When receiving a file list, xfreerdp3 rebuilds the content of the FUSE
filesystem.
Since fetching uri-lists can happen during a paste action too, xfreerdp3
caches the content of the last fetched mime type.
However, uri-lists exists in different variations, e.g. nautilus uses a
different mime type, than gnome-terminal does.
Furthermore, FormatLists can also contain other formats in addition to
file lists.
Fetching those contents during a paste operation leads to IO errors in
the paste operation.
In order to fix those errors, cache every mimetype in two hash tables:
One for the raw (unconverted) data, and one for the converted data.
When a content request is received, xfreerdp3 can with the already
cached converted data, directly serve the data.
If the content is not available as cached data, but its source data was
already fetched, use that source data to create the converted data.
Then serve the converted data.
Only if no cached converted data or cached raw data is available, issue
a new FormatDataRequest.
Format lists can contain multiple clipboard formats. When the data for
one is requested, xfreerdp caches it.
When the data for a different format in the same format lists is
requested, xfreerdp cannot use the already cached data, since that data
refers to a different format.
As a result, xfreerdp needs to ask for the data of the now requested
format.
However, this is currently not the case. xfreerdp will just provide the
data of the first request after receiving the last format list.
In order to fix this situation, also save the format id of the last
requested format.
If the format id of the cached data matches the one of the current
request, serve the data from the cached data.
Otherwise, issue a new FormatDataRequest.
Commit 6492a00959 introduced a way to
relieve the filename restriction, which ensured that file lists
containing files with names, that have characters, which are not allowed
on MS Windows.
This relief handling kicked in, when xfreerdp did not connect to MS
Windows RDS.
Commit d521c7fa74 got rid of any
wClipboardDelegate occurrence in xf_cliprdr.c, which also got rid of the
filename restriction relieve handling.
However, the relief handling was not added back, so do it now.
to debug bug reports occuring only with certain setups wrap the function
call with a logging edition so we have the arguments available in the
log for debugging.
most protocol internal caches do not need to be exposed. this reduces
the public API and allows us to more easily improve/change this during a
release cycle
