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ssm: Catch more errors in FpiSsm without crashing

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Benjamin Berg 2021-01-26 15:10:11 +01:00 committed by Marco Trevisan
parent c4069065f9
commit 8d21a9c27c
1 changed files with 25 additions and 0 deletions
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25
libfprint/fpi-ssm.c
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@ -130,6 +130,7 @@ fpi_ssm_new_full (FpDevice *dev,
{
FpiSsm *machine;
BUG_ON (dev == NULL);
BUG_ON (nr_states < 1);
BUG_ON (handler == NULL);
@ -155,6 +156,8 @@ fpi_ssm_set_data (FpiSsm *machine,
gpointer ssm_data,
GDestroyNotify ssm_data_destroy)
{
g_return_if_fail (machine);
if (machine->ssm_data_destroy && machine->ssm_data)
machine->ssm_data_destroy (machine->ssm_data);
@ -173,12 +176,16 @@ fpi_ssm_set_data (FpiSsm *machine,
void *
fpi_ssm_get_data (FpiSsm *machine)
{
g_return_val_if_fail (machine, NULL);
return machine->ssm_data;
}
static void
fpi_ssm_clear_delayed_action (FpiSsm *machine)
{
g_return_if_fail (machine);
if (machine->cancellable_id)
{
g_cancellable_disconnect (machine->cancellable, machine->cancellable_id);
@ -235,6 +242,8 @@ fpi_ssm_set_delayed_action_timeout (FpiSsm *machine,
gpointer user_data,
GDestroyNotify destroy_func)
{
g_return_if_fail (machine);
BUG_ON (machine->completed);
BUG_ON (machine->timeout != NULL);
@ -302,6 +311,8 @@ __ssm_call_handler (FpiSsm *machine)
void
fpi_ssm_start (FpiSsm *ssm, FpiSsmCompletedCallback callback)
{
g_return_if_fail (ssm != NULL);
BUG_ON (!ssm->completed);
ssm->callback = callback;
ssm->cur_state = 0;
@ -336,6 +347,9 @@ __subsm_complete (FpiSsm *ssm, FpDevice *_dev, GError *error)
void
fpi_ssm_start_subsm (FpiSsm *parent, FpiSsm *child)
{
g_return_if_fail (parent != NULL);
g_return_if_fail (child != NULL);
BUG_ON (parent->timeout);
child->parentsm = parent;
@ -355,6 +369,8 @@ fpi_ssm_start_subsm (FpiSsm *parent, FpiSsm *child)
void
fpi_ssm_mark_completed (FpiSsm *machine)
{
g_return_if_fail (machine != NULL);
BUG_ON (machine->completed);
BUG_ON (machine->timeout != NULL);
@ -427,6 +443,7 @@ fpi_ssm_mark_completed_delayed (FpiSsm *machine,
void
fpi_ssm_mark_failed (FpiSsm *machine, GError *error)
{
g_return_if_fail (machine != NULL);
g_assert (error);
if (machine->error)
{
@ -534,6 +551,8 @@ fpi_ssm_next_state_delayed (FpiSsm *machine,
void
fpi_ssm_jump_to_state (FpiSsm *machine, int state)
{
g_return_if_fail (machine != NULL);
BUG_ON (machine->completed);
BUG_ON (state < 0 || state >= machine->nr_states);
BUG_ON (machine->timeout != NULL);
@ -610,6 +629,8 @@ fpi_ssm_jump_to_state_delayed (FpiSsm *machine,
int
fpi_ssm_get_cur_state (FpiSsm *machine)
{
g_return_val_if_fail (machine != NULL, 0);
return machine->cur_state;
}
@ -624,6 +645,8 @@ fpi_ssm_get_cur_state (FpiSsm *machine)
GError *
fpi_ssm_get_error (FpiSsm *machine)
{
g_return_val_if_fail (machine != NULL, NULL);
return machine->error;
}
@ -638,6 +661,8 @@ fpi_ssm_get_error (FpiSsm *machine)
GError *
fpi_ssm_dup_error (FpiSsm *machine)
{
g_return_val_if_fail (machine != NULL, NULL);
if (machine->error)
return g_error_copy (machine->error);