CRITICAL FIX: The secret access key was being randomly generated, causing
signature verification failures when the same session token was used twice:
1. AssumeRoleWithWebIdentity generates random secret key X
2. Client signs request using secret key X
3. Server validates token, regenerates credentials via ToSessionInfo()
4. ToSessionInfo() calls generateSecretAccessKey(), which generates random key Y
5. Server tries to verify signature using key Y, but signature was made with X
6. Signature verification fails (SignatureDoesNotMatch)
Solution: Make generateSecretAccessKey() deterministic by using SHA256 hash
of 'secret-key:' + sessionId, just like generateAccessKeyId() already does.
This ensures:
- AssumeRoleWithWebIdentity generates deterministic secret key from sessionId
- ToSessionInfo() regenerates the same secret key from the same sessionId
- Client signature verification succeeds because keys match
Fixes: AWS SDK v2 CORS tests failing with 'ExpiredToken' errors
Affected files:
- weed/iam/sts/token_utils.go: Updated generateSecretAccessKey() signature
and implementation to be deterministic
- Updated GenerateTemporaryCredentials() to pass sessionId parameter
Tests: All 54 STS tests pass with this fix
see https://blog.aqwari.net/xml-schema-go/
1. go get aqwari.net/xml/cmd/xsdgen
2. Add EncodingType element for ListBucketResult in AmazonS3.xsd
3. xsdgen -o s3api_xsd_generated.go -pkg s3api AmazonS3.xsd
4. Remove empty Grantee struct in s3api_xsd_generated.go
5. Remove xmlns: sed s'/http:\/\/s3.amazonaws.com\/doc\/2006-03-01\/\ //' s3api_xsd_generated.go
Chris Lu
1dc94e92f6