/*
* Copyright 2011 Tresys Technology, LLC. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY TRESYS TECHNOLOGY, LLC ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL TRESYS TECHNOLOGY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of Tresys Technology, LLC.
*/
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <netinet/in.h>
#ifndef IPPROTO_DCCP
#define IPPROTO_DCCP 33
#endif
#ifndef IPPROTO_SCTP
#define IPPROTO_SCTP 132
#endif
#include <sepol/policydb/policydb.h>
#include <sepol/policydb/polcaps.h>
#include <sepol/policydb/conditional.h>
#include <sepol/policydb/constraint.h>
#include <sepol/policydb/flask.h>
#include <sepol/policydb/expand.h>
#include <sepol/policydb/hierarchy.h>
#include "cil_internal.h"
#include "cil_flavor.h"
#include "cil_log.h"
#include "cil_mem.h"
#include "cil_tree.h"
#include "cil_binary.h"
#include "cil_symtab.h"
#include "cil_find.h"
#include "cil_build_ast.h"
/* There are 44000 filename_trans in current fedora policy. 1.33 times this is the recommended
* size of a hashtable. The next power of 2 of this is 2 ** 16.
*/
#define FILENAME_TRANS_TABLE_SIZE (1 << 16)
#define RANGE_TRANS_TABLE_SIZE (1 << 13)
#define ROLE_TRANS_TABLE_SIZE (1 << 10)
#define AVRULEX_TABLE_SIZE (1 << 10)
#define PERMS_PER_CLASS 32
struct cil_args_binary {
const struct cil_db *db;
policydb_t *pdb;
struct cil_list *neverallows;
int pass;
hashtab_t filename_trans_table;
hashtab_t range_trans_table;
hashtab_t role_trans_table;
hashtab_t avrulex_ioctl_table;
void **type_value_to_cil;
};
struct cil_args_booleanif {
const struct cil_db *db;
policydb_t *pdb;
cond_node_t *cond_node;
enum cil_flavor cond_flavor;
hashtab_t filename_trans_table;
};
static int __cil_get_sepol_user_datum(policydb_t *pdb, struct cil_symtab_datum *datum, user_datum_t **sepol_user)
{
*sepol_user = hashtab_search(pdb->p_users.table, datum->fqn);
if (*sepol_user == NULL) {
cil_log(CIL_INFO, "Failed to find user %s in sepol hashtab\n", datum->fqn);
return SEPOL_ERR;
}
return SEPOL_OK;
}
static int __cil_get_sepol_role_datum(policydb_t *pdb, struct cil_symtab_datum *datum, role_datum_t **sepol_role)
{
*sepol_role = hashtab_search(pdb->p_roles.table, datum->fqn);
if (*sepol_role == NULL) {
cil_log(CIL_INFO, "Failed to find role %s in sepol hashtab\n", datum->fqn);
return SEPOL_ERR;
}
return SEPOL_OK;
}
static int __cil_get_sepol_type_datum(policydb_t *pdb, struct cil_symtab_datum *datum, type_datum_t **sepol_type)
{
*sepol_type = hashtab_search(pdb->p_types.table, datum->fqn);
if (*sepol_type == NULL) {
cil_log(CIL_INFO, "Failed to find type %s in sepol hashtab\n", datum->fqn);
return SEPOL_ERR;
}
return SEPOL_OK;
}
static int __cil_get_sepol_class_datum(policydb_t *pdb, struct cil_symtab_datum *datum, class_datum_t **sepol_class)
{
*sepol_class = hashtab_search(pdb->p_classes.table, datum->fqn);
if (*sepol_class == NULL) {
cil_log(CIL_INFO, "Failed to find class %s in sepol hashtab\n", datum->fqn);
return SEPOL_ERR;
}
return SEPOL_OK;
}
static int __cil_get_sepol_cat_datum(policydb_t *pdb, struct cil_symtab_datum *datum, cat_datum_t **sepol_cat)
{
*sepol_cat = hashtab_search(pdb->p_cats.table, datum->fqn);
if (*sepol_cat == NULL) {
cil_log(CIL_INFO, "Failed to find category %s in sepol hashtab\n", datum->fqn);
return SEPOL_ERR;
}
return SEPOL_OK;
}
static int __cil_get_sepol_level_datum(policydb_t *pdb, struct cil_symtab_datum *datum, level_datum_t **sepol_level)
{
*sepol_level = hashtab_search(pdb->p_levels.table, datum->fqn);
if (*sepol_level == NULL) {
cil_log(CIL_INFO, "Failed to find level %s in sepol hashtab\n", datum->fqn);
return SEPOL_ERR;
}
return SEPOL_OK;
}
static int __cil_expand_user(struct cil_symtab_datum *datum, ebitmap_t *new)
{
struct cil_tree_node *node = datum->nodes->head->data;
struct cil_user *user = NULL;
struct cil_userattribute *attr = NULL;
if (node->flavor == CIL_USERATTRIBUTE) {
attr = (struct cil_userattribute *)datum;
if (ebitmap_cpy(new, attr->users)) {
cil_log(CIL_ERR, "Failed to copy user bits\n");
goto exit;
}
} else {
user = (struct cil_user *)datum;
ebitmap_init(new);
if (ebitmap_set_bit(new, user->value, 1)) {
cil_log(CIL_ERR, "Failed to set user bit\n");
ebitmap_destroy(new);
goto exit;
}
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
static int __cil_expand_role(struct cil_symtab_datum *datum, ebitmap_t *new)
{
struct cil_tree_node *node = datum->nodes->head->data;
if (node->flavor == CIL_ROLEATTRIBUTE) {
struct cil_roleattribute *attr = (struct cil_roleattribute *)datum;
if (ebitmap_cpy(new, attr->roles)) {
cil_log(CIL_ERR, "Failed to copy role bits\n");
goto exit;
}
} else {
struct cil_role *role = (struct cil_role *)datum;
ebitmap_init(new);
if (ebitmap_set_bit(new, role->value, 1)) {
cil_log(CIL_ERR, "Failed to set role bit\n");
ebitmap_destroy(new);
goto exit;
}
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
static int __cil_expand_type(struct cil_symtab_datum *datum, ebitmap_t *new)
{
struct cil_tree_node *node = datum->nodes->head->data;
if (node->flavor == CIL_TYPEATTRIBUTE) {
struct cil_typeattribute *attr = (struct cil_typeattribute *)datum;
if (ebitmap_cpy(new, attr->types)) {
cil_log(CIL_ERR, "Failed to copy type bits\n");
goto exit;
}
} else {
struct cil_type *type = (struct cil_type *)datum;
ebitmap_init(new);
if (ebitmap_set_bit(new, type->value, 1)) {
cil_log(CIL_ERR, "Failed to set type bit\n");
ebitmap_destroy(new);
goto exit;
}
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
static ocontext_t *cil_add_ocontext(ocontext_t **head, ocontext_t **tail)
{
ocontext_t *new = cil_malloc(sizeof(ocontext_t));
memset(new, 0, sizeof(ocontext_t));
if (*tail) {
(*tail)->next = new;
} else {
*head = new;
}
*tail = new;
return new;
}
int cil_common_to_policydb(policydb_t *pdb, struct cil_class *cil_common, common_datum_t **common_out)
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
struct cil_tree_node *node = cil_common->datum.nodes->head->data;
struct cil_tree_node *cil_perm = node->cl_head;
common_datum_t *sepol_common = cil_malloc(sizeof(*sepol_common));
memset(sepol_common, 0, sizeof(common_datum_t));
key = cil_strdup(cil_common->datum.fqn);
rc = symtab_insert(pdb, SYM_COMMONS, key, sepol_common, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
free(sepol_common);
goto exit;
}
sepol_common->s.value = value;
rc = symtab_init(&sepol_common->permissions, PERM_SYMTAB_SIZE);
if (rc != SEPOL_OK) {
goto exit;
}
while (cil_perm != NULL) {
struct cil_perm *curr = cil_perm->data;
perm_datum_t *sepol_perm = cil_malloc(sizeof(*sepol_perm));
memset(sepol_perm, 0, sizeof(perm_datum_t));
key = cil_strdup(curr->datum.fqn);
rc = hashtab_insert(sepol_common->permissions.table, key, sepol_perm);
if (rc != SEPOL_OK) {
free(sepol_perm);
goto exit;
}
sepol_perm->s.value = sepol_common->permissions.nprim + 1;
sepol_common->permissions.nprim++;
cil_perm = cil_perm->next;
}
*common_out = sepol_common;
return SEPOL_OK;
exit:
free(key);
return rc;
}
int cil_classorder_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[])
{
int rc = SEPOL_ERR;
struct cil_list_item *curr_class;
cil_list_for_each(curr_class, db->classorder) {
struct cil_class *cil_class = curr_class->data;
uint32_t value = 0;
char *key = NULL;
int class_index;
struct cil_tree_node *curr;
common_datum_t *sepol_common = NULL;
class_datum_t *sepol_class = cil_malloc(sizeof(*sepol_class));
memset(sepol_class, 0, sizeof(class_datum_t));
key = cil_strdup(cil_class->datum.fqn);
rc = symtab_insert(pdb, SYM_CLASSES, key, sepol_class, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
free(sepol_class);
free(key);
goto exit;
}
sepol_class->s.value = value;
class_index = value;
class_value_to_cil[class_index] = cil_class;
rc = symtab_init(&sepol_class->permissions, PERM_SYMTAB_SIZE);
if (rc != SEPOL_OK) {
goto exit;
}
if (cil_class->common != NULL) {
int i;
struct cil_class *cil_common = cil_class->common;
key = cil_class->common->datum.fqn;
sepol_common = hashtab_search(pdb->p_commons.table, key);
if (sepol_common == NULL) {
rc = cil_common_to_policydb(pdb, cil_common, &sepol_common);
if (rc != SEPOL_OK) {
goto exit;
}
}
sepol_class->comdatum = sepol_common;
sepol_class->comkey = cil_strdup(key);
sepol_class->permissions.nprim += sepol_common->permissions.nprim;
for (curr = NODE(cil_class->common)->cl_head, i = 1; curr; curr = curr->next, i++) {
struct cil_perm *cil_perm = curr->data;
perm_value_to_cil[class_index][i] = cil_perm;
}
}
for (curr = NODE(cil_class)->cl_head; curr; curr = curr->next) {
struct cil_perm *cil_perm = curr->data;
perm_datum_t *sepol_perm = cil_malloc(sizeof(*sepol_perm));
memset(sepol_perm, 0, sizeof(perm_datum_t));
key = cil_strdup(cil_perm->datum.fqn);
rc = hashtab_insert(sepol_class->permissions.table, key, sepol_perm);
if (rc != SEPOL_OK) {
free(sepol_perm);
free(key);
goto exit;
}
sepol_perm->s.value = sepol_class->permissions.nprim + 1;
sepol_class->permissions.nprim++;
perm_value_to_cil[class_index][sepol_perm->s.value] = cil_perm;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_role_to_policydb(policydb_t *pdb, struct cil_role *cil_role)
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
role_datum_t *sepol_role = cil_malloc(sizeof(*sepol_role));
role_datum_init(sepol_role);
if (cil_role->datum.fqn == CIL_KEY_OBJECT_R) {
/* special case
* object_r defaults to 1 in libsepol symtab */
rc = SEPOL_OK;
goto exit;
}
key = cil_strdup(cil_role->datum.fqn);
rc = symtab_insert(pdb, SYM_ROLES, (hashtab_key_t)key, sepol_role, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
goto exit;
}
if (ebitmap_set_bit(&sepol_role->dominates, value - 1, 1)) {
cil_log(CIL_INFO, "Failed to set dominates bit for role\n");
rc = SEPOL_ERR;
goto exit;
}
sepol_role->s.value = value;
return SEPOL_OK;
exit:
free(key);
role_datum_destroy(sepol_role);
free(sepol_role);
return rc;
}
int cil_role_bounds_to_policydb(policydb_t *pdb, struct cil_role *cil_role)
{
int rc = SEPOL_ERR;
role_datum_t *sepol_role = NULL;
role_datum_t *sepol_parent = NULL;
if (cil_role->bounds) {
rc = __cil_get_sepol_role_datum(pdb, DATUM(cil_role), &sepol_role);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_role_datum(pdb, DATUM(cil_role->bounds), &sepol_parent);
if (rc != SEPOL_OK) goto exit;
sepol_role->bounds = sepol_parent->s.value;
}
return SEPOL_OK;
exit:
cil_log(CIL_ERR, "Failed to insert role bounds for role %s\n", cil_role->datum.fqn);
return SEPOL_ERR;
}
int cil_roletype_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_role *role)
{
int rc = SEPOL_ERR;
if (role->types) {
role_datum_t *sepol_role = NULL;
type_datum_t *sepol_type = NULL;
ebitmap_node_t *tnode;
unsigned int i;
rc = __cil_get_sepol_role_datum(pdb, DATUM(role), &sepol_role);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(role->types, tnode, i) {
if (!ebitmap_get_bit(role->types, i)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[i]), &sepol_type);
if (rc != SEPOL_OK) goto exit;
if (ebitmap_set_bit(&sepol_role->types.types, sepol_type->s.value - 1, 1)) {
cil_log(CIL_INFO, "Failed to set type bit for role\n");
rc = SEPOL_ERR;
goto exit;
}
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_type_to_policydb(policydb_t *pdb, struct cil_type *cil_type, void *type_value_to_cil[])
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
type_datum_t *sepol_type = cil_malloc(sizeof(*sepol_type));
type_datum_init(sepol_type);
sepol_type->flavor = TYPE_TYPE;
key = cil_strdup(cil_type->datum.fqn);
rc = symtab_insert(pdb, SYM_TYPES, key, sepol_type, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_type->s.value = value;
sepol_type->primary = 1;
type_value_to_cil[value] = cil_type;
return SEPOL_OK;
exit:
free(key);
type_datum_destroy(sepol_type);
free(sepol_type);
return rc;
}
int cil_type_bounds_to_policydb(policydb_t *pdb, struct cil_type *cil_type)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_type = NULL;
type_datum_t *sepol_parent = NULL;
if (cil_type->bounds) {
rc = __cil_get_sepol_type_datum(pdb, DATUM(cil_type), &sepol_type);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_type_datum(pdb, DATUM(cil_type->bounds), &sepol_parent);
if (rc != SEPOL_OK) goto exit;
sepol_type->bounds = sepol_parent->s.value;
}
return SEPOL_OK;
exit:
cil_log(CIL_ERR, "Failed to insert type bounds for type %s\n", cil_type->datum.fqn);
return SEPOL_ERR;
}
int cil_typealias_to_policydb(policydb_t *pdb, struct cil_alias *cil_alias)
{
int rc = SEPOL_ERR;
char *key = NULL;
type_datum_t *sepol_type = NULL;
type_datum_t *sepol_alias = cil_malloc(sizeof(*sepol_alias));
type_datum_init(sepol_alias);
rc = __cil_get_sepol_type_datum(pdb, DATUM(cil_alias->actual), &sepol_type);
if (rc != SEPOL_OK) goto exit;
sepol_alias->flavor = TYPE_TYPE;
key = cil_strdup(cil_alias->datum.fqn);
rc = symtab_insert(pdb, SYM_TYPES, key, sepol_alias, SCOPE_DECL, 0, NULL);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_alias->s.value = sepol_type->s.value;
sepol_alias->primary = 0;
return SEPOL_OK;
exit:
free(key);
type_datum_destroy(sepol_alias);
free(sepol_alias);
return rc;
}
int cil_typepermissive_to_policydb(policydb_t *pdb, struct cil_typepermissive *cil_typeperm)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_type = NULL;
rc = __cil_get_sepol_type_datum(pdb, DATUM(cil_typeperm->type), &sepol_type);
if (rc != SEPOL_OK) goto exit;
if (ebitmap_set_bit(&pdb->permissive_map, sepol_type->s.value, 1)) {
goto exit;
}
return SEPOL_OK;
exit:
type_datum_destroy(sepol_type);
free(sepol_type);
return rc;
}
int cil_typeattribute_to_policydb(policydb_t *pdb, struct cil_typeattribute *cil_attr, void *type_value_to_cil[])
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
type_datum_t *sepol_attr = NULL;
if (!cil_attr->keep) {
return SEPOL_OK;
}
sepol_attr = cil_malloc(sizeof(*sepol_attr));
type_datum_init(sepol_attr);
sepol_attr->flavor = TYPE_ATTRIB;
key = cil_strdup(cil_attr->datum.fqn);
rc = symtab_insert(pdb, SYM_TYPES, key, sepol_attr, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_attr->s.value = value;
sepol_attr->primary = 1;
type_value_to_cil[value] = cil_attr;
return SEPOL_OK;
exit:
type_datum_destroy(sepol_attr);
free(sepol_attr);
return rc;
}
int __cil_typeattr_bitmap_init(policydb_t *pdb)
{
int rc = SEPOL_ERR;
pdb->type_attr_map = cil_malloc(pdb->p_types.nprim * sizeof(ebitmap_t));
pdb->attr_type_map = cil_malloc(pdb->p_types.nprim * sizeof(ebitmap_t));
uint32_t i = 0;
for (i = 0; i < pdb->p_types.nprim; i++) {
ebitmap_init(&pdb->type_attr_map[i]);
ebitmap_init(&pdb->attr_type_map[i]);
if (ebitmap_set_bit(&pdb->type_attr_map[i], i, 1)) {
rc = SEPOL_ERR;
goto exit;
}
if (pdb->type_val_to_struct[i] && pdb->type_val_to_struct[i]->flavor != TYPE_ATTRIB) {
if (ebitmap_set_bit(&pdb->attr_type_map[i], i, 1)) {
rc = SEPOL_ERR;
goto exit;
}
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_typeattribute_to_bitmap(policydb_t *pdb, const struct cil_db *db, struct cil_typeattribute *cil_attr)
{
int rc = SEPOL_ERR;
uint32_t value = 0;
type_datum_t *sepol_type = NULL;
ebitmap_node_t *tnode;
unsigned int i;
if (!cil_attr->keep) {
return SEPOL_OK;
}
if (pdb->type_attr_map == NULL) {
rc = __cil_typeattr_bitmap_init(pdb);
if (rc != SEPOL_OK) {
goto exit;
}
}
rc = __cil_get_sepol_type_datum(pdb, DATUM(cil_attr), &sepol_type);
if (rc != SEPOL_OK) goto exit;
value = sepol_type->s.value;
ebitmap_for_each_bit(cil_attr->types, tnode, i) {
if (!ebitmap_get_bit(cil_attr->types, i)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[i]), &sepol_type);
if (rc != SEPOL_OK) goto exit;
ebitmap_set_bit(&pdb->type_attr_map[sepol_type->s.value - 1], value - 1, 1);
ebitmap_set_bit(&pdb->attr_type_map[value - 1], sepol_type->s.value - 1, 1);
}
rc = SEPOL_OK;
exit:
return rc;
}
int cil_policycap_to_policydb(policydb_t *pdb, struct cil_policycap *cil_polcap)
{
int rc = SEPOL_ERR;
int capnum;
capnum = sepol_polcap_getnum(cil_polcap->datum.fqn);
if (capnum == -1) {
goto exit;
}
if (ebitmap_set_bit(&pdb->policycaps, capnum, 1)) {
goto exit;
}
return SEPOL_OK;
exit:
return rc;
}
int cil_user_to_policydb(policydb_t *pdb, struct cil_user *cil_user)
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
user_datum_t *sepol_user = cil_malloc(sizeof(*sepol_user));
user_datum_init(sepol_user);
key = cil_strdup(cil_user->datum.fqn);
rc = symtab_insert(pdb, SYM_USERS, key, sepol_user, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_user->s.value = value;
return SEPOL_OK;
exit:
free(key);
user_datum_destroy(sepol_user);
free(sepol_user);
return rc;
}
int cil_user_bounds_to_policydb(policydb_t *pdb, struct cil_user *cil_user)
{
int rc = SEPOL_ERR;
user_datum_t *sepol_user = NULL;
user_datum_t *sepol_parent = NULL;
if (cil_user->bounds) {
rc = __cil_get_sepol_user_datum(pdb, DATUM(cil_user), &sepol_user);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_user_datum(pdb, DATUM(cil_user->bounds), &sepol_parent);
if (rc != SEPOL_OK) goto exit;
sepol_user->bounds = sepol_parent->s.value;
}
return SEPOL_OK;
exit:
cil_log(CIL_ERR, "Failed to insert user bounds for user %s\n", cil_user->datum.fqn);
return SEPOL_ERR;
}
int cil_userrole_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_user *user)
{
int rc = SEPOL_ERR;
user_datum_t *sepol_user = NULL;
role_datum_t *sepol_role = NULL;
ebitmap_node_t *rnode = NULL;
unsigned int i;
if (user->roles) {
rc = __cil_get_sepol_user_datum(pdb, DATUM(user), &sepol_user);
if (rc != SEPOL_OK) {
goto exit;
}
ebitmap_for_each_bit(user->roles, rnode, i) {
if (!ebitmap_get_bit(user->roles, i)) {
continue;
}
rc = __cil_get_sepol_role_datum(pdb, DATUM(db->val_to_role[i]), &sepol_role);
if (rc != SEPOL_OK) {
goto exit;
}
if (sepol_role->s.value == 1) {
// role is object_r, ignore it since it is implicitly associated
// with all users
continue;
}
if (ebitmap_set_bit(&sepol_user->roles.roles, sepol_role->s.value - 1, 1)) {
cil_log(CIL_INFO, "Failed to set role bit for user\n");
rc = SEPOL_ERR;
goto exit;
}
}
}
rc = SEPOL_OK;
exit:
return rc;
}
int cil_bool_to_policydb(policydb_t *pdb, struct cil_bool *cil_bool)
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
cond_bool_datum_t *sepol_bool = cil_malloc(sizeof(*sepol_bool));
memset(sepol_bool, 0, sizeof(cond_bool_datum_t));
key = cil_strdup(cil_bool->datum.fqn);
rc = symtab_insert(pdb, SYM_BOOLS, key, sepol_bool, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_bool->s.value = value;
sepol_bool->state = cil_bool->value;
return SEPOL_OK;
exit:
free(key);
free(sepol_bool);
return rc;
}
int cil_catorder_to_policydb(policydb_t *pdb, const struct cil_db *db)
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
struct cil_list_item *curr_cat;
struct cil_cat *cil_cat = NULL;
cat_datum_t *sepol_cat = NULL;
cil_list_for_each(curr_cat, db->catorder) {
cil_cat = curr_cat->data;
sepol_cat = cil_malloc(sizeof(*sepol_cat));
cat_datum_init(sepol_cat);
key = cil_strdup(cil_cat->datum.fqn);
rc = symtab_insert(pdb, SYM_CATS, key, sepol_cat, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_cat->s.value = value;
}
return SEPOL_OK;
exit:
free(key);
cat_datum_destroy(sepol_cat);
free(sepol_cat);
return rc;
}
int cil_catalias_to_policydb(policydb_t *pdb, struct cil_alias *cil_alias)
{
int rc = SEPOL_ERR;
char *key = NULL;
cat_datum_t *sepol_cat;
cat_datum_t *sepol_alias = cil_malloc(sizeof(*sepol_cat));
cat_datum_init(sepol_alias);
rc = __cil_get_sepol_cat_datum(pdb, DATUM(cil_alias->actual), &sepol_cat);
if (rc != SEPOL_OK) goto exit;
key = cil_strdup(cil_alias->datum.fqn);
rc = symtab_insert(pdb, SYM_CATS, key, sepol_alias, SCOPE_DECL, 0, NULL);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_alias->s.value = sepol_cat->s.value;
sepol_alias->isalias = 1;
return SEPOL_OK;
exit:
free(key);
cat_datum_destroy(sepol_alias);
free(sepol_alias);
return rc;
}
int cil_sensitivityorder_to_policydb(policydb_t *pdb, const struct cil_db *db)
{
int rc = SEPOL_ERR;
uint32_t value = 0;
char *key = NULL;
struct cil_list_item *curr;
struct cil_sens *cil_sens = NULL;
level_datum_t *sepol_level = NULL;
mls_level_t *mls_level = NULL;
cil_list_for_each(curr, db->sensitivityorder) {
cil_sens = curr->data;
sepol_level = cil_malloc(sizeof(*sepol_level));
mls_level = cil_malloc(sizeof(*mls_level));
level_datum_init(sepol_level);
mls_level_init(mls_level);
key = cil_strdup(cil_sens->datum.fqn);
rc = symtab_insert(pdb, SYM_LEVELS, key, sepol_level, SCOPE_DECL, 0, &value);
if (rc != SEPOL_OK) {
goto exit;
}
mls_level->sens = value;
sepol_level->level = mls_level;
}
return SEPOL_OK;
exit:
level_datum_destroy(sepol_level);
mls_level_destroy(mls_level);
free(sepol_level);
free(mls_level);
free(key);
return rc;
}
int cil_sensalias_to_policydb(policydb_t *pdb, struct cil_alias *cil_alias)
{
int rc = SEPOL_ERR;
char *key = NULL;
mls_level_t *mls_level = NULL;
level_datum_t *sepol_level = NULL;
level_datum_t *sepol_alias = cil_malloc(sizeof(*sepol_alias));
level_datum_init(sepol_alias);
rc = __cil_get_sepol_level_datum(pdb, DATUM(cil_alias->actual), &sepol_level);
if (rc != SEPOL_OK) goto exit;
key = cil_strdup(cil_alias->datum.fqn);
rc = symtab_insert(pdb, SYM_LEVELS, key, sepol_alias, SCOPE_DECL, 0, NULL);
if (rc != SEPOL_OK) {
goto exit;
}
mls_level = cil_malloc(sizeof(*mls_level));
mls_level_init(mls_level);
rc = mls_level_cpy(mls_level, sepol_level->level);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_alias->level = mls_level;
sepol_alias->defined = 1;
sepol_alias->isalias = 1;
return SEPOL_OK;
exit:
level_datum_destroy(sepol_alias);
free(sepol_alias);
free(key);
return rc;
}
int __cil_cond_insert_rule(avtab_t *avtab, avtab_key_t *avtab_key, avtab_datum_t *avtab_datum, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_OK;
avtab_ptr_t avtab_ptr = NULL;
cond_av_list_t *cond_list = NULL;
avtab_ptr = avtab_insert_nonunique(avtab, avtab_key, avtab_datum);
if (!avtab_ptr) {
rc = SEPOL_ERR;
goto exit;
}
// parse_context needs to be non-NULL for conditional rules to be
// written to the binary. it is normally used for finding duplicates,
// but cil checks that earlier, so we don't use it. it just needs to be
// set
avtab_ptr->parse_context = (void*)1;
cond_list = cil_malloc(sizeof(cond_av_list_t));
memset(cond_list, 0, sizeof(cond_av_list_t));
cond_list->node = avtab_ptr;
if (cond_flavor == CIL_CONDTRUE) {
cond_list->next = cond_node->true_list;
cond_node->true_list = cond_list;
} else {
cond_list->next = cond_node->false_list;
cond_node->false_list = cond_list;
}
exit:
return rc;
}
avtab_datum_t *cil_cond_av_list_search(avtab_key_t *key, cond_av_list_t *cond_list)
{
cond_av_list_t *cur_av;
for (cur_av = cond_list; cur_av != NULL; cur_av = cur_av->next) {
if (cur_av->node->key.source_type == key->source_type &&
cur_av->node->key.target_type == key->target_type &&
cur_av->node->key.target_class == key->target_class &&
(cur_av->node->key.specified & key->specified))
return &cur_av->node->datum;
}
return NULL;
}
int __cil_insert_type_rule(policydb_t *pdb, uint32_t kind, uint32_t src, uint32_t tgt, uint32_t obj, uint32_t res, struct cil_type_rule *cil_rule, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_OK;
avtab_key_t avtab_key;
avtab_datum_t avtab_datum;
avtab_ptr_t existing;
avtab_key.source_type = src;
avtab_key.target_type = tgt;
avtab_key.target_class = obj;
switch (kind) {
case CIL_TYPE_TRANSITION:
avtab_key.specified = AVTAB_TRANSITION;
break;
case CIL_TYPE_CHANGE:
avtab_key.specified = AVTAB_CHANGE;
break;
case CIL_TYPE_MEMBER:
avtab_key.specified = AVTAB_MEMBER;
break;
default:
rc = SEPOL_ERR;
goto exit;
}
avtab_datum.data = res;
existing = avtab_search_node(&pdb->te_avtab, &avtab_key);
if (existing) {
/* Don't add duplicate type rule and warn if they conflict.
* A warning should have been previously given if there is a
* non-duplicate rule using the same key.
*/
if (existing->datum.data != res) {
cil_log(CIL_ERR, "Conflicting type rules (scontext=%s tcontext=%s tclass=%s result=%s), existing=%s\n",
pdb->p_type_val_to_name[src - 1],
pdb->p_type_val_to_name[tgt - 1],
pdb->p_class_val_to_name[obj - 1],
pdb->p_type_val_to_name[res - 1],
pdb->p_type_val_to_name[existing->datum.data - 1]);
cil_log(CIL_ERR, "Expanded from type rule (scontext=%s tcontext=%s tclass=%s result=%s)\n",
cil_rule->src_str, cil_rule->tgt_str, cil_rule->obj_str, cil_rule->result_str);
rc = SEPOL_ERR;
}
goto exit;
}
if (!cond_node) {
rc = avtab_insert(&pdb->te_avtab, &avtab_key, &avtab_datum);
} else {
existing = avtab_search_node(&pdb->te_cond_avtab, &avtab_key);
if (existing) {
cond_av_list_t *this_list;
cond_av_list_t *other_list;
avtab_datum_t *search_datum;
if (cond_flavor == CIL_CONDTRUE) {
this_list = cond_node->true_list;
other_list = cond_node->false_list;
} else {
this_list = cond_node->false_list;
other_list = cond_node->true_list;
}
search_datum = cil_cond_av_list_search(&avtab_key, other_list);
if (search_datum == NULL) {
if (existing->datum.data != res) {
cil_log(CIL_ERR, "Conflicting type rules (scontext=%s tcontext=%s tclass=%s result=%s), existing=%s\n",
pdb->p_type_val_to_name[src - 1],
pdb->p_type_val_to_name[tgt - 1],
pdb->p_class_val_to_name[obj - 1],
pdb->p_type_val_to_name[res - 1],
pdb->p_type_val_to_name[existing->datum.data - 1]);
cil_log(CIL_ERR, "Expanded from type rule (scontext=%s tcontext=%s tclass=%s result=%s)\n",
cil_rule->src_str, cil_rule->tgt_str, cil_rule->obj_str, cil_rule->result_str);
rc = SEPOL_ERR;
goto exit;
}
search_datum = cil_cond_av_list_search(&avtab_key, this_list);
if (search_datum) {
goto exit;
}
}
}
rc = __cil_cond_insert_rule(&pdb->te_cond_avtab, &avtab_key, &avtab_datum, cond_node, cond_flavor);
}
exit:
return rc;
}
int __cil_type_rule_to_avtab(policydb_t *pdb, const struct cil_db *db, struct cil_type_rule *cil_rule, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_ERR;
uint16_t kind = cil_rule->rule_kind;
type_datum_t *sepol_src = NULL;
type_datum_t *sepol_tgt = NULL;
class_datum_t *sepol_obj = NULL;
struct cil_list *class_list;
type_datum_t *sepol_result = NULL;
ebitmap_t src_bitmap, tgt_bitmap;
ebitmap_node_t *node1, *node2;
unsigned int i, j;
struct cil_list_item *c;
rc = __cil_expand_type(cil_rule->src, &src_bitmap);
if (rc != SEPOL_OK) goto exit;
rc = __cil_expand_type(cil_rule->tgt, &tgt_bitmap);
if (rc != SEPOL_OK) goto exit;
class_list = cil_expand_class(cil_rule->obj);
rc = __cil_get_sepol_type_datum(pdb, DATUM(cil_rule->result), &sepol_result);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&src_bitmap, node1, i) {
if (!ebitmap_get_bit(&src_bitmap, i)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[i]), &sepol_src);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&tgt_bitmap, node2, j) {
if (!ebitmap_get_bit(&tgt_bitmap, j)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[j]), &sepol_tgt);
if (rc != SEPOL_OK) goto exit;
cil_list_for_each(c, class_list) {
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_obj);
if (rc != SEPOL_OK) goto exit;
rc = __cil_insert_type_rule(pdb, kind, sepol_src->s.value, sepol_tgt->s.value, sepol_obj->s.value, sepol_result->s.value, cil_rule, cond_node, cond_flavor);
if (rc != SEPOL_OK) goto exit;
}
}
}
rc = SEPOL_OK;
exit:
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
cil_list_destroy(&class_list, CIL_FALSE);
return rc;
}
int cil_type_rule_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_type_rule *cil_rule)
{
return __cil_type_rule_to_avtab(pdb, db, cil_rule, NULL, CIL_FALSE);
}
int __cil_typetransition_to_avtab(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans, cond_node_t *cond_node, enum cil_flavor cond_flavor, hashtab_t filename_trans_table)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_src = NULL;
type_datum_t *sepol_tgt = NULL;
class_datum_t *sepol_obj = NULL;
struct cil_list *class_list;
type_datum_t *sepol_result = NULL;
filename_trans_t *newkey = NULL;
filename_trans_datum_t *newdatum = NULL, *otype = NULL;
ebitmap_t src_bitmap, tgt_bitmap;
ebitmap_node_t *node1, *node2;
unsigned int i, j;
struct cil_list_item *c;
char *name = DATUM(typetrans->name)->name;
if (name == CIL_KEY_STAR) {
struct cil_type_rule trans;
trans.rule_kind = CIL_TYPE_TRANSITION;
trans.src = typetrans->src;
trans.tgt = typetrans->tgt;
trans.obj = typetrans->obj;
trans.result = typetrans->result;
trans.src_str = typetrans->src_str;
trans.tgt_str = typetrans->tgt_str;
trans.obj_str = typetrans->obj_str;
trans.result_str = typetrans->result_str;
return __cil_type_rule_to_avtab(pdb, db, &trans, cond_node, cond_flavor);
}
rc = __cil_expand_type(typetrans->src, &src_bitmap);
if (rc != SEPOL_OK) goto exit;
rc = __cil_expand_type(typetrans->tgt, &tgt_bitmap);
if (rc != SEPOL_OK) goto exit;
class_list = cil_expand_class(typetrans->obj);
rc = __cil_get_sepol_type_datum(pdb, DATUM(typetrans->result), &sepol_result);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&src_bitmap, node1, i) {
if (!ebitmap_get_bit(&src_bitmap, i)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[i]), &sepol_src);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&tgt_bitmap, node2, j) {
if (!ebitmap_get_bit(&tgt_bitmap, j)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[j]), &sepol_tgt);
if (rc != SEPOL_OK) goto exit;
cil_list_for_each(c, class_list) {
int add = CIL_TRUE;
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_obj);
if (rc != SEPOL_OK) goto exit;
newkey = cil_calloc(1, sizeof(*newkey));
newdatum = cil_calloc(1, sizeof(*newdatum));
newkey->stype = sepol_src->s.value;
newkey->ttype = sepol_tgt->s.value;
newkey->tclass = sepol_obj->s.value;
newkey->name = cil_strdup(name);
newdatum->otype = sepol_result->s.value;
rc = hashtab_insert(filename_trans_table, (hashtab_key_t)newkey, newdatum);
if (rc != SEPOL_OK) {
if (rc == SEPOL_EEXIST) {
add = CIL_FALSE;
otype = hashtab_search(filename_trans_table, (hashtab_key_t)newkey);
if (newdatum->otype != otype->otype) {
cil_log(CIL_ERR, "Conflicting name type transition rules\n");
} else {
rc = SEPOL_OK;
}
} else {
cil_log(CIL_ERR, "Out of memory\n");
}
}
if (add == CIL_TRUE) {
rc = hashtab_insert(pdb->filename_trans,
(hashtab_key_t)newkey,
newdatum);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR, "Out of memory\n");
goto exit;
}
} else {
free(newkey->name);
free(newkey);
free(newdatum);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
}
}
rc = SEPOL_OK;
exit:
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
cil_list_destroy(&class_list, CIL_FALSE);
return rc;
}
int cil_typetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_nametypetransition *typetrans, hashtab_t filename_trans_table)
{
return __cil_typetransition_to_avtab(pdb, db, typetrans, NULL, CIL_FALSE, filename_trans_table);
}
int __perm_str_to_datum(char *perm_str, class_datum_t *sepol_class, uint32_t *datum)
{
int rc;
perm_datum_t *sepol_perm;
common_datum_t *sepol_common;
sepol_perm = hashtab_search(sepol_class->permissions.table, perm_str);
if (sepol_perm == NULL) {
sepol_common = sepol_class->comdatum;
sepol_perm = hashtab_search(sepol_common->permissions.table, perm_str);
if (sepol_perm == NULL) {
cil_log(CIL_ERR, "Failed to find datum for perm %s\n", perm_str);
rc = SEPOL_ERR;
goto exit;
}
}
*datum |= 1 << (sepol_perm->s.value - 1);
return SEPOL_OK;
exit:
return rc;
}
int __cil_perms_to_datum(struct cil_list *perms, class_datum_t *sepol_class, uint32_t *datum)
{
int rc = SEPOL_ERR;
char *key = NULL;
struct cil_list_item *curr_perm;
struct cil_perm *cil_perm;
uint32_t data = 0;
cil_list_for_each(curr_perm, perms) {
cil_perm = curr_perm->data;
key = cil_perm->datum.fqn;
rc = __perm_str_to_datum(key, sepol_class, &data);
if (rc != SEPOL_OK) {
goto exit;
}
}
*datum = data;
return SEPOL_OK;
exit:
return rc;
}
int __cil_insert_avrule(policydb_t *pdb, uint32_t kind, uint32_t src, uint32_t tgt, uint32_t obj, uint32_t data, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_OK;
avtab_key_t avtab_key;
avtab_datum_t avtab_datum;
avtab_datum_t *avtab_dup = NULL;
avtab_key.source_type = src;
avtab_key.target_type = tgt;
avtab_key.target_class = obj;
switch (kind) {
case CIL_AVRULE_ALLOWED:
avtab_key.specified = AVTAB_ALLOWED;
break;
case CIL_AVRULE_AUDITALLOW:
avtab_key.specified = AVTAB_AUDITALLOW;
break;
case CIL_AVRULE_DONTAUDIT:
avtab_key.specified = AVTAB_AUDITDENY;
break;
default:
rc = SEPOL_ERR;
goto exit;
break;
}
if (!cond_node) {
avtab_dup = avtab_search(&pdb->te_avtab, &avtab_key);
if (!avtab_dup) {
avtab_datum.data = data;
rc = avtab_insert(&pdb->te_avtab, &avtab_key, &avtab_datum);
} else {
if (kind == CIL_AVRULE_DONTAUDIT)
avtab_dup->data &= data;
else
avtab_dup->data |= data;
}
} else {
avtab_datum.data = data;
rc = __cil_cond_insert_rule(&pdb->te_cond_avtab, &avtab_key, &avtab_datum, cond_node, cond_flavor);
}
exit:
return rc;
}
int __cil_avrule_expand_helper(policydb_t *pdb, uint16_t kind, struct cil_symtab_datum *src, struct cil_symtab_datum *tgt, struct cil_classperms *cp, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_src = NULL;
type_datum_t *sepol_tgt = NULL;
class_datum_t *sepol_class = NULL;
uint32_t data = 0;
rc = __cil_get_sepol_class_datum(pdb, DATUM(cp->class), &sepol_class);
if (rc != SEPOL_OK) goto exit;
rc = __cil_perms_to_datum(cp->perms, sepol_class, &data);
if (rc != SEPOL_OK) goto exit;
if (data == 0) {
/* No permissions, so don't insert rule. Maybe should return an error? */
return SEPOL_OK;
}
if (kind == CIL_AVRULE_DONTAUDIT) {
data = ~data;
}
rc = __cil_get_sepol_type_datum(pdb, src, &sepol_src);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_type_datum(pdb, tgt, &sepol_tgt);
if (rc != SEPOL_OK) goto exit;
rc = __cil_insert_avrule(pdb, kind, sepol_src->s.value, sepol_tgt->s.value, sepol_class->s.value, data, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
goto exit;
}
return SEPOL_OK;
exit:
return rc;
}
int __cil_avrule_expand(policydb_t *pdb, uint16_t kind, struct cil_symtab_datum *src, struct cil_symtab_datum *tgt, struct cil_list *classperms, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_ERR;
struct cil_list_item *curr;
cil_list_for_each(curr, classperms) {
if (curr->flavor == CIL_CLASSPERMS) {
struct cil_classperms *cp = curr->data;
if (FLAVOR(cp->class) == CIL_CLASS) {
rc = __cil_avrule_expand_helper(pdb, kind, src, tgt, cp, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
goto exit;
}
} else { /* MAP */
struct cil_list_item *i = NULL;
cil_list_for_each(i, cp->perms) {
struct cil_perm *cmp = i->data;
rc = __cil_avrule_expand(pdb, kind, src, tgt, cmp->classperms, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
} else { /* SET */
struct cil_classperms_set *cp_set = curr->data;
struct cil_classpermission *cp = cp_set->set;
rc = __cil_avrule_expand(pdb, kind, src, tgt, cp->classperms, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
return SEPOL_OK;
exit:
return rc;
}
static int __cil_should_expand_attribute( const struct cil_db *db, struct cil_symtab_datum *datum)
{
struct cil_tree_node *node;
struct cil_typeattribute *attr;
node = NODE(datum);
if (node->flavor != CIL_TYPEATTRIBUTE) {
return CIL_FALSE;
}
attr = (struct cil_typeattribute *)datum;
return !attr->keep || (ebitmap_cardinality(attr->types) < db->attrs_expand_size);
}
int __cil_avrule_to_avtab(policydb_t *pdb, const struct cil_db *db, struct cil_avrule *cil_avrule, cond_node_t *cond_node, enum cil_flavor cond_flavor)
{
int rc = SEPOL_ERR;
uint16_t kind = cil_avrule->rule_kind;
struct cil_symtab_datum *src = NULL;
struct cil_symtab_datum *tgt = NULL;
struct cil_list *classperms = cil_avrule->perms.classperms;
ebitmap_t src_bitmap, tgt_bitmap;
ebitmap_node_t *snode, *tnode;
unsigned int s,t;
if (cil_avrule->rule_kind == CIL_AVRULE_DONTAUDIT && db->disable_dontaudit == CIL_TRUE) {
// Do not add dontaudit rules to binary
rc = SEPOL_OK;
goto exit;
}
src = cil_avrule->src;
tgt = cil_avrule->tgt;
if (tgt->fqn == CIL_KEY_SELF) {
rc = __cil_expand_type(src, &src_bitmap);
if (rc != SEPOL_OK) {
goto exit;
}
ebitmap_for_each_bit(&src_bitmap, snode, s) {
if (!ebitmap_get_bit(&src_bitmap, s)) continue;
src = DATUM(db->val_to_type[s]);
rc = __cil_avrule_expand(pdb, kind, src, src, classperms, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
ebitmap_destroy(&src_bitmap);
goto exit;
}
}
ebitmap_destroy(&src_bitmap);
} else {
int expand_src = __cil_should_expand_attribute(db, src);
int expand_tgt = __cil_should_expand_attribute(db, tgt);
if (!expand_src && !expand_tgt) {
rc = __cil_avrule_expand(pdb, kind, src, tgt, classperms, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
goto exit;
}
} else if (expand_src && expand_tgt) {
rc = __cil_expand_type(src, &src_bitmap);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_expand_type(tgt, &tgt_bitmap);
if (rc != SEPOL_OK) {
ebitmap_destroy(&src_bitmap);
goto exit;
}
ebitmap_for_each_bit(&src_bitmap, snode, s) {
if (!ebitmap_get_bit(&src_bitmap, s)) continue;
src = DATUM(db->val_to_type[s]);
ebitmap_for_each_bit(&tgt_bitmap, tnode, t) {
if (!ebitmap_get_bit(&tgt_bitmap, t)) continue;
tgt = DATUM(db->val_to_type[t]);
rc = __cil_avrule_expand(pdb, kind, src, tgt, classperms, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
goto exit;
}
}
}
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
} else if (expand_src) {
rc = __cil_expand_type(src, &src_bitmap);
if (rc != SEPOL_OK) {
goto exit;
}
ebitmap_for_each_bit(&src_bitmap, snode, s) {
if (!ebitmap_get_bit(&src_bitmap, s)) continue;
src = DATUM(db->val_to_type[s]);
rc = __cil_avrule_expand(pdb, kind, src, tgt, classperms, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
ebitmap_destroy(&src_bitmap);
goto exit;
}
}
ebitmap_destroy(&src_bitmap);
} else { /* expand_tgt */
rc = __cil_expand_type(tgt, &tgt_bitmap);
if (rc != SEPOL_OK) {
goto exit;
}
ebitmap_for_each_bit(&tgt_bitmap, tnode, t) {
if (!ebitmap_get_bit(&tgt_bitmap, t)) continue;
tgt = DATUM(db->val_to_type[t]);
rc = __cil_avrule_expand(pdb, kind, src, tgt, classperms, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
ebitmap_destroy(&tgt_bitmap);
goto exit;
}
}
ebitmap_destroy(&tgt_bitmap);
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_avrule_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_avrule *cil_avrule)
{
return __cil_avrule_to_avtab(pdb, db, cil_avrule, NULL, CIL_FALSE);
}
// Copied from checkpolicy/policy_define.c
/* index of the u32 containing the permission */
#define XPERM_IDX(x) (x >> 5)
/* set bits 0 through x-1 within the u32 */
#define XPERM_SETBITS(x) ((1 << (x & 0x1f)) - 1)
/* low value for this u32 */
#define XPERM_LOW(x) (x << 5)
/* high value for this u32 */
#define XPERM_HIGH(x) (((x + 1) << 5) - 1)
void __avrule_xperm_setrangebits(uint16_t low, uint16_t high, struct avtab_extended_perms *xperms)
{
unsigned int i;
uint16_t h = high + 1;
/* for each u32 that this low-high range touches, set driver permissions */
for (i = XPERM_IDX(low); i <= XPERM_IDX(high); i++) {
/* set all bits in u32 */
if ((low <= XPERM_LOW(i)) && (high >= XPERM_HIGH(i)))
xperms->perms[i] |= ~0U;
/* set low bits */
else if ((low <= XPERM_LOW(i)) && (high < XPERM_HIGH(i)))
xperms->perms[i] |= XPERM_SETBITS(h);
/* set high bits */
else if ((low > XPERM_LOW(i)) && (high >= XPERM_HIGH(i)))
xperms->perms[i] |= ~0U - XPERM_SETBITS(low);
/* set middle bits */
else if ((low > XPERM_LOW(i)) && (high <= XPERM_HIGH(i)))
xperms->perms[i] |= XPERM_SETBITS(h) - XPERM_SETBITS(low);
}
}
#define IOC_DRIV(x) (x >> 8)
#define IOC_FUNC(x) (x & 0xff)
int __cil_permx_bitmap_to_sepol_xperms_list(ebitmap_t *xperms, struct cil_list **xperms_list)
{
ebitmap_node_t *node;
unsigned int i;
uint16_t low = 0, high = 0;
struct avtab_extended_perms *partial = NULL;
struct avtab_extended_perms *complete = NULL;
int start_new_range;
cil_list_init(xperms_list, CIL_NONE);
start_new_range = 1;
ebitmap_for_each_bit(xperms, node, i) {
if (!ebitmap_get_bit(xperms, i)) continue;
if (start_new_range) {
low = i;
start_new_range = 0;
}
// continue if the current bit isn't the end of the driver function or the next bit is set
if (IOC_FUNC(i) != 0xff && ebitmap_get_bit(xperms, i + 1)) {
continue;
}
// if we got here, i is the end of this range (either becuase the func
// is 0xff or the next bit isn't set). The next time around we are
// going to need a start a new range
high = i;
start_new_range = 1;
if (IOC_FUNC(low) == 0x00 && IOC_FUNC(high) == 0xff) {
if (!complete) {
complete = cil_calloc(1, sizeof(*complete));
complete->driver = 0x0;
complete->specified = AVTAB_XPERMS_IOCTLDRIVER;
}
__avrule_xperm_setrangebits(IOC_DRIV(low), IOC_DRIV(low), complete);
} else {
if (partial && partial->driver != IOC_DRIV(low)) {
cil_list_append(*xperms_list, CIL_NONE, partial);
partial = NULL;
}
if (!partial) {
partial = cil_calloc(1, sizeof(*partial));
partial->driver = IOC_DRIV(low);
partial->specified = AVTAB_XPERMS_IOCTLFUNCTION;
}
__avrule_xperm_setrangebits(IOC_FUNC(low), IOC_FUNC(high), partial);
}
}
if (partial) {
cil_list_append(*xperms_list, CIL_NONE, partial);
}
if (complete) {
cil_list_append(*xperms_list, CIL_NONE, complete);
}
return SEPOL_OK;
}
int __cil_avrulex_ioctl_to_policydb(hashtab_key_t k, hashtab_datum_t datum, void *args)
{
int rc = SEPOL_OK;
struct policydb *pdb;
avtab_key_t *avtab_key;
avtab_datum_t avtab_datum;
struct cil_list *xperms_list = NULL;
struct cil_list_item *item;
class_datum_t *sepol_obj;
uint32_t data = 0;
avtab_key = (avtab_key_t *)k;
pdb = args;
sepol_obj = pdb->class_val_to_struct[avtab_key->target_class - 1];
// setting the data for an extended avtab isn't really neccessary because
// it is ignored by the kernel. However, neverallow checking requires that
// the data value be set, so set it for that to work.
rc = __perm_str_to_datum(CIL_KEY_IOCTL, sepol_obj, &data);
if (rc != SEPOL_OK) {
goto exit;
}
avtab_datum.data = data;
rc = __cil_permx_bitmap_to_sepol_xperms_list(datum, &xperms_list);
if (rc != SEPOL_OK) {
goto exit;
}
cil_list_for_each(item, xperms_list) {
avtab_datum.xperms = item->data;
rc = avtab_insert(&pdb->te_avtab, avtab_key, &avtab_datum);
if (rc != SEPOL_OK) {
goto exit;
}
}
rc = SEPOL_OK;
exit:
if (xperms_list != NULL) {
cil_list_for_each(item, xperms_list) {
free(item->data);
}
cil_list_destroy(&xperms_list, CIL_FALSE);
}
// hashtab_t does not have a way to free keys or datum since it doesn't
// know what they are. We won't need the keys/datum after this function, so
// clean them up here.
free(avtab_key);
ebitmap_destroy(datum);
free(datum);
return rc;
}
int __cil_avrulex_ioctl_to_hashtable(hashtab_t h, uint16_t kind, uint32_t src, uint32_t tgt, uint32_t obj, ebitmap_t *xperms)
{
uint16_t specified;
avtab_key_t *avtab_key;
ebitmap_t *hashtab_xperms;
int rc = SEPOL_ERR;
switch (kind) {
case CIL_AVRULE_ALLOWED:
specified = AVTAB_XPERMS_ALLOWED;
break;
case CIL_AVRULE_AUDITALLOW:
specified = AVTAB_XPERMS_AUDITALLOW;
break;
case CIL_AVRULE_DONTAUDIT:
specified = AVTAB_XPERMS_DONTAUDIT;
break;
default:
rc = SEPOL_ERR;
goto exit;
}
avtab_key = cil_malloc(sizeof(*avtab_key));
avtab_key->source_type = src;
avtab_key->target_type = tgt;
avtab_key->target_class = obj;
avtab_key->specified = specified;
hashtab_xperms = (ebitmap_t *)hashtab_search(h, (hashtab_key_t)avtab_key);
if (!hashtab_xperms) {
hashtab_xperms = cil_malloc(sizeof(*hashtab_xperms));
rc = ebitmap_cpy(hashtab_xperms, xperms);
if (rc != SEPOL_OK) {
free(hashtab_xperms);
free(avtab_key);
goto exit;
}
rc = hashtab_insert(h, (hashtab_key_t)avtab_key, hashtab_xperms);
if (rc != SEPOL_OK) {
free(hashtab_xperms);
free(avtab_key);
goto exit;
}
} else {
free(avtab_key);
rc = ebitmap_union(hashtab_xperms, xperms);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int __cil_avrulex_to_hashtable_helper(policydb_t *pdb, uint16_t kind, struct cil_symtab_datum *src, struct cil_symtab_datum *tgt, struct cil_permissionx *permx, struct cil_args_binary *args)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_src = NULL;
type_datum_t *sepol_tgt = NULL;
class_datum_t *sepol_obj = NULL;
struct cil_list *class_list = NULL;
struct cil_list_item *c;
rc = __cil_get_sepol_type_datum(pdb, src, &sepol_src);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_type_datum(pdb, tgt, &sepol_tgt);
if (rc != SEPOL_OK) goto exit;
class_list = cil_expand_class(permx->obj);
cil_list_for_each(c, class_list) {
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_obj);
if (rc != SEPOL_OK) goto exit;
switch (permx->kind) {
case CIL_PERMX_KIND_IOCTL:
rc = __cil_avrulex_ioctl_to_hashtable(args->avrulex_ioctl_table, kind, sepol_src->s.value, sepol_tgt->s.value, sepol_obj->s.value, permx->perms);
if (rc != SEPOL_OK) goto exit;
break;
default:
rc = SEPOL_ERR;
goto exit;
}
}
rc = SEPOL_OK;
exit:
cil_list_destroy(&class_list, CIL_FALSE);
return rc;
}
int cil_avrulex_to_hashtable(policydb_t *pdb, const struct cil_db *db, struct cil_avrule *cil_avrulex, struct cil_args_binary *args)
{
int rc = SEPOL_ERR;
uint16_t kind;
struct cil_symtab_datum *src = NULL;
struct cil_symtab_datum *tgt = NULL;
ebitmap_t src_bitmap, tgt_bitmap;
ebitmap_node_t *snode, *tnode;
unsigned int s,t;
if (cil_avrulex->rule_kind == CIL_AVRULE_DONTAUDIT && db->disable_dontaudit == CIL_TRUE) {
// Do not add dontaudit rules to binary
rc = SEPOL_OK;
goto exit;
}
kind = cil_avrulex->rule_kind;
src = cil_avrulex->src;
tgt = cil_avrulex->tgt;
if (tgt->fqn == CIL_KEY_SELF) {
rc = __cil_expand_type(src, &src_bitmap);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&src_bitmap, snode, s) {
if (!ebitmap_get_bit(&src_bitmap, s)) continue;
src = DATUM(db->val_to_type[s]);
rc = __cil_avrulex_to_hashtable_helper(pdb, kind, src, src, cil_avrulex->perms.x.permx, args);
if (rc != SEPOL_OK) {
goto exit;
}
}
ebitmap_destroy(&src_bitmap);
} else {
int expand_src = __cil_should_expand_attribute(db, src);
int expand_tgt = __cil_should_expand_attribute(db, tgt);
if (!expand_src && !expand_tgt) {
rc = __cil_avrulex_to_hashtable_helper(pdb, kind, src, tgt, cil_avrulex->perms.x.permx, args);
if (rc != SEPOL_OK) {
goto exit;
}
} else if (expand_src && expand_tgt) {
rc = __cil_expand_type(src, &src_bitmap);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_expand_type(tgt, &tgt_bitmap);
if (rc != SEPOL_OK) {
ebitmap_destroy(&src_bitmap);
goto exit;
}
ebitmap_for_each_bit(&src_bitmap, snode, s) {
if (!ebitmap_get_bit(&src_bitmap, s)) continue;
src = DATUM(db->val_to_type[s]);
ebitmap_for_each_bit(&tgt_bitmap, tnode, t) {
if (!ebitmap_get_bit(&tgt_bitmap, t)) continue;
tgt = DATUM(db->val_to_type[t]);
rc = __cil_avrulex_to_hashtable_helper(pdb, kind, src, tgt, cil_avrulex->perms.x.permx, args);
if (rc != SEPOL_OK) {
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
goto exit;
}
}
}
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
} else if (expand_src) {
rc = __cil_expand_type(src, &src_bitmap);
if (rc != SEPOL_OK) {
goto exit;
}
ebitmap_for_each_bit(&src_bitmap, snode, s) {
if (!ebitmap_get_bit(&src_bitmap, s)) continue;
src = DATUM(db->val_to_type[s]);
rc = __cil_avrulex_to_hashtable_helper(pdb, kind, src, tgt, cil_avrulex->perms.x.permx, args);
if (rc != SEPOL_OK) {
ebitmap_destroy(&src_bitmap);
goto exit;
}
}
ebitmap_destroy(&src_bitmap);
} else { /* expand_tgt */
rc = __cil_expand_type(tgt, &tgt_bitmap);
if (rc != SEPOL_OK) {
goto exit;
}
ebitmap_for_each_bit(&tgt_bitmap, tnode, t) {
if (!ebitmap_get_bit(&tgt_bitmap, t)) continue;
tgt = DATUM(db->val_to_type[t]);
rc = __cil_avrulex_to_hashtable_helper(pdb, kind, src, tgt, cil_avrulex->perms.x.permx, args);
if (rc != SEPOL_OK) {
ebitmap_destroy(&tgt_bitmap);
goto exit;
}
}
ebitmap_destroy(&tgt_bitmap);
}
}
return SEPOL_OK;
exit:
return rc;
}
int __cil_cond_to_policydb_helper(struct cil_tree_node *node, __attribute__((unused)) uint32_t *finished, void *extra_args)
{
int rc;
enum cil_flavor flavor;
struct cil_args_booleanif *args = extra_args;
const struct cil_db *db = args->db;
policydb_t *pdb = args->pdb;
cond_node_t *cond_node = args->cond_node;
enum cil_flavor cond_flavor = args->cond_flavor;
struct cil_type_rule *cil_type_rule;
struct cil_avrule *cil_avrule;
struct cil_nametypetransition *cil_typetrans;
hashtab_t filename_trans_table = args->filename_trans_table;
flavor = node->flavor;
switch (flavor) {
case CIL_NAMETYPETRANSITION:
cil_typetrans = (struct cil_nametypetransition*)node->data;
if (DATUM(cil_typetrans->name)->fqn != CIL_KEY_STAR) {
cil_log(CIL_ERR, "typetransition with file name not allowed within a booleanif block.\n");
cil_tree_log(node, CIL_ERR,"Invalid typetransition statement");
goto exit;
}
rc = __cil_typetransition_to_avtab(pdb, db, cil_typetrans, cond_node, cond_flavor, filename_trans_table);
if (rc != SEPOL_OK) {
cil_tree_log(node, CIL_ERR, "Failed to insert type transition into avtab");
goto exit;
}
break;
case CIL_TYPE_RULE:
cil_type_rule = node->data;
rc = __cil_type_rule_to_avtab(pdb, db, cil_type_rule, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
cil_tree_log(node, CIL_ERR, "Failed to insert typerule into avtab");
goto exit;
}
break;
case CIL_AVRULE:
cil_avrule = node->data;
rc = __cil_avrule_to_avtab(pdb, db, cil_avrule, cond_node, cond_flavor);
if (rc != SEPOL_OK) {
cil_tree_log(node, CIL_ERR, "Failed to insert avrule into avtab");
goto exit;
}
break;
case CIL_CALL:
case CIL_TUNABLEIF:
break;
default:
cil_tree_log(node, CIL_ERR, "Invalid statement within booleanif");
goto exit;
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
static void __cil_expr_to_string(struct cil_list *expr, enum cil_flavor flavor, char **out);
static void __cil_expr_to_string_helper(struct cil_list_item *curr, enum cil_flavor flavor, char **out)
{
char *c;
if (curr->flavor == CIL_DATUM) {
*out = cil_strdup(DATUM(curr->data)->fqn);
} else if (curr->flavor == CIL_LIST) {
__cil_expr_to_string(curr->data, flavor, &c);
cil_asprintf(out, "(%s)", c);
free(c);
} else if (flavor == CIL_PERMISSIONX) {
// permissionx expressions aren't resolved into anything, so curr->flavor
// is just a CIL_STRING, not a CIL_DATUM, so just check on flavor for those
*out = cil_strdup(curr->data);
}
}
static void __cil_expr_to_string(struct cil_list *expr, enum cil_flavor flavor, char **out)
{
struct cil_list_item *curr;
char *s1 = NULL;
char *s2 = NULL;
enum cil_flavor op;
if (expr == NULL || expr->head == NULL) {
*out = cil_strdup("");
return;
}
curr = expr->head;
if (curr->flavor == CIL_OP) {
op = (enum cil_flavor)curr->data;
if (op == CIL_ALL) {
*out = cil_strdup(CIL_KEY_ALL);
} else if (op == CIL_RANGE) {
__cil_expr_to_string_helper(curr->next, flavor, &s1);
__cil_expr_to_string_helper(curr->next->next, flavor, &s2);
cil_asprintf(out, "%s %s %s", CIL_KEY_RANGE, s1, s2);
free(s1);
free(s2);
} else {
__cil_expr_to_string_helper(curr->next, flavor, &s1);
if (op == CIL_NOT) {
cil_asprintf(out, "%s %s", CIL_KEY_NOT, s1);
free(s1);
} else {
const char *opstr = "";
__cil_expr_to_string_helper(curr->next->next, flavor, &s2);
if (op == CIL_OR) {
opstr = CIL_KEY_OR;
} else if (op == CIL_AND) {
opstr = CIL_KEY_AND;
} else if (op == CIL_XOR) {
opstr = CIL_KEY_XOR;
}
cil_asprintf(out, "%s %s %s", opstr, s1, s2);
free(s1);
free(s2);
}
}
} else {
char *c1 = NULL;
char *c2 = NULL;
__cil_expr_to_string_helper(curr, flavor, &c1);
for (curr = curr->next; curr; curr = curr->next) {
s1 = NULL;
__cil_expr_to_string_helper(curr, flavor, &s1);
cil_asprintf(&c2, "%s %s", c1, s1);
free(c1);
free(s1);
c1 = c2;
}
*out = c1;
}
}
static int __cil_cond_expr_to_sepol_expr_helper(policydb_t *pdb, struct cil_list *cil_expr, cond_expr_t **head, cond_expr_t **tail);
static int __cil_cond_item_to_sepol_expr(policydb_t *pdb, struct cil_list_item *item, cond_expr_t **head, cond_expr_t **tail)
{
if (item == NULL) {
goto exit;
} else if (item->flavor == CIL_DATUM) {
char *key = DATUM(item->data)->fqn;
cond_bool_datum_t *sepol_bool = hashtab_search(pdb->p_bools.table, key);
if (sepol_bool == NULL) {
cil_log(CIL_INFO, "Failed to find boolean\n");
goto exit;
}
*head = cil_malloc(sizeof(cond_expr_t));
(*head)->next = NULL;
(*head)->expr_type = COND_BOOL;
(*head)->bool = sepol_bool->s.value;
*tail = *head;
} else if (item->flavor == CIL_LIST) {
struct cil_list *l = item->data;
int rc = __cil_cond_expr_to_sepol_expr_helper(pdb, l, head, tail);
if (rc != SEPOL_OK) {
goto exit;
}
} else {
goto exit;
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
static int __cil_cond_expr_to_sepol_expr_helper(policydb_t *pdb, struct cil_list *cil_expr, cond_expr_t **head, cond_expr_t **tail)
{
int rc = SEPOL_ERR;
struct cil_list_item *item = cil_expr->head;
enum cil_flavor flavor = cil_expr->flavor;
cond_expr_t *op, *h1, *h2, *t1, *t2;
if (flavor != CIL_BOOL) {
cil_log(CIL_INFO, "Expected boolean expression\n");
goto exit;
}
if (item == NULL) {
goto exit;
} else if (item->flavor == CIL_OP) {
enum cil_flavor cil_op = (enum cil_flavor)item->data;
op = cil_malloc(sizeof(*op));
op->bool = 0;
op->next = NULL;
switch (cil_op) {
case CIL_NOT:
op->expr_type = COND_NOT;
break;
case CIL_OR:
op->expr_type = COND_OR;
break;
case CIL_AND:
op->expr_type = COND_AND;
break;
case CIL_XOR:
op->expr_type = COND_XOR;
break;
case CIL_EQ:
op->expr_type = COND_EQ;
break;
case CIL_NEQ:
op->expr_type = COND_NEQ;
break;
default:
free(op);
goto exit;
}
rc = __cil_cond_item_to_sepol_expr(pdb, item->next, &h1, &t1);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failed to get first operand of conditional expression\n");
free(op);
goto exit;
}
if (cil_op == CIL_NOT) {
*head = h1;
t1->next = op;
*tail = op;
} else {
rc = __cil_cond_item_to_sepol_expr(pdb, item->next->next, &h2, &t2);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failed to get second operand of conditional expression\n");
free(op);
cond_expr_destroy(h1);
goto exit;
}
*head = h1;
t1->next = h2;
t2->next = op;
*tail = op;
}
} else {
rc = __cil_cond_item_to_sepol_expr(pdb, item, &h1, &t1);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failed to get initial item in conditional list\n");
goto exit;
}
*head = h1;
for (item = item->next; item; item = item->next) {
rc = __cil_cond_item_to_sepol_expr(pdb, item, &h2, &t2);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failed to get item in conditional list\n");
cond_expr_destroy(*head);
goto exit;
}
op = cil_malloc(sizeof(*op));
op->bool = 0;
op->next = NULL;
op->expr_type = COND_OR;
t1->next = h2;
t2->next = op;
t1 = op;
}
*tail = t1;
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
static int __cil_cond_expr_to_sepol_expr(policydb_t *pdb, struct cil_list *cil_expr, cond_expr_t **sepol_expr)
{
int rc;
cond_expr_t *head, *tail;
rc = __cil_cond_expr_to_sepol_expr_helper(pdb, cil_expr, &head, &tail);
if (rc != SEPOL_OK) {
return SEPOL_ERR;
}
*sepol_expr = head;
return SEPOL_OK;
}
int cil_booleanif_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_tree_node *node, hashtab_t filename_trans_table)
{
int rc = SEPOL_ERR;
struct cil_args_booleanif bool_args;
struct cil_booleanif *cil_boolif = (struct cil_booleanif*)node->data;
struct cil_tree_node *cb_node = node->cl_head;
struct cil_tree_node *true_node = NULL;
struct cil_tree_node *false_node = NULL;
struct cil_tree_node *tmp_node = NULL;
cond_node_t *tmp_cond = NULL;
cond_node_t *cond_node = NULL;
int was_created;
int swapped = CIL_FALSE;
cond_av_list_t tmp_cl;
tmp_cond = cond_node_create(pdb, NULL);
if (tmp_cond == NULL) {
rc = SEPOL_ERR;
cil_tree_log(node, CIL_INFO, "Failed to create sepol conditional node");
goto exit;
}
rc = __cil_cond_expr_to_sepol_expr(pdb, cil_boolif->datum_expr, &tmp_cond->expr);
if (rc != SEPOL_OK) {
cil_tree_log(node, CIL_INFO, "Failed to convert CIL conditional expression to sepol expression");
goto exit;
}
tmp_cond->true_list = &tmp_cl;
rc = cond_normalize_expr(pdb, tmp_cond);
if (rc != SEPOL_OK) {
goto exit;
}
if (tmp_cond->false_list != NULL) {
tmp_cond->true_list = NULL;
swapped = CIL_TRUE;
}
cond_node = cond_node_find(pdb, tmp_cond, pdb->cond_list, &was_created);
if (cond_node == NULL) {
rc = SEPOL_ERR;
goto exit;
}
if (was_created) {
cond_node->next = pdb->cond_list;
pdb->cond_list = cond_node;
}
cond_expr_destroy(tmp_cond->expr);
free(tmp_cond);
tmp_cond = NULL;
for (cb_node = node->cl_head; cb_node != NULL; cb_node = cb_node->next) {
if (cb_node->flavor == CIL_CONDBLOCK) {
struct cil_condblock *cb = cb_node->data;
if (cb->flavor == CIL_CONDTRUE) {
true_node = cb_node;
} else if (cb->flavor == CIL_CONDFALSE) {
false_node = cb_node;
}
}
}
if (swapped) {
tmp_node = true_node;
true_node = false_node;
false_node = tmp_node;
}
bool_args.db = db;
bool_args.pdb = pdb;
bool_args.cond_node = cond_node;
bool_args.filename_trans_table = filename_trans_table;
if (true_node != NULL) {
bool_args.cond_flavor = CIL_CONDTRUE;
rc = cil_tree_walk(true_node, __cil_cond_to_policydb_helper, NULL, NULL, &bool_args);
if (rc != SEPOL_OK) {
cil_tree_log(true_node, CIL_ERR, "Failure while walking true conditional block");
goto exit;
}
}
if (false_node != NULL) {
bool_args.cond_flavor = CIL_CONDFALSE;
rc = cil_tree_walk(false_node, __cil_cond_to_policydb_helper, NULL, NULL, &bool_args);
if (rc != SEPOL_OK) {
cil_tree_log(false_node, CIL_ERR, "Failure while walking false conditional block");
goto exit;
}
}
return SEPOL_OK;
exit:
if (tmp_cond) {
if (tmp_cond->expr)
cond_expr_destroy(tmp_cond->expr);
free(tmp_cond);
}
return rc;
}
int cil_roletrans_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_roletransition *roletrans, hashtab_t role_trans_table)
{
int rc = SEPOL_ERR;
role_datum_t *sepol_src = NULL;
type_datum_t *sepol_tgt = NULL;
class_datum_t *sepol_obj = NULL;
struct cil_list *class_list;
role_datum_t *sepol_result = NULL;
role_trans_t *new = NULL;
uint32_t *new_role = NULL;
ebitmap_t role_bitmap, type_bitmap;
ebitmap_node_t *rnode, *tnode;
unsigned int i, j;
struct cil_list_item *c;
rc = __cil_expand_role(DATUM(roletrans->src), &role_bitmap);
if (rc != SEPOL_OK) goto exit;
rc = __cil_expand_type(roletrans->tgt, &type_bitmap);
if (rc != SEPOL_OK) goto exit;
class_list = cil_expand_class(roletrans->obj);
rc = __cil_get_sepol_role_datum(pdb, DATUM(roletrans->result), &sepol_result);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&role_bitmap, rnode, i) {
if (!ebitmap_get_bit(&role_bitmap, i)) continue;
rc = __cil_get_sepol_role_datum(pdb, DATUM(db->val_to_role[i]), &sepol_src);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&type_bitmap, tnode, j) {
if (!ebitmap_get_bit(&type_bitmap, j)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[j]), &sepol_tgt);
if (rc != SEPOL_OK) goto exit;
cil_list_for_each(c, class_list) {
int add = CIL_TRUE;
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_obj);
if (rc != SEPOL_OK) goto exit;
new = cil_malloc(sizeof(*new));
memset(new, 0, sizeof(*new));
new->role = sepol_src->s.value;
new->type = sepol_tgt->s.value;
new->tclass = sepol_obj->s.value;
new->new_role = sepol_result->s.value;
rc = hashtab_insert(role_trans_table, (hashtab_key_t)new, &(new->new_role));
if (rc != SEPOL_OK) {
if (rc == SEPOL_EEXIST) {
add = CIL_FALSE;
new_role = hashtab_search(role_trans_table, (hashtab_key_t)new);
if (new->new_role != *new_role) {
cil_log(CIL_ERR, "Conflicting role transition rules\n");
} else {
rc = SEPOL_OK;
}
} else {
cil_log(CIL_ERR, "Out of memory\n");
}
}
if (add == CIL_TRUE) {
new->next = pdb->role_tr;
pdb->role_tr = new;
} else {
free(new);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
}
}
rc = SEPOL_OK;
exit:
ebitmap_destroy(&role_bitmap);
ebitmap_destroy(&type_bitmap);
cil_list_destroy(&class_list, CIL_FALSE);
return rc;
}
int cil_roleallow_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_roleallow *roleallow)
{
int rc = SEPOL_ERR;
role_datum_t *sepol_src = NULL;
role_datum_t *sepol_tgt = NULL;
role_allow_t *sepol_roleallow = NULL;
ebitmap_t src_bitmap, tgt_bitmap;
ebitmap_node_t *node1, *node2;
unsigned int i, j;
rc = __cil_expand_role(roleallow->src, &src_bitmap);
if (rc != SEPOL_OK) goto exit;
rc = __cil_expand_role(roleallow->tgt, &tgt_bitmap);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&src_bitmap, node1, i) {
if (!ebitmap_get_bit(&src_bitmap, i)) continue;
rc = __cil_get_sepol_role_datum(pdb, DATUM(db->val_to_role[i]), &sepol_src);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&tgt_bitmap, node2, j) {
if (!ebitmap_get_bit(&tgt_bitmap, j)) continue;
rc = __cil_get_sepol_role_datum(pdb, DATUM(db->val_to_role[j]), &sepol_tgt);
if (rc != SEPOL_OK) goto exit;
sepol_roleallow = cil_malloc(sizeof(*sepol_roleallow));
memset(sepol_roleallow, 0, sizeof(role_allow_t));
sepol_roleallow->role = sepol_src->s.value;
sepol_roleallow->new_role = sepol_tgt->s.value;
sepol_roleallow->next = pdb->role_allow;
pdb->role_allow = sepol_roleallow;
}
}
rc = SEPOL_OK;
exit:
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
return rc;
}
int __cil_constrain_expr_datum_to_sepol_expr(policydb_t *pdb, const struct cil_db *db, struct cil_list_item *item, enum cil_flavor expr_flavor, constraint_expr_t *expr)
{
int rc = SEPOL_ERR;
if (expr_flavor == CIL_USER) {
user_datum_t *sepol_user = NULL;
ebitmap_t user_bitmap;
ebitmap_node_t *unode;
unsigned int i;
rc = __cil_expand_user(item->data, &user_bitmap);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&user_bitmap, unode, i) {
if (!ebitmap_get_bit(&user_bitmap, i)) {
continue;
}
rc = __cil_get_sepol_user_datum(pdb, DATUM(db->val_to_user[i]), &sepol_user);
if (rc != SEPOL_OK) {
ebitmap_destroy(&user_bitmap);
goto exit;
}
if (ebitmap_set_bit(&expr->names, sepol_user->s.value - 1, 1)) {
ebitmap_destroy(&user_bitmap);
goto exit;
}
}
ebitmap_destroy(&user_bitmap);
} else if (expr_flavor == CIL_ROLE) {
role_datum_t *sepol_role = NULL;
ebitmap_t role_bitmap;
ebitmap_node_t *rnode;
unsigned int i;
rc = __cil_expand_role(item->data, &role_bitmap);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&role_bitmap, rnode, i) {
if (!ebitmap_get_bit(&role_bitmap, i)) continue;
rc = __cil_get_sepol_role_datum(pdb, DATUM(db->val_to_role[i]), &sepol_role);
if (rc != SEPOL_OK) {
ebitmap_destroy(&role_bitmap);
goto exit;
}
if (ebitmap_set_bit(&expr->names, sepol_role->s.value - 1, 1)) {
ebitmap_destroy(&role_bitmap);
goto exit;
}
}
ebitmap_destroy(&role_bitmap);
} else if (expr_flavor == CIL_TYPE) {
type_datum_t *sepol_type = NULL;
ebitmap_t type_bitmap;
ebitmap_node_t *tnode;
unsigned int i;
if (pdb->policyvers >= POLICYDB_VERSION_CONSTRAINT_NAMES) {
rc = __cil_get_sepol_type_datum(pdb, item->data, &sepol_type);
if (rc != SEPOL_OK) {
if (FLAVOR(item->data) == CIL_TYPEATTRIBUTE) {
struct cil_typeattribute *attr = item->data;
if (!attr->keep) {
rc = 0;
}
}
}
if (sepol_type) {
rc = ebitmap_set_bit(&expr->type_names->types, sepol_type->s.value - 1, 1);
}
if (rc != SEPOL_OK) {
goto exit;
}
}
rc = __cil_expand_type(item->data, &type_bitmap);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&type_bitmap, tnode, i) {
if (!ebitmap_get_bit(&type_bitmap, i)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[i]), &sepol_type);
if (rc != SEPOL_OK) {
ebitmap_destroy(&type_bitmap);
goto exit;
}
if (ebitmap_set_bit(&expr->names, sepol_type->s.value - 1, 1)) {
ebitmap_destroy(&type_bitmap);
goto exit;
}
}
ebitmap_destroy(&type_bitmap);
} else {
goto exit;
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
int __cil_constrain_expr_leaf_to_sepol_expr(policydb_t *pdb, const struct cil_db *db, struct cil_list_item *op_item, enum cil_flavor expr_flavor, constraint_expr_t *expr)
{
int rc = SEPOL_ERR;
struct cil_list_item *l_item = op_item->next;
struct cil_list_item *r_item = op_item->next->next;
enum cil_flavor l_operand = (enum cil_flavor)l_item->data;
switch (l_operand) {
case CIL_CONS_U1:
expr->attr = CEXPR_USER;
break;
case CIL_CONS_U2:
expr->attr = CEXPR_USER | CEXPR_TARGET;
break;
case CIL_CONS_U3:
expr->attr = CEXPR_USER | CEXPR_XTARGET;
break;
case CIL_CONS_R1:
expr->attr = CEXPR_ROLE;
break;
case CIL_CONS_R2:
expr->attr = CEXPR_ROLE | CEXPR_TARGET;
break;
case CIL_CONS_R3:
expr->attr = CEXPR_ROLE | CEXPR_XTARGET;
break;
case CIL_CONS_T1:
expr->attr = CEXPR_TYPE;
break;
case CIL_CONS_T2:
expr->attr = CEXPR_TYPE | CEXPR_TARGET;
break;
case CIL_CONS_T3:
expr->attr = CEXPR_TYPE | CEXPR_XTARGET;
break;
case CIL_CONS_L1: {
enum cil_flavor r_operand = (enum cil_flavor)r_item->data;
if (r_operand == CIL_CONS_L2) {
expr->attr = CEXPR_L1L2;
} else if (r_operand == CIL_CONS_H1) {
expr->attr = CEXPR_L1H1;
} else {
expr->attr = CEXPR_L1H2;
}
break;
}
case CIL_CONS_L2:
expr->attr = CEXPR_L2H2;
break;
case CIL_CONS_H1: {
enum cil_flavor r_operand = (enum cil_flavor)r_item->data;
if (r_operand == CIL_CONS_L2) {
expr->attr = CEXPR_H1L2;
} else {
expr->attr = CEXPR_H1H2;
}
break;
}
default:
goto exit;
break;
}
if (r_item->flavor == CIL_CONS_OPERAND) {
expr->expr_type = CEXPR_ATTR;
} else {
expr->expr_type = CEXPR_NAMES;
if (r_item->flavor == CIL_DATUM) {
rc = __cil_constrain_expr_datum_to_sepol_expr(pdb, db, r_item, expr_flavor, expr);
if (rc != SEPOL_OK) {
goto exit;
}
} else if (r_item->flavor == CIL_LIST) {
struct cil_list *r_expr = r_item->data;
struct cil_list_item *curr;
cil_list_for_each(curr, r_expr) {
rc = __cil_constrain_expr_datum_to_sepol_expr(pdb, db, curr, expr_flavor, expr);
if (rc != SEPOL_OK) {
goto exit;
}
}
} else {
rc = SEPOL_ERR;
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int __cil_constrain_expr_to_sepol_expr_helper(policydb_t *pdb, const struct cil_db *db, const struct cil_list *cil_expr, constraint_expr_t **head, constraint_expr_t **tail)
{
int rc = SEPOL_ERR;
struct cil_list_item *item;
enum cil_flavor flavor;
constraint_expr_t *op, *h1, *h2, *t1, *t2;
int is_leaf = CIL_FALSE;
if (cil_expr == NULL) {
return SEPOL_ERR;
}
item = cil_expr->head;
flavor = cil_expr->flavor;
op = cil_malloc(sizeof(constraint_expr_t));
rc = constraint_expr_init(op);
if (rc != SEPOL_OK) {
goto exit;
}
enum cil_flavor cil_op = (enum cil_flavor)item->data;
switch (cil_op) {
case CIL_NOT:
op->expr_type = CEXPR_NOT;
break;
case CIL_AND:
op->expr_type = CEXPR_AND;
break;
case CIL_OR:
op->expr_type = CEXPR_OR;
break;
case CIL_EQ:
op->op = CEXPR_EQ;
is_leaf = CIL_TRUE;
break;
case CIL_NEQ:
op->op = CEXPR_NEQ;
is_leaf = CIL_TRUE;
break;
case CIL_CONS_DOM:
op->op = CEXPR_DOM;
is_leaf = CIL_TRUE;
break;
case CIL_CONS_DOMBY:
op->op = CEXPR_DOMBY;
is_leaf = CIL_TRUE;
break;
case CIL_CONS_INCOMP:
op->op = CEXPR_INCOMP;
is_leaf = CIL_TRUE;
break;
default:
goto exit;
}
if (is_leaf == CIL_TRUE) {
rc = __cil_constrain_expr_leaf_to_sepol_expr(pdb, db, item, flavor, op);
if (rc != SEPOL_OK) {
goto exit;
}
*head = op;
*tail = op;
} else if (cil_op == CIL_NOT) {
struct cil_list *l_expr = item->next->data;
rc = __cil_constrain_expr_to_sepol_expr_helper(pdb, db, l_expr, &h1, &t1);
if (rc != SEPOL_OK) {
goto exit;
}
t1->next = op;
*head = h1;
*tail = op;
} else {
struct cil_list *l_expr = item->next->data;
struct cil_list *r_expr = item->next->next->data;
rc = __cil_constrain_expr_to_sepol_expr_helper(pdb, db, l_expr, &h1, &t1);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_constrain_expr_to_sepol_expr_helper(pdb, db, r_expr, &h2, &t2);
if (rc != SEPOL_OK) {
constraint_expr_destroy(h1);
goto exit;
}
t1->next = h2;
t2->next = op;
*head = h1;
*tail = op;
}
return SEPOL_OK;
exit:
constraint_expr_destroy(op);
return SEPOL_ERR;
}
int __cil_constrain_expr_to_sepol_expr(policydb_t *pdb, const struct cil_db *db, const struct cil_list *cil_expr, constraint_expr_t **sepol_expr)
{
int rc;
constraint_expr_t *head, *tail;
rc = __cil_constrain_expr_to_sepol_expr_helper(pdb, db, cil_expr, &head, &tail);
if (rc != SEPOL_OK) {
return SEPOL_ERR;
}
*sepol_expr = head;
return SEPOL_OK;
}
int cil_constrain_to_policydb_helper(policydb_t *pdb, const struct cil_db *db, struct cil_symtab_datum *class, struct cil_list *perms, struct cil_list *expr)
{
int rc = SEPOL_ERR;
constraint_node_t *sepol_constrain = NULL;
constraint_expr_t *sepol_expr = NULL;
class_datum_t *sepol_class = NULL;
sepol_constrain = cil_malloc(sizeof(*sepol_constrain));
memset(sepol_constrain, 0, sizeof(constraint_node_t));
rc = __cil_get_sepol_class_datum(pdb, class, &sepol_class);
if (rc != SEPOL_OK) goto exit;
rc = __cil_perms_to_datum(perms, sepol_class, &sepol_constrain->permissions);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_constrain_expr_to_sepol_expr(pdb, db, expr, &sepol_expr);
if (rc != SEPOL_OK) {
goto exit;
}
sepol_constrain->expr = sepol_expr;
sepol_constrain->next = sepol_class->constraints;
sepol_class->constraints = sepol_constrain;
return SEPOL_OK;
exit:
free(sepol_constrain);
return rc;
}
int cil_constrain_expand(policydb_t *pdb, const struct cil_db *db, struct cil_list *classperms, struct cil_list *expr)
{
int rc = SEPOL_ERR;
struct cil_list_item *curr;
cil_list_for_each(curr, classperms) {
if (curr->flavor == CIL_CLASSPERMS) {
struct cil_classperms *cp = curr->data;
if (FLAVOR(cp->class) == CIL_CLASS) {
rc = cil_constrain_to_policydb_helper(pdb, db, DATUM(cp->class), cp->perms, expr);
if (rc != SEPOL_OK) {
goto exit;
}
} else { /* MAP */
struct cil_list_item *i = NULL;
cil_list_for_each(i, cp->perms) {
struct cil_perm *cmp = i->data;
rc = cil_constrain_expand(pdb, db, cmp->classperms, expr);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
} else { /* SET */
struct cil_classperms_set *cp_set = curr->data;
struct cil_classpermission *cp = cp_set->set;
rc = cil_constrain_expand(pdb, db, cp->classperms, expr);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_constrain_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_constrain *cil_constrain)
{
int rc = SEPOL_ERR;
rc = cil_constrain_expand(pdb, db, cil_constrain->classperms, cil_constrain->datum_expr);
if (rc != SEPOL_OK) {
goto exit;
}
return SEPOL_OK;
exit:
cil_log(CIL_ERR, "Failed to insert constraint into policydb\n");
return rc;
}
int cil_validatetrans_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_validatetrans *cil_validatetrans)
{
int rc = SEPOL_ERR;
struct cil_list *expr = cil_validatetrans->datum_expr;
class_datum_t *sepol_class = NULL;
struct cil_list *class_list;
constraint_node_t *sepol_validatetrans = NULL;
constraint_expr_t *sepol_expr = NULL;
struct cil_list_item *c;
class_list = cil_expand_class(cil_validatetrans->class);
cil_list_for_each(c, class_list) {
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_class);
if (rc != SEPOL_OK) goto exit;
sepol_validatetrans = cil_malloc(sizeof(*sepol_validatetrans));
memset(sepol_validatetrans, 0, sizeof(constraint_node_t));
rc = __cil_constrain_expr_to_sepol_expr(pdb, db, expr, &sepol_expr);
if (rc != SEPOL_OK) {
free(sepol_validatetrans);
goto exit;
}
sepol_validatetrans->expr = sepol_expr;
sepol_validatetrans->next = sepol_class->validatetrans;
sepol_class->validatetrans = sepol_validatetrans;
}
rc = SEPOL_OK;
exit:
cil_list_destroy(&class_list, CIL_FALSE);
return rc;
}
int __cil_cats_to_mls_level(policydb_t *pdb, struct cil_cats *cats, mls_level_t *mls_level)
{
int rc = SEPOL_ERR;
struct cil_list_item *i;
cat_datum_t *sepol_cat = NULL;
cil_list_for_each(i, cats->datum_expr) {
struct cil_tree_node *node = DATUM(i->data)->nodes->head->data;
if (node->flavor == CIL_CATSET) {
struct cil_list_item *j;
struct cil_catset *cs = i->data;
cil_list_for_each(j, cs->cats->datum_expr) {
rc = __cil_get_sepol_cat_datum(pdb, j->data, &sepol_cat);
if (rc != SEPOL_OK) goto exit;
rc = ebitmap_set_bit(&mls_level->cat, sepol_cat->s.value - 1, 1);
if (rc != SEPOL_OK) goto exit;
}
} else {
rc = __cil_get_sepol_cat_datum(pdb, i->data, &sepol_cat);
if (rc != SEPOL_OK) goto exit;
rc = ebitmap_set_bit(&mls_level->cat, sepol_cat->s.value - 1, 1);
if (rc != SEPOL_OK) goto exit;
}
}
return SEPOL_OK;
exit:
return SEPOL_ERR;
}
int cil_sepol_level_define(policydb_t *pdb, struct cil_sens *cil_sens)
{
int rc = SEPOL_ERR;
struct cil_list_item *curr;
level_datum_t *sepol_level = NULL;
mls_level_t *mls_level = NULL;
rc = __cil_get_sepol_level_datum(pdb, DATUM(cil_sens), &sepol_level);
if (rc != SEPOL_OK) goto exit;
mls_level = sepol_level->level;
ebitmap_init(&mls_level->cat);
if (cil_sens->cats_list) {
cil_list_for_each(curr, cil_sens->cats_list) {
struct cil_cats *cats = curr->data;
rc = __cil_cats_to_mls_level(pdb, cats, mls_level);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failed to insert category set into sepol mls level\n");
goto exit;
}
}
}
sepol_level->defined = 1;
return SEPOL_OK;
exit:
return rc;
}
int cil_level_to_mls_level(policydb_t *pdb, struct cil_level *cil_level, mls_level_t *mls_level)
{
int rc = SEPOL_ERR;
struct cil_sens *cil_sens = cil_level->sens;
struct cil_cats *cats = cil_level->cats;
level_datum_t *sepol_level = NULL;
rc = __cil_get_sepol_level_datum(pdb, DATUM(cil_sens), &sepol_level);
if (rc != SEPOL_OK) goto exit;
mls_level->sens = sepol_level->level->sens;
ebitmap_init(&mls_level->cat);
if (cats != NULL) {
rc = __cil_cats_to_mls_level(pdb, cats, mls_level);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failed to insert category set into sepol mls level\n");
goto exit;
}
}
rc = SEPOL_OK;
exit:
return rc;
}
int __cil_levelrange_to_mls_range(policydb_t *pdb, struct cil_levelrange *cil_lvlrange, mls_range_t *mls_range)
{
int rc = SEPOL_ERR;
struct cil_level *low = cil_lvlrange->low;
struct cil_level *high = cil_lvlrange->high;
mls_level_t *mls_level = NULL;
mls_level = &mls_range->level[0];
rc = cil_level_to_mls_level(pdb, low, mls_level);
if (rc != SEPOL_OK) {
goto exit;
}
mls_level = &mls_range->level[1];
rc = cil_level_to_mls_level(pdb, high, mls_level);
if (rc != SEPOL_OK) {
goto exit;
}
return SEPOL_OK;
exit:
return rc;
}
int cil_userlevel_userrange_to_policydb(policydb_t *pdb, struct cil_user *cil_user)
{
int rc = SEPOL_ERR;
struct cil_level *cil_level = cil_user->dftlevel;
struct cil_levelrange *cil_levelrange = cil_user->range;
user_datum_t *sepol_user = NULL;
rc = __cil_get_sepol_user_datum(pdb, DATUM(cil_user), &sepol_user);
if (rc != SEPOL_OK) goto exit;
rc = cil_level_to_mls_level(pdb, cil_level, &sepol_user->exp_dfltlevel);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_levelrange_to_mls_range(pdb, cil_levelrange, &sepol_user->exp_range);
if (rc != SEPOL_OK) {
goto exit;
}
return SEPOL_OK;
exit:
return rc;
}
int __cil_context_to_sepol_context(policydb_t *pdb, struct cil_context *cil_context, context_struct_t *sepol_context)
{
int rc = SEPOL_ERR;
struct cil_levelrange *cil_lvlrange = cil_context->range;
user_datum_t *sepol_user = NULL;
role_datum_t *sepol_role = NULL;
type_datum_t *sepol_type = NULL;
rc = __cil_get_sepol_user_datum(pdb, DATUM(cil_context->user), &sepol_user);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_role_datum(pdb, DATUM(cil_context->role), &sepol_role);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_type_datum(pdb, DATUM(cil_context->type), &sepol_type);
if (rc != SEPOL_OK) goto exit;
sepol_context->user = sepol_user->s.value;
sepol_context->role = sepol_role->s.value;
sepol_context->type = sepol_type->s.value;
if (pdb->mls == CIL_TRUE) {
mls_context_init(sepol_context);
rc = __cil_levelrange_to_mls_range(pdb, cil_lvlrange, &sepol_context->range);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR,"Problem with MLS\n");
mls_context_destroy(sepol_context);
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_sidorder_to_policydb(policydb_t *pdb, const struct cil_db *db)
{
int rc = SEPOL_ERR;
struct cil_list_item *curr;
unsigned count = 0;
ocontext_t *tail = NULL;
if (db->sidorder == NULL || db->sidorder->head == NULL) {
cil_log(CIL_WARN, "No sidorder statement in policy\n");
return SEPOL_OK;
}
cil_list_for_each(curr, db->sidorder) {
struct cil_sid *cil_sid = (struct cil_sid*)curr->data;
struct cil_context *cil_context = cil_sid->context;
if (cil_context != NULL) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_ISID], &tail);
count++;
new_ocon->sid[0] = count;
new_ocon->u.name = cil_strdup(cil_sid->datum.fqn);
rc = __cil_context_to_sepol_context(pdb, cil_context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR,"Problem with context for SID %s\n",cil_sid->datum.fqn);
goto exit;
}
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_rangetransition_to_policydb(policydb_t *pdb, const struct cil_db *db, struct cil_rangetransition *rangetrans, hashtab_t range_trans_table)
{
int rc = SEPOL_ERR;
type_datum_t *sepol_src = NULL;
type_datum_t *sepol_tgt = NULL;
class_datum_t *sepol_class = NULL;
struct cil_list *class_list;
range_trans_t *newkey = NULL;
struct mls_range *newdatum = NULL;
ebitmap_t src_bitmap, tgt_bitmap;
ebitmap_node_t *node1, *node2;
unsigned int i, j;
struct cil_list_item *c;
struct mls_range *o_range = NULL;
rc = __cil_expand_type(rangetrans->src, &src_bitmap);
if (rc != SEPOL_OK) goto exit;
rc = __cil_expand_type(rangetrans->exec, &tgt_bitmap);
if (rc != SEPOL_OK) goto exit;
class_list = cil_expand_class(rangetrans->obj);
ebitmap_for_each_bit(&src_bitmap, node1, i) {
if (!ebitmap_get_bit(&src_bitmap, i)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[i]), &sepol_src);
if (rc != SEPOL_OK) goto exit;
ebitmap_for_each_bit(&tgt_bitmap, node2, j) {
if (!ebitmap_get_bit(&tgt_bitmap, j)) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(db->val_to_type[j]), &sepol_tgt);
if (rc != SEPOL_OK) goto exit;
cil_list_for_each(c, class_list) {
int add = CIL_TRUE;
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_class);
if (rc != SEPOL_OK) goto exit;
newkey = cil_calloc(1, sizeof(*newkey));
newdatum = cil_calloc(1, sizeof(*newdatum));
newkey->source_type = sepol_src->s.value;
newkey->target_type = sepol_tgt->s.value;
newkey->target_class = sepol_class->s.value;
rc = __cil_levelrange_to_mls_range(pdb, rangetrans->range, newdatum);
if (rc != SEPOL_OK) {
free(newkey);
free(newdatum);
goto exit;
}
rc = hashtab_insert(range_trans_table, (hashtab_key_t)newkey, newdatum);
if (rc != SEPOL_OK) {
if (rc == SEPOL_EEXIST) {
add = CIL_FALSE;
o_range = hashtab_search(range_trans_table, (hashtab_key_t)newkey);
if (!mls_range_eq(newdatum, o_range)) {
cil_log(CIL_ERR, "Conflicting Range transition rules\n");
} else {
rc = SEPOL_OK;
}
} else {
cil_log(CIL_ERR, "Out of memory\n");
}
}
if (add == CIL_TRUE) {
rc = hashtab_insert(pdb->range_tr,
(hashtab_key_t)newkey,
newdatum);
if (rc != SEPOL_OK) {
mls_range_destroy(newdatum);
free(newdatum);
free(newkey);
cil_log(CIL_ERR, "Out of memory\n");
goto exit;
}
} else {
mls_range_destroy(newdatum);
free(newdatum);
free(newkey);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
}
}
rc = SEPOL_OK;
exit:
ebitmap_destroy(&src_bitmap);
ebitmap_destroy(&tgt_bitmap);
cil_list_destroy(&class_list, CIL_FALSE);
return rc;
}
int cil_ibpkeycon_to_policydb(policydb_t *pdb, struct cil_sort *ibpkeycons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
struct in6_addr subnet_prefix;
for (i = 0; i < ibpkeycons->count; i++) {
struct cil_ibpkeycon *cil_ibpkeycon = ibpkeycons->array[i];
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_IBPKEY], &tail);
rc = inet_pton(AF_INET6, cil_ibpkeycon->subnet_prefix_str, &subnet_prefix);
if (rc != 1) {
cil_log(CIL_ERR, "ibpkeycon subnet prefix not in valid IPV6 format\n");
rc = SEPOL_ERR;
goto exit;
}
memcpy(&new_ocon->u.ibpkey.subnet_prefix, &subnet_prefix.s6_addr[0],
sizeof(new_ocon->u.ibpkey.subnet_prefix));
new_ocon->u.ibpkey.low_pkey = cil_ibpkeycon->pkey_low;
new_ocon->u.ibpkey.high_pkey = cil_ibpkeycon->pkey_high;
rc = __cil_context_to_sepol_context(pdb, cil_ibpkeycon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK)
goto exit;
}
return SEPOL_OK;
exit:
return rc;
}
int cil_portcon_to_policydb(policydb_t *pdb, struct cil_sort *portcons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < portcons->count; i++) {
struct cil_portcon *cil_portcon = portcons->array[i];
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_PORT], &tail);
switch (cil_portcon->proto) {
case CIL_PROTOCOL_UDP:
new_ocon->u.port.protocol = IPPROTO_UDP;
break;
case CIL_PROTOCOL_TCP:
new_ocon->u.port.protocol = IPPROTO_TCP;
break;
case CIL_PROTOCOL_DCCP:
new_ocon->u.port.protocol = IPPROTO_DCCP;
break;
case CIL_PROTOCOL_SCTP:
new_ocon->u.port.protocol = IPPROTO_SCTP;
break;
default:
/* should not get here */
rc = SEPOL_ERR;
goto exit;
}
new_ocon->u.port.low_port = cil_portcon->port_low;
new_ocon->u.port.high_port = cil_portcon->port_high;
rc = __cil_context_to_sepol_context(pdb, cil_portcon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_netifcon_to_policydb(policydb_t *pdb, struct cil_sort *netifcons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < netifcons->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_NETIF], &tail);
struct cil_netifcon *cil_netifcon = netifcons->array[i];
new_ocon->u.name = cil_strdup(cil_netifcon->interface_str);
rc = __cil_context_to_sepol_context(pdb, cil_netifcon->if_context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_context_to_sepol_context(pdb, cil_netifcon->packet_context, &new_ocon->context[1]);
if (rc != SEPOL_OK) {
context_destroy(&new_ocon->context[0]);
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_ibendportcon_to_policydb(policydb_t *pdb, struct cil_sort *ibendportcons)
{
int rc = SEPOL_ERR;
uint32_t i;
ocontext_t *tail = NULL;
for (i = 0; i < ibendportcons->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_IBENDPORT], &tail);
struct cil_ibendportcon *cil_ibendportcon = ibendportcons->array[i];
new_ocon->u.ibendport.dev_name = cil_strdup(cil_ibendportcon->dev_name_str);
new_ocon->u.ibendport.port = cil_ibendportcon->port;
rc = __cil_context_to_sepol_context(pdb, cil_ibendportcon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK)
goto exit;
}
return SEPOL_OK;
exit:
return rc;
}
int cil_nodecon_to_policydb(policydb_t *pdb, struct cil_sort *nodecons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
ocontext_t *tail6 = NULL;
for (i = 0; i < nodecons->count; i++) {
ocontext_t *new_ocon = NULL;
struct cil_nodecon *cil_nodecon = nodecons->array[i];
if (cil_nodecon->addr->family == AF_INET) {
new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_NODE], &tail);
new_ocon->u.node.addr = cil_nodecon->addr->ip.v4.s_addr;
new_ocon->u.node.mask = cil_nodecon->mask->ip.v4.s_addr;
} else if (cil_nodecon->addr->family == AF_INET6) {
new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_NODE6], &tail6);
memcpy(new_ocon->u.node6.addr, &cil_nodecon->addr->ip.v6.s6_addr[0], 16);
memcpy(new_ocon->u.node6.mask, &cil_nodecon->mask->ip.v6.s6_addr[0], 16);
} else {
/* should not get here */
rc = SEPOL_ERR;
goto exit;
}
rc = __cil_context_to_sepol_context(pdb, cil_nodecon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_fsuse_to_policydb(policydb_t *pdb, struct cil_sort *fsuses)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < fsuses->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_FSUSE], &tail);
struct cil_fsuse *cil_fsuse = fsuses->array[i];
new_ocon->u.name = cil_strdup(cil_fsuse->fs_str);
new_ocon->v.behavior = cil_fsuse->type;
rc = __cil_context_to_sepol_context(pdb, cil_fsuse->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_genfscon_to_policydb(policydb_t *pdb, struct cil_sort *genfscons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
genfs_t *genfs_tail = NULL;
ocontext_t *ocon_tail = NULL;
for (i = 0; i < genfscons->count; i++) {
struct cil_genfscon *cil_genfscon = genfscons->array[i];
ocontext_t *new_ocon = cil_malloc(sizeof(ocontext_t));
memset(new_ocon, 0, sizeof(ocontext_t));
if (genfs_tail && strcmp(genfs_tail->fstype, cil_genfscon->fs_str) == 0) {
ocon_tail->next = new_ocon;
} else {
genfs_t *new_genfs = cil_malloc(sizeof(genfs_t));
memset(new_genfs, 0, sizeof(genfs_t));
new_genfs->fstype = cil_strdup(cil_genfscon->fs_str);
new_genfs->head = new_ocon;
if (genfs_tail) {
genfs_tail->next = new_genfs;
} else {
pdb->genfs = new_genfs;
}
genfs_tail = new_genfs;
}
ocon_tail = new_ocon;
new_ocon->u.name = cil_strdup(cil_genfscon->path_str);
rc = __cil_context_to_sepol_context(pdb, cil_genfscon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_pirqcon_to_policydb(policydb_t *pdb, struct cil_sort *pirqcons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < pirqcons->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_XEN_PIRQ], &tail);
struct cil_pirqcon *cil_pirqcon = pirqcons->array[i];
new_ocon->u.pirq = cil_pirqcon->pirq;
rc = __cil_context_to_sepol_context(pdb, cil_pirqcon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_iomemcon_to_policydb(policydb_t *pdb, struct cil_sort *iomemcons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < iomemcons->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_XEN_IOMEM], &tail);
struct cil_iomemcon *cil_iomemcon = iomemcons->array[i];
new_ocon->u.iomem.low_iomem = cil_iomemcon->iomem_low;
new_ocon->u.iomem.high_iomem = cil_iomemcon->iomem_high;
rc = __cil_context_to_sepol_context(pdb, cil_iomemcon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_ioportcon_to_policydb(policydb_t *pdb, struct cil_sort *ioportcons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < ioportcons->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_XEN_IOPORT], &tail);
struct cil_ioportcon *cil_ioportcon = ioportcons->array[i];
new_ocon->u.ioport.low_ioport = cil_ioportcon->ioport_low;
new_ocon->u.ioport.high_ioport = cil_ioportcon->ioport_high;
rc = __cil_context_to_sepol_context(pdb, cil_ioportcon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_pcidevicecon_to_policydb(policydb_t *pdb, struct cil_sort *pcidevicecons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < pcidevicecons->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_XEN_PCIDEVICE], &tail);
struct cil_pcidevicecon *cil_pcidevicecon = pcidevicecons->array[i];
new_ocon->u.device = cil_pcidevicecon->dev;
rc = __cil_context_to_sepol_context(pdb, cil_pcidevicecon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_devicetreecon_to_policydb(policydb_t *pdb, struct cil_sort *devicetreecons)
{
int rc = SEPOL_ERR;
uint32_t i = 0;
ocontext_t *tail = NULL;
for (i = 0; i < devicetreecons->count; i++) {
ocontext_t *new_ocon = cil_add_ocontext(&pdb->ocontexts[OCON_XEN_DEVICETREE], &tail);
struct cil_devicetreecon *cil_devicetreecon = devicetreecons->array[i];
new_ocon->u.name = cil_strdup(cil_devicetreecon->path);
rc = __cil_context_to_sepol_context(pdb, cil_devicetreecon->context, &new_ocon->context[0]);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int cil_default_to_policydb(policydb_t *pdb, struct cil_default *def)
{
struct cil_list_item *curr;
class_datum_t *sepol_class;
struct cil_list *class_list;
cil_list_for_each(curr, def->class_datums) {
struct cil_list_item *c;
class_list = cil_expand_class(curr->data);
cil_list_for_each(c, class_list) {
int rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_class);
if (rc != SEPOL_OK) goto exit;
switch (def->flavor) {
case CIL_DEFAULTUSER:
if (!sepol_class->default_user) {
sepol_class->default_user = def->object;
} else if (sepol_class->default_user != (char)def->object) {
cil_log(CIL_ERR,"User default labeling for class %s already specified\n",DATUM(c->data)->fqn);
goto exit;
}
break;
case CIL_DEFAULTROLE:
if (!sepol_class->default_role) {
sepol_class->default_role = def->object;
} else if (sepol_class->default_role != (char)def->object) {
cil_log(CIL_ERR,"Role default labeling for class %s already specified\n",DATUM(c->data)->fqn);
goto exit;
}
break;
case CIL_DEFAULTTYPE:
if (!sepol_class->default_type) {
sepol_class->default_type = def->object;
} else if (sepol_class->default_type != (char)def->object) {
cil_log(CIL_ERR,"Type default labeling for class %s already specified\n",DATUM(c->data)->fqn);
goto exit;
}
break;
default:
goto exit;
}
}
cil_list_destroy(&class_list, CIL_FALSE);
}
return SEPOL_OK;
exit:
cil_list_destroy(&class_list, CIL_FALSE);
return SEPOL_ERR;
}
int cil_defaultrange_to_policydb(policydb_t *pdb, struct cil_defaultrange *def)
{
struct cil_list_item *curr;
class_datum_t *sepol_class;
struct cil_list *class_list;
cil_list_for_each(curr, def->class_datums) {
struct cil_list_item *c;
class_list = cil_expand_class(curr->data);
cil_list_for_each(c, class_list) {
int rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_class);
if (rc != SEPOL_OK) goto exit;
if (!sepol_class->default_range) {
sepol_class->default_range = def->object_range;
} else if (sepol_class->default_range != (char)def->object_range) {
cil_log(CIL_ERR,"Range default labeling for class %s already specified\n", DATUM(curr->data)->fqn);
goto exit;
}
}
cil_list_destroy(&class_list, CIL_FALSE);
}
return SEPOL_OK;
exit:
cil_list_destroy(&class_list, CIL_FALSE);
return SEPOL_ERR;
}
int __cil_node_to_policydb(struct cil_tree_node *node, void *extra_args)
{
int rc = SEPOL_OK;
int pass;
struct cil_args_binary *args = extra_args;
const struct cil_db *db;
policydb_t *pdb;
hashtab_t filename_trans_table;
hashtab_t range_trans_table;
hashtab_t role_trans_table;
void **type_value_to_cil;
db = args->db;
pdb = args->pdb;
pass = args->pass;
filename_trans_table = args->filename_trans_table;
range_trans_table = args->range_trans_table;
role_trans_table = args->role_trans_table;
type_value_to_cil = args->type_value_to_cil;
if (node->flavor >= CIL_MIN_DECLARATIVE) {
if (node != DATUM(node->data)->nodes->head->data) {
goto exit;
}
}
switch (pass) {
case 1:
switch (node->flavor) {
case CIL_ROLE:
rc = cil_role_to_policydb(pdb, node->data);
break;
case CIL_TYPE:
rc = cil_type_to_policydb(pdb, node->data, type_value_to_cil);
break;
case CIL_TYPEATTRIBUTE:
rc = cil_typeattribute_to_policydb(pdb, node->data, type_value_to_cil);
break;
case CIL_POLICYCAP:
rc = cil_policycap_to_policydb(pdb, node->data);
break;
case CIL_USER:
rc = cil_user_to_policydb(pdb, node->data);
break;
case CIL_BOOL:
rc = cil_bool_to_policydb(pdb, node->data);
break;
case CIL_CATALIAS:
if (pdb->mls == CIL_TRUE) {
rc = cil_catalias_to_policydb(pdb, node->data);
}
break;
case CIL_SENS:
if (pdb->mls == CIL_TRUE) {
rc = cil_sepol_level_define(pdb, node->data);
}
break;
default:
break;
}
break;
case 2:
switch (node->flavor) {
case CIL_TYPE:
rc = cil_type_bounds_to_policydb(pdb, node->data);
break;
case CIL_TYPEALIAS:
rc = cil_typealias_to_policydb(pdb, node->data);
break;
case CIL_TYPEPERMISSIVE:
rc = cil_typepermissive_to_policydb(pdb, node->data);
break;
case CIL_TYPEATTRIBUTE:
rc = cil_typeattribute_to_bitmap(pdb, db, node->data);
break;
case CIL_SENSALIAS:
if (pdb->mls == CIL_TRUE) {
rc = cil_sensalias_to_policydb(pdb, node->data);
}
break;
case CIL_ROLE:
rc = cil_role_bounds_to_policydb(pdb, node->data);
if (rc != SEPOL_OK) goto exit;
rc = cil_roletype_to_policydb(pdb, db, node->data);
break;
case CIL_USER:
rc = cil_user_bounds_to_policydb(pdb, node->data);
if (rc != SEPOL_OK) goto exit;
if (pdb->mls == CIL_TRUE) {
rc = cil_userlevel_userrange_to_policydb(pdb, node->data);
if (rc != SEPOL_OK) {
goto exit;
}
}
rc = cil_userrole_to_policydb(pdb, db, node->data);
break;
case CIL_TYPE_RULE:
rc = cil_type_rule_to_policydb(pdb, db, node->data);
break;
case CIL_AVRULE:
case CIL_AVRULEX: {
struct cil_avrule *rule = node->data;
if (db->disable_neverallow != CIL_TRUE && rule->rule_kind == CIL_AVRULE_NEVERALLOW) {
struct cil_list *neverallows = args->neverallows;
cil_list_prepend(neverallows, CIL_LIST_ITEM, node);
}
break;
}
case CIL_ROLETRANSITION:
rc = cil_roletrans_to_policydb(pdb, db, node->data, role_trans_table);
break;
case CIL_ROLEATTRIBUTESET:
/*rc = cil_roleattributeset_to_policydb(pdb, node->data);*/
break;
case CIL_NAMETYPETRANSITION:
rc = cil_typetransition_to_policydb(pdb, db, node->data, filename_trans_table);
break;
case CIL_CONSTRAIN:
rc = cil_constrain_to_policydb(pdb, db, node->data);
break;
case CIL_MLSCONSTRAIN:
if (pdb->mls == CIL_TRUE) {
rc = cil_constrain_to_policydb(pdb, db, node->data);
}
break;
case CIL_VALIDATETRANS:
rc = cil_validatetrans_to_policydb(pdb, db, node->data);
break;
case CIL_MLSVALIDATETRANS:
if (pdb->mls == CIL_TRUE) {
rc = cil_validatetrans_to_policydb(pdb, db, node->data);
}
break;
case CIL_RANGETRANSITION:
if (pdb->mls == CIL_TRUE) {
rc = cil_rangetransition_to_policydb(pdb, db, node->data, range_trans_table);
}
break;
case CIL_DEFAULTUSER:
case CIL_DEFAULTROLE:
case CIL_DEFAULTTYPE:
rc = cil_default_to_policydb(pdb, node->data);
break;
case CIL_DEFAULTRANGE:
rc = cil_defaultrange_to_policydb(pdb, node->data);
break;
default:
break;
}
break;
case 3:
switch (node->flavor) {
case CIL_BOOLEANIF:
rc = cil_booleanif_to_policydb(pdb, db, node, filename_trans_table);
break;
case CIL_AVRULE: {
struct cil_avrule *rule = node->data;
if (rule->rule_kind != CIL_AVRULE_NEVERALLOW) {
rc = cil_avrule_to_policydb(pdb, db, node->data);
}
}
break;
case CIL_AVRULEX: {
struct cil_avrule *rule = node->data;
if (rule->rule_kind != CIL_AVRULE_NEVERALLOW) {
rc = cil_avrulex_to_hashtable(pdb, db, node->data, args);
}
}
break;
case CIL_ROLEALLOW:
rc = cil_roleallow_to_policydb(pdb, db, node->data);
break;
default:
break;
}
default:
break;
}
exit:
if (rc != SEPOL_OK) {
cil_tree_log(node, CIL_ERR, "Binary policy creation failed");
}
return rc;
}
int __cil_binary_create_helper(struct cil_tree_node *node, uint32_t *finished, void *extra_args)
{
int rc = SEPOL_ERR;
if (node->flavor == CIL_BLOCK) {
struct cil_block *blk = node->data;
if (blk->is_abstract == CIL_TRUE) {
*finished = CIL_TREE_SKIP_HEAD;
rc = SEPOL_OK;
goto exit;
}
} else if (node->flavor == CIL_MACRO) {
*finished = CIL_TREE_SKIP_HEAD;
rc = SEPOL_OK;
goto exit;
} else if (node->flavor == CIL_BOOLEANIF) {
*finished = CIL_TREE_SKIP_HEAD;
}
rc = __cil_node_to_policydb(node, extra_args);
if (rc != SEPOL_OK) {
goto exit;
}
exit:
return rc;
}
int __cil_contexts_to_policydb(policydb_t *pdb, const struct cil_db *db)
{
int rc = SEPOL_ERR;
rc = cil_portcon_to_policydb(pdb, db->portcon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_netifcon_to_policydb(pdb, db->netifcon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_nodecon_to_policydb(pdb, db->nodecon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_fsuse_to_policydb(pdb, db->fsuse);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_genfscon_to_policydb(pdb, db->genfscon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_ibpkeycon_to_policydb(pdb, db->ibpkeycon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_ibendportcon_to_policydb(pdb, db->ibendportcon);
if (rc != SEPOL_OK) {
goto exit;
}
if (db->target_platform == SEPOL_TARGET_XEN) {
rc = cil_pirqcon_to_policydb(pdb, db->pirqcon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_iomemcon_to_policydb(pdb, db->iomemcon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_ioportcon_to_policydb(pdb, db->ioportcon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_pcidevicecon_to_policydb(pdb, db->pcidevicecon);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_devicetreecon_to_policydb(pdb, db->devicetreecon);
if (rc != SEPOL_OK) {
goto exit;
}
}
return SEPOL_OK;
exit:
return rc;
}
int __cil_common_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
common_datum_t *common = (common_datum_t *)datum;
if (common->s.value < 1 || common->s.value > pdb->p_commons.nprim) {
return -EINVAL;
}
pdb->p_common_val_to_name[common->s.value - 1] = (char *)key;
return 0;
}
int __cil_class_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
class_datum_t *class = (class_datum_t *)datum;
if (class->s.value < 1 || class->s.value > pdb->p_classes.nprim) {
return -EINVAL;
}
pdb->p_class_val_to_name[class->s.value - 1] = (char *)key;
pdb->class_val_to_struct[class->s.value - 1] = class;
return 0;
}
int __cil_role_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
role_datum_t *role = (role_datum_t *)datum;
if (role->s.value < 1 || role->s.value > pdb->p_roles.nprim) {
return -EINVAL;
}
pdb->p_role_val_to_name[role->s.value - 1] = (char *)key;
pdb->role_val_to_struct[role->s.value - 1] = role;
return 0;
}
int __cil_type_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
type_datum_t *type = (type_datum_t *)datum;
if (type->s.value < 1 || type->s.value > pdb->p_types.nprim) {
return -EINVAL;
}
pdb->p_type_val_to_name[type->s.value - 1] = (char *)key;
pdb->type_val_to_struct[type->s.value - 1] = type;
return 0;
}
int __cil_user_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
user_datum_t *user = (user_datum_t *)datum;
if (user->s.value < 1 || user->s.value > pdb->p_users.nprim) {
return -EINVAL;
}
pdb->p_user_val_to_name[user->s.value - 1] = (char *)key;
pdb->user_val_to_struct[user->s.value - 1] = user;
return 0;
}
int __cil_bool_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
cond_bool_datum_t *bool = (cond_bool_datum_t *)datum;
if (bool->s.value < 1 || bool->s.value > pdb->p_bools.nprim) {
return -EINVAL;
}
pdb->p_bool_val_to_name[bool->s.value - 1] = (char *)key;
pdb->bool_val_to_struct[bool->s.value - 1] = bool;
return 0;
}
int __cil_level_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
level_datum_t *level = (level_datum_t *)datum;
if (level->level->sens < 1 || level->level->sens > pdb->p_levels.nprim) {
return -EINVAL;
}
pdb->p_sens_val_to_name[level->level->sens - 1] = (char *)key;
return 0;
}
int __cil_cat_val_array_insert(hashtab_key_t key, hashtab_datum_t datum, void *data)
{
policydb_t *pdb = data;
cat_datum_t *cat = (cat_datum_t *)datum;
if (cat->s.value < 1 || cat->s.value > pdb->p_cats.nprim) {
return -EINVAL;
}
pdb->p_cat_val_to_name[cat->s.value - 1] = (char *)key;
return 0;
}
int __cil_policydb_val_arrays_create(policydb_t *policydb)
{
int rc = SEPOL_ERR;
policydb->p_common_val_to_name = cil_malloc(sizeof(char *) * policydb->p_commons.nprim);
rc = hashtab_map(policydb->p_commons.table, &__cil_common_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
policydb->p_class_val_to_name = cil_malloc(sizeof(char *) * policydb->p_classes.nprim);
policydb->class_val_to_struct = cil_malloc(sizeof(class_datum_t *) * policydb->p_classes.nprim);
rc = hashtab_map(policydb->p_classes.table, &__cil_class_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
policydb->p_role_val_to_name = cil_malloc(sizeof(char *) * policydb->p_roles.nprim);
policydb->role_val_to_struct = cil_malloc(sizeof(role_datum_t *) * policydb->p_roles.nprim);
rc = hashtab_map(policydb->p_roles.table, &__cil_role_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
policydb->p_type_val_to_name = cil_malloc(sizeof(char *) * policydb->p_types.nprim);
policydb->type_val_to_struct = cil_malloc(sizeof(type_datum_t *) * policydb->p_types.nprim);
rc = hashtab_map(policydb->p_types.table, &__cil_type_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
policydb->p_user_val_to_name = cil_malloc(sizeof(char *) * policydb->p_users.nprim);
policydb->user_val_to_struct = cil_malloc(sizeof(user_datum_t *) * policydb->p_users.nprim);
rc = hashtab_map(policydb->p_users.table, &__cil_user_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
policydb->p_bool_val_to_name = cil_malloc(sizeof(char *) * policydb->p_bools.nprim);
policydb->bool_val_to_struct = cil_malloc(sizeof(cond_bool_datum_t *) * policydb->p_bools.nprim);
rc = hashtab_map(policydb->p_bools.table, &__cil_bool_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
policydb->p_sens_val_to_name = cil_malloc(sizeof(char *) * policydb->p_levels.nprim);
rc = hashtab_map(policydb->p_levels.table, &__cil_level_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
policydb->p_cat_val_to_name = cil_malloc(sizeof(char *) * policydb->p_cats.nprim);
rc = hashtab_map(policydb->p_cats.table, &__cil_cat_val_array_insert, policydb);
if (rc != SEPOL_OK) {
goto exit;
}
exit:
return rc;
}
static void __cil_set_conditional_state_and_flags(policydb_t *pdb)
{
cond_node_t *cur;
for (cur = pdb->cond_list; cur != NULL; cur = cur->next) {
int new_state;
cond_av_list_t *c;
new_state = cond_evaluate_expr(pdb, cur->expr);
cur->cur_state = new_state;
if (new_state == -1) {
cil_log(CIL_WARN, "Expression result was undefined - disabling all rules\n");
}
for (c = cur->true_list; c != NULL; c = c->next) {
if (new_state <= 0) {
c->node->key.specified &= ~AVTAB_ENABLED;
} else {
c->node->key.specified |= AVTAB_ENABLED;
}
}
for (c = cur->false_list; c != NULL; c = c->next) {
if (new_state) { /* -1 or 1 */
c->node->key.specified &= ~AVTAB_ENABLED;
} else {
c->node->key.specified |= AVTAB_ENABLED;
}
}
}
}
int __cil_policydb_create(const struct cil_db *db, struct sepol_policydb **spdb)
{
int rc;
struct policydb *pdb = NULL;
rc = sepol_policydb_create(spdb);
if (rc < 0) {
cil_log(CIL_ERR, "Failed to create policy db\n");
// spdb could be a dangling pointer at this point, so reset it so
// callers of this function don't need to worry about freeing garbage
*spdb = NULL;
goto exit;
}
pdb = &(*spdb)->p;
pdb->policy_type = POLICY_KERN;
pdb->target_platform = db->target_platform;
pdb->policyvers = db->policy_version;
pdb->handle_unknown = db->handle_unknown;
pdb->mls = db->mls;
return SEPOL_OK;
exit:
return rc;
}
int __cil_policydb_init(policydb_t *pdb, const struct cil_db *db, struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[])
{
int rc = SEPOL_ERR;
// these flags should get set in __cil_policydb_create. However, for
// backwards compatability, it is possible that __cil_policydb_create is
// never called. So, they must also be set here.
pdb->handle_unknown = db->handle_unknown;
pdb->mls = db->mls;
rc = cil_classorder_to_policydb(pdb, db, class_value_to_cil, perm_value_to_cil);
if (rc != SEPOL_OK) {
goto exit;
}
if (pdb->mls == CIL_TRUE) {
rc = cil_catorder_to_policydb(pdb, db);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_sensitivityorder_to_policydb(pdb, db);
if (rc != SEPOL_OK) {
goto exit;
}
}
rc = avtab_alloc(&pdb->te_avtab, MAX_AVTAB_SIZE);
if (rc != SEPOL_OK) {
goto exit;
}
rc = avtab_alloc(&pdb->te_cond_avtab, MAX_AVTAB_SIZE);
if (rc != SEPOL_OK) {
goto exit;
}
return SEPOL_OK;
exit:
return rc;
}
static unsigned int filename_trans_hash(hashtab_t h, const_hashtab_key_t key)
{
const filename_trans_t *k = (const filename_trans_t *)key;
return ((k->tclass + (k->ttype << 2) +
(k->stype << 9)) & (h->size - 1));
}
static int filename_trans_compare(hashtab_t h
__attribute__ ((unused)), const_hashtab_key_t key1,
const_hashtab_key_t key2)
{
const filename_trans_t *a = (const filename_trans_t *)key1;
const filename_trans_t *b = (const filename_trans_t *)key2;
return a->stype != b->stype || a->ttype != b->ttype || a->tclass != b->tclass || strcmp(a->name, b->name);
}
static unsigned int range_trans_hash(hashtab_t h, const_hashtab_key_t key)
{
const range_trans_t *k = (const range_trans_t *)key;
return ((k->target_class + (k->target_type << 2) +
(k->source_type << 5)) & (h->size - 1));
}
static int range_trans_compare(hashtab_t h
__attribute__ ((unused)), const_hashtab_key_t key1,
const_hashtab_key_t key2)
{
const range_trans_t *a = (const range_trans_t *)key1;
const range_trans_t *b = (const range_trans_t *)key2;
return a->source_type != b->source_type || a->target_type != b->target_type || a->target_class != b->target_class;
}
static unsigned int role_trans_hash(hashtab_t h, const_hashtab_key_t key)
{
const role_trans_t *k = (const role_trans_t *)key;
return ((k->role + (k->type << 2) +
(k->tclass << 5)) & (h->size - 1));
}
static int role_trans_compare(hashtab_t h
__attribute__ ((unused)), const_hashtab_key_t key1,
const_hashtab_key_t key2)
{
const role_trans_t *a = (const role_trans_t *)key1;
const role_trans_t *b = (const role_trans_t *)key2;
return a->role != b->role || a->type != b->type || a->tclass != b->tclass;
}
/* Based on MurmurHash3, written by Austin Appleby and placed in the
* public domain.
*/
static unsigned int avrulex_hash(__attribute__((unused)) hashtab_t h, const_hashtab_key_t key)
{
const avtab_key_t *k = (const avtab_key_t *)key;
static const uint32_t c1 = 0xcc9e2d51;
static const uint32_t c2 = 0x1b873593;
static const uint32_t r1 = 15;
static const uint32_t r2 = 13;
static const uint32_t m = 5;
static const uint32_t n = 0xe6546b64;
uint32_t hash = 0;
#define mix(input) { \
uint32_t v = input; \
v *= c1; \
v = (v << r1) | (v >> (32 - r1)); \
v *= c2; \
hash ^= v; \
hash = (hash << r2) | (hash >> (32 - r2)); \
hash = hash * m + n; \
}
mix(k->target_class);
mix(k->target_type);
mix(k->source_type);
mix(k->specified);
#undef mix
hash ^= hash >> 16;
hash *= 0x85ebca6b;
hash ^= hash >> 13;
hash *= 0xc2b2ae35;
hash ^= hash >> 16;
return hash & (AVRULEX_TABLE_SIZE - 1);
}
static int avrulex_compare(hashtab_t h
__attribute__ ((unused)), const_hashtab_key_t key1,
const_hashtab_key_t key2)
{
const avtab_key_t *a = (const avtab_key_t *)key1;
const avtab_key_t *b = (const avtab_key_t *)key2;
return a->source_type != b->source_type || a->target_type != b->target_type || a->target_class != b->target_class || a->specified != b->specified;
}
int cil_binary_create(const struct cil_db *db, sepol_policydb_t **policydb)
{
int rc = SEPOL_ERR;
struct sepol_policydb *pdb = NULL;
rc = __cil_policydb_create(db, &pdb);
if (rc != SEPOL_OK) {
goto exit;
}
rc = cil_binary_create_allocated_pdb(db, pdb);
if (rc != SEPOL_OK) {
goto exit;
}
*policydb = pdb;
return SEPOL_OK;
exit:
sepol_policydb_free(pdb);
return rc;
}
static void __cil_destroy_sepol_class_perms(class_perm_node_t *curr)
{
class_perm_node_t *next;
while (curr) {
next = curr->next;
free(curr);
curr = next;
}
}
static int __cil_rule_to_sepol_class_perms(policydb_t *pdb, struct cil_list *classperms, class_perm_node_t **sepol_class_perms)
{
int rc = SEPOL_ERR;
struct cil_list_item *i;
cil_list_for_each(i, classperms) {
if (i->flavor == CIL_CLASSPERMS) {
struct cil_classperms *cp = i->data;
if (FLAVOR(cp->class) == CIL_CLASS) {
class_perm_node_t *cpn = NULL;
class_datum_t *sepol_class = NULL;
uint32_t data = 0;
rc = __cil_get_sepol_class_datum(pdb, DATUM(cp->class), &sepol_class);
if (rc != SEPOL_OK) goto exit;
rc = __cil_perms_to_datum(cp->perms, sepol_class, &data);
if (rc != SEPOL_OK) goto exit;
if (data == 0) {
/* No permissions */
return SEPOL_OK;
}
cpn = cil_malloc(sizeof(class_perm_node_t));
cpn->tclass = sepol_class->s.value;
cpn->data = data;
cpn->next = *sepol_class_perms;
*sepol_class_perms = cpn;
} else { /* MAP */
struct cil_list_item *j = NULL;
cil_list_for_each(j, cp->perms) {
struct cil_perm *cmp = j->data;
rc = __cil_rule_to_sepol_class_perms(pdb, cmp->classperms, sepol_class_perms);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
} else { /* SET */
struct cil_classperms_set *cp_set = i->data;
struct cil_classpermission *cp = cp_set->set;
rc = __cil_rule_to_sepol_class_perms(pdb, cp->classperms, sepol_class_perms);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
return SEPOL_OK;
exit:
return rc;
}
static int __cil_permx_to_sepol_class_perms(policydb_t *pdb, struct cil_permissionx *permx, class_perm_node_t **sepol_class_perms)
{
int rc = SEPOL_OK;
struct cil_list *class_list = NULL;
struct cil_list_item *c;
class_datum_t *sepol_obj = NULL;
class_perm_node_t *cpn;
uint32_t data = 0;
char *perm_str = NULL;
class_list = cil_expand_class(permx->obj);
cil_list_for_each(c, class_list) {
rc = __cil_get_sepol_class_datum(pdb, DATUM(c->data), &sepol_obj);
if (rc != SEPOL_OK) {
goto exit;
}
switch (permx->kind) {
case CIL_PERMX_KIND_IOCTL:
perm_str = CIL_KEY_IOCTL;
break;
default:
rc = SEPOL_ERR;
goto exit;
}
rc = __perm_str_to_datum(perm_str, sepol_obj, &data);
if (rc != SEPOL_OK) {
goto exit;
}
cpn = cil_malloc(sizeof(*cpn));
cpn->tclass = sepol_obj->s.value;
cpn->data = data;
cpn->next = *sepol_class_perms;
*sepol_class_perms = cpn;
}
exit:
cil_list_destroy(&class_list, CIL_FALSE);
return rc;
}
static void __cil_init_sepol_type_set(type_set_t *t)
{
ebitmap_init(&t->types);
ebitmap_init(&t->negset);
t->flags = 0;
}
static int __cil_add_sepol_type(policydb_t *pdb, const struct cil_db *db, struct cil_symtab_datum *datum, ebitmap_t *map)
{
int rc = SEPOL_ERR;
struct cil_tree_node *n = datum->nodes->head->data;
type_datum_t *sepol_datum = NULL;
if (n->flavor == CIL_TYPEATTRIBUTE) {
ebitmap_node_t *tnode;
unsigned int i;
struct cil_typeattribute *attr = (struct cil_typeattribute *)datum;
ebitmap_for_each_bit(attr->types, tnode, i) {
if (!ebitmap_get_bit(attr->types, i)) continue;
datum = DATUM(db->val_to_type[i]);
rc = __cil_get_sepol_type_datum(pdb, datum, &sepol_datum);
if (rc != SEPOL_OK) goto exit;
ebitmap_set_bit(map, sepol_datum->s.value - 1, 1);
}
} else {
rc = __cil_get_sepol_type_datum(pdb, datum, &sepol_datum);
if (rc != SEPOL_OK) goto exit;
ebitmap_set_bit(map, sepol_datum->s.value - 1, 1);
}
return SEPOL_OK;
exit:
return rc;
}
static avrule_t *__cil_init_sepol_avrule(uint32_t kind, struct cil_tree_node *node)
{
avrule_t *avrule;
struct cil_tree_node *source_node;
char *source_path;
int is_cil;
avrule = cil_malloc(sizeof(avrule_t));
avrule->specified = kind;
avrule->flags = 0;
__cil_init_sepol_type_set(&avrule->stypes);
__cil_init_sepol_type_set(&avrule->ttypes);
avrule->perms = NULL;
avrule->line = node->line;
avrule->source_filename = NULL;
avrule->source_line = node->line;
source_node = cil_tree_get_next_path(node, &source_path, &is_cil);
if (source_node) {
avrule->source_filename = source_path;
if (!is_cil) {
avrule->source_line = node->hll_line;
}
}
avrule->next = NULL;
return avrule;
}
static void __cil_destroy_sepol_avrules(avrule_t *curr)
{
avrule_t *next;
while (curr) {
next = curr->next;
ebitmap_destroy(&curr->stypes.types);
ebitmap_destroy(&curr->stypes.negset);
ebitmap_destroy(&curr->ttypes.types);
ebitmap_destroy(&curr->ttypes.negset);
__cil_destroy_sepol_class_perms(curr->perms);
free(curr);
curr = next;
}
}
static void __cil_print_parents(const char *pad, struct cil_tree_node *n)
{
if (!n) return;
__cil_print_parents(pad, n->parent);
if (n->flavor != CIL_SRC_INFO) {
cil_tree_log(n, CIL_ERR,"%s%s", pad, cil_node_to_string(n));
}
}
static void __cil_print_classperm(struct cil_list *cp_list)
{
struct cil_list_item *i1, *i2;
i1 = cp_list->head;
if (i1->flavor == CIL_CLASSPERMS) {
struct cil_classperms *cp = i1->data;
cil_log(CIL_ERR,"(%s (", DATUM(cp->class)->fqn);
cil_list_for_each(i2, cp->perms) {
cil_log(CIL_ERR,"%s",DATUM(i2->data)->fqn);
if (i2 != cp->perms->tail) {
cil_log(CIL_ERR," ");
} else {
cil_log(CIL_ERR,"))");
}
}
} else {
struct cil_classperms_set *cp_set = i1->data;
cil_log(CIL_ERR,"%s", DATUM(cp_set->set)->fqn);
}
}
static void __cil_print_permissionx(struct cil_permissionx *px)
{
const char *kind_str = "";
char *expr_str;
switch (px->kind) {
case CIL_PERMX_KIND_IOCTL:
kind_str = CIL_KEY_IOCTL;
break;
default:
kind_str = "unknown";
break;
}
__cil_expr_to_string(px->expr_str, CIL_PERMISSIONX, &expr_str);
cil_log(CIL_ERR, "%s %s (%s)", kind_str, DATUM(px->obj)->fqn, expr_str);
free(expr_str);
}
static void __cil_print_rule(const char *pad, const char *kind, struct cil_avrule *avrule)
{
cil_log(CIL_ERR,"%s(%s ", pad, kind);
cil_log(CIL_ERR,"%s %s ", DATUM(avrule->src)->fqn, DATUM(avrule->tgt)->fqn);
if (!avrule->is_extended) {
__cil_print_classperm(avrule->perms.classperms);
} else {
cil_log(CIL_ERR, "(");
__cil_print_permissionx(avrule->perms.x.permx);
cil_log(CIL_ERR, ")");
}
cil_log(CIL_ERR,")\n");
}
static int __cil_print_neverallow_failure(const struct cil_db *db, struct cil_tree_node *node)
{
int rc;
struct cil_list_item *i2;
struct cil_list *matching;
struct cil_avrule *cil_rule = node->data;
struct cil_avrule target;
struct cil_tree_node *n2;
struct cil_avrule *r2;
char *neverallow_str;
char *allow_str;
enum cil_flavor avrule_flavor;
target.rule_kind = CIL_AVRULE_ALLOWED;
target.is_extended = cil_rule->is_extended;
target.src = cil_rule->src;
target.tgt = cil_rule->tgt;
target.perms = cil_rule->perms;
if (!cil_rule->is_extended) {
neverallow_str = CIL_KEY_NEVERALLOW;
allow_str = CIL_KEY_ALLOW;
avrule_flavor = CIL_AVRULE;
} else {
neverallow_str = CIL_KEY_NEVERALLOWX;
allow_str = CIL_KEY_ALLOWX;
avrule_flavor = CIL_AVRULEX;
}
cil_tree_log(node, CIL_ERR, "%s check failed", neverallow_str);
__cil_print_rule(" ", neverallow_str, cil_rule);
cil_list_init(&matching, CIL_NODE);
rc = cil_find_matching_avrule_in_ast(db->ast->root, avrule_flavor, &target, matching, CIL_FALSE);
if (rc) {
cil_log(CIL_ERR, "Error occurred while checking %s rules\n", neverallow_str);
cil_list_destroy(&matching, CIL_FALSE);
goto exit;
}
cil_list_for_each(i2, matching) {
n2 = i2->data;
r2 = n2->data;
__cil_print_parents(" ", n2);
__cil_print_rule(" ", allow_str, r2);
}
cil_log(CIL_ERR,"\n");
cil_list_destroy(&matching, CIL_FALSE);
exit:
return rc;
}
static int cil_check_neverallow(const struct cil_db *db, policydb_t *pdb, struct cil_tree_node *node, int *violation)
{
int rc = SEPOL_OK;
struct cil_avrule *cil_rule = node->data;
struct cil_symtab_datum *tgt = cil_rule->tgt;
uint32_t kind;
avrule_t *rule;
struct cil_list *xperms = NULL;
struct cil_list_item *item;
if (!cil_rule->is_extended) {
kind = AVRULE_NEVERALLOW;
} else {
kind = AVRULE_XPERMS_NEVERALLOW;
}
rule = __cil_init_sepol_avrule(kind, node);
rule->next = NULL;
rc = __cil_add_sepol_type(pdb, db, cil_rule->src, &rule->stypes.types);
if (rc != SEPOL_OK) {
goto exit;
}
if (tgt->fqn == CIL_KEY_SELF) {
rule->flags = RULE_SELF;
} else {
rc = __cil_add_sepol_type(pdb, db, cil_rule->tgt, &rule->ttypes.types);
if (rc != SEPOL_OK) {
goto exit;
}
}
if (!cil_rule->is_extended) {
rc = __cil_rule_to_sepol_class_perms(pdb, cil_rule->perms.classperms, &rule->perms);
if (rc != SEPOL_OK) {
goto exit;
}
rc = check_assertion(pdb, rule);
if (rc == CIL_TRUE) {
*violation = CIL_TRUE;
rc = __cil_print_neverallow_failure(db, node);
if (rc != SEPOL_OK) {
goto exit;
}
}
} else {
rc = __cil_permx_to_sepol_class_perms(pdb, cil_rule->perms.x.permx, &rule->perms);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_permx_bitmap_to_sepol_xperms_list(cil_rule->perms.x.permx->perms, &xperms);
if (rc != SEPOL_OK) {
goto exit;
}
cil_list_for_each(item, xperms) {
rule->xperms = item->data;
rc = check_assertion(pdb, rule);
if (rc == CIL_TRUE) {
*violation = CIL_TRUE;
rc = __cil_print_neverallow_failure(db, node);
if (rc != SEPOL_OK) {
goto exit;
}
}
}
}
exit:
if (xperms != NULL) {
cil_list_for_each(item, xperms) {
free(item->data);
item->data = NULL;
}
cil_list_destroy(&xperms, CIL_FALSE);
}
rule->xperms = NULL;
__cil_destroy_sepol_avrules(rule);
return rc;
}
static int cil_check_neverallows(const struct cil_db *db, policydb_t *pdb, struct cil_list *neverallows, int *violation)
{
int rc = SEPOL_OK;
struct cil_list_item *item;
cil_list_for_each(item, neverallows) {
rc = cil_check_neverallow(db, pdb, item->data, violation);
if (rc != SEPOL_OK) {
goto exit;
}
}
exit:
return rc;
}
static struct cil_list *cil_classperms_from_sepol(policydb_t *pdb, uint16_t class, uint32_t data, struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[])
{
struct cil_classperms *cp;
struct cil_list *cp_list;
class_datum_t *sepol_class = pdb->class_val_to_struct[class - 1];
unsigned i;
cil_classperms_init(&cp);
cp->class = class_value_to_cil[class];
if (!cp->class) goto exit;
cil_list_init(&cp->perms, CIL_PERM);
for (i = 0; i < sepol_class->permissions.nprim; i++) {
struct cil_perm *perm;
if ((data & (1 << i)) == 0) continue;
perm = perm_value_to_cil[class][i+1];
if (!perm) goto exit;
cil_list_append(cp->perms, CIL_PERM, perm);
}
cil_list_init(&cp_list, CIL_CLASSPERMS);
cil_list_append(cp_list, CIL_CLASSPERMS, cp);
return cp_list;
exit:
cil_destroy_classperms(cp);
cil_log(CIL_ERR,"Failed to create CIL class-permissions from sepol values\n");
return NULL;
}
static int cil_avrule_from_sepol(policydb_t *pdb, avtab_ptr_t sepol_rule, struct cil_avrule *cil_rule, void *type_value_to_cil[], struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[])
{
int rc = SEPOL_ERR;
avtab_key_t *k = &sepol_rule->key;
avtab_datum_t *d = &sepol_rule->datum;
cil_rule->src = type_value_to_cil[k->source_type];
if (!cil_rule->src) goto exit;
cil_rule->tgt = type_value_to_cil[k->target_type];
if (!cil_rule->tgt) goto exit;
cil_rule->perms.classperms = cil_classperms_from_sepol(pdb, k->target_class, d->data, class_value_to_cil, perm_value_to_cil);
if (!cil_rule->perms.classperms) goto exit;
return SEPOL_OK;
exit:
cil_log(CIL_ERR,"Failed to create CIL AV rule from sepol values\n");
return rc;
}
static int cil_check_type_bounds(const struct cil_db *db, policydb_t *pdb, void *type_value_to_cil, struct cil_class *class_value_to_cil[], struct cil_perm **perm_value_to_cil[], int *violation)
{
int rc = SEPOL_OK;
int i;
for (i = 0; i < db->num_types; i++) {
type_datum_t *child;
type_datum_t *parent;
avtab_ptr_t bad = NULL;
int numbad = 0;
struct cil_type *t = db->val_to_type[i];
if (!t->bounds) continue;
rc = __cil_get_sepol_type_datum(pdb, DATUM(t), &child);
if (rc != SEPOL_OK) goto exit;
rc = __cil_get_sepol_type_datum(pdb, DATUM(t->bounds), &parent);
if (rc != SEPOL_OK) goto exit;
rc = bounds_check_type(NULL, pdb, child->s.value, parent->s.value, &bad, &numbad);
if (rc != SEPOL_OK) goto exit;
if (bad) {
avtab_ptr_t cur;
struct cil_avrule target;
struct cil_tree_node *n1 = NULL;
*violation = CIL_TRUE;
target.is_extended = 0;
target.rule_kind = CIL_AVRULE_ALLOWED;
target.src_str = NULL;
target.tgt_str = NULL;
cil_log(CIL_ERR, "Child type %s exceeds bounds of parent %s\n",
t->datum.fqn, t->bounds->datum.fqn);
for (cur = bad; cur; cur = cur->next) {
struct cil_list_item *i2;
struct cil_list *matching;
rc = cil_avrule_from_sepol(pdb, cur, &target, type_value_to_cil, class_value_to_cil, perm_value_to_cil);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR, "Failed to convert sepol avrule to CIL\n");
goto exit;
}
__cil_print_rule(" ", "allow", &target);
cil_list_init(&matching, CIL_NODE);
rc = cil_find_matching_avrule_in_ast(db->ast->root, CIL_AVRULE, &target, matching, CIL_TRUE);
if (rc) {
cil_log(CIL_ERR, "Error occurred while checking type bounds\n");
cil_list_destroy(&matching, CIL_FALSE);
cil_list_destroy(&target.perms.classperms, CIL_TRUE);
bounds_destroy_bad(bad);
goto exit;
}
cil_list_for_each(i2, matching) {
struct cil_tree_node *n2 = i2->data;
struct cil_avrule *r2 = n2->data;
if (n1 == n2) {
cil_log(CIL_ERR, " <See previous>\n");
} else {
n1 = n2;
__cil_print_parents(" ", n2);
__cil_print_rule(" ", "allow", r2);
}
}
cil_list_destroy(&matching, CIL_FALSE);
cil_list_destroy(&target.perms.classperms, CIL_TRUE);
}
bounds_destroy_bad(bad);
}
}
exit:
return rc;
}
// assumes policydb is already allocated and initialized properly with things
// like policy type set to kernel and version set appropriately
int cil_binary_create_allocated_pdb(const struct cil_db *db, sepol_policydb_t *policydb)
{
int rc = SEPOL_ERR;
int i;
struct cil_args_binary extra_args;
policydb_t *pdb = &policydb->p;
struct cil_list *neverallows = NULL;
hashtab_t filename_trans_table = NULL;
hashtab_t range_trans_table = NULL;
hashtab_t role_trans_table = NULL;
hashtab_t avrulex_ioctl_table = NULL;
void **type_value_to_cil = NULL;
struct cil_class **class_value_to_cil = NULL;
struct cil_perm ***perm_value_to_cil = NULL;
if (db == NULL || policydb == NULL) {
if (db == NULL) {
cil_log(CIL_ERR,"db == NULL\n");
} else if (policydb == NULL) {
cil_log(CIL_ERR,"policydb == NULL\n");
}
return SEPOL_ERR;
}
/* libsepol values start at 1. Just allocate extra memory rather than
* subtract 1 from the sepol value.
*/
type_value_to_cil = calloc(db->num_types_and_attrs+1, sizeof(*type_value_to_cil));
if (!type_value_to_cil) goto exit;
class_value_to_cil = calloc(db->num_classes+1, sizeof(*class_value_to_cil));
if (!class_value_to_cil) goto exit;
perm_value_to_cil = calloc(db->num_classes+1, sizeof(*perm_value_to_cil));
if (!perm_value_to_cil) goto exit;
for (i=1; i < db->num_classes+1; i++) {
perm_value_to_cil[i] = calloc(PERMS_PER_CLASS+1, sizeof(*perm_value_to_cil[i]));
if (!perm_value_to_cil[i]) goto exit;
}
rc = __cil_policydb_init(pdb, db, class_value_to_cil, perm_value_to_cil);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR,"Problem in policydb_init\n");
goto exit;
}
filename_trans_table = hashtab_create(filename_trans_hash, filename_trans_compare, FILENAME_TRANS_TABLE_SIZE);
if (!filename_trans_table) {
cil_log(CIL_INFO, "Failure to create hashtab for filename_trans\n");
goto exit;
}
range_trans_table = hashtab_create(range_trans_hash, range_trans_compare, RANGE_TRANS_TABLE_SIZE);
if (!range_trans_table) {
cil_log(CIL_INFO, "Failure to create hashtab for range_trans\n");
goto exit;
}
role_trans_table = hashtab_create(role_trans_hash, role_trans_compare, ROLE_TRANS_TABLE_SIZE);
if (!role_trans_table) {
cil_log(CIL_INFO, "Failure to create hashtab for role_trans\n");
goto exit;
}
avrulex_ioctl_table = hashtab_create(avrulex_hash, avrulex_compare, AVRULEX_TABLE_SIZE);
if (!avrulex_ioctl_table) {
cil_log(CIL_INFO, "Failure to create hashtab for avrulex\n");
goto exit;
}
cil_list_init(&neverallows, CIL_LIST_ITEM);
extra_args.db = db;
extra_args.pdb = pdb;
extra_args.neverallows = neverallows;
extra_args.filename_trans_table = filename_trans_table;
extra_args.range_trans_table = range_trans_table;
extra_args.role_trans_table = role_trans_table;
extra_args.avrulex_ioctl_table = avrulex_ioctl_table;
extra_args.type_value_to_cil = type_value_to_cil;
for (i = 1; i <= 3; i++) {
extra_args.pass = i;
rc = cil_tree_walk(db->ast->root, __cil_binary_create_helper, NULL, NULL, &extra_args);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failure while walking cil database\n");
goto exit;
}
if (i == 1) {
rc = __cil_policydb_val_arrays_create(pdb);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failure creating val_to_{struct,name} arrays\n");
goto exit;
}
}
if (i == 3) {
rc = hashtab_map(avrulex_ioctl_table, __cil_avrulex_ioctl_to_policydb, pdb);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failure creating avrulex rules\n");
goto exit;
}
}
}
rc = cil_sidorder_to_policydb(pdb, db);
if (rc != SEPOL_OK) {
goto exit;
}
rc = __cil_contexts_to_policydb(pdb, db);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failure while inserting cil contexts into sepol policydb\n");
goto exit;
}
if (pdb->type_attr_map == NULL) {
rc = __cil_typeattr_bitmap_init(pdb);
if (rc != SEPOL_OK) {
cil_log(CIL_INFO, "Failure while initializing typeattribute bitmap\n");
goto exit;
}
}
cond_optimize_lists(pdb->cond_list);
__cil_set_conditional_state_and_flags(pdb);
if (db->disable_neverallow != CIL_TRUE) {
int violation = CIL_FALSE;
cil_log(CIL_INFO, "Checking Neverallows\n");
rc = cil_check_neverallows(db, pdb, neverallows, &violation);
if (rc != SEPOL_OK) goto exit;
cil_log(CIL_INFO, "Checking User Bounds\n");
rc = bounds_check_users(NULL, pdb);
if (rc) {
violation = CIL_TRUE;
}
cil_log(CIL_INFO, "Checking Role Bounds\n");
rc = bounds_check_roles(NULL, pdb);
if (rc) {
violation = CIL_TRUE;
}
cil_log(CIL_INFO, "Checking Type Bounds\n");
rc = cil_check_type_bounds(db, pdb, type_value_to_cil, class_value_to_cil, perm_value_to_cil, &violation);
if (rc != SEPOL_OK) goto exit;
if (violation == CIL_TRUE) {
rc = SEPOL_ERR;
goto exit;
}
}
/* This pre-expands the roles and users for context validity checking */
if (hashtab_map(pdb->p_roles.table, policydb_role_cache, pdb)) {
cil_log(CIL_INFO, "Failure creating roles cache");
rc = SEPOL_ERR;
goto exit;
}
if (hashtab_map(pdb->p_users.table, policydb_user_cache, pdb)) {
cil_log(CIL_INFO, "Failure creating users cache");
rc = SEPOL_ERR;
goto exit;
}
rc = SEPOL_OK;
exit:
hashtab_destroy(filename_trans_table);
hashtab_destroy(range_trans_table);
hashtab_destroy(role_trans_table);
hashtab_destroy(avrulex_ioctl_table);
free(type_value_to_cil);
free(class_value_to_cil);
/* Range is because libsepol values start at 1. */
for (i=1; i < db->num_classes+1; i++) {
free(perm_value_to_cil[i]);
}
free(perm_value_to_cil);
cil_list_destroy(&neverallows, CIL_FALSE);
return rc;
}