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Update the $config->sessionFingerprint option to also support fingerprinting of browser http "accept" header, plus update documentation for this to use bitmask examples rather than predefined numbers.

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Ryan Cramer
2020-06-05 08:08:50 -04:00
parent 2de85fab4b
commit fd2fdd91f0
3 changed files with 77 additions and 38 deletions
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52
wire/config.php
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@@ -293,27 +293,43 @@ $config->sessionChallenge = true;
/**
* Use session fingerprint?
*
* Should login sessions be tied to IP and user agent?
* IP fingerprinting may be problematic on dynamic IPs.
* Below are the possible values:
* Should login sessions also be tied to a fingerprint of the browser?
* Fingerprinting can be based upon browser-specific headers and/or
* IP addresses. But note that IP fingerprinting will be problematic on
* dynamic IPs.
*
* 0 or false: Fingerprint off
* 1 or true: Fingerprint on with default/recommended setting (currently 10).
* 2: Fingerprint only the remote IP
* 4: Fingerprint only the forwarded/client IP (can be spoofed)
* 8: Fingerprint only the useragent
* 10: Fingerprint the remote IP and useragent (default)
* 12: Fingerprint the forwarded/client IP and useragent
* 14: Fingerprint the remote IP, forwarded/client IP and useragent (all).
* Predefined settings:
*
* If using fingerprint in an environment where the user’s
* IP address may change during the session, you should
* fingerprint only the useragent, or disable fingerprinting.
* - 0 or false: Fingerprint off
* - 1 or true: Fingerprint on with default setting (remote IP & useragent)
*
* Custom settings:
*
* - 2: Remote IP
* - 4: Forwarded/client IP (can be spoofed)
* - 8: Useragent
* - 16: Accept header
*
* To use the custom settings above, select one or more of those you want
* to fingerprint, note the numbers, and use them like in the examples:
* ~~~~~~
* // to fingerprint just remote IP
* $config->sessionFingerprint = 2;
*
* // to fingerprint remote IP and useragent:
* $config->sessionFingerprint = 2 | 8;
*
* // to fingerprint remote IP, useragent and accept header:
* $config->sessionFingerprint = 2 | 8 | 16;
* ~~~~~~
*
* If using fingerprint in an environment where the user’s IP address may
* change during the session, you should fingerprint only the useragent
* and/or accept header, or disable fingerprinting.
*
* If using fingerprint with an AWS load balancer, you should
* use one of the options that uses the “client IP” rather than
* the “remote IP”, fingerprint only the useragent, or disable
* fingerprinting.
* If using fingerprint with an AWS load balancer, you should use one of
* the options that uses the “client IP” rather than the “remote IP”,
* fingerprint only useragent and/or accept header, or disable fingerprinting.
*
* @var int
*