/** Parse the string <b>s</b> to create a set of routerset entries, and add
* them to <b>target</b>. In log messages, refer to the string as
* <b>description</b>. Return 0 on success, -1 on failure.
*
* Three kinds of elements are allowed in routersets: nicknames, IP address
* patterns, and fingerprints. They may be surrounded by optional space, and
* must be separated by commas.
*/
int
routerset_parse(routerset_t *target, const char *s, const char *description)
{
int r = 0;
int added_countries = 0;
char *countryname;
smartlist_t *list = smartlist_new();
int malformed_list;
smartlist_split_string(list, s, ",",
SPLIT_SKIP_SPACE | SPLIT_IGNORE_BLANK, 0);
SMARTLIST_FOREACH_BEGIN(list, char *, nick) {
addr_policy_t *p;
/* if it doesn't pass our validation, assume it's malformed */
malformed_list = 1;
if (is_legal_hexdigest(nick)) {
char d[DIGEST_LEN];
if (*nick == '$')
++nick;
log_debug(LD_CONFIG, "Adding identity %s to %s", nick, description);
base16_decode(d, sizeof(d), nick, HEX_DIGEST_LEN);
digestmap_set(target->digests, d, (void*)1);
} else if (is_legal_nickname(nick)) {
log_debug(LD_CONFIG, "Adding nickname %s to %s", nick, description);
strmap_set_lc(target->names, nick, (void*)1);
} else if ((countryname = routerset_get_countryname(nick)) != NULL) {
log_debug(LD_CONFIG, "Adding country %s to %s", nick,
description);
smartlist_add(target->country_names, countryname);
added_countries = 1;
} else if ((strchr(nick,'.') || strchr(nick, ':') || strchr(nick, '*'))
&& (p = router_parse_addr_policy_item_from_string(
nick, ADDR_POLICY_REJECT,
&malformed_list))) {
/* IPv4 addresses contain '.', IPv6 addresses contain ':',
* and wildcard addresses contain '*'. */
log_debug(LD_CONFIG, "Adding address %s to %s", nick, description);
smartlist_add(target->policies, p);
} else if (malformed_list) {
log_warn(LD_CONFIG, "Entry '%s' in %s is malformed. Discarding entire"
" list.", nick, description);
r = -1;
tor_free(nick);
SMARTLIST_DEL_CURRENT(list, nick);
} else {
log_notice(LD_CONFIG, "Entry '%s' in %s is ignored. Using the"
" remainder of the list.", nick, description);
tor_free(nick);
SMARTLIST_DEL_CURRENT(list, nick);
}
} SMARTLIST_FOREACH_END(nick);
/* Using the given list of services, stage them into our global state. Every
* service version are handled. This function can remove entries in the given
* service_list.
*
* Staging a service means that we take all services in service_list and we
* put them in the staging list (global) which acts as a temporary list that
* is used by the service loading key process. In other words, staging a
* service puts it in a list to be considered when loading the keys and then
* moved to the main global list. */
static void
stage_services(smartlist_t *service_list)
{
tor_assert(service_list);
/* This is v2 specific. Trigger service pruning which will make sure the
* just configured services end up in the main global list. It should only
* be done in non validation mode because v2 subsystem handles service
* object differently. */
rend_service_prune_list();
/* Cleanup v2 service from the list, we don't need those object anymore
* because we validated them all against the others and we want to stage
* only >= v3 service. And remember, v2 has a different object type which is
* shadow copied from an hs_service_t type. */
SMARTLIST_FOREACH_BEGIN(service_list, hs_service_t *, s) {
if (s->config.version == HS_VERSION_TWO) {
SMARTLIST_DEL_CURRENT(service_list, s);
hs_service_free(s);
}
} SMARTLIST_FOREACH_END(s);
/* This is >= v3 specific. Using the newly configured service list, stage
* them into our global state. Every object ownership is lost after. */
hs_service_stage_services(service_list);
}
/** Remove every entry of the bridge list that was marked with
* mark_bridge_list if it has not subsequently been un-marked. */
void
sweep_bridge_list(void)
{
if (!bridge_list)
bridge_list = smartlist_new();
SMARTLIST_FOREACH_BEGIN(bridge_list, bridge_info_t *, b) {
if (b->marked_for_removal) {
SMARTLIST_DEL_CURRENT(bridge_list, b);
bridge_free(b);
}
} SMARTLIST_FOREACH_END(b);
}
/** Remove every entry of the transport list that was marked with
* mark_transport_list if it has not subsequently been un-marked. */
void
sweep_transport_list(void)
{
if (!transport_list)
transport_list = smartlist_new();
SMARTLIST_FOREACH_BEGIN(transport_list, transport_t *, t) {
if (t->marked_for_removal) {
SMARTLIST_DEL_CURRENT(transport_list, t);
transport_free(t);
}
} SMARTLIST_FOREACH_END(t);
}
/**
* Take a list of uint16_t *, and remove every port in the list from the
* current list of predicted ports.
*/
void
rep_hist_remove_predicted_ports(const smartlist_t *rmv_ports)
{
/* Let's do this on O(N), not O(N^2). */
bitarray_t *remove_ports = bitarray_init_zero(UINT16_MAX);
SMARTLIST_FOREACH(rmv_ports, const uint16_t *, p,
bitarray_set(remove_ports, *p));
SMARTLIST_FOREACH_BEGIN(predicted_ports_list, predicted_port_t *, pp) {
if (bitarray_is_set(remove_ports, pp->port)) {
tor_free(pp);
predicted_ports_total_alloc -= sizeof(*pp);
SMARTLIST_DEL_CURRENT(predicted_ports_list, pp);
}
} SMARTLIST_FOREACH_END(pp);
bitarray_free(remove_ports);
}
/** Parse the string <b>s</b> to create a set of routerset entries, and add
* them to <b>target</b>. In log messages, refer to the string as
* <b>description</b>. Return 0 on success, -1 on failure.
*
* Three kinds of elements are allowed in routersets: nicknames, IP address
* patterns, and fingerprints. They may be surrounded by optional space, and
* must be separated by commas.
*/
int
routerset_parse(routerset_t *target, const char *s, const char *description)
{
int r = 0;
int added_countries = 0;
char *countryname;
smartlist_t *list = smartlist_new();
smartlist_split_string(list, s, ",",
SPLIT_SKIP_SPACE | SPLIT_IGNORE_BLANK, 0);
SMARTLIST_FOREACH_BEGIN(list, char *, nick) {
addr_policy_t *p;
if (is_legal_hexdigest(nick)) {
char d[DIGEST_LEN];
if (*nick == '$')
++nick;
log_debug(LD_CONFIG, "Adding identity %s to %s", nick, description);
base16_decode(d, sizeof(d), nick, HEX_DIGEST_LEN);
digestmap_set(target->digests, d, (void*)1);
} else if (is_legal_nickname(nick)) {
log_debug(LD_CONFIG, "Adding nickname %s to %s", nick, description);
strmap_set_lc(target->names, nick, (void*)1);
} else if ((countryname = routerset_get_countryname(nick)) != NULL) {
log_debug(LD_CONFIG, "Adding country %s to %s", nick,
description);
smartlist_add(target->country_names, countryname);
added_countries = 1;
} else if ((strchr(nick,'.') || strchr(nick, '*')) &&
(p = router_parse_addr_policy_item_from_string(
nick, ADDR_POLICY_REJECT))) {
log_debug(LD_CONFIG, "Adding address %s to %s", nick, description);
smartlist_add(target->policies, p);
} else {
log_warn(LD_CONFIG, "Entry '%s' in %s is malformed.", nick,
description);
r = -1;
tor_free(nick);
SMARTLIST_DEL_CURRENT(list, nick);
}
} SMARTLIST_FOREACH_END(nick);
/** Return a newly allocated pointer to a list of uint16_t * for ports that
* are likely to be asked for in the near future.
*/
smartlist_t *
rep_hist_get_predicted_ports(time_t now)
{
int predicted_circs_relevance_time;
smartlist_t *out = smartlist_new();
tor_assert(predicted_ports_list);
predicted_circs_relevance_time = (int)prediction_timeout;
/* clean out obsolete entries */
SMARTLIST_FOREACH_BEGIN(predicted_ports_list, predicted_port_t *, pp) {
if (pp->time + predicted_circs_relevance_time < now) {
log_debug(LD_CIRC, "Expiring predicted port %d", pp->port);
predicted_ports_total_alloc -= sizeof(predicted_port_t);
tor_free(pp);
SMARTLIST_DEL_CURRENT(predicted_ports_list, pp);
} else {
smartlist_add(out, tor_memdup(&pp->port, sizeof(uint16_t)));
}
} SMARTLIST_FOREACH_END(pp);
return out;
}
