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97 lines
3.0 KiB
97 lines
3.0 KiB
#pragma once
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#include <decomp/decomp.hpp>
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#include <obf/engine.hpp>
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#include <recomp/symbol_table.hpp>
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/// <summary>
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/// this namespace encompasses all recomposition related code.
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/// </summary>
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namespace theo::recomp {
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/// <summary>
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/// a function which is called by recomp_t to resolve external symbols
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/// </summary>
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using resolver_t = std::function<std::uintptr_t(std::string)>;
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/// <summary>
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/// a function which is called by recomp_t to copy symbols into memory.
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/// </summary>
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using copier_t = std::function<void(std::uintptr_t, void*, std::uint32_t)>;
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/// <summary>
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/// a function which is called to allocate space for a symbol.
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///
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/// the first param is the size of the symbol, the second param is the
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/// characteristics of the section which the symbol is allocated in.
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/// </summary>
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using allocator_t =
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std::function<std::uintptr_t(std::uint32_t,
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coff::section_characteristics_t)>;
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/// <summary>
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/// the main class responsible for recomposition
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/// </summary>
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class recomp_t {
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public:
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/// <summary>
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/// the explicit constructor for the recomp_t class.
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/// </summary>
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/// <param name="dcmp">pointer to a decomp_t class.</param>
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/// <param name="alloc">lambda function which is used to allocate memory for
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/// symbols.</param> <param name="copy">lambda function used to copy bytes
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/// into allocations.</param> <param name="resolve">lambda function used to
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/// resolve external symbols.</param>
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explicit recomp_t(decomp::decomp_t* dcmp,
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allocator_t alloc,
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copier_t copy,
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resolver_t resolve);
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/// <summary>
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/// when called, this function allocates space for every symbol.
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/// </summary>
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void allocate();
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/// <summary>
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/// when called, this function resolves all relocations in every symbol.
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/// </summary>
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void resolve();
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/// <summary>
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/// when called, this function copies symbols into allocations.
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/// </summary>
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void copy_syms();
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/// <summary>
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/// setter for the allocater lambda function.
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/// </summary>
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/// <param name="alloc">lambda function which allocates memory for
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/// symbols.</param>
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void allocator(allocator_t alloc);
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/// <summary>
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/// setter for the copier lambda function.
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/// </summary>
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/// <param name="copy">copier lambda function used to copy bytes into
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/// allocations made by the allocator.</param>
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void copier(copier_t copy);
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/// <summary>
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/// setter for the resolve lambda function.
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/// </summary>
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/// <param name="resolve">lambda function to resolve external symbols.</param>
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void resolver(resolver_t resolve);
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/// <summary>
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/// resolves the address of a function given its name.
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/// </summary>
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/// <param name="sym">the name of the symbol to resolve the location
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/// of.</param> <returns>the address of the symbol.</returns>
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std::uintptr_t resolve(const std::string&& sym);
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private:
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decomp::decomp_t* m_dcmp;
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resolver_t m_resolver;
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copier_t m_copier;
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allocator_t m_allocator;
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};
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} // namespace theo::recomp
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