mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-12-19 00:24:35 +00:00
aae6c614da
- [auth-krb4.c auth-passwd.c auth-skey.c ssh.
move skey-auth from auth-passwd.c to auth-s
- [auth-rsa.c]
warn only about mismatch if key is _used_
warn about keysize-mismatch with log() not
channels.c readconf.c readconf.h ssh.c ssh.
ports are u_short
- [hostfile.c]
indent, shorter warning
- [nchan.c]
use error() for internal errors
- [packet.c]
set loglevel for SSH_MSG_DISCONNECT to log(
serverloop.c
indent
- [ssh-add.1 ssh-add.c ssh.h]
document , reasonable default
- [ssh.1]
CheckHostIP is not available for connects v
- [sshconnect.c]
typo
easier to read client code for passwd and s
turn of checkhostip for proxy connects, sin
102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/*
|
|
* Author: Tatu Ylonen <ylo@cs.hut.fi>
|
|
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
|
|
* All rights reserved
|
|
* Created: Sat Mar 18 05:11:38 1995 ylo
|
|
* Password authentication. This file contains the functions to check whether
|
|
* the password is valid for the user.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
|
|
#ifndef HAVE_PAM
|
|
|
|
RCSID("$Id: auth-passwd.c,v 1.8 1999/12/06 00:47:28 damien Exp $");
|
|
|
|
#include "packet.h"
|
|
#include "ssh.h"
|
|
#include "servconf.h"
|
|
#include "xmalloc.h"
|
|
|
|
#ifdef HAVE_SHADOW_H
|
|
#include <shadow.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_MD5_PASSWORDS
|
|
#include "md5crypt.h"
|
|
#endif
|
|
|
|
/*
|
|
* Tries to authenticate the user using password. Returns true if
|
|
* authentication succeeds.
|
|
*/
|
|
int
|
|
auth_password(struct passwd * pw, const char *password)
|
|
{
|
|
extern ServerOptions options;
|
|
char *encrypted_password;
|
|
#ifdef HAVE_SHADOW_H
|
|
struct spwd *spw;
|
|
#endif
|
|
|
|
if (pw->pw_uid == 0 && options.permit_root_login == 2)
|
|
return 0;
|
|
if (*password == '\0' && options.permit_empty_passwd == 0)
|
|
return 0;
|
|
/* deny if no user. */
|
|
if (pw == NULL)
|
|
return 0;
|
|
|
|
#ifdef SKEY
|
|
if (options.skey_authentication == 1) {
|
|
int ret = auth_skey_password(pw, password);
|
|
if (ret == 1 || ret == 0)
|
|
return ret;
|
|
/* Fall back to ordinary passwd authentication. */
|
|
}
|
|
#endif
|
|
#ifdef KRB4
|
|
if (options.kerberos_authentication == 1) {
|
|
int ret = auth_krb4_password(pw, password);
|
|
if (ret == 1 || ret == 0)
|
|
return ret;
|
|
/* Fall back to ordinary passwd authentication. */
|
|
}
|
|
#endif
|
|
|
|
/* Check for users with no password. */
|
|
if (strcmp(password, "") == 0 && strcmp(pw->pw_passwd, "") == 0)
|
|
return 1;
|
|
|
|
#ifdef HAVE_SHADOW_H
|
|
spw = getspnam(pw->pw_name);
|
|
if (spw == NULL)
|
|
return(0);
|
|
|
|
if ((spw->sp_namp == NULL) || (strcmp(pw->pw_name, spw->sp_namp) != 0))
|
|
fatal("Shadow lookup returned garbage.");
|
|
|
|
if (strlen(spw->sp_pwdp) < 3)
|
|
return(0);
|
|
|
|
/* Encrypt the candidate password using the proper salt. */
|
|
#ifdef HAVE_MD5_PASSWORDS
|
|
if (is_md5_salt(spw->sp_pwdp))
|
|
encrypted_password = md5_crypt(password, spw->sp_pwdp);
|
|
else
|
|
encrypted_password = crypt(password, spw->sp_pwdp);
|
|
#else /* HAVE_MD5_PASSWORDS */
|
|
encrypted_password = crypt(password, spw->sp_pwdp);
|
|
#endif /* HAVE_MD5_PASSWORDS */
|
|
/* Authentication is accepted if the encrypted passwords are identical. */
|
|
return (strcmp(encrypted_password, spw->sp_pwdp) == 0);
|
|
#else /* !HAVE_SHADOW_H */
|
|
encrypted_password = crypt(password,
|
|
(pw->pw_passwd[0] && pw->pw_passwd[1]) ? pw->pw_passwd : "xx");
|
|
|
|
/* Authentication is accepted if the encrypted passwords are identical. */
|
|
return (strcmp(encrypted_password, pw->pw_passwd) == 0);
|
|
#endif /* !HAVE_SHADOW_H */
|
|
}
|
|
#endif /* !HAVE_PAM */
|