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openssl/test/packettest.c
Emilia Kasper 062178678f Refactor ClientHello extension parsing 
1) Simplify code with better PACKET methods.

2) Make broken SNI parsing explicit. SNI was intended to be extensible
to new name types but RFC 4366 defined the syntax inextensibly, and
OpenSSL has never parsed SNI in a way that would allow adding a new name
type. RFC 6066 fixed the definition but due to broken implementations
being widespread, it appears impossible to ever extend SNI.

3) Annotate resumption behaviour. OpenSSL doesn't currently handle all
extensions correctly upon resumption. Annotate for further clean-up.

4) Send an alert on ALPN protocol mismatch.

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2016-03-03 13:53:26 +01:00

587 lines
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/*
* Written by Matt Caswell for the OpenSSL project.
*/
/* ====================================================================
* Copyright (c) 2015 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include "../ssl/packet_locl.h"
#define BUF_LEN 255
static int test_PACKET_remaining(unsigned char buf[BUF_LEN])
{
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| PACKET_remaining(&pkt) != BUF_LEN
|| !PACKET_forward(&pkt, BUF_LEN - 1)
|| PACKET_remaining(&pkt) != 1
|| !PACKET_forward(&pkt, 1)
|| PACKET_remaining(&pkt) != 0) {
fprintf(stderr, "test_PACKET_remaining() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_end(unsigned char buf[BUF_LEN])
{
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| PACKET_remaining(&pkt) != BUF_LEN
|| PACKET_end(&pkt) != buf + BUF_LEN
|| !PACKET_forward(&pkt, BUF_LEN - 1)
|| PACKET_end(&pkt) != buf + BUF_LEN
|| !PACKET_forward(&pkt, 1)
|| PACKET_end(&pkt) != buf + BUF_LEN) {
fprintf(stderr, "test_PACKET_end() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_1(unsigned char buf[BUF_LEN])
{
unsigned int i;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_get_1(&pkt, &i)
|| i != 0x02
|| !PACKET_forward(&pkt, BUF_LEN - 2)
|| !PACKET_get_1(&pkt, &i)
|| i != 0xfe
|| PACKET_get_1(&pkt, &i)) {
fprintf(stderr, "test_PACKET_get_1() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_4(unsigned char buf[BUF_LEN])
{
unsigned long i;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_get_4(&pkt, &i)
|| i != 0x08060402UL
|| !PACKET_forward(&pkt, BUF_LEN - 8)
|| !PACKET_get_4(&pkt, &i)
|| i != 0xfefcfaf8UL
|| PACKET_get_4(&pkt, &i)) {
fprintf(stderr, "test_PACKET_get_4() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_net_2(unsigned char buf[BUF_LEN])
{
unsigned int i;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_get_net_2(&pkt, &i)
|| i != 0x0204
|| !PACKET_forward(&pkt, BUF_LEN - 4)
|| !PACKET_get_net_2(&pkt, &i)
|| i != 0xfcfe
|| PACKET_get_net_2(&pkt, &i)) {
fprintf(stderr, "test_PACKET_get_net_2() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_net_3(unsigned char buf[BUF_LEN])
{
unsigned long i;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_get_net_3(&pkt, &i)
|| i != 0x020406UL
|| !PACKET_forward(&pkt, BUF_LEN - 6)
|| !PACKET_get_net_3(&pkt, &i)
|| i != 0xfafcfeUL
|| PACKET_get_net_3(&pkt, &i)) {
fprintf(stderr, "test_PACKET_get_net_3() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_net_4(unsigned char buf[BUF_LEN])
{
unsigned long i;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_get_net_4(&pkt, &i)
|| i != 0x02040608UL
|| !PACKET_forward(&pkt, BUF_LEN - 8)
|| !PACKET_get_net_4(&pkt, &i)
|| i != 0xf8fafcfeUL
|| PACKET_get_net_4(&pkt, &i)) {
fprintf(stderr, "test_PACKET_get_net_4() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_sub_packet(unsigned char buf[BUF_LEN])
{
PACKET pkt, subpkt;
unsigned long i;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_get_sub_packet(&pkt, &subpkt, 4)
|| !PACKET_get_net_4(&subpkt, &i)
|| i != 0x02040608UL
|| PACKET_remaining(&subpkt)
|| !PACKET_forward(&pkt, BUF_LEN - 8)
|| !PACKET_get_sub_packet(&pkt, &subpkt, 4)
|| !PACKET_get_net_4(&subpkt, &i)
|| i != 0xf8fafcfeUL
|| PACKET_remaining(&subpkt)
|| PACKET_get_sub_packet(&pkt, &subpkt, 4)) {
fprintf(stderr, "test_PACKET_get_sub_packet() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_bytes(unsigned char buf[BUF_LEN])
{
const unsigned char *bytes;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_get_bytes(&pkt, &bytes, 4)
|| bytes[0] != 2 || bytes[1] != 4
|| bytes[2] != 6 || bytes[3] != 8
|| PACKET_remaining(&pkt) != BUF_LEN -4
|| !PACKET_forward(&pkt, BUF_LEN - 8)
|| !PACKET_get_bytes(&pkt, &bytes, 4)
|| bytes[0] != 0xf8 || bytes[1] != 0xfa
|| bytes[2] != 0xfc || bytes[3] != 0xfe
|| PACKET_remaining(&pkt)) {
fprintf(stderr, "test_PACKET_get_bytes() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_copy_bytes(unsigned char buf[BUF_LEN])
{
unsigned char bytes[4];
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_copy_bytes(&pkt, bytes, 4)
|| bytes[0] != 2 || bytes[1] != 4
|| bytes[2] != 6 || bytes[3] != 8
|| PACKET_remaining(&pkt) != BUF_LEN - 4
|| !PACKET_forward(&pkt, BUF_LEN - 8)
|| !PACKET_copy_bytes(&pkt, bytes, 4)
|| bytes[0] != 0xf8 || bytes[1] != 0xfa
|| bytes[2] != 0xfc || bytes[3] != 0xfe
|| PACKET_remaining(&pkt)) {
fprintf(stderr, "test_PACKET_copy_bytes() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_copy_all(unsigned char buf[BUF_LEN])
{
unsigned char tmp[BUF_LEN];
PACKET pkt;
size_t len;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_copy_all(&pkt, tmp, BUF_LEN, &len)
|| len != BUF_LEN
|| memcmp(buf, tmp, BUF_LEN) != 0
|| PACKET_remaining(&pkt) != BUF_LEN
|| PACKET_copy_all(&pkt, tmp, BUF_LEN - 1, &len)) {
fprintf(stderr, "test_PACKET_copy_bytes() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_memdup(unsigned char buf[BUF_LEN])
{
unsigned char *data = NULL;
size_t len;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_memdup(&pkt, &data, &len)
|| len != BUF_LEN
|| memcmp(data, PACKET_data(&pkt), len)
|| !PACKET_forward(&pkt, 10)
|| !PACKET_memdup(&pkt, &data, &len)
|| len != BUF_LEN - 10
|| memcmp(data, PACKET_data(&pkt), len)) {
fprintf(stderr, "test_PACKET_memdup() failed\n");
OPENSSL_free(data);
return 0;
}
OPENSSL_free(data);
return 1;
}
static int test_PACKET_strndup()
{
char buf[10], buf2[10];
char *data = NULL;
PACKET pkt;
memset(buf, 'x', 10);
memset(buf2, 'y', 10);
buf2[5] = '\0';
if ( !PACKET_buf_init(&pkt, (unsigned char*)buf, 10)
|| !PACKET_strndup(&pkt, &data)
|| strlen(data) != 10
|| strncmp(data, buf, 10)
|| !PACKET_buf_init(&pkt, (unsigned char*)buf2, 10)
|| !PACKET_strndup(&pkt, &data)
|| strlen(data) != 5
|| strcmp(data, buf2)) {
fprintf(stderr, "test_PACKET_strndup failed\n");
OPENSSL_free(data);
return 0;
}
OPENSSL_free(data);
return 1;
}
static int test_PACKET_contains_zero_byte()
{
char buf[10], buf2[10];
PACKET pkt;
memset(buf, 'x', 10);
memset(buf2, 'y', 10);
buf2[5] = '\0';
if ( !PACKET_buf_init(&pkt, (unsigned char*)buf, 10)
|| PACKET_contains_zero_byte(&pkt)
|| !PACKET_buf_init(&pkt, (unsigned char*)buf2, 10)
|| !PACKET_contains_zero_byte(&pkt)) {
fprintf(stderr, "test_PACKET_contains_zero_byte failed\n");
return 0;
}
return 1;
}
static int test_PACKET_forward(unsigned char buf[BUF_LEN])
{
const unsigned char *byte;
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_forward(&pkt, 1)
|| !PACKET_get_bytes(&pkt, &byte, 1)
|| byte[0] != 4
|| !PACKET_forward(&pkt, BUF_LEN - 3)
|| !PACKET_get_bytes(&pkt, &byte, 1)
|| byte[0] != 0xfe) {
fprintf(stderr, "test_PACKET_forward() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_buf_init()
{
unsigned char buf[BUF_LEN];
PACKET pkt;
/* Also tests PACKET_remaining() */
if ( !PACKET_buf_init(&pkt, buf, 4)
|| PACKET_remaining(&pkt) != 4
|| !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| PACKET_remaining(&pkt) != BUF_LEN
|| PACKET_buf_init(&pkt, buf, -1)) {
fprintf(stderr, "test_PACKET_buf_init() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_null_init()
{
PACKET pkt;
PACKET_null_init(&pkt);
if ( PACKET_remaining(&pkt) != 0
|| PACKET_forward(&pkt, 1)) {
fprintf(stderr, "test_PACKET_null_init() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_equal(unsigned char buf[BUF_LEN])
{
PACKET pkt;
if ( !PACKET_buf_init(&pkt, buf, 4)
|| !PACKET_equal(&pkt, buf, 4)
|| PACKET_equal(&pkt, buf + 1, 4)
|| !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_equal(&pkt, buf, BUF_LEN)
|| PACKET_equal(&pkt, buf, BUF_LEN - 1)
|| PACKET_equal(&pkt, buf, BUF_LEN + 1)
|| PACKET_equal(&pkt, buf, 0)) {
fprintf(stderr, "test_PACKET_equal() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_length_prefixed_1()
{
unsigned char buf[BUF_LEN];
const size_t len = 16;
unsigned int i;
PACKET pkt, short_pkt, subpkt;
buf[0] = len;
for (i = 1; i < BUF_LEN; i++) {
buf[i] = (i * 2) & 0xff;
}
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_buf_init(&short_pkt, buf, len)
|| !PACKET_get_length_prefixed_1(&pkt, &subpkt)
|| PACKET_remaining(&subpkt) != len
|| !PACKET_get_net_2(&subpkt, &i)
|| i != 0x0204
|| PACKET_get_length_prefixed_1(&short_pkt, &subpkt)
|| PACKET_remaining(&short_pkt) != len) {
fprintf(stderr, "test_PACKET_get_length_prefixed_1() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_length_prefixed_2()
{
unsigned char buf[1024];
const size_t len = 516; /* 0x0204 */
unsigned int i;
PACKET pkt, short_pkt, subpkt;
for (i = 1; i <= 1024; i++) {
buf[i-1] = (i * 2) & 0xff;
}
if ( !PACKET_buf_init(&pkt, buf, 1024)
|| !PACKET_buf_init(&short_pkt, buf, len)
|| !PACKET_get_length_prefixed_2(&pkt, &subpkt)
|| PACKET_remaining(&subpkt) != len
|| !PACKET_get_net_2(&subpkt, &i)
|| i != 0x0608
|| PACKET_get_length_prefixed_2(&short_pkt, &subpkt)
|| PACKET_remaining(&short_pkt) != len) {
fprintf(stderr, "test_PACKET_get_length_prefixed_2() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_get_length_prefixed_3()
{
unsigned char buf[1024];
const size_t len = 516; /* 0x000204 */
unsigned int i;
PACKET pkt, short_pkt, subpkt;
for (i = 0; i < 1024; i++) {
buf[i] = (i * 2) & 0xff;
}
if ( !PACKET_buf_init(&pkt, buf, 1024)
|| !PACKET_buf_init(&short_pkt, buf, len)
|| !PACKET_get_length_prefixed_3(&pkt, &subpkt)
|| PACKET_remaining(&subpkt) != len
|| !PACKET_get_net_2(&subpkt, &i)
|| i != 0x0608
|| PACKET_get_length_prefixed_3(&short_pkt, &subpkt)
|| PACKET_remaining(&short_pkt) != len) {
fprintf(stderr, "test_PACKET_get_length_prefixed_3() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_as_length_prefixed_1()
{
unsigned char buf[BUF_LEN];
const size_t len = 16;
unsigned int i;
PACKET pkt, exact_pkt, subpkt;
buf[0] = len;
for (i = 1; i < BUF_LEN; i++) {
buf[i] = (i * 2) & 0xff;
}
if ( !PACKET_buf_init(&pkt, buf, BUF_LEN)
|| !PACKET_buf_init(&exact_pkt, buf, len + 1)
|| PACKET_as_length_prefixed_1(&pkt, &subpkt)
|| PACKET_remaining(&pkt) != BUF_LEN
|| !PACKET_as_length_prefixed_1(&exact_pkt, &subpkt)
|| PACKET_remaining(&exact_pkt) != 0
|| PACKET_remaining(&subpkt) != len) {
fprintf(stderr, "test_PACKET_as_length_prefixed_1() failed\n");
return 0;
}
return 1;
}
static int test_PACKET_as_length_prefixed_2()
{
unsigned char buf[1024];
const size_t len = 516; /* 0x0204 */
unsigned int i;
PACKET pkt, exact_pkt, subpkt;
for (i = 1; i <= 1024; i++) {
buf[i-1] = (i * 2) & 0xff;
}
if ( !PACKET_buf_init(&pkt, buf, 1024)
|| !PACKET_buf_init(&exact_pkt, buf, len + 2)
|| PACKET_as_length_prefixed_2(&pkt, &subpkt)
|| PACKET_remaining(&pkt) != 1024
|| !PACKET_as_length_prefixed_2(&exact_pkt, &subpkt)
|| PACKET_remaining(&exact_pkt) != 0
|| PACKET_remaining(&subpkt) != len) {
fprintf(stderr, "test_PACKET_as_length_prefixed_2() failed\n");
return 0;
}
return 1;
}
int main(int argc, char **argv)
{
unsigned char buf[BUF_LEN];
unsigned int i;
for (i=1; i<=BUF_LEN; i++) {
buf[i-1] = (i * 2) & 0xff;
}
i = 0;
if ( !test_PACKET_buf_init()
|| !test_PACKET_null_init()
|| !test_PACKET_remaining(buf)
|| !test_PACKET_end(buf)
|| !test_PACKET_equal(buf)
|| !test_PACKET_get_1(buf)
|| !test_PACKET_get_4(buf)
|| !test_PACKET_get_net_2(buf)
|| !test_PACKET_get_net_3(buf)
|| !test_PACKET_get_net_4(buf)
|| !test_PACKET_get_sub_packet(buf)
|| !test_PACKET_get_bytes(buf)
|| !test_PACKET_copy_bytes(buf)
|| !test_PACKET_copy_all(buf)
|| !test_PACKET_memdup(buf)
|| !test_PACKET_strndup()
|| !test_PACKET_contains_zero_byte()
|| !test_PACKET_forward(buf)
|| !test_PACKET_get_length_prefixed_1()
|| !test_PACKET_get_length_prefixed_2()
|| !test_PACKET_get_length_prefixed_3()
|| !test_PACKET_as_length_prefixed_1()
|| !test_PACKET_as_length_prefixed_2()) {
return 1;
}
printf("PASS\n");
return 0;
}
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