/* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 1999-2003 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 * . */ /* * LDAPv3 Extended Operation Request * ExtendedRequest ::= [APPLICATION 23] SEQUENCE { * requestName [0] LDAPOID, * requestValue [1] OCTET STRING OPTIONAL * } * * LDAPv3 Extended Operation Response * ExtendedResponse ::= [APPLICATION 24] SEQUENCE { * COMPONENTS OF LDAPResult, * responseName [10] LDAPOID OPTIONAL, * response [11] OCTET STRING OPTIONAL * } * */ #include "portable.h" #include #include #include #include "slap.h" #include "lber_pvt.h" #ifdef LDAP_SLAPI #include "slapi.h" #endif #define UNSUPPORTED_EXTENDEDOP "unsupported extended operation" #ifdef LDAP_DEVEL #define SLAP_EXOP_HIDE 0x0000 #else #define SLAP_EXOP_HIDE 0x8000 #endif static struct extop_list { struct extop_list *next; struct berval oid; slap_mask_t flags; SLAP_EXTOP_MAIN_FN *ext_main; } *supp_ext_list = NULL; static SLAP_EXTOP_MAIN_FN whoami_extop; /* this list of built-in extops is for extops that are not part * of backends or in external modules. essentially, this is * just a way to get built-in extops onto the extop list without * having a separate init routine for each built-in extop. */ #ifdef LDAP_EXOP_X_CANCEL const struct berval slap_EXOP_CANCEL = BER_BVC(LDAP_EXOP_X_CANCEL); #endif const struct berval slap_EXOP_WHOAMI = BER_BVC(LDAP_EXOP_X_WHO_AM_I); const struct berval slap_EXOP_MODIFY_PASSWD = BER_BVC(LDAP_EXOP_MODIFY_PASSWD); const struct berval slap_EXOP_START_TLS = BER_BVC(LDAP_EXOP_START_TLS); static struct { const struct berval *oid; slap_mask_t flags; SLAP_EXTOP_MAIN_FN *ext_main; } builtin_extops[] = { #ifdef LDAP_EXOP_X_CANCEL { &slap_EXOP_CANCEL, SLAP_EXOP_HIDE, cancel_extop }, #endif { &slap_EXOP_WHOAMI, 0, whoami_extop }, { &slap_EXOP_MODIFY_PASSWD, 0, passwd_extop }, #ifdef HAVE_TLS { &slap_EXOP_START_TLS, 0, starttls_extop }, #endif { NULL, 0, NULL } }; static struct extop_list *find_extop( struct extop_list *list, struct berval *oid ); struct berval * get_supported_extop (int index) { struct extop_list *ext; /* linear scan is slow, but this way doesn't force a * big change on root_dse.c, where this routine is used. */ for (ext = supp_ext_list; ext != NULL && --index >= 0; ext = ext->next) { ; /* empty */ } if (ext == NULL) return NULL; return &ext->oid; } int exop_root_dse_info( Entry *e ) { AttributeDescription *ad_supportedExtension = slap_schema.si_ad_supportedExtension; struct berval vals[2]; struct extop_list *ext; vals[1].bv_val = NULL; vals[1].bv_len = 0; for (ext = supp_ext_list; ext != NULL; ext = ext->next) { if( ext->flags & SLAP_EXOP_HIDE ) continue; vals[0] = ext->oid; if( attr_merge( e, ad_supportedExtension, vals, NULL ) ) { return LDAP_OTHER; } } return LDAP_SUCCESS; } int do_extended( Operation *op, SlapReply *rs ) { struct berval reqdata = {0, NULL}; ber_tag_t tag; ber_len_t len; struct extop_list *ext = NULL; #if defined(LDAP_SLAPI) Slapi_PBlock *pb = op->o_pb; SLAPI_FUNC funcAddr = NULL; int extop_rc; int msg_sent = FALSE; #endif /* defined(LDAP_SLAPI) */ #ifdef NEW_LOGGING LDAP_LOG( OPERATION, ENTRY, "do_extended: conn %d\n", op->o_connid, 0, 0 ); #else Debug( LDAP_DEBUG_TRACE, "do_extended\n", 0, 0, 0 ); #endif if( op->o_protocol < LDAP_VERSION3 ) { #ifdef NEW_LOGGING LDAP_LOG( OPERATION, ERR, "do_extended: protocol version (%d) too low.\n", op->o_protocol, 0, 0 ); #else Debug( LDAP_DEBUG_ANY, "do_extended: protocol version (%d) too low\n", op->o_protocol, 0 ,0 ); #endif send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "requires LDAPv3" ); rs->sr_err = -1; goto done; } if ( ber_scanf( op->o_ber, "{m" /*}*/, &op->ore_reqoid ) == LBER_ERROR ) { #ifdef NEW_LOGGING LDAP_LOG( OPERATION, ERR, "do_extended: conn %d ber_scanf failed\n", op->o_connid, 0, 0 ); #else Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 ); #endif send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" ); rs->sr_err = -1; goto done; } #ifdef LDAP_SLAPI getPluginFunc( &op->ore_reqoid, &funcAddr ); /* NS-SLAPI extended operation */ if( !funcAddr && !(ext = find_extop(supp_ext_list, &op->ore_reqoid ))) #else if( !(ext = find_extop(supp_ext_list, &op->ore_reqoid ))) #endif { #ifdef NEW_LOGGING LDAP_LOG( OPERATION, ERR, "do_extended: conn %d unsupported operation \"%s\"\n", op->o_connid, op->ore_reqoid.bv_val, 0 ); #else Debug( LDAP_DEBUG_ANY, "do_extended: unsupported operation \"%s\"\n", op->ore_reqoid.bv_val, 0 ,0 ); #endif send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "unsupported extended operation" ); goto done; } tag = ber_peek_tag( op->o_ber, &len ); if( ber_peek_tag( op->o_ber, &len ) == LDAP_TAG_EXOP_REQ_VALUE ) { if( ber_scanf( op->o_ber, "m", &reqdata ) == LBER_ERROR ) { #ifdef NEW_LOGGING LDAP_LOG( OPERATION, ERR, "do_extended: conn %d ber_scanf failed\n", op->o_connid, 0, 0 ); #else Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 ); #endif send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" ); rs->sr_err = -1; goto done; } } if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) { #ifdef NEW_LOGGING LDAP_LOG( OPERATION, ERR, "do_extended: conn %d get_ctrls failed\n", op->o_connid, 0, 0 ); #else Debug( LDAP_DEBUG_ANY, "do_extended: get_ctrls failed\n", 0, 0 ,0 ); #endif return rs->sr_err; } /* check for controls inappropriate for all extended operations */ if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) { send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION, "manageDSAit control inappropriate" ); goto done; } #ifdef NEW_LOGGING LDAP_LOG( OPERATION, DETAIL1, "do_extended: conn %d oid=%s\n.", op->o_connid, op->ore_reqoid.bv_val, 0 ); #else Debug( LDAP_DEBUG_ARGS, "do_extended: oid=%s\n", op->ore_reqoid.bv_val, 0 ,0 ); #endif #if defined(LDAP_SLAPI) if ( funcAddr != NULL ) { rs->sr_err = slapi_pblock_set( pb, SLAPI_EXT_OP_REQ_OID, (void *)op->ore_reqoid.bv_val); if ( rs->sr_err != LDAP_SUCCESS ) { rs->sr_err = LDAP_OTHER; goto done; } rs->sr_err = slapi_pblock_set( pb, SLAPI_EXT_OP_REQ_VALUE, (void *)&reqdata); if ( rs->sr_err != LDAP_SUCCESS ) { rs->sr_err = LDAP_OTHER; goto done; } rs->sr_err = slapi_x_pblock_set_operation( pb, op ); if ( rs->sr_err != LDAP_SUCCESS ) { rs->sr_err = LDAP_OTHER; goto done; } extop_rc = (*funcAddr)( pb ); if ( extop_rc == SLAPI_PLUGIN_EXTENDED_SENT_RESULT ) { msg_sent = TRUE; } else if ( extop_rc == SLAPI_PLUGIN_EXTENDED_NOT_HANDLED ) { rs->sr_err = LDAP_PROTOCOL_ERROR; rs->sr_text = UNSUPPORTED_EXTENDEDOP; } else { rs->sr_err = slapi_pblock_get( pb, SLAPI_EXT_OP_RET_OID, &rs->sr_rspoid); if ( rs->sr_err != LDAP_SUCCESS ) { goto done2; } rs->sr_err = slapi_pblock_get( pb, SLAPI_EXT_OP_RET_VALUE, &rs->sr_rspdata); if ( rs->sr_err != LDAP_SUCCESS ) { goto done2; } rs->sr_err = extop_rc; send_ldap_extended( op, rs ); msg_sent = TRUE; } done2:; if ( rs->sr_err != LDAP_SUCCESS && msg_sent == FALSE ) { send_ldap_result( op, rs ); } if ( rs->sr_rspoid != NULL ) { ch_free( (char *)rs->sr_rspoid ); } if ( rs->sr_rspdata != NULL ) { ber_bvfree( rs->sr_rspdata ); } } else { /* start of OpenLDAP extended operation */ #endif /* defined( LDAP_SLAPI ) */ if (reqdata.bv_val) op->ore_reqdata = &reqdata; rs->sr_err = (ext->ext_main)( op, rs ); if( rs->sr_err != SLAPD_ABANDON ) { if ( rs->sr_err == LDAP_REFERRAL && rs->sr_ref == NULL ) { rs->sr_ref = referral_rewrite( default_referral, NULL, NULL, LDAP_SCOPE_DEFAULT ); } send_ldap_extended( op, rs ); ber_bvarray_free( rs->sr_ref ); } if ( rs->sr_rspoid != NULL ) { free( (char *)rs->sr_rspoid ); } if ( rs->sr_rspdata != NULL ) { ber_bvfree( rs->sr_rspdata ); } #ifdef LDAP_SLAPI } /* end of OpenLDAP extended operation */ #endif /* LDAP_SLAPI */ done: return rs->sr_err; } int load_extop( struct berval *ext_oid, slap_mask_t ext_flags, SLAP_EXTOP_MAIN_FN *ext_main ) { struct extop_list *ext; if( ext_oid == NULL || ext_oid->bv_val == NULL || ext_oid->bv_val[0] == '\0' || ext_oid->bv_len == 0 ) return -1; if(!ext_main) return -1; ext = ch_calloc(1, sizeof(struct extop_list) + ext_oid->bv_len + 1); if (ext == NULL) return(-1); ext->flags = ext_flags; ext->oid.bv_val = (char *)(ext + 1); AC_MEMCPY( ext->oid.bv_val, ext_oid->bv_val, ext_oid->bv_len ); ext->oid.bv_len = ext_oid->bv_len; ext->oid.bv_val[ext->oid.bv_len] = '\0'; ext->ext_main = ext_main; ext->next = supp_ext_list; supp_ext_list = ext; return(0); } int extops_init (void) { int i; for (i = 0; builtin_extops[i].oid != NULL; i++) { load_extop((struct berval *)builtin_extops[i].oid, builtin_extops[i].flags, builtin_extops[i].ext_main); } return(0); } int extops_kill (void) { struct extop_list *ext; /* we allocated the memory, so we have to free it, too. */ while ((ext = supp_ext_list) != NULL) { supp_ext_list = ext->next; ch_free(ext); } return(0); } static struct extop_list * find_extop( struct extop_list *list, struct berval *oid ) { struct extop_list *ext; for (ext = list; ext; ext = ext->next) { if (bvmatch(&ext->oid, oid)) return(ext); } return(NULL); } static int whoami_extop ( Operation *op, SlapReply *rs ) { struct berval *bv; if ( op->ore_reqdata != NULL ) { /* no request data should be provided */ rs->sr_text = "no request data expected"; return LDAP_PROTOCOL_ERROR; } op->o_bd = op->o_conn->c_authz_backend; if( backend_check_restrictions( op, rs, (struct berval *)&slap_EXOP_WHOAMI ) != LDAP_SUCCESS ) { return rs->sr_err; } bv = (struct berval *) ch_malloc( sizeof(struct berval) ); if( op->o_dn.bv_len ) { bv->bv_len = op->o_dn.bv_len + sizeof("dn:")-1; bv->bv_val = ch_malloc( bv->bv_len + 1 ); AC_MEMCPY( bv->bv_val, "dn:", sizeof("dn:")-1 ); AC_MEMCPY( &bv->bv_val[sizeof("dn:")-1], op->o_dn.bv_val, op->o_dn.bv_len ); bv->bv_val[bv->bv_len] = '\0'; } else { bv->bv_len = 0; bv->bv_val = NULL; } rs->sr_rspdata = bv; return LDAP_SUCCESS; }