3 * Copyright 2015 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #include "src/core/lib/slice/b64.h"
23 #include <grpc/grpc.h>
24 #include <grpc/slice.h>
25 #include <grpc/support/alloc.h>
26 #include <grpc/support/log.h>
28 #include "src/core/lib/iomgr/exec_ctx.h"
29 #include "src/core/lib/slice/slice_internal.h"
30 #include "test/core/util/test_config.h"
32 static int buffers_are_equal(const unsigned char* buf1,
33 const unsigned char* buf2, size_t size) {
35 for (i = 0; i < size; i++) {
36 if (buf1[i] != buf2[i]) {
37 gpr_log(GPR_ERROR, "buf1 and buf2 differ: buf1[%d] = %x vs buf2[%d] = %x",
38 static_cast<int>(i), buf1[i], static_cast<int>(i), buf2[i]);
45 static void test_simple_encode_decode_b64(int url_safe, int multiline) {
46 const char* hello = "hello";
48 grpc_base64_encode(hello, strlen(hello), url_safe, multiline);
49 grpc_core::ExecCtx exec_ctx;
50 grpc_slice hello_slice = grpc_base64_decode(hello_b64, url_safe);
51 GPR_ASSERT(GRPC_SLICE_LENGTH(hello_slice) == strlen(hello));
52 GPR_ASSERT(strncmp((const char*)GRPC_SLICE_START_PTR(hello_slice), hello,
53 GRPC_SLICE_LENGTH(hello_slice)) == 0);
55 grpc_slice_unref_internal(hello_slice);
60 static void test_full_range_encode_decode_b64(int url_safe, int multiline) {
61 unsigned char orig[256];
64 grpc_slice orig_decoded;
65 for (i = 0; i < sizeof(orig); i++) orig[i] = static_cast<uint8_t>(i);
67 /* Try all the different paddings. */
68 for (i = 0; i < 3; i++) {
69 grpc_core::ExecCtx exec_ctx;
70 b64 = grpc_base64_encode(orig, sizeof(orig) - i, url_safe, multiline);
71 orig_decoded = grpc_base64_decode(b64, url_safe);
72 GPR_ASSERT(GRPC_SLICE_LENGTH(orig_decoded) == (sizeof(orig) - i));
73 GPR_ASSERT(buffers_are_equal(orig, GRPC_SLICE_START_PTR(orig_decoded),
75 grpc_slice_unref_internal(orig_decoded);
80 static void test_simple_encode_decode_b64_no_multiline(void) {
81 test_simple_encode_decode_b64(0, 0);
84 static void test_simple_encode_decode_b64_multiline(void) {
85 test_simple_encode_decode_b64(0, 1);
88 static void test_simple_encode_decode_b64_urlsafe_no_multiline(void) {
89 test_simple_encode_decode_b64(1, 0);
92 static void test_simple_encode_decode_b64_urlsafe_multiline(void) {
93 test_simple_encode_decode_b64(1, 1);
96 static void test_full_range_encode_decode_b64_no_multiline(void) {
97 test_full_range_encode_decode_b64(0, 0);
100 static void test_full_range_encode_decode_b64_multiline(void) {
101 test_full_range_encode_decode_b64(0, 1);
104 static void test_full_range_encode_decode_b64_urlsafe_no_multiline(void) {
105 test_full_range_encode_decode_b64(1, 0);
108 static void test_full_range_encode_decode_b64_urlsafe_multiline(void) {
109 test_full_range_encode_decode_b64(1, 1);
112 static void test_url_safe_unsafe_mismatch_failure(void) {
113 unsigned char orig[256];
116 grpc_slice orig_decoded;
118 for (i = 0; i < sizeof(orig); i++) orig[i] = static_cast<uint8_t>(i);
120 grpc_core::ExecCtx exec_ctx;
121 b64 = grpc_base64_encode(orig, sizeof(orig), url_safe, 0);
122 orig_decoded = grpc_base64_decode(b64, !url_safe);
123 GPR_ASSERT(GRPC_SLICE_IS_EMPTY(orig_decoded));
125 grpc_slice_unref_internal(orig_decoded);
127 b64 = grpc_base64_encode(orig, sizeof(orig), !url_safe, 0);
128 orig_decoded = grpc_base64_decode(b64, url_safe);
129 GPR_ASSERT(GRPC_SLICE_IS_EMPTY(orig_decoded));
131 grpc_slice_unref_internal(orig_decoded);
134 static void test_rfc4648_test_vectors(void) {
137 b64 = grpc_base64_encode("", 0, 0, 0);
138 GPR_ASSERT(strcmp("", b64) == 0);
141 b64 = grpc_base64_encode("f", 1, 0, 0);
142 GPR_ASSERT(strcmp("Zg==", b64) == 0);
145 b64 = grpc_base64_encode("fo", 2, 0, 0);
146 GPR_ASSERT(strcmp("Zm8=", b64) == 0);
149 b64 = grpc_base64_encode("foo", 3, 0, 0);
150 GPR_ASSERT(strcmp("Zm9v", b64) == 0);
153 b64 = grpc_base64_encode("foob", 4, 0, 0);
154 GPR_ASSERT(strcmp("Zm9vYg==", b64) == 0);
157 b64 = grpc_base64_encode("fooba", 5, 0, 0);
158 GPR_ASSERT(strcmp("Zm9vYmE=", b64) == 0);
161 b64 = grpc_base64_encode("foobar", 6, 0, 0);
162 GPR_ASSERT(strcmp("Zm9vYmFy", b64) == 0);
166 static void test_unpadded_decode(void) {
169 grpc_core::ExecCtx exec_ctx;
170 decoded = grpc_base64_decode("Zm9vYmFy", 0);
171 GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
172 GPR_ASSERT(grpc_slice_str_cmp(decoded, "foobar") == 0);
173 grpc_slice_unref(decoded);
175 decoded = grpc_base64_decode("Zm9vYmE", 0);
176 GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
177 GPR_ASSERT(grpc_slice_str_cmp(decoded, "fooba") == 0);
178 grpc_slice_unref(decoded);
180 decoded = grpc_base64_decode("Zm9vYg", 0);
181 GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
182 GPR_ASSERT(grpc_slice_str_cmp(decoded, "foob") == 0);
183 grpc_slice_unref(decoded);
185 decoded = grpc_base64_decode("Zm9v", 0);
186 GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
187 GPR_ASSERT(grpc_slice_str_cmp(decoded, "foo") == 0);
188 grpc_slice_unref(decoded);
190 decoded = grpc_base64_decode("Zm8", 0);
191 GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
192 GPR_ASSERT(grpc_slice_str_cmp(decoded, "fo") == 0);
193 grpc_slice_unref(decoded);
195 decoded = grpc_base64_decode("Zg", 0);
196 GPR_ASSERT(!GRPC_SLICE_IS_EMPTY(decoded));
197 GPR_ASSERT(grpc_slice_str_cmp(decoded, "f") == 0);
198 grpc_slice_unref(decoded);
200 decoded = grpc_base64_decode("", 0);
201 GPR_ASSERT(GRPC_SLICE_IS_EMPTY(decoded));
204 int main(int argc, char** argv) {
205 grpc::testing::TestEnvironment env(argc, argv);
207 test_simple_encode_decode_b64_no_multiline();
208 test_simple_encode_decode_b64_multiline();
209 test_simple_encode_decode_b64_urlsafe_no_multiline();
210 test_simple_encode_decode_b64_urlsafe_multiline();
211 test_full_range_encode_decode_b64_no_multiline();
212 test_full_range_encode_decode_b64_multiline();
213 test_full_range_encode_decode_b64_urlsafe_no_multiline();
214 test_full_range_encode_decode_b64_urlsafe_multiline();
215 test_url_safe_unsafe_mismatch_failure();
216 test_rfc4648_test_vectors();
217 test_unpadded_decode();