[763] in Zephyr_Bugs
Re: Zephyr 2.0.2 little endian unauthentic Zephyrs
daemon@ATHENA.MIT.EDU (ghudson@MIT.EDU)
Sun Mar 24 18:21:18 1996
From: ghudson@MIT.EDU
Date: Sun, 24 Mar 1996 18:21:15 -0500
To: garvin@eos.ncsu.edu
Cc: bug-zephyr@MIT.EDU, garvin@eos.ncsu.edu
In-Reply-To: "[758] in Zephyr_Bugs"
> I've poked around but can't seem to track the problem down. Under
> 2.0.2 little endian (i386 Linux, MIPS DEC Ultrix, Alpha AXP OSF
> 3.2a) machines' Zephyrs are being sent unauthentic. Zephyrs coming
> from big endian machines are received correctly (authentic). I've
> looked at the checksums being calculated in ZCkAuth versus what's
> being received in the packet, and they don't match (duh). Help?
There's an extra byte swap in ZMakeAuthentication(). Try the
following patch:
*** lib/zephyr/ZMkAuth.c~ Thu Mar 21 08:19:23 1996
--- lib/zephyr/ZMkAuth.c Thu Mar 21 08:19:42 1996
***************
*** 90,96 ****
checksum ^= des_quad_cksum(notice->z_message, NULL, notice->z_message_len,
0, cred.session);
notice->z_checksum = checksum;
! checksum = htonl(checksum);
ZMakeAscii32(cstart, buffer + buffer_len - cstart, checksum);
return (ZERR_NONE);
--- 90,96 ----
checksum ^= des_quad_cksum(notice->z_message, NULL, notice->z_message_len,
0, cred.session);
notice->z_checksum = checksum;
! /* checksum = htonl(checksum);*/
ZMakeAscii32(cstart, buffer + buffer_len - cstart, checksum);
return (ZERR_NONE);
---
