171 lines
3.5 KiB
C
171 lines
3.5 KiB
C
/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2011-2014 Intel Corporation
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/hci.h>
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#include "monitor/mainloop.h"
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#include "monitor/bt.h"
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#include "btdev.h"
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#include "vhci.h"
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#define uninitialized_var(x) x = x
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struct vhci {
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enum vhci_type type;
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int fd;
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struct btdev *btdev;
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};
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static void vhci_destroy(void *user_data)
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{
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struct vhci *vhci = user_data;
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btdev_destroy(vhci->btdev);
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close(vhci->fd);
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free(vhci);
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}
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static void vhci_write_callback(const void *data, uint16_t len, void *user_data)
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{
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struct vhci *vhci = user_data;
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ssize_t written;
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written = write(vhci->fd, data, len);
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if (written < 0)
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return;
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}
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static void vhci_read_callback(int fd, uint32_t events, void *user_data)
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{
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struct vhci *vhci = user_data;
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unsigned char buf[4096];
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ssize_t len;
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if (events & (EPOLLERR | EPOLLHUP))
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return;
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len = read(vhci->fd, buf, sizeof(buf));
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if (len < 1)
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return;
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switch (buf[0]) {
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case BT_H4_CMD_PKT:
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case BT_H4_ACL_PKT:
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case BT_H4_SCO_PKT:
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btdev_receive_h4(vhci->btdev, buf, len);
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break;
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}
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}
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struct vhci *vhci_open(enum vhci_type type)
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{
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struct vhci *vhci;
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enum btdev_type uninitialized_var(btdev_type);
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unsigned char uninitialized_var(ctrl_type);
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unsigned char setup_cmd[2];
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static uint8_t id = 0x23;
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switch (type) {
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case VHCI_TYPE_BREDRLE:
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btdev_type = BTDEV_TYPE_BREDRLE;
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ctrl_type = HCI_BREDR;
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break;
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case VHCI_TYPE_BREDR:
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btdev_type = BTDEV_TYPE_BREDR;
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ctrl_type = HCI_BREDR;
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break;
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case VHCI_TYPE_LE:
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btdev_type = BTDEV_TYPE_LE;
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ctrl_type = HCI_BREDR;
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break;
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case VHCI_TYPE_AMP:
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btdev_type = BTDEV_TYPE_AMP;
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ctrl_type = HCI_AMP;
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break;
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}
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vhci = malloc(sizeof(*vhci));
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if (!vhci)
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return NULL;
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memset(vhci, 0, sizeof(*vhci));
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vhci->type = type;
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vhci->fd = open("/dev/vhci", O_RDWR | O_NONBLOCK);
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if (vhci->fd < 0) {
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free(vhci);
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return NULL;
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}
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setup_cmd[0] = HCI_VENDOR_PKT;
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setup_cmd[1] = ctrl_type;
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if (write(vhci->fd, setup_cmd, sizeof(setup_cmd)) < 0) {
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close(vhci->fd);
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free(vhci);
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return NULL;
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}
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vhci->btdev = btdev_create(btdev_type, id++);
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if (!vhci->btdev) {
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close(vhci->fd);
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free(vhci);
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return NULL;
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}
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btdev_set_send_handler(vhci->btdev, vhci_write_callback, vhci);
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if (mainloop_add_fd(vhci->fd, EPOLLIN, vhci_read_callback,
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vhci, vhci_destroy) < 0) {
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btdev_destroy(vhci->btdev);
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close(vhci->fd);
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free(vhci);
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return NULL;
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}
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return vhci;
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}
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void vhci_close(struct vhci *vhci)
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{
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if (!vhci)
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return;
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mainloop_remove_fd(vhci->fd);
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}
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