1 /*
2 * Copyright (c) 1997, 2014, 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 #include <stdlib.h>
27 #include <string.h>
28
29 #include "jvm.h"
30 #include "jni.h"
31 #include "jni_util.h"
32
33 /* Due to a bug in the win32 C runtime library strings
34 * such as "z:" need to be appended with a "." so we
35 * must allocate at least 4 bytes to allow room for
36 * this expansion. See 4235353 for details.
37 */
38 #define MALLOC_MIN4(len) ((char *)malloc((len) + 1 < 4 ? 4 : (len) + 1))
39
40 /**
41 * Throw a Java exception by name. Similar to SignalError.
42 */
43 JNIEXPORT void JNICALL
44 JNU_ThrowByName(JNIEnv *env, const char *name, const char *msg)
45 {
46 jclass cls = (*env)->FindClass(env, name);
47
48 if (cls != 0) /* Otherwise an exception has already been thrown */
49 (*env)->ThrowNew(env, cls, msg);
50 }
51
52 /* JNU_Throw common exceptions */
53
54 JNIEXPORT void JNICALL
55 JNU_ThrowNullPointerException(JNIEnv *env, const char *msg)
56 {
57 JNU_ThrowByName(env, "java/lang/NullPointerException", msg);
58 }
59
60 JNIEXPORT void JNICALL
61 JNU_ThrowArrayIndexOutOfBoundsException(JNIEnv *env, const char *msg)
62 {
63 JNU_ThrowByName(env, "java/lang/ArrayIndexOutOfBoundsException", msg);
64 }
65
66 JNIEXPORT void JNICALL
67 JNU_ThrowOutOfMemoryError(JNIEnv *env, const char *msg)
68 {
69 JNU_ThrowByName(env, "java/lang/OutOfMemoryError", msg);
70 }
71
72 JNIEXPORT void JNICALL
73 JNU_ThrowIllegalArgumentException(JNIEnv *env, const char *msg)
74 {
75 JNU_ThrowByName(env, "java/lang/IllegalArgumentException", msg);
76 }
77
78 JNIEXPORT void JNICALL
79 JNU_ThrowIllegalAccessError(JNIEnv *env, const char *msg)
80 {
81 JNU_ThrowByName(env, "java/lang/IllegalAccessError", msg);
82 }
83
84 JNIEXPORT void JNICALL
85 JNU_ThrowIllegalAccessException(JNIEnv *env, const char *msg)
86 {
87 JNU_ThrowByName(env, "java/lang/IllegalAccessException", msg);
88 }
89
90 JNIEXPORT void JNICALL
91 JNU_ThrowInternalError(JNIEnv *env, const char *msg)
92 {
93 JNU_ThrowByName(env, "java/lang/InternalError", msg);
94 }
95
96 JNIEXPORT void JNICALL
97 JNU_ThrowNoSuchFieldException(JNIEnv *env, const char *msg)
98 {
99 JNU_ThrowByName(env, "java/lang/NoSuchFieldException", msg);
100 }
101
102 JNIEXPORT void JNICALL
103 JNU_ThrowNoSuchMethodException(JNIEnv *env, const char *msg)
104 {
105 JNU_ThrowByName(env, "java/lang/NoSuchMethodException", msg);
106 }
107
108 JNIEXPORT void JNICALL
109 JNU_ThrowClassNotFoundException(JNIEnv *env, const char *msg)
110 {
111 JNU_ThrowByName(env, "java/lang/ClassNotFoundException", msg);
112 }
113
114 JNIEXPORT void JNICALL
115 JNU_ThrowNumberFormatException(JNIEnv *env, const char *msg)
116 {
117 JNU_ThrowByName(env, "java/lang/NumberFormatException", msg);
118 }
119
120 JNIEXPORT void JNICALL
121 JNU_ThrowIOException(JNIEnv *env, const char *msg)
122 {
123 JNU_ThrowByName(env, "java/io/IOException", msg);
124 }
125
126 JNIEXPORT void JNICALL
127 JNU_ThrowNoSuchFieldError(JNIEnv *env, const char *msg)
128 {
129 JNU_ThrowByName(env, "java/lang/NoSuchFieldError", msg);
130 }
131
132 JNIEXPORT void JNICALL
133 JNU_ThrowNoSuchMethodError(JNIEnv *env, const char *msg)
134 {
135 JNU_ThrowByName(env, "java/lang/NoSuchMethodError", msg);
136 }
137
138 JNIEXPORT void JNICALL
139 JNU_ThrowStringIndexOutOfBoundsException(JNIEnv *env, const char *msg)
140 {
141 JNU_ThrowByName(env, "java/lang/StringIndexOutOfBoundsException", msg);
142 }
143
144 JNIEXPORT void JNICALL
145 JNU_ThrowInstantiationException(JNIEnv *env, const char *msg)
146 {
147 JNU_ThrowByName(env, "java/lang/InstantiationException", msg);
148 }
149
150
151 /* Throw an exception by name, using the string returned by
152 * JVM_LastErrorString for the detail string. If the last-error
153 * string is NULL, use the given default detail string.
154 */
155 JNIEXPORT void JNICALL
156 JNU_ThrowByNameWithLastError(JNIEnv *env, const char *name,
157 const char *defaultDetail)
158 {
159 char buf[256];
160 size_t n = getLastErrorString(buf, sizeof(buf));
161
162 if (n > 0) {
163 jstring s = JNU_NewStringPlatform(env, buf);
164 if (s != NULL) {
165 jobject x = JNU_NewObjectByName(env, name,
166 "(Ljava/lang/String;)V", s);
167 if (x != NULL) {
168 (*env)->Throw(env, x);
169 }
170 }
171 }
172 if (!(*env)->ExceptionOccurred(env)) {
173 JNU_ThrowByName(env, name, defaultDetail);
174 }
175 }
176
177 /* Throw an IOException, using the last-error string for the detail
178 * string. If the last-error string is NULL, use the given default
179 * detail string.
180 */
181 JNIEXPORT void JNICALL
182 JNU_ThrowIOExceptionWithLastError(JNIEnv *env, const char *defaultDetail)
183 {
184 JNU_ThrowByNameWithLastError(env, "java/io/IOException", defaultDetail);
185 }
186
187
188 JNIEXPORT jvalue JNICALL
189 JNU_CallStaticMethodByName(JNIEnv *env,
190 jboolean *hasException,
191 const char *class_name,
192 const char *name,
193 const char *signature,
194 ...)
195 {
196 jclass clazz;
197 jmethodID mid;
198 va_list args;
199 jvalue result;
200 const char *p = signature;
201
202 /* find out the return type */
203 while (*p && *p != ')')
204 p++;
205 p++;
206
207 result.i = 0;
208
209 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
210 goto done2;
211
212 clazz = (*env)->FindClass(env, class_name);
213 if (clazz == 0)
214 goto done2;
215 mid = (*env)->GetStaticMethodID(env, clazz, name, signature);
216 if (mid == 0)
217 goto done1;
218 va_start(args, signature);
219 switch (*p) {
220 case 'V':
221 (*env)->CallStaticVoidMethodV(env, clazz, mid, args);
222 break;
223 case '[':
224 case 'L':
225 result.l = (*env)->CallStaticObjectMethodV(env, clazz, mid, args);
226 break;
227 case 'Z':
228 result.z = (*env)->CallStaticBooleanMethodV(env, clazz, mid, args);
229 break;
230 case 'B':
231 result.b = (*env)->CallStaticByteMethodV(env, clazz, mid, args);
232 break;
233 case 'C':
234 result.c = (*env)->CallStaticCharMethodV(env, clazz, mid, args);
235 break;
236 case 'S':
237 result.s = (*env)->CallStaticShortMethodV(env, clazz, mid, args);
238 break;
239 case 'I':
240 result.i = (*env)->CallStaticIntMethodV(env, clazz, mid, args);
241 break;
242 case 'J':
243 result.j = (*env)->CallStaticLongMethodV(env, clazz, mid, args);
244 break;
245 case 'F':
246 result.f = (*env)->CallStaticFloatMethodV(env, clazz, mid, args);
247 break;
248 case 'D':
249 result.d = (*env)->CallStaticDoubleMethodV(env, clazz, mid, args);
250 break;
251 default:
252 (*env)->FatalError(env, "JNU_CallStaticMethodByName: illegal signature");
253 }
254 va_end(args);
255
256 done1:
257 (*env)->DeleteLocalRef(env, clazz);
258 done2:
259 if (hasException) {
260 *hasException = (*env)->ExceptionCheck(env);
261 }
262 return result;
263 }
264
265 JNIEXPORT jvalue JNICALL
266 JNU_CallMethodByName(JNIEnv *env,
267 jboolean *hasException,
268 jobject obj,
269 const char *name,
270 const char *signature,
271 ...)
272 {
273 jvalue result;
274 va_list args;
275
276 va_start(args, signature);
277 result = JNU_CallMethodByNameV(env, hasException, obj, name, signature,
278 args);
279 va_end(args);
280
281 return result;
282 }
283
284
285 JNIEXPORT jvalue JNICALL
286 JNU_CallMethodByNameV(JNIEnv *env,
287 jboolean *hasException,
288 jobject obj,
289 const char *name,
290 const char *signature,
291 va_list args)
292 {
293 jclass clazz;
294 jmethodID mid;
295 jvalue result;
296 const char *p = signature;
297
298 /* find out the return type */
299 while (*p && *p != ')')
300 p++;
301 p++;
302
303 result.i = 0;
304
305 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
306 goto done2;
307
308 clazz = (*env)->GetObjectClass(env, obj);
309 mid = (*env)->GetMethodID(env, clazz, name, signature);
310 if (mid == 0)
311 goto done1;
312
313 switch (*p) {
314 case 'V':
315 (*env)->CallVoidMethodV(env, obj, mid, args);
316 break;
317 case '[':
318 case 'L':
319 result.l = (*env)->CallObjectMethodV(env, obj, mid, args);
320 break;
321 case 'Z':
322 result.z = (*env)->CallBooleanMethodV(env, obj, mid, args);
323 break;
324 case 'B':
325 result.b = (*env)->CallByteMethodV(env, obj, mid, args);
326 break;
327 case 'C':
328 result.c = (*env)->CallCharMethodV(env, obj, mid, args);
329 break;
330 case 'S':
331 result.s = (*env)->CallShortMethodV(env, obj, mid, args);
332 break;
333 case 'I':
334 result.i = (*env)->CallIntMethodV(env, obj, mid, args);
335 break;
336 case 'J':
337 result.j = (*env)->CallLongMethodV(env, obj, mid, args);
338 break;
339 case 'F':
340 result.f = (*env)->CallFloatMethodV(env, obj, mid, args);
341 break;
342 case 'D':
343 result.d = (*env)->CallDoubleMethodV(env, obj, mid, args);
344 break;
345 default:
346 (*env)->FatalError(env, "JNU_CallMethodByNameV: illegal signature");
347 }
348 done1:
349 (*env)->DeleteLocalRef(env, clazz);
350 done2:
351 if (hasException) {
352 *hasException = (*env)->ExceptionCheck(env);
353 }
354 return result;
355 }
356
357 JNIEXPORT jobject JNICALL
358 JNU_NewObjectByName(JNIEnv *env, const char *class_name,
359 const char *constructor_sig, ...)
360 {
361 jobject obj = NULL;
362
363 jclass cls = 0;
364 jmethodID cls_initMID;
365 va_list args;
366
367 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
368 goto done;
369
370 cls = (*env)->FindClass(env, class_name);
371 if (cls == 0) {
372 goto done;
373 }
374 cls_initMID = (*env)->GetMethodID(env, cls,
375 "<init>", constructor_sig);
376 if (cls_initMID == NULL) {
377 goto done;
378 }
379 va_start(args, constructor_sig);
380 obj = (*env)->NewObjectV(env, cls, cls_initMID, args);
381 va_end(args);
382
383 done:
384 (*env)->DeleteLocalRef(env, cls);
385 return obj;
386 }
387
388 /* Optimized for char set ISO_8559_1 */
389 static jstring
390 newString8859_1(JNIEnv *env, const char *str)
391 {
392 int len = (int)strlen(str);
393 jchar buf[512];
394 jchar *str1;
395 jstring result;
396 int i;
397
398 if (len > 512) {
399 str1 = (jchar *)malloc(len * sizeof(jchar));
400 if (str1 == 0) {
401 JNU_ThrowOutOfMemoryError(env, 0);
402 return 0;
403 }
404 } else
405 str1 = buf;
406
407 for (i=0;i<len;i++)
408 str1[i] = (unsigned char)str[i];
409 result = (*env)->NewString(env, str1, len);
410 if (str1 != buf)
411 free(str1);
412 return result;
413 }
414
415 static const char*
416 getString8859_1Chars(JNIEnv *env, jstring jstr)
417 {
418 int i;
419 char *result;
420 jint len = (*env)->GetStringLength(env, jstr);
421 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
422 if (str == 0) {
423 return 0;
424 }
425
426 result = MALLOC_MIN4(len);
427 if (result == 0) {
428 (*env)->ReleaseStringCritical(env, jstr, str);
429 JNU_ThrowOutOfMemoryError(env, 0);
430 return 0;
431 }
432
433 for (i=0; i<len; i++) {
434 jchar unicode = str[i];
435 if (unicode <= 0x00ff)
436 result[i] = (char)unicode;
437 else
438 result[i] = '?';
439 }
440
441 result[len] = 0;
442 (*env)->ReleaseStringCritical(env, jstr, str);
443 return result;
444 }
445
446
447 /* Optimized for char set ISO646-US (us-ascii) */
448 static jstring
449 newString646_US(JNIEnv *env, const char *str)
450 {
451 int len = (int)strlen(str);
452 jchar buf[512];
453 jchar *str1;
454 jstring result;
455 int i;
456
457 if (len > 512) {
458 str1 = (jchar *)malloc(len * sizeof(jchar));
459 if (str1 == 0) {
460 JNU_ThrowOutOfMemoryError(env, 0);
461 return 0;
462 }
463 } else
464 str1 = buf;
465
466 for (i=0; i<len; i++) {
467 unsigned char c = (unsigned char)str[i];
468 if (c <= 0x7f)
469 str1[i] = c;
470 else
471 str1[i] = '?';
472 }
473
474 result = (*env)->NewString(env, str1, len);
475 if (str1 != buf)
476 free(str1);
477 return result;
478 }
479
480 static const char*
481 getString646_USChars(JNIEnv *env, jstring jstr)
482 {
483 int i;
484 char *result;
485 jint len = (*env)->GetStringLength(env, jstr);
486 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
487 if (str == 0) {
488 return 0;
489 }
490
491 result = MALLOC_MIN4(len);
492 if (result == 0) {
493 (*env)->ReleaseStringCritical(env, jstr, str);
494 JNU_ThrowOutOfMemoryError(env, 0);
495 return 0;
496 }
497
498 for (i=0; i<len; i++) {
499 jchar unicode = str[i];
500 if (unicode <= 0x007f )
501 result[i] = (char)unicode;
502 else
503 result[i] = '?';
504 }
505
506 result[len] = 0;
507 (*env)->ReleaseStringCritical(env, jstr, str);
508 return result;
509 }
510
511 /* enumeration of c1 row from Cp1252 */
512 static int cp1252c1chars[32] = {
513 0x20AC,0xFFFD,0x201A,0x0192,0x201E,0x2026,0x2020,0x2021,
514 0x02C6,0x2030,0x0160,0x2039,0x0152,0xFFFD,0x017D,0xFFFD,
515 0xFFFD,0x2018,0x2019,0x201C,0x201D,0x2022,0x2013,0x2014,
516 0x02Dc,0x2122,0x0161,0x203A,0x0153,0xFFFD,0x017E,0x0178
517 };
518
519 /* Optimized for char set Cp1252 */
520 static jstring
521 newStringCp1252(JNIEnv *env, const char *str)
522 {
523 int len = (int) strlen(str);
524 jchar buf[512];
525 jchar *str1;
526 jstring result;
527 int i;
528 if (len > 512) {
529 str1 = (jchar *)malloc(len * sizeof(jchar));
530 if (str1 == 0) {
531 JNU_ThrowOutOfMemoryError(env, 0);
532 return 0;
533 }
534 } else
535 str1 = buf;
536
537 for (i=0; i<len; i++) {
538 unsigned char c = (unsigned char)str[i];
539 if ((c >= 0x80) && (c <= 0x9f))
540 str1[i] = cp1252c1chars[c-128];
541 else
542 str1[i] = c;
543 }
544
545 result = (*env)->NewString(env, str1, len);
546 if (str1 != buf)
547 free(str1);
548 return result;
549 }
550
551 static const char*
552 getStringCp1252Chars(JNIEnv *env, jstring jstr)
553 {
554 int i;
555 char *result;
556 jint len = (*env)->GetStringLength(env, jstr);
557 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
558 if (str == 0) {
559 return 0;
560 }
561
562 result = MALLOC_MIN4(len);
563 if (result == 0) {
564 (*env)->ReleaseStringCritical(env, jstr, str);
565 JNU_ThrowOutOfMemoryError(env, 0);
566 return 0;
567 }
568
569 for (i=0; i<len; i++) {
570 jchar c = str[i];
571 if (c < 256)
572 result[i] = (char)c;
573 else switch(c) {
574 case 0x20AC: result[i] = (char)0x80; break;
575 case 0x201A: result[i] = (char)0x82; break;
576 case 0x0192: result[i] = (char)0x83; break;
577 case 0x201E: result[i] = (char)0x84; break;
578 case 0x2026: result[i] = (char)0x85; break;
579 case 0x2020: result[i] = (char)0x86; break;
580 case 0x2021: result[i] = (char)0x87; break;
581 case 0x02C6: result[i] = (char)0x88; break;
582 case 0x2030: result[i] = (char)0x89; break;
583 case 0x0160: result[i] = (char)0x8A; break;
584 case 0x2039: result[i] = (char)0x8B; break;
585 case 0x0152: result[i] = (char)0x8C; break;
586 case 0x017D: result[i] = (char)0x8E; break;
587 case 0x2018: result[i] = (char)0x91; break;
588 case 0x2019: result[i] = (char)0x92; break;
589 case 0x201C: result[i] = (char)0x93; break;
590 case 0x201D: result[i] = (char)0x94; break;
591 case 0x2022: result[i] = (char)0x95; break;
592 case 0x2013: result[i] = (char)0x96; break;
593 case 0x2014: result[i] = (char)0x97; break;
594 case 0x02DC: result[i] = (char)0x98; break;
595 case 0x2122: result[i] = (char)0x99; break;
596 case 0x0161: result[i] = (char)0x9A; break;
597 case 0x203A: result[i] = (char)0x9B; break;
598 case 0x0153: result[i] = (char)0x9C; break;
599 case 0x017E: result[i] = (char)0x9E; break;
600 case 0x0178: result[i] = (char)0x9F; break;
601 default: result[i] = '?'; break;
602 }
603 }
604
605 result[len] = 0;
606 (*env)->ReleaseStringCritical(env, jstr, str);
607 return result;
608 }
609
610 static int fastEncoding = NO_ENCODING_YET;
611 static jstring jnuEncoding = NULL;
612
613 /* Cached method IDs */
614 static jmethodID String_init_ID; /* String(byte[], enc) */
615 static jmethodID String_getBytes_ID; /* String.getBytes(enc) */
616
617 int getFastEncoding() {
618 return fastEncoding;
619 }
620
621 /* Initialize the fast encoding. If the "sun.jnu.encoding" property
622 * has not yet been set, we leave fastEncoding == NO_ENCODING_YET.
623 */
624 void
625 initializeEncoding(JNIEnv *env)
626 {
627 jstring propname = 0;
628 jstring enc = 0;
629 jclass strClazz = NULL;
630
631 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
632 return;
633
634 strClazz = JNU_ClassString(env);
635 CHECK_NULL(strClazz);
636
637 propname = (*env)->NewStringUTF(env, "sun.jnu.encoding");
638 if (propname) {
639 jboolean exc;
640 enc = JNU_CallStaticMethodByName
641 (env,
642 &exc,
643 "java/lang/System",
644 "getProperty",
645 "(Ljava/lang/String;)Ljava/lang/String;",
646 propname).l;
647 if (!exc) {
648 if (enc) {
649 const char* encname = (*env)->GetStringUTFChars(env, enc, 0);
650 if (encname) {
651 /*
652 * On Solaris with nl_langinfo() called in GetJavaProperties():
653 *
654 * locale undefined -> NULL -> hardcoded default
655 * "C" locale -> "" -> hardcoded default (on 2.6)
656 * "C" locale -> "ISO646-US" (on Sol 7/8)
657 * "en_US" locale -> "ISO8859-1"
658 * "en_GB" locale -> "ISO8859-1" (on Sol 7/8)
659 * "en_UK" locale -> "ISO8859-1" (on 2.6)
660 */
661 if ((strcmp(encname, "8859_1") == 0) ||
662 (strcmp(encname, "ISO8859-1") == 0) ||
663 (strcmp(encname, "ISO8859_1") == 0) ||
664 (strcmp(encname, "ISO-8859-1") == 0))
665 fastEncoding = FAST_8859_1;
666 else if (strcmp(encname, "ISO646-US") == 0)
667 fastEncoding = FAST_646_US;
668 else if (strcmp(encname, "Cp1252") == 0 ||
669 /* This is a temporary fix until we move */
670 /* to wide character versions of all Windows */
671 /* calls. */
672 strcmp(encname, "utf-16le") == 0)
673 fastEncoding = FAST_CP1252;
674 else {
675 fastEncoding = NO_FAST_ENCODING;
676 jnuEncoding = (jstring)(*env)->NewGlobalRef(env, enc);
677 }
678 (*env)->ReleaseStringUTFChars(env, enc, encname);
679 }
680 }
681 } else {
682 (*env)->ExceptionClear(env);
683 }
684 } else {
685 (*env)->ExceptionClear(env);
686 }
687 (*env)->DeleteLocalRef(env, propname);
688 (*env)->DeleteLocalRef(env, enc);
689
690 /* Initialize method-id cache */
691 String_getBytes_ID = (*env)->GetMethodID(env, strClazz,
692 "getBytes", "(Ljava/lang/String;)[B");
693 CHECK_NULL(String_getBytes_ID);
694 String_init_ID = (*env)->GetMethodID(env, strClazz,
695 "<init>", "([BLjava/lang/String;)V");
696 }
697
698 static jboolean isJNUEncodingSupported = JNI_FALSE;
699 static jboolean jnuEncodingSupported(JNIEnv *env) {
700 jboolean exe;
701 if (isJNUEncodingSupported == JNI_TRUE) {
702 return JNI_TRUE;
703 }
704 isJNUEncodingSupported = (jboolean) JNU_CallStaticMethodByName (
705 env, &exe,
706 "java/nio/charset/Charset",
707 "isSupported",
708 "(Ljava/lang/String;)Z",
709 jnuEncoding).z;
710 return isJNUEncodingSupported;
711 }
712
713
714 JNIEXPORT jstring
715 NewStringPlatform(JNIEnv *env, const char *str)
716 {
717 return JNU_NewStringPlatform(env, str);
718 }
719
720 JNIEXPORT jstring JNICALL
721 JNU_NewStringPlatform(JNIEnv *env, const char *str)
722 {
723 jstring result = NULL;
724 jbyteArray hab = 0;
725 int len;
726
727 if (fastEncoding == NO_ENCODING_YET) {
728 initializeEncoding(env);
729 JNU_CHECK_EXCEPTION_RETURN(env, NULL);
730 }
731
732 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
733 return newString8859_1(env, str);
734 if (fastEncoding == FAST_646_US)
735 return newString646_US(env, str);
736 if (fastEncoding == FAST_CP1252)
737 return newStringCp1252(env, str);
738
739 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
740 return NULL;
741
742 len = (int)strlen(str);
743 hab = (*env)->NewByteArray(env, len);
744 if (hab != 0) {
745 jclass strClazz = JNU_ClassString(env);
746 CHECK_NULL_RETURN(strClazz, 0);
747 (*env)->SetByteArrayRegion(env, hab, 0, len, (jbyte *)str);
748 if (jnuEncodingSupported(env)) {
749 result = (*env)->NewObject(env, strClazz,
750 String_init_ID, hab, jnuEncoding);
751 } else {
752 /*If the encoding specified in sun.jnu.encoding is not endorsed
753 by "Charset.isSupported" we have to fall back to use String(byte[])
754 explicitly here without specifying the encoding name, in which the
755 StringCoding class will pickup the iso-8859-1 as the fallback
756 converter for us.
757 */
758 jmethodID mid = (*env)->GetMethodID(env, strClazz,
759 "<init>", "([B)V");
760 if (mid != NULL) {
761 result = (*env)->NewObject(env, strClazz, mid, hab);
762 }
763 }
764 (*env)->DeleteLocalRef(env, hab);
765 return result;
766 }
767 return NULL;
768 }
769
770 JNIEXPORT const char *
771 GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
772 {
773 return JNU_GetStringPlatformChars(env, jstr, isCopy);
774 }
775
776 JNIEXPORT const char * JNICALL
777 JNU_GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
778 {
779 char *result = NULL;
780 jbyteArray hab = 0;
781
782 if (isCopy)
783 *isCopy = JNI_TRUE;
784
785 if (fastEncoding == NO_ENCODING_YET) {
786 initializeEncoding(env);
787 JNU_CHECK_EXCEPTION_RETURN(env, 0);
788 }
789
790 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
791 return getString8859_1Chars(env, jstr);
792 if (fastEncoding == FAST_646_US)
793 return getString646_USChars(env, jstr);
794 if (fastEncoding == FAST_CP1252)
795 return getStringCp1252Chars(env, jstr);
796
797 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
798 return 0;
799
800 if (jnuEncodingSupported(env)) {
801 hab = (*env)->CallObjectMethod(env, jstr, String_getBytes_ID, jnuEncoding);
802 } else {
803 jmethodID mid;
804 jclass strClazz = JNU_ClassString(env);
805 CHECK_NULL_RETURN(strClazz, 0);
806 mid = (*env)->GetMethodID(env, strClazz,
807 "getBytes", "()[B");
808 if (mid != NULL) {
809 hab = (*env)->CallObjectMethod(env, jstr, mid);
810 }
811 }
812
813 if (!(*env)->ExceptionCheck(env)) {
814 jint len = (*env)->GetArrayLength(env, hab);
815 result = MALLOC_MIN4(len);
816 if (result == 0) {
817 JNU_ThrowOutOfMemoryError(env, 0);
818 (*env)->DeleteLocalRef(env, hab);
819 return 0;
820 }
821 (*env)->GetByteArrayRegion(env, hab, 0, len, (jbyte *)result);
822 result[len] = 0; /* NULL-terminate */
823 }
824
825 (*env)->DeleteLocalRef(env, hab);
826 return result;
827 }
828
829 JNIEXPORT void JNICALL
830 JNU_ReleaseStringPlatformChars(JNIEnv *env, jstring jstr, const char *str)
831 {
832 free((void *)str);
833 }
834
835 /*
836 * Export the platform dependent path canonicalization so that
837 * VM can find it when loading system classes.
838 * This function is also used by the instrumentation agent.
839 */
840 extern int canonicalize(char *path, const char *out, int len);
841
842 JNIEXPORT int
843 Canonicalize(JNIEnv *unused, char *orig, char *out, int len)
844 {
845 /* canonicalize an already natived path */
846 return canonicalize(orig, out, len);
847 }
848
849 JNIEXPORT jclass JNICALL
850 JNU_ClassString(JNIEnv *env)
851 {
852 static jclass cls = 0;
853 if (cls == 0) {
854 jclass c;
855 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
856 return 0;
857 c = (*env)->FindClass(env, "java/lang/String");
858 CHECK_NULL_RETURN(c, NULL);
859 cls = (*env)->NewGlobalRef(env, c);
860 (*env)->DeleteLocalRef(env, c);
861 }
862 return cls;
863 }
864
865 JNIEXPORT jclass JNICALL
866 JNU_ClassClass(JNIEnv *env)
867 {
868 static jclass cls = 0;
869 if (cls == 0) {
870 jclass c;
871 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
872 return 0;
873 c = (*env)->FindClass(env, "java/lang/Class");
874 CHECK_NULL_RETURN(c, NULL);
875 cls = (*env)->NewGlobalRef(env, c);
876 (*env)->DeleteLocalRef(env, c);
877 }
878 return cls;
879 }
880
881 JNIEXPORT jclass JNICALL
882 JNU_ClassObject(JNIEnv *env)
883 {
884 static jclass cls = 0;
885 if (cls == 0) {
886 jclass c;
887 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
888 return 0;
889 c = (*env)->FindClass(env, "java/lang/Object");
890 CHECK_NULL_RETURN(c, NULL);
891 cls = (*env)->NewGlobalRef(env, c);
892 (*env)->DeleteLocalRef(env, c);
893 }
894 return cls;
895 }
896
897 JNIEXPORT jclass JNICALL
898 JNU_ClassThrowable(JNIEnv *env)
899 {
900 static jclass cls = 0;
901 if (cls == 0) {
902 jclass c;
903 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
904 return 0;
905 c = (*env)->FindClass(env, "java/lang/Throwable");
906 CHECK_NULL_RETURN(c, NULL);
907 cls = (*env)->NewGlobalRef(env, c);
908 (*env)->DeleteLocalRef(env, c);
909 }
910 return cls;
911 }
912
913 JNIEXPORT jint JNICALL
914 JNU_CopyObjectArray(JNIEnv *env, jobjectArray dst, jobjectArray src,
915 jint count)
916 {
917 int i;
918 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
919 return -1;
920 for (i=0; i<count; i++) {
921 jstring p = (*env)->GetObjectArrayElement(env, src, i);
922 (*env)->SetObjectArrayElement(env, dst, i, p);
923 (*env)->DeleteLocalRef(env, p);
924 }
925 return 0;
926 }
927
928 JNIEXPORT void * JNICALL
929 JNU_GetEnv(JavaVM *vm, jint version)
930 {
931 void *env;
932 (*vm)->GetEnv(vm, &env, version);
933 return env;
934 }
935
936 JNIEXPORT jint JNICALL
937 JNU_IsInstanceOfByName(JNIEnv *env, jobject object, char* classname)
938 {
939 jclass cls;
940 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
941 return JNI_ERR;
942 cls = (*env)->FindClass(env, classname);
943 if (cls != NULL) {
944 jint result = (*env)->IsInstanceOf(env, object, cls);
945 (*env)->DeleteLocalRef(env, cls);
946 return result;
947 }
948 return JNI_ERR;
949 }
950
951 JNIEXPORT jboolean JNICALL
952 JNU_Equals(JNIEnv *env, jobject object1, jobject object2)
953 {
954 static jmethodID mid = NULL;
955 if (mid == NULL) {
956 jclass objClazz = JNU_ClassObject(env);
957 CHECK_NULL_RETURN(objClazz, JNI_FALSE);
958 mid = (*env)->GetMethodID(env, objClazz, "equals",
959 "(Ljava/lang/Object;)Z");
960 CHECK_NULL_RETURN(mid, JNI_FALSE);
961 }
962 return (*env)->CallBooleanMethod(env, object1, mid, object2);
963 }
964
965
966 /************************************************************************
967 * Thread calls
968 */
969
970 static jmethodID Object_waitMID;
971 static jmethodID Object_notifyMID;
972 static jmethodID Object_notifyAllMID;
973
974 JNIEXPORT void JNICALL
975 JNU_MonitorWait(JNIEnv *env, jobject object, jlong timeout)
976 {
977 if (object == NULL) {
978 JNU_ThrowNullPointerException(env, "JNU_MonitorWait argument");
979 return;
980 }
981 if (Object_waitMID == NULL) {
982 jclass cls = JNU_ClassObject(env);
983 if (cls == NULL) {
984 return;
985 }
986 Object_waitMID = (*env)->GetMethodID(env, cls, "wait", "(J)V");
987 if (Object_waitMID == NULL) {
988 return;
989 }
990 }
991 (*env)->CallVoidMethod(env, object, Object_waitMID, timeout);
992 }
993
994 JNIEXPORT void JNICALL
995 JNU_Notify(JNIEnv *env, jobject object)
996 {
997 if (object == NULL) {
998 JNU_ThrowNullPointerException(env, "JNU_Notify argument");
999 return;
1000 }
1001 if (Object_notifyMID == NULL) {
1002 jclass cls = JNU_ClassObject(env);
1003 if (cls == NULL) {
1004 return;
1005 }
1006 Object_notifyMID = (*env)->GetMethodID(env, cls, "notify", "()V");
1007 if (Object_notifyMID == NULL) {
1008 return;
1009 }
1010 }
1011 (*env)->CallVoidMethod(env, object, Object_notifyMID);
1012 }
1013
1014 JNIEXPORT void JNICALL
1015 JNU_NotifyAll(JNIEnv *env, jobject object)
1016 {
1017 if (object == NULL) {
1018 JNU_ThrowNullPointerException(env, "JNU_NotifyAll argument");
1019 return;
1020 }
1021 if (Object_notifyAllMID == NULL) {
1022 jclass cls = JNU_ClassObject(env);
1023 if (cls == NULL) {
1024 return;
1025 }
1026 Object_notifyAllMID = (*env)->GetMethodID(env, cls,"notifyAll", "()V");
1027 if (Object_notifyAllMID == NULL) {
1028 return;
1029 }
1030 }
1031 (*env)->CallVoidMethod(env, object, Object_notifyAllMID);
1032 }
1033
1034
1035 /************************************************************************
1036 * Debugging utilities
1037 */
1038
1039 JNIEXPORT void JNICALL
1040 JNU_PrintString(JNIEnv *env, char *hdr, jstring string)
1041 {
1042 if (string == NULL) {
1043 fprintf(stderr, "%s: is NULL\n", hdr);
1044 } else {
1045 const char *stringPtr = JNU_GetStringPlatformChars(env, string, 0);
1046 if (stringPtr == 0)
1047 return;
1048 fprintf(stderr, "%s: %s\n", hdr, stringPtr);
1049 JNU_ReleaseStringPlatformChars(env, string, stringPtr);
1050 }
1051 }
1052
1053 JNIEXPORT void JNICALL
1054 JNU_PrintClass(JNIEnv *env, char* hdr, jobject object)
1055 {
1056 if (object == NULL) {
1057 fprintf(stderr, "%s: object is NULL\n", hdr);
1058 return;
1059 } else {
1060 jclass cls = (*env)->GetObjectClass(env, object);
1061 jstring clsName = JNU_ToString(env, cls);
1062 if (clsName == NULL) {
1063 JNU_PrintString(env, hdr, clsName);
1064 }
1065 (*env)->DeleteLocalRef(env, cls);
1066 (*env)->DeleteLocalRef(env, clsName);
1067 }
1068 }
1069
1070 JNIEXPORT jstring JNICALL
1071 JNU_ToString(JNIEnv *env, jobject object)
1072 {
1073 if (object == NULL) {
1074 return (*env)->NewStringUTF(env, "NULL");
1075 } else {
1076 return (jstring)JNU_CallMethodByName(env,
1077 NULL,
1078 object,
1079 "toString",
1080 "()Ljava/lang/String;").l;
1081 }
1082 }
1083
1084 JNIEXPORT jvalue JNICALL
1085 JNU_GetFieldByName(JNIEnv *env,
1086 jboolean *hasException,
1087 jobject obj,
1088 const char *name,
1089 const char *signature)
1090 {
1091 jclass cls;
1092 jfieldID fid;
1093 jvalue result;
1094
1095 result.i = 0;
1096
1097 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1098 goto done2;
1099
1100 cls = (*env)->GetObjectClass(env, obj);
1101 fid = (*env)->GetFieldID(env, cls, name, signature);
1102 if (fid == 0)
1103 goto done1;
1104
1105 switch (*signature) {
1106 case '[':
1107 case 'L':
1108 result.l = (*env)->GetObjectField(env, obj, fid);
1109 break;
1110 case 'Z':
1111 result.z = (*env)->GetBooleanField(env, obj, fid);
1112 break;
1113 case 'B':
1114 result.b = (*env)->GetByteField(env, obj, fid);
1115 break;
1116 case 'C':
1117 result.c = (*env)->GetCharField(env, obj, fid);
1118 break;
1119 case 'S':
1120 result.s = (*env)->GetShortField(env, obj, fid);
1121 break;
1122 case 'I':
1123 result.i = (*env)->GetIntField(env, obj, fid);
1124 break;
1125 case 'J':
1126 result.j = (*env)->GetLongField(env, obj, fid);
1127 break;
1128 case 'F':
1129 result.f = (*env)->GetFloatField(env, obj, fid);
1130 break;
1131 case 'D':
1132 result.d = (*env)->GetDoubleField(env, obj, fid);
1133 break;
1134
1135 default:
1136 (*env)->FatalError(env, "JNU_GetFieldByName: illegal signature");
1137 }
1138
1139 done1:
1140 (*env)->DeleteLocalRef(env, cls);
1141 done2:
1142 if (hasException) {
1143 *hasException = (*env)->ExceptionCheck(env);
1144 }
1145 return result;
1146 }
1147
1148 JNIEXPORT void JNICALL
1149 JNU_SetFieldByName(JNIEnv *env,
1150 jboolean *hasException,
1151 jobject obj,
1152 const char *name,
1153 const char *signature,
1154 ...)
1155 {
1156 jclass cls;
1157 jfieldID fid;
1158 va_list args;
1159
1160 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1161 goto done2;
1162
1163 cls = (*env)->GetObjectClass(env, obj);
1164 fid = (*env)->GetFieldID(env, cls, name, signature);
1165 if (fid == 0)
1166 goto done1;
1167
1168 va_start(args, signature);
1169 switch (*signature) {
1170 case '[':
1171 case 'L':
1172 (*env)->SetObjectField(env, obj, fid, va_arg(args, jobject));
1173 break;
1174 case 'Z':
1175 (*env)->SetBooleanField(env, obj, fid, (jboolean)va_arg(args, int));
1176 break;
1177 case 'B':
1178 (*env)->SetByteField(env, obj, fid, (jbyte)va_arg(args, int));
1179 break;
1180 case 'C':
1181 (*env)->SetCharField(env, obj, fid, (jchar)va_arg(args, int));
1182 break;
1183 case 'S':
1184 (*env)->SetShortField(env, obj, fid, (jshort)va_arg(args, int));
1185 break;
1186 case 'I':
1187 (*env)->SetIntField(env, obj, fid, va_arg(args, jint));
1188 break;
1189 case 'J':
1190 (*env)->SetLongField(env, obj, fid, va_arg(args, jlong));
1191 break;
1192 case 'F':
1193 (*env)->SetFloatField(env, obj, fid, (jfloat)va_arg(args, jdouble));
1194 break;
1195 case 'D':
1196 (*env)->SetDoubleField(env, obj, fid, va_arg(args, jdouble));
1197 break;
1198
1199 default:
1200 (*env)->FatalError(env, "JNU_SetFieldByName: illegal signature");
1201 }
1202 va_end(args);
1203
1204 done1:
1205 (*env)->DeleteLocalRef(env, cls);
1206 done2:
1207 if (hasException) {
1208 *hasException = (*env)->ExceptionCheck(env);
1209 }
1210 }
1211
1212 JNIEXPORT jvalue JNICALL
1213 JNU_GetStaticFieldByName(JNIEnv *env,
1214 jboolean *hasException,
1215 const char *classname,
1216 const char *name,
1217 const char *signature)
1218 {
1219 jclass cls;
1220 jfieldID fid;
1221 jvalue result;
1222
1223 result.i = 0;
1224
1225 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1226 goto done2;
1227
1228 cls = (*env)->FindClass(env, classname);
1229 if (cls == 0)
1230 goto done2;
1231
1232 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1233 if (fid == 0)
1234 goto done1;
1235
1236 switch (*signature) {
1237 case '[':
1238 case 'L':
1239 result.l = (*env)->GetStaticObjectField(env, cls, fid);
1240 break;
1241 case 'Z':
1242 result.z = (*env)->GetStaticBooleanField(env, cls, fid);
1243 break;
1244 case 'B':
1245 result.b = (*env)->GetStaticByteField(env, cls, fid);
1246 break;
1247 case 'C':
1248 result.c = (*env)->GetStaticCharField(env, cls, fid);
1249 break;
1250 case 'S':
1251 result.s = (*env)->GetStaticShortField(env, cls, fid);
1252 break;
1253 case 'I':
1254 result.i = (*env)->GetStaticIntField(env, cls, fid);
1255 break;
1256 case 'J':
1257 result.j = (*env)->GetStaticLongField(env, cls, fid);
1258 break;
1259 case 'F':
1260 result.f = (*env)->GetStaticFloatField(env, cls, fid);
1261 break;
1262 case 'D':
1263 result.d = (*env)->GetStaticDoubleField(env, cls, fid);
1264 break;
1265
1266 default:
1267 (*env)->FatalError(env, "JNU_GetStaticFieldByName: illegal signature");
1268 }
1269
1270 done1:
1271 (*env)->DeleteLocalRef(env, cls);
1272 done2:
1273 if (hasException) {
1274 *hasException = (*env)->ExceptionCheck(env);
1275 }
1276 return result;
1277 }
1278
1279 JNIEXPORT void JNICALL
1280 JNU_SetStaticFieldByName(JNIEnv *env,
1281 jboolean *hasException,
1282 const char *classname,
1283 const char *name,
1284 const char *signature,
1285 ...)
1286 {
1287 jclass cls;
1288 jfieldID fid;
1289 va_list args;
1290
1291 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1292 goto done2;
1293
1294 cls = (*env)->FindClass(env, classname);
1295 if (cls == 0)
1296 goto done2;
1297
1298 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1299 if (fid == 0)
1300 goto done1;
1301
1302 va_start(args, signature);
1303 switch (*signature) {
1304 case '[':
1305 case 'L':
1306 (*env)->SetStaticObjectField(env, cls, fid, va_arg(args, jobject));
1307 break;
1308 case 'Z':
1309 (*env)->SetStaticBooleanField(env, cls, fid, (jboolean)va_arg(args, int));
1310 break;
1311 case 'B':
1312 (*env)->SetStaticByteField(env, cls, fid, (jbyte)va_arg(args, int));
1313 break;
1314 case 'C':
1315 (*env)->SetStaticCharField(env, cls, fid, (jchar)va_arg(args, int));
1316 break;
1317 case 'S':
1318 (*env)->SetStaticShortField(env, cls, fid, (jshort)va_arg(args, int));
1319 break;
1320 case 'I':
1321 (*env)->SetStaticIntField(env, cls, fid, va_arg(args, jint));
1322 break;
1323 case 'J':
1324 (*env)->SetStaticLongField(env, cls, fid, va_arg(args, jlong));
1325 break;
1326 case 'F':
1327 (*env)->SetStaticFloatField(env, cls, fid, (jfloat)va_arg(args, jdouble));
1328 break;
1329 case 'D':
1330 (*env)->SetStaticDoubleField(env, cls, fid, va_arg(args, jdouble));
1331 break;
1332
1333 default:
1334 (*env)->FatalError(env, "JNU_SetStaticFieldByName: illegal signature");
1335 }
1336 va_end(args);
1337
1338 done1:
1339 (*env)->DeleteLocalRef(env, cls);
1340 done2:
1341 if (hasException) {
1342 *hasException = (*env)->ExceptionCheck(env);
1343 }
1344 }