Strange getservbyname behaviour

["Tuninetto, Paolo" <Paolo dot Tuninetto at hp dot com>]

Hi, I was trying to compile the ftpd from GNU inteutils and I found that when I try to run ftpd -D (daemon mode) it opens a connection on the 5376 port instead of the default 21.

Looking at the rource and it seems that there is a problem with the getservbyname function call that ftpd is using.

This is a simple test program. Afaik it should reply with PORT: 21 but the reply I get is PORT: 5376 (5376 = 21*256)
I get the same strange behaviour using any other servise/protocol (defined in my /etc/services) and also using the getservbyport function...

#include <stdio.h>
#include <netdb.h>

int main() {
  struct servent *s;
  s = getservbyname("ftp","tcp");
  if (s == NULL)
    printf("NULL!\n");
  else
    printf("PORT: %d\n", s->s_port);
}

Thanks in advance,
	Paolo