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[Directory](/) 2. / 3. groton-school/slim-lti-partitioned-session ActiveLibrary groton-school/slim-lti-partitioned-session ========================================== Negotiate CHIPS partitioned third party session cookies from an embedded LTI Tool 2.2.0(7mo ago)0309[2 PRs](https://github.com/groton-school/slim-lti-partitioned-session/pulls)GPL-3.0PHPCI passing Since Aug 6Pushed 1mo agoCompare [ Source](https://github.com/groton-school/slim-lti-partitioned-session)[ Packagist](https://packagist.org/packages/groton-school/slim-lti-partitioned-session)[ RSS](/packages/groton-school-slim-lti-partitioned-session/feed)WikiDiscussions main Synced 1mo ago READMEChangelogDependencies (12)Versions (17)Used By (0) groton-school/slim-lti-partitioned-session ========================================== [](#groton-schoolslim-lti-partitioned-session) Negotiate CHIPS partitioned third party session cookies from an embedded LTI Tool [![Latest Version](https://camo.githubusercontent.com/d1242803aba1c4e808c160ca5c2ab97b49b2db8c83b721ebf5ee616b09d10a6f/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f67726f746f6e2d7363686f6f6c2f736c696d2d6c74692d706172746974696f6e65642d73657373696f6e2e737667)](https://packagist.org/packages/groton-school/slim-lti-partitioned-session) Caution ------- [](#caution) This package is likely going to be fragmented into three separate, more-focused packages in the near future: one to [implement a partitioned session cookie version of `Odan\Session\PhpSession`](https://github.com/groton-school/slim-lti-partitioned-session/commit/acc6830582f672d1955a39403a4c00cdce746a4a), one to [negotiate the third-party cookie on the Slim Framework](https://github.com/groton-school/slim-lti-partitioned-session/blob/main/src/RouteBuilder.php), and [one to implement the LTI `LaunchHandler`](https://github.com/groton-school/slim-lti-partitioned-session/blob/main/src/Handlers/LaunchHandler.php) that directs into the third-party cookie negoation. Install ------- [](#install) ``` composer require groton-school/slim-lti-partitioned-session ``` Use --- [](#use) This implementation expects a default [slim-skeleton](https://github.com/slimphp/Slim-Skeleton#readme) and relies on [groton-school/slim-lti-shim](https://github.com/groton-school/slim-lti-shim#readme) and [packbackbooks/lti-1p3-tool](https://github.com/packbackbooks/lti-1-3-php-library#readme) for core LTI Tool functionality. 1. Optionally, implement [`SettingsInterface`](https://github.com/groton-school/slim-lti-partitioned-session/blob/main/src/SettingsInterface.php) -- alternatively[`DefaultSettings`](https://github.com/groton-school/slim-lti-partitioned-session/blob/main/src/DefaultSettings.php) are available 2. [Define the dependency on either your `SettingsInterface` implementaton or the `DefaultSettings` implementation](https://github.com/groton-school/slim-skeleton/blob/0b32f964d753376ed2c2d9af4460e96342bbe919/app/dependencies.php#L26-L27) 3. [Inject remaining dependencies](https://github.com/groton-school/slim-skeleton/blob/0b32f964d753376ed2c2d9af4460e96342bbe919/app/dependencies.php#L22) 4. [Register the cookie-negotiation routes](https://github.com/groton-school/slim-skeleton/blob/0b32f964d753376ed2c2d9af4460e96342bbe919/app/routes.php#L21-L23) ### groton-school/slim-skeleton@dev-gae/lti-tool [](#groton-schoolslim-skeletondev-gaelti-tool) [groton-school/slim-skeleton](https://github.com/groton-school/slim-skeleton/tree/gae/lti-tool) is the canonical example of how this shim is meant to be used. How --- [](#how) Given the insidiuous prevalance of user-tracking web technologies, and the use of third-party cookies to facilitate them, many browsers have imposed hard limits on the use of third-party cookies. This is awkward, because the LTI standard is built on the assumption that a) third-party cookies will be readily available for the OIDC handshake and launch and b) most resources will be embedded in a third-party IFRAME context. This package provides a modified `LaunchHandler` compatible with [groton-school/slim-lti-shim](https://github.com/groton-school/slim-lti-shim) that injects a third-party cookie test into the LTI Tool launch. This is paired with the `PartitionedSession` middleware that ensures that a) all session cookies are sent as both `Secure` and `Partitioned` (which is enough for Chromium-based browsers). If third-party cookies cannot be initially set (as is the case when working with Safari and other WebKit-based browsers using [ITP](https://www.cookiestatus.com/safari/)), a more interactive permissions-handshake with the user is required. The package negotiates this handshake and then uses the `PartitionedSession` middleware to resume the originally-launched LTI Tool session and provide the LTI resource. [![sequence diagram](./docs/sequence.png)](./docs/sequence.png) ### Health Score 37 — LowBetter than 83% of packages Maintenance78 Regular maintenance activity Popularity12 Limited adoption so far Community6 Small or concentrated contributor base Maturity44 Maturing project, gaining track record Bus Factor1 Top contributor holds 100% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~5 days Total 13 Last Release 221d ago Major Versions 1.3.5 → 2.0.02025-09-09 ### Community Maintainers ![](https://www.gravatar.com/avatar/d0554a28104c65004c6de4d335ada25cf2763c8a9691dc5611314486d461fa4c?d=identicon)[battis](/maintainers/battis) --- Top Contributors [![battis](https://avatars.githubusercontent.com/u/419619?v=4)](https://github.com/battis "battis (65 commits)") --- Tags chipsitpltilti-toollti1p3session-managementslim-frameworkslim4third-party-cookies ### Code Quality Code StylePHP CS Fixer ### Embed Badge ![Health badge](/badges/groton-school-slim-lti-partitioned-session/health.svg) ``` [![Health](https://phpackages.com/badges/groton-school-slim-lti-partitioned-session/health.svg)](https://phpackages.com/packages/groton-school-slim-lti-partitioned-session) ``` ### Alternatives [respect/validation The most awesome validation engine ever created for PHP 5.9k37.4M383](/packages/respect-validation)[bref/bref Bref is a framework to write and deploy serverless PHP applications on AWS Lambda. 3.4k9.6M55](/packages/bref-bref)[phlak/directory-lister PHP directory lister 2.5k1.4k](/packages/phlak-directory-lister)[rareloop/lumberjack-core A powerful MVC framework for the modern WordPress developer. 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