1 /*
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
7 * program developed by the user or with the express written consent of
8 * Sun Microsystems, Inc.
9 *
10 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
11 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
12 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 *
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.
17 *
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.
21 *
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.
25 *
26 * Sun Microsystems, Inc.
27 * 2550 Garcia Avenue
28 * Mountain View, California 94043
29 */
30
31 #if !defined(lint) && defined(SCCSIDS)
32 #if 0
33 static char sccsid[] = "@(#)newkey.c 1.8 91/03/11 Copyr 1986 Sun Micro";
34 #endif
35 #endif
36
37 /*
38 * Copyright (C) 1986, Sun Microsystems, Inc.
39 */
40
41 /*
42 * Administrative tool to add a new user to the publickey database
43 */
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD: stable/9/usr.bin/newkey/newkey.c 189169 2009-02-28 16:16:37Z ed $");
46
47 #include <sys/types.h>
48 #include <sys/time.h>
49 #include <sys/resource.h>
50
51 #include <rpc/rpc.h>
52 #include <rpc/key_prot.h>
53
54 #ifdef YP
55 #include <sys/wait.h>
56 #include <rpcsvc/yp_prot.h>
57 #include <rpcsvc/ypclnt.h>
58 #include <netdb.h>
59 #endif /* YP */
60
61 #include <err.h>
62 #include <pwd.h>
63 #include <stdio.h>
64 #include <stdlib.h>
65 #include <string.h>
66 #include <unistd.h>
67
68 #include "extern.h"
69
70 #ifdef YP
71 #define MAXMAPNAMELEN 256
72 #else
73 #define YPOP_CHANGE 1 /* change, do not add */
74 #define YPOP_INSERT 2 /* add, do not change */
75 #define YPOP_DELETE 3 /* delete this entry */
76 #define YPOP_STORE 4 /* add, or change */
77 #define ERR_ACCESS 1
78 #define ERR_MALLOC 2
79 #define ERR_READ 3
80 #define ERR_WRITE 4
81 #define ERR_DBASE 5
82 #define ERR_KEY 6
83 #endif
84
85 #ifdef YP
86 static char YPDBPATH[]="/var/yp";
87 static char PKMAP[] = "publickey.byname";
88 #else
89 static char PKFILE[] = "/etc/publickey";
90 static const char *err_string(int);
91 #endif /* YP */
92
93 static void usage(void);
94
95 int
main(int argc,char * argv[])96 main(int argc, char *argv[])
97 {
98 char name[MAXNETNAMELEN + 1];
99 char public[HEXKEYBYTES + 1];
100 char secret[HEXKEYBYTES + 1];
101 char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
102 char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
103 int status;
104 char *pass;
105 struct passwd *pw;
106 #ifdef undef
107 struct hostent *h;
108 #endif
109
110 if (argc != 3 || !(strcmp(argv[1], "-u") == 0 ||
111 strcmp(argv[1], "-h") == 0)) {
112 usage();
113 }
114 if (geteuid() != 0)
115 errx(1, "must be superuser");
116
117 #ifdef YP
118 if (chdir(YPDBPATH) < 0)
119 warn("cannot chdir to %s", YPDBPATH);
120 #endif /* YP */
121 if (strcmp(argv[1], "-u") == 0) {
122 pw = getpwnam(argv[2]);
123 if (pw == NULL)
124 errx(1, "unknown user: %s", argv[2]);
125 (void)user2netname(name, (int)pw->pw_uid, (char *)NULL);
126 } else {
127 #ifdef undef
128 h = gethostbyname(argv[2]);
129 if (h == NULL)
130 errx(1, "unknown host: %s", argv[1]);
131 (void)host2netname(name, h->h_name, (char *)NULL);
132 #else
133 (void)host2netname(name, argv[2], (char *)NULL);
134 #endif
135 }
136
137 (void)printf("Adding new key for %s.\n", name);
138 pass = getpass("New password:");
139 genkeys(public, secret, pass);
140
141 memcpy(crypt1, secret, HEXKEYBYTES);
142 memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
143 crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
144 xencrypt(crypt1, pass);
145
146 memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);
147 xdecrypt(crypt2, getpass("Retype password:"));
148 if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0 ||
149 memcmp(crypt2, secret, HEXKEYBYTES) != 0)
150 errx(1, "password incorrect");
151
152 #ifdef YP
153 (void)printf("Please wait for the database to get updated...\n");
154 #endif
155 if ((status = setpublicmap(name, public, crypt1))) {
156 #ifdef YP
157 errx(1, "unable to update NIS database (%u): %s",
158 status, yperr_string(status));
159 #else
160 errx(1, "unable to update publickey database (%u): %s",
161 status, err_string(status));
162 #endif
163 }
164 (void)printf("Your new key has been successfully stored away.\n");
165 exit(0);
166 /* NOTREACHED */
167 }
168
169 static void
usage(void)170 usage(void)
171 {
172 (void)fprintf(stderr, "%s\n%s\n",
173 "usage: newkey -h hostname",
174 " newkey -u username");
175 exit(1);
176 }
177
178 /*
179 * Set the entry in the public key file
180 */
181 int
setpublicmap(char * name,char * public,char * secret)182 setpublicmap(char *name, char *public, char *secret)
183 {
184 char pkent[1024];
185
186 (void)sprintf(pkent, "%s:%s", public, secret);
187 #ifdef YP
188 return (mapupdate(name, PKMAP, YPOP_STORE,
189 strlen(name), name, strlen(pkent), pkent));
190 #else
191 return (localupdate(name, PKFILE, YPOP_STORE,
192 strlen(name), name, strlen(pkent), pkent));
193 #endif
194 }
195
196 #ifndef YP
197 /*
198 * This returns a pointer to an error message string appropriate
199 * to an input error code. An input value of zero will return
200 * a success message.
201 */
202 static const char *
err_string(int code)203 err_string(int code)
204 {
205 const char *pmesg;
206
207 switch (code) {
208 case 0:
209 pmesg = "update operation succeeded";
210 break;
211 case ERR_KEY:
212 pmesg = "no such key in file";
213 break;
214 case ERR_READ:
215 pmesg = "cannot read the database";
216 break;
217 case ERR_WRITE:
218 pmesg = "cannot write to the database";
219 break;
220 case ERR_DBASE:
221 pmesg = "cannot update database";
222 break;
223 case ERR_ACCESS:
224 pmesg = "permission denied";
225 break;
226 case ERR_MALLOC:
227 pmesg = "malloc failed";
228 break;
229 default:
230 pmesg = "unknown error";
231 break;
232 }
233 return (pmesg);
234 }
235 #endif
236