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//===- BuildIDTest.cpp - Tests for getBuildID ----------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/BuildID.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Object/ELFObjectFile.h"
#include "llvm/ObjectYAML/yaml2obj.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Testing/Support/Error.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace llvm::object;
template <class ELFT>
static Expected<ELFObjectFile<ELFT>> toBinary(SmallVectorImpl<char> &Storage,
StringRef Yaml) {
raw_svector_ostream OS(Storage);
yaml::Input YIn(Yaml);
if (!yaml::convertYAML(YIn, OS, [](const Twine &Msg) {}))
return createStringError(std::errc::invalid_argument,
"unable to convert YAML");
return ELFObjectFile<ELFT>::create(MemoryBufferRef(OS.str(), "dummyELF"));
}
static StringRef getInvalidNoteELF(bool WithShdr) {
static std::string WithSection(R"(
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
ProgramHeaders:
- Type: PT_NOTE
FileSize: 0x1a
FirstSec: .note.gnu.build-id
LastSec: .note.gnu.build-id
Sections:
- Name: .note.gnu.build-id
Type: SHT_NOTE
AddressAlign: 0x04
Notes:
- Name: "GNU"
Desc: "abb50d82b6bdc861"
Type: 3
)");
static std::string WithoutSection(WithSection + R"(
- Type: SectionHeaderTable
NoHeaders: true
)");
if (WithShdr)
return WithSection;
return WithoutSection;
}
// The BuildID can be looked up from a section header, if there is no program
// header.
TEST(BuildIDTest, InvalidPhdrFileSizeWithShdrs) {
SmallString<0> Storage;
Expected<ELFObjectFile<ELF64LE>> ElfOrErr =
toBinary<ELF64LE>(Storage, getInvalidNoteELF(true));
ASSERT_THAT_EXPECTED(ElfOrErr, Succeeded());
BuildIDRef BuildID = getBuildID(&ElfOrErr.get());
EXPECT_EQ(
StringRef(reinterpret_cast<const char *>(BuildID.data()), BuildID.size()),
"\xAB\xB5\x0D\x82\xB6\xBD\xC8\x61");
}
// The code handles a malformed program header that points at data outside the
// file.
TEST(BuildIDTest, InvalidPhdrFileSizeNoShdrs) {
SmallString<0> Storage;
Expected<ELFObjectFile<ELF64LE>> ElfOrErr =
toBinary<ELF64LE>(Storage, getInvalidNoteELF(false));
ASSERT_THAT_EXPECTED(ElfOrErr, Succeeded());
BuildIDRef BuildID = getBuildID(&ElfOrErr.get());
EXPECT_EQ(
StringRef(reinterpret_cast<const char *>(BuildID.data()), BuildID.size()),
"");
}
// The code handles a malformed section header that points at data outside the
// file.
TEST(BuildIDTest, InvalidSectionHeader) {
SmallString<0> Storage;
Expected<ELFObjectFile<ELF64LE>> ElfOrErr = toBinary<ELF64LE>(Storage, R"(
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Machine: EM_X86_64
ProgramHeaders:
- Type: PT_NOTE
FirstSec: .note.gnu.build-id
LastSec: .note.gnu.build-id
Sections:
- Name: .note.gnu.build-id
Type: SHT_NOTE
AddressAlign: 0x04
ShOffset: 0x1a1
Notes:
- Name: "GNU"
Desc: "abb50d82b6bdc861"
Type: 3
)");
ASSERT_THAT_EXPECTED(ElfOrErr, Succeeded());
BuildIDRef BuildID = getBuildID(&ElfOrErr.get());
EXPECT_EQ(
StringRef(reinterpret_cast<const char *>(BuildID.data()), BuildID.size()),
"\xAB\xB5\x0D\x82\xB6\xBD\xC8\x61");
}
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