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/*
*
* Copyright 2015 gRPC authors.
*
* 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 "src/core/lib/slice/b64.h"
#include <string.h>
#include <grpc/slice.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/slice/slice_internal.h"
#include "test/core/util/test_config.h"
static int buffers_are_equal(const unsigned char *buf1,
const unsigned char *buf2, size_t size) {
size_t i;
for (i = 0; i < size; i++) {
if (buf1[i] != buf2[i]) {
gpr_log(GPR_ERROR, "buf1 and buf2 differ: buf1[%d] = %x vs buf2[%d] = %x",
(int)i, buf1[i], (int)i, buf2[i]);
return 0;
}
}
return 1;
}
static void test_simple_encode_decode_b64(int url_safe, int multiline) {
const char *hello = "hello";
char *hello_b64 =
grpc_base64_encode(hello, strlen(hello), url_safe, multiline);
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_slice hello_slice = grpc_base64_decode(&exec_ctx, hello_b64, url_safe);
GPR_ASSERT(GRPC_SLICE_LENGTH(hello_slice) == strlen(hello));
GPR_ASSERT(strncmp((const char *)GRPC_SLICE_START_PTR(hello_slice), hello,
GRPC_SLICE_LENGTH(hello_slice)) == 0);
grpc_slice_unref_internal(&exec_ctx, hello_slice);
grpc_exec_ctx_finish(&exec_ctx);
gpr_free(hello_b64);
}
static void test_full_range_encode_decode_b64(int url_safe, int multiline) {
unsigned char orig[256];
size_t i;
char *b64;
grpc_slice orig_decoded;
for (i = 0; i < sizeof(orig); i++) orig[i] = (uint8_t)i;
/* Try all the different paddings. */
for (i = 0; i < 3; i++) {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
b64 = grpc_base64_encode(orig, sizeof(orig) - i, url_safe, multiline);
orig_decoded = grpc_base64_decode(&exec_ctx, b64, url_safe);
GPR_ASSERT(GRPC_SLICE_LENGTH(orig_decoded) == (sizeof(orig) - i));
GPR_ASSERT(buffers_are_equal(orig, GRPC_SLICE_START_PTR(orig_decoded),
sizeof(orig) - i));
grpc_slice_unref_internal(&exec_ctx, orig_decoded);
gpr_free(b64);
grpc_exec_ctx_finish(&exec_ctx);
}
}
static void test_simple_encode_decode_b64_no_multiline(void) {
test_simple_encode_decode_b64(0, 0);
}
static void test_simple_encode_decode_b64_multiline(void) {
test_simple_encode_decode_b64(0, 1);
}
static void test_simple_encode_decode_b64_urlsafe_no_multiline(void) {
test_simple_encode_decode_b64(1, 0);
}
static void test_simple_encode_decode_b64_urlsafe_multiline(void) {
test_simple_encode_decode_b64(1, 1);
}
static void test_full_range_encode_decode_b64_no_multiline(void) {
test_full_range_encode_decode_b64(0, 0);
}
static void test_full_range_encode_decode_b64_multiline(void) {
test_full_range_encode_decode_b64(0, 1);
}
static void test_full_range_encode_decode_b64_urlsafe_no_multiline(void) {
test_full_range_encode_decode_b64(1, 0);
}
static void test_full_range_encode_decode_b64_urlsafe_multiline(void) {
test_full_range_encode_decode_b64(1, 1);
}
static void test_url_safe_unsafe_mismatch_failure(void) {
unsigned char orig[256];
size_t i;
char *b64;
grpc_slice orig_decoded;
int url_safe = 1;
for (i = 0; i < sizeof(orig); i++) orig[i] = (uint8_t)i;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
b64 = grpc_base64_encode(orig, sizeof(orig), url_safe, 0);
orig_decoded = grpc_base64_decode(&exec_ctx, b64, !url_safe);
GPR_ASSERT(GRPC_SLICE_IS_EMPTY(orig_decoded));
gpr_free(b64);
grpc_slice_unref_internal(&exec_ctx, orig_decoded);
b64 = grpc_base64_encode(orig, sizeof(orig), !url_safe, 0);
orig_decoded = grpc_base64_decode(&exec_ctx, b64, url_safe);
GPR_ASSERT(GRPC_SLICE_IS_EMPTY(orig_decoded));
gpr_free(b64);
grpc_slice_unref_internal(&exec_ctx, orig_decoded);
grpc_exec_ctx_finish(&exec_ctx);
}
static void test_rfc4648_test_vectors(void) {
char *b64;
b64 = grpc_base64_encode("", 0, 0, 0);
GPR_ASSERT(strcmp("", b64) == 0);
gpr_free(b64);
b64 = grpc_base64_encode("f", 1, 0, 0);
GPR_ASSERT(strcmp("Zg==", b64) == 0);
gpr_free(b64);
b64 = grpc_base64_encode("fo", 2, 0, 0);
GPR_ASSERT(strcmp("Zm8=", b64) == 0);
gpr_free(b64);
b64 = grpc_base64_encode("foo", 3, 0, 0);
GPR_ASSERT(strcmp("Zm9v", b64) == 0);
gpr_free(b64);
b64 = grpc_base64_encode("foob", 4, 0, 0);
GPR_ASSERT(strcmp("Zm9vYg==", b64) == 0);
gpr_free(b64);
b64 = grpc_base64_encode("fooba", 5, 0, 0);
GPR_ASSERT(strcmp("Zm9vYmE=", b64) == 0);
gpr_free(b64);
b64 = grpc_base64_encode("foobar", 6, 0, 0);
GPR_ASSERT(strcmp("Zm9vYmFy", b64) == 0);
gpr_free(b64);
}
static void test_unpadded_decode(void) {
grpc_slice decoded;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
decoded = grpc_base64_decode(&exec_ctx, "Zm9vYmFy", 0);
GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
GPR_ASSERT(grpc_slice_str_cmp(decoded, "foobar") == 0);
grpc_slice_unref(decoded);
decoded = grpc_base64_decode(&exec_ctx, "Zm9vYmE", 0);
GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
GPR_ASSERT(grpc_slice_str_cmp(decoded, "fooba") == 0);
grpc_slice_unref(decoded);
decoded = grpc_base64_decode(&exec_ctx, "Zm9vYg", 0);
GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
GPR_ASSERT(grpc_slice_str_cmp(decoded, "foob") == 0);
grpc_slice_unref(decoded);
decoded = grpc_base64_decode(&exec_ctx, "Zm9v", 0);
GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
GPR_ASSERT(grpc_slice_str_cmp(decoded, "foo") == 0);
grpc_slice_unref(decoded);
decoded = grpc_base64_decode(&exec_ctx, "Zm8", 0);
GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
GPR_ASSERT(grpc_slice_str_cmp(decoded, "fo") == 0);
grpc_slice_unref(decoded);
decoded = grpc_base64_decode(&exec_ctx, "Zg", 0);
GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
GPR_ASSERT(grpc_slice_str_cmp(decoded, "f") == 0);
grpc_slice_unref(decoded);
decoded = grpc_base64_decode(&exec_ctx, "", 0);
GPR_ASSERT(GRPC_SLICE_IS_EMPTY(decoded));
grpc_exec_ctx_finish(&exec_ctx);
}
int main(int argc, char **argv) {
grpc_test_init(argc, argv);
test_simple_encode_decode_b64_no_multiline();
test_simple_encode_decode_b64_multiline();
test_simple_encode_decode_b64_urlsafe_no_multiline();
test_simple_encode_decode_b64_urlsafe_multiline();
test_full_range_encode_decode_b64_no_multiline();
test_full_range_encode_decode_b64_multiline();
test_full_range_encode_decode_b64_urlsafe_no_multiline();
test_full_range_encode_decode_b64_urlsafe_multiline();
test_url_safe_unsafe_mismatch_failure();
test_rfc4648_test_vectors();
test_unpadded_decode();
return 0;
}
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