1 /*

     2  * Copyright 1998 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 /*

    27  * Native method support for java.util.zip.ZipEntry

    28  */

    29 

    30 #include <stdio.h>

    31 #include <stdlib.h>

    32 #include "jlong.h"

    33 #include "jvm.h"

    34 #include "jni.h"

    35 #include "jni_util.h"

    36 #include "zip_util.h"

    37 

    38 #include "java_util_zip_ZipEntry.h"

    39 

    40 #define DEFLATED 8

    41 #define STORED 0

    42 

    43 static jfieldID nameID;

    44 static jfieldID timeID;

    45 static jfieldID crcID;

    46 static jfieldID sizeID;

    47 static jfieldID csizeID;

    48 static jfieldID methodID;

    49 static jfieldID extraID;

    50 static jfieldID commentID;

    51 

    52 JNIEXPORT void JNICALL

    53 Java_java_util_zip_ZipEntry_initIDs(JNIEnv *env, jclass cls)

    54 {

    55     nameID = (*env)->GetFieldID(env, cls, "name", "Ljava/lang/String;");

    56     timeID = (*env)->GetFieldID(env, cls, "time", "J");

    57     crcID = (*env)->GetFieldID(env, cls, "crc", "J");

    58     sizeID = (*env)->GetFieldID(env, cls, "size", "J");

    59     csizeID = (*env)->GetFieldID(env, cls, "csize", "J");

    60     methodID = (*env)->GetFieldID(env, cls, "method", "I");

    61     extraID = (*env)->GetFieldID(env, cls, "extra", "[B");

    62     commentID = (*env)->GetFieldID(env, cls, "comment", "Ljava/lang/String;");

    63 }

    64 

    65 JNIEXPORT void JNICALL

    66 Java_java_util_zip_ZipEntry_initFields(JNIEnv *env, jobject obj, jlong zentry)

    67 {

    68     jzentry *ze = jlong_to_ptr(zentry);

    69     jstring name = (*env)->GetObjectField(env, obj, nameID);

    70 

    71     if (name == 0) {

    72         name = (*env)->NewStringUTF(env, ze->name);

    73         if (name == 0) {

    74             return;

    75         }

    76         (*env)->SetObjectField(env, obj, nameID, name);

    77     }

    78     (*env)->SetLongField(env, obj, timeID, (jlong)ze->time & 0xffffffffUL);

    79     (*env)->SetLongField(env, obj, crcID, (jlong)ze->crc & 0xffffffffUL);

    80     (*env)->SetLongField(env, obj, sizeID, (jlong)ze->size);

    81     if (ze->csize == 0) {

    82         (*env)->SetLongField(env, obj, csizeID, (jlong)ze->size);

    83         (*env)->SetIntField(env, obj, methodID, STORED);

    84     } else {

    85         (*env)->SetLongField(env, obj, csizeID, (jlong)ze->csize);

    86         (*env)->SetIntField(env, obj, methodID, DEFLATED);

    87     }

    88     if (ze->extra != 0) {

    89         unsigned char *bp = (unsigned char *)&ze->extra[0];

    90         jsize len = (bp[0] | (bp[1] << 8));

    91         jbyteArray extra = (*env)->NewByteArray(env, len);

    92         if (extra == 0) {

    93             return;

    94         }

    95         (*env)->SetByteArrayRegion(env, extra, 0, len, &ze->extra[2]);

    96         (*env)->SetObjectField(env, obj, extraID, extra);

    97     }

    98     if (ze->comment != 0) {

    99         jstring comment = (*env)->NewStringUTF(env, ze->comment);

   100         if (comment == 0) {

   101             return;

   102         }

   103         (*env)->SetObjectField(env, obj, commentID, comment);

   104     }

   105 }