env/utils/httpd/ip.c

32 lines
752 B
C

/*
* httpd-utils
* Written in 2020 by Lucas
* CC0 1.0 Universal/Public domain - No rights reserved
*
* To the extent possible under law, the author(s) have dedicated all
* copyright and related and neighboring rights to this software to the
* public domain worldwide. This software is distributed without any
* warranty. You should have received a copy of the CC0 Public Domain
* Dedication along with this software. If not, see
* <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#include <stdio.h>
#include <stdlib.h>
int
main(void)
{
char *ip;
ip = getenv("HTTP_X_FORWARDED_FOR");
if (ip == NULL)
ip = getenv("REMOTE_ADDR");
if (ip == NULL)
ip = "unknown";
printf("Content-type: text/plain\n\n%s\n", ip);
return 0;
}