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 fastEncoding = FAST_8859_1;
665 else if (strcmp(encname, "ISO646-US") == 0)
666 fastEncoding = FAST_646_US;
667 else if (strcmp(encname, "Cp1252") == 0 ||
668 /* This is a temporary fix until we move */
669 /* to wide character versions of all Windows */
670 /* calls. */
671 strcmp(encname, "utf-16le") == 0)
672 fastEncoding = FAST_CP1252;
673 else {
674 fastEncoding = NO_FAST_ENCODING;
675 jnuEncoding = (jstring)(*env)->NewGlobalRef(env, enc);
676 }
677 (*env)->ReleaseStringUTFChars(env, enc, encname);
678 }
679 }
680 } else {
681 (*env)->ExceptionClear(env);
682 }
683 } else {
684 (*env)->ExceptionClear(env);
685 }
686 (*env)->DeleteLocalRef(env, propname);
687 (*env)->DeleteLocalRef(env, enc);
688
689 /* Initialize method-id cache */
690 String_getBytes_ID = (*env)->GetMethodID(env, strClazz,
691 "getBytes", "(Ljava/lang/String;)[B");
692 CHECK_NULL(String_getBytes_ID);
693 String_init_ID = (*env)->GetMethodID(env, strClazz,
694 "<init>", "([BLjava/lang/String;)V");
695 }
696
697 static jboolean isJNUEncodingSupported = JNI_FALSE;
698 static jboolean jnuEncodingSupported(JNIEnv *env) {
699 jboolean exe;
700 if (isJNUEncodingSupported == JNI_TRUE) {
701 return JNI_TRUE;
702 }
703 isJNUEncodingSupported = (jboolean) JNU_CallStaticMethodByName (
704 env, &exe,
705 "java/nio/charset/Charset",
706 "isSupported",
707 "(Ljava/lang/String;)Z",
708 jnuEncoding).z;
709 return isJNUEncodingSupported;
710 }
711
712
713 JNIEXPORT jstring
714 NewStringPlatform(JNIEnv *env, const char *str)
715 {
716 return JNU_NewStringPlatform(env, str);
717 }
718
719 JNIEXPORT jstring JNICALL
720 JNU_NewStringPlatform(JNIEnv *env, const char *str)
721 {
722 jstring result = NULL;
723 jbyteArray hab = 0;
724 int len;
725
726 if (fastEncoding == NO_ENCODING_YET) {
727 initializeEncoding(env);
728 JNU_CHECK_EXCEPTION_RETURN(env, NULL);
729 }
730
731 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
732 return newString8859_1(env, str);
733 if (fastEncoding == FAST_646_US)
734 return newString646_US(env, str);
735 if (fastEncoding == FAST_CP1252)
736 return newStringCp1252(env, str);
737
738 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
739 return NULL;
740
741 len = (int)strlen(str);
742 hab = (*env)->NewByteArray(env, len);
743 if (hab != 0) {
744 jclass strClazz = JNU_ClassString(env);
745 CHECK_NULL_RETURN(strClazz, 0);
746 (*env)->SetByteArrayRegion(env, hab, 0, len, (jbyte *)str);
747 if (jnuEncodingSupported(env)) {
748 result = (*env)->NewObject(env, strClazz,
749 String_init_ID, hab, jnuEncoding);
750 } else {
751 /*If the encoding specified in sun.jnu.encoding is not endorsed
752 by "Charset.isSupported" we have to fall back to use String(byte[])
753 explicitly here without specifying the encoding name, in which the
754 StringCoding class will pickup the iso-8859-1 as the fallback
755 converter for us.
756 */
757 jmethodID mid = (*env)->GetMethodID(env, strClazz,
758 "<init>", "([B)V");
759 if (mid != NULL) {
760 result = (*env)->NewObject(env, strClazz, mid, hab);
761 }
762 }
763 (*env)->DeleteLocalRef(env, hab);
764 return result;
765 }
766 return NULL;
767 }
768
769 JNIEXPORT const char *
770 GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
771 {
772 return JNU_GetStringPlatformChars(env, jstr, isCopy);
773 }
774
775 JNIEXPORT const char * JNICALL
776 JNU_GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy)
777 {
778 char *result = NULL;
779 jbyteArray hab = 0;
780
781 if (isCopy)
782 *isCopy = JNI_TRUE;
783
784 if (fastEncoding == NO_ENCODING_YET) {
785 initializeEncoding(env);
786 JNU_CHECK_EXCEPTION_RETURN(env, 0);
787 }
788
789 if ((fastEncoding == FAST_8859_1) || (fastEncoding == NO_ENCODING_YET))
790 return getString8859_1Chars(env, jstr);
791 if (fastEncoding == FAST_646_US)
792 return getString646_USChars(env, jstr);
793 if (fastEncoding == FAST_CP1252)
794 return getStringCp1252Chars(env, jstr);
795
796 if ((*env)->EnsureLocalCapacity(env, 2) < 0)
797 return 0;
798
799 if (jnuEncodingSupported(env)) {
800 hab = (*env)->CallObjectMethod(env, jstr, String_getBytes_ID, jnuEncoding);
801 } else {
802 jmethodID mid;
803 jclass strClazz = JNU_ClassString(env);
804 CHECK_NULL_RETURN(strClazz, 0);
805 mid = (*env)->GetMethodID(env, strClazz,
806 "getBytes", "()[B");
807 if (mid != NULL) {
808 hab = (*env)->CallObjectMethod(env, jstr, mid);
809 }
810 }
811
812 if (!(*env)->ExceptionCheck(env)) {
813 jint len = (*env)->GetArrayLength(env, hab);
814 result = MALLOC_MIN4(len);
815 if (result == 0) {
816 JNU_ThrowOutOfMemoryError(env, 0);
817 (*env)->DeleteLocalRef(env, hab);
818 return 0;
819 }
820 (*env)->GetByteArrayRegion(env, hab, 0, len, (jbyte *)result);
821 result[len] = 0; /* NULL-terminate */
822 }
823
824 (*env)->DeleteLocalRef(env, hab);
825 return result;
826 }
827
828 JNIEXPORT void JNICALL
829 JNU_ReleaseStringPlatformChars(JNIEnv *env, jstring jstr, const char *str)
830 {
831 free((void *)str);
832 }
833
834 /*
835 * Export the platform dependent path canonicalization so that
836 * VM can find it when loading system classes.
837 * This function is also used by the instrumentation agent.
838 */
839 extern int canonicalize(char *path, const char *out, int len);
840
841 JNIEXPORT int
842 Canonicalize(JNIEnv *unused, char *orig, char *out, int len)
843 {
844 /* canonicalize an already natived path */
845 return canonicalize(orig, out, len);
846 }
847
848 JNIEXPORT jclass JNICALL
849 JNU_ClassString(JNIEnv *env)
850 {
851 static jclass cls = 0;
852 if (cls == 0) {
853 jclass c;
854 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
855 return 0;
856 c = (*env)->FindClass(env, "java/lang/String");
857 CHECK_NULL_RETURN(c, NULL);
858 cls = (*env)->NewGlobalRef(env, c);
859 (*env)->DeleteLocalRef(env, c);
860 }
861 return cls;
862 }
863
864 JNIEXPORT jclass JNICALL
865 JNU_ClassClass(JNIEnv *env)
866 {
867 static jclass cls = 0;
868 if (cls == 0) {
869 jclass c;
870 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
871 return 0;
872 c = (*env)->FindClass(env, "java/lang/Class");
873 CHECK_NULL_RETURN(c, NULL);
874 cls = (*env)->NewGlobalRef(env, c);
875 (*env)->DeleteLocalRef(env, c);
876 }
877 return cls;
878 }
879
880 JNIEXPORT jclass JNICALL
881 JNU_ClassObject(JNIEnv *env)
882 {
883 static jclass cls = 0;
884 if (cls == 0) {
885 jclass c;
886 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
887 return 0;
888 c = (*env)->FindClass(env, "java/lang/Object");
889 CHECK_NULL_RETURN(c, NULL);
890 cls = (*env)->NewGlobalRef(env, c);
891 (*env)->DeleteLocalRef(env, c);
892 }
893 return cls;
894 }
895
896 JNIEXPORT jclass JNICALL
897 JNU_ClassThrowable(JNIEnv *env)
898 {
899 static jclass cls = 0;
900 if (cls == 0) {
901 jclass c;
902 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
903 return 0;
904 c = (*env)->FindClass(env, "java/lang/Throwable");
905 CHECK_NULL_RETURN(c, NULL);
906 cls = (*env)->NewGlobalRef(env, c);
907 (*env)->DeleteLocalRef(env, c);
908 }
909 return cls;
910 }
911
912 JNIEXPORT jint JNICALL
913 JNU_CopyObjectArray(JNIEnv *env, jobjectArray dst, jobjectArray src,
914 jint count)
915 {
916 int i;
917 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
918 return -1;
919 for (i=0; i<count; i++) {
920 jstring p = (*env)->GetObjectArrayElement(env, src, i);
921 (*env)->SetObjectArrayElement(env, dst, i, p);
922 (*env)->DeleteLocalRef(env, p);
923 }
924 return 0;
925 }
926
927 JNIEXPORT void * JNICALL
928 JNU_GetEnv(JavaVM *vm, jint version)
929 {
930 void *env;
931 (*vm)->GetEnv(vm, &env, version);
932 return env;
933 }
934
935 JNIEXPORT jint JNICALL
936 JNU_IsInstanceOfByName(JNIEnv *env, jobject object, char* classname)
937 {
938 jclass cls;
939 if ((*env)->EnsureLocalCapacity(env, 1) < 0)
940 return JNI_ERR;
941 cls = (*env)->FindClass(env, classname);
942 if (cls != NULL) {
943 jint result = (*env)->IsInstanceOf(env, object, cls);
944 (*env)->DeleteLocalRef(env, cls);
945 return result;
946 }
947 return JNI_ERR;
948 }
949
950 JNIEXPORT jboolean JNICALL
951 JNU_Equals(JNIEnv *env, jobject object1, jobject object2)
952 {
953 static jmethodID mid = NULL;
954 if (mid == NULL) {
955 jclass objClazz = JNU_ClassObject(env);
956 CHECK_NULL_RETURN(objClazz, JNI_FALSE);
957 mid = (*env)->GetMethodID(env, objClazz, "equals",
958 "(Ljava/lang/Object;)Z");
959 CHECK_NULL_RETURN(mid, JNI_FALSE);
960 }
961 return (*env)->CallBooleanMethod(env, object1, mid, object2);
962 }
963
964
965 /************************************************************************
966 * Thread calls
967 */
968
969 static jmethodID Object_waitMID;
970 static jmethodID Object_notifyMID;
971 static jmethodID Object_notifyAllMID;
972
973 JNIEXPORT void JNICALL
974 JNU_MonitorWait(JNIEnv *env, jobject object, jlong timeout)
975 {
976 if (object == NULL) {
977 JNU_ThrowNullPointerException(env, "JNU_MonitorWait argument");
978 return;
979 }
980 if (Object_waitMID == NULL) {
981 jclass cls = JNU_ClassObject(env);
982 if (cls == NULL) {
983 return;
984 }
985 Object_waitMID = (*env)->GetMethodID(env, cls, "wait", "(J)V");
986 if (Object_waitMID == NULL) {
987 return;
988 }
989 }
990 (*env)->CallVoidMethod(env, object, Object_waitMID, timeout);
991 }
992
993 JNIEXPORT void JNICALL
994 JNU_Notify(JNIEnv *env, jobject object)
995 {
996 if (object == NULL) {
997 JNU_ThrowNullPointerException(env, "JNU_Notify argument");
998 return;
999 }
1000 if (Object_notifyMID == NULL) {
1001 jclass cls = JNU_ClassObject(env);
1002 if (cls == NULL) {
1003 return;
1004 }
1005 Object_notifyMID = (*env)->GetMethodID(env, cls, "notify", "()V");
1006 if (Object_notifyMID == NULL) {
1007 return;
1008 }
1009 }
1010 (*env)->CallVoidMethod(env, object, Object_notifyMID);
1011 }
1012
1013 JNIEXPORT void JNICALL
1014 JNU_NotifyAll(JNIEnv *env, jobject object)
1015 {
1016 if (object == NULL) {
1017 JNU_ThrowNullPointerException(env, "JNU_NotifyAll argument");
1018 return;
1019 }
1020 if (Object_notifyAllMID == NULL) {
1021 jclass cls = JNU_ClassObject(env);
1022 if (cls == NULL) {
1023 return;
1024 }
1025 Object_notifyAllMID = (*env)->GetMethodID(env, cls,"notifyAll", "()V");
1026 if (Object_notifyAllMID == NULL) {
1027 return;
1028 }
1029 }
1030 (*env)->CallVoidMethod(env, object, Object_notifyAllMID);
1031 }
1032
1033
1034 /************************************************************************
1035 * Debugging utilities
1036 */
1037
1038 JNIEXPORT void JNICALL
1039 JNU_PrintString(JNIEnv *env, char *hdr, jstring string)
1040 {
1041 if (string == NULL) {
1042 fprintf(stderr, "%s: is NULL\n", hdr);
1043 } else {
1044 const char *stringPtr = JNU_GetStringPlatformChars(env, string, 0);
1045 if (stringPtr == 0)
1046 return;
1047 fprintf(stderr, "%s: %s\n", hdr, stringPtr);
1048 JNU_ReleaseStringPlatformChars(env, string, stringPtr);
1049 }
1050 }
1051
1052 JNIEXPORT void JNICALL
1053 JNU_PrintClass(JNIEnv *env, char* hdr, jobject object)
1054 {
1055 if (object == NULL) {
1056 fprintf(stderr, "%s: object is NULL\n", hdr);
1057 return;
1058 } else {
1059 jclass cls = (*env)->GetObjectClass(env, object);
1060 jstring clsName = JNU_ToString(env, cls);
1061 if (clsName == NULL) {
1062 JNU_PrintString(env, hdr, clsName);
1063 }
1064 (*env)->DeleteLocalRef(env, cls);
1065 (*env)->DeleteLocalRef(env, clsName);
1066 }
1067 }
1068
1069 JNIEXPORT jstring JNICALL
1070 JNU_ToString(JNIEnv *env, jobject object)
1071 {
1072 if (object == NULL) {
1073 return (*env)->NewStringUTF(env, "NULL");
1074 } else {
1075 return (jstring)JNU_CallMethodByName(env,
1076 NULL,
1077 object,
1078 "toString",
1079 "()Ljava/lang/String;").l;
1080 }
1081 }
1082
1083 JNIEXPORT jvalue JNICALL
1084 JNU_GetFieldByName(JNIEnv *env,
1085 jboolean *hasException,
1086 jobject obj,
1087 const char *name,
1088 const char *signature)
1089 {
1090 jclass cls;
1091 jfieldID fid;
1092 jvalue result;
1093
1094 result.i = 0;
1095
1096 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1097 goto done2;
1098
1099 cls = (*env)->GetObjectClass(env, obj);
1100 fid = (*env)->GetFieldID(env, cls, name, signature);
1101 if (fid == 0)
1102 goto done1;
1103
1104 switch (*signature) {
1105 case '[':
1106 case 'L':
1107 result.l = (*env)->GetObjectField(env, obj, fid);
1108 break;
1109 case 'Z':
1110 result.z = (*env)->GetBooleanField(env, obj, fid);
1111 break;
1112 case 'B':
1113 result.b = (*env)->GetByteField(env, obj, fid);
1114 break;
1115 case 'C':
1116 result.c = (*env)->GetCharField(env, obj, fid);
1117 break;
1118 case 'S':
1119 result.s = (*env)->GetShortField(env, obj, fid);
1120 break;
1121 case 'I':
1122 result.i = (*env)->GetIntField(env, obj, fid);
1123 break;
1124 case 'J':
1125 result.j = (*env)->GetLongField(env, obj, fid);
1126 break;
1127 case 'F':
1128 result.f = (*env)->GetFloatField(env, obj, fid);
1129 break;
1130 case 'D':
1131 result.d = (*env)->GetDoubleField(env, obj, fid);
1132 break;
1133
1134 default:
1135 (*env)->FatalError(env, "JNU_GetFieldByName: illegal signature");
1136 }
1137
1138 done1:
1139 (*env)->DeleteLocalRef(env, cls);
1140 done2:
1141 if (hasException) {
1142 *hasException = (*env)->ExceptionCheck(env);
1143 }
1144 return result;
1145 }
1146
1147 JNIEXPORT void JNICALL
1148 JNU_SetFieldByName(JNIEnv *env,
1149 jboolean *hasException,
1150 jobject obj,
1151 const char *name,
1152 const char *signature,
1153 ...)
1154 {
1155 jclass cls;
1156 jfieldID fid;
1157 va_list args;
1158
1159 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1160 goto done2;
1161
1162 cls = (*env)->GetObjectClass(env, obj);
1163 fid = (*env)->GetFieldID(env, cls, name, signature);
1164 if (fid == 0)
1165 goto done1;
1166
1167 va_start(args, signature);
1168 switch (*signature) {
1169 case '[':
1170 case 'L':
1171 (*env)->SetObjectField(env, obj, fid, va_arg(args, jobject));
1172 break;
1173 case 'Z':
1174 (*env)->SetBooleanField(env, obj, fid, (jboolean)va_arg(args, int));
1175 break;
1176 case 'B':
1177 (*env)->SetByteField(env, obj, fid, (jbyte)va_arg(args, int));
1178 break;
1179 case 'C':
1180 (*env)->SetCharField(env, obj, fid, (jchar)va_arg(args, int));
1181 break;
1182 case 'S':
1183 (*env)->SetShortField(env, obj, fid, (jshort)va_arg(args, int));
1184 break;
1185 case 'I':
1186 (*env)->SetIntField(env, obj, fid, va_arg(args, jint));
1187 break;
1188 case 'J':
1189 (*env)->SetLongField(env, obj, fid, va_arg(args, jlong));
1190 break;
1191 case 'F':
1192 (*env)->SetFloatField(env, obj, fid, (jfloat)va_arg(args, jdouble));
1193 break;
1194 case 'D':
1195 (*env)->SetDoubleField(env, obj, fid, va_arg(args, jdouble));
1196 break;
1197
1198 default:
1199 (*env)->FatalError(env, "JNU_SetFieldByName: illegal signature");
1200 }
1201 va_end(args);
1202
1203 done1:
1204 (*env)->DeleteLocalRef(env, cls);
1205 done2:
1206 if (hasException) {
1207 *hasException = (*env)->ExceptionCheck(env);
1208 }
1209 }
1210
1211 JNIEXPORT jvalue JNICALL
1212 JNU_GetStaticFieldByName(JNIEnv *env,
1213 jboolean *hasException,
1214 const char *classname,
1215 const char *name,
1216 const char *signature)
1217 {
1218 jclass cls;
1219 jfieldID fid;
1220 jvalue result;
1221
1222 result.i = 0;
1223
1224 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1225 goto done2;
1226
1227 cls = (*env)->FindClass(env, classname);
1228 if (cls == 0)
1229 goto done2;
1230
1231 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1232 if (fid == 0)
1233 goto done1;
1234
1235 switch (*signature) {
1236 case '[':
1237 case 'L':
1238 result.l = (*env)->GetStaticObjectField(env, cls, fid);
1239 break;
1240 case 'Z':
1241 result.z = (*env)->GetStaticBooleanField(env, cls, fid);
1242 break;
1243 case 'B':
1244 result.b = (*env)->GetStaticByteField(env, cls, fid);
1245 break;
1246 case 'C':
1247 result.c = (*env)->GetStaticCharField(env, cls, fid);
1248 break;
1249 case 'S':
1250 result.s = (*env)->GetStaticShortField(env, cls, fid);
1251 break;
1252 case 'I':
1253 result.i = (*env)->GetStaticIntField(env, cls, fid);
1254 break;
1255 case 'J':
1256 result.j = (*env)->GetStaticLongField(env, cls, fid);
1257 break;
1258 case 'F':
1259 result.f = (*env)->GetStaticFloatField(env, cls, fid);
1260 break;
1261 case 'D':
1262 result.d = (*env)->GetStaticDoubleField(env, cls, fid);
1263 break;
1264
1265 default:
1266 (*env)->FatalError(env, "JNU_GetStaticFieldByName: illegal signature");
1267 }
1268
1269 done1:
1270 (*env)->DeleteLocalRef(env, cls);
1271 done2:
1272 if (hasException) {
1273 *hasException = (*env)->ExceptionCheck(env);
1274 }
1275 return result;
1276 }
1277
1278 JNIEXPORT void JNICALL
1279 JNU_SetStaticFieldByName(JNIEnv *env,
1280 jboolean *hasException,
1281 const char *classname,
1282 const char *name,
1283 const char *signature,
1284 ...)
1285 {
1286 jclass cls;
1287 jfieldID fid;
1288 va_list args;
1289
1290 if ((*env)->EnsureLocalCapacity(env, 3) < 0)
1291 goto done2;
1292
1293 cls = (*env)->FindClass(env, classname);
1294 if (cls == 0)
1295 goto done2;
1296
1297 fid = (*env)->GetStaticFieldID(env, cls, name, signature);
1298 if (fid == 0)
1299 goto done1;
1300
1301 va_start(args, signature);
1302 switch (*signature) {
1303 case '[':
1304 case 'L':
1305 (*env)->SetStaticObjectField(env, cls, fid, va_arg(args, jobject));
1306 break;
1307 case 'Z':
1308 (*env)->SetStaticBooleanField(env, cls, fid, (jboolean)va_arg(args, int));
1309 break;
1310 case 'B':
1311 (*env)->SetStaticByteField(env, cls, fid, (jbyte)va_arg(args, int));
1312 break;
1313 case 'C':
1314 (*env)->SetStaticCharField(env, cls, fid, (jchar)va_arg(args, int));
1315 break;
1316 case 'S':
1317 (*env)->SetStaticShortField(env, cls, fid, (jshort)va_arg(args, int));
1318 break;
1319 case 'I':
1320 (*env)->SetStaticIntField(env, cls, fid, va_arg(args, jint));
1321 break;
1322 case 'J':
1323 (*env)->SetStaticLongField(env, cls, fid, va_arg(args, jlong));
1324 break;
1325 case 'F':
1326 (*env)->SetStaticFloatField(env, cls, fid, (jfloat)va_arg(args, jdouble));
1327 break;
1328 case 'D':
1329 (*env)->SetStaticDoubleField(env, cls, fid, va_arg(args, jdouble));
1330 break;
1331
1332 default:
1333 (*env)->FatalError(env, "JNU_SetStaticFieldByName: illegal signature");
1334 }
1335 va_end(args);
1336
1337 done1:
1338 (*env)->DeleteLocalRef(env, cls);
1339 done2:
1340 if (hasException) {
1341 *hasException = (*env)->ExceptionCheck(env);
1342 }
1343 }