tools/widl/proxy.c

   1 /*
   2  * IDL Compiler
   3  *
   4  * Copyright 2002 Ove Kaaven
   5  * Copyright 2004 Mike McCormack
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #ifdef HAVE_UNISTD_H
  28 # include <unistd.h>
  29 #endif
  30 #include <string.h>
  31 #include <ctype.h>
  32
  33 #include "widl.h"
  34 #include "utils.h"
  35 #include "parser.h"
  36 #include "header.h"
  37 #include "typegen.h"
  38 #include "expr.h"
  39
  40 #define END_OF_LIST(list)       \
  41   do {                          \
  42     if (list) {                 \
  43       while (NEXT_LINK(list))   \
  44         list = NEXT_LINK(list); \
  45     }                           \
  46   } while(0)
  47
  48 static FILE* proxy;
  49 static int indent = 0;
  50
  51 /* FIXME: support generation of stubless proxies */
  52
  53 static void print_proxy( const char *format, ... ) __attribute__((format (printf, 1, 2)));
  54 static void print_proxy( const char *format, ... )
  55 {
  56   va_list va;
  57   va_start( va, format );
  58   print( proxy, indent, format, va );
  59   va_end( va );
  60 }
  61
  62 static void write_stubdescproto(void)
  63 {
  64   print_proxy( "static const MIDL_STUB_DESC Object_StubDesc;\n");
  65   print_proxy( "\n");
  66 }
  67
  68 static void write_stubdesc(int expr_eval_routines)
  69 {
  70   print_proxy( "static const MIDL_STUB_DESC Object_StubDesc =\n{\n");
  71   indent++;
  72   print_proxy( "0,\n");
  73   print_proxy( "NdrOleAllocate,\n");
  74   print_proxy( "NdrOleFree,\n");
  75   print_proxy( "{0}, 0, 0, %s, 0,\n", expr_eval_routines ? "ExprEvalRoutines" : "0");
  76   print_proxy( "__MIDL_TypeFormatString.Format,\n");
  77   print_proxy( "1, /* -error bounds_check flag */\n");
  78   print_proxy( "0x10001, /* Ndr library version */\n");
  79   print_proxy( "0,\n");
  80   print_proxy( "0x50100a4, /* MIDL Version 5.1.164 */\n");
  81   print_proxy( "0,\n");
  82   print_proxy("%s,\n", list_empty(&user_type_list) ? "0" : "UserMarshalRoutines");
  83   print_proxy( "0,  /* notify & notify_flag routine table */\n");
  84   print_proxy( "1,  /* Flags */\n");
  85   print_proxy( "0,  /* Reserved3 */\n");
  86   print_proxy( "0,  /* Reserved4 */\n");
  87   print_proxy( "0   /* Reserved5 */\n");
  88   indent--;
  89   print_proxy( "};\n");
  90   print_proxy( "\n");
  91 }
  92
  93 static void init_proxy(const statement_list_t *stmts)
  94 {
  95   if (proxy) return;
  96   if(!(proxy = fopen(proxy_name, "w")))
  97     error("Could not open %s for output\n", proxy_name);
  98   print_proxy( "/*** Autogenerated by WIDL %s from %s - Do not edit ***/\n", PACKAGE_VERSION, input_name);
  99   print_proxy( "\n");
 100   print_proxy( "#ifndef __REDQ_RPCPROXY_H_VERSION__\n");
 101   print_proxy( "#define __REQUIRED_RPCPROXY_H_VERSION__ 440\n");
 102   print_proxy( "#endif /* __REDQ_RPCPROXY_H_VERSION__ */\n");
 103   print_proxy( "\n");
 104   print_proxy( "#define __midl_proxy\n");
 105   print_proxy( "#include \"objbase.h\"\n");
 106   print_proxy( "#include \"rpcproxy.h\"\n");
 107   print_proxy( "#ifndef __RPCPROXY_H_VERSION__\n");
 108   print_proxy( "#error This code needs a newer version of rpcproxy.h\n");
 109   print_proxy( "#endif /* __RPCPROXY_H_VERSION__ */\n");
 110   print_proxy( "\n");
 111   print_proxy( "#include \"%s\"\n", header_name);
 112   print_proxy( "\n");
 113   print_proxy( "#ifndef DECLSPEC_HIDDEN\n");
 114   print_proxy( "#define DECLSPEC_HIDDEN\n");
 115   print_proxy( "#endif\n");
 116   print_proxy( "\n");
 117 }
 118
 119 static void clear_output_vars( const var_list_t *args )
 120 {
 121   const var_t *arg;
 122
 123   if (!args) return;
 124   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 125   {
 126     if (is_attr(arg->attrs, ATTR_OUT) && !is_attr(arg->attrs, ATTR_IN)) {
 127       print_proxy( "if(%s)\n", arg->name );
 128       indent++;
 129       print_proxy( "MIDL_memset( %s, 0, sizeof( *%s ));\n", arg->name, arg->name );
 130       indent--;
 131     }
 132   }
 133 }
 134
 135 int is_var_ptr(const var_t *v)
 136 {
 137   return is_ptr(v->type);
 138 }
 139
 140 int cant_be_null(const var_t *v)
 141 {
 142     switch (typegen_detect_type(v->type, v->attrs, TDT_IGNORE_STRINGS))
 143     {
 144     case TGT_ARRAY:
 145     case TGT_POINTER:
 146         return (get_pointer_fc(v->type, v->attrs, TRUE) == RPC_FC_RP);
 147     case TGT_CTXT_HANDLE_POINTER:
 148         return TRUE;
 149     default:
 150         return 0;
 151     }
 152
 153 }
 154
 155 static int need_delegation(const type_t *iface)
 156 {
 157     return type_iface_get_inherit(iface) &&
 158            type_iface_get_inherit(type_iface_get_inherit(iface)) &&
 159            type_iface_get_inherit(iface)->ignore;
 160 }
 161
 162 static int get_delegation_indirect(const type_t *iface, const type_t ** delegate_to)
 163 {
 164   const type_t * cur_iface;
 165   for (cur_iface = iface; cur_iface != NULL; cur_iface = type_iface_get_inherit(cur_iface))
 166     if (need_delegation(cur_iface))
 167     {
 168       if(delegate_to)
 169         *delegate_to = type_iface_get_inherit(cur_iface);
 170       return 1;
 171     }
 172   return 0;
 173 }
 174
 175 static int need_delegation_indirect(const type_t *iface)
 176 {
 177   return get_delegation_indirect(iface, NULL);
 178 }
 179
 180 static void proxy_check_pointers( const var_list_t *args )
 181 {
 182   const var_t *arg;
 183
 184   if (!args) return;
 185   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 186   {
 187     if (is_var_ptr(arg) && cant_be_null(arg)) {
 188         print_proxy( "if(!%s)\n", arg->name );
 189         indent++;
 190         print_proxy( "RpcRaiseException(RPC_X_NULL_REF_POINTER);\n");
 191         indent--;
 192     }
 193   }
 194 }
 195
 196 static void free_variable( const var_t *arg, const char *local_var_prefix )
 197 {
 198   unsigned int type_offset = arg->type->typestring_offset;
 199   expr_t *iid;
 200   type_t *type = arg->type;
 201   expr_t *size = get_size_is_expr(type, arg->name);
 202
 203   if (size)
 204   {
 205     print_proxy( "__frame->_StubMsg.MaxCount = " );
 206     write_expr(proxy, size, 0, 1, NULL, NULL, local_var_prefix);
 207     fprintf(proxy, ";\n\n");
 208     print_proxy( "NdrClearOutParameters( &__frame->_StubMsg, ");
 209     fprintf(proxy, "&__MIDL_TypeFormatString.Format[%u], ", type_offset );
 210     fprintf(proxy, "(void*)%s );\n", arg->name );
 211     return;
 212   }
 213
 214   switch (typegen_detect_type(type, arg->attrs, TDT_IGNORE_STRINGS))
 215   {
 216   case TGT_ENUM:
 217   case TGT_BASIC:
 218     break;
 219
 220   case TGT_STRUCT:
 221     if (get_struct_fc(type) != RPC_FC_STRUCT)
 222       print_proxy("/* FIXME: %s code for %s struct type 0x%x missing */\n", __FUNCTION__, arg->name, get_struct_fc(type) );
 223     break;
 224
 225   case TGT_IFACE_POINTER:
 226     iid = get_attrp( arg->attrs, ATTR_IIDIS );
 227     if( iid )
 228     {
 229       print_proxy( "__frame->_StubMsg.MaxCount = (ULONG_PTR) " );
 230       write_expr(proxy, iid, 1, 1, NULL, NULL, local_var_prefix);
 231       print_proxy( ";\n\n" );
 232     }
 233     /* fall through */
 234   case TGT_POINTER:
 235     if (get_pointer_fc(type, arg->attrs, TRUE) == RPC_FC_FP)
 236     {
 237       print_proxy( "NdrClearOutParameters( &__frame->_StubMsg, ");
 238       fprintf(proxy, "&__MIDL_TypeFormatString.Format[%u], ", type_offset );
 239       fprintf(proxy, "(void*)%s );\n", arg->name );
 240     }
 241     else
 242       print_proxy("/* FIXME: %s code for %s type %d missing */\n", __FUNCTION__, arg->name, type_get_type(type) );
 243     break;
 244
 245   default:
 246     print_proxy("/* FIXME: %s code for %s type %d missing */\n", __FUNCTION__, arg->name, type_get_type(type) );
 247   }
 248 }
 249
 250 static void proxy_free_variables( var_list_t *args, const char *local_var_prefix )
 251 {
 252   const var_t *arg;
 253
 254   if (!args) return;
 255   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 256     if (is_attr(arg->attrs, ATTR_OUT))
 257     {
 258       free_variable( arg, local_var_prefix );
 259       fprintf(proxy, "\n");
 260     }
 261 }
 262
 263 static void gen_proxy(type_t *iface, const var_t *func, int idx,
 264                       unsigned int proc_offset)
 265 {
 266   int has_ret = !is_void(type_function_get_rettype(func->type));
 267   int has_full_pointer = is_full_pointer_function(func);
 268   const char *callconv = get_attrp(func->type->attrs, ATTR_CALLCONV);
 269   if (!callconv) callconv = "STDMETHODCALLTYPE";
 270
 271   indent = 0;
 272   print_proxy( "static void __finally_%s_%s_Proxy( struct __proxy_frame *__frame )\n",
 273                iface->name, get_name(func) );
 274   print_proxy( "{\n");
 275   indent++;
 276   if (has_full_pointer) write_full_pointer_free(proxy, indent, func);
 277   print_proxy( "NdrProxyFreeBuffer( __frame->This, &__frame->_StubMsg );\n" );
 278   indent--;
 279   print_proxy( "}\n");
 280   print_proxy( "\n");
 281
 282   write_type_decl_left(proxy, type_function_get_rettype(func->type));
 283   print_proxy( " %s %s_%s_Proxy(\n", callconv, iface->name, get_name(func));
 284   write_args(proxy, type_get_function_args(func->type), iface->name, 1, TRUE);
 285   print_proxy( ")\n");
 286   print_proxy( "{\n");
 287   indent ++;
 288   print_proxy( "struct __proxy_frame __f, * const __frame = &__f;\n" );
 289   /* local variables */
 290   if (has_ret) {
 291     print_proxy( "%s", "" );
 292     write_type_decl_left(proxy, type_function_get_rettype(func->type));
 293     print_proxy( " _RetVal;\n");
 294   }
 295   print_proxy( "RPC_MESSAGE _RpcMessage;\n" );
 296   if (has_ret) {
 297     if (decl_indirect(type_function_get_rettype(func->type)))
 298       print_proxy("void *_p_%s = &%s;\n",
 299                  "_RetVal", "_RetVal");
 300   }
 301   print_proxy( "\n");
 302
 303   print_proxy( "RpcExceptionInit( __proxy_filter, __finally_%s_%s_Proxy );\n", iface->name, get_name(func) );
 304   print_proxy( "__frame->This = This;\n" );
 305
 306   if (has_full_pointer)
 307     write_full_pointer_init(proxy, indent, func, FALSE);
 308
 309   /* FIXME: trace */
 310   clear_output_vars( type_get_function_args(func->type) );
 311
 312   print_proxy( "RpcTryExcept\n" );
 313   print_proxy( "{\n" );
 314   indent++;
 315   print_proxy( "NdrProxyInitialize(This, &_RpcMessage, &__frame->_StubMsg, &Object_StubDesc, %d);\n", idx);
 316   proxy_check_pointers( type_get_function_args(func->type) );
 317
 318   print_proxy( "RpcTryFinally\n" );
 319   print_proxy( "{\n" );
 320   indent++;
 321
 322   write_remoting_arguments(proxy, indent, func, "", PASS_IN, PHASE_BUFFERSIZE);
 323
 324   print_proxy( "NdrProxyGetBuffer(This, &__frame->_StubMsg);\n" );
 325
 326   write_remoting_arguments(proxy, indent, func, "", PASS_IN, PHASE_MARSHAL);
 327
 328   print_proxy( "NdrProxySendReceive(This, &__frame->_StubMsg);\n" );
 329   fprintf(proxy, "\n");
 330   print_proxy( "__frame->_StubMsg.BufferStart = _RpcMessage.Buffer;\n" );
 331   print_proxy( "__frame->_StubMsg.BufferEnd   = __frame->_StubMsg.BufferStart + _RpcMessage.BufferLength;\n\n" );
 332
 333   print_proxy("if ((_RpcMessage.DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 334   indent++;
 335   print_proxy("NdrConvert( &__frame->_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
 336   indent--;
 337   fprintf(proxy, "\n");
 338
 339   write_remoting_arguments(proxy, indent, func, "", PASS_OUT, PHASE_UNMARSHAL);
 340
 341   if (has_ret)
 342   {
 343       if (decl_indirect(type_function_get_rettype(func->type)))
 344           print_proxy("MIDL_memset(&%s, 0, sizeof(%s));\n", "_RetVal", "_RetVal");
 345       else if (is_ptr(type_function_get_rettype(func->type)) ||
 346                is_array(type_function_get_rettype(func->type)))
 347           print_proxy("%s = 0;\n", "_RetVal");
 348       write_remoting_arguments(proxy, indent, func, "", PASS_RETURN, PHASE_UNMARSHAL);
 349   }
 350
 351   indent--;
 352   print_proxy( "}\n");
 353   print_proxy( "RpcFinally\n" );
 354   print_proxy( "{\n" );
 355   indent++;
 356   print_proxy( "__finally_%s_%s_Proxy( __frame );\n", iface->name, get_name(func) );
 357   indent--;
 358   print_proxy( "}\n");
 359   print_proxy( "RpcEndFinally\n" );
 360   indent--;
 361   print_proxy( "}\n" );
 362   print_proxy( "RpcExcept(__frame->_StubMsg.dwStubPhase != PROXY_SENDRECEIVE)\n" );
 363   print_proxy( "{\n" );
 364   if (has_ret) {
 365     indent++;
 366     proxy_free_variables( type_get_function_args(func->type), "" );
 367     print_proxy( "_RetVal = NdrProxyErrorHandler(RpcExceptionCode());\n" );
 368     indent--;
 369   }
 370   print_proxy( "}\n" );
 371   print_proxy( "RpcEndExcept\n" );
 372
 373   if (has_ret) {
 374     print_proxy( "return _RetVal;\n" );
 375   }
 376   indent--;
 377   print_proxy( "}\n");
 378   print_proxy( "\n");
 379 }
 380
 381 static void gen_stub(type_t *iface, const var_t *func, const char *cas,
 382                      unsigned int proc_offset)
 383 {
 384   const var_t *arg;
 385   int has_ret = !is_void(type_function_get_rettype(func->type));
 386   int has_full_pointer = is_full_pointer_function(func);
 387
 388   indent = 0;
 389   print_proxy( "struct __frame_%s_%s_Stub\n{\n", iface->name, get_name(func));
 390   indent++;
 391   print_proxy( "__DECL_EXCEPTION_FRAME\n" );
 392   print_proxy( "MIDL_STUB_MESSAGE _StubMsg;\n");
 393   print_proxy( "%s * _This;\n", iface->name );
 394   declare_stub_args( proxy, indent, func );
 395   indent--;
 396   print_proxy( "};\n\n" );
 397
 398   print_proxy( "static void __finally_%s_%s_Stub(", iface->name, get_name(func) );
 399   print_proxy( " struct __frame_%s_%s_Stub *__frame )\n{\n", iface->name, get_name(func) );
 400   indent++;
 401   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_FREE);
 402   if (has_full_pointer)
 403     write_full_pointer_free(proxy, indent, func);
 404   indent--;
 405   print_proxy( "}\n\n" );
 406
 407   print_proxy( "void __RPC_STUB %s_%s_Stub(\n", iface->name, get_name(func));
 408   indent++;
 409   print_proxy( "IRpcStubBuffer* This,\n");
 410   print_proxy( "IRpcChannelBuffer *_pRpcChannelBuffer,\n");
 411   print_proxy( "PRPC_MESSAGE _pRpcMessage,\n");
 412   print_proxy( "DWORD* _pdwStubPhase)\n");
 413   indent--;
 414   print_proxy( "{\n");
 415   indent++;
 416   print_proxy( "struct __frame_%s_%s_Stub __f, * const __frame = &__f;\n\n",
 417                iface->name, get_name(func) );
 418
 419   print_proxy("__frame->_This = (%s*)((CStdStubBuffer*)This)->pvServerObject;\n\n", iface->name);
 420
 421   /* FIXME: trace */
 422
 423   print_proxy("NdrStubInitialize(_pRpcMessage, &__frame->_StubMsg, &Object_StubDesc, _pRpcChannelBuffer);\n");
 424   fprintf(proxy, "\n");
 425   print_proxy( "RpcExceptionInit( 0, __finally_%s_%s_Stub );\n", iface->name, get_name(func) );
 426
 427   write_parameters_init(proxy, indent, func, "__frame->");
 428
 429   print_proxy("RpcTryFinally\n");
 430   print_proxy("{\n");
 431   indent++;
 432   if (has_full_pointer)
 433     write_full_pointer_init(proxy, indent, func, TRUE);
 434   print_proxy("if ((_pRpcMessage->DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 435   indent++;
 436   print_proxy("NdrConvert( &__frame->_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
 437   indent--;
 438   fprintf(proxy, "\n");
 439
 440   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_IN, PHASE_UNMARSHAL);
 441   fprintf(proxy, "\n");
 442
 443   assign_stub_out_args( proxy, indent, func, "__frame->" );
 444
 445   print_proxy("*_pdwStubPhase = STUB_CALL_SERVER;\n");
 446   fprintf(proxy, "\n");
 447   print_proxy( "%s", has_ret ? "__frame->_RetVal = " : "" );
 448   if (cas) fprintf(proxy, "%s_%s_Stub", iface->name, cas);
 449   else fprintf(proxy, "__frame->_This->lpVtbl->%s", get_name(func));
 450   fprintf(proxy, "(__frame->_This");
 451
 452   if (type_get_function_args(func->type))
 453   {
 454       LIST_FOR_EACH_ENTRY( arg, type_get_function_args(func->type), const var_t, entry )
 455           fprintf(proxy, ", %s__frame->%s", is_array(arg->type) && !type_array_is_decl_as_ptr(arg->type) ? "*" :"" , arg->name);
 456   }
 457   fprintf(proxy, ");\n");
 458   fprintf(proxy, "\n");
 459   print_proxy("*_pdwStubPhase = STUB_MARSHAL;\n");
 460   fprintf(proxy, "\n");
 461
 462   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_BUFFERSIZE);
 463
 464   if (!is_void(type_function_get_rettype(func->type)))
 465     write_remoting_arguments(proxy, indent, func, "__frame->", PASS_RETURN, PHASE_BUFFERSIZE);
 466
 467   print_proxy("NdrStubGetBuffer(This, _pRpcChannelBuffer, &__frame->_StubMsg);\n");
 468
 469   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_MARSHAL);
 470   fprintf(proxy, "\n");
 471
 472   /* marshall the return value */
 473   if (!is_void(type_function_get_rettype(func->type)))
 474     write_remoting_arguments(proxy, indent, func, "__frame->", PASS_RETURN, PHASE_MARSHAL);
 475
 476   indent--;
 477   print_proxy("}\n");
 478   print_proxy("RpcFinally\n");
 479   print_proxy("{\n");
 480   indent++;
 481   print_proxy( "__finally_%s_%s_Stub( __frame );\n", iface->name, get_name(func) );
 482   indent--;
 483   print_proxy("}\n");
 484   print_proxy("RpcEndFinally\n");
 485
 486   print_proxy("_pRpcMessage->BufferLength = __frame->_StubMsg.Buffer - (unsigned char *)_pRpcMessage->Buffer;\n");
 487   indent--;
 488
 489   print_proxy("}\n");
 490   print_proxy("\n");
 491 }
 492
 493 int count_methods(const type_t *iface)
 494 {
 495     const statement_t *stmt;
 496     int count = 0;
 497
 498     if (type_iface_get_inherit(iface))
 499         count = count_methods(type_iface_get_inherit(iface));
 500
 501     STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 502         const var_t *func = stmt->u.var;
 503         if (!is_callas(func->attrs)) count++;
 504     }
 505     return count;
 506 }
 507
 508 static const statement_t * get_callas_source(const type_t * iface, const var_t * def)
 509 {
 510   const statement_t * source;
 511   STATEMENTS_FOR_EACH_FUNC( source, type_iface_get_stmts(iface)) {
 512     const var_t * cas = is_callas(source->u.var->attrs );
 513     if (cas && !strcmp(def->name, cas->name))
 514       return source;
 515   }
 516   return NULL;
 517 }
 518
 519 static int write_proxy_methods(type_t *iface, int skip)
 520 {
 521   const statement_t *stmt;
 522   int i = 0;
 523
 524   if (type_iface_get_inherit(iface))
 525     i = write_proxy_methods(type_iface_get_inherit(iface),
 526                             need_delegation(iface));
 527   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 528     const var_t *func = stmt->u.var;
 529     if (!is_callas(func->attrs)) {
 530       if (i != func->type->details.function->idx )
 531         error("widl internal error: method index mismatch\n");
 532       if (i) fprintf(proxy, ",\n");
 533       if (skip || (is_local(func->attrs) && !get_callas_source(iface, func)))
 534            print_proxy( "0  /* %s_%s_Proxy */", iface->name, get_name(func));
 535       else print_proxy( "%s_%s_Proxy", iface->name, get_name(func));
 536       i++;
 537     }
 538   }
 539   return i;
 540 }
 541
 542 static int write_stub_methods(type_t *iface, int skip)
 543 {
 544   const statement_t *stmt;
 545   int i = 0;
 546
 547   if (type_iface_get_inherit(iface))
 548     i = write_stub_methods(type_iface_get_inherit(iface), need_delegation(iface));
 549   else
 550     return i; /* skip IUnknown */
 551
 552   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 553     const var_t *func = stmt->u.var;
 554     if (!is_callas(func->attrs)) {
 555       int missing = 0;
 556       const char * fname = get_name(func);
 557       if(is_local(func->attrs)) {
 558         const statement_t * callas_source = get_callas_source(iface, func);
 559         if(!callas_source)
 560           missing = 1;
 561         else
 562           fname = get_name(callas_source->u.var);
 563       }
 564       if (i) fprintf(proxy,",\n");
 565       if (skip || missing) print_proxy("STUB_FORWARDING_FUNCTION");
 566       else print_proxy( "%s_%s_Stub", iface->name, fname);
 567       i++;
 568     }
 569   }
 570   return i;
 571 }
 572
 573 static void write_proxy(type_t *iface, unsigned int *proc_offset)
 574 {
 575   int count;
 576   const statement_t *stmt;
 577   int first_func = 1;
 578
 579   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 580     var_t *func = stmt->u.var;
 581     if (first_func) {
 582       fprintf(proxy, "/*****************************************************************************\n");
 583       fprintf(proxy, " * %s interface\n", iface->name);
 584       fprintf(proxy, " */\n");
 585       first_func = 0;
 586     }
 587     if (!is_local(func->attrs)) {
 588       const var_t *cas = is_callas(func->attrs);
 589       const char *cname = cas ? cas->name : NULL;
 590       int idx = func->type->details.function->idx;
 591       if (cname) {
 592           const statement_t *stmt2;
 593           STATEMENTS_FOR_EACH_FUNC(stmt2, type_iface_get_stmts(iface)) {
 594               const var_t *m = stmt2->u.var;
 595               if (!strcmp(m->name, cname))
 596               {
 597                   idx = m->type->details.function->idx;
 598                   break;
 599               }
 600           }
 601       }
 602       func->procstring_offset = *proc_offset;
 603       gen_proxy(iface, func, idx, *proc_offset);
 604       gen_stub(iface, func, cname, *proc_offset);
 605       *proc_offset += get_size_procformatstring_func( func );
 606     }
 607   }
 608
 609   count = count_methods(iface);
 610
 611   write_procformatstring_offsets( proxy, iface );
 612
 613   /* proxy vtable */
 614   print_proxy( "static %sCINTERFACE_PROXY_VTABLE(%d) _%sProxyVtbl =\n",
 615                need_delegation_indirect(iface) ? "" : "const ", count, iface->name);
 616   print_proxy( "{\n");
 617   indent++;
 618   print_proxy( "{\n");
 619   indent++;
 620   print_proxy( "&IID_%s,\n", iface->name);
 621   indent--;
 622   print_proxy( "},\n");
 623   print_proxy( "{\n");
 624   indent++;
 625   write_proxy_methods(iface, FALSE);
 626   fprintf(proxy, "\n");
 627   indent--;
 628   print_proxy( "}\n");
 629   indent--;
 630   print_proxy( "};\n\n");
 631
 632   /* server info */
 633   print_proxy( "static const MIDL_SERVER_INFO %s_ServerInfo =\n", iface->name );
 634   print_proxy( "{\n" );
 635   indent++;
 636   print_proxy( "&Object_StubDesc,\n" );
 637   print_proxy( "0,\n" );
 638   print_proxy( "__MIDL_ProcFormatString.Format,\n" );
 639   print_proxy( "&%s_FormatStringOffsetTable[-3],\n", iface->name );
 640   print_proxy( "0,\n" );
 641   print_proxy( "0,\n" );
 642   print_proxy( "0,\n" );
 643   print_proxy( "0\n" );
 644   indent--;
 645   print_proxy( "};\n\n" );
 646
 647   /* stub vtable */
 648   print_proxy( "static const PRPC_STUB_FUNCTION %s_table[] =\n", iface->name);
 649   print_proxy( "{\n");
 650   indent++;
 651   write_stub_methods(iface, FALSE);
 652   fprintf(proxy, "\n");
 653   indent--;
 654   fprintf(proxy, "};\n");
 655   print_proxy( "\n");
 656   print_proxy( "static %sCInterfaceStubVtbl _%sStubVtbl =\n",
 657                need_delegation_indirect(iface) ? "" : "const ", iface->name);
 658   print_proxy( "{\n");
 659   indent++;
 660   print_proxy( "{\n");
 661   indent++;
 662   print_proxy( "&IID_%s,\n", iface->name);
 663   print_proxy( "&%s_ServerInfo,\n", iface->name );
 664   print_proxy( "%d,\n", count);
 665   print_proxy( "&%s_table[-3],\n", iface->name);
 666   indent--;
 667   print_proxy( "},\n");
 668   print_proxy( "{\n");
 669   indent++;
 670   print_proxy( "CStdStubBuffer_%s\n", need_delegation_indirect(iface) ? "DELEGATING_METHODS" : "METHODS");
 671   indent--;
 672   print_proxy( "}\n");
 673   indent--;
 674   print_proxy( "};\n");
 675   print_proxy( "\n");
 676 }
 677
 678 static int does_any_iface(const statement_list_t *stmts, type_pred_t pred)
 679 {
 680   const statement_t *stmt;
 681
 682   if (stmts)
 683     LIST_FOR_EACH_ENTRY(stmt, stmts, const statement_t, entry)
 684     {
 685       if (stmt->type == STMT_LIBRARY)
 686       {
 687           if (does_any_iface(stmt->u.lib->stmts, pred))
 688               return TRUE;
 689       }
 690       else if (stmt->type == STMT_TYPE && type_get_type(stmt->u.type) == TYPE_INTERFACE)
 691       {
 692         if (pred(stmt->u.type))
 693           return TRUE;
 694       }
 695     }
 696
 697   return FALSE;
 698 }
 699
 700 int need_proxy(const type_t *iface)
 701 {
 702     if (!is_object( iface )) return 0;
 703     if (is_local( iface->attrs )) return 0;
 704     if (is_attr( iface->attrs, ATTR_OLEAUTOMATION )) return 0;
 705     if (is_attr( iface->attrs, ATTR_DISPINTERFACE )) return 0;
 706     return 1;
 707 }
 708
 709 int need_stub(const type_t *iface)
 710 {
 711   return !is_object(iface) && !is_local(iface->attrs);
 712 }
 713
 714 int need_proxy_file(const statement_list_t *stmts)
 715 {
 716   return does_any_iface(stmts, need_proxy);
 717 }
 718
 719 int need_stub_files(const statement_list_t *stmts)
 720 {
 721   return does_any_iface(stmts, need_stub);
 722 }
 723
 724 static void write_proxy_stmts(const statement_list_t *stmts, unsigned int *proc_offset)
 725 {
 726   const statement_t *stmt;
 727   if (stmts) LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
 728   {
 729     if (stmt->type == STMT_LIBRARY)
 730       write_proxy_stmts(stmt->u.lib->stmts, proc_offset);
 731     else if (stmt->type == STMT_TYPE && type_get_type(stmt->u.type) == TYPE_INTERFACE)
 732     {
 733       if (need_proxy(stmt->u.type))
 734         write_proxy(stmt->u.type, proc_offset);
 735     }
 736   }
 737 }
 738
 739 static int cmp_iid( const void *ptr1, const void *ptr2 )
 740 {
 741     const type_t * const *iface1 = ptr1;
 742     const type_t * const *iface2 = ptr2;
 743     const UUID *uuid1 = get_attrp( (*iface1)->attrs, ATTR_UUID );
 744     const UUID *uuid2 = get_attrp( (*iface2)->attrs, ATTR_UUID );
 745     return memcmp( uuid1, uuid2, sizeof(UUID) );
 746 }
 747
 748 static void build_iface_list( const statement_list_t *stmts, type_t **ifaces[], int *count )
 749 {
 750     const statement_t *stmt;
 751
 752     if (!stmts) return;
 753     LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
 754     {
 755         if (stmt->type == STMT_LIBRARY)
 756             build_iface_list(stmt->u.lib->stmts, ifaces, count);
 757         else if (stmt->type == STMT_TYPE && type_get_type(stmt->u.type) == TYPE_INTERFACE)
 758         {
 759             type_t *iface = stmt->u.type;
 760             if (type_iface_get_inherit(iface) && need_proxy(iface))
 761             {
 762                 *ifaces = xrealloc( *ifaces, (*count + 1) * sizeof(**ifaces) );
 763                 (*ifaces)[(*count)++] = iface;
 764             }
 765         }
 766     }
 767 }
 768
 769 static type_t **sort_interfaces( const statement_list_t *stmts, int *count )
 770 {
 771     type_t **ifaces = NULL;
 772
 773     *count = 0;
 774     build_iface_list( stmts, &ifaces, count );
 775     qsort( ifaces, *count, sizeof(*ifaces), cmp_iid );
 776     return ifaces;
 777 }
 778
 779 static void write_proxy_routines(const statement_list_t *stmts)
 780 {
 781   int expr_eval_routines;
 782   unsigned int proc_offset = 0;
 783   char *file_id = proxy_token;
 784   int i, count, have_baseiid;
 785   type_t **interfaces;
 786   const type_t * delegate_to;
 787
 788   write_exceptions( proxy );
 789   print_proxy( "\n");
 790   print_proxy( "struct __proxy_frame\n");
 791   print_proxy( "{\n");
 792   print_proxy( "    __DECL_EXCEPTION_FRAME\n");
 793   print_proxy( "    MIDL_STUB_MESSAGE _StubMsg;\n");
 794   print_proxy( "    void             *This;\n");
 795   print_proxy( "};\n");
 796   print_proxy( "\n");
 797   print_proxy("static int __proxy_filter( struct __proxy_frame *__frame )\n");
 798   print_proxy( "{\n");
 799   print_proxy( "    return (__frame->_StubMsg.dwStubPhase != PROXY_SENDRECEIVE);\n");
 800   print_proxy( "}\n");
 801   print_proxy( "\n");
 802
 803   write_formatstringsdecl(proxy, indent, stmts, need_proxy);
 804   write_stubdescproto();
 805   write_proxy_stmts(stmts, &proc_offset);
 806
 807   expr_eval_routines = write_expr_eval_routines(proxy, proxy_token);
 808   if (expr_eval_routines)
 809       write_expr_eval_routine_list(proxy, proxy_token);
 810   write_user_quad_list(proxy);
 811   write_stubdesc(expr_eval_routines);
 812
 813   print_proxy( "#if !defined(__RPC_WIN%u__)\n", pointer_size == 8 ? 64 : 32);
 814   print_proxy( "#error Currently only Wine and WIN32 are supported.\n");
 815   print_proxy( "#endif\n");
 816   print_proxy( "\n");
 817   write_procformatstring(proxy, stmts, need_proxy);
 818   write_typeformatstring(proxy, stmts, need_proxy);
 819
 820   interfaces = sort_interfaces(stmts, &count);
 821   fprintf(proxy, "static const CInterfaceProxyVtbl* const _%s_ProxyVtblList[] =\n", file_id);
 822   fprintf(proxy, "{\n");
 823   for (i = 0; i < count; i++)
 824       fprintf(proxy, "    (const CInterfaceProxyVtbl*)&_%sProxyVtbl,\n", interfaces[i]->name);
 825   fprintf(proxy, "    0\n");
 826   fprintf(proxy, "};\n");
 827   fprintf(proxy, "\n");
 828
 829   fprintf(proxy, "static const CInterfaceStubVtbl* const _%s_StubVtblList[] =\n", file_id);
 830   fprintf(proxy, "{\n");
 831   for (i = 0; i < count; i++)
 832       fprintf(proxy, "    &_%sStubVtbl,\n", interfaces[i]->name);
 833   fprintf(proxy, "    0\n");
 834   fprintf(proxy, "};\n");
 835   fprintf(proxy, "\n");
 836
 837   fprintf(proxy, "static PCInterfaceName const _%s_InterfaceNamesList[] =\n", file_id);
 838   fprintf(proxy, "{\n");
 839   for (i = 0; i < count; i++)
 840       fprintf(proxy, "    \"%s\",\n", interfaces[i]->name);
 841   fprintf(proxy, "    0\n");
 842   fprintf(proxy, "};\n");
 843   fprintf(proxy, "\n");
 844
 845   if ((have_baseiid = does_any_iface(stmts, need_delegation_indirect)))
 846   {
 847       fprintf(proxy, "static const IID * _%s_BaseIIDList[] =\n", file_id);
 848       fprintf(proxy, "{\n");
 849       for (i = 0; i < count; i++)
 850       {
 851           if (get_delegation_indirect(interfaces[i], &delegate_to))
 852               fprintf( proxy, "    &IID_%s,  /* %s */\n", delegate_to->name, interfaces[i]->name );
 853           else
 854               fprintf( proxy, "    0,\n" );
 855       }
 856       fprintf(proxy, "    0\n");
 857       fprintf(proxy, "};\n");
 858       fprintf(proxy, "\n");
 859   }
 860
 861   fprintf(proxy, "static int __stdcall _%s_IID_Lookup(const IID* pIID, int* pIndex)\n", file_id);
 862   fprintf(proxy, "{\n");
 863   fprintf(proxy, "    int low = 0, high = %d;\n", count - 1);
 864   fprintf(proxy, "\n");
 865   fprintf(proxy, "    while (low <= high)\n");
 866   fprintf(proxy, "    {\n");
 867   fprintf(proxy, "        int pos = (low + high) / 2;\n");
 868   fprintf(proxy, "        int res = IID_GENERIC_CHECK_IID(_%s, pIID, pos);\n", file_id);
 869   fprintf(proxy, "        if (!res) { *pIndex = pos; return 1; }\n");
 870   fprintf(proxy, "        if (res > 0) low = pos + 1;\n");
 871   fprintf(proxy, "        else high = pos - 1;\n");
 872   fprintf(proxy, "    }\n");
 873   fprintf(proxy, "    return 0;\n");
 874   fprintf(proxy, "}\n");
 875   fprintf(proxy, "\n");
 876
 877   fprintf(proxy, "const ExtendedProxyFileInfo %s_ProxyFileInfo DECLSPEC_HIDDEN =\n", file_id);
 878   fprintf(proxy, "{\n");
 879   fprintf(proxy, "    (const PCInterfaceProxyVtblList*)_%s_ProxyVtblList,\n", file_id);
 880   fprintf(proxy, "    (const PCInterfaceStubVtblList*)_%s_StubVtblList,\n", file_id);
 881   fprintf(proxy, "    _%s_InterfaceNamesList,\n", file_id);
 882   if (have_baseiid) fprintf(proxy, "    _%s_BaseIIDList,\n", file_id);
 883   else fprintf(proxy, "    0,\n");
 884   fprintf(proxy, "    _%s_IID_Lookup,\n", file_id);
 885   fprintf(proxy, "    %d,\n", count);
 886   fprintf(proxy, "    1,\n");
 887   fprintf(proxy, "    0,\n");
 888   fprintf(proxy, "    0,\n");
 889   fprintf(proxy, "    0,\n");
 890   fprintf(proxy, "    0\n");
 891   fprintf(proxy, "};\n");
 892 }
 893
 894 void write_proxies(const statement_list_t *stmts)
 895 {
 896   if (!do_proxies) return;
 897   if (do_everything && !need_proxy_file(stmts)) return;
 898
 899   init_proxy(stmts);
 900   if(!proxy) return;
 901
 902   if (do_win32 && do_win64)
 903   {
 904       fprintf(proxy, "\n#ifndef _WIN64\n\n");
 905       pointer_size = 4;
 906       write_proxy_routines( stmts );
 907       fprintf(proxy, "\n#else /* _WIN64 */\n\n");
 908       pointer_size = 8;
 909       write_proxy_routines( stmts );
 910       fprintf(proxy, "\n#endif /* _WIN64 */\n");
 911   }
 912   else if (do_win32)
 913   {
 914       pointer_size = 4;
 915       write_proxy_routines( stmts );
 916   }
 917   else if (do_win64)
 918   {
 919       pointer_size = 8;
 920       write_proxy_routines( stmts );
 921   }
 922
 923   fclose(proxy);
 924 }