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winhttp: The last parameter of WinHttpWriteData is optional.
[wine/multimedia.git] / tools / widl / client.c
blobb2f971c627174cd1b85ba5f1fc84f6517e96e7b7
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 "widltypes.h"
38 #include "typegen.h"
39 #include "expr.h"
40
41 static FILE* client;
42 static int indent = 0;
43
44 static void print_client( const char *format, ... )
45 {
46 va_list va;
47 va_start(va, format);
48 print(client, indent, format, va);
49 va_end(va);
50 }
51
52
53 static void check_pointers(const func_t *func)
54 {
55 const var_t *var;
56
57 if (!func->args)
58 return;
59
60 LIST_FOR_EACH_ENTRY( var, func->args, const var_t, entry )
61 {
62 if (is_var_ptr(var) && cant_be_null(var))
63 {
64 print_client("if (!%s)\n", var->name);
65 print_client("{\n");
66 indent++;
67 print_client("RpcRaiseException(RPC_X_NULL_REF_POINTER);\n");
68 indent--;
69 print_client("}\n\n");
70 }
71 }
72 }
73
74 static void write_function_stubs(type_t *iface, unsigned int *proc_offset)
75 {
76 const func_t *func;
77 const char *implicit_handle = get_attrp(iface->attrs, ATTR_IMPLICIT_HANDLE);
78 const var_t *var;
79 int method_count = 0;
80
81 if (!implicit_handle)
82 print_client("static RPC_BINDING_HANDLE %s__MIDL_AutoBindHandle;\n\n", iface->name);
83
84 if (iface->funcs) LIST_FOR_EACH_ENTRY( func, iface->funcs, const func_t, entry )
85 {
86 const var_t *def = func->def;
87 const var_t* explicit_handle_var;
88 const var_t* explicit_generic_handle_var = NULL;
89 const var_t* context_handle_var = NULL;
90 int has_full_pointer = is_full_pointer_function(func);
91 const char *callconv = get_attrp(def->type->attrs, ATTR_CALLCONV);
92
93 /* check for a defined binding handle */
94 explicit_handle_var = get_explicit_handle_var(func);
95 if (!explicit_handle_var)
96 {
97 explicit_generic_handle_var = get_explicit_generic_handle_var(func);
98 if (!explicit_generic_handle_var)
99 context_handle_var = get_context_handle_var(func);
100 }
101
102 write_type_decl_left(client, get_func_return_type(func));
103 if (needs_space_after(get_func_return_type(func)))
104 fprintf(client, " ");
105 if (callconv) fprintf(client, "%s ", callconv);
106 fprintf(client, "%s%s(\n", prefix_client, get_name(def));
107 indent++;
108 if (func->args)
109 write_args(client, func->args, iface->name, 0, TRUE);
110 else
111 print_client("void");
112 fprintf(client, ")\n");
113 indent--;
114
115 /* write the functions body */
116 fprintf(client, "{\n");
117 indent++;
118
119 /* declare return value '_RetVal' */
120 if (!is_void(get_func_return_type(func)))
121 {
122 print_client("");
123 write_type_decl_left(client, get_func_return_type(func));
124 fprintf(client, " _RetVal;\n");
125 }
126
127 if (implicit_handle || explicit_handle_var || explicit_generic_handle_var || context_handle_var)
128 print_client("RPC_BINDING_HANDLE _Handle = 0;\n");
129
130 print_client("RPC_MESSAGE _RpcMessage;\n");
131 print_client("MIDL_STUB_MESSAGE _StubMsg;\n");
132 if (!is_void(get_func_return_type(func)) && decl_indirect(get_func_return_type(func)))
133 {
134 print_client("void *_p_%s = &%s;\n",
135 "_RetVal", "_RetVal");
136 }
137 fprintf(client, "\n");
138
139 if (has_full_pointer)
140 write_full_pointer_init(client, indent, func, FALSE);
141
142 /* check pointers */
143 check_pointers(func);
144
145 print_client("RpcTryFinally\n");
146 print_client("{\n");
147 indent++;
148
149 print_client("NdrClientInitializeNew(\n");
150 indent++;
151 print_client("(PRPC_MESSAGE)&_RpcMessage,\n");
152 print_client("(PMIDL_STUB_MESSAGE)&_StubMsg,\n");
153 print_client("(PMIDL_STUB_DESC)&%s_StubDesc,\n", iface->name);
154 print_client("%d);\n", method_count);
155 indent--;
156 fprintf(client, "\n");
157
158 if (is_attr(def->attrs, ATTR_IDEMPOTENT) || is_attr(def->attrs, ATTR_BROADCAST))
159 {
160 print_client("_RpcMessage.RpcFlags = ( RPC_NCA_FLAGS_DEFAULT ");
161 if (is_attr(def->attrs, ATTR_IDEMPOTENT))
162 fprintf(client, "| RPC_NCA_FLAGS_IDEMPOTENT ");
163 if (is_attr(def->attrs, ATTR_BROADCAST))
164 fprintf(client, "| RPC_NCA_FLAGS_BROADCAST ");
165 fprintf(client, ");\n\n");
166 }
167
168 if (explicit_handle_var)
169 {
170 print_client("_Handle = %s;\n", explicit_handle_var->name);
171 fprintf(client, "\n");
172 }
173 else if (explicit_generic_handle_var)
174 {
175 print_client("_Handle = %s_bind(%s);\n",
176 get_explicit_generic_handle_type(explicit_generic_handle_var)->name,
177 explicit_generic_handle_var->name);
178 fprintf(client, "\n");
179 }
180 else if (context_handle_var)
181 {
182 /* if the context_handle attribute appears in the chain of types
183 * without pointers being followed, then the context handle must
184 * be direct, otherwise it is a pointer */
185 int is_ch_ptr = is_aliaschain_attr(context_handle_var->type, ATTR_CONTEXTHANDLE) ? FALSE : TRUE;
186 print_client("if (%s%s != 0)\n", is_ch_ptr ? "*" : "", context_handle_var->name);
187 indent++;
188 print_client("_Handle = NDRCContextBinding(%s%s);\n", is_ch_ptr ? "*" : "", context_handle_var->name);
189 indent--;
190 if (is_attr(context_handle_var->attrs, ATTR_IN) &&
191 !is_attr(context_handle_var->attrs, ATTR_OUT))
192 {
193 print_client("else\n");
194 indent++;
195 print_client("RpcRaiseException(RPC_X_SS_IN_NULL_CONTEXT);\n");
196 indent--;
197 }
198 fprintf(client, "\n");
199 }
200 else if (implicit_handle)
201 {
202 print_client("_Handle = %s;\n", implicit_handle);
203 fprintf(client, "\n");
204 }
205
206 write_remoting_arguments(client, indent, func, PASS_IN, PHASE_BUFFERSIZE);
207
208 print_client("NdrGetBuffer(\n");
209 indent++;
210 print_client("(PMIDL_STUB_MESSAGE)&_StubMsg,\n");
211 print_client("_StubMsg.BufferLength,\n");
212 if (implicit_handle || explicit_handle_var || explicit_generic_handle_var || context_handle_var)
213 print_client("_Handle);\n");
214 else
215 print_client("%s__MIDL_AutoBindHandle);\n", iface->name);
216 indent--;
217 fprintf(client, "\n");
218
219 /* marshal arguments */
220 write_remoting_arguments(client, indent, func, PASS_IN, PHASE_MARSHAL);
221
222 /* send/receive message */
223 /* print_client("NdrNsSendReceive(\n"); */
224 /* print_client("(unsigned char *)_StubMsg.Buffer,\n"); */
225 /* print_client("(RPC_BINDING_HANDLE *) &%s__MIDL_AutoBindHandle);\n", iface->name); */
226 print_client("NdrSendReceive(\n");
227 indent++;
228 print_client("(PMIDL_STUB_MESSAGE)&_StubMsg,\n");
229 print_client("(unsigned char *)_StubMsg.Buffer);\n\n");
230 indent--;
231
232 print_client("_StubMsg.BufferStart = (unsigned char *)_RpcMessage.Buffer;\n");
233 print_client("_StubMsg.BufferEnd = _StubMsg.BufferStart + _RpcMessage.BufferLength;\n");
234
235 if (has_out_arg_or_return(func))
236 {
237 fprintf(client, "\n");
238
239 print_client("if ((_RpcMessage.DataRepresentation & 0x0000FFFFUL) != NDR_LOCAL_DATA_REPRESENTATION)\n");
240 indent++;
241 print_client("NdrConvert(\n");
242 indent++;
243 print_client("(PMIDL_STUB_MESSAGE)&_StubMsg,\n");
244 print_client("(PFORMAT_STRING)&__MIDL_ProcFormatString.Format[%u]);\n", *proc_offset);
245 indent -= 2;
246 }
247
248 /* unmarshall arguments */
249 fprintf(client, "\n");
250 write_remoting_arguments(client, indent, func, PASS_OUT, PHASE_UNMARSHAL);
251
252 /* unmarshal return value */
253 if (!is_void(get_func_return_type(func)))
254 {
255 if (decl_indirect(get_func_return_type(func)))
256 print_client("MIDL_memset(&%s, 0, sizeof(%s));\n", "_RetVal", "_RetVal");
257 else if (is_ptr(get_func_return_type(func)) || is_array(get_func_return_type(func)))
258 print_client("%s = 0;\n", "_RetVal");
259 write_remoting_arguments(client, indent, func, PASS_RETURN, PHASE_UNMARSHAL);
260 }
261
262 /* update proc_offset */
263 if (func->args)
264 {
265 LIST_FOR_EACH_ENTRY( var, func->args, const var_t, entry )
266 *proc_offset += get_size_procformatstring_type(var->name, var->type, var->attrs);
267 }
268 if (!is_void(get_func_return_type(func)))
269 *proc_offset += get_size_procformatstring_type("return value", get_func_return_type(func), NULL);
270 else
271 *proc_offset += 2; /* FC_END and FC_PAD */
272
273 indent--;
274 print_client("}\n");
275 print_client("RpcFinally\n");
276 print_client("{\n");
277 indent++;
278
279
280 /* FIXME: emit client finally code */
281
282 if (has_full_pointer)
283 write_full_pointer_free(client, indent, func);
284
285 print_client("NdrFreeBuffer((PMIDL_STUB_MESSAGE)&_StubMsg);\n");
286
287 if (!implicit_handle && explicit_generic_handle_var)
288 {
289 fprintf(client, "\n");
290 print_client("if (_Handle)\n");
291 indent++;
292 print_client("%s_unbind(%s, _Handle);\n",
293 get_explicit_generic_handle_type(explicit_generic_handle_var)->name,
294 explicit_generic_handle_var->name);
295 indent--;
296 }
297
298 indent--;
299 print_client("}\n");
300 print_client("RpcEndFinally\n");
301
302
303 /* emit return code */
304 if (!is_void(get_func_return_type(func)))
305 {
306 fprintf(client, "\n");
307 print_client("return _RetVal;\n");
308 }
309
310 indent--;
311 fprintf(client, "}\n");
312 fprintf(client, "\n");
313
314 method_count++;
315 }
316 }
317
318
319 static void write_stubdescdecl(type_t *iface)
320 {
321 print_client("static const MIDL_STUB_DESC %s_StubDesc;\n", iface->name);
322 fprintf(client, "\n");
323 }
324
325
326 static void write_stubdescriptor(type_t *iface, int expr_eval_routines)
327 {
328 const char *implicit_handle = get_attrp(iface->attrs, ATTR_IMPLICIT_HANDLE);
329
330 print_client("static const MIDL_STUB_DESC %s_StubDesc =\n", iface->name);
331 print_client("{\n");
332 indent++;
333 print_client("(void *)& %s___RpcClientInterface,\n", iface->name);
334 print_client("MIDL_user_allocate,\n");
335 print_client("MIDL_user_free,\n");
336 print_client("{\n");
337 indent++;
338 if (implicit_handle)
339 print_client("&%s,\n", implicit_handle);
340 else
341 print_client("&%s__MIDL_AutoBindHandle,\n", iface->name);
342 indent--;
343 print_client("},\n");
344 print_client("0,\n");
345 print_client("0,\n");
346 if (expr_eval_routines)
347 print_client("ExprEvalRoutines,\n");
348 else
349 print_client("0,\n");
350 print_client("0,\n");
351 print_client("__MIDL_TypeFormatString.Format,\n");
352 print_client("1, /* -error bounds_check flag */\n");
353 print_client("0x10001, /* Ndr library version */\n");
354 print_client("0,\n");
355 print_client("0x50100a4, /* MIDL Version 5.1.164 */\n");
356 print_client("0,\n");
357 print_client("%s,\n", list_empty(&user_type_list) ? "0" : "UserMarshalRoutines");
358 print_client("0, /* notify & notify_flag routine table */\n");
359 print_client("1, /* Flags */\n");
360 print_client("0, /* Reserved3 */\n");
361 print_client("0, /* Reserved4 */\n");
362 print_client("0 /* Reserved5 */\n");
363 indent--;
364 print_client("};\n");
365 fprintf(client, "\n");
366 }
367
368
369 static void write_clientinterfacedecl(type_t *iface)
370 {
371 unsigned long ver = get_attrv(iface->attrs, ATTR_VERSION);
372 const UUID *uuid = get_attrp(iface->attrs, ATTR_UUID);
373 const str_list_t *endpoints = get_attrp(iface->attrs, ATTR_ENDPOINT);
374
375 if (endpoints) write_endpoints( client, iface->name, endpoints );
376
377 print_client("static const RPC_CLIENT_INTERFACE %s___RpcClientInterface =\n", iface->name );
378 print_client("{\n");
379 indent++;
380 print_client("sizeof(RPC_CLIENT_INTERFACE),\n");
381 print_client("{{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",
382 uuid->Data1, uuid->Data2, uuid->Data3, uuid->Data4[0], uuid->Data4[1],
383 uuid->Data4[2], uuid->Data4[3], uuid->Data4[4], uuid->Data4[5], uuid->Data4[6],
384 uuid->Data4[7], MAJORVERSION(ver), MINORVERSION(ver));
385 print_client("{{0x8a885d04,0x1ceb,0x11c9,{0x9f,0xe8,0x08,0x00,0x2b,0x10,0x48,0x60}},{2,0}},\n"); /* FIXME */
386 print_client("0,\n");
387 if (endpoints)
388 {
389 print_client("%u,\n", list_count(endpoints));
390 print_client("(PRPC_PROTSEQ_ENDPOINT)%s__RpcProtseqEndpoint,\n", iface->name);
391 }
392 else
393 {
394 print_client("0,\n");
395 print_client("0,\n");
396 }
397 print_client("0,\n");
398 print_client("0,\n");
399 print_client("0,\n");
400 indent--;
401 print_client("};\n");
402 if (old_names)
403 print_client("RPC_IF_HANDLE %s_ClientIfHandle = (RPC_IF_HANDLE)& %s___RpcClientInterface;\n",
404 iface->name, iface->name);
405 else
406 print_client("RPC_IF_HANDLE %s%s_v%d_%d_c_ifspec = (RPC_IF_HANDLE)& %s___RpcClientInterface;\n",
407 prefix_client, iface->name, MAJORVERSION(ver), MINORVERSION(ver), iface->name);
408 fprintf(client, "\n");
409 }
410
411
412 static void write_implicithandledecl(type_t *iface)
413 {
414 const char *implicit_handle = get_attrp(iface->attrs, ATTR_IMPLICIT_HANDLE);
415
416 if (implicit_handle)
417 {
418 fprintf(client, "handle_t %s;\n", implicit_handle);
419 fprintf(client, "\n");
420 }
421 }
422
423
424 static void init_client(void)
425 {
426 if (client) return;
427 if (!(client = fopen(client_name, "w")))
428 error("Could not open %s for output\n", client_name);
429
430 print_client("/*** Autogenerated by WIDL %s from %s - Do not edit ***/\n", PACKAGE_VERSION, input_name);
431 print_client("#include <string.h>\n");
432 print_client("#ifdef _ALPHA_\n");
433 print_client("#include <stdarg.h>\n");
434 print_client("#endif\n");
435 fprintf(client, "\n");
436 print_client("#include \"%s\"\n", header_name);
437 fprintf(client, "\n");
438 }
439
440
441 static void write_client_ifaces(const statement_list_t *stmts, int expr_eval_routines, unsigned int *proc_offset)
442 {
443 const statement_t *stmt;
444 if (stmts) LIST_FOR_EACH_ENTRY( stmt, stmts, const statement_t, entry )
445 {
446 if (stmt->type == STMT_TYPE && stmt->u.type->type == RPC_FC_IP)
447 {
448 type_t *iface = stmt->u.type;
449 if (!need_stub(iface))
450 return;
451
452 fprintf(client, "/*****************************************************************************\n");
453 fprintf(client, " * %s interface\n", iface->name);
454 fprintf(client, " */\n");
455 fprintf(client, "\n");
456
457 if (iface->funcs)
458 {
459 write_implicithandledecl(iface);
460
461 write_clientinterfacedecl(iface);
462 write_stubdescdecl(iface);
463 write_function_stubs(iface, proc_offset);
464
465 print_client("#if !defined(__RPC_WIN32__)\n");
466 print_client("#error Invalid build platform for this stub.\n");
467 print_client("#endif\n");
468
469 fprintf(client, "\n");
470 write_stubdescriptor(iface, expr_eval_routines);
471 }
472 }
473 else if (stmt->type == STMT_LIBRARY)
474 write_client_ifaces(stmt->u.lib->stmts, expr_eval_routines, proc_offset);
475 }
476 }
477
478 void write_client(const statement_list_t *stmts)
479 {
480 unsigned int proc_offset = 0;
481 int expr_eval_routines;
482
483 if (!do_client)
484 return;
485 if (do_everything && !need_stub_files(stmts))
486 return;
487
488 init_client();
489 if (!client)
490 return;
491
492 write_formatstringsdecl(client, indent, stmts, need_stub);
493 expr_eval_routines = write_expr_eval_routines(client, client_token);
494 if (expr_eval_routines)
495 write_expr_eval_routine_list(client, client_token);
496 write_user_quad_list(client);
497
498 write_client_ifaces(stmts, expr_eval_routines, &proc_offset);
499
500 fprintf(client, "\n");
501
502 write_procformatstring(client, stmts, need_stub);
503 write_typeformatstring(client, stmts, need_stub);
504
505 fclose(client);
506 }
Maarten's multimedia branch