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#include "path-info.hh"
#include "store-api.hh"
namespace nix {
GENERATE_CMP_EXT(
,
UnkeyedValidPathInfo,
me->deriver,
me->narHash,
me->references,
me->registrationTime,
me->narSize,
//me->id,
me->ultimate,
me->sigs,
me->ca);
GENERATE_CMP_EXT(
,
ValidPathInfo,
me->path,
static_cast<const UnkeyedValidPathInfo &>(*me));
std::string ValidPathInfo::fingerprint(const Store & store) const
{
if (narSize == 0)
throw Error("cannot calculate fingerprint of path '%s' because its size is not known",
store.printStorePath(path));
return
"1;" + store.printStorePath(path) + ";"
+ narHash.to_string(Base32, true) + ";"
+ std::to_string(narSize) + ";"
+ concatStringsSep(",", store.printStorePathSet(references));
}
void ValidPathInfo::sign(const Store & store, const SecretKey & secretKey)
{
sigs.insert(secretKey.signDetached(fingerprint(store)));
}
std::optional<ContentAddressWithReferences> ValidPathInfo::contentAddressWithReferences() const
{
if (! ca)
return std::nullopt;
return std::visit(overloaded {
[&](const TextIngestionMethod &) -> ContentAddressWithReferences {
assert(references.count(path) == 0);
return TextInfo {
.hash = ca->hash,
.references = references,
};
},
[&](const FileIngestionMethod & m2) -> ContentAddressWithReferences {
auto refs = references;
bool hasSelfReference = false;
if (refs.count(path)) {
hasSelfReference = true;
refs.erase(path);
}
return FixedOutputInfo {
.method = m2,
.hash = ca->hash,
.references = {
.others = std::move(refs),
.self = hasSelfReference,
},
};
},
}, ca->method.raw);
}
bool ValidPathInfo::isContentAddressed(const Store & store) const
{
auto fullCaOpt = contentAddressWithReferences();
if (! fullCaOpt)
return false;
auto caPath = store.makeFixedOutputPathFromCA(path.name(), *fullCaOpt);
bool res = caPath == path;
if (!res)
printError("warning: path '%s' claims to be content-addressed but isn't", store.printStorePath(path));
return res;
}
size_t ValidPathInfo::checkSignatures(const Store & store, const PublicKeys & publicKeys) const
{
if (isContentAddressed(store)) return maxSigs;
size_t good = 0;
for (auto & sig : sigs)
if (checkSignature(store, publicKeys, sig))
good++;
return good;
}
bool ValidPathInfo::checkSignature(const Store & store, const PublicKeys & publicKeys, const std::string & sig) const
{
return verifyDetached(fingerprint(store), sig, publicKeys);
}
Strings ValidPathInfo::shortRefs() const
{
Strings refs;
for (auto & r : references)
refs.push_back(std::string(r.to_string()));
return refs;
}
ValidPathInfo::ValidPathInfo(
const Store & store,
std::string_view name,
ContentAddressWithReferences && ca,
Hash narHash)
: UnkeyedValidPathInfo(narHash)
, path(store.makeFixedOutputPathFromCA(name, ca))
{
std::visit(overloaded {
[this](TextInfo && ti) {
this->references = std::move(ti.references);
this->ca = ContentAddress {
.method = TextIngestionMethod {},
.hash = std::move(ti.hash),
};
},
[this](FixedOutputInfo && foi) {
this->references = std::move(foi.references.others);
if (foi.references.self)
this->references.insert(path);
this->ca = ContentAddress {
.method = std::move(foi.method),
.hash = std::move(foi.hash),
};
},
}, std::move(ca).raw);
}
}
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