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dtlsv1listentest.c
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dtlsv1listentest.c
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/*
* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (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>
#include "internal/nelem.h"
#include "testutil.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 */
};
typedef 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;
} tests;
static tests 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;
}
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;
}