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author | Adam Harrison <adamdharrison@gmail.com> | 2023-07-06 06:37:41 -0400 |
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committer | Adam Harrison <adamdharrison@gmail.com> | 2023-07-06 06:37:41 -0400 |
commit | 9db10386430479067795bec66bb26343ff176ded (patch) | |
tree | 5ad0cf95abde7cf03afaf8f70af8549d46b09a46 /lib/mbedtls-2.27.0/library/ssl_cookie.c | |
parent | 57092d80cb07fa1a84873769fa92165426196054 (diff) | |
download | lite-xl-plugin-manager-9db10386430479067795bec66bb26343ff176ded.tar.gz lite-xl-plugin-manager-9db10386430479067795bec66bb26343ff176ded.zip |
Removed old mbedtls, replacing with submodule.
Diffstat (limited to 'lib/mbedtls-2.27.0/library/ssl_cookie.c')
-rw-r--r-- | lib/mbedtls-2.27.0/library/ssl_cookie.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/lib/mbedtls-2.27.0/library/ssl_cookie.c b/lib/mbedtls-2.27.0/library/ssl_cookie.c deleted file mode 100644 index 69d1b32..0000000 --- a/lib/mbedtls-2.27.0/library/ssl_cookie.c +++ /dev/null @@ -1,249 +0,0 @@ -/* - * DTLS cookie callbacks implementation - * - * Copyright The Mbed TLS Contributors - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may - * not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/* - * These session callbacks use a simple chained list - * to store and retrieve the session information. - */ - -#include "common.h" - -#if defined(MBEDTLS_SSL_COOKIE_C) - -#if defined(MBEDTLS_PLATFORM_C) -#include "mbedtls/platform.h" -#else -#define mbedtls_calloc calloc -#define mbedtls_free free -#endif - -#include "mbedtls/ssl_cookie.h" -#include "mbedtls/ssl_internal.h" -#include "mbedtls/error.h" -#include "mbedtls/platform_util.h" - -#include <string.h> - -/* - * If DTLS is in use, then at least one of SHA-1, SHA-256, SHA-512 is - * available. Try SHA-256 first, 512 wastes resources since we need to stay - * with max 32 bytes of cookie for DTLS 1.0 - */ -#if defined(MBEDTLS_SHA256_C) -#define COOKIE_MD MBEDTLS_MD_SHA224 -#define COOKIE_MD_OUTLEN 32 -#define COOKIE_HMAC_LEN 28 -#elif defined(MBEDTLS_SHA512_C) -#define COOKIE_MD MBEDTLS_MD_SHA384 -#define COOKIE_MD_OUTLEN 48 -#define COOKIE_HMAC_LEN 28 -#elif defined(MBEDTLS_SHA1_C) -#define COOKIE_MD MBEDTLS_MD_SHA1 -#define COOKIE_MD_OUTLEN 20 -#define COOKIE_HMAC_LEN 20 -#else -#error "DTLS hello verify needs SHA-1 or SHA-2" -#endif - -/* - * Cookies are formed of a 4-bytes timestamp (or serial number) and - * an HMAC of timestemp and client ID. - */ -#define COOKIE_LEN ( 4 + COOKIE_HMAC_LEN ) - -void mbedtls_ssl_cookie_init( mbedtls_ssl_cookie_ctx *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 ); -#endif -} - -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 ) -{ - mbedtls_md_free( &ctx->hmac_ctx ); - -#if defined(MBEDTLS_THREADING_C) - mbedtls_mutex_free( &ctx->mutex ); -#endif - - 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 ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - unsigned char key[COOKIE_MD_OUTLEN]; - - 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_hmac_starts( &ctx->hmac_ctx, key, sizeof( key ) ); - if( ret != 0 ) - return( ret ); - - mbedtls_platform_zeroize( key, sizeof( key ) ); - - return( 0 ); -} - -/* - * Generate the HMAC part of a cookie - */ -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 ); - - 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 ); - *p += COOKIE_HMAC_LEN; - - 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 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 ); - - MBEDTLS_SSL_CHK_BUF_PTR( *p, end, COOKIE_LEN ); - -#if defined(MBEDTLS_HAVE_TIME) - t = (unsigned long) mbedtls_time( NULL ); -#else - t = ctx->serial++; -#endif - - (*p)[0] = (unsigned char)( t >> 24 ); - (*p)[1] = (unsigned char)( t >> 16 ); - (*p)[2] = (unsigned char)( t >> 8 ); - (*p)[3] = (unsigned char)( t ); - *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 ) ); -#endif - - 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 ) ); -#endif - - 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 ) -{ - unsigned char ref_hmac[COOKIE_HMAC_LEN]; - int ret = 0; - unsigned char *p = ref_hmac; - 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( 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 ) ); -#endif - - 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 ) - return( MBEDTLS_ERROR_ADD( MBEDTLS_ERR_SSL_INTERNAL_ERROR, - MBEDTLS_ERR_THREADING_MUTEX_ERROR ) ); -#endif - - if( ret != 0 ) - return( ret ); - - if( mbedtls_ssl_safer_memcmp( cookie + 4, ref_hmac, sizeof( ref_hmac ) ) != 0 ) - return( -1 ); - -#if defined(MBEDTLS_HAVE_TIME) - 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] ); - - if( ctx->timeout != 0 && cur_time - cookie_time > ctx->timeout ) - return( -1 ); - - return( 0 ); -} -#endif /* MBEDTLS_SSL_COOKIE_C */ |