2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user or with the express written consent of
8 * Sun Microsystems, Inc.
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
14 * Sun RPC is provided with no support and without any obligation on the
15 * part of Sun Microsystems, Inc. to assist in its use, correction,
16 * modification or enhancement.
18 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
22 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
23 * or profits or other special, indirect and consequential damages, even if
24 * Sun has been advised of the possibility of such damages.
26 * Sun Microsystems, Inc.
28 * Mountain View, California 94043
33 static char sccsid[] = "@(#)chkey.c 1.7 91/03/11 Copyr 1986 Sun Micro";
37 #include <sys/cdefs.h>
38 __FBSDID("$FreeBSD$");
41 * Copyright (C) 1986, Sun Microsystems, Inc.
45 * Command to change one's public key in the public key database
48 #include <rpc/key_prot.h>
50 #include <rpcsvc/yp_prot.h>
51 #include <rpcsvc/ypclnt.h>
55 #include <sys/fcntl.h>
66 struct passwd *ypgetpwuid(uid_t);
71 static char PKMAP[] = "publickey.byname";
73 static char PKFILE[] = "/etc/publickey";
75 static char ROOTKEY[] = "/etc/.rootkey";
77 static void usage(void);
78 extern int yp_update(char *, char *, int, char *, size_t, char *, size_t);
81 main(int argc, char **argv)
83 char name[MAXNETNAMELEN+1];
84 char public[HEXKEYBYTES + 1];
85 char secret[HEXKEYBYTES + 1];
86 char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
87 char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
98 while ((ch = getopt(argc, argv, "f")) != -1)
113 (void)yp_get_default_domain(&domain);
114 if (yp_master(domain, PKMAP, &master) != 0)
115 errx(1, "can't find master of publickey database");
117 uid = getuid() /*geteuid()*/;
119 if (host2netname(name, NULL, NULL) == 0)
120 errx(1, "cannot convert hostname to netname");
122 if (user2netname(name, uid, NULL) == 0)
123 errx(1, "cannot convert username to netname");
125 (void)printf("Generating new key for %s.\n", name);
130 pw = ypgetpwuid(uid);
137 "no NIS password entry found: can't change key");
140 "no password entry found: can't change key");
146 errx(1, "no password entry found: can't change key");
149 pass = getpass("Password:");
152 if (strcmp(crypt(pass, pw->pw_passwd), pw->pw_passwd) != 0)
153 errx(1, "invalid password");
156 force = 1; /* Make this mandatory */
158 genkeys(public, secret, pass);
160 memcpy(crypt1, secret, HEXKEYBYTES);
161 memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
162 crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
163 xencrypt(crypt1, pass);
166 memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
167 xdecrypt(crypt2, getpass("Retype password:"));
168 if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0
169 || memcmp(crypt2, secret, HEXKEYBYTES) != 0)
170 errx(1, "password incorrect");
174 (void)printf("Sending key change request to %s...\n", master);
176 status = setpublicmap(name, public, crypt1);
179 errx(1, "unable to update NIS database (%u): %s",
180 status, yperr_string(status));
182 errx(1, "unable to update publickey database");
188 * Root users store their key in /etc/$ROOTKEY so
189 * that they can auto reboot without having to be
190 * around to type a password. Storing this in a file
191 * is rather dubious: it should really be in the EEPROM
192 * so it does not go over the net.
196 fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
202 if (write(fd, secret, strlen(secret)) < 0 ||
203 write(fd, &newline, sizeof(newline)) < 0)
204 warn("%s: write", ROOTKEY);
209 if (key_setsecret(secret) < 0)
210 errx(1, "unable to login with new secret key");
211 (void)printf("Done.\n");
219 (void)fprintf(stderr, "usage: chkey [-f]\n");
226 * Set the entry in the public key file
229 setpublicmap(char *name, char *public, char *secret)
233 (void)sprintf(pkent,"%s:%s", public, secret);
235 return (yp_update(domain, PKMAP, YPOP_STORE,
236 name, strlen(name), pkent, strlen(pkent)));
238 return (localupdate(name, PKFILE, YPOP_STORE,
239 strlen(name), name, strlen(pkent), pkent));
245 ypgetpwuid(uid_t uid)
250 static struct passwd pw;
253 (void)sprintf(uidstr, "%d", uid);
254 if (yp_match(domain, "passwd.byuid", uidstr, strlen(uidstr),
255 &val, &vallen) != 0) {
258 p = strchr(val, ':');
262 pw.pw_passwd = p + 1;
263 p = strchr(pw.pw_passwd, ':');
270 #endif /* YPPASSWD */