A Bridge Authority should compute flag thresholds

As a bridge authority, before we create our networkstatus document, we
should compute the thresholds needed for the various status flags
assigned to each bridge based on the status of all other bridges. We
then add these thresholds to the networkstatus document for easy access.
Fixes for #1117 and #9859.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/or/dirserv.c b/src/or/dirserv.c
index d30a474367..8d2da5b502 100644
--- a/src/or/dirserv.c
+++ b/src/or/dirserv.c
@@ -1957,6 +1957,10 @@ dirserv_compute_performance_thresholds(routerlist_t *rl,
 
   /* Now, fill in the arrays. */
   SMARTLIST_FOREACH_BEGIN(nodelist_get_list(), node_t *, node) {
+    if (options->BridgeAuthoritativeDir &&
+        node->ri &&
+        node->ri->purpose != ROUTER_PURPOSE_BRIDGE)
+      continue;
     if (router_counts_toward_thresholds(node, now, omit_as_sybil,
                                         require_mbw)) {
       routerinfo_t *ri = node->ri;
@@ -2071,6 +2075,21 @@ dirserv_compute_performance_thresholds(routerlist_t *rl,
   tor_free(wfus);
 }
 
+/* Use dirserv_compute_performance_thresholds() to compute the thresholds
+ * for the status flags, specifically for bridges.
+ *
+ * This is only called by a Bridge Authority from
+ * networkstatus_getinfo_by_purpose().
+ */
+void
+dirserv_compute_bridge_flag_thresholds(routerlist_t *rl)
+{
+
+  digestmap_t *omit_as_sybil = digestmap_new();
+  dirserv_compute_performance_thresholds(rl, omit_as_sybil);
+  digestmap_free(omit_as_sybil, NULL);
+}
+
 /** Measured bandwidth cache entry */
 typedef struct mbw_cache_entry_s {
   long mbw_kb;