bi-connector.cc
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上传日期:2015-12-11
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1997 Regents of the University of California.
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the MASH Research
- * Group at the University of California Berkeley.
- * 4. Neither the name of the University nor of the Research Group may be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
- */
- #include "packet.h"
- #include "bi-connector.h"
- static class BiConnectorClass : public TclClass {
- public:
- BiConnectorClass() : TclClass("BiConnector") {}
- TclObject* create(int, const char*const*) {
- return (new BiConnector);
- }
- } class_biconnector;
- BiConnector::BiConnector() : uptarget_(0), downtarget_(0), drop_(0)
- {}
- int BiConnector::command(int argc, const char*const* argv)
- {
- Tcl& tcl = Tcl::instance();
- /*XXX*/
- if (argc == 2) {
- if (strcmp(argv[1], "up-target") == 0) {
- if (uptarget_ != 0)
- tcl.result(uptarget_->name());
- return (TCL_OK);
- }
- if (strcmp(argv[1], "down-target") == 0) {
- if (downtarget_ != 0)
- tcl.result(downtarget_->name());
- return (TCL_OK);
- }
- if (strcmp(argv[1], "drop-target") == 0) {
- if (drop_ != 0)
- tcl.resultf("%s", drop_->name());
- return (TCL_OK);
- }
- if (strcmp(argv[1], "isDynamic") == 0) {
- return TCL_OK;
- }
- }
- else if (argc == 3) {
- TclObject *obj;
-
- if( (obj = TclObject::lookup(argv[2])) == 0) {
- fprintf(stderr, "%s lookup failedn", argv[1]);
- return TCL_ERROR;
- }
- if (strcmp(argv[1], "up-target") == 0) {
- if (*argv[2] == '0') {
- uptarget_ = 0;
- return (TCL_OK);
- }
- uptarget_ = (NsObject*) obj;
- if (uptarget_ == 0) {
- tcl.resultf("no such object %s", argv[2]);
- return (TCL_ERROR);
- }
- return (TCL_OK);
- }
- if (strcmp(argv[1], "down-target") == 0) {
- if (*argv[2] == '0') {
- downtarget_ = 0;
- return (TCL_OK);
- }
- downtarget_ = (NsObject*) obj;
- if (downtarget_ == 0) {
- tcl.resultf("no such object %s", argv[2]);
- return (TCL_ERROR);
- }
- return (TCL_OK);
- }
- if (strcmp(argv[1], "drop-target") == 0) {
- drop_ = (NsObject*) obj;
- if (drop_ == 0) {
- tcl.resultf("no object %s", argv[2]);
- return (TCL_ERROR);
- }
- return (TCL_OK);
- }
- }
- return (NsObject::command(argc, argv));
- }
- void BiConnector::recv(Packet* p, Handler* h)
- {
- hdr_cmn *ch = HDR_CMN(p);
- switch (ch->direction()) {
- case hdr_cmn::UP :
- sendUp(p, h);
- break;
- case hdr_cmn::DOWN :
- sendDown(p, h);
- break;
- default:
- printf("Error: Packet Direction not specified; Using default 'UP' directionnn");
- sendUp(p, h);
- }
- }
- void BiConnector::drop(Packet* p)
- {
- if (drop_ != 0)
- drop_->recv(p);
- else
- Packet::free(p);
- }
- void BiConnector::drop(Packet* p, const char *s)
- {
- if (drop_ != 0)
- drop_->recv(p, s);
- else
- Packet::free(p);
- }