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Always use base-16 for hashed mirror lookups

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In particular, don't use base-64, which we don't support. (We do have
base-32 redirects for hysterical reasons.)

Also, add a test for the hashed mirror feature.
This commit is contained in:
Eelco Dolstra 2017-07-17 13:13:18 +02:00
parent 49304bae81
commit bf6792c0df
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GPG key ID: 8170B4726D7198DE
2 changed files with 15 additions and 1 deletions
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3
src/libstore/builtins.cc
View file

@ -42,7 +42,8 @@ void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
for (auto hashedMirror : settings.hashedMirrors.get())
try {
if (!hasSuffix(hashedMirror, "/")) hashedMirror += '/';
data = fetch(hashedMirror + getAttr("outputHashAlgo") + "/" + getAttr("outputHash"));
auto ht = parseHashType(getAttr("outputHashAlgo"));
data = fetch(hashedMirror + printHashType(ht) + "/" + Hash(getAttr("outputHash"), ht).to_string(Base16, false));
break;
} catch (Error & e) {
debug(e.what());

13
tests/fetchurl.sh
View file

@ -18,6 +18,19 @@ outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file://$(pwd)/fetchurl.sh
cmp $outPath fetchurl.sh
# Test the hashed mirror feature.
clearStore
hash=$(nix hash-file --type sha512 --base64 ./fetchurl.sh)
hash32=$(nix hash-file --type sha512 --base16 ./fetchurl.sh)
mirror=$TMPDIR/hashed-mirror
rm -rf $mirror
mkdir -p $mirror/sha512
ln -s $(pwd)/fetchurl.sh $mirror/sha512/$hash32
outPath=$(nix-build '<nix/fetchurl.nix>' --argstr url file:///no-such-dir/fetchurl.sh --argstr sha512 $hash --no-out-link --option hashed-mirrors "file://$mirror")
# Test unpacking a NAR.
rm -rf $TEST_ROOT/archive
mkdir -p $TEST_ROOT/archive