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[GITEA] Use restricted sanitizer for repository description

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- Currently the repository description uses the same sanitizer as a
normal markdown document. This means that element such as heading and
images are allowed and can be abused.
- Create a minimal restricted sanitizer for the repository description,
which only allows what the postprocessor currently allows, which are
links and emojis.
- Added unit testing.
- Resolves https://codeberg.org/forgejo/forgejo/issues/1202
- Resolves https://codeberg.org/Codeberg/Community/issues/1122

(cherry picked from commit a8afa4cd18)
(cherry picked from commit 0238587c51)
(cherry picked from commit a8c7bbf728)
(cherry picked from commit 80e05a8245)
(cherry picked from commit f5af5050b3)
(cherry picked from commit 608f981e55)
(cherry picked from commit f40cff9263)
(cherry picked from commit 5f113bb611)
This commit is contained in:
Gusted 2023-09-13 12:04:10 +02:00 • committed by Earl Warren
commit 7798a3d746
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3 changed files with 56 additions and 5 deletions
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4
models/repo/repo.go
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@ -584,9 +584,9 @@ func (repo *Repository) DescriptionHTML(ctx context.Context) template.HTML {
}, repo.Description)
if err != nil {
log.Error("Failed to render description for %s (ID: %d): %v", repo.Name, repo.ID, err)
return template.HTML(markup.Sanitize(repo.Description))
return template.HTML(markup.SanitizeDescription(repo.Description))
}
return template.HTML(markup.Sanitize(desc))
return template.HTML(markup.SanitizeDescription(desc))
}
// CloneLink represents different types of clone URLs of repository.