Matthias Sohn [Tue, 1 Jun 2021 14:36:43 +0000 (16:36 +0200)]
Merge branch 'master' into stable-5.12
* master:
Update Orbit to S20210518003616 and ant to 1.10.10.v20210426-1926
Skip detecting content renames for binary files
RepoCommand: Retry commit on LockFailure
Finish upgrading eclipse-jarsigner-plugin to 1.3.1
Upgrade maven-javadoc-plugin to 3.3.0
Update maven-project-info-reports-plugin to 3.1.2
Update spotbugs-maven-plugin to 4.2.3
This is similar to change Idbc2c29bd that skipped detecting content
renames for large files. With this change, we added a new option in
RenameDetector called "skipContentRenamesForBinaryFiles", that when set,
causes binary files with any slight modification to be identified as
added/deleted. The default for this boolean is false, so preserving
current behaviour.
* changes:
Finish upgrading eclipse-jarsigner-plugin to 1.3.1
Upgrade maven-javadoc-plugin to 3.3.0
Update maven-project-info-reports-plugin to 3.1.2
Update spotbugs-maven-plugin to 4.2.3
Ivan Frade [Mon, 24 May 2021 16:53:08 +0000 (09:53 -0700)]
RepoCommand: Retry commit on LockFailure
When the target repository is receiving commits from other sources,
the repo command commit can fail with a LOCK_FAILURE. We could let
callers retry, but then the command needs to redo all the work (opening
all subrepos to recreate the tree).
Retry the commit in LOCK_FAILURE inside the command. The commit
rewrites the whole tree, so it shouldn't have merge errors. Use an
exponential delay with jitter for the retries.
Change-Id: I517b6f2afd16a4b695e6cf471b5d6cf492024ec4 Signed-off-by: Ivan Frade <ifrade@google.com>
Matthias Sohn [Wed, 26 May 2021 15:21:02 +0000 (17:21 +0200)]
Merge branch 'master' into stable-5.12
* master:
RepoCommand: Do not set 'branch' if the revision is a tag
pgm: rewrite parents when --parents flag is passed
ApplyCommand: fix "no newline at end" detection
ApplyCommand: handle completely empty context lines in text patches
ApplyCommand: use byte arrays for text patches, not strings
ApplyCommand: support binary patches
ApplyCommand: add a stream to apply a delta patch
ApplyCommand: add streams to read/write binary patch hunks
ApplyCommand: add a base-85 codec
ApplyCommand: convert to git internal format before applying patch
SSH config: fix whitespace handling
SSH config: fix negated patterns
Fix @since tag for introduction of PUBKEY_ACCEPTED_ALGORITHMS
Prepare 5.11.2-SNAPSHOT builds
JGit v5.11.1.202105131744-r
Add a cgit interoperability test for LockFile
Add TemporaryBuffer.toString(int limit)
LockFile: create OutputStream only when needed
Add git config for conflict style merge/diff3
Change-Id: If7751ff99079eaea31ed1fce811d141ecf209727 Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Ivan Frade [Tue, 25 May 2021 00:31:25 +0000 (17:31 -0700)]
RepoCommand: Do not set 'branch' if the revision is a tag
The "branch" field in the .gitmodules is the signal for gerrit to keep
the superproject autoupdated. Tags are immutable and there is no need to
track them, plus the cgit client requires the field to be a "remote
branch name" but not a tag.
Do not set the "branch" field if the revision is a tag. Keep those tags
in another field ("ref") as they help other tools to find the commit in
the destination repository.
We can still have false negatives when a refname is not fully qualified,
but this check covers e.g. the most common case in android.
Note that the javadoc of #setRecordRemoteBranch already mentions that
"submodules that request a tag will not have branch name recorded".
Change-Id: Ib1c321a4d3b7f8d51ca2ea204f72dc0cfed50c37 Signed-off-by: Ivan Frade <ifrade@google.com>
Matthias Sohn [Wed, 26 May 2021 12:12:17 +0000 (08:12 -0400)]
Merge changes from topic "apply"
* changes:
ApplyCommand: fix "no newline at end" detection
ApplyCommand: handle completely empty context lines in text patches
ApplyCommand: use byte arrays for text patches, not strings
ApplyCommand: support binary patches
ApplyCommand: add a stream to apply a delta patch
ApplyCommand: add streams to read/write binary patch hunks
ApplyCommand: add a base-85 codec
ApplyCommand: convert to git internal format before applying patch
kylezhao [Tue, 30 Mar 2021 03:04:12 +0000 (11:04 +0800)]
pgm: rewrite parents when --parents flag is passed
According to [1], we should rewrite parents in RevWalkTextBuiltin
when variable parents is true.
[1]
https://git-scm.com/docs/git-rev-list#Documentation/git-rev-list.txt---parents
Thomas Wolf [Wed, 10 Mar 2021 18:26:39 +0000 (19:26 +0100)]
ApplyCommand: fix "no newline at end" detection
Check the last line of the last hunk of a file, not the last line of
the whole patch.
Note that C git only checks that this line starts with "\ " and is at
least 12 characters long because of possible different texts when non-
English messages are used.
Change-Id: I0db81699eb3e99ed7b536a3e2b8dc97df1f58a89 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Thomas Wolf [Wed, 10 Mar 2021 17:04:25 +0000 (18:04 +0100)]
ApplyCommand: handle completely empty context lines in text patches
C git treats completely empty lines as empty context lines (which
traditionally have a single blank). Apparently newer GNU diff may
produce such lines; see [1]. ("Newer" meaning "since 2006"...)
Thomas Wolf [Wed, 10 Mar 2021 13:25:37 +0000 (14:25 +0100)]
ApplyCommand: use byte arrays for text patches, not strings
Instead of converting the patch bytes to strings apply the patch on
byte level, like C git does. Converting the input lines and the hunk
lines from bytes to strings and then applying the patch based on
strings may give surprising results if a patch converts a text file
from one encoding to another. Moreover, in the end we don't know which
encoding to use to write the result.
Previous code just wrote the result as UTF-8, which forcibly changed
the encoding if the original input had some other encoding (even if the
patch had the same non-UTF-8 encoding). It was also wrong if the input
was UTF-8, and the patch should have changed the encoding to something
else.
So use ByteBuffers instead of Strings. This has the additional advantage
that all these ByteBuffers can share the underlying byte arrays of the
input and of the patch, so it also reduces memory consumption.
Change-Id: I450975f2ba0e7d0bec8973e3113cc2e7aea187ee Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Thomas Wolf [Sun, 7 Mar 2021 17:50:23 +0000 (18:50 +0100)]
ApplyCommand: support binary patches
Implement applying binary patches. Handles both literal and delta
patches. Note that C git also runs binary files through the clean
and smudge filters. Implement the same safeguards against corrupted
patches as in C git: require the full OIDs to be present in the patch
file, and apply a binary patch only if both pre- and post-image hashes
match.
Add tests for applying literal and delta patches.
Bug: 371725
Change-Id: I71dc214fe4145d7cc8e4769384fb78c7d0d6c220 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Thomas Wolf [Sun, 7 Mar 2021 17:49:01 +0000 (18:49 +0100)]
ApplyCommand: add a stream to apply a delta patch
Add a new BinaryDeltaInputStream that applies a delta provided by
another InputStream to a given base. Because delta application needs
random access to the base, the base itself cannot be yet another
InputStream. But at least this enables streaming of the result.
Add a simple test using delta hunks generated by C git.
Bug: 371725
Change-Id: Ibd26fa2f49860737ad5c5387f7f4870d3e85e628 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Thomas Wolf [Fri, 5 Mar 2021 23:00:15 +0000 (00:00 +0100)]
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>
Thomas Wolf [Fri, 5 Mar 2021 22:55:18 +0000 (23:55 +0100)]
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>
Thomas Wolf [Tue, 2 Mar 2021 08:53:08 +0000 (09:53 +0100)]
ApplyCommand: convert to git internal format before applying patch
Applying a patch on Windows failed if the patch had the (normal)
single-LF line endings, but the file on disk had the usual Windows
CR-LF line endings.
Git (and JGit) compute diffs on the git-internal blob, i.e., after
CR-LF transformation and clean filtering. Applying patches to files
directly is thus incorrect and may fail if CR-LF settings don't
match, or if clean/smudge filtering is involved.
Change ApplyCommand to run the file content through the check-in
filters before applying the patch, and run the result through the
check-out filters. This makes patch application succeed even if the
patch has single-LFs, but the file has CR-LF and core.autocrlf is
true.
Add tests for various combinations of line endings in the file and in
the patch, and a test to verify the clean/smudge handling.
See also [1].
Running the file though clean/smudge may give strange results with
LFS-managed files. JGit's DiffFormatter has some extra code and
applies the smudge filter again after having run the file through
the check-in filters (CR-LF and clean). So JGit can actually produce
a diff on LFS-managed files using the normal diff machinery. (If it
doesn't run out of memory, that is. After all, LFS is intended for
_large_ files.) How such a diff would be applied with either C git
or JGit is entirely unclear; neither has any code for this special
case. Compare also [2].
Note that C git just doesn't know about LFS and always diffs after
the check-in filter chain, so for LFS files, it'll produce a diff
of the LFS pointers.
Thomas Wolf [Sat, 15 May 2021 16:13:04 +0000 (18:13 +0200)]
SSH config: fix negated patterns
Negated patterns were handled wrongly. According to the OpenBSD
ssh_config man page,[1] a negated pattern never matches. Negated
patterns make only sense if there are positive patterns; the
negated pattern then can define exceptions for the positive
patterns.
OpenSshConfigFile did this wrongly. It handled "!foo" as "matching
everything but foo", but actually the semantics is "if the input is
"foo", this entry doesn't apply. If the input is anything else,
other patterns determine whether the entry may apply.".
[1] https://man.openbsd.org/ssh_config
Change-Id: I50f6e46581b7ece4c949eddf62f4a265573ec29e Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Matthias Sohn [Mon, 10 May 2021 22:56:57 +0000 (00:56 +0200)]
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
Thomas Wolf [Tue, 4 May 2021 21:48:56 +0000 (23:48 +0200)]
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>
Thomas Wolf [Tue, 4 May 2021 21:48:56 +0000 (23:48 +0200)]
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>
Thomas Wolf [Mon, 12 Apr 2021 21:50:54 +0000 (23:50 +0200)]
Implement ours/theirs content conflict resolution
Git has different conflict resolution strategies:
* There is a tree merge strategy "ours" which just ignores any changes
from theirs ("-s ours"). JGit also has the mirror strategy "theirs"
ignoring any changes from "ours". (This doesn't exist in C git.)
Adapt StashApplyCommand and CherrypickCommand to be able to use those
tree merge strategies.
* For the resolve/recursive tree merge strategies, there are content
conflict resolution strategies "ours" and "theirs", which resolve
any conflict hunks by taking the "ours" or "theirs" hunk. In C git
those correspond to "-Xours" or -Xtheirs". Implement that in
MergeAlgorithm, and add API to set and pass through such a strategy
for resolving content conflicts.
* The "ours/theirs" content conflict resolution strategies also apply
for binary files. Handle these cases in ResolveMerger.
Note that the content conflict resolution strategies ("-X ours/theirs")
do _not_ apply to modify/delete or delete/modify conflicts. Such
conflicts are always reported as conflicts by C git. They do apply,
however, if one side completely clears a file's content.
Bug: 501111
Change-Id: I2c9c170c61c440a2ab9c387991e7a0c3ab960e07 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
Allow file mode conflicts in virtual base commit on recursive merge.
Similar to https://git.eclipse.org/r/c/jgit/jgit/+/175166, ignore
path that have conflicts on attributes, so that the virtual base could
be used by RecursiveMerger.
Change-Id: I99c95445a305558d55bbb9c9e97446caaf61c154 Signed-off-by: Marija Savtchouk <mariasavtchouk@google.com>
Thomas Wolf [Mon, 22 Mar 2021 11:20:52 +0000 (12:20 +0100)]
sshd: don't lock the known_hosts files on reading
Similar to git config file reading lock the file only when writing.
There may still be lock conflicts on writing, but those in the worst
case result in an entry not being added and thus being asked for later
again.
Because the OpenSshServerkeyDatabase and its HostKeyFiles may be (and
usually are) shared between different SSH sessions, we still need to
ensure in-process mutual exclusion.
Bug: 559548
Change-Id: I4af97628deff9eaac2520576917c856949f2680d Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Thomas Wolf [Sat, 20 Mar 2021 17:54:17 +0000 (18:54 +0100)]
Allow info messages in UsernamePasswordCredentialsProvider
o.e.j.ssh.apache produces passphrase prompts containing
InformationalMessage items to show the fingerprint of the key
the passphrase is being asked for. Allow this so that the credentials
provider can be used with o.e.j.ssh.apache.
Change-Id: Ibc2ffd3a987d3118952726091b9b80442972dfd8 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>
Apache MINA sshd has an implementation of this, but it doesn't comply
to RFC 8308 [1] and it is buggy. (See SSHD-1141 [2].)
Add a simpler KexExtensionHandler and if the server sends extension
server-sig-algs, use its value to re-order the chosen signature
algorithms such that the algorithms the server announced as supported
are at the front.
If the server didn't tell us anything, don't do anything. RFC 8308
suggests for RSA to default to ssh-rsa, but says once rsa-sha2-* was
"widely enough" adopted, defaulting to that might be OK.
Currently we seem to be in a transition phase; Fedora 33 has already
disabled ssh-rsa by default, and openssh is about to do so. Whatever
we might do without info from the server, it'd be good for some servers
and bad for others. So don't do anything and let the user re-order via
ssh config PubkeyAcceptedAlgorithms on a case-by-case basis.
Matthias Sohn [Fri, 26 Mar 2021 08:55:58 +0000 (09:55 +0100)]
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>
Thomas Wolf [Fri, 19 Mar 2021 08:35:34 +0000 (09:35 +0100)]
sshd: try all configured signature algorithms for a key
For RSA keys, there may be several configured signature algorithms:
rsa-sha2-512, rsa-sha2-256, and ssh-rsa. Upstream sshd has bug
SSHD-1105 [1] and always and unconditionally uses only the first
configured algorithm. With the default order, this means that it cannot
connect to a server that knows only ssh-rsa, like for instance Apache
MINA sshd servers older than 2.6.0.
This affects for instance bitbucket.org or also AWS Code Commit.
Re-introduce our own pubkey authenticator that fixes this.
Note that a server may impose a penalty (back-off delay) for subsequent
authentication attempts with signature algorithms unknown to the server.
In such cases, users can re-order the signature algorithm list via the
PubkeyAcceptedAlgorithms (formerly PubkeyAcceptedKeyTypes) ssh config.
Apache MINA sshd 2.6.0 appears to use only the first appropriate
public key signature algorithm for a particular key. See [1]. For
RSA keys, that is rsa-sha2-512. This breaks authentication at servers
that only know the older (and deprecated) ssh-rsa algorithm.
With PubkeyAcceptedAlgorithms, users can re-order algorithms in
the ssh config file per host, if needed. Setting
PubkeyAcceptedAlgorithms ^ssh-rsa
will put "ssh-rsa" at the front of the list of algorithms, and then
authentication at such servers with RSA keys works again.
Adithya Chakilam [Tue, 23 Feb 2021 19:58:03 +0000 (13:58 -0600)]
Optimize RevWalkUtils.findBranchesReachableFrom()
In [1], improved RevWalk.getMergedInto() is introduced to avoid repeated
work while performing RevWalk.isMergedInto() on many refs. Modify
findBranchesReachableFrom() to use it.
In cases where we need to determine if a given commit is merged
into many refs, using isMergedInto(base, tip) for each ref would
cause multiple unwanted walks.
getMergedInto() marks the unreachable commits as uninteresting
which would then avoid walking that same path again.
Using the same api, also introduce isMergedIntoAny() and
isMergedIntoAll()
Change-Id: I65de9873dce67af9c415d1d236bf52d31b67e8fe Signed-off-by: Adithya Chakilam <quic_achakila@quicinc.com> Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>
There are two code paths for detecting renames: one on tree diffs
(using DiffFormatter#scan) and the other on single file diffs (using
DiffFormatter#format). The latter skips binary and large files
for rename detection - check [1], but the former doesn't.
This change skips content rename detection for the tree diffs case for
large files. This is essential to avoid expensive computations while
reading the file, especially for callers who don't want to pay that
cost. Content renames are those which involve files with slightly
modified content. Exact renames will still be identified.
The default threshold for file sizes is reused from
PackConfig.DEFAULT_BIG_FILE_THRESHOLD: 50 MB.
Thomas Wolf [Tue, 9 Mar 2021 21:23:14 +0000 (22:23 +0100)]
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.)
projects / jgit.git / log