1 /* src/native/vm/gnu/java_lang_VMClassLoader.c
3 Copyright (C) 1996-2005, 2006, 2007, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
32 #include "mm/memory.h"
34 #include "native/jni.h"
35 #include "native/llni.h"
36 #include "native/native.h"
37 #include "native/include/java_lang_Class.h"
38 #include "native/include/java_lang_String.h"
39 #include "native/include/java_security_ProtectionDomain.h" /* required by... */
40 #include "native/include/java_lang_ClassLoader.h"
41 #include "native/include/java_util_Vector.h"
42 #include "native/include/java_util_HashMap.h"
43 #include "native/include/java_util_Map.h"
44 #include "native/include/java_lang_Boolean.h"
46 #include "native/include/java_lang_VMClassLoader.h"
48 #include "toolbox/logging.h"
49 #include "toolbox/list.h"
51 #if defined(ENABLE_ASSERTION)
52 #include "vm/assertion.h"
55 #include "vm/builtin.h"
56 #include "vm/exceptions.h"
57 #include "vm/initialize.h"
58 #include "vm/primitive.h"
59 #include "vm/stringlocal.h"
62 #include "vm/jit/asmpart.h"
64 #include "vmcore/class.h"
65 #include "vmcore/classcache.h"
66 #include "vmcore/linker.h"
67 #include "vmcore/loader.h"
68 #include "vmcore/options.h"
69 #include "vmcore/statistics.h"
70 #include "vmcore/suck.h"
71 #include "vmcore/zip.h"
73 #if defined(ENABLE_JVMTI)
74 #include "native/jvmti/cacaodbg.h"
77 /* native methods implemented by this file ************************************/
79 static JNINativeMethod methods[] = {
80 { "defineClass", "(Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_defineClass },
81 { "getPrimitiveClass", "(C)Ljava/lang/Class;", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_getPrimitiveClass },
82 { "resolveClass", "(Ljava/lang/Class;)V", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_resolveClass },
83 { "loadClass", "(Ljava/lang/String;Z)Ljava/lang/Class;", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_loadClass },
84 { "nativeGetResources", "(Ljava/lang/String;)Ljava/util/Vector;", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_nativeGetResources },
85 { "defaultAssertionStatus", "()Z", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_defaultAssertionStatus },
86 { "defaultUserAssertionStatus", "()Z", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_defaultUserAssertionStatus },
87 { "packageAssertionStatus0", "(Ljava/lang/Boolean;Ljava/lang/Boolean;)Ljava/util/Map;", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_packageAssertionStatus0 },
88 { "classAssertionStatus0", "(Ljava/lang/Boolean;Ljava/lang/Boolean;)Ljava/util/Map;", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_classAssertionStatus0 },
89 { "findLoadedClass", "(Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/Class;", (void *) (uintptr_t) &Java_java_lang_VMClassLoader_findLoadedClass },
93 /* _Jv_java_lang_VMClassLoader_init ********************************************
95 Register native functions.
97 *******************************************************************************/
99 void _Jv_java_lang_VMClassLoader_init(void)
103 u = utf_new_char("java/lang/VMClassLoader");
105 native_method_register(u, methods, NATIVE_METHODS_COUNT);
110 * Class: java/lang/VMClassLoader
111 * Method: defineClass
112 * Signature: (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;
114 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClassLoader_defineClass(JNIEnv *env, jclass clazz, java_lang_ClassLoader *cl, java_lang_String *name, java_handle_bytearray_t *data, int32_t offset, int32_t len, java_security_ProtectionDomain *pd)
118 classloader_t *loader;
121 #if defined(ENABLE_JVMTI)
122 jint new_class_data_len = 0;
123 unsigned char* new_class_data = NULL;
126 /* check if data was passed */
129 exceptions_throw_nullpointerexception();
133 /* check the indexes passed */
135 if ((offset < 0) || (len < 0) || ((offset + len) > LLNI_array_size(data))) {
136 exceptions_throw_arrayindexoutofboundsexception();
140 /* add classloader to classloader hashtable */
142 loader = loader_hashtable_classloader_add((java_handle_t *) cl);
145 /* convert '.' to '/' in java string */
147 utfname = javastring_toutf((java_handle_t *) name, true);
153 #if defined(ENABLE_JVMTI)
154 /* XXX again this will not work because of the indirection cell for classloaders */
156 /* fire Class File Load Hook JVMTI event */
159 jvmti_ClassFileLoadHook(utfname, len, (unsigned char *) data->data,
160 loader, (java_handle_t *) pd,
161 &new_class_data_len, &new_class_data);
164 /* define the class */
166 #if defined(ENABLE_JVMTI)
167 /* check if the JVMTI wants to modify the class */
169 if (new_class_data == NULL)
170 c = class_define(utfname, loader, new_class_data_len, new_class_data, pd);
173 c = class_define(utfname, loader, len, (uint8_t *) &LLNI_array_direct(data, offset), (java_handle_t *) pd);
178 /* for convenience */
180 o = LLNI_classinfo_wrap(c);
182 /* set ProtectionDomain */
184 LLNI_field_set_ref(o, pd, pd);
191 * Class: java/lang/VMClassLoader
192 * Method: getPrimitiveClass
193 * Signature: (C)Ljava/lang/Class;
195 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClassLoader_getPrimitiveClass(JNIEnv *env, jclass clazz, int32_t type)
199 c = primitive_class_get_by_char(type);
202 exceptions_throw_classnotfoundexception(utf_null);
206 return LLNI_classinfo_wrap(c);
211 * Class: java/lang/VMClassLoader
212 * Method: resolveClass
213 * Signature: (Ljava/lang/Class;)V
215 JNIEXPORT void JNICALL Java_java_lang_VMClassLoader_resolveClass(JNIEnv *env, jclass clazz, java_lang_Class *c)
219 ci = LLNI_classinfo_unwrap(c);
222 exceptions_throw_nullpointerexception();
228 if (!(ci->state & CLASS_LINKED))
229 (void) link_class(ci);
236 * Class: java/lang/VMClassLoader
238 * Signature: (Ljava/lang/String;Z)Ljava/lang/Class;
240 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClassLoader_loadClass(JNIEnv *env, jclass clazz, java_lang_String *name, int32_t resolve)
246 exceptions_throw_nullpointerexception();
250 /* create utf string in which '.' is replaced by '/' */
252 u = javastring_toutf((java_handle_t *) name, true);
256 c = load_class_bootstrap(u);
261 /* resolve class -- if requested */
267 return LLNI_classinfo_wrap(c);
272 * Class: java/lang/VMClassLoader
273 * Method: nativeGetResources
274 * Signature: (Ljava/lang/String;)Ljava/util/Vector;
276 JNIEXPORT java_util_Vector* JNICALL Java_java_lang_VMClassLoader_nativeGetResources(JNIEnv *env, jclass clazz, java_lang_String *name)
278 java_handle_t *o; /* vector being created */
279 methodinfo *m; /* "add" method of vector */
280 java_handle_t *path; /* path to be added */
281 list_classpath_entry *lce; /* classpath entry */
282 utf *utfname; /* utf to look for */
283 char *buffer; /* char buffer */
284 char *namestart; /* start of name to use */
285 char *tmppath; /* temporary buffer */
286 int32_t namelen; /* length of name to use */
287 int32_t searchlen; /* length of name to search */
288 int32_t bufsize; /* size of buffer allocated */
289 int32_t pathlen; /* name of path to assemble */
290 struct stat buf; /* buffer for stat */
291 jboolean ret; /* return value of "add" */
293 /* get the resource name as utf string */
295 utfname = javastring_toutf((java_handle_t *) name, false);
300 /* copy it to a char buffer */
302 namelen = utf_bytes(utfname);
304 bufsize = namelen + strlen("0");
305 buffer = MNEW(char, bufsize);
307 utf_copy(buffer, utfname);
310 /* skip leading '/' */
312 if (namestart[0] == '/') {
318 /* remove trailing `.class' */
320 if (namelen >= 6 && strcmp(namestart + (namelen - 6), ".class") == 0) {
324 /* create a new needle to look for, if necessary */
326 if (searchlen != bufsize-1) {
327 utfname = utf_new(namestart, searchlen);
334 o = native_new_and_init(class_java_util_Vector);
339 /* get Vector.add() method */
341 m = class_resolveclassmethod(class_java_util_Vector,
343 utf_new_char("(Ljava/lang/Object;)Z"),
350 /* iterate over all classpath entries */
352 for (lce = list_first(list_classpath_entries); lce != NULL;
353 lce = list_next(list_classpath_entries, lce)) {
354 /* clear path pointer */
357 #if defined(ENABLE_ZLIB)
358 if (lce->type == CLASSPATH_ARCHIVE) {
360 if (zip_find(lce, utfname)) {
361 pathlen = strlen("jar:file://") + lce->pathlen + strlen("!/") +
362 namelen + strlen("0");
364 tmppath = MNEW(char, pathlen);
366 sprintf(tmppath, "jar:file://%s!/%s", lce->path, namestart);
367 path = javastring_new_from_utf_string(tmppath),
369 MFREE(tmppath, char, pathlen);
373 #endif /* defined(ENABLE_ZLIB) */
374 pathlen = strlen("file://") + lce->pathlen + namelen + strlen("0");
376 tmppath = MNEW(char, pathlen);
378 sprintf(tmppath, "file://%s%s", lce->path, namestart);
380 /* Does this file exist? */
382 if (stat(tmppath + strlen("file://") - 1, &buf) == 0)
383 if (!S_ISDIR(buf.st_mode))
384 path = javastring_new_from_utf_string(tmppath);
386 MFREE(tmppath, char, pathlen);
387 #if defined(ENABLE_ZLIB)
391 /* if a resource was found, add it to the vector */
394 ret = vm_call_method_int(m, o, path);
396 if (exceptions_get_exception() != NULL)
404 MFREE(buffer, char, bufsize);
406 return (java_util_Vector *) o;
409 MFREE(buffer, char, bufsize);
416 * Class: java/lang/VMClassLoader
417 * Method: defaultAssertionStatus
420 JNIEXPORT int32_t JNICALL Java_java_lang_VMClassLoader_defaultAssertionStatus(JNIEnv *env, jclass clazz)
422 #if defined(ENABLE_ASSERTION)
423 return assertion_system_enabled;
430 * Class: java/lang/VMClassLoader
431 * Method: userAssertionStatus
434 JNIEXPORT int32_t JNICALL Java_java_lang_VMClassLoader_defaultUserAssertionStatus(JNIEnv *env, jclass clazz)
436 #if defined(ENABLE_ASSERTION)
437 return assertion_user_enabled;
444 * Class: java/lang/VMClassLoader
445 * Method: packageAssertionStatus
446 * Signature: ()Ljava_util_Map;
448 JNIEXPORT java_util_Map* JNICALL Java_java_lang_VMClassLoader_packageAssertionStatus0(JNIEnv *env, jclass clazz, java_lang_Boolean *jtrue, java_lang_Boolean *jfalse)
451 #if defined(ENABLE_ASSERTION)
454 assertion_name_t *item;
459 hm = native_new_and_init(class_java_util_HashMap);
464 #if defined(ENABLE_ASSERTION)
465 /* if nothing todo, return now */
467 if (assertion_package_count == 0) {
468 return (java_util_Map *) hm;
471 /* get HashMap.put method */
473 m = class_resolveclassmethod(class_java_util_HashMap,
475 utf_new_char("(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"),
483 item = (assertion_name_t *)list_first(list_assertion_names);
485 while (item != NULL) {
486 if (item->package == false) {
487 item = (assertion_name_t *)list_next(list_assertion_names, item);
491 if (strcmp(item->name, "") == 0) {
492 /* unnamed package wanted */
496 js = javastring_new_from_ascii(item->name);
502 if (item->enabled == true) {
503 vm_call_method(m, hm, js, jtrue);
506 vm_call_method(m, hm, js, jfalse);
509 item = (assertion_name_t *)list_next(list_assertion_names, item);
513 return (java_util_Map *) hm;
517 * Class: java/lang/VMClassLoader
518 * Method: classAssertionStatus
519 * Signature: ()Ljava_util_Map;
521 JNIEXPORT java_util_Map* JNICALL Java_java_lang_VMClassLoader_classAssertionStatus0(JNIEnv *env, jclass clazz, java_lang_Boolean *jtrue, java_lang_Boolean *jfalse)
524 #if defined(ENABLE_ASSERTION)
527 assertion_name_t *item;
532 hm = native_new_and_init(class_java_util_HashMap);
537 #if defined(ENABLE_ASSERTION)
538 /* if nothing todo, return now */
540 if (assertion_class_count == 0) {
541 return (java_util_Map *) hm;
544 /* get HashMap.put method */
546 m = class_resolveclassmethod(class_java_util_HashMap,
548 utf_new_char("(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"),
556 item = (assertion_name_t *)list_first(list_assertion_names);
558 while (item != NULL) {
559 if (item->package == true) {
560 item = (assertion_name_t *)list_next(list_assertion_names, item);
564 js = javastring_new_from_ascii(item->name);
569 if (item->enabled == true) {
570 vm_call_method(m, hm, js, jtrue);
573 vm_call_method(m, hm, js, jfalse);
576 item = (assertion_name_t *)list_next(list_assertion_names, item);
580 return (java_util_Map *) hm;
585 * Class: java/lang/VMClassLoader
586 * Method: findLoadedClass
587 * Signature: (Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/Class;
589 JNIEXPORT java_lang_Class* JNICALL Java_java_lang_VMClassLoader_findLoadedClass(JNIEnv *env, jclass clazz, java_lang_ClassLoader *loader, java_lang_String *name)
595 /* XXX is it correct to add the classloader to the hashtable here? */
597 cl = loader_hashtable_classloader_add((java_handle_t *) loader);
599 /* replace `.' by `/', this is required by the classcache */
601 u = javastring_toutf((java_handle_t *) name, true);
603 /* lookup for defining classloader */
605 c = classcache_lookup_defined(cl, u);
607 /* if not found, lookup for initiating classloader */
610 c = classcache_lookup(cl, u);
612 return LLNI_classinfo_wrap(c);
617 * These are local overrides for various environment variables in Emacs.
618 * Please do not remove this and leave it at the end of the file, where
619 * Emacs will automagically detect them.
620 * ---------------------------------------------------------------------
623 * indent-tabs-mode: t
627 * vim:noexpandtab:sw=4:ts=4: