2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * Adds an identity to the authentication server, or removes an identity.
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
13 * SSH2 implementation,
14 * Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
26 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 RCSID("$OpenBSD: ssh-add.c,v 1.63 2002/09/19 15:51:23 markus Exp $");
39 RCSID("$FreeBSD: src/crypto/openssh/ssh-add.c,v 1.1.1.1.2.6 2003/02/03 17:31:07 des Exp $");
40 RCSID("$DragonFly: src/crypto/openssh/Attic/ssh-add.c,v 1.2 2003/06/17 04:24:36 dillon Exp $");
42 #include <openssl/evp.h>
51 #include "pathnames.h"
55 #ifdef HAVE___PROGNAME
56 extern char *__progname;
62 extern char *__progname;
64 /* Default files to add */
65 static char *default_files[] = {
66 _PATH_SSH_CLIENT_ID_RSA,
67 _PATH_SSH_CLIENT_ID_DSA,
68 _PATH_SSH_CLIENT_IDENTITY,
72 /* Default lifetime (0 == forever) */
73 static int lifetime = 0;
75 /* we keep a cache of one passphrases */
76 static char *pass = NULL;
81 memset(pass, 0, strlen(pass));
88 delete_file(AuthenticationConnection *ac, const char *filename)
94 public = key_load_public(filename, &comment);
96 printf("Bad key file %s\n", filename);
99 if (ssh_remove_identity(ac, public)) {
100 fprintf(stderr, "Identity removed: %s (%s)\n", filename, comment);
103 fprintf(stderr, "Could not remove identity: %s\n", filename);
111 /* Send a request to remove all identities. */
113 delete_all(AuthenticationConnection *ac)
117 if (ssh_remove_all_identities(ac, 1))
119 /* ignore error-code for ssh2 */
120 ssh_remove_all_identities(ac, 2);
123 fprintf(stderr, "All identities removed.\n");
125 fprintf(stderr, "Failed to remove all identities.\n");
131 add_file(AuthenticationConnection *ac, const char *filename)
135 char *comment = NULL;
139 if (stat(filename, &st) < 0) {
143 /* At first, try empty passphrase */
144 private = key_load_private(filename, "", &comment);
146 comment = xstrdup(filename);
148 if (private == NULL && pass != NULL)
149 private = key_load_private(filename, pass, NULL);
150 if (private == NULL) {
151 /* clear passphrase since it did not work */
153 snprintf(msg, sizeof msg, "Enter passphrase for %.200s: ",
156 pass = read_passphrase(msg, RP_ALLOW_STDIN);
157 if (strcmp(pass, "") == 0) {
162 private = key_load_private(filename, pass, &comment);
166 strlcpy(msg, "Bad passphrase, try again: ", sizeof msg);
170 if (ssh_add_identity_constrained(ac, private, comment, lifetime)) {
171 fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
175 "Lifetime set to %d seconds\n", lifetime);
176 } else if (ssh_add_identity(ac, private, comment)) {
177 fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
180 fprintf(stderr, "Could not add identity: %s\n", filename);
190 update_card(AuthenticationConnection *ac, int add, const char *id)
194 pin = read_passphrase("Enter passphrase for smartcard: ", RP_ALLOW_STDIN);
198 if (ssh_update_card(ac, add, id, pin)) {
199 fprintf(stderr, "Card %s: %s\n",
200 add ? "added" : "removed", id);
203 fprintf(stderr, "Could not %s card: %s\n",
204 add ? "add" : "remove", id);
210 list_identities(AuthenticationConnection *ac, int do_fp)
214 int had_identities = 0;
217 for (version = 1; version <= 2; version++) {
218 for (key = ssh_get_first_identity(ac, &comment, version);
220 key = ssh_get_next_identity(ac, &comment, version)) {
223 fp = key_fingerprint(key, SSH_FP_MD5,
225 printf("%d %s %s (%s)\n",
226 key_size(key), fp, comment, key_type(key));
229 if (!key_write(key, stdout))
230 fprintf(stderr, "key_write failed");
231 fprintf(stdout, " %s\n", comment);
237 if (!had_identities) {
238 printf("The agent has no identities.\n");
245 lock_agent(AuthenticationConnection *ac, int lock)
247 char prompt[100], *p1, *p2;
248 int passok = 1, ret = -1;
250 strlcpy(prompt, "Enter lock password: ", sizeof(prompt));
251 p1 = read_passphrase(prompt, RP_ALLOW_STDIN);
253 strlcpy(prompt, "Again: ", sizeof prompt);
254 p2 = read_passphrase(prompt, RP_ALLOW_STDIN);
255 if (strcmp(p1, p2) != 0) {
256 fprintf(stderr, "Passwords do not match.\n");
259 memset(p2, 0, strlen(p2));
262 if (passok && ssh_lock_agent(ac, lock, p1)) {
263 fprintf(stderr, "Agent %slocked.\n", lock ? "" : "un");
266 fprintf(stderr, "Failed to %slock agent.\n", lock ? "" : "un");
267 memset(p1, 0, strlen(p1));
273 do_file(AuthenticationConnection *ac, int deleting, char *file)
276 if (delete_file(ac, file) == -1)
279 if (add_file(ac, file) == -1)
288 fprintf(stderr, "Usage: %s [options]\n", __progname);
289 fprintf(stderr, "Options:\n");
290 fprintf(stderr, " -l List fingerprints of all identities.\n");
291 fprintf(stderr, " -L List public key parameters of all identities.\n");
292 fprintf(stderr, " -d Delete identity.\n");
293 fprintf(stderr, " -D Delete all identities.\n");
294 fprintf(stderr, " -x Lock agent.\n");
295 fprintf(stderr, " -X Unlock agent.\n");
296 fprintf(stderr, " -t life Set lifetime (in seconds) when adding identities.\n");
298 fprintf(stderr, " -s reader Add key in smartcard reader.\n");
299 fprintf(stderr, " -e reader Remove key in smartcard reader.\n");
304 main(int argc, char **argv)
308 AuthenticationConnection *ac = NULL;
309 char *sc_reader_id = NULL;
310 int i, ch, deleting = 0, ret = 0;
312 __progname = get_progname(argv[0]);
316 SSLeay_add_all_algorithms();
318 /* At first, get a connection to the authentication agent. */
319 ac = ssh_get_authentication_connection();
321 fprintf(stderr, "Could not open a connection to your authentication agent.\n");
324 while ((ch = getopt(argc, argv, "lLdDxXe:s:t:")) != -1) {
328 if (list_identities(ac, ch == 'l' ? 1 : 0) == -1)
334 if (lock_agent(ac, ch == 'x' ? 1 : 0) == -1)
342 if (delete_all(ac) == -1)
347 sc_reader_id = optarg;
351 sc_reader_id = optarg;
354 if ((lifetime = convtime(optarg)) == -1) {
355 fprintf(stderr, "Invalid lifetime\n");
368 if (sc_reader_id != NULL) {
369 if (update_card(ac, !deleting, sc_reader_id) == -1)
374 char buf[MAXPATHLEN];
379 if ((pw = getpwuid(getuid())) == NULL) {
380 fprintf(stderr, "No user found with uid %u\n",
386 for(i = 0; default_files[i]; i++) {
387 snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir,
389 if (stat(buf, &st) < 0)
391 if (do_file(ac, deleting, buf) == -1)
399 for(i = 0; i < argc; i++) {
400 if (do_file(ac, deleting, argv[i]) == -1)
407 ssh_close_authentication_connection(ac);