Ethereal-dev: Re: [ethereal-dev] Re: Ethereal Contribution + patches

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date Index Thread Index Other Months All Mailing Lists
Date Prev Date Next Thread Prev Thread Next
From: gram@xxxxxxxxxxxxxxxxxxx (Gilbert Ramirez Jr.)
Date: Mon, 31 Aug 1998 16:54:55 -0500 (CDT)
As Gerald Combs - Unicom Communications said:
> 
>   A while ago, Gilbert added pntohs() and pntohl() macros to packet.h. 
> You pass them a byte pointer, and they return the short and long ints at
> that pointer.  I expanded them this weekend to fix some Solaris alignment
> issues.  They may be able to help you with your Alpha effort as long as I
> didn't break them. 

I don't think you messed them up; I think I might have put them in
incorrectly. The following program shows that the big-endian/little-endian
test in packet.h is backwards.

#include <pcap.h>
#include <gtk/gtk.h>
#include <stdio.h>
#include "packet.h"

int main(void) {

    unsigned short int  ishort;

    ishort = htons(7777);

    printf("pntohs shows %d, ntohs shows %d\n",
        pntohs((guint8*)&ishort), ntohs(ishort));

    return 0;
}  

--gilbert
-- 
Gilbert Ramirez                Voice:  +1 210 358 4032
Technical Services             Fax:    +1 210 358 1122
University Health System       San Antonio, Texas, USA