| /* |
| * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| #include <sys/types.h> |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| |
| |
| #include <limits.h> |
| |
| #include <com_sun_java_util_jar_pack_NativeUnpack.h> |
| |
| #include "jni_util.h" |
| |
| #include "defines.h" |
| #include "bytes.h" |
| #include "utils.h" |
| #include "coding.h" |
| #include "bands.h" |
| #include "constants.h" |
| #include "zip.h" |
| #include "unpack.h" |
| |
| |
| static jfieldID unpackerPtrFID; |
| static jmethodID currentInstMID; |
| static jmethodID readInputMID; |
| static jclass NIclazz; |
| |
| static char* dbg = null; |
| |
| #define THROW_IOE(x) JNU_ThrowIOException(env,x) |
| |
| static jlong read_input_via_jni(unpacker* self, |
| void* buf, jlong minlen, jlong maxlen); |
| |
| static unpacker* get_unpacker(JNIEnv *env, jobject pObj, bool noCreate=false) { |
| unpacker* uPtr; |
| uPtr = (unpacker*)jlong2ptr(env->GetLongField(pObj, unpackerPtrFID)); |
| //fprintf(stderr, "get_unpacker(%p) uPtr=%p\n", pObj, uPtr); |
| if (uPtr == null) { |
| if (noCreate) return null; |
| uPtr = new unpacker(); |
| if (uPtr == null) { |
| THROW_IOE(ERROR_ENOMEM); |
| return null; |
| } |
| //fprintf(stderr, "get_unpacker(%p) uPtr=%p initializing\n", pObj, uPtr); |
| uPtr->init(read_input_via_jni); |
| uPtr->jniobj = (void*) env->NewGlobalRef(pObj); |
| env->SetLongField(pObj, unpackerPtrFID, ptr2jlong(uPtr)); |
| } |
| uPtr->jnienv = env; // keep refreshing this in case of MT access |
| return uPtr; |
| } |
| |
| // This is the harder trick: Pull the current state out of mid-air. |
| static unpacker* get_unpacker() { |
| //fprintf(stderr, "get_unpacker()\n"); |
| JavaVM* vm = null; |
| JNI_GetCreatedJavaVMs(&vm, 1, null); |
| void* envRaw = null; |
| vm->GetEnv(&envRaw, JNI_VERSION_1_1); |
| JNIEnv* env = (JNIEnv*) envRaw; |
| //fprintf(stderr, "get_unpacker() env=%p\n", env); |
| if (env == null) |
| return null; |
| jobject pObj = env->CallStaticObjectMethod(NIclazz, currentInstMID); |
| //fprintf(stderr, "get_unpacker() pObj=%p\n", pObj); |
| if (pObj == null) |
| return null; |
| // Got pObj and env; now do it the easy way. |
| return get_unpacker(env, pObj); |
| } |
| |
| static void free_unpacker(JNIEnv *env, jobject pObj, unpacker* uPtr) { |
| if (uPtr != null) { |
| //fprintf(stderr, "free_unpacker(%p) uPtr=%p\n", pObj, uPtr); |
| env->DeleteGlobalRef((jobject) uPtr->jniobj); |
| uPtr->jniobj = null; |
| uPtr->free(); |
| delete uPtr; |
| env->SetLongField(pObj, unpackerPtrFID, (jlong)null); |
| } |
| } |
| |
| unpacker* unpacker::current() { |
| return get_unpacker(); |
| } |
| |
| // Callback for fetching data, Java style. Calls NativeUnpack.readInputFn(). |
| static jlong read_input_via_jni(unpacker* self, |
| void* buf, jlong minlen, jlong maxlen) { |
| JNIEnv* env = (JNIEnv*) self->jnienv; |
| jobject pbuf = env->NewDirectByteBuffer(buf, maxlen); |
| return env->CallLongMethod((jobject) self->jniobj, readInputMID, |
| pbuf, minlen); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_com_sun_java_util_jar_pack_NativeUnpack_initIDs(JNIEnv *env, jclass clazz) { |
| dbg = getenv("DEBUG_ATTACH"); |
| while( dbg != null) { sleep(10); } |
| NIclazz = (jclass) env->NewGlobalRef(clazz); |
| unpackerPtrFID = env->GetFieldID(clazz, "unpackerPtr", "J"); |
| currentInstMID = env->GetStaticMethodID(clazz, "currentInstance", |
| "()Ljava/lang/Object;"); |
| readInputMID = env->GetMethodID(clazz, "readInputFn", |
| "(Ljava/nio/ByteBuffer;J)J"); |
| if (unpackerPtrFID == null || |
| currentInstMID == null || |
| readInputMID == null || |
| NIclazz == null) { |
| THROW_IOE("cannot init class members"); |
| } |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_com_sun_java_util_jar_pack_NativeUnpack_start(JNIEnv *env, jobject pObj, |
| jobject pBuf, jlong offset) { |
| unpacker* uPtr = get_unpacker(env, pObj); |
| |
| // redirect our io to the default log file or whatever. |
| uPtr->redirect_stdio(); |
| |
| void* buf = null; |
| size_t buflen = 0; |
| if (pBuf != null) { |
| buf = env->GetDirectBufferAddress(pBuf); |
| buflen = (size_t)env->GetDirectBufferCapacity(pBuf); |
| if (buflen == 0) buf = null; |
| if (buf == null) { THROW_IOE(ERROR_INTERNAL); return 0; } |
| if ((size_t)offset >= buflen) |
| { buf = null; buflen = 0; } |
| else |
| { buf = (char*)buf + (size_t)offset; buflen -= (size_t)offset; } |
| } |
| |
| uPtr->start(buf, buflen); |
| if (uPtr->aborting()) { |
| THROW_IOE(uPtr->get_abort_message()); |
| return 0; |
| } |
| |
| return ((jlong) |
| uPtr->get_segments_remaining() << 32) |
| + uPtr->get_files_remaining(); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_com_sun_java_util_jar_pack_NativeUnpack_getNextFile(JNIEnv *env, jobject pObj, |
| jobjectArray pParts) { |
| |
| unpacker* uPtr = get_unpacker(env, pObj); |
| unpacker::file* filep = uPtr->get_next_file(); |
| |
| if (uPtr->aborting()) { |
| THROW_IOE(uPtr->get_abort_message()); |
| return false; |
| } |
| |
| if (filep == null) { |
| return false; // end of the sequence |
| } |
| assert(filep == &uPtr->cur_file); |
| |
| int pidx = 0, iidx = 0; |
| jintArray pIntParts = (jintArray) env->GetObjectArrayElement(pParts, pidx++); |
| jint* intParts = env->GetIntArrayElements(pIntParts, null); |
| intParts[iidx++] = (jint)( (julong)filep->size >> 32 ); |
| intParts[iidx++] = (jint)( (julong)filep->size >> 0 ); |
| intParts[iidx++] = filep->modtime; |
| intParts[iidx++] = filep->deflate_hint() ? 1 : 0; |
| env->ReleaseIntArrayElements(pIntParts, intParts, JNI_COMMIT); |
| |
| env->SetObjectArrayElement(pParts, pidx++, env->NewStringUTF(filep->name)); |
| |
| jobject pDataBuf = null; |
| if (filep->data[0].len > 0) |
| pDataBuf = env->NewDirectByteBuffer(filep->data[0].ptr, |
| filep->data[0].len); |
| env->SetObjectArrayElement(pParts, pidx++, pDataBuf); |
| pDataBuf = null; |
| if (filep->data[1].len > 0) |
| pDataBuf = env->NewDirectByteBuffer(filep->data[1].ptr, |
| filep->data[1].len); |
| env->SetObjectArrayElement(pParts, pidx++, pDataBuf); |
| |
| return true; |
| } |
| |
| |
| JNIEXPORT jobject JNICALL |
| Java_com_sun_java_util_jar_pack_NativeUnpack_getUnusedInput(JNIEnv *env, jobject pObj) { |
| unpacker* uPtr = get_unpacker(env, pObj); |
| unpacker::file* filep = &uPtr->cur_file; |
| |
| if (uPtr->aborting()) { |
| THROW_IOE(uPtr->get_abort_message()); |
| return false; |
| } |
| |
| // We have fetched all the files. |
| // Now swallow up any remaining input. |
| if (uPtr->input_remaining() == 0) |
| return null; |
| else |
| return env->NewDirectByteBuffer(uPtr->input_scan(), |
| uPtr->input_remaining()); |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_com_sun_java_util_jar_pack_NativeUnpack_finish(JNIEnv *env, jobject pObj) { |
| unpacker* uPtr = get_unpacker(env, pObj, false); |
| if (uPtr == null) return 0; |
| size_t consumed = uPtr->input_consumed(); |
| free_unpacker(env, pObj, uPtr); |
| return consumed; |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_com_sun_java_util_jar_pack_NativeUnpack_setOption(JNIEnv *env, jobject pObj, |
| jstring pProp, jstring pValue) { |
| unpacker* uPtr = get_unpacker(env, pObj); |
| const char* prop = env->GetStringUTFChars(pProp, JNI_FALSE); |
| const char* value = env->GetStringUTFChars(pValue, JNI_FALSE); |
| jboolean retval = uPtr->set_option(prop, value); |
| env->ReleaseStringUTFChars(pProp, prop); |
| env->ReleaseStringUTFChars(pValue, value); |
| return retval; |
| } |
| |
| JNIEXPORT jstring JNICALL |
| Java_com_sun_java_util_jar_pack_NativeUnpack_getOption(JNIEnv *env, jobject pObj, |
| jstring pProp) { |
| |
| unpacker* uPtr = get_unpacker(env, pObj); |
| const char* prop = env->GetStringUTFChars(pProp, JNI_FALSE); |
| const char* value = uPtr->get_option(prop); |
| env->ReleaseStringUTFChars(pProp, prop); |
| if (value == null) return null; |
| return env->NewStringUTF(value); |
| } |