+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdbool.h>
-#include <stdlib.h>
-#include <systemd/sd-bus.h>
-#include <systemd/sd-event.h>
-#include <xkbcommon/xkbcommon.h>
-#include <xkbcommon/xkbcommon-compose.h>
-#include "bus-util.h"
-#include "hashmap.h"
-#include "idev.h"
-#include "idev-internal.h"
-#include "macro.h"
-#include "term-internal.h"
-#include "util.h"
-
-typedef struct kbdtbl kbdtbl;
-typedef struct kbdmap kbdmap;
-typedef struct kbdctx kbdctx;
-typedef struct idev_keyboard idev_keyboard;
-
-struct kbdtbl {
- unsigned long ref;
- struct xkb_compose_table *xkb_compose_table;
-};
-
-struct kbdmap {
- unsigned long ref;
- struct xkb_keymap *xkb_keymap;
- xkb_mod_index_t modmap[IDEV_KBDMOD_CNT];
- xkb_led_index_t ledmap[IDEV_KBDLED_CNT];
-};
-
-struct kbdctx {
- unsigned long ref;
- idev_context *context;
- struct xkb_context *xkb_context;
- struct kbdmap *kbdmap;
- struct kbdtbl *kbdtbl;
-
- sd_bus_slot *slot_locale_props_changed;
- sd_bus_slot *slot_locale_get_all;
-
- char *locale_lang;
- char *locale_x11_model;
- char *locale_x11_layout;
- char *locale_x11_variant;
- char *locale_x11_options;
- char *last_x11_model;
- char *last_x11_layout;
- char *last_x11_variant;
- char *last_x11_options;
-};
-
-struct idev_keyboard {
- idev_device device;
- kbdctx *kbdctx;
- kbdmap *kbdmap;
- kbdtbl *kbdtbl;
-
- struct xkb_state *xkb_state;
- struct xkb_compose_state *xkb_compose;
-
- usec_t repeat_delay;
- usec_t repeat_rate;
- sd_event_source *repeat_timer;
-
- uint32_t n_syms;
- idev_data evdata;
- idev_data repdata;
- uint32_t *compose_res;
-
- bool repeating : 1;
-};
-
-#define keyboard_from_device(_d) container_of((_d), idev_keyboard, device)
-
-#define KBDCTX_KEY "keyboard.context" /* hashmap key for global kbdctx */
-#define KBDXKB_SHIFT (8) /* xkb shifts evdev key-codes by 8 */
-#define KBDKEY_UP (0) /* KEY UP event value */
-#define KBDKEY_DOWN (1) /* KEY DOWN event value */
-#define KBDKEY_REPEAT (2) /* KEY REPEAT event value */
-
-static const idev_device_vtable keyboard_vtable;
-
-static int keyboard_update_kbdmap(idev_keyboard *k);
-static int keyboard_update_kbdtbl(idev_keyboard *k);
-
-/*
- * Keyboard Compose Tables
- */
-
-static kbdtbl *kbdtbl_ref(kbdtbl *kt) {
- if (kt) {
- assert_return(kt->ref > 0, NULL);
- ++kt->ref;
- }
-
- return kt;
-}
-
-static kbdtbl *kbdtbl_unref(kbdtbl *kt) {
- if (!kt)
- return NULL;
-
- assert_return(kt->ref > 0, NULL);
-
- if (--kt->ref > 0)
- return NULL;
-
- xkb_compose_table_unref(kt->xkb_compose_table);
- free(kt);
-
- return 0;
-}
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(kbdtbl*, kbdtbl_unref);
-
-static int kbdtbl_new_from_locale(kbdtbl **out, kbdctx *kc, const char *locale) {
- _cleanup_(kbdtbl_unrefp) kbdtbl *kt = NULL;
-
- assert_return(out, -EINVAL);
- assert_return(locale, -EINVAL);
-
- kt = new0(kbdtbl, 1);
- if (!kt)
- return -ENOMEM;
-
- kt->ref = 1;
-
- kt->xkb_compose_table = xkb_compose_table_new_from_locale(kc->xkb_context,
- locale,
- XKB_COMPOSE_COMPILE_NO_FLAGS);
- if (!kt->xkb_compose_table)
- return errno > 0 ? -errno : -EFAULT;
-
- *out = kt;
- kt = NULL;
- return 0;
-}
-
-/*
- * Keyboard Keymaps
- */
-
-static const char * const kbdmap_modmap[IDEV_KBDMOD_CNT] = {
- [IDEV_KBDMOD_IDX_SHIFT] = XKB_MOD_NAME_SHIFT,
- [IDEV_KBDMOD_IDX_CTRL] = XKB_MOD_NAME_CTRL,
- [IDEV_KBDMOD_IDX_ALT] = XKB_MOD_NAME_ALT,
- [IDEV_KBDMOD_IDX_LINUX] = XKB_MOD_NAME_LOGO,
- [IDEV_KBDMOD_IDX_CAPS] = XKB_MOD_NAME_CAPS,
-};
-
-static const char * const kbdmap_ledmap[IDEV_KBDLED_CNT] = {
- [IDEV_KBDLED_IDX_NUM] = XKB_LED_NAME_NUM,
- [IDEV_KBDLED_IDX_CAPS] = XKB_LED_NAME_CAPS,
- [IDEV_KBDLED_IDX_SCROLL] = XKB_LED_NAME_SCROLL,
-};
-
-static kbdmap *kbdmap_ref(kbdmap *km) {
- assert_return(km, NULL);
- assert_return(km->ref > 0, NULL);
-
- ++km->ref;
- return km;
-}
-
-static kbdmap *kbdmap_unref(kbdmap *km) {
- if (!km)
- return NULL;
-
- assert_return(km->ref > 0, NULL);
-
- if (--km->ref > 0)
- return NULL;
-
- xkb_keymap_unref(km->xkb_keymap);
- free(km);
-
- return 0;
-}
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(kbdmap*, kbdmap_unref);
-
-static int kbdmap_new_from_names(kbdmap **out,
- kbdctx *kc,
- const char *model,
- const char *layout,
- const char *variant,
- const char *options) {
- _cleanup_(kbdmap_unrefp) kbdmap *km = NULL;
- struct xkb_rule_names rmlvo = { };
- unsigned int i;
-
- assert_return(out, -EINVAL);
-
- km = new0(kbdmap, 1);
- if (!km)
- return -ENOMEM;
-
- km->ref = 1;
-
- rmlvo.rules = "evdev";
- rmlvo.model = model;
- rmlvo.layout = layout;
- rmlvo.variant = variant;
- rmlvo.options = options;
-
- errno = 0;
- km->xkb_keymap = xkb_keymap_new_from_names(kc->xkb_context, &rmlvo, 0);
- if (!km->xkb_keymap)
- return errno > 0 ? -errno : -EFAULT;
-
- for (i = 0; i < IDEV_KBDMOD_CNT; ++i) {
- const char *t = kbdmap_modmap[i];
-
- if (t)
- km->modmap[i] = xkb_keymap_mod_get_index(km->xkb_keymap, t);
- else
- km->modmap[i] = XKB_MOD_INVALID;
- }
-
- for (i = 0; i < IDEV_KBDLED_CNT; ++i) {
- const char *t = kbdmap_ledmap[i];
-
- if (t)
- km->ledmap[i] = xkb_keymap_led_get_index(km->xkb_keymap, t);
- else
- km->ledmap[i] = XKB_LED_INVALID;
- }
-
- *out = km;
- km = NULL;
- return 0;
-}
-
-/*
- * Keyboard Context
- */
-
-static int kbdctx_refresh_compose_table(kbdctx *kc, const char *lang) {
- kbdtbl *kt;
- idev_session *s;
- idev_device *d;
- Iterator i, j;
- int r;
-
- if (!lang)
- lang = "C";
-
- if (streq_ptr(kc->locale_lang, lang))
- return 0;
-
- r = free_and_strdup(&kc->locale_lang, lang);
- if (r < 0)
- return r;
-
- log_debug("idev-keyboard: new default compose table: [ %s ]", lang);
-
- r = kbdtbl_new_from_locale(&kt, kc, lang);
- if (r < 0) {
- /* TODO: We need to catch the case where no compose-file is
- * available. xkb doesn't tell us so far.. so we must not treat
- * it as a hard-failure but just continue. Preferably, we want
- * xkb to tell us exactly whether compilation failed or whether
- * there is no compose file available for this locale. */
- log_debug_errno(r, "idev-keyboard: cannot load compose-table for '%s': %m",
- lang);
- r = 0;
- kt = NULL;
- }
-
- kbdtbl_unref(kc->kbdtbl);
- kc->kbdtbl = kt;
-
- HASHMAP_FOREACH(s, kc->context->session_map, i)
- HASHMAP_FOREACH(d, s->device_map, j)
- if (idev_is_keyboard(d))
- keyboard_update_kbdtbl(keyboard_from_device(d));
-
- return 0;
-}
-
-static void move_str(char **dest, char **src) {
- free(*dest);
- *dest = *src;
- *src = NULL;
-}
-
-static int kbdctx_refresh_keymap(kbdctx *kc) {
- idev_session *s;
- idev_device *d;
- Iterator i, j;
- kbdmap *km;
- int r;
-
- if (kc->kbdmap &&
- streq_ptr(kc->locale_x11_model, kc->last_x11_model) &&
- streq_ptr(kc->locale_x11_layout, kc->last_x11_layout) &&
- streq_ptr(kc->locale_x11_variant, kc->last_x11_variant) &&
- streq_ptr(kc->locale_x11_options, kc->last_x11_options))
- return 0 ;
-
- move_str(&kc->last_x11_model, &kc->locale_x11_model);
- move_str(&kc->last_x11_layout, &kc->locale_x11_layout);
- move_str(&kc->last_x11_variant, &kc->locale_x11_variant);
- move_str(&kc->last_x11_options, &kc->locale_x11_options);
-
- log_debug("idev-keyboard: new default keymap: [%s / %s / %s / %s]",
- kc->last_x11_model, kc->last_x11_layout, kc->last_x11_variant, kc->last_x11_options);
-
- /* TODO: add a fallback keymap that's compiled-in */
- r = kbdmap_new_from_names(&km, kc, kc->last_x11_model, kc->last_x11_layout,
- kc->last_x11_variant, kc->last_x11_options);
- if (r < 0)
- return log_debug_errno(r, "idev-keyboard: cannot create keymap from locale1: %m");
-
- kbdmap_unref(kc->kbdmap);
- kc->kbdmap = km;
-
- HASHMAP_FOREACH(s, kc->context->session_map, i)
- HASHMAP_FOREACH(d, s->device_map, j)
- if (idev_is_keyboard(d))
- keyboard_update_kbdmap(keyboard_from_device(d));
-
- return 0;
-}
-
-static int kbdctx_set_locale(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
- kbdctx *kc = userdata;
- const char *s, *ctype = NULL, *lang = NULL;
- int r;
-
- r = sd_bus_message_enter_container(m, 'a', "s");
- if (r < 0)
- goto error;
-
- while ((r = sd_bus_message_read(m, "s", &s)) > 0) {
- if (!ctype)
- ctype = startswith(s, "LC_CTYPE=");
- if (!lang)
- lang = startswith(s, "LANG=");
- }
-
- if (r < 0)
- goto error;
-
- r = sd_bus_message_exit_container(m);
- if (r < 0)
- goto error;
-
- kbdctx_refresh_compose_table(kc, ctype ? : lang);
- r = 0;
-
-error:
- if (r < 0)
- log_debug_errno(r, "idev-keyboard: cannot parse locale property from locale1: %m");
-
- return r;
-}
-
-static const struct bus_properties_map kbdctx_locale_map[] = {
- { "Locale", "as", kbdctx_set_locale, 0 },
- { "X11Model", "s", NULL, offsetof(kbdctx, locale_x11_model) },
- { "X11Layout", "s", NULL, offsetof(kbdctx, locale_x11_layout) },
- { "X11Variant", "s", NULL, offsetof(kbdctx, locale_x11_variant) },
- { "X11Options", "s", NULL, offsetof(kbdctx, locale_x11_options) },
-};
-
-static int kbdctx_locale_get_all_fn(sd_bus *bus,
- sd_bus_message *m,
- void *userdata,
- sd_bus_error *ret_err) {
- kbdctx *kc = userdata;
- int r;
-
- kc->slot_locale_get_all = sd_bus_slot_unref(kc->slot_locale_get_all);
-
- if (sd_bus_message_is_method_error(m, NULL)) {
- const sd_bus_error *error = sd_bus_message_get_error(m);
-
- log_debug("idev-keyboard: GetAll() on locale1 failed: %s: %s",
- error->name, error->message);
- return 0;
- }
-
- r = bus_message_map_all_properties(bus, m, kbdctx_locale_map, kc);
- if (r < 0) {
- log_debug("idev-keyboard: erroneous GetAll() reply from locale1");
- return 0;
- }
-
- kbdctx_refresh_keymap(kc);
- return 0;
-}
-
-static int kbdctx_query_locale(kbdctx *kc) {
- _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
- int r;
-
- kc->slot_locale_get_all = sd_bus_slot_unref(kc->slot_locale_get_all);
-
- r = sd_bus_message_new_method_call(kc->context->sysbus,
- &m,
- "org.freedesktop.locale1",
- "/org/freedesktop/locale1",
- "org.freedesktop.DBus.Properties",
- "GetAll");
- if (r < 0)
- goto error;
-
- r = sd_bus_message_append(m, "s", "org.freedesktop.locale1");
- if (r < 0)
- goto error;
-
- r = sd_bus_call_async(kc->context->sysbus,
- &kc->slot_locale_get_all,
- m,
- kbdctx_locale_get_all_fn,
- kc,
- 0);
- if (r < 0)
- goto error;
-
- return 0;
-
-error:
- return log_debug_errno(r, "idev-keyboard: cannot send GetAll to locale1: %m");
-}
-
-static int kbdctx_locale_props_changed_fn(sd_bus *bus,
- sd_bus_message *signal,
- void *userdata,
- sd_bus_error *ret_err) {
- kbdctx *kc = userdata;
- int r;
-
- kc->slot_locale_get_all = sd_bus_slot_unref(kc->slot_locale_get_all);
-
- /* skip interface name */
- r = sd_bus_message_skip(signal, "s");
- if (r < 0)
- goto error;
-
- r = bus_message_map_properties_changed(bus, signal, kbdctx_locale_map, kc);
- if (r < 0)
- goto error;
-
- if (r > 0) {
- r = kbdctx_query_locale(kc);
- if (r < 0)
- return r;
- }
-
- kbdctx_refresh_keymap(kc);
- return 0;
-
-error:
- return log_debug_errno(r, "idev-keyboard: cannot handle PropertiesChanged from locale1: %m");
-}
-
-static int kbdctx_setup_bus(kbdctx *kc) {
- int r;
-
- r = sd_bus_add_match(kc->context->sysbus,
- &kc->slot_locale_props_changed,
- "type='signal',"
- "sender='org.freedesktop.locale1',"
- "interface='org.freedesktop.DBus.Properties',"
- "member='PropertiesChanged',"
- "path='/org/freedesktop/locale1'",
- kbdctx_locale_props_changed_fn,
- kc);
- if (r < 0)
- return log_debug_errno(r, "idev-keyboard: cannot setup locale1 link: %m");
-
- return kbdctx_query_locale(kc);
-}
-
-static void kbdctx_log_fn(struct xkb_context *ctx, enum xkb_log_level lvl, const char *format, va_list args) {
- char buf[LINE_MAX];
- int sd_lvl;
-
- if (lvl >= XKB_LOG_LEVEL_DEBUG)
- sd_lvl = LOG_DEBUG;
- else if (lvl >= XKB_LOG_LEVEL_INFO)
- sd_lvl = LOG_INFO;
- else if (lvl >= XKB_LOG_LEVEL_WARNING)
- sd_lvl = LOG_INFO; /* most XKB warnings really are informational */
- else
- /* XKB_LOG_LEVEL_ERROR and worse */
- sd_lvl = LOG_ERR;
-
- snprintf(buf, sizeof(buf), "idev-xkb: %s", format);
- log_internalv(sd_lvl, 0, __FILE__, __LINE__, __func__, buf, args);
-}
-
-static kbdctx *kbdctx_ref(kbdctx *kc) {
- assert_return(kc, NULL);
- assert_return(kc->ref > 0, NULL);
-
- ++kc->ref;
- return kc;
-}
-
-static kbdctx *kbdctx_unref(kbdctx *kc) {
- if (!kc)
- return NULL;
-
- assert_return(kc->ref > 0, NULL);
-
- if (--kc->ref > 0)
- return NULL;
-
- free(kc->last_x11_options);
- free(kc->last_x11_variant);
- free(kc->last_x11_layout);
- free(kc->last_x11_model);
- free(kc->locale_x11_options);
- free(kc->locale_x11_variant);
- free(kc->locale_x11_layout);
- free(kc->locale_x11_model);
- free(kc->locale_lang);
- kc->slot_locale_get_all = sd_bus_slot_unref(kc->slot_locale_get_all);
- kc->slot_locale_props_changed = sd_bus_slot_unref(kc->slot_locale_props_changed);
- kc->kbdtbl = kbdtbl_unref(kc->kbdtbl);
- kc->kbdmap = kbdmap_unref(kc->kbdmap);
- xkb_context_unref(kc->xkb_context);
- hashmap_remove_value(kc->context->data_map, KBDCTX_KEY, kc);
- free(kc);
-
- return NULL;
-}
-
-DEFINE_TRIVIAL_CLEANUP_FUNC(kbdctx*, kbdctx_unref);
-
-static int kbdctx_new(kbdctx **out, idev_context *c) {
- _cleanup_(kbdctx_unrefp) kbdctx *kc = NULL;
- int r;
-
- assert_return(out, -EINVAL);
- assert_return(c, -EINVAL);
-
- kc = new0(kbdctx, 1);
- if (!kc)
- return -ENOMEM;
-
- kc->ref = 1;
- kc->context = c;
-
- errno = 0;
- kc->xkb_context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
- if (!kc->xkb_context)
- return errno > 0 ? -errno : -EFAULT;
-
- xkb_context_set_log_fn(kc->xkb_context, kbdctx_log_fn);
- xkb_context_set_log_level(kc->xkb_context, XKB_LOG_LEVEL_DEBUG);
-
- r = kbdctx_refresh_keymap(kc);
- if (r < 0)
- return r;
-
- r = kbdctx_refresh_compose_table(kc, NULL);
- if (r < 0)
- return r;
-
- if (c->sysbus) {
- r = kbdctx_setup_bus(kc);
- if (r < 0)
- return r;
- }
-
- r = hashmap_put(c->data_map, KBDCTX_KEY, kc);
- if (r < 0)
- return r;
-
- *out = kc;
- kc = NULL;
- return 0;
-}
-
-static int get_kbdctx(idev_context *c, kbdctx **out) {
- kbdctx *kc;
-
- assert_return(c, -EINVAL);
- assert_return(out, -EINVAL);
-
- kc = hashmap_get(c->data_map, KBDCTX_KEY);
- if (kc) {
- *out = kbdctx_ref(kc);
- return 0;
- }
-
- return kbdctx_new(out, c);
-}
-
-/*
- * Keyboard Devices
- */
-
-bool idev_is_keyboard(idev_device *d) {
- return d && d->vtable == &keyboard_vtable;
-}
-
-idev_device *idev_find_keyboard(idev_session *s, const char *name) {
- char *kname;
-
- assert_return(s, NULL);
- assert_return(name, NULL);
-
- kname = strjoina("keyboard/", name);
- return hashmap_get(s->device_map, kname);
-}
-
-static int keyboard_raise_data(idev_keyboard *k, idev_data *data) {
- idev_device *d = &k->device;
- int r;
-
- r = idev_session_raise_device_data(d->session, d, data);
- if (r < 0)
- log_debug_errno(r, "idev-keyboard: %s/%s: error while raising data event: %m",
- d->session->name, d->name);
-
- return r;
-}
-
-static int keyboard_resize_bufs(idev_keyboard *k, uint32_t n_syms) {
- uint32_t *t;
-
- if (n_syms <= k->n_syms)
- return 0;
-
- t = realloc(k->compose_res, sizeof(*t) * n_syms);
- if (!t)
- return -ENOMEM;
- k->compose_res = t;
-
- t = realloc(k->evdata.keyboard.keysyms, sizeof(*t) * n_syms);
- if (!t)
- return -ENOMEM;
- k->evdata.keyboard.keysyms = t;
-
- t = realloc(k->evdata.keyboard.codepoints, sizeof(*t) * n_syms);
- if (!t)
- return -ENOMEM;
- k->evdata.keyboard.codepoints = t;
-
- t = realloc(k->repdata.keyboard.keysyms, sizeof(*t) * n_syms);
- if (!t)
- return -ENOMEM;
- k->repdata.keyboard.keysyms = t;
-
- t = realloc(k->repdata.keyboard.codepoints, sizeof(*t) * n_syms);
- if (!t)
- return -ENOMEM;
- k->repdata.keyboard.codepoints = t;
-
- k->n_syms = n_syms;
- return 0;
-}
-
-static unsigned int keyboard_read_compose(idev_keyboard *k, const xkb_keysym_t **out) {
- _cleanup_free_ char *t = NULL;
- term_utf8 u8 = { };
- char buf[256], *p;
- size_t flen = 0;
- int i, r;
-
- r = xkb_compose_state_get_utf8(k->xkb_compose, buf, sizeof(buf));
- if (r >= (int)sizeof(buf)) {
- t = malloc(r + 1);
- if (!t)
- return 0;
-
- xkb_compose_state_get_utf8(k->xkb_compose, t, r + 1);
- p = t;
- } else {
- p = buf;
- }
-
- for (i = 0; i < r; ++i) {
- uint32_t *ucs;
- size_t len, j;
-
- len = term_utf8_decode(&u8, &ucs, p[i]);
- if (len > 0) {
- r = keyboard_resize_bufs(k, flen + len);
- if (r < 0)
- return 0;
-
- for (j = 0; j < len; ++j)
- k->compose_res[flen++] = ucs[j];
- }
- }
-
- *out = k->compose_res;
- return flen;
-}
-
-static void keyboard_arm(idev_keyboard *k, usec_t usecs) {
- int r;
-
- if (usecs != 0) {
- usecs += now(CLOCK_MONOTONIC);
- r = sd_event_source_set_time(k->repeat_timer, usecs);
- if (r >= 0)
- sd_event_source_set_enabled(k->repeat_timer, SD_EVENT_ONESHOT);
- } else {
- sd_event_source_set_enabled(k->repeat_timer, SD_EVENT_OFF);
- }
-}
-
-static int keyboard_repeat_timer_fn(sd_event_source *source, uint64_t usec, void *userdata) {
- idev_keyboard *k = userdata;
-
- /* never feed REPEAT keys into COMPOSE */
-
- keyboard_arm(k, k->repeat_rate);
- return keyboard_raise_data(k, &k->repdata);
-}
-
-int idev_keyboard_new(idev_device **out, idev_session *s, const char *name) {
- _cleanup_(idev_device_freep) idev_device *d = NULL;
- idev_keyboard *k;
- char *kname;
- int r;
-
- assert_return(out, -EINVAL);
- assert_return(s, -EINVAL);
- assert_return(name, -EINVAL);
-
- k = new0(idev_keyboard, 1);
- if (!k)
- return -ENOMEM;
-
- d = &k->device;
- k->device = IDEV_DEVICE_INIT(&keyboard_vtable, s);
- k->repeat_delay = 250 * USEC_PER_MSEC;
- k->repeat_rate = 30 * USEC_PER_MSEC;
-
- /* TODO: add key-repeat configuration */
-
- r = get_kbdctx(s->context, &k->kbdctx);
- if (r < 0)
- return r;
-
- r = keyboard_update_kbdmap(k);
- if (r < 0)
- return r;
-
- r = keyboard_update_kbdtbl(k);
- if (r < 0)
- return r;
-
- r = keyboard_resize_bufs(k, 8);
- if (r < 0)
- return r;
-
- r = sd_event_add_time(s->context->event,
- &k->repeat_timer,
- CLOCK_MONOTONIC,
- 0,
- 10 * USEC_PER_MSEC,
- keyboard_repeat_timer_fn,
- k);
- if (r < 0)
- return r;
-
- r = sd_event_source_set_enabled(k->repeat_timer, SD_EVENT_OFF);
- if (r < 0)
- return r;
-
- kname = strjoina("keyboard/", name);
- r = idev_device_add(d, kname);
- if (r < 0)
- return r;
-
- if (out)
- *out = d;
- d = NULL;
- return 0;
-}
-
-static void keyboard_free(idev_device *d) {
- idev_keyboard *k = keyboard_from_device(d);
-
- xkb_compose_state_unref(k->xkb_compose);
- xkb_state_unref(k->xkb_state);
- free(k->repdata.keyboard.codepoints);
- free(k->repdata.keyboard.keysyms);
- free(k->evdata.keyboard.codepoints);
- free(k->evdata.keyboard.keysyms);
- free(k->compose_res);
- k->repeat_timer = sd_event_source_unref(k->repeat_timer);
- k->kbdtbl = kbdtbl_unref(k->kbdtbl);
- k->kbdmap = kbdmap_unref(k->kbdmap);
- k->kbdctx = kbdctx_unref(k->kbdctx);
- free(k);
-}
-
-static int8_t guess_ascii(struct xkb_state *state, uint32_t code, uint32_t n_syms, const uint32_t *syms) {
- xkb_layout_index_t n_lo, lo;
- xkb_level_index_t lv;
- struct xkb_keymap *keymap;
- const xkb_keysym_t *s;
- int num;
-
- if (n_syms == 1 && syms[0] < 128 && syms[0] > 0)
- return syms[0];
-
- keymap = xkb_state_get_keymap(state);
- n_lo = xkb_keymap_num_layouts_for_key(keymap, code + KBDXKB_SHIFT);
-
- for (lo = 0; lo < n_lo; ++lo) {
- lv = xkb_state_key_get_level(state, code + KBDXKB_SHIFT, lo);
- num = xkb_keymap_key_get_syms_by_level(keymap, code + KBDXKB_SHIFT, lo, lv, &s);
- if (num == 1 && s[0] < 128 && s[0] > 0)
- return s[0];
- }
-
- return -1;
-}
-
-static int keyboard_fill(idev_keyboard *k,
- idev_data *dst,
- bool resync,
- uint16_t code,
- uint32_t value,
- uint32_t n_syms,
- const uint32_t *keysyms) {
- idev_data_keyboard *kev;
- uint32_t i;
- int r;
-
- assert(dst == &k->evdata || dst == &k->repdata);
-
- r = keyboard_resize_bufs(k, n_syms);
- if (r < 0)
- return r;
-
- dst->type = IDEV_DATA_KEYBOARD;
- dst->resync = resync;
- kev = &dst->keyboard;
- kev->ascii = guess_ascii(k->xkb_state, code, n_syms, keysyms);
- kev->value = value;
- kev->keycode = code;
- kev->mods = 0;
- kev->consumed_mods = 0;
- kev->n_syms = n_syms;
- memcpy(kev->keysyms, keysyms, sizeof(*keysyms) * n_syms);
-
- for (i = 0; i < n_syms; ++i) {
- kev->codepoints[i] = xkb_keysym_to_utf32(keysyms[i]);
- if (!kev->codepoints[i])
- kev->codepoints[i] = 0xffffffffUL;
- }
-
- for (i = 0; i < IDEV_KBDMOD_CNT; ++i) {
- if (k->kbdmap->modmap[i] == XKB_MOD_INVALID)
- continue;
-
- r = xkb_state_mod_index_is_active(k->xkb_state, k->kbdmap->modmap[i], XKB_STATE_MODS_EFFECTIVE);
- if (r > 0)
- kev->mods |= 1 << i;
-
- r = xkb_state_mod_index_is_consumed(k->xkb_state, code + KBDXKB_SHIFT, k->kbdmap->modmap[i]);
- if (r > 0)
- kev->consumed_mods |= 1 << i;
- }
-
- return 0;
-}
-
-static void keyboard_repeat(idev_keyboard *k) {
- idev_data *evdata = &k->evdata;
- idev_data *repdata = &k->repdata;
- idev_data_keyboard *evkbd = &evdata->keyboard;
- idev_data_keyboard *repkbd = &repdata->keyboard;
- const xkb_keysym_t *keysyms;
- idev_device *d = &k->device;
- bool repeats;
- int r, num;
-
- if (evdata->resync) {
- /*
- * We received a re-sync event. During re-sync, any number of
- * key-events may have been lost and sync-events may be
- * re-ordered. Always disable key-repeat for those events. Any
- * following event will trigger it again.
- */
-
- k->repeating = false;
- keyboard_arm(k, 0);
- return;
- }
-
- repeats = xkb_keymap_key_repeats(k->kbdmap->xkb_keymap, evkbd->keycode + KBDXKB_SHIFT);
-
- if (k->repeating && repkbd->keycode == evkbd->keycode) {
- /*
- * We received an event for the key we currently repeat. If it
- * was released, stop key-repeat. Otherwise, ignore the event.
- */
-
- if (evkbd->value == KBDKEY_UP) {
- k->repeating = false;
- keyboard_arm(k, 0);
- }
- } else if (evkbd->value == KBDKEY_DOWN && repeats) {
- /*
- * We received a key-down event for a key that repeats. The
- * previous condition caught keys we already repeat, so we know
- * this is a different key or no key-repeat is running. Start
- * new key-repeat.
- */
-
- errno = 0;
- num = xkb_state_key_get_syms(k->xkb_state, evkbd->keycode + KBDXKB_SHIFT, &keysyms);
- if (num < 0)
- r = errno > 0 ? errno : -EFAULT;
- else
- r = keyboard_fill(k, repdata, false, evkbd->keycode, KBDKEY_REPEAT, num, keysyms);
-
- if (r < 0) {
- log_debug_errno(r, "idev-keyboard: %s/%s: cannot set key-repeat: %m",
- d->session->name, d->name);
- k->repeating = false;
- keyboard_arm(k, 0);
- } else {
- k->repeating = true;
- keyboard_arm(k, k->repeat_delay);
- }
- } else if (k->repeating && !repeats) {
- /*
- * We received an event for a key that does not repeat, but we
- * currently repeat a previously received key. The new key is
- * usually a modifier, but might be any kind of key. In this
- * case, we continue repeating the old key, but update the
- * symbols according to the new state.
- */
-
- errno = 0;
- num = xkb_state_key_get_syms(k->xkb_state, repkbd->keycode + KBDXKB_SHIFT, &keysyms);
- if (num < 0)
- r = errno > 0 ? errno : -EFAULT;
- else
- r = keyboard_fill(k, repdata, false, repkbd->keycode, KBDKEY_REPEAT, num, keysyms);
-
- if (r < 0) {
- log_debug_errno(r, "idev-keyboard: %s/%s: cannot update key-repeat: %m",
- d->session->name, d->name);
- k->repeating = false;
- keyboard_arm(k, 0);
- }
- }
-}
-
-static int keyboard_feed_evdev(idev_keyboard *k, idev_data *data) {
- struct input_event *ev = &data->evdev.event;
- enum xkb_state_component compch;
- enum xkb_compose_status cstatus;
- const xkb_keysym_t *keysyms;
- idev_device *d = &k->device;
- int num, r;
-
- if (ev->type != EV_KEY || ev->value > KBDKEY_DOWN)
- return 0;
-
- /* TODO: We should audit xkb-actions, whether they need @resync as
- * flag. Most actions should just be executed, however, there might
- * be actions that depend on modifier-orders. Those should be
- * suppressed. */
-
- num = xkb_state_key_get_syms(k->xkb_state, ev->code + KBDXKB_SHIFT, &keysyms);
- compch = xkb_state_update_key(k->xkb_state, ev->code + KBDXKB_SHIFT, ev->value);
-
- if (compch & XKB_STATE_LEDS) {
- /* TODO: update LEDs */
- }
-
- if (num < 0) {
- r = num;
- goto error;
- }
-
- if (k->xkb_compose && ev->value == KBDKEY_DOWN) {
- if (num == 1 && !data->resync) {
- xkb_compose_state_feed(k->xkb_compose, keysyms[0]);
- cstatus = xkb_compose_state_get_status(k->xkb_compose);
- } else {
- cstatus = XKB_COMPOSE_CANCELLED;
- }
-
- switch (cstatus) {
- case XKB_COMPOSE_NOTHING:
- /* keep produced keysyms and forward unchanged */
- break;
- case XKB_COMPOSE_COMPOSING:
- /* consumed by compose-state, drop keysym */
- keysyms = NULL;
- num = 0;
- break;
- case XKB_COMPOSE_COMPOSED:
- /* compose-state produced sth, replace keysym */
- num = keyboard_read_compose(k, &keysyms);
- xkb_compose_state_reset(k->xkb_compose);
- break;
- case XKB_COMPOSE_CANCELLED:
- /* canceled compose, reset, forward cancellation sym */
- xkb_compose_state_reset(k->xkb_compose);
- break;
- }
- } else if (k->xkb_compose &&
- num == 1 &&
- keysyms[0] == XKB_KEY_Multi_key &&
- !data->resync &&
- ev->value == KBDKEY_UP) {
- /* Reset compose state on Multi-Key UP events. This effectively
- * requires you to hold the key during the whole sequence. I
- * think it's pretty handy to avoid accidental
- * Compose-sequences, but this may break Compose for disabled
- * people. We really need to make this opional! (TODO) */
- xkb_compose_state_reset(k->xkb_compose);
- }
-
- if (ev->value == KBDKEY_UP) {
- /* never produce keysyms for UP */
- keysyms = NULL;
- num = 0;
- }
-
- r = keyboard_fill(k, &k->evdata, data->resync, ev->code, ev->value, num, keysyms);
- if (r < 0)
- goto error;
-
- keyboard_repeat(k);
- return keyboard_raise_data(k, &k->evdata);
-
-error:
- log_debug_errno(r, "idev-keyboard: %s/%s: cannot handle event: %m",
- d->session->name, d->name);
- k->repeating = false;
- keyboard_arm(k, 0);
- return 0;
-}
-
-static int keyboard_feed(idev_device *d, idev_data *data) {
- idev_keyboard *k = keyboard_from_device(d);
-
- switch (data->type) {
- case IDEV_DATA_RESYNC:
- /*
- * If the underlying device is re-synced, key-events might be
- * sent re-ordered. Thus, we don't know which key was pressed
- * last. Key-repeat might get confused, hence, disable it
- * during re-syncs. The first following event will enable it
- * again.
- */
-
- k->repeating = false;
- keyboard_arm(k, 0);
- return 0;
- case IDEV_DATA_EVDEV:
- return keyboard_feed_evdev(k, data);
- default:
- return 0;
- }
-}
-
-static int keyboard_update_kbdmap(idev_keyboard *k) {
- idev_device *d = &k->device;
- struct xkb_state *state;
- kbdmap *km;
- int r;
-
- assert(k);
-
- km = k->kbdctx->kbdmap;
- if (km == k->kbdmap)
- return 0;
-
- errno = 0;
- state = xkb_state_new(km->xkb_keymap);
- if (!state) {
- r = errno > 0 ? -errno : -EFAULT;
- goto error;
- }
-
- kbdmap_unref(k->kbdmap);
- k->kbdmap = kbdmap_ref(km);
- xkb_state_unref(k->xkb_state);
- k->xkb_state = state;
-
- /* TODO: On state-change, we should trigger a resync so the whole
- * event-state is flushed into the new xkb-state. libevdev currently
- * does not support that, though. */
-
- return 0;
-
-error:
- return log_debug_errno(r, "idev-keyboard: %s/%s: cannot adopt new keymap: %m",
- d->session->name, d->name);
-}
-
-static int keyboard_update_kbdtbl(idev_keyboard *k) {
- idev_device *d = &k->device;
- struct xkb_compose_state *compose = NULL;
- kbdtbl *kt;
- int r;
-
- assert(k);
-
- kt = k->kbdctx->kbdtbl;
- if (kt == k->kbdtbl)
- return 0;
-
- if (kt) {
- errno = 0;
- compose = xkb_compose_state_new(kt->xkb_compose_table, XKB_COMPOSE_STATE_NO_FLAGS);
- if (!compose) {
- r = errno > 0 ? -errno : -EFAULT;
- goto error;
- }
- }
-
- kbdtbl_unref(k->kbdtbl);
- k->kbdtbl = kbdtbl_ref(kt);
- xkb_compose_state_unref(k->xkb_compose);
- k->xkb_compose = compose;
-
- return 0;
-
-error:
- return log_debug_errno(r, "idev-keyboard: %s/%s: cannot adopt new compose table: %m",
- d->session->name, d->name);
-}
-
-static const idev_device_vtable keyboard_vtable = {
- .free = keyboard_free,
- .feed = keyboard_feed,
-};
~ianmdlvl / elogind.git / blobdiff