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use crate::header::{class, data, elf_type, machine, osabi, version, ELFHeader};
use crate::*;
use serde::{Deserialize, Serialize};
#[derive(Clone, Copy, Hash, PartialOrd, Ord, PartialEq, Eq, Serialize, Deserialize)]
#[repr(C)]
pub struct Ehdr32 {
pub e_ident: [u8; 16],
pub e_type: Elf32Half,
pub e_machine: Elf32Half,
pub e_version: Elf32Word,
pub e_entry: Elf32Addr,
pub e_phoff: Elf32Off,
pub e_shoff: Elf32Off,
pub e_flags: Elf32Word,
pub e_ehsize: Elf32Half,
pub e_phentsize: Elf32Half,
pub e_phnum: Elf32Half,
pub e_shentsize: Elf32Half,
pub e_shnum: Elf32Half,
pub e_shstrndx: Elf32Half,
}
impl ELFHeader for Ehdr32 {
fn deserialize(buf: &[u8]) -> Self {
bincode::deserialize(&buf[..Ehdr32::size() as usize]).unwrap()
}
fn program_header_table_exists(&self) -> bool {
self.e_phnum != 0
}
fn section_number(&self) -> usize {
self.e_shnum as usize
}
fn section_offset(&self) -> usize {
self.e_shoff as usize
}
fn segment_number(&self) -> usize {
self.e_phnum as usize
}
fn segment_offset(&self) -> usize {
self.e_phoff as usize
}
fn section_name_table_idx(&self) -> usize {
self.e_shstrndx as usize
}
}
impl Default for Ehdr32 {
fn default() -> Self {
Self {
e_ident: [
0x7f, 0x45, 0x4c, 0x46, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00,
],
e_type: 0,
e_machine: 0,
e_version: 0,
e_entry: 0,
e_phoff: 0,
e_shoff: 0,
e_flags: 0,
e_ehsize: 0,
e_phentsize: 0,
e_phnum: 0,
e_shentsize: 0,
e_shnum: 0,
e_shstrndx: 0,
}
}
}
impl Ehdr32 {
pub fn size() -> Elf64Half {
52
}
pub fn get_class(&self) -> class::Class {
class::Class::from(self.e_ident[class::Class::INDEX])
}
pub fn get_data(&self) -> data::Data {
data::Data::from(self.e_ident[data::Data::INDEX])
}
pub fn get_file_version(&self) -> version::Version {
version::Version::from(self.e_ident[version::Version::INDEX])
}
pub fn get_object_version(&self) -> version::Version {
version::Version::from(self.e_version)
}
pub fn get_type(&self) -> elf_type::Type {
elf_type::Type::from(self.e_type)
}
pub fn get_machine(&self) -> machine::Machine {
machine::Machine::from(self.e_machine)
}
pub fn get_osabi(&self) -> osabi::OSABI {
osabi::OSABI::from(self.e_ident[osabi::OSABI::INDEX])
}
pub fn set_class(&mut self, c: class::Class) {
self.e_ident[class::Class::INDEX] = c.to_identifier();
}
pub fn set_data(&mut self, d: data::Data) {
self.e_ident[data::Data::INDEX] = d.to_identifier();
}
pub fn set_file_version(&mut self, v: version::Version) {
self.e_ident[version::Version::INDEX] = v.to_identifier();
}
pub fn set_object_version(&mut self, v: version::Version) {
self.e_version = v.to_object_version();
}
pub fn set_osabi(&mut self, o: osabi::OSABI) {
self.e_ident[osabi::OSABI::INDEX] = o.to_identifier();
}
pub fn set_elf_type(&mut self, e_type: elf_type::Type) {
self.e_type = e_type.to_bytes();
}
pub fn set_machine(&mut self, e_machine: machine::Machine) {
self.e_machine = e_machine.to_bytes();
}
pub fn to_le_bytes(&self) -> Vec<u8> {
bincode::serialize(self).unwrap()
}
pub fn deserialize(buf: &[u8], start: usize) -> Result<Self, Box<dyn std::error::Error>> {
match bincode::deserialize(&buf[start..]) {
Ok(header) => Ok(header),
Err(e) => Err(e),
}
}
}