| /* |
| * Copyright (c) 2003, 2004, 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 <stdlib.h> |
| #include <string.h> |
| #include "jni.h" |
| #include "jni_util.h" |
| |
| #ifdef __APPLE__ |
| #include <crt_externs.h> |
| #define environ (*_NSGetEnviron()) |
| #endif |
| #include <nativehelper/JNIHelp.h> |
| |
| #define NATIVE_METHOD(className, functionName, signature) \ |
| { #functionName, signature, (void*)(className ## _ ## functionName) } |
| |
| JNIEXPORT jobjectArray JNICALL |
| ProcessEnvironment_environ(JNIEnv *env, jclass ign) |
| { |
| /* This is one of the rare times it's more portable to declare an |
| * external symbol explicitly, rather than via a system header. |
| * The declaration is standardized as part of UNIX98, but there is |
| * no standard (not even de-facto) header file where the |
| * declaration is to be found. See: |
| * http://www.opengroup.org/onlinepubs/007908799/xbd/envvar.html */ |
| #ifndef __APPLE__ |
| extern char ** environ; /* environ[i] looks like: VAR=VALUE\0 */ |
| #endif |
| |
| jsize count = 0; |
| jsize i, j; |
| jobjectArray result; |
| jclass byteArrCls = (*env)->FindClass(env, "[B"); |
| |
| for (i = 0; environ[i]; i++) { |
| /* Ignore corrupted environment variables */ |
| if (strchr(environ[i], '=') != NULL) |
| count++; |
| } |
| |
| result = (*env)->NewObjectArray(env, 2*count, byteArrCls, 0); |
| if (result == NULL) return NULL; |
| |
| for (i = 0, j = 0; environ[i]; i++) { |
| const char * varEnd = strchr(environ[i], '='); |
| /* Ignore corrupted environment variables */ |
| if (varEnd != NULL) { |
| jbyteArray var, val; |
| const char * valBeg = varEnd + 1; |
| jsize varLength = varEnd - environ[i]; |
| jsize valLength = strlen(valBeg); |
| var = (*env)->NewByteArray(env, varLength); |
| if (var == NULL) return NULL; |
| val = (*env)->NewByteArray(env, valLength); |
| if (val == NULL) return NULL; |
| (*env)->SetByteArrayRegion(env, var, 0, varLength, |
| (jbyte*) environ[i]); |
| (*env)->SetByteArrayRegion(env, val, 0, valLength, |
| (jbyte*) valBeg); |
| (*env)->SetObjectArrayElement(env, result, 2*j , var); |
| (*env)->SetObjectArrayElement(env, result, 2*j+1, val); |
| (*env)->DeleteLocalRef(env, var); |
| (*env)->DeleteLocalRef(env, val); |
| j++; |
| } |
| } |
| |
| return result; |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| NATIVE_METHOD(ProcessEnvironment, environ, "()[[B"), |
| }; |
| |
| void register_java_lang_ProcessEnvironment(JNIEnv* env) { |
| jniRegisterNativeMethods(env, "java/lang/ProcessEnvironment", gMethods, NELEM(gMethods)); |
| } |