1 //===-- WindowsResource.cpp -------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements the .res file class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/Object/WindowsResource.h" 14 #include "llvm/Object/COFF.h" 15 #include "llvm/Support/FileOutputBuffer.h" 16 #include "llvm/Support/FormatVariadic.h" 17 #include "llvm/Support/MathExtras.h" 18 #include "llvm/Support/ScopedPrinter.h" 19 #include <ctime> 20 #include <queue> 21 #include <system_error> 22 23 using namespace llvm; 24 using namespace object; 25 26 namespace llvm { 27 namespace object { 28 29 #define RETURN_IF_ERROR(X) \ 30 if (auto EC = X) \ 31 return EC; 32 33 #define UNWRAP_REF_OR_RETURN(Name, Expr) \ 34 auto Name##OrErr = Expr; \ 35 if (!Name##OrErr) \ 36 return Name##OrErr.takeError(); \ 37 const auto &Name = *Name##OrErr; 38 39 #define UNWRAP_OR_RETURN(Name, Expr) \ 40 auto Name##OrErr = Expr; \ 41 if (!Name##OrErr) \ 42 return Name##OrErr.takeError(); \ 43 auto Name = *Name##OrErr; 44 45 const uint32_t MIN_HEADER_SIZE = 7 * sizeof(uint32_t) + 2 * sizeof(uint16_t); 46 47 // COFF files seem to be inconsistent with alignment between sections, just use 48 // 8-byte because it makes everyone happy. 49 const uint32_t SECTION_ALIGNMENT = sizeof(uint64_t); 50 51 WindowsResource::WindowsResource(MemoryBufferRef Source) 52 : Binary(Binary::ID_WinRes, Source) { 53 size_t LeadingSize = WIN_RES_MAGIC_SIZE + WIN_RES_NULL_ENTRY_SIZE; 54 BBS = BinaryByteStream(Data.getBuffer().drop_front(LeadingSize), 55 support::little); 56 } 57 58 // static 59 Expected<std::unique_ptr<WindowsResource>> 60 WindowsResource::createWindowsResource(MemoryBufferRef Source) { 61 if (Source.getBufferSize() < WIN_RES_MAGIC_SIZE + WIN_RES_NULL_ENTRY_SIZE) 62 return make_error<GenericBinaryError>( 63 Source.getBufferIdentifier() + ": too small to be a resource file", 64 object_error::invalid_file_type); 65 std::unique_ptr<WindowsResource> Ret(new WindowsResource(Source)); 66 return std::move(Ret); 67 } 68 69 Expected<ResourceEntryRef> WindowsResource::getHeadEntry() { 70 if (BBS.getLength() < sizeof(WinResHeaderPrefix) + sizeof(WinResHeaderSuffix)) 71 return make_error<EmptyResError>(getFileName() + " contains no entries", 72 object_error::unexpected_eof); 73 return ResourceEntryRef::create(BinaryStreamRef(BBS), this); 74 } 75 76 ResourceEntryRef::ResourceEntryRef(BinaryStreamRef Ref, 77 const WindowsResource *Owner) 78 : Reader(Ref), Owner(Owner) {} 79 80 Expected<ResourceEntryRef> 81 ResourceEntryRef::create(BinaryStreamRef BSR, const WindowsResource *Owner) { 82 auto Ref = ResourceEntryRef(BSR, Owner); 83 if (auto E = Ref.loadNext()) 84 return std::move(E); 85 return Ref; 86 } 87 88 Error ResourceEntryRef::moveNext(bool &End) { 89 // Reached end of all the entries. 90 if (Reader.bytesRemaining() == 0) { 91 End = true; 92 return Error::success(); 93 } 94 RETURN_IF_ERROR(loadNext()); 95 96 return Error::success(); 97 } 98 99 static Error readStringOrId(BinaryStreamReader &Reader, uint16_t &ID, 100 ArrayRef<UTF16> &Str, bool &IsString) { 101 uint16_t IDFlag; 102 RETURN_IF_ERROR(Reader.readInteger(IDFlag)); 103 IsString = IDFlag != 0xffff; 104 105 if (IsString) { 106 Reader.setOffset( 107 Reader.getOffset() - 108 sizeof(uint16_t)); // Re-read the bytes which we used to check the flag. 109 RETURN_IF_ERROR(Reader.readWideString(Str)); 110 } else 111 RETURN_IF_ERROR(Reader.readInteger(ID)); 112 113 return Error::success(); 114 } 115 116 Error ResourceEntryRef::loadNext() { 117 const WinResHeaderPrefix *Prefix; 118 RETURN_IF_ERROR(Reader.readObject(Prefix)); 119 120 if (Prefix->HeaderSize < MIN_HEADER_SIZE) 121 return make_error<GenericBinaryError>(Owner->getFileName() + 122 ": header size too small", 123 object_error::parse_failed); 124 125 RETURN_IF_ERROR(readStringOrId(Reader, TypeID, Type, IsStringType)); 126 127 RETURN_IF_ERROR(readStringOrId(Reader, NameID, Name, IsStringName)); 128 129 RETURN_IF_ERROR(Reader.padToAlignment(WIN_RES_HEADER_ALIGNMENT)); 130 131 RETURN_IF_ERROR(Reader.readObject(Suffix)); 132 133 RETURN_IF_ERROR(Reader.readArray(Data, Prefix->DataSize)); 134 135 RETURN_IF_ERROR(Reader.padToAlignment(WIN_RES_DATA_ALIGNMENT)); 136 137 return Error::success(); 138 } 139 140 WindowsResourceParser::WindowsResourceParser(bool MinGW) 141 : Root(false), MinGW(MinGW) {} 142 143 void printResourceTypeName(uint16_t TypeID, raw_ostream &OS) { 144 switch (TypeID) { 145 case 1: OS << "CURSOR (ID 1)"; break; 146 case 2: OS << "BITMAP (ID 2)"; break; 147 case 3: OS << "ICON (ID 3)"; break; 148 case 4: OS << "MENU (ID 4)"; break; 149 case 5: OS << "DIALOG (ID 5)"; break; 150 case 6: OS << "STRINGTABLE (ID 6)"; break; 151 case 7: OS << "FONTDIR (ID 7)"; break; 152 case 8: OS << "FONT (ID 8)"; break; 153 case 9: OS << "ACCELERATOR (ID 9)"; break; 154 case 10: OS << "RCDATA (ID 10)"; break; 155 case 11: OS << "MESSAGETABLE (ID 11)"; break; 156 case 12: OS << "GROUP_CURSOR (ID 12)"; break; 157 case 14: OS << "GROUP_ICON (ID 14)"; break; 158 case 16: OS << "VERSIONINFO (ID 16)"; break; 159 case 17: OS << "DLGINCLUDE (ID 17)"; break; 160 case 19: OS << "PLUGPLAY (ID 19)"; break; 161 case 20: OS << "VXD (ID 20)"; break; 162 case 21: OS << "ANICURSOR (ID 21)"; break; 163 case 22: OS << "ANIICON (ID 22)"; break; 164 case 23: OS << "HTML (ID 23)"; break; 165 case 24: OS << "MANIFEST (ID 24)"; break; 166 default: OS << "ID " << TypeID; break; 167 } 168 } 169 170 static bool convertUTF16LEToUTF8String(ArrayRef<UTF16> Src, std::string &Out) { 171 if (!sys::IsBigEndianHost) 172 return convertUTF16ToUTF8String(Src, Out); 173 174 std::vector<UTF16> EndianCorrectedSrc; 175 EndianCorrectedSrc.resize(Src.size() + 1); 176 llvm::copy(Src, EndianCorrectedSrc.begin() + 1); 177 EndianCorrectedSrc[0] = UNI_UTF16_BYTE_ORDER_MARK_SWAPPED; 178 return convertUTF16ToUTF8String(makeArrayRef(EndianCorrectedSrc), Out); 179 } 180 181 static std::string makeDuplicateResourceError( 182 const ResourceEntryRef &Entry, StringRef File1, StringRef File2) { 183 std::string Ret; 184 raw_string_ostream OS(Ret); 185 186 OS << "duplicate resource:"; 187 188 OS << " type "; 189 if (Entry.checkTypeString()) { 190 std::string UTF8; 191 if (!convertUTF16LEToUTF8String(Entry.getTypeString(), UTF8)) 192 UTF8 = "(failed conversion from UTF16)"; 193 OS << '\"' << UTF8 << '\"'; 194 } else 195 printResourceTypeName(Entry.getTypeID(), OS); 196 197 OS << "/name "; 198 if (Entry.checkNameString()) { 199 std::string UTF8; 200 if (!convertUTF16LEToUTF8String(Entry.getNameString(), UTF8)) 201 UTF8 = "(failed conversion from UTF16)"; 202 OS << '\"' << UTF8 << '\"'; 203 } else { 204 OS << "ID " << Entry.getNameID(); 205 } 206 207 OS << "/language " << Entry.getLanguage() << ", in " << File1 << " and in " 208 << File2; 209 210 return OS.str(); 211 } 212 213 static void printStringOrID(const WindowsResourceParser::StringOrID &S, 214 raw_string_ostream &OS, bool IsType, bool IsID) { 215 if (S.IsString) { 216 std::string UTF8; 217 if (!convertUTF16LEToUTF8String(S.String, UTF8)) 218 UTF8 = "(failed conversion from UTF16)"; 219 OS << '\"' << UTF8 << '\"'; 220 } else if (IsType) 221 printResourceTypeName(S.ID, OS); 222 else if (IsID) 223 OS << "ID " << S.ID; 224 else 225 OS << S.ID; 226 } 227 228 static std::string makeDuplicateResourceError( 229 const std::vector<WindowsResourceParser::StringOrID> &Context, 230 StringRef File1, StringRef File2) { 231 std::string Ret; 232 raw_string_ostream OS(Ret); 233 234 OS << "duplicate resource:"; 235 236 if (Context.size() >= 1) { 237 OS << " type "; 238 printStringOrID(Context[0], OS, /* IsType */ true, /* IsID */ true); 239 } 240 241 if (Context.size() >= 2) { 242 OS << "/name "; 243 printStringOrID(Context[1], OS, /* IsType */ false, /* IsID */ true); 244 } 245 246 if (Context.size() >= 3) { 247 OS << "/language "; 248 printStringOrID(Context[2], OS, /* IsType */ false, /* IsID */ false); 249 } 250 OS << ", in " << File1 << " and in " << File2; 251 252 return OS.str(); 253 } 254 255 // MinGW specific. Remove default manifests (with language zero) if there are 256 // other manifests present, and report an error if there are more than one 257 // manifest with a non-zero language code. 258 // GCC has the concept of a default manifest resource object, which gets 259 // linked in implicitly if present. This default manifest has got language 260 // id zero, and should be dropped silently if there's another manifest present. 261 // If the user resources surprisignly had a manifest with language id zero, 262 // we should also ignore the duplicate default manifest. 263 void WindowsResourceParser::cleanUpManifests( 264 std::vector<std::string> &Duplicates) { 265 auto TypeIt = Root.IDChildren.find(/* RT_MANIFEST */ 24); 266 if (TypeIt == Root.IDChildren.end()) 267 return; 268 269 TreeNode *TypeNode = TypeIt->second.get(); 270 auto NameIt = 271 TypeNode->IDChildren.find(/* CREATEPROCESS_MANIFEST_RESOURCE_ID */ 1); 272 if (NameIt == TypeNode->IDChildren.end()) 273 return; 274 275 TreeNode *NameNode = NameIt->second.get(); 276 if (NameNode->IDChildren.size() <= 1) 277 return; // None or one manifest present, all good. 278 279 // If we have more than one manifest, drop the language zero one if present, 280 // and check again. 281 auto LangZeroIt = NameNode->IDChildren.find(0); 282 if (LangZeroIt != NameNode->IDChildren.end() && 283 LangZeroIt->second->IsDataNode) { 284 uint32_t RemovedIndex = LangZeroIt->second->DataIndex; 285 NameNode->IDChildren.erase(LangZeroIt); 286 Data.erase(Data.begin() + RemovedIndex); 287 Root.shiftDataIndexDown(RemovedIndex); 288 289 // If we're now down to one manifest, all is good. 290 if (NameNode->IDChildren.size() <= 1) 291 return; 292 } 293 294 // More than one non-language-zero manifest 295 auto FirstIt = NameNode->IDChildren.begin(); 296 uint32_t FirstLang = FirstIt->first; 297 TreeNode *FirstNode = FirstIt->second.get(); 298 auto LastIt = NameNode->IDChildren.rbegin(); 299 uint32_t LastLang = LastIt->first; 300 TreeNode *LastNode = LastIt->second.get(); 301 Duplicates.push_back( 302 ("duplicate non-default manifests with languages " + Twine(FirstLang) + 303 " in " + InputFilenames[FirstNode->Origin] + " and " + Twine(LastLang) + 304 " in " + InputFilenames[LastNode->Origin]) 305 .str()); 306 } 307 308 // Ignore duplicates of manifests with language zero (the default manifest), 309 // in case the user has provided a manifest with that language id. See 310 // the function comment above for context. Only returns true if MinGW is set 311 // to true. 312 bool WindowsResourceParser::shouldIgnoreDuplicate( 313 const ResourceEntryRef &Entry) const { 314 return MinGW && !Entry.checkTypeString() && 315 Entry.getTypeID() == /* RT_MANIFEST */ 24 && 316 !Entry.checkNameString() && 317 Entry.getNameID() == /* CREATEPROCESS_MANIFEST_RESOURCE_ID */ 1 && 318 Entry.getLanguage() == 0; 319 } 320 321 bool WindowsResourceParser::shouldIgnoreDuplicate( 322 const std::vector<StringOrID> &Context) const { 323 return MinGW && Context.size() == 3 && !Context[0].IsString && 324 Context[0].ID == /* RT_MANIFEST */ 24 && !Context[1].IsString && 325 Context[1].ID == /* CREATEPROCESS_MANIFEST_RESOURCE_ID */ 1 && 326 !Context[2].IsString && Context[2].ID == 0; 327 } 328 329 Error WindowsResourceParser::parse(WindowsResource *WR, 330 std::vector<std::string> &Duplicates) { 331 auto EntryOrErr = WR->getHeadEntry(); 332 if (!EntryOrErr) { 333 auto E = EntryOrErr.takeError(); 334 if (E.isA<EmptyResError>()) { 335 // Check if the .res file contains no entries. In this case we don't have 336 // to throw an error but can rather just return without parsing anything. 337 // This applies for files which have a valid PE header magic and the 338 // mandatory empty null resource entry. Files which do not fit this 339 // criteria would have already been filtered out by 340 // WindowsResource::createWindowsResource(). 341 consumeError(std::move(E)); 342 return Error::success(); 343 } 344 return E; 345 } 346 347 ResourceEntryRef Entry = EntryOrErr.get(); 348 uint32_t Origin = InputFilenames.size(); 349 InputFilenames.push_back(std::string(WR->getFileName())); 350 bool End = false; 351 while (!End) { 352 353 TreeNode *Node; 354 bool IsNewNode = Root.addEntry(Entry, Origin, Data, StringTable, Node); 355 if (!IsNewNode) { 356 if (!shouldIgnoreDuplicate(Entry)) 357 Duplicates.push_back(makeDuplicateResourceError( 358 Entry, InputFilenames[Node->Origin], WR->getFileName())); 359 } 360 361 RETURN_IF_ERROR(Entry.moveNext(End)); 362 } 363 364 return Error::success(); 365 } 366 367 Error WindowsResourceParser::parse(ResourceSectionRef &RSR, StringRef Filename, 368 std::vector<std::string> &Duplicates) { 369 UNWRAP_REF_OR_RETURN(BaseTable, RSR.getBaseTable()); 370 uint32_t Origin = InputFilenames.size(); 371 InputFilenames.push_back(std::string(Filename)); 372 std::vector<StringOrID> Context; 373 return addChildren(Root, RSR, BaseTable, Origin, Context, Duplicates); 374 } 375 376 void WindowsResourceParser::printTree(raw_ostream &OS) const { 377 ScopedPrinter Writer(OS); 378 Root.print(Writer, "Resource Tree"); 379 } 380 381 bool WindowsResourceParser::TreeNode::addEntry( 382 const ResourceEntryRef &Entry, uint32_t Origin, 383 std::vector<std::vector<uint8_t>> &Data, 384 std::vector<std::vector<UTF16>> &StringTable, TreeNode *&Result) { 385 TreeNode &TypeNode = addTypeNode(Entry, StringTable); 386 TreeNode &NameNode = TypeNode.addNameNode(Entry, StringTable); 387 return NameNode.addLanguageNode(Entry, Origin, Data, Result); 388 } 389 390 Error WindowsResourceParser::addChildren(TreeNode &Node, 391 ResourceSectionRef &RSR, 392 const coff_resource_dir_table &Table, 393 uint32_t Origin, 394 std::vector<StringOrID> &Context, 395 std::vector<std::string> &Duplicates) { 396 397 for (int i = 0; i < Table.NumberOfNameEntries + Table.NumberOfIDEntries; 398 i++) { 399 UNWRAP_REF_OR_RETURN(Entry, RSR.getTableEntry(Table, i)); 400 TreeNode *Child; 401 402 if (Entry.Offset.isSubDir()) { 403 404 // Create a new subdirectory and recurse 405 if (i < Table.NumberOfNameEntries) { 406 UNWRAP_OR_RETURN(NameString, RSR.getEntryNameString(Entry)); 407 Child = &Node.addNameChild(NameString, StringTable); 408 Context.push_back(StringOrID(NameString)); 409 } else { 410 Child = &Node.addIDChild(Entry.Identifier.ID); 411 Context.push_back(StringOrID(Entry.Identifier.ID)); 412 } 413 414 UNWRAP_REF_OR_RETURN(NextTable, RSR.getEntrySubDir(Entry)); 415 Error E = 416 addChildren(*Child, RSR, NextTable, Origin, Context, Duplicates); 417 if (E) 418 return E; 419 Context.pop_back(); 420 421 } else { 422 423 // Data leaves are supposed to have a numeric ID as identifier (language). 424 if (Table.NumberOfNameEntries > 0) 425 return createStringError(object_error::parse_failed, 426 "unexpected string key for data object"); 427 428 // Try adding a data leaf 429 UNWRAP_REF_OR_RETURN(DataEntry, RSR.getEntryData(Entry)); 430 TreeNode *Child; 431 Context.push_back(StringOrID(Entry.Identifier.ID)); 432 bool Added = Node.addDataChild(Entry.Identifier.ID, Table.MajorVersion, 433 Table.MinorVersion, Table.Characteristics, 434 Origin, Data.size(), Child); 435 if (Added) { 436 UNWRAP_OR_RETURN(Contents, RSR.getContents(DataEntry)); 437 Data.push_back(ArrayRef<uint8_t>( 438 reinterpret_cast<const uint8_t *>(Contents.data()), 439 Contents.size())); 440 } else { 441 if (!shouldIgnoreDuplicate(Context)) 442 Duplicates.push_back(makeDuplicateResourceError( 443 Context, InputFilenames[Child->Origin], InputFilenames.back())); 444 } 445 Context.pop_back(); 446 447 } 448 } 449 return Error::success(); 450 } 451 452 WindowsResourceParser::TreeNode::TreeNode(uint32_t StringIndex) 453 : StringIndex(StringIndex) {} 454 455 WindowsResourceParser::TreeNode::TreeNode(uint16_t MajorVersion, 456 uint16_t MinorVersion, 457 uint32_t Characteristics, 458 uint32_t Origin, uint32_t DataIndex) 459 : IsDataNode(true), DataIndex(DataIndex), MajorVersion(MajorVersion), 460 MinorVersion(MinorVersion), Characteristics(Characteristics), 461 Origin(Origin) {} 462 463 std::unique_ptr<WindowsResourceParser::TreeNode> 464 WindowsResourceParser::TreeNode::createStringNode(uint32_t Index) { 465 return std::unique_ptr<TreeNode>(new TreeNode(Index)); 466 } 467 468 std::unique_ptr<WindowsResourceParser::TreeNode> 469 WindowsResourceParser::TreeNode::createIDNode() { 470 return std::unique_ptr<TreeNode>(new TreeNode(0)); 471 } 472 473 std::unique_ptr<WindowsResourceParser::TreeNode> 474 WindowsResourceParser::TreeNode::createDataNode(uint16_t MajorVersion, 475 uint16_t MinorVersion, 476 uint32_t Characteristics, 477 uint32_t Origin, 478 uint32_t DataIndex) { 479 return std::unique_ptr<TreeNode>(new TreeNode( 480 MajorVersion, MinorVersion, Characteristics, Origin, DataIndex)); 481 } 482 483 WindowsResourceParser::TreeNode &WindowsResourceParser::TreeNode::addTypeNode( 484 const ResourceEntryRef &Entry, 485 std::vector<std::vector<UTF16>> &StringTable) { 486 if (Entry.checkTypeString()) 487 return addNameChild(Entry.getTypeString(), StringTable); 488 else 489 return addIDChild(Entry.getTypeID()); 490 } 491 492 WindowsResourceParser::TreeNode &WindowsResourceParser::TreeNode::addNameNode( 493 const ResourceEntryRef &Entry, 494 std::vector<std::vector<UTF16>> &StringTable) { 495 if (Entry.checkNameString()) 496 return addNameChild(Entry.getNameString(), StringTable); 497 else 498 return addIDChild(Entry.getNameID()); 499 } 500 501 bool WindowsResourceParser::TreeNode::addLanguageNode( 502 const ResourceEntryRef &Entry, uint32_t Origin, 503 std::vector<std::vector<uint8_t>> &Data, TreeNode *&Result) { 504 bool Added = addDataChild(Entry.getLanguage(), Entry.getMajorVersion(), 505 Entry.getMinorVersion(), Entry.getCharacteristics(), 506 Origin, Data.size(), Result); 507 if (Added) 508 Data.push_back(Entry.getData()); 509 return Added; 510 } 511 512 bool WindowsResourceParser::TreeNode::addDataChild( 513 uint32_t ID, uint16_t MajorVersion, uint16_t MinorVersion, 514 uint32_t Characteristics, uint32_t Origin, uint32_t DataIndex, 515 TreeNode *&Result) { 516 auto NewChild = createDataNode(MajorVersion, MinorVersion, Characteristics, 517 Origin, DataIndex); 518 auto ElementInserted = IDChildren.emplace(ID, std::move(NewChild)); 519 Result = ElementInserted.first->second.get(); 520 return ElementInserted.second; 521 } 522 523 WindowsResourceParser::TreeNode &WindowsResourceParser::TreeNode::addIDChild( 524 uint32_t ID) { 525 auto Child = IDChildren.find(ID); 526 if (Child == IDChildren.end()) { 527 auto NewChild = createIDNode(); 528 WindowsResourceParser::TreeNode &Node = *NewChild; 529 IDChildren.emplace(ID, std::move(NewChild)); 530 return Node; 531 } else 532 return *(Child->second); 533 } 534 535 WindowsResourceParser::TreeNode &WindowsResourceParser::TreeNode::addNameChild( 536 ArrayRef<UTF16> NameRef, std::vector<std::vector<UTF16>> &StringTable) { 537 std::string NameString; 538 convertUTF16LEToUTF8String(NameRef, NameString); 539 540 auto Child = StringChildren.find(NameString); 541 if (Child == StringChildren.end()) { 542 auto NewChild = createStringNode(StringTable.size()); 543 StringTable.push_back(NameRef); 544 WindowsResourceParser::TreeNode &Node = *NewChild; 545 StringChildren.emplace(NameString, std::move(NewChild)); 546 return Node; 547 } else 548 return *(Child->second); 549 } 550 551 void WindowsResourceParser::TreeNode::print(ScopedPrinter &Writer, 552 StringRef Name) const { 553 ListScope NodeScope(Writer, Name); 554 for (auto const &Child : StringChildren) { 555 Child.second->print(Writer, Child.first); 556 } 557 for (auto const &Child : IDChildren) { 558 Child.second->print(Writer, to_string(Child.first)); 559 } 560 } 561 562 // This function returns the size of the entire resource tree, including 563 // directory tables, directory entries, and data entries. It does not include 564 // the directory strings or the relocations of the .rsrc section. 565 uint32_t WindowsResourceParser::TreeNode::getTreeSize() const { 566 uint32_t Size = (IDChildren.size() + StringChildren.size()) * 567 sizeof(coff_resource_dir_entry); 568 569 // Reached a node pointing to a data entry. 570 if (IsDataNode) { 571 Size += sizeof(coff_resource_data_entry); 572 return Size; 573 } 574 575 // If the node does not point to data, it must have a directory table pointing 576 // to other nodes. 577 Size += sizeof(coff_resource_dir_table); 578 579 for (auto const &Child : StringChildren) { 580 Size += Child.second->getTreeSize(); 581 } 582 for (auto const &Child : IDChildren) { 583 Size += Child.second->getTreeSize(); 584 } 585 return Size; 586 } 587 588 // Shift DataIndex of all data children with an Index greater or equal to the 589 // given one, to fill a gap from removing an entry from the Data vector. 590 void WindowsResourceParser::TreeNode::shiftDataIndexDown(uint32_t Index) { 591 if (IsDataNode && DataIndex >= Index) { 592 DataIndex--; 593 } else { 594 for (auto &Child : IDChildren) 595 Child.second->shiftDataIndexDown(Index); 596 for (auto &Child : StringChildren) 597 Child.second->shiftDataIndexDown(Index); 598 } 599 } 600 601 class WindowsResourceCOFFWriter { 602 public: 603 WindowsResourceCOFFWriter(COFF::MachineTypes MachineType, 604 const WindowsResourceParser &Parser, Error &E); 605 std::unique_ptr<MemoryBuffer> write(uint32_t TimeDateStamp); 606 607 private: 608 void performFileLayout(); 609 void performSectionOneLayout(); 610 void performSectionTwoLayout(); 611 void writeCOFFHeader(uint32_t TimeDateStamp); 612 void writeFirstSectionHeader(); 613 void writeSecondSectionHeader(); 614 void writeFirstSection(); 615 void writeSecondSection(); 616 void writeSymbolTable(); 617 void writeStringTable(); 618 void writeDirectoryTree(); 619 void writeDirectoryStringTable(); 620 void writeFirstSectionRelocations(); 621 std::unique_ptr<WritableMemoryBuffer> OutputBuffer; 622 char *BufferStart; 623 uint64_t CurrentOffset = 0; 624 COFF::MachineTypes MachineType; 625 const WindowsResourceParser::TreeNode &Resources; 626 const ArrayRef<std::vector<uint8_t>> Data; 627 uint64_t FileSize; 628 uint32_t SymbolTableOffset; 629 uint32_t SectionOneSize; 630 uint32_t SectionOneOffset; 631 uint32_t SectionOneRelocations; 632 uint32_t SectionTwoSize; 633 uint32_t SectionTwoOffset; 634 const ArrayRef<std::vector<UTF16>> StringTable; 635 std::vector<uint32_t> StringTableOffsets; 636 std::vector<uint32_t> DataOffsets; 637 std::vector<uint32_t> RelocationAddresses; 638 }; 639 640 WindowsResourceCOFFWriter::WindowsResourceCOFFWriter( 641 COFF::MachineTypes MachineType, const WindowsResourceParser &Parser, 642 Error &E) 643 : MachineType(MachineType), Resources(Parser.getTree()), 644 Data(Parser.getData()), StringTable(Parser.getStringTable()) { 645 performFileLayout(); 646 647 OutputBuffer = WritableMemoryBuffer::getNewMemBuffer( 648 FileSize, "internal .obj file created from .res files"); 649 } 650 651 void WindowsResourceCOFFWriter::performFileLayout() { 652 // Add size of COFF header. 653 FileSize = COFF::Header16Size; 654 655 // one .rsrc section header for directory tree, another for resource data. 656 FileSize += 2 * COFF::SectionSize; 657 658 performSectionOneLayout(); 659 performSectionTwoLayout(); 660 661 // We have reached the address of the symbol table. 662 SymbolTableOffset = FileSize; 663 664 FileSize += COFF::Symbol16Size; // size of the @feat.00 symbol. 665 FileSize += 4 * COFF::Symbol16Size; // symbol + aux for each section. 666 FileSize += Data.size() * COFF::Symbol16Size; // 1 symbol per resource. 667 FileSize += 4; // four null bytes for the string table. 668 } 669 670 void WindowsResourceCOFFWriter::performSectionOneLayout() { 671 SectionOneOffset = FileSize; 672 673 SectionOneSize = Resources.getTreeSize(); 674 uint32_t CurrentStringOffset = SectionOneSize; 675 uint32_t TotalStringTableSize = 0; 676 for (auto const &String : StringTable) { 677 StringTableOffsets.push_back(CurrentStringOffset); 678 uint32_t StringSize = String.size() * sizeof(UTF16) + sizeof(uint16_t); 679 CurrentStringOffset += StringSize; 680 TotalStringTableSize += StringSize; 681 } 682 SectionOneSize += alignTo(TotalStringTableSize, sizeof(uint32_t)); 683 684 // account for the relocations of section one. 685 SectionOneRelocations = FileSize + SectionOneSize; 686 FileSize += SectionOneSize; 687 FileSize += 688 Data.size() * COFF::RelocationSize; // one relocation for each resource. 689 FileSize = alignTo(FileSize, SECTION_ALIGNMENT); 690 } 691 692 void WindowsResourceCOFFWriter::performSectionTwoLayout() { 693 // add size of .rsrc$2 section, which contains all resource data on 8-byte 694 // alignment. 695 SectionTwoOffset = FileSize; 696 SectionTwoSize = 0; 697 for (auto const &Entry : Data) { 698 DataOffsets.push_back(SectionTwoSize); 699 SectionTwoSize += alignTo(Entry.size(), sizeof(uint64_t)); 700 } 701 FileSize += SectionTwoSize; 702 FileSize = alignTo(FileSize, SECTION_ALIGNMENT); 703 } 704 705 std::unique_ptr<MemoryBuffer> 706 WindowsResourceCOFFWriter::write(uint32_t TimeDateStamp) { 707 BufferStart = OutputBuffer->getBufferStart(); 708 709 writeCOFFHeader(TimeDateStamp); 710 writeFirstSectionHeader(); 711 writeSecondSectionHeader(); 712 writeFirstSection(); 713 writeSecondSection(); 714 writeSymbolTable(); 715 writeStringTable(); 716 717 return std::move(OutputBuffer); 718 } 719 720 // According to COFF specification, if the Src has a size equal to Dest, 721 // it's okay to *not* copy the trailing zero. 722 static void coffnamecpy(char (&Dest)[COFF::NameSize], StringRef Src) { 723 assert(Src.size() <= COFF::NameSize && 724 "Src is larger than COFF::NameSize"); 725 assert((Src.size() == COFF::NameSize || Dest[Src.size()] == '\0') && 726 "Dest not zeroed upon initialization"); 727 memcpy(Dest, Src.data(), Src.size()); 728 } 729 730 void WindowsResourceCOFFWriter::writeCOFFHeader(uint32_t TimeDateStamp) { 731 // Write the COFF header. 732 auto *Header = reinterpret_cast<coff_file_header *>(BufferStart); 733 Header->Machine = MachineType; 734 Header->NumberOfSections = 2; 735 Header->TimeDateStamp = TimeDateStamp; 736 Header->PointerToSymbolTable = SymbolTableOffset; 737 // One symbol for every resource plus 2 for each section and 1 for @feat.00 738 Header->NumberOfSymbols = Data.size() + 5; 739 Header->SizeOfOptionalHeader = 0; 740 // cvtres.exe sets 32BIT_MACHINE even for 64-bit machine types. Match it. 741 Header->Characteristics = COFF::IMAGE_FILE_32BIT_MACHINE; 742 } 743 744 void WindowsResourceCOFFWriter::writeFirstSectionHeader() { 745 // Write the first section header. 746 CurrentOffset += sizeof(coff_file_header); 747 auto *SectionOneHeader = 748 reinterpret_cast<coff_section *>(BufferStart + CurrentOffset); 749 coffnamecpy(SectionOneHeader->Name, ".rsrc$01"); 750 SectionOneHeader->VirtualSize = 0; 751 SectionOneHeader->VirtualAddress = 0; 752 SectionOneHeader->SizeOfRawData = SectionOneSize; 753 SectionOneHeader->PointerToRawData = SectionOneOffset; 754 SectionOneHeader->PointerToRelocations = SectionOneRelocations; 755 SectionOneHeader->PointerToLinenumbers = 0; 756 SectionOneHeader->NumberOfRelocations = Data.size(); 757 SectionOneHeader->NumberOfLinenumbers = 0; 758 SectionOneHeader->Characteristics += COFF::IMAGE_SCN_CNT_INITIALIZED_DATA; 759 SectionOneHeader->Characteristics += COFF::IMAGE_SCN_MEM_READ; 760 } 761 762 void WindowsResourceCOFFWriter::writeSecondSectionHeader() { 763 // Write the second section header. 764 CurrentOffset += sizeof(coff_section); 765 auto *SectionTwoHeader = 766 reinterpret_cast<coff_section *>(BufferStart + CurrentOffset); 767 coffnamecpy(SectionTwoHeader->Name, ".rsrc$02"); 768 SectionTwoHeader->VirtualSize = 0; 769 SectionTwoHeader->VirtualAddress = 0; 770 SectionTwoHeader->SizeOfRawData = SectionTwoSize; 771 SectionTwoHeader->PointerToRawData = SectionTwoOffset; 772 SectionTwoHeader->PointerToRelocations = 0; 773 SectionTwoHeader->PointerToLinenumbers = 0; 774 SectionTwoHeader->NumberOfRelocations = 0; 775 SectionTwoHeader->NumberOfLinenumbers = 0; 776 SectionTwoHeader->Characteristics = COFF::IMAGE_SCN_CNT_INITIALIZED_DATA; 777 SectionTwoHeader->Characteristics += COFF::IMAGE_SCN_MEM_READ; 778 } 779 780 void WindowsResourceCOFFWriter::writeFirstSection() { 781 // Write section one. 782 CurrentOffset += sizeof(coff_section); 783 784 writeDirectoryTree(); 785 writeDirectoryStringTable(); 786 writeFirstSectionRelocations(); 787 788 CurrentOffset = alignTo(CurrentOffset, SECTION_ALIGNMENT); 789 } 790 791 void WindowsResourceCOFFWriter::writeSecondSection() { 792 // Now write the .rsrc$02 section. 793 for (auto const &RawDataEntry : Data) { 794 llvm::copy(RawDataEntry, BufferStart + CurrentOffset); 795 CurrentOffset += alignTo(RawDataEntry.size(), sizeof(uint64_t)); 796 } 797 798 CurrentOffset = alignTo(CurrentOffset, SECTION_ALIGNMENT); 799 } 800 801 void WindowsResourceCOFFWriter::writeSymbolTable() { 802 // Now write the symbol table. 803 // First, the feat symbol. 804 auto *Symbol = reinterpret_cast<coff_symbol16 *>(BufferStart + CurrentOffset); 805 coffnamecpy(Symbol->Name.ShortName, "@feat.00"); 806 Symbol->Value = 0x11; 807 Symbol->SectionNumber = 0xffff; 808 Symbol->Type = COFF::IMAGE_SYM_DTYPE_NULL; 809 Symbol->StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 810 Symbol->NumberOfAuxSymbols = 0; 811 CurrentOffset += sizeof(coff_symbol16); 812 813 // Now write the .rsrc1 symbol + aux. 814 Symbol = reinterpret_cast<coff_symbol16 *>(BufferStart + CurrentOffset); 815 coffnamecpy(Symbol->Name.ShortName, ".rsrc$01"); 816 Symbol->Value = 0; 817 Symbol->SectionNumber = 1; 818 Symbol->Type = COFF::IMAGE_SYM_DTYPE_NULL; 819 Symbol->StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 820 Symbol->NumberOfAuxSymbols = 1; 821 CurrentOffset += sizeof(coff_symbol16); 822 auto *Aux = reinterpret_cast<coff_aux_section_definition *>(BufferStart + 823 CurrentOffset); 824 Aux->Length = SectionOneSize; 825 Aux->NumberOfRelocations = Data.size(); 826 Aux->NumberOfLinenumbers = 0; 827 Aux->CheckSum = 0; 828 Aux->NumberLowPart = 0; 829 Aux->Selection = 0; 830 CurrentOffset += sizeof(coff_aux_section_definition); 831 832 // Now write the .rsrc2 symbol + aux. 833 Symbol = reinterpret_cast<coff_symbol16 *>(BufferStart + CurrentOffset); 834 coffnamecpy(Symbol->Name.ShortName, ".rsrc$02"); 835 Symbol->Value = 0; 836 Symbol->SectionNumber = 2; 837 Symbol->Type = COFF::IMAGE_SYM_DTYPE_NULL; 838 Symbol->StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 839 Symbol->NumberOfAuxSymbols = 1; 840 CurrentOffset += sizeof(coff_symbol16); 841 Aux = reinterpret_cast<coff_aux_section_definition *>(BufferStart + 842 CurrentOffset); 843 Aux->Length = SectionTwoSize; 844 Aux->NumberOfRelocations = 0; 845 Aux->NumberOfLinenumbers = 0; 846 Aux->CheckSum = 0; 847 Aux->NumberLowPart = 0; 848 Aux->Selection = 0; 849 CurrentOffset += sizeof(coff_aux_section_definition); 850 851 // Now write a symbol for each relocation. 852 for (unsigned i = 0; i < Data.size(); i++) { 853 auto RelocationName = formatv("$R{0:X-6}", i & 0xffffff).sstr<COFF::NameSize>(); 854 Symbol = reinterpret_cast<coff_symbol16 *>(BufferStart + CurrentOffset); 855 coffnamecpy(Symbol->Name.ShortName, RelocationName); 856 Symbol->Value = DataOffsets[i]; 857 Symbol->SectionNumber = 2; 858 Symbol->Type = COFF::IMAGE_SYM_DTYPE_NULL; 859 Symbol->StorageClass = COFF::IMAGE_SYM_CLASS_STATIC; 860 Symbol->NumberOfAuxSymbols = 0; 861 CurrentOffset += sizeof(coff_symbol16); 862 } 863 } 864 865 void WindowsResourceCOFFWriter::writeStringTable() { 866 // Just 4 null bytes for the string table. 867 auto COFFStringTable = reinterpret_cast<void *>(BufferStart + CurrentOffset); 868 memset(COFFStringTable, 0, 4); 869 } 870 871 void WindowsResourceCOFFWriter::writeDirectoryTree() { 872 // Traverse parsed resource tree breadth-first and write the corresponding 873 // COFF objects. 874 std::queue<const WindowsResourceParser::TreeNode *> Queue; 875 Queue.push(&Resources); 876 uint32_t NextLevelOffset = 877 sizeof(coff_resource_dir_table) + (Resources.getStringChildren().size() + 878 Resources.getIDChildren().size()) * 879 sizeof(coff_resource_dir_entry); 880 std::vector<const WindowsResourceParser::TreeNode *> DataEntriesTreeOrder; 881 uint32_t CurrentRelativeOffset = 0; 882 883 while (!Queue.empty()) { 884 auto CurrentNode = Queue.front(); 885 Queue.pop(); 886 auto *Table = reinterpret_cast<coff_resource_dir_table *>(BufferStart + 887 CurrentOffset); 888 Table->Characteristics = CurrentNode->getCharacteristics(); 889 Table->TimeDateStamp = 0; 890 Table->MajorVersion = CurrentNode->getMajorVersion(); 891 Table->MinorVersion = CurrentNode->getMinorVersion(); 892 auto &IDChildren = CurrentNode->getIDChildren(); 893 auto &StringChildren = CurrentNode->getStringChildren(); 894 Table->NumberOfNameEntries = StringChildren.size(); 895 Table->NumberOfIDEntries = IDChildren.size(); 896 CurrentOffset += sizeof(coff_resource_dir_table); 897 CurrentRelativeOffset += sizeof(coff_resource_dir_table); 898 899 // Write the directory entries immediately following each directory table. 900 for (auto const &Child : StringChildren) { 901 auto *Entry = reinterpret_cast<coff_resource_dir_entry *>(BufferStart + 902 CurrentOffset); 903 Entry->Identifier.setNameOffset( 904 StringTableOffsets[Child.second->getStringIndex()]); 905 if (Child.second->checkIsDataNode()) { 906 Entry->Offset.DataEntryOffset = NextLevelOffset; 907 NextLevelOffset += sizeof(coff_resource_data_entry); 908 DataEntriesTreeOrder.push_back(Child.second.get()); 909 } else { 910 Entry->Offset.SubdirOffset = NextLevelOffset + (1 << 31); 911 NextLevelOffset += sizeof(coff_resource_dir_table) + 912 (Child.second->getStringChildren().size() + 913 Child.second->getIDChildren().size()) * 914 sizeof(coff_resource_dir_entry); 915 Queue.push(Child.second.get()); 916 } 917 CurrentOffset += sizeof(coff_resource_dir_entry); 918 CurrentRelativeOffset += sizeof(coff_resource_dir_entry); 919 } 920 for (auto const &Child : IDChildren) { 921 auto *Entry = reinterpret_cast<coff_resource_dir_entry *>(BufferStart + 922 CurrentOffset); 923 Entry->Identifier.ID = Child.first; 924 if (Child.second->checkIsDataNode()) { 925 Entry->Offset.DataEntryOffset = NextLevelOffset; 926 NextLevelOffset += sizeof(coff_resource_data_entry); 927 DataEntriesTreeOrder.push_back(Child.second.get()); 928 } else { 929 Entry->Offset.SubdirOffset = NextLevelOffset + (1 << 31); 930 NextLevelOffset += sizeof(coff_resource_dir_table) + 931 (Child.second->getStringChildren().size() + 932 Child.second->getIDChildren().size()) * 933 sizeof(coff_resource_dir_entry); 934 Queue.push(Child.second.get()); 935 } 936 CurrentOffset += sizeof(coff_resource_dir_entry); 937 CurrentRelativeOffset += sizeof(coff_resource_dir_entry); 938 } 939 } 940 941 RelocationAddresses.resize(Data.size()); 942 // Now write all the resource data entries. 943 for (auto DataNodes : DataEntriesTreeOrder) { 944 auto *Entry = reinterpret_cast<coff_resource_data_entry *>(BufferStart + 945 CurrentOffset); 946 RelocationAddresses[DataNodes->getDataIndex()] = CurrentRelativeOffset; 947 Entry->DataRVA = 0; // Set to zero because it is a relocation. 948 Entry->DataSize = Data[DataNodes->getDataIndex()].size(); 949 Entry->Codepage = 0; 950 Entry->Reserved = 0; 951 CurrentOffset += sizeof(coff_resource_data_entry); 952 CurrentRelativeOffset += sizeof(coff_resource_data_entry); 953 } 954 } 955 956 void WindowsResourceCOFFWriter::writeDirectoryStringTable() { 957 // Now write the directory string table for .rsrc$01 958 uint32_t TotalStringTableSize = 0; 959 for (auto &String : StringTable) { 960 uint16_t Length = String.size(); 961 support::endian::write16le(BufferStart + CurrentOffset, Length); 962 CurrentOffset += sizeof(uint16_t); 963 auto *Start = reinterpret_cast<UTF16 *>(BufferStart + CurrentOffset); 964 llvm::copy(String, Start); 965 CurrentOffset += Length * sizeof(UTF16); 966 TotalStringTableSize += Length * sizeof(UTF16) + sizeof(uint16_t); 967 } 968 CurrentOffset += 969 alignTo(TotalStringTableSize, sizeof(uint32_t)) - TotalStringTableSize; 970 } 971 972 void WindowsResourceCOFFWriter::writeFirstSectionRelocations() { 973 974 // Now write the relocations for .rsrc$01 975 // Five symbols already in table before we start, @feat.00 and 2 for each 976 // .rsrc section. 977 uint32_t NextSymbolIndex = 5; 978 for (unsigned i = 0; i < Data.size(); i++) { 979 auto *Reloc = 980 reinterpret_cast<coff_relocation *>(BufferStart + CurrentOffset); 981 Reloc->VirtualAddress = RelocationAddresses[i]; 982 Reloc->SymbolTableIndex = NextSymbolIndex++; 983 switch (MachineType) { 984 case COFF::IMAGE_FILE_MACHINE_ARMNT: 985 Reloc->Type = COFF::IMAGE_REL_ARM_ADDR32NB; 986 break; 987 case COFF::IMAGE_FILE_MACHINE_AMD64: 988 Reloc->Type = COFF::IMAGE_REL_AMD64_ADDR32NB; 989 break; 990 case COFF::IMAGE_FILE_MACHINE_I386: 991 Reloc->Type = COFF::IMAGE_REL_I386_DIR32NB; 992 break; 993 case COFF::IMAGE_FILE_MACHINE_ARM64: 994 Reloc->Type = COFF::IMAGE_REL_ARM64_ADDR32NB; 995 break; 996 default: 997 llvm_unreachable("unknown machine type"); 998 } 999 CurrentOffset += sizeof(coff_relocation); 1000 } 1001 } 1002 1003 Expected<std::unique_ptr<MemoryBuffer>> 1004 writeWindowsResourceCOFF(COFF::MachineTypes MachineType, 1005 const WindowsResourceParser &Parser, 1006 uint32_t TimeDateStamp) { 1007 Error E = Error::success(); 1008 WindowsResourceCOFFWriter Writer(MachineType, Parser, E); 1009 if (E) 1010 return std::move(E); 1011 return Writer.write(TimeDateStamp); 1012 } 1013 1014 } // namespace object 1015 } // namespace llvm 1016