How to catch 500 error from error logs in apache

A. Enable cgi for your apache. Add following.

1) LoadModule cgid_module modules/mod_cgid.so

2)

<Directory “/appl/apache2/cgi-bin”>

AllowOverride None

Options ExecCGI

Order allow,deny

Allow from all

</Directory>

3)

ScriptAlias /cgi-bin/ “/appl/apache2/cgi-bin/”

AddHandler cgi-script .cgi

ErrorDocument 413 /cgi-bin/error.cgi

4) Restart apache.

B. Set up the following python script to catch this error, send an email to admin and give the custome message to users.

/appl/apche/cgi-bin/error.cgi

chmod +x /appl/apache/cgi-bin/error.cgi

#!/usr/bin/python
import sys, os
SENDMAIL = “/usr/sbin/sendmail” # sendmail location
print “Content-Type: text/htmlnn”;
if (os.environ[“REDIRECT_STATUS”] == “413”) or (os.environ[“REDIRECT_STATUS”] == “500”):
stats = “<table border=1><tr><td>Variable</td><td>Value</td></tr>”
for name, value in os.environ.items():
stats += “<tr><td>%s</td><td>%s</td></tr>” % (name,value)
stats += “</table>”
sendmail_location = “/usr/sbin/sendmail” # sendmail location
p = os.popen(“%s -t” % “/usr/sbin/sendmail”, “w”)
p.write(“From: %sn” % “error-reporter@domain.com”)
p.write(“To: %sn” % “mail@domain.com”)
p.write(“Content-Type: text/htmln”)
p.write(“Subject: Error %s in accessing n” % os.environ[“REDIRECT_STATUS”])
p.write(“n”) # blank line separating headers from body
p.write(stats)
status = p.close()
”’print “<H3><center>Inconvenience Regretted.  Team has been notified of this issue</center></h3>””’
cookieclearjs=”””
<script language=’JavaScript’>
var todate = new Date ( );
todate.setTime ( todate.getTime() – 100000 );
var domain_url_del = window.location.href;
var domain_Name_url_del = domain_url_del.split(“http://”);
var domain_Name_temp_del = domain_Name_url_del[1].split(“/”);
var domain_Name_del = domain_Name_temp_del[0];
var cookieList = document.cookie.split(‘;’);
for(var i=0;i < cookieList.length;i++)
{
var name = cookieList[i];
if(name.indexOf(“MyLinks”)!=-1)
{
document.cookie = ”+name+’=; path=//APPLICATION/PATH; domain=.’ + domain_Name_del + ‘; expires=’ + todate.toGMTString();
document.cookie = ”+name+’=; path=//APPLICATION/PATH; domain=.’ + domain_Name_del + ‘; expires=’ + todate.toGMTString();
}
}
</script>
“””
print cookieclearjs
print “<script language=’JavaScript’>window.location=’%s'</script>” % os.environ[“REDIRECT_SCRIPT_URI”]
else:
print “<H3><center>What you are looking for, is not here</center></h3>”

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