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Diffstat (limited to 'org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java')
| -rw-r--r-- | org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java | 1601 |
1 files changed, 0 insertions, 1601 deletions
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java deleted file mode 100644 index eb770125c1..0000000000 --- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BaseReceivePack.java +++ /dev/null @@ -1,1601 +0,0 @@ -/* - * Copyright (C) 2008-2010, Google Inc. - * 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.transport.GitProtocolConstants.CAPABILITY_ATOMIC; -import static org.eclipse.jgit.transport.GitProtocolConstants.CAPABILITY_DELETE_REFS; -import static org.eclipse.jgit.transport.GitProtocolConstants.CAPABILITY_OFS_DELTA; -import static org.eclipse.jgit.transport.GitProtocolConstants.CAPABILITY_QUIET; -import static org.eclipse.jgit.transport.GitProtocolConstants.CAPABILITY_REPORT_STATUS; -import static org.eclipse.jgit.transport.GitProtocolConstants.CAPABILITY_SIDE_BAND_64K; -import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_AGENT; -import static org.eclipse.jgit.transport.SideBandOutputStream.CH_DATA; -import static org.eclipse.jgit.transport.SideBandOutputStream.CH_PROGRESS; -import static org.eclipse.jgit.transport.SideBandOutputStream.MAX_BUF; - -import java.io.EOFException; -import java.io.IOException; -import java.io.InputStream; -import java.io.OutputStream; -import java.text.MessageFormat; -import java.util.ArrayList; -import java.util.Collections; -import java.util.HashSet; -import java.util.List; -import java.util.Map; -import java.util.Set; -import java.util.concurrent.TimeUnit; - -import org.eclipse.jgit.errors.MissingObjectException; -import org.eclipse.jgit.errors.PackProtocolException; -import org.eclipse.jgit.errors.TooLargePackException; -import org.eclipse.jgit.internal.JGitText; -import org.eclipse.jgit.internal.storage.file.PackLock; -import org.eclipse.jgit.lib.BatchRefUpdate; -import org.eclipse.jgit.lib.Config; -import org.eclipse.jgit.lib.Config.SectionParser; -import org.eclipse.jgit.lib.Constants; -import org.eclipse.jgit.lib.NullProgressMonitor; -import org.eclipse.jgit.lib.ObjectChecker; -import org.eclipse.jgit.lib.ObjectId; -import org.eclipse.jgit.lib.ObjectIdSubclassMap; -import org.eclipse.jgit.lib.ObjectInserter; -import org.eclipse.jgit.lib.PersonIdent; -import org.eclipse.jgit.lib.ProgressMonitor; -import org.eclipse.jgit.lib.Ref; -import org.eclipse.jgit.lib.Repository; -import org.eclipse.jgit.revwalk.ObjectWalk; -import org.eclipse.jgit.revwalk.RevBlob; -import org.eclipse.jgit.revwalk.RevCommit; -import org.eclipse.jgit.revwalk.RevFlag; -import org.eclipse.jgit.revwalk.RevObject; -import org.eclipse.jgit.revwalk.RevSort; -import org.eclipse.jgit.revwalk.RevTree; -import org.eclipse.jgit.revwalk.RevWalk; -import org.eclipse.jgit.transport.ReceiveCommand.Result; -import org.eclipse.jgit.util.io.InterruptTimer; -import org.eclipse.jgit.util.io.LimitedInputStream; -import org.eclipse.jgit.util.io.TimeoutInputStream; -import org.eclipse.jgit.util.io.TimeoutOutputStream; - -/** - * Base implementation of the side of a push connection that receives objects. - * <p> - * Contains high-level operations for initializing and closing streams, - * advertising refs, reading commands, and receiving and applying a pack. - * Subclasses compose these operations into full service implementations. - */ -public abstract class BaseReceivePack { - /** Data in the first line of a request, the line itself plus capabilities. */ - public static class FirstLine { - private final String line; - private final Set<String> capabilities; - - /** - * Parse the first line of a receive-pack request. - * - * @param line - * line from the client. - */ - public FirstLine(String line) { - final HashSet<String> caps = new HashSet<String>(); - final int nul = line.indexOf('\0'); - if (nul >= 0) { - for (String c : line.substring(nul + 1).split(" ")) //$NON-NLS-1$ - caps.add(c); - this.line = line.substring(0, nul); - } else - this.line = line; - this.capabilities = Collections.unmodifiableSet(caps); - } - - /** @return non-capabilities part of the line. */ - public String getLine() { - return line; - } - - /** @return capabilities parsed from the line. */ - public Set<String> getCapabilities() { - return capabilities; - } - } - - /** Database we write the stored objects into. */ - private final Repository db; - - /** Revision traversal support over {@link #db}. */ - private final RevWalk walk; - - /** - * Is the client connection a bi-directional socket or pipe? - * <p> - * If true, this class assumes it can perform multiple read and write cycles - * with the client over the input and output streams. This matches the - * functionality available with a standard TCP/IP connection, or a local - * operating system or in-memory pipe. - * <p> - * If false, this class runs in a read everything then output results mode, - * making it suitable for single round-trip systems RPCs such as HTTP. - */ - private boolean biDirectionalPipe = true; - - /** Expecting data after the pack footer */ - private boolean expectDataAfterPackFooter; - - /** Should an incoming transfer validate objects? */ - private ObjectChecker objectChecker; - - /** Should an incoming transfer permit create requests? */ - private boolean allowCreates; - - /** Should an incoming transfer permit delete requests? */ - private boolean allowAnyDeletes; - private boolean allowBranchDeletes; - - /** Should an incoming transfer permit non-fast-forward requests? */ - private boolean allowNonFastForwards; - - private boolean allowOfsDelta; - private boolean allowQuiet = true; - - /** Identity to record action as within the reflog. */ - private PersonIdent refLogIdent; - - /** Hook used while advertising the refs to the client. */ - private AdvertiseRefsHook advertiseRefsHook; - - /** Filter used while advertising the refs to the client. */ - private RefFilter refFilter; - - /** Timeout in seconds to wait for client interaction. */ - private int timeout; - - /** Timer to manage {@link #timeout}. */ - private InterruptTimer timer; - - private TimeoutInputStream timeoutIn; - - // Original stream passed to init(), since rawOut may be wrapped in a - // sideband. - private OutputStream origOut; - - /** Raw input stream. */ - protected InputStream rawIn; - - /** Raw output stream. */ - protected OutputStream rawOut; - - /** Optional message output stream. */ - protected OutputStream msgOut; - - /** Packet line input stream around {@link #rawIn}. */ - protected PacketLineIn pckIn; - - /** Packet line output stream around {@link #rawOut}. */ - protected PacketLineOut pckOut; - - private final MessageOutputWrapper msgOutWrapper = new MessageOutputWrapper(); - - private PackParser parser; - - /** The refs we advertised as existing at the start of the connection. */ - private Map<String, Ref> refs; - - /** All SHA-1s shown to the client, which can be possible edges. */ - private Set<ObjectId> advertisedHaves; - - /** Capabilities requested by the client. */ - private Set<String> enabledCapabilities; - String userAgent; - private Set<ObjectId> clientShallowCommits; - private List<ReceiveCommand> commands; - - private StringBuilder advertiseError; - - /** If {@link BasePackPushConnection#CAPABILITY_SIDE_BAND_64K} is enabled. */ - private boolean sideBand; - - private boolean quiet; - - /** Lock around the received pack file, while updating refs. */ - private PackLock packLock; - - private boolean checkReferencedIsReachable; - - /** Git object size limit */ - private long maxObjectSizeLimit; - - /** Total pack size limit */ - private long maxPackSizeLimit = -1; - - /** The size of the received pack, including index size */ - private Long packSize; - - PushCertificateParser pushCertificateParser; - - /** - * @return the push certificate used to verify the pushers identity. - */ - PushCertificate getPushCertificate() { - return pushCertificateParser; - } - - /** - * Create a new pack receive for an open repository. - * - * @param into - * the destination repository. - */ - protected BaseReceivePack(final Repository into) { - db = into; - walk = new RevWalk(db); - - final ReceiveConfig cfg = db.getConfig().get(ReceiveConfig.KEY); - objectChecker = cfg.newObjectChecker(); - allowCreates = cfg.allowCreates; - allowAnyDeletes = true; - allowBranchDeletes = cfg.allowDeletes; - allowNonFastForwards = cfg.allowNonFastForwards; - allowOfsDelta = cfg.allowOfsDelta; - advertiseRefsHook = AdvertiseRefsHook.DEFAULT; - refFilter = RefFilter.DEFAULT; - advertisedHaves = new HashSet<ObjectId>(); - clientShallowCommits = new HashSet<ObjectId>(); - pushCertificateParser = new PushCertificateParser(db, cfg); - } - - /** Configuration for receive operations. */ - protected static class ReceiveConfig { - static final SectionParser<ReceiveConfig> KEY = new SectionParser<ReceiveConfig>() { - public ReceiveConfig parse(final Config cfg) { - return new ReceiveConfig(cfg); - } - }; - - final boolean checkReceivedObjects; - final boolean allowLeadingZeroFileMode; - final boolean allowInvalidPersonIdent; - final boolean safeForWindows; - final boolean safeForMacOS; - - final boolean allowCreates; - final boolean allowDeletes; - final boolean allowNonFastForwards; - final boolean allowOfsDelta; - - final String certNonceSeed; - final int certNonceSlopLimit; - - ReceiveConfig(final Config config) { - checkReceivedObjects = config.getBoolean( - "receive", "fsckobjects", //$NON-NLS-1$ //$NON-NLS-2$ - config.getBoolean("transfer", "fsckobjects", false)); //$NON-NLS-1$ //$NON-NLS-2$ - allowLeadingZeroFileMode = checkReceivedObjects - && config.getBoolean("fsck", "allowLeadingZeroFileMode", false); //$NON-NLS-1$ //$NON-NLS-2$ - allowInvalidPersonIdent = checkReceivedObjects - && config.getBoolean("fsck", "allowInvalidPersonIdent", false); //$NON-NLS-1$ //$NON-NLS-2$ - safeForWindows = checkReceivedObjects - && config.getBoolean("fsck", "safeForWindows", false); //$NON-NLS-1$ //$NON-NLS-2$ - safeForMacOS = checkReceivedObjects - && config.getBoolean("fsck", "safeForMacOS", false); //$NON-NLS-1$ //$NON-NLS-2$ - - allowCreates = true; - allowDeletes = !config.getBoolean("receive", "denydeletes", false); //$NON-NLS-1$ //$NON-NLS-2$ - allowNonFastForwards = !config.getBoolean("receive", //$NON-NLS-1$ - "denynonfastforwards", false); //$NON-NLS-1$ - allowOfsDelta = config.getBoolean("repack", "usedeltabaseoffset", //$NON-NLS-1$ //$NON-NLS-2$ - true); - certNonceSeed = config.getString("receive", null, "certnonceseed"); //$NON-NLS-1$ //$NON-NLS-2$ - certNonceSlopLimit = config.getInt("receive", "certnonceslop", 0); //$NON-NLS-1$ //$NON-NLS-2$ - } - - ObjectChecker newObjectChecker() { - if (!checkReceivedObjects) - return null; - return new ObjectChecker() - .setAllowLeadingZeroFileMode(allowLeadingZeroFileMode) - .setAllowInvalidPersonIdent(allowInvalidPersonIdent) - .setSafeForWindows(safeForWindows) - .setSafeForMacOS(safeForMacOS); - } - } - - /** - * Output stream that wraps the current {@link #msgOut}. - * <p> - * We don't want to expose {@link #msgOut} directly because it can change - * several times over the course of a session. - */ - class MessageOutputWrapper extends OutputStream { - @Override - public void write(int ch) { - if (msgOut != null) { - try { - msgOut.write(ch); - } catch (IOException e) { - // Ignore write failures. - } - } - } - - @Override - public void write(byte[] b, int off, int len) { - if (msgOut != null) { - try { - msgOut.write(b, off, len); - } catch (IOException e) { - // Ignore write failures. - } - } - } - - @Override - public void write(byte[] b) { - write(b, 0, b.length); - } - - @Override - public void flush() { - if (msgOut != null) { - try { - msgOut.flush(); - } catch (IOException e) { - // Ignore write failures. - } - } - } - } - - /** @return the process name used for pack lock messages. */ - protected abstract String getLockMessageProcessName(); - - /** @return the repository this receive completes into. */ - public final Repository getRepository() { - return db; - } - - /** @return the RevWalk instance used by this connection. */ - public final RevWalk getRevWalk() { - return walk; - } - - /** - * Get refs which were advertised to the client. - * - * @return all refs which were advertised to the client, or null if - * {@link #setAdvertisedRefs(Map, Set)} has not been called yet. - */ - public final Map<String, Ref> getAdvertisedRefs() { - return refs; - } - - /** - * Set the refs advertised by this ReceivePack. - * <p> - * Intended to be called from a {@link PreReceiveHook}. - * - * @param allRefs - * explicit set of references to claim as advertised by this - * ReceivePack instance. This overrides any references that - * may exist in the source repository. The map is passed - * to the configured {@link #getRefFilter()}. If null, assumes - * all refs were advertised. - * @param additionalHaves - * explicit set of additional haves to claim as advertised. If - * null, assumes the default set of additional haves from the - * repository. - */ - public void setAdvertisedRefs(Map<String, Ref> allRefs, Set<ObjectId> additionalHaves) { - refs = allRefs != null ? allRefs : db.getAllRefs(); - refs = refFilter.filter(refs); - - Ref head = refs.get(Constants.HEAD); - if (head != null && head.isSymbolic()) - refs.remove(Constants.HEAD); - - for (Ref ref : refs.values()) { - if (ref.getObjectId() != null) - advertisedHaves.add(ref.getObjectId()); - } - if (additionalHaves != null) - advertisedHaves.addAll(additionalHaves); - else - advertisedHaves.addAll(db.getAdditionalHaves()); - } - - /** - * Get objects advertised to the client. - * - * @return the set of objects advertised to the as present in this repository, - * or null if {@link #setAdvertisedRefs(Map, Set)} has not been called - * yet. - */ - public final Set<ObjectId> getAdvertisedObjects() { - return advertisedHaves; - } - - /** - * @return true if this instance will validate all referenced, but not - * supplied by the client, objects are reachable from another - * reference. - */ - public boolean isCheckReferencedObjectsAreReachable() { - return checkReferencedIsReachable; - } - - /** - * Validate all referenced but not supplied objects are reachable. - * <p> - * If enabled, this instance will verify that references to objects not - * contained within the received pack are already reachable through at least - * one other reference displayed as part of {@link #getAdvertisedRefs()}. - * <p> - * This feature is useful when the application doesn't trust the client to - * not provide a forged SHA-1 reference to an object, in an attempt to - * access parts of the DAG that they aren't allowed to see and which have - * been hidden from them via the configured {@link AdvertiseRefsHook} or - * {@link RefFilter}. - * <p> - * Enabling this feature may imply at least some, if not all, of the same - * functionality performed by {@link #setCheckReceivedObjects(boolean)}. - * Applications are encouraged to enable both features, if desired. - * - * @param b - * {@code true} to enable the additional check. - */ - public void setCheckReferencedObjectsAreReachable(boolean b) { - this.checkReferencedIsReachable = b; - } - - /** - * @return true if this class expects a bi-directional pipe opened between - * the client and itself. The default is true. - */ - public boolean isBiDirectionalPipe() { - return biDirectionalPipe; - } - - /** - * @param twoWay - * if true, this class will assume the socket is a fully - * bidirectional pipe between the two peers and takes advantage - * of that by first transmitting the known refs, then waiting to - * read commands. If false, this class assumes it must read the - * commands before writing output and does not perform the - * initial advertising. - */ - public void setBiDirectionalPipe(final boolean twoWay) { - biDirectionalPipe = twoWay; - } - - /** @return true if there is data expected after the pack footer. */ - public boolean isExpectDataAfterPackFooter() { - return expectDataAfterPackFooter; - } - - /** - * @param e - * true if there is additional data in InputStream after pack. - */ - public void setExpectDataAfterPackFooter(boolean e) { - expectDataAfterPackFooter = e; - } - - /** - * @return true if this instance will verify received objects are formatted - * correctly. Validating objects requires more CPU time on this side - * of the connection. - */ - public boolean isCheckReceivedObjects() { - return objectChecker != null; - } - - /** - * @param check - * true to enable checking received objects; false to assume all - * received objects are valid. - * @see #setObjectChecker(ObjectChecker) - */ - public void setCheckReceivedObjects(final boolean check) { - if (check && objectChecker == null) - setObjectChecker(new ObjectChecker()); - else if (!check && objectChecker != null) - setObjectChecker(null); - } - - /** - * @param impl if non-null the object checking instance to verify each - * received object with; null to disable object checking. - * @since 3.4 - */ - public void setObjectChecker(ObjectChecker impl) { - objectChecker = impl; - } - - /** @return true if the client can request refs to be created. */ - public boolean isAllowCreates() { - return allowCreates; - } - - /** - * @param canCreate - * true to permit create ref commands to be processed. - */ - public void setAllowCreates(final boolean canCreate) { - allowCreates = canCreate; - } - - /** @return true if the client can request refs to be deleted. */ - public boolean isAllowDeletes() { - return allowAnyDeletes; - } - - /** - * @param canDelete - * true to permit delete ref commands to be processed. - */ - public void setAllowDeletes(final boolean canDelete) { - allowAnyDeletes = canDelete; - } - - /** - * @return true if the client can delete from {@code refs/heads/}. - * @since 3.6 - */ - public boolean isAllowBranchDeletes() { - return allowBranchDeletes; - } - - /** - * @param canDelete - * true to permit deletion of branches from the - * {@code refs/heads/} namespace. - * @since 3.6 - */ - public void setAllowBranchDeletes(boolean canDelete) { - allowBranchDeletes = canDelete; - } - - /** - * @return true if the client can request non-fast-forward updates of a ref, - * possibly making objects unreachable. - */ - public boolean isAllowNonFastForwards() { - return allowNonFastForwards; - } - - /** - * @param canRewind - * true to permit the client to ask for non-fast-forward updates - * of an existing ref. - */ - public void setAllowNonFastForwards(final boolean canRewind) { - allowNonFastForwards = canRewind; - } - - /** @return identity of the user making the changes in the reflog. */ - public PersonIdent getRefLogIdent() { - return refLogIdent; - } - - /** - * Set the identity of the user appearing in the affected reflogs. - * <p> - * The timestamp portion of the identity is ignored. A new identity with the - * current timestamp will be created automatically when the updates occur - * and the log records are written. - * - * @param pi - * identity of the user. If null the identity will be - * automatically determined based on the repository - * configuration. - */ - public void setRefLogIdent(final PersonIdent pi) { - refLogIdent = pi; - } - - /** @return the hook used while advertising the refs to the client */ - public AdvertiseRefsHook getAdvertiseRefsHook() { - return advertiseRefsHook; - } - - /** @return the filter used while advertising the refs to the client */ - public RefFilter getRefFilter() { - return refFilter; - } - - /** - * Set the hook used while advertising the refs to the client. - * <p> - * If the {@link AdvertiseRefsHook} chooses to call - * {@link #setAdvertisedRefs(Map,Set)}, only refs set by this hook - * <em>and</em> selected by the {@link RefFilter} will be shown to the client. - * Clients may still attempt to create or update a reference not advertised by - * the configured {@link AdvertiseRefsHook}. These attempts should be rejected - * by a matching {@link PreReceiveHook}. - * - * @param advertiseRefsHook - * the hook; may be null to show all refs. - */ - public void setAdvertiseRefsHook(final AdvertiseRefsHook advertiseRefsHook) { - if (advertiseRefsHook != null) - this.advertiseRefsHook = advertiseRefsHook; - else - this.advertiseRefsHook = AdvertiseRefsHook.DEFAULT; - } - - /** - * Set the filter used while advertising the refs to the client. - * <p> - * Only refs allowed by this filter will be shown to the client. - * The filter is run against the refs specified by the - * {@link AdvertiseRefsHook} (if applicable). - * - * @param refFilter - * the filter; may be null to show all refs. - */ - public void setRefFilter(final RefFilter refFilter) { - this.refFilter = refFilter != null ? refFilter : RefFilter.DEFAULT; - } - - /** @return timeout (in seconds) before aborting an IO operation. */ - public int getTimeout() { - return timeout; - } - - /** - * Set the timeout before willing to abort an IO call. - * - * @param seconds - * number of seconds to wait (with no data transfer occurring) - * before aborting an IO read or write operation with the - * connected client. - */ - public void setTimeout(final int seconds) { - timeout = seconds; - } - - /** - * Set the maximum allowed Git object size. - * <p> - * If an object is larger than the given size the pack-parsing will throw an - * exception aborting the receive-pack operation. - * - * @param limit - * the Git object size limit. If zero then there is not limit. - */ - public void setMaxObjectSizeLimit(final long limit) { - maxObjectSizeLimit = limit; - } - - - /** - * Set the maximum allowed pack size. - * <p> - * A pack exceeding this size will be rejected. - * - * @param limit - * the pack size limit, in bytes - * - * @since 3.3 - */ - public void setMaxPackSizeLimit(final long limit) { - if (limit < 0) - throw new IllegalArgumentException(MessageFormat.format( - JGitText.get().receivePackInvalidLimit, Long.valueOf(limit))); - maxPackSizeLimit = limit; - } - - /** - * Check whether the client expects a side-band stream. - * - * @return true if the client has advertised a side-band capability, false - * otherwise. - * @throws RequestNotYetReadException - * if the client's request has not yet been read from the wire, so - * we do not know if they expect side-band. Note that the client - * may have already written the request, it just has not been - * read. - */ - public boolean isSideBand() throws RequestNotYetReadException { - if (enabledCapabilities == null) - throw new RequestNotYetReadException(); - return enabledCapabilities.contains(CAPABILITY_SIDE_BAND_64K); - } - - /** - * @return true if clients may request avoiding noisy progress messages. - * @since 4.0 - */ - public boolean isAllowQuiet() { - return allowQuiet; - } - - /** - * Configure if clients may request the server skip noisy messages. - * - * @param allow - * true to allow clients to request quiet behavior; false to - * refuse quiet behavior and send messages anyway. This may be - * necessary if processing is slow and the client-server network - * connection can timeout. - * @since 4.0 - */ - public void setAllowQuiet(boolean allow) { - allowQuiet = allow; - } - - /** - * True if the client wants less verbose output. - * - * @return true if the client has requested the server to be less verbose. - * @throws RequestNotYetReadException - * if the client's request has not yet been read from the wire, - * so we do not know if they expect side-band. Note that the - * client may have already written the request, it just has not - * been read. - * @since 4.0 - */ - public boolean isQuiet() throws RequestNotYetReadException { - if (enabledCapabilities == null) - throw new RequestNotYetReadException(); - return quiet; - } - - /** - * Get the user agent of the client. - * <p> - * If the client is new enough to use {@code agent=} capability that value - * will be returned. Older HTTP clients may also supply their version using - * the HTTP {@code User-Agent} header. The capability overrides the HTTP - * header if both are available. - * <p> - * When an HTTP request has been received this method returns the HTTP - * {@code User-Agent} header value until capabilities have been parsed. - * - * @return user agent supplied by the client. Available only if the client - * is new enough to advertise its user agent. - * @since 4.0 - */ - public String getPeerUserAgent() { - return UserAgent.getAgent(enabledCapabilities, userAgent); - } - - /** @return all of the command received by the current request. */ - public List<ReceiveCommand> getAllCommands() { - return Collections.unmodifiableList(commands); - } - - /** - * Send an error message to the client. - * <p> - * If any error messages are sent before the references are advertised to - * the client, the errors will be sent instead of the advertisement and the - * receive operation will be aborted. All clients should receive and display - * such early stage errors. - * <p> - * If the reference advertisements have already been sent, messages are sent - * in a side channel. If the client doesn't support receiving messages, the - * message will be discarded, with no other indication to the caller or to - * the client. - * <p> - * {@link PreReceiveHook}s should always try to use - * {@link ReceiveCommand#setResult(Result, String)} with a result status of - * {@link Result#REJECTED_OTHER_REASON} to indicate any reasons for - * rejecting an update. Messages attached to a command are much more likely - * to be returned to the client. - * - * @param what - * string describing the problem identified by the hook. The - * string must not end with an LF, and must not contain an LF. - */ - public void sendError(final String what) { - if (refs == null) { - if (advertiseError == null) - advertiseError = new StringBuilder(); - advertiseError.append(what).append('\n'); - } else { - msgOutWrapper.write(Constants.encode("error: " + what + "\n")); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - - /** - * Send a message to the client, if it supports receiving them. - * <p> - * If the client doesn't support receiving messages, the message will be - * discarded, with no other indication to the caller or to the client. - * - * @param what - * string describing the problem identified by the hook. The - * string must not end with an LF, and must not contain an LF. - */ - public void sendMessage(final String what) { - msgOutWrapper.write(Constants.encode(what + "\n")); //$NON-NLS-1$ - } - - /** @return an underlying stream for sending messages to the client. */ - public OutputStream getMessageOutputStream() { - return msgOutWrapper; - } - - /** - * Get the size of the received pack file including the index size. - * - * This can only be called if the pack is already received. - * - * @return the size of the received pack including index size - * @throws IllegalStateException - * if called before the pack has been received - * @since 3.3 - */ - public long getPackSize() { - if (packSize != null) - return packSize.longValue(); - throw new IllegalStateException(JGitText.get().packSizeNotSetYet); - } - - /** - * Get the commits from the client's shallow file. - * - * @return if the client is a shallow repository, the list of edge commits - * that define the client's shallow boundary. Empty set if the client - * is earlier than Git 1.9, or is a full clone. - * @since 3.5 - */ - protected Set<ObjectId> getClientShallowCommits() { - return clientShallowCommits; - } - - /** @return true if any commands to be executed have been read. */ - protected boolean hasCommands() { - return !commands.isEmpty(); - } - - /** @return true if an error occurred that should be advertised. */ - protected boolean hasError() { - return advertiseError != null; - } - - /** - * Initialize the instance with the given streams. - * - * @param input - * raw input to read client commands and pack data from. Caller - * must ensure the input is buffered, otherwise read performance - * may suffer. - * @param output - * response back to the Git network client. Caller must ensure - * the output is buffered, otherwise write performance may - * suffer. - * @param messages - * secondary "notice" channel to send additional messages out - * through. When run over SSH this should be tied back to the - * standard error channel of the command execution. For most - * other network connections this should be null. - */ - protected void init(final InputStream input, final OutputStream output, - final OutputStream messages) { - origOut = output; - rawIn = input; - rawOut = output; - msgOut = messages; - - if (timeout > 0) { - final Thread caller = Thread.currentThread(); - timer = new InterruptTimer(caller.getName() + "-Timer"); //$NON-NLS-1$ - timeoutIn = new TimeoutInputStream(rawIn, timer); - TimeoutOutputStream o = new TimeoutOutputStream(rawOut, timer); - timeoutIn.setTimeout(timeout * 1000); - o.setTimeout(timeout * 1000); - rawIn = timeoutIn; - rawOut = o; - } - - if (maxPackSizeLimit >= 0) - rawIn = new LimitedInputStream(rawIn, maxPackSizeLimit) { - @Override - protected void limitExceeded() throws TooLargePackException { - throw new TooLargePackException(limit); - } - }; - - pckIn = new PacketLineIn(rawIn); - pckOut = new PacketLineOut(rawOut); - pckOut.setFlushOnEnd(false); - - enabledCapabilities = new HashSet<String>(); - commands = new ArrayList<ReceiveCommand>(); - } - - /** @return advertised refs, or the default if not explicitly advertised. */ - protected Map<String, Ref> getAdvertisedOrDefaultRefs() { - if (refs == null) - setAdvertisedRefs(null, null); - return refs; - } - - /** - * Receive a pack from the stream and check connectivity if necessary. - * - * @throws IOException - * an error occurred during unpacking or connectivity checking. - */ - protected void receivePackAndCheckConnectivity() throws IOException { - receivePack(); - if (needCheckConnectivity()) - checkConnectivity(); - parser = null; - } - - /** - * Unlock the pack written by this object. - * - * @throws IOException - * the pack could not be unlocked. - */ - protected void unlockPack() throws IOException { - if (packLock != null) { - packLock.unlock(); - packLock = null; - } - } - - /** - * Generate an advertisement of available refs and capabilities. - * - * @param adv - * the advertisement formatter. - * @throws IOException - * the formatter failed to write an advertisement. - * @throws ServiceMayNotContinueException - * the hook denied advertisement. - */ - public void sendAdvertisedRefs(final RefAdvertiser adv) - throws IOException, ServiceMayNotContinueException { - if (advertiseError != null) { - adv.writeOne("ERR " + advertiseError); //$NON-NLS-1$ - return; - } - - try { - advertiseRefsHook.advertiseRefs(this); - } catch (ServiceMayNotContinueException fail) { - if (fail.getMessage() != null) { - adv.writeOne("ERR " + fail.getMessage()); //$NON-NLS-1$ - fail.setOutput(); - } - throw fail; - } - - adv.init(db); - adv.advertiseCapability(CAPABILITY_SIDE_BAND_64K); - adv.advertiseCapability(CAPABILITY_DELETE_REFS); - adv.advertiseCapability(CAPABILITY_REPORT_STATUS); - if (allowQuiet) - adv.advertiseCapability(CAPABILITY_QUIET); - if (pushCertificateParser.enabled()) - adv.advertiseCapability( - pushCertificateParser.getAdvertiseNonce()); - if (db.getRefDatabase().performsAtomicTransactions()) - adv.advertiseCapability(CAPABILITY_ATOMIC); - if (allowOfsDelta) - adv.advertiseCapability(CAPABILITY_OFS_DELTA); - adv.advertiseCapability(OPTION_AGENT, UserAgent.get()); - adv.send(getAdvertisedOrDefaultRefs()); - for (ObjectId obj : advertisedHaves) - adv.advertiseHave(obj); - if (adv.isEmpty()) - adv.advertiseId(ObjectId.zeroId(), "capabilities^{}"); //$NON-NLS-1$ - adv.end(); - } - - /** - * Receive a list of commands from the input. - * - * @throws IOException - */ - protected void recvCommands() throws IOException { - for (;;) { - String line; - try { - line = pckIn.readStringRaw(); - } catch (EOFException eof) { - if (commands.isEmpty()) - return; - throw eof; - } - if (line == PacketLineIn.END) - break; - - if (line.length() >= 48 && line.startsWith("shallow ")) { //$NON-NLS-1$ - clientShallowCommits.add(ObjectId.fromString(line.substring(8, 48))); - continue; - } - - if (commands.isEmpty()) { - final FirstLine firstLine = new FirstLine(line); - enabledCapabilities = firstLine.getCapabilities(); - line = firstLine.getLine(); - - if (line.equals(GitProtocolConstants.OPTION_PUSH_CERT)) - pushCertificateParser.receiveHeader(pckIn, - !isBiDirectionalPipe()); - } - - if (line.equals("-----BEGIN PGP SIGNATURE-----\n")) //$NON-NLS-1$ - pushCertificateParser.receiveSignature(pckIn); - - if (pushCertificateParser.enabled()) - pushCertificateParser.addCommand(line); - - if (line.length() < 83) { - final String m = JGitText.get().errorInvalidProtocolWantedOldNewRef; - sendError(m); - throw new PackProtocolException(m); - } - - final ObjectId oldId = ObjectId.fromString(line.substring(0, 40)); - final ObjectId newId = ObjectId.fromString(line.substring(41, 81)); - final String name = line.substring(82); - final ReceiveCommand cmd = new ReceiveCommand(oldId, newId, name); - if (name.equals(Constants.HEAD)) { - cmd.setResult(Result.REJECTED_CURRENT_BRANCH); - } else { - cmd.setRef(refs.get(cmd.getRefName())); - } - commands.add(cmd); - } - } - - /** Enable capabilities based on a previously read capabilities line. */ - protected void enableCapabilities() { - sideBand = isCapabilityEnabled(CAPABILITY_SIDE_BAND_64K); - quiet = allowQuiet && isCapabilityEnabled(CAPABILITY_QUIET); - if (sideBand) { - OutputStream out = rawOut; - - rawOut = new SideBandOutputStream(CH_DATA, MAX_BUF, out); - msgOut = new SideBandOutputStream(CH_PROGRESS, MAX_BUF, out); - - pckOut = new PacketLineOut(rawOut); - pckOut.setFlushOnEnd(false); - } - } - - /** - * Check if the peer requested a capability. - * - * @param name - * protocol name identifying the capability. - * @return true if the peer requested the capability to be enabled. - */ - protected boolean isCapabilityEnabled(String name) { - return enabledCapabilities.contains(name); - } - - /** @return true if a pack is expected based on the list of commands. */ - protected boolean needPack() { - for (final ReceiveCommand cmd : commands) { - if (cmd.getType() != ReceiveCommand.Type.DELETE) - return true; - } - return false; - } - - /** - * Receive a pack from the input and store it in the repository. - * - * @throws IOException - * an error occurred reading or indexing the pack. - */ - private void receivePack() throws IOException { - // It might take the client a while to pack the objects it needs - // to send to us. We should increase our timeout so we don't - // abort while the client is computing. - // - if (timeoutIn != null) - timeoutIn.setTimeout(10 * timeout * 1000); - - ProgressMonitor receiving = NullProgressMonitor.INSTANCE; - ProgressMonitor resolving = NullProgressMonitor.INSTANCE; - if (sideBand && !quiet) - resolving = new SideBandProgressMonitor(msgOut); - - try (ObjectInserter ins = db.newObjectInserter()) { - String lockMsg = "jgit receive-pack"; //$NON-NLS-1$ - if (getRefLogIdent() != null) - lockMsg += " from " + getRefLogIdent().toExternalString(); //$NON-NLS-1$ - - parser = ins.newPackParser(rawIn); - parser.setAllowThin(true); - parser.setNeedNewObjectIds(checkReferencedIsReachable); - parser.setNeedBaseObjectIds(checkReferencedIsReachable); - parser.setCheckEofAfterPackFooter(!biDirectionalPipe - && !isExpectDataAfterPackFooter()); - parser.setExpectDataAfterPackFooter(isExpectDataAfterPackFooter()); - parser.setObjectChecker(objectChecker); - parser.setLockMessage(lockMsg); - parser.setMaxObjectSizeLimit(maxObjectSizeLimit); - packLock = parser.parse(receiving, resolving); - packSize = Long.valueOf(parser.getPackSize()); - ins.flush(); - } - - if (timeoutIn != null) - timeoutIn.setTimeout(timeout * 1000); - } - - private boolean needCheckConnectivity() { - return isCheckReceivedObjects() - || isCheckReferencedObjectsAreReachable() - || !getClientShallowCommits().isEmpty(); - } - - private void checkConnectivity() throws IOException { - ObjectIdSubclassMap<ObjectId> baseObjects = null; - ObjectIdSubclassMap<ObjectId> providedObjects = null; - ProgressMonitor checking = NullProgressMonitor.INSTANCE; - if (sideBand && !quiet) { - SideBandProgressMonitor m = new SideBandProgressMonitor(msgOut); - m.setDelayStart(750, TimeUnit.MILLISECONDS); - checking = m; - } - - if (checkReferencedIsReachable) { - baseObjects = parser.getBaseObjectIds(); - providedObjects = parser.getNewObjectIds(); - } - parser = null; - - try (final ObjectWalk ow = new ObjectWalk(db)) { - if (baseObjects != null) { - ow.sort(RevSort.TOPO); - if (!baseObjects.isEmpty()) - ow.sort(RevSort.BOUNDARY, true); - } - - for (final ReceiveCommand cmd : commands) { - if (cmd.getResult() != Result.NOT_ATTEMPTED) - continue; - if (cmd.getType() == ReceiveCommand.Type.DELETE) - continue; - ow.markStart(ow.parseAny(cmd.getNewId())); - } - for (final ObjectId have : advertisedHaves) { - RevObject o = ow.parseAny(have); - ow.markUninteresting(o); - - if (baseObjects != null && !baseObjects.isEmpty()) { - o = ow.peel(o); - if (o instanceof RevCommit) - o = ((RevCommit) o).getTree(); - if (o instanceof RevTree) - ow.markUninteresting(o); - } - } - - checking.beginTask(JGitText.get().countingObjects, - ProgressMonitor.UNKNOWN); - RevCommit c; - while ((c = ow.next()) != null) { - checking.update(1); - if (providedObjects != null // - && !c.has(RevFlag.UNINTERESTING) // - && !providedObjects.contains(c)) - throw new MissingObjectException(c, Constants.TYPE_COMMIT); - } - - RevObject o; - while ((o = ow.nextObject()) != null) { - checking.update(1); - if (o.has(RevFlag.UNINTERESTING)) - continue; - - if (providedObjects != null) { - if (providedObjects.contains(o)) - continue; - else - throw new MissingObjectException(o, o.getType()); - } - - if (o instanceof RevBlob && !db.hasObject(o)) - throw new MissingObjectException(o, Constants.TYPE_BLOB); - } - checking.endTask(); - - if (baseObjects != null) { - for (ObjectId id : baseObjects) { - o = ow.parseAny(id); - if (!o.has(RevFlag.UNINTERESTING)) - throw new MissingObjectException(o, o.getType()); - } - } - } - } - - /** Validate the command list. */ - protected void validateCommands() { - for (final ReceiveCommand cmd : commands) { - final Ref ref = cmd.getRef(); - if (cmd.getResult() != Result.NOT_ATTEMPTED) - continue; - - if (cmd.getType() == ReceiveCommand.Type.DELETE) { - if (!isAllowDeletes()) { - // Deletes are not supported on this repository. - cmd.setResult(Result.REJECTED_NODELETE); - continue; - } - if (!isAllowBranchDeletes() - && ref.getName().startsWith(Constants.R_HEADS)) { - // Branches cannot be deleted, but other refs can. - cmd.setResult(Result.REJECTED_NODELETE); - continue; - } - } - - if (cmd.getType() == ReceiveCommand.Type.CREATE) { - if (!isAllowCreates()) { - cmd.setResult(Result.REJECTED_NOCREATE); - continue; - } - - if (ref != null && !isAllowNonFastForwards()) { - // Creation over an existing ref is certainly not going - // to be a fast-forward update. We can reject it early. - // - cmd.setResult(Result.REJECTED_NONFASTFORWARD); - continue; - } - - if (ref != null) { - // A well behaved client shouldn't have sent us a - // create command for a ref we advertised to it. - // - cmd.setResult(Result.REJECTED_OTHER_REASON, - JGitText.get().refAlreadyExists); - continue; - } - } - - if (cmd.getType() == ReceiveCommand.Type.DELETE && ref != null - && !ObjectId.zeroId().equals(cmd.getOldId()) - && !ref.getObjectId().equals(cmd.getOldId())) { - // Delete commands can be sent with the old id matching our - // advertised value, *OR* with the old id being 0{40}. Any - // other requested old id is invalid. - // - cmd.setResult(Result.REJECTED_OTHER_REASON, - JGitText.get().invalidOldIdSent); - continue; - } - - if (cmd.getType() == ReceiveCommand.Type.UPDATE) { - if (ref == null) { - // The ref must have been advertised in order to be updated. - // - cmd.setResult(Result.REJECTED_OTHER_REASON, JGitText.get().noSuchRef); - continue; - } - - if (!ref.getObjectId().equals(cmd.getOldId())) { - // A properly functioning client will send the same - // object id we advertised. - // - cmd.setResult(Result.REJECTED_OTHER_REASON, - JGitText.get().invalidOldIdSent); - continue; - } - - // Is this possibly a non-fast-forward style update? - // - RevObject oldObj, newObj; - try { - oldObj = walk.parseAny(cmd.getOldId()); - } catch (IOException e) { - cmd.setResult(Result.REJECTED_MISSING_OBJECT, cmd - .getOldId().name()); - continue; - } - - try { - newObj = walk.parseAny(cmd.getNewId()); - } catch (IOException e) { - cmd.setResult(Result.REJECTED_MISSING_OBJECT, cmd - .getNewId().name()); - continue; - } - - if (oldObj instanceof RevCommit && newObj instanceof RevCommit) { - try { - if (walk.isMergedInto((RevCommit) oldObj, - (RevCommit) newObj)) - cmd.setTypeFastForwardUpdate(); - else - cmd.setType(ReceiveCommand.Type.UPDATE_NONFASTFORWARD); - } catch (MissingObjectException e) { - cmd.setResult(Result.REJECTED_MISSING_OBJECT, e - .getMessage()); - } catch (IOException e) { - cmd.setResult(Result.REJECTED_OTHER_REASON); - } - } else { - cmd.setType(ReceiveCommand.Type.UPDATE_NONFASTFORWARD); - } - - if (cmd.getType() == ReceiveCommand.Type.UPDATE_NONFASTFORWARD - && !isAllowNonFastForwards()) { - cmd.setResult(Result.REJECTED_NONFASTFORWARD); - continue; - } - } - - if (!cmd.getRefName().startsWith(Constants.R_REFS) - || !Repository.isValidRefName(cmd.getRefName())) { - cmd.setResult(Result.REJECTED_OTHER_REASON, JGitText.get().funnyRefname); - } - } - } - - /** - * @return if any commands have been rejected so far. - * @since 3.6 - */ - protected boolean anyRejects() { - for (ReceiveCommand cmd : commands) { - if (cmd.getResult() != Result.NOT_ATTEMPTED && cmd.getResult() != Result.OK) - return true; - } - return false; - } - - /** - * Set the result to fail for any command that was not processed yet. - * @since 3.6 - */ - protected void failPendingCommands() { - for (ReceiveCommand cmd : commands) { - if (cmd.getResult() == Result.NOT_ATTEMPTED) - cmd.setResult(Result.REJECTED_OTHER_REASON, JGitText.get().transactionAborted); - } - } - - /** - * Filter the list of commands according to result. - * - * @param want - * desired status to filter by. - * @return a copy of the command list containing only those commands with the - * desired status. - */ - protected List<ReceiveCommand> filterCommands(final Result want) { - return ReceiveCommand.filter(commands, want); - } - - /** Execute commands to update references. */ - protected void executeCommands() { - List<ReceiveCommand> toApply = filterCommands(Result.NOT_ATTEMPTED); - if (toApply.isEmpty()) - return; - - ProgressMonitor updating = NullProgressMonitor.INSTANCE; - if (sideBand) { - SideBandProgressMonitor pm = new SideBandProgressMonitor(msgOut); - pm.setDelayStart(250, TimeUnit.MILLISECONDS); - updating = pm; - } - - BatchRefUpdate batch = db.getRefDatabase().newBatchUpdate(); - batch.setAllowNonFastForwards(isAllowNonFastForwards()); - batch.setRefLogIdent(getRefLogIdent()); - batch.setRefLogMessage("push", true); //$NON-NLS-1$ - batch.addCommand(toApply); - try { - batch.execute(walk, updating); - } catch (IOException err) { - for (ReceiveCommand cmd : toApply) { - if (cmd.getResult() == Result.NOT_ATTEMPTED) - cmd.reject(err); - } - } - } - - /** - * Send a status report. - * - * @param forClient - * true if this report is for a Git client, false if it is for an - * end-user. - * @param unpackError - * an error that occurred during unpacking, or {@code null} - * @param out - * the reporter for sending the status strings. - * @throws IOException - * an error occurred writing the status report. - */ - protected void sendStatusReport(final boolean forClient, - final Throwable unpackError, final Reporter out) throws IOException { - if (unpackError != null) { - out.sendString("unpack error " + unpackError.getMessage()); //$NON-NLS-1$ - if (forClient) { - for (final ReceiveCommand cmd : commands) { - out.sendString("ng " + cmd.getRefName() //$NON-NLS-1$ - + " n/a (unpacker error)"); //$NON-NLS-1$ - } - } - return; - } - - if (forClient) - out.sendString("unpack ok"); //$NON-NLS-1$ - for (final ReceiveCommand cmd : commands) { - if (cmd.getResult() == Result.OK) { - if (forClient) - out.sendString("ok " + cmd.getRefName()); //$NON-NLS-1$ - continue; - } - - final StringBuilder r = new StringBuilder(); - if (forClient) - r.append("ng ").append(cmd.getRefName()).append(" "); //$NON-NLS-1$ //$NON-NLS-2$ - else - r.append(" ! [rejected] ").append(cmd.getRefName()).append(" ("); //$NON-NLS-1$ //$NON-NLS-2$ - - switch (cmd.getResult()) { - case NOT_ATTEMPTED: - r.append("server bug; ref not processed"); //$NON-NLS-1$ - break; - - case REJECTED_NOCREATE: - r.append("creation prohibited"); //$NON-NLS-1$ - break; - - case REJECTED_NODELETE: - r.append("deletion prohibited"); //$NON-NLS-1$ - break; - - case REJECTED_NONFASTFORWARD: - r.append("non-fast forward"); //$NON-NLS-1$ - break; - - case REJECTED_CURRENT_BRANCH: - r.append("branch is currently checked out"); //$NON-NLS-1$ - break; - - case REJECTED_MISSING_OBJECT: - if (cmd.getMessage() == null) - r.append("missing object(s)"); //$NON-NLS-1$ - else if (cmd.getMessage().length() == Constants.OBJECT_ID_STRING_LENGTH) { - r.append("object "); //$NON-NLS-1$ - r.append(cmd.getMessage()); - r.append(" missing"); //$NON-NLS-1$ - } else - r.append(cmd.getMessage()); - break; - - case REJECTED_OTHER_REASON: - if (cmd.getMessage() == null) - r.append("unspecified reason"); //$NON-NLS-1$ - else - r.append(cmd.getMessage()); - break; - - case LOCK_FAILURE: - r.append("failed to lock"); //$NON-NLS-1$ - break; - - case OK: - // We shouldn't have reached this case (see 'ok' case above). - continue; - } - if (!forClient) - r.append(")"); //$NON-NLS-1$ - out.sendString(r.toString()); - } - } - - /** - * Close and flush (if necessary) the underlying streams. - * - * @throws IOException - */ - protected void close() throws IOException { - if (sideBand) { - // If we are using side band, we need to send a final - // flush-pkt to tell the remote peer the side band is - // complete and it should stop decoding. We need to - // use the original output stream as rawOut is now the - // side band data channel. - // - ((SideBandOutputStream) msgOut).flushBuffer(); - ((SideBandOutputStream) rawOut).flushBuffer(); - - PacketLineOut plo = new PacketLineOut(origOut); - plo.setFlushOnEnd(false); - plo.end(); - } - - if (biDirectionalPipe) { - // If this was a native git connection, flush the pipe for - // the caller. For smart HTTP we don't do this flush and - // instead let the higher level HTTP servlet code do it. - // - if (!sideBand && msgOut != null) - msgOut.flush(); - rawOut.flush(); - } - } - - /** - * Release any resources used by this object. - * - * @throws IOException - * the pack could not be unlocked. - */ - protected void release() throws IOException { - walk.close(); - unlockPack(); - timeoutIn = null; - rawIn = null; - rawOut = null; - msgOut = null; - pckIn = null; - pckOut = null; - refs = null; - enabledCapabilities = null; - commands = null; - if (timer != null) { - try { - timer.terminate(); - } finally { - timer = null; - } - } - } - - /** Interface for reporting status messages. */ - static abstract class Reporter { - abstract void sendString(String s) throws IOException; - } -} |