public void Save(String filename) { // initialize stream FileStream stream = File.Create(filename); // Initialize Elf endianness ElfEndian endian = new ElfEndian(elf.Header.Encoding); // Save Elf header ElfHDR hdr = elf.Header; Byte[] hdrData = new Byte[hdr.DataSize]; elf.Header.Save(endian, ref hdrData); stream.Write(hdrData, 0, hdrData.Length); // Save programs Byte[] phdrData = new Byte[hdr.ProgramHeaderSize]; stream.Seek((Int64)hdr.ProgramHeaderOffset, SeekOrigin.Begin); for (int i = 0; i < hdr.ProgramHeaderCount; i++) { // Save program headers elf.Programs[i].Header.Save(endian, hdr.Class, ref phdrData); stream.Write(phdrData, 0, phdrData.Length); } // Save sections Byte[] shdrData = new Byte[hdr.SectionHeaderSize]; stream.Seek((Int64)hdr.SectionHeaderOffset, SeekOrigin.Begin); for (int i = 0; i < hdr.SectionHeaderCount; i++) { // Save section header ElfSHDR shdr = elf.Sections[i].Header; ElfSectionType type = shdr.Type; shdr.Save(endian, hdr.Class, ref shdrData); stream.Write(shdrData, 0, shdrData.Length); if (type != ElfSectionType.SHT_NULL && type != ElfSectionType.SHT_NOBITS) { Byte[] section = elf.Sections[i].Section; //stream.Write(elf.Sections[i].Section, 0, ; } } for (int i = 0; i < hdr.SectionHeaderCount; i++) { // Save section data ElfSection section = elf.Sections[i]; ElfSectionType type = section.Header.Type; if (type != ElfSectionType.SHT_NULL && type != ElfSectionType.SHT_NOBITS) { stream.Seek((Int64)section.Header.FileOffset, SeekOrigin.Begin); stream.Write(section.Section, 0, (int)section.Header.Size); } } // Close stream stream.Close(); }
public ElfSection(ElfSHDR header, Byte[] section) { // Initialize header this.header = header; // Initialize section this.section = section; }
private void Write(Byte[] buffer, UInt32 address, Int32 count, Int32 offset) { if (count > 0) { for (int i = 0; i < elf.Header.SectionHeaderCount; i++) { ElfSection section = elf.Sections[i]; ElfSHDR shdr = section.Header; ElfSectionType type = shdr.Type; if (type != ElfSectionType.SHT_NULL && type != ElfSectionType.SHT_NOBITS) { if (address >= shdr.Address && address < (shdr.Address + shdr.Size)) { int soff = (int)(address - shdr.Address); int num = Math.Min(count, (int)shdr.Size - soff); Array.Copy(buffer, offset, section.Section, soff, num); Write(buffer, address + (uint)num, count - num, offset + num); return; } } } } }
public void Load(String filename) { // initialize stream FileStream stream = File.OpenRead(filename); // Read Elf ID ElfHDR elfhdr = new ElfHDR(); Byte[] elfid = new Byte[(int)ElfIdent.EI_NIDENT]; stream.Read(elfid, 0, elfid.Length); elfhdr.Identification = elfid; if (!elfhdr.IsElf) { throw new ArgumentException("Given file is not an elf"); } // Initialize Elf endianness ElfEndian endian = new ElfEndian(elfhdr.Encoding); // Read Elf header Byte[] elfhdrData = new Byte[elfhdr.DataSize]; stream.Seek(0, SeekOrigin.Begin); stream.Read(elfhdrData, 0, elfhdr.DataSize); elfhdr.Load(endian, elfhdrData); // Read programs ElfProgram[] elfprogs = new ElfProgram[elfhdr.ProgramHeaderCount]; Byte[] elfphdrData = new Byte[elfhdr.ProgramHeaderSize]; for (int i = 0; i < elfhdr.ProgramHeaderCount; i++) { ElfPHDR phdr = new ElfPHDR(elfhdr.Class); stream.Seek((Int64)elfhdr.ProgramHeaderOffset + i * elfhdr.ProgramHeaderSize, SeekOrigin.Begin); stream.Read(elfphdrData, 0, elfhdr.ProgramHeaderSize); phdr.Load(endian, elfhdr.Class, elfphdrData); elfprogs[i] = new ElfProgram(phdr); } // Read sections ElfSection[] elfsects = new ElfSection[elfhdr.SectionHeaderCount]; Byte[] elfshdrData = new Byte[elfhdr.SectionHeaderSize]; for (int i = 0; i < elfhdr.SectionHeaderCount; i++) { ElfSHDR shdr = new ElfSHDR(elfhdr.Class); stream.Seek((Int64)elfhdr.SectionHeaderOffset + i * elfhdr.SectionHeaderSize, SeekOrigin.Begin); stream.Read(elfshdrData, 0, elfhdr.SectionHeaderSize); shdr.Load(endian, elfhdr.Class, elfshdrData); Byte[] section = null; if (shdr.Type != ElfSectionType.SHT_NOBITS && shdr.Type != ElfSectionType.SHT_NULL) { section = new Byte[shdr.Size]; stream.Seek((Int64)shdr.FileOffset, SeekOrigin.Begin); stream.Read(section, 0, section.Length); } elfsects[i] = new ElfSection(shdr, section); } // Initialize Elf elf = new Elf(elfhdr, elfprogs, elfsects); // Close stream stream.Close(); }