diff options
Diffstat (limited to 'thirdparty/mbedtls/library/ssl_cookie.c')
| -rw-r--r-- | thirdparty/mbedtls/library/ssl_cookie.c | 163 |
1 files changed, 85 insertions, 78 deletions
diff --git a/thirdparty/mbedtls/library/ssl_cookie.c b/thirdparty/mbedtls/library/ssl_cookie.c index f12f28e849..1ac9c41760 100644 --- a/thirdparty/mbedtls/library/ssl_cookie.c +++ b/thirdparty/mbedtls/library/ssl_cookie.c @@ -60,105 +60,108 @@ * Cookies are formed of a 4-bytes timestamp (or serial number) and * an HMAC of timestamp and client ID. */ -#define COOKIE_LEN ( 4 + COOKIE_HMAC_LEN ) +#define COOKIE_LEN (4 + COOKIE_HMAC_LEN) -void mbedtls_ssl_cookie_init( mbedtls_ssl_cookie_ctx *ctx ) +void mbedtls_ssl_cookie_init(mbedtls_ssl_cookie_ctx *ctx) { - mbedtls_md_init( &ctx->hmac_ctx ); + mbedtls_md_init(&ctx->hmac_ctx); #if !defined(MBEDTLS_HAVE_TIME) ctx->serial = 0; #endif ctx->timeout = MBEDTLS_SSL_COOKIE_TIMEOUT; #if defined(MBEDTLS_THREADING_C) - mbedtls_mutex_init( &ctx->mutex ); + mbedtls_mutex_init(&ctx->mutex); #endif } -void mbedtls_ssl_cookie_set_timeout( mbedtls_ssl_cookie_ctx *ctx, unsigned long delay ) +void mbedtls_ssl_cookie_set_timeout(mbedtls_ssl_cookie_ctx *ctx, unsigned long delay) { ctx->timeout = delay; } -void mbedtls_ssl_cookie_free( mbedtls_ssl_cookie_ctx *ctx ) +void mbedtls_ssl_cookie_free(mbedtls_ssl_cookie_ctx *ctx) { - mbedtls_md_free( &ctx->hmac_ctx ); + mbedtls_md_free(&ctx->hmac_ctx); #if defined(MBEDTLS_THREADING_C) - mbedtls_mutex_free( &ctx->mutex ); + mbedtls_mutex_free(&ctx->mutex); #endif - mbedtls_platform_zeroize( ctx, sizeof( mbedtls_ssl_cookie_ctx ) ); + mbedtls_platform_zeroize(ctx, sizeof(mbedtls_ssl_cookie_ctx)); } -int mbedtls_ssl_cookie_setup( mbedtls_ssl_cookie_ctx *ctx, - int (*f_rng)(void *, unsigned char *, size_t), - void *p_rng ) +int mbedtls_ssl_cookie_setup(mbedtls_ssl_cookie_ctx *ctx, + int (*f_rng)(void *, unsigned char *, size_t), + void *p_rng) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; unsigned char key[COOKIE_MD_OUTLEN]; - if( ( ret = f_rng( p_rng, key, sizeof( key ) ) ) != 0 ) - return( ret ); + if ((ret = f_rng(p_rng, key, sizeof(key))) != 0) { + return ret; + } - ret = mbedtls_md_setup( &ctx->hmac_ctx, mbedtls_md_info_from_type( COOKIE_MD ), 1 ); - if( ret != 0 ) - return( ret ); + ret = mbedtls_md_setup(&ctx->hmac_ctx, mbedtls_md_info_from_type(COOKIE_MD), 1); + if (ret != 0) { + return ret; + } - ret = mbedtls_md_hmac_starts( &ctx->hmac_ctx, key, sizeof( key ) ); - if( ret != 0 ) - return( ret ); + ret = mbedtls_md_hmac_starts(&ctx->hmac_ctx, key, sizeof(key)); + if (ret != 0) { + return ret; + } - mbedtls_platform_zeroize( key, sizeof( key ) ); + mbedtls_platform_zeroize(key, sizeof(key)); - return( 0 ); + return 0; } /* * Generate the HMAC part of a cookie */ MBEDTLS_CHECK_RETURN_CRITICAL -static int ssl_cookie_hmac( mbedtls_md_context_t *hmac_ctx, - const unsigned char time[4], - unsigned char **p, unsigned char *end, - const unsigned char *cli_id, size_t cli_id_len ) +static int ssl_cookie_hmac(mbedtls_md_context_t *hmac_ctx, + const unsigned char time[4], + unsigned char **p, unsigned char *end, + const unsigned char *cli_id, size_t cli_id_len) { unsigned char hmac_out[COOKIE_MD_OUTLEN]; - MBEDTLS_SSL_CHK_BUF_PTR( *p, end, COOKIE_HMAC_LEN ); + MBEDTLS_SSL_CHK_BUF_PTR(*p, end, COOKIE_HMAC_LEN); - if( mbedtls_md_hmac_reset( hmac_ctx ) != 0 || - mbedtls_md_hmac_update( hmac_ctx, time, 4 ) != 0 || - mbedtls_md_hmac_update( hmac_ctx, cli_id, cli_id_len ) != 0 || - mbedtls_md_hmac_finish( hmac_ctx, hmac_out ) != 0 ) - { - return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); + if (mbedtls_md_hmac_reset(hmac_ctx) != 0 || + mbedtls_md_hmac_update(hmac_ctx, time, 4) != 0 || + mbedtls_md_hmac_update(hmac_ctx, cli_id, cli_id_len) != 0 || + mbedtls_md_hmac_finish(hmac_ctx, hmac_out) != 0) { + return MBEDTLS_ERR_SSL_INTERNAL_ERROR; } - memcpy( *p, hmac_out, COOKIE_HMAC_LEN ); + memcpy(*p, hmac_out, COOKIE_HMAC_LEN); *p += COOKIE_HMAC_LEN; - return( 0 ); + return 0; } /* * Generate cookie for DTLS ClientHello verification */ -int mbedtls_ssl_cookie_write( void *p_ctx, - unsigned char **p, unsigned char *end, - const unsigned char *cli_id, size_t cli_id_len ) +int mbedtls_ssl_cookie_write(void *p_ctx, + unsigned char **p, unsigned char *end, + const unsigned char *cli_id, size_t cli_id_len) { int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; mbedtls_ssl_cookie_ctx *ctx = (mbedtls_ssl_cookie_ctx *) p_ctx; unsigned long t; - if( ctx == NULL || cli_id == NULL ) - return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); + if (ctx == NULL || cli_id == NULL) { + return MBEDTLS_ERR_SSL_BAD_INPUT_DATA; + } - MBEDTLS_SSL_CHK_BUF_PTR( *p, end, COOKIE_LEN ); + MBEDTLS_SSL_CHK_BUF_PTR(*p, end, COOKIE_LEN); #if defined(MBEDTLS_HAVE_TIME) - t = (unsigned long) mbedtls_time( NULL ); + t = (unsigned long) mbedtls_time(NULL); #else t = ctx->serial++; #endif @@ -167,28 +170,30 @@ int mbedtls_ssl_cookie_write( void *p_ctx, *p += 4; #if defined(MBEDTLS_THREADING_C) - if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 ) - return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_SSL_INTERNAL_ERROR, ret ) ); + if ((ret = mbedtls_mutex_lock(&ctx->mutex)) != 0) { + return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_SSL_INTERNAL_ERROR, ret); + } #endif - ret = ssl_cookie_hmac( &ctx->hmac_ctx, *p - 4, - p, end, cli_id, cli_id_len ); + ret = ssl_cookie_hmac(&ctx->hmac_ctx, *p - 4, + p, end, cli_id, cli_id_len); #if defined(MBEDTLS_THREADING_C) - if( mbedtls_mutex_unlock( &ctx->mutex ) != 0 ) - return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_SSL_INTERNAL_ERROR, - MBEDTLS_ERR_THREADING_MUTEX_ERROR ) ); + if (mbedtls_mutex_unlock(&ctx->mutex) != 0) { + return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_SSL_INTERNAL_ERROR, + MBEDTLS_ERR_THREADING_MUTEX_ERROR); + } #endif - return( ret ); + return ret; } /* * Check a cookie */ -int mbedtls_ssl_cookie_check( void *p_ctx, - const unsigned char *cookie, size_t cookie_len, - const unsigned char *cli_id, size_t cli_id_len ) +int mbedtls_ssl_cookie_check(void *p_ctx, + const unsigned char *cookie, size_t cookie_len, + const unsigned char *cli_id, size_t cli_id_len) { unsigned char ref_hmac[COOKIE_HMAC_LEN]; int ret = 0; @@ -196,58 +201,60 @@ int mbedtls_ssl_cookie_check( void *p_ctx, mbedtls_ssl_cookie_ctx *ctx = (mbedtls_ssl_cookie_ctx *) p_ctx; unsigned long cur_time, cookie_time; - if( ctx == NULL || cli_id == NULL ) - return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); + if (ctx == NULL || cli_id == NULL) { + return MBEDTLS_ERR_SSL_BAD_INPUT_DATA; + } - if( cookie_len != COOKIE_LEN ) - return( -1 ); + if (cookie_len != COOKIE_LEN) { + return -1; + } #if defined(MBEDTLS_THREADING_C) - if( ( ret = mbedtls_mutex_lock( &ctx->mutex ) ) != 0 ) - return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_SSL_INTERNAL_ERROR, ret ) ); + if ((ret = mbedtls_mutex_lock(&ctx->mutex)) != 0) { + return MBEDTLS_ERROR_ADD(MBEDTLS_ERR_SSL_INTERNAL_ERROR, ret); + } #endif - if( ssl_cookie_hmac( &ctx->hmac_ctx, cookie, - &p, p + sizeof( ref_hmac ), - cli_id, cli_id_len ) != 0 ) + if (ssl_cookie_hmac(&ctx->hmac_ctx, cookie, + &p, p + sizeof(ref_hmac), + cli_id, cli_id_len) != 0) { ret = -1; + } #if defined(MBEDTLS_THREADING_C) - if( mbedtls_mutex_unlock( &ctx->mutex ) != 0 ) - { - ret = MBEDTLS_ERROR_ADD( MBEDTLS_ERR_SSL_INTERNAL_ERROR, - MBEDTLS_ERR_THREADING_MUTEX_ERROR ); + if (mbedtls_mutex_unlock(&ctx->mutex) != 0) { + ret = MBEDTLS_ERROR_ADD(MBEDTLS_ERR_SSL_INTERNAL_ERROR, + MBEDTLS_ERR_THREADING_MUTEX_ERROR); } #endif - if( ret != 0 ) + if (ret != 0) { goto exit; + } - if( mbedtls_ct_memcmp( cookie + 4, ref_hmac, sizeof( ref_hmac ) ) != 0 ) - { + if (mbedtls_ct_memcmp(cookie + 4, ref_hmac, sizeof(ref_hmac)) != 0) { ret = -1; goto exit; } #if defined(MBEDTLS_HAVE_TIME) - cur_time = (unsigned long) mbedtls_time( NULL ); + cur_time = (unsigned long) mbedtls_time(NULL); #else cur_time = ctx->serial; #endif - cookie_time = ( (unsigned long) cookie[0] << 24 ) | - ( (unsigned long) cookie[1] << 16 ) | - ( (unsigned long) cookie[2] << 8 ) | - ( (unsigned long) cookie[3] ); + cookie_time = ((unsigned long) cookie[0] << 24) | + ((unsigned long) cookie[1] << 16) | + ((unsigned long) cookie[2] << 8) | + ((unsigned long) cookie[3]); - if( ctx->timeout != 0 && cur_time - cookie_time > ctx->timeout ) - { + if (ctx->timeout != 0 && cur_time - cookie_time > ctx->timeout) { ret = -1; goto exit; } exit: - mbedtls_platform_zeroize( ref_hmac, sizeof( ref_hmac ) ); - return( ret ); + mbedtls_platform_zeroize(ref_hmac, sizeof(ref_hmac)); + return ret; } #endif /* MBEDTLS_SSL_COOKIE_C */ |