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Package ip-address-middleware
Short Description PSR-15 middleware that determines the client IP address and stores it as a ServerRequest attribute
License BSD-3-Clause
Homepage http://github.com/akrabat/rka-ip-address-middleware
Informations about the package ip-address-middleware
Client IP address middleware
PSR-15 Middleware that determines the client IP address and stores it as an ServerRequest
attribute called ip_address
. It optionally checks various common proxy headers and then falls back to $_SERVER['REMOTE_ADDR']
.
Configuration
The constructor takes 4 parameters which can be used to configure this middleware.
Check proxy headers
Note that the proxy headers are only checked if the first parameter to the constructor is set to true
. If it is set to false
, then only $_SERVER['REMOTE_ADDR']
is used.
Trusted Proxies
If you configure to check the proxy headers (first parameter is true
), you have to provide an array of trusted proxies as the second parameter. When the array is empty, the proxy headers will always be evaluated which is not recommended. If the array is not empty, it must contain strings with IP addresses (wildcard *
is allowed in any given part) or networks in CIDR-notation. One of them must match the $_SERVER['REMOTE_ADDR']
variable in order to allow evaluating the proxy headers - otherwise the REMOTE_ADDR
itself is returned.
Attribute name
By default, the name of the attribute is 'ip_address
'. This can be changed by the third constructor parameter.
Headers to inspect
By default, this middleware checks the 'Forwarded', 'X-Forwarded-For', 'X-Forwarded', 'X-Cluster-Client-Ip' and 'Client-Ip' headers. You can replace this list with your own using the fourth constructor parameter.
If you use the nginx, set_real_ip_from directive, then you should probably set this to:
$headersToInspect = [
'X-Real-IP',
'Forwarded',
'X-Forwarded-For',
'X-Forwarded',
'X-Cluster-Client-Ip',
'Client-Ip',
];
If you use CloudFlare, then according to the documentation you should probably set this to:
$headersToInspect = [
'CF-Connecting-IP',
'True-Client-IP',
'Forwarded',
'X-Forwarded-For',
'X-Forwarded',
'X-Cluster-Client-Ip',
'Client-Ip',
];
Security considerations
A malicious client may send any header to your proxy, including any proxy headers, containing any IP address. If your proxy simply adds another IP address to the header, an attacker can send a fake IP. Make sure to setup your proxy in a way that removes any sent (and possibly faked) headers from the original request and replaces them with correct values (i.e. the currently used REMOTE_ADDR
on the proxy server).
This library cannot by design ensure you get correct and trustworthy results if your network environment isn't setup properly.
Installation
composer require akrabat/ip-address-middleware
In Mezzio, copy Mezzio/config/ip_address.global.php.dist
into your Mezzio Application config/autoload
directory as ip_address.global.php
Usage
In Slim 3:
In Laminas or Mezzio, add to your pipeline.php
config at the correct stage, usually just before the DispatchMiddleware
:
If required, update your .env
file with the environmental variables found in /config/autoload/ip_address.global.php
.
Testing
- Code style:
$ vendor/bin/phpcs
- Unit tests:
$ vendor/bin/phpunit
- Code coverage:
$ vendor/bin/phpunit --coverage-html ./build
All versions of ip-address-middleware with dependencies
psr/http-message Version ^1.0 || ^2.0
psr/http-server-middleware Version ^1.0
psr/container Version ^1.0 || ^2.0