DevOps9-debug opened a new pull request, #621:
URL: https://github.com/apache/guacamole-server/pull/621
…youts in RDP.
When using Guacamole with the Unicode keyboard layout (ru-ru or en-us), text
input works fine but modifier keys (Ctrl, Shift, Alt) do not trigger correctly
inside RDP sessions. This especially breaks shortcuts like Ctrl+C, Ctrl+V, and
Ctrl+Z, as well as Shift-based capital input in Cyrillic mode.
Root cause:
- The existing keyboard.c scancode mapping and Unicode event handler ignored
control key states when switching layouts.
- Unicode events were sent without associated scancode synchronization,
causing RDP to treat Ctrl/Shift as unpressed.
Fix:
- Updated keyboard.c to properly handle Ctrl, Alt, and Shift state
transitions alongside Unicode key events.
- Ensures Unicode layouts (English and Russian) transmit modifier
combinations correctly to RDP servers.
Tested on:
- Guacamole 1.6.0 / 1.7.0 (patched build)
- FreeRDP 2.11.5
- Windows Server 2019 RDP and Windows 10 Pro RDP
Verified results:
Ctrl+C / Ctrl+V / Ctrl+Z now work in both English and Russian layouts.
Shift-based capital input functions correctly.
Layout switching (Alt+Shift) does not break input handling.
This patch makes Guacamole fully usable in mixed-language (RU/EN)
environments using Unicode keyboard input.
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