2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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4 * media and as a part of the software program in whole or part. Users
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16 * modification or enhancement.
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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
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28 * Mountain View, California 94043
30 * $DragonFly: src/usr.bin/chkey/chkey.c,v 1.6 2008/11/11 18:06:12 pavalos Exp $
31 * @(#)chkey.c 1.7 91/03/11 Copyr 1986 Sun Micro
34 * Copyright (C) 1986, Sun Microsystems, Inc.
38 * Command to change one's public key in the public key database
40 #include <sys/fcntl.h>
49 #include <rpc/key_prot.h>
51 #include <rpcsvc/yp_prot.h>
52 #include <rpcsvc/ypclnt.h>
53 #include <rpcsvc/yppasswd.h>
61 static struct passwd *ypgetpwuid(uid_t);
66 static char PKMAP[] = "publickey.byname";
68 static char PKFILE[] = "/etc/publickey";
70 static char ROOTKEY[] = "/etc/.rootkey";
72 static void usage(void);
73 static int setpublicmap(char *, char *, char *);
76 main(int argc, char **argv)
78 char name[MAXNETNAMELEN+1];
79 char public[HEXKEYBYTES + 1];
80 char secret[HEXKEYBYTES + 1];
81 char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
82 char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
96 while ((ch = getopt(argc, argv, "f")) != -1)
111 yp_get_default_domain(&domain);
112 if (yp_master(domain, PKMAP, &master) != 0)
113 errx(1, "can't find master of publickey database");
115 uid = getuid() /*geteuid()*/;
117 if (host2netname(name, NULL, NULL) == 0)
118 errx(1, "cannot convert hostname to netname");
120 if (user2netname(name, uid, NULL) == 0)
121 errx(1, "cannot convert username to netname");
123 printf("Generating new key for %s.\n", name);
128 pw = ypgetpwuid(uid);
135 "no NIS password entry found: can't change key");
138 "no password entry found: can't change key");
144 errx(1, "no password entry found: can't change key");
147 pass = getpass("Password:");
150 cryptpw = crypt(pass, pw->pw_passwd);
151 if (cryptpw == NULL || strcmp(cryptpw, pw->pw_passwd) != 0)
152 errx(1, "invalid password");
155 force = 1; /* Make this mandatory */
157 genkeys(public, secret, pass);
159 memcpy(crypt1, secret, HEXKEYBYTES);
160 memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
161 crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
162 xencrypt(crypt1, pass);
165 memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
166 xdecrypt(crypt2, getpass("Retype password:"));
167 if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0 ||
168 memcmp(crypt2, secret, HEXKEYBYTES) != 0)
169 errx(1, "password incorrect");
173 printf("Sending key change request to %s...\n", master);
175 status = setpublicmap(name, public, crypt1);
178 errx(1, "unable to update NIS database (%u): %s",
179 status, yperr_string(status));
181 errx(1, "unable to update publickey database");
187 * Root users store their key in /etc/$ROOTKEY so
188 * that they can auto reboot without having to be
189 * around to type a password. Storing this in a file
190 * is rather dubious: it should really be in the EEPROM
191 * so it does not go over the net.
195 fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
201 if (write(fd, secret, strlen(secret)) < 0 ||
202 write(fd, &newline, sizeof(newline)) < 0)
203 warn("%s: write", ROOTKEY);
207 if (key_setsecret(secret) < 0)
208 errx(1, "unable to login with new secret key");
217 fprintf(stderr, "usage: chkey [-f]\n");
224 * Set the entry in the public key file
227 setpublicmap(char *name, char *public, char *secret)
231 sprintf(pkent,"%s:%s", public, secret);
233 return (yp_update(domain, PKMAP, YPOP_STORE,
234 name, strlen(name), pkent, strlen(pkent)));
236 return (localupdate(name, PKFILE, YPOP_STORE,
237 strlen(name), name, strlen(pkent), pkent));
242 static struct passwd *
243 ypgetpwuid(uid_t uid)
248 static struct passwd pw;
251 sprintf(uidstr, "%d", uid);
252 if (yp_match(domain, "passwd.byuid", uidstr, strlen(uidstr),
253 &val, &vallen) != 0) {
256 p = strchr(val, ':');
260 pw.pw_passwd = p + 1;
261 p = strchr(pw.pw_passwd, ':');
268 #endif /* YPPASSWD */