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30 * $DragonFly: src/usr.bin/chkey/chkey.c,v 1.3 2003/10/02 17:42:26 hmp 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
42 #include <rpc/key_prot.h>
44 #include <rpcsvc/yp_prot.h>
45 #include <rpcsvc/ypclnt.h>
51 #include <sys/fcntl.h>
53 extern char *getpass();
57 struct passwd *ypgetpwuid();
62 static char PKMAP[] = "publickey.byname";
64 static char PKFILE[] = "/etc/publickey";
66 static char ROOTKEY[] = "/etc/.rootkey";
68 main(int argc, char **argv)
70 char name[MAXNETNAMELEN+1];
71 char public[HEXKEYBYTES + 1];
72 char secret[HEXKEYBYTES + 1];
73 char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
74 char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
86 for (argc--, argv++; argc > 0 && **argv == '-'; argc--, argv++) {
87 if (argv[0][2] != 0) {
103 (void)yp_get_default_domain(&domain);
104 if (yp_master(domain, PKMAP, &master) != 0) {
105 (void)fprintf(stderr,
106 "can't find master of publickey database\n");
110 uid = getuid() /*geteuid()*/;
112 if (host2netname(name, NULL, NULL) == 0) {
113 (void)fprintf(stderr,
114 "chkey: cannot convert hostname to netname\n");
118 if (user2netname(name, uid, NULL) == 0) {
119 (void)fprintf(stderr,
120 "chkey: cannot convert username to netname\n");
124 (void)printf("Generating new key for %s.\n", name);
129 pw = ypgetpwuid(uid);
135 (void)fprintf(stderr,
136 "No NIS password entry found: can't change key.\n");
138 (void)fprintf(stderr,
139 "No password entry found: can't change key.\n");
146 (void)fprintf(stderr,
147 "No password entry found: can't change key.\n");
152 pass = getpass("Password:");
155 if (strcmp(crypt(pass, pw->pw_passwd), pw->pw_passwd) != 0) {
156 (void)fprintf(stderr, "Invalid password.\n");
161 force = 1; /* Make this mandatory */
163 genkeys(public, secret, pass);
165 memcpy(crypt1, secret, HEXKEYBYTES);
166 memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
167 crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
168 xencrypt(crypt1, pass);
171 memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
172 xdecrypt(crypt2, getpass("Retype password:"));
173 if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0 ||
174 memcmp(crypt2, secret, HEXKEYBYTES) != 0) {
175 (void)fprintf(stderr, "Password incorrect.\n");
181 (void)printf("Sending key change request to %s...\n", master);
183 status = setpublicmap(name, public, crypt1);
186 (void)fprintf(stderr,
187 "%s: unable to update NIS database (%u): %s\n",
188 self, status, yperr_string(status));
190 (void)fprintf(stderr,
191 "%s: unable to update publickey database\n", self);
198 * Root users store their key in /etc/$ROOTKEY so
199 * that they can auto reboot without having to be
200 * around to type a password. Storing this in a file
201 * is rather dubious: it should really be in the EEPROM
202 * so it does not go over the net.
206 fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
212 if (write(fd, secret, strlen(secret)) < 0 ||
213 write(fd, &newline, sizeof(newline)) < 0) {
214 (void)fprintf(stderr, "%s: ", ROOTKEY);
220 if (key_setsecret(secret) < 0) {
221 (void)printf("Unable to login with new secret key.\n");
224 (void)printf("Done.\n");
231 (void)fprintf(stderr, "usage: %s [-f]\n", name);
238 * Set the entry in the public key file
240 setpublicmap(char *name, char *public, char *secret)
244 (void)sprintf(pkent,"%s:%s", public, secret);
246 return (yp_update(domain, PKMAP, YPOP_STORE,
247 name, strlen(name), pkent, strlen(pkent)));
249 return (localupdate(name, PKFILE, YPOP_STORE,
250 strlen(name), name, strlen(pkent), pkent));
256 ypgetpwuid(uid_t uid)
261 static struct passwd pw;
264 (void)sprintf(uidstr, "%d", uid);
265 if (yp_match(domain, "passwd.byuid", uidstr, strlen(uidstr),
266 &val, &vallen) != 0) {
273 pw.pw_passwd = p + 1;
274 p = index(pw.pw_passwd, ':');
281 #endif /* YPPASSWD */