diff options
Diffstat (limited to 'libapol/src/isid-query.c')
| -rw-r--r-- | libapol/src/isid-query.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/libapol/src/isid-query.c b/libapol/src/isid-query.c new file mode 100644 index 0000000..9cc6211 --- /dev/null +++ b/libapol/src/isid-query.c @@ -0,0 +1,123 @@ +/** + * @file + * + * Provides a way for setools to make queries about initial SIDs + * 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_isid_query +{ + char *name; + apol_context_t *context; + unsigned int flags; +}; + +/******************** genfscon queries ********************/ + +int apol_isid_get_by_query(const apol_policy_t * p, const apol_isid_query_t * i, apol_vector_t ** v) +{ + qpol_iterator_t *iter; + int retval = -1, retval2; + const qpol_isid_t *isid = NULL; + *v = NULL; + if (qpol_policy_get_isid_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)) { + if (qpol_iterator_get_item(iter, (void **)&isid) < 0) { + goto cleanup; + } + if (i != NULL) { + const char *name; + const qpol_context_t *context; + if (qpol_isid_get_name(p->p, isid, &name) < 0 || qpol_isid_get_context(p->p, isid, &context) < 0) { + goto cleanup; + } + retval2 = apol_compare(p, name, i->name, 0, NULL); + if (retval2 < 0) { + goto cleanup; + } else if (retval2 == 0) { + continue; + } + retval2 = apol_compare_context(p, context, i->context, i->flags); + if (retval2 < 0) { + goto cleanup; + } else if (retval2 == 0) { + continue; + } + } + if (apol_vector_append(*v, (void *)isid)) { + ERR(p, "%s", strerror(ENOMEM)); + goto cleanup; + } + } + + retval = 0; + cleanup: + if (retval != 0) { + apol_vector_destroy(v); + } + qpol_iterator_destroy(&iter); + return retval; +} + +apol_isid_query_t *apol_isid_query_create(void) +{ + return calloc(1, sizeof(apol_isid_query_t)); +} + +void apol_isid_query_destroy(apol_isid_query_t ** i) +{ + if (*i != NULL) { + free((*i)->name); + apol_context_destroy(&((*i)->context)); + free(*i); + *i = NULL; + } +} + +int apol_isid_query_set_name(const apol_policy_t * p, apol_isid_query_t * i, const char *name) +{ + return apol_query_set(p, &i->name, NULL, name); +} + +int apol_isid_query_set_context(const apol_policy_t * p __attribute__ ((unused)), + apol_isid_query_t * i, apol_context_t * context, unsigned int range_match) +{ + if (i->context != NULL) { + apol_context_destroy(&i->context); + } + i->context = context; + i->flags = (i->flags & ~APOL_QUERY_FLAGS) | range_match; + return 0; +} |