[qemu.git] / ui / input-linux.c

/*
 * This work is licensed under the terms of the GNU GPL, version 2 or
 * (at your option) any later version.  See the COPYING file in the
 * top-level directory.
 */

#include "qemu/osdep.h"
#include "qemu-common.h"
#include "qemu/config-file.h"
#include "qemu/sockets.h"
#include "sysemu/sysemu.h"
#include "ui/input.h"
#include "qom/object_interfaces.h"

#include <sys/ioctl.h>
#include "standard-headers/linux/input.h"

static int linux_to_qcode[KEY_CNT] = {
    [KEY_ESC]            = Q_KEY_CODE_ESC,
    [KEY_1]              = Q_KEY_CODE_1,
    [KEY_2]              = Q_KEY_CODE_2,
    [KEY_3]              = Q_KEY_CODE_3,
    [KEY_4]              = Q_KEY_CODE_4,
    [KEY_5]              = Q_KEY_CODE_5,
    [KEY_6]              = Q_KEY_CODE_6,
    [KEY_7]              = Q_KEY_CODE_7,
    [KEY_8]              = Q_KEY_CODE_8,
    [KEY_9]              = Q_KEY_CODE_9,
    [KEY_0]              = Q_KEY_CODE_0,
    [KEY_MINUS]          = Q_KEY_CODE_MINUS,
    [KEY_EQUAL]          = Q_KEY_CODE_EQUAL,
    [KEY_BACKSPACE]      = Q_KEY_CODE_BACKSPACE,
    [KEY_TAB]            = Q_KEY_CODE_TAB,
    [KEY_Q]              = Q_KEY_CODE_Q,
    [KEY_W]              = Q_KEY_CODE_W,
    [KEY_E]              = Q_KEY_CODE_E,
    [KEY_R]              = Q_KEY_CODE_R,
    [KEY_T]              = Q_KEY_CODE_T,
    [KEY_Y]              = Q_KEY_CODE_Y,
    [KEY_U]              = Q_KEY_CODE_U,
    [KEY_I]              = Q_KEY_CODE_I,
    [KEY_O]              = Q_KEY_CODE_O,
    [KEY_P]              = Q_KEY_CODE_P,
    [KEY_LEFTBRACE]      = Q_KEY_CODE_BRACKET_LEFT,
    [KEY_RIGHTBRACE]     = Q_KEY_CODE_BRACKET_RIGHT,
    [KEY_ENTER]          = Q_KEY_CODE_RET,
    [KEY_LEFTCTRL]       = Q_KEY_CODE_CTRL,
    [KEY_A]              = Q_KEY_CODE_A,
    [KEY_S]              = Q_KEY_CODE_S,
    [KEY_D]              = Q_KEY_CODE_D,
    [KEY_F]              = Q_KEY_CODE_F,
    [KEY_G]              = Q_KEY_CODE_G,
    [KEY_H]              = Q_KEY_CODE_H,
    [KEY_J]              = Q_KEY_CODE_J,
    [KEY_K]              = Q_KEY_CODE_K,
    [KEY_L]              = Q_KEY_CODE_L,
    [KEY_SEMICOLON]      = Q_KEY_CODE_SEMICOLON,
    [KEY_APOSTROPHE]     = Q_KEY_CODE_APOSTROPHE,
    [KEY_GRAVE]          = Q_KEY_CODE_GRAVE_ACCENT,
    [KEY_LEFTSHIFT]      = Q_KEY_CODE_SHIFT,
    [KEY_BACKSLASH]      = Q_KEY_CODE_BACKSLASH,
    [KEY_102ND]          = Q_KEY_CODE_LESS,
    [KEY_Z]              = Q_KEY_CODE_Z,
    [KEY_X]              = Q_KEY_CODE_X,
    [KEY_C]              = Q_KEY_CODE_C,
    [KEY_V]              = Q_KEY_CODE_V,
    [KEY_B]              = Q_KEY_CODE_B,
    [KEY_N]              = Q_KEY_CODE_N,
    [KEY_M]              = Q_KEY_CODE_M,
    [KEY_COMMA]          = Q_KEY_CODE_COMMA,
    [KEY_DOT]            = Q_KEY_CODE_DOT,
    [KEY_SLASH]          = Q_KEY_CODE_SLASH,
    [KEY_RIGHTSHIFT]     = Q_KEY_CODE_SHIFT_R,
    [KEY_LEFTALT]        = Q_KEY_CODE_ALT,
    [KEY_SPACE]          = Q_KEY_CODE_SPC,
    [KEY_CAPSLOCK]       = Q_KEY_CODE_CAPS_LOCK,
    [KEY_F1]             = Q_KEY_CODE_F1,
    [KEY_F2]             = Q_KEY_CODE_F2,
    [KEY_F3]             = Q_KEY_CODE_F3,
    [KEY_F4]             = Q_KEY_CODE_F4,
    [KEY_F5]             = Q_KEY_CODE_F5,
    [KEY_F6]             = Q_KEY_CODE_F6,
    [KEY_F7]             = Q_KEY_CODE_F7,
    [KEY_F8]             = Q_KEY_CODE_F8,
    [KEY_F9]             = Q_KEY_CODE_F9,
    [KEY_F10]            = Q_KEY_CODE_F10,
    [KEY_NUMLOCK]        = Q_KEY_CODE_NUM_LOCK,
    [KEY_SCROLLLOCK]     = Q_KEY_CODE_SCROLL_LOCK,
    [KEY_KP0]            = Q_KEY_CODE_KP_0,
    [KEY_KP1]            = Q_KEY_CODE_KP_1,
    [KEY_KP2]            = Q_KEY_CODE_KP_2,
    [KEY_KP3]            = Q_KEY_CODE_KP_3,
    [KEY_KP4]            = Q_KEY_CODE_KP_4,
    [KEY_KP5]            = Q_KEY_CODE_KP_5,
    [KEY_KP6]            = Q_KEY_CODE_KP_6,
    [KEY_KP7]            = Q_KEY_CODE_KP_7,
    [KEY_KP8]            = Q_KEY_CODE_KP_8,
    [KEY_KP9]            = Q_KEY_CODE_KP_9,
    [KEY_KPMINUS]        = Q_KEY_CODE_KP_SUBTRACT,
    [KEY_KPPLUS]         = Q_KEY_CODE_KP_ADD,
    [KEY_KPDOT]          = Q_KEY_CODE_KP_DECIMAL,
    [KEY_KPENTER]        = Q_KEY_CODE_KP_ENTER,
    [KEY_KPSLASH]        = Q_KEY_CODE_KP_DIVIDE,
    [KEY_KPASTERISK]     = Q_KEY_CODE_KP_MULTIPLY,
    [KEY_F11]            = Q_KEY_CODE_F11,
    [KEY_F12]            = Q_KEY_CODE_F12,
    [KEY_RIGHTCTRL]      = Q_KEY_CODE_CTRL_R,
    [KEY_SYSRQ]          = Q_KEY_CODE_SYSRQ,
    [KEY_RIGHTALT]       = Q_KEY_CODE_ALT_R,
    [KEY_HOME]           = Q_KEY_CODE_HOME,
    [KEY_UP]             = Q_KEY_CODE_UP,
    [KEY_PAGEUP]         = Q_KEY_CODE_PGUP,
    [KEY_LEFT]           = Q_KEY_CODE_LEFT,
    [KEY_RIGHT]          = Q_KEY_CODE_RIGHT,
    [KEY_END]            = Q_KEY_CODE_END,
    [KEY_DOWN]           = Q_KEY_CODE_DOWN,
    [KEY_PAGEDOWN]       = Q_KEY_CODE_PGDN,
    [KEY_INSERT]         = Q_KEY_CODE_INSERT,
    [KEY_DELETE]         = Q_KEY_CODE_DELETE,
    [KEY_LEFTMETA]       = Q_KEY_CODE_META_L,
    [KEY_RIGHTMETA]      = Q_KEY_CODE_META_R,
    [KEY_MENU]           = Q_KEY_CODE_MENU,
};

static int qemu_input_linux_to_qcode(unsigned int lnx)
{
    assert(lnx < KEY_CNT);
    return linux_to_qcode[lnx];
}

#define TYPE_INPUT_LINUX "input-linux"
#define INPUT_LINUX(obj) \
    OBJECT_CHECK(InputLinux, (obj), TYPE_INPUT_LINUX)
#define INPUT_LINUX_GET_CLASS(obj) \
    OBJECT_GET_CLASS(InputLinuxClass, (obj), TYPE_INPUT_LINUX)
#define INPUT_LINUX_CLASS(klass) \
    OBJECT_CLASS_CHECK(InputLinuxClass, (klass), TYPE_INPUT_LINUX)

typedef struct InputLinux InputLinux;
typedef struct InputLinuxClass InputLinuxClass;

struct InputLinux {
    Object parent;

    char        *evdev;
    int         fd;
    bool        repeat;
    bool        grab_request;
    bool        grab_active;
    bool        grab_all;
    bool        keydown[KEY_CNT];
    int         keycount;
    int         wheel;
    bool        initialized;
    QTAILQ_ENTRY(InputLinux) next;
};

struct InputLinuxClass {
    ObjectClass parent_class;
};

static QTAILQ_HEAD(, InputLinux) inputs = QTAILQ_HEAD_INITIALIZER(inputs);

static void input_linux_toggle_grab(InputLinux *il)
{
    intptr_t request = !il->grab_active;
    InputLinux *item;
    int rc;

    rc = ioctl(il->fd, EVIOCGRAB, request);
    if (rc < 0) {
        return;
    }
    il->grab_active = !il->grab_active;

    if (!il->grab_all) {
        return;
    }
    QTAILQ_FOREACH(item, &inputs, next) {
        if (item == il || item->grab_all) {
            /* avoid endless loops */
            continue;
        }
        if (item->grab_active != il->grab_active) {
            input_linux_toggle_grab(item);
        }
    }
}

static void input_linux_event_keyboard(void *opaque)
{
    InputLinux *il = opaque;
    struct input_event event;
    int rc;

    for (;;) {
        rc = read(il->fd, &event, sizeof(event));
        if (rc != sizeof(event)) {
            if (rc < 0 && errno != EAGAIN) {
                fprintf(stderr, "%s: read: %s\n", __func__, strerror(errno));
                qemu_set_fd_handler(il->fd, NULL, NULL, NULL);
                close(il->fd);
            }
            break;
        }

        switch (event.type) {
        case EV_KEY:
            if (event.value > 2 || (event.value > 1 && !il->repeat)) {
                /*
                 * ignore autorepeat + unknown key events
                 * 0 == up, 1 == down, 2 == autorepeat, other == undefined
                 */
                continue;
            }
            /* keep track of key state */
            if (!il->keydown[event.code] && event.value) {
                il->keydown[event.code] = true;
                il->keycount++;
            }
            if (il->keydown[event.code] && !event.value) {
                il->keydown[event.code] = false;
                il->keycount--;
            }

            /* send event to guest when grab is active */
            if (il->grab_active) {
                int qcode = qemu_input_linux_to_qcode(event.code);
                qemu_input_event_send_key_qcode(NULL, qcode, event.value);
            }

            /* hotkey -> record switch request ... */
            if (il->keydown[KEY_LEFTCTRL] &&
                il->keydown[KEY_RIGHTCTRL]) {
                il->grab_request = true;
            }

            /*
             * ... and do the switch when all keys are lifted, so we
             * confuse neither guest nor host with keys which seem to
             * be stuck due to missing key-up events.
             */
            if (il->grab_request && !il->keycount) {
                il->grab_request = false;
                input_linux_toggle_grab(il);
            }
            break;
        }
    }
}

static void input_linux_event_mouse_button(int button)
{
    qemu_input_queue_btn(NULL, button, true);
    qemu_input_event_sync();
    qemu_input_queue_btn(NULL, button, false);
    qemu_input_event_sync();
}

static void input_linux_event_mouse(void *opaque)
{
    InputLinux *il = opaque;
    struct input_event event;
    int rc;

    for (;;) {
        rc = read(il->fd, &event, sizeof(event));
        if (rc != sizeof(event)) {
            if (rc < 0 && errno != EAGAIN) {
                fprintf(stderr, "%s: read: %s\n", __func__, strerror(errno));
                qemu_set_fd_handler(il->fd, NULL, NULL, NULL);
                close(il->fd);
            }
            break;
        }

        /* only send event to guest when grab is active */
        if (!il->grab_active) {
            continue;
        }

        switch (event.type) {
        case EV_KEY:
            switch (event.code) {
            case BTN_LEFT:
                qemu_input_queue_btn(NULL, INPUT_BUTTON_LEFT, event.value);
                break;
            case BTN_RIGHT:
                qemu_input_queue_btn(NULL, INPUT_BUTTON_RIGHT, event.value);
                break;
            case BTN_MIDDLE:
                qemu_input_queue_btn(NULL, INPUT_BUTTON_MIDDLE, event.value);
                break;
            case BTN_GEAR_UP:
                qemu_input_queue_btn(NULL, INPUT_BUTTON_WHEEL_UP, event.value);
                break;
            case BTN_GEAR_DOWN:
                qemu_input_queue_btn(NULL, INPUT_BUTTON_WHEEL_DOWN,
                                     event.value);
                break;
            };
            break;
        case EV_REL:
            switch (event.code) {
            case REL_X:
                qemu_input_queue_rel(NULL, INPUT_AXIS_X, event.value);
                break;
            case REL_Y:
                qemu_input_queue_rel(NULL, INPUT_AXIS_Y, event.value);
                break;
            case REL_WHEEL:
                il->wheel = event.value;
                break;
            }
            break;
        case EV_SYN:
            qemu_input_event_sync();
            if (il->wheel != 0) {
                input_linux_event_mouse_button((il->wheel > 0)
                                               ? INPUT_BUTTON_WHEEL_UP
                                               : INPUT_BUTTON_WHEEL_DOWN);
                il->wheel = 0;
            }
            break;
        }
    }
}

static void input_linux_complete(UserCreatable *uc, Error **errp)
{
    InputLinux *il = INPUT_LINUX(uc);
    uint32_t evtmap;
    int rc, ver;

    if (!il->evdev) {
        error_setg(errp, "no input device specified");
        return;
    }

    il->fd = open(il->evdev, O_RDWR);
    if (il->fd < 0)  {
        error_setg_file_open(errp, errno, il->evdev);
        return;
    }
    qemu_set_nonblock(il->fd);

    rc = ioctl(il->fd, EVIOCGVERSION, &ver);
    if (rc < 0) {
        error_setg(errp, "%s: is not an evdev device", il->evdev);
        goto err_close;
    }

    rc = ioctl(il->fd, EVIOCGBIT(0, sizeof(evtmap)), &evtmap);

    if (evtmap & (1 << EV_REL)) {
        /* has relative axis -> assume mouse */
        qemu_set_fd_handler(il->fd, input_linux_event_mouse, NULL, il);
    } else if (evtmap & (1 << EV_ABS)) {
        /* has absolute axis -> not supported */
        error_setg(errp, "tablet/touchscreen not supported");
        goto err_close;
    } else if (evtmap & (1 << EV_KEY)) {
        /* has keys/buttons (and no axis) -> assume keyboard */
        qemu_set_fd_handler(il->fd, input_linux_event_keyboard, NULL, il);
    } else {
        /* Huh? What is this? */
        error_setg(errp, "unknown kind of input device");
        goto err_close;
    }
    input_linux_toggle_grab(il);
    QTAILQ_INSERT_TAIL(&inputs, il, next);
    il->initialized = true;
    return;

err_close:
    close(il->fd);
    return;
}

static void input_linux_instance_finalize(Object *obj)
{
    InputLinux *il = INPUT_LINUX(obj);

    if (il->initialized) {
        QTAILQ_REMOVE(&inputs, il, next);
        close(il->fd);
    }
    g_free(il->evdev);
}

static char *input_linux_get_evdev(Object *obj, Error **errp)
{
    InputLinux *il = INPUT_LINUX(obj);

    return g_strdup(il->evdev);
}

static void input_linux_set_evdev(Object *obj, const char *value,
                                  Error **errp)
{
    InputLinux *il = INPUT_LINUX(obj);

    if (il->evdev) {
        error_setg(errp, "evdev property already set");
        return;
    }
    il->evdev = g_strdup(value);
}

static bool input_linux_get_grab_all(Object *obj, Error **errp)
{
    InputLinux *il = INPUT_LINUX(obj);

    return il->grab_all;
}

static void input_linux_set_grab_all(Object *obj, bool value,
                                   Error **errp)
{
    InputLinux *il = INPUT_LINUX(obj);

    il->grab_all = value;
}

static bool input_linux_get_repeat(Object *obj, Error **errp)
{
    InputLinux *il = INPUT_LINUX(obj);

    return il->repeat;
}

static void input_linux_set_repeat(Object *obj, bool value,
                                   Error **errp)
{
    InputLinux *il = INPUT_LINUX(obj);

    il->repeat = value;
}

static void input_linux_instance_init(Object *obj)
{
    object_property_add_str(obj, "evdev",
                            input_linux_get_evdev,
                            input_linux_set_evdev, NULL);
    object_property_add_bool(obj, "grab_all",
                             input_linux_get_grab_all,
                             input_linux_set_grab_all, NULL);
    object_property_add_bool(obj, "repeat",
                             input_linux_get_repeat,
                             input_linux_set_repeat, NULL);
}

static void input_linux_class_init(ObjectClass *oc, void *data)
{
    UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);

    ucc->complete = input_linux_complete;
}

static const TypeInfo input_linux_info = {
    .name = TYPE_INPUT_LINUX,
    .parent = TYPE_OBJECT,
    .class_size = sizeof(InputLinuxClass),
    .class_init = input_linux_class_init,
    .instance_size = sizeof(InputLinux),
    .instance_init = input_linux_instance_init,
    .instance_finalize = input_linux_instance_finalize,
    .interfaces = (InterfaceInfo[]) {
        { TYPE_USER_CREATABLE },
        { }
    }
};

static void register_types(void)
{
    type_register_static(&input_linux_info);
}

type_init(register_types);
Commit	Line	Data
e0d2bd51 GH	1	/*
	2	* This work is licensed under the terms of the GNU GPL, version 2 or
	3	* (at your option) any later version. See the COPYING file in the
	4	* top-level directory.
	5	*/
	6
	7	#include "qemu/osdep.h"
	8	#include "qemu-common.h"
	9	#include "qemu/config-file.h"
	10	#include "qemu/sockets.h"
	11	#include "sysemu/sysemu.h"
	12	#include "ui/input.h"
0e066b2c	13	#include "qom/object_interfaces.h"
e0d2bd51 GH	14
	15	#include <sys/ioctl.h>
	16	#include "standard-headers/linux/input.h"
	17
	18	static int linux_to_qcode[KEY_CNT] = {
	19	[KEY_ESC] = Q_KEY_CODE_ESC,
	20	[KEY_1] = Q_KEY_CODE_1,
	21	[KEY_2] = Q_KEY_CODE_2,
	22	[KEY_3] = Q_KEY_CODE_3,
	23	[KEY_4] = Q_KEY_CODE_4,
	24	[KEY_5] = Q_KEY_CODE_5,
	25	[KEY_6] = Q_KEY_CODE_6,
	26	[KEY_7] = Q_KEY_CODE_7,
	27	[KEY_8] = Q_KEY_CODE_8,
	28	[KEY_9] = Q_KEY_CODE_9,
	29	[KEY_0] = Q_KEY_CODE_0,
	30	[KEY_MINUS] = Q_KEY_CODE_MINUS,
	31	[KEY_EQUAL] = Q_KEY_CODE_EQUAL,
	32	[KEY_BACKSPACE] = Q_KEY_CODE_BACKSPACE,
	33	[KEY_TAB] = Q_KEY_CODE_TAB,
	34	[KEY_Q] = Q_KEY_CODE_Q,
	35	[KEY_W] = Q_KEY_CODE_W,
	36	[KEY_E] = Q_KEY_CODE_E,
	37	[KEY_R] = Q_KEY_CODE_R,
	38	[KEY_T] = Q_KEY_CODE_T,
	39	[KEY_Y] = Q_KEY_CODE_Y,
	40	[KEY_U] = Q_KEY_CODE_U,
	41	[KEY_I] = Q_KEY_CODE_I,
	42	[KEY_O] = Q_KEY_CODE_O,
	43	[KEY_P] = Q_KEY_CODE_P,
	44	[KEY_LEFTBRACE] = Q_KEY_CODE_BRACKET_LEFT,
	45	[KEY_RIGHTBRACE] = Q_KEY_CODE_BRACKET_RIGHT,
	46	[KEY_ENTER] = Q_KEY_CODE_RET,
	47	[KEY_LEFTCTRL] = Q_KEY_CODE_CTRL,
	48	[KEY_A] = Q_KEY_CODE_A,
	49	[KEY_S] = Q_KEY_CODE_S,
	50	[KEY_D] = Q_KEY_CODE_D,
	51	[KEY_F] = Q_KEY_CODE_F,
	52	[KEY_G] = Q_KEY_CODE_G,
	53	[KEY_H] = Q_KEY_CODE_H,
	54	[KEY_J] = Q_KEY_CODE_J,
	55	[KEY_K] = Q_KEY_CODE_K,
	56	[KEY_L] = Q_KEY_CODE_L,
	57	[KEY_SEMICOLON] = Q_KEY_CODE_SEMICOLON,
	58	[KEY_APOSTROPHE] = Q_KEY_CODE_APOSTROPHE,
	59	[KEY_GRAVE] = Q_KEY_CODE_GRAVE_ACCENT,
	60	[KEY_LEFTSHIFT] = Q_KEY_CODE_SHIFT,
	61	[KEY_BACKSLASH] = Q_KEY_CODE_BACKSLASH,
	62	[KEY_102ND] = Q_KEY_CODE_LESS,
	63	[KEY_Z] = Q_KEY_CODE_Z,
	64	[KEY_X] = Q_KEY_CODE_X,
	65	[KEY_C] = Q_KEY_CODE_C,
	66	[KEY_V] = Q_KEY_CODE_V,
	67	[KEY_B] = Q_KEY_CODE_B,
	68	[KEY_N] = Q_KEY_CODE_N,
	69	[KEY_M] = Q_KEY_CODE_M,
	70	[KEY_COMMA] = Q_KEY_CODE_COMMA,
	71	[KEY_DOT] = Q_KEY_CODE_DOT,
	72	[KEY_SLASH] = Q_KEY_CODE_SLASH,
	73	[KEY_RIGHTSHIFT] = Q_KEY_CODE_SHIFT_R,
	74	[KEY_LEFTALT] = Q_KEY_CODE_ALT,
	75	[KEY_SPACE] = Q_KEY_CODE_SPC,
	76	[KEY_CAPSLOCK] = Q_KEY_CODE_CAPS_LOCK,
	77	[KEY_F1] = Q_KEY_CODE_F1,
78	[KEY_F2] = Q_KEY_CODE_F2,
79	[KEY_F3] = Q_KEY_CODE_F3,
80	[KEY_F4] = Q_KEY_CODE_F4,
81	[KEY_F5] = Q_KEY_CODE_F5,
82	[KEY_F6] = Q_KEY_CODE_F6,
83	[KEY_F7] = Q_KEY_CODE_F7,
84	[KEY_F8] = Q_KEY_CODE_F8,
85	[KEY_F9] = Q_KEY_CODE_F9,
86	[KEY_F10] = Q_KEY_CODE_F10,
87	[KEY_NUMLOCK] = Q_KEY_CODE_NUM_LOCK,
88	[KEY_SCROLLLOCK] = Q_KEY_CODE_SCROLL_LOCK,
89	[KEY_KP0] = Q_KEY_CODE_KP_0,
90	[KEY_KP1] = Q_KEY_CODE_KP_1,
91	[KEY_KP2] = Q_KEY_CODE_KP_2,
92	[KEY_KP3] = Q_KEY_CODE_KP_3,
93	[KEY_KP4] = Q_KEY_CODE_KP_4,
94	[KEY_KP5] = Q_KEY_CODE_KP_5,
95	[KEY_KP6] = Q_KEY_CODE_KP_6,
96	[KEY_KP7] = Q_KEY_CODE_KP_7,
97	[KEY_KP8] = Q_KEY_CODE_KP_8,
98	[KEY_KP9] = Q_KEY_CODE_KP_9,
99	[KEY_KPMINUS] = Q_KEY_CODE_KP_SUBTRACT,
100	[KEY_KPPLUS] = Q_KEY_CODE_KP_ADD,
101	[KEY_KPDOT] = Q_KEY_CODE_KP_DECIMAL,
102	[KEY_KPENTER] = Q_KEY_CODE_KP_ENTER,
103	[KEY_KPSLASH] = Q_KEY_CODE_KP_DIVIDE,
104	[KEY_KPASTERISK] = Q_KEY_CODE_KP_MULTIPLY,
105	[KEY_F11] = Q_KEY_CODE_F11,
106	[KEY_F12] = Q_KEY_CODE_F12,
107	[KEY_RIGHTCTRL] = Q_KEY_CODE_CTRL_R,
108	[KEY_SYSRQ] = Q_KEY_CODE_SYSRQ,
109	[KEY_RIGHTALT] = Q_KEY_CODE_ALT_R,
110	[KEY_HOME] = Q_KEY_CODE_HOME,
111	[KEY_UP] = Q_KEY_CODE_UP,
112	[KEY_PAGEUP] = Q_KEY_CODE_PGUP,
113	[KEY_LEFT] = Q_KEY_CODE_LEFT,
114	[KEY_RIGHT] = Q_KEY_CODE_RIGHT,
115	[KEY_END] = Q_KEY_CODE_END,
116	[KEY_DOWN] = Q_KEY_CODE_DOWN,
117	[KEY_PAGEDOWN] = Q_KEY_CODE_PGDN,
118	[KEY_INSERT] = Q_KEY_CODE_INSERT,
119	[KEY_DELETE] = Q_KEY_CODE_DELETE,
120	[KEY_LEFTMETA] = Q_KEY_CODE_META_L,
121	[KEY_RIGHTMETA] = Q_KEY_CODE_META_R,
122	[KEY_MENU] = Q_KEY_CODE_MENU,
123	};
124
125	static int qemu_input_linux_to_qcode(unsigned int lnx)
126	{
127	assert(lnx < KEY_CNT);
128	return linux_to_qcode[lnx];
129	}
130
0e066b2c GH	131	#define TYPE_INPUT_LINUX "input-linux"
	132	#define INPUT_LINUX(obj) \
	133	OBJECT_CHECK(InputLinux, (obj), TYPE_INPUT_LINUX)
	134	#define INPUT_LINUX_GET_CLASS(obj) \
	135	OBJECT_GET_CLASS(InputLinuxClass, (obj), TYPE_INPUT_LINUX)
	136	#define INPUT_LINUX_CLASS(klass) \
	137	OBJECT_CLASS_CHECK(InputLinuxClass, (klass), TYPE_INPUT_LINUX)
	138
e0d2bd51	139	typedef struct InputLinux InputLinux;
0e066b2c	140	typedef struct InputLinuxClass InputLinuxClass;
e0d2bd51 GH	141
e0d2bd51 GH	142	struct InputLinux {
0e066b2c GH	143	Object parent;
	144
	145	char *evdev;
e0d2bd51	146	int fd;
a6ccabd6	147	bool repeat;
e0d2bd51 GH	148	bool grab_request;
e0d2bd51 GH	149	bool grab_active;
46d921be	150	bool grab_all;
e0d2bd51 GH	151	bool keydown[KEY_CNT];
	152	int keycount;
	153	int wheel;
0e066b2c	154	bool initialized;
46d921be	155	QTAILQ_ENTRY(InputLinux) next;
e0d2bd51 GH	156	};
e0d2bd51 GH	157
0e066b2c GH	158	struct InputLinuxClass {
	159	ObjectClass parent_class;
	160	};
	161
46d921be GH	162	static QTAILQ_HEAD(, InputLinux) inputs = QTAILQ_HEAD_INITIALIZER(inputs);
46d921be GH	163
e0d2bd51 GH	164	static void input_linux_toggle_grab(InputLinux *il)
	165	{
	166	intptr_t request = !il->grab_active;
46d921be	167	InputLinux *item;
e0d2bd51 GH	168	int rc;
	169
	170	rc = ioctl(il->fd, EVIOCGRAB, request);
	171	if (rc < 0) {
	172	return;
	173	}
	174	il->grab_active = !il->grab_active;
46d921be GH	175
	176	if (!il->grab_all) {
	177	return;
	178	}
	179	QTAILQ_FOREACH(item, &inputs, next) {
	180	if (item == il \|\| item->grab_all) {
	181	/* avoid endless loops */
	182	continue;
	183	}
	184	if (item->grab_active != il->grab_active) {
	185	input_linux_toggle_grab(item);
	186	}
	187	}
e0d2bd51 GH	188	}
	189
	190	static void input_linux_event_keyboard(void *opaque)
	191	{
	192	InputLinux *il = opaque;
	193	struct input_event event;
	194	int rc;
	195
	196	for (;;) {
	197	rc = read(il->fd, &event, sizeof(event));
	198	if (rc != sizeof(event)) {
	199	if (rc < 0 && errno != EAGAIN) {
	200	fprintf(stderr, "%s: read: %s\n", __func__, strerror(errno));
	201	qemu_set_fd_handler(il->fd, NULL, NULL, NULL);
	202	close(il->fd);
	203	}
	204	break;
	205	}
	206
	207	switch (event.type) {
	208	case EV_KEY:
a6ccabd6	209	if (event.value > 2 \|\| (event.value > 1 && !il->repeat)) {
e0d2bd51 GH	210	/*
	211	* ignore autorepeat + unknown key events
	212	* 0 == up, 1 == down, 2 == autorepeat, other == undefined
	213	*/
	214	continue;
	215	}
	216	/* keep track of key state */
	217	if (!il->keydown[event.code] && event.value) {
	218	il->keydown[event.code] = true;
	219	il->keycount++;
	220	}
	221	if (il->keydown[event.code] && !event.value) {
	222	il->keydown[event.code] = false;
	223	il->keycount--;
	224	}
	225
	226	/* send event to guest when grab is active */
	227	if (il->grab_active) {
	228	int qcode = qemu_input_linux_to_qcode(event.code);
	229	qemu_input_event_send_key_qcode(NULL, qcode, event.value);
	230	}
	231
	232	/* hotkey -> record switch request ... */
	233	if (il->keydown[KEY_LEFTCTRL] &&
	234	il->keydown[KEY_RIGHTCTRL]) {
	235	il->grab_request = true;
	236	}
	237
	238	/*
	239	* ... and do the switch when all keys are lifted, so we
	240	* confuse neither guest nor host with keys which seem to
	241	* be stuck due to missing key-up events.
	242	*/
	243	if (il->grab_request && !il->keycount) {
	244	il->grab_request = false;
	245	input_linux_toggle_grab(il);
	246	}
	247	break;
	248	}
	249	}
	250	}
	251
	252	static void input_linux_event_mouse_button(int button)
	253	{
	254	qemu_input_queue_btn(NULL, button, true);
	255	qemu_input_event_sync();
	256	qemu_input_queue_btn(NULL, button, false);
	257	qemu_input_event_sync();
	258	}
	259
	260	static void input_linux_event_mouse(void *opaque)
	261	{
	262	InputLinux *il = opaque;
	263	struct input_event event;
	264	int rc;
	265
	266	for (;;) {
	267	rc = read(il->fd, &event, sizeof(event));
	268	if (rc != sizeof(event)) {
	269	if (rc < 0 && errno != EAGAIN) {
	270	fprintf(stderr, "%s: read: %s\n", __func__, strerror(errno));
	271	qemu_set_fd_handler(il->fd, NULL, NULL, NULL);
	272	close(il->fd);
	273	}
274	break;
275	}
276
46d921be GH	277	/* only send event to guest when grab is active */
	278	if (!il->grab_active) {
	279	continue;
	280	}
	281
e0d2bd51 GH	282	switch (event.type) {
	283	case EV_KEY:
	284	switch (event.code) {
	285	case BTN_LEFT:
	286	qemu_input_queue_btn(NULL, INPUT_BUTTON_LEFT, event.value);
	287	break;
	288	case BTN_RIGHT:
	289	qemu_input_queue_btn(NULL, INPUT_BUTTON_RIGHT, event.value);
	290	break;
	291	case BTN_MIDDLE:
	292	qemu_input_queue_btn(NULL, INPUT_BUTTON_MIDDLE, event.value);
	293	break;
	294	case BTN_GEAR_UP:
	295	qemu_input_queue_btn(NULL, INPUT_BUTTON_WHEEL_UP, event.value);
	296	break;
	297	case BTN_GEAR_DOWN:
	298	qemu_input_queue_btn(NULL, INPUT_BUTTON_WHEEL_DOWN,
	299	event.value);
	300	break;
	301	};
	302	break;
	303	case EV_REL:
	304	switch (event.code) {
	305	case REL_X:
	306	qemu_input_queue_rel(NULL, INPUT_AXIS_X, event.value);
	307	break;
	308	case REL_Y:
	309	qemu_input_queue_rel(NULL, INPUT_AXIS_Y, event.value);
	310	break;
	311	case REL_WHEEL:
	312	il->wheel = event.value;
	313	break;
	314	}
	315	break;
	316	case EV_SYN:
	317	qemu_input_event_sync();
	318	if (il->wheel != 0) {
	319	input_linux_event_mouse_button((il->wheel > 0)
	320	? INPUT_BUTTON_WHEEL_UP
	321	: INPUT_BUTTON_WHEEL_DOWN);
	322	il->wheel = 0;
	323	}
	324	break;
	325	}
	326	}
	327	}
	328
0e066b2c	329	static void input_linux_complete(UserCreatable uc, Error *errp)
e0d2bd51	330	{
0e066b2c	331	InputLinux *il = INPUT_LINUX(uc);
e0d2bd51 GH	332	uint32_t evtmap;
	333	int rc, ver;
	334
e0d2bd51 GH	335	if (!il->evdev) {
e0d2bd51 GH	336	error_setg(errp, "no input device specified");
0e066b2c	337	return;
e0d2bd51 GH	338	}
	339
	340	il->fd = open(il->evdev, O_RDWR);
	341	if (il->fd < 0) {
	342	error_setg_file_open(errp, errno, il->evdev);
0e066b2c	343	return;
e0d2bd51 GH	344	}
	345	qemu_set_nonblock(il->fd);
	346
	347	rc = ioctl(il->fd, EVIOCGVERSION, &ver);
	348	if (rc < 0) {
	349	error_setg(errp, "%s: is not an evdev device", il->evdev);
	350	goto err_close;
	351	}
	352
	353	rc = ioctl(il->fd, EVIOCGBIT(0, sizeof(evtmap)), &evtmap);
	354
	355	if (evtmap & (1 << EV_REL)) {
	356	/* has relative axis -> assume mouse */
	357	qemu_set_fd_handler(il->fd, input_linux_event_mouse, NULL, il);
	358	} else if (evtmap & (1 << EV_ABS)) {
	359	/* has absolute axis -> not supported */
	360	error_setg(errp, "tablet/touchscreen not supported");
	361	goto err_close;
	362	} else if (evtmap & (1 << EV_KEY)) {
	363	/* has keys/buttons (and no axis) -> assume keyboard */
	364	qemu_set_fd_handler(il->fd, input_linux_event_keyboard, NULL, il);
	365	} else {
	366	/* Huh? What is this? */
	367	error_setg(errp, "unknown kind of input device");
	368	goto err_close;
	369	}
	370	input_linux_toggle_grab(il);
46d921be	371	QTAILQ_INSERT_TAIL(&inputs, il, next);
0e066b2c GH	372	il->initialized = true;
0e066b2c GH	373	return;
e0d2bd51 GH	374
	375	err_close:
	376	close(il->fd);
0e066b2c GH	377	return;
	378	}
	379
	380	static void input_linux_instance_finalize(Object *obj)
	381	{
	382	InputLinux *il = INPUT_LINUX(obj);
	383
	384	if (il->initialized) {
	385	QTAILQ_REMOVE(&inputs, il, next);
	386	close(il->fd);
	387	}
	388	g_free(il->evdev);
e0d2bd51 GH	389	}
e0d2bd51 GH	390
0e066b2c GH	391	static char input_linux_get_evdev(Object obj, Error **errp)
	392	{
	393	InputLinux *il = INPUT_LINUX(obj);
	394
	395	return g_strdup(il->evdev);
	396	}
	397
	398	static void input_linux_set_evdev(Object obj, const char value,
	399	Error **errp)
	400	{
	401	InputLinux *il = INPUT_LINUX(obj);
	402
	403	if (il->evdev) {
	404	error_setg(errp, "evdev property already set");
	405	return;
	406	}
	407	il->evdev = g_strdup(value);
	408	}
	409
	410	static bool input_linux_get_grab_all(Object obj, Error *errp)
	411	{
	412	InputLinux *il = INPUT_LINUX(obj);
	413
	414	return il->grab_all;
	415	}
	416
	417	static void input_linux_set_grab_all(Object *obj, bool value,
	418	Error **errp)
	419	{
	420	InputLinux *il = INPUT_LINUX(obj);
	421
	422	il->grab_all = value;
	423	}
	424
	425	static bool input_linux_get_repeat(Object obj, Error *errp)
	426	{
	427	InputLinux *il = INPUT_LINUX(obj);
	428
	429	return il->repeat;
	430	}
	431
	432	static void input_linux_set_repeat(Object *obj, bool value,
	433	Error **errp)
	434	{
	435	InputLinux *il = INPUT_LINUX(obj);
	436
	437	il->repeat = value;
	438	}
	439
	440	static void input_linux_instance_init(Object *obj)
	441	{
	442	object_property_add_str(obj, "evdev",
	443	input_linux_get_evdev,
	444	input_linux_set_evdev, NULL);
	445	object_property_add_bool(obj, "grab_all",
	446	input_linux_get_grab_all,
	447	input_linux_set_grab_all, NULL);
	448	object_property_add_bool(obj, "repeat",
	449	input_linux_get_repeat,
	450	input_linux_set_repeat, NULL);
	451	}
	452
	453	static void input_linux_class_init(ObjectClass oc, void data)
	454	{
455	UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
456
457	ucc->complete = input_linux_complete;
458	}
459
460	static const TypeInfo input_linux_info = {
461	.name = TYPE_INPUT_LINUX,
462	.parent = TYPE_OBJECT,
463	.class_size = sizeof(InputLinuxClass),
464	.class_init = input_linux_class_init,
465	.instance_size = sizeof(InputLinux),
466	.instance_init = input_linux_instance_init,
467	.instance_finalize = input_linux_instance_finalize,
468	.interfaces = (InterfaceInfo[]) {
469	{ TYPE_USER_CREATABLE },
470	{ }
471	}
e0d2bd51 GH	472	};
e0d2bd51 GH	473
0e066b2c	474	static void register_types(void)
e0d2bd51	475	{
0e066b2c	476	type_register_static(&input_linux_info);
e0d2bd51	477	}
0e066b2c GH	478
0e066b2c GH	479	type_init(register_types);