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[ceph.git] / ceph / src / jaegertracing / thrift / lib / cpp / src / thrift / protocol / TBase64Utils.cpp
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TL		 1/*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20#include <thrift/protocol/TBase64Utils.h>
21
22using std::string;
23
24namespace apache {
25namespace thrift {
26namespace protocol {
27
28static const uint8_t* kBase64EncodeTable
29 = (const uint8_t*)"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
30
31void base64_encode(const uint8_t* in, uint32_t len, uint8_t* buf) {
32 buf[0] = kBase64EncodeTable[(in[0] >> 2) & 0x3f];
33 if (len == 3) {
34 buf[1] = kBase64EncodeTable[((in[0] << 4) & 0x30) | ((in[1] >> 4) & 0x0f)];
35 buf[2] = kBase64EncodeTable[((in[1] << 2) & 0x3c) | ((in[2] >> 6) & 0x03)];
36 buf[3] = kBase64EncodeTable[in[2] & 0x3f];
37 } else if (len == 2) {
38 buf[1] = kBase64EncodeTable[((in[0] << 4) & 0x30) | ((in[1] >> 4) & 0x0f)];
39 buf[2] = kBase64EncodeTable[(in[1] << 2) & 0x3c];
40 } else { // len == 1
41 buf[1] = kBase64EncodeTable[(in[0] << 4) & 0x30];
42 }
43}
44
45static const uint8_t kBase64DecodeTable[256] = {
46 0xff,
47 0xff,
48 0xff,
49 0xff,
50 0xff,
51 0xff,
52 0xff,
53 0xff,
54 0xff,
55 0xff,
56 0xff,
57 0xff,
58 0xff,
59 0xff,
60 0xff,
61 0xff,
62 0xff,
63 0xff,
64 0xff,
65 0xff,
66 0xff,
67 0xff,
68 0xff,
69 0xff,
70 0xff,
71 0xff,
72 0xff,
73 0xff,
74 0xff,
75 0xff,
76 0xff,
77 0xff,
78 0xff,
79 0xff,
80 0xff,
81 0xff,
82 0xff,
83 0xff,
84 0xff,
85 0xff,
86 0xff,
87 0xff,
88 0xff,
89 0x3e,
90 0xff,
91 0xff,
92 0xff,
93 0x3f,
94 0x34,
95 0x35,
96 0x36,
97 0x37,
98 0x38,
99 0x39,
100 0x3a,
101 0x3b,
102 0x3c,
103 0x3d,
104 0xff,
105 0xff,
106 0xff,
107 0xff,
108 0xff,
109 0xff,
110 0xff,
111 0x00,
112 0x01,
113 0x02,
114 0x03,
115 0x04,
116 0x05,
117 0x06,
118 0x07,
119 0x08,
120 0x09,
121 0x0a,
122 0x0b,
123 0x0c,
124 0x0d,
125 0x0e,
126 0x0f,
127 0x10,
128 0x11,
129 0x12,
130 0x13,
131 0x14,
132 0x15,
133 0x16,
134 0x17,
135 0x18,
136 0x19,
137 0xff,
138 0xff,
139 0xff,
140 0xff,
141 0xff,
142 0xff,
143 0x1a,
144 0x1b,
145 0x1c,
146 0x1d,
147 0x1e,
148 0x1f,
149 0x20,
150 0x21,
151 0x22,
152 0x23,
153 0x24,
154 0x25,
155 0x26,
156 0x27,
157 0x28,
158 0x29,
159 0x2a,
160 0x2b,
161 0x2c,
162 0x2d,
163 0x2e,
164 0x2f,
165 0x30,
166 0x31,
167 0x32,
168 0x33,
169 0xff,
170 0xff,
171 0xff,
172 0xff,
173 0xff,
174 0xff,
175 0xff,
176 0xff,
177 0xff,
178 0xff,
179 0xff,
180 0xff,
181 0xff,
182 0xff,
183 0xff,
184 0xff,
185 0xff,
186 0xff,
187 0xff,
188 0xff,
189 0xff,
190 0xff,
191 0xff,
192 0xff,
193 0xff,
194 0xff,
195 0xff,
196 0xff,
197 0xff,
198 0xff,
199 0xff,
200 0xff,
201 0xff,
202 0xff,
203 0xff,
204 0xff,
205 0xff,
206 0xff,
207 0xff,
208 0xff,
209 0xff,
210 0xff,
211 0xff,
212 0xff,
213 0xff,
214 0xff,
215 0xff,
216 0xff,
217 0xff,
218 0xff,
219 0xff,
220 0xff,
221 0xff,
222 0xff,
223 0xff,
224 0xff,
225 0xff,
226 0xff,
227 0xff,
228 0xff,
229 0xff,
230 0xff,
231 0xff,
232 0xff,
233 0xff,
234 0xff,
235 0xff,
236 0xff,
237 0xff,
238 0xff,
239 0xff,
240 0xff,
241 0xff,
242 0xff,
243 0xff,
244 0xff,
245 0xff,
246 0xff,
247 0xff,
248 0xff,
249 0xff,
250 0xff,
251 0xff,
252 0xff,
253 0xff,
254 0xff,
255 0xff,
256 0xff,
257 0xff,
258 0xff,
259 0xff,
260 0xff,
261 0xff,
262 0xff,
263 0xff,
264 0xff,
265 0xff,
266 0xff,
267 0xff,
268 0xff,
269 0xff,
270 0xff,
271 0xff,
272 0xff,
273 0xff,
274 0xff,
275 0xff,
276 0xff,
277 0xff,
278 0xff,
279 0xff,
280 0xff,
281 0xff,
282 0xff,
283 0xff,
284 0xff,
285 0xff,
286 0xff,
287 0xff,
288 0xff,
289 0xff,
290 0xff,
291 0xff,
292 0xff,
293 0xff,
294 0xff,
295 0xff,
296 0xff,
297 0xff,
298 0xff,
299 0xff,
300 0xff,
301 0xff,
302};
303
304void base64_decode(uint8_t* buf, uint32_t len) {
305 buf[0] = (kBase64DecodeTable[buf[0]] << 2) | (kBase64DecodeTable[buf[1]] >> 4);
306 if (len > 2) {
307 buf[1] = ((kBase64DecodeTable[buf[1]] << 4) & 0xf0) | (kBase64DecodeTable[buf[2]] >> 2);
308 if (len > 3) {
309 buf[2] = ((kBase64DecodeTable[buf[2]] << 6) & 0xc0) | (kBase64DecodeTable[buf[3]]);
310 }
311 }
312}
313}
314}
315} // apache::thrift::protocol
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