RemoteStore::addToStore(): Pass content-addressability assertion
... and use this in Downloader::downloadCached(). This fixes $ nix-build https://nixos.org/channels/nixos-16.09-small/nixexprs.tar.xz -A hello error: cannot import path ‘/nix/store/csfbp1s60dkgmk9f8g0zk0mwb7hzgabd-nixexprs.tar.xz’ because it lacks a valid signature
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@ -612,6 +612,7 @@ Path Downloader::downloadCached(ref<Store> store, const string & url_, bool unpa
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Hash hash = hashString(expectedHash ? expectedHash.type : htSHA256, *res.data);
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info.path = store->makeFixedOutputPath(false, hash, name);
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info.narHash = hashString(htSHA256, *sink.s);
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info.ca = makeFixedOutputCA(false, hash);
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store->addToStore(info, sink.s, false, true);
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storePath = info.path;
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}
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@ -1002,7 +1002,7 @@ Path LocalStore::addToStoreFromDump(const string & dump, const string & name,
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info.narHash = hash.first;
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info.narSize = hash.second;
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info.ultimate = true;
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info.ca = "fixed:" + (recursive ? (std::string) "r:" : "") + h.to_string();
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info.ca = makeFixedOutputCA(recursive, h);
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registerValidPath(info);
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}
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@ -380,7 +380,7 @@ void RemoteStore::addToStore(const ValidPathInfo & info, const ref<std::string>
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conn->to << wopAddToStoreNar
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<< info.path << info.deriver << printHash(info.narHash)
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<< info.references << info.registrationTime << info.narSize
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<< info.ultimate << info.sigs << *nar << repair << dontCheckSigs;
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<< info.ultimate << info.sigs << info.ca << *nar << repair << dontCheckSigs;
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// FIXME: don't send nar as a string
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conn->processStderr();
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}
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@ -676,6 +676,12 @@ Strings ValidPathInfo::shortRefs() const
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}
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std::string makeFixedOutputCA(bool recursive, const Hash & hash)
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{
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return "fixed:" + (recursive ? (std::string) "r:" : "") + hash.to_string();
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}
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}
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@ -128,7 +128,7 @@ struct ValidPathInfo
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of an output path of a derivation were actually produced by
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that derivation. In the intensional model, we have to trust
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that a particular output path was produced by a derivation; the
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path name then implies the contents.)
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path then implies the contents.)
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Ideally, the content-addressability assertion would just be a
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Boolean, and the store path would be computed from
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@ -687,6 +687,11 @@ ValidPathInfo decodeValidPathInfo(std::istream & str,
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bool hashGiven = false);
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/* Compute the content-addressability assertion (ValidPathInfo::ca)
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for paths created by makeFixedOutputPath() / addToStore(). */
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std::string makeFixedOutputCA(bool recursive, const Hash & hash);
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MakeError(SubstError, Error)
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MakeError(BuildError, Error) /* denotes a permanent build failure */
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MakeError(InvalidPath, Error)
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@ -582,6 +582,7 @@ static void performOp(ref<LocalStore> store, bool trusted, unsigned int clientVe
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info.narSize = readLongLong(from);
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info.ultimate = readLongLong(from);
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info.sigs = readStrings<StringSet>(from);
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info.ca = readString(from);
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auto nar = make_ref<std::string>(readString(from));
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auto repair = readInt(from) ? true : false;
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auto dontCheckSigs = readInt(from) ? true : false;
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