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Allow single DA if explicitly configured

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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>
This commit is contained in:
Gabriel L. Somlo 2018-05-14 11:47:22 -04:00
parent 2878dad9db
commit 97fad99483
1 changed files with 3 additions and 0 deletions
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src/or/routerlist.c
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@ -1806,6 +1806,9 @@ router_pick_dirserver_generic(smartlist_t *sourcelist,
const routerstatus_t *choice; const routerstatus_t *choice;
int busy = 0; int busy = 0;
if (smartlist_len(sourcelist) == 1)
flags |= PDS_ALLOW_SELF;
choice = router_pick_trusteddirserver_impl(sourcelist, type, flags, &busy); choice = router_pick_trusteddirserver_impl(sourcelist, type, flags, &busy);
if (choice || !(flags & PDS_RETRY_IF_NO_SERVERS)) if (choice || !(flags & PDS_RETRY_IF_NO_SERVERS))
return choice; return choice;