CODEWITHSUNDEEP
apache.htaccess
Samul
Samul

Reputation: 2019

Check if header is present in request with apache

How can I check if a header exist. I dont want to check if the value is different of "" I want to check if it really exist using:

RewriteCond

How can I do that inside htaccess file?

Upvotes: 6

Views: 23928

Answers (3)

user10529400
user10529400

Reputation: 111

@anhubhava's answer was useful but logic inverted! it should be:

RewriteEngine On

# block if request header X-SomeHeader doesn't exist
RewriteCond %{HTTP:X-SomeHeader} ^$
RewriteRule ^ - [F]

or for an opposite example:

RewriteEngine On

# redirect foo to bar if request header X-SomeHeader exists
RewriteCond %{HTTP:X-SomeHeader} !^$
RewriteRule ^foo$ bar [L]

Upvotes: 11

Omen
Omen

Reputation: 1

Try this way 

RewriteEngine On

# block if request header X-SomeHeader doesn't exist
RewriteCond %{HTTP:TID} ^.+$
RewriteRule ^ - [L]

RewriteRule ^ - [F]

Upvotes: 0

anubhava
anubhava

Reputation: 785276

You can use a condition like this to know if a header X-SomeHeader exists or not:

RewriteEngine On

# block if request header X-SomeHeader doesn't exist
RewriteCond %{HTTP:X-SomeHeader} !^$
RewriteRule ^ - [F]

Upvotes: 3

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