1/* 2 * Copyright (c) 1998, 2010, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26/* 27 * Native method support for java.util.zip.ZipFile 28 */ 29 30#include <stdio.h> 31#include <stdlib.h> 32#include <string.h> 33#include <errno.h> 34#include <ctype.h> 35#include <assert.h> 36#include "JNIHelp.h" 37#include "jlong.h" 38#include "jvm.h" 39#include "jni.h" 40#include "jni_util.h" 41#include "zip_util.h" 42#ifdef WIN32 43#include "io_util_md.h" 44#else 45#include "io_util.h" 46#endif 47 48#include "java_util_zip_ZipFile.h" 49 50#define NATIVE_METHOD(className, functionName, signature) \ 51{ #functionName, signature, (void*)(className ## _ ## functionName) } 52 53#define DEFLATED 8 54#define STORED 0 55 56static jfieldID jzfileID; 57 58static void ZipFile_initIDs(JNIEnv *env) 59{ 60 jclass cls = (*env)->FindClass(env, "java/util/zip/ZipFile"); 61 jzfileID = (*env)->GetFieldID(env, cls, "jzfile", "J"); 62 assert(jzfileID != 0); 63} 64 65 66static int OPEN_READ = java_util_zip_ZipFile_OPEN_READ; 67static int OPEN_DELETE = java_util_zip_ZipFile_OPEN_DELETE; 68 69static void 70ThrowZipException(JNIEnv *env, const char *msg) 71{ 72 jstring s = NULL; 73 jobject x; 74 75 if (msg != NULL) { 76 s = JNU_NewStringPlatform(env, msg); 77 } 78 x = JNU_NewObjectByName(env, 79 "java/util/zip/ZipException", 80 "(Ljava/lang/String;)V", s); 81 if (x != NULL) { 82 (*env)->Throw(env, x); 83 } 84} 85 86JNIEXPORT jlong JNICALL 87ZipFile_open(JNIEnv *env, jclass cls, jstring name, 88 jint mode, jlong lastModified, 89 jboolean usemmap) 90{ 91 const char *path = JNU_GetStringPlatformChars(env, name, 0); 92 char *msg = 0; 93 jlong result = 0; 94 int flag = 0; 95 jzfile *zip = 0; 96 97 if (mode & OPEN_READ) flag |= O_RDONLY; 98 // Android changed, JVM_O_DELETE/unlink is problematic, see b/28901232. 99 //if (mode & OPEN_DELETE) flag |= JVM_O_DELETE; 100 101 if (path != 0) { 102 zip = ZIP_Get_From_Cache(path, &msg, lastModified); 103 if (zip == 0 && msg == 0) { 104 ZFILE zfd = 0; 105#ifdef WIN32 106 zfd = winFileHandleOpen(env, name, flag); 107 if (zfd == -1) { 108 /* Exception already pending. */ 109 goto finally; 110 } 111#else 112 zfd = JVM_Open(path, flag, 0); 113 if (zfd < 0) { 114 throwFileNotFoundException(env, name); 115 goto finally; 116 } 117#endif 118 zip = ZIP_Put_In_Cache0(path, zfd, &msg, lastModified, usemmap); 119 } 120 121 if (zip != 0) { 122 result = ptr_to_jlong(zip); 123 } else if (msg != 0) { 124 ThrowZipException(env, msg); 125 free(msg); 126 } else if (errno == ENOMEM) { 127 JNU_ThrowOutOfMemoryError(env, 0); 128 } else { 129 ThrowZipException(env, "error in opening zip file"); 130 } 131finally: 132 JNU_ReleaseStringPlatformChars(env, name, path); 133 } 134 return result; 135} 136 137JNIEXPORT jint JNICALL 138ZipFile_getTotal(JNIEnv *env, jclass cls, jlong zfile) 139{ 140 jzfile *zip = jlong_to_ptr(zfile); 141 142 return zip->total; 143} 144 145JNIEXPORT jboolean JNICALL 146ZipFile_startsWithLOC(JNIEnv *env, jclass cls, jlong zfile) 147{ 148 jzfile *zip = jlong_to_ptr(zfile); 149 150 return zip->locsig; 151} 152 153JNIEXPORT void JNICALL 154ZipFile_close(JNIEnv *env, jclass cls, jlong zfile) 155{ 156 ZIP_Close(jlong_to_ptr(zfile)); 157} 158 159JNIEXPORT jint JNICALL 160ZipFile_getFileDescriptor(JNIEnv *env, jclass cls, jlong zfile) { 161 jzfile *zip = jlong_to_ptr(zfile); 162 return zip->zfd; 163} 164 165JNIEXPORT jlong JNICALL 166ZipFile_getEntry(JNIEnv *env, jclass cls, jlong zfile, 167 jbyteArray name, jboolean addSlash) 168{ 169#define MAXNAME 1024 170 jzfile *zip = jlong_to_ptr(zfile); 171 jsize ulen = (*env)->GetArrayLength(env, name); 172 char buf[MAXNAME+2], *path; 173 jzentry *ze; 174 175 if (ulen > MAXNAME) { 176 path = malloc(ulen + 2); 177 if (path == 0) { 178 JNU_ThrowOutOfMemoryError(env, 0); 179 return 0; 180 } 181 } else { 182 path = buf; 183 } 184 (*env)->GetByteArrayRegion(env, name, 0, ulen, (jbyte *)path); 185 path[ulen] = '\0'; 186 if (addSlash == JNI_FALSE) { 187 ze = ZIP_GetEntry(zip, path, 0); 188 } else { 189 ze = ZIP_GetEntry(zip, path, (jint)ulen); 190 } 191 if (path != buf) { 192 free(path); 193 } 194 return ptr_to_jlong(ze); 195} 196 197JNIEXPORT void JNICALL 198ZipFile_freeEntry(JNIEnv *env, jclass cls, jlong zfile, 199 jlong zentry) 200{ 201 jzfile *zip = jlong_to_ptr(zfile); 202 jzentry *ze = jlong_to_ptr(zentry); 203 ZIP_FreeEntry(zip, ze); 204} 205 206JNIEXPORT jlong JNICALL 207ZipFile_getNextEntry(JNIEnv *env, jclass cls, jlong zfile, 208 jint n) 209{ 210 jzentry *ze = ZIP_GetNextEntry(jlong_to_ptr(zfile), n); 211 return ptr_to_jlong(ze); 212} 213 214JNIEXPORT jint JNICALL 215ZipFile_getEntryMethod(JNIEnv *env, jclass cls, jlong zentry) 216{ 217 jzentry *ze = jlong_to_ptr(zentry); 218 return ze->csize != 0 ? DEFLATED : STORED; 219} 220 221JNIEXPORT jint JNICALL 222ZipFile_getEntryFlag(JNIEnv *env, jclass cls, jlong zentry) 223{ 224 jzentry *ze = jlong_to_ptr(zentry); 225 return ze->flag; 226} 227 228JNIEXPORT jlong JNICALL 229ZipFile_getEntryCSize(JNIEnv *env, jclass cls, jlong zentry) 230{ 231 jzentry *ze = jlong_to_ptr(zentry); 232 return ze->csize != 0 ? ze->csize : ze->size; 233} 234 235JNIEXPORT jlong JNICALL 236ZipFile_getEntrySize(JNIEnv *env, jclass cls, jlong zentry) 237{ 238 jzentry *ze = jlong_to_ptr(zentry); 239 return ze->size; 240} 241 242JNIEXPORT jlong JNICALL 243ZipFile_getEntryTime(JNIEnv *env, jclass cls, jlong zentry) 244{ 245 jzentry *ze = jlong_to_ptr(zentry); 246 return (jlong)ze->time & 0xffffffffUL; 247} 248 249JNIEXPORT jlong JNICALL 250ZipFile_getEntryCrc(JNIEnv *env, jclass cls, jlong zentry) 251{ 252 jzentry *ze = jlong_to_ptr(zentry); 253 return (jlong)ze->crc & 0xffffffffUL; 254} 255 256JNIEXPORT jbyteArray JNICALL 257ZipFile_getCommentBytes(JNIEnv *env, jclass cls, jlong zfile) 258{ 259 jzfile *zip = jlong_to_ptr(zfile); 260 jbyteArray jba = NULL; 261 262 if (zip->comment != NULL) { 263 if ((jba = (*env)->NewByteArray(env, zip->clen)) == NULL) 264 return NULL; 265 (*env)->SetByteArrayRegion(env, jba, 0, zip->clen, (jbyte*)zip->comment); 266 } 267 return jba; 268} 269 270JNIEXPORT jbyteArray JNICALL 271ZipFile_getEntryBytes(JNIEnv *env, jclass cls, jlong zentry, jint type) 272{ 273 jzentry *ze = jlong_to_ptr(zentry); 274 int len = 0; 275 jbyteArray jba = NULL; 276 switch (type) { 277 case java_util_zip_ZipFile_JZENTRY_NAME: 278 if (ze->name != 0) { 279 len = (int)strlen(ze->name); 280 if (len == 0 || (jba = (*env)->NewByteArray(env, len)) == NULL) 281 break; 282 (*env)->SetByteArrayRegion(env, jba, 0, len, (jbyte *)ze->name); 283 } 284 break; 285 case java_util_zip_ZipFile_JZENTRY_EXTRA: 286 if (ze->extra != 0) { 287 unsigned char *bp = (unsigned char *)&ze->extra[0]; 288 len = (bp[0] | (bp[1] << 8)); 289 if (len <= 0 || (jba = (*env)->NewByteArray(env, len)) == NULL) 290 break; 291 (*env)->SetByteArrayRegion(env, jba, 0, len, &ze->extra[2]); 292 } 293 break; 294 case java_util_zip_ZipFile_JZENTRY_COMMENT: 295 if (ze->comment != 0) { 296 len = (int)strlen(ze->comment); 297 if (len == 0 || (jba = (*env)->NewByteArray(env, len)) == NULL) 298 break; 299 (*env)->SetByteArrayRegion(env, jba, 0, len, (jbyte*)ze->comment); 300 } 301 break; 302 } 303 return jba; 304} 305 306JNIEXPORT jint JNICALL 307ZipFile_read(JNIEnv *env, jclass cls, jlong zfile, 308 jlong zentry, jlong pos, jbyteArray bytes, 309 jint off, jint len) 310{ 311 jzfile *zip = jlong_to_ptr(zfile); 312 char *msg; 313 314#define BUFSIZE 8192 315 /* copy via tmp stack buffer: */ 316 jbyte buf[BUFSIZE]; 317 318 if (len > BUFSIZE) { 319 len = BUFSIZE; 320 } 321 322 ZIP_Lock(zip); 323 len = ZIP_Read(zip, jlong_to_ptr(zentry), pos, buf, len); 324 msg = zip->msg; 325 ZIP_Unlock(zip); 326 if (len != -1) { 327 (*env)->SetByteArrayRegion(env, bytes, off, len, buf); 328 } 329 330 if (len == -1) { 331 if (msg != 0) { 332 ThrowZipException(env, msg); 333 } else { 334 char errmsg[128]; 335 snprintf(errmsg, sizeof(errmsg), "errno: %d, error: %s\n", errno, 336 "Error reading ZIP file"); 337 JNU_ThrowIOExceptionWithLastError(env, errmsg); 338 } 339 } 340 341 return len; 342} 343 344JNIEXPORT jstring JNICALL 345ZipFile_getZipMessage(JNIEnv *env, jclass cls, jlong zfile) 346{ 347 jzfile *zip = jlong_to_ptr(zfile); 348 char *msg = zip->msg; 349 if (msg == NULL) { 350 return NULL; 351 } 352 return JNU_NewStringPlatform(env, msg); 353} 354 355JNIEXPORT jobjectArray JNICALL 356JarFile_getMetaInfEntryNames(JNIEnv *env, jobject obj) 357{ 358 jlong zfile = (*env)->GetLongField(env, obj, jzfileID); 359 jzfile *zip; 360 int i, count; 361 jobjectArray result = 0; 362 363 if (zfile == 0) { 364 JNU_ThrowByName(env, 365 "java/lang/IllegalStateException", "zip file closed"); 366 return NULL; 367 } 368 zip = jlong_to_ptr(zfile); 369 370 /* count the number of valid ZIP metanames */ 371 count = 0; 372 if (zip->metanames != 0) { 373 for (i = 0; i < zip->metacount; i++) { 374 if (zip->metanames[i] != 0) { 375 count++; 376 } 377 } 378 } 379 380 /* If some names were found then build array of java strings */ 381 if (count > 0) { 382 jclass cls = (*env)->FindClass(env, "java/lang/String"); 383 result = (*env)->NewObjectArray(env, count, cls, 0); 384 if (result != 0) { 385 for (i = 0; i < count; i++) { 386 jstring str = (*env)->NewStringUTF(env, zip->metanames[i]); 387 if (str == 0) { 388 break; 389 } 390 (*env)->SetObjectArrayElement(env, result, i, str); 391 (*env)->DeleteLocalRef(env, str); 392 } 393 } 394 } 395 return result; 396} 397 398static JNINativeMethod gMethods[] = { 399 NATIVE_METHOD(ZipFile, getFileDescriptor, "(J)I"), 400 NATIVE_METHOD(ZipFile, getEntry, "(J[BZ)J"), 401 NATIVE_METHOD(ZipFile, freeEntry, "(JJ)V"), 402 NATIVE_METHOD(ZipFile, getNextEntry, "(JI)J"), 403 NATIVE_METHOD(ZipFile, close, "(J)V"), 404 NATIVE_METHOD(ZipFile, open, "(Ljava/lang/String;IJZ)J"), 405 NATIVE_METHOD(ZipFile, getTotal, "(J)I"), 406 NATIVE_METHOD(ZipFile, startsWithLOC, "(J)Z"), 407 NATIVE_METHOD(ZipFile, read, "(JJJ[BII)I"), 408 NATIVE_METHOD(ZipFile, getEntryTime, "(J)J"), 409 NATIVE_METHOD(ZipFile, getEntryCrc, "(J)J"), 410 NATIVE_METHOD(ZipFile, getEntryCSize, "(J)J"), 411 NATIVE_METHOD(ZipFile, getEntrySize, "(J)J"), 412 NATIVE_METHOD(ZipFile, getEntryMethod, "(J)I"), 413 NATIVE_METHOD(ZipFile, getEntryFlag, "(J)I"), 414 NATIVE_METHOD(ZipFile, getCommentBytes, "(J)[B"), 415 NATIVE_METHOD(ZipFile, getEntryBytes, "(JI)[B"), 416 NATIVE_METHOD(ZipFile, getZipMessage, "(J)Ljava/lang/String;"), 417}; 418 419static JNINativeMethod gJarFileMethods[] = { 420 NATIVE_METHOD(JarFile, getMetaInfEntryNames, "()[Ljava/lang/String;"), 421}; 422 423void register_java_util_zip_ZipFile(JNIEnv* env) { 424 jniRegisterNativeMethods(env, "java/util/zip/ZipFile", gMethods, NELEM(gMethods)); 425 ZipFile_initIDs(env); 426 427 jniRegisterNativeMethods(env, "java/util/jar/JarFile", gJarFileMethods, NELEM(gJarFileMethods)); 428} 429