07-11-2014
If you can't get the first applicaiton to manipulate a lockfile or otherwise signal your script, you can use incron (a cron like utility for file system events) to signal your second script that it is safe to read.
I use incron to detect the close file event for any file in my public ftp submission directory and as soon as it is done being uploaded, incron launches a script that yanks it away to a non-public directory so that every individual's uploads are private to other users whithout giving everyone a different area.
I also have a web interface to reboot my server, turn on and off anonymous FTP, share or not share my media directories (on/off or for a timeout period), etc. I know very little CGI, so instead of handling it in CGI, I save the state of the user radio button clicks and password hash to a text file and use Incron to detect a change and launch a shell script which parses and interperates it. I did it out of ignorance of CGI but I believe it is very secure.
Mike
This User Gave Thanks to Michael Stora For This Post:
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LEARN ABOUT DEBIAN
appconfig::cgi
AppConfig::CGI(3pm) User Contributed Perl Documentation AppConfig::CGI(3pm)
NAME
AppConfig::CGI - Perl5 module for processing CGI script parameters.
SYNOPSIS
use AppConfig::CGI;
my $state = AppConfig::State->new(\%cfg);
my $cgi = AppConfig::CGI->new($state);
$cgi->parse($cgi_query);
$cgi->parse(); # looks for CGI query in environment
OVERVIEW
AppConfig::CGI is a Perl5 module which implements a CGI interface to AppConfig. It examines the QUERY_STRING environment variable, or a
string passed explicitly by parameter, which represents the additional parameters passed to a CGI query. This is then used to update
variable values in an AppConfig::State object accordingly.
AppConfig::CGI is distributed as part of the AppConfig bundle.
DESCRIPTION
USING THE AppConfig::CGI MODULE
To import and use the AppConfig::CGI module the following line should appear in your Perl script:
use AppConfig::CGI;
AppConfig::CGI is used automatically if you use the AppConfig module and create an AppConfig::CGI object through the cgi() method.
AppConfig::CGI is implemented using object-oriented methods. A new AppConfig::CGI object is created and initialised using the new()
method. This returns a reference to a new AppConfig::CGI object. A reference to an AppConfig::State object should be passed in as the
first parameter:
my $state = AppConfig::State->new();
my $cgi = AppConfig::CGI->new($state);
This will create and return a reference to a new AppConfig::CGI object.
PARSING CGI QUERIES
The "parse()" method is used to parse a CGI query which can be specified explicitly, or is automatically extracted from the "QUERY_STRING"
CGI environment variable. This currently limits the module to only supporting the GET method.
See AppConfig for information about using the AppConfig::CGI module via the cgi() method.
AUTHOR
Andy Wardley, "<abw@wardley.org<gt">
COPYRIGHT
Copyright (C) 1997-2007 Andy Wardley. All Rights Reserved.
Copyright (C) 1997,1998 Canon Research Centre Europe Ltd.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
AppConfig, AppConfig::State
perl v5.12.4 2007-05-30 AppConfig::CGI(3pm)