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0109e030 RL |
1 | /* |
2 | * Copyright 2019 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 | ||
0109e030 | 10 | #include <openssl/crypto.h> |
2e912f63 | 11 | #include "crypto/rand.h" |
25f2138b | 12 | #include "crypto/dso_conf.h" |
363e941e BE |
13 | #include "internal/thread_once.h" |
14 | #include "internal/cryptlib.h" | |
0109e030 | 15 | #include "e_os.h" |
096978f0 | 16 | #include "buildinf.h" |
363e941e BE |
17 | |
18 | #if defined(__arm__) || defined(__arm) || defined(__aarch64__) | |
19 | # include "arm_arch.h" | |
20 | #endif | |
21 | ||
22 | /* extern declaration to avoid warning */ | |
23 | extern char ossl_cpu_info_str[]; | |
096978f0 RL |
24 | |
25 | static char *seed_sources = NULL; | |
363e941e BE |
26 | |
27 | char ossl_cpu_info_str[128] = ""; | |
28 | #define CPUINFO_PREFIX "CPUINFO: " | |
29 | ||
096978f0 RL |
30 | static CRYPTO_ONCE init_info = CRYPTO_ONCE_STATIC_INIT; |
31 | ||
32 | DEFINE_RUN_ONCE_STATIC(init_info_strings) | |
33 | { | |
363e941e BE |
34 | #if defined(OPENSSL_CPUID_OBJ) |
35 | # if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \ | |
36 | defined(__x86_64) || defined(__x86_64__) || \ | |
37 | defined(_M_AMD64) || defined(_M_X64) | |
38 | const char *env; | |
39 | ||
40 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), | |
41 | CPUINFO_PREFIX "OPENSSL_ia32cap=0x%llx:0x%llx", | |
42 | (long long)OPENSSL_ia32cap_P[0] | | |
43 | (long long)OPENSSL_ia32cap_P[1] << 32, | |
44 | (long long)OPENSSL_ia32cap_P[2] | | |
45 | (long long)OPENSSL_ia32cap_P[3] << 32); | |
46 | if ((env = getenv("OPENSSL_ia32cap")) != NULL) | |
47 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), | |
48 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), | |
49 | " env:%s", env); | |
50 | # elif defined(__arm__) || defined(__arm) || defined(__aarch64__) | |
51 | const char *env; | |
52 | ||
53 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str), | |
54 | CPUINFO_PREFIX "OPENSSL_armcap=0x%x", OPENSSL_armcap_P); | |
55 | if ((env = getenv("OPENSSL_armcap")) != NULL) | |
56 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str), | |
57 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str), | |
58 | " env:%s", env); | |
59 | # endif | |
60 | #endif | |
61 | ||
096978f0 RL |
62 | { |
63 | static char seeds[512] = ""; | |
64 | ||
65 | #define add_seeds_string(str) \ | |
66 | do { \ | |
67 | if (seeds[0] != '\0') \ | |
68 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \ | |
69 | OPENSSL_strlcat(seeds, str, sizeof(seeds)); \ | |
70 | } while (0) | |
71 | #define add_seeds_stringlist(label, strlist) \ | |
72 | do { \ | |
73 | add_seeds_string(label "("); \ | |
74 | { \ | |
9484b67d DMSP |
75 | const char *dev[] = { strlist, NULL }; \ |
76 | const char **p; \ | |
096978f0 RL |
77 | int first = 1; \ |
78 | \ | |
9484b67d | 79 | for (p = dev; *p != NULL; p++) { \ |
096978f0 RL |
80 | if (!first) \ |
81 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \ | |
82 | first = 0; \ | |
9484b67d | 83 | OPENSSL_strlcat(seeds, *p, sizeof(seeds)); \ |
096978f0 RL |
84 | } \ |
85 | } \ | |
86 | OPENSSL_strlcat(seeds, ")", sizeof(seeds)); \ | |
87 | } while (0) | |
88 | ||
89 | #ifdef OPENSSL_RAND_SEED_NONE | |
90 | add_seeds_string("none"); | |
91 | #endif | |
92 | #ifdef OPENSSL_RAND_SEED_RTDSC | |
93 | add_seeds_string("stdsc"); | |
94 | #endif | |
95 | #ifdef OPENSSL_RAND_SEED_RDCPU | |
96 | add_seeds_string("rdrand ( rdseed rdrand )"); | |
97 | #endif | |
98 | #ifdef OPENSSL_RAND_SEED_LIBRANDOM | |
99 | add_seeds_string("C-library-random"); | |
100 | #endif | |
101 | #ifdef OPENSSL_RAND_SEED_GETRANDOM | |
102 | add_seeds_string("getrandom-syscall"); | |
103 | #endif | |
104 | #ifdef OPENSSL_RAND_SEED_DEVRANDOM | |
9484b67d | 105 | add_seeds_stringlist("random-device", DEVRANDOM); |
096978f0 RL |
106 | #endif |
107 | #ifdef OPENSSL_RAND_SEED_EGD | |
9484b67d | 108 | add_seeds_stringlist("EGD", DEVRANDOM_EGD); |
096978f0 RL |
109 | #endif |
110 | #ifdef OPENSSL_RAND_SEED_OS | |
111 | add_seeds_string("os-specific"); | |
112 | #endif | |
113 | seed_sources = seeds; | |
114 | } | |
115 | return 1; | |
116 | } | |
0109e030 RL |
117 | |
118 | const char *OPENSSL_info(int t) | |
119 | { | |
096978f0 RL |
120 | /* |
121 | * We don't care about the result. Worst case scenario, the strings | |
122 | * won't be initialised, i.e. remain NULL, which means that the info | |
123 | * isn't available anyway... | |
124 | */ | |
125 | (void)RUN_ONCE(&init_info, init_info_strings); | |
126 | ||
0109e030 RL |
127 | switch (t) { |
128 | case OPENSSL_INFO_CONFIG_DIR: | |
129 | return OPENSSLDIR; | |
130 | case OPENSSL_INFO_ENGINES_DIR: | |
131 | return ENGINESDIR; | |
132 | case OPENSSL_INFO_MODULES_DIR: | |
133 | return MODULESDIR; | |
134 | case OPENSSL_INFO_DSO_EXTENSION: | |
135 | return DSO_EXTENSION; | |
136 | case OPENSSL_INFO_DIR_FILENAME_SEPARATOR: | |
137 | #if defined(_WIN32) | |
138 | return "\\"; | |
139 | #elif defined(__VMS) | |
140 | return ""; | |
141 | #else /* Assume POSIX */ | |
142 | return "/"; | |
143 | #endif | |
144 | case OPENSSL_INFO_LIST_SEPARATOR: | |
145 | { | |
146 | static const char list_sep[] = { LIST_SEPARATOR_CHAR, '\0' }; | |
147 | return list_sep; | |
148 | } | |
096978f0 RL |
149 | case OPENSSL_INFO_SEED_SOURCE: |
150 | return seed_sources; | |
363e941e BE |
151 | case OPENSSL_INFO_CPU_SETTINGS: |
152 | /* | |
153 | * If successfully initialized, ossl_cpu_info_str will start | |
154 | * with CPUINFO_PREFIX, if failed it will be an empty string. | |
155 | * Strip away the CPUINFO_PREFIX which we don't need here. | |
156 | */ | |
157 | if (ossl_cpu_info_str[0] != '\0') | |
158 | return ossl_cpu_info_str + strlen(CPUINFO_PREFIX); | |
159 | break; | |
0109e030 RL |
160 | default: |
161 | break; | |
162 | } | |
163 | /* Not an error */ | |
164 | return NULL; | |
165 | } |