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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020-2024 Microsoft Corporation. All rights reserved.
*/
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/list.h>
#include <kunit/test.h>
#include "policy.h"
struct policy_case {
const char *const policy;
int errno;
const char *const desc;
};
static const struct policy_case policy_cases[] = {
{
"policy_name=allowall policy_version=0.0.0\n"
"DEFAULT action=ALLOW",
0,
"basic",
},
{
"policy_name=trailing_comment policy_version=152.0.0 #This is comment\n"
"DEFAULT action=ALLOW",
0,
"trailing comment",
},
{
"policy_name=allowallnewline policy_version=0.2.0\n"
"DEFAULT action=ALLOW\n"
"\n",
0,
"trailing newline",
},
{
"policy_name=carriagereturnlinefeed policy_version=0.0.1\n"
"DEFAULT action=ALLOW\n"
"\r\n",
0,
"clrf newline",
},
{
"policy_name=whitespace policy_version=0.0.0\n"
"DEFAULT\taction=ALLOW\n"
" \t DEFAULT \t op=EXECUTE action=DENY\n"
"op=EXECUTE boot_verified=TRUE action=ALLOW\n"
"# this is a\tcomment\t\t\t\t\n"
"DEFAULT \t op=KMODULE\t\t\t action=DENY\r\n"
"op=KMODULE boot_verified=TRUE action=ALLOW\n",
0,
"various whitespaces and nested default",
},
{
"policy_name=boot_verified policy_version=-1236.0.0\n"
"DEFAULT\taction=ALLOW\n",
-EINVAL,
"negative version",
},
{
"policy_name=$@!*&^%%\\:;{}() policy_version=0.0.0\n"
"DEFAULT action=ALLOW",
0,
"special characters",
},
{
"policy_name=test policy_version=999999.0.0\n"
"DEFAULT action=ALLOW",
-ERANGE,
"overflow version",
},
{
"policy_name=test policy_version=255.0\n"
"DEFAULT action=ALLOW",
-EBADMSG,
"incomplete version",
},
{
"policy_name=test policy_version=111.0.0.0\n"
"DEFAULT action=ALLOW",
-EBADMSG,
"extra version",
},
{
"",
-EBADMSG,
"0-length policy",
},
{
"policy_name=test\0policy_version=0.0.0\n"
"DEFAULT action=ALLOW",
-EBADMSG,
"random null in header",
},
{
"policy_name=test policy_version=0.0.0\n"
"\0DEFAULT action=ALLOW",
-EBADMSG,
"incomplete policy from NULL",
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=DENY\n\0"
"op=EXECUTE dmverity_signature=TRUE action=ALLOW\n",
0,
"NULL truncates policy",
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"op=EXECUTE dmverity_signature=abc action=ALLOW",
-EBADMSG,
"invalid property type",
},
{
"DEFAULT action=ALLOW",
-EBADMSG,
"missing policy header",
},
{
"policy_name=test policy_version=0.0.0\n",
-EBADMSG,
"missing default definition",
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"dmverity_signature=TRUE op=EXECUTE action=ALLOW",
-EBADMSG,
"invalid rule ordering"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"action=ALLOW op=EXECUTE dmverity_signature=TRUE",
-EBADMSG,
"invalid rule ordering (2)",
},
{
"policy_name=test policy_version=0.0\n"
"DEFAULT action=ALLOW\n"
"op=EXECUTE dmverity_signature=TRUE action=ALLOW",
-EBADMSG,
"invalid version",
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"op=UNKNOWN dmverity_signature=TRUE action=ALLOW",
-EBADMSG,
"unknown operation",
},
{
"policy_name=asdvpolicy_version=0.0.0\n"
"DEFAULT action=ALLOW\n",
-EBADMSG,
"missing space after policy name",
},
{
"policy_name=test\xFF\xEF policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"op=EXECUTE dmverity_signature=TRUE action=ALLOW",
0,
"expanded ascii",
},
{
"policy_name=test\xFF\xEF policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"op=EXECUTE dmverity_roothash=GOOD_DOG action=ALLOW",
-EBADMSG,
"invalid property value (2)",
},
{
"policy_name=test policy_version=0.0.0\n"
"policy_name=test policy_version=0.1.0\n"
"DEFAULT action=ALLOW",
-EBADMSG,
"double header"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"DEFAULT action=ALLOW\n",
-EBADMSG,
"double default"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"DEFAULT op=EXECUTE action=DENY\n"
"DEFAULT op=EXECUTE action=ALLOW\n",
-EBADMSG,
"double operation default"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"DEFAULT op=EXECUTE action=DEN\n",
-EBADMSG,
"invalid action value"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"DEFAULT op=EXECUTE action\n",
-EBADMSG,
"invalid action value (2)"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"UNKNOWN value=true\n",
-EBADMSG,
"unrecognized statement"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"op=EXECUTE dmverity_roothash=1c0d7ee1f8343b7fbe418378e8eb22c061d7dec7 action=DENY\n",
-EBADMSG,
"old-style digest"
},
{
"policy_name=test policy_version=0.0.0\n"
"DEFAULT action=ALLOW\n"
"op=EXECUTE fsverity_digest=1c0d7ee1f8343b7fbe418378e8eb22c061d7dec7 action=DENY\n",
-EBADMSG,
"old-style digest"
}
};
static void pol_to_desc(const struct policy_case *c, char *desc)
{
strscpy(desc, c->desc, KUNIT_PARAM_DESC_SIZE);
}
KUNIT_ARRAY_PARAM(ipe_policies, policy_cases, pol_to_desc);
/**
* ipe_parser_unsigned_test - Test the parser by passing unsigned policies.
* @test: Supplies a pointer to a kunit structure.
*
* This is called by the kunit harness. This test does not check the correctness
* of the policy, but ensures that errors are handled correctly.
*/
static void ipe_parser_unsigned_test(struct kunit *test)
{
const struct policy_case *p = test->param_value;
struct ipe_policy *pol;
pol = ipe_new_policy(p->policy, strlen(p->policy), NULL, 0);
if (p->errno) {
KUNIT_EXPECT_EQ(test, PTR_ERR(pol), p->errno);
return;
}
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pol);
KUNIT_EXPECT_NOT_ERR_OR_NULL(test, pol->parsed);
KUNIT_EXPECT_STREQ(test, pol->text, p->policy);
KUNIT_EXPECT_PTR_EQ(test, NULL, pol->pkcs7);
KUNIT_EXPECT_EQ(test, 0, pol->pkcs7len);
ipe_free_policy(pol);
}
/**
* ipe_parser_widestring_test - Ensure parser fail on a wide string policy.
* @test: Supplies a pointer to a kunit structure.
*
* This is called by the kunit harness.
*/
static void ipe_parser_widestring_test(struct kunit *test)
{
const unsigned short policy[] = L"policy_name=Test policy_version=0.0.0\n"
L"DEFAULT action=ALLOW";
struct ipe_policy *pol = NULL;
pol = ipe_new_policy((const char *)policy, (ARRAY_SIZE(policy) - 1) * 2, NULL, 0);
KUNIT_EXPECT_TRUE(test, IS_ERR_OR_NULL(pol));
ipe_free_policy(pol);
}
static struct kunit_case ipe_parser_test_cases[] = {
KUNIT_CASE_PARAM(ipe_parser_unsigned_test, ipe_policies_gen_params),
KUNIT_CASE(ipe_parser_widestring_test),
};
static struct kunit_suite ipe_parser_test_suite = {
.name = "ipe-parser",
.test_cases = ipe_parser_test_cases,
};
kunit_test_suite(ipe_parser_test_suite);
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