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mfer/mfer/mf.proto
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Refuse a path with a . segment (closes #208)
ValidatePath refused a .. segment but accepted a . segment, so a
manifest could list ./a.txt. check then verified a.txt and also
reported it as an extra file, and one file could be listed twice under
two spellings despite the listed-once rule. A . segment is now refused
when a manifest is written and when it is loaded, and the Path Rules
in docs/FORMAT.md and the path comment in mfer/mf.proto list it.

Two fetch tests listed ./ paths to check name clashes; such manifests
can no longer be built, so those cases are removed.

Model: opus-5-5
2026-10-14 00:01:12 +02:00

92 lines
2.5 KiB
Protocol Buffer

syntax = "proto3";
option go_package = "sneak.berlin/go/mfer/mfer";
message Timestamp {
int64 seconds = 1;
int32 nanos = 2;
}
message MFFileOuter {
enum Version {
VERSION_NONE = 0;
VERSION_ONE = 1; // only one for now
}
// required mffile root attributes 1xx
Version version = 101;
enum CompressionType {
COMPRESSION_NONE = 0;
COMPRESSION_ZSTD = 1;
}
CompressionType compressionType = 102;
// these are used solely to detect corruption/truncation
// and not for cryptographic integrity.
int64 size = 103;
bytes sha256 = 104;
// uuid must match the uuid in the inner message
bytes uuid = 105;
bytes innerMessage = 199;
// 2xx for optional manifest root attributes
// one OpenPGP signature, armored or binary, over the canonical string
// ZNAVSRFG-<uuid>-<sha256 as a multihash>, with the uuid as 32
// lower-case hex digits and no hyphens, and the multihash in lower-case
// hex (see docs/FORMAT.md). A signature is never stored anywhere else.
optional bytes signature = 201;
// fingerprint of the signing primary key, in upper-case hex
optional bytes signer = 202;
// OpenPGP public key of the signer, one primary key, armored or binary
optional bytes signingPubKey = 203;
}
message MFFilePath {
// required attributes:
// Path invariants: must be valid UTF-8, use forward slashes only,
// be relative (no leading /), contain no ".." or "." segments, and
// no empty segments (no "//").
string path = 1;
int64 size = 2;
// gotta have at least one:
repeated MFFileChecksum hashes = 3;
// optional per-file metadata
optional string mimeType = 301;
optional Timestamp mtime = 302;
optional Timestamp ctime = 303;
// permission bits, at most 0777; 0 when not recorded
uint32 mode = 304;
}
message MFFileChecksum {
// 1.0 golang implementation must write a multihash here
// it's ok to only ever use/verify sha256 multihash
bytes multiHash = 1;
}
message MFFile {
enum Version {
VERSION_NONE = 0;
VERSION_ONE = 1; // only one for now
}
Version version = 100;
// required manifest attributes:
repeated MFFilePath files = 101;
// uuid is a random v4 UUID generated when creating the manifest
// used as part of the signature to prevent replay attacks
bytes uuid = 102;
// optional manifest attributes 2xx:
optional Timestamp createdAt = 201;
}