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185 lines
7.4 KiB
C++
185 lines
7.4 KiB
C++
/*************************************************************************/
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/* Copyright (c) 2015 dx, http://kaimi.ru */
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/* */
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/* Permission is hereby granted, free of charge, to any person */
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/* obtaining a copy of this software and associated documentation */
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/* files (the "Software"), to deal in the Software without */
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/* restriction, including without limitation the rights to use, */
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/* copy, modify, merge, publish, distribute, sublicense, and/or */
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/* sell copies of the Software, and to permit persons to whom the */
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/* Software is furnished to do so, subject to the following conditions: */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#pragma once
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#include <vector>
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#include <string>
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#include "pe_structures.h"
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#include "pe_base.h"
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#include "pe_directory.h"
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namespace pe_bliss
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{
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//Class representing exported function
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class exported_function
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{
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public:
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//Default constructor
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exported_function();
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//Returns ordinal of function (actually, ordinal = hint + ordinal base)
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uint16_t get_ordinal() const;
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//Returns RVA of function
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uint32_t get_rva() const;
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//Returns true if function has name and name ordinal
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bool has_name() const;
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//Returns name of function
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const std::string& get_name() const;
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//Returns name ordinal of function
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uint16_t get_name_ordinal() const;
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//Returns true if function is forwarded to other library
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bool is_forwarded() const;
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//Returns the name of forwarded function
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const std::string& get_forwarded_name() const;
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public: //Setters do not change everything inside image, they are used by PE class
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//You can also use them to rebuild export directory
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//Sets ordinal of function
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void set_ordinal(uint16_t ordinal);
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//Sets RVA of function
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void set_rva(uint32_t rva);
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//Sets name of function (or clears it, if empty name is passed)
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void set_name(const std::string& name);
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//Sets name ordinal
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void set_name_ordinal(uint16_t name_ordinal);
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//Sets forwarded function name (or clears it, if empty name is passed)
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void set_forwarded_name(const std::string& name);
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private:
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uint16_t ordinal_; //Function ordinal
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uint32_t rva_; //Function RVA
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std::string name_; //Function name
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bool has_name_; //true == function has name
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uint16_t name_ordinal_; //Function name ordinal
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bool forward_; //true == function is forwarded
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std::string forward_name_; //Name of forwarded function
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};
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//Class representing export information
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class export_info
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{
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public:
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//Default constructor
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export_info();
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//Returns characteristics
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uint32_t get_characteristics() const;
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//Returns timestamp
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uint32_t get_timestamp() const;
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//Returns major version
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uint16_t get_major_version() const;
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//Returns minor version
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uint16_t get_minor_version() const;
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//Returns DLL name
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const std::string& get_name() const;
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//Returns ordinal base
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uint32_t get_ordinal_base() const;
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//Returns number of functions
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uint32_t get_number_of_functions() const;
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//Returns number of function names
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uint32_t get_number_of_names() const;
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//Returns RVA of function address table
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uint32_t get_rva_of_functions() const;
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//Returns RVA of function name address table
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uint32_t get_rva_of_names() const;
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//Returns RVA of name ordinals table
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uint32_t get_rva_of_name_ordinals() const;
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public: //Setters do not change everything inside image, they are used by PE class
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//You can also use them to rebuild export directory using rebuild_exports
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//Sets characteristics
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void set_characteristics(uint32_t characteristics);
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//Sets timestamp
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void set_timestamp(uint32_t timestamp);
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//Sets major version
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void set_major_version(uint16_t major_version);
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//Sets minor version
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void set_minor_version(uint16_t minor_version);
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//Sets DLL name
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void set_name(const std::string& name);
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//Sets ordinal base
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void set_ordinal_base(uint32_t ordinal_base);
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//Sets number of functions
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void set_number_of_functions(uint32_t number_of_functions);
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//Sets number of function names
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void set_number_of_names(uint32_t number_of_names);
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//Sets RVA of function address table
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void set_rva_of_functions(uint32_t rva_of_functions);
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//Sets RVA of function name address table
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void set_rva_of_names(uint32_t rva_of_names);
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//Sets RVA of name ordinals table
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void set_rva_of_name_ordinals(uint32_t rva_of_name_ordinals);
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private:
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uint32_t characteristics_;
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uint32_t timestamp_;
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uint16_t major_version_;
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uint16_t minor_version_;
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std::string name_;
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uint32_t ordinal_base_;
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uint32_t number_of_functions_;
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uint32_t number_of_names_;
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uint32_t address_of_functions_;
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uint32_t address_of_names_;
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uint32_t address_of_name_ordinals_;
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};
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//Exported functions list typedef
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typedef std::vector<exported_function> exported_functions_list;
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//Returns array of exported functions
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const exported_functions_list get_exported_functions(const pe_base& pe);
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//Returns array of exported functions and information about export
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const exported_functions_list get_exported_functions(const pe_base& pe, export_info& info);
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//Helper export functions
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//Returns pair: <ordinal base for supplied functions; maximum ordinal value for supplied functions>
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const std::pair<uint16_t, uint16_t> get_export_ordinal_limits(const exported_functions_list& exports);
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//Checks if exported function name already exists
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bool exported_name_exists(const std::string& function_name, const exported_functions_list& exports);
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//Checks if exported function ordinal already exists
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bool exported_ordinal_exists(uint16_t ordinal, const exported_functions_list& exports);
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//Export directory rebuilder
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//info - export information
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//exported_functions_list - list of exported functions
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//exports_section - section where export directory will be placed (must be attached to PE image)
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//offset_from_section_start - offset from exports_section raw data start
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//save_to_pe_headers - if true, new export directory information will be saved to PE image headers
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//auto_strip_last_section - if true and exports are placed in the last section, it will be automatically stripped
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//number_of_functions and number_of_names parameters don't matter in "info" when rebuilding, they're calculated independently
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//characteristics, major_version, minor_version, timestamp and name are the only used members of "info" structure
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//Returns new export directory information
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//exported_functions_list is copied intentionally to be sorted by ordinal values later
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//Name ordinals in exported function don't matter, they will be recalculated
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const image_directory rebuild_exports(pe_base& pe, const export_info& info, exported_functions_list exports, section& exports_section, uint32_t offset_from_section_start = 0, bool save_to_pe_header = true, bool auto_strip_last_section = true);
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}
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