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Threading abstraction layer added

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This commit is contained in:
Paul Bakker 2013-09-28 14:40:38 +02:00
parent bf796acf07
commit 2466d93546
9 changed files with 318 additions and 2 deletions
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1
ChangeLog
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@ -12,6 +12,7 @@ Features
* PSK and DHE-PSK based ciphersuites added
* Memory allocation abstraction layer added
* Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
* Threading abstraction layer added (dummy / pthread / alternate)
* Public Key abstraction layer added
* Parsing Elliptic Curve keys
* Parsing Elliptic Curve certificates

80
include/polarssl/config.h
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@ -659,6 +659,39 @@
*/
#define POLARSSL_SSL_TRUNCATED_HMAC
/**
* \def POLARSSL_THREADING_ALT
*
* Provide your own alternate threading implementation.
*
* Requires: POLARSSL_THREADING_C
*
* Uncomment this to allow your own alternate threading implementation.
#define POLARSSL_THREADING_ALT
*/
/**
* \def POLARSSL_THREADING_DUMMY
*
* Provide a dummy threading implementation.
*
* Requires: POLARSSL_THREADING_C
*
* Uncomment this to enable code to compile like with threading enabled
#define POLARSSL_THREADING_DUMMY
*/
/**
* \def POLARSSL_THREADING_PTHREAD
*
* Enable the pthread wrapper layer for the threading layer.
*
* Requires: POLARSSL_THREADING_C
*
* Uncomment this to enable pthread mutexes.
#define POLARSSL_THREADING_PTHREAD
*/
/**
* \def POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3
*
@ -1435,6 +1468,27 @@
*/
#define POLARSSL_SSL_TLS_C
/**
* \def POLARSSL_THREADING_C
*
* Enable the threading abstraction layer.
* By default PolarSSL assumes it is used in a non-threaded environment or that
* contexts are not shared between threads. If you do intend to use contexts
* between threads, you will need to enable this layer to prevent race
* conditions.
*
* Module: library/threading.c
*
* This allows different threading implementations (self-implemented or
* provided).
*
* You will have to enable either POLARSSL_THREADING_ALT,
* POLARSSL_THREADING_PTHREAD or POLARSSL_THREADING_DUMMY.
*
* Enable this layer to allow use of mutexes within PolarSSL
#define POLARSSL_THREADING_C
*/
/**
* \def POLARSSL_TIMING_C
*
@ -1784,6 +1838,32 @@
#error "POLARSSL_SSL_SESSION_TICKETS_C defined, but not all prerequisites"
#endif
#if defined(POLARSSL_THREADING_DUMMY)
#if !defined(POLARSSL_THREADING_C) || defined(POLARSSL_THREADING_IMPL)
#error "POLARSSL_THREADING_DUMMY defined, but not all prerequisites"
#endif
#define POLARSSL_THREADING_IMPL
#endif
#if defined(POLARSSL_THREADING_PTHREAD)
#if !defined(POLARSSL_THREADING_C) || defined(POLARSSL_THREADING_IMPL)
#error "POLARSSL_THREADING_PTHREAD defined, but not all prerequisites"
#endif
#define POLARSSL_THREADING_IMPL
#endif
#if defined(POLARSSL_THREADING_ALT)
#if !defined(POLARSSL_THREADING_C) || defined(POLARSSL_THREADING_IMPL)
#error "POLARSSL_THREADING_ALT defined, but not all prerequisites"
#endif
#define POLARSSL_THREADING_IMPL
#endif
#if defined(POLARSSL_THREADING_C) && !defined(POLARSSL_THREADING_IMPL)
#error "POLARSSL_THREADING_C defined, single threading implementation required"
#endif
#undef POLARSSL_THREADING_IMPL
#if defined(POLARSSL_X509_USE_C) && ( !defined(POLARSSL_BIGNUM_C) || \
!defined(POLARSSL_OID_C) || !defined(POLARSSL_ASN1_PARSE_C) || \
!defined(POLARSSL_PK_PARSE_C) )

1
include/polarssl/error.h
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@ -53,6 +53,7 @@
* MPI 7 0x0002-0x0010
* GCM 2 0x0012-0x0014
* BLOWFISH 2 0x0016-0x0018
* THREADING 3 0x001A-0x001E
* AES 2 0x0020-0x0022
* CAMELLIA 2 0x0024-0x0026
* XTEA 1 0x0028-0x0028

84
include/polarssl/threading.h Normal file
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@ -0,0 +1,84 @@
/**
* \file threading.h
*
* \brief Threading abstraction layer
*
* Copyright (C) 2006-2013, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef POLARSSL_THREADING_H
#define POLARSSL_THREADING_H
#include "config.h"
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
#define POLARSSL_ERR_THREADING_FEATURE_UNAVAILABLE -0x001A /**< The selected feature is not available. */
#define POLARSSL_ERR_THREADING_BAD_INPUT_DATA -0x001C /**< Bad input parameters to function. */
#define POLARSSL_ERR_THREADING_MUTEX_ERROR -0x001E /**< Locking / unlocking / free failed with error code. */
#if defined(POLARSSL_THREADING_DUMMY)
typedef void threading_mutex_t;
#endif
#if defined(POLARSSL_THREADING_PTHREAD)
#include <pthread.h>
typedef pthread_mutex_t threading_mutex_t;
#endif
#if defined(POLARSSL_THREADING_ALT)
/* You should define the threading_mutex_t type in your header */
#include "threading_alt.h"
/**
* \brief Set your alternate threading implementation function
* pointers
*
* \param mutex_init the malloc function implementation
* \param mutex_free the free function implementation
* \param mutex_lock the lock function implementation
* \param mutex_unlock the unlock function implementation
*
* \return 0 if successful
*/
int threading_set_alt( int (*mutex_init)( threading_mutex_t * ),
int (*mutex_free)( threading_mutex_t * ),
int (*mutex_lock)( threading_mutex_t * ),
int (*mutex_unlock)( threading_mutex_t * ) );
#endif /* POLARSSL_THREADING_ALT_C */
/*
* The function pointers for mutex_init, mutex_free, mutex_ and mutex_unlock
*/
extern int (*polarssl_mutex_init)( threading_mutex_t *mutex );
extern int (*polarssl_mutex_free)( threading_mutex_t *mutex );
extern int (*polarssl_mutex_lock)( threading_mutex_t *mutex );
extern int (*polarssl_mutex_unlock)( threading_mutex_t *mutex );
#ifdef __cplusplus
}
#endif
#endif /* threading.h */

1
library/CMakeLists.txt
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@ -52,6 +52,7 @@ set(src
ssl_cli.c
ssl_srv.c
ssl_tls.c
threading.c
timing.c
version.c
x509.c

3
library/Makefile
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@ -54,7 +54,8 @@ OBJS= aes.o arc4.o asn1parse.o \
rsa.o sha1.o sha256.o \
sha512.o ssl_cache.o ssl_cli.o \
ssl_srv.o ssl_ciphersuites.o \
ssl_tls.o timing.o version.o \
ssl_tls.o threading.o timing.o \
version.o \
x509.o x509_create.o \
x509_crl.o x509_crt.o x509_csr.o \
x509write_crt.o x509write_csr.o \

13
library/error.c
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@ -145,6 +145,10 @@
#include "polarssl/ssl.h"
#endif
#if defined(POLARSSL_THREADING_C)
#include "polarssl/threading.h"
#endif
#if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)
#include "polarssl/x509.h"
#endif
@ -647,6 +651,15 @@ void polarssl_strerror( int ret, char *buf, size_t buflen )
snprintf( buf, buflen, "SHA512 - Read/write error in file" );
#endif /* POLARSSL_SHA512_C */
#if defined(POLARSSL_THREADING_C)
if( use_ret == -(POLARSSL_ERR_THREADING_FEATURE_UNAVAILABLE) )
snprintf( buf, buflen, "THREADING - The selected feature is not available" );
if( use_ret == -(POLARSSL_ERR_THREADING_BAD_INPUT_DATA) )
snprintf( buf, buflen, "THREADING - Bad input parameters to function" );
if( use_ret == -(POLARSSL_ERR_THREADING_MUTEX_ERROR) )
snprintf( buf, buflen, "THREADING - Locking / unlocking / free failed with error code" );
#endif /* POLARSSL_THREADING_C */
#if defined(POLARSSL_XTEA_C)
if( use_ret == -(POLARSSL_ERR_XTEA_INVALID_INPUT_LENGTH) )
snprintf( buf, buflen, "XTEA - The data input has an invalid length" );

134
library/threading.c Normal file
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@ -0,0 +1,134 @@
/*
* Threading abstraction layer
*
* Copyright (C) 2006-2013, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "polarssl/config.h"
#if defined(POLARSSL_THREADING_C)
#include "polarssl/threading.h"
#if defined(POLARSSL_THREADING_DUMMY)
static int threading_mutex_init_dummy( threading_mutex_t *mutex )
{
((void) mutex );
return( 0 );
}
static int threading_mutex_free_dummy( threading_mutex_t *mutex )
{
((void) mutex );
return( 0 );
}
static int threading_mutex_lock_dummy( threading_mutex_t *mutex )
{
((void) mutex );
return( 0 );
}
static int threading_mutex_unlock_dummy( threading_mutex_t *mutex )
{
((void) mutex );
return( 0 );
}
int (*polarssl_mutex_init)( threading_mutex_t * ) = threading_mutex_init_dummy;
int (*polarssl_mutex_free)( threading_mutex_t * ) = threading_mutex_free_dummy;
int (*polarssl_mutex_lock)( threading_mutex_t * ) = threading_mutex_lock_dummy;
int (*polarssl_mutex_unlock)( threading_mutex_t * ) = threading_mutex_unlock_dummy;
#endif /* POLARSSL_THREADING_DUMMY */
#if defined(POLARSSL_THREADING_PTHREAD)
static int threading_mutex_init_pthread( threading_mutex_t *mutex )
{
if( mutex == NULL )
return( POLARSSL_ERR_THREADING_BAD_INPUT_DATA );
if( pthread_mutex_init( mutex, NULL ) != 0 )
return( POLARSSL_ERR_THREADING_MUTEX_ERROR );
return( 0 );
}
static int threading_mutex_free_pthread( threading_mutex_t *mutex )
{
if( mutex == NULL )
return( POLARSSL_ERR_THREADING_BAD_INPUT_DATA );
if( pthread_mutex_destroy( mutex ) != 0 )
return( POLARSSL_ERR_THREADING_MUTEX_ERROR );
return( 0 );
}
static int threading_mutex_lock_pthread( threading_mutex_t *mutex )
{
if( mutex == NULL )
return( POLARSSL_ERR_THREADING_BAD_INPUT_DATA );
if( pthread_mutex_lock( mutex ) != 0 )
return( POLARSSL_ERR_THREADING_MUTEX_ERROR );
return( 0 );
}
static int threading_mutex_unlock_pthread( threading_mutex_t *mutex )
{
if( mutex == NULL )
return( POLARSSL_ERR_THREADING_BAD_INPUT_DATA );
if( pthread_mutex_unlock( mutex ) != 0 )
return( POLARSSL_ERR_THREADING_MUTEX_ERROR );
return( 0 );
}
int (*polarssl_mutex_init)( threading_mutex_t * ) = threading_mutex_init_pthread;
int (*polarssl_mutex_free)( threading_mutex_t * ) = threading_mutex_free_pthread;
int (*polarssl_mutex_lock)( threading_mutex_t * ) = threading_mutex_lock_pthread;
int (*polarssl_mutex_unlock)( threading_mutex_t * ) = threading_mutex_unlock_pthread;
#endif /* POLARSSL_THREADING_PTHREAD */
#if defined(POLARSSL_THREADING_ALT)
int (*polarssl_mutex_init)( threading_mutex_t * ) = NULL;
int (*polarssl_mutex_free)( threading_mutex_t * ) = NULL;
int (*polarssl_mutex_lock)( threading_mutex_t * ) = NULL;
int (*polarssl_mutex_unlock)( threading_mutex_t * ) = NULL;
int threading_set_own( int (*mutex_init)( threading_mutex_t * ),
int (*mutex_free)( threading_mutex_t * ),
int (*mutex_lock)( threading_mutex_t * ),
int (*mutex_unlock)( threading_mutex_t * ) )
{
polarssl_mutex_init = mutex_init;
polarssl_mutex_free = mutex_free;
polarssl_mutex_lock = mutex_lock;
polarssl_mutex_unlock = mutex_unlock;
return( 0 );
}
#endif /* POLARSSL_THREADING_ALT_C */
#endif /* POLARSSL_THREADING_C */

3
scripts/generate_errors.pl
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@ -11,7 +11,8 @@ my $error_format_file = $data_dir.'/error.fmt';
my @low_level_modules = ( "AES", "ASN1", "BLOWFISH", "CAMELLIA", "BIGNUM",
"BASE64", "XTEA", "PBKDF2", "OID",
"PADLOCK", "DES", "NET", "CTR_DRBG", "ENTROPY",
"MD2", "MD4", "MD5", "SHA1", "SHA256", "SHA512", "GCM" );
"MD2", "MD4", "MD5", "SHA1", "SHA256", "SHA512",
"GCM", "THREADING" );
my @high_level_modules = ( "PEM", "X509", "DHM", "RSA", "ECP", "MD", "CIPHER", "SSL",
"PK", "PKCS12", "PKCS5" );