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| author | Ludovic Courtès <ludo@gnu.org> | 2023-01-09 16:48:01 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2023-01-09 17:40:54 +0100 |
| commit | 407175a1d0e29f45639e7f28a531b3981cd20085 (patch) | |
| tree | 4b29a28466d8128a4b89b208735dfdf181d88364 /nix/libutil | |
| parent | 5d24e57a611b43ff68700379338b899f62d198cc (diff) | |
daemon: Improve error message for wrong hash sizes.
* nix/libutil/hash.cc (parseHash): Show the hash algorithm name and
expected size in the error message.
* tests/derivations.scm ("fixed-output derivation, invalid hash size"):
New test.
Diffstat (limited to 'nix/libutil')
| -rw-r--r-- | nix/libutil/hash.cc | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/nix/libutil/hash.cc b/nix/libutil/hash.cc index 9ba604eb85..9b83ffcdd9 100644 --- a/nix/libutil/hash.cc +++ b/nix/libutil/hash.cc @@ -76,8 +76,11 @@ string printHash(const Hash & hash) Hash parseHash(HashType ht, const string & s) { Hash hash(ht); - if (s.length() != hash.hashSize * 2) - throw Error(format("invalid hash `%1%'") % s); + if (s.length() != hash.hashSize * 2) { + string algo = gcry_md_algo_name(ht); + throw Error(format("invalid %1% hash '%2%' (%3% bytes but expected %4%)") + % algo % s % (s.length() / 2) % hash.hashSize); + } for (unsigned int i = 0; i < hash.hashSize; i++) { string s2(s, i * 2, 2); if (!isxdigit(s2[0]) || !isxdigit(s2[1])) |