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nix sign-paths: Support binary caches

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This commit is contained in:
Eelco Dolstra 2017-11-14 18:44:05 +01:00
parent d6dbda7004
commit ec5b04862b
No known key found for this signature in database
GPG key ID: 8170B4726D7198DE
3 changed files with 43 additions and 15 deletions
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47
src/libstore/binary-cache-store.cc
View file

@ -73,6 +73,23 @@ Path BinaryCacheStore::narInfoFileFor(const Path & storePath)
return storePathToHash(storePath) + ".narinfo";
}
void BinaryCacheStore::writeNarInfo(ref<NarInfo> narInfo)
{
auto narInfoFile = narInfoFileFor(narInfo->path);
upsertFile(narInfoFile, narInfo->to_string(), "text/x-nix-narinfo");
auto hashPart = storePathToHash(narInfo->path);
{
auto state_(state.lock());
state_->pathInfoCache.upsert(hashPart, std::shared_ptr<NarInfo>(narInfo));
}
if (diskCache)
diskCache->upsertNarInfo(getUri(), hashPart, std::shared_ptr<NarInfo>(narInfo));
}
void BinaryCacheStore::addToStore(const ValidPathInfo & info, const ref<std::string> & nar,
RepairFlag repair, CheckSigsFlag checkSigs, std::shared_ptr<FSAccessor> accessor)
{
@ -89,8 +106,6 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, const ref<std::str
% info.path % ref);
}
auto narInfoFile = narInfoFileFor(info.path);
assert(nar->compare(0, narMagic.size(), narMagic) == 0);
auto narInfo = make_ref<NarInfo>(info);
@ -168,17 +183,7 @@ void BinaryCacheStore::addToStore(const ValidPathInfo & info, const ref<std::str
/* Atomically write the NAR info file.*/
if (secretKey) narInfo->sign(*secretKey);
upsertFile(narInfoFile, narInfo->to_string(), "text/x-nix-narinfo");
auto hashPart = storePathToHash(narInfo->path);
{
auto state_(state.lock());
state_->pathInfoCache.upsert(hashPart, std::shared_ptr<NarInfo>(narInfo));
}
if (diskCache)
diskCache->upsertNarInfo(getUri(), hashPart, std::shared_ptr<NarInfo>(narInfo));
writeNarInfo(narInfo);
stats.narInfoWrite++;
}
@ -293,6 +298,22 @@ ref<FSAccessor> BinaryCacheStore::getFSAccessor()
return make_ref<RemoteFSAccessor>(ref<Store>(shared_from_this()), localNarCache);
}
void BinaryCacheStore::addSignatures(const Path & storePath, const StringSet & sigs)
{
/* Note: this is inherently racy since there is no locking on
binary caches. In particular, with S3 this unreliable, even
when addSignatures() is called sequentially on a path, because
S3 might return an outdated cached version. */
auto narInfo = make_ref<NarInfo>((NarInfo &) *queryPathInfo(storePath));
narInfo->sigs.insert(sigs.begin(), sigs.end());
auto narInfoFile = narInfoFileFor(narInfo->path);
writeNarInfo(narInfo);
}
std::shared_ptr<std::string> BinaryCacheStore::getBuildLog(const Path & path)
{
Path drvPath;

5
src/libstore/binary-cache-store.hh
View file

@ -59,6 +59,8 @@ private:
std::string narInfoFileFor(const Path & storePath);
void writeNarInfo(ref<NarInfo> narInfo);
public:
bool isValidPathUncached(const Path & path) override;
@ -119,8 +121,7 @@ public:
ref<FSAccessor> getFSAccessor() override;
void addSignatures(const Path & storePath, const StringSet & sigs) override
{ unsupported(); }
void addSignatures(const Path & storePath, const StringSet & sigs) override;
std::shared_ptr<std::string> getBuildLog(const Path & path) override;

6
tests/signing.sh
View file

@ -60,3 +60,9 @@ info=$(nix path-info --store file://$cacheDir --json $outPath2)
(! [[ $info =~ '"ultimate":true' ]])
[[ $info =~ 'cache1.example.org' ]]
(! [[ $info =~ 'cache2.example.org' ]])
# Verify that adding a signature to a path in a binary cache works.
nix sign-paths --store file://$cacheDir --key-file $TEST_ROOT/sk2 $outPath2
info=$(nix path-info --store file://$cacheDir --json $outPath2)
[[ $info =~ 'cache1.example.org' ]]
[[ $info =~ 'cache2.example.org' ]]