| 1 | /*
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| 2 | * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (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 | #ifndef OSSL_E_OS_H
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| 11 | # define OSSL_E_OS_H
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| 12 |
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| 13 | # include <limits.h>
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| 14 | # include <openssl/opensslconf.h>
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| 15 |
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| 16 | # include <openssl/e_os2.h>
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| 17 | # include <openssl/crypto.h>
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| 18 | # include "internal/nelem.h"
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| 19 |
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| 20 | /*
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| 21 | * <openssl/e_os2.h> contains what we can justify to make visible to the
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| 22 | * outside; this file e_os.h is not part of the exported interface.
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| 23 | */
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| 24 |
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| 25 | # ifndef DEVRANDOM
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| 26 | /*
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| 27 | * set this to a comma-separated list of 'random' device files to try out. By
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| 28 | * default, we will try to read at least one of these files
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| 29 | */
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| 30 | # define DEVRANDOM "/dev/urandom", "/dev/random", "/dev/hwrng", "/dev/srandom"
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| 31 | # if defined(__linux) && !defined(__ANDROID__)
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| 32 | # ifndef DEVRANDOM_WAIT
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| 33 | # define DEVRANDOM_WAIT "/dev/random"
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| 34 | # endif
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| 35 | /*
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| 36 | * Linux kernels 4.8 and later changes how their random device works and there
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| 37 | * is no reliable way to tell that /dev/urandom has been seeded -- getentropy(2)
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| 38 | * should be used instead.
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| 39 | */
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| 40 | # ifndef DEVRANDOM_SAFE_KERNEL
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| 41 | # define DEVRANDOM_SAFE_KERNEL 4, 8
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| 42 | # endif
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| 43 | /*
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| 44 | * Some operating systems do not permit select(2) on their random devices,
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| 45 | * defining this to zero will force the use of read(2) to extract one byte
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| 46 | * from /dev/random.
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| 47 | */
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| 48 | # ifndef DEVRANDM_WAIT_USE_SELECT
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| 49 | # define DEVRANDM_WAIT_USE_SELECT 1
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| 50 | # endif
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| 51 | /*
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| 52 | * Define the shared memory identifier used to indicate if the operating
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| 53 | * system has properly seeded the DEVRANDOM source.
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| 54 | */
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| 55 | # ifndef OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID
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| 56 | # define OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID 114
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| 57 | # endif
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| 58 |
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| 59 | # endif
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| 60 | # endif
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| 61 | # if !defined(OPENSSL_NO_EGD) && !defined(DEVRANDOM_EGD)
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| 62 | /*
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| 63 | * set this to a comma-separated list of 'egd' sockets to try out. These
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| 64 | * sockets will be tried in the order listed in case accessing the device
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| 65 | * files listed in DEVRANDOM did not return enough randomness.
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| 66 | */
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| 67 | # define DEVRANDOM_EGD "/var/run/egd-pool", "/dev/egd-pool", "/etc/egd-pool", "/etc/entropy"
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| 68 | # endif
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| 69 |
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| 70 | # if defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)
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| 71 | # define NO_CHMOD
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| 72 | # define NO_SYSLOG
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| 73 | # endif
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| 74 |
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| 75 | # define get_last_sys_error() errno
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| 76 | # define clear_sys_error() errno=0
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| 77 | # define set_sys_error(e) errno=(e)
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| 78 |
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| 79 | /********************************************************************
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| 80 | The Microsoft section
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| 81 | ********************************************************************/
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| 82 | # if defined(OPENSSL_SYS_WIN32) && !defined(WIN32)
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| 83 | # define WIN32
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| 84 | # endif
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| 85 | # if defined(OPENSSL_SYS_WINDOWS) && !defined(WINDOWS)
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| 86 | # define WINDOWS
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| 87 | # endif
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| 88 | # if defined(OPENSSL_SYS_MSDOS) && !defined(MSDOS)
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| 89 | # define MSDOS
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| 90 | # endif
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| 91 |
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| 92 | # ifdef WIN32
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| 93 | # undef get_last_sys_error
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| 94 | # undef clear_sys_error
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| 95 | # undef set_sys_error
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| 96 | # define get_last_sys_error() GetLastError()
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| 97 | # define clear_sys_error() SetLastError(0)
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| 98 | # define set_sys_error(e) SetLastError(e)
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| 99 | # if !defined(WINNT)
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| 100 | # define WIN_CONSOLE_BUG
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| 101 | # endif
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| 102 | # else
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| 103 | # endif
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| 104 |
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| 105 | # if (defined(WINDOWS) || defined(MSDOS))
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| 106 |
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| 107 | # ifdef __DJGPP__
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| 108 | # include <unistd.h>
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| 109 | # include <sys/stat.h>
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| 110 | # define _setmode setmode
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| 111 | # define _O_TEXT O_TEXT
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| 112 | # define _O_BINARY O_BINARY
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| 113 | # define HAS_LFN_SUPPORT(name) (pathconf((name), _PC_NAME_MAX) > 12)
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| 114 | # undef DEVRANDOM_EGD /* Neither MS-DOS nor FreeDOS provide 'egd' sockets. */
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| 115 | # undef DEVRANDOM
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| 116 | # define DEVRANDOM "/dev/urandom\x24"
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| 117 | # endif /* __DJGPP__ */
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| 118 |
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| 119 | # ifndef S_IFDIR
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| 120 | # define S_IFDIR _S_IFDIR
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| 121 | # endif
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| 122 |
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| 123 | # ifndef S_IFMT
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| 124 | # define S_IFMT _S_IFMT
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| 125 | # endif
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| 126 |
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| 127 | # if !defined(WINNT) && !defined(__DJGPP__)
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| 128 | # define NO_SYSLOG
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| 129 | # endif
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| 130 |
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| 131 | # ifdef WINDOWS
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| 132 | # if !defined(_WIN32_WCE) && !defined(_WIN32_WINNT)
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| 133 | /*
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| 134 | * Defining _WIN32_WINNT here in e_os.h implies certain "discipline."
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| 135 | * Most notably we ought to check for availability of each specific
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| 136 | * routine that was introduced after denoted _WIN32_WINNT with
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| 137 | * GetProcAddress(). Normally newer functions are masked with higher
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| 138 | * _WIN32_WINNT in SDK headers. So that if you wish to use them in
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| 139 | * some module, you'd need to override _WIN32_WINNT definition in
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| 140 | * the target module in order to "reach for" prototypes, but replace
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| 141 | * calls to new functions with indirect calls. Alternatively it
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| 142 | * might be possible to achieve the goal by /DELAYLOAD-ing .DLLs
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| 143 | * and check for current OS version instead.
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| 144 | */
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| 145 | # define _WIN32_WINNT 0x0501
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| 146 | # endif
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| 147 | # ifndef IN_RING0 /* bird */
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| 148 | # if defined(_WIN32_WINNT) || defined(_WIN32_WCE)
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| 149 | /*
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| 150 | * Just like defining _WIN32_WINNT including winsock2.h implies
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| 151 | * certain "discipline" for maintaining [broad] binary compatibility.
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| 152 | * As long as structures are invariant among Winsock versions,
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| 153 | * it's sufficient to check for specific Winsock2 API availability
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| 154 | * at run-time [DSO_global_lookup is recommended]...
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| 155 | */
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| 156 | # include <winsock2.h>
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| 157 | # include <ws2tcpip.h>
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| 158 | /* yes, they have to be #included prior to <windows.h> */
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| 159 | # endif
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| 160 | # include <windows.h>
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| 161 | # endif /* bird */
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| 162 | # include <stdio.h>
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| 163 | # include <stddef.h>
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| 164 | # include <errno.h>
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| 165 | # if defined(_WIN32_WCE) && !defined(EACCES)
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| 166 | # define EACCES 13
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| 167 | # endif
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| 168 | # include <string.h>
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| 169 | # ifdef _WIN64
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| 170 | # define strlen(s) _strlen31(s)
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| 171 | /* cut strings to 2GB */
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| 172 | # ifndef VBOX
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| 173 | static __inline unsigned int _strlen31(const char *str)
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| 174 | # else
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| 175 | static __inline size_t _strlen31(const char *str)
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| 176 | # endif
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| 177 | {
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| 178 | unsigned int len = 0;
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| 179 | while (*str && len < 0x80000000U)
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| 180 | str++, len++;
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| 181 | return len & 0x7FFFFFFF;
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| 182 | }
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| 183 | # endif
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| 184 | # include <malloc.h>
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| 185 | # if defined(_MSC_VER) && !defined(_WIN32_WCE) && !defined(_DLL) && defined(stdin)
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| 186 | # if _MSC_VER>=1300 && _MSC_VER<1600
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| 187 | # undef stdin
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| 188 | # undef stdout
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| 189 | # undef stderr
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| 190 | FILE * __cdecl __iob_func(); /* vbox/bird: added __cdecl */
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| 191 | # define stdin (&__iob_func()[0])
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| 192 | # define stdout (&__iob_func()[1])
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| 193 | # define stderr (&__iob_func()[2])
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| 194 | # elif _MSC_VER<1300 && defined(I_CAN_LIVE_WITH_LNK4049)
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| 195 | # undef stdin
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| 196 | # undef stdout
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| 197 | # undef stderr
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| 198 | /*
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| 199 | * pre-1300 has __p__iob(), but it's available only in msvcrt.lib,
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| 200 | * or in other words with /MD. Declaring implicit import, i.e. with
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| 201 | * _imp_ prefix, works correctly with all compiler options, but
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| 202 | * without /MD results in LINK warning LNK4049: 'locally defined
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| 203 | * symbol "__iob" imported'.
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| 204 | */
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| 205 | extern FILE *_imp___iob;
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| 206 | # define stdin (&_imp___iob[0])
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| 207 | # define stdout (&_imp___iob[1])
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| 208 | # define stderr (&_imp___iob[2])
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| 209 | # endif
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| 210 | # endif
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| 211 | # endif
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| 212 | # include <io.h>
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| 213 | # include <fcntl.h>
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| 214 |
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| 215 | # ifdef OPENSSL_SYS_WINCE
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| 216 | # define OPENSSL_NO_POSIX_IO
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| 217 | # endif
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| 218 |
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| 219 | # define EXIT(n) exit(n)
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| 220 | # define LIST_SEPARATOR_CHAR ';'
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| 221 | # ifndef W_OK
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| 222 | # define W_OK 2
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| 223 | # endif
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| 224 | # ifndef R_OK
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| 225 | # define R_OK 4
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| 226 | # endif
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| 227 | # ifdef OPENSSL_SYS_WINCE
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| 228 | # define DEFAULT_HOME ""
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| 229 | # else
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| 230 | # define DEFAULT_HOME "C:"
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| 231 | # endif
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| 232 |
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| 233 | /* Avoid Visual Studio 13 GetVersion deprecated problems */
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| 234 | # if defined(_MSC_VER) && _MSC_VER>=1800
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| 235 | # define check_winnt() (1)
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| 236 | # define check_win_minplat(x) (1)
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| 237 | # else
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| 238 | # define check_winnt() (GetVersion() < 0x80000000)
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| 239 | # define check_win_minplat(x) (LOBYTE(LOWORD(GetVersion())) >= (x))
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| 240 | # endif
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| 241 |
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| 242 | # else /* The non-microsoft world */
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| 243 |
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| 244 | # if defined(OPENSSL_SYS_VXWORKS)
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| 245 | # include <sys/times.h>
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| 246 | # else
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| 247 | # include <sys/time.h>
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| 248 | # endif
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| 249 |
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| 250 | # ifdef OPENSSL_SYS_VMS
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| 251 | # define VMS 1
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| 252 | /*
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| 253 | * some programs don't include stdlib, so exit() and others give implicit
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| 254 | * function warnings
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| 255 | */
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| 256 | # include <stdlib.h>
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| 257 | # if defined(__DECC)
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| 258 | # include <unistd.h>
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| 259 | # else
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| 260 | # include <unixlib.h>
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| 261 | # endif
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| 262 | # define LIST_SEPARATOR_CHAR ','
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| 263 | /* We don't have any well-defined random devices on VMS, yet... */
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| 264 | # undef DEVRANDOM
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| 265 | /*-
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| 266 | We need to do this since VMS has the following coding on status codes:
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| 267 |
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| 268 | Bits 0-2: status type: 0 = warning, 1 = success, 2 = error, 3 = info ...
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| 269 | The important thing to know is that odd numbers are considered
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| 270 | good, while even ones are considered errors.
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| 271 | Bits 3-15: actual status number
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| 272 | Bits 16-27: facility number. 0 is considered "unknown"
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| 273 | Bits 28-31: control bits. If bit 28 is set, the shell won't try to
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| 274 | output the message (which, for random codes, just looks ugly)
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| 275 |
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| 276 | So, what we do here is to change 0 to 1 to get the default success status,
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| 277 | and everything else is shifted up to fit into the status number field, and
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| 278 | the status is tagged as an error, which is what is wanted here.
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| 279 |
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| 280 | Finally, we add the VMS C facility code 0x35a000, because there are some
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| 281 | programs, such as Perl, that will reinterpret the code back to something
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| 282 | POSIX. 'man perlvms' explains it further.
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| 283 |
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| 284 | NOTE: the perlvms manual wants to turn all codes 2 to 255 into success
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| 285 | codes (status type = 1). I couldn't disagree more. Fortunately, the
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| 286 | status type doesn't seem to bother Perl.
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| 287 | -- Richard Levitte
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| 288 | */
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| 289 | # define EXIT(n) exit((n) ? (((n) << 3) | 2 | 0x10000000 | 0x35a000) : 1)
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| 290 |
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| 291 | # define DEFAULT_HOME "SYS$LOGIN:"
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| 292 |
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| 293 | # else
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| 294 | /* !defined VMS */
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| 295 | # ifdef OPENSSL_UNISTD
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| 296 | # include OPENSSL_UNISTD
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| 297 | # else
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| 298 | # include <unistd.h>
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| 299 | # endif
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| 300 | # include <sys/types.h>
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| 301 | # ifdef OPENSSL_SYS_WIN32_CYGWIN
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| 302 | # include <io.h>
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| 303 | # include <fcntl.h>
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| 304 | # endif
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| 305 |
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| 306 | # define LIST_SEPARATOR_CHAR ':'
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| 307 | # define EXIT(n) exit(n)
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| 308 | # endif
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| 309 |
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| 310 | # endif
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| 311 |
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| 312 | /***********************************************/
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| 313 |
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| 314 | # if defined(OPENSSL_SYS_WINDOWS)
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| 315 | # define strcasecmp _stricmp
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| 316 | # define strncasecmp _strnicmp
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| 317 | # if (_MSC_VER >= 1310)
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| 318 | # define open _open
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| 319 | # define fdopen _fdopen
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| 320 | # define close _close
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| 321 | # ifndef strdup
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| 322 | # define strdup _strdup
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| 323 | # endif
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| 324 | # define unlink _unlink
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| 325 | # define fileno _fileno
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| 326 | # endif
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| 327 | # else
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| 328 | # include <strings.h>
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| 329 | # endif
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| 330 |
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| 331 | /* vxworks */
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| 332 | # if defined(OPENSSL_SYS_VXWORKS)
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| 333 | # include <ioLib.h>
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| 334 | # include <tickLib.h>
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| 335 | # include <sysLib.h>
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| 336 | # include <vxWorks.h>
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| 337 | # include <sockLib.h>
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| 338 | # include <taskLib.h>
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| 339 |
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| 340 | # define TTY_STRUCT int
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| 341 | # define sleep(a) taskDelay((a) * sysClkRateGet())
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| 342 |
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| 343 | /*
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| 344 | * NOTE: these are implemented by helpers in database app! if the database is
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| 345 | * not linked, we need to implement them elsewhere
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| 346 | */
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| 347 | struct hostent *gethostbyname(const char *name);
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| 348 | struct hostent *gethostbyaddr(const char *addr, int length, int type);
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| 349 | struct servent *getservbyname(const char *name, const char *proto);
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| 350 |
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| 351 | # endif
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| 352 | /* end vxworks */
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| 353 |
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| 354 | # ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
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| 355 | # define CRYPTO_memcmp memcmp
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| 356 | # endif
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| 357 |
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| 358 | /* unistd.h defines _POSIX_VERSION */
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| 359 | # if !defined(OPENSSL_NO_SECURE_MEMORY) && defined(OPENSSL_SYS_UNIX) \
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| 360 | && ( (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) \
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| 361 | || defined(__sun) || defined(__hpux) || defined(__sgi) \
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| 362 | || defined(__osf__) )
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| 363 | # define OPENSSL_SECURE_MEMORY /* secure memory is implemented */
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| 364 | # endif
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| 365 | #endif
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