route.c revision dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0
1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <ctype.h> 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/socket.h> 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <netinet/in.h> 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/if.h> 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/sockios.h> 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <arpa/inet.h> 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/route.h> 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void die(const char *s) 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fprintf(stderr,"error: %s (%s)\n", s, strerror(errno)); 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project exit(-1); 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic inline void init_sockaddr_in(struct sockaddr_in *sin, const char *addr) 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_family = AF_INET; 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_port = 0; 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_addr.s_addr = inet_addr(addr); 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ADVANCE(argc, argv) do { argc--, argv++; } while(0) 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define EXPECT_NEXT(argc, argv) do { \ 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ADVANCE(argc, argv); \ 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (0 == argc) { \ 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = EINVAL; \ 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project die("expecting one more argument"); \ 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } \ 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} while(0) 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* current support two kinds of usage */ 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* route add default dev wlan0 */ 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* route add default gw 192.168.20.1 dev wlan0 */ 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint route_main(int argc, char *argv[]) 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int s,i; 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_in ina; 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(argc == 0) return 0; 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncpy(ifr.ifr_name, argv[0], IFNAMSIZ); 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr.ifr_name[IFNAMSIZ-1] = 0; 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ADVANCE(argc, argv); 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project die("cannot open control socket\n"); 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(argc > 0){ 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "add")) { 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "default")) { 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset((char *) &rt, 0, sizeof(struct rtentry)); 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dst.sa_family = AF_INET; 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "dev")) { 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_flags = RTF_UP | RTF_HOST; 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = argv[0]; 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ioctl(s, SIOCADDRT, &rt) < 0) die("SIOCADDRT"); 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }else if(!strcmp(argv[0], "gw")) { 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_flags = RTF_UP | RTF_GATEWAY; 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in((struct sockaddr_in *)&(rt.rt_genmask), "0.0.0.0"); 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(isdigit(argv[0][0])){ 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in((struct sockaddr_in *)&(rt.rt_gateway), argv[0]); 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }else{ 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project die("expecting an IP address for parameter \"gw\""); 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "dev")) { 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = argv[0]; 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ioctl(s, SIOCADDRT, &rt) < 0){ 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project die("SIOCADDRT"); 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ADVANCE(argc, argv); 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 98