| 49 | } |
| 50 | |
| 51 | EipStatus ConfigureNetworkInterface(const char *const network_interface) { |
| 52 | |
| 53 | struct ifreq ifr; |
| 54 | size_t if_name_len = strlen(network_interface); |
| 55 | if(if_name_len < sizeof(ifr.ifr_name) ) { |
| 56 | memcpy(ifr.ifr_name, network_interface, if_name_len); |
| 57 | ifr.ifr_name[if_name_len] = 0; |
| 58 | } |
| 59 | else{ |
| 60 | OPENER_TRACE_INFO("interface name is too long\n"); |
| 61 | } |
| 62 | |
| 63 | int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP); |
| 64 | int ipaddr = 0; |
| 65 | int netaddr = 0; |
| 66 | if(ioctl(fd, SIOCGIFADDR, &ifr) == 0) { |
| 67 | ipaddr = ( (struct sockaddr_in *) &ifr.ifr_addr )->sin_addr.s_addr; |
| 68 | } else { |
| 69 | return kEipStatusError; |
| 70 | } |
| 71 | |
| 72 | if(ioctl(fd, SIOCGIFNETMASK, &ifr) == 0) { |
| 73 | netaddr = ( (struct sockaddr_in *) &ifr.ifr_netmask )->sin_addr.s_addr; |
| 74 | } else { |
| 75 | return kEipStatusError; |
| 76 | } |
| 77 | |
| 78 | interface_configuration_.ip_address = ipaddr; |
| 79 | interface_configuration_.network_mask = netaddr; |
| 80 | |
| 81 | char route_location[] = "/proc/net/route"; |
| 82 | |
| 83 | FILE *file_handle = fopen(route_location, "r"); |
| 84 | char file_buffer[100] = { 0 }; |
| 85 | char *gateway_string = NULL; |
| 86 | CipUdint gateway = 0; |
| 87 | |
| 88 | if(file_handle) { |
| 89 | char *needle_start = NULL; |
| 90 | while(NULL == |
| 91 | (needle_start = |
| 92 | strstr(file_buffer, |
| 93 | network_interface) ) && |
| 94 | fgets(file_buffer, sizeof(file_buffer), file_handle) ) { |
| 95 | } |
| 96 | |
| 97 | if(NULL != needle_start) { |
| 98 | char *strtok_save = NULL; |
| 99 | strtok_r(needle_start, " \t", &strtok_save); |
| 100 | strtok_r(needle_start, " \t", &strtok_save); |
| 101 | gateway_string = strtok_r(needle_start, "\t", &strtok_save); |
| 102 | } |
| 103 | else{ |
| 104 | OPENER_TRACE_ERR("network interface: %s not found", network_interface); |
| 105 | fclose(file_handle); |
| 106 | exit(1); |
| 107 | } |
| 108 | } |