upload: Pass down content-type of realm icon/logo to backend.

This saves having to try to re-derive it from the file extension,
which may be ".original" in some cases.

zerver/lib/upload/__init__.py

@@ -310,12 +310,14 @@ def delete_avatar_image(user_profile: UserProfile, avatar_version: int) -> None:
 # Realm icon and logo uploads
 
 
-def upload_icon_image(user_file: IO[bytes], user_profile: UserProfile) -> None:
-    upload_backend.upload_realm_icon_image(user_file, user_profile)
+def upload_icon_image(user_file: IO[bytes], user_profile: UserProfile, content_type: str) -> None:
+    upload_backend.upload_realm_icon_image(user_file, user_profile, content_type)
 
 
-def upload_logo_image(user_file: IO[bytes], user_profile: UserProfile, night: bool) -> None:
-    upload_backend.upload_realm_logo_image(user_file, user_profile, night)
+def upload_logo_image(
+    user_file: IO[bytes], user_profile: UserProfile, night: bool, content_type: str
+) -> None:
+    upload_backend.upload_realm_logo_image(user_file, user_profile, night, content_type)
 
 
 # Realm emoji uploads

zerver/lib/upload/base.py

@@ -90,14 +90,16 @@ class ZulipUploadBackend:
     def get_realm_icon_url(self, realm_id: int, version: int) -> str:
         raise NotImplementedError
 
-    def upload_realm_icon_image(self, icon_file: IO[bytes], user_profile: UserProfile) -> None:
+    def upload_realm_icon_image(
+        self, icon_file: IO[bytes], user_profile: UserProfile, content_type: str
+    ) -> None:
         raise NotImplementedError
 
     def get_realm_logo_url(self, realm_id: int, version: int, night: bool) -> str:
         raise NotImplementedError
 
     def upload_realm_logo_image(
-        self, logo_file: IO[bytes], user_profile: UserProfile, night: bool
+        self, logo_file: IO[bytes], user_profile: UserProfile, night: bool, content_type: str
     ) -> None:
         raise NotImplementedError
 

zerver/lib/upload/local.py

@@ -138,7 +138,9 @@ class LocalUploadBackend(ZulipUploadBackend):
         return f"/user_avatars/{realm_id}/realm/icon.png?version={version}"
 
     @override
-    def upload_realm_icon_image(self, icon_file: IO[bytes], user_profile: UserProfile) -> None:
+    def upload_realm_icon_image(
+        self, icon_file: IO[bytes], user_profile: UserProfile, content_type: str
+    ) -> None:
         upload_path = self.realm_avatar_and_logo_path(user_profile.realm)
         image_data = icon_file.read()
         write_local_file("avatars", os.path.join(upload_path, "icon.original"), image_data)
@@ -156,7 +158,7 @@ class LocalUploadBackend(ZulipUploadBackend):
 
     @override
     def upload_realm_logo_image(
-        self, logo_file: IO[bytes], user_profile: UserProfile, night: bool
+        self, logo_file: IO[bytes], user_profile: UserProfile, night: bool, content_type: str
     ) -> None:
         upload_path = self.realm_avatar_and_logo_path(user_profile.realm)
         if night:

zerver/lib/upload/s3.py

@@ -12,7 +12,6 @@ from django.conf import settings
 from mypy_boto3_s3.service_resource import Bucket
 from typing_extensions import override
 
-from zerver.lib.mime_types import guess_type
 from zerver.lib.thumbnail import resize_avatar, resize_logo
 from zerver.lib.upload.base import INLINE_MIME_TYPES, ZulipUploadBackend
 from zerver.models import Realm, RealmEmoji, UserProfile
@@ -87,7 +86,7 @@ def upload_image_to_s3(
         metadata.update(extra_metadata)
 
     extras = {}
-    if content_type is None:
+    if content_type is None:  # nocoverage
         content_type = ""
     if content_type not in INLINE_MIME_TYPES:
         extras["ContentDisposition"] = "attachment"
@@ -297,8 +296,9 @@ class S3UploadBackend(ZulipUploadBackend):
         return public_url + f"?version={version}"
 
     @override
-    def upload_realm_icon_image(self, icon_file: IO[bytes], user_profile: UserProfile) -> None:
-        content_type = guess_type(icon_file.name)[0]
+    def upload_realm_icon_image(
+        self, icon_file: IO[bytes], user_profile: UserProfile, content_type: str
+    ) -> None:
         s3_file_name = os.path.join(self.realm_avatar_and_logo_path(user_profile.realm), "icon")
 
         image_data = icon_file.read()
@@ -332,9 +332,8 @@ class S3UploadBackend(ZulipUploadBackend):
 
     @override
     def upload_realm_logo_image(
-        self, logo_file: IO[bytes], user_profile: UserProfile, night: bool
+        self, logo_file: IO[bytes], user_profile: UserProfile, night: bool, content_type: str
     ) -> None:
-        content_type = guess_type(logo_file.name)[0]
         if night:
             basename = "night_logo"
         else:

zerver/tests/test_import_export.py

@@ -187,14 +187,18 @@ class ExportFile(ZulipTestCase):
         realm = user_profile.realm
 
         with get_test_image_file("img.png") as img_file:
-            upload.upload_backend.upload_realm_icon_image(img_file, user_profile)
+            upload.upload_backend.upload_realm_icon_image(img_file, user_profile, "image/png")
             do_change_icon_source(realm, Realm.ICON_UPLOADED, acting_user=None)
 
         with get_test_image_file("img.png") as img_file:
-            upload.upload_backend.upload_realm_logo_image(img_file, user_profile, night=False)
+            upload.upload_backend.upload_realm_logo_image(
+                img_file, user_profile, night=False, content_type="image/png"
+            )
             do_change_logo_source(realm, Realm.LOGO_UPLOADED, False, acting_user=user_profile)
         with get_test_image_file("img.png") as img_file:
-            upload.upload_backend.upload_realm_logo_image(img_file, user_profile, night=True)
+            upload.upload_backend.upload_realm_logo_image(
+                img_file, user_profile, night=True, content_type="image/png"
+            )
             do_change_logo_source(realm, Realm.LOGO_UPLOADED, True, acting_user=user_profile)
 
     def verify_attachment_json(self, user: UserProfile) -> None:

zerver/tests/test_upload_s3.py

@@ -402,7 +402,9 @@ class S3Test(ZulipTestCase):
 
         user_profile = self.example_user("hamlet")
         with get_test_image_file("img.png") as image_file:
-            zerver.lib.upload.upload_backend.upload_realm_icon_image(image_file, user_profile)
+            zerver.lib.upload.upload_backend.upload_realm_icon_image(
+                image_file, user_profile, content_type="image/png"
+            )
 
         original_path_id = os.path.join(str(user_profile.realm.id), "realm", "icon.original")
         original_key = bucket.Object(original_path_id)
@@ -421,7 +423,7 @@ class S3Test(ZulipTestCase):
         user_profile = self.example_user("hamlet")
         with get_test_image_file("img.png") as image_file:
             zerver.lib.upload.upload_backend.upload_realm_logo_image(
-                image_file, user_profile, night
+                image_file, user_profile, night, "image/png"
             )
 
         original_path_id = os.path.join(

zerver/views/realm_icon.py

@@ -9,7 +9,7 @@ from zerver.decorator import require_realm_admin
 from zerver.lib.exceptions import JsonableError
 from zerver.lib.realm_icon import realm_icon_url
 from zerver.lib.response import json_success
-from zerver.lib.upload import upload_icon_image
+from zerver.lib.upload import get_file_info, upload_icon_image
 from zerver.lib.url_encoding import append_url_query_string
 from zerver.models import UserProfile
 
@@ -28,7 +28,8 @@ def upload_icon(request: HttpRequest, user_profile: UserProfile) -> HttpResponse
                 max_size=settings.MAX_ICON_FILE_SIZE_MIB,
             )
         )
-    upload_icon_image(icon_file, user_profile)
+    _filename, content_type = get_file_info(icon_file)
+    upload_icon_image(icon_file, user_profile, content_type=content_type)
     do_change_icon_source(
         user_profile.realm, user_profile.realm.ICON_UPLOADED, acting_user=user_profile
     )

zerver/views/realm_logo.py

@@ -10,7 +10,7 @@ from zerver.lib.exceptions import JsonableError
 from zerver.lib.realm_logo import get_realm_logo_url
 from zerver.lib.request import REQ, has_request_variables
 from zerver.lib.response import json_success
-from zerver.lib.upload import upload_logo_image
+from zerver.lib.upload import get_file_info, upload_logo_image
 from zerver.lib.url_encoding import append_url_query_string
 from zerver.lib.validator import check_bool
 from zerver.models import UserProfile
@@ -34,7 +34,8 @@ def upload_logo(
                 max_size=settings.MAX_LOGO_FILE_SIZE_MIB,
             )
         )
-    upload_logo_image(logo_file, user_profile, night)
+    _filename, content_type = get_file_info(logo_file)
+    upload_logo_image(logo_file, user_profile, night, content_type=content_type)
     do_change_logo_source(
         user_profile.realm, user_profile.realm.LOGO_UPLOADED, night, acting_user=user_profile
     )