tools/widl/typelib.c

   1 /*
   2  * IDL Compiler
   3  *
   4  * Copyright 2004 Ove Kaaven
   5  * Copyright 2006 Jacek Caban for CodeWeavers
   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 #include "wine/wpp.h"
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <stdarg.h>
  29 #ifdef HAVE_UNISTD_H
  30 # include <unistd.h>
  31 #endif
  32 #include <string.h>
  33 #include <ctype.h>
  34
  35 #define NONAMELESSUNION
  36 #define NONAMELESSSTRUCT
  37
  38 #include "windef.h"
  39 #include "winbase.h"
  40
  41 #include "widl.h"
  42 #include "utils.h"
  43 #include "parser.h"
  44 #include "header.h"
  45 #include "typelib.h"
  46 #include "widltypes.h"
  47 #include "typelib_struct.h"
  48 #include "typetree.h"
  49
  50 static typelib_t *typelib;
  51
  52 int is_ptr(const type_t *t)
  53 {
  54     return type_get_type(t) == TYPE_POINTER;
  55 }
  56
  57 int is_array(const type_t *t)
  58 {
  59     return type_get_type(t) == TYPE_ARRAY;
  60 }
  61
  62 /* List of oleauto types that should be recognized by name.
  63  * (most of) these seem to be intrinsic types in mktyplib.
  64  * This table MUST be alphabetically sorted on the kw field.
  65  */
  66 static const struct oatype {
  67   const char *kw;
  68   unsigned short vt;
  69 } oatypes[] = {
  70   {"BSTR",          VT_BSTR},
  71   {"CURRENCY",      VT_CY},
  72   {"DATE",          VT_DATE},
  73   {"DECIMAL",       VT_DECIMAL},
  74   {"HRESULT",       VT_HRESULT},
  75   {"LPSTR",         VT_LPSTR},
  76   {"LPWSTR",        VT_LPWSTR},
  77   {"SCODE",         VT_ERROR},
  78   {"VARIANT",       VT_VARIANT},
  79   {"VARIANT_BOOL",  VT_BOOL}
  80 };
  81 #define NTYPES (sizeof(oatypes)/sizeof(oatypes[0]))
  82 #define KWP(p) ((const struct oatype *)(p))
  83
  84 static int kw_cmp_func(const void *s1, const void *s2)
  85 {
  86         return strcmp(KWP(s1)->kw, KWP(s2)->kw);
  87 }
  88
  89 static unsigned short builtin_vt(const type_t *t)
  90 {
  91   const char *kw = t->name;
  92   struct oatype key;
  93   const struct oatype *kwp;
  94   key.kw = kw;
  95 #ifdef KW_BSEARCH
  96   kwp = bsearch(&key, oatypes, NTYPES, sizeof(oatypes[0]), kw_cmp_func);
  97 #else
  98   {
  99     unsigned int i;
 100     for (kwp=NULL, i=0; i < NTYPES; i++)
 101       if (!kw_cmp_func(&key, &oatypes[i])) {
 102         kwp = &oatypes[i];
 103         break;
 104       }
 105   }
 106 #endif
 107   if (kwp) {
 108     return kwp->vt;
 109   }
 110   if (is_string_type (t->attrs, t))
 111   {
 112     const type_t *elem_type;
 113     if (is_array(t))
 114       elem_type = type_array_get_element(t);
 115     else
 116       elem_type = type_pointer_get_ref(t);
 117     if (type_get_type(elem_type) == TYPE_BASIC)
 118     {
 119       switch (type_basic_get_type(elem_type))
 120       {
 121       case TYPE_BASIC_CHAR: return VT_LPSTR;
 122       case TYPE_BASIC_WCHAR: return VT_LPWSTR;
 123       default: break;
 124       }
 125     }
 126   }
 127   return 0;
 128 }
 129
 130 static int match(const char*n, const char*m)
 131 {
 132   if (!n) return 0;
 133   return !strcmp(n, m);
 134 }
 135
 136 unsigned short get_type_vt(type_t *t)
 137 {
 138   unsigned short vt;
 139
 140   chat("get_type_vt: %p type->name %s\n", t, t->name);
 141   if (t->name) {
 142     vt = builtin_vt(t);
 143     if (vt) return vt;
 144   }
 145
 146   if (type_is_alias(t) && is_attr(t->attrs, ATTR_PUBLIC))
 147     return VT_USERDEFINED;
 148
 149   switch (type_get_type(t)) {
 150   case TYPE_BASIC:
 151     switch (type_basic_get_type(t)) {
 152     case TYPE_BASIC_BYTE:
 153       return VT_UI1;
 154     case TYPE_BASIC_CHAR:
 155     case TYPE_BASIC_INT8:
 156       if (type_basic_get_sign(t) > 0)
 157         return VT_UI1;
 158       else
 159         return VT_I1;
 160     case TYPE_BASIC_WCHAR:
 161       return VT_I2; /* mktyplib seems to parse wchar_t as short */
 162     case TYPE_BASIC_INT16:
 163       if (type_basic_get_sign(t) > 0)
 164         return VT_UI2;
 165       else
 166         return VT_I2;
 167     case TYPE_BASIC_INT:
 168       if (type_basic_get_sign(t) > 0)
 169         return VT_UINT;
 170       else
 171         return VT_INT;
 172     case TYPE_BASIC_INT32:
 173     case TYPE_BASIC_ERROR_STATUS_T:
 174       if (type_basic_get_sign(t) > 0)
 175         return VT_UI4;
 176       else
 177         return VT_I4;
 178     case TYPE_BASIC_INT64:
 179     case TYPE_BASIC_HYPER:
 180       if (type_basic_get_sign(t) > 0)
 181         return VT_UI8;
 182       else
 183         return VT_I8;
 184     case TYPE_BASIC_INT3264:
 185       if (typelib_kind == SYS_WIN64)
 186       {
 187         if (type_basic_get_sign(t) > 0)
 188           return VT_UI8;
 189         else
 190           return VT_I8;
 191       }
 192       else
 193       {
 194         if (type_basic_get_sign(t) > 0)
 195           return VT_UI4;
 196         else
 197           return VT_I4;
 198       }
 199     case TYPE_BASIC_FLOAT:
 200       return VT_R4;
 201     case TYPE_BASIC_DOUBLE:
 202       return VT_R8;
 203     case TYPE_BASIC_HANDLE:
 204       error("handles can't be used in typelibs\n");
 205     }
 206     break;
 207
 208   case TYPE_POINTER:
 209     return VT_PTR;
 210
 211   case TYPE_ARRAY:
 212     if (type_array_is_decl_as_ptr(t))
 213     {
 214       if (match(type_array_get_element(t)->name, "SAFEARRAY"))
 215         return VT_SAFEARRAY;
 216     }
 217     else
 218       error("get_type_vt: array types not supported\n");
 219     return VT_PTR;
 220
 221   case TYPE_INTERFACE:
 222     if(match(t->name, "IUnknown"))
 223       return VT_UNKNOWN;
 224     if(match(t->name, "IDispatch"))
 225       return VT_DISPATCH;
 226     return VT_USERDEFINED;
 227
 228   case TYPE_ENUM:
 229   case TYPE_STRUCT:
 230   case TYPE_COCLASS:
 231   case TYPE_MODULE:
 232   case TYPE_UNION:
 233   case TYPE_ENCAPSULATED_UNION:
 234     return VT_USERDEFINED;
 235
 236   case TYPE_VOID:
 237     return VT_VOID;
 238
 239   case TYPE_ALIAS:
 240     /* aliases should be filtered out by the type_get_type call above */
 241     assert(0);
 242     break;
 243
 244   case TYPE_FUNCTION:
 245     error("get_type_vt: functions not supported\n");
 246     break;
 247
 248   case TYPE_BITFIELD:
 249     error("get_type_vt: bitfields not supported\n");
 250     break;
 251   }
 252   return 0;
 253 }
 254
 255 void start_typelib(typelib_t *typelib_type)
 256 {
 257     if (!do_typelib) return;
 258     typelib = typelib_type;
 259 }
 260
 261 void end_typelib(void)
 262 {
 263     if (!typelib) return;
 264
 265     create_msft_typelib(typelib);
 266 }
 267
 268 static void tlb_read(int fd, void *buf, int count)
 269 {
 270     if(read(fd, buf, count) < count)
 271         error("error while reading importlib.\n");
 272 }
 273
 274 static void tlb_lseek(int fd, off_t offset)
 275 {
 276     if(lseek(fd, offset, SEEK_SET) == -1)
 277         error("lseek failed\n");
 278 }
 279
 280 static void msft_read_guid(int fd, MSFT_SegDir *segdir, int offset, GUID *guid)
 281 {
 282     tlb_lseek(fd, segdir->pGuidTab.offset+offset);
 283     tlb_read(fd, guid, sizeof(GUID));
 284 }
 285
 286 static void read_msft_importlib(importlib_t *importlib, int fd)
 287 {
 288     MSFT_Header header;
 289     MSFT_SegDir segdir;
 290     int *typeinfo_offs;
 291     int i;
 292
 293     importlib->allocated = 0;
 294
 295     tlb_lseek(fd, 0);
 296     tlb_read(fd, &header, sizeof(header));
 297
 298     importlib->version = header.version;
 299
 300     typeinfo_offs = xmalloc(header.nrtypeinfos*sizeof(INT));
 301     tlb_read(fd, typeinfo_offs, header.nrtypeinfos*sizeof(INT));
 302     tlb_read(fd, &segdir, sizeof(segdir));
 303
 304     msft_read_guid(fd, &segdir, header.posguid, &importlib->guid);
 305
 306     importlib->ntypeinfos = header.nrtypeinfos;
 307     importlib->importinfos = xmalloc(importlib->ntypeinfos*sizeof(importinfo_t));
 308
 309     for(i=0; i < importlib->ntypeinfos; i++) {
 310         MSFT_TypeInfoBase base;
 311         MSFT_NameIntro nameintro;
 312         int len;
 313
 314         tlb_lseek(fd, sizeof(MSFT_Header) + header.nrtypeinfos*sizeof(INT) + sizeof(MSFT_SegDir)
 315                  + typeinfo_offs[i]);
 316         tlb_read(fd, &base, sizeof(base));
 317
 318         importlib->importinfos[i].importlib = importlib;
 319         importlib->importinfos[i].flags = (base.typekind&0xf)<<24;
 320         importlib->importinfos[i].offset = -1;
 321         importlib->importinfos[i].id = i;
 322
 323         if(base.posguid != -1) {
 324             importlib->importinfos[i].flags |= MSFT_IMPINFO_OFFSET_IS_GUID;
 325             msft_read_guid(fd, &segdir, base.posguid, &importlib->importinfos[i].guid);
 326         }
 327         else memset( &importlib->importinfos[i].guid, 0, sizeof(importlib->importinfos[i].guid));
 328
 329         tlb_lseek(fd, segdir.pNametab.offset + base.NameOffset);
 330         tlb_read(fd, &nameintro, sizeof(nameintro));
 331
 332         len = nameintro.namelen & 0xff;
 333
 334         importlib->importinfos[i].name = xmalloc(len+1);
 335         tlb_read(fd, importlib->importinfos[i].name, len);
 336         importlib->importinfos[i].name[len] = 0;
 337     }
 338
 339     free(typeinfo_offs);
 340 }
 341
 342 static void read_importlib(importlib_t *importlib)
 343 {
 344     int fd;
 345     INT magic;
 346     char *file_name;
 347
 348     file_name = wpp_find_include(importlib->name, NULL);
 349     if(file_name) {
 350         fd = open(file_name, O_RDONLY | O_BINARY );
 351         free(file_name);
 352     }else {
 353         fd = open(importlib->name, O_RDONLY | O_BINARY );
 354     }
 355
 356     if(fd < 0)
 357         error("Could not open importlib %s.\n", importlib->name);
 358
 359     tlb_read(fd, &magic, sizeof(magic));
 360
 361     switch(magic) {
 362     case MSFT_MAGIC:
 363         read_msft_importlib(importlib, fd);
 364         break;
 365     default:
 366         error("Wrong or unsupported typelib magic %x\n", magic);
 367     };
 368
 369     close(fd);
 370 }
 371
 372 void add_importlib(const char *name)
 373 {
 374     importlib_t *importlib;
 375
 376     if(!typelib) return;
 377
 378     LIST_FOR_EACH_ENTRY( importlib, &typelib->importlibs, importlib_t, entry )
 379         if(!strcmp(name, importlib->name))
 380             return;
 381
 382     chat("add_importlib: %s\n", name);
 383
 384     importlib = xmalloc(sizeof(*importlib));
 385     memset( importlib, 0, sizeof(*importlib) );
 386     importlib->name = xstrdup(name);
 387
 388     read_importlib(importlib);
 389     list_add_head( &typelib->importlibs, &importlib->entry );
 390 }