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Htaccess redirect depending on referrer?
Hello all,
Could someone please tell me what I need in an htaccess file to do the following:
On an Apache server, I have sub-folder-A :
www.mydomain.com/folder/sub-folder-A
in which there are a bunch of PDF files
www.mydomain.com/folder/sub-folder-A/pdf_1.pdf
www.mydomain.com/folder/sub-folder-A/pdf_2.pdf
..etc..
and an index shtml page that provides links to all the pdf files.
www.mydomain.com/folder/sub-folder-A/index.shtml
I want to restrict access and redirect so that acessing any file in sub-folder-A from any link on any page of mydomain.com, (including the links on www.mydomain.com/folder/sub-folder-A/index.shtml), causes a redirect to
www.myotherdomain.com/cgi-bin/myscript.pl
myscript.pl will do some logging, record the url that was requested, then redirect the user back to the requested url (so accessing the file from myscript.pl must NOT result in a redirect)
Trying to access any file in sub-folder-A by any other route defaults to "Forbidden".
Thanks.
Could someone please tell me what I need in an htaccess file to do the following:
On an Apache server, I have sub-folder-A :
www.mydomain.com/folder/sub-folder-A
in which there are a bunch of PDF files
www.mydomain.com/folder/sub-folder-A/pdf_1.pdf
www.mydomain.com/folder/sub-folder-A/pdf_2.pdf
..etc..
and an index shtml page that provides links to all the pdf files.
www.mydomain.com/folder/sub-folder-A/index.shtml
I want to restrict access and redirect so that acessing any file in sub-folder-A from any link on any page of mydomain.com, (including the links on www.mydomain.com/folder/sub-folder-A/index.shtml), causes a redirect to
www.myotherdomain.com/cgi-bin/myscript.pl
myscript.pl will do some logging, record the url that was requested, then redirect the user back to the requested url (so accessing the file from myscript.pl must NOT result in a redirect)
Trying to access any file in sub-folder-A by any other route defaults to "Forbidden".
Thanks.
Apache Web Server
Last Comment
caterham_www
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ASKER
Caterham,
That certainly is succinct, thanks.
To summarize my understanding:
IF (HTTP_REFERER is not equal to http://www.myotherdomain.com/cgi-bin/myscript.pl) THEN
redirect to http://www.myotherdomain.com/cgi-bin/myscript.pl
I'm unclear on what the \.pdf$ is for, though.
Reminder in case it's significant - the same thing applies to the shtml index page in that folder.
Thanks.
That certainly is succinct, thanks.
To summarize my understanding:
IF (HTTP_REFERER is not equal to http://www.myotherdomain.com/cgi-bin/myscript.pl) THEN
redirect to http://www.myotherdomain.com/cgi-bin/myscript.pl
I'm unclear on what the \.pdf$ is for, though.
Reminder in case it's significant - the same thing applies to the shtml index page in that folder.
Thanks.
> IF (HTTP_REFERER is not equal to http://www.myotherdomain.com/cgi-bin/myscript.pl) THEN
redirect to http://www.myotherdomain.com/cgi-bin/myscript.pl
> I'm unclear on what the \.pdf$ is for, though.
I guessed requests for the html page /folder/sub-folder-A/index
> Reminder in case it's significant - the same thing applies to the shtml index page in that folder.
So the index page should be served only with a referer from http://www.myotherdomain.com/cgi-bin/myscript.pl, too? In that case substitute \.pdf$ with ^
redirect to http://www.myotherdomain.com/cgi-bin/myscript.pl
> I'm unclear on what the \.pdf$ is for, though.
I guessed requests for the html page /folder/sub-folder-A/index
> Reminder in case it's significant - the same thing applies to the shtml index page in that folder.
So the index page should be served only with a referer from http://www.myotherdomain.com/cgi-bin/myscript.pl, too? In that case substitute \.pdf$ with ^
ASKER
>> So the index page should be served only with a referer from http://www.myotherdomain.com/cgi-bin/myscript.pl, too? In that case substitute \.pdf$ with ^
Yes, that's right. Any access of any file, including the shtml index file, redirects to the Perl script. So, OK, I replace \.pdf$ with ^ - what's it do?
Yes, that's right. Any access of any file, including the shtml index file, redirects to the Perl script. So, OK, I replace \.pdf$ with ^ - what's it do?
^ matches each request
ASKER
OK, thanks - points awarded.
But if you have a minute, I'm sorry but I'm still not entirely clear on "matches each request" - I mean, we did our matching in the RewriteCond line, where we said "if the referer is not X". What more matching is needed?
Thanks again.
But if you have a minute, I'm sorry but I'm still not entirely clear on "matches each request" - I mean, we did our matching in the RewriteCond line, where we said "if the referer is not X". What more matching is needed?
Thanks again.
ASKER
No, wait, I think I get it - the RewriteRule is a search-and-replace regex.
Replace ^ with X
Where ^ matches the entire requested uri.
Yes?
Replace ^ with X
Where ^ matches the entire requested uri.
Yes?
> Where ^ matches the entire requested uri.
Yes, in your subfolder the string index.shtml or foo.pdf would be matched (everything left from th path is striped since you're in /some/folder-A/).
Yes, in your subfolder the string index.shtml or foo.pdf would be matched (everything left from th path is striped since you're in /some/folder-A/).
Example...
RewriteEngine on
RewriteCond %{REQUEST_URI} ^http://www\.mydomain\.com/folder/sub-folder-A/ [NC]
RewriteMap log prg:/path/to/cgi-script/my
RewriteRule ^.*$ /denied.html [F]