73 lines
2.6 KiB
Nix
73 lines
2.6 KiB
Nix
import ./make-test-python.nix (
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{ lib, pkgs, ... }:
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{
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name = "systemd-credentials-tpm2";
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meta = {
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maintainers = with pkgs.lib.maintainers; [ tmarkus ];
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};
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nodes.machine =
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{ pkgs, ... }:
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{
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virtualisation.tpm.enable = true;
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environment.systemPackages = with pkgs; [ diffutils ];
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};
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testScript = ''
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CRED_NAME = "testkey"
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CRED_RAW_FILE = f"/root/{CRED_NAME}"
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CRED_FILE = f"/root/{CRED_NAME}.cred"
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def systemd_run(machine, cmd):
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machine.log(f"Executing command (via systemd-run): \"{cmd}\"")
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(status, out) = machine.execute( " ".join([
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"systemd-run",
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"--service-type=exec",
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"--quiet",
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"--wait",
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"-E PATH=\"$PATH\"",
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"-p StandardOutput=journal",
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"-p StandardError=journal",
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f"-p LoadCredentialEncrypted={CRED_NAME}:{CRED_FILE}",
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f"$SHELL -c '{cmd}'"
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]) )
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if status != 0:
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raise Exception(f"systemd_run failed (status {status})")
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machine.log("systemd-run finished successfully")
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machine.wait_for_unit("multi-user.target")
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with subtest("Check whether TPM device exists"):
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machine.succeed("test -e /dev/tpm0")
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machine.succeed("test -e /dev/tpmrm0")
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with subtest("Check whether systemd-creds detects TPM2 correctly"):
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cmd = "systemd-creds has-tpm2"
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machine.log(f"Running \"{cmd}\"")
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(status, _) = machine.execute(cmd)
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# Check exit code equals 0 or 1 (1 means firmware support is missing, which is OK here)
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if status != 0 and status != 1:
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raise Exception("systemd-creds failed to detect TPM2")
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with subtest("Encrypt credential using systemd-creds"):
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machine.succeed(f"dd if=/dev/urandom of={CRED_RAW_FILE} bs=1k count=16")
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machine.succeed(f"systemd-creds --with-key=host+tpm2 encrypt --name=testkey {CRED_RAW_FILE} {CRED_FILE}")
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with subtest("Write provided credential and check for equality"):
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CRED_OUT_FILE = f"/root/{CRED_NAME}.out"
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systemd_run(machine, f"systemd-creds cat testkey > {CRED_OUT_FILE}")
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machine.succeed(f"cmp --silent -- {CRED_RAW_FILE} {CRED_OUT_FILE}")
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with subtest("Check whether systemd service can see credential in systemd-creds list"):
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systemd_run(machine, f"systemd-creds list | grep {CRED_NAME}")
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with subtest("Check whether systemd service can access credential in $CREDENTIALS_DIRECTORY"):
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systemd_run(machine, f"cmp --silent -- $CREDENTIALS_DIRECTORY/{CRED_NAME} {CRED_RAW_FILE}")
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'';
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}
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)
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