| /* |
| * |
| * BlueZ - Bluetooth protocol stack for Linux |
| * |
| * Copyright (C) 2006-2010 Nokia 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 <stdlib.h> |
| #include <sys/socket.h> |
| #include <sys/ioctl.h> |
| |
| #include <bluetooth/bluetooth.h> |
| #include <bluetooth/hci.h> |
| #include <bluetooth/hci_lib.h> |
| #include <bluetooth/sdp.h> |
| |
| #include <glib.h> |
| #include <dbus/dbus.h> |
| #include <gdbus.h> |
| |
| #include "log.h" |
| |
| #include "hcid.h" |
| #include "adapter.h" |
| #include "device.h" |
| #include "agent.h" |
| |
| #define REQUEST_TIMEOUT (60 * 1000) /* 60 seconds */ |
| |
| typedef enum { |
| AGENT_REQUEST_PASSKEY, |
| AGENT_REQUEST_CONFIRMATION, |
| AGENT_REQUEST_PINCODE, |
| AGENT_REQUEST_AUTHORIZE, |
| AGENT_REQUEST_CONFIRM_MODE |
| } agent_request_type_t; |
| |
| struct agent { |
| struct btd_adapter *adapter; |
| char *name; |
| char *path; |
| uint8_t capability; |
| struct agent_request *request; |
| int exited; |
| agent_remove_cb remove_cb; |
| void *remove_cb_data; |
| guint listener_id; |
| }; |
| |
| struct agent_request { |
| agent_request_type_t type; |
| struct agent *agent; |
| DBusMessage *msg; |
| DBusPendingCall *call; |
| void *cb; |
| void *user_data; |
| GDestroyNotify destroy; |
| }; |
| |
| static DBusConnection *connection = NULL; |
| |
| static int request_fallback(struct agent_request *req, |
| DBusPendingCallNotifyFunction function); |
| |
| static void agent_release(struct agent *agent) |
| { |
| DBusMessage *message; |
| |
| DBG("Releasing agent %s, %s", agent->name, agent->path); |
| |
| if (agent->request) |
| agent_cancel(agent); |
| |
| message = dbus_message_new_method_call(agent->name, agent->path, |
| "org.bluez.Agent", "Release"); |
| if (message == NULL) { |
| error("Couldn't allocate D-Bus message"); |
| return; |
| } |
| |
| g_dbus_send_message(connection, message); |
| } |
| |
| static int send_cancel_request(struct agent_request *req) |
| { |
| DBusMessage *message; |
| |
| message = dbus_message_new_method_call(req->agent->name, req->agent->path, |
| "org.bluez.Agent", "Cancel"); |
| if (message == NULL) { |
| error("Couldn't allocate D-Bus message"); |
| return -ENOMEM; |
| } |
| |
| g_dbus_send_message(connection, message); |
| |
| return 0; |
| } |
| |
| static void agent_request_free(struct agent_request *req, gboolean destroy) |
| { |
| if (req->msg) |
| dbus_message_unref(req->msg); |
| if (req->call) |
| dbus_pending_call_unref(req->call); |
| if (req->agent && req->agent->request) |
| req->agent->request = NULL; |
| if (destroy && req->destroy) |
| req->destroy(req->user_data); |
| g_free(req); |
| } |
| |
| static void agent_exited(DBusConnection *conn, void *user_data) |
| { |
| struct agent *agent = user_data; |
| |
| DBG("Agent exited without calling Unregister"); |
| |
| agent->exited = TRUE; |
| |
| agent_free(agent); |
| } |
| |
| void agent_free(struct agent *agent) |
| { |
| if (!agent) |
| return; |
| |
| if (agent->remove_cb) |
| agent->remove_cb(agent, agent->remove_cb_data); |
| |
| if (agent->request) { |
| DBusError err; |
| agent_pincode_cb pincode_cb; |
| agent_cb cb; |
| |
| dbus_error_init(&err); |
| dbus_set_error_const(&err, "org.bluez.Error.Failed", "Canceled"); |
| |
| switch (agent->request->type) { |
| case AGENT_REQUEST_PINCODE: |
| pincode_cb = agent->request->cb; |
| pincode_cb(agent, &err, NULL, agent->request->user_data); |
| break; |
| default: |
| cb = agent->request->cb; |
| cb(agent, &err, agent->request->user_data); |
| } |
| |
| dbus_error_free(&err); |
| |
| agent_cancel(agent); |
| } |
| |
| if (!agent->exited) { |
| g_dbus_remove_watch(connection, agent->listener_id); |
| agent_release(agent); |
| } |
| |
| g_free(agent->name); |
| g_free(agent->path); |
| |
| g_free(agent); |
| } |
| |
| struct agent *agent_create(struct btd_adapter *adapter, const char *name, |
| const char *path, uint8_t capability, |
| agent_remove_cb cb, void *remove_cb_data) |
| { |
| struct agent *agent; |
| |
| agent = g_new0(struct agent, 1); |
| |
| agent->adapter = adapter; |
| agent->name = g_strdup(name); |
| agent->path = g_strdup(path); |
| agent->capability = capability; |
| agent->remove_cb = cb; |
| agent->remove_cb_data = remove_cb_data; |
| |
| agent->listener_id = g_dbus_add_disconnect_watch(connection, name, |
| agent_exited, agent, |
| NULL); |
| |
| return agent; |
| } |
| |
| static struct agent_request *agent_request_new(struct agent *agent, |
| agent_request_type_t type, |
| void *cb, |
| void *user_data, |
| GDestroyNotify destroy) |
| { |
| struct agent_request *req; |
| |
| req = g_new0(struct agent_request, 1); |
| |
| req->agent = agent; |
| req->type = type; |
| req->cb = cb; |
| req->user_data = user_data; |
| req->destroy = destroy; |
| |
| return req; |
| } |
| |
| int agent_cancel(struct agent *agent) |
| { |
| if (!agent->request) |
| return -EINVAL; |
| |
| if (agent->request->call) |
| dbus_pending_call_cancel(agent->request->call); |
| |
| if (!agent->exited) |
| send_cancel_request(agent->request); |
| |
| agent_request_free(agent->request, TRUE); |
| agent->request = NULL; |
| |
| return 0; |
| } |
| |
| static void simple_agent_reply(DBusPendingCall *call, void *user_data) |
| { |
| struct agent_request *req = user_data; |
| struct agent *agent = req->agent; |
| DBusMessage *message; |
| DBusError err; |
| agent_cb cb = req->cb; |
| |
| /* steal_reply will always return non-NULL since the callback |
| * is only called after a reply has been received */ |
| message = dbus_pending_call_steal_reply(call); |
| |
| dbus_error_init(&err); |
| if (dbus_set_error_from_message(&err, message)) { |
| if ((g_str_equal(DBUS_ERROR_UNKNOWN_METHOD, err.name) || |
| g_str_equal(DBUS_ERROR_NO_REPLY, err.name)) && |
| request_fallback(req, simple_agent_reply) == 0) { |
| dbus_error_free(&err); |
| return; |
| } |
| |
| error("Agent replied with an error: %s, %s", |
| err.name, err.message); |
| |
| cb(agent, &err, req->user_data); |
| |
| if (dbus_error_has_name(&err, DBUS_ERROR_NO_REPLY)) { |
| agent_cancel(agent); |
| dbus_message_unref(message); |
| dbus_error_free(&err); |
| return; |
| } |
| |
| dbus_error_free(&err); |
| goto done; |
| } |
| |
| dbus_error_init(&err); |
| if (!dbus_message_get_args(message, &err, DBUS_TYPE_INVALID)) { |
| error("Wrong reply signature: %s", err.message); |
| cb(agent, &err, req->user_data); |
| dbus_error_free(&err); |
| goto done; |
| } |
| |
| cb(agent, NULL, req->user_data); |
| done: |
| dbus_message_unref(message); |
| |
| agent->request = NULL; |
| agent_request_free(req, TRUE); |
| } |
| |
| static int agent_call_authorize(struct agent_request *req, |
| const char *device_path, |
| const char *uuid) |
| { |
| struct agent *agent = req->agent; |
| |
| req->msg = dbus_message_new_method_call(agent->name, agent->path, |
| "org.bluez.Agent", "Authorize"); |
| if (!req->msg) { |
| error("Couldn't allocate D-Bus message"); |
| return -ENOMEM; |
| } |
| |
| dbus_message_append_args(req->msg, |
| DBUS_TYPE_OBJECT_PATH, &device_path, |
| DBUS_TYPE_STRING, &uuid, |
| DBUS_TYPE_INVALID); |
| |
| if (dbus_connection_send_with_reply(connection, req->msg, |
| &req->call, REQUEST_TIMEOUT) == FALSE) { |
| error("D-Bus send failed"); |
| return -EIO; |
| } |
| |
| dbus_pending_call_set_notify(req->call, simple_agent_reply, req, NULL); |
| return 0; |
| } |
| |
| int agent_authorize(struct agent *agent, |
| const char *path, |
| const char *uuid, |
| agent_cb cb, |
| void *user_data, |
| GDestroyNotify destroy) |
| { |
| struct agent_request *req; |
| int err; |
| |
| if (agent->request) |
| return -EBUSY; |
| |
| req = agent_request_new(agent, AGENT_REQUEST_AUTHORIZE, cb, |
| user_data, destroy); |
| |
| err = agent_call_authorize(req, path, uuid); |
| if (err < 0) { |
| agent_request_free(req, FALSE); |
| return -ENOMEM; |
| } |
| |
| agent->request = req; |
| |
| DBG("authorize request was sent for %s", path); |
| |
| return 0; |
| } |
| |
| static void pincode_reply(DBusPendingCall *call, void *user_data) |
| { |
| struct agent_request *req = user_data; |
| struct agent *agent = req->agent; |
| struct btd_adapter *adapter = agent->adapter; |
| agent_pincode_cb cb = req->cb; |
| DBusMessage *message; |
| DBusError err; |
| bdaddr_t sba; |
| size_t len; |
| char *pin; |
| |
| adapter_get_address(adapter, &sba); |
| |
| /* steal_reply will always return non-NULL since the callback |
| * is only called after a reply has been received */ |
| message = dbus_pending_call_steal_reply(call); |
| |
| dbus_error_init(&err); |
| if (dbus_set_error_from_message(&err, message)) { |
| if ((g_str_equal(DBUS_ERROR_UNKNOWN_METHOD, err.name) || |
| g_str_equal(DBUS_ERROR_NO_REPLY, err.name)) && |
| request_fallback(req, pincode_reply) == 0) { |
| dbus_error_free(&err); |
| return; |
| } |
| |
| error("Agent replied with an error: %s, %s", |
| err.name, err.message); |
| |
| cb(agent, &err, NULL, req->user_data); |
| dbus_error_free(&err); |
| goto done; |
| } |
| |
| dbus_error_init(&err); |
| if (!dbus_message_get_args(message, &err, |
| DBUS_TYPE_STRING, &pin, |
| DBUS_TYPE_INVALID)) { |
| error("Wrong passkey reply signature: %s", err.message); |
| cb(agent, &err, NULL, req->user_data); |
| dbus_error_free(&err); |
| goto done; |
| } |
| |
| len = strlen(pin); |
| |
| dbus_error_init(&err); |
| if (len > 16 || len < 1) { |
| error("Invalid passkey length from handler"); |
| dbus_set_error_const(&err, "org.bluez.Error.InvalidArgs", |
| "Invalid passkey length"); |
| cb(agent, &err, NULL, req->user_data); |
| dbus_error_free(&err); |
| goto done; |
| } |
| |
| set_pin_length(&sba, len); |
| |
| cb(agent, NULL, pin, req->user_data); |
| |
| done: |
| if (message) |
| dbus_message_unref(message); |
| |
| dbus_pending_call_cancel(req->call); |
| agent->request = NULL; |
| agent_request_free(req, TRUE); |
| } |
| |
| static int pincode_request_new(struct agent_request *req, const char *device_path, |
| dbus_bool_t numeric) |
| { |
| struct agent *agent = req->agent; |
| |
| req->msg = dbus_message_new_method_call(agent->name, agent->path, |
| "org.bluez.Agent", "RequestPinCode"); |
| if (req->msg == NULL) { |
| error("Couldn't allocate D-Bus message"); |
| return -ENOMEM; |
| } |
| |
| dbus_message_append_args(req->msg, DBUS_TYPE_OBJECT_PATH, &device_path, |
| DBUS_TYPE_INVALID); |
| |
| if (dbus_connection_send_with_reply(connection, req->msg, |
| &req->call, REQUEST_TIMEOUT) == FALSE) { |
| error("D-Bus send failed"); |
| return -EIO; |
| } |
| |
| dbus_pending_call_set_notify(req->call, pincode_reply, req, NULL); |
| return 0; |
| } |
| |
| int agent_request_pincode(struct agent *agent, struct btd_device *device, |
| agent_pincode_cb cb, void *user_data, |
| GDestroyNotify destroy) |
| { |
| struct agent_request *req; |
| const gchar *dev_path = device_get_path(device); |
| int err; |
| |
| if (agent->request) |
| return -EBUSY; |
| |
| req = agent_request_new(agent, AGENT_REQUEST_PINCODE, cb, |
| user_data, destroy); |
| |
| err = pincode_request_new(req, dev_path, FALSE); |
| if (err < 0) |
| goto failed; |
| |
| agent->request = req; |
| |
| return 0; |
| |
| failed: |
| g_free(req); |
| return err; |
| } |
| |
| static int confirm_mode_change_request_new(struct agent_request *req, |
| const char *mode) |
| { |
| struct agent *agent = req->agent; |
| |
| req->msg = dbus_message_new_method_call(agent->name, agent->path, |
| "org.bluez.Agent", "ConfirmModeChange"); |
| if (req->msg == NULL) { |
| error("Couldn't allocate D-Bus message"); |
| return -ENOMEM; |
| } |
| |
| dbus_message_append_args(req->msg, |
| DBUS_TYPE_STRING, &mode, |
| DBUS_TYPE_INVALID); |
| |
| if (dbus_connection_send_with_reply(connection, req->msg, |
| &req->call, REQUEST_TIMEOUT) == FALSE) { |
| error("D-Bus send failed"); |
| return -EIO; |
| } |
| |
| dbus_pending_call_set_notify(req->call, simple_agent_reply, req, NULL); |
| return 0; |
| } |
| |
| int agent_confirm_mode_change(struct agent *agent, const char *new_mode, |
| agent_cb cb, void *user_data, |
| GDestroyNotify destroy) |
| { |
| struct agent_request *req; |
| int err; |
| |
| if (agent->request) |
| return -EBUSY; |
| |
| DBG("Calling Agent.ConfirmModeChange: name=%s, path=%s, mode=%s", |
| agent->name, agent->path, new_mode); |
| |
| req = agent_request_new(agent, AGENT_REQUEST_CONFIRM_MODE, |
| cb, user_data, destroy); |
| |
| err = confirm_mode_change_request_new(req, new_mode); |
| if (err < 0) |
| goto failed; |
| |
| agent->request = req; |
| |
| return 0; |
| |
| failed: |
| agent_request_free(req, FALSE); |
| return err; |
| } |
| |
| static void passkey_reply(DBusPendingCall *call, void *user_data) |
| { |
| struct agent_request *req = user_data; |
| struct agent *agent = req->agent; |
| agent_passkey_cb cb = req->cb; |
| DBusMessage *message; |
| DBusError err; |
| uint32_t passkey; |
| |
| /* steal_reply will always return non-NULL since the callback |
| * is only called after a reply has been received */ |
| message = dbus_pending_call_steal_reply(call); |
| |
| dbus_error_init(&err); |
| if (dbus_set_error_from_message(&err, message)) { |
| if ((g_str_equal(DBUS_ERROR_UNKNOWN_METHOD, err.name) || |
| g_str_equal(DBUS_ERROR_NO_REPLY, err.name)) && |
| request_fallback(req, passkey_reply) == 0) { |
| dbus_error_free(&err); |
| return; |
| } |
| |
| error("Agent replied with an error: %s, %s", |
| err.name, err.message); |
| cb(agent, &err, 0, req->user_data); |
| dbus_error_free(&err); |
| goto done; |
| } |
| |
| dbus_error_init(&err); |
| if (!dbus_message_get_args(message, &err, |
| DBUS_TYPE_UINT32, &passkey, |
| DBUS_TYPE_INVALID)) { |
| error("Wrong passkey reply signature: %s", err.message); |
| cb(agent, &err, 0, req->user_data); |
| dbus_error_free(&err); |
| goto done; |
| } |
| |
| cb(agent, NULL, passkey, req->user_data); |
| |
| done: |
| if (message) |
| dbus_message_unref(message); |
| |
| dbus_pending_call_cancel(req->call); |
| agent->request = NULL; |
| agent_request_free(req, TRUE); |
| } |
| |
| static int passkey_request_new(struct agent_request *req, |
| const char *device_path) |
| { |
| struct agent *agent = req->agent; |
| |
| req->msg = dbus_message_new_method_call(agent->name, agent->path, |
| "org.bluez.Agent", "RequestPasskey"); |
| if (req->msg == NULL) { |
| error("Couldn't allocate D-Bus message"); |
| return -ENOMEM; |
| } |
| |
| dbus_message_append_args(req->msg, DBUS_TYPE_OBJECT_PATH, &device_path, |
| DBUS_TYPE_INVALID); |
| |
| if (dbus_connection_send_with_reply(connection, req->msg, |
| &req->call, REQUEST_TIMEOUT) == FALSE) { |
| error("D-Bus send failed"); |
| return -EIO; |
| } |
| |
| dbus_pending_call_set_notify(req->call, passkey_reply, req, NULL); |
| return 0; |
| } |
| |
| int agent_request_passkey(struct agent *agent, struct btd_device *device, |
| agent_passkey_cb cb, void *user_data, |
| GDestroyNotify destroy) |
| { |
| struct agent_request *req; |
| const gchar *dev_path = device_get_path(device); |
| int err; |
| |
| if (agent->request) |
| return -EBUSY; |
| |
| DBG("Calling Agent.RequestPasskey: name=%s, path=%s", |
| agent->name, agent->path); |
| |
| req = agent_request_new(agent, AGENT_REQUEST_PASSKEY, cb, |
| user_data, destroy); |
| |
| err = passkey_request_new(req, dev_path); |
| if (err < 0) |
| goto failed; |
| |
| agent->request = req; |
| |
| return 0; |
| |
| failed: |
| agent_request_free(req, FALSE); |
| return err; |
| } |
| |
| static int confirmation_request_new(struct agent_request *req, |
| const char *device_path, |
| uint32_t passkey) |
| { |
| struct agent *agent = req->agent; |
| |
| req->msg = dbus_message_new_method_call(agent->name, agent->path, |
| "org.bluez.Agent", "RequestConfirmation"); |
| if (req->msg == NULL) { |
| error("Couldn't allocate D-Bus message"); |
| return -ENOMEM; |
| } |
| |
| dbus_message_append_args(req->msg, |
| DBUS_TYPE_OBJECT_PATH, &device_path, |
| DBUS_TYPE_UINT32, &passkey, |
| DBUS_TYPE_INVALID); |
| |
| if (dbus_connection_send_with_reply(connection, req->msg, |
| &req->call, REQUEST_TIMEOUT) == FALSE) { |
| error("D-Bus send failed"); |
| return -EIO; |
| } |
| |
| dbus_pending_call_set_notify(req->call, simple_agent_reply, req, NULL); |
| |
| return 0; |
| } |
| |
| int agent_request_confirmation(struct agent *agent, struct btd_device *device, |
| uint32_t passkey, agent_cb cb, |
| void *user_data, GDestroyNotify destroy) |
| { |
| struct agent_request *req; |
| const gchar *dev_path = device_get_path(device); |
| int err; |
| |
| if (agent->request) |
| return -EBUSY; |
| |
| DBG("Calling Agent.RequestConfirmation: name=%s, path=%s, passkey=%06u", |
| agent->name, agent->path, passkey); |
| |
| req = agent_request_new(agent, AGENT_REQUEST_CONFIRMATION, cb, |
| user_data, destroy); |
| |
| err = confirmation_request_new(req, dev_path, passkey); |
| if (err < 0) |
| goto failed; |
| |
| agent->request = req; |
| |
| return 0; |
| |
| failed: |
| agent_request_free(req, FALSE); |
| return err; |
| } |
| |
| static int request_fallback(struct agent_request *req, |
| DBusPendingCallNotifyFunction function) |
| { |
| struct btd_adapter *adapter = req->agent->adapter; |
| struct agent *adapter_agent = adapter_get_agent(adapter); |
| DBusMessage *msg; |
| |
| if (req->agent == adapter_agent || adapter_agent == NULL) |
| return -EINVAL; |
| |
| dbus_pending_call_cancel(req->call); |
| |
| msg = dbus_message_copy(req->msg); |
| |
| dbus_message_set_destination(msg, adapter_agent->name); |
| dbus_message_set_path(msg, adapter_agent->path); |
| |
| if (dbus_connection_send_with_reply(connection, msg, |
| &req->call, REQUEST_TIMEOUT) == FALSE) { |
| error("D-Bus send failed"); |
| dbus_message_unref(msg); |
| return -EIO; |
| } |
| |
| req->agent->request = NULL; |
| req->agent = adapter_agent; |
| req->agent->request = req; |
| |
| dbus_message_unref(req->msg); |
| req->msg = msg; |
| |
| dbus_pending_call_set_notify(req->call, function, req, NULL); |
| |
| return 0; |
| } |
| |
| int agent_display_passkey(struct agent *agent, struct btd_device *device, |
| uint32_t passkey) |
| { |
| DBusMessage *message; |
| const gchar *dev_path = device_get_path(device); |
| |
| message = dbus_message_new_method_call(agent->name, agent->path, |
| "org.bluez.Agent", "DisplayPasskey"); |
| if (!message) { |
| error("Couldn't allocate D-Bus message"); |
| return -1; |
| } |
| |
| dbus_message_append_args(message, |
| DBUS_TYPE_OBJECT_PATH, &dev_path, |
| DBUS_TYPE_UINT32, &passkey, |
| DBUS_TYPE_INVALID); |
| |
| if (!g_dbus_send_message(connection, message)) { |
| error("D-Bus send failed"); |
| dbus_message_unref(message); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| uint8_t agent_get_io_capability(struct agent *agent) |
| { |
| return agent->capability; |
| } |
| |
| gboolean agent_matches(struct agent *agent, const char *name, const char *path) |
| { |
| if (g_str_equal(agent->name, name) && g_str_equal(agent->path, path)) |
| return TRUE; |
| |
| return FALSE; |
| } |
| |
| gboolean agent_is_busy(struct agent *agent, void *user_data) |
| { |
| if (!agent->request) |
| return FALSE; |
| |
| if (user_data && user_data != agent->request->user_data) |
| return FALSE; |
| |
| return TRUE; |
| } |
| |
| void agent_exit(void) |
| { |
| dbus_connection_unref(connection); |
| connection = NULL; |
| } |
| |
| void agent_init(void) |
| { |
| connection = dbus_bus_get(DBUS_BUS_SYSTEM, NULL); |
| } |