dlls/setupapi/fakedll.c

   1 /*
   2  * Creation of Wine fake dlls for apps that access the dll file directly.
   3  *
   4  * Copyright 2006 Alexandre Julliard
   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 <stdarg.h>
  25 #include <fcntl.h>
  26 #ifdef HAVE_DIRENT_H
  27 # include <dirent.h>
  28 #endif
  29 #ifdef HAVE_SYS_STAT_H
  30 # include <sys/stat.h>
  31 #endif
  32 #ifdef HAVE_UNISTD_H
  33 # include <unistd.h>
  34 #endif
  35
  36 #define COBJMACROS
  37 #define ATL_INITGUID
  38 #define NONAMELESSSTRUCT
  39 #define NONAMELESSUNION
  40 #include "ntstatus.h"
  41 #define WIN32_NO_STATUS
  42 #include "windef.h"
  43 #include "winbase.h"
  44 #include "winuser.h"
  45 #include "winnt.h"
  46 #include "winternl.h"
  47 #include "wine/unicode.h"
  48 #include "wine/library.h"
  49 #include "wine/debug.h"
  50 #include "ole2.h"
  51 #include "atliface.h"
  52
  53 WINE_DEFAULT_DEBUG_CHANNEL(setupapi);
  54
  55 static const char fakedll_signature[] = "Wine placeholder DLL";
  56
  57 static const unsigned int file_alignment = 512;
  58 static const unsigned int section_alignment = 4096;
  59 static const unsigned int max_dll_name_len = 64;
  60
  61 static void *file_buffer;
  62 static SIZE_T file_buffer_size;
  63 static unsigned int handled_count;
  64 static unsigned int handled_total;
  65 static char **handled_dlls;
  66 static IRegistrar *registrar;
  67
  68 struct dll_info
  69 {
  70     HANDLE            handle;
  71     IMAGE_NT_HEADERS *nt;
  72     DWORD             file_pos;
  73     DWORD             mem_pos;
  74 };
  75
  76 #define ALIGN(size,align) (((size) + (align) - 1) & ~((align) - 1))
  77
  78 /* contents of the dll sections */
  79
  80 static const BYTE dll_code_section[] = { 0x31, 0xc0,          /* xor %eax,%eax */
  81                                          0xc2, 0x0c, 0x00 };  /* ret $12 */
  82
  83 static const BYTE exe_code_section[] = { 0xb8, 0x01, 0x00, 0x00, 0x00,  /* movl $1,%eax */
  84                                          0xc2, 0x04, 0x00 };            /* ret $4 */
  85
  86 static const IMAGE_BASE_RELOCATION reloc_section;  /* empty relocs */
  87
  88
  89 /* wrapper for WriteFile */
  90 static inline BOOL xwrite( struct dll_info *info, const void *data, DWORD size, DWORD offset )
  91 {
  92     DWORD res;
  93
  94     return (SetFilePointer( info->handle, offset, NULL, FILE_BEGIN ) != INVALID_SET_FILE_POINTER &&
  95             WriteFile( info->handle, data, size, &res, NULL ) &&
  96             res == size);
  97 }
  98
  99 /* add a new section to the dll NT header */
 100 static void add_section( struct dll_info *info, const char *name, DWORD size, DWORD flags )
 101 {
 102     IMAGE_SECTION_HEADER *sec = (IMAGE_SECTION_HEADER *)(info->nt + 1);
 103
 104     sec += info->nt->FileHeader.NumberOfSections;
 105     memcpy( sec->Name, name, min( strlen(name), sizeof(sec->Name)) );
 106     sec->Misc.VirtualSize = ALIGN( size, section_alignment );
 107     sec->VirtualAddress   = info->mem_pos;
 108     sec->SizeOfRawData    = size;
 109     sec->PointerToRawData = info->file_pos;
 110     sec->Characteristics  = flags;
 111     info->file_pos += ALIGN( size, file_alignment );
 112     info->mem_pos  += ALIGN( size, section_alignment );
 113     info->nt->FileHeader.NumberOfSections++;
 114 }
 115
 116 /* add a data directory to the dll NT header */
 117 static inline void add_directory( struct dll_info *info, unsigned int idx, DWORD rva, DWORD size )
 118 {
 119     info->nt->OptionalHeader.DataDirectory[idx].VirtualAddress = rva;
 120     info->nt->OptionalHeader.DataDirectory[idx].Size = size;
 121 }
 122
 123 /* convert a dll name W->A without depending on the current codepage */
 124 static char *dll_name_WtoA( char *nameA, const WCHAR *nameW, unsigned int len )
 125 {
 126     unsigned int i;
 127
 128     for (i = 0; i < len; i++)
 129     {
 130         char c = nameW[i];
 131         if (nameW[i] > 127) return NULL;
 132         if (c >= 'A' && c <= 'Z') c += 'a' - 'A';
 133         nameA[i] = c;
 134     }
 135     nameA[i] = 0;
 136     return nameA;
 137 }
 138
 139 /* convert a dll name A->W without depending on the current codepage */
 140 static WCHAR *dll_name_AtoW( WCHAR *nameW, const char *nameA, unsigned int len )
 141 {
 142     unsigned int i;
 143
 144     for (i = 0; i < len; i++) nameW[i] = nameA[i];
 145     nameW[i] = 0;
 146     return nameW;
 147 }
 148
 149 /* add a dll to the list of dll that have been taken care of */
 150 static BOOL add_handled_dll( const WCHAR *name )
 151 {
 152     unsigned int len = strlenW( name );
 153     int i, min, max, pos, res;
 154     char *nameA;
 155
 156     if (!(nameA = HeapAlloc( GetProcessHeap(), 0, len + 1 ))) return FALSE;
 157     if (!dll_name_WtoA( nameA, name, len )) goto failed;
 158
 159     min = 0;
 160     max = handled_count - 1;
 161     while (min <= max)
 162     {
 163         pos = (min + max) / 2;
 164         res = strcmp( handled_dlls[pos], nameA );
 165         if (!res) goto failed;  /* already in the list */
 166         if (res < 0) min = pos + 1;
 167         else max = pos - 1;
 168     }
 169
 170     if (handled_count >= handled_total)
 171     {
 172         char **new_dlls;
 173         unsigned int new_count = max( 64, handled_total * 2 );
 174
 175         if (handled_dlls) new_dlls = HeapReAlloc( GetProcessHeap(), 0, handled_dlls,
 176                                                   new_count * sizeof(*handled_dlls) );
 177         else new_dlls = HeapAlloc( GetProcessHeap(), 0, new_count * sizeof(*handled_dlls) );
 178         if (!new_dlls) goto failed;
 179         handled_dlls = new_dlls;
 180         handled_total = new_count;
 181     }
 182
 183     for (i = handled_count; i > min; i--) handled_dlls[i] = handled_dlls[i - 1];
 184     handled_dlls[i] = nameA;
 185     handled_count++;
 186     return TRUE;
 187
 188 failed:
 189     HeapFree( GetProcessHeap(), 0, nameA );
 190     return FALSE;
 191 }
 192
 193 /* read in the contents of a file into the global file buffer */
 194 /* return 1 on success, 0 on nonexistent file, -1 on other error */
 195 static int read_file( const char *name, void **data, SIZE_T *size )
 196 {
 197     struct stat st;
 198     int fd, ret = -1;
 199     size_t header_size;
 200     IMAGE_DOS_HEADER *dos;
 201     IMAGE_NT_HEADERS *nt;
 202     const size_t min_size = sizeof(*dos) + sizeof(fakedll_signature) +
 203         FIELD_OFFSET( IMAGE_NT_HEADERS, OptionalHeader.MajorLinkerVersion );
 204
 205     if ((fd = open( name, O_RDONLY | O_BINARY )) == -1) return 0;
 206     if (fstat( fd, &st ) == -1) goto done;
 207     *size = st.st_size;
 208     if (!file_buffer || st.st_size > file_buffer_size)
 209     {
 210         VirtualFree( file_buffer, 0, MEM_RELEASE );
 211         file_buffer = NULL;
 212         file_buffer_size = st.st_size;
 213         if (NtAllocateVirtualMemory( GetCurrentProcess(), &file_buffer, 0, &file_buffer_size,
 214                                      MEM_COMMIT, PAGE_READWRITE )) goto done;
 215     }
 216
 217     /* check for valid fake dll file */
 218
 219     if (st.st_size < min_size) goto done;
 220     header_size = min( st.st_size, 4096 );
 221     if (pread( fd, file_buffer, header_size, 0 ) != header_size) goto done;
 222     dos = file_buffer;
 223     if (dos->e_magic != IMAGE_DOS_SIGNATURE) goto done;
 224     if (dos->e_lfanew < sizeof(fakedll_signature)) goto done;
 225     if (memcmp( dos + 1, fakedll_signature, sizeof(fakedll_signature) )) goto done;
 226     if (dos->e_lfanew + FIELD_OFFSET(IMAGE_NT_HEADERS,OptionalHeader.MajorLinkerVersion) > header_size)
 227         goto done;
 228     nt = (IMAGE_NT_HEADERS *)((char *)file_buffer + dos->e_lfanew);
 229     if (nt->Signature == IMAGE_NT_SIGNATURE && nt->OptionalHeader.Magic != IMAGE_NT_OPTIONAL_HDR_MAGIC)
 230     {
 231         /* wrong 32/64 type, pretend it doesn't exist */
 232         ret = 0;
 233         goto done;
 234     }
 235     if (st.st_size == header_size ||
 236         pread( fd, (char *)file_buffer + header_size,
 237                st.st_size - header_size, header_size ) == st.st_size - header_size)
 238     {
 239         *data = file_buffer;
 240         ret = 1;
 241     }
 242 done:
 243     close( fd );
 244     return ret;
 245 }
 246
 247 /* build a complete fake dll from scratch */
 248 static BOOL build_fake_dll( HANDLE file )
 249 {
 250     IMAGE_DOS_HEADER *dos;
 251     IMAGE_NT_HEADERS *nt;
 252     struct dll_info info;
 253     BYTE *buffer;
 254     BOOL ret = FALSE;
 255     DWORD lfanew = (sizeof(*dos) + sizeof(fakedll_signature) + 15) & ~15;
 256     DWORD size, header_size = lfanew + sizeof(*nt);
 257
 258     info.handle = file;
 259     buffer = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, header_size + 8 * sizeof(IMAGE_SECTION_HEADER) );
 260
 261     dos = (IMAGE_DOS_HEADER *)buffer;
 262     dos->e_magic    = IMAGE_DOS_SIGNATURE;
 263     dos->e_cblp     = sizeof(*dos);
 264     dos->e_cp       = 1;
 265     dos->e_cparhdr  = lfanew / 16;
 266     dos->e_minalloc = 0;
 267     dos->e_maxalloc = 0xffff;
 268     dos->e_ss       = 0x0000;
 269     dos->e_sp       = 0x00b8;
 270     dos->e_lfarlc   = lfanew;
 271     dos->e_lfanew   = lfanew;
 272     memcpy( dos + 1, fakedll_signature, sizeof(fakedll_signature) );
 273
 274     nt = info.nt = (IMAGE_NT_HEADERS *)(buffer + lfanew);
 275     /* some fields are copied from the source dll */
 276 #ifdef _WIN64
 277     nt->FileHeader.Machine = IMAGE_FILE_MACHINE_AMD64;
 278 #else
 279     nt->FileHeader.Machine = IMAGE_FILE_MACHINE_I386;
 280 #endif
 281     nt->FileHeader.TimeDateStamp = 0;
 282     nt->FileHeader.Characteristics = IMAGE_FILE_DLL;
 283     nt->OptionalHeader.MajorLinkerVersion = 1;
 284     nt->OptionalHeader.MinorLinkerVersion = 0;
 285     nt->OptionalHeader.MajorOperatingSystemVersion = 1;
 286     nt->OptionalHeader.MinorOperatingSystemVersion = 0;
 287     nt->OptionalHeader.MajorImageVersion = 1;
 288     nt->OptionalHeader.MinorImageVersion = 0;
 289     nt->OptionalHeader.MajorSubsystemVersion = 4;
 290     nt->OptionalHeader.MinorSubsystemVersion = 0;
 291     nt->OptionalHeader.Win32VersionValue = 0;
 292     nt->OptionalHeader.Subsystem = IMAGE_SUBSYSTEM_WINDOWS_GUI;
 293     nt->OptionalHeader.DllCharacteristics = 0;
 294     nt->OptionalHeader.SizeOfStackReserve = 0;
 295     nt->OptionalHeader.SizeOfStackCommit = 0;
 296     nt->OptionalHeader.SizeOfHeapReserve = 0;
 297     nt->OptionalHeader.SizeOfHeapCommit = 0;
 298     /* other fields have fixed values */
 299     nt->Signature                              = IMAGE_NT_SIGNATURE;
 300     nt->FileHeader.NumberOfSections            = 0;
 301     nt->FileHeader.SizeOfOptionalHeader        = IMAGE_SIZEOF_NT_OPTIONAL_HEADER;
 302     nt->OptionalHeader.Magic                   = IMAGE_NT_OPTIONAL_HDR_MAGIC;
 303     nt->OptionalHeader.ImageBase               = 0x10000000;
 304     nt->OptionalHeader.SectionAlignment        = section_alignment;
 305     nt->OptionalHeader.FileAlignment           = file_alignment;
 306     nt->OptionalHeader.NumberOfRvaAndSizes     = IMAGE_NUMBEROF_DIRECTORY_ENTRIES;
 307
 308     header_size = (BYTE *)(nt + 1) - buffer;
 309     info.mem_pos  = ALIGN( header_size, section_alignment );
 310     info.file_pos = ALIGN( header_size, file_alignment );
 311
 312     nt->OptionalHeader.AddressOfEntryPoint = info.mem_pos;
 313     nt->OptionalHeader.BaseOfCode          = info.mem_pos;
 314
 315     if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
 316     {
 317         size = sizeof(dll_code_section);
 318         if (!xwrite( &info, dll_code_section, size, info.file_pos )) goto done;
 319     }
 320     else
 321     {
 322         size = sizeof(exe_code_section);
 323         if (!xwrite( &info, exe_code_section, size, info.file_pos )) goto done;
 324     }
 325     nt->OptionalHeader.SizeOfCode = size;
 326     add_section( &info, ".text", size, IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ );
 327
 328     if (!xwrite( &info, &reloc_section, sizeof(reloc_section), info.file_pos )) goto done;
 329     add_directory( &info, IMAGE_DIRECTORY_ENTRY_BASERELOC, info.mem_pos, sizeof(reloc_section) );
 330     add_section( &info, ".reloc", sizeof(reloc_section),
 331                  IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_DISCARDABLE | IMAGE_SCN_MEM_READ );
 332
 333     header_size += nt->FileHeader.NumberOfSections * sizeof(IMAGE_SECTION_HEADER);
 334     nt->OptionalHeader.SizeOfHeaders = ALIGN( header_size, file_alignment );
 335     nt->OptionalHeader.SizeOfImage   = ALIGN( info.mem_pos, section_alignment );
 336     ret = xwrite( &info, buffer, header_size, 0 );
 337 done:
 338     HeapFree( GetProcessHeap(), 0, buffer );
 339     return ret;
 340 }
 341
 342 /* check if an existing file is a fake dll so that we can overwrite it */
 343 static BOOL is_fake_dll( HANDLE h )
 344 {
 345     IMAGE_DOS_HEADER *dos;
 346     DWORD size;
 347     BYTE buffer[sizeof(*dos) + sizeof(fakedll_signature)];
 348
 349     if (!ReadFile( h, buffer, sizeof(buffer), &size, NULL ) || size != sizeof(buffer))
 350         return FALSE;
 351     dos = (IMAGE_DOS_HEADER *)buffer;
 352     if (dos->e_magic != IMAGE_DOS_SIGNATURE) return FALSE;
 353     if (dos->e_lfanew < size) return FALSE;
 354     return !memcmp( dos + 1, fakedll_signature, sizeof(fakedll_signature) );
 355 }
 356
 357 /* create directories leading to a given file */
 358 static void create_directories( const WCHAR *name )
 359 {
 360     WCHAR *path, *p;
 361
 362     /* create the directory/directories */
 363     path = HeapAlloc(GetProcessHeap(), 0, (strlenW(name) + 1)*sizeof(WCHAR));
 364     strcpyW(path, name);
 365
 366     p = strchrW(path, '\\');
 367     while (p != NULL)
 368     {
 369         *p = 0;
 370         if (!CreateDirectoryW(path, NULL))
 371             TRACE("Couldn't create directory %s - error: %d\n", wine_dbgstr_w(path), GetLastError());
 372         *p = '\\';
 373         p = strchrW(p+1, '\\');
 374     }
 375     HeapFree(GetProcessHeap(), 0, path);
 376 }
 377
 378 static inline char *prepend( char *buffer, const char *str, size_t len )
 379 {
 380     return memcpy( buffer - len, str, len );
 381 }
 382
 383 /* try to load a pre-compiled fake dll */
 384 static void *load_fake_dll( const WCHAR *name, SIZE_T *size )
 385 {
 386     const char *build_dir = wine_get_build_dir();
 387     const char *path;
 388     char *file, *ptr;
 389     void *data = NULL;
 390     unsigned int i, pos, len, namelen, maxlen = 0;
 391     WCHAR *p;
 392     int res = 0;
 393
 394     if ((p = strrchrW( name, '\\' ))) name = p + 1;
 395
 396     i = 0;
 397     if (build_dir) maxlen = strlen(build_dir) + sizeof("/programs/") + strlenW(name);
 398     while ((path = wine_dll_enum_load_path( i++ ))) maxlen = max( maxlen, strlen(path) );
 399     maxlen += sizeof("/fakedlls") + strlenW(name) + 2;
 400
 401     if (!(file = HeapAlloc( GetProcessHeap(), 0, maxlen ))) return NULL;
 402
 403     len = strlenW( name );
 404     pos = maxlen - len - sizeof(".fake");
 405     if (!dll_name_WtoA( file + pos, name, len )) goto done;
 406     file[--pos] = '/';
 407
 408     if (build_dir)
 409     {
 410         strcpy( file + pos + len + 1, ".fake" );
 411
 412         /* try as a dll */
 413         ptr = file + pos;
 414         namelen = len + 1;
 415         if (namelen > 4 && !memcmp( ptr + namelen - 4, ".dll", 4 )) namelen -= 4;
 416         ptr = prepend( ptr, ptr, namelen );
 417         ptr = prepend( ptr, "/dlls", sizeof("/dlls") - 1 );
 418         ptr = prepend( ptr, build_dir, strlen(build_dir) );
 419         if ((res = read_file( ptr, &data, size ))) goto done;
 420
 421         /* now as a program */
 422         ptr = file + pos;
 423         namelen = len + 1;
 424         if (namelen > 4 && !memcmp( ptr + namelen - 4, ".exe", 4 )) namelen -= 4;
 425         ptr = prepend( ptr, ptr, namelen );
 426         ptr = prepend( ptr, "/programs", sizeof("/programs") - 1 );
 427         ptr = prepend( ptr, build_dir, strlen(build_dir) );
 428         if ((res = read_file( ptr, &data, size ))) goto done;
 429     }
 430
 431     file[pos + len + 1] = 0;
 432     for (i = 0; (path = wine_dll_enum_load_path( i )); i++)
 433     {
 434         ptr = prepend( file + pos, "/fakedlls", sizeof("/fakedlls") - 1 );
 435         ptr = prepend( ptr, path, strlen(path) );
 436         if ((res = read_file( ptr, &data, size ))) break;
 437     }
 438
 439 done:
 440     HeapFree( GetProcessHeap(), 0, file );
 441     if (res == 1) return data;
 442     return NULL;
 443 }
 444
 445 /* create the fake dll destination file */
 446 static HANDLE create_dest_file( const WCHAR *name )
 447 {
 448     /* first check for an existing file */
 449     HANDLE h = CreateFileW( name, GENERIC_READ|GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL );
 450     if (h != INVALID_HANDLE_VALUE)
 451     {
 452         if (!is_fake_dll( h ))
 453         {
 454             TRACE( "%s is not a fake dll, not overwriting it\n", debugstr_w(name) );
 455             CloseHandle( h );
 456             return 0;
 457         }
 458         /* truncate the file */
 459         SetFilePointer( h, 0, NULL, FILE_BEGIN );
 460         SetEndOfFile( h );
 461     }
 462     else
 463     {
 464         if (GetLastError() == ERROR_PATH_NOT_FOUND) create_directories( name );
 465
 466         h = CreateFileW( name, GENERIC_WRITE, 0, NULL, CREATE_NEW, 0, NULL );
 467         if (h == INVALID_HANDLE_VALUE)
 468             ERR( "failed to create %s (error=%u)\n", debugstr_w(name), GetLastError() );
 469     }
 470     return h;
 471 }
 472
 473 static BOOL CALLBACK register_resource( HMODULE module, LPCWSTR type, LPWSTR name, LONG_PTR arg )
 474 {
 475     HRESULT *hr = (HRESULT *)arg;
 476     WCHAR *buffer;
 477     HRSRC rsrc = FindResourceW( module, name, type );
 478     char *str = LoadResource( module, rsrc );
 479     DWORD lenW, lenA = SizeofResource( module, rsrc );
 480
 481     if (!str) return FALSE;
 482     lenW = MultiByteToWideChar( CP_UTF8, 0, str, lenA, NULL, 0 ) + 1;
 483     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, lenW * sizeof(WCHAR) ))) return FALSE;
 484     MultiByteToWideChar( CP_UTF8, 0, str, lenA, buffer, lenW );
 485     buffer[lenW - 1] = 0;
 486     *hr = IRegistrar_StringRegister( registrar, buffer );
 487     HeapFree( GetProcessHeap(), 0, buffer );
 488     return TRUE;
 489 }
 490
 491 static void register_fake_dll( const WCHAR *name, const void *data, size_t size )
 492 {
 493     static const WCHAR atlW[] = {'a','t','l','.','d','l','l',0};
 494     static const WCHAR moduleW[] = {'M','O','D','U','L','E',0};
 495     static const WCHAR regtypeW[] = {'W','I','N','E','_','R','E','G','I','S','T','R','Y',0};
 496     const IMAGE_RESOURCE_DIRECTORY *resdir;
 497     LDR_RESOURCE_INFO info;
 498     HRESULT hr = S_OK;
 499     HMODULE module = (HMODULE)((ULONG_PTR)data | 1);
 500
 501     info.Type = (ULONG_PTR)regtypeW;
 502     if (LdrFindResourceDirectory_U( module, &info, 1, &resdir )) return;
 503
 504     if (!registrar)
 505     {
 506         /* create the object by hand since we can't guarantee that atl and ole32 are registered */
 507         IClassFactory *cf;
 508         HRESULT (WINAPI *pDllGetClassObject)( REFCLSID clsid, REFIID iid, LPVOID *ppv );
 509         HMODULE atl = LoadLibraryW( atlW );
 510
 511         if ((pDllGetClassObject = (void *)GetProcAddress( atl, "DllGetClassObject" )))
 512         {
 513             hr = pDllGetClassObject( &CLSID_Registrar, &IID_IClassFactory, (void **)&cf );
 514             if (SUCCEEDED( hr ))
 515             {
 516                 hr = IClassFactory_CreateInstance( cf, NULL, &IID_IRegistrar, (void **)&registrar );
 517                 IClassFactory_Release( cf );
 518             }
 519         }
 520         if (!registrar)
 521         {
 522             ERR( "failed to create IRegistrar: %x\n", hr );
 523             return;
 524         }
 525     }
 526
 527     TRACE( "registering %s\n", debugstr_w(name) );
 528     IRegistrar_ClearReplacements( registrar );
 529     IRegistrar_AddReplacement( registrar, moduleW, name );
 530     EnumResourceNamesW( module, regtypeW, register_resource, (LONG_PTR)&hr );
 531     if (FAILED(hr)) ERR( "failed to register %s: %x\n", debugstr_w(name), hr );
 532 }
 533
 534 /* copy a fake dll file to the dest directory */
 535 static void install_fake_dll( WCHAR *dest, char *file, const char *ext )
 536 {
 537     int ret;
 538     SIZE_T size;
 539     void *data;
 540     DWORD written;
 541     WCHAR *destname = dest + strlenW(dest);
 542     char *name = strrchr( file, '/' ) + 1;
 543     char *end = name + strlen(name);
 544
 545     if (ext) strcpy( end, ext );
 546     if (!(ret = read_file( file, &data, &size ))) return;
 547
 548     if (end > name + 2 && !strncmp( end - 2, "16", 2 )) end -= 2;  /* remove "16" suffix */
 549     dll_name_AtoW( destname, name, end - name );
 550     if (!add_handled_dll( destname )) ret = -1;
 551
 552     if (ret != -1)
 553     {
 554         HANDLE h = create_dest_file( dest );
 555
 556         if (h && h != INVALID_HANDLE_VALUE)
 557         {
 558             TRACE( "%s -> %s\n", debugstr_a(file), debugstr_w(dest) );
 559
 560             ret = (WriteFile( h, data, size, &written, NULL ) && written == size);
 561             if (!ret) ERR( "failed to write to %s (error=%u)\n", debugstr_w(dest), GetLastError() );
 562             CloseHandle( h );
 563             if (ret) register_fake_dll( dest, data, size );
 564             else DeleteFileW( dest );
 565         }
 566     }
 567     *destname = 0;  /* restore it for next file */
 568 }
 569
 570 /* find and install all fake dlls in a given lib directory */
 571 static void install_lib_dir( WCHAR *dest, char *file, const char *default_ext )
 572 {
 573     DIR *dir;
 574     struct dirent *de;
 575     char *name;
 576
 577     if (!(dir = opendir( file ))) return;
 578     name = file + strlen(file);
 579     *name++ = '/';
 580     while ((de = readdir( dir )))
 581     {
 582         if (strlen( de->d_name ) > max_dll_name_len) continue;
 583         if (!strcmp( de->d_name, "." )) continue;
 584         if (!strcmp( de->d_name, ".." )) continue;
 585         strcpy( name, de->d_name );
 586         if (default_ext)  /* inside build dir */
 587         {
 588             strcat( name, "/" );
 589             strcat( name, de->d_name );
 590             if (!strchr( de->d_name, '.' )) strcat( name, default_ext );
 591             install_fake_dll( dest, file, ".fake" );
 592         }
 593         else install_fake_dll( dest, file, NULL );
 594     }
 595     closedir( dir );
 596 }
 597
 598 /* create fake dlls in dirname for all the files we can find */
 599 static BOOL create_wildcard_dlls( const WCHAR *dirname )
 600 {
 601     const char *build_dir = wine_get_build_dir();
 602     const char *path;
 603     unsigned int i, maxlen = 0;
 604     char *file;
 605     WCHAR *dest;
 606
 607     if (build_dir) maxlen = strlen(build_dir) + sizeof("/programs/");
 608     for (i = 0; (path = wine_dll_enum_load_path(i)); i++) maxlen = max( maxlen, strlen(path) );
 609     maxlen += 2 * max_dll_name_len + 2 + sizeof(".dll.fake");
 610     if (!(file = HeapAlloc( GetProcessHeap(), 0, maxlen ))) return FALSE;
 611
 612     if (!(dest = HeapAlloc( GetProcessHeap(), 0, (strlenW(dirname) + max_dll_name_len) * sizeof(WCHAR) )))
 613     {
 614         HeapFree( GetProcessHeap(), 0, file );
 615         return FALSE;
 616     }
 617     strcpyW( dest, dirname );
 618     dest[strlenW(dest) - 1] = 0;  /* remove wildcard */
 619
 620     if (build_dir)
 621     {
 622         strcpy( file, build_dir );
 623         strcat( file, "/dlls" );
 624         install_lib_dir( dest, file, ".dll" );
 625         strcpy( file, build_dir );
 626         strcat( file, "/programs" );
 627         install_lib_dir( dest, file, ".exe" );
 628     }
 629     for (i = 0; (path = wine_dll_enum_load_path( i )); i++)
 630     {
 631         strcpy( file, path );
 632         strcat( file, "/fakedlls" );
 633         install_lib_dir( dest, file, NULL );
 634     }
 635     HeapFree( GetProcessHeap(), 0, file );
 636     HeapFree( GetProcessHeap(), 0, dest );
 637     return TRUE;
 638 }
 639
 640 /***********************************************************************
 641  *            create_fake_dll
 642  */
 643 BOOL create_fake_dll( const WCHAR *name, const WCHAR *source )
 644 {
 645     HANDLE h;
 646     BOOL ret;
 647     SIZE_T size;
 648     const WCHAR *filename;
 649     void *buffer;
 650
 651     if (!(filename = strrchrW( name, '\\' ))) filename = name;
 652     else filename++;
 653
 654     /* check for empty name which means to only create the directory */
 655     if (!filename[0])
 656     {
 657         create_directories( name );
 658         return TRUE;
 659     }
 660     if (filename[0] == '*' && !filename[1]) return create_wildcard_dlls( name );
 661
 662     add_handled_dll( filename );
 663
 664     if (!(h = create_dest_file( name ))) return TRUE;  /* not a fake dll */
 665     if (h == INVALID_HANDLE_VALUE) return FALSE;
 666
 667     if (source[0] == '-' && !source[1])
 668     {
 669         /* '-' source means delete the file */
 670         TRACE( "deleting %s\n", debugstr_w(name) );
 671         ret = FALSE;
 672     }
 673     else if ((buffer = load_fake_dll( source, &size )))
 674     {
 675         DWORD written;
 676
 677         ret = (WriteFile( h, buffer, size, &written, NULL ) && written == size);
 678         if (ret) register_fake_dll( name, buffer, size );
 679         else ERR( "failed to write to %s (error=%u)\n", debugstr_w(name), GetLastError() );
 680     }
 681     else
 682     {
 683         WARN( "fake dll %s not found for %s\n", debugstr_w(source), debugstr_w(name) );
 684         ret = build_fake_dll( h );
 685     }
 686
 687     CloseHandle( h );
 688     if (!ret) DeleteFileW( name );
 689     return ret;
 690 }
 691
 692
 693 /***********************************************************************
 694  *            cleanup_fake_dlls
 695  */
 696 void cleanup_fake_dlls(void)
 697 {
 698     if (file_buffer) VirtualFree( file_buffer, 0, MEM_RELEASE );
 699     file_buffer = NULL;
 700     HeapFree( GetProcessHeap(), 0, handled_dlls );
 701     handled_dlls = NULL;
 702     handled_count = handled_total = 0;
 703     if (registrar) IRegistrar_Release( registrar );
 704     registrar = NULL;
 705 }