Piotr Jastrzebski | 51b1b69 | 2015-02-16 15:01:09 +0000 | [diff] [blame^] | 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 "jlong.h" |
| 37 | #include "jvm.h" |
| 38 | #include "jni.h" |
| 39 | #include "jni_util.h" |
| 40 | #include "zip_util.h" |
| 41 | #ifdef WIN32 |
| 42 | #include "io_util_md.h" |
| 43 | #else |
| 44 | #include "io_util.h" |
| 45 | #endif |
| 46 | |
| 47 | #include "java_util_zip_ZipFile.h" |
| 48 | #include "java_util_jar_JarFile.h" |
| 49 | |
| 50 | #define DEFLATED 8 |
| 51 | #define STORED 0 |
| 52 | |
| 53 | static jfieldID jzfileID; |
| 54 | |
| 55 | static int OPEN_READ = java_util_zip_ZipFile_OPEN_READ; |
| 56 | static int OPEN_DELETE = java_util_zip_ZipFile_OPEN_DELETE; |
| 57 | |
| 58 | JNIEXPORT void JNICALL |
| 59 | Java_java_util_zip_ZipFile_initIDs(JNIEnv *env, jclass cls) |
| 60 | { |
| 61 | jzfileID = (*env)->GetFieldID(env, cls, "jzfile", "J"); |
| 62 | assert(jzfileID != 0); |
| 63 | } |
| 64 | |
| 65 | static void |
| 66 | ThrowZipException(JNIEnv *env, const char *msg) |
| 67 | { |
| 68 | jstring s = NULL; |
| 69 | jobject x; |
| 70 | |
| 71 | if (msg != NULL) { |
| 72 | s = JNU_NewStringPlatform(env, msg); |
| 73 | } |
| 74 | x = JNU_NewObjectByName(env, |
| 75 | "java/util/zip/ZipException", |
| 76 | "(Ljava/lang/String;)V", s); |
| 77 | if (x != NULL) { |
| 78 | (*env)->Throw(env, x); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | JNIEXPORT jlong JNICALL |
| 83 | Java_java_util_zip_ZipFile_open(JNIEnv *env, jclass cls, jstring name, |
| 84 | jint mode, jlong lastModified, |
| 85 | jboolean usemmap) |
| 86 | { |
| 87 | const char *path = JNU_GetStringPlatformChars(env, name, 0); |
| 88 | char *msg = 0; |
| 89 | jlong result = 0; |
| 90 | int flag = 0; |
| 91 | jzfile *zip = 0; |
| 92 | |
| 93 | if (mode & OPEN_READ) flag |= O_RDONLY; |
| 94 | if (mode & OPEN_DELETE) flag |= JVM_O_DELETE; |
| 95 | |
| 96 | if (path != 0) { |
| 97 | zip = ZIP_Get_From_Cache(path, &msg, lastModified); |
| 98 | if (zip == 0 && msg == 0) { |
| 99 | ZFILE zfd = 0; |
| 100 | #ifdef WIN32 |
| 101 | zfd = winFileHandleOpen(env, name, flag); |
| 102 | if (zfd == -1) { |
| 103 | /* Exception already pending. */ |
| 104 | goto finally; |
| 105 | } |
| 106 | #else |
| 107 | zfd = JVM_Open(path, flag, 0); |
| 108 | if (zfd < 0) { |
| 109 | throwFileNotFoundException(env, name); |
| 110 | goto finally; |
| 111 | } |
| 112 | #endif |
| 113 | zip = ZIP_Put_In_Cache0(path, zfd, &msg, lastModified, usemmap); |
| 114 | } |
| 115 | |
| 116 | if (zip != 0) { |
| 117 | result = ptr_to_jlong(zip); |
| 118 | } else if (msg != 0) { |
| 119 | ThrowZipException(env, msg); |
| 120 | free(msg); |
| 121 | } else if (errno == ENOMEM) { |
| 122 | JNU_ThrowOutOfMemoryError(env, 0); |
| 123 | } else { |
| 124 | ThrowZipException(env, "error in opening zip file"); |
| 125 | } |
| 126 | finally: |
| 127 | JNU_ReleaseStringPlatformChars(env, name, path); |
| 128 | } |
| 129 | return result; |
| 130 | } |
| 131 | |
| 132 | JNIEXPORT jint JNICALL |
| 133 | Java_java_util_zip_ZipFile_getTotal(JNIEnv *env, jclass cls, jlong zfile) |
| 134 | { |
| 135 | jzfile *zip = jlong_to_ptr(zfile); |
| 136 | |
| 137 | return zip->total; |
| 138 | } |
| 139 | |
| 140 | JNIEXPORT jboolean JNICALL |
| 141 | Java_java_util_zip_ZipFile_startsWithLOC(JNIEnv *env, jclass cls, jlong zfile) |
| 142 | { |
| 143 | jzfile *zip = jlong_to_ptr(zfile); |
| 144 | |
| 145 | return zip->locsig; |
| 146 | } |
| 147 | |
| 148 | JNIEXPORT void JNICALL |
| 149 | Java_java_util_zip_ZipFile_close(JNIEnv *env, jclass cls, jlong zfile) |
| 150 | { |
| 151 | ZIP_Close(jlong_to_ptr(zfile)); |
| 152 | } |
| 153 | |
| 154 | JNIEXPORT jlong JNICALL |
| 155 | Java_java_util_zip_ZipFile_getEntry(JNIEnv *env, jclass cls, jlong zfile, |
| 156 | jbyteArray name, jboolean addSlash) |
| 157 | { |
| 158 | #define MAXNAME 1024 |
| 159 | jzfile *zip = jlong_to_ptr(zfile); |
| 160 | jsize ulen = (*env)->GetArrayLength(env, name); |
| 161 | char buf[MAXNAME+2], *path; |
| 162 | jzentry *ze; |
| 163 | |
| 164 | if (ulen > MAXNAME) { |
| 165 | path = malloc(ulen + 2); |
| 166 | if (path == 0) { |
| 167 | JNU_ThrowOutOfMemoryError(env, 0); |
| 168 | return 0; |
| 169 | } |
| 170 | } else { |
| 171 | path = buf; |
| 172 | } |
| 173 | (*env)->GetByteArrayRegion(env, name, 0, ulen, (jbyte *)path); |
| 174 | path[ulen] = '\0'; |
| 175 | if (addSlash == JNI_FALSE) { |
| 176 | ze = ZIP_GetEntry(zip, path, 0); |
| 177 | } else { |
| 178 | ze = ZIP_GetEntry(zip, path, (jint)ulen); |
| 179 | } |
| 180 | if (path != buf) { |
| 181 | free(path); |
| 182 | } |
| 183 | return ptr_to_jlong(ze); |
| 184 | } |
| 185 | |
| 186 | JNIEXPORT void JNICALL |
| 187 | Java_java_util_zip_ZipFile_freeEntry(JNIEnv *env, jclass cls, jlong zfile, |
| 188 | jlong zentry) |
| 189 | { |
| 190 | jzfile *zip = jlong_to_ptr(zfile); |
| 191 | jzentry *ze = jlong_to_ptr(zentry); |
| 192 | ZIP_FreeEntry(zip, ze); |
| 193 | } |
| 194 | |
| 195 | JNIEXPORT jlong JNICALL |
| 196 | Java_java_util_zip_ZipFile_getNextEntry(JNIEnv *env, jclass cls, jlong zfile, |
| 197 | jint n) |
| 198 | { |
| 199 | jzentry *ze = ZIP_GetNextEntry(jlong_to_ptr(zfile), n); |
| 200 | return ptr_to_jlong(ze); |
| 201 | } |
| 202 | |
| 203 | JNIEXPORT jint JNICALL |
| 204 | Java_java_util_zip_ZipFile_getEntryMethod(JNIEnv *env, jclass cls, jlong zentry) |
| 205 | { |
| 206 | jzentry *ze = jlong_to_ptr(zentry); |
| 207 | return ze->csize != 0 ? DEFLATED : STORED; |
| 208 | } |
| 209 | |
| 210 | JNIEXPORT jint JNICALL |
| 211 | Java_java_util_zip_ZipFile_getEntryFlag(JNIEnv *env, jclass cls, jlong zentry) |
| 212 | { |
| 213 | jzentry *ze = jlong_to_ptr(zentry); |
| 214 | return ze->flag; |
| 215 | } |
| 216 | |
| 217 | JNIEXPORT jlong JNICALL |
| 218 | Java_java_util_zip_ZipFile_getEntryCSize(JNIEnv *env, jclass cls, jlong zentry) |
| 219 | { |
| 220 | jzentry *ze = jlong_to_ptr(zentry); |
| 221 | return ze->csize != 0 ? ze->csize : ze->size; |
| 222 | } |
| 223 | |
| 224 | JNIEXPORT jlong JNICALL |
| 225 | Java_java_util_zip_ZipFile_getEntrySize(JNIEnv *env, jclass cls, jlong zentry) |
| 226 | { |
| 227 | jzentry *ze = jlong_to_ptr(zentry); |
| 228 | return ze->size; |
| 229 | } |
| 230 | |
| 231 | JNIEXPORT jlong JNICALL |
| 232 | Java_java_util_zip_ZipFile_getEntryTime(JNIEnv *env, jclass cls, jlong zentry) |
| 233 | { |
| 234 | jzentry *ze = jlong_to_ptr(zentry); |
| 235 | return (jlong)ze->time & 0xffffffffUL; |
| 236 | } |
| 237 | |
| 238 | JNIEXPORT jlong JNICALL |
| 239 | Java_java_util_zip_ZipFile_getEntryCrc(JNIEnv *env, jclass cls, jlong zentry) |
| 240 | { |
| 241 | jzentry *ze = jlong_to_ptr(zentry); |
| 242 | return (jlong)ze->crc & 0xffffffffUL; |
| 243 | } |
| 244 | |
| 245 | JNIEXPORT jbyteArray JNICALL |
| 246 | Java_java_util_zip_ZipFile_getCommentBytes(JNIEnv *env, |
| 247 | jclass cls, |
| 248 | jlong zfile) |
| 249 | { |
| 250 | jzfile *zip = jlong_to_ptr(zfile); |
| 251 | jbyteArray jba = NULL; |
| 252 | |
| 253 | if (zip->comment != NULL) { |
| 254 | if ((jba = (*env)->NewByteArray(env, zip->clen)) == NULL) |
| 255 | return NULL; |
| 256 | (*env)->SetByteArrayRegion(env, jba, 0, zip->clen, (jbyte*)zip->comment); |
| 257 | } |
| 258 | return jba; |
| 259 | } |
| 260 | |
| 261 | JNIEXPORT jbyteArray JNICALL |
| 262 | Java_java_util_zip_ZipFile_getEntryBytes(JNIEnv *env, |
| 263 | jclass cls, |
| 264 | jlong zentry, jint type) |
| 265 | { |
| 266 | jzentry *ze = jlong_to_ptr(zentry); |
| 267 | int len = 0; |
| 268 | jbyteArray jba = NULL; |
| 269 | switch (type) { |
| 270 | case java_util_zip_ZipFile_JZENTRY_NAME: |
| 271 | if (ze->name != 0) { |
| 272 | len = (int)strlen(ze->name); |
| 273 | if (len == 0 || (jba = (*env)->NewByteArray(env, len)) == NULL) |
| 274 | break; |
| 275 | (*env)->SetByteArrayRegion(env, jba, 0, len, (jbyte *)ze->name); |
| 276 | } |
| 277 | break; |
| 278 | case java_util_zip_ZipFile_JZENTRY_EXTRA: |
| 279 | if (ze->extra != 0) { |
| 280 | unsigned char *bp = (unsigned char *)&ze->extra[0]; |
| 281 | len = (bp[0] | (bp[1] << 8)); |
| 282 | if (len <= 0 || (jba = (*env)->NewByteArray(env, len)) == NULL) |
| 283 | break; |
| 284 | (*env)->SetByteArrayRegion(env, jba, 0, len, &ze->extra[2]); |
| 285 | } |
| 286 | break; |
| 287 | case java_util_zip_ZipFile_JZENTRY_COMMENT: |
| 288 | if (ze->comment != 0) { |
| 289 | len = (int)strlen(ze->comment); |
| 290 | if (len == 0 || (jba = (*env)->NewByteArray(env, len)) == NULL) |
| 291 | break; |
| 292 | (*env)->SetByteArrayRegion(env, jba, 0, len, (jbyte*)ze->comment); |
| 293 | } |
| 294 | break; |
| 295 | } |
| 296 | return jba; |
| 297 | } |
| 298 | |
| 299 | JNIEXPORT jint JNICALL |
| 300 | Java_java_util_zip_ZipFile_read(JNIEnv *env, jclass cls, jlong zfile, |
| 301 | jlong zentry, jlong pos, jbyteArray bytes, |
| 302 | jint off, jint len) |
| 303 | { |
| 304 | jzfile *zip = jlong_to_ptr(zfile); |
| 305 | char *msg; |
| 306 | |
| 307 | #define BUFSIZE 8192 |
| 308 | /* copy via tmp stack buffer: */ |
| 309 | jbyte buf[BUFSIZE]; |
| 310 | |
| 311 | if (len > BUFSIZE) { |
| 312 | len = BUFSIZE; |
| 313 | } |
| 314 | |
| 315 | ZIP_Lock(zip); |
| 316 | len = ZIP_Read(zip, jlong_to_ptr(zentry), pos, buf, len); |
| 317 | msg = zip->msg; |
| 318 | ZIP_Unlock(zip); |
| 319 | if (len != -1) { |
| 320 | (*env)->SetByteArrayRegion(env, bytes, off, len, buf); |
| 321 | } |
| 322 | |
| 323 | if (len == -1) { |
| 324 | if (msg != 0) { |
| 325 | ThrowZipException(env, msg); |
| 326 | } else { |
| 327 | char errmsg[128]; |
| 328 | sprintf(errmsg, "errno: %d, error: %s\n", |
| 329 | errno, "Error reading ZIP file"); |
| 330 | JNU_ThrowIOExceptionWithLastError(env, errmsg); |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | return len; |
| 335 | } |
| 336 | |
| 337 | /* |
| 338 | * Returns an array of strings representing the names of all entries |
| 339 | * that begin with "META-INF/" (case ignored). This native method is |
| 340 | * used in JarFile as an optimization when looking up manifest and |
| 341 | * signature file entries. Returns null if no entries were found. |
| 342 | */ |
| 343 | JNIEXPORT jobjectArray JNICALL |
| 344 | Java_java_util_jar_JarFile_getMetaInfEntryNames(JNIEnv *env, jobject obj) |
| 345 | { |
| 346 | jlong zfile = (*env)->GetLongField(env, obj, jzfileID); |
| 347 | jzfile *zip; |
| 348 | int i, count; |
| 349 | jobjectArray result = 0; |
| 350 | |
| 351 | if (zfile == 0) { |
| 352 | JNU_ThrowByName(env, |
| 353 | "java/lang/IllegalStateException", "zip file closed"); |
| 354 | return NULL; |
| 355 | } |
| 356 | zip = jlong_to_ptr(zfile); |
| 357 | |
| 358 | /* count the number of valid ZIP metanames */ |
| 359 | count = 0; |
| 360 | if (zip->metanames != 0) { |
| 361 | for (i = 0; i < zip->metacount; i++) { |
| 362 | if (zip->metanames[i] != 0) { |
| 363 | count++; |
| 364 | } |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | /* If some names were found then build array of java strings */ |
| 369 | if (count > 0) { |
| 370 | jclass cls = (*env)->FindClass(env, "java/lang/String"); |
| 371 | result = (*env)->NewObjectArray(env, count, cls, 0); |
| 372 | if (result != 0) { |
| 373 | for (i = 0; i < count; i++) { |
| 374 | jstring str = (*env)->NewStringUTF(env, zip->metanames[i]); |
| 375 | if (str == 0) { |
| 376 | break; |
| 377 | } |
| 378 | (*env)->SetObjectArrayElement(env, result, i, str); |
| 379 | (*env)->DeleteLocalRef(env, str); |
| 380 | } |
| 381 | } |
| 382 | } |
| 383 | return result; |
| 384 | } |
| 385 | |
| 386 | JNIEXPORT jstring JNICALL |
| 387 | Java_java_util_zip_ZipFile_getZipMessage(JNIEnv *env, jclass cls, jlong zfile) |
| 388 | { |
| 389 | jzfile *zip = jlong_to_ptr(zfile); |
| 390 | char *msg = zip->msg; |
| 391 | if (msg == NULL) { |
| 392 | return NULL; |
| 393 | } |
| 394 | return JNU_NewStringPlatform(env, msg); |
| 395 | } |