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libweston: Allow taking screenshots when debug protocol is enabled

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Screenshots of the outputs can only be taken by having a keyboard
plug-ed in, as to avoid potential malicious intent. On the other hand,
this is problematic as there are cases where a keyboard cannot
be used as a input device. A particular use-case is that for
multiple devices it can be cumbersome to connect a keyboard such
that using ssh can be much easier and can be further automated.

This patch allows taking screenshots without the need of having a
keyboard connected when debug protocol is enabled.

Add also a few words about the fact that this is a serious issue
and can lead to silently leaking the output contents.

Signed-off-by: Marius Vlad <marius.vlad0@gmail.com>
This commit is contained in:
Marius Vlad
2018-12-13 23:04:52 +02:00
parent d9bcc0b171
commit 4e1d9bc72f
2 changed files with 15 additions and 4 deletions
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man/weston.man
+5 -2
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@@ -141,8 +141,11 @@ which any client can use to receive debugging messages from the compositor.
.B WARNING:
This is risky for two reasons. First, a client may cause a denial-of-service
blocking the compositor by providing an unsuitable file descriptor, and
second, the debug messages may expose sensitive information. This option
should not be used in production.
second, the debug messages may expose sensitive information.
Additionally this will expose weston-screenshooter interface allowing the user
to take screenshots of the outputs using weston-screenshooter application,
which can lead to silently leaking the output contents. This option should
not be used in production.
.TP
.BR \-\-version
Print the program version.