Examples with NotADexFile org.jf.dexlib2.dexbacked.DexBackedDexFile.NotADexFile used on opensource projects

Example 1 with NotADexFile

use of org.jf.dexlib2.dexbacked.DexBackedDexFile.NotADexFile in project smali by JesusFreke.

the class DexUtil method verifyDexHeader.

/**
     * Reads in the dex header from the given input stream and verifies that it is valid and a supported version
     *
     * The inputStream must support mark(), and will be reset to initial position upon exiting the method
     *
     * @param inputStream An input stream that is positioned at a dex header
     * @throws NotADexFile If the file is not a dex file
     * @throws InvalidFile If the header appears to be a dex file, but is not valid for some reason
     * @throws UnsupportedFile If the dex header is valid, but uses unsupported functionality
     */
public static void verifyDexHeader(@Nonnull InputStream inputStream) throws IOException {
    if (!inputStream.markSupported()) {
        throw new IllegalArgumentException("InputStream must support mark");
    }
    inputStream.mark(44);
    byte[] partialHeader = new byte[44];
    try {
        ByteStreams.readFully(inputStream, partialHeader);
    } catch (EOFException ex) {
        throw new NotADexFile("File is too short");
    } finally {
        inputStream.reset();
    }
    verifyDexHeader(partialHeader, 0);
}