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 #include "windef.h"
  36 #include "winbase.h"
  37
  38 #include "widl.h"
  39 #include "utils.h"
  40 #include "parser.h"
  41 #include "header.h"
  42 #include "typelib.h"
  43 #include "widltypes.h"
  44 #include "typelib_struct.h"
  45 #include "typetree.h"
  46
  47
  48 /* List of oleauto types that should be recognized by name.
  49  * (most of) these seem to be intrinsic types in mktyplib.
  50  * This table MUST be alphabetically sorted on the kw field.
  51  */
  52 static const struct oatype {
  53   const char *kw;
  54   unsigned short vt;
  55 } oatypes[] = {
  56   {"BSTR",          VT_BSTR},
  57   {"CURRENCY",      VT_CY},
  58   {"DATE",          VT_DATE},
  59   {"DECIMAL",       VT_DECIMAL},
  60   {"HRESULT",       VT_HRESULT},
  61   {"LPSTR",         VT_LPSTR},
  62   {"LPWSTR",        VT_LPWSTR},
  63   {"SCODE",         VT_ERROR},
  64   {"VARIANT",       VT_VARIANT},
  65   {"VARIANT_BOOL",  VT_BOOL}
  66 };
  67 #define KWP(p) ((const struct oatype *)(p))
  68
  69 static int kw_cmp_func(const void *s1, const void *s2)
  70 {
  71         return strcmp(KWP(s1)->kw, KWP(s2)->kw);
  72 }
  73
  74 static unsigned short builtin_vt(const type_t *t)
  75 {
  76   const char *kw = t->name;
  77   struct oatype key;
  78   const struct oatype *kwp;
  79   key.kw = kw;
  80 #ifdef KW_BSEARCH
  81   kwp = bsearch(&key, oatypes, ARRAY_SIZE(oatypes), sizeof(oatypes[0]), kw_cmp_func);
  82 #else
  83   {
  84     unsigned int i;
  85     for (kwp = NULL, i = 0; i < ARRAY_SIZE(oatypes); i++)
  86       if (!kw_cmp_func(&key, &oatypes[i])) {
  87         kwp = &oatypes[i];
  88         break;
  89       }
  90   }
  91 #endif
  92   if (kwp) {
  93     return kwp->vt;
  94   }
  95   if (is_string_type (t->attrs, t))
  96   {
  97     const type_t *elem_type;
  98     if (is_array(t))
  99       elem_type = type_array_get_element_type(t);
 100     else
 101       elem_type = type_pointer_get_ref_type(t);
 102     if (type_get_type(elem_type) == TYPE_BASIC)
 103     {
 104       switch (type_basic_get_type(elem_type))
 105       {
 106       case TYPE_BASIC_CHAR: return VT_LPSTR;
 107       case TYPE_BASIC_WCHAR: return VT_LPWSTR;
 108       default: break;
 109       }
 110     }
 111   }
 112   return 0;
 113 }
 114
 115 static int match(const char*n, const char*m)
 116 {
 117   if (!n) return 0;
 118   return !strcmp(n, m);
 119 }
 120
 121 unsigned short get_type_vt(type_t *t)
 122 {
 123   unsigned short vt;
 124
 125   chat("get_type_vt: %p type->name %s\n", t, t->name);
 126   if (t->name) {
 127     vt = builtin_vt(t);
 128     if (vt) return vt;
 129   }
 130
 131   if (type_is_alias(t) &&
 132         (is_attr(t->attrs, ATTR_PUBLIC) || is_attr(t->attrs, ATTR_WIREMARSHAL)))
 133     return VT_USERDEFINED;
 134
 135   switch (type_get_type(t)) {
 136   case TYPE_BASIC:
 137     switch (type_basic_get_type(t)) {
 138     case TYPE_BASIC_BYTE:
 139       return VT_UI1;
 140     case TYPE_BASIC_CHAR:
 141     case TYPE_BASIC_INT8:
 142       if (type_basic_get_sign(t) > 0)
 143         return VT_UI1;
 144       else
 145         return VT_I1;
 146     case TYPE_BASIC_WCHAR:
 147       return VT_I2; /* mktyplib seems to parse wchar_t as short */
 148     case TYPE_BASIC_INT16:
 149       if (type_basic_get_sign(t) > 0)
 150         return VT_UI2;
 151       else
 152         return VT_I2;
 153     case TYPE_BASIC_INT:
 154       if (type_basic_get_sign(t) > 0)
 155         return VT_UINT;
 156       else
 157         return VT_INT;
 158     case TYPE_BASIC_INT32:
 159     case TYPE_BASIC_LONG:
 160     case TYPE_BASIC_ERROR_STATUS_T:
 161       if (type_basic_get_sign(t) > 0)
 162         return VT_UI4;
 163       else
 164         return VT_I4;
 165     case TYPE_BASIC_INT64:
 166     case TYPE_BASIC_HYPER:
 167       if (type_basic_get_sign(t) > 0)
 168         return VT_UI8;
 169       else
 170         return VT_I8;
 171     case TYPE_BASIC_INT3264:
 172       if (pointer_size == 8)
 173       {
 174         if (type_basic_get_sign(t) > 0)
 175           return VT_UI8;
 176         else
 177           return VT_I8;
 178       }
 179       else
 180       {
 181         if (type_basic_get_sign(t) > 0)
 182           return VT_UI4;
 183         else
 184           return VT_I4;
 185       }
 186     case TYPE_BASIC_FLOAT:
 187       return VT_R4;
 188     case TYPE_BASIC_DOUBLE:
 189       return VT_R8;
 190     case TYPE_BASIC_HANDLE:
 191       error("handles can't be used in typelibs\n");
 192     }
 193     break;
 194
 195   case TYPE_POINTER:
 196     return VT_PTR;
 197
 198   case TYPE_ARRAY:
 199     if (type_array_is_decl_as_ptr(t))
 200     {
 201       if (match(type_array_get_element_type(t)->name, "SAFEARRAY"))
 202         return VT_SAFEARRAY;
 203       return VT_PTR;
 204     }
 205     else
 206       return VT_CARRAY;
 207
 208   case TYPE_INTERFACE:
 209     if(match(t->name, "IUnknown"))
 210       return VT_UNKNOWN;
 211     if(match(t->name, "IDispatch"))
 212       return VT_DISPATCH;
 213     return VT_USERDEFINED;
 214
 215   case TYPE_ENUM:
 216   case TYPE_STRUCT:
 217   case TYPE_COCLASS:
 218   case TYPE_MODULE:
 219   case TYPE_UNION:
 220   case TYPE_ENCAPSULATED_UNION:
 221     return VT_USERDEFINED;
 222
 223   case TYPE_VOID:
 224     return VT_VOID;
 225
 226   case TYPE_ALIAS:
 227     /* aliases should be filtered out by the type_get_type call above */
 228     assert(0);
 229     break;
 230
 231   case TYPE_FUNCTION:
 232     error("get_type_vt: functions not supported\n");
 233     break;
 234
 235   case TYPE_BITFIELD:
 236     error("get_type_vt: bitfields not supported\n");
 237     break;
 238   }
 239   return 0;
 240 }
 241
 242 static void tlb_read(int fd, void *buf, int count)
 243 {
 244     if(read(fd, buf, count) < count)
 245         error("error while reading importlib.\n");
 246 }
 247
 248 static void tlb_lseek(int fd, off_t offset)
 249 {
 250     if(lseek(fd, offset, SEEK_SET) == -1)
 251         error("lseek failed\n");
 252 }
 253
 254 static void msft_read_guid(int fd, MSFT_SegDir *segdir, int offset, GUID *guid)
 255 {
 256     tlb_lseek(fd, segdir->pGuidTab.offset+offset);
 257     tlb_read(fd, guid, sizeof(GUID));
 258 }
 259
 260 static void read_msft_importlib(importlib_t *importlib, int fd)
 261 {
 262     MSFT_Header header;
 263     MSFT_SegDir segdir;
 264     int *typeinfo_offs;
 265     int i;
 266
 267     importlib->allocated = 0;
 268
 269     tlb_lseek(fd, 0);
 270     tlb_read(fd, &header, sizeof(header));
 271
 272     importlib->version = header.version;
 273
 274     typeinfo_offs = xmalloc(header.nrtypeinfos*sizeof(INT));
 275     tlb_read(fd, typeinfo_offs, header.nrtypeinfos*sizeof(INT));
 276     tlb_read(fd, &segdir, sizeof(segdir));
 277
 278     msft_read_guid(fd, &segdir, header.posguid, &importlib->guid);
 279
 280     importlib->ntypeinfos = header.nrtypeinfos;
 281     importlib->importinfos = xmalloc(importlib->ntypeinfos*sizeof(importinfo_t));
 282
 283     for(i=0; i < importlib->ntypeinfos; i++) {
 284         MSFT_TypeInfoBase base;
 285         MSFT_NameIntro nameintro;
 286         int len;
 287
 288         tlb_lseek(fd, sizeof(MSFT_Header) + header.nrtypeinfos*sizeof(INT) + sizeof(MSFT_SegDir)
 289                  + typeinfo_offs[i]);
 290         tlb_read(fd, &base, sizeof(base));
 291
 292         importlib->importinfos[i].importlib = importlib;
 293         importlib->importinfos[i].flags = (base.typekind&0xf)<<24;
 294         importlib->importinfos[i].offset = -1;
 295         importlib->importinfos[i].id = i;
 296
 297         if(base.posguid != -1) {
 298             importlib->importinfos[i].flags |= MSFT_IMPINFO_OFFSET_IS_GUID;
 299             msft_read_guid(fd, &segdir, base.posguid, &importlib->importinfos[i].guid);
 300         }
 301         else memset( &importlib->importinfos[i].guid, 0, sizeof(importlib->importinfos[i].guid));
 302
 303         tlb_lseek(fd, segdir.pNametab.offset + base.NameOffset);
 304         tlb_read(fd, &nameintro, sizeof(nameintro));
 305
 306         len = nameintro.namelen & 0xff;
 307
 308         importlib->importinfos[i].name = xmalloc(len+1);
 309         tlb_read(fd, importlib->importinfos[i].name, len);
 310         importlib->importinfos[i].name[len] = 0;
 311     }
 312
 313     free(typeinfo_offs);
 314 }
 315
 316 static int open_typelib(const char *name)
 317 {
 318     char *file_name;
 319     int fd;
 320
 321     file_name = wpp_find_include(name, NULL);
 322     if(!file_name)
 323         return open(name, O_RDONLY | O_BINARY );
 324
 325     fd = open(file_name, O_RDONLY | O_BINARY );
 326     free(file_name);
 327     return fd;
 328 }
 329
 330 static void read_importlib(importlib_t *importlib)
 331 {
 332     int fd;
 333     INT magic;
 334
 335     fd = open_typelib(importlib->name);
 336
 337     /* widl extension: if importlib name has no .tlb extension, try using .tlb */
 338     if(fd < 0) {
 339         const char *p = strrchr(importlib->name, '.');
 340         size_t len = p ? p - importlib->name : strlen(importlib->name);
 341         if(strcmp(importlib->name + len, ".tlb")) {
 342             char *tlb_name = xmalloc(len + 5);
 343             memcpy(tlb_name, importlib->name, len);
 344             strcpy(tlb_name + len, ".tlb");
 345             fd = open_typelib(tlb_name);
 346             free(tlb_name);
 347         }
 348     }
 349
 350     if(fd < 0)
 351         error("Could not find importlib %s.\n", importlib->name);
 352
 353     tlb_read(fd, &magic, sizeof(magic));
 354
 355     switch(magic) {
 356     case MSFT_MAGIC:
 357         read_msft_importlib(importlib, fd);
 358         break;
 359     default:
 360         error("Wrong or unsupported typelib magic %x\n", magic);
 361     };
 362
 363     close(fd);
 364 }
 365
 366 void add_importlib(const char *name, typelib_t *typelib)
 367 {
 368     importlib_t *importlib;
 369
 370     if(!typelib) return;
 371
 372     LIST_FOR_EACH_ENTRY( importlib, &typelib->importlibs, importlib_t, entry )
 373         if(!strcmp(name, importlib->name))
 374             return;
 375
 376     chat("add_importlib: %s\n", name);
 377
 378     importlib = xmalloc(sizeof(*importlib));
 379     memset( importlib, 0, sizeof(*importlib) );
 380     importlib->name = xstrdup(name);
 381
 382     read_importlib(importlib);
 383     list_add_head( &typelib->importlibs, &importlib->entry );
 384 }