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GMZorita
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 Posted: Wed Jun 04, 2008 2:11 pm Post subject: [Request] Help with bytes from editbox C++ |
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ok so example:
My editbox text is : "8D 04 83 7D FF 09 9F"
I need to output it as a hex string which im going to store into a adress from my process, i need help with making that function =/ anyone can help me?
i would output (9f09ff7d83048d or 8d04837dff099f) im not sure about that
Any one know what i should use :s? Thank you soo mutch~.
Edit1: Using Borland Developer Studio 2006 / C++
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--Pillboi--
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Location: I don't understand the question. Is this a 1 to 10 thing?
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| Posted: Wed Jun 04, 2008 2:44 pm Post subject: |
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What? Please clarify.
You want to convert that to hex and store it in a string?
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GMZorita
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| Posted: Wed Jun 04, 2008 3:59 pm Post subject: |
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| --Pillboi-- wrote: | What? Please clarify.
You want to convert that to hex and store it in a string? |
No i want to convert from string to hex, the string will be like bytes "FF 00 0A 04"
@x0r: Would you give me a example?
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atom0s
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| Posted: Wed Jun 04, 2008 4:30 pm Post subject: |
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Taken from: Tiny Encryption Algorithm
Some functions from various files.
| Code: | #pragma once
#include <string>
#include <cstdlib>
#include <vector>
using namespace std;
/////////////////////////////////////////////////////////////////////////////////////
/*
* hexStringToBytes [Original Function]
* Taken From: TEA (Tiny Encryption Algorithm)
* Found In File: util.cpp
*
/////////////////////////////////////////////////////////////////////////////////////
size_t hexStringToBytes(const string &str, byte *out)
{
vector<string> vec;
string::size_type currPos = 0, prevPos = 0;
while ((currPos = str.find(' ', prevPos)) != string::npos) {
string b(str.substr(prevPos, currPos - prevPos));
vec.push_back(b);
prevPos = currPos + 1;
}
if (prevPos < str.size()) {
string b(str.substr(prevPos));
vec.push_back(b);
}
typedef vector<string>::size_type sz_type;
sz_type size = vec.size();
for (sz_type i = 0; i < size; ++i) {
int a = hexCharToInt(vec[i][0]);
int b = hexCharToInt(vec[i][1]);
out[i] = a * 16 + b;
}
return size;
}
*/
/////////////////////////////////////////////////////////////////////////////////////
//
// Function: hexCharToInt
// Returns : int
// Purpose : Converts a hex character to is numeric value.
//
// This function is taken from the TEA(Tiny Encryption Algorithm) library.
// You can find this function in the util.cpp file.
//
int hexCharToInt(char hex)
{
hex = toupper( hex );
if( isdigit( hex ) )
return( hex - '0' );
if( isalpha( hex ) )
return( hex - 'A' + 10 );
return 0;
}
//
// Function: hexStringToBytes
// Returns : size_t
// Purpose : Converts a hex string to the proper bytes.
//
// This function is based on the above function from the TEA
// encryption library. I have basically rewritten the whole
// function to be used the way I saw fit but I am leaving
// credits where they are due. :) ~Wiccaan
//
size_t hexStringToBytes(const string &str, byte *out)
{
vector<string> vec;
int iCurrPos = 2;
int iPrevPos = 0;
for( int x=0; x < (int)str.size(); x+=2, iCurrPos+=2 )
{
string b( str.substr(iPrevPos,iCurrPos-iPrevPos) );
vec.push_back(b);
iPrevPos = iCurrPos;
}
int size = (int)vec.size();
for( int i = 0; i < size; ++i )
{
int a = hexCharToInt( vec[i][0] );
int b = hexCharToInt( vec[i][1] );
out[i] = a * 16 + b;
}
return size;
}
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Example usage:
| Code: | void GetStringFromBox( HWND hWnd )
{
//
// Obtain Hex String Length
//
int iStringLength = NULL;
iStringLength = (int)SendMessage( GetDlgItem(hWnd,IDC_HEXSTRING), WM_GETTEXTLENGTH, (WPARAM)0, (LPARAM)0 );
//
// Make Sure We Are Even
//
if( iStringLength%2 != 0 )
{
MessageBox( hWnd, "You have entered an invalid string. It appears you missed some characters.", "ERROR!", MB_OK );
return;
}
//
// Create Buffers For Our String And Byte Array
//
// String is full length of itself, the byte array
// is half of the string since you are converting
// every 2 bytes into a hex character.
//
char* szBuffer = new char[iStringLength+1];
BYTE* btBuffer = new BYTE[(iStringLength/2)+1];
//
// Pull Text From Textbox
//
GetDlgItemText( hWnd, IDC_HEXSTRING, szBuffer, iStringLength+1 );
//
// Convert String To Bytes
//
hexStringToBytes(szBuffer, btBuffer);
//
// This is for checking if the convert was successful.
// VS wont show you more then the first byte of the array in the watch window.
//
for(int x=0;x<(iStringLength/2); x++)
btBuffer[x]=btBuffer[x];
//
// Anything you wish to do with the byte array should take place here
// or you can copy it to an external array and handle things elsewhere
// just be sure to let this function finish and delete the arrays when
// it's done or you will run into memory leaks!
//
//
// Delete Arrays When We Are Done With Them
//
delete[] btBuffer;
delete[] szBuffer;
} |
Hope it helps.
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