fix(api): centralize remote file retrieval (#36399)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

api/controllers/console/remote_files.py

@@ -13,7 +13,7 @@ from controllers.common.errors import (
 from controllers.common.schema import register_response_schema_models, register_schema_models
 from controllers.console import console_ns
 from controllers.console.wraps import with_current_user
-from core.helper import ssrf_proxy
+from core.file import remote_fetcher
 from extensions.ext_database import db
 from fields.file_fields import FileWithSignedUrl, RemoteFileInfo
 from graphon.file import helpers as file_helpers
@@ -36,9 +36,9 @@ class GetRemoteFileInfo(Resource):
     @login_required
     def get(self, url: str):
         decoded_url = helpers.decode_remote_url(url, request.query_string)
-        resp = ssrf_proxy.head(decoded_url)
+        resp = remote_fetcher.make_request("HEAD", decoded_url)
         if resp.status_code != httpx.codes.OK:
-            resp = ssrf_proxy.get(decoded_url, timeout=3)
+            resp = remote_fetcher.make_request("GET", decoded_url, timeout=3)
         resp.raise_for_status()
         return RemoteFileInfo(
             file_type=resp.headers.get("Content-Type", "application/octet-stream"),
@@ -58,9 +58,9 @@ class RemoteFileUpload(Resource):
 
         # Try to fetch remote file metadata/content first
         try:
-            resp = ssrf_proxy.head(url=url)
+            resp = remote_fetcher.make_request("HEAD", url=url)
             if resp.status_code != httpx.codes.OK:
-                resp = ssrf_proxy.get(url=url, timeout=3, follow_redirects=True)
+                resp = remote_fetcher.make_request("GET", url=url, timeout=3, follow_redirects=True)
             if resp.status_code != httpx.codes.OK:
                 # Normalize into a user-friendly error message expected by tests
                 raise RemoteFileUploadError(f"Failed to fetch file from {url}: {resp.text}")
@@ -74,7 +74,7 @@ class RemoteFileUpload(Resource):
             raise FileTooLargeError()
 
         # Load content if needed
-        content = resp.content if resp.request.method == "GET" else ssrf_proxy.get(url).content
+        content = resp.content if resp.request.method == "GET" else remote_fetcher.make_request("GET", url).content
 
         try:
             upload_file = FileService(db.engine).upload_file(