523 lines
22 KiB
C++
523 lines
22 KiB
C++
#pragma once
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#include <string>
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#include <vector>
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#include <istream>
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#include <ostream>
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#include <map>
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#include "pe_exception.h"
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#include "pe_structures.h"
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#include "utils.h"
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#include "pe_section.h"
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#include "pe_properties.h"
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//Please don't remove this information from header
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//PEBliss 1.0.0
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//(c) DX 2011 - 2012, http://kaimi.ru
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//Free to use for commertial and non-commertial purposes, modification and distribution
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// == more important ==
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//TODO: compact import rebuilder
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//TODO: remove sections in the middle
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//== less important ==
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//TODO: relocations that take more than one element (seems to be not possible in Windows PE, but anyway)
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//TODO: delay import directory
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//TODO: write message tables
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//TODO: write string tables
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//TODO: read security information
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//TODO: read full .NET information
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namespace pe_bliss
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{
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//Portable executable class
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class pe_base
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{
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public: //CONSTRUCTORS
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//Constructor from stream
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pe_base(std::istream& file, const pe_properties& props, bool read_debug_raw_data = true);
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//Constructor of empty PE-file
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explicit pe_base(const pe_properties& props, uint32_t section_alignment = 0x1000, bool dll = false, uint16_t subsystem = pe_win::image_subsystem_windows_gui);
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pe_base(const pe_base& pe);
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pe_base& operator=(const pe_base& pe);
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public:
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~pe_base();
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public: //STUB
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//Strips stub MSVS overlay, if any
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void strip_stub_overlay();
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//Fills stub MSVS overlay with specified byte
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void fill_stub_overlay(char c);
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//Sets stub MSVS overlay
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void set_stub_overlay(const std::string& data);
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//Returns stub overlay contents
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const std::string& get_stub_overlay() const;
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public: //DIRECTORIES
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//Returns true if directory exists
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bool directory_exists(uint32_t id) const;
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//Removes directory
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void remove_directory(uint32_t id);
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//Returns directory RVA
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uint32_t get_directory_rva(uint32_t id) const;
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//Returns directory size
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uint32_t get_directory_size(uint32_t id) const;
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//Sets directory RVA (just a value of PE header, no moving occurs)
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void set_directory_rva(uint32_t id, uint32_t rva);
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//Sets directory size (just a value of PE header, no moving occurs)
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void set_directory_size(uint32_t id, uint32_t size);
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//Strips only zero DATA_DIRECTORY entries to count = min_count
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//Returns resulting number of data directories
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//strip_iat_directory - if true, even not empty IAT directory will be stripped
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uint32_t strip_data_directories(uint32_t min_count = 1, bool strip_iat_directory = true);
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//Returns true if image has import directory
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bool has_imports() const;
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//Returns true if image has export directory
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bool has_exports() const;
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//Returns true if image has resource directory
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bool has_resources() const;
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//Returns true if image has security directory
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bool has_security() const;
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//Returns true if image has relocations
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bool has_reloc() const;
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//Returns true if image has TLS directory
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bool has_tls() const;
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//Returns true if image has config directory
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bool has_config() const;
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//Returns true if image has bound import directory
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bool has_bound_import() const;
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//Returns true if image has delay import directory
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bool has_delay_import() const;
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//Returns true if image has COM directory
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bool is_dotnet() const;
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//Returns true if image has exception directory
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bool has_exception_directory() const;
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//Returns true if image has debug directory
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bool has_debug() const;
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//Returns subsystem value
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uint16_t get_subsystem() const;
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//Sets subsystem value
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void set_subsystem(uint16_t subsystem);
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//Returns true if image has console subsystem
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bool is_console() const;
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//Returns true if image has Windows GUI subsystem
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bool is_gui() const;
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//Sets required operation system version
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void set_os_version(uint16_t major, uint16_t minor);
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//Returns required operation system version (minor word)
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uint16_t get_minor_os_version() const;
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//Returns required operation system version (major word)
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uint16_t get_major_os_version() const;
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//Sets required subsystem version
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void set_subsystem_version(uint16_t major, uint16_t minor);
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//Returns required subsystem version (minor word)
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uint16_t get_minor_subsystem_version() const;
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//Returns required subsystem version (major word)
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uint16_t get_major_subsystem_version() const;
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public: //PE HEADER
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//Returns DOS header
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const pe_win::image_dos_header& get_dos_header() const;
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pe_win::image_dos_header& get_dos_header();
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//Returns PE header start (e_lfanew)
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int32_t get_pe_header_start() const;
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//Returns file alignment
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uint32_t get_file_alignment() const;
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//Sets file alignment, checking the correctness of its value
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void set_file_alignment(uint32_t alignment);
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//Returns size of image
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uint32_t get_size_of_image() const;
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//Returns image entry point
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uint32_t get_ep() const;
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//Sets image entry point (just a value of PE header)
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void set_ep(uint32_t new_ep);
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//Returns number of RVA and sizes (number of DATA_DIRECTORY entries)
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uint32_t get_number_of_rvas_and_sizes() const;
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//Sets number of RVA and sizes (number of DATA_DIRECTORY entries)
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void set_number_of_rvas_and_sizes(uint32_t number);
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//Returns PE characteristics
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uint16_t get_characteristics() const;
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//Sets PE characteristics (a value inside header)
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void set_characteristics(uint16_t ch);
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//Clears PE characteristics flag
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void clear_characteristics_flags(uint16_t flags);
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//Sets PE characteristics flag
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void set_characteristics_flags(uint16_t flags);
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//Returns true if PE characteristics flag set
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bool check_characteristics_flag(uint16_t flag) const;
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//Returns DLL Characteristics
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uint16_t get_dll_characteristics() const;
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//Sets DLL Characteristics
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void set_dll_characteristics(uint16_t characteristics);
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//Returns size of headers
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uint32_t get_size_of_headers() const;
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//Returns size of optional header
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uint16_t get_size_of_optional_header() const;
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//Returns PE signature
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uint32_t get_pe_signature() const;
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//Returns magic value
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uint32_t get_magic() const;
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//Returns image base for PE32 and PE64 respectively
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uint32_t get_image_base_32() const;
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void get_image_base(uint32_t& base) const;
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//Sets image base for PE32 and PE64 respectively
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uint64_t get_image_base_64() const;
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void get_image_base(uint64_t& base) const;
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//Sets new image base
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void set_image_base(uint32_t base);
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void set_image_base_64(uint64_t base);
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//Sets heap size commit for PE32 and PE64 respectively
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void set_heap_size_commit(uint32_t size);
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void set_heap_size_commit(uint64_t size);
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//Sets heap size reserve for PE32 and PE64 respectively
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void set_heap_size_reserve(uint32_t size);
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void set_heap_size_reserve(uint64_t size);
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//Sets stack size commit for PE32 and PE64 respectively
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void set_stack_size_commit(uint32_t size);
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void set_stack_size_commit(uint64_t size);
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//Sets stack size reserve for PE32 and PE64 respectively
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void set_stack_size_reserve(uint32_t size);
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void set_stack_size_reserve(uint64_t size);
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//Returns heap size commit for PE32 and PE64 respectively
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uint32_t get_heap_size_commit_32() const;
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void get_heap_size_commit(uint32_t& size) const;
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uint64_t get_heap_size_commit_64() const;
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void get_heap_size_commit(uint64_t& size) const;
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//Returns heap size reserve for PE32 and PE64 respectively
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uint32_t get_heap_size_reserve_32() const;
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void get_heap_size_reserve(uint32_t& size) const;
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uint64_t get_heap_size_reserve_64() const;
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void get_heap_size_reserve(uint64_t& size) const;
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//Returns stack size commit for PE32 and PE64 respectively
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uint32_t get_stack_size_commit_32() const;
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void get_stack_size_commit(uint32_t& size) const;
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uint64_t get_stack_size_commit_64() const;
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void get_stack_size_commit(uint64_t& size) const;
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//Returns stack size reserve for PE32 and PE64 respectively
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uint32_t get_stack_size_reserve_32() const;
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void get_stack_size_reserve(uint32_t& size) const;
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uint64_t get_stack_size_reserve_64() const;
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void get_stack_size_reserve(uint64_t& size) const;
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//Updates virtual size of image corresponding to section virtual sizes
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void update_image_size();
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//Returns checksum of PE file from header
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uint32_t get_checksum() const;
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//Sets checksum of PE file
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void set_checksum(uint32_t checksum);
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//Returns timestamp of PE file from header
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uint32_t get_time_date_stamp() const;
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//Sets timestamp of PE file
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void set_time_date_stamp(uint32_t timestamp);
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//Returns Machine field value of PE file from header
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uint16_t get_machine() const;
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//Sets Machine field value of PE file
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void set_machine(uint16_t machine);
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//Returns data from the beginning of image
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//Size = SizeOfHeaders
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const std::string& get_full_headers_data() const;
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typedef std::multimap<uint32_t, std::string> debug_data_list;
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//Returns raw list of debug data
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const debug_data_list& get_raw_debug_data_list() const;
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//Reads and checks DOS header
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static void read_dos_header(std::istream& file, pe_win::image_dos_header& header);
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//Returns sizeof() nt headers
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uint32_t get_sizeof_nt_header() const;
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//Returns sizeof() optional headers
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uint32_t get_sizeof_opt_headers() const;
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//Returns raw nt headers data pointer
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const char* get_nt_headers_ptr() const;
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//Sets size of headers (to NT headers)
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void set_size_of_headers(uint32_t size);
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//Sets size of optional headers (to NT headers)
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void set_size_of_optional_header(uint16_t size);
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//Sets base of code
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void set_base_of_code(uint32_t base);
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//Returns base of code
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uint32_t get_base_of_code() const;
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public: //ADDRESS CONVERTIONS
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//Virtual Address (VA) to Relative Virtual Address (RVA) convertions
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//for PE32 and PE64 respectively
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//bound_check checks integer overflow
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uint32_t va_to_rva(uint32_t va, bool bound_check = true) const;
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uint32_t va_to_rva(uint64_t va, bool bound_check = true) const;
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//Relative Virtual Address (RVA) to Virtual Address (VA) convertions
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//for PE32 and PE64 respectively
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uint32_t rva_to_va_32(uint32_t rva) const;
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void rva_to_va(uint32_t rva, uint32_t& va) const;
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uint64_t rva_to_va_64(uint32_t rva) const;
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void rva_to_va(uint32_t rva, uint64_t& va) const;
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//RVA to RAW file offset convertion (4gb max)
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uint32_t rva_to_file_offset(uint32_t rva) const;
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//RAW file offset to RVA convertion (4gb max)
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uint32_t file_offset_to_rva(uint32_t offset) const;
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//RVA from section raw data offset
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static uint32_t rva_from_section_offset(const section& s, uint32_t raw_offset_from_section_start);
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public: //IMAGE SECTIONS
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//Returns number of sections from PE header
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uint16_t get_number_of_sections() const;
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//Updates number of sections in PE header
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uint16_t update_number_of_sections();
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//Returns section alignment
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uint32_t get_section_alignment() const;
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//Returns section list
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section_list& get_image_sections();
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const section_list& get_image_sections() const;
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//Realigns all sections, if you made any changes to sections or alignments
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void realign_all_sections();
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//Resligns section with specified index
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void realign_section(uint32_t index);
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//Returns section from RVA inside it
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section& section_from_rva(uint32_t rva);
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const section& section_from_rva(uint32_t rva) const;
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//Returns section from directory ID
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section& section_from_directory(uint32_t directory_id);
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const section& section_from_directory(uint32_t directory_id) const;
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//Returns section from VA inside it for PE32 and PE64 respectively
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section& section_from_va(uint32_t va);
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const section& section_from_va(uint32_t va) const;
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section& section_from_va(uint64_t va);
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const section& section_from_va(uint64_t va) const;
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//Returns section from file offset (4gb max)
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section& section_from_file_offset(uint32_t offset);
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const section& section_from_file_offset(uint32_t offset) const;
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//Returns section TOTAL RAW/VIRTUAL data length from RVA inside section
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//If include_headers = true, data from the beginning of PE file to SizeOfHeaders will be searched, too
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uint32_t section_data_length_from_rva(uint32_t rva, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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//Returns section TOTAL RAW/VIRTUAL data length from VA inside section for PE32 and PE64 respectively
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//If include_headers = true, data from the beginning of PE file to SizeOfHeaders will be searched, too
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uint32_t section_data_length_from_va(uint32_t va, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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uint32_t section_data_length_from_va(uint64_t va, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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//Returns section remaining RAW/VIRTUAL data length from RVA to the end of section "s" (checks bounds)
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uint32_t section_data_length_from_rva(const section& s, uint32_t rva_inside, section_data_type datatype = section_data_raw) const;
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//Returns section remaining RAW/VIRTUAL data length from VA to the end of section "s" for PE32 and PE64 respectively (checks bounds)
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uint32_t section_data_length_from_va(const section& s, uint64_t va_inside, section_data_type datatype = section_data_raw) const;
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uint32_t section_data_length_from_va(const section& s, uint32_t va_inside, section_data_type datatype = section_data_raw) const;
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//Returns section remaining RAW/VIRTUAL data length from RVA "rva_inside" to the end of section containing RVA "rva"
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//If include_headers = true, data from the beginning of PE file to SizeOfHeaders will be searched, too
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uint32_t section_data_length_from_rva(uint32_t rva, uint32_t rva_inside, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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//Returns section remaining RAW/VIRTUAL data length from VA "va_inside" to the end of section containing VA "va" for PE32 and PE64 respectively
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//If include_headers = true, data from the beginning of PE file to SizeOfHeaders will be searched, too
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uint32_t section_data_length_from_va(uint32_t va, uint32_t va_inside, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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uint32_t section_data_length_from_va(uint64_t va, uint64_t va_inside, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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//If include_headers = true, data from the beginning of PE file to SizeOfHeaders will be searched, too
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//Returns corresponding section data pointer from RVA inside section
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char* section_data_from_rva(uint32_t rva, bool include_headers = false);
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const char* section_data_from_rva(uint32_t rva, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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//Returns corresponding section data pointer from VA inside section for PE32 and PE64 respectively
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char* section_data_from_va(uint32_t va, bool include_headers = false);
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const char* section_data_from_va(uint32_t va, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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char* section_data_from_va(uint64_t va, bool include_headers = false);
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const char* section_data_from_va(uint64_t va, section_data_type datatype = section_data_raw, bool include_headers = false) const;
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//Returns corresponding section data pointer from RVA inside section "s" (checks bounds)
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char* section_data_from_rva(section& s, uint32_t rva);
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const char* section_data_from_rva(const section& s, uint32_t rva, section_data_type datatype = section_data_raw) const;
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//Returns corresponding section data pointer from VA inside section "s" for PE32 and PE64 respectively (checks bounds)
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char* section_data_from_va(section& s, uint32_t va); //Always returns raw data
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const char* section_data_from_va(const section& s, uint32_t va, section_data_type datatype = section_data_raw) const;
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char* section_data_from_va(section& s, uint64_t va); //Always returns raw data
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const char* section_data_from_va(const section& s, uint64_t va, section_data_type datatype = section_data_raw) const;
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//Returns corresponding section data pointer from RVA inside section "s" (checks bounds, checks sizes, the most safe function)
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template<typename T>
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T section_data_from_rva(const section& s, uint32_t rva, section_data_type datatype = section_data_raw) const
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{
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if(rva >= s.get_virtual_address() && rva < s.get_virtual_address() + s.get_aligned_virtual_size(get_section_alignment()) && pe_utils::is_sum_safe(rva, sizeof(T)))
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{
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const std::string& data = datatype == section_data_raw ? s.get_raw_data() : s.get_virtual_data(get_section_alignment());
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//Don't check for underflow here, comparsion is unsigned
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if(data.size() < rva - s.get_virtual_address() + sizeof(T))
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throw pe_exception("RVA and requested data size does not exist inside section", pe_exception::rva_not_exists);
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return *reinterpret_cast<const T*>(data.data() + rva - s.get_virtual_address());
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}
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throw pe_exception("RVA not found inside section", pe_exception::rva_not_exists);
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}
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//Returns corresponding section data pointer from RVA inside section (checks rva, checks sizes, the most safe function)
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//If include_headers = true, data from the beginning of PE file to SizeOfHeaders will be searched, too
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template<typename T>
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T section_data_from_rva(uint32_t rva, section_data_type datatype = section_data_raw, bool include_headers = false) const
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{
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//if RVA is inside of headers and we're searching them too...
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if(include_headers && pe_utils::is_sum_safe(rva, sizeof(T)) && (rva + sizeof(T) < full_headers_data_.length()))
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return *reinterpret_cast<const T*>(&full_headers_data_[rva]);
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const section& s = section_from_rva(rva);
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const std::string& data = datatype == section_data_raw ? s.get_raw_data() : s.get_virtual_data(get_section_alignment());
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//Don't check for underflow here, comparsion is unsigned
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if(data.size() < rva - s.get_virtual_address() + sizeof(T))
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throw pe_exception("RVA and requested data size does not exist inside section", pe_exception::rva_not_exists);
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return *reinterpret_cast<const T*>(data.data() + rva - s.get_virtual_address());
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}
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//Returns corresponding section data pointer from VA inside section "s" (checks bounds, checks sizes, the most safe function)
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template<typename T>
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T section_data_from_va(const section& s, uint32_t va, section_data_type datatype = section_data_raw) const
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{
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return section_data_from_rva<T>(s, va_to_rva(va), datatype);
|
|
}
|
|
|
|
template<typename T>
|
|
T section_data_from_va(const section& s, uint64_t va, section_data_type datatype = section_data_raw) const
|
|
{
|
|
return section_data_from_rva<T>(s, va_to_rva(va), datatype);
|
|
}
|
|
|
|
//Returns corresponding section data pointer from VA inside section (checks rva, checks sizes, the most safe function)
|
|
//If include_headers = true, data from the beginning of PE file to SizeOfHeaders will be searched, too
|
|
template<typename T>
|
|
T section_data_from_va(uint32_t va, section_data_type datatype = section_data_raw, bool include_headers = false) const
|
|
{
|
|
return section_data_from_rva<T>(va_to_rva(va), datatype, include_headers);
|
|
}
|
|
|
|
template<typename T>
|
|
T section_data_from_va(uint64_t va, section_data_type datatype = section_data_raw, bool include_headers = false) const
|
|
{
|
|
return section_data_from_rva<T>(va_to_rva(va), datatype, include_headers);
|
|
}
|
|
|
|
//Returns section and offset (raw data only) from its start from RVA
|
|
const std::pair<uint32_t, const section*> section_and_offset_from_rva(uint32_t rva) const;
|
|
|
|
//Sets virtual size of section "s"
|
|
//Section must be free (not bound to any image)
|
|
//or the last section of this image
|
|
//Function calls update_image_size automatically in second case
|
|
void set_section_virtual_size(section& s, uint32_t vsize);
|
|
|
|
//Represents section expand type for expand_section function
|
|
enum section_expand_type
|
|
{
|
|
expand_section_raw, //Section raw data size will be expanded
|
|
expand_section_virtual //Section virtual data size will be expanded
|
|
};
|
|
|
|
//Expands section raw or virtual size to hold data from specified RVA with specified size
|
|
//Section must be free (not bound to any image)
|
|
//or the last section of this image
|
|
//Returns true if section was expanded
|
|
bool expand_section(section& s, uint32_t needed_rva, uint32_t needed_size, section_expand_type expand);
|
|
|
|
//Adds section to image
|
|
//Returns last section
|
|
section& add_section(section s);
|
|
//Prepares section to later add it to image (checks and recalculates virtual and raw section size)
|
|
//Section must be prepared by this function before calling add_section
|
|
void prepare_section(section& s);
|
|
|
|
//Returns true if sectios "s" is already attached to this PE file
|
|
bool section_attached(const section& s) const;
|
|
|
|
|
|
public: //IMAGE
|
|
//Returns PE type (PE or PE+) from pe_type enumeration (minimal correctness checks)
|
|
static pe_type get_pe_type(std::istream& file);
|
|
//Returns PE type of this image
|
|
pe_type get_pe_type() const;
|
|
|
|
//Returns true if image has overlay data at the end of file
|
|
bool has_overlay() const;
|
|
|
|
//Realigns file (changes file alignment)
|
|
void realign_file(uint32_t new_file_alignment);
|
|
|
|
//Helper function to recalculate RAW and virtual section sizes and strip it, if necessary
|
|
//auto_strip = strip section, if necessary
|
|
void recalculate_section_sizes(section& s, bool auto_strip);
|
|
|
|
// ========== END OF PUBLIC MEMBERS AND STRUCTURES ========== //
|
|
private:
|
|
//Image DOS header
|
|
pe_win::image_dos_header dos_header_;
|
|
//Rich (stub) overlay data (for MSVS)
|
|
std::string rich_overlay_;
|
|
//List of image sections
|
|
section_list sections_;
|
|
//True if image has overlay
|
|
bool has_overlay_;
|
|
//Raw SizeOfHeaders-sized data from the beginning of image
|
|
std::string full_headers_data_;
|
|
//Raw debug data for all directories
|
|
//PointerToRawData; Data
|
|
debug_data_list debug_data_;
|
|
//PE or PE+ related properties
|
|
pe_properties* props_;
|
|
|
|
//Reads and checks DOS header
|
|
void read_dos_header(std::istream& file);
|
|
|
|
//Reads and checks PE headers and section headers, data
|
|
void read_pe(std::istream& file, bool read_debug_raw_data);
|
|
|
|
//Sets number of sections
|
|
void set_number_of_sections(uint16_t number);
|
|
//Sets size of image
|
|
void set_size_of_image(uint32_t size);
|
|
//Sets file alignment (no checks)
|
|
void set_file_alignment_unchecked(uint32_t alignment);
|
|
//Returns needed magic of image
|
|
uint32_t get_needed_magic() const;
|
|
//Returns nt headers data pointer
|
|
char* get_nt_headers_ptr();
|
|
|
|
private:
|
|
static const uint16_t maximum_number_of_sections = 0x60;
|
|
static const uint32_t minimum_file_alignment = 512;
|
|
|
|
private:
|
|
//RAW file offset to section convertion helpers (4gb max)
|
|
section_list::const_iterator file_offset_to_section(uint32_t offset) const;
|
|
section_list::iterator file_offset_to_section(uint32_t offset);
|
|
};
|
|
}
|