/src/openssl/crypto/info.c
Line | Count | Source |
1 | | /* |
2 | | * Copyright 2019-2024 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 | | #ifndef OPENSSL_NO_JITTER |
19 | | # include <stdio.h> |
20 | | # include <jitterentropy.h> |
21 | | #endif |
22 | | |
23 | | #if defined(__arm__) || defined(__arm) || defined(__aarch64__) |
24 | | # include "arm_arch.h" |
25 | | # define CPU_INFO_STR_LEN 128 |
26 | | #elif defined(__powerpc__) || defined(__POWERPC__) || defined(_ARCH_PPC) |
27 | | # include "crypto/ppc_arch.h" |
28 | | # define CPU_INFO_STR_LEN 128 |
29 | | #elif defined(__s390__) || defined(__s390x__) |
30 | | # include "s390x_arch.h" |
31 | | # define CPU_INFO_STR_LEN 2048 |
32 | | #elif defined(__riscv) |
33 | | # include "crypto/riscv_arch.h" |
34 | | # define CPU_INFO_STR_LEN 2048 |
35 | | #else |
36 | | # define CPU_INFO_STR_LEN 256 |
37 | | #endif |
38 | | |
39 | | /* extern declaration to avoid warning */ |
40 | | extern char ossl_cpu_info_str[]; |
41 | | |
42 | | static char *seed_sources = NULL; |
43 | | |
44 | | char ossl_cpu_info_str[CPU_INFO_STR_LEN] = ""; |
45 | 0 | #define CPUINFO_PREFIX "CPUINFO: " |
46 | | |
47 | | static CRYPTO_ONCE init_info = CRYPTO_ONCE_STATIC_INIT; |
48 | | |
49 | | DEFINE_RUN_ONCE_STATIC(init_info_strings) |
50 | 0 | { |
51 | 0 | #if defined(OPENSSL_CPUID_OBJ) |
52 | 0 | # if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \ |
53 | 0 | defined(__x86_64) || defined(__x86_64__) || \ |
54 | 0 | defined(_M_AMD64) || defined(_M_X64) |
55 | 0 | const char *env; |
56 | |
|
57 | 0 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
58 | 0 | CPUINFO_PREFIX "OPENSSL_ia32cap=0x%.16llx:0x%.16llx:0x%.16llx:0x%.16llx:0x%.16llx", |
59 | 0 | (unsigned long long)OPENSSL_ia32cap_P[0] | |
60 | 0 | (unsigned long long)OPENSSL_ia32cap_P[1] << 32, |
61 | 0 | (unsigned long long)OPENSSL_ia32cap_P[2] | |
62 | 0 | (unsigned long long)OPENSSL_ia32cap_P[3] << 32, |
63 | 0 | (unsigned long long)OPENSSL_ia32cap_P[4] | |
64 | 0 | (unsigned long long)OPENSSL_ia32cap_P[5] << 32, |
65 | 0 | (unsigned long long)OPENSSL_ia32cap_P[6] | |
66 | 0 | (unsigned long long)OPENSSL_ia32cap_P[7] << 32, |
67 | 0 | (unsigned long long)OPENSSL_ia32cap_P[8] | |
68 | 0 | (unsigned long long)OPENSSL_ia32cap_P[9] << 32); |
69 | |
|
70 | 0 | if ((env = getenv("OPENSSL_ia32cap")) != NULL) |
71 | 0 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
72 | 0 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
73 | 0 | " env:%s", env); |
74 | | # elif defined(__arm__) || defined(__arm) || defined(__aarch64__) |
75 | | const char *env; |
76 | | |
77 | | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
78 | | CPUINFO_PREFIX "OPENSSL_armcap=0x%x", OPENSSL_armcap_P); |
79 | | if ((env = getenv("OPENSSL_armcap")) != NULL) |
80 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
81 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
82 | | " env:%s", env); |
83 | | # elif defined(__powerpc__) || defined(__POWERPC__) || defined(_ARCH_PPC) |
84 | | const char *env; |
85 | | |
86 | | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
87 | | CPUINFO_PREFIX "OPENSSL_ppccap=0x%x", OPENSSL_ppccap_P); |
88 | | if ((env = getenv("OPENSSL_ppccap")) != NULL) |
89 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
90 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
91 | | " env:%s", env); |
92 | | # elif defined(__s390__) || defined(__s390x__) |
93 | | const char *env; |
94 | | |
95 | | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
96 | | CPUINFO_PREFIX "OPENSSL_s390xcap=" |
97 | | "stfle:0x%llx:0x%llx:0x%llx:0x%llx:" |
98 | | "kimd:0x%llx:0x%llx:" |
99 | | "klmd:0x%llx:0x%llx:" |
100 | | "km:0x%llx:0x%llx:" |
101 | | "kmc:0x%llx:0x%llx:" |
102 | | "kmac:0x%llx:0x%llx:" |
103 | | "kmctr:0x%llx:0x%llx:" |
104 | | "kmo:0x%llx:0x%llx:" |
105 | | "kmf:0x%llx:0x%llx:" |
106 | | "prno:0x%llx:0x%llx:" |
107 | | "kma:0x%llx:0x%llx:" |
108 | | "pcc:0x%llx:0x%llx:" |
109 | | "kdsa:0x%llx:0x%llx", |
110 | | OPENSSL_s390xcap_P.stfle[0], OPENSSL_s390xcap_P.stfle[1], |
111 | | OPENSSL_s390xcap_P.stfle[2], OPENSSL_s390xcap_P.stfle[3], |
112 | | OPENSSL_s390xcap_P.kimd[0], OPENSSL_s390xcap_P.kimd[1], |
113 | | OPENSSL_s390xcap_P.klmd[0], OPENSSL_s390xcap_P.klmd[1], |
114 | | OPENSSL_s390xcap_P.km[0], OPENSSL_s390xcap_P.km[1], |
115 | | OPENSSL_s390xcap_P.kmc[0], OPENSSL_s390xcap_P.kmc[1], |
116 | | OPENSSL_s390xcap_P.kmac[0], OPENSSL_s390xcap_P.kmac[1], |
117 | | OPENSSL_s390xcap_P.kmctr[0], OPENSSL_s390xcap_P.kmctr[1], |
118 | | OPENSSL_s390xcap_P.kmo[0], OPENSSL_s390xcap_P.kmo[1], |
119 | | OPENSSL_s390xcap_P.kmf[0], OPENSSL_s390xcap_P.kmf[1], |
120 | | OPENSSL_s390xcap_P.prno[0], OPENSSL_s390xcap_P.prno[1], |
121 | | OPENSSL_s390xcap_P.kma[0], OPENSSL_s390xcap_P.kma[1], |
122 | | OPENSSL_s390xcap_P.pcc[0], OPENSSL_s390xcap_P.pcc[1], |
123 | | OPENSSL_s390xcap_P.kdsa[0], OPENSSL_s390xcap_P.kdsa[1]); |
124 | | if ((env = getenv("OPENSSL_s390xcap")) != NULL) |
125 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
126 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
127 | | " env:%s", env); |
128 | | # elif defined(__riscv) |
129 | | const char *env; |
130 | | char sep = '='; |
131 | | |
132 | | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), |
133 | | CPUINFO_PREFIX "OPENSSL_riscvcap"); |
134 | | for (size_t i = 0; i < kRISCVNumCaps; ++i) { |
135 | | if (OPENSSL_riscvcap_P[RISCV_capabilities[i].index] |
136 | | & (1 << RISCV_capabilities[i].bit_offset)) { |
137 | | /* Match, display the name */ |
138 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
139 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
140 | | "%c%s", sep, RISCV_capabilities[i].name); |
141 | | /* Only the first sep is '=' */ |
142 | | sep = '_'; |
143 | | } |
144 | | } |
145 | | /* If no capability is found, add back the = */ |
146 | | if (sep == '=') { |
147 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
148 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
149 | | "%c", sep); |
150 | | } |
151 | | if ((env = getenv("OPENSSL_riscvcap")) != NULL) |
152 | | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), |
153 | | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), |
154 | | " env:%s", env); |
155 | | # endif |
156 | 0 | #endif |
157 | |
|
158 | 0 | { |
159 | 0 | static char seeds[512] = ""; |
160 | |
|
161 | 0 | #define add_seeds_string(str) \ |
162 | 0 | do { \ |
163 | 0 | if (seeds[0] != '\0') \ |
164 | 0 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \ |
165 | 0 | OPENSSL_strlcat(seeds, str, sizeof(seeds)); \ |
166 | 0 | } while (0) |
167 | 0 | #define add_seeds_stringlist(label, strlist) \ |
168 | 0 | do { \ |
169 | 0 | add_seeds_string(label "("); \ |
170 | 0 | { \ |
171 | 0 | const char *dev[] = { strlist, NULL }; \ |
172 | 0 | const char **p; \ |
173 | 0 | int first = 1; \ |
174 | 0 | \ |
175 | 0 | for (p = dev; *p != NULL; p++) { \ |
176 | 0 | if (!first) \ |
177 | 0 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \ |
178 | 0 | first = 0; \ |
179 | 0 | OPENSSL_strlcat(seeds, *p, sizeof(seeds)); \ |
180 | 0 | } \ |
181 | 0 | } \ |
182 | 0 | OPENSSL_strlcat(seeds, ")", sizeof(seeds)); \ |
183 | 0 | } while (0) |
184 | |
|
185 | | #ifdef OPENSSL_RAND_SEED_NONE |
186 | | add_seeds_string("none"); |
187 | | #endif |
188 | | #ifdef OPENSSL_RAND_SEED_RDTSC |
189 | | add_seeds_string("rdtsc"); |
190 | | #endif |
191 | | #ifdef OPENSSL_RAND_SEED_RDCPU |
192 | | # ifdef __aarch64__ |
193 | | add_seeds_string("rndr ( rndrrs rndr )"); |
194 | | # else |
195 | | add_seeds_string("rdrand ( rdseed rdrand )"); |
196 | | # endif |
197 | | #endif |
198 | | #ifdef OPENSSL_RAND_SEED_GETRANDOM |
199 | | add_seeds_string("getrandom-syscall"); |
200 | | #endif |
201 | | #ifdef OPENSSL_RAND_SEED_DEVRANDOM |
202 | | add_seeds_stringlist("random-device", DEVRANDOM); |
203 | | #endif |
204 | | #ifdef OPENSSL_RAND_SEED_EGD |
205 | | add_seeds_stringlist("EGD", DEVRANDOM_EGD); |
206 | | #endif |
207 | 0 | #ifdef OPENSSL_RAND_SEED_OS |
208 | 0 | add_seeds_string("os-specific"); |
209 | 0 | #endif |
210 | | #ifndef OPENSSL_NO_JITTER |
211 | | { |
212 | | char buf[32]; |
213 | | |
214 | | BIO_snprintf(buf, sizeof(buf), "JITTER (%d)", jent_version()); |
215 | | add_seeds_string(buf); |
216 | | } |
217 | | #endif |
218 | 0 | seed_sources = seeds; |
219 | 0 | } |
220 | 0 | return 1; |
221 | 0 | } |
222 | | |
223 | | const char *OPENSSL_info(int t) |
224 | 0 | { |
225 | | /* |
226 | | * We don't care about the result. Worst case scenario, the strings |
227 | | * won't be initialised, i.e. remain NULL, which means that the info |
228 | | * isn't available anyway... |
229 | | */ |
230 | 0 | (void)RUN_ONCE(&init_info, init_info_strings); |
231 | |
|
232 | 0 | switch (t) { |
233 | 0 | case OPENSSL_INFO_CONFIG_DIR: |
234 | 0 | return ossl_get_openssldir(); |
235 | 0 | case OPENSSL_INFO_ENGINES_DIR: |
236 | 0 | return ossl_get_enginesdir(); |
237 | 0 | case OPENSSL_INFO_MODULES_DIR: |
238 | 0 | return ossl_get_modulesdir(); |
239 | 0 | case OPENSSL_INFO_DSO_EXTENSION: |
240 | 0 | return DSO_EXTENSION; |
241 | 0 | case OPENSSL_INFO_DIR_FILENAME_SEPARATOR: |
242 | | #if defined(_WIN32) |
243 | | return "\\"; |
244 | | #elif defined(__VMS) |
245 | | return ""; |
246 | | #else /* Assume POSIX */ |
247 | 0 | return "/"; |
248 | 0 | #endif |
249 | 0 | case OPENSSL_INFO_LIST_SEPARATOR: |
250 | 0 | { |
251 | 0 | static const char list_sep[] = { LIST_SEPARATOR_CHAR, '\0' }; |
252 | 0 | return list_sep; |
253 | 0 | } |
254 | 0 | case OPENSSL_INFO_SEED_SOURCE: |
255 | 0 | return seed_sources; |
256 | 0 | case OPENSSL_INFO_CPU_SETTINGS: |
257 | | /* |
258 | | * If successfully initialized, ossl_cpu_info_str will start |
259 | | * with CPUINFO_PREFIX, if failed it will be an empty string. |
260 | | * Strip away the CPUINFO_PREFIX which we don't need here. |
261 | | */ |
262 | 0 | if (ossl_cpu_info_str[0] != '\0') |
263 | 0 | return ossl_cpu_info_str + strlen(CPUINFO_PREFIX); |
264 | 0 | break; |
265 | 0 | case OPENSSL_INFO_WINDOWS_CONTEXT: |
266 | 0 | return ossl_get_wininstallcontext(); |
267 | 0 | default: |
268 | 0 | break; |
269 | 0 | } |
270 | | /* Not an error */ |
271 | 0 | return NULL; |
272 | 0 | } |