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arpcmd.c
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C/C++ Source or Header
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1991-04-26
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242 lines
/* ARP commands
* Copyright 1991 Phil Karn, KA9Q
*/
/* Mods by G1EMM */
#include <stdio.h>
#include <ctype.h>
#include "global.h"
#include "config.h"
#include "mbuf.h"
#include "timer.h"
#include "enet.h"
#include "ax25.h"
#include "arp.h"
#include "netuser.h"
#include "cmdparse.h"
#include "commands.h"
#include "iface.h"
#include "rspf.h"
static int doarpadd __ARGS((int argc,char *argv[],void *p));
static int doarpdrop __ARGS((int argc,char *argv[],void *p));
static int doarpflush __ARGS((int argc,char *argv[],void *p));
static void dumparp __ARGS((void));
static struct cmds Arpcmds[] = {
"add", doarpadd, 0, 4,
"arp add <hostid> ether|ax25|netrom|arcnet <ether addr|callsign>",
"drop", doarpdrop, 0, 3,
"arp drop <hostid> ether|ax25|netrom|arcnet",
"flush", doarpflush, 0, 0,
NULLCHAR,
"publish", doarpadd, 0, 4,
"arp publish <hostid> ether|ax25|netrom|arcnet <ether addr|callsign>",
NULLCHAR,
};
char *Arptypes[] = {
"NET/ROM",
"10 Mb Ethernet",
"3 Mb Ethernet",
"AX.25",
"Pronet",
"Chaos",
"",
"Arcnet",
"Appletalk"
};
int
doarp(argc,argv,p)
int argc;
char *argv[];
void *p;
{
if(argc < 2){
dumparp();
return 0;
}
return subcmd(Arpcmds,argc,argv,p);
}
static
doarpadd(argc,argv,p)
int argc;
char *argv[];
void *p;
{
int16 hardware;
int32 addr;
char *hwaddr;
struct arp_tab *ap;
struct arp_type *at;
int pub = 0;
if(argv[0][0] == 'p') /* Is this entry published? */
pub = 1;
if((addr = resolve(argv[1])) == 0){
tprintf(Badhost,argv[1]);
return 1;
}
/* This is a kludge. It really ought to be table driven */
switch(tolower(argv[2][0])){
case 'n': /* Net/Rom pseudo-type */
hardware = ARP_NETROM;
break;
case 'e': /* "ether" */
hardware = ARP_ETHER;
break;
case 'a': /* "ax25" */
switch(tolower(argv[2][1])) {
case 'x':
hardware = ARP_AX25;
break;
case 'r':
hardware = ARP_ARCNET;
break;
default:
tprintf("unknown hardware type \"%s\"\n",argv[2]);
return -1;
}
break;
case 'm': /* "mac appletalk" */
hardware = ARP_APPLETALK;
break;
default:
tprintf("unknown hardware type \"%s\"\n",argv[2]);
return -1;
}
/* If an entry already exists, clear it */
if((ap = arp_lookup(hardware,addr)) != NULLARP)
arp_drop(ap);
at = &Arp_type[hardware];
if(at->scan == NULLFP){
tprintf("Attach device first\n");
return 1;
}
/* Allocate buffer for hardware address and fill with remaining args */
hwaddr = mallocw(at->hwalen);
/* Destination address */
(*at->scan)(hwaddr,argv[3]);
ap = arp_add(addr,hardware,hwaddr,pub); /* Put in table */
free(hwaddr); /* Clean up */
stop_timer(&ap->timer); /* Make entry permanent */
set_timer(&ap->timer,0L);
#ifdef RSPF
rspfarpupcall(addr,hardware,NULLIF); /* Do an RSPF upcall */
#endif /* RSPF */
return 0;
}
/* Remove an ARP entry */
static
doarpdrop(argc,argv,p)
int argc;
char *argv[];
void *p;
{
int16 hardware;
int32 addr;
struct arp_tab *ap;
if((addr = resolve(argv[1])) == 0){
tprintf(Badhost,argv[1]);
return 1;
}
/* This is a kludge. It really ought to be table driven */
switch(tolower(argv[2][0])){
case 'n':
hardware = ARP_NETROM;
break;
case 'e': /* "ether" */
hardware = ARP_ETHER;
break;
case 'a': /* "ax25" */
switch(tolower(argv[2][1])) {
case 'x':
hardware = ARP_AX25;
break;
case 'r':
hardware = ARP_ARCNET;
break;
default:
hardware = 0;
break;
}
break;
case 'm': /* "mac appletalk" */
hardware = ARP_APPLETALK;
break;
default:
hardware = 0;
break;
}
if((ap = arp_lookup(hardware,addr)) == NULLARP)
return -1;
arp_drop(ap);
return 0;
}
/* Flush all automatic entries in the arp cache */
static int
doarpflush(argc,argv,p)
int argc;
char *argv[];
void *p;
{
register struct arp_tab *ap;
struct arp_tab *aptmp;
int i;
for(i=0;i<HASHMOD;i++){
for(ap = Arp_tab[i];ap != NULLARP;ap = aptmp){
aptmp = ap->next;
if(dur_timer(&ap->timer) != 0)
arp_drop(ap);
}
}
return 0;
}
/* Dump ARP table */
static void
dumparp()
{
register int i;
register struct arp_tab *ap;
char e[128];
tprintf("received %u badtype %u bogus addr %u reqst in %u replies %u reqst out %u\n",
Arp_stat.recv,Arp_stat.badtype,Arp_stat.badaddr,Arp_stat.inreq,
Arp_stat.replies,Arp_stat.outreq);
tprintf("IP addr Type Time Q Addr\n");
for(i=0;i<HASHMOD;i++){
for(ap = Arp_tab[i];ap != (struct arp_tab *)NULL;ap = ap->next){
tprintf("%-16s",inet_ntoa(ap->ip_addr));
tprintf("%-15s",smsg(Arptypes,NHWTYPES,ap->hardware));
tprintf("%-5ld",read_timer(&ap->timer)/1000L);
if(ap->state == ARP_PENDING)
tprintf("%-2u",len_q(ap->pending));
else
tprintf(" ");
if(ap->state == ARP_VALID){
if(Arp_type[ap->hardware].format != NULL){
(*Arp_type[ap->hardware].format)(e,ap->hw_addr);
} else {
e[0] = '\0';
}
tprintf("%s",e);
} else {
tprintf("[unknown]");
}
if(ap->pub)
tprintf(" (published)");
if(tprintf("\n") == EOF)
return;
}
}
return;
}