mirror of
https://github.com/robotn/gohook.git
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507 lines
13 KiB
C
507 lines
13 KiB
C
/* Copyright (C) 2006-2017 Alexander Barker.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <X11/Xlib.h>
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#ifdef USE_XKB
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#include <X11/XKBlib.h>
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#endif
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#ifdef USE_XF86MISC
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#include <X11/extensions/xf86misc.h>
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#include <X11/extensions/xf86mscstr.h>
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#endif
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#if defined(USE_XINERAMA) && !defined(USE_XRANDR)
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#include <X11/extensions/Xinerama.h>
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#elif defined(USE_XRANDR)
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#include <pthread.h>
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#include <X11/extensions/Xrandr.h>
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#endif
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#ifdef USE_XT
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#include <X11/Intrinsic.h>
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static XtAppContext xt_context;
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static Display *xt_disp;
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#endif
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#include "../iohook.h"
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#include "input.h"
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// #include "../logger.h"
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Display *properties_disp;
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#ifdef USE_XRANDR
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static pthread_mutex_t xrandr_mutex = PTHREAD_MUTEX_INITIALIZER;
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static XRRScreenResources *xrandr_resources = NULL;
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static void settings_cleanup_proc(void *arg) {
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if (pthread_mutex_trylock(&xrandr_mutex) == 0) {
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if (xrandr_resources != NULL) {
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XRRFreeScreenResources(xrandr_resources);
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xrandr_resources = NULL;
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}
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if (arg != NULL) {
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XCloseDisplay((Display *) arg);
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arg = NULL;
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}
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pthread_mutex_unlock(&xrandr_mutex);
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}
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}
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static void *settings_thread_proc(void *arg) {
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Display *settings_disp = XOpenDisplay(XDisplayName(NULL));;
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if (settings_disp != NULL) {
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logger(LOG_LEVEL_DEBUG, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay success.");
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pthread_cleanup_push(settings_cleanup_proc, settings_disp);
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int event_base = 0;
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int error_base = 0;
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if (XRRQueryExtension(settings_disp, &event_base, &error_base)) {
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Window root = XDefaultRootWindow(settings_disp);
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unsigned long event_mask = RRScreenChangeNotifyMask;
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XRRSelectInput(settings_disp, root, event_mask);
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XEvent ev;
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while(settings_disp != NULL) {
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XNextEvent(settings_disp, &ev);
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if (ev.type == event_base + RRScreenChangeNotifyMask) {
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logger(LOG_LEVEL_DEBUG, "%s [%u]: Received XRRScreenChangeNotifyEvent.\n",
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__FUNCTION__, __LINE__);
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pthread_mutex_lock(&xrandr_mutex);
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if (xrandr_resources != NULL) {
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XRRFreeScreenResources(xrandr_resources);
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}
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xrandr_resources = XRRGetScreenResources(settings_disp, root);
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if (xrandr_resources == NULL) {
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logger(LOG_LEVEL_WARN, "%s [%u]: XRandR could not get screen resources!\n",
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__FUNCTION__, __LINE__);
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}
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pthread_mutex_unlock(&xrandr_mutex);
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}
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else {
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logger(LOG_LEVEL_WARN, "%s [%u]: XRandR is not currently available!\n",
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__FUNCTION__, __LINE__);
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}
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}
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}
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// Execute the thread cleanup handler.
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pthread_cleanup_pop(1);
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: XOpenDisplay failure!\n",
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__FUNCTION__, __LINE__);
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}
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return NULL;
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}
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#endif
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IOHOOK_API screen_data* hook_create_screen_info(unsigned char *count) {
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*count = 0;
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screen_data *screens = NULL;
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#if defined(USE_XINERAMA) && !defined(USE_XRANDR)
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if (XineramaIsActive(properties_disp)) {
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int xine_count = 0;
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XineramaScreenInfo *xine_info = XineramaQueryScreens(properties_disp, &xine_count);
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if (xine_info != NULL) {
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if (xine_count > UINT8_MAX) {
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*count = UINT8_MAX;
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logger(LOG_LEVEL_WARN, "%s [%u]: Screen count overflow detected!\n",
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__FUNCTION__, __LINE__);
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}
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else {
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*count = (uint8_t) xine_count;
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}
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screens = malloc(sizeof(screen_data) * xine_count);
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if (screens != NULL) {
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int i;
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for (i = 0; i < xine_count; i++) {
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screens[i] = (screen_data) {
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.number = xine_info[i].screen_number,
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.x = xine_info[i].x_org,
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.y = xine_info[i].y_org,
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.width = xine_info[i].width,
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.height = xine_info[i].height
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};
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}
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}
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XFree(xine_info);
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}
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}
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#elif defined(USE_XRANDR)
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pthread_mutex_lock(&xrandr_mutex);
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if (xrandr_resources != NULL) {
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int xrandr_count = xrandr_resources->ncrtc;
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if (xrandr_count > UINT8_MAX) {
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*count = UINT8_MAX;
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logger(LOG_LEVEL_WARN, "%s [%u]: Screen count overflow detected!\n",
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__FUNCTION__, __LINE__);
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}
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else {
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*count = (uint8_t) xrandr_count;
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}
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screens = malloc(sizeof(screen_data) * xrandr_count);
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if (screens != NULL) {
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int i;
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for (i = 0; i < xrandr_count; i++) {
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XRRCrtcInfo *crtc_info = XRRGetCrtcInfo(properties_disp, xrandr_resources, xrandr_resources->crtcs[i]);
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if (crtc_info != NULL) {
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screens[i] = (screen_data) {
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.number = i + 1,
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.x = crtc_info->x,
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.y = crtc_info->y,
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.width = crtc_info->width,
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.height = crtc_info->height
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};
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XRRFreeCrtcInfo(crtc_info);
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}
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else {
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logger(LOG_LEVEL_WARN, "%s [%u]: XRandr failed to return crtc information! (%#X)\n",
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__FUNCTION__, __LINE__, xrandr_resources->crtcs[i]);
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}
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}
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}
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}
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pthread_mutex_unlock(&xrandr_mutex);
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#else
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Screen* default_screen = DefaultScreenOfDisplay(properties_disp);
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if (default_screen->width > 0 && default_screen->height > 0) {
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screens = malloc(sizeof(screen_data));
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if (screens != NULL) {
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*count = 1;
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screens[0] = (screen_data) {
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.number = 1,
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.x = 0,
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.y = 0,
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.width = default_screen->width,
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.height = default_screen->height
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};
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}
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}
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#endif
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return screens;
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}
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IOHOOK_API long int hook_get_auto_repeat_rate() {
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bool successful = false;
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long int value = -1;
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unsigned int delay = 0, rate = 0;
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// Check and make sure we could connect to the x server.
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if (properties_disp != NULL) {
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#ifdef USE_XKB
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// Attempt to acquire the keyboard auto repeat rate using the XKB extension.
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if (!successful) {
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successful = XkbGetAutoRepeatRate(properties_disp, XkbUseCoreKbd, &delay, &rate);
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if (successful) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XkbGetAutoRepeatRate: %u.\n",
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__FUNCTION__, __LINE__, rate);
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}
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}
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#endif
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#ifdef USE_XF86MISC
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// Fallback to the XF86 Misc extension if available and other efforts failed.
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if (!successful) {
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XF86MiscKbdSettings kb_info;
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successful = (bool) XF86MiscGetKbdSettings(properties_disp, &kb_info);
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if (successful) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XF86MiscGetKbdSettings: %i.\n",
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__FUNCTION__, __LINE__, kbdinfo.rate);
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delay = (unsigned int) kbdinfo.delay;
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rate = (unsigned int) kbdinfo.rate;
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}
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}
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#endif
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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if (successful) {
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value = (long int) rate;
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}
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return value;
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}
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IOHOOK_API long int hook_get_auto_repeat_delay() {
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bool successful = false;
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long int value = -1;
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unsigned int delay = 0, rate = 0;
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// Check and make sure we could connect to the x server.
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if (properties_disp != NULL) {
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#ifdef USE_XKB
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// Attempt to acquire the keyboard auto repeat rate using the XKB extension.
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if (!successful) {
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successful = XkbGetAutoRepeatRate(properties_disp, XkbUseCoreKbd, &delay, &rate);
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if (successful) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XkbGetAutoRepeatRate: %u.\n",
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__FUNCTION__, __LINE__, delay);
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}
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}
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#endif
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#ifdef USE_XF86MISC
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// Fallback to the XF86 Misc extension if available and other efforts failed.
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if (!successful) {
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XF86MiscKbdSettings kb_info;
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successful = (bool) XF86MiscGetKbdSettings(properties_disp, &kb_info);
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if (successful) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XF86MiscGetKbdSettings: %i.\n",
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__FUNCTION__, __LINE__, kbdinfo.delay);
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delay = (unsigned int) kbdinfo.delay;
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rate = (unsigned int) kbdinfo.rate;
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}
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}
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#endif
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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if (successful) {
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value = (long int) delay;
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}
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return value;
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}
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IOHOOK_API long int hook_get_pointer_acceleration_multiplier() {
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long int value = -1;
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int accel_numerator, accel_denominator, threshold;
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// Check and make sure we could connect to the x server.
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if (properties_disp != NULL) {
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XGetPointerControl(properties_disp, &accel_numerator, &accel_denominator, &threshold);
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if (accel_denominator >= 0) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XGetPointerControl: %i.\n",
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__FUNCTION__, __LINE__, accel_denominator);
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value = (long int) accel_denominator;
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}
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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return value;
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}
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IOHOOK_API long int hook_get_pointer_acceleration_threshold() {
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long int value = -1;
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int accel_numerator, accel_denominator, threshold;
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// Check and make sure we could connect to the x server.
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if (properties_disp != NULL) {
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XGetPointerControl(properties_disp, &accel_numerator, &accel_denominator, &threshold);
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if (threshold >= 0) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XGetPointerControl: %i.\n",
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__FUNCTION__, __LINE__, threshold);
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value = (long int) threshold;
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}
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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return value;
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}
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IOHOOK_API long int hook_get_pointer_sensitivity() {
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long int value = -1;
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int accel_numerator, accel_denominator, threshold;
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// Check and make sure we could connect to the x server.
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if (properties_disp != NULL) {
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XGetPointerControl(properties_disp, &accel_numerator, &accel_denominator, &threshold);
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if (accel_numerator >= 0) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XGetPointerControl: %i.\n",
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__FUNCTION__, __LINE__, accel_numerator);
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value = (long int) accel_numerator;
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}
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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return value;
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}
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IOHOOK_API long int hook_get_multi_click_time() {
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long int value = 200;
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int click_time;
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bool successful = false;
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#ifdef USE_XT
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// Check and make sure we could connect to the x server.
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if (xt_disp != NULL) {
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// Try and use the Xt extention to get the current multi-click.
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if (!successful) {
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// Fall back to the X Toolkit extension if available and other efforts failed.
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click_time = XtGetMultiClickTime(xt_disp);
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if (click_time >= 0) {
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logger(LOG_LEVEL_INFO, "%s [%u]: XtGetMultiClickTime: %i.\n",
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__FUNCTION__, __LINE__, click_time);
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successful = true;
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}
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}
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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#endif
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// Check and make sure we could connect to the x server.
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if (properties_disp != NULL) {
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// Try and acquire the multi-click time from the user defined X defaults.
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if (!successful) {
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char *xprop = XGetDefault(properties_disp, "*", "multiClickTime");
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if (xprop != NULL && sscanf(xprop, "%4i", &click_time) != EOF) {
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logger(LOG_LEVEL_INFO, "%s [%u]: X default 'multiClickTime' property: %i.\n",
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__FUNCTION__, __LINE__, click_time);
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successful = true;
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}
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}
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if (!successful) {
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char *xprop = XGetDefault(properties_disp, "OpenWindows", "MultiClickTimeout");
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if (xprop != NULL && sscanf(xprop, "%4i", &click_time) != EOF) {
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logger(LOG_LEVEL_INFO, "%s [%u]: X default 'MultiClickTimeout' property: %i.\n",
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__FUNCTION__, __LINE__, click_time);
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successful = true;
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}
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}
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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if (successful) {
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value = (long int) click_time;
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}
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return value;
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}
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// Create a shared object constructor.
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__attribute__ ((constructor))
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void on_library_load() {
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// Make sure we are initialized for threading.
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XInitThreads();
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// Open local display.
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properties_disp = XOpenDisplay(XDisplayName(NULL));
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if (properties_disp == NULL) {
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logger(LOG_LEVEL_ERROR, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay failure!");
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}
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else {
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logger(LOG_LEVEL_DEBUG, "%s [%u]: %s\n",
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__FUNCTION__, __LINE__, "XOpenDisplay success.");
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}
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#ifdef USE_XRANDR
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// Create the thread attribute.
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pthread_attr_t settings_thread_attr;
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pthread_attr_init(&settings_thread_attr);
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pthread_t settings_thread_id;
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if (pthread_create(&settings_thread_id, &settings_thread_attr, settings_thread_proc, NULL) == 0) {
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logger(LOG_LEVEL_DEBUG, "%s [%u]: Successfully created settings thread.\n",
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__FUNCTION__, __LINE__);
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}
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else {
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logger(LOG_LEVEL_ERROR, "%s [%u]: Failed to create settings thread!\n",
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__FUNCTION__, __LINE__);
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}
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// Make sure the thread attribute is removed.
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pthread_attr_destroy(&settings_thread_attr);
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#endif
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#ifdef USE_XT
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XtToolkitInitialize();
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xt_context = XtCreateApplicationContext();
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int argc = 0;
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char ** argv = { NULL };
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xt_disp = XtOpenDisplay(xt_context, NULL, "IOHook", "libIOhook", NULL, 0, &argc, argv);
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#endif
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// Initialize.
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load_input_helper(properties_disp);
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}
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// Create a shared object destructor.
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__attribute__ ((destructor))
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void on_library_unload() {
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// Disable the event hook.
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//hook_stop();
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// Cleanup.
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unload_input_helper();
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#ifdef USE_XT
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XtCloseDisplay(xt_disp);
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XtDestroyApplicationContext(xt_context);
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#endif
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// Destroy the native displays.
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if (properties_disp != NULL) {
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XCloseDisplay(properties_disp);
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properties_disp = NULL;
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}
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}
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