+++ /dev/null
-/*
- * fakevt - Fake Terminal Helper
- *
- * Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/*
- * Fake Terminal
- * This is a daemon which is run system wide and listens for input devices. It
- * is seat-aware and everything affects only the seat where the input data was
- * received.
- * On special key-combinations this sends a SIGUSR1 and SIGUSR2 to all global
- * kmscon instances. This will notify kmscon to activate or deactivate the
- * fake-seat. This does not affect seat0 if it uses real-VTs.
- *
- * This should be used for debugging only! You may create an emergency tool
- * based on this, but then you should probably improve the logic a bit.
- */
-
-#include <errno.h>
-#include <paths.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/signalfd.h>
-#include <X11/keysym.h>
-#include "conf.h"
-#include "eloop.h"
-#include "log.h"
-#include "static_misc.h"
-#include "uterm.h"
-
-struct fakevt_app {
- struct ev_eloop *eloop;
-
- struct uterm_monitor *mon;
- struct kmscon_dlist seats;
-};
-
-struct fakevt_seat {
- struct kmscon_dlist list;
- struct fakevt_app *app;
-
- bool active;
- struct uterm_monitor_seat *useat;
- char *sname;
-
- struct uterm_input *input;
-};
-
-struct {
- bool debug;
- bool verbose;
- bool help;
- bool silent;
- bool exit;
-
- bool all_seats;
- char **seats;
-
- char *xkb_layout;
- char *xkb_variant;
- char *xkb_options;
-} fakevt_conf;
-
-static void sig_generic(struct ev_eloop *eloop, struct signalfd_siginfo *info,
- void *data)
-{
- struct fakevt_app *app = data;
-
- ev_eloop_exit(app->eloop);
- log_info("terminating due to caught signal %d", info->ssi_signo);
-}
-
-static void activate_seat(struct fakevt_seat *seat)
-{
- log_info("activating kmscon");
- system("killall -SIGUSR1 kmscon");
-}
-
-static void deactivate_seat(struct fakevt_seat *seat)
-{
- log_info("deactivating kmscon");
- system("killall -SIGUSR2 kmscon");
-}
-
-static void input_event(struct uterm_input *input,
- struct uterm_input_event *ev,
- void *data)
-{
- struct fakevt_seat *seat = data;
-
- if (UTERM_INPUT_HAS_MODS(ev, UTERM_CONTROL_MASK | UTERM_MOD4_MASK)) {
- if (ev->keysym == XK_F12) {
- if (seat->active)
- deactivate_seat(seat);
- else
- activate_seat(seat);
- seat->active = !seat->active;
- }
- }
-}
-
-static void seat_new(struct fakevt_app *app,
- struct uterm_monitor_seat *useat,
- const char *sname)
-{
- struct fakevt_seat *seat;
- int ret;
- unsigned int i;
- bool found;
-
- found = false;
- if (fakevt_conf.all_seats) {
- found = true;
- } else {
- for (i = 0; fakevt_conf.seats[i]; ++i) {
- if (!strcmp(fakevt_conf.seats[i], sname)) {
- found = true;
- break;
- }
- }
- }
-
- if (!found) {
- log_info("ignoring seat %s as not specified in seat-list",
- sname);
- return;
- }
-
- seat = malloc(sizeof(*seat));
- if (!seat)
- return;
- memset(seat, 0, sizeof(*seat));
- seat->app = app;
- seat->useat = useat;
- seat->active = false;
-
- seat->sname = strdup(sname);
- if (!seat->sname) {
- log_err("cannot allocate memory for seat name");
- goto err_free;
- }
-
- ret = uterm_input_new(&seat->input, app->eloop,
- fakevt_conf.xkb_layout,
- fakevt_conf.xkb_variant,
- fakevt_conf.xkb_options);
- if (ret)
- goto err_name;
-
- ret = uterm_input_register_cb(seat->input, input_event, seat);
- if (ret)
- goto err_input;
-
- uterm_input_wake_up(seat->input);
- uterm_monitor_set_seat_data(seat->useat, seat);
- kmscon_dlist_link(&app->seats, &seat->list);
-
- log_info("new seat %s", seat->sname);
- return;
-
-err_input:
- uterm_input_unref(seat->input);
-err_name:
- free(seat->sname);
-err_free:
- free(seat);
-}
-
-static void seat_free(struct fakevt_seat *seat)
-{
- log_info("free seat %s", seat->sname);
-
- kmscon_dlist_unlink(&seat->list);
- uterm_monitor_set_seat_data(seat->useat, NULL);
- uterm_input_unregister_cb(seat->input, input_event, seat);
- uterm_input_unref(seat->input);
- free(seat->sname);
- free(seat);
-}
-
-static void monitor_event(struct uterm_monitor *mon,
- struct uterm_monitor_event *ev,
- void *data)
-{
- struct fakevt_app *app = data;
- struct fakevt_seat *seat;
-
- switch (ev->type) {
- case UTERM_MONITOR_NEW_SEAT:
- seat_new(app, ev->seat, ev->seat_name);
- break;
- case UTERM_MONITOR_FREE_SEAT:
- if (ev->seat_data)
- seat_free(ev->seat_data);
- break;
- case UTERM_MONITOR_NEW_DEV:
- seat = ev->seat_data;
- if (!seat)
- break;
- if (ev->dev_type == UTERM_MONITOR_INPUT)
- uterm_input_add_dev(seat->input, ev->dev_node);
- break;
- case UTERM_MONITOR_FREE_DEV:
- seat = ev->seat_data;
- if (!seat)
- break;
- if (ev->dev_type == UTERM_MONITOR_INPUT)
- uterm_input_remove_dev(seat->input, ev->dev_node);
- break;
- }
-}
-
-static void destroy_app(struct fakevt_app *app)
-{
- uterm_monitor_unref(app->mon);
- ev_eloop_unregister_signal_cb(app->eloop, SIGINT, sig_generic, app);
- ev_eloop_unregister_signal_cb(app->eloop, SIGTERM, sig_generic, app);
- ev_eloop_unref(app->eloop);
-}
-
-static int setup_app(struct fakevt_app *app)
-{
- int ret;
-
- ret = ev_eloop_new(&app->eloop, log_llog);
- if (ret)
- goto err_app;
-
- ret = ev_eloop_register_signal_cb(app->eloop, SIGTERM,
- sig_generic, app);
- if (ret)
- goto err_app;
-
- ret = ev_eloop_register_signal_cb(app->eloop, SIGINT,
- sig_generic, app);
- if (ret)
- goto err_app;
-
- kmscon_dlist_init(&app->seats);
-
- ret = uterm_monitor_new(&app->mon, app->eloop, monitor_event, app);
- if (ret)
- goto err_app;
-
- uterm_monitor_scan(app->mon);
-
- return 0;
-
-err_app:
- destroy_app(app);
- return ret;
-}
-
-static void print_help()
-{
- /*
- * Usage/Help information
- * This should be scaled to a maximum of 80 characters per line:
- *
- * 80 char line:
- * | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
- * "12345678901234567890123456789012345678901234567890123456789012345678901234567890\n"
- * 80 char line starting with tab:
- * |10| 20 | 30 | 40 | 50 | 60 | 70 | 80 |
- * "\t901234567890123456789012345678901234567890123456789012345678901234567890\n"
- */
- fprintf(stderr,
- "Usage:\n"
- "\t%1$s [options]\n"
- "\t%1$s -h [options]\n"
- "\n"
- "You can prefix boolean options with \"no-\" to negate it. If an argument is\n"
- "given multiple times, only the last argument matters if not otherwise stated.\n"
- "\n"
- "General Options:\n"
- "\t-h, --help [off] Print this help and exit\n"
- "\t-v, --verbose [off] Print verbose messages\n"
- "\t --debug [off] Enable debug mode\n"
- "\t --silent [off] Suppress notices and warnings\n"
- "\t --seats <list,of,seats> [seat0] Select seats or pass 'all' to make\n"
- "\t fakevt run on all seats\n"
- "\n"
- "Input Device Options:\n"
- "\t --xkb-layout <layout> [us] Set XkbLayout for input devices\n"
- "\t --xkb-variant <variant> [-] Set XkbVariant for input devices\n"
- "\t --xkb-options <options> [-] Set XkbOptions for input devices\n",
- "fakevt");
- /*
- * 80 char line:
- * | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
- * "12345678901234567890123456789012345678901234567890123456789012345678901234567890\n"
- * 80 char line starting with tab:
- * |10| 20 | 30 | 40 | 50 | 60 | 70 | 80 |
- * "\t901234567890123456789012345678901234567890123456789012345678901234567890\n"
- */
-}
-
-static int aftercheck_debug(struct conf_option *opt, int argc, char **argv,
- int idx)
-{
- /* --debug implies --verbose */
- if (fakevt_conf.debug)
- fakevt_conf.verbose = 1;
-
- return 0;
-}
-
-static int aftercheck_help(struct conf_option *opt, int argc, char **argv,
- int idx)
-{
- /* exit after printing --help information */
- if (fakevt_conf.help) {
- print_help();
- fakevt_conf.exit = true;
- }
-
- return 0;
-}
-
-static int aftercheck_seats(struct conf_option *opt, int argc, char **argv,
- int idx)
-{
- if (fakevt_conf.seats[0] &&
- !fakevt_conf.seats[1] &&
- !strcmp(fakevt_conf.seats[0], "all"))
- fakevt_conf.all_seats = true;
-
- return 0;
-}
-
-static char *def_seats[] = { "seat0", NULL };
-
-struct conf_option options[] = {
- CONF_OPTION_BOOL('h', "help", aftercheck_help, &fakevt_conf.help, false),
- CONF_OPTION_BOOL('v', "verbose", NULL, &fakevt_conf.verbose, false),
- CONF_OPTION_BOOL(0, "debug", aftercheck_debug, &fakevt_conf.debug, false),
- CONF_OPTION_BOOL(0, "silent", NULL, &fakevt_conf.silent, false),
- CONF_OPTION_STRING(0, "xkb-layout", NULL, &fakevt_conf.xkb_layout, "us"),
- CONF_OPTION_STRING(0, "xkb-variant", NULL, &fakevt_conf.xkb_variant, ""),
- CONF_OPTION_STRING(0, "xkb-options", NULL, &fakevt_conf.xkb_options, ""),
- CONF_OPTION_STRING_LIST(0, "seats", aftercheck_seats, &fakevt_conf.seats, def_seats),
-};
-
-int main(int argc, char **argv)
-{
- int ret;
- struct fakevt_app app;
- size_t onum;
-
- onum = sizeof(options) / sizeof(*options);
- ret = conf_parse_argv(options, onum, argc, argv);
- if (ret)
- goto err_out;
-
- if (fakevt_conf.exit) {
- conf_free(options, onum);
- return EXIT_SUCCESS;
- }
-
- if (!fakevt_conf.debug && !fakevt_conf.verbose && fakevt_conf.silent)
- log_set_config(&LOG_CONFIG_WARNING(0, 0, 0, 0));
- else
- log_set_config(&LOG_CONFIG_INFO(fakevt_conf.debug,
- fakevt_conf.verbose));
-
- log_print_init("fakevt");
-
- memset(&app, 0, sizeof(app));
- ret = setup_app(&app);
- if (ret)
- goto err_out;
-
- ev_eloop_run(app.eloop, -1);
-
- destroy_app(&app);
- conf_free(options, onum);
- log_info("exiting");
-
- return EXIT_SUCCESS;
-
-err_out:
- conf_free(options, onum);
- log_err("cannot initialize fakevt, errno %d: %s", ret, strerror(-ret));
- return -ret;
-}
projects / platform / upstream / kmscon.git / commitdiff