diff options
Diffstat (limited to 'src/libsystemd-terminal/idev-keyboard.c')
| -rw-r--r-- | src/libsystemd-terminal/idev-keyboard.c | 1159 |
1 files changed, 0 insertions, 1159 deletions
diff --git a/src/libsystemd-terminal/idev-keyboard.c b/src/libsystemd-terminal/idev-keyboard.c deleted file mode 100644 index 93f49e9458..0000000000 --- a/src/libsystemd-terminal/idev-keyboard.c +++ /dev/null @@ -1,1159 +0,0 @@ -/*-*- 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 <xkbcommon/xkbcommon.h> -#include <xkbcommon/xkbcommon-compose.h> -#include "sd-bus.h" -#include "sd-event.h" -#include "hashmap.h" -#include "macro.h" -#include "util.h" -#include "bus-util.h" -#include "idev.h" -#include "idev-internal.h" -#include "term-internal.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_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(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_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(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, -}; |