cehook.dpr.svn-base

这是一段游戏修改工具的源代码.ring3功能由dephi开发,驱动是C开发.希望对大家有帮助

    if st<>nil then
      RemoverangeWith(dword(@st.x));

    if htw<>nil then
      RemoverangeWith(dword(@htw.x));

    RemoverangeWith(dword(@Removerangewith));

    //if everything went ok memoryregions should now contain all the addresses and sizes
    //to speed it up combine the regions that are attached to eachother.

    j:=0;
    address:=memoryregion[0].BaseAddress;
    size:=memoryregion[0].MemorySize;

    for i:=1 to memoryregions-1 do
    begin
      if memoryregion[i].BaseAddress=address+size then
        inc(size,memoryregion[i].MemorySize)
      else
      begin
        memoryregion[j].BaseAddress:=address;
        memoryregion[j].MemorySize:=size;

        address:=memoryregion[i].BaseAddress;
        size:=memoryregion[i].MemorySize;
        inc(j);
      end;
    end;

    memoryregion[j].BaseAddress:=address;
    memoryregion[j].MemorySize:=size;

    memoryregions:=j+1;
    setlength(memoryregion,memoryregions);

    //re-added due to complaints about speed:
    //split up into smaller chunks
    if scansettings^.buffersize>0 then
    begin
      i:=0;
      while i<=memoryregions-1 do
      begin
        if memoryregion[i].MemorySize>dword(buffersize) then
        begin
          inc(memoryregions);
          setlength(memoryregion,memoryregions);

          //copy the next element to the back, and split up the current one
          //(unless this is the item at the back, and not needed)
          if i<memoryregions-2 then
          begin
            //i isnt the last element of the array so do a semi-shift
            memoryregion[memoryregions-1].BaseAddress:=memoryregion[i+1].baseaddress;
            memoryregion[memoryregions-1].MemorySize:=memoryregion[i+1].MemorySize;
          end;

          memoryregion[i+1].IsChild:=true;
          if scansettings^.fastscan then
            case scansettings^.ValueType of
              1:
              begin  //word
                memoryregion[i+1].BaseAddress:=memoryregion[i].BaseAddress+buffersize-1;
                memoryregion[i+1].MemorySize:=memoryregion[i].MemorySize-buffersize+1;
              end;

              2,3:
              begin  //dword+float
                memoryregion[i+1].BaseAddress:=memoryregion[i].BaseAddress+buffersize-3;
                memoryregion[i+1].MemorySize:=memoryregion[i].MemorySize-buffersize+3;
              end;

              4,6:
              begin  //double+int64
                memoryregion[i+1].BaseAddress:=memoryregion[i].BaseAddress+buffersize-7;
                memoryregion[i+1].MemorySize:=memoryregion[i].MemorySize-buffersize+7;
              end;
              else
              begin
                memoryregion[i+1].BaseAddress:=memoryregion[i].BaseAddress+buffersize;
                memoryregion[i+1].MemorySize:=memoryregion[i].MemorySize-buffersize;
              end;
            end
          else
          begin
            memoryregion[i+1].BaseAddress:=memoryregion[i].BaseAddress+buffersize;
            memoryregion[i+1].MemorySize:=memoryregion[i].MemorySize-buffersize;
          end;

          memoryregion[i].MemorySize:=buffersize;
        end;
        inc(i);
      end;
      dec(memoryregions);
    end else memoryregions:=j;

    if scansettings^.fastscan then
    begin
      //optimize regions
      for i:=0 to memoryregions do
      //make it so the regions all start at a location that can be devided by the size of the valtype
        case scansettings^.ValueType of
          1:
          begin  //word (mod 2=0)
            j:=(memoryregion[i].BaseAddress mod 2);
            if j<>0 then
              if memoryregion[i].IsChild then
              begin
                memoryregion[i].BaseAddress:=memoryregion[i].BaseAddress-j;
                inc(memoryregion[i].MemorySize,j);
              end
              else
              begin
                memoryregion[i].BaseAddress:=memoryregion[i].BaseAddress+j;
                dec(memoryregion[i].MemorySize,j);
              end;
          end;

          2,3:
          begin  //dword+float
            j:=(memoryregion[i].BaseAddress mod 4);
            if j<>0 then
              if memoryregion[i].IsChild then
              begin
                memoryregion[i].BaseAddress:=memoryregion[i].BaseAddress-j;
                inc(memoryregion[i].MemorySize,j);
              end
              else
              begin
                memoryregion[i].BaseAddress:=memoryregion[i].BaseAddress+4-j;
                dec(memoryregion[i].MemorySize,4-j);
              end;
          end;

          4,6:
          begin //double+int64
            j:=(memoryregion[i].BaseAddress mod 8);
            if j<>0 then
              if memoryregion[i].IsChild then
              begin
                memoryregion[i].BaseAddress:=memoryregion[i].BaseAddress-j;
                inc(memoryregion[i].MemorySize,j);
              end
              else
              begin
                memoryregion[i].BaseAddress:=memoryregion[i].BaseAddress+8-j;
                dec(memoryregion[i].MemorySize,8-j);
              end;
          end;
        end;
    end;

    TotalToRead:=0;
    For i:=0 to Memoryregions do
      inc(TotalToRead,Memoryregion[i].MemorySize);
    postmessage(scansettings^.formscanningHandle,ESSetProgressbarMax,TotalToRead,TotalToRead);
  except
    on e: exception do
    begin
      outputdebugstring(pchar(e.Message));
      raise e;
    end;

  end;

//  for i:=0 to length(exclude)-1 do   RemoveRangewith(exclude[i]);

  //  showmessage('TotalToRead='+IntToStr(totaltoread));
end;

{procedure foundone;
begin
  //inc(form1.c);
  //showmessage(IntToHex(foundaddress,8));
end;

procedure ScanByte(scanvalue:byte;startaddress:dword;ammount: dword);
label done;
asm
  mov edx,startaddress
  mov ecx,ammount
  mov ah,scanvalue

@looper:

  cmp byte ptr [edx],ah
  je @_foundone
@continue_looper:
  inc edx
  loop @looper
  jmp done

@_foundone:
  push eax
  push ecx
  push edx
  mov foundaddress,edx
  call foundone
  pop edx
  pop ecx
  pop eax
  jmp @continue_looper

done:
end;}

function ExactValueFirstScan:integer;
var mbi : _MEMORY_BASIC_INFORMATION;
    address: Dword;
    size:       dword;

    found: dword;

    Decim:       dword;
    Decimhelp:   Integer;

    ByteValue,ByteValue2: Byte;
    WordValue,WordValue2: Word;
    DWordValue,dwordvalue2: Dword;
    SingleValue,singlevalue2: Single;
    doubleValue,doublevalue2: double;
    Int64Value,int64value2: Int64;
    helpsingle,helpsingle2,helpsingle3: single;
    helpdouble,helpdouble2,helpdouble3: double;

    i,k,l: integer;
    j: dword;

    actualread: dword;
    actualwrite: dword;


    //save variables
    dataType:  String[6];  //REGION or NORMAL  (Always region in this procedure)


    CharToFind: Dword;
    memoryposition: Dword;
    position: Dword;
    searching: Boolean;

    scanlength: Dword;

    check:    boolean;

    MPoint: ^Byte;

    ByteP: pbyte;
    bytep2: pbyte;
    WordP: ^Word;
    DwordP: ^Dword;
    Int64P: ^Int64;

    SingleP: ^Single;
    DoubleP: ^double;

    helpword: word;
    helpdworD: dword;


    number: dword;
    maxmem: dword;

    FoundIsFilled: Boolean;

    //arrayofbyte vars
    nrofbytes: dword;
    bytes: TBytes;  //-1=wildcard

    BitToFind: integer;

    traceback: boolean;

    resulthelper: tfilestream;
    tempstring: pchar;

    scanvalue:string;
    scantype: Integer;
    vartype: integer;
    extra: boolean;
    roundingtype: tfloatscan;
    unicode: boolean;
    unicode2: boolean;

    scanvalue2: string;
begin
  lastscan:=0;
  bytevalue:=$90;
  wordvalue:=$1020;
  dwordvalue:=$30405060;
  singlevalue:=123.12345;
  doublevalue:=12345.123;
  int64value:=$1122334455667788;

  try
    GetMemoryRanges([dword(@dwordvalue)]);
   // RemoveRangewith(dword(@dwordvalue));

  except
     raise exception.Create('getmemoryexception');
  end;
  position:=0;
  nrofbits:=999;

  Int64Value:=0;
  FoundIsFilled:=false;

 // setlength(memory,splitvalue+1);
  found:=0;
  scanvalue:=scansettings^.scanvalue;
  scanvalue2:=scansettings^.scanvalue2;
  scantype:=scansettings^.Scantype;
  vartype:=scansettings^.ValueType;
  extra:=scansettings^.Hexadecimal;
  roundingtype:=scansettings^.roundingtype;
  unicode:=scansettings^.unicode;

  if scanvalue='' then scanvalue:='0';
  if scanvalue2='' then scanvalue2:='0';

  if scantype in [Exact_value,Increased_value_by,decreased_value_by,SmallerThan,BiggerThan,valuebetween] then
  begin
    if vartype=0 then
    begin
      if extra then val('$'+scanvalue,bytevalue,i)
               else val(scanvalue,bytevalue,i);
      if i>0 then raise Exception.Create(scanvalue+' is not a valid byte notation');
    end;

    if vartype=1 then
    begin
      if extra then val('$'+scanvalue,wordvalue,i)
               else val(scanvalue,wordvalue,i);
      if i>0 then raise Exception.Create(scanvalue+' is not an valid 2-byte notation');
    end;

    if vartype=2 then
    begin
      if extra then val('$'+scanvalue,dwordvalue,i)
               else val(scanvalue,dwordvalue,i);
      if i>0 then raise Exception.Create(scanvalue+' is not an valid 4-byte notation');
    end;

    if vartype=3 then //doesnt have the hexadecimal option
    begin
      val(scanvalue,singlevalue,i);
      if i>0 then
        if scanvalue[i]=',' then scanvalue[i]:='.';

      val(scanvalue,singlevalue,i);
      if i>0 then raise Exception.Create(scanvalue+' is not a valid floating point notation');
    end;

    if vartype=4 then //same as 3
    begin
      val(scanvalue,doublevalue,i);
      if i>0 then
        if scanvalue[i]=',' then scanvalue[i]:='.';
      val(scanvalue,singlevalue,i);

      if i>0 then raise Exception.create(scanvalue+' is not a valid floating point notation');
    end;

    if vartype=5 then
    begin
      if pos('-',scanvalue)>0 then raise exception.create(scanvalue+' is not a valid notation!');
      if not extra then
      begin
        setlength(bitscan,length(scanvalue));
        j:=0;
        for i:=length(scanvalue) downto 1 do
        begin
          if scanvalue[i]='0' then bitscan[length(scanvalue)-i]:=0
          else
          if scanvalue[i]='1' then bitscan[length(scanvalue)-i]:=1
          else
          if scanvalue[i]='?' then bitscan[length(scanvalue)-i]:=2
          else
          if scanvalue[i]='*' then bitscan[length(scanvalue)-i]:=2
          else
          begin
            freememory;
            raise Exception.create(scanvalue+' is not a valid binary notation');
          end;
          inc(j);
        end;
      end
      else
      begin
        try
          dwordvalue:=StrToInt(scanvalue);
          i:=0;

          if dwordvalue=0 then
          begin
            setlength(bitscan,1);
            bitscan[0]:=0;
          end
          else
          while dwordvalue>0 do
          begin
            setlength(bitscan,i+1);

            if (dwordvalue mod 2)>0 then bitscan[i]:=1
                                    else bitscan[i]:=0;

            inc(i);
            dwordvalue:=dwordvalue div 2;
          end;
        except
          raise Exception.create(scanvalue+' is not a valid notation');
        end;
      end;

      nrofbits:=length(bitscan);
      scansettings^.nrofbits:=nrofbits;
      if nrofbits=0 then raise exception.Create(scanvalue+' did not result in a string of bits');
    end;

    if vartype=6 then
    begin
      if extra then
        val('$'+scanvalue,int64value,i)
      else
        val(scanvalue,Int64value,i);
      if i>0 then raise Exception.Create(scanvalue+' is not an valid 8-byte notation');
    end;
  end;