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author | Miroslav Grepl <mgrepl@redhat.com> | 2014-04-11 09:37:53 +0200 |
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committer | Miroslav Grepl <mgrepl@redhat.com> | 2014-04-11 09:37:53 +0200 |
commit | 47be9ff57e72906660bb62a515222f482131e1fb (patch) | |
tree | 2cb0ef0ba48d73b1df7cc0915754a17e19464bb6 /sechecker/modules/roles_wo_types.c | |
download | setools-47be9ff57e72906660bb62a515222f482131e1fb.tar.gz setools-47be9ff57e72906660bb62a515222f482131e1fb.tar.xz setools-47be9ff57e72906660bb62a515222f482131e1fb.zip |
Create setools-3.3.7 git repomaster
Diffstat (limited to 'sechecker/modules/roles_wo_types.c')
-rw-r--r-- | sechecker/modules/roles_wo_types.c | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/sechecker/modules/roles_wo_types.c b/sechecker/modules/roles_wo_types.c new file mode 100644 index 0000000..ed38580 --- /dev/null +++ b/sechecker/modules/roles_wo_types.c @@ -0,0 +1,330 @@ +/** + * @file + * Implementation of the roles without types module. + * + * @author Kevin Carr kcarr@tresys.com + * @author Jeremy A. Mowery jmowery@tresys.com + * @author Jason Tang jtang@tresys.com + * + * Copyright (C) 2005-2007 Tresys Technology, LLC + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "roles_wo_types.h" + +#include <stdio.h> +#include <string.h> +#include <errno.h> + +/* This string is the name of the module and should match the stem + * of the file name; it should also match the prefix of all functions + * defined in this module and the private data storage structure */ +static const char *const mod_name = "roles_wo_types"; + +/* The register function registers all of a module's functions + * with the library. */ +int roles_wo_types_register(sechk_lib_t * lib) +{ + sechk_module_t *mod = NULL; + sechk_fn_t *fn_struct = NULL; + + if (!lib) { + ERR(NULL, "%s", "No library"); + errno = EINVAL; + return -1; + } + + /* Modules are declared by the config file and their name and options + * are stored in the module array. The name is looked up to determine + * where to store the function structures */ + mod = sechk_lib_get_module(mod_name, lib); + if (!mod) { + ERR(NULL, "%s", "Module unknown"); + errno = EINVAL; + return -1; + } + mod->parent_lib = lib; + + /* assign descriptions */ + mod->brief_description = "roles with no types"; + mod->detailed_description = + "--------------------------------------------------------------------------------\n" + "This module finds roles in the policy that have no types. A role with no types \n" + "cannot form a valid context.\n"; + mod->opt_description = + "Module requirements:\n" " none\n" "Module dependencies:\n" " none\n" "Module options:\n" " none\n"; + mod->severity = SECHK_SEV_LOW; + /* register functions */ + fn_struct = sechk_fn_new(); + if (!fn_struct) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + fn_struct->name = strdup(SECHK_MOD_FN_INIT); + if (!fn_struct->name) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + fn_struct->fn = roles_wo_types_init; + if (apol_vector_append(mod->functions, (void *)fn_struct) < 0) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + + fn_struct = sechk_fn_new(); + if (!fn_struct) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + fn_struct->name = strdup(SECHK_MOD_FN_RUN); + if (!fn_struct->name) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + fn_struct->fn = roles_wo_types_run; + if (apol_vector_append(mod->functions, (void *)fn_struct) < 0) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + + mod->data_free = NULL; + + fn_struct = sechk_fn_new(); + if (!fn_struct) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + fn_struct->name = strdup(SECHK_MOD_FN_PRINT); + if (!fn_struct->name) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + fn_struct->fn = roles_wo_types_print; + if (apol_vector_append(mod->functions, (void *)fn_struct) < 0) { + ERR(NULL, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + + return 0; +} + +/* The init function creates the module's private data storage object + * and initializes its values based on the options parsed in the config + * file. */ +int roles_wo_types_init(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused))) +{ + if (!mod || !policy) { + ERR(policy, "%s", "Ivalid parameters"); + errno = EINVAL; + return -1; + } + if (strcmp(mod_name, mod->name)) { + ERR(policy, "Wrong module (%s)", mod->name); + errno = EINVAL; + return -1; + } + + mod->data = NULL; + + return 0; +} + +/* The run function performs the check. This function runs only once + * even if called multiple times. This function allocates the result + * structure and fills in all relavant item and proof data. */ +int roles_wo_types_run(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused))) +{ + sechk_result_t *res = NULL; + sechk_item_t *item = NULL; + sechk_proof_t *proof = NULL; + size_t i; + apol_vector_t *role_vector; + qpol_iterator_t *type_iter = NULL; + int error = 0; + + if (!mod || !policy) { + ERR(policy, "%s", "Ivalid parameters"); + errno = EINVAL; + return -1; + } + if (strcmp(mod_name, mod->name)) { + ERR(policy, "Wrong module (%s)", mod->name); + errno = EINVAL; + return -1; + } + + /* if already run return */ + if (mod->result) + return 0; + + res = sechk_result_new(); + if (!res) { + ERR(policy, "%s", strerror(ENOMEM)); + errno = ENOMEM; + return -1; + } + res->test_name = strdup(mod_name); + if (!res->test_name) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + res->item_type = SECHK_ITEM_ROLE; + if (!(res->items = apol_vector_create(sechk_item_free))) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + + if (apol_role_get_by_query(policy, NULL, &role_vector) < 0) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + + for (i = 0; i < apol_vector_get_size(role_vector); i++) { + const qpol_role_t *role; + const char *role_name; + int at_end; + + role = apol_vector_get_element(role_vector, i); + qpol_role_get_name(apol_policy_get_qpol(policy), role, &role_name); + + if (!strcmp(role_name, "object_r")) + continue; + + qpol_role_get_type_iter(apol_policy_get_qpol(policy), role, &type_iter); + at_end = qpol_iterator_end(type_iter); + qpol_iterator_destroy(&type_iter); + if (!at_end) + continue; + + proof = sechk_proof_new(NULL); + if (!proof) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + proof->type = SECHK_ITEM_ROLE; + asprintf(&proof->text, "role %s has no types", role_name); + item = sechk_item_new(NULL); + if (!item) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + item->item = (void *)role; + item->test_result = 1; + if (!item->proof) { + if (!(item->proof = apol_vector_create(sechk_proof_free))) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + } + if (apol_vector_append(item->proof, (void *)proof) < 0) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + if (apol_vector_append(res->items, (void *)item) < 0) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + goto roles_wo_types_run_fail; + } + } + apol_vector_destroy(&role_vector); + + mod->result = res; + + if (apol_vector_get_size(res->items)) + return 1; + return 0; + + roles_wo_types_run_fail: + sechk_proof_free(proof); + sechk_item_free(item); + sechk_result_destroy(&res); + errno = error; + return -1; +} + +/* The print function generates the text printed in the + * report and prints it to stdout. */ +int roles_wo_types_print(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused))) +{ + unsigned char outformat = 0x00; + sechk_item_t *item = NULL; + size_t i = 0, j = 0, num_items; + const qpol_role_t *role; + const char *role_name; + + if (!mod || !policy) { + ERR(policy, "%s", "Invalid parameters"); + errno = EINVAL; + return -1; + } + if (strcmp(mod_name, mod->name)) { + ERR(policy, "Wrong module (%s)", mod->name); + errno = EINVAL; + return -1; + } + + outformat = mod->outputformat; + num_items = apol_vector_get_size(mod->result->items); + + if (!outformat || (outformat & SECHK_OUT_QUIET)) + return 0; /* not an error - no output is requested */ + + if (!mod->result) { + ERR(policy, "%s", "Module has not been run"); + errno = EINVAL; + return -1; + } + + /* display the statistics of the results */ + if (outformat & SECHK_OUT_STATS) { + printf("Found %zd roles.\n", num_items); + } + if (outformat & SECHK_OUT_PROOF) { + printf("\nThe following roles have no associated types:\n"); + } + /* The list report component is a display of all items + * found without any supporting proof. */ + if (outformat & (SECHK_OUT_LIST | SECHK_OUT_PROOF)) { + printf("\n"); + for (i = 0; i < num_items; i++) { + j++; + j %= 4; + item = apol_vector_get_element(mod->result->items, i); + role = (qpol_role_t *) item->item; + qpol_role_get_name(apol_policy_get_qpol(policy), role, &role_name); + printf("%s%s", role_name, (char *)((j && i != num_items - 1) ? ", " : "\n")); + } + printf("\n"); + } + + return 0; +} |