| 1 | /* |
| 2 | * QEMU PAM authorization object tests |
| 3 | * |
| 4 | * Copyright (c) 2018 Red Hat, Inc. |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #include "qemu/osdep.h" |
| 22 | #include "qapi/error.h" |
| 23 | #include "qemu/module.h" |
| 24 | #include "authz/pamacct.h" |
| 25 | |
| 26 | #include <security/pam_appl.h> |
| 27 | |
| 28 | static bool failauth; |
| 29 | |
| 30 | /* |
| 31 | * These three functions are exported by libpam.so. |
| 32 | * |
| 33 | * By defining them again here, our impls are resolved |
| 34 | * by the linker instead of those in libpam.so |
| 35 | * |
| 36 | * The test suite is thus isolated from the host system |
| 37 | * PAM setup, so we can do predictable test scenarios |
| 38 | */ |
| 39 | int |
| 40 | pam_start(const char *service_name, const char *user, |
| 41 | const struct pam_conv *pam_conversation, |
| 42 | pam_handle_t **pamh) |
| 43 | { |
| 44 | failauth = true; |
| 45 | if (!g_str_equal(service_name, "qemu-vnc")) { |
| 46 | return PAM_AUTH_ERR; |
| 47 | } |
| 48 | |
| 49 | if (g_str_equal(user, "fred")) { |
| 50 | failauth = false; |
| 51 | } |
| 52 | |
| 53 | *pamh = (pam_handle_t *)0xbadeaffe; |
| 54 | return PAM_SUCCESS; |
| 55 | } |
| 56 | |
| 57 | |
| 58 | int |
| 59 | pam_acct_mgmt(pam_handle_t *pamh, int flags) |
| 60 | { |
| 61 | if (failauth) { |
| 62 | return PAM_AUTH_ERR; |
| 63 | } |
| 64 | |
| 65 | return PAM_SUCCESS; |
| 66 | } |
| 67 | |
| 68 | |
| 69 | int |
| 70 | pam_end(pam_handle_t *pamh, int status) |
| 71 | { |
| 72 | return PAM_SUCCESS; |
| 73 | } |
| 74 | |
| 75 | |
| 76 | static void test_authz_unknown_service(void) |
| 77 | { |
| 78 | Error *local_err = NULL; |
| 79 | QAuthZPAM *auth = qauthz_pam_new("auth0", |
| 80 | "qemu-does-not-exist", |
| 81 | &error_abort); |
| 82 | |
| 83 | g_assert_nonnull(auth); |
| 84 | |
| 85 | g_assert_false(qauthz_is_allowed(QAUTHZ(auth), "fred", &local_err)); |
| 86 | |
| 87 | error_free_or_abort(&local_err); |
| 88 | object_unparent(OBJECT(auth)); |
| 89 | } |
| 90 | |
| 91 | |
| 92 | static void test_authz_good_user(void) |
| 93 | { |
| 94 | QAuthZPAM *auth = qauthz_pam_new("auth0", |
| 95 | "qemu-vnc", |
| 96 | &error_abort); |
| 97 | |
| 98 | g_assert_nonnull(auth); |
| 99 | |
| 100 | g_assert_true(qauthz_is_allowed(QAUTHZ(auth), "fred", &error_abort)); |
| 101 | |
| 102 | object_unparent(OBJECT(auth)); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | static void test_authz_bad_user(void) |
| 107 | { |
| 108 | Error *local_err = NULL; |
| 109 | QAuthZPAM *auth = qauthz_pam_new("auth0", |
| 110 | "qemu-vnc", |
| 111 | &error_abort); |
| 112 | |
| 113 | g_assert_nonnull(auth); |
| 114 | |
| 115 | g_assert_false(qauthz_is_allowed(QAUTHZ(auth), "bob", &local_err)); |
| 116 | |
| 117 | error_free_or_abort(&local_err); |
| 118 | object_unparent(OBJECT(auth)); |
| 119 | } |
| 120 | |
| 121 | |
| 122 | int main(int argc, char **argv) |
| 123 | { |
| 124 | g_test_init(&argc, &argv, NULL); |
| 125 | |
| 126 | module_call_init(MODULE_INIT_QOM); |
| 127 | |
| 128 | g_test_add_func("/auth/pam/unknown-service", test_authz_unknown_service); |
| 129 | g_test_add_func("/auth/pam/good-user", test_authz_good_user); |
| 130 | g_test_add_func("/auth/pam/bad-user", test_authz_bad_user); |
| 131 | |
| 132 | return g_test_run(); |
| 133 | } |