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