On Tue, 18 Sep 2001, Marcel Hicking wrote:
> I have a script invoked via inetd.
> How can I let the script know of the IP of the client
> connecting (remote IP)?
> I need to do some additional security checks not
> possible with hosts.access|deny
>
> Any hints?
getpeername(2) is the C library function to get the remote IP. This works
for me:
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
int main (int argc, char *argv[])
{
struct sockaddr_in name;
int namelen = sizeof(name);
char *temp_domain;
if (getpeername((int) 1,
(struct sockaddr *) & name, (socklen_t *) & namelen) == 0) {
if ((temp_domain = (char *) inet_ntoa(name.sin_addr)))
printf ("%s", temp_domain);
}
}
Then compile it with "gcc -o getpeername getpeername.c". Then use the
getpeername executable in your script.
Jeremy C. Reed
http://www.reedmedia.net/
http://bsd.reedmedia.net/ -- BSD news and resources
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