/*
* Copyright ( c ) 1994 , 2022 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation . Oracle designates this
* particular file as subject to the " Classpath " exception as provided
* by Oracle in the LICENSE file that accompanied this code .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#include <string.h>
#include "jni.h"
#include "jni_util.h"
#include "jvm.h"
#include "java_props.h"
#include "java_lang_System.h"
#include "jdk_internal_util_SystemProps_Raw.h"
#define OBJ "Ljava/lang/Object;"
/* Only register the performance-critical methods */
static JNINativeMethod methods[] = {
{"currentTimeMillis" , "()J" , (void *)&JVM_CurrentTimeMillis},
{"nanoTime" , "()J" , (void *)&JVM_NanoTime},
{"arraycopy" , "(" OBJ "I" OBJ "II)V" , (void *)&JVM_ArrayCopy},
};
#undef OBJ
JNIEXPORT void JNICALL
Java_java_lang_System_registerNatives(JNIEnv *env, jclass cls)
{
(*env)->RegisterNatives(env, cls,
methods, sizeof (methods)/sizeof (methods[0 ]));
}
JNIEXPORT jint JNICALL
Java_java_lang_System_identityHashCode(JNIEnv *env, jobject this , jobject x)
{
return JVM_IHashCode(env, x);
}
/* VENDOR, VENDOR_URL, VENDOR_URL_BUG are set in VersionProps.java.template. */
/*
* Store the UTF - 8 string encoding of the value in the array
* at the index if the value is non - null . Store nothing if the value is null .
* On any error , return from Java_jdk_internal_util_SystemProps_00024Raw_platformProperties .
*/
#define PUTPROP(array, prop_index, val) \
if (val != NULL) { \
jstring jval = (*env)->NewStringUTF(env, val); \
if (jval == NULL) \
return NULL; \
(*env)->SetObjectArrayElement(env, array, jdk_internal_util_SystemProps_Raw_## prop_index, jval); \
if ((*env)->ExceptionOccurred(env)) \
return NULL; \
(*env)->DeleteLocalRef(env, jval); \
}
/*
* Store the Platform string encoding of the value in the array
* at the index if the value is non - null . Store nothing if the value is null .
* On any error , return from Java_jdk_internal_util_SystemProps_00024Raw_platformProperties .
*/
#define PUTPROP_PlatformString(array, prop_index, val) \
if (val != NULL) { \
jstring jval = GetStringPlatform(env, val); \
if (jval == NULL) \
return NULL; \
(*env)->SetObjectArrayElement(env, array, jdk_internal_util_SystemProps_Raw_## prop_index, jval); \
if ((*env)->ExceptionOccurred(env)) \
return NULL; \
(*env)->DeleteLocalRef(env, jval); \
}
/*
* Gather the system properties and return as a String [ ] .
* The first FIXED_LENGTH entries are the platform defined property values , no names .
* The remaining array indices are alternating key / value pairs
* supplied by the VM including those defined on the command line
* using - Dkey = value that may override the platform defined value .
* The caller is responsible for replacing platform provided values as needed .
*
* Class : jdk_internal_util_SystemProps_Raw
* Method : platformProperties
* Signature : ( ) [ Ljava / lang / String ;
*/
JNIEXPORT jobjectArray JNICALL
Java_jdk_internal_util_SystemProps_00024Raw_platformProperties(JNIEnv *env, jclass cla)
{
java_props_t *sprops;
jobject propArray = NULL;
jclass classString;
int nstrings = jdk_internal_util_SystemProps_Raw_FIXED_LENGTH;
// Get the platform specific values
sprops = GetJavaProperties(env);
CHECK_NULL_RETURN(sprops, NULL);
/*
* ! ! ! DO NOT call PUTPROP_PlatformString ( NewStringPlatform ) before this line ! ! !
*/
InitializeEncoding(env, sprops->sun_jnu_encoding);
// Ensure capacity for the array and for a string for each fixed length element
if ((*env)->EnsureLocalCapacity(env, nstrings + 2 ) < 0 ) {
return NULL;
}
// Allocate an array of String for all the well known props
classString = JNU_ClassString(env);
CHECK_NULL_RETURN(classString, NULL);
propArray = (*env)->NewObjectArray(env, nstrings, classString, NULL);
CHECK_NULL_RETURN(propArray, NULL);
/* os properties */
PUTPROP(propArray, _os_name_NDX, sprops->os_name);
PUTPROP(propArray, _os_version_NDX, sprops->os_version);
PUTPROP(propArray, _os_arch_NDX, sprops->os_arch);
#ifdef JDK_ARCH_ABI_PROP_NAME
PUTPROP(propArray, _sun_arch_abi_NDX, sprops->sun_arch_abi);
#endif
/* file system properties */
PUTPROP(propArray, _file_separator_NDX, sprops->file_separator);
PUTPROP(propArray, _path_separator_NDX, sprops->path_separator);
PUTPROP(propArray, _line_separator_NDX, sprops->line_separator);
#ifdef MACOSX
/*
* Since sun_jnu_encoding is now hard - coded to UTF - 8 on Mac , we don ' t
* want to use it to overwrite file . encoding
*/
PUTPROP(propArray, _file_encoding_NDX, sprops->encoding);
#else
PUTPROP(propArray, _file_encoding_NDX, sprops->sun_jnu_encoding);
#endif
PUTPROP(propArray, _sun_jnu_encoding_NDX, sprops->sun_jnu_encoding);
/*
* file encoding for stdout and stderr
*/
PUTPROP(propArray, _stdout_encoding_NDX, sprops->stdout_encoding);
PUTPROP(propArray, _stderr_encoding_NDX, sprops->stderr_encoding);
/* unicode_encoding specifies the default endianness */
PUTPROP(propArray, _sun_io_unicode_encoding_NDX, sprops->unicode_encoding);
PUTPROP(propArray, _sun_cpu_endian_NDX, sprops->cpu_endian);
PUTPROP(propArray, _sun_cpu_isalist_NDX, sprops->cpu_isalist);
#ifdef MACOSX
/* Proxy setting properties */
if (sprops->httpProxyEnabled) {
PUTPROP(propArray, _http_proxyHost_NDX, sprops->httpHost);
PUTPROP(propArray, _http_proxyPort_NDX, sprops->httpPort);
}
if (sprops->httpsProxyEnabled) {
PUTPROP(propArray, _https_proxyHost_NDX, sprops->httpsHost);
PUTPROP(propArray, _https_proxyPort_NDX, sprops->httpsPort);
}
if (sprops->ftpProxyEnabled) {
PUTPROP(propArray, _ftp_proxyHost_NDX, sprops->ftpHost);
PUTPROP(propArray, _ftp_proxyPort_NDX, sprops->ftpPort);
}
if (sprops->socksProxyEnabled) {
PUTPROP(propArray, _socksProxyHost_NDX, sprops->socksHost);
PUTPROP(propArray, _socksProxyPort_NDX, sprops->socksPort);
}
// Mac OS X only has a single proxy exception list which applies
// to all protocols
if (sprops->exceptionList) {
PUTPROP(propArray, _http_nonProxyHosts_NDX, sprops->exceptionList);
PUTPROP(propArray, _ftp_nonProxyHosts_NDX, sprops->exceptionList);
PUTPROP(propArray, _socksNonProxyHosts_NDX, sprops->exceptionList);
}
#endif
/* data model */
if (sizeof (sprops) == 4 ) {
sprops->data_model = "32" ;
} else if (sizeof (sprops) == 8 ) {
sprops->data_model = "64" ;
} else {
sprops->data_model = "unknown" ;
}
PUTPROP(propArray, _sun_arch_data_model_NDX, sprops->data_model);
/* patch level */
PUTPROP(propArray, _sun_os_patch_level_NDX, sprops->patch_level);
PUTPROP_PlatformString(propArray, _java_io_tmpdir_NDX, sprops->tmp_dir);
PUTPROP_PlatformString(propArray, _user_name_NDX, sprops->user_name);
PUTPROP_PlatformString(propArray, _user_home_NDX, sprops->user_home);
PUTPROP_PlatformString(propArray, _user_dir_NDX, sprops->user_dir);
/*
* Set i18n related property fields from platform .
*/
PUTPROP(propArray, _display_language_NDX, sprops->display_language);
PUTPROP(propArray, _display_script_NDX, sprops->display_script);
PUTPROP(propArray, _display_country_NDX, sprops->display_country);
PUTPROP(propArray, _display_variant_NDX, sprops->display_variant);
PUTPROP(propArray, _format_language_NDX, sprops->format_language);
PUTPROP(propArray, _format_script_NDX, sprops->format_script);
PUTPROP(propArray, _format_country_NDX, sprops->format_country);
PUTPROP(propArray, _format_variant_NDX, sprops->format_variant);
return propArray;
}
/*
* Gather the VM and command line properties and return as a String [ ] .
* The array indices are alternating key / value pairs
* supplied by the VM including those defined on the command line
* using - Dkey = value that may override the platform defined value .
*
* Note : The platform encoding must have been set .
*
* Class : jdk_internal_util_SystemProps_Raw
* Method : vmProperties
* Signature : ( ) [ Ljava / lang / String ;
*/
JNIEXPORT jobjectArray JNICALL
Java_jdk_internal_util_SystemProps_00024Raw_vmProperties(JNIEnv *env, jclass cla)
{
jobjectArray cmdProps = JVM_GetProperties(env);
return cmdProps;
}
/*
* The following three functions implement setter methods for
* java . lang . System . { in , out , err } . They are natively implemented
* because they violate the semantics of the language ( i . e . set final
* variable ) .
*/
JNIEXPORT void JNICALL
Java_java_lang_System_setIn0(JNIEnv *env, jclass cla, jobject stream)
{
jfieldID fid =
(*env)->GetStaticFieldID(env,cla,"in" ,"Ljava/io/InputStream;" );
if (fid == 0 )
return ;
(*env)->SetStaticObjectField(env,cla,fid,stream);
}
JNIEXPORT void JNICALL
Java_java_lang_System_setOut0(JNIEnv *env, jclass cla, jobject stream)
{
jfieldID fid =
(*env)->GetStaticFieldID(env,cla,"out" ,"Ljava/io/PrintStream;" );
if (fid == 0 )
return ;
(*env)->SetStaticObjectField(env,cla,fid,stream);
}
JNIEXPORT void JNICALL
Java_java_lang_System_setErr0(JNIEnv *env, jclass cla, jobject stream)
{
jfieldID fid =
(*env)->GetStaticFieldID(env,cla,"err" ,"Ljava/io/PrintStream;" );
if (fid == 0 )
return ;
(*env)->SetStaticObjectField(env,cla,fid,stream);
}
static void cpchars(jchar *dst, char *src, int n)
{
int i;
for (i = 0 ; i < n; i++) {
dst[i] = src[i];
}
}
JNIEXPORT jstring JNICALL
Java_java_lang_System_mapLibraryName(JNIEnv *env, jclass ign, jstring libname)
{
int len;
int prefix_len = (int ) strlen(JNI_LIB_PREFIX);
int suffix_len = (int ) strlen(JNI_LIB_SUFFIX);
jchar chars[256 ];
if (libname == NULL) {
JNU_ThrowNullPointerException(env, 0 );
return NULL;
}
len = (*env)->GetStringLength(env, libname);
if (len > 240 ) {
JNU_ThrowIllegalArgumentException(env, "name too long" );
return NULL;
}
cpchars(chars, JNI_LIB_PREFIX, prefix_len);
(*env)->GetStringRegion(env, libname, 0 , len, chars + prefix_len);
len += prefix_len;
cpchars(chars + len, JNI_LIB_SUFFIX, suffix_len);
len += suffix_len;
return (*env)->NewString(env, chars, len);
}
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