fix(extensions,presets): surface clean error on malformed download URL#3577
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fix(extensions,presets): surface clean error on malformed download URL#3577Noor-ul-ain001 wants to merge 1 commit into
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`ExtensionCatalog.download_extension` and `PresetCatalog.download_pack` read `download_url` from catalog payload data and pass it to `urlparse(...).hostname` during the HTTPS validation. A malformed authority (e.g. an unterminated IPv6 bracket like `https://[::1`) makes urlparse/hostname raise a raw `ValueError`, which escapes past the command handlers — they only catch `ExtensionError` / `PresetError` — and surfaces as an uncaught traceback. Guard the parse in a try/except and re-raise as the domain error so the CLI reports a clean "download URL is malformed" message. Mirrors the same fix in catalogs (github#3435) and workflows/catalog.py (github#3484). Adds regression coverage for both catalogs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Pull request overview
Converts malformed extension and preset download URLs into domain-specific errors.
Changes:
- Guards URL parsing and hostname access.
- Adds regression coverage for malformed IPv6 authorities.
Show a summary per file
| File | Description |
|---|---|
src/specify_cli/extensions/__init__.py |
Raises ExtensionError for malformed URLs. |
src/specify_cli/presets/__init__.py |
Raises PresetError for malformed URLs. |
tests/test_extensions.py |
Tests malformed extension URLs. |
tests/test_presets.py |
Tests malformed preset URLs. |
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| hostname = parsed.hostname | ||
| except ValueError: | ||
| raise PresetError( | ||
| f"Preset download URL is malformed: {download_url}" |
mnriem
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Jul 17, 2026
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Summary
ExtensionCatalog.download_extensionandPresetCatalog.download_packread adownload_urlfrom catalog payload data and pass it throughurlparse(...).hostnameduring their HTTPS validation. A malformed authority — e.g. an unterminated IPv6 bracket likehttps://[::1, orhttps://[not-an-ip]/x— makesurlparse/.hostnameraise a rawValueError.That
ValueErrorescapes the command handlers, which only catchExtensionError/PresetError, so instead of a clean CLI message the user gets an uncaught traceback.This wraps the parse in a
try/except ValueErrorand re-raises as the module's domain error (ExtensionError/PresetError) with a clear "download URL is malformed" message.Bug class
Same shape as the already-fixed unguarded-
urlparseleaks in:workflows/catalog.py(fix(workflows): raise catalog error, not raw ValueError, on a malformed catalog URL #3484)This closes the two remaining sibling code paths (extensions + presets) that had the same latent crash.
Changes
src/specify_cli/extensions/__init__.py— guard thedownload_urlparse indownload_extension.src/specify_cli/presets/__init__.py— guard thedownload_urlparse indownload_pack.tests/test_extensions.py— regression test asserting a malformed URL raisesExtensionError(notValueError).tests/test_presets.py— matching regression test fordownload_pack.Testing
ValueError) and pass with the guard ("test-the-test" verified).tests/test_extensions.pyandtests/test_presets.pypass (717 passed, 5 skipped).🤖 Generated with Claude Code