kola/tests: Add failing test for FIPS & LUKS

Ensure that setting up a LUKS device with FIPS incompatible algorithms
will fail when FIPS mode is enabled.

Only run this on QEMU as it should behave the same way on all platforms.

Author: travier

mantle/kola/tests/fips/failure.go

@@ -0,0 +1,198 @@
+// Copyright 2025 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package fips
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"regexp"
+	"time"
+
+	"github.com/pkg/errors"
+
+	"github.com/coreos/coreos-assembler/mantle/kola"
+	"github.com/coreos/coreos-assembler/mantle/kola/cluster"
+	"github.com/coreos/coreos-assembler/mantle/kola/register"
+	"github.com/coreos/coreos-assembler/mantle/platform"
+	"github.com/coreos/coreos-assembler/mantle/platform/conf"
+)
+
+var failConfig = conf.Ignition(`{
+	"ignition": {
+		"version": "3.4.0"
+	},
+	"storage": {
+		"filesystems": [
+			{
+				"device": "/dev/mapper/root",
+				"format": "xfs",
+				"label": "root",
+				"wipeFilesystem": true
+			}
+		],
+		"luks": [
+			{
+				"clevis": {
+					"tpm2": true
+				},
+				"device": "/dev/disk/by-partlabel/root",
+				"label": "luks-root",
+				"name": "root",
+				"options": [
+					"--cipher",
+					"aes-cbc-essiv:sha256",
+					"--pbkdf",
+					"argon2i"
+				],
+				"wipeVolume": true
+			}
+		],
+		"files": [
+			{
+				"group": {
+					"name": "root"
+				},
+				"overwrite": true,
+				"path": "/etc/ignition-machine-config-encapsulated.json",
+				"user": {
+					"name": "root"
+				},
+				"contents": {
+					"source": "data:,%7B%22metadata%22%3A%7B%22name%22%3A%22rendered-worker-1cc576110e0cf8396831ce4016f63900%22%2C%22selfLink%22%3A%22%2Fapis%2Fmachineconfiguration.openshift.io%2Fv1%2Fmachineconfigs%2Frendered-worker-1cc576110e0cf8396831ce4016f63900%22%2C%22uid%22%3A%2248871c03-899d-4332-a5f5-bef94e54b23f%22%2C%22resourceVersion%22%3A%224168%22%2C%22generation%22%3A1%2C%22creationTimestamp%22%3A%222019-11-04T15%3A54%3A08Z%22%2C%22annotations%22%3A%7B%22machineconfiguration.openshift.io%2Fgenerated-by-controller-version%22%3A%22bd846958bc95d049547164046a962054fca093df%22%7D%2C%22ownerReferences%22%3A%5B%7B%22apiVersion%22%3A%22machineconfiguration.openshift.io%2Fv1%22%2C%22kind%22%3A%22MachineConfigPool%22%2C%22name%22%3A%22worker%22%2C%22uid%22%3A%223d0dee9e-c9d6-4656-a4a9-81785b9ab01a%22%2C%22controller%22%3Atrue%2C%22blockOwnerDeletion%22%3Atrue%7D%5D%7D%2C%22spec%22%3A%7B%22osImageURL%22%3A%22registry.svc.ci.openshift.org%2Focp%2F4.3-2019-11-04-125204%40sha256%3A8a344c5b157bd01c3ca1abfcef0004fc39f5d69cac1cdaad0fd8dd332ad8e272%22%2C%22config%22%3A%7B%22ignition%22%3A%7B%22config%22%3A%7B%7D%2C%22security%22%3A%7B%22tls%22%3A%7B%7D%7D%2C%22timeouts%22%3A%7B%7D%2C%22version%22%3A%223.0.0%22%7D%2C%22networkd%22%3A%7B%7D%2C%22passwd%22%3A%7B%7D%2C%22storage%22%3A%7B%7D%2C%22systemd%22%3A%7B%7D%7D%2C%22kernelArguments%22%3A%5B%5D%2C%22fips%22%3Atrue%7D%7D",
+					"verification": {}
+				},
+				"mode": 420
+			}
+		]
+	}
+}`)
+
+func init() {
+	register.RegisterTest(&register.Test{
+		Name:        "fips.failure",
+		Description: "Verify cryptsetup lukscreate will fail with FIPS and incompatible crypto algorithms.",
+		Run:         runFipsFailure,
+		ClusterSize: 0,
+		Platforms:   []string{"qemu"},
+		Tags:        []string{"ignition"},
+		Distros:     []string{"rhcos"},
+	})
+}
+
+func runFipsFailure(c cluster.TestCluster) {
+	if err := ignitionFailure(c); err != nil {
+		c.Fatal(err.Error())
+	}
+}
+
+// Read file and verify if it contains a pattern
+// 1. Read file, make sure it exists
+// 2. regex for pattern
+func fileContainsPattern(path string, searchPattern string) (bool, error) {
+	file, err := os.ReadFile(path)
+	if err != nil {
+		return false, err
+	}
+	// File has content, but the pattern is not present
+	match := regexp.MustCompile(searchPattern).Match(file)
+	if match {
+		// Pattern found
+		return true, nil
+	}
+	// Pattern not found
+	return false, nil
+}
+
+// Start the VM, take string and grep for it in the temporary console logs
+func verifyError(builder *platform.QemuBuilder, searchPattern string) error {
+	inst, err := builder.Exec()
+	if err != nil {
+		return err
+	}
+	defer inst.Destroy()
+	ctx, cancel := context.WithTimeout(context.Background(), 4*time.Minute)
+
+	defer cancel()
+
+	errchan := make(chan error)
+	go func() {
+		resultingError := inst.WaitAll(ctx)
+		if resultingError == nil {
+			resultingError = fmt.Errorf("ignition unexpectedly succeeded")
+		} else if resultingError == platform.ErrInitramfsEmergency {
+			// Expected initramfs failure, checking the console file to ensure
+			// that it failed the expected way
+			found, err := fileContainsPattern(builder.ConsoleFile, searchPattern)
+			if err != nil {
+				resultingError = errors.Wrapf(err, "looking for pattern '%s' in file '%s' failed", searchPattern, builder.ConsoleFile)
+			} else if !found {
+				resultingError = fmt.Errorf("pattern '%s' in file '%s' not found", searchPattern, builder.ConsoleFile)
+			} else {
+				// The expected case
+				resultingError = nil
+			}
+		} else {
+			resultingError = errors.Wrapf(resultingError, "expected initramfs emergency.target error")
+		}
+		errchan <- resultingError
+	}()
+
+	select {
+	case <-ctx.Done():
+		if err := inst.Kill(); err != nil {
+			return errors.Wrapf(err, "failed to kill the vm instance")
+		}
+		return errors.Wrapf(ctx.Err(), "timed out waiting for initramfs error")
+	case err := <-errchan:
+		if err != nil {
+			return err
+		}
+		return nil
+	}
+}
+
+func ignitionFailure(c cluster.TestCluster) error {
+	builder := platform.NewQemuBuilder()
+	defer builder.Close()
+
+	// Prepare Ingnition config
+	failConfig, err := failConfig.Render(conf.FailWarnings)
+	if err != nil {
+		return errors.Wrapf(err, "creating empty config")
+	}
+
+	// Create a temporary log file
+	consoleFile := c.H.TempFile("console-")
+
+	// Instruct builder to use it
+	builder.ConsoleFile = consoleFile.Name()
+	builder.SetConfig(failConfig)
+	err = builder.AddBootDisk(&platform.Disk{
+		BackingFile: kola.QEMUOptions.DiskImage,
+	})
+	if err != nil {
+		return err
+	}
+
+	builder.MemoryMiB = 4096
+	builder.Firmware = kola.QEMUOptions.Firmware
+
+	searchPattern := "Only PBKDF2 is supported in FIPS mode"
+	if err := verifyError(builder, searchPattern); err != nil {
+		return err
+	}
+	return nil
+}