| 1 | /*
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| 2 | * Copyright 2019-2024 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <openssl/crypto.h>
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| 11 | #include "crypto/rand.h"
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| 12 | #include "crypto/dso_conf.h"
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| 13 | #include "internal/thread_once.h"
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| 14 | #include "internal/cryptlib.h"
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| 15 | #include "internal/e_os.h"
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| 16 | #include "buildinf.h"
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| 17 |
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| 18 | #ifndef OPENSSL_NO_JITTER
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| 19 | # include <stdio.h>
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| 20 | # include <jitterentropy.h>
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| 21 | #endif
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| 22 |
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| 23 | #if defined(__arm__) || defined(__arm) || defined(__aarch64__)
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| 24 | # include "arm_arch.h"
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| 25 | # define CPU_INFO_STR_LEN 128
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| 26 | #elif defined(__s390__) || defined(__s390x__)
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| 27 | # include "s390x_arch.h"
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| 28 | # define CPU_INFO_STR_LEN 2048
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| 29 | #elif defined(__riscv)
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| 30 | # include "crypto/riscv_arch.h"
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| 31 | # define CPU_INFO_STR_LEN 2048
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| 32 | #else
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| 33 | # define CPU_INFO_STR_LEN 128
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| 34 | #endif
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| 35 |
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| 36 | /* extern declaration to avoid warning */
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| 37 | extern char ossl_cpu_info_str[];
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| 38 |
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| 39 | static char *seed_sources = NULL;
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| 40 |
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| 41 | char ossl_cpu_info_str[CPU_INFO_STR_LEN] = "";
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| 42 | #define CPUINFO_PREFIX "CPUINFO: "
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| 43 |
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| 44 | #ifndef VBOX
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| 45 | static CRYPTO_ONCE init_info = CRYPTO_ONCE_STATIC_INIT;
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| 46 |
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| 47 | DEFINE_RUN_ONCE_STATIC(init_info_strings)
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| 48 | {
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| 49 | #if defined(OPENSSL_CPUID_OBJ)
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| 50 | # if defined(__i386) || defined(__i386__) || defined(_M_IX86) || \
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| 51 | defined(__x86_64) || defined(__x86_64__) || \
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| 52 | defined(_M_AMD64) || defined(_M_X64)
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| 53 | const char *env;
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| 54 |
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| 55 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str),
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| 56 | CPUINFO_PREFIX "OPENSSL_ia32cap=0x%llx:0x%llx",
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| 57 | (unsigned long long)OPENSSL_ia32cap_P[0] |
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| 58 | (unsigned long long)OPENSSL_ia32cap_P[1] << 32,
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| 59 | (unsigned long long)OPENSSL_ia32cap_P[2] |
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| 60 | (unsigned long long)OPENSSL_ia32cap_P[3] << 32);
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| 61 | if ((env = getenv("OPENSSL_ia32cap")) != NULL)
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| 62 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str),
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| 63 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str),
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| 64 | " env:%s", env);
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| 65 | # elif defined(__arm__) || defined(__arm) || defined(__aarch64__)
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| 66 | const char *env;
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| 67 |
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| 68 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str),
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| 69 | CPUINFO_PREFIX "OPENSSL_armcap=0x%x", OPENSSL_armcap_P);
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| 70 | if ((env = getenv("OPENSSL_armcap")) != NULL)
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| 71 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str),
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| 72 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str),
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| 73 | " env:%s", env);
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| 74 | # elif defined(__s390__) || defined(__s390x__)
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| 75 | const char *env;
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| 76 |
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| 77 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str),
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| 78 | CPUINFO_PREFIX "OPENSSL_s390xcap="
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| 79 | "stfle:0x%llx:0x%llx:0x%llx:0x%llx:"
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| 80 | "kimd:0x%llx:0x%llx:"
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| 81 | "klmd:0x%llx:0x%llx:"
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| 82 | "km:0x%llx:0x%llx:"
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| 83 | "kmc:0x%llx:0x%llx:"
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| 84 | "kmac:0x%llx:0x%llx:"
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| 85 | "kmctr:0x%llx:0x%llx:"
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| 86 | "kmo:0x%llx:0x%llx:"
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| 87 | "kmf:0x%llx:0x%llx:"
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| 88 | "prno:0x%llx:0x%llx:"
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| 89 | "kma:0x%llx:0x%llx:"
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| 90 | "pcc:0x%llx:0x%llx:"
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| 91 | "kdsa:0x%llx:0x%llx",
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| 92 | OPENSSL_s390xcap_P.stfle[0], OPENSSL_s390xcap_P.stfle[1],
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| 93 | OPENSSL_s390xcap_P.stfle[2], OPENSSL_s390xcap_P.stfle[3],
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| 94 | OPENSSL_s390xcap_P.kimd[0], OPENSSL_s390xcap_P.kimd[1],
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| 95 | OPENSSL_s390xcap_P.klmd[0], OPENSSL_s390xcap_P.klmd[1],
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| 96 | OPENSSL_s390xcap_P.km[0], OPENSSL_s390xcap_P.km[1],
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| 97 | OPENSSL_s390xcap_P.kmc[0], OPENSSL_s390xcap_P.kmc[1],
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| 98 | OPENSSL_s390xcap_P.kmac[0], OPENSSL_s390xcap_P.kmac[1],
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| 99 | OPENSSL_s390xcap_P.kmctr[0], OPENSSL_s390xcap_P.kmctr[1],
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| 100 | OPENSSL_s390xcap_P.kmo[0], OPENSSL_s390xcap_P.kmo[1],
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| 101 | OPENSSL_s390xcap_P.kmf[0], OPENSSL_s390xcap_P.kmf[1],
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| 102 | OPENSSL_s390xcap_P.prno[0], OPENSSL_s390xcap_P.prno[1],
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| 103 | OPENSSL_s390xcap_P.kma[0], OPENSSL_s390xcap_P.kma[1],
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| 104 | OPENSSL_s390xcap_P.pcc[0], OPENSSL_s390xcap_P.pcc[1],
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| 105 | OPENSSL_s390xcap_P.kdsa[0], OPENSSL_s390xcap_P.kdsa[1]);
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| 106 | if ((env = getenv("OPENSSL_s390xcap")) != NULL)
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| 107 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str),
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| 108 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str),
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| 109 | " env:%s", env);
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| 110 | # elif defined(__riscv)
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| 111 | const char *env;
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| 112 | char sep = '=';
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| 113 |
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| 114 | BIO_snprintf(ossl_cpu_info_str, sizeof(ossl_cpu_info_str),
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| 115 | CPUINFO_PREFIX "OPENSSL_riscvcap");
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| 116 | for (size_t i = 0; i < kRISCVNumCaps; ++i) {
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| 117 | if (OPENSSL_riscvcap_P[RISCV_capabilities[i].index]
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| 118 | & (1 << RISCV_capabilities[i].bit_offset)) {
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| 119 | /* Match, display the name */
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| 120 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str),
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| 121 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str),
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| 122 | "%c%s", sep, RISCV_capabilities[i].name);
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| 123 | /* Only the first sep is '=' */
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| 124 | sep = '_';
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| 125 | }
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| 126 | }
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| 127 | /* If no capability is found, add back the = */
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| 128 | if (sep == '=') {
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| 129 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str),
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| 130 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str),
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| 131 | "%c", sep);
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| 132 | }
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| 133 | if ((env = getenv("OPENSSL_riscvcap")) != NULL)
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| 134 | BIO_snprintf(ossl_cpu_info_str + strlen(ossl_cpu_info_str),
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| 135 | sizeof(ossl_cpu_info_str) - strlen(ossl_cpu_info_str),
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| 136 | " env:%s", env);
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| 137 | # endif
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| 138 | #endif
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| 139 |
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| 140 | {
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| 141 | static char seeds[512] = "";
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| 142 |
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| 143 | #define add_seeds_string(str) \
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| 144 | do { \
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| 145 | if (seeds[0] != '\0') \
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| 146 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \
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| 147 | OPENSSL_strlcat(seeds, str, sizeof(seeds)); \
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| 148 | } while (0)
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| 149 | #define add_seeds_stringlist(label, strlist) \
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| 150 | do { \
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| 151 | add_seeds_string(label "("); \
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| 152 | { \
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| 153 | const char *dev[] = { strlist, NULL }; \
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| 154 | const char **p; \
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| 155 | int first = 1; \
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| 156 | \
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| 157 | for (p = dev; *p != NULL; p++) { \
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| 158 | if (!first) \
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| 159 | OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \
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| 160 | first = 0; \
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| 161 | OPENSSL_strlcat(seeds, *p, sizeof(seeds)); \
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| 162 | } \
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| 163 | } \
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| 164 | OPENSSL_strlcat(seeds, ")", sizeof(seeds)); \
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| 165 | } while (0)
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| 166 |
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| 167 | #ifdef OPENSSL_RAND_SEED_NONE
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| 168 | add_seeds_string("none");
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| 169 | #endif
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| 170 | #ifdef OPENSSL_RAND_SEED_RDTSC
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| 171 | add_seeds_string("rdtsc");
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| 172 | #endif
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| 173 | #ifdef OPENSSL_RAND_SEED_RDCPU
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| 174 | # ifdef __aarch64__
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| 175 | add_seeds_string("rndr ( rndrrs rndr )");
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| 176 | # else
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| 177 | add_seeds_string("rdrand ( rdseed rdrand )");
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| 178 | # endif
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| 179 | #endif
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| 180 | #ifdef OPENSSL_RAND_SEED_GETRANDOM
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| 181 | add_seeds_string("getrandom-syscall");
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| 182 | #endif
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| 183 | #ifdef OPENSSL_RAND_SEED_DEVRANDOM
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| 184 | add_seeds_stringlist("random-device", DEVRANDOM);
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| 185 | #endif
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| 186 | #ifdef OPENSSL_RAND_SEED_EGD
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| 187 | add_seeds_stringlist("EGD", DEVRANDOM_EGD);
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| 188 | #endif
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| 189 | #ifdef OPENSSL_RAND_SEED_OS
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| 190 | add_seeds_string("os-specific");
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| 191 | #endif
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| 192 | #ifndef OPENSSL_NO_JITTER
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| 193 | {
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| 194 | char buf[32];
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| 195 |
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| 196 | BIO_snprintf(buf, sizeof(buf), "JITTER (%d)", jent_version());
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| 197 | add_seeds_string(buf);
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| 198 | }
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| 199 | #endif
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| 200 | seed_sources = seeds;
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| 201 | }
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| 202 | return 1;
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| 203 | }
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| 204 | #endif /* VBOX */
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| 205 |
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| 206 | const char *OPENSSL_info(int t)
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| 207 | {
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| 208 | #ifndef VBOX
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| 209 | /*
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| 210 | * We don't care about the result. Worst case scenario, the strings
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| 211 | * won't be initialised, i.e. remain NULL, which means that the info
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| 212 | * isn't available anyway...
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| 213 | */
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| 214 | (void)RUN_ONCE(&init_info, init_info_strings);
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| 215 |
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| 216 | switch (t) {
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| 217 | case OPENSSL_INFO_CONFIG_DIR:
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| 218 | return ossl_get_openssldir();
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| 219 | case OPENSSL_INFO_ENGINES_DIR:
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| 220 | return ossl_get_enginesdir();
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| 221 | case OPENSSL_INFO_MODULES_DIR:
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| 222 | return ossl_get_modulesdir();
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| 223 | case OPENSSL_INFO_DSO_EXTENSION:
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| 224 | return DSO_EXTENSION;
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| 225 | case OPENSSL_INFO_DIR_FILENAME_SEPARATOR:
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| 226 | #if defined(_WIN32)
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| 227 | return "\\";
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| 228 | #elif defined(__VMS)
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| 229 | return "";
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| 230 | #else /* Assume POSIX */
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| 231 | return "/";
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| 232 | #endif
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| 233 | case OPENSSL_INFO_LIST_SEPARATOR:
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| 234 | {
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| 235 | static const char list_sep[] = { LIST_SEPARATOR_CHAR, '\0' };
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| 236 | return list_sep;
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| 237 | }
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| 238 | case OPENSSL_INFO_SEED_SOURCE:
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| 239 | return seed_sources;
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| 240 | case OPENSSL_INFO_CPU_SETTINGS:
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| 241 | /*
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| 242 | * If successfully initialized, ossl_cpu_info_str will start
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| 243 | * with CPUINFO_PREFIX, if failed it will be an empty string.
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| 244 | * Strip away the CPUINFO_PREFIX which we don't need here.
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| 245 | */
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| 246 | if (ossl_cpu_info_str[0] != '\0')
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| 247 | return ossl_cpu_info_str + strlen(CPUINFO_PREFIX);
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| 248 | break;
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| 249 | case OPENSSL_INFO_WINDOWS_CONTEXT:
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| 250 | return ossl_get_wininstallcontext();
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| 251 | default:
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| 252 | break;
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| 253 | }
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| 254 | #endif
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| 255 | /* Not an error */
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| 256 | return NULL;
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| 257 | }
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