meta-integrity: port over from meta-intel-iot-security

Signed-off-by: Armin Kuster <akuster808@gmail.com>
2026-05-09 17:40:32 +00:00 · 2019-05-16 15:41:49 -07:00
parent 479d9cc23a
commit 6680225c05
30 changed files with 1402 additions and 0 deletions
@@ -0,0 +1,82 @@
+#!/usr/bin/env python
+#
+# Authors:  Cristina Moraru <cristina.moraru@intel.com>
+#           Alexandru Cornea <alexandru.cornea@intel.com>
+
+import unittest
+import string
+from time import sleep
+from oeqa.oetest import oeRuntimeTest, skipModule
+from oeqa.utils.decorators import *
+
+@tag(TestType = 'FVT', FeatureID = 'IOTOS-617,IOTOS-619')
+class IMACheck(oeRuntimeTest):
+    def test_ima_before_systemd(self):
+        ''' Test if IMA policy is loaded before systemd starts'''
+
+        ima_search = "IMA: policy update completed"
+        systemd_search = "systemd .* running"
+        status, output = self.target.run("dmesg | grep -n '%s'" %ima_search)
+        self.assertEqual( status, 0, "Did not find '%s' in dmesg" %ima_search)
+        ima_id = int(output.split(":")[0])
+        status, output = self.target.run("dmesg | grep -n '%s'" %systemd_search)
+        self.assertEqual(status, 0, "Did not find '%s' in dmesg" %systemd_search)
+        init_id = int(output.split(":")[0])
+        if ima_id > init_id:
+            self.fail("IMA does not start before systemd")
+
+    def test_ima_hash(self):
+        ''' Test if IMA stores correct file hash '''
+        filename = "/etc/filetest"
+        ima_measure_file = "/sys/kernel/security/ima/ascii_runtime_measurements"
+        status, output = self.target.run("echo test > %s" %filename)
+        self.assertEqual(status, 0, "Cannot create file %s on target" %filename)
+
+        # wait for the IMA system to update the entry
+        maximum_tries = 30
+        tries = 0
+        status, output = self.target.run("sha1sum %s" %filename)
+        current_hash = output.split()[0]
+        ima_hash = ""
+
+        while tries < maximum_tries:
+            status, output = self.target.run("cat %s | grep %s" \
+                                            %(ima_measure_file, filename))
+            # get last entry, 4th field
+            if status == 0:
+                tokens = output.split("\n")[-1].split()[3]
+                ima_hash = tokens.split(":")[1]
+                if ima_hash == current_hash:
+                    break
+
+            tries += 1
+            sleep(1)
+
+        # clean target
+        self.target.run("rm %s" %filename)
+        if ima_hash != current_hash:
+            self.fail("Hash stored by IMA does not match actual hash")
+
+    def test_ima_signature(self):
+        ''' Test if IMA stores correct signature for system binaries'''
+        locations = ["/bin", "/usr/bin"]
+        binaries = []
+        for l in locations:
+            status, output = self.target.run("find %s -type f" %l)
+            binaries.extend(output.split("\n"))
+
+        for b in binaries:
+            status, output = self.target.run("evmctl ima_verify %s" %b)
+            if "Verification is OK" not in output:
+                self.fail("IMA signature verification fails for file %s" %b)
+
+    def test_ima_overwrite(self):
+        ''' Test if IMA prevents overwriting signed files '''
+        status, output = self.target.run("find /bin -type f")
+        self.assertEqual(status, 0 , "ssh to device fail: %s" %output)  
+        signed_file = output.strip().split()[0]
+        print("\n signed_file is %s" % signed_file)
+        status, output = self.target.run(" echo 'foo' >> %s" %signed_file)
+        self.assertNotEqual(status, 0 , "Signed file could be written")
+        self.assertIn("Permission denied", output,
+                      "Did not find expected error message. Got: %s" %output)