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30 * $DragonFly: src/usr.bin/chkey/chkey.c,v 1.5 2005/01/11 00:51:11 joerg 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>
48 #include <rpc/key_prot.h>
50 #include <rpcsvc/yp_prot.h>
51 #include <rpcsvc/ypclnt.h>
52 #include <rpcsvc/yppasswd.h>
60 static struct passwd *ypgetpwuid(uid_t);
65 static char PKMAP[] = "publickey.byname";
67 static char PKFILE[] = "/etc/publickey";
69 static char ROOTKEY[] = "/etc/.rootkey";
71 static void usage(char *);
72 static int setpublicmap(char *, char *, char *);
75 main(int argc, char **argv)
77 char name[MAXNETNAMELEN+1];
78 char public[HEXKEYBYTES + 1];
79 char secret[HEXKEYBYTES + 1];
80 char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
81 char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
93 for (argc--, argv++; argc > 0 && **argv == '-'; argc--, argv++) {
94 if (argv[0][2] != 0) {
110 (void)yp_get_default_domain(&domain);
111 if (yp_master(domain, PKMAP, &master) != 0) {
112 (void)fprintf(stderr,
113 "can't find master of publickey database\n");
117 uid = getuid() /*geteuid()*/;
119 if (host2netname(name, NULL, NULL) == 0) {
120 (void)fprintf(stderr,
121 "chkey: cannot convert hostname to netname\n");
125 if (user2netname(name, uid, NULL) == 0) {
126 (void)fprintf(stderr,
127 "chkey: cannot convert username to netname\n");
131 (void)printf("Generating new key for %s.\n", name);
136 pw = ypgetpwuid(uid);
142 (void)fprintf(stderr,
143 "No NIS password entry found: can't change key.\n");
145 (void)fprintf(stderr,
146 "No password entry found: can't change key.\n");
153 (void)fprintf(stderr,
154 "No password entry found: can't change key.\n");
159 pass = getpass("Password:");
162 if (strcmp(crypt(pass, pw->pw_passwd), pw->pw_passwd) != 0) {
163 (void)fprintf(stderr, "Invalid password.\n");
168 force = 1; /* Make this mandatory */
170 genkeys(public, secret, pass);
172 memcpy(crypt1, secret, HEXKEYBYTES);
173 memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
174 crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
175 xencrypt(crypt1, pass);
178 memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
179 xdecrypt(crypt2, getpass("Retype password:"));
180 if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0 ||
181 memcmp(crypt2, secret, HEXKEYBYTES) != 0) {
182 (void)fprintf(stderr, "Password incorrect.\n");
188 (void)printf("Sending key change request to %s...\n", master);
190 status = setpublicmap(name, public, crypt1);
193 (void)fprintf(stderr,
194 "%s: unable to update NIS database (%u): %s\n",
195 self, status, yperr_string(status));
197 (void)fprintf(stderr,
198 "%s: unable to update publickey database\n", self);
205 * Root users store their key in /etc/$ROOTKEY so
206 * that they can auto reboot without having to be
207 * around to type a password. Storing this in a file
208 * is rather dubious: it should really be in the EEPROM
209 * so it does not go over the net.
213 fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
219 if (write(fd, secret, strlen(secret)) < 0 ||
220 write(fd, &newline, sizeof(newline)) < 0) {
221 (void)fprintf(stderr, "%s: ", ROOTKEY);
227 if (key_setsecret(secret) < 0) {
228 (void)printf("Unable to login with new secret key.\n");
231 (void)printf("Done.\n");
239 (void)fprintf(stderr, "usage: %s [-f]\n", name);
246 * Set the entry in the public key file
249 setpublicmap(char *name, char *public, char *secret)
253 (void)sprintf(pkent,"%s:%s", public, secret);
255 return (yp_update(domain, PKMAP, YPOP_STORE,
256 name, strlen(name), pkent, strlen(pkent)));
258 return (localupdate(name, PKFILE, YPOP_STORE,
259 strlen(name), name, strlen(pkent), pkent));
264 static struct passwd *
265 ypgetpwuid(uid_t uid)
270 static struct passwd pw;
273 (void)sprintf(uidstr, "%d", uid);
274 if (yp_match(domain, "passwd.byuid", uidstr, strlen(uidstr),
275 &val, &vallen) != 0) {
278 p = strchr(val, ':');
282 pw.pw_passwd = p + 1;
283 p = strchr(pw.pw_passwd, ':');
290 #endif /* YPPASSWD */