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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>
#include <string.h>
static const char *ipaddr(in_addr_t addr)
{
struct in_addr in_addr;
in_addr.s_addr = addr;
return inet_ntoa(in_addr);
}
static void usage(void)
{
fprintf(stderr,"usage: netcfg [<interface> dhcp]\n");
exit(1);
}
static 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;
}
static 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 main(int argc, char **argv)
{
if(ifc_init()) {
perror("Cannot perform requested operation");
exit(1);
}
if(argc == 1) {
int result = dump_interfaces();
ifc_close();
return result;
}
if(argc != 3) usage();
char* iname = argv[1];
char* action = argv[2];
if(strlen(iname) > 16) usage();
if (!strcmp(action, "dhcp")) {
if (do_dhcp(iname)) {
fprintf(stderr, "dhcp failed: %s\n", strerror(errno));
ifc_close();
exit(1);
}
} else {
fprintf(stderr,"no such action '%s'\n", action);
usage();
}
ifc_close();
return 0;
}
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