1 /* 2 * Copyright (c) 1994, 2012, 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 <string.h> 27 28 #include "jni.h" 29 #include "jni_util.h" 30 #include "jvm.h" 31 #include "java_props.h" 32 33 #include "java_lang_System.h" 34 35 #define OBJ "Ljava/lang/Object;" 36 37 /* Only register the performance-critical methods */ 38 static JNINativeMethod methods[] = { 39 {"currentTimeMillis", "()J", (void *)&JVM_CurrentTimeMillis}, 40 {"nanoTime", "()J", (void *)&JVM_NanoTime}, 41 {"arraycopy", "(" OBJ "I" OBJ "II)V", (void *)&JVM_ArrayCopy}, 42 }; 43 44 #undef OBJ 45 46 JNIEXPORT void JNICALL 47 Java_java_lang_System_registerNatives(JNIEnv *env, jclass cls) 48 { 49 (*env)->RegisterNatives(env, cls, 50 methods, sizeof(methods)/sizeof(methods[0])); 51 } 52 53 JNIEXPORT jint JNICALL 54 Java_java_lang_System_identityHashCode(JNIEnv *env, jobject this, jobject x) 55 { 56 return JVM_IHashCode(env, x); 57 } 58 59 #define PUTPROP(props, key, val) \ 60 if (1) { \ 61 jstring jkey = (*env)->NewStringUTF(env, key); \ 62 jstring jval = (*env)->NewStringUTF(env, val); \ 63 jobject r = (*env)->CallObjectMethod(env, props, putID, jkey, jval); \ 64 if ((*env)->ExceptionOccurred(env)) return NULL; \ 65 (*env)->DeleteLocalRef(env, jkey); \ 66 (*env)->DeleteLocalRef(env, jval); \ 67 (*env)->DeleteLocalRef(env, r); \ 68 } else ((void) 0) 69 70 /* "key" is a char type string with only ASCII character in it. 71 "val" is a nchar (typedefed in java_props.h) type string */ 72 73 #define PUTPROP_ForPlatformNString(props, key, val) \ 74 if (1) { \ 75 jstring jkey = (*env)->NewStringUTF(env, key); \ 76 jstring jval = GetStringPlatform(env, val); \ 77 jobject r = (*env)->CallObjectMethod(env, props, putID, jkey, jval); \ 78 if ((*env)->ExceptionOccurred(env)) return NULL; \ 79 (*env)->DeleteLocalRef(env, jkey); \ 80 (*env)->DeleteLocalRef(env, jval); \ 81 (*env)->DeleteLocalRef(env, r); \ 82 } else ((void) 0) 83 #define REMOVEPROP(props, key) \ 84 if (1) { \ 85 jstring jkey = JNU_NewStringPlatform(env, key); \ 86 jobject r = (*env)->CallObjectMethod(env, props, removeID, jkey); \ 87 if ((*env)->ExceptionOccurred(env)) return NULL; \ 88 (*env)->DeleteLocalRef(env, jkey); \ 89 (*env)->DeleteLocalRef(env, r); \ 90 } else ((void) 0) 91 #define GETPROP(props, key, jret) \ 92 if (1) { \ 93 jstring jkey = JNU_NewStringPlatform(env, key); \ 94 jret = (*env)->CallObjectMethod(env, props, getPropID, jkey); \ 95 if ((*env)->ExceptionOccurred(env)) return NULL; \ 96 (*env)->DeleteLocalRef(env, jkey); \ 97 } else ((void) 0) 98 99 #ifndef VENDOR /* Third party may overwrite this. */ 100 #define VENDOR "Oracle Corporation" 101 #define VENDOR_URL "http://java.oracle.com/" 102 #define VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/" 103 #endif 104 105 #define JAVA_MAX_SUPPORTED_VERSION 52 106 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 107 108 #ifdef JAVA_SPECIFICATION_VENDOR /* Third party may NOT overwrite this. */ 109 #error "ERROR: No override of JAVA_SPECIFICATION_VENDOR is allowed" 110 #else 111 #define JAVA_SPECIFICATION_VENDOR "Oracle Corporation" 112 #endif 113 114 static int fmtdefault; // boolean value 115 jobject fillI18nProps(JNIEnv *env, jobject props, char *baseKey, 116 char *platformDispVal, char *platformFmtVal, 117 jmethodID putID, jmethodID getPropID) { 118 jstring jVMBaseVal = NULL; 119 120 GETPROP(props, baseKey, jVMBaseVal); 121 if (jVMBaseVal) { 122 // user specified the base property. there's nothing to do here. 123 (*env)->DeleteLocalRef(env, jVMBaseVal); 124 } else { 125 char buf[64]; 126 jstring jVMVal = NULL; 127 const char *baseVal = ""; 128 129 /* user.xxx base property */ 130 if (fmtdefault) { 131 if (platformFmtVal) { 132 PUTPROP(props, baseKey, platformFmtVal); 133 baseVal = platformFmtVal; 134 } 135 } else { 136 if (platformDispVal) { 137 PUTPROP(props, baseKey, platformDispVal); 138 baseVal = platformDispVal; 139 } 140 } 141 142 /* user.xxx.display property */ 143 jio_snprintf(buf, sizeof(buf), "%s.display", baseKey); 144 GETPROP(props, buf, jVMVal); 145 if (jVMVal == NULL) { 146 if (platformDispVal && (strcmp(baseVal, platformDispVal) != 0)) { 147 PUTPROP(props, buf, platformDispVal); 148 } 149 } else { 150 (*env)->DeleteLocalRef(env, jVMVal); 151 } 152 153 /* user.xxx.format property */ 154 jio_snprintf(buf, sizeof(buf), "%s.format", baseKey); 155 GETPROP(props, buf, jVMVal); 156 if (jVMVal == NULL) { 157 if (platformFmtVal && (strcmp(baseVal, platformFmtVal) != 0)) { 158 PUTPROP(props, buf, platformFmtVal); 159 } 160 } else { 161 (*env)->DeleteLocalRef(env, jVMVal); 162 } 163 } 164 165 return NULL; 166 } 167 168 JNIEXPORT jobject JNICALL 169 Java_java_lang_System_initProperties(JNIEnv *env, jclass cla, jobject props) 170 { 171 char buf[128]; 172 java_props_t *sprops = GetJavaProperties(env); 173 jmethodID putID = (*env)->GetMethodID(env, 174 (*env)->GetObjectClass(env, props), 175 "put", 176 "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"); 177 jmethodID removeID = (*env)->GetMethodID(env, 178 (*env)->GetObjectClass(env, props), 179 "remove", 180 "(Ljava/lang/Object;)Ljava/lang/Object;"); 181 jmethodID getPropID = (*env)->GetMethodID(env, 182 (*env)->GetObjectClass(env, props), 183 "getProperty", 184 "(Ljava/lang/String;)Ljava/lang/String;"); 185 jobject ret = NULL; 186 jstring jVMVal = NULL; 187 188 if (sprops == NULL || putID == NULL ) return NULL; 189 190 PUTPROP(props, "java.specification.version", 191 JDK_MAJOR_VERSION "." JDK_MINOR_VERSION); 192 PUTPROP(props, "java.specification.name", 193 "Java Platform API Specification"); 194 PUTPROP(props, "java.specification.vendor", 195 JAVA_SPECIFICATION_VENDOR); 196 197 PUTPROP(props, "java.version", RELEASE); 198 PUTPROP(props, "java.vendor", VENDOR); 199 PUTPROP(props, "java.vendor.url", VENDOR_URL); 200 PUTPROP(props, "java.vendor.url.bug", VENDOR_URL_BUG); 201 202 jio_snprintf(buf, sizeof(buf), "%d.%d", JAVA_MAX_SUPPORTED_VERSION, 203 JAVA_MAX_SUPPORTED_MINOR_VERSION); 204 PUTPROP(props, "java.class.version", buf); 205 206 if (sprops->awt_toolkit) { 207 PUTPROP(props, "awt.toolkit", sprops->awt_toolkit); 208 } 209 #ifdef MACOSX 210 if (sprops->awt_headless) { 211 PUTPROP(props, "java.awt.headless", sprops->awt_headless); 212 } 213 #endif 214 215 /* os properties */ 216 PUTPROP(props, "os.name", sprops->os_name); 217 PUTPROP(props, "os.version", sprops->os_version); 218 PUTPROP(props, "os.arch", sprops->os_arch); 219 220 #ifdef JDK_ARCH_ABI_PROP_NAME 221 PUTPROP(props, "sun.arch.abi", sprops->sun_arch_abi); 222 #endif 223 224 /* file system properties */ 225 PUTPROP(props, "file.separator", sprops->file_separator); 226 PUTPROP(props, "path.separator", sprops->path_separator); 227 PUTPROP(props, "line.separator", sprops->line_separator); 228 229 /* 230 * user.language 231 * user.script, user.country, user.variant (if user's environment specifies them) 232 * file.encoding 233 * file.encoding.pkg 234 */ 235 PUTPROP(props, "user.language", sprops->language); 236 if (sprops->script) { 237 PUTPROP(props, "user.script", sprops->script); 238 } 239 if (sprops->country) { 240 PUTPROP(props, "user.country", sprops->country); 241 } 242 if (sprops->variant) { 243 PUTPROP(props, "user.variant", sprops->variant); 244 } 245 PUTPROP(props, "file.encoding", sprops->encoding); 246 PUTPROP(props, "sun.jnu.encoding", sprops->sun_jnu_encoding); 247 if (sprops->sun_stdout_encoding != NULL) { 248 PUTPROP(props, "sun.stdout.encoding", sprops->sun_stdout_encoding); 249 } 250 if (sprops->sun_stderr_encoding != NULL) { 251 PUTPROP(props, "sun.stderr.encoding", sprops->sun_stderr_encoding); 252 } 253 PUTPROP(props, "file.encoding.pkg", "sun.io"); 254 255 /* unicode_encoding specifies the default endianness */ 256 PUTPROP(props, "sun.io.unicode.encoding", sprops->unicode_encoding); 257 PUTPROP(props, "sun.cpu.isalist", 258 (sprops->cpu_isalist ? sprops->cpu_isalist : "")); 259 PUTPROP(props, "sun.cpu.endian", sprops->cpu_endian); 260 261 262 #ifdef MACOSX 263 /* Proxy setting properties */ 264 if (sprops->httpProxyEnabled) { 265 PUTPROP(props, "http.proxyHost", sprops->httpHost); 266 PUTPROP(props, "http.proxyPort", sprops->httpPort); 267 } 268 269 if (sprops->httpsProxyEnabled) { 270 PUTPROP(props, "https.proxyHost", sprops->httpsHost); 271 PUTPROP(props, "https.proxyPort", sprops->httpsPort); 272 } 273 274 if (sprops->ftpProxyEnabled) { 275 PUTPROP(props, "ftp.proxyHost", sprops->ftpHost); 276 PUTPROP(props, "ftp.proxyPort", sprops->ftpPort); 277 } 278 279 if (sprops->socksProxyEnabled) { 280 PUTPROP(props, "socksProxyHost", sprops->socksHost); 281 PUTPROP(props, "socksProxyPort", sprops->socksPort); 282 } 283 284 if (sprops->gopherProxyEnabled) { 285 // The gopher client is different in that it expects an 'is this set?' flag that the others don't. 286 PUTPROP(props, "gopherProxySet", "true"); 287 PUTPROP(props, "gopherProxyHost", sprops->gopherHost); 288 PUTPROP(props, "gopherProxyPort", sprops->gopherPort); 289 } else { 290 PUTPROP(props, "gopherProxySet", "false"); 291 } 292 293 // Mac OS X only has a single proxy exception list which applies 294 // to all protocols 295 if (sprops->exceptionList) { 296 PUTPROP(props, "http.nonProxyHosts", sprops->exceptionList); 297 // HTTPS: implementation in jsse.jar uses http.nonProxyHosts 298 PUTPROP(props, "ftp.nonProxyHosts", sprops->exceptionList); 299 PUTPROP(props, "socksNonProxyHosts", sprops->exceptionList); 300 } 301 #endif 302 303 /* !!! DO NOT call PUTPROP_ForPlatformNString before this line !!! 304 * !!! I18n properties have not been set up yet !!! 305 */ 306 307 /* Printing properties */ 308 /* Note: java.awt.printerjob is an implementation private property which 309 * just happens to have a java.* name because it is referenced in 310 * a java.awt class. It is the mechanism by which the implementation 311 * finds the appropriate class in the JRE for the platform. 312 * It is explicitly not designed to be overridden by clients as 313 * a way of replacing the implementation class, and in any case 314 * the mechanism by which the class is loaded is constrained to only 315 * find and load classes that are part of the JRE. 316 * This property may be removed if that mechanism is redesigned 317 */ 318 PUTPROP(props, "java.awt.printerjob", sprops->printerJob); 319 320 /* data model */ 321 if (sizeof(sprops) == 4) { 322 sprops->data_model = "32"; 323 } else if (sizeof(sprops) == 8) { 324 sprops->data_model = "64"; 325 } else { 326 sprops->data_model = "unknown"; 327 } 328 PUTPROP(props, "sun.arch.data.model", \ 329 sprops->data_model); 330 331 /* patch level */ 332 PUTPROP(props, "sun.os.patch.level", \ 333 sprops->patch_level); 334 335 /* Java2D properties */ 336 /* Note: java.awt.graphicsenv is an implementation private property which 337 * just happens to have a java.* name because it is referenced in 338 * a java.awt class. It is the mechanism by which the implementation 339 * finds the appropriate class in the JRE for the platform. 340 * It is explicitly not designed to be overridden by clients as 341 * a way of replacing the implementation class, and in any case 342 * the mechanism by which the class is loaded is constrained to only 343 * find and load classes that are part of the JRE. 344 * This property may be removed if that mechanism is redesigned 345 */ 346 PUTPROP(props, "java.awt.graphicsenv", sprops->graphics_env); 347 if (sprops->font_dir != NULL) { 348 PUTPROP_ForPlatformNString(props, 349 "sun.java2d.fontpath", sprops->font_dir); 350 } 351 352 PUTPROP_ForPlatformNString(props, "java.io.tmpdir", sprops->tmp_dir); 353 354 PUTPROP_ForPlatformNString(props, "user.name", sprops->user_name); 355 PUTPROP_ForPlatformNString(props, "user.home", sprops->user_home); 356 357 PUTPROP(props, "user.timezone", sprops->timezone); 358 359 PUTPROP_ForPlatformNString(props, "user.dir", sprops->user_dir); 360 361 /* This is a sun. property as it is currently only set for Gnome and 362 * Windows desktops. 363 */ 364 if (sprops->desktop != NULL) { 365 PUTPROP(props, "sun.desktop", sprops->desktop); 366 } 367 368 /* 369 * unset "user.language", "user.script", "user.country", and "user.variant" 370 * in order to tell whether the command line option "-DXXXX=YYYY" is 371 * specified or not. They will be reset in fillI18nProps() below. 372 */ 373 REMOVEPROP(props, "user.language"); 374 REMOVEPROP(props, "user.script"); 375 REMOVEPROP(props, "user.country"); 376 REMOVEPROP(props, "user.variant"); 377 REMOVEPROP(props, "file.encoding"); 378 379 ret = JVM_InitProperties(env, props); 380 381 /* Check the compatibility flag */ 382 GETPROP(props, "sun.locale.formatasdefault", jVMVal); 383 if (jVMVal) { 384 const char * val = (*env)->GetStringUTFChars(env, jVMVal, 0); 385 fmtdefault = !strcmp(val, "true"); 386 (*env)->ReleaseStringUTFChars(env, jVMVal, val); 387 (*env)->DeleteLocalRef(env, jVMVal); 388 } 389 390 /* reconstruct i18n related properties */ 391 fillI18nProps(env, props, "user.language", sprops->display_language, 392 sprops->format_language, putID, getPropID); 393 fillI18nProps(env, props, "user.script", 394 sprops->display_script, sprops->format_script, putID, getPropID); 395 fillI18nProps(env, props, "user.country", 396 sprops->display_country, sprops->format_country, putID, getPropID); 397 fillI18nProps(env, props, "user.variant", 398 sprops->display_variant, sprops->format_variant, putID, getPropID); 399 GETPROP(props, "file.encoding", jVMVal); 400 if (jVMVal == NULL) { 401 #ifdef MACOSX 402 /* 403 * Since sun_jnu_encoding is now hard-coded to UTF-8 on Mac, we don't 404 * want to use it to overwrite file.encoding 405 */ 406 PUTPROP(props, "file.encoding", sprops->encoding); 407 #else 408 if (fmtdefault) { 409 PUTPROP(props, "file.encoding", sprops->encoding); 410 } else { 411 PUTPROP(props, "file.encoding", sprops->sun_jnu_encoding); 412 } 413 #endif 414 } else { 415 (*env)->DeleteLocalRef(env, jVMVal); 416 } 417 418 return ret; 419 } 420 421 /* 422 * The following three functions implement setter methods for 423 * java.lang.System.{in, out, err}. They are natively implemented 424 * because they violate the semantics of the language (i.e. set final 425 * variable). 426 */ 427 JNIEXPORT void JNICALL 428 Java_java_lang_System_setIn0(JNIEnv *env, jclass cla, jobject stream) 429 { 430 jfieldID fid = 431 (*env)->GetStaticFieldID(env,cla,"in","Ljava/io/InputStream;"); 432 if (fid == 0) 433 return; 434 (*env)->SetStaticObjectField(env,cla,fid,stream); 435 } 436 437 JNIEXPORT void JNICALL 438 Java_java_lang_System_setOut0(JNIEnv *env, jclass cla, jobject stream) 439 { 440 jfieldID fid = 441 (*env)->GetStaticFieldID(env,cla,"out","Ljava/io/PrintStream;"); 442 if (fid == 0) 443 return; 444 (*env)->SetStaticObjectField(env,cla,fid,stream); 445 } 446 447 JNIEXPORT void JNICALL 448 Java_java_lang_System_setErr0(JNIEnv *env, jclass cla, jobject stream) 449 { 450 jfieldID fid = 451 (*env)->GetStaticFieldID(env,cla,"err","Ljava/io/PrintStream;"); 452 if (fid == 0) 453 return; 454 (*env)->SetStaticObjectField(env,cla,fid,stream); 455 } 456 457 static void cpchars(jchar *dst, char *src, int n) 458 { 459 int i; 460 for (i = 0; i < n; i++) { 461 dst[i] = src[i]; 462 } 463 } 464 465 JNIEXPORT jstring JNICALL 466 Java_java_lang_System_mapLibraryName(JNIEnv *env, jclass ign, jstring libname) 467 { 468 int len; 469 int prefix_len = (int) strlen(JNI_LIB_PREFIX); 470 int suffix_len = (int) strlen(JNI_LIB_SUFFIX); 471 472 jchar chars[256]; 473 if (libname == NULL) { 474 JNU_ThrowNullPointerException(env, 0); 475 return NULL; 476 } 477 len = (*env)->GetStringLength(env, libname); 478 if (len > 240) { 479 JNU_ThrowIllegalArgumentException(env, "name too long"); 480 return NULL; 481 } 482 cpchars(chars, JNI_LIB_PREFIX, prefix_len); 483 (*env)->GetStringRegion(env, libname, 0, len, chars + prefix_len); 484 len += prefix_len; 485 cpchars(chars + len, JNI_LIB_SUFFIX, suffix_len); 486 len += suffix_len; 487 488 return (*env)->NewString(env, chars, len); 489 }