360 lines
11 KiB
C
360 lines
11 KiB
C
/*
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* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef OSSL_E_OS_H
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# define OSSL_E_OS_H
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# include <limits.h>
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# include <openssl/opensslconf.h>
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# include <openssl/e_os2.h>
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# include <openssl/crypto.h>
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# include "internal/nelem.h"
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/*
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* <openssl/e_os2.h> contains what we can justify to make visible to the
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* outside; this file e_os.h is not part of the exported interface.
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*/
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# ifndef DEVRANDOM
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/*
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* set this to a comma-separated list of 'random' device files to try out. By
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* default, we will try to read at least one of these files
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*/
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# define DEVRANDOM "/dev/urandom", "/dev/random", "/dev/hwrng", "/dev/srandom"
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# if defined(__linux) && !defined(__ANDROID__)
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# ifndef DEVRANDOM_WAIT
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# define DEVRANDOM_WAIT "/dev/random"
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# endif
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/*
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* Linux kernels 4.8 and later changes how their random device works and there
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* is no reliable way to tell that /dev/urandom has been seeded -- getentropy(2)
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* should be used instead.
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*/
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# ifndef DEVRANDOM_SAFE_KERNEL
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# define DEVRANDOM_SAFE_KERNEL 4, 8
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# endif
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/*
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* Some operating systems do not permit select(2) on their random devices,
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* defining this to zero will force the use of read(2) to extract one byte
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* from /dev/random.
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*/
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# ifndef DEVRANDM_WAIT_USE_SELECT
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# define DEVRANDM_WAIT_USE_SELECT 1
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# endif
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/*
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* Define the shared memory identifier used to indicate if the operating
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* system has properly seeded the DEVRANDOM source.
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*/
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# ifndef OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID
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# define OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID 114
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# endif
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# endif
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# endif
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# if !defined(OPENSSL_NO_EGD) && !defined(DEVRANDOM_EGD)
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/*
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* set this to a comma-separated list of 'egd' sockets to try out. These
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* sockets will be tried in the order listed in case accessing the device
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* files listed in DEVRANDOM did not return enough randomness.
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*/
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# define DEVRANDOM_EGD "/var/run/egd-pool", "/dev/egd-pool", "/etc/egd-pool", "/etc/entropy"
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# endif
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# if defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)
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# define NO_CHMOD
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# define NO_SYSLOG
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# endif
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# define get_last_sys_error() errno
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# define clear_sys_error() errno=0
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# define set_sys_error(e) errno=(e)
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/********************************************************************
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The Microsoft section
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********************************************************************/
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# if defined(OPENSSL_SYS_WIN32) && !defined(WIN32)
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# define WIN32
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# endif
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# if defined(OPENSSL_SYS_WINDOWS) && !defined(WINDOWS)
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# define WINDOWS
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# endif
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# if defined(OPENSSL_SYS_MSDOS) && !defined(MSDOS)
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# define MSDOS
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# endif
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# ifdef WIN32
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# undef get_last_sys_error
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# undef clear_sys_error
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# undef set_sys_error
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# define get_last_sys_error() GetLastError()
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# define clear_sys_error() SetLastError(0)
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# define set_sys_error(e) SetLastError(e)
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# if !defined(WINNT)
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# define WIN_CONSOLE_BUG
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# endif
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# else
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# endif
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# if (defined(WINDOWS) || defined(MSDOS))
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# ifdef __DJGPP__
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# include <unistd.h>
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# include <sys/stat.h>
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# define _setmode setmode
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# define _O_TEXT O_TEXT
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# define _O_BINARY O_BINARY
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# define HAS_LFN_SUPPORT(name) (pathconf((name), _PC_NAME_MAX) > 12)
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# undef DEVRANDOM_EGD /* Neither MS-DOS nor FreeDOS provide 'egd' sockets. */
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# undef DEVRANDOM
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# define DEVRANDOM "/dev/urandom\x24"
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# endif /* __DJGPP__ */
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# ifndef S_IFDIR
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# define S_IFDIR _S_IFDIR
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# endif
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# ifndef S_IFMT
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# define S_IFMT _S_IFMT
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# endif
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# if !defined(WINNT) && !defined(__DJGPP__)
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# define NO_SYSLOG
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# endif
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# ifdef WINDOWS
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# if !defined(_WIN32_WCE) && !defined(_WIN32_WINNT)
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/*
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* Defining _WIN32_WINNT here in e_os.h implies certain "discipline."
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* Most notably we ought to check for availability of each specific
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* routine that was introduced after denoted _WIN32_WINNT with
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* GetProcAddress(). Normally newer functions are masked with higher
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* _WIN32_WINNT in SDK headers. So that if you wish to use them in
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* some module, you'd need to override _WIN32_WINNT definition in
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* the target module in order to "reach for" prototypes, but replace
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* calls to new functions with indirect calls. Alternatively it
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* might be possible to achieve the goal by /DELAYLOAD-ing .DLLs
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* and check for current OS version instead.
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*/
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# define _WIN32_WINNT 0x0501
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# endif
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# if defined(_WIN32_WINNT) || defined(_WIN32_WCE)
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/*
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* Just like defining _WIN32_WINNT including winsock2.h implies
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* certain "discipline" for maintaining [broad] binary compatibility.
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* As long as structures are invariant among Winsock versions,
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* it's sufficient to check for specific Winsock2 API availability
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* at run-time [DSO_global_lookup is recommended]...
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*/
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# include <winsock2.h>
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# include <ws2tcpip.h>
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/* yes, they have to be #included prior to <windows.h> */
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# endif
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# include <windows.h>
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# include <stdio.h>
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# include <stddef.h>
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# include <errno.h>
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# if defined(_WIN32_WCE) && !defined(EACCES)
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# define EACCES 13
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# endif
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# include <string.h>
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# ifdef _WIN64
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# define strlen(s) _strlen31(s)
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/* cut strings to 2GB */
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static __inline unsigned int _strlen31(const char *str)
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{
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unsigned int len = 0;
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while (*str && len < 0x80000000U)
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str++, len++;
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return len & 0x7FFFFFFF;
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}
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# endif
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# include <malloc.h>
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# if defined(_MSC_VER) && !defined(_WIN32_WCE) && !defined(_DLL) && defined(stdin)
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# if _MSC_VER>=1300 && _MSC_VER<1600
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# undef stdin
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# undef stdout
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# undef stderr
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FILE *__iob_func();
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# define stdin (&__iob_func()[0])
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# define stdout (&__iob_func()[1])
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# define stderr (&__iob_func()[2])
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# elif _MSC_VER<1300 && defined(I_CAN_LIVE_WITH_LNK4049)
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# undef stdin
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# undef stdout
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# undef stderr
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/*
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* pre-1300 has __p__iob(), but it's available only in msvcrt.lib,
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* or in other words with /MD. Declaring implicit import, i.e. with
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* _imp_ prefix, works correctly with all compiler options, but
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* without /MD results in LINK warning LNK4049: 'locally defined
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* symbol "__iob" imported'.
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*/
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extern FILE *_imp___iob;
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# define stdin (&_imp___iob[0])
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# define stdout (&_imp___iob[1])
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# define stderr (&_imp___iob[2])
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# endif
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# endif
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# endif
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# include <io.h>
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# include <fcntl.h>
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# ifdef OPENSSL_SYS_WINCE
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# define OPENSSL_NO_POSIX_IO
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# endif
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# define EXIT(n) exit(n)
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# define LIST_SEPARATOR_CHAR ';'
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# ifndef W_OK
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# define W_OK 2
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# endif
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# ifndef R_OK
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# define R_OK 4
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# endif
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# ifdef OPENSSL_SYS_WINCE
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# define DEFAULT_HOME ""
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# else
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# define DEFAULT_HOME "C:"
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# endif
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/* Avoid Visual Studio 13 GetVersion deprecated problems */
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# if defined(_MSC_VER) && _MSC_VER>=1800
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# define check_winnt() (1)
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# define check_win_minplat(x) (1)
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# else
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# define check_winnt() (GetVersion() < 0x80000000)
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# define check_win_minplat(x) (LOBYTE(LOWORD(GetVersion())) >= (x))
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# endif
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# else /* The non-microsoft world */
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# if defined(OPENSSL_SYS_VXWORKS)
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# include <sys/times.h>
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# else
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# include <sys/time.h>
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# endif
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# ifdef OPENSSL_SYS_VMS
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# define VMS 1
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/*
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* some programs don't include stdlib, so exit() and others give implicit
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* function warnings
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*/
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# include <stdlib.h>
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# if defined(__DECC)
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# include <unistd.h>
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# else
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# include <unixlib.h>
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# endif
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# define LIST_SEPARATOR_CHAR ','
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/* We don't have any well-defined random devices on VMS, yet... */
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# undef DEVRANDOM
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/*-
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We need to do this since VMS has the following coding on status codes:
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Bits 0-2: status type: 0 = warning, 1 = success, 2 = error, 3 = info ...
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The important thing to know is that odd numbers are considered
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good, while even ones are considered errors.
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Bits 3-15: actual status number
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Bits 16-27: facility number. 0 is considered "unknown"
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Bits 28-31: control bits. If bit 28 is set, the shell won't try to
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output the message (which, for random codes, just looks ugly)
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So, what we do here is to change 0 to 1 to get the default success status,
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and everything else is shifted up to fit into the status number field, and
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the status is tagged as an error, which is what is wanted here.
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Finally, we add the VMS C facility code 0x35a000, because there are some
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programs, such as Perl, that will reinterpret the code back to something
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POSIX. 'man perlvms' explains it further.
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NOTE: the perlvms manual wants to turn all codes 2 to 255 into success
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codes (status type = 1). I couldn't disagree more. Fortunately, the
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status type doesn't seem to bother Perl.
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-- Richard Levitte
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*/
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# define EXIT(n) exit((n) ? (((n) << 3) | 2 | 0x10000000 | 0x35a000) : 1)
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# define DEFAULT_HOME "SYS$LOGIN:"
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# else
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/* !defined VMS */
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# ifdef OPENSSL_UNISTD
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# include OPENSSL_UNISTD
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# else
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# include <unistd.h>
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# endif
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# include <sys/types.h>
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# ifdef OPENSSL_SYS_WIN32_CYGWIN
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# include <io.h>
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# include <fcntl.h>
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# endif
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# define LIST_SEPARATOR_CHAR ':'
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# define EXIT(n) exit(n)
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# endif
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# endif
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/***********************************************/
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# if defined(OPENSSL_SYS_WINDOWS)
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# define strcasecmp _stricmp
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# define strncasecmp _strnicmp
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# if (_MSC_VER >= 1310) && !defined(_WIN32_WCE)
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# define open _open
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# define fdopen _fdopen
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# define close _close
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# ifndef strdup
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# define strdup _strdup
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# endif
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# define unlink _unlink
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# define fileno _fileno
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# endif
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# else
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# include <strings.h>
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# endif
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/* vxworks */
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# if defined(OPENSSL_SYS_VXWORKS)
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# include <ioLib.h>
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# include <tickLib.h>
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# include <sysLib.h>
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# include <vxWorks.h>
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# include <sockLib.h>
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# include <taskLib.h>
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# define TTY_STRUCT int
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# define sleep(a) taskDelay((a) * sysClkRateGet())
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/*
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* NOTE: these are implemented by helpers in database app! if the database is
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* not linked, we need to implement them elsewhere
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*/
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struct hostent *gethostbyname(const char *name);
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struct hostent *gethostbyaddr(const char *addr, int length, int type);
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struct servent *getservbyname(const char *name, const char *proto);
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# endif
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/* end vxworks */
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# ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
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# define CRYPTO_memcmp memcmp
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# endif
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/* unistd.h defines _POSIX_VERSION */
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# if !defined(OPENSSL_NO_SECURE_MEMORY) && defined(OPENSSL_SYS_UNIX) \
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&& ( (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) \
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|| defined(__sun) || defined(__hpux) || defined(__sgi) \
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|| defined(__osf__) )
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# define OPENSSL_SECURE_MEMORY /* secure memory is implemented */
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# endif
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#endif
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