handle multiple domains with Access-Control-Allow-Origin header in Apache - apache

Question

I want to configure apache for cross-domain access header. I have tried multiple combination as suggested on number of threads on the forum. But its not working for me.
The ways, I have tried:
1) Specify domain on different line as below with Header set :
Header set Access-Control-Allow-Origin "example1.com"
Header set Access-Control-Allow-Origin "example2.com"
Header set Access-Control-Allow-Origin: "example3.com"
With this setup its picking only last one and ignore rest of all.
2) Specify domain on different line as below with Header add :
Header add Access-Control-Allow-Origin "example1.com"
Header add Access-Control-Allow-Origin "example2.com"
Header add Access-Control-Allow-Origin: "example3.com"
With this its showing all three domains in header, but fonts are not getting picked up on Firefox.
3.) Tried Using SetEnvIf, but again its not working :
SetEnvIf Origin "http(s)?://(www\.)?(mydomain.com|mydomain2.com)$" AccessControlAllowOrigin=$0$1
Header add Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Finally working with "*", but I don't want to use this.
Please help with this.

Answer 1

For 3 domains, in your .htaccess:
<IfModule mod_headers.c>
SetEnvIf Origin "http(s)?://(www\.)?(domain1.org|domain2.com|domain3.net)$" AccessControlAllowOrigin=$0$1
Header add Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Header set Access-Control-Allow-Credentials true
</IfModule>
I've tried this and it works for me. Let me know if it doesn't for you.

Answer 2

Unless I'm misunderstanding the manual, it should be:
Header always append Access-Control-Allow-Origin: "example1.com"
Header always append Access-Control-Allow-Origin: "example2.com"
Header always append Access-Control-Allow-Origin: "example3.com"
The manual states that the set and add actions behave in the following way:
set: "The response header is set, replacing any previous header with this name"
add: "...This can result in two (or more) headers having the same name. This can lead to unforeseen consequences..."

Answer 3

To restrict access to certain URIs checkout these docs:
CrossOriginRequestSecurity
Server-Side Access Control#Apache_examples
One helpful trick is to use an Apache rewrite, environment variable, and headers to apply Access-Control-Allow-* to certain URIs. This is useful, for example, to constrain cross-origin requests to GET /api(.*).json requests without credentials:
RewriteRule ^/api(.*)\.json$ /api$1.json [CORS=True]
Header set Access-Control-Allow-Origin "*" env=CORS
Header set Access-Control-Allow-Methods "GET" env=CORS
Header set Access-Control-Allow-Credentials "false" env=CORS
Also, in general, according to W3 Wiki - CORS Enabled#For_Apache
To expose the header, you can add the following line inside Directory, Location, and Files sections, or within an .htaccess file.
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin "*"
</IfModule>
AND, you can use add rather than set, but be aware that add can add the header multiple times, so it's generally safer to use set.

Answer 4

Try this one, it works for me.
Apply in .htaccess:
SetEnvIf Origin "^http(s)?://(.+\.)?(domain\.org|domain2\.com)$" origin_is=$0
Header always set Access-Control-Allow-Origin %{origin_is}e env=origin_is

Answer 5

Will be work 100%, Apply in .htaccess:
# Enable cross domain access control
SetEnvIf Origin "^http(s)?://(.+\.)?(domain1\.com|domain2\.org|domain3\.net)$" REQUEST_ORIGIN=$0
Header always set Access-Control-Allow-Origin %{REQUEST_ORIGIN}e env=REQUEST_ORIGIN
Header always set Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS"
Header always set Access-Control-Allow-Headers "x-test-header, Origin, X-Requested-With, Content-Type, Accept"
# Force to request 200 for options
RewriteEngine On
RewriteCond %{REQUEST_METHOD} OPTIONS
RewriteRule .* / [R=200,L]

Answer 6

For Apache 2.4, I have used SET command for the Apache web server to set Header dynamically.
<IfModule mod_deflate.c>
# CORS
SetEnvIfNoCase Origin "http(s)?://(\w+\.)?(example.com|localhost)(:[0-9]+)?$" AccessControlAllowOrigin=$0
Header set Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Header set Access-Control-Allow-Credentials true
</IfModule>
ADD command didn't work for me.

Answer 7

I am using this in my .htaccess file for allowing access to multiple domains
<ifModule mod_headers.c>
SetEnvIf Origin "http(s)?://(localhost:25120|domain.com|domain2.com)$" AccessControlAllowOrigin=$0
Header add Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Header always set Access-Control-Allow-Methods: "GET,POST,OPTIONS,DELETE,PUT"
</ifModule>

Answer 8

For Multiple domains, in your .htaccess:
<IfModule mod_headers.c>
SetEnvIf Origin "http(s)?://(www\.)?(domain.com|domain.online|domain.in|domain.net|domain.site|domain.website|domain.space)$" AccessControlAllowOrigin=$0
Header set Access-Control-Allow-Origin %{AccessControlAllowOrigin}e env=AccessControlAllowOrigin
Header set Access-Control-Allow-Credentials true
</IfModule>
it 100% works for me

Answer 9

This works for me in Classic ASP:
If Request.ServerVariables("HTTP_ORIGIN") = "http://domain1.com" Then
Response.AddHeader "Access-Control-Allow-Origin","http://domain1.com"
ElseIf Request.ServerVariables("HTTP_ORIGIN") = "http://domain2.com" Then
Response.AddHeader "Access-Control-Allow-Origin","http://domain2.com"
'and so on
End If