mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
334 lines
6.9 KiB
C
334 lines
6.9 KiB
C
/* bind.c - ldbm backend bind and unbind routines */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/krb.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/unistd.h>
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#include "slap.h"
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#include <lber_pvt.h>
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#include <lutil.h>
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int passwd_extop(
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Connection *conn, Operation *op,
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const char *reqoid,
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struct berval *reqdata,
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char **rspoid,
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struct berval **rspdata,
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LDAPControl ***rspctrls,
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const char **text,
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BerVarray *refs )
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{
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int rc;
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assert( reqoid != NULL );
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assert( strcmp( LDAP_EXOP_MODIFY_PASSWD, reqoid ) == 0 );
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if( op->o_dn.bv_len == 0 ) {
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*text = "only authenticated users may change passwords";
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return LDAP_STRONG_AUTH_REQUIRED;
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}
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if( conn->c_authz_backend == NULL || !conn->c_authz_backend->be_extended ) {
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*text = "operation not supported for current user";
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return LDAP_UNWILLING_TO_PERFORM;
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}
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{
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struct berval passwd = BER_BVC( LDAP_EXOP_MODIFY_PASSWD );
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rc = backend_check_restrictions( conn->c_authz_backend,
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conn, op, &passwd, text );
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}
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if( rc != LDAP_SUCCESS ) {
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return rc;
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}
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if( conn->c_authz_backend->be_update_ndn.bv_len ) {
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/* we SHOULD return a referral in this case */
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*refs = referral_rewrite( conn->c_authz_backend->be_update_refs,
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NULL, NULL, LDAP_SCOPE_DEFAULT );
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rc = LDAP_REFERRAL;
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} else {
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rc = conn->c_authz_backend->be_extended(
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conn->c_authz_backend, conn, op,
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reqoid, reqdata,
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rspoid, rspdata, rspctrls,
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text, refs );
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}
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return rc;
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}
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int slap_passwd_parse( struct berval *reqdata,
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struct berval *id,
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struct berval *oldpass,
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struct berval *newpass,
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const char **text )
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{
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int rc = LDAP_SUCCESS;
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ber_tag_t tag;
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ber_len_t len;
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char berbuf[256];
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BerElement *ber = (BerElement *)berbuf;
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if( reqdata == NULL ) {
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return LDAP_SUCCESS;
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}
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/* ber_init2 uses reqdata directly, doesn't allocate new buffers */
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ber_init2( ber, reqdata, 0 );
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tag = ber_scanf( ber, "{" /*}*/ );
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if( tag != LBER_ERROR ) {
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tag = ber_peek_tag( ber, &len );
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}
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if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_ID ) {
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if( id == NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"slap_passwd_parse: ID not allowed.\n"));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID not allowed.\n",
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0, 0, 0 );
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#endif
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*text = "user must change own password";
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rc = LDAP_UNWILLING_TO_PERFORM;
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goto done;
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}
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tag = ber_scanf( ber, "m", id );
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if( tag == LBER_ERROR ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"slap_passwd_parse: ID parse failed.\n"));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
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0, 0, 0 );
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#endif
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goto decoding_error;
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}
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tag = ber_peek_tag( ber, &len);
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}
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if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_OLD ) {
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if( oldpass == NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"slap_passwd_parse: OLD not allowed.\n" ));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD not allowed.\n",
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0, 0, 0 );
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#endif
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*text = "use bind to verify old password";
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rc = LDAP_UNWILLING_TO_PERFORM;
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goto done;
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}
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tag = ber_scanf( ber, "m", oldpass );
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if( tag == LBER_ERROR ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"slap_passwd_parse: ID parse failed.\n" ));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: ID parse failed.\n",
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0, 0, 0 );
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#endif
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goto decoding_error;
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}
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tag = ber_peek_tag( ber, &len );
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}
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if( tag == LDAP_TAG_EXOP_MODIFY_PASSWD_NEW ) {
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if( newpass == NULL ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"slap_passwd_parse: NEW not allowed.\n" ));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: NEW not allowed.\n",
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0, 0, 0 );
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#endif
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*text = "user specified passwords disallowed";
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rc = LDAP_UNWILLING_TO_PERFORM;
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goto done;
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}
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tag = ber_scanf( ber, "m", newpass );
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if( tag == LBER_ERROR ) {
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"slap_passwd_parse: OLD parse failed.\n"));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_parse: OLD parse failed.\n",
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0, 0, 0 );
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#endif
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goto decoding_error;
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}
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tag = ber_peek_tag( ber, &len );
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}
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if( len != 0 ) {
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decoding_error:
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
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"slap_passwd_parse: decoding error, len=%ld\n", (long)len ));
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#else
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Debug( LDAP_DEBUG_TRACE,
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"slap_passwd_parse: decoding error, len=%ld\n",
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(long) len, 0, 0 );
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#endif
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*text = "data decoding error";
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rc = LDAP_PROTOCOL_ERROR;
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}
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done:
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return rc;
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}
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struct berval * slap_passwd_return(
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struct berval *cred )
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{
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int rc;
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struct berval *bv = NULL;
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char berbuf[256];
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/* opaque structure, size unknown but smaller than berbuf */
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BerElement *ber = (BerElement *)berbuf;
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assert( cred != NULL );
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
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"slap_passwd_return: %ld\n",(long)cred->bv_len ));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_return: %ld\n",
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(long) cred->bv_len, 0, 0 );
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#endif
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ber_init_w_nullc( ber, LBER_USE_DER );
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rc = ber_printf( ber, "{tON}",
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LDAP_TAG_EXOP_MODIFY_PASSWD_GEN, cred );
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if( rc >= 0 ) {
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(void) ber_flatten( ber, &bv );
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}
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ber_free_buf( ber );
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return bv;
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}
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int
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slap_passwd_check(
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Connection *conn,
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Attribute *a,
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struct berval *cred )
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{
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int result = 1;
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struct berval *bv;
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#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
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ldap_pvt_thread_mutex_lock( &passwd_mutex );
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#ifdef SLAPD_SPASSWD
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lutil_passwd_sasl_conn = conn->c_sasl_context;
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#endif
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#endif
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for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
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if( !lutil_passwd( bv, cred, NULL ) ) {
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result = 0;
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break;
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}
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}
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#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
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#ifdef SLAPD_SPASSWD
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lutil_passwd_sasl_conn = NULL;
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#endif
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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#endif
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return result;
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}
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void
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slap_passwd_generate( struct berval *pass )
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{
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struct berval *tmp;
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#ifdef NEW_LOGGING
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LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
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"slap_passwd_generate: begin\n" ));
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#else
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Debug( LDAP_DEBUG_TRACE, "slap_passwd_generate\n", 0, 0, 0 );
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#endif
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/*
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* generate passwords of only 8 characters as some getpass(3)
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* implementations truncate at 8 characters.
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*/
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tmp = lutil_passwd_generate( 8 );
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if (tmp) {
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*pass = *tmp;
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free(tmp);
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} else {
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pass->bv_val = NULL;
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pass->bv_len = 0;
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}
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}
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void
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slap_passwd_hash(
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struct berval * cred,
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struct berval * new )
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{
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struct berval *tmp;
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#ifdef LUTIL_SHA1_BYTES
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char* hash = default_passwd_hash ? default_passwd_hash : "{SSHA}";
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#else
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char* hash = default_passwd_hash ? default_passwd_hash : "{SMD5}";
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#endif
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#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
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ldap_pvt_thread_mutex_lock( &passwd_mutex );
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#endif
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tmp = lutil_passwd_hash( cred , hash );
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assert( tmp != NULL );
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#if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
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ldap_pvt_thread_mutex_unlock( &passwd_mutex );
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#endif
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*new = *tmp;
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free( tmp );
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return;
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}
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