<def-group>
  <definition class="compliance" id="grub2_kernel_trust_cpu_rng" version="1">
    {{{ oval_metadata("Ensure the kernel is configured to trust the CPU hardware random number generator.") }}}
    <criteria operator="OR" >
      <criteria operator="AND">
        <criterion comment="check if the option is compiled in" test_ref="test_trust_cpu_rng_compiled_in" />
        <criterion comment="check if the option is not overridden through a boot parameter" test_ref="test_trust_cpu_rng_boot_param_off" negate="true" />
      </criteria>
      <criterion comment="check if the option is configured as a boot parameter" test_ref="test_trust_cpu_rng_boot_param_on" />
    </criteria>
  </definition>

  <local_variable id="var_kernel_config_file" comment="the config file for currently running kernel" datatype="string" version="1">
    <concat>
      <literal_component>/boot/config-</literal_component>
      <object_component object_ref="trust_cpu_rng_uname" item_field="os_release" />
    </concat>
  </local_variable>

  <unix:uname_object id="trust_cpu_rng_uname" comment="determine version and build of currently running kernel" version="1" />

  <ind:textfilecontent54_test id="test_trust_cpu_rng_compiled_in" check="all" check_existence="all_exist" version="1" comment="check if the parameter was set at the compile time for current kernel">
    <ind:object object_ref="object_trust_cpu_rng_compiled_in" />
  </ind:textfilecontent54_test>

  <ind:textfilecontent54_object id="object_trust_cpu_rng_compiled_in" version="1">
    <ind:filepath operation="equals" var_ref="var_kernel_config_file" />
    <ind:pattern operation="pattern match">^CONFIG_RANDOM_TRUST_CPU=(y|Y)$</ind:pattern>
    <ind:instance operation="greater than or equal" datatype="int">1</ind:instance>
  </ind:textfilecontent54_object>

  {{% if product in ['rhel9','ol9'] %}}
  <ind:textfilecontent54_test id="test_trust_cpu_rng_boot_param_off"
                              comment="check kernel command line parameters for the argument for all boot entries."
                              check="all" check_existence="all_exist" version="1">
    <ind:object object_ref="obj_grub2_kernel_trust_cpu_rng_entries"/>
    <ind:state state_ref="state_trust_cpu_rng_boot_param_off"/>
  </ind:textfilecontent54_test>

  <ind:textfilecontent54_test id="test_trust_cpu_rng_boot_param_on"
                              comment="check kernel command line parameters for the argument for all boot entries."
                              check="all" check_existence="all_exist" version="1">
    <ind:object object_ref="obj_grub2_kernel_trust_cpu_rng_entries"/>
    <ind:state state_ref="state_trust_cpu_rng_boot_param_on"/>
  </ind:textfilecontent54_test>

  <ind:textfilecontent54_object id="obj_grub2_kernel_trust_cpu_rng_entries" version="1">
    <ind:path>/boot/loader/entries/</ind:path>
    <ind:filename operation="pattern match">^.*\.conf$</ind:filename>
    <ind:pattern operation="pattern match">^options (.*)$</ind:pattern>
    <ind:instance datatype="int">1</ind:instance>
  </ind:textfilecontent54_object>
  {{% else %}}

  <ind:textfilecontent54_test id="test_trust_cpu_rng_boot_param_off"
                              comment="check for kernel command line parameters random.trust_cpu=off in {{{ grub2_boot_path }}}/grubenv for all kernels"
                              check="all" check_existence="all_exist" version="1">
    <ind:object object_ref="object_trust_cpu_rng_boot_param"/>
    <ind:state state_ref="state_trust_cpu_rng_boot_param_off"/>
  </ind:textfilecontent54_test>


  <ind:textfilecontent54_test id="test_trust_cpu_rng_boot_param_on"
  comment="check forkernel command line parameters random.trust_cpu=on in {{{ grub2_boot_path }}}/grubenv for all kernels"
  check="all" check_existence="all_exist" version="1">
    <ind:object object_ref="object_trust_cpu_rng_boot_param" />
    <ind:state state_ref="state_trust_cpu_rng_boot_param_on" />
  </ind:textfilecontent54_test>

  <ind:textfilecontent54_object id="object_trust_cpu_rng_boot_param"
  version="1">
    <ind:filepath>{{{ grub2_boot_path }}}/grubenv</ind:filepath>
    <ind:pattern operation="pattern match">^kernelopts=(.*)$</ind:pattern>
    <ind:instance datatype="int" operation="greater than or equal">1</ind:instance>
  </ind:textfilecontent54_object>
  {{% endif %}}

  <ind:textfilecontent54_state id="state_trust_cpu_rng_boot_param_on"
  version="1">
    <ind:subexpression datatype="string" operation="pattern match">^(?:.*\s)?random\.trust_cpu=on(?:\s.*)?$</ind:subexpression>
  </ind:textfilecontent54_state>

  <ind:textfilecontent54_state id="state_trust_cpu_rng_boot_param_off"
  version="1">
    <ind:subexpression datatype="string" operation="pattern match">^(?:.*\s)?random\.trust_cpu=off(?:\s.*)?$</ind:subexpression>
  </ind:textfilecontent54_state>

</def-group>
