[v3,6/6] libsepol/tests: add cond xperm neverallow tests

Message ID	20241025154824.140073-6-cgoettsche@seltendoof.de (mailing list archive)
State	New
Headers	show Received: from server02.seltendoof.de (server02.seltendoof.de [168.119.48.163]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8EE5A170854 for <selinux@vger.kernel.org>; Fri, 25 Oct 2024 15:48:45 +0000 (UTC) From: =?utf-8?q?Christian_G=C3=B6ttsche?= <cgoettsche@seltendoof.de> To: selinux@vger.kernel.org Cc: =?utf-8?q?Christian_G=C3=B6ttsche?= <cgzones@googlemail.com> Subject: [PATCH v3 6/6] libsepol/tests: add cond xperm neverallow tests Date: Fri, 25 Oct 2024 17:48:24 +0200 Message-ID: <20241025154824.140073-6-cgoettsche@seltendoof.de> In-Reply-To: <20241025154824.140073-1-cgoettsche@seltendoof.de> References: <20241025154824.140073-1-cgoettsche@seltendoof.de> Reply-To: cgzones@googlemail.com Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit
Series	[v3,1/6] libsepol: misc assertion cleanup \| expand [v3,1/6] libsepol: misc assertion cleanup [v3,2/6] libsepol: add support for xperms in conditional policies [v3,3/6] checkpolicy: add support for xperms in conditional policies [v3,4/6] libsepol/cil: add support for xperms in conditional policies [v3,5/6] libsepol: indent printed allow rule on assertion failure [v3,6/6] libsepol/tests: add cond xperm neverallow tests

diff --git a/libsepol/tests/helpers.c b/libsepol/tests/helpers.c index 1192734b..97ddfe8e 100644 --- a/libsepol/tests/helpers.c +++ b/libsepol/tests/helpers.c @@ -53,6 +53,7 @@ int test_load_policy(policydb_t * p, int policy_type, int mls, const char *test_ p->policy_type = policy_type; p->mls = mls; + p->policyvers = MOD_POLICYDB_VERSION_MAX; if (read_source_policy(p, filename, test_name)) { fprintf(stderr, "failed to read policy %s\n", filename); diff --git a/libsepol/tests/policies/test-neverallow/policy_cond.conf b/libsepol/tests/policies/test-neverallow/policy_cond.conf new file mode 100644 index 00000000..c81fc01d --- /dev/null +++ b/libsepol/tests/policies/test-neverallow/policy_cond.conf @@ -0,0 +1,251 @@ +class process +class blk_file +class chr_file +class dir +class fifo_file +class file +class lnk_file +class sock_file + +sid kernel +sid security +sid unlabeled +sid file +sid port +sid netif +sid netmsg +sid node +sid devnull + +class process { dyntransition transition } +class file { getattr ioctl open read write } + +bool boolean1 false; +bool boolean2 true; + +ifdef(`enable_mls',` +sensitivity s0; +dominance { s0 } +category c0; category c1; category c2; category c3; +category c4; category c5; category c6; category c7; +category c8; category c9; category c10; category c11; +category c12; category c13; category c14; category c15; +category c16; category c17; category c18; category c19; +category c20; category c21; category c22; category c23; + +level s0:c0.c23; + +mlsconstrain file { write } ( h1 dom h2 ); +') + + +######################################## +# +# Test start +# +######################################## + + +## Test 1 (basic - fail) + +type test1_t; +if boolean1 { + allow test1_t self : file read; +} +neverallow test1_t * : file *; + + +## Test 2 (basic - fail) + +attribute test2_a; +type test2_1_t, test2_a; +type test2_2_t; +if !boolean1 { + allow test2_1_t test2_1_t : file write; + allow test2_2_t test2_2_t : file write; +} +neverallow test2_a * : file *; + + +## Test 3 (xperm - no xperm in one branch - fail) + +type test3_t; +if boolean1 { + allow test3_t self : file ioctl; +} else { + allowxperm test3_t self : file ioctl 0x1; +} +neverallowxperm test3_t self : file ioctl 0x4; + + +## Test 4 (xperm - xperm in neither branch - fail) + +type test4_t; +allow test4_t self : file ioctl; +if boolean1 { + allow test4_t self : file read; +} else { + allow test4_t self : file write; +} +neverallowxperm test4_t self : file ioctl 0x4; + + +## Test 5 (xperm - xperm in both branches - no failure) + +type test5_t; +allow test5_t self : file ioctl; +if boolean1 { + allowxperm test5_t self : file ioctl 0x1; +} else { + allowxperm test5_t self : file ioctl 0x2; +} +neverallowxperm test5_t self : file ioctl 0x4; # nofail + + +## Test 6 (xperm - failure in one branch - fail) + +type test6_t; +if boolean1 { + allow test6_t self : file ioctl; + allowxperm test6_t self : file ioctl 0x1; +} else { + allow test6_t self : file write; +} +neverallowxperm test6_t self : file ioctl 0x1; + + +## Test 7 (xperm - failure in both branches - fail) + +type test7_t; +if boolean1 { + allow test7_t self : file ioctl; + allowxperm test7_t self : file ioctl 0x1; +} else { + allow test7_t self : file ioctl; + allowxperm test7_t self : file ioctl 0x2; +} +neverallowxperm test7_t self : file ioctl { 0x1-0x2 }; + + +## Test 8 (xperm - different xperm in both branches - no failure) + +type test8_t; +allow test8_t self : file ioctl; +if boolean1 { + allowxperm test8_t self : file ioctl 0x1; +} else { + allowxperm test8_t self : file ioctl 0x2; +} +neverallowxperm test8_t self : file ioctl 0x3; # nofail + + +## Test 9 (xperm - rules split into two booleans - no failure) + +type test9_t; +allow test9_t self : file ioctl; +if boolean1 { + allowxperm test9_t self : file ioctl 0x1; +} +if !boolean2 { + allowxperm test9_t self : file ioctl 0x1; +} +neverallowxperm test9_t self : file ioctl 0x4; + + +## Test 10 (xperm - valid usage in one branch - no failure) + +type test10_t; +if boolean1 { + allow test10_t self : file ioctl; + allowxperm test10_t self : file ioctl 0x1; +} else { + allow test10_t self : file write; +} +neverallowxperm test10_t self : file ioctl 0x2; # nofail + + +## Test 11 (xperm - valid usage in both branches - no failure) + +type test11_t; +if boolean1 { + allow test11_t self : file ioctl; + allowxperm test11_t self : file ioctl 0x1; +} else { + allow test11_t self : file ioctl; + allowxperm test11_t self : file ioctl 0x2; +} +neverallowxperm test11_t self : file ioctl 0x3; # nofail + + +## Test 12 (xperm - base allow in one branch - fail) + +type test12_t; +if boolean1 { + allow test12_t self : file ioctl; +} else { + allow test12_t self : file write; +} +neverallowxperm test12_t self : file ioctl 0x1; + + +## Test 13 (xperm - invalid second branch - fail) + +type test13_t; +allow test13_t self : file ioctl; +if boolean1 { + allow test13_t self : file ioctl; + allowxperm test13_t self : file ioctl 0x1; +} else { + allow test13_t self : file write; +} +neverallowxperm test13_t self : file ioctl 0x1; + + +## Test 14 (xperm - invalid second branch - fail) + +type test14_t; +allow test14_t self : file ioctl; +if boolean1 { + allow test14_t self : file ioctl; + allowxperm test14_t self : file ioctl 0x1; +} else { + allow test14_t self : file write; +} +neverallowxperm test14_t self : file ioctl 0x2; + + +## Test 15 (xperm - base uncond in one branch - fail) + +type test15_t; +allow test15_t self : file ioctl; +allowxperm test15_t self : file ioctl 0x1; +if boolean1 { + allow test15_t self : file ioctl; +} else { + allow test15_t self : file write; +} +neverallowxperm test15_t self : file ioctl 0x2; + + +######################################## +# +# Test End +# +######################################## + + +type sys_isid; +role sys_role; +role sys_role types sys_isid; +gen_user(sys_user,, sys_role, s0, s0 - s0:c0.c23) +sid kernel gen_context(sys_user:sys_role:sys_isid, s0) +sid security gen_context(sys_user:sys_role:sys_isid, s0) +sid unlabeled gen_context(sys_user:sys_role:sys_isid, s0) +sid file gen_context(sys_user:sys_role:sys_isid, s0) +sid port gen_context(sys_user:sys_role:sys_isid, s0) +sid netif gen_context(sys_user:sys_role:sys_isid, s0) +sid netmsg gen_context(sys_user:sys_role:sys_isid, s0) +sid node gen_context(sys_user:sys_role:sys_isid, s0) +sid devnull gen_context(sys_user:sys_role:sys_isid, s0) +fs_use_trans devpts gen_context(sys_user:sys_role:sys_isid, s0); +fs_use_trans devtmpfs gen_context(sys_user:sys_role:sys_isid, s0); diff --git a/libsepol/tests/test-neverallow.c b/libsepol/tests/test-neverallow.c index 80f91bf5..9c3001c4 100644 --- a/libsepol/tests/test-neverallow.c +++ b/libsepol/tests/test-neverallow.c @@ -293,6 +293,58 @@ static void test_neverallow_not_self(void) policydb_destroy(&base_expanded); } +static void test_neverallow_cond(void) +{ + policydb_t basemod, base_expanded; + sepol_handle_t *handle; + static const char *const expected_messages[] = { + "16 neverallow failures occurred", + "neverallow on line 58 of policies/test-neverallow/policy_cond.conf.std (or line 58 of policies/test-neverallow/policy_cond.conf.std) violated by allow test1_t test1_t:file { read };", + "neverallow on line 70 of policies/test-neverallow/policy_cond.conf.std (or line 70 of policies/test-neverallow/policy_cond.conf.std) violated by allow test2_1_t test2_1_t:file { write };", + "neverallowxperm on line 81 of policies/test-neverallow/policy_cond.conf.std (or line 81 of policies/test-neverallow/policy_cond.conf.std) violated by\n allow test3_t test3_t:file { ioctl };", + "neverallowxperm on line 93 of policies/test-neverallow/policy_cond.conf.std (or line 93 of policies/test-neverallow/policy_cond.conf.std) violated by\n allow test4_t test4_t:file { ioctl };", + "neverallowxperm on line 117 of policies/test-neverallow/policy_cond.conf.std (or line 117 of policies/test-neverallow/policy_cond.conf.std) violated by\n allowxperm test6_t test6_t:file ioctl { 0x1 };", + "neverallowxperm on line 130 of policies/test-neverallow/policy_cond.conf.std (or line 130 of policies/test-neverallow/policy_cond.conf.std) violated by\n allowxperm test7_t test7_t:file ioctl { 0x2 };", + "neverallowxperm on line 130 of policies/test-neverallow/policy_cond.conf.std (or line 130 of policies/test-neverallow/policy_cond.conf.std) violated by\n allowxperm test7_t test7_t:file ioctl { 0x1 };", + "neverallowxperm on line 130 of policies/test-neverallow/policy_cond.conf.std (or line 130 of policies/test-neverallow/policy_cond.conf.std) violated by\n allowxperm test7_t test7_t:file ioctl { 0x2 };", + "neverallowxperm on line 130 of policies/test-neverallow/policy_cond.conf.std (or line 130 of policies/test-neverallow/policy_cond.conf.std) violated by\n allowxperm test7_t test7_t:file ioctl { 0x1 };", + "neverallowxperm on line 155 of policies/test-neverallow/policy_cond.conf.std (or line 155 of policies/test-neverallow/policy_cond.conf.std) violated by\n allow test9_t test9_t:file { ioctl };", + "neverallowxperm on line 191 of policies/test-neverallow/policy_cond.conf.std (or line 191 of policies/test-neverallow/policy_cond.conf.std) violated by\n allow test12_t test12_t:file { ioctl };", + "neverallowxperm on line 204 of policies/test-neverallow/policy_cond.conf.std (or line 204 of policies/test-neverallow/policy_cond.conf.std) violated by\n allowxperm test13_t test13_t:file ioctl { 0x1 };", + "neverallowxperm on line 204 of policies/test-neverallow/policy_cond.conf.std (or line 204 of policies/test-neverallow/policy_cond.conf.std) violated by\n allow test13_t test13_t:file { ioctl };", + "neverallowxperm on line 204 of policies/test-neverallow/policy_cond.conf.std (or line 204 of policies/test-neverallow/policy_cond.conf.std) violated by\n allowxperm test13_t test13_t:file ioctl { 0x1 };", + "neverallowxperm on line 217 of policies/test-neverallow/policy_cond.conf.std (or line 217 of policies/test-neverallow/policy_cond.conf.std) violated by\n allow test14_t test14_t:file { ioctl };", + "neverallowxperm on line 230 of policies/test-neverallow/policy_cond.conf.std (or line 230 of policies/test-neverallow/policy_cond.conf.std) violated by\n allow test15_t test15_t:file { ioctl };", + }; + + if (policydb_init(&base_expanded)) + CU_FAIL_FATAL("Failed to initialize policy"); + + if (test_load_policy(&basemod, POLICY_BASE, mls, "test-neverallow", "policy_cond.conf")) + CU_FAIL_FATAL("Failed to load policy"); + + if (link_modules(NULL, &basemod, NULL, 0, 0)) + CU_FAIL_FATAL("Failed to link base module"); + + if (expand_module(NULL, &basemod, &base_expanded, 0, 0)) + CU_FAIL_FATAL("Failed to expand policy"); + + if ((handle = sepol_handle_create()) == NULL) + CU_FAIL_FATAL("Failed to initialize handle"); + + sepol_msg_set_callback(handle, msg_handler, NULL); + + if (check_assertions(handle, &base_expanded, base_expanded.global->branch_list->avrules) != -1) + CU_FAIL("Assertions did not trigger"); + + messages_check(ARRAY_SIZE(expected_messages), expected_messages); + + sepol_handle_destroy(handle); + messages_clean(); + policydb_destroy(&basemod); + policydb_destroy(&base_expanded); +} + int neverallow_add_tests(CU_pSuite suite) { /* @@ -317,5 +369,10 @@ int neverallow_add_tests(CU_pSuite suite) return CU_get_error(); } + if (NULL == CU_add_test(suite, "neverallow_cond", test_neverallow_cond)) { + CU_cleanup_registry(); + return CU_get_error(); + } + return 0; }

[v3,6/6] libsepol/tests: add cond xperm neverallow tests

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Patch