Covscan report contains various memory leak defects which were marked
as important. I have spent some time analyzing them and although they
were marked as important, most of them are in error cases, so probably
nothing serious. Let's fix most of them anyway. The rest are false
positives, or too complicated to fix, or already fixed in master, or
simply I am unsure about them.
Relates: https://github.com/FreeRDP/FreeRDP/issues/6981
For the negative scrolling direction, RDP uses the two's complement,
instead of the positive wheel value with the negative flag.
xfreerdp currently uses the positive wheel value in addition to the
negative flag, which results in a wrong wheel value on the server side
(136 instead of 120).
Fix this, by using the correct wheel rotation value, which is in the
two's complement.
the discrete axis event gives changes in steps just like the
xfreerdp version uses. This way scrolling can be implemented
consistent with the behaviour of xfreerdp
* client: Fix exit codes for /help and similar option
Currently, non-zero exit code is returned for /version, /buildconfig, /help,
/monitor-list, /kbd-list and /kbd-lang-list command-line options for several
clients. This is against conventions because 0 is usually returned in
such cases. Also, there is potentially another problem that the returned
codes overflow on UNIX systems (where the exit code is a number between 0
and 255). Let's fix the clients to return 0 in the mentioned cases to honor
conventions and 1 for the command-line parsing errors (or -1 for clients
who already use that value).
Fixes: https://github.com/FreeRDP/FreeRDP/issues/6686
* Refactored freerdp_client_settings_command_line_status_print_ex
Now returns 0 if help or version information was requested.
* Do not eliminate original error status.
Co-authored-by: akallabeth <akallabeth@posteo.net>
This fixes the following defects reported by covscan tool:
- client/Wayland/wlf_input.c:251: overrun-local: Overrunning array "contacts" of 10 32-byte elements at element index 10 (byte offset 351) using index "i" (which evaluates to 10).
- client/Wayland/wlf_input.c:308: overrun-local: Overrunning array "contacts" of 10 32-byte elements at element index 10 (byte offset 351) using index "i" (which evaluates to 10).
- client/Wayland/wlf_input.c:360: overrun-local: Overrunning array "contacts" of 10 32-byte elements at element index 10 (byte offset 351) using index "i" (which evaluates to 10).
- client/Wayland/wlf_input.c:251: error[arrayIndexOutOfBounds]: Array 'contacts[10]' accessed at index 10, which is out of bounds.
- client/Wayland/wlf_input.c:308: error[arrayIndexOutOfBounds]: Array 'contacts[10]' accessed at index 10, which is out of bounds.
- client/Wayland/wlf_input.c:360: error[arrayIndexOutOfBounds]: Array 'contacts[10]' accessed at index 10, which is out of bounds.
- client/Wayland/wlf_input.c:246: uninit_use_in_call: Using uninitialized value "y" when calling "wlf_scale_coordinates".
- client/Wayland/wlf_input.c:246: uninit_use_in_call: Using uninitialized value "x" when calling "wlf_scale_coordinates".
The maximal number of touches can be higher then 10, see:
https://wayland.freedesktop.org/libinput/doc/latest/touchpads.html
Let's increse the MAX_CONTACTS count and add checks to prevent usage of
uninitialized values.
Thanks to @yol and @SaschaWessel a bug in scroll step conversion
was uncovered. The RDP value ranges are inverted when scrolling
in negative direction.
In `wlf_cliprdr_server_format_data_request()` `ConvertToUnicode()` may return 0
while not allocating memory for `cdata` and not setting `cdata` to a valid
address. In this case, `data` points to a random address.
Settting `cdata` to NULL before calling `ConvertToUnicode()` fixes this issues.
According to the channel docs, this field is only used in format data
request. Therefore, there's no need to hold it in the response. cliprdr
server code was copy-pasted from client code, therefore this must be
some leftover.
The compositor only samples rects that we damage (and have therefore
been overwritten). As we are doing damage tracking and reporting,
memcpy of our old drawing buffer serves no purpose.
For future GFX channel functions an image scaling function is required.
This moves the implementation from wayland client to core library
and adds support for the much faster SWScale library.
