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      1 #define LOG_TAG "NfcNciHal"
      2 #include "OverrideLog.h"
      3 #include "spdhelper.h"
      4 #include "config.h"
      5 
      6 void SpdHelper::setPatchAsBad()
      7 {
      8     getInstance().setPatchAsBadImpl();
      9 }
     10 
     11 void SpdHelper::incErrorCount()
     12 {
     13     getInstance().incErrorCountImpl();
     14 }
     15 
     16 bool SpdHelper::isPatchBad(UINT8* prm, UINT32 len)
     17 {
     18     return getInstance().isPatchBadImpl(prm, len);
     19 }
     20 
     21 bool SpdHelper::isSpdDebug()
     22 {
     23     bool b = getInstance().isSpdDebugImpl();
     24     ALOGD("%s SpdDebug is %s", __func__, (b ? "TRUE" : "FALSE"));
     25     return b;
     26 }
     27 
     28 void SpdHelper::incErrorCountImpl()
     29 {
     30     if (++mErrorCount >= mMaxErrorCount)
     31     {
     32         setPatchAsBadImpl();
     33     }
     34 }
     35 
     36 void SpdHelper::setPatchAsBadImpl()
     37 {
     38     mIsPatchBad = true;
     39 }
     40 
     41 inline const char * toHex(UINT8 b)
     42 {
     43     static char hex[] = "0123456789ABCDEF";
     44     static char c[3];
     45     c[0] = hex[((b >> 4) & 0x0F)];
     46     c[1] = hex[((b >> 0) & 0x0F)];
     47     c[2] = '\0';
     48     return &c[0];
     49 }
     50 
     51 bool SpdHelper::isPatchBadImpl(UINT8* prm, UINT32 len)
     52 {
     53     string strNew;
     54 
     55     // Get the patch ID from the prm data.
     56     for (int i = 0; i < 8 && i < len; ++i)
     57         strNew.append(toHex(*prm++));
     58 
     59     // If it is not the same patch as before, then reset things.
     60     if ( strNew != mPatchId )
     61     {
     62         mPatchId = strNew;
     63         mErrorCount = 0;
     64         mIsPatchBad = false;
     65     }
     66 
     67     // Otherwise the 'mIsPatchBad' will tell if its bad or not.
     68     ALOGD("%s '%s' (%d) is %sa known bad patch file", __func__, mPatchId.c_str(), mErrorCount, (mIsPatchBad ? "" : "not "));
     69 
     70     return mIsPatchBad;
     71 }
     72 
     73 SpdHelper& SpdHelper::getInstance()
     74 {
     75     static SpdHelper* theInstance = NULL;
     76     if (theInstance == NULL)
     77         theInstance= new SpdHelper;
     78     return *theInstance;
     79 }
     80 
     81 SpdHelper::SpdHelper()
     82 {
     83     mErrorCount = 0;
     84     mPatchId.erase();
     85     if(!GetNumValue((char*)NAME_SPD_MAXRETRYCOUNT, &mMaxErrorCount, sizeof(mMaxErrorCount)))
     86         mMaxErrorCount = DEFAULT_SPD_MAXRETRYCOUNT;
     87     if (!GetNumValue((char*)NAME_SPD_DEBUG, &mSpdDebug, sizeof(mSpdDebug)))
     88         mSpdDebug = false;
     89 }
     90