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 charset ISO_8559_1 */
446 static jstring
447 newSizedString8859_1(JNIEnv *env, const char *str, const int len)
448 {
449 jchar buf[512];
450 jchar *str1;
451 jstring result;
452 int i;
453
454 if (len > 512) {
455 str1 = (jchar *)malloc(len * sizeof(jchar));
456 if (str1 == 0) {
457 JNU_ThrowOutOfMemoryError(env, 0);
458 return 0;
459 }
460 } else
461 str1 = buf;
462
463 for (i=0;i<len;i++)
464 str1[i] = (unsigned char)str[i];
465 result = (*env)->NewString(env, str1, len);
466 if (str1 != buf)
467 free(str1);
468 return result;
469 }
470
471 static jstring
472 newString8859_1(JNIEnv *env, const char *str)
473 {
474 int len = (int)strlen(str);
475 return newSizedString8859_1(env, str, len);
476 }
477
478 static const char*
479 getString8859_1Chars(JNIEnv *env, jstring jstr)
480 {
481 int i;
482 char *result;
483 jint len = (*env)->GetStringLength(env, jstr);
484 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
485 if (str == 0) {
486 return 0;
487 }
488
489 result = MALLOC_MIN4(len);
490 if (result == 0) {
491 (*env)->ReleaseStringCritical(env, jstr, str);
492 JNU_ThrowOutOfMemoryError(env, 0);
493 return 0;
494 }
495
496 for (i=0; i<len; i++) {
497 jchar unicode = str[i];
498 if (unicode <= 0x00ff)
499 result[i] = (char)unicode;
500 else
501 result[i] = '?';
502 }
503
504 result[len] = 0;
505 (*env)->ReleaseStringCritical(env, jstr, str);
506 return result;
507 }
508
509
510 /* Optimized for charset ISO646-US (us-ascii) */
511 static jstring
512 newString646_US(JNIEnv *env, const char *str)
513 {
514 int len = (int)strlen(str);
515 jchar buf[512];
516 jchar *str1;
517 jstring result;
518 int i;
519
520 if (len > 512) {
521 str1 = (jchar *)malloc(len * sizeof(jchar));
522 if (str1 == 0) {
523 JNU_ThrowOutOfMemoryError(env, 0);
524 return 0;
525 }
526 } else
527 str1 = buf;
528
529 for (i=0; i<len; i++) {
530 unsigned char c = (unsigned char)str[i];
531 if (c <= 0x7f)
532 str1[i] = c;
533 else
534 str1[i] = '?';
535 }
536
537 result = (*env)->NewString(env, str1, len);
538 if (str1 != buf)
539 free(str1);
540 return result;
541 }
542
543 static const char*
544 getString646_USChars(JNIEnv *env, jstring jstr)
545 {
546 int i;
547 char *result;
548 jint len = (*env)->GetStringLength(env, jstr);
549 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
550 if (str == 0) {
551 return 0;
552 }
553
554 result = MALLOC_MIN4(len);
555 if (result == 0) {
556 (*env)->ReleaseStringCritical(env, jstr, str);
557 JNU_ThrowOutOfMemoryError(env, 0);
558 return 0;
559 }
560
561 for (i=0; i<len; i++) {
562 jchar unicode = str[i];
563 if (unicode <= 0x007f )
564 result[i] = (char)unicode;
565 else
566 result[i] = '?';
567 }
568
569 result[len] = 0;
570 (*env)->ReleaseStringCritical(env, jstr, str);
571 return result;
572 }
573
574 /* enumeration of c1 row from Cp1252 */
575 static int cp1252c1chars[32] = {
576 0x20AC,0xFFFD,0x201A,0x0192,0x201E,0x2026,0x2020,0x2021,
577 0x02C6,0x2030,0x0160,0x2039,0x0152,0xFFFD,0x017D,0xFFFD,
578 0xFFFD,0x2018,0x2019,0x201C,0x201D,0x2022,0x2013,0x2014,
579 0x02Dc,0x2122,0x0161,0x203A,0x0153,0xFFFD,0x017E,0x0178
580 };
581
582 /* Optimized for charset Cp1252 */
583 static jstring
584 newStringCp1252(JNIEnv *env, const char *str)
585 {
586 int len = (int) strlen(str);
587 jchar buf[512];
588 jchar *str1;
589 jstring result;
590 int i;
591 if (len > 512) {
592 str1 = (jchar *)malloc(len * sizeof(jchar));
593 if (str1 == 0) {
594 JNU_ThrowOutOfMemoryError(env, 0);
595 return 0;
596 }
597 } else
598 str1 = buf;
599
600 for (i=0; i<len; i++) {
601 unsigned char c = (unsigned char)str[i];
602 if ((c >= 0x80) && (c <= 0x9f))
603 str1[i] = cp1252c1chars[c-128];
604 else
605 str1[i] = c;
606 }
607
608 result = (*env)->NewString(env, str1, len);
609 if (str1 != buf)
610 free(str1);
611 return result;
612 }
613
614 static const char*
615 getStringCp1252Chars(JNIEnv *env, jstring jstr)
616 {
617 int i;
618 char *result;
619 jint len = (*env)->GetStringLength(env, jstr);
620 const jchar *str = (*env)->GetStringCritical(env, jstr, 0);
621 if (str == 0) {
622 return 0;
623 }
624
625 result = MALLOC_MIN4(len);
626 if (result == 0) {
627 (*env)->ReleaseStringCritical(env, jstr, str);
628 JNU_ThrowOutOfMemoryError(env, 0);
629 return 0;
630 }
631
632 for (i=0; i<len; i++) {
633 jchar c = str[i];
634 if (c < 256)
635 result[i] = (char)c;
636 else switch(c) {
637 case 0x20AC: result[i] = (char)0x80; break;
638 case 0x201A: result[i] = (char)0x82; break;
639 case 0x0192: result[i] = (char)0x83; break;
640 case 0x201E: result[i] = (char)0x84; break;
641 case 0x2026: result[i] = (char)0x85; break;
642 case 0x2020: result[i] = (char)0x86; break;
643 case 0x2021: result[i] = (char)0x87; break;
644 case 0x02C6: result[i] = (char)0x88; break;
645 case 0x2030: result[i] = (char)0x89; break;
646 case 0x0160: result[i] = (char)0x8A; break;
647 case 0x2039: result[i] = (char)0x8B; break;
648 case 0x0152: result[i] = (char)0x8C; break;
649 case 0x017D: result[i] = (char)0x8E; break;
650 case 0x2018: result[i] = (char)0x91; break;
651 case 0x2019: result[i] = (char)0x92; break;
652 case 0x201C: result[i] = (char)0x93; break;
653 case 0x201D: result[i] = (char)0x94; break;
654 case 0x2022: result[i] = (char)0x95; break;
655 case 0x2013: result[i] = (char)0x96; break;
656 case 0x2014: result[i] = (char)0x97; break;
657 case 0x02DC: result[i] = (char)0x98; break;
658 case 0x2122: result[i] = (char)0x99; break;
659 case 0x0161: result[i] = (char)0x9A; break;
660 case 0x203A: result[i] = (char)0x9B; break;
661 case 0x0153: result[i] = (char)0x9C; break;
662 case 0x017E: result[i] = (char)0x9E; break;
663 case 0x0178: result[i] = (char)0x9F; break;
664 default: result[i] = '?'; break;
665 }
666 }
667
668 result[len] = 0;
669 (*env)->ReleaseStringCritical(env, jstr, str);
670 return result;
671 }
672
673 static int fastEncoding = NO_ENCODING_YET;
674 static jstring jnuEncoding = NULL;
675
676 /* Cached method IDs */
677 static jmethodID String_init_ID; /* String(byte[], enc) */
678 static jmethodID String_getBytes_ID; /* String.getBytes(enc) */
679
680 /* Cached field IDs */
681 static jfieldID String_coder_ID; /* String.coder */
682 static jfieldID String_value_ID; /* String.value */
683
684 static jboolean isJNUEncodingSupported = JNI_FALSE;
685 static jboolean jnuEncodingSupported(JNIEnv *env) {
686 jboolean exe;
687 if (isJNUEncodingSupported == JNI_TRUE) {
688 return JNI_TRUE;
689 }
690 isJNUEncodingSupported = (jboolean) JNU_CallStaticMethodByName (
691 env, &exe,
692 "java/nio/charset/Charset",
693 "isSupported",
694 "(Ljava/lang/String;)Z",
695 jnuEncoding).z;
696 return isJNUEncodingSupported;
697 }
698
699 /* Create a new string by converting str to a heap-allocated byte array and
700 * calling the appropriate String constructor.
701 */
702 static jstring
703 newSizedStringJava(JNIEnv *env, const char *str, const int len)
704 {
705 jstring result = NULL;
706 jbyteArray bytes = 0;
707
708 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
709 return NULL;
710
711 bytes = (*env)->NewByteArray(env, len);
712 if (bytes != NULL) {
713 jclass strClazz = JNU_ClassString(env);
714 CHECK_NULL_RETURN(strClazz, 0);
715 (*env)->SetByteArrayRegion(env, bytes, 0, len, (jbyte *)str);
716 if (jnuEncodingSupported(env)) {
717 result = (*env)->NewObject(env, strClazz,
718 String_init_ID, bytes, jnuEncoding);
719 } else {
720 /*If the encoding specified in sun.jnu.encoding is not endorsed
721 by "Charset.isSupported" we have to fall back to use String(byte[])
722 explicitly here without specifying the encoding name, in which the
723 StringCoding class will pickup the iso-8859-1 as the fallback
724 converter for us.
725 */
726 jmethodID mid = (*env)->GetMethodID(env, strClazz,
727 "<init>", "([B)V");
728 if (mid != NULL) {
729 result = (*env)->NewObject(env, strClazz, mid, bytes);
730 }
731 }
732 (*env)->DeleteLocalRef(env, bytes);
733 return result;
734 }
735 return NULL;
736 }
737
738 static jstring
739 newStringJava(JNIEnv *env, const char *str)
740 {
741 int len = (int)strlen(str);
742 return newSizedStringJava(env, str, len);
743 }
744
745 /* Optimized for charset UTF-8 */
746 static jstring
747 newStringUTF8(JNIEnv *env, const char *str)
748 {
749 int len;
750 const unsigned char *p;
751 unsigned char asciiCheck;
752 for (asciiCheck = 0, p = (const unsigned char*)str; *p != '\0'; p++) {
753 asciiCheck |= *p;
754 }
755 len = (int)((const char*)p - str);
756
757 if (asciiCheck < 0x80) {
758 // ascii fast-path
759 return newSizedString8859_1(env, str, len);
760 }
761
762 return newSizedStringJava(env, str, len);
763 }
764
765 /* Initialize the fast encoding. If the "sun.jnu.encoding" property
766 * has not yet been set, we leave fastEncoding == NO_ENCODING_YET.
767 */
768 void
769 initializeEncoding(JNIEnv *env)
770 {
771 jstring propname = 0;
772 jstring enc = 0;
773 jclass strClazz = NULL;
774
775 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
776 return;
777
778 strClazz = JNU_ClassString(env);
779 CHECK_NULL(strClazz);
780
781 propname = (*env)->NewStringUTF(env, "sun.jnu.encoding");
782 if (propname) {
783 jboolean exc;
784 enc = JNU_CallStaticMethodByName
785 (env,
786 &exc,
787 "java/lang/System",
788 "getProperty",
789 "(Ljava/lang/String;)Ljava/lang/String;",
790 propname).l;
791 if (!exc) {
792 if (enc) {
793 const char* encname = (*env)->GetStringUTFChars(env, enc, 0);
794 if (encname) {
795 /*
796 * On Solaris with nl_langinfo() called in GetJavaProperties():
797 *
798 * locale undefined -> NULL -> hardcoded default
799 * "C" locale -> "" -> hardcoded default (on 2.6)
800 * "C" locale -> "ISO646-US" (on Sol 7/8)
801 * "en_US" locale -> "ISO8859-1"
802 * "en_GB" locale -> "ISO8859-1" (on Sol 7/8)
803 * "en_UK" locale -> "ISO8859-1" (on 2.6)
804 */
805 if ((strcmp(encname, "8859_1") == 0) ||
806 (strcmp(encname, "ISO8859-1") == 0) ||
807 (strcmp(encname, "ISO8859_1") == 0) ||
808 (strcmp(encname, "ISO-8859-1") == 0)) {
809 fastEncoding = FAST_8859_1;
810 } else if (strcmp(encname, "UTF-8") == 0) {
811 fastEncoding = FAST_UTF_8;
812 jnuEncoding = (jstring)(*env)->NewGlobalRef(env, enc);
813 } else if (strcmp(encname, "ISO646-US") == 0) {
814 fastEncoding = FAST_646_US;
815 } else if (strcmp(encname, "Cp1252") == 0 ||
816 /* This is a temporary fix until we move */
817 /* to wide character versions of all Windows */
818 /* calls. */
819 strcmp(encname, "utf-16le") == 0) {
820 fastEncoding = FAST_CP1252;
821 } else {
822 fastEncoding = NO_FAST_ENCODING;
823 jnuEncoding = (jstring)(*env)->NewGlobalRef(env, enc);
824 }
825 (*env)->ReleaseStringUTFChars(env, enc, encname);
826 }
827 }
828 } else {
829 (*env)->ExceptionClear(env);
830 }
831 } else {
832 (*env)->ExceptionClear(env);
833 }
834 (*env)->DeleteLocalRef(env, propname);
835 (*env)->DeleteLocalRef(env, enc);
836
837 /* Initialize method-id cache */
838 String_getBytes_ID = (*env)->GetMethodID(env, strClazz,
839 "getBytes", "(Ljava/lang/String;)[B");
840 CHECK_NULL(String_getBytes_ID);
841 String_init_ID = (*env)->GetMethodID(env, strClazz,
842 "<init>", "([BLjava/lang/String;)V");
843 String_coder_ID = (*env)->GetFieldID(env, strClazz, "coder", "B");
844 String_value_ID = (*env)->GetFieldID(env, strClazz, "value", "[B");
845 }
846
847 JNIEXPORT jstring
848 NewStringPlatform(JNIEnv *env, const char *str)
849 {
850 return JNU_NewStringPlatform(env, str);
851 }
852
853 JNIEXPORT jstring JNICALL
854 JNU_NewStringPlatform(JNIEnv *env, const char *str)
855 {
856 if (fastEncoding == NO_ENCODING_YET) {
857 initializeEncoding(env);
858 JNU_CHECK_EXCEPTION_RETURN(env, NULL);
859 }
860
861 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
862 return newString8859_1(env, str);
863 if (fastEncoding == FAST_646_US)
864 return newString646_US(env, str);
865 if (fastEncoding == FAST_CP1252)
866 return newStringCp1252(env, str);
867 if (fastEncoding == FAST_UTF_8)
868 return newStringUTF8(env, str);
869 return newStringJava(env, str);
870 }
871
872 JNIEXPORT const char *
873 GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
874 {
875 return JNU_GetStringPlatformChars(env, jstr, isCopy);
876 }
877
878 static const char* getStringBytes(JNIEnv *env, jstring jstr) {
879 char *result = NULL;
880 jbyteArray hab = 0;
881
882 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
883 return 0;
884
885 if (jnuEncodingSupported(env)) {
886 hab = (*env)->CallObjectMethod(env, jstr, String_getBytes_ID, jnuEncoding);
887 } else {
888 jmethodID mid;
889 jclass strClazz = JNU_ClassString(env);
890 CHECK_NULL_RETURN(strClazz, 0);
891 mid = (*env)->GetMethodID(env, strClazz,
892 "getBytes", "()[B");
893 if (mid != NULL) {
894 hab = (*env)->CallObjectMethod(env, jstr, mid);
895 }
896 }
897
898 if (!(*env)->ExceptionCheck(env)) {
899 jint len = (*env)->GetArrayLength(env, hab);
900 result = MALLOC_MIN4(len);
901 if (result == 0) {
902 JNU_ThrowOutOfMemoryError(env, 0);
903 (*env)->DeleteLocalRef(env, hab);
904 return 0;
905 }
906 (*env)->GetByteArrayRegion(env, hab, 0, len, (jbyte *)result);
907 result[len] = 0; /* NULL-terminate */
908 }
909
910 (*env)->DeleteLocalRef(env, hab);
911 return result;
912 }
913
914 static const char*
915 getStringUTF8(JNIEnv *env, jstring jstr)
916 {
917 int i;
918 char *result;
919 jarray value;
920 jint len;
921 const jbyte *str;
922 jint rlen;
923 int ri;
924 jbyte coder = (*env)->GetByteField(env, jstr, String_coder_ID);
925 if (coder != LATIN1) {
926 return getStringBytes(env, jstr);
927 }
928 value = (jarray)(*env)->GetObjectField(env, jstr, String_value_ID);
929 len = (*env)->GetArrayLength(env, value);
930 str = (jbyte*)(*env)->GetPrimitiveArrayCritical(env, value, NULL);
931
932 if (str == NULL) {
933 return NULL;
934 }
935
936 rlen = len;
937 // we need two bytes for each latin-1 char above 127 (negative jbytes)
938 for (i = 0; i < len; i++) {
939 if (str[i] < 0) {
940 rlen++;
941 }
942 }
943
944 result = MALLOC_MIN4(rlen);
945 if (result == NULL) {
946 (*env)->ReleasePrimitiveArrayCritical(env, jstr, (void *)str, 0);
947 JNU_ThrowOutOfMemoryError(env, 0);
948 return NULL;
949 }
950
951 for (ri = 0, i = 0; i < len; i++) {
952 jbyte c = str[i];
953 if (c < 0) {
954 result[ri++] = (char)(0xc0 | ((c & 0xff) >> 6));
955 result[ri++] = (char)(0x80 | (c & 0x3f));
956 } else {
957 result[ri++] = c;
958 }
959 }
960 result[rlen] = '\0';
961 (*env)->ReleasePrimitiveArrayCritical(env, jstr, (void *)str, 0);
962 return result;
963 }
964
965 JNIEXPORT const char * JNICALL
966 JNU_GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
967 {
968
969 if (isCopy)
970 *isCopy = JNI_TRUE;
971
972 if (fastEncoding == NO_ENCODING_YET) {
973 initializeEncoding(env);
974 JNU_CHECK_EXCEPTION_RETURN(env, 0);
975 }
976
977 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
978 return getString8859_1Chars(env, jstr);
979 if (fastEncoding == FAST_646_US)
980 return getString646_USChars(env, jstr);
981 if (fastEncoding == FAST_CP1252)
982 return getStringCp1252Chars(env, jstr);
983 if (fastEncoding == FAST_UTF_8)
984 return getStringUTF8(env, jstr);
985 else
986 return getStringBytes(env, jstr);
987 }
988 JNIEXPORT void JNICALL
989 JNU_ReleaseStringPlatformChars(JNIEnv *env, jstring jstr, const char *str)
990 {
991 free((void *)str);
992 }
993
994 /*
995 * Export the platform dependent path canonicalization so that
996 * VM can find it when loading system classes.
997 * This function is also used by the instrumentation agent.
998 */
999 extern int canonicalize(char *path, const char *out, int len);
1000
1001 JNIEXPORT int
1002 Canonicalize(JNIEnv *unused, char *orig, char *out, int len)
1003 {
1004 /* canonicalize an already natived path */
1005 return canonicalize(orig, out, len);
1006 }
1007
1008 JNIEXPORT jclass JNICALL
1009 JNU_ClassString(JNIEnv *env)
1010 {
1011 static jclass cls = 0;
1012 if (cls == 0) {
1013 jclass c;
1014 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
1015 return 0;
1016 c = (*env)->FindClass(env, "java/lang/String");
1017 CHECK_NULL_RETURN(c, NULL);
1018 cls = (*env)->NewGlobalRef(env, c);
1019 (*env)->DeleteLocalRef(env, c);
1020 }
1021 return cls;
1022 }
1023
1024 JNIEXPORT jclass JNICALL
1025 JNU_ClassClass(JNIEnv *env)
1026 {
1027 static jclass cls = 0;
1028 if (cls == 0) {
1029 jclass c;
1030 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
1031 return 0;
1032 c = (*env)->FindClass(env, "java/lang/Class");
1033 CHECK_NULL_RETURN(c, NULL);
1034 cls = (*env)->NewGlobalRef(env, c);
1035 (*env)->DeleteLocalRef(env, c);
1036 }
1037 return cls;
1038 }
1039
1040 JNIEXPORT jclass JNICALL
1041 JNU_ClassObject(JNIEnv *env)
1042 {
1043 static jclass cls = 0;
1044 if (cls == 0) {
1045 jclass c;
1046 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
1047 return 0;
1048 c = (*env)->FindClass(env, "java/lang/Object");
1049 CHECK_NULL_RETURN(c, NULL);
1050 cls = (*env)->NewGlobalRef(env, c);
1051 (*env)->DeleteLocalRef(env, c);
1052 }
1053 return cls;
1054 }
1055
1056 JNIEXPORT jclass JNICALL
1057 JNU_ClassThrowable(JNIEnv *env)
1058 {
1059 static jclass cls = 0;
1060 if (cls == 0) {
1061 jclass c;
1062 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
1063 return 0;
1064 c = (*env)->FindClass(env, "java/lang/Throwable");
1065 CHECK_NULL_RETURN(c, NULL);
1066 cls = (*env)->NewGlobalRef(env, c);
1067 (*env)->DeleteLocalRef(env, c);
1068 }
1069 return cls;
1070 }
1071
1072 JNIEXPORT jint JNICALL
1073 JNU_CopyObjectArray(JNIEnv *env, jobjectArray dst, jobjectArray src,
1074 jint count)
1075 {
1076 int i;
1077 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
1078 return -1;
1079 for (i=0; i<count; i++) {
1080 jstring p = (*env)->GetObjectArrayElement(env, src, i);
1081 (*env)->SetObjectArrayElement(env, dst, i, p);
1082 (*env)->DeleteLocalRef(env, p);
1083 }
1084 return 0;
1085 }
1086
1087 JNIEXPORT void * JNICALL
1088 JNU_GetEnv(JavaVM *vm, jint version)
1089 {
1090 void *env;
1091 (*vm)->GetEnv(vm, &env, version);
1092 return env;
1093 }
1094
1095 JNIEXPORT jint JNICALL
1096 JNU_IsInstanceOfByName(JNIEnv *env, jobject object, char* classname)
1097 {
1098 jclass cls;
1099 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
1100 return JNI_ERR;
1101 cls = (*env)->FindClass(env, classname);
1102 if (cls != NULL) {
1103 jint result = (*env)->IsInstanceOf(env, object, cls);
1104 (*env)->DeleteLocalRef(env, cls);
1105 return result;
1106 }
1107 return JNI_ERR;
1108 }
1109
1110 JNIEXPORT jboolean JNICALL
1111 JNU_Equals(JNIEnv *env, jobject object1, jobject object2)
1112 {
1113 static jmethodID mid = NULL;
1114 if (mid == NULL) {
1115 jclass objClazz = JNU_ClassObject(env);
1116 CHECK_NULL_RETURN(objClazz, JNI_FALSE);
1117 mid = (*env)->GetMethodID(env, objClazz, "equals",
1118 "(Ljava/lang/Object;)Z");
1119 CHECK_NULL_RETURN(mid, JNI_FALSE);
1120 }
1121 return (*env)->CallBooleanMethod(env, object1, mid, object2);
1122 }
1123
1124
1125 /************************************************************************
1126 * Thread calls
1127 */
1128
1129 static jmethodID Object_waitMID;
1130 static jmethodID Object_notifyMID;
1131 static jmethodID Object_notifyAllMID;
1132
1133 JNIEXPORT void JNICALL
1134 JNU_MonitorWait(JNIEnv *env, jobject object, jlong timeout)
1135 {
1136 if (object == NULL) {
1137 JNU_ThrowNullPointerException(env, "JNU_MonitorWait argument");
1138 return;
1139 }
1140 if (Object_waitMID == NULL) {
1141 jclass cls = JNU_ClassObject(env);
1142 if (cls == NULL) {
1143 return;
1144 }
1145 Object_waitMID = (*env)->GetMethodID(env, cls, "wait", "(J)V");
1146 if (Object_waitMID == NULL) {
1147 return;
1148 }
1149 }
1150 (*env)->CallVoidMethod(env, object, Object_waitMID, timeout);
1151 }
1152
1153 JNIEXPORT void JNICALL
1154 JNU_Notify(JNIEnv *env, jobject object)
1155 {
1156 if (object == NULL) {
1157 JNU_ThrowNullPointerException(env, "JNU_Notify argument");
1158 return;
1159 }
1160 if (Object_notifyMID == NULL) {
1161 jclass cls = JNU_ClassObject(env);
1162 if (cls == NULL) {
1163 return;
1164 }
1165 Object_notifyMID = (*env)->GetMethodID(env, cls, "notify", "()V");
1166 if (Object_notifyMID == NULL) {
1167 return;
1168 }
1169 }
1170 (*env)->CallVoidMethod(env, object, Object_notifyMID);
1171 }
1172
1173 JNIEXPORT void JNICALL
1174 JNU_NotifyAll(JNIEnv *env, jobject object)
1175 {
1176 if (object == NULL) {
1177 JNU_ThrowNullPointerException(env, "JNU_NotifyAll argument");
1178 return;
1179 }
1180 if (Object_notifyAllMID == NULL) {
1181 jclass cls = JNU_ClassObject(env);
1182 if (cls == NULL) {
1183 return;
1184 }
1185 Object_notifyAllMID = (*env)->GetMethodID(env, cls,"notifyAll", "()V");
1186 if (Object_notifyAllMID == NULL) {
1187 return;
1188 }
1189 }
1190 (*env)->CallVoidMethod(env, object, Object_notifyAllMID);
1191 }
1192
1193
1194 /************************************************************************
1195 * Debugging utilities
1196 */
1197
1198 JNIEXPORT void JNICALL
1199 JNU_PrintString(JNIEnv *env, char *hdr, jstring string)
1200 {
1201 if (string == NULL) {
1202 fprintf(stderr, "%s: is NULL\n", hdr);
1203 } else {
1204 const char *stringPtr = JNU_GetStringPlatformChars(env, string, 0);
1205 if (stringPtr == 0)
1206 return;
1207 fprintf(stderr, "%s: %s\n", hdr, stringPtr);
1208 JNU_ReleaseStringPlatformChars(env, string, stringPtr);
1209 }
1210 }
1211
1212 JNIEXPORT void JNICALL
1213 JNU_PrintClass(JNIEnv *env, char* hdr, jobject object)
1214 {
1215 if (object == NULL) {
1216 fprintf(stderr, "%s: object is NULL\n", hdr);
1217 return;
1218 } else {
1219 jclass cls = (*env)->GetObjectClass(env, object);
1220 jstring clsName = JNU_ToString(env, cls);
1221 if (clsName == NULL) {
1222 JNU_PrintString(env, hdr, clsName);
1223 }
1224 (*env)->DeleteLocalRef(env, cls);
1225 (*env)->DeleteLocalRef(env, clsName);
1226 }
1227 }
1228
1229 JNIEXPORT jstring JNICALL
1230 JNU_ToString(JNIEnv *env, jobject object)
1231 {
1232 if (object == NULL) {
1233 return (*env)->NewStringUTF(env, "NULL");
1234 } else {
1235 return (jstring)JNU_CallMethodByName(env,
1236 NULL,
1237 object,
1238 "toString",
1239 "()Ljava/lang/String;").l;
1240 }
1241 }
1242
1243 JNIEXPORT jvalue JNICALL
1244 JNU_GetFieldByName(JNIEnv *env,
1245 jboolean *hasException,
1246 jobject obj,
1247 const char *name,
1248 const char *signature)
1249 {
1250 jclass cls;
1251 jfieldID fid;
1252 jvalue result;
1253
1254 result.i = 0;
1255
1256 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1257 goto done2;
1258
1259 cls = (*env)->GetObjectClass(env, obj);
1260 fid = (*env)->GetFieldID(env, cls, name, signature);
1261 if (fid == 0)
1262 goto done1;
1263
1264 switch (*signature) {
1265 case '[':
1266 case 'L':
1267 result.l = (*env)->GetObjectField(env, obj, fid);
1268 break;
1269 case 'Z':
1270 result.z = (*env)->GetBooleanField(env, obj, fid);
1271 break;
1272 case 'B':
1273 result.b = (*env)->GetByteField(env, obj, fid);
1274 break;
1275 case 'C':
1276 result.c = (*env)->GetCharField(env, obj, fid);
1277 break;
1278 case 'S':
1279 result.s = (*env)->GetShortField(env, obj, fid);
1280 break;
1281 case 'I':
1282 result.i = (*env)->GetIntField(env, obj, fid);
1283 break;
1284 case 'J':
1285 result.j = (*env)->GetLongField(env, obj, fid);
1286 break;
1287 case 'F':
1288 result.f = (*env)->GetFloatField(env, obj, fid);
1289 break;
1290 case 'D':
1291 result.d = (*env)->GetDoubleField(env, obj, fid);
1292 break;
1293
1294 default:
1295 (*env)->FatalError(env, "JNU_GetFieldByName: illegal signature");
1296 }
1297
1298 done1:
1299 (*env)->DeleteLocalRef(env, cls);
1300 done2:
1301 if (hasException) {
1302 *hasException = (*env)->ExceptionCheck(env);
1303 }
1304 return result;
1305 }
1306
1307 JNIEXPORT void JNICALL
1308 JNU_SetFieldByName(JNIEnv *env,
1309 jboolean *hasException,
1310 jobject obj,
1311 const char *name,
1312 const char *signature,
1313 ...)
1314 {
1315 jclass cls;
1316 jfieldID fid;
1317 va_list args;
1318
1319 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1320 goto done2;
1321
1322 cls = (*env)->GetObjectClass(env, obj);
1323 fid = (*env)->GetFieldID(env, cls, name, signature);
1324 if (fid == 0)
1325 goto done1;
1326
1327 va_start(args, signature);
1328 switch (*signature) {
1329 case '[':
1330 case 'L':
1331 (*env)->SetObjectField(env, obj, fid, va_arg(args, jobject));
1332 break;
1333 case 'Z':
1334 (*env)->SetBooleanField(env, obj, fid, (jboolean)va_arg(args, int));
1335 break;
1336 case 'B':
1337 (*env)->SetByteField(env, obj, fid, (jbyte)va_arg(args, int));
1338 break;
1339 case 'C':
1340 (*env)->SetCharField(env, obj, fid, (jchar)va_arg(args, int));
1341 break;
1342 case 'S':
1343 (*env)->SetShortField(env, obj, fid, (jshort)va_arg(args, int));
1344 break;
1345 case 'I':
1346 (*env)->SetIntField(env, obj, fid, va_arg(args, jint));
1347 break;
1348 case 'J':
1349 (*env)->SetLongField(env, obj, fid, va_arg(args, jlong));
1350 break;
1351 case 'F':
1352 (*env)->SetFloatField(env, obj, fid, (jfloat)va_arg(args, jdouble));
1353 break;
1354 case 'D':
1355 (*env)->SetDoubleField(env, obj, fid, va_arg(args, jdouble));
1356 break;
1357
1358 default:
1359 (*env)->FatalError(env, "JNU_SetFieldByName: illegal signature");
1360 }
1361 va_end(args);
1362
1363 done1:
1364 (*env)->DeleteLocalRef(env, cls);
1365 done2:
1366 if (hasException) {
1367 *hasException = (*env)->ExceptionCheck(env);
1368 }
1369 }
1370
1371 JNIEXPORT jvalue JNICALL
1372 JNU_GetStaticFieldByName(JNIEnv *env,
1373 jboolean *hasException,
1374 const char *classname,
1375 const char *name,
1376 const char *signature)
1377 {
1378 jclass cls;
1379 jfieldID fid;
1380 jvalue result;
1381
1382 result.i = 0;
1383
1384 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1385 goto done2;
1386
1387 cls = (*env)->FindClass(env, classname);
1388 if (cls == 0)
1389 goto done2;
1390
1391 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1392 if (fid == 0)
1393 goto done1;
1394
1395 switch (*signature) {
1396 case '[':
1397 case 'L':
1398 result.l = (*env)->GetStaticObjectField(env, cls, fid);
1399 break;
1400 case 'Z':
1401 result.z = (*env)->GetStaticBooleanField(env, cls, fid);
1402 break;
1403 case 'B':
1404 result.b = (*env)->GetStaticByteField(env, cls, fid);
1405 break;
1406 case 'C':
1407 result.c = (*env)->GetStaticCharField(env, cls, fid);
1408 break;
1409 case 'S':
1410 result.s = (*env)->GetStaticShortField(env, cls, fid);
1411 break;
1412 case 'I':
1413 result.i = (*env)->GetStaticIntField(env, cls, fid);
1414 break;
1415 case 'J':
1416 result.j = (*env)->GetStaticLongField(env, cls, fid);
1417 break;
1418 case 'F':
1419 result.f = (*env)->GetStaticFloatField(env, cls, fid);
1420 break;
1421 case 'D':
1422 result.d = (*env)->GetStaticDoubleField(env, cls, fid);
1423 break;
1424
1425 default:
1426 (*env)->FatalError(env, "JNU_GetStaticFieldByName: illegal signature");
1427 }
1428
1429 done1:
1430 (*env)->DeleteLocalRef(env, cls);
1431 done2:
1432 if (hasException) {
1433 *hasException = (*env)->ExceptionCheck(env);
1434 }
1435 return result;
1436 }
1437
1438 JNIEXPORT void JNICALL
1439 JNU_SetStaticFieldByName(JNIEnv *env,
1440 jboolean *hasException,
1441 const char *classname,
1442 const char *name,
1443 const char *signature,
1444 ...)
1445 {
1446 jclass cls;
1447 jfieldID fid;
1448 va_list args;
1449
1450 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1451 goto done2;
1452
1453 cls = (*env)->FindClass(env, classname);
1454 if (cls == 0)
1455 goto done2;
1456
1457 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1458 if (fid == 0)
1459 goto done1;
1460
1461 va_start(args, signature);
1462 switch (*signature) {
1463 case '[':
1464 case 'L':
1465 (*env)->SetStaticObjectField(env, cls, fid, va_arg(args, jobject));
1466 break;
1467 case 'Z':
1468 (*env)->SetStaticBooleanField(env, cls, fid, (jboolean)va_arg(args, int));
1469 break;
1470 case 'B':
1471 (*env)->SetStaticByteField(env, cls, fid, (jbyte)va_arg(args, int));
1472 break;
1473 case 'C':
1474 (*env)->SetStaticCharField(env, cls, fid, (jchar)va_arg(args, int));
1475 break;
1476 case 'S':
1477 (*env)->SetStaticShortField(env, cls, fid, (jshort)va_arg(args, int));
1478 break;
1479 case 'I':
1480 (*env)->SetStaticIntField(env, cls, fid, va_arg(args, jint));
1481 break;
1482 case 'J':
1483 (*env)->SetStaticLongField(env, cls, fid, va_arg(args, jlong));
1484 break;
1485 case 'F':
1486 (*env)->SetStaticFloatField(env, cls, fid, (jfloat)va_arg(args, jdouble));
1487 break;
1488 case 'D':
1489 (*env)->SetStaticDoubleField(env, cls, fid, va_arg(args, jdouble));
1490 break;
1491
1492 default:
1493 (*env)->FatalError(env, "JNU_SetStaticFieldByName: illegal signature");
1494 }
1495 va_end(args);
1496
1497 done1:
1498 (*env)->DeleteLocalRef(env, cls);
1499 done2:
1500 if (hasException) {
1501 *hasException = (*env)->ExceptionCheck(env);
1502 }
1503 }