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IPCMD.C
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1993-08-09
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/* IP-related user commands */
#include <stdio.h>
#include "global.h"
#include "mbuf.h"
#include "internet.h"
#include "timer.h"
#include "netuser.h"
#include "iface.h"
#include "ip.h"
#include "cmdparse.h"
#include "commands.h"
#include "socket.h"
/* Dump a routing table entry */
static void near
dumproute(struct route *rp)
{
tprintf("%-17.17s%-4u",
rp->target ? inet_ntoa(rp->target) : "default",
rp->bits);
tprintf("%-7.7s%-17.17s",
rp->iface->name,
rp->gateway ? inet_ntoa(rp->gateway) : "");
tprintf("%-8lu%c %-7lu%lu\n",
rp->metric,
(rp->flags & RTPRIVATE) ? 'P' : ' ',
read_timer(&rp->timer)/1000L,
rp->uses);
return;
}
/* ------------------------ IP subcmds ------------------------ */
static int
doipaddr(int argc,char **argv,void *p)
{
int32 n;
if(argc < 2) {
tprintf("%s\n",inet_ntoa(Ip_addr));
} else if((n = resolve(argv[1])) == 0){
tprintf(Badhost,argv[1]);
return -1;
} else {
Ip_addr = n;
}
return 0;
}
static int
dortimer(int argc,char **argv,void *p)
{
return setlong(&ipReasmTimeout,"IP reasm timeout (sec)",argc,argv);
}
static int
doipstat(int argc,char **argv,void *p)
{
int i;
for(i = 1; i <= NUMIPMIB; i++){
tprintf("(%2u)ip%-18s%10lu",
i,Ip_mib[i].name,Ip_mib[i].value.integer);
tputs((i % 2) ? " " : "\n");
}
if((i % 2) == 0)
tputs("\n");
if(Reasmq != NULLREASM) {
struct reasm *rp;
struct frag *fp;
tputs("Reassembly fragments:\n");
for(rp = Reasmq; rp != NULLREASM; rp = rp->next){
tprintf("src %s",inet_ntoa(rp->source));
tprintf(" dest %s",inet_ntoa(rp->dest));
tprintf(" id %u pctl %u time %lu len %u\n",
rp->id,uchar(rp->protocol),read_timer(&rp->timer),rp->length);
for(fp = rp->fraglist; fp != NULLFRAG; fp = fp->next)
tprintf(" offset %u last %u\n",fp->offset,fp->last);
}
}
return 0;
}
static int
dottl(int argc,char **argv,void *p)
{
return setlong(&ipDefaultTTL,"IP TTL",argc,argv);
}
int
doip(int argc,char **argv,void *p)
{
static struct cmds Ipcmds[] = {
"address", doipaddr, 0, 0, NULLCHAR,
"rtimer", dortimer, 0, 0, NULLCHAR,
"status", doipstat, 0, 0, NULLCHAR,
"ttl", dottl, 0, 0, NULLCHAR,
NULLCHAR,
};
return subcmd(Ipcmds,argc,argv,p);
}
/* --------------------------- route subcmds ------------------------ */
/* Add an entry to the routing table
* E.g., "add 1.2.3.4 ax0 5.6.7.8 3"
*/
static int
doadd(int argc,char **argv,void *p)
{
struct iface *ifp;
int32 dest = 0, gateway = 0;
unsigned bits = 0;
int32 metric = (argc > 4) ? atol(argv[4]) : 1;
char private = (strncmp(argv[0],"addp",4) == 0) ? 1 : 0;
if((ifp = if_lookup(argv[2])) == NULLIF){
tprintf(Badif,argv[2]);
return 1;
}
if(strcmp(argv[1],"default") != 0) {
char *bitp;
/* If IP address is followed by an optional slash and
* a length field, (e.g., 128.96/16) get it;
* otherwise assume a full 32-bit address
*/
if((bitp = strchr(argv[1],'/')) != NULLCHAR){
/* Terminate address token for resolve() call */
*bitp++ = '\0';
bits = atoi(bitp);
} else {
bits = 32;
}
if((dest = resolve(argv[1])) == 0){
tprintf(Badhost,argv[1]);
return 1;
}
}
if(argc > 3) {
if((gateway = resolve(argv[3])) == 0){
tprintf(Badhost,argv[3]);
return 1;
}
}
if(rt_add(dest,bits,gateway,ifp,metric,0,private) == NULLROUTE)
tputs("Can't add route\n");
return 0;
}
/* Drop an entry from the routing table
* E.g., "drop 128.96/16
*/
static int
dodrop(int argc,char **argv,void *p)
{
unsigned bits = 0;
int32 dest = 0;
if(strcmp(argv[1],"default") != 0) {
char *bitp;
/* If IP address is followed by an optional slash and length field,
* (e.g., 128.96/16) get it; otherwise assume a full 32-bit address
*/
if((bitp = strchr(argv[1],'/')) != NULLCHAR){
*bitp++ = '\0';
bits = atoi(bitp);
} else {
bits = 32;
}
if((dest = resolve(argv[1])) == 0) {
tprintf(Badhost,argv[1]);
return 1;
}
}
return rt_drop(dest,bits);
}
/* Force a timeout on all temporary routes */
static int
doflush(int argc,char **argv,void *p)
{
struct route *rp, *rptmp;
if(R_default.timer.state == TIMER_RUN)
rt_drop(0,0); /* Drop default route */
for(rp = Routes; rp != NULLROUTE; rp = rptmp) {
rptmp = rp->next;
if(rp->timer.state == TIMER_RUN)
rt_drop(rp->target,rp->bits);
}
return 0;
}
static int
dolook(int argc,char **argv,void *p)
{
struct route *rp;
int32 addr;
if((addr = resolve(argv[1])) == 0) {
tprintf(Badhost,argv[1]);
return 1;
}
if((rp = rt_lookup(addr)) == NULLROUTE){
tprintf("Host %s (%s) unreachable\n",argv[1],inet_ntoa(addr));
return 1;
}
dumproute(rp);
return 0;
}
/* Display and/or manipulate routing table */
int
doroute(int argc,char **argv,void *p)
{
struct route *rp;
struct cmds Rtcmds[] = {
"add", doadd, 0, 3,
"route add <dest addr>[/<bits>] <iface> [gateway] [metric]",
"addprivate", doadd, 0, 3,
"route addprivate <dest addr>[/<bits>] <iface> [gateway] [metric]",
"drop", dodrop, 0, 2,
"route drop <dest addr>[/<bits>]",
"flush", doflush, 0, 0,
NULLCHAR,
"lookup", dolook, 0, 2,
"route lookup <dest addr>",
NULLCHAR,
};
if(argc >= 2)
return subcmd(Rtcmds,argc,argv,p);
/* Dump IP routing table
* Dest Len Interface Gateway Use
* 192.001.002.003 32 sl0 192.002.003.004 0
*/
tputs("Dest Len Iface Gateway "
"Metric P Timer Use\n");
for(rp = Routes; rp != NULLROUTE; rp = rp->next)
dumproute(rp);
if(R_default.iface != NULLIF)
dumproute(&R_default);
return 0;
}