cSystemFakeNDS Class Reference

Inheritance diagram for cSystemFakeNDS:

List of all members.

Public Member Functions
	cSystemFakeNDS (void)
	~cSystemFakeNDS ()
virtual bool	ProcessECM (const cEcmInfo *ecm, unsigned char *data)

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Detailed Description

Definition at line 37 of file fake-nds.c.

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Constructor & Destructor Documentation

cSystemFakeNDS::cSystemFakeNDS

(

void

)

Definition at line 49 of file fake-nds.c.

References cSystem::cw.

:cSystem(SYSTEM_NAME,SYSTEM_PRI)
{
  fm=0; mapMD5ok=false;
  memset(cw,0,sizeof(cw));
}

cSystemFakeNDS::~cSystemFakeNDS

(

)

Definition at line 56 of file fake-nds.c.

References cFileMap::Unmap().

{
  if(fm) fm->Unmap();
}

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Member Function Documentation

bool cSystemFakeNDS::ProcessECM	(	const cEcmInfo *	ecm,
		unsigned char *	data
	)		[virtual]

Implements cSystem.

Definition at line 80 of file fake-nds.c.

References cFileMap::Addr(), cSystem::cw, cSystem::doLog, hash, L_SYS_ECM, PRINTF, SCT_LEN, and xxor.

{
  int len=SCT_LEN(data);
  if(len<7 || data[3]!=0x00 || data[4]!=0x00 || data[5]!=0x01) {
    if(doLog) PRINTF(L_SYS_ECM,"ECM format check failed");
    return false;
    }
  int iLen=data[6];
  if(iLen+6>len || iLen<0x1C) {
    if(doLog) PRINTF(L_SYS_ECM,"IRD block length check failed");
    return false;
    }

  int block1, block2, block3, block4, cwoff;
  if(iLen==0x1C && data[6+11]==0x0F && data[6+12]==0x40) { // PW
    // check cw in IRD block
    if(!(data[6+9]&1) || !(data[6+10]&16)) {
      if(doLog) PRINTF(L_SYS_ECM,"no CW in IRD block");
      return false;
      }
    static const unsigned char app10039[] = { 0xff,0x25,0x38,0x51,0xec,0xcb,0xc8,0xfa,0xab,0x97,0x59,0x15,0x4d,0x14,0x05,0xfa };
    if(!MapFlash("PR-HD1000_060000.bin",0x2603c0,app10039)) return false;
    block1=1;
    block2=23;
    block3=0x22D344;
    block4=0x25c620;
    cwoff=14;
    }
  else if(iLen==0x21 && data[6+14]==0x0F && data[6+15]==0x40) { // VIASAT
    static const unsigned char apppace[] = { 0x23,0x21,0xc3,0xe0,0xc1,0xce,0xed,0xb4,0x4b,0xd6,0xa4,0xc7,0x44,0x61,0xda,0x0e };
    if(!MapFlash("VIA-Pace4_060000.bin",0x2BA600,apppace)) return false;
    block1=1;
    block2=26;
    block3=0x28cb08;
    block4=0x2b5318;
    cwoff=17;
    }
  else {
    if(doLog) PRINTF(L_SYS_ECM,"failed to detect provider");
    return false;
    }

  unsigned char hash[94], md[16];
  memcpy(&hash[0],&data[6+block1],10);
  memcpy(&hash[10],&data[6+block2],4);
  memcpy(&hash[14],fm->Addr()+block3,64);
  memcpy(&hash[78],fm->Addr()+block4,16);
  MD5(hash,94,md);
  xxor(cw+((data[0]&1)<<3),8,&data[6+cwoff],&md[8]);
  return true;
}

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The documentation for this class was generated from the following file:

• sc/PLUGINS/src/sc-src/systems/nds/fake-nds.c