1 /****************************************************************************
2 * Copyright (c) 1998,2001,2003 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Thomas E. Dickey <dickey@clark.net> 1998,2000,2001 *
31 ****************************************************************************/
33 #include <curses.priv.h>
37 MODULE_ID("$Id: access.c,v 1.10 2003/07/05 19:31:28 tom Exp $")
39 #define LOWERCASE(c) ((isalpha(UChar(c)) && isupper(UChar(c))) ? tolower(UChar(c)) : (c))
41 NCURSES_EXPORT(char *)
42 _nc_rootname(char *path)
44 char *result = _nc_basename(path);
45 #if !defined(MIXEDCASE_FILENAMES) || defined(PROG_EXT)
49 temp = strdup(result);
51 #if !defined(MIXEDCASE_FILENAMES)
53 for (s = result; *s != '\0'; ++s) {
58 if ((s = strrchr(result, '.')) != 0) {
59 if (!strcmp(s, PROG_EXT))
68 * Return index of the basename
70 NCURSES_EXPORT(unsigned)
71 _nc_pathlast(const char *path)
73 const char *test = strrchr(path, '/');
76 test = strrchr(path, '\\');
85 NCURSES_EXPORT(char *)
86 _nc_basename(char *path)
88 return path + _nc_pathlast(path);
92 _nc_access(const char *path, int mode)
94 if (access(path, mode) < 0) {
95 if ((mode & W_OK) != 0
97 && strlen(path) < PATH_MAX) {
99 char *leaf = _nc_basename(strcpy(head, path));
105 (void) strcpy(head, ".");
107 return access(head, R_OK | W_OK | X_OK);
114 #ifndef USE_ROOT_ENVIRON
116 * Returns true if we allow application to use environment variables that are
117 * used for searching lists of directories, etc.
125 #elif HAVE_GETEUID && HAVE_GETEGID
126 if (getuid() != geteuid()
127 || getgid() != getegid())
130 return getuid() != 0 && geteuid() != 0; /* ...finally, disallow root */