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Also obfuscate the number of memory roots

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Guillaume Maudoux 2019-03-01 01:29:37 +01:00 committed by Guillaume Maudoux
parent fc02b1b3ee
commit 5c56570726
1 changed files with 16 additions and 2 deletions
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18
src/nix-daemon/nix-daemon.cc
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@ -478,15 +478,29 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
Roots roots = store->findRoots();
logger->stopWork();
size_t total_length = 0;
for (auto & root : roots)
total_length += root.second.size();
bool hasMemoryLink;
for (auto & [target, links] : roots) {
hasMemoryLink = false;
for (auto & link : links) {
if (link.rfind("{memory:", 0) == 0) {
if (hasMemoryLink) continue;
++total_length;
hasMemoryLink = true;
} else {
++total_length;
}
}
}
to << total_length;
int n = 0;
for (auto & [target, links] : roots) {
bool hasMemoryLink = false;
for (auto & link : links) {
// Obfuscate 'memory' roots as they expose information about other users,
if (link.rfind("{memory:", 0) == 0) {
if (hasMemoryLink) continue;
to << fmt("{memory:%d}", n++) << target;
hasMemoryLink = true;
} else {
to << link << target;
}