/* 
 * Compile commandline: cc -static -g -W -Wall -Wextra -Os -o ip cgi_ip.c
 * Source code: https://04d.co/dl/software/cgi_ip.c
 * License: public domain
 */

#include <err.h> /* err(3) */
#include <stdlib.h> /* EXIT_xxxx */
#include <stdio.h> /* puts(3) */
#include <unistd.h> /* pledge(2) */

int main(void)
{
	if(pledge("stdio", NULL) == -1) 
		err(EXIT_FAILURE, "pledge");

	char * forwardedFor = getenv("HTTP_X_FORWARDED_FOR");
	puts("Status: 200 OK\r");
	puts("Content-Type: text/plain\r");
	puts("\r");
	printf("%s\n", forwardedFor);
	return EXIT_SUCCESS;
}