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prop224: Don't move intro points but rather descriptors

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Apart from the fact that a newly allocated service doesn't have descriptors
thus the move condition can never be true, the service needs the descriptor
signing key to cross-certify the authentication key of each intro point so we
need to move the descriptors between services and not only the intro points.

Fixes #23056

Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2017-07-28 11:47:32 -04:00 committed by George Kadianakis
parent f9cd870f50
commit a9fb97e91a
1 changed files with 12 additions and 25 deletions
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37
src/or/hs_service.c
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@ -709,34 +709,20 @@ close_service_circuits(hs_service_t *service)
close_service_rp_circuits(service);
}
/* Move introduction points from the src descriptor to the dst descriptor. The
* destination service intropoints are wiped out if any before moving. */
/* Move descriptor(s) from the src service to the dst service. */
static void
move_descriptor_intro_points(hs_service_descriptor_t *src,
hs_service_descriptor_t *dst)
move_descriptors(hs_service_t *src, hs_service_t *dst)
{
tor_assert(src);
tor_assert(dst);
digest256map_free(dst->intro_points.map, service_intro_point_free_);
dst->intro_points.map = src->intro_points.map;
/* Nullify the source. */
src->intro_points.map = NULL;
if (src->desc_current) {
dst->desc_current = src->desc_current;
src->desc_current = NULL;
}
/* Move introduction points from the src service to the dst service. The
* destination service intropoints are wiped out if any before moving. */
static void
move_intro_points(hs_service_t *src, hs_service_t *dst)
{
tor_assert(src);
tor_assert(dst);
if (src->desc_current && dst->desc_current) {
move_descriptor_intro_points(src->desc_current, dst->desc_current);
}
if (src->desc_next && dst->desc_next) {
move_descriptor_intro_points(src->desc_next, dst->desc_next);
if (src->desc_next) {
dst->desc_next = src->desc_next;
src->desc_next = NULL;
}
}
@ -812,13 +798,14 @@ register_all_services(void)
* transfer the intro points to it. */
s = find_service(hs_service_map, &snew->keys.identity_pk);
if (s) {
/* Pass ownership of intro points from s (the current service) to snew
* (the newly configured one). */
move_intro_points(s, snew);
/* Pass ownership of the descriptors from s (the current service) to
* snew (the newly configured one). */
move_descriptors(s, snew);
/* Remove the service from the global map because after this, we need to
* go over the remaining service in that map that aren't surviving the
* reload to close their circuits. */
remove_service(hs_service_map, s);
hs_service_free(s);
}
/* Great, this service is now ready to be added to our new map. */
if (BUG(register_service(new_service_map, snew) < 0)) {