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   write_exceptions( proxy );
 118   print_proxy( "\n");
 119   print_proxy( "struct __proxy_frame\n");
 120   print_proxy( "{\n");
 121   print_proxy( "    __DECL_EXCEPTION_FRAME\n");
 122   print_proxy( "    MIDL_STUB_MESSAGE _StubMsg;\n");
 123   print_proxy( "    void             *This;\n");
 124   print_proxy( "};\n");
 125   print_proxy( "\n");
 126   print_proxy("static int __proxy_filter( struct __proxy_frame *__frame )\n");
 127   print_proxy( "{\n");
 128   print_proxy( "    return (__frame->_StubMsg.dwStubPhase != PROXY_SENDRECEIVE);\n");
 129   print_proxy( "}\n");
 130   print_proxy( "\n");
 131 }
 132
 133 static void clear_output_vars( const var_list_t *args )
 134 {
 135   const var_t *arg;
 136
 137   if (!args) return;
 138   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 139   {
 140     if (is_attr(arg->attrs, ATTR_OUT) && !is_attr(arg->attrs, ATTR_IN)) {
 141       print_proxy( "if(%s)\n", arg->name );
 142       indent++;
 143       print_proxy( "MIDL_memset( %s, 0, sizeof( *%s ));\n", arg->name, arg->name );
 144       indent--;
 145     }
 146   }
 147 }
 148
 149 int is_var_ptr(const var_t *v)
 150 {
 151   return is_ptr(v->type);
 152 }
 153
 154 int cant_be_null(const var_t *v)
 155 {
 156   /* Search backwards for the most recent pointer attribute.  */
 157   const attr_list_t *attrs = v->attrs;
 158   const type_t *type = v->type;
 159
 160   /* context handles have their own checking so they can be null for the
 161    * purposes of null ref pointer checking */
 162   if (is_aliaschain_attr(type, ATTR_CONTEXTHANDLE))
 163       return 0;
 164
 165   if (is_user_type(type))
 166       return 0;
 167
 168   if (!attrs && is_ptr(type))
 169   {
 170     attrs = type->attrs;
 171     type = type_pointer_get_ref(type);
 172   }
 173
 174   while (attrs)
 175   {
 176     int t = get_attrv(attrs, ATTR_POINTERTYPE);
 177
 178     if (t == RPC_FC_FP || t == RPC_FC_OP || t == RPC_FC_UP)
 179       return 0;
 180
 181     if (t == RPC_FC_RP)
 182       return 1;
 183
 184     if (is_ptr(type))
 185     {
 186       attrs = type->attrs;
 187       type = type_pointer_get_ref(type);
 188     }
 189     else
 190       attrs = NULL;
 191   }
 192
 193   return 1;                             /* Default is RPC_FC_RP.  */
 194 }
 195
 196 static int need_delegation(const type_t *iface)
 197 {
 198     return type_iface_get_inherit(iface) &&
 199            type_iface_get_inherit(type_iface_get_inherit(iface)) &&
 200            type_iface_get_inherit(iface)->ignore;
 201 }
 202
 203 static int get_delegation_indirect(const type_t *iface, const type_t ** delegate_to)
 204 {
 205   const type_t * cur_iface;
 206   for (cur_iface = iface; cur_iface != NULL; cur_iface = type_iface_get_inherit(cur_iface))
 207     if (need_delegation(cur_iface))
 208     {
 209       if(delegate_to)
 210         *delegate_to = type_iface_get_inherit(cur_iface);
 211       return 1;
 212     }
 213   return 0;
 214 }
 215
 216 static int need_delegation_indirect(const type_t *iface)
 217 {
 218   return get_delegation_indirect(iface, NULL);
 219 }
 220
 221 static void proxy_check_pointers( const var_list_t *args )
 222 {
 223   const var_t *arg;
 224
 225   if (!args) return;
 226   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 227   {
 228     if (is_var_ptr(arg) && cant_be_null(arg)) {
 229         print_proxy( "if(!%s)\n", arg->name );
 230         indent++;
 231         print_proxy( "RpcRaiseException(RPC_X_NULL_REF_POINTER);\n");
 232         indent--;
 233     }
 234   }
 235 }
 236
 237 static void free_variable( const var_t *arg, const char *local_var_prefix )
 238 {
 239   unsigned int type_offset = arg->type->typestring_offset;
 240   expr_t *iid;
 241   type_t *type = arg->type;
 242   expr_t *size = get_size_is_expr(type, arg->name);
 243
 244   if (size)
 245   {
 246     print_proxy( "__frame->_StubMsg.MaxCount = " );
 247     write_expr(proxy, size, 0, 1, NULL, NULL, local_var_prefix);
 248     fprintf(proxy, ";\n\n");
 249     print_proxy( "NdrClearOutParameters( &__frame->_StubMsg, ");
 250     fprintf(proxy, "&__MIDL_TypeFormatString.Format[%u], ", type_offset );
 251     fprintf(proxy, "(void*)%s );\n", arg->name );
 252     return;
 253   }
 254
 255   switch( type->type )
 256   {
 257   case RPC_FC_BYTE:
 258   case RPC_FC_CHAR:
 259   case RPC_FC_WCHAR:
 260   case RPC_FC_SHORT:
 261   case RPC_FC_USHORT:
 262   case RPC_FC_ENUM16:
 263   case RPC_FC_LONG:
 264   case RPC_FC_ULONG:
 265   case RPC_FC_ENUM32:
 266   case RPC_FC_STRUCT:
 267     break;
 268
 269   case RPC_FC_FP:
 270   case RPC_FC_IP:
 271     iid = get_attrp( arg->attrs, ATTR_IIDIS );
 272     if( iid )
 273     {
 274       print_proxy( "__frame->_StubMsg.MaxCount = (ULONG_PTR) " );
 275       write_expr(proxy, iid, 1, 1, NULL, NULL, local_var_prefix);
 276       print_proxy( ";\n\n" );
 277     }
 278     print_proxy( "NdrClearOutParameters( &__frame->_StubMsg, ");
 279     fprintf(proxy, "&__MIDL_TypeFormatString.Format[%u], ", type_offset );
 280     fprintf(proxy, "(void*)%s );\n", arg->name );
 281     break;
 282
 283   default:
 284     print_proxy("/* FIXME: %s code for %s type %d missing */\n", __FUNCTION__, arg->name, type->type );
 285   }
 286 }
 287
 288 static void proxy_free_variables( var_list_t *args, const char *local_var_prefix )
 289 {
 290   const var_t *arg;
 291
 292   if (!args) return;
 293   LIST_FOR_EACH_ENTRY( arg, args, const var_t, entry )
 294     if (is_attr(arg->attrs, ATTR_OUT))
 295     {
 296       free_variable( arg, local_var_prefix );
 297       fprintf(proxy, "\n");
 298     }
 299 }
 300
 301 static void gen_proxy(type_t *iface, const var_t *func, int idx,
 302                       unsigned int proc_offset)
 303 {
 304   int has_ret = !is_void(type_function_get_rettype(func->type));
 305   int has_full_pointer = is_full_pointer_function(func);
 306   const char *callconv = get_attrp(func->type->attrs, ATTR_CALLCONV);
 307   if (!callconv) callconv = "";
 308
 309   indent = 0;
 310   print_proxy( "static void __finally_%s_%s_Proxy( struct __proxy_frame *__frame )\n",
 311                iface->name, get_name(func) );
 312   print_proxy( "{\n");
 313   indent++;
 314   if (has_full_pointer) write_full_pointer_free(proxy, indent, func);
 315   print_proxy( "NdrProxyFreeBuffer( __frame->This, &__frame->_StubMsg );\n" );
 316   indent--;
 317   print_proxy( "}\n");
 318   print_proxy( "\n");
 319
 320   write_type_decl_left(proxy, type_function_get_rettype(func->type));
 321   print_proxy( " %s %s_%s_Proxy(\n", callconv, iface->name, get_name(func));
 322   write_args(proxy, type_get_function_args(func->type), iface->name, 1, TRUE);
 323   print_proxy( ")\n");
 324   print_proxy( "{\n");
 325   indent ++;
 326   print_proxy( "struct __proxy_frame __f, * const __frame = &__f;\n" );
 327   /* local variables */
 328   if (has_ret) {
 329     print_proxy( "%s", "" );
 330     write_type_decl_left(proxy, type_function_get_rettype(func->type));
 331     print_proxy( " _RetVal;\n");
 332   }
 333   print_proxy( "RPC_MESSAGE _RpcMessage;\n" );
 334   if (has_ret) {
 335     if (decl_indirect(type_function_get_rettype(func->type)))
 336       print_proxy("void *_p_%s = &%s;\n",
 337                  "_RetVal", "_RetVal");
 338   }
 339   print_proxy( "\n");
 340
 341   print_proxy( "RpcExceptionInit( __proxy_filter, __finally_%s_%s_Proxy );\n", iface->name, get_name(func) );
 342   print_proxy( "__frame->This = This;\n" );
 343
 344   if (has_full_pointer)
 345     write_full_pointer_init(proxy, indent, func, FALSE);
 346
 347   /* FIXME: trace */
 348   clear_output_vars( type_get_function_args(func->type) );
 349
 350   print_proxy( "RpcTryExcept\n" );
 351   print_proxy( "{\n" );
 352   indent++;
 353   print_proxy( "NdrProxyInitialize(This, &_RpcMessage, &__frame->_StubMsg, &Object_StubDesc, %d);\n", idx);
 354   proxy_check_pointers( type_get_function_args(func->type) );
 355
 356   print_proxy( "RpcTryFinally\n" );
 357   print_proxy( "{\n" );
 358   indent++;
 359
 360   write_remoting_arguments(proxy, indent, func, "", PASS_IN, PHASE_BUFFERSIZE);
 361
 362   print_proxy( "NdrProxyGetBuffer(This, &__frame->_StubMsg);\n" );
 363
 364   write_remoting_arguments(proxy, indent, func, "", PASS_IN, PHASE_MARSHAL);
 365
 366   print_proxy( "NdrProxySendReceive(This, &__frame->_StubMsg);\n" );
 367   fprintf(proxy, "\n");
 368   print_proxy( "__frame->_StubMsg.BufferStart = _RpcMessage.Buffer;\n" );
 369   print_proxy( "__frame->_StubMsg.BufferEnd   = __frame->_StubMsg.BufferStart + _RpcMessage.BufferLength;\n\n" );
 370
 371   print_proxy("if ((_RpcMessage.DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 372   indent++;
 373   print_proxy("NdrConvert( &__frame->_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
 374   indent--;
 375   fprintf(proxy, "\n");
 376
 377   write_remoting_arguments(proxy, indent, func, "", PASS_OUT, PHASE_UNMARSHAL);
 378
 379   if (has_ret)
 380   {
 381       if (decl_indirect(type_function_get_rettype(func->type)))
 382           print_proxy("MIDL_memset(&%s, 0, sizeof(%s));\n", "_RetVal", "_RetVal");
 383       else if (is_ptr(type_function_get_rettype(func->type)) ||
 384                is_array(type_function_get_rettype(func->type)))
 385           print_proxy("%s = 0;\n", "_RetVal");
 386       write_remoting_arguments(proxy, indent, func, "", PASS_RETURN, PHASE_UNMARSHAL);
 387   }
 388
 389   indent--;
 390   print_proxy( "}\n");
 391   print_proxy( "RpcFinally\n" );
 392   print_proxy( "{\n" );
 393   indent++;
 394   print_proxy( "__finally_%s_%s_Proxy( __frame );\n", iface->name, get_name(func) );
 395   indent--;
 396   print_proxy( "}\n");
 397   print_proxy( "RpcEndFinally\n" );
 398   indent--;
 399   print_proxy( "}\n" );
 400   print_proxy( "RpcExcept(__frame->_StubMsg.dwStubPhase != PROXY_SENDRECEIVE)\n" );
 401   print_proxy( "{\n" );
 402   if (has_ret) {
 403     indent++;
 404     proxy_free_variables( type_get_function_args(func->type), "" );
 405     print_proxy( "_RetVal = NdrProxyErrorHandler(RpcExceptionCode());\n" );
 406     indent--;
 407   }
 408   print_proxy( "}\n" );
 409   print_proxy( "RpcEndExcept\n" );
 410
 411   if (has_ret) {
 412     print_proxy( "return _RetVal;\n" );
 413   }
 414   indent--;
 415   print_proxy( "}\n");
 416   print_proxy( "\n");
 417 }
 418
 419 static void gen_stub(type_t *iface, const var_t *func, const char *cas,
 420                      unsigned int proc_offset)
 421 {
 422   const var_t *arg;
 423   int has_ret = !is_void(type_function_get_rettype(func->type));
 424   int has_full_pointer = is_full_pointer_function(func);
 425
 426   indent = 0;
 427   print_proxy( "struct __frame_%s_%s_Stub\n{\n", iface->name, get_name(func));
 428   indent++;
 429   print_proxy( "__DECL_EXCEPTION_FRAME\n" );
 430   print_proxy( "MIDL_STUB_MESSAGE _StubMsg;\n");
 431   print_proxy( "%s * _This;\n", iface->name );
 432   declare_stub_args( proxy, indent, func );
 433   indent--;
 434   print_proxy( "};\n\n" );
 435
 436   print_proxy( "static void __finally_%s_%s_Stub(", iface->name, get_name(func) );
 437   print_proxy( " struct __frame_%s_%s_Stub *__frame )\n{\n", iface->name, get_name(func) );
 438   indent++;
 439   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_FREE);
 440   if (has_full_pointer)
 441     write_full_pointer_free(proxy, indent, func);
 442   indent--;
 443   print_proxy( "}\n\n" );
 444
 445   print_proxy( "void __RPC_STUB %s_%s_Stub(\n", iface->name, get_name(func));
 446   indent++;
 447   print_proxy( "IRpcStubBuffer* This,\n");
 448   print_proxy( "IRpcChannelBuffer *_pRpcChannelBuffer,\n");
 449   print_proxy( "PRPC_MESSAGE _pRpcMessage,\n");
 450   print_proxy( "DWORD* _pdwStubPhase)\n");
 451   indent--;
 452   print_proxy( "{\n");
 453   indent++;
 454   print_proxy( "struct __frame_%s_%s_Stub __f, * const __frame = &__f;\n\n",
 455                iface->name, get_name(func) );
 456
 457   print_proxy("__frame->_This = (%s*)((CStdStubBuffer*)This)->pvServerObject;\n\n", iface->name);
 458
 459   /* FIXME: trace */
 460
 461   print_proxy("NdrStubInitialize(_pRpcMessage, &__frame->_StubMsg, &Object_StubDesc, _pRpcChannelBuffer);\n");
 462   fprintf(proxy, "\n");
 463   print_proxy( "RpcExceptionInit( 0, __finally_%s_%s_Stub );\n", iface->name, get_name(func) );
 464
 465   write_parameters_init(proxy, indent, func, "__frame->");
 466
 467   print_proxy("RpcTryFinally\n");
 468   print_proxy("{\n");
 469   indent++;
 470   if (has_full_pointer)
 471     write_full_pointer_init(proxy, indent, func, TRUE);
 472   print_proxy("if ((_pRpcMessage->DataRepresentation & 0xffff) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 473   indent++;
 474   print_proxy("NdrConvert( &__frame->_StubMsg, &__MIDL_ProcFormatString.Format[%u]);\n", proc_offset );
 475   indent--;
 476   fprintf(proxy, "\n");
 477
 478   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_IN, PHASE_UNMARSHAL);
 479   fprintf(proxy, "\n");
 480
 481   assign_stub_out_args( proxy, indent, func, "__frame->" );
 482
 483   print_proxy("*_pdwStubPhase = STUB_CALL_SERVER;\n");
 484   fprintf(proxy, "\n");
 485   print_proxy( "%s", has_ret ? "__frame->_RetVal = " : "" );
 486   if (cas) fprintf(proxy, "%s_%s_Stub", iface->name, cas);
 487   else fprintf(proxy, "__frame->_This->lpVtbl->%s", get_name(func));
 488   fprintf(proxy, "(__frame->_This");
 489
 490   if (type_get_function_args(func->type))
 491   {
 492       LIST_FOR_EACH_ENTRY( arg, type_get_function_args(func->type), const var_t, entry )
 493           fprintf(proxy, ", %s__frame->%s", arg->type->declarray ? "*" : "", arg->name);
 494   }
 495   fprintf(proxy, ");\n");
 496   fprintf(proxy, "\n");
 497   print_proxy("*_pdwStubPhase = STUB_MARSHAL;\n");
 498   fprintf(proxy, "\n");
 499
 500   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_BUFFERSIZE);
 501
 502   if (!is_void(type_function_get_rettype(func->type)))
 503     write_remoting_arguments(proxy, indent, func, "__frame->", PASS_RETURN, PHASE_BUFFERSIZE);
 504
 505   print_proxy("NdrStubGetBuffer(This, _pRpcChannelBuffer, &__frame->_StubMsg);\n");
 506
 507   write_remoting_arguments(proxy, indent, func, "__frame->", PASS_OUT, PHASE_MARSHAL);
 508   fprintf(proxy, "\n");
 509
 510   /* marshall the return value */
 511   if (!is_void(type_function_get_rettype(func->type)))
 512     write_remoting_arguments(proxy, indent, func, "__frame->", PASS_RETURN, PHASE_MARSHAL);
 513
 514   indent--;
 515   print_proxy("}\n");
 516   print_proxy("RpcFinally\n");
 517   print_proxy("{\n");
 518   indent++;
 519   print_proxy( "__finally_%s_%s_Stub( __frame );\n", iface->name, get_name(func) );
 520   indent--;
 521   print_proxy("}\n");
 522   print_proxy("RpcEndFinally\n");
 523
 524   print_proxy("_pRpcMessage->BufferLength = __frame->_StubMsg.Buffer - (unsigned char *)_pRpcMessage->Buffer;\n");
 525   indent--;
 526
 527   print_proxy("}\n");
 528   print_proxy("\n");
 529 }
 530
 531 static int count_methods(type_t *iface)
 532 {
 533     const statement_t *stmt;
 534     int count = 0;
 535
 536     if (type_iface_get_inherit(iface))
 537         count = count_methods(type_iface_get_inherit(iface));
 538
 539     STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 540         const var_t *func = stmt->u.var;
 541         if (!is_callas(func->attrs)) count++;
 542     }
 543     return count;
 544 }
 545
 546 static const statement_t * get_callas_source(const type_t * iface, const var_t * def)
 547 {
 548   const statement_t * source;
 549   STATEMENTS_FOR_EACH_FUNC( source, type_iface_get_stmts(iface)) {
 550     const var_t * cas = is_callas(source->u.var->attrs );
 551     if (cas && !strcmp(def->name, cas->name))
 552       return source;
 553   }
 554   return NULL;
 555 }
 556
 557 static int write_proxy_methods(type_t *iface, int skip)
 558 {
 559   const statement_t *stmt;
 560   int i = 0;
 561
 562   if (type_iface_get_inherit(iface))
 563     i = write_proxy_methods(type_iface_get_inherit(iface),
 564                             need_delegation(iface));
 565   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 566     const var_t *func = stmt->u.var;
 567     if (!is_callas(func->attrs)) {
 568       if (i != func->type->details.function->idx )
 569         error("widl internal error: method index mismatch\n");
 570       if (i) fprintf(proxy, ",\n");
 571       if (skip || (is_local(func->attrs) && !get_callas_source(iface, func)))
 572            print_proxy( "0  /* %s_%s_Proxy */", iface->name, get_name(func));
 573       else print_proxy( "%s_%s_Proxy", iface->name, get_name(func));
 574       i++;
 575     }
 576   }
 577   return i;
 578 }
 579
 580 static int write_stub_methods(type_t *iface, int skip)
 581 {
 582   const statement_t *stmt;
 583   int i = 0;
 584
 585   if (type_iface_get_inherit(iface))
 586     i = write_stub_methods(type_iface_get_inherit(iface), need_delegation(iface));
 587   else
 588     return i; /* skip IUnknown */
 589
 590   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 591     const var_t *func = stmt->u.var;
 592     if (!is_callas(func->attrs)) {
 593       int missing = 0;
 594       const char * fname = get_name(func);
 595       if(is_local(func->attrs)) {
 596         const statement_t * callas_source = get_callas_source(iface, func);
 597         if(!callas_source)
 598           missing = 1;
 599         else
 600           fname = get_name(callas_source->u.var);
 601       }
 602       if (i) fprintf(proxy,",\n");
 603       if (skip || missing) print_proxy("STUB_FORWARDING_FUNCTION");
 604       else print_proxy( "%s_%s_Stub", iface->name, fname);
 605       i++;
 606     }
 607   }
 608   return i;
 609 }
 610
 611 static void write_proxy(type_t *iface, unsigned int *proc_offset)
 612 {
 613   int count;
 614   const statement_t *stmt;
 615   int first_func = 1;
 616
 617   /* FIXME: check for [oleautomation], shouldn't generate proxies/stubs if specified */
 618
 619   STATEMENTS_FOR_EACH_FUNC(stmt, type_iface_get_stmts(iface)) {
 620     const var_t *func = stmt->u.var;
 621     if (first_func) {
 622       fprintf(proxy, "/*****************************************************************************\n");
 623       fprintf(proxy, " * %s interface\n", iface->name);
 624       fprintf(proxy, " */\n");
 625       first_func = 0;
 626     }
 627     if (!is_local(func->attrs)) {
 628       const var_t *cas = is_callas(func->attrs);
 629       const char *cname = cas ? cas->name : NULL;
 630       int idx = func->type->details.function->idx;
 631       if (cname) {
 632           const statement_t *stmt2;
 633           STATEMENTS_FOR_EACH_FUNC(stmt2, type_iface_get_stmts(iface)) {
 634               const var_t *m = stmt2->u.var;
 635               if (!strcmp(m->name, cname))
 636               {
 637                   idx = m->type->details.function->idx;
 638                   break;
 639               }
 640           }
 641       }
 642       gen_proxy(iface, func, idx, *proc_offset);
 643       gen_stub(iface, func, cname, *proc_offset);
 644       *proc_offset += get_size_procformatstring_func( func );
 645     }
 646   }
 647
 648   count = count_methods(iface);
 649
 650   /* proxy vtable */
 651   print_proxy( "static const CINTERFACE_PROXY_VTABLE(%d) _%sProxyVtbl =\n", count, iface->name);
 652   print_proxy( "{\n");
 653   indent++;
 654   print_proxy( "{\n");
 655   indent++;
 656   print_proxy( "&IID_%s,\n", iface->name);
 657   indent--;
 658   print_proxy( "},\n");
 659   print_proxy( "{\n");
 660   indent++;
 661   write_proxy_methods(iface, FALSE);
 662   fprintf(proxy, "\n");
 663   indent--;
 664   print_proxy( "}\n");
 665   indent--;
 666   print_proxy( "};\n");
 667   fprintf(proxy, "\n\n");
 668
 669   /* stub vtable */
 670   print_proxy( "static const PRPC_STUB_FUNCTION %s_table[] =\n", iface->name);
 671   print_proxy( "{\n");
 672   indent++;
 673   write_stub_methods(iface, FALSE);
 674   fprintf(proxy, "\n");
 675   indent--;
 676   fprintf(proxy, "};\n");
 677   print_proxy( "\n");
 678   print_proxy( "static %sCInterfaceStubVtbl _%sStubVtbl =\n",
 679                need_delegation_indirect(iface) ? "" : "const ", iface->name);
 680   print_proxy( "{\n");
 681   indent++;
 682   print_proxy( "{\n");
 683   indent++;
 684   print_proxy( "&IID_%s,\n", iface->name);
 685   print_proxy( "0,\n");
 686   print_proxy( "%d,\n", count);
 687   print_proxy( "&%s_table[-3],\n", iface->name);
 688   indent--;
 689   print_proxy( "},\n");
 690   print_proxy( "{\n");
 691   indent++;
 692   print_proxy( "CStdStubBuffer_%s\n", need_delegation_indirect(iface) ? "DELEGATING_METHODS" : "METHODS");
 693   indent--;
 694   print_proxy( "}\n");
 695   indent--;
 696   print_proxy( "};\n");
 697   print_proxy( "\n");
 698 }
 699
 700 static int does_any_iface(const statement_list_t *stmts, type_pred_t pred)
 701 {
 702   const statement_t *stmt;
 703
 704   if (stmts)
 705     LIST_FOR_EACH_ENTRY(stmt, stmts, const statement_t, entry)
 706     {
 707       if (stmt->type == STMT_LIBRARY)
 708       {
 709           if (does_any_iface(stmt->u.lib->stmts, pred))
 710               return TRUE;
 711       }
 712       else if (stmt->type == STMT_TYPE && stmt->u.type->type == RPC_FC_IP)
 713       {
 714         if (pred(stmt->u.type))
 715           return TRUE;
 716       }
 717     }
 718
 719   return FALSE;
 720 }
 721
 722 int need_proxy(const type_t *iface)
 723 {
 724   return is_object(iface->attrs) && !is_local(iface->attrs);
 725 }
 726
 727 int need_stub(const type_t *iface)
 728 {
 729   return !is_object(iface->attrs) && !is_local(iface->attrs);
 730 }
 731
 732 int need_proxy_file(const statement_list_t *stmts)
 733 {
 734   return does_any_iface(stmts, need_proxy);
 735 }
 736
 737 int need_stub_files(const statement_list_t *stmts)
 738 {
 739   return does_any_iface(stmts, need_stub);
 740 }
 741
 742 static void write_proxy_stmts(const statement_list_t *stmts, unsigned int *proc_offset)
 743 {
 744   const statement_t *stmt;
 745   if (stmts) LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
 746   {
 747     if (stmt->type == STMT_LIBRARY)
 748       write_proxy_stmts(stmt->u.lib->stmts, proc_offset);
 749     else if (stmt->type == STMT_TYPE && stmt->u.type->type == RPC_FC_IP)
 750     {
 751       if (need_proxy(stmt->u.type))
 752         write_proxy(stmt->u.type, proc_offset);
 753     }
 754   }
 755 }
 756
 757 static int cmp_iid( const void *ptr1, const void *ptr2 )
 758 {
 759     const type_t * const *iface1 = ptr1;
 760     const type_t * const *iface2 = ptr2;
 761     const UUID *uuid1 = get_attrp( (*iface1)->attrs, ATTR_UUID );
 762     const UUID *uuid2 = get_attrp( (*iface2)->attrs, ATTR_UUID );
 763     return memcmp( uuid1, uuid2, sizeof(UUID) );
 764 }
 765
 766 static void build_iface_list( const statement_list_t *stmts, type_t **ifaces[], int *count )
 767 {
 768     const statement_t *stmt;
 769
 770     if (!stmts) return;
 771     LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
 772     {
 773         if (stmt->type == STMT_LIBRARY)
 774             build_iface_list(stmt->u.lib->stmts, ifaces, count);
 775         else if (stmt->type == STMT_TYPE && stmt->u.type->type == RPC_FC_IP)
 776         {
 777             type_t *iface = stmt->u.type;
 778             if (type_iface_get_inherit(iface) && need_proxy(iface))
 779             {
 780                 *ifaces = xrealloc( *ifaces, (*count + 1) * sizeof(*ifaces) );
 781                 (*ifaces)[(*count)++] = iface;
 782             }
 783         }
 784     }
 785 }
 786
 787 static type_t **sort_interfaces( const statement_list_t *stmts, int *count )
 788 {
 789     type_t **ifaces = NULL;
 790
 791     *count = 0;
 792     build_iface_list( stmts, &ifaces, count );
 793     qsort( ifaces, *count, sizeof(*ifaces), cmp_iid );
 794     return ifaces;
 795 }
 796
 797 static void write_proxy_routines(const statement_list_t *stmts)
 798 {
 799   int expr_eval_routines;
 800   unsigned int proc_offset = 0;
 801
 802   write_formatstringsdecl(proxy, indent, stmts, need_proxy);
 803   write_stubdescproto();
 804   write_proxy_stmts(stmts, &proc_offset);
 805
 806   expr_eval_routines = write_expr_eval_routines(proxy, proxy_token);
 807   if (expr_eval_routines)
 808       write_expr_eval_routine_list(proxy, proxy_token);
 809   write_user_quad_list(proxy);
 810   write_stubdesc(expr_eval_routines);
 811
 812   print_proxy( "#if !defined(__RPC_WIN%u__)\n", pointer_size == 8 ? 64 : 32);
 813   print_proxy( "#error Currently only Wine and WIN32 are supported.\n");
 814   print_proxy( "#endif\n");
 815   print_proxy( "\n");
 816   write_procformatstring(proxy, stmts, need_proxy);
 817   write_typeformatstring(proxy, stmts, need_proxy);
 818
 819 }
 820
 821 void write_proxies(const statement_list_t *stmts)
 822 {
 823   char *file_id = proxy_token;
 824   int i, count, have_baseiid;
 825   type_t **interfaces;
 826   const type_t * delegate_to;
 827
 828   if (!do_proxies) return;
 829   if (do_everything && !need_proxy_file(stmts)) return;
 830
 831   init_proxy(stmts);
 832   if(!proxy) return;
 833
 834   if (do_win32 && do_win64)
 835   {
 836       fprintf(proxy, "\n#ifndef _WIN64\n\n");
 837       pointer_size = 4;
 838       write_proxy_routines( stmts );
 839       fprintf(proxy, "\n#else /* _WIN64 */\n\n");
 840       pointer_size = 8;
 841       write_proxy_routines( stmts );
 842       fprintf(proxy, "#endif /* _WIN64 */\n\n");
 843   }
 844   else if (do_win32)
 845   {
 846       pointer_size = 4;
 847       write_proxy_routines( stmts );
 848   }
 849   else if (do_win64)
 850   {
 851       pointer_size = 8;
 852       write_proxy_routines( stmts );
 853   }
 854
 855   interfaces = sort_interfaces(stmts, &count);
 856   fprintf(proxy, "static const CInterfaceProxyVtbl* const _%s_ProxyVtblList[] =\n", file_id);
 857   fprintf(proxy, "{\n");
 858   for (i = 0; i < count; i++)
 859       fprintf(proxy, "    (const CInterfaceProxyVtbl*)&_%sProxyVtbl,\n", interfaces[i]->name);
 860   fprintf(proxy, "    0\n");
 861   fprintf(proxy, "};\n");
 862   fprintf(proxy, "\n");
 863
 864   fprintf(proxy, "static const CInterfaceStubVtbl* const _%s_StubVtblList[] =\n", file_id);
 865   fprintf(proxy, "{\n");
 866   for (i = 0; i < count; i++)
 867       fprintf(proxy, "    &_%sStubVtbl,\n", interfaces[i]->name);
 868   fprintf(proxy, "    0\n");
 869   fprintf(proxy, "};\n");
 870   fprintf(proxy, "\n");
 871
 872   fprintf(proxy, "static PCInterfaceName const _%s_InterfaceNamesList[] =\n", file_id);
 873   fprintf(proxy, "{\n");
 874   for (i = 0; i < count; i++)
 875       fprintf(proxy, "    \"%s\",\n", interfaces[i]->name);
 876   fprintf(proxy, "    0\n");
 877   fprintf(proxy, "};\n");
 878   fprintf(proxy, "\n");
 879
 880   if ((have_baseiid = does_any_iface(stmts, need_delegation_indirect)))
 881   {
 882       fprintf(proxy, "static const IID * _%s_BaseIIDList[] =\n", file_id);
 883       fprintf(proxy, "{\n");
 884       for (i = 0; i < count; i++)
 885       {
 886           if (get_delegation_indirect(interfaces[i], &delegate_to))
 887               fprintf( proxy, "    &IID_%s,  /* %s */\n", delegate_to->name, interfaces[i]->name );
 888           else
 889               fprintf( proxy, "    0,\n" );
 890       }
 891       fprintf(proxy, "    0\n");
 892       fprintf(proxy, "};\n");
 893       fprintf(proxy, "\n");
 894   }
 895
 896   fprintf(proxy, "static int __stdcall _%s_IID_Lookup(const IID* pIID, int* pIndex)\n", file_id);
 897   fprintf(proxy, "{\n");
 898   fprintf(proxy, "    int low = 0, high = %d;\n", count - 1);
 899   fprintf(proxy, "\n");
 900   fprintf(proxy, "    while (low <= high)\n");
 901   fprintf(proxy, "    {\n");
 902   fprintf(proxy, "        int pos = (low + high) / 2;\n");
 903   fprintf(proxy, "        int res = IID_GENERIC_CHECK_IID(_%s, pIID, pos);\n", file_id);
 904   fprintf(proxy, "        if (!res) { *pIndex = pos; return 1; }\n");
 905   fprintf(proxy, "        if (res > 0) low = pos + 1;\n");
 906   fprintf(proxy, "        else high = pos - 1;\n");
 907   fprintf(proxy, "    }\n");
 908   fprintf(proxy, "    return 0;\n");
 909   fprintf(proxy, "}\n");
 910   fprintf(proxy, "\n");
 911
 912   fprintf(proxy, "const ExtendedProxyFileInfo %s_ProxyFileInfo DECLSPEC_HIDDEN =\n", file_id);
 913   fprintf(proxy, "{\n");
 914   fprintf(proxy, "    (const PCInterfaceProxyVtblList*)_%s_ProxyVtblList,\n", file_id);
 915   fprintf(proxy, "    (const PCInterfaceStubVtblList*)_%s_StubVtblList,\n", file_id);
 916   fprintf(proxy, "    _%s_InterfaceNamesList,\n", file_id);
 917   if (have_baseiid) fprintf(proxy, "    _%s_BaseIIDList,\n", file_id);
 918   else fprintf(proxy, "    0,\n");
 919   fprintf(proxy, "    _%s_IID_Lookup,\n", file_id);
 920   fprintf(proxy, "    %d,\n", count);
 921   fprintf(proxy, "    1,\n");
 922   fprintf(proxy, "    0,\n");
 923   fprintf(proxy, "    0,\n");
 924   fprintf(proxy, "    0,\n");
 925   fprintf(proxy, "    0\n");
 926   fprintf(proxy, "};\n");
 927
 928   fclose(proxy);
 929 }