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 47 static void *app_stdin(void) 48 { 49 return stdin; 50 } 51 52 static void *app_stdout(void) 53 { 54 return stdout; 55 } 56 57 static void *app_stderr(void) 58 { 59 return stderr; 60 } 61 62 static int app_feof(FILE *fp) 63 { 64 return feof(fp); 65 } 66 67 static int app_ferror(FILE *fp) 68 { 69 return ferror(fp); 70 } 71 72 static void app_clearerr(FILE *fp) 73 { 74 clearerr(fp); 75 } 76 77 static int app_fileno(FILE *fp) 78 { 79 return _fileno(fp); 80 } 81 82 static int app_fsetmod(FILE *fp, char mod) 83 { 84 return _setmode(_fileno(fp), mod == 'b' ? _O_BINARY : _O_TEXT); 85 } 86 87 #ifdef __cplusplus 88 extern "C" { 89 #endif 90 91 __declspec(dllexport) 92 void ** 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 103 OPENSSL_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