korg/bluez
0
0
Fork 0
mirror of https://git.kernel.org/pub/scm/bluetooth/bluez.git synced 2024-11-26 21:54:33 +08:00
Code Issues Packages Projects Releases Wiki Activity
c506053c99
bluez/input/manager.c

1020 lines
24 KiB
C
Raw Blame History

/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2007 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 <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include <bluetooth/hidp.h>
#include <bluetooth/sdp.h>
#include <bluetooth/sdp_lib.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "dbus.h"
#include "logging.h"
#include "textfile.h"
#include "device.h"
#include "server.h"
#include "error.h"
#include "manager.h"
#include "storage.h"
static const char *pnp_uuid = "00001200-0000-1000-8000-00805f9b34fb";
static const char *hid_uuid = "00001124-0000-1000-8000-00805f9b34fb";
static const char *headset_uuid = "00001108-0000-1000-8000-00805f9b34fb";
struct pending_req {
char *adapter_path; /* Local adapter D-Bus path */
bdaddr_t src; /* Local adapter BT address */
bdaddr_t dst; /* Peer BT address */
DBusConnection *conn;
DBusMessage *msg;
sdp_record_t *pnp_rec;
sdp_record_t *hid_rec;
int ctrl_sock;
};
static GSList *device_paths = NULL; /* Input registered paths */
static DBusConnection *connection = NULL;
static struct pending_req *pending_req_new(DBusConnection *conn,
DBusMessage *msg, bdaddr_t *src, bdaddr_t *dst)
{
char adapter[18], adapter_path[32];
struct pending_req *pr;
int dev_id;
pr = g_try_new0(struct pending_req, 1);
if (!pr)
return NULL;
ba2str(src, adapter);
dev_id = hci_devid(adapter);
snprintf(adapter_path, 32, "/org/bluez/hci%d", dev_id);
pr->adapter_path = g_strdup(adapter_path);
bacpy(&pr->src, src);
bacpy(&pr->dst, dst);
pr->conn = dbus_connection_ref(conn);
pr->msg = dbus_message_ref(msg);
return pr;
}
static void pending_req_free(struct pending_req *pr)
{
if (!pr)
return;
if (pr->adapter_path)
g_free(pr->adapter_path);
if (pr->conn)
dbus_connection_unref(pr->conn);
if (pr->msg)
dbus_message_unref(pr->msg);
if (pr->pnp_rec)
sdp_record_free(pr->pnp_rec);
if (pr->hid_rec)
sdp_record_free(pr->hid_rec);
g_free(pr);
}
static int get_record(struct pending_req *pr, uint32_t handle,
DBusPendingCallNotifyFunction cb)
{
DBusMessage *msg;
DBusPendingCall *pending;
char addr[18];
const char *paddr = addr;
msg = dbus_message_new_method_call("org.bluez", pr->adapter_path,
"org.bluez.Adapter", "GetRemoteServiceRecord");
if (!msg)
return -1;
ba2str(&pr->dst, addr);
dbus_message_append_args(msg,
DBUS_TYPE_STRING, &paddr,
DBUS_TYPE_UINT32, &handle,
DBUS_TYPE_INVALID);
if (dbus_connection_send_with_reply(pr->conn, msg, &pending, -1) == FALSE) {
error("Can't send D-Bus message.");
return -1;
}
dbus_pending_call_set_notify(pending, cb, pr, NULL);
dbus_pending_call_unref(pending);
dbus_message_unref(msg);
return 0;
}
static int get_handles(struct pending_req *pr, const char *uuid,
DBusPendingCallNotifyFunction cb)
{
DBusMessage *msg;
DBusPendingCall *pending;
char addr[18];
const char *paddr = addr;
msg = dbus_message_new_method_call("org.bluez", pr->adapter_path,
"org.bluez.Adapter", "GetRemoteServiceHandles");
if (!msg)
return -1;
ba2str(&pr->dst, addr);
dbus_message_append_args(msg,
DBUS_TYPE_STRING, &paddr,
DBUS_TYPE_STRING, &uuid,
DBUS_TYPE_INVALID);
if (dbus_connection_send_with_reply(pr->conn, msg, &pending, -1) == FALSE) {
error("Can't send D-Bus message.");
return -1;
}
dbus_pending_call_set_notify(pending, cb, pr, NULL);
dbus_pending_call_unref(pending);
dbus_message_unref(msg);
return 0;
}
static void extract_hid_record(sdp_record_t *rec, struct hidp_connadd_req *req)
{
sdp_data_t *pdlist, *pdlist2;
uint8_t attr_val;
pdlist = sdp_data_get(rec, 0x0101);
pdlist2 = sdp_data_get(rec, 0x0102);
if (pdlist) {
if (pdlist2) {
if (strncmp(pdlist->val.str, pdlist2->val.str, 5)) {
strncpy(req->name, pdlist2->val.str, 127);
strcat(req->name, " ");
}
strncat(req->name, pdlist->val.str, 127 - strlen(req->name));
} else
strncpy(req->name, pdlist->val.str, 127);
} else {
pdlist2 = sdp_data_get(rec, 0x0100);
if (pdlist2)
strncpy(req->name, pdlist2->val.str, 127);
}
pdlist = sdp_data_get(rec, SDP_ATTR_HID_PARSER_VERSION);
req->parser = pdlist ? pdlist->val.uint16 : 0x0100;
pdlist = sdp_data_get(rec, SDP_ATTR_HID_DEVICE_SUBCLASS);
req->subclass = pdlist ? pdlist->val.uint8 : 0;
pdlist = sdp_data_get(rec, SDP_ATTR_HID_COUNTRY_CODE);
req->country = pdlist ? pdlist->val.uint8 : 0;
pdlist = sdp_data_get(rec, SDP_ATTR_HID_VIRTUAL_CABLE);
attr_val = pdlist ? pdlist->val.uint8 : 0;
if (attr_val)
req->flags |= (1 << HIDP_VIRTUAL_CABLE_UNPLUG);
pdlist = sdp_data_get(rec, SDP_ATTR_HID_BOOT_DEVICE);
attr_val = pdlist ? pdlist->val.uint8 : 0;
if (attr_val)
req->flags |= (1 << HIDP_BOOT_PROTOCOL_MODE);
pdlist = sdp_data_get(rec, SDP_ATTR_HID_DESCRIPTOR_LIST);
if (pdlist) {
pdlist = pdlist->val.dataseq;
pdlist = pdlist->val.dataseq;
pdlist = pdlist->next;
req->rd_data = g_try_malloc0(pdlist->unitSize);
if (req->rd_data) {
memcpy(req->rd_data, (unsigned char *) pdlist->val.str,
pdlist->unitSize);
req->rd_size = pdlist->unitSize;
}
}
}
static void extract_pnp_record(sdp_record_t *rec, struct hidp_connadd_req *req)
{
sdp_data_t *pdlist;
pdlist = sdp_data_get(rec, SDP_ATTR_VENDOR_ID);
req->vendor = pdlist ? pdlist->val.uint16 : 0x0000;
pdlist = sdp_data_get(rec, SDP_ATTR_PRODUCT_ID);
req->product = pdlist ? pdlist->val.uint16 : 0x0000;
pdlist = sdp_data_get(rec, SDP_ATTR_VERSION);
req->version = pdlist ? pdlist->val.uint16 : 0x0000;
}
static gboolean interrupt_connect_cb(GIOChannel *chan,
GIOCondition cond, struct pending_req *pr)
{
struct hidp_connadd_req hidp;
DBusMessage *reply;
const char *path;
int isk, ret, err;
socklen_t len;
isk = g_io_channel_unix_get_fd(chan);
if (cond & G_IO_NVAL) {
err = EHOSTDOWN;
isk = -1;
goto failed;
}
if (cond & (G_IO_HUP | G_IO_ERR)) {
err = EHOSTDOWN;
error("Hangup or error on HIDP interrupt socket");
goto failed;
}
len = sizeof(ret);
if (getsockopt(isk, SOL_SOCKET, SO_ERROR, &ret, &len) < 0) {
err = errno;
error("getsockopt(SO_ERROR): %s (%d)", strerror(err), err);
goto failed;
}
if (ret != 0) {
err = ret;
error("connect(): %s (%d)", strerror(ret), ret);
goto failed;
}
memset(&hidp, 0, sizeof(struct hidp_connadd_req));
extract_hid_record(pr->hid_rec, &hidp);
if (pr->pnp_rec)
extract_pnp_record(pr->pnp_rec, &hidp);
store_device_info(&pr->src, &pr->dst, &hidp);
if (input_device_register(pr->conn, &pr->src,
&pr->dst, &hidp, &path) < 0) {
err_failed(pr->conn, pr->msg, "path registration failed");
goto cleanup;
}
device_paths = g_slist_append(device_paths, g_strdup(path));
/* Replying to the requestor */
reply = dbus_message_new_method_return(pr->msg);
dbus_message_append_args(reply,
DBUS_TYPE_STRING, &path,
DBUS_TYPE_INVALID);
send_message_and_unref(pr->conn, reply);
goto cleanup;
failed:
err_connection_failed(pr->conn, pr->msg, strerror(err));
cleanup:
if (isk > 0)
close(isk);
close(pr->ctrl_sock);
pending_req_free(pr);
return FALSE;
}
static gboolean control_connect_cb(GIOChannel *chan,
GIOCondition cond, struct pending_req *pr)
{
int ret, csk, err;
socklen_t len;
csk = g_io_channel_unix_get_fd(chan);
if (cond & G_IO_NVAL) {
err = EHOSTDOWN;
csk = -1;
goto failed;
}
if (cond & (G_IO_HUP | G_IO_ERR)) {
err = EHOSTDOWN;
error("Hangup or error on HIDP control socket");
goto failed;
}
/* Set HID control channel */
pr->ctrl_sock = csk;
len = sizeof(ret);
if (getsockopt(csk, SOL_SOCKET, SO_ERROR, &ret, &len) < 0) {
err = errno;
error("getsockopt(SO_ERROR): %s (%d)", strerror(err), err);
goto failed;
}
if (ret != 0) {
err = ret;
error("connect(): %s (%d)", strerror(ret), ret);
goto failed;
}
/* Connect to the HID interrupt channel */
if (l2cap_connect(&pr->src, &pr->dst, L2CAP_PSM_HIDP_INTR,
(GIOFunc) interrupt_connect_cb, pr) < 0) {
err = errno;
error("L2CAP connect failed:%s (%d)", strerror(errno), errno);
goto failed;
}
return FALSE;
failed:
if (csk > 0)
close(csk);
err_connection_failed(pr->conn, pr->msg, strerror(err));
pending_req_free(pr);
return FALSE;
}
static void hid_record_reply(DBusPendingCall *call, void *data)
{
DBusMessage *reply = dbus_pending_call_steal_reply(call);
struct pending_req *pr = data;
DBusError derr;
uint8_t *rec_bin;
int len, scanned;
dbus_error_init(&derr);
if (dbus_set_error_from_message(&derr, reply)) {
if (dbus_error_has_name(&derr,
"org.bluez.Error.ConnectionAttemptFailed"))
err_connection_failed(pr->conn, pr->msg, derr.message);
else
err_not_supported(pr->conn, pr->msg);
error("GetRemoteServiceRecord failed: %s(%s)",
derr.name, derr.message);
goto fail;
}
if (!dbus_message_get_args(reply, &derr,
DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &rec_bin, &len,
DBUS_TYPE_INVALID)) {
err_not_supported(pr->conn, pr->msg);
error("%s: %s", derr.name, derr.message);
goto fail;
}
if (len == 0) {
err_not_supported(pr->conn, pr->msg);
error("Invalid HID service record length");
goto fail;
}
pr->hid_rec = sdp_extract_pdu(rec_bin, &scanned);
if (!pr->hid_rec) {
err_not_supported(pr->conn, pr->msg);
goto fail;
}
if (l2cap_connect(&pr->src, &pr->dst, L2CAP_PSM_HIDP_CTRL,
(GIOFunc) control_connect_cb, pr) < 0) {
int err = errno;
error("L2CAP connect failed:%s (%d)", strerror(err), err);
err_connection_failed(pr->conn, pr->msg, strerror(err));
goto fail;
}
dbus_message_unref(reply);
return;
fail:
dbus_error_free(&derr);
pending_req_free(pr);
dbus_message_unref(reply);
}
static void hid_handle_reply(DBusPendingCall *call, void *data)
{
DBusMessage *reply = dbus_pending_call_steal_reply(call);
struct pending_req *pr = data;
uint32_t *phandle;
DBusError derr;
int len;
dbus_error_init(&derr);
if (dbus_set_error_from_message(&derr, reply)) {
if (dbus_error_has_name(&derr,
"org.bluez.Error.ConnectionAttemptFailed"))
err_connection_failed(pr->conn, pr->msg, derr.message);
else
err_not_supported(pr->conn, pr->msg);
error("GetRemoteServiceHandles: %s(%s)",
derr.name, derr.message);
goto fail;
}
if (!dbus_message_get_args(reply, &derr,
DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &phandle, &len,
DBUS_TYPE_INVALID)) {
err_not_supported(pr->conn, pr->msg);
error("%s: %s", derr.name, derr.message);
goto fail;
}
if (len == 0) {
err_not_supported(pr->conn, pr->msg);
error("HID record handle not found");
goto fail;
}
if (get_record(pr, *phandle, hid_record_reply) < 0) {
err_not_supported(pr->conn, pr->msg);
error("HID service attribute request failed");
goto fail;
} else {
/* Wait record reply */
goto done;
}
fail:
dbus_error_free(&derr);
pending_req_free(pr);
done:
dbus_message_unref(reply);
}
static void pnp_record_reply(DBusPendingCall *call, void *data)
{
DBusMessage *reply = dbus_pending_call_steal_reply(call);
struct pending_req *pr = data;
DBusError derr;
uint8_t *rec_bin;
int len, scanned;
dbus_error_init(&derr);
if (dbus_set_error_from_message(&derr, reply)) {
if (dbus_error_has_name(&derr,
"org.bluez.Error.ConnectionAttemptFailed"))
err_connection_failed(pr->conn, pr->msg, derr.message);
else
err_not_supported(pr->conn, pr->msg);
error("GetRemoteServiceRecord: %s(%s)",
derr.name, derr.message);
goto fail;
}
if (!dbus_message_get_args(reply, &derr,
DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &rec_bin, &len,
DBUS_TYPE_INVALID)) {
err_not_supported(pr->conn, pr->msg);
error("%s: %s", derr.name, derr.message);
goto fail;
}
if (len == 0) {
err_not_supported(pr->conn, pr->msg);
error("Invalid PnP service record length");
goto fail;
}
pr->pnp_rec = sdp_extract_pdu(rec_bin, &scanned);
if (get_handles(pr, hid_uuid, hid_handle_reply) < 0) {
err_not_supported(pr->conn, pr->msg);
error("HID service search request failed");
goto fail;
} else {
/* Wait handle reply */
goto done;
}
fail:
dbus_error_free(&derr);
pending_req_free(pr);
done:
dbus_message_unref(reply);
}
static void pnp_handle_reply(DBusPendingCall *call, void *data)
{
DBusMessage *reply = dbus_pending_call_steal_reply(call);
struct pending_req *pr = data;
DBusError derr;
uint32_t *phandle;
int len;
dbus_error_init(&derr);
if (dbus_set_error_from_message(&derr, reply)) {
if (dbus_error_has_name(&derr,
"org.bluez.Error.ConnectionAttemptFailed"))
err_connection_failed(pr->conn, pr->msg, derr.message);
else
err_not_supported(pr->conn, pr->msg);
error("GetRemoteServiceHandles: %s(%s)",
derr.name, derr.message);
goto fail;
}
if (!dbus_message_get_args(reply, &derr,
DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &phandle, &len,
DBUS_TYPE_INVALID)) {
err_not_supported(pr->conn, pr->msg);
error("%s: %s", derr.name, derr.message);
goto fail;
}
if (len == 0) {
/* PnP is optional: Ignore it and request the HID handle */
if (get_handles(pr, hid_uuid, hid_handle_reply) < 0) {
err_not_supported(pr->conn, pr->msg);
error("HID service search request failed");
goto fail;
}
} else {
/* Request PnP record */
if (get_record(pr, *phandle, pnp_record_reply) < 0) {
err_not_supported(pr->conn, pr->msg);
error("PnP service attribute request failed");
goto fail;
}
}
/* Wait HID handle reply or PnP record reply */
goto done;
fail:
dbus_error_free(&derr);
pending_req_free(pr);
done:
dbus_message_unref(reply);
}
static void headset_record_reply(DBusPendingCall *call, void *data)
{
DBusMessage *reply = dbus_pending_call_steal_reply(call);
DBusMessage *pr_reply;
DBusError derr;
struct pending_req *pr = data;
uint8_t *rec_bin;
sdp_record_t *rec;
sdp_list_t *protos;
const char *path;
int len, scanned;
uint8_t ch;
dbus_error_init(&derr);
if (dbus_set_error_from_message(&derr, reply)) {
if (dbus_error_has_name(&derr,
"org.bluez.Error.ConnectionAttemptFailed"))
err_connection_failed(pr->conn, pr->msg, derr.message);
else
err_not_supported(pr->conn, pr->msg);
error("GetRemoteServiceRecord: %s(%s)",
derr.name, derr.message);
goto fail;
}
if (!dbus_message_get_args(reply, &derr,
DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, &rec_bin, &len,
DBUS_TYPE_INVALID)) {
err_not_supported(pr->conn, pr->msg);
error("%s: %s", derr.name, derr.message);
goto fail;
}
if (len == 0) {
err_not_supported(pr->conn, pr->msg);
error("Invalid headset service record length");
goto fail;
}
rec = sdp_extract_pdu(rec_bin, &scanned);
if (!rec) {
err_not_supported(pr->conn, pr->msg);
goto fail;
}
if (sdp_get_access_protos(rec, &protos) < 0) {
err_not_supported(pr->conn, pr->msg);
goto fail;
}
ch = sdp_get_proto_port(protos, RFCOMM_UUID);
sdp_list_foreach(protos, (sdp_list_func_t) sdp_list_free, NULL);
sdp_list_free(protos, NULL);
sdp_record_free(rec);
if (ch <= 0) {
err_not_supported(pr->conn, pr->msg);
error("Invalid RFCOMM channel");
goto fail;
}
/* FIXME: Store the fake input data */
if (fake_input_register(pr->conn, &pr->src, &pr->dst, ch, &path) < 0) {
error("D-Bus path registration failed:%s", path);
err_failed(pr->conn, pr->msg, "Path registration failed");
goto fail;
}
device_paths = g_slist_append(device_paths, g_strdup(path));
pr_reply = dbus_message_new_method_return(pr->msg);
dbus_message_append_args(pr_reply,
DBUS_TYPE_STRING, &path,
DBUS_TYPE_INVALID);
send_message_and_unref(pr->conn, pr_reply);
fail:
dbus_error_free(&derr);
pending_req_free(pr);
dbus_message_unref(reply);
}
static void headset_handle_reply(DBusPendingCall *call, void *data)
{
DBusMessage *reply = dbus_pending_call_steal_reply(call);
struct pending_req *pr = data;
DBusError derr;
uint32_t *phandle;
int len;
dbus_error_init(&derr);
if (dbus_set_error_from_message(&derr, reply)) {
if (dbus_error_has_name(&derr,
"org.bluez.Error.ConnectionAttemptFailed"))
err_connection_failed(pr->conn, pr->msg, derr.message);
else
err_not_supported(pr->conn, pr->msg);
error("GetRemoteServiceHandles: %s(%s)",
derr.name, derr.message);
goto fail;
}
if (!dbus_message_get_args(reply, &derr,
DBUS_TYPE_ARRAY, DBUS_TYPE_UINT32, &phandle, &len,
DBUS_TYPE_INVALID)) {
err_not_supported(pr->conn, pr->msg);
error("%s: %s", derr.name, derr.message);
goto fail;
}
if (len == 0) {
err_not_supported(pr->conn, pr->msg);
error("Headset record handle not found");
goto fail;
}
if (get_record(pr, *phandle, headset_record_reply) < 0) {
err_not_supported(pr->conn, pr->msg);
error("Headset service attribute request failed");
goto fail;
} else {
/* Wait record reply */
goto done;
}
fail:
dbus_error_free(&derr);
pending_req_free(pr);
done:
dbus_message_unref(reply);
}
static int path_bdaddr_cmp(const char *path, const bdaddr_t *bdaddr)
{
bdaddr_t src, dst;
if (input_device_get_bdaddr(connection, path, &src, &dst) < 0)
return -1;
return bacmp(&dst, bdaddr);
}
static DBusHandlerResult create_device(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct pending_req *pr;
DBusError derr;
const char *addr;
GSList *l;
bdaddr_t src, dst;
uint32_t cls = 0;
int dev_id;
dbus_error_init(&derr);
if (!dbus_message_get_args(msg, &derr,
DBUS_TYPE_STRING, &addr,
DBUS_TYPE_INVALID)) {
err_invalid_args(conn, msg, derr.message);
dbus_error_free(&derr);
return DBUS_HANDLER_RESULT_HANDLED;
}
/* Get the default adapter */
dev_id = hci_get_route(NULL);
if (dev_id < 0) {
error("Bluetooth adapter not available");
return err_failed(conn, msg, "Adapter not available");
}
if (hci_devba(dev_id, &src) < 0) {
error("Can't get local adapter device info");
return err_failed(conn, msg, "Adapter not available");
}
str2ba(addr, &dst);
l = g_slist_find_custom(device_paths, &dst,
(GCompareFunc) path_bdaddr_cmp);
if (l)
return err_already_exists(conn, msg, "Input Already exists");
if (read_device_class(&src, &dst, &cls) < 0) {
error("Device class not available");
return err_not_supported(conn, msg);
}
pr = pending_req_new(conn, msg, &src, &dst);
if (!pr)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
switch (cls & 0x1f00) {
case 0x0500: /* Peripheral */
if (get_handles(pr, pnp_uuid, pnp_handle_reply) < 0) {
pending_req_free(pr);
return err_not_supported(conn, msg);
}
break;
case 0x0400: /* Fake input */
if (get_handles(pr, headset_uuid,
headset_handle_reply) < 0) {
pending_req_free(pr);
return err_not_supported(conn, msg);
}
break;
default:
pending_req_free(pr);
return err_not_supported(conn, msg);
}
return DBUS_HANDLER_RESULT_HANDLED;
}
static DBusHandlerResult remove_device(DBusConnection *conn,
DBusMessage *msg, void *data)
{
DBusMessage *reply;
DBusError derr;
GSList *l;
const char *path;
int err;
dbus_error_init(&derr);
if (!dbus_message_get_args(msg, &derr,
DBUS_TYPE_STRING, &path,
DBUS_TYPE_INVALID)) {
err_invalid_args(conn, msg, derr.message);
dbus_error_free(&derr);
return DBUS_HANDLER_RESULT_HANDLED;
}
l = g_slist_find_custom(device_paths, path, (GCompareFunc) strcmp);
if (!l)
return err_does_not_exist(conn, msg, "Input doesn't exist");
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
err = input_device_unregister(conn, path);
if (err < 0) {
dbus_message_unref(reply);
return err_failed(conn, msg, strerror(-err));
}
g_free(l->data);
device_paths = g_slist_remove(device_paths, l->data);
return send_message_and_unref(conn, reply);
}
static DBusHandlerResult list_devices(DBusConnection *conn,
DBusMessage *msg, void *data)
{
DBusMessageIter iter, iter_array;
DBusMessage *reply;
GSList *paths;
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
dbus_message_iter_init_append(reply, &iter);
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
DBUS_TYPE_STRING_AS_STRING, &iter_array);
for (paths = device_paths; paths != NULL; paths = paths->next) {
const char *ppath = paths->data;
dbus_message_iter_append_basic(&iter_array,
DBUS_TYPE_STRING, &ppath);
}
dbus_message_iter_close_container(&iter, &iter_array);
return send_message_and_unref(conn, reply);
}
static DBusHandlerResult manager_message(DBusConnection *conn,
DBusMessage *msg, void *data)
{
const char *path, *iface, *member;
path = dbus_message_get_path(msg);
iface = dbus_message_get_interface(msg);
member = dbus_message_get_member(msg);
/* Catching fallback paths */
if (strcmp(INPUT_PATH, path) != 0)
return err_unknown_device(conn, msg);
/* Accept messages from the input manager interface only */
if (strcmp(INPUT_MANAGER_INTERFACE, iface))
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
if (strcmp(member, "ListDevices") == 0)
return list_devices(conn, msg, data);
if (strcmp(member, "CreateDevice") == 0)
return create_device(conn, msg, data);
if (strcmp(member, "RemoveDevice") == 0)
return remove_device(conn, msg, data);
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
static void manager_unregister(DBusConnection *conn, void *data)
{
info("Unregistered manager path");
g_slist_foreach(device_paths, (GFunc) free, NULL);
g_slist_free(device_paths);
}
/* Virtual table to handle manager object path hierarchy */
static const DBusObjectPathVTable manager_table = {
.message_function = manager_message,
.unregister_function = manager_unregister,
};
/*
* Stored inputs registration functions
*/
static void stored_input(char *key, char *value, void *data)
{
const char *path;
struct hidp_connadd_req hidp;
bdaddr_t dst, *src = data;
str2ba(key, &dst);
memset(&hidp, 0, sizeof(struct hidp_connadd_req));
if (parse_stored_device_info(value, &hidp) < 0)
return;
/*
* Repeated entries for the same remote device are
* acceptable since the source is different.
*/
if (input_device_register(connection, src, &dst, &hidp, &path) < 0)
return;
device_paths = g_slist_append(device_paths, g_strdup(path));
}
static void register_stored_inputs(void)
{
char dirname[PATH_MAX + 1];
char filename[PATH_MAX + 1];
struct dirent *de;
DIR *dir;
bdaddr_t src;
snprintf(dirname, PATH_MAX, "%s", STORAGEDIR);
dir = opendir(dirname);
if (!dir)
return;
while ((de = readdir(dir)) != NULL) {
if (!isdigit(de->d_name[0]))
continue;
create_name(filename, PATH_MAX, STORAGEDIR,
de->d_name, "input");
str2ba(de->d_name, &src);
textfile_foreach(filename, stored_input, &src);
}
closedir(dir);
}
int input_init(DBusConnection *conn)
{
connection = dbus_connection_ref(conn);
dbus_connection_set_exit_on_disconnect(connection, TRUE);
/* Fallback to catch invalid device path */
if (!dbus_connection_register_fallback(connection, INPUT_PATH,
&manager_table, NULL)) {
error("D-Bus failed to register %s path", INPUT_PATH);
return -1;
}
info("Registered input manager path:%s", INPUT_PATH);
/* Register well known HID devices */
register_stored_inputs();
server_start(connection);
return 0;
}
void input_exit(void)
{
dbus_connection_unregister_object_path(connection, INPUT_PATH);
server_stop();
dbus_connection_unref(connection);
connection = NULL;
}
Reference in New Issue View Git Blame Copy Permalink