TapTap/FastSync
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 2 Wiki Activity

Merge branch 'feat/parity-codecs' into feat/parity-completion

Browse Source 
# Conflicts:
#	src/shared/checksum.h
#	src/shared/config.h
#	tests/integration/test_fault_injection.py
#	tests/integration/test_preflight.py
#	tests/test_client_cli.c
#	tests/test_config.c
#	tests/test_fuzz_smoke.c
This commit is contained in:
TapTap
2026-09-16 23:49:41 +02:00
parent 9dd5288381 76a81f1684
commit 125921c11b
21 changed files with 1500 additions and 195 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/shared/checksum.h
+31 -15
View File
@@ -8,25 +8,35 @@
/* Whole-file content-digest algorithms selectable with --checksum-choice and
* seeded with --checksum-seed. The ids are the values actually placed on the
* wire (config frame), so they must be kept stable and validated on receive.
* CHECKSUM_ALGO_XXH64 == 0 is the default and is byte-for-byte what FastSync
* computed before these options existed (xxHash64 with seed 0). The set mirrors
* the algorithms rsync 3.4.1 can be built with; the ones FastSync does not
* implement (md4, sha1, none) are rejected by name at parse time. */
* CHECKSUM_ALGO_XXH64 == 0 is the historical FastSync default and its numeric
* value is preserved. The full set mirrors the algorithms rsync 3.4.1 can be
* built with; every one of them is implemented here. */
typedef enum {
CHECKSUM_ALGO_XXH64 = 0,
CHECKSUM_ALGO_MD5 = 1,
CHECKSUM_ALGO_XXH3 = 2,
CHECKSUM_ALGO_XXH128 = 3
CHECKSUM_ALGO_XXH128 = 3,
CHECKSUM_ALGO_MD4 = 4,
CHECKSUM_ALGO_SHA1 = 5,
CHECKSUM_ALGO_NONE = 6
} ChecksumAlgo;
/* xxh128 digest is 16 bytes, the longest supported. */
#define CHECKSUM_MAX_DIGEST_LEN 16
/* FastSync's negotiated default (rsync 3.4.1 auto-negotiates xxh128 first).
* The wire default for Config->checksum_algo is this value. */
#define CHECKSUM_ALGO_DEFAULT CHECKSUM_ALGO_XXH128
/* sha1 digest is 20 bytes, the longest supported. */
#define CHECKSUM_MAX_DIGEST_LEN 20
/* Compute the whole-file digest of the first `size` bytes of `data`.
*
* - CHECKSUM_ALGO_XXH64: xxHash64(data, size, seed) (full 64-bit seed).
* - CHECKSUM_ALGO_MD5: md5(data, size) via OpenSSL EVP.
* md5 has no seed, so `seed` is ignored (documented).
* - CHECKSUM_ALGO_XXH3: XXH3_64bits_withSeed(data, size, seed).
* - CHECKSUM_ALGO_XXH128: XXH3_128bits_withSeed(data, size, seed).
* - CHECKSUM_ALGO_MD5: md5(data, size) via OpenSSL EVP (seed ignored).
* - CHECKSUM_ALGO_MD4: md4(data, size), self-contained RFC 1320 (seed ignored).
* - CHECKSUM_ALGO_SHA1: sha1(data, size) via OpenSSL EVP (seed ignored).
* - CHECKSUM_ALGO_NONE: no digest; *out_len is 0 and nothing is written.
* - `size == 0` hashes the empty input (plus its seed), not a NULL input.
*
* Writes up to `out_capacity` bytes into `out`, storing the digest length in
@@ -41,10 +51,10 @@ bool checksum_digest(ChecksumAlgo algo, uint64_t seed, const void* data, size_t
bool checksum_digest_file(ChecksumAlgo algo, uint64_t seed, const char* path, uint8_t* out,
size_t out_capacity, size_t* out_len);
/* Resolve a --checksum-choice string (case-insensitive) to an algorithm id. * Accepts
* "xxh64"/"xxhash", "xxh3", "xxh128" and "md5". "auto", rsync's default automatic choice, is
* resolved to the default by the caller (it is not a distinct algorithm here). Returns -1 for any
* name FastSync does not implement (md4/sha1/none included). */
/* Resolve a --checksum-choice string (case-insensitive) to an algorithm id.
* Accepts "xxh64"/"xxhash", "xxh3", "xxh128", "md5", "md4", "sha1", "none".
* "auto" is not an algorithm here; the caller resolves it to the negotiated
* default. Returns -1 for any unrecognized name. */
int checksum_algo_from_name(const char* name);
/* Canonical name of an algorithm (used in CLI error messages). */
@@ -53,7 +63,13 @@ const char* checksum_algo_name(ChecksumAlgo algo);
/* True when `algo` is a supported id (used by config receive validation). */
bool checksum_algo_valid(int algo);
/* Digest length in bytes for an algorithm (xxh64/xxh3 = 8, md5/xxh128 = 16). */
/* Digest length in bytes for an algorithm (xxh64/xxh3 = 8,
* md5/md4/xxh128 = 16, sha1 = 20, none = 0). */
uint8_t checksum_digest_len(ChecksumAlgo algo);
#endif /* CHECKSUM_H */
/* Pick the first algorithm from FastSync's compiled-in preference list that is
* supported on this build (rsync 3.4.1's `--version` order:
* xxh128 xxh3 xxh64 md5 md4 sha1 none). Used to resolve "auto". */
ChecksumAlgo checksum_negotiate_default(void);
#endif /* CHECKSUM_H */