src/monitor/elf/Parser.cpp

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <fcntl.h>
   5 #include <iostream>
   6
   7 #include "Parser.h"
   8
   9 namespace Aesalon {
  10 namespace Monitor {
  11 namespace ELF {
  12
  13 Parser::Parser(std::string filename) : filename(filename) {
  14     std::cout << "ELF::Parser::Parser(): filename is \"" << filename << "\"\n";
  15     file_fd = open(filename.c_str(), O_RDONLY);
  16
  17     header = new Header(file_fd);
  18
  19     lseek(file_fd, header->get_section_header_offset(), SEEK_SET);
  20
  21     for(std::size_t x = 0; x < header->get_num_sections(); x ++) {
  22         section_list.push_back(new Section(file_fd));
  23     }
  24
  25     /* Remove the first section, since, according to the standard, it is "reserved and should be all zeros" */
  26     /*section_list.erase(section_list.begin());*/
  27
  28     string_table = section_list[header->get_string_table_index()];
  29
  30     string_table->read_content();
  31
  32     for(section_list_t::iterator i = section_list.begin(); i != section_list.end(); i ++) {
  33         Byte *p = string_table->get_content()->get_data();
  34         p += (*i)->get_name_offset();
  35
  36         /*std::cout << "Section, name is \"" << (char *)p << "\'\n";*/
  37
  38         (*i)->set_name((char *)p);
  39     }
  40
  41     symbol_parser = new SymbolParser(this);
  42 }
  43
  44 Parser::~Parser() {
  45     close(file_fd);
  46 }
  47
  48 Misc::SmartPointer<Section> Parser::get_section(std::string name) const {
  49     for(section_list_t::const_iterator i = section_list.begin(); i != section_list.end(); i ++) {
  50         if((*i)->get_name() == name) return *i;
  51     }
  52     return NULL;
  53 }
  54
  55 Misc::SmartPointer<Symbol> Parser::get_symbol(std::string name) const {
  56     return symbol_parser->get_symbol(name);
  57 }
  58
  59 } // namespace ELF
  60 } // namespace Monitor
  61 } // namespace Aesalon