2 * Copyright 2019-2023 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include <openssl/crypto.h>
11 #include "crypto/rand.h"
12 #include "crypto/dso_conf.h"
13 #include "internal/thread_once.h"
14 #include "internal/cryptlib.h"
15 #include "internal/e_os.h"
18 #if defined(__arm__) || defined(__arm) || defined(__aarch64__)
19 # include "arm_arch.h"
20 # define CPU_INFO_STR_LEN 128
21 #elif defined(__s390__) || defined(__s390x__)
22 # include "s390x_arch.h"
23 # define CPU_INFO_STR_LEN 2048
25 # define CPU_INFO_STR_LEN 128
28 /* extern declaration to avoid warning */
29 extern char ossl_cpu_info_str
[];
31 static char *seed_sources
= NULL
;
33 char ossl_cpu_info_str
[CPU_INFO_STR_LEN
] = "";
34 #define CPUINFO_PREFIX "CPUINFO: "
36 static CRYPTO_ONCE init_info
= CRYPTO_ONCE_STATIC_INIT
;
38 DEFINE_RUN_ONCE_STATIC(init_info_strings
)
40 #if defined(OPENSSL_CPUID_OBJ)
41 # if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
42 defined(__x86_64) || defined(__x86_64__) || \
43 defined(_M_AMD64) || defined(_M_X64)
46 BIO_snprintf(ossl_cpu_info_str
, sizeof(ossl_cpu_info_str
),
47 CPUINFO_PREFIX
"OPENSSL_ia32cap=0x%llx:0x%llx",
48 (unsigned long long)OPENSSL_ia32cap_P
[0] |
49 (unsigned long long)OPENSSL_ia32cap_P
[1] << 32,
50 (unsigned long long)OPENSSL_ia32cap_P
[2] |
51 (unsigned long long)OPENSSL_ia32cap_P
[3] << 32);
52 if ((env
= getenv("OPENSSL_ia32cap")) != NULL
)
53 BIO_snprintf(ossl_cpu_info_str
+ strlen(ossl_cpu_info_str
),
54 sizeof(ossl_cpu_info_str
) - strlen(ossl_cpu_info_str
),
56 # elif defined(__arm__) || defined(__arm) || defined(__aarch64__)
59 BIO_snprintf(ossl_cpu_info_str
, sizeof(ossl_cpu_info_str
),
60 CPUINFO_PREFIX
"OPENSSL_armcap=0x%x", OPENSSL_armcap_P
);
61 if ((env
= getenv("OPENSSL_armcap")) != NULL
)
62 BIO_snprintf(ossl_cpu_info_str
+ strlen(ossl_cpu_info_str
),
63 sizeof(ossl_cpu_info_str
) - strlen(ossl_cpu_info_str
),
65 # elif defined(__s390__) || defined(__s390x__)
68 BIO_snprintf(ossl_cpu_info_str
, sizeof(ossl_cpu_info_str
),
69 CPUINFO_PREFIX
"OPENSSL_s390xcap="
70 "stfle:0x%llx:0x%llx:0x%llx:0x%llx:"
76 "kmctr:0x%llx:0x%llx:"
83 OPENSSL_s390xcap_P
.stfle
[0], OPENSSL_s390xcap_P
.stfle
[1],
84 OPENSSL_s390xcap_P
.stfle
[2], OPENSSL_s390xcap_P
.stfle
[3],
85 OPENSSL_s390xcap_P
.kimd
[0], OPENSSL_s390xcap_P
.kimd
[1],
86 OPENSSL_s390xcap_P
.klmd
[0], OPENSSL_s390xcap_P
.klmd
[1],
87 OPENSSL_s390xcap_P
.km
[0], OPENSSL_s390xcap_P
.km
[1],
88 OPENSSL_s390xcap_P
.kmc
[0], OPENSSL_s390xcap_P
.kmc
[1],
89 OPENSSL_s390xcap_P
.kmac
[0], OPENSSL_s390xcap_P
.kmac
[1],
90 OPENSSL_s390xcap_P
.kmctr
[0], OPENSSL_s390xcap_P
.kmctr
[1],
91 OPENSSL_s390xcap_P
.kmo
[0], OPENSSL_s390xcap_P
.kmo
[1],
92 OPENSSL_s390xcap_P
.kmf
[0], OPENSSL_s390xcap_P
.kmf
[1],
93 OPENSSL_s390xcap_P
.prno
[0], OPENSSL_s390xcap_P
.prno
[1],
94 OPENSSL_s390xcap_P
.kma
[0], OPENSSL_s390xcap_P
.kma
[1],
95 OPENSSL_s390xcap_P
.pcc
[0], OPENSSL_s390xcap_P
.pcc
[1],
96 OPENSSL_s390xcap_P
.kdsa
[0], OPENSSL_s390xcap_P
.kdsa
[1]);
97 if ((env
= getenv("OPENSSL_s390xcap")) != NULL
)
98 BIO_snprintf(ossl_cpu_info_str
+ strlen(ossl_cpu_info_str
),
99 sizeof(ossl_cpu_info_str
) - strlen(ossl_cpu_info_str
),
105 static char seeds
[512] = "";
107 #define add_seeds_string(str) \
109 if (seeds[0] != '\0') \
110 OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \
111 OPENSSL_strlcat(seeds, str, sizeof(seeds)); \
113 #define add_seeds_stringlist(label, strlist) \
115 add_seeds_string(label "("); \
117 const char *dev[] = { strlist, NULL }; \
121 for (p = dev; *p != NULL; p++) { \
123 OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \
125 OPENSSL_strlcat(seeds, *p, sizeof(seeds)); \
128 OPENSSL_strlcat(seeds, ")", sizeof(seeds)); \
131 #ifdef OPENSSL_RAND_SEED_NONE
132 add_seeds_string("none");
134 #ifdef OPENSSL_RAND_SEED_RDTSC
135 add_seeds_string("rdtsc");
137 #ifdef OPENSSL_RAND_SEED_RDCPU
139 add_seeds_string("rndr ( rndrrs rndr )");
141 add_seeds_string("rdrand ( rdseed rdrand )");
144 #ifdef OPENSSL_RAND_SEED_LIBRANDOM
145 add_seeds_string("C-library-random");
147 #ifdef OPENSSL_RAND_SEED_GETRANDOM
148 add_seeds_string("getrandom-syscall");
150 #ifdef OPENSSL_RAND_SEED_DEVRANDOM
151 add_seeds_stringlist("random-device", DEVRANDOM
);
153 #ifdef OPENSSL_RAND_SEED_EGD
154 add_seeds_stringlist("EGD", DEVRANDOM_EGD
);
156 #ifdef OPENSSL_RAND_SEED_OS
157 add_seeds_string("os-specific");
159 seed_sources
= seeds
;
164 const char *OPENSSL_info(int t
)
167 * We don't care about the result. Worst case scenario, the strings
168 * won't be initialised, i.e. remain NULL, which means that the info
169 * isn't available anyway...
171 (void)RUN_ONCE(&init_info
, init_info_strings
);
174 case OPENSSL_INFO_CONFIG_DIR
:
176 case OPENSSL_INFO_ENGINES_DIR
:
178 case OPENSSL_INFO_MODULES_DIR
:
180 case OPENSSL_INFO_DSO_EXTENSION
:
181 return DSO_EXTENSION
;
182 case OPENSSL_INFO_DIR_FILENAME_SEPARATOR
:
187 #else /* Assume POSIX */
190 case OPENSSL_INFO_LIST_SEPARATOR
:
192 static const char list_sep
[] = { LIST_SEPARATOR_CHAR
, '\0' };
195 case OPENSSL_INFO_SEED_SOURCE
:
197 case OPENSSL_INFO_CPU_SETTINGS
:
199 * If successfully initialized, ossl_cpu_info_str will start
200 * with CPUINFO_PREFIX, if failed it will be an empty string.
201 * Strip away the CPUINFO_PREFIX which we don't need here.
203 if (ossl_cpu_info_str
[0] != '\0')
204 return ossl_cpu_info_str
+ strlen(CPUINFO_PREFIX
);