1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #include <memory> 19 20 #include <nativehelper/JniConstants.h> 21 22 #include "JniException.h" 23 #include "ZipUtilities.h" 24 25 void throwExceptionForZlibError(JNIEnv* env, const char* exceptionClassName, int error, 26 NativeZipStream* stream) { 27 if (error == Z_MEM_ERROR) { 28 jniThrowOutOfMemoryError(env, NULL); 29 } else if (stream != NULL && stream->stream.msg != NULL) { 30 jniThrowException(env, exceptionClassName, stream->stream.msg); 31 } else { 32 jniThrowException(env, exceptionClassName, zError(error)); 33 } 34 } 35 36 NativeZipStream::NativeZipStream() : inCap(0), totalIn(0), totalOut(0) { 37 // Let zlib use its default allocator. 38 stream.opaque = Z_NULL; 39 stream.zalloc = Z_NULL; 40 stream.zfree = Z_NULL; 41 } 42 43 NativeZipStream::~NativeZipStream() { 44 } 45 46 void NativeZipStream::setDictionary(JNIEnv* env, jbyteArray javaDictionary, int off, int len, 47 bool inflate) { 48 std::unique_ptr<jbyte[]> dictionaryBytes(new jbyte[len]); 49 if (dictionaryBytes.get() == NULL) { 50 jniThrowOutOfMemoryError(env, NULL); 51 return; 52 } 53 env->GetByteArrayRegion(javaDictionary, off, len, &dictionaryBytes[0]); 54 const Bytef* dictionary = reinterpret_cast<const Bytef*>(&dictionaryBytes[0]); 55 int err; 56 if (inflate) { 57 err = inflateSetDictionary(&stream, dictionary, len); 58 } else { 59 err = deflateSetDictionary(&stream, dictionary, len); 60 } 61 if (err != Z_OK) { 62 throwExceptionForZlibError(env, "java/lang/IllegalArgumentException", err, NULL); 63 return; 64 } 65 mDict.reset(dictionaryBytes.release()); 66 } 67 68 void NativeZipStream::setInput(JNIEnv* env, jbyteArray buf, jint off, jint len) { 69 input.reset(new jbyte[len]); 70 if (input.get() == NULL) { 71 inCap = 0; 72 jniThrowOutOfMemoryError(env, NULL); 73 return; 74 } 75 inCap = len; 76 if (buf != NULL) { 77 env->GetByteArrayRegion(buf, off, len, &input[0]); 78 } 79 stream.next_in = reinterpret_cast<Bytef*>(&input[0]); 80 stream.avail_in = len; 81 } 82 83 NativeZipStream* toNativeZipStream(jlong address) { 84 return reinterpret_cast<NativeZipStream*>(static_cast<uintptr_t>(address)); 85 } 86
