nix/tests/functional/secure-drv-outputs.sh
John Ericson 68c81c7375 Put functional tests in tests/functional
I think it is bad for these reasons when `tests/` contains a mix of
functional and integration tests

 - Concepts is harder to understand, the documentation makes a good
   unit vs functional vs integration distinction, but when the
   integration tests are just two subdirs within `tests/` this is not
   clear.

 - Source filtering in the `flake.nix` is more complex. We need to
   filter out some of the dirs from `tests/`, rather than simply pick
   the dirs we want and take all of them. This is a good sign the
   structure of what we are trying to do is not matching the structure
   of the files.

With this change we have a clean:
```shell-session
$ git show 'HEAD:tests'
tree HEAD:tests

functional/
installer/
nixos/
```
2023-10-06 09:05:56 -04:00

37 lines
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# Test that users cannot register specially-crafted derivations that
# produce output paths belonging to other derivations. This could be
# used to inject malware into the store.
source common.sh
clearStore
startDaemon
# Determine the output path of the "good" derivation.
goodOut=$(nix-store -q $(nix-instantiate ./secure-drv-outputs.nix -A good))
# Instantiate the "bad" derivation.
badDrv=$(nix-instantiate ./secure-drv-outputs.nix -A bad)
badOut=$(nix-store -q $badDrv)
# Rewrite the bad derivation to produce the output path of the good
# derivation.
rm -f $TEST_ROOT/bad.drv
sed -e "s|$badOut|$goodOut|g" < $badDrv > $TEST_ROOT/bad.drv
# Add the manipulated derivation to the store and build it. This
# should fail.
if badDrv2=$(nix-store --add $TEST_ROOT/bad.drv); then
nix-store -r "$badDrv2"
fi
# Now build the good derivation.
goodOut2=$(nix-build ./secure-drv-outputs.nix -A good --no-out-link)
test "$goodOut" = "$goodOut2"
if ! test -e "$goodOut"/good; then
echo "Bad derivation stole the output path of the good derivation!"
exit 1
fi