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
33 # ifndef OSSL_DEPRECATED
34 # ifndef OPENSSL_SUPPRESS_DEPRECATED
35 # if defined(__GNUC__)
36 # if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 0)
37 # define OSSL_DEPRECATED __attribute__((deprecated))
39 # elif defined(__SUNPRO_C)
40 # if (__SUNPRO_C >= 0x5130)
41 # define OSSL_DEPRECATED __attribute__ ((deprecated))
47 /* Still not defined? Then define empty macros */
48 # ifndef OSSL_DEPRECATED
49 # define OSSL_DEPRECATED
53 * Applications should use -DOPENSSL_API_COMPAT=<version> to suppress the
54 * declarations of functions deprecated in or before <version>. If this is
55 * undefined, the value of the macro OPENSSL_CONFIGURED_API (defined in
56 * <openssl/opensslconf.h>) is the default.
58 * For any version number up until version 1.1.x, <version> is expected to be
59 * the calculated version number 0xMNNFFPPSL.
60 * For version numbers 3.0 and on, <version> is expected to be a computation
61 * of the major and minor numbers in decimal using this formula:
63 * MAJOR * 10000 + MINOR * 100
65 * So version 3.0 becomes 30000, version 3.2 becomes 30200, etc.
69 * We use the OPENSSL_API_COMPAT value to define API level macros. These
70 * macros are used to enable or disable features at that API version boundary.
73 # ifdef OPENSSL_API_LEVEL
74 # error "OPENSSL_API_LEVEL must not be defined by application"
78 * We figure out what API level was intended by simple numeric comparison.
79 * The lowest old style number we recognise is 0x00908000L, so we take some
80 * safety margin and assume that anything below 0x00900000L is a new style
81 * number. This allows new versions up to and including v943.71.83.
83 # ifdef OPENSSL_API_COMPAT
84 # if OPENSSL_API_COMPAT < 0x900000L
85 # define OPENSSL_API_LEVEL (OPENSSL_API_COMPAT)
87 # define OPENSSL_API_LEVEL \
88 (((OPENSSL_API_COMPAT >> 28) & 0xF) * 10000 \
89 + ((OPENSSL_API_COMPAT >> 20) & 0xFF) * 100 \
90 + ((OPENSSL_API_COMPAT >> 12) & 0xFF))
95 * If OPENSSL_API_COMPAT wasn't given, we use default numbers to set
96 * the API compatibility level.
98 # ifndef OPENSSL_API_LEVEL
99 # if OPENSSL_CONFIGURED_API > 0
100 # define OPENSSL_API_LEVEL (OPENSSL_CONFIGURED_API)
102 # define OPENSSL_API_LEVEL \
103 (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
107 # if OPENSSL_API_LEVEL > OPENSSL_CONFIGURED_API
108 # error "The requested API level higher than the configured API compatibility level"
112 * Check of sane values.
114 /* Can't go higher than the current version. */
115 # if OPENSSL_API_LEVEL > (OPENSSL_VERSION_MAJOR * 10000 + OPENSSL_VERSION_MINOR * 100)
116 # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
118 /* OpenSSL will have no version 2.y.z */
119 # if OPENSSL_API_LEVEL < 30000 && OPENSSL_API_LEVEL >= 20000
120 # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
122 /* Below 0.9.8 is unacceptably low */
123 # if OPENSSL_API_LEVEL < 908
124 # error "OPENSSL_API_COMPAT expresses an impossible API compatibility level"
128 * Define macros for deprecation purposes. We always define the macros
129 * DEPERECATEDIN_{major}_{minor}() for all OpenSSL versions we care for,
130 * and OPENSSL_NO_DEPRECATED_{major}_{minor} to be used to check if
131 * removal of deprecated functions applies on that particular version.
134 # undef OPENSSL_NO_DEPRECATED_3_0
135 # undef OPENSSL_NO_DEPRECATED_1_1_1
136 # undef OPENSSL_NO_DEPRECATED_1_1_0
137 # undef OPENSSL_NO_DEPRECATED_1_0_2
138 # undef OPENSSL_NO_DEPRECATED_1_0_1
139 # undef OPENSSL_NO_DEPRECATED_1_0_0
140 # undef OPENSSL_NO_DEPRECATED_0_9_8
142 # if OPENSSL_API_LEVEL >= 30000
143 # ifndef OPENSSL_NO_DEPRECATED
144 # define DEPRECATEDIN_3_0(f) OSSL_DEPRECATED f;
146 # define DEPRECATEDIN_3_0(f)
147 # define OPENSSL_NO_DEPRECATED_3_0
150 # define DEPRECATEDIN_3_0(f) f;
152 # if OPENSSL_API_LEVEL >= 10101
153 # ifndef OPENSSL_NO_DEPRECATED
154 # define DEPRECATEDIN_1_1_1(f) OSSL_DEPRECATED f;
156 # define DEPRECATEDIN_1_1_1(f)
157 # define OPENSSL_NO_DEPRECATED_1_1_1
160 # define DEPRECATEDIN_1_1_1(f) f;
162 # if OPENSSL_API_LEVEL >= 10100
163 # ifndef OPENSSL_NO_DEPRECATED
164 # define DEPRECATEDIN_1_1_0(f) OSSL_DEPRECATED f;
166 # define DEPRECATEDIN_1_1_0(f)
167 # define OPENSSL_NO_DEPRECATED_1_1_0
170 # define DEPRECATEDIN_1_1_0(f) f;
172 # if OPENSSL_API_LEVEL >= 10002
173 # ifndef OPENSSL_NO_DEPRECATED
174 # define DEPRECATEDIN_1_0_2(f) OSSL_DEPRECATED f;
176 # define DEPRECATEDIN_1_0_2(f)
177 # define OPENSSL_NO_DEPRECATED_1_0_2
180 # define DEPRECATEDIN_1_0_2(f) f;
182 # if OPENSSL_API_LEVEL >= 10001
183 # ifndef OPENSSL_NO_DEPRECATED
184 # define DEPRECATEDIN_1_0_1(f) OSSL_DEPRECATED f;
186 # define DEPRECATEDIN_1_0_1(f)
187 # define OPENSSL_NO_DEPRECATED_1_0_1
190 # define DEPRECATEDIN_1_0_1(f) f;
192 # if OPENSSL_API_LEVEL >= 10000
193 # ifndef OPENSSL_NO_DEPRECATED
194 # define DEPRECATEDIN_1_0_0(f) OSSL_DEPRECATED f;
196 # define DEPRECATEDIN_1_0_0(f)
197 # define OPENSSL_NO_DEPRECATED_1_0_0
200 # define DEPRECATEDIN_1_0_0(f) f;
202 # if OPENSSL_API_LEVEL >= 908
203 # ifndef OPENSSL_NO_DEPRECATED
204 # define DEPRECATEDIN_0_9_8(f) OSSL_DEPRECATED f;
206 # define DEPRECATEDIN_0_9_8(f)
207 # define OPENSSL_NO_DEPRECATED_0_9_8
210 # define DEPRECATEDIN_0_9_8(f) f;
214 * Make our own variants of __FILE__ and __LINE__, depending on configuration
217 # ifndef OPENSSL_FILE
218 # ifdef OPENSSL_NO_FILENAMES
219 # define OPENSSL_FILE ""
220 # define OPENSSL_LINE 0
222 # define OPENSSL_FILE __FILE__
223 # define OPENSSL_LINE __LINE__
228 * __func__ was standardized in C99, so for any compiler that claims
229 * to implement that language level or newer, we assume we can safely
232 * GNU C also provides __FUNCTION__ since version 2, which predates
233 * C99. We can, however, only use this if __STDC_VERSION__ exists,
234 * as it's otherwise not allowed according to ISO C standards (C90).
235 * (compiling with GNU C's -pedantic tells us so)
237 * If none of the above applies, we check if the compiler is MSVC,
238 * and use __FUNCTION__ if that's the case.
240 # ifndef OPENSSL_FUNC
241 # if defined(__STDC_VERSION__)
242 # if __STDC_VERSION__ >= 199901L
243 # define OPENSSL_FUNC __func__
244 # elif defined(__GNUC__) && __GNUC__ >= 2
245 # define OPENSSL_FUNC __FUNCTION__
247 # elif defined(_MSC_VER)
248 # define OPENSSL_FUNC __FUNCTION__
251 * If all these possibilities are exhausted, we give up and use a
254 # ifndef OPENSSL_FUNC
255 # define OPENSSL_FUNC "(unknown function)"
259 #endif /* OPENSSL_MACROS_H */