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
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <ctype.h>
  28
  29 #include "widl.h"
  30 #include "utils.h"
  31 #include "parser.h"
  32 #include "header.h"
  33 #include "typegen.h"
  34 #include "expr.h"
  35
  36 static FILE* proxy;
  37 static int indent = 0;
  38
  39 static void print_proxy( const char *format, ... ) __attribute__((format (printf, 1, 2)));
  40 static void print_proxy( const char *format, ... )
  41 {
  42   va_list va;
  43   va_start( va, format );
  44   print( proxy, indent, format, va );
  45   va_end( va );
  46 }
  47
  48 static void write_stubdescproto(void)
  49 {
  50   print_proxy( "static const MIDL_STUB_DESC Object_StubDesc;\n");
  51   print_proxy( "\n");
  52 }
  53
  54 static void write_stubdesc(int expr_eval_routines)
  55 {
  56   print_proxy( "static const MIDL_STUB_DESC Object_StubDesc =\n{\n");
  57   indent++;
  58   print_proxy( "0,\n");
  59   print_proxy( "NdrOleAllocate,\n");
  60   print_proxy( "NdrOleFree,\n");
  61   print_proxy( "{0}, 0, 0, %s, 0,\n", expr_eval_routines ? "ExprEvalRoutines" : "0");
  62   print_proxy( "__MIDL_TypeFormatString.Format,\n");
  63   print_proxy( "1, /* -error bounds_check flag */\n");
  64   print_proxy( "0x%x, /* Ndr library version */\n", interpreted_mode ? 0x50002 : 0x10001);
  65   print_proxy( "0,\n");
  66   print_proxy( "0x50200ca, /* MIDL Version 5.2.202 */\n");
  67   print_proxy( "0,\n");
  68   print_proxy("%s,\n", list_empty(&user_type_list) ? "0" : "UserMarshalRoutines");
  69   print_proxy( "0,  /* notify & notify_flag routine table */\n");
  70   print_proxy( "1,  /* Flags */\n");
  71   print_proxy( "0,  /* Reserved3 */\n");
  72   print_proxy( "0,  /* Reserved4 */\n");
  73   print_proxy( "0   /* Reserved5 */\n");
  74   indent--;
  75   print_proxy( "};\n");
  76   print_proxy( "\n");
  77 }
  78
  79 static void init_proxy(const statement_list_t *stmts)
  80 {
  81   if (proxy) return;
  82   if(!(proxy = fopen(proxy_name, "w")))
  83     error("Could not open %s for output\n", proxy_name);
  84   print_proxy( "/*** Autogenerated by WIDL %s from %s - Do not edit ***/\n", PACKAGE_VERSION, input_name);
  85   print_proxy( "\n");
  86   print_proxy( "#define __midl_proxy\n");
  87   print_proxy( "#include \"objbase.h\"\n");
  88   print_proxy( "\n");
  89 }
  90
  91 static void clear_output_vars( const var_list_t *args )
  92 {
  93   const var_t *arg;
  94
  95   if (!args) return;
  96   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
  97   {
  98       if (is_attr(arg->attrs, ATTR_IN)) continue;
  99       if (!is_attr(arg->attrs, ATTR_OUT)) continue;
 100       if (is_ptr(arg->declspec.type))
 101       {
 102           if (type_get_type(type_pointer_get_ref_type(arg->declspec.type)) == TYPE_BASIC) continue;
 103           if (type_get_type(type_pointer_get_ref_type(arg->declspec.type)) == TYPE_ENUM) continue;
 104       }
 105       print_proxy( "if (%s) MIDL_memset( %s, 0, ", arg->name, arg->name );
 106       if (is_array(arg->declspec.type) && type_array_has_conformance(arg->declspec.type))
 107       {
 108           write_expr( proxy, type_array_get_conformance(arg->declspec.type), 1, 1, NULL, NULL, "" );
 109           fprintf( proxy, " * " );
 110       }
 111       fprintf( proxy, "sizeof( *%s ));\n", arg->name );
 112   }
 113 }
 114
 115 static int need_delegation(const type_t *iface)
 116 {
 117     const type_t *parent = type_iface_get_inherit( iface );
 118     return parent && type_iface_get_inherit(parent) && (parent->ignore || is_local( parent->attrs ));
 119 }
 120
 121 static int get_delegation_indirect(const type_t *iface, const type_t ** delegate_to)
 122 {
 123   const type_t * cur_iface;
 124   for (cur_iface = iface; cur_iface != NULL; cur_iface = type_iface_get_inherit(cur_iface))
 125     if (need_delegation(cur_iface))
 126     {
 127       if(delegate_to)
 128         *delegate_to = type_iface_get_inherit(cur_iface);
 129       return 1;
 130     }
 131   return 0;
 132 }
 133
 134 static int need_delegation_indirect(const type_t *iface)
 135 {
 136   return get_delegation_indirect(iface, NULL);
 137 }
 138
 139 static void free_variable( const var_t *arg, const char *local_var_prefix )
 140 {
 141   unsigned int type_offset = arg->typestring_offset;
 142   type_t *type = arg->declspec.type;
 143
 144   write_parameter_conf_or_var_exprs(proxy, indent, local_var_prefix, PHASE_FREE, arg, FALSE);
 145
 146   switch (typegen_detect_type(type, arg->attrs, TDT_IGNORE_STRINGS))
 147   {
 148   case TGT_ENUM:
 149   case TGT_BASIC:
 150     break;
 151
 152   case TGT_STRUCT:
 153     if (get_struct_fc(type) != FC_STRUCT)
 154       print_proxy("/* FIXME: %s code for %s struct type 0x%x missing */\n", __FUNCTION__, arg->name, get_struct_fc(type) );
 155     break;
 156
 157   case TGT_IFACE_POINTER:
 158   case TGT_POINTER:
 159   case TGT_ARRAY:
 160     print_proxy( "NdrClearOutParameters( &__frame->_StubMsg, ");
 161     fprintf(proxy, "&__MIDL_TypeFormatString.Format[%u], ", type_offset );
 162     fprintf(proxy, "(void *)%s );\n", arg->name );
 163     break;
 164
 165   default:
 166     print_proxy("/* FIXME: %s code for %s type %d missing */\n", __FUNCTION__, arg->name, type_get_type(type) );
 167   }
 168 }
 169
 170 static void proxy_free_variables( var_list_t *args, const char *local_var_prefix )
 171 {
 172   const var_t *arg;
 173
 174   if (!args) return;
 175   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 176     if (is_attr(arg->attrs, ATTR_OUT))
 177     {
 178       free_variable( arg, local_var_prefix );
 179       fprintf(proxy, "\n");
 180     }
 181 }
 182
 183 static void gen_proxy(type_t *iface, const var_t *func, int idx,
 184                       unsigned int proc_offset)
 185 {
 186   var_t *retval = type_function_get_retval(func->declspec.type);
 187   int has_ret = !is_void(retval->declspec.type);
 188   int has_full_pointer = is_full_pointer_function(func);
 189   const char *callconv = get_attrp(func->declspec.type->attrs, ATTR_CALLCONV);
 190   const var_list_t *args = type_function_get_args(func->declspec.type);
 191   if (!callconv) callconv = "STDMETHODCALLTYPE";
 192
 193   indent = 0;
 194   if (is_interpreted_func( iface, func ))
 195   {
 196       if (!is_callas( func->attrs )) return;
 197       write_type_decl_left(proxy, &retval->declspec);
 198       print_proxy( " %s %s_%s_Proxy(\n", callconv, iface->name, get_name(func));
 199       write_args(proxy, args, iface->name, 1, TRUE, NAME_DEFAULT);
 200       print_proxy( ")\n");
 201       write_client_call_routine( proxy, iface, func, "Object", proc_offset );
 202       return;
 203   }
 204   print_proxy( "static void __finally_%s_%s_Proxy( struct __proxy_frame *__frame )\n",
 205                iface->name, get_name(func) );
 206   print_proxy( "{\n");
 207   indent++;
 208   if (has_full_pointer) write_full_pointer_free(proxy, indent, func);
 209   print_proxy( "NdrProxyFreeBuffer( __frame->This, &__frame->_StubMsg );\n" );
 210   indent--;
 211   print_proxy( "}\n");
 212   print_proxy( "\n");
 213
 214   write_type_decl_left(proxy, &retval->declspec);
 215   print_proxy( " %s %s_%s_Proxy(\n", callconv, iface->name, get_name(func));
 216   write_args(proxy, args, iface->name, 1, TRUE, NAME_DEFAULT);
 217   print_proxy( ")\n");
 218   print_proxy( "{\n");
 219   indent ++;
 220   print_proxy( "struct __proxy_frame __f, * const __frame = &__f;\n" );
 221   /* local variables */
 222   if (has_ret) {
 223     print_proxy( "%s", "" );
 224     write_type_decl(proxy, &retval->declspec, retval->name);
 225     fprintf( proxy, ";\n" );
 226   }
 227   print_proxy( "RPC_MESSAGE _RpcMessage;\n" );
 228   if (has_ret) {
 229     if (decl_indirect(retval->declspec.type))
 230         print_proxy("void *_p_%s = &%s;\n", retval->name, retval->name);
 231   }
 232   print_proxy( "\n");
 233
 234   print_proxy( "RpcExceptionInit( __proxy_filter, __finally_%s_%s_Proxy );\n", iface->name, get_name(func) );
 235   print_proxy( "__frame->This = This;\n" );
 236
 237   if (has_full_pointer)
 238     write_full_pointer_init(proxy, indent, func, FALSE);
 239
 240   /* FIXME: trace */
 241   clear_output_vars( type_function_get_args(func->declspec.type) );
 242
 243   print_proxy( "RpcTryExcept\n" );
 244   print_proxy( "{\n" );
 245   indent++;
 246   print_proxy( "NdrProxyInitialize(This, &_RpcMessage, &__frame->_StubMsg, &Object_StubDesc, %d);\n", idx);
 247   write_pointer_checks( proxy, indent, func );
 248
 249   print_proxy( "RpcTryFinally\n" );
 250   print_proxy( "{\n" );
 251   indent++;
 252
 253   write_remoting_arguments(proxy, indent, func, "", PASS_IN, PHASE_BUFFERSIZE);
 254
 255   print_proxy( "NdrProxyGetBuffer(This, &__frame->_StubMsg);\n" );
 256
 257   write_remoting_arguments(proxy, indent, func, "", PASS_IN, PHASE_MARSHAL);
 258
 259   print_proxy( "NdrProxySendReceive(This, &__frame->_StubMsg);\n" );
 260   fprintf(proxy, "\n");
 261   print_proxy( "__frame->_StubMsg.BufferStart = _RpcMessage.Buffer;\n" );
 262   print_proxy( "__frame->_StubMsg.BufferEnd   = __frame->_StubMsg.BufferStart + _RpcMessage.BufferLength;\n\n" );
 263
 264   print_proxy("if ((_RpcMessage.DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 265   indent++;
 266   print_proxy("NdrConvert( &__frame->_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
 267   indent--;
 268   fprintf(proxy, "\n");
 269
 270   write_remoting_arguments(proxy, indent, func, "", PASS_OUT, PHASE_UNMARSHAL);
 271
 272   if (has_ret)
 273   {
 274       if (decl_indirect(retval->declspec.type))
 275           print_proxy("MIDL_memset(&%s, 0, sizeof(%s));\n", retval->name, retval->name);
 276       else if (is_ptr(retval->declspec.type) || is_array(retval->declspec.type))
 277           print_proxy("%s = 0;\n", retval->name);
 278       write_remoting_arguments(proxy, indent, func, "", PASS_RETURN, PHASE_UNMARSHAL);
 279   }
 280
 281   indent--;
 282   print_proxy( "}\n");
 283   print_proxy( "RpcFinally\n" );
 284   print_proxy( "{\n" );
 285   indent++;
 286   print_proxy( "__finally_%s_%s_Proxy( __frame );\n", iface->name, get_name(func) );
 287   indent--;
 288   print_proxy( "}\n");
 289   print_proxy( "RpcEndFinally\n" );
 290   indent--;
 291   print_proxy( "}\n" );
 292   print_proxy( "RpcExcept(__frame->_StubMsg.dwStubPhase != PROXY_SENDRECEIVE)\n" );
 293   print_proxy( "{\n" );
 294   if (has_ret) {
 295     indent++;
 296     proxy_free_variables( type_function_get_args(func->declspec.type), "" );
 297     print_proxy( "/* coverity[uninit_use_in_call:SUPPRESS] */\n" );
 298     print_proxy( "_RetVal = NdrProxyErrorHandler(RpcExceptionCode());\n" );
 299     indent--;
 300   }
 301   print_proxy( "}\n" );
 302   print_proxy( "RpcEndExcept\n" );
 303
 304   if (has_ret) {
 305     print_proxy( "return _RetVal;\n" );
 306   }
 307   indent--;
 308   print_proxy( "}\n");
 309   print_proxy( "\n");
 310 }
 311
 312 static void gen_stub(type_t *iface, const var_t *func, const char *cas,
 313                      unsigned int proc_offset)
 314 {
 315   const var_t *arg;
 316   int has_ret = !is_void(type_function_get_rettype(func->declspec.type));
 317   int has_full_pointer = is_full_pointer_function(func);
 318
 319   if (is_interpreted_func( iface, func )) return;
 320
 321   indent = 0;
 322   print_proxy( "struct __frame_%s_%s_Stub\n{\n", iface->name, get_name(func));
 323   indent++;
 324   print_proxy( "__DECL_EXCEPTION_FRAME\n" );
 325   print_proxy( "MIDL_STUB_MESSAGE _StubMsg;\n");
 326   print_proxy( "%s * _This;\n", iface->name );
 327   declare_stub_args( proxy, indent, func );
 328   indent--;
 329   print_proxy( "};\n\n" );
 330
 331   print_proxy( "static void __finally_%s_%s_Stub(", iface->name, get_name(func) );
 332   print_proxy( " struct __frame_%s_%s_Stub *__frame )\n{\n", iface->name, get_name(func) );
 333   indent++;
 334   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_FREE);
 335   if (has_full_pointer)
 336     write_full_pointer_free(proxy, indent, func);
 337   indent--;
 338   print_proxy( "}\n\n" );
 339
 340   print_proxy( "void __RPC_STUB %s_%s_Stub(\n", iface->name, get_name(func));
 341   indent++;
 342   print_proxy( "IRpcStubBuffer* This,\n");
 343   print_proxy( "IRpcChannelBuffer *_pRpcChannelBuffer,\n");
 344   print_proxy( "PRPC_MESSAGE _pRpcMessage,\n");
 345   print_proxy( "DWORD* _pdwStubPhase)\n");
 346   indent--;
 347   print_proxy( "{\n");
 348   indent++;
 349   print_proxy( "struct __frame_%s_%s_Stub __f, * const __frame = &__f;\n\n",
 350                iface->name, get_name(func) );
 351
 352   print_proxy("__frame->_This = (%s*)((CStdStubBuffer*)This)->pvServerObject;\n\n", iface->name);
 353
 354   /* FIXME: trace */
 355
 356   print_proxy("NdrStubInitialize(_pRpcMessage, &__frame->_StubMsg, &Object_StubDesc, _pRpcChannelBuffer);\n");
 357   fprintf(proxy, "\n");
 358   print_proxy( "RpcExceptionInit( 0, __finally_%s_%s_Stub );\n", iface->name, get_name(func) );
 359
 360   write_parameters_init(proxy, indent, func, "__frame->");
 361
 362   print_proxy("RpcTryFinally\n");
 363   print_proxy("{\n");
 364   indent++;
 365   if (has_full_pointer)
 366     write_full_pointer_init(proxy, indent, func, TRUE);
 367   print_proxy("if ((_pRpcMessage->DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 368   indent++;
 369   print_proxy("NdrConvert( &__frame->_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
 370   indent--;
 371   fprintf(proxy, "\n");
 372
 373   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_IN, PHASE_UNMARSHAL);
 374   fprintf(proxy, "\n");
 375
 376   assign_stub_out_args( proxy, indent, func, "__frame->" );
 377
 378   print_proxy("*_pdwStubPhase = STUB_CALL_SERVER;\n");
 379   fprintf(proxy, "\n");
 380   print_proxy( "%s", has_ret ? "__frame->_RetVal = " : "" );
 381   if (cas) fprintf(proxy, "%s_%s_Stub", iface->name, cas);
 382   else fprintf(proxy, "__frame->_This->lpVtbl->%s", get_name(func));
 383   fprintf(proxy, "(__frame->_This");
 384
 385   if (type_function_get_args(func->declspec.type))
 386   {
 387       LIST_FOR_EACH_ENTRY( arg, type_function_get_args(func->declspec.type), const var_t, entry )
 388           fprintf(proxy, ", %s__frame->%s", is_array(arg->declspec.type) && !type_array_is_decl_as_ptr(arg->declspec.type) ? "*" :"" , arg->name);
 389   }
 390   fprintf(proxy, ");\n");
 391   fprintf(proxy, "\n");
 392   print_proxy("*_pdwStubPhase = STUB_MARSHAL;\n");
 393   fprintf(proxy, "\n");
 394
 395   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_BUFFERSIZE);
 396
 397   if (!is_void(type_function_get_rettype(func->declspec.type)))
 398     write_remoting_arguments(proxy, indent, func, "__frame->", PASS_RETURN, PHASE_BUFFERSIZE);
 399
 400   print_proxy("NdrStubGetBuffer(This, _pRpcChannelBuffer, &__frame->_StubMsg);\n");
 401
 402   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_MARSHAL);
 403   fprintf(proxy, "\n");
 404
 405   /* marshall the return value */
 406   if (!is_void(type_function_get_rettype(func->declspec.type)))
 407     write_remoting_arguments(proxy, indent, func, "__frame->", PASS_RETURN, PHASE_MARSHAL);
 408
 409   indent--;
 410   print_proxy("}\n");
 411   print_proxy("RpcFinally\n");
 412   print_proxy("{\n");
 413   indent++;
 414   print_proxy( "__finally_%s_%s_Stub( __frame );\n", iface->name, get_name(func) );
 415   indent--;
 416   print_proxy("}\n");
 417   print_proxy("RpcEndFinally\n");
 418
 419   print_proxy("_pRpcMessage->BufferLength = __frame->_StubMsg.Buffer - (unsigned char *)_pRpcMessage->Buffer;\n");
 420   indent--;
 421
 422   print_proxy("}\n");
 423   print_proxy("\n");
 424 }
 425
 426 static void gen_stub_thunk( type_t *iface, const var_t *func, unsigned int proc_offset )
 427 {
 428     int has_ret = !is_void( type_function_get_rettype( func->declspec.type ));
 429     const var_t *arg, *callas = is_callas( func->attrs );
 430     const var_list_t *args = type_function_get_args( func->declspec.type );
 431
 432     indent = 0;
 433     print_proxy( "void __RPC_API %s_%s_Thunk( PMIDL_STUB_MESSAGE pStubMsg )\n",
 434                  iface->name, get_name(func) );
 435     print_proxy( "{\n");
 436     indent++;
 437     write_func_param_struct( proxy, iface, func->declspec.type,
 438                              "*pParamStruct = (struct _PARAM_STRUCT *)pStubMsg->StackTop", has_ret );
 439     print_proxy( "%s%s_%s_Stub( pParamStruct->This",
 440                  has_ret ? "pParamStruct->_RetVal = " : "", iface->name, callas->name );
 441     indent++;
 442     if (args) LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 443     {
 444         fprintf( proxy, ",\n%*spParamStruct->%s", 4 * indent, "", arg->name );
 445     }
 446     fprintf( proxy, " );\n" );
 447     indent--;
 448     indent--;
 449     print_proxy( "}\n\n");
 450 }
 451
 452 int count_methods(const type_t *iface)
 453 {
 454     const statement_t *stmt;
 455     int count = 0;
 456
 457     if (type_iface_get_inherit(iface))
 458         count = count_methods(type_iface_get_inherit(iface));
 459
 460     STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 461         const var_t *func = stmt->u.var;
 462         if (!is_callas(func->attrs)) count++;
 463     }
 464     return count;
 465 }
 466
 467 const statement_t *get_callas_source(const type_t *iface, const var_t *def)
 468 {
 469   const statement_t * source;
 470   STATEMENTS_FOR_EACH_FUNC( source, type_iface_get_stmts(iface)) {
 471     const var_t * cas = is_callas(source->u.var->attrs );
 472     if (cas && !strcmp(def->name, cas->name))
 473       return source;
 474   }
 475   return NULL;
 476 }
 477
 478 static void write_proxy_procformatstring_offsets( const type_t *iface, int skip )
 479 {
 480     const statement_t *stmt;
 481
 482     if (type_iface_get_inherit(iface))
 483         write_proxy_procformatstring_offsets( type_iface_get_inherit(iface), need_delegation(iface));
 484     else
 485         return;
 486
 487     STATEMENTS_FOR_EACH_FUNC( stmt, type_iface_get_stmts(iface) )
 488     {
 489         const var_t *func = stmt->u.var;
 490         int missing = 0;
 491
 492         if (is_callas(func->attrs)) continue;
 493         if (is_local(func->attrs))
 494         {
 495             const statement_t * callas_source = get_callas_source(iface, func);
 496             if (!callas_source)
 497                 missing = 1;
 498             else
 499                 func = callas_source->u.var;
 500         }
 501         if (skip || missing)
 502             print_proxy( "(unsigned short)-1,  /* %s::%s */\n", iface->name, get_name(func));
 503         else
 504             print_proxy( "%u,  /* %s::%s */\n", func->procstring_offset, iface->name, get_name(func));
 505     }
 506 }
 507
 508 static int write_proxy_methods(type_t *iface, int skip)
 509 {
 510   const statement_t *stmt;
 511   int i = 0;
 512
 513   if (type_iface_get_inherit(iface))
 514     i = write_proxy_methods(type_iface_get_inherit(iface),
 515                             need_delegation(iface));
 516   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 517     const var_t *func = stmt->u.var;
 518     if (!is_callas(func->attrs)) {
 519       if (skip || (is_local(func->attrs) && !get_callas_source(iface, func)))
 520           print_proxy( "0,  /* %s::%s */\n", iface->name, get_name(func));
 521       else if (is_interpreted_func( iface, func ) &&
 522                !is_local( func->attrs ) &&
 523                type_iface_get_inherit(iface))
 524           print_proxy( "(void *)-1,  /* %s::%s */\n", iface->name, get_name(func));
 525       else
 526           print_proxy( "%s_%s_Proxy,\n", iface->name, get_name(func));
 527       i++;
 528     }
 529   }
 530   return i;
 531 }
 532
 533 static int write_stub_methods(type_t *iface, int skip)
 534 {
 535   const statement_t *stmt;
 536   int i = 0;
 537
 538   if (type_iface_get_inherit(iface))
 539     i = write_stub_methods(type_iface_get_inherit(iface), need_delegation(iface));
 540   else
 541     return i; /* skip IUnknown */
 542
 543   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 544     const var_t *func = stmt->u.var;
 545     if (!is_callas(func->attrs)) {
 546       int missing = 0;
 547       const char * fname = get_name(func);
 548       if(is_local(func->attrs)) {
 549         const statement_t * callas_source = get_callas_source(iface, func);
 550         if(!callas_source)
 551           missing = 1;
 552         else
 553           fname = get_name(callas_source->u.var);
 554       }
 555       if (i) fprintf(proxy,",\n");
 556       if (skip || missing) print_proxy("STUB_FORWARDING_FUNCTION");
 557       else if (is_interpreted_func( iface, func ))
 558           print_proxy( "(PRPC_STUB_FUNCTION)%s", interpreted_mode ? "NdrStubCall2" : "NdrStubCall" );
 559       else print_proxy( "%s_%s_Stub", iface->name, fname);
 560       i++;
 561     }
 562   }
 563   return i;
 564 }
 565
 566 static void write_thunk_methods( type_t *iface, int skip )
 567 {
 568     const statement_t *stmt;
 569
 570     if (type_iface_get_inherit( iface ))
 571         write_thunk_methods( type_iface_get_inherit(iface), need_delegation(iface) );
 572     else
 573         return; /* skip IUnknown */
 574
 575     STATEMENTS_FOR_EACH_FUNC( stmt, type_iface_get_stmts(iface) )
 576     {
 577         var_t *func = stmt->u.var;
 578         const statement_t * callas_source = NULL;
 579
 580         if (is_callas(func->attrs)) continue;
 581         if (is_local(func->attrs)) callas_source = get_callas_source(iface, func);
 582
 583         if (!skip && callas_source && is_interpreted_func( iface, func ))
 584             print_proxy( "%s_%s_Thunk,\n", iface->name, get_name(callas_source->u.var) );
 585         else
 586             print_proxy( "0, /* %s::%s */\n", iface->name, get_name(func) );
 587     }
 588 }
 589
 590 static void write_proxy(type_t *iface, unsigned int *proc_offset)
 591 {
 592   int count;
 593   const statement_t *stmt;
 594   int first_func = 1;
 595   int needs_stub_thunks = 0;
 596   int needs_inline_stubs = need_inline_stubs( iface ) || need_delegation( iface );
 597
 598   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 599     var_t *func = stmt->u.var;
 600     if (first_func) {
 601       fprintf(proxy, "/*****************************************************************************\n");
 602       fprintf(proxy, " * %s interface\n", iface->name);
 603       fprintf(proxy, " */\n");
 604       first_func = 0;
 605     }
 606     if (!is_local(func->attrs)) {
 607       const var_t *cas = is_callas(func->attrs);
 608       const char *cname = cas ? cas->name : NULL;
 609       int idx = func->func_idx;
 610       if (cname) {
 611           const statement_t *stmt2;
 612           STATEMENTS_FOR_EACH_FUNC(stmt2, type_iface_get_stmts(iface)) {
 613               const var_t *m = stmt2->u.var;
 614               if (!strcmp(m->name, cname))
 615               {
 616                   idx = m->func_idx;
 617                   break;
 618               }
 619           }
 620       }
 621       func->procstring_offset = *proc_offset;
 622       gen_proxy(iface, func, idx, *proc_offset);
 623       gen_stub(iface, func, cname, *proc_offset);
 624       if (cas && is_interpreted_func( iface, func ))
 625       {
 626           needs_stub_thunks = 1;
 627           gen_stub_thunk(iface, func, *proc_offset);
 628       }
 629       *proc_offset += get_size_procformatstring_func( iface, func );
 630     }
 631   }
 632
 633   count = count_methods(iface);
 634
 635   print_proxy( "static const unsigned short %s_FormatStringOffsetTable[] =\n", iface->name );
 636   print_proxy( "{\n" );
 637   indent++;
 638   write_proxy_procformatstring_offsets( iface, 0 );
 639   indent--;
 640   print_proxy( "};\n\n" );
 641
 642   /* proxy info */
 643   if (interpreted_mode)
 644   {
 645       print_proxy( "static const MIDL_STUBLESS_PROXY_INFO %s_ProxyInfo =\n", iface->name );
 646       print_proxy( "{\n" );
 647       indent++;
 648       print_proxy( "&Object_StubDesc,\n" );
 649       print_proxy( "__MIDL_ProcFormatString.Format,\n" );
 650       print_proxy( "&%s_FormatStringOffsetTable[-3],\n", iface->name );
 651       print_proxy( "0,\n" );
 652       print_proxy( "0,\n" );
 653       print_proxy( "0\n" );
 654       indent--;
 655       print_proxy( "};\n\n" );
 656   }
 657
 658   /* proxy vtable */
 659   print_proxy( "static %sCINTERFACE_PROXY_VTABLE(%d) _%sProxyVtbl =\n",
 660                (interpreted_mode || need_delegation_indirect(iface)) ? "" : "const ",
 661                count, iface->name);
 662   print_proxy( "{\n");
 663   indent++;
 664   print_proxy( "{\n");
 665   indent++;
 666   if (interpreted_mode) print_proxy( "&%s_ProxyInfo,\n", iface->name );
 667   print_proxy( "&IID_%s,\n", iface->name);
 668   indent--;
 669   print_proxy( "},\n");
 670   print_proxy( "{\n");
 671   indent++;
 672   write_proxy_methods(iface, FALSE);
 673   indent--;
 674   print_proxy( "}\n");
 675   indent--;
 676   print_proxy( "};\n\n");
 677
 678   /* stub thunk table */
 679   if (needs_stub_thunks)
 680   {
 681       print_proxy( "static const STUB_THUNK %s_StubThunkTable[] =\n", iface->name);
 682       print_proxy( "{\n");
 683       indent++;
 684       write_thunk_methods( iface, 0 );
 685       indent--;
 686       print_proxy( "};\n\n");
 687   }
 688
 689   /* server info */
 690   print_proxy( "static const MIDL_SERVER_INFO %s_ServerInfo =\n", iface->name );
 691   print_proxy( "{\n" );
 692   indent++;
 693   print_proxy( "&Object_StubDesc,\n" );
 694   print_proxy( "0,\n" );
 695   print_proxy( "__MIDL_ProcFormatString.Format,\n" );
 696   print_proxy( "&%s_FormatStringOffsetTable[-3],\n", iface->name );
 697   if (needs_stub_thunks)
 698       print_proxy( "&%s_StubThunkTable[-3],\n", iface->name );
 699   else
 700       print_proxy( "0,\n" );
 701   print_proxy( "0,\n" );
 702   print_proxy( "0,\n" );
 703   print_proxy( "0\n" );
 704   indent--;
 705   print_proxy( "};\n\n" );
 706
 707   /* stub vtable */
 708   if (needs_inline_stubs)
 709   {
 710       print_proxy( "static const PRPC_STUB_FUNCTION %s_table[] =\n", iface->name);
 711       print_proxy( "{\n");
 712       indent++;
 713       write_stub_methods(iface, FALSE);
 714       fprintf(proxy, "\n");
 715       indent--;
 716       fprintf(proxy, "};\n\n");
 717   }
 718   print_proxy( "static %sCInterfaceStubVtbl _%sStubVtbl =\n",
 719                need_delegation_indirect(iface) ? "" : "const ", iface->name);
 720   print_proxy( "{\n");
 721   indent++;
 722   print_proxy( "{\n");
 723   indent++;
 724   print_proxy( "&IID_%s,\n", iface->name);
 725   print_proxy( "&%s_ServerInfo,\n", iface->name );
 726   print_proxy( "%d,\n", count);
 727   if (needs_inline_stubs) print_proxy( "&%s_table[-3]\n", iface->name );
 728   else print_proxy( "0\n" );
 729   indent--;
 730   print_proxy( "},\n");
 731   print_proxy( "{\n");
 732   indent++;
 733   print_proxy( "%s_%s\n",
 734                type_iface_get_async_iface(iface) == iface ? "CStdAsyncStubBuffer" : "CStdStubBuffer",
 735                need_delegation_indirect(iface) ? "DELEGATING_METHODS" : "METHODS");
 736   indent--;
 737   print_proxy( "}\n");
 738   indent--;
 739   print_proxy( "};\n");
 740   print_proxy( "\n");
 741 }
 742
 743 static int does_any_iface(const statement_list_t *stmts, type_pred_t pred)
 744 {
 745   const statement_t *stmt;
 746
 747   if (stmts)
 748     LIST_FOR_EACH_ENTRY(stmt, stmts, const statement_t, entry)
 749     {
 750       if (stmt->type == STMT_TYPE && type_get_type(stmt->u.type) == TYPE_INTERFACE)
 751       {
 752         if (pred(stmt->u.type))
 753           return TRUE;
 754       }
 755     }
 756
 757   return FALSE;
 758 }
 759
 760 int need_proxy(const type_t *iface)
 761 {
 762     if (!is_object( iface )) return 0;
 763     if (is_local( iface->attrs )) return 0;
 764     if (is_attr( iface->attrs, ATTR_DISPINTERFACE )) return 0;
 765     return 1;
 766 }
 767
 768 int need_stub(const type_t *iface)
 769 {
 770   return !is_object(iface) && !is_local(iface->attrs);
 771 }
 772
 773 int need_proxy_file(const statement_list_t *stmts)
 774 {
 775     return does_any_iface(stmts, need_proxy);
 776 }
 777
 778 int need_proxy_delegation(const statement_list_t *stmts)
 779 {
 780     return does_any_iface(stmts, need_delegation);
 781 }
 782
 783 int need_inline_stubs(const type_t *iface)
 784 {
 785     const statement_t *stmt;
 786
 787     if (!interpreted_mode) return 1;
 788
 789     STATEMENTS_FOR_EACH_FUNC( stmt, type_iface_get_stmts(iface) )
 790     {
 791         const var_t *func = stmt->u.var;
 792         if (is_local( func->attrs )) continue;
 793         if (!is_interpreted_func( iface, func )) return 1;
 794     }
 795     return 0;
 796 }
 797
 798 static int need_proxy_and_inline_stubs(const type_t *iface)
 799 {
 800     const statement_t *stmt;
 801
 802     if (!need_proxy( iface )) return 0;
 803     if (!interpreted_mode) return 1;
 804
 805     STATEMENTS_FOR_EACH_FUNC( stmt, type_iface_get_stmts(iface) )
 806     {
 807         const var_t *func = stmt->u.var;
 808         if (is_local( func->attrs )) continue;
 809         if (!is_interpreted_func( iface, func )) return 1;
 810     }
 811     return 0;
 812 }
 813
 814 int need_stub_files(const statement_list_t *stmts)
 815 {
 816   return does_any_iface(stmts, need_stub);
 817 }
 818
 819 int need_inline_stubs_file(const statement_list_t *stmts)
 820 {
 821   return does_any_iface(stmts, need_inline_stubs);
 822 }
 823
 824 static void write_proxy_stmts(const statement_list_t *stmts, unsigned int *proc_offset)
 825 {
 826   const statement_t *stmt;
 827   if (stmts) LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
 828   {
 829     if (stmt->type == STMT_TYPE && type_get_type(stmt->u.type) == TYPE_INTERFACE)
 830     {
 831       type_t *iface = stmt->u.type;
 832       if (need_proxy(iface))
 833       {
 834         write_proxy(iface, proc_offset);
 835         if (type_iface_get_async_iface(iface))
 836           write_proxy(type_iface_get_async_iface(iface), proc_offset);
 837       }
 838     }
 839   }
 840 }
 841
 842 static int cmp_iid( const void *ptr1, const void *ptr2 )
 843 {
 844     const type_t * const *iface1 = ptr1;
 845     const type_t * const *iface2 = ptr2;
 846     const struct uuid *uuid1 = get_attrp( (*iface1)->attrs, ATTR_UUID );
 847     const struct uuid *uuid2 = get_attrp( (*iface2)->attrs, ATTR_UUID );
 848     return memcmp( uuid1, uuid2, sizeof(*uuid1) );
 849 }
 850
 851 static void build_iface_list( const statement_list_t *stmts, type_t **ifaces[], int *count )
 852 {
 853     const statement_t *stmt;
 854
 855     if (!stmts) return;
 856     LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
 857     {
 858         if (stmt->type == STMT_TYPE && type_get_type(stmt->u.type) == TYPE_INTERFACE)
 859         {
 860             type_t *iface = stmt->u.type;
 861             if (type_iface_get_inherit(iface) && need_proxy(iface))
 862             {
 863                 *ifaces = xrealloc( *ifaces, (*count + 1) * sizeof(**ifaces) );
 864                 (*ifaces)[(*count)++] = iface;
 865                 if (type_iface_get_async_iface(iface))
 866                 {
 867                     iface = type_iface_get_async_iface(iface);
 868                     *ifaces = xrealloc( *ifaces, (*count + 1) * sizeof(**ifaces) );
 869                     (*ifaces)[(*count)++] = iface;
 870                 }
 871             }
 872         }
 873     }
 874 }
 875
 876 static type_t **sort_interfaces( const statement_list_t *stmts, int *count )
 877 {
 878     type_t **ifaces = NULL;
 879
 880     *count = 0;
 881     build_iface_list( stmts, &ifaces, count );
 882     qsort( ifaces, *count, sizeof(*ifaces), cmp_iid );
 883     return ifaces;
 884 }
 885
 886 static void write_proxy_routines(const statement_list_t *stmts)
 887 {
 888   int expr_eval_routines;
 889   unsigned int proc_offset = 0;
 890   char *file_id = proxy_token;
 891   int i, count, have_baseiid = 0;
 892   unsigned int table_version;
 893   type_t **interfaces;
 894   const type_t * delegate_to;
 895
 896   print_proxy( "#ifndef __REDQ_RPCPROXY_H_VERSION__\n");
 897   print_proxy( "#define __REQUIRED_RPCPROXY_H_VERSION__ %u\n", interpreted_mode ? 475 : 440);
 898   print_proxy( "#endif\n");
 899   print_proxy( "\n");
 900   if (interpreted_mode) print_proxy( "#define USE_STUBLESS_PROXY\n");
 901   print_proxy( "#include \"rpcproxy.h\"\n");
 902   print_proxy( "#ifndef __RPCPROXY_H_VERSION__\n");
 903   print_proxy( "#error This code needs a newer version of rpcproxy.h\n");
 904   print_proxy( "#endif /* __RPCPROXY_H_VERSION__ */\n");
 905   print_proxy( "\n");
 906   print_proxy( "#include \"%s\"\n", header_name);
 907   print_proxy( "\n");
 908
 909   if (does_any_iface(stmts, need_proxy_and_inline_stubs))
 910   {
 911       write_exceptions( proxy );
 912       print_proxy( "\n");
 913       print_proxy( "struct __proxy_frame\n");
 914       print_proxy( "{\n");
 915       print_proxy( "    __DECL_EXCEPTION_FRAME\n");
 916       print_proxy( "    MIDL_STUB_MESSAGE _StubMsg;\n");
 917       print_proxy( "    void             *This;\n");
 918       print_proxy( "};\n");
 919       print_proxy( "\n");
 920       print_proxy("static int __proxy_filter( struct __proxy_frame *__frame )\n");
 921       print_proxy( "{\n");
 922       print_proxy( "    return (__frame->_StubMsg.dwStubPhase != PROXY_SENDRECEIVE);\n");
 923       print_proxy( "}\n");
 924       print_proxy( "\n");
 925   }
 926
 927   write_formatstringsdecl(proxy, indent, stmts, need_proxy);
 928   write_stubdescproto();
 929   write_proxy_stmts(stmts, &proc_offset);
 930
 931   expr_eval_routines = write_expr_eval_routines(proxy, proxy_token);
 932   if (expr_eval_routines)
 933       write_expr_eval_routine_list(proxy, proxy_token);
 934   write_user_quad_list(proxy);
 935   write_stubdesc(expr_eval_routines);
 936
 937   print_proxy( "#if !defined(__RPC_WIN%u__)\n", pointer_size == 8 ? 64 : 32);
 938   print_proxy( "#error Invalid build platform for this proxy.\n");
 939   print_proxy( "#endif\n");
 940   print_proxy( "\n");
 941   write_procformatstring(proxy, stmts, need_proxy);
 942   write_typeformatstring(proxy, stmts, need_proxy);
 943
 944   interfaces = sort_interfaces(stmts, &count);
 945   fprintf(proxy, "static const CInterfaceProxyVtbl* const _%s_ProxyVtblList[] =\n", file_id);
 946   fprintf(proxy, "{\n");
 947   for (i = 0; i < count; i++)
 948       fprintf(proxy, "    (const CInterfaceProxyVtbl*)&_%sProxyVtbl,\n", interfaces[i]->name);
 949   fprintf(proxy, "    0\n");
 950   fprintf(proxy, "};\n");
 951   fprintf(proxy, "\n");
 952
 953   fprintf(proxy, "static const CInterfaceStubVtbl* const _%s_StubVtblList[] =\n", file_id);
 954   fprintf(proxy, "{\n");
 955   for (i = 0; i < count; i++)
 956       fprintf(proxy, "    &_%sStubVtbl,\n", interfaces[i]->name);
 957   fprintf(proxy, "    0\n");
 958   fprintf(proxy, "};\n");
 959   fprintf(proxy, "\n");
 960
 961   fprintf(proxy, "static PCInterfaceName const _%s_InterfaceNamesList[] =\n", file_id);
 962   fprintf(proxy, "{\n");
 963   for (i = 0; i < count; i++)
 964       fprintf(proxy, "    \"%s\",\n", interfaces[i]->name);
 965   fprintf(proxy, "    0\n");
 966   fprintf(proxy, "};\n");
 967   fprintf(proxy, "\n");
 968
 969   for (i = 0; i < count; i++)
 970       if ((have_baseiid = get_delegation_indirect( interfaces[i], NULL ))) break;
 971
 972   if (have_baseiid)
 973   {
 974       fprintf(proxy, "static const IID * _%s_BaseIIDList[] =\n", file_id);
 975       fprintf(proxy, "{\n");
 976       for (i = 0; i < count; i++)
 977       {
 978           if (get_delegation_indirect(interfaces[i], &delegate_to))
 979               fprintf( proxy, "    &IID_%s,  /* %s */\n", delegate_to->name, interfaces[i]->name );
 980           else
 981               fprintf( proxy, "    0,\n" );
 982       }
 983       fprintf(proxy, "    0\n");
 984       fprintf(proxy, "};\n");
 985       fprintf(proxy, "\n");
 986   }
 987
 988   fprintf(proxy, "static int __stdcall _%s_IID_Lookup(const IID* pIID, int* pIndex)\n", file_id);
 989   fprintf(proxy, "{\n");
 990   fprintf(proxy, "    int low = 0, high = %d;\n", count - 1);
 991   fprintf(proxy, "\n");
 992   fprintf(proxy, "    while (low <= high)\n");
 993   fprintf(proxy, "    {\n");
 994   fprintf(proxy, "        int pos = (low + high) / 2;\n");
 995   fprintf(proxy, "        int res = IID_GENERIC_CHECK_IID(_%s, pIID, pos);\n", file_id);
 996   fprintf(proxy, "        if (!res) { *pIndex = pos; return 1; }\n");
 997   fprintf(proxy, "        if (res > 0) low = pos + 1;\n");
 998   fprintf(proxy, "        else high = pos - 1;\n");
 999   fprintf(proxy, "    }\n");
1000   fprintf(proxy, "    return 0;\n");
1001   fprintf(proxy, "}\n");
1002   fprintf(proxy, "\n");
1003
1004   table_version = interpreted_mode ? 2 : 1;
1005   for (i = 0; i < count; i++)
1006   {
1007       if (type_iface_get_async_iface(interfaces[i]) != interfaces[i]) continue;
1008       if (table_version != 6)
1009       {
1010           fprintf(proxy, "static const IID *_AsyncInterfaceTable[] =\n");
1011           fprintf(proxy, "{\n");
1012           table_version = 6;
1013       }
1014       fprintf(proxy, "    &IID_%s,\n", interfaces[i]->name);
1015       fprintf(proxy, "    (IID*)(LONG_PTR)-1,\n");
1016   }
1017   if (table_version == 6)
1018   {
1019       fprintf(proxy, "    0\n");
1020       fprintf(proxy, "};\n");
1021       fprintf(proxy, "\n");
1022   }
1023
1024   fprintf(proxy, "const ExtendedProxyFileInfo %s_ProxyFileInfo =\n", file_id);
1025   fprintf(proxy, "{\n");
1026   fprintf(proxy, "    (const PCInterfaceProxyVtblList*)_%s_ProxyVtblList,\n", file_id);
1027   fprintf(proxy, "    (const PCInterfaceStubVtblList*)_%s_StubVtblList,\n", file_id);
1028   fprintf(proxy, "    _%s_InterfaceNamesList,\n", file_id);
1029   if (have_baseiid) fprintf(proxy, "    _%s_BaseIIDList,\n", file_id);
1030   else fprintf(proxy, "    0,\n");
1031   fprintf(proxy, "    _%s_IID_Lookup,\n", file_id);
1032   fprintf(proxy, "    %d,\n", count);
1033   fprintf(proxy, "    %u,\n", table_version);
1034   fprintf(proxy, "    %s,\n", table_version == 6 ? "_AsyncInterfaceTable" : "0");
1035   fprintf(proxy, "    0,\n");
1036   fprintf(proxy, "    0,\n");
1037   fprintf(proxy, "    0\n");
1038   fprintf(proxy, "};\n");
1039 }
1040
1041 void write_proxies(const statement_list_t *stmts)
1042 {
1043   if (!do_proxies) return;
1044   if (do_everything && !need_proxy_file(stmts)) return;
1045
1046   init_proxy(stmts);
1047   if(!proxy) return;
1048
1049   write_proxy_routines( stmts );
1050   fclose(proxy);
1051 }