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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "StrictJarFile"
#include <memory>
#include <string>
#include <log/log.h>
#include <nativehelper/jni_macros.h>
#include <nativehelper/JNIHelp.h>
#include <nativehelper/ScopedLocalRef.h>
#include <nativehelper/ScopedUtfChars.h>
#include "core_jni_helpers.h"
#include "ziparchive/zip_archive.h"
namespace {
jclass zipEntryClass;
// The method ID for ZipEntry.<init>(String,String,JJJIII[BJJ)
jmethodID zipEntryCtor;
void throwIoException(JNIEnv* env, const int32_t errorCode) {
jniThrowException(env, "java/io/IOException", ErrorCodeString(errorCode));
}
jobject newZipEntry(JNIEnv* env, const ZipEntry& entry, jstring entryName) {
return env->NewObject(zipEntryClass,
zipEntryCtor,
entryName,
NULL, // comment
static_cast<jlong>(entry.crc32),
static_cast<jlong>(entry.compressed_length),
static_cast<jlong>(entry.uncompressed_length),
static_cast<jint>(entry.method),
static_cast<jint>(0), // time
NULL, // byte[] extra
static_cast<jlong>(entry.offset));
}
jlong StrictJarFile_nativeOpenJarFile(JNIEnv* env, jobject, jstring name, jint fd) {
// Name argument is used for logging, and can be any string.
ScopedUtfChars nameChars(env, name);
if (nameChars.c_str() == NULL) {
return static_cast<jlong>(-1);
}
ZipArchiveHandle handle;
int32_t error = OpenArchiveFd(fd, nameChars.c_str(), &handle,
false /* owned by Java side */);
if (error) {
CloseArchive(handle);
throwIoException(env, error);
return static_cast<jlong>(-1);
}
return reinterpret_cast<jlong>(handle);
}
class IterationHandle {
public:
IterationHandle() :
cookie_(NULL) {
}
void** CookieAddress() {
return &cookie_;
}
~IterationHandle() {
EndIteration(cookie_);
}
private:
void* cookie_;
};
jlong StrictJarFile_nativeStartIteration(JNIEnv* env, jobject, jlong nativeHandle,
jstring prefix) {
ScopedUtfChars prefixChars(env, prefix);
if (prefixChars.c_str() == NULL) {
return static_cast<jlong>(-1);
}
IterationHandle* handle = new IterationHandle();
int32_t error = 0;
if (prefixChars.size() == 0) {
error = StartIteration(reinterpret_cast<ZipArchiveHandle>(nativeHandle),
handle->CookieAddress(), NULL, NULL);
} else {
ZipString entry_name(prefixChars.c_str());
error = StartIteration(reinterpret_cast<ZipArchiveHandle>(nativeHandle),
handle->CookieAddress(), &entry_name, NULL);
}
if (error) {
throwIoException(env, error);
return static_cast<jlong>(-1);
}
return reinterpret_cast<jlong>(handle);
}
jobject StrictJarFile_nativeNextEntry(JNIEnv* env, jobject, jlong iterationHandle) {
ZipEntry data;
ZipString entryName;
IterationHandle* handle = reinterpret_cast<IterationHandle*>(iterationHandle);
const int32_t error = Next(*handle->CookieAddress(), &data, &entryName);
if (error) {
delete handle;
return NULL;
}
std::unique_ptr<char[]> entryNameCString(new char[entryName.name_length + 1]);
memcpy(entryNameCString.get(), entryName.name, entryName.name_length);
entryNameCString[entryName.name_length] = '\0';
ScopedLocalRef<jstring> entryNameString(env, env->NewStringUTF(entryNameCString.get()));
return newZipEntry(env, data, entryNameString.get());
}
jobject StrictJarFile_nativeFindEntry(JNIEnv* env, jobject, jlong nativeHandle,
jstring entryName) {
ScopedUtfChars entryNameChars(env, entryName);
if (entryNameChars.c_str() == NULL) {
return NULL;
}
ZipEntry data;
const int32_t error = FindEntry(reinterpret_cast<ZipArchiveHandle>(nativeHandle),
ZipString(entryNameChars.c_str()), &data);
if (error) {
return NULL;
}
return newZipEntry(env, data, entryName);
}
void StrictJarFile_nativeClose(JNIEnv*, jobject, jlong nativeHandle) {
CloseArchive(reinterpret_cast<ZipArchiveHandle>(nativeHandle));
}
JNINativeMethod gMethods[] = {
NATIVE_METHOD(StrictJarFile, nativeOpenJarFile, "(Ljava/lang/String;I)J"),
NATIVE_METHOD(StrictJarFile, nativeStartIteration, "(JLjava/lang/String;)J"),
NATIVE_METHOD(StrictJarFile, nativeNextEntry, "(J)Ljava/util/zip/ZipEntry;"),
NATIVE_METHOD(StrictJarFile, nativeFindEntry, "(JLjava/lang/String;)Ljava/util/zip/ZipEntry;"),
NATIVE_METHOD(StrictJarFile, nativeClose, "(J)V"),
};
} // namespace
namespace android {
int register_android_util_jar_StrictJarFile(JNIEnv* env) {
zipEntryClass = MakeGlobalRefOrDie(env, FindClassOrDie(env, "java/util/zip/ZipEntry"));
zipEntryCtor = GetMethodIDOrDie(env, zipEntryClass, "<init>",
"(Ljava/lang/String;Ljava/lang/String;JJJII[BJ)V");
return jniRegisterNativeMethods(env, "android/util/jar/StrictJarFile", gMethods, NELEM(gMethods));
}
}; // namespace android
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