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#include <stdlib.h>
#include "debug.h"
#include <sepol/policydb/policydb.h>
#include "policydb_internal.h"
/* Policy file interfaces. */
int sepol_policy_file_create(sepol_policy_file_t ** pf)
{
*pf = calloc(1, sizeof(sepol_policy_file_t));
if (!(*pf))
return -1;
return 0;
}
void sepol_policy_file_set_mem(sepol_policy_file_t * spf,
char *data, size_t len)
{
struct policy_file *pf = &spf->pf;
if (!len) {
pf->type = PF_LEN;
return;
}
pf->type = PF_USE_MEMORY;
pf->data = data;
pf->len = len;
pf->size = len;
return;
}
void sepol_policy_file_set_fp(sepol_policy_file_t * spf, FILE * fp)
{
struct policy_file *pf = &spf->pf;
pf->type = PF_USE_STDIO;
pf->fp = fp;
return;
}
int sepol_policy_file_get_len(sepol_policy_file_t * spf, size_t * len)
{
struct policy_file *pf = &spf->pf;
if (pf->type != PF_LEN)
return -1;
*len = pf->len;
return 0;
}
void sepol_policy_file_set_handle(sepol_policy_file_t * pf,
sepol_handle_t * handle)
{
pf->pf.handle = handle;
}
void sepol_policy_file_free(sepol_policy_file_t * pf)
{
free(pf);
}
/* Policydb interfaces. */
int sepol_policydb_create(sepol_policydb_t ** sp)
{
policydb_t *p;
*sp = malloc(sizeof(sepol_policydb_t));
if (!(*sp))
return -1;
p = &(*sp)->p;
if (policydb_init(p)) {
free(*sp);
return -1;
}
return 0;
}
hidden_def(sepol_policydb_create)
void sepol_policydb_free(sepol_policydb_t * p)
{
if (!p)
return;
policydb_destroy(&p->p);
free(p);
}
hidden_def(sepol_policydb_free)
int sepol_policy_kern_vers_min(void)
{
return POLICYDB_VERSION_MIN;
}
int sepol_policy_kern_vers_max(void)
{
return POLICYDB_VERSION_MAX;
}
int sepol_policydb_set_typevers(sepol_policydb_t * sp, unsigned int type)
{
struct policydb *p = &sp->p;
switch (type) {
case POLICY_KERN:
p->policyvers = POLICYDB_VERSION_MAX;
break;
case POLICY_BASE:
case POLICY_MOD:
p->policyvers = MOD_POLICYDB_VERSION_MAX;
break;
default:
return -1;
}
p->policy_type = type;
return 0;
}
int sepol_policydb_set_vers(sepol_policydb_t * sp, unsigned int vers)
{
struct policydb *p = &sp->p;
switch (p->policy_type) {
case POLICY_KERN:
if (vers < POLICYDB_VERSION_MIN || vers > POLICYDB_VERSION_MAX)
return -1;
break;
case POLICY_BASE:
case POLICY_MOD:
if (vers < MOD_POLICYDB_VERSION_MIN
|| vers > MOD_POLICYDB_VERSION_MAX)
return -1;
break;
default:
return -1;
}
p->policyvers = vers;
return 0;
}
int sepol_policydb_set_handle_unknown(sepol_policydb_t * sp,
unsigned int handle_unknown)
{
struct policydb *p = &sp->p;
switch (handle_unknown) {
case SEPOL_DENY_UNKNOWN:
case SEPOL_REJECT_UNKNOWN:
case SEPOL_ALLOW_UNKNOWN:
break;
default:
return -1;
}
p->handle_unknown = handle_unknown;
return 0;
}
int sepol_policydb_read(sepol_policydb_t * p, sepol_policy_file_t * pf)
{
return policydb_read(&p->p, &pf->pf, 0);
}
int sepol_policydb_write(sepol_policydb_t * p, sepol_policy_file_t * pf)
{
return policydb_write(&p->p, &pf->pf);
}
int sepol_policydb_from_image(sepol_handle_t * handle,
void *data, size_t len, sepol_policydb_t * p)
{
return policydb_from_image(handle, data, len, &p->p);
}
int sepol_policydb_to_image(sepol_handle_t * handle,
sepol_policydb_t * p, void **newdata,
size_t * newlen)
{
return policydb_to_image(handle, &p->p, newdata, newlen);
}
int sepol_policydb_mls_enabled(const sepol_policydb_t * p)
{
return p->p.mls;
}
/*
* Enable compatibility mode for SELinux network checks iff
* the packet class is not defined in the policy.
*/
#define PACKET_CLASS_NAME "packet"
int sepol_policydb_compat_net(const sepol_policydb_t * p)
{
return (hashtab_search(p->p.p_classes.table, PACKET_CLASS_NAME) ==
NULL);
}
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