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selinux/policycoreutils/sepolicy/search.c

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// Author: Thomas Liu <tliu@redhat.com>
/**
* @file
* Python bindings used to search TE rules.
*
* @author Thomas Liu <tliu@redhat.com>
* @author Dan Walsh <dwalsh@redhat.com>
* Copyright (C) 2012-2013 Red Hat, inc
*
* Sections copied from sesearch.c in setools package
* @author Frank Mayer mayerf@tresys.com
* @author Jeremy A. Mowery jmowery@tresys.com
* @author Paul Rosenfeld prosenfeld@tresys.com
* Copyright (C) 2003-2008 Tresys Technology, LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* This is a modified version of sesearch to be used as part of a sepython library for
* Python bindings.
*/
#include "common.h"
#include "policy.h"
/* libapol */
#include <apol/policy-query.h>
#include <apol/render.h>
#include <apol/util.h>
#include <apol/vector.h>
/* libqpol*/
#include <qpol/policy.h>
#include <qpol/policy_extend.h>
#include <qpol/syn_rule_query.h>
#include <qpol/util.h>
/* other */
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <getopt.h>
#include <string.h>
#include <stdbool.h>
#define COPYRIGHT_INFO "Copyright (C) 2012 Red Hat, Inc, Tresys Technology, LLC"
enum opt_values
{
RULE_NEVERALLOW = 256, RULE_AUDIT, RULE_AUDITALLOW, RULE_DONTAUDIT,
RULE_ROLE_ALLOW, RULE_ROLE_TRANS, RULE_RANGE_TRANS, RULE_ALL,
EXPR_ROLE_SOURCE, EXPR_ROLE_TARGET
};
;
typedef struct options
{
char *src_name;
char *tgt_name;
char *src_role_name;
char *tgt_role_name;
char *class_name;
char *permlist;
char *bool_name;
apol_vector_t *class_vector;
bool all;
bool lineno;
bool semantic;
bool indirect;
bool allow;
bool nallow;
bool auditallow;
bool dontaudit;
bool type;
bool rtrans;
bool role_allow;
bool role_trans;
bool useregex;
bool show_cond;
apol_vector_t *perm_vector;
} options_t;
static int py_tuple_insert_obj(PyObject *tuple, int pos, PyObject *obj)
{
int rt;
if (!obj) return -1;
rt = PyTuple_SetItem(tuple, pos, obj);
return rt;
}
static int perform_ra_query(const apol_policy_t * policy, const options_t * opt, apol_vector_t ** v)
{
apol_role_allow_query_t *raq = NULL;
int error = 0;
if (!policy || !opt || !v) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return -1;
}
if (!opt->role_allow && !opt->all) {
*v = NULL;
return 0; /* no search to do */
}
raq = apol_role_allow_query_create();
if (!raq) {
ERR(policy, "%s", strerror(ENOMEM));
errno = ENOMEM;
return -1;
}
apol_role_allow_query_set_regex(policy, raq, opt->useregex);
if (opt->src_role_name) {
if (apol_role_allow_query_set_source(policy, raq, opt->src_role_name)) {
error = errno;
goto err;
}
}
if (opt->tgt_role_name)
if (apol_role_allow_query_set_target(policy, raq, opt->tgt_role_name)) {
error = errno;
goto err;
}
if (apol_role_allow_get_by_query(policy, raq, v)) {
error = errno;
goto err;
}
apol_role_allow_query_destroy(&raq);
return 0;
err:
apol_vector_destroy(v);
apol_role_allow_query_destroy(&raq);
ERR(policy, "%s", strerror(error));
errno = error;
return -1;
}
static PyObject* get_ra_results(const apol_policy_t * policy, const apol_vector_t * v, PyObject *output)
{
size_t i, num_rules = 0;
qpol_policy_t *q;
const qpol_role_allow_t *rule = NULL;
const char *tmp;
PyObject *obj, *dict=NULL;
const qpol_role_t *role = NULL;
int error = 0;
errno = EINVAL;
int rt;
if (!policy || !v) {
errno = EINVAL;
goto err;
}
if (!(num_rules = apol_vector_get_size(v)))
return NULL;
q = apol_policy_get_qpol(policy);
for (i = 0; i < num_rules; i++) {
dict = PyDict_New();
if (!dict) goto err;
if (!(rule = apol_vector_get_element(v, i)))
goto err;
if (qpol_role_allow_get_source_role(q, rule, &role)) {
goto err;
}
if (qpol_role_get_name(q, role, &tmp)) {
goto err;
}
obj = PyString_FromString(tmp);
if (py_insert_obj(dict, "source", obj))
goto err;
if (qpol_role_allow_get_target_role(q, rule, &role)) {
goto err;
}
if (qpol_role_get_name(q, role, &tmp)) {
goto err;
}
obj = PyString_FromString(tmp);
if (py_insert_obj(dict, "target", obj))
goto err;
rt = py_append_obj(output, dict);
if (rt) goto err;
py_decref(dict); dict=NULL;
}
goto cleanup;
err:
error = errno;
PyErr_SetString(PyExc_RuntimeError,strerror(error));
py_decref(dict);
cleanup:
errno = error;
return output;
}
static int perform_te_query(const apol_policy_t * policy, const options_t * opt, apol_vector_t ** v)
{
apol_terule_query_t *teq = NULL;
unsigned int rules = 0;
int error = 0;
size_t i;
if (!policy || !opt || !v) {
PyErr_SetString(PyExc_RuntimeError,strerror(EINVAL));
errno = EINVAL;
return -1;
}
if (opt->all || opt->type) {
rules = (QPOL_RULE_TYPE_TRANS | QPOL_RULE_TYPE_CHANGE | QPOL_RULE_TYPE_MEMBER);
} else {
*v = NULL;
return 0; /* no search to do */
}
teq = apol_terule_query_create();
if (!teq) {
PyErr_SetString(PyExc_RuntimeError,strerror(ENOMEM));
errno = ENOMEM;
return -1;
}
apol_terule_query_set_rules(policy, teq, rules);
apol_terule_query_set_regex(policy, teq, opt->useregex);
if (opt->src_name)
apol_terule_query_set_source(policy, teq, opt->src_name, opt->indirect);
if (opt->tgt_name)
apol_terule_query_set_target(policy, teq, opt->tgt_name, opt->indirect);
if (opt->bool_name)
apol_terule_query_set_bool(policy, teq, opt->bool_name);
if (opt->class_name) {
if (opt->class_vector == NULL) {
if (apol_terule_query_append_class(policy, teq, opt->class_name)) {
error = errno;
goto err;
}
} else {
for (i = 0; i < apol_vector_get_size(opt->class_vector); ++i) {
char *class_name;
class_name = apol_vector_get_element(opt->class_vector, i);
if (!class_name)
continue;
if (apol_terule_query_append_class(policy, teq, class_name)) {
error = errno;
goto err;
}
}
}
}
if (!(opt->semantic) && qpol_policy_has_capability(apol_policy_get_qpol(policy), QPOL_CAP_SYN_RULES)) {
if (apol_syn_terule_get_by_query(policy, teq, v)) {
goto err;
}
} else {
if (apol_terule_get_by_query(policy, teq, v)) {
goto err;
}
}
apol_terule_query_destroy(&teq);
return 0;
err:
error = errno;
PyErr_SetString(PyExc_RuntimeError,strerror(error));
apol_vector_destroy(v);
apol_terule_query_destroy(&teq);
errno = error;
return -1;
}
static PyObject* get_bool(const qpol_policy_t *q, const qpol_cond_t * cond, int enabled)
{
qpol_iterator_t *iter = NULL;
qpol_cond_expr_node_t *expr = NULL;
char *tmp = NULL;
const char *bool_name = NULL;
int error = 0;
uint32_t expr_type = 0;
qpol_bool_t *cond_bool = NULL;
PyObject *obj, *tuple = NULL;
PyObject *boollist = NULL;
if (!q || !cond) {
errno = EINVAL;
return NULL;
}
if (qpol_cond_get_expr_node_iter(q, cond, &iter) < 0) {
goto err;
}
boollist = PyList_New(0);
if (! boollist) goto err;
for (; !qpol_iterator_end(iter); qpol_iterator_next(iter)) {
if (qpol_iterator_get_item(iter, (void **)&expr)) {
goto err;
}
if (qpol_cond_expr_node_get_expr_type(q, expr, &expr_type)) {
goto err;
}
if (expr_type != QPOL_COND_EXPR_BOOL) {
obj = PyString_FromString(apol_cond_expr_type_to_str(expr_type));
if (!obj) goto err;
if (py_append_obj(boollist, obj))
goto err;
} else {
tuple = PyTuple_New(2);
if (!tuple) goto err;
if (qpol_cond_expr_node_get_bool(q, expr, &cond_bool)) {
goto err;
}
if (qpol_bool_get_name(q, cond_bool, &bool_name)) {
goto err;
}
obj = PyString_FromString(bool_name);
if (py_tuple_insert_obj(tuple, 0, obj))
goto err;
obj = PyBool_FromLong(enabled);
if (py_tuple_insert_obj(tuple, 1, obj))
goto err;
if (py_append_obj(boollist, tuple))
goto err;
tuple=NULL;
}
}
qpol_iterator_destroy(&iter);
return boollist;
err:
error = errno;
qpol_iterator_destroy(&iter);
py_decref(tuple);
py_decref(boollist);
free(tmp);
errno = error;
return NULL;
}
static PyObject* get_te_results(const apol_policy_t * policy, const apol_vector_t * v, PyObject *output)
{
int error = 0;
int rt = 0;
PyObject *obj, *dict=NULL, *tuple = NULL;
qpol_policy_t *q;
uint32_t rule_type = 0;
const qpol_type_t *type;
size_t i, num_rules = 0;
const qpol_terule_t *rule = NULL;
char *tmp = NULL, *rule_str = NULL, *expr = NULL;
const qpol_cond_t *cond = NULL;
uint32_t enabled = 0;
const char *tmp_name;
const qpol_class_t *obj_class = NULL;
if (!policy || !v) {
errno = EINVAL;
goto err;
}
if (!(num_rules = apol_vector_get_size(v)))
return NULL;
q = apol_policy_get_qpol(policy);
for (i = 0; i < num_rules; i++) {
dict = PyDict_New();
if (!dict) goto err;
if (!(rule = apol_vector_get_element(v, i)))
goto err;
if (qpol_terule_get_cond(q, rule, &cond))
goto err;
if (qpol_terule_get_is_enabled(q, rule, &enabled))
goto err;
if (cond) {
obj = get_bool(q, cond, enabled);
if (!obj) goto err;
rt = PyDict_SetItemString(dict, "boolean", obj);
py_decref(obj);
}
if (qpol_terule_get_rule_type(q, rule, &rule_type))
goto err;
if (!(rule_type &= (QPOL_RULE_TYPE_TRANS | QPOL_RULE_TYPE_CHANGE | QPOL_RULE_TYPE_MEMBER))) {
PyErr_SetString(PyExc_RuntimeError,"Invalid TE rule type");
errno = EINVAL;
goto err;
}
if (!(tmp_name = apol_rule_type_to_str(rule_type))) {
PyErr_SetString(PyExc_RuntimeError, "Could not get TE rule type's string");
errno = EINVAL;
goto err;
}
if (py_insert_string(dict, "type", tmp_name))
goto err;
if (qpol_terule_get_source_type(q, rule, &type))
goto err;
if (qpol_type_get_name(q, type, &tmp_name))
goto err;
if (py_insert_string(dict, "source", tmp_name))
goto err;
if (qpol_terule_get_target_type(q, rule, &type))
goto err;
if (qpol_type_get_name(q, type, &tmp_name))
goto err;
if (py_insert_string(dict, "target", tmp_name))
goto err;
if (qpol_terule_get_object_class(q, rule, &obj_class))
goto err;
if (qpol_class_get_name(q, obj_class, &tmp_name))
goto err;
if (py_insert_string(dict, "class", tmp_name))
goto err;
if (qpol_terule_get_default_type(q, rule, &type))
goto err;
if (qpol_type_get_name(q, type, &tmp_name))
goto err;
if (py_insert_string(dict, "transtype", tmp_name))
goto err;
rt = py_append_obj(output, dict);
dict = NULL;
if(rt) goto err;
free(rule_str); rule_str = NULL;
free(expr); expr = NULL;
}
goto cleanup;
err:
error = errno;
py_decref(dict);
py_decref(tuple);
PyErr_SetString(PyExc_RuntimeError,strerror(error));
cleanup:
free(tmp);
free(rule_str);
free(expr);
errno = error;
return output;
}
static int perform_ft_query(const apol_policy_t * policy, const options_t * opt, apol_vector_t ** v)
{
apol_filename_trans_query_t *ftq = NULL;
size_t i;
int error = 0;
if (!policy || !opt || !v) {
PyErr_SetString(PyExc_RuntimeError,strerror(EINVAL));
errno = EINVAL;
return -1;
}
if (!opt->type && !opt->all) {
*v = NULL;
return 0; /* no search to do */
}
ftq = apol_filename_trans_query_create();
if (!ftq) {
PyErr_SetString(PyExc_RuntimeError,strerror(ENOMEM));
errno = ENOMEM;
return -1;
}
apol_filename_trans_query_set_regex(policy, ftq, opt->useregex);
if (opt->src_name) {
if (apol_filename_trans_query_set_source(policy, ftq, opt->src_name, opt->indirect)) {
goto err;
}
}
if (opt->tgt_name) {
if (apol_filename_trans_query_set_target(policy, ftq, opt->tgt_name, opt->indirect)) {
goto err;
}
}
if (opt->class_name) {
if (opt->class_vector == NULL) {
if (apol_filename_trans_query_append_class(policy, ftq, opt->class_name)) {
goto err;
}
} else {
for (i = 0; i < apol_vector_get_size(opt->class_vector); ++i) {
char *class_name;
class_name = apol_vector_get_element(opt->class_vector, i);
if (!class_name)
continue;
if (apol_filename_trans_query_append_class(policy, ftq, class_name)) {
goto err;
}
}
}
}
if (apol_filename_trans_get_by_query(policy, ftq, v))
goto err;
apol_filename_trans_query_destroy(&ftq);
return 0;
err:
error = errno;
PyErr_SetString(PyExc_RuntimeError,strerror(errno));
apol_vector_destroy(v);
apol_filename_trans_query_destroy(&ftq);
errno = error;
return -1;
}
static PyObject* get_ft_results(const apol_policy_t * policy, const apol_vector_t * v, PyObject *list)
{
PyObject *dict = NULL;
size_t i, num_filename_trans = 0;
const char *tmp_name;
int error = 0;
int rt;
const qpol_filename_trans_t *filename_trans = NULL;
const qpol_class_t *obj_class = NULL;
char *tmp = NULL, *filename_trans_str = NULL, *expr = NULL;
qpol_policy_t *q;
const qpol_type_t *type = NULL;
if (!policy || !v) {
errno = EINVAL;
goto err;
}
if (!(num_filename_trans = apol_vector_get_size(v)))
return NULL;
q = apol_policy_get_qpol(policy);
for (i = 0; i < num_filename_trans; i++) {
if (!(filename_trans = apol_vector_get_element(v, i)))
goto err;
dict = PyDict_New();
if (!dict) goto err;
if (py_insert_string(dict, "type", "type_transition"))
goto err;
/* source type */
if (qpol_filename_trans_get_source_type(q, filename_trans, &type)) {
goto err;
}
if (qpol_type_get_name(q, type, &tmp_name)) {
goto err;
}
if (py_insert_string(dict, "source", tmp_name))
goto err;
if (qpol_filename_trans_get_target_type(q, filename_trans, &type))
goto err;
if (qpol_type_get_name(q, type, &tmp_name))
goto err;
if (py_insert_string(dict, "target", tmp_name))
goto err;
if (qpol_filename_trans_get_object_class(q, filename_trans, &obj_class))
goto err;
if (qpol_class_get_name(q, obj_class, &tmp_name))
goto err;
if (py_insert_string(dict, "class", tmp_name))
goto err;
if (qpol_filename_trans_get_default_type(q, filename_trans, &type))
goto err;
if (qpol_type_get_name(q, type, &tmp_name))
goto err;
if (py_insert_string(dict, "transtype", tmp_name))
goto err;
if (! qpol_filename_trans_get_filename(q, filename_trans, &tmp_name)) {
if (py_insert_string(dict, "filename", tmp_name))
goto err;
}
rt = py_append_obj(list, dict);
dict = NULL;
if (rt) goto err;
free(filename_trans_str); filename_trans_str = NULL;
free(expr); expr = NULL;
}
goto cleanup;
err:
error = errno;
PyErr_SetString(PyExc_RuntimeError,strerror(errno));
py_decref(dict);
cleanup:
free(tmp);
free(filename_trans_str);
free(expr);
errno = error;
return list;
}
static int perform_av_query(const apol_policy_t * policy, const options_t * opt, apol_vector_t ** v)
{
apol_avrule_query_t *avq = NULL;
unsigned int rules = 0;
int error = 0;
char *tmp = NULL, *tok = NULL, *s = NULL;
if (!policy || !opt || !v) {
PyErr_SetString(PyExc_RuntimeError,strerror(EINVAL));
errno = EINVAL;
return -1;
}
if (!opt->all && !opt->allow && !opt->nallow && !opt->auditallow && !opt->dontaudit) {
*v = NULL;
return 0; /* no search to do */
}
avq = apol_avrule_query_create();
if (!avq) {
PyErr_SetString(PyExc_RuntimeError,strerror(ENOMEM));
errno = ENOMEM;
return -1;
}
if (opt->allow || opt->all)
rules |= QPOL_RULE_ALLOW;
if (opt->nallow || opt->all) // Add this regardless of policy capabilities
rules |= QPOL_RULE_NEVERALLOW;
if (opt->auditallow || opt->all)
rules |= QPOL_RULE_AUDITALLOW;
if (opt->dontaudit || opt->all)
rules |= QPOL_RULE_DONTAUDIT;
if (rules != 0) // Setting rules = 0 means you want all the rules
apol_avrule_query_set_rules(policy, avq, rules);
apol_avrule_query_set_regex(policy, avq, opt->useregex);
if (opt->src_name)
apol_avrule_query_set_source(policy, avq, opt->src_name, opt->indirect);
if (opt->tgt_name)
apol_avrule_query_set_target(policy, avq, opt->tgt_name, opt->indirect);
if (opt->bool_name)
apol_avrule_query_set_bool(policy, avq, opt->bool_name);
if (opt->class_name) {
if (opt->class_vector == NULL) {
if (apol_avrule_query_append_class(policy, avq, opt->class_name)) {
goto err;
}
} else {
size_t i;
for (i = 0; i < apol_vector_get_size(opt->class_vector); ++i) {
char *class_name;
class_name = apol_vector_get_element(opt->class_vector, i);
if (!class_name)
continue;
if (apol_avrule_query_append_class(policy, avq, class_name)) {
goto err;
}
}
}
}
if (opt->permlist) {
tmp = strdup(opt->permlist);
for (tok = strtok(tmp, ","); tok; tok = strtok(NULL, ",")) {
if (apol_avrule_query_append_perm(policy, avq, tok)) {
goto err;
}
if ((s = strdup(tok)) == NULL || apol_vector_append(opt->perm_vector, s) < 0) {
goto err;
}
s = NULL;
}
free(tmp);
tmp = NULL;
}
if (!(opt->semantic) && qpol_policy_has_capability(apol_policy_get_qpol(policy), QPOL_CAP_SYN_RULES)) {
if (apol_syn_avrule_get_by_query(policy, avq, v)) {
goto err;
}
} else {
if (apol_avrule_get_by_query(policy, avq, v)) {
goto err;
}
}
apol_avrule_query_destroy(&avq);
return 0;
err:
error = errno;
PyErr_SetString(PyExc_RuntimeError,strerror(error));
apol_vector_destroy(v);
apol_avrule_query_destroy(&avq);
free(tmp);
free(s);
errno = error;
return -1;
}
static PyObject* get_av_results(const apol_policy_t * policy, const apol_vector_t * v, PyObject *output)
{
PyObject *obj, *dict=NULL;
PyObject *permlist = NULL;
PyObject *boollist = NULL;
uint32_t rule_type = 0;
int rt;
int error = 0;
qpol_policy_t *q;
size_t i, num_rules = 0;
const qpol_avrule_t *rule = NULL;
char *tmp = NULL, *rule_str = NULL;
qpol_cond_expr_node_t *expr = NULL;
qpol_iterator_t *iter = NULL;
const qpol_cond_t *cond = NULL;
uint32_t enabled = 0;
const qpol_type_t *type;
const char *tmp_name;
const qpol_class_t *obj_class = NULL;
if (!policy || !v) {
errno = EINVAL;
goto err;
}
if (!(num_rules = apol_vector_get_size(v)))
return NULL;
q = apol_policy_get_qpol(policy);
for (i = 0; i < num_rules; i++) {
if (!(rule = apol_vector_get_element(v, i)))
goto err;
dict = PyDict_New();
if (!dict) goto err;
if (qpol_avrule_get_rule_type(q, rule, &rule_type))
goto err;
if (!(tmp_name = apol_rule_type_to_str(rule_type))) {
PyErr_SetString(PyExc_RuntimeError, "Could not get TE rule type's string");
errno = EINVAL;
goto err;
}
if (py_insert_string(dict, "type", tmp_name))
goto err;
if (qpol_avrule_get_source_type(q, rule, &type)) {
goto err;
}
if (qpol_type_get_name(q, type, &tmp_name)) {
goto err;
}
if (py_insert_string(dict, "source", tmp_name))
goto err;
if (qpol_avrule_get_target_type(q, rule, &type)) {
goto err;
}
if (qpol_type_get_name(q, type, &tmp_name)) {
goto err;
}
if (py_insert_string(dict, "target", tmp_name))
goto err;
if (qpol_avrule_get_object_class(q, rule, &obj_class)) {
goto err;
}
if (qpol_class_get_name(q, obj_class, &tmp_name)) {
goto err;
}
if (py_insert_string(dict, "class", tmp_name))
goto err;
if (qpol_avrule_get_perm_iter(q, rule, &iter)) {
goto err;
}
permlist = PyList_New(0);
if (! permlist) goto err;
for (; !qpol_iterator_end(iter); qpol_iterator_next(iter)) {
const char *perm_name = NULL;
if (qpol_iterator_get_item(iter, (void **)&perm_name))
goto err;
if (py_append_string(permlist, perm_name))
goto err;
}
rt = PyDict_SetItemString(dict, "permlist", permlist);
py_decref(permlist); permlist=NULL;
if (rt) goto err;
if (qpol_avrule_get_cond(q, rule, &cond))
goto err;
if (qpol_avrule_get_is_enabled(q, rule, &enabled))
goto err;
obj = PyBool_FromLong(enabled);
rt = PyDict_SetItemString(dict, "enabled", obj);
py_decref(obj);
if (cond) {
obj = get_bool(q, cond, enabled);
if (!obj) goto err;
rt = PyDict_SetItemString(dict, "boolean", obj);
py_decref(obj);
}
rt = py_append_obj(output, dict);
py_decref(dict); dict=NULL;
if (rt) goto err;
free(rule_str); rule_str = NULL;
free(expr); expr = NULL;
}
goto cleanup;
err:
error = errno;
PyErr_SetString(PyExc_RuntimeError,strerror(errno));
py_decref(dict);
py_decref(permlist);
py_decref(boollist);
cleanup:
free(tmp);
free(rule_str);
free(expr);
errno = error;
return output;
}
PyObject* search(bool allow,
bool neverallow,
bool auditallow,
bool dontaudit,
bool transition,
bool role_allow,
const char *src_name,
const char *tgt_name,
const char *class_name,
const char *permlist
)
{
options_t cmd_opts;
PyObject *output = NULL;
apol_vector_t *v = NULL;
memset(&cmd_opts, 0, sizeof(cmd_opts));
cmd_opts.indirect = true;
cmd_opts.show_cond = true;
cmd_opts.allow = allow;
cmd_opts.nallow = neverallow;
cmd_opts.auditallow = auditallow;
cmd_opts.dontaudit = dontaudit;
cmd_opts.type = transition;
cmd_opts.role_allow = role_allow;
if (src_name)
cmd_opts.src_name = strdup(src_name);
if (tgt_name)
cmd_opts.tgt_name = strdup(tgt_name);
if (class_name)
cmd_opts.class_name = strdup(class_name);
if (permlist){
cmd_opts.perm_vector = apol_vector_create(free);
cmd_opts.permlist = strdup(permlist);
}
if (!cmd_opts.semantic && qpol_policy_has_capability(apol_policy_get_qpol(policy), QPOL_CAP_SYN_RULES)) {
if (qpol_policy_build_syn_rule_table(apol_policy_get_qpol(policy))) {
PyErr_SetString(PyExc_RuntimeError,"Query failed");
goto cleanup;
}
}
/* if syntactic rules are not available always do semantic search */
if (!qpol_policy_has_capability(apol_policy_get_qpol(policy), QPOL_CAP_SYN_RULES)) {
cmd_opts.semantic = 1;
}
/* supress line numbers if doing semantic search or not available */
if (cmd_opts.semantic || !qpol_policy_has_capability(apol_policy_get_qpol(policy), QPOL_CAP_LINE_NUMBERS)) {
cmd_opts.lineno = 0;
}
if (perform_av_query(policy, &cmd_opts, &v)) {
goto cleanup;
}
output = PyList_New(0);
if (!output)
goto cleanup;
if (v) {
get_av_results(policy, v, output);
}
apol_vector_destroy(&v);
if (perform_te_query(policy, &cmd_opts, &v)) {
goto cleanup;
}
if (v) {
get_te_results(policy, v, output);
}
if (cmd_opts.all || cmd_opts.type) {
apol_vector_destroy(&v);
if (perform_ft_query(policy, &cmd_opts, &v)) {
goto cleanup;
}
if (v) {
get_ft_results(policy, v, output);
}
}
if (cmd_opts.all || cmd_opts.role_allow) {
apol_vector_destroy(&v);
if (perform_ra_query(policy, &cmd_opts, &v)) {
goto cleanup;
}
if (v) {
get_ra_results(policy, v, output);
}
}
apol_vector_destroy(&v);
cleanup:
free(cmd_opts.src_name);
free(cmd_opts.tgt_name);
free(cmd_opts.class_name);
free(cmd_opts.permlist);
free(cmd_opts.bool_name);
free(cmd_opts.src_role_name);
free(cmd_opts.tgt_role_name);
apol_vector_destroy(&cmd_opts.perm_vector);
apol_vector_destroy(&cmd_opts.class_vector);
if (output && PyList_GET_SIZE(output) == 0) {
py_decref(output);
return Py_None;
}
return output;
}
static int Dict_ContainsInt(PyObject *dict, const char *key){
PyObject *item = PyDict_GetItemString(dict, key);
if (item)
return PyInt_AsLong(item);
return false;
}
static const char *Dict_ContainsString(PyObject *dict, const char *key){
PyObject *item = PyDict_GetItemString(dict, key);
if (item)
return PyString_AsString(item);
return NULL;
}
PyObject *wrap_search(PyObject *UNUSED(self), PyObject *args){
PyObject *dict;
if (!PyArg_ParseTuple(args, "O", &dict))
return NULL;
int allow = Dict_ContainsInt(dict, "allow");
int neverallow = Dict_ContainsInt(dict, "neverallow");
int auditallow = Dict_ContainsInt(dict, "auditallow");
int dontaudit = Dict_ContainsInt(dict, "dontaudit");
int transition = Dict_ContainsInt(dict, "transition");
int role_allow = Dict_ContainsInt(dict, "role_allow");
if (!policy) {
PyErr_SetString(PyExc_RuntimeError,"Policy not loaded");
return NULL;
}
const char *src_name = Dict_ContainsString(dict, "source");
const char *tgt_name = Dict_ContainsString(dict, "target");
const char *class_name = Dict_ContainsString(dict, "class");
const char *permlist = Dict_ContainsString(dict, "permlist");
return search(allow, neverallow, auditallow, dontaudit, transition, role_allow, src_name, tgt_name, class_name, permlist);
}
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