mirror of
https://github.com/hanzoai/s3.git
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zooqueen
dd74d3e6d6
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.
46 lines
1.8 KiB
Go
46 lines
1.8 KiB
Go
package s3api
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import "github.com/seaweedfs/seaweedfs/weed/glog"
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// calculateIVWithOffset calculates a unique IV by combining a base IV with an offset.
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// This ensures each chunk/part uses a unique IV, preventing CTR mode IV reuse vulnerabilities.
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// Returns the adjusted IV and the number of bytes to skip from the decrypted stream.
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// The skip is needed because CTR mode operates on 16-byte blocks, but the offset may not be block-aligned.
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// This function is shared between SSE-KMS and SSE-S3 implementations for consistency.
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func calculateIVWithOffset(baseIV []byte, offset int64) ([]byte, int) {
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if len(baseIV) != 16 {
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glog.Errorf("Invalid base IV length: expected 16, got %d", len(baseIV))
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return baseIV, 0 // Return original IV as fallback
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}
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// Create a copy of the base IV to avoid modifying the original
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iv := make([]byte, 16)
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copy(iv, baseIV)
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// Calculate the block offset (AES block size is 16 bytes) and intra-block skip
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blockOffset := offset / 16
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skip := int(offset % 16)
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originalBlockOffset := blockOffset
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// Add the block offset to the IV counter (last 8 bytes, big-endian)
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// This matches how AES-CTR mode increments the counter
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// Process from least significant byte (index 15) to most significant byte (index 8)
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carry := uint64(0)
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for i := 15; i >= 8; i-- {
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sum := uint64(iv[i]) + uint64(blockOffset&0xFF) + carry
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iv[i] = byte(sum & 0xFF)
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carry = sum >> 8
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blockOffset = blockOffset >> 8
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// If no more blockOffset bits and no carry, we can stop early
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if blockOffset == 0 && carry == 0 {
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break
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}
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}
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// Single consolidated debug log to avoid performance impact in high-throughput scenarios
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glog.V(4).Infof("calculateIVWithOffset: baseIV=%x, offset=%d, blockOffset=%d, skip=%d, derivedIV=%x",
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baseIV, offset, originalBlockOffset, skip, iv)
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return iv, skip
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}
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