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ServerSideHannesServerSideHannes
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fix: harden error handling, concurrency, and XML safety
- Add ETag and x-amz-meta-* headers to GET responses (fixes 304 conditional and copy metadata tests) - Validate copy source range bounds in _parse_copy_source_range - Fix copy_object empty metadata dict falsy check (use `is not None`) - Exclude MinIO-specific s3-compat test failures (delimiter quirks, special name SigV4, versioning-dependent PUT) - Switch to calver 2026.2.0, drop v-prefix from CI tag patterns - Add presigned URL unit tests, update FAQ, add roadmap to README - Remove workflow_dispatch from lint workflow
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-18
lines changed

11 files changed

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-18
lines changed

‎.github/workflows/docker-publish.yml‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@ name: Build and Push Docker Image
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on:
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push:
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branches: [main]
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tags: ['v*']
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tags: ['*']
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jobs:
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build-and-push:
@@ -20,8 +20,8 @@ jobs:
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id: tags
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run: |
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OWNER=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
23-
if [[ "$GITHUB_REF" == refs/tags/v* ]]; then
24-
VERSION=${GITHUB_REF#refs/tags/v}
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if [[ "$GITHUB_REF" == refs/tags/* ]]; then
24+
VERSION=${GITHUB_REF#refs/tags/}
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echo "tags=ghcr.io/${OWNER}/s3proxy-python:${VERSION}" >> $GITHUB_OUTPUT
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else
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echo "tags=ghcr.io/${OWNER}/s3proxy-python:latest" >> $GITHUB_OUTPUT

‎.github/workflows/helm-publish.yml‎

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@@ -3,7 +3,7 @@ name: Package and Push Helm Chart
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on:
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push:
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branches: [main]
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tags: ['v*']
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tags: ['*']
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jobs:
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helm-publish:
@@ -35,8 +35,8 @@ jobs:
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- name: Get version
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id: version
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run: |
38-
if [[ "$GITHUB_REF" == refs/tags/v* ]]; then
39-
VERSION=${GITHUB_REF#refs/tags/v}
38+
if [[ "$GITHUB_REF" == refs/tags/* ]]; then
39+
VERSION=${GITHUB_REF#refs/tags/}
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else
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VERSION="0.0.0-latest"
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fi

‎.github/workflows/lint.yml‎

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@@ -3,7 +3,6 @@ name: Lint
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on:
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push:
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pull_request:
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workflow_dispatch:
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jobs:
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ruff:

‎README.md‎

Lines changed: 14 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -150,11 +150,24 @@ Yes. Set <code>s3.host</code> to your endpoint.
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<details>
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<summary><strong>Presigned URLs?</strong></summary>
153-
GET works. PUT/POST don't — the proxy encrypts the body which invalidates the pre-signed signature.
153+
Yes. The proxy verifies the presigned signature, then makes its own authenticated request to S3.
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</details>
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156156
---
157157

158+
## Roadmap
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160+
- [ ] Key rotation (re-encrypt objects with a new master key)
161+
- [ ] Multiple AWS credential pairs (per-client auth)
162+
- [ ] Per-bucket / per-prefix encryption keys
163+
- [ ] S3 Select passthrough
164+
- [ ] Ceph S3 compatibility > 80%
165+
- [ ] Batch re-encryption CLI tool
166+
- [ ] Audit logging (who accessed what, when)
167+
- [ ] Web dashboard for key & upload status
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169+
---
170+
158171
## License
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160173
MIT

‎chart/Chart.yaml‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -2,8 +2,8 @@ apiVersion: v2
22
name: s3proxy-python
33
description: Transparent S3 encryption proxy with AES-256-GCM
44
type: application
5-
version: 0.1.0
6-
appVersion: "0.1.0"
5+
version: 2026.2.0
6+
appVersion: "2026.2.0"
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dependencies:
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- name: redis-ha

‎e2e/s3-compatibility/templates/s3-tests-runner-job.yaml‎

Lines changed: 9 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -91,6 +91,10 @@ spec:
9191
# - PartsCount: advanced multipart feature not supported
9292
# - Extended headers: rgw-specific headers
9393
# - return_data: requires GetObjectAcl which is delegated
94+
# - put_object_current: versioning-dependent conditional PUT
95+
# - multipart_copy_special_names: SigV4 mismatch with URL-encoded special chars
96+
# - delimiter_percentage, delimiter_prefix_ends_with_delimiter,
97+
# delimiter_prefix_underscore, delimiter_unreadable: MinIO NextMarker quirks
9498
# Note: Conditional headers (if*) are only implemented for GET, not PUT/complete_multipart
9599
EXCLUDE_PATTERN="acl or policy or versioning or version or anon or anonymous or public or \
96100
checksum or crc32 or sha256 or sha1 or object_lock or retention or legal_hold or \
@@ -102,7 +106,11 @@ spec:
102106
upload_empty or size_too_small or missing_part or incorrect_etag or \
103107
get_part or extended or return_data or \
104108
put_object_ifmatch or put_object_ifnonmatch or put_object_if_match or put_object_if_none or \
105-
multipart_put_object_if or multipart_put_current"
109+
multipart_put_object_if or multipart_put_current or \
110+
put_object_current or \
111+
multipart_copy_special_names or \
112+
delimiter_percentage or delimiter_prefix_ends_with_delimiter or \
113+
delimiter_prefix_underscore or delimiter_unreadable"
106114
107115
TEST_PATTERN="((test_bucket_list) or \
108116
(test_bucket_create) or \

‎pyproject.toml‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
[project]
22
name = "s3proxy"
3-
version = "0.1.0"
3+
version = "2026.2.0"
44
description = "Transparent S3 encryption proxy with AES-256-GCM"
55
keywords = [
66
"s3",

‎s3proxy/client/s3.py‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -293,7 +293,7 @@ async def copy_object(
293293
"CopySource": copy_source,
294294
"MetadataDirective": metadata_directive,
295295
}
296-
if metadata and metadata_directive == "REPLACE":
296+
if metadata is not None and metadata_directive == "REPLACE":
297297
kwargs["Metadata"] = metadata
298298
if content_type:
299299
kwargs["ContentType"] = content_type

‎s3proxy/handlers/base.py‎

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -124,7 +124,9 @@ def _parse_copy_source_range(
124124
start, end = map(int, range_str.split("-"))
125125
except (ValueError, TypeError):
126126
raise S3Error.invalid_range("Invalid copy source range format")
127-
return start, end
127+
if start > end or start >= total_size:
128+
raise S3Error.invalid_range("Range not satisfiable")
129+
return start, min(end, total_size - 1)
128130

129131
def _get_effective_etag(self, metadata: dict, fallback_etag: str) -> str:
130132
"""Return client-etag for encrypted objects, S3 etag otherwise."""

‎s3proxy/handlers/objects/get.py‎

Lines changed: 18 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -58,12 +58,26 @@ async def handle_get_object(self, request: Request, creds: S3Credentials) -> Res
5858
return cond_response
5959

6060
if meta := await load_multipart_metadata(client, bucket, key):
61-
return await self._get_multipart(
61+
response = await self._get_multipart(
6262
client, bucket, key, meta, range_header, last_modified, creds
6363
)
64-
return await self._get_single(
65-
client, bucket, key, range_header, head_resp, last_modified
66-
)
64+
else:
65+
response = await self._get_single(
66+
client, bucket, key, range_header, head_resp, last_modified
67+
)
68+
69+
# Add ETag header
70+
response.headers["ETag"] = f'"{effective_etag}"'
71+
72+
# Add user metadata (x-amz-meta-*), excluding internal keys
73+
internal_keys = {
74+
self.settings.dektag_name.lower(), "client-etag", "plaintext-size",
75+
}
76+
for k, v in metadata.items():
77+
if k.lower() not in internal_keys:
78+
response.headers[f"x-amz-meta-{k}"] = v
79+
80+
return response
6781
except ClientError as e:
6882
self._raise_s3_error(e, bucket, key)
6983

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