ldid.hpp

   1 #ifndef LDID_HPP
   2 #define LDID_HPP
   3
   4 #include <cstdlib>
   5 #include <map>
   6 #include <set>
   7 #include <sstream>
   8 #include <streambuf>
   9 #include <string>
  10 #include <vector>
  11
  12 namespace ldid {
  13
  14 // I wish Apple cared about providing quality toolchains :/
  15
  16 template <typename Function_>
  17 class Functor;
  18
  19 template <typename Type_, typename... Args_>
  20 class Functor<Type_ (Args_...)> {
  21   public:
  22     virtual Type_ operator ()(Args_... args) const = 0;
  23 };
  24
  25 template <typename Function_>
  26 class FunctorImpl;
  27
  28 template <typename Value_, typename Type_, typename... Args_>
  29 class FunctorImpl<Type_ (Value_::*)(Args_...) const> :
  30     public Functor<Type_ (Args_...)>
  31 {
  32   private:
  33     const Value_ *value_;
  34
  35   public:
  36     FunctorImpl(const Value_ &value) :
  37         value_(&value)
  38     {
  39     }
  40
  41     virtual Type_ operator ()(Args_... args) const {
  42         return (*value_)(args...);
  43     }
  44 };
  45
  46 template <typename Function_>
  47 FunctorImpl<decltype(&Function_::operator())> fun(const Function_ &value) {
  48     return value;
  49 }
  50
  51 struct Progress {
  52     virtual void operator()(const std::string &value) const = 0;
  53     virtual void operator()(double value) const = 0;
  54 };
  55
  56 class Folder {
  57   public:
  58     virtual void Save(const std::string &path, bool edit, const void *flag, const Functor<void (std::streambuf &)> &code) = 0;
  59     virtual bool Look(const std::string &path) const = 0;
  60     virtual void Open(const std::string &path, const Functor<void (std::streambuf &, size_t, const void *)> &code) const = 0;
  61     virtual void Find(const std::string &path, const Functor<void (const std::string &)> &code, const Functor<void (const std::string &, const Functor<std::string ()> &)> &link) const = 0;
  62 };
  63
  64 class DiskFolder :
  65     public Folder
  66 {
  67   private:
  68     const std::string path_;
  69     std::map<std::string, std::string> commit_;
  70
  71   protected:
  72     std::string Path(const std::string &path) const;
  73
  74   private:
  75     void Find(const std::string &root, const std::string &base, const Functor<void (const std::string &)> &code, const Functor<void (const std::string &, const Functor<std::string ()> &)> &link) const;
  76
  77   public:
  78     DiskFolder(const std::string &path);
  79     ~DiskFolder();
  80
  81     virtual void Save(const std::string &path, bool edit, const void *flag, const Functor<void (std::streambuf &)> &code);
  82     virtual bool Look(const std::string &path) const;
  83     virtual void Open(const std::string &path, const Functor<void (std::streambuf &, size_t, const void *)> &code) const;
  84     virtual void Find(const std::string &path, const Functor<void (const std::string &)> &code, const Functor<void (const std::string &, const Functor<std::string ()> &)> &link) const;
  85 };
  86
  87 class SubFolder :
  88     public Folder
  89 {
  90   private:
  91     Folder &parent_;
  92     std::string path_;
  93
  94   public:
  95     SubFolder(Folder &parent, const std::string &path);
  96
  97     virtual void Save(const std::string &path, bool edit, const void *flag, const Functor<void (std::streambuf &)> &code);
  98     virtual bool Look(const std::string &path) const;
  99     virtual void Open(const std::string &path, const Functor<void (std::streambuf &, size_t, const void *)> &code) const;
 100     virtual void Find(const std::string &path, const Functor<void (const std::string &)> &code, const Functor<void (const std::string &, const Functor<std::string ()> &)> &link) const;
 101 };
 102
 103 class UnionFolder :
 104     public Folder
 105 {
 106   private:
 107     struct Reset {
 108         const void *flag_;
 109         std::streambuf *data_;
 110     };
 111
 112     Folder &parent_;
 113     std::set<std::string> deletes_;
 114
 115     std::map<std::string, std::string> remaps_;
 116     mutable std::map<std::string, Reset> resets_;
 117
 118     std::string Map(const std::string &path) const;
 119     void Map(const std::string &path, const Functor<void (const std::string &)> &code, const std::string &file, const Functor<void (const Functor<void (std::streambuf &, size_t, const void *)> &)> &save) const;
 120
 121   public:
 122     UnionFolder(Folder &parent);
 123
 124     virtual void Save(const std::string &path, bool edit, const void *flag, const Functor<void (std::streambuf &)> &code);
 125     virtual bool Look(const std::string &path) const;
 126     virtual void Open(const std::string &path, const Functor<void (std::streambuf &, size_t, const void *)> &code) const;
 127     virtual void Find(const std::string &path, const Functor<void (const std::string &)> &code, const Functor<void (const std::string &, const Functor<std::string ()> &)> &link) const;
 128
 129     void operator ()(const std::string &from) {
 130         deletes_.insert(from);
 131     }
 132
 133     void operator ()(const std::string &from, const std::string &to) {
 134         operator ()(from);
 135         remaps_[to] = from;
 136     }
 137
 138     void operator ()(const std::string &from, const void *flag, std::streambuf &data) {
 139         operator ()(from);
 140         auto &reset(resets_[from]);
 141         reset.flag_ = flag;
 142         reset.data_ = &data;
 143     }
 144 };
 145
 146 struct Hash {
 147     uint8_t sha1_[0x14];
 148     uint8_t sha256_[0x20];
 149 };
 150
 151 struct Bundle {
 152     std::string path;
 153     Hash hash;
 154 };
 155
 156 Bundle Sign(const std::string &root, Folder &folder, const std::string &key, const std::string &requirements, const Functor<std::string (const std::string &, const std::string &)> &alter, const Progress &progress);
 157
 158 typedef std::map<uint32_t, Hash> Slots;
 159
 160 Hash Sign(const void *idata, size_t isize, std::streambuf &output, const std::string &identifier, const std::string &entitlements, const std::string &requirements, const std::string &key, const Slots &slots, const Progress &progress);
 161
 162 }
 163
 164 #endif//LDID_HPP