Commit graph

3659 commits

Author SHA1 Message Date
zeripath
d0c74dd2d2
Prepend refs/heads/ to issue template refs (#20461) (#22427)
Backport #20461

Signed-off-by: Andrew Thornton <art27@cantab.net>
2023-01-13 16:33:35 -06:00
zeripath
3ad62127df
Correctly handle select on multiple channels in Queues (#22146) (#22428)
Backport #22146

There are a few places in FlushQueueWithContext which make an incorrect
assumption about how `select` on multiple channels works.

The problem is best expressed by looking at the following example:

```go
package main

import "fmt"

func main() {
    closedChan := make(chan struct{})
    close(closedChan)
    toClose := make(chan struct{})
    count := 0

    for {
        select {
        case <-closedChan:
            count++
            fmt.Println(count)
            if count == 2 {
                close(toClose)
            }
        case <-toClose:
            return
        }
    }
}
```

This PR double-checks that the contexts are closed outside of checking
if there is data in the dataChan. It also rationalises the WorkerPool
FlushWithContext because the previous implementation failed to handle
pausing correctly. This will probably fix the underlying problem in
 #22145

Fix #22145

Signed-off-by: Andrew Thornton <art27@cantab.net>
2023-01-13 20:42:42 +00:00
Lunny Xiao
426c0ad14c
Allow HOST has no port (#22280) (#22409)
Fix #22274
Backport #22280 

This PR will allow `HOST` without port. Then a default port will be
given in future steps.
2023-01-12 09:57:03 +08:00
Lunny Xiao
32999e2511
Don't lookup mail server when using sendmail (#22300) (#22383)
Fix #22287
backport #22300
2023-01-09 12:18:03 -05:00
isla w
adc0bcaebb
Update Emoji dataset to Unicode 14 (#22342) (#22343)
Backport of #22342 to release/v1.18 as requested
2023-01-04 12:45:18 -06:00
Jason Song
09c667eb45
Fix sitemap (#22272) (#22320)
Backport #22272.

Fix #22270.

Related to #18407.

The old code treated both sitemap and sitemap index as the format like:

```xml
...
<url>
  <loc>http://localhost:3000/explore/users/sitemap-1.xml</loc>
</url>
...
```

Actually, it's incorrect for sitemap index, it should be:

```xml
...
<sitemap>
  <loc>http://localhost:3000/explore/users/sitemap-1.xml</loc>
</sitemap>
...
```

See https://www.sitemaps.org/protocol.html

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2023-01-03 22:03:56 +08:00
Lunny Xiao
791f290c26
Display error log when a modified template has an error so that it could recovery when the error fixed (#22261) (#22321)
backport #22261 

A drawback is the previous generated template has been cached, so you
cannot get error in the UI but only from log

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: delvh <dev.lh@web.de>
2023-01-03 19:39:58 +08:00
Lunny Xiao
0697075547
Fix get system setting bug when enabled redis cache (#22298)
backport #22295, fix #22281

Co-authored-by: Lauris BH <lauris@nix.lv>
2023-01-01 23:24:01 +08:00
Lunny Xiao
f1e07d8c87
Fix bug of DisableGravatar default value (#22297)
backport #22296

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
2023-01-01 20:20:04 +08:00
Chongyi Zheng
443fd27a90
Add sync_on_commit option for push mirrors api (#22271) (#22292)
Backport of #22271
2022-12-31 19:46:14 +08:00
Lunny Xiao
4fdd4fb2c4
Add more test directory to exclude dir of air, remove watching templates from air include dir because gitea has internal mechanism (#22246) (#22247)
backport #22246 

Since #20218 introduced internal watching template, template watching
should be removed from `air`. This will prevent restart the whole server
once the template files changed to speed up developing when using `make
watch`.

To ensure `make watch` will reuse template watching, this PR introduced
a new ENV `GITEA_RUN_MODE` to make sure `make watch` will always run in
a dev mode of Gitea so that template watching will open.

This PR also added more exclude testdata directories.

Co-authored-by: 6543 <6543@obermui.de>
2022-12-29 16:12:10 +01:00
Lunny Xiao
900e158064
refactor auth interface to return error when verify failure (#22119) (#22259)
backport #22119

This PR changed the Auth interface signature from `Verify(http
*http.Request, w http.ResponseWriter, store DataStore, sess
SessionStore) *user_model.User`
to 
`Verify(http *http.Request, w http.ResponseWriter, store DataStore, sess
SessionStore) (*user_model.User, error)`.

There is a new return argument `error` which means the verification
condition matched but verify process failed, we should stop the auth
process.

Before this PR, when return a `nil` user, we don't know the reason why
it returned `nil`. If the match condition is not satisfied or it
verified failure? For these two different results, we should have
different handler. If the match condition is not satisfied, we should
try next auth method and if there is no more auth method, it's an
anonymous user. If the condition matched but verify failed, the auth
process should be stop and return immediately.

This will fix #20563

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: Jason Song <i@wolfogre.com>
2022-12-29 13:50:09 +08:00
Jason Song
e9bc2c77c3
Use complete SHA to create and query commit status (#22244) (#22257)
Backport #22244.

Fix #13485.

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-12-28 11:03:21 +01:00
zeripath
198342efe4
Add setting to disable the git apply step in test patch (#22130) (#22170)
Backport #22130

For a long time Gitea has tested PR patches using a git apply --check
method, and in fact prior to the introduction of a read-tree assisted
three-way merge in #18004, this was the only way of checking patches.

Since #18004, the git apply --check method has been a fallback method,
only used when the read-tree three-way merge method has detected a
conflict. The read-tree assisted three-way merge method is much faster
and less resource intensive method of detecting conflicts. #18004 kept
the git apply method around because it was thought possible that this
fallback might be able to rectify conflicts that the read-tree three-way
merge detected. I am not certain if this could ever be the case.

Given the uncertainty here and the now relative stability of the
read-tree method - this PR makes using this fallback optional but
enables it by default. A `log.Critical` has been added which will alert
if the `git apply --check` method was successful at checking a PR that
`read-tree` failed on.

The hope is that none of these log.Critical messages will be found and
there will be no significant difference in conflict detection. Thus we
will be able to remove the git apply fallback in future, and/or improve
the read-tree three-way merge method to catch any conflicts that git
apply method might have been able to fix.

An additional benefit for anyone who disables the check method is that
patch checking should be significantly less resource intensive and much
quicker.

(See
https://github.com/go-gitea/gitea/issues/22083\#issuecomment-1347961737)

Ref #22083

Signed-off-by: Andrew Thornton <art27@cantab.net>

<!--

Please check the following:

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Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
2022-12-22 11:59:10 +01:00
KN4CK3R
f7258aa42b
Normalize NuGet package version on upload (#22186) (#22200)
Backport of #22186

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-12-21 14:50:17 -06:00
Gusted
145e11bc39
Check for zero time instant in TimeStamp.IsZero() (#22171) (#22172)
- Backport of #22171
- Currently, the 'IsZero' function for 'TimeStamp' just checks if the
unix time is zero, which is not the behavior of 'Time.IsZero()', but
Gitea is using this method in accordance with the behavior of
'Time.IsZero()'.
  - Adds a new condition to check for the zero time instant.
- Fixes a bug where non-expiring GPG keys where shown as they expired on
Jan 01, 0001.
  - Related https://codeberg.org/Codeberg/Community/issues/791
2022-12-20 10:04:46 +08:00
zeripath
72524adf3f
Ensure that plain files are rendered correctly even when containing ambiguous characters (#22017) (#22160)
Backport #22017

As recognised in #21841 the rendering of plain text files is somewhat
incorrect when there are ambiguous characters as the html code is double
escaped. In fact there are several more problems here.

We have a residual isRenderedHTML which is actually simply escaping the
file - not rendering it. This is badly named and gives the wrong
impression.

There is also unusual behaviour whether the file is called a Readme or
not and there is no way to get to the source code if the file is called
README.

In reality what should happen is different depending on whether the file
is being rendered a README at the bottom of the directory view or not.

1. If it is rendered as a README on a directory - it should simply be
escaped and rendered as `<pre>` text.
2. If it is rendered as a file then it should be rendered as source
code.

This PR therefore does:
1. Rename IsRenderedHTML to IsPlainText
2. Readme files rendered at the bottom of the directory are rendered
without line numbers
3. Otherwise plain text files are rendered as source code.

Replace #21841

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-12-19 23:51:21 +08:00
zeripath
56bded9d8d
Local storage should not store files as executable (#22162) (#22163)
Backport #22162

The PR #21198 introduced a probable security vulnerability which
resulted in making all storage files be marked as executable.

This PR ensures that these are forcibly marked as non-executable.

Fix #22161

Signed-off-by: Andrew Thornton <art27@cantab.net>

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-12-19 01:12:25 +02:00
zeripath
194b780cd7
Make gitea work using cmd.exe again (#22073) (#22133)
Backport #22073

Gitea will attempt to lookup its location using LookPath however, this
fails on cmd.exe if gitea is in the current working directory.

exec.LookPath will return an exec.ErrDot error which we can test for and
then simply using filepath.Abs(os.Args[0]) to absolute gitea against the
current working directory.

Fix #22063

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-12-14 07:13:16 -06:00
KN4CK3R
b54c064f89
Workaround for container registry push/pull errors (#21862) (#22068)
Backport of #21862

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-12-10 02:11:46 +02:00
zeripath
e39bb2d05a
Handle empty author names (#21902) (#22027)
Backport #21902

Although git does expect that author names should be of the form: `NAME
<EMAIL>` some users have been able to create commits with: `<EMAIL>`

Fix #21900

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-12-06 21:16:47 +08:00
zeripath
35fc9ad984
Use GhostUser if needed for TrackedTimes (#22021) (#22029)
Backport #22021

When getting tracked times out of the db and loading their attributes
handle not exist errors in a nicer way. (Also prevent an NPE.)

Fix #22006

Signed-off-by: Andrew Thornton <art27@cantab.net>

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-12-05 14:20:37 +02:00
zeripath
6e4ba04843
Ensure that Chinese punctuation is not ambiguous when locale is Chinese (#22019) (#22030)
Backport #22019

Although there are per-locale fallbacks for ambiguity the locale names
for Chinese do not quite match our locales. This PR simply maps zh-CN on
to zh-hans and other zh variants on to zh-hant.

Ref #20999

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
2022-12-05 17:20:38 +08:00
6543
9819a47717
On tag/branch-exist check, dont panic if repo is nil (#21787) (#21788)
backport #21787
2022-12-04 10:29:19 +00:00
zeripath
c7770fa502
Use path not filepath in template filenames (#21993) (#22022)
Backport #21993

Paths in git are always separated by `/` not `\` - therefore we should
`path` and not `filepath`

Fix #21987

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Lauris BH <lauris@nix.lv>
2022-12-04 13:58:58 +08:00
zeripath
888384a631
Correct the fallbacks for mailer configuration (#21945) (#21953)
Backport #21945

Unfortunately the fallback configuration code for [mailer] that were
added in #18982 are incorrect. When you read a value from an ini section
that key is added. This leads to a failure of the fallback mechanism.
Further there is also a spelling mistake in the startTLS configuration.

This PR restructures the mailer code to first map the deprecated
settings on to the new ones - and then use ini.MapTo to map those on to
the struct with additional validation as necessary.

Ref #21744

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-11-27 19:45:59 +00:00
KN4CK3R
ff4e292b3f
Add support for HEAD requests in Maven registry (#21834) (#21929)
Backport of #21834

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-11-25 13:46:28 +02:00
Xinyu Zhou
c844c4ff88
Fix vertical align of committer avatar rendered by email address (#21884) (#21918)
Backport #21884

Committer avatar rendered by `func AvatarByEmail` are not vertical align
as `func Avatar` does.

- Replace literals `ui avatar` and `ui avatar vm` with the constant
`DefaultAvatarClass`

Signed-off-by: Xinyu Zhou <i@sourcehut.net>
2022-11-24 10:52:20 +08:00
KN4CK3R
f4ec03a4e5
Fix setting HTTP headers after write (#21833) (#21877)
Backport of #21833

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2022-11-22 09:00:42 +08:00
Jason Song
7a004ad7eb
Support comma-delimited string as labels in issue template (#21831) (#21873)
Backport #21831.

The [labels in issue YAML templates](https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-issue-forms#top-level-syntax)
can be a string array or a comma-delimited string, so a single string
should be valid labels.

The old codes committed in #20987 ignore this, that's why the warning is
displayed:

<img width="618" alt="image" src="https://user-images.githubusercontent.com/9418365/202112642-93dc72d0-71c3-40a2-9720-30fc2d48c97c.png">

Fixes #17877.
2022-11-20 10:44:20 +00:00
Gusted
af8b2250c4
Prevent dangling user redirects (#21856) (#21858)
- Backport #21856
- It's possible that the `user_redirect` table contains a user id that
no longer exists.
  - Delete a user redirect upon deleting the user.
- Add a check for these dangling user redirects to check-db-consistency.
2022-11-18 22:25:00 +08:00
Jason Song
8917af8701
Ignore issue template with a special name (#21830) (#21835)
Backport #21830.

A file in `ISSUE_TEMPLATE` with the name `config.yml` shouldn't be
treated as a YAML template, it's for [configuring the template
chooser](https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository#configuring-the-template-chooser).

The old code tried to ignore the file, but it didn't work, caused by
#20987. That's why the warning is displayed:

<img width="415" alt="image"

src="https://user-images.githubusercontent.com/9418365/202094067-804c42fe-0e9e-4fc5-bf01-d95fa336f54f.png">

Note that this PR is not an implementation of `config.yml`, there will
be another one to do it.
2022-11-16 14:48:33 -05:00
zeripath
0d25292fbc
Prevent panic in doctor command when running default checks (#21791) (#21807)
Backport #21791

There was a bug introduced in #21352 due to a change of behaviour caused
by #19280. This causes a panic on running the default doctor checks
because the panic introduced by #19280 assumes that the only way
opts.StdOut and opts.Stderr can be set in RunOpts is deliberately.
Unfortunately, when running a git.Command the provided RunOpts can be
set, therefore if you share a common set of RunOpts these two values can
be set by the previous commands.

This PR stops using common RunOpts for the commands in that doctor check
but secondly stops RunCommand variants from changing the provided
RunOpts.

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-11-14 10:58:32 +08:00
Lunny Xiao
b9dcf991b9
Fix dashboard ignored system setting cache (#21621) (#21759)
backport #21621

This is a performance regression from #18058

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Andrew Thornton <art27@cantab.net>
2022-11-10 19:41:44 +08:00
wxiaoguang
89d52922d0
Fix token generation when using INTERNAL_TOKEN_URI (#21669) (#21670)
Backport #21669

Fix https://github.com/go-gitea/gitea/issues/21666
Caused by https://github.com/go-gitea/gitea/pull/19663

Before: when install, the INTERNAL_TOKEN was always generated and saved.
But the internal token may be already there by INTERNAL_TOKEN_URI

After: INTERNAL_TOKEN_URI file must be non-empty. When install, skip
internal token generation if the token exists.
2022-11-03 20:54:25 +00:00
Jason Song
7a8e34b255
Deal with markdown template without metadata (#21639) (#21654)
Backport #21639 .

Fixed #21636.

Related to #20987.

A markdown template without metadata should not be treated as an invalid
template.

And this PR fixed another bug that non-template files(neither .md nor
.yaml) are treated as yaml files.

<img width="504" alt="image"

src="https://user-images.githubusercontent.com/9418365/198968668-40082fa1-4f25-4d3e-9b73-1dbf6d1a7521.png">
2022-11-01 23:41:31 +08:00
Jason Song
e4a10f8c78
Sync git hooks when config file path changed (#21619) (#21626)
Backport #21619 .

A patch to #17335.

Just like AppPath, Gitea writes its own CustomConf into git hook scripts
too. If Gitea's CustomConf changes, then the git push may fail.

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: zeripath <art27@cantab.net>
2022-10-30 11:17:11 +08:00
KN4CK3R
4d39fd8aae
Fix Timestamp.IsZero (#21593) (#21603)
Backport of #21593

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-10-27 16:47:06 +08:00
wxiaoguang
4869f9c3c8
Revert: auto generate INTERNAL_TOKEN (#21608) (#21609)
Backport #21608

Follow #19663

Some users do cluster deployment, they still depend on this
auto-generating behavior.
2022-10-27 11:17:47 +08:00
delvh
0ebb45cfe7
Replace all instances of fmt.Errorf(%v) with fmt.Errorf(%w) (#21551)
Found using
`find . -type f -name '*.go' -print -exec vim {} -c
':%s/fmt\.Errorf(\(.*\)%v\(.*\)err/fmt.Errorf(\1%w\2err/g' -c ':wq' \;`

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2022-10-24 20:29:17 +01:00
KN4CK3R
7c11a73833
Fix package access for admins and inactive users (#21580)
I noticed an admin is not allowed to upload packages for other users
because `ctx.IsSigned` was not set.
I added a check for `user.IsActive` and `user.ProhibitLogin` too because
both was not checked. Tests enforce this now.

Co-authored-by: Lauris BH <lauris@nix.lv>
2022-10-24 22:23:25 +03:00
M Hickford
191a74d622
Record OAuth client type at registration (#21316)
The OAuth spec [defines two types of
client](https://datatracker.ietf.org/doc/html/rfc6749#section-2.1),
confidential and public. Previously Gitea assumed all clients to be
confidential.

> OAuth defines two client types, based on their ability to authenticate
securely with the authorization server (i.e., ability to
>   maintain the confidentiality of their client credentials):
>
>   confidential
> Clients capable of maintaining the confidentiality of their
credentials (e.g., client implemented on a secure server with
> restricted access to the client credentials), or capable of secure
client authentication using other means.
>
>   **public
> Clients incapable of maintaining the confidentiality of their
credentials (e.g., clients executing on the device used by the resource
owner, such as an installed native application or a web browser-based
application), and incapable of secure client authentication via any
other means.**
>
> The client type designation is based on the authorization server's
definition of secure authentication and its acceptable exposure levels
of client credentials. The authorization server SHOULD NOT make
assumptions about the client type.

 https://datatracker.ietf.org/doc/html/rfc8252#section-8.4

> Authorization servers MUST record the client type in the client
registration details in order to identify and process requests
accordingly.

Require PKCE for public clients:
https://datatracker.ietf.org/doc/html/rfc8252#section-8.1

> Authorization servers SHOULD reject authorization requests from native
apps that don't use PKCE by returning an error message

Fixes #21299

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-10-24 15:59:24 +08:00
wxiaoguang
dcd9fc7ee8
Refactor git command arguments and make all arguments to be safe to be used (#21535)
Follow #21464

Make all git command arguments strictly safe. Most changes are one-to-one replacing, keep all existing logic.
2022-10-23 22:44:45 +08:00
Yarden Shoham
63ebb53fd5
Add link to user profile in markdown mention only if user exists (#21533)
Previously mentioning a user would link to its profile, regardless of
whether the user existed. This change tests if the user exists and only
if it does - a link to its profile is added.

* Fixes #3444

Signed-off-by: Yarden Shoham <hrsi88@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-10-23 01:15:52 +08:00
Yarden Shoham
2c77d4b195
Remove unnecessary debug log (#21536)
It distractingly shows up on unit tests

* Looks like a leftover from #20571

Signed-off-by: Yarden Shoham <hrsi88@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-10-22 15:25:34 +08:00
KN4CK3R
1887c95254
Decouple HookTask from Repository (#17940)
At the moment a repository reference is needed for webhooks. With the
upcoming package PR we need to send webhooks without a repository
reference. For example a package is uploaded to an organization. In
theory this enables the usage of webhooks for future user actions.

This PR removes the repository id from `HookTask` and changes how the
hooks are processed (see `services/webhook/deliver.go`). In a follow up
PR I want to remove the usage of the `UniqueQueue´ and replace it with a
normal queue because there is no reason to be unique.

Co-authored-by: 6543 <6543@obermui.de>
2022-10-21 18:21:56 +02:00
Yarden Shoham
e828564445
Add color previews in markdown (#21474)
* Resolves #3047

Every time a color code will be in \`backticks`, a cute little color
preview will pop up


[Inspiration](https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#supported-color-models)

#### Before

![image](https://user-images.githubusercontent.com/20454870/196631524-298afbbf-d2c8-4018-92a5-0393a693d850.png)

#### After

![image](https://user-images.githubusercontent.com/20454870/196631397-36c561e4-08f5-465a-a36e-76084e30b08a.png)

Signed-off-by: Yarden Shoham <hrsi88@gmail.com>
Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2022-10-21 20:00:53 +08:00
Lunny Xiao
16cbd5b59c
Fix generating compare link (#21519)
Fix #6318

Co-authored-by: zeripath <art27@cantab.net>
2022-10-21 16:39:26 +08:00
wxiaoguang
0614ae1c44
Remove unnecessary misspell ignore pattern (#21475)
It doesn't make sense to ignore the pattern again and again.
2022-10-18 12:52:25 -04:00
zeripath
716fcfcf72
Make every not exist error unwrappable to a fs.ErrNotExist (#20891)
A lot of our code is repeatedly testing if individual errors are
specific types of Not Exist errors. This is repetitative and unnecesary.
`Unwrap() error` provides a common way of labelling an error as a
NotExist error and we can/should use this.

This PR has chosen to use the common `io/fs` errors e.g.
`fs.ErrNotExist` for our errors. This is in some ways not completely
correct as these are not filesystem errors but it seems like a
reasonable thing to do and would allow us to simplify a lot of our code
to `errors.Is(err, fs.ErrNotExist)` instead of
`package.IsErr...NotExist(err)`

I am open to suggestions to use a different base error - perhaps
`models/db.ErrNotExist` if that would be felt to be better.


Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: delvh <dev.lh@web.de>
2022-10-18 07:50:37 +02:00