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[tor-commits] [tor/master] Introduce the Tor2webRendezvousPoints torrc option.



commit e02138eb65a71af8eb0de9077a82aa25eb0ac03e
Author: George Kadianakis <desnacked@xxxxxxxxxx>
Date:   Mon Sep 15 15:26:42 2014 +0300

    Introduce the Tor2webRendezvousPoints torrc option.
---
 doc/tor.1.txt   |   16 ++++++++++++++++
 src/or/config.c |   11 ++++++++++-
 src/or/or.h     |    3 +++
 3 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/doc/tor.1.txt b/doc/tor.1.txt
index d6b1432..171193b 100644
--- a/doc/tor.1.txt
+++ b/doc/tor.1.txt
@@ -1322,6 +1322,22 @@ The following options are useful only for clients (that is, if
     To enable this option the compile time flag --enable-tor2webmode must be
     specified. (Default: 0)
 
+[[Tor2webRendezvousPoints]] **Tor2webRendezvousPoints** __node__,__node__,__...__::
+    A list of identity fingerprints, nicknames, country codes and
+    address patterns of nodes that are allowed to be used as RPs
+    in HS circuits; any other nodes will not be used as RPs.
+    (Example:
+    Tor2webRendezvousPoints Fastyfasty, ABCD1234CDEF5678ABCD1234CDEF5678ABCD1234, \{cc}, 255.254.0.0/8) +
+ +
+    This feature can only be used if Tor2webMode is also enabled.
+ +
+    ExcludeNodes have higher priority than Tor2webRendezvousPoints,
+    which means that nodes specified in ExcludeNodes will not be
+    picked as RPs.
+ +
+    If no nodes in Tor2webRendezvousPoints are currently available for
+    use, Tor will choose a random node when building HS circuits.
+
 [[UseMicrodescriptors]] **UseMicrodescriptors** **0**|**1**|**auto**::
     Microdescriptors are a smaller version of the information that Tor needs
     in order to build its circuits.  Using microdescriptors makes Tor clients
diff --git a/src/or/config.c b/src/or/config.c
index 10af92a..fb48e1e 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -66,6 +66,7 @@ static config_abbrev_t option_abbrevs_[] = {
   PLURAL(ExitNode),
   PLURAL(EntryNode),
   PLURAL(ExcludeNode),
+  PLURAL(Tor2webRendezvousPoint),
   PLURAL(FirewallPort),
   PLURAL(LongLivedPort),
   PLURAL(HiddenServiceNode),
@@ -407,6 +408,7 @@ static config_var_t option_vars_[] = {
   OBSOLETE("TestVia"),
   V(TokenBucketRefillInterval,   MSEC_INTERVAL, "100 msec"),
   V(Tor2webMode,                 BOOL,     "0"),
+  V(Tor2webRendezvousPoints,      ROUTERSET, NULL),
   V(TLSECGroup,                  STRING,   NULL),
   V(TrackHostExits,              CSV,      NULL),
   V(TrackHostExitsExpire,        INTERVAL, "30 minutes"),
@@ -1242,7 +1244,8 @@ options_need_geoip_info(const or_options_t *options, const char **reason_out)
     routerset_needs_geoip(options->EntryNodes) ||
     routerset_needs_geoip(options->ExitNodes) ||
     routerset_needs_geoip(options->ExcludeExitNodes) ||
-    routerset_needs_geoip(options->ExcludeNodes);
+    routerset_needs_geoip(options->ExcludeNodes) ||
+    routerset_needs_geoip(options->Tor2webRendezvousPoints);
 
   if (routerset_usage && reason_out) {
     *reason_out = "We've been configured to use (or avoid) nodes in certain "
@@ -1623,6 +1626,8 @@ options_act(const or_options_t *old_options)
                          options->ExcludeExitNodes) ||
         !routerset_equal(old_options->EntryNodes, options->EntryNodes) ||
         !routerset_equal(old_options->ExitNodes, options->ExitNodes) ||
+        !routerset_equal(old_options->Tor2webRendezvousPoints,
+                         options->Tor2webRendezvousPoints) ||
         options->StrictNodes != old_options->StrictNodes) {
       log_info(LD_CIRC,
                "Changed to using entry guards or bridges, or changed "
@@ -2958,6 +2963,10 @@ options_validate(or_options_t *old_options, or_options_t *options,
     options->UseEntryGuards = 0;
   }
 
+  if (options->Tor2webRendezvousPoints && !options->Tor2webMode) {
+    REJECT("Tor2webRendezvousPoints cannot be set without Tor2webMode.");
+  }
+
   if (!(options->UseEntryGuards) &&
       (options->RendConfigLines != NULL)) {
     log_warn(LD_CONFIG,
diff --git a/src/or/or.h b/src/or/or.h
index 06d4e3c..be6480a 100644
--- a/src/or/or.h
+++ b/src/or/or.h
@@ -3593,6 +3593,9 @@ typedef struct {
    * circuits.) */
   int Tor2webMode;
 
+  /** A routerset that should be used when picking RPs for HS circuits. */
+  routerset_t *Tor2webRendezvousPoints;
+
   /** Close hidden service client circuits immediately when they reach
    * the normal circuit-build timeout, even if they have already sent
    * an INTRODUCE1 cell on its way to the service. */



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