From f42f04c859a68dab45d021dd4197da816ec72b07 Mon Sep 17 00:00:00 2001
From: Roger Dingledine <arma@torproject.org>
Date: Wed, 30 Jun 2004 21:48:02 +0000
Subject: [PATCH] cleanups on 008pre1 items

svn:r1993
---
 src/or/directory.c  |  7 +++++++
 src/or/dirserv.c    |  6 +++---
 src/or/main.c       | 10 +++-------
 src/or/router.c     | 16 +++++++++-------
 src/or/routerlist.c | 21 ++++++++++++---------
 5 files changed, 34 insertions(+), 26 deletions(-)

diff --git a/src/or/directory.c b/src/or/directory.c
index 61c98df4c0..868f614ab5 100644
--- a/src/or/directory.c
+++ b/src/or/directory.c
@@ -80,6 +80,9 @@ void
 directory_get_from_dirserver(uint8_t purpose, const char *payload,
                              int payload_len)
 {
+  /* FFFF we might pass pick_directory_server a boolean to prefer
+   * picking myself for some purposes, or prefer picking not myself
+   * for other purposes. */
   directory_initiate_command(router_pick_directory_server(),
                              purpose, payload, payload_len);
 }
@@ -498,6 +501,10 @@ directory_handle_command_get(connection_t *conn, char *headers,
 
   if(!strcmp(url,"/running-routers")) { /* running-routers fetch */
     dlen = dirserv_get_runningrouters(&cp);
+    if(dlen < 0) { /* we failed to create cp */
+      connection_write_to_buf(answer503, strlen(answer503), conn);
+      return 0;
+    }
 
     snprintf(tmp, sizeof(tmp), "HTTP/1.0 200 OK\r\nContent-Length: %d\r\nContent-Type: text/plain\r\n\r\n",
              (int)dlen);
diff --git a/src/or/dirserv.c b/src/or/dirserv.c
index 8252ee077b..77b5f2a7a0 100644
--- a/src/or/dirserv.c
+++ b/src/or/dirserv.c
@@ -455,6 +455,7 @@ list_running_servers(char **nicknames_out)
       continue; /* only list successfully handshaked OR's. */
     if(!conn->nickname) /* it's an OP, don't list it */
       continue;
+    /* XXX008 need to change this to list "!nickname" for down routers */
     if (!router_nickname_is_approved(conn->nickname))
       continue; /* If we removed them from the approved list, don't list it.*/
     smartlist_add(nicknames, conn->nickname);
@@ -580,7 +581,7 @@ dirserv_dump_directory_to_string(char *s, unsigned int maxlen,
 /** Most recently generated encoded signed directory. */
 static char *the_directory = NULL;
 static int the_directory_len = -1;
-static char *cached_directory = NULL;
+static char *cached_directory = NULL; /* used only by non-auth dirservers */
 static time_t cached_directory_published = 0;
 static int cached_directory_len = -1;
 
@@ -588,8 +589,7 @@ void dirserv_set_cached_directory(const char *directory, time_t when)
 {
   time_t now;
   char filename[512];
-  if (!options.AuthoritativeDir)
-    return;
+  tor_assert(!options.AuthoritativeDir);
   now = time(NULL);
   if (when>cached_directory_published &&
       when<now+ROUTER_ALLOW_SKEW) {
diff --git a/src/or/main.c b/src/or/main.c
index 9aba9cffe7..ce0d6936cb 100644
--- a/src/or/main.c
+++ b/src/or/main.c
@@ -451,18 +451,14 @@ static void run_scheduled_events(time_t now) {
       router_rebuild_descriptor();
       router_upload_dir_desc_to_dirservers();
     }
-    if(!options.DirPort || !options.AuthoritativeDir) {
-      /* XXXX should directories do this next part too? */
-      routerlist_remove_old_routers(); /* purge obsolete entries */
-      directory_get_from_dirserver(DIR_PURPOSE_FETCH_DIR, NULL, 0);
-    } else {
+    routerlist_remove_old_routers(); /* purge obsolete entries */
+    if(options.AuthoritativeDir) {
       /* We're a directory; dump any old descriptors. */
       dirserv_remove_old_servers();
       /* dirservers try to reconnect too, in case connections have failed */
       router_retry_connections();
-      /* fetch another directory, in case it knows something we don't */
-      directory_get_from_dirserver(DIR_PURPOSE_FETCH_DIR, NULL, 0);
     }
+    directory_get_from_dirserver(DIR_PURPOSE_FETCH_DIR, NULL, 0);
     /* Force an upload of our descriptors every DirFetchPostPeriod seconds. */
     rend_services_upload(1);
     last_uploaded_services = now;
diff --git a/src/or/router.c b/src/or/router.c
index 26b8d89e1c..6f18d1f414 100644
--- a/src/or/router.c
+++ b/src/or/router.c
@@ -285,14 +285,16 @@ int init_keys(void) {
   if(!cp) {
     log_fn(LOG_INFO,"Cached directory %s not present. Ok.",keydir);
   } else {
-    if(options.AuthoritativeDir && dirserv_load_from_directory_string(cp) < 0){
-      log_fn(LOG_ERR, "Cached directory %s is corrupt", keydir);
-      tor_free(cp);
-      return -1;
+    if(options.AuthoritativeDir)
+      if(dirserv_load_from_directory_string(cp) < 0){
+        log_fn(LOG_ERR, "Cached directory %s is corrupt", keydir);
+        tor_free(cp);
+        return -1;
+      }
+    } else {
+      /* set time to 1 so it will be replaced on first download. */
+      dirserv_set_cached_directory(cp, 1);
     }
-    /* set time to 1 so it will be replaced on first download.
-     */
-    dirserv_set_cached_directory(cp, 1);
     tor_free(cp);
   }
   /* success */
diff --git a/src/or/routerlist.c b/src/or/routerlist.c
index 566ddb74f0..68ab10a178 100644
--- a/src/or/routerlist.c
+++ b/src/or/routerlist.c
@@ -477,11 +477,13 @@ int router_load_routerlist_from_directory(const char *s,
     log_fn(LOG_WARN, "Error resolving routerlist");
     return -1;
   }
-  /* Remember the directory, if we're nonauthoritative.*/
-  dirserv_set_cached_directory(s, routerlist->published_on);
-  /* Learn about the descriptors in the directory, if we're authoritative */
-  if (options.AuthoritativeDir)
+  if (options.AuthoritativeDir) {
+    /* Learn about the descriptors in the directory. */
     dirserv_load_from_directory_string(s);
+  } else {
+    /* Remember the directory. */
+    dirserv_set_cached_directory(s, routerlist->published_on);
+  }
   return 0;
 }
 
@@ -657,16 +659,17 @@ void routerlist_update_from_runningrouters(routerlist_t *list,
     router = smartlist_get(list->routers, i);
     for (j=0; j<n_names; ++j) {
       name = smartlist_get(rr->running_routers, j);
-      if (!strcmp(name, router->nickname)) {
-        running=1;
+      if (!strcasecmp(name, router->nickname)) {
+        router->is_running = 1;
+        break;
+      }
+      if (*name == '!' && strcasecmp(name+1, router->nickname)) {
+        router->is_running = 0;
         break;
       }
     }
-    router->is_running = 1; /* arma: is this correct? */
   }
   list->running_routers_updated_on = rr->published_on;
-  /* XXXX008 Should there also be a list of which are down, so that we
-   * don't mark merely unknown routers as down? */
 }
 
 /*