2000-02-24 14:29:47 +00:00
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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* Adds an identity to the authentication server, or removes an identity.
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2000-09-10 08:31:17 +00:00
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*
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* As far as I am concerned, the code I have written for this software
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* can be used freely for any purpose. Any derived versions of this
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* software must be clearly marked as such, and if the derived work is
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* incompatible with the protocol description in the RFC file, it must be
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* called by a name other than "ssh" or "Secure Shell".
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*
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* SSH2 implementation,
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2002-03-18 09:55:03 +00:00
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* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
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2000-09-10 08:31:17 +00:00
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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2000-02-24 14:29:47 +00:00
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*/
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#include "includes.h"
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2002-10-29 09:43:00 +00:00
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RCSID("$OpenBSD: ssh-add.c,v 1.63 2002/09/19 15:51:23 markus Exp $");
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2000-05-15 04:37:24 +00:00
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2000-09-10 08:31:17 +00:00
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#include <openssl/evp.h>
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2000-02-24 14:29:47 +00:00
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#include "ssh.h"
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2001-05-04 03:57:05 +00:00
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#include "rsa.h"
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#include "log.h"
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2000-02-24 14:29:47 +00:00
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#include "xmalloc.h"
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2000-05-15 04:37:24 +00:00
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#include "key.h"
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2000-09-10 08:31:17 +00:00
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#include "authfd.h"
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2000-05-15 04:37:24 +00:00
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#include "authfile.h"
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2001-05-04 03:57:05 +00:00
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#include "pathnames.h"
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#include "readpass.h"
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2002-06-23 14:01:54 +00:00
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#include "misc.h"
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2001-05-04 03:57:05 +00:00
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2002-06-27 22:31:32 +00:00
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#ifdef HAVE___PROGNAME
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extern char *__progname;
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#else
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char *__progname;
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#endif
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2002-03-18 09:55:03 +00:00
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/* argv0 */
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extern char *__progname;
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/* Default files to add */
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static char *default_files[] = {
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_PATH_SSH_CLIENT_ID_RSA,
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_PATH_SSH_CLIENT_ID_DSA,
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2002-06-23 14:01:54 +00:00
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_PATH_SSH_CLIENT_IDENTITY,
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2002-03-18 09:55:03 +00:00
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NULL
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};
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2002-06-23 14:01:54 +00:00
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/* Default lifetime (0 == forever) */
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static int lifetime = 0;
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2002-03-18 09:55:03 +00:00
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2001-05-04 03:57:05 +00:00
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/* we keep a cache of one passphrases */
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static char *pass = NULL;
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2002-03-18 09:55:03 +00:00
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static void
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2001-05-04 03:57:05 +00:00
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clear_pass(void)
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{
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if (pass) {
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memset(pass, 0, strlen(pass));
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xfree(pass);
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pass = NULL;
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}
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}
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2000-02-24 14:29:47 +00:00
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2002-03-18 09:55:03 +00:00
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static int
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2000-02-24 14:29:47 +00:00
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delete_file(AuthenticationConnection *ac, const char *filename)
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{
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2000-05-15 04:37:24 +00:00
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Key *public;
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2001-05-04 03:57:05 +00:00
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char *comment = NULL;
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2002-03-18 09:55:03 +00:00
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int ret = -1;
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2000-02-24 14:29:47 +00:00
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2001-05-04 03:57:05 +00:00
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public = key_load_public(filename, &comment);
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if (public == NULL) {
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printf("Bad key file %s\n", filename);
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2002-03-18 09:55:03 +00:00
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return -1;
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2000-02-24 14:29:47 +00:00
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}
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2002-03-18 09:55:03 +00:00
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if (ssh_remove_identity(ac, public)) {
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2000-02-24 14:29:47 +00:00
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fprintf(stderr, "Identity removed: %s (%s)\n", filename, comment);
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2002-03-18 09:55:03 +00:00
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ret = 0;
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} else
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2000-02-24 14:29:47 +00:00
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fprintf(stderr, "Could not remove identity: %s\n", filename);
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2002-03-18 09:55:03 +00:00
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2000-05-15 04:37:24 +00:00
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key_free(public);
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2000-02-24 14:29:47 +00:00
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xfree(comment);
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2002-03-18 09:55:03 +00:00
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return ret;
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2000-02-24 14:29:47 +00:00
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}
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2000-09-10 08:31:17 +00:00
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/* Send a request to remove all identities. */
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2002-03-18 09:55:03 +00:00
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static int
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2000-02-24 14:29:47 +00:00
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delete_all(AuthenticationConnection *ac)
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{
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2002-03-18 09:55:03 +00:00
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int ret = -1;
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2000-09-10 08:31:17 +00:00
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2002-03-18 09:55:03 +00:00
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if (ssh_remove_all_identities(ac, 1))
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ret = 0;
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2000-09-10 08:31:17 +00:00
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/* ignore error-code for ssh2 */
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ssh_remove_all_identities(ac, 2);
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2002-03-18 09:55:03 +00:00
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if (ret == 0)
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2000-02-24 14:29:47 +00:00
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fprintf(stderr, "All identities removed.\n");
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else
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2001-05-04 03:57:05 +00:00
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fprintf(stderr, "Failed to remove all identities.\n");
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2002-03-18 09:55:03 +00:00
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return ret;
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2000-02-24 14:29:47 +00:00
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}
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2002-03-18 09:55:03 +00:00
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static int
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2000-02-24 14:29:47 +00:00
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add_file(AuthenticationConnection *ac, const char *filename)
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{
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2000-09-10 08:31:17 +00:00
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struct stat st;
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2000-05-15 04:37:24 +00:00
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Key *private;
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2001-05-04 03:57:05 +00:00
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char *comment = NULL;
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char msg[1024];
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2002-03-18 09:55:03 +00:00
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int ret = -1;
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2000-02-24 14:29:47 +00:00
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2000-09-10 08:31:17 +00:00
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if (stat(filename, &st) < 0) {
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perror(filename);
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2002-03-18 09:55:03 +00:00
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return -1;
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2000-09-10 08:31:17 +00:00
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}
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2000-02-24 14:29:47 +00:00
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/* At first, try empty passphrase */
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2001-05-04 03:57:05 +00:00
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private = key_load_private(filename, "", &comment);
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if (comment == NULL)
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comment = xstrdup(filename);
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/* try last */
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if (private == NULL && pass != NULL)
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private = key_load_private(filename, pass, NULL);
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if (private == NULL) {
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/* clear passphrase since it did not work */
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clear_pass();
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2002-03-18 09:55:03 +00:00
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snprintf(msg, sizeof msg, "Enter passphrase for %.200s: ",
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2001-05-04 03:57:05 +00:00
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comment);
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2000-02-24 14:29:47 +00:00
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for (;;) {
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2002-03-18 09:55:03 +00:00
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pass = read_passphrase(msg, RP_ALLOW_STDIN);
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2000-02-24 14:29:47 +00:00
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if (strcmp(pass, "") == 0) {
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2001-05-04 03:57:05 +00:00
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clear_pass();
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xfree(comment);
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2002-03-18 09:55:03 +00:00
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return -1;
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2000-02-24 14:29:47 +00:00
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}
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2001-05-04 03:57:05 +00:00
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private = key_load_private(filename, pass, &comment);
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if (private != NULL)
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2000-02-24 14:29:47 +00:00
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break;
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2001-05-04 03:57:05 +00:00
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clear_pass();
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2002-03-18 09:55:03 +00:00
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strlcpy(msg, "Bad passphrase, try again: ", sizeof msg);
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2000-02-24 14:29:47 +00:00
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}
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}
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2002-06-23 14:01:54 +00:00
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if (ssh_add_identity_constrained(ac, private, comment, lifetime)) {
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2001-05-04 03:57:05 +00:00
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fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
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2002-03-18 09:55:03 +00:00
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ret = 0;
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2002-06-23 14:01:54 +00:00
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if (lifetime != 0)
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fprintf(stderr,
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"Lifetime set to %d seconds\n", lifetime);
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} else if (ssh_add_identity(ac, private, comment)) {
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fprintf(stderr, "Identity added: %s (%s)\n", filename, comment);
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ret = 0;
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} else {
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2000-02-24 14:29:47 +00:00
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fprintf(stderr, "Could not add identity: %s\n", filename);
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2002-06-23 14:01:54 +00:00
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}
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2002-03-18 09:55:03 +00:00
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2001-05-04 03:57:05 +00:00
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xfree(comment);
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2000-05-15 04:37:24 +00:00
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key_free(private);
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2002-03-18 09:55:03 +00:00
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return ret;
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}
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static int
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update_card(AuthenticationConnection *ac, int add, const char *id)
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{
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2002-06-23 14:01:54 +00:00
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char *pin;
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pin = read_passphrase("Enter passphrase for smartcard: ", RP_ALLOW_STDIN);
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if (pin == NULL)
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return -1;
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if (ssh_update_card(ac, add, id, pin)) {
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2002-03-18 09:55:03 +00:00
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fprintf(stderr, "Card %s: %s\n",
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add ? "added" : "removed", id);
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return 0;
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} else {
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fprintf(stderr, "Could not %s card: %s\n",
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add ? "add" : "remove", id);
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return -1;
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}
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2000-02-24 14:29:47 +00:00
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}
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2002-03-18 09:55:03 +00:00
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static int
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2001-05-04 03:57:05 +00:00
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list_identities(AuthenticationConnection *ac, int do_fp)
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2000-02-24 14:29:47 +00:00
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{
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2000-09-10 08:31:17 +00:00
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Key *key;
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2001-05-04 03:57:05 +00:00
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char *comment, *fp;
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2000-09-10 08:31:17 +00:00
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int had_identities = 0;
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int version;
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2000-02-24 14:29:47 +00:00
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2000-09-10 08:31:17 +00:00
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for (version = 1; version <= 2; version++) {
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for (key = ssh_get_first_identity(ac, &comment, version);
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2002-03-18 09:55:03 +00:00
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key != NULL;
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key = ssh_get_next_identity(ac, &comment, version)) {
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2000-09-10 08:31:17 +00:00
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had_identities = 1;
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2001-05-04 03:57:05 +00:00
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if (do_fp) {
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fp = key_fingerprint(key, SSH_FP_MD5,
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SSH_FP_HEX);
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printf("%d %s %s (%s)\n",
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key_size(key), fp, comment, key_type(key));
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xfree(fp);
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2000-02-24 14:29:47 +00:00
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} else {
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2000-09-10 08:31:17 +00:00
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if (!key_write(key, stdout))
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fprintf(stderr, "key_write failed");
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fprintf(stdout, " %s\n", comment);
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2000-02-24 14:29:47 +00:00
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}
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2000-09-10 08:31:17 +00:00
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key_free(key);
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xfree(comment);
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2000-02-24 14:29:47 +00:00
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}
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}
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2002-03-18 09:55:03 +00:00
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if (!had_identities) {
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2000-02-24 14:29:47 +00:00
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printf("The agent has no identities.\n");
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2002-03-18 09:55:03 +00:00
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return -1;
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}
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return 0;
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}
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2002-06-23 14:01:54 +00:00
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static int
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lock_agent(AuthenticationConnection *ac, int lock)
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{
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char prompt[100], *p1, *p2;
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int passok = 1, ret = -1;
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strlcpy(prompt, "Enter lock password: ", sizeof(prompt));
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p1 = read_passphrase(prompt, RP_ALLOW_STDIN);
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if (lock) {
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strlcpy(prompt, "Again: ", sizeof prompt);
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p2 = read_passphrase(prompt, RP_ALLOW_STDIN);
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if (strcmp(p1, p2) != 0) {
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fprintf(stderr, "Passwords do not match.\n");
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passok = 0;
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}
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memset(p2, 0, strlen(p2));
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xfree(p2);
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}
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if (passok && ssh_lock_agent(ac, lock, p1)) {
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fprintf(stderr, "Agent %slocked.\n", lock ? "" : "un");
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ret = 0;
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} else
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fprintf(stderr, "Failed to %slock agent.\n", lock ? "" : "un");
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memset(p1, 0, strlen(p1));
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xfree(p1);
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2002-10-29 09:43:00 +00:00
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return (ret);
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2002-06-23 14:01:54 +00:00
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}
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2002-03-18 09:55:03 +00:00
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static int
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do_file(AuthenticationConnection *ac, int deleting, char *file)
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{
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if (deleting) {
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if (delete_file(ac, file) == -1)
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return -1;
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} else {
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if (add_file(ac, file) == -1)
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return -1;
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}
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return 0;
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}
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static void
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usage(void)
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{
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|
fprintf(stderr, "Usage: %s [options]\n", __progname);
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fprintf(stderr, "Options:\n");
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fprintf(stderr, " -l List fingerprints of all identities.\n");
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fprintf(stderr, " -L List public key parameters of all identities.\n");
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fprintf(stderr, " -d Delete identity.\n");
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fprintf(stderr, " -D Delete all identities.\n");
|
2002-06-23 14:01:54 +00:00
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|
fprintf(stderr, " -x Lock agent.\n");
|
2002-10-29 09:43:00 +00:00
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|
fprintf(stderr, " -X Unlock agent.\n");
|
2002-06-23 14:01:54 +00:00
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|
|
fprintf(stderr, " -t life Set lifetime (in seconds) when adding identities.\n");
|
2002-03-18 09:55:03 +00:00
|
|
|
#ifdef SMARTCARD
|
|
|
|
fprintf(stderr, " -s reader Add key in smartcard reader.\n");
|
|
|
|
fprintf(stderr, " -e reader Remove key in smartcard reader.\n");
|
|
|
|
#endif
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
main(int argc, char **argv)
|
|
|
|
{
|
2002-03-18 09:55:03 +00:00
|
|
|
extern char *optarg;
|
|
|
|
extern int optind;
|
2000-02-24 14:29:47 +00:00
|
|
|
AuthenticationConnection *ac = NULL;
|
2002-03-18 09:55:03 +00:00
|
|
|
char *sc_reader_id = NULL;
|
|
|
|
int i, ch, deleting = 0, ret = 0;
|
2000-02-24 14:29:47 +00:00
|
|
|
|
2002-06-27 22:31:32 +00:00
|
|
|
__progname = get_progname(argv[0]);
|
|
|
|
init_rng();
|
|
|
|
seed_rng();
|
|
|
|
|
2001-05-04 03:57:05 +00:00
|
|
|
SSLeay_add_all_algorithms();
|
2000-09-10 08:31:17 +00:00
|
|
|
|
2000-02-24 14:29:47 +00:00
|
|
|
/* At first, get a connection to the authentication agent. */
|
|
|
|
ac = ssh_get_authentication_connection();
|
|
|
|
if (ac == NULL) {
|
|
|
|
fprintf(stderr, "Could not open a connection to your authentication agent.\n");
|
2002-03-18 09:55:03 +00:00
|
|
|
exit(2);
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
2002-06-23 14:01:54 +00:00
|
|
|
while ((ch = getopt(argc, argv, "lLdDxXe:s:t:")) != -1) {
|
2002-03-18 09:55:03 +00:00
|
|
|
switch (ch) {
|
|
|
|
case 'l':
|
|
|
|
case 'L':
|
|
|
|
if (list_identities(ac, ch == 'l' ? 1 : 0) == -1)
|
|
|
|
ret = 1;
|
|
|
|
goto done;
|
|
|
|
break;
|
2002-06-23 14:01:54 +00:00
|
|
|
case 'x':
|
|
|
|
case 'X':
|
|
|
|
if (lock_agent(ac, ch == 'x' ? 1 : 0) == -1)
|
|
|
|
ret = 1;
|
|
|
|
goto done;
|
|
|
|
break;
|
2002-03-18 09:55:03 +00:00
|
|
|
case 'd':
|
2000-02-24 14:29:47 +00:00
|
|
|
deleting = 1;
|
2002-03-18 09:55:03 +00:00
|
|
|
break;
|
|
|
|
case 'D':
|
|
|
|
if (delete_all(ac) == -1)
|
|
|
|
ret = 1;
|
|
|
|
goto done;
|
|
|
|
break;
|
|
|
|
case 's':
|
|
|
|
sc_reader_id = optarg;
|
|
|
|
break;
|
|
|
|
case 'e':
|
|
|
|
deleting = 1;
|
|
|
|
sc_reader_id = optarg;
|
|
|
|
break;
|
2002-06-23 14:01:54 +00:00
|
|
|
case 't':
|
|
|
|
if ((lifetime = convtime(optarg)) == -1) {
|
|
|
|
fprintf(stderr, "Invalid lifetime\n");
|
|
|
|
ret = 1;
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
break;
|
2002-03-18 09:55:03 +00:00
|
|
|
default:
|
|
|
|
usage();
|
|
|
|
ret = 1;
|
|
|
|
goto done;
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
|
|
|
}
|
2002-03-18 09:55:03 +00:00
|
|
|
argc -= optind;
|
|
|
|
argv += optind;
|
|
|
|
if (sc_reader_id != NULL) {
|
|
|
|
if (update_card(ac, !deleting, sc_reader_id) == -1)
|
|
|
|
ret = 1;
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
if (argc == 0) {
|
|
|
|
char buf[MAXPATHLEN];
|
|
|
|
struct passwd *pw;
|
2002-06-23 14:01:54 +00:00
|
|
|
struct stat st;
|
|
|
|
int count = 0;
|
2002-03-18 09:55:03 +00:00
|
|
|
|
|
|
|
if ((pw = getpwuid(getuid())) == NULL) {
|
2000-09-10 08:31:17 +00:00
|
|
|
fprintf(stderr, "No user found with uid %u\n",
|
|
|
|
(u_int)getuid());
|
2002-03-18 09:55:03 +00:00
|
|
|
ret = 1;
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
for(i = 0; default_files[i]; i++) {
|
2002-06-23 14:01:54 +00:00
|
|
|
snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir,
|
2002-03-18 09:55:03 +00:00
|
|
|
default_files[i]);
|
2002-06-23 14:01:54 +00:00
|
|
|
if (stat(buf, &st) < 0)
|
|
|
|
continue;
|
2002-03-18 09:55:03 +00:00
|
|
|
if (do_file(ac, deleting, buf) == -1)
|
|
|
|
ret = 1;
|
2002-06-23 14:01:54 +00:00
|
|
|
else
|
|
|
|
count++;
|
2002-03-18 09:55:03 +00:00
|
|
|
}
|
2002-06-23 14:01:54 +00:00
|
|
|
if (count == 0)
|
|
|
|
ret = 1;
|
2002-03-18 09:55:03 +00:00
|
|
|
} else {
|
|
|
|
for(i = 0; i < argc; i++) {
|
|
|
|
if (do_file(ac, deleting, argv[i]) == -1)
|
|
|
|
ret = 1;
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|
|
|
|
}
|
2001-05-04 03:57:05 +00:00
|
|
|
clear_pass();
|
2002-03-18 09:55:03 +00:00
|
|
|
|
|
|
|
done:
|
2000-02-24 14:29:47 +00:00
|
|
|
ssh_close_authentication_connection(ac);
|
2002-03-18 09:55:03 +00:00
|
|
|
return ret;
|
2000-02-24 14:29:47 +00:00
|
|
|
}
|