openssh/ssh-add.c

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/* $OpenBSD: ssh-add.c,v 1.166 2022/06/18 02:17:16 dtucker Exp $ */
1999-10-27 03:42:43 +00:00
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
* Adds an identity to the authentication server, or removes an identity.
- (djm) Pick up LOGIN_PROGRAM from environment or PATH if not set by headers - (djm) OpenBSD CVS updates: - deraadt@cvs.openbsd.org 2000/08/18 20:07:23 [ssh.c] accept remsh as a valid name as well; roman@buildpoint.com - deraadt@cvs.openbsd.org 2000/08/18 20:17:13 [deattack.c crc32.c packet.c] rename crc32() to ssh_crc32() to avoid zlib name clash. do not move to libz crc32 function yet, because it has ugly "long"'s in it; oneill@cs.sfu.ca - deraadt@cvs.openbsd.org 2000/08/18 20:26:08 [scp.1 scp.c] -S prog support; tv@debian.org - deraadt@cvs.openbsd.org 2000/08/18 20:50:07 [scp.c] knf - deraadt@cvs.openbsd.org 2000/08/18 20:57:33 [log-client.c] shorten - markus@cvs.openbsd.org 2000/08/19 12:48:11 [channels.c channels.h clientloop.c ssh.c ssh.h] support for ~. in ssh2 - deraadt@cvs.openbsd.org 2000/08/19 15:29:40 [crc32.h] proper prototype - markus@cvs.openbsd.org 2000/08/19 15:34:44 [authfd.c authfd.h key.c key.h ssh-add.1 ssh-add.c ssh-agent.1] [ssh-agent.c ssh-keygen.c sshconnect1.c sshconnect2.c Makefile] [fingerprint.c fingerprint.h] add SSH2/DSA support to the agent and some other DSA related cleanups. (note that we cannot talk to ssh.com's ssh2 agents) - markus@cvs.openbsd.org 2000/08/19 15:55:52 [channels.c channels.h clientloop.c] more ~ support for ssh2 - markus@cvs.openbsd.org 2000/08/19 16:21:19 [clientloop.c] oops - millert@cvs.openbsd.org 2000/08/20 12:25:53 [session.c] We have to stash the result of get_remote_name_or_ip() before we close our socket or getpeername() will get EBADF and the process will exit. Only a problem for "UseLogin yes". - millert@cvs.openbsd.org 2000/08/20 12:30:59 [session.c] Only check /etc/nologin if "UseLogin no" since login(1) may have its own policy on determining who is allowed to login when /etc/nologin is present. Also use the _PATH_NOLOGIN define. - millert@cvs.openbsd.org 2000/08/20 12:42:43 [auth1.c auth2.c session.c ssh.c] Add calls to setusercontext() and login_get*(). We basically call setusercontext() in most places where previously we did a setlogin(). Add default login.conf file and put root in the "daemon" login class. - millert@cvs.openbsd.org 2000/08/21 10:23:31 [session.c] Fix incorrect PATH setting; noted by Markus.
2000-08-23 00:46:23 +00:00
*
- (djm) Merge OpenBSD changes: - markus@cvs.openbsd.org 2000/09/05 02:59:57 [session.c] print hostname (not hushlogin) - markus@cvs.openbsd.org 2000/09/05 13:18:48 [authfile.c ssh-add.c] enable ssh-add -d for DSA keys - markus@cvs.openbsd.org 2000/09/05 13:20:49 [sftp-server.c] cleanup - markus@cvs.openbsd.org 2000/09/06 03:46:41 [authfile.h] prototype - deraadt@cvs.openbsd.org 2000/09/07 14:27:56 [ALL] cleanup copyright notices on all files. I have attempted to be accurate with the details. everything is now under Tatu's licence (which I copied from his readme), and/or the core-sdi bsd-ish thing for deattack, or various openbsd developers under a 2-term bsd licence. We're not changing any rules, just being accurate. - markus@cvs.openbsd.org 2000/09/07 14:40:30 [channels.c channels.h clientloop.c serverloop.c ssh.c] cleanup window and packet sizes for ssh2 flow control; ok niels - markus@cvs.openbsd.org 2000/09/07 14:53:00 [scp.c] typo - markus@cvs.openbsd.org 2000/09/07 15:13:37 [auth-options.c auth-options.h auth-rh-rsa.c auth-rsa.c auth.c] [authfile.h canohost.c channels.h compat.c hostfile.h log.c match.h] [pty.c readconf.c] some more Copyright fixes - markus@cvs.openbsd.org 2000/09/08 03:02:51 [README.openssh2] bye bye - deraadt@cvs.openbsd.org 2000/09/11 18:38:33 [LICENCE cipher.c] a few more comments about it being ARC4 not RC4 - markus@cvs.openbsd.org 2000/09/12 14:53:11 [log-client.c log-server.c log.c ssh.1 ssh.c ssh.h sshd.8 sshd.c] multiple debug levels - markus@cvs.openbsd.org 2000/09/14 14:25:15 [clientloop.c] typo - deraadt@cvs.openbsd.org 2000/09/15 01:13:51 [ssh-agent.c] check return value for setenv(3) for failure, and deal appropriately
2000-09-16 02:29:08 +00:00
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*
- (djm) Pick up LOGIN_PROGRAM from environment or PATH if not set by headers - (djm) OpenBSD CVS updates: - deraadt@cvs.openbsd.org 2000/08/18 20:07:23 [ssh.c] accept remsh as a valid name as well; roman@buildpoint.com - deraadt@cvs.openbsd.org 2000/08/18 20:17:13 [deattack.c crc32.c packet.c] rename crc32() to ssh_crc32() to avoid zlib name clash. do not move to libz crc32 function yet, because it has ugly "long"'s in it; oneill@cs.sfu.ca - deraadt@cvs.openbsd.org 2000/08/18 20:26:08 [scp.1 scp.c] -S prog support; tv@debian.org - deraadt@cvs.openbsd.org 2000/08/18 20:50:07 [scp.c] knf - deraadt@cvs.openbsd.org 2000/08/18 20:57:33 [log-client.c] shorten - markus@cvs.openbsd.org 2000/08/19 12:48:11 [channels.c channels.h clientloop.c ssh.c ssh.h] support for ~. in ssh2 - deraadt@cvs.openbsd.org 2000/08/19 15:29:40 [crc32.h] proper prototype - markus@cvs.openbsd.org 2000/08/19 15:34:44 [authfd.c authfd.h key.c key.h ssh-add.1 ssh-add.c ssh-agent.1] [ssh-agent.c ssh-keygen.c sshconnect1.c sshconnect2.c Makefile] [fingerprint.c fingerprint.h] add SSH2/DSA support to the agent and some other DSA related cleanups. (note that we cannot talk to ssh.com's ssh2 agents) - markus@cvs.openbsd.org 2000/08/19 15:55:52 [channels.c channels.h clientloop.c] more ~ support for ssh2 - markus@cvs.openbsd.org 2000/08/19 16:21:19 [clientloop.c] oops - millert@cvs.openbsd.org 2000/08/20 12:25:53 [session.c] We have to stash the result of get_remote_name_or_ip() before we close our socket or getpeername() will get EBADF and the process will exit. Only a problem for "UseLogin yes". - millert@cvs.openbsd.org 2000/08/20 12:30:59 [session.c] Only check /etc/nologin if "UseLogin no" since login(1) may have its own policy on determining who is allowed to login when /etc/nologin is present. Also use the _PATH_NOLOGIN define. - millert@cvs.openbsd.org 2000/08/20 12:42:43 [auth1.c auth2.c session.c ssh.c] Add calls to setusercontext() and login_get*(). We basically call setusercontext() in most places where previously we did a setlogin(). Add default login.conf file and put root in the "daemon" login class. - millert@cvs.openbsd.org 2000/08/21 10:23:31 [session.c] Fix incorrect PATH setting; noted by Markus.
2000-08-23 00:46:23 +00:00
* SSH2 implementation,
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
- (djm) Merge OpenBSD changes: - markus@cvs.openbsd.org 2000/09/05 02:59:57 [session.c] print hostname (not hushlogin) - markus@cvs.openbsd.org 2000/09/05 13:18:48 [authfile.c ssh-add.c] enable ssh-add -d for DSA keys - markus@cvs.openbsd.org 2000/09/05 13:20:49 [sftp-server.c] cleanup - markus@cvs.openbsd.org 2000/09/06 03:46:41 [authfile.h] prototype - deraadt@cvs.openbsd.org 2000/09/07 14:27:56 [ALL] cleanup copyright notices on all files. I have attempted to be accurate with the details. everything is now under Tatu's licence (which I copied from his readme), and/or the core-sdi bsd-ish thing for deattack, or various openbsd developers under a 2-term bsd licence. We're not changing any rules, just being accurate. - markus@cvs.openbsd.org 2000/09/07 14:40:30 [channels.c channels.h clientloop.c serverloop.c ssh.c] cleanup window and packet sizes for ssh2 flow control; ok niels - markus@cvs.openbsd.org 2000/09/07 14:53:00 [scp.c] typo - markus@cvs.openbsd.org 2000/09/07 15:13:37 [auth-options.c auth-options.h auth-rh-rsa.c auth-rsa.c auth.c] [authfile.h canohost.c channels.h compat.c hostfile.h log.c match.h] [pty.c readconf.c] some more Copyright fixes - markus@cvs.openbsd.org 2000/09/08 03:02:51 [README.openssh2] bye bye - deraadt@cvs.openbsd.org 2000/09/11 18:38:33 [LICENCE cipher.c] a few more comments about it being ARC4 not RC4 - markus@cvs.openbsd.org 2000/09/12 14:53:11 [log-client.c log-server.c log.c ssh.1 ssh.c ssh.h sshd.8 sshd.c] multiple debug levels - markus@cvs.openbsd.org 2000/09/14 14:25:15 [clientloop.c] typo - deraadt@cvs.openbsd.org 2000/09/15 01:13:51 [ssh-agent.c] check return value for setenv(3) for failure, and deal appropriately
2000-09-16 02:29:08 +00:00
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
1999-10-27 03:42:43 +00:00
#include "includes.h"
#include <sys/types.h>
#include <sys/stat.h>
#ifdef WITH_OPENSSL
# include <openssl/evp.h>
# include "openbsd-compat/openssl-compat.h"
#endif
1999-10-27 03:42:43 +00:00
#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
- deraadt@cvs.openbsd.org 2006/08/03 03:34:42 [OVERVIEW atomicio.c atomicio.h auth-bsdauth.c auth-chall.c auth-krb5.c] [auth-options.c auth-options.h auth-passwd.c auth-rh-rsa.c auth-rhosts.c] [auth-rsa.c auth-skey.c auth.c auth.h auth1.c auth2-chall.c auth2-gss.c] [auth2-hostbased.c auth2-kbdint.c auth2-none.c auth2-passwd.c ] [auth2-pubkey.c auth2.c authfd.c authfd.h authfile.c bufaux.c bufbn.c] [buffer.c buffer.h canohost.c channels.c channels.h cipher-3des1.c] [cipher-bf1.c cipher-ctr.c cipher.c cleanup.c clientloop.c compat.c] [compress.c deattack.c dh.c dispatch.c dns.c dns.h fatal.c groupaccess.c] [groupaccess.h gss-genr.c gss-serv-krb5.c gss-serv.c hostfile.c kex.c] [kex.h kexdh.c kexdhc.c kexdhs.c kexgex.c kexgexc.c kexgexs.c key.c] [key.h log.c log.h mac.c match.c md-sha256.c misc.c misc.h moduli.c] [monitor.c monitor_fdpass.c monitor_mm.c monitor_mm.h monitor_wrap.c] [monitor_wrap.h msg.c nchan.c packet.c progressmeter.c readconf.c] [readconf.h readpass.c rsa.c scard.c scard.h scp.c servconf.c servconf.h] [serverloop.c session.c session.h sftp-client.c sftp-common.c] [sftp-common.h sftp-glob.c sftp-server.c sftp.c ssh-add.c ssh-agent.c] [ssh-dss.c ssh-gss.h ssh-keygen.c ssh-keyscan.c ssh-keysign.c ssh-rsa.c] [ssh.c ssh.h sshconnect.c sshconnect.h sshconnect1.c sshconnect2.c] [sshd.c sshlogin.c sshlogin.h sshpty.c sshpty.h sshtty.c ttymodes.c] [uidswap.c uidswap.h uuencode.c uuencode.h xmalloc.c xmalloc.h] [loginrec.c loginrec.h openbsd-compat/port-aix.c openbsd-compat/port-tun.h] almost entirely get rid of the culture of ".h files that include .h files" ok djm, sort of ok stevesk makes the pain stop in one easy step NB. portable commit contains everything *except* removing includes.h, as that will take a fair bit more work as we move headers that are required for portability workarounds to defines.h. (also, this step wasn't "easy")
2006-08-05 02:39:39 +00:00
#include "xmalloc.h"
1999-10-27 03:42:43 +00:00
#include "ssh.h"
Hopefully things did not get mixed around too much. It compiles under Linux and works. So that is at least a good sign. =) 20010122 - (bal) OpenBSD Resync - markus@cvs.openbsd.org 2001/01/19 12:45:26 GMT 2001 by markus [servconf.c ssh.h sshd.c] only auth-chall.c needs #ifdef SKEY - markus@cvs.openbsd.org 2001/01/19 15:55:10 GMT 2001 by markus [auth-krb4.c auth-options.c auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth1.c auth2.c channels.c clientloop.c dh.c dispatch.c nchan.c packet.c pathname.h readconf.c scp.c servconf.c serverloop.c session.c ssh-add.c ssh-keygen.c ssh-keyscan.c ssh.c ssh.h ssh1.h sshconnect1.c sshd.c ttymodes.c] move ssh1 definitions to ssh1.h, pathnames to pathnames.h - markus@cvs.openbsd.org 2001/01/19 16:48:14 [sshd.8] fix typo; from stevesk@ - markus@cvs.openbsd.org 2001/01/19 16:50:58 [ssh-dss.c] clear and free digest, make consistent with other code (use dlen); from stevesk@ - markus@cvs.openbsd.org 2001/01/20 15:55:20 GMT 2001 by markus [auth-options.c auth-options.h auth-rsa.c auth2.c] pass the filename to auth_parse_options() - markus@cvs.openbsd.org 2001/01/20 17:59:40 GMT 2001 [readconf.c] fix SIGSEGV from -o ""; problem noted by jehsom@togetherweb.com - stevesk@cvs.openbsd.org 2001/01/20 18:20:29 [sshconnect2.c] dh_new_group() does not return NULL. ok markus@ - markus@cvs.openbsd.org 2001/01/20 21:33:42 [ssh-add.c] do not loop forever if askpass does not exist; from andrew@pimlott.ne.mediaone.net - djm@cvs.openbsd.org 2001/01/20 23:00:56 [servconf.c] Check for NULL return from strdelim; ok markus - djm@cvs.openbsd.org 2001/01/20 23:02:07 [readconf.c] KNF; ok markus - jakob@cvs.openbsd.org 2001/01/21 9:00:33 [ssh-keygen.1] remove -R flag; ok markus@ - markus@cvs.openbsd.org 2001/01/21 19:05:40 [atomicio.c automicio.h auth-chall.c auth-krb4.c auth-options.c auth-options.h auth-passwd.c auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth.c auth.h auth1.c auth2-chall.c auth2.c authfd.c authfile.c bufaux.c bufaux.h buffer.c canahost.c canahost.h channels.c cipher.c cli.c clientloop.c clientloop.h compat.c compress.c deattack.c dh.c dispatch.c groupaccess.c hmac.c hostfile.c kex.c key.c key.h log-client.c log-server.c log.c log.h login.c login.h match.c misc.c misc.h nchan.c packet.c pty.c radix.h readconf.c readpass.c readpass.h rsa.c scp.c servconf.c serverloop.c serverloop.h session.c sftp-server.c ssh-add.c ssh-agent.c ssh-dss.c ssh-keygen.c ssh-keyscan.c ssh-rsa.c ssh.c ssh.h sshconnect.c sshconnect.h sshconnect1.c sshconnect2.c sshd.c tildexpand.c tildexpand.h ttysmodes.c uidswap.c xmalloc.c] split ssh.h and try to cleanup the #include mess. remove unnecessary #includes. rename util.[ch] -> misc.[ch] - (bal) renamed 'PIDDIR' to '_PATH_SSH_PIDDIR' to match OpenBSD tree - (bal) Moved #ifdef KRB4 in auth-krb4.c above the #include to resolve conflict when compiling for non-kerb install - (bal) removed the #ifdef SKEY in auth1.c to match Markus' changes on 1/19.
2001-01-22 05:34:40 +00:00
#include "log.h"
#include "sshkey.h"
#include "sshbuf.h"
#include "authfd.h"
#include "authfile.h"
Hopefully things did not get mixed around too much. It compiles under Linux and works. So that is at least a good sign. =) 20010122 - (bal) OpenBSD Resync - markus@cvs.openbsd.org 2001/01/19 12:45:26 GMT 2001 by markus [servconf.c ssh.h sshd.c] only auth-chall.c needs #ifdef SKEY - markus@cvs.openbsd.org 2001/01/19 15:55:10 GMT 2001 by markus [auth-krb4.c auth-options.c auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth1.c auth2.c channels.c clientloop.c dh.c dispatch.c nchan.c packet.c pathname.h readconf.c scp.c servconf.c serverloop.c session.c ssh-add.c ssh-keygen.c ssh-keyscan.c ssh.c ssh.h ssh1.h sshconnect1.c sshd.c ttymodes.c] move ssh1 definitions to ssh1.h, pathnames to pathnames.h - markus@cvs.openbsd.org 2001/01/19 16:48:14 [sshd.8] fix typo; from stevesk@ - markus@cvs.openbsd.org 2001/01/19 16:50:58 [ssh-dss.c] clear and free digest, make consistent with other code (use dlen); from stevesk@ - markus@cvs.openbsd.org 2001/01/20 15:55:20 GMT 2001 by markus [auth-options.c auth-options.h auth-rsa.c auth2.c] pass the filename to auth_parse_options() - markus@cvs.openbsd.org 2001/01/20 17:59:40 GMT 2001 [readconf.c] fix SIGSEGV from -o ""; problem noted by jehsom@togetherweb.com - stevesk@cvs.openbsd.org 2001/01/20 18:20:29 [sshconnect2.c] dh_new_group() does not return NULL. ok markus@ - markus@cvs.openbsd.org 2001/01/20 21:33:42 [ssh-add.c] do not loop forever if askpass does not exist; from andrew@pimlott.ne.mediaone.net - djm@cvs.openbsd.org 2001/01/20 23:00:56 [servconf.c] Check for NULL return from strdelim; ok markus - djm@cvs.openbsd.org 2001/01/20 23:02:07 [readconf.c] KNF; ok markus - jakob@cvs.openbsd.org 2001/01/21 9:00:33 [ssh-keygen.1] remove -R flag; ok markus@ - markus@cvs.openbsd.org 2001/01/21 19:05:40 [atomicio.c automicio.h auth-chall.c auth-krb4.c auth-options.c auth-options.h auth-passwd.c auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth.c auth.h auth1.c auth2-chall.c auth2.c authfd.c authfile.c bufaux.c bufaux.h buffer.c canahost.c canahost.h channels.c cipher.c cli.c clientloop.c clientloop.h compat.c compress.c deattack.c dh.c dispatch.c groupaccess.c hmac.c hostfile.c kex.c key.c key.h log-client.c log-server.c log.c log.h login.c login.h match.c misc.c misc.h nchan.c packet.c pty.c radix.h readconf.c readpass.c readpass.h rsa.c scp.c servconf.c serverloop.c serverloop.h session.c sftp-server.c ssh-add.c ssh-agent.c ssh-dss.c ssh-keygen.c ssh-keyscan.c ssh-rsa.c ssh.c ssh.h sshconnect.c sshconnect.h sshconnect1.c sshconnect2.c sshd.c tildexpand.c tildexpand.h ttysmodes.c uidswap.c xmalloc.c] split ssh.h and try to cleanup the #include mess. remove unnecessary #includes. rename util.[ch] -> misc.[ch] - (bal) renamed 'PIDDIR' to '_PATH_SSH_PIDDIR' to match OpenBSD tree - (bal) Moved #ifdef KRB4 in auth-krb4.c above the #include to resolve conflict when compiling for non-kerb install - (bal) removed the #ifdef SKEY in auth1.c to match Markus' changes on 1/19.
2001-01-22 05:34:40 +00:00
#include "pathnames.h"
#include "misc.h"
#include "ssherr.h"
#include "digest.h"
#include "ssh-sk.h"
#include "sk-api.h"
#include "hostfile.h"
1999-10-27 03:42:43 +00:00
/* argv0 */
extern char *__progname;
/* Default files to add */
static char *default_files[] = {
#ifdef WITH_OPENSSL
_PATH_SSH_CLIENT_ID_RSA,
#ifdef OPENSSL_HAS_ECC
_PATH_SSH_CLIENT_ID_ECDSA,
_PATH_SSH_CLIENT_ID_ECDSA_SK,
#endif
#endif /* WITH_OPENSSL */
_PATH_SSH_CLIENT_ID_ED25519,
_PATH_SSH_CLIENT_ID_ED25519_SK,
_PATH_SSH_CLIENT_ID_XMSS,
_PATH_SSH_CLIENT_ID_DSA,
NULL
};
static int fingerprint_hash = SSH_FP_HASH_DEFAULT;
/* Default lifetime (0 == forever) */
static int lifetime = 0;
/* User has to confirm key use */
static int confirm = 0;
/* Maximum number of signatures (XMSS) */
static u_int maxsign = 0;
static u_int minleft = 0;
/* we keep a cache of one passphrase */
static char *pass = NULL;
static void
clear_pass(void)
{
if (pass) {
freezero(pass, strlen(pass));
pass = NULL;
}
}
static int
delete_one(int agent_fd, const struct sshkey *key, const char *comment,
const char *path, int qflag)
{
int r;
if ((r = ssh_remove_identity(agent_fd, key)) != 0) {
fprintf(stderr, "Could not remove identity \"%s\": %s\n",
path, ssh_err(r));
return r;
}
if (!qflag) {
fprintf(stderr, "Identity removed: %s %s (%s)\n", path,
sshkey_type(key), comment ? comment : "no comment");
}
return 0;
}
static int
delete_stdin(int agent_fd, int qflag)
{
char *line = NULL, *cp;
size_t linesize = 0;
struct sshkey *key = NULL;
int lnum = 0, r, ret = -1;
while (getline(&line, &linesize, stdin) != -1) {
lnum++;
sshkey_free(key);
key = NULL;
line[strcspn(line, "\n")] = '\0';
cp = line + strspn(line, " \t");
if (*cp == '#' || *cp == '\0')
continue;
if ((key = sshkey_new(KEY_UNSPEC)) == NULL)
fatal_f("sshkey_new");
if ((r = sshkey_read(key, &cp)) != 0) {
error_r(r, "(stdin):%d: invalid key", lnum);
continue;
}
if (delete_one(agent_fd, key, cp, "(stdin)", qflag) == 0)
ret = 0;
}
sshkey_free(key);
free(line);
return ret;
}
static int
delete_file(int agent_fd, const char *filename, int key_only, int qflag)
1999-10-27 03:42:43 +00:00
{
struct sshkey *public, *cert = NULL;
char *certpath = NULL, *comment = NULL;
int r, ret = -1;
if (strcmp(filename, "-") == 0)
return delete_stdin(agent_fd, qflag);
if ((r = sshkey_load_public(filename, &public, &comment)) != 0) {
printf("Bad key file %s: %s\n", filename, ssh_err(r));
return -1;
}
if (delete_one(agent_fd, public, comment, filename, qflag) == 0)
ret = 0;
if (key_only)
goto out;
/* Now try to delete the corresponding certificate too */
free(comment);
comment = NULL;
xasprintf(&certpath, "%s-cert.pub", filename);
if ((r = sshkey_load_public(certpath, &cert, &comment)) != 0) {
if (r != SSH_ERR_SYSTEM_ERROR || errno != ENOENT)
error_r(r, "Failed to load certificate \"%s\"", certpath);
goto out;
}
if (!sshkey_equal_public(cert, public))
fatal("Certificate %s does not match private key %s",
certpath, filename);
if (delete_one(agent_fd, cert, comment, certpath, qflag) == 0)
ret = 0;
out:
sshkey_free(cert);
sshkey_free(public);
free(certpath);
free(comment);
return ret;
1999-10-27 03:42:43 +00:00
}
- (djm) Pick up LOGIN_PROGRAM from environment or PATH if not set by headers - (djm) OpenBSD CVS updates: - deraadt@cvs.openbsd.org 2000/08/18 20:07:23 [ssh.c] accept remsh as a valid name as well; roman@buildpoint.com - deraadt@cvs.openbsd.org 2000/08/18 20:17:13 [deattack.c crc32.c packet.c] rename crc32() to ssh_crc32() to avoid zlib name clash. do not move to libz crc32 function yet, because it has ugly "long"'s in it; oneill@cs.sfu.ca - deraadt@cvs.openbsd.org 2000/08/18 20:26:08 [scp.1 scp.c] -S prog support; tv@debian.org - deraadt@cvs.openbsd.org 2000/08/18 20:50:07 [scp.c] knf - deraadt@cvs.openbsd.org 2000/08/18 20:57:33 [log-client.c] shorten - markus@cvs.openbsd.org 2000/08/19 12:48:11 [channels.c channels.h clientloop.c ssh.c ssh.h] support for ~. in ssh2 - deraadt@cvs.openbsd.org 2000/08/19 15:29:40 [crc32.h] proper prototype - markus@cvs.openbsd.org 2000/08/19 15:34:44 [authfd.c authfd.h key.c key.h ssh-add.1 ssh-add.c ssh-agent.1] [ssh-agent.c ssh-keygen.c sshconnect1.c sshconnect2.c Makefile] [fingerprint.c fingerprint.h] add SSH2/DSA support to the agent and some other DSA related cleanups. (note that we cannot talk to ssh.com's ssh2 agents) - markus@cvs.openbsd.org 2000/08/19 15:55:52 [channels.c channels.h clientloop.c] more ~ support for ssh2 - markus@cvs.openbsd.org 2000/08/19 16:21:19 [clientloop.c] oops - millert@cvs.openbsd.org 2000/08/20 12:25:53 [session.c] We have to stash the result of get_remote_name_or_ip() before we close our socket or getpeername() will get EBADF and the process will exit. Only a problem for "UseLogin yes". - millert@cvs.openbsd.org 2000/08/20 12:30:59 [session.c] Only check /etc/nologin if "UseLogin no" since login(1) may have its own policy on determining who is allowed to login when /etc/nologin is present. Also use the _PATH_NOLOGIN define. - millert@cvs.openbsd.org 2000/08/20 12:42:43 [auth1.c auth2.c session.c ssh.c] Add calls to setusercontext() and login_get*(). We basically call setusercontext() in most places where previously we did a setlogin(). Add default login.conf file and put root in the "daemon" login class. - millert@cvs.openbsd.org 2000/08/21 10:23:31 [session.c] Fix incorrect PATH setting; noted by Markus.
2000-08-23 00:46:23 +00:00
/* Send a request to remove all identities. */
static int
delete_all(int agent_fd, int qflag)
1999-10-27 03:42:43 +00:00
{
int ret = -1;
- (djm) Pick up LOGIN_PROGRAM from environment or PATH if not set by headers - (djm) OpenBSD CVS updates: - deraadt@cvs.openbsd.org 2000/08/18 20:07:23 [ssh.c] accept remsh as a valid name as well; roman@buildpoint.com - deraadt@cvs.openbsd.org 2000/08/18 20:17:13 [deattack.c crc32.c packet.c] rename crc32() to ssh_crc32() to avoid zlib name clash. do not move to libz crc32 function yet, because it has ugly "long"'s in it; oneill@cs.sfu.ca - deraadt@cvs.openbsd.org 2000/08/18 20:26:08 [scp.1 scp.c] -S prog support; tv@debian.org - deraadt@cvs.openbsd.org 2000/08/18 20:50:07 [scp.c] knf - deraadt@cvs.openbsd.org 2000/08/18 20:57:33 [log-client.c] shorten - markus@cvs.openbsd.org 2000/08/19 12:48:11 [channels.c channels.h clientloop.c ssh.c ssh.h] support for ~. in ssh2 - deraadt@cvs.openbsd.org 2000/08/19 15:29:40 [crc32.h] proper prototype - markus@cvs.openbsd.org 2000/08/19 15:34:44 [authfd.c authfd.h key.c key.h ssh-add.1 ssh-add.c ssh-agent.1] [ssh-agent.c ssh-keygen.c sshconnect1.c sshconnect2.c Makefile] [fingerprint.c fingerprint.h] add SSH2/DSA support to the agent and some other DSA related cleanups. (note that we cannot talk to ssh.com's ssh2 agents) - markus@cvs.openbsd.org 2000/08/19 15:55:52 [channels.c channels.h clientloop.c] more ~ support for ssh2 - markus@cvs.openbsd.org 2000/08/19 16:21:19 [clientloop.c] oops - millert@cvs.openbsd.org 2000/08/20 12:25:53 [session.c] We have to stash the result of get_remote_name_or_ip() before we close our socket or getpeername() will get EBADF and the process will exit. Only a problem for "UseLogin yes". - millert@cvs.openbsd.org 2000/08/20 12:30:59 [session.c] Only check /etc/nologin if "UseLogin no" since login(1) may have its own policy on determining who is allowed to login when /etc/nologin is present. Also use the _PATH_NOLOGIN define. - millert@cvs.openbsd.org 2000/08/20 12:42:43 [auth1.c auth2.c session.c ssh.c] Add calls to setusercontext() and login_get*(). We basically call setusercontext() in most places where previously we did a setlogin(). Add default login.conf file and put root in the "daemon" login class. - millert@cvs.openbsd.org 2000/08/21 10:23:31 [session.c] Fix incorrect PATH setting; noted by Markus.
2000-08-23 00:46:23 +00:00
/*
* Since the agent might be forwarded, old or non-OpenSSH, when asked
* to remove all keys, attempt to remove both protocol v.1 and v.2
* keys.
*/
if (ssh_remove_all_identities(agent_fd, 2) == 0)
ret = 0;
/* ignore error-code for ssh1 */
ssh_remove_all_identities(agent_fd, 1);
- (djm) Pick up LOGIN_PROGRAM from environment or PATH if not set by headers - (djm) OpenBSD CVS updates: - deraadt@cvs.openbsd.org 2000/08/18 20:07:23 [ssh.c] accept remsh as a valid name as well; roman@buildpoint.com - deraadt@cvs.openbsd.org 2000/08/18 20:17:13 [deattack.c crc32.c packet.c] rename crc32() to ssh_crc32() to avoid zlib name clash. do not move to libz crc32 function yet, because it has ugly "long"'s in it; oneill@cs.sfu.ca - deraadt@cvs.openbsd.org 2000/08/18 20:26:08 [scp.1 scp.c] -S prog support; tv@debian.org - deraadt@cvs.openbsd.org 2000/08/18 20:50:07 [scp.c] knf - deraadt@cvs.openbsd.org 2000/08/18 20:57:33 [log-client.c] shorten - markus@cvs.openbsd.org 2000/08/19 12:48:11 [channels.c channels.h clientloop.c ssh.c ssh.h] support for ~. in ssh2 - deraadt@cvs.openbsd.org 2000/08/19 15:29:40 [crc32.h] proper prototype - markus@cvs.openbsd.org 2000/08/19 15:34:44 [authfd.c authfd.h key.c key.h ssh-add.1 ssh-add.c ssh-agent.1] [ssh-agent.c ssh-keygen.c sshconnect1.c sshconnect2.c Makefile] [fingerprint.c fingerprint.h] add SSH2/DSA support to the agent and some other DSA related cleanups. (note that we cannot talk to ssh.com's ssh2 agents) - markus@cvs.openbsd.org 2000/08/19 15:55:52 [channels.c channels.h clientloop.c] more ~ support for ssh2 - markus@cvs.openbsd.org 2000/08/19 16:21:19 [clientloop.c] oops - millert@cvs.openbsd.org 2000/08/20 12:25:53 [session.c] We have to stash the result of get_remote_name_or_ip() before we close our socket or getpeername() will get EBADF and the process will exit. Only a problem for "UseLogin yes". - millert@cvs.openbsd.org 2000/08/20 12:30:59 [session.c] Only check /etc/nologin if "UseLogin no" since login(1) may have its own policy on determining who is allowed to login when /etc/nologin is present. Also use the _PATH_NOLOGIN define. - millert@cvs.openbsd.org 2000/08/20 12:42:43 [auth1.c auth2.c session.c ssh.c] Add calls to setusercontext() and login_get*(). We basically call setusercontext() in most places where previously we did a setlogin(). Add default login.conf file and put root in the "daemon" login class. - millert@cvs.openbsd.org 2000/08/21 10:23:31 [session.c] Fix incorrect PATH setting; noted by Markus.
2000-08-23 00:46:23 +00:00
if (ret != 0)
NOTE: This update changes the RSA key generation. *NEW RSA KEYS NEED TO BE GENERATED* =) Refer to to entry "2001/01/16 19:20:06" for more details. 20010118 - (bal) Super Sized OpenBSD Resync - markus@cvs.openbsd.org 2001/01/11 22:14:20 GMT 2001 by markus [sshd.c] maxfd+1 - markus@cvs.openbsd.org 2001/01/13 17:59:18 [ssh-keygen.1] small ssh-keygen manpage cleanup; stevesk@pobox.com - markus@cvs.openbsd.org 2001/01/13 18:03:07 [scp.c ssh-keygen.c sshd.c] getopt() returns -1 not EOF; stevesk@pobox.com - markus@cvs.openbsd.org 2001/01/13 18:06:54 [ssh-keyscan.c] use SSH_DEFAULT_PORT; from stevesk@pobox.com - markus@cvs.openbsd.org 2001/01/13 18:12:47 [ssh-keyscan.c] free() -> xfree(); fix memory leak; from stevesk@pobox.com - markus@cvs.openbsd.org 2001/01/13 18:14:13 [ssh-add.c] typo, from stevesk@sweden.hp.com - markus@cvs.openbsd.org 2001/01/13 18:32:50 [packet.c session.c ssh.c sshconnect.c sshd.c] split out keepalive from packet_interactive (from dale@accentre.com) set IPTOS_LOWDELAY TCP_NODELAY IPTOS_THROUGHPUT for ssh2, too. - markus@cvs.openbsd.org 2001/01/13 18:36:45 [packet.c packet.h] reorder, typo - markus@cvs.openbsd.org 2001/01/13 18:38:00 [auth-options.c] fix comment - markus@cvs.openbsd.org 2001/01/13 18:43:31 [session.c] Wall - markus@cvs.openbsd.org 2001/01/13 19:14:08 [clientloop.h clientloop.c ssh.c] move callback to headerfile - markus@cvs.openbsd.org 2001/01/15 21:40:10 [ssh.c] use log() instead of stderr - markus@cvs.openbsd.org 2001/01/15 21:43:51 [dh.c] use error() not stderr! - markus@cvs.openbsd.org 2001/01/15 21:45:29 [sftp-server.c] rename must fail if newpath exists, debug off by default - markus@cvs.openbsd.org 2001/01/15 21:46:38 [sftp-server.c] readable long listing for sftp-server, ok deraadt@ - markus@cvs.openbsd.org 2001/01/16 19:20:06 [key.c ssh-rsa.c] make "ssh-rsa" key format for ssh2 confirm to the ietf-drafts; from galb@vandyke.com. note that you have to delete older ssh2-rsa keys, since they are in the wrong format, too. they must be removed from .ssh/authorized_keys2 and .ssh/known_hosts2, etc. (cd; grep -v ssh-rsa .ssh/authorized_keys2 > TMP && mv TMP .ssh/authorized_keys2) additionally, we now check that BN_num_bits(rsa->n) >= 768. - markus@cvs.openbsd.org 2001/01/16 20:54:27 [sftp-server.c] remove some statics. simpler handles; idea from nisse@lysator.liu.se - deraadt@cvs.openbsd.org 2001/01/16 23:58:08 [bufaux.c radix.c sshconnect.h sshconnect1.c] indent - (bal) Added bsd-strmode.[ch] since some non-OpenBSD platforms may be missing such feature.
2001-01-18 02:04:35 +00:00
fprintf(stderr, "Failed to remove all identities.\n");
else if (!qflag)
fprintf(stderr, "All identities removed.\n");
return ret;
1999-10-27 03:42:43 +00:00
}
static int
add_file(int agent_fd, const char *filename, int key_only, int qflag,
const char *skprovider, struct dest_constraint **dest_constraints,
size_t ndest_constraints)
1999-10-27 03:42:43 +00:00
{
struct sshkey *private, *cert;
char *comment = NULL;
char msg[1024], *certpath = NULL;
int r, fd, ret = -1;
size_t i;
u_int32_t left;
struct sshbuf *keyblob;
struct ssh_identitylist *idlist;
if (strcmp(filename, "-") == 0) {
fd = STDIN_FILENO;
filename = "(stdin)";
} else if ((fd = open(filename, O_RDONLY)) == -1) {
- (djm) Pick up LOGIN_PROGRAM from environment or PATH if not set by headers - (djm) OpenBSD CVS updates: - deraadt@cvs.openbsd.org 2000/08/18 20:07:23 [ssh.c] accept remsh as a valid name as well; roman@buildpoint.com - deraadt@cvs.openbsd.org 2000/08/18 20:17:13 [deattack.c crc32.c packet.c] rename crc32() to ssh_crc32() to avoid zlib name clash. do not move to libz crc32 function yet, because it has ugly "long"'s in it; oneill@cs.sfu.ca - deraadt@cvs.openbsd.org 2000/08/18 20:26:08 [scp.1 scp.c] -S prog support; tv@debian.org - deraadt@cvs.openbsd.org 2000/08/18 20:50:07 [scp.c] knf - deraadt@cvs.openbsd.org 2000/08/18 20:57:33 [log-client.c] shorten - markus@cvs.openbsd.org 2000/08/19 12:48:11 [channels.c channels.h clientloop.c ssh.c ssh.h] support for ~. in ssh2 - deraadt@cvs.openbsd.org 2000/08/19 15:29:40 [crc32.h] proper prototype - markus@cvs.openbsd.org 2000/08/19 15:34:44 [authfd.c authfd.h key.c key.h ssh-add.1 ssh-add.c ssh-agent.1] [ssh-agent.c ssh-keygen.c sshconnect1.c sshconnect2.c Makefile] [fingerprint.c fingerprint.h] add SSH2/DSA support to the agent and some other DSA related cleanups. (note that we cannot talk to ssh.com's ssh2 agents) - markus@cvs.openbsd.org 2000/08/19 15:55:52 [channels.c channels.h clientloop.c] more ~ support for ssh2 - markus@cvs.openbsd.org 2000/08/19 16:21:19 [clientloop.c] oops - millert@cvs.openbsd.org 2000/08/20 12:25:53 [session.c] We have to stash the result of get_remote_name_or_ip() before we close our socket or getpeername() will get EBADF and the process will exit. Only a problem for "UseLogin yes". - millert@cvs.openbsd.org 2000/08/20 12:30:59 [session.c] Only check /etc/nologin if "UseLogin no" since login(1) may have its own policy on determining who is allowed to login when /etc/nologin is present. Also use the _PATH_NOLOGIN define. - millert@cvs.openbsd.org 2000/08/20 12:42:43 [auth1.c auth2.c session.c ssh.c] Add calls to setusercontext() and login_get*(). We basically call setusercontext() in most places where previously we did a setlogin(). Add default login.conf file and put root in the "daemon" login class. - millert@cvs.openbsd.org 2000/08/21 10:23:31 [session.c] Fix incorrect PATH setting; noted by Markus.
2000-08-23 00:46:23 +00:00
perror(filename);
return -1;
- (djm) Pick up LOGIN_PROGRAM from environment or PATH if not set by headers - (djm) OpenBSD CVS updates: - deraadt@cvs.openbsd.org 2000/08/18 20:07:23 [ssh.c] accept remsh as a valid name as well; roman@buildpoint.com - deraadt@cvs.openbsd.org 2000/08/18 20:17:13 [deattack.c crc32.c packet.c] rename crc32() to ssh_crc32() to avoid zlib name clash. do not move to libz crc32 function yet, because it has ugly "long"'s in it; oneill@cs.sfu.ca - deraadt@cvs.openbsd.org 2000/08/18 20:26:08 [scp.1 scp.c] -S prog support; tv@debian.org - deraadt@cvs.openbsd.org 2000/08/18 20:50:07 [scp.c] knf - deraadt@cvs.openbsd.org 2000/08/18 20:57:33 [log-client.c] shorten - markus@cvs.openbsd.org 2000/08/19 12:48:11 [channels.c channels.h clientloop.c ssh.c ssh.h] support for ~. in ssh2 - deraadt@cvs.openbsd.org 2000/08/19 15:29:40 [crc32.h] proper prototype - markus@cvs.openbsd.org 2000/08/19 15:34:44 [authfd.c authfd.h key.c key.h ssh-add.1 ssh-add.c ssh-agent.1] [ssh-agent.c ssh-keygen.c sshconnect1.c sshconnect2.c Makefile] [fingerprint.c fingerprint.h] add SSH2/DSA support to the agent and some other DSA related cleanups. (note that we cannot talk to ssh.com's ssh2 agents) - markus@cvs.openbsd.org 2000/08/19 15:55:52 [channels.c channels.h clientloop.c] more ~ support for ssh2 - markus@cvs.openbsd.org 2000/08/19 16:21:19 [clientloop.c] oops - millert@cvs.openbsd.org 2000/08/20 12:25:53 [session.c] We have to stash the result of get_remote_name_or_ip() before we close our socket or getpeername() will get EBADF and the process will exit. Only a problem for "UseLogin yes". - millert@cvs.openbsd.org 2000/08/20 12:30:59 [session.c] Only check /etc/nologin if "UseLogin no" since login(1) may have its own policy on determining who is allowed to login when /etc/nologin is present. Also use the _PATH_NOLOGIN define. - millert@cvs.openbsd.org 2000/08/20 12:42:43 [auth1.c auth2.c session.c ssh.c] Add calls to setusercontext() and login_get*(). We basically call setusercontext() in most places where previously we did a setlogin(). Add default login.conf file and put root in the "daemon" login class. - millert@cvs.openbsd.org 2000/08/21 10:23:31 [session.c] Fix incorrect PATH setting; noted by Markus.
2000-08-23 00:46:23 +00:00
}
/*
* Since we'll try to load a keyfile multiple times, permission errors
* will occur multiple times, so check perms first and bail if wrong.
*/
if (fd != STDIN_FILENO) {
if (sshkey_perm_ok(fd, filename) != 0) {
close(fd);
return -1;
}
}
if ((r = sshbuf_load_fd(fd, &keyblob)) != 0) {
fprintf(stderr, "Error loading key \"%s\": %s\n",
filename, ssh_err(r));
sshbuf_free(keyblob);
close(fd);
return -1;
}
close(fd);
/* At first, try empty passphrase */
if ((r = sshkey_parse_private_fileblob(keyblob, "", &private,
&comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE) {
fprintf(stderr, "Error loading key \"%s\": %s\n",
filename, ssh_err(r));
goto fail_load;
}
/* try last */
if (private == NULL && pass != NULL) {
if ((r = sshkey_parse_private_fileblob(keyblob, pass, &private,
&comment)) != 0 && r != SSH_ERR_KEY_WRONG_PASSPHRASE) {
fprintf(stderr, "Error loading key \"%s\": %s\n",
filename, ssh_err(r));
goto fail_load;
}
}
if (private == NULL) {
/* clear passphrase since it did not work */
clear_pass();
snprintf(msg, sizeof msg, "Enter passphrase for %s%s: ",
filename, confirm ? " (will confirm each use)" : "");
for (;;) {
pass = read_passphrase(msg, RP_ALLOW_STDIN);
if (strcmp(pass, "") == 0)
goto fail_load;
if ((r = sshkey_parse_private_fileblob(keyblob, pass,
&private, &comment)) == 0)
break;
else if (r != SSH_ERR_KEY_WRONG_PASSPHRASE) {
fprintf(stderr,
"Error loading key \"%s\": %s\n",
filename, ssh_err(r));
fail_load:
clear_pass();
sshbuf_free(keyblob);
return -1;
}
clear_pass();
snprintf(msg, sizeof msg,
"Bad passphrase, try again for %s%s: ", filename,
confirm ? " (will confirm each use)" : "");
}
}
if (comment == NULL || *comment == '\0')
comment = xstrdup(filename);
sshbuf_free(keyblob);
/* For XMSS */
if ((r = sshkey_set_filename(private, filename)) != 0) {
fprintf(stderr, "Could not add filename to private key: %s (%s)\n",
filename, comment);
goto out;
}
if (maxsign && minleft &&
(r = ssh_fetch_identitylist(agent_fd, &idlist)) == 0) {
for (i = 0; i < idlist->nkeys; i++) {
if (!sshkey_equal_public(idlist->keys[i], private))
continue;
left = sshkey_signatures_left(idlist->keys[i]);
if (left < minleft) {
fprintf(stderr,
"Only %d signatures left.\n", left);
break;
}
fprintf(stderr, "Skipping update: ");
if (left == minleft) {
fprintf(stderr,
"required signatures left (%d).\n", left);
} else {
fprintf(stderr,
"more signatures left (%d) than"
" required (%d).\n", left, minleft);
}
ssh_free_identitylist(idlist);
goto out;
}
ssh_free_identitylist(idlist);
}
if (sshkey_is_sk(private)) {
if (skprovider == NULL) {
fprintf(stderr, "Cannot load FIDO key %s "
"without provider\n", filename);
goto out;
}
} else {
/* Don't send provider constraint for other keys */
skprovider = NULL;
}
if ((r = ssh_add_identity_constrained(agent_fd, private, comment,
lifetime, confirm, maxsign, skprovider,
dest_constraints, ndest_constraints)) == 0) {
ret = 0;
if (!qflag) {
fprintf(stderr, "Identity added: %s (%s)\n",
filename, comment);
if (lifetime != 0) {
fprintf(stderr,
"Lifetime set to %d seconds\n", lifetime);
}
if (confirm != 0) {
fprintf(stderr, "The user must confirm "
"each use of the key\n");
}
}
} else {
fprintf(stderr, "Could not add identity \"%s\": %s\n",
filename, ssh_err(r));
}
/* Skip trying to load the cert if requested */
if (key_only)
goto out;
/* Now try to add the certificate flavour too */
xasprintf(&certpath, "%s-cert.pub", filename);
if ((r = sshkey_load_public(certpath, &cert, NULL)) != 0) {
if (r != SSH_ERR_SYSTEM_ERROR || errno != ENOENT)
error_r(r, "Failed to load certificate \"%s\"", certpath);
goto out;
}
if (!sshkey_equal_public(cert, private)) {
error("Certificate %s does not match private key %s",
certpath, filename);
sshkey_free(cert);
goto out;
}
/* Graft with private bits */
if ((r = sshkey_to_certified(private)) != 0) {
error_fr(r, "sshkey_to_certified");
sshkey_free(cert);
goto out;
}
if ((r = sshkey_cert_copy(cert, private)) != 0) {
error_fr(r, "sshkey_cert_copy");
sshkey_free(cert);
goto out;
}
sshkey_free(cert);
if ((r = ssh_add_identity_constrained(agent_fd, private, comment,
lifetime, confirm, maxsign, skprovider,
dest_constraints, ndest_constraints)) != 0) {
error_r(r, "Certificate %s (%s) add failed", certpath,
private->cert->key_id);
goto out;
}
/* success */
if (!qflag) {
fprintf(stderr, "Certificate added: %s (%s)\n", certpath,
private->cert->key_id);
if (lifetime != 0) {
fprintf(stderr, "Lifetime set to %d seconds\n",
lifetime);
}
if (confirm != 0) {
fprintf(stderr, "The user must confirm each use "
"of the key\n");
}
}
out:
free(certpath);
free(comment);
sshkey_free(private);
return ret;
1999-10-27 03:42:43 +00:00
}
static int
update_card(int agent_fd, int add, const char *id, int qflag,
struct dest_constraint **dest_constraints, size_t ndest_constraints)
{
char *pin = NULL;
int r, ret = -1;
if (add) {
if ((pin = read_passphrase("Enter passphrase for PKCS#11: ",
RP_ALLOW_STDIN)) == NULL)
return -1;
}
if ((r = ssh_update_card(agent_fd, add, id, pin == NULL ? "" : pin,
lifetime, confirm, dest_constraints, ndest_constraints)) == 0) {
ret = 0;
if (!qflag) {
fprintf(stderr, "Card %s: %s\n",
add ? "added" : "removed", id);
}
} else {
fprintf(stderr, "Could not %s card \"%s\": %s\n",
add ? "add" : "remove", id, ssh_err(r));
ret = -1;
}
free(pin);
return ret;
}
static int
test_key(int agent_fd, const char *filename)
{
struct sshkey *key = NULL;
u_char *sig = NULL;
size_t slen = 0;
int r, ret = -1;
char data[1024];
if ((r = sshkey_load_public(filename, &key, NULL)) != 0) {
error_r(r, "Couldn't read public key %s", filename);
return -1;
}
arc4random_buf(data, sizeof(data));
if ((r = ssh_agent_sign(agent_fd, key, &sig, &slen, data, sizeof(data),
NULL, 0)) != 0) {
error_r(r, "Agent signature failed for %s", filename);
goto done;
}
if ((r = sshkey_verify(key, sig, slen, data, sizeof(data),
NULL, 0, NULL)) != 0) {
error_r(r, "Signature verification failed for %s", filename);
goto done;
}
/* success */
ret = 0;
done:
free(sig);
sshkey_free(key);
return ret;
}
static int
list_identities(int agent_fd, int do_fp)
1999-10-27 03:42:43 +00:00
{
char *fp;
int r;
struct ssh_identitylist *idlist;
u_int32_t left;
size_t i;
if ((r = ssh_fetch_identitylist(agent_fd, &idlist)) != 0) {
if (r != SSH_ERR_AGENT_NO_IDENTITIES)
fprintf(stderr, "error fetching identities: %s\n",
ssh_err(r));
else
printf("The agent has no identities.\n");
return -1;
}
for (i = 0; i < idlist->nkeys; i++) {
if (do_fp) {
fp = sshkey_fingerprint(idlist->keys[i],
fingerprint_hash, SSH_FP_DEFAULT);
printf("%u %s %s (%s)\n", sshkey_size(idlist->keys[i]),
fp == NULL ? "(null)" : fp, idlist->comments[i],
sshkey_type(idlist->keys[i]));
free(fp);
} else {
if ((r = sshkey_write(idlist->keys[i], stdout)) != 0) {
fprintf(stderr, "sshkey_write: %s\n",
ssh_err(r));
continue;
}
fprintf(stdout, " %s", idlist->comments[i]);
left = sshkey_signatures_left(idlist->keys[i]);
if (left > 0)
fprintf(stdout,
" [signatures left %d]", left);
fprintf(stdout, "\n");
}
}
ssh_free_identitylist(idlist);
return 0;
1999-10-27 03:42:43 +00:00
}
static int
lock_agent(int agent_fd, int lock)
{
char prompt[100], *p1, *p2;
int r, passok = 1, ret = -1;
strlcpy(prompt, "Enter lock password: ", sizeof(prompt));
p1 = read_passphrase(prompt, RP_ALLOW_STDIN);
if (lock) {
strlcpy(prompt, "Again: ", sizeof prompt);
p2 = read_passphrase(prompt, RP_ALLOW_STDIN);
if (strcmp(p1, p2) != 0) {
fprintf(stderr, "Passwords do not match.\n");
passok = 0;
}
freezero(p2, strlen(p2));
}
if (passok) {
if ((r = ssh_lock_agent(agent_fd, lock, p1)) == 0) {
fprintf(stderr, "Agent %slocked.\n", lock ? "" : "un");
ret = 0;
} else {
fprintf(stderr, "Failed to %slock agent: %s\n",
lock ? "" : "un", ssh_err(r));
}
}
freezero(p1, strlen(p1));
return (ret);
}
static int
load_resident_keys(int agent_fd, const char *skprovider, int qflag,
struct dest_constraint **dest_constraints, size_t ndest_constraints)
{
struct sshsk_resident_key **srks;
size_t nsrks, i;
struct sshkey *key;
int r, ok = 0;
char *fp;
pass = read_passphrase("Enter PIN for authenticator: ", RP_ALLOW_STDIN);
if ((r = sshsk_load_resident(skprovider, NULL, pass, 0,
&srks, &nsrks)) != 0) {
error_r(r, "Unable to load resident keys");
return r;
}
for (i = 0; i < nsrks; i++) {
key = srks[i]->key;
if ((fp = sshkey_fingerprint(key,
fingerprint_hash, SSH_FP_DEFAULT)) == NULL)
fatal_f("sshkey_fingerprint failed");
if ((r = ssh_add_identity_constrained(agent_fd, key, "",
lifetime, confirm, maxsign, skprovider,
dest_constraints, ndest_constraints)) != 0) {
error("Unable to add key %s %s",
sshkey_type(key), fp);
free(fp);
ok = r;
continue;
}
if (ok == 0)
ok = 1;
if (!qflag) {
fprintf(stderr, "Resident identity added: %s %s\n",
sshkey_type(key), fp);
if (lifetime != 0) {
fprintf(stderr,
"Lifetime set to %d seconds\n", lifetime);
}
if (confirm != 0) {
fprintf(stderr, "The user must confirm "
"each use of the key\n");
}
}
free(fp);
}
sshsk_free_resident_keys(srks, nsrks);
if (nsrks == 0)
return SSH_ERR_KEY_NOT_FOUND;
return ok == 1 ? 0 : ok;
}
static int
do_file(int agent_fd, int deleting, int key_only, char *file, int qflag,
const char *skprovider, struct dest_constraint **dest_constraints,
size_t ndest_constraints)
{
if (deleting) {
if (delete_file(agent_fd, file, key_only, qflag) == -1)
return -1;
} else {
if (add_file(agent_fd, file, key_only, qflag, skprovider,
dest_constraints, ndest_constraints) == -1)
return -1;
}
return 0;
}
/* Append string 's' to a NULL-terminated array of strings */
static void
stringlist_append(char ***listp, const char *s)
{
size_t i = 0;
if (*listp == NULL)
*listp = xcalloc(2, sizeof(**listp));
else {
for (i = 0; (*listp)[i] != NULL; i++)
; /* count */
*listp = xrecallocarray(*listp, i + 1, i + 2, sizeof(**listp));
}
(*listp)[i] = xstrdup(s);
}
static void
parse_dest_constraint_hop(const char *s, struct dest_constraint_hop *dch,
char **hostkey_files)
{
char *user = NULL, *host, *os, *path;
size_t i;
struct hostkeys *hostkeys;
const struct hostkey_entry *hke;
int r, want_ca;
memset(dch, '\0', sizeof(*dch));
os = xstrdup(s);
if ((host = strchr(os, '@')) == NULL)
host = os;
else {
*host++ = '\0';
user = os;
}
cleanhostname(host);
/* Trivial case: username@ (all hosts) */
if (*host == '\0') {
if (user == NULL) {
fatal("Invalid key destination constraint \"%s\": "
"does not specify user or host", s);
}
dch->user = xstrdup(user);
/* other fields left blank */
free(os);
return;
}
if (hostkey_files == NULL)
fatal_f("no hostkey files");
/* Otherwise we need to look up the keys for this hostname */
hostkeys = init_hostkeys();
for (i = 0; hostkey_files[i]; i++) {
path = tilde_expand_filename(hostkey_files[i], getuid());
debug2_f("looking up host keys for \"%s\" in %s", host, path);
load_hostkeys(hostkeys, host, path, 0);
free(path);
}
dch->user = user == NULL ? NULL : xstrdup(user);
dch->hostname = xstrdup(host);
for (i = 0; i < hostkeys->num_entries; i++) {
hke = hostkeys->entries + i;
want_ca = hke->marker == MRK_CA;
if (hke->marker != MRK_NONE && !want_ca)
continue;
debug3_f("%s%s%s: adding %s %skey from %s:%lu as key %u",
user == NULL ? "": user, user == NULL ? "" : "@",
host, sshkey_type(hke->key), want_ca ? "CA " : "",
hke->file, hke->line, dch->nkeys);
dch->keys = xrecallocarray(dch->keys, dch->nkeys,
dch->nkeys + 1, sizeof(*dch->keys));
dch->key_is_ca = xrecallocarray(dch->key_is_ca, dch->nkeys,
dch->nkeys + 1, sizeof(*dch->key_is_ca));
if ((r = sshkey_from_private(hke->key,
&(dch->keys[dch->nkeys]))) != 0)
fatal_fr(r, "sshkey_from_private");
dch->key_is_ca[dch->nkeys] = want_ca;
dch->nkeys++;
}
if (dch->nkeys == 0)
fatal("No host keys found for destination \"%s\"", host);
free_hostkeys(hostkeys);
free(os);
return;
}
static void
parse_dest_constraint(const char *s, struct dest_constraint ***dcp,
size_t *ndcp, char **hostkey_files)
{
struct dest_constraint *dc;
char *os, *cp;
dc = xcalloc(1, sizeof(*dc));
os = xstrdup(s);
if ((cp = strchr(os, '>')) == NULL) {
/* initial hop; no 'from' hop specified */
parse_dest_constraint_hop(os, &dc->to, hostkey_files);
} else {
/* two hops specified */
*(cp++) = '\0';
parse_dest_constraint_hop(os, &dc->from, hostkey_files);
parse_dest_constraint_hop(cp, &dc->to, hostkey_files);
if (dc->from.user != NULL) {
fatal("Invalid key constraint %s: cannot specify "
"user on 'from' host", os);
}
}
/* XXX eliminate or error on duplicates */
debug2_f("constraint %zu: %s%s%s (%u keys) > %s%s%s (%u keys)", *ndcp,
dc->from.user ? dc->from.user : "", dc->from.user ? "@" : "",
dc->from.hostname ? dc->from.hostname : "(ORIGIN)", dc->from.nkeys,
dc->to.user ? dc->to.user : "", dc->to.user ? "@" : "",
dc->to.hostname ? dc->to.hostname : "(ANY)", dc->to.nkeys);
*dcp = xrecallocarray(*dcp, *ndcp, *ndcp + 1, sizeof(**dcp));
(*dcp)[(*ndcp)++] = dc;
free(os);
}
static void
usage(void)
{
fprintf(stderr,
"usage: ssh-add [-cDdKkLlqvXx] [-E fingerprint_hash] [-H hostkey_file]\n"
" [-h destination_constraint] [-S provider] [-t life]\n"
#ifdef WITH_XMSS
" [-M maxsign] [-m minleft]\n"
#endif
" [file ...]\n"
" ssh-add -s pkcs11\n"
" ssh-add -e pkcs11\n"
" ssh-add -T pubkey ...\n"
);
}
1999-10-27 03:42:43 +00:00
int
1999-10-28 05:23:30 +00:00
main(int argc, char **argv)
1999-10-27 03:42:43 +00:00
{
extern char *optarg;
extern int optind;
int agent_fd;
char *pkcs11provider = NULL, *skprovider = NULL;
char **dest_constraint_strings = NULL, **hostkey_files = NULL;
int r, i, ch, deleting = 0, ret = 0, key_only = 0, do_download = 0;
int xflag = 0, lflag = 0, Dflag = 0, qflag = 0, Tflag = 0;
SyslogFacility log_facility = SYSLOG_FACILITY_AUTH;
LogLevel log_level = SYSLOG_LEVEL_INFO;
struct dest_constraint **dest_constraints = NULL;
size_t ndest_constraints = 0;
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
sanitise_stdfd();
__progname = ssh_get_progname(argv[0]);
2001-05-06 02:57:20 +00:00
seed_rng();
log_init(__progname, log_level, log_facility, 1);
setvbuf(stdout, NULL, _IOLBF, 0);
/* First, get a connection to the authentication agent. */
switch (r = ssh_get_authentication_socket(&agent_fd)) {
case 0:
break;
case SSH_ERR_AGENT_NOT_PRESENT:
fprintf(stderr, "Could not open a connection to your "
"authentication agent.\n");
exit(2);
default:
fprintf(stderr, "Error connecting to agent: %s\n", ssh_err(r));
exit(2);
1999-10-27 03:42:43 +00:00
}
skprovider = getenv("SSH_SK_PROVIDER");
while ((ch = getopt(argc, argv, "vkKlLcdDTxXE:e:h:H:M:m:qs:S:t:")) != -1) {
switch (ch) {
case 'v':
if (log_level == SYSLOG_LEVEL_INFO)
log_level = SYSLOG_LEVEL_DEBUG1;
else if (log_level < SYSLOG_LEVEL_DEBUG3)
log_level++;
break;
case 'E':
fingerprint_hash = ssh_digest_alg_by_name(optarg);
if (fingerprint_hash == -1)
fatal("Invalid hash algorithm \"%s\"", optarg);
break;
case 'H':
stringlist_append(&hostkey_files, optarg);
break;
case 'h':
stringlist_append(&dest_constraint_strings, optarg);
break;
case 'k':
key_only = 1;
break;
case 'K':
do_download = 1;
break;
case 'l':
case 'L':
if (lflag != 0)
fatal("-%c flag already specified", lflag);
lflag = ch;
break;
case 'x':
case 'X':
if (xflag != 0)
fatal("-%c flag already specified", xflag);
xflag = ch;
break;
case 'c':
confirm = 1;
break;
case 'm':
minleft = (int)strtonum(optarg, 1, UINT_MAX, NULL);
if (minleft == 0) {
usage();
ret = 1;
goto done;
}
break;
case 'M':
maxsign = (int)strtonum(optarg, 1, UINT_MAX, NULL);
if (maxsign == 0) {
usage();
ret = 1;
goto done;
}
break;
case 'd':
deleting = 1;
break;
case 'D':
Dflag = 1;
break;
case 's':
pkcs11provider = optarg;
break;
case 'S':
skprovider = optarg;
break;
case 'e':
deleting = 1;
pkcs11provider = optarg;
break;
case 't':
if ((lifetime = convtime(optarg)) == -1 ||
lifetime < 0 || (u_long)lifetime > UINT32_MAX) {
fprintf(stderr, "Invalid lifetime\n");
ret = 1;
goto done;
}
break;
case 'q':
qflag = 1;
break;
case 'T':
Tflag = 1;
break;
default:
usage();
ret = 1;
goto done;
}
1999-10-27 03:42:43 +00:00
}
log_init(__progname, log_level, log_facility, 1);
if ((xflag != 0) + (lflag != 0) + (Dflag != 0) > 1)
fatal("Invalid combination of actions");
else if (xflag) {
if (lock_agent(agent_fd, xflag == 'x' ? 1 : 0) == -1)
ret = 1;
goto done;
} else if (lflag) {
if (list_identities(agent_fd, lflag == 'l' ? 1 : 0) == -1)
ret = 1;
goto done;
} else if (Dflag) {
if (delete_all(agent_fd, qflag) == -1)
ret = 1;
goto done;
}
#ifdef ENABLE_SK_INTERNAL
if (skprovider == NULL)
skprovider = "internal";
#endif
if (hostkey_files == NULL) {
/* use defaults from readconf.c */
stringlist_append(&hostkey_files, _PATH_SSH_USER_HOSTFILE);
stringlist_append(&hostkey_files, _PATH_SSH_USER_HOSTFILE2);
stringlist_append(&hostkey_files, _PATH_SSH_SYSTEM_HOSTFILE);
stringlist_append(&hostkey_files, _PATH_SSH_SYSTEM_HOSTFILE2);
}
if (dest_constraint_strings != NULL) {
for (i = 0; dest_constraint_strings[i] != NULL; i++) {
parse_dest_constraint(dest_constraint_strings[i],
&dest_constraints, &ndest_constraints, hostkey_files);
}
}
argc -= optind;
argv += optind;
if (Tflag) {
if (argc <= 0)
fatal("no keys to test");
for (r = i = 0; i < argc; i++)
r |= test_key(agent_fd, argv[i]);
ret = r == 0 ? 0 : 1;
goto done;
}
if (pkcs11provider != NULL) {
if (update_card(agent_fd, !deleting, pkcs11provider,
qflag, dest_constraints, ndest_constraints) == -1)
ret = 1;
goto done;
}
if (do_download) {
if (skprovider == NULL)
fatal("Cannot download keys without provider");
if (load_resident_keys(agent_fd, skprovider, qflag,
dest_constraints, ndest_constraints) != 0)
ret = 1;
goto done;
}
if (argc == 0) {
char buf[PATH_MAX];
struct passwd *pw;
struct stat st;
int count = 0;
if ((pw = getpwuid(getuid())) == NULL) {
fprintf(stderr, "No user found with uid %u\n",
(u_int)getuid());
ret = 1;
goto done;
}
for (i = 0; default_files[i]; i++) {
snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir,
default_files[i]);
if (stat(buf, &st) == -1)
continue;
if (do_file(agent_fd, deleting, key_only, buf,
qflag, skprovider,
dest_constraints, ndest_constraints) == -1)
ret = 1;
else
count++;
}
if (count == 0)
ret = 1;
} else {
for (i = 0; i < argc; i++) {
if (do_file(agent_fd, deleting, key_only,
argv[i], qflag, skprovider,
dest_constraints, ndest_constraints) == -1)
ret = 1;
}
1999-10-27 03:42:43 +00:00
}
done:
clear_pass();
ssh_close_authentication_socket(agent_fd);
return ret;
1999-10-27 03:42:43 +00:00
}