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Chris Lu
b88156fe6b
* fix(s3api): use direct peer IP for aws:SourceIp in bucket policy engine extractSourceIP in the bucket-policy engine trusted X-Forwarded-For and X-Real-Ip whenever the TCP peer looked private (loopback/RFC1918/link-local), with no configurable trusted-proxy allowlist. In containerized deployments the gateway peer is almost always private, so any caller reaching it directly or from a co-located workload could spoof aws:SourceIp and bypass IpAddress/NotIpAddress bucket-policy restrictions. Always return the direct peer address (r.RemoteAddr), matching AWS S3 semantics. Remove the now-unused isPrivateIP helper and header-trust branch. Update TestExtractConditionValuesFromRequestSourceIPPrecedence to assert the peer IP is used regardless of forwarding headers, and add regression tests TestExtractSourceIP_IgnoresForwardedHeaders and TestExtractSourceIP_EnforcesIPRestrictionPolicy. * fix(s3api): use direct peer IP for aws:SourceIp in IAM role/session policies The IAM middleware's extractSourceIP trusted X-Forwarded-For and X-Real-IP whenever the TCP peer looked private (loopback/RFC1918/link-local), with no configurable trusted-proxy allowlist. In containerized deployments the gateway peer is almost always private, so any caller reaching it directly or from a co-located workload could spoof aws:SourceIp and bypass IpAddress/NotIpAddress conditions on role and session policies (IsPrincipalActionExplicitlyDenied). Always return the direct peer address (r.RemoteAddr), matching AWS S3 semantics. Remove the now-unused isPrivateIP helper, privateNetworks table, and its init(). Update TestRequestContextExtraction and TestIPBasedPolicyEnforcement to assert the peer IP is enforced regardless of forwarding headers, and add regression test TestUserInlinePolicySourceIpCondition_IgnoresForwardedHeaders.