ms/applink.c

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