diff --git a/CMakeLists.txt b/CMakeLists.txt index 7fbfc47..2407db2 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -4,5 +4,6 @@ project(tuxedo-touchpad-switch) find_package(PkgConfig REQUIRED) pkg_check_modules(deps REQUIRED IMPORTED_TARGET gio-2.0 udev) + add_executable(tuxedo-touchpad-switch tuxedo-touchpad-switch.cpp) target_link_libraries(tuxedo-touchpad-switch udev PkgConfig::deps) diff --git a/tuxedo-touchpad-switch.cpp b/tuxedo-touchpad-switch.cpp index ea9defd..078dede 100644 --- a/tuxedo-touchpad-switch.cpp +++ b/tuxedo-touchpad-switch.cpp @@ -1,107 +1,124 @@ +// Copyright (c) 2020 TUXEDO Computers GmbH +// +// This file is part of TUXEDO Touchpad Switch. +// +// This file is free software: you can redistribute it and/or modify +// it under the terms of the GNU General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// TUXEDO Touchpad Switch 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 General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with TUXEDO Touchpad Switch. If not, see . + #include -#include -#include #include -#include -#include -#include -#include +#include +#include -#include -#include +#include #include -const char *bus_str(int bus); +#include +#include +#include + +using std::cout; +using std::cerr; +using std::endl; static int get_touchpad_hidraw_devices(std::vector *devnodes) { + int result = -1; + struct udev *udev_context = udev_new(); if (!udev_context) { - perror("udev_new"); - return -1; + cerr << "get_touchpad_hidraw_devices(...): udev_new(...) failed." << endl; + return result; } struct udev_enumerate *hidraw_devices = udev_enumerate_new(udev_context); if (!hidraw_devices) { - perror("udev_enumerate_new"); - udev_unref(udev_context); - return -1; + cerr << "get_touchpad_hidraw_devices(...): udev_enumerate_new(...) failed." << endl; } - - if (udev_enumerate_add_match_subsystem(hidraw_devices, "hidraw") < 0) { - perror("udev_enumerate_add_match_subsystem"); - udev_enumerate_unref(hidraw_devices); - udev_unref(udev_context); - return -1; - } - - if (udev_enumerate_scan_devices(hidraw_devices) < 0) { - perror("udev_enumerate_scan_devices"); - udev_enumerate_unref(hidraw_devices); - udev_unref(udev_context); - return -1; - } - - struct udev_list_entry *hidraw_devices_iterator = udev_enumerate_get_list_entry(hidraw_devices); - if (!hidraw_devices_iterator) { - udev_enumerate_unref(hidraw_devices); - udev_unref(udev_context); - return -1; - } - struct udev_list_entry *hidraw_device_entry; - udev_list_entry_foreach(hidraw_device_entry, hidraw_devices_iterator) { - if (strstr(udev_list_entry_get_name(hidraw_device_entry), "i2c-UNIW0001")) { - struct udev_device *hidraw_device = udev_device_new_from_syspath(udev_context, udev_list_entry_get_name(hidraw_device_entry)); - if (!hidraw_device) { - perror("udev_device_new_from_syspath"); - continue; + else { + if (udev_enumerate_add_match_subsystem(hidraw_devices, "hidraw") < 0) { + cerr << "get_touchpad_hidraw_devices(...): udev_enumerate_add_match_subsystem(...) failed." << endl; + } + else { + if (udev_enumerate_scan_devices(hidraw_devices) < 0) { + cerr << "get_touchpad_hidraw_devices(...): udev_enumerate_scan_devices(...) failed." << endl; + } + else { + struct udev_list_entry *hidraw_devices_iterator = udev_enumerate_get_list_entry(hidraw_devices); + if (!hidraw_devices_iterator) { + cerr << "get_touchpad_hidraw_devices(...): udev_enumerate_get_list_entry(...) failed." << endl; + } + else { + struct udev_list_entry *hidraw_device_entry; + udev_list_entry_foreach(hidraw_device_entry, hidraw_devices_iterator) { + if (strstr(udev_list_entry_get_name(hidraw_device_entry), "i2c-UNIW0001")) { + struct udev_device *hidraw_device = udev_device_new_from_syspath(udev_context, udev_list_entry_get_name(hidraw_device_entry)); + if (!hidraw_device) { + cerr << "get_touchpad_hidraw_devices(...): udev_device_new_from_syspath(...) failed." << endl; + } + else { + std::string devnode = udev_device_get_devnode(hidraw_device); + devnodes->push_back(devnode); + + udev_device_unref(hidraw_device); + } + } + } + result = devnodes->size(); + } } - - std::string devnode = udev_device_get_devnode(hidraw_device); - devnodes->push_back(devnode); - - udev_device_unref(hidraw_device); } + udev_enumerate_unref(hidraw_devices); } - - udev_enumerate_unref(hidraw_devices); udev_unref(udev_context); - return devnodes->size();; + return result; } -void send_events_handler(GSettings *settings, const char* key, gpointer user_data) { +void send_events_handler(GSettings *settings, const char* key, __attribute__((unused)) gpointer user_data) { const gchar *send_events_string = g_settings_get_string(settings, key); if (!send_events_string) { - perror("g_settings_get_string"); + cerr << "send_events_handler(...): g_settings_get_string(...) failed." << endl; return; } std::vector devnodes; int touchpad_count = get_touchpad_hidraw_devices(&devnodes); if (touchpad_count < 0) { - perror("get_touchpad_hidraw_devices"); + cerr << "send_events_handler(...): get_touchpad_hidraw_devices(...) failed." << endl; return; } if (touchpad_count == 0) { - printf("No compatible touchpads found.\n"); + cout << "No compatible touchpads found." << endl; return; } for (auto it = devnodes.begin(); it != devnodes.end(); ++it) { int hidraw = open((*it).c_str(), O_RDWR|O_NONBLOCK); if (hidraw < 0) { - perror("open"); + cerr << "send_events_handler(...): open(\"" << *it << "\", O_RDWR|O_NONBLOCK) failed." << endl; continue; } + // default is to enable touchpad, for this send "0x03" as feature report nr.7 (0x07) to the touchpad hid device char buffer[2] = {0x07, 0x03}; + // change 0x03 to 0x00 to disable touchpad when configuration string starts with [d]isable if (send_events_string[0] == 'd') { buffer[1] = 0x00; } int result = ioctl(hidraw, HIDIOCSFEATURE(sizeof(buffer)/sizeof(buffer[0])), buffer); if (result < 0) { - perror("ioctl"); + cerr << "send_events_handler(...): ioctl(...) on " << *it << " failed." << endl; close(hidraw); continue; } @@ -110,70 +127,37 @@ void send_events_handler(GSettings *settings, const char* key, gpointer user_dat } } -void gracefull_exit(int signum) { - GSettings *settings_touchpad = g_settings_new("org.gnome.desktop.peripherals.touchpad"); - if (!settings_touchpad) { - perror("g_settings_new"); - exit(EXIT_FAILURE); - } +int main() { + // Currently this programm works on desktop environments using Gnome settings only (Gnome/Budgie/Cinnamon/etc.). + // A KDE configuration version will be developt once this works flawless. - std::vector devnodes; - int touchpad_count = get_touchpad_hidraw_devices(&devnodes); - if (touchpad_count < 0) { - perror("get_touchpad_hidraw_devices"); - exit(EXIT_FAILURE); - } - if (touchpad_count == 0) { - printf("No compatible touchpads found.\n"); - exit(EXIT_SUCCESS); - } - - for (auto it = devnodes.begin(); it != devnodes.end(); ++it) { - int hidraw = open((*it).c_str(), O_RDWR|O_NONBLOCK); - if (hidraw < 0) { - perror("open"); - continue; - } - - char buffer[2] = {0x07, 0x03}; - int result = ioctl(hidraw, HIDIOCSFEATURE(sizeof(buffer)/sizeof(buffer[0])), buffer); - if (result < 0) { - perror("ioctl"); - close(hidraw); - continue; - } - - close(hidraw); - } - exit(EXIT_SUCCESS); -} - -int main(int argc, char *argv[]) { - signal(SIGINT, gracefull_exit); - signal(SIGTERM, gracefull_exit); - - GSettings *settings_touchpad = g_settings_new("org.gnome.desktop.peripherals.touchpad"); - if (!settings_touchpad) { - perror("g_settings_new"); + // get a new glib settings context to read the touchpad configuration of the current user + GSettings *touchpad_settings = g_settings_new("org.gnome.desktop.peripherals.touchpad"); + if (!touchpad_settings) { + cerr << "main(...): g_settings_new(...) failed." << endl; return EXIT_FAILURE; } // sync on start - send_events_handler(settings_touchpad, "send-events", NULL); + send_events_handler(touchpad_settings, "send-events", NULL); - if (g_signal_connect(settings_touchpad, "changed::send-events", G_CALLBACK(send_events_handler), NULL) < 1) { - perror("g_signal_connect"); + // sync on config change + if (g_signal_connect(touchpad_settings, "changed::send-events", G_CALLBACK(send_events_handler), NULL) < 1) { + cerr << "main(...): g_signal_connect(...) failed." << endl; return EXIT_FAILURE; } + // TODO sync on xsession change + + // start empty glib mainloop, required for glib signals to be catched GMainLoop *app = g_main_loop_new(NULL, TRUE); if (!app) { - perror("g_main_loop_new"); + cerr << "main(...): g_main_loop_new(...) failed." << endl; return EXIT_FAILURE; } g_main_loop_run(app); // g_main_loop_run should not return - perror("g_main_loop_run"); + cerr << "main(...): g_main_loop_run(...) failed." << endl; return EXIT_FAILURE; }