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// Copyright (c) 2010, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Unit tests for FileID
#include <elf.h>
#include <stdlib.h>
#include "common/linux/file_id.h"
#include "breakpad_googletest_includes.h"
using namespace google_breakpad;
namespace {
typedef testing::Test FileIDTest;
}
TEST(FileIDTest, FileIDStrip) {
// Calculate the File ID of our binary using
// FileID::ElfFileIdentifier, then make a copy of our binary,
// strip it, and ensure that we still get the same result.
char exe_name[PATH_MAX];
ssize_t len = readlink("/proc/self/exe", exe_name, PATH_MAX - 1);
ASSERT_NE(len, -1);
exe_name[len] = '\0';
// copy our binary to a temp file, and strip it
char templ[] = "/tmp/file-id-unittest-XXXXXX";
mktemp(templ);
char cmdline[4096];
sprintf(cmdline, "cp \"%s\" \"%s\"", exe_name, templ);
ASSERT_EQ(system(cmdline), 0);
sprintf(cmdline, "strip \"%s\"", templ);
ASSERT_EQ(system(cmdline), 0);
uint8_t identifier1[sizeof(MDGUID)];
uint8_t identifier2[sizeof(MDGUID)];
FileID fileid1(exe_name);
EXPECT_TRUE(fileid1.ElfFileIdentifier(identifier1));
FileID fileid2(templ);
EXPECT_TRUE(fileid2.ElfFileIdentifier(identifier2));
char identifier_string1[37];
char identifier_string2[37];
FileID::ConvertIdentifierToString(identifier1, identifier_string1,
37);
FileID::ConvertIdentifierToString(identifier2, identifier_string2,
37);
EXPECT_STREQ(identifier_string1, identifier_string2);
unlink(templ);
}
struct ElfClass32 {
typedef Elf32_Ehdr Ehdr;
typedef Elf32_Shdr Shdr;
static const int kClass = ELFCLASS32;
};
struct ElfClass64 {
typedef Elf64_Ehdr Ehdr;
typedef Elf64_Shdr Shdr;
static const int kClass = ELFCLASS64;
};
template<typename ElfClass>
struct ElfishElf {
static const size_t kTextSectionSize = 128;
typedef typename ElfClass::Ehdr Ehdr;
typedef typename ElfClass::Shdr Shdr;
Ehdr elf_header;
Shdr text_header;
Shdr string_header;
char text_section[kTextSectionSize];
char string_section[8];
static void Populate(ElfishElf* elf) {
memset(elf, 0, sizeof(ElfishElf));
memcpy(elf, ELFMAG, SELFMAG);
elf->elf_header.e_ident[EI_CLASS] = ElfClass::kClass;
elf->elf_header.e_shoff = offsetof(ElfishElf, text_header);
elf->elf_header.e_shnum = 2;
elf->elf_header.e_shstrndx = 1;
elf->text_header.sh_name = 0;
elf->text_header.sh_type = SHT_PROGBITS;
elf->text_header.sh_offset = offsetof(ElfishElf, text_section);
elf->text_header.sh_size = kTextSectionSize;
for (size_t i = 0; i < kTextSectionSize; ++i) {
elf->text_section[i] = i * 3;
}
elf->string_header.sh_offset = offsetof(ElfishElf, string_section);
strcpy(elf->string_section, ".text");
}
};
TEST(FileIDTest, ElfClass) {
uint8_t identifier[sizeof(MDGUID)];
const char expected_identifier_string[] =
"80808080-8080-0000-0000-008080808080";
char identifier_string[sizeof(expected_identifier_string)];
ElfishElf<ElfClass32> elf32;
ElfishElf<ElfClass32>::Populate(&elf32);
EXPECT_TRUE(FileID::ElfFileIdentifierFromMappedFile(&elf32, identifier));
FileID::ConvertIdentifierToString(identifier, identifier_string,
sizeof(identifier_string));
EXPECT_STREQ(expected_identifier_string, identifier_string);
memset(identifier, 0, sizeof(identifier));
memset(identifier_string, 0, sizeof(identifier_string));
ElfishElf<ElfClass64> elf64;
ElfishElf<ElfClass64>::Populate(&elf64);
EXPECT_TRUE(FileID::ElfFileIdentifierFromMappedFile(&elf64, identifier));
FileID::ConvertIdentifierToString(identifier, identifier_string,
sizeof(identifier_string));
EXPECT_STREQ(expected_identifier_string, identifier_string);
}
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