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
|
//===-- WindowsResource.cpp -------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the .res file class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/WindowsResource.h"
#include "llvm/Support/COFF.h"
#include <system_error>
namespace llvm {
namespace object {
#define RETURN_IF_ERROR(X) \
if (auto EC = X) \
return EC;
const uint32_t MIN_HEADER_SIZE = 7 * sizeof(uint32_t) + 2 * sizeof(uint16_t);
static const size_t ResourceMagicSize = 16;
static const size_t NullEntrySize = 16;
WindowsResource::WindowsResource(MemoryBufferRef Source)
: Binary(Binary::ID_WinRes, Source) {
size_t LeadingSize = ResourceMagicSize + NullEntrySize;
BBS = BinaryByteStream(Data.getBuffer().drop_front(LeadingSize),
support::little);
}
Expected<std::unique_ptr<WindowsResource>>
WindowsResource::createWindowsResource(MemoryBufferRef Source) {
if (Source.getBufferSize() < ResourceMagicSize + NullEntrySize)
return make_error<GenericBinaryError>(
"File too small to be a resource file",
object_error::invalid_file_type);
std::unique_ptr<WindowsResource> Ret(new WindowsResource(Source));
return std::move(Ret);
}
Expected<ResourceEntryRef> WindowsResource::getHeadEntry() {
Error Err = Error::success();
auto Ref = ResourceEntryRef(BinaryStreamRef(BBS), this, Err);
if (Err)
return std::move(Err);
return Ref;
}
ResourceEntryRef::ResourceEntryRef(BinaryStreamRef Ref,
const WindowsResource *Owner, Error &Err)
: Reader(Ref), OwningRes(Owner) {
if (loadNext())
Err = make_error<GenericBinaryError>("Could not read first entry.",
object_error::unexpected_eof);
}
Error ResourceEntryRef::moveNext(bool &End) {
// Reached end of all the entries.
if (Reader.bytesRemaining() == 0) {
End = true;
return Error::success();
}
RETURN_IF_ERROR(loadNext());
return Error::success();
}
static Error readStringOrId(BinaryStreamReader &Reader, uint16_t &ID,
ArrayRef<UTF16> &Str, bool &IsString) {
uint16_t IDFlag;
RETURN_IF_ERROR(Reader.readInteger(IDFlag));
IsString = IDFlag != 0xffff;
if (IsString) {
Reader.setOffset(
Reader.getOffset() -
sizeof(uint16_t)); // Re-read the bytes which we used to check the flag.
RETURN_IF_ERROR(Reader.readWideString(Str));
} else
RETURN_IF_ERROR(Reader.readInteger(ID));
return Error::success();
}
Error ResourceEntryRef::loadNext() {
uint32_t DataSize;
RETURN_IF_ERROR(Reader.readInteger(DataSize));
uint32_t HeaderSize;
RETURN_IF_ERROR(Reader.readInteger(HeaderSize));
if (HeaderSize < MIN_HEADER_SIZE)
return make_error<GenericBinaryError>("Header size is too small.",
object_error::parse_failed);
RETURN_IF_ERROR(readStringOrId(Reader, TypeID, Type, IsStringType));
RETURN_IF_ERROR(readStringOrId(Reader, NameID, Name, IsStringName));
RETURN_IF_ERROR(Reader.padToAlignment(sizeof(uint32_t)));
RETURN_IF_ERROR(Reader.readObject(Suffix));
RETURN_IF_ERROR(Reader.readArray(Data, DataSize));
RETURN_IF_ERROR(Reader.padToAlignment(sizeof(uint32_t)));
return Error::success();
}
WindowsResourceParser::WindowsResourceParser() {}
Error WindowsResourceParser::parse(WindowsResource *WR) {
auto EntryOrErr = WR->getHeadEntry();
if (!EntryOrErr)
return EntryOrErr.takeError();
ResourceEntryRef Entry = EntryOrErr.get();
bool End = false;
while (!End) {
Root.addEntry(Entry);
RETURN_IF_ERROR(Entry.moveNext(End));
}
return Error::success();
}
void WindowsResourceParser::printTree() const {
ScopedPrinter Writer(outs());
Root.print(Writer, "Resource Tree");
}
void WindowsResourceParser::TreeNode::addEntry(const ResourceEntryRef &Entry) {
TreeNode &TypeNode = addTypeNode(Entry);
TreeNode &NameNode = TypeNode.addNameNode(Entry);
NameNode.addLanguageNode(Entry);
}
WindowsResourceParser::TreeNode::TreeNode(uint32_t ID) : ID(ID) {}
WindowsResourceParser::TreeNode::TreeNode(ArrayRef<UTF16> NameRef)
: Name(NameRef) {}
WindowsResourceParser::TreeNode &
WindowsResourceParser::TreeNode::addTypeNode(const ResourceEntryRef &Entry) {
if (Entry.checkTypeString())
return addChild(Entry.getTypeString());
else
return addChild(Entry.getTypeID());
}
WindowsResourceParser::TreeNode &
WindowsResourceParser::TreeNode::addNameNode(const ResourceEntryRef &Entry) {
if (Entry.checkNameString())
return addChild(Entry.getNameString());
else
return addChild(Entry.getNameID());
}
WindowsResourceParser::TreeNode &
WindowsResourceParser::TreeNode::addLanguageNode(
const ResourceEntryRef &Entry) {
return addChild(Entry.getLanguage());
}
WindowsResourceParser::TreeNode &
WindowsResourceParser::TreeNode::addChild(uint32_t ID) {
auto Child = IDChildren.find(ID);
if (Child == IDChildren.end()) {
auto NewChild = llvm::make_unique<WindowsResourceParser::TreeNode>(ID);
WindowsResourceParser::TreeNode &Node = *NewChild;
IDChildren.emplace(ID, std::move(NewChild));
return Node;
} else
return *(Child->second);
}
WindowsResourceParser::TreeNode &
WindowsResourceParser::TreeNode::addChild(ArrayRef<UTF16> NameRef) {
std::string NameString;
ArrayRef<UTF16> CorrectedName;
if (llvm::sys::IsBigEndianHost) {
std::vector<UTF16> EndianCorrectedName;
EndianCorrectedName.resize(NameRef.size() + 1);
std::copy(NameRef.begin(), NameRef.end(), EndianCorrectedName.begin() + 1);
EndianCorrectedName[0] = UNI_UTF16_BYTE_ORDER_MARK_SWAPPED;
CorrectedName = makeArrayRef(EndianCorrectedName);
} else
CorrectedName = NameRef;
llvm::convertUTF16ToUTF8String(CorrectedName, NameString);
auto Child = StringChildren.find(NameString);
if (Child == StringChildren.end()) {
auto NewChild = llvm::make_unique<WindowsResourceParser::TreeNode>(NameRef);
WindowsResourceParser::TreeNode &Node = *NewChild;
StringChildren.emplace(NameString, std::move(NewChild));
return Node;
} else
return *(Child->second);
}
void WindowsResourceParser::TreeNode::print(ScopedPrinter &Writer,
StringRef Name) const {
ListScope NodeScope(Writer, Name);
for (auto const &Child : StringChildren) {
Child.second->print(Writer, Child.first);
}
for (auto const &Child : IDChildren) {
Child.second->print(Writer, std::to_string(Child.first));
}
}
} // namespace object
} // namespace llvm
|
