132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
/* vim: set sw=4 sts=4 et foldmethod=syntax : */
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/*
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* Copyright (c) 2007 Tiziano Müller
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* Copyright (c) 2007 David Leverton
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*
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* This file is part of the Paludis package manager. Paludis is free software;
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* you can redistribute it and/or modify it under the terms of the GNU General
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* Public License version 2, as published by the Free Software Foundation.
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*
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* Paludis is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PALUDIS_GUARD_PALUDIS_UTIL_ELF_HH
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#define PALUDIS_GUARD_PALUDIS_UTIL_ELF_HH 1
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#include <paludis/util/elf_sections.hh>
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#include <paludis/util/exception.hh>
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#include <paludis/util/iterator_range.hh>
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#include <paludis/util/pimp.hh>
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#include <paludis/util/wrapped_forward_iterator-fwd.hh>
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#include <iosfwd>
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#include <elf.h>
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namespace paludis
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{
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class InvalidElfFileError :
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public paludis::Exception
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{
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public:
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InvalidElfFileError(const InvalidElfFileError &) = default;
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InvalidElfFileError(const std::string &) noexcept;
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};
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template <typename ElfType_>
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struct ElfObjectSectionIteratorTag;
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template <typename ElfType_>
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class PALUDIS_VISIBLE ElfObject
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{
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private:
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Pimp<ElfObject> _imp;
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typename ElfType_::Header _hdr;
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public:
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static bool is_valid_elf(std::istream & stream);
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ElfObject(std::istream & stream);
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~ElfObject();
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/**
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* Returns e_type from the ELF header
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*/
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unsigned int get_type() const
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{
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return _hdr.e_type;
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}
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/**
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* Returns e_machine from the ELF header
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*/
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unsigned int get_arch() const
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{
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return _hdr.e_machine;
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}
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/**
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* Returns the OS ABI field from the ident field
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*/
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unsigned char get_os_abi() const
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{
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return _hdr.e_ident[EI_OSABI];
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}
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/**
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* Returns the OS ABI Version field from the ident field
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*/
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unsigned char get_os_abi_version() const
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{
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return _hdr.e_ident[EI_ABIVERSION];
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}
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/**
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* Returns the processor-specific flags
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*/
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unsigned int get_flags() const
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{
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return _hdr.e_flags;
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}
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/**
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* Returns whether this ELF file uses big-endian or little-endian
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* Please note: If you didn't use is_valid_elf(...) to check whether
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* this is an ELF object, this might be wrong
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*/
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unsigned int is_big_endian() const
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{
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// We already checked in is_valid_elf_type whether it's valid or not
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return (_hdr.e_ident[EI_DATA] == ELFDATA2MSB);
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}
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unsigned int get_number_of_sections() const
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{
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return _hdr.e_shnum;
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}
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typedef ElfObjectSectionIteratorTag<ElfType_> SectionIteratorTag;
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typedef paludis::WrappedForwardIterator<SectionIteratorTag, Section<ElfType_> > SectionIterator;
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SectionIterator section_begin() const;
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SectionIterator section_end() const;
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IteratorRange<SectionIterator> sections() const noexcept
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{
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return {section_begin(), section_end()};
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}
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SectionIterator get_section_by_index(unsigned int index) const;
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void resolve_all_strings();
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};
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}
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#endif
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