1 //===-- WindowsResourceDumper.cpp - Windows Resource printer --------------===//
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 Windows resource (.res) dumper for llvm-readobj.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "WindowsResourceDumper.h"
14 #include "llvm/Object/WindowsResource.h"
15 #include "llvm/Support/ConvertUTF.h"
16 #include "llvm/Support/ScopedPrinter.h"
17 
18 namespace llvm {
19 namespace object {
20 namespace WindowsRes {
21 
22 std::string stripUTF16(const ArrayRef<UTF16> &UTF16Str) {
23   std::string Result;
24   Result.reserve(UTF16Str.size());
25 
26   for (UTF16 Ch : UTF16Str) {
27     // UTF16Str will have swapped byte order in case of big-endian machines.
28     // Swap it back in such a case.
29     uint16_t ChValue = support::endian::byte_swap(Ch, support::little);
30     if (ChValue <= 0xFF)
31       Result += ChValue;
32     else
33       Result += '?';
34   }
35   return Result;
36 }
37 
38 Error Dumper::printData() {
39   auto EntryPtrOrErr = WinRes->getHeadEntry();
40   if (!EntryPtrOrErr)
41     return EntryPtrOrErr.takeError();
42   auto EntryPtr = *EntryPtrOrErr;
43 
44   bool IsEnd = false;
45   while (!IsEnd) {
46     printEntry(EntryPtr);
47 
48     if (auto Err = EntryPtr.moveNext(IsEnd))
49       return Err;
50   }
51   return Error::success();
52 }
53 
54 void Dumper::printEntry(const ResourceEntryRef &Ref) {
55   if (Ref.checkTypeString()) {
56     auto NarrowStr = stripUTF16(Ref.getTypeString());
57     SW.printString("Resource type (string)", NarrowStr);
58   } else {
59     SmallString<20> IDStr;
60     raw_svector_ostream OS(IDStr);
61     printResourceTypeName(Ref.getTypeID(), OS);
62     SW.printString("Resource type (int)", IDStr);
63   }
64 
65   if (Ref.checkNameString()) {
66     auto NarrowStr = stripUTF16(Ref.getNameString());
67     SW.printString("Resource name (string)", NarrowStr);
68   } else
69     SW.printNumber("Resource name (int)", Ref.getNameID());
70 
71   SW.printNumber("Data version", Ref.getDataVersion());
72   SW.printHex("Memory flags", Ref.getMemoryFlags());
73   SW.printNumber("Language ID", Ref.getLanguage());
74   SW.printNumber("Version (major)", Ref.getMajorVersion());
75   SW.printNumber("Version (minor)", Ref.getMinorVersion());
76   SW.printNumber("Characteristics", Ref.getCharacteristics());
77   SW.printNumber("Data size", (uint64_t)Ref.getData().size());
78   SW.printBinary("Data:", Ref.getData());
79   SW.startLine() << "\n";
80 }
81 
82 } // namespace WindowsRes
83 } // namespace object
84 } // namespace llvm
85