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eis: error out if we're in the wrong state to start/stop emulating

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This commit is contained in:
Peter Hutterer 2023-02-21 08:47:19 +10:00
parent 83b4902d9f
commit 876e4044ab
1 changed files with 16 additions and 5 deletions
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21
src/libeis-device.c
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@ -223,44 +223,55 @@ client_msg_release(struct eis_device *device)
static struct brei_result *
client_msg_start_emulating(struct eis_device *device, uint32_t sequence)
{
struct brei_result *result = NULL;
DISCONNECT_IF_RECEIVER_CONTEXT(device);
switch (device->state) {
case EIS_DEVICE_STATE_DEAD:
case EIS_DEVICE_STATE_CLOSED_BY_CLIENT:
case EIS_DEVICE_STATE_NEW:
case EIS_DEVICE_STATE_PAUSED:
case EIS_DEVICE_STATE_EMULATING:
result = brei_result_new(EIS_CONNECTION_DISCONNECT_REASON_PROTOCOL,
"Invalid device state %ud for a start_emulating event", device->state);
break;
case EIS_DEVICE_STATE_RESUMED:
eis_queue_device_start_emulating_event(device, sequence);
device->state = EIS_DEVICE_STATE_EMULATING;
break;
case EIS_DEVICE_STATE_EMULATING:
case EIS_DEVICE_STATE_PAUSED:
/* race condition, that's fine */
break;
}
return 0;
return result;
}
static struct brei_result *
client_msg_stop_emulating(struct eis_device *device)
{
struct brei_result *result = NULL;
DISCONNECT_IF_RECEIVER_CONTEXT(device);
switch (device->state) {
case EIS_DEVICE_STATE_DEAD:
case EIS_DEVICE_STATE_CLOSED_BY_CLIENT:
case EIS_DEVICE_STATE_NEW:
case EIS_DEVICE_STATE_PAUSED:
case EIS_DEVICE_STATE_RESUMED:
result = brei_result_new(EIS_CONNECTION_DISCONNECT_REASON_PROTOCOL,
"Invalid device state %ud for a stop_emulating event", device->state);
break;
case EIS_DEVICE_STATE_EMULATING:
eis_queue_device_stop_emulating_event(device);
device->state = EIS_DEVICE_STATE_RESUMED;
break;
case EIS_DEVICE_STATE_PAUSED:
/* race condition, that's fine */
break;
}
return 0;
return result;
}
static struct brei_result *