358 lines
12 KiB
C
358 lines
12 KiB
C
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/*
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* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <string.h>
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#include <openssl/ssl.h>
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include <openssl/conf.h>
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#include "internal/nelem.h"
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#include "testutil.h"
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#ifndef OPENSSL_NO_SOCK
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/* Just a ClientHello without a cookie */
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static const unsigned char clienthello_nocookie[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x3A, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x2E, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x2E, /* Fragment length */
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0xFE, 0xFD, /* DTLSv1.2 */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00, /* Session id len */
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0x00, /* Cookie len */
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0x00, 0x04, /* Ciphersuites len */
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0x00, 0x2f, /* AES128-SHA */
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0x00, 0xff, /* Empty reneg info SCSV */
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0x01, /* Compression methods len */
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0x00, /* Null compression */
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0x00, 0x00 /* Extensions len */
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};
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/* First fragment of a ClientHello without a cookie */
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static const unsigned char clienthello_nocookie_frag[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x30, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x2E, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x24, /* Fragment length */
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0xFE, 0xFD, /* DTLSv1.2 */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00, /* Session id len */
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0x00 /* Cookie len */
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};
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/* First fragment of a ClientHello which is too short */
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static const unsigned char clienthello_nocookie_short[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x2F, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x2E, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x23, /* Fragment length */
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0xFE, 0xFD, /* DTLSv1.2 */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00 /* Session id len */
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};
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/* Second fragment of a ClientHello */
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static const unsigned char clienthello_2ndfrag[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x38, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x2E, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x02, /* Fragment offset */
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0x00, 0x00, 0x2C, /* Fragment length */
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/* Version skipped - sent in first fragment */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00, /* Session id len */
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0x00, /* Cookie len */
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0x00, 0x04, /* Ciphersuites len */
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0x00, 0x2f, /* AES128-SHA */
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0x00, 0xff, /* Empty reneg info SCSV */
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0x01, /* Compression methods len */
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0x00, /* Null compression */
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0x00, 0x00 /* Extensions len */
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};
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/* A ClientHello with a good cookie */
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static const unsigned char clienthello_cookie[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x4E, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x42, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x42, /* Fragment length */
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0xFE, 0xFD, /* DTLSv1.2 */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00, /* Session id len */
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0x14, /* Cookie len */
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0x00, 0x01, 0x02, 0x03, 0x04, 005, 0x06, 007, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
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0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, /* Cookie */
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0x00, 0x04, /* Ciphersuites len */
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0x00, 0x2f, /* AES128-SHA */
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0x00, 0xff, /* Empty reneg info SCSV */
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0x01, /* Compression methods len */
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0x00, /* Null compression */
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0x00, 0x00 /* Extensions len */
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};
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/* A fragmented ClientHello with a good cookie */
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static const unsigned char clienthello_cookie_frag[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x44, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x42, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x38, /* Fragment length */
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0xFE, 0xFD, /* DTLSv1.2 */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00, /* Session id len */
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0x14, /* Cookie len */
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0x00, 0x01, 0x02, 0x03, 0x04, 005, 0x06, 007, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
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0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13 /* Cookie */
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};
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/* A ClientHello with a bad cookie */
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static const unsigned char clienthello_badcookie[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x4E, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x42, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x42, /* Fragment length */
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0xFE, 0xFD, /* DTLSv1.2 */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00, /* Session id len */
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0x14, /* Cookie len */
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0x01, 0x01, 0x02, 0x03, 0x04, 005, 0x06, 007, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
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0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, /* Cookie */
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0x00, 0x04, /* Ciphersuites len */
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0x00, 0x2f, /* AES128-SHA */
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0x00, 0xff, /* Empty reneg info SCSV */
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0x01, /* Compression methods len */
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0x00, /* Null compression */
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0x00, 0x00 /* Extensions len */
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};
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/* A fragmented ClientHello with the fragment boundary mid cookie */
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static const unsigned char clienthello_cookie_short[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x43, /* Record Length */
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0x01, /* ClientHello */
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0x00, 0x00, 0x42, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x37, /* Fragment length */
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0xFE, 0xFD, /* DTLSv1.2 */
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0xCA, 0x18, 0x9F, 0x76, 0xEC, 0x57, 0xCE, 0xE5, 0xB3, 0xAB, 0x79, 0x90,
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0xAD, 0xAC, 0x6E, 0xD1, 0x58, 0x35, 0x03, 0x97, 0x16, 0x10, 0x82, 0x56,
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0xD8, 0x55, 0xFF, 0xE1, 0x8A, 0xA3, 0x2E, 0xF6, /* Random */
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0x00, /* Session id len */
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0x14, /* Cookie len */
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0x00, 0x01, 0x02, 0x03, 0x04, 005, 0x06, 007, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
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0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12 /* Cookie */
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};
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/* Bad record - too short */
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static const unsigned char record_short[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* Record sequence number */
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};
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static const unsigned char verify[] = {
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0x16, /* Handshake */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x00, 0x00, /* Epoch */
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* Record sequence number */
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0x00, 0x23, /* Record Length */
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0x03, /* HelloVerifyRequest */
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0x00, 0x00, 0x17, /* Message length */
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0x00, 0x00, /* Message sequence */
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0x00, 0x00, 0x00, /* Fragment offset */
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0x00, 0x00, 0x17, /* Fragment length */
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0xFE, 0xFF, /* DTLSv1.0 */
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0x14, /* Cookie len */
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0x00, 0x01, 0x02, 0x03, 0x04, 005, 0x06, 007, 0x08, 0x09, 0x0A, 0x0B, 0x0C,
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0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13 /* Cookie */
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};
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typedef struct {
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const unsigned char *in;
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unsigned int inlen;
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/*
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* GOOD == positive return value from DTLSv1_listen, no output yet
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* VERIFY == 0 return value, HelloVerifyRequest sent
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* DROP == 0 return value, no output
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*/
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enum {GOOD, VERIFY, DROP} outtype;
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} tests;
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static tests testpackets[9] = {
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{ clienthello_nocookie, sizeof(clienthello_nocookie), VERIFY },
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{ clienthello_nocookie_frag, sizeof(clienthello_nocookie_frag), VERIFY },
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{ clienthello_nocookie_short, sizeof(clienthello_nocookie_short), DROP },
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{ clienthello_2ndfrag, sizeof(clienthello_2ndfrag), DROP },
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{ clienthello_cookie, sizeof(clienthello_cookie), GOOD },
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{ clienthello_cookie_frag, sizeof(clienthello_cookie_frag), GOOD },
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{ clienthello_badcookie, sizeof(clienthello_badcookie), VERIFY },
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{ clienthello_cookie_short, sizeof(clienthello_cookie_short), DROP },
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{ record_short, sizeof(record_short), DROP }
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};
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# define COOKIE_LEN 20
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static int cookie_gen(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
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{
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unsigned int i;
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for (i = 0; i < COOKIE_LEN; i++, cookie++)
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*cookie = i;
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*cookie_len = COOKIE_LEN;
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return 1;
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}
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static int cookie_verify(SSL *ssl, const unsigned char *cookie,
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unsigned int cookie_len)
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{
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unsigned int i;
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if (cookie_len != COOKIE_LEN)
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return 0;
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for (i = 0; i < COOKIE_LEN; i++, cookie++) {
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if (*cookie != i)
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return 0;
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}
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return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int dtls_listen_test(int i)
|
||
|
|
{
|
||
|
|
SSL_CTX *ctx = NULL;
|
||
|
|
SSL *ssl = NULL;
|
||
|
|
BIO *outbio = NULL;
|
||
|
|
BIO *inbio = NULL;
|
||
|
|
BIO_ADDR *peer = NULL;
|
||
|
|
tests *tp = &testpackets[i];
|
||
|
|
char *data;
|
||
|
|
long datalen;
|
||
|
|
int ret, success = 0;
|
||
|
|
|
||
|
|
if (!TEST_ptr(ctx = SSL_CTX_new(DTLS_server_method()))
|
||
|
|
|| !TEST_ptr(peer = BIO_ADDR_new()))
|
||
|
|
goto err;
|
||
|
|
SSL_CTX_set_cookie_generate_cb(ctx, cookie_gen);
|
||
|
|
SSL_CTX_set_cookie_verify_cb(ctx, cookie_verify);
|
||
|
|
|
||
|
|
/* Create an SSL object and set the BIO */
|
||
|
|
if (!TEST_ptr(ssl = SSL_new(ctx))
|
||
|
|
|| !TEST_ptr(outbio = BIO_new(BIO_s_mem())))
|
||
|
|
goto err;
|
||
|
|
SSL_set0_wbio(ssl, outbio);
|
||
|
|
|
||
|
|
/* Set Non-blocking IO behaviour */
|
||
|
|
if (!TEST_ptr(inbio = BIO_new_mem_buf((char *)tp->in, tp->inlen)))
|
||
|
|
goto err;
|
||
|
|
BIO_set_mem_eof_return(inbio, -1);
|
||
|
|
SSL_set0_rbio(ssl, inbio);
|
||
|
|
|
||
|
|
/* Process the incoming packet */
|
||
|
|
if (!TEST_int_ge(ret = DTLSv1_listen(ssl, peer), 0))
|
||
|
|
goto err;
|
||
|
|
datalen = BIO_get_mem_data(outbio, &data);
|
||
|
|
|
||
|
|
if (tp->outtype == VERIFY) {
|
||
|
|
if (!TEST_int_eq(ret, 0)
|
||
|
|
|| !TEST_mem_eq(data, datalen, verify, sizeof(verify)))
|
||
|
|
goto err;
|
||
|
|
} else if (datalen == 0) {
|
||
|
|
if (!TEST_true((ret == 0 && tp->outtype == DROP)
|
||
|
|
|| (ret == 1 && tp->outtype == GOOD)))
|
||
|
|
goto err;
|
||
|
|
} else {
|
||
|
|
TEST_info("Test %d: unexpected data output", i);
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
(void)BIO_reset(outbio);
|
||
|
|
inbio = NULL;
|
||
|
|
SSL_set0_rbio(ssl, NULL);
|
||
|
|
success = 1;
|
||
|
|
|
||
|
|
err:
|
||
|
|
/* Also frees up outbio */
|
||
|
|
SSL_free(ssl);
|
||
|
|
SSL_CTX_free(ctx);
|
||
|
|
BIO_free(inbio);
|
||
|
|
OPENSSL_free(peer);
|
||
|
|
return success;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int setup_tests(void)
|
||
|
|
{
|
||
|
|
#ifndef OPENSSL_NO_SOCK
|
||
|
|
ADD_ALL_TESTS(dtls_listen_test, (int)OSSL_NELEM(testpackets));
|
||
|
|
#endif
|
||
|
|
return 1;
|
||
|
|
}
|