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Fix SigV4 SignatureDoesNotMatch when Expect header is stripped by WSGI server

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kqjy
2026-03-21 23:48:19 +08:00
parent a059f0502d
commit e84f1f1851
1 changed files with 12 additions and 2 deletions
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14
app/s3_api.py
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@@ -301,7 +301,12 @@ def _verify_sigv4_header(req: Any, auth_header: str) -> Principal | None:
if _HAS_RUST:
query_params = list(req.args.items(multi=True))
header_values = [(h, req.headers.get(h) or "") for h in signed_headers_str.split(";")]
header_values = []
for h in signed_headers_str.split(";"):
val = req.headers.get(h) or ""
if h.lower() == "expect" and val == "":
val = "100-continue"
header_values.append((h, val))
if not _rc.verify_sigv4_signature(
req.method, canonical_uri, query_params, signed_headers_str,
header_values, payload_hash, amz_date, date_stamp, region,
@@ -390,7 +395,12 @@ def _verify_sigv4_query(req: Any) -> Principal | None:
if _HAS_RUST:
query_params = [(k, v) for k, v in req.args.items(multi=True) if k != "X-Amz-Signature"]
header_values = [(h, req.headers.get(h) or "") for h in signed_headers_str.split(";")]
header_values = []
for h in signed_headers_str.split(";"):
val = req.headers.get(h) or ""
if h.lower() == "expect" and val == "":
val = "100-continue"
header_values.append((h, val))
if not _rc.verify_sigv4_signature(
req.method, canonical_uri, query_params, signed_headers_str,
header_values, "UNSIGNED-PAYLOAD", amz_date, date_stamp, region,