Add `Store::isTrustedClient()`

This function returns true or false depending on whether the Nix client
is trusted or not. Mostly relevant when speaking to a remote store with
a daemon.

We include this information in `nix ping store` and `nix doctor`

Co-Authored-By: John Ericson <John.Ericson@Obsidian.Systems>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/nix/ping-store.cc b/src/nix/ping-store.cc
index 5c44510ab..ec450e8e0 100644
--- a/src/nix/ping-store.cc
+++ b/src/nix/ping-store.cc
@@ -28,15 +28,20 @@ struct CmdPingStore : StoreCommand, MixJSON
             store->connect();
             if (auto version = store->getVersion())
                 notice("Version: %s", *version);
+            if (auto trusted = store->isTrustedClient())
+                notice("Trusted: %s", *trusted);
         } else {
             nlohmann::json res;
             Finally printRes([&]() {
                 logger->cout("%s", res);
             });
+
             res["url"] = store->getUri();
             store->connect();
             if (auto version = store->getVersion())
                 res["version"] = *version;
+            if (auto trusted = store->isTrustedClient())
+                res["trusted"] = *trusted;
         }
     }
 };