diff options
Diffstat (limited to 'src/or/dirserv.c')
| -rw-r--r-- | src/or/dirserv.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/or/dirserv.c b/src/or/dirserv.c index 08d5318ed6..7d69aa21a4 100644 --- a/src/or/dirserv.c +++ b/src/or/dirserv.c @@ -1840,7 +1840,10 @@ get_possible_sybil_list(const smartlist_t *routers) smartlist_sort(routers_by_ip, _compare_routerinfo_by_ip_and_bw); omit_as_sybil = digestmap_new(); -#define MAX_WITH_SAME_ADDR 3 +/* Allow at most this number of Tor servers on a single IP address, ... */ +#define MAX_WITH_SAME_ADDR 2 +/* ... unless it's a directory authority, in which case allow more. */ +#define MAX_WITH_SAME_ADDR_ON_AUTHORITY 5 last_addr = 0; addr_count = 0; SMARTLIST_FOREACH(routers_by_ip, routerinfo_t *, ri, @@ -1849,7 +1852,9 @@ get_possible_sybil_list(const smartlist_t *routers) last_addr = ri->addr; addr_count = 1; } else if (++addr_count > MAX_WITH_SAME_ADDR) { - digestmap_set(omit_as_sybil, ri->cache_info.identity_digest, ri); + if (!router_digest_is_trusted_dir(ri->cache_info.identity_digest) || + addr_count > MAX_WITH_SAME_ADDR_ON_AUTHORITY) + digestmap_set(omit_as_sybil, ri->cache_info.identity_digest, ri); } }); |