.Storage.NETWORK, name, id));
+ if (prior != null)
+ throw duplicateAdvertisement(name);
+ }
+ }
+ return avail;
+ } catch (IOException err) {
+ throw new TransportException(INFO_REFS
+ + ": cannot read available refs", err);
+ }
+ }
+
+ private PackProtocolException outOfOrderAdvertisement(final String n) {
+ return new PackProtocolException("advertisement of " + n
+ + "^{} came before " + n);
+ }
+
+ private PackProtocolException duplicateAdvertisement(final String n) {
+ return new PackProtocolException("duplicate advertisements of " + n);
+ }
+
+ private Ref readRef(final TreeMap<String, Ref> avail, final String rn)
+ throws TransportException {
+ final String s;
+ String ref = ROOT_DIR + rn;
+ try {
+ final BufferedReader br = openReader(ref);
+ try {
+ s = br.readLine();
+ } finally {
+ br.close();
+ }
+ } catch (FileNotFoundException noRef) {
+ return null;
+ } catch (IOException err) {
+ throw new TransportException(getURI(), "read " + ref, err);
+ }
+
+ if (s == null)
+ throw new TransportException(getURI(), "Empty ref: " + rn);
+
+ if (s.startsWith("ref: ")) {
+ final String target = s.substring("ref: ".length());
+ Ref r = avail.get(target);
+ if (r == null)
+ r = readRef(avail, target);
+ if (r == null)
+ return null;
+ r = new Ref(r.getStorage(), rn, r.getObjectId(), r
+ .getPeeledObjectId(), r.isPeeled());
+ avail.put(r.getName(), r);
+ return r;
+ }
+
+ if (ObjectId.isId(s)) {
+ // FIXME this does not really works
+ final Ref r = new Ref(loose(avail.get(rn)), rn, ObjectId
+ .fromString(s));
+ avail.put(r.getName(), r);
+ return r;
+ }
+
+ throw new TransportException(getURI(), "Bad ref: " + rn + ": " + s);
+ }
+
+ private Storage loose(final Ref r) {
+ if (r != null && r.getStorage() == Storage.PACKED)
+ return Storage.LOOSE_PACKED;
+ return Storage.LOOSE;
+ }
+
+ private PackProtocolException invalidAdvertisement(final String n) {
+ return new PackProtocolException("invalid advertisement of " + n);
+ }
+
+ @Override
+ void close() {
+ // We do not maintain persistent connections.
+ }
+ }
+}
--
1.6.2.rc2
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