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vnc: qemu ext keys

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This commit is contained in:
Devaev Maxim
2020-10-08 15:26:37 +03:00
parent f1910f7c8e
commit a0b920a9d6
7 changed files with 114 additions and 28 deletions
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22
kvmd/apps/vnc/rfb/__init__.py
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@@ -134,6 +134,9 @@ class RfbClient(RfbClientStream): # pylint: disable=too-many-instance-attribute
async def _on_key_event(self, code: int, state: bool) -> None:
raise NotImplementedError
async def _on_ext_key_event(self, code: int, state: bool) -> None:
raise NotImplementedError
async def _on_pointer_event(self, buttons: Dict[str, bool], wheel: Dict[str, int], move: Dict[str, int]) -> None:
raise NotImplementedError
@@ -360,6 +363,7 @@ class RfbClient(RfbClientStream): # pylint: disable=too-many-instance-attribute
4: self.__handle_key_event,
5: self.__handle_pointer_event,
6: self.__handle_client_cut_text,
255: self.__handle_qemu_event,
}
while True:
msg_type = await self._read_number("B")
@@ -380,9 +384,12 @@ class RfbClient(RfbClientStream): # pylint: disable=too-many-instance-attribute
if encodings_count > 1024:
raise RfbError(f"Too many encodings: {encodings_count}")
self._encodings = RfbClientEncodings(frozenset(await self._read_struct("l" * encodings_count)))
get_logger(0).info("[main] %s: Features: resize=%d; rename=%d; leds=%d",
self._remote, self._encodings.has_resize, self._encodings.has_rename, self._encodings.has_leds_state)
get_logger(0).info("[main] %s: Features: resize=%d, rename=%d, leds=%d, extkeys=%d",
self._remote, self._encodings.has_resize, self._encodings.has_rename,
self._encodings.has_leds_state, self._encodings.has_ext_keys)
self.__check_tight_jpeg()
if self._encodings.has_ext_keys: # Preferred method
await self._write_fb_update(0, 0, RfbEncodings.EXT_KEYS, drain=True)
await self._on_set_encodings()
async def __handle_fb_update_request(self) -> None:
@@ -417,6 +424,17 @@ class RfbClient(RfbClientStream): # pylint: disable=too-many-instance-attribute
text = await self._read_text(length)
await self._on_cut_event(text)
async def __handle_qemu_event(self) -> None:
(sub_type, state, code) = await self._read_struct("B H xxxx L")
if sub_type != 0:
raise RfbError(f"Invalid QEMU sub-message type: {sub_type}")
if code == 0xB7:
# For backwards compatibility servers SHOULD accept 0xB7 as a synonym for 0x54 (PrintScreen)
code = 0x54
if code & 0x80:
code = (0xE0 << 8) | (code & ~0x80)
await self._on_ext_key_event(code, bool(state))
def __check_tight_jpeg(self) -> None:
# JpegCompression may only be used when the client has advertized
# a quality level using the JPEG Quality Level Pseudo-encoding