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Redirect ie4/net40 and the rest

Posted on 1998-10-31
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Last Modified: 2010-03-04
Hello,

I need a perl script that redirects:

When I use net40 or higher.
When I use ie40 or higher.
When I use an other then above.

I tryed the following script. It works fine but it won't detect ie40 or higher and will redirect instead of that to the netscape site. Is this because netscape and IE40 use both the mozilla description. How do I solve this problem.

#!/usr/local/bin/perl5/

$base_html_page = "http://www.dracotools.com/test/testrest.html";
$net40_html_page = "http://www.dracotools.com/test/testnet.html";
$ie40_html_page = "http://www.dracotools.com/test/testie.html";

##############################################################
# Nothing below this line needs changing - but, feel free.....
##############################################################

read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
@user_agent =  split(/\//,$ENV{'HTTP_USER_AGENT'});
@version = split(/ /, $user_agent[1]);
$version_number = substr($version[0], 0, 3);

# Microsoft redirection subroutine
if ($user_agent[0] eq "Microsoft"){
    if ($version_number < 4.0) {    #### this is the version use X.X if you change it
      print "Location: $base_html_page\n\n";
    }
    else {
      print "Location: $ie40_html_page\n\n";
    }
}

# Netscape redirection subroutine
elsif ($user_agent[0] eq "Mozilla"){
    if ($version_number < 4.0) {    #### this is the version use X.X if you change it
      print "Location: $base_html_page\n\n";
    }
    else {
      print "Location: $net40_html_page\n\n";
    }
}

# All other Browsers are redirected here
else {
    print "Location: $base_html_page\n\n";
}

greeting Michel Weegerink
mmcw@worldonline.nl
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Question by:mmcw
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3 Comments
 
LVL 5

Expert Comment

by:Christian_Wenz
ID: 1205839
afaik IE has a "compatible" in the HTTP_USER_AGENT. Could that be?
0
 
LVL 85

Expert Comment

by:ozo
ID: 1205840
Could you show what you're getting in HTTP_USER_AGENT in each case?
0
 
LVL 5

Accepted Solution

by:
Christian_Wenz earned 150 total points
ID: 1205841
at

http://www2.nerv.ne.jp/~mina/userlog2/agent.cgi

(and on many other places) you can find a list of http_user_agents. One example for a MSIE4 is this:

Mozilla/4.0 (compatible; MSIE 4.01; MSIECrawler; Windows 95)

so: change:

if ($user_agent[0] eq "Microsoft"){

to
  if ($ENV{'HTTP_USER_AGENT'} =~ /compatible/) {

and your script should work.
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