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Annotation of src/usr.bin/ssh/auth2-passwd.c, Revision 1.20

1.20    ! djm         1: /* $OpenBSD: auth2-passwd.c,v 1.19 2020/10/18 11:32:01 djm Exp $ */
1.1       markus      2: /*
                      3:  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  *
                     14:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     15:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     16:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     17:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     18:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     19:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     20:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     21:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     22:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     23:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     24:  */
                     25:
1.9       deraadt    26: #include <sys/types.h>
1.8       stevesk    27:
1.17      djm        28: #include <stdlib.h>
1.8       stevesk    29: #include <string.h>
1.9       deraadt    30: #include <stdarg.h>
1.17      djm        31: #include <stdio.h>
1.1       markus     32:
                     33: #include "packet.h"
1.13      markus     34: #include "ssherr.h"
1.1       markus     35: #include "log.h"
1.13      markus     36: #include "sshkey.h"
1.9       deraadt    37: #include "hostfile.h"
1.1       markus     38: #include "auth.h"
1.9       deraadt    39: #ifdef GSSAPI
                     40: #include "ssh-gss.h"
                     41: #endif
1.1       markus     42: #include "monitor_wrap.h"
1.12      millert    43: #include "misc.h"
1.2       markus     44: #include "servconf.h"
1.1       markus     45:
1.2       markus     46: /* import */
                     47: extern ServerOptions options;
                     48:
                     49: static int
1.20    ! djm        50: userauth_passwd(struct ssh *ssh, const char *method)
1.1       markus     51: {
1.13      markus     52:        char *password;
                     53:        int authenticated = 0, r;
                     54:        u_char change;
                     55:        size_t len;
                     56:
                     57:        if ((r = sshpkt_get_u8(ssh, &change)) != 0 ||
                     58:            (r = sshpkt_get_cstring(ssh, &password, &len)) != 0 ||
                     59:            (change && (r = sshpkt_get_cstring(ssh, NULL, NULL)) != 0) ||
                     60:            (r = sshpkt_get_end(ssh)) != 0)
1.19      djm        61:                fatal_fr(r, "parse packet");
1.5       dtucker    62:
1.1       markus     63:        if (change)
1.3       itojun     64:                logit("password change not supported");
1.15      djm        65:        else if (PRIVSEP(auth_password(ssh, password)) == 1)
1.1       markus     66:                authenticated = 1;
1.18      jsg        67:        freezero(password, len);
1.1       markus     68:        return authenticated;
                     69: }
1.2       markus     70:
                     71: Authmethod method_passwd = {
                     72:        "password",
1.20    ! djm        73:        NULL,
1.2       markus     74:        userauth_passwd,
                     75:        &options.password_authentication
                     76: };