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Rework markup link rendering (#26745) (#28803)

Backport #26745
Fixes #26548

This PR refactors the rendering of markup links. The old code uses
`strings.Replace` to change some urls while the new code uses more
context to decide which link should be generated.

The added tests should ensure the same output for the old and new
behaviour (besides the bug).

We may need to refactor the rendering a bit more to make it clear how
the different helper methods render the input string. There are lots of
options (resolve links / images / mentions / git hashes / emojis / ...)
but you don't really know what helper uses which options. For example,
we currently support images in the user description which should not be
allowed I think:

<details>
  <summary>Profile</summary>

https://try.gitea.io/KN4CK3R

![grafik](109ae422-496d-4200-b52e-b3a528f553e5)

</details>

(cherry picked from commit 022552d5b6)
This commit is contained in:
KN4CK3R 2024-01-16 03:13:29 +01:00 committed by Earl Warren
parent 5124be72aa
commit 875b398e5e
No known key found for this signature in database
GPG key ID: 0579CB2928A78A00
42 changed files with 966 additions and 388 deletions

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@ -6,17 +6,64 @@ package templates
import (
"context"
"html/template"
"os"
"testing"
"code.gitea.io/gitea/models/unittest"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup"
"github.com/stretchr/testify/assert"
)
const testInput = ` space @mention-user
/just/a/path.bin
https://example.com/file.bin
[local link](file.bin)
[remote link](https://example.com)
[[local link|file.bin]]
[[remote link|https://example.com]]
![local image](image.jpg)
![remote image](https://example.com/image.jpg)
[[local image|image.jpg]]
[[remote link|https://example.com/image.jpg]]
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare
https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit
:+1:
mail@domain.com
@mention-user test
#123
space
`
var testMetas = map[string]string{
"user": "user13",
"repo": "repo11",
"repoPath": "../../tests/gitea-repositories-meta/user13/repo11.git/",
"mode": "comment",
}
func TestMain(m *testing.M) {
unittest.InitSettings()
if err := git.InitSimple(context.Background()); err != nil {
log.Fatal("git init failed, err: %v", err)
}
markup.Init(&markup.ProcessorHelper{
IsUsernameMentionable: func(ctx context.Context, username string) bool {
return username == "mention-user"
},
})
os.Exit(m.Run())
}
func TestRenderCommitBody(t *testing.T) {
type args struct {
ctx context.Context
msg string
urlPrefix string
metas map[string]string
ctx context.Context
msg string
metas map[string]string
}
tests := []struct {
name string
@ -50,7 +97,91 @@ func TestRenderCommitBody(t *testing.T) {
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
assert.Equalf(t, tt.want, RenderCommitBody(tt.args.ctx, tt.args.msg, tt.args.urlPrefix, tt.args.metas), "RenderCommitBody(%v, %v, %v, %v)", tt.args.ctx, tt.args.msg, tt.args.urlPrefix, tt.args.metas)
assert.Equalf(t, tt.want, RenderCommitBody(tt.args.ctx, tt.args.msg, tt.args.metas), "RenderCommitBody(%v, %v, %v)", tt.args.ctx, tt.args.msg, tt.args.metas)
})
}
expected := `/just/a/path.bin
<a href="https://example.com/file.bin" class="link">https://example.com/file.bin</a>
[local link](file.bin)
[remote link](<a href="https://example.com" class="link">https://example.com</a>)
[[local link|file.bin]]
[[remote link|<a href="https://example.com" class="link">https://example.com</a>]]
![local image](image.jpg)
![remote image](<a href="https://example.com/image.jpg" class="link">https://example.com/image.jpg</a>)
[[local image|image.jpg]]
[[remote link|<a href="https://example.com/image.jpg" class="link">https://example.com/image.jpg</a>]]
<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" class="compare"><code class="nohighlight">88fc37a3c0...12fc37a3c0 (hash)</code></a>
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare
<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" class="commit"><code class="nohighlight">88fc37a3c0</code></a>
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit
<span class="emoji" aria-label="thumbs up">👍</span>
<a href="mailto:mail@domain.com" class="mailto">mail@domain.com</a>
<a href="http://localhost:3000/mention-user" class="mention">@mention-user</a> test
<a href="http://localhost:3000/user13/repo11/issues/123" class="ref-issue">#123</a>
space`
assert.EqualValues(t, expected, RenderCommitBody(context.Background(), testInput, testMetas))
}
func TestRenderCommitMessage(t *testing.T) {
expected := `space <a href="http://localhost:3000/mention-user" class="mention">@mention-user</a> `
assert.EqualValues(t, expected, RenderCommitMessage(context.Background(), testInput, testMetas))
}
func TestRenderCommitMessageLinkSubject(t *testing.T) {
expected := `<a href="https://example.com/link" class="default-link muted">space </a><a href="http://localhost:3000/mention-user" class="mention">@mention-user</a>`
assert.EqualValues(t, expected, RenderCommitMessageLinkSubject(context.Background(), testInput, "https://example.com/link", testMetas))
}
func TestRenderIssueTitle(t *testing.T) {
expected := ` space @mention-user
/just/a/path.bin
https://example.com/file.bin
[local link](file.bin)
[remote link](https://example.com)
[[local link|file.bin]]
[[remote link|https://example.com]]
![local image](image.jpg)
![remote image](https://example.com/image.jpg)
[[local image|image.jpg]]
[[remote link|https://example.com/image.jpg]]
https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare
https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit
<span class="emoji" aria-label="thumbs up">👍</span>
mail@domain.com
@mention-user test
<a href="http://localhost:3000/user13/repo11/issues/123" class="ref-issue">#123</a>
space
`
assert.EqualValues(t, expected, RenderIssueTitle(context.Background(), testInput, testMetas))
}
func TestRenderMarkdownToHtml(t *testing.T) {
expected := `<p>space <a href="http://localhost:3000/mention-user" rel="nofollow">@mention-user</a><br/>
/just/a/path.bin
<a href="https://example.com/file.bin" rel="nofollow">https://example.com/file.bin</a>
<a href="/file.bin" rel="nofollow">local link</a>
<a href="https://example.com" rel="nofollow">remote link</a>
<a href="/src/file.bin" rel="nofollow">local link</a>
<a href="https://example.com" rel="nofollow">remote link</a>
<a href="/image.jpg" target="_blank" rel="nofollow noopener"><img src="/image.jpg" alt="local image"/></a>
<a href="https://example.com/image.jpg" target="_blank" rel="nofollow noopener"><img src="https://example.com/image.jpg" alt="remote image"/></a>
<a href="/image.jpg" rel="nofollow"><img src="/image.jpg" title="local image" alt="local image"/></a>
<a href="https://example.com/image.jpg" rel="nofollow"><img src="https://example.com/image.jpg" title="remote link" alt="remote link"/></a>
<a href="https://example.com/user/repo/compare/88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb#hash" rel="nofollow"><code>88fc37a3c0...12fc37a3c0 (hash)</code></a>
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb...12fc37a3c0a4dda553bdcfc80c178a58247f42fb pare
<a href="https://example.com/user/repo/commit/88fc37a3c0a4dda553bdcfc80c178a58247f42fb" rel="nofollow"><code>88fc37a3c0</code></a>
com 88fc37a3c0a4dda553bdcfc80c178a58247f42fb mit
<span class="emoji" aria-label="thumbs up">👍</span>
<a href="mailto:mail@domain.com" rel="nofollow">mail@domain.com</a>
<a href="http://localhost:3000/mention-user" rel="nofollow">@mention-user</a> test
#123
space</p>
`
assert.EqualValues(t, expected, RenderMarkdownToHtml(context.Background(), testInput))
}