Commit Graph

297 Commits

Author SHA1 Message Date
qwerty287
65952417a8
Add API to get PR by base/head (#29242)
Closes https://github.com/go-gitea/gitea/issues/16289

Add a new API `/repos/{owner}/{repo}/pulls/{base}/{head}` to get a PR by
its base and head branch.
2024-02-26 02:39:01 +00:00
wxiaoguang
49e4826747
Refactor "user/active" related logic (#29390)
And add more tests. Remove a lot of fragile "if" blocks.

The old logic is kept as-is.
2024-02-25 21:55:00 +00:00
KN4CK3R
1c6858543c
Integrate alpine noarch packages into other architectures index (#29137)
Fixes #26691
Revert #24972

The alpine package manager expects `noarch` packages in the index of
other architectures too.

---------

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2024-02-25 15:10:55 +00:00
KN4CK3R
f79c9e817a
Use crypto/sha256 (#29386)
Go 1.21 improved the performance of `crypto/sha256`. It's now similar to
`minio/sha256-simd`, so we should just use the standard libs.

https://go.dev/doc/go1.21#crypto/sha256
https://go-review.googlesource.com/c/go/+/408795
https://github.com/multiformats/go-multihash/pull/173
2024-02-25 13:32:13 +00:00
Zettat123
c42083a339
Allow non-admin users to delete review requests (#29057)
Fix #14459

The following users can add/remove review requests of a PR
- the poster of the PR
- the owner or collaborators of the repository
- members with read permission on the pull requests unit
2024-02-24 12:38:43 +00:00
6543
4ba642d07d
Revert "Support SAML authentication (#25165)" (#29358)
This reverts #25165 (5bb8d1924d), as there
was a chance some important reviews got missed.

so after reverting this patch it will be resubmitted for reviewing again

https://github.com/go-gitea/gitea/pull/25165#issuecomment-1960670242

temporary Open #5512 again
2024-02-24 12:18:49 +08:00
KN4CK3R
2a278b996f
Add support for linguist-detectable and linguist-documentation (#29267)
Add support for `linguist-detectable` and `linguist-documentation`
Add tests for the attributes


https://github.com/github-linguist/linguist/blob/master/docs/overrides.md#detectable

https://github.com/github-linguist/linguist/blob/master/docs/overrides.md#documentation
2024-02-23 17:24:27 +00:00
techknowlogick
5bb8d1924d
Support SAML authentication (#25165)
Closes https://github.com/go-gitea/gitea/issues/5512

This PR adds basic SAML support
- Adds SAML 2.0 as an auth source
- Adds SAML configuration documentation
- Adds integration test:
- Use bare-bones SAML IdP to test protocol flow and test account is
linked successfully (only runs on Postgres by default)
- Adds documentation for configuring and running SAML integration test
locally

Future PRs:
- Support group mapping
- Support auto-registration (account linking)

Co-Authored-By: @jackHay22

---------

Co-authored-by: jackHay22 <jack@allspice.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: morphelinho <morphelinho@users.noreply.github.com>
Co-authored-by: Zettat123 <zettat123@gmail.com>
Co-authored-by: Yarden Shoham <git@yardenshoham.com>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: silverwind <me@silverwind.io>
2024-02-23 00:08:17 +00:00
KN4CK3R
f74c869221
Prevent double use of git cat-file session. (#29298)
Fixes the reason why #29101 is hard to replicate.
Related #29297

Create a repo with a file with minimum size 4097 bytes (I use 10000) and
execute the following code:
```go
gitRepo, err := gitrepo.OpenRepository(db.DefaultContext, <repo>)
assert.NoError(t, err)

commit, err := gitRepo.GetCommit(<sha>)
assert.NoError(t, err)

entry, err := commit.GetTreeEntryByPath(<file>)
assert.NoError(t, err)

b := entry.Blob()

// Create a reader
r, err := b.DataAsync()
assert.NoError(t, err)
defer r.Close()

// Create a second reader
r2, err := b.DataAsync()
assert.NoError(t, err) // Should be no error but is ErrNotExist
defer r2.Close()
```

The problem is the check in `CatFileBatch`:

79217ea63c/modules/git/repo_base_nogogit.go (L81-L87)
`Buffered() > 0` is used to check if there is a "operation" in progress
at the moment. This is a problem because we can't control the internal
buffer in the `bufio.Reader`. The code above demonstrates a sequence
which initiates an operation for which the code thinks there is no
active processing. The second call to `DataAsync()` therefore reuses the
existing instances instead of creating a new batch reader.
2024-02-21 19:54:17 +01:00
6543
217d71c48a
Workaround to clean up old reviews on creating a new one (#28554)
close  #28542

blocks  #28544

---
*Sponsored by Kithara Software GmbH*
2024-02-19 14:42:18 +01:00
Yarden Shoham
1d275c1748
Fix labels referencing the wrong ID in the user profile settings (#29199)
2 instances of `for` with a wrong value and 1 `for` that had a reference
to a `name` instead of `id`.

---------

Signed-off-by: Yarden Shoham <git@yardenshoham.com>
2024-02-17 15:01:25 +00:00
wxiaoguang
f3eb835886
Refactor locale&string&template related code (#29165)
Clarify when "string" should be used (and be escaped), and when
"template.HTML" should be used (no need to escape)

And help PRs like  #29059 , to render the error messages correctly.
2024-02-14 21:48:45 +00:00
Chris Copeland
47b5965862
Add merge style fast-forward-only (#28954)
With this option, it is possible to require a linear commit history with
the following benefits over the next best option `Rebase+fast-forward`:
The original commits continue existing, with the original signatures
continuing to stay valid instead of being rewritten, there is no merge
commit, and reverting commits becomes easier.

Closes #24906
2024-02-12 23:37:23 +01:00
wxiaoguang
ee242a08e9
Refactor issue template parsing and fix API endpoint (#29069)
The old code `GetTemplatesFromDefaultBranch(...) ([]*api.IssueTemplate,
map[string]error)` doesn't really follow Golang's habits, then the
second returned value might be misused. For example, the API function
`GetIssueTemplates` incorrectly checked the second returned value and
always responds 500 error.

This PR refactors GetTemplatesFromDefaultBranch to
ParseTemplatesFromDefaultBranch and clarifies its behavior, and fixes the
API endpoint bug, and adds some tests.

And by the way, add proper prefix `X-` for the header generated in
`checkDeprecatedAuthMethods`, because non-standard HTTP headers should
have `X-` prefix, and it is also consistent with the new code in
`GetIssueTemplates`
2024-02-12 05:04:10 +00:00
KN4CK3R
f8b471ace1
Unify user update methods (#28733)
Fixes #28660
Fixes an admin api bug related to `user.LoginSource`
Fixed `/user/emails` response not identical to GitHub api

This PR unifies the user update methods. The goal is to keep the logic
only at one place (having audit logs in mind). For example, do the
password checks only in one method not everywhere a password is updated.

After that PR is merged, the user creation should be next.
2024-02-04 13:29:09 +00:00
Lunny Xiao
5f82ead13c
Simplify how git repositories are opened (#28937)
## Purpose
This is a refactor toward building an abstraction over managing git
repositories.
Afterwards, it does not matter anymore if they are stored on the local
disk or somewhere remote.

## What this PR changes
We used `git.OpenRepository` everywhere previously.
Now, we should split them into two distinct functions:

Firstly, there are temporary repositories which do not change:

```go
git.OpenRepository(ctx, diskPath)
```

Gitea managed repositories having a record in the database in the
`repository` table are moved into the new package `gitrepo`:

```go
gitrepo.OpenRepository(ctx, repo_model.Repo)
```

Why is `repo_model.Repository` the second parameter instead of file
path?
Because then we can easily adapt our repository storage strategy.
The repositories can be stored locally, however, they could just as well
be stored on a remote server.

## Further changes in other PRs
- A Git Command wrapper on package `gitrepo` could be created. i.e.
`NewCommand(ctx, repo_model.Repository, commands...)`. `git.RunOpts{Dir:
repo.RepoPath()}`, the directory should be empty before invoking this
method and it can be filled in the function only. #28940
- Remove the `RepoPath()`/`WikiPath()` functions to reduce the
possibility of mistakes.

---------

Co-authored-by: delvh <dev.lh@web.de>
2024-01-27 21:09:51 +01:00
silverwind
60e4a98ab0
Preserve BOM in web editor (#28935)
The `ToUTF8*` functions were stripping BOM, while BOM is actually valid
in UTF8, so the stripping must be optional depending on use case. This
does:

- Add a options struct to all `ToUTF8*` functions, that by default will
strip BOM to preserve existing behaviour
- Remove `ToUTF8` function, it was dead code
- Rename `ToUTF8WithErr` to `ToUTF8`
- Preserve BOM in Monaco Editor
- Remove a unnecessary newline in the textarea value. Browsers did
ignore it, it seems but it's better not to rely on this behaviour.

Fixes: https://github.com/go-gitea/gitea/issues/28743
Related: https://github.com/go-gitea/gitea/issues/6716 which seems to
have once introduced a mechanism that strips and re-adds the BOM, but
from what I can tell, this mechanism was removed at some point after
that PR.
2024-01-27 18:02:51 +00:00
KN4CK3R
caad931385
Prevent anonymous container access if RequireSignInView is enabled (#28877)
Fixes #28875

If `RequireSignInView` is enabled, the ghost user has no access rights.
2024-01-21 16:31:29 +00:00
KN4CK3R
461d8b53c2
Fix some RPM registry flaws (#28782)
Related #26984
(https://github.com/go-gitea/gitea/pull/26984#issuecomment-1889588912)

Fix admin cleanup message.
Fix models `Get` not respecting default values.
Rebuild RPM repository files after cleanup.
Do not add RPM group to package version name.
Force stable sorting of Alpine/Debian/RPM repository data.
Fix missing deferred `Close`.
Add tests for multiple RPM groups.
Removed non-cached `ReplaceAllStringRegex`.

If there are multiple groups available, it's stated in the package
installation screen:

![grafik](https://github.com/go-gitea/gitea/assets/1666336/8f132760-882c-4ab8-9678-77e47dfc4415)
2024-01-19 11:37:10 +00:00
FuXiaoHei
ad98ea63ee
Fix uploaded artifacts should be overwritten (#28726)
Fix `Uploaded artifacts should be overwritten`
https://github.com/go-gitea/gitea/issues/28549

When upload different content to uploaded artifact, it checks that
content size is not match in db record with previous artifact size, then
the new artifact is refused.

Now if it finds uploading content size is not matching db record when
receiving chunks, it updates db records to follow the latest size value.
2024-01-17 11:21:16 +08:00
Viktor Kuzmin
49eb168677
Retarget depending pulls when the parent branch is deleted (#28686)
Sometimes you need to work on a feature which depends on another (unmerged) feature.
In this case, you may create a PR based on that feature instead of the main branch.
Currently, such PRs will be closed without the possibility to reopen in case the parent feature is merged and its branch is deleted.
Automatic target branch change make life a lot easier in such cases.
Github and Bitbucket behave in such way.

Example:
$PR_1$: main <- feature1
$PR_2$: feature1 <- feature2

Currently, merging $PR_1$ and deleting its branch leads to $PR_2$ being closed without the possibility to reopen.
This is both annoying and loses the review history when you open a new PR.

With this change, $PR_2$ will change its target branch to main ($PR_2$: main <- feature2) after $PR_1$ has been merged and its branch has been deleted.

This behavior is enabled by default but can be disabled.
For security reasons, this target branch change will not be executed when merging PRs targeting another repo. 

Fixes #27062
Fixes #18408

---------

Co-authored-by: Denys Konovalov <kontakt@denyskon.de>
Co-authored-by: delvh <dev.lh@web.de>
2024-01-17 01:44:56 +01:00
Mihir Joshi
b8270240bf
Fix reverting a merge commit failing (#28794)
Fixes #22236

---
Error occurring currently while trying to revert commit using read-tree
-m approach:
> 2022/12/26 16:04:43 ...rvices/pull/patch.go:240:AttemptThreeWayMerge()
[E] [63a9c61a] Unable to run read-tree -m! Error: exit status 128 -
fatal: this operation must be run in a work tree
> 	 - fatal: this operation must be run in a work tree

We need to clone a non-bare repository for `git read-tree -m` to work.

bb371aee6e
adds support to create a non-bare cloned temporary upload repository.

After cloning a non-bare temporary upload repository, we [set default
index](https://github.com/go-gitea/gitea/blob/main/services/repository/files/cherry_pick.go#L37)
(`git read-tree HEAD`).
This operation ends up resetting the git index file (see investigation
details below), due to which, we need to call `git update-index
--refresh` afterward.


Here's the diff of the index file before and after we execute
SetDefaultIndex: https://www.diffchecker.com/hyOP3eJy/

Notice the **ctime**, **mtime** are set to 0 after SetDefaultIndex.

You can reproduce the same behavior using these steps:
```bash
$ git clone https://try.gitea.io/me-heer/test.git -s -b main
$ cd test
$ git read-tree HEAD
$ git read-tree -m 1f085d7ed8 1f085d7ed8 9933caed00
error: Entry '1' not uptodate. Cannot merge.
```

After which, we can fix like this:
```
$ git update-index --refresh
$ git read-tree -m 1f085d7ed8 1f085d7ed8 9933caed00
```
2024-01-16 15:06:51 +00:00
Lunny Xiao
70c4aad8e1
Move more functions to db.Find (#28419)
Following #28220

This PR move more functions to use `db.Find`.

---------

Co-authored-by: delvh <dev.lh@web.de>
2024-01-15 02:19:25 +00:00
Earl Warren
3f342d6dff
Modernize merge button (#28140)
- Make use of the `form-fetch-action` for the merge button, which will
automatically prevent the action from happening multiple times and show
a nice loading indicator as user feedback while the merge request is
being processed by the server.
- Adjust the merge PR code to JSON response as this is required for the
`form-fetch-action` functionality.
- Resolves https://codeberg.org/forgejo/forgejo/issues/774
- Likely resolves the cause of
https://codeberg.org/forgejo/forgejo/issues/1688#issuecomment-1313044

(cherry picked from commit 4ec64c19507caefff7ddaad722b1b5792b97cc5a)

Co-authored-by: Gusted <postmaster@gusted.xyz>
2024-01-15 00:00:47 +02:00
Lunny Xiao
97292da960
Fix schedule tasks bugs (#28691)
Fix #28157 

This PR fix the possible bugs about actions schedule.

## The Changes

- Move `UpdateRepositoryUnit` and `SetRepoDefaultBranch` from models to
service layer
- Remove schedules plan from database and cancel waiting & running
schedules tasks in this repository when actions unit has been disabled
or global disabled.
- Remove schedules plan from database and cancel waiting & running
schedules tasks in this repository when default branch changed.
2024-01-12 21:50:38 +00:00
Jack Hay
6c6823935c
Add tests for #28765 (#28773)
Adds tests to cover changes made in #28765
2024-01-12 17:15:42 +00:00
Exploding Dragon
ba4d0b8ffb
Support for grouping RPMs using paths (#26984)
The current rpm repository places all packages in the same repository,
and different systems (el7,f34) may hit packages that do not belong to
this distribution ( #25304 ) , which now supports grouping of rpm.

![图片](https://github.com/go-gitea/gitea/assets/33776693/d1e1d99f-7799-4b2b-a19b-cb2a5c692914)

Fixes #25304 .
Fixes #27056 .

Refactor: [#25866](https://github.com/go-gitea/gitea/pull/25866)
2024-01-12 03:16:05 +00:00
Mihir Joshi
669bbbaf24
Integration Test for Commit Search containing Square Brackets (#28751)
Integration test for #28744 

Change keywords commit search flag from `-F` to `--fixed-strings` for
readability
2024-01-11 11:04:45 +08:00
wxiaoguang
2df7563f31
Recommend/convert to use case-sensitive collation for MySQL/MSSQL (#28662)
Mainly for MySQL/MSSQL.

It is important for Gitea to use case-sensitive database charset
collation. If the database is using a case-insensitive collation, Gitea
will show startup error/warning messages, and show the errors/warnings
on the admin panel's Self-Check page.

Make `gitea doctor convert` work for MySQL to convert the collations of
database & tables & columns.

* Fix #28131

## ⚠️ BREAKING ⚠️

It is not quite breaking, but it's highly recommended to convert the
database&table&column to a consistent and case-sensitive collation.
2024-01-10 11:03:23 +00:00
wxiaoguang
9296c31ff7
Fix incorrect URL for "Reference in New Issue" (#28716)
Gitea prefers to use relative URLs in code (to make multiple domain work
for some users)

So it needs to use `toAbsoluteUrl` to generate a full URL when click
"Reference in New Issues"

And add some comments in the test code
2024-01-07 10:50:03 +00:00
wxiaoguang
c5901b622d
Avoid unnecessary 500 panic when a commit doesn't exist (#28719)
In #26851, it assumed that `Commit` always exists when
`PageIsDiff==true`.

But for a 404 page, the `Commit` doesn't exist, so the following code
would cause panic because nil value can't be passed as string parameter
to `IsMultilineCommitMessage(string)` (or the StringUtils.Cut in later
PRs)
2024-01-07 18:20:22 +08:00
Lunny Xiao
da58bb85fa
Upgrade xorm to new version which supported update join for all supported databases (#28590)
Fix https://github.com/go-gitea/gitea/pull/28547#issuecomment-1867740842

Since https://gitea.com/xorm/xorm/pulls/2383 merged, xorm now supports
UPDATE JOIN.
To keep consistent from different databases, xorm use
`engine.Join().Update`, but the actural generated SQL are different
between different databases.

For MySQL, it's `UPDATE talbe1 JOIN table2 ON join_conditions SET xxx
Where xxx`.

For MSSQL, it's `UPDATE table1 SET xxx FROM TABLE1, TABLE2 WHERE
join_conditions`.

For SQLITE per https://www.sqlite.org/lang_update.html, sqlite support
`UPDATE table1 SET xxx FROM table2 WHERE join conditions` from
3.33.0(2020-8-14).

POSTGRES is the same as SQLITE.
2023-12-31 05:00:35 +00:00
wxiaoguang
e743570f65
Refactor timeutil package (#28623)
1. make names more readable
2. remove unused FormatLong/FormatShort
3. use `FormatDate` instead of `Format "2006-01-02"`
2023-12-28 10:09:57 +00:00
Lunny Xiao
921df1cbad
Remove unnecessary syncbranchToDB with tests (#28624)
#28361 introduced `syncBranchToDB` in `CreateNewBranchFromCommit`. This
PR will revert the change because it's unnecessary. Every push will
already be checked by `syncBranchToDB`.
This PR also created a test to ensure it's right.
2023-12-28 15:28:57 +08:00
Lunny Xiao
4c29c75968
Fix session key conflict with database keyword (#28613)
This is a regression from #28220 .
`builder.Cond` will not add `` ` `` automatically but xorm method
`Get/Find` adds `` ` ``.

This PR also adds tests to prevent the method from being implemented
incorrectly. The tests are added in `integrations` to test every
database.
2023-12-27 15:24:23 +08:00
delvh
778ad795fd
Refactor deletion (#28610)
Introduce the new generic deletion methods
- `func DeleteByID[T any](ctx context.Context, id int64) (int64, error)`
- `func DeleteByIDs[T any](ctx context.Context, ids ...int64) error`
- `func Delete[T any](ctx context.Context, opts FindOptions) (int64,
error)`

So, we no longer need any specific deletion method and can just use
the generic ones instead.

Replacement of #28450

Closes #28450

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2023-12-25 21:25:29 +01:00
wxiaoguang
b41925cee3
Refactor CORS handler (#28587)
The CORS code has been unmaintained for long time, and the behavior is
not correct.

This PR tries to improve it. The key point is written as comment in
code. And add more tests.

Fix #28515
Fix #27642
Fix #17098
2023-12-25 20:13:18 +08:00
Kyle D
33439b733a
Disable query token param in integration tests (#28592)
Follow up to https://github.com/go-gitea/gitea/pull/28484, this PR
enables the setting for integration tests and migrates a few additional
test queries.
2023-12-23 11:29:51 +08:00
KN4CK3R
838db2f891
Convert to url auth to header auth in tests (#28484)
Related #28390
2023-12-21 23:59:59 +00:00
Lunny Xiao
408a484224
Adjust object format interface (#28469)
- Remove `ObjectFormatID`
- Remove function `ObjectFormatFromID`.
- Use `Sha1ObjectFormat` directly but not a pointer because it's an
empty struct.
- Store `ObjectFormatName` in `repository` struct
2023-12-17 11:56:08 +00:00
Adam Majer
cbf923e87b
Abstract hash function usage (#28138)
Refactor Hash interfaces and centralize hash function. This will allow
easier introduction of different hash function later on.

This forms the "no-op" part of the SHA256 enablement patch.
2023-12-13 21:02:00 +00:00
Lunny Xiao
717d0f5934
Do some missing checks (#28423) 2023-12-12 05:01:17 +00:00
Lunny Xiao
aeb383025f
Also sync DB branches on push if necessary (#28361)
Fix #28056 

This PR will check whether the repo has zero branch when pushing a
branch. If that, it means this repository hasn't been synced.

The reason caused that is after user upgrade from v1.20 -> v1.21, he
just push branches without visit the repository user interface. Because
all repositories routers will check whether a branches sync is necessary
but push has not such check.

For every repository, it has two states, synced or not synced. If there
is zero branch for a repository, then it will be assumed as non-sync
state. Otherwise, it's synced state. So if we think it's synced, we just
need to update branch/insert new branch. Otherwise do a full sync. So
that, for every push, there will be almost no extra load added. It's
high performance than yours.

For the implementation, we in fact will try to update the branch first,
if updated success with affect records > 0, then all are done. Because
that means the branch has been in the database. If no record is
affected, that means the branch does not exist in database. So there are
two possibilities. One is this is a new branch, then we just need to
insert the record. Another is the branches haven't been synced, then we
need to sync all the branches into database.
2023-12-09 13:30:56 +00:00
Lunny Xiao
dd30d9d5c0
Remove GetByBean method because sometimes it's danger when query condition parameter is zero and also introduce new generic methods (#28220)
The function `GetByBean` has an obvious defect that when the fields are
empty values, it will be ignored. Then users will get a wrong result
which is possibly used to make a security problem.

To avoid the possibility, this PR removed function `GetByBean` and all
references.
And some new generic functions have been introduced to be used.

The recommand usage like below.

```go
// if query an object according id
obj, err := db.GetByID[Object](ctx, id)
// query with other conditions
obj, err := db.Get[Object](ctx, builder.Eq{"a": a, "b":b})
```
2023-12-07 15:27:36 +08:00
KN4CK3R
a95d5b7702
Add HEAD support for rpm repo files (#28309)
Fixes https://codeberg.org/forgejo/forgejo/issues/1810

zypper uses HEAD requests to check file existence.

https://github.com/openSUSE/libzypp/blob/HEAD/zypp/RepoManager.cc#L2549

https://github.com/openSUSE/libzypp/blob/HEAD/zypp-curl/ng/network/private/downloaderstates/basicdownloader_p.cc#L116

@ExplodingDragon fyi
2023-12-05 08:01:02 +00:00
Lunny Xiao
882e502327
Fix comment permissions (#28213)
This PR will fix some missed checks for private repositories' data on
web routes and API routes.
2023-11-25 17:21:21 +00:00
Lunny Xiao
df1e7d0067
Use db.Find instead of writing methods for every object (#28084)
For those simple objects, it's unnecessary to write the find and count
methods again and again.
2023-11-24 03:49:41 +00:00
Denys Konovalov
816e46ee7c
add skip ci functionality (#28075)
Adds the possibility to skip workflow execution if the commit message
contains a string like [skip ci] or similar.

The default strings are the same as on GitHub, users can also set custom
ones in app.ini

Reference:
https://docs.github.com/en/actions/managing-workflow-runs/skipping-workflow-runs

Close #28020
2023-11-18 13:37:08 +02:00
Earl Warren
340055ab6c
Enable system users search via the API (#28013)
Refs: https://codeberg.org/forgejo/forgejo/issues/1403

(cherry picked from commit dd4d17c159eaf8b642aa9e6105b0532e25972bb7)
2023-11-13 15:31:38 +01:00
Earl Warren
f2ea31de36
Enable system users for comment.LoadPoster (#28014)
System users (Ghost, ActionsUser, etc) have a negative id and may be the
author of a comment, either because it was created by a now deleted user
or via an action using a transient token.

The GetPossibleUserByID function has special cases related to system
users and will not fail if given a negative id.

Refs: https://codeberg.org/forgejo/forgejo/issues/1425 

(cherry picked from commit 6a2d2fa24390116d31ae2507c0a93d423f690b7b)
2023-11-13 15:30:08 +01:00