J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2006 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 | #include <assert.h> |
| 27 | #include <stdio.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <ctype.h> |
| 30 | #include <direct.h> |
| 31 | #include <windows.h> |
| 32 | #include <io.h> |
| 33 | |
| 34 | #include "jvm.h" |
| 35 | #include "jni.h" |
| 36 | #include "jni_util.h" |
| 37 | #include "jlong.h" |
| 38 | #include "io_util.h" |
| 39 | #include "dirent_md.h" |
| 40 | #include "java_io_FileSystem.h" |
| 41 | |
| 42 | /* This macro relies upon the fact that JNU_GetStringPlatformChars always makes |
| 43 | a copy of the string */ |
| 44 | |
| 45 | #define WITH_NATIVE_PATH(env, object, id, var) \ |
| 46 | WITH_FIELD_PLATFORM_STRING(env, object, id, var) \ |
| 47 | JVM_NativePath((char *)var); |
| 48 | |
| 49 | #define END_NATIVE_PATH(env, var) END_PLATFORM_STRING(env, var) |
| 50 | |
| 51 | |
| 52 | static struct { |
| 53 | jfieldID path; |
| 54 | } ids; |
| 55 | |
| 56 | JNIEXPORT void JNICALL |
| 57 | Java_java_io_Win32FileSystem_initIDs(JNIEnv *env, jclass cls) |
| 58 | { |
| 59 | jclass fileClass = (*env)->FindClass(env, "java/io/File"); |
| 60 | if (!fileClass) return; |
| 61 | ids.path = (*env)->GetFieldID(env, fileClass, |
| 62 | "path", "Ljava/lang/String;"); |
| 63 | } |
| 64 | |
| 65 | |
| 66 | /* -- Path operations -- */ |
| 67 | |
| 68 | |
| 69 | extern int canonicalize(char *path, const char *out, int len); |
| 70 | extern int canonicalizeWithPrefix(const char* canonicalPrefix, const char *pathWithCanonicalPrefix, char *out, int len); |
| 71 | |
| 72 | JNIEXPORT jstring JNICALL |
| 73 | Java_java_io_Win32FileSystem_canonicalize0(JNIEnv *env, jobject this, |
| 74 | jstring pathname) |
| 75 | { |
| 76 | jstring rv = NULL; |
| 77 | |
| 78 | WITH_PLATFORM_STRING(env, pathname, path) { |
| 79 | char canonicalPath[JVM_MAXPATHLEN]; |
| 80 | if (canonicalize(JVM_NativePath((char *)path), |
| 81 | canonicalPath, JVM_MAXPATHLEN) < 0) { |
| 82 | JNU_ThrowIOExceptionWithLastError(env, "Bad pathname"); |
| 83 | } else { |
| 84 | rv = JNU_NewStringPlatform(env, canonicalPath); |
| 85 | } |
| 86 | } END_PLATFORM_STRING(env, path); |
| 87 | return rv; |
| 88 | } |
| 89 | |
| 90 | |
| 91 | JNIEXPORT jstring JNICALL |
| 92 | Java_java_io_Win32FileSystem_canonicalizeWithPrefix0(JNIEnv *env, jobject this, |
| 93 | jstring canonicalPrefixString, |
| 94 | jstring pathWithCanonicalPrefixString) |
| 95 | { |
| 96 | jstring rv = NULL; |
| 97 | char canonicalPath[JVM_MAXPATHLEN]; |
| 98 | |
| 99 | WITH_PLATFORM_STRING(env, canonicalPrefixString, canonicalPrefix) { |
| 100 | WITH_PLATFORM_STRING(env, pathWithCanonicalPrefixString, pathWithCanonicalPrefix) { |
| 101 | if (canonicalizeWithPrefix(canonicalPrefix, |
| 102 | pathWithCanonicalPrefix, |
| 103 | canonicalPath, JVM_MAXPATHLEN) < 0) { |
| 104 | JNU_ThrowIOExceptionWithLastError(env, "Bad pathname"); |
| 105 | } else { |
| 106 | rv = JNU_NewStringPlatform(env, canonicalPath); |
| 107 | } |
| 108 | } END_PLATFORM_STRING(env, pathWithCanonicalPrefix); |
| 109 | } END_PLATFORM_STRING(env, canonicalPrefix); |
| 110 | return rv; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | |
| 115 | /* -- Attribute accessors -- */ |
| 116 | |
| 117 | /* Check whether or not the file name in "path" is a Windows reserved |
| 118 | device name (CON, PRN, AUX, NUL, COM[1-9], LPT[1-9]) based on the |
| 119 | returned result from GetFullPathName. If the file name in the path |
| 120 | is indeed a reserved device name GetFuulPathName returns |
| 121 | "\\.\[ReservedDeviceName]". |
| 122 | */ |
| 123 | BOOL isReservedDeviceName(const char* path) { |
| 124 | #define BUFSIZE 9 |
| 125 | char buf[BUFSIZE]; |
| 126 | char *lpf = NULL; |
| 127 | DWORD retLen = GetFullPathName(path, |
| 128 | BUFSIZE, |
| 129 | buf, |
| 130 | &lpf); |
| 131 | if ((retLen == BUFSIZE - 1 || retLen == BUFSIZE - 2) && |
| 132 | buf[0] == '\\' && buf[1] == '\\' && |
| 133 | buf[2] == '.' && buf[3] == '\\') { |
| 134 | char* dname = _strupr(buf + 4); |
| 135 | if (strcmp(dname, "CON") == 0 || |
| 136 | strcmp(dname, "PRN") == 0 || |
| 137 | strcmp(dname, "AUX") == 0 || |
| 138 | strcmp(dname, "NUL") == 0) |
| 139 | return TRUE; |
| 140 | if ((strncmp(dname, "COM", 3) == 0 || |
| 141 | strncmp(dname, "LPT", 3) == 0) && |
| 142 | dname[3] - '0' > 0 && |
| 143 | dname[3] - '0' <= 9) |
| 144 | return TRUE; |
| 145 | } |
| 146 | return FALSE; |
| 147 | } |
| 148 | |
| 149 | JNIEXPORT jint JNICALL |
| 150 | Java_java_io_Win32FileSystem_getBooleanAttributes(JNIEnv *env, jobject this, |
| 151 | jobject file) |
| 152 | { |
| 153 | jint rv = 0; |
| 154 | |
| 155 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 156 | WIN32_FILE_ATTRIBUTE_DATA wfad; |
| 157 | if (!isReservedDeviceName(path) && |
| 158 | GetFileAttributesEx(path, GetFileExInfoStandard, &wfad)) { |
| 159 | rv = (java_io_FileSystem_BA_EXISTS |
| 160 | | ((wfad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
| 161 | ? java_io_FileSystem_BA_DIRECTORY |
| 162 | : java_io_FileSystem_BA_REGULAR) |
| 163 | | ((wfad.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) |
| 164 | ? java_io_FileSystem_BA_HIDDEN : 0)); |
| 165 | } |
| 166 | } END_NATIVE_PATH(env, path); |
| 167 | return rv; |
| 168 | } |
| 169 | |
| 170 | |
| 171 | JNIEXPORT jboolean JNICALL |
| 172 | Java_java_io_Win32FileSystem_checkAccess(JNIEnv *env, jobject this, |
| 173 | jobject file, jint a) |
| 174 | { |
| 175 | jboolean rv = JNI_FALSE; |
| 176 | int mode; |
| 177 | switch (a) { |
| 178 | case java_io_FileSystem_ACCESS_READ: |
| 179 | case java_io_FileSystem_ACCESS_EXECUTE: |
| 180 | mode = 4; |
| 181 | break; |
| 182 | case java_io_FileSystem_ACCESS_WRITE: |
| 183 | mode = 2; |
| 184 | break; |
| 185 | default: assert(0); |
| 186 | } |
| 187 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 188 | if (access(path, mode) == 0) { |
| 189 | rv = JNI_TRUE; |
| 190 | } |
| 191 | } END_NATIVE_PATH(env, path); |
| 192 | return rv; |
| 193 | } |
| 194 | |
| 195 | JNIEXPORT jboolean JNICALL |
| 196 | Java_java_io_Win32FileSystem_setPermission(JNIEnv *env, jobject this, |
| 197 | jobject file, |
| 198 | jint access, |
| 199 | jboolean enable, |
| 200 | jboolean owneronly) |
| 201 | { |
| 202 | jboolean rv = JNI_FALSE; |
| 203 | if (access == java_io_FileSystem_ACCESS_READ || |
| 204 | access == java_io_FileSystem_ACCESS_EXECUTE) { |
| 205 | return enable; |
| 206 | } |
| 207 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 208 | DWORD a; |
| 209 | a = GetFileAttributes(path); |
| 210 | if (a != INVALID_FILE_ATTRIBUTES) { |
| 211 | if (enable) |
| 212 | a = a & ~FILE_ATTRIBUTE_READONLY; |
| 213 | else |
| 214 | a = a | FILE_ATTRIBUTE_READONLY; |
| 215 | if (SetFileAttributes(path, a)) |
| 216 | rv = JNI_TRUE; |
| 217 | } |
| 218 | } END_NATIVE_PATH(env, path); |
| 219 | return rv; |
| 220 | } |
| 221 | |
| 222 | JNIEXPORT jlong JNICALL |
| 223 | Java_java_io_Win32FileSystem_getLastModifiedTime(JNIEnv *env, jobject this, |
| 224 | jobject file) |
| 225 | { |
| 226 | jlong rv = 0; |
| 227 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 228 | /* Win95, Win98, WinME */ |
| 229 | WIN32_FIND_DATA fd; |
| 230 | jlong temp = 0; |
| 231 | LARGE_INTEGER modTime; |
| 232 | HANDLE h = FindFirstFile(path, &fd); |
| 233 | if (h != INVALID_HANDLE_VALUE) { |
| 234 | FindClose(h); |
| 235 | modTime.LowPart = (DWORD) fd.ftLastWriteTime.dwLowDateTime; |
| 236 | modTime.HighPart = (LONG) fd.ftLastWriteTime.dwHighDateTime; |
| 237 | rv = modTime.QuadPart / 10000; |
| 238 | rv -= 11644473600000; |
| 239 | } |
| 240 | } END_NATIVE_PATH(env, path); |
| 241 | return rv; |
| 242 | } |
| 243 | |
| 244 | JNIEXPORT jlong JNICALL |
| 245 | Java_java_io_Win32FileSystem_getLength(JNIEnv *env, jobject this, |
| 246 | jobject file) |
| 247 | { |
| 248 | jlong rv = 0; |
| 249 | |
| 250 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 251 | struct _stati64 sb; |
| 252 | if (_stati64(path, &sb) == 0) { |
| 253 | rv = sb.st_size; |
| 254 | } |
| 255 | } END_NATIVE_PATH(env, path); |
| 256 | return rv; |
| 257 | } |
| 258 | |
| 259 | |
| 260 | /* -- File operations -- */ |
| 261 | |
| 262 | |
| 263 | JNIEXPORT jboolean JNICALL |
| 264 | Java_java_io_Win32FileSystem_createFileExclusively(JNIEnv *env, jclass cls, |
| 265 | jstring pathname) |
| 266 | { |
| 267 | jboolean rv = JNI_FALSE; |
| 268 | DWORD a; |
| 269 | |
| 270 | WITH_PLATFORM_STRING(env, pathname, path) { |
| 271 | int orv; |
| 272 | int error; |
| 273 | JVM_NativePath((char *)path); |
| 274 | orv = JVM_Open(path, JVM_O_RDWR | JVM_O_CREAT | JVM_O_EXCL, 0666); |
| 275 | if (orv < 0) { |
| 276 | if (orv != JVM_EEXIST) { |
| 277 | error = GetLastError(); |
| 278 | |
| 279 | // If a directory by the named path already exists, |
| 280 | // return false (behavior of solaris and linux) instead of |
| 281 | // throwing an exception |
| 282 | a = GetFileAttributes(path); |
| 283 | |
| 284 | if ((a == INVALID_FILE_ATTRIBUTES) || |
| 285 | !(a & FILE_ATTRIBUTE_DIRECTORY)) { |
| 286 | SetLastError(error); |
| 287 | JNU_ThrowIOExceptionWithLastError(env, path); |
| 288 | } |
| 289 | } |
| 290 | } else { |
| 291 | JVM_Close(orv); |
| 292 | rv = JNI_TRUE; |
| 293 | } |
| 294 | } END_PLATFORM_STRING(env, path); |
| 295 | return rv; |
| 296 | } |
| 297 | |
| 298 | |
| 299 | static int |
| 300 | removeFileOrDirectory(const char *path) /* Returns 0 on success */ |
| 301 | { |
| 302 | DWORD a; |
| 303 | |
| 304 | SetFileAttributes(path, 0); |
| 305 | a = GetFileAttributes(path); |
| 306 | if (a == INVALID_FILE_ATTRIBUTES) { |
| 307 | return 1; |
| 308 | } else if (a & FILE_ATTRIBUTE_DIRECTORY) { |
| 309 | return !RemoveDirectory(path); |
| 310 | } else { |
| 311 | return !DeleteFile(path); |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | |
| 316 | JNIEXPORT jboolean JNICALL |
| 317 | Java_java_io_Win32FileSystem_delete0(JNIEnv *env, jobject this, |
| 318 | jobject file) |
| 319 | { |
| 320 | jboolean rv = JNI_FALSE; |
| 321 | |
| 322 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 323 | if (removeFileOrDirectory(path) == 0) { |
| 324 | rv = JNI_TRUE; |
| 325 | } |
| 326 | } END_NATIVE_PATH(env, path); |
| 327 | return rv; |
| 328 | } |
| 329 | |
| 330 | |
| 331 | /* ## Clean this up to use direct Win32 calls */ |
| 332 | |
| 333 | JNIEXPORT jobjectArray JNICALL |
| 334 | Java_java_io_Win32FileSystem_list(JNIEnv *env, jobject this, |
| 335 | jobject file) |
| 336 | { |
| 337 | DIR *dir; |
| 338 | struct dirent *ptr; |
| 339 | int len, maxlen; |
| 340 | jobjectArray rv, old; |
| 341 | |
| 342 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 343 | dir = opendir(path); |
| 344 | } END_NATIVE_PATH(env, path); |
| 345 | if (dir == NULL) return NULL; |
| 346 | |
| 347 | /* Allocate an initial String array */ |
| 348 | len = 0; |
| 349 | maxlen = 16; |
| 350 | rv = (*env)->NewObjectArray(env, maxlen, JNU_ClassString(env), NULL); |
| 351 | if (rv == NULL) goto error; |
| 352 | |
| 353 | /* Scan the directory */ |
| 354 | while ((ptr = readdir(dir)) != NULL) { |
| 355 | jstring name; |
| 356 | if (!strcmp(ptr->d_name, ".") || !strcmp(ptr->d_name, "..")) |
| 357 | continue; |
| 358 | if (len == maxlen) { |
| 359 | old = rv; |
| 360 | rv = (*env)->NewObjectArray(env, maxlen <<= 1, |
| 361 | JNU_ClassString(env), NULL); |
| 362 | if (rv == NULL) goto error; |
| 363 | if (JNU_CopyObjectArray(env, rv, old, len) < 0) goto error; |
| 364 | (*env)->DeleteLocalRef(env, old); |
| 365 | } |
| 366 | name = JNU_NewStringPlatform(env, ptr->d_name); |
| 367 | if (name == NULL) goto error; |
| 368 | (*env)->SetObjectArrayElement(env, rv, len++, name); |
| 369 | (*env)->DeleteLocalRef(env, name); |
| 370 | } |
| 371 | closedir(dir); |
| 372 | |
| 373 | /* Copy the final results into an appropriately-sized array */ |
| 374 | old = rv; |
| 375 | rv = (*env)->NewObjectArray(env, len, JNU_ClassString(env), NULL); |
| 376 | if (rv == NULL) goto error; |
| 377 | if (JNU_CopyObjectArray(env, rv, old, len) < 0) goto error; |
| 378 | return rv; |
| 379 | |
| 380 | error: |
| 381 | closedir(dir); |
| 382 | return NULL; |
| 383 | } |
| 384 | |
| 385 | |
| 386 | JNIEXPORT jboolean JNICALL |
| 387 | Java_java_io_Win32FileSystem_createDirectory(JNIEnv *env, jobject this, |
| 388 | jobject file) |
| 389 | { |
| 390 | jboolean rv = JNI_FALSE; |
| 391 | |
| 392 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 393 | if (mkdir(path) == 0) { |
| 394 | rv = JNI_TRUE; |
| 395 | } |
| 396 | } END_NATIVE_PATH(env, path); |
| 397 | return rv; |
| 398 | } |
| 399 | |
| 400 | |
| 401 | JNIEXPORT jboolean JNICALL |
| 402 | Java_java_io_Win32FileSystem_rename0(JNIEnv *env, jobject this, |
| 403 | jobject from, jobject to) |
| 404 | { |
| 405 | jboolean rv = JNI_FALSE; |
| 406 | |
| 407 | WITH_NATIVE_PATH(env, from, ids.path, fromPath) { |
| 408 | WITH_NATIVE_PATH(env, to, ids.path, toPath) { |
| 409 | if (rename(fromPath, toPath) == 0) { |
| 410 | rv = JNI_TRUE; |
| 411 | } |
| 412 | } END_NATIVE_PATH(env, toPath); |
| 413 | } END_NATIVE_PATH(env, fromPath); |
| 414 | return rv; |
| 415 | } |
| 416 | |
| 417 | |
| 418 | JNIEXPORT jboolean JNICALL |
| 419 | Java_java_io_Win32FileSystem_setLastModifiedTime(JNIEnv *env, jobject this, |
| 420 | jobject file, jlong time) |
| 421 | { |
| 422 | jboolean rv = JNI_FALSE; |
| 423 | |
| 424 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 425 | HANDLE h; |
| 426 | h = CreateFile(path, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, |
| 427 | FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS, 0); |
| 428 | if (h != INVALID_HANDLE_VALUE) { |
| 429 | LARGE_INTEGER modTime; |
| 430 | FILETIME t; |
| 431 | modTime.QuadPart = (time + 11644473600000L) * 10000L; |
| 432 | t.dwLowDateTime = (DWORD)modTime.LowPart; |
| 433 | t.dwHighDateTime = (DWORD)modTime.HighPart; |
| 434 | if (SetFileTime(h, NULL, NULL, &t)) { |
| 435 | rv = JNI_TRUE; |
| 436 | } |
| 437 | CloseHandle(h); |
| 438 | } |
| 439 | } END_NATIVE_PATH(env, path); |
| 440 | |
| 441 | return rv; |
| 442 | } |
| 443 | |
| 444 | |
| 445 | JNIEXPORT jboolean JNICALL |
| 446 | Java_java_io_Win32FileSystem_setReadOnly(JNIEnv *env, jobject this, |
| 447 | jobject file) |
| 448 | { |
| 449 | jboolean rv = JNI_FALSE; |
| 450 | |
| 451 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 452 | DWORD a; |
| 453 | a = GetFileAttributes(path); |
| 454 | if (a != INVALID_FILE_ATTRIBUTES) { |
| 455 | if (SetFileAttributes(path, a | FILE_ATTRIBUTE_READONLY)) |
| 456 | rv = JNI_TRUE; |
| 457 | } |
| 458 | } END_NATIVE_PATH(env, path); |
| 459 | return rv; |
| 460 | } |
| 461 | |
| 462 | |
| 463 | /* -- Filesystem interface -- */ |
| 464 | |
| 465 | |
| 466 | JNIEXPORT jobject JNICALL |
| 467 | Java_java_io_Win32FileSystem_getDriveDirectory(JNIEnv *env, jclass ignored, |
| 468 | jint drive) |
| 469 | { |
| 470 | char buf[_MAX_PATH]; |
| 471 | char *p = _getdcwd(drive, buf, sizeof(buf)); |
| 472 | if (p == NULL) return NULL; |
| 473 | if (isalpha(*p) && (p[1] == ':')) p += 2; |
| 474 | return JNU_NewStringPlatform(env, p); |
| 475 | } |
| 476 | |
| 477 | |
| 478 | JNIEXPORT jint JNICALL |
| 479 | Java_java_io_Win32FileSystem_listRoots0(JNIEnv *env, jclass ignored) |
| 480 | { |
| 481 | return GetLogicalDrives(); |
| 482 | } |
| 483 | |
| 484 | JNIEXPORT jlong JNICALL |
| 485 | Java_java_io_Win32FileSystem_getSpace0(JNIEnv *env, jobject this, |
| 486 | jobject file, jint t) |
| 487 | { |
| 488 | jlong rv = 0L; |
| 489 | |
| 490 | WITH_NATIVE_PATH(env, file, ids.path, path) { |
| 491 | ULARGE_INTEGER totalSpace, freeSpace, usableSpace; |
| 492 | if (GetDiskFreeSpaceEx(path, &usableSpace, &totalSpace, &freeSpace)) { |
| 493 | switch(t) { |
| 494 | case java_io_FileSystem_SPACE_TOTAL: |
| 495 | rv = long_to_jlong(totalSpace.QuadPart); |
| 496 | break; |
| 497 | case java_io_FileSystem_SPACE_FREE: |
| 498 | rv = long_to_jlong(freeSpace.QuadPart); |
| 499 | break; |
| 500 | case java_io_FileSystem_SPACE_USABLE: |
| 501 | rv = long_to_jlong(usableSpace.QuadPart); |
| 502 | break; |
| 503 | default: |
| 504 | assert(0); |
| 505 | } |
| 506 | } |
| 507 | } END_NATIVE_PATH(env, path); |
| 508 | return rv; |
| 509 | } |