--- /dev/null
+/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2011-2012 Intel Corporation
+ * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <alloca.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/poll.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+
+#include <bluetooth/bluetooth.h>
+#include <bluetooth/hci.h>
+#include <bluetooth/hci_lib.h>
+#include <bluetooth/l2cap.h>
+
+#include "monitor/mainloop.h"
+
+static bool send_message(const bdaddr_t *src, const bdaddr_t *dst,
+ uint16_t psm)
+{
+ const unsigned char buf[] = { 0x42, 0x23 };
+ struct sockaddr_l2 addr;
+ ssize_t len;
+ int fd;
+
+ fd = socket(PF_BLUETOOTH, SOCK_DGRAM | SOCK_CLOEXEC, BTPROTO_L2CAP);
+ if (fd < 0) {
+ perror("Failed to create transmitter socket");
+ return false;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.l2_family = AF_BLUETOOTH;
+ bacpy(&addr.l2_bdaddr, src);
+
+ if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("Failed to bind transmitter socket");
+ close(fd);
+ return false;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.l2_family = AF_BLUETOOTH;
+ bacpy(&addr.l2_bdaddr, dst);
+ addr.l2_psm = htobs(psm);
+
+ if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("Failed to connect transmitter socket");
+ close(fd);
+ return false;
+ }
+
+ len = send(fd, buf, sizeof(buf), 0);
+ if (len < 0) {
+ perror("Failed to send message");
+ close(fd);
+ return false;
+ }
+
+ return true;
+}
+
+static void receiver_callback(int fd, uint32_t events, void *user_data)
+{
+ unsigned char buf[512];
+ struct sockaddr_l2 addr;
+ socklen_t addrlen = sizeof(addr);
+ char str[18];
+ ssize_t len, i;
+
+ if (events & (EPOLLERR | EPOLLHUP)) {
+ close(fd);
+ mainloop_remove_fd(fd);
+ return;
+ }
+
+ len = recvfrom(fd, buf, sizeof(buf), 0,
+ (struct sockaddr *) &addr, &addrlen);
+ if (len < 0) {
+ perror("Failed to receive data");
+ return;
+ }
+
+ if (addrlen > 0) {
+ ba2str(&addr.l2_bdaddr, str);
+ printf("RX Address: %s PSM: %d CID: %d\n", str,
+ btohs(addr.l2_psm), btohs(addr.l2_cid));
+ }
+
+ printf("RX Data:");
+ for (i = 0; i < len; i++)
+ printf(" 0x%02x", buf[i]);
+ printf("\n");
+}
+
+static bool create_receiver(const bdaddr_t *bdaddr, uint16_t psm)
+{
+ struct sockaddr_l2 addr;
+ int fd;
+
+ fd = socket(PF_BLUETOOTH, SOCK_DGRAM | SOCK_CLOEXEC, BTPROTO_L2CAP);
+ if (fd < 0) {
+ perror("Failed to create receiver socket");
+ return false;
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.l2_family = AF_BLUETOOTH;
+ bacpy(&addr.l2_bdaddr, bdaddr);
+ addr.l2_psm = htobs(psm);
+
+ if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ perror("Failed to bind receiver socket");
+ close(fd);
+ return false;
+ }
+
+ mainloop_add_fd(fd, EPOLLIN, receiver_callback, NULL, NULL);
+
+ return true;
+}
+
+static bool activate_controller(int fd, struct hci_dev_info *di)
+{
+ if (!hci_test_bit(HCI_UP, &di->flags)) {
+ char addr[18];
+
+ ba2str(&di->bdaddr, addr);
+ printf("Activating controller %s\n", addr);
+
+ if (ioctl(fd, HCIDEVUP, di->dev_id) < 0) {
+ if (errno != EALREADY) {
+ perror("Failed to bring up HCI device");
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+static bool enable_connections(int fd, struct hci_dev_info *di)
+{
+ if (!hci_test_bit(HCI_PSCAN, &di->flags)) {
+ struct hci_dev_req dr;
+ char addr[18];
+
+ ba2str(&di->bdaddr, addr);
+ printf("Enabling connections on %s\n", addr);
+
+ dr.dev_id = di->dev_id;
+ dr.dev_opt = SCAN_PAGE;
+
+ if (ioctl(fd, HCISETSCAN, (unsigned long) &dr) < 0) {
+ perror("Failed to enable connections");
+ return false;
+ }
+ }
+ return true;
+}
+
+static bdaddr_t bdaddr_src;
+static bdaddr_t bdaddr_dst;
+
+static bool find_controllers(void)
+{
+ struct hci_dev_list_req *dl;
+ struct hci_dev_req *dr;
+ bool result;
+ int fd, i;
+
+ fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
+ if (fd < 0) {
+ perror("Failed to open raw HCI socket");
+ return false;
+ }
+
+ dl = malloc(HCI_MAX_DEV * sizeof(struct hci_dev_req) + sizeof(uint16_t));
+ if (!dl) {
+ perror("Failed allocate HCI device request memory");
+ result = false;
+ goto done;
+ }
+
+ dl->dev_num = HCI_MAX_DEV;
+ dr = dl->dev_req;
+
+ if (ioctl(fd, HCIGETDEVLIST, (void *) dl) < 0) {
+ perror("Failed to get HCI device list");
+ result = false;
+ goto done;
+ }
+
+ result = true;
+
+ for (i = 0; i< dl->dev_num && result; i++) {
+ struct hci_dev_info di;
+
+ di.dev_id = (dr + i)->dev_id;
+
+ if (ioctl(fd, HCIGETDEVINFO, (void *) &di) < 0)
+ continue;
+
+ if (((di.type & 0x30) >> 4) != HCI_BREDR)
+ continue;
+
+ if (!bacmp(&bdaddr_src, BDADDR_ANY)) {
+ bacpy(&bdaddr_src, &di.bdaddr);
+ result = activate_controller(fd, &di);
+ } else if (!bacmp(&bdaddr_dst, BDADDR_ANY)) {
+ bacpy(&bdaddr_dst, &di.bdaddr);
+ result = activate_controller(fd, &di);
+ if (result)
+ result = enable_connections(fd, &di);
+ }
+ }
+
+done:
+ close(fd);
+ return result;
+}
+
+int main(int argc ,char *argv[])
+{
+ char addr_src[18], addr_dst[18];
+
+ bacpy(&bdaddr_src, BDADDR_ANY);
+ bacpy(&bdaddr_dst, BDADDR_ANY);
+
+ if (!find_controllers())
+ return EXIT_FAILURE;
+
+ if (!bacmp(&bdaddr_src, BDADDR_ANY) ||
+ !bacmp(&bdaddr_dst, BDADDR_ANY)) {
+ fprintf(stderr, "Two controllers are required\n");
+ return EXIT_FAILURE;
+ }
+
+ ba2str(&bdaddr_src, addr_src);
+ ba2str(&bdaddr_dst, addr_dst);
+
+ printf("%s -> %s\n", addr_src, addr_dst);
+
+ mainloop_init();
+
+ create_receiver(&bdaddr_dst, 0x0021);
+ send_message(&bdaddr_src, &bdaddr_dst, 0x0021);
+
+ return mainloop_run();
+}
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