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Commit 8264321e authored by Kenny Root's avatar Kenny Root Committed by Android Git Automerger
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am 80328ba0: am 8ea71511: Merge "Initial tool for OBB manipulation" into gingerbread 

Merge commit '80328ba09606bd0825d7d4c9a4f213d1de09e53a'

* commit '80328ba09606bd0825d7d4c9a4f213d1de09e53a':
  Initial tool for OBB manipulation
parents cd8fce00 e827d9f4

include/utils/ObbFile.h

+4 −0
Original line number Diff line number Diff line
@@ -35,6 +35,8 @@ public: 
    bool readFrom(int fd);

    bool writeTo(const char* filename);

    bool writeTo(int fd);

    bool removeFrom(const char* filename);

    bool removeFrom(int fd);



    const char* getFileName() const {

        return mFileName;
@@ -78,6 +80,8 @@ private: 


    size_t mFileSize;



    size_t mFooterStart;



    unsigned char* mReadBuf;



    bool parseObbFile(int fd);

libs/utils/ObbFile.cpp

+39 −3
Original line number Diff line number Diff line
@@ -156,9 +156,9 @@ bool ObbFile::parseObbFile(int fd) 
            return false;

        }



        if (footerSize < kFooterMinSize) {

            LOGW("claimed footer size is too small (%08zx; minimum size is 0x%x)\n",

                    footerSize, kFooterMinSize);

        if (footerSize < (kFooterMinSize - kFooterTagSize)) {

            LOGW("claimed footer size is too small (0x%zx; minimum size is 0x%x)\n",

                    footerSize, kFooterMinSize - kFooterTagSize);

            return false;

        }

    }
@@ -169,6 +169,8 @@ bool ObbFile::parseObbFile(int fd) 
        return false;

    }



    mFooterStart = fileOffset;



    char* scanBuf = (char*)malloc(footerSize);

    if (scanBuf == NULL) {

        LOGW("couldn't allocate scanBuf: %s\n", strerror(errno));
@@ -293,4 +295,38 @@ bool ObbFile::writeTo(int fd) 
    return true;

}



bool ObbFile::removeFrom(const char* filename)

{

    int fd;

    bool success = false;



    fd = ::open(filename, O_RDWR);

    if (fd < 0) {

        goto out;

    }

    success = removeFrom(fd);

    close(fd);



out:

    if (!success) {

        LOGW("failed to remove signature from %s: %s\n", filename, strerror(errno));

    }

    return success;

}



bool ObbFile::removeFrom(int fd)

{

    if (fd < 0) {

        return false;

    }



    if (!readFrom(fd)) {

        return false;

    }



    ftruncate(fd, mFooterStart);



    return true;

}



}