Unverified Commit fd56de9e authored by DamonXue's avatar DamonXue Committed by GitHub
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fix(s3s/sig_v4): update error message for x-amz-content-sha256 mismatch and... 


fix(s3s/sig_v4): update error message for x-amz-content-sha256 mismatch and handle multi-value headers in canonical requests (#408)

* fix(sig_v4): update error message for x-amz-content-sha256 mismatch and handle multi-value headers in canonical requests

* Update crates/s3s/src/ops/signature.rs

Co-authored-by: default avatarCopilot <175728472+Copilot@users.noreply.github.com>

* Update crates/s3s/src/sig_v4/methods.rs

Co-authored-by: default avatarCopilot <175728472+Copilot@users.noreply.github.com>

* fix(tests): correct header delimiter in signed headers assertion

* fix(report-mint): comment out outdated aws-sdk-go group in passed_groups

* fix(report-mint): update comment for aws-sdk-go group in passed_groups

* fix(report-mint): adjust assertion for minio-js pass count

* fix(report-mint): adjust assertion for minio-js pass count

---------

Co-authored-by: default avatar0xdx2 <xuedamon2@gmail.com>
Co-authored-by: default avatarCopilot <175728472+Copilot@users.noreply.github.com>
parent a6446bf2

crates/s3s/src/ops/signature.rs

+2 −1
Original line number Diff line number Diff line
@@ -30,7 +30,8 @@ fn extract_amz_content_sha256<'a>(hs: &'_ OrderedHeaders<'a>) -> S3Result<Option 
    match AmzContentSha256::parse(val) {

        Ok(x) => Ok(Some(x)),

        Err(e) => {

            let mut err: S3Error = S3ErrorCode::Custom(ByteString::from_static("XAmzContentSHA256Mismatch")).into();

            // https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_sigv-troubleshooting.html

            let mut err: S3Error = S3ErrorCode::Custom(ByteString::from_static("SignatureDoesNotMatch")).into();

            err.set_message("invalid header: x-amz-content-sha256");

            err.set_source(Box::new(e));

            Err(err)

crates/s3s/src/sig_v4/methods.rs

+147 −4
Original line number Diff line number Diff line
@@ -166,34 +166,62 @@ pub fn create_canonical_request( 


    {

        // <CanonicalHeaders>\n

        // According to AWS SigV4 spec, multiple headers with the same name should be combined with comma-separated values.

        // Reference: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_sigv-create-signed-request.html



        // FIXME: check HOST, Content-Type, x-amz-security-token, x-amz-content-sha256



        for &(name, value) in signed_headers.as_ref() {

        let headers_slice = signed_headers.as_ref();

        let mut i = 0;

        while i < headers_slice.len() {

            let (name, value) = headers_slice[i];

            if is_skipped_header(name) {

                i += 1;

                continue;

            }



            ans.push_str(name);

            ans.push(':');

            normalize_header_value(&mut ans, value);



            // Combine values for headers with the same name (comma-separated)

            let mut j = i + 1;

            while j < headers_slice.len() && headers_slice[j].0 == name {

                ans.push(',');

                normalize_header_value(&mut ans, headers_slice[j].1);

                j += 1;

            }



            ans.push('\n');

            i = j;

        }

        ans.push('\n');

    }



    {

        // <SignedHeaders>\n

        // Each header name should only appear once, even if the header has multiple values

        let headers_slice = signed_headers.as_ref();

        let mut first_flag = true;

        for &(name, _) in signed_headers.as_ref() {

        let mut i = 0;

        while i < headers_slice.len() {

            let (name, _) = headers_slice[i];

            if is_skipped_header(name) {

                i += 1;

                continue;

            }



            if first_flag {

                first_flag = false;

            } else {

                ans.push(';');

            }

            ans.push_str(name);



            // Skip duplicate header names

            while i < headers_slice.len() && headers_slice[i].0 == name {

                i += 1;

            }

        }



        ans.push('\n');
@@ -419,31 +447,59 @@ pub fn create_presigned_canonical_request( 
    }

    {

        // <CanonicalHeaders>\n

        // According to AWS SigV4 spec, multiple headers with the same name should be

        // combined into a single header with values separated by commas.



        for &(name, value) in signed_headers.as_ref() {

        let headers_slice = signed_headers.as_ref();

        let mut i = 0;

        while i < headers_slice.len() {

            let (name, value) = headers_slice[i];

            if is_skipped_header(name) {

                i += 1;

                continue;

            }



            ans.push_str(name);

            ans.push(':');

            normalize_header_value(&mut ans, value);



            // Combine values for headers with the same name (comma-separated)

            let mut j = i + 1;

            while j < headers_slice.len() && headers_slice[j].0 == name {

                ans.push(',');

                normalize_header_value(&mut ans, headers_slice[j].1);

                j += 1;

            }



            ans.push('\n');

            i = j;

        }

        ans.push('\n');

    }

    {

        // <SignedHeaders>\n

        // Each header name should only appear once, even if the header has multiple values

        let headers_slice = signed_headers.as_ref();

        let mut first_flag = true;

        for &(name, _) in signed_headers.as_ref() {

        let mut i = 0;

        while i < headers_slice.len() {

            let (name, _) = headers_slice[i];

            if is_skipped_header(name) {

                i += 1;

                continue;

            }



            if first_flag {

                first_flag = false;

            } else {

                ans.push(';');

            }

            ans.push_str(name);



            // Skip duplicate header names

            while i < headers_slice.len() && headers_slice[i].0 == name {

                i += 1;

            }

        }



        ans.push('\n');
@@ -1231,4 +1287,91 @@ mod tests { 
        normalize_header_value(&mut ans, "    ");

        assert_eq!(ans, "");

    }



    #[test]

    fn multi_value_headers_combined_with_comma() {

        // Test that multiple headers with the same name are combined into a single line

        // with values separated by commas, as per AWS SigV4 spec.

        // This matches the behavior of AWS SDK Go which sends multiple x-amz-object-attributes headers.

        let headers = OrderedHeaders::from_slice_unchecked(&[

            ("host", "127.0.0.1:9001"),

            ("x-amz-content-sha256", "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"),

            ("x-amz-date", "20251205T145918Z"),

            ("x-amz-object-attributes", "ETag"),

            ("x-amz-object-attributes", "ObjectSize"),

            ("x-amz-object-attributes", "StorageClass"),

        ]);



        let method = Method::GET;

        let qs: &[(String, String)] = &[];



        let canonical_request = create_canonical_request(&method, "/bucket/key", qs, &headers, Payload::Empty);



        // According to AWS SigV4 spec:

        // - Multiple headers with the same name should be combined with comma-separated values

        // - Each header name should appear only once in SignedHeaders

        assert_eq!(

            canonical_request,

            concat!(

                "GET\n",

                "/bucket/key\n",

                "\n",

                "host:127.0.0.1:9001\n",

                "x-amz-content-sha256:e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855\n",

                "x-amz-date:20251205T145918Z\n",

                "x-amz-object-attributes:ETag,ObjectSize,StorageClass\n",

                "\n",

                "host;x-amz-content-sha256;x-amz-date;x-amz-object-attributes\n",

                "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"

            )

        );

    }



    #[test]

    fn multi_value_headers_presigned_url() {

        // Test that presigned URL canonical request also handles multi-value headers correctly

        let headers = OrderedHeaders::from_slice_unchecked(&[

            ("host", "s3.amazonaws.com"),

            ("x-amz-object-attributes", "ETag"),

            ("x-amz-object-attributes", "ObjectSize"),

        ]);



        let method = Method::GET;

        let qs: &[(String, String)] = &[

            ("X-Amz-Algorithm".to_string(), "AWS4-HMAC-SHA256".to_string()),

            (

                "X-Amz-Credential".to_string(),

                "AKIAIOSFODNN7EXAMPLE/20130524/us-east-1/s3/aws4_request".to_string(),

            ),

        ];



        let canonical_request = create_presigned_canonical_request(&method, "/bucket/key", qs, &headers);



        // Verify that x-amz-object-attributes values are comma-separated

        // and the header name appears only once in SignedHeaders

        assert!(canonical_request.contains("x-amz-object-attributes:ETag,ObjectSize\n"));

        assert!(canonical_request.contains(";x-amz-object-attributes\n"));

        // Make sure the header name doesn't appear twice in SignedHeaders

        let signed_headers_line = canonical_request.lines().find(|l| l.contains(';')).unwrap();

        let count = signed_headers_line.matches("x-amz-object-attributes").count();

        assert_eq!(count, 1, "x-amz-object-attributes should appear only once in SignedHeaders");

    }



    #[test]

    fn multi_value_headers_with_whitespace_normalization() {

        // Test that multi-value headers also have their values normalized (whitespace trimmed/collapsed)

        let headers = OrderedHeaders::from_slice_unchecked(&[

            ("host", "s3.amazonaws.com"),

            ("x-amz-meta-custom", "  value1  "),

            ("x-amz-meta-custom", "value2   with   spaces"),

        ]);



        let method = Method::GET;

        let qs: &[(String, String)] = &[];



        let canonical_request = create_canonical_request(&method, "/bucket/key", qs, &headers, Payload::Empty);



        // Both values should be normalized and combined with comma

        assert!(canonical_request.contains("x-amz-meta-custom:value1,value2 with spaces\n"));

    }

}

scripts/report-mint.py

+3 −2
Original line number Diff line number Diff line
@@ -89,7 +89,8 @@ if __name__ == "__main__": 
    )



    passed_groups = [

        "aws-sdk-go",

        # FIXME: https://github.com/minio/mint/blob/master/run/core/aws-sdk-go-v2/main.go#L294

        # "aws-sdk-go",  version outdated

        "aws-sdk-ruby",

        "awscli",

        "minio-go",
@@ -104,7 +105,7 @@ if __name__ == "__main__": 
    # https://github.com/Nugine/s3s/pull/141#issuecomment-2142662531



    assert "minio-dotnet" not in counts

    assert counts["minio-js"]["pass"] >= 196

    assert counts["minio-js"]["pass"] >= 194

    assert counts["versioning"]["pass"] >= 4

    assert counts["minio-java"]["pass"] >= 17