18 James Source Code

The programs available here have proved useful at 18 James on Sparc-Solaris and MacOSX workstations. These utilities should run on most Unix systems, and many will run on PCs as well.

UPS monitor

pf.c is a powerfail daemon that monitors a UPS for a signal that the power has failed, and after a specified interval initiates an orderly shutdown of the system attached to the UPS. The code was written for an American Power Conversion Back-UPS 600, but should work with any UPS that uses an RS-232 signal to indicate imminent battery exhaustion. There is a man page, and a postscript version of the man page for sites without groff or troff. Pf can be compiled to use the Solaris power management package and the suspend/resume option for the sun4m and sun4u architectures, or to initiate an orderly system shutdown.

worm protection

The Earlybird gets the worm! Apache::Earlybird is a mod_perl module for Apache WWW servers that traps probes from remote IIS servers infected by the CodeRed or Nimda worms. The module returns a 403 Forbidden notice to the attacker without cluttering the local error log, and emails notifications of the infection attempt to a security tracking authority and to the ISP of the infected machine. Earlybird finds appropriate email notification addresses even for sites with unresolvable ip-addresses, and maintains a cache so notifications are sent for each attacking site only once every 24-hours. Requires an Apache WWW server compiled with mod_perl and a number of perl packages available from CPAN. The tarball includes a README and a perl Makefile.PL that checks dependencies on the system before installing the module.

mrtg

delay.pl is a perl script for use with MRTG (Multi Router Traffic Grapher) to monitor and graph network delays. Requires a working NTP installation. For documentation, do perldoc delay.pl.

ipf.pl is a perl script for use with the ip-filter firewall and NAT router to monitor inbound/outbound packets passed through the firewall, packets blocked at the firewall, NAT activity, the NAT & ip state tables, and total traffic through the firewall for MRTG graphs. For documentation, do perldoc ipf.pl.

yiddish

yiddish is a Unix shell script that displays YIVO-transliterated Yiddish in a choice of Hebrew fonts on an X-Windows display, and/or prints the Yiddish on a postscript printer. The script requires LaTeX, and a superb package of LaTeX macros from Raphael Finkel.

envelope

Envelope formats and prints envelopes on a Postscript printer. Can be used from the command line or from inside editors like emacs, vi, or LyX; parses addresses from troff, LaTeX, and LyX source. For documentation, do perldoc envelope.