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Merge pull request #2931 from piotr-now/memory-info

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Avoid allocating 0-length buffers for PSK. Add memory debug information to ssl_client2.
This commit is contained in:
Jaeden Amero 2019-11-25 15:57:22 +00:00 committed by GitHub
commit 5f0ccd5a3c
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 52 additions and 14 deletions
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7
library/ssl_tls.c
View File

@ -9171,8 +9171,13 @@ int mbedtls_ssl_conf_psk( mbedtls_ssl_config *conf,
ssl_conf_remove_psk( conf );
/* Check and set raw PSK */
if( psk == NULL || psk_len > MBEDTLS_PSK_MAX_LEN )
if( psk == NULL )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
if( psk_len == 0 )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
if( psk_len > MBEDTLS_PSK_MAX_LEN )
return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
if( ( conf->psk = mbedtls_calloc( 1, psk_len ) ) == NULL )
return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
conf->psk_len = psk_len;

40
programs/ssl/ssl_client2.c
View File

@ -54,6 +54,10 @@ int main( void )
}
#else
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#include "mbedtls/memory_buffer_alloc.h"
#endif
#include "mbedtls/net_sockets.h"
#include "mbedtls/ssl.h"
#include "mbedtls/entropy.h"
@ -73,6 +77,10 @@ int main( void )
#include <stdlib.h>
#include <string.h>
/* Size of memory to be allocated for the heap, when using the library's memory
* management and MBEDTLS_MEMORY_BUFFER_ALLOC_C is enabled. */
#define MEMORY_HEAP_SIZE 120000
#define MAX_REQUEST_SIZE 20000
#define MAX_REQUEST_SIZE_STR "20000"
@ -194,7 +202,8 @@ int main( void )
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
#define USAGE_PSK_RAW \
" psk=%%s default: \"\" (in hex, without 0x)\n" \
" psk=%%s default: \"\" (disabled)\n" \
" The PSK values are in hex, without 0x.\n" \
" psk_identity=%%s default: \"Client_identity\"\n"
#if defined(MBEDTLS_USE_PSA_CRYPTO)
#define USAGE_PSK_SLOT \
@ -1129,6 +1138,11 @@ int main( int argc, char *argv[] )
#if defined(MBEDTLS_SSL_ALPN)
const char *alpn_list[ALPN_LIST_SIZE];
#endif
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
unsigned char alloc_buf[MEMORY_HEAP_SIZE];
#endif
#if defined(MBEDTLS_ECP_C)
mbedtls_ecp_group_id curve_list[CURVE_LIST_SIZE];
const mbedtls_ecp_curve_info *curve_cur;
@ -1178,6 +1192,10 @@ int main( int argc, char *argv[] )
eap_tls_keys eap_tls_keying;
#endif
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
#endif
/*
* Make sure memory references are valid.
*/
@ -2374,14 +2392,17 @@ int main( int argc, char *argv[] )
}
else
#endif /* MBEDTLS_USE_PSA_CRYPTO */
if( ( ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len,
(const unsigned char *) opt.psk_identity,
strlen( opt.psk_identity ) ) ) != 0 )
if( psk_len > 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_psk returned %d\n\n",
ret );
ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len,
(const unsigned char *) opt.psk_identity,
strlen( opt.psk_identity ) );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_psk returned %d\n\n", ret );
goto exit;
}
}
#endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
if( opt.min_version != DFL_MIN_VERSION )
@ -3287,6 +3308,13 @@ exit:
#endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED &&
MBEDTLS_USE_PSA_CRYPTO */
#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
#if defined(MBEDTLS_MEMORY_DEBUG)
mbedtls_memory_buffer_alloc_status();
#endif
mbedtls_memory_buffer_alloc_free();
#endif
#if defined(_WIN32)
mbedtls_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();

11
programs/ssl/ssl_server2.c
View File

@ -259,7 +259,8 @@ int main( void )
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
#define USAGE_PSK_RAW \
" psk=%%s default: \"\" (in hex, without 0x)\n" \
" psk=%%s default: \"\" (disabled)\n" \
" The PSK values are in hex, without 0x.\n" \
" psk_list=%%s default: \"\"\n" \
" A list of (PSK identity, PSK value) pairs.\n" \
" The PSK values are in hex, without 0x.\n" \
@ -3364,14 +3365,18 @@ int main( int argc, char *argv[] )
}
else
#endif /* MBEDTLS_USE_PSA_CRYPTO */
if( ( ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len,
if( psk_len > 0 )
{
ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len,
(const unsigned char *) opt.psk_identity,
strlen( opt.psk_identity ) ) ) != 0 )
strlen( opt.psk_identity ) );
if( ret != 0 )
{
mbedtls_printf( " failed\n mbedtls_ssl_conf_psk returned -0x%04X\n\n", - ret );
goto exit;
}
}
}
if( opt.psk_list != NULL )
{