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