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feat: hid rpc channel (#755)

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* feat: use hidRpcChannel to save bandwidth

* chore: simplify handshake of hid rpc

* add logs

* chore: add timeout when writing to hid endpoints

* fix issues

* chore: show hid rpc version

* refactor hidrpc marshal / unmarshal

* add queues for keyboard / mouse event

* chore: change logging level of JSONRPC send event to trace

* minor changes related to logging

* fix: nil check

* chore: add comments and remove unused code

* add useMouse

* chore: log msg data only when debug or trace mode

* chore: make tslint happy

* chore: unlock keyboardStateLock before calling onKeysDownChange

* chore: remove keyPressReportApiAvailable

* chore: change version handle

* chore: clean up unused functions

* remove comments
This commit is contained in:
Aveline
2025-09-04 22:27:56 +02:00
committed by GitHub
parent e8ef82e582
commit bcc307b147
21 changed files with 1292 additions and 216 deletions
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32
internal/usbgadget/hid_keyboard.go
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@@ -86,6 +86,12 @@ type KeyboardState struct {
Compose bool `json:"compose"`
Kana bool `json:"kana"`
Shift bool `json:"shift"` // This is not part of the main USB HID spec
raw byte
}
// Byte returns the raw byte representation of the keyboard state.
func (k *KeyboardState) Byte() byte {
return k.raw
}
func getKeyboardState(b byte) KeyboardState {
@@ -97,6 +103,7 @@ func getKeyboardState(b byte) KeyboardState {
Compose: b&KeyboardLedMaskCompose != 0,
Kana: b&KeyboardLedMaskKana != 0,
Shift: b&KeyboardLedMaskShift != 0,
raw: b,
}
}
@@ -139,19 +146,26 @@ func (u *UsbGadget) GetKeysDownState() KeysDownState {
}
func (u *UsbGadget) updateKeyDownState(state KeysDownState) {
u.keyboardStateLock.Lock()
defer u.keyboardStateLock.Unlock()
u.log.Trace().Interface("old", u.keysDownState).Interface("new", state).Msg("acquiring keyboardStateLock for updateKeyDownState")
if u.keysDownState.Modifier == state.Modifier &&
bytes.Equal(u.keysDownState.Keys, state.Keys) {
return // No change in key down state
// this is intentional to unlock keyboard state lock before onKeysDownChange callback
{
u.keyboardStateLock.Lock()
defer u.keyboardStateLock.Unlock()
if u.keysDownState.Modifier == state.Modifier &&
bytes.Equal(u.keysDownState.Keys, state.Keys) {
return // No change in key down state
}
u.log.Trace().Interface("old", u.keysDownState).Interface("new", state).Msg("keysDownState updated")
u.keysDownState = state
}
u.log.Trace().Interface("old", u.keysDownState).Interface("new", state).Msg("keysDownState updated")
u.keysDownState = state
if u.onKeysDownChange != nil {
u.log.Trace().Interface("state", state).Msg("calling onKeysDownChange")
(*u.onKeysDownChange)(state)
u.log.Trace().Interface("state", state).Msg("onKeysDownChange called")
}
}
@@ -233,7 +247,7 @@ func (u *UsbGadget) keyboardWriteHidFile(modifier byte, keys []byte) error {
return err
}
_, err := u.keyboardHidFile.Write(append([]byte{modifier, 0x00}, keys[:hidKeyBufferSize]...))
_, err := u.writeWithTimeout(u.keyboardHidFile, append([]byte{modifier, 0x00}, keys[:hidKeyBufferSize]...))
if err != nil {
u.logWithSuppression("keyboardWriteHidFile", 100, u.log, err, "failed to write to hidg0")
u.keyboardHidFile.Close()