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/**
* @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;
}
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