/src/openssl33/crypto/info.c
Line | Count | Source |
1 | | /* |
2 | | * Copyright 2019-2025 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 | | #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" |
16 | | #include "buildinf.h" |
17 | | |
18 | | #if defined(__arm__) || defined(__arm) || defined(__aarch64__) |
19 | | # include "arm_arch.h" |
20 | | # define CPU_INFO_STR_LEN 128 |
21 | | #elif defined(__powerpc__) || defined(__POWERPC__) || defined(_ARCH_PPC) |
22 | | # include "crypto/ppc_arch.h" |
23 | | # define CPU_INFO_STR_LEN 128 |
24 | | #elif defined(__s390__) || defined(__s390x__) |
25 | | # include "s390x_arch.h" |
26 | | # define CPU_INFO_STR_LEN 2048 |
27 | | #else |
28 | | # define CPU_INFO_STR_LEN 128 |
29 | | #endif |
30 | | |
31 | | /* extern declaration to avoid warning */ |
32 | | extern char ossl_cpu_info_str[]; |
33 | | |
34 | | static char *seed_sources = NULL; |
35 | | |
36 | | char ossl_cpu_info_str[CPU_INFO_STR_LEN] = ""; |
37 | 0 | #define CPUINFO_PREFIX "CPUINFO: " |
38 | | |
39 | | static CRYPTO_ONCE init_info = CRYPTO_ONCE_STATIC_INIT; |
40 | | |
41 | | DEFINE_RUN_ONCE_STATIC(init_info_strings) |
42 | 0 | { |
43 | 0 | #if defined(OPENSSL_CPUID_OBJ) |
44 | 0 | # if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \ |
45 | 0 | defined(__x86_64) || defined(__x86_64__) || \ |
46 | 0 | defined(_M_AMD64) || defined(_M_X64) |
47 | 0 | const char *env; |
48 | |
|
49 | 0 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
50 | 0 | CPUINFO_PREFIX "OPENSSL_ia32cap=0x%llx:0x%llx", |
51 | 0 | (unsigned long long)OPENSSL_ia32cap_P[0] | |
52 | 0 | (unsigned long long)OPENSSL_ia32cap_P[1] << 32, |
53 | 0 | (unsigned long long)OPENSSL_ia32cap_P[2] | |
54 | 0 | (unsigned long long)OPENSSL_ia32cap_P[3] << 32); |
55 | 0 | if ((env = getenv("OPENSSL_ia32cap")) != NULL) |
56 | 0 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
57 | 0 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
58 | 0 | " env:%s", env); |
59 | | # elif defined(__arm__) || defined(__arm) || defined(__aarch64__) |
60 | | const char *env; |
61 | | |
62 | | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
63 | | CPUINFO_PREFIX "OPENSSL_armcap=0x%x", OPENSSL_armcap_P); |
64 | | if ((env = getenv("OPENSSL_armcap")) != NULL) |
65 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
66 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
67 | | " env:%s", env); |
68 | | # elif defined(__powerpc__) || defined(__POWERPC__) || defined(_ARCH_PPC) |
69 | | const char *env; |
70 | | |
71 | | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
72 | | CPUINFO_PREFIX "OPENSSL_ppccap=0x%x", OPENSSL_ppccap_P); |
73 | | if ((env = getenv("OPENSSL_ppccap")) != NULL) |
74 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
75 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
76 | | " env:%s", env); |
77 | | # elif defined(__s390__) || defined(__s390x__) |
78 | | const char *env; |
79 | | |
80 | | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
81 | | CPUINFO_PREFIX "OPENSSL_s390xcap=" |
82 | | "stfle:0x%llx:0x%llx:0x%llx:0x%llx:" |
83 | | "kimd:0x%llx:0x%llx:" |
84 | | "klmd:0x%llx:0x%llx:" |
85 | | "km:0x%llx:0x%llx:" |
86 | | "kmc:0x%llx:0x%llx:" |
87 | | "kmac:0x%llx:0x%llx:" |
88 | | "kmctr:0x%llx:0x%llx:" |
89 | | "kmo:0x%llx:0x%llx:" |
90 | | "kmf:0x%llx:0x%llx:" |
91 | | "prno:0x%llx:0x%llx:" |
92 | | "kma:0x%llx:0x%llx:" |
93 | | "pcc:0x%llx:0x%llx:" |
94 | | "kdsa:0x%llx:0x%llx", |
95 | | OPENSSL_s390xcap_P.stfle[0], OPENSSL_s390xcap_P.stfle[1], |
96 | | OPENSSL_s390xcap_P.stfle[2], OPENSSL_s390xcap_P.stfle[3], |
97 | | OPENSSL_s390xcap_P.kimd[0], OPENSSL_s390xcap_P.kimd[1], |
98 | | OPENSSL_s390xcap_P.klmd[0], OPENSSL_s390xcap_P.klmd[1], |
99 | | OPENSSL_s390xcap_P.km[0], OPENSSL_s390xcap_P.km[1], |
100 | | OPENSSL_s390xcap_P.kmc[0], OPENSSL_s390xcap_P.kmc[1], |
101 | | OPENSSL_s390xcap_P.kmac[0], OPENSSL_s390xcap_P.kmac[1], |
102 | | OPENSSL_s390xcap_P.kmctr[0], OPENSSL_s390xcap_P.kmctr[1], |
103 | | OPENSSL_s390xcap_P.kmo[0], OPENSSL_s390xcap_P.kmo[1], |
104 | | OPENSSL_s390xcap_P.kmf[0], OPENSSL_s390xcap_P.kmf[1], |
105 | | OPENSSL_s390xcap_P.prno[0], OPENSSL_s390xcap_P.prno[1], |
106 | | OPENSSL_s390xcap_P.kma[0], OPENSSL_s390xcap_P.kma[1], |
107 | | OPENSSL_s390xcap_P.pcc[0], OPENSSL_s390xcap_P.pcc[1], |
108 | | OPENSSL_s390xcap_P.kdsa[0], OPENSSL_s390xcap_P.kdsa[1]); |
109 | | if ((env = getenv("OPENSSL_s390xcap")) != NULL) |
110 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
111 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
112 | | " env:%s", env); |
113 | | # endif |
114 | 0 | #endif |
115 | |
|
116 | 0 | { |
117 | 0 | static char seeds[512] = ""; |
118 | |
|
119 | 0 | #define add_seeds_string(str) \ |
120 | 0 | do { \ |
121 | 0 | if (seeds[0] != '\0') \ |
122 | 0 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \ |
123 | 0 | OPENSSL_strlcat(seeds, str, sizeof(seeds)); \ |
124 | 0 | } while (0) |
125 | 0 | #define add_seeds_stringlist(label, strlist) \ |
126 | 0 | do { \ |
127 | 0 | add_seeds_string(label "("); \ |
128 | 0 | { \ |
129 | 0 | const char *dev[] = { strlist, NULL }; \ |
130 | 0 | const char **p; \ |
131 | 0 | int first = 1; \ |
132 | 0 | \ |
133 | 0 | for (p = dev; *p != NULL; p++) { \ |
134 | 0 | if (!first) \ |
135 | 0 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \ |
136 | 0 | first = 0; \ |
137 | 0 | OPENSSL_strlcat(seeds, *p, sizeof(seeds)); \ |
138 | 0 | } \ |
139 | 0 | } \ |
140 | 0 | OPENSSL_strlcat(seeds, ")", sizeof(seeds)); \ |
141 | 0 | } while (0) |
142 | |
|
143 | | #ifdef OPENSSL_RAND_SEED_NONE |
144 | | add_seeds_string("none"); |
145 | | #endif |
146 | | #ifdef OPENSSL_RAND_SEED_RDTSC |
147 | | add_seeds_string("rdtsc"); |
148 | | #endif |
149 | | #ifdef OPENSSL_RAND_SEED_RDCPU |
150 | | # ifdef __aarch64__ |
151 | | add_seeds_string("rndr ( rndrrs rndr )"); |
152 | | # else |
153 | | add_seeds_string("rdrand ( rdseed rdrand )"); |
154 | | # endif |
155 | | #endif |
156 | | #ifdef OPENSSL_RAND_SEED_LIBRANDOM |
157 | | add_seeds_string("C-library-random"); |
158 | | #endif |
159 | | #ifdef OPENSSL_RAND_SEED_GETRANDOM |
160 | | add_seeds_string("getrandom-syscall"); |
161 | | #endif |
162 | | #ifdef OPENSSL_RAND_SEED_DEVRANDOM |
163 | | add_seeds_stringlist("random-device", DEVRANDOM); |
164 | | #endif |
165 | | #ifdef OPENSSL_RAND_SEED_EGD |
166 | | add_seeds_stringlist("EGD", DEVRANDOM_EGD); |
167 | | #endif |
168 | 0 | #ifdef OPENSSL_RAND_SEED_OS |
169 | 0 | add_seeds_string("os-specific"); |
170 | 0 | #endif |
171 | 0 | seed_sources = seeds; |
172 | 0 | } |
173 | 0 | return 1; |
174 | 0 | } |
175 | | |
176 | | const char *OPENSSL_info(int t) |
177 | 0 | { |
178 | | /* |
179 | | * We don't care about the result. Worst case scenario, the strings |
180 | | * won't be initialised, i.e. remain NULL, which means that the info |
181 | | * isn't available anyway... |
182 | | */ |
183 | 0 | (void)RUN_ONCE(&init_info, init_info_strings); |
184 | |
|
185 | 0 | switch (t) { |
186 | 0 | case OPENSSL_INFO_CONFIG_DIR: |
187 | 0 | return OPENSSLDIR; |
188 | 0 | case OPENSSL_INFO_ENGINES_DIR: |
189 | 0 | return ENGINESDIR; |
190 | 0 | case OPENSSL_INFO_MODULES_DIR: |
191 | 0 | return MODULESDIR; |
192 | 0 | case OPENSSL_INFO_DSO_EXTENSION: |
193 | 0 | return DSO_EXTENSION; |
194 | 0 | case OPENSSL_INFO_DIR_FILENAME_SEPARATOR: |
195 | | #if defined(_WIN32) |
196 | | return "\\"; |
197 | | #elif defined(__VMS) |
198 | | return ""; |
199 | | #else /* Assume POSIX */ |
200 | 0 | return "/"; |
201 | 0 | #endif |
202 | 0 | case OPENSSL_INFO_LIST_SEPARATOR: |
203 | 0 | { |
204 | 0 | static const char list_sep[] = { LIST_SEPARATOR_CHAR, '\0' }; |
205 | 0 | return list_sep; |
206 | 0 | } |
207 | 0 | case OPENSSL_INFO_SEED_SOURCE: |
208 | 0 | return seed_sources; |
209 | 0 | case OPENSSL_INFO_CPU_SETTINGS: |
210 | | /* |
211 | | * If successfully initialized, ossl_cpu_info_str will start |
212 | | * with CPUINFO_PREFIX, if failed it will be an empty string. |
213 | | * Strip away the CPUINFO_PREFIX which we don't need here. |
214 | | */ |
215 | 0 | if (ossl_cpu_info_str[0] != '\0') |
216 | 0 | return ossl_cpu_info_str + strlen(CPUINFO_PREFIX); |
217 | 0 | break; |
218 | 0 | default: |
219 | 0 | break; |
220 | 0 | } |
221 | | /* Not an error */ |
222 | 0 | return NULL; |
223 | 0 | } |