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Merge pull request #3805 from sigiesec/curve-zerocopy

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CURVE: Reduce number of memory allocations and message copies
This commit is contained in:
Luca Boccassi 2020-02-04 08:58:31 +01:00 committed by GitHub
commit 06bdebfe8d
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GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 424 additions and 113 deletions
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4
CMakeLists.txt
View File

@ -174,6 +174,7 @@ endif()
# To disable curve, use --disable-curve
option(WITH_LIBSODIUM "Use libsodium instead of built-in tweetnacl" OFF)
option(WITH_LIBSODIUM_STATIC "Use static libsodium library" OFF)
option(ENABLE_CURVE "Enable CURVE security" ON)
if(NOT ENABLE_CURVE)
@ -183,6 +184,9 @@ elseif(WITH_LIBSODIUM)
if(SODIUM_FOUND)
message(STATUS "Using libsodium for CURVE security")
include_directories(${SODIUM_INCLUDE_DIRS})
if(WITH_LIBSODIUM_STATIC)
add_compile_definitions(SODIUM_STATIC)
endif()
set(ZMQ_USE_LIBSODIUM 1)
set(ZMQ_HAVE_CURVE 1)
else()

12
Makefile.am
View File

@ -1085,7 +1085,8 @@ test_apps += \
unittests/unittest_mtrie \
unittests/unittest_ip_resolver \
unittests/unittest_udp_address \
unittests/unittest_radix_tree
unittests/unittest_radix_tree \
unittests/unittest_curve_encoding
unittests_unittest_poller_SOURCES = unittests/unittest_poller.cpp
unittests_unittest_poller_CPPFLAGS = -I$(top_srcdir)/src ${TESTUTIL_CPPFLAGS} $(CODE_COVERAGE_CPPFLAGS)
@ -1140,6 +1141,15 @@ unittests_unittest_radix_tree_LDADD = \
$(top_builddir)/src/.libs/libzmq.a \
${src_libzmq_la_LIBADD} \
$(CODE_COVERAGE_LDFLAGS)
unittests_unittest_curve_encoding_SOURCES = unittests/unittest_curve_encoding.cpp
unittests_unittest_curve_encoding_CPPFLAGS = -I$(top_srcdir)/src ${TESTUTIL_CPPFLAGS} $(CODE_COVERAGE_CPPFLAGS)
unittests_unittest_curve_encoding_CXXFLAGS = $(CODE_COVERAGE_CXXFLAGS)
unittests_unittest_curve_encoding_LDADD = \
${TESTUTIL_LIBS} \
$(top_builddir)/src/.libs/libzmq.a \
${src_libzmq_la_LIBADD} \
$(CODE_COVERAGE_LDFLAGS)
endif
check_PROGRAMS = ${test_apps}

15
src/curve_client.cpp
View File

@ -137,7 +137,7 @@ int zmq::curve_client_t::produce_hello (msg_t *msg_)
int rc = msg_->init_size (200);
errno_assert (rc == 0);
rc = _tools.produce_hello (msg_->data (), cn_nonce);
rc = _tools.produce_hello (msg_->data (), get_and_inc_nonce ());
if (rc == -1) {
session->get_socket ()->event_handshake_failed_protocol (
session->get_endpoint (), ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC);
@ -150,15 +150,14 @@ int zmq::curve_client_t::produce_hello (msg_t *msg_)
return -1;
}
cn_nonce++;
return 0;
}
int zmq::curve_client_t::process_welcome (const uint8_t *msg_data_,
size_t msg_size_)
{
const int rc = _tools.process_welcome (msg_data_, msg_size_, cn_precom);
const int rc = _tools.process_welcome (msg_data_, msg_size_,
get_writable_precom_buffer ());
if (rc == -1) {
session->get_socket ()->event_handshake_failed_protocol (
@ -186,7 +185,7 @@ int zmq::curve_client_t::produce_initiate (msg_t *msg_)
int rc = msg_->init_size (msg_size);
errno_assert (rc == 0);
rc = _tools.produce_initiate (msg_->data (), msg_size, cn_nonce,
rc = _tools.produce_initiate (msg_->data (), msg_size, get_and_inc_nonce (),
&metadata_plaintext[0], metadata_length);
if (-1 == rc) {
@ -197,8 +196,6 @@ int zmq::curve_client_t::produce_initiate (msg_t *msg_)
return -1;
}
cn_nonce++;
return 0;
}
@ -227,10 +224,10 @@ int zmq::curve_client_t::process_ready (const uint8_t *msg_data_,
memcpy (ready_nonce, "CurveZMQREADY---", 16);
memcpy (ready_nonce + 16, msg_data_ + 6, 8);
cn_peer_nonce = get_uint64 (msg_data_ + 6);
set_peer_nonce (get_uint64 (msg_data_ + 6));
int rc = crypto_box_open_afternm (&ready_plaintext[0], &ready_box[0], clen,
ready_nonce, cn_precom);
ready_nonce, get_precom_buffer ());
if (rc != 0) {
session->get_socket ()->event_handshake_failed_protocol (

264
src/curve_mechanism_base.cpp
View File

@ -35,67 +35,19 @@
#include "session_base.hpp"
#ifdef ZMQ_HAVE_CURVE
zmq::curve_mechanism_base_t::curve_mechanism_base_t (
session_base_t *session_,
const options_t &options_,
const char *encode_nonce_prefix_,
const char *decode_nonce_prefix_) :
mechanism_base_t (session_, options_),
encode_nonce_prefix (encode_nonce_prefix_),
decode_nonce_prefix (decode_nonce_prefix_),
cn_nonce (1),
cn_peer_nonce (1)
curve_encoding_t (encode_nonce_prefix_, decode_nonce_prefix_)
{
}
int zmq::curve_mechanism_base_t::encode (msg_t *msg_)
{
const size_t mlen = crypto_box_ZEROBYTES + 1 + msg_->size ();
uint8_t message_nonce[crypto_box_NONCEBYTES];
memcpy (message_nonce, encode_nonce_prefix, 16);
put_uint64 (message_nonce + 16, cn_nonce);
uint8_t flags = 0;
if (msg_->flags () & msg_t::more)
flags |= 0x01;
if (msg_->flags () & msg_t::command)
flags |= 0x02;
std::vector<uint8_t> message_plaintext (mlen);
std::fill (message_plaintext.begin (),
message_plaintext.begin () + crypto_box_ZEROBYTES, 0);
message_plaintext[crypto_box_ZEROBYTES] = flags;
// this is copying the data from insecure memory, so there is no point in
// using secure_allocator_t for message_plaintext
if (msg_->size () > 0)
memcpy (&message_plaintext[crypto_box_ZEROBYTES + 1], msg_->data (),
msg_->size ());
std::vector<uint8_t> message_box (mlen);
int rc = crypto_box_afternm (&message_box[0], &message_plaintext[0], mlen,
message_nonce, cn_precom);
zmq_assert (rc == 0);
rc = msg_->close ();
zmq_assert (rc == 0);
rc = msg_->init_size (16 + mlen - crypto_box_BOXZEROBYTES);
zmq_assert (rc == 0);
uint8_t *message = static_cast<uint8_t *> (msg_->data ());
memcpy (message, "\x07MESSAGE", 8);
memcpy (message + 8, message_nonce + 16, 8);
memcpy (message + 16, &message_box[crypto_box_BOXZEROBYTES],
mlen - crypto_box_BOXZEROBYTES);
cn_nonce++;
return 0;
return curve_encoding_t::encode (msg_);
}
int zmq::curve_mechanism_base_t::decode (msg_t *msg_)
@ -104,70 +56,212 @@ int zmq::curve_mechanism_base_t::decode (msg_t *msg_)
if (rc == -1)
return -1;
int error_event_code;
rc = curve_encoding_t::decode (msg_, &error_event_code);
if (-1 == rc) {
session->get_socket ()->event_handshake_failed_protocol (
session->get_endpoint (), error_event_code);
}
return rc;
}
zmq::curve_encoding_t::curve_encoding_t (const char *encode_nonce_prefix_,
const char *decode_nonce_prefix_) :
_encode_nonce_prefix (encode_nonce_prefix_),
_decode_nonce_prefix (decode_nonce_prefix_),
_cn_nonce (1),
_cn_peer_nonce (1)
{
}
// Right now, we only transport the lower two bit flags of zmq::msg_t, so they
// are binary identical, and we can just use a bitmask to select them. If we
// happened to add more flags, this might change.
static const uint8_t flag_mask = zmq::msg_t::more | zmq::msg_t::command;
static const size_t flags_len = 1;
static const size_t nonce_prefix_len = 16;
static const char message_command[] = "\x07MESSAGE";
static const size_t message_command_len = sizeof (message_command) - 1;
static const size_t message_header_len =
message_command_len + sizeof (zmq::curve_encoding_t::nonce_t);
#ifndef ZMQ_USE_LIBSODIUM
static const size_t crypto_box_MACBYTES = 16;
#endif
int zmq::curve_encoding_t::check_validity (msg_t *msg_, int *error_event_code_)
{
const size_t size = msg_->size ();
const uint8_t *message = static_cast<uint8_t *> (msg_->data ());
const uint8_t *const message = static_cast<uint8_t *> (msg_->data ());
if (size < 8 || memcmp (message, "\x07MESSAGE", 8)) {
session->get_socket ()->event_handshake_failed_protocol (
session->get_endpoint (), ZMQ_PROTOCOL_ERROR_ZMTP_UNEXPECTED_COMMAND);
if (size < message_command_len
|| 0 != memcmp (message, message_command, message_command_len)) {
*error_event_code_ = ZMQ_PROTOCOL_ERROR_ZMTP_UNEXPECTED_COMMAND;
errno = EPROTO;
return -1;
}
if (size < 33) {
session->get_socket ()->event_handshake_failed_protocol (
session->get_endpoint (),
ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_MESSAGE);
if (size < message_header_len + crypto_box_MACBYTES + flags_len) {
*error_event_code_ = ZMQ_PROTOCOL_ERROR_ZMTP_MALFORMED_COMMAND_MESSAGE;
errno = EPROTO;
return -1;
}
{
const uint64_t nonce = get_uint64 (message + message_command_len);
if (nonce <= _cn_peer_nonce) {
*error_event_code_ = ZMQ_PROTOCOL_ERROR_ZMTP_INVALID_SEQUENCE;
errno = EPROTO;
return -1;
}
set_peer_nonce (nonce);
}
return 0;
}
int zmq::curve_encoding_t::encode (msg_t *msg_)
{
uint8_t message_nonce[crypto_box_NONCEBYTES];
memcpy (message_nonce, _encode_nonce_prefix, nonce_prefix_len);
put_uint64 (message_nonce + nonce_prefix_len, get_and_inc_nonce ());
#ifdef ZMQ_USE_LIBSODIUM
const size_t mlen = flags_len + msg_->size ();
std::vector<uint8_t> message_plaintext (mlen);
#else
const size_t mlen = crypto_box_ZEROBYTES + flags_len + msg_->size ();
std::vector<uint8_t> message_plaintext_with_zerobytes (mlen);
uint8_t *const message_plaintext =
&message_plaintext_with_zerobytes[crypto_box_ZEROBYTES];
std::fill (message_plaintext_with_zerobytes.begin (),
message_plaintext_with_zerobytes.begin () + crypto_box_ZEROBYTES,
0);
#endif
const uint8_t flags = msg_->flags () & flag_mask;
message_plaintext[0] = flags;
// this is copying the data from insecure memory, so there is no point in
// using secure_allocator_t for message_plaintext
if (msg_->size () > 0)
memcpy (&message_plaintext[flags_len], msg_->data (), msg_->size ());
#ifdef ZMQ_USE_LIBSODIUM
msg_t msg_box;
int rc =
msg_box.init_size (message_header_len + mlen + crypto_box_MACBYTES);
zmq_assert (rc == 0);
rc = crypto_box_easy_afternm (
static_cast<uint8_t *> (msg_box.data ()) + message_header_len,
&message_plaintext[0], mlen, message_nonce, _cn_precom);
zmq_assert (rc == 0);
msg_->move (msg_box);
uint8_t *const message = static_cast<uint8_t *> (msg_->data ());
#else
std::vector<uint8_t> message_box (mlen);
int rc =
crypto_box_afternm (&message_box[0], &message_plaintext_with_zerobytes[0],
mlen, message_nonce, _cn_precom);
zmq_assert (rc == 0);
rc = msg_->close ();
zmq_assert (rc == 0);
rc = msg_->init_size (16 + mlen - crypto_box_BOXZEROBYTES);
zmq_assert (rc == 0);
uint8_t *const message = static_cast<uint8_t *> (msg_->data ());
memcpy (message + message_header_len, &message_box[crypto_box_BOXZEROBYTES],
mlen - crypto_box_BOXZEROBYTES);
#endif
memcpy (message, message_command, message_command_len);
memcpy (message + message_command_len, message_nonce + nonce_prefix_len,
sizeof (nonce_t));
return 0;
}
int zmq::curve_encoding_t::decode (msg_t *msg_, int *error_event_code_)
{
int rc = check_validity (msg_, error_event_code_);
if (0 != rc) {
return rc;
}
uint8_t *const message = static_cast<uint8_t *> (msg_->data ());
uint8_t message_nonce[crypto_box_NONCEBYTES];
memcpy (message_nonce, decode_nonce_prefix, 16);
memcpy (message_nonce + 16, message + 8, 8);
const uint64_t nonce = get_uint64 (message + 8);
if (nonce <= cn_peer_nonce) {
session->get_socket ()->event_handshake_failed_protocol (
session->get_endpoint (), ZMQ_PROTOCOL_ERROR_ZMTP_INVALID_SEQUENCE);
errno = EPROTO;
return -1;
}
cn_peer_nonce = nonce;
memcpy (message_nonce, _decode_nonce_prefix, nonce_prefix_len);
memcpy (message_nonce + nonce_prefix_len, message + message_command_len,
sizeof (nonce_t));
const size_t clen = crypto_box_BOXZEROBYTES + msg_->size () - 16;
#ifdef ZMQ_USE_LIBSODIUM
const size_t clen = msg_->size () - message_header_len;
std::vector<uint8_t> message_plaintext (clen);
uint8_t *const message_plaintext = message + message_header_len;
rc = crypto_box_open_easy_afternm (message_plaintext,
message + message_header_len, clen,
message_nonce, _cn_precom);
#else
const size_t clen =
crypto_box_BOXZEROBYTES + msg_->size () - message_header_len;
std::vector<uint8_t> message_plaintext_with_zerobytes (clen);
std::vector<uint8_t> message_box (clen);
std::fill (message_box.begin (),
message_box.begin () + crypto_box_BOXZEROBYTES, 0);
memcpy (&message_box[crypto_box_BOXZEROBYTES], message + 16,
msg_->size () - 16);
memcpy (&message_box[crypto_box_BOXZEROBYTES], message + message_header_len,
msg_->size () - message_header_len);
rc = crypto_box_open_afternm (&message_plaintext_with_zerobytes[0],
&message_box[0], clen, message_nonce,
_cn_precom);
const uint8_t *const message_plaintext =
&message_plaintext_with_zerobytes[crypto_box_ZEROBYTES];
#endif
rc = crypto_box_open_afternm (&message_plaintext[0], &message_box[0], clen,
message_nonce, cn_precom);
if (rc == 0) {
const uint8_t flags = message_plaintext[0];
#ifdef ZMQ_USE_LIBSODIUM
const size_t plaintext_size = clen - flags_len - crypto_box_MACBYTES;
if (plaintext_size > 0) {
memmove (msg_->data (), &message_plaintext[flags_len],
plaintext_size);
}
msg_->shrink (plaintext_size);
#else
rc = msg_->close ();
zmq_assert (rc == 0);
rc = msg_->init_size (clen - 1 - crypto_box_ZEROBYTES);
rc = msg_->init_size (clen - flags_len - crypto_box_ZEROBYTES);
zmq_assert (rc == 0);
const uint8_t flags = message_plaintext[crypto_box_ZEROBYTES];
if (flags & 0x01)
msg_->set_flags (msg_t::more);
if (flags & 0x02)
msg_->set_flags (msg_t::command);
// this is copying the data to insecure memory, so there is no point in
// using secure_allocator_t for message_plaintext
if (msg_->size () > 0)
memcpy (msg_->data (), &message_plaintext[crypto_box_ZEROBYTES + 1],
if (msg_->size () > 0) {
memcpy (msg_->data (), &message_plaintext[flags_len],
msg_->size ());
}
#endif
msg_->set_flags (flags & flag_mask);
} else {
// CURVE I : connection key used for MESSAGE is wrong
session->get_socket ()->event_handshake_failed_protocol (
session->get_endpoint (), ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC);
*error_event_code_ = ZMQ_PROTOCOL_ERROR_ZMTP_CRYPTOGRAPHIC;
errno = EPROTO;
}

45
src/curve_mechanism_base.hpp
View File

@ -52,7 +52,40 @@
namespace zmq
{
class curve_mechanism_base_t : public virtual mechanism_base_t
class curve_encoding_t
{
public:
curve_encoding_t (const char *encode_nonce_prefix_,
const char *decode_nonce_prefix_);
int encode (msg_t *msg_);
int decode (msg_t *msg_, int *error_event_code_);
uint8_t *get_writable_precom_buffer () { return _cn_precom; }
const uint8_t *get_precom_buffer () const { return _cn_precom; }
typedef uint64_t nonce_t;
nonce_t get_and_inc_nonce () { return _cn_nonce++; }
void set_peer_nonce (nonce_t peer_nonce_) { _cn_peer_nonce = peer_nonce_; };
private:
int check_validity (msg_t *msg_, int *error_event_code_);
const char *_encode_nonce_prefix;
const char *_decode_nonce_prefix;
nonce_t _cn_nonce;
nonce_t _cn_peer_nonce;
// Intermediary buffer used to speed up boxing and unboxing.
uint8_t _cn_precom[crypto_box_BEFORENMBYTES];
ZMQ_NON_COPYABLE_NOR_MOVABLE (curve_encoding_t)
};
class curve_mechanism_base_t : public virtual mechanism_base_t,
public curve_encoding_t
{
public:
curve_mechanism_base_t (session_base_t *session_,
@ -63,16 +96,6 @@ class curve_mechanism_base_t : public virtual mechanism_base_t
// mechanism implementation
int encode (msg_t *msg_) ZMQ_OVERRIDE;
int decode (msg_t *msg_) ZMQ_OVERRIDE;
protected:
const char *encode_nonce_prefix;
const char *decode_nonce_prefix;
uint64_t cn_nonce;
uint64_t cn_peer_nonce;
// Intermediary buffer used to speed up boxing and unboxing.
uint8_t cn_precom[crypto_box_BEFORENMBYTES];
};
}

13
src/curve_server.cpp
View File

@ -181,7 +181,7 @@ int zmq::curve_server_t::process_hello (msg_t *msg_)
memcpy (hello_nonce, "CurveZMQHELLO---", 16);
memcpy (hello_nonce + 16, hello + 112, 8);
cn_peer_nonce = get_uint64 (hello + 112);
set_peer_nonce (get_uint64 (hello + 112));
memset (hello_box, 0, crypto_box_BOXZEROBYTES);
memcpy (hello_box + crypto_box_BOXZEROBYTES, hello + 120, 80);
@ -345,7 +345,7 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
memcpy (initiate_nonce, "CurveZMQINITIATE", 16);
memcpy (initiate_nonce + 16, initiate + 105, 8);
cn_peer_nonce = get_uint64 (initiate + 105);
set_peer_nonce (get_uint64 (initiate + 105));
const uint8_t *client_key = &initiate_plaintext[crypto_box_ZEROBYTES];
@ -396,7 +396,8 @@ int zmq::curve_server_t::process_initiate (msg_t *msg_)
}
// Precompute connection secret from client key
rc = crypto_box_beforenm (cn_precom, _cn_client, _cn_secret);
rc = crypto_box_beforenm (get_writable_precom_buffer (), _cn_client,
_cn_secret);
zmq_assert (rc == 0);
// Given this is a backward-incompatible change, it's behind a socket
@ -449,13 +450,13 @@ int zmq::curve_server_t::produce_ready (msg_t *msg_)
const size_t mlen = ptr - &ready_plaintext[0];
memcpy (ready_nonce, "CurveZMQREADY---", 16);
put_uint64 (ready_nonce + 16, cn_nonce);
put_uint64 (ready_nonce + 16, get_and_inc_nonce ());
std::vector<uint8_t> ready_box (crypto_box_BOXZEROBYTES + 16
+ metadata_length);
int rc = crypto_box_afternm (&ready_box[0], &ready_plaintext[0], mlen,
ready_nonce, cn_precom);
ready_nonce, get_precom_buffer ());
zmq_assert (rc == 0);
rc = msg_->init_size (14 + mlen - crypto_box_BOXZEROBYTES);
@ -470,8 +471,6 @@ int zmq::curve_server_t::produce_ready (msg_t *msg_)
memcpy (ready + 14, &ready_box[crypto_box_BOXZEROBYTES],
mlen - crypto_box_BOXZEROBYTES);
cn_nonce++;
return 0;
}

24
src/msg.cpp
View File

@ -361,6 +361,30 @@ size_t zmq::msg_t::size () const
}
}
void zmq::msg_t::shrink (size_t new_size_)
{
// Check the validity of the message.
zmq_assert (check ());
zmq_assert (new_size_ <= size ());
switch (_u.base.type) {
case type_vsm:
_u.vsm.size = static_cast<unsigned char> (new_size_);
break;
case type_lmsg:
_u.lmsg.content->size = new_size_;
break;
case type_zclmsg:
_u.zclmsg.content->size = new_size_;
break;
case type_cmsg:
_u.cmsg.size = new_size_;
break;
default:
zmq_assert (false);
}
}
unsigned char zmq::msg_t::flags () const
{
return _u.base.flags;

2
src/msg.hpp
View File

@ -161,6 +161,8 @@ class msg_t
// references drops to 0, the message is closed and false is returned.
bool rm_refs (int refs_);
void shrink (size_t new_size_);
// Size in bytes of the largest message that is still copied around
// rather than being reference-counted.
enum

4
tests/testutil.hpp
View File

@ -61,6 +61,10 @@
// duplicated from fd.hpp
#ifdef ZMQ_HAVE_WINDOWS
#ifndef NOMINMAX
#define NOMINMAX // Macros min(a,b) and max(a,b)
#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdexcept>

1
unittests/CMakeLists.txt
View File

@ -8,6 +8,7 @@ set(unittests
unittest_ip_resolver
unittest_udp_address
unittest_radix_tree
unittest_curve_encoding
)
#if(ENABLE_DRAFTS)

153
unittests/unittest_curve_encoding.cpp Normal file
View File

@ -0,0 +1,153 @@
/*
Copyright (c) 2018 Contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "../tests/testutil_unity.hpp"
// TODO: remove this ugly hack
#ifdef close
#undef close
#endif
#include <curve_mechanism_base.hpp>
#include <msg.hpp>
#include <random.hpp>
#include <unity.h>
#include <vector>
void setUp ()
{
}
void tearDown ()
{
}
void test_roundtrip (zmq::msg_t *msg_)
{
#ifdef ZMQ_HAVE_CURVE
const std::vector<uint8_t> original (static_cast<uint8_t *> (msg_->data ()),
static_cast<uint8_t *> (msg_->data ())
+ msg_->size ());
zmq::curve_encoding_t encoding_client ("CurveZMQMESSAGEC",
"CurveZMQMESSAGES");
zmq::curve_encoding_t encoding_server ("CurveZMQMESSAGES",
"CurveZMQMESSAGEC");
uint8_t client_public[32];
uint8_t client_secret[32];
TEST_ASSERT_SUCCESS_ERRNO (
crypto_box_keypair (client_public, client_secret));
uint8_t server_public[32];
uint8_t server_secret[32];
TEST_ASSERT_SUCCESS_ERRNO (
crypto_box_keypair (server_public, server_secret));
TEST_ASSERT_SUCCESS_ERRNO (
crypto_box_beforenm (encoding_client.get_writable_precom_buffer (),
server_public, client_secret));
TEST_ASSERT_SUCCESS_ERRNO (
crypto_box_beforenm (encoding_server.get_writable_precom_buffer (),
client_public, server_secret));
TEST_ASSERT_SUCCESS_ERRNO (encoding_client.encode (msg_));
// TODO: This is hacky...
encoding_server.set_peer_nonce (0);
int error_event_code;
TEST_ASSERT_SUCCESS_ERRNO (
encoding_server.decode (msg_, &error_event_code));
TEST_ASSERT_EQUAL_INT (original.size (), msg_->size ());
if (!original.empty ()) {
TEST_ASSERT_EQUAL_UINT8_ARRAY (&original[0], msg_->data (),
original.size ());
}
#else
TEST_IGNORE_MESSAGE ("CURVE support is disabled");
#endif
}
void test_roundtrip_empty ()
{
zmq::msg_t msg;
msg.init ();
test_roundtrip (&msg);
msg.close ();
}
void test_roundtrip_small ()
{
zmq::msg_t msg;
msg.init_size (32);
memcpy (msg.data (), "0123456789ABCDEF0123456789ABCDEF", 32);
test_roundtrip (&msg);
msg.close ();
}
void test_roundtrip_large ()
{
zmq::msg_t msg;
msg.init_size (2048);
for (size_t pos = 0; pos < 2048; pos += 32) {
memcpy (static_cast<char *> (msg.data ()) + pos,
"0123456789ABCDEF0123456789ABCDEF", 32);
}
test_roundtrip (&msg);
msg.close ();
}
void test_roundtrip_empty_more ()
{
zmq::msg_t msg;
msg.init ();
msg.set_flags (zmq::msg_t::more);
test_roundtrip (&msg);
TEST_ASSERT_TRUE (msg.flags () & zmq::msg_t::more);
msg.close ();
}
int main ()
{
setup_test_environment ();
zmq::random_open ();
UNITY_BEGIN ();
RUN_TEST (test_roundtrip_empty);
RUN_TEST (test_roundtrip_small);
RUN_TEST (test_roundtrip_large);
RUN_TEST (test_roundtrip_empty_more);
zmq::random_close ();
return UNITY_END ();
}