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 60 void usage(void); 61 extern int errno; 62 63 int 64 main(int argc, char **argv) 65 { 66 char *cp; 67 u_char val; 68 int cnt, even; 69 struct nfsd_clid revoke; 70 71 if (modfind("nfsd") < 0) 72 errx(1, "nfsd not loaded - self terminating"); 73 if (argc != 2) 74 usage(); 75 cnt = 0; 76 cp = argv[1]; 77 if (strlen(cp) % 2) 78 even = 0; 79 else 80 even = 1; 81 val = 0; 82 while (*cp) { 83 if (*cp >= '0' & *cp <= '9') 84 val += (u_char)(*cp - '0'); 85 else if (*cp >= 'A' && *cp <= 'F') 86 val += ((u_char)(*cp - 'A')) + 0xa; 87 else if (*cp >= 'a' && *cp <= 'f') 88 val += ((u_char)(*cp - 'a')) + 0xa; 89 else 90 errx(1, "Non hexadecimal digit in %s", argv[1]); 91 if (even) { 92 val <<= 4; 93 even = 0; 94 } else { 95 revoke.nclid_id[cnt++] = val; 96 if (cnt > NFSV4_OPAQUELIMIT) 97 errx(1, "Clientid %s, loo long", argv[1]); 98 val = 0; 99 even = 1; 100 } 101 cp++; 102 } 103 104 /* 105 * Do the revocation system call. 106 */ 107 revoke.nclid_idlen = cnt; 108 #ifdef DEBUG 109 printf("Idlen=%d\n", revoke.nclid_idlen); 110 for (cnt = 0; cnt < revoke.nclid_idlen; cnt++) 111 printf("%02x", revoke.nclid_id[cnt]); 112 printf("\n"); 113 #else 114 if (nfssvc(NFSSVC_ADMINREVOKE, &revoke) < 0) 115 err(1, "Admin revoke failed"); 116 #endif 117 } 118 119 void 120 usage(void) 121 { 122 123 errx(1, "Usage: nfsrevoke <ClientID>"); 124 } 125