diff options
| -rw-r--r-- | src/libstore/globals.hh | 4 | ||||
| -rw-r--r-- | src/nix-daemon/nix-daemon.cc | 48 |
2 files changed, 46 insertions, 6 deletions
diff --git a/src/libstore/globals.hh b/src/libstore/globals.hh index 72863920de99..a5d5a3f5057d 100644 --- a/src/libstore/globals.hh +++ b/src/libstore/globals.hh @@ -239,6 +239,10 @@ public: "Additional URIs of substituters.", {"extra-binary-caches"}}; + Setting<StringSet> trustedSubstituters{this, {}, "trusted-substituters", + "Disabled substituters that may be enabled via the substituters option by untrusted users.", + {"trusted-binary-caches"}}; + Setting<Strings> trustedUsers{this, {"root"}, "trusted-users", "Which users or groups are trusted to ask the daemon to do unsafe things."}; diff --git a/src/nix-daemon/nix-daemon.cc b/src/nix-daemon/nix-daemon.cc index 1389353bb5d8..5c2641eac6ff 100644 --- a/src/nix-daemon/nix-daemon.cc +++ b/src/nix-daemon/nix-daemon.cc @@ -448,20 +448,56 @@ static void performOp(ref<LocalStore> store, bool trusted, unsigned int clientVe readInt(from); // obsolete printBuildTrace settings.buildCores = readInt(from); settings.useSubstitutes = readInt(from); + + StringMap overrides; if (GET_PROTOCOL_MINOR(clientVersion) >= 12) { unsigned int n = readInt(from); for (unsigned int i = 0; i < n; i++) { string name = readString(from); string value = readString(from); - try { - if (trusted || name == "build-timeout") - settings.set(name, value); - } catch (UsageError & e) { - warn(e.what()); - } + overrides.emplace(name, value); } } + startWork(); + + for (auto & i : overrides) { + auto & name(i.first); + auto & value(i.second); + + auto setSubstituters = [&](Setting<Strings> & res) { + if (name != res.name && res.aliases.count(name) == 0) + return false; + StringSet trusted = settings.trustedSubstituters; + for (auto & s : settings.substituters.get()) + trusted.insert(s); + Strings subs; + auto ss = tokenizeString<Strings>(value); + for (auto & s : ss) + if (trusted.count(s)) + subs.push_back(s); + else + warn("ignoring untrusted substituter '%s'", s); + res = subs; + return true; + }; + + try { + if (trusted + || name == settings.buildTimeout.name + || name == settings.connectTimeout.name) + settings.set(name, value); + else if (setSubstituters(settings.substituters)) + ; + else if (setSubstituters(settings.extraSubstituters)) + ; + else + debug("ignoring untrusted setting '%s'", name); + } catch (UsageError & e) { + warn(e.what()); + } + } + stopWork(); break; } |