GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) { GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; struct ifaddrs *ifap, *ifa; char err_msg[512]; if (getifaddrs(&ifap) < 0) { snprintf(err_msg, sizeof(err_msg), "getifaddrs failed: %s", strerror(errno)); error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); goto error; } for (ifa = ifap; ifa; ifa = ifa->ifa_next) { GuestNetworkInterfaceList *info; GuestIpAddressList **address_list = NULL, *address_item = NULL; char addr4[INET_ADDRSTRLEN]; char addr6[INET6_ADDRSTRLEN]; int sock; struct ifreq ifr; unsigned char *mac_addr; void *p; g_debug("Processing %s interface", ifa->ifa_name); info = guest_find_interface(head, ifa->ifa_name); if (!info) { info = g_malloc0(sizeof(*info)); info->value = g_malloc0(sizeof(*info->value)); info->value->name = g_strdup(ifa->ifa_name); if (!cur_item) { head = cur_item = info; } else { cur_item->next = info; cur_item = info; } } if (!info->value->has_hardware_address && ifa->ifa_flags & SIOCGIFHWADDR) { /* we haven't obtained HW address yet */ sock = socket(PF_INET, SOCK_STREAM, 0); if (sock == -1) { snprintf(err_msg, sizeof(err_msg), "failed to create socket: %s", strerror(errno)); error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); goto error; } memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, info->value->name, IF_NAMESIZE); if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { snprintf(err_msg, sizeof(err_msg), "failed to get MAC addres of %s: %s", ifa->ifa_name, strerror(errno)); error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); goto error; } mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; if (asprintf(&info->value->hardware_address, "%02x:%02x:%02x:%02x:%02x:%02x", (int) mac_addr[0], (int) mac_addr[1], (int) mac_addr[2], (int) mac_addr[3], (int) mac_addr[4], (int) mac_addr[5]) == -1) { snprintf(err_msg, sizeof(err_msg), "failed to format MAC: %s", strerror(errno)); error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); goto error; } info->value->has_hardware_address = true; close(sock); } if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET) { /* interface with IPv4 address */ address_item = g_malloc0(sizeof(*address_item)); address_item->value = g_malloc0(sizeof(*address_item->value)); p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { snprintf(err_msg, sizeof(err_msg), "inet_ntop failed : %s", strerror(errno)); error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); goto error; } address_item->value->ip_address = g_strdup(addr4); address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; if (ifa->ifa_netmask) { /* Count the number of set bits in netmask. * This is safe as '1' and '0' cannot be shuffled in netmask. */ p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); } } else if (ifa->ifa_addr && ifa->ifa_addr->sa_family == AF_INET6) { /* interface with IPv6 address */ address_item = g_malloc0(sizeof(*address_item)); address_item->value = g_malloc0(sizeof(*address_item->value)); p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { snprintf(err_msg, sizeof(err_msg), "inet_ntop failed : %s", strerror(errno)); error_set(errp, QERR_QGA_COMMAND_FAILED, err_msg); goto error; } address_item->value->ip_address = g_strdup(addr6); address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; if (ifa->ifa_netmask) { /* Count the number of set bits in netmask. * This is safe as '1' and '0' cannot be shuffled in netmask. */ p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; address_item->value->prefix = ctpop32(((uint32_t *) p)[0]) + ctpop32(((uint32_t *) p)[1]) + ctpop32(((uint32_t *) p)[2]) + ctpop32(((uint32_t *) p)[3]); } } if (!address_item) { continue; } address_list = &info->value->ip_addresses; while (*address_list && (*address_list)->next) { address_list = &(*address_list)->next; } if (!*address_list) { *address_list = address_item; } else { (*address_list)->next = address_item; } info->value->has_ip_addresses = true; } freeifaddrs(ifap); return head; error: freeifaddrs(ifap); qapi_free_GuestNetworkInterfaceList(head); return NULL; }