LunaHook-mirror/LunaHook/engines/mages/mages.cpp

#include"mages/mages.h"

namespace mages{
  
    std::map<WORD, std::wstring> createTable(int _idx) { 
       
        auto compound_charsA=LoadResData(std::vector<const wchar_t*>{
          L"compound_chars_default",
          L"compound_chars_Robotics_Notes_Elite",
          L"compound_chars_Robotics_Notes_Dash"
        }[_idx],L"COMPOUND_CHARS");
        auto charsetA=LoadResData(std::vector<const wchar_t*>{
          L"charset_default",
          L"charset_Robotics_Notes_Elite",
          L"charset_Robotics_Notes_Dash"
        }[_idx],L"CHARSET");

        
        auto compound_chars=StringToWideString(compound_charsA);
        auto charset=StringToWideString(charsetA);

        std::map<WORD, std::wstring> table = {};
        
        for (auto line : strSplit(compound_chars, L"\n")) {
            auto pair = strSplit(line, L"=");
            if (pair.size() != 2) continue;
            auto key = pair[0].substr(1, pair[0].size() - 2);
            auto val = pair[1];
            auto keys = strSplit(key, L"-");
            if (keys.size() == 1)keys.push_back(key);
            size_t _;
            auto start = std::stoi(keys[0], &_, 16);
            auto end = std::stoi(keys[1], &_, 16);
            for (auto i = start; i <= end; i++) {
                auto charCode = ((i & 0xFF) << 8) | i >> 8; // swap endian
                table[charCode] = val;
            }
        }
         
        
        WORD charCode;
        for (auto i = 0; i < charset.size(); i++) {
            charCode = 0x8000 + i;
            charCode = ((charCode & 0xFF) << 8) | charCode >> 8; // swap endian (0x8001 -> 0x0180)
            table[charCode] = charset[i];
        }
        return table;
    }
    
std::wstring mages_decode(WORD charCode,int _idx) {
    static auto table = createTable(_idx);
    if (table.find(charCode) == table.end()) {
        std::wstringstream _;
        _ << std::hex << charCode;
        return L"[" + _.str() + L"]";
    }
    else {
        return table[charCode];
    }
}
std::wstring readString(uintptr_t address,int _idx) {
    auto edx=address;
    std::wstring s = L"", bottom = L"";
    while (1) {
        auto c = *(BYTE*)edx;
        if (c == 0xff)break; // terminated
        if (c >= 0xb0) {// b4: next page?
            edx += 1;
            continue;
        }
        if (c >= 0x80) {// readChar
            auto charCode = *(WORD*)edx;
            edx += 2;
            s += mages_decode(charCode,_idx);
        }
        else {// readControl
            edx += 1;
            if (c == 0) {
                s += L' ';
            }
            else if (c == 1) {// speaker
                bottom = L"";
                while (1)
                {
                    auto c2 = *(BYTE*)edx;
                    if (c2 == 2) {
                        edx += 1; break;
                    }
                    else if (c2 < 0x20)edx += 1;
                    else {
                        auto charCode = *(WORD*)edx;
                        edx += 2;
                        bottom += mages_decode(charCode,_idx);
                    }
                }
                if(bottom.size()) s = s + bottom + L": ";
            }
            else if (c == 2) { // line
                // do nothing -> back to readChar
            }
            else if (c == 4 || c == 0x15) { // SetColor, EvaluateExpression => SKIP
            ////if (c !== 4) console.warn('Warning: ', c, hexdump(address));
            // https://github.com/CommitteeOfZero/SciAdv.Net/blob/32489cd21921079975291dbdce9151ad66f1b06a/src/SciAdvNet.SC3/Text/SC3StringDecoder.cs#L98
            //   https://github.com/CommitteeOfZero/SciAdv.Net/blob/32489cd21921079975291dbdce9151ad66f1b06a/src/SciAdvNet.SC3/Text/StringSegmentCodes.cs#L3
            // https://github.com/shiiion/steinsgate_textractor/blob/master/steinsgatetextractor/sg_text_extractor.cpp#L46
            auto token = *(BYTE*)edx; // BYTE token = read_single<BYTE>(cur_index);
            if (!token) {
                edx +=1; // return cur_index + 1;
            }
            else {
                do {
                    if (token & 0x80) {
                        switch (token & 0x60) {
                            case 0:
                                edx +=2 ; //cur_index += 2;
                                break;
                            case 0x20:
                                edx +=3; //cur_index += 3;
                                break;
                            case 0x40:
                                edx +=4; //cur_index += 4;
                                break;
                            case 0x60:
                                edx +=5; //cur_index += 5;
                                break;
                            default:
                                // impossible
                                break;
                        }
                    } else {
                        edx +=2; //cur_index += 2;
                    }
                    token = *(BYTE*)edx; //token = read_single<BYTE>(cur_index);
                } while (token);
            }
        }
        else if (c == 0x0C // SetFontSize
            || c == 0x11 // SetTopMargin
            || c == 0x12 // SetLeftMargin
            || c == 0x13 // STT_GetHardcodedValue: https://github.com/CommitteeOfZero/impacto/blob/master/src/text.cpp#L43
        ) {
            edx+=2;
        }
        else if (c == 9) { // ruby (09_text_0A_rubi_0B)
            std::wstring rubi = L"";
            bottom = L"";
            while (true) {
                auto c2 = *(BYTE*)edx;
                if (c2 == 0x0A) { // rubi
                    edx+=1;
                    while (true) {
                        c2 = *(BYTE*)edx;
                        if (c2 == 0x0B) { // end rubi
                            // address = address.add(1);
                            break; // break lv2 loop
                        }
                        else if (c2 < 0x20) { // another control
                            edx+=1;
                        }
                        else { // rubi
                            auto charCode = *(WORD*)edx;
                            edx+=2;

                            rubi += mages_decode(charCode,_idx);
                        }
                    } // end while
                }
                else if (c2 == 0x0B) { // end rubi
                    edx+=1;
                    break; // break lv1 loop
                }
                else if (c2 < 0x20) { // another control (color?)
                    edx+=1;
                }
                else { // char (text)
                    auto charCode = *(WORD*)edx;
                    edx+=2;

                    auto cc = mages_decode(charCode,_idx);
                    bottom += cc;
                    s += cc;
                }
            }
            if (rubi != L"") {
                //console.log('rubi: ', rubi);
                //console.log('char: ', bottom);
            }
        }
        else {
            // do nothing (one byte control)
        }
    }
    }
    return s;
}

}

namespace hookmages{
    
    regs reg=regs::invalid;
    int gametype=0;

template<int filter>
void SpecialHookMAGES(hook_stack* stack, HookParam*, uintptr_t* data, uintptr_t* split, size_t* len)
{
    auto edx = regof(reg,stack);//regof(edx, esp_base); 
    
    auto s=mages::readString(edx,gametype);

    if(filter){
        static std::wstring last=L"";
        if(last==s)return;
        last=s;
    }
    
    write_string_new(data,len,s);
}

bool MAGES() {
#ifndef _WIN64
    auto dialogSigOffset = 2;
    BYTE dialogSig1 []={
        0x85,XX,0x74,XX,0x83,XX,0x01,0x74,XX,0x83,XX,0x04,0x74,XX,0xc7,0x05,XX,XX,XX,XX,0x01,0x00,0x00,0x00
    };
    auto addr=MemDbg::findBytes(dialogSig1,sizeof(dialogSig1),processStartAddress,processStopAddress);
    if(addr==0){
        dialogSigOffset = 3;
        BYTE dialogSig2  []={
        0x57,0x85,XX,0x74,XX,0x83,XX,0x01,0x74,XX,0x83,XX,0x04
        };
        addr=MemDbg::findBytes(dialogSig2,sizeof(dialogSig2),processStartAddress,processStopAddress);
        
    }
    if(addr==0)return false;
    auto pos = addr+dialogSigOffset;
    //.text:00431D3F 74 16                         jz      short loc_431D57
    auto jzoff=*(BYTE*)(pos+1);
    pos+=jzoff+2;
    auto hookaddr=pos;
    for(int i=0;i<0x200;i++){
        if(((*(BYTE*)(pos))==0x8a)){
        
        switch(((*(BYTE*)(pos+1)))){
            // case 0:reg=pusha_eax_off;break; 
            //YU-NO
            //.text:00431D63 89 0D 20 A9 BF 00             mov     dword_BFA920, ecx
            //在加载到内存后，有时变成89 0d 20 a9 8a 00，导致崩溃，且这个没有遇到过，故注释掉。
        //   case 3:reg=pusha_ebx_off;break;
        //   case 1:reg=pusha_ecx_off;break;
        //   case 2:reg=pusha_edx_off;break;
        //   case 6:reg=pusha_ebp_off;break;
        //   case 7:reg=pusha_edi_off;break;
        case 3:reg=regs::ebx;break;
        case 1:reg=regs::ecx;break;
        case 2:reg=regs::edx;break;
        case 6:reg=regs::ebp;break;
        case 7:reg=regs::edi;break;
            default:reg=regs::invalid;
        }
        if(reg!=regs::invalid)break;
        }
        pos+=1;
    }
    if(reg==regs::invalid)return false;
    switch(pos-processStartAddress){
        case 0x9f723:
        //Robotics;Notes-Elite
        gametype=1;
        break;
        case 0xf70a6:
        //Robotics;Notes-Dash
        gametype=2;
        break;
        
        default:
        //YU-NO
        //测试无效：
        //Steins;Gate-0
        //Steins;Gate
        //未测试：
        //Steins;Gate-Elite
        //Chaos;Child
        //CHAOS;HEAD_NOAH
        //Memories_Off_-Innocent_Fille
        //Memories_Off_-Innocent_Fille-_for_Dearest
        gametype=0;
    }
    //ConsoleOutput("%x",pos-processStartAddress);
    HookParam hp;
    //hp.address = hookaddr;
    hp.address=hookaddr; 
    //想い出にかわる君 ～メモリーズオフ～ 想君：秋之回忆3在hookaddr上无法正确读取。
    //hookaddr上是没有重复的，pos上是都能读到但有重复。
    hp.text_fun = SpecialHookMAGES<0>;
    hp.type = CODEC_UTF16 | USING_STRING|NO_CONTEXT;
    auto _=NewHook(hp, "5pb_MAGES");
    hp.address=pos;
    hp.text_fun = SpecialHookMAGES<1>;
    _|=NewHook(hp, "5pb_MAGES");
    return _;

#else

    auto dialogSigOffset = 2;
    BYTE dialogSig1 []={
        0x85,XX,0x74,XX,0x41,0x83,XX,0x01,0x74,XX,0x41,0x83,XX,0x04,0x74,XX,0x41
    };
    auto addr=MemDbg::findBytes(dialogSig1,sizeof(dialogSig1),processStartAddress,processStopAddress);
    ConsoleOutput("%p",addr);
    if(addr==0)return false;
    auto pos = addr+dialogSigOffset; 
    auto jzoff=*(BYTE*)(pos+1);
    pos+=jzoff+2;
    auto hookaddr=pos;
    //
    for(int i=0;i<0x200;i++){
        //.text:000000014004116B 0F B6 13                      movzx   edx, byte ptr [rbx]
        //->rbx 
        if((((*(DWORD*)(pos))&0xffffff)==0x13b60f)){
            reg=regs::rbx;//rbx
            //ConsoleOutput("%p",pos-processStartAddress);
            break;
        }
        pos+=1;
    }
    if(reg==regs::invalid)return false;
    switch(pos-processStartAddress){
        
        default: 
        //CHAOS;HEAD_NOAH 
        gametype=0;
    }
    HookParam hp;
    hp.address=hookaddr;
    hp.text_fun = SpecialHookMAGES<0>;
    hp.type = CODEC_UTF16 | USING_STRING|NO_CONTEXT;
    return NewHook(hp, "5pb_MAGES");


#endif
}


}