コード例 #1
0
/*
 * Uncompress an entry, in its entirety, to an open file descriptor.
 *
 * TODO: this doesn't verify the data's CRC, but probably should (especially
 * for uncompressed data).
 */
bool dexZipExtractEntryToFile(const ZipArchive* pArchive,
    const ZipEntry entry, int fd)
{
    bool result = false;
    int ent = entryToIndex(pArchive, entry);
    if (ent < 0)
        return -1;

    const unsigned char* basePtr = (const unsigned char*)pArchive->mMap.addr;
    int method;
    long uncompLen, compLen;
    off_t offset;

    if (!dexZipGetEntryInfo(pArchive, entry, &method, &uncompLen, &compLen,
            &offset, NULL, NULL))
    {
        goto bail;
    }

    if (method == kCompressStored) {
        ssize_t actual;

        actual = write(fd, basePtr + offset, uncompLen);
        if (actual < 0) {
            LOGE("Write failed: %s\n", strerror(errno));
            goto bail;
        } else if (actual != uncompLen) {
            LOGE("Partial write during uncompress (%d of %ld)\n",
                (int) actual, uncompLen);
            goto bail;
        } else {
            LOGI("+++ successful write\n");
        }
    } else {
        if (!inflateToFile(fd, basePtr+offset, uncompLen, compLen))
            goto bail;
    }

    result = true;

bail:
    return result;
}
コード例 #2
0
ファイル: ZipArchive.c プロジェクト: sdklite/Dalvik_CAR
/*
 * Uncompress an entry, in its entirety, to an open file descriptor.
 *
 * TODO: this doesn't verify the data's CRC, but probably should (especially
 * for uncompressed data).
 */
int dexZipExtractEntryToFile(const ZipArchive* pArchive,
    const ZipEntry entry, int fd)
{
    int result = -1;
    int ent = entryToIndex(pArchive, entry);
    if (ent < 0) {
        LOGW("Zip: extract can't find entry %p\n", entry);
        goto bail;
    }

    int method;
    size_t uncompLen, compLen;
    off_t dataOffset;

    if (dexZipGetEntryInfo(pArchive, entry, &method, &uncompLen, &compLen,
            &dataOffset, NULL, NULL) != 0)
    {
        goto bail;
    }
    if (lseek(pArchive->mFd, dataOffset, SEEK_SET) != dataOffset) {
        LOGW("Zip: lseek to data at %ld failed\n", (long) dataOffset);
        goto bail;
    }

    if (method == kCompressStored) {
        if (copyFileToFile(pArchive->mFd, fd, uncompLen) != 0)
            goto bail;
    } else {
        if (inflateToFile(pArchive->mFd, fd, uncompLen, compLen) != 0)
            goto bail;
    }

    result = 0;

bail:
    return result;
}