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 <assert.h>
  31 #include <ctype.h>
  32 #include <signal.h>
  33
  34 #include "widl.h"
  35 #include "utils.h"
  36 #include "parser.h"
  37 #include "header.h"
  38
  39 #include "typegen.h"
  40
  41 static FILE* server;
  42 static int indent = 0;
  43
  44
  45 static void print_server(const char *format, ...)
  46 {
  47     va_list va;
  48     va_start(va, format);
  49     print(server, indent, format, va);
  50     va_end(va);
  51 }
  52
  53 static void write_function_stubs(type_t *iface, unsigned int *proc_offset)
  54 {
  55     char *implicit_handle = get_attrp(iface->attrs, ATTR_IMPLICIT_HANDLE);
  56     int explicit_handle = is_attr(iface->attrs, ATTR_EXPLICIT_HANDLE);
  57     const func_t *func;
  58     const var_t *var;
  59     const var_t* explicit_handle_var;
  60
  61     if (!iface->funcs) return;
  62     LIST_FOR_EACH_ENTRY( func, iface->funcs, const func_t, entry )
  63     {
  64         const var_t *def = func->def;
  65
  66         /* check for a defined binding handle */
  67         explicit_handle_var = get_explicit_handle_var(func);
  68         if (explicit_handle)
  69         {
  70             if (!explicit_handle_var)
  71             {
  72                 error("%s() does not define an explicit binding handle!\n", def->name);
  73                 return;
  74             }
  75         }
  76         else if (implicit_handle)
  77         {
  78             if (explicit_handle_var)
  79             {
  80                 error("%s() must not define a binding handle!\n", def->name);
  81                 return;
  82             }
  83         }
  84
  85         fprintf(server, "void __RPC_STUB\n");
  86         fprintf(server, "%s_", iface->name);
  87         write_name(server, def);
  88         fprintf(server, "(\n");
  89         indent++;
  90         print_server("PRPC_MESSAGE _pRpcMessage)\n");
  91         indent--;
  92
  93         /* write the functions body */
  94         fprintf(server, "{\n");
  95         indent++;
  96
  97         /* Declare arguments */
  98         declare_stub_args(server, indent, func);
  99
 100         print_server("MIDL_STUB_MESSAGE _StubMsg;\n");
 101         print_server("RPC_STATUS _Status;\n");
 102         fprintf(server, "\n");
 103
 104
 105         print_server("((void)(_Status));\n");
 106         print_server("NdrServerInitializeNew(\n");
 107         indent++;
 108         print_server("_pRpcMessage,\n");
 109         print_server("&_StubMsg,\n");
 110         print_server("&%s_StubDesc);\n", iface->name);
 111         indent--;
 112         fprintf(server, "\n");
 113
 114         write_parameters_init(server, indent, func);
 115
 116         if (explicit_handle_var)
 117         {
 118             print_server("%s = _pRpcMessage->Handle;\n", explicit_handle_var->name);
 119             fprintf(server, "\n");
 120         }
 121
 122         print_server("RpcTryFinally\n");
 123         print_server("{\n");
 124         indent++;
 125         print_server("RpcTryExcept\n");
 126         print_server("{\n");
 127         indent++;
 128
 129         if (func->args)
 130         {
 131             print_server("if ((_pRpcMessage->DataRepresentation & 0x0000FFFFUL) != NDR_LOCAL_DATA_REPRESENTATION)\n");
 132             indent++;
 133             print_server("NdrConvert(\n");
 134             indent++;
 135             print_server("(PMIDL_STUB_MESSAGE)&_StubMsg,\n");
 136             print_server("(PFORMAT_STRING)&__MIDL_ProcFormatString.Format[%u]);\n", *proc_offset);
 137             indent -= 2;
 138             fprintf(server, "\n");
 139
 140             /* unmarshall arguments */
 141             write_remoting_arguments(server, indent, func, PASS_IN, PHASE_UNMARSHAL);
 142         }
 143
 144         print_server("if (_StubMsg.Buffer > _StubMsg.BufferEnd)\n");
 145         print_server("{\n");
 146         indent++;
 147         print_server("RpcRaiseException(RPC_X_BAD_STUB_DATA);\n");
 148         indent--;
 149         print_server("}\n");
 150         indent--;
 151         print_server("}\n");
 152         print_server("RpcExcept(RPC_BAD_STUB_DATA_EXCEPTION_FILTER)\n");
 153         print_server("{\n");
 154         indent++;
 155         print_server("RpcRaiseException(RPC_X_BAD_STUB_DATA);\n");
 156         indent--;
 157         print_server("}\n");
 158         print_server("RpcEndExcept\n");
 159         fprintf(server, "\n");
 160
 161         /* Assign 'out' arguments */
 162         assign_stub_out_args(server, indent, func);
 163
 164         /* Call the real server function */
 165         if (!is_void(def->type))
 166             print_server("_RetVal = ");
 167         else
 168             print_server("");
 169         write_prefix_name(server, prefix_server, def);
 170
 171         if (func->args)
 172         {
 173             int first_arg = 1;
 174
 175             fprintf(server, "(\n");
 176             indent++;
 177             LIST_FOR_EACH_ENTRY( var, func->args, const var_t, entry )
 178             {
 179                 if (first_arg)
 180                     first_arg = 0;
 181                 else
 182                     fprintf(server, ",\n");
 183                 if (is_context_handle(var->type))
 184                 {
 185                     print_server("(");
 186                     write_type_decl_left(server, var->type);
 187                     fprintf(server, ")%sNDRSContextValue(%s)", is_ptr(var->type) ? "" : "*", var->name);
 188                 }
 189                 else
 190                 {
 191                     print_server("");
 192                     if (var->type->declarray)
 193                         fprintf(server, "*");
 194                     write_name(server, var);
 195                 }
 196             }
 197             fprintf(server, ");\n");
 198             indent--;
 199         }
 200         else
 201         {
 202             fprintf(server, "();\n");
 203         }
 204
 205         if (has_out_arg_or_return(func))
 206         {
 207             write_remoting_arguments(server, indent, func, PASS_OUT, PHASE_BUFFERSIZE);
 208
 209             if (!is_void(def->type))
 210                 write_remoting_arguments(server, indent, func, PASS_RETURN, PHASE_BUFFERSIZE);
 211
 212             print_server("_pRpcMessage->BufferLength = _StubMsg.BufferLength;\n");
 213             fprintf(server, "\n");
 214             print_server("_Status = I_RpcGetBuffer(_pRpcMessage);\n");
 215             print_server("if (_Status)\n");
 216             indent++;
 217             print_server("RpcRaiseException(_Status);\n");
 218             indent--;
 219             fprintf(server, "\n");
 220             print_server("_StubMsg.Buffer = (unsigned char *)_pRpcMessage->Buffer;\n");
 221             fprintf(server, "\n");
 222         }
 223
 224         /* marshall arguments */
 225         write_remoting_arguments(server, indent, func, PASS_OUT, PHASE_MARSHAL);
 226
 227         /* marshall the return value */
 228         if (!is_void(def->type))
 229             write_remoting_arguments(server, indent, func, PASS_RETURN, PHASE_MARSHAL);
 230
 231         indent--;
 232         print_server("}\n");
 233         print_server("RpcFinally\n");
 234         print_server("{\n");
 235         indent++;
 236
 237         write_remoting_arguments(server, indent, func, PASS_OUT, PHASE_FREE);
 238
 239         if (!is_void(def->type))
 240             write_remoting_arguments(server, indent, func, PASS_RETURN, PHASE_FREE);
 241
 242         indent--;
 243         print_server("}\n");
 244         print_server("RpcEndFinally\n");
 245
 246         /* calculate buffer length */
 247         fprintf(server, "\n");
 248         print_server("_pRpcMessage->BufferLength =\n");
 249         indent++;
 250         print_server("(unsigned int)(_StubMsg.Buffer - (unsigned char *)_pRpcMessage->Buffer);\n");
 251         indent--;
 252         indent--;
 253         fprintf(server, "}\n");
 254         fprintf(server, "\n");
 255
 256         /* update proc_offset */
 257         *proc_offset += get_size_procformatstring_func( func );
 258     }
 259 }
 260
 261
 262 static void write_dispatchtable(type_t *iface)
 263 {
 264     unsigned long ver = get_attrv(iface->attrs, ATTR_VERSION);
 265     unsigned long method_count = 0;
 266     const func_t *func;
 267
 268     print_server("static RPC_DISPATCH_FUNCTION %s_table[] =\n", iface->name);
 269     print_server("{\n");
 270     indent++;
 271
 272     if (iface->funcs) LIST_FOR_EACH_ENTRY( func, iface->funcs, const func_t, entry )
 273     {
 274         var_t *def = func->def;
 275
 276         print_server("%s_", iface->name);
 277         write_name(server, def);
 278         fprintf(server, ",\n");
 279
 280         method_count++;
 281     }
 282     print_server("0\n");
 283     indent--;
 284     print_server("};\n");
 285     print_server("RPC_DISPATCH_TABLE %s_v%d_%d_DispatchTable =\n", iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 286     print_server("{\n");
 287     indent++;
 288     print_server("%u,\n", method_count);
 289     print_server("%s_table\n", iface->name);
 290     indent--;
 291     print_server("};\n");
 292     fprintf(server, "\n");
 293 }
 294
 295
 296 static void write_stubdescdecl(type_t *iface)
 297 {
 298     print_server("static const MIDL_STUB_DESC %s_StubDesc;\n", iface->name);
 299     fprintf(server, "\n");
 300 }
 301
 302
 303 static void write_stubdescriptor(type_t *iface, int expr_eval_routines)
 304 {
 305     print_server("static const MIDL_STUB_DESC %s_StubDesc =\n", iface->name);
 306     print_server("{\n");
 307     indent++;
 308     print_server("(void *)& %s___RpcServerInterface,\n", iface->name);
 309     print_server("MIDL_user_allocate,\n");
 310     print_server("MIDL_user_free,\n");
 311     print_server("{\n");
 312     indent++;
 313     print_server("0,\n");
 314     indent--;
 315     print_server("},\n");
 316     print_server("0,\n");
 317     print_server("0,\n");
 318     if (expr_eval_routines)
 319         print_server("ExprEvalRoutines,\n");
 320     else
 321         print_server("0,\n");
 322     print_server("0,\n");
 323     print_server("__MIDL_TypeFormatString.Format,\n");
 324     print_server("1, /* -error bounds_check flag */\n");
 325     print_server("0x10001, /* Ndr library version */\n");
 326     print_server("0,\n");
 327     print_server("0x50100a4, /* MIDL Version 5.1.164 */\n");
 328     print_server("0,\n");
 329     print_server("%s,\n", list_empty(&user_type_list) ? "0" : "UserMarshalRoutines");
 330     print_server("0,  /* notify & notify_flag routine table */\n");
 331     print_server("1,  /* Flags */\n");
 332     print_server("0,  /* Reserved3 */\n");
 333     print_server("0,  /* Reserved4 */\n");
 334     print_server("0   /* Reserved5 */\n");
 335     indent--;
 336     print_server("};\n");
 337     fprintf(server, "\n");
 338 }
 339
 340
 341 static void write_serverinterfacedecl(type_t *iface)
 342 {
 343     unsigned long ver = get_attrv(iface->attrs, ATTR_VERSION);
 344     UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
 345     const str_list_t *endpoints = get_attrp(iface->attrs, ATTR_ENDPOINT);
 346
 347     if (endpoints) write_endpoints( server, iface->name, endpoints );
 348
 349     print_server("extern RPC_DISPATCH_TABLE %s_v%d_%d_DispatchTable;\n", iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 350     fprintf(server, "\n");
 351     print_server("static const RPC_SERVER_INTERFACE %s___RpcServerInterface =\n", iface->name );
 352     print_server("{\n");
 353     indent++;
 354     print_server("sizeof(RPC_SERVER_INTERFACE),\n");
 355     print_server("{{0x%08lx,0x%04x,0x%04x,{0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,0x%02x}},{%d,%d}},\n",
 356                  uuid->Data1, uuid->Data2, uuid->Data3, uuid->Data4[0], uuid->Data4[1],
 357                  uuid->Data4[2], uuid->Data4[3], uuid->Data4[4], uuid->Data4[5], uuid->Data4[6],
 358                  uuid->Data4[7], MAJORVERSION(ver), MINORVERSION(ver));
 359     print_server("{{0x8a885d04,0x1ceb,0x11c9,{0x9f,0xe8,0x08,0x00,0x2b,0x10,0x48,0x60}},{2,0}},\n"); /* FIXME */
 360     print_server("&%s_v%d_%d_DispatchTable,\n", iface->name, MAJORVERSION(ver), MINORVERSION(ver));
 361     if (endpoints)
 362     {
 363         print_server("%u,\n", list_count(endpoints));
 364         print_server("(PRPC_PROTSEQ_ENDPOINT)%s__RpcProtseqEndpoint,\n", iface->name);
 365     }
 366     else
 367     {
 368         print_server("0,\n");
 369         print_server("0,\n");
 370     }
 371     print_server("0,\n");
 372     print_server("0,\n");
 373     print_server("0,\n");
 374     indent--;
 375     print_server("};\n");
 376     if (old_names)
 377         print_server("RPC_IF_HANDLE %s_ServerIfHandle = (RPC_IF_HANDLE)& %s___RpcServerInterface;\n",
 378                      iface->name, iface->name);
 379     else
 380         print_server("RPC_IF_HANDLE %s%s_v%d_%d_s_ifspec = (RPC_IF_HANDLE)& %s___RpcServerInterface;\n",
 381                      prefix_server, iface->name, MAJORVERSION(ver), MINORVERSION(ver), iface->name);
 382     fprintf(server, "\n");
 383 }
 384
 385
 386 static void init_server(void)
 387 {
 388     if (server)
 389         return;
 390     if (!(server = fopen(server_name, "w")))
 391         error("Could not open %s for output\n", server_name);
 392
 393     print_server("/*** Autogenerated by WIDL %s from %s - Do not edit ***/\n", PACKAGE_VERSION, input_name);
 394     print_server("#include <string.h>\n");
 395     fprintf(server, "\n");
 396     print_server("#include \"%s\"\n", header_name);
 397     fprintf(server, "\n");
 398 }
 399
 400
 401 void write_server(ifref_list_t *ifaces)
 402 {
 403     unsigned int proc_offset = 0;
 404     int expr_eval_routines;
 405     ifref_t *iface;
 406
 407     if (!do_server)
 408         return;
 409     if (do_everything && !need_stub_files(ifaces))
 410         return;
 411
 412     init_server();
 413     if (!server)
 414         return;
 415
 416     write_formatstringsdecl(server, indent, ifaces, need_stub);
 417     expr_eval_routines = write_expr_eval_routines(server, server_token);
 418     if (expr_eval_routines)
 419         write_expr_eval_routine_list(server, server_token);
 420     write_user_quad_list(server);
 421
 422     if (ifaces) LIST_FOR_EACH_ENTRY( iface, ifaces, ifref_t, entry )
 423     {
 424         if (!need_stub(iface->iface))
 425             continue;
 426
 427         fprintf(server, "/*****************************************************************************\n");
 428         fprintf(server, " * %s interface\n", iface->iface->name);
 429         fprintf(server, " */\n");
 430         fprintf(server, "\n");
 431
 432         if (iface->iface->funcs)
 433         {
 434             write_serverinterfacedecl(iface->iface);
 435             write_stubdescdecl(iface->iface);
 436
 437             write_function_stubs(iface->iface, &proc_offset);
 438
 439             print_server("#if !defined(__RPC_WIN32__)\n");
 440             print_server("#error  Invalid build platform for this stub.\n");
 441             print_server("#endif\n");
 442
 443             fprintf(server, "\n");
 444             write_stubdescriptor(iface->iface, expr_eval_routines);
 445             write_dispatchtable(iface->iface);
 446         }
 447     }
 448
 449     fprintf(server, "\n");
 450
 451     write_procformatstring(server, ifaces, need_stub);
 452     write_typeformatstring(server, ifaces, need_stub);
 453
 454     fclose(server);
 455 }