Abstracts away time()/stdlib.h into platform
Substitutes time() into a configurable platform interface to allow it to be
easily substituted.
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index a617d06..3c3d9ca 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -152,6 +152,7 @@
* platform function
*/
//#define MBEDTLS_PLATFORM_EXIT_ALT
+//#define MBEDTLS_PLATFORM_TIME_ALT
//#define MBEDTLS_PLATFORM_FPRINTF_ALT
//#define MBEDTLS_PLATFORM_PRINTF_ALT
//#define MBEDTLS_PLATFORM_SNPRINTF_ALT
@@ -2465,6 +2466,7 @@
//#define MBEDTLS_PLATFORM_STD_CALLOC calloc /**< Default allocator to use, can be undefined */
//#define MBEDTLS_PLATFORM_STD_FREE free /**< Default free to use, can be undefined */
//#define MBEDTLS_PLATFORM_STD_EXIT exit /**< Default exit to use, can be undefined */
+//#define MBEDTLS_PLATFORM_STD_TIME time /**< Default time to use, can be undefined */
//#define MBEDTLS_PLATFORM_STD_FPRINTF fprintf /**< Default fprintf to use, can be undefined */
//#define MBEDTLS_PLATFORM_STD_PRINTF printf /**< Default printf to use, can be undefined */
/* Note: your snprintf must correclty zero-terminate the buffer! */
diff --git a/include/mbedtls/platform.h b/include/mbedtls/platform.h
index 1371ff1..7922e8c 100644
--- a/include/mbedtls/platform.h
+++ b/include/mbedtls/platform.h
@@ -66,6 +66,9 @@
#if !defined(MBEDTLS_PLATFORM_STD_EXIT)
#define MBEDTLS_PLATFORM_STD_EXIT exit /**< Default exit to use */
#endif
+#if !defined(MBEDTLS_PLATFORM_STD_TIME)
+#define MBEDTLS_PLATFORM_STD_TIME time /**< Default time to use */
+#endif
#if !defined(MBEDTLS_PLATFORM_STD_EXIT_SUCCESS)
#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS EXIT_SUCCESS /**< Default exit value to use */
#endif
@@ -227,6 +230,37 @@
#define MBEDTLS_EXIT_FAILURE 1
#endif
+/*
+ * The time_t datatype
+ */
+#if defined(MBEDTLS_PLATFORM_TIME_T_MACRO)
+#define mbedtls_time_t MBEDTLS_PLATFORM_TIME_T_MACRO
+#else
+#define mbedtls_time_t time_t
+#endif /* MBEDTLS_PLATFORM_TIME_T_MACRO */
+
+/*
+ * The function pointers for time
+ */
+#if defined(MBEDTLS_PLATFORM_TIME_ALT)
+extern time_t (*mbedtls_time)( mbedtls_time_t* time );
+
+/**
+ * \brief Set your own time function pointer
+ *
+ * \param time_func the time function implementation
+ *
+ * \return 0
+ */
+int mbedtls_platform_set_time( mbedtls_time_t (*time_func)( mbedtls_time_t time ) );
+#else
+#if defined(MBEDTLS_PLATFORM_TIME_MACRO)
+#define mbedtls_time MBEDTLS_PLATFORM_TIME_MACRO
+#else
+#define mbedtls_time time
+#endif /* MBEDTLS_PLATFORM_TIME_MACRO */
+#endif /* MBEDTLS_PLATFORM_TIME_ALT */
+
#ifdef __cplusplus
}
#endif
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 3e05f3f..67c62b7 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -542,7 +542,7 @@
struct mbedtls_ssl_session
{
#if defined(MBEDTLS_HAVE_TIME)
- time_t start; /*!< starting time */
+ mbedtls_time_t start; /*!< starting time */
#endif
int ciphersuite; /*!< chosen ciphersuite */
int compression; /*!< chosen compression */
diff --git a/include/mbedtls/ssl_cache.h b/include/mbedtls/ssl_cache.h
index 1155924..3734bb7 100644
--- a/include/mbedtls/ssl_cache.h
+++ b/include/mbedtls/ssl_cache.h
@@ -60,7 +60,7 @@
struct mbedtls_ssl_cache_entry
{
#if defined(MBEDTLS_HAVE_TIME)
- time_t timestamp; /*!< entry timestamp */
+ mbedtls_time_t timestamp; /*!< entry timestamp */
#endif
mbedtls_ssl_session session; /*!< entry session */
#if defined(MBEDTLS_X509_CRT_PARSE_C)
diff --git a/library/debug.c b/library/debug.c
index 4752ab1..a032478 100644
--- a/library/debug.c
+++ b/library/debug.c
@@ -27,21 +27,22 @@
#if defined(MBEDTLS_DEBUG_C)
-#include "mbedtls/debug.h"
-
-#include <stdarg.h>
-#include <stdio.h>
-#include <string.h>
-
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdlib.h>
#define mbedtls_calloc calloc
#define mbedtls_free free
+#define mbedtls_time_t time_t
#define mbedtls_snprintf snprintf
#endif
+#include "mbedtls/debug.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \
!defined(inline) && !defined(__cplusplus)
#define inline __inline
diff --git a/library/net.c b/library/net.c
index 3b78b6b..4142bc0 100644
--- a/library/net.c
+++ b/library/net.c
@@ -32,6 +32,13 @@
#error "This module only works on Unix and Windows, see MBEDTLS_NET_C in config.h"
#endif
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdlib.h>
+#define mbedtls_time_t time_t
+#endif
+
#include "mbedtls/net.h"
#include <string.h>
@@ -86,7 +93,6 @@
#define MSVC_INT_CAST
#endif
-#include <stdlib.h>
#include <stdio.h>
#include <time.h>
diff --git a/library/platform.c b/library/platform.c
index d634c62..e7ec0ad 100644
--- a/library/platform.c
+++ b/library/platform.c
@@ -190,4 +190,27 @@
}
#endif /* MBEDTLS_PLATFORM_EXIT_ALT */
+#if defined(MBEDTLS_PLATFORM_TIME_ALT)
+#if !defined(MBEDTLS_PLATFORM_STD_TIME)
+/*
+ * Make dummy function to prevent NULL pointer dereferences
+ */
+static mbedtls_time_t platform_time_uninit( mbedtls_time_t* timer )
+{
+ ((void) timer);
+ return( NULL );
+}
+
+#define MBEDTLS_PLATFORM_STD_TIME platform_time_uninit
+#endif /* !MBEDTLS_PLATFORM_STD_TIME */
+
+time_t (*mbedtls_time)( mbedtls_time_t* timer ) = MBEDTLS_PLATFORM_STD_TIME;
+
+int mbedtls_platform_set_exit( mbedtls_time_t (*time_func)( mbedtls_time_t timer ) )
+{
+ mbedtls_time = time_func;
+ return( 0 );
+}
+#endif /* MBEDTLS_PLATFORM_TIME_ALT */
+
#endif /* MBEDTLS_PLATFORM_C */
diff --git a/library/ssl_cache.c b/library/ssl_cache.c
index 711bc53..01c66ae 100644
--- a/library/ssl_cache.c
+++ b/library/ssl_cache.c
@@ -31,18 +31,20 @@
#if defined(MBEDTLS_SSL_CACHE_C)
-#include "mbedtls/ssl_cache.h"
-
-#include <string.h>
-
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdlib.h>
#define mbedtls_calloc calloc
-#define mbedtls_free free
+#define mbedtls_free free
+#define mbedtls_time time
+#define mbedtls_time_t time_t
#endif
+#include "mbedtls/ssl_cache.h"
+
+#include <string.h>
+
void mbedtls_ssl_cache_init( mbedtls_ssl_cache_context *cache )
{
memset( cache, 0, sizeof( mbedtls_ssl_cache_context ) );
@@ -59,7 +61,7 @@
{
int ret = 1;
#if defined(MBEDTLS_HAVE_TIME)
- time_t t = time( NULL );
+ mbedtls_time_t t = mbedtls_time( NULL );
#endif
mbedtls_ssl_cache_context *cache = (mbedtls_ssl_cache_context *) data;
mbedtls_ssl_cache_entry *cur, *entry;
@@ -138,7 +140,7 @@
{
int ret = 1;
#if defined(MBEDTLS_HAVE_TIME)
- time_t t = time( NULL ), oldest = 0;
+ mbedtls_time_t t = time( NULL ), oldest = 0;
mbedtls_ssl_cache_entry *old = NULL;
#endif
mbedtls_ssl_cache_context *cache = (mbedtls_ssl_cache_context *) data;
diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index 949b9ed..3546331 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -29,10 +29,16 @@
#if defined(MBEDTLS_SSL_TLS_C)
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdlib.h>
+#define mbedtls_time_t time_t
+#endif
+
#include "mbedtls/ssl_ciphersuites.h"
#include "mbedtls/ssl.h"
-// #include <stdlib.h>
#include <string.h>
/*
diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 7f5b94e..cd39db0 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -27,20 +27,22 @@
#if defined(MBEDTLS_SSL_CLI_C)
-#include "mbedtls/debug.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/ssl_internal.h"
-
-#include <string.h>
-
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdlib.h>
#define mbedtls_calloc calloc
-#define mbedtls_free free
+#define mbedtls_free free
+#define mbedtls_time time
+#define mbedtls_time_t time_t
#endif
+#include "mbedtls/debug.h"
+#include "mbedtls/ssl.h"
+#include "mbedtls/ssl_internal.h"
+
+#include <string.h>
+
#include <stdint.h>
#if defined(MBEDTLS_HAVE_TIME)
@@ -669,7 +671,7 @@
int ret;
unsigned char *p = ssl->handshake->randbytes;
#if defined(MBEDTLS_HAVE_TIME)
- time_t t;
+ mbedtls_time_t t;
#endif
/*
@@ -684,7 +686,7 @@
#endif
#if defined(MBEDTLS_HAVE_TIME)
- t = time( NULL );
+ t = mbedtls_time( NULL );
*p++ = (unsigned char)( t >> 24 );
*p++ = (unsigned char)( t >> 16 );
*p++ = (unsigned char)( t >> 8 );
@@ -1592,7 +1594,7 @@
ssl->state++;
ssl->handshake->resume = 0;
#if defined(MBEDTLS_HAVE_TIME)
- ssl->session_negotiate->start = time( NULL );
+ ssl->session_negotiate->start = mbedtls_time( NULL );
#endif
ssl->session_negotiate->ciphersuite = i;
ssl->session_negotiate->compression = comp;
diff --git a/library/ssl_cookie.c b/library/ssl_cookie.c
index 7e0c573..f241c86 100644
--- a/library/ssl_cookie.c
+++ b/library/ssl_cookie.c
@@ -31,16 +31,18 @@
#if defined(MBEDTLS_SSL_COOKIE_C)
-#include "mbedtls/ssl_cookie.h"
-#include "mbedtls/ssl_internal.h"
-
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#define mbedtls_calloc calloc
-#define mbedtls_free free
+#define mbedtls_free free
+#define mbedtls_time time
+#define mbedtls_time_t time_t
#endif
+#include "mbedtls/ssl_cookie.h"
+#include "mbedtls/ssl_internal.h"
+
#include <string.h>
/* Implementation that should never be optimized out by the compiler */
@@ -172,7 +174,7 @@
return( MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL );
#if defined(MBEDTLS_HAVE_TIME)
- t = (unsigned long) time( NULL );
+ t = (unsigned long) mbedtls_time( NULL );
#else
t = ctx->serial++;
#endif
@@ -242,7 +244,7 @@
return( -1 );
#if defined(MBEDTLS_HAVE_TIME)
- cur_time = (unsigned long) time( NULL );
+ cur_time = (unsigned long) mbedtls_time( NULL );
#else
cur_time = ctx->serial;
#endif
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 6bd0b59..9fc21a5 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -27,6 +27,16 @@
#if defined(MBEDTLS_SSL_SRV_C)
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdlib.h>
+#define mbedtls_calloc calloc
+#define mbedtls_free free
+#define mbedtls_time time
+#define mbedtls_time_t time_t
+#endif
+
#include "mbedtls/debug.h"
#include "mbedtls/ssl.h"
#include "mbedtls/ssl_internal.h"
@@ -37,14 +47,6 @@
#include "mbedtls/ecp.h"
#endif
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdlib.h>
-#define mbedtls_calloc calloc
-#define mbedtls_free free
-#endif
-
#if defined(MBEDTLS_HAVE_TIME)
#include <time.h>
#endif
@@ -2210,7 +2212,7 @@
static int ssl_write_server_hello( mbedtls_ssl_context *ssl )
{
#if defined(MBEDTLS_HAVE_TIME)
- time_t t;
+ mbedtls_time_t t;
#endif
int ret;
size_t olen, ext_len = 0, n;
@@ -2253,7 +2255,7 @@
buf[4], buf[5] ) );
#if defined(MBEDTLS_HAVE_TIME)
- t = time( NULL );
+ t = mbedtls_time( NULL );
*p++ = (unsigned char)( t >> 24 );
*p++ = (unsigned char)( t >> 16 );
*p++ = (unsigned char)( t >> 8 );
@@ -2302,7 +2304,7 @@
ssl->state++;
#if defined(MBEDTLS_HAVE_TIME)
- ssl->session_negotiate->start = time( NULL );
+ ssl->session_negotiate->start = mbedtls_time( NULL );
#endif
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
diff --git a/library/ssl_ticket.c b/library/ssl_ticket.c
index 0e27900..5d77403 100644
--- a/library/ssl_ticket.c
+++ b/library/ssl_ticket.c
@@ -27,16 +27,18 @@
#if defined(MBEDTLS_SSL_TICKET_C)
-#include "mbedtls/ssl_ticket.h"
-
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdlib.h>
#define mbedtls_calloc calloc
-#define mbedtls_free free
+#define mbedtls_free free
+#define mbedtls_time time
+#define mbedtls_time_t time_t
#endif
+#include "mbedtls/ssl_ticket.h"
+
#include <string.h>
/* Implementation that should never be optimized out by the compiler */
@@ -69,7 +71,7 @@
mbedtls_ssl_ticket_key *key = ctx->keys + index;
#if defined(MBEDTLS_HAVE_TIME)
- key->generation_time = (uint32_t) time( NULL );
+ key->generation_time = (uint32_t) mbedtls_time( NULL );
#endif
if( ( ret = ctx->f_rng( ctx->p_rng, key->name, sizeof( key->name ) ) ) != 0 )
@@ -98,7 +100,7 @@
#else
if( ctx->ticket_lifetime != 0 )
{
- uint32_t current_time = (uint32_t) time( NULL );
+ uint32_t current_time = (uint32_t) mbedtls_time( NULL );
uint32_t key_time = ctx->keys[ctx->active].generation_time;
if( current_time > key_time &&
@@ -451,7 +453,7 @@
#if defined(MBEDTLS_HAVE_TIME)
{
/* Check for expiration */
- time_t current_time = time( NULL );
+ mbedtls_time_t current_time = mbedtls_time( NULL );
if( current_time < session->start ||
(uint32_t)( current_time - session->start ) > ctx->ticket_lifetime )
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 1c44b7d..19cc357 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -35,6 +35,15 @@
#if defined(MBEDTLS_SSL_TLS_C)
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdlib.h>
+#define mbedtls_calloc calloc
+#define mbedtls_free free
+#define mbedtls_time_t time_t
+#endif
+
#include "mbedtls/debug.h"
#include "mbedtls/ssl.h"
#include "mbedtls/ssl_internal.h"
@@ -46,14 +55,6 @@
#include "mbedtls/oid.h"
#endif
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdlib.h>
-#define mbedtls_calloc calloc
-#define mbedtls_free free
-#endif
-
/* Implementation that should never be optimized out by the compiler */
static void mbedtls_zeroize( void *v, size_t n ) {
volatile unsigned char *p = v; while( n-- ) *p++ = 0;
diff --git a/library/x509.c b/library/x509.c
index ffc3d6c..a0df817 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -53,10 +53,12 @@
#else
#include <stdio.h>
#include <stdlib.h>
-#define mbedtls_free free
+#define mbedtls_free free
#define mbedtls_calloc calloc
-#define mbedtls_printf printf
-#define mbedtls_snprintf snprintf
+#define mbedtls_time time
+#define mbedtls_time_t time_t
+#define mbedtls_printf printf
+#define mbedtls_snprintf snprintf
#endif
#if defined(_WIN32) && !defined(EFIX64) && !defined(EFI32)
@@ -843,7 +845,7 @@
static int x509_get_current_time( mbedtls_x509_time *now )
{
struct tm *lt;
- time_t tt;
+ mbedtls_time_t tt;
int ret = 0;
#if defined(MBEDTLS_THREADING_C)
@@ -851,7 +853,7 @@
return( MBEDTLS_ERR_THREADING_MUTEX_ERROR );
#endif
- tt = time( NULL );
+ tt = mbedtls_time( NULL );
lt = gmtime( &tt );
if( lt == NULL )
diff --git a/programs/ssl/mini_client.c b/programs/ssl/mini_client.c
index 26082ef..d3954c5 100644
--- a/programs/ssl/mini_client.c
+++ b/programs/ssl/mini_client.c
@@ -43,12 +43,14 @@
#if !defined(MBEDTLS_CTR_DRBG_C) || !defined(MBEDTLS_ENTROPY_C) || \
!defined(MBEDTLS_NET_C) || !defined(MBEDTLS_SSL_CLI_C) || \
!defined(UNIX)
+
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
#include <stdio.h>
#define mbedtls_printf printf
#endif
+
int main( void )
{
mbedtls_printf( "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_ENTROPY_C and/or "
@@ -58,6 +60,15 @@
}
#else
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdlib.h>
+#define mbedtls_time_t time_t
+#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
+#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
+#endif
+
#include <string.h>
#include "mbedtls/net.h"
