openldap/libraries/liblutil/passwd.c
Kurt Zeilenga 3b03b64b77 Add char* ldap_pvt_get_fqdn(char*) which returns the FQDN of the
input.  In input==NULL, returns FQDN of local host.
Fixed copy_hostent() uninitialized pointer bug.
Replaced gethostname calls with ldap_pvt_get_fqdn( NULL ) calls.
2000-08-15 01:55:43 +00:00

1050 lines
23 KiB
C

/* $OpenLDAP$ */
/*
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
/*
* int lutil_passwd(
* const struct berval *passwd,
* const struct berval *cred,
* const char **schemes )
*
* Returns true if user supplied credentials (cred) matches
* the stored password (passwd).
*
* Due to the use of the crypt(3) function
* this routine is NOT thread-safe.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/stdlib.h>
#include <ac/string.h>
#ifdef SLAPD_SPASSWD
# include <sasl.h>
#endif
#ifdef SLAPD_KPASSWD
# include <ac/krb.h>
# include <ac/krb5.h>
#endif
#include <ac/param.h>
#include <ac/unistd.h>
#include <ac/crypt.h>
#ifdef HAVE_SHADOW_H
# include <shadow.h>
#endif
#ifdef HAVE_PWD_H
# include <pwd.h>
#endif
#ifdef HAVE_AIX_SECURITY
# include <userpw.h>
#endif
#include <lber.h>
#include "lutil_md5.h"
#include "lutil_sha1.h"
#include "lutil.h"
static const unsigned char crypt64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890./";
struct pw_scheme;
typedef int (*PASSWD_CHK_FUNC)(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
typedef struct berval * (*PASSWD_HASH_FUNC) (
const struct pw_scheme *scheme,
const struct berval *passwd );
struct pw_scheme {
struct berval name;
PASSWD_CHK_FUNC chk_fn;
PASSWD_HASH_FUNC hash_fn;
};
/* password check routines */
static int chk_md5(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
static int chk_smd5(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
static int chk_ssha1(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
static int chk_sha1(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
#ifdef SLAPD_SPASSWD
static int chk_sasl(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
#endif
#ifdef SLAPD_KPASSWD
static int chk_kerberos(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
#endif
#ifdef SLAPD_CRYPT
static int chk_crypt(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
#if defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD )
static int chk_unix(
const struct pw_scheme *scheme,
const struct berval *passwd,
const struct berval *cred );
#endif
#endif
/* password hash routines */
static struct berval *hash_sha1(
const struct pw_scheme *scheme,
const struct berval *passwd );
static struct berval *hash_ssha1(
const struct pw_scheme *scheme,
const struct berval *passwd );
static struct berval *hash_smd5(
const struct pw_scheme *scheme,
const struct berval *passwd );
static struct berval *hash_md5(
const struct pw_scheme *scheme,
const struct berval *passwd );
#ifdef SLAPD_CRYPT
static struct berval *hash_crypt(
const struct pw_scheme *scheme,
const struct berval *passwd );
#endif
static const struct pw_scheme pw_schemes[] =
{
{ {sizeof("{SSHA}")-1, "{SSHA}"}, chk_ssha1, hash_ssha1 },
{ {sizeof("{SHA}")-1, "{SHA}"}, chk_sha1, hash_sha1 },
{ {sizeof("{SMD5}")-1, "{SMD5}"}, chk_smd5, hash_smd5 },
{ {sizeof("{MD5}")-1, "{MD5}"}, chk_md5, hash_md5 },
#ifdef SLAPD_SPASSWD
{ {sizeof("{SASL}")-1, "{SASL}"}, chk_sasl, NULL },
#endif
#ifdef SLAPD_KPASSWD
{ {sizeof("{KERBEROS}")-1, "{KERBEROS}"}, chk_kerberos, NULL },
#endif
#ifdef SLAPD_CRYPT
{ {sizeof("{CRYPT}")-1, "{CRYPT}"}, chk_crypt, hash_crypt },
# if defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD )
{ {sizeof("{UNIX}")-1, "{UNIX}"}, chk_unix, NULL },
# endif
#endif
#ifdef SLAPD_CLEARTEXT
/* psuedo scheme */
{ {0, "{CLEARTEXT}"}, NULL, NULL },
#endif
{ {0, NULL}, NULL, NULL }
};
static const struct pw_scheme *get_scheme(
const char* scheme )
{
int i;
for( i=0; pw_schemes[i].name.bv_val; i++) {
if( pw_schemes[i].name.bv_len == 0 ) continue;
if( strncasecmp(scheme, pw_schemes[i].name.bv_val,
pw_schemes[i].name.bv_len) == 0 )
{
return &pw_schemes[i];
}
}
return NULL;
}
int lutil_passwd_scheme(
const char* scheme )
{
if( scheme == NULL ) {
return 0;
}
return get_scheme(scheme) != NULL;
}
static int is_allowed_scheme(
const char* scheme,
const char** schemes )
{
int i;
if( schemes == NULL ) return 1;
for( i=0; schemes[i] != NULL; i++ ) {
if( strcasecmp( scheme, schemes[i] ) == 0 ) {
return 1;
}
}
return 0;
}
static struct berval *passwd_scheme(
const struct pw_scheme *scheme,
const struct berval * passwd,
const char** allowed )
{
if( !is_allowed_scheme( scheme->name.bv_val, allowed ) ) {
return NULL;
}
if( passwd->bv_len >= scheme->name.bv_len ) {
if( strncasecmp( passwd->bv_val, scheme->name.bv_val, scheme->name.bv_len ) == 0 ) {
struct berval *bv = ber_memalloc( sizeof(struct berval) );
if( bv == NULL ) return NULL;
bv->bv_val = &passwd->bv_val[scheme->name.bv_len];
bv->bv_len = passwd->bv_len - scheme->name.bv_len;
return bv;
}
}
return NULL;
}
/*
* Return 0 if creds are good.
*/
int
lutil_passwd(
const struct berval *passwd, /* stored passwd */
const struct berval *cred, /* user cred */
const char **schemes )
{
int i;
if (cred == NULL || cred->bv_len == 0 ||
passwd == NULL || passwd->bv_len == 0 )
{
return -1;
}
for( i=0; pw_schemes[i].name.bv_val != NULL; i++ ) {
if( pw_schemes[i].chk_fn ) {
struct berval *p = passwd_scheme( &pw_schemes[i],
passwd, schemes );
if( p != NULL ) {
int rc = (pw_schemes[i].chk_fn)( &pw_schemes[i], p, cred );
/* only free the berval structure as the bv_val points
* into passwd->bv_val
*/
ber_memfree( p );
return rc;
}
}
}
#ifdef SLAPD_CLEARTEXT
if( is_allowed_scheme("{CLEARTEXT}", schemes ) ) {
return passwd->bv_len == cred->bv_len
? memcmp( passwd->bv_val, cred->bv_val, passwd->bv_len )
: 1;
}
#endif
return 1;
}
struct berval * lutil_passwd_generate( ber_len_t len )
{
struct berval *pw;
if( len < 1 ) return NULL;
pw = ber_memalloc( sizeof( struct berval ) );
if( pw == NULL ) return NULL;
pw->bv_len = len;
pw->bv_val = ber_memalloc( len + 1 );
if( pw->bv_val == NULL ) {
ber_memfree( pw );
return NULL;
}
if( lutil_entropy( pw->bv_val, pw->bv_len) < 0 ) {
ber_bvfree( pw );
return NULL;
}
for( len = 0; len < pw->bv_len; len++ ) {
pw->bv_val[len] = crypt64[
pw->bv_val[len] % (sizeof(crypt64)-1) ];
}
pw->bv_val[len] = '\0';
return pw;
}
struct berval * lutil_passwd_hash(
const struct berval * passwd,
const char * method )
{
const struct pw_scheme *sc = get_scheme( method );
if( sc == NULL ) return NULL;
if( ! sc->hash_fn ) return NULL;
return (sc->hash_fn)( sc, passwd );
}
static struct berval * pw_string(
const struct pw_scheme *sc,
const struct berval *passwd )
{
struct berval *pw = ber_memalloc( sizeof( struct berval ) );
if( pw == NULL ) return NULL;
pw->bv_len = sc->name.bv_len + passwd->bv_len;
pw->bv_val = ber_memalloc( pw->bv_len + 1 );
if( pw->bv_val == NULL ) {
ber_memfree( pw );
return NULL;
}
AC_MEMCPY( pw->bv_val, sc->name.bv_val, sc->name.bv_len );
AC_MEMCPY( &pw->bv_val[sc->name.bv_len], passwd->bv_val, passwd->bv_len );
pw->bv_val[pw->bv_len] = '\0';
return pw;
}
static struct berval * pw_string64(
const struct pw_scheme *sc,
const struct berval *hash,
const struct berval *salt )
{
int rc;
struct berval string;
struct berval *b64 = ber_memalloc( sizeof(struct berval) );
size_t b64len;
if( b64 == NULL ) return NULL;
if( salt ) {
/* need to base64 combined string */
string.bv_len = hash->bv_len + salt->bv_len;
string.bv_val = ber_memalloc( string.bv_len + 1 );
if( string.bv_val == NULL ) {
ber_memfree( b64 );
return NULL;
}
AC_MEMCPY( string.bv_val, hash->bv_val,
hash->bv_len );
AC_MEMCPY( &string.bv_val[hash->bv_len], salt->bv_val,
salt->bv_len );
string.bv_val[string.bv_len] = '\0';
} else {
string = *hash;
}
b64len = LUTIL_BASE64_ENCODE_LEN( string.bv_len ) + 1;
b64->bv_len = b64len + sc->name.bv_len;
b64->bv_val = ber_memalloc( b64->bv_len + 1 );
if( b64->bv_val == NULL ) {
if( salt ) ber_memfree( string.bv_val );
ber_memfree( b64 );
return NULL;
}
AC_MEMCPY(b64->bv_val, sc->name.bv_val, sc->name.bv_len);
rc = lutil_b64_ntop(
string.bv_val, string.bv_len,
&b64->bv_val[sc->name.bv_len], b64len );
if( salt ) ber_memfree( string.bv_val );
if( rc < 0 ) {
ber_bvfree( b64 );
return NULL;
}
/* recompute length */
b64->bv_len = sc->name.bv_len + rc;
assert( strlen(b64->bv_val) == b64->bv_len );
return b64;
}
/* PASSWORD CHECK ROUTINES */
static int chk_ssha1(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
lutil_SHA1_CTX SHA1context;
unsigned char SHA1digest[LUTIL_SHA1_BYTES];
int rc;
unsigned char *orig_pass = NULL;
/* decode base64 password */
orig_pass = (unsigned char *) ber_memalloc( (size_t) (
LUTIL_BASE64_DECODE_LEN(passwd->bv_len) + 1) );
if( orig_pass == NULL ) return -1;
rc = lutil_b64_pton(passwd->bv_val, orig_pass, passwd->bv_len);
if(rc < 0) {
ber_memfree(orig_pass);
return -1;
}
/* hash credentials with salt */
lutil_SHA1Init(&SHA1context);
lutil_SHA1Update(&SHA1context,
(const unsigned char *) cred->bv_val, cred->bv_len);
lutil_SHA1Update(&SHA1context,
(const unsigned char *) &orig_pass[sizeof(SHA1digest)],
rc - sizeof(SHA1digest));
lutil_SHA1Final(SHA1digest, &SHA1context);
/* compare */
rc = memcmp((char *)orig_pass, (char *)SHA1digest, sizeof(SHA1digest));
ber_memfree(orig_pass);
return rc ? 1 : 0;
}
static int chk_sha1(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
lutil_SHA1_CTX SHA1context;
unsigned char SHA1digest[LUTIL_SHA1_BYTES];
int rc;
unsigned char *orig_pass = NULL;
/* base64 un-encode password */
orig_pass = (unsigned char *) ber_memalloc( (size_t) (
LUTIL_BASE64_DECODE_LEN(passwd->bv_len) + 1) );
if( orig_pass == NULL ) return -1;
rc = lutil_b64_pton(passwd->bv_val, orig_pass, passwd->bv_len);
if( rc != sizeof(SHA1digest) ) {
ber_memfree(orig_pass);
return -1;
}
/* hash credentials with salt */
lutil_SHA1Init(&SHA1context);
lutil_SHA1Update(&SHA1context,
(const unsigned char *) cred->bv_val, cred->bv_len);
lutil_SHA1Final(SHA1digest, &SHA1context);
/* compare */
rc = memcmp((char *)orig_pass, (char *)SHA1digest, sizeof(SHA1digest));
ber_memfree(orig_pass);
return rc ? 1 : 0;
}
static int chk_smd5(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
lutil_MD5_CTX MD5context;
unsigned char MD5digest[LUTIL_MD5_BYTES];
int rc;
unsigned char *orig_pass = NULL;
/* base64 un-encode password */
orig_pass = (unsigned char *) ber_memalloc( (size_t) (
LUTIL_BASE64_DECODE_LEN(passwd->bv_len) + 1) );
if( orig_pass == NULL ) return -1;
rc = lutil_b64_pton(passwd->bv_val, orig_pass, passwd->bv_len);
if ( rc < 0 ) {
ber_memfree(orig_pass);
return -1;
}
/* hash credentials with salt */
lutil_MD5Init(&MD5context);
lutil_MD5Update(&MD5context,
(const unsigned char *) cred->bv_val, cred->bv_len );
lutil_MD5Update(&MD5context,
(const unsigned char *) &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 ? 1 : 0;
}
static int chk_md5(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
lutil_MD5_CTX MD5context;
unsigned char MD5digest[LUTIL_MD5_BYTES];
int rc;
unsigned char *orig_pass = NULL;
/* base64 un-encode password */
orig_pass = (unsigned char *) ber_memalloc( (size_t) (
LUTIL_BASE64_DECODE_LEN(passwd->bv_len) + 1) );
if( orig_pass == NULL ) return -1;
rc = lutil_b64_pton(passwd->bv_val, orig_pass, passwd->bv_len);
if ( rc != sizeof(MD5digest) ) {
ber_memfree(orig_pass);
return -1;
}
/* 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 ? 1 : 0;
}
#ifdef SLAPD_SPASSWD
#ifdef HAVE_CYRUS_SASL
sasl_conn_t *lutil_passwd_sasl_conn = NULL;
#endif
static int chk_sasl(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
int i;
int rtn;
for( i=0; i<cred->bv_len; i++) {
if(cred->bv_val[i] == '\0') {
return 1; /* NUL character in password */
}
}
if( cred->bv_val[i] != '\0' ) {
return 1; /* cred must behave like a string */
}
for( i=0; i<passwd->bv_len; i++) {
if(passwd->bv_val[i] == '\0') {
return 1; /* NUL character in password */
}
}
if( passwd->bv_val[i] != '\0' ) {
return 1; /* passwd must behave like a string */
}
rtn = 1;
#ifdef HAVE_CYRUS_SASL
if( lutil_passwd_sasl_conn != NULL ) {
const char *errstr = NULL;
int sc;
sc = sasl_checkpass( lutil_passwd_sasl_conn,
passwd->bv_val, passwd->bv_len,
cred->bv_val, cred->bv_len,
&errstr );
rtn = ( sc != SASL_OK );
}
#endif
return rtn;
}
#endif
#ifdef SLAPD_KPASSWD
static int chk_kerberos(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
int i;
int rtn;
for( i=0; i<cred->bv_len; i++) {
if(cred->bv_val[i] == '\0') {
return 1; /* NUL character in password */
}
}
if( cred->bv_val[i] != '\0' ) {
return 1; /* cred must behave like a string */
}
for( i=0; i<passwd->bv_len; i++) {
if(passwd->bv_val[i] == '\0') {
return 1; /* NUL character in password */
}
}
if( passwd->bv_val[i] != '\0' ) {
return 1; /* passwd must behave like a string */
}
rtn = 1;
#ifdef HAVE_KRB5 /* HAVE_HEIMDAL_KRB5 */
{
/* Portions:
* Copyright (c) 1997, 1998, 1999 Kungliga Tekniska H\xf6gskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*/
krb5_context context;
krb5_error_code ret;
krb5_creds creds;
krb5_get_init_creds_opt get_options;
krb5_verify_init_creds_opt verify_options;
krb5_principal client, server;
#ifdef notdef
krb5_preauthtype pre_auth_types[] = {KRB5_PADATA_ENC_TIMESTAMP};
#endif
ret = krb5_init_context( &context );
if (ret) {
return 1;
}
#ifdef notdef
krb5_get_init_creds_opt_set_preauth_list(&get_options,
pre_auth_types, 1);
#endif
krb5_get_init_creds_opt_init( &get_options );
krb5_verify_init_creds_opt_init( &verify_options );
ret = krb5_parse_name( context, passwd->bv_val, &client );
if (ret) {
krb5_free_context( context );
return 1;
}
ret = krb5_get_init_creds_password( context,
&creds, client, cred->bv_val, NULL,
NULL, 0, NULL, &get_options );
if (ret) {
krb5_free_principal( context, client );
krb5_free_context( context );
return 1;
}
{
char *host = ldap_pvt_get_fqdn( NULL );
if( host == NULL ) {
krb5_free_principal( context, client );
krb5_free_context( context );
return 1;
}
ret = krb5_sname_to_principal( context,
host, "ldap", KRB5_NT_SRV_HST, &server );
ber_memfree( host );
}
if (ret) {
krb5_free_principal( context, client );
krb5_free_context( context );
return 1;
}
ret = krb5_verify_init_creds( context,
&creds, server, NULL, NULL, &verify_options );
krb5_free_principal( context, client );
krb5_free_principal( context, server );
krb5_free_creds_contents( context, &creds );
krb5_free_context( context );
rtn = !!ret;
}
#elif defined(HAVE_KRB4)
{
/* Borrowed from Heimdal kpopper */
/* Portions:
* Copyright (c) 1989 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
int status;
char lrealm[REALM_SZ];
char tkt[MAXHOSTNAMELEN];
status = krb_get_lrealm(lrealm,1);
if (status == KFAILURE) {
return 1;
}
snprintf(tkt, sizeof(tkt), "%s_slapd.%u",
TKT_ROOT, (unsigned)getpid());
krb_set_tkt_string (tkt);
status = krb_verify_user( passwd->bv_val, "", lrealm,
cred->bv_val, 1, "ldap");
dest_tkt(); /* no point in keeping the tickets */
return status == KFAILURE;
}
#endif
return rtn;
}
#endif /* SLAPD_KPASSWD */
#ifdef SLAPD_CRYPT
static int chk_crypt(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
char *cr;
int i;
for( i=0; i<cred->bv_len; i++) {
if(cred->bv_val[i] == '\0') {
return 1; /* NUL character in password */
}
}
if( cred->bv_val[i] != '\0' ) {
return -1; /* cred must behave like a string */
}
if( passwd->bv_len < 2 ) {
return -1; /* passwd must be at least two characters long */
}
for( i=0; i<passwd->bv_len; i++) {
if(passwd->bv_val[i] == '\0') {
return -1; /* NUL character in password */
}
}
if( passwd->bv_val[i] != '\0' ) {
return -1; /* passwd must behave like a string */
}
cr = crypt( cred->bv_val, passwd->bv_val );
if( cr == NULL || cr[0] == '\0' ) {
/* salt must have been invalid */
return -1;
}
return strcmp( passwd->bv_val, cr ) ? 1 : 0;
}
# if defined( HAVE_GETPWNAM ) && defined( HAVE_PW_PASSWD )
static int chk_unix(
const struct pw_scheme *sc,
const struct berval * passwd,
const struct berval * cred )
{
int i;
char *pw,*cr;
for( i=0; i<cred->bv_len; i++) {
if(cred->bv_val[i] == '\0') {
return -1; /* NUL character in password */
}
}
if( cred->bv_val[i] != '\0' ) {
return -1; /* cred must behave like a string */
}
for( i=0; i<passwd->bv_len; i++) {
if(passwd->bv_val[i] == '\0') {
return -1; /* NUL character in password */
}
}
if( passwd->bv_val[i] != '\0' ) {
return -1; /* passwd must behave like a string */
}
{
struct passwd *pwd = getpwnam(passwd->bv_val);
if(pwd == NULL) {
return -1; /* 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 -1;
}
cr = crypt(cred->bv_val, pw);
if( cr == NULL || cr[0] == '\0' ) {
/* salt must have been invalid */
return -1;
}
return strcmp(pw, cr) ? 1 : 0;
}
# endif
#endif
/* PASSWORD GENERATION ROUTINES */
static struct berval *hash_ssha1(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
lutil_SHA1_CTX SHA1context;
unsigned char SHA1digest[LUTIL_SHA1_BYTES];
unsigned char saltdata[4];
struct berval digest;
struct berval salt;
digest.bv_val = SHA1digest;
digest.bv_len = sizeof(SHA1digest);
salt.bv_val = saltdata;
salt.bv_len = sizeof(saltdata);
if( lutil_entropy( salt.bv_val, salt.bv_len) < 0 ) {
return NULL;
}
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 pw_string64( scheme, &digest, &salt);
}
static struct berval *hash_sha1(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
lutil_SHA1_CTX SHA1context;
unsigned char SHA1digest[LUTIL_SHA1_BYTES];
struct berval digest;
digest.bv_val = 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 pw_string64( scheme, &digest, NULL);
}
static struct berval *hash_smd5(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
lutil_MD5_CTX MD5context;
unsigned char MD5digest[LUTIL_MD5_BYTES];
unsigned char saltdata[4];
struct berval digest;
struct berval salt;
digest.bv_val = MD5digest;
digest.bv_len = sizeof(MD5digest);
salt.bv_val = saltdata;
salt.bv_len = sizeof(saltdata);
if( lutil_entropy( salt.bv_val, salt.bv_len) < 0 ) {
return NULL;
}
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 pw_string64( scheme, &digest, &salt );
}
static struct berval *hash_md5(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
lutil_MD5_CTX MD5context;
unsigned char MD5digest[LUTIL_MD5_BYTES];
struct berval digest;
digest.bv_val = 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 pw_string64( scheme, &digest, NULL );
;
}
#ifdef SLAPD_CRYPT
static struct berval *hash_crypt(
const struct pw_scheme *scheme,
const struct berval *passwd )
{
struct berval hash;
unsigned char salt[3];
int i;
for( i=0; i<passwd->bv_len; i++) {
if(passwd->bv_val[i] == '\0') {
return NULL; /* NUL character in password */
}
}
if( passwd->bv_val[i] != '\0' ) {
return NULL; /* passwd must behave like a string */
}
if( lutil_entropy( salt, sizeof(salt)) < 0 ) {
return NULL;
}
salt[0] = crypt64[ salt[0] % (sizeof(crypt64)-1) ];
salt[1] = crypt64[ salt[1] % (sizeof(crypt64)-1) ];
salt[2] = '\0';
hash.bv_val = crypt( passwd->bv_val, salt );
if( hash.bv_val == NULL ) return NULL;
hash.bv_len = strlen( hash.bv_val );
if( hash.bv_len == 0 ) {
return NULL;
}
return pw_string( scheme, &hash );
}
#endif