The Spice server administrator can specify the encoder and codec
preferences to optimize for CPU or bandwidth usage. Preferences are
described in a semi-colon separated list of encoder:codec pairs.
The server has a default preference list which can explicitly be
selected by specifying 'auto'.
Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
As the tokens counter were not being reset you could enter in a
situation where client thinks it has more tokens then server which
would eventually lead to client's disconnection from 0c5eca97f1
onwards (before it was crashing).
It is easy to check the above situation if you track the amount of
tokens you have in the client and simply kill and restart the agent
while doing some file transfer: the client could reach more then 13
tokens which should not really be possible.
Based on patch from Frediano Ziglio <fziglio@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
This variable was always the same value as
dispatcher_allows_client_mouse.
Acked-by: Frediano Ziglio <fziglio@redhat.com>
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Possibly used for debugging or an initial recursive lock.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
Setting "sin" property is equivalent to call
red_char_device_reset_dev_instance so there is no need for a if/else
as the code is doing mostly (beside setting agent_attached) the
same thing
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
RedCharDevice used for the agent has flow control enabled.
This make possible for red_char_device_write_buffer_get to return NULL.
Handle such situation without crashing avoiding NULL dereference.
This fixes https://bugs.freedesktop.org/show_bug.cgi?id=95416.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Uri Lublin <uril@redhat.com>
This was proposed by Christophe as improvement over some typesafe
patches.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
Make code more type safe. This allow to move or delete structure
fields more safely
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
All other classes using RedPipeItem as base use base as parent name
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
Removing an interface cause SpiceBaseInstance->st to be set to NULL.
This pointer was then deferenced in agent code.
As SpiceBaseInstance should not be used after this call make sure
we don't keep pointers to it.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
This code make easier to be sure we don't have dangling pointers
resetting in the function which free the structure.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
The include directory is specified with the -I which is the directory
used directly by #include<>.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Pavel Grunt <pgrunt@redhat.com>
When a client disconnects remove it from the list of clients connected
to the spice char-device.
This was caused by commit 1cec1c5118
("reds: Make VDIPortState a GObject") as the lifespan of RedCharDevice
was changed.
This could be reproduced with:
- start rhel7 machine
- connect remote viewer (RV)
- RV: login
- connect ssh
- SSH: stop agent
- disconnect RV
- SSH: start agent
- connect to RV
and caused (using address sanitizer):
main_channel_handle_parsed: agent start
=================================================================
==29592==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c00001cff0 at pc 0x7fa85b6e8595 bp 0x7ffde3801940 sp 0x7ffde3801930
READ of size 8 at 0x60c00001cff0 thread T0
#0 0x7fa85b6e8594 in red_client_get_main /home/freddy/work/spice-server/server/red-channel.c:2190
#1 0x7fa85b7311e6 in vdi_port_send_msg_to_client /home/freddy/work/spice-server/server/reds.c:880
#2 0x7fa85b69383e in red_char_device_send_msg_to_client /home/freddy/work/spice-server/server/char-device.c:138
#3 0x7fa85b69383e in red_char_device_send_msg_to_clients /home/freddy/work/spice-server/server/char-device.c:356
#4 0x7fa85b69383e in red_char_device_read_from_device /home/freddy/work/spice-server/server/char-device.c:403
#5 0x55a2633b81c1 (/usr/bin/qemu-system-x86_64+0x5561c1)
#6 0x55a2633afe7a (/usr/bin/qemu-system-x86_64+0x54de7a)
#7 0x55a2634cb7b1 (/usr/bin/qemu-system-x86_64+0x6697b1)
#8 0x55a2632078d0 (/usr/bin/qemu-system-x86_64+0x3a58d0)
#9 0x55a26379b2e8 (/usr/bin/qemu-system-x86_64+0x9392e8)
#10 0x55a26379a7a0 (/usr/bin/qemu-system-x86_64+0x9387a0)
#11 0x55a26313fb78 in main (/usr/bin/qemu-system-x86_64+0x2ddb78)
#12 0x7fa85a3cc57f in __libc_start_main (/lib64/libc.so.6+0x2057f)
#13 0x55a26314b0c8 (/usr/bin/qemu-system-x86_64+0x2e90c8)
0x60c00001cff0 is located 48 bytes inside of 128-byte region [0x60c00001cfc0,0x60c00001d040)
freed by thread T0 here:
#0 0x7fa869e3667a in __interceptor_free (/lib64/libasan.so.2+0x9867a)
#1 0x7fa85b6d75f7 in red_client_unref /home/freddy/work/spice-server/server/red-channel.c:2076
#2 0x7fa85b6ead74 in dispatcher_handle_single_read /home/freddy/work/spice-server/server/dispatcher.c:291
#3 0x7fa85b6ead74 in dispatcher_handle_recv_read /home/freddy/work/spice-server/server/dispatcher.c:314
#4 0x55a26379b2e8 (/usr/bin/qemu-system-x86_64+0x9392e8)
#5 0x55a26379a7a0 (/usr/bin/qemu-system-x86_64+0x9387a0)
#6 0x55a26313fb78 in main (/usr/bin/qemu-system-x86_64+0x2ddb78)
#7 0x7fa85a3cc57f in __libc_start_main (/lib64/libc.so.6+0x2057f)
previously allocated by thread T0 here:
#0 0x7fa869e36b19 in __interceptor_calloc (/lib64/libasan.so.2+0x98b19)
#1 0x7fa85b7d6858 in spice_malloc0 /home/freddy/work/spice-server/spice-common/common/mem.c:109
#2 0x7fa85b6e760c in red_client_new /home/freddy/work/spice-server/server/red-channel.c:2053
#3 0x7fa85b7449e4 in reds_handle_main_link /home/freddy/work/spice-server/server/reds.c:1762
#4 0x7fa85b7449e4 in reds_handle_link /home/freddy/work/spice-server/server/reds.c:2002
#5 0x7fa85b745d3a in reds_handle_ticket /home/freddy/work/spice-server/server/reds.c:2056
#6 0x55a26379b2e8 (/usr/bin/qemu-system-x86_64+0x9392e8)
#7 0x55a26379a7a0 (/usr/bin/qemu-system-x86_64+0x9387a0)
#8 0x55a26313fb78 in main (/usr/bin/qemu-system-x86_64+0x2ddb78)
#9 0x7fa85a3cc57f in __libc_start_main (/lib64/libc.so.6+0x2057f)
SUMMARY: AddressSanitizer: heap-use-after-free /home/freddy/work/spice-server/server/red-channel.c:2190 red_client_get_main
Shadow bytes around the buggy address:
0x0c187fffb9a0: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
0x0c187fffb9b0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c187fffb9c0: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
0x0c187fffb9d0: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
0x0c187fffb9e0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
=>0x0c187fffb9f0: fa fa fa fa fa fa fa fa fd fd fd fd fd fd[fd]fd
0x0c187fffba00: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
0x0c187fffba10: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c187fffba20: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
0x0c187fffba30: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
0x0c187fffba40: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Eduardo Lima (Etrunko) <etrunko@redhat.com>
Acked-by: Uri Lublin <uril@redhat.com>
This variable belongs to SpiceServerConfig rather than being a static
global variable hidden in sound.c
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
channels_info->num_of_channels is assigned, its value is not used, and
then it's assigned a different value. The first assignment can be
removed.
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
Instead of exporting 2 methods to get number of channels, and to fill
channel information, and use that from the main channel code, it's
better to do everything in one go in reds.c, and call that single method
from the main channel code.
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
This wraps/groups the various parameters that can be set by spice-server
users through the spice_server_set_xxx public API.
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
RedCharDevice implementation had to callback into reds.c in order to let
it know a char device was being destroyed. Now that RedCharDevice is a
gobject, a weak reference can be used instead allowing to remove that
coupling.
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
We can get 'reds' from the RedCharDevice accessible from the
SpiceCharDeviceInstance passed as an argument.
Acked-by: Pavel Grunt <pgrunt@redhat.com>
Acked-by: Frediano Ziglio <fziglio@redhat.com>
Now that all derived classes use a type deriving from PipeItem for their
RedCharDeviceMsgToClient, we can make this explicit in the
RedCharDeviceClass vfuncs, and remove the RedCharDeviceMsgToClient
typedef.
Since PipeItem is already refcounted, this allows to remove various
layers of ref/unref helpers from reds.c, and use the generic
pipe_item_{ref, unref} instead.
One more duplicate typedef, once in reds.c and another time in
reds-private.h
RedsState::agent_dev is defined in reds-private.h but only used in
reds.c, so longer term this could all be moved back to reds.c
This structure holding virtual function pointers was kept until now as a
RedCharDevice member in order to make the GObject conversion easier.
Now that all RedCharDevice children are converted to GObject, it can be
moved into RedCharDeviceClass.
VDIPortState and VDIReadBuf don't really need to be defined in a header
file as they are only used in reds.c
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
make the function names match the type names. So
spice_char_device_state_* becomes red_char_device_* and
spice_char_device_* also becomes red_char_device_*.
Acked-by: Frediano Ziglio <fziglio@redhat.com>
This is more consistent with internal type naming convention, and it
paves the way for a new char device GObject heirarchy
Acked-by: Frediano Ziglio <fziglio@redhat.com>
Rename the function to channel_supports_multiple_clients() as
channel_is_secondary() is unclear and was coded to return the opposite
of what was originally intended.
Also there are few channel types and whether they support multiple
clients is totally static so we might as well delegate the check to
the compiler.
Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
