* fix StatusW_Call to rely and use SCardStatusW
* fix trace call in StatusW_Call - needs to be called after the sizes
are set
* unify SCardStatus functions for pcsc - let the internal function handle unicode directly
This fixes an issue with size calculations of SCardStatusW.
If the display channel is available we use it to allow the user to resize the
xfreerdp window. When the window is resized we announce a new monitor layout and
the server reacts by doing a reactivation sequence to the new size.
The minimum window size is limited to 300x300 as 2012 servers crash horribly
if we send them a smaller layout.
SCardAddReaderName isn't part of the SCard API.
Note: removing this also removes the possibility to redirect single
smartcard readers with /smartcard:READERNAME. However this features
wasn't implemented in a general way and will be re-added as part of
the smart card channel directly.
In case SCardGetStatusChange returned an error the call didn't return
any data but STATUS_NO_MEMORY as the calloc failed. This caused problems
with multiple applications server side (hangs and incorrect behavior).
Now the case when no readers are returned is handed correctly and the
data is also filled and send if the call fails.
The smart card channel tried to mimic mstsc's behavior on if an IRP was
processed synchronously or asynchronously. As the channel uses one thread per
context it could happen, especially with PCSC, that the main
channel thread was blocked waiting for an smart card operation to
complete. To prevent that behavior only call known safe functions in the
main thread (like CreateContext) and call the rest asynchronously.
For example the channel would block if a ListReaders is invoked on
the same context where a GetStatusChange (infinite timeout)
was already pending. Only when a status change happened the channel
would continue.
Note: Due to the one context per thread design it's important that
cancel isn't queued an alway run synchronously. Otherwise a specific
context might lock.
Device control calls always returned SCARD_S_SUCCESS even if an error
occurred. This caused server side software (including the card manager)
to behave incorrectly.
According to MS-RDPESC the smart card channel must set the IoStatus to
an NTSTATUS in case a encoding or decoding error happens. The smart card
channel did this correctly but the output stream was modified
incorrectly causing the smart card remote manager to stop in error
cases.
1. In connect_to_sshagent() if connect() fails, the socket agent_fd is
leaked. It needs to be closed before returning.
2. Fix copyright messages.
3. Make if statement with call to CreateThread() clearer to read.
Add the sshagent plugin to forward the ssh-agent protocol over an RDP
dynamic virtual channel, just as the normal ssh-agent forwards it over
an SSH channel. Add the "/ssh-agent" command line option to enable it.
Usage:
Run FreeRDP with the ssh-agent plugin enabled:
xfreerdp /ssh-agent ...
In the remote desktop session run xrdp-ssh-agent and evaluate the output
in the shell as for ssh-agent to set the required environment variables
(specifically $SSH_AUTH_SOCK):
eval "$(xrdp-ssh-agent -s)"
This is the same as for the normal ssh-agent. You would typically do
this in your Xsession or /etc/xrdp/startwm.sh.
Limitations:
1. Error checking and handling could be improved.
2. This is only tested on Linux and will only work on systems where
clients talk to the ssh-agent via Unix domain sockets. It won't
currently work on Windows but it could be ported.
Added some checks so that when setting a cache entry fails, we close connection (or
we fail later when trying to use that empty entry).
The small cache egfx capability has also been fixed.
