int
dbus_findalldevs(pcap_if_t **alldevsp, char *err_str)
{
if (pcap_add_if(alldevsp, "dbus-system", 0, "D-Bus system bus", err_str) < 0)
return -1;
if (pcap_add_if(alldevsp, "dbus-session", 0, "D-Bus session bus", err_str) < 0)
return -1;
return 0;
}
/*
* In Solaris, the "standard" mechanism" i.e SIOCGLIFCONF will only find
* network links that are plumbed and are up. dlpi_walk(3DLPI) will find
* additional network links present in the system.
*/
int
pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
{
int retv = 0;
linknamelist_t *entry, *next;
linkwalk_t lw = {NULL, 0};
int save_errno;
/* dlpi_walk() for loopback will be added here. */
dlpi_walk(list_interfaces, &lw, 0);
if (lw.lw_err != 0) {
snprintf(errbuf, PCAP_ERRBUF_SIZE,
"dlpi_walk: %s", pcap_strerror(lw.lw_err));
retv = -1;
goto done;
}
/* Add linkname if it does not exist on the list. */
for (entry = lw.lw_list; entry != NULL; entry = entry->lnl_next) {
if (pcap_add_if(alldevsp, entry->linkname, 0, NULL, errbuf) < 0)
retv = -1;
}
done:
save_errno = errno;
for (entry = lw.lw_list; entry != NULL; entry = next) {
next = entry->lnl_next;
free(entry);
}
errno = save_errno;
return (retv);
}
int canusb_findalldevs(pcap_if_t **alldevsp, char *err_str)
{
libusb_context *fdctx;
libusb_device** devs;
unsigned char sernum[65];
int cnt, i;
if (libusb_init(&fdctx) != 0) {
/*
* XXX - if this doesn't just mean "no USB file system mounted",
* perhaps we should report a real error rather than just
* saying "no CANUSB devices".
*/
return 0;
}
cnt = libusb_get_device_list(fdctx,&devs);
for(i=0;i<cnt;i++)
{
int ret;
/* Check if this device is interesting. */
struct libusb_device_descriptor desc;
libusb_device_handle *dh;
libusb_get_device_descriptor(devs[i],&desc);
if ((desc.idVendor != CANUSB_VID) || (desc.idProduct != CANUSB_PID))
continue; /* It is not, check next device */
/* It is! */
dh = NULL;
if ((ret = libusb_open(devs[i],&dh)) == 0)
{
char dev_name[30];
char dev_descr[50];
int n = libusb_get_string_descriptor_ascii(dh,desc.iSerialNumber,sernum,64);
sernum[n] = 0;
pcap_snprintf(dev_name, 30, CANUSB_IFACE"%s", sernum);
pcap_snprintf(dev_descr, 50, "CanUSB [%s]", sernum);
libusb_close(dh);
if (pcap_add_if(alldevsp, dev_name, 0, dev_descr, err_str) < 0)
{
libusb_free_device_list(devs,1);
libusb_exit(fdctx);
return -1;
}
}
}
libusb_free_device_list(devs,1);
libusb_exit(fdctx);
return 0;
}
/* facility to add an USB device to the device list*/
static int
usb_dev_add(pcap_if_t** alldevsp, int n, char *err_str)
{
char dev_name[10];
char dev_descr[30];
snprintf(dev_name, 10, USB_IFACE"%d", n);
snprintf(dev_descr, 30, "USB bus number %d", n);
if (pcap_add_if(alldevsp, dev_name, 0,
dev_descr, err_str) < 0)
return -1;
return 0;
}
int
bt_monitor_findalldevs(pcap_if_t **alldevsp, char *err_str)
{
int ret = 0;
if (pcap_add_if(alldevsp, INTERFACE_NAME, 0,
"Bluetooth Linux Monitor", err_str) < 0)
{
ret = -1;
}
return ret;
}
int canusb_findalldevs(pcap_if_t **alldevsp, char *err_str)
{
libusb_context *fdctx;
libusb_device** devs;
unsigned char sernum[65];
unsigned char buf[96];
int cnt, i;
libusb_init(&fdctx);
cnt = libusb_get_device_list(fdctx,&devs);
for(i=0;i<cnt;i++)
{
int ret;
// Check if this device is interesting.
struct libusb_device_descriptor desc;
libusb_get_device_descriptor(devs[i],&desc);
if ((desc.idVendor != CANUSB_VID) || (desc.idProduct != CANUSB_PID))
continue; //It is not, check next device
//It is!
libusb_device_handle *dh = NULL;
if (ret = libusb_open(devs[i],&dh) == 0)
{
char dev_name[30];
char dev_descr[50];
int n = libusb_get_string_descriptor_ascii(dh,desc.iSerialNumber,sernum,64);
sernum[n] = 0;
snprintf(dev_name, 30, CANUSB_IFACE"%s", sernum);
snprintf(dev_descr, 50, "CanUSB [%s]", sernum);
libusb_close(dh);
if (pcap_add_if(alldevsp, dev_name, 0, dev_descr, err_str) < 0)
{
libusb_free_device_list(devs,1);
return -1;
}
}
}
libusb_free_device_list(devs,1);
libusb_exit(fdctx);
return 0;
}
int
pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
{
#ifdef HAVE_SOLARIS
int fd;
union {
u_int nunits;
char pad[516]; /* XXX - must be at least 513; is 516
in "atmgetunits" */
} buf;
char baname[2+1+1];
u_int i;
/*
* We may have to do special magic to get ATM devices.
*/
if ((fd = open("/dev/ba", O_RDWR)) < 0) {
/*
* We couldn't open the "ba" device.
* For now, just give up; perhaps we should
* return an error if the problem is neither
* a "that device doesn't exist" error (ENOENT,
* ENXIO, etc.) or a "you're not allowed to do
* that" error (EPERM, EACCES).
*/
return (0);
}
if (strioctl(fd, A_GET_UNITS, sizeof(buf), (char *)&buf) < 0) {
snprintf(errbuf, PCAP_ERRBUF_SIZE, "A_GET_UNITS: %s",
pcap_strerror(errno));
return (-1);
}
for (i = 0; i < buf.nunits; i++) {
snprintf(baname, sizeof baname, "ba%u", i);
if (pcap_add_if(alldevsp, baname, 0, NULL, errbuf) < 0)
return (-1);
}
#endif
return (0);
}
int
pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf)
{
pcap_if_t *devlist = NULL;
register int fd;
register struct ifreq *ifrp, *ifend, *ifnext;
int n;
struct ifconf ifc;
char *buf = NULL;
unsigned buf_size;
struct ifreq ifrflags, ifrnetmask, ifrbroadaddr, ifrdstaddr;
struct sockaddr *netmask, *broadaddr, *dstaddr;
int ret = 0;
/*
* Create a socket from which to fetch the list of interfaces.
*/
fd = socket(AF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"socket: %s", pcap_strerror(errno));
return (-1);
}
/*
* Start with an 8K buffer, and keep growing the buffer until
* we get the entire interface list or fail to get it for some
* reason other than EINVAL (which is presumed here to mean
* "buffer is too small").
*/
buf_size = 8192;
for (;;) {
buf = malloc(buf_size);
if (buf == NULL) {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"malloc: %s", pcap_strerror(errno));
(void)close(fd);
return (-1);
}
ifc.ifc_len = buf_size;
ifc.ifc_buf = buf;
memset(buf, 0, buf_size);
if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0
&& errno != EINVAL) {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"SIOCGIFCONF: %s", pcap_strerror(errno));
(void)close(fd);
free(buf);
return (-1);
}
if (ifc.ifc_len < buf_size)
break;
free(buf);
buf_size *= 2;
}
ifrp = (struct ifreq *)buf;
ifend = (struct ifreq *)(buf + ifc.ifc_len);
for (; ifrp < ifend; ifrp = ifnext) {
n = SA_LEN(&ifrp->ifr_addr) + sizeof(ifrp->ifr_name);
if (n < sizeof(*ifrp))
ifnext = ifrp + 1;
else
ifnext = (struct ifreq *)((char *)ifrp + n);
/*
* Get the flags for this interface, and skip it if it's
* not up.
*/
strncpy(ifrflags.ifr_name, ifrp->ifr_name,
sizeof(ifrflags.ifr_name));
if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifrflags) < 0) {
if (errno == ENXIO)
continue;
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"SIOCGIFFLAGS: %.*s: %s",
(int)sizeof(ifrflags.ifr_name),
ifrflags.ifr_name,
pcap_strerror(errno));
ret = -1;
break;
}
if (!(ifrflags.ifr_flags & IFF_UP))
continue;
/*
* Get the netmask for this address on this interface.
*/
strncpy(ifrnetmask.ifr_name, ifrp->ifr_name,
sizeof(ifrnetmask.ifr_name));
memcpy(&ifrnetmask.ifr_addr, &ifrp->ifr_addr,
sizeof(ifrnetmask.ifr_addr));
if (ioctl(fd, SIOCGIFNETMASK, (char *)&ifrnetmask) < 0) {
if (errno == EADDRNOTAVAIL) {
/*
* Not available.
*/
netmask = NULL;
} else {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"SIOCGIFNETMASK: %.*s: %s",
(int)sizeof(ifrnetmask.ifr_name),
ifrnetmask.ifr_name,
pcap_strerror(errno));
ret = -1;
break;
}
} else
netmask = &ifrnetmask.ifr_addr;
/*
* Get the broadcast address for this address on this
* interface (if any).
*/
if (ifrflags.ifr_flags & IFF_BROADCAST) {
strncpy(ifrbroadaddr.ifr_name, ifrp->ifr_name,
sizeof(ifrbroadaddr.ifr_name));
memcpy(&ifrbroadaddr.ifr_addr, &ifrp->ifr_addr,
sizeof(ifrbroadaddr.ifr_addr));
if (ioctl(fd, SIOCGIFBRDADDR,
(char *)&ifrbroadaddr) < 0) {
if (errno == EADDRNOTAVAIL) {
/*
* Not available.
*/
broadaddr = NULL;
} else {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"SIOCGIFBRDADDR: %.*s: %s",
(int)sizeof(ifrbroadaddr.ifr_name),
ifrbroadaddr.ifr_name,
pcap_strerror(errno));
ret = -1;
break;
}
} else
broadaddr = &ifrbroadaddr.ifr_broadaddr;
} else {
/*
* Not a broadcast interface, so no broadcast
* address.
*/
broadaddr = NULL;
}
/*
* Get the destination address for this address on this
* interface (if any).
*/
if (ifrflags.ifr_flags & IFF_POINTOPOINT) {
strncpy(ifrdstaddr.ifr_name, ifrp->ifr_name,
sizeof(ifrdstaddr.ifr_name));
memcpy(&ifrdstaddr.ifr_addr, &ifrp->ifr_addr,
sizeof(ifrdstaddr.ifr_addr));
if (ioctl(fd, SIOCGIFDSTADDR,
(char *)&ifrdstaddr) < 0) {
if (errno == EADDRNOTAVAIL) {
/*
* Not available.
*/
dstaddr = NULL;
} else {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"SIOCGIFDSTADDR: %.*s: %s",
(int)sizeof(ifrdstaddr.ifr_name),
ifrdstaddr.ifr_name,
pcap_strerror(errno));
ret = -1;
break;
}
} else
dstaddr = &ifrdstaddr.ifr_dstaddr;
} else
dstaddr = NULL;
/*
* Add information for this address to the list.
*/
if (add_addr_to_iflist(&devlist, ifrp->ifr_name,
ifrflags.ifr_flags, &ifrp->ifr_addr,
netmask, broadaddr, dstaddr, errbuf) < 0) {
ret = -1;
break;
}
}
free(buf);
#ifdef HAVE_PROC_NET_DEV
if (ret != -1) {
/*
* We haven't had any errors yet; now read "/proc/net/dev",
* and add to the list of interfaces all interfaces listed
* there that we don't already have, because, on Linux,
* SIOCGIFCONF reports only interfaces with IPv4 addresses,
* so you need to read "/proc/net/dev" to get the names of
* the rest of the interfaces.
*/
ret = scan_proc_net_dev(&devlist, fd, errbuf);
}
#endif
(void)close(fd);
if (ret != -1) {
/*
* We haven't had any errors yet; add the "any" device,
* if we can open it.
*/
if (pcap_add_if(&devlist, "any", 0, any_descr, errbuf) < 0) {
/*
* Oops, we had a fatal error.
*/
ret = -1;
}
}
if (ret == -1) {
/*
* We had an error; free the list we've been constructing.
*/
if (devlist != NULL) {
pcap_freealldevs(devlist);
devlist = NULL;
}
}
*alldevsp = devlist;
return (ret);
}
/*
* Get from "/proc/net/dev" all interfaces listed there; if they're
* already in the list of interfaces we have, that won't add another
* instance, but if they're not, that'll add them.
*
* We don't bother getting any addresses for them; it appears you can't
* use SIOCGIFADDR on Linux to get IPv6 addresses for interfaces, and,
* although some other types of addresses can be fetched with SIOCGIFADDR,
* we don't bother with them for now.
*
* We also don't fail if we couldn't open "/proc/net/dev"; we just leave
* the list of interfaces as is.
*/
static int
scan_proc_net_dev(pcap_if_t **devlistp, int fd, char *errbuf)
{
FILE *proc_net_f;
char linebuf[512];
int linenum;
unsigned char *p;
char name[512]; /* XXX - pick a size */
char *q, *saveq;
struct ifreq ifrflags;
int ret = 0;
proc_net_f = fopen("/proc/net/dev", "r");
if (proc_net_f == NULL)
return (0);
for (linenum = 1;
fgets(linebuf, sizeof linebuf, proc_net_f) != NULL; linenum++) {
/*
* Skip the first two lines - they're headers.
*/
if (linenum <= 2)
continue;
p = &linebuf[0];
/*
* Skip leading white space.
*/
while (*p != '\0' && isspace(*p))
p++;
if (*p == '\0' || *p == '\n')
continue; /* blank line */
/*
* Get the interface name.
*/
q = &name[0];
while (*p != '\0' && !isspace(*p)) {
if (*p == ':') {
/*
* This could be the separator between a
* name and an alias number, or it could be
* the separator between a name with no
* alias number and the next field.
*
* If there's a colon after digits, it
* separates the name and the alias number,
* otherwise it separates the name and the
* next field.
*/
saveq = q;
while (isdigit(*p))
*q++ = *p++;
if (*p != ':') {
/*
* That was the next field,
* not the alias number.
*/
q = saveq;
}
break;
} else
*q++ = *p++;
}
*q = '\0';
/*
* Get the flags for this interface, and skip it if
* it's not up.
*/
strncpy(ifrflags.ifr_name, name, sizeof(ifrflags.ifr_name));
if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifrflags) < 0) {
if (errno == ENXIO)
continue;
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"SIOCGIFFLAGS: %.*s: %s",
(int)sizeof(ifrflags.ifr_name),
ifrflags.ifr_name,
pcap_strerror(errno));
ret = -1;
break;
}
if (!(ifrflags.ifr_flags & IFF_UP))
continue;
/*
* Add an entry for this interface, with no addresses.
*/
if (pcap_add_if(devlistp, name, ifrflags.ifr_flags, NULL,
errbuf) == -1) {
/*
* Failure.
*/
ret = -1;
break;
}
}
if (ret != -1) {
/*
* Well, we didn't fail for any other reason; did we
* fail due to an error reading the file?
*/
if (ferror(proc_net_f)) {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"Error reading /proc/net/dev: %s",
pcap_strerror(errno));
ret = -1;
}
}
(void)fclose(proc_net_f);
return (ret);
}
int
pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf)
{
pcap_if_t *devlist = NULL;
struct ifaddrs *ifap, *ifa;
struct sockaddr *broadaddr, *dstaddr;
int ret = 0;
/*
* Get the list of interface addresses.
*
* Note: this won't return information about interfaces
* with no addresses; are there any such interfaces
* that would be capable of receiving packets?
* (Interfaces incapable of receiving packets aren't
* very interesting from libpcap's point of view.)
*
* LAN interfaces will probably have link-layer
* addresses; I don't know whether all implementations
* of "getifaddrs()" now, or in the future, will return
* those.
*/
if (getifaddrs(&ifap) != 0) {
(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
"getifaddrs: %s", pcap_strerror(errno));
return (-1);
}
for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
/*
* Is this interface up?
*/
if (!(ifa->ifa_flags & IFF_UP)) {
/*
* No, so don't add it to the list.
*/
continue;
}
/*
* "ifa_broadaddr" may be non-null even on
* non-broadcast interfaces; "ifa_dstaddr"
* was, on at least one FreeBSD 4.1 system,
* non-null on a non-point-to-point
* interface.
*/
if (ifa->ifa_flags & IFF_BROADCAST)
broadaddr = ifa->ifa_broadaddr;
else
broadaddr = NULL;
if (ifa->ifa_flags & IFF_POINTOPOINT)
dstaddr = ifa->ifa_dstaddr;
else
dstaddr = NULL;
/*
* Add information for this address to the list.
*/
if (add_addr_to_iflist(&devlist, ifa->ifa_name,
ifa->ifa_flags, ifa->ifa_addr, ifa->ifa_netmask,
broadaddr, dstaddr, errbuf) < 0) {
ret = -1;
break;
}
}
freeifaddrs(ifap);
if (ret != -1) {
/*
* We haven't had any errors yet; add the "any" device,
* if we can open it.
*/
if (pcap_add_if(&devlist, "any", 0, any_descr, errbuf) < 0)
ret = -1;
}
if (ret == -1) {
/*
* We had an error; free the list we've been constructing.
*/
if (devlist != NULL) {
pcap_freealldevs(devlist);
devlist = NULL;
}
}
*alldevsp = devlist;
return (ret);
}
extern "C" int
pcap_platform_finddevs(pcap_if_t** _allDevices, char* errorBuffer)
{
// we need a socket to talk to the networking stack
int socket = ::socket(AF_INET, SOCK_DGRAM, 0);
if (socket < 0) {
snprintf(errorBuffer, PCAP_ERRBUF_SIZE,
"The networking stack doesn't seem to be available.\n");
return -1;
}
// get a list of all interfaces
ifconf config;
config.ifc_len = sizeof(config.ifc_value);
if (ioctl(socket, SIOCGIFCOUNT, &config, sizeof(struct ifconf)) < 0) {
close(socket);
return -1;
}
uint32 count = (uint32)config.ifc_value;
if (count == 0) {
snprintf(errorBuffer, PCAP_ERRBUF_SIZE,
"There are no interfaces defined!\n");
close(socket);
return -1;
}
void* buffer = malloc(count * sizeof(struct ifreq));
if (buffer == NULL) {
snprintf(errorBuffer, PCAP_ERRBUF_SIZE, "Out of memory.\n");
close(socket);
return -1;
}
config.ifc_len = count * sizeof(struct ifreq);
config.ifc_buf = buffer;
if (ioctl(socket, SIOCGIFCONF, &config, sizeof(struct ifconf)) < 0) {
close(socket);
return -1;
}
ifreq* interface = (ifreq*)buffer;
for (uint32 i = 0; i < count; i++) {
int flags = 0;
// get interface type
int linkSocket = ::socket(AF_LINK, SOCK_DGRAM, 0);
if (linkSocket < 0) {
fprintf(stderr, "No link level: %s\n", strerror(errno));
} else {
struct ifreq request;
if (!prepare_request(request, interface->ifr_name)) {
snprintf(errorBuffer, PCAP_ERRBUF_SIZE,
"Interface name \"%s\" is too long.", interface->ifr_name);
close(linkSocket);
close(socket);
return -1;
}
if (ioctl(socket, SIOCGIFPARAM, &request, sizeof(struct ifreq))
== 0) {
prepare_request(request, request.ifr_parameter.device);
if (ioctl(linkSocket, SIOCGIFADDR, &request,
sizeof(struct ifreq)) == 0) {
sockaddr_dl &link = *(sockaddr_dl*)&request.ifr_addr;
if (link.sdl_type == IFT_LOOP)
flags = IFF_LOOPBACK;
}
}
close(linkSocket);
}
pcap_add_if(_allDevices, interface->ifr_name, flags, NULL, errorBuffer);
interface = (ifreq *)((addr_t)interface + IF_NAMESIZE
+ interface->ifr_addr.sa_len);
}
free(buffer);
close(socket);
return 0;
}
int
bt_findalldevs(pcap_if_t **alldevsp, char *err_str)
{
struct hci_dev_list_req *dev_list;
struct hci_dev_req *dev_req;
int i, sock;
int ret = 0;
sock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (sock < 0)
{
/* if bluetooth is not supported this this is not fatal*/
if (errno == EAFNOSUPPORT)
return 0;
snprintf(err_str, PCAP_ERRBUF_SIZE,
"Can't open raw Bluetooth socket: %s", strerror(errno));
return -1;
}
dev_list = malloc(HCI_MAX_DEV * sizeof(*dev_req) + sizeof(*dev_list));
if (!dev_list)
{
snprintf(err_str, PCAP_ERRBUF_SIZE, "Can't allocate %zu bytes for Bluetooth device list",
HCI_MAX_DEV * sizeof(*dev_req) + sizeof(*dev_list));
ret = -1;
goto done;
}
dev_list->dev_num = HCI_MAX_DEV;
if (ioctl(sock, HCIGETDEVLIST, (void *) dev_list) < 0)
{
snprintf(err_str, PCAP_ERRBUF_SIZE,
"Can't get Bluetooth device list via ioctl: %s",
strerror(errno));
ret = -1;
goto free;
}
dev_req = dev_list->dev_req;
for (i = 0; i < dev_list->dev_num; i++, dev_req++) {
char dev_name[20], dev_descr[30];
snprintf(dev_name, 20, BT_IFACE"%d", dev_req->dev_id);
snprintf(dev_descr, 30, "Bluetooth adapter number %d", i);
if (pcap_add_if(alldevsp, dev_name, 0,
dev_descr, err_str) < 0)
{
ret = -1;
break;
}
}
free:
free(dev_list);
done:
close(sock);
return ret;
}
