Tweak on patch to make authoritative directory servers cache

directories on disk.  Make authdirservers cache *their own*
directories instead of the ones they download.  This gives better
liveness, and marginally better resistance to broken authdirservers.

Authdirservers don't cache running-routers at all: r-r isn't stored to
disk, so there's no point right now.


svn:r2893

src/or/dirserv.c

@@ -807,6 +807,10 @@ static int dirserv_regenerate_directory(void)
   tor_free(new_directory);
   the_directory_is_dirty = 0;
 
+  /* Save the directory to disk so we re-load it quickly on startup.
+   */
+  dirserv_set_cached_directory(the_directory, time(NULL), 0);
+
   return 0;
 }
 
@@ -891,6 +895,11 @@ static int generate_runningrouters(crypto_pk_env_t *private_key)
     return -1;
   }
   runningrouters_is_dirty = 0;
+
+  /* We don't cache runnning-routers to disk, so there's no point in
+   * authdirservers caching it. */
+  /* dirserv_set_cached_directory(the_runningrouters, time(NULL), 1); */
+
   return 0;
  err:
   tor_free(s);

src/or/routerparse.c

@@ -389,7 +389,8 @@ router_parse_routerlist_from_directory(const char *str,
 
   /* Now that we know the signature is okay, and we have a
    * publication time, cache the directory. */
-  dirserv_set_cached_directory(str, published_on, 0);
+  if (!get_options()->AuthoritativeDir)
+    dirserv_set_cached_directory(str, published_on, 0);
 
   if (!(tok = find_first_by_keyword(tokens, K_RECOMMENDED_SOFTWARE))) {
     log_fn(LOG_WARN, "Missing recommended-software line from directory.");
@@ -515,7 +516,8 @@ router_parse_runningrouters(const char *str)
 
   /* Now that we know the signature is okay, and we have a
    * publication time, cache the list. */
-  dirserv_set_cached_directory(str, published_on, 1);
+  if (!get_options()->AuthoritativeDir)
+    dirserv_set_cached_directory(str, published_on, 1);
 
   if (!(tok = find_first_by_keyword(tokens, K_ROUTER_STATUS))) {
     if (!(tok = find_first_by_keyword(tokens, K_RUNNING_ROUTERS))) {