Merge remote-tracking branch 'asn-github/adaptive_padding-final'

3 files changed, 17 insertions, 2 deletions

diff --git a/src/app/config/config.c b/src/app/config/config.c
index 22070c346b..ecf4c21545 100644
--- a/src/app/config/config.c
+++ b/src/app/config/config.c
@@ -421,6 +421,10 @@ static config_var_t option_vars_[] = {
   V(ExcludeExitNodes,            ROUTERSET, NULL),
   OBSOLETE("ExcludeSingleHopRelays"),
   V(ExitNodes,                   ROUTERSET, NULL),
+  /* Researchers need a way to tell their clients to use specific
+   * middles that they also control, to allow safe live-network
+   * experimentation with new padding machines. */
+  V(MiddleNodes,                 ROUTERSET, NULL),
   V(ExitPolicy,                  LINELIST, NULL),
   V(ExitPolicyRejectPrivate,     BOOL,     "1"),
   V(ExitPolicyRejectLocalInterfaces, BOOL, "0"),
@@ -1693,6 +1697,7 @@ options_need_geoip_info(const or_options_t *options, const char **reason_out)
   int routerset_usage =
     routerset_needs_geoip(options->EntryNodes) ||
     routerset_needs_geoip(options->ExitNodes) ||
+    routerset_needs_geoip(options->MiddleNodes) ||
     routerset_needs_geoip(options->ExcludeExitNodes) ||
     routerset_needs_geoip(options->ExcludeNodes) ||
     routerset_needs_geoip(options->HSLayer2Nodes) ||
@@ -2132,6 +2137,7 @@ options_act(const or_options_t *old_options)
                          options->HSLayer2Nodes) ||
         !routerset_equal(old_options->HSLayer3Nodes,
                          options->HSLayer3Nodes) ||
+        !routerset_equal(old_options->MiddleNodes, options->MiddleNodes) ||
         options->StrictNodes != old_options->StrictNodes) {
       log_info(LD_CIRC,
                "Changed to using entry guards or bridges, or changed "
diff --git a/src/app/config/or_options_st.h b/src/app/config/or_options_st.h
index c2bc1079a5..63a17c9771 100644
--- a/src/app/config/or_options_st.h
+++ b/src/app/config/or_options_st.h
@@ -72,6 +72,9 @@ struct or_options_t {
   routerset_t *ExitNodes; /**< Structure containing nicknames, digests,
                            * country codes and IP address patterns of ORs to
                            * consider as exits. */
+  routerset_t *MiddleNodes; /**< Structure containing nicknames, digests,
+                             * country codes and IP address patterns of ORs to
+                             * consider as middles. */
   routerset_t *EntryNodes;/**< Structure containing nicknames, digests,
                            * country codes and IP address patterns of ORs to
                            * consider as entry points. */
diff --git a/src/app/main/main.c b/src/app/main/main.c
index d71e43ec30..ba2dfebd77 100644
--- a/src/app/main/main.c
+++ b/src/app/main/main.c
@@ -22,6 +22,7 @@
 #include "core/mainloop/netstatus.h"
 #include "core/or/channel.h"
 #include "core/or/channelpadding.h"
+#include "core/or/circuitpadding.h"
 #include "core/or/channeltls.h"
 #include "core/or/circuitlist.h"
 #include "core/or/circuitmux_ewma.h"
@@ -645,9 +646,13 @@ tor_init(int argc, char *argv[])
   /* The options are now initialised */
   const or_options_t *options = get_options();
 
-  /* Initialize channelpadding parameters to defaults until we get
-   * a consensus */
+  /* Initialize channelpadding and circpad parameters to defaults
+   * until we get a consensus */
   channelpadding_new_consensus_params(NULL);
+  circpad_new_consensus_params(NULL);
+
+  /* Initialize circuit padding to defaults+torrc until we get a consensus */
+  circpad_machines_init();
 
   /* Initialize predicted ports list after loading options */
   predicted_ports_init();
@@ -766,6 +771,7 @@ tor_free_all(int postfork)
   dns_free_all();
   clear_pending_onions();
   circuit_free_all();
+  circpad_machines_free();
   entry_guards_free_all();
   pt_free_all();
   channel_tls_free_all();