/* rwm.c - rewrite/remap operations */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 2003-2004 The OpenLDAP Foundation. * Portions Copyright 2003 Pierangelo Masarati. * 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 * . */ #include "portable.h" #ifdef SLAPD_OVER_RWM #include #include "slap.h" #include "rwm.h" static int rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; struct berval dn, ndn, mdn = { 0, NULL }; int rc = 0; dncookie dc; /* * Rewrite the bind dn if needed */ dc.rwmap = rwmap; #ifdef ENABLE_REWRITE dc.conn = op->o_conn; dc.rs = rs; dc.ctx = (char *)cookie; #else dc.tofrom = ((int *)cookie)[0]; dc.normalized = 0; #endif rc = rwm_dn_massage( &dc, &op->o_req_dn, &mdn ); if ( rc != LDAP_SUCCESS ) { return rc; } if ( mdn.bv_val == op->o_req_dn.bv_val ) { return LDAP_SUCCESS; } rc = dnPrettyNormal( NULL, &mdn, &dn, &ndn, op->o_tmpmemctx ); if ( rc != LDAP_SUCCESS ) { return rc; } if ( mdn.bv_val != dn.bv_val ) { ch_free( mdn.bv_val ); } op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx ); op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx ); op->o_req_dn = dn; op->o_req_ndn = ndn; return LDAP_SUCCESS; } static int rwm_add( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; int rc, i, isupdate; Attribute **ap = NULL; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "addDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "addDn massage error" ); return -1; } /* Count number of attributes in entry */ isupdate = be_isupdate( op->o_bd, &op->o_ndn ); for ( i = 0, ap = &op->oq_add.rs_e->e_attrs; *ap; ) { struct berval mapped; Attribute *a; if ( !isupdate && (*ap)->a_desc->ad_type->sat_no_user_mod ) { goto cleanup_attr; } rwm_map( &rwmap->rwm_at, &(*ap)->a_desc->ad_cname, &mapped, RWM_MAP ); if ( mapped.bv_val == NULL || mapped.bv_val[0] == '\0' ) { goto cleanup_attr; } if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) { /* * FIXME: rewrite could fail; in this case * the operation should give up, right? */ #ifdef ENABLE_REWRITE rc = rwm_dnattr_rewrite( op, rs, "addDn", (*ap)->a_vals ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc, (*ap)->a_vals ); #endif if ( rc ) { goto cleanup_attr; } } ap = &(*ap)->a_next; continue; cleanup_attr:; /* FIXME: leaking attribute/values? */ a = *ap; *ap = (*ap)->a_next; ber_bvarray_free( a->a_vals ); ber_bvarray_free( a->a_nvals ); ch_free( a ); } /* TODO: map attribute types, values of DN-valued attributes ... */ return SLAP_CB_CONTINUE; } static int rwm_bind( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; int rc; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "bindDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "bindDn massage error" ); return -1; } return SLAP_CB_CONTINUE; } static int rwm_compare( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; int rc; struct berval mapped_at = { 0, NULL }, mapped_vals[2] = { { 0, NULL }, { 0, NULL } }; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "compareDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "compareDn massage error" ); return -1; } /* if the attribute is an objectClass, try to remap its value */ if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass || op->orc_ava->aa_desc == slap_schema.si_ad_structuralObjectClass ) { rwm_map( &rwmap->rwm_oc, &op->orc_ava->aa_value, &mapped_vals[0], RWM_MAP ); if ( mapped_vals[0].bv_val == NULL || mapped_vals[0].bv_val[0] == '\0') { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, LDAP_OTHER, "compare objectClass map error" ); return -1; } else if ( mapped_vals[0].bv_val != op->orc_ava->aa_value.bv_val ) { free( op->orc_ava->aa_value.bv_val ); op->orc_ava->aa_value = mapped_vals[0]; } mapped_at = op->orc_ava->aa_desc->ad_cname; } else { rwm_map( &rwmap->rwm_at, &op->orc_ava->aa_desc->ad_cname, &mapped_at, RWM_MAP ); if ( mapped_at.bv_val == NULL || mapped_at.bv_val[0] == '\0') { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, LDAP_OTHER, "compare attributeType map error" ); return -1; } if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) { mapped_vals[0] = op->orc_ava->aa_value; rc = rwm_dnattr_rewrite( op, rs, "compareAttrDN", mapped_vals ); if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "compareAttrDN massage error" ); return -1; } if ( mapped_vals[0].bv_val != op->orc_ava->aa_value.bv_val ) { free( op->orc_ava->aa_value.bv_val ); op->orc_ava->aa_value = mapped_vals[0]; } } } /* TODO: rewrite attribute types, values of DN-valued attributes ... */ return SLAP_CB_CONTINUE; } static int rwm_delete( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; int rc; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "deleteDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "deleteDn massage error" ); return rc; } return SLAP_CB_CONTINUE; } static int rwm_modify( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; int rc; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "modifyDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "modifyDn massage error" ); return rc; } /* TODO: rewrite attribute types, values of DN-valued attributes ... */ return SLAP_CB_CONTINUE; } static int rwm_modrdn( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; int rc; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "renameDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "renameDn massage error" ); return rc; } /* TODO: rewrite attribute types, values of DN-valued attributes ... */ return SLAP_CB_CONTINUE; } static int rwm_search( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; int rc; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "searchDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "searchDn massage error" ); return rc; } /* TODO: rewrite/map filter & attrs */ return SLAP_CB_CONTINUE; } static int rwm_extended( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; int rc; #ifdef ENABLE_REWRITE rc = rwm_op_dn_massage( op, rs, "extendedDn" ); #else rc = 1; rc = rwm_op_dn_massage( op, rs, &rc ); #endif if ( rc != LDAP_SUCCESS ) { op->o_bd->bd_info = (BackendInfo *)on->on_info; send_ldap_error( op, rs, rc, "extendedDn massage error" ); return rc; } /* TODO: rewrite/map extended data ? ... */ return 0; } static int rwm_matched( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; struct berval dn, mdn; dncookie dc; if ( rs->sr_matched == NULL ) { return SLAP_CB_CONTINUE; } dc.rwmap = rwmap; #ifdef ENABLE_REWRITE dc.conn = op->o_conn; dc.rs = rs; dc.ctx = "matchedDn"; #else dc.tofrom = 0; dc.normalized = 0; #endif ber_str2bv( rs->sr_matched, 0, 0, &dn ); rwm_dn_massage( &dc, &dn, &mdn ); if ( mdn.bv_val != dn.bv_val ) { if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) { ch_free( (void *)rs->sr_matched ); } else { rs->sr_flags |= REP_MATCHED_MUSTBEFREED; } rs->sr_matched = mdn.bv_val; } return SLAP_CB_CONTINUE; } static int rwm_send_entry( Operation *op, SlapReply *rs ) { slap_overinst *on = (slap_overinst *) op->o_bd->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; Entry *e = NULL; struct berval dn = { 0, NULL }, ndn = { 0, NULL }; dncookie dc; int rc = SLAP_CB_CONTINUE; assert( rs->sr_entry ); e = rs->sr_entry; /* * Rewrite the dn of the result, if needed */ dc.rwmap = rwmap; #ifdef ENABLE_REWRITE dc.conn = op->o_conn; dc.rs = NULL; dc.ctx = "searchResultDN"; #else dc.tofrom = 0; dc.normalized = 0; #endif if ( rwm_dn_massage( &dc, &e->e_name, &dn ) ) { return LDAP_OTHER; } if ( e->e_name.bv_val == dn.bv_val ) { return SLAP_CB_CONTINUE; } /* * Note: this may fail if the target host(s) schema differs * from the one known to the meta, and a DN with unknown * attributes is returned. */ if ( dnNormalize( 0, NULL, NULL, &dn, &ndn, NULL ) != LDAP_SUCCESS ) { if ( dn.bv_val != e->e_name.bv_val ) { ch_free( dn.bv_val ); } rc = LDAP_INVALID_DN_SYNTAX; goto fail; } if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) { e = entry_dup( e ); if ( e == NULL ) { goto fail; } rs->sr_flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED ); } free( e->e_name.bv_val ); free( e->e_nname.bv_val ); e->e_name = dn; e->e_nname = ndn; rs->sr_entry = e; /* TODO: map entry attribute types, objectclasses * and dn-valued attribute values */ return SLAP_CB_CONTINUE; fail:; if ( dn.bv_val && ( dn.bv_val != e->e_name.bv_val ) ) { ch_free( dn.bv_val ); } if ( ndn.bv_val ) { ch_free( ndn.bv_val ); } return rc; } static int rwm_rw_config( BackendDB *be, const char *fname, int lineno, int argc, char **argv ) { #ifdef ENABLE_REWRITE slap_overinst *on = (slap_overinst *) be->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; return rewrite_parse( rwmap->rwm_rw, fname, lineno, argc, argv ); #else /* !ENABLE_REWRITE */ fprintf( stderr, "%s: line %d: rewrite capabilities " "are not enabled\n", fname, lineno ); #endif /* !ENABLE_REWRITE */ return 0; } static int rwm_suffixmassage_config( BackendDB *be, const char *fname, int lineno, int argc, char **argv ) { slap_overinst *on = (slap_overinst *) be->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; struct berval bvnc, nvnc, pvnc, brnc, nrnc, prnc; #ifdef ENABLE_REWRITE int rc; #endif /* ENABLE_REWRITE */ /* * syntax: * * suffixmassage * * the field must be defined as a valid suffix * (or suffixAlias?) for the current database; * the shouldn't have already been * defined as a valid suffix or suffixAlias for the * current server */ if ( argc != 3 ) { fprintf( stderr, "%s: line %d: syntax is" " \"suffixMassage " " \"\n", fname, lineno ); return 1; } ber_str2bv( argv[1], 0, 0, &bvnc ); if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) { fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n", fname, lineno, bvnc.bv_val ); return 1; } ber_str2bv( argv[2], 0, 0, &brnc ); if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) { fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n", fname, lineno, brnc.bv_val ); free( nvnc.bv_val ); free( pvnc.bv_val ); return 1; } #ifdef ENABLE_REWRITE /* * The suffix massaging is emulated * by means of the rewrite capabilities */ rc = rwm_suffix_massage_config( rwmap->rwm_rw, &pvnc, &nvnc, &prnc, &nrnc ); free( nvnc.bv_val ); free( pvnc.bv_val ); free( nrnc.bv_val ); free( prnc.bv_val ); return( rc ); #else /* !ENABLE_REWRITE */ ber_bvarray_add( &rwmap->rwm_suffix_massage, &pvnc ); ber_bvarray_add( &rwmap->rwm_suffix_massage, &nvnc ); ber_bvarray_add( &rwmap->rwm_suffix_massage, &prnc ); ber_bvarray_add( &rwmap->rwm_suffix_massage, &nrnc ); #endif /* !ENABLE_REWRITE */ return 0; } static int rwm_m_config( BackendDB *be, const char *fname, int lineno, int argc, char **argv ) { slap_overinst *on = (slap_overinst *) be->bd_info; struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; /* objectclass/attribute mapping */ return rwm_map_config( &rwmap->rwm_oc, &rwmap->rwm_at, fname, lineno, argc, argv ); } static int rwm_response( Operation *op, SlapReply *rs ) { int rc; if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) { return rwm_send_entry( op, rs ); } switch( op->o_tag ) { case LDAP_REQ_BIND: case LDAP_REQ_ADD: case LDAP_REQ_DELETE: case LDAP_REQ_MODRDN: case LDAP_REQ_MODIFY: case LDAP_REQ_COMPARE: case LDAP_REQ_SEARCH: case LDAP_REQ_EXTENDED: rc = rwm_matched( op, rs ); break; default: rc = SLAP_CB_CONTINUE; break; } return rc; } static int rwm_config( BackendDB *be, const char *fname, int lineno, int argc, char **argv ) { int rc = 0; if ( strncasecmp( argv[0], "rewrite", sizeof("rewrite") - 1) == 0 ) { rc = rwm_rw_config( be, fname, lineno, argc, argv ); } else if (strcasecmp( argv[0], "map" ) == 0 ) { rc = rwm_m_config( be, fname, lineno, argc, argv ); } else if (strcasecmp( argv[0], "suffixmassage" ) == 0 ) { rc = rwm_suffixmassage_config( be, fname, lineno, argc, argv ); } else { rc = SLAP_CONF_UNKNOWN; } return rc; } static int rwm_over_init( BackendDB *be ) { slap_overinst *on = (slap_overinst *) be->bd_info; struct ldapmapping *mapping = NULL; struct ldaprwmap *rwmap; rwmap = (struct ldaprwmap *)ch_malloc(sizeof(struct ldaprwmap)); memset(rwmap, 0, sizeof(struct ldaprwmap)); #ifdef ENABLE_REWRITE rwmap->rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT ); if ( rwmap->rwm_rw == NULL ) { ch_free( rwmap ); return -1; } #endif /* ENABLE_REWRITE */ rwm_map_init( &rwmap->rwm_oc, &mapping ); rwm_map_init( &rwmap->rwm_at, &mapping ); on->on_bi.bi_private = (void *)rwmap; return 0; } static int rwm_destroy( BackendDB *be ) { slap_overinst *on = (slap_overinst *) be->bd_info; int rc = 0; if ( on->on_bi.bi_private ) { struct ldaprwmap *rwmap = (struct ldaprwmap *)on->on_bi.bi_private; #ifdef ENABLE_REWRITE if (rwmap->rwm_rw) { rewrite_info_delete( &rwmap->rwm_rw ); } #else /* !ENABLE_REWRITE */ if ( rwmap->rwm_suffix_massage ) { ber_bvarray_free( rwmap->rwm_suffix_massage ); } #endif /* !ENABLE_REWRITE */ avl_free( rwmap->rwm_oc.remap, NULL ); avl_free( rwmap->rwm_oc.map, rwm_mapping_free ); avl_free( rwmap->rwm_at.remap, NULL ); avl_free( rwmap->rwm_at.map, rwm_mapping_free ); } return rc; } static slap_overinst rwm = { { NULL } }; int rwm_init(void) { memset( &rwm, 0, sizeof(slap_overinst) ); rwm.on_bi.bi_type = "rewrite-remap"; rwm.on_bi.bi_db_init = rwm_over_init; rwm.on_bi.bi_db_config = rwm_config; rwm.on_bi.bi_db_destroy = rwm_destroy; rwm.on_bi.bi_op_bind = rwm_bind; rwm.on_bi.bi_op_search = rwm_search; rwm.on_bi.bi_op_compare = rwm_compare; rwm.on_bi.bi_op_modify = rwm_modify; rwm.on_bi.bi_op_modrdn = rwm_modrdn; rwm.on_bi.bi_op_add = rwm_add; rwm.on_bi.bi_op_delete = rwm_delete; rwm.on_bi.bi_extended = rwm_extended; rwm.on_response = rwm_response; return overlay_register( &rwm ); } #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC int init_module(int argc, char *argv[]) { return rwm_init(); } #endif #endif /* SLAPD_OVER_RWM */