9 #if defined(NMRPFLASH_WINDOWS)
10 #define NMRPFLASH_NETALIAS_PREFIX "net"
16 #if defined(NMRPFLASH_LINUX)
17 #include <linux/if_packet.h>
18 #elif defined (NMRPFLASH_OSX)
19 #include <net/if_dl.h>
24 #define MIN(a, b) ((a) < (b) ? (a) : (b))
31 #ifndef NMRPFLASH_WINDOWS
32 struct timeval timeout;
41 static int x_pcap_findalldevs(pcap_if_t **devs)
43 char errbuf[PCAP_ERRBUF_SIZE];
44 if (pcap_findalldevs(devs, errbuf) != 0) {
45 fprintf(stderr, "%s.\n", errbuf);
52 #ifndef NMRPFLASH_WINDOWS
53 static bool get_hwaddr(uint8_t *hwaddr, const char *intf)
55 struct ifaddrs *ifas, *ifa;
59 if (getifaddrs(&ifas) != 0) {
66 for (ifa = ifas; ifa; ifa = ifa->ifa_next) {
67 if (!strcmp(ifa->ifa_name, intf)) {
68 #ifdef NMRPFLASH_LINUX
69 if (ifa->ifa_addr->sa_family != AF_PACKET) {
72 src = ((struct sockaddr_ll*)ifa->ifa_addr)->sll_addr;
74 if (ifa->ifa_addr->sa_family != AF_LINK) {
77 src = LLADDR((struct sockaddr_dl*)ifa->ifa_addr);
79 memcpy(hwaddr, src, 6);
90 static void win_perror2(const char *msg, int err)
92 fprintf(stderr, "%s: error %d\n", msg, err);
95 static bool get_hwaddr(uint8_t *hwaddr, const char *intf)
97 PIP_ADAPTER_INFO adapters, adapter;
102 if ((ret = GetAdaptersInfo(NULL, &bufLen)) != ERROR_BUFFER_OVERFLOW) {
103 win_perror2("GetAdaptersInfo", ret);
107 adapters = malloc(bufLen);
113 if ((ret = GetAdaptersInfo(adapters, &bufLen) == NO_ERROR)) {
114 for (adapter = adapters; adapter; adapter = adapter->Next) {
115 if (adapter->Type != MIB_IF_TYPE_ETHERNET) {
119 #ifndef NMRPFLASH_WINDOWS
120 if (!strcmp(intf, adapter->AdapterName))
122 /* Interface names from WinPcap are "\Device\NPF_{GUID}", while
123 * AdapterName from GetAdaptersInfo is just "{GUID}".*/
124 if (strstr(intf, adapter->AdapterName))
127 if (adapter->AddressLength == 6) {
128 for (i = 0; i != 6; ++i) {
129 hwaddr[i] = adapter->Address[i];
138 win_perror2("GetAdaptersInfo", ret);
145 static const char *intf_alias_to_wpcap(const char *intf)
147 static char buf[128];
148 pcap_if_t *devs, *dev;
149 unsigned i = 0, dev_num = 0;
151 if (intf[0] == '\\') {
153 } else if (sscanf(intf, NMRPFLASH_NETALIAS_PREFIX "%u", &dev_num) != 1) {
154 fprintf(stderr, "Invalid interface alias.\n");
158 if (x_pcap_findalldevs(&devs) != 0) {
162 for (dev = devs; dev; dev = dev->next) {
165 printf("%s%u: %s\n", NMRPFLASH_NETALIAS_PREFIX, i, dev->name);
167 strncpy(buf, dev->name, sizeof(buf) - 1);
168 buf[sizeof(buf) - 1] = '\0';
173 pcap_freealldevs(devs);
176 fprintf(stderr, "Interface alias not found.\n");
183 static const char *intf_get_pretty_name(const char *intf)
185 static char buf[512];
191 guid = strstr(intf, "NPF_{");
198 snprintf(buf, sizeof(buf),
199 "System\\CurrentControlSet\\Control\\Network\\"
200 "{4D36E972-E325-11CE-BFC1-08002BE10318}\\"
201 "%s\\Connection", guid);
202 err = RegOpenKeyExA(HKEY_LOCAL_MACHINE, buf, 0, KEY_READ, &hkey);
203 if (err != ERROR_SUCCESS) {
204 win_perror2("RegOpenKeyExA", err);
209 err = RegQueryValueExA(hkey, "Name", NULL, NULL, (LPBYTE)buf, &len);
210 if (err == ERROR_SUCCESS) {
213 win_perror2("RegQueryValueExA", err);
223 inline uint8_t *ethsock_get_hwaddr(struct ethsock *sock)
228 struct ethsock *ethsock_create(const char *intf, uint16_t protocol)
230 char buf[PCAP_ERRBUF_SIZE];
231 struct bpf_program fp;
232 struct ethsock *sock;
235 sock = malloc(sizeof(struct ethsock));
241 #ifdef NMRPFLASH_WINDOWS
242 intf = intf_alias_to_wpcap(intf);
250 sock->pcap = pcap_open_live(intf, BUFSIZ, 1, 1, buf);
252 fprintf(stderr, "%s.\n", buf);
257 fprintf(stderr, "Warning: %s.\n", buf);
260 if (pcap_datalink(sock->pcap) != DLT_EN10MB) {
261 fprintf(stderr, "%s is not an ethernet interface.\n",
266 if (!get_hwaddr(sock->hwaddr, intf)) {
267 fprintf(stderr, "Failed to get MAC address of interface.\n");
271 #ifndef NMRPFLASH_WINDOWS
272 sock->fd = pcap_get_selectable_fd(sock->pcap);
273 if (sock->fd == -1) {
274 fprintf(stderr, "No selectable file descriptor available.\n");
278 sock->handle = pcap_getevent(sock->pcap);
280 fprintf(stderr, "No event handle available.\n");
285 snprintf(buf, sizeof(buf), "ether proto %04x", protocol);
286 err = pcap_compile(sock->pcap, &fp, buf, 0, 0);
288 pcap_perror(sock->pcap, "pcap_compile");
292 if ((err = pcap_setfilter(sock->pcap, &fp))) {
293 pcap_perror(sock->pcap, "pcap_setfilter");
300 pcap_close(sock->pcap);
306 ssize_t ethsock_recv(struct ethsock *sock, void *buf, size_t len)
308 struct pcap_pkthdr* hdr;
309 const u_char *capbuf;
311 #ifndef NMRPFLASH_WINDOWS
317 #ifndef NMRPFLASH_WINDOWS
318 if (sock->timeout.tv_sec || sock->timeout.tv_usec) {
320 FD_SET(sock->fd, &fds);
322 status = select(sock->fd + 1, &fds, NULL, NULL, &sock->timeout);
326 } else if (status == 0) {
332 ret = WaitForSingleObject(sock->handle, sock->timeout);
333 if (ret == WAIT_TIMEOUT) {
335 } else if (ret != WAIT_OBJECT_0) {
336 win_perror2("WaitForSingleObject", ret);
342 status = pcap_next_ex(sock->pcap, &hdr, &capbuf);
345 memcpy(buf, capbuf, MIN(len, hdr->caplen));
350 pcap_perror(sock->pcap, "pcap_next_ex");
353 fprintf(stderr, "pcap_next_ex: returned %d.\n", status);
358 int ethsock_send(struct ethsock *sock, void *buf, size_t len)
360 #ifdef NMRPFLASH_WINDOWS
361 if (pcap_sendpacket(sock->pcap, buf, len) == 0) {
364 pcap_perror(sock->pcap, "pcap_sendpacket");
368 if (pcap_inject(sock->pcap, buf, len) == len) {
371 pcap_perror(sock->pcap, "pcap_inject");
377 int ethsock_close(struct ethsock *sock)
379 pcap_close(sock->pcap);
384 int ethsock_set_timeout(struct ethsock *sock, unsigned msec)
386 #ifndef NMRPFLASH_WINDOWS
387 sock->timeout.tv_sec = msec / 1000;
388 sock->timeout.tv_usec = (msec % 1000) * 1000;
390 sock->timeout = msec;
395 static bool is_ethernet(const char *intf)
398 char errbuf[PCAP_ERRBUF_SIZE];
401 if ((pcap = pcap_create(intf, errbuf))) {
402 if (pcap_activate(pcap) == 0) {
403 ret = (pcap_datalink(pcap) == DLT_EN10MB);
411 int ethsock_list_all(void)
413 pcap_if_t *devs, *dev;
416 unsigned dev_num = 0;
417 #ifdef NMRPFLASH_WINDOWS
421 if (x_pcap_findalldevs(&devs) != 0) {
425 memset(hwaddr, 0, 6);
427 for (dev = devs; dev; dev = dev->next) {
428 if (!is_ethernet(dev->name)) {
430 printf("%s (not an ethernet device)\n",
436 if (!get_hwaddr(hwaddr, dev->name)) {
438 printf("%s (failed to get hardware address)\n",
444 #ifndef NMRPFLASH_WINDOWS
445 printf("%s", dev->name);
448 printf("%s%u", NMRPFLASH_NETALIAS_PREFIX, dev_num);
450 printf("%s", dev->name);
454 for (addr = dev->addresses; addr; addr = addr->next) {
455 if (addr->addr->sa_family == AF_INET) {
457 inet_ntoa(((struct sockaddr_in*)addr->addr)->sin_addr));
466 printf(" %02x:%02x:%02x:%02x:%02x:%02x", hwaddr[0], hwaddr[1],
467 hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5]);
469 #ifdef NMRPFLASH_WINDOWS
470 pretty = intf_get_pretty_name(dev->name);
472 printf(" (%s)", pretty);
473 } else if (dev->description) {
474 printf(" (%s)", dev->description);
483 printf("No suitable network interfaces found.\n");