diff options
Diffstat (limited to 'libqpol/src/bool_query.c')
| -rw-r--r-- | libqpol/src/bool_query.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/libqpol/src/bool_query.c b/libqpol/src/bool_query.c new file mode 100644 index 0000000..8814a59 --- /dev/null +++ b/libqpol/src/bool_query.c @@ -0,0 +1,193 @@ +/** + * @file + * Implementation of the interface for searching and iterating over booleans. + * + * @author Kevin Carr kcarr@tresys.com + * @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 <stddef.h> +#include <stdlib.h> +#include <stdint.h> +#include <qpol/iterator.h> +#include <sepol/policydb.h> +#include <sepol/policydb/policydb.h> +#include <sepol/policydb/expand.h> +#include "iterator_internal.h" +#include <qpol/bool_query.h> +#include "qpol_internal.h" + +int qpol_policy_get_bool_by_name(const qpol_policy_t * policy, const char *name, qpol_bool_t ** datum) +{ + hashtab_datum_t internal_datum; + policydb_t *db; + + if (policy == NULL || name == NULL || datum == NULL) { + if (datum != NULL) + *datum = NULL; + ERR(policy, "%s", strerror(EINVAL)); + errno = EINVAL; + return STATUS_ERR; + } + + db = &policy->p->p; + internal_datum = hashtab_search(db->p_bools.table, (const hashtab_key_t)name); + if (internal_datum == NULL) { + ERR(policy, "could not find datum for bool %s", name); + *datum = NULL; + errno = ENOENT; + return STATUS_ERR; + } + *datum = (qpol_bool_t *) internal_datum; + + return STATUS_SUCCESS; +} + +int qpol_policy_get_bool_iter(const qpol_policy_t * policy, qpol_iterator_t ** iter) +{ + policydb_t *db; + hash_state_t *hs = NULL; + int error = 0; + + if (policy == NULL || iter == NULL) { + if (iter != NULL) + *iter = NULL; + ERR(policy, "%s", strerror(EINVAL)); + errno = EINVAL; + return STATUS_ERR; + } + + db = &policy->p->p; + + hs = calloc(1, sizeof(hash_state_t)); + if (hs == NULL) { + error = errno; + ERR(policy, "%s", strerror(ENOMEM)); + errno = error; + return STATUS_ERR; + } + hs->table = &db->p_bools.table; + hs->node = (*(hs->table))->htable[0]; + + if (qpol_iterator_create(policy, (void *)hs, hash_state_get_cur, + hash_state_next, hash_state_end, hash_state_size, free, iter)) { + free(hs); + return STATUS_ERR; + } + + if (hs->node == NULL) + hash_state_next(*iter); + + return STATUS_SUCCESS; +} + +int qpol_bool_get_value(const qpol_policy_t * policy, const qpol_bool_t * datum, uint32_t * value) +{ + cond_bool_datum_t *internal_datum; + + if (policy == NULL || datum == NULL || value == NULL) { + if (value != NULL) + *value = 0; + ERR(policy, "%s", strerror(EINVAL)); + errno = EINVAL; + return STATUS_ERR; + } + + internal_datum = (cond_bool_datum_t *) datum; + *value = internal_datum->s.value; + + return STATUS_SUCCESS; +} + +int qpol_bool_get_state(const qpol_policy_t * policy, const qpol_bool_t * datum, int *state) +{ + cond_bool_datum_t *internal_datum; + + if (policy == NULL || datum == NULL || state == NULL) { + if (state != NULL) + *state = 0; + ERR(policy, "%s", strerror(EINVAL)); + errno = EINVAL; + return STATUS_ERR; + } + + internal_datum = (cond_bool_datum_t *) datum; + *state = internal_datum->state; + + return STATUS_SUCCESS; +} + +int qpol_bool_set_state(qpol_policy_t * policy, qpol_bool_t * datum, int state) +{ + cond_bool_datum_t *internal_datum; + + if (policy == NULL || datum == NULL) { + ERR(policy, "%s", strerror(EINVAL)); + errno = EINVAL; + return STATUS_ERR; + } + + internal_datum = (cond_bool_datum_t *) datum; + internal_datum->state = state; + + /* re-evaluate conditionals to update the state of their rules */ + if (qpol_policy_reevaluate_conds(policy)) { + return STATUS_ERR; /* errno already set */ + } + + return STATUS_SUCCESS; +} + +int qpol_bool_set_state_no_eval(qpol_policy_t * policy, qpol_bool_t * datum, int state) +{ + cond_bool_datum_t *internal_datum; + + if (policy == NULL || datum == NULL) { + ERR(policy, "%s", strerror(EINVAL)); + errno = EINVAL; + return STATUS_ERR; + } + + internal_datum = (cond_bool_datum_t *) datum; + internal_datum->state = state; + + return STATUS_SUCCESS; +} + +int qpol_bool_get_name(const qpol_policy_t * policy, const qpol_bool_t * datum, const char **name) +{ + cond_bool_datum_t *internal_datum = NULL; + policydb_t *db = NULL; + + if (policy == NULL || datum == NULL || name == NULL) { + if (name != NULL) + *name = NULL; + ERR(policy, "%s", strerror(EINVAL)); + errno = EINVAL; + return STATUS_ERR; + } + + db = &policy->p->p; + internal_datum = (cond_bool_datum_t *) datum; + + *name = db->p_bool_val_to_name[internal_datum->s.value - 1]; + + return STATUS_SUCCESS; +} |