1/*-
2 * Copyright (c) 2009 Rick Macklem, University of Guelph
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD$");
30
31#include <sys/param.h>
32#include <sys/linker.h>
33#include <sys/module.h>
34#include <sys/mount.h>
35#include <sys/socket.h>
36#include <sys/sysctl.h>
37#include <sys/vnode.h>
38
39#include <netinet/in.h>
40
41#include <nfs/nfssvc.h>
42
43#include <fs/nfs/rpcv2.h>
44#include <fs/nfs/nfsproto.h>
45#include <fs/nfs/nfskpiport.h>
46#include <fs/nfs/nfs.h>
47
48#include <ctype.h>
49#include <err.h>
50#include <errno.h>
51#include <fcntl.h>
52#include <limits.h>
53#include <paths.h>
54#include <signal.h>
55#include <stdio.h>
56#include <stdlib.h>
57#include <string.h>
58#include <unistd.h>
59
60static void usage(void);
61
62int
63main(int argc, char **argv)
64{
65	char *cp;
66	u_char val;
67	int cnt, even;
68	struct nfsd_clid revoke_handle;
69
70	if (modfind("nfsd") < 0)
71		errx(1, "nfsd not loaded - self terminating");
72	if (argc != 2)
73		usage();
74	cnt = 0;
75	cp = argv[1];
76	if (strlen(cp) % 2)
77		even = 0;
78	else
79		even = 1;
80	val = 0;
81	while (*cp) {
82		if (*cp >= '0' && *cp <= '9')
83			val += (u_char)(*cp - '0');
84		else if (*cp >= 'A' && *cp <= 'F')
85			val += ((u_char)(*cp - 'A')) + 0xa;
86		else if (*cp >= 'a' && *cp <= 'f')
87			val += ((u_char)(*cp - 'a')) + 0xa;
88		else
89			errx(1, "Non hexadecimal digit in %s", argv[1]);
90		if (even) {
91			val <<= 4;
92			even = 0;
93		} else {
94			revoke_handle.nclid_id[cnt++] = val;
95			if (cnt > NFSV4_OPAQUELIMIT)
96				errx(1, "Clientid %s, loo long", argv[1]);
97			val = 0;
98			even = 1;
99		}
100		cp++;
101	}
102
103	/*
104	 * Do the revocation system call.
105	 */
106	revoke_handle.nclid_idlen = cnt;
107#ifdef DEBUG
108	printf("Idlen=%d\n", revoke_handle.nclid_idlen);
109	for (cnt = 0; cnt < revoke_handle.nclid_idlen; cnt++)
110		printf("%02x", revoke_handle.nclid_id[cnt]);
111	printf("\n");
112#else
113	if (nfssvc(NFSSVC_ADMINREVOKE, &revoke_handle) < 0)
114		err(1, "Admin revoke failed");
115#endif
116}
117
118static void
119usage(void)
120{
121
122	errx(1, "Usage: nfsrevoke <ClientID>");
123}
124