3 * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
11 #include <openssl/opensslconf.h>
12 #include <openssl/opensslv.h>
14 #ifndef OPENSSL_MACROS_H
15 # define OPENSSL_MACROS_H
17 /* Helper macros for CPP string composition */
18 # define OPENSSL_MSTR_HELPER(x) #x
19 # define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)
22 * Sometimes OPENSSSL_NO_xxx ends up with an empty file and some compilers
23 * don't like that. This will hopefully silence them.
25 # define NON_EMPTY_TRANSLATION_UNIT static void *dummy = &dummy;
28 * Generic deprecation macro
30 * If OPENSSL_SUPPRESS_DEPRECATED is defined, then OSSL_DEPRECATED and
31 * OSSL_DEPRECATED_FOR become no-ops
33 # ifndef OSSL_DEPRECATED
34 # undef OSSL_DEPRECATED_FOR
35 # ifndef OPENSSL_SUPPRESS_DEPRECATED
36 # if defined(__GNUC__)
38 * According to GCC documentation, deprecations with message appeared in
41 # if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
42 # define OSSL_DEPRECATED(since) \
43 __attribute__((deprecated("Since OpenSSL " # since)))
44 # define OSSL_DEPRECATED_FOR(since, message) \
45 __attribute__((deprecated("Since OpenSSL " # since ";" message)))
46 # elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0)
47 # define OSSL_DEPRECATED(since) __attribute__((deprecated))
48 # define OSSL_DEPRECATED_FOR(since, message) __attribute__((deprecated))
50 # elif defined(__SUNPRO_C)
51 # if (__SUNPRO_C >= 0x5130)
52 # define OSSL_DEPRECATED(since) __attribute__ ((deprecated))
53 # define OSSL_DEPRECATED_FOR(since, message) __attribute__ ((deprecated))
59 /* Still not defined? Then define empty macros */
60 # ifndef OSSL_DEPRECATED
61 # define OSSL_DEPRECATED(since)
62 # define OSSL_DEPRECATED_FOR(since, message)
66 * Applications should use -DOPENSSL_API_COMPAT=<version> to suppress the
67 * declarations of functions deprecated in or before <version>. If this is
68 * undefined, the value of the macro OPENSSL_CONFIGURED_API (defined in
69 * <openssl/opensslconf.h>) is the default.
71 * For any version number up until version 1.1.x, <version> is expected to be
72 * the calculated version number 0xMNNFFPPSL.
73 * For version numbers 3.0 and on, <version> is expected to be a computation
74 * of the major and minor numbers in decimal using this formula:
76 * MAJOR * 10000 + MINOR * 100
78 * So version 3.0 becomes 30000, version 3.2 becomes 30200, etc.
82 * We use the OPENSSL_API_COMPAT value to define API level macros. These
83 * macros are used to enable or disable features at that API version boundary.
86 # ifdef OPENSSL_API_LEVEL
87 # error "OPENSSL_API_LEVEL must not be defined by application"
91 * We figure out what API level was intended by simple numeric comparison.
92 * The lowest old style number we recognise is 0x00908000L, so we take some
93 * safety margin and assume that anything below 0x00900000L is a new style
94 * number. This allows new versions up to and including v943.71.83.
96 # ifdef OPENSSL_API_COMPAT
97 # if OPENSSL_API_COMPAT < 0x900000L
98 # define OPENSSL_API_LEVEL (OPENSSL_API_COMPAT)
100 # define OPENSSL_API_LEVEL \
101 (((OPENSSL_API_COMPAT >> 28) & 0xF) * 10000 \
102 + ((OPENSSL_API_COMPAT >> 20) & 0xFF) * 100 \
103 + ((OPENSSL_API_COMPAT >> 12) & 0xFF))
108 * If OPENSSL_API_COMPAT wasn't given, we use default numbers to set
109 * the API compatibility level.
111 # ifndef OPENSSL_API_LEVEL
112 # if OPENSSL_CONFIGURED_API > 0
113 # define OPENSSL_API_LEVEL (OPENSSL_CONFIGURED_API)
115 # define OPENSSL_API_LEVEL \
116 (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
120 # if OPENSSL_API_LEVEL > OPENSSL_CONFIGURED_API
121 # error "The requested API level higher than the configured API compatibility level"
125 * Check of sane values.
127 /* Can't go higher than the current version. */
128 # if OPENSSL_API_LEVEL > (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
129 # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
131 /* OpenSSL will have no version 2.y.z */
132 # if OPENSSL_API_LEVEL < 30000 && OPENSSL_API_LEVEL >= 20000
133 # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
135 /* Below 0.9.8 is unacceptably low */
136 # if OPENSSL_API_LEVEL < 908
137 # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
141 * Define macros for deprecation purposes. We always define the macros
142 * DEPERECATEDIN_{major}_{minor}() for all OpenSSL versions we care for,
143 * and OPENSSL_NO_DEPRECATED_{major}_{minor} to be used to check if
144 * removal of deprecated functions applies on that particular version.
147 # undef OPENSSL_NO_DEPRECATED_3_0
148 # undef OPENSSL_NO_DEPRECATED_1_1_1
149 # undef OPENSSL_NO_DEPRECATED_1_1_0
150 # undef OPENSSL_NO_DEPRECATED_1_0_2
151 # undef OPENSSL_NO_DEPRECATED_1_0_1
152 # undef OPENSSL_NO_DEPRECATED_1_0_0
153 # undef OPENSSL_NO_DEPRECATED_0_9_8
155 # if OPENSSL_API_LEVEL >= 30000
156 # ifndef OPENSSL_NO_DEPRECATED
157 # define DEPRECATEDIN_3_0(f) OSSL_DEPRECATED(3.0) f;
159 # define DEPRECATEDIN_3_0(f)
160 # define OPENSSL_NO_DEPRECATED_3_0
163 # define DEPRECATEDIN_3_0(f) f;
165 # if OPENSSL_API_LEVEL >= 10101
166 # ifndef OPENSSL_NO_DEPRECATED
167 # define DEPRECATEDIN_1_1_1(f) OSSL_DEPRECATED(1.1.1) f;
169 # define DEPRECATEDIN_1_1_1(f)
170 # define OPENSSL_NO_DEPRECATED_1_1_1
173 # define DEPRECATEDIN_1_1_1(f) f;
175 # if OPENSSL_API_LEVEL >= 10100
176 # ifndef OPENSSL_NO_DEPRECATED
177 # define DEPRECATEDIN_1_1_0(f) OSSL_DEPRECATED(1.1.0) f;
179 # define DEPRECATEDIN_1_1_0(f)
180 # define OPENSSL_NO_DEPRECATED_1_1_0
183 # define DEPRECATEDIN_1_1_0(f) f;
185 # if OPENSSL_API_LEVEL >= 10002
186 # ifndef OPENSSL_NO_DEPRECATED
187 # define DEPRECATEDIN_1_0_2(f) OSSL_DEPRECATED(1.0.2) f;
189 # define DEPRECATEDIN_1_0_2(f)
190 # define OPENSSL_NO_DEPRECATED_1_0_2
193 # define DEPRECATEDIN_1_0_2(f) f;
195 # if OPENSSL_API_LEVEL >= 10001
196 # ifndef OPENSSL_NO_DEPRECATED
197 # define DEPRECATEDIN_1_0_1(f) OSSL_DEPRECATED(1.0.1) f;
199 # define DEPRECATEDIN_1_0_1(f)
200 # define OPENSSL_NO_DEPRECATED_1_0_1
203 # define DEPRECATEDIN_1_0_1(f) f;
205 # if OPENSSL_API_LEVEL >= 10000
206 # ifndef OPENSSL_NO_DEPRECATED
207 # define DEPRECATEDIN_1_0_0(f) OSSL_DEPRECATED(1.0.0) f;
209 # define DEPRECATEDIN_1_0_0(f)
210 # define OPENSSL_NO_DEPRECATED_1_0_0
213 # define DEPRECATEDIN_1_0_0(f) f;
215 # if OPENSSL_API_LEVEL >= 908
216 # ifndef OPENSSL_NO_DEPRECATED
217 # define DEPRECATEDIN_0_9_8(f) OSSL_DEPRECATED(0.9.8) f;
219 # define DEPRECATEDIN_0_9_8(f)
220 # define OPENSSL_NO_DEPRECATED_0_9_8
223 # define DEPRECATEDIN_0_9_8(f) f;
227 * Make our own variants of __FILE__ and __LINE__, depending on configuration
230 # ifndef OPENSSL_FILE
231 # ifdef OPENSSL_NO_FILENAMES
232 # define OPENSSL_FILE ""
233 # define OPENSSL_LINE 0
235 # define OPENSSL_FILE __FILE__
236 # define OPENSSL_LINE __LINE__
241 * __func__ was standardized in C99, so for any compiler that claims
242 * to implement that language level or newer, we assume we can safely
245 * GNU C also provides __FUNCTION__ since version 2, which predates
246 * C99. We can, however, only use this if __STDC_VERSION__ exists,
247 * as it's otherwise not allowed according to ISO C standards (C90).
248 * (compiling with GNU C's -pedantic tells us so)
250 * If none of the above applies, we check if the compiler is MSVC,
251 * and use __FUNCTION__ if that's the case.
253 # ifndef OPENSSL_FUNC
254 # if defined(__STDC_VERSION__)
255 # if __STDC_VERSION__ >= 199901L
256 # define OPENSSL_FUNC __func__
257 # elif defined(__GNUC__) && __GNUC__ >= 2
258 # define OPENSSL_FUNC __FUNCTION__
260 # elif defined(_MSC_VER)
261 # define OPENSSL_FUNC __FUNCTION__
264 * If all these possibilities are exhausted, we give up and use a
267 # ifndef OPENSSL_FUNC
268 # define OPENSSL_FUNC "(unknown function)"
272 #endif /* OPENSSL_MACROS_H */