Use trunnel for crypto_pwbox encoding/decoding.

This reduces the likelihood that I have made any exploitable errors
in the encoding/decoding.

This commit also imports the trunnel runtime source into Tor.

1 files changed, 60 insertions, 0 deletions

diff --git a/src/ext/trunnel/trunnel.h b/src/ext/trunnel/trunnel.h
new file mode 100644
index 0000000000..0a78e6cfca
--- /dev/null
+++ b/src/ext/trunnel/trunnel.h
@@ -0,0 +1,60 @@
+/* trunnel.h -- Public declarations for trunnel, to be included
+ * in trunnel header files.
+
+ * Copyright 2014, The Tor Project, Inc.
+ * See license at the end of this file for copying information.
+ */
+
+#ifndef TRUNNEL_H_INCLUDED_
+#define TRUNNEL_H_INCLUDED_
+
+#include <sys/types.h>
+
+/** Macro to declare a variable-length dynamically allocated array.  Trunnel
+ * uses these to store all variable-length arrays. */
+#define TRUNNEL_DYNARRAY_HEAD(name, elttype)       \
+  struct name {                                    \
+    size_t n_;                                     \
+    size_t allocated_;                             \
+    elttype *elts_;                                \
+  }
+
+/** Initializer for a dynamic array of a given element type. */
+#define TRUNNEL_DYNARRAY_INIT(elttype) { 0, 0, (elttype*)NULL }
+
+/** Typedef used for storing variable-length arrays of char. */
+typedef TRUNNEL_DYNARRAY_HEAD(trunnel_string_st, char) trunnel_string_t;
+
+#endif
+
+/*
+Copyright 2014  The Tor Project, Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+
+    * Neither the names of the copyright owners nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/