plan - an X/Motif day planner
=============================

In this README:
-- Compiling plan
-- plan Archives
-- What is plan?
-- Network Security
-- Copyright


Compiling plan
--------------

1. cd src
2. run "./configure"
3. run "make"
4. if you would like to test plan first, run "./plan" in the src directory.
5. install plan and its subprograms and files by running "make install".
6. it is recommended to install netplan where it is started at boot time,
   for example in /etc/rc2.d/S99netplan (SystemV) or /etc/rc.local (BSD).
7. If you use the web frontend, and if you have changed DIR in the Makefile,
   also change the plan path in the web/*.cgi scripts.

For troubleshooting, read misc/plan.help (look for "TROUBLESHOOTING"), or
start plan and choose Help->Troubleshooting.

Linux users: plan also works with LessTif, a free replacement for Motif.
See http://www.hungry.com/products/lesstif/lesstif.html for details and
ftp archives. Also check out http://www.lesstif.org. You need LessTif
0.87.1 or higher (earlier versions may show incomplete file list menu).


plan Archives, homepage, and mailing list
-----------------------------------------

Send bug reports to thomas@bitrot.de. Don't forget to include the version
number as printed by "plan -v". Check out the TROUBLESHOOTING section in
plan.help (or in the Help pulldown if that works), it contains solutions
for common problems.

Information on the current version can be found on plan's home page,
http://www.bitrot.de/plan.html .

The ftp sites for this program are
ftp://ftp.bitrot.de/pub/plan and
ftp://ftp.fu-berlin.de/pub/unix/graphics/plan .


What is plan?
-------------

Plan is a schedule planner based on X/Motif. It displays a month calendar
similar to xcal, but every day box is large enough to show appointments in
small print. By pressing on a day box, the appointments for that day can be
listed and edited. Appointments are entered with the following information
(everything except the time is optional):

- the date, time, and length (time and days) of the appointment,
- an optional text message to be printed,
- an optional script to be executed,
- early-warn and late-warn triggers that precede the alarm time
- repetitions: [n-th] weekdays, days-of-the-month, every n days, yearly
- optional fast command-line appointment entry
- flexible ways to specify holidays and vacations
- extensive context help
- multiuser capability using an IP server program (with access lists),
- grouping of appointments into files, per-user, private, and others

The action being taken when a warn or alarm time is reached is programmable;
by default a window pops up. In addition, a program can be executed, or mail
can be sent. Other methods of listing appointments (today, this week, next
week, or a keyword search for regular expressions) are also available. Plan
can be configured to display times in 12-hour or 24-hour formats, mmddyy and
ddmmyy date formats, and can show either Monday or Sunday in the leftmost
column. Four view modes are supported: month, year, week, day, and a 365-day
overview. The day, week, and overview plot appointments as colored and
labeled bars on a time chart.

You do not need root access to install and run these programs.

This distributions creates four binaries, one directory, and several text
files:

DIR/plan	the schedule program. It displays the calendars and allows
		entry of appointments. It writes everything to .dayplan*
		files in the user's home directory, and other files or to
		the IP server, netplan. It does not check for alarms, this
		is done by the pland daemon. plan can be used without pland
		and notifier, but no alarms will be triggered.

LIB/pland	the daemon that waits for alarm events, and pops up windows,
		sends mail, and/or executes a program when an alarm time is
		reached. It creates a lockfile /tmp/.planUID, with UID being
		the user's user ID. The lockfile prevents multiple pland's.
		It also contains pland's process ID, which is read by plan
		to find out where change notification (HUP) signals should
		be sent. pland should be started in the user's .sgisession
		or .xsession file.

LIB/notifier	a program that prints a file (or standard input) into a
		window. Depending on the options, the window is green, yellow,
		or red. pland uses notifier to display messages; notifier was
		not integrated into pland to keep the pland executable as
		small as possible (X/Motif programs tend to be large).

LIB/netplan     an IP network server that manages appointment files. plan can
		read appointment files directly, but this should be done ONLY
		if files are not shared by multiple users. The netplan server
		runs on a single server host; all plan and pland programs on
		the net can connect to it and read and write appointments.
		You must start netplan manually on the server host. No entry
		in inetd.conf is required, netplan watches a well-known port.

LIB/netplan.dir	the directory that netplan puts files into, and the only
		directory that netplan will read from (see Network Security).

LIB/netplan.dir/.netplan-acl
		access list for netplan that determines which user and system
		has read, write, and delete access to which appointment files.

LIB/plan_cal.ps	the PostScript skeleton for the print functions, should go
		into /usr/local/lib (see LIB in the Makefile)

LIB/plan.help	all default English help texts
LIB/plan.help.L	all help texts for language L
LIB/plan.lang.L	list of all internal messages for language L. L="english" is
		the reference language. See help->languages menu for details.

Plan.icon	for SGI systems. Copy this file to your ~/.icons directory
		to get a full-color icon.
plan.xpm	icon pixmap for non-SGI systems.
Mkdoc		a contributed perl script that converts plan.help to troff
		source.
Killpland	a contributed perl script that can be called from ~/.logout
		to kill pland on logout (also see pland -l/-L options).
Monochrome	a sample resource list for monochrome systems, to be appended
		to ~/.Xdefaults .
netplan.boot	boot script for SGI only. Copy to /etc/init.d and softlink
		to /etc/rc0.d/K39netplan and /etc/rc2.d/S99netplan.

plan and notifier print usage messages when an unknown option is used;
pland has only one option, -k, that kills the existing daemon first if
there is one. In particular, plan -d and notifier -d dump the default X
resources; you can do "plan -d >>.Xdefaults" and modify the resources.
If the EUC code is used for Japanese, a filter is needed at PostScript
printing for conversion to the SJIS code. e.g.:
 nkf -s | lpr -PPSprinter
 euctosj | lpr -PPSprinter (Sun with JLE)

Note -- I do not guarantee the accuracy of the .holiday template files
in the distribution.


Network Security
----------------

Here is information that your system administrator will want to know. IP
services are potential security risks if written improperly. I make no
promises that netplan is completely secure but I made every effort to
avoid the usual pitfalls. netplan is small enough so you can check for
yourself. If you have stringent security policies, do not trust netplan.

Apart from controlling access to appointment files, netplan must satisfy
general security concerns. In particular, it must not be usable to open
network security holes that allow access to files that have nothing to do
with plan. The security features are:

*  if run by root or setuid root, netplan switches to "nobody". The UID and
   GID of <nobody> are compiled in, not determined at runtime. netplan will
   refuse to run setgid-but-not-setuid root.

*  netplan does not execute other programs (this is one of the reasons why
   there are still pland daemons).

*  netplan cannot be used to access files that are not in its home directory,
   /usr/local/lib/netplan.dir by default. Absolute paths are converted to
   paths relative to the home directory.

*  netplan refuses to access softlinks and files that have more than one
   hardlink. This may be inconvenient at times, but without this the user
   who started netplan would be wide open for the entire net.

*  netplan is not sendmail. All buffers are checked for overflows.

*  netplan (as well as the rest of the code) is Purify'd.


Copyright 1
-----------

** Beginning with plan 1.9 you have the choice between two licenses.
** Here is the new one, straight GPL.

This is free software; you can redistribute it and/or modify it under the
terms of the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your option)
any later version. This software is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library
General Public License for more details.


Copyright 2
-----------

** If you choose this copyright, you can distribute plan without including
** its source code. It remains as an option for people who have distributed
** earlier versions of plan, so they can continue to do so without change.
** The warranty exclusion remains in effect in any case.

plan is Copyrighted by Thomas Driemeyer, 1993-2006. License to copy, publish,
and distribute is granted to everyone provided that three conditions are met:

- my name and email address, "Thomas Driemeyer <thomas@bitrot.de>" must
  remain in the distribution and any documentation that was not part of
  this distribution. In particular, my name and address must be shown in
  the About popup.
- if you redistribute a modified version, the fact that the version is
  modified must be stated in all places that my name is shown.
- this copyright notice must be included in your distribution.

If these conditions are met, you can do whatever you like. The idea is that
I would be pissed if someone else claimed he wrote the thing, and I don't
want bugs introduced by others attributed to me. Make as much money with it
as you can. Drop me a line, I am curious.

There are no implied or expressed warranties for plan. I do not claim it is
good for anything whatsoever, and if you lose your precious data or your dog
dies this is entirely your problem.