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#define _GNU_SOURCE
#include <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
#include <wayland-client.h>
#include <xkbcommon/xkbcommon.h>
#include "common.h"
#include "keyboard.h"
#include "util.h"
#include "virtual-keyboard-unstable-v1-client-protocol.h"
extern const char keymap_ascii_raw[];
static void
get_keymap(struct wlrctl_keyboard_command *cmd)
{
int size = strlen(keymap_ascii_raw) + 1;
#if defined(MEMFD_CREATE)
int fd = memfd_create("keymap", 0);
#elif defined(__FreeBSD__)
// memfd_create on FreeBSD 13 is SHM_ANON without sealing support
int fd = shm_open(SHM_ANON, O_RDWR, 0600);
#else
char name[] = "/tmp/keymap-XXXXXX";
int fd = mkstemp(name);
unlink(name);
#endif
if(ftruncate(fd, size) < 0) {
die("Could not allocate shm for keymap\n");
};
void *keymap_data =
mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
strcpy(keymap_data, keymap_ascii_raw);
munmap(keymap_data, size);
cmd->keymap.format = WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1;
cmd->keymap.fd = fd;
cmd->keymap.size = size;
}
static void
send_key(struct zwp_virtual_keyboard_v1 *kbd, char c)
{
zwp_virtual_keyboard_v1_key(kbd, timestamp(), c - 8, WL_KEYBOARD_KEY_STATE_PRESSED);
zwp_virtual_keyboard_v1_key(kbd, timestamp(), c - 8, WL_KEYBOARD_KEY_STATE_RELEASED);
}
static void
keyboard_type(struct wlrctl_keyboard_command *cmd, const char *text)
{
int len = strlen(text);
for (int i = 0; i < len; i++) {
send_key(cmd->device, text[i]);
}
}
static void
complete_keyboard(void *data, struct wl_callback *callback, uint32_t serial)
{
struct wlrctl *state = data;
wl_callback_destroy(callback);
state->running = false;
destroy_keyboard(state);
}
static struct wl_callback_listener completed_listener = {
.done = complete_keyboard
};
static enum keyboard_action
parse_action(const char *action)
{
static const struct token actions[] = {
{"type", KEYBOARD_ACTION_TYPE},
{NULL, KEYBOARD_ACTION_UNSPEC}
};
return matchtok(actions, action);
}
static bool
is_ascii(const char str[])
{
for (int i = 0; str[i] != '\0'; i++) {
if (!isascii(str[i])) {
return false;
}
}
return true;
}
void
prepare_keyboard(struct wlrctl *state, int argc, char *argv[])
{
struct wlrctl_keyboard_command *cmd =
calloc(1, sizeof (struct wlrctl_keyboard_command));
assert(cmd);
if (argc == 0) {
die("Missing keyboard action\n");
}
char *action = argv[0];
cmd->action = parse_action(action);
switch (cmd->action) {
case KEYBOARD_ACTION_TYPE:
if (argc < 2) {
die("Missing text to type!\n");
}
if (is_ascii(argv[1])) {
cmd->mods_depressed = 0;
cmd->text = strdup(argv[1]);
} else {
die("Only ascii strings are currently supported\n");
}
if (argc >= 3 && strcmp(argv[2], "modifiers")) {
die("Invalid argument: '%s'\n", argv[2]);
} else if (argc == 3) {
die("No modifiers provided\n");
} else if (argc == 4) {
char *keys = (char *)malloc(strlen(argv[3]) + 1);
strcpy(keys, argv[3]);
char *key;
key = strtok(keys, ",");
while (key != NULL) {
for (size_t i = 0; i < strlen(key); i++) {
key[i] = toupper((unsigned char) key[i]);
}
if (strcmp(key, "SHIFT") == 0) {
cmd->mods_depressed |= 1;
} else if (strcmp(key, "CTRL") == 0) {
cmd->mods_depressed |= 4;
} else if (strcmp(key, "ALT") == 0) {
cmd->mods_depressed |= 8;
} else if (strcmp(key, "SUPER") == 0) {
cmd->mods_depressed |= 64;
} else {
die("Unsupported modifier: '%s'\n", key);
}
key = strtok(NULL, ",");
}
free(keys);
} else if (argc >= 5) {
die("Invalid argument: '%s'\n", argv[4]);
}
break;
case KEYBOARD_ACTION_UNSPEC:
die("Unknown keyboard action: '%s'\n", action);
break;
}
cmd->state = state;
state->cmd = cmd;
}
void
run_keyboard(struct wlrctl *state)
{
struct wlrctl_keyboard_command *cmd = state->cmd;
cmd->device =
zwp_virtual_keyboard_manager_v1_create_virtual_keyboard(
state->vkbd_mgr, state->seat
);
cmd->xkb_context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
get_keymap(cmd);
zwp_virtual_keyboard_v1_keymap(cmd->device,
cmd->keymap.format, cmd->keymap.fd, cmd->keymap.size
);
close(cmd->keymap.fd);
switch (cmd->action) {
case KEYBOARD_ACTION_TYPE:
zwp_virtual_keyboard_v1_modifiers(cmd->device, cmd->mods_depressed, 0, 0, 0);
keyboard_type(cmd, cmd->text);
break;
default:
break;
}
struct wl_callback *callback = wl_display_sync(state->display);
wl_callback_add_listener(callback, &completed_listener, state);
}
void destroy_keyboard(struct wlrctl *state)
{
struct wlrctl_keyboard_command *cmd = state->cmd;
zwp_virtual_keyboard_v1_destroy(cmd->device);
free(cmd);
}
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