route.c revision 98c297f2448fd8194cae16d213dfc9194180fa3f
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> 598c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang#include <stdarg.h> 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <ctype.h> 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/socket.h> 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <netinet/in.h> 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/if.h> 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/sockios.h> 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <arpa/inet.h> 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/route.h> 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1898c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wangstatic void die(const char *fmt, ...) 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 2098c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang va_list p; 2198c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang 2298c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang va_start(p, fmt); 2398c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang fprintf(stderr,"error(%s): ", strerror(errno)); 2498c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang fprintf(stderr, fmt, p); 2598c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang va_end(p); 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project exit(-1); 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic inline void init_sockaddr_in(struct sockaddr_in *sin, const char *addr) 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_family = AF_INET; 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_port = 0; 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_addr.s_addr = inet_addr(addr); 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define ADVANCE(argc, argv) do { argc--, argv++; } while(0) 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define EXPECT_NEXT(argc, argv) do { \ 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ADVANCE(argc, argv); \ 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (0 == argc) { \ 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project errno = EINVAL; \ 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project die("expecting one more argument"); \ 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } \ 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} while(0) 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 4598c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang/* current support the following routing entries */ 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* route add default dev wlan0 */ 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* route add default gw 192.168.20.1 dev wlan0 */ 4898c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang/* route add net 192.168.1.1 netmask 255.255.255.0 gw 172.24.192.10 */ 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint route_main(int argc, char *argv[]) 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int s,i; 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_in ina; 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(argc == 0) return 0; 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncpy(ifr.ifr_name, argv[0], IFNAMSIZ); 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr.ifr_name[IFNAMSIZ-1] = 0; 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ADVANCE(argc, argv); 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project die("cannot open control socket\n"); 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(argc > 0){ 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "add")) { 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "default")) { 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset((char *) &rt, 0, sizeof(struct rtentry)); 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dst.sa_family = AF_INET; 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "dev")) { 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_flags = RTF_UP | RTF_HOST; 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = argv[0]; 7898c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang if (ioctl(s, SIOCADDRT, &rt) < 0) die("SIOCADDRT\n"); 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }else if(!strcmp(argv[0], "gw")) { 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_flags = RTF_UP | RTF_GATEWAY; 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in((struct sockaddr_in *)&(rt.rt_genmask), "0.0.0.0"); 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(isdigit(argv[0][0])){ 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in((struct sockaddr_in *)&(rt.rt_gateway), argv[0]); 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project }else{ 8698c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang die("expecting an IP address for parameter \"gw\"\n"); 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strcmp(argv[0], "dev")) { 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project EXPECT_NEXT(argc, argv); 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = argv[0]; 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ioctl(s, SIOCADDRT, &rt) < 0){ 9398c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang die("SIOCADDRT\n"); 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 9798c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } else { 9898c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang char keywords[3][5] = { "net", "mask", "gw" }; 9998c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang struct sockaddr_in *paddr[3] = { &rt.rt_dst, &rt.rt_genmask, &rt.rt_gateway }; 10098c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang int k = 0; 10198c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang 10298c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang memset((char *) &rt, 0, sizeof(struct rtentry)); 10398c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang rt.rt_flags = RTF_UP | RTF_GATEWAY; 10498c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang do { 10598c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang if(!strcmp(argv[0], keywords[k])) { 10698c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang EXPECT_NEXT(argc, argv); 10798c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang if(isdigit(argv[0][0])) { 10898c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang init_sockaddr_in(paddr[k], argv[0]); 10998c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } else { 11098c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang die("expecting an IP/MASK address for parameter %s\n", keywords[k]); 11198c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } 11298c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang if(k < 2) EXPECT_NEXT(argc, argv); 11398c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } else { 11498c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang die("expecting keyword(s)\n"); 11598c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } 11698c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } while(++k < 3); 11798c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang if(ioctl(s, SIOCADDRT, &rt) < 0) { 11898c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang die("SIOCADDRT\n"); 11998c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } 12098c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ADVANCE(argc, argv); 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 127