Calendar

Language: C , C++

Program that displays a standard calendar with events. The events can be seen in detail by clicking on a date. The calendar has also the possibility of notifying people who want to about an event with some time before. It has two admin functions: one for adding events and another one for adding users who can add events and calendars.

In order to use this code is required to have the GNU C++ or C installed on you Linux web server. In case you don't have a Linux web server we are sorry but our scripts won't work on your site.

Take the script and modify, if you want, the lines where it says to. The output of the script is inside it so you have to modify directly in the code (and recompile after every modification). At this script the input and the output html sources are inside so you have to modify the source of the script if you want another look (and recompile after each modification because is C, sorry). When you modify the html source keep the 'name' tag of each input or textarea, because else the parameter is not send to the script).

• images - in this directory are the images displayed by the calendar at each month. Is a good idea to change them in the way your page looks. Only thing: keep the names if you want your page to work.
• data - in this directory are the data of each calendar database:
  • <calendar_name>_cal - the place where events are kept
  • <calendar_name>_users - the users who can add data in the calendar and their passwords
  • <calendar_name>_notif - the users who requested to be notified with some days before an event

Before trying to modify this script is a good idea to take a look at what he does because the script source is big and you can't understand from the biggining what happens and where. This script has also parameter recognition, which means that a the parameters are recognized by the name (and you can change their order if you want). If you make a new design of the calendar send us your URL.

The script is formed from 3 programs :

• calendar.c - for viewing the calendar and adding events
• admin.c - for administration tasks as adding a new calendar database and adding a new user who can add new events.
• notify.c - takes care of the notifying part of the script. Must be run once a day, best sometime around 1:00 am. Try to use crontab for this. The line that should be added in the cron is : "30 0 * * * <path>/notify"

The identification of an admin is made by a password, for the big admin (who adds small admins and calendar databases) and by a password and one email for the small admins who can add events in calendars. The passwords used are always crypted so even if somebody gets the password file it won't be able to read it. The crypting algorithm is that of the standard UNIX.

Because the files use the 'crypt' function it is required to compile the files in the following way:
g++ admin.c -o admin.cgi -lcrypt
g++ calendar.c -o calendar.cgi -lcrypt
g++ pass.c -o pass.cgi -lcrypt
g++ notify.c -o notify -lcrypt

To put another password at the big admin you have to first crypt the password with pass.cgi and then copy that string inside admin.c and recompile it.

Last idea: read carefully the comments inside the script.

If you have any questions or any problem with the script, don't hesitate to email us at free@webcab.co.uk. We are always opened to your problems. Also, we guaranty you that we'll always offer you free support.