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powerkey.c
4187 lines (3507 loc) · 121 KB
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powerkey.c
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/**
* @file powerkey.c
* Power key logic for the Mode Control Entity
* <p>
* Copyright © 2004-2011 Nokia Corporation and/or its subsidiary(-ies).
* Copyright © 2013-2019 Jolla Ltd.
* <p>
* @author David Weinehall <david.weinehall@nokia.com>
* @author Tapio Rantala <ext-tapio.rantala@nokia.com>
* @author Santtu Lakkala <ext-santtu.1.lakkala@nokia.com>
* @author Irina Bezruk <ext-irina.bezruk@nokia.com>
* @author Simo Piiroinen <simo.piiroinen@jollamobile.com>
* @author Kimmo Lindholm <kimmo.lindholm@eke.fi>
* @author Andrew den Exter <andrew.den.exter@jolla.com>
*
* mce is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* mce 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mce. If not, see <http://www.gnu.org/licenses/>.
*/
#include "powerkey.h"
#include "tklock.h"
#include "evdev.h"
#include "mce-log.h"
#include "mce-lib.h"
#include "mce-setting.h"
#include "mce-common.h"
#include "mce-dbus.h"
#include "mce-dsme.h"
#include "modules/doubletap.h"
#include "systemui/dbus-names.h"
#ifdef ENABLE_WAKELOCKS
# include "libwakelock.h"
#endif
#include <linux/input.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <mce/dbus-names.h>
#include <mce/mode-names.h>
#include <libngf/ngf.h>
/* ========================================================================= *
* OVERVIEW
*
* There is a predefined set of actions. Of these two are dbus actions
* that by default make mce broadcast dbus signals, but can be configured
* to make any dbus method call with optional string argument.
*
* Any combination of these actions can be bound to:
* - single power key press
* - double power key press
* - long power key press
*
* The selected actions are executed in a fixed order and actions that
* are common to both single and double press are executed immediately
* after powerkey is released. This allows double press configuration
* to extend what would be done with single press without causing
* delays for single press handling.
*
* Separate combinations are used depending on whether the
* display is on or off during the 1st power key press.
*
* The build-in defaults are as follows
*
* From display off:
* - single press - turns display on
* - double press - turns display on and hides lockscreen (but not device lock)
* - long press - does nothing
*
* From display on:
* - single press - turns display off and activates locksreen
* - double press - turns display off, activates locksreen and locks device
* - long press - initiates shutdown (if lockscreen is not active)
*
* Effectively this is just as before, except for the double press
* actions to apply device lock / wake up to home screen.
* ========================================================================= */
/* ========================================================================= *
* CONSTANTS
* ========================================================================= */
#define MODULE_NAME "powerkey"
/* ========================================================================= *
* PROTOTYPES
* ========================================================================= */
/* ------------------------------------------------------------------------- *
* MISC_UTIL
* ------------------------------------------------------------------------- */
/* Null tolerant string equality predicate
*
* @param s1 string
* @param s2 string
*
* @return true if both s1 and s2 are null or same string, false otherwise
*/
static inline bool eq(const char *s1, const char *s2)
{
return (s1 && s2) ? !strcmp(s1, s2) : (s1 == s2);
}
/** String is NULL or empty predicate
*/
static inline bool empty(const char *s)
{
return s == 0 || *s == 0;
}
static char *pwrkey_get_token(char **ppos);
static bool pwrkey_create_flagfile(const char *path);
static bool pwrkey_delete_flagfile(const char *path);
static int64_t pwrkey_event_tick(const struct input_event *ev);
/* ------------------------------------------------------------------------- *
* PS_OVERRIDE
*
* Provides escape from stuck proximity sensor.
* ------------------------------------------------------------------------- */
/** [setting] Power key press count for proximity sensor override */
static gint pwrkey_ps_override_count = MCE_DEFAULT_POWERKEY_PS_OVERRIDE_COUNT;
static guint pwrkey_ps_override_count_setting_id = 0;
/** [setting] Maximum time between power key presses for proximity sensor override */
static gint pwrkey_ps_override_timeout = MCE_DEFAULT_POWERKEY_PS_OVERRIDE_TIMEOUT;
static guint pwrkey_ps_override_timeout_setting_id = 0;
static void pwrkey_ps_override_evaluate(void);
/* ------------------------------------------------------------------------- *
* ACTION_EXEC
*
* Individual actions that can be taken.
* ------------------------------------------------------------------------- */
static gint pwrkey_action_blank_mode = MCE_DEFAULT_POWERKEY_BLANKING_MODE;
static guint pwrkey_action_blank_mode_setting_id = 0;
static void pwrkey_action_vibrate (void);
static void pwrkey_action_shutdown (void);
static void pwrkey_action_tklock (void);
static void pwrkey_action_blank (void);
static void pwrkey_action_unblank (void);
static void pwrkey_action_unblanked(void);
static void pwrkey_action_tkunlock (void);
static void pwrkey_action_tkunlock2(void);
static void pwrkey_action_devlock (void);
static void pwrkey_action_dbus1 (void);
static void pwrkey_action_dbus2 (void);
static void pwrkey_action_dbus3 (void);
static void pwrkey_action_dbus4 (void);
static void pwrkey_action_dbus5 (void);
static void pwrkey_action_dbus6 (void);
static void pwrkey_action_dbus7 (void);
static void pwrkey_action_dbus8 (void);
static void pwrkey_action_dbus9 (void);
static void pwrkey_action_dbus10 (void);
static void pwrkey_action_nop (void);
/* ------------------------------------------------------------------------- *
* ACTION_SETS
*
* Handle sets of individual actions.
* ------------------------------------------------------------------------- */
typedef struct
{
const char *name;
void (*func)(void);
} pwrkey_bitconf_t;
static uint32_t pwrkey_mask_from_name (const char *name);
static uint32_t pwrkey_mask_from_names (const char *names);
static gchar *pwrkey_mask_to_names (uint32_t mask);
/* ------------------------------------------------------------------------- *
* GESTURE_FILTERING
* ------------------------------------------------------------------------- */
/** Touchscreen gesture (doubletap etc) enable mode */
static gint pwrkey_gestures_enable_mode = MCE_DEFAULT_DOUBLETAP_MODE;
static guint pwrkey_gestures_enable_mode_cb_id = 0;
/* ------------------------------------------------------------------------- *
* PWRKEY_PREDICATE
* ------------------------------------------------------------------------- */
/** Enumeratio of possible unblank allowed predicates */
typedef enum
{
/** Apply powerkey press rules */
PWRKEY_UNBLANK_PREDICATE_POWERKEY,
/** Apply fingerprint wakeup rules */
PWRKEY_UNBLANK_PREDICATE_FPWAKEUP,
/** Apply rules for real gesture events */
PWRKEY_UNBLANK_PREDICATE_GESTURE_REAL,
/** Apply rules for synthetized gesture events */
PWRKEY_UNBLANK_PREDICATE_GESTURE_SYNTH,
/** Rules for action sets that do not include unblank */
PWRKEY_UNBLANK_PREDICATE_DONTCARE,
PWRKEY_UNBLANK_PREDICATE_COUNT
} pwrkey_unblank_predicate_t;
/** Lookup table of unblank predicate names (for diagnostic logging) */
static const char * const pwrkey_unblank_predicate_name[PWRKEY_UNBLANK_PREDICATE_COUNT] =
{
[PWRKEY_UNBLANK_PREDICATE_POWERKEY] = "powerkey",
[PWRKEY_UNBLANK_PREDICATE_FPWAKEUP] = "fpwakeup",
[PWRKEY_UNBLANK_PREDICATE_GESTURE_REAL] = "gesture_real",
[PWRKEY_UNBLANK_PREDICATE_GESTURE_SYNTH] = "gesture_synth",
[PWRKEY_UNBLANK_PREDICATE_DONTCARE] = "dontcare",
};
static bool pwrkey_predicate_gesture (bool synthesized, bool *need_psensor);
static bool pwrkey_predicate_fpwakeup(bool *need_psensor);
static bool pwrkey_predicate_powerkey(bool *need_psensor);
static bool pwrkey_predicate (pwrkey_unblank_predicate_t predicate, bool *need_psensor);
/* ------------------------------------------------------------------------- *
* ACTION_TRIGGERING
* ------------------------------------------------------------------------- */
typedef struct
{
/** Actions common to single and double press */
uint32_t mask_common;
/** Actions for single press */
uint32_t mask_single;
/** Actions for double press */
uint32_t mask_double;
/** Actions for long press */
uint32_t mask_long;
} pwrkey_actions_t;
/** Actions when power key is pressed while display is on */
static pwrkey_actions_t pwrkey_actions_from_display_on = { 0, 0, 0, 0 };
/** Actions when power key is pressed while display is off */
static pwrkey_actions_t pwrkey_actions_from_display_off = { 0, 0, 0, 0 };
/** Actions on touch screen gestures */
static pwrkey_actions_t pwrkey_actions_from_gesture[POWERKEY_ACTIONS_GESTURE_COUNT] = {};
/** Currently selected power key actions; default to turning display on */
static pwrkey_actions_t *pwrkey_actions_now =
&pwrkey_actions_from_display_off;
static gchar *pwrkey_actions_single_on = 0;
static guint pwrkey_actions_single_on_setting_id = 0;
static gchar *pwrkey_actions_double_on = 0;
static guint pwrkey_actions_double_on_setting_id = 0;
static gchar *pwrkey_actions_long_on = 0;
static guint pwrkey_actions_long_on_setting_id = 0;
static gchar *pwrkey_actions_single_off = 0;
static guint pwrkey_actions_single_off_setting_id = 0;
static gchar *pwrkey_actions_double_off = 0;
static guint pwrkey_actions_double_off_setting_id = 0;
static gchar *pwrkey_actions_long_off = 0;
static guint pwrkey_actions_long_off_setting_id = 0;
/** Array of setting keys for configurable touchscreen gestures */
static const char * const pwrkey_actions_gesture_key[POWERKEY_ACTIONS_GESTURE_COUNT] =
{
MCE_SETTING_POWERKEY_ACTIONS_GESTURE0,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE1,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE2,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE3,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE4,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE5,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE6,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE7,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE8,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE9,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE10,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE11,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE12,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE13,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE14,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE15,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE16,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE17,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE18,
MCE_SETTING_POWERKEY_ACTIONS_GESTURE19,
};
/** Array of default values for configurable touchscreen gestures */
static const char * const pwrkey_actions_gesture_val[POWERKEY_ACTIONS_GESTURE_COUNT] =
{
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE0,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE1,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE2,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE3,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE4,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE5,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE6,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE7,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE8,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE9,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE10,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE11,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE12,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE13,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE14,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE15,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE16,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE17,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE18,
MCE_DEFAULT_POWERKEY_ACTIONS_GESTURE19,
};
/** Array of current values for configurable touchscreen gestures */
static gchar *pwrkey_actions_gesture [POWERKEY_ACTIONS_GESTURE_COUNT] = {};
static guint pwrkey_actions_gesture_setting_id[POWERKEY_ACTIONS_GESTURE_COUNT] = {};
static void pwrkey_actions_parse (pwrkey_actions_t *self, const char *names_single, const char *names_double, const char *names_long);
static void pwrkey_actions_do_gesture (size_t gesture);
static bool pwrkey_actions_do_special (void);
static void pwrkey_actions_do_common (void);
static void pwrkey_actions_do_single_press (void);
static void pwrkey_actions_do_double_press (void);
static void pwrkey_actions_do_long_press (void);
static bool pwrkey_actions_update (const pwrkey_actions_t *self, gchar **names_single, gchar **names_double, gchar **names_long);
static bool pwrkey_actions_use_double_press(void);
static void pwrkey_actions_select (bool display_is_on);
/* ------------------------------------------------------------------------- *
* LONG_PRESS_TIMEOUT
*
* timer for telling apart short and long power key presses
* ------------------------------------------------------------------------- */
static gint pwrkey_long_press_delay = MCE_DEFAULT_POWERKEY_LONG_PRESS_DELAY;
static guint pwrkey_long_press_delay_setting_id = 0;
static guint pwrkey_long_press_timer_id = 0;
static gboolean pwrkey_long_press_timer_cb (gpointer aptr);
static void pwrkey_long_press_timer_start (void);
static bool pwrkey_long_press_timer_pending (void);
static bool pwrkey_long_press_timer_cancel (void);
/* ------------------------------------------------------------------------- *
* DOUBLE_PRESS_TIMEOUT
*
* timer for telling apart single and double power key presses
* ------------------------------------------------------------------------- */
static gint pwrkey_double_press_delay = MCE_DEFAULT_POWERKEY_DOUBLE_PRESS_DELAY;
static guint pwrkey_double_press_delay_setting_id = 0;
static guint pwrkey_double_press_timer_id = 0;
static gboolean pwrkey_double_press_timer_cb(gpointer aptr);
static bool pwrkey_double_press_timer_pending(void);
static bool pwrkey_double_press_timer_cancel(void);
static void pwrkey_double_press_timer_start(void);
/* ------------------------------------------------------------------------- *
* NGFD_GLUE
* ------------------------------------------------------------------------- */
static const char *xngf_state_repr (NgfEventState state);
static void xngf_status_cb (NgfClient *client, uint32_t event_id, NgfEventState state, void *userdata);
static bool xngf_create_client (void);
static void xngf_delete_client (void);
static void xngf_play_event (const char *event_name);
static void xngf_init (void);
static void xngf_quit (void);
/* ------------------------------------------------------------------------- *
* DBUS_ACTIONS
*
* emitting dbus signal from mce / making dbus method call to some service
* ------------------------------------------------------------------------- */
/** Flag file for: Possibly dangerous dbus action in progress
*
* Used for resetting dbus action config if it causes mce to crash.
*
* Using tmpfs is problematic from permissions point of view, but we do
* not want to cause flash wear by this either.
*/
static const char pwrkey_dbus_action_flag[] =
"/tmp/mce-powerkey-dbus-action.flag";
typedef struct
{
const char *setting_key;
const char *setting_def;
gchar *setting_val;
guint setting_id;
char *destination;
char *object;
char *interface;
char *member;
char *argument;
} pwrkey_dbus_action_t;
static pwrkey_dbus_action_t pwrkey_dbus_action[POWEKEY_DBUS_ACTION_COUNT] =
{
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION1,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION1,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION2,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION2,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION3,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION3,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION4,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION4,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION5,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION5,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION6,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION6,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION7,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION7,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION8,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION8,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION9,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION9,
.setting_val = 0,
.setting_id = 0,
},
{
.setting_key = MCE_SETTING_POWERKEY_DBUS_ACTION10,
.setting_def = MCE_DEFAULT_POWERKEY_DBUS_ACTION10,
.setting_val = 0,
.setting_id = 0,
},
};
static void pwrkey_dbus_action_clear(pwrkey_dbus_action_t *self);
static void pwrkey_dbus_action_reset(pwrkey_dbus_action_t *self);
static bool pwrkey_dbus_action_is_methodcall(const pwrkey_dbus_action_t *self);
static bool pwrkey_dbus_action_is_signal(const pwrkey_dbus_action_t *self);
static void pwrkey_dbus_action_parse(pwrkey_dbus_action_t *self);
static gchar *pwrkey_dbus_action_to_string(const pwrkey_dbus_action_t *self);
static void pwrkey_dbus_action_sanitize(pwrkey_dbus_action_t *self);
static void pwrkey_dbus_action_configure(size_t action_id, bool force_reset);
static void pwrkey_dbus_action_execute(size_t index);
/* ------------------------------------------------------------------------- *
* POWER_KEY_STATE_MACHINE
*
* main logic for tracking power key presses and associated timers
*
* state transition graph can be generated from "powerkey.dot" file
* ------------------------------------------------------------------------- */
/** Diplay state when power key was pressed */
static display_state_t pwrkey_stm_display_state = MCE_DISPLAY_UNDEF;
static alarm_ui_state_t pwrkey_stm_alarm_ui_state = MCE_ALARM_UI_OFF_INT32;
static call_state_t pwrkey_stm_call_state = CALL_STATE_NONE;
static bool pwrkey_stm_call_silenced = false;
static bool pwrkey_stm_alarm_silenced = false;
/** [setting] Power key press enable mode */
static gint pwrkey_stm_enable_mode = MCE_DEFAULT_POWERKEY_MODE;
static guint pwrkey_stm_enable_mode_setting_id = 0;
static void pwrkey_stm_long_press_timeout (void);
static void pwrkey_stm_double_press_timeout (void);
static void pwrkey_stm_powerkey_pressed (void);
static void pwrkey_stm_powerkey_released (void);
static bool pwrkey_stm_pending_timers (void);
static void pwrkey_stm_rethink_wakelock (void);
static void pwrkey_stm_store_initial_state (void);
static void pwrkey_stm_terminate (void);
/* ------------------------------------------------------------------------- *
* HOME_KEY_STATE_MACHINE
* ------------------------------------------------------------------------- */
typedef enum
{
HOMEKEY_STM_WAIT_PRESS = 0,
HOMEKEY_STM_WAIT_UNBLANK = 1,
HOMEKEY_STM_SEND_SIGNAL = 2,
HOMEKEY_STM_WAIT_RELEASE = 3,
} homekey_stm_t;
static const char *homekey_stm_repr (homekey_stm_t state);
static void homekey_stm_set_state (homekey_stm_t state);
static bool homekey_stm_exec_step (void);
static void homekey_stm_eval_state (void);
static void homekey_stm_set_pressed (bool pressed);
/* ------------------------------------------------------------------------- *
* DBUS_IPC
*
* handling incoming and outgoing dbus messages
* ------------------------------------------------------------------------- */
static void pwrkey_dbus_send_signal(const char *sig, const char *arg);
static gboolean pwrkey_dbus_trigger_event_cb(DBusMessage *const req);
static gboolean pwrkey_dbus_ignore_incoming_call_cb(DBusMessage *const req);
static void pwrkey_dbus_init(void);
static void pwrkey_dbus_quit(void);
/* ------------------------------------------------------------------------- *
* DYNAMIC_SETTINGS
*
* tracking powerkey related runtime changeable settings
* ------------------------------------------------------------------------- */
static gint pwrkey_setting_sanitize_id = 0;
static void pwrkey_setting_sanitize_action_masks(void);
static void pwrkey_setting_sanitize_dbus_actions(void);
static gboolean pwrkey_setting_sanitize_cb (gpointer aptr);
static void pwrkey_setting_sanitize_now (void);
static void pwrkey_setting_sanitize_later (void);
static void pwrkey_setting_sanitize_cancel (void);
static bool pwrkey_setting_handle_gesture (const GConfValue *gcv, guint id);
static void pwrkey_setting_cb (GConfClient *const gcc, const guint id, GConfEntry *const entry, gpointer const data);
static void pwrkey_setting_init (void);
static void pwrkey_setting_quit (void);
/* ------------------------------------------------------------------------- *
* DATAPIPE_HANDLING
*
* reacting to state changes / input from other mce modules
* ------------------------------------------------------------------------- */
static void pwrkey_datapipe_keypress_event_cb(gconstpointer const data);
static void pwrkey_datapipe_ngfd_service_state_cb(gconstpointer data);
static void pwrkey_datapipe_system_state_cb(gconstpointer data);
static void pwrkey_datapipe_devicelock_state_cb(gconstpointer data);
static void pwrkey_datapipe_display_state_curr_cb(gconstpointer data);
static void pwrkey_datapipe_display_state_next_cb(gconstpointer data);
static void pwrkey_datapipe_lid_sensor_filtered_cb(gconstpointer data);
static void pwrkey_datapipe_proximity_sensor_actual_cb(gconstpointer data);
static void pwrkey_datapipe_call_state_cb(gconstpointer data);
static void pwrkey_datapipe_alarm_ui_state_cb(gconstpointer data);
static void pwrkey_datapipe_devicelock_service_state_cb(gconstpointer data);
static void pwrkey_datapipe_enroll_in_progress_cb(gconstpointer data);
static void pwrkey_datapipe_ngfd_event_request_cb(gconstpointer data);
static void pwrkey_datapipe_init(void);
static void pwrkey_datapipe_quit(void);
/* ------------------------------------------------------------------------- *
* PWRKEY_QUEUED
* ------------------------------------------------------------------------- */
typedef struct pwrkey_queued_t
{
pwrkey_unblank_predicate_t predicate;
uint32_t actions;
} pwrkey_queued_t;
static pwrkey_queued_t *pwrkey_queued_create (pwrkey_unblank_predicate_t predicate, uint32_t actions);
static void pwrkey_queued_delete (pwrkey_queued_t *self);
static void pwrkey_queued_delete_cb (gpointer self);
/* ------------------------------------------------------------------------- *
* PWRKEY_QUEUE
* ------------------------------------------------------------------------- */
static void pwrkey_queue_init (void);
static void pwrkey_queue_quit (void);
static void pwrkey_queue_add_actions (pwrkey_unblank_predicate_t predicate, uint32_t mask);
static void pwrkey_queue_execute (void);
static pwrkey_queued_t *pwrkey_queue_current_action (void);
static void pwrkey_queue_finish_action (void);
static bool pwrkey_queue_blank_delay_needed (void);
static void pwrkey_queue_start_blank_delay (guint delay);
static void pwrkey_queue_stop_blank_delay (void);
static gboolean pwrkey_queue_blank_delay_cb (gpointer aptr);
static void pwrkey_queue_start_action_delay (guint delay);
static void pwrkey_queue_stop_action_delay (void);
static gboolean pwrkey_queue_action_delay_cb (gpointer aptr);
static bool pwrkey_queue_unblank_delay_needed(void);
static void pwrkey_queue_start_unblank_delay (guint delay);
static void pwrkey_queue_stop_unblank_delay (void);
static gboolean pwrkey_queue_unblank_delay_cb (gpointer aptr);
static void pwrkey_queue_start_delay (uint32_t actions);
static void pwrkey_queue_stop_all_delays (void);
static bool pwrkey_queue_is_delayed (void);
static bool pwrkey_queue_is_busy (void);
static void pwrkey_queue_rethink_delays (void);
static void pwrkey_queue_rethink_psensor (void);
/* ------------------------------------------------------------------------- *
* MODULE_INTEFACE
* ------------------------------------------------------------------------- */
gboolean mce_powerkey_init(void);
void mce_powerkey_exit(void);
/* ========================================================================= *
* MISC_UTIL
* ========================================================================= */
/** Parse element from comma separated string list
*/
static char *
pwrkey_get_token(char **ppos)
{
char *pos = *ppos;
char *beg = pos;
if( !pos )
goto cleanup;
for( ; *pos; ++pos ) {
if( *pos != ',' )
continue;
*pos++ = 0;
break;
}
cleanup:
return *ppos = pos, beg;
}
/** Create an empty flag file
*
* @param path Path to the file to create
*
* @return true if file was created, false otherwise
*/
static bool pwrkey_create_flagfile(const char *path)
{
bool created = false;
int fd = open(path, O_WRONLY|O_CREAT|O_EXCL|O_TRUNC, 0666);
if( fd != -1 ) {
close(fd);
created = true;
}
return created;
}
/** Delete a flag file
*
* @param path Path to the file to create
*
* @return true if file was removed, false otherwise
*/
static bool pwrkey_delete_flagfile(const char *path)
{
bool deleted = false;
if( unlink(path) == 0 ) {
deleted = true;
}
return deleted;
}
/** Get event time in millisecond accuracy
*
* @param ev input event pointer
*
* @return event time in millisecond accuracy
*/
static int64_t pwrkey_event_tick(const struct input_event *ev)
{
int64_t ms = 0;
if( ev ) {
ms += ev->input_event_sec;
ms *= 1000;
ms += ev->input_event_usec / 1000;
}
return ms;
}
/* ========================================================================= *
* DATAPIPE_HANDLING
* ========================================================================= */
/** System state; is undefined at bootup, can't assume anything */
static system_state_t system_state = MCE_SYSTEM_STATE_UNDEF;
/** Cached devicelock_state ; assume unknown */
static devicelock_state_t devicelock_state = DEVICELOCK_STATE_UNDEFINED;
/** Current display state; undefined initially, can't assume anything */
static display_state_t display_state_curr = MCE_DISPLAY_UNDEF;
/** Next Display state; undefined initially, can't assume anything */
static display_state_t display_state_next = MCE_DISPLAY_UNDEF;
/** Lid cover policy state; assume unknown */
static cover_state_t lid_sensor_filtered = COVER_UNDEF;
/** Actual proximity state; assume not covered */
static cover_state_t proximity_sensor_actual = COVER_UNDEF;
/** NGFD availability */
static service_state_t ngfd_service_state = SERVICE_STATE_UNDEF;
/** Cached alarm ui state */
static alarm_ui_state_t alarm_ui_state = MCE_ALARM_UI_OFF_INT32;
/** Cached call state */
static call_state_t call_state = CALL_STATE_NONE;
/** devicelock dbus name is reserved; assume unknown */
static service_state_t devicelock_service_state = SERVICE_STATE_UNDEF;
/** Cached ongoing fingerprint enroll; assume not */
static bool enroll_in_progress = false;
/** Use powerkey for blanking during incoming calls */
static bool pwrkey_ignore_incoming_call = false;
/* ========================================================================= *
* PS_OVERRIDE
* ========================================================================= */
/** Provide an emergency way out from stuck proximity sensor
*
* If the proximity sensor is dirty/faulty and stuck to "covered"
* state, it can leave the phone in a state where it is impossible
* to do anything about incoming call, ringing alarm.
*
* To offer somekind of remedy for the situation, this function
* allows user to force proximity sensor to "uncovered" state
* by rapidly pressing power button several times.
*/
static void
pwrkey_ps_override_evaluate(void)
{
static int64_t t_last = 0;
static gint count = 0;
/* If the feature is disabled, just reset the counter */
if( pwrkey_ps_override_count <= 0 ||
pwrkey_ps_override_timeout <= 0 ) {
t_last = 0, count = 0;
goto EXIT;
}
/* If neither sensor is not covered, just reset the counter */
if( proximity_sensor_actual == COVER_OPEN &&
lid_sensor_filtered != COVER_CLOSED ) {
t_last = 0, count = 0;
goto EXIT;
}
int64_t t_now = mce_lib_get_boot_tick();
/* If the previous power key press was too far in
* the past, start counting from zero again */
if( t_now > t_last + pwrkey_ps_override_timeout ) {
mce_log(LL_DEBUG, "ps override count restarted");
count = 0;
}
t_last = t_now;
/* If configured number of power key presses within the time
* limits has been reached, force proximity sensor state to
* "uncovered".
*
* This should allow touch input ungrabbing and turning
* display on during incoming call / alarm.
*
* If sensor gets unstuck and new proximity readings are
* received, this override will be automatically undone.
*/
if( ++count != pwrkey_ps_override_count ) {
mce_log(LL_DEBUG, "ps override count = %d", count);
goto EXIT;
}
if( proximity_sensor_actual == COVER_CLOSED ) {
mce_log(LL_CRIT, "assuming stuck proximity sensor;"
" faking uncover event");
/* Force cached proximity state to "open" */
datapipe_exec_full(&proximity_sensor_actual_pipe,
GINT_TO_POINTER(COVER_OPEN));
}
if( lid_sensor_filtered == COVER_CLOSED ) {
mce_log(LL_CRIT, "assuming stuck lid sensor;"
" resetting validation data");
/* Reset lid sensor validation data */
datapipe_exec_full(&lid_sensor_is_working_pipe,
GINT_TO_POINTER(false));
}
t_last = 0, count = 0;
EXIT:
return;
}
/* ========================================================================= *
* ACTION_EXEC
* ========================================================================= */
static void
pwrkey_action_vibrate(void)
{
mce_log(LL_DEBUG, "Requesting vibrate");
xngf_play_event("pwrkey");
}
static void
pwrkey_action_shutdown(void)
{
submode_t submode = mce_get_submode_int32();
/* Do not shutdown if the tklock is active */
if( submode & MCE_SUBMODE_TKLOCK )
goto EXIT;
mce_log(LL_DEVEL, "Requesting shutdown");
mce_dsme_request_normal_shutdown();
EXIT:
return;
}
static void
pwrkey_action_tklock(void)
{
tklock_request_t request = TKLOCK_REQUEST_ON;
mce_datapipe_request_tklock(request);
}
static void
pwrkey_action_tkunlock(void)
{
/* Only unlock if we are in/entering fully powered on display state */
switch( display_state_next ) {
case MCE_DISPLAY_ON:
case MCE_DISPLAY_DIM:
break;
default:
goto EXIT;
}
tklock_request_t request = TKLOCK_REQUEST_OFF;
/* Even if powerkey actions are allowed to work while proximity
* sensor is covered, we must not deactivatie the lockscreen */
if( proximity_sensor_actual != COVER_OPEN ) {
mce_log(LL_DEBUG, "Proximity sensor %s; rejecting tklock=%s",
proximity_state_repr(proximity_sensor_actual),
tklock_request_repr(request));
goto EXIT;
}
mce_datapipe_request_tklock(request);
EXIT:
return;
}
static void
pwrkey_action_tkunlock2(void)
{
if( devicelock_state != DEVICELOCK_STATE_UNLOCKED ) {
mce_log(LL_DEBUG, "devicelock_state=%s; rejecting 'tkunlock2' action",
devicelock_state_repr(devicelock_state));
}
else {
pwrkey_action_tkunlock();
}
}
static void
pwrkey_action_blank(void)
{
display_state_t request = MCE_DISPLAY_OFF;
switch( pwrkey_action_blank_mode ) {
case PWRKEY_BLANK_TO_LPM:
request = MCE_DISPLAY_LPM_ON;
break;
case PWRKEY_BLANK_TO_OFF:
default:
break;
}
/* Note: logged from datapipe functions */
mce_datapipe_request_display_state(request);
}
static void
pwrkey_action_unblank(void)
{
display_state_t request = MCE_DISPLAY_ON;
mce_log(LL_DEBUG, "Requesting display=%s",
display_state_repr(request));
mce_tklock_unblank(request);
}
static void
pwrkey_action_unblanked(void)
{
/* Placeholder dummy action.
*
* Used for preserving unblank predicate when
* action set including unblank is executed
* in multiple parts.
*/
}
static void
pwrkey_action_devlock(void)
{
static const char service[] = DEVICELOCK_SERVICE;
static const char object[] = DEVICELOCK_REQUEST_PATH;
static const char interface[] = DEVICELOCK_REQUEST_IF;
static const char method[] = "setState";
dbus_int32_t request = DEVICELOCK_STATE_LOCKED;
if( devicelock_service_state != SERVICE_STATE_RUNNING ) {
mce_log(LL_WARN, "devicelock service state is %s; skip %s request",
service_state_repr(devicelock_service_state),