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 static typelib_t *typelib;
  48
  49 /* List of oleauto types that should be recognized by name.
  50  * (most of) these seem to be intrinsic types in mktyplib.
  51  * This table MUST be alphabetically sorted on the kw field.
  52  */
  53 static const struct oatype {
  54   const char *kw;
  55   unsigned short vt;
  56 } oatypes[] = {
  57   {"BSTR",          VT_BSTR},
  58   {"CURRENCY",      VT_CY},
  59   {"DATE",          VT_DATE},
  60   {"DECIMAL",       VT_DECIMAL},
  61   {"HRESULT",       VT_HRESULT},
  62   {"LPSTR",         VT_LPSTR},
  63   {"LPWSTR",        VT_LPWSTR},
  64   {"SCODE",         VT_ERROR},
  65   {"VARIANT",       VT_VARIANT},
  66   {"VARIANT_BOOL",  VT_BOOL}
  67 };
  68 #define NTYPES (sizeof(oatypes)/sizeof(oatypes[0]))
  69 #define KWP(p) ((const struct oatype *)(p))
  70
  71 static int kw_cmp_func(const void *s1, const void *s2)
  72 {
  73         return strcmp(KWP(s1)->kw, KWP(s2)->kw);
  74 }
  75
  76 static unsigned short builtin_vt(const type_t *t)
  77 {
  78   const char *kw = t->name;
  79   struct oatype key;
  80   const struct oatype *kwp;
  81   key.kw = kw;
  82 #ifdef KW_BSEARCH
  83   kwp = bsearch(&key, oatypes, NTYPES, sizeof(oatypes[0]), kw_cmp_func);
  84 #else
  85   {
  86     unsigned int i;
  87     for (kwp=NULL, i=0; i < NTYPES; i++)
  88       if (!kw_cmp_func(&key, &oatypes[i])) {
  89         kwp = &oatypes[i];
  90         break;
  91       }
  92   }
  93 #endif
  94   if (kwp) {
  95     return kwp->vt;
  96   }
  97   if (is_string_type (t->attrs, t))
  98   {
  99     const type_t *elem_type;
 100     if (is_array(t))
 101       elem_type = type_array_get_element(t);
 102     else
 103       elem_type = type_pointer_get_ref(t);
 104     if (type_get_type(elem_type) == TYPE_BASIC)
 105     {
 106       switch (type_basic_get_type(elem_type))
 107       {
 108       case TYPE_BASIC_CHAR: return VT_LPSTR;
 109       case TYPE_BASIC_WCHAR: return VT_LPWSTR;
 110       default: break;
 111       }
 112     }
 113   }
 114   return 0;
 115 }
 116
 117 static int match(const char*n, const char*m)
 118 {
 119   if (!n) return 0;
 120   return !strcmp(n, m);
 121 }
 122
 123 unsigned short get_type_vt(type_t *t)
 124 {
 125   unsigned short vt;
 126
 127   chat("get_type_vt: %p type->name %s\n", t, t->name);
 128   if (t->name) {
 129     vt = builtin_vt(t);
 130     if (vt) return vt;
 131   }
 132
 133   if (type_is_alias(t) && is_attr(t->attrs, ATTR_PUBLIC))
 134     return VT_USERDEFINED;
 135
 136   switch (type_get_type(t)) {
 137   case TYPE_BASIC:
 138     switch (type_basic_get_type(t)) {
 139     case TYPE_BASIC_BYTE:
 140       return VT_UI1;
 141     case TYPE_BASIC_CHAR:
 142     case TYPE_BASIC_INT8:
 143       if (type_basic_get_sign(t) > 0)
 144         return VT_UI1;
 145       else
 146         return VT_I1;
 147     case TYPE_BASIC_WCHAR:
 148       return VT_I2; /* mktyplib seems to parse wchar_t as short */
 149     case TYPE_BASIC_INT16:
 150       if (type_basic_get_sign(t) > 0)
 151         return VT_UI2;
 152       else
 153         return VT_I2;
 154     case TYPE_BASIC_INT:
 155       if (type_basic_get_sign(t) > 0)
 156         return VT_UINT;
 157       else
 158         return VT_INT;
 159     case TYPE_BASIC_INT32:
 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 (typelib_kind == SYS_WIN64)
 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(t)->name, "SAFEARRAY"))
 202         return VT_SAFEARRAY;
 203     }
 204     else
 205       error("get_type_vt: array types not supported\n");
 206     return VT_PTR;
 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 void start_typelib(typelib_t *typelib_type)
 243 {
 244     if (!do_typelib) return;
 245     typelib = typelib_type;
 246 }
 247
 248 void end_typelib(void)
 249 {
 250     if (!typelib) return;
 251
 252     create_msft_typelib(typelib);
 253 }
 254
 255 static void tlb_read(int fd, void *buf, int count)
 256 {
 257     if(read(fd, buf, count) < count)
 258         error("error while reading importlib.\n");
 259 }
 260
 261 static void tlb_lseek(int fd, off_t offset)
 262 {
 263     if(lseek(fd, offset, SEEK_SET) == -1)
 264         error("lseek failed\n");
 265 }
 266
 267 static void msft_read_guid(int fd, MSFT_SegDir *segdir, int offset, GUID *guid)
 268 {
 269     tlb_lseek(fd, segdir->pGuidTab.offset+offset);
 270     tlb_read(fd, guid, sizeof(GUID));
 271 }
 272
 273 static void read_msft_importlib(importlib_t *importlib, int fd)
 274 {
 275     MSFT_Header header;
 276     MSFT_SegDir segdir;
 277     int *typeinfo_offs;
 278     int i;
 279
 280     importlib->allocated = 0;
 281
 282     tlb_lseek(fd, 0);
 283     tlb_read(fd, &header, sizeof(header));
 284
 285     importlib->version = header.version;
 286
 287     typeinfo_offs = xmalloc(header.nrtypeinfos*sizeof(INT));
 288     tlb_read(fd, typeinfo_offs, header.nrtypeinfos*sizeof(INT));
 289     tlb_read(fd, &segdir, sizeof(segdir));
 290
 291     msft_read_guid(fd, &segdir, header.posguid, &importlib->guid);
 292
 293     importlib->ntypeinfos = header.nrtypeinfos;
 294     importlib->importinfos = xmalloc(importlib->ntypeinfos*sizeof(importinfo_t));
 295
 296     for(i=0; i < importlib->ntypeinfos; i++) {
 297         MSFT_TypeInfoBase base;
 298         MSFT_NameIntro nameintro;
 299         int len;
 300
 301         tlb_lseek(fd, sizeof(MSFT_Header) + header.nrtypeinfos*sizeof(INT) + sizeof(MSFT_SegDir)
 302                  + typeinfo_offs[i]);
 303         tlb_read(fd, &base, sizeof(base));
 304
 305         importlib->importinfos[i].importlib = importlib;
 306         importlib->importinfos[i].flags = (base.typekind&0xf)<<24;
 307         importlib->importinfos[i].offset = -1;
 308         importlib->importinfos[i].id = i;
 309
 310         if(base.posguid != -1) {
 311             importlib->importinfos[i].flags |= MSFT_IMPINFO_OFFSET_IS_GUID;
 312             msft_read_guid(fd, &segdir, base.posguid, &importlib->importinfos[i].guid);
 313         }
 314         else memset( &importlib->importinfos[i].guid, 0, sizeof(importlib->importinfos[i].guid));
 315
 316         tlb_lseek(fd, segdir.pNametab.offset + base.NameOffset);
 317         tlb_read(fd, &nameintro, sizeof(nameintro));
 318
 319         len = nameintro.namelen & 0xff;
 320
 321         importlib->importinfos[i].name = xmalloc(len+1);
 322         tlb_read(fd, importlib->importinfos[i].name, len);
 323         importlib->importinfos[i].name[len] = 0;
 324     }
 325
 326     free(typeinfo_offs);
 327 }
 328
 329 static int open_typelib(const char *name)
 330 {
 331     char *file_name;
 332     int fd;
 333
 334     file_name = wpp_find_include(name, NULL);
 335     if(!file_name)
 336         return open(name, O_RDONLY | O_BINARY );
 337
 338     fd = open(file_name, O_RDONLY | O_BINARY );
 339     free(file_name);
 340     return fd;
 341 }
 342
 343 static void read_importlib(importlib_t *importlib)
 344 {
 345     int fd;
 346     INT magic;
 347
 348     fd = open_typelib(importlib->name);
 349
 350     /* widl extension: if importlib name has no .tlb extension, try using .tlb */
 351     if(fd < 0) {
 352         const char *p = strrchr(importlib->name, '.');
 353         size_t len = p ? p - importlib->name : strlen(importlib->name);
 354         if(strcmp(importlib->name + len, ".tlb")) {
 355             char *tlb_name = xmalloc(len + 5);
 356             memcpy(tlb_name, importlib->name, len);
 357             strcpy(tlb_name + len, ".tlb");
 358             fd = open_typelib(tlb_name);
 359             free(tlb_name);
 360         }
 361     }
 362
 363     if(fd < 0)
 364         error("Could not find importlib %s.\n", importlib->name);
 365
 366     tlb_read(fd, &magic, sizeof(magic));
 367
 368     switch(magic) {
 369     case MSFT_MAGIC:
 370         read_msft_importlib(importlib, fd);
 371         break;
 372     default:
 373         error("Wrong or unsupported typelib magic %x\n", magic);
 374     };
 375
 376     close(fd);
 377 }
 378
 379 void add_importlib(const char *name)
 380 {
 381     importlib_t *importlib;
 382
 383     if(!typelib) return;
 384
 385     LIST_FOR_EACH_ENTRY( importlib, &typelib->importlibs, importlib_t, entry )
 386         if(!strcmp(name, importlib->name))
 387             return;
 388
 389     chat("add_importlib: %s\n", name);
 390
 391     importlib = xmalloc(sizeof(*importlib));
 392     memset( importlib, 0, sizeof(*importlib) );
 393     importlib->name = xstrdup(name);
 394
 395     read_importlib(importlib);
 396     list_add_head( &typelib->importlibs, &importlib->entry );
 397 }