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ei: error out if we're in the wrong device state for emulating

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This commit is contained in:
Peter Hutterer 2023-02-21 08:38:08 +10:00
parent d698ed2f75
commit 83b4902d9f
1 changed files with 14 additions and 4 deletions
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18
src/libei-device.c
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@ -277,6 +277,8 @@ handle_msg_paused(struct ei_device *device)
static struct brei_result *
handle_msg_start_emulating(struct ei_device *device, uint32_t sequence)
{
struct brei_result *result = NULL;
DISCONNECT_IF_SENDER_CONTEXT(device);
switch (device->state) {
@ -284,22 +286,27 @@ handle_msg_start_emulating(struct ei_device *device, uint32_t sequence)
case EI_DEVICE_STATE_NEW:
case EI_DEVICE_STATE_PAUSED:
case EI_DEVICE_STATE_EMULATING:
case EI_DEVICE_STATE_REMOVED_FROM_SERVER:
result = brei_result_new(EI_CONNECTION_DISCONNECT_REASON_PROTOCOL,
"Invalid device state %ud for a start_emulating event", device->state);
break;
case EI_DEVICE_STATE_RESUMED:
ei_queue_device_start_emulating_event(device, sequence);
device->state = EI_DEVICE_STATE_EMULATING;
break;
case EI_DEVICE_STATE_REMOVED_FROM_CLIENT:
case EI_DEVICE_STATE_REMOVED_FROM_SERVER:
/* race condition, that's fine */
break;
}
return NULL;
return result;
}
static struct brei_result *
handle_msg_stop_emulating(struct ei_device *device)
{
struct brei_result *result = NULL;
DISCONNECT_IF_SENDER_CONTEXT(device);
switch (device->state) {
@ -307,17 +314,20 @@ handle_msg_stop_emulating(struct ei_device *device)
case EI_DEVICE_STATE_NEW:
case EI_DEVICE_STATE_PAUSED:
case EI_DEVICE_STATE_RESUMED:
case EI_DEVICE_STATE_REMOVED_FROM_SERVER:
result = brei_result_new(EI_CONNECTION_DISCONNECT_REASON_PROTOCOL,
"Invalid device state %ud for a stop_emulating event", device->state);
break;
case EI_DEVICE_STATE_EMULATING:
ei_queue_device_stop_emulating_event(device);
device->state = EI_DEVICE_STATE_RESUMED;
break;
case EI_DEVICE_STATE_REMOVED_FROM_CLIENT:
case EI_DEVICE_STATE_REMOVED_FROM_SERVER:
/* race condition, that's fine */
break;
}
return NULL;
return result;
}
static struct brei_result *