| Commit message (Collapse) | Author | Age | Files | Lines |
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The activex browser plugin is sending unicode16 text, where as the
xpi one is sending utf8 text. After discussing this on irc we've decided
that utf8 is what we want to use. So the client (this patch), and the
activex will be changed to expect resp. send utf8 text as the title.
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The socket name used to communicate between the xpi browser plugin and the
spicec was predictable allowing a non priviliged user on the same system
to create the socket before spicec does and thus intercept the messages from
the xpi to the client, including login credentials. This security vulnerability
has been registred with mitre as CVE-2010-2792:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2792
This patch changes the controller code to instead read the socket name
from an environment variable which gets set by the xpi before executing
the spicec, making the socketname private between the client and the xpi.
Note that this means that the controller will only work with an xpi which
has matching changes, the changes are present in the latest version of the
xpi as available as update for / with RHEL-5.5 and RHEL-6.0 .
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Now that Application::hide_me actually does what the name suggests
(hide the entire client, ie all client windows), the gui using it to
not show the gui layer leads to the entire client disappearing when
one presses close in the GUI or dismisses a GUI dialog. This patch makes
the GUI code call hide_gui instead of hide_me, fixing this.
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There were 2 issues with window management under KDE
1) When an app does its own focus management like we do, kwin expects
an explicit raise for the app to get to the top, so we did have focus,
but would have other windows (partially) covering the client window
-> do a raise after setting focus to ourselves
2) When switching from fullscreen <-> window, we unmap and remap our
window, then set focus to ourselves. kwin thinks this means we're trying
to steal the focus without the user asking for it. This patch makes us
set the _NET_WM_USER_TIME property on our window, this helps kwin's
focus stealing code to see that we are really not stealing the focus,
just responding to a user event.
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1) Make the order when starting up in fullscreen mode the same as when
switching from window -> fullscreen:
First set the mode, then make the window fullscreen
2) Change the order when leaving fullscreen mode, first restore the original
monitor mode, then make the window non fullscreen. Changing the monitor
mode in X11 causes the window manager to re-arrange windows, and if this
happens while compiz is busy mapping the window it gets confused and
maps the window with a maxmimized size.
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Some window managers will ignore the fullscreen hint, unless WmSizeHints
allow them to resize the window so that they can give it the size of
the roo-window. This fixes fullscreen mode in compiz.
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XRRSet* calls wait for a XReply, so add a missing XLockDisplay,
this fixes a hang (due to a race so not always) when switching between
windowed and fullscreen mode.
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Currenty, we check the agent caps in RedClient::handle_agent_connected
for VD_AGENT_CAP_DISPLAY_CONFIG and if present send display_config, but at
this time we have not received the caps yet, so remove this.
Also the send_agent_display_config call in on_agent_announce_capabilities
lacks a check for _agent_disp_config_sent, and we send the display config
before announcing that we may do so by sending our own caps, which seems
inpolite.
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Spice client controller enables external control (e.g., by XPI or ActiveX) of
the client functionality.
The controller protocol enables setting parameters (host, port, sport, pwd,
secure channels, disabled channels, title, menus, hotkeys etc.), connecting
the server, showing and hiding the client etc.
The controller is based on the cross-platform named pipe.
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Spice foreign menu enables external control of the client menu.
The foreignmenu protocol enables an external application to:
add a submenu, set its title, clear it, add/modify/remove an item etc.
Foreign menu is based on the cross-platform named pipe.
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Used by controller. One instance at a time, not thread-safe.
Add basename() for win32.
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The use of epoll in the client is totally overkill in terms of
scalability, and its a problem for portability. The OSX port converts
this to use select, but keeps some of the old complexities in the code.
This new patch makes it simpler and look much more like the windows
code.
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Since libX11-1.3.4 the multi-threading handling code of libX11 has been
changed, see:
http://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=933aee1d5c53b0cc7d608011a29188b594c8d70b
This causes several issues. One of them is the display inside the
client not getting updated when there are no XEvents being generated,
this is caused by the following part of the referenced commit message:
Caveats:
- If one thread is waiting for events and another thread tries to read a reply,
both will hang until an event arrives. Previously, if this happened it might
work sometimes, but otherwise would trigger either an assertion failure or
a permanent hang.
We were depending on the otherwise behavior and apparently were lucky.
This can be seen by starting F14 in runlevel 3 and then doing startx
and not touching the mouse / keyb afterwards. Once you move the mouse
(generate an event you see the UI contents being updated but not before.
Another thing both I and Alon (iirc) have seen are hangs where 2
threads are stuck in XSync waiting for a reply simultaneously. This might
be related to libxcb version, according to the libX11 commit a libxcb
newer then 1.6 was needed, and my system had 1.5 at the time I saw this
after updating to libxcb 1.7 I can no longer reproduce.
This patch tackles both problems (and is needed for the 1st one
indepently of the 2nd one possibly being fixed) by adding XLockDisplay
calls around all libX11 calls which wait for a reply or an event.
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Instead of keeping a flag, we simply check wether the new owner is us or not
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Platform::on_clipboard_notify()
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will wait until png comes in
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Without this patch spicec reproducely hangs in
GlzDecoderWindow::pre_decode_update_window().
When GlzDecoderWindow::will_overflow() returns true,
GlzDecoderWindow::pre_decode_update_window(),
waits for a call to GlzDecoderWindow::post_decode()
to free up some memory
This happens even though there still is pci memory
available (otherwise the driver would not have
been able to send an image to decode in the first
place).
The GlzDecoderWindow::post_decode() call never happens
as the server is waiting for a reply to the decode
of the hanging image, causing the client to hang
for ever.
This patch fixes this by simply removing the
"attempted" pci memory accounting. As there is no
need for that, as the driver already must keep
track of pci memory usage.
I've verified that both the old and new Xorg drivers
take care of not overusing the pci memory themselves
I would expect the same to be true for the windows
driver.
Note the calculating of the glz_window_size in
red_client.cpp cannot be removed as the calculated
value is send as part of the SpiceMsgcDisplayInit on
connect.
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Every time an events comes past where the Window is None (which happens
about once every 5 minutes or so), this annoying "invalid window" message
gets printed. Remove it!
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ClipboardListener callbacks can run from another thread then the
main channel loop thread, where agent messages are normally dispatched from.
So they may not send agent messages directly, instead they should post
events to the main channel loop.
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Well almost remove it, it was possible that another x11 app would acquire
selection ownership, and we would receive a release message from the
agent before having processed the xselection ownership change event.
Then we would set the selection owner to none, overriding the new owner.
As the comment in the patch indicates there still is a minute window left
where something similar can happen after this patch. Nothing we can do
about that (I blame the libX11 selection API).
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Atleast under x11 there is a race condition when setting the clipboard
owner to guest from the RedClient code rather then doing it in Platform.
After the XSetSelectionOwner() in Platform::on_clipboard_grab(), which runs
from the main message loop thread, the x11 event thread can receive a
SelectionRequest event from another x11 app, before the RedClient code
has set the clipboard owner, which will trigger the owner != guest
check in the SelectionRequest event handling code.
By moving the setting of the owner in to Platform::on_clipboard_grab() it
gets protected by the clipboard lock, which closes this tiny race.
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As we need a realloc function it is better to use malloc / free /
realloc then to diy, esp. as realloc can grow the buffer without
needing a memcpy.
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XSelectionRequest events must be answered in the order they were
received. But for TARGETS request we can answer directly, where as
other requests need to go through the agent. This causes us to handle
things out of order, and this can cause us to have more then one
requets outstanding with the agent, which is also not what we want.
So this patch introduces a queue for XSelectionRequest events, causing
us to handle them 1 at a time and always in order.
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And also handle many x11 targets (ie utf8 variants) to a single agent
type mapping.
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Since we do not always "pump" libX11's event loop by calling
XPending (we only call XPending when there is data to read from the
display fd), we must always explictly flush any outstanding requests.
This patch adds a whole bunch of missing XFlush calls.
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Make sure we process the XFixesSetSelectionOwnerNotify event caused by
us setting the clipboard owner to none, directly after setting the owner
to none. Otherwise we may end up changing the clipboard owner to none, after
it has already been re-owned because the XFixesSetSelectionOwnerNotify event
to owner none is event is still pending when we set the new owner, and
then changes the owner back to none once processed messing up our clipboard
ownership state tracking.
I saw this happening when doing copy twice in succession inside the guest.
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Request targets from new clipboard owner, rather then assuming UTF-8
(not entirely complete yet, the last pieces will be in another patch).
Atleast as important this code unifies the selection getting code
for incr and non incr getting of selection data so that it can be
used for both getting regular selection data and for getting targets
selection data.
This also fixes a big bug in the (I believe untested sofar) incr support
code which was interpreting the contents of PropertyNotify events as
XSelectionEvents rather then as XpropertyEvents which are completely
differen structs!
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Instead of keeping a flag, we can and should simply check wether the
new owner reported in the event it us or not. Also check for the
new owner being none and send a clipboard_release when that is the
case (through set_clipboard_owner(owner_none)).
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Given that all clipboard handling is async, it is possible to for
example receive a request for clipboard data from the agent
while the client no longer owns the clipboard (ie a
VD_AGENT_CLIPBOARD_RELEASE message is in transit to the agent).
Thus it is necessary to keep track of our notion of clipboard ownership
and check received clipboard messages (both from other apps on the client
machine and from the agent) to see if they match our notion and if not
drop, or in case were a counter message is expected nack the clipboard
message.
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Rename the 4 platform clipboard functions which get called
upon receival of an agent clipboard message to on_clipboard_*
The old set_clipboard_* names were confusing as they suggest being
a class property setter (like set_event_listener) rather then
event handler, and set_clipboard_owner was causing a name conflict
with the next patch in this series.
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This way the events will always get generated and other things
(such as clipboard ownership administration, see the next patches)
can be done in repsonse to the events, even though no message will be send.
This patch also removes the !_agent_caps check from the capability
checks, this is not needed as VD_AGENT_HAS_CAPABILITY checks _agent_caps_size
which will be 0 when _agent_caps is NULL.
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Currently we send a VD_AGENT_CLIPBOARD_RELEASE when we receive a
VD_AGENT_CLIPBOARD_REQUEST with a type which we do not support. This is not
correct, as this means given up clipboard ownership while we may be able
to answer requests with different types. The correct response is to
nack the request by sending a VD_AGENT_CLIPBOARD (data) message with a type
of VD_AGENT_CLIPBOARD_NONE.
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A clipboard owner can indicate that it can supply the data the clipboard
owns in multiple formats, so make the data passed with a
VD_AGENT_CLIPBOARD_GRAB message an array of types rather then a single
type.
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We call XFixesSelectSelectionInput with the clipboard_atom, so we musr
initialize the atoms before calling XFixesSelectSelectionInput.
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send_selection_notify used the clipboard_event, so set it before calling
send_selection_notify.
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XGetAtomName() throws X11 errors when called on a None atom, so wrap
it catching the None case.
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