3 * $Id: chkpath.c,v 1.2 2001/01/25 22:16:02 mdw Exp $
5 * Check a user's file search path
7 * (c) 1999 Mark Wooding
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of chkpath.
14 * chkpath is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * chkpath is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with chkpath; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Revision history --------------------------------------------------*
32 * Revision 1.2 2001/01/25 22:16:02 mdw
33 * Make flags be unsigned.
35 * Revision 1.1.1.1 1999/04/06 20:12:07 mdw
40 /*----- Header files ------------------------------------------------------*/
48 #include <mLib/alloc.h>
49 #include <mLib/mdwopt.h>
50 #include <mLib/quis.h>
51 #include <mLib/report.h>
55 /*----- Main code ---------------------------------------------------------*/
57 static void report(int what
, int verbose
,
58 const char *p
, const char *msg
,
66 static void usage(FILE *fp
)
68 fprintf(fp
, "Usage: %s [-vqstp] [PATH...]\n", QUIS
);
71 /* --- @version@ --- */
73 static void version(FILE *fp
)
75 fprintf(fp
, "%s version %s\n", QUIS
, VERSION
);
80 static void help(FILE *fp
)
86 Checks a path string (by default the PATH variable) for security. It\n\
87 ensures that only `root' or the calling user can write to all the parent\n\
88 directories of the path elements, so nobody can maliciously replace the\n\
89 binaries unexpectedly.\n\
91 Options provided are:\n\
93 -h, --help Display this help message.\n\
94 -V, --version Display the program's version number.\n\
95 -u, --usage Show a terse usage summary.\n\
97 -v, --verbose Be verbose about the search progress (cumulative).\n\
98 -q, --quiet Be quiet about the search progress (cumulative).\n\
99 -s, --sticky Consider sticky directories secure against\n\
100 modification by world and group (not recommended).\n\
101 -t, --trust-group Consider other members of your group trustworthy.\n\
102 -p, --print Write the secure path elements to standard output.\n\
107 int main(int argc
, char *argv
[])
118 /* --- Initialize the world --- */
122 /* --- Set up path scanning defaults --- */
125 cp
.cp_what
= (CP_WRWORLD
| CP_WRGRP
| CP_WROTHUSR
|
126 CP_ERROR
| CP_REPORT
| CP_SYMLINK
);
127 cp
.cp_report
= report
;
131 /* --- Parse the options --- */
134 static struct option opts
[] = {
135 { "help", 0, 0, 'h' },
136 { "version", 0, 0, 'V' },
137 { "usage", 0, 0, 'u' },
138 { "verbose", 0, 0, 'v' },
139 { "quiet", 0, 0, 'q' },
140 { "sticky", 0, 0, 's' },
141 { "trust-group", 0, 0, 't' },
142 { "print", 0, 0, 'p' },
145 int i
= mdwopt(argc
, argv
, "hVu vqstp", opts
, 0, 0, 0);
167 cp
.cp_what
|= CP_STICKYOK
;
170 cp
.cp_what
= (cp
.cp_what
& ~CP_WRGRP
) | CP_WROTHGRP
;
186 /* --- Sort out what needs doing --- */
188 if (optind
== argc
) {
189 path
= getenv("PATH");
195 for (i
= optind
; i
< argc
; i
++) {
196 p
= xstrdup(argv
[i
]);
199 int b
= path_check(q
, &cp
);
200 if (!b
&& (f
& f_print
)) {
218 /*----- That's all, folks -------------------------------------------------*/