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/*
* cominterop.c: COM Interop Support
*
*
* (C) 2002 Ximian, Inc. http://www.ximian.com
*
*/
#include "config.h"
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include "object.h"
#include "loader.h"
#include "cil-coff.h"
#include "metadata/abi-details.h"
#include "metadata/cominterop.h"
#include "metadata/marshal.h"
#include "metadata/method-builder.h"
#include "metadata/tabledefs.h"
#include "metadata/exception.h"
#include "metadata/appdomain.h"
#include "metadata/reflection-internals.h"
#include "mono/metadata/debug-helpers.h"
#include "mono/metadata/threads.h"
#include "mono/metadata/monitor.h"
#include "mono/metadata/metadata-internals.h"
#include "mono/metadata/domain-internals.h"
#include "mono/metadata/gc-internals.h"
#include "mono/metadata/threads-types.h"
#include "mono/metadata/string-icalls.h"
#include "mono/metadata/attrdefs.h"
#include "mono/metadata/gc-internals.h"
#include "mono/utils/mono-counters.h"
#include "mono/utils/strenc.h"
#include "mono/utils/atomic.h"
#include "mono/utils/mono-error.h"
#include "mono/utils/mono-error-internals.h"
#include <string.h>
#include <errno.h>
/*
Code shared between the DISABLE_COM and !DISABLE_COM
*/
static void
register_icall (gpointer func, const char *name, const char *sigstr, gboolean save)
{
MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
mono_register_jit_icall (func, name, sig, save);
}
gpointer
mono_string_to_bstr(MonoString* ptr)
{
if (!ptr)
return NULL;
return mono_ptr_to_bstr(mono_string_chars(ptr), mono_string_length(ptr));
}
#ifndef DISABLE_COM
#define OPDEF(a,b,c,d,e,f,g,h,i,j) \
a = i,
typedef enum {
MONO_MARSHAL_NONE, /* No marshalling needed */
MONO_MARSHAL_COPY, /* Can be copied by value to the new domain */
MONO_MARSHAL_COPY_OUT, /* out parameter that needs to be copied back to the original instance */
MONO_MARSHAL_SERIALIZE /* Value needs to be serialized into the new domain */
} MonoXDomainMarshalType;
typedef enum {
MONO_COM_DEFAULT,
MONO_COM_MS
} MonoCOMProvider;
static MonoCOMProvider com_provider = MONO_COM_DEFAULT;
enum {
#include "mono/cil/opcode.def"
LAST = 0xff
};
#undef OPDEF
/* This mutex protects the various cominterop related caches in MonoImage */
#define mono_cominterop_lock() mono_os_mutex_lock (&cominterop_mutex)
#define mono_cominterop_unlock() mono_os_mutex_unlock (&cominterop_mutex)
static mono_mutex_t cominterop_mutex;
/* STDCALL on windows, CDECL everywhere else to work with XPCOM and MainWin COM */
#ifdef HOST_WIN32
#define STDCALL __stdcall
#else
#define STDCALL
#endif
GENERATE_GET_CLASS_WITH_CACHE (interop_proxy, Mono.Interop, ComInteropProxy)
GENERATE_GET_CLASS_WITH_CACHE (idispatch, Mono.Interop, IDispatch)
GENERATE_GET_CLASS_WITH_CACHE (iunknown, Mono.Interop, IUnknown)
GENERATE_GET_CLASS_WITH_CACHE (com_object, System, __ComObject)
GENERATE_GET_CLASS_WITH_CACHE (variant, System, Variant)
static GENERATE_GET_CLASS_WITH_CACHE (interface_type_attribute, System.Runtime.InteropServices, InterfaceTypeAttribute)
static GENERATE_GET_CLASS_WITH_CACHE (guid_attribute, System.Runtime.InteropServices, GuidAttribute)
/* Upon creation of a CCW, only allocate a weak handle and set the
* reference count to 0. If the unmanaged client code decides to addref and
* hold onto the CCW, I then allocate a strong handle. Once the reference count
* goes back to 0, convert back to a weak handle.
*/
typedef struct {
guint32 ref_count;
guint32 gc_handle;
GHashTable* vtable_hash;
#ifdef HOST_WIN32
gpointer free_marshaler;
#endif
} MonoCCW;
/* This type is the actual pointer passed to unmanaged code
* to represent a COM interface.
*/
typedef struct {
gpointer vtable;
MonoCCW* ccw;
} MonoCCWInterface;
/* IUnknown */
static int STDCALL cominterop_ccw_addref (MonoCCWInterface* ccwe);
static int STDCALL cominterop_ccw_release (MonoCCWInterface* ccwe);
static int STDCALL cominterop_ccw_queryinterface (MonoCCWInterface* ccwe, guint8* riid, gpointer* ppv);
/* IDispatch */
static int STDCALL cominterop_ccw_get_type_info_count (MonoCCWInterface* ccwe, guint32 *pctinfo);
static int STDCALL cominterop_ccw_get_type_info (MonoCCWInterface* ccwe, guint32 iTInfo, guint32 lcid, gpointer *ppTInfo);
static int STDCALL cominterop_ccw_get_ids_of_names (MonoCCWInterface* ccwe, gpointer riid,
gunichar2** rgszNames, guint32 cNames,
guint32 lcid, gint32 *rgDispId);
static int STDCALL cominterop_ccw_invoke (MonoCCWInterface* ccwe, guint32 dispIdMember,
gpointer riid, guint32 lcid,
guint16 wFlags, gpointer pDispParams,
gpointer pVarResult, gpointer pExcepInfo,
guint32 *puArgErr);
static MonoMethod *
cominterop_get_managed_wrapper_adjusted (MonoMethod *method);
static gpointer
cominterop_get_ccw (MonoObject* object, MonoClass* itf);
static gpointer
cominterop_get_ccw_checked (MonoObject *object, MonoClass *itf, MonoError *error);
static MonoObject*
cominterop_get_ccw_object (MonoCCWInterface* ccw_entry, gboolean verify);
/* SAFEARRAY marshalling */
static gboolean
mono_marshal_safearray_begin (gpointer safearray, MonoArray **result, gpointer *indices, gpointer empty, gpointer parameter, gboolean allocateNewArray);
static gpointer
mono_marshal_safearray_get_value (gpointer safearray, gpointer indices);
static gboolean
mono_marshal_safearray_next (gpointer safearray, gpointer indices);
static void
mono_marshal_safearray_end (gpointer safearray, gpointer indices);
static gboolean
mono_marshal_safearray_create (MonoArray *input, gpointer *newsafearray, gpointer *indices, gpointer empty);
static void
mono_marshal_safearray_set_value (gpointer safearray, gpointer indices, gpointer value);
static void
mono_marshal_safearray_free_indices (gpointer indices);
MonoClass*
mono_class_try_get_com_object_class (void)
{
static MonoClass *tmp_class;
static gboolean inited;
MonoClass *klass;
if (!inited) {
klass = mono_class_load_from_name (mono_defaults.corlib, "System", "__ComObject");
mono_memory_barrier ();
tmp_class = klass;
mono_memory_barrier ();
inited = TRUE;
}
return tmp_class;
}
/**
* cominterop_method_signature:
* @method: a method
*
* Returns: the corresponding unmanaged method signature for a managed COM
* method.
*/
static MonoMethodSignature*
cominterop_method_signature (MonoMethod* method)
{
MonoMethodSignature *res;
MonoImage *image = method->klass->image;
MonoMethodSignature *sig = mono_method_signature (method);
gboolean preserve_sig = method->iflags & METHOD_IMPL_ATTRIBUTE_PRESERVE_SIG;
int sigsize;
int i;
int param_count = sig->param_count + 1; // convert this arg into IntPtr arg
if (!preserve_sig &&!MONO_TYPE_IS_VOID (sig->ret))
param_count++;
res = mono_metadata_signature_alloc (image, param_count);
sigsize = MONO_SIZEOF_METHOD_SIGNATURE + sig->param_count * sizeof (MonoType *);
memcpy (res, sig, sigsize);
// now move args forward one
for (i = sig->param_count-1; i >= 0; i--)
res->params[i+1] = sig->params[i];
// first arg is interface pointer
res->params[0] = &mono_defaults.int_class->byval_arg;
if (preserve_sig) {
res->ret = sig->ret;
}
else {
// last arg is return type
if (!MONO_TYPE_IS_VOID (sig->ret)) {
res->params[param_count-1] = mono_metadata_type_dup (image, sig->ret);
res->params[param_count-1]->byref = 1;
res->params[param_count-1]->attrs = PARAM_ATTRIBUTE_OUT;
}
// return type is always int32 (HRESULT)
res->ret = &mono_defaults.int32_class->byval_arg;
}
// no pinvoke
res->pinvoke = FALSE;
// no hasthis
res->hasthis = 0;
// set param_count
res->param_count = param_count;
// STDCALL on windows, CDECL everywhere else to work with XPCOM and MainWin COM
#ifdef HOST_WIN32
res->call_convention = MONO_CALL_STDCALL;
#else
res->call_convention = MONO_CALL_C;
#endif
return res;
}
/**
* cominterop_get_function_pointer:
* @itf: a pointer to the COM interface
* @slot: the vtable slot of the method pointer to return
*
* Returns: the unmanaged vtable function pointer from the interface
*/
static gpointer
cominterop_get_function_pointer (gpointer itf, int slot)
{
gpointer func;
func = *((*(gpointer**)itf)+slot);
return func;
}
/**
* cominterop_object_is_com_object:
* @obj: a pointer to the object
*
* Returns: a value indicating if the object is a
* Runtime Callable Wrapper (RCW) for a COM object
*/
static gboolean
cominterop_object_is_rcw (MonoObject *obj)
{
MonoClass *klass = NULL;
MonoRealProxy* real_proxy = NULL;
if (!obj)
return FALSE;
klass = mono_object_class (obj);
if (!mono_class_is_transparent_proxy (klass))
return FALSE;
real_proxy = ((MonoTransparentProxy*)obj)->rp;
if (!real_proxy)
return FALSE;
klass = mono_object_class (real_proxy);
return (klass && klass == mono_class_get_interop_proxy_class ());
}
static int
cominterop_get_com_slot_begin (MonoClass* klass)
{
MonoError error;
MonoCustomAttrInfo *cinfo = NULL;
MonoInterfaceTypeAttribute* itf_attr = NULL;
cinfo = mono_custom_attrs_from_class_checked (klass, &error);
mono_error_assert_ok (&error);
if (cinfo) {
itf_attr = (MonoInterfaceTypeAttribute*)mono_custom_attrs_get_attr_checked (cinfo, mono_class_get_interface_type_attribute_class (), &error);
g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
if (!cinfo->cached)
mono_custom_attrs_free (cinfo);
}
if (itf_attr && itf_attr->intType == 1)
return 3; /* 3 methods in IUnknown*/
else
return 7; /* 7 methods in IDispatch*/
}
/**
* cominterop_get_method_interface:
* @method: method being called
*
* Returns: the MonoClass* representing the interface on which
* the method is defined.
*/
static MonoClass*
cominterop_get_method_interface (MonoMethod* method)
{
MonoError error;
MonoClass *ic = method->klass;
/* if method is on a class, we need to look up interface method exists on */
if (!MONO_CLASS_IS_INTERFACE(method->klass)) {
GPtrArray *ifaces = mono_class_get_implemented_interfaces (method->klass, &error);
g_assert (mono_error_ok (&error));
if (ifaces) {
int i;
mono_class_setup_vtable (method->klass);
for (i = 0; i < ifaces->len; ++i) {
int j, offset;
gboolean found = FALSE;
ic = (MonoClass *)g_ptr_array_index (ifaces, i);
offset = mono_class_interface_offset (method->klass, ic);
for (j = 0; j < ic->method.count; ++j) {
if (method->klass->vtable [j + offset] == method) {
found = TRUE;
break;
}
}
if (found)
break;
ic = NULL;
}
g_ptr_array_free (ifaces, TRUE);
}
}
if (!ic)
g_assert (ic);
g_assert (MONO_CLASS_IS_INTERFACE (ic));
return ic;
}
/**
* cominterop_get_com_slot_for_method:
* @method: a method
*
* Returns: the method's slot in the COM interface vtable
*/
static int
cominterop_get_com_slot_for_method (MonoMethod* method)
{
guint32 slot = method->slot;
MonoClass *ic = method->klass;
/* if method is on a class, we need to look up interface method exists on */
if (!MONO_CLASS_IS_INTERFACE(ic)) {
int offset = 0;
int i = 0;
ic = cominterop_get_method_interface (method);
offset = mono_class_interface_offset (method->klass, ic);
g_assert(offset >= 0);
for(i = 0; i < ic->method.count; ++i) {
if (method->klass->vtable [i + offset] == method)
{
slot = ic->methods[i]->slot;
break;
}
}
}
g_assert (ic);
g_assert (MONO_CLASS_IS_INTERFACE (ic));
return slot + cominterop_get_com_slot_begin (ic);
}
static void
cominterop_mono_string_to_guid (MonoString* string, guint8 *guid);
static gboolean
cominterop_class_guid (MonoClass* klass, guint8* guid)
{
MonoError error;
MonoCustomAttrInfo *cinfo;
cinfo = mono_custom_attrs_from_class_checked (klass, &error);
mono_error_assert_ok (&error);
if (cinfo) {
MonoReflectionGuidAttribute *attr = (MonoReflectionGuidAttribute*)mono_custom_attrs_get_attr_checked (cinfo, mono_class_get_guid_attribute_class (), &error);
g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
if (!attr)
return FALSE;
if (!cinfo->cached)
mono_custom_attrs_free (cinfo);
cominterop_mono_string_to_guid (attr->guid, guid);
return TRUE;
}
return FALSE;
}
static gboolean
cominterop_com_visible (MonoClass* klass)
{
MonoError error;
MonoCustomAttrInfo *cinfo;
GPtrArray *ifaces;
MonoBoolean visible = 1;
cinfo = mono_custom_attrs_from_class_checked (klass, &error);
mono_error_assert_ok (&error);
if (cinfo) {
MonoReflectionComVisibleAttribute *attr = (MonoReflectionComVisibleAttribute*)mono_custom_attrs_get_attr_checked (cinfo, mono_class_get_guid_attribute_class (), &error);
g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/
if (attr)
visible = attr->visible;
if (!cinfo->cached)
mono_custom_attrs_free (cinfo);
if (visible)
return TRUE;
}
ifaces = mono_class_get_implemented_interfaces (klass, &error);
g_assert (mono_error_ok (&error));
if (ifaces) {
int i;
for (i = 0; i < ifaces->len; ++i) {
MonoClass *ic = NULL;
ic = (MonoClass *)g_ptr_array_index (ifaces, i);
if (MONO_CLASS_IS_IMPORT (ic))
visible = TRUE;
}
g_ptr_array_free (ifaces, TRUE);
}
return visible;
}
static void cominterop_set_hr_error (MonoError *oerror, int hr)
{
static MonoMethod* throw_exception_for_hr = NULL;
MonoError error;
MonoException* ex;
void* params[1] = {&hr};
if (!throw_exception_for_hr)
throw_exception_for_hr = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetExceptionForHR", 1);
ex = (MonoException*)mono_runtime_invoke_checked (throw_exception_for_hr, NULL, params, &error);
mono_error_assert_ok (&error);
mono_error_set_exception_instance (oerror, ex);
}
/**
* cominterop_get_interface_checked:
* @obj: managed wrapper object containing COM object
* @ic: interface type to retrieve for COM object
* @error: set on error
*
* Returns: the COM interface requested. On failure returns NULL and sets @error
*/
static gpointer
cominterop_get_interface_checked (MonoComObject* obj, MonoClass* ic, MonoError *error)
{
gpointer itf = NULL;
g_assert (ic);
g_assert (MONO_CLASS_IS_INTERFACE (ic));
mono_error_init (error);
mono_cominterop_lock ();
if (obj->itf_hash)
itf = g_hash_table_lookup (obj->itf_hash, GUINT_TO_POINTER ((guint)ic->interface_id));
mono_cominterop_unlock ();
if (!itf) {
guint8 iid [16];
int found = cominterop_class_guid (ic, iid);
int hr;
g_assert(found);
hr = ves_icall_System_Runtime_InteropServices_Marshal_QueryInterfaceInternal (obj->iunknown, iid, &itf);
if (hr < 0) {
cominterop_set_hr_error (error, hr);
}
if (hr >= 0 && itf) {
mono_cominterop_lock ();
if (!obj->itf_hash)
obj->itf_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
g_hash_table_insert (obj->itf_hash, GUINT_TO_POINTER ((guint)ic->interface_id), itf);
mono_cominterop_unlock ();
}
}
return itf;
}
/**
* cominterop_get_interface:
* @obj: managed wrapper object containing COM object
* @ic: interface type to retrieve for COM object
*
* Returns: the COM interface requested
*/
static gpointer
cominterop_get_interface (MonoComObject *obj, MonoClass *ic, gboolean throw_exception)
{
MonoError error;
gpointer itf = cominterop_get_interface_checked (obj, ic, &error);
if (!is_ok (&error)) {
if (throw_exception) {
mono_error_set_pending_exception (&error);
return NULL;
} else {
mono_error_cleanup (&error);
}
}
if (throw_exception)
g_assert (itf);
return itf;
}
static int
cominterop_get_hresult_for_exception (MonoException* exc)
{
int hr = 0;
return hr;
}
static MonoReflectionType *
cominterop_type_from_handle (MonoType *handle)
{
MonoError error;
MonoReflectionType *ret;
MonoDomain *domain = mono_domain_get ();
MonoClass *klass = mono_class_from_mono_type (handle);
mono_class_init (klass);
ret = mono_type_get_object_checked (domain, handle, &error);
mono_error_set_pending_exception (&error);
return ret;
}
void
mono_cominterop_init (void)
{
const char* com_provider_env;
mono_os_mutex_init_recursive (&cominterop_mutex);
com_provider_env = g_getenv ("MONO_COM");
if (com_provider_env && !strcmp(com_provider_env, "MS"))
com_provider = MONO_COM_MS;
register_icall (cominterop_get_method_interface, "cominterop_get_method_interface", "ptr ptr", FALSE);
register_icall (cominterop_get_function_pointer, "cominterop_get_function_pointer", "ptr ptr int32", FALSE);
register_icall (cominterop_object_is_rcw, "cominterop_object_is_rcw", "int32 object", FALSE);
register_icall (cominterop_get_ccw, "cominterop_get_ccw", "ptr object ptr", FALSE);
register_icall (cominterop_get_ccw_object, "cominterop_get_ccw_object", "object ptr int32", FALSE);
register_icall (cominterop_get_hresult_for_exception, "cominterop_get_hresult_for_exception", "int32 object", FALSE);
register_icall (cominterop_get_interface, "cominterop_get_interface", "ptr object ptr int32", FALSE);
register_icall (mono_string_to_bstr, "mono_string_to_bstr", "ptr obj", FALSE);
register_icall (mono_string_from_bstr_icall, "mono_string_from_bstr_icall", "obj ptr", FALSE);
register_icall (mono_free_bstr, "mono_free_bstr", "void ptr", FALSE);
register_icall (cominterop_type_from_handle, "cominterop_type_from_handle", "object ptr", FALSE);
/* SAFEARRAY marshalling */
register_icall (mono_marshal_safearray_begin, "mono_marshal_safearray_begin", "int32 ptr ptr ptr ptr ptr int32", FALSE);
register_icall (mono_marshal_safearray_get_value, "mono_marshal_safearray_get_value", "ptr ptr ptr", FALSE);
register_icall (mono_marshal_safearray_next, "mono_marshal_safearray_next", "int32 ptr ptr", FALSE);
register_icall (mono_marshal_safearray_end, "mono_marshal_safearray_end", "void ptr ptr", FALSE);
register_icall (mono_marshal_safearray_create, "mono_marshal_safearray_create", "int32 object ptr ptr ptr", FALSE);
register_icall (mono_marshal_safearray_set_value, "mono_marshal_safearray_set_value", "void ptr ptr ptr", FALSE);
register_icall (mono_marshal_safearray_free_indices, "mono_marshal_safearray_free_indices", "void ptr", FALSE);
}
void
mono_cominterop_cleanup (void)
{
mono_os_mutex_destroy (&cominterop_mutex);
}
void
mono_mb_emit_cominterop_call (MonoMethodBuilder *mb, MonoMethodSignature *sig, MonoMethod* method)
{
#ifndef DISABLE_JIT
// get function pointer from 1st arg, the COM interface pointer
mono_mb_emit_ldarg (mb, 0);
mono_mb_emit_icon (mb, cominterop_get_com_slot_for_method (method));
mono_mb_emit_icall (mb, cominterop_get_function_pointer);
mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
mono_mb_emit_byte (mb, CEE_MONO_SAVE_LMF);
mono_mb_emit_calli (mb, sig);
mono_mb_emit_byte (mb, MONO_CUSTOM_PREFIX);
mono_mb_emit_byte (mb, CEE_MONO_RESTORE_LMF);
#endif /* DISABLE_JIT */
}
void
mono_cominterop_emit_ptr_to_object_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
{
#ifndef DISABLE_JIT
switch (conv) {
case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN:
case MONO_MARSHAL_CONV_OBJECT_IDISPATCH: {
static MonoMethod* com_interop_proxy_get_proxy = NULL;
static MonoMethod* get_transparent_proxy = NULL;
guint32 pos_null = 0, pos_ccw = 0, pos_end = 0;
MonoClass *klass = NULL;
klass = mono_class_from_mono_type (type);
mono_mb_emit_ldloc (mb, 1);
mono_mb_emit_byte (mb, CEE_LDNULL);
mono_mb_emit_byte (mb, CEE_STIND_REF);
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_I);
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
/* load dst to store later */
mono_mb_emit_ldloc (mb, 1);
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_I);
mono_mb_emit_icon (mb, TRUE);
mono_mb_emit_icall (mb, cominterop_get_ccw_object);
pos_ccw = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
if (!com_interop_proxy_get_proxy)
com_interop_proxy_get_proxy = mono_class_get_method_from_name_flags (mono_class_get_interop_proxy_class (), "GetProxy", 2, METHOD_ATTRIBUTE_PRIVATE);
#ifndef DISABLE_REMOTING
if (!get_transparent_proxy)
get_transparent_proxy = mono_class_get_method_from_name (mono_defaults.real_proxy_class, "GetTransparentProxy", 0);
#endif
mono_mb_add_local (mb, &mono_class_get_interop_proxy_class ()->byval_arg);
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_I);
mono_mb_emit_ptr (mb, &mono_class_get_com_object_class ()->byval_arg);
mono_mb_emit_icall (mb, cominterop_type_from_handle);
mono_mb_emit_managed_call (mb, com_interop_proxy_get_proxy, NULL);
mono_mb_emit_managed_call (mb, get_transparent_proxy, NULL);
if (conv == MONO_MARSHAL_CONV_OBJECT_INTERFACE) {
g_assert (klass);
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
}
mono_mb_emit_byte (mb, CEE_STIND_REF);
pos_end = mono_mb_emit_short_branch (mb, CEE_BR_S);
/* is already managed object */
mono_mb_patch_short_branch (mb, pos_ccw);
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_I);
mono_mb_emit_icon (mb, TRUE);
mono_mb_emit_icall (mb, cominterop_get_ccw_object);
if (conv == MONO_MARSHAL_CONV_OBJECT_INTERFACE) {
g_assert (klass);
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
}
mono_mb_emit_byte (mb, CEE_STIND_REF);
mono_mb_patch_short_branch (mb, pos_end);
/* case if null */
mono_mb_patch_short_branch (mb, pos_null);
break;
}
default:
g_assert_not_reached ();
}
#endif /* DISABLE_JIT */
}
void
mono_cominterop_emit_object_to_ptr_conv (MonoMethodBuilder *mb, MonoType *type, MonoMarshalConv conv, MonoMarshalSpec *mspec)
{
#ifndef DISABLE_JIT
switch (conv) {
case MONO_MARSHAL_CONV_OBJECT_INTERFACE:
case MONO_MARSHAL_CONV_OBJECT_IDISPATCH:
case MONO_MARSHAL_CONV_OBJECT_IUNKNOWN: {
guint32 pos_null = 0, pos_rcw = 0, pos_end = 0;
mono_mb_emit_ldloc (mb, 1);
mono_mb_emit_icon (mb, 0);
mono_mb_emit_byte (mb, CEE_CONV_U);
mono_mb_emit_byte (mb, CEE_STIND_I);
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_REF);
// if null just break, dst was already inited to 0
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_REF);
mono_mb_emit_icall (mb, cominterop_object_is_rcw);
pos_rcw = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
// load dst to store later
mono_mb_emit_ldloc (mb, 1);
// load src
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_REF);
mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
mono_mb_emit_byte (mb, CEE_LDIND_REF);
/* load the RCW from the ComInteropProxy*/
mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoComInteropProxy, com_object));
mono_mb_emit_byte (mb, CEE_LDIND_REF);
if (conv == MONO_MARSHAL_CONV_OBJECT_INTERFACE) {
mono_mb_emit_ptr (mb, mono_type_get_class (type));
mono_mb_emit_icon (mb, TRUE);
mono_mb_emit_icall (mb, cominterop_get_interface);
}
else if (conv == MONO_MARSHAL_CONV_OBJECT_IUNKNOWN) {
static MonoProperty* iunknown = NULL;
if (!iunknown)
iunknown = mono_class_get_property_from_name (mono_class_get_com_object_class (), "IUnknown");
mono_mb_emit_managed_call (mb, iunknown->get, NULL);
}
else if (conv == MONO_MARSHAL_CONV_OBJECT_IDISPATCH) {
static MonoProperty* idispatch = NULL;
if (!idispatch)
idispatch = mono_class_get_property_from_name (mono_class_get_com_object_class (), "IDispatch");
mono_mb_emit_managed_call (mb, idispatch->get, NULL);
}
else {
g_assert_not_reached ();
}
mono_mb_emit_byte (mb, CEE_STIND_I);
pos_end = mono_mb_emit_short_branch (mb, CEE_BR_S);
// if not rcw
mono_mb_patch_short_branch (mb, pos_rcw);
/* load dst to store later */
mono_mb_emit_ldloc (mb, 1);
/* load src */
mono_mb_emit_ldloc (mb, 0);
mono_mb_emit_byte (mb, CEE_LDIND_REF);
if (conv == MONO_MARSHAL_CONV_OBJECT_INTERFACE)
mono_mb_emit_ptr (mb, mono_type_get_class (type));
else if (conv == MONO_MARSHAL_CONV_OBJECT_IUNKNOWN)
mono_mb_emit_ptr (mb, mono_class_get_iunknown_class ());
else if (conv == MONO_MARSHAL_CONV_OBJECT_IDISPATCH)
mono_mb_emit_ptr (mb, mono_class_get_idispatch_class ());
else
g_assert_not_reached ();
mono_mb_emit_icall (mb, cominterop_get_ccw);
mono_mb_emit_byte (mb, CEE_STIND_I);
mono_mb_patch_short_branch (mb, pos_end);
mono_mb_patch_short_branch (mb, pos_null);
break;
}
default:
g_assert_not_reached ();
}
#endif /* DISABLE_JIT */
}
/**
* cominterop_get_native_wrapper_adjusted:
* @method: managed COM Interop method
*
* Returns: the generated method to call with signature matching
* the unmanaged COM Method signature
*/
static MonoMethod *
cominterop_get_native_wrapper_adjusted (MonoMethod *method)
{
MonoMethod *res;
MonoMethodBuilder *mb_native;
MonoMarshalSpec **mspecs;
MonoMethodSignature *sig, *sig_native;
MonoMethodPInvoke *piinfo = (MonoMethodPInvoke *) method;
int i;
sig = mono_method_signature (method);
// create unmanaged wrapper
mb_native = mono_mb_new (method->klass, method->name, MONO_WRAPPER_MANAGED_TO_NATIVE);
sig_native = cominterop_method_signature (method);
mspecs = g_new (MonoMarshalSpec*, sig_native->param_count+1);
memset (mspecs, 0, sizeof(MonoMarshalSpec*)*(sig_native->param_count+1));
mono_method_get_marshal_info (method, mspecs);
// move managed args up one
for (i = sig->param_count; i >= 1; i--)
mspecs[i+1] = mspecs[i];
// first arg is IntPtr for interface
mspecs[1] = NULL;
if (!(method->iflags & METHOD_IMPL_ATTRIBUTE_PRESERVE_SIG)) {
// move return spec to last param
if (!MONO_TYPE_IS_VOID (sig->ret))
mspecs[sig_native->param_count] = mspecs[0];
mspecs[0] = NULL;
}
for (i = 1; i < sig_native->param_count; i++) {
int mspec_index = i + 1;
if (mspecs[mspec_index] == NULL) {
// default object to VARIANT
if (sig_native->params[i]->type == MONO_TYPE_OBJECT) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_STRUCT;
}
else if (sig_native->params[i]->type == MONO_TYPE_STRING) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_BSTR;
}
else if (sig_native->params[i]->type == MONO_TYPE_CLASS) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_INTERFACE;
}
else if (sig_native->params[i]->type == MONO_TYPE_BOOLEAN) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_VARIANTBOOL;
}
}
}
if (method->iflags & METHOD_IMPL_ATTRIBUTE_PRESERVE_SIG) {
// move return spec to last param
if (!MONO_TYPE_IS_VOID (sig->ret) && mspecs[0] == NULL) {
// default object to VARIANT
if (sig->ret->type == MONO_TYPE_OBJECT) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_STRUCT;
}
else if (sig->ret->type == MONO_TYPE_STRING) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_BSTR;
}
else if (sig->ret->type == MONO_TYPE_CLASS) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_INTERFACE;
}
else if (sig->ret->type == MONO_TYPE_BOOLEAN) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_VARIANTBOOL;
}
}
}
mono_marshal_emit_native_wrapper (method->klass->image, mb_native, sig_native, piinfo, mspecs, piinfo->addr, FALSE, TRUE, FALSE);
res = mono_mb_create_method (mb_native, sig_native, sig_native->param_count + 16);
mono_mb_free (mb_native);
for (i = sig_native->param_count; i >= 0; i--)
if (mspecs [i])
mono_metadata_free_marshal_spec (mspecs [i]);
g_free (mspecs);
return res;
}
/**
* mono_cominterop_get_native_wrapper:
* @method: managed method
*
* Returns: the generated method to call
*/
MonoMethod *
mono_cominterop_get_native_wrapper (MonoMethod *method)
{
MonoMethod *res;
GHashTable *cache;
MonoMethodBuilder *mb;
MonoMethodSignature *sig, *csig;
g_assert (method);
cache = mono_marshal_get_cache (&mono_method_get_wrapper_cache (method)->cominterop_wrapper_cache, mono_aligned_addr_hash, NULL);
if ((res = mono_marshal_find_in_cache (cache, method)))
return res;
if (!method->klass->vtable)
mono_class_setup_vtable (method->klass);
if (!method->klass->methods)
mono_class_setup_methods (method->klass);
g_assert (!mono_class_has_failure (method->klass)); /*FIXME do proper error handling*/
sig = mono_method_signature (method);
mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_COMINTEROP);
#ifndef DISABLE_JIT
/* if method klass is import, that means method
* is really a com call. let interop system emit it.
*/
if (MONO_CLASS_IS_IMPORT(method->klass)) {
/* FIXME: we have to call actual class .ctor
* instead of just __ComObject .ctor.
*/
if (!strcmp(method->name, ".ctor")) {
static MonoMethod *ctor = NULL;
if (!ctor)
ctor = mono_class_get_method_from_name (mono_class_get_com_object_class (), ".ctor", 0);
mono_mb_emit_ldarg (mb, 0);
mono_mb_emit_managed_call (mb, ctor, NULL);
mono_mb_emit_byte (mb, CEE_RET);
}
else {
static MonoMethod * ThrowExceptionForHR = NULL;
MonoMethod *adjusted_method;
int retval = 0;
int ptr_this;
int i;
gboolean preserve_sig = method->iflags & METHOD_IMPL_ATTRIBUTE_PRESERVE_SIG;
// add local variables
ptr_this = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
if (!MONO_TYPE_IS_VOID (sig->ret))
retval = mono_mb_add_local (mb, sig->ret);
// get the type for the interface the method is defined on
// and then get the underlying COM interface for that type
mono_mb_emit_ldarg (mb, 0);
mono_mb_emit_ptr (mb, method);
mono_mb_emit_icall (mb, cominterop_get_method_interface);
mono_mb_emit_icon (mb, TRUE);
mono_mb_emit_icall (mb, cominterop_get_interface);
mono_mb_emit_stloc (mb, ptr_this);
// arg 1 is unmanaged this pointer
mono_mb_emit_ldloc (mb, ptr_this);
// load args
for (i = 1; i <= sig->param_count; i++)
mono_mb_emit_ldarg (mb, i);
// push managed return value as byref last argument
if (!MONO_TYPE_IS_VOID (sig->ret) && !preserve_sig)
mono_mb_emit_ldloc_addr (mb, retval);
adjusted_method = cominterop_get_native_wrapper_adjusted (method);
mono_mb_emit_managed_call (mb, adjusted_method, NULL);
if (!preserve_sig) {
if (!ThrowExceptionForHR)
ThrowExceptionForHR = mono_class_get_method_from_name (mono_defaults.marshal_class, "ThrowExceptionForHR", 1);
mono_mb_emit_managed_call (mb, ThrowExceptionForHR, NULL);
// load return value managed is expecting
if (!MONO_TYPE_IS_VOID (sig->ret))
mono_mb_emit_ldloc (mb, retval);
}
mono_mb_emit_byte (mb, CEE_RET);
}
}
/* Does this case ever get hit? */
else {
char *msg = g_strdup ("non imported interfaces on \
imported classes is not yet implemented.");
mono_mb_emit_exception (mb, "NotSupportedException", msg);
}
#endif /* DISABLE_JIT */
csig = mono_metadata_signature_dup_full (method->klass->image, sig);
csig->pinvoke = 0;
res = mono_mb_create_and_cache (cache, method,
mb, csig, csig->param_count + 16);
mono_mb_free (mb);
return res;
}
/**
* mono_cominterop_get_invoke:
* @method: managed method
*
* Returns: the generated method that calls the underlying __ComObject
* rather than the proxy object.
*/
MonoMethod *
mono_cominterop_get_invoke (MonoMethod *method)
{
MonoMethodSignature *sig;
MonoMethodBuilder *mb;
MonoMethod *res;
int i;
GHashTable* cache;
cache = mono_marshal_get_cache (&mono_method_get_wrapper_cache (method)->cominterop_invoke_cache, mono_aligned_addr_hash, NULL);
g_assert (method);
if ((res = mono_marshal_find_in_cache (cache, method)))
return res;
sig = mono_signature_no_pinvoke (method);
/* we cant remote methods without this pointer */
if (!sig->hasthis)
return method;
mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_COMINTEROP_INVOKE);
#ifndef DISABLE_JIT
/* get real proxy object, which is a ComInteropProxy in this case*/
mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
mono_mb_emit_ldarg (mb, 0);
mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
mono_mb_emit_byte (mb, CEE_LDIND_REF);
/* load the RCW from the ComInteropProxy*/
mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoComInteropProxy, com_object));
mono_mb_emit_byte (mb, CEE_LDIND_REF);
/* load args and make the call on the RCW */
for (i = 1; i <= sig->param_count; i++)
mono_mb_emit_ldarg (mb, i);
if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
MonoMethod * native_wrapper = mono_cominterop_get_native_wrapper(method);
mono_mb_emit_managed_call (mb, native_wrapper, NULL);
}
else {
if (method->flags & METHOD_ATTRIBUTE_VIRTUAL)
mono_mb_emit_op (mb, CEE_CALLVIRT, method);
else
mono_mb_emit_op (mb, CEE_CALL, method);
}
if (!strcmp(method->name, ".ctor")) {
static MonoMethod *cache_proxy = NULL;
if (!cache_proxy)
cache_proxy = mono_class_get_method_from_name (mono_class_get_interop_proxy_class (), "CacheProxy", 0);
mono_mb_emit_ldarg (mb, 0);
mono_mb_emit_ldflda (mb, MONO_STRUCT_OFFSET (MonoTransparentProxy, rp));
mono_mb_emit_byte (mb, CEE_LDIND_REF);
mono_mb_emit_managed_call (mb, cache_proxy, NULL);
}
mono_marshal_emit_thread_interrupt_checkpoint (mb);
mono_mb_emit_byte (mb, CEE_RET);
#endif /* DISABLE_JIT */
res = mono_mb_create_and_cache (cache, method, mb, sig, sig->param_count + 16);
mono_mb_free (mb);
return res;
}
/* Maps a managed object to its unmanaged representation
* i.e. it's COM Callable Wrapper (CCW).
* Key: MonoObject*
* Value: MonoCCW*
*/
static GHashTable* ccw_hash = NULL;
/* Maps a CCW interface to it's containing CCW.
* Note that a CCW support many interfaces.
* Key: MonoCCW*
* Value: MonoCCWInterface*
*/
static GHashTable* ccw_interface_hash = NULL;
/* Maps the IUnknown value of a RCW to
* it's MonoComInteropProxy*.
* Key: void*
* Value: gchandle
*/
static GHashTable* rcw_hash = NULL;
int
mono_cominterop_emit_marshal_com_interface (EmitMarshalContext *m, int argnum,
MonoType *t,
MonoMarshalSpec *spec,
int conv_arg, MonoType **conv_arg_type,
MarshalAction action)
{
MonoMethodBuilder *mb = m->mb;
MonoClass *klass = t->data.klass;
static MonoMethod* get_object_for_iunknown = NULL;
static MonoMethod* get_iunknown_for_object_internal = NULL;
static MonoMethod* get_com_interface_for_object_internal = NULL;
static MonoMethod* get_idispatch_for_object_internal = NULL;
static MonoMethod* marshal_release = NULL;
static MonoMethod* AddRef = NULL;
if (!get_object_for_iunknown)
get_object_for_iunknown = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForIUnknown", 1);
if (!get_iunknown_for_object_internal)
get_iunknown_for_object_internal = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetIUnknownForObjectInternal", 1);
if (!get_idispatch_for_object_internal)
get_idispatch_for_object_internal = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetIDispatchForObjectInternal", 1);
if (!get_com_interface_for_object_internal)
get_com_interface_for_object_internal = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetComInterfaceForObjectInternal", 2);
if (!marshal_release)
marshal_release = mono_class_get_method_from_name (mono_defaults.marshal_class, "Release", 1);
#ifdef DISABLE_JIT
switch (action) {
case MARSHAL_ACTION_CONV_IN:
*conv_arg_type = &mono_defaults.int_class->byval_arg;
break;
case MARSHAL_ACTION_MANAGED_CONV_IN:
*conv_arg_type = &mono_defaults.int_class->byval_arg;
break;
default:
break;
}
#else
switch (action) {
case MARSHAL_ACTION_CONV_IN: {
guint32 pos_null = 0;
*conv_arg_type = &mono_defaults.int_class->byval_arg;
conv_arg = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
mono_mb_emit_ptr (mb, NULL);
mono_mb_emit_stloc (mb, conv_arg);
/* we dont need any conversions for out parameters */
if (t->byref && t->attrs & PARAM_ATTRIBUTE_OUT)
break;
mono_mb_emit_ldarg (mb, argnum);
if (t->byref)
mono_mb_emit_byte (mb, CEE_LDIND_REF);
/* if null just break, conv arg was already inited to 0 */
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
mono_mb_emit_ldarg (mb, argnum);
if (t->byref)
mono_mb_emit_byte (mb, CEE_LDIND_REF);
if (klass && klass != mono_defaults.object_class) {
mono_mb_emit_ptr (mb, t);
mono_mb_emit_icall (mb, cominterop_type_from_handle);
mono_mb_emit_managed_call (mb, get_com_interface_for_object_internal, NULL);
}
else if (spec->native == MONO_NATIVE_IUNKNOWN)
mono_mb_emit_managed_call (mb, get_iunknown_for_object_internal, NULL);
else if (spec->native == MONO_NATIVE_IDISPATCH)
mono_mb_emit_managed_call (mb, get_idispatch_for_object_internal, NULL);
else if (!klass && spec->native == MONO_NATIVE_INTERFACE)
mono_mb_emit_managed_call (mb, get_iunknown_for_object_internal, NULL);
else
g_assert_not_reached ();
mono_mb_emit_stloc (mb, conv_arg);
mono_mb_patch_short_branch (mb, pos_null);
break;
}
case MARSHAL_ACTION_CONV_OUT: {
if (t->byref && (t->attrs & PARAM_ATTRIBUTE_OUT)) {
int ccw_obj;
guint32 pos_null = 0, pos_ccw = 0, pos_end = 0;
ccw_obj = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_byte (mb, CEE_LDNULL);
mono_mb_emit_byte (mb, CEE_STIND_REF);
mono_mb_emit_ldloc (mb, conv_arg);
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
mono_mb_emit_ldloc (mb, conv_arg);
mono_mb_emit_icon (mb, TRUE);
mono_mb_emit_icall (mb, cominterop_get_ccw_object);
mono_mb_emit_stloc (mb, ccw_obj);
mono_mb_emit_ldloc (mb, ccw_obj);
pos_ccw = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_ldloc (mb, conv_arg);
mono_mb_emit_managed_call (mb, get_object_for_iunknown, NULL);
if (klass && klass != mono_defaults.object_class)
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
mono_mb_emit_byte (mb, CEE_STIND_REF);
pos_end = mono_mb_emit_short_branch (mb, CEE_BR_S);
/* is already managed object */
mono_mb_patch_short_branch (mb, pos_ccw);
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_ldloc (mb, ccw_obj);
if (klass && klass != mono_defaults.object_class)
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
mono_mb_emit_byte (mb, CEE_STIND_REF);
mono_mb_patch_short_branch (mb, pos_end);
/* need to call Release to follow COM rules of ownership */
mono_mb_emit_ldloc (mb, conv_arg);
mono_mb_emit_managed_call (mb, marshal_release, NULL);
mono_mb_emit_byte (mb, CEE_POP);
/* case if null */
mono_mb_patch_short_branch (mb, pos_null);
}
break;
}
case MARSHAL_ACTION_PUSH:
if (t->byref)
mono_mb_emit_ldloc_addr (mb, conv_arg);
else
mono_mb_emit_ldloc (mb, conv_arg);
break;
case MARSHAL_ACTION_CONV_RESULT: {
int ccw_obj, ret_ptr;
guint32 pos_null = 0, pos_ccw = 0, pos_end = 0;
ccw_obj = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
ret_ptr = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
/* store return value */
mono_mb_emit_stloc (mb, ret_ptr);
mono_mb_emit_ldloc (mb, ret_ptr);
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
mono_mb_emit_ldloc (mb, ret_ptr);
mono_mb_emit_icon (mb, TRUE);
mono_mb_emit_icall (mb, cominterop_get_ccw_object);
mono_mb_emit_stloc (mb, ccw_obj);
mono_mb_emit_ldloc (mb, ccw_obj);
pos_ccw = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
mono_mb_emit_ldloc (mb, ret_ptr);
mono_mb_emit_managed_call (mb, get_object_for_iunknown, NULL);
if (klass && klass != mono_defaults.object_class)
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
mono_mb_emit_stloc (mb, 3);
pos_end = mono_mb_emit_short_branch (mb, CEE_BR_S);
/* is already managed object */
mono_mb_patch_short_branch (mb, pos_ccw);
mono_mb_emit_ldloc (mb, ccw_obj);
if (klass && klass != mono_defaults.object_class)
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
mono_mb_emit_stloc (mb, 3);
mono_mb_patch_short_branch (mb, pos_end);
/* need to call Release to follow COM rules of ownership */
mono_mb_emit_ldloc (mb, ret_ptr);
mono_mb_emit_managed_call (mb, marshal_release, NULL);
mono_mb_emit_byte (mb, CEE_POP);
/* case if null */
mono_mb_patch_short_branch (mb, pos_null);
break;
}
case MARSHAL_ACTION_MANAGED_CONV_IN: {
int ccw_obj;
guint32 pos_null = 0, pos_ccw = 0, pos_end = 0;
ccw_obj = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
klass = mono_class_from_mono_type (t);
conv_arg = mono_mb_add_local (mb, &klass->byval_arg);
*conv_arg_type = &mono_defaults.int_class->byval_arg;
mono_mb_emit_byte (mb, CEE_LDNULL);
mono_mb_emit_stloc (mb, conv_arg);
if (t->attrs & PARAM_ATTRIBUTE_OUT)
break;
mono_mb_emit_ldarg (mb, argnum);
if (t->byref)
mono_mb_emit_byte (mb, CEE_LDIND_REF);
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
mono_mb_emit_ldarg (mb, argnum);
if (t->byref)
mono_mb_emit_byte (mb, CEE_LDIND_REF);
mono_mb_emit_icon (mb, TRUE);
mono_mb_emit_icall (mb, cominterop_get_ccw_object);
mono_mb_emit_stloc (mb, ccw_obj);
mono_mb_emit_ldloc (mb, ccw_obj);
pos_ccw = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
mono_mb_emit_ldarg (mb, argnum);
if (t->byref)
mono_mb_emit_byte (mb, CEE_LDIND_REF);
mono_mb_emit_managed_call (mb, get_object_for_iunknown, NULL);
if (klass && klass != mono_defaults.object_class)
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
mono_mb_emit_stloc (mb, conv_arg);
pos_end = mono_mb_emit_short_branch (mb, CEE_BR_S);
/* is already managed object */
mono_mb_patch_short_branch (mb, pos_ccw);
mono_mb_emit_ldloc (mb, ccw_obj);
if (klass && klass != mono_defaults.object_class)
mono_mb_emit_op (mb, CEE_CASTCLASS, klass);
mono_mb_emit_stloc (mb, conv_arg);
mono_mb_patch_short_branch (mb, pos_end);
/* case if null */
mono_mb_patch_short_branch (mb, pos_null);
break;
}
case MARSHAL_ACTION_MANAGED_CONV_OUT: {
if (t->byref && t->attrs & PARAM_ATTRIBUTE_OUT) {
guint32 pos_null = 0;
if (!AddRef)
AddRef = mono_class_get_method_from_name (mono_defaults.marshal_class, "AddRef", 1);
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_byte (mb, CEE_LDC_I4_0);
mono_mb_emit_byte (mb, CEE_STIND_I);
mono_mb_emit_ldloc (mb, conv_arg);
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
/* to store later */
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_ldloc (mb, conv_arg);
if (klass && klass != mono_defaults.object_class) {
mono_mb_emit_ptr (mb, t);
mono_mb_emit_icall (mb, cominterop_type_from_handle);
mono_mb_emit_managed_call (mb, get_com_interface_for_object_internal, NULL);
}
else if (spec->native == MONO_NATIVE_IUNKNOWN)
mono_mb_emit_managed_call (mb, get_iunknown_for_object_internal, NULL);
else if (spec->native == MONO_NATIVE_IDISPATCH)
mono_mb_emit_managed_call (mb, get_idispatch_for_object_internal, NULL);
else if (!klass && spec->native == MONO_NATIVE_INTERFACE)
mono_mb_emit_managed_call (mb, get_iunknown_for_object_internal, NULL);
else
g_assert_not_reached ();
mono_mb_emit_byte (mb, CEE_STIND_I);
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_byte (mb, CEE_LDIND_I);
mono_mb_emit_managed_call (mb, AddRef, NULL);
mono_mb_emit_byte (mb, CEE_POP);
mono_mb_patch_short_branch (mb, pos_null);
}
break;
}
case MARSHAL_ACTION_MANAGED_CONV_RESULT: {
guint32 pos_null = 0;
int ccw_obj;
ccw_obj = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
if (!AddRef)
AddRef = mono_class_get_method_from_name (mono_defaults.marshal_class, "AddRef", 1);
/* store return value */
mono_mb_emit_stloc (mb, ccw_obj);
mono_mb_emit_ldloc (mb, ccw_obj);
/* if null just break, conv arg was already inited to 0 */
pos_null = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
/* to store later */
mono_mb_emit_ldloc (mb, ccw_obj);
if (klass && klass != mono_defaults.object_class) {
mono_mb_emit_ptr (mb, t);
mono_mb_emit_icall (mb, cominterop_type_from_handle);
mono_mb_emit_managed_call (mb, get_com_interface_for_object_internal, NULL);
}
else if (spec->native == MONO_NATIVE_IUNKNOWN)
mono_mb_emit_managed_call (mb, get_iunknown_for_object_internal, NULL);
else if (spec->native == MONO_NATIVE_IDISPATCH)
mono_mb_emit_managed_call (mb, get_idispatch_for_object_internal, NULL);
else if (!klass && spec->native == MONO_NATIVE_INTERFACE)
mono_mb_emit_managed_call (mb, get_iunknown_for_object_internal, NULL);
else
g_assert_not_reached ();
mono_mb_emit_stloc (mb, 3);
mono_mb_emit_ldloc (mb, 3);
mono_mb_emit_managed_call (mb, AddRef, NULL);
mono_mb_emit_byte (mb, CEE_POP);
mono_mb_patch_short_branch (mb, pos_null);
break;
}
default:
g_assert_not_reached ();
}
#endif /* DISABLE_JIT */
return conv_arg;
}
typedef struct
{
int (STDCALL *QueryInterface)(gpointer pUnk, gpointer riid, gpointer* ppv);
int (STDCALL *AddRef)(gpointer pUnk);
int (STDCALL *Release)(gpointer pUnk);
} MonoIUnknown;
#define MONO_S_OK 0x00000000L
#define MONO_E_NOINTERFACE 0x80004002L
#define MONO_E_NOTIMPL 0x80004001L
#define MONO_E_INVALIDARG 0x80070057L
#define MONO_E_DISP_E_UNKNOWNNAME 0x80020006L
#define MONO_E_DISPID_UNKNOWN (gint32)-1
int
ves_icall_System_Runtime_InteropServices_Marshal_AddRefInternal (gpointer pUnk)
{
g_assert (pUnk);
return (*(MonoIUnknown**)pUnk)->AddRef(pUnk);
}
int
ves_icall_System_Runtime_InteropServices_Marshal_QueryInterfaceInternal (gpointer pUnk, gpointer riid, gpointer* ppv)
{
g_assert (pUnk);
return (*(MonoIUnknown**)pUnk)->QueryInterface(pUnk, riid, ppv);
}
int
ves_icall_System_Runtime_InteropServices_Marshal_ReleaseInternal (gpointer pUnk)
{
g_assert (pUnk);
return (*(MonoIUnknown**)pUnk)->Release(pUnk);
}
static gboolean cominterop_can_support_dispatch (MonoClass* klass)
{
if (!(klass->flags & TYPE_ATTRIBUTE_PUBLIC) )
return FALSE;
if (!cominterop_com_visible (klass))
return FALSE;
return TRUE;
}
static void*
cominterop_get_idispatch_for_object (MonoObject* object, MonoError *error)
{
mono_error_init (error);
if (!object)
return NULL;
if (cominterop_object_is_rcw (object)) {
return cominterop_get_interface_checked (((MonoComInteropProxy*)((MonoTransparentProxy*)object)->rp)->com_object,
mono_class_get_idispatch_class (), error);
}
else {
MonoClass* klass = mono_object_class (object);
if (!cominterop_can_support_dispatch (klass) ) {
cominterop_set_hr_error (error, MONO_E_NOINTERFACE);
return NULL;
}
return cominterop_get_ccw_checked (object, mono_class_get_idispatch_class (), error);
}
}
void*
ves_icall_System_Runtime_InteropServices_Marshal_GetIUnknownForObjectInternal (MonoObject* object)
{
#ifndef DISABLE_COM
MonoError error;
if (!object)
return NULL;
if (cominterop_object_is_rcw (object)) {
MonoClass *klass = NULL;
MonoRealProxy* real_proxy = NULL;
if (!object)
return NULL;
klass = mono_object_class (object);
if (!mono_class_is_transparent_proxy (klass)) {
g_assert_not_reached ();
return NULL;
}
real_proxy = ((MonoTransparentProxy*)object)->rp;
if (!real_proxy) {
g_assert_not_reached ();
return NULL;
}
klass = mono_object_class (real_proxy);
if (klass != mono_class_get_interop_proxy_class ()) {
g_assert_not_reached ();
return NULL;
}
if (!((MonoComInteropProxy*)real_proxy)->com_object) {
g_assert_not_reached ();
return NULL;
}
return ((MonoComInteropProxy*)real_proxy)->com_object->iunknown;
}
else {
void* ccw_entry = cominterop_get_ccw_checked (object, mono_class_get_iunknown_class (), &error);
mono_error_set_pending_exception (&error);
return ccw_entry;
}
#else
g_assert_not_reached ();
#endif
}
MonoObject*
ves_icall_System_Runtime_InteropServices_Marshal_GetObjectForCCW (void* pUnk)
{
#ifndef DISABLE_COM
MonoObject* object = NULL;
if (!pUnk)
return NULL;
/* see if it is a CCW */
object = cominterop_get_ccw_object ((MonoCCWInterface*)pUnk, TRUE);
return object;
#else
g_assert_not_reached ();
#endif
}
void*
ves_icall_System_Runtime_InteropServices_Marshal_GetIDispatchForObjectInternal (MonoObject* object)
{
#ifndef DISABLE_COM
MonoError error;
void* idisp = cominterop_get_idispatch_for_object (object, &error);
mono_error_set_pending_exception (&error);
return idisp;
#else
g_assert_not_reached ();
#endif
}
void*
ves_icall_System_Runtime_InteropServices_Marshal_GetCCW (MonoObject* object, MonoReflectionType* type)
{
#ifndef DISABLE_COM
MonoError error;
MonoClass* klass = NULL;
void* itf = NULL;
g_assert (type);
g_assert (type->type);
klass = mono_type_get_class (type->type);
g_assert (klass);
if (!mono_class_init (klass)) {
mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
return NULL;
}
itf = cominterop_get_ccw_checked (object, klass, &error);
mono_error_set_pending_exception (&error);
return itf;
#else
g_assert_not_reached ();
#endif
}
MonoBoolean
ves_icall_System_Runtime_InteropServices_Marshal_IsComObject (MonoObject* object)
{
#ifndef DISABLE_COM
return (MonoBoolean)cominterop_object_is_rcw (object);
#else
g_assert_not_reached ();
#endif
}
gint32
ves_icall_System_Runtime_InteropServices_Marshal_ReleaseComObjectInternal (MonoObject* object)
{
#ifndef DISABLE_COM
MonoComInteropProxy* proxy = NULL;
gint32 ref_count = 0;
g_assert (object);
g_assert (cominterop_object_is_rcw (object));
proxy = (MonoComInteropProxy*)((MonoTransparentProxy*)object)->rp;
g_assert (proxy);
if (proxy->ref_count == 0)
return -1;
ref_count = InterlockedDecrement (&proxy->ref_count);
g_assert (ref_count >= 0);
if (ref_count == 0)
ves_icall_System_ComObject_ReleaseInterfaces (proxy->com_object);
return ref_count;
#else
g_assert_not_reached ();
#endif
}
guint32
ves_icall_System_Runtime_InteropServices_Marshal_GetComSlotForMethodInfoInternal (MonoReflectionMethod *m)
{
#ifndef DISABLE_COM
return cominterop_get_com_slot_for_method (m->method);
#else
g_assert_not_reached ();
#endif
}
/* Only used for COM RCWs */
MonoObject *
ves_icall_System_ComObject_CreateRCW (MonoReflectionType *type)
{
MonoError error;
MonoClass *klass;
MonoDomain *domain;
MonoObject *obj;
domain = mono_object_domain (type);
klass = mono_class_from_mono_type (type->type);
/* call mono_object_new_alloc_specific_checked instead of mono_object_new
* because we want to actually create object. mono_object_new checks
* to see if type is import and creates transparent proxy. this method
* is called by the corresponding real proxy to create the real RCW.
* Constructor does not need to be called. Will be called later.
*/
MonoVTable *vtable = mono_class_vtable_full (domain, klass, &error);
if (mono_error_set_pending_exception (&error))
return NULL;
obj = mono_object_new_alloc_specific_checked (vtable, &error);
if (mono_error_set_pending_exception (&error))
return NULL;
return obj;
}
static gboolean
cominterop_rcw_interface_finalizer (gpointer key, gpointer value, gpointer user_data)
{
ves_icall_System_Runtime_InteropServices_Marshal_ReleaseInternal (value);
return TRUE;
}
void
ves_icall_System_ComObject_ReleaseInterfaces (MonoComObject* obj)
{
g_assert(obj);
if (obj->itf_hash) {
guint32 gchandle = 0;
mono_cominterop_lock ();
gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (rcw_hash, obj->iunknown));
if (gchandle) {
mono_gchandle_free (gchandle);
g_hash_table_remove (rcw_hash, obj->iunknown);
}
g_hash_table_foreach_remove (obj->itf_hash, cominterop_rcw_interface_finalizer, NULL);
g_hash_table_destroy (obj->itf_hash);
ves_icall_System_Runtime_InteropServices_Marshal_ReleaseInternal (obj->iunknown);
obj->iunknown = NULL;
obj->itf_hash = NULL;
mono_cominterop_unlock ();
}
}
static gboolean
cominterop_rcw_finalizer (gpointer key, gpointer value, gpointer user_data)
{
guint32 gchandle = 0;
gchandle = GPOINTER_TO_UINT (value);
if (gchandle) {
MonoComInteropProxy* proxy = (MonoComInteropProxy*)mono_gchandle_get_target (gchandle);
if (proxy) {
if (proxy->com_object->itf_hash) {
g_hash_table_foreach_remove (proxy->com_object->itf_hash, cominterop_rcw_interface_finalizer, NULL);
g_hash_table_destroy (proxy->com_object->itf_hash);
}
if (proxy->com_object->iunknown)
ves_icall_System_Runtime_InteropServices_Marshal_ReleaseInternal (proxy->com_object->iunknown);
proxy->com_object->iunknown = NULL;
proxy->com_object->itf_hash = NULL;
}
mono_gchandle_free (gchandle);
}
return TRUE;
}
void
cominterop_release_all_rcws (void)
{
if (!rcw_hash)
return;
mono_cominterop_lock ();
g_hash_table_foreach_remove (rcw_hash, cominterop_rcw_finalizer, NULL);
g_hash_table_destroy (rcw_hash);
rcw_hash = NULL;
mono_cominterop_unlock ();
}
gpointer
ves_icall_System_ComObject_GetInterfaceInternal (MonoComObject* obj, MonoReflectionType* type, MonoBoolean throw_exception)
{
#ifndef DISABLE_COM
MonoError error;
MonoClass *klass = mono_type_get_class (type->type);
if (!mono_class_init (klass)) {
mono_set_pending_exception (mono_class_get_exception_for_failure (klass));
return NULL;
}
gpointer itf = cominterop_get_interface_checked (obj, klass, &error);
if (throw_exception)
mono_error_set_pending_exception (&error);
else
mono_error_cleanup (&error);
return itf;
#else
g_assert_not_reached ();
#endif
}
void
ves_icall_Mono_Interop_ComInteropProxy_AddProxy (gpointer pUnk, MonoComInteropProxy* proxy)
{
#ifndef DISABLE_COM
guint32 gchandle = 0;
if (!rcw_hash) {
mono_cominterop_lock ();
rcw_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
mono_cominterop_unlock ();
}
gchandle = mono_gchandle_new_weakref ((MonoObject*)proxy, FALSE);
mono_cominterop_lock ();
g_hash_table_insert (rcw_hash, pUnk, GUINT_TO_POINTER (gchandle));
mono_cominterop_unlock ();
#else
g_assert_not_reached ();
#endif
}
MonoComInteropProxy*
ves_icall_Mono_Interop_ComInteropProxy_FindProxy (gpointer pUnk)
{
#ifndef DISABLE_COM
MonoComInteropProxy* proxy = NULL;
guint32 gchandle = 0;
mono_cominterop_lock ();
if (rcw_hash)
gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (rcw_hash, pUnk));
mono_cominterop_unlock ();
if (gchandle) {
proxy = (MonoComInteropProxy*)mono_gchandle_get_target (gchandle);
/* proxy is null means we need to free up old RCW */
if (!proxy) {
mono_gchandle_free (gchandle);
g_hash_table_remove (rcw_hash, pUnk);
}
}
return proxy;
#else
g_assert_not_reached ();
#endif
}
/**
* cominterop_get_ccw_object:
* @ccw_entry: a pointer to the CCWEntry
* @verify: verify ccw_entry is in fact a ccw
*
* Returns: the corresponding object for the CCW
*/
static MonoObject*
cominterop_get_ccw_object (MonoCCWInterface* ccw_entry, gboolean verify)
{
MonoCCW *ccw = NULL;
/* no CCW's exist yet */
if (!ccw_interface_hash)
return NULL;
if (verify) {
ccw = (MonoCCW *)g_hash_table_lookup (ccw_interface_hash, ccw_entry);
}
else {
ccw = ccw_entry->ccw;
g_assert (ccw);
}
if (ccw)
return mono_gchandle_get_target (ccw->gc_handle);
else
return NULL;
}
static void
cominterop_setup_marshal_context (EmitMarshalContext *m, MonoMethod *method)
{
MonoMethodSignature *sig, *csig;
sig = mono_method_signature (method);
/* we copy the signature, so that we can modify it */
/* FIXME: which to use? */
csig = mono_metadata_signature_dup_full (method->klass->image, sig);
/* csig = mono_metadata_signature_dup (sig); */
/* STDCALL on windows, CDECL everywhere else to work with XPCOM and MainWin COM */
#ifdef HOST_WIN32
csig->call_convention = MONO_CALL_STDCALL;
#else
csig->call_convention = MONO_CALL_C;
#endif
csig->hasthis = 0;
csig->pinvoke = 1;
m->image = method->klass->image;
m->piinfo = NULL;
m->retobj_var = 0;
m->sig = sig;
m->csig = csig;
}
/**
* cominterop_get_ccw_checked:
* @object: a pointer to the object
* @itf: interface type needed
* @error: set on error
*
* Returns: a value indicating if the object is a
* Runtime Callable Wrapper (RCW) for a COM object.
* On failure returns NULL and sets @error.
*/
static gpointer
cominterop_get_ccw_checked (MonoObject* object, MonoClass* itf, MonoError *error)
{
int i;
MonoCCW *ccw = NULL;
MonoCCWInterface* ccw_entry = NULL;
gpointer *vtable = NULL;
static gpointer iunknown[3] = {NULL, NULL, NULL};
static gpointer idispatch[4] = {NULL, NULL, NULL, NULL};
MonoClass* iface = NULL;
MonoClass* klass = NULL;
EmitMarshalContext m;
int start_slot = 3;
int method_count = 0;
GList *ccw_list, *ccw_list_item;
MonoCustomAttrInfo *cinfo = NULL;
mono_error_init (error);
if (!object)
return NULL;
klass = mono_object_get_class (object);
mono_cominterop_lock ();
if (!ccw_hash)
ccw_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
if (!ccw_interface_hash)
ccw_interface_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
ccw_list = (GList *)g_hash_table_lookup (ccw_hash, GINT_TO_POINTER (mono_object_hash (object)));
mono_cominterop_unlock ();
ccw_list_item = ccw_list;
while (ccw_list_item) {
MonoCCW* ccw_iter = (MonoCCW *)ccw_list_item->data;
if (mono_gchandle_get_target (ccw_iter->gc_handle) == object) {
ccw = ccw_iter;
break;
}
ccw_list_item = g_list_next(ccw_list_item);
}
if (!iunknown [0]) {
iunknown [0] = cominterop_ccw_queryinterface;
iunknown [1] = cominterop_ccw_addref;
iunknown [2] = cominterop_ccw_release;
}
if (!idispatch [0]) {
idispatch [0] = cominterop_ccw_get_type_info_count;
idispatch [1] = cominterop_ccw_get_type_info;
idispatch [2] = cominterop_ccw_get_ids_of_names;
idispatch [3] = cominterop_ccw_invoke;
}
if (!ccw) {
ccw = g_new0 (MonoCCW, 1);
#ifdef HOST_WIN32
ccw->free_marshaler = 0;
#endif
ccw->vtable_hash = g_hash_table_new (mono_aligned_addr_hash, NULL);
ccw->ref_count = 0;
/* just alloc a weak handle until we are addref'd*/
ccw->gc_handle = mono_gchandle_new_weakref (object, FALSE);
if (!ccw_list) {
ccw_list = g_list_alloc ();
ccw_list->data = ccw;
}
else
ccw_list = g_list_append (ccw_list, ccw);
mono_cominterop_lock ();
g_hash_table_insert (ccw_hash, GINT_TO_POINTER (mono_object_hash (object)), ccw_list);
mono_cominterop_unlock ();
/* register for finalization to clean up ccw */
mono_object_register_finalizer (object);
}
cinfo = mono_custom_attrs_from_class_checked (itf, error);
mono_error_assert_ok (error);
if (cinfo) {
static MonoClass* coclass_attribute = NULL;
if (!coclass_attribute)
coclass_attribute = mono_class_load_from_name (mono_defaults.corlib, "System.Runtime.InteropServices", "CoClassAttribute");
if (mono_custom_attrs_has_attr (cinfo, coclass_attribute)) {
g_assert(itf->interface_count && itf->interfaces[0]);
itf = itf->interfaces[0];
}
if (!cinfo->cached)
mono_custom_attrs_free (cinfo);
}
iface = itf;
if (iface == mono_class_get_iunknown_class ()) {
start_slot = 3;
}
else if (iface == mono_class_get_idispatch_class ()) {
start_slot = 7;
}
else {
method_count += iface->method.count;
start_slot = cominterop_get_com_slot_begin (iface);
iface = NULL;
}
ccw_entry = (MonoCCWInterface *)g_hash_table_lookup (ccw->vtable_hash, itf);
if (!ccw_entry) {
int vtable_index = method_count-1+start_slot;
vtable = (void **)mono_image_alloc0 (klass->image, sizeof (gpointer)*(method_count+start_slot));
memcpy (vtable, iunknown, sizeof (iunknown));
if (start_slot == 7)
memcpy (vtable+3, idispatch, sizeof (idispatch));
iface = itf;
for (i = iface->method.count-1; i >= 0;i--) {
int param_index = 0;
MonoMethodBuilder *mb;
MonoMarshalSpec ** mspecs;
MonoMethod *wrapper_method, *adjust_method;
MonoMethod *method = iface->methods [i];
MonoMethodSignature* sig_adjusted;
MonoMethodSignature* sig = mono_method_signature (method);
gboolean preserve_sig = method->iflags & METHOD_IMPL_ATTRIBUTE_PRESERVE_SIG;
mb = mono_mb_new (iface, method->name, MONO_WRAPPER_NATIVE_TO_MANAGED);
adjust_method = cominterop_get_managed_wrapper_adjusted (method);
sig_adjusted = mono_method_signature (adjust_method);
mspecs = g_new (MonoMarshalSpec*, sig_adjusted->param_count + 1);
mono_method_get_marshal_info (method, mspecs);
/* move managed args up one */
for (param_index = sig->param_count; param_index >= 1; param_index--) {
int mspec_index = param_index+1;
mspecs [mspec_index] = mspecs [param_index];
if (mspecs[mspec_index] == NULL) {
if (sig_adjusted->params[param_index]->type == MONO_TYPE_OBJECT) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_STRUCT;
}
else if (sig_adjusted->params[param_index]->type == MONO_TYPE_STRING) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_BSTR;
}
else if (sig_adjusted->params[param_index]->type == MONO_TYPE_CLASS) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_INTERFACE;
}
else if (sig_adjusted->params[param_index]->type == MONO_TYPE_BOOLEAN) {
mspecs[mspec_index] = g_new0 (MonoMarshalSpec, 1);
mspecs[mspec_index]->native = MONO_NATIVE_VARIANTBOOL;
}
} else {
/* increase SizeParamIndex since we've added a param */
if (sig_adjusted->params[param_index]->type == MONO_TYPE_ARRAY ||
sig_adjusted->params[param_index]->type == MONO_TYPE_SZARRAY)
if (mspecs[mspec_index]->data.array_data.param_num != -1)
mspecs[mspec_index]->data.array_data.param_num++;
}
}
/* first arg is IntPtr for interface */
mspecs [1] = NULL;
/* move return spec to last param */
if (!preserve_sig && !MONO_TYPE_IS_VOID (sig->ret)) {
if (mspecs [0] == NULL) {
if (sig_adjusted->params[sig_adjusted->param_count-1]->type == MONO_TYPE_OBJECT) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_STRUCT;
}
else if (sig_adjusted->params[sig_adjusted->param_count-1]->type == MONO_TYPE_STRING) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_BSTR;
}
else if (sig_adjusted->params[sig_adjusted->param_count-1]->type == MONO_TYPE_CLASS) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_INTERFACE;
}
else if (sig_adjusted->params[sig_adjusted->param_count-1]->type == MONO_TYPE_BOOLEAN) {
mspecs[0] = g_new0 (MonoMarshalSpec, 1);
mspecs[0]->native = MONO_NATIVE_VARIANTBOOL;
}
}
mspecs [sig_adjusted->param_count] = mspecs [0];
mspecs [0] = NULL;
}
#ifndef DISABLE_JIT
/* skip visiblity since we call internal methods */
mb->skip_visibility = TRUE;
#endif
cominterop_setup_marshal_context (&m, adjust_method);
m.mb = mb;
mono_marshal_emit_managed_wrapper (mb, sig_adjusted, mspecs, &m, adjust_method, 0);
mono_cominterop_lock ();
wrapper_method = mono_mb_create_method (mb, m.csig, m.csig->param_count + 16);
mono_cominterop_unlock ();
vtable [vtable_index--] = mono_compile_method_checked (wrapper_method, error);
// cleanup, then error out if compile_method failed
for (param_index = sig_adjusted->param_count; param_index >= 0; param_index--)
if (mspecs [param_index])
mono_metadata_free_marshal_spec (mspecs [param_index]);
g_free (mspecs);
return_val_if_nok (error, NULL);
}
ccw_entry = g_new0 (MonoCCWInterface, 1);
ccw_entry->ccw = ccw;
ccw_entry->vtable = vtable;
g_hash_table_insert (ccw->vtable_hash, itf, ccw_entry);
g_hash_table_insert (ccw_interface_hash, ccw_entry, ccw);
}
return ccw_entry;
}
/**
* cominterop_get_ccw:
* @object: a pointer to the object
* @itf: interface type needed
*
* Returns: a value indicating if the object is a
* Runtime Callable Wrapper (RCW) for a COM object
*/
static gpointer
cominterop_get_ccw (MonoObject* object, MonoClass* itf)
{
MonoError error;
gpointer ccw_entry = cominterop_get_ccw_checked (object, itf, &error);
mono_error_set_pending_exception (&error);
return ccw_entry;
}
static gboolean
mono_marshal_free_ccw_entry (gpointer key, gpointer value, gpointer user_data)
{
g_hash_table_remove (ccw_interface_hash, value);
g_assert (value);
g_free (value);
return TRUE;
}
/**
* mono_marshal_free_ccw:
* @object: the mono object
*
* Returns: whether the object had a CCW
*/
gboolean
mono_marshal_free_ccw (MonoObject* object)
{
GList *ccw_list, *ccw_list_orig, *ccw_list_item;
/* no ccw's were created */
if (!ccw_hash || g_hash_table_size (ccw_hash) == 0)
return FALSE;
/* need to cache orig list address to remove from hash_table if empty */
mono_cominterop_lock ();
ccw_list = ccw_list_orig = (GList *)g_hash_table_lookup (ccw_hash, GINT_TO_POINTER (mono_object_hash (object)));
mono_cominterop_unlock ();
if (!ccw_list)
return FALSE;
ccw_list_item = ccw_list;
while (ccw_list_item) {
MonoCCW* ccw_iter = (MonoCCW *)ccw_list_item->data;
MonoObject* handle_target = mono_gchandle_get_target (ccw_iter->gc_handle);
/* Looks like the GC NULLs the weakref handle target before running the
* finalizer. So if we get a NULL target, destroy the CCW as well.
* Unless looking up the object from the CCW shows it not the right object.
*/
gboolean destroy_ccw = !handle_target || handle_target == object;
if (!handle_target) {
MonoCCWInterface* ccw_entry = (MonoCCWInterface *)g_hash_table_lookup (ccw_iter->vtable_hash, mono_class_get_iunknown_class ());
if (!(ccw_entry && object == cominterop_get_ccw_object (ccw_entry, FALSE)))
destroy_ccw = FALSE;
}
if (destroy_ccw) {
/* remove all interfaces */
g_hash_table_foreach_remove (ccw_iter->vtable_hash, mono_marshal_free_ccw_entry, NULL);
g_hash_table_destroy (ccw_iter->vtable_hash);
/* get next before we delete */
ccw_list_item = g_list_next(ccw_list_item);
/* remove ccw from list */
ccw_list = g_list_remove (ccw_list, ccw_iter);
#ifdef HOST_WIN32
if (ccw_iter->free_marshaler)
ves_icall_System_Runtime_InteropServices_Marshal_ReleaseInternal (ccw_iter->free_marshaler);
#endif
g_free (ccw_iter);
}
else
ccw_list_item = g_list_next (ccw_list_item);
}
/* if list is empty remove original address from hash */
if (g_list_length (ccw_list) == 0)
g_hash_table_remove (ccw_hash, GINT_TO_POINTER (mono_object_hash (object)));
else if (ccw_list != ccw_list_orig)
g_hash_table_insert (ccw_hash, GINT_TO_POINTER (mono_object_hash (object)), ccw_list);
return TRUE;
}
/**
* cominterop_get_managed_wrapper_adjusted:
* @method: managed COM Interop method
*
* Returns: the generated method to call with signature matching
* the unmanaged COM Method signature
*/
static MonoMethod *
cominterop_get_managed_wrapper_adjusted (MonoMethod *method)
{
static MonoMethod *get_hr_for_exception = NULL;
MonoMethod *res = NULL;
MonoMethodBuilder *mb;
MonoMarshalSpec **mspecs;
MonoMethodSignature *sig, *sig_native;
MonoExceptionClause *main_clause = NULL;
int pos_leave;
int hr = 0;
int i;
gboolean preserve_sig = method->iflags & METHOD_IMPL_ATTRIBUTE_PRESERVE_SIG;
if (!get_hr_for_exception)
get_hr_for_exception = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetHRForException", -1);
sig = mono_method_signature (method);
/* create unmanaged wrapper */
mb = mono_mb_new (method->klass, method->name, MONO_WRAPPER_COMINTEROP);
sig_native = cominterop_method_signature (method);
mspecs = g_new0 (MonoMarshalSpec*, sig_native->param_count+1);
mono_method_get_marshal_info (method, mspecs);
/* move managed args up one */
for (i = sig->param_count; i >= 1; i--)
mspecs [i+1] = mspecs [i];
/* first arg is IntPtr for interface */
mspecs [1] = NULL;
/* move return spec to last param */
if (!preserve_sig && !MONO_TYPE_IS_VOID (sig->ret))
mspecs [sig_native->param_count] = mspecs [0];
mspecs [0] = NULL;
#ifndef DISABLE_JIT
if (!preserve_sig)
hr = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
else if (!MONO_TYPE_IS_VOID (sig->ret))
hr = mono_mb_add_local (mb, sig->ret);
/* try */
main_clause = g_new0 (MonoExceptionClause, 1);
main_clause->try_offset = mono_mb_get_label (mb);
/* load last param to store result if not preserve_sig and not void */
if (!preserve_sig && !MONO_TYPE_IS_VOID (sig->ret))
mono_mb_emit_ldarg (mb, sig_native->param_count-1);
/* the CCW -> object conversion */
mono_mb_emit_ldarg (mb, 0);
mono_mb_emit_icon (mb, FALSE);
mono_mb_emit_icall (mb, cominterop_get_ccw_object);
for (i = 0; i < sig->param_count; i++)
mono_mb_emit_ldarg (mb, i+1);
mono_mb_emit_managed_call (mb, method, NULL);
if (!MONO_TYPE_IS_VOID (sig->ret)) {
if (!preserve_sig) {
MonoClass *rclass = mono_class_from_mono_type (sig->ret);
if (rclass->valuetype) {
mono_mb_emit_op (mb, CEE_STOBJ, rclass);
} else {
mono_mb_emit_byte (mb, mono_type_to_stind (sig->ret));
}
} else
mono_mb_emit_stloc (mb, hr);
}
pos_leave = mono_mb_emit_branch (mb, CEE_LEAVE);
/* Main exception catch */
main_clause->flags = MONO_EXCEPTION_CLAUSE_NONE;
main_clause->try_len = mono_mb_get_pos (mb) - main_clause->try_offset;
main_clause->data.catch_class = mono_defaults.object_class;
/* handler code */
main_clause->handler_offset = mono_mb_get_label (mb);
if (!preserve_sig || (sig->ret && !sig->ret->byref && (sig->ret->type == MONO_TYPE_U4 || sig->ret->type == MONO_TYPE_I4))) {
mono_mb_emit_managed_call (mb, get_hr_for_exception, NULL);
mono_mb_emit_stloc (mb, hr);
}
else {
mono_mb_emit_byte (mb, CEE_POP);
}
mono_mb_emit_branch (mb, CEE_LEAVE);
main_clause->handler_len = mono_mb_get_pos (mb) - main_clause->handler_offset;
/* end catch */
mono_mb_set_clauses (mb, 1, main_clause);
mono_mb_patch_branch (mb, pos_leave);
if (!preserve_sig || !MONO_TYPE_IS_VOID (sig->ret))
mono_mb_emit_ldloc (mb, hr);
mono_mb_emit_byte (mb, CEE_RET);
#endif /* DISABLE_JIT */
mono_cominterop_lock ();
res = mono_mb_create_method (mb, sig_native, sig_native->param_count + 16);
mono_cominterop_unlock ();
mono_mb_free (mb);
for (i = sig_native->param_count; i >= 0; i--)
if (mspecs [i])
mono_metadata_free_marshal_spec (mspecs [i]);
g_free (mspecs);
return res;
}
/**
* cominterop_mono_string_to_guid:
*
* Converts the standard string representation of a GUID
* to a 16 byte Microsoft GUID.
*/
static void
cominterop_mono_string_to_guid (MonoString* string, guint8 *guid) {
gunichar2 * chars = mono_string_chars (string);
int i = 0;
static guint8 indexes[16] = {7, 5, 3, 1, 12, 10, 17, 15, 20, 22, 25, 27, 29, 31, 33, 35};
for (i = 0; i < sizeof(indexes); i++)
guid [i] = g_unichar_xdigit_value (chars [indexes [i]]) + (g_unichar_xdigit_value (chars [indexes [i] - 1]) << 4);
}
static gboolean
cominterop_class_guid_equal (guint8* guid, MonoClass* klass)
{
guint8 klass_guid [16];
if (cominterop_class_guid (klass, klass_guid))
return !memcmp (guid, klass_guid, sizeof (klass_guid));
return FALSE;
}
static int STDCALL
cominterop_ccw_addref (MonoCCWInterface* ccwe)
{
gint32 ref_count = 0;
MonoCCW* ccw = ccwe->ccw;
g_assert (ccw);
g_assert (ccw->gc_handle);
ref_count = InterlockedIncrement ((gint32*)&ccw->ref_count);
if (ref_count == 1) {
guint32 oldhandle = ccw->gc_handle;
g_assert (oldhandle);
/* since we now have a ref count, alloc a strong handle*/
ccw->gc_handle = mono_gchandle_new (mono_gchandle_get_target (oldhandle), FALSE);
mono_gchandle_free (oldhandle);
}
return ref_count;
}
static int STDCALL
cominterop_ccw_release (MonoCCWInterface* ccwe)
{
gint32 ref_count = 0;
MonoCCW* ccw = ccwe->ccw;
g_assert (ccw);
g_assert (ccw->ref_count > 0);
ref_count = InterlockedDecrement ((gint32*)&ccw->ref_count);
if (ref_count == 0) {
/* allow gc of object */
guint32 oldhandle = ccw->gc_handle;
g_assert (oldhandle);
ccw->gc_handle = mono_gchandle_new_weakref (mono_gchandle_get_target (oldhandle), FALSE);
mono_gchandle_free (oldhandle);
}
return ref_count;
}
#ifdef HOST_WIN32
static const IID MONO_IID_IMarshal = {0x3, 0x0, 0x0, {0xC0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x46}};
#endif
#ifdef HOST_WIN32
/* All ccw objects are free threaded */
static int
cominterop_ccw_getfreethreadedmarshaler (MonoCCW* ccw, MonoObject* object, gpointer* ppv, MonoError *error)
{
mono_error_init (error);
#ifdef HOST_WIN32
if (!ccw->free_marshaler) {
int ret = 0;
gpointer tunk;
tunk = cominterop_get_ccw_checked (object, mono_class_get_iunknown_class (), error);
return_val_if_nok (error, MONO_E_NOINTERFACE);
ret = CoCreateFreeThreadedMarshaler (tunk, (LPUNKNOWN*)&ccw->free_marshaler);
}
if (!ccw->free_marshaler)
return MONO_E_NOINTERFACE;
return ves_icall_System_Runtime_InteropServices_Marshal_QueryInterfaceInternal (ccw->free_marshaler, (IID*)&MONO_IID_IMarshal, ppv);
#else
return MONO_E_NOINTERFACE;
#endif
}
#endif
static int STDCALL
cominterop_ccw_queryinterface (MonoCCWInterface* ccwe, guint8* riid, gpointer* ppv)
{
MonoError error;
GPtrArray *ifaces;
MonoClass *itf = NULL;
int i;
MonoCCW* ccw = ccwe->ccw;
MonoClass* klass = NULL;
MonoClass* klass_iter = NULL;
MonoObject* object = mono_gchandle_get_target (ccw->gc_handle);
g_assert (object);
klass = mono_object_class (object);
if (ppv)
*ppv = NULL;
if (!mono_domain_get ())
mono_thread_attach (mono_get_root_domain ());
/* handle IUnknown special */
if (cominterop_class_guid_equal (riid, mono_class_get_iunknown_class ())) {
*ppv = cominterop_get_ccw_checked (object, mono_class_get_iunknown_class (), &error);
mono_error_assert_ok (&error);
/* remember to addref on QI */
cominterop_ccw_addref ((MonoCCWInterface *)*ppv);
return MONO_S_OK;
}
/* handle IDispatch special */
if (cominterop_class_guid_equal (riid, mono_class_get_idispatch_class ())) {
if (!cominterop_can_support_dispatch (klass))
return MONO_E_NOINTERFACE;
*ppv = cominterop_get_ccw_checked (object, mono_class_get_idispatch_class (), &error);
mono_error_assert_ok (&error);
/* remember to addref on QI */
cominterop_ccw_addref ((MonoCCWInterface *)*ppv);
return MONO_S_OK;
}
#ifdef HOST_WIN32
/* handle IMarshal special */
if (0 == memcmp (riid, &MONO_IID_IMarshal, sizeof (IID))) {
int res = cominterop_ccw_getfreethreadedmarshaler (ccw, object, ppv, &error);
mono_error_assert_ok (&error);
return res;
}
#endif
klass_iter = klass;
while (klass_iter && klass_iter != mono_defaults.object_class) {
ifaces = mono_class_get_implemented_interfaces (klass_iter, &error);
g_assert (mono_error_ok (&error));
if (ifaces) {
for (i = 0; i < ifaces->len; ++i) {
MonoClass *ic = NULL;
ic = (MonoClass *)g_ptr_array_index (ifaces, i);
if (cominterop_class_guid_equal (riid, ic)) {
itf = ic;
break;
}
}
g_ptr_array_free (ifaces, TRUE);
}
if (itf)
break;
klass_iter = klass_iter->parent;
}
if (itf) {
*ppv = cominterop_get_ccw_checked (object, itf, &error);
if (!is_ok (&error)) {
mono_error_cleanup (&error); /* FIXME don't swallow the error */
return MONO_E_NOINTERFACE;
}
/* remember to addref on QI */
cominterop_ccw_addref ((MonoCCWInterface *)*ppv);
return MONO_S_OK;
}
return MONO_E_NOINTERFACE;
}
static int STDCALL
cominterop_ccw_get_type_info_count (MonoCCWInterface* ccwe, guint32 *pctinfo)
{
if(!pctinfo)
return MONO_E_INVALIDARG;
*pctinfo = 1;
return MONO_S_OK;
}
static int STDCALL
cominterop_ccw_get_type_info (MonoCCWInterface* ccwe, guint32 iTInfo, guint32 lcid, gpointer *ppTInfo)
{
return MONO_E_NOTIMPL;
}
static int STDCALL
cominterop_ccw_get_ids_of_names (MonoCCWInterface* ccwe, gpointer riid,
gunichar2** rgszNames, guint32 cNames,
guint32 lcid, gint32 *rgDispId)
{
static MonoClass *ComDispIdAttribute = NULL;
MonoError error;
MonoCustomAttrInfo *cinfo = NULL;
int i,ret = MONO_S_OK;
MonoMethod* method;
gchar* methodname;
MonoClass *klass = NULL;
MonoCCW* ccw = ccwe->ccw;
MonoObject* object = mono_gchandle_get_target (ccw->gc_handle);
/* Handle DispIdAttribute */
if (!ComDispIdAttribute)
ComDispIdAttribute = mono_class_load_from_name (mono_defaults.corlib, "System.Runtime.InteropServices", "DispIdAttribute");
g_assert (object);
klass = mono_object_class (object);
if (!mono_domain_get ())
mono_thread_attach (mono_get_root_domain ());
for (i=0; i < cNames; i++) {
methodname = mono_unicode_to_external (rgszNames[i]);
method = mono_class_get_method_from_name(klass, methodname, -1);
if (method) {
cinfo = mono_custom_attrs_from_method_checked (method, &error);
mono_error_assert_ok (&error); /* FIXME what's reasonable to do here */
if (cinfo) {
MonoObject *result = mono_custom_attrs_get_attr_checked (cinfo, ComDispIdAttribute, &error);
g_assert (mono_error_ok (&error)); /*FIXME proper error handling*/;
if (result)
rgDispId[i] = *(gint32*)mono_object_unbox (result);
else
rgDispId[i] = (gint32)method->token;
if (!cinfo->cached)
mono_custom_attrs_free (cinfo);
}
else
rgDispId[i] = (gint32)method->token;
} else {
rgDispId[i] = MONO_E_DISPID_UNKNOWN;
ret = MONO_E_DISP_E_UNKNOWNNAME;
}
}
return ret;
}
static int STDCALL
cominterop_ccw_invoke (MonoCCWInterface* ccwe, guint32 dispIdMember,
gpointer riid, guint32 lcid,
guint16 wFlags, gpointer pDispParams,
gpointer pVarResult, gpointer pExcepInfo,
guint32 *puArgErr)
{
return MONO_E_NOTIMPL;
}
typedef gpointer (STDCALL *SysAllocStringLenFunc)(gunichar* str, guint32 len);
typedef guint32 (STDCALL *SysStringLenFunc)(gpointer bstr);
typedef void (STDCALL *SysFreeStringFunc)(gunichar* str);
static SysAllocStringLenFunc sys_alloc_string_len_ms = NULL;
static SysStringLenFunc sys_string_len_ms = NULL;
static SysFreeStringFunc sys_free_string_ms = NULL;
#ifndef HOST_WIN32
typedef struct tagSAFEARRAYBOUND {
ULONG cElements;
LONG lLbound;
}SAFEARRAYBOUND,*LPSAFEARRAYBOUND;
#define VT_VARIANT 12
#endif
typedef guint32 (STDCALL *SafeArrayGetDimFunc)(gpointer psa);
typedef int (STDCALL *SafeArrayGetLBoundFunc)(gpointer psa, guint32 nDim, glong* plLbound);
typedef int (STDCALL *SafeArrayGetUBoundFunc)(gpointer psa, guint32 nDim, glong* plUbound);
typedef int (STDCALL *SafeArrayPtrOfIndexFunc)(gpointer psa, glong* rgIndices, gpointer* ppvData);
typedef int (STDCALL *SafeArrayDestroyFunc)(gpointer psa);
typedef int (STDCALL *SafeArrayPutElementFunc)(gpointer psa, glong* rgIndices, gpointer* ppvData);
typedef gpointer (STDCALL *SafeArrayCreateFunc)(int vt, guint32 cDims, SAFEARRAYBOUND* rgsabound);
static SafeArrayGetDimFunc safe_array_get_dim_ms = NULL;
static SafeArrayGetLBoundFunc safe_array_get_lbound_ms = NULL;
static SafeArrayGetUBoundFunc safe_array_get_ubound_ms = NULL;
static SafeArrayPtrOfIndexFunc safe_array_ptr_of_index_ms = NULL;
static SafeArrayDestroyFunc safe_array_destroy_ms = NULL;
static SafeArrayPutElementFunc safe_array_put_element_ms = NULL;
static SafeArrayCreateFunc safe_array_create_ms = NULL;
static gboolean
init_com_provider_ms (void)
{
static gboolean initialized = FALSE;
char *error_msg;
MonoDl *module = NULL;
const char* scope = "liboleaut32.so";
if (initialized)
return TRUE;
module = mono_dl_open(scope, MONO_DL_LAZY, &error_msg);
if (error_msg) {
g_warning ("Error loading COM support library '%s': %s", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SysAllocStringLen", (gpointer*)&sys_alloc_string_len_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SysAllocStringLen", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SysStringLen", (gpointer*)&sys_string_len_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SysStringLen", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SysFreeString", (gpointer*)&sys_free_string_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SysFreeString", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SafeArrayGetDim", (gpointer*)&safe_array_get_dim_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SafeArrayGetDim", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SafeArrayGetLBound", (gpointer*)&safe_array_get_lbound_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SafeArrayGetLBound", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SafeArrayGetUBound", (gpointer*)&safe_array_get_ubound_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SafeArrayGetUBound", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SafeArrayPtrOfIndex", (gpointer*)&safe_array_ptr_of_index_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SafeArrayPtrOfIndex", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SafeArrayDestroy", (gpointer*)&safe_array_destroy_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SafeArrayDestroy", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SafeArrayPutElement", (gpointer*)&safe_array_put_element_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SafeArrayPutElement", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
error_msg = mono_dl_symbol (module, "SafeArrayCreate", (gpointer*)&safe_array_create_ms);
if (error_msg) {
g_warning ("Error loading entry point '%s' in COM support library '%s': %s", "SafeArrayCreate", scope, error_msg);
g_assert_not_reached ();
return FALSE;
}
initialized = TRUE;
return TRUE;
}
gpointer
mono_ptr_to_bstr(gpointer ptr, int slen)
{
if (!ptr)
return NULL;
#ifdef HOST_WIN32
return SysAllocStringLen (ptr, slen);
#else
if (com_provider == MONO_COM_DEFAULT) {
/* allocate len + 1 utf16 characters plus 4 byte integer for length*/
char *ret = (char *)g_malloc((slen + 1) * sizeof(gunichar2) + sizeof(guint32));
if (ret == NULL)
return NULL;
memcpy(ret + sizeof(guint32), ptr, slen * sizeof(gunichar2));
*((guint32 *)ret) = slen * sizeof(gunichar2);
ret[4 + slen * sizeof(gunichar2)] = 0;
ret[5 + slen * sizeof(gunichar2)] = 0;
return ret + 4;
}
else if (com_provider == MONO_COM_MS && init_com_provider_ms()) {
gpointer ret = NULL;
gunichar* str = NULL;
guint32 len = slen;
str = g_utf16_to_ucs4(ptr, len,
NULL, NULL, NULL);
ret = sys_alloc_string_len_ms(str, len);
g_free(str);
return ret;
}
else {
g_assert_not_reached();
}
#endif
}
MonoString *
mono_string_from_bstr (gpointer bstr)
{
MonoError error;
MonoString *result = mono_string_from_bstr_checked (bstr, &error);
mono_error_cleanup (&error);
return result;
}
MonoString *
mono_string_from_bstr_icall (gpointer bstr)
{
MonoError error;
MonoString *result = mono_string_from_bstr_checked (bstr, &error);
mono_error_set_pending_exception (&error);
return result;
}
MonoString *
mono_string_from_bstr_checked (gpointer bstr, MonoError *error)
{
MonoString * res = NULL;
mono_error_init (error);
if (!bstr)
return NULL;
#ifdef HOST_WIN32
res = mono_string_new_utf16_checked (mono_domain_get (), bstr, SysStringLen (bstr), error);
#else
if (com_provider == MONO_COM_DEFAULT) {
res = mono_string_new_utf16_checked (mono_domain_get (), (const mono_unichar2 *)bstr, *((guint32 *)bstr - 1) / sizeof(gunichar2), error);
} else if (com_provider == MONO_COM_MS && init_com_provider_ms ()) {
MonoString* str = NULL;
glong written = 0;
gunichar2* utf16 = NULL;
utf16 = g_ucs4_to_utf16 ((const gunichar *)bstr, sys_string_len_ms (bstr), NULL, &written, NULL);
str = mono_string_new_utf16_checked (mono_domain_get (), utf16, written, error);
g_free (utf16);
res = str;
} else {
g_assert_not_reached ();
}
#endif
return res;
}
void
mono_free_bstr (gpointer bstr)
{
if (!bstr)
return;
#ifdef HOST_WIN32
SysFreeString ((BSTR)bstr);
#else
if (com_provider == MONO_COM_DEFAULT) {
g_free (((char *)bstr) - 4);
} else if (com_provider == MONO_COM_MS && init_com_provider_ms ()) {
sys_free_string_ms ((gunichar *)bstr);
} else {
g_assert_not_reached ();
}
#endif
}
/* SAFEARRAY marshalling */
int
mono_cominterop_emit_marshal_safearray (EmitMarshalContext *m, int argnum, MonoType *t,
MonoMarshalSpec *spec,
int conv_arg, MonoType **conv_arg_type,
MarshalAction action)
{
MonoMethodBuilder *mb = m->mb;
#ifndef DISABLE_JIT
switch (action) {
case MARSHAL_ACTION_CONV_IN: {
if (t->attrs & PARAM_ATTRIBUTE_IN) {
/* Generates IL code for the following algorithm:
SafeArray safearray; // safearray_var
IntPtr indices; // indices_var
int empty; // empty_var
if (mono_marshal_safearray_create (array, out safearray, out indices, out empty)) {
if (!empty) {
int index=0; // index_var
do { // label3
variant elem = Marshal.GetNativeVariantForObject (array.GetValueImpl(index));
mono_marshal_safearray_set_value (safearray, indices, elem);
++index;
}
while (mono_marshal_safearray_next (safearray, indices));
} // label2
mono_marshal_safearray_free_indices (indices);
} // label1
*/
int safearray_var, indices_var, empty_var, elem_var, index_var;
guint32 label1 = 0, label2 = 0, label3 = 0;
static MonoMethod *get_native_variant_for_object = NULL;
static MonoMethod *get_value_impl = NULL;
static MonoMethod *variant_clear = NULL;
conv_arg = safearray_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
indices_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
empty_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
if (t->byref) {
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_byte (mb, CEE_LDIND_REF);
} else
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_ldloc_addr (mb, safearray_var);
mono_mb_emit_ldloc_addr (mb, indices_var);
mono_mb_emit_ldloc_addr (mb, empty_var);
mono_mb_emit_icall (mb, mono_marshal_safearray_create);
label1 = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
mono_mb_emit_ldloc (mb, empty_var);
label2 = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
index_var = mono_mb_add_local (mb, &mono_defaults.int32_class->byval_arg);
mono_mb_emit_byte (mb, CEE_LDC_I4_0);
mono_mb_emit_stloc (mb, index_var);
label3 = mono_mb_get_label (mb);
if (!get_value_impl)
get_value_impl = mono_class_get_method_from_name (mono_defaults.array_class, "GetValueImpl", 1);
g_assert (get_value_impl);
if (t->byref) {
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_byte (mb, CEE_LDIND_REF);
} else
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_ldloc (mb, index_var);
mono_mb_emit_managed_call (mb, get_value_impl, NULL);
if (!get_native_variant_for_object)
get_native_variant_for_object = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetNativeVariantForObject", 2);
g_assert (get_native_variant_for_object);
elem_var = mono_mb_add_local (mb, &mono_class_get_variant_class ()->byval_arg);
mono_mb_emit_ldloc_addr (mb, elem_var);
mono_mb_emit_managed_call (mb, get_native_variant_for_object, NULL);
mono_mb_emit_ldloc (mb, safearray_var);
mono_mb_emit_ldloc (mb, indices_var);
mono_mb_emit_ldloc_addr (mb, elem_var);
mono_mb_emit_icall (mb, mono_marshal_safearray_set_value);
if (!variant_clear)
variant_clear = mono_class_get_method_from_name (mono_class_get_variant_class (), "Clear", 0);
mono_mb_emit_ldloc_addr (mb, elem_var);
mono_mb_emit_managed_call (mb, variant_clear, NULL);
mono_mb_emit_add_to_local (mb, index_var, 1);
mono_mb_emit_ldloc (mb, safearray_var);
mono_mb_emit_ldloc (mb, indices_var);
mono_mb_emit_icall (mb, mono_marshal_safearray_next);
mono_mb_emit_branch_label (mb, CEE_BRTRUE, label3);
mono_mb_patch_short_branch (mb, label2);
mono_mb_emit_ldloc (mb, indices_var);
mono_mb_emit_icall (mb, mono_marshal_safearray_free_indices);
mono_mb_patch_short_branch (mb, label1);
}
break;
}
case MARSHAL_ACTION_PUSH:
if (t->byref)
mono_mb_emit_ldloc_addr (mb, conv_arg);
else
mono_mb_emit_ldloc (mb, conv_arg);
break;
case MARSHAL_ACTION_CONV_OUT: {
if (t->attrs & PARAM_ATTRIBUTE_OUT) {
/* Generates IL code for the following algorithm:
Array result; // result_var
IntPtr indices; // indices_var
int empty; // empty_var
bool byValue = !t->byref && (t->attrs & PARAM_ATTRIBUTE_IN);
if (mono_marshal_safearray_begin(safearray, out result, out indices, out empty, parameter, byValue)) {
if (!empty) {
int index=0; // index_var
do { // label3
if (!byValue || (index < parameter.Length)) {
object elem = Variant.GetObjectForNativeVariant(mono_marshal_safearray_get_value(safearray, indices));
result.SetValueImpl(elem, index);
}
++index;
}
while (mono_marshal_safearray_next(safearray, indices));
} // label2
mono_marshal_safearray_end(safearray, indices);
} // label1
if (!byValue)
return result;
*/
int result_var, indices_var, empty_var, elem_var, index_var;
guint32 label1 = 0, label2 = 0, label3 = 0, label4 = 0;
static MonoMethod *get_object_for_native_variant = NULL;
static MonoMethod *set_value_impl = NULL;
gboolean byValue = !t->byref && (t->attrs & PARAM_ATTRIBUTE_IN);
result_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
indices_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
empty_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
mono_mb_emit_ldloc (mb, conv_arg);
mono_mb_emit_ldloc_addr (mb, result_var);
mono_mb_emit_ldloc_addr (mb, indices_var);
mono_mb_emit_ldloc_addr (mb, empty_var);
mono_mb_emit_ldarg (mb, argnum);
if (byValue)
mono_mb_emit_byte (mb, CEE_LDC_I4_0);
else
mono_mb_emit_byte (mb, CEE_LDC_I4_1);
mono_mb_emit_icall (mb, mono_marshal_safearray_begin);
label1 = mono_mb_emit_short_branch (mb, CEE_BRFALSE_S);
mono_mb_emit_ldloc (mb, empty_var);
label2 = mono_mb_emit_short_branch (mb, CEE_BRTRUE_S);
index_var = mono_mb_add_local (mb, &mono_defaults.int_class->byval_arg);
mono_mb_emit_byte (mb, CEE_LDC_I4_0);
mono_mb_emit_stloc (mb, index_var);
label3 = mono_mb_get_label (mb);
if (byValue) {
mono_mb_emit_ldloc (mb, index_var);
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_byte (mb, CEE_LDLEN);
label4 = mono_mb_emit_branch (mb, CEE_BGE);
}
mono_mb_emit_ldloc (mb, conv_arg);
mono_mb_emit_ldloc (mb, indices_var);
mono_mb_emit_icall (mb, mono_marshal_safearray_get_value);
if (!get_object_for_native_variant)
get_object_for_native_variant = mono_class_get_method_from_name (mono_defaults.marshal_class, "GetObjectForNativeVariant", 1);
g_assert (get_object_for_native_variant);
if (!set_value_impl)
set_value_impl = mono_class_get_method_from_name (mono_defaults.array_class, "SetValueImpl", 2);
g_assert (set_value_impl);
elem_var = mono_mb_add_local (mb, &mono_defaults.object_class->byval_arg);
mono_mb_emit_managed_call (mb, get_object_for_native_variant, NULL);
mono_mb_emit_stloc (mb, elem_var);
mono_mb_emit_ldloc (mb, result_var);
mono_mb_emit_ldloc (mb, elem_var);
mono_mb_emit_ldloc (mb, index_var);
mono_mb_emit_managed_call (mb, set_value_impl, NULL);
if (byValue)
mono_mb_patch_short_branch (mb, label4);
mono_mb_emit_add_to_local (mb, index_var, 1);
mono_mb_emit_ldloc (mb, conv_arg);
mono_mb_emit_ldloc (mb, indices_var);
mono_mb_emit_icall (mb, mono_marshal_safearray_next);
mono_mb_emit_branch_label (mb, CEE_BRTRUE, label3);
mono_mb_patch_short_branch (mb, label2);
mono_mb_emit_ldloc (mb, conv_arg);
mono_mb_emit_ldloc (mb, indices_var);
mono_mb_emit_icall (mb, mono_marshal_safearray_end);
mono_mb_patch_short_branch (mb, label1);
if (!byValue) {
mono_mb_emit_ldarg (mb, argnum);
mono_mb_emit_ldloc (mb, result_var);
mono_mb_emit_byte (mb, CEE_STIND_REF);
}
}
break;
}
default:
g_assert_not_reached ();
}
#endif /* DISABLE_JIT */
return conv_arg;
}
static
guint32 mono_marshal_safearray_get_dim (gpointer safearray)
{
guint32 result=0;
#ifdef HOST_WIN32
result = SafeArrayGetDim (safearray);
#else
if (com_provider == MONO_COM_MS && init_com_provider_ms ()) {
result = safe_array_get_dim_ms (safearray);
} else {
g_assert_not_reached ();
}
#endif
return result;
}
static
int mono_marshal_safe_array_get_lbound (gpointer psa, guint nDim, glong* plLbound)
{
int result=MONO_S_OK;
#ifdef HOST_WIN32
result = SafeArrayGetLBound (psa, nDim, plLbound);
#else
if (com_provider == MONO_COM_MS && init_com_provider_ms ()) {
result = safe_array_get_lbound_ms (psa, nDim, plLbound);
} else {
g_assert_not_reached ();
}
#endif
return result;
}
static
int mono_marshal_safe_array_get_ubound (gpointer psa, guint nDim, glong* plUbound)
{
int result=MONO_S_OK;
#ifdef HOST_WIN32
result = SafeArrayGetUBound (psa, nDim, plUbound);
#else
if (com_provider == MONO_COM_MS && init_com_provider_ms ()) {
result = safe_array_get_ubound_ms (psa, nDim, plUbound);
} else {
g_assert_not_reached ();
}
#endif
return result;
}
/* This is an icall */
static gboolean
mono_marshal_safearray_begin (gpointer safearray, MonoArray **result, gpointer *indices, gpointer empty, gpointer parameter, gboolean allocateNewArray)
{
MonoError error;
int dim;
uintptr_t *sizes;
intptr_t *bounds;
MonoClass *aklass;
int i;
gboolean bounded = FALSE;
#ifndef HOST_WIN32
// If not on windows, check that the MS provider is used as it is
// required for SAFEARRAY support.
// If SAFEARRAYs are not supported, returning FALSE from this
// function will prevent the other mono_marshal_safearray_xxx functions
// from being called.
if ((com_provider != MONO_COM_MS) || !init_com_provider_ms ()) {
return FALSE;
}
#endif
(*(int*)empty) = TRUE;
if (safearray != NULL) {
dim = mono_marshal_safearray_get_dim (safearray);
if (dim > 0) {
*indices = g_malloc (dim * sizeof(int));
sizes = (uintptr_t *)alloca (dim * sizeof(uintptr_t));
bounds = (intptr_t *)alloca (dim * sizeof(intptr_t));
for (i=0; i<dim; ++i) {
glong lbound, ubound;
int cursize;
int hr;
hr = mono_marshal_safe_array_get_lbound (safearray, i+1, &lbound);
if (hr < 0) {
cominterop_set_hr_error (&error, hr);
if (mono_error_set_pending_exception (&error))
return FALSE;
}
if (lbound != 0)
bounded = TRUE;
hr = mono_marshal_safe_array_get_ubound (safearray, i+1, &ubound);
if (hr < 0) {
cominterop_set_hr_error (&error, hr);
if (mono_error_set_pending_exception (&error))
return FALSE;
}
cursize = ubound-lbound+1;
sizes [i] = cursize;
bounds [i] = lbound;
((int*)*indices) [i] = lbound;
if (cursize != 0)
(*(int*)empty) = FALSE;
}
if (allocateNewArray) {
aklass = mono_bounded_array_class_get (mono_defaults.object_class, dim, bounded);
*result = mono_array_new_full_checked (mono_domain_get (), aklass, sizes, bounds, &error);
if (mono_error_set_pending_exception (&error))
return FALSE;
} else {
*result = (MonoArray *)parameter;
}
}
}
return TRUE;
}
/* This is an icall */
static
gpointer mono_marshal_safearray_get_value (gpointer safearray, gpointer indices)
{
MonoError error;
gpointer result;
#ifdef HOST_WIN32
int hr = SafeArrayPtrOfIndex (safearray, indices, &result);
if (hr < 0) {
cominterop_set_hr_error (&error, hr);
mono_error_set_pending_exception (&error);
return NULL;
}
#else
if (com_provider == MONO_COM_MS && init_com_provider_ms ()) {
int hr = safe_array_ptr_of_index_ms (safearray, (glong *)indices, &result);
if (hr < 0) {
cominterop_set_hr_error (&error, hr);
mono_error_set_pending_exception (&error);
return NULL;
}
} else {
g_assert_not_reached ();
}
#endif
return result;