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Implement the same SHA1 collision resistent algorithm used by both the
Git CLI and libgit2.
Only commits with input that match the unavoidable bit conditions will be further
processed, which will result in different hashes.
Which is the same behaviour experienced in the Git CLI and Libgit2.
Users can override the hash algorithm used with:
hash.RegisterHash(crypto.SHA1, sha1.New)
xref links:
https://github.com/libgit2/libgit2/pull/4136/commits/2dfd1294f7a694bfa9e864a9489ae3cb318a5ed0
https://github.com/git/git/commit/28dc98e343ca4eb370a29ceec4c19beac9b5c01e
Signed-off-by: Paulo Gomes <pjbgf@linux.com>
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#411
This commit adjusts the transport/ssh logic in command.connect(), so that it
now auto-populates ssh.ClientConfig.HostKeyAlgorithms. The algorithms are
chosen based on the known host keys for the target host, as obtained from the
known_hosts file.
In order to look-up the algorithms from the known_hosts file, external module
github.com/skeema/knownhosts is used. This package is just a thin wrapper
around golang.org/x/crypto/ssh/knownhosts, adding an extra mechanism to query
the known_hosts keys, implemented in a way which avoids duplication of any
golang.org/x/crypto/ssh/knownhosts logic.
Because HostKeyAlgorithms vary by target host, some related logic for setting
HostKeyCallback has been moved out of the various AuthMethod implementations.
This was necessary because the old HostKeyCallbackHelper is not host-specific.
Since known_hosts handling isn't really tied to AuthMethod anyway, it seems
reasonable to separate these. Previously-exported types/methods remain in
place for backwards compat, but some of them are now unused.
For testing approach, see pull request. Issue #411 can only be reproduced
via end-to-end / integration testing, since it requires actually launching
an SSH connection, in order to see the key mismatch error triggered from
https://github.com/golang/go/issues/29286 as the root cause.
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Added in Go 1.12, this means we need one less dependency.
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Commands used:
go get github.com/xanzy/ssh-agent@latest
go mod tidy
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improve path security
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github.com/ProtonMail/go-crypto/openpgp (#283)
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Git creates `.git/commondir` when there are custom worktrees (see "git worktree add" related commands).
`.git/commondir` in such case contains a link to another dot-git repository tree, which could contain some folders like:
- objects;
- config;
- refs;
- etc.
In this PR a new dotgit.RepositoryFilesystem struct is defined, which is billy.Filesystem interface compatible object-wrapper, that can handle commondir and dispatch all operations to the correct file path.
`git.PlainOpen` remain unchanged, but `git.PlainOpenWithOptions` has a new option: `PlainOpenOptions.EnableDotGitCommonDir=true|false` (which is false by default). When `EnableDotGitCommonDir=true` repository-open procedure will read `.git/commondir` (if it exists) and then create dotgit.RepositoryFilesystem object initialized with 2 filesystems. This object then passed into storage and then into dotgit.DotGit as `billy.Filesystem` interface. This object will catch all filesystem operations and dispatch to the correct repository-filesystem (dot-git or common-dot-git) according to the rules described in the doc: https://git-scm.com/docs/gitrepository-layout#Documentation/gitrepository-layout.txt. EnableDotGitCommonDir option will only work with the filesystem-backed storage.
Also worktree_test.go has been adopted from an older, already existing existing PR: https://github.com/src-d/go-git/pull/1098. This PR needs new fixtures added in the following PR: https://github.com/go-git/go-git-fixtures/pull/1.
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In the British TZ the following time:
```
1579639200 +0100
```
will be erroneously parsed as being with the GMT TZ.
This leads to multiple errors with GPG validation.
This PR fixes this by using the provided TZ information to
create a FixedZone and sets that as the TZ
Signed-off-by: Andrew Thornton <art27@cantab.net>
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Signed-off-by: Máximo Cuadros <mcuadros@gmail.com>
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This enables interacting with git remotes over SSH when behind a SOCKSv5
firewall.
Signed-off-by: Jacob Blain Christen <dweomer5@gmail.com>
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Signed-off-by: Máximo Cuadros <mcuadros@gmail.com>
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Signed-off-by: Dave Henderson <dhenderson@gmail.com>
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Signed-off-by: Máximo Cuadros <mcuadros@gmail.com>
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