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Sweden-Number/tools/widl/proxy.c

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/*
* IDL Compiler
*
* Copyright 2002 Ove Kaaven
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.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"
/* FIXME: support generation of stubless proxies */
static void write_stubdesc(void)
{
fprintf(proxy, "const MIDL_STUB_DESC Object_StubDesc = {\n");
fprintf(proxy, " 0,\n");
fprintf(proxy, " NdrOleAllocate,\n");
fprintf(proxy, " NdrOleFree,\n");
fprintf(proxy, " {0}, 0, 0, 0, 0,\n");
fprintf(proxy, " 0 /* __MIDL_TypeFormatString.Format */\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
}
static void init_proxy(void)
{
if (proxy) return;
proxy = fopen(proxy_name, "w");
fprintf(proxy, "/*** Autogenerated by WIDL %s - Do not edit ***/\n", WIDL_FULLVERSION);
fprintf(proxy, "#include \"rpcproxy.h\"\n");
fprintf(proxy, "#include \"%s\"\n", header_name);
fprintf(proxy, "\n");
write_stubdesc();
}
static void gen_proxy(type_t *iface, func_t *cur, int idx)
{
var_t *def = cur->def;
int has_ret = !is_void(def->type, def);
write_type(proxy, def->type, def, def->tname);
fprintf(proxy, " CALLBACK %s_", iface->name);
write_name(proxy, def);
fprintf(proxy, "_Proxy(\n");
write_args(proxy, cur->args, iface->name, 1);
fprintf(proxy, ")\n");
fprintf(proxy, "{\n");
/* local variables */
if (has_ret) {
fprintf(proxy, " ");
write_type(proxy, def->type, def, def->tname);
fprintf(proxy, " _Ret;\n");
}
fprintf(proxy, " RPC_MESSAGE _Msg;\n");
fprintf(proxy, " MIDL_STUB_MESSAGE _StubMsg;\n");
fprintf(proxy, "\n");
/* FIXME: trace */
/* FIXME: clear output vars? */
fprintf(proxy, " NdrProxyInitialize(This, &_Msg, &_StubMsg, &Object_StubDesc, %d);\n", idx);
/* FIXME: size buffer */
fprintf(proxy, " NdrProxyGetBuffer(This, &_StubMsg);\n");
/* FIXME: marshall */
fprintf(proxy, " NdrProxySendReceive(This, &_StubMsg);\n");
/* FIXME: unmarshall */
fprintf(proxy, " NdrProxyFreeBuffer(This, &_StubMsg);\n");
if (has_ret) {
fprintf(proxy, " return _Ret;\n");
}
fprintf(proxy, "}\n");
fprintf(proxy, "\n");
}
static void gen_stub(type_t *iface, func_t *cur, char *cas)
{
var_t *def = cur->def;
var_t *arg;
int has_ret = !is_void(def->type, def);
fprintf(proxy, "void __RPC_STUB %s_", iface->name);
write_name(proxy, def);
fprintf(proxy, "_Stub(\n");
fprintf(proxy, " IRpcStubBuffer* This,\n");
fprintf(proxy, " IRpcChannelBuffer* pRpcChannelBuffer,\n");
fprintf(proxy, " PRPC_MESSAGE pRpcMessage,\n");
fprintf(proxy, " DWORD* pdwStubPhase)\n");
fprintf(proxy, "{\n");
/* local variables */
if (has_ret) {
fprintf(proxy, " ");
write_type(proxy, def->type, def, def->tname);
fprintf(proxy, " _Ret;\n");
}
fprintf(proxy, " %s* _This = (%s*)((CStdStubBuffer*)This)->pvServerObject;\n", iface->name, iface->name);
fprintf(proxy, " MIDL_STUB_MESSAGE _StubMsg;\n");
arg = cur->args;
while (arg) {
fprintf(proxy, " ");
write_type(proxy, arg->type, arg, arg->tname);
fprintf(proxy, " ");
write_name(proxy, arg);
fprintf(proxy, ";\n");
arg = NEXT_LINK(arg);
}
fprintf(proxy, "\n");
/* FIXME: trace */
/* FIXME: clear output vars? */
fprintf(proxy, " NdrStubInitialize(pRpcMessage, &_StubMsg, &Object_StubDesc, pRpcChannelBuffer);\n");
/* FIXME: unmarshall */
fprintf(proxy, " *pdwStubPhase = STUB_CALL_SERVER;\n");
fprintf(proxy, " ");
if (has_ret) fprintf(proxy, "_Ret = ");
fprintf(proxy, "%s_", iface->name);
if (cas) fprintf(proxy, "%s_Stub", cas);
else write_name(proxy, def);
fprintf(proxy, "(_This");
arg = cur->args;
if (arg) {
while (NEXT_LINK(arg)) arg = NEXT_LINK(arg);
while (arg) {
fprintf(proxy, ", ");
write_name(proxy, arg);
arg = PREV_LINK(arg);
}
}
fprintf(proxy, ");\n");
fprintf(proxy, " *pdwStubPhase = STUB_MARSHAL;\n");
/* FIXME: size buffer */
fprintf(proxy, " NdrStubGetBuffer(This, pRpcChannelBuffer, &_StubMsg);\n");
/* FIXME: marshall */
fprintf(proxy, "}\n");
fprintf(proxy, "\n");
}
static int write_proxy_methods(type_t *iface)
{
func_t *cur = iface->funcs;
int i = 0;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
if (iface->ref) i = write_proxy_methods(iface->ref);
while (cur) {
var_t *def = cur->def;
if (!is_callas(def->attrs)) {
if (i) fprintf(proxy, ",\n ");
fprintf(proxy, "%s_", iface->name);
write_name(proxy, def);
fprintf(proxy, "_Proxy");
i++;
}
cur = PREV_LINK(cur);
}
return i;
}
static int write_stub_methods(type_t *iface)
{
func_t *cur = iface->funcs;
int i = 0;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
if (iface->ref) i = write_stub_methods(iface->ref);
else return i; /* skip IUnknown */
while (cur) {
var_t *def = cur->def;
if (!is_local(def->attrs)) {
if (i) fprintf(proxy, ",\n");
fprintf(proxy, " %s_", iface->name);
write_name(proxy, def);
fprintf(proxy, "_Stub");
i++;
}
cur = PREV_LINK(cur);
}
return i;
}
typedef struct _if_list if_list;
struct _if_list {
type_t *iface;
DECL_LINK(if_list)
};
if_list *if_first;
void write_proxy(type_t *iface)
{
int midx = -1, stubs;
func_t *cur = iface->funcs;
if_list *if_cur;
if (!cur) {
yywarning("%s has no methods", iface->name);
return;
}
if (header_only) return;
while (NEXT_LINK(cur)) cur = NEXT_LINK(cur);
/* FIXME: check for [oleautomation], shouldn't generate proxies/stubs if specified */
init_proxy();
if_cur = xmalloc(sizeof(if_list));
if_cur->iface = iface;
INIT_LINK(if_cur);
LINK(if_cur, if_first);
if_first = if_cur;
fprintf(proxy, "/*****************************************************************************\n");
fprintf(proxy, " * %s interface\n", iface->name);
fprintf(proxy, " */\n");
while (cur) {
var_t *def = cur->def;
if (!is_local(def->attrs)) {
var_t *cas = is_callas(def->attrs);
char *cname = cas ? cas->name : NULL;
int idx = cur->idx;
if (cname) {
func_t *m = iface->funcs;
while (m && strcmp(get_name(m->def), cname))
m = NEXT_LINK(m);
idx = m->idx;
}
gen_proxy(iface, cur, idx);
gen_stub(iface, cur, cname);
if (midx == -1) midx = idx;
else if (midx != idx) yyerror("method index mismatch in write_proxy");
midx++;
}
cur = PREV_LINK(cur);
}
/* proxy vtable */
fprintf(proxy, "const CINTERFACE_PROXY_VTABLE(%d) %sProxyVtbl = {\n", midx, iface->name);
fprintf(proxy, " {&IID_%s},\n", iface->name);
fprintf(proxy, " {");
write_proxy_methods(iface);
fprintf(proxy, "}\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
/* stub vtable */
fprintf(proxy, "static const PRPC_STUB_FUNCTION %s_table[] = {\n", iface->name);
stubs = write_stub_methods(iface);
fprintf(proxy, "\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
fprintf(proxy, "const CInterfaceStubVtbl %sStubVtbl = {\n", iface->name);
fprintf(proxy, " {&IID_%s,\n", iface->name);
fprintf(proxy, " 0,\n");
fprintf(proxy, " %d,\n", stubs+3);
fprintf(proxy, " &%s_table[-3]},\n", iface->name);
fprintf(proxy, " {CStdStubBuffer_METHODS}\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
}
void finish_proxy(void)
{
if_list *lcur = if_first;
if_list *cur;
char *file_id = proxy_token;
int c;
if (!lcur) return;
while (NEXT_LINK(lcur)) lcur = NEXT_LINK(lcur);
fprintf(proxy, "const CInterfaceProxyVtbl* _%s_ProxyVtblList[] = {\n", file_id);
cur = lcur;
while (cur) {
fprintf(proxy, " (CInterfaceProxyVtbl*)&%sProxyVtbl,\n", cur->iface->name);
cur = PREV_LINK(cur);
}
fprintf(proxy, " 0\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
fprintf(proxy, "const CInterfaceStubVtbl* _%s_StubVtblList[] = {\n", file_id);
cur = lcur;
while (cur) {
fprintf(proxy, " (CInterfaceStubVtbl*)&%sStubVtbl,\n", cur->iface->name);
cur = PREV_LINK(cur);
}
fprintf(proxy, " 0\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
fprintf(proxy, "const PCInterfaceName _%s_InterfaceNamesList[] = {\n", file_id);
cur = lcur;
while (cur) {
fprintf(proxy, " \"%s\",\n", cur->iface->name);
cur = PREV_LINK(cur);
}
fprintf(proxy, " 0\n");
fprintf(proxy, "};\n");
fprintf(proxy, "\n");
fprintf(proxy, "#define _%s_CHECK_IID(n) IID_GENERIC_CHECK_IID(_XXX, pIID, n)\n", file_id);
fprintf(proxy, "\n");
fprintf(proxy, "int __stdcall _%s_IID_Lookup(const IID* pIID, int* pIndex)\n", file_id);
fprintf(proxy, "{\n");
cur = lcur;
c = 0;
while (cur) {
fprintf(proxy, " if (!_%s_CHECK_IID(%d)) {\n", file_id, c);
fprintf(proxy, " *pIndex = %d\n", c);
fprintf(proxy, " return 1;\n");
fprintf(proxy, " }\n");
cur = PREV_LINK(cur);
c++;
}
fprintf(proxy, " return 0;\n");
fprintf(proxy, "}\n");
fprintf(proxy, "\n");
fprintf(proxy, "const ExtendedProxyFileInfo %s_ProxyFileInfo = {\n", file_id);
fprintf(proxy, " (PCInterfaceProxyVtblList*)&_%s_ProxyVtblList,\n", file_id);
fprintf(proxy, " (PCInterfaceStubVtblList*)&_%s_StubVtblList,\n", file_id);
fprintf(proxy, " (const PCInterfaceName*)&_%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, "};\n");
fclose(proxy);
}
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