Annotation of src/usr.bin/ssh/auth2-passwd.c, Revision 1.14
1.14 ! markus 1: /* $OpenBSD: auth2-passwd.c,v 1.13 2017/05/30 14:26:49 markus 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:
28: #include <string.h>
1.9 deraadt 29: #include <stdarg.h>
1.1 markus 30:
31: #include "packet.h"
1.13 markus 32: #include "ssherr.h"
1.1 markus 33: #include "log.h"
1.13 markus 34: #include "sshkey.h"
1.9 deraadt 35: #include "hostfile.h"
1.1 markus 36: #include "auth.h"
1.9 deraadt 37: #include "buffer.h"
38: #ifdef GSSAPI
39: #include "ssh-gss.h"
40: #endif
1.1 markus 41: #include "monitor_wrap.h"
1.12 millert 42: #include "misc.h"
1.2 markus 43: #include "servconf.h"
1.1 markus 44:
1.2 markus 45: /* import */
46: extern ServerOptions options;
47:
48: static int
1.14 ! markus 49: userauth_passwd(struct ssh *ssh)
1.1 markus 50: {
1.13 markus 51: char *password;
52: int authenticated = 0, r;
53: u_char change;
54: size_t len;
55:
56: if ((r = sshpkt_get_u8(ssh, &change)) != 0 ||
57: (r = sshpkt_get_cstring(ssh, &password, &len)) != 0 ||
58: (change && (r = sshpkt_get_cstring(ssh, NULL, NULL)) != 0) ||
59: (r = sshpkt_get_end(ssh)) != 0)
60: fatal("%s: %s", __func__, ssh_err(r));
1.5 dtucker 61:
1.1 markus 62: if (change)
1.3 itojun 63: logit("password change not supported");
1.13 markus 64: else if (PRIVSEP(auth_password(ssh->authctxt, password)) == 1)
1.1 markus 65: authenticated = 1;
1.11 djm 66: explicit_bzero(password, len);
1.10 djm 67: free(password);
1.1 markus 68: return authenticated;
69: }
1.2 markus 70:
71: Authmethod method_passwd = {
72: "password",
73: userauth_passwd,
74: &options.password_authentication
75: };