Commit Graph

479 Commits

Author SHA1 Message Date
Thomas Wolf 2eb54afe6a ApplyCommand: add streams to read/write binary patch hunks
Add streams that can encode or decode git binary patch data on the fly.
Git writes binary patches base-85 encoded, at most 52 un-encoded bytes,
with the unencoded data length prefixed in a one-character encoding, and
suffixed with a newline character.

Add a test for both the new input and the output stream. The test
roundtrips binary data of different lengths in different ways.

Bug: 371725
Change-Id: Ic3faebaa4637520f5448b3d1acd78d5aaab3907a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-05-26 00:37:59 +02:00
Thomas Wolf 501fc0dadd ApplyCommand: add a base-85 codec
Add an implementation for base-85 encoding and decoding [1]. Git binary
patches use this format.

Base-85 encoding assembles bytes as 32-bit MSB values, then converts
these values to base-85 numbers (always 5 bytes) encoded as printable
ASCII characters. Decoding base-85 is the reverse operation. Note
that decoding may overflow on invalid input as 85^5 > 2^32. Encodings
always have a length that is a multiple of 5. If input length is not
divisible by 4, padding bytes are (logically) added, which are ignored
when decoding. The encoding for n bytes has thus always exactly length
(n + 3) / 4 * 5 in integer arithmetic (truncating division).

Includes tests.

[1] https://datatracker.ietf.org/doc/html/rfc1924

Bug: 371725
Change-Id: Ib5b9a503cd62cf70e080a4fb38c8cd1eeeaebcfe
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2021-05-26 00:37:45 +02:00
Matthias Sohn 1ccdf83fbd Merge branch 'stable-5.10' into stable-5.11
* stable-5.10:
  LockFile: create OutputStream only when needed
  Remove ReftableNumbersNotIncreasingException

Change-Id: Id6e0a78caf12c19a01a88d1ddb8a7df2b3590f98
2021-05-11 00:57:46 +02:00
Matthias Sohn c557eea782 Merge branch 'stable-5.9' into stable-5.10
* stable-5.9:
  LockFile: create OutputStream only when needed
  Remove ReftableNumbersNotIncreasingException
  Fix stamping to produce stable file timestamps

Change-Id: I056382d1d93f3e0a95838bdd1f0be89711c8a722
2021-05-11 00:56:57 +02:00
Matthias Sohn 587c7eab45 Merge branch 'stable-5.8' into stable-5.9
* stable-5.8:
  LockFile: create OutputStream only when needed
  Remove ReftableNumbersNotIncreasingException

Change-Id: I3274c97cf560398c3c4c27d6759500452f315db0
2021-05-11 00:55:54 +02:00
Matthias Sohn f2e5bace48 Merge branch 'stable-5.7' into stable-5.8
* stable-5.7:
  LockFile: create OutputStream only when needed
  Remove ReftableNumbersNotIncreasingException

Change-Id: Ib3f280e0741f87a0ff615d857a5ea39b35527e74
2021-05-11 00:51:21 +02:00
Matthias Sohn 0616016c83 Merge branch 'stable-5.6' into stable-5.7
* stable-5.6:
  LockFile: create OutputStream only when needed

Change-Id: I7c0e37d2cee0923662a7e39df5a802a84c017e4f
2021-05-11 00:31:58 +02:00
Thomas Wolf 0038627226 LockFile: create OutputStream only when needed
Don't create the stream eagerly in lock(); that may cause JGit to
exceed OS or JVM limits on open file descriptors if many locks need
to be created, for instance when creating many refs. Instead create
the output stream only when one really needs to write something.

Bug: 573328
Change-Id: If9441ed40494d46f594a896d34a5c4f56f91ebf4
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-05-10 23:58:07 +02:00
Thomas Wolf a9579ba60c LockFile: create OutputStream only when needed
Don't create the stream eagerly in lock(); that may cause JGit to
exceed OS or JVM limits on open file descriptors if many locks need
to be created, for instance when creating many refs. Instead create
the output stream only when one really needs to write something.

Bug: 573328
Change-Id: If9441ed40494d46f594a896d34a5c4f56f91ebf4
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-05-07 12:10:47 +02:00
Matthias Sohn beecca02bb Merge branch 'stable-5.11'
* stable-5.11:
  Refactor CommitCommand to improve readability
  CommitCommand: fix formatting
  CommitCommand: remove unncessary comment
  Ensure post-commit hook is called after index lock was released
  sshd: try all configured signature algorithms for a key
  sshd: modernize ssh config file parsing
  sshd: implement ssh config PubkeyAcceptedAlgorithms

Change-Id: Ic3235ffd84c9d7537a1fe5ff4f216578e6e26724
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2021-03-26 09:56:19 +01:00
Matthias Sohn f43cb3605c Ensure post-commit hook is called after index lock was released
Otherwise a post-commit hook cannot modify the index.

Bug: 566934
Change-Id: I0093dccd93b2064f243544b516bdce198afdb18b
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2021-03-23 11:01:52 +01:00
Thomas Wolf 808c4495ca HTTP cookies: do tilde expansion on http.cookieFile
Git config http.cookieFile must have ~ expansion, compare [1].

It also should be an absolute path. While a relative path is allowed,
C git just passes the value on to libcurl, so it'll be relative to the
current working directory and thus not work in all directories.

Log a warning if the path is relative.

(Alternatives would be to throw an exception, or to resolve the path
relative to the .git directory, or relative to the working tree root,
or relative to the config file it occurs in. But C git does not seem
to do either.)

[1] https://github.com/git/git/commit/e5a39ad8e

Bug: 571798
Change-Id: I5cdab6061d0613ac7d8cb7977e5b97f5b88f562d
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-03-12 12:02:22 +01:00
Nasser Grainawi 971dafd302 Create a PackFile class for Pack filenames
The PackFile class is intended to be a central place to do all
common pack filename manipulation and parsing to help reduce repeated
code and bugs. Use the PackFile class in the Pack class and in many
tests to ensure it works well in a variety of situations. Later changes
will expand use of PackFiles to even more areas.

Change-Id: I921b30f865759162bae46ddd2c6d669de06add4a
Signed-off-by: Nasser Grainawi <quic_nasserg@quicinc.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2021-03-04 22:19:36 +01:00
Thomas Wolf 29697d86c5 IgnoreNode: include path to file for invalid .gitignore patterns
Include the full file path of the .gitignore file and the line number
of the invalid pattern. Also include the pattern itself.

.gitignore files inside the repository are reported with their
repository-relative path; files outside (from git config
core.excludesFile or .git/info/exclude) are reported with their
full absolute path.

Bug: 571143
Change-Id: Ibe5969679bc22cff923c62e3ab9801d90d6d06d1
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-02-23 22:11:01 +01:00
Thomas Wolf 4e745c57f7 FastIgnoreRule: include bad pattern in log message
When a .gitignore pattern cannot be parsed include the pattern in the
log message. Just reporting "not closed bracket" isn't helpful if the
user doesn't know in which pattern the problem occurred.

Even better would be to include the full path of the .gitignore file
that contained the offending pattern. This is not implemented in this
change; it may need new API and needs more thought.

Bug: 571143
Change-Id: Id5b16d9cf550544ba3ad409a02041946fa8516ab
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-02-23 22:11:01 +01:00
Matthias Sohn 64cb7148ac Fail clone if initial branch doesn't exist in remote repository
jgit clone --branch foo <url>

did not fail if the remote branch "foo" didn't exist in the remote
repository being cloned.

Bug: 546580
Change-Id: I55648ad3a39da4a5711dfa8e6d6682bb8190a6d6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2021-02-22 23:11:44 +01:00
Thomas Wolf 3774fcc848 GPG signature verification via BouncyCastle
Add a GpgSignatureVerifier interface, plus a factory to create
instances thereof that is provided via the ServiceLoader mechanism.

Implement the new interface for BouncyCastle. A verifier maintains
an internal LRU cache of previously found public keys to speed up
verifying multiple objects (tag or commits). Mergetags are not handled.

Provide a new VerifySignatureCommand in org.eclipse.jgit.api together
with a factory method Git.verifySignature(). The command can verify
signatures on tags or commits, and can be limited to accept only tags
or commits. Provide a new public WrongObjectTypeException thrown when
the command is limited to either tags or commits and a name resolves
to some other object kind.

In jgit.pgm, implement "git tag -v", "git log --show-signature", and
"git show --show-signature". The output is similar to command-line
gpg invoked via git, but not identical. In particular, lines are not
prefixed by "gpg:" but by "bc:".

Trust levels for public keys are read from the keys' trust packets,
not from GPG's internal trust database. A trust packet may or may
not be set. Command-line GPG produces more warning lines depending
on the trust level, warning about keys with a trust level below
"full".

There are no unit tests because JGit still doesn't have any setup to
do signing unit tests; this would require at least a faked .gpg
directory with pre-created key rings and keys, and a way to make the
BouncyCastle classes use that directory instead of the default. See
bug 547538 and also bug 544847.

Tested manually with a small test repository containing signed and
unsigned commits and tags, with signatures made with different keys
and made by command-line git using GPG 2.2.25 and by JGit using
BouncyCastle 1.65.

Bug: 547751
Change-Id: If7e34aeed6ca6636a92bf774d893d98f6d459181
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-02-16 00:37:00 +01:00
Thomas Wolf 58f4e6e7f8 TransportHttp: support preemptive Basic authentication
If the caller knows already HTTP Basic authentication will be needed
and if it also already has the username and password, preemptive
authentication is a little bit more efficient since it avoids the
initial 401 response.

Add a setPreemptiveBasicAuthentication(username, password) method
to TransportHttp. Client code could call this for instance in a
TransportConfigCallback. The method throws an IllegalStateException
if it is called after an HTTP request has already been made.

Additionally, a URI can include userinfo. Although it is not
recommended to put passwords in URIs, JGit's URIish and also the
Java URL and URI classes still allow it. The underlying HTTP
connection may omit these fields though. If present, take these
fields as additional source for preemptive Basic authentication if
setPreemptiveBasicAuthentication() has not been called.

No preemptive authentication will be done if the connection is
redirected to a different host.

Add tests.

Bug: 541327
Change-Id: Id00b975e56a15b532de96f7bbce48106d992a22b
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-01-14 16:23:45 +01:00
Thomas Wolf 471ad49546 TransportHttp: shared SSLContext during fetch or push
TransportHttp makes several HTTP requests. The SSLContext and socket
factory must be shared over these requests, otherwise authentication
information may not be propagated correctly from one request to the
next. This is important for authentication mechanisms that rely on
client-side state, like NEGOTIATE (either NTLM, if the underlying HTTP
library supports it, or Kerberos). In particular, SPNEGO cannot
authenticate on a POST request; the authentication must come from the
initial GET request, which implies that the POST request must use the
same SSLContext and socket factory that was used for the GET.

Change the way HTTPS connections are configured. Introduce the concept
of a GitSession, which is a client-side HTTP session over several HTTPS
requests. TransportHttp creates such a session and uses it to configure
all HTTP requests during that session (fetch or push). This gives a way
to abstract away the differences between JDK and Apache HTTP connections
and to configure SSL setup outside.

A GitSession can maintain state and thus give all HTTP requests in a
session the same socket factory.

Introduce an extension interface HttpConnectionFactory2 that adds a
method to obtain a new GitSession. Implement this for both existing
HTTP connection factories. Change TransportHttp to use the new
GitSession to configure HTTP connections.

The old methods for disabling SSL verification still exist to support
possibly external connection and connection factory implementations
that do not make use of the new GitSession yet.

Bug: 535850
Change-Id: Iedf67464e4e353c1883447c13c86b5a838e678f1
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-01-14 16:23:45 +01:00
Thomas Wolf 224aaa0be7 TransportHttp: make the connection factory configurable
Previously, TransportHttp always used the globally set connection
factory. This is problematic if that global factory is changed in
the middle of a fetch or push operation. Initialize the factory to
use in the constructor, then use that factory for all HTTP requests
made through this transport. Provide a setter and a getter for it
so that client code can customize the factory, if needed, in a
TransportConfigCallback.

Once a factory has been used on a TransportHttp instance it cannot
be changed anymore.

Make the global static factory reference volatile.

Change-Id: I7c6ee16680407d3724e901c426db174a3125ba1c
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-01-14 16:23:44 +01:00
Thomas Wolf 0853a2410f Client-side protocol V2 support for fetching
Make all transports request protocol V2 when fetching. Depending on
the transport, set the GIT_PROTOCOL environment variable (file and
ssh), pass the Git-Protocol header (http), or set the hidden
"\0version=2\0" (git anon). We'll fall back to V0 if the server
doesn't reply with a version 2 answer.

A user can control which protocol the client requests via the git
config protocol.version; if not set, JGit requests protocol V2 for
fetching. Pushing always uses protocol V0 still.

In the API, there is only a new Transport.openFetch() version that
takes a collection of RefSpecs plus additional patterns to construct
the Ref prefixes for the "ls-refs" command in protocol V2. If none
are given, the server will still advertise all refs, even in protocol
V2.

BasePackConnection.readAdvertisedRefs() handles falling back to
protocol V0. It newly returns true if V0 was used and the advertised
refs were read, and false if V2 is used and an explicit "ls-refs" is
needed. (This can't be done transparently inside readAdvertisedRefs()
because a "stateless RPC" transport like TransportHttp may need to
open a new connection for writing.)

BasePackFetchConnection implements the changes needed for the protocol
V2 "fetch" command (stateless protocol, simplified ACK handling,
delimiters, section headers).

In TransportHttp, change readSmartHeaders() to also recognize the
"version 2" packet line as a valid smart server indication.

Adapt tests, and run all the HTTP tests not only with both HTTP
connection factories (JDK and Apache HttpClient) but also with both
protocol V0 and V2. The SSH tests are much slower and much more
focused on the SSH protocol and SSH key handling. Factor out two
very simple cloning and pulling tests and make those run with
protocol V2.

Bug: 553083
Change-Id: I357c7f5daa7efb2872f1c64ee6f6d54229031ae1
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2021-01-01 21:22:30 +01:00
Han-Wen Nienhuys 7386f73bb0 Remove reftree and ketch
This was experimental code and never used in production.

Change-Id: Ia3da7f2b82d9e365cec2ccf9397cbc47439cd150
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-12-15 02:00:35 +01:00
Thomas Wolf 41b9159795 TagCommand: support signing annotated tags
Add the two config constants from C git that can switch on signing
of annotated tags. Add them to the GpgConfig, and implement actually
signing a tag in TagCommand.

The interactions between command line options for "git tag" and config
options is a bit murky in C git. There are two config settings for it:

* tag.gpgSign is the main option, if set to true, it kicks in if
  neither -s nor -u are given on the command line.
* tag.forceSignAnnotated signs only tags created via "git tag -m",
  but only if command-line option "-a" is not present. It applies
  even if tag.gpgSign is set explicitly to false.

Giving -s or -u on the command line also forces an annotated tag
since lightweight tags cannot be signed.

Bug: 386908
Change-Id: Ic8a1a44b5f12f47d5cdf3aae2456c1f6ca9ef057
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-12-07 09:33:57 +01:00
Thomas Wolf 5abd8a4feb Enable GpgSigner to also sign tags
Factor out a common ObjectBuilder as super class of CommitBuilder
and TagBuilder, and make the GpgSigner work on ObjectBuilder.

In order not to break API, add the new method for signing an
ObjectBuilder in a new interface GpgObjectSigner.

The signature for a tag is just tacked onto the end of the tag
message. The message of a signed tag must end in LF.

Bug: 386908
Change-Id: I5e021e3c927f4051825cd7355b129113b949455e
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-12-07 09:04:33 +01:00
Matthias Sohn d4fe93f55b Merge branch 'stable-5.9' into stable-5.10
* stable-5.9:
  Remove unused imports
  Silence API warnings
  Remove erraneously merged source features
  Prepare 5.3.9-SNAPSHOT builds
  JGit v5.3.8.202011260953-r
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  PacketLineIn: ensure that END != DELIM
  Update API warning filters
  Remove unused imports

Change-Id: Icf415ac5bab2f69f71189c942424ee69f8a64d4e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-27 10:10:44 +01:00
Matthias Sohn 5cd485e5dd Merge branch 'stable-5.8' into stable-5.9
* stable-5.8:
  Remove unused imports
  Silence API warnings
  Remove erraneously merged source features
  Prepare 5.3.9-SNAPSHOT builds
  JGit v5.3.8.202011260953-r
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  PacketLineIn: ensure that END != DELIM
  Update API warning filters
  Remove unused imports

Change-Id: I70b399eb3df02aa2fb112e86e844cf5a0daa5515
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-27 09:38:42 +01:00
Matthias Sohn d1801402fe Merge branch 'stable-5.7' into stable-5.8
* stable-5.7:
  Remove unused imports
  Silence API warnings
  Remove erraneously merged source features
  Prepare 5.3.9-SNAPSHOT builds
  JGit v5.3.8.202011260953-r
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  Update API warning filters
  Remove unused imports

Change-Id: I9b94938f5c09bd726e8e368c98c56da8280fd0b2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-27 09:07:30 +01:00
Matthias Sohn 99f5329c38 Merge branch 'stable-5.6' into stable-5.7
* stable-5.6:
  Prepare 5.3.9-SNAPSHOT builds
  JGit v5.3.8.202011260953-r
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  Update API warning filters
  Remove unused imports

Change-Id: Ie24d381f295cccfb99068c7ed5817179da29c1db
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-27 01:03:02 +01:00
Matthias Sohn 480b00f1c7 Merge branch 'stable-5.5' into stable-5.6
* stable-5.5:
  Prepare 5.3.9-SNAPSHOT builds
  JGit v5.3.8.202011260953-r
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  Update API warning filters
  Remove unused imports

Change-Id: I00c8ddad0059a20a978743dfb7ad1b513dc7fef6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-27 01:01:31 +01:00
Matthias Sohn 95846863cb Merge branch 'stable-5.4' into stable-5.5
* stable-5.4:
  Prepare 5.3.9-SNAPSHOT builds
  JGit v5.3.8.202011260953-r
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  Update API warning filters
  Remove unused imports

Change-Id: Icc34f809a3bb019d8d640b9bdb71363e617942e2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-27 00:40:26 +01:00
Matthias Sohn a74c0cd333 Merge branch 'stable-5.3' into stable-5.4
* stable-5.3:
  Prepare 5.3.9-SNAPSHOT builds
  JGit v5.3.8.202011260953-r
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  Update API warning filters
  Remove unused imports

Change-Id: I82576ad0f61cf3ff11b54691b32666c61401ad9b
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-27 00:29:53 +01:00
Matthias Sohn 3f85d3b75c Merge branch 'stable-5.2' into stable-5.3
* stable-5.2:
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  Update API warning filters
  Remove unused imports

Change-Id: Id9386846a202b5ae98dd602744963f8897ddaa8c
2020-11-26 15:37:19 +01:00
Matthias Sohn 65598b9516 Merge branch 'stable-5.1' into stable-5.2
* stable-5.1:
  Prepare 5.1.15-SNAPSHOT builds
  JGit v5.1.14.202011251942-r
  GC#deleteOrphans: log warning for deleted orphaned files
  GC#deleteOrphans: handle failure to list files in pack directory
  Ensure that GC#deleteOrphans respects pack lock
  Update API warning filters
  Remove unused imports

Change-Id: I91cfe2820c40d2d773cbf018cc2a6c36b062801e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-26 15:34:24 +01:00
Matthias Sohn 0f1735de0b GC#deleteOrphans: log warning for deleted orphaned files
Change-Id: Ie245bf5c8c924dfb1f0f40b8bcdcb1e6f5815526
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-11-26 01:34:42 +01:00
Thomas Wolf d69fb4d4ac Revert "Client-side protocol V2 support for fetching"
This reverts commit f802f06e7f.

I had misunderstood how protocol V2 works. This implementation only
works if the negotiation during fetch is done in one round.

Fixing this is substantial work in BasePackFetchConnection. Basically
I think I'd have to change back negotiate to the V0 version, and have
a doFetch() that does

  if protocol V2
    doFetchV2()
  else
    doFetchV0()

with doFetchV0 the old code, and doFetchV2 completely new.

Plus there would need to be a HTTP test case requiring several
negotiation rounds.

This is a couple of days work at least, and I don't know when I will
have the time to revisit this. So although the rest of the code is
fine I prefer to back this out completely and not leave a only half
working implementation in the code for an indeterminate time.

Bug: 553083
Change-Id: Icbbbb09882b3b83f9897deac4a06d5f8dc99d84e
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-11-03 23:50:21 +01:00
Thomas Wolf f802f06e7f Client-side protocol V2 support for fetching
Make all transports request protocol V2 when fetching. Depending on
the transport, set the GIT_PROTOCOL environment variable (file and
ssh), pass the Git-Protocol header (http), or set the hidden
"\0version=2\0" (git anon). We'll fall back to V0 if the server
doesn't reply with a version 2 answer.

A user can control which protocol the client requests via the git
config protocol.version; if not set, JGit requests protocol V2 for
fetching. Pushing always uses protocol V0 still.

In the API, there is only a new Transport.openFetch() version that
takes a collection of RefSpecs plus additional patterns to construct
the Ref prefixes for the "ls-refs" command in protocol V2. If none
are given, the server will still advertise all refs, even in protocol
V2.

BasePackConnection.readAdvertisedRefs() handles falling back to
protocol V0. It newly returns true if V0 was used and the advertised
refs were read, and false if V2 is used and an explicit "ls-refs" is
needed. (This can't be done transparently inside readAdvertisedRefs()
because a "stateless RPC" transport like TransportHttp may need to
open a new connection for writing.)

BasePackFetchConnection implements the changes needed for the protocol
V2 "fetch" command (simplified ACK handling, delimiters, section
headers).

In TransportHttp, change readSmartHeaders() to also recognize the
"version 2" packet line as a valid smart server indication.

Adapt tests, and run all the HTTP tests not only with both HTTP
connection factories (JDK and Apache HttpClient) but also with both
protocol V0 and V2. Do the same for the SSH transport tests.

Bug: 553083
Change-Id: Ice9866aa78020f5ca8f397cde84dc224bf5d41b4
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-10-29 00:36:21 +01:00
James Wynn 2171f868d9 Support "http.userAgent" and "http.extraHeader" from the git config
Validate the extra headers and log but otherwise ignore invalid
headers. An empty http.extraHeader starts the list afresh.

The http.userAgent is restricted to printable 7-bit ASCII, other
characters are replaced by '.'.

Moves a support method from the ssh.apache bundle to HttpSupport in
the main JGit bundle.

Bug:541500
Change-Id: Id2d8df12914e2cdbd936ff00dc824d8f871bd580
Signed-off-by: James Wynn <james@jameswynn.com>
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-09-26 23:42:38 +02:00
Thomas Wolf 2990ad66ad FS: use binary search to determine filesystem timestamp resolution
Previous code used a minimum granularity of 1 microsecond and would
iterate 233 times on a system where the resolution is 1 second (for
instance, Java 8 on Mac APFS).

New code uses a binary search between the maximum we care about (2
seconds) and zero, with a minimum granularity of also 1 microsecond.
This takes at most 19 iterations (guaranteed). For a file system with 1
second resolution, it takes 4 iterations (1s, 0.5s, 0.8s, 0.9s). With
an up-front check at 1 microsecond and at 1 millisecond this performs
equally well as the old code on file systems with a fine resolution.
(For instance, Java 11 on Mac APFS.)

Also handle obscure cases where the file timestamp implementation may
yield bogus values (as observed on HP NonStop). If such an error case
occurs, log a warning and abort the measurement at the last good value.

Bug: 565707
Change-Id: I82a96729b50c284be7c23fbdf3d0df1bddf60e41
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-08-23 11:39:24 +02:00
Matthias Sohn e9c7ba6fdc Do not prematurely create directory of jgit's XDG config file
LockFile.lock() will create it anyway when the config file is created.

Bug: 565637
Change-Id: I078b89a695193fd76f130f6de7ac1cf26d2f8f0f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-08-22 22:57:14 +02:00
Thomas Wolf e9cb0a8e47 DirCache: support index V4
Index format version 4 was introduced in C git in 2012. It's about
time that JGit can deal with it.

Version 4 added prefix path compression. Instead of writing the full
path for each index entry to disk, only the difference to the previous
entry's path is written: a variable-encoded int telling how many bytes
to remove from the previous entry's path to get the common prefix,
followed by the new suffix.

Also, cache entries in a version 4 index are not padded anymore.

Internally, version 3 and version 4 index entries are identical; it's
only the stored format that changes.

Implement this path compression, and make sure we write an index file
that we read previously in the same format. (Only changing from version
2 to version 3 if there are extended flags.)

Add support for the "feature.manyFiles" and the "index.version" git
configs, and honor them when writing a new index file.

Add tests, including a compatibility test that verifies that JGit can
read a version 4 index generated by C git and write an identical
version 4 index.

Bug: 565774
Change-Id: Id83241cf009e50f950eb42f8d56b834fb47da1ed
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-08-15 12:47:45 +02:00
Thomas Wolf 24fdc1d039 Fix JSchProcess.waitFor() with time-out
SshSupport.runSshCommand() had a comment that wait with time-out
could not be used because JSchProcess.exitValue() threw the wrong
unchecked exception when the process was still running.

Fix this and make JSchProcess.exitValue() throw the right exception,
then wait with a time-out in SshSupport.

The Apache sshd client's SshdExecProcess has always used the correct
IllegalThreadStateException.

Add tests for SshSupport.runCommand().

Change-Id: Id30893174ae8be3b9a16119674049337b0cf4381
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-08-10 22:51:34 +02:00
David Pursehouse 8774f54190 Improve error message when receive.maxCommandBytes is exceeded
The message "Too many commands" implies there is a hard limit on the
number of commands, which isn't the case. The limit is on the total
size of the received data, as explained in change I84317d396 which
introduced the configuration setting receive.maxCommandBytes:

  shorter reference names allow for more commands, longer reference
  names permit fewer commands per batch.

Change the message to:

  Commands size exceeds limit defined in receive.maxCommandBytes

Change-Id: I678b78f919b2fec8f8058f3403f2541c26a5d00e
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
2020-06-29 08:57:42 +09:00
Matthias Sohn 8d2d683655 Decouple JSch from JGit Core
Motivation: JSch serves as 'default' implementations of the SSH
transport. If a client application does not use it then there is no need
to pull in this dependency.

Move the classes depending on JSch to an OSGi fragment extending the
org.eclipse.jgit bundle and keep them in the same package as before
since moving them to another package would break API. Defer moving them
to a separate package to the next major release.

Add a new feature org.eclipse.jgit.ssh.jsch feature to enable
installation. With that users can now decide which of the ssh client
integrations (JCraft JSch or Apache Mina SSHD) they want to install.
We will remove the JCraft JSch integration in a later step due to the
reasons discussed in bug 520927.

Bug: 553625
Change-Id: I5979c8a9dbbe878a2e8ac0fbfde7230059d74dc2
Also-by: Michael Dardis <git@md-5.net>
Signed-off-by: Michael Dardis <git@md-5.net>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
2020-06-01 01:46:59 +02:00
Matthias Sohn 77848d635b Decouple BouncyCastle from JGit Core
Motivation: BouncyCastle serves as 'default' implementation of
the GPG Signer. If a client application does not use it there is no need
to pull in this dependency, especially since BouncyCastle is a large
library.

Move the classes depending on BouncyCastle to an OSGi fragment extending
the org.eclipse.jgit bundle. They are moved to a distinct internal
package in order to avoid split packages. This doesn't break public API
since these classes were already in an internal package before this
change.

Add a new feature org.eclipse.jgit.gpg.bc to enable installation. With
that users can now decide if they want to install it.

Attempts to sign a commit if org.eclipse.jgit.gpg.bc isn't available
will result in ServiceUnavailableException being thrown.

Bug: 559106
Change-Id: I42fd6c00002e17aa9a7be96ae434b538ea86ccf8
Also-by: Michael Dardis <git@md-5.net>
Signed-off-by: Michael Dardis <git@md-5.net>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: David Ostrovsky <david@ostrovsky.org>
2020-06-01 01:26:22 +02:00
Thomas Wolf 0b2d41b858 Verify that the user home directory is valid
If the determination of the user home directory produces a Java File
object with an invalid path, spurious exceptions may occur at the
most inopportune moments anytime later. In the case in the linked bug
report, start-up of EGit failed, leading to numerous user-visible
problems in Eclipse.

So validate the return value of FS.userHomeImpl(). If converting that
File to a Path throws an exception, log the problem and fall back to
Java system property user.home. If that also is not valid, use null.

(A null user home directory is allowed by FS, and calling in Java
new File(null, "some_string") is fine and produces a File relative
to the current working directory.)

Bug: 563739
Change-Id: If9eec0f9a31a45bd815231706285c71b09f8cf56
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2020-05-31 12:47:21 -04:00
Matthias Sohn a0aebbd528 Merge branch 'stable-5.6' into stable-5.7
* stable-5.6:
  Remove double blank from sentence start
  Bump Bazel version to 3.0.0

Change-Id: I26c3a8345020239d1c2ec5c6f70a633b43ddab86
2020-04-18 00:30:15 +02:00
Michael Keppler a79c5b1f10 Remove double blank from sentence start
Multiple whitespaces are not normalized when reading properties files,
therefore leading to unwanted space/indentation in console or UI output.

Change-Id: I1f5224fe359e0cac493e0237872afc75dc8b9fbe
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
(cherry picked from commit ebbc3efce7)
2020-04-17 14:36:50 +09:00
Michael Keppler ebbc3efce7 Remove double blank from sentence start
Multiple whitespaces are not normalized when reading properties files,
therefore leading to unwanted space/indentation in console or UI output.

Change-Id: I1f5224fe359e0cac493e0237872afc75dc8b9fbe
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
2020-04-14 09:31:50 +02:00
Alex Spradlin cf8c84c6d1 RevWalk: fix bad topo flags error message
The error message for an Exception thrown by StartGenerator when given
both the TOPO flag and the TOPO_KEEP_BRANCH_TOGETHER flag mentions a
non-existent flag, TOPO_NON_INTERMIX. The error message was introduced
in commit e498d43.

Replace TOPO_NON_INTERMIX with TOPO_KEEP_BRANCH_TOGETHER in the error
message of an Exception thrown by the StartGenerator when the TOPO flag
is provided together with the TOPO_KEEP_BRANCH_TOGETHER flag.

Signed-off-by: Alex Spradlin <alexaspradlin@google.com>
Change-Id: Id24640dc08e96a196508fe38ce144aa7e035082f
2020-03-12 09:04:36 -07:00
Alex Spradlin e498d43186 RevWalk: new topo sort to not mix lines of history
The topological sort algorithm in TopoSortGenerator for RevWalk may mix
multiple lines of history, producing results that differ from C git's
git-log whose man page states: "Show no parents before all of its
children are shown, and avoid showing commits on multiple lines of
history intermixed." Lines of history are mixed because
TopoSortGenerator merely delays producing a commit until all of its
children have been produced; it does not immediately produce a commit
after its last child has been produced.

Therefore, add a new RevSort option called TOPO_KEEP_BRANCH_TOGETHER
with a new topo sort algorithm in TopoNonIntermixGenerator. In the
Generator, when the last child of a commit has been produced, unpop
that commit so that it will be returned upon the subsequent call to
next(). To avoid producing duplicates, mark commits that have not yet
been produced as TOPO_QUEUED so that when a commit is popped, it is
produced if and only if TOPO_QUEUED is set.

To support nesting with other generators that may produce the same
commit multiple times like DepthGenerator (for example, StartGenerator
does this), do not increment parent inDegree for the same child commit
more than once.

Commit b5e764abd2 modified the existing
TopoSortGenerator to avoid mixing lines of history, but it was reverted
in e40c38ab08 because the new behavior
caused problems for EGit users. This motivated adding a new Generator
for the new behavior.

Signed-off-by: Alex Spradlin <alexaspradlin@google.com>
Change-Id: Icbb24eac98c00e45c175b01e1c8122554f617933
2020-03-11 15:39:38 -07:00
Michael Dardis d7f304045a Add validation to hex decoder
Does not fix any issue but prevents user from shooting themselves in the
foot with improper configuration.

Suggested by Demetr Starshov at https://git.eclipse.org/r/#/c/157681/

Change-Id: I006d65022f0a7d4066970825d00080c59404fdc3
Signed-off-by: Michael Dardis <git@md-5.net>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-03-04 16:34:01 +01:00
Matthias Sohn 7e3e740cc7 Merge branch 'stable-5.6' into stable-5.7
* stable-5.6:
  Fix string format parameter for invalidRefAdvertisementLine
  WindowCache: add metric for cached bytes per repository
  pgm daemon: fallback to user and system config if no config specified
  WindowCache: add option to use strong refs to reference ByteWindows
  Replace usage of ArrayIndexOutOfBoundsException in treewalk
  Add config constants for WindowCache configuration options

Change-Id: I79d615dff66493b60d3a4bcbdc57b9455e8d6673
2020-02-01 02:09:37 +01:00
Matthias Sohn 3d59d1b80c Merge branch 'stable-5.5' into stable-5.6
* stable-5.5:
  Fix string format parameter for invalidRefAdvertisementLine
  WindowCache: add metric for cached bytes per repository
  pgm daemon: fallback to user and system config if no config specified
  WindowCache: add option to use strong refs to reference ByteWindows
  Replace usage of ArrayIndexOutOfBoundsException in treewalk
  Add config constants for WindowCache configuration options

Change-Id: I73d16b53df02bf735c2431588143efe225a4b5b4
2020-02-01 02:06:47 +01:00
Matthias Sohn 68b0645a2e Merge branch 'stable-5.4' into stable-5.5
* stable-5.4:
  Fix string format parameter for invalidRefAdvertisementLine
  WindowCache: add metric for cached bytes per repository
  pgm daemon: fallback to user and system config if no config specified
  WindowCache: add option to use strong refs to reference ByteWindows
  Replace usage of ArrayIndexOutOfBoundsException in treewalk
  Add config constants for WindowCache configuration options

Change-Id: I76a62da98182f0c504b1ea8b7d37cecdf4eea7e0
2020-02-01 01:53:27 +01:00
Matthias Sohn 195b8fc94c Merge branch 'stable-5.3' into stable-5.4
* stable-5.3:
  Fix string format parameter for invalidRefAdvertisementLine
  WindowCache: add metric for cached bytes per repository
  pgm daemon: fallback to user and system config if no config specified
  WindowCache: add option to use strong refs to reference ByteWindows
  Replace usage of ArrayIndexOutOfBoundsException in treewalk
  Add config constants for WindowCache configuration options

Change-Id: I12002dbfed9dff14fc6d2df9787d92eab5b1fa78
2020-02-01 01:28:40 +01:00
Matthias Sohn 48dd3385ab Merge branch 'stable-5.2' into stable-5.3
* stable-5.2:
  Fix string format parameter for invalidRefAdvertisementLine
  WindowCache: add metric for cached bytes per repository
  pgm daemon: fallback to user and system config if no config specified
  WindowCache: add option to use strong refs to reference ByteWindows
  Replace usage of ArrayIndexOutOfBoundsException in treewalk
  Add config constants for WindowCache configuration options

Change-Id: I790098be00ff3f9b8278d54ae4fb7c11311816e9
2020-02-01 01:14:01 +01:00
David Pursehouse f57a7bd230 Merge branch 'stable-5.1' into stable-5.2
* stable-5.1:
  Fix string format parameter for invalidRefAdvertisementLine
  WindowCache: add metric for cached bytes per repository
  pgm daemon: fallback to user and system config if no config specified
  WindowCache: add option to use strong refs to reference ByteWindows

Change-Id: I741059a1d0d5950ab5bc16ec70352655ee926a24
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-02-01 01:09:46 +01:00
David Pursehouse 7d5300023e Fix string format parameter for invalidRefAdvertisementLine
The externalized error message added in f4fc640 ("BasePackConnection:
Check for expected length of ref advertisement", Dec 18, 2019) uses a
malformed string format. Since there is only one formatting argument,
it should be referenced with '{0}' rather than '{1}'.

Change-Id: Ibda864dfb0bb902fe07ae4bba73117b212046e8a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
2020-01-31 08:38:49 +09:00
Thomas Wolf d661b9f43a TLS support on IBM JDKs
SSLContext.getInstance("TLS") by default behaves differently on IBM
JDK than on Oracle or OpenJDK.[1] On IBM JDK one gets sockets that
have only TLSv1 enabled, which makes HTTPS connections fail since most
servers refuse this old protocol version. On Oracle JDK/OpenJDK, one
gets sockets with all available protocol versions enabled.

Explicitly enable all available TLS protocol versions to make
HTTPS connections work also on IBM JDK.

[1] https://www.ibm.com/support/knowledgecenter/en/SSYKE2_8.0.0/com.ibm.java.security.component.80.doc/security-component/jsse2Docs/matchsslcontext_tls.html#matchsslcontext_tls

Bug: 558709
Change-Id: I5ffc57a78e67a6239b9dad54840a49a8ed28930a
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2020-01-03 20:48:25 +01:00
Matthias Sohn 57f22d6db1 Externalize error message in FileRepository#convertRefStorage
Change-Id: I5d3acaa883ee7eb8d244b55b3e708cbe018690c6
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-12-14 22:10:12 +01:00
Thomas Wolf 59f9d206c9 Make blame work correctly on merge conflicts
When a conflicting file was blamed, JGit would not identify lines
coming from the merge parents. The main cause for this was that
Blame and BlameCommand simply added the first DirCacheEntry found
for a file to its queue of candidates (blobs or commits) to consider.
In case of a conflict this typically is the merge base commit, and
comparing a auto-merged contents against that base would yield
incorrect results.

Such cases have to be handled specially. The candidate to be
considered by the blame must use the working tree contents, but
at the same time behave like a merge commit/candidate with HEAD
and the MERGE_HEADs as parents. Canonical git does something very
similar, see [1].

Implement that and add tests.

I first did this for the JGit pgm Blame command. When I then tried
to do the same in BlameCommand, I noticed that the latter also
included some fancy but incomplete CR-LF handling. In order to
be able to use the new BlameGenerator.prepareHead() also in
BlameCommand this CR-LF handling was also moved into BlameGenerator
and corrected in doing so.

(Just considering the git config settings was not good enough,
CR-LF behavior can also be influenced by .gitattributes, and even
by whether the file in the index has CR-LF. To correctly determine
CR-LF handling for check-in one needs to do a TreeWalk with at
least a FileTreeIterator and a DirCacheIterator.)

[1] https://github.com/git/git/blob/v2.22.0/blame.c#L174

Bug: 434330
Change-Id: I9d763dd6ba478b0b6ebf9456049d6301f478ef7c
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2019-11-27 03:03:06 +01:00
Han-Wen Nienhuys 38586d54d0 file: implement FileReftableDatabase
Reftable is a binary, block-based storage format for the ref-database.
It provides several advantages over the traditional packed + loose
storage format:

 * O(1) write performance, even for deletions and transactions.

 * atomic updates to the ref database.

 * O(log N) lookup and prefix scans

 * free from restrictions imposed by the file system: it is
   case-sensitive even on case-insensitive file systems, and has
   no inherent limitations for directory/file conflicts

 * prefix compression reduces space usage for repetitive ref names,
   such as gerrit's refs/changes/xx/xxxxx format.

FileReftableDatabase is based on FileReftableStack, which does
compactions inline. This is simple, and has good median performance,
but every so often it will rewrite the entire ref database.

For testing, a FileReftableTest (mirroring RefUpdateTest) is added to
check for Reftable specific behavior. This must be done separately, as
reflogs have different semantics.

Add a reftable flavor of BatchRefUpdateTest.

Add a FileReftableStackTest to exercise compaction.

Add FileRepository#convertToReftable so existing testdata can be
reused.

CQ: 21007
Change-Id: I1837f268e91c6b446cb0155061727dbaccb714b8
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-11-16 23:16:01 -08:00
Matthias Sohn 826317942f Merge branch 'stable-5.5'
* stable-5.5:
  BaseReceivePack: Fix the format
  Prepend hostname to subsection used to store file timestamp resolution
  Store filesystem timestamp resolution in extra jgit config
  SystemReader: extract updating config and its parents if outdated

Change-Id: Iecfddce8081303af29badcdcd3d72a0da50c964f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-11-11 11:07:17 -08:00
Matthias Sohn 838b5a84b5 Store filesystem timestamp resolution in extra jgit config
This avoids polluting hand-crafted user level config with
auto-configured options which might disturb in environments where
the user level config is replicated between different machines.

Add a jgit config as parent of the system level config. Persist
measured timestamp resolutions always in this jgit config and read it
via the user global config. This has the effect that auto-configured
timestamp resolution will be used by default and can be overridden in
either the system level or user level config.

Store the jgit config under the XDG_CONFIG_HOME directory following the
XDG base directory specification [1] in order to ensure that we have
write permissions to persist the file. This has the effect that each OS
user will use its jgit config since they typically use different
XDG_CONFIG_HOME directories.

If the environment variable XDG_CONFIG_HOME is defined the jgit config
file is located at $XDG_CONFIG_HOME/jgit/config otherwise the default is
~/.config/jgit/config.

If you want to avoid redundant measurement for different OS users
manually copy the values measured and auto-configured for one OS user to
the system level git config.

[1] https://wiki.archlinux.org/index.php/XDG_Base_Directory

Bug: 551850
Change-Id: I0022bd40ae62f82e5b964c2ea25822eb55d94687
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-11-09 18:01:19 +01:00
Matthias Sohn 271051ef06 Replace "Rebase interactive" with "Interactive rebase"
The RepositoryState's description is shown in EGit's interactive rebase
view. Use the grammatically correct form.

Bug: 552359
Change-Id: I860ef730a67f2b34d7fabbfbda5ea65ead9270d2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-10-25 17:46:58 +02:00
Thomas Wolf 385b503ae8 Support for core.hooksPath
Support the core.hooksPath git config. This can be an absolute or
relative path of a directory where to find git hooks; a relative
path is resolved relative to the directory the hook will run in.

Bug: 500266
Change-Id: I671999a6386a837e897c31718583c91d8035f3ba
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2019-10-21 18:05:31 -04:00
Matthias Sohn 830e214805 Merge branch 'stable-5.5'
* stable-5.5:
  bazel: fix running http tests
  Set parameter name in parameterized http tests
  Format BUILD files with buildifier
  Format BUILD files with buildifier
  [error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
  Bazel: Format BUILD files with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Fix warning about deprecated lib.bzl
  Format lib/BUILD with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Bump minimum supported version to 0.29.0
  Bazel: Bump skylib library version to 0.8.0
  Use bazelisk to switch between used bazel version
  Bazel: Require minimum bazel version 0.17.1
  Fix wrong placeholder index in error message packInaccessible
  JGitText: Remove unused externalized strings
  RepoText: Remove unused externalized string
  CLI: Remove unused externalized strings

Change-Id: Idb0848dd33a76328b24908dc86db335cca742a1c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-09-08 17:36:59 +02:00
Matthias Sohn b31d5360f0 Merge branch 'stable-5.4' into stable-5.5
* stable-5.4:
  Format BUILD files with buildifier
  Format BUILD files with buildifier
  [error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
  Bazel: Format BUILD files with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Fix warning about deprecated lib.bzl
  Format lib/BUILD with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Bump minimum supported version to 0.29.0
  Bazel: Bump skylib library version to 0.8.0
  Use bazelisk to switch between used bazel version
  Bazel: Require minimum bazel version 0.17.1
  Fix wrong placeholder index in error message packInaccessible
  JGitText: Remove unused externalized strings
  RepoText: Remove unused externalized string
  CLI: Remove unused externalized strings

Change-Id: Idf3abd80ad3b00188f655e638d9908228770911f
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-09-08 17:35:14 +02:00
Matthias Sohn 80fd4cb075 Merge branch 'stable-5.3' into stable-5.4
* stable-5.3:
  Format BUILD files with buildifier
  [error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
  Bazel: Format BUILD files with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Fix warning about deprecated lib.bzl
  Format lib/BUILD with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Bump minimum supported version to 0.29.0
  Bazel: Bump skylib library version to 0.8.0
  Use bazelisk to switch between used bazel version
  Bazel: Require minimum bazel version 0.17.1
  Fix wrong placeholder index in error message packInaccessible
  JGitText: Remove unused externalized strings
  RepoText: Remove unused externalized string
  CLI: Remove unused externalized strings

Change-Id: Iaea77a89fcd821df5dbb24f5e3e39e6d1dfc0bd4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-09-08 15:05:19 +02:00
Matthias Sohn 82badd0a87 Merge branch 'stable-5.2' into stable-5.3
* stable-5.2:
  [error prone] Suppress NonAtomicVolatileUpdate in SimpleLruCache
  Bazel: Format BUILD files with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Fix warning about deprecated lib.bzl
  Format lib/BUILD with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Bump minimum supported version to 0.29.0
  Bazel: Bump skylib library version to 0.8.0
  Use bazelisk to switch between used bazel version
  Bazel: Require minimum bazel version 0.17.1
  Fix wrong placeholder index in error message packInaccessible
  JGitText: Remove unused externalized strings
  RepoText: Remove unused externalized string
  CLI: Remove unused externalized strings

Change-Id: I0d8b7f79177a20dc00c89e2cf0005eb3d3039532
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-09-08 11:17:32 +02:00
Matthias Sohn 38198972d4 Merge branch 'stable-5.1' into stable-5.2
* stable-5.1:
  Bazel: Fix warning about deprecated lib.bzl
  Format lib/BUILD with buildifier
  Bazel: Add fixes for --incompatible_load_java_rules_from_bzl
  Bazel: Bump minimum supported version to 0.29.0
  Bazel: Bump skylib library version to 0.8.0
  Use bazelisk to switch between used bazel version
  Bazel: Require minimum bazel version 0.17.1
  Fix wrong placeholder index in error message packInaccessible
  JGitText: Remove unused externalized strings
  RepoText: Remove unused externalized string
  CLI: Remove unused externalized strings

Change-Id: Iea37a8e39e9d4872dc607c9222dcf191ce4e4757
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-09-07 12:16:42 +02:00
Matthias Sohn 185dc84623 Fix wrong placeholder index in error message packInaccessible
See: https://www.eclipse.org/lists/jgit-dev/msg03850.html
Change-Id: I0e121a2b7ac399f4a663fa49ab330d27363e9a55
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-09-07 01:19:07 +02:00
David Pursehouse 8792743c51 JGitText: Remove unused externalized strings
Change-Id: I995d7a1b6ab2866221eee9f5cb828b97192daf4a
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
2019-09-07 01:19:07 +02:00
David Pursehouse 689474248c RepoText: Remove unused externalized string
Change-Id: Ida47637f54afdb76513be9b04aae32107567d4e3
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
2019-09-07 01:19:06 +02:00
Yunjie Li ea9231b39d ReceivePack: Prevent pointing a branch to a non-commit object
Since commit c3b0dec509fe136c5417422f31898b5a4e2d5e02, Git has
disallowed writing a non-commit to refs/heads/* refs.  JGit still
allows that, which can put users in a bad situation.  For example,

	git push origin v1.0:master

pushes the tag object v1.0 to refs/heads/master, instead of the
intended commit object v1.0^{commit}.

Prevent that by validating that the target of the ref points to a
commit object when pushing to refs/heads/*.

Git performs the same check at a lower level (in the RefDatabase).  We
could do the same here, but for now let's start conservatively by
handling it in pushes first.

[jn: fleshed out commit message]

Change-Id: I8f98ae6d8acbcd5ef7553ec732bc096cb6eb7c4e
Signed-off-by: Yunjie Li <yunjieli@google.com>
Signed-off-by: Jonathan Nieder <jrn@google.com>
2019-09-06 12:18:17 -07:00
Nail Samatov b9d2926df4 Fix error occurring when SecurityManager is enabled
It's expected that jgit should work without native git installation.
In such case Security Manager can be configured to deny access to the
files outside of git repository. JGit tries to find cygwin
installation. If Security manager restricts access to some folders
in PATH, it should be considered that those folders are absent
for jgit.
Also JGit tries to detect if symbolic links are supported by OS. If
security manager forbids creation of symlinks, it should be assumed
that symlinks aren't supported.

Bug: 550115
Change-Id: Ic4b243cada604bc1090db6cc1cfd74f0fa324b98
Signed-off-by: Nail Samatov <sanail@yandex.ru>
2019-08-23 20:38:26 +03:00
Matthias Sohn 53160ee12b Externalize error message in ReftableWriter#throwIllegalEntry
Also use MessageFormat as done elsewhere.

Change-Id: I36a4df9002310fa28321de9d325ee213f3cbd433
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-20 00:35:51 +02:00
Matthias Sohn 3e2c88199f Merge branch 'stable-5.4'
* stable-5.4:
  Fix NPE in RebaseTodoFile#parseComments
  Fix NPE in ObjectIdOwnerMap#get
  Fix NPE in CommitOnlyTest#getHead
  FileUtils#lastModifiedInstant should not log error if path doesn't exist
  Cache user global and system-wide git configurations
  Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
  Add missing dependencies for running FS_POSIXTest in Eclipse
  Fix javadoc for SystemReader#getInstance
  Upgrade tycho-extras to 1.4.0
  Improve retry handling when saving FileStoreAttributes fails
  Ensure FSTest uses MockSystemReader
  Make supportsAtomicCreateNewFile return true as default
  Update orbit to R20190602212107-2019-06 to enable backports from master
  Handle InvalidPathException in FS_POSIX#createNewFileAtomic
  Ensure root cause of lock creation failures is logged
  Implement toString in MockSystemReader and MockConfig
  LocalDiskRefTreeDatabaseTest shall use MockSystemReader
  Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
  Ensure we use MockSystemReader in tests
  Override FileBasedConfig's save method in MockConfig
  Remove FileBasedConfig.load(boolean) introduced in d45219ba
  Disable debug log for FS in org.eclipse.jgit.test
  Bazel: enable logging for tests in org.eclipse.jgit.test
  LockFile: log exception if creation of lock file failed
  Stop using deprecated Constants.CHARACTER_ENCODING

Change-Id: I709de5edb626536529a99220aae7751b127c9bff
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-20 00:16:11 +02:00
Matthias Sohn 35d99477b8 Merge branch 'stable-5.3' into stable-5.4
* stable-5.3:
  Fix NPE in RebaseTodoFile#parseComments
  Fix NPE in ObjectIdOwnerMap#get
  Fix NPE in CommitOnlyTest#getHead
  FileUtils#lastModifiedInstant should not log error if path doesn't exist
  Cache user global and system-wide git configurations
  Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
  Add missing dependencies for running FS_POSIXTest in Eclipse
  Fix javadoc for SystemReader#getInstance
  Improve retry handling when saving FileStoreAttributes fails
  Ensure FSTest uses MockSystemReader
  Make supportsAtomicCreateNewFile return true as default
  Update orbit to R20190602212107-2019-06 to enable backports from master
  Handle InvalidPathException in FS_POSIX#createNewFileAtomic
  Ensure root cause of lock creation failures is logged
  Implement toString in MockSystemReader and MockConfig
  LocalDiskRefTreeDatabaseTest shall use MockSystemReader
  Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
  Ensure we use MockSystemReader in tests
  Override FileBasedConfig's save method in MockConfig
  Remove FileBasedConfig.load(boolean) introduced in d45219ba
  Disable debug log for FS in org.eclipse.jgit.test
  Bazel: enable logging for tests in org.eclipse.jgit.test
  LockFile: log exception if creation of lock file failed
  Stop using deprecated Constants.CHARACTER_ENCODING

Change-Id: I43c2ab8b44c3e87d48e4072907ad169c81e3ffe0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-20 00:10:15 +02:00
Matthias Sohn 18fb58ae05 Merge branch 'stable-5.2' into stable-5.3
* stable-5.2:
  Fix NPE in RebaseTodoFile#parseComments
  Fix NPE in ObjectIdOwnerMap#get
  Fix NPE in CommitOnlyTest#getHead
  FileUtils#lastModifiedInstant should not log error if path doesn't exist
  Cache user global and system-wide git configurations
  Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
  Add missing dependencies for running FS_POSIXTest in Eclipse
  Fix javadoc for SystemReader#getInstance
  Improve retry handling when saving FileStoreAttributes fails
  Ensure FSTest uses MockSystemReader
  Make supportsAtomicCreateNewFile return true as default
  Update orbit to R20190602212107-2019-06 to enable backports from master
  Handle InvalidPathException in FS_POSIX#createNewFileAtomic
  Ensure root cause of lock creation failures is logged
  Implement toString in MockSystemReader and MockConfig
  LocalDiskRefTreeDatabaseTest shall use MockSystemReader
  Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
  Ensure we use MockSystemReader in tests
  Override FileBasedConfig's save method in MockConfig
  Remove FileBasedConfig.load(boolean) introduced in d45219ba
  Disable debug log for FS in org.eclipse.jgit.test
  Bazel: enable logging for tests in org.eclipse.jgit.test
  LockFile: log exception if creation of lock file failed
  Stop using deprecated Constants.CHARACTER_ENCODING

Change-Id: If0c5010a2cf151ebebb2f2088fac3ee02c5007b9
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-19 23:41:17 +02:00
Matthias Sohn 0eea7368e2 Merge branch 'stable-5.1' into stable-5.2
* stable-5.1:
  Fix NPE in RebaseTodoFile#parseComments
  Fix NPE in ObjectIdOwnerMap#get
  Fix NPE in CommitOnlyTest#getHead
  FileUtils#lastModifiedInstant should not log error if path doesn't exist
  Cache user global and system-wide git configurations
  Avoid setup and saving FileStoreAttributes compete for ~/.gitconfig lock
  Add missing dependencies for running FS_POSIXTest in Eclipse
  Fix javadoc for SystemReader#getInstance
  Improve retry handling when saving FileStoreAttributes fails
  Ensure FSTest uses MockSystemReader
  Make supportsAtomicCreateNewFile return true as default
  Update orbit to R20190602212107-2019-06 to enable backports from master
  Handle InvalidPathException in FS_POSIX#createNewFileAtomic
  Ensure root cause of lock creation failures is logged
  Implement toString in MockSystemReader and MockConfig
  LocalDiskRefTreeDatabaseTest shall use MockSystemReader
  Ensure LocalDiskRepositoryTestCase#setup fully uses MockSystemReader
  Ensure we use MockSystemReader in tests
  Override FileBasedConfig's save method in MockConfig
  Remove FileBasedConfig.load(boolean) introduced in d45219ba
  Disable debug log for FS in org.eclipse.jgit.test
  Bazel: enable logging for tests in org.eclipse.jgit.test
  LockFile: log exception if creation of lock file failed
  Stop using deprecated Constants.CHARACTER_ENCODING

Change-Id: I48c585f3c9287be7d6ddb6b01a1955444e13fa31
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-19 18:30:35 +02:00
Matthias Sohn f383206ace Cache user global and system-wide git configurations
So far the git configuration and the system wide git configuration were
always reloaded when jgit accessed these global configuration files to
access global configuration options which are not in the context of a
single git repository. Cache these configurations in SystemReader and
only reload them if their file metadata observed using FileSnapshot
indicates a modification.

Change-Id: I092fe11a5d95f1c5799273cacfc7a415d0b7786c
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2019-08-18 11:47:26 +02:00
Matthias Sohn 2d84bb4341 Improve retry handling when saving FileStoreAttributes fails
- fix handling of interrupts in FileStoreAttributes#saveToConfig
- increase retry wait time to 100ms
- don't wait after last retry
- dont retry if failure is caused by another exception than
LockFailedException

Change-Id: I108c012717d2bcce71f2c6cb9cf0879de704ebc2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-13 08:33:32 +02:00
Matthias Sohn 42000a71e3 LockFile: log exception if creation of lock file failed
Change-Id: I4de75d12ec9e61193494916307289378cdb6220e
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-10 00:57:04 +02:00
Matthias Sohn 3cea3676c7 Merge branch 'stable-5.4'
* stable-5.4: (82 commits)
  Export all packages of o.e.j.ant and o.e.j.archive bundles
  Do not require test bundles to export all packages
  Fix API problem filters
  Increase severity of AmbiguousMethodReference to ERROR
  [error prone] suppress AmbiguousMethodReference in AnyLongObjectId
  [error prone] fix ReferenceEquality warning in CommitBuilder
  [error prone] suppress NonAtomicVolatileUpdate warning in SimpleLruCache
  [error prone] fix ReferenceEquality warning in CommitGraphPane#authorFor
  [error prone] fix ReferenceEquality warning in RevWalk#isMergedInto
  [error prone] fix ReferenceEquality warning in RefUpdate#updateImpl
  [error prone] fix ReferenceEquality warning in static equals methods
  [error prone] suppress AmbiguousMethodReference in AnyObjectId
  [error prone] fix "FutureReturnValueIgnored" error in FS
  Fix formatting and add missing braces in Repository#stripWorkDir
  Repository: fix reference comparison of Files
  MergeAlgorithm: Suppress Error Prone warning about reference equality
  Fix NarrowingCompoundAssignment warnings from Error Prone
  FS_POSIX: handle Files.getFileStore() failures
  Fix OpenSshConfigTest#config
  FileSnapshot: fix bug with timestamp thresholding
  In LockFile#waitForStatChange wait in units of file time resolution
  Cache FileStoreAttributeCache per directory
  Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
  Persist minimal racy threshold and allow manual configuration
  Measure minimum racy interval to auto-configure FileSnapshot
  Reuse FileUtils to recursively delete files created by tests
  Fix FileAttributeCache.toString()
  Add test for racy git detection in FileSnapshot
  Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
  Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
  Add missing javadoc in org.eclipse.jgit.junit
  Enhance RepeatRule to report number of failures at the end
  Fix FileSnapshotTests for filesystem with high timestamp resolution
  Retry deleting test files in FileBasedConfigTest
  Measure filesystem timestamp resolution already in test setup
  Refactor FileSnapshotTest to use NIO APIs
  Measure stored timestamp resolution instead of time to touch file
  Handle CancellationException in FileStoreAttributeCache
  Fix FileSnapshot#saveNoConfig
  Use Instant for smudge time in DirCache and DirCacheEntry
  Use Instant instead of milliseconds for filesystem timestamp handling
  Workaround SecurityException in FS#getFsTimestampResolution
  Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
  FS: ignore AccessDeniedException when measuring timestamp resolution
  Add debug trace for FileSnapshot
  Use FileChannel.open to touch file and set mtime to now
  Persist filesystem timestamp resolution and allow manual configuration
  Increase bazel timeout for long running tests
  Bazel: Fix lint warning flagged by buildifier
  Update bazlets to latest version
  Bazel: Add missing dependencies for ArchiveCommandTest
  Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
  Add support for nanoseconds and microseconds for Config#getTimeUnit
  Optionally measure filesystem timestamp resolution asynchronously
  Delete unused FileTreeIteratorWithTimeControl
  FileSnapshot#equals: consider UNKNOWN_SIZE
  Timeout measuring file timestamp resolution after 2 seconds
  Fix RacyGitTests#testRacyGitDetection
  GlobalBundleCache: Fix ClassNewInstance warning from Error Prone
  IncorrectObjectTypeException: Fix typos in constructors' Javadoc
  Change RacyGitTests to create a racy git situation in a stable way
  Deprecate Constants.CHARACTER_ENCODING in favor of StandardCharsets.UTF_8
  Fix non-deterministic hash of archives created by ArchiveCommand
  Update Maven plugins ecj, plexus, error-prone
  Update Maven plugins and cleanup Maven warnings
  Make inner classes static where possible
  Error Prone: Increase severity of NonOverridingEquals to ERROR
  Error Prone: Increase severity of ImmutableEnumChecker to ERROR
  GitDateParser#ParseableSimpleDateFormat: Make formatStr private final
  BatchRefUpdateTest: Suppress ImmutableEnumChecker warning
  PacketLineIn: Suppress comparison warnings for END and DELIM
  FileSnapshot#toString: Suppress ReferenceEquality warnings
  Blame: Suppress ReferenceEquality warning for RevCommit instances
  Fix API problem filters
  pgm: add missing optional dependency to org.tukaani:xz
  NetscapeCookieFile: Make hash static and group overloaded write
  NetscapeCookieFile: Javadoc fixes
  Config: Handle reference-equality warning (and empty javadoc)
  Error Prone: Increase severity of ShortCircuitBoolean to ERROR
  ObjectWalk: Prefer boolean operators over logical operators in comparisons
  BasePackFetchConnection: Prefer boolean operators over logical operators in comparisons
  PackWriter: Prefer boolean operators over logical operators in comparisons

Change-Id: I825fd55bcb5345fb7afe066bf54ca50325f40acb
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-09 14:32:02 +02:00
Matthias Sohn f54db4a857 Merge branch 'stable-5.3' into stable-5.4
* stable-5.3:
  Fix OpenSshConfigTest#config
  FileSnapshot: fix bug with timestamp thresholding
  In LockFile#waitForStatChange wait in units of file time resolution
  Cache FileStoreAttributeCache per directory
  Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
  Persist minimal racy threshold and allow manual configuration
  Measure minimum racy interval to auto-configure FileSnapshot
  Reuse FileUtils to recursively delete files created by tests
  Fix FileAttributeCache.toString()
  Add test for racy git detection in FileSnapshot
  Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
  Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
  Add missing javadoc in org.eclipse.jgit.junit
  Enhance RepeatRule to report number of failures at the end
  Fix FileSnapshotTests for filesystem with high timestamp resolution
  Retry deleting test files in FileBasedConfigTest
  Measure filesystem timestamp resolution already in test setup
  Refactor FileSnapshotTest to use NIO APIs
  Measure stored timestamp resolution instead of time to touch file
  Handle CancellationException in FileStoreAttributeCache
  Fix FileSnapshot#saveNoConfig
  Use Instant for smudge time in DirCache and DirCacheEntry
  Use Instant instead of milliseconds for filesystem timestamp handling
  Workaround SecurityException in FS#getFsTimestampResolution
  Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
  FS: ignore AccessDeniedException when measuring timestamp resolution
  Add debug trace for FileSnapshot
  Use FileChannel.open to touch file and set mtime to now
  Persist filesystem timestamp resolution and allow manual configuration
  Increase bazel timeout for long running tests
  Bazel: Fix lint warning flagged by buildifier
  Update bazlets to latest version
  Bazel: Add missing dependencies for ArchiveCommandTest
  Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
  Add support for nanoseconds and microseconds for Config#getTimeUnit
  Optionally measure filesystem timestamp resolution asynchronously
  Delete unused FileTreeIteratorWithTimeControl
  FileSnapshot#equals: consider UNKNOWN_SIZE
  Timeout measuring file timestamp resolution after 2 seconds
  Fix RacyGitTests#testRacyGitDetection
  Change RacyGitTests to create a racy git situation in a stable way
  Deprecate Constants.CHARACTER_ENCODING in favor of StandardCharsets.UTF_8
  Fix non-deterministic hash of archives created by ArchiveCommand
  Update Maven plugins ecj, plexus, error-prone
  Update Maven plugins and cleanup Maven warnings
  Make inner classes static where possible
  Fix API problem filters

Change-Id: Iec3ad6ccc194582cb844310dc172c3103dae4457
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-08 13:24:14 +02:00
Matthias Sohn 718555518d Merge branch 'stable-5.2' into stable-5.3
* stable-5.2:
  Fix OpenSshConfigTest#config
  FileSnapshot: fix bug with timestamp thresholding
  In LockFile#waitForStatChange wait in units of file time resolution
  Cache FileStoreAttributeCache per directory
  Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
  Persist minimal racy threshold and allow manual configuration
  Measure minimum racy interval to auto-configure FileSnapshot
  Reuse FileUtils to recursively delete files created by tests
  Fix FileAttributeCache.toString()
  Add test for racy git detection in FileSnapshot
  Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
  Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
  Add missing javadoc in org.eclipse.jgit.junit
  Enhance RepeatRule to report number of failures at the end
  Fix FileSnapshotTests for filesystem with high timestamp resolution
  Retry deleting test files in FileBasedConfigTest
  Measure filesystem timestamp resolution already in test setup
  Refactor FileSnapshotTest to use NIO APIs
  Measure stored timestamp resolution instead of time to touch file
  Handle CancellationException in FileStoreAttributeCache
  Fix FileSnapshot#saveNoConfig
  Use Instant for smudge time in DirCache and DirCacheEntry
  Use Instant instead of milliseconds for filesystem timestamp handling
  Workaround SecurityException in FS#getFsTimestampResolution
  Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
  FS: ignore AccessDeniedException when measuring timestamp resolution
  Add debug trace for FileSnapshot
  Use FileChannel.open to touch file and set mtime to now
  Persist filesystem timestamp resolution and allow manual configuration
  Increase bazel timeout for long running tests
  Bazel: Fix lint warning flagged by buildifier
  Update bazlets to latest version
  Bazel: Add missing dependencies for ArchiveCommandTest
  Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
  Add support for nanoseconds and microseconds for Config#getTimeUnit
  Optionally measure filesystem timestamp resolution asynchronously
  Delete unused FileTreeIteratorWithTimeControl
  FileSnapshot#equals: consider UNKNOWN_SIZE
  Timeout measuring file timestamp resolution after 2 seconds
  Fix RacyGitTests#testRacyGitDetection
  Change RacyGitTests to create a racy git situation in a stable way
  Deprecate Constants.CHARACTER_ENCODING in favor of
StandardCharsets.UTF_8
  Fix non-deterministic hash of archives created by ArchiveCommand
  Update Maven plugins ecj, plexus, error-prone
  Update Maven plugins and cleanup Maven warnings
  Make inner classes static where possible
  Fix API problem filters

Change-Id: I238adfd3080a5fed9d64c3c757297da6ea893918
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-08 13:04:38 +02:00
Matthias Sohn 0046b2a8fe Merge branch 'stable-5.1' into stable-5.2
* stable-5.1:
  Fix OpenSshConfigTest#config
  FileSnapshot: fix bug with timestamp thresholding
  In LockFile#waitForStatChange wait in units of file time resolution
  Cache FileStoreAttributeCache per directory
  Fix FileSnapshot#save(long) and FileSnapshot#save(Instant)
  Persist minimal racy threshold and allow manual configuration
  Measure minimum racy interval to auto-configure FileSnapshot
  Reuse FileUtils to recursively delete files created by tests
  Fix FileAttributeCache.toString()
  Add test for racy git detection in FileSnapshot
  Repeat RefDirectoryTest.testGetRef_DiscoversModifiedLoose 100 times
  Fix org.eclipse.jdt.core.prefs of org.eclipse.jgit.junit
  Add missing javadoc in org.eclipse.jgit.junit
  Enhance RepeatRule to report number of failures at the end
  Fix FileSnapshotTests for filesystem with high timestamp resolution
  Retry deleting test files in FileBasedConfigTest
  Measure filesystem timestamp resolution already in test setup
  Refactor FileSnapshotTest to use NIO APIs
  Measure stored timestamp resolution instead of time to touch file
  Handle CancellationException in FileStoreAttributeCache
  Fix FileSnapshot#saveNoConfig
  Use Instant for smudge time in DirCache and DirCacheEntry
  Use Instant instead of milliseconds for filesystem timestamp handling
  Workaround SecurityException in FS#getFsTimestampResolution
  Fix NPE in FS$FileStoreAttributeCache.getFsTimestampResolution
  FS: ignore AccessDeniedException when measuring timestamp resolution
  Add debug trace for FileSnapshot
  Use FileChannel.open to touch file and set mtime to now
  Persist filesystem timestamp resolution and allow manual configuration
  Increase bazel timeout for long running tests
  Bazel: Fix lint warning flagged by buildifier
  Update bazlets to latest version
  Bazel: Add missing dependencies for ArchiveCommandTest
  Bazel: Remove FileTreeIteratorWithTimeControl from BUILD file
  Add support for nanoseconds and microseconds for Config#getTimeUnit
  Optionally measure filesystem timestamp resolution asynchronously
  Delete unused FileTreeIteratorWithTimeControl
  FileSnapshot#equals: consider UNKNOWN_SIZE
  Timeout measuring file timestamp resolution after 2 seconds
  Fix RacyGitTests#testRacyGitDetection
  Change RacyGitTests to create a racy git situation in a stable way
  Deprecate Constants.CHARACTER_ENCODING in favor of StandardCharsets.UTF_8
  Fix non-deterministic hash of archives created by ArchiveCommand
  Update Maven plugins ecj, plexus, error-prone
  Update Maven plugins and cleanup Maven warnings
  Make inner classes static where possible
  Fix API problem filters

Change-Id: Ia57385b2a60f48a5317c8d723721c235d7043a84
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-08-08 11:54:56 +02:00
Matthias Sohn 6857138e19 Cache FileStoreAttributeCache per directory
Cache FileStoreAttributeCache entries since looking up FileStore for a
file may be expensive on some platforms.

Implement a simple LRU cache based on ConcurrentHashMap using a simple
long counter to order access to cache entries.

Change-Id: I4881fa938ad2f17712c05da857838073a2fc4ddb
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>
Also-By: Marc Strapetz <marc.strapetz@syntevo.com>
2019-08-06 14:54:39 +02:00
Matthias Sohn 95e8264cc8 Use Instant instead of milliseconds for filesystem timestamp handling
This enables higher file timestamp resolution on filesystems like ext4,
Mac APFS (1ns) or NTFS (100ns) providing high timestamp resolution on
filesystem level.

Note:
- on some OSes Java 8,9 truncate milliseconds, see
https://bugs.openjdk.java.net/browse/JDK-8177809, fixed in Java 10
- UnixFileAttributes truncates timestamp resolution to microseconds when
converting the internal representation to FileTime exposed in the API,
see https://bugs.openjdk.java.net/browse/JDK-8181493
- WindowsFileAttributes also provides only microsecond resolution

Change-Id: I25ffff31a3c6f725fc345d4ddc2f26da3b88f6f2
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-07-18 03:27:52 +02:00
Matthias Sohn 16760c3e9a Persist filesystem timestamp resolution and allow manual configuration
To enable persisting filesystem timestamp resolution per FileStore add a
new config section to the user global git configuration:

- Config section is "filesystem"
- Config subsection is concatenation of
  - Java vendor (system property "java.vm.vendor")
  - runtime version (system property "java.vm.version")
  - FileStore's name
  - separated by '|'
  e.g.
    "AdoptOpenJDK|1.8.0_212-b03|/dev/disk1s1"
  The prefix is needed since some Java versions do not expose the full
  timestamp resolution of the underlying filesystem. This may also
  depend on the underlying operating system hence concrete key values
  may not be portable.
- Config key for timestamp resolution is "timestampResolution" as a time
  value, supported time units are those supported by
  DefaultTypedConfigGetter#getTimeUnit

If timestamp resolution is already configured for a given FileStore
the configured value is used instead of measuring the resolution.

When timestamp resolution was measured it is persisted in the user
global git configuration.

Example:

[filesystem "AdoptOpenJDK|1.8.0_212-b03|/dev/disk1s1"]
	timestampResolution = 1 seconds

If locking the git config file fails retry saving the resolution up to 5
times in order to workaround races with another thread.

In order to avoid stack overflow use the fallback filesystem timestamp
resolution when loading FileBasedConfig which creates itself a
FileSnapshot to help checking if the config changed.

Note:
- on some OSes Java 8,9 truncate to milliseconds or seconds, see
https://bugs.openjdk.java.net/browse/JDK-8177809, fixed in Java 10
- UnixFileAttributes up to Java 12 truncates timestamp resolution to
microseconds when converting the internal representation to FileTime
exposed in the API, see https://bugs.openjdk.java.net/browse/JDK-8181493
- WindowsFileAttributes also provides only microsecond resolution up to
Java 12

Hence do not attempt to manually configure a higher timestamp resolution
than supported by the Java version being used at runtime.

Bug: 546891
Bug: 548188
Change-Id: Iff91b8f9e6e5e2295e1463f87c8e95edf4abbcf8
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-07-17 09:42:14 +02:00
Matthias Sohn 850b9d7540 Timeout measuring file timestamp resolution after 2 seconds
It was reported that measuring file timestamp resolution may hang
indefinitely on nfs. Hence timeout this measurement at the known worst
filesystem timestamp resolution (FAT) of 2 seconds.

Bug: 548188
Change-Id: I17004b0aa49d5b0e76360a008af3adb911b289c0
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-07-03 21:34:29 +02:00
Dave Borowitz 4973f05252 RevWalk: Add a setFirstParent that mimics C git's --first-parent
RevWalk does not currently provide a --first-parent equivalent and the
feature has been requested.

Add a field to the RevWalk class to specify whether walks should
traverse first parents only. Modify Generator implementations to support
the feature.

Change-Id: I4a9a0d5767f82141dcf6d08659d7cb77c585fae4
Signed-off-by: Dave Borowitz <dborowitz@google.com>
Signed-off-by: Alex Spradlin <alexaspradlin@google.com>
2019-06-27 16:27:33 -07:00
Michael Keppler e9abe09809 Retry loading config when locked by another process
When loading the config, a FileNotFoundException may occur if the file
exists but cannot be read (see [1]). This is the case on Windows with a
virus scanner checking the file. Therefore if the file exists and that
exception is thrown, retry multiple times, similar to how this was
already implemented for IOException.

[1] https://docs.oracle.com/javase/8/docs/api/java/io/FileNotFoundException.html

Bug: 529522
Change-Id: Ic5dc3b7b24bb0005d6256ed00513bc7c0b91e613
Signed-off-by: Michael Keppler <Michael.Keppler@gmx.de>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-06-10 19:59:17 +02:00
Matthias Sohn 786380bd5e Warn if configured cookie file is missing
We logged a stack trace if the configured http.cookieFile was missing.
Instead only log a warning.

Bug: 548081
Change-Id: I42e39f5ad8ffce7b43162e5068f60af073b8a126
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-06-09 12:27:18 +02:00
Konrad Windszus d7bd2e700c Support reading and writing cookies.
The git config entries "http.cookieFile" and
"http.saveCookies" are correctly evaluated.

Bug: 488572
Change-Id: Icfeeea95e1a5bac3fa4438849d4ac2306d7d5562
Signed-off-by: Konrad Windszus <konrad_w@gmx.de>
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
2019-06-06 19:02:17 +02:00
Andrey Loskutov e57a37e767 RevWalkUtils: add progress callback to findBranchesReachableFrom
Offer a version of findBranchesReachableFrom method with progress
monitor callback. This is required to allow UI clients to cancel long
running operations and show progress.

Bug: 547642
Change-Id: I31d1de54dbaa6ffb11e03da4c447963e8defa1d0
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
2019-05-25 13:52:49 +02:00
Thomas Wolf efe6d2bb5b GPG: check that the key found is a signing key
Throw an exception if not.

Change-Id: I60f36b271d5f44c6dc475302b169cb5b8a1e3945
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2019-05-21 18:13:40 +02:00
Han-Wen Nienhuys bbff3ff008 Clarify error message for invalid Windows characters
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Change-Id: I20c37d70fc78d745f83b9ce702777535b16b8dfe
2019-03-29 17:34:17 -04:00
Thomas Wolf d9d9862402 Replace "Checkout" by "Check out" when used as a verb
One occurrence in core JGit, several in jgit.pgm. One unused
occurrence in jgit.pgm; remove it.

Change-Id: I04c3dd9d9f542f1e1ac6df4cbf03bcefb6bfdf78
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
2019-03-15 21:08:46 +01:00