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 "ZipUtilities.h"
19
20 #include <nativehelper/JNIHelp.h>
21
22 #include "JniException.h"
23
throwExceptionForZlibError(JNIEnv * env,const char * exceptionClassName,int error,NativeZipStream * stream)24 void throwExceptionForZlibError(JNIEnv* env, const char* exceptionClassName, int error,
25 NativeZipStream* stream) {
26 if (error == Z_MEM_ERROR) {
27 jniThrowOutOfMemoryError(env, NULL);
28 } else if (stream != NULL && stream->stream.msg != NULL) {
29 jniThrowException(env, exceptionClassName, stream->stream.msg);
30 } else {
31 jniThrowException(env, exceptionClassName, zError(error));
32 }
33 }
34
NativeZipStream()35 NativeZipStream::NativeZipStream() : inCap(0), totalIn(0), totalOut(0) {
36 // Let zlib use its default allocator.
37 stream.opaque = Z_NULL;
38 stream.zalloc = Z_NULL;
39 stream.zfree = Z_NULL;
40 }
41
~NativeZipStream()42 NativeZipStream::~NativeZipStream() {
43 }
44
setDictionary(JNIEnv * env,jbyteArray javaDictionary,int off,int len,bool inflate)45 void NativeZipStream::setDictionary(JNIEnv* env, jbyteArray javaDictionary, int off, int len,
46 bool inflate) {
47 std::unique_ptr<jbyte[]> dictionaryBytes(new jbyte[len]);
48 if (dictionaryBytes.get() == NULL) {
49 jniThrowOutOfMemoryError(env, NULL);
50 return;
51 }
52 env->GetByteArrayRegion(javaDictionary, off, len, &dictionaryBytes[0]);
53 const Bytef* dictionary = reinterpret_cast<const Bytef*>(&dictionaryBytes[0]);
54 int err;
55 if (inflate) {
56 err = inflateSetDictionary(&stream, dictionary, len);
57 } else {
58 err = deflateSetDictionary(&stream, dictionary, len);
59 }
60 if (err != Z_OK) {
61 throwExceptionForZlibError(env, "java/lang/IllegalArgumentException", err, NULL);
62 return;
63 }
64 mDict.reset(dictionaryBytes.release());
65 }
66
setInput(JNIEnv * env,jbyteArray buf,jint off,jint len)67 void NativeZipStream::setInput(JNIEnv* env, jbyteArray buf, jint off, jint len) {
68 input.reset(new jbyte[len]);
69 if (input.get() == NULL) {
70 inCap = 0;
71 jniThrowOutOfMemoryError(env, NULL);
72 return;
73 }
74 inCap = len;
75 if (buf != NULL) {
76 env->GetByteArrayRegion(buf, off, len, &input[0]);
77 }
78 stream.next_in = reinterpret_cast<Bytef*>(&input[0]);
79 stream.avail_in = len;
80 }
81
toNativeZipStream(jlong address)82 NativeZipStream* toNativeZipStream(jlong address) {
83 return reinterpret_cast<NativeZipStream*>(static_cast<uintptr_t>(address));
84 }
85