Files
s3/weed/s3api/s3lifecycle/rule_hash.go
zooqueen dd74d3e6d6 Replace AGPL MinIO fork with Apache-2.0 SeaweedFS fork; rebrand CLI weed->s3
hanzoai/s3 was an AGPL-3.0 MinIO fork whose network-copyleft blocks embedding
and reselling as a managed service. Replace it wholesale with a fork of
SeaweedFS (github.com/seaweedfs/seaweedfs, Apache-2.0, Go) which ships a
built-in S3 gateway + Filer.

- License: AGPL-3.0 -> Apache-2.0 (upstream LICENSE kept verbatim, incl.
  "Copyright 2025 Chris Lu"); NOTICE added crediting SeaweedFS. No AGPL/BUSL/
  SSPL/GPL or enterprise ("ee") files remain.
- Module: go.mod path set to github.com/hanzoai/s3 with a self-replace
  (replace github.com/seaweedfs/seaweedfs => ./) so the ~1800 internal Go files
  keep their upstream import paths with zero churn. Internal identifiers and
  import paths are intentionally NOT renamed.
- CLI rebrand: the binary is built as `s3` (was `weed`); root usage, per-command
  help/usage/flag strings, shell autocomplete program name, and the product name
  in CLI output now read "Hanzo S3" / `s3`. Users never see `weed`.
  (e.g. `s3 server`, `s3 filer`, `s3 master`, `s3 volume`, `s3 s3`, `s3 mount`.)
- Build: `make` (or `go build -o s3 ./weed`) builds the `s3` binary green;
  `cmd/weed-db` and `cmd/weed-sql` also build; `go vet ./weed/command/` clean.
- README/LLM.md rewritten for Hanzo S3; AGENTS.md/CLAUDE.md symlinks preserved.
- Dropped a 33MB prebuilt Mach-O `stress` binary upstream had committed; `.gitignore`
  updated to ignore the `s3` build output.
2026-06-18 23:41:25 -07:00

105 lines
2.8 KiB
Go

package s3lifecycle
import (
"crypto/sha256"
"encoding/binary"
"sort"
"time"
)
// RuleHash returns the first 8 bytes of sha256 over a length-prefixed
// canonical encoding. Stable across tag-key reorder, ID renames, and Status
// flips. Prefix is hashed verbatim — "logs" and "logs/" match different
// objects, so they must hash differently. Length prefixing prevents a
// forged value (e.g. a tag containing "=") from colliding with a legitimate
// tuple.
func RuleHash(rule *Rule) [8]byte {
if rule == nil {
var zero [8]byte
return zero
}
h := sha256.New()
writeBytes(h, fieldPrefix, []byte(rule.Prefix))
tagKeys := make([]string, 0, len(rule.FilterTags))
for k := range rule.FilterTags {
tagKeys = append(tagKeys, k)
}
sort.Strings(tagKeys)
writeUvarint(h, fieldTagCount, uint64(len(tagKeys)))
for _, k := range tagKeys {
writeBytes(h, fieldTagKey, []byte(k))
writeBytes(h, fieldTagValue, []byte(rule.FilterTags[k]))
}
writeInt64(h, fieldSizeGT, rule.FilterSizeGreaterThan)
writeInt64(h, fieldSizeLT, rule.FilterSizeLessThan)
writeInt64(h, fieldExpDays, int64(rule.ExpirationDays))
writeBytes(h, fieldExpDate, []byte(canonicalTime(rule.ExpirationDate)))
writeBool(h, fieldExpDeleteMarker, rule.ExpiredObjectDeleteMarker)
writeInt64(h, fieldNoncurDays, int64(rule.NoncurrentVersionExpirationDays))
writeInt64(h, fieldNoncurKeep, int64(rule.NewerNoncurrentVersions))
writeInt64(h, fieldMPUDays, int64(rule.AbortMPUDaysAfterInitiation))
sum := h.Sum(nil)
var out [8]byte
copy(out[:], sum[:8])
return out
}
// Field tags namespace each scalar so a forged string can't substitute for
// another in a way that hashes the same.
const (
fieldPrefix byte = 0x01
fieldTagCount byte = 0x02
fieldTagKey byte = 0x03
fieldTagValue byte = 0x04
fieldSizeGT byte = 0x05
fieldSizeLT byte = 0x06
fieldExpDays byte = 0x10
fieldExpDate byte = 0x11
fieldExpDeleteMarker byte = 0x12
fieldNoncurDays byte = 0x13
fieldNoncurKeep byte = 0x14
fieldMPUDays byte = 0x15
)
type byteSink interface {
Write(p []byte) (n int, err error)
}
func writeBytes(w byteSink, tag byte, b []byte) {
var lenbuf [binary.MaxVarintLen64]byte
n := binary.PutUvarint(lenbuf[:], uint64(len(b)))
w.Write([]byte{tag})
w.Write(lenbuf[:n])
w.Write(b)
}
func writeUvarint(w byteSink, tag byte, v uint64) {
var buf [binary.MaxVarintLen64]byte
n := binary.PutUvarint(buf[:], v)
w.Write([]byte{tag})
w.Write(buf[:n])
}
func writeInt64(w byteSink, tag byte, v int64) {
var buf [binary.MaxVarintLen64]byte
n := binary.PutVarint(buf[:], v)
w.Write([]byte{tag})
w.Write(buf[:n])
}
func writeBool(w byteSink, tag byte, b bool) {
v := byte(0)
if b {
v = 1
}
w.Write([]byte{tag, v})
}
func canonicalTime(t time.Time) string {
if t.IsZero() {
return ""
}
return t.UTC().Format(time.RFC3339Nano)
}