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Fix empty std::optional dereference in writeDerivation()

Browse source 
https://hydra.nixos.org/build/123017579
This commit is contained in:
Eelco Dolstra 2020-06-25 15:50:30 +02:00
parent 3c50e84387
commit de2641ae99
3 changed files with 26 additions and 20 deletions
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17
src/libstore/derivations.cc
View file

@ -404,7 +404,7 @@ static DerivationOutput readDerivationOutput(Source & in, const Store & store)
{ {
auto path = store.parseStorePath(readString(in)); auto path = store.parseStorePath(readString(in));
auto hashAlgo = readString(in); auto hashAlgo = readString(in);
const auto hash = readString(in); auto hash = readString(in);
std::optional<FixedOutputHash> fsh; std::optional<FixedOutputHash> fsh;
if (hashAlgo != "") { if (hashAlgo != "") {
@ -413,7 +413,7 @@ static DerivationOutput readDerivationOutput(Source & in, const Store & store)
method = FileIngestionMethod::Recursive; method = FileIngestionMethod::Recursive;
hashAlgo = string(hashAlgo, 2); hashAlgo = string(hashAlgo, 2);
} }
const HashType hashType = parseHashType(hashAlgo); auto hashType = parseHashType(hashAlgo);
fsh = FixedOutputHash { fsh = FixedOutputHash {
.method = std::move(method), .method = std::move(method),
.hash = Hash(hash, hashType), .hash = Hash(hash, hashType),
@ -463,11 +463,16 @@ Source & readDerivation(Source & in, const Store & store, BasicDerivation & drv)
void writeDerivation(Sink & out, const Store & store, const BasicDerivation & drv) void writeDerivation(Sink & out, const Store & store, const BasicDerivation & drv)
{ {
out << drv.outputs.size(); out << drv.outputs.size();
for (auto & i : drv.outputs) for (auto & i : drv.outputs) {
out << i.first out << i.first
<< store.printStorePath(i.second.path) << store.printStorePath(i.second.path);
<< i.second.hash->printMethodAlgo() if (i.second.hash) {
<< i.second.hash->hash.to_string(Base16, false); out << i.second.hash->printMethodAlgo()
<< i.second.hash->hash.to_string(Base16, false);
} else {
out << "" << "";
}
}
writeStorePaths(store, out, drv.inputSrcs); writeStorePaths(store, out, drv.inputSrcs);
out << drv.platform << drv.builder << drv.args; out << drv.platform << drv.builder << drv.args;
out << drv.env.size(); out << drv.env.size();

27
src/libutil/hash.cc
View file

@ -19,7 +19,7 @@ namespace nix {
void Hash::init() void Hash::init()
{ {
if (!type) abort(); assert(type);
switch (*type) { switch (*type) {
case htMD5: hashSize = md5HashSize; break; case htMD5: hashSize = md5HashSize; break;
case htSHA1: hashSize = sha1HashSize; break; case htSHA1: hashSize = sha1HashSize; break;
@ -101,15 +101,15 @@ static string printHash32(const Hash & hash)
string printHash16or32(const Hash & hash) string printHash16or32(const Hash & hash)
{ {
assert(hash.type);
return hash.to_string(hash.type == htMD5 ? Base16 : Base32, false); return hash.to_string(hash.type == htMD5 ? Base16 : Base32, false);
} }
HashType assertInitHashType(const Hash & h) { HashType assertInitHashType(const Hash & h)
if (h.type) {
return *h.type; assert(h.type);
else return *h.type;
abort();
} }
std::string Hash::to_string(Base base, bool includeType) const std::string Hash::to_string(Base base, bool includeType) const
@ -363,14 +363,15 @@ HashType parseHashType(const string & s)
string printHashType(HashType ht) string printHashType(HashType ht)
{ {
switch (ht) { switch (ht) {
case htMD5: return "md5"; break; case htMD5: return "md5";
case htSHA1: return "sha1"; break; case htSHA1: return "sha1";
case htSHA256: return "sha256"; break; case htSHA256: return "sha256";
case htSHA512: return "sha512"; break; case htSHA512: return "sha512";
default:
// illegal hash type enum value internally, as opposed to external input
// which should be validated with nice error message.
abort();
} }
// illegal hash type enum value internally, as opposed to external input
// which should be validated with nice error message.
abort();
} }
} }

2
src/libutil/hash.hh
View file

@ -10,7 +10,7 @@ namespace nix {
MakeError(BadHash, Error); MakeError(BadHash, Error);
enum HashType : char { htMD5, htSHA1, htSHA256, htSHA512 }; enum HashType : char { htMD5 = 42, htSHA1, htSHA256, htSHA512 };
const int md5HashSize = 16; const int md5HashSize = 16;