Files
s3/weed/s3api/s3api_auth.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

106 lines
2.8 KiB
Go

package s3api
import (
"net/http"
"strings"
)
// AWS Signature Version '4' constants.
const (
signV4Algorithm = "AWS4-HMAC-SHA256"
signV2Algorithm = "AWS"
iso8601Format = "20060102T150405Z"
yyyymmdd = "20060102"
)
// Verify if request has JWT.
func isRequestJWT(r *http.Request) bool {
return strings.HasPrefix(r.Header.Get("Authorization"), "Bearer")
}
// Verify if request has AWS Signature Version '4'.
func isRequestSignatureV4(r *http.Request) bool {
return strings.HasPrefix(r.Header.Get("Authorization"), signV4Algorithm)
}
// Verify if request has AWS Signature Version '2'.
func isRequestSignatureV2(r *http.Request) bool {
return !strings.HasPrefix(r.Header.Get("Authorization"), signV4Algorithm) &&
strings.HasPrefix(r.Header.Get("Authorization"), signV2Algorithm)
}
// Verify if request has AWS PreSign Version '4'.
func isRequestPresignedSignatureV4(r *http.Request) bool {
_, ok := r.URL.Query()["X-Amz-Credential"]
return ok
}
// Verify request has AWS PreSign Version '2'.
func isRequestPresignedSignatureV2(r *http.Request) bool {
_, ok := r.URL.Query()["AWSAccessKeyId"]
return ok
}
// Verify if the request has AWS Streaming Signature Version '4'. This is only valid for 'PUT' operation.
// Supports both with and without trailer variants:
// - STREAMING-AWS4-HMAC-SHA256-PAYLOAD (original)
// - STREAMING-AWS4-HMAC-SHA256-PAYLOAD-TRAILER (with trailing checksums)
func isRequestSignStreamingV4(r *http.Request) bool {
if r.Method != http.MethodPut {
return false
}
contentSha256 := r.Header.Get("x-amz-content-sha256")
return contentSha256 == streamingContentSHA256 || contentSha256 == streamingContentSHA256Trailer
}
func isRequestUnsignedStreaming(r *http.Request) bool {
if r.Method != http.MethodPut {
return false
}
return r.Header.Get("x-amz-content-sha256") == streamingUnsignedPayload
}
// Authorization type.
type authType int
// List of all supported auth types.
const (
authTypeUnknown authType = iota
authTypeAnonymous
authTypePresigned
authTypePresignedV2
authTypePostPolicy
authTypeStreamingSigned
authTypeStreamingUnsigned
authTypeSigned
authTypeSignedV2
authTypeJWT
)
// Get request authentication type.
func getRequestAuthType(r *http.Request) authType {
var authType authType
if isRequestSignatureV2(r) {
authType = authTypeSignedV2
} else if isRequestPresignedSignatureV2(r) {
authType = authTypePresignedV2
} else if isRequestSignStreamingV4(r) {
authType = authTypeStreamingSigned
} else if isRequestUnsignedStreaming(r) {
authType = authTypeStreamingUnsigned
} else if isRequestSignatureV4(r) {
authType = authTypeSigned
} else if isRequestPresignedSignatureV4(r) {
authType = authTypePresigned
} else if isRequestJWT(r) {
authType = authTypeJWT
} else if _, ok := r.Header["Authorization"]; !ok {
authType = authTypeAnonymous
} else {
authType = authTypeUnknown
}
return authType
}