/** Remove all TRACKEXIT mappings from the addressmap for which the target
* host is unknown or no longer allowed, or for which the source address
* is no longer in trackexithosts. */
void
addressmap_clear_excluded_trackexithosts(const or_options_t *options)
{
const routerset_t *allow_nodes = options->ExitNodes;
const routerset_t *exclude_nodes = options->ExcludeExitNodesUnion_;
if (!addressmap)
return;
if (routerset_is_empty(allow_nodes))
allow_nodes = NULL;
if (allow_nodes == NULL && routerset_is_empty(exclude_nodes))
return;
STRMAP_FOREACH_MODIFY(addressmap, address, addressmap_entry_t *, ent) {
size_t len;
const char *target = ent->new_address, *dot;
char *nodename;
const node_t *node;
if (!target) {
/* DNS resolving in progress */
continue;
} else if (strcmpend(target, ".exit")) {
/* Not a .exit mapping */
continue;
} else if (ent->source != ADDRMAPSRC_TRACKEXIT) {
/* Not a trackexit mapping. */
continue;
}
len = strlen(target);
if (len < 6)
continue; /* malformed. */
dot = target + len - 6; /* dot now points to just before .exit */
while (dot > target && *dot != '.')
dot--;
if (*dot == '.') dot++;
nodename = tor_strndup(dot, len-5-(dot-target));;
node = node_get_by_nickname(nodename, 0);
tor_free(nodename);
if (!node ||
(allow_nodes && !routerset_contains_node(allow_nodes, node)) ||
routerset_contains_node(exclude_nodes, node) ||
!hostname_in_track_host_exits(options, address)) {
/* We don't know this one, or we want to be rid of it. */
addressmap_ent_remove(address, ent);
MAP_DEL_CURRENT(address);
}
} STRMAP_FOREACH_END;
static void
NS(test_main)(void *arg)
{
routerset_t *set = routerset_new();
int r;
(void)arg;
NS(mock_node).ri = NULL;
NS(mock_node).rs = NULL;
r = routerset_contains_node(set, &NS(mock_node));
tt_int_op(r, ==, 0);
done:
routerset_free(set);
}
static void
NS(test_main)(void *arg)
{
routerset_t *set = routerset_new();
int r;
const char *nickname = "foo";
routerinfo_t ri;
node_t mock_node;
(void)arg;
strmap_set_lc(set->names, nickname, (void *)1);
ri.nickname = (char *)nickname;
mock_node.ri = &ri;
mock_node.rs = NULL;
r = routerset_contains_node(set, &mock_node);
tt_int_op(r, ==, 4);
done:
routerset_free(set);
}
static void
NS(test_main)(void *arg)
{
routerset_t *set = routerset_new();
int r;
const char *nickname = "foo";
routerstatus_t rs;
(void)arg;
strmap_set_lc(set->names, nickname, (void *)1);
strncpy(rs.nickname, nickname, sizeof(rs.nickname) - 1);
rs.nickname[sizeof(rs.nickname) - 1] = '\0';
NS(mock_node).ri = NULL;
NS(mock_node).rs = &rs;
r = routerset_contains_node(set, &NS(mock_node));
tt_int_op(r, ==, 4);
done:
routerset_free(set);
}
