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#include "command.hh"
#include "shared.hh"
#include "store-api.hh"
#include "sync.hh"
#include "thread-pool.hh"
#include "signals.hh"
#include "references.hh"
#include <atomic>
using namespace nix;
struct CmdVerify : StorePathsCommand
{
bool noContents = false;
bool noTrust = false;
Strings substituterUris;
size_t sigsNeeded = 0;
CmdVerify()
{
addFlag({
.longName = "no-contents",
.description = "Do not verify the contents of each store path.",
.handler = {&noContents, true},
});
addFlag({
.longName = "no-trust",
.description = "Do not verify whether each store path is trusted.",
.handler = {&noTrust, true},
});
addFlag({
.longName = "substituter",
.shortName = 's',
.description = "Use signatures from the specified store.",
.labels = {"store-uri"},
.handler = {[&](std::string s) { substituterUris.push_back(s); }}
});
addFlag({
.longName = "sigs-needed",
.shortName = 'n',
.description = "Require that each path is signed by at least *n* different keys.",
.labels = {"n"},
.handler = {&sigsNeeded}
});
}
std::string description() override
{
return "verify the integrity of store paths";
}
std::string doc() override
{
return
#include "verify.md"
;
}
void run(ref<Store> store, StorePaths && storePaths) override
{
std::vector<ref<Store>> substituters;
for (auto & s : substituterUris)
substituters.push_back(openStore(s));
auto publicKeys = getDefaultPublicKeys();
Activity act(*logger, actVerifyPaths);
std::atomic<size_t> done{0};
std::atomic<size_t> untrusted{0};
std::atomic<size_t> corrupted{0};
std::atomic<size_t> failed{0};
std::atomic<size_t> active{0};
auto update = [&]() {
act.progress(done, storePaths.size(), active, failed);
};
ThreadPool pool;
auto doPath = [&](const StorePath & storePath) {
try {
checkInterrupt();
MaintainCount<std::atomic<size_t>> mcActive(active);
update();
auto info = store->queryPathInfo(storePath);
// Note: info->path can be different from storePath
// for binary cache stores when using --all (since we
// can't enumerate names efficiently).
Activity act2(*logger, lvlInfo, actUnknown, fmt("checking '%s'", store->printStorePath(info->path)));
if (!noContents) {
auto hashSink = HashSink(info->narHash.type);
store->narFromPath(info->path, hashSink);
auto hash = hashSink.finish();
if (hash.first != info->narHash) {
corrupted++;
act2.result(resCorruptedPath, store->printStorePath(info->path));
printError("path '%s' was modified! expected hash '%s', got '%s'",
store->printStorePath(info->path),
info->narHash.to_string(Base32, true),
hash.first.to_string(Base32, true));
}
}
if (!noTrust) {
bool good = false;
if (info->ultimate && !sigsNeeded)
good = true;
else {
StringSet sigsSeen;
size_t actualSigsNeeded = std::max(sigsNeeded, (size_t) 1);
size_t validSigs = 0;
auto doSigs = [&](StringSet sigs) {
for (auto sig : sigs) {
if (!sigsSeen.insert(sig).second) continue;
if (validSigs < ValidPathInfo::maxSigs && info->checkSignature(*store, publicKeys, sig))
validSigs++;
}
};
if (info->isContentAddressed(*store)) validSigs = ValidPathInfo::maxSigs;
doSigs(info->sigs);
for (auto & store2 : substituters) {
if (validSigs >= actualSigsNeeded) break;
try {
auto info2 = store2->queryPathInfo(info->path);
if (info2->isContentAddressed(*store)) validSigs = ValidPathInfo::maxSigs;
doSigs(info2->sigs);
} catch (InvalidPath &) {
} catch (Error & e) {
logError(e.info());
}
}
if (validSigs >= actualSigsNeeded)
good = true;
}
if (!good) {
untrusted++;
act2.result(resUntrustedPath, store->printStorePath(info->path));
printError("path '%s' is untrusted", store->printStorePath(info->path));
}
}
done++;
} catch (Error & e) {
logError(e.info());
failed++;
}
update();
};
for (auto & storePath : storePaths)
pool.enqueue(std::bind(doPath, storePath));
pool.process();
throw Exit(
(corrupted ? 1 : 0) |
(untrusted ? 2 : 0) |
(failed ? 4 : 0));
}
};
static auto rCmdVerify = registerCommand2<CmdVerify>({"store", "verify"});
|
