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