Merge pull request #8230 from obsidiansystems/daemon-trust-override

Experimentally allow forcing `nix-daemon` trust; use this to test

tests/build-remote-trustless-after.sh

@@ -0,0 +1,2 @@
+outPath=$(readlink -f $TEST_ROOT/result)
+grep 'FOO BAR BAZ' ${remoteDir}/${outPath}

tests/build-remote-trustless-should-fail-0.sh

@@ -0,0 +1,29 @@
+source common.sh
+
+enableFeatures "daemon-trust-override"
+
+restartDaemon
+
+[[ $busybox =~ busybox ]] || skipTest "no busybox"
+
+unset NIX_STORE_DIR
+unset NIX_STATE_DIR
+
+# We first build a dependency of the derivation we eventually want to
+# build.
+nix-build build-hook.nix -A passthru.input2 \
+  -o "$TEST_ROOT/input2" \
+  --arg busybox "$busybox" \
+  --store "$TEST_ROOT/local" \
+  --option system-features bar
+
+# Now when we go to build that downstream derivation, Nix will fail
+# because we cannot trustlessly build input-addressed derivations with
+# `inputDrv` dependencies.
+
+file=build-hook.nix
+prog=$(readlink -e ./nix-daemon-untrusting.sh)
+proto=ssh-ng
+
+expectStderr 1 source build-remote-trustless.sh \
+    | grepQuiet "you are not privileged to build input-addressed derivations"

tests/build-remote-trustless-should-pass-0.sh

@@ -0,0 +1,9 @@
+source common.sh
+
+# Remote trusts us
+file=build-hook.nix
+prog=nix-store
+proto=ssh
+
+source build-remote-trustless.sh
+source build-remote-trustless-after.sh

tests/build-remote-trustless-should-pass-1.sh

@@ -0,0 +1,9 @@
+source common.sh
+
+# Remote trusts us
+file=build-hook.nix
+prog=nix-daemon
+proto=ssh-ng
+
+source build-remote-trustless.sh
+source build-remote-trustless-after.sh

tests/build-remote-trustless-should-pass-3.sh

@@ -0,0 +1,14 @@
+source common.sh
+
+enableFeatures "daemon-trust-override"
+
+restartDaemon
+
+# Remote doesn't trusts us, but this is fine because we are only
+# building (fixed) CA derivations.
+file=build-hook-ca-fixed.nix
+prog=$(readlink -e ./nix-daemon-untrusting.sh)
+proto=ssh-ng
+
+source build-remote-trustless.sh
+source build-remote-trustless-after.sh

tests/build-remote-trustless.sh

@@ -0,0 +1,14 @@
+requireSandboxSupport
+[[ $busybox =~ busybox ]] || skipTest "no busybox"
+
+unset NIX_STORE_DIR
+unset NIX_STATE_DIR
+
+remoteDir=$TEST_ROOT/remote
+
+# Note: ssh{-ng}://localhost bypasses ssh. See tests/build-remote.sh for
+# more details.
+nix-build $file -o $TEST_ROOT/result --max-jobs 0 \
+  --arg busybox $busybox \
+  --store $TEST_ROOT/local \
+  --builders "$proto://localhost?remote-program=$prog&remote-store=${remoteDir}%3Fsystem-features=foo%20bar%20baz - - 1 1 foo,bar,baz"

tests/local.mk

@@ -70,6 +70,10 @@ nix_tests = \
   check-reqs.sh \
   build-remote-content-addressed-fixed.sh \
   build-remote-content-addressed-floating.sh \
+  build-remote-trustless-should-pass-0.sh \
+  build-remote-trustless-should-pass-1.sh \
+  build-remote-trustless-should-pass-3.sh \
+  build-remote-trustless-should-fail-0.sh \
   nar-access.sh \
   pure-eval.sh \
   eval.sh \

tests/nix-daemon-untrusting.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+exec nix-daemon --force-untrusted "$@"