Add support for back-channel logout #302
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DeepDiver1975
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DeepDiver1975
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chore: code cleanup of back-channel PR #302
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Fixes #116
This adds functions that support back-channel logout.
With this, an implementor can evaluate
verifyLogoutToken()and if true, proceed with the developer's application-specific technique for ending the subject's session in the RP. (How that is done is left up to the developer, per the OIDC spec. In my case it involves checking server-side for an existing session based on thesidreceived in the back-channel logout token, and destroying it if found. Working great for my needs)I borrowed some of this code from an existing fork of this project, which I discovered by chance whilst browsing the 'downstream' forks. I guess it was never contributed back: https://github.com/dptsi/php-openid-connect-client/blob/master/src/OpenIDConnectClient.php#L1989-L2049
Please use this part of the spec to check the validation is correct: https://openid.net/specs/openid-connect-backchannel-1_0.html#Validation