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customextension_id_generator

/*

* Simple MD5 implementation
*
* Compile with: gcc -o md5 -O3 -lm md5.c
*/

1. include <stdio.h>
2. include <stdlib.h>
3. include <string.h>
4. include <stdint.h>

uint32_t crc32_for_byte(uint32_t r) {

   for (int j = 0; j < 8; ++j)
       r = (r & 1 ? 0 : (uint32_t)0xEDB88320L) ^ r >> 1;
   return r ^ (uint32_t)0xFF000000L;

}

void crc32(const void *data, size_t n_bytes, uint32_t* crc) {

   static uint32_t table[0x100];
   if (!*table)
       for (size_t i = 0; i < 0x100; ++i)
           table[i] = crc32_for_byte(i);
   for (size_t i = 0; i < n_bytes; ++i)
       *crc = table[(uint8_t)*crc ^ ((uint8_t*)data)[i]] ^ *crc >> 8;

}

// leftrotate function definition

1. define LEFTROTATE(x, c) (((x) << (c)) | ((x) >> (32 - (c))))

// These vars will contain the hash uint32_t h0, h1, h2, h3;

void md5(const char* initial_msg, size_t initial_len) {

   // Message (to prepare)
   uint8_t *msg = NULL;

   // Note: All variables are unsigned 32 bit and wrap modulo 2^32 when calculating

   // r specifies the per-round shift amounts

   uint32_t r[] = { 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
                   5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20,
                   4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
                   6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21 };

   // Use binary integer part of the sines of integers (in radians) as constants// Initialize variables:
   uint32_t k[] = {
       0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
       0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
       0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
       0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
       0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
       0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
       0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
       0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
       0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
       0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
       0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
       0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
       0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
       0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
       0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
       0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391 };

   h0 = 0x67452301;
   h1 = 0xefcdab89;
   h2 = 0x98badcfe;
   h3 = 0x10325476;

   // Pre-processing: adding a single 1 bit
   //append "1" bit to message    
   /* Notice: the input bytes are considered as bits strings,
      where the first bit is the most significant bit of the byte.[37] */

      // Pre-processing: padding with zeros
      //append "0" bit until message length in bit ? 448 (mod 512)
      //append length mod (2 pow 64) to message

   int new_len;
   for (new_len = initial_len * 8 + 1; new_len % 512 != 448; new_len++);
   new_len /= 8;

   msg = (uint8_t*)calloc(new_len + 64, 1); // also appends "0" bits 
                                  // (we alloc also 64 extra bytes...)
   memcpy(msg, initial_msg, initial_len);
   msg[initial_len] = 128; // write the "1" bit

   uint32_t bits_len = 8 * initial_len; // note, we append the len
   memcpy(msg + new_len, &bits_len, 4);           // in bits at the end of the buffer

   // Process the message in successive 512-bit chunks:
   //for each 512-bit chunk of message:
   int offset;
   for (offset = 0; offset < new_len; offset += (512 / 8)) {

       // break chunk into sixteen 32-bit words w[j], 0 ? j ? 15
       uint32_t *w = (uint32_t *)(msg + offset);

1. ifdef DEBUG

       printf("offset: %d %x\n", offset, offset);

       int j;
       for (j = 0; j < 64; j++) printf("%x ", ((uint8_t *)w)[j]);
       puts("");

1. endif

       // Initialize hash value for this chunk:
       uint32_t a = h0;
       uint32_t b = h1;
       uint32_t c = h2;
       uint32_t d = h3;

       // Main loop:
       uint32_t i;
       for (i = 0; i < 64; i++) {

1. ifdef ROUNDS

           uint8_t *p;
           printf("%i: ", i);
           p = (uint8_t *)&a;
           printf("%2.2x%2.2x%2.2x%2.2x ", p[0], p[1], p[2], p[3], a);

           p = (uint8_t *)&b;
           printf("%2.2x%2.2x%2.2x%2.2x ", p[0], p[1], p[2], p[3], b);

           p = (uint8_t *)&c;
           printf("%2.2x%2.2x%2.2x%2.2x ", p[0], p[1], p[2], p[3], c);

           p = (uint8_t *)&d;
           printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], d);
           puts("");

1. endif

           uint32_t f, g;

           if (i < 16) {
               f = (b & c) | ((~b) & d);
               g = i;
           }
           else if (i < 32) {
               f = (d & b) | ((~d) & c);
               g = (5 * i + 1) % 16;
           }
           else if (i < 48) {
               f = b ^ c ^ d;
               g = (3 * i + 5) % 16;
           }
           else {
               f = c ^ (b | (~d));
               g = (7 * i) % 16;
           }

1. ifdef ROUNDS

           printf("f=%x g=%d w[g]=%x\n", f, g, w[g]);

1. endif

           uint32_t temp = d;
           d = c;
           c = b;
           //printf("rotateLeft(%x + %x + %x + %x, %d)\n", a, f, k[i], w[g], r[i]);
           b = b + LEFTROTATE((a + f + k[i] + w[g]), r[i]);
           a = temp;
       }

       // Add this chunk's hash to result so far:

       h0 += a;
       h1 += b;
       h2 += c;
       h3 += d;

   }

   // cleanup
   free(msg);

}

void calc(const char* msg) {

   size_t len = strlen(msg);
   md5(msg, len);

   //var char digest[16] := h0 append h1 append h2 append h3 //(Output is in little-endian)
   uint8_t *p;

   // display result
   unsigned char* buf = new unsigned char[16];

   printf("string: %s\n", msg);
   printf("md5: ");

   p = (uint8_t *)&h0;
   printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h0);
   buf[0] = p[0];
   buf[1] = p[1];
   buf[2] = p[2];
   buf[3] = p[3];

   p = (uint8_t *)&h1;
   printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h1);
   buf[4] = p[0];
   buf[5] = p[1];
   buf[6] = p[2];
   buf[7] = p[3];

   p = (uint8_t *)&h2;
   printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h2);
   buf[8] = p[0];
   buf[9] = p[1];
   buf[10] = p[2];
   buf[11] = p[3];

   p = (uint8_t *)&h3;
   printf("%2.2x%2.2x%2.2x%2.2x", p[0], p[1], p[2], p[3], h3);
   buf[12] = p[0];
   buf[13] = p[1];
   buf[14] = p[2];
   buf[15] = p[3];

   uint32_t calculated_crc;
   crc32(buf, 16, &calculated_crc);

   printf(" crc: %08x\n", calculated_crc);

}

int main(int argc, char **argv) {

   calc("TestControl1");
   calc("TestControl2");
   calc("TestControl3");
   calc("TestControl4");

   calc("TestCommand1");
   calc("TestCommand2");
   calc("TestCommand3");
   calc("TestCommand4");

   calc("TestCommandTest1");
   calc("TestCommandTest2");
   calc("TestCommandTest3");
   calc("TestCommandTest4");

   calc("CommandTest1");
   calc("CommandTest2");
   calc("CommandTest3");
   calc("CommandTest4");

   return 0;

}

---

TemplateContainer.cpp

1. include "TemplateContainer.h"

1. include "CustomExtensionFactory.h"

1. ifdef GUILIANI_STREAM_GUI
2. include "GUIStreamReader.h"
3. endif

1. ifdef GUILIANI_WRITE_GUI
2. include "GUIStreamWriter.h"
3. include "GUIControlResource.h"
4. endif

1. include "GUIFactoryManager.h"
2. include "GUIResourceFileHandler.h"

1. ifdef STREAMRUNTIME_APPLICATION
2. include "GUIStreamReaderXML.h"
3. endif

1. include "GfxWrap.h"

1. include "GUIMemLeakWatcher.h" // <-- has to be the last include

1. define TEMPLATECONTAINER_VERSION 1

static const eC_Int TEMPLATECONTAINER = 10001;

eC_Bool TemplateContainer::ms_bInitialized = GETEXTENSIONSFACTORY->RegisterControl(ControlDescriptor(TEMPLATECONTAINER, "TemplateContainer", TemplateContainer::Create));

TemplateContainer::TemplateContainer(

   CGUICompositeObject *const pParent,
   const eC_Value &vX, const eC_Value &vY,
   const eC_Value &vWidth, const eC_Value &vHeight,
   const ObjectHandle_t &eID) :
   CGUICompositeObject(pParent, vX, vY, vWidth, vHeight, eID)

{

   Init();

}

TemplateContainer::TemplateContainer() :

   CGUICompositeObject()

{

   Init();

}

void TemplateContainer::Init() {

   SetXMLTag("TemplateContainer");

   m_pkContainer = NULL;

1. ifdef STREAMRUNTIME_APPLICATION

   CGUIStreamReaderXML kReader;
   try
   {
       CGUIObject* pkObject = GETFACTORY.LoadDialogFromFile("Template");
       if (
           (NULL != pkObject) &&
           (pkObject->IsCompositeObject())
           )
       {
           m_pkContainer = dynamic_cast<CGUICompositeObject*>(pkObject);
           if (NULL != m_pkContainer)
               m_pkContainer->SetParent(this);
       }
   }
   catch (...)
   {
   }

1. else

   // different behaviour when in GSE
   CGUIStreamReaderXML kReader;

1. endif

}

eC_Bool TemplateContainer::DoDraw() {

   if (NULL != m_pkContainer)
   {
       m_pkContainer->DoDraw();
   }
   else
   {
       GETGFX.SetForegroundColor(0xff44ff11);
       GETGFX.FilledRect(GetAbsRect());

       GETGFX.SetForegroundColor(0xffff66aa);
       GETGFX.SetLineWidth(eC_FromInt(2));
       GETGFX.Line(GetAbsRect());
       GETGFX.Line(CGUIRect(GetAbsXPosREdge(), GetAbsYPos(), GetAbsXPos(), GetAbsYPosBEdge()));
   }
   return true;

}

1. if defined(GUILIANI_STREAM_GUI)

void TemplateContainer::ReadFromStream() {

   const eC_UInt cuiVersion = ReadStreamingHeader( TEMPLATECONTAINER_VERSION);

   // always stream attributes of base-class first to retain order in attribute-view!
   CGUIObject::ReadFromStream();

   switch (cuiVersion)
   {
   case 1:
       // ************************************************************
       // NOTE:    Insert custom attribute read calls here.
       // ************************************************************
       break;
   default:
       break;
   }

}

1. endif

1. if defined(GUILIANI_WRITE_GUI)

void TemplateContainer::WriteToStream(const eC_Bool bWriteClassID) {

   WriteStreamingHeader( bWriteClassID, XMLTAG_CONTROLCLASSID, TEMPLATECONTAINER, TEMPLATECONTAINER_VERSION);

   // always stream attributes of base-class first to retain order in attribute-view!
   CGUIObject::WriteToStream();

   // ************************************************************
   // NOTE:    Insert custom attribute write calls here.
   // ************************************************************

   WriteStreamingFooter( bWriteClassID );

}

1. endif

TemplateContainer.h

1. if !defined(TEMPLATECONTAINER_H)
2. define TEMPLATECONTAINER_H

1. include "GUICompositeObject.h"

class TemplateContainer : public CGUICompositeObject { public:

   TemplateContainer(
       CGUICompositeObject *const pParent,
       const eC_Value &vX, const eC_Value &vY,
       const eC_Value &vWidth, const eC_Value &vHeight,
       const ObjectHandle_t &eID = NO_HANDLE);

   TemplateContainer();

   // method used by the factory to create new instance
   static CGUIObject* Create()
   {
       return new TemplateContainer();
   }
   

1. if defined(GUILIANI_STREAM_GUI)

   /** Reads all attributes from streaming file.
       This method is called by CGUIFactoryManager after one of the registered
       factories has created an instance of this class.
   */
   virtual void ReadFromStream();

1. endif

1. if defined(GUILIANI_WRITE_GUI)

   /** Writes all attributes to the streaming file. A CGUIStreamWriter
       has to be initialized first.
       @param bWriteClassID This flag is used to select if writing of control
              class ID, leading and trailing tags is performed.
   */
   virtual void WriteToStream(const eC_Bool bWriteClassID = false);

1. endif

   virtual eC_Bool DoDraw();

   void Init();

private:

   static eC_Bool ms_bInitialized;

   CGUICompositeObject* m_pkContainer;

};

1. endif // TEMPLATECONTAINER_H