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/*
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include <errno.h>
#include <dirent.h>
#include <netinet/ether.h>
#include <netinet/if_ether.h>
#include <netutils/dhcp.h>
#include <netutils/ifc.h>
#include <stdio.h>
#include <stdlib.h>
void die(const char *reason)
{
perror(reason);
exit(1);
}
const char *ipaddr(in_addr_t addr)
{
struct in_addr in_addr;
in_addr.s_addr = addr;
return inet_ntoa(in_addr);
}
void usage(void)
{
fprintf(stderr,"usage: netcfg [<interface> {dhcp|up|down}]\n");
exit(1);
}
int dump_interface(const char *name)
{
unsigned addr, flags;
unsigned char hwbuf[ETH_ALEN];
int prefixLength;
if(ifc_get_info(name, &addr, &prefixLength, &flags)) {
return 0;
}
printf("%-8s %s ", name, flags & 1 ? "UP " : "DOWN");
printf("%40s", ipaddr(addr));
printf("/%-4d", prefixLength);
printf("0x%08x ", flags);
if (!ifc_get_hwaddr(name, hwbuf)) {
int i;
for(i=0; i < (ETH_ALEN-1); i++)
printf("%02x:", hwbuf[i]);
printf("%02x\n", hwbuf[i]);
} else {
printf("\n");
}
return 0;
}
int dump_interfaces(void)
{
DIR *d;
struct dirent *de;
d = opendir("/sys/class/net");
if(d == 0) return -1;
while((de = readdir(d))) {
if(de->d_name[0] == '.') continue;
dump_interface(de->d_name);
}
closedir(d);
return 0;
}
int set_hwaddr(const char *name, const char *asc) {
struct ether_addr *addr = ether_aton(asc);
if (!addr) {
printf("Failed to parse '%s'\n", asc);
return -1;
}
return ifc_set_hwaddr(name, addr->ether_addr_octet);
}
struct
{
const char *name;
int nargs;
void *func;
} CMDS[] = {
{ "dhcp", 1, do_dhcp },
{ "up", 1, ifc_up },
{ "down", 1, ifc_down },
{ "flhosts", 1, ifc_remove_host_routes },
{ "deldefault", 1, ifc_remove_default_route },
{ "hwaddr", 2, set_hwaddr },
{ 0, 0, 0 },
};
static int call_func(void *_func, unsigned nargs, char **args)
{
switch(nargs){
case 1: {
int (*func)(char *a0) = _func;
return func(args[0]);
}
case 2: {
int (*func)(char *a0, char *a1) = _func;
return func(args[0], args[1]);
}
case 3: {
int (*func)(char *a0, char *a1, char *a2) = _func;
return func(args[0], args[1], args[2]);
}
default:
return -1;
}
}
int main(int argc, char **argv)
{
char *iname;
int n;
if(ifc_init()) {
die("Cannot perform requested operation");
}
if(argc == 1) {
int result = dump_interfaces();
ifc_close();
return result;
}
if(argc < 3) usage();
iname = argv[1];
if(strlen(iname) > 16) usage();
argc -= 2;
argv += 2;
while(argc > 0) {
for(n = 0; CMDS[n].name; n++){
if(!strcmp(argv[0], CMDS[n].name)) {
char *cmdname = argv[0];
int nargs = CMDS[n].nargs;
argv[0] = iname;
if(argc < nargs) {
fprintf(stderr, "not enough arguments for '%s'\n", cmdname);
ifc_close();
exit(1);
}
if(call_func(CMDS[n].func, nargs, argv)) {
fprintf(stderr, "action '%s' failed (%s)\n", cmdname, strerror(errno));
ifc_close();
exit(1);
}
argc -= nargs;
argv += nargs;
goto done;
}
}
fprintf(stderr,"no such action '%s'\n", argv[0]);
usage();
done:
;
}
ifc_close();
return 0;
}
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