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 1.53 2002/03/21 22:44:05 rees Exp $");
40 #include <openssl/evp.h>
49 #include "pathnames.h"
52 #ifdef HAVE___PROGNAME
53 extern char *__progname;
59 extern char *__progname;
61 /* Default files to add */
62 static char *default_files[] = {
63 _PATH_SSH_CLIENT_ID_RSA,
64 _PATH_SSH_CLIENT_ID_DSA,
65 _PATH_SSH_CLIENT_IDENTITY,
70 /* we keep a cache of one passphrases */
71 static char *pass = NULL;
76 memset(pass, 0, strlen(pass));
83 delete_file(AuthenticationConnection *ac, const char *filename)
89 public = key_load_public(filename, &comment);
91 printf("Bad key file %s\n", filename);
94 if (ssh_remove_identity(ac, public)) {
95 fprintf(stderr, "Identity removed: %s (%s)\n", filename, comment);
98 fprintf(stderr, "Could not remove identity: %s\n", filename);
106 /* Send a request to remove all identities. */
108 delete_all(AuthenticationConnection *ac)
112 if (ssh_remove_all_identities(ac, 1))
114 /* ignore error-code for ssh2 */
115 ssh_remove_all_identities(ac, 2);
118 fprintf(stderr, "All identities removed.\n");
120 fprintf(stderr, "Failed to remove all identities.\n");
126 add_file(AuthenticationConnection *ac, const char *filename)
130 char *comment = NULL;
134 if (stat(filename, &st) < 0) {
138 /* At first, try empty passphrase */
139 private = key_load_private(filename, "", &comment);
141 comment = xstrdup(filename);
143 if (private == NULL && pass != NULL)
144 private = key_load_private(filename, pass, NULL);
145 if (private == NULL) {
146 /* clear passphrase since it did not work */
148 snprintf(msg, sizeof msg, "Enter passphrase for %.200s: ",
151 pass = read_passphrase(msg, RP_ALLOW_STDIN);
152 if (strcmp(pass, "") == 0) {
157 private = key_load_private(filename, pass, &comment);
161 strlcpy(msg, "Bad passphrase, try again: ", sizeof msg);
164 if (ssh_add_identity(ac, private, comment)) {
165 fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
168 fprintf(stderr, "Could not add identity: %s\n", filename);
177 update_card(AuthenticationConnection *ac, int add, const char *id)
181 pin = read_passphrase("Enter passphrase for smartcard: ", RP_ALLOW_STDIN);
185 if (ssh_update_card(ac, add, id, pin)) {
186 fprintf(stderr, "Card %s: %s\n",
187 add ? "added" : "removed", id);
190 fprintf(stderr, "Could not %s card: %s\n",
191 add ? "add" : "remove", id);
197 list_identities(AuthenticationConnection *ac, int do_fp)
201 int had_identities = 0;
204 for (version = 1; version <= 2; version++) {
205 for (key = ssh_get_first_identity(ac, &comment, version);
207 key = ssh_get_next_identity(ac, &comment, version)) {
210 fp = key_fingerprint(key, SSH_FP_MD5,
212 printf("%d %s %s (%s)\n",
213 key_size(key), fp, comment, key_type(key));
216 if (!key_write(key, stdout))
217 fprintf(stderr, "key_write failed");
218 fprintf(stdout, " %s\n", comment);
224 if (!had_identities) {
225 printf("The agent has no identities.\n");
232 do_file(AuthenticationConnection *ac, int deleting, char *file)
235 if (delete_file(ac, file) == -1)
238 if (add_file(ac, file) == -1)
247 fprintf(stderr, "Usage: %s [options]\n", __progname);
248 fprintf(stderr, "Options:\n");
249 fprintf(stderr, " -l List fingerprints of all identities.\n");
250 fprintf(stderr, " -L List public key parameters of all identities.\n");
251 fprintf(stderr, " -d Delete identity.\n");
252 fprintf(stderr, " -D Delete all identities.\n");
254 fprintf(stderr, " -s reader Add key in smartcard reader.\n");
255 fprintf(stderr, " -e reader Remove key in smartcard reader.\n");
260 main(int argc, char **argv)
264 AuthenticationConnection *ac = NULL;
265 char *sc_reader_id = NULL;
266 int i, ch, deleting = 0, ret = 0;
268 __progname = get_progname(argv[0]);
272 SSLeay_add_all_algorithms();
274 /* At first, get a connection to the authentication agent. */
275 ac = ssh_get_authentication_connection();
277 fprintf(stderr, "Could not open a connection to your authentication agent.\n");
280 while ((ch = getopt(argc, argv, "lLdDe:s:")) != -1) {
284 if (list_identities(ac, ch == 'l' ? 1 : 0) == -1)
292 if (delete_all(ac) == -1)
297 sc_reader_id = optarg;
301 sc_reader_id = optarg;
311 if (sc_reader_id != NULL) {
312 if (update_card(ac, !deleting, sc_reader_id) == -1)
317 char buf[MAXPATHLEN];
322 if ((pw = getpwuid(getuid())) == NULL) {
323 fprintf(stderr, "No user found with uid %u\n",
329 for(i = 0; default_files[i]; i++) {
330 snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir,
332 if (stat(buf, &st) < 0)
334 if (do_file(ac, deleting, buf) == -1)
342 for(i = 0; i < argc; i++) {
343 if (do_file(ac, deleting, argv[i]) == -1)
350 ssh_close_authentication_connection(ac);