[Webkit-unassigned] [Bug 214813] New: [WPE][GTK] Add WebKitWebExtension API to indicate web extension does not link to GPL code, and use it to gate WebRTC access (?)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=214813

            Bug ID: 214813
           Summary: [WPE][GTK] Add WebKitWebExtension API to indicate web
                    extension does not link to GPL code, and use it to
                    gate WebRTC access (?)
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at gnome.org
                CC: bugs-noreply at webkitgtk.org, youennf at gmail.com

Problem statement: libwebrtc uses BoringSSL, which uses the OpenSSL license, which is not GPL-compatible and cannot be linked to GPL code. Several applications use GPL-licensed web extensions -- I can think of three off the top of my head -- so we exclude Source/ThirdParty/libwebrtc in Tools/[gtk,wpe]/manifest.txt.in to ensure libwebrtc is never distributed in releases and cannot be linked with GPL code.

Strawman proposal: void webkit_web_extension_allow_gpl_incompatible_features(gboolean);

If no web extensions are loaded, or if every loaded web extension calls this function, then we can enable WebRTC. If any WebKitWebExtension fails to call the function, we get no WebRTC. We would then relicense the Epiphany web extension to LGPLv2+ and enjoy WebRTC to heart's content.

Downside of this plan: we'd have to change WebKit to dlopen libwebrtc if and only if using GPL-incompatible code is allowed. Not sure how hard that would be.

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