static gboolean
gum_kernel_scan_context_emit_match (GumAddress address,
gsize size,
GumKernelScanContext * self)
{
GumDukCore * core = self->core;
GumDukScope scope;
duk_context * ctx;
gboolean proceed;
ctx = _gum_duk_scope_enter (&scope, core);
duk_push_heapptr (ctx, self->on_match);
_gum_duk_push_uint64 (ctx, address, core);
duk_push_number (ctx, size);
proceed = TRUE;
if (_gum_duk_scope_call (&scope, 2))
{
if (duk_is_string (ctx, -1))
proceed = strcmp (duk_require_string (ctx, -1), "stop") != 0;
}
duk_pop (ctx);
_gum_duk_scope_leave (&scope);
return proceed;
}
static gboolean
gum_duk_exception_handler_on_exception (GumExceptionDetails * details,
gpointer user_data)
{
GumDukExceptionHandler * handler = user_data;
GumDukCore * core = handler->core;
GumDukScope scope;
duk_context * ctx;
GumDukCpuContext * cpu_context;
gboolean handled = FALSE;
ctx = _gum_duk_scope_enter (&scope, core);
_gum_duk_push_exception_details (ctx, details, core, &cpu_context);
duk_push_heapptr (ctx, handler->callback);
duk_dup (ctx, -2);
if (_gum_duk_scope_call (&scope, 1))
{
if (duk_is_boolean (ctx, -1))
handled = duk_require_boolean (ctx, -1);
}
_gum_duk_cpu_context_make_read_only (cpu_context);
duk_pop_2 (ctx);
_gum_duk_scope_leave (&scope);
return handled;
}
static void
gum_duk_invocation_listener_dispose (GumDukInvocationListener * self)
{
GumDukCore * core = self->module->core;
GumDukScope scope;
_gum_duk_scope_enter (&scope, core);
_gum_duk_release_heapptr (self->ctx, self->object);
_gum_duk_scope_leave (&scope);
}
static void
gum_duk_invocation_listener_on_enter (GumInvocationListener * listener,
GumInvocationContext * ic)
{
GumDukInvocationListener * self = GUM_DUK_INVOCATION_LISTENER_CAST (listener);
if (gum_script_backend_is_ignoring (
gum_invocation_context_get_thread_id (ic)))
return;
if (self->on_enter != NULL)
{
GumDukInterceptor * module = self->module;
GumDukCore * core = module->core;
duk_context * ctx = core->ctx;
GumDukScope scope;
GumDukInvocationContext * jic;
GumDukInvocationArgs * args;
_gum_duk_scope_enter (&scope, core);
jic = _gum_duk_interceptor_obtain_invocation_context (module);
_gum_duk_invocation_context_reset (jic, ic);
args = gum_duk_interceptor_obtain_invocation_args (module);
gum_duk_invocation_args_reset (args, ic);
duk_push_heapptr (ctx, self->on_enter);
duk_push_heapptr (ctx, jic->object);
duk_push_heapptr (ctx, args->object);
_gum_duk_scope_call_method (&scope, 1);
duk_pop (ctx);
gum_duk_invocation_args_reset (args, NULL);
gum_duk_interceptor_release_invocation_args (module, args);
_gum_duk_invocation_context_reset (jic, NULL);
if (self->on_leave != NULL)
{
*GUM_LINCTX_GET_FUNC_INVDATA (ic, GumDukHeapPtr) = jic;
}
else
{
_gum_duk_interceptor_release_invocation_context (module, jic);
}
_gum_duk_scope_leave (&scope);
}
}
static void
gum_duk_invocation_listener_on_leave (GumInvocationListener * listener,
GumInvocationContext * ic)
{
GumDukInvocationListener * self = GUM_DUK_INVOCATION_LISTENER_CAST (listener);
if (gum_script_backend_is_ignoring (
gum_invocation_context_get_thread_id (ic)))
return;
if (self->on_leave != NULL)
{
GumDukInterceptor * module = self->module;
GumDukCore * core = module->core;
duk_context * ctx = core->ctx;
GumDukScope scope;
GumDukInvocationContext * jic;
GumDukInvocationReturnValue * retval;
_gum_duk_scope_enter (&scope, core);
jic = (self->on_enter != NULL)
? *GUM_LINCTX_GET_FUNC_INVDATA (ic, GumDukInvocationContext *)
: NULL;
if (jic == NULL)
{
jic = _gum_duk_interceptor_obtain_invocation_context (module);
}
_gum_duk_invocation_context_reset (jic, ic);
retval = gum_duk_interceptor_obtain_invocation_return_value (module);
gum_duk_invocation_return_value_reset (retval, ic);
duk_push_heapptr (ctx, self->on_leave);
duk_push_heapptr (ctx, jic->object);
duk_push_heapptr (ctx, retval->object);
_gum_duk_scope_call_method (&scope, 1);
duk_pop (ctx);
gum_duk_invocation_return_value_reset (retval, NULL);
gum_duk_interceptor_release_invocation_return_value (module, retval);
_gum_duk_invocation_context_reset (jic, NULL);
_gum_duk_interceptor_release_invocation_context (module, jic);
_gum_duk_scope_leave (&scope);
}
static void
gum_kernel_scan_context_run (GumKernelScanContext * self)
{
GumDukCore * core = self->core;
GumDukScope script_scope;
duk_context * ctx;
gum_kernel_scan (&self->range, self->pattern,
(GumMemoryScanMatchFunc) gum_kernel_scan_context_emit_match, self);
ctx = _gum_duk_scope_enter (&script_scope, core);
duk_push_heapptr (ctx, self->on_complete);
_gum_duk_scope_call (&script_scope, 0);
duk_pop (ctx);
_gum_duk_scope_leave (&script_scope);
}
static void
gum_kernel_scan_context_free (GumKernelScanContext * self)
{
GumDukCore * core = self->core;
GumDukScope scope;
duk_context * ctx;
ctx = _gum_duk_scope_enter (&scope, core);
_gum_duk_unprotect (ctx, self->on_match);
if (self->on_error != NULL)
_gum_duk_unprotect (ctx, self->on_error);
_gum_duk_unprotect (ctx, self->on_complete);
_gum_duk_core_unpin (core);
_gum_duk_scope_leave (&scope);
gum_match_pattern_free (self->pattern);
g_slice_free (GumKernelScanContext, self);
}