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
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10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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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>
39 * Copyright (C) 1986, Sun Microsystems, Inc.
43 * Command to change one's public key in the public key database
46 #include <rpc/key_prot.h>
48 #include <rpcsvc/yp_prot.h>
49 #include <rpcsvc/ypclnt.h>
53 #include <sys/fcntl.h>
64 struct passwd *ypgetpwuid(uid_t);
69 static char PKMAP[] = "publickey.byname";
71 static char PKFILE[] = "/etc/publickey";
73 static char ROOTKEY[] = "/etc/.rootkey";
75 static void usage(void) __dead2;
76 extern int yp_update(char *, char *, int, char *, size_t, char *, size_t);
79 main(int argc, char **argv)
81 char name[MAXNETNAMELEN+1];
82 char public[HEXKEYBYTES + 1];
83 char secret[HEXKEYBYTES + 1];
84 char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
85 char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
99 while ((ch = getopt(argc, argv, "f")) != -1)
114 (void)yp_get_default_domain(&domain);
115 if (yp_master(domain, PKMAP, &master) != 0)
116 errx(1, "can't find master of publickey database");
118 uid = getuid() /*geteuid()*/;
120 if (host2netname(name, NULL, NULL) == 0)
121 errx(1, "cannot convert hostname to netname");
123 if (user2netname(name, uid, NULL) == 0)
124 errx(1, "cannot convert username to netname");
126 (void)printf("Generating new key for %s.\n", name);
131 pw = ypgetpwuid(uid);
138 "no NIS password entry found: can't change key");
141 "no password entry found: can't change key");
147 errx(1, "no password entry found: can't change key");
150 pass = getpass("Password:");
153 cryptpw = crypt(pass, pw->pw_passwd);
154 if (cryptpw == NULL || strcmp(cryptpw, pw->pw_passwd) != 0)
155 errx(1, "invalid password");
158 force = 1; /* Make this mandatory */
160 genkeys(public, secret, pass);
162 memcpy(crypt1, secret, HEXKEYBYTES);
163 memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
164 crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
165 xencrypt(crypt1, pass);
168 memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
169 xdecrypt(crypt2, getpass("Retype password:"));
170 if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0
171 || memcmp(crypt2, secret, HEXKEYBYTES) != 0)
172 errx(1, "password incorrect");
176 (void)printf("Sending key change request to %s...\n", master);
178 status = setpublicmap(name, public, crypt1);
181 errx(1, "unable to update NIS database (%u): %s",
182 status, yperr_string(status));
184 errx(1, "unable to update publickey database");
190 * Root users store their key in /etc/$ROOTKEY so
191 * that they can auto reboot without having to be
192 * around to type a password. Storing this in a file
193 * is rather dubious: it should really be in the EEPROM
194 * so it does not go over the net.
198 fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
204 if (write(fd, secret, strlen(secret)) < 0 ||
205 write(fd, &newline, sizeof(newline)) < 0)
206 warn("%s: write", ROOTKEY);
211 if (key_setsecret(secret) < 0)
212 errx(1, "unable to login with new secret key");
213 (void)printf("Done.\n");
221 (void)fprintf(stderr, "usage: chkey [-f]\n");
228 * Set the entry in the public key file
231 setpublicmap(char *name, char *public, char *secret)
235 (void)sprintf(pkent,"%s:%s", public, secret);
237 return (yp_update(domain, PKMAP, YPOP_STORE,
238 name, strlen(name), pkent, strlen(pkent)));
240 return (localupdate(name, PKFILE, YPOP_STORE,
241 strlen(name), name, strlen(pkent), pkent));
247 ypgetpwuid(uid_t uid)
252 static struct passwd pw;
255 (void)sprintf(uidstr, "%d", uid);
256 if (yp_match(domain, "passwd.byuid", uidstr, strlen(uidstr),
257 &val, &vallen) != 0) {
260 p = strchr(val, ':');
264 pw.pw_passwd = p + 1;
265 p = strchr(pw.pw_passwd, ':');
272 #endif /* YPPASSWD */