applink.c revision 1.1.1.4
1/* 2 * Copyright 2004-2021 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#define APPLINK_STDIN 1 11#define APPLINK_STDOUT 2 12#define APPLINK_STDERR 3 13#define APPLINK_FPRINTF 4 14#define APPLINK_FGETS 5 15#define APPLINK_FREAD 6 16#define APPLINK_FWRITE 7 17#define APPLINK_FSETMOD 8 18#define APPLINK_FEOF 9 19#define APPLINK_FCLOSE 10 /* should not be used */ 20 21#define APPLINK_FOPEN 11 /* solely for completeness */ 22#define APPLINK_FSEEK 12 23#define APPLINK_FTELL 13 24#define APPLINK_FFLUSH 14 25#define APPLINK_FERROR 15 26#define APPLINK_CLEARERR 16 27#define APPLINK_FILENO 17 /* to be used with below */ 28 29#define APPLINK_OPEN 18 /* formally can't be used, as flags can vary */ 30#define APPLINK_READ 19 31#define APPLINK_WRITE 20 32#define APPLINK_LSEEK 21 33#define APPLINK_CLOSE 22 34#define APPLINK_MAX 22 /* always same as last macro */ 35 36#ifndef APPMACROS_ONLY 37# include <stdio.h> 38# include <io.h> 39# include <fcntl.h> 40 41# ifdef __BORLANDC__ 42 /* _lseek in <io.h> is a function-like macro so we can't take its address */ 43# undef _lseek 44# define _lseek lseek 45# endif 46 47static void *app_stdin(void) 48{ 49 return stdin; 50} 51 52static void *app_stdout(void) 53{ 54 return stdout; 55} 56 57static void *app_stderr(void) 58{ 59 return stderr; 60} 61 62static int app_feof(FILE *fp) 63{ 64 return feof(fp); 65} 66 67static int app_ferror(FILE *fp) 68{ 69 return ferror(fp); 70} 71 72static void app_clearerr(FILE *fp) 73{ 74 clearerr(fp); 75} 76 77static int app_fileno(FILE *fp) 78{ 79 return _fileno(fp); 80} 81 82static int app_fsetmod(FILE *fp, char mod) 83{ 84 return _setmode(_fileno(fp), mod == 'b' ? _O_BINARY : _O_TEXT); 85} 86 87#ifdef __cplusplus 88extern "C" { 89#endif 90 91__declspec(dllexport) 92void ** 93# if defined(__BORLANDC__) 94/* 95 * __stdcall appears to be the only way to get the name 96 * decoration right with Borland C. Otherwise it works 97 * purely incidentally, as we pass no parameters. 98 */ 99__stdcall 100# else 101__cdecl 102# endif 103OPENSSL_Applink(void) 104{ 105 static int once = 1; 106 static void *OPENSSL_ApplinkTable[APPLINK_MAX + 1] = 107 { (void *)APPLINK_MAX }; 108 109 if (once) { 110 OPENSSL_ApplinkTable[APPLINK_STDIN] = app_stdin; 111 OPENSSL_ApplinkTable[APPLINK_STDOUT] = app_stdout; 112 OPENSSL_ApplinkTable[APPLINK_STDERR] = app_stderr; 113 OPENSSL_ApplinkTable[APPLINK_FPRINTF] = fprintf; 114 OPENSSL_ApplinkTable[APPLINK_FGETS] = fgets; 115 OPENSSL_ApplinkTable[APPLINK_FREAD] = fread; 116 OPENSSL_ApplinkTable[APPLINK_FWRITE] = fwrite; 117 OPENSSL_ApplinkTable[APPLINK_FSETMOD] = app_fsetmod; 118 OPENSSL_ApplinkTable[APPLINK_FEOF] = app_feof; 119 OPENSSL_ApplinkTable[APPLINK_FCLOSE] = fclose; 120 121 OPENSSL_ApplinkTable[APPLINK_FOPEN] = fopen; 122 OPENSSL_ApplinkTable[APPLINK_FSEEK] = fseek; 123 OPENSSL_ApplinkTable[APPLINK_FTELL] = ftell; 124 OPENSSL_ApplinkTable[APPLINK_FFLUSH] = fflush; 125 OPENSSL_ApplinkTable[APPLINK_FERROR] = app_ferror; 126 OPENSSL_ApplinkTable[APPLINK_CLEARERR] = app_clearerr; 127 OPENSSL_ApplinkTable[APPLINK_FILENO] = app_fileno; 128 129 OPENSSL_ApplinkTable[APPLINK_OPEN] = _open; 130 OPENSSL_ApplinkTable[APPLINK_READ] = _read; 131 OPENSSL_ApplinkTable[APPLINK_WRITE] = _write; 132 OPENSSL_ApplinkTable[APPLINK_LSEEK] = _lseek; 133 OPENSSL_ApplinkTable[APPLINK_CLOSE] = _close; 134 135 once = 0; 136 } 137 138 return OPENSSL_ApplinkTable; 139} 140 141#ifdef __cplusplus 142} 143#endif 144#endif 145