1 /*
2 * Copyright (c) 1998, 2020, 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 "util.h"
27 #include "VirtualMachineImpl.h"
28 #include "commonRef.h"
29 #include "inStream.h"
30 #include "outStream.h"
31 #include "eventHandler.h"
32 #include "eventHelper.h"
33 #include "threadControl.h"
34 #include "SDE.h"
35 #include "FrameID.h"
36
37 static char *versionName = "Java Debug Wire Protocol (Reference Implementation)";
38
39 static jboolean
version(PacketInputStream * in,PacketOutputStream * out)40 version(PacketInputStream *in, PacketOutputStream *out)
41 {
42 char buf[500];
43 char *vmName;
44 char *vmVersion;
45 char *vmInfo;
46
47 /* Now the JDWP versions are the same as JVMTI versions */
48 int majorVersion = jvmtiMajorVersion();
49 int minorVersion = 0;
50
51 if (gdata->vmDead) {
52 outStream_setError(out, JDWP_ERROR(VM_DEAD));
53 return JNI_TRUE;
54 }
55
56 vmVersion = gdata->property_java_version;
57 if (vmVersion == NULL) {
58 vmVersion = "<unknown>";
59 }
60 vmName = gdata->property_java_vm_name;
61 if (vmName == NULL) {
62 vmName = "<unknown>";
63 }
64 vmInfo = gdata->property_java_vm_info;
65 if (vmInfo == NULL) {
66 vmInfo = "<unknown>";
67 }
68
69 /*
70 * Write the descriptive version information
71 */
72 (void)snprintf(buf, sizeof(buf),
73 "%s version %d.%d\nJVM Debug Interface version %d.%d\n"
74 "JVM version %s (%s, %s)",
75 versionName, majorVersion, minorVersion,
76 jvmtiMajorVersion(), jvmtiMinorVersion(),
77 vmVersion, vmName, vmInfo);
78 (void)outStream_writeString(out, buf);
79
80 /*
81 * Write the JDWP version numbers
82 */
83 (void)outStream_writeInt(out, majorVersion);
84 (void)outStream_writeInt(out, minorVersion);
85
86 /*
87 * Write the VM version and name
88 */
89 (void)outStream_writeString(out, vmVersion);
90 (void)outStream_writeString(out, vmName);
91
92 return JNI_TRUE;
93 }
94
95 static jboolean
classesForSignature(PacketInputStream * in,PacketOutputStream * out)96 classesForSignature(PacketInputStream *in, PacketOutputStream *out)
97 {
98 JNIEnv *env;
99 char *signature;
100
101 if (gdata->vmDead) {
102 outStream_setError(out, JDWP_ERROR(VM_DEAD));
103 return JNI_TRUE;
104 }
105
106 signature = inStream_readString(in);
107 if (signature == NULL) {
108 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
109 return JNI_TRUE;
110 }
111 if (inStream_error(in)) {
112 return JNI_TRUE;
113 }
114
115 env = getEnv();
116
117 WITH_LOCAL_REFS(env, 1) {
118
119 jint classCount;
120 jclass *theClasses;
121 jvmtiError error;
122
123 error = allLoadedClasses(&theClasses, &classCount);
124 if ( error == JVMTI_ERROR_NONE ) {
125 /* Count classes in theClasses which match signature */
126 int matchCount = 0;
127 /* Count classes written to the JDWP connection */
128 int writtenCount = 0;
129 int i;
130
131 for (i = 0; i < classCount; i++) {
132 jclass clazz = theClasses[i];
133 jint status = classStatus(clazz);
134 char *candidate_signature = NULL;
135 jint wanted =
136 (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY|
137 JVMTI_CLASS_STATUS_PRIMITIVE);
138
139 /* We want prepared classes, primitives, and arrays only */
140 if ((status & wanted) == 0) {
141 continue;
142 }
143
144 error = classSignature(clazz, &candidate_signature, NULL);
145 if (error != JVMTI_ERROR_NONE) {
146 // Clazz become invalid since the time we get the class list
147 // Skip this entry
148 if (error == JVMTI_ERROR_INVALID_CLASS) {
149 continue;
150 }
151
152 break;
153 }
154
155 if (strcmp(candidate_signature, signature) == 0) {
156 /* Float interesting classes (those that
157 * are matching and are prepared) to the
158 * beginning of the array.
159 */
160 theClasses[i] = theClasses[matchCount];
161 theClasses[matchCount++] = clazz;
162 }
163 jvmtiDeallocate(candidate_signature);
164 }
165
166 /* At this point matching prepared classes occupy
167 * indicies 0 thru matchCount-1 of theClasses.
168 */
169
170 if ( error == JVMTI_ERROR_NONE ) {
171 (void)outStream_writeInt(out, matchCount);
172 for (; writtenCount < matchCount; writtenCount++) {
173 jclass clazz = theClasses[writtenCount];
174 jint status = classStatus(clazz);
175 jbyte tag = referenceTypeTag(clazz);
176 (void)outStream_writeByte(out, tag);
177 (void)outStream_writeObjectRef(env, out, clazz);
178 (void)outStream_writeInt(out, map2jdwpClassStatus(status));
179 /* No point in continuing if there's an error */
180 if (outStream_error(out)) {
181 break;
182 }
183 }
184 }
185
186 jvmtiDeallocate(theClasses);
187 }
188
189 if ( error != JVMTI_ERROR_NONE ) {
190 outStream_setError(out, map2jdwpError(error));
191 }
192
193 } END_WITH_LOCAL_REFS(env);
194
195 jvmtiDeallocate(signature);
196
197 return JNI_TRUE;
198 }
199
200 static jboolean
allModules(PacketInputStream * in,PacketOutputStream * out)201 allModules(PacketInputStream *in, PacketOutputStream *out)
202 {
203 JNIEnv *env;
204
205 if (gdata->vmDead) {
206 outStream_setError(out, JDWP_ERROR(VM_DEAD));
207 return JNI_TRUE;
208 }
209
210 env = getEnv();
211
212 WITH_LOCAL_REFS(env, 1) {
213
214 jint count = 0;
215 jint i = 0;
216 jobject* modules = NULL;
217 jvmtiError error = JVMTI_ERROR_NONE;
218
219 error = JVMTI_FUNC_PTR(gdata->jvmti, GetAllModules) (gdata->jvmti, &count, &modules);
220 if (error != JVMTI_ERROR_NONE) {
221 outStream_setError(out, map2jdwpError(error));
222 } else {
223 (void)outStream_writeInt(out, count);
224 for (i = 0; i < count; i++) {
225 (void)outStream_writeModuleRef(env, out, modules[i]);
226 }
227 jvmtiDeallocate(modules);
228 }
229
230 } END_WITH_LOCAL_REFS(env);
231
232 return JNI_TRUE;
233 }
234
235 static jboolean
allClasses1(PacketInputStream * in,PacketOutputStream * out,int outputGenerics)236 allClasses1(PacketInputStream *in, PacketOutputStream *out, int outputGenerics)
237 {
238 JNIEnv *env;
239
240 if (gdata->vmDead) {
241 outStream_setError(out, JDWP_ERROR(VM_DEAD));
242 return JNI_TRUE;
243 }
244
245 env = getEnv();
246
247 WITH_LOCAL_REFS(env, 1) {
248
249 jint classCount;
250 jclass *theClasses;
251 jvmtiError error;
252
253 error = allLoadedClasses(&theClasses, &classCount);
254 if ( error != JVMTI_ERROR_NONE ) {
255 outStream_setError(out, map2jdwpError(error));
256 } else {
257 /* Count classes in theClasses which are prepared */
258 int prepCount = 0;
259 /* Count classes written to the JDWP connection */
260 int writtenCount = 0;
261 int i;
262
263 for (i=0; i<classCount; i++) {
264 jclass clazz = theClasses[i];
265 jint status = classStatus(clazz);
266 jint wanted =
267 (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY);
268
269 /* We want prepared classes and arrays only */
270 if ((status & wanted) != 0) {
271 /* Float interesting classes (those that
272 * are prepared) to the beginning of the array.
273 */
274 theClasses[i] = theClasses[prepCount];
275 theClasses[prepCount++] = clazz;
276 }
277 }
278
279 /* At this point prepared classes occupy
280 * indicies 0 thru prepCount-1 of theClasses.
281 */
282
283 (void)outStream_writeInt(out, prepCount);
284 for (; writtenCount < prepCount; writtenCount++) {
285 char *signature = NULL;
286 char *genericSignature = NULL;
287 jclass clazz = theClasses[writtenCount];
288 jint status = classStatus(clazz);
289 jbyte tag = referenceTypeTag(clazz);
290 jvmtiError error;
291
292 error = classSignature(clazz, &signature, &genericSignature);
293 if (error != JVMTI_ERROR_NONE) {
294 outStream_setError(out, map2jdwpError(error));
295 break;
296 }
297
298 (void)outStream_writeByte(out, tag);
299 (void)outStream_writeObjectRef(env, out, clazz);
300 (void)outStream_writeString(out, signature);
301 if (outputGenerics == 1) {
302 writeGenericSignature(out, genericSignature);
303 }
304
305 (void)outStream_writeInt(out, map2jdwpClassStatus(status));
306 jvmtiDeallocate(signature);
307 if (genericSignature != NULL) {
308 jvmtiDeallocate(genericSignature);
309 }
310
311 /* No point in continuing if there's an error */
312 if (outStream_error(out)) {
313 break;
314 }
315 }
316 jvmtiDeallocate(theClasses);
317 }
318
319 } END_WITH_LOCAL_REFS(env);
320
321 return JNI_TRUE;
322 }
323
324 static jboolean
allClasses(PacketInputStream * in,PacketOutputStream * out)325 allClasses(PacketInputStream *in, PacketOutputStream *out)
326 {
327 return allClasses1(in, out, 0);
328 }
329
330 static jboolean
allClassesWithGeneric(PacketInputStream * in,PacketOutputStream * out)331 allClassesWithGeneric(PacketInputStream *in, PacketOutputStream *out)
332 {
333 return allClasses1(in, out, 1);
334 }
335
336 /***********************************************************/
337
338
339 static jboolean
instanceCounts(PacketInputStream * in,PacketOutputStream * out)340 instanceCounts(PacketInputStream *in, PacketOutputStream *out)
341 {
342 jint classCount;
343 jclass *classes;
344 JNIEnv *env;
345 int ii;
346
347 if (gdata->vmDead) {
348 outStream_setError(out, JDWP_ERROR(VM_DEAD));
349 return JNI_TRUE;
350 }
351
352 classCount = inStream_readInt(in);
353
354 if (inStream_error(in)) {
355 return JNI_TRUE;
356 }
357 if (classCount == 0) {
358 (void)outStream_writeInt(out, 0);
359 return JNI_TRUE;
360 }
361 if (classCount < 0) {
362 outStream_setError(out, JDWP_ERROR(ILLEGAL_ARGUMENT));
363 return JNI_TRUE;
364 }
365 env = getEnv();
366 classes = jvmtiAllocate(classCount * (int)sizeof(jclass));
367 for (ii = 0; ii < classCount; ii++) {
368 jdwpError errorCode;
369 classes[ii] = inStream_readClassRef(env, in);
370 errorCode = inStream_error(in);
371 if (errorCode != JDWP_ERROR(NONE)) {
372 /*
373 * A class could have been unloaded/gc'd so
374 * if we get an error, just ignore it and keep
375 * going. An instanceCount of 0 will be returned.
376 */
377 if (errorCode == JDWP_ERROR(INVALID_OBJECT) ||
378 errorCode == JDWP_ERROR(INVALID_CLASS)) {
379 inStream_clearError(in);
380 classes[ii] = NULL;
381 continue;
382 }
383 jvmtiDeallocate(classes);
384 return JNI_TRUE;
385 }
386 }
387
388 WITH_LOCAL_REFS(env, 1) {
389 jlong *counts;
390 jvmtiError error;
391
392 counts = jvmtiAllocate(classCount * (int)sizeof(jlong));
393 /* Iterate over heap getting info on these classes */
394 error = classInstanceCounts(classCount, classes, counts);
395 if (error != JVMTI_ERROR_NONE) {
396 outStream_setError(out, map2jdwpError(error));
397 } else {
398 (void)outStream_writeInt(out, classCount);
399 for (ii = 0; ii < classCount; ii++) {
400 (void)outStream_writeLong(out, counts[ii]);
401 }
402 }
403 jvmtiDeallocate(counts);
404 } END_WITH_LOCAL_REFS(env);
405 jvmtiDeallocate(classes);
406 return JNI_TRUE;
407 }
408
409 static jboolean
redefineClasses(PacketInputStream * in,PacketOutputStream * out)410 redefineClasses(PacketInputStream *in, PacketOutputStream *out)
411 {
412 jvmtiClassDefinition *classDefs;
413 jboolean ok = JNI_TRUE;
414 jint classCount;
415 jint i;
416 JNIEnv *env;
417
418 if (gdata->vmDead) {
419 /* quietly ignore */
420 return JNI_TRUE;
421 }
422
423 classCount = inStream_readInt(in);
424 if (inStream_error(in)) {
425 return JNI_TRUE;
426 }
427 if ( classCount == 0 ) {
428 return JNI_TRUE;
429 }
430 /*LINTED*/
431 classDefs = jvmtiAllocate(classCount*(int)sizeof(jvmtiClassDefinition));
432 if (classDefs == NULL) {
433 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
434 return JNI_TRUE;
435 }
436 /*LINTED*/
437 (void)memset(classDefs, 0, classCount*sizeof(jvmtiClassDefinition));
438
439 env = getEnv();
440 for (i = 0; i < classCount; ++i) {
441 int byteCount;
442 unsigned char * bytes;
443 jclass clazz;
444
445 clazz = inStream_readClassRef(env, in);
446 if (inStream_error(in)) {
447 ok = JNI_FALSE;
448 break;
449 }
450 byteCount = inStream_readInt(in);
451 if (inStream_error(in)) {
452 ok = JNI_FALSE;
453 break;
454 }
455 if ( byteCount <= 0 ) {
456 outStream_setError(out, JDWP_ERROR(INVALID_CLASS_FORMAT));
457 ok = JNI_FALSE;
458 break;
459 }
460 bytes = (unsigned char *)jvmtiAllocate(byteCount);
461 if (bytes == NULL) {
462 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
463 ok = JNI_FALSE;
464 break;
465 }
466 (void)inStream_readBytes(in, byteCount, (jbyte *)bytes);
467 if (inStream_error(in)) {
468 ok = JNI_FALSE;
469 break;
470 }
471
472 classDefs[i].klass = clazz;
473 classDefs[i].class_byte_count = byteCount;
474 classDefs[i].class_bytes = bytes;
475 }
476
477 if (ok == JNI_TRUE) {
478 jvmtiError error;
479
480 error = JVMTI_FUNC_PTR(gdata->jvmti,RedefineClasses)
481 (gdata->jvmti, classCount, classDefs);
482 if (error != JVMTI_ERROR_NONE) {
483 outStream_setError(out, map2jdwpError(error));
484 } else {
485 /* zap our BP info */
486 for ( i = 0 ; i < classCount; i++ ) {
487 eventHandler_freeClassBreakpoints(classDefs[i].klass);
488 }
489 }
490 }
491
492 /* free up allocated memory */
493 for ( i = 0 ; i < classCount; i++ ) {
494 if ( classDefs[i].class_bytes != NULL ) {
495 jvmtiDeallocate((void*)classDefs[i].class_bytes);
496 }
497 }
498 jvmtiDeallocate(classDefs);
499
500 return JNI_TRUE;
501 }
502
503 static jboolean
setDefaultStratum(PacketInputStream * in,PacketOutputStream * out)504 setDefaultStratum(PacketInputStream *in, PacketOutputStream *out)
505 {
506 char *stratumId;
507
508 if (gdata->vmDead) {
509 /* quietly ignore */
510 return JNI_TRUE;
511 }
512
513 stratumId = inStream_readString(in);
514 if (inStream_error(in)) {
515 return JNI_TRUE;
516 } else if (strcmp(stratumId, "") == 0) {
517 stratumId = NULL;
518 }
519 setGlobalStratumId(stratumId);
520
521 return JNI_TRUE;
522 }
523
524 static jboolean
getAllThreads(PacketInputStream * in,PacketOutputStream * out)525 getAllThreads(PacketInputStream *in, PacketOutputStream *out)
526 {
527 JNIEnv *env;
528
529 if (gdata->vmDead) {
530 outStream_setError(out, JDWP_ERROR(VM_DEAD));
531 return JNI_TRUE;
532 }
533
534 env = getEnv();
535
536 WITH_LOCAL_REFS(env, 1) {
537
538 int i;
539 jint threadCount;
540 jthread *theThreads;
541
542 theThreads = allThreads(&threadCount);
543 if (theThreads == NULL) {
544 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
545 } else {
546 /* Squish out all of the debugger-spawned threads */
547 threadCount = filterDebugThreads(theThreads, threadCount);
548
549 (void)outStream_writeInt(out, threadCount);
550 for (i = 0; i <threadCount; i++) {
551 (void)outStream_writeObjectRef(env, out, theThreads[i]);
552 }
553
554 jvmtiDeallocate(theThreads);
555 }
556
557 } END_WITH_LOCAL_REFS(env);
558
559 return JNI_TRUE;
560 }
561
562 static jboolean
topLevelThreadGroups(PacketInputStream * in,PacketOutputStream * out)563 topLevelThreadGroups(PacketInputStream *in, PacketOutputStream *out)
564 {
565 JNIEnv *env;
566
567 if (gdata->vmDead) {
568 outStream_setError(out, JDWP_ERROR(VM_DEAD));
569 return JNI_TRUE;
570 }
571
572 env = getEnv();
573
574 WITH_LOCAL_REFS(env, 1) {
575
576 jvmtiError error;
577 jint groupCount;
578 jthreadGroup *groups;
579
580 groups = NULL;
581 error = JVMTI_FUNC_PTR(gdata->jvmti,GetTopThreadGroups)
582 (gdata->jvmti, &groupCount, &groups);
583 if (error != JVMTI_ERROR_NONE) {
584 outStream_setError(out, map2jdwpError(error));
585 } else {
586 int i;
587
588 (void)outStream_writeInt(out, groupCount);
589 for (i = 0; i < groupCount; i++) {
590 (void)outStream_writeObjectRef(env, out, groups[i]);
591 }
592
593 jvmtiDeallocate(groups);
594 }
595
596 } END_WITH_LOCAL_REFS(env);
597
598 return JNI_TRUE;
599 }
600
601 static jboolean
dispose(PacketInputStream * in,PacketOutputStream * out)602 dispose(PacketInputStream *in, PacketOutputStream *out)
603 {
604 return JNI_TRUE;
605 }
606
607 static jboolean
idSizes(PacketInputStream * in,PacketOutputStream * out)608 idSizes(PacketInputStream *in, PacketOutputStream *out)
609 {
610 (void)outStream_writeInt(out, sizeof(jfieldID)); /* fields */
611 (void)outStream_writeInt(out, sizeof(jmethodID)); /* methods */
612 (void)outStream_writeInt(out, sizeof(jlong)); /* objects */
613 (void)outStream_writeInt(out, sizeof(jlong)); /* referent types */
614 (void)outStream_writeInt(out, sizeof(FrameID)); /* frames */
615 return JNI_TRUE;
616 }
617
618 static jboolean
suspend(PacketInputStream * in,PacketOutputStream * out)619 suspend(PacketInputStream *in, PacketOutputStream *out)
620 {
621 jvmtiError error;
622
623 if (gdata->vmDead) {
624 outStream_setError(out, JDWP_ERROR(VM_DEAD));
625 return JNI_TRUE;
626 }
627 error = threadControl_suspendAll();
628 if (error != JVMTI_ERROR_NONE) {
629 outStream_setError(out, map2jdwpError(error));
630 }
631 return JNI_TRUE;
632 }
633
634 static jboolean
resume(PacketInputStream * in,PacketOutputStream * out)635 resume(PacketInputStream *in, PacketOutputStream *out)
636 {
637 jvmtiError error;
638
639 if (gdata->vmDead) {
640 outStream_setError(out, JDWP_ERROR(VM_DEAD));
641 return JNI_TRUE;
642 }
643 error = threadControl_resumeAll();
644 if (error != JVMTI_ERROR_NONE) {
645 outStream_setError(out, map2jdwpError(error));
646 }
647 return JNI_TRUE;
648 }
649
650 static jboolean
doExit(PacketInputStream * in,PacketOutputStream * out)651 doExit(PacketInputStream *in, PacketOutputStream *out)
652 {
653 jint exitCode;
654
655 exitCode = inStream_readInt(in);
656 if (gdata->vmDead) {
657 /* quietly ignore */
658 return JNI_FALSE;
659 }
660
661 /* We send the reply from here because we are about to exit. */
662 if (inStream_error(in)) {
663 outStream_setError(out, inStream_error(in));
664 }
665 outStream_sendReply(out);
666
667 forceExit(exitCode);
668
669 /* Shouldn't get here */
670 JDI_ASSERT(JNI_FALSE);
671
672 /* Shut up the compiler */
673 return JNI_FALSE;
674
675 }
676
677 static jboolean
createString(PacketInputStream * in,PacketOutputStream * out)678 createString(PacketInputStream *in, PacketOutputStream *out)
679 {
680 JNIEnv *env;
681 char *cstring;
682
683 if (gdata->vmDead) {
684 outStream_setError(out, JDWP_ERROR(VM_DEAD));
685 return JNI_TRUE;
686 }
687
688 cstring = inStream_readString(in);
689 if (cstring == NULL) {
690 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
691 return JNI_TRUE;
692 }
693 if (inStream_error(in)) {
694 return JNI_TRUE;
695 }
696
697 env = getEnv();
698
699 WITH_LOCAL_REFS(env, 1) {
700
701 jstring string;
702
703 string = JNI_FUNC_PTR(env,NewStringUTF)(env, cstring);
704 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
705 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
706 } else {
707 (void)outStream_writeObjectRef(env, out, string);
708 }
709
710 } END_WITH_LOCAL_REFS(env);
711
712 jvmtiDeallocate(cstring);
713
714 return JNI_TRUE;
715 }
716
717 static jboolean
capabilities(PacketInputStream * in,PacketOutputStream * out)718 capabilities(PacketInputStream *in, PacketOutputStream *out)
719 {
720 jvmtiCapabilities caps;
721 jvmtiError error;
722
723 if (gdata->vmDead) {
724 outStream_setError(out, JDWP_ERROR(VM_DEAD));
725 return JNI_TRUE;
726 }
727 error = jvmtiGetCapabilities(&caps);
728 if (error != JVMTI_ERROR_NONE) {
729 outStream_setError(out, map2jdwpError(error));
730 return JNI_TRUE;
731 }
732
733 (void)outStream_writeBoolean(out, (jboolean)caps.can_generate_field_modification_events);
734 (void)outStream_writeBoolean(out, (jboolean)caps.can_generate_field_access_events);
735 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_bytecodes);
736 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_synthetic_attribute);
737 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_owned_monitor_info);
738 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_current_contended_monitor);
739 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_monitor_info);
740 return JNI_TRUE;
741 }
742
743 static jboolean
capabilitiesNew(PacketInputStream * in,PacketOutputStream * out)744 capabilitiesNew(PacketInputStream *in, PacketOutputStream *out)
745 {
746 jvmtiCapabilities caps;
747 jvmtiError error;
748
749 if (gdata->vmDead) {
750 outStream_setError(out, JDWP_ERROR(VM_DEAD));
751 return JNI_TRUE;
752 }
753 error = jvmtiGetCapabilities(&caps);
754 if (error != JVMTI_ERROR_NONE) {
755 outStream_setError(out, map2jdwpError(error));
756 return JNI_TRUE;
757 }
758
759 (void)outStream_writeBoolean(out, (jboolean)caps.can_generate_field_modification_events);
760 (void)outStream_writeBoolean(out, (jboolean)caps.can_generate_field_access_events);
761 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_bytecodes);
762 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_synthetic_attribute);
763 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_owned_monitor_info);
764 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_current_contended_monitor);
765 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_monitor_info);
766
767 /* new since JDWP version 1.4 */
768 (void)outStream_writeBoolean(out, (jboolean)caps.can_redefine_classes);
769 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE /* can_add_method */ );
770 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE /* can_unrestrictedly_redefine_classes */ );
771 /* 11: canPopFrames */
772 (void)outStream_writeBoolean(out, (jboolean)caps.can_pop_frame);
773 /* 12: canUseInstanceFilters */
774 (void)outStream_writeBoolean(out, (jboolean)JNI_TRUE);
775 /* 13: canGetSourceDebugExtension */
776 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_source_debug_extension);
777 /* 14: canRequestVMDeathEvent */
778 (void)outStream_writeBoolean(out, (jboolean)JNI_TRUE);
779 /* 15: canSetDefaultStratum */
780 (void)outStream_writeBoolean(out, (jboolean)JNI_TRUE);
781 /* 16: canGetInstanceInfo */
782 (void)outStream_writeBoolean(out, (jboolean)caps.can_tag_objects);
783 /* 17: canRequestMonitorEvents */
784 (void)outStream_writeBoolean(out, (jboolean)caps.can_generate_monitor_events);
785 /* 18: canGetMonitorFrameInfo */
786 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_owned_monitor_stack_depth_info);
787 /* remaining reserved */
788 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 19 */
789 /* 20 Can get constant pool information */
790 (void)outStream_writeBoolean(out, (jboolean)caps.can_get_constant_pool);
791 /* 21 Can force early return */
792 (void)outStream_writeBoolean(out, (jboolean)caps.can_force_early_return);
793
794 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 22 */
795 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 23 */
796 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 24 */
797 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 25 */
798 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 26 */
799 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 27 */
800 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 28 */
801 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 29 */
802 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 30 */
803 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 31 */
804 (void)outStream_writeBoolean(out, (jboolean)JNI_FALSE); /* 32 */
805 return JNI_TRUE;
806 }
807
808 static int
countPaths(char * string)809 countPaths(char *string) {
810 int cnt = 1; /* always have one */
811 char *pos = string;
812 char *ps;
813
814 ps = gdata->property_path_separator;
815 if ( ps == NULL ) {
816 ps = ";";
817 }
818 while ((pos = strchr(pos, ps[0])) != NULL) {
819 ++cnt;
820 ++pos;
821 }
822 return cnt;
823 }
824
825 static void
writePaths(PacketOutputStream * out,char * string)826 writePaths(PacketOutputStream *out, char *string) {
827 char *pos;
828 char *ps;
829 char *buf;
830 int npaths;
831 int i;
832
833 buf = jvmtiAllocate((int)strlen(string)+1);
834
835 npaths = countPaths(string);
836 (void)outStream_writeInt(out, npaths);
837
838 ps = gdata->property_path_separator;
839 if ( ps == NULL ) {
840 ps = ";";
841 }
842
843 pos = string;
844 for ( i = 0 ; i < npaths && pos != NULL; i++ ) {
845 char *psPos;
846 int plen;
847
848 psPos = strchr(pos, ps[0]);
849 if ( psPos == NULL ) {
850 plen = (int)strlen(pos);
851 } else {
852 plen = (int)(psPos-pos);
853 psPos++;
854 }
855 (void)memcpy(buf, pos, plen);
856 buf[plen] = 0;
857 (void)outStream_writeString(out, buf);
858 pos = psPos;
859 }
860
861 jvmtiDeallocate(buf);
862 }
863
864 static jboolean
classPaths(PacketInputStream * in,PacketOutputStream * out)865 classPaths(PacketInputStream *in, PacketOutputStream *out)
866 {
867 char *ud;
868 char *cp;
869
870 ud = gdata->property_user_dir;
871 if ( ud == NULL ) {
872 ud = "";
873 }
874 cp = gdata->property_java_class_path;
875 if ( cp == NULL ) {
876 cp = "";
877 }
878 (void)outStream_writeString(out, ud);
879 writePaths(out, cp);
880 (void)outStream_writeInt(out, 0); // no bootclasspath
881 return JNI_TRUE;
882 }
883
884 static jboolean
disposeObjects(PacketInputStream * in,PacketOutputStream * out)885 disposeObjects(PacketInputStream *in, PacketOutputStream *out)
886 {
887 int i;
888 int refCount;
889 jlong id;
890 int requestCount;
891 JNIEnv *env;
892
893 if (gdata->vmDead) {
894 /* quietly ignore */
895 return JNI_TRUE;
896 }
897
898 requestCount = inStream_readInt(in);
899 if (inStream_error(in)) {
900 return JNI_TRUE;
901 }
902
903 env = getEnv();
904 for (i = 0; i < requestCount; i++) {
905 id = inStream_readObjectID(in);
906 refCount = inStream_readInt(in);
907 if (inStream_error(in)) {
908 return JNI_TRUE;
909 }
910 commonRef_releaseMultiple(env, id, refCount);
911 }
912
913 return JNI_TRUE;
914 }
915
916 static jboolean
holdEvents(PacketInputStream * in,PacketOutputStream * out)917 holdEvents(PacketInputStream *in, PacketOutputStream *out)
918 {
919 eventHelper_holdEvents();
920 return JNI_TRUE;
921 }
922
923 static jboolean
releaseEvents(PacketInputStream * in,PacketOutputStream * out)924 releaseEvents(PacketInputStream *in, PacketOutputStream *out)
925 {
926 eventHelper_releaseEvents();
927 return JNI_TRUE;
928 }
929
930 Command VirtualMachine_Commands[] = {
931 {version, "Version"},
932 {classesForSignature, "ClassesForSignature"},
933 {allClasses, "AllClasses"},
934 {getAllThreads, "GetAllThreads"},
935 {topLevelThreadGroups, "TopLevelThreadGroups"},
936 {dispose, "Dispose"},
937 {idSizes, "IDSizes"},
938 {suspend, "Suspend"},
939 {resume, "Resume"},
940 {doExit, "DoExit"},
941 {createString, "CreateString"},
942 {capabilities, "Capabilities"},
943 {classPaths, "ClassPaths"},
944 {disposeObjects, "DisposeObjects"},
945 {holdEvents, "HoldEvents"},
946 {releaseEvents, "ReleaseEvents"},
947 {capabilitiesNew, "CapabilitiesNew"},
948 {redefineClasses, "RedefineClasses"},
949 {setDefaultStratum, "SetDefaultStratum"},
950 {allClassesWithGeneric, "AllClassesWithGeneric"},
951 {instanceCounts, "InstanceCounts"},
952 {allModules, "AllModules"}
953 };
954
955 DEBUG_DISPATCH_DEFINE_CMDSET(VirtualMachine)
956