Fix crash when starting with LearnCircuitBuildTimeout 0.

Before we've set our options, we can neither call get_options() nor
networkstatus_get_latest_consensus().

Fixes bug 22252; bugfix on 4d9d2553baa6856b1d85ec26baa1ac3d2c24832a
in 0.2.9.3-alpha.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/or/circuitstats.c b/src/or/circuitstats.c
index 418acc0024..d4487cfcb7 100644
--- a/src/or/circuitstats.c
+++ b/src/or/circuitstats.c
@@ -107,11 +107,19 @@ get_circuit_build_timeout_ms(void)
 int
 circuit_build_times_disabled(void)
 {
+  return circuit_build_times_disabled_(get_options());
+}
+
+/** As circuit_build_times_disabled, but take options as an argument. */
+int
+circuit_build_times_disabled_(const or_options_t *options,
+                              int ignore_consensus)
+{
   if (unit_tests) {
     return 0;
   } else {
-    const or_options_t *options = get_options();
-    int consensus_disabled = networkstatus_get_param(NULL, "cbtdisabled",
+    int consensus_disabled =
+      ignore_consensus ? 0 : networkstatus_get_param(NULL, "cbtdisabled",
                                                      0, 0, 1);
     int config_disabled = !options->LearnCircuitBuildTimeout;
     int dirauth_disabled = options->AuthoritativeDir;