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Add PolarSSL support

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This commit is contained in:
Mike Gelfand 2015-01-07 13:19:00 +00:00
parent 035589f8af
commit d877fb9cde
4 changed files with 382 additions and 2 deletions
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13
CMakeLists.txt
View file

@ -29,7 +29,7 @@ tr_auto_option(USE_SYSTEM_MINIUPNPC "Use system miniupnpc library" AUTO)
tr_auto_option(USE_SYSTEM_NATPMP "Use system natpmp library" AUTO)
tr_auto_option(USE_SYSTEM_UTP "Use system utp library" AUTO)
tr_auto_option(USE_SYSTEM_B64 "Use system b64 library" AUTO)
tr_list_option(WITH_CRYPTO "Use specified crypto library" AUTO openssl cyassl)
tr_list_option(WITH_CRYPTO "Use specified crypto library" AUTO openssl cyassl polarssl)
tr_auto_option(WITH_INOTIFY "Enable inotify support (on systems that support it)" AUTO)
tr_auto_option(WITH_KQUEUE "Enable kqueue support (on systems that support it)" AUTO)
tr_auto_option(WITH_SYSTEMD "Add support for systemd startup notification (on systems that support it)" AUTO)
@ -96,6 +96,7 @@ set(CURL_MINIMUM 7.15.4)
set(EVENT2_MINIMUM 2.0.10)
set(OPENSSL_MINIMUM 0.9.4)
set(CYASSL_MINIMUM 3.0)
set(POLARSSL_MINIMUM 1.3)
set(ZLIB_MINIMUM 1.2.3)
set(GTK_MINIMUM 3.4.0)
set(GLIB_MINIMUM 2.32.0)
@ -157,6 +158,16 @@ if(WITH_CRYPTO STREQUAL "AUTO" OR WITH_CRYPTO STREQUAL "cyassl")
set(CRYPTO_LIBRARIES ${CYASSL_LIBRARIES})
endif()
endif()
if(WITH_CRYPTO STREQUAL "AUTO" OR WITH_CRYPTO STREQUAL "polarssl")
tr_get_required_flag(WITH_CRYPTO POLARSSL_IS_REQUIRED)
find_package(PolarSSL ${POLARSSL_MINIMUM} ${POLARSSL_IS_REQUIRED})
tr_fixup_list_option(WITH_CRYPTO "polarssl" POLARSSL_FOUND "AUTO" POLARSSL_IS_REQUIRED)
if(WITH_CRYPTO STREQUAL "polarssl")
set(CRYPTO_PKG "polarssl")
set(CRYPTO_INCLUDE_DIRS ${POLARSSL_INCLUDE_DIRS})
set(CRYPTO_LIBRARIES ${POLARSSL_LIBRARIES})
endif()
endif()
# We should have found the library by now
if(CRYPTO_PKG STREQUAL "")
if(WITH_CRYPTO STREQUAL "AUTO")

47
cmake/FindPolarSSL.cmake Normal file
View file

@ -0,0 +1,47 @@
if(POLARSSL_PREFER_STATIC_LIB)
set(POLARSSL_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
if(WIN32)
set(CMAKE_FIND_LIBRARY_SUFFIXES .a .lib ${CMAKE_FIND_LIBRARY_SUFFIXES})
else()
set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
endif()
if(UNIX)
find_package(PkgConfig QUIET)
pkg_check_modules(_POLARSSL QUIET polarssl)
endif()
find_path(POLARSSL_INCLUDE_DIR NAMES polarssl/version.h HINTS ${_POLARSSL_INCLUDEDIR})
find_library(POLARSSL_LIBRARY NAMES polarssl HINTS ${_POLARSSL_LIBDIR})
if(POLARSSL_INCLUDE_DIR)
if(_POLARSSL_VERSION)
set(POLARSSL_VERSION ${_POLARSSL_VERSION})
else()
file(STRINGS "${POLARSSL_INCLUDE_DIR}/polarssl/version.h" POLARSSL_VERSION_STR REGEX "^#define[\t ]+POLARSSL_VERSION_STRING[\t ]+\"[^\"]+\"")
if(POLARSSL_VERSION_STR MATCHES "\"([^\"]+)\"")
set(POLARSSL_VERSION "${CMAKE_MATCH_1}")
endif()
endif()
endif()
set(POLARSSL_INCLUDE_DIRS ${POLARSSL_INCLUDE_DIR})
set(POLARSSL_LIBRARIES ${POLARSSL_LIBRARY})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PolarSSL
REQUIRED_VARS
POLARSSL_LIBRARY
POLARSSL_INCLUDE_DIR
VERSION_VAR
POLARSSL_VERSION
)
mark_as_advanced(POLARSSL_INCLUDE_DIR POLARSSL_LIBRARY)
if(POLARSSL_PREFER_STATIC_LIB)
set(CMAKE_FIND_LIBRARY_SUFFIXES ${POLARSSL_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
unset(POLARSSL_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES)
endif()

25
configure.ac
View file

@ -50,6 +50,8 @@ OPENSSL_MINIMUM=0.9.4
AC_SUBST(OPENSSL_MINIMUM)
CYASSL_MINIMUM=3.0
AC_SUBST(CYASSL_MINIMUM)
POLARSSL_MINIMUM=0x01030000 # 1.3
AC_SUBST(POLARSSL_MINIMUM)
##
##
@ -123,7 +125,7 @@ PKG_CHECK_MODULES(ZLIB, [zlib >= $ZLIB_MINIMUM])
AC_ARG_WITH([crypto], AS_HELP_STRING([--with-crypto=PKG],
[Use specified crypto library: auto (default), openssl, cyassl]),
[Use specified crypto library: auto (default), openssl, cyassl, polarssl]),
[want_crypto=$withval], [want_crypto=auto])
AS_IF([test "x$want_crypto" = "xauto" -o "x$want_crypto" = "xopenssl"], [
@ -142,6 +144,27 @@ AS_IF([test "x$want_crypto" = "xauto" -o "x$want_crypto" = "xcyassl"], [
)]
)
])
AS_IF([test "x$want_crypto" = "xauto" -o "x$want_crypto" = "xpolarssl"], [
AC_CHECK_HEADER([polarssl/version.h],
[AC_EGREP_CPP([version_ok], [#include <polarssl/version.h>
#if defined (POLARSSL_VERSION_NUMBER) && POLARSSL_VERSION_NUMBER >= $POLARSSL_MINIMUM
version_ok
#endif],
[AC_CHECK_LIB([polarssl], [dhm_init],
[want_crypto="polarssl"; CRYPTO_PKG="polarssl"; CRYPTO_CFLAGS=""; CRYPTO_LIBS="-lpolarssl"],
[AS_IF([test "x$want_crypto" = "xpolarssl"],
[AC_MSG_ERROR([PolarSSL support requested, but library not found.])]
)]
)],
[AS_IF([test "x$want_crypto" = "xpolarssl"],
[AC_MSG_ERROR([PolarSSL support requested, but version not suitable.])]
)]
)],
[AS_IF([test "x$want_crypto" = "xpolarssl"],
[AC_MSG_ERROR([PolarSSL support requested, but headers not found.])]
)]
)
])
# we should have found the library by now
AS_IF([test "x$CRYPTO_PKG" = "x"], [
AS_IF([test "x$want_crypto" = "xauto"],

299
libtransmission/crypto-utils-polarssl.c Normal file
View file

@ -0,0 +1,299 @@
/*
* This file Copyright (C) Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#include <assert.h>
#include <polarssl/arc4.h>
#include <polarssl/base64.h>
#include <polarssl/ctr_drbg.h>
#include <polarssl/dhm.h>
#include <polarssl/error.h>
#include <polarssl/sha1.h>
#include "transmission.h"
#include "crypto-utils.h"
#include "log.h"
#include "platform.h"
#include "utils.h"
#define TR_CRYPTO_DH_SECRET_FALLBACK
#include "crypto-utils-fallback.c"
/***
****
***/
#define MY_NAME "tr_crypto_utils"
static void
log_polarssl_error (int error_code,
const char * file,
int line)
{
if (tr_logLevelIsActive (TR_LOG_ERROR))
{
char error_message[256];
polarssl_strerror (error_code, error_message, sizeof (error_message));
tr_logAddMessage (file, line, TR_LOG_ERROR, MY_NAME, "PolarSSL error: %s", error_message);
}
}
#define log_error(error_code) log_polarssl_error(error_code, __FILE__, __LINE__)
static bool
check_polarssl_result (int result,
int expected_result,
const char * file,
int line)
{
const bool ret = result == expected_result;
if (!ret)
log_polarssl_error (result, file, line);
return ret;
}
#define check_result(result) check_polarssl_result ((result), 0, __FILE__, __LINE__)
#define check_result_eq(result, x_result) check_polarssl_result ((result), (x_result), __FILE__, __LINE__)
/***
****
***/
static int
my_rand (void * context UNUSED, unsigned char * buffer, size_t buffer_size)
{
size_t i;
for (i = 0; i < buffer_size; ++i)
buffer[i] = tr_rand_int_weak (256);
return 0;
}
static ctr_drbg_context *
get_rng (void)
{
static ctr_drbg_context rng;
static bool rng_initialized = false;
if (!rng_initialized)
{
if (!check_result (ctr_drbg_init (&rng, &my_rand, NULL, NULL, 0)))
return NULL;
rng_initialized = true;
}
return &rng;
}
static tr_lock *
get_rng_lock (void)
{
static tr_lock * lock = NULL;
if (lock == NULL)
lock = tr_lockNew ();
return lock;
}
/***
****
***/
tr_sha1_ctx_t
tr_sha1_init (void)
{
sha1_context * handle = tr_new (sha1_context, 1);
sha1_starts (handle);
return handle;
}
bool
tr_sha1_update (tr_sha1_ctx_t handle,
const void * data,
size_t data_length)
{
assert (handle != NULL);
if (data_length == 0)
return true;
assert (data != NULL);
sha1_update (handle, data, data_length);
return true;
}
bool
tr_sha1_final (tr_sha1_ctx_t handle,
uint8_t * hash)
{
if (hash != NULL)
{
assert (handle != NULL);
sha1_finish (handle, hash);
}
tr_free (handle);
return true;
}
/***
****
***/
tr_rc4_ctx_t
tr_rc4_new (void)
{
return tr_new0 (arc4_context, 1);
}
void
tr_rc4_free (tr_rc4_ctx_t handle)
{
tr_free (handle);
}
void
tr_rc4_set_key (tr_rc4_ctx_t handle,
const uint8_t * key,
size_t key_length)
{
assert (handle != NULL);
assert (key != NULL);
arc4_setup (handle, key, key_length);
}
void
tr_rc4_process (tr_rc4_ctx_t handle,
const void * input,
void * output,
size_t length)
{
assert (handle != NULL);
if (length == 0)
return;
assert (input != NULL);
assert (output != NULL);
arc4_crypt (handle, length, input, output);
}
/***
****
***/
tr_dh_ctx_t
tr_dh_new (const uint8_t * prime_num,
size_t prime_num_length,
const uint8_t * generator_num,
size_t generator_num_length)
{
dhm_context * handle = tr_new0 (dhm_context, 1);
assert (prime_num != NULL);
assert (generator_num != NULL);
dhm_init (handle);
if (!check_result (mpi_read_binary (&handle->P, prime_num, prime_num_length)) ||
!check_result (mpi_read_binary (&handle->G, generator_num, generator_num_length)))
{
dhm_free (handle);
return NULL;
}
handle->len = prime_num_length;
return handle;
}
void
tr_dh_free (tr_dh_ctx_t handle)
{
if (handle == NULL)
return;
dhm_free (handle);
}
bool
tr_dh_make_key (tr_dh_ctx_t raw_handle,
size_t private_key_length,
uint8_t * public_key,
size_t * public_key_length)
{
dhm_context * handle = raw_handle;
assert (handle != NULL);
assert (public_key != NULL);
if (public_key_length != NULL)
*public_key_length = handle->len;
return check_result (dhm_make_public (handle, private_key_length, public_key,
handle->len, my_rand, NULL));
}
tr_dh_secret_t
tr_dh_agree (tr_dh_ctx_t raw_handle,
const uint8_t * other_public_key,
size_t other_public_key_length)
{
dhm_context * handle = raw_handle;
struct tr_dh_secret * ret;
size_t secret_key_length;
assert (handle != NULL);
assert (other_public_key != NULL);
if (!check_result (dhm_read_public (handle, other_public_key,
other_public_key_length)))
return NULL;
ret = tr_dh_secret_new (handle->len);
secret_key_length = handle->len;
if (!check_result (dhm_calc_secret (handle, ret->key,
&secret_key_length, my_rand, NULL)))
{
tr_dh_secret_free (ret);
return NULL;
}
tr_dh_secret_align (ret, secret_key_length);
return ret;
}
/***
****
***/
bool
tr_rand_buffer (void * buffer,
size_t length)
{
bool ret;
tr_lock * rng_lock = get_rng_lock ();
assert (buffer != NULL);
tr_lockLock (rng_lock);
ret = check_result (ctr_drbg_random (get_rng (), buffer, length));
tr_lockUnlock (rng_lock);
return ret;
}