void
npf_config_init(void)
{
npf_ruleset_t *rlset, *nset;
npf_rprocset_t *rpset;
npf_tableset_t *tset;
mutex_init(&npf_config_lock, MUTEX_DEFAULT, IPL_SOFTNET);
npf_config_psz = pserialize_create();
/* Load the empty configuration. */
tset = npf_tableset_create(0);
rpset = npf_rprocset_create();
rlset = npf_ruleset_create(0);
nset = npf_ruleset_create(0);
npf_config_load(rlset, tset, nset, rpset, NULL, true);
KASSERT(npf_config != NULL);
}
/*
* npfctl_load: store passed data i.e. update settings, create passed
* tables, rules and atomically activate all them.
*/
int
npfctl_load(u_long cmd, void *data)
{
struct plistref *pref = data;
prop_dictionary_t npf_dict, errdict;
prop_array_t alglist, natlist, tables, rprocs, rules, conlist;
npf_tableset_t *tblset = NULL;
npf_rprocset_t *rpset = NULL;
npf_ruleset_t *rlset = NULL;
npf_ruleset_t *nset = NULL;
npf_conndb_t *conndb = NULL;
uint32_t ver = 0;
size_t nitems;
bool flush;
int error;
/* Retrieve the dictionary. */
#ifndef _NPF_TESTING
error = prop_dictionary_copyin_ioctl(pref, cmd, &npf_dict);
if (error)
return error;
#else
npf_dict = (prop_dictionary_t)pref;
#endif
/* Dictionary for error reporting and version check. */
errdict = prop_dictionary_create();
prop_dictionary_get_uint32(npf_dict, "version", &ver);
if (ver != NPF_VERSION) {
error = EPROGMISMATCH;
goto fail;
}
/* ALGs. */
alglist = prop_dictionary_get(npf_dict, "algs");
error = npf_mk_algs(alglist, errdict);
if (error) {
goto fail;
}
/* NAT policies. */
natlist = prop_dictionary_get(npf_dict, "nat");
if ((nitems = prop_array_count(natlist)) > NPF_MAX_RULES) {
error = E2BIG;
goto fail;
}
nset = npf_ruleset_create(nitems);
error = npf_mk_natlist(nset, natlist, errdict);
if (error) {
goto fail;
}
/* Tables. */
tables = prop_dictionary_get(npf_dict, "tables");
if ((nitems = prop_array_count(tables)) > NPF_MAX_TABLES) {
error = E2BIG;
goto fail;
}
tblset = npf_tableset_create(nitems);
error = npf_mk_tables(tblset, tables, errdict);
if (error) {
goto fail;
}
/* Rule procedures. */
rprocs = prop_dictionary_get(npf_dict, "rprocs");
if ((nitems = prop_array_count(rprocs)) > NPF_MAX_RPROCS) {
error = E2BIG;
goto fail;
}
rpset = npf_rprocset_create();
error = npf_mk_rprocs(rpset, rprocs, errdict);
if (error) {
goto fail;
}
/* Rules. */
rules = prop_dictionary_get(npf_dict, "rules");
if ((nitems = prop_array_count(rules)) > NPF_MAX_RULES) {
error = E2BIG;
goto fail;
}
rlset = npf_ruleset_create(nitems);
error = npf_mk_rules(rlset, rules, rpset, errdict);
if (error) {
goto fail;
}
/* Connections (if loading any). */
if ((conlist = prop_dictionary_get(npf_dict, "conn-list")) != NULL) {
error = npf_mk_connlist(conlist, nset, &conndb, errdict);
if (error) {
goto fail;
}
}
flush = false;
prop_dictionary_get_bool(npf_dict, "flush", &flush);
/*
* Finally - perform the load.
*/
npf_config_load(rlset, tblset, nset, rpset, conndb, flush);
/* Done. Since data is consumed now, we shall not destroy it. */
tblset = NULL;
rpset = NULL;
rlset = NULL;
nset = NULL;
fail:
/*
* Note: destroy rulesets first, to drop references to the tableset.
*/
KASSERT(error == 0 || (nset || rpset || rlset || tblset));
if (nset) {
npf_ruleset_destroy(nset);
}
if (rlset) {
npf_ruleset_destroy(rlset);
}
if (rpset) {
npf_rprocset_destroy(rpset);
}
if (tblset) {
npf_tableset_destroy(tblset);
}
prop_object_release(npf_dict);
/* Error report. */
#ifndef _NPF_TESTING
prop_dictionary_set_int32(errdict, "errno", error);
prop_dictionary_copyout_ioctl(pref, cmd, errdict);
prop_object_release(errdict);
error = 0;
#endif
return error;
}