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nix-store --generate-binary-cache-key: Write key to disk

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This ensures proper permissions for the secret key.
This commit is contained in:
Eelco Dolstra 2015-02-18 11:19:44 +01:00
parent bd91064150
commit 147deb236e
2 changed files with 15 additions and 13 deletions
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12
src/nix-store/nix-store.cc
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@ -1015,8 +1015,11 @@ static void opGenerateBinaryCacheKey(Strings opFlags, Strings opArgs)
foreach (Strings::iterator, i, opFlags)
throw UsageError(format("unknown flag ‘%1%’") % *i);
if (opArgs.size() != 1) throw UsageError("one argument expected");
string keyName = opArgs.front();
if (opArgs.size() != 3) throw UsageError("three arguments expected");
auto i = opArgs.begin();
string keyName = *i++;
string secretKeyFile = *i++;
string publicKeyFile = *i++;
#if HAVE_SODIUM
sodium_init();
@ -1026,8 +1029,9 @@ static void opGenerateBinaryCacheKey(Strings opFlags, Strings opArgs)
if (crypto_sign_keypair(pk, sk) != 0)
throw Error("key generation failed");
std::cout << keyName << ":" << base64Encode(string((char *) pk, crypto_sign_PUBLICKEYBYTES)) << std::endl;
std::cout << keyName << ":" << base64Encode(string((char *) sk, crypto_sign_SECRETKEYBYTES)) << std::endl;
writeFile(publicKeyFile, keyName + ":" + base64Encode(string((char *) pk, crypto_sign_PUBLICKEYBYTES)));
umask(0077);
writeFile(secretKeyFile, keyName + ":" + base64Encode(string((char *) sk, crypto_sign_SECRETKEYBYTES)));
#else
throw Error("Nix was not compiled with libsodium, required for signed binary cache support");
#endif