Commit Graph
6 Commits
Author SHA1 Message Date
Chris Lu c4f0b12a9a s3: lazy, bounded, entry-free per-bucket caches (#10213)
* s3: stop warming every bucket's config at startup

Listing all buckets in BucketRegistry.init() made S3 gateway startup
O(buckets) and pinned every bucket's metadata and config resident, which
does not scale past a few hundred thousand buckets. Both caches already
have lazy miss paths, so load on first access instead and let the
metadata subscription refresh only entries already resident; cold
buckets cost one filer round-trip on their first request.

* s3: bound the per-bucket caches with LRU eviction

The bucket config cache, bucket registry, and their negative caches were
plain maps that only ever grew: the config cache TTL made Get miss but
never evicted the entry, and the not-found sets grew on every probe of a
nonexistent bucket name. Cap all four at 65536 entries with LRU eviction
so a gateway keeps its hot working set and evicted buckets reload from
the filer on next access.

* s3: cache parsed bucket config instead of the full filer entry

Each cached BucketConfig retained the whole bucket entry (extended
attribute map plus raw content bytes) alongside the fields parsed from
it, roughly doubling per-bucket cache cost and keeping data the read
path never looks at. Parse everything up front in
newBucketConfigFromEntry - now also the creator identity, tags,
encryption config, and stored lifecycle XML - and drop the entry.

updateBucketConfig now reads the entry fresh from the filer and diffs
the mapped extended attributes against it, so the patch is computed
against current state instead of a cached copy; the config clone
helpers that existed for that path go away.

* s3: dedup cold bucket-registry loads per bucket

The registry's notFound lock doubled as the load serializer, holding one
global mutex across the filer round-trip so first-touch requests for
different buckets queued behind each other; the cache fill also happened
after the lock was released, so two concurrent misses for the same
bucket could both reach the filer. Replace it with a singleflight per
bucket that fills the cache inside the flight: different buckets load
concurrently, the same bucket loads once.
2026-07-02 21:11:34 -07:00
Chris Lu 0345658ea8 [s3] validate indirect filer path inputs (#9931)
* s3: validate indirect filer path inputs

* s3: avoid query parsing on common request path

* filer: scope copy/move source against JWT AllowedPrefixes

maybeCheckJwtAuthorization only checked r.URL.Path, but copy and move read
their source from the cp.from / mv.from query params. A prefix-restricted
token could copy or move data out of a subtree it cannot otherwise reach.
Check every path the request touches, reusing pathHasComponentPrefix so
`..` in the source is collapsed before the prefix match.

* s3: confine iceberg CreateTable location to the catalog bucket

CreateTable derived the metadata bucket and path from the client-supplied
req.Location / req.Name and wrote there directly, so a caller scoped to one
table bucket could place metadata in another bucket (and path.Join collapsed
any `..`). Require the parsed bucket to equal the request's catalog bucket
and reject traversal segments in the table path.

* webdav: clean client path before subFolder confinement

wrappedFs concatenated subFolder + name before the underlying FileSystem
ran path.Clean, so `..` in the request path or COPY/MOVE Destination
resolved across the FilerRootPath confinement boundary. Clean the name as a
rooted path first so traversal segments collapse below subFolder. Only the
non-default -filer.path (non-empty subFolder) setup was affected.

* filer: enforce read-only rule on real write path with destination header

The x-seaweedfs-destination header overrides the path used for storage-rule
matching while the entry is written at r.URL.Path, letting a caller select a
writable rule for a read-only target. When the header is present, also check
the read-only/quota rule against the actual write path.
2026-06-11 21:56:16 -07:00
Chris Lu 0bddc2652e fix(s3): propagate validated POST form fields to upload headers (#9123)
* fix(s3): propagate validated POST form fields to upload headers

POST Object form fields like acl, Content-Encoding, x-amz-storage-class,
x-amz-tagging, and x-amz-server-side-encryption were validated against
the POST policy but never forwarded to the underlying PUT, so the
validated values had no effect. Forward all non-reserved x-amz-* fields
plus acl (as x-amz-acl) and Content-Encoding. Reserved POST policy
mechanism fields (Policy, Signature, Key, etc.) are still excluded.

* fix(s3): also forward Content-Language from POST form to upload headers

AWS S3 POST Object supports Content-Language; add it to the set of
content headers forwarded by applyPostPolicyFormHeaders alongside
Cache-Control, Expires, Content-Disposition, and Content-Encoding.
Addresses gemini-code-assist review on PR #9123.

* refactor(s3): only look up form value in branches that use it

applyPostPolicyFormHeaders previously called formValues.Get(k) for every
form field, including fields that fall through the switch (non-reserved
fields that are neither Acl, a forwarded content header, nor X-Amz-*).
Move the lookup inside the switch cases that actually use it.
2026-04-17 14:55:06 -07:00
Chris Lu 2da24cc230 fix(s3): return 403 on POST policy violation instead of 307 redirect (#9122)
* fix(s3): return 403 on POST policy violation instead of 307 redirect

CheckPostPolicy failures previously responded with HTTP 307 Temporary
Redirect to the request URL, which causes clients to re-POST and
obscures the failure. Return 403 AccessDenied so the client surfaces
the error.

* test(s3): exercise PostPolicyBucketHandler end-to-end for 403 mapping

Replace the shallow ErrAccessDenied tautology test with one that builds
a signed POST multipart request whose policy conditions cannot be
satisfied, calls PostPolicyBucketHandler directly, and asserts HTTP 403
with no Location redirect header. Addresses gemini-code-assist review on
PR #9122.

* fix(s3): surface POST policy failure reason in AccessDenied response

Add s3err.WriteErrorResponseWithMessage so a caller can keep the
standard error code mapping while providing a specific Message. Use it
from PostPolicyBucketHandler so the XML body carries the CheckPostPolicy
error (e.g. which condition failed or that the policy expired) rather
than the generic "Access Denied." description. Addresses gemini-code-
assist review on PR #9122.

* refactor(s3err): delegate WriteErrorResponse to WriteErrorResponseWithMessage

The two helpers shared every line except the Message override. Fold
WriteErrorResponse into a one-line delegation that passes an empty
message, so the request-id/mux/apiError logic lives in exactly one
place. Addresses gemini-code-assist review on PR #9122.
2026-04-17 14:54:58 -07:00
Chris Lu 2f6aa98221 Refactor: Replace removeDuplicateSlashes with NormalizeObjectKey (#7873)
* Replace removeDuplicateSlashes with NormalizeObjectKey

Use s3_constants.NormalizeObjectKey instead of removeDuplicateSlashes in most places
for consistency. NormalizeObjectKey handles both duplicate slash removal and ensures
the path starts with '/', providing more complete normalization.

* Fix double slash issues after NormalizeObjectKey

After using NormalizeObjectKey, object keys have a leading '/'. This commit ensures:
- getVersionedObjectDir strips leading slash before concatenation
- getEntry calls receive names without leading slash
- String concatenation with '/' doesn't create '//' paths

This prevents path construction errors like:
  /buckets/bucket//object  (wrong)
  /buckets/bucket/object   (correct)

* ensure object key leading "/"

* fix compilation

* fix: Strip leading slash from object keys in S3 API responses

After introducing NormalizeObjectKey, all internal object keys have a
leading slash. However, S3 API responses must return keys without
leading slashes to match AWS S3 behavior.

Fixed in three functions:
- addVersion: Strip slash for version list entries
- processRegularFile: Strip slash for regular file entries
- processExplicitDirectory: Strip slash for directory entries

This ensures ListObjectVersions and similar APIs return keys like
'bar' instead of '/bar', matching S3 API specifications.

* fix: Normalize keyMarker for consistent pagination comparison

The S3 API provides keyMarker without a leading slash (e.g., 'object-001'),
but after introducing NormalizeObjectKey, all internal object keys have
leading slashes (e.g., '/object-001').

When comparing keyMarker < normalizedObjectKey in shouldSkipObjectForMarker,
the ASCII value of '/' (47) is less than 'o' (111), causing all objects
to be incorrectly skipped during pagination. This resulted in page 2 and
beyond returning 0 results.

Fix: Normalize the keyMarker when creating versionCollector so comparisons
work correctly with normalized object keys.

Fixes pagination tests:
- TestVersioningPaginationOver1000Versions
- TestVersioningPaginationMultipleObjectsManyVersions

* refactor: Change NormalizeObjectKey to return keys without leading slash

BREAKING STRATEGY CHANGE:
Previously, NormalizeObjectKey added a leading slash to all object keys,
which required stripping it when returning keys to S3 API clients and
caused complexity in marker normalization for pagination.

NEW STRATEGY:
- NormalizeObjectKey now returns keys WITHOUT leading slash (e.g., 'foo/bar' not '/foo/bar')
- This matches the S3 API format directly
- All path concatenations now explicitly add '/' between bucket and object
- No need to strip slashes in responses or normalize markers

Changes:
1. Modified NormalizeObjectKey to strip leading slash instead of adding it
2. Fixed all path concatenations to use:
   - BucketsPath + '/' + bucket + '/' + object
   instead of:
   - BucketsPath + '/' + bucket + object
3. Reverted response key stripping in:
   - addVersion()
   - processRegularFile()
   - processExplicitDirectory()
4. Reverted keyMarker normalization in findVersionsRecursively()
5. Updated matchesPrefixFilter() to work with keys without leading slash
6. Fixed paths in handlers:
   - s3api_object_handlers.go (GetObject, HeadObject, cacheRemoteObjectForStreaming)
   - s3api_object_handlers_postpolicy.go
   - s3api_object_handlers_tagging.go
   - s3api_object_handlers_acl.go
   - s3api_version_id.go (getVersionedObjectDir, getVersionIdFormat)
   - s3api_object_versioning.go (getObjectVersionList, updateLatestVersionAfterDeletion)

All versioning tests pass including pagination stress tests.

* adjust format

* Update post policy tests to match new NormalizeObjectKey behavior

- Update TestPostPolicyKeyNormalization to expect keys without leading slashes
- Update TestNormalizeObjectKey to expect keys without leading slashes
- Update TestPostPolicyFilenameSubstitution to expect keys without leading slashes
- Update path construction in tests to use new pattern: BucketsPath + '/' + bucket + '/' + object

* Fix ListObjectVersions prefix filtering

Remove leading slash addition to prefix parameter to allow correct filtering
of .versions directories when listing object versions with a specific prefix.

The prefix parameter should match entry paths relative to bucket root.
Adding a leading slash was breaking the prefix filter for paginated requests.

Fixes pagination issue where second page returned 0 versions instead of
continuing with remaining versions.

* no leading slash

* Fix urlEscapeObject to add leading slash for filer paths

NormalizeObjectKey now returns keys without leading slashes to match S3 API format.
However, urlEscapeObject is used for filer paths which require leading slashes.
Add leading slash back after normalization to ensure filer paths are correct.

Fixes TestS3ApiServer_toFilerPath test failures.

* adjust tests

* normalize

* Fix: Normalize prefixes and markers in LIST operations using NormalizeObjectKey

Ensure consistent key normalization across all S3 operations (GET, PUT, LIST).
Previously, LIST operations were not applying the same normalization rules
(handling backslashes, duplicate slashes, leading slashes) as GET/PUT operations.

Changes:
- Updated normalizePrefixMarker() to call NormalizeObjectKey for both prefix and marker
- This ensures prefixes with leading slashes, backslashes, or duplicate slashes are
  handled consistently with how object keys are normalized
- Fixes Parquet test failures where pads.write_dataset creates implicit directory
  structures that couldn't be discovered by subsequent LIST operations
- Added TestPrefixNormalizationInList and TestListPrefixConsistency tests

All existing LIST tests continue to pass with the normalization improvements.

* Add debugging logging to LIST operations to track prefix normalization

* Fix: Remove leading slash addition from GetPrefix to work with NormalizeObjectKey

The NormalizeObjectKey function removes leading slashes to match S3 API format
(e.g., 'foo/bar' not '/foo/bar'). However, GetPrefix was adding a leading slash
back, which caused LIST operations to fail with incorrect path handling.

Now GetPrefix only normalizes duplicate slashes without adding a leading slash,
which allows NormalizeObjectKey changes to work correctly for S3 LIST operations.

All Parquet integration tests now pass (20/20).

* Fix: Handle object paths without leading slash in checkDirectoryObject

NormalizeObjectKey() removes the leading slash to match S3 API format.
However, checkDirectoryObject() was assuming the object path has a leading
slash when processing directory markers (paths ending with '/').

Now we ensure the object has a leading slash before processing it for
filer operations.

Fixes implicit directory marker test (explicit_dir/) while keeping
Parquet integration tests passing (20/20).

All tests pass:
- Implicit directory tests: 6/6
- Parquet integration tests: 20/20

* Fix: Handle explicit directory markers with trailing slashes

Explicit directory markers created with put_object(Key='dir/', ...) are stored
in the filer with the trailing slash as part of the name. The checkDirectoryObject()
function now checks for both:
1. Explicit directories: lookup with trailing slash preserved (e.g., 'explicit_dir/')
2. Implicit directories: lookup without trailing slash (e.g., 'implicit_dir')

This ensures both types of directory markers are properly recognized.

All tests pass:
- Implicit directory tests: 6/6 (including explicit directory marker test)
- Parquet integration tests: 20/20

* Fix: Preserve trailing slash in NormalizeObjectKey

NormalizeObjectKey now preserves trailing slashes when normalizing object keys.
This is important for explicit directory markers like 'explicit_dir/' which rely
on the trailing slash to be recognized as directory objects.

The normalization process:
1. Notes if trailing slash was present
2. Removes duplicate slashes and converts backslashes
3. Removes leading slash for S3 API format
4. Restores trailing slash if it was in the original

This ensures explicit directory markers created with put_object(Key='dir/', ...)
are properly normalized and can be looked up by their exact name.

All tests pass:
- Implicit directory tests: 6/6
- Parquet integration tests: 20/20

* clean object

* Fix: Don't restore trailing slash if result is empty

When normalizing paths that are only slashes (e.g., '///', '/'), the function
should return an empty string, not a single slash. The fix ensures we only
restore the trailing slash if the result is non-empty.

This fixes the 'just_slashes' test case:
- Input: '///'
- Expected: ''
- Previous: '/'
- Fixed: ''

All tests now pass:
- Unit tests: TestNormalizeObjectKey (13/13)
- Implicit directory tests: 6/6
- Parquet integration tests: 20/20

* prefixEndsOnDelimiter

* Update s3api_object_handlers_list.go

* Update s3api_object_handlers_list.go

* handle create directory
2025-12-24 19:07:08 -08:00
Chris Lu de3ecaf0de s3: fix presigned POST upload missing slash between bucket and key (#7714)
* s3: fix presigned POST upload missing slash between bucket and key

When uploading a file using presigned POST (e.g., boto3.generate_presigned_post),
the file was saved with the bucket name and object key concatenated without a
slash (e.g., 'my-bucketfilename' instead of 'my-bucket/filename').

The issue was that PostPolicyBucketHandler retrieved the object key from form
values without ensuring it had a leading slash, unlike GetBucketAndObject()
which normalizes the key.

Fixes #7713

* s3: add tests for presigned POST key normalization

Add comprehensive tests for PostPolicyBucketHandler to ensure:
- Object keys without leading slashes are properly normalized
- ${filename} substitution works correctly with normalization
- Path construction correctly separates bucket and key
- Form value extraction works properly

These tests would have caught the bug fixed in the previous commit
where keys like 'test_image.png' were concatenated with bucket
without a separator, resulting in 'my-buckettest_image.png'.

* s3: create normalizeObjectKey function for robust key normalization

Address review feedback by creating a reusable normalizeObjectKey function
that both adds a leading slash and removes duplicate slashes, aligning with
how other handlers process paths (e.g., toFilerPath uses removeDuplicateSlashes).

The function handles edge cases like:
- Keys without leading slashes (the original bug)
- Keys with duplicate slashes (e.g., 'a//b' -> '/a/b')
- Keys with leading duplicate slashes (e.g., '///a' -> '/a')

Updated tests to use the new function and added TestNormalizeObjectKey
for comprehensive coverage of the new function.

* s3: move NormalizeObjectKey to s3_constants for shared use

Move the NormalizeObjectKey function to the s3_constants package so it can
be reused by:
- GetBucketAndObject() - now normalizes all object keys from URL paths
- GetPrefix() - now normalizes prefix query parameters
- PostPolicyBucketHandler - normalizes keys from form values

This ensures consistent object key normalization across all S3 API handlers,
handling both missing leading slashes and duplicate slashes.

Benefits:
- Single source of truth for key normalization
- GetBucketAndObject now removes duplicate slashes (previously only added leading slash)
- All handlers benefit from the improved normalization automatically
2025-12-10 23:42:58 -08:00