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-rw-r--r--sechecker/modules/find_domains.c633
1 files changed, 633 insertions, 0 deletions
diff --git a/sechecker/modules/find_domains.c b/sechecker/modules/find_domains.c
new file mode 100644
index 0000000..b59abac
--- /dev/null
+++ b/sechecker/modules/find_domains.c
@@ -0,0 +1,633 @@
+/**
+ * @file
+ * Implementation of the find domains utility 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 "find_domains.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+static const char *const mod_name = "find_domains";
+
+int find_domains_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;
+ }
+
+ mod = sechk_lib_get_module(mod_name, lib);
+ if (!mod) {
+ ERR(NULL, "%s", "Module has not been run");
+ errno = EINVAL;
+ return -1;
+ }
+ mod->parent_lib = lib;
+
+ /* assign descriptions */
+ mod->brief_description = "utility module";
+ mod->detailed_description =
+ "--------------------------------------------------------------------------------\n"
+ "This is a utility module which finds types in a policy that are treated as a \n"
+ "domain. A type is considered a domain if any of the following is true:\n"
+ "\n"
+ " 1) it has an attribute associated with domains\n"
+ " 2) it is the source of a TE rule for object class other than filesystem\n"
+ " 3) it is the default type in a type_transition rule for object class process \n"
+ " 4) it is associated with a role other than object_r\n";
+ mod->opt_description =
+ "Module requirements:\n"
+ " attribute names\n"
+ "Module dependencies:\n" " none\n" "Module options:\n" " domain_attributes can be set in a profile\n";
+ mod->severity = SECHK_SEV_NONE;
+ /* assign requirements */
+ apol_vector_append(mod->requirements, sechk_name_value_new(SECHK_REQ_POLICY_CAP, SECHK_REQ_CAP_ATTRIB_NAMES));
+
+ /* assign options */
+ apol_vector_append(mod->options, sechk_name_value_new("domain_attribute", "domain"));
+
+ /* 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 = find_domains_init;
+ apol_vector_append(mod->functions, fn_struct);
+
+ 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 = find_domains_run;
+ apol_vector_append(mod->functions, fn_struct);
+
+ mod->data_free = find_domains_data_free;
+
+ 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 = find_domains_print;
+ apol_vector_append(mod->functions, fn_struct);
+
+ fn_struct = sechk_fn_new();
+ if (!fn_struct) {
+ ERR(NULL, "%s", strerror(ENOMEM));
+ errno = ENOMEM;
+ return -1;
+ }
+ fn_struct->name = strdup("get_list");
+ if (!fn_struct->name) {
+ ERR(NULL, "%s", strerror(ENOMEM));
+ errno = ENOMEM;
+ return -1;
+ }
+ fn_struct->fn = find_domains_get_list;
+ apol_vector_append(mod->functions, fn_struct);
+
+ return 0;
+}
+
+int find_domains_init(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused)))
+{
+ sechk_name_value_t *opt = NULL;
+ find_domains_data_t *datum = NULL;
+ size_t i, j;
+ qpol_type_t *attr = NULL;
+ apol_vector_t *attr_vector = NULL;
+ apol_attr_query_t *attr_query = apol_attr_query_create();
+ qpol_policy_t *q = apol_policy_get_qpol(policy);
+
+ 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;
+ }
+
+ datum = find_domains_data_new();
+ if (!datum) {
+ ERR(policy, "%s", strerror(ENOMEM));
+ errno = ENOMEM;
+ return -1;
+ }
+
+ if (!(datum->domain_attribs = apol_vector_create(NULL))) {
+ ERR(policy, "%s", strerror(ENOMEM));
+ errno = ENOMEM;
+ return -1;
+ }
+
+ mod->data = datum;
+
+ for (i = 0; i < apol_vector_get_size(mod->options); i++) {
+ opt = apol_vector_get_element(mod->options, i);
+ if (!strcmp(opt->name, "domain_attribute")) {
+ apol_attr_query_set_attr(policy, attr_query, opt->value);
+ apol_attr_get_by_query(policy, attr_query, &attr_vector);
+ for (j = 0; j < apol_vector_get_size(attr_vector); j++) {
+ const char *domain_attrib;
+ attr = apol_vector_get_element(attr_vector, j);
+ qpol_type_get_name(q, attr, &domain_attrib);
+ if (apol_vector_append(datum->domain_attribs, (void *)domain_attrib) < 0) {
+ apol_vector_destroy(&attr_vector);
+ ERR(policy, "%s", strerror(ENOMEM));
+ errno = ENOMEM;
+ return -1;
+
+ }
+ }
+ apol_vector_destroy(&attr_vector);
+ }
+ }
+ apol_attr_query_destroy(&attr_query);
+ return 0;
+}
+
+int find_domains_run(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused)))
+{
+ int error = 0;
+ sechk_result_t *res = NULL;
+ sechk_item_t *item = NULL;
+ sechk_proof_t *proof = NULL;
+ const char *type_name = NULL;
+ find_domains_data_t *datum = NULL;
+ size_t i, j, proof_idx;
+ apol_vector_t *domain_vector = NULL, *avrule_vector = NULL, *terule_vector = NULL, *role_vector = NULL;
+ apol_terule_query_t *terule_query = NULL;
+ apol_avrule_query_t *avrule_query = NULL;
+ apol_role_query_t *role_query = NULL;
+ qpol_iterator_t *domain_attr_iter = NULL;
+ qpol_policy_t *q = apol_policy_get_qpol(policy);
+
+ if (!mod || !policy) {
+ ERR(policy, "%s", strerror(EINVAL));
+ 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;
+
+ datum = (find_domains_data_t *) mod->data;
+ res = sechk_result_new();
+ if (!res) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ errno = error;
+ return -1;
+ }
+ res->item_type = SECHK_ITEM_TYPE;
+ res->test_name = strdup(mod_name);
+ if (!res->test_name) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+
+ if (!(res->items = apol_vector_create(sechk_item_free))) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+
+ if (apol_type_get_by_query(policy, NULL, &domain_vector) < 0) {
+ goto find_domains_run_fail;
+ }
+
+ for (i = 0; i < apol_vector_get_size(domain_vector); i++) {
+ qpol_type_t *type = apol_vector_get_element(domain_vector, i);
+ qpol_type_get_name(q, type, &type_name);
+
+ if (qpol_type_get_attr_iter(q, type, &domain_attr_iter) < 0) {
+ error = errno;
+ ERR(policy, "Can't get attributes for type %s", type_name);
+ goto find_domains_run_fail;
+ }
+
+ for (; !qpol_iterator_end(domain_attr_iter); qpol_iterator_next(domain_attr_iter)) {
+ const char *attr_name;
+ const qpol_type_t *attr;
+ size_t nfta;
+
+ qpol_iterator_get_item(domain_attr_iter, (void **)&attr);
+ qpol_type_get_name(q, attr, &attr_name);
+ for (nfta = 0; nfta < apol_vector_get_size(datum->domain_attribs); nfta++) {
+ const char *domain_attrib;
+
+ domain_attrib = apol_vector_get_element(datum->domain_attribs, nfta);
+ if (!strcmp(attr_name, domain_attrib)) {
+ proof = sechk_proof_new(NULL);
+ if (!proof) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ proof->type = SECHK_ITEM_ATTRIB;
+ proof->elem = (void *)attr;
+ asprintf(&proof->text, "%s has attribute %s", type_name, attr_name);
+ if (!proof->text) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ if (!item) {
+ item = sechk_item_new(NULL);
+ if (!item) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ item->test_result = 1;
+ }
+ if (!item->proof) {
+ if (!(item->proof = apol_vector_create(sechk_proof_free))) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ }
+ if (apol_vector_append(item->proof, (void *)proof) < 0) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ }
+ }
+ }
+ qpol_iterator_destroy(&domain_attr_iter);
+
+ /* rule src check !filesystem associate */
+ if (!(avrule_query = apol_avrule_query_create())) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ apol_avrule_query_set_source(policy, avrule_query, type_name, 0);
+ if (apol_avrule_get_by_query(policy, avrule_query, &avrule_vector) < 0) {
+ error = errno;
+ ERR(policy, "%s", "Unable to retrieve AV rules");
+ goto find_domains_run_fail;
+ }
+ for (j = 0; j < apol_vector_get_size(avrule_vector); j++) {
+ const qpol_avrule_t *avrule = NULL;
+ const qpol_class_t *class = NULL;
+ const char *class_name = NULL;
+
+ avrule = apol_vector_get_element(avrule_vector, j);
+ qpol_avrule_get_object_class(q, avrule, &class);
+ qpol_class_get_name(q, class, &class_name);
+ if (strcmp("filesystem", class_name)) {
+ proof = sechk_proof_new(NULL);
+ if (!proof) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ proof->type = SECHK_ITEM_AVRULE;
+ proof->text = apol_avrule_render(policy, avrule);
+ if (!item) {
+ item = sechk_item_new(NULL);
+ if (!item) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ item->test_result = 1;
+ }
+ if (!item->proof) {
+ if (!(item->proof = apol_vector_create(sechk_proof_free))) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ }
+ if (apol_vector_append(item->proof, (void *)proof) < 0) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ }
+ }
+ apol_vector_destroy(&avrule_vector);
+ apol_avrule_query_destroy(&avrule_query);
+
+ /* type rule check file object */
+ if (!(terule_query = apol_terule_query_create())) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ apol_terule_query_set_default(policy, terule_query, type_name);
+ apol_terule_query_append_class(policy, terule_query, "process");
+ if (apol_terule_get_by_query(policy, terule_query, &terule_vector) < 0) {
+ error = errno;
+ ERR(policy, "%s", "Unable to retrieve TE rules");
+ goto find_domains_run_fail;
+ }
+ for (j = 0; j < apol_vector_get_size(terule_vector); j++) {
+ qpol_terule_t *terule = NULL;
+ terule = apol_vector_get_element(terule_vector, j);
+
+ if (apol_vector_get_index(item->proof, terule, sechk_proof_with_element_compare, NULL, &proof_idx) == 0)
+ continue;
+
+ proof = sechk_proof_new(NULL);
+ if (!proof) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ proof->type = SECHK_ITEM_TERULE;
+ proof->elem = terule;
+ proof->text = apol_terule_render(policy, terule);
+ if (!item) {
+ item = sechk_item_new(NULL);
+ if (!item) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ item->test_result = 1;
+ }
+ if (!item->proof) {
+ if (!(item->proof = apol_vector_create(sechk_proof_free))) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ }
+ if (apol_vector_append(item->proof, (void *)proof) < 0) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ }
+ apol_vector_destroy(&terule_vector);
+ apol_terule_query_destroy(&terule_query);
+
+ /* Check Roles */
+ if (!(role_query = apol_role_query_create())) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ apol_role_query_set_type(policy, role_query, type_name);
+ apol_role_get_by_query(policy, role_query, &role_vector);
+ for (j = 0; j < apol_vector_get_size(role_vector); j++) {
+ const qpol_role_t *role;
+ const char *role_name;
+
+ role = (qpol_role_t *) apol_vector_get_element(role_vector, j);
+ qpol_role_get_name(q, role, &role_name);
+ if (!strcmp("object_r", role_name))
+ continue;
+ proof = sechk_proof_new(NULL);
+ if (!proof) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ proof->type = SECHK_ITEM_ROLE;
+ proof->elem = (void *)role;
+ asprintf(&proof->text, "role %s types %s;", role_name, type_name);
+ if (!item) {
+ item = sechk_item_new(NULL);
+ if (!item) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ item->test_result = 1;
+ }
+ if (!item->proof) {
+ if (!(item->proof = apol_vector_create(sechk_proof_free))) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+
+ }
+ }
+ if (apol_vector_append(item->proof, (void *)proof) < 0) {
+ error = errno;
+ ERR(policy, "Error: %s\n", strerror(error));
+ goto find_domains_run_fail;
+ }
+ }
+ apol_vector_destroy(&role_vector);
+ apol_role_query_destroy(&role_query);
+
+ /* insert any results for this type */
+ if (item) {
+ item->item = type;
+ if (apol_vector_append(res->items, (void *)item) < 0) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ goto find_domains_run_fail;
+ }
+ }
+ item = NULL;
+ type = NULL;
+ type_name = NULL;
+ }
+ apol_vector_destroy(&domain_vector);
+
+ /* results are valid at this point */
+ mod->result = res;
+ return 0;
+
+ find_domains_run_fail:
+ qpol_iterator_destroy(&domain_attr_iter);
+ apol_vector_destroy(&domain_vector);
+ apol_vector_destroy(&avrule_vector);
+ apol_vector_destroy(&terule_vector);
+ apol_vector_destroy(&role_vector);
+ apol_avrule_query_destroy(&avrule_query);
+ apol_terule_query_destroy(&terule_query);
+ apol_role_query_destroy(&role_query);
+ sechk_proof_free(proof);
+ sechk_item_free(item);
+ sechk_result_destroy(&res);
+ errno = error;
+ return -1;
+}
+
+void find_domains_data_free(void *data)
+{
+ find_domains_data_t *datum = (find_domains_data_t *) data;
+
+ if (datum) {
+ apol_vector_destroy(&datum->domain_attribs);
+ }
+ free(data);
+}
+
+int find_domains_print(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused)))
+{
+ find_domains_data_t *datum = NULL;
+ unsigned char outformat = 0x00;
+ sechk_item_t *item = NULL;
+ size_t i = 0, j = 0, k = 0, l = 0, num_items;
+ sechk_proof_t *proof = NULL;
+ const qpol_type_t *type;
+ qpol_policy_t *q = apol_policy_get_qpol(policy);
+ const char *type_name;
+
+ if (!mod || !policy) {
+ ERR(policy, "%s", strerror(EINVAL));
+ errno = EINVAL;
+ return -1;
+ }
+ if (strcmp("find_domains", mod->name)) {
+ ERR(policy, "Wrong module (%s)", mod->name);
+ errno = EINVAL;
+ return -1;
+ }
+
+ datum = (find_domains_data_t *) mod->data;
+ outformat = mod->outputformat;
+ num_items = apol_vector_get_size(mod->result->items);
+
+ if (!mod->result) {
+ ERR(policy, "%s", "Module has not been run");
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (!outformat || (outformat & SECHK_OUT_QUIET)) {
+ return 0; /* not an error - no output is requested */
+ }
+ if (outformat & SECHK_OUT_STATS) {
+ printf("Found %i domain types.\n", num_items);
+ }
+ if (outformat & SECHK_OUT_PROOF) {
+ printf("\nThe following types are domains.\n");
+ }
+
+ if (outformat & SECHK_OUT_LIST) {
+ printf("\n");
+ for (i = 0; i < num_items; i++) {
+ j++;
+ item = apol_vector_get_element(mod->result->items, i);
+ type = item->item;
+ qpol_type_get_name(q, type, &type_name);
+ j %= 4;
+ printf("%s%s", type_name, (char *)((j && i != num_items - 1) ? ", " : "\n"));
+ }
+ printf("\n");
+ }
+
+ if (outformat & SECHK_OUT_PROOF) {
+ printf("\n");
+ for (k = 0; k < num_items; k++) {
+ item = apol_vector_get_element(mod->result->items, k);
+ if (item) {
+ type = item->item;
+ qpol_type_get_name(q, type, &type_name);
+ printf("%s\n", (char *)type_name);
+ for (l = 0; l < apol_vector_get_size(item->proof); l++) {
+ proof = apol_vector_get_element(item->proof, l);
+ if (proof)
+ printf("\t%s\n", proof->text);
+ }
+ }
+ }
+ printf("\n");
+ }
+
+ return 0;
+}
+
+int find_domains_get_list(sechk_module_t * mod, apol_policy_t * policy, void *arg)
+{
+ apol_vector_t **v = arg;
+
+ if (!mod || !arg) {
+ ERR(policy, "%s", strerror(EINVAL));
+ errno = EINVAL;
+ return -1;
+ }
+ if (strcmp(mod_name, mod->name)) {
+ ERR(policy, "Wrong module (%s)", mod->name);
+ errno = EINVAL;
+ return -1;
+ }
+ if (!mod->result) {
+ ERR(policy, "%s", "Module has not been run");
+ errno = EINVAL;
+ return -1;
+ }
+
+ v = &mod->result->items;
+
+ return 0;
+}
+
+find_domains_data_t *find_domains_data_new(void)
+{
+ find_domains_data_t *datum = NULL;
+
+ datum = (find_domains_data_t *) calloc(1, sizeof(find_domains_data_t));
+
+ return datum;
+}
generated by cgit (git 2.34.1) at 2024-05-03 22:21:56 +0000