synapse/changelog.d/11936.bugfix at c4c98c75188015b7ee921ee0adc2c428fbb9b6b4 - mirrors/synapse - Sadium Git

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Denis Kasak 337f38cac3

Implement a content type allow list for URL previews (#11936 )

This implements an allow list for content types for which Synapse will attempt URL preview. If a URL resolves to a resource with a content type which isn't in the list, the download will terminate immediately.

This makes sense given that Synapse would never successfully generate a URL preview for such files in the first place, and helps prevent issues with streaming media servers, such as #8302.

Signed-off-by: Denis Kasak dkasak@termina.org.uk

2022-02-10 15:43:01 +00:00

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Implement an allow list of content types for which we will attempt to preview a URL. This prevents Synapse from making useless longer-lived connections to streaming media servers.