1 | /* |
2 | * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at |
7 | * https://www.openssl.org/source/license.html |
8 | */ |
9 | |
10 | #ifndef OPENSSL_MACROS_H |
11 | # define OPENSSL_MACROS_H |
12 | # pragma once |
13 | |
14 | #include <openssl/opensslconf.h> |
15 | #include <openssl/opensslv.h> |
16 | |
17 | |
18 | /* Helper macros for CPP string composition */ |
19 | # define OPENSSL_MSTR_HELPER(x) #x |
20 | # define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x) |
21 | |
22 | /* |
23 | * Sometimes OPENSSL_NO_xxx ends up with an empty file and some compilers |
24 | * don't like that. This will hopefully silence them. |
25 | */ |
26 | # define NON_EMPTY_TRANSLATION_UNIT static void *dummy = &dummy; |
27 | |
28 | /* |
29 | * Generic deprecation macro |
30 | * |
31 | * If OPENSSL_SUPPRESS_DEPRECATED is defined, then OSSL_DEPRECATED and |
32 | * OSSL_DEPRECATED_FOR become no-ops |
33 | */ |
34 | # ifndef OSSL_DEPRECATED |
35 | # undef OSSL_DEPRECATED_FOR |
36 | # ifndef OPENSSL_SUPPRESS_DEPRECATED |
37 | # if defined(_MSC_VER) |
38 | /* |
39 | * MSVC supports __declspec(deprecated) since MSVC 2003 (13.10), |
40 | * and __declspec(deprecated(message)) since MSVC 2005 (14.00) |
41 | */ |
42 | # if _MSC_VER >= 1400 |
43 | # define OSSL_DEPRECATED(since) \ |
44 | __declspec(deprecated("Since OpenSSL " # since)) |
45 | # define OSSL_DEPRECATED_FOR(since, message) \ |
46 | __declspec(deprecated("Since OpenSSL " # since ";" message)) |
47 | # elif _MSC_VER >= 1310 |
48 | # define OSSL_DEPRECATED(since) __declspec(deprecated) |
49 | # define OSSL_DEPRECATED_FOR(since, message) __declspec(deprecated) |
50 | # endif |
51 | # elif defined(__GNUC__) |
52 | /* |
53 | * According to GCC documentation, deprecations with message appeared in |
54 | * GCC 4.5.0 |
55 | */ |
56 | # if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) |
57 | # define OSSL_DEPRECATED(since) \ |
58 | __attribute__((deprecated("Since OpenSSL " # since))) |
59 | # define OSSL_DEPRECATED_FOR(since, message) \ |
60 | __attribute__((deprecated("Since OpenSSL " # since ";" message))) |
61 | # elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0) |
62 | # define OSSL_DEPRECATED(since) __attribute__((deprecated)) |
63 | # define OSSL_DEPRECATED_FOR(since, message) __attribute__((deprecated)) |
64 | # endif |
65 | # elif defined(__SUNPRO_C) |
66 | # if (__SUNPRO_C >= 0x5130) |
67 | # define OSSL_DEPRECATED(since) __attribute__ ((deprecated)) |
68 | # define OSSL_DEPRECATED_FOR(since, message) __attribute__ ((deprecated)) |
69 | # endif |
70 | # endif |
71 | # endif |
72 | # endif |
73 | |
74 | /* |
75 | * Still not defined? Then define no-op macros. This means these macros |
76 | * are unsuitable for use in a typedef. |
77 | */ |
78 | # ifndef OSSL_DEPRECATED |
79 | # define OSSL_DEPRECATED(since) extern |
80 | # define OSSL_DEPRECATED_FOR(since, message) extern |
81 | # endif |
82 | |
83 | /* |
84 | * Applications should use -DOPENSSL_API_COMPAT=<version> to suppress the |
85 | * declarations of functions deprecated in or before <version>. If this is |
86 | * undefined, the value of the macro OPENSSL_CONFIGURED_API (defined in |
87 | * <openssl/opensslconf.h>) is the default. |
88 | * |
89 | * For any version number up until version 1.1.x, <version> is expected to be |
90 | * the calculated version number 0xMNNFFPPSL. |
91 | * For version numbers 3.0 and on, <version> is expected to be a computation |
92 | * of the major and minor numbers in decimal using this formula: |
93 | * |
94 | * MAJOR * 10000 + MINOR * 100 |
95 | * |
96 | * So version 3.0 becomes 30000, version 3.2 becomes 30200, etc. |
97 | */ |
98 | |
99 | /* |
100 | * We use the OPENSSL_API_COMPAT value to define API level macros. These |
101 | * macros are used to enable or disable features at that API version boundary. |
102 | */ |
103 | |
104 | # ifdef OPENSSL_API_LEVEL |
105 | # error "OPENSSL_API_LEVEL must not be defined by application" |
106 | # endif |
107 | |
108 | /* |
109 | * We figure out what API level was intended by simple numeric comparison. |
110 | * The lowest old style number we recognise is 0x00908000L, so we take some |
111 | * safety margin and assume that anything below 0x00900000L is a new style |
112 | * number. This allows new versions up to and including v943.71.83. |
113 | */ |
114 | # ifdef OPENSSL_API_COMPAT |
115 | # if OPENSSL_API_COMPAT < 0x900000L |
116 | # define OPENSSL_API_LEVEL (OPENSSL_API_COMPAT) |
117 | # else |
118 | # define OPENSSL_API_LEVEL \ |
119 | (((OPENSSL_API_COMPAT >> 28) & 0xF) * 10000 \ |
120 | + ((OPENSSL_API_COMPAT >> 20) & 0xFF) * 100 \ |
121 | + ((OPENSSL_API_COMPAT >> 12) & 0xFF)) |
122 | # endif |
123 | # endif |
124 | |
125 | /* |
126 | * If OPENSSL_API_COMPAT wasn't given, we use default numbers to set |
127 | * the API compatibility level. |
128 | */ |
129 | # ifndef OPENSSL_API_LEVEL |
130 | # if OPENSSL_CONFIGURED_API > 0 |
131 | # define OPENSSL_API_LEVEL (OPENSSL_CONFIGURED_API) |
132 | # else |
133 | # define OPENSSL_API_LEVEL \ |
134 | (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100) |
135 | # endif |
136 | # endif |
137 | |
138 | # if OPENSSL_API_LEVEL > OPENSSL_CONFIGURED_API |
139 | # error "The requested API level higher than the configured API compatibility level" |
140 | # endif |
141 | |
142 | /* |
143 | * Check of sane values. |
144 | */ |
145 | /* Can't go higher than the current version. */ |
146 | # if OPENSSL_API_LEVEL > (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100) |
147 | # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level" |
148 | # endif |
149 | /* OpenSSL will have no version 2.y.z */ |
150 | # if OPENSSL_API_LEVEL < 30000 && OPENSSL_API_LEVEL >= 20000 |
151 | # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level" |
152 | # endif |
153 | /* Below 0.9.8 is unacceptably low */ |
154 | # if OPENSSL_API_LEVEL < 908 |
155 | # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level" |
156 | # endif |
157 | |
158 | /* |
159 | * Define macros for deprecation and simulated removal purposes. |
160 | * |
161 | * The macros OSSL_DEPRECATED_{major}_{minor} are always defined for |
162 | * all OpenSSL versions we care for. They can be used as attributes |
163 | * in function declarations where appropriate. |
164 | * |
165 | * The macros OPENSSL_NO_DEPRECATED_{major}_{minor} are defined for |
166 | * all OpenSSL versions up to or equal to the version given with |
167 | * OPENSSL_API_COMPAT. They are used as guards around anything that's |
168 | * deprecated up to that version, as an effect of the developer option |
169 | * 'no-deprecated'. |
170 | */ |
171 | |
172 | # undef OPENSSL_NO_DEPRECATED_3_0 |
173 | # undef OPENSSL_NO_DEPRECATED_1_1_1 |
174 | # undef OPENSSL_NO_DEPRECATED_1_1_0 |
175 | # undef OPENSSL_NO_DEPRECATED_1_0_2 |
176 | # undef OPENSSL_NO_DEPRECATED_1_0_1 |
177 | # undef OPENSSL_NO_DEPRECATED_1_0_0 |
178 | # undef OPENSSL_NO_DEPRECATED_0_9_8 |
179 | |
180 | # if OPENSSL_API_LEVEL >= 30000 |
181 | # ifndef OPENSSL_NO_DEPRECATED |
182 | # define OSSL_DEPRECATEDIN_3_0 OSSL_DEPRECATED(3.0) |
183 | # define OSSL_DEPRECATEDIN_3_0_FOR(msg) OSSL_DEPRECATED_FOR(3.0, msg) |
184 | # else |
185 | # define OPENSSL_NO_DEPRECATED_3_0 |
186 | # endif |
187 | # else |
188 | # define OSSL_DEPRECATEDIN_3_0 |
189 | # define OSSL_DEPRECATEDIN_3_0_FOR(msg) |
190 | # endif |
191 | # if OPENSSL_API_LEVEL >= 10101 |
192 | # ifndef OPENSSL_NO_DEPRECATED |
193 | # define OSSL_DEPRECATEDIN_1_1_1 OSSL_DEPRECATED(1.1.1) |
194 | # define OSSL_DEPRECATEDIN_1_1_1_FOR(msg) OSSL_DEPRECATED_FOR(1.1.1, msg) |
195 | # else |
196 | # define OPENSSL_NO_DEPRECATED_1_1_1 |
197 | # endif |
198 | # else |
199 | # define OSSL_DEPRECATEDIN_1_1_1 |
200 | # define OSSL_DEPRECATEDIN_1_1_1_FOR(msg) |
201 | # endif |
202 | # if OPENSSL_API_LEVEL >= 10100 |
203 | # ifndef OPENSSL_NO_DEPRECATED |
204 | # define OSSL_DEPRECATEDIN_1_1_0 OSSL_DEPRECATED(1.1.0) |
205 | # define OSSL_DEPRECATEDIN_1_1_0_FOR(msg) OSSL_DEPRECATED_FOR(1.1.0, msg) |
206 | # else |
207 | # define OPENSSL_NO_DEPRECATED_1_1_0 |
208 | # endif |
209 | # else |
210 | # define OSSL_DEPRECATEDIN_1_1_0 |
211 | # define OSSL_DEPRECATEDIN_1_1_0_FOR(msg) |
212 | # endif |
213 | # if OPENSSL_API_LEVEL >= 10002 |
214 | # ifndef OPENSSL_NO_DEPRECATED |
215 | # define OSSL_DEPRECATEDIN_1_0_2 OSSL_DEPRECATED(1.0.2) |
216 | # define OSSL_DEPRECATEDIN_1_0_2_FOR(msg) OSSL_DEPRECATED_FOR(1.0.2, msg) |
217 | # else |
218 | # define OPENSSL_NO_DEPRECATED_1_0_2 |
219 | # endif |
220 | # else |
221 | # define OSSL_DEPRECATEDIN_1_0_2 |
222 | # define OSSL_DEPRECATEDIN_1_0_2_FOR(msg) |
223 | # endif |
224 | # if OPENSSL_API_LEVEL >= 10001 |
225 | # ifndef OPENSSL_NO_DEPRECATED |
226 | # define OSSL_DEPRECATEDIN_1_0_1 OSSL_DEPRECATED(1.0.1) |
227 | # define OSSL_DEPRECATEDIN_1_0_1_FOR(msg) OSSL_DEPRECATED_FOR(1.0.1, msg) |
228 | # else |
229 | # define OPENSSL_NO_DEPRECATED_1_0_1 |
230 | # endif |
231 | # else |
232 | # define OSSL_DEPRECATEDIN_1_0_1 |
233 | # define OSSL_DEPRECATEDIN_1_0_1_FOR(msg) |
234 | # endif |
235 | # if OPENSSL_API_LEVEL >= 10000 |
236 | # ifndef OPENSSL_NO_DEPRECATED |
237 | # define OSSL_DEPRECATEDIN_1_0_0 OSSL_DEPRECATED(1.0.0) |
238 | # define OSSL_DEPRECATEDIN_1_0_0_FOR(msg) OSSL_DEPRECATED_FOR(1.0.0, msg) |
239 | # else |
240 | # define OPENSSL_NO_DEPRECATED_1_0_0 |
241 | # endif |
242 | # else |
243 | # define OSSL_DEPRECATEDIN_1_0_0 |
244 | # define OSSL_DEPRECATEDIN_1_0_0_FOR(msg) |
245 | # endif |
246 | # if OPENSSL_API_LEVEL >= 908 |
247 | # ifndef OPENSSL_NO_DEPRECATED |
248 | # define OSSL_DEPRECATEDIN_0_9_8 OSSL_DEPRECATED(0.9.8) |
249 | # define OSSL_DEPRECATEDIN_0_9_8_FOR(msg) OSSL_DEPRECATED_FOR(0.9.8, msg) |
250 | # else |
251 | # define OPENSSL_NO_DEPRECATED_0_9_8 |
252 | # endif |
253 | # else |
254 | # define OSSL_DEPRECATEDIN_0_9_8 |
255 | # define OSSL_DEPRECATEDIN_0_9_8_FOR(msg) |
256 | # endif |
257 | |
258 | /* |
259 | * Make our own variants of __FILE__ and __LINE__, depending on configuration |
260 | */ |
261 | |
262 | # ifndef OPENSSL_FILE |
263 | # ifdef OPENSSL_NO_FILENAMES |
264 | # define OPENSSL_FILE "" |
265 | # define OPENSSL_LINE 0 |
266 | # else |
267 | # define OPENSSL_FILE __FILE__ |
268 | # define OPENSSL_LINE __LINE__ |
269 | # endif |
270 | # endif |
271 | |
272 | /* |
273 | * __func__ was standardized in C99, so for any compiler that claims |
274 | * to implement that language level or newer, we assume we can safely |
275 | * use that symbol. |
276 | * |
277 | * GNU C also provides __FUNCTION__ since version 2, which predates |
278 | * C99. We can, however, only use this if __STDC_VERSION__ exists, |
279 | * as it's otherwise not allowed according to ISO C standards (C90). |
280 | * (compiling with GNU C's -pedantic tells us so) |
281 | * |
282 | * If none of the above applies, we check if the compiler is MSVC, |
283 | * and use __FUNCTION__ if that's the case. |
284 | */ |
285 | # ifndef OPENSSL_FUNC |
286 | # if defined(__STDC_VERSION__) |
287 | # if __STDC_VERSION__ >= 199901L |
288 | # define OPENSSL_FUNC __func__ |
289 | # elif defined(__GNUC__) && __GNUC__ >= 2 |
290 | # define OPENSSL_FUNC __FUNCTION__ |
291 | # endif |
292 | # elif defined(_MSC_VER) |
293 | # define OPENSSL_FUNC __FUNCTION__ |
294 | # endif |
295 | /* |
296 | * If all these possibilities are exhausted, we give up and use a |
297 | * static string. |
298 | */ |
299 | # ifndef OPENSSL_FUNC |
300 | # define OPENSSL_FUNC "(unknown function)" |
301 | # endif |
302 | # endif |
303 | |
304 | #endif /* OPENSSL_MACROS_H */ |
305 | |