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-rw-r--r--libqpol/src/user_query.c224
1 files changed, 224 insertions, 0 deletions
diff --git a/libqpol/src/user_query.c b/libqpol/src/user_query.c
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+/**
+ * @file
+ * Implementation of the interface for searching and iterating over users.
+ *
+ * @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 <config.h>
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <sepol/policydb/policydb.h>
+#include <sepol/policydb/expand.h>
+
+#include <qpol/iterator.h>
+#include <qpol/mls_query.h>
+#include <qpol/policy.h>
+#include <qpol/role_query.h>
+#include <qpol/user_query.h>
+#include "iterator_internal.h"
+#include "qpol_internal.h"
+
+int qpol_policy_get_user_by_name(const qpol_policy_t * policy, const char *name, const qpol_user_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_users.table, (const hashtab_key_t)name);
+ if (internal_datum == NULL) {
+ *datum = NULL;
+ ERR(policy, "could not find datum for user %s", name);
+ errno = ENOENT;
+ return STATUS_ERR;
+ }
+ *datum = (qpol_user_t *) internal_datum;
+
+ return STATUS_SUCCESS;
+}
+
+int qpol_policy_get_user_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_users.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_user_get_value(const qpol_policy_t * policy, const qpol_user_t * datum, uint32_t * value)
+{
+ user_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 = (user_datum_t *) datum;
+ *value = internal_datum->s.value;
+
+ return STATUS_SUCCESS;
+}
+
+int qpol_user_get_role_iter(const qpol_policy_t * policy, const qpol_user_t * datum, qpol_iterator_t ** roles)
+{
+ user_datum_t *internal_datum = NULL;
+ int error = 0;
+ ebitmap_state_t *es = NULL;
+
+ if (policy == NULL || datum == NULL || roles == NULL) {
+ if (roles != NULL)
+ *roles = NULL;
+ ERR(policy, "%s", strerror(EINVAL));
+ errno = EINVAL;
+ return STATUS_ERR;
+ }
+
+ internal_datum = (user_datum_t *) datum;
+
+ es = calloc(1, sizeof(ebitmap_state_t));
+ if (es == NULL) {
+ error = errno;
+ ERR(policy, "%s", strerror(ENOMEM));
+ errno = error;
+ return STATUS_ERR;
+ }
+
+ es->bmap = &(internal_datum->roles.roles);
+ es->cur = es->bmap->node ? es->bmap->node->startbit : 0;
+
+ if (qpol_iterator_create(policy, es, ebitmap_state_get_cur_role,
+ ebitmap_state_next, ebitmap_state_end, ebitmap_state_size, free, roles)) {
+ free(es);
+ return STATUS_ERR;
+ }
+
+ if (es->bmap->node && !ebitmap_get_bit(es->bmap, es->cur))
+ ebitmap_state_next(*roles);
+
+ return STATUS_SUCCESS;
+}
+
+int qpol_user_get_range(const qpol_policy_t * policy, const qpol_user_t * datum, const qpol_mls_range_t ** range)
+{
+ user_datum_t *internal_datum = NULL;
+
+ if (policy == NULL || datum == NULL || range == NULL) {
+ if (range != NULL)
+ *range = NULL;
+ ERR(policy, "%s", strerror(EINVAL));
+ errno = EINVAL;
+ return STATUS_ERR;
+ }
+
+ if (!qpol_policy_has_capability(policy, QPOL_CAP_MLS)) {
+ *range = NULL;
+ } else {
+ internal_datum = (user_datum_t *) datum;
+ *range = (qpol_mls_range_t *) & internal_datum->exp_range;
+ }
+ return STATUS_SUCCESS;
+}
+
+int qpol_user_get_dfltlevel(const qpol_policy_t * policy, const qpol_user_t * datum, const qpol_mls_level_t ** level)
+{
+ user_datum_t *internal_datum = NULL;
+
+ if (policy == NULL || datum == NULL || level == NULL) {
+ if (level != NULL)
+ *level = NULL;
+ ERR(policy, "%s", strerror(EINVAL));
+ errno = EINVAL;
+ return STATUS_ERR;
+ }
+
+ if (!qpol_policy_has_capability(policy, QPOL_CAP_MLS)) {
+ *level = NULL;
+ } else {
+ internal_datum = (user_datum_t *) datum;
+ *level = (qpol_mls_level_t *) & internal_datum->exp_dfltlevel;
+ }
+ return STATUS_SUCCESS;
+}
+
+int qpol_user_get_name(const qpol_policy_t * policy, const qpol_user_t * datum, const char **name)
+{
+ user_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 = (user_datum_t *) datum;
+
+ *name = db->p_user_val_to_name[internal_datum->s.value - 1];
+
+ return STATUS_SUCCESS;
+}
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