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/* vim: set tabstop=8 shiftwidth=4 softtabstop=4 expandtab smarttab colorcolumn=80: */
/*
* Copyright 2017 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <jose/jose.h>
#include <limits.h>
#include <string.h>
#include <assert.h>
#define NBYTES(size) ((((unsigned long long) size) + 1ULL) / 8ULL)
#ifdef __MINGW32__
#define fprintf __mingw_fprintf
#endif
union encoding {
uint32_t idx;
uint8_t enc[4];
};
static inline void
set(uint8_t *val, uint32_t idx)
{
const uint8_t n = 1 << (idx % 8);
uint8_t *p = &val[idx / 8];
#pragma omp atomic update
*p |= n;
}
static inline bool
get(uint8_t *val, uint32_t idx)
{
const uint8_t n = 1 << (idx % 8);
uint8_t *p = &val[idx / 8];
uint8_t v;
#pragma omp atomic read
v = *p;
return (v & n) == n;
}
int
main(int argc, char *argv[])
{
uint8_t *val = NULL;
/* Ensure that all one byte encodings are invalid. */
#pragma omp parallel for
for (uint16_t i = 0; i <= UINT8_MAX; i++) {
union encoding enc = { i };
uint8_t dec[3] = {};
assert(jose_b64_dec_buf(enc.enc, 1, dec, sizeof(dec)) == SIZE_MAX);
}
/* Test all two-byte encodings. */
val = calloc(NBYTES(UINT32_MAX), sizeof(uint8_t));
if (!val)
return EXIT_FAILURE;
#pragma omp parallel for shared(val)
for (uint16_t i = 0; i <= UINT8_MAX; i++) {
uint8_t dec[3] = { i };
union encoding enc = {};
assert(jose_b64_enc_buf(dec, 1, enc.enc, sizeof(enc.enc)) == 2);
set(val, enc.idx);
}
#pragma omp parallel for shared(val)
for (uint16_t i = 0; i <= UINT8_MAX; i++) {
for (uint16_t j = 0; j <= UINT8_MAX; j++) {
union encoding enc = { .enc = { i, j } };
uint8_t dec[3] = {};
size_t len = 0;
len = get(val, enc.idx) ? 1 : SIZE_MAX;
if (jose_b64_dec_buf(enc.enc, 2, dec, sizeof(dec)) != len) {
fprintf(stderr, "{%hx,%hx}\"%c%c\" != %zu\n",
i, j, enc.enc[0], enc.enc[1], len);
assert(false);
}
}
}
free(val);
/* Test all three-byte encodings. */
val = calloc(NBYTES(UINT32_MAX), sizeof(uint8_t));
if (!val)
return EXIT_FAILURE;
#pragma omp parallel for shared(val)
for (uint16_t i = 0; i <= UINT8_MAX; i++) {
for (uint16_t j = 0; j <= UINT8_MAX; j++) {
uint8_t dec[3] = { i, j };
union encoding enc = {};
assert(jose_b64_enc_buf(dec, 2, enc.enc, sizeof(enc.enc)) == 3);
set(val, enc.idx);
}
}
#pragma omp parallel for shared(val)
for (uint16_t i = 0; i <= UINT8_MAX; i++) {
for (uint16_t j = 0; j <= UINT8_MAX; j++) {
for (uint16_t k = 0; k <= UINT8_MAX; k++) {
union encoding enc = { .enc = { i, j, k } };
uint8_t dec[3] = {};
size_t len = 0;
len = get(val, enc.idx) ? 2 : SIZE_MAX;
if (jose_b64_dec_buf(enc.enc, 3, dec, sizeof(dec)) != len) {
fprintf(stderr, "{%hu,%hu,%hu}\"%c%c%c\" != %zu\n",
i, j, k, enc.enc[0], enc.enc[1], enc.enc[2], len);
assert(false);
}
}
}
}
free(val);
/* Test all four-byte encodings. */
#if defined(_OPENMP) && _OPENMP >= 201107
val = calloc(NBYTES(UINT32_MAX), sizeof(uint8_t));
if (!val)
return EXIT_FAILURE;
#pragma omp parallel for shared(val)
for (uint16_t i = 0; i <= UINT8_MAX; i++) {
for (uint16_t j = 0; j <= UINT8_MAX; j++) {
for (uint16_t k = 0; k <= UINT8_MAX; k++) {
uint8_t dec[3] = { i, j, k };
union encoding enc = {};
assert(jose_b64_enc_buf(dec, 3, enc.enc, sizeof(enc.enc)) == 4);
set(val, enc.idx);
}
}
}
#pragma omp parallel for shared(val)
for (uint16_t i = 0; i <= UINT8_MAX; i++) {
for (uint16_t j = 0; j <= UINT8_MAX; j++) {
for (uint16_t k = 0; k <= UINT8_MAX; k++) {
for (uint16_t l = 0; l <= UINT8_MAX; l++) {
union encoding enc = { .enc = { i, j, k, l } };
uint8_t dec[3] = {};
size_t len = 0;
len = get(val, enc.idx) ? 3 : SIZE_MAX;
if (jose_b64_dec_buf(enc.enc, 4, dec, sizeof(dec)) != len) {
fprintf(stderr, "{%hu,%hu,%hu,%hu}\"%c%c%c%c\" != %zu\n",
i, j, k, l, enc.enc[0], enc.enc[1], enc.enc[2], enc.enc[3], len);
assert(false);
}
}
}
}
}
free(val);
#endif
return 0;
}
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