mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
936 lines
20 KiB
C
936 lines
20 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2021 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/*
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* int lutil_passwd(
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* const struct berval *passwd,
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* const struct berval *cred,
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* const char **schemes )
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*
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* Returns true if user supplied credentials (cred) matches
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* the stored password (passwd).
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*
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* Due to the use of the crypt(3) function
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* this routine is NOT thread-safe.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/stdlib.h>
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#include <ac/string.h>
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#include <ac/unistd.h>
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#include <ac/param.h>
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#ifdef SLAPD_CRYPT
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# include <ac/crypt.h>
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# if defined( HAVE_GETPWNAM ) && defined( HAVE_STRUCT_PASSWD_PW_PASSWD )
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# ifdef HAVE_SHADOW_H
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# include <shadow.h>
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# endif
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# ifdef HAVE_PWD_H
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# include <pwd.h>
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# endif
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# ifdef HAVE_AIX_SECURITY
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# include <userpw.h>
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# endif
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# endif
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#endif
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#include <lber.h>
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#include "ldap_pvt.h"
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#include "lber_pvt.h"
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#include "lutil_md5.h"
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#include "lutil_sha1.h"
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#include "lutil.h"
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static const unsigned char crypt64[] =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890./";
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#ifdef SLAPD_CRYPT
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static char *salt_format = NULL;
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static lutil_cryptfunc lutil_crypt;
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lutil_cryptfunc *lutil_cryptptr = lutil_crypt;
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#endif
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/* KLUDGE:
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* chk_fn is NULL iff name is {CLEARTEXT}
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* otherwise, things will break
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*/
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struct pw_scheme {
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struct berval name;
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LUTIL_PASSWD_CHK_FUNC *chk_fn;
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LUTIL_PASSWD_HASH_FUNC *hash_fn;
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};
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struct pw_slist {
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struct pw_slist *next;
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struct pw_scheme s;
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};
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/* password check routines */
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#define SALT_SIZE 4
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static LUTIL_PASSWD_CHK_FUNC chk_md5;
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static LUTIL_PASSWD_CHK_FUNC chk_smd5;
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static LUTIL_PASSWD_HASH_FUNC hash_smd5;
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static LUTIL_PASSWD_HASH_FUNC hash_md5;
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#ifdef LUTIL_SHA1_BYTES
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static LUTIL_PASSWD_CHK_FUNC chk_ssha1;
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static LUTIL_PASSWD_CHK_FUNC chk_sha1;
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static LUTIL_PASSWD_HASH_FUNC hash_sha1;
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static LUTIL_PASSWD_HASH_FUNC hash_ssha1;
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#endif
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#ifdef SLAPD_CRYPT
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static LUTIL_PASSWD_CHK_FUNC chk_crypt;
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static LUTIL_PASSWD_HASH_FUNC hash_crypt;
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#if defined( HAVE_GETPWNAM ) && defined( HAVE_STRUCT_PASSWD_PW_PASSWD )
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static LUTIL_PASSWD_CHK_FUNC chk_unix;
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#endif
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#endif
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/* password hash routines */
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#ifdef SLAPD_CLEARTEXT
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static LUTIL_PASSWD_HASH_FUNC hash_clear;
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#endif
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static struct pw_slist *pw_schemes;
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static int pw_inited;
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static const struct pw_scheme pw_schemes_default[] =
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{
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#ifdef LUTIL_SHA1_BYTES
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{ BER_BVC("{SSHA}"), chk_ssha1, hash_ssha1 },
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{ BER_BVC("{SHA}"), chk_sha1, hash_sha1 },
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#endif
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{ BER_BVC("{SMD5}"), chk_smd5, hash_smd5 },
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{ BER_BVC("{MD5}"), chk_md5, hash_md5 },
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#ifdef SLAPD_CRYPT
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{ BER_BVC("{CRYPT}"), chk_crypt, hash_crypt },
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# if defined( HAVE_GETPWNAM ) && defined( HAVE_STRUCT_PASSWD_PW_PASSWD )
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{ BER_BVC("{UNIX}"), chk_unix, NULL },
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# endif
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#endif
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#ifdef SLAPD_CLEARTEXT
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/* pseudo scheme */
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{ BER_BVC("{CLEARTEXT}"), NULL, hash_clear },
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#endif
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{ BER_BVNULL, NULL, NULL }
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};
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int lutil_passwd_add(
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struct berval *scheme,
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LUTIL_PASSWD_CHK_FUNC *chk,
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LUTIL_PASSWD_HASH_FUNC *hash )
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{
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struct pw_slist *ptr;
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if (!pw_inited) lutil_passwd_init();
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ptr = ber_memalloc( sizeof( struct pw_slist ));
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if (!ptr) return -1;
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ptr->next = pw_schemes;
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ptr->s.name = *scheme;
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ptr->s.chk_fn = chk;
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ptr->s.hash_fn = hash;
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pw_schemes = ptr;
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return 0;
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}
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void lutil_passwd_init()
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{
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struct pw_scheme *s;
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pw_inited = 1;
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for( s=(struct pw_scheme *)pw_schemes_default; s->name.bv_val; s++) {
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if ( lutil_passwd_add( &s->name, s->chk_fn, s->hash_fn ) ) break;
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}
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}
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void lutil_passwd_destroy()
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{
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struct pw_slist *ptr, *next;
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for( ptr=pw_schemes; ptr; ptr=next ) {
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next = ptr->next;
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ber_memfree( ptr );
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}
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}
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static const struct pw_scheme *get_scheme(
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const char* scheme )
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{
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struct pw_slist *pws;
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struct berval bv;
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if (!pw_inited) lutil_passwd_init();
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bv.bv_val = strchr( scheme, '}' );
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if ( !bv.bv_val )
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return NULL;
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bv.bv_len = bv.bv_val - scheme + 1;
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bv.bv_val = (char *) scheme;
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for( pws=pw_schemes; pws; pws=pws->next ) {
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if ( ber_bvstrcasecmp(&bv, &pws->s.name ) == 0 ) {
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return &(pws->s);
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}
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}
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return NULL;
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}
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int lutil_passwd_scheme(
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const char* scheme )
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{
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if( scheme == NULL ) {
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return 0;
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}
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return get_scheme(scheme) != NULL;
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}
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static int is_allowed_scheme(
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const char* scheme,
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const char** schemes )
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{
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int i;
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if( schemes == NULL ) return 1;
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for( i=0; schemes[i] != NULL; i++ ) {
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if( strcasecmp( scheme, schemes[i] ) == 0 ) {
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return 1;
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}
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}
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return 0;
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}
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static struct berval *passwd_scheme(
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const struct pw_scheme *scheme,
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const struct berval * passwd,
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struct berval *bv,
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const char** allowed )
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{
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if( !is_allowed_scheme( scheme->name.bv_val, allowed ) ) {
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return NULL;
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}
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if( passwd->bv_len >= scheme->name.bv_len ) {
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if( strncasecmp( passwd->bv_val, scheme->name.bv_val, scheme->name.bv_len ) == 0 ) {
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bv->bv_val = &passwd->bv_val[scheme->name.bv_len];
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bv->bv_len = passwd->bv_len - scheme->name.bv_len;
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return bv;
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}
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}
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return NULL;
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}
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/*
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* Return 0 if creds are good.
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*/
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int
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lutil_passwd(
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const struct berval *passwd, /* stored passwd */
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const struct berval *cred, /* user cred */
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const char **schemes,
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const char **text )
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{
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struct pw_slist *pws;
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if ( text ) *text = NULL;
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if (cred == NULL || cred->bv_len == 0 ||
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passwd == NULL || passwd->bv_len == 0 )
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{
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return -1;
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}
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if (!pw_inited) lutil_passwd_init();
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for( pws=pw_schemes; pws; pws=pws->next ) {
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if( pws->s.chk_fn ) {
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struct berval x;
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struct berval *p = passwd_scheme( &(pws->s),
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passwd, &x, schemes );
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if( p != NULL ) {
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return (pws->s.chk_fn)( &(pws->s.name), p, cred, text );
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}
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}
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}
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#ifdef SLAPD_CLEARTEXT
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/* Do we think there is a scheme specifier here that we
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* didn't recognize? Assume a scheme name is at least 1 character.
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*/
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if (( passwd->bv_val[0] == '{' ) &&
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( ber_bvchr( passwd, '}' ) > passwd->bv_val+1 ))
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{
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return 1;
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}
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if( is_allowed_scheme("{CLEARTEXT}", schemes ) ) {
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return ( passwd->bv_len == cred->bv_len ) ?
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memcmp( passwd->bv_val, cred->bv_val, passwd->bv_len )
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: 1;
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}
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#endif
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return 1;
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}
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int lutil_passwd_generate( struct berval *pw, ber_len_t len )
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{
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if( len < 1 ) return -1;
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pw->bv_len = len;
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pw->bv_val = ber_memalloc( len + 1 );
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if( pw->bv_val == NULL ) {
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return -1;
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}
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if( lutil_entropy( (unsigned char *) pw->bv_val, pw->bv_len) < 0 ) {
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return -1;
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}
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for( len = 0; len < pw->bv_len; len++ ) {
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pw->bv_val[len] = crypt64[
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pw->bv_val[len] % (sizeof(crypt64)-1) ];
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}
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pw->bv_val[len] = '\0';
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return 0;
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}
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int lutil_passwd_hash(
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const struct berval * passwd,
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const char * method,
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struct berval *hash,
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const char **text )
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{
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const struct pw_scheme *sc = get_scheme( method );
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hash->bv_val = NULL;
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hash->bv_len = 0;
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if( sc == NULL ) {
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if( text ) *text = "scheme not recognized";
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return -1;
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}
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if( ! sc->hash_fn ) {
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if( text ) *text = "scheme provided no hash function";
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return -1;
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}
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if( text ) *text = NULL;
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return (sc->hash_fn)( &sc->name, passwd, hash, text );
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}
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/* pw_string is only called when SLAPD_CRYPT is defined */
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#if defined(SLAPD_CRYPT)
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static int pw_string(
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const struct berval *sc,
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struct berval *passwd )
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{
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struct berval pw;
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pw.bv_len = sc->bv_len + passwd->bv_len;
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pw.bv_val = ber_memalloc( pw.bv_len + 1 );
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if( pw.bv_val == NULL ) {
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return LUTIL_PASSWD_ERR;
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}
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AC_MEMCPY( pw.bv_val, sc->bv_val, sc->bv_len );
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AC_MEMCPY( &pw.bv_val[sc->bv_len], passwd->bv_val, passwd->bv_len );
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pw.bv_val[pw.bv_len] = '\0';
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*passwd = pw;
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return LUTIL_PASSWD_OK;
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}
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#endif /* SLAPD_CRYPT */
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int lutil_passwd_string64(
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const struct berval *sc,
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const struct berval *hash,
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struct berval *b64,
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const struct berval *salt )
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{
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int rc;
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struct berval string;
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size_t b64len;
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if( salt ) {
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/* need to base64 combined string */
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string.bv_len = hash->bv_len + salt->bv_len;
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string.bv_val = ber_memalloc( string.bv_len + 1 );
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if( string.bv_val == NULL ) {
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return LUTIL_PASSWD_ERR;
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}
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AC_MEMCPY( string.bv_val, hash->bv_val,
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hash->bv_len );
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AC_MEMCPY( &string.bv_val[hash->bv_len], salt->bv_val,
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salt->bv_len );
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string.bv_val[string.bv_len] = '\0';
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} else {
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string = *hash;
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}
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b64len = LUTIL_BASE64_ENCODE_LEN( string.bv_len ) + 1;
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b64->bv_len = b64len + sc->bv_len;
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b64->bv_val = ber_memalloc( b64->bv_len + 1 );
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if( b64->bv_val == NULL ) {
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if( salt ) ber_memfree( string.bv_val );
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return LUTIL_PASSWD_ERR;
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}
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AC_MEMCPY(b64->bv_val, sc->bv_val, sc->bv_len);
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rc = lutil_b64_ntop(
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(unsigned char *) string.bv_val, string.bv_len,
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&b64->bv_val[sc->bv_len], b64len );
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if( salt ) ber_memfree( string.bv_val );
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if( rc < 0 ) {
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return LUTIL_PASSWD_ERR;
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}
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/* recompute length */
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b64->bv_len = sc->bv_len + rc;
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assert( strlen(b64->bv_val) == b64->bv_len );
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return LUTIL_PASSWD_OK;
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}
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/* PASSWORD CHECK ROUTINES */
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#ifdef LUTIL_SHA1_BYTES
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static int chk_ssha1(
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const struct berval *sc,
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const struct berval * passwd,
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const struct berval * cred,
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const char **text )
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{
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lutil_SHA1_CTX SHA1context;
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unsigned char SHA1digest[LUTIL_SHA1_BYTES];
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int rc;
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unsigned char *orig_pass = NULL;
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size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
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/* safety check -- must have some salt */
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if (decode_len <= sizeof(SHA1digest)) {
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return LUTIL_PASSWD_ERR;
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}
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/* decode base64 password */
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orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
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if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
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rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
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/* safety check -- must have some salt */
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if (rc <= (int)(sizeof(SHA1digest))) {
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ber_memfree(orig_pass);
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return LUTIL_PASSWD_ERR;
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}
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/* hash credentials with salt */
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lutil_SHA1Init(&SHA1context);
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lutil_SHA1Update(&SHA1context,
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(const unsigned char *) cred->bv_val, cred->bv_len);
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lutil_SHA1Update(&SHA1context,
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(const unsigned char *) &orig_pass[sizeof(SHA1digest)],
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rc - sizeof(SHA1digest));
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lutil_SHA1Final(SHA1digest, &SHA1context);
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/* compare */
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rc = memcmp((char *)orig_pass, (char *)SHA1digest, sizeof(SHA1digest));
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ber_memfree(orig_pass);
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return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
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}
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static int chk_sha1(
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const struct berval *sc,
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const struct berval * passwd,
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const struct berval * cred,
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const char **text )
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{
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lutil_SHA1_CTX SHA1context;
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unsigned char SHA1digest[LUTIL_SHA1_BYTES];
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int rc;
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unsigned char *orig_pass = NULL;
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size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
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/* safety check */
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if (decode_len < sizeof(SHA1digest)) {
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return LUTIL_PASSWD_ERR;
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}
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/* base64 un-encode password */
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orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
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if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
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rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
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if( rc != sizeof(SHA1digest) ) {
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ber_memfree(orig_pass);
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return LUTIL_PASSWD_ERR;
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}
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/* hash credentials with salt */
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lutil_SHA1Init(&SHA1context);
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lutil_SHA1Update(&SHA1context,
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(const unsigned char *) cred->bv_val, cred->bv_len);
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lutil_SHA1Final(SHA1digest, &SHA1context);
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/* compare */
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rc = memcmp((char *)orig_pass, (char *)SHA1digest, sizeof(SHA1digest));
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ber_memfree(orig_pass);
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return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
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}
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#endif
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|
|
static int chk_smd5(
|
|
const struct berval *sc,
|
|
const struct berval * passwd,
|
|
const struct berval * cred,
|
|
const char **text )
|
|
{
|
|
lutil_MD5_CTX MD5context;
|
|
unsigned char MD5digest[LUTIL_MD5_BYTES];
|
|
int rc;
|
|
unsigned char *orig_pass = NULL;
|
|
size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
|
|
|
|
/* safety check */
|
|
if (decode_len <= sizeof(MD5digest)) {
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
/* base64 un-encode password */
|
|
orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
|
|
|
|
if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
|
|
|
|
rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
|
|
|
|
if (rc <= (int)(sizeof(MD5digest))) {
|
|
ber_memfree(orig_pass);
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
/* hash credentials with salt */
|
|
lutil_MD5Init(&MD5context);
|
|
lutil_MD5Update(&MD5context,
|
|
(const unsigned char *) cred->bv_val,
|
|
cred->bv_len );
|
|
lutil_MD5Update(&MD5context,
|
|
&orig_pass[sizeof(MD5digest)],
|
|
rc - sizeof(MD5digest));
|
|
lutil_MD5Final(MD5digest, &MD5context);
|
|
|
|
/* compare */
|
|
rc = memcmp((char *)orig_pass, (char *)MD5digest, sizeof(MD5digest));
|
|
ber_memfree(orig_pass);
|
|
return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
|
|
}
|
|
|
|
static int chk_md5(
|
|
const struct berval *sc,
|
|
const struct berval * passwd,
|
|
const struct berval * cred,
|
|
const char **text )
|
|
{
|
|
lutil_MD5_CTX MD5context;
|
|
unsigned char MD5digest[LUTIL_MD5_BYTES];
|
|
int rc;
|
|
unsigned char *orig_pass = NULL;
|
|
size_t decode_len = LUTIL_BASE64_DECODE_LEN(passwd->bv_len);
|
|
|
|
/* safety check */
|
|
if (decode_len < sizeof(MD5digest)) {
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
/* base64 un-encode password */
|
|
orig_pass = (unsigned char *) ber_memalloc(decode_len + 1);
|
|
|
|
if( orig_pass == NULL ) return LUTIL_PASSWD_ERR;
|
|
|
|
rc = lutil_b64_pton(passwd->bv_val, orig_pass, decode_len);
|
|
if ( rc != sizeof(MD5digest) ) {
|
|
ber_memfree(orig_pass);
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
/* hash credentials with salt */
|
|
lutil_MD5Init(&MD5context);
|
|
lutil_MD5Update(&MD5context,
|
|
(const unsigned char *) cred->bv_val,
|
|
cred->bv_len );
|
|
lutil_MD5Final(MD5digest, &MD5context);
|
|
|
|
/* compare */
|
|
rc = memcmp((char *)orig_pass, (char *)MD5digest, sizeof(MD5digest));
|
|
ber_memfree(orig_pass);
|
|
return rc ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
|
|
}
|
|
|
|
#ifdef SLAPD_CRYPT
|
|
static int lutil_crypt(
|
|
const char *key,
|
|
const char *salt,
|
|
char **hash )
|
|
{
|
|
char *cr = crypt( key, salt );
|
|
int rc;
|
|
|
|
if( cr == NULL || cr[0] == '\0' ) {
|
|
/* salt must have been invalid */
|
|
rc = LUTIL_PASSWD_ERR;
|
|
} else {
|
|
if ( hash ) {
|
|
*hash = ber_strdup( cr );
|
|
rc = LUTIL_PASSWD_OK;
|
|
} else {
|
|
rc = strcmp( salt, cr ) ? LUTIL_PASSWD_ERR : LUTIL_PASSWD_OK;
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
static int chk_crypt(
|
|
const struct berval *sc,
|
|
const struct berval * passwd,
|
|
const struct berval * cred,
|
|
const char **text )
|
|
{
|
|
unsigned int i;
|
|
|
|
for( i=0; i<cred->bv_len; i++) {
|
|
if(cred->bv_val[i] == '\0') {
|
|
return LUTIL_PASSWD_ERR; /* NUL character in password */
|
|
}
|
|
}
|
|
|
|
if( cred->bv_val[i] != '\0' ) {
|
|
return LUTIL_PASSWD_ERR; /* cred must behave like a string */
|
|
}
|
|
|
|
if( passwd->bv_len < 2 ) {
|
|
return LUTIL_PASSWD_ERR; /* passwd must be at least two characters long */
|
|
}
|
|
|
|
for( i=0; i<passwd->bv_len; i++) {
|
|
if(passwd->bv_val[i] == '\0') {
|
|
return LUTIL_PASSWD_ERR; /* NUL character in password */
|
|
}
|
|
}
|
|
|
|
if( passwd->bv_val[i] != '\0' ) {
|
|
return LUTIL_PASSWD_ERR; /* passwd must behave like a string */
|
|
}
|
|
|
|
return lutil_cryptptr( cred->bv_val, passwd->bv_val, NULL );
|
|
}
|
|
|
|
# if defined( HAVE_GETPWNAM ) && defined( HAVE_STRUCT_PASSWD_PW_PASSWD )
|
|
static int chk_unix(
|
|
const struct berval *sc,
|
|
const struct berval * passwd,
|
|
const struct berval * cred,
|
|
const char **text )
|
|
{
|
|
unsigned int i;
|
|
char *pw;
|
|
|
|
for( i=0; i<cred->bv_len; i++) {
|
|
if(cred->bv_val[i] == '\0') {
|
|
return LUTIL_PASSWD_ERR; /* NUL character in password */
|
|
}
|
|
}
|
|
if( cred->bv_val[i] != '\0' ) {
|
|
return LUTIL_PASSWD_ERR; /* cred must behave like a string */
|
|
}
|
|
|
|
for( i=0; i<passwd->bv_len; i++) {
|
|
if(passwd->bv_val[i] == '\0') {
|
|
return LUTIL_PASSWD_ERR; /* NUL character in password */
|
|
}
|
|
}
|
|
|
|
if( passwd->bv_val[i] != '\0' ) {
|
|
return LUTIL_PASSWD_ERR; /* passwd must behave like a string */
|
|
}
|
|
|
|
{
|
|
struct passwd *pwd = getpwnam(passwd->bv_val);
|
|
|
|
if(pwd == NULL) {
|
|
return LUTIL_PASSWD_ERR; /* not found */
|
|
}
|
|
|
|
pw = pwd->pw_passwd;
|
|
}
|
|
# ifdef HAVE_GETSPNAM
|
|
{
|
|
struct spwd *spwd = getspnam(passwd->bv_val);
|
|
|
|
if(spwd != NULL) {
|
|
pw = spwd->sp_pwdp;
|
|
}
|
|
}
|
|
# endif
|
|
# ifdef HAVE_AIX_SECURITY
|
|
{
|
|
struct userpw *upw = getuserpw(passwd->bv_val);
|
|
|
|
if (upw != NULL) {
|
|
pw = upw->upw_passwd;
|
|
}
|
|
}
|
|
# endif
|
|
|
|
if( pw == NULL || pw[0] == '\0' || pw[1] == '\0' ) {
|
|
/* password must must be at least two characters long */
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
return lutil_cryptptr( cred->bv_val, pw, NULL );
|
|
}
|
|
# endif
|
|
#endif
|
|
|
|
/* PASSWORD GENERATION ROUTINES */
|
|
|
|
#ifdef LUTIL_SHA1_BYTES
|
|
static int hash_ssha1(
|
|
const struct berval *scheme,
|
|
const struct berval *passwd,
|
|
struct berval *hash,
|
|
const char **text )
|
|
{
|
|
lutil_SHA1_CTX SHA1context;
|
|
unsigned char SHA1digest[LUTIL_SHA1_BYTES];
|
|
char saltdata[SALT_SIZE];
|
|
struct berval digest;
|
|
struct berval salt;
|
|
|
|
digest.bv_val = (char *) SHA1digest;
|
|
digest.bv_len = sizeof(SHA1digest);
|
|
salt.bv_val = saltdata;
|
|
salt.bv_len = sizeof(saltdata);
|
|
|
|
if( lutil_entropy( (unsigned char *) salt.bv_val, salt.bv_len) < 0 ) {
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
lutil_SHA1Init( &SHA1context );
|
|
lutil_SHA1Update( &SHA1context,
|
|
(const unsigned char *)passwd->bv_val, passwd->bv_len );
|
|
lutil_SHA1Update( &SHA1context,
|
|
(const unsigned char *)salt.bv_val, salt.bv_len );
|
|
lutil_SHA1Final( SHA1digest, &SHA1context );
|
|
|
|
return lutil_passwd_string64( scheme, &digest, hash, &salt);
|
|
}
|
|
|
|
static int hash_sha1(
|
|
const struct berval *scheme,
|
|
const struct berval *passwd,
|
|
struct berval *hash,
|
|
const char **text )
|
|
{
|
|
lutil_SHA1_CTX SHA1context;
|
|
unsigned char SHA1digest[LUTIL_SHA1_BYTES];
|
|
struct berval digest;
|
|
digest.bv_val = (char *) SHA1digest;
|
|
digest.bv_len = sizeof(SHA1digest);
|
|
|
|
lutil_SHA1Init( &SHA1context );
|
|
lutil_SHA1Update( &SHA1context,
|
|
(const unsigned char *)passwd->bv_val, passwd->bv_len );
|
|
lutil_SHA1Final( SHA1digest, &SHA1context );
|
|
|
|
return lutil_passwd_string64( scheme, &digest, hash, NULL);
|
|
}
|
|
#endif
|
|
|
|
static int hash_smd5(
|
|
const struct berval *scheme,
|
|
const struct berval *passwd,
|
|
struct berval *hash,
|
|
const char **text )
|
|
{
|
|
lutil_MD5_CTX MD5context;
|
|
unsigned char MD5digest[LUTIL_MD5_BYTES];
|
|
char saltdata[SALT_SIZE];
|
|
struct berval digest;
|
|
struct berval salt;
|
|
|
|
digest.bv_val = (char *) MD5digest;
|
|
digest.bv_len = sizeof(MD5digest);
|
|
salt.bv_val = saltdata;
|
|
salt.bv_len = sizeof(saltdata);
|
|
|
|
if( lutil_entropy( (unsigned char *) salt.bv_val, salt.bv_len) < 0 ) {
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
lutil_MD5Init( &MD5context );
|
|
lutil_MD5Update( &MD5context,
|
|
(const unsigned char *) passwd->bv_val, passwd->bv_len );
|
|
lutil_MD5Update( &MD5context,
|
|
(const unsigned char *) salt.bv_val, salt.bv_len );
|
|
lutil_MD5Final( MD5digest, &MD5context );
|
|
|
|
return lutil_passwd_string64( scheme, &digest, hash, &salt );
|
|
}
|
|
|
|
static int hash_md5(
|
|
const struct berval *scheme,
|
|
const struct berval *passwd,
|
|
struct berval *hash,
|
|
const char **text )
|
|
{
|
|
lutil_MD5_CTX MD5context;
|
|
unsigned char MD5digest[LUTIL_MD5_BYTES];
|
|
|
|
struct berval digest;
|
|
|
|
digest.bv_val = (char *) MD5digest;
|
|
digest.bv_len = sizeof(MD5digest);
|
|
|
|
lutil_MD5Init( &MD5context );
|
|
lutil_MD5Update( &MD5context,
|
|
(const unsigned char *) passwd->bv_val, passwd->bv_len );
|
|
lutil_MD5Final( MD5digest, &MD5context );
|
|
|
|
return lutil_passwd_string64( scheme, &digest, hash, NULL );
|
|
;
|
|
}
|
|
|
|
#ifdef SLAPD_CRYPT
|
|
static int hash_crypt(
|
|
const struct berval *scheme,
|
|
const struct berval *passwd,
|
|
struct berval *hash,
|
|
const char **text )
|
|
{
|
|
unsigned char salt[32]; /* salt suitable for most anything */
|
|
unsigned int i;
|
|
char *save;
|
|
int rc;
|
|
|
|
for( i=0; i<passwd->bv_len; i++) {
|
|
if(passwd->bv_val[i] == '\0') {
|
|
return LUTIL_PASSWD_ERR; /* NUL character in password */
|
|
}
|
|
}
|
|
|
|
if( passwd->bv_val[i] != '\0' ) {
|
|
return LUTIL_PASSWD_ERR; /* passwd must behave like a string */
|
|
}
|
|
|
|
if( lutil_entropy( salt, sizeof( salt ) ) < 0 ) {
|
|
return LUTIL_PASSWD_ERR;
|
|
}
|
|
|
|
for( i=0; i< ( sizeof(salt) - 1 ); i++ ) {
|
|
salt[i] = crypt64[ salt[i] % (sizeof(crypt64)-1) ];
|
|
}
|
|
salt[sizeof( salt ) - 1 ] = '\0';
|
|
|
|
if( salt_format != NULL ) {
|
|
/* copy the salt we made into entropy before snprintfing
|
|
it back into the salt */
|
|
char entropy[sizeof(salt)];
|
|
strcpy( entropy, (char *) salt );
|
|
snprintf( (char *) salt, sizeof(entropy), salt_format, entropy );
|
|
}
|
|
|
|
rc = lutil_cryptptr( passwd->bv_val, (char *) salt, &hash->bv_val );
|
|
if ( rc != LUTIL_PASSWD_OK ) return rc;
|
|
|
|
if( hash->bv_val == NULL ) return -1;
|
|
|
|
hash->bv_len = strlen( hash->bv_val );
|
|
|
|
save = hash->bv_val;
|
|
|
|
if( hash->bv_len == 0 ) {
|
|
rc = LUTIL_PASSWD_ERR;
|
|
} else {
|
|
rc = pw_string( scheme, hash );
|
|
}
|
|
ber_memfree( save );
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
int lutil_salt_format(const char *format)
|
|
{
|
|
#ifdef SLAPD_CRYPT
|
|
ber_memfree( salt_format );
|
|
|
|
salt_format = format != NULL ? ber_strdup( format ) : NULL;
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef SLAPD_CLEARTEXT
|
|
static int hash_clear(
|
|
const struct berval *scheme,
|
|
const struct berval *passwd,
|
|
struct berval *hash,
|
|
const char **text )
|
|
{
|
|
ber_dupbv( hash, (struct berval *)passwd );
|
|
return LUTIL_PASSWD_OK;
|
|
}
|
|
#endif
|
|
|