[openssh.git] / openbsd-compat / port-uw.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"

#ifdef HAVE_LIBIAF
#ifdef HAVE_CRYPT_H
#include <crypt.h>
#endif
#include "packet.h"
#include "buffer.h"
#include "log.h"
#include "servconf.h"
#include "auth.h"
#include "auth-options.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);

#if !defined(BROKEN_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
 */

#if !defined(BROKEN_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 /* !BROKEN_LIBIAF */
#endif /* HAVE_LIBIAF */
Commit	Line	Data
4c653d8e	1	/*
	2	* Copyright (c) 2005 The SCO Group. All rights reserved.
	3	* Copyright (c) 2005 Tim Rice. 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
	26	#include "includes.h"
	27
d2a3abef	28	#ifdef HAVE_LIBIAF
4c653d8e	29	#ifdef HAVE_CRYPT_H
	30	#include <crypt.h>
	31	#endif
	32	#include "packet.h"
	33	#include "buffer.h"
	34	#include "log.h"
	35	#include "servconf.h"
	36	#include "auth.h"
	37	#include "auth-options.h"
	38
	39	int nischeck(char *);
	40
	41	int
	42	sys_auth_passwd(Authctxt authctxt, const char password)
	43	{
	44	struct passwd *pw = authctxt->pw;
4c653d8e	45	char *salt;
26d07095	46	int result;
4c653d8e	47
	48	/* Just use the supplied fake password if authctxt is invalid */
	49	char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd;
	50
	51	/* Check for users with no password. */
	52	if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0)
	53	return (1);
	54
26d07095	55	/* Encrypt the candidate password using the proper salt. */
4c653d8e	56	salt = (pw_password[0] && pw_password[1]) ? pw_password : "xx";
26d07095	57
	58	/*
	59	* Authentication is accepted if the encrypted passwords
	60	* are identical.
	61	*/
d2a3abef	62	#ifdef UNIXWARE_LONG_PASSWORDS
	63	if (!nischeck(pw->pw_name)) {
	64	result = ((strcmp(bigcrypt(password, salt), pw_password) == 0)
	65	\|\| (strcmp(osr5bigcrypt(password, salt), pw_password) == 0));
	66	}
	67	else
	68	#endif /* UNIXWARE_LONG_PASSWORDS */
	69	result = (strcmp(xcrypt(password, salt), pw_password) == 0);
26d07095	70
d2a3abef	71	#if !defined(BROKEN_LIBIAF)
26d07095	72	if (authctxt->valid)
26d07095	73	free(pw_password);
d2a3abef	74	#endif
26d07095	75	return(result);
4c653d8e	76	}
4c653d8e	77
26d07095	78	#ifdef UNIXWARE_LONG_PASSWORDS
4c653d8e	79	int
	80	nischeck(char *namep)
	81	{
	82	char password_file[] = "/etc/passwd";
	83	FILE *fd;
	84	struct passwd *ent = NULL;
	85
	86	if ((fd = fopen (password_file, "r")) == NULL) {
	87	/*
	88	* If the passwd file has dissapeared we are in a bad state.
	89	* However, returning 0 will send us back through the
	90	* authentication scheme that has checked the ia database for
	91	* passwords earlier.
	92	*/
	93	return(0);
	94	}
	95
	96	/*
	97	* fgetpwent() only reads from password file, so we know for certain
	98	* that the user is local.
	99	*/
	100	while (ent = fgetpwent(fd)) {
	101	if (strcmp (ent->pw_name, namep) == 0) {
	102	/* Local user */
	103	fclose (fd);
	104	return(0);
	105	}
	106	}
	107
	108	fclose (fd);
	109	return (1);
	110	}
	111
	112	#endif /* UNIXWARE_LONG_PASSWORDS */
	113
26d07095	114	/*
	115	NOTE: ia_get_logpwd() allocates memory for arg 2
	116	functions that call shadow_pw() will need to free
	117	*/
	118
d2a3abef	119	#if !defined(BROKEN_LIBIAF)
4c653d8e	120	char *
	121	get_iaf_password(struct passwd *pw)
	122	{
	123	char *pw_password = NULL;
	124
	125	uinfo_t uinfo;
	126	if (!ia_openinfo(pw->pw_name,&uinfo)) {
	127	ia_get_logpwd(uinfo, &pw_password);
	128	if (pw_password == NULL)
26d07095	129	fatal("ia_get_logpwd: Unable to get the shadow passwd");
4c653d8e	130	ia_closeinfo(uinfo);
	131	return pw_password;
	132	}
	133	else
26d07095	134	fatal("ia_openinfo: Unable to open the shadow passwd file");
4c653d8e	135	}
d2a3abef	136	#endif /* !BROKEN_LIBIAF */
d2a3abef	137	#endif /* HAVE_LIBIAF */
4c653d8e	138