Is it no longer possible to create Virtual Webcams on MacOS without running afoul of Hardened Runtime? How do CoreMedia Virtual Webcam plugins work, and do they inherently conflict with Library Validation? (e.g., loading a library into the camera-using process in a way that's no longer permitted) ( /Library/CoreMediaIO/Plug-Ins/DAL/ugin/Contents/MacOS/SnapCamera) Question I've also noticed that the plugin appears in Activity Monitor's Open Files and Ports for a couple processes belonging to Teams and Chrome. It looks like at least one of Chrome's helpers has the entitlement: codesign -d -entitlements :- /Applications/Google\ Chrome.app/Contents/Frameworks/Google\ Chrome\ amework/Versions/.92/Helpers/Google\ Chrome\ Helper\ \(Plugin\).appĮxecutable=/Applications/Google Chrome.app/Contents/Frameworks/Google Chrome amework/Versions/.92/Helpers/Google Chrome Helper (Plugin).app/Contents/MacOS/Google Chrome Helper (Plugin)Ĭom.allow-unsigned-executable-memory They also work in Google Chrome (on this test page). Both have CoreMediaIO plugins, and neither works with recent Zoom.Īll three virtual cameras work in Microsoft Teams, which has the entitlement: > codesign -d -entitlements :- /Applications/Microsoft\ Teams.app/ |grep validĮxecutable=/Applications/Microsoft Teams.app/Contents/MacOS/TeamsĬom.disable-library-validation Out of curiosity, I tried a couple other virtual webcams - Iriun Webcam and EpocCam –- and they behave similarly. usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.50.4) usr/lib/libc .1.dylib (compatibility version 1.0.0, current version 400.9.0) System/Library/Frameworks/amework/Versions/A/IOSurface (compatibility version 1.0.0, current version 1.0.0) System/Library/Frameworks/amework/Versions/A/IOKit (compatibility version 1.0.0, current version 275.0.0) System/Library/Frameworks/amework/Versions/C/Foundation (compatibility version 300.0.0, current version 1452.23.0) System/Library/Frameworks/amework/Versions/A/CoreVideo (compatibility version 1.2.0, current version 1.5.0) System/Library/Frameworks/amework/Versions/A/CoreMediaIO (compatibility version 1.0.0, current version 1.0.0) System/Library/Frameworks/amework/Versions/A/CoreMedia (compatibility version 1.0.0, current version 1.0.0) System/Library/Frameworks/amework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1452.23.0) LibSnapCamera.dylib (compatibility version 1.0.0, current version 1.0.0) Library/CoreMediaIO/Plug-Ins/DAL/ugin/Contents/MacOS/SnapCamera: I'm not familiar with the particular APIs you use to build a virtual webcam, but it looks like it involves CoreMediaIO plugins:Ĭreating a Virtual Webcam Device for OS X > otool -L /Library/CoreMediaIO/Plug-Ins/DAL/ugin/Contents/MacOS/SnapCamera With the same release, Snap Camera, a virtual webcam app, stopped working. #Mac os skype add helper for mac#Zoom for Mac 4.6.9, which addresses scary security flaws, removes the disable-library-validation entitlement.
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