reference, declarationdefinition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced
    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122
  123
  124
  125
  126
  127
  128
  129
  130
  131
  132
  133
  134
  135
  136
  137
  138
  139
  140
  141
  142
  143
  144
  145
  146
  147
  148
  149
  150
  151
  152
  153
  154
  155
  156
  157
  158
  159
  160
  161
  162
  163
  164
  165
  166
  167
  168
  169
  170
  171
  172
  173
  174
  175
  176
  177
  178
  179
  180
  181
  182
  183
  184
  185
  186
  187
  188
  189
  190
  191
  192
  193
  194
  195
  196
  197
  198
  199
  200
  201
  202
  203
  204
  205
  206
  207
  208
  209
  210
  211
  212
  213
  214
  215
  216
  217
  218
  219
  220
  221
  222
  223
  224
  225
  226
  227
  228
  229
  230
  231
  232
  233
  234
  235
  236
  237
  238
  239
  240
  241
  242
  243
  244
  245
  246
  247
  248
  249
  250
  251
  252
  253
  254
  255
  256
  257
  258
  259
  260
  261
  262
  263
  264
  265
  266
  267
  268
  269
  270
  271
//===-- WindowsResource.h ---------------------------------------*- C++-*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===---------------------------------------------------------------------===//
//
// This file declares the .res file class.  .res files are intermediate
// products of the typical resource-compilation process on Windows.  This
// process is as follows:
//
// .rc file(s) ---(rc.exe)---> .res file(s) ---(cvtres.exe)---> COFF file
//
// .rc files are human-readable scripts that list all resources a program uses.
//
// They are compiled into .res files, which are a list of the resources in
// binary form.
//
// Finally the data stored in the .res is compiled into a COFF file, where it
// is organized in a directory tree structure for optimized access by the
// program during runtime.
//
// Ref: msdn.microsoft.com/en-us/library/windows/desktop/ms648007(v=vs.85).aspx
//
//===---------------------------------------------------------------------===//

#ifndef LLVM_INCLUDE_LLVM_OBJECT_RESFILE_H
#define LLVM_INCLUDE_LLVM_OBJECT_RESFILE_H

#include "llvm/ADT/ArrayRef.h"
#include "llvm/BinaryFormat/COFF.h"
#include "llvm/Object/Binary.h"
#include "llvm/Object/COFF.h"
#include "llvm/Object/Error.h"
#include "llvm/Support/BinaryByteStream.h"
#include "llvm/Support/BinaryStreamReader.h"
#include "llvm/Support/ConvertUTF.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"

#include <map>

namespace llvm {

class raw_ostream;
class ScopedPrinter;

namespace object {

class WindowsResource;
class ResourceSectionRef;

const size_t WIN_RES_MAGIC_SIZE = 16;
const size_t WIN_RES_NULL_ENTRY_SIZE = 16;
const uint32_t WIN_RES_HEADER_ALIGNMENT = 4;
const uint32_t WIN_RES_DATA_ALIGNMENT = 4;
const uint16_t WIN_RES_PURE_MOVEABLE = 0x0030;

struct WinResHeaderPrefix {
  support::ulittle32_t DataSize;
  support::ulittle32_t HeaderSize;
};

// Type and Name may each either be an integer ID or a string.  This struct is
// only used in the case where they are both IDs.
struct WinResIDs {
  uint16_t TypeFlag;
  support::ulittle16_t TypeID;
  uint16_t NameFlag;
  support::ulittle16_t NameID;

  void setType(uint16_t ID) {
    TypeFlag = 0xffff;
    TypeID = ID;
  }

  void setName(uint16_t ID) {
    NameFlag = 0xffff;
    NameID = ID;
  }
};

struct WinResHeaderSuffix {
  support::ulittle32_t DataVersion;
  support::ulittle16_t MemoryFlags;
  support::ulittle16_t Language;
  support::ulittle32_t Version;
  support::ulittle32_t Characteristics;
};

class EmptyResError : public GenericBinaryError {
public:
  EmptyResError(Twine Msg, object_error ECOverride)
      : GenericBinaryError(Msg, ECOverride) {}
};

class ResourceEntryRef {
public:
  Error moveNext(bool &End);
  bool checkTypeString() const { return IsStringType; }
  ArrayRef<UTF16> getTypeString() const { return Type; }
  uint16_t getTypeID() const { return TypeID; }
  bool checkNameString() const { return IsStringName; }
  ArrayRef<UTF16> getNameString() const { return Name; }
  uint16_t getNameID() const { return NameID; }
  uint16_t getDataVersion() const { return Suffix->DataVersion; }
  uint16_t getLanguage() const { return Suffix->Language; }
  uint16_t getMemoryFlags() const { return Suffix->MemoryFlags; }
  uint16_t getMajorVersion() const { return Suffix->Version >> 16; }
  uint16_t getMinorVersion() const { return Suffix->Version; }
  uint32_t getCharacteristics() const { return Suffix->Characteristics; }
  ArrayRef<uint8_t> getData() const { return Data; }

private:
  friend class WindowsResource;

  ResourceEntryRef(BinaryStreamRef Ref, const WindowsResource *Owner);
  Error loadNext();

  static Expected<ResourceEntryRef> create(BinaryStreamRef Ref,
                                           const WindowsResource *Owner);

  BinaryStreamReader Reader;
  const WindowsResource *Owner;
  bool IsStringType;
  ArrayRef<UTF16> Type;
  uint16_t TypeID;
  bool IsStringName;
  ArrayRef<UTF16> Name;
  uint16_t NameID;
  const WinResHeaderSuffix *Suffix = nullptr;
  ArrayRef<uint8_t> Data;
};

class WindowsResource : public Binary {
public:
  Expected<ResourceEntryRef> getHeadEntry();

  static bool classof(const Binary *V) { return V->isWinRes(); }

  static Expected<std::unique_ptr<WindowsResource>>
  createWindowsResource(MemoryBufferRef Source);

private:
  friend class ResourceEntryRef;

  WindowsResource(MemoryBufferRef Source);

  BinaryByteStream BBS;
};

class WindowsResourceParser {
public:
  class TreeNode;
  WindowsResourceParser(bool MinGW = false);
  Error parse(WindowsResource *WR, std::vector<std::string> &Duplicates);
  Error parse(ResourceSectionRef &RSR, StringRef Filename,
              std::vector<std::string> &Duplicates);
  void cleanUpManifests(std::vector<std::string> &Duplicates);
  void printTree(raw_ostream &OS) const;
  const TreeNode &getTree() const { return Root; }
  const ArrayRef<std::vector<uint8_t>> getData() const { return Data; }
  const ArrayRef<std::vector<UTF16>> getStringTable() const {
    return StringTable;
  }

  class TreeNode {
  public:
    template <typename T>
    using Children = std::map<T, std::unique_ptr<TreeNode>>;

    void print(ScopedPrinter &Writer, StringRef Name) const;
    uint32_t getTreeSize() const;
    uint32_t getStringIndex() const { return StringIndex; }
    uint32_t getDataIndex() const { return DataIndex; }
    uint16_t getMajorVersion() const { return MajorVersion; }
    uint16_t getMinorVersion() const { return MinorVersion; }
    uint32_t getCharacteristics() const { return Characteristics; }
    bool checkIsDataNode() const { return IsDataNode; }
    const Children<uint32_t> &getIDChildren() const { return IDChildren; }
    const Children<std::string> &getStringChildren() const {
      return StringChildren;
    }

  private:
    friend class WindowsResourceParser;

    // Index is the StringTable vector index for this node's name.
    static std::unique_ptr<TreeNode> createStringNode(uint32_t Index);
    static std::unique_ptr<TreeNode> createIDNode();
    // DataIndex is the Data vector index that the data node points at.
    static std::unique_ptr<TreeNode> createDataNode(uint16_t MajorVersion,
                                                    uint16_t MinorVersion,
                                                    uint32_t Characteristics,
                                                    uint32_t Origin,
                                                    uint32_t DataIndex);

    explicit TreeNode(uint32_t StringIndex);
    TreeNode(uint16_t MajorVersion, uint16_t MinorVersion,
             uint32_t Characteristics, uint32_t Origin, uint32_t DataIndex);

    bool addEntry(const ResourceEntryRef &Entry, uint32_t Origin,
                  std::vector<std::vector<uint8_t>> &Data,
                  std::vector<std::vector<UTF16>> &StringTable,
                  TreeNode *&Result);
    TreeNode &addTypeNode(const ResourceEntryRef &Entry,
                          std::vector<std::vector<UTF16>> &StringTable);
    TreeNode &addNameNode(const ResourceEntryRef &Entry,
                          std::vector<std::vector<UTF16>> &StringTable);
    bool addLanguageNode(const ResourceEntryRef &Entry, uint32_t Origin,
                         std::vector<std::vector<uint8_t>> &Data,
                         TreeNode *&Result);
    bool addDataChild(uint32_t ID, uint16_t MajorVersion, uint16_t MinorVersion,
                      uint32_t Characteristics, uint32_t Origin,
                      uint32_t DataIndex, TreeNode *&Result);
    TreeNode &addIDChild(uint32_t ID);
    TreeNode &addNameChild(ArrayRef<UTF16> NameRef,
                           std::vector<std::vector<UTF16>> &StringTable);
    void shiftDataIndexDown(uint32_t Index);

    bool IsDataNode = false;
    uint32_t StringIndex;
    uint32_t DataIndex;
    Children<uint32_t> IDChildren;
    Children<std::string> StringChildren;
    uint16_t MajorVersion = 0;
    uint16_t MinorVersion = 0;
    uint32_t Characteristics = 0;

    // The .res file that defined this TreeNode, for diagnostics.
    // Index into InputFilenames.
    uint32_t Origin;
  };

  struct StringOrID {
    bool IsString;
    ArrayRef<UTF16> String;
    uint32_t ID;

    StringOrID(uint32_t ID) : IsString(false), ID(ID) {}
    StringOrID(ArrayRef<UTF16> String) : IsString(true), String(String) {}
  };

private:
  Error addChildren(TreeNode &Node, ResourceSectionRef &RSR,
                    const coff_resource_dir_table &Table, uint32_t Origin,
                    std::vector<StringOrID> &Context,
                    std::vector<std::string> &Duplicates);
  bool shouldIgnoreDuplicate(const ResourceEntryRef &Entry) const;
  bool shouldIgnoreDuplicate(const std::vector<StringOrID> &Context) const;

  TreeNode Root;
  std::vector<std::vector<uint8_t>> Data;
  std::vector<std::vector<UTF16>> StringTable;

  std::vector<std::string> InputFilenames;

  bool MinGW;
};

Expected<std::unique_ptr<MemoryBuffer>>
writeWindowsResourceCOFF(llvm::COFF::MachineTypes MachineType,
                         const WindowsResourceParser &Parser,
                         uint32_t TimeDateStamp);

void printResourceTypeName(uint16_t TypeID, raw_ostream &OS);
} // namespace object
} // namespace llvm

#endif