diff options
Diffstat (limited to 'libapol/src/role-query.c')
| -rw-r--r-- | libapol/src/role-query.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/libapol/src/role-query.c b/libapol/src/role-query.c new file mode 100644 index 0000000..aaafe65 --- /dev/null +++ b/libapol/src/role-query.c @@ -0,0 +1,167 @@ +/** + * @file + * + * Provides a way for setools to make queries about roles within a + * policy. The caller obtains a query object, fills in its + * parameters, and then runs the query; it obtains a vector of + * results. Searches are conjunctive -- all fields of the search + * query must match for a datum to be added to the results query. + * + * @author Jeremy A. Mowery jmowery@tresys.com + * @author Jason Tang jtang@tresys.com + * + * Copyright (C) 2006-2007 Tresys Technology, LLC + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "policy-query-internal.h" + +#include <errno.h> + +struct apol_role_query +{ + char *role_name, *type_name; + unsigned int flags; + regex_t *role_regex, *type_regex; +}; + +/******************** role queries ********************/ + +int apol_role_get_by_query(const apol_policy_t * p, apol_role_query_t * r, apol_vector_t ** v) +{ + qpol_iterator_t *iter = NULL, *type_iter = NULL; + int retval = -1, append_role; + *v = NULL; + if (qpol_policy_get_role_iter(p->p, &iter) < 0) { + return -1; + } + if ((*v = apol_vector_create(NULL)) == NULL) { + ERR(p, "%s", strerror(errno)); + goto cleanup; + } + for (; !qpol_iterator_end(iter); qpol_iterator_next(iter)) { + qpol_role_t *role; + if (qpol_iterator_get_item(iter, (void **)&role) < 0) { + goto cleanup; + } + append_role = 1; + if (r != NULL) { + const char *role_name; + int compval; + if (qpol_role_get_name(p->p, role, &role_name) < 0) { + goto cleanup; + } + compval = apol_compare(p, role_name, r->role_name, r->flags, &(r->role_regex)); + if (compval < 0) { + goto cleanup; + } else if (compval == 0) { + continue; + } + if (r->type_name == NULL || r->type_name[0] == '\0') { + goto end_of_query; + } + if (qpol_role_get_type_iter(p->p, role, &type_iter) < 0) { + goto cleanup; + } + append_role = 0; + for (; !qpol_iterator_end(type_iter); qpol_iterator_next(type_iter)) { + qpol_type_t *type; + if (qpol_iterator_get_item(type_iter, (void **)&type) < 0) { + goto cleanup; + } + compval = apol_compare_type(p, type, r->type_name, r->flags, &(r->type_regex)); + if (compval < 0) { + goto cleanup; + } else if (compval == 1) { + append_role = 1; + break; + } + } + qpol_iterator_destroy(&type_iter); + } + end_of_query: + if (append_role && apol_vector_append(*v, role)) { + ERR(p, "%s", strerror(ENOMEM)); + goto cleanup; + } + } + + retval = 0; + cleanup: + if (retval != 0) { + apol_vector_destroy(v); + } + qpol_iterator_destroy(&iter); + qpol_iterator_destroy(&type_iter); + return retval; +} + +apol_role_query_t *apol_role_query_create(void) +{ + return calloc(1, sizeof(apol_role_query_t)); +} + +void apol_role_query_destroy(apol_role_query_t ** r) +{ + if (*r != NULL) { + free((*r)->role_name); + free((*r)->type_name); + apol_regex_destroy(&(*r)->role_regex); + apol_regex_destroy(&(*r)->type_regex); + free(*r); + *r = NULL; + } +} + +int apol_role_query_set_role(const apol_policy_t * p, apol_role_query_t * r, const char *name) +{ + return apol_query_set(p, &r->role_name, &r->role_regex, name); +} + +int apol_role_query_set_type(const apol_policy_t * p, apol_role_query_t * r, const char *name) +{ + return apol_query_set(p, &r->type_name, &r->type_regex, name); +} + +int apol_role_query_set_regex(const apol_policy_t * p, apol_role_query_t * r, int is_regex) +{ + return apol_query_set_regex(p, &r->flags, is_regex); +} + +int apol_role_has_type(const apol_policy_t * p, const qpol_role_t * r, const qpol_type_t * t) +{ + qpol_iterator_t *iter = NULL; + qpol_type_t *tmp_type; + uint32_t type_value, t_type_value; + int retval = -1; + + if (qpol_type_get_value(p->p, t, &t_type_value) < 0 || qpol_role_get_type_iter(p->p, r, &iter) < 0) { + goto cleanup; + } + + for (; !qpol_iterator_end(iter); qpol_iterator_next(iter)) { + qpol_iterator_get_item(iter, (void **)(&tmp_type)); + qpol_type_get_value(p->p, tmp_type, &type_value); + if (t_type_value == type_value) { + retval = 1; + goto cleanup; + } + } + retval = 0; + cleanup: + qpol_iterator_destroy(&iter); + return retval; +} |