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115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/*
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KindlePDFViewer: power slider key event watcher
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Copyright (C) 2012 Qingping Hou <dave2008713@gamil.com>
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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 General Public License as published by
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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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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "popen-noshell/popen_noshell.h"
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#include <err.h>
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#include <stdio.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <linux/input.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <sys/wait.h>
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#define CODE_IN_SAVER 10000
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#define CODE_OUT_SAVER 10001
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int
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main ( int argc, char *argv[] )
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{
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int fd;
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FILE *fp;
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char std_out[256];
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int status;
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struct popen_noshell_pass_to_pclose pclose_arg;
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struct input_event ev;
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__u16 key_code = 10000;
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/* create the npipe if not exists */
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/*if(access(argv[1], F_OK)){*/
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/*printf("npipe %s not found, try to create it...\n", argv[1]);*/
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/*if(mkfifo(argv[1], 0777)) {*/
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/*printf("Create npipe %s failed!\n", argv[1]);*/
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/*}*/
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/*}*/
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/* open npipe for writing */
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fd = open(argv[1], O_RDWR | O_NONBLOCK);
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if(fd < 0) {
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printf("Open %s failed: %s\n", argv[1], strerror(errno));
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exit(EXIT_FAILURE);
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}
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/* initialize event struct */
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ev.type = EV_KEY;
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ev.code = key_code;
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ev.value = 1;
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/* listen power slider events */
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char *argv[] = {"lipc-wait-event", "-m", "-s", "0", "com.lab126.powerd", "goingToScreenSaver,outOfScreenSaver", (char *) NULL};
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fp = popen_noshell("lipc-wait-event", (const char * const *)chargv, "r", &pclose_arg, 0);
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if (!fp) {
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err(EXIT_FAILURE, "popen_noshell()");
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}
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while(fgets(std_out, sizeof(std_out)-1, fp)) {
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/* printf("Got line: %s", std_out); */
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if(std_out[0] == 'g') {
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ev.code = CODE_IN_SAVER;
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} else if(std_out[0] == 'o') {
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ev.code = CODE_OUT_SAVER;
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} else {
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printf("Unrecognized event.\n");
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exit(EXIT_FAILURE);
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}
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/* fill event struct */
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gettimeofday(&ev.time, NULL);
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/* printf("Send event %d\n", ev.code); */
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/* generate event */
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if(write(fd, &ev, sizeof(struct input_event)) == -1) {
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printf("Failed to generate event.\n");
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}
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}
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status = pclose_noshell(&pclose_arg);
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if (status == -1) {
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err(EXIT_FAILURE, "pclose_noshell()");
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} else {
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printf("Power slider event listener child exited with status %d.\n", status);
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if WIFEXITED(status) {
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printf("Child exited normally with status: %d.\n", WEXITSTATUS(status));
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}
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if WIFSIGNALED(status) {
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printf("Child terminated by signal: %d.\n", WTERMSIG(status));
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}
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}
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close(fd);
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return EXIT_SUCCESS;
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}
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