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The Problem
After following the Coranto install instructions and then accessing coranto.cgi for the first time using h**p://www.yoursite.net/pathto/coranto.cgi you are greeted with a blank screen. Upon viewing the source code for the blank page you see:
<html><head><title>Coranto: Fatal Error</title>
There are two common causes for this problem.
- wrong path info
- flock problem
If this has started on an existing and previously working Coranto install it is very likely that your hosting company has made changes on the server.
- moved your site to a different server
- moved your site's physical location on the server
- changed a policy (now confining cgi scripts to the cgi-bin when they previously didn't)
If Coranto just stopped working check for changes with your host.
Path Settings
One possible culprit in this case is improper path information. Coranto usually does a good job of detecting the proper path information. If it doesn't you may have to specify the path in the coranto.cgi file. Open the file in a text editor and find this section:
# EXTRA SERVER INFORMATION # Coranto tries to determine its path and URL automatically. This works in 90% # of cases, but some servers aren't cooperative and don't allow this information # to be found automatically. Though it won't hurt, there's no need to fill this out # unless you encounter problems. # # If you encounter problems (particularly with incorrect URLs, or fatal error messages # about files not being found), fill in the two variables below. $abspath = ''; # Set the above to the absolute path to Coranto's directory, without # a trailing slash. Example: # $abspath = '/absolute/path/to/coranto'; $scripturl = ''; # Set the above to the URL to coranto.cgi. Example: # $scripturl = 'http://www.myserver.com/coranto/coranto.cgi'; # END EXTRA SERVER INFORMATION
Remove the # at the start of the $abspath line and the $scripturl line and enter the correct information for your server. $abspath is the path from the root of your webserver and the $scripturl is the URL you would enter in your browser to access the script.
Save the file and upload to your server.
Use php to discover absolute path
<?php echo $_SERVER['DOCUMENT_ROOT']; ?>
Save the above code as path.php upload to the directory you want the absolute path for call in your browser h**p://yoursite.net/somedir/somedir/path.php
Use perl to discover your absolute path
#!/usr/bin/perl
print "Content-type: text/html\n\n";
print "<html>\n" ;
print "<body>\n";
print "Perl version: $]<br>\n";
print "Absolute path: $ENV{'SCRIPT_FILENAME'}<br>\n";
print "</body>\n";
print "</html>\n";
Save as path.cgi (using unix/linux line endings) upload to the directory you want the info for chmod to 755 call in your browser h**p://yoursite.net/somedir/somedir/path.cgi
- The path to perl line (the first line) in any perl script can not be indented. It must be all the way to the left.
- perl scripts running on unix/linux servers usually require that the line endings be unix
FLOCK
If your server does not support FLOCK you will need to turn it off. This happens more frequently on a Windows server. To disable FLOCK you must open the file cruser.pl and edit one of the settings available there. Here is the section you are looking for:
# ** FILE LOCKING ** # File locking is a feature, provided by the operating system, which # prevents possible serious problems when Coranto is being used by # multiple users. Almost every operating system supports this, except # for Windows 9x/ME. Possible settings: # 2 Enable file locking. If you know your server supports it, set # UseFlock to this. # 0 Disable file locking. This may result in file corruption. $UseFlock = 2;
Change the 2 to a 0 (zero).
If you have previously used Coranto on the same server and did not have to change the setting for FLOCK then you probably need to set the path information.