src/key_tracker.c


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// key tracker

#include <linux/input.h>
#include <sys/time.h>
#include <stdlib.h>

#include "report.h"
#include "common.h"

keypresses_t keypresses;

extern FILE* report_fp;

void log_key(int key) {
	struct timeval press_time;
	keypress_t keypress;

	gettimeofday(&press_time, NULL);

	keypress.when = press_time.tv_sec + (press_time.tv_usec / 1000000.0);
	keypress.what = key;

	if (keypresses.keys == NULL) {
		keypresses.keys = calloc(KEYPRESSES_START_SIZE, sizeof(keypress_t));
		keypresses.length = 0;
		keypresses.size = KEYPRESSES_START_SIZE;
	}

	if (keypresses.length >= keypresses.size) {
		keypresses.keys = reallocarray(keypresses.keys, keypresses.size + KEYPRESSES_ADDITIONAL_SIZE, sizeof(keypress_t));
		keypresses.size += KEYPRESSES_ADDITIONAL_SIZE;

		gen_report(report_fp);
	}

	keypresses.keys[keypresses.length++] = keypress;

	if (key == KEY_ENTER) {
		gen_report(report_fp);
	}
}