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19 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
20 * OR ANY PART THEREOF.
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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];
93 while ((ch = getopt(argc, argv, "f")) != -1)
108 yp_get_default_domain(&domain);
109 if (yp_master(domain, PKMAP, &master) != 0)
110 errx(1, "can't find master of publickey database");
112 uid = getuid() /*geteuid()*/;
114 if (host2netname(name, NULL, NULL) == 0)
115 errx(1, "cannot convert hostname to netname");
117 if (user2netname(name, uid, NULL) == 0)
118 errx(1, "cannot convert username to netname");
120 printf("Generating new key for %s.\n", name);
125 pw = ypgetpwuid(uid);
132 "no NIS password entry found: can't change key");
135 "no password entry found: can't change key");
141 errx(1, "no password entry found: can't change key");
144 pass = getpass("Password:");
147 if (strcmp(crypt(pass, pw->pw_passwd), pw->pw_passwd) != 0)
148 errx(1, "invalid password");
151 force = 1; /* Make this mandatory */
153 genkeys(public, secret, pass);
155 memcpy(crypt1, secret, HEXKEYBYTES);
156 memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
157 crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
158 xencrypt(crypt1, pass);
161 memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
162 xdecrypt(crypt2, getpass("Retype password:"));
163 if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0 ||
164 memcmp(crypt2, secret, HEXKEYBYTES) != 0)
165 errx(1, "password incorrect");
169 printf("Sending key change request to %s...\n", master);
171 status = setpublicmap(name, public, crypt1);
174 errx(1, "unable to update NIS database (%u): %s",
175 status, yperr_string(status));
177 errx(1, "unable to update publickey database");
183 * Root users store their key in /etc/$ROOTKEY so
184 * that they can auto reboot without having to be
185 * around to type a password. Storing this in a file
186 * is rather dubious: it should really be in the EEPROM
187 * so it does not go over the net.
191 fd = open(ROOTKEY, O_WRONLY|O_TRUNC|O_CREAT, 0);
197 if (write(fd, secret, strlen(secret)) < 0 ||
198 write(fd, &newline, sizeof(newline)) < 0)
199 warn("%s: write", ROOTKEY);
203 if (key_setsecret(secret) < 0)
204 errx(1, "unable to login with new secret key");
213 fprintf(stderr, "usage: chkey [-f]\n");
220 * Set the entry in the public key file
223 setpublicmap(char *name, char *public, char *secret)
227 sprintf(pkent,"%s:%s", public, secret);
229 return (yp_update(domain, PKMAP, YPOP_STORE,
230 name, strlen(name), pkent, strlen(pkent)));
232 return (localupdate(name, PKFILE, YPOP_STORE,
233 strlen(name), name, strlen(pkent), pkent));
238 static struct passwd *
239 ypgetpwuid(uid_t uid)
244 static struct passwd pw;
247 sprintf(uidstr, "%d", uid);
248 if (yp_match(domain, "passwd.byuid", uidstr, strlen(uidstr),
249 &val, &vallen) != 0) {
252 p = strchr(val, ':');
256 pw.pw_passwd = p + 1;
257 p = strchr(pw.pw_passwd, ':');
264 #endif /* YPPASSWD */