The Android Open Source Project | e9df6ba | 2012-12-13 14:55:37 -0800 | [diff] [blame^] | 1 | #include "OverrideLog.h" |
| 2 | #include "spdhelper.h" |
| 3 | #include "config.h" |
| 4 | |
| 5 | void SpdHelper::setPatchAsBad() |
| 6 | { |
| 7 | getInstance().setPatchAsBadImpl(); |
| 8 | } |
| 9 | |
| 10 | void SpdHelper::incErrorCount() |
| 11 | { |
| 12 | getInstance().incErrorCountImpl(); |
| 13 | } |
| 14 | |
| 15 | bool SpdHelper::isPatchBad(UINT8* prm, UINT32 len) |
| 16 | { |
| 17 | return getInstance().isPatchBadImpl(prm, len); |
| 18 | } |
| 19 | |
| 20 | bool SpdHelper::isSpdDebug() |
| 21 | { |
| 22 | bool b = getInstance().isSpdDebugImpl(); |
| 23 | ALOGD("%s SpdDebug is %s", __func__, (b ? "TRUE" : "FALSE")); |
| 24 | return b; |
| 25 | } |
| 26 | |
| 27 | void SpdHelper::incErrorCountImpl() |
| 28 | { |
| 29 | if (++mErrorCount >= mMaxErrorCount) |
| 30 | { |
| 31 | setPatchAsBadImpl(); |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | void SpdHelper::setPatchAsBadImpl() |
| 36 | { |
| 37 | mIsPatchBad = true; |
| 38 | } |
| 39 | |
| 40 | inline const char * toHex(UINT8 b) |
| 41 | { |
| 42 | static char hex[] = "0123456789ABCDEF"; |
| 43 | static char c[3]; |
| 44 | c[0] = hex[((b >> 4) & 0x0F)]; |
| 45 | c[1] = hex[((b >> 0) & 0x0F)]; |
| 46 | c[2] = '\0'; |
| 47 | return &c[0]; |
| 48 | } |
| 49 | |
| 50 | bool SpdHelper::isPatchBadImpl(UINT8* prm, UINT32 len) |
| 51 | { |
| 52 | string strNew; |
| 53 | |
| 54 | // Get the patch ID from the prm data. |
| 55 | for (int i = 0; i < 8 && i < len; ++i) |
| 56 | strNew.append(toHex(*prm++)); |
| 57 | |
| 58 | // If it is not the same patch as before, then reset things. |
| 59 | if ( strNew != mPatchId ) |
| 60 | { |
| 61 | mPatchId = strNew; |
| 62 | mErrorCount = 0; |
| 63 | mIsPatchBad = false; |
| 64 | } |
| 65 | |
| 66 | // Otherwise the 'mIsPatchBad' will tell if its bad or not. |
| 67 | ALOGD("%s '%s' (%d) is %sa known bad patch file", __func__, mPatchId.c_str(), mErrorCount, (mIsPatchBad ? "" : "not ")); |
| 68 | |
| 69 | return mIsPatchBad; |
| 70 | } |
| 71 | |
| 72 | SpdHelper& SpdHelper::getInstance() |
| 73 | { |
| 74 | static SpdHelper* theInstance = NULL; |
| 75 | if (theInstance == NULL) |
| 76 | theInstance= new SpdHelper; |
| 77 | return *theInstance; |
| 78 | } |
| 79 | |
| 80 | SpdHelper::SpdHelper() |
| 81 | { |
| 82 | mErrorCount = 0; |
| 83 | mPatchId.erase(); |
| 84 | if(!GetNumValue((char*)NAME_SPD_MAXRETRYCOUNT, &mMaxErrorCount, sizeof(mMaxErrorCount))) |
| 85 | mMaxErrorCount = DEFAULT_SPD_MAXRETRYCOUNT; |
| 86 | if (!GetNumValue((char*)NAME_SPD_DEBUG, &mSpdDebug, sizeof(mSpdDebug))) |
| 87 | mSpdDebug = false; |
| 88 | } |