151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2005 The SCO Group. All rights reserved.
|
|
* Copyright (c) 2005 Tim Rice. All rights reserved.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
|
|
#if defined(HAVE_LIBIAF) && !defined(HAVE_SECUREWARE)
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_CRYPT_H
|
|
# include <crypt.h>
|
|
#endif
|
|
#include <pwd.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "xmalloc.h"
|
|
#include "packet.h"
|
|
#include "buffer.h"
|
|
#include "key.h"
|
|
#include "auth-options.h"
|
|
#include "log.h"
|
|
#include "misc.h" /* servconf.h needs misc.h for struct ForwardOptions */
|
|
#include "servconf.h"
|
|
#include "hostfile.h"
|
|
#include "auth.h"
|
|
#include "ssh.h"
|
|
|
|
int nischeck(char *);
|
|
|
|
int
|
|
sys_auth_passwd(Authctxt *authctxt, const char *password)
|
|
{
|
|
struct passwd *pw = authctxt->pw;
|
|
char *salt;
|
|
int result;
|
|
|
|
/* Just use the supplied fake password if authctxt is invalid */
|
|
char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd;
|
|
|
|
/* Check for users with no password. */
|
|
if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0)
|
|
return (1);
|
|
|
|
/* Encrypt the candidate password using the proper salt. */
|
|
salt = (pw_password[0] && pw_password[1]) ? pw_password : "xx";
|
|
|
|
/*
|
|
* Authentication is accepted if the encrypted passwords
|
|
* are identical.
|
|
*/
|
|
#ifdef UNIXWARE_LONG_PASSWORDS
|
|
if (!nischeck(pw->pw_name)) {
|
|
result = ((strcmp(bigcrypt(password, salt), pw_password) == 0)
|
|
|| (strcmp(osr5bigcrypt(password, salt), pw_password) == 0));
|
|
}
|
|
else
|
|
#endif /* UNIXWARE_LONG_PASSWORDS */
|
|
result = (strcmp(xcrypt(password, salt), pw_password) == 0);
|
|
|
|
#ifdef USE_LIBIAF
|
|
if (authctxt->valid)
|
|
free(pw_password);
|
|
#endif
|
|
return(result);
|
|
}
|
|
|
|
#ifdef UNIXWARE_LONG_PASSWORDS
|
|
int
|
|
nischeck(char *namep)
|
|
{
|
|
char password_file[] = "/etc/passwd";
|
|
FILE *fd;
|
|
struct passwd *ent = NULL;
|
|
|
|
if ((fd = fopen (password_file, "r")) == NULL) {
|
|
/*
|
|
* If the passwd file has dissapeared we are in a bad state.
|
|
* However, returning 0 will send us back through the
|
|
* authentication scheme that has checked the ia database for
|
|
* passwords earlier.
|
|
*/
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* fgetpwent() only reads from password file, so we know for certain
|
|
* that the user is local.
|
|
*/
|
|
while (ent = fgetpwent(fd)) {
|
|
if (strcmp (ent->pw_name, namep) == 0) {
|
|
/* Local user */
|
|
fclose (fd);
|
|
return(0);
|
|
}
|
|
}
|
|
|
|
fclose (fd);
|
|
return (1);
|
|
}
|
|
|
|
#endif /* UNIXWARE_LONG_PASSWORDS */
|
|
|
|
/*
|
|
NOTE: ia_get_logpwd() allocates memory for arg 2
|
|
functions that call shadow_pw() will need to free
|
|
*/
|
|
|
|
#ifdef USE_LIBIAF
|
|
char *
|
|
get_iaf_password(struct passwd *pw)
|
|
{
|
|
char *pw_password = NULL;
|
|
|
|
uinfo_t uinfo;
|
|
if (!ia_openinfo(pw->pw_name,&uinfo)) {
|
|
ia_get_logpwd(uinfo, &pw_password);
|
|
if (pw_password == NULL)
|
|
fatal("ia_get_logpwd: Unable to get the shadow passwd");
|
|
ia_closeinfo(uinfo);
|
|
return pw_password;
|
|
}
|
|
else
|
|
fatal("ia_openinfo: Unable to open the shadow passwd file");
|
|
}
|
|
#endif /* USE_LIBIAF */
|
|
#endif /* HAVE_LIBIAF and not HAVE_SECUREWARE */
|
|
|