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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1994-1997 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 Computer Systems
* Engineering Group at Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory 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.
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /cvsroot/nsnam/ns-2/common/message.cc,v 1.13 1998/08/12 23:41:08 gnguyen Exp $ (LBL)";
#endif
#include "agent.h"
#include "random.h"
#include "message.h"
int hdr_msg::offset_;
static class MessageHeaderClass : public PacketHeaderClass {
public:
MessageHeaderClass() : PacketHeaderClass("PacketHeader/Message",
sizeof(hdr_msg)) {
bind_offset(&hdr_msg::offset_);
}
} class_msghdr;
class MessageAgent : public Agent {
public:
MessageAgent();
int command(int argc, const char*const* argv);
void recv(Packet*, Handler*);
};
static class MessageClass : public TclClass {
public:
MessageClass() : TclClass("Agent/Message") {}
TclObject* create(int, const char*const*) {
return (new MessageAgent());
}
} class_message;
MessageAgent::MessageAgent() : Agent(PT_MESSAGE)
{
bind("packetSize_", &size_);
}
void MessageAgent::recv(Packet* pkt, Handler*)
{
hdr_msg* mh = hdr_msg::access(pkt);
char wrk[128];/*XXX*/
sprintf(wrk, "%s recv {%s}", name(), mh->msg());
Tcl& tcl = Tcl::instance();
tcl.eval(wrk);
Packet::free(pkt);
}
/*
* $proc handler $handler
* $proc send $msg
*/
int MessageAgent::command(int argc, const char*const* argv)
{
Tcl& tcl = Tcl::instance();
if (argc == 3) {
if (strcmp(argv[1], "send") == 0) {
Packet* pkt = allocpkt();
hdr_msg* mh = hdr_msg::access(pkt);
const char* s = argv[2];
int n = strlen(s);
if (n >= mh->maxmsg()) {
tcl.result("message too big");
Packet::free(pkt);
return (TCL_ERROR);
}
strcpy(mh->msg(), s);
send(pkt, 0);
return (TCL_OK);
}
}
return (Agent::command(argc, argv));
}
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