Merge remote-tracking branch 'asn/bug3594_rebased_and_fixed'

Conflicts:
	src/common/util.c
	src/or/entrynodes.h

1 files changed, 52 insertions, 0 deletions

diff --git a/src/or/transports.c b/src/or/transports.c
index b5a00c90ec..0afba24ea0 100644
--- a/src/or/transports.c
+++ b/src/or/transports.c
@@ -95,6 +95,7 @@
 #include "util.h"
 #include "router.h"
 #include "statefile.h"
+#include "entrynodes.h"
 
 static process_environment_t *
 create_managed_proxy_environment(const managed_proxy_t *mp);
@@ -1420,6 +1421,57 @@ pt_get_extra_info_descriptor_string(void)
   return the_string;
 }
 
+/** Stringify the SOCKS arguments in <b>socks_args</b> according to
+ *  180_pluggable_transport.txt.  The string is allocated on the heap
+ *  and it's the responsibility of the caller to free it after use. */
+char *
+pt_stringify_socks_args(const smartlist_t *socks_args)
+{
+  /* tmp place to store escaped socks arguments, so that we can
+     concatenate them up afterwards */
+  smartlist_t *sl_tmp = NULL;
+  char *escaped_string = NULL;
+  char *new_string = NULL;
+
+  tor_assert(socks_args);
+  tor_assert(smartlist_len(socks_args) > 0);
+
+  sl_tmp = smartlist_new();
+
+  SMARTLIST_FOREACH_BEGIN(socks_args, const char *, s) {
+    /* Escape ';' and '\'. */
+    escaped_string = tor_escape_str_for_socks_arg(s);
+    if (!escaped_string)
+      goto done;
+
+    smartlist_add(sl_tmp, escaped_string);
+  } SMARTLIST_FOREACH_END(s);
+
+  new_string = smartlist_join_strings(sl_tmp, ";", 0, NULL);
+
+ done:
+  SMARTLIST_FOREACH(sl_tmp, char *, s, tor_free(s));
+  smartlist_free(sl_tmp);
+
+  return new_string;
+}
+
+/** Return a string of the SOCKS arguments that we should pass to the
+ *  pluggable transports proxy in <b>addr</b>:<b>port</b> according to
+ *  180_pluggable_transport.txt.  The string is allocated on the heap
+ *  and it's the responsibility of the caller to free it after use. */
+char *
+pt_get_socks_args_for_proxy_addrport(const tor_addr_t *addr, uint16_t port)
+{
+  const smartlist_t *socks_args = NULL;
+
+  socks_args = get_socks_args_by_bridge_addrport(addr, port);
+  if (!socks_args)
+    return NULL;
+
+  return pt_stringify_socks_args(socks_args);
+}
+
 /** The tor config was read.
  *  Destroy all managed proxies that were marked by a previous call to
  *  prepare_proxy_list_for_config_read() and are not used by the new