public Elf(Stream stream) : base(stream)
{
elf_header = new elf_header();
elf_header.m_dwFormat = ReadUInt32();
elf_header.m_arch = ReadByte();
if (elf_header.m_arch == 2)//64
{
throw new Exception("ERROR: 64 bit not supported.");
}
elf_header.m_endian = ReadByte();
elf_header.m_version = ReadByte();
elf_header.m_osabi = ReadByte();
elf_header.m_osabi_ver = ReadByte();
elf_header.e_pad = ReadBytes(7);
elf_header.e_type = ReadUInt16();
elf_header.e_machine = ReadUInt16();
elf_header.e_version = ReadUInt32();
elf_header.e_entry = ReadUInt32();
elf_header.e_phoff = ReadUInt32();
elf_header.e_shoff = ReadUInt32();
elf_header.e_flags = ReadUInt32();
elf_header.e_ehsize = ReadUInt16();
elf_header.e_phentsize = ReadUInt16();
elf_header.e_phnum = ReadUInt16();
elf_header.e_shentsize = ReadUInt16();
elf_header.e_shnum = ReadUInt16();
elf_header.e_shtrndx = ReadUInt16();
program_table_element = ReadClassArray <program_header_table>(elf_header.e_phoff, elf_header.e_phnum);
}
public ELF(string elf_file)
{
//Load ELF file
error = 0;
FileStream file = new FileStream(elf_file, FileMode.Open);
elf = new byte[file.Length];
file.Read(elf, 0, (int)file.Length);
file.Close();
//Parse ELF
//Read Header
hdr = new elf_header();
MemoryStream elf_data = new MemoryStream(elf);
elf_data.Seek(0, SeekOrigin.Begin);
hdr.e_hdr_magic = ReadUInt32(elf_data, 2);
hdr.e_hdr_class = elf[4];
hdr.e_hdr_data = elf[5];
hdr.e_hdr_version = elf[6];
if (hdr.e_hdr_magic != 0x7F454C46)
{
//Not ELF file
Console.WriteLine(hdr.e_hdr_magic.ToString("x"));
error = 1;
return;
}
if (hdr.e_hdr_class != 1)
{
//Is not 32-bit ELF
error = 2;
return;
}
elf_data.Seek(0x18, SeekOrigin.Begin);
hdr.e_entry = ReadUInt32(elf_data, hdr.e_hdr_data);
hdr.e_phoff = ReadUInt32(elf_data, hdr.e_hdr_data);
hdr.e_shoff = ReadUInt32(elf_data, hdr.e_hdr_data);
hdr.e_flags = ReadUInt32(elf_data, hdr.e_hdr_data);
hdr.e_ehsize = ReadUInt16(elf_data, hdr.e_hdr_data);
hdr.e_phentsize = ReadUInt16(elf_data, hdr.e_hdr_data);
hdr.e_phnum = ReadUInt16(elf_data, hdr.e_hdr_data);
hdr.e_shentsize = ReadUInt16(elf_data, hdr.e_hdr_data);
hdr.e_shnum = ReadUInt16(elf_data, hdr.e_hdr_data);
hdr.e_shstrndx = ReadUInt16(elf_data, hdr.e_hdr_data);
//Read Section Headers
section_hdrs = new List <section_header>();
for (int i = 0; i < hdr.e_shnum; i++)
{
elf_data.Seek(hdr.e_shoff + hdr.e_shentsize * i, SeekOrigin.Begin);
section_header section = new section_header();
section.sh_name_off = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_type = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_flags = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_addr = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_offset = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_size = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_link = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_info = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_addralign = ReadUInt32(elf_data, hdr.e_hdr_data);
section.sh_entsize = ReadUInt32(elf_data, hdr.e_hdr_data);
section_hdrs.Add(section);
}
//Get Names
for (int i = 0; i < section_hdrs.Count; i++)
{
elf_data.Seek(section_hdrs[hdr.e_shstrndx].sh_offset + section_hdrs[i].sh_name_off, SeekOrigin.Begin);
section_hdrs[i].sh_name = ReadString(elf_data);
Console.WriteLine(section_hdrs[i].sh_name + " - Offset: 0x" + section_hdrs[i].sh_offset.ToString("x"));
if (section_hdrs[i].sh_name == ".debug")
{
debug_offset = section_hdrs[i].sh_offset;
debug_size = section_hdrs[i].sh_size;
}
}
elf_data.Close();
}
