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Passing query strings within a query string

Posted on 1998-07-19
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Last Modified: 2013-12-25
/cgibin/redirect.cgi?url=http://www.digitalriver.com/dr/v2/ec_Main.Entry?SP=10007&SID=6370&CID=0

When I run the above script to redirect on link, the query string in the url to be redirected to seems to get cut off at the =. How can I solve this?
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Question by:djschaper
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by:sybe
ID: 1830840
use urlencode to encode the querystring, for example with Javascript escape()
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alamo earned 50 total points
ID: 1830841
When you run a redirect like this, you can't use standard QUERY_STRING processing in your redirect script, because the query string in the redirected url has to be decoded at the final destination, not by you. If you urlencode the querystring your cgi has to decode and then reencode or information will be lost- it's quite tricky, and can easily fail. And it's unnecessary.

The easy way to do it is to change the url to:

/cgibin/redirect.cgi?http://www.digitalriver.com/dr/v2/ec_Main.Entry?SP=10007&SID=6370&CID=0

notice the url= part is gone. Now, in redirect.cgi don't do any QUERY_STRING processing at all, just do the redirect (shown in perl, if you are using something else the idea is the same):

print "Location: $ENV{QUERY_STRING}\n\n";

If you really must have additional fields encoded as part of your redirect url, either place them at the start of the QUERY_STRING and process them specially, or put them into PATH_INFO so they are separate.

Hope this helps!
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