Address S113 @ `oidc-exchange.py`

PR #231
Resolves #229

Co-authored-by: Sviatoslav Sydorenko <webknjaz@redhat.com>

.pre-commit-config.yaml

@@ -112,6 +112,7 @@ repos:
     - flake8-2020 ~= 1.7.0
     - flake8-pytest-style ~= 1.6.0
     - wemake-python-styleguide ~= 0.19.0
+    language_version: python3.11  # flake8-commas doesn't work w/ Python 3.12
 
 - repo: https://github.com/PyCQA/pylint.git
   rev: v3.1.0

oidc-exchange.py

@@ -10,7 +10,7 @@ from urllib.parse import urlparse
 import id  # pylint: disable=redefined-builtin
 import requests
 
-_GITHUB_STEP_SUMMARY = Path(os.getenv("GITHUB_STEP_SUMMARY"))
+_GITHUB_STEP_SUMMARY = Path(os.getenv('GITHUB_STEP_SUMMARY'))
 
 # The top-level error message that gets rendered.
 # This message wraps one of the other templates/messages defined below.
@@ -45,7 +45,7 @@ permissions:
 ```
 
 Learn more at https://docs.github.com/en/actions/deployment/security-hardening-your-deployments/about-security-hardening-with-openid-connect#adding-permissions-settings.
-"""
+"""  # noqa: S105; not a password
 
 # Specialization of the token retrieval failure case, when we know that
 # the failure cause is use within a third-party PR.
@@ -59,7 +59,7 @@ even if `id-token: write` is explicitly configured.
 To fix this, change your publishing workflow to use an event that
 forks of your repository cannot trigger (such as tag or release
 creation, or a manually triggered workflow dispatch).
-"""
+"""  # noqa: S105; not a password
 
 # Rendered if the package index refuses the given OIDC token.
 _SERVER_REFUSED_TOKEN_EXCHANGE_MESSAGE = """
@@ -71,7 +71,7 @@ This generally indicates a trusted publisher configuration error, but could
 also indicate an internal error on GitHub or PyPI's part.
 
 {rendered_claims}
-"""
+"""  # noqa: S105; not a password
 
 _RENDERED_CLAIMS = """
 The claims rendered below are **for debugging purposes only**. You should **not**
@@ -97,7 +97,7 @@ Token request failed: the index produced an unexpected
 
 This strongly suggests a server configuration or downtime issue; wait
 a few minutes and try again.
-"""
+"""  # noqa: S105; not a password
 
 # Rendered if the package index's token response isn't a valid API token payload.
 _SERVER_TOKEN_RESPONSE_MALFORMED_MESSAGE = """
@@ -105,30 +105,30 @@ Token response error: the index gave us an invalid response.
 
 This strongly suggests a server configuration or downtime issue; wait
 a few minutes and try again.
-"""
+"""  # noqa: S105; not a password
 
 
 def die(msg: str) -> NoReturn:
-    with _GITHUB_STEP_SUMMARY.open("a", encoding="utf-8") as io:
+    with _GITHUB_STEP_SUMMARY.open('a', encoding='utf-8') as io:
         print(_ERROR_SUMMARY_MESSAGE.format(message=msg), file=io)
 
     # HACK: GitHub Actions' annotations don't work across multiple lines naively;
     # translating `\n` into `%0A` (i.e., HTML percent-encoding) is known to work.
     # See: https://github.com/actions/toolkit/issues/193
-    msg = msg.replace("\n", "%0A")
-    print(f"::error::Trusted publishing exchange failure: {msg}", file=sys.stderr)
+    msg = msg.replace('\n', '%0A')
+    print(f'::error::Trusted publishing exchange failure: {msg}', file=sys.stderr)
     sys.exit(1)
 
 
 def debug(msg: str):
-    print(f"::debug::{msg.title()}", file=sys.stderr)
+    print(f'::debug::{msg.title()}', file=sys.stderr)
 
 
 def get_normalized_input(name: str) -> str | None:
-    name = f"INPUT_{name.upper()}"
+    name = f'INPUT_{name.upper()}'
     if val := os.getenv(name):
         return val
-    return os.getenv(name.replace("-", "_"))
+    return os.getenv(name.replace('-', '_'))
 
 
 def assert_successful_audience_call(resp: requests.Response, domain: str):
@@ -140,13 +140,13 @@ def assert_successful_audience_call(resp: requests.Response, domain: str):
             # This index supports OIDC, but forbids the client from using
             # it (either because it's disabled, ratelimited, etc.)
             die(
-                f"audience retrieval failed: repository at {domain} has trusted publishing disabled",
+                f'audience retrieval failed: repository at {domain} has trusted publishing disabled',
             )
         case HTTPStatus.NOT_FOUND:
             # This index does not support OIDC.
             die(
-                "audience retrieval failed: repository at "
-                f"{domain} does not indicate trusted publishing support",
+                'audience retrieval failed: repository at '
+                f'{domain} does not indicate trusted publishing support',
             )
         case other:
             status = HTTPStatus(other)
@@ -154,67 +154,67 @@ def assert_successful_audience_call(resp: requests.Response, domain: str):
             # something we expect. This can happen if the index is broken, in maintenance mode,
             # misconfigured, etc.
             die(
-                "audience retrieval failed: repository at "
-                f"{domain} responded with unexpected {other}: {status.phrase}",
+                'audience retrieval failed: repository at '
+                f'{domain} responded with unexpected {other}: {status.phrase}',
             )
 
 
 def render_claims(token: str) -> str:
-    _, payload, _ = token.split(".", 2)
+    _, payload, _ = token.split('.', 2)
 
     # urlsafe_b64decode needs padding; JWT payloads don't contain any.
-    payload += "=" * (4 - (len(payload) % 4))
+    payload += '=' * (4 - (len(payload) % 4))
     claims = json.loads(base64.urlsafe_b64decode(payload))
 
     def _get(name: str) -> str:  # noqa: WPS430
-        return claims.get(name, "MISSING")
+        return claims.get(name, 'MISSING')
 
     return _RENDERED_CLAIMS.format(
-        sub=_get("sub"),
-        repository=_get("repository"),
-        repository_owner=_get("repository_owner"),
-        repository_owner_id=_get("repository_owner_id"),
-        job_workflow_ref=_get("job_workflow_ref"),
-        ref=_get("ref"),
+        sub=_get('sub'),
+        repository=_get('repository'),
+        repository_owner=_get('repository_owner'),
+        repository_owner_id=_get('repository_owner_id'),
+        job_workflow_ref=_get('job_workflow_ref'),
+        ref=_get('ref'),
     )
 
 
 def event_is_third_party_pr() -> bool:
     # Non-`pull_request` events cannot be from third-party PRs.
-    if os.getenv("GITHUB_EVENT_NAME") != "pull_request":
+    if os.getenv('GITHUB_EVENT_NAME') != 'pull_request':
         return False
 
-    event_path = os.getenv("GITHUB_EVENT_PATH")
+    event_path = os.getenv('GITHUB_EVENT_PATH')
     if not event_path:
         # No GITHUB_EVENT_PATH indicates a weird GitHub or runner bug.
-        debug("unexpected: no GITHUB_EVENT_PATH to check")
+        debug('unexpected: no GITHUB_EVENT_PATH to check')
         return False
 
     try:
         event = json.loads(Path(event_path).read_bytes())
     except json.JSONDecodeError:
-        debug("unexpected: GITHUB_EVENT_PATH does not contain valid JSON")
+        debug('unexpected: GITHUB_EVENT_PATH does not contain valid JSON')
         return False
 
     try:
-        return event["pull_request"]["head"]["repo"]["fork"]
+        return event['pull_request']['head']['repo']['fork']
     except KeyError:
         return False
 
 
-repository_url = get_normalized_input("repository-url")
+repository_url = get_normalized_input('repository-url')
 repository_domain = urlparse(repository_url).netloc
-token_exchange_url = f"https://{repository_domain}/_/oidc/mint-token"
+token_exchange_url = f'https://{repository_domain}/_/oidc/mint-token'
 
 # Indices are expected to support `https://{domain}/_/oidc/audience`,
 # which tells OIDC exchange clients which audience to use.
-audience_url = f"https://{repository_domain}/_/oidc/audience"
-audience_resp = requests.get(audience_url)
+audience_url = f'https://{repository_domain}/_/oidc/audience'
+audience_resp = requests.get(audience_url, timeout=5)  # S113 wants a timeout
 assert_successful_audience_call(audience_resp, repository_domain)
 
-oidc_audience = audience_resp.json()["audience"]
+oidc_audience = audience_resp.json()['audience']
 
-debug(f"selected trusted publishing exchange endpoint: {token_exchange_url}")
+debug(f'selected trusted publishing exchange endpoint: {token_exchange_url}')
 
 try:
     oidc_token = id.detect_credential(audience=oidc_audience)
@@ -229,7 +229,8 @@ except id.IdentityError as identity_error:
 # Now we can do the actual token exchange.
 mint_token_resp = requests.post(
     token_exchange_url,
-    json={"token": oidc_token},
+    json={'token': oidc_token},
+    timeout=5,  # S113 wants a timeout
 )
 
 try:
@@ -246,9 +247,9 @@ except requests.JSONDecodeError:
 # On failure, the JSON response includes the list of errors that
 # occurred during minting.
 if not mint_token_resp.ok:
-    reasons = "\n".join(
-        f"* `{error['code']}`: {error['description']}"
-        for error in mint_token_payload["errors"]
+    reasons = '\n'.join(
+        f'* `{error["code"]}`: {error["description"]}'
+        for error in mint_token_payload['errors']
     )
 
     rendered_claims = render_claims(oidc_token)
@@ -260,12 +261,12 @@ if not mint_token_resp.ok:
         ),
     )
 
-pypi_token = mint_token_payload.get("token")
+pypi_token = mint_token_payload.get('token')
 if pypi_token is None:
     die(_SERVER_TOKEN_RESPONSE_MALFORMED_MESSAGE)
 
 # Mask the newly minted PyPI token, so that we don't accidentally leak it in logs.
-print(f"::add-mask::{pypi_token}", file=sys.stderr)
+print(f'::add-mask::{pypi_token}', file=sys.stderr)
 
 # This final print will be captured by the subshell in `twine-upload.sh`.
 print(pypi_token)

print-hash.py

@@ -4,15 +4,15 @@ import sys
 
 packages_dir = pathlib.Path(sys.argv[1]).resolve().absolute()
 
-print("Showing hash values of files to be uploaded:")
+print('Showing hash values of files to be uploaded:')
 
 for file_object in packages_dir.iterdir():
     sha256 = hashlib.sha256()
-    md5 = hashlib.md5()
+    md5 = hashlib.md5()  # noqa: S324; only use for reference
     blake2_256 = hashlib.blake2b(digest_size=256 // 8)
 
     print(file_object)
-    print("")
+    print('')
 
     content = file_object.read_bytes()
 
@@ -20,7 +20,7 @@ for file_object in packages_dir.iterdir():
     md5.update(content)
     blake2_256.update(content)
 
-    print(f"SHA256: {sha256.hexdigest()}")
-    print(f"MD5: {md5.hexdigest()}")
-    print(f"BLAKE2-256: {blake2_256.hexdigest()}")
-    print("")
+    print(f'SHA256: {sha256.hexdigest()}')
+    print(f'MD5: {md5.hexdigest()}')
+    print(f'BLAKE2-256: {blake2_256.hexdigest()}')
+    print('')

requirements/runtime.txt

@@ -18,7 +18,7 @@ docutils==0.20.1
     # via readme-renderer
 id==1.3.0
     # via -r runtime.in
-idna==3.6
+idna==3.7
     # via requests
 importlib-metadata==7.0.2
     # via twine

twine-upload.sh

@@ -40,9 +40,9 @@ INPUT_VERIFY_METADATA="$(get-normalized-input 'verify-metadata')"
 INPUT_SKIP_EXISTING="$(get-normalized-input 'skip-existing')"
 INPUT_PRINT_HASH="$(get-normalized-input 'print-hash')"
 
-PASSWORD_DEPRECATION_NUDGE="::error title=Password-based uploads deprecated::\
-Starting in 2024, PyPI will require all users to enable Two-Factor \
-Authentication. This will consequently require all users to switch \
+PASSWORD_DEPRECATION_NUDGE="::error title=Password-based uploads disabled::\
+As of 2024, PyPI requires all users to enable Two-Factor \
+Authentication. This consequently requires all users to switch \
 to either Trusted Publishers (preferred) or API tokens for package \
 uploads. Read more: \
 https://blog.pypi.org/posts/2023-05-25-securing-pypi-with-2fa/"
@@ -74,6 +74,7 @@ else
     if [[ "${INPUT_REPOSITORY_URL}" =~ pypi\.org ]]; then
         echo "${PASSWORD_DEPRECATION_NUDGE}"
         echo "${TRUSTED_PUBLISHING_NUDGE}"
+        exit 1
     fi
 fi
 
@@ -120,9 +121,9 @@ if [[ ${INPUT_VERIFY_METADATA,,} != "false" ]] ; then
     twine check ${INPUT_PACKAGES_DIR%%/}/*
 fi
 
-TWINE_EXTRA_ARGS=
+TWINE_EXTRA_ARGS=--disable-progress-bar
 if [[ ${INPUT_SKIP_EXISTING,,} != "false" ]] ; then
-    TWINE_EXTRA_ARGS=--skip-existing
+    TWINE_EXTRA_ARGS="${TWINE_EXTRA_ARGS} --skip-existing"
 fi
 
 if [[ ${INPUT_VERBOSE,,} != "false" ]] ; then