-/* bind.c - ldbm backend bind and unbind routines */
+/* passwd.c - password extended operation routines */
/* $OpenLDAP$ */
-/*
- * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
- * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2005 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
*/
#include "portable.h"
#include "slap.h"
+#include <lber_pvt.h>
#include <lutil.h>
+static const char *defhash[] = {
+#ifdef LUTIL_SHA1_BYTES
+ "{SSHA}",
+#else
+ "{SMD5}",
+#endif
+ NULL
+};
+
+int passwd_extop(
+ Operation *op,
+ SlapReply *rs )
+{
+ struct berval id = {0, NULL}, hash, *rsp = NULL;
+ req_pwdexop_s *qpw = &op->oq_pwdexop;
+ Modifications *ml;
+ Operation op2;
+ slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
+ slap_callback cb2 = { NULL, slap_replog_cb, NULL, NULL };
+ int i, nhash;
+ char **hashes;
+
+ cb2.sc_next = &cb;
+
+ assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) == 0 );
+
+ if( op->o_dn.bv_len == 0 ) {
+ rs->sr_text = "only authenticated users may change passwords";
+ return LDAP_STRONG_AUTH_REQUIRED;
+ }
+
+ qpw->rs_old.bv_val = NULL;
+ qpw->rs_new.bv_val = NULL;
+ qpw->rs_mods = NULL;
+ qpw->rs_modtail = NULL;
+
+ rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id, &qpw->rs_old,
+ &qpw->rs_new, &rs->sr_text );
+
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ return rs->sr_err;
+ }
+
+ if ( id.bv_len ) {
+ op->o_req_dn = id;
+ /* ndn is in tmpmem, so we don't need to free it */
+ rs->sr_err = dnNormalize( 0, NULL, NULL, &id, &op->o_req_ndn, op->o_tmpmemctx );
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ rs->sr_text = "Invalid DN";
+ return rs->sr_err;
+ }
+ op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
+ } else {
+ op->o_req_dn = op->o_dn;
+ op->o_req_ndn = op->o_ndn;
+ ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
+ op->o_bd = op->o_conn->c_authz_backend;
+ ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
+ }
+
+ if( op->o_bd == NULL ) {
+#ifdef HAVE_CYRUS_SASL
+ return slap_sasl_setpass( op, rs );
+#else
+ rs->sr_text = "no authz backend";
+ return LDAP_OTHER;
+#endif
+ }
+
+ if ( op->o_req_ndn.bv_len == 0 ) {
+ rs->sr_text = "no password is associated with the Root DSE";
+ return LDAP_UNWILLING_TO_PERFORM;
+ }
+
+ if (backend_check_restrictions( op, rs,
+ (struct berval *)&slap_EXOP_MODIFY_PASSWD ) != LDAP_SUCCESS) {
+ return rs->sr_err;
+ }
+
+
+#ifndef SLAPD_MULTIMASTER
+ /* This does not apply to multi-master case */
+ if(!( !SLAP_SHADOW( op->o_bd ) || be_isupdate( op ))) {
+ /* we SHOULD return a referral in this case */
+ BerVarray defref = op->o_bd->be_update_refs
+ ? op->o_bd->be_update_refs : default_referral;
+
+ if( defref != NULL ) {
+ rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
+ NULL, NULL, LDAP_SCOPE_DEFAULT );
+ if(rs->sr_ref) {
+ rs->sr_flags |= REP_REF_MUSTBEFREED;
+ } else {
+ rs->sr_ref = defref;
+ }
+ return LDAP_REFERRAL;
+
+ }
+
+ rs->sr_text = "shadow context; no update referral";
+ return LDAP_UNWILLING_TO_PERFORM;
+ }
+#endif /* !SLAPD_MULTIMASTER */
+
+ /* generate a new password if none was provided */
+ if ( qpw->rs_new.bv_len == 0 ) {
+ slap_passwd_generate( &qpw->rs_new );
+ if ( qpw->rs_new.bv_len ) {
+ rsp = slap_passwd_return( &qpw->rs_new );
+ }
+ }
+ if ( qpw->rs_new.bv_len == 0 ) {
+ rs->sr_text = "password generation failed";
+ return LDAP_OTHER;
+ }
+
+ /* Give the backend a chance to handle this itself */
+ if ( op->o_bd->be_extended ) {
+ rs->sr_err = op->o_bd->be_extended( op, rs );
+ if ( rs->sr_err != LDAP_UNWILLING_TO_PERFORM &&
+ rs->sr_err != SLAP_CB_CONTINUE ) {
+ return rs->sr_err;
+ }
+ }
+
+ /* The backend didn't handle it, so try it here */
+ if( op->o_bd && !op->o_bd->be_modify ) {
+ rs->sr_text = "operation not supported for current user";
+ return LDAP_UNWILLING_TO_PERFORM;
+ }
+
+ ml = ch_malloc( sizeof(Modifications) );
+ if ( !qpw->rs_modtail ) qpw->rs_modtail = &ml->sml_next;
+
+ if ( default_passwd_hash ) {
+ for ( nhash = 0; default_passwd_hash[nhash]; nhash++ );
+ hashes = default_passwd_hash;
+ } else {
+ nhash = 1;
+ hashes = (char **)defhash;
+ }
+ ml->sml_values = ch_malloc( (nhash+1)*sizeof(struct berval) );
+ for ( i=0; hashes[i]; i++ ) {
+ slap_passwd_hash_type( &qpw->rs_new, &hash, hashes[i], &rs->sr_text );
+ if ( hash.bv_len == 0 ) {
+ if ( !rs->sr_text ) {
+ rs->sr_text = "password hash failed";
+ }
+ break;
+ }
+ ml->sml_values[i] = hash;
+ }
+ ml->sml_values[i].bv_val = NULL;
+ ml->sml_nvalues = NULL;
+ ml->sml_desc = slap_schema.si_ad_userPassword;
+ ml->sml_op = LDAP_MOD_REPLACE;
+ ml->sml_next = qpw->rs_mods;
+ qpw->rs_mods = ml;
+
+ if ( hashes[i] ) {
+ rs->sr_err = LDAP_OTHER;
+ } else {
+
+ op2 = *op;
+ op2.o_tag = LDAP_REQ_MODIFY;
+ op2.o_callback = &cb2;
+ op2.orm_modlist = qpw->rs_mods;
+ cb2.sc_private = qpw; /* let Modify know this was pwdMod,
+ * if it cares... */
+
+ rs->sr_err = slap_mods_opattrs( &op2, ml, qpw->rs_modtail, &rs->sr_text,
+ NULL, 0, 1 );
+
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ rs->sr_err = op2.o_bd->be_modify( &op2, rs );
+ }
+ if ( rs->sr_err == LDAP_SUCCESS ) {
+ rs->sr_rspdata = rsp;
+ } else if ( rsp ) {
+ ber_bvfree( rsp );
+ }
+ }
+ slap_mods_free( qpw->rs_mods );
+ if ( rsp ) {
+ free( qpw->rs_new.bv_val );
+ }
+
+ return rs->sr_err;
+}
+
+int slap_passwd_parse( struct berval *reqdata,
+ struct berval *id,
+ struct berval *oldpass,
+ struct berval *newpass,
+ const char **text )
+{
+ int rc = LDAP_SUCCESS;
+ ber_tag_t tag;
+ ber_len_t len = -1;
+ BerElementBuffer berbuf;
+ BerElement *ber = (BerElement *)&berbuf;
+
+ if( reqdata == NULL ) {
+ return LDAP_SUCCESS;
+ }
+
+ if( reqdata->bv_len == 0 ) {
+ *text = "empty request data field";
+ return LDAP_PROTOCOL_ERROR;
+ }
+
+ /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
+ ber_init2( ber, reqdata, 0 );
+
+ tag = ber_scanf( ber, "{" /*}*/ );
+
+ if( tag == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: decoding error\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "slap_passwd_parse: decoding error\n", 0, 0, 0 );
+#endif
+ rc = LDAP_PROTOCOL_ERROR;
+ goto done;
+ }
+
+ tag = ber_peek_tag( ber, &len );
+ if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_ID ) {
+ if( id == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: ID not allowed.\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID not allowed.\n",
+ 0, 0, 0 );
+#endif
+
+ *text = "user must change own password";
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ goto done;
+ }
+
+ tag = ber_scanf( ber, "m", id );
+
+ if( tag == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: ID parse failed.\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
+ 0, 0, 0 );
+#endif
+
+ goto decoding_error;
+ }
+
+ tag = ber_peek_tag( ber, &len);
+ }
+
+ if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_OLD ) {
+ if( oldpass == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: OLD not allowed.\n" , 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD not allowed.\n",
+ 0, 0, 0 );
+#endif
+
+ *text = "use bind to verify old password";
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ goto done;
+ }
+
+ tag = ber_scanf( ber, "m", oldpass );
+
+ if( tag == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: ID parse failed.\n" , 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
+ 0, 0, 0 );
+#endif
+
+ goto decoding_error;
+ }
+
+ tag = ber_peek_tag( ber, &len );
+ }
+
+ if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_NEW ) {
+ if( newpass == NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: NEW not allowed.\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW not allowed.\n",
+ 0, 0, 0 );
+#endif
+
+ *text = "user specified passwords disallowed";
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ goto done;
+ }
+
+ tag = ber_scanf( ber, "m", newpass );
+
+ if( tag == LBER_ERROR ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: OLD parse failed.\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD parse failed.\n",
+ 0, 0, 0 );
+#endif
+
+ goto decoding_error;
+ }
+
+ tag = ber_peek_tag( ber, &len );
+ }
+
+ if( len != 0 ) {
+decoding_error:
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ERR,
+ "slap_passwd_parse: decoding error, len=%ld\n", (long)len, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "slap_passwd_parse: decoding error, len=%ld\n",
+ (long) len, 0, 0 );
+#endif
+
+ *text = "data decoding error";
+ rc = LDAP_PROTOCOL_ERROR;
+ }
+
+done:
+ return rc;
+}
+
+struct berval * slap_passwd_return(
+ struct berval *cred )
+{
+ int rc;
+ struct berval *bv = NULL;
+ BerElementBuffer berbuf;
+ /* opaque structure, size unknown but smaller than berbuf */
+ BerElement *ber = (BerElement *)&berbuf;
+
+ assert( cred != NULL );
+
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ENTRY,
+ "slap_passwd_return: %ld\n",(long)cred->bv_len, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_return: %ld\n",
+ (long) cred->bv_len, 0, 0 );
+#endif
+
+ ber_init_w_nullc( ber, LBER_USE_DER );
+
+ rc = ber_printf( ber, "{tON}",
+ LDAP_TAG_EXOP_MODIFY_PASSWD_GEN, cred );
+
+ if( rc >= 0 ) {
+ (void) ber_flatten( ber, &bv );
+ }
+
+ ber_free_buf( ber );
+
+ return bv;
+}
int
slap_passwd_check(
+ Connection *conn,
Attribute *a,
- struct berval *cred
-)
+ struct berval *cred,
+ const char **text )
{
- int i;
- for ( i = 0; a->a_vals[i] != NULL; i++ ) {
- if ( a->a_syntax == SYNTAX_BIN ) {
- int result;
+ int result = 1;
+ struct berval *bv;
-#ifdef SLAPD_CRYPT
- ldap_pvt_thread_mutex_lock( &crypt_mutex );
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+ ldap_pvt_thread_mutex_lock( &passwd_mutex );
+#ifdef SLAPD_SPASSWD
+ lutil_passwd_sasl_conn = conn->c_sasl_authctx;
+#endif
#endif
- result = lutil_passwd(
- (char*) cred->bv_val,
- (char*) a->a_vals[i]->bv_val,
- NULL );
+ for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
+ if( !lutil_passwd( bv, cred, NULL, text ) ) {
+ result = 0;
+ break;
+ }
+ }
-#ifdef SLAPD_CRYPT
- ldap_pvt_thread_mutex_unlock( &crypt_mutex );
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+#ifdef SLAPD_SPASSWD
+ lutil_passwd_sasl_conn = NULL;
+#endif
+ ldap_pvt_thread_mutex_unlock( &passwd_mutex );
#endif
- return result;
+ return result;
+}
- } else {
- if ( value_cmp( a->a_vals[i], cred, a->a_syntax, 1 ) == 0 ) {
- return( 0 );
- }
- }
+void
+slap_passwd_generate( struct berval *pass )
+{
+#ifdef NEW_LOGGING
+ LDAP_LOG( OPERATION, ENTRY, "slap_passwd_generate: begin\n", 0, 0, 0 );
+#else
+ Debug( LDAP_DEBUG_TRACE, "slap_passwd_generate\n", 0, 0, 0 );
+#endif
+ pass->bv_val = NULL;
+ pass->bv_len = 0;
+
+ /*
+ * generate passwords of only 8 characters as some getpass(3)
+ * implementations truncate at 8 characters.
+ */
+ lutil_passwd_generate( pass, 8 );
+}
+
+void
+slap_passwd_hash_type(
+ struct berval * cred,
+ struct berval * new,
+ char *hash,
+ const char **text )
+{
+ new->bv_len = 0;
+ new->bv_val = NULL;
+
+ assert( hash );
+
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+ ldap_pvt_thread_mutex_lock( &passwd_mutex );
+#endif
+
+ lutil_passwd_hash( cred , hash, new, text );
+
+#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
+ ldap_pvt_thread_mutex_unlock( &passwd_mutex );
+#endif
+
+}
+void
+slap_passwd_hash(
+ struct berval * cred,
+ struct berval * new,
+ const char **text )
+{
+ char *hash = NULL;
+ if ( default_passwd_hash ) {
+ hash = default_passwd_hash[0];
+ }
+ if ( !hash ) {
+ hash = (char *)defhash[0];
}
- return( 1 );
+ slap_passwd_hash_type( cred, new, hash, text );
}
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