Thanks Mike. I will try again to find the flag in source of FreeRDP ( different versions ).
On Mar 1, 2018 9:03 AM, "Mike Jumper" <[email protected]> wrote: > You will need to go through the FreeRDP source to determine what that flag > does, and then look through the source of other versions to see what has > the same effect, assuming that flag is not simply a place for the xfreerdp > to store a command-line parameter. > > - Mike > > On Feb 28, 2018 19:22, "Amarjeet Singh" <[email protected]> wrote: > > Likewise Guacamole used device_redirection for LEGACY_SETTINGS else > DeviceRedirection, I have to implement it for clipboard while pushing > settings to FreeRDP rdp_settings structure. > I do know RedirectClipboard but not sure of LEGACY_SETTINGS of rdp_settings > structure. > @ Mike I tried to find that in different versions of FreRDP but didn't find > anything. RedirectCipboard is in the version of 1.0.2. > > On Mar 1, 2018 8:43 AM, "Amarjeet Singh" <[email protected]> wrote: > > > Though it's working but I have to handle and send the ack that clipboard > > is disabled if request comes from client to server. > > > > On Mar 1, 2018 8:37 AM, "Amarjeet Singh" <[email protected]> wrote: > > > >> I have already added clipboard_enable falg in rdp_settings.h and > >> rdp_settings.c and parse the value of this flag. > >> On the basis of this flag I have loaded the cliprdr plugin and > >> clipboard_handler. > >> I have to pass this flag to FreeRDP rdp_settings structure as there is a > >> varaible RedirectClipboard as per FreeRDP Manual for latest by version. > >> I have also handled the events of cliprdr on the basis of this flag. > >> > >> Only thing left is to push the settings to FreeRDP. > >> > >> On Mar 1, 2018 1:57 AM, "Mike Jumper" <[email protected]> wrote: > >> > >> On Wed, Feb 28, 2018 at 1:01 AM, Amarjeet Singh <[email protected]> > >> wrote: > >> > >> > Hi Team, > >> > > >> > I am working on enabling and disabling clipboard. > >> > > >> > I went through *FreeRDP Manual* from which I found the following > >> variable > >> > in rdpSettings structure which is as follows:- > >> > > >> > >> As far as disabling clipboard access within Guacamole is concerned, > simply > >> requesting FreeRDP to not use clipboard would be the RDP version of > >> genetically engineering your dinosaurs to be female. You should instead > >> absolutely guarantee that clipboard will not function by controlling > >> things > >> at the Guacamole protocol level, ignoring received clipboard data from > the > >> client (by not providing a handler for that data), and not forwarding > >> clipboard data to the client even if received from the RDP server. > >> > >> Recall that, for clipboard data to be received/sent by the client, a > >> "clipboard" instruction is used to establish the stream of data: > >> > >> http://guacamole.apache.org/doc/gug/protocol-reference.html# > >> clipboard-instruction > >> > >> To ensure this does not actually have an effect, you would want to make > >> handling of that instruction conditional depending on some > enable/disable > >> flag, and disable sending of clipboard data to connected clients while > >> that > >> flag is sent. Conditional handling of instructions is already used for > >> implementing the "read-only" parameter, and is really what would be > >> required here: > >> > >> https://github.com/apache/guacamole-server/blob/bc5b01d4d8ab > >> 0c3c89a08007316d33012261f6b3/src/protocols/rdp/user.c#L97-L114 > >> > >> Besides being reliable, this has the added bonus that the fact that > >> clipboard streams cannot be established is automatically exposed to the > >> client through "ack" instructions, and implementations can choose to > >> handle > >> this by adjusting the interface accordingly, warning the user that > >> clipboard has been disabled, etc. > >> > >> - Mike > >> > >> > >> >
