* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote
- * products derived from this software without specific prior written
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
*
*/
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/libpcap/pcap-bt-linux.c,v 1.15 2008-07-01 07:05:54 guy Exp $ (LBL)";
-#endif
-
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
static int bt_setdirection_linux(pcap_t *, pcap_direction_t);
static int bt_stats_linux(pcap_t *, struct pcap_stat *);
-int
+/*
+ * Private data for capturing on Linux Bluetooth devices.
+ */
+struct pcap_bt {
+ int dev_id; /* device ID of device we're bound to */
+};
+
+int
bt_findalldevs(pcap_if_t **alldevsp, char *err_str)
{
- pcap_if_t *found_dev = *alldevsp;
struct hci_dev_list_req *dev_list;
struct hci_dev_req *dev_req;
int i, sock;
sock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (sock < 0)
{
- /* if bluetooth is not supported this this is not fatal*/
+ /* if bluetooth is not supported this this is not fatal*/
if (errno == EAFNOSUPPORT)
return 0;
- snprintf(err_str, PCAP_ERRBUF_SIZE,
+ pcap_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)
+ if (!dev_list)
{
- snprintf(err_str, PCAP_ERRBUF_SIZE, "Can't allocate %zu bytes for Bluetooth device list",
+ pcap_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)
+ if (ioctl(sock, HCIGETDEVLIST, (void *) dev_list) < 0)
{
- snprintf(err_str, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(err_str, PCAP_ERRBUF_SIZE,
"Can't get Bluetooth device list via ioctl: %s",
strerror(errno));
ret = -1;
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(&found_dev, dev_name, 0,
+
+ pcap_snprintf(dev_name, 20, BT_IFACE"%d", dev_req->dev_id);
+ pcap_snprintf(dev_descr, 30, "Bluetooth adapter number %d", i);
+
+ if (pcap_add_if(alldevsp, dev_name, 0,
dev_descr, err_str) < 0)
{
ret = -1;
/* OK, it's probably ours. */
*is_ours = 1;
- p = pcap_create_common(device, ebuf);
+ p = pcap_create_common(ebuf, sizeof (struct pcap_bt));
if (p == NULL)
return (NULL);
static int
bt_activate(pcap_t* handle)
{
+ struct pcap_bt *handlep = handle->priv;
struct sockaddr_hci addr;
int opt;
int dev_id;
int err = PCAP_ERROR;
/* get bt interface id */
- if (sscanf(handle->opt.source, BT_IFACE"%d", &dev_id) != 1)
+ if (sscanf(handle->opt.device, BT_IFACE"%d", &dev_id) != 1)
{
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
- "Can't get Bluetooth device index from %s",
- handle->opt.source);
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ "Can't get Bluetooth device index from %s",
+ handle->opt.device);
return PCAP_ERROR;
}
/* Initialize some components of the pcap structure. */
- handle->bufsize = handle->snapshot+BT_CTRL_SIZE+sizeof(pcap_bluetooth_h4_header);
- handle->offset = BT_CTRL_SIZE;
+ handle->bufsize = BT_CTRL_SIZE+sizeof(pcap_bluetooth_h4_header)+handle->snapshot;
handle->linktype = DLT_BLUETOOTH_HCI_H4_WITH_PHDR;
handle->read_op = bt_read_linux;
handle->getnonblock_op = pcap_getnonblock_fd;
handle->setnonblock_op = pcap_setnonblock_fd;
handle->stats_op = bt_stats_linux;
- handle->md.ifindex = dev_id;
-
+ handlep->dev_id = dev_id;
+
/* Create HCI socket */
handle->fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
if (handle->fd < 0) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"Can't create raw socket: %s", strerror(errno));
return PCAP_ERROR;
}
handle->buffer = malloc(handle->bufsize);
if (!handle->buffer) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate dump buffer: %s",
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate dump buffer: %s",
pcap_strerror(errno));
goto close_fail;
}
opt = 1;
if (setsockopt(handle->fd, SOL_HCI, HCI_DATA_DIR, &opt, sizeof(opt)) < 0) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"Can't enable data direction info: %s", strerror(errno));
goto close_fail;
}
opt = 1;
if (setsockopt(handle->fd, SOL_HCI, HCI_TIME_STAMP, &opt, sizeof(opt)) < 0) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"Can't enable time stamp: %s", strerror(errno));
goto close_fail;
}
- /* Setup filter, do not call hci function to avoid dependence on
+ /* Setup filter, do not call hci function to avoid dependence on
* external libs */
memset(&flt, 0, sizeof(flt));
- memset((void *) &flt.type_mask, 0xff, sizeof(flt.type_mask));
+ memset((void *) &flt.type_mask, 0xff, sizeof(flt.type_mask));
memset((void *) &flt.event_mask, 0xff, sizeof(flt.event_mask));
if (setsockopt(handle->fd, SOL_HCI, HCI_FILTER, &flt, sizeof(flt)) < 0) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"Can't set filter: %s", strerror(errno));
goto close_fail;
}
/* Bind socket to the HCI device */
addr.hci_family = AF_BLUETOOTH;
- addr.hci_dev = handle->md.ifindex;
+ addr.hci_dev = handlep->dev_id;
+#ifdef SOCKADDR_HCI_HAS_HCI_CHANNEL
addr.hci_channel = HCI_CHANNEL_RAW;
+#endif
if (bind(handle->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
- "Can't attach to device %d: %s", handle->md.ifindex,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ "Can't attach to device %d: %s", handlep->dev_id,
strerror(errno));
goto close_fail;
}
if (setsockopt(handle->fd, SOL_SOCKET, SO_RCVBUF,
&handle->opt.buffer_size,
sizeof(handle->opt.buffer_size)) == -1) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"SO_RCVBUF: %s", pcap_strerror(errno));
goto close_fail;
}
ssize_t ret;
struct pcap_pkthdr pkth;
pcap_bluetooth_h4_header* bthdr;
+ u_char *pktd;
+ int in = 0;
- bthdr = (pcap_bluetooth_h4_header*) &handle->buffer[handle->offset];
- iv.iov_base = &handle->buffer[handle->offset+sizeof(pcap_bluetooth_h4_header)];
+ pktd = (u_char *)handle->buffer + BT_CTRL_SIZE;
+ bthdr = (pcap_bluetooth_h4_header*)(void *)pktd;
+ iv.iov_base = pktd + sizeof(pcap_bluetooth_h4_header);
iv.iov_len = handle->snapshot;
-
+
memset(&msg, 0, sizeof(msg));
msg.msg_iov = &iv;
msg.msg_iovlen = 1;
msg.msg_control = handle->buffer;
- msg.msg_controllen = handle->offset;
+ msg.msg_controllen = BT_CTRL_SIZE;
/* ignore interrupt system call error */
do {
} while ((ret == -1) && (errno == EINTR));
if (ret < 0) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"Can't receive packet: %s", strerror(errno));
return -1;
}
pkth.caplen = ret;
- /* get direction and timestamp*/
+ /* get direction and timestamp*/
cmsg = CMSG_FIRSTHDR(&msg);
- int in=0;
while (cmsg) {
switch (cmsg->cmsg_type) {
case HCI_CMSG_DIR:
}
cmsg = CMSG_NXTHDR(&msg, cmsg);
}
- if ((in && (handle->direction == PCAP_D_OUT)) ||
+ if ((in && (handle->direction == PCAP_D_OUT)) ||
((!in) && (handle->direction == PCAP_D_IN)))
return 0;
pkth.caplen+=sizeof(pcap_bluetooth_h4_header);
pkth.len = pkth.caplen;
if (handle->fcode.bf_insns == NULL ||
- bpf_filter(handle->fcode.bf_insns, &handle->buffer[handle->offset],
- pkth.len, pkth.caplen)) {
- callback(user, &pkth, &handle->buffer[handle->offset]);
+ bpf_filter(handle->fcode.bf_insns, pktd, pkth.len, pkth.caplen)) {
+ callback(user, &pkth, pktd);
return 1;
}
return 0; /* didn't pass filter */
static int
bt_inject_linux(pcap_t *handle, const void *buf, size_t size)
{
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "inject not supported on "
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "inject not supported on "
"bluetooth devices");
return (-1);
-}
+}
-static int
+static int
bt_stats_linux(pcap_t *handle, struct pcap_stat *stats)
{
+ struct pcap_bt *handlep = handle->priv;
int ret;
struct hci_dev_info dev_info;
struct hci_dev_stats * s = &dev_info.stat;
- dev_info.dev_id = handle->md.ifindex;
-
+ dev_info.dev_id = handlep->dev_id;
+
/* ignore eintr */
do {
ret = ioctl(handle->fd, HCIGETDEVINFO, (void *)&dev_info);
} while ((ret == -1) && (errno == EINTR));
-
+
if (ret < 0) {
- snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
"Can't get stats via ioctl: %s", strerror(errno));
return (-1);
-
+
}
- /* we receive both rx and tx frames, so comulate all stats */
- stats->ps_recv = s->evt_rx + s->acl_rx + s->sco_rx + s->cmd_tx +
+ /* we receive both rx and tx frames, so comulate all stats */
+ stats->ps_recv = s->evt_rx + s->acl_rx + s->sco_rx + s->cmd_tx +
s->acl_tx +s->sco_tx;
stats->ps_drop = s->err_rx + s->err_tx;
stats->ps_ifdrop = 0;
return 0;
}
-static int
+static int
bt_setdirection_linux(pcap_t *p, pcap_direction_t d)
{
p->direction = d;
projects / libpcap / blobdiff