summaryrefslogtreecommitdiffstats
path: root/usr.bin/newkey/newkey.c
blob: 12dc639eb30f3c058373c9bb5b27cd1ce8705980 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user or with the express written consent of
 * Sun Microsystems, Inc.
 *
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 *
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 *
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 *
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 *
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */

#if !defined(lint) && defined(SCCSIDS)
#if 0
static char sccsid[] = "@(#)newkey.c 1.8 91/03/11 Copyr 1986 Sun Micro";
#endif
#endif

/*
 * Copyright (C) 1986, Sun Microsystems, Inc.
 */

/*
 * Administrative tool to add a new user to the publickey database
 */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>

#include <rpc/rpc.h>
#include <rpc/key_prot.h>

#ifdef YP
#include <sys/wait.h>
#include <rpcsvc/yp_prot.h>
#include <rpcsvc/ypclnt.h>
#include <netdb.h>
#endif	/* YP */

#include <err.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "extern.h"

#ifdef YP
#define MAXMAPNAMELEN 256
#else
#define	YPOP_CHANGE 1			/* change, do not add */
#define	YPOP_INSERT 2			/* add, do not change */
#define	YPOP_DELETE 3			/* delete this entry */
#define	YPOP_STORE  4			/* add, or change */
#define	ERR_ACCESS	1
#define	ERR_MALLOC	2
#define	ERR_READ	3
#define	ERR_WRITE	4
#define	ERR_DBASE	5
#define	ERR_KEY		6
#endif

#ifdef YP
static char YPDBPATH[]="/var/yp";
static char PKMAP[] = "publickey.byname";
#else
static char PKFILE[] = "/etc/publickey";
static char *err_string();
#endif	/* YP */

static void usage(void);

int
main(int argc, char *argv[])
{
	char name[MAXNETNAMELEN + 1];
	char public[HEXKEYBYTES + 1];
	char secret[HEXKEYBYTES + 1];
	char crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
	char crypt2[HEXKEYBYTES + KEYCHECKSUMSIZE + 1];
	int status;	
	char *pass;
	struct passwd *pw;
#ifdef undef
	struct hostent *h;
#endif

	if (argc != 3 || !(strcmp(argv[1], "-u") == 0 ||
		strcmp(argv[1], "-h") == 0)) {
		usage();
	}
	if (geteuid() != 0)
		errx(1, "must be superuser");

#ifdef YP
	if (chdir(YPDBPATH) < 0)
		warn("cannot chdir to %s", YPDBPATH);
#endif	/* YP */
	if (strcmp(argv[1], "-u") == 0) {
		pw = getpwnam(argv[2]);
		if (pw == NULL)
			errx(1, "unknown user: %s", argv[2]);
		(void)user2netname(name, (int)pw->pw_uid, (char *)NULL);
	} else {
#ifdef undef
		h = gethostbyname(argv[2]);
		if (h == NULL)
			errx(1, "unknown host: %s", argv[1]);
		(void)host2netname(name, h->h_name, (char *)NULL);
#else
		(void)host2netname(name, argv[2], (char *)NULL);
#endif
	}

	(void)printf("Adding new key for %s.\n", name);
	pass = getpass("New password:");
	genkeys(public, secret, pass);

	memcpy(crypt1, secret, HEXKEYBYTES);
	memcpy(crypt1 + HEXKEYBYTES, secret, KEYCHECKSUMSIZE);
	crypt1[HEXKEYBYTES + KEYCHECKSUMSIZE] = 0;
	xencrypt(crypt1, pass);

	memcpy(crypt2, crypt1, HEXKEYBYTES + KEYCHECKSUMSIZE + 1);	
	xdecrypt(crypt2, getpass("Retype password:"));
	if (memcmp(crypt2, crypt2 + HEXKEYBYTES, KEYCHECKSUMSIZE) != 0 ||
		memcmp(crypt2, secret, HEXKEYBYTES) != 0)
		errx(1, "password incorrect");

#ifdef YP
	(void)printf("Please wait for the database to get updated...\n");
#endif
	if ((status = setpublicmap(name, public, crypt1))) {
#ifdef YP
		errx(1, "unable to update NIS database (%u): %s", 
			status, yperr_string(status));
#else
		errx(1, "unable to update publickey database (%u): %s",
			status, err_string(status));
#endif
	}
	(void)printf("Your new key has been successfully stored away.\n");
	exit(0);
	/* NOTREACHED */
}

static void
usage(void)
{
	(void)fprintf(stderr, "%s\n%s\n",
		"usage: newkey [-u username]",
		"       newkey [-h hostname]");
	exit(1);
}

/*
 * Set the entry in the public key file
 */
int
setpublicmap(char *name, char *public, char *secret)
{
	char pkent[1024];

	(void)sprintf(pkent, "%s:%s", public, secret);
#ifdef YP
	return (mapupdate(name, PKMAP, YPOP_STORE,
		strlen(name), name, strlen(pkent), pkent));
#else
	return (localupdate(name, PKFILE, YPOP_STORE,
		strlen(name), name, strlen(pkent), pkent));
#endif
	}
 
#ifndef YP
	/*
	 * This returns a pointer to an error message string appropriate
	 * to an input error code.  An input value of zero will return
	 * a success message.
	 */
static char *
err_string(int code)
{
	char *pmesg;

	switch (code) {
	case 0:
		pmesg = "update operation succeeded";
		break;
	case ERR_KEY:
		pmesg = "no such key in file";
		break;
	case ERR_READ:
		pmesg = "cannot read the database";
		break;
	case ERR_WRITE:
		pmesg = "cannot write to the database";
		break;
	case ERR_DBASE:
		pmesg = "cannot update database";
		break;
	case ERR_ACCESS:
		pmesg = "permission denied";
		break;
	case ERR_MALLOC:
		pmesg = "malloc failed";
		break;
	default:
		pmesg = "unknown error";
		break;
	}
	return (pmesg);
}
#endif
OpenPOWER on IntegriCloud