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细节优化

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Perfare 2020-02-08 19:04:51 +08:00
parent 79f60bd73a
commit 021dcce9c7
11 changed files with 174 additions and 175 deletions
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19
Il2CppDumper/ExecutableFormats/Elf.cs
View file

@ -54,7 +54,7 @@ namespace Il2CppDumper
RelocationProcessing();
if (CheckProtection())
{
Console.WriteLine("ERROR: This file is protected.");
Console.WriteLine("ERROR: This file may be protected.");
}
}
}
@ -185,10 +185,17 @@ namespace Il2CppDumper
private void ReadSymbol()
{
var dynsymOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_SYMTAB).d_un);
var dynstrOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_STRTAB).d_un);
var dynsymSize = dynstrOffset - dynsymOffset;
symbolTable = ReadClassArray<Elf32_Sym>(dynsymOffset, (long)dynsymSize / 16);
try
{
var dynsymOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_SYMTAB).d_un);
var dynstrOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_STRTAB).d_un);
var dynsymSize = dynstrOffset - dynsymOffset;
symbolTable = ReadClassArray<Elf32_Sym>(dynsymOffset, (long)dynsymSize / 16);
}
catch
{
// ignored
}
}
private void RelocationProcessing()
@ -243,7 +250,7 @@ namespace Il2CppDumper
return true;
}
}
if (sectionTable.Any(x => x.sh_type == SHT_LOUSER))
if (sectionTable != null && sectionTable.Any(x => x.sh_type == SHT_LOUSER))
{
Console.WriteLine("WARNING: find SHT_LOUSER section");
return true;

19
Il2CppDumper/ExecutableFormats/Elf64.cs
View file

@ -45,7 +45,7 @@ namespace Il2CppDumper
RelocationProcessing();
if (CheckProtection())
{
Console.WriteLine("ERROR: This file is protected.");
Console.WriteLine("ERROR: This file may be protected.");
}
}
}
@ -128,10 +128,17 @@ namespace Il2CppDumper
private void ReadSymbol()
{
var dynsymOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_SYMTAB).d_un);
var dynstrOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_STRTAB).d_un);
var dynsymSize = dynstrOffset - dynsymOffset;
symbolTable = ReadClassArray<Elf64_Sym>(dynsymOffset, (long)dynsymSize / 24L);
try
{
var dynsymOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_SYMTAB).d_un);
var dynstrOffset = MapVATR(dynamicSection.First(x => x.d_tag == DT_STRTAB).d_un);
var dynsymSize = dynstrOffset - dynsymOffset;
symbolTable = ReadClassArray<Elf64_Sym>(dynsymOffset, (long)dynsymSize / 24L);
}
catch
{
// ignored
}
}
private void RelocationProcessing()
@ -190,7 +197,7 @@ namespace Il2CppDumper
return true;
}
}
if (sectionTable.Any(x => x.sh_type == SHT_LOUSER))
if (sectionTable != null && sectionTable.Any(x => x.sh_type == SHT_LOUSER))
{
Console.WriteLine("WARNING: find SHT_LOUSER section");
return true;

81
Il2CppDumper/ExecutableFormats/Elf64Class.cs
View file

@ -1,81 +0,0 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Il2CppDumper
{
public class Elf64_Ehdr
{
public uint ei_mag;
public byte ei_class;
public byte ei_data;
public byte ei_version;
public byte ei_osabi;
public byte ei_abiversion;
[ArrayLength(Length = 7)]
public byte[] ei_pad;
public ushort e_type;
public ushort e_machine;
public uint e_version;
public ulong e_entry;
public ulong e_phoff;
public ulong e_shoff;
public uint e_flags;
public ushort e_ehsize;
public ushort e_phentsize;
public ushort e_phnum;
public ushort e_shentsize;
public ushort e_shnum;
public ushort e_shtrndx;
}
public class Elf64_Phdr
{
public uint p_type;
public uint p_flags;
public ulong p_offset;
public ulong p_vaddr;
public ulong p_paddr;
public ulong p_filesz;
public ulong p_memsz;
public ulong p_align;
}
public class Elf64_Shdr
{
public uint sh_name;
public uint sh_type;
public ulong sh_flags;
public ulong sh_addr;
public ulong sh_offset;
public ulong sh_size;
public uint sh_link;
public uint sh_info;
public ulong sh_addralign;
public ulong sh_entsize;
}
public class Elf64_Sym
{
public uint st_name;
public byte st_info;
public byte st_other;
public ushort st_shndx;
public ulong st_value;
public ulong st_size;
}
public class Elf64_Dyn
{
public long d_tag;
public ulong d_un;
}
public class Elf64_Rela
{
public ulong r_offset;
public ulong r_info;
public long r_addend;
}
}

114
Il2CppDumper/ExecutableFormats/ElfClass.cs
View file

@ -1,8 +1,4 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
namespace Il2CppDumper
{
@ -78,4 +74,114 @@ namespace Il2CppDumper
public uint r_offset;
public uint r_info;
}
public class Elf64_Ehdr
{
public uint ei_mag;
public byte ei_class;
public byte ei_data;
public byte ei_version;
public byte ei_osabi;
public byte ei_abiversion;
[ArrayLength(Length = 7)]
public byte[] ei_pad;
public ushort e_type;
public ushort e_machine;
public uint e_version;
public ulong e_entry;
public ulong e_phoff;
public ulong e_shoff;
public uint e_flags;
public ushort e_ehsize;
public ushort e_phentsize;
public ushort e_phnum;
public ushort e_shentsize;
public ushort e_shnum;
public ushort e_shtrndx;
}
public class Elf64_Phdr
{
public uint p_type;
public uint p_flags;
public ulong p_offset;
public ulong p_vaddr;
public ulong p_paddr;
public ulong p_filesz;
public ulong p_memsz;
public ulong p_align;
}
public class Elf64_Shdr
{
public uint sh_name;
public uint sh_type;
public ulong sh_flags;
public ulong sh_addr;
public ulong sh_offset;
public ulong sh_size;
public uint sh_link;
public uint sh_info;
public ulong sh_addralign;
public ulong sh_entsize;
}
public class Elf64_Sym
{
public uint st_name;
public byte st_info;
public byte st_other;
public ushort st_shndx;
public ulong st_value;
public ulong st_size;
}
public class Elf64_Dyn
{
public long d_tag;
public ulong d_un;
}
public class Elf64_Rela
{
public ulong r_offset;
public ulong r_info;
public long r_addend;
}
public static class ElfConstants
{
public const int EM_386 = 3;
public const int EM_ARM = 40;
public const int PT_LOAD = 1;
public const int PT_DYNAMIC = 2;
public const int PF_X = 1;
public const int DT_PLTGOT = 3;
public const int DT_HASH = 4;
public const int DT_STRTAB = 5;
public const int DT_SYMTAB = 6;
public const int DT_RELA = 7;
public const int DT_RELASZ = 8;
public const int DT_RELAENT = 9;
public const int DT_SYMENT = 11;
public const int DT_INIT = 12;
public const int DT_REL = 17;
public const int DT_RELSZ = 18;
public const int DT_JMPREL = 23;
public const int DT_INIT_ARRAY = 25;
public const int DT_FINI_ARRAY = 26;
public const int DT_INIT_ARRAYSZ = 27;
public const uint SHT_LOUSER = 0x80000000;
public const int R_ARM_ABS32 = 2;
public const int R_386_32 = 1;
public const int R_AARCH64_ABS64 = 257;
public const int R_AARCH64_RELATIVE = 1027;
}
}

38
Il2CppDumper/ExecutableFormats/ElfConstants.cs
View file

@ -1,38 +0,0 @@
namespace Il2CppDumper
{
static class ElfConstants
{
public const int EM_386 = 3;
public const int EM_ARM = 40;
public const int PT_LOAD = 1;
public const int PT_DYNAMIC = 2;
public const int PF_X = 1;
public const int DT_PLTGOT = 3;
public const int DT_HASH = 4;
public const int DT_STRTAB = 5;
public const int DT_SYMTAB = 6;
public const int DT_RELA = 7;
public const int DT_RELASZ = 8;
public const int DT_RELAENT = 9;
public const int DT_SYMENT = 11;
public const int DT_INIT = 12;
public const int DT_REL = 17;
public const int DT_RELSZ = 18;
public const int DT_JMPREL = 23;
public const int DT_INIT_ARRAY = 25;
public const int DT_FINI_ARRAY = 26;
public const int DT_INIT_ARRAYSZ = 27;
public const uint SHT_LOUSER = 0x80000000;
public const int R_ARM_ABS32 = 2;
public const int R_386_32 = 1;
public const int R_AARCH64_ABS64 = 257;
public const int R_AARCH64_RELATIVE = 1027;
}
}

4
Il2CppDumper/ExecutableFormats/Metadata.cs
View file

@ -39,7 +39,7 @@ namespace Il2CppDumper
metadataHeader = ReadClass<Il2CppGlobalMetadataHeader>();
if (metadataHeader.sanity != 0xFAB11BAF)
{
throw new Exception("ERROR: Metadata file supplied is not valid metadata file.");
throw new InvalidDataException("ERROR: Metadata file supplied is not valid metadata file.");
}
switch (metadataHeader.version)
{
@ -52,7 +52,7 @@ namespace Il2CppDumper
case 24:
break;
default:
throw new Exception($"ERROR: Metadata file supplied is not a supported version[{version}].");
throw new NotSupportedException($"ERROR: Metadata file supplied is not a supported version[{version}].");
}
imageDefs = ReadMetadataClassArray<Il2CppImageDefinition>(metadataHeader.imagesOffset, metadataHeader.imagesCount);
typeDefs = ReadMetadataClassArray<Il2CppTypeDefinition>(metadataHeader.typeDefinitionsOffset, metadataHeader.typeDefinitionsCount);

6
Il2CppDumper/ExecutableFormats/NSO.cs
View file

@ -90,10 +90,10 @@ namespace Il2CppDumper
}
}
public override ulong MapVATR(ulong uiAddr)
public override ulong MapVATR(ulong addr)
{
var segment = segments.First(x => uiAddr >= x.MemoryOffset && uiAddr <= x.MemoryOffset + x.DecompressedSize);
return uiAddr - segment.MemoryOffset + segment.FileOffset;
var segment = segments.First(x => addr >= x.MemoryOffset && addr <= x.MemoryOffset + x.DecompressedSize);
return addr - segment.MemoryOffset + segment.FileOffset;
}
public override bool Search()

19
Il2CppDumper/IO/BinaryStream.cs
View file

@ -138,26 +138,27 @@ namespace Il2CppDumper
if (version < versionAttribute.Min || version > versionAttribute.Max)
continue;
}
if (i.FieldType.IsPrimitive)
var fieldType = i.FieldType;
if (fieldType.IsPrimitive)
{
i.SetValue(t, ReadPrimitive(i.FieldType));
i.SetValue(t, ReadPrimitive(fieldType));
}
else if (i.FieldType.IsArray)
else if (fieldType.IsArray)
{
var arrayLengthAttribute = i.GetCustomAttribute<ArrayLengthAttribute>();
if (!genericMethodCache.TryGetValue(i.FieldType, out var methodInfo))
if (!genericMethodCache.TryGetValue(fieldType, out var methodInfo))
{
methodInfo = readClassArray.MakeGenericMethod(i.FieldType.GetElementType());
genericMethodCache.Add(i.FieldType, methodInfo);
methodInfo = readClassArray.MakeGenericMethod(fieldType.GetElementType());
genericMethodCache.Add(fieldType, methodInfo);
}
i.SetValue(t, methodInfo.Invoke(this, new object[] { arrayLengthAttribute.Length }));
}
else
{
if (!genericMethodCache.TryGetValue(i.FieldType, out var methodInfo))
if (!genericMethodCache.TryGetValue(fieldType, out var methodInfo))
{
methodInfo = readClass.MakeGenericMethod(i.FieldType);
genericMethodCache.Add(i.FieldType, methodInfo);
methodInfo = readClass.MakeGenericMethod(fieldType);
genericMethodCache.Add(fieldType, methodInfo);
}
i.SetValue(t, methodInfo.Invoke(this, null));
}

2
Il2CppDumper/Il2CppDumper.csproj
View file

@ -53,7 +53,6 @@
<ItemGroup>
<Compile Include="Attributes\ArrayLengthAttribute.cs" />
<Compile Include="Extensions\BoyerMooreHorspool.cs" />
<Compile Include="ExecutableFormats\ElfConstants.cs" />
<Compile Include="Extensions\HexExtensions.cs" />
<Compile Include="Outputs\DummyAssemblyExporter.cs" />
<Compile Include="Outputs\Il2CppDecompiler.cs" />
@ -70,7 +69,6 @@
<Compile Include="Utils\DummyAssemblyGenerator.cs" />
<Compile Include="ExecutableFormats\Elf.cs" />
<Compile Include="ExecutableFormats\Elf64.cs" />
<Compile Include="ExecutableFormats\Elf64Class.cs" />
<Compile Include="ExecutableFormats\Il2CppClass.cs" />
<Compile Include="ExecutableFormats\Il2Cpp.cs" />
<Compile Include="ExecutableFormats\Macho.cs" />

17
Il2CppDumper/Program.cs
View file

@ -106,7 +106,7 @@ namespace Il2CppDumper
var sanity = BitConverter.ToUInt32(metadataBytes, 0);
if (sanity != 0xFAB11BAF)
{
throw new Exception("ERROR: Metadata file supplied is not valid metadata file.");
throw new InvalidDataException("ERROR: Metadata file supplied is not valid metadata file.");
}
float fixedMetadataVersion;
var metadataVersion = BitConverter.ToInt32(metadataBytes, 4);
@ -136,7 +136,7 @@ namespace Il2CppDumper
}
catch
{
throw new Exception("You must enter the correct Unity version number");
throw new InvalidDataException("You must enter the correct Unity version number");
}
}
else
@ -154,7 +154,7 @@ namespace Il2CppDumper
switch (il2cppMagic)
{
default:
throw new Exception("ERROR: il2cpp file not supported.");
throw new NotSupportedException("ERROR: il2cpp file not supported.");
case 0x304F534E:
isNSO = true;
is64bit = true;
@ -255,11 +255,16 @@ namespace Il2CppDumper
return false;
}
if (!flag)
throw new Exception();
{
Console.WriteLine("ERROR: Can't use this mode to process file, try another mode.");
return false;
}
}
catch
catch (Exception e)
{
throw new Exception("ERROR: Can't use this mode to process file, try another mode.");
Console.WriteLine(e);
Console.WriteLine("ERROR: An error occurred while processing.");
return false;
}
return true;
}

30
Il2CppDumper/Utils/PlusSearch.cs
View file

@ -22,7 +22,7 @@ namespace Il2CppDumper
this.maxMetadataUsages = maxMetadataUsages;
}
public void SetSection(SearchSectionType type, params Elf32_Phdr[] sections)
public void SetSection(SearchSectionType type, Elf32_Phdr[] sections)
{
var secs = new List<SearchSection>();
foreach (var section in sections)
@ -41,7 +41,7 @@ namespace Il2CppDumper
SetSection(type, secs);
}
public void SetSection(SearchSectionType type, params Elf64_Phdr[] sections)
public void SetSection(SearchSectionType type, Elf64_Phdr[] sections)
{
var secs = new List<SearchSection>();
foreach (var section in sections)
@ -60,7 +60,7 @@ namespace Il2CppDumper
SetSection(type, secs);
}
public void SetSection(SearchSectionType type, params MachoSection[] sections)
public void SetSection(SearchSectionType type, MachoSection[] sections)
{
var secs = new List<SearchSection>();
foreach (var section in sections)
@ -79,7 +79,7 @@ namespace Il2CppDumper
SetSection(type, secs);
}
public void SetSection(SearchSectionType type, params MachoSection64Bit[] sections)
public void SetSection(SearchSectionType type, MachoSection64Bit[] sections)
{
var secs = new List<SearchSection>();
foreach (var section in sections)
@ -98,7 +98,7 @@ namespace Il2CppDumper
SetSection(type, secs);
}
public void SetSection(SearchSectionType type, ulong imageBase, params SectionHeader[] sections)
public void SetSection(SearchSectionType type, ulong imageBase, SectionHeader[] sections)
{
var secs = new List<SearchSection>();
foreach (var section in sections)
@ -117,22 +117,16 @@ namespace Il2CppDumper
SetSection(type, secs);
}
public void SetSection(SearchSectionType type, params NSOSegmentHeader[] sections)
public void SetSection(SearchSectionType type, NSOSegmentHeader section)
{
var secs = new List<SearchSection>();
foreach (var section in sections)
secs.Add(new SearchSection
{
if (section != null)
{
secs.Add(new SearchSection
{
offset = section.FileOffset,
offsetEnd = section.FileOffset + section.DecompressedSize,
address = section.MemoryOffset,
addressEnd = section.MemoryOffset + section.DecompressedSize
});
}
}
offset = section.FileOffset,
offsetEnd = section.FileOffset + section.DecompressedSize,
address = section.MemoryOffset,
addressEnd = section.MemoryOffset + section.DecompressedSize
});
SetSection(type, secs);
}