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Sweden-Number/tools/widl/proxy.c

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/*
* IDL Compiler
*
* Copyright 2002 Ove Kaaven
* Copyright 2004 Mike McCormack
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <string.h>
#include <assert.h>
#include <ctype.h>
#include <signal.h>
#include "widl.h"
#include "utils.h"
#include "parser.h"
#include "header.h"
#include "typegen.h"
#define END_OF_LIST(list) \
do { \
if (list) { \
while (NEXT_LINK(list)) \
list = NEXT_LINK(list); \
} \
} while(0)
static FILE* proxy;
static int indent = 0;
/* FIXME: support generation of stubless proxies */
static void print_proxy( const char *format, ... )
{
va_list va;
va_start( va, format );
print( proxy, indent, format, va );
va_end( va );
}
static void write_stubdescproto(void)
{
print_proxy( "static const MIDL_STUB_DESC Object_StubDesc;\n");
print_proxy( "\n");
}
static void write_stubdesc(int expr_eval_routines)
{
print_proxy( "static const MIDL_STUB_DESC Object_StubDesc =\n{\n");
indent++;
print_proxy( "0,\n");
print_proxy( "NdrOleAllocate,\n");
print_proxy( "NdrOleFree,\n");
print_proxy( "{0}, 0, 0, %s, 0,\n", expr_eval_routines ? "ExprEvalRoutines" : "0");
print_proxy( "__MIDL_TypeFormatString.Format,\n");
print_proxy( "1, /* -error bounds_check flag */\n");
print_proxy( "0x10001, /* Ndr library version */\n");
print_proxy( "0,\n");
print_proxy( "0x50100a4, /* MIDL Version 5.1.164 */\n");
print_proxy( "0,\n");
print_proxy("%s,\n", list_empty(&user_type_list) ? "0" : "UserMarshalRoutines");
print_proxy( "0, /* notify & notify_flag routine table */\n");
print_proxy( "1, /* Flags */\n");
print_proxy( "0, /* Reserved3 */\n");
print_proxy( "0, /* Reserved4 */\n");
print_proxy( "0 /* Reserved5 */\n");
indent--;
print_proxy( "};\n");
print_proxy( "\n");
}
static void init_proxy(ifref_list_t *ifaces)
{
if (proxy) return;
if(!(proxy = fopen(proxy_name, "w")))
error("Could not open %s for output\n", proxy_name);
print_proxy( "/*** Autogenerated by WIDL %s from %s - Do not edit ***/\n", PACKAGE_VERSION, input_name);
print_proxy( "\n");
print_proxy( "#ifndef __REDQ_RPCPROXY_H_VERSION__\n");
print_proxy( "#define __REQUIRED_RPCPROXY_H_VERSION__ 440\n");
print_proxy( "#endif /* __REDQ_RPCPROXY_H_VERSION__ */\n");
print_proxy( "\n");
print_proxy( "#define __midl_proxy\n");
print_proxy( "#include \"objbase.h\"\n");
print_proxy( "#include \"rpcproxy.h\"\n");
print_proxy( "#ifndef __RPCPROXY_H_VERSION__\n");
print_proxy( "#error This code needs a newer version of rpcproxy.h\n");
print_proxy( "#endif /* __RPCPROXY_H_VERSION__ */\n");
print_proxy( "\n");
print_proxy( "#include \"%s\"\n", header_name);
print_proxy( "\n");
write_formatstringsdecl(proxy, indent, ifaces, need_proxy);
write_stubdescproto();
}
static void clear_output_vars( const var_list_t *args )
{
const var_t *arg;
if (!args) return;
LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
{
if (is_attr(arg->attrs, ATTR_OUT) && !is_attr(arg->attrs, ATTR_IN)) {
print_proxy( "if(%s)\n", arg->name );
indent++;
print_proxy( "MIDL_memset( %s, 0, sizeof( *%s ));\n", arg->name, arg->name );
indent--;
}
}
}
int is_var_ptr(const var_t *v)
{
return is_ptr(v->type);
}
int cant_be_null(const var_t *v)
{
/* Search backwards for the most recent pointer attribute. */
const attr_list_t *attrs = v->attrs;
const type_t *type = v->type;
if (! attrs && type)
{
attrs = type->attrs;
type = type->ref;
}
while (attrs)
{
int t = get_attrv(attrs, ATTR_POINTERTYPE);
if (t == RPC_FC_FP || t == RPC_FC_OP || t == RPC_FC_UP)
return 0;
if (t == RPC_FC_RP)
return 1;
if (type)
{
attrs = type->attrs;
type = type->ref;
}
else
attrs = NULL;
}
return 1; /* Default is RPC_FC_RP. */
}
static void proxy_check_pointers( const var_list_t *args )
{
const var_t *arg;
if (!args) return;
LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
{
if (is_var_ptr(arg) && cant_be_null(arg)) {
print_proxy( "if(!%s)\n", arg->name );
indent++;
print_proxy( "RpcRaiseException(RPC_X_NULL_REF_POINTER);\n");
indent--;
}
}
}
static void free_variable( const var_t *arg )
{
unsigned int type_offset = arg->type->typestring_offset;
expr_t *iid;
type_t *type = arg->type;
expr_t *size = get_size_is_expr(type, arg->name);
if (size)
{
print_proxy( "_StubMsg.MaxCount = " );
write_expr(proxy, size, 0);
fprintf(proxy, ";\n\n");
print_proxy( "NdrClearOutParameters( &_StubMsg, ");
fprintf(proxy, "&__MIDL_TypeFormatString.Format[%u], ", type_offset );
fprintf(proxy, "(void*)%s );\n", arg->name );
return;
}
switch( type->type )
{
case RPC_FC_BYTE:
case RPC_FC_CHAR:
case RPC_FC_WCHAR:
case RPC_FC_SHORT:
case RPC_FC_USHORT:
case RPC_FC_ENUM16:
case RPC_FC_LONG:
case RPC_FC_ULONG:
case RPC_FC_ENUM32:
case RPC_FC_STRUCT:
break;
case RPC_FC_FP:
case RPC_FC_IP:
iid = get_attrp( arg->attrs, ATTR_IIDIS );
if( iid )
{
print_proxy( "_StubMsg.MaxCount = (unsigned long) " );
write_expr(proxy, iid, 1);
print_proxy( ";\n\n" );
}
print_proxy( "NdrClearOutParameters( &_StubMsg, ");
fprintf(proxy, "&__MIDL_TypeFormatString.Format[%u], ", type_offset );
fprintf(proxy, "(void*)%s );\n", arg->name );
break;
default:
print_proxy("/* FIXME: %s code for %s type %d missing */\n", __FUNCTION__, arg->name, type->type );
}
}
static void proxy_free_variables( var_list_t *args )
{
const var_t *arg;
if (!args) return;
LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
if (is_attr(arg->attrs, ATTR_OUT))
{
free_variable( arg );
fprintf(proxy, "\n");
}
}
static void gen_proxy(type_t *iface, const func_t *cur, int idx,
unsigned int proc_offset)
{
var_t *def = cur->def;
int has_ret = !is_void(def->type);
indent = 0;
write_type_decl_left(proxy, def->type);
print_proxy( " STDMETHODCALLTYPE %s_", iface->name);
write_name(proxy, def);
print_proxy( "_Proxy(\n");
write_args(proxy, cur->args, iface->name, 1, TRUE);
print_proxy( ")\n");
print_proxy( "{\n");
indent ++;
/* local variables */
if (has_ret) {
print_proxy( "" );
write_type_decl_left(proxy, def->type);
print_proxy( " _RetVal;\n");
}
print_proxy( "RPC_MESSAGE _RpcMessage;\n" );
print_proxy( "MIDL_STUB_MESSAGE _StubMsg;\n" );
if (has_ret) {
if (decl_indirect(def->type))
print_proxy("void *_p_%s = &%s;\n",
"_RetVal", "_RetVal");
}
print_proxy( "\n");
/* FIXME: trace */
clear_output_vars( cur->args );
print_proxy( "RpcTryExcept\n" );
print_proxy( "{\n" );
indent++;
print_proxy( "NdrProxyInitialize(This, &_RpcMessage, &_StubMsg, &Object_StubDesc, %d);\n", idx);
proxy_check_pointers( cur->args );
print_proxy( "RpcTryFinally\n" );
print_proxy( "{\n" );
indent++;
write_remoting_arguments(proxy, indent, cur, PASS_IN, PHASE_BUFFERSIZE);
print_proxy( "NdrProxyGetBuffer(This, &_StubMsg);\n" );
write_remoting_arguments(proxy, indent, cur, PASS_IN, PHASE_MARSHAL);
print_proxy( "NdrProxySendReceive(This, &_StubMsg);\n" );
fprintf(proxy, "\n");
print_proxy( "_StubMsg.BufferStart = _RpcMessage.Buffer;\n" );
print_proxy( "_StubMsg.BufferEnd = _StubMsg.BufferStart + _RpcMessage.BufferLength;\n\n" );
print_proxy("if ((_RpcMessage.DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
indent++;
print_proxy("NdrConvert( &_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
indent--;
fprintf(proxy, "\n");
write_remoting_arguments(proxy, indent, cur, PASS_OUT, PHASE_UNMARSHAL);
if (has_ret)
{
if (decl_indirect(def->type))
print_proxy("MIDL_memset(&%s, 0, sizeof(%s));\n", "_RetVal", "_RetVal");
else if (is_ptr(def->type) || is_array(def->type))
print_proxy("%s = 0;\n", "_RetVal");
write_remoting_arguments(proxy, indent, cur, PASS_RETURN, PHASE_UNMARSHAL);
}
indent--;
print_proxy( "}\n");
print_proxy( "RpcFinally\n" );
print_proxy( "{\n" );
indent++;
print_proxy( "NdrProxyFreeBuffer(This, &_StubMsg);\n" );
indent--;
print_proxy( "}\n");
print_proxy( "RpcEndFinally\n" );
indent--;
print_proxy( "}\n" );
print_proxy( "RpcExcept(_StubMsg.dwStubPhase != PROXY_SENDRECEIVE)\n" );
print_proxy( "{\n" );
if (has_ret) {
indent++;
proxy_free_variables( cur->args );
print_proxy( "_RetVal = NdrProxyErrorHandler(RpcExceptionCode());\n" );
indent--;
}
print_proxy( "}\n" );
print_proxy( "RpcEndExcept\n" );
if (has_ret) {
print_proxy( "return _RetVal;\n" );
}
indent--;
print_proxy( "}\n");
print_proxy( "\n");
}
static void gen_stub(type_t *iface, const func_t *cur, const char *cas,
unsigned int proc_offset)
{
var_t *def = cur->def;
const var_t *arg;
int has_ret = !is_void(def->type);
indent = 0;
print_proxy( "void __RPC_STUB %s_", iface->name);
write_name(proxy, def);
print_proxy( "_Stub(\n");
indent++;
print_proxy( "IRpcStubBuffer* This,\n");
print_proxy( "IRpcChannelBuffer *_pRpcChannelBuffer,\n");
print_proxy( "PRPC_MESSAGE _pRpcMessage,\n");
print_proxy( "DWORD* _pdwStubPhase)\n");
indent--;
print_proxy( "{\n");
indent++;
print_proxy("%s * _This = (%s*)((CStdStubBuffer*)This)->pvServerObject;\n", iface->name, iface->name);
print_proxy("MIDL_STUB_MESSAGE _StubMsg;\n");
declare_stub_args( proxy, indent, cur );
fprintf(proxy, "\n");
/* FIXME: trace */
print_proxy("NdrStubInitialize(_pRpcMessage, &_StubMsg, &Object_StubDesc, _pRpcChannelBuffer);\n");
fprintf(proxy, "\n");
write_parameters_init(proxy, indent, cur);
print_proxy("RpcTryFinally\n");
print_proxy("{\n");
indent++;
print_proxy("if ((_pRpcMessage->DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
indent++;
print_proxy("NdrConvert( &_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
indent--;
fprintf(proxy, "\n");
write_remoting_arguments(proxy, indent, cur, PASS_IN, PHASE_UNMARSHAL);
fprintf(proxy, "\n");
assign_stub_out_args( proxy, indent, cur );
print_proxy("*_pdwStubPhase = STUB_CALL_SERVER;\n");
fprintf(proxy, "\n");
print_proxy("");
if (has_ret) fprintf(proxy, "_RetVal = ");
if (cas) fprintf(proxy, "%s_%s_Stub", iface->name, cas);
else
{
fprintf(proxy, "_This->lpVtbl->");
write_name(proxy, def);
}
fprintf(proxy, "(_This");
if (cur->args)
{
LIST_FOR_EACH_ENTRY( arg, cur->args, const var_t, entry )
{
fprintf(proxy, ", ");
if (arg->type->declarray)
fprintf(proxy, "*");
write_name(proxy, arg);
}
}
fprintf(proxy, ");\n");
fprintf(proxy, "\n");
print_proxy("*_pdwStubPhase = STUB_MARSHAL;\n");
fprintf(proxy, "\n");
write_remoting_arguments(proxy, indent, cur, PASS_OUT, PHASE_BUFFERSIZE);
print_proxy("NdrStubGetBuffer(This, _pRpcChannelBuffer, &_StubMsg);\n");
write_remoting_arguments(proxy, indent, cur, PASS_OUT, PHASE_MARSHAL);
fprintf(proxy, "\n");
if (has_ret)
print_phase_basetype(proxy, indent, PHASE_MARSHAL, PASS_RETURN, def, "_RetVal");
indent--;
print_proxy("}\n");
print_proxy("RpcFinally\n");
print_proxy("{\n");
write_remoting_arguments(proxy, indent+1, cur, PASS_OUT, PHASE_FREE);
print_proxy("}\n");
print_proxy("RpcEndFinally\n");
print_proxy("_pRpcMessage->BufferLength = _StubMsg.Buffer - (unsigned char *)_pRpcMessage->Buffer;\n");
indent--;
print_proxy("}\n");
print_proxy("\n");
}
static int write_proxy_methods(type_t *iface)
{
const func_t *cur;
int i = 0;
if (iface->ref) i = write_proxy_methods(iface->ref);
if (iface->funcs) LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry ) {
var_t *def = cur->def;
if (!is_callas(def->attrs)) {
if (i) fprintf(proxy, ",\n");
print_proxy( "%s_", iface->name);
write_name(proxy, def);
fprintf(proxy, "_Proxy");
i++;
}
}
return i;
}
static int write_stub_methods(type_t *iface)
{
const func_t *cur;
int i = 0;
if (iface->ref) i = write_stub_methods(iface->ref);
else return i; /* skip IUnknown */
if (iface->funcs) LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry ) {
var_t *def = cur->def;
if (!is_local(def->attrs)) {
if (i) fprintf(proxy,",\n");
print_proxy( "%s_", iface->name);
write_name(proxy, def);
fprintf(proxy, "_Stub");
i++;
}
}
return i;
}
static void write_proxy(type_t *iface, unsigned int *proc_offset)
{
int midx = -1, stubs;
const func_t *cur;
if (!iface->funcs) return;
/* FIXME: check for [oleautomation], shouldn't generate proxies/stubs if specified */
fprintf(proxy, "/*****************************************************************************\n");
fprintf(proxy, " * %s interface\n", iface->name);
fprintf(proxy, " */\n");
LIST_FOR_EACH_ENTRY( cur, iface->funcs, const func_t, entry )
{
const var_t *def = cur->def;
if (!is_local(def->attrs)) {
const var_t *cas = is_callas(def->attrs);
const char *cname = cas ? cas->name : NULL;
int idx = cur->idx;
if (cname) {
const func_t *m;
LIST_FOR_EACH_ENTRY( m, iface->funcs, const func_t, entry )
if (!strcmp(m->def->name, cname))
{
idx = m->idx;
break;
}
}
gen_proxy(iface, cur, idx, *proc_offset);
gen_stub(iface, cur, cname, *proc_offset);
*proc_offset += get_size_procformatstring_func( cur );
if (midx == -1) midx = idx;
else if (midx != idx) error("method index mismatch in write_proxy\n");
midx++;
}
}
/* proxy vtable */
print_proxy( "static const CINTERFACE_PROXY_VTABLE(%d) _%sProxyVtbl =\n", midx, iface->name);
print_proxy( "{\n");
indent++;
print_proxy( "{\n", iface->name);
indent++;
print_proxy( "&IID_%s,\n", iface->name);
indent--;
print_proxy( "},\n");
print_proxy( "{\n");
indent++;
write_proxy_methods(iface);
fprintf(proxy, "\n");
indent--;
print_proxy( "}\n");
indent--;
print_proxy( "};\n");
fprintf(proxy, "\n\n");
/* stub vtable */
print_proxy( "static const PRPC_STUB_FUNCTION %s_table[] =\n", iface->name);
print_proxy( "{\n");
indent++;
stubs = write_stub_methods(iface);
fprintf(proxy, "\n");
indent--;
fprintf(proxy, "};\n");
print_proxy( "\n");
print_proxy( "static const CInterfaceStubVtbl _%sStubVtbl =\n", iface->name);
print_proxy( "{\n");
indent++;
print_proxy( "{\n");
indent++;
print_proxy( "&IID_%s,\n", iface->name);
print_proxy( "0,\n");
print_proxy( "%d,\n", stubs+3);
print_proxy( "&%s_table[-3],\n", iface->name);
indent--;
print_proxy( "},\n", iface->name);
print_proxy( "{\n");
indent++;
print_proxy( "CStdStubBuffer_METHODS\n");
indent--;
print_proxy( "}\n");
indent--;
print_proxy( "};\n");
print_proxy( "\n");
}
static int does_any_iface(const ifref_list_t *ifaces, type_pred_t pred)
{
ifref_t *ir;
if (ifaces)
LIST_FOR_EACH_ENTRY(ir, ifaces, ifref_t, entry)
if (pred(ir->iface))
return TRUE;
return FALSE;
}
int need_proxy(const type_t *iface)
{
return is_object(iface->attrs) && !is_local(iface->attrs);
}
int need_stub(const type_t *iface)
{
return !is_object(iface->attrs) && !is_local(iface->attrs);
}
int need_proxy_file(const ifref_list_t *ifaces)
{
return does_any_iface(ifaces, need_proxy);
}
int need_stub_files(const ifref_list_t *ifaces)
{
return does_any_iface(ifaces, need_stub);
}
void write_proxies(ifref_list_t *ifaces)
{
ifref_t *cur;
int expr_eval_routines;
char *file_id = proxy_token;
int c;
unsigned int proc_offset = 0;
if (!do_proxies) return;
if (do_everything && !need_proxy_file(ifaces)) return;
init_proxy(ifaces);
if(!proxy) return;
if (ifaces)
LIST_FOR_EACH_ENTRY( cur, ifaces, ifref_t, entry )
if (need_proxy(cur->iface))
write_proxy(cur->iface, &proc_offset);
expr_eval_routines = write_expr_eval_routines(proxy, proxy_token);
if (expr_eval_routines)
write_expr_eval_routine_list(proxy, proxy_token);
write_user_quad_list(proxy);
write_stubdesc(expr_eval_routines);
print_proxy( "#if !defined(__RPC_WIN32__)\n");
print_proxy( "#error Currently only Wine and WIN32 are supported.\n");
print_proxy( "#endif\n");
print_proxy( "\n");
write_procformatstring(proxy, ifaces, need_proxy);
write_typeformatstring(proxy, ifaces, need_proxy);
fprintf(proxy, "static const CInterfaceProxyVtbl* const _%s_ProxyVtblList[] =\n", file_id);
fprintf(proxy, "{\n");
if (ifaces)
LIST_FOR_EACH_ENTRY( cur, ifaces, ifref_t, entry )
if(cur->iface->ref && cur->iface->funcs && need_proxy(cur->iface))
fprintf(proxy, " (const CInterfaceProxyVtbl*)&_%sProxyVtbl,\n", cur->iface->name);
fprintf(proxy, " 0\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
fprintf(proxy, "static const CInterfaceStubVtbl* const _%s_StubVtblList[] =\n", file_id);
fprintf(proxy, "{\n");
if (ifaces)
LIST_FOR_EACH_ENTRY( cur, ifaces, ifref_t, entry )
if(cur->iface->ref && cur->iface->funcs && need_proxy(cur->iface))
fprintf(proxy, " (const CInterfaceStubVtbl*)&_%sStubVtbl,\n", cur->iface->name);
fprintf(proxy, " 0\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
fprintf(proxy, "static PCInterfaceName const _%s_InterfaceNamesList[] =\n", file_id);
fprintf(proxy, "{\n");
if (ifaces)
LIST_FOR_EACH_ENTRY( cur, ifaces, ifref_t, entry )
if(cur->iface->ref && cur->iface->funcs && need_proxy(cur->iface))
fprintf(proxy, " \"%s\",\n", cur->iface->name);
fprintf(proxy, " 0\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
fprintf(proxy, "#define _%s_CHECK_IID(n) IID_GENERIC_CHECK_IID(_%s, pIID, n)\n", file_id, file_id);
fprintf(proxy, "\n");
fprintf(proxy, "int __stdcall _%s_IID_Lookup(const IID* pIID, int* pIndex)\n", file_id);
fprintf(proxy, "{\n");
c = 0;
if (ifaces)
LIST_FOR_EACH_ENTRY( cur, ifaces, ifref_t, entry )
if(cur->iface->ref && cur->iface->funcs && need_proxy(cur->iface))
{
fprintf(proxy, " if (!_%s_CHECK_IID(%d))\n", file_id, c);
fprintf(proxy, " {\n");
fprintf(proxy, " *pIndex = %d;\n", c);
fprintf(proxy, " return 1;\n");
fprintf(proxy, " }\n");
c++;
}
fprintf(proxy, " return 0;\n");
fprintf(proxy, "}\n");
fprintf(proxy, "\n");
fprintf(proxy, "const ExtendedProxyFileInfo %s_ProxyFileInfo =\n", file_id);
fprintf(proxy, "{\n");
fprintf(proxy, " (const PCInterfaceProxyVtblList*)&_%s_ProxyVtblList,\n", file_id);
fprintf(proxy, " (const PCInterfaceStubVtblList*)&_%s_StubVtblList,\n", file_id);
fprintf(proxy, " _%s_InterfaceNamesList,\n", file_id);
fprintf(proxy, " 0,\n");
fprintf(proxy, " &_%s_IID_Lookup,\n", file_id);
fprintf(proxy, " %d,\n", c);
fprintf(proxy, " 1,\n");
fprintf(proxy, " 0,\n");
fprintf(proxy, " 0,\n");
fprintf(proxy, " 0,\n");
fprintf(proxy, " 0\n");
fprintf(proxy, "};\n");
fclose(proxy);
}
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