Re: How does chromium simulate keyboard events using CGEventPost in pre login agent?
Re: How does chromium simulate keyboard events using CGEventPost in pre login agent?
- Subject: Re: How does chromium simulate keyboard events using CGEventPost in pre login agent?
- From: Doug Hill <email@hidden>
- Date: Thu, 05 Jan 2017 12:05:22 -0800
It’s possible “untrusted” means not code-signed.
> On Jan 4, 2017, at 11:36 PM, Sai Prasanna <email@hidden> wrote:
>
> I have created a pre-login agent which uses CGEventPost for simulating
> keyboard. FYI I am developing a remote control app similar to teamviewer.
>
> Keyboard (I tried other event sources too)
>
> CGEventRef keyEvent = CGEventCreateKeyboardEvent( NULL, keyCode, down ) ;
> CGEventPost( kCGHIDEventTap, keyEvent ) ;
> CFRelease( keyEvent ) ;
>
> Mouse
>
> CGEventRef event = CGEventCreateMouseEvent(eventSource, eventType,
> mouseLocation, mouseButton );
> CGEventPost(kCGHIDEventTap, event);
> CFRelease(event);
>
> Pre-login launch agent
>
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
> "http://www.apple.com/DTDs/PropertyList-1.0.dtd";>
> <plist version="1.0">
> <dict>
> <key>Label</key>
> <string>my app label</string>
> <key>LimitLoadToSessionType</key>
> <string>LoginWindow</string>
> <key>RunAtLoad</key>
> <true/>
> <key>WorkingDirectory</key>
> <string>My app directory</string>
> <key>ProgramArguments</key>
> <array>
> <string>app absolute path</string>
> <string>service</string>
> <string>myservice</string>
> </array>
> <key>KeepAlive</key>
> <true/>
> </dict>
> </plist>
>
> CGEventPost is not working, I get the following in the Console logs after
> login
>
> Untrusted apps are not allowed to connect to
> Window Server before login.
>
> I have searched o chromium's remote control (which has keyboard and mouse
> simulation working) source code. They use CGEventPost for keyboard, but it
> works in login window.
>
> https://cs.chromium.org/chromium/src/remoting/host/
> input_injector_mac.cc?rcl=0&l=42
>
> They seem to use a sh file in privileged helper tools directory and use to
> to load the service, I tried putting our service in privileged helpers
> tool, but still the event handling fails.
>
> The Deprecated API CGPostMouseEvent, CGPostKeyBoardEvent work without
> problem , but would really like to know how non deprecated keyboard API
> works in chromium.
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