Attachments: Add extension support, allow all types for releases (#12465)

* Attachments: Add extension support, allow all types for releases

- Add support for file extensions, matching the `accept` attribute of `<input type="file">`
- Add support for type wildcard mime types, e.g. `image/*`
- Create repository.release.ALLOWED_TYPES setting (default unrestricted)
- Change default for attachment.ALLOWED_TYPES to a list of extensions
- Split out POST /attachments into two endpoints for issue/pr and
  releases to prevent circumvention of allowed types check

Fixes: https://github.com/go-gitea/gitea/pull/10172
Fixes: https://github.com/go-gitea/gitea/issues/7266
Fixes: https://github.com/go-gitea/gitea/pull/12460
Ref: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#Unique_file_type_specifiers

* rename function

* extract GET routes out of RepoMustNotBeArchived

Co-authored-by: Lauris BH <lauris@nix.lv>

1 files changed, 15 insertions, 4 deletions

diff --git a/docs/content/doc/advanced/config-cheat-sheet.en-us.md b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
index fbf7affeaf..dc3979a64d 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
@@ -101,6 +101,18 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
 
 - `LOCK_REASONS`: **Too heated,Off-topic,Resolved,Spam**: A list of reasons why a Pull Request or Issue can be locked
 
+### Repository - Upload (`repository.upload`)
+
+- `ENABLED`: **true**: Whether repository file uploads are enabled
+- `TEMP_PATH`: **data/tmp/uploads**: Path for uploads (tmp gets deleted on gitea restart)
+- `ALLOWED_TYPES`: **\<empty\>**: Comma-separated list of allowed file extensions (`.zip`), mime types (`text/plain`) or wildcard type (`image/*`, `audio/*`, `video/*`). Empty value or `*/*` allows all types.
+- `FILE_MAX_SIZE`: **3**: Max size of each file in megabytes.
+- `MAX_FILES`: **5**: Max number of files per upload
+
+### Repository - Release (`repository.release`)
+
+- `ALLOWED_TYPES`: **\<empty\>**: Comma-separated list of allowed file extensions (`.zip`), mime types (`text/plain`) or wildcard type (`image/*`, `audio/*`, `video/*`). Empty value or `*/*` allows all types.
+
 ### Repository - Signing (`repository.signing`)
 
 - `SIGNING_KEY`: **default**: \[none, KEYID, default \]: Key to sign with.
@@ -560,11 +572,10 @@ Default templates for project boards:
 - `PROJECT_BOARD_BASIC_KANBAN_TYPE`: **To Do, In Progress, Done**
 - `PROJECT_BOARD_BUG_TRIAGE_TYPE`: **Needs Triage, High Priority, Low Priority, Closed**
 
-## Attachment (`attachment`)
+## Issue and pull request attachments (`attachment`)
 
-- `ENABLED`: **true**: Enable this to allow uploading attachments.
-- `ALLOWED_TYPES`: **see app.example.ini**: Allowed MIME types, e.g. `image/jpeg|image/png`.
-   Use `*/*` for all types.
+- `ENABLED`: **true**: Whether issue and pull request attachments are enabled.
+- `ALLOWED_TYPES`: **.docx,.gif,.gz,.jpeg,.jpg,.log,.pdf,.png,.pptx,.txt,.xlsx,.zip**: Comma-separated list of allowed file extensions (`.zip`), mime types (`text/plain`) or wildcard type (`image/*`, `audio/*`, `video/*`). Empty value or `*/*` allows all types.
 - `MAX_SIZE`: **4**: Maximum size (MB).
 - `MAX_FILES`: **5**: Maximum number of attachments that can be uploaded at once.
 - `STORAGE_TYPE`: **local**: Storage type for attachments, `local` for local disk or `minio` for s3 compatible object storage service, default is `local` or other name defined with `[storage.xxx]`