route.c revision 83ec181dc74d5dab4110e1895e62f1bdbf6d7d7a
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; 5483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat struct rtentry rt; 5583ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat struct sockaddr_in ina; 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 5783ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (!argc) 5883ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat return 0; 5983ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncpy(ifr.ifr_name, argv[0], IFNAMSIZ); 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr.ifr_name[IFNAMSIZ-1] = 0; 6283ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat ADVANCE(argc, argv); 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 6483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project die("cannot open control socket\n"); 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(argc > 0){ 6983ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (!strcmp(argv[0], "add")) { 7083ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 7183ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (!strcmp(argv[0], "default")) { 7283ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 7383ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat memset((char *) &rt, 0, sizeof(struct rtentry)); 7483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat rt.rt_dst.sa_family = AF_INET; 7583ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if(!strcmp(argv[0], "dev")) { 7683ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 7783ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat rt.rt_flags = RTF_UP | RTF_HOST; 7883ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat rt.rt_dev = argv[0]; 7983ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (ioctl(s, SIOCADDRT, &rt) < 0) 8083ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat die("SIOCADDRT\n"); 8183ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } else if (!strcmp(argv[0], "gw")) { 8283ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 8383ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat rt.rt_flags = RTF_UP | RTF_GATEWAY; 8483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat init_sockaddr_in((struct sockaddr_in *)&(rt.rt_genmask), "0.0.0.0"); 8583ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if(isdigit(argv[0][0])) { 8683ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat init_sockaddr_in((struct sockaddr_in *)&(rt.rt_gateway), argv[0]); 8783ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } else { 8883ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat die("expecting an IP address for parameter \"gw\"\n"); 8983ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } 9083ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 9183ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (!strcmp(argv[0], "dev")) { 9283ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 9383ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat rt.rt_dev = argv[0]; 9483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (ioctl(s, SIOCADDRT, &rt) < 0) { 9598c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang die("SIOCADDRT\n"); 9698c297f2448fd8194cae16d213dfc9194180fa3fChung-yih Wang } 9783ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } 9883ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } 9983ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } else { 10083ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat char keywords[3][10] = { "-net", "netmask", "gw" }; 10183ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat struct sockaddr_in *paddr[3] = { &rt.rt_dst, &rt.rt_genmask, &rt.rt_gateway }; 10283ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat int k = 0; 10383ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat 10483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat memset((char *) &rt, 0, sizeof(struct rtentry)); 10583ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat rt.rt_flags = RTF_UP | RTF_GATEWAY; 10683ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat do { 10783ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (!strcmp(argv[0], keywords[k])) { 10883ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 10983ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (isdigit(argv[0][0])) { 11083ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat init_sockaddr_in(paddr[k], argv[0]); 11183ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } else { 11283ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat die("expecting an IP/MASK address for parameter %s\n", keywords[k]); 11383ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } 11483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (k < 2) 11583ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat EXPECT_NEXT(argc, argv); 11683ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } else { 11783ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat die("expecting keyword(s)\n"); 11883ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } 11983ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } while (++k < 3); 12083ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat 12183ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat if (ioctl(s, SIOCADDRT, &rt) < 0) { 12283ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat die("SIOCADDRT\n"); 12383ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } 12483ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat } 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 12683ec181dc74d5dab4110e1895e62f1bdbf6d7d7aSan Mehat ADVANCE(argc, argv); 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 131