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
32static void *app_stdin(void)
33{
34    return stdin;
35}
36
37static void *app_stdout(void)
38{
39    return stdout;
40}
41
42static void *app_stderr(void)
43{
44    return stderr;
45}
46
47static int app_feof(FILE *fp)
48{
49    return feof(fp);
50}
51
52static int app_ferror(FILE *fp)
53{
54    return ferror(fp);
55}
56
57static void app_clearerr(FILE *fp)
58{
59    clearerr(fp);
60}
61
62static int app_fileno(FILE *fp)
63{
64    return _fileno(fp);
65}
66
67static int app_fsetmod(FILE *fp, char mod)
68{
69    return _setmode(_fileno(fp), mod == 'b' ? _O_BINARY : _O_TEXT);
70}
71
72#ifdef __cplusplus
73extern "C" {
74#endif
75
76__declspec(dllexport)
77void **
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
88OPENSSL_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
130