1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
|
/** @file
* IPRT - Base64, MIME content transfer encoding.
*/
/*
* Copyright (C) 2009-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
#ifndef IPRT_INCLUDED_base64_h
#define IPRT_INCLUDED_base64_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/types.h>
RT_C_DECLS_BEGIN
/** @defgroup grp_rt_base64 RTBase64 - Base64, MIME content transfer encoding.
* @ingroup grp_rt
* @{
*/
/** @def RTBASE64_EOL_SIZE
* The size of the end-of-line marker. */
#if defined(RT_OS_OS2) || defined(RT_OS_WINDOWS)
# define RTBASE64_EOL_SIZE (sizeof("\r\n") - 1)
#else
# define RTBASE64_EOL_SIZE (sizeof("\n") - 1)
#endif
/** @name Flags for RTBase64EncodeEx() and RTBase64EncodedLengthEx().
* @{ */
/** Insert line breaks into encoded string.
* The size of the end-of-line marker is that that of the host platform.
*/
#define RTBASE64_FLAGS_EOL_NATIVE UINT32_C(0) /**< Use native newlines. */
#define RTBASE64_FLAGS_NO_LINE_BREAKS UINT32_C(1) /**< No newlines. */
#define RTBASE64_FLAGS_EOL_LF UINT32_C(2) /**< Use UNIX-style newlines. */
#define RTBASE64_FLAGS_EOL_CRLF UINT32_C(3) /**< Use DOS-style newlines. */
#define RTBASE64_FLAGS_EOL_STYLE_MASK UINT32_C(3) /**< End-of-line style mask. */
/** @} */
/**
* Calculates the decoded data size for a Base64 encoded string.
*
* @returns The length in bytes. -1 if the encoding is bad.
*
* @param pszString The Base64 encoded string.
* @param ppszEnd If not NULL, this will point to the first char
* following the Base64 encoded text block. If
* NULL the entire string is assumed to be Base64.
*/
RTDECL(ssize_t) RTBase64DecodedSize(const char *pszString, char **ppszEnd);
/**
* Calculates the decoded data size for a Base64 encoded UTF-16 string.
*
* @returns The length in bytes. -1 if the encoding is bad.
*
* @param pwszString The Base64 encoded UTF-16 string.
* @param ppwszEnd If not NULL, this will point to the first char
* following the Base64 encoded text block. If
* NULL the entire string is assumed to be Base64.
*/
RTDECL(ssize_t) RTBase64DecodedUtf16Size(PCRTUTF16 pwszString, PRTUTF16 *ppwszEnd);
/**
* Calculates the decoded data size for a Base64 encoded string.
*
* @returns The length in bytes. -1 if the encoding is bad.
*
* @param pszString The Base64 encoded string.
* @param cchStringMax The max length to decode, use RTSTR_MAX if the
* length of @a pszString is not known and it is
* really zero terminated.
* @param ppszEnd If not NULL, this will point to the first char
* following the Base64 encoded text block. If
* NULL the entire string is assumed to be Base64.
*/
RTDECL(ssize_t) RTBase64DecodedSizeEx(const char *pszString, size_t cchStringMax, char **ppszEnd);
/**
* Calculates the decoded data size for a Base64 encoded UTF-16 string.
*
* @returns The length in bytes. -1 if the encoding is bad.
*
* @param pwszString The Base64 encoded UTF-16 string.
* @param cwcStringMax The max length to decode in RTUTF16 units, use
* RTSTR_MAX if the length of @a pwszString is not
* known and it is really zero terminated.
* @param ppwszEnd If not NULL, this will point to the first char
* following the Base64 encoded text block. If
* NULL the entire string is assumed to be Base64.
*/
RTDECL(ssize_t) RTBase64DecodedUtf16SizeEx(PCRTUTF16 pwszString, size_t cwcStringMax, PRTUTF16 *ppwszEnd);
/**
* Decodes a Base64 encoded string into the buffer supplied by the caller.
*
* @returns IPRT status code.
* @retval VERR_BUFFER_OVERFLOW if the buffer is too small. pcbActual will not
* be set, nor will ppszEnd.
* @retval VERR_INVALID_BASE64_ENCODING if the encoding is wrong.
*
* @param pszString The Base64 string. Whether the entire string or
* just the start of the string is in Base64 depends
* on whether ppszEnd is specified or not.
* @param pvData Where to store the decoded data.
* @param cbData The size of the output buffer that pvData points to.
* @param pcbActual Where to store the actual number of bytes returned.
* Optional.
* @param ppszEnd Indicates that the string may contain other stuff
* after the Base64 encoded data when not NULL. Will
* be set to point to the first char that's not part of
* the encoding. If NULL the entire string must be part
* of the Base64 encoded data.
*/
RTDECL(int) RTBase64Decode(const char *pszString, void *pvData, size_t cbData, size_t *pcbActual, char **ppszEnd);
/**
* Decodes a Base64 encoded UTF-16 string into the buffer supplied by the
* caller.
*
* @returns IPRT status code.
* @retval VERR_BUFFER_OVERFLOW if the buffer is too small. pcbActual will not
* be set, nor will ppszEnd.
* @retval VERR_INVALID_BASE64_ENCODING if the encoding is wrong.
*
* @param pwszString The Base64 UTF-16 string. Whether the entire string
* or just the start of the string is in Base64 depends
* on whether ppwszEnd is specified or not.
* @param pvData Where to store the decoded data.
* @param cbData The size of the output buffer that pvData points to.
* @param pcbActual Where to store the actual number of bytes returned.
* Optional.
* @param ppwszEnd Indicates that the string may contain other stuff
* after the Base64 encoded data when not NULL. Will
* be set to point to the first char that's not part of
* the encoding. If NULL the entire string must be part
* of the Base64 encoded data.
*/
RTDECL(int) RTBase64DecodeUtf16(PCRTUTF16 pwszString, void *pvData, size_t cbData, size_t *pcbActual, PRTUTF16 *ppwszEnd);
/**
* Decodes a Base64 encoded string into the buffer supplied by the caller.
*
* @returns IPRT status code.
* @retval VERR_BUFFER_OVERFLOW if the buffer is too small. pcbActual will not
* be set, nor will ppszEnd.
* @retval VERR_INVALID_BASE64_ENCODING if the encoding is wrong.
*
* @param pszString The Base64 string. Whether the entire string or
* just the start of the string is in Base64 depends
* on whether ppszEnd is specified or not.
* @param cchStringMax The max length to decode, use RTSTR_MAX if the
* length of @a pszString is not known and it is
* really zero terminated.
* @param pvData Where to store the decoded data.
* @param cbData The size of the output buffer that pvData points to.
* @param pcbActual Where to store the actual number of bytes returned.
* Optional.
* @param ppszEnd Indicates that the string may contain other stuff
* after the Base64 encoded data when not NULL. Will
* be set to point to the first char that's not part of
* the encoding. If NULL the entire string must be part
* of the Base64 encoded data.
*/
RTDECL(int) RTBase64DecodeEx(const char *pszString, size_t cchStringMax, void *pvData, size_t cbData,
size_t *pcbActual, char **ppszEnd);
/**
* Decodes a Base64 encoded UTF-16 string into the buffer supplied by the
* caller.
*
* @returns IPRT status code.
* @retval VERR_BUFFER_OVERFLOW if the buffer is too small. pcbActual will not
* be set, nor will ppszEnd.
* @retval VERR_INVALID_BASE64_ENCODING if the encoding is wrong.
*
* @param pwszString The Base64 UTF-16 string. Whether the entire string
* or just the start of the string is in Base64 depends
* on whether ppszEnd is specified or not.
* @param cwcStringMax The max length to decode in RTUTF16 units, use
* RTSTR_MAX if the length of @a pwszString is not
* known and it is really zero terminated.
* @param pvData Where to store the decoded data.
* @param cbData The size of the output buffer that pvData points to.
* @param pcbActual Where to store the actual number of bytes returned.
* Optional.
* @param ppwszEnd Indicates that the string may contain other stuff
* after the Base64 encoded data when not NULL. Will
* be set to point to the first char that's not part of
* the encoding. If NULL the entire string must be part
* of the Base64 encoded data.
*/
RTDECL(int) RTBase64DecodeUtf16Ex(PCRTUTF16 pwszString, size_t cwcStringMax, void *pvData, size_t cbData,
size_t *pcbActual, PRTUTF16 *ppwszEnd);
/**
* Calculates the length of the Base64 encoding of a given number of bytes of
* data produced by RTBase64Encode().
*
* @returns The Base64 string length, excluding the terminator.
* @param cbData The number of bytes to encode.
*/
RTDECL(size_t) RTBase64EncodedLength(size_t cbData);
/**
* Calculates the UTF-16 length of the Base64 encoding of a given number of
* bytes of data produced by RTBase64EncodeUtf16().
*
* @returns The Base64 UTF-16 string length (in RTUTF16 units), excluding the
* terminator.
* @param cbData The number of bytes to encode.
*/
RTDECL(size_t) RTBase64EncodedUtf16Length(size_t cbData);
/**
* Calculates the length of the Base64 encoding of a given number of bytes of
* data produced by RTBase64EncodeEx() with the same @a fFlags.
*
* @returns The Base64 string length, excluding the terminator.
* @param cbData The number of bytes to encode.
* @param fFlags Flags, any combination of the RTBASE64_FLAGS \#defines.
*/
RTDECL(size_t) RTBase64EncodedLengthEx(size_t cbData, uint32_t fFlags);
/**
* Calculates the UTF-16 length of the Base64 encoding of a given number of
* bytes of data produced by RTBase64EncodeUtf16Ex() with the same @a fFlags.
*
* @returns The Base64 UTF-16 string length (in RTUTF16 units), excluding the
* terminator.
* @param cbData The number of bytes to encode.
* @param fFlags Flags, any combination of the RTBASE64_FLAGS \#defines.
*/
RTDECL(size_t) RTBase64EncodedUtf16LengthEx(size_t cbData, uint32_t fFlags);
/**
* Encodes the specifed data into a Base64 string, the caller supplies the
* output buffer.
*
* This is equivalent to calling RTBase64EncodeEx() with no flags.
*
* @returns IRPT status code.
* @retval VERR_BUFFER_OVERFLOW if the output buffer is too small. The buffer
* may contain an invalid Base64 string.
*
* @param pvData The data to encode.
* @param cbData The number of bytes to encode.
* @param pszBuf Where to put the Base64 string.
* @param cbBuf The size of the output buffer, including the terminator.
* @param pcchActual The actual number of characters returned.
*/
RTDECL(int) RTBase64Encode(const void *pvData, size_t cbData, char *pszBuf, size_t cbBuf, size_t *pcchActual);
/**
* Encodes the specifed data into a Base64 UTF-16 string, the caller supplies
* the output buffer.
*
* This is equivalent to calling RTBase64EncodeUtf16Ex() with no flags.
*
* @returns IRPT status code.
* @retval VERR_BUFFER_OVERFLOW if the output buffer is too small. The buffer
* may contain an invalid Base64 string.
*
* @param pvData The data to encode.
* @param cbData The number of bytes to encode.
* @param pwszBuf Where to put the Base64 UTF-16 string.
* @param cwcBuf The size of the output buffer in RTUTF16 units,
* including the terminator.
* @param pcwcActual The actual number of characters returned (excluding the
* terminator). Optional.
*/
RTDECL(int) RTBase64EncodeUtf16(const void *pvData, size_t cbData, PRTUTF16 pwszBuf, size_t cwcBuf, size_t *pcwcActual);
/**
* Encodes the specifed data into a Base64 string, the caller supplies the
* output buffer.
*
* @returns IRPT status code.
* @retval VERR_BUFFER_OVERFLOW if the output buffer is too small. The buffer
* may contain an invalid Base64 string.
*
* @param pvData The data to encode.
* @param cbData The number of bytes to encode.
* @param fFlags Flags, any combination of the RTBASE64_FLAGS \#defines.
* @param pszBuf Where to put the Base64 string.
* @param cbBuf The size of the output buffer, including the terminator.
* @param pcchActual The actual number of characters returned (excluding the
* terminator). Optional.
*/
RTDECL(int) RTBase64EncodeEx(const void *pvData, size_t cbData, uint32_t fFlags,
char *pszBuf, size_t cbBuf, size_t *pcchActual);
/**
* Encodes the specifed data into a Base64 UTF-16 string, the caller supplies
* the output buffer.
*
* @returns IRPT status code.
* @retval VERR_BUFFER_OVERFLOW if the output buffer is too small. The buffer
* may contain an invalid Base64 string.
*
* @param pvData The data to encode.
* @param cbData The number of bytes to encode.
* @param fFlags Flags, any combination of the RTBASE64_FLAGS \#defines.
* @param pwszBuf Where to put the Base64 UTF-16 string.
* @param cwcBuf The size of the output buffer in RTUTF16 units,
* including the terminator.
* @param pcwcActual The actual number of characters returned (excluding the
* terminator). Optional.
*/
RTDECL(int) RTBase64EncodeUtf16Ex(const void *pvData, size_t cbData, uint32_t fFlags,
PRTUTF16 pwszBuf, size_t cwcBuf, size_t *pcwcActual);
/** @} */
RT_C_DECLS_END
#endif /* !IPRT_INCLUDED_base64_h */
|
