address.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) 1990-1997 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.
- *
- * $Header: /cvsroot/nsnam/ns-2/routing/address.cc,v 1.27 2005/07/27 01:13:44 tomh Exp $
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <assert.h>
- #include "address.h"
- #include "route.h"
- static class AddressClass : public TclClass {
- public:
- AddressClass() : TclClass("Address") {}
- TclObject* create(int, const char*const*) {
- return (new Address());
- }
- } class_address;
- Address* Address::instance_;
- Address::Address() :
- NodeShift_(NULL), NodeMask_(NULL), McastShift_(0), McastMask_(0),
- levels_(0)
- {
- }
- Address::~Address()
- {
- delete [] NodeShift_;
- delete [] NodeMask_;
- }
- int Address::command(int argc, const char*const* argv)
- {
- int i, c, temp=0;
- Tcl& tcl = Tcl::instance();
- if ((instance_ == 0) || (instance_ != this))
- instance_ = this;
- if (argc == 3) {
- if (strcmp(argv[1], "str2addr") == 0) {
- tcl.resultf("%d", str2addr(argv[2]));
- return (TCL_OK);
- }
- }
- if (argc >= 3) {
- if (strcmp(argv[1], "bpl-are") == 0) {
- if (levels_ != (argc-2)) {
- tcl.resultf("#bpl don't match with #hier levelsn");
- return (TCL_ERROR);
- }
- bpl_ = new int[levels_ + 1];
- for (c=1; c<=levels_; c++)
- bpl_[c] = atoi(argv[c+1]);
- return TCL_OK;
- }
- }
- if (argc == 4) {
- if (strcmp(argv[1], "mcastbits-are") == 0) {
- McastShift_ = atoi(argv[2]);
- McastMask_ = atoi(argv[3]);
- return (TCL_OK);
- }
- }
- if (argc >= 4) {
- if (strcmp(argv[1], "add-hier") == 0) {
- /*
- * <address> add-hier <level> <mask> <shift>
- */
- int level = atoi(argv[2]);
- int mask = atoi(argv[3]);
- int shift = atoi(argv[4]);
- if (levels_ < level)
- levels_ = level;
- NodeShift_[level] = shift;
- NodeMask_[level] = mask;
- return (TCL_OK);
- }
- if (strcmp(argv[1], "idsbits-are") == 0) {
- temp = (argc - 2)/2;
- if (levels_) {
- if (temp != levels_) {
- tcl.resultf("#idshiftbits don't match with #hier levelsn");
- return (TCL_ERROR);
- }
- }
- else
- levels_ = temp;
- NodeShift_ = new int[levels_ + 1];
- for (i = 3, c = 1; c <= levels_; c++, i+=2)
- NodeShift_[c] = atoi(argv[i]);
- return (TCL_OK);
- }
-
- if (strcmp(argv[1], "idmbits-are") == 0) {
- temp = (argc - 2)/2;
- if (levels_) {
- if (temp != levels_) {
- tcl.resultf("#idmaskbits don't match with #hier levelsn");
- return (TCL_ERROR);
- }
- }
- else
- levels_ = temp;
- NodeMask_ = new int[levels_ + 1];
- for (i = 3, c = 1; c <= levels_; c++, i+=2)
- NodeMask_[c] = atoi(argv[i]);
- return (TCL_OK);
- }
- }
- return TclObject::command(argc, argv);
- }
- char *Address::print_nodeaddr(int address)
- {
- int a;
- char temp[SMALL_LEN];
- char str[SMALL_LEN];
- char *addrstr;
- str[0] = ' ';
- for (int i=1; i <= levels_; i++) {
- a = address >> NodeShift_[i];
- if (levels_ > 1)
- a = a & NodeMask_[i];
- //if (i < levels_)
- sprintf(temp, "%d.", a);
- //else
- //sprintf(temp, "%d", a);
-
- strcat(str, temp);
- }
- int len;
- len = strlen(str);
- addrstr = new char[len+1];
- str[len-1]= 0; //kill the last dot
- strcpy(addrstr, str);
- // printf("Nodeaddr - %sn",addrstr);
- return(addrstr);
- }
- int Address::hier_addr(int address, int level) {
- if (level <= levels_) {
- return ( (address >> NodeShift_[level]) & NodeMask_[level]);
- }
- perror("Address::hier_addr: levels greater than total h_levels_n");
- return -1;
- }
- char *Address::get_subnetaddr(int address)
- {
- int a;
- char temp[SMALL_LEN];
- char str[SMALL_LEN];
- char *addrstr;
- if (levels_ > 1) {
- str[0] = ' ';
- for (int i=1; i < levels_; i++) {
- a = address >> NodeShift_[i];
- a = a & NodeMask_[i];
- if (i < (levels_-1))
- sprintf(temp, "%d.", a);
- else
- sprintf(temp, "%d", a);
- strcat(str, temp);
- }
- addrstr = new char[strlen(str)+1];
- strcpy(addrstr, str);
- //printf("Subnet_addr - %sn",addrstr);
- return(addrstr);
- }
- return NULL;
- }
- // returns nodeaddr in integer form (relevant especially for hier-addr)
- int Address::get_nodeaddr(int address)
- {
- int a;
- char *temp;
-
- temp = print_nodeaddr(address);
- a = str2addr(temp);
- delete [] temp;
- return a;
- }
- //Sets address in pkthdr format (having port and node fields)
- int Address::create_ipaddr(int nodeid, int)
- {
- return nodeid;
- // The following code is obsolete
- #if 0
- int address;
- if (levels_ < 2)
- address = (nodeid & NodeMask_[1]) << NodeShift_[1];
- else
- address = nodeid;
- address = ((portid & PortMask_) << PortShift_) |
- ((~(PortMask_) << PortShift_) & address);
- return address;
- #endif
- }
- int Address::get_lastaddr(int address)
- {
- int a;
- a = address >> NodeShift_[levels_];
- a = a & NodeMask_[levels_];
- return a;
- }
- char *Address::print_portaddr(int address)
- {
- char str[SMALL_LEN];
- char *addrstr;
- str[0] = ' ';
- #if 0
- int a;
- a = address >> PortShift_;
- a = a & PortMask_;
- #endif
- sprintf(str, "%d", address);
- addrstr = new char[strlen(str)+1];
- strcpy(addrstr, str);
- // printf("Portaddr - %sn",addrstr);
- return(addrstr);
- }
- // Convert address in string format to binary format (int).
- int Address::str2addr(const char *str) const
- {
-
- if (levels_ < 2) {
- int tmp = atoi(str);
- if (tmp < 0)
- return (tmp);
- u_int uitmp = (u_int) tmp;
- if (uitmp > ((unsigned long)(1 << bpl_[1])) ) {
- fprintf(stderr, "Error!!nstr2addr:Address %u outside range of address field length %lun",
- uitmp, ((unsigned long)(1<< bpl_[1])));
- exit(1);
- }
- return tmp;
- }
- /*
- int istr[levels_], addr= 0;
- */
- /*
- * for VC++
- */
- int *istr= new int[levels_];
- int addr= 0;
-
- RouteLogic::ns_strtok((char*)str, istr);
- for (int i = 0; i < levels_; i++) {
- assert (istr[i] - 1 >= 0);
- if (((unsigned long)--istr[i]) > ((unsigned long)(1 << bpl_[i+1])) ) {
- fprintf(stderr, "Error!!nstr2addr:Address %d outside range of address field length %lun",
- istr[i], ((unsigned long)(1<< bpl_[i+1])));
- exit(1);
- }
- addr = set_word_field(addr, istr[i],
- NodeShift_[i+1], NodeMask_[i+1]);
- }
-
- delete [] istr;
-
- return addr;
- }