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-rw-r--r--src/or/circuitbuild.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c
index d35c08e203..70e35967e6 100644
--- a/src/or/circuitbuild.c
+++ b/src/or/circuitbuild.c
@@ -3339,7 +3339,7 @@ extend_info_from_router(const routerinfo_t *r, int for_direct_connect)
}
/** Allocate and return a new extend_info that can be used to build a
- * ircuit to or through the node <b>node</b>. Use the primary address
+ * circuit to or through the node <b>node</b>. Use the primary address
* of the node unless <b>for_direct_connect</b> is true, in which case
* the preferred address is used instead. May return NULL if there is
* not enough info about <b>node</b> to extend to it--for example, if
@@ -5328,6 +5328,30 @@ entries_retry_all(const or_options_t *options)
entries_retry_helper(options, 1);
}
+/** Return true if one of our bridges is running a Tor version that can't
+ * provide microdescriptors to us. In that case fall back to asking for
+ * full descriptors. Eventually all bridges will support microdescriptors
+ * and we can take this check out; see bug 4013. */
+int
+any_bridges_dont_support_microdescriptors(void)
+{
+ const node_t *node;
+ if (!get_options()->UseBridges || !entry_guards)
+ return 0;
+ SMARTLIST_FOREACH_BEGIN(entry_guards, entry_guard_t *, e) {
+ node = node_get_by_id(e->identity);
+ if (node && node->ri &&
+ node_is_bridge(node) && node_is_a_configured_bridge(node) &&
+ !tor_version_supports_microdescriptors(node->ri->platform)) {
+ /* This is one of our current bridges, and we know enough about
+ * it to know that it won't be able to answer our microdescriptor
+ * questions. */
+ return 1;
+ }
+ } SMARTLIST_FOREACH_END(e);
+ return 0;
+}
+
/** Release all storage held by the list of entry guards and related
* memory structs. */
void