blob: 20ce57180c74ba50bf54ec5c30d24c16e18d5170 [file] [log] [blame]
/* Copyright (c) 2014, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <stdio.h>
#include <stdlib.h>
#include <openssl/bytestring.h>
static int test_skip() {
static const uint8_t kData[] = {1, 2, 3};
CBS data;
CBS_init(&data, kData, sizeof(kData));
return CBS_len(&data) == 3 &&
CBS_skip(&data, 1) &&
CBS_len(&data) == 2 &&
CBS_skip(&data, 2) &&
CBS_len(&data) == 0 &&
!CBS_skip(&data, 1);
}
static int test_get_u() {
static const uint8_t kData[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
uint8_t u8;
uint16_t u16;
uint32_t u32;
CBS data;
CBS_init(&data, kData, sizeof(kData));
return CBS_get_u8(&data, &u8) &&
u8 == 1 &&
CBS_get_u16(&data, &u16) &&
u16 == 0x203 &&
CBS_get_u24(&data, &u32) &&
u32 == 0x40506 &&
CBS_get_u32(&data, &u32) &&
u32 == 0x708090a &&
!CBS_get_u8(&data, &u8);
}
static int test_get_prefixed() {
static const uint8_t kData[] = {1, 2, 0, 2, 3, 4, 0, 0, 3, 3, 2, 1};
uint8_t u8;
uint16_t u16;
uint32_t u32;
CBS data, prefixed;
CBS_init(&data, kData, sizeof(kData));
return CBS_get_u8_length_prefixed(&data, &prefixed) &&
CBS_len(&prefixed) == 1 &&
CBS_get_u8(&prefixed, &u8) &&
u8 == 2 &&
CBS_get_u16_length_prefixed(&data, &prefixed) &&
CBS_len(&prefixed) == 2 &&
CBS_get_u16(&prefixed, &u16) &&
u16 == 0x304 &&
CBS_get_u24_length_prefixed(&data, &prefixed) &&
CBS_len(&prefixed) == 3 &&
CBS_get_u24(&prefixed, &u32) &&
u32 == 0x30201;
}
static int test_get_prefixed_bad() {
static const uint8_t kData1[] = {2, 1};
static const uint8_t kData2[] = {0, 2, 1};
static const uint8_t kData3[] = {0, 0, 2, 1};
CBS data, prefixed;
CBS_init(&data, kData1, sizeof(kData1));
if (CBS_get_u8_length_prefixed(&data, &prefixed)) {
return 0;
}
CBS_init(&data, kData2, sizeof(kData2));
if (CBS_get_u16_length_prefixed(&data, &prefixed)) {
return 0;
}
CBS_init(&data, kData3, sizeof(kData3));
if (CBS_get_u24_length_prefixed(&data, &prefixed)) {
return 0;
}
return 1;
}
static int test_get_asn1() {
static const uint8_t kData1[] = {0x30, 2, 1, 2};
static const uint8_t kData2[] = {0x30, 3, 1, 2};
static const uint8_t kData3[] = {0x30, 0x80};
static const uint8_t kData4[] = {0x30, 0x81, 1, 1};
static const uint8_t kData5[] = {0x30, 0x82, 0, 1, 1};
CBS data, contents;
CBS_init(&data, kData1, sizeof(kData1));
if (!CBS_get_asn1(&data, &contents, 0x30) ||
CBS_len(&contents) != 2 ||
memcmp(CBS_data(&contents), "\x01\x02", 2) != 0) {
return 0;
}
CBS_init(&data, kData2, sizeof(kData2));
/* data is truncated */
if (CBS_get_asn1(&data, &contents, 0x30)) {
return 0;
}
CBS_init(&data, kData3, sizeof(kData3));
/* zero byte length of length */
if (CBS_get_asn1(&data, &contents, 0x30)) {
return 0;
}
CBS_init(&data, kData4, sizeof(kData4));
/* long form mistakenly used. */
if (CBS_get_asn1(&data, &contents, 0x30)) {
return 0;
}
CBS_init(&data, kData5, sizeof(kData5));
/* length takes too many bytes. */
if (CBS_get_asn1(&data, &contents, 0x30)) {
return 0;
}
CBS_init(&data, kData1, sizeof(kData1));
/* wrong tag. */
if (CBS_get_asn1(&data, &contents, 0x31)) {
return 0;
}
return 1;
}
static int test_get_indef() {
static const uint8_t kData1[] = {0x30, 0x80, 0x00, 0x00};
static const uint8_t kDataWithoutEOC[] = {0x30, 0x80, 0x01, 0x00};
static const uint8_t kDataWithBadInternalLength[] = {0x30, 0x80, 0x01, 0x01};
static const uint8_t kDataNested[] = {0x30, 0x80, 0x30, 0x80, 0x30, 0x80,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
static const uint8_t kDataPrimitive[] = {0x02, 0x80, 0x00, 0x00};
CBS data, contents;
CBS_init(&data, kData1, sizeof(kData1));
if (CBS_get_asn1(&data, &contents, 0x30)) {
/* Indefinite lengths should not be supported in DER mode. */
fprintf(stderr, "Indefinite length parsed by CBS_get_asn1.\n");
return 0;
}
if (!CBS_get_asn1_ber(&data, &contents, 0x30) ||
CBS_len(&contents) != 0 ||
CBS_len(&data) != 0) {
fprintf(stderr, "Simple indefinite length failed.\n");
return 0;
}
CBS_init(&data, kDataWithoutEOC, sizeof(kDataWithoutEOC));
if (CBS_get_asn1_ber(&data, &contents, 0x30)) {
fprintf(stderr, "Parsed without EOC.\n");
return 0;
}
CBS_init(&data, kDataWithBadInternalLength,
sizeof(kDataWithBadInternalLength));
if (CBS_get_asn1_ber(&data, &contents, 0x30)) {
fprintf(stderr, "Parsed with internal length.\n");
return 0;
}
CBS_init(&data, kDataNested, sizeof(kDataNested));
if (!CBS_get_asn1_ber(&data, &contents, 0x30) ||
CBS_len(&contents) != 8 ||
CBS_len(&data) != 0) {
fprintf(stderr, "Nested indefinite lengths failed.\n");
return 0;
}
CBS_init(&data, kDataPrimitive, sizeof(kDataPrimitive));
if (CBS_get_asn1_ber(&data, &contents, 0x02)) {
/* Indefinite lengths should not be supported for non-constructed
* elements. */
fprintf(stderr, "Parsed non-constructed element with indefinite length\n");
return 0;
}
return 1;
}
static int test_cbb_basic() {
static const uint8_t kExpected[] = {1, 2, 3, 4, 5, 6, 7, 8};
uint8_t *buf;
size_t buf_len;
int ok;
CBB cbb;
if (!CBB_init(&cbb, 100)) {
return 0;
}
CBB_cleanup(&cbb);
if (!CBB_init(&cbb, 0) ||
!CBB_add_u8(&cbb, 1) ||
!CBB_add_u16(&cbb, 0x203) ||
!CBB_add_u24(&cbb, 0x40506) ||
!CBB_add_bytes(&cbb, (const uint8_t*) "\x07\x08", 2) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
ok = buf_len == sizeof(kExpected) && memcmp(buf, kExpected, buf_len) == 0;
free(buf);
return ok;
}
static int test_cbb_fixed() {
CBB cbb;
uint8_t buf[1];
uint8_t *out_buf;
size_t out_size;
if (!CBB_init_fixed(&cbb, NULL, 0) ||
CBB_add_u8(&cbb, 1) ||
!CBB_finish(&cbb, &out_buf, &out_size) ||
out_buf != NULL ||
out_size != 0) {
return 0;
}
if (!CBB_init_fixed(&cbb, buf, 1) ||
!CBB_add_u8(&cbb, 1) ||
CBB_add_u8(&cbb, 2) ||
!CBB_finish(&cbb, &out_buf, &out_size) ||
out_buf != buf ||
out_size != 1 ||
buf[0] != 1) {
return 0;
}
return 1;
}
static int test_cbb_finish_child() {
CBB cbb, child;
uint8_t *out_buf;
size_t out_size;
if (!CBB_init(&cbb, 16) ||
!CBB_add_u8_length_prefixed(&cbb, &child) ||
CBB_finish(&child, &out_buf, &out_size) ||
!CBB_finish(&cbb, &out_buf, &out_size) ||
out_size != 1 ||
out_buf[0] != 0) {
return 0;
}
free(out_buf);
return 1;
}
static int test_cbb_prefixed() {
static const uint8_t kExpected[] = {0, 1, 1, 0, 2, 2, 3, 0, 0, 3,
4, 5, 6, 5, 4, 1, 0, 1, 2};
uint8_t *buf;
size_t buf_len;
CBB cbb, contents, inner_contents, inner_inner_contents;
int ok;
if (!CBB_init(&cbb, 0) ||
!CBB_add_u8_length_prefixed(&cbb, &contents) ||
!CBB_add_u8_length_prefixed(&cbb, &contents) ||
!CBB_add_u8(&contents, 1) ||
!CBB_add_u16_length_prefixed(&cbb, &contents) ||
!CBB_add_u16(&contents, 0x203) ||
!CBB_add_u24_length_prefixed(&cbb, &contents) ||
!CBB_add_u24(&contents, 0x40506) ||
!CBB_add_u8_length_prefixed(&cbb, &contents) ||
!CBB_add_u8_length_prefixed(&contents, &inner_contents) ||
!CBB_add_u8(&inner_contents, 1) ||
!CBB_add_u16_length_prefixed(&inner_contents, &inner_inner_contents) ||
!CBB_add_u8(&inner_inner_contents, 2) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
ok = buf_len == sizeof(kExpected) && memcmp(buf, kExpected, buf_len) == 0;
free(buf);
return ok;
}
static int test_cbb_misuse() {
CBB cbb, child, contents;
uint8_t *buf;
size_t buf_len;
if (!CBB_init(&cbb, 0) ||
!CBB_add_u8_length_prefixed(&cbb, &child) ||
!CBB_add_u8(&child, 1) ||
!CBB_add_u8(&cbb, 2)) {
return 0;
}
/* Since we wrote to |cbb|, |child| is now invalid and attempts to write to
* it should fail. */
if (CBB_add_u8(&child, 1) ||
CBB_add_u16(&child, 1) ||
CBB_add_u24(&child, 1) ||
CBB_add_u8_length_prefixed(&child, &contents) ||
CBB_add_u16_length_prefixed(&child, &contents) ||
CBB_add_asn1(&child, &contents, 1) ||
CBB_add_bytes(&child, (const uint8_t*) "a", 1)) {
fprintf(stderr, "CBB operation on invalid CBB did not fail.\n");
return 0;
}
if (!CBB_finish(&cbb, &buf, &buf_len) ||
buf_len != 3 ||
memcmp(buf, "\x01\x01\x02", 3) != 0) {
return 0;
}
free(buf);
return 1;
}
static int test_cbb_asn1() {
static const uint8_t kExpected[] = {0x30, 3, 1, 2, 3};
uint8_t *buf, *test_data;
size_t buf_len;
CBB cbb, contents, inner_contents;
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_bytes(&contents, (const uint8_t*) "\x01\x02\x03", 3) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != sizeof(kExpected) || memcmp(buf, kExpected, buf_len) != 0) {
return 0;
}
free(buf);
test_data = malloc(100000);
memset(test_data, 0x42, 100000);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_bytes(&contents, test_data, 130) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != 3 + 130 ||
memcmp(buf, "\x30\x81\x82", 3) != 0 ||
memcmp(buf + 3, test_data, 130) != 0) {
return 0;
}
free(buf);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_bytes(&contents, test_data, 1000) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != 4 + 1000 ||
memcmp(buf, "\x30\x82\x03\xe8", 4) != 0 ||
memcmp(buf + 4, test_data, 1000)) {
return 0;
}
free(buf);
if (!CBB_init(&cbb, 0) ||
!CBB_add_asn1(&cbb, &contents, 0x30) ||
!CBB_add_asn1(&contents, &inner_contents, 0x30) ||
!CBB_add_bytes(&inner_contents, test_data, 100000) ||
!CBB_finish(&cbb, &buf, &buf_len)) {
return 0;
}
if (buf_len != 5 + 5 + 100000 ||
memcmp(buf, "\x30\x83\x01\x86\xa5\x30\x83\x01\x86\xa0", 10) != 0 ||
memcmp(buf + 10, test_data, 100000)) {
return 0;
}
free(buf);
free(test_data);
return 1;
}
int main() {
if (!test_skip() ||
!test_get_u() ||
!test_get_prefixed() ||
!test_get_prefixed_bad() ||
!test_get_asn1() ||
!test_get_indef() ||
!test_cbb_basic() ||
!test_cbb_fixed() ||
!test_cbb_finish_child() ||
!test_cbb_misuse() ||
!test_cbb_prefixed() ||
!test_cbb_asn1()) {
return 1;
}
printf("PASS\n");
return 0;
}