1 /*
2 * Copyright (c) 1997, 2016, 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 * getLastErrorString 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 /*
178 * Throw an exception by name, using a given message and the string
179 * returned by getLastErrorString to construct the detail string.
180 */
181 JNIEXPORT void JNICALL
182 JNU_ThrowByNameWithMessageAndLastError
183 (JNIEnv *env, const char *name, const char *message)
184 {
185 char buf[256];
186 size_t n = getLastErrorString(buf, sizeof(buf));
187 size_t messagelen = message == NULL ? 0 : strlen(message);
188
189 if (n > 0) {
190 jstring s = JNU_NewStringPlatform(env, buf);
191 if (s != NULL) {
192 jobject x = NULL;
193 if (messagelen) {
194 jstring s2 = NULL;
195 size_t messageextlen = messagelen + 4;
196 char *str1 = (char *)malloc((messageextlen) * sizeof(char));
197 if (str1 == 0) {
198 JNU_ThrowOutOfMemoryError(env, 0);
199 return;
200 }
201 jio_snprintf(str1, messageextlen, " (%s)", message);
202 s2 = (*env)->NewStringUTF(env, str1);
203 free(str1);
204 JNU_CHECK_EXCEPTION(env);
205 if (s2 != NULL) {
206 jstring s3 = JNU_CallMethodByName(
207 env, NULL, s, "concat",
208 "(Ljava/lang/String;)Ljava/lang/String;",
209 s2).l;
210 (*env)->DeleteLocalRef(env, s2);
211 JNU_CHECK_EXCEPTION(env);
212 if (s3 != NULL) {
213 (*env)->DeleteLocalRef(env, s);
214 s = s3;
215 }
216 }
217 }
218 x = JNU_NewObjectByName(env, name, "(Ljava/lang/String;)V", s);
219 if (x != NULL) {
220 (*env)->Throw(env, x);
221 }
222 }
223 }
224
225 if (!(*env)->ExceptionOccurred(env)) {
226 if (messagelen) {
227 JNU_ThrowByName(env, name, message);
228 } else {
229 JNU_ThrowByName(env, name, "no further information");
230 }
231 }
232 }
233
234 /*
235 * Convenience method.
236 * Call JNU_ThrowByNameWithLastError for java.io.IOException.
237 */
238 JNIEXPORT void JNICALL
239 JNU_ThrowIOExceptionWithLastError(JNIEnv *env, const char *defaultDetail)
240 {
241 JNU_ThrowByNameWithLastError(env, "java/io/IOException", defaultDetail);
242 }
243
244
245 JNIEXPORT jvalue JNICALL
246 JNU_CallStaticMethodByName(JNIEnv *env,
247 jboolean *hasException,
248 const char *class_name,
249 const char *name,
250 const char *signature,
251 ...)
252 {
253 jclass clazz;
254 jmethodID mid;
255 va_list args;
256 jvalue result;
257 const char *p = signature;
258
259 /* find out the return type */
260 while (*p && *p != ')')
261 p++;
262 p++;
263
264 result.i = 0;
265
266 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
267 goto done2;
268
269 clazz = (*env)->FindClass(env, class_name);
270 if (clazz == 0)
271 goto done2;
272 mid = (*env)->GetStaticMethodID(env, clazz, name, signature);
273 if (mid == 0)
274 goto done1;
275 va_start(args, signature);
276 switch (*p) {
277 case 'V':
278 (*env)->CallStaticVoidMethodV(env, clazz, mid, args);
279 break;
280 case '[':
281 case 'L':
282 result.l = (*env)->CallStaticObjectMethodV(env, clazz, mid, args);
283 break;
284 case 'Z':
285 result.z = (*env)->CallStaticBooleanMethodV(env, clazz, mid, args);
286 break;
287 case 'B':
288 result.b = (*env)->CallStaticByteMethodV(env, clazz, mid, args);
289 break;
290 case 'C':
291 result.c = (*env)->CallStaticCharMethodV(env, clazz, mid, args);
292 break;
293 case 'S':
294 result.s = (*env)->CallStaticShortMethodV(env, clazz, mid, args);
295 break;
296 case 'I':
297 result.i = (*env)->CallStaticIntMethodV(env, clazz, mid, args);
298 break;
299 case 'J':
300 result.j = (*env)->CallStaticLongMethodV(env, clazz, mid, args);
301 break;
302 case 'F':
303 result.f = (*env)->CallStaticFloatMethodV(env, clazz, mid, args);
304 break;
305 case 'D':
306 result.d = (*env)->CallStaticDoubleMethodV(env, clazz, mid, args);
307 break;
308 default:
309 (*env)->FatalError(env, "JNU_CallStaticMethodByName: illegal signature");
310 }
311 va_end(args);
312
313 done1:
314 (*env)->DeleteLocalRef(env, clazz);
315 done2:
316 if (hasException) {
317 *hasException = (*env)->ExceptionCheck(env);
318 }
319 return result;
320 }
321
322 JNIEXPORT jvalue JNICALL
323 JNU_CallMethodByName(JNIEnv *env,
324 jboolean *hasException,
325 jobject obj,
326 const char *name,
327 const char *signature,
328 ...)
329 {
330 jvalue result;
331 va_list args;
332
333 va_start(args, signature);
334 result = JNU_CallMethodByNameV(env, hasException, obj, name, signature,
335 args);
336 va_end(args);
337
338 return result;
339 }
340
341
342 JNIEXPORT jvalue JNICALL
343 JNU_CallMethodByNameV(JNIEnv *env,
344 jboolean *hasException,
345 jobject obj,
346 const char *name,
347 const char *signature,
348 va_list args)
349 {
350 jclass clazz;
351 jmethodID mid;
352 jvalue result;
353 const char *p = signature;
354
355 /* find out the return type */
356 while (*p && *p != ')')
357 p++;
358 p++;
359
360 result.i = 0;
361
362 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
363 goto done2;
364
365 clazz = (*env)->GetObjectClass(env, obj);
366 mid = (*env)->GetMethodID(env, clazz, name, signature);
367 if (mid == 0)
368 goto done1;
369
370 switch (*p) {
371 case 'V':
372 (*env)->CallVoidMethodV(env, obj, mid, args);
373 break;
374 case '[':
375 case 'L':
376 result.l = (*env)->CallObjectMethodV(env, obj, mid, args);
377 break;
378 case 'Z':
379 result.z = (*env)->CallBooleanMethodV(env, obj, mid, args);
380 break;
381 case 'B':
382 result.b = (*env)->CallByteMethodV(env, obj, mid, args);
383 break;
384 case 'C':
385 result.c = (*env)->CallCharMethodV(env, obj, mid, args);
386 break;
387 case 'S':
388 result.s = (*env)->CallShortMethodV(env, obj, mid, args);
389 break;
390 case 'I':
391 result.i = (*env)->CallIntMethodV(env, obj, mid, args);
392 break;
393 case 'J':
394 result.j = (*env)->CallLongMethodV(env, obj, mid, args);
395 break;
396 case 'F':
397 result.f = (*env)->CallFloatMethodV(env, obj, mid, args);
398 break;
399 case 'D':
400 result.d = (*env)->CallDoubleMethodV(env, obj, mid, args);
401 break;
402 default:
403 (*env)->FatalError(env, "JNU_CallMethodByNameV: illegal signature");
404 }
405 done1:
406 (*env)->DeleteLocalRef(env, clazz);
407 done2:
408 if (hasException) {
409 *hasException = (*env)->ExceptionCheck(env);
410 }
411 return result;
412 }
413
414 JNIEXPORT jobject JNICALL
415 JNU_NewObjectByName(JNIEnv *env, const char *class_name,
416 const char *constructor_sig, ...)
417 {
418 jobject obj = NULL;
419
420 jclass cls = 0;
421 jmethodID cls_initMID;
422 va_list args;
423
424 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
425 goto done;
426
427 cls = (*env)->FindClass(env, class_name);
428 if (cls == 0) {
429 goto done;
430 }
431 cls_initMID = (*env)->GetMethodID(env, cls,
432 "<init>", constructor_sig);
433 if (cls_initMID == NULL) {
434 goto done;
435 }
436 va_start(args, constructor_sig);
437 obj = (*env)->NewObjectV(env, cls, cls_initMID, args);
438 va_end(args);
439
440 done:
441 (*env)->DeleteLocalRef(env, cls);
442 return obj;
443 }
444
445 /* Optimized for char set ISO_8559_1 */
446 static jstring
447 newString8859_1(JNIEnv *env, const char *str)
448 {
449 int len = (int)strlen(str);
450 jchar buf[512];
451 jchar *str1;
452 jstring result;
453 int i;
454
455 if (len > 512) {
456 str1 = (jchar *)malloc(len * sizeof(jchar));
457 if (str1 == 0) {
458 JNU_ThrowOutOfMemoryError(env, 0);
459 return 0;
460 }
461 } else
462 str1 = buf;
463
464 for (i=0;i<len;i++)
465 str1[i] = (unsigned char)str[i];
466 result = (*env)->NewString(env, str1, len);
467 if (str1 != buf)
468 free(str1);
469 return result;
470 }
471
472 static const char*
473 getString8859_1Chars(JNIEnv *env, jstring jstr)
474 {
475 int i;
476 char *result;
477 jint len = (*env)->GetStringLength(env, jstr);
478 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
479 if (str == 0) {
480 return 0;
481 }
482
483 result = MALLOC_MIN4(len);
484 if (result == 0) {
485 (*env)->ReleaseStringCritical(env, jstr, str);
486 JNU_ThrowOutOfMemoryError(env, 0);
487 return 0;
488 }
489
490 for (i=0; i<len; i++) {
491 jchar unicode = str[i];
492 if (unicode <= 0x00ff)
493 result[i] = (char)unicode;
494 else
495 result[i] = '?';
496 }
497
498 result[len] = 0;
499 (*env)->ReleaseStringCritical(env, jstr, str);
500 return result;
501 }
502
503
504 /* Optimized for char set ISO646-US (us-ascii) */
505 static jstring
506 newString646_US(JNIEnv *env, const char *str)
507 {
508 int len = (int)strlen(str);
509 jchar buf[512];
510 jchar *str1;
511 jstring result;
512 int i;
513
514 if (len > 512) {
515 str1 = (jchar *)malloc(len * sizeof(jchar));
516 if (str1 == 0) {
517 JNU_ThrowOutOfMemoryError(env, 0);
518 return 0;
519 }
520 } else
521 str1 = buf;
522
523 for (i=0; i<len; i++) {
524 unsigned char c = (unsigned char)str[i];
525 if (c <= 0x7f)
526 str1[i] = c;
527 else
528 str1[i] = '?';
529 }
530
531 result = (*env)->NewString(env, str1, len);
532 if (str1 != buf)
533 free(str1);
534 return result;
535 }
536
537 static const char*
538 getString646_USChars(JNIEnv *env, jstring jstr)
539 {
540 int i;
541 char *result;
542 jint len = (*env)->GetStringLength(env, jstr);
543 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
544 if (str == 0) {
545 return 0;
546 }
547
548 result = MALLOC_MIN4(len);
549 if (result == 0) {
550 (*env)->ReleaseStringCritical(env, jstr, str);
551 JNU_ThrowOutOfMemoryError(env, 0);
552 return 0;
553 }
554
555 for (i=0; i<len; i++) {
556 jchar unicode = str[i];
557 if (unicode <= 0x007f )
558 result[i] = (char)unicode;
559 else
560 result[i] = '?';
561 }
562
563 result[len] = 0;
564 (*env)->ReleaseStringCritical(env, jstr, str);
565 return result;
566 }
567
568 /* enumeration of c1 row from Cp1252 */
569 static int cp1252c1chars[32] = {
570 0x20AC,0xFFFD,0x201A,0x0192,0x201E,0x2026,0x2020,0x2021,
571 0x02C6,0x2030,0x0160,0x2039,0x0152,0xFFFD,0x017D,0xFFFD,
572 0xFFFD,0x2018,0x2019,0x201C,0x201D,0x2022,0x2013,0x2014,
573 0x02Dc,0x2122,0x0161,0x203A,0x0153,0xFFFD,0x017E,0x0178
574 };
575
576 /* Optimized for char set Cp1252 */
577 static jstring
578 newStringCp1252(JNIEnv *env, const char *str)
579 {
580 int len = (int) strlen(str);
581 jchar buf[512];
582 jchar *str1;
583 jstring result;
584 int i;
585 if (len > 512) {
586 str1 = (jchar *)malloc(len * sizeof(jchar));
587 if (str1 == 0) {
588 JNU_ThrowOutOfMemoryError(env, 0);
589 return 0;
590 }
591 } else
592 str1 = buf;
593
594 for (i=0; i<len; i++) {
595 unsigned char c = (unsigned char)str[i];
596 if ((c >= 0x80) && (c <= 0x9f))
597 str1[i] = cp1252c1chars[c-128];
598 else
599 str1[i] = c;
600 }
601
602 result = (*env)->NewString(env, str1, len);
603 if (str1 != buf)
604 free(str1);
605 return result;
606 }
607
608 static const char*
609 getStringCp1252Chars(JNIEnv *env, jstring jstr)
610 {
611 int i;
612 char *result;
613 jint len = (*env)->GetStringLength(env, jstr);
614 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
615 if (str == 0) {
616 return 0;
617 }
618
619 result = MALLOC_MIN4(len);
620 if (result == 0) {
621 (*env)->ReleaseStringCritical(env, jstr, str);
622 JNU_ThrowOutOfMemoryError(env, 0);
623 return 0;
624 }
625
626 for (i=0; i<len; i++) {
627 jchar c = str[i];
628 if (c < 256)
629 result[i] = (char)c;
630 else switch(c) {
631 case 0x20AC: result[i] = (char)0x80; break;
632 case 0x201A: result[i] = (char)0x82; break;
633 case 0x0192: result[i] = (char)0x83; break;
634 case 0x201E: result[i] = (char)0x84; break;
635 case 0x2026: result[i] = (char)0x85; break;
636 case 0x2020: result[i] = (char)0x86; break;
637 case 0x2021: result[i] = (char)0x87; break;
638 case 0x02C6: result[i] = (char)0x88; break;
639 case 0x2030: result[i] = (char)0x89; break;
640 case 0x0160: result[i] = (char)0x8A; break;
641 case 0x2039: result[i] = (char)0x8B; break;
642 case 0x0152: result[i] = (char)0x8C; break;
643 case 0x017D: result[i] = (char)0x8E; break;
644 case 0x2018: result[i] = (char)0x91; break;
645 case 0x2019: result[i] = (char)0x92; break;
646 case 0x201C: result[i] = (char)0x93; break;
647 case 0x201D: result[i] = (char)0x94; break;
648 case 0x2022: result[i] = (char)0x95; break;
649 case 0x2013: result[i] = (char)0x96; break;
650 case 0x2014: result[i] = (char)0x97; break;
651 case 0x02DC: result[i] = (char)0x98; break;
652 case 0x2122: result[i] = (char)0x99; break;
653 case 0x0161: result[i] = (char)0x9A; break;
654 case 0x203A: result[i] = (char)0x9B; break;
655 case 0x0153: result[i] = (char)0x9C; break;
656 case 0x017E: result[i] = (char)0x9E; break;
657 case 0x0178: result[i] = (char)0x9F; break;
658 default: result[i] = '?'; break;
659 }
660 }
661
662 result[len] = 0;
663 (*env)->ReleaseStringCritical(env, jstr, str);
664 return result;
665 }
666
667 static int fastEncoding = NO_ENCODING_YET;
668 static jstring jnuEncoding = NULL;
669
670 /* Cached method IDs */
671 static jmethodID String_init_ID; /* String(byte[], enc) */
672 static jmethodID String_getBytes_ID; /* String.getBytes(enc) */
673
674 int getFastEncoding() {
675 return fastEncoding;
676 }
677
678 /* Initialize the fast encoding. If the "sun.jnu.encoding" property
679 * has not yet been set, we leave fastEncoding == NO_ENCODING_YET.
680 */
681 void
682 initializeEncoding(JNIEnv *env)
683 {
684 jstring propname = 0;
685 jstring enc = 0;
686 jclass strClazz = NULL;
687
688 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
689 return;
690
691 strClazz = JNU_ClassString(env);
692 CHECK_NULL(strClazz);
693
694 propname = (*env)->NewStringUTF(env, "sun.jnu.encoding");
695 if (propname) {
696 jboolean exc;
697 enc = JNU_CallStaticMethodByName
698 (env,
699 &exc,
700 "java/lang/System",
701 "getProperty",
702 "(Ljava/lang/String;)Ljava/lang/String;",
703 propname).l;
704 if (!exc) {
705 if (enc) {
706 const char* encname = (*env)->GetStringUTFChars(env, enc, 0);
707 if (encname) {
708 /*
709 * On Solaris with nl_langinfo() called in GetJavaProperties():
710 *
711 * locale undefined -> NULL -> hardcoded default
712 * "C" locale -> "" -> hardcoded default (on 2.6)
713 * "C" locale -> "ISO646-US" (on Sol 7/8)
714 * "en_US" locale -> "ISO8859-1"
715 * "en_GB" locale -> "ISO8859-1" (on Sol 7/8)
716 * "en_UK" locale -> "ISO8859-1" (on 2.6)
717 */
718 if ((strcmp(encname, "8859_1") == 0) ||
719 (strcmp(encname, "ISO8859-1") == 0) ||
720 (strcmp(encname, "ISO8859_1") == 0) ||
721 (strcmp(encname, "ISO-8859-1") == 0))
722 fastEncoding = FAST_8859_1;
723 else if (strcmp(encname, "ISO646-US") == 0)
724 fastEncoding = FAST_646_US;
725 else if (strcmp(encname, "Cp1252") == 0 ||
726 /* This is a temporary fix until we move */
727 /* to wide character versions of all Windows */
728 /* calls. */
729 strcmp(encname, "utf-16le") == 0)
730 fastEncoding = FAST_CP1252;
731 else {
732 fastEncoding = NO_FAST_ENCODING;
733 jnuEncoding = (jstring)(*env)->NewGlobalRef(env, enc);
734 }
735 (*env)->ReleaseStringUTFChars(env, enc, encname);
736 }
737 }
738 } else {
739 (*env)->ExceptionClear(env);
740 }
741 } else {
742 (*env)->ExceptionClear(env);
743 }
744 (*env)->DeleteLocalRef(env, propname);
745 (*env)->DeleteLocalRef(env, enc);
746
747 /* Initialize method-id cache */
748 String_getBytes_ID = (*env)->GetMethodID(env, strClazz,
749 "getBytes", "(Ljava/lang/String;)[B");
750 CHECK_NULL(String_getBytes_ID);
751 String_init_ID = (*env)->GetMethodID(env, strClazz,
752 "<init>", "([BLjava/lang/String;)V");
753 }
754
755 static jboolean isJNUEncodingSupported = JNI_FALSE;
756 static jboolean jnuEncodingSupported(JNIEnv *env) {
757 jboolean exe;
758 if (isJNUEncodingSupported == JNI_TRUE) {
759 return JNI_TRUE;
760 }
761 isJNUEncodingSupported = (jboolean) JNU_CallStaticMethodByName (
762 env, &exe,
763 "java/nio/charset/Charset",
764 "isSupported",
765 "(Ljava/lang/String;)Z",
766 jnuEncoding).z;
767 return isJNUEncodingSupported;
768 }
769
770
771 JNIEXPORT jstring
772 NewStringPlatform(JNIEnv *env, const char *str)
773 {
774 return JNU_NewStringPlatform(env, str);
775 }
776
777 JNIEXPORT jstring JNICALL
778 JNU_NewStringPlatform(JNIEnv *env, const char *str)
779 {
780 jstring result = NULL;
781 jbyteArray hab = 0;
782 int len;
783
784 if (fastEncoding == NO_ENCODING_YET) {
785 initializeEncoding(env);
786 JNU_CHECK_EXCEPTION_RETURN(env, NULL);
787 }
788
789 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
790 return newString8859_1(env, str);
791 if (fastEncoding == FAST_646_US)
792 return newString646_US(env, str);
793 if (fastEncoding == FAST_CP1252)
794 return newStringCp1252(env, str);
795
796 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
797 return NULL;
798
799 len = (int)strlen(str);
800 hab = (*env)->NewByteArray(env, len);
801 if (hab != 0) {
802 jclass strClazz = JNU_ClassString(env);
803 CHECK_NULL_RETURN(strClazz, 0);
804 (*env)->SetByteArrayRegion(env, hab, 0, len, (jbyte *)str);
805 if (jnuEncodingSupported(env)) {
806 result = (*env)->NewObject(env, strClazz,
807 String_init_ID, hab, jnuEncoding);
808 } else {
809 /*If the encoding specified in sun.jnu.encoding is not endorsed
810 by "Charset.isSupported" we have to fall back to use String(byte[])
811 explicitly here without specifying the encoding name, in which the
812 StringCoding class will pickup the iso-8859-1 as the fallback
813 converter for us.
814 */
815 jmethodID mid = (*env)->GetMethodID(env, strClazz,
816 "<init>", "([B)V");
817 if (mid != NULL) {
818 result = (*env)->NewObject(env, strClazz, mid, hab);
819 }
820 }
821 (*env)->DeleteLocalRef(env, hab);
822 return result;
823 }
824 return NULL;
825 }
826
827 JNIEXPORT const char *
828 GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
829 {
830 return JNU_GetStringPlatformChars(env, jstr, isCopy);
831 }
832
833 JNIEXPORT const char * JNICALL
834 JNU_GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
835 {
836 char *result = NULL;
837 jbyteArray hab = 0;
838
839 if (isCopy)
840 *isCopy = JNI_TRUE;
841
842 if (fastEncoding == NO_ENCODING_YET) {
843 initializeEncoding(env);
844 JNU_CHECK_EXCEPTION_RETURN(env, 0);
845 }
846
847 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
848 return getString8859_1Chars(env, jstr);
849 if (fastEncoding == FAST_646_US)
850 return getString646_USChars(env, jstr);
851 if (fastEncoding == FAST_CP1252)
852 return getStringCp1252Chars(env, jstr);
853
854 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
855 return 0;
856
857 if (jnuEncodingSupported(env)) {
858 hab = (*env)->CallObjectMethod(env, jstr, String_getBytes_ID, jnuEncoding);
859 } else {
860 jmethodID mid;
861 jclass strClazz = JNU_ClassString(env);
862 CHECK_NULL_RETURN(strClazz, 0);
863 mid = (*env)->GetMethodID(env, strClazz,
864 "getBytes", "()[B");
865 if (mid != NULL) {
866 hab = (*env)->CallObjectMethod(env, jstr, mid);
867 }
868 }
869
870 if (!(*env)->ExceptionCheck(env)) {
871 jint len = (*env)->GetArrayLength(env, hab);
872 result = MALLOC_MIN4(len);
873 if (result == 0) {
874 JNU_ThrowOutOfMemoryError(env, 0);
875 (*env)->DeleteLocalRef(env, hab);
876 return 0;
877 }
878 (*env)->GetByteArrayRegion(env, hab, 0, len, (jbyte *)result);
879 result[len] = 0; /* NULL-terminate */
880 }
881
882 (*env)->DeleteLocalRef(env, hab);
883 return result;
884 }
885
886 JNIEXPORT void JNICALL
887 JNU_ReleaseStringPlatformChars(JNIEnv *env, jstring jstr, const char *str)
888 {
889 free((void *)str);
890 }
891
892 /*
893 * Export the platform dependent path canonicalization so that
894 * VM can find it when loading system classes.
895 * This function is also used by the instrumentation agent.
896 */
897 extern int canonicalize(char *path, const char *out, int len);
898
899 JNIEXPORT int
900 Canonicalize(JNIEnv *unused, char *orig, char *out, int len)
901 {
902 /* canonicalize an already natived path */
903 return canonicalize(orig, out, len);
904 }
905
906 JNIEXPORT jclass JNICALL
907 JNU_ClassString(JNIEnv *env)
908 {
909 static jclass cls = 0;
910 if (cls == 0) {
911 jclass c;
912 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
913 return 0;
914 c = (*env)->FindClass(env, "java/lang/String");
915 CHECK_NULL_RETURN(c, NULL);
916 cls = (*env)->NewGlobalRef(env, c);
917 (*env)->DeleteLocalRef(env, c);
918 }
919 return cls;
920 }
921
922 JNIEXPORT jclass JNICALL
923 JNU_ClassClass(JNIEnv *env)
924 {
925 static jclass cls = 0;
926 if (cls == 0) {
927 jclass c;
928 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
929 return 0;
930 c = (*env)->FindClass(env, "java/lang/Class");
931 CHECK_NULL_RETURN(c, NULL);
932 cls = (*env)->NewGlobalRef(env, c);
933 (*env)->DeleteLocalRef(env, c);
934 }
935 return cls;
936 }
937
938 JNIEXPORT jclass JNICALL
939 JNU_ClassObject(JNIEnv *env)
940 {
941 static jclass cls = 0;
942 if (cls == 0) {
943 jclass c;
944 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
945 return 0;
946 c = (*env)->FindClass(env, "java/lang/Object");
947 CHECK_NULL_RETURN(c, NULL);
948 cls = (*env)->NewGlobalRef(env, c);
949 (*env)->DeleteLocalRef(env, c);
950 }
951 return cls;
952 }
953
954 JNIEXPORT jclass JNICALL
955 JNU_ClassThrowable(JNIEnv *env)
956 {
957 static jclass cls = 0;
958 if (cls == 0) {
959 jclass c;
960 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
961 return 0;
962 c = (*env)->FindClass(env, "java/lang/Throwable");
963 CHECK_NULL_RETURN(c, NULL);
964 cls = (*env)->NewGlobalRef(env, c);
965 (*env)->DeleteLocalRef(env, c);
966 }
967 return cls;
968 }
969
970 JNIEXPORT jint JNICALL
971 JNU_CopyObjectArray(JNIEnv *env, jobjectArray dst, jobjectArray src,
972 jint count)
973 {
974 int i;
975 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
976 return -1;
977 for (i=0; i<count; i++) {
978 jstring p = (*env)->GetObjectArrayElement(env, src, i);
979 (*env)->SetObjectArrayElement(env, dst, i, p);
980 (*env)->DeleteLocalRef(env, p);
981 }
982 return 0;
983 }
984
985 JNIEXPORT void * JNICALL
986 JNU_GetEnv(JavaVM *vm, jint version)
987 {
988 void *env;
989 (*vm)->GetEnv(vm, &env, version);
990 return env;
991 }
992
993 JNIEXPORT jint JNICALL
994 JNU_IsInstanceOfByName(JNIEnv *env, jobject object, char* classname)
995 {
996 jclass cls;
997 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
998 return JNI_ERR;
999 cls = (*env)->FindClass(env, classname);
1000 if (cls != NULL) {
1001 jint result = (*env)->IsInstanceOf(env, object, cls);
1002 (*env)->DeleteLocalRef(env, cls);
1003 return result;
1004 }
1005 return JNI_ERR;
1006 }
1007
1008 JNIEXPORT jboolean JNICALL
1009 JNU_Equals(JNIEnv *env, jobject object1, jobject object2)
1010 {
1011 static jmethodID mid = NULL;
1012 if (mid == NULL) {
1013 jclass objClazz = JNU_ClassObject(env);
1014 CHECK_NULL_RETURN(objClazz, JNI_FALSE);
1015 mid = (*env)->GetMethodID(env, objClazz, "equals",
1016 "(Ljava/lang/Object;)Z");
1017 CHECK_NULL_RETURN(mid, JNI_FALSE);
1018 }
1019 return (*env)->CallBooleanMethod(env, object1, mid, object2);
1020 }
1021
1022
1023 /************************************************************************
1024 * Thread calls
1025 */
1026
1027 static jmethodID Object_waitMID;
1028 static jmethodID Object_notifyMID;
1029 static jmethodID Object_notifyAllMID;
1030
1031 JNIEXPORT void JNICALL
1032 JNU_MonitorWait(JNIEnv *env, jobject object, jlong timeout)
1033 {
1034 if (object == NULL) {
1035 JNU_ThrowNullPointerException(env, "JNU_MonitorWait argument");
1036 return;
1037 }
1038 if (Object_waitMID == NULL) {
1039 jclass cls = JNU_ClassObject(env);
1040 if (cls == NULL) {
1041 return;
1042 }
1043 Object_waitMID = (*env)->GetMethodID(env, cls, "wait", "(J)V");
1044 if (Object_waitMID == NULL) {
1045 return;
1046 }
1047 }
1048 (*env)->CallVoidMethod(env, object, Object_waitMID, timeout);
1049 }
1050
1051 JNIEXPORT void JNICALL
1052 JNU_Notify(JNIEnv *env, jobject object)
1053 {
1054 if (object == NULL) {
1055 JNU_ThrowNullPointerException(env, "JNU_Notify argument");
1056 return;
1057 }
1058 if (Object_notifyMID == NULL) {
1059 jclass cls = JNU_ClassObject(env);
1060 if (cls == NULL) {
1061 return;
1062 }
1063 Object_notifyMID = (*env)->GetMethodID(env, cls, "notify", "()V");
1064 if (Object_notifyMID == NULL) {
1065 return;
1066 }
1067 }
1068 (*env)->CallVoidMethod(env, object, Object_notifyMID);
1069 }
1070
1071 JNIEXPORT void JNICALL
1072 JNU_NotifyAll(JNIEnv *env, jobject object)
1073 {
1074 if (object == NULL) {
1075 JNU_ThrowNullPointerException(env, "JNU_NotifyAll argument");
1076 return;
1077 }
1078 if (Object_notifyAllMID == NULL) {
1079 jclass cls = JNU_ClassObject(env);
1080 if (cls == NULL) {
1081 return;
1082 }
1083 Object_notifyAllMID = (*env)->GetMethodID(env, cls,"notifyAll", "()V");
1084 if (Object_notifyAllMID == NULL) {
1085 return;
1086 }
1087 }
1088 (*env)->CallVoidMethod(env, object, Object_notifyAllMID);
1089 }
1090
1091
1092 /************************************************************************
1093 * Debugging utilities
1094 */
1095
1096 JNIEXPORT void JNICALL
1097 JNU_PrintString(JNIEnv *env, char *hdr, jstring string)
1098 {
1099 if (string == NULL) {
1100 fprintf(stderr, "%s: is NULL\n", hdr);
1101 } else {
1102 const char *stringPtr = JNU_GetStringPlatformChars(env, string, 0);
1103 if (stringPtr == 0)
1104 return;
1105 fprintf(stderr, "%s: %s\n", hdr, stringPtr);
1106 JNU_ReleaseStringPlatformChars(env, string, stringPtr);
1107 }
1108 }
1109
1110 JNIEXPORT void JNICALL
1111 JNU_PrintClass(JNIEnv *env, char* hdr, jobject object)
1112 {
1113 if (object == NULL) {
1114 fprintf(stderr, "%s: object is NULL\n", hdr);
1115 return;
1116 } else {
1117 jclass cls = (*env)->GetObjectClass(env, object);
1118 jstring clsName = JNU_ToString(env, cls);
1119 if (clsName == NULL) {
1120 JNU_PrintString(env, hdr, clsName);
1121 }
1122 (*env)->DeleteLocalRef(env, cls);
1123 (*env)->DeleteLocalRef(env, clsName);
1124 }
1125 }
1126
1127 JNIEXPORT jstring JNICALL
1128 JNU_ToString(JNIEnv *env, jobject object)
1129 {
1130 if (object == NULL) {
1131 return (*env)->NewStringUTF(env, "NULL");
1132 } else {
1133 return (jstring)JNU_CallMethodByName(env,
1134 NULL,
1135 object,
1136 "toString",
1137 "()Ljava/lang/String;").l;
1138 }
1139 }
1140
1141 JNIEXPORT jvalue JNICALL
1142 JNU_GetFieldByName(JNIEnv *env,
1143 jboolean *hasException,
1144 jobject obj,
1145 const char *name,
1146 const char *signature)
1147 {
1148 jclass cls;
1149 jfieldID fid;
1150 jvalue result;
1151
1152 result.i = 0;
1153
1154 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1155 goto done2;
1156
1157 cls = (*env)->GetObjectClass(env, obj);
1158 fid = (*env)->GetFieldID(env, cls, name, signature);
1159 if (fid == 0)
1160 goto done1;
1161
1162 switch (*signature) {
1163 case '[':
1164 case 'L':
1165 result.l = (*env)->GetObjectField(env, obj, fid);
1166 break;
1167 case 'Z':
1168 result.z = (*env)->GetBooleanField(env, obj, fid);
1169 break;
1170 case 'B':
1171 result.b = (*env)->GetByteField(env, obj, fid);
1172 break;
1173 case 'C':
1174 result.c = (*env)->GetCharField(env, obj, fid);
1175 break;
1176 case 'S':
1177 result.s = (*env)->GetShortField(env, obj, fid);
1178 break;
1179 case 'I':
1180 result.i = (*env)->GetIntField(env, obj, fid);
1181 break;
1182 case 'J':
1183 result.j = (*env)->GetLongField(env, obj, fid);
1184 break;
1185 case 'F':
1186 result.f = (*env)->GetFloatField(env, obj, fid);
1187 break;
1188 case 'D':
1189 result.d = (*env)->GetDoubleField(env, obj, fid);
1190 break;
1191
1192 default:
1193 (*env)->FatalError(env, "JNU_GetFieldByName: illegal signature");
1194 }
1195
1196 done1:
1197 (*env)->DeleteLocalRef(env, cls);
1198 done2:
1199 if (hasException) {
1200 *hasException = (*env)->ExceptionCheck(env);
1201 }
1202 return result;
1203 }
1204
1205 JNIEXPORT void JNICALL
1206 JNU_SetFieldByName(JNIEnv *env,
1207 jboolean *hasException,
1208 jobject obj,
1209 const char *name,
1210 const char *signature,
1211 ...)
1212 {
1213 jclass cls;
1214 jfieldID fid;
1215 va_list args;
1216
1217 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1218 goto done2;
1219
1220 cls = (*env)->GetObjectClass(env, obj);
1221 fid = (*env)->GetFieldID(env, cls, name, signature);
1222 if (fid == 0)
1223 goto done1;
1224
1225 va_start(args, signature);
1226 switch (*signature) {
1227 case '[':
1228 case 'L':
1229 (*env)->SetObjectField(env, obj, fid, va_arg(args, jobject));
1230 break;
1231 case 'Z':
1232 (*env)->SetBooleanField(env, obj, fid, (jboolean)va_arg(args, int));
1233 break;
1234 case 'B':
1235 (*env)->SetByteField(env, obj, fid, (jbyte)va_arg(args, int));
1236 break;
1237 case 'C':
1238 (*env)->SetCharField(env, obj, fid, (jchar)va_arg(args, int));
1239 break;
1240 case 'S':
1241 (*env)->SetShortField(env, obj, fid, (jshort)va_arg(args, int));
1242 break;
1243 case 'I':
1244 (*env)->SetIntField(env, obj, fid, va_arg(args, jint));
1245 break;
1246 case 'J':
1247 (*env)->SetLongField(env, obj, fid, va_arg(args, jlong));
1248 break;
1249 case 'F':
1250 (*env)->SetFloatField(env, obj, fid, (jfloat)va_arg(args, jdouble));
1251 break;
1252 case 'D':
1253 (*env)->SetDoubleField(env, obj, fid, va_arg(args, jdouble));
1254 break;
1255
1256 default:
1257 (*env)->FatalError(env, "JNU_SetFieldByName: illegal signature");
1258 }
1259 va_end(args);
1260
1261 done1:
1262 (*env)->DeleteLocalRef(env, cls);
1263 done2:
1264 if (hasException) {
1265 *hasException = (*env)->ExceptionCheck(env);
1266 }
1267 }
1268
1269 JNIEXPORT jvalue JNICALL
1270 JNU_GetStaticFieldByName(JNIEnv *env,
1271 jboolean *hasException,
1272 const char *classname,
1273 const char *name,
1274 const char *signature)
1275 {
1276 jclass cls;
1277 jfieldID fid;
1278 jvalue result;
1279
1280 result.i = 0;
1281
1282 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1283 goto done2;
1284
1285 cls = (*env)->FindClass(env, classname);
1286 if (cls == 0)
1287 goto done2;
1288
1289 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1290 if (fid == 0)
1291 goto done1;
1292
1293 switch (*signature) {
1294 case '[':
1295 case 'L':
1296 result.l = (*env)->GetStaticObjectField(env, cls, fid);
1297 break;
1298 case 'Z':
1299 result.z = (*env)->GetStaticBooleanField(env, cls, fid);
1300 break;
1301 case 'B':
1302 result.b = (*env)->GetStaticByteField(env, cls, fid);
1303 break;
1304 case 'C':
1305 result.c = (*env)->GetStaticCharField(env, cls, fid);
1306 break;
1307 case 'S':
1308 result.s = (*env)->GetStaticShortField(env, cls, fid);
1309 break;
1310 case 'I':
1311 result.i = (*env)->GetStaticIntField(env, cls, fid);
1312 break;
1313 case 'J':
1314 result.j = (*env)->GetStaticLongField(env, cls, fid);
1315 break;
1316 case 'F':
1317 result.f = (*env)->GetStaticFloatField(env, cls, fid);
1318 break;
1319 case 'D':
1320 result.d = (*env)->GetStaticDoubleField(env, cls, fid);
1321 break;
1322
1323 default:
1324 (*env)->FatalError(env, "JNU_GetStaticFieldByName: illegal signature");
1325 }
1326
1327 done1:
1328 (*env)->DeleteLocalRef(env, cls);
1329 done2:
1330 if (hasException) {
1331 *hasException = (*env)->ExceptionCheck(env);
1332 }
1333 return result;
1334 }
1335
1336 JNIEXPORT void JNICALL
1337 JNU_SetStaticFieldByName(JNIEnv *env,
1338 jboolean *hasException,
1339 const char *classname,
1340 const char *name,
1341 const char *signature,
1342 ...)
1343 {
1344 jclass cls;
1345 jfieldID fid;
1346 va_list args;
1347
1348 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1349 goto done2;
1350
1351 cls = (*env)->FindClass(env, classname);
1352 if (cls == 0)
1353 goto done2;
1354
1355 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1356 if (fid == 0)
1357 goto done1;
1358
1359 va_start(args, signature);
1360 switch (*signature) {
1361 case '[':
1362 case 'L':
1363 (*env)->SetStaticObjectField(env, cls, fid, va_arg(args, jobject));
1364 break;
1365 case 'Z':
1366 (*env)->SetStaticBooleanField(env, cls, fid, (jboolean)va_arg(args, int));
1367 break;
1368 case 'B':
1369 (*env)->SetStaticByteField(env, cls, fid, (jbyte)va_arg(args, int));
1370 break;
1371 case 'C':
1372 (*env)->SetStaticCharField(env, cls, fid, (jchar)va_arg(args, int));
1373 break;
1374 case 'S':
1375 (*env)->SetStaticShortField(env, cls, fid, (jshort)va_arg(args, int));
1376 break;
1377 case 'I':
1378 (*env)->SetStaticIntField(env, cls, fid, va_arg(args, jint));
1379 break;
1380 case 'J':
1381 (*env)->SetStaticLongField(env, cls, fid, va_arg(args, jlong));
1382 break;
1383 case 'F':
1384 (*env)->SetStaticFloatField(env, cls, fid, (jfloat)va_arg(args, jdouble));
1385 break;
1386 case 'D':
1387 (*env)->SetStaticDoubleField(env, cls, fid, va_arg(args, jdouble));
1388 break;
1389
1390 default:
1391 (*env)->FatalError(env, "JNU_SetStaticFieldByName: illegal signature");
1392 }
1393 va_end(args);
1394
1395 done1:
1396 (*env)->DeleteLocalRef(env, cls);
1397 done2:
1398 if (hasException) {
1399 *hasException = (*env)->ExceptionCheck(env);
1400 }
1401 }