1 /*
2  * Copyright (c) 2000, 2001, Corinna Vinschen <vinschen@cygnus.com>
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23  *
24  * Created: Sat Sep 02 12:17:00 2000 cv
25  *
26  * This file contains functions for forcing opened file descriptors to
27  * binary mode on Windows systems.
28  */
29 
30 #include "includes.h"
31 
32 #ifdef HAVE_CYGWIN
33 
34 #if defined(open) && open == binary_open
35 # undef open
36 #endif
37 #if defined(pipe) && open == binary_pipe
38 # undef pipe
39 #endif
40 
41 #include <sys/types.h>
42 
43 #include <fcntl.h>
44 #include <stdlib.h>
45 #include <unistd.h>
46 #include <windows.h>
47 
48 #include "xmalloc.h"
49 
50 int
51 binary_open(const char *filename, int flags, ...)
52 {
53 	va_list ap;
54 	mode_t mode;
55 
56 	va_start(ap, flags);
57 	mode = va_arg(ap, mode_t);
58 	va_end(ap);
59 	return (open(filename, flags | O_BINARY, mode));
60 }
61 
62 int
63 binary_pipe(int fd[2])
64 {
65 	int ret = pipe(fd);
66 
67 	if (!ret) {
68 		setmode(fd[0], O_BINARY);
69 		setmode(fd[1], O_BINARY);
70 	}
71 	return (ret);
72 }
73 
74 int
75 check_ntsec(const char *filename)
76 {
77 	return (pathconf(filename, _PC_POSIX_PERMISSIONS));
78 }
79 
80 #define NL(x) x, (sizeof (x) - 1)
81 #define WENV_SIZ (sizeof (wenv_arr) / sizeof (wenv_arr[0]))
82 
83 static struct wenv {
84 	const char *name;
85 	size_t namelen;
86 } wenv_arr[] = {
87 	{ NL("ALLUSERSPROFILE=") },
88 	{ NL("COMPUTERNAME=") },
89 	{ NL("COMSPEC=") },
90 	{ NL("CYGWIN=") },
91 	{ NL("OS=") },
92 	{ NL("PATH=") },
93 	{ NL("PATHEXT=") },
94 	{ NL("SYSTEMDRIVE=") },
95 	{ NL("SYSTEMROOT=") },
96 	{ NL("WINDIR=") }
97 };
98 
99 char **
100 fetch_windows_environment(void)
101 {
102 	char **e, **p;
103 	unsigned int i, idx = 0;
104 
105 	p = xcalloc(WENV_SIZ + 1, sizeof(char *));
106 	for (e = environ; *e != NULL; ++e) {
107 		for (i = 0; i < WENV_SIZ; ++i) {
108 			if (!strncmp(*e, wenv_arr[i].name, wenv_arr[i].namelen))
109 				p[idx++] = *e;
110 		}
111 	}
112 	p[idx] = NULL;
113 	return p;
114 }
115 
116 void
117 free_windows_environment(char **p)
118 {
119 	xfree(p);
120 }
121 
122 #endif /* HAVE_CYGWIN */
123