commit 97fad9948312417099fe3d8f5b17484be91ad3f9 Author: Gabriel L. Somlo gsomlo@gmail.com Date: Mon May 14 11:47:22 2018 -0400

Allow single DA if explicitly configured

When on a private network a single directory authority is explicitly configured, allow that DA's instace of tor to pick itself as its own DA, by having router_pick_dirserver_generic() set the PDS_ALLOW_SELF flag when the list of potential sources contains only one element. This would subsequently allow router_pick_trusteddirserver_impl() to calculate is 'requreother' condition as 'false', enabling it to pick itself as a valid DA candidate.

Fixes #25928

Signed-off-by: Gabriel Somlo gsomlo@gmail.com --- src/or/routerlist.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/src/or/routerlist.c b/src/or/routerlist.c index 76a236ff2..e8391724b 100644 --- a/src/or/routerlist.c +++ b/src/or/routerlist.c @@ -1806,6 +1806,9 @@ router_pick_dirserver_generic(smartlist_t *sourcelist, const routerstatus_t *choice; int busy = 0;

+ if (smartlist_len(sourcelist) == 1) + flags |= PDS_ALLOW_SELF; + choice = router_pick_trusteddirserver_impl(sourcelist, type, flags, &busy); if (choice || !(flags & PDS_RETRY_IF_NO_SERVERS)) return choice;