/** * @file * Defines the interface for the incomplete domain transition 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 "inc_dom_trans.h" #include #include #include /* 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 = "inc_dom_trans"; /* The register function registers all of a module's functions * with the library. */ int inc_dom_trans_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 the descriptions */ mod->brief_description = "domains with partial transition permissions"; mod->detailed_description = "--------------------------------------------------------------------------------\n" "This module finds potential domain transitions missing key permissions. A valid\n" "domain transition requires the following.\n" "\n" " 1) the starting domain can transition to the end domain for class process\n" " 2) the end domain has some type as an entrypoint\n" " 3) the starting domain can execute that extrypoint type\n" " 4) (optional) a type transition rules specifying these three types\n"; mod->opt_description = "Module requirements:\n" " attribute names\n" "Module dependencies:\n" " find_domains\n" "Module options:\n" " none\n"; mod->severity = SECHK_SEV_MED; /* assign requirements */ if (apol_vector_append(mod->requirements, sechk_name_value_new(SECHK_REQ_POLICY_CAP, SECHK_REQ_CAP_ATTRIB_NAMES)) < 0) { ERR(NULL, "%s", strerror(ENOMEM)); errno = ENOMEM; return -1; } /* Dependencies */ apol_vector_append(mod->dependencies, sechk_name_value_new("module", "find_domains")); /* 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 = inc_dom_trans_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 = inc_dom_trans_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 = inc_dom_trans_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 inc_dom_trans_init(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused))) { if (!mod || !policy) { ERR(policy, "%s", "Invalid paramaters"); 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; } /* wrapper for apol_domain_trans_result_destroy() */ void dtr_free_wrap(void *x) { apol_domain_trans_result_destroy((apol_domain_trans_result_t **) & x); } /* The run function performs the check. This function runs only once * even if called multiple times. */ int inc_dom_trans_run(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused))) { sechk_result_t *res = NULL; sechk_item_t *item = NULL, *tmp_item = NULL; sechk_proof_t *proof = NULL; size_t i, j, k, retv; sechk_module_t *mod_ptr = NULL; sechk_mod_fn_t run_fn = NULL; sechk_result_t *find_domains_res = NULL; apol_domain_trans_analysis_t *domain_trans = NULL; apol_vector_t *domain_vector = NULL, *role_vector = NULL, *user_vector = NULL, *rbac_vector = NULL; apol_vector_t *domain_trans_vector = NULL, *role_allow_vector = NULL; apol_user_query_t *user_query = NULL; apol_role_query_t *start_role_query = NULL, *end_role_query = NULL; apol_role_trans_query_t *role_trans_query = NULL; apol_role_allow_query_t *role_allow_query = NULL; char *buff = NULL; int buff_sz, error = 0; const qpol_type_t *domain = NULL; qpol_policy_t *q = apol_policy_get_qpol(policy); const char *domain_name = NULL; 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; } /* if already run return */ if (mod->result) return 0; res = sechk_result_new(); if (!res) { ERR(policy, "%s", strerror(ENOMEM)); errno = EINVAL; return -1; } res->test_name = strdup(mod_name); if (!res->test_name) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } res->item_type = SECHK_ITEM_DTR; if (!(res->items = apol_vector_create(sechk_item_free))) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_policy_build_domain_trans_table(policy) < 0) { error = errno; ERR(policy, "%s", "Unable to build domain transition table"); goto inc_dom_trans_run_fail; } if (!(domain_trans = apol_domain_trans_analysis_create())) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(user_query = apol_user_query_create())) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(role_trans_query = apol_role_trans_query_create())) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(role_allow_query = apol_role_allow_query_create())) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(start_role_query = apol_role_query_create())) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(end_role_query = apol_role_query_create())) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } run_fn = sechk_lib_get_module_function("find_domains", SECHK_MOD_FN_RUN, mod->parent_lib); if (!run_fn) { error = errno; goto inc_dom_trans_run_fail; } retv = run_fn((mod_ptr = sechk_lib_get_module("find_domains", mod->parent_lib)), policy, NULL); if (retv) { error = errno; ERR(policy, "%s", "Unable to find module find_domains"); goto inc_dom_trans_run_fail; } if (!(find_domains_res = sechk_lib_get_module_result("find_domains", mod->parent_lib))) { error = errno; ERR(policy, "%s", "Unable to get results from module find_domains"); goto inc_dom_trans_run_fail; } domain_vector = (apol_vector_t *) find_domains_res->items; for (i = 0; i < apol_vector_get_size(domain_vector); i++) { tmp_item = apol_vector_get_element(domain_vector, i); domain = tmp_item->item; qpol_type_get_name(q, domain, &domain_name); apol_domain_trans_analysis_set_start_type(policy, domain_trans, domain_name); apol_domain_trans_analysis_set_direction(policy, domain_trans, APOL_DOMAIN_TRANS_DIRECTION_FORWARD); apol_domain_trans_analysis_set_valid(policy, domain_trans, APOL_DOMAIN_TRANS_SEARCH_BOTH); apol_domain_trans_analysis_do(policy, domain_trans, &domain_trans_vector); for (j = 0; j < apol_vector_get_size(domain_trans_vector); j++) { apol_domain_trans_result_t *dtr = NULL; const qpol_type_t *start; const qpol_type_t *ep; const qpol_type_t *end; const char *start_name; const char *end_name; const char *ep_name; int result; bool ok; ok = false; dtr = apol_vector_get_element(domain_trans_vector, j); start = apol_domain_trans_result_get_start_type(dtr); ep = apol_domain_trans_result_get_entrypoint_type(dtr); end = apol_domain_trans_result_get_end_type(dtr); if (start) qpol_type_get_name(q, start, &start_name); else start_name = ""; if (end) qpol_type_get_name(q, end, &end_name); else end_name = ""; if (ep) qpol_type_get_name(q, ep, &ep_name); else ep_name = ""; result = apol_domain_trans_table_verify_trans(policy, start, ep, end); if (!result) { apol_vector_t *start_role_vector, *end_role_vector, *common_role_vector; apol_role_query_set_type(policy, start_role_query, start_name); apol_role_get_by_query(policy, start_role_query, &start_role_vector); apol_role_query_set_type(policy, end_role_query, end_name); apol_role_get_by_query(policy, end_role_query, &end_role_vector); if (!apol_vector_get_size(start_role_vector) || !apol_vector_get_size(end_role_vector)) { item = sechk_item_new(dtr_free_wrap); if (!item) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } item->test_result = 1; item->item = (void *)apol_domain_trans_result_create_from_domain_trans_result(dtr); if (apol_vector_append(res->items, (void *)item) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(item->proof = apol_vector_create(sechk_proof_free))) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!apol_vector_get_size(start_role_vector)) { proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; asprintf(&proof->text, "Need role for %s", start_name); if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } if (!apol_vector_get_size(end_role_vector)) { proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; asprintf(&proof->text, "Need role for %s", end_name); if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } item = NULL; //if one of the domains has no roles continue; no more can be determined apol_vector_destroy(&start_role_vector); apol_vector_destroy(&end_role_vector); continue; } common_role_vector = apol_vector_create_from_intersection(start_role_vector, end_role_vector, NULL, NULL); const char *role_name = NULL; if (apol_vector_get_size(common_role_vector)) { for (int k = 0; k < apol_vector_get_size(common_role_vector); k++) { const qpol_role_t *common_role; common_role = apol_vector_get_element(common_role_vector, k); qpol_role_get_name(q, common_role, &role_name); apol_user_query_set_role(policy, user_query, role_name); apol_user_get_by_query(policy, user_query, &user_vector); if (apol_vector_get_size(user_vector)) { ok = true; apol_vector_destroy(&user_vector); break; } apol_vector_destroy(&user_vector); } if (!ok) { item = sechk_item_new(dtr_free_wrap); if (!item) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } item->test_result = 1; item->item = (void *)apol_domain_trans_result_create_from_domain_trans_result(dtr); if (apol_vector_append(res->items, (void *)item) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(item->proof = apol_vector_create(sechk_proof_free))) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; asprintf(&proof->text, "Need user for role %s", role_name); if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } item = NULL; } } else { apol_vector_t *role_trans_vector; bool need_ra = 0, need_user = 0; char *rastring = NULL, *userstring = NULL; apol_role_trans_query_set_target(policy, role_trans_query, ep_name, 1); apol_role_trans_get_by_query(policy, role_trans_query, &role_trans_vector); const char *source_role_name = NULL, *default_role_name = NULL; for (k = 0; k < apol_vector_get_size(role_trans_vector); k++) { qpol_role_trans_t *role_trans; const qpol_role_t *source_role; const qpol_role_t *default_role; int index; role_trans = apol_vector_get_element(role_trans_vector, k); qpol_role_trans_get_source_role(q, role_trans, &source_role); qpol_role_trans_get_default_role(q, role_trans, &default_role); if ((apol_vector_get_index(start_role_vector, source_role, NULL, NULL, &index) == 0) && (apol_vector_get_index(end_role_vector, default_role, NULL, NULL, &index) == 0)) { apol_vector_t *source_role_user, *default_role_user, *common_role_user; qpol_role_get_name(q, source_role, &source_role_name); qpol_role_get_name(q, default_role, &default_role_name); apol_role_allow_query_set_source(policy, role_allow_query, source_role_name); apol_role_allow_query_set_target(policy, role_allow_query, default_role_name); apol_role_allow_get_by_query(policy, role_allow_query, &role_allow_vector); apol_user_query_set_role(policy, user_query, source_role_name); apol_user_get_by_query(policy, user_query, &source_role_user); apol_user_query_set_role(policy, user_query, default_role_name); apol_user_get_by_query(policy, user_query, &default_role_user); common_role_user = apol_vector_create_from_intersection(source_role_user, default_role_user, NULL, NULL); apol_vector_destroy(&source_role_user); apol_vector_destroy(&default_role_user); if (apol_vector_get_size(role_allow_vector) && apol_vector_get_size(common_role_user)) { ok = true; apol_vector_destroy(&role_allow_vector); apol_vector_destroy(&common_role_user); break; } if (!apol_vector_get_size(role_allow_vector)) { // need role allow; asprintf(&rastring, "allow %s %s;", source_role_name, default_role_name); if (!rastring) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } apol_vector_destroy(&role_allow_vector); if (!apol_vector_get_size(common_role_user)) { // need user; asprintf(&userstring, "need user with roles %s and %s", source_role_name, default_role_name); if (!userstring) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } apol_vector_destroy(&common_role_user); } } apol_vector_destroy(&role_trans_vector); if (!ok) { if (!need_ra && !need_user) { const qpol_role_t *source_role = apol_vector_get_element(start_role_vector, 0); const qpol_role_t *default_role = apol_vector_get_element(end_role_vector, 0); qpol_role_get_name(q, source_role, &source_role_name); qpol_role_get_name(q, default_role, &default_role_name); // need role_transition item = sechk_item_new(dtr_free_wrap); if (!item) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } item->test_result = 1; item->item = (void *) apol_domain_trans_result_create_from_domain_trans_result(dtr); if (apol_vector_append(res->items, (void *)item) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(item->proof = apol_vector_create(sechk_proof_free))) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; asprintf(&proof->text, "role_transition %s %s %s;", source_role_name, ep_name, default_role_name); if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } item = NULL; } else { //create item item = sechk_item_new(dtr_free_wrap); if (!item) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } item->test_result = 1; item->item = (void *) apol_domain_trans_result_create_from_domain_trans_result(dtr); if (apol_vector_append(res->items, (void *)item) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(item->proof = apol_vector_create(sechk_proof_free))) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (need_ra) { //create proof w/ text rastring proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; proof->text = rastring; rastring = NULL; if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } if (need_user) { //create proof w/ text userstring proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; proof->text = userstring; userstring = NULL; if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } item = NULL; } } } apol_vector_destroy(&start_role_vector); apol_vector_destroy(&end_role_vector); apol_vector_destroy(&common_role_vector); } else { item = sechk_item_new(dtr_free_wrap); if (!item) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } item->test_result = 1; item->item = (void *)apol_domain_trans_result_create_from_domain_trans_result(dtr); if (apol_vector_append(res->items, (void *)item) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (!(item->proof = apol_vector_create(sechk_proof_free))) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (result & APOL_DOMAIN_TRANS_RULE_PROC_TRANS) { proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; buff = NULL; buff_sz = 10 + strlen("allow : process transition;") + strlen(start_name) + strlen(end_name); buff = (char *)calloc(buff_sz, sizeof(char)); if (!buff) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } snprintf(buff, buff_sz, "allow %s %s : process transition;", start_name, end_name); proof->text = strdup(buff); free(buff); buff = NULL; if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } if (result & APOL_DOMAIN_TRANS_RULE_EXEC) { proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; buff = NULL; buff_sz = 10 + strlen("allow : file execute;") + strlen(start_name) + strlen(ep_name); buff = (char *)calloc(buff_sz, sizeof(char)); if (!buff) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } snprintf(buff, buff_sz, "allow %s %s : file execute;", start_name, ep_name); proof->text = strdup(buff); free(buff); buff = NULL; if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } if (result & APOL_DOMAIN_TRANS_RULE_ENTRYPOINT) { proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; buff = NULL; buff_sz = 10 + strlen("allow : file entrypoint;") + strlen(end_name) + strlen(ep_name); buff = (char *)calloc(buff_sz, sizeof(char)); if (!buff) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } snprintf(buff, buff_sz, "allow %s %s : file entrypoint;", end_name, ep_name); proof->text = strdup(buff); free(buff); buff = NULL; if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } if (result & APOL_DOMAIN_TRANS_RULE_TYPE_TRANS) { proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; buff = NULL; buff_sz = 10 + strlen("type_transition :process ;") + strlen(start_name) + strlen(end_name) + strlen(ep_name); buff = (char *)calloc(buff_sz, sizeof(char)); if (!buff) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } snprintf(buff, buff_sz, "type_transition %s %s : process %s;", start_name, ep_name, end_name); proof->text = strdup(buff); free(buff); buff = NULL; if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } if (result & APOL_DOMAIN_TRANS_RULE_SETEXEC) { proof = sechk_proof_new(NULL); proof->type = SECHK_ITEM_OTHER; buff = NULL; buff_sz = 10 + strlen("allow self : process setexec;") + strlen(start_name); buff = (char *)calloc(buff_sz, sizeof(char)); if (!buff) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } snprintf(buff, buff_sz, "allow %s self : process setexec;", start_name); proof->text = strdup(buff); free(buff); buff = NULL; if (!proof->text) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } if (apol_vector_append(item->proof, (void *)proof) < 0) { error = errno; ERR(policy, "%s", strerror(ENOMEM)); goto inc_dom_trans_run_fail; } } } } apol_vector_destroy(&domain_trans_vector); } mod->result = res; apol_domain_trans_analysis_destroy(&domain_trans); apol_user_query_destroy(&user_query); apol_role_trans_query_destroy(&role_trans_query); apol_role_query_destroy(&start_role_query); apol_role_query_destroy(&end_role_query); apol_role_allow_query_destroy(&role_allow_query); if (apol_vector_get_size(res->items)) return 1; return 0; inc_dom_trans_run_fail: sechk_item_free(item); apol_vector_destroy(&user_vector); apol_vector_destroy(&domain_trans_vector); sechk_result_destroy(&res); errno = error; return -1; } /* The print output function generates the text printed in the * report and prints it to stdout. */ int inc_dom_trans_print(sechk_module_t * mod, apol_policy_t * policy, void *arg __attribute__ ((unused))) { unsigned char outformat = 0x00; sechk_item_t *item = NULL; qpol_policy_t *q = apol_policy_get_qpol(policy); size_t i = 0, j = 0, num_items; 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 (!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 incomplete transitions.\n", num_items); } /* The list report component is a display of all items * found without any supporting proof. */ if (outformat & SECHK_OUT_LIST) { /* * printf("\nStart Type\t\tEntrypoint\t\tEnd Type\t\tMissing Rules\n"); * printf("----------\t\t----------\t\t--------\t\t-------------\n"); */ printf("\n"); for (i = 0; i < num_items; i++) { const qpol_type_t *start; const qpol_type_t *end; const qpol_type_t *ep; const char *start_name, *end_name, *ep_name; apol_domain_trans_result_t *dtr; item = apol_vector_get_element(mod->result->items, i); dtr = item->item; start = apol_domain_trans_result_get_start_type(dtr); ep = apol_domain_trans_result_get_entrypoint_type(dtr); end = apol_domain_trans_result_get_end_type(dtr); if (start) qpol_type_get_name(q, start, &start_name); else start_name = ""; if (end) qpol_type_get_name(q, end, &end_name); else end_name = ""; if (ep) qpol_type_get_name(q, ep, &ep_name); else ep_name = ""; printf("%s -> %s\tentrypoint: %s\n", start_name, end_name, ep_name); } printf("\n"); } /* The proof report component is a display of a list of items * with an indented list of proof statements supporting the result * of the check for that item (e.g. rules with a given type) */ if (outformat & SECHK_OUT_PROOF) { printf("\n"); for (i = 0; i < num_items; i++) { const qpol_type_t *start; const qpol_type_t *end; const qpol_type_t *ep; const char *start_name, *end_name, *ep_name; apol_domain_trans_result_t *dtr; item = apol_vector_get_element(mod->result->items, i); dtr = item->item; start = apol_domain_trans_result_get_start_type(dtr); ep = apol_domain_trans_result_get_entrypoint_type(dtr); end = apol_domain_trans_result_get_end_type(dtr); if (start) qpol_type_get_name(q, start, &start_name); else start_name = ""; if (end) qpol_type_get_name(q, end, &end_name); else end_name = ""; if (ep) qpol_type_get_name(q, ep, &ep_name); else ep_name = ""; printf("%s -> %s\tentrypoint: %s\n\tMissing:\n", start_name, end_name, ep_name); for (j = 0; j < apol_vector_get_size(item->proof); j++) { sechk_proof_t *proof; proof = apol_vector_get_element(item->proof, j); if (proof) { printf("\t%s\n", proof->text); } } } } return 0; }