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wpaul
commit
98814c182d
14
usr.bin/chkey/Makefile
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14
usr.bin/chkey/Makefile
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# $Id$
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PROG= chkey
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SRCS= chkey.c update.c generic.c
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.PATH: ${.CURDIR}/../newkey
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MAN1= chkey.1
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CFLAGS+= -DYP
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LDADD+= -lrpcsvc -lmp -lgmp
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.include <bsd.prog.mk>
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21
usr.bin/chkey/chkey.1
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21
usr.bin/chkey/chkey.1
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.\" @(#)chkey.1 1.5 91/03/11 TIRPC 1.0;
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.\" Copyright (c) 1988 Sun Microsystems, Inc. - All Rights Reserved.
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.\"
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.TH CHKEY 1 "5 July 1989"
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.SH NAME
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chkey \- change your encryption key
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.SH SYNOPSIS
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.B chkey
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.SH DESCRIPTION
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.LP
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.B chkey
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prompts the user for their login password,
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and uses it to encrypt a new encryption key
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for the user to be stored in the
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.BR publickey (5)
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database.
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.SH "SEE ALSO"
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.BR keylogin (1),
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.BR publickey (5),
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.BR keyserv (8C),
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.BR newkey (8).
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288
usr.bin/chkey/chkey.c
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288
usr.bin/chkey/chkey.c
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user or with the express written consent of
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* Sun Microsystems, Inc.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#ifndef lint
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static char sccsid[] = "@(#)chkey.c 1.7 91/03/11 Copyr 1986 Sun Micro";
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#endif
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/*
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* Copyright (C) 1986, Sun Microsystems, Inc.
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*/
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/*
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* Command to change one's public key in the public key database
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*/
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#include <stdio.h>
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#include <rpc/rpc.h>
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#include <rpc/key_prot.h>
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#ifdef YP
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#else
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#define YPOP_STORE 4
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#endif
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#include <pwd.h>
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#include <string.h>
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#include <sys/fcntl.h>
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extern char *getpass();
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#define index strchr
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extern char *crypt();
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#ifdef YPPASSWD
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struct passwd *ypgetpwuid();
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#endif
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#ifdef YP
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static char *domain;
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static char PKMAP[] = "publickey.byname";
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#else
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static char PKFILE[] = "/etc/publickey";
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#endif /* YP */
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static char ROOTKEY[] = "/etc/.rootkey";
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main(argc, argv)
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int argc;
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char **argv;
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{
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char name[MAXNETNAMELEN+1];
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char public[HEXKEYBYTES + 1];
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char secret[HEXKEYBYTES + 1];
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char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
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char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
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int status;
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char *pass;
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struct passwd *pw;
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uid_t uid;
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int force = 0;
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char *self;
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#ifdef YP
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char *master;
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#endif
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self = argv[0];
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for (argc--, argv++; argc > 0 && **argv == '-'; argc--, argv++) {
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if (argv[0][2] != 0) {
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usage(self);
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}
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switch (argv[0][1]) {
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case 'f':
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force = 1;
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break;
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default:
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usage(self);
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}
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}
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if (argc != 0) {
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usage(self);
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}
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#ifdef YP
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(void)yp_get_default_domain(&domain);
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if (yp_master(domain, PKMAP, &master) != 0) {
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(void)fprintf(stderr,
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"can't find master of publickey database\n");
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exit(1);
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}
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#endif
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uid = getuid() /*geteuid()*/;
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if (uid == 0) {
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if (host2netname(name, NULL, NULL) == 0) {
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(void)fprintf(stderr,
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"chkey: cannot convert hostname to netname\n");
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exit(1);
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}
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} else {
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if (user2netname(name, uid, NULL) == 0) {
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(void)fprintf(stderr,
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"chkey: cannot convert username to netname\n");
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exit(1);
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}
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}
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(void)printf("Generating new key for %s.\n", name);
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if (!force) {
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if (uid != 0) {
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#ifdef YPPASSWD
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pw = ypgetpwuid(uid);
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#else
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pw = getpwuid(uid);
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#endif
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if (pw == NULL) {
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#ifdef YPPASSWD
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(void)fprintf(stderr,
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"No NIS password entry found: can't change key.\n");
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#else
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(void)fprintf(stderr,
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"No password entry found: can't change key.\n");
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#endif
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exit(1);
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}
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} else {
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pw = getpwuid(0);
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if (pw == NULL) {
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(void)fprintf(stderr,
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"No password entry found: can't change key.\n");
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exit(1);
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}
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}
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}
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pass = getpass("Password:");
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#ifdef YPPASSWD
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if (!force) {
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if (strcmp(crypt(pass, pw->pw_passwd), pw->pw_passwd) != 0) {
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(void)fprintf(stderr, "Invalid password.\n");
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exit(1);
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}
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}
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#else
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force = 1; /* Make this mandatory */
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#endif
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genkeys(public, secret, pass);
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memcpy(crypt1, secret, HEXKEYBYTES);
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memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
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crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
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xencrypt(crypt1, pass);
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if (force) {
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memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
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xdecrypt(crypt2, getpass("Retype password:"));
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if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0 ||
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memcmp(crypt2, secret, HEXKEYBYTES) != 0) {
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(void)fprintf(stderr, "Password incorrect.\n");
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exit(1);
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}
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}
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#ifdef YP
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(void)printf("Sending key change request to %s...\n", master);
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#endif
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status = setpublicmap(name, public, crypt1);
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if (status != 0) {
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#ifdef YP
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(void)fprintf(stderr,
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"%s: unable to update NIS database (%u): %s\n",
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self, status, yperr_string(status));
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#else
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(void)fprintf(stderr,
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"%s: unable to update publickey database\n", self);
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#endif
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exit(1);
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}
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if (uid == 0) {
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/*
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* Root users store their key in /etc/$ROOTKEY so
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* that they can auto reboot without having to be
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* around to type a password. Storing this in a file
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* is rather dubious: it should really be in the EEPROM
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* so it does not go over the net.
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*/
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int fd;
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fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
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if (fd < 0) {
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perror(ROOTKEY);
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} else {
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char newline = '\n';
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if (write(fd, secret, strlen(secret)) < 0 ||
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write(fd, &newline, sizeof(newline)) < 0) {
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(void)fprintf(stderr, "%s: ", ROOTKEY);
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perror("write");
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}
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}
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}
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if (key_setsecret(secret) < 0) {
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(void)printf("Unable to login with new secret key.\n");
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exit(1);
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}
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(void)printf("Done.\n");
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exit(0);
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/* NOTREACHED */
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}
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usage(name)
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char *name;
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{
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(void)fprintf(stderr, "usage: %s [-f]\n", name);
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exit(1);
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/* NOTREACHED */
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}
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/*
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* Set the entry in the public key file
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*/
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setpublicmap(name, public, secret)
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char *name;
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char *public;
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char *secret;
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{
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char pkent[1024];
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(void)sprintf(pkent,"%s:%s", public, secret);
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#ifdef YP
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return (yp_update(domain, PKMAP, YPOP_STORE,
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name, strlen(name), pkent, strlen(pkent)));
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#else
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return (localupdate(name, PKFILE, YPOP_STORE,
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strlen(name), name, strlen(pkent), pkent));
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#endif
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}
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#ifdef YPPASSWD
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struct passwd *
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ypgetpwuid(uid)
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uid_t uid;
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{
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char uidstr[10];
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char *val;
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int vallen;
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static struct passwd pw;
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char *p;
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(void)sprintf(uidstr, "%d", uid);
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if (yp_match(domain, "passwd.byuid", uidstr, strlen(uidstr),
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&val, &vallen) != 0) {
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return (NULL);
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}
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p = index(val, ':');
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if (p == NULL) {
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return (NULL);
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}
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pw.pw_passwd = p + 1;
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p = index(pw.pw_passwd, ':');
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if (p == NULL) {
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return (NULL);
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}
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*p = 0;
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return (&pw);
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}
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#endif /* YPPASSWD */
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