+/* $OpenLDAP$ */
/*
- * lutil_password(credentials, password)
+ * Copyright 1998-1999 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 matches
- * the stored password.
+ * 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 char *cred,
- const char *passwd)
+ const struct berval *passwd, /* stored passwd */
+ const struct berval *cred, /* user cred */
+ const char **schemes )
{
+ int i;
- if (cred == NULL || passwd == NULL) {
+ if (cred == NULL || cred->bv_len == 0 ||
+ passwd == NULL || passwd->bv_len == 0 )
+ {
return -1;
}
- if (strncasecmp(passwd, "{MD5}", sizeof("{MD5}") - 1) == 0 ) {
- lutil_MD5_CTX MD5context;
- unsigned char MD5digest[16];
- char base64digest[25]; /* ceiling(sizeof(input)/3) * 4 + 1 */
-
- const char *p = passwd + (sizeof("{MD5}") - 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 );
- lutil_MD5Init(&MD5context);
- lutil_MD5Update(&MD5context,
- (const unsigned char *)cred, strlen(cred));
- lutil_MD5Final(MD5digest, &MD5context);
+ if( p != NULL ) {
+ int rc = (pw_schemes[i].chk_fn)( &pw_schemes[i], p, cred );
- if ( lutil_b64_ntop(MD5digest, sizeof(MD5digest),
- base64digest, sizeof(base64digest)) < 0)
- {
- return ( 1 );
+ /* 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;
+ }
+#else
+ return 1;
+#endif
+
+}
- return( strcmp(p, base64digest) );
+struct berval * lutil_passwd_generate( ber_len_t len )
+{
+ struct berval *pw;
- } else if (strncasecmp(passwd, "{SHA}",sizeof("{SHA}") - 1) == 0 ) {
- lutil_SHA1_CTX SHA1context;
- unsigned char SHA1digest[20];
- char base64digest[29]; /* ceiling(sizeof(input)/3) * 4 + 1 */
- const char *p = passwd + (sizeof("{SHA}") - 1);
+ if( len < 1 ) return NULL;
- lutil_SHA1Init(&SHA1context);
- lutil_SHA1Update(&SHA1context,
- (const unsigned char *) cred, strlen(cred));
- lutil_SHA1Final(SHA1digest, &SHA1context);
+ pw = ber_memalloc( sizeof( struct berval ) );
+ if( pw == NULL ) return NULL;
- if (lutil_b64_ntop(SHA1digest, sizeof(SHA1digest),
- base64digest, sizeof(base64digest)) < 0)
- {
- return ( 1 );
+ 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;
+ }
+
+ memcpy( pw->bv_val, sc->name.bv_val, sc->name.bv_len );
+ 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;
}
- return( strcmp(p, base64digest) );
+ memcpy( string.bv_val, hash->bv_val,
+ hash->bv_len );
+ memcpy( &string.bv_val[hash->bv_len], salt->bv_val,
+ salt->bv_len );
+ string.bv_val[string.bv_len] = '\0';
+
+ } else {
+ string = *hash;
+ }
- } else if (strncasecmp(passwd, "{SSHA}", sizeof("{SSHA}") - 1) == 0) {
- lutil_SHA1_CTX SHA1context;
- unsigned char SHA1digest[20];
- const char *p = passwd + (sizeof("{SSHA}") - 1);
- int pw_len = strlen(p);
- int rc;
- unsigned char *orig_pass = NULL;
+ 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;
+ }
+
+ 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;
- /* base64 un-encode password */
- orig_pass = (unsigned char *)malloc((size_t)(pw_len * 0.75 + 1));
- if ((rc = lutil_b64_pton(p, orig_pass, pw_len)) < 0)
- {
- free(orig_pass);
- return ( 1 );
- }
+ /* 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, strlen(cred));
- lutil_SHA1Update(&SHA1context,
- (const unsigned char *) orig_pass + sizeof(SHA1digest),
- rc - sizeof(SHA1digest));
- lutil_SHA1Final(SHA1digest, &SHA1context);
+ /* 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));
- free(orig_pass);
- return(rc);
-
- } else if (strncasecmp(passwd, "{SMD5}", sizeof("{SMD5}") - 1) == 0) {
- lutil_MD5_CTX MD5context;
- unsigned char MD5digest[16];
- const char *p = passwd + (sizeof("{SMD5}") - 1);
- int pw_len = strlen(p);
- int rc;
- unsigned char *orig_pass = NULL;
-
- /* base64 un-encode password */
- orig_pass = (unsigned char *)malloc((size_t)(pw_len * 0.75 + 1));
- if ((rc = lutil_b64_pton(p, orig_pass, pw_len)) < 0)
+ /* 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;
+ }
+
{
- free(orig_pass);
- return ( 1 );
+ char host[MAXHOSTNAMELEN];
+
+ if( gethostname( host, MAXHOSTNAMELEN ) != 0 ) {
+ krb5_free_principal( context, client );
+ krb5_free_context( context );
+ return 1;
+ }
+
+ ret = krb5_sname_to_principal( context,
+ host, "ldap", KRB5_NT_SRV_HST, &server );
}
- /* hash credentials with salt */
- lutil_MD5Init(&MD5context);
- lutil_MD5Update(&MD5context,
- (const unsigned char *) cred, strlen(cred));
- lutil_MD5Update(&MD5context,
- (const unsigned char *) orig_pass + sizeof(MD5digest),
- rc - sizeof(MD5digest));
- lutil_MD5Final(MD5digest, &MD5context);
+ if (ret) {
+ krb5_free_principal( context, client );
+ krb5_free_context( context );
+ return 1;
+ }
- /* compare */
- rc = memcmp((char *)orig_pass, (char *)MD5digest, sizeof(MD5digest));
- free(orig_pass);
- return ( rc );
+ ret = krb5_verify_init_creds( context,
+ &creds, server, NULL, NULL, &verify_options );
-#ifdef SLAPD_CRYPT
- } else if (strncasecmp(passwd, "{CRYPT}", sizeof("{CRYPT}") - 1) == 0 ) {
- const char *p = passwd + (sizeof("{CRYPT}") - 1);
+ krb5_free_principal( context, client );
+ krb5_free_principal( context, server );
+ krb5_free_creds_contents( context, &creds );
+ krb5_free_context( context );
- return( strcmp(p, crypt(cred, p)) );
+ 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 */
+ }
}
-#ifdef SLAPD_CLEARTEXT
- return( strcmp(passwd, cred) );
-#else
- return( 1 );
+ 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[20];
+ 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[16];
+ 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[16];
+
+ 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