tools/widl/server.c

   1 /*
   2  * IDL Compiler
   3  *
   4  * Copyright 2005-2006 Eric Kohl
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #ifdef HAVE_UNISTD_H
  27 # include <unistd.h>
  28 #endif
  29 #include <string.h>
  30 #include <ctype.h>
  31
  32 #include "widl.h"
  33 #include "utils.h"
  34 #include "parser.h"
  35 #include "header.h"
  36
  37 #include "typegen.h"
  38
  39 static FILE* server;
  40 static int indent = 0;
  41
  42
  43 static void print_server(const char *format, ...) __attribute__((format (printf, 1, 2)));
  44 static void print_server(const char *format, ...)
  45 {
  46     va_list va;
  47     va_start(va, format);
  48     print(server, indent, format, va);
  49     va_end(va);
  50 }
  51
  52 static void write_function_stubs(type_t *iface, unsigned int *proc_offset)
  53 {
  54     const statement_t *stmt;
  55     const var_t *var;
  56     const var_t* explicit_handle_var;
  57
  58     STATEMENTS_FOR_EACH_FUNC( stmt, type_iface_get_stmts(iface) )
  59     {
  60         const var_t *func = stmt->u.var;
  61         int has_full_pointer = is_full_pointer_function(func);
  62
  63         /* check for a defined binding handle */
  64         explicit_handle_var = get_explicit_handle_var(func);
  65
  66         print_server("struct __frame_%s_%s\n{\n", iface->name, get_name(func));
  67         indent++;
  68         print_server("__DECL_EXCEPTION_FRAME\n");
  69         print_server("MIDL_STUB_MESSAGE _StubMsg;\n");
  70
  71         /* Declare arguments */
  72         declare_stub_args(server, indent, func);
  73
  74         indent--;
  75         print_server("};\n\n");
  76
  77         print_server("static void __finally_%s_%s(", iface->name, get_name(func));
  78         fprintf(server," struct __frame_%s_%s *__frame )\n{\n", iface->name, get_name(func));
  79
  80         indent++;
  81         write_remoting_arguments(server, indent, func, "__frame->", PASS_OUT, PHASE_FREE);
  82
  83         if (!is_void(type_function_get_rettype(func->type)))
  84             write_remoting_arguments(server, indent, func, "__frame->", PASS_RETURN, PHASE_FREE);
  85
  86         if (has_full_pointer)
  87             write_full_pointer_free(server, indent, func);
  88
  89         indent--;
  90         print_server("}\n\n");
  91
  92         print_server("void __RPC_STUB %s_%s( PRPC_MESSAGE _pRpcMessage )\n", iface->name, get_name(func));
  93
  94         /* write the functions body */
  95         fprintf(server, "{\n");
  96         indent++;
  97         print_server("struct __frame_%s_%s __f, * const __frame = &__f;\n", iface->name, get_name(func));
  98         if (has_out_arg_or_return(func)) print_server("RPC_STATUS _Status;\n");
  99         fprintf(server, "\n");
 100
 101         print_server("NdrServerInitializeNew(\n");
 102         indent++;
 103         print_server("_pRpcMessage,\n");
 104         print_server("&__frame->_StubMsg,\n");
 105         print_server("&%s_StubDesc);\n", iface->name);
 106         indent--;
 107         fprintf(server, "\n");
 108         print_server( "RpcExceptionInit( __server_filter, __finally_%s_%s );\n", iface->name, get_name(func));
 109
 110         write_parameters_init(server, indent, func, "__frame->");
 111
 112         if (explicit_handle_var)
 113         {
 114             print_server("__frame->%s = _pRpcMessage->Handle;\n", explicit_handle_var->name);
 115             fprintf(server, "\n");
 116         }
 117
 118         print_server("RpcTryFinally\n");
 119         print_server("{\n");
 120         indent++;
 121         print_server("RpcTryExcept\n");
 122         print_server("{\n");
 123         indent++;
 124
 125         if (has_full_pointer)
 126             write_full_pointer_init(server, indent, func, TRUE);
 127
 128         if (type_get_function_args(func->type))
 129         {
 130             print_server("if ((_pRpcMessage->DataRepresentation & 0x0000FFFFUL) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 131             indent++;
 132             print_server("NdrConvert(&__frame->_StubMsg, (PFORMAT_STRING)&__MIDL_ProcFormatString.Format[%u]);\n",
 133                          *proc_offset);
 134             indent--;
 135             fprintf(server, "\n");
 136
 137             /* unmarshall arguments */
 138             write_remoting_arguments(server, indent, func, "__frame->", PASS_IN, PHASE_UNMARSHAL);
 139         }
 140
 141         print_server("if (__frame->_StubMsg.Buffer > __frame->_StubMsg.BufferEnd)\n");
 142         print_server("{\n");
 143         indent++;
 144         print_server("RpcRaiseException(RPC_X_BAD_STUB_DATA);\n");
 145         indent--;
 146         print_server("}\n");
 147         indent--;
 148         print_server("}\n");
 149         print_server("RpcExcept(RPC_BAD_STUB_DATA_EXCEPTION_FILTER)\n");
 150         print_server("{\n");
 151         indent++;
 152         print_server("RpcRaiseException(RPC_X_BAD_STUB_DATA);\n");
 153         indent--;
 154         print_server("}\n");
 155         print_server("RpcEndExcept\n");
 156         fprintf(server, "\n");
 157
 158         /* Assign 'out' arguments */
 159         assign_stub_out_args(server, indent, func, "__frame->");
 160
 161         /* Call the real server function */
 162         print_server("%s%s%s",
 163                      is_void(type_function_get_rettype(func->type)) ? "" : "__frame->_RetVal = ",
 164                      prefix_server, get_name(func));
 165
 166         if (type_get_function_args(func->type))
 167         {
 168             int first_arg = 1;
 169
 170             fprintf(server, "(\n");
 171             indent++;
 172             LIST_FOR_EACH_ENTRY( var, type_get_function_args(func->type), const var_t, entry )
 173             {
 174                 if (first_arg)
 175                     first_arg = 0;
 176                 else
 177                     fprintf(server, ",\n");
 178                 if (is_context_handle(var->type))
 179                 {
 180                     /* if the context_handle attribute appears in the chain of types
 181                      * without pointers being followed, then the context handle must
 182                      * be direct, otherwise it is a pointer */
 183                     int is_ch_ptr = is_aliaschain_attr(var->type, ATTR_CONTEXTHANDLE) ? FALSE : TRUE;
 184                     print_server("(");
 185                     write_type_decl_left(server, var->type);
 186                     fprintf(server, ")%sNDRSContextValue(__frame->%s)",
 187                             is_ch_ptr ? "" : "*", var->name);
 188                 }
 189                 else
 190                 {
 191                     print_server("%s__frame->%s", is_array(var->type) && !type_array_is_decl_as_ptr(var->type) ? "*" : "", var->name);
 192                 }
 193             }
 194             fprintf(server, ");\n");
 195             indent--;
 196         }
 197         else
 198         {
 199             fprintf(server, "();\n");
 200         }
 201
 202         if (has_out_arg_or_return(func))
 203         {
 204             write_remoting_arguments(server, indent, func, "__frame->", PASS_OUT, PHASE_BUFFERSIZE);
 205
 206             if (!is_void(type_function_get_rettype(func->type)))
 207                 write_remoting_arguments(server, indent, func, "__frame->", PASS_RETURN, PHASE_BUFFERSIZE);
 208
 209             print_server("_pRpcMessage->BufferLength = __frame->_StubMsg.BufferLength;\n");
 210             fprintf(server, "\n");
 211             print_server("_Status = I_RpcGetBuffer(_pRpcMessage);\n");
 212             print_server("if (_Status)\n");
 213             indent++;
 214             print_server("RpcRaiseException(_Status);\n");
 215             indent--;
 216             fprintf(server, "\n");
 217             print_server("__frame->_StubMsg.Buffer = _pRpcMessage->Buffer;\n");
 218             fprintf(server, "\n");
 219         }
 220
 221         /* marshall arguments */
 222         write_remoting_arguments(server, indent, func, "__frame->", PASS_OUT, PHASE_MARSHAL);
 223
 224         /* marshall the return value */
 225         if (!is_void(type_function_get_rettype(func->type)))
 226             write_remoting_arguments(server, indent, func, "__frame->", PASS_RETURN, PHASE_MARSHAL);
 227
 228         indent--;
 229         print_server("}\n");
 230         print_server("RpcFinally\n");
 231         print_server("{\n");
 232         indent++;
 233         print_server("__finally_%s_%s( __frame );\n", iface->name, get_name(func));
 234         indent--;
 235         print_server("}\n");
 236         print_server("RpcEndFinally\n");
 237
 238         /* calculate buffer length */
 239         fprintf(server, "\n");
 240         print_server("_pRpcMessage->BufferLength = __frame->_StubMsg.Buffer - (unsigned char *)_pRpcMessage->Buffer;\n");
 241         indent--;
 242         fprintf(server, "}\n");
 243         fprintf(server, "\n");
 244
 245         /* update proc_offset */
 246         *proc_offset += get_size_procformatstring_func( func );
 247     }
 248 }
 249
 250
 251 static void write_dispatchtable(type_t *iface)
 252 {
 253     unsigned int ver = get_attrv(iface->attrs, ATTR_VERSION);
 254     unsigned int method_count = 0;
 255     const statement_t *stmt;
 256
 257     print_server("static RPC_DISPATCH_FUNCTION %s_table[] =\n", iface->name);
 258     print_server("{\n");
 259     indent++;
 260
 261     STATEMENTS_FOR_EACH_FUNC( stmt, type_iface_get_stmts(iface) )
 262     {
 263         var_t *func = stmt->u.var;
 264         print_server("%s_%s,\n", iface->name, get_name(func));
 265         method_count++;
 266     }
 267     print_server("0\n");
 268     indent--;
 269     print_server("};\n");
 270     print_server("static RPC_DISPATCH_TABLE %s_v%d_%d_DispatchTable =\n", iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 271     print_server("{\n");
 272     indent++;
 273     print_server("%u,\n", method_count);
 274     print_server("%s_table\n", iface->name);
 275     indent--;
 276     print_server("};\n");
 277     fprintf(server, "\n");
 278 }
 279
 280
 281 static void write_stubdescdecl(type_t *iface)
 282 {
 283     print_server("static const MIDL_STUB_DESC %s_StubDesc;\n", iface->name);
 284     fprintf(server, "\n");
 285 }
 286
 287
 288 static void write_stubdescriptor(type_t *iface, int expr_eval_routines)
 289 {
 290     print_server("static const MIDL_STUB_DESC %s_StubDesc =\n", iface->name);
 291     print_server("{\n");
 292     indent++;
 293     print_server("(void *)& %s___RpcServerInterface,\n", iface->name);
 294     print_server("MIDL_user_allocate,\n");
 295     print_server("MIDL_user_free,\n");
 296     print_server("{\n");
 297     indent++;
 298     print_server("0,\n");
 299     indent--;
 300     print_server("},\n");
 301     print_server("0,\n");
 302     print_server("0,\n");
 303     if (expr_eval_routines)
 304         print_server("ExprEvalRoutines,\n");
 305     else
 306         print_server("0,\n");
 307     print_server("0,\n");
 308     print_server("__MIDL_TypeFormatString.Format,\n");
 309     print_server("1, /* -error bounds_check flag */\n");
 310     print_server("0x10001, /* Ndr library version */\n");
 311     print_server("0,\n");
 312     print_server("0x50100a4, /* MIDL Version 5.1.164 */\n");
 313     print_server("0,\n");
 314     print_server("%s,\n", list_empty(&user_type_list) ? "0" : "UserMarshalRoutines");
 315     print_server("0,  /* notify & notify_flag routine table */\n");
 316     print_server("1,  /* Flags */\n");
 317     print_server("0,  /* Reserved3 */\n");
 318     print_server("0,  /* Reserved4 */\n");
 319     print_server("0   /* Reserved5 */\n");
 320     indent--;
 321     print_server("};\n");
 322     fprintf(server, "\n");
 323 }
 324
 325
 326 static void write_serverinterfacedecl(type_t *iface)
 327 {
 328     unsigned int ver = get_attrv(iface->attrs, ATTR_VERSION);
 329     UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
 330     const str_list_t *endpoints = get_attrp(iface->attrs, ATTR_ENDPOINT);
 331
 332     if (endpoints) write_endpoints( server, iface->name, endpoints );
 333
 334     print_server("static RPC_DISPATCH_TABLE %s_v%d_%d_DispatchTable;\n", iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 335     fprintf(server, "\n");
 336     print_server("static const RPC_SERVER_INTERFACE %s___RpcServerInterface =\n", iface->name );
 337     print_server("{\n");
 338     indent++;
 339     print_server("sizeof(RPC_SERVER_INTERFACE),\n");
 340     print_server("{{0x%08x,0x%04x,0x%04x,{0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x}},{%d,%d}},\n",
 341                  uuid->Data1, uuid->Data2, uuid->Data3, uuid->Data4[0], uuid->Data4[1],
 342                  uuid->Data4[2], uuid->Data4[3], uuid->Data4[4], uuid->Data4[5], uuid->Data4[6],
 343                  uuid->Data4[7], MAJORVERSION(ver), MINORVERSION(ver));
 344     print_server("{{0x8a885d04,0x1ceb,0x11c9,{0x9f,0xe8,0x08,0x00,0x2b,0x10,0x48,0x60}},{2,0}},\n"); /* FIXME */
 345     print_server("&%s_v%d_%d_DispatchTable,\n", iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 346     if (endpoints)
 347     {
 348         print_server("%u,\n", list_count(endpoints));
 349         print_server("(PRPC_PROTSEQ_ENDPOINT)%s__RpcProtseqEndpoint,\n", iface->name);
 350     }
 351     else
 352     {
 353         print_server("0,\n");
 354         print_server("0,\n");
 355     }
 356     print_server("0,\n");
 357     print_server("0,\n");
 358     print_server("0,\n");
 359     indent--;
 360     print_server("};\n");
 361     if (old_names)
 362         print_server("RPC_IF_HANDLE %s_ServerIfHandle DECLSPEC_HIDDEN = (RPC_IF_HANDLE)& %s___RpcServerInterface;\n",
 363                      iface->name, iface->name);
 364     else
 365         print_server("RPC_IF_HANDLE %s%s_v%d_%d_s_ifspec DECLSPEC_HIDDEN = (RPC_IF_HANDLE)& %s___RpcServerInterface;\n",
 366                      prefix_server, iface->name, MAJORVERSION(ver), MINORVERSION(ver), iface->name);
 367     fprintf(server, "\n");
 368 }
 369
 370
 371 static void init_server(void)
 372 {
 373     if (server)
 374         return;
 375     if (!(server = fopen(server_name, "w")))
 376         error("Could not open %s for output\n", server_name);
 377
 378     print_server("/*** Autogenerated by WIDL %s from %s - Do not edit ***/\n", PACKAGE_VERSION, input_name);
 379     print_server("#include <string.h>\n");
 380     fprintf(server, "\n");
 381     print_server("#include \"%s\"\n", header_name);
 382     print_server("\n");
 383     print_server( "#ifndef DECLSPEC_HIDDEN\n");
 384     print_server( "#define DECLSPEC_HIDDEN\n");
 385     print_server( "#endif\n");
 386     print_server( "\n");
 387     write_exceptions( server );
 388     print_server("\n");
 389     print_server("struct __server_frame\n");
 390     print_server("{\n");
 391     print_server("    __DECL_EXCEPTION_FRAME\n");
 392     print_server("    MIDL_STUB_MESSAGE _StubMsg;\n");
 393     print_server("};\n");
 394     print_server("\n");
 395     print_server("static int __server_filter( struct __server_frame *__frame )\n");
 396     print_server( "{\n");
 397     print_server( "    return (__frame->code == STATUS_ACCESS_VIOLATION) ||\n");
 398     print_server( "           (__frame->code == STATUS_DATATYPE_MISALIGNMENT) ||\n");
 399     print_server( "           (__frame->code == RPC_X_BAD_STUB_DATA) ||\n");
 400     print_server( "           (__frame->code == RPC_S_INVALID_BOUND);\n");
 401     print_server( "}\n");
 402     print_server( "\n");
 403 }
 404
 405
 406 static void write_server_stmts(const statement_list_t *stmts, int expr_eval_routines, unsigned int *proc_offset)
 407 {
 408     const statement_t *stmt;
 409     if (stmts) LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
 410     {
 411         if (stmt->type == STMT_LIBRARY)
 412             write_server_stmts(stmt->u.lib->stmts, expr_eval_routines, proc_offset);
 413         else if (stmt->type == STMT_TYPE && type_get_type(stmt->u.type) == TYPE_INTERFACE)
 414         {
 415             type_t *iface = stmt->u.type;
 416             if (!need_stub(iface))
 417                 continue;
 418
 419             fprintf(server, "/*****************************************************************************\n");
 420             fprintf(server, " * %s interface\n", iface->name);
 421             fprintf(server, " */\n");
 422             fprintf(server, "\n");
 423
 424             if (statements_has_func(type_iface_get_stmts(iface)))
 425             {
 426                 write_serverinterfacedecl(iface);
 427                 write_stubdescdecl(iface);
 428
 429                 write_function_stubs(iface, proc_offset);
 430
 431                 print_server("#if !defined(__RPC_WIN%u__)\n", pointer_size == 8 ? 64 : 32);
 432                 print_server("#error  Invalid build platform for this stub.\n");
 433                 print_server("#endif\n");
 434
 435                 fprintf(server, "\n");
 436                 write_stubdescriptor(iface, expr_eval_routines);
 437                 write_dispatchtable(iface);
 438             }
 439         }
 440     }
 441 }
 442
 443 static void write_server_routines(const statement_list_t *stmts)
 444 {
 445     unsigned int proc_offset = 0;
 446     int expr_eval_routines;
 447
 448     write_formatstringsdecl(server, indent, stmts, need_stub);
 449     expr_eval_routines = write_expr_eval_routines(server, server_token);
 450     if (expr_eval_routines)
 451         write_expr_eval_routine_list(server, server_token);
 452     write_user_quad_list(server);
 453
 454     write_server_stmts(stmts, expr_eval_routines, &proc_offset);
 455
 456     fprintf(server, "\n");
 457
 458     write_procformatstring(server, stmts, need_stub);
 459     write_typeformatstring(server, stmts, need_stub);
 460 }
 461
 462 void write_server(const statement_list_t *stmts)
 463 {
 464     if (!do_server)
 465         return;
 466     if (do_everything && !need_stub_files(stmts))
 467         return;
 468
 469     init_server();
 470     if (!server)
 471         return;
 472
 473     if (do_win32 && do_win64)
 474     {
 475         fprintf(server, "\n#ifndef _WIN64\n\n");
 476         pointer_size = 4;
 477         write_server_routines( stmts );
 478         fprintf(server, "\n#else /* _WIN64 */\n\n");
 479         pointer_size = 8;
 480         write_server_routines( stmts );
 481         fprintf(server, "\n#endif /* _WIN64 */\n");
 482     }
 483     else if (do_win32)
 484     {
 485         pointer_size = 4;
 486         write_server_routines( stmts );
 487     }
 488     else if (do_win64)
 489     {
 490         pointer_size = 8;
 491         write_server_routines( stmts );
 492     }
 493
 494     fclose(server);
 495 }