120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
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#include <fcntl.h>
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#include <linux/input.h>
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#include <linux/uinput.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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void simulate_key(int fd, int kval) {
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struct input_event event;
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int ret;
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struct timeval tv;
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gettimeofday(&tv, NULL);
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event.input_event_sec = tv.tv_sec;
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event.input_event_usec = tv.tv_usec;
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// gettimeofday(&event.time, 0);
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event.type = EV_KEY;
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event.code = kval;
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event.value = 1;
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ret = write(fd, &event, sizeof(event));
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event.type = EV_SYN;
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event.code = SYN_REPORT;
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event.value = 0;
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ret = write(fd, &event, sizeof(event));
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memset(&event, 0, sizeof(event));
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// gettimeofday(&event.time, NULL);
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memset(&tv, 0, sizeof(tv));
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gettimeofday(&tv, NULL);
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event.input_event_sec = tv.tv_sec;
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event.input_event_usec = tv.tv_usec;
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event.type = EV_KEY;
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event.code = kval;
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event.value = 0;
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ret = write(fd, &event, sizeof(event));
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event.type = EV_SYN;
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event.code = SYN_REPORT;
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event.value = 0;
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ret = write(fd, &event, sizeof(event));
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}
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int main(int argc, char *argv[]) {
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unsigned int keycode;
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int fd_kbd;
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char eventname[32] = {0};
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FILE *fp;
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const char *deviceInfo = "/proc/bus/input/devices";
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char *p;
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char *buf = 0;
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size_t readLen = 0;
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unsigned char foundDev = 0;
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if (argc != 2) {
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printf("Usage: simulate_key keycode\n");
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return -1;
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}
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fp = fopen(deviceInfo, "r");
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if (fp == NULL) {
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printf("error to open input devices info\n");
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return -1;
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}
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while ((readLen = getline(&buf, &readLen, fp)) != -1) {
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if (buf) {
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if (!foundDev) {
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p = strstr(buf, "N: Name=\"ir_keypad\"");
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if (p == NULL) {
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p = strstr(buf, "N: Name=\"ir_keypad0_0\"");
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}
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if (p != NULL) {
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foundDev = 1;
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}
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} else {
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p = strstr(buf, "H: Handlers=");
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if (p != NULL) {
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p = strstr(buf, "event");
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char event[8];
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sscanf(p, "%s", event);
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sprintf(eventname, "/dev/input/%s", event);
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break;
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}
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}
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}
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}
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if (buf) {
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free(buf);
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buf = NULL;
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}
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fclose(fp);
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if (!foundDev) {
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printf("no input device found\n");
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return -1;
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}
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fd_kbd = open(eventname, O_RDWR);
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if (fd_kbd <= 0) {
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printf("error open keyboard %s\n", eventname);
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return -1;
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}
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keycode = strtoul(argv[1], NULL, 0);
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printf("send simulate event %s keycode: %d (0x%x)!\n", eventname, keycode,
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keycode);
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simulate_key(fd_kbd, keycode);
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close(fd_kbd);
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}
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