J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | #include <stdlib.h> |
| 27 | #include <string.h> |
| 28 | #include "jni.h" |
| 29 | #include "jni_util.h" |
| 30 | |
| 31 | JNIEXPORT jobjectArray JNICALL |
| 32 | Java_java_lang_ProcessEnvironment_environ(JNIEnv *env, jclass ign) |
| 33 | { |
| 34 | /* This is one of the rare times it's more portable to declare an |
| 35 | * external symbol explicitly, rather than via a system header. |
| 36 | * The declaration is standardized as part of UNIX98, but there is |
| 37 | * no standard (not even de-facto) header file where the |
| 38 | * declaration is to be found. See: |
| 39 | * http://www.opengroup.org/onlinepubs/007908799/xbd/envvar.html */ |
| 40 | extern char ** environ; /* environ[i] looks like: VAR=VALUE\0 */ |
| 41 | |
| 42 | jsize count = 0; |
| 43 | jsize i, j; |
| 44 | jobjectArray result; |
| 45 | jclass byteArrCls = (*env)->FindClass(env, "[B"); |
| 46 | |
| 47 | for (i = 0; environ[i]; i++) { |
| 48 | /* Ignore corrupted environment variables */ |
| 49 | if (strchr(environ[i], '=') != NULL) |
| 50 | count++; |
| 51 | } |
| 52 | |
| 53 | result = (*env)->NewObjectArray(env, 2*count, byteArrCls, 0); |
| 54 | if (result == NULL) return NULL; |
| 55 | |
| 56 | for (i = 0, j = 0; environ[i]; i++) { |
| 57 | const char * varEnd = strchr(environ[i], '='); |
| 58 | /* Ignore corrupted environment variables */ |
| 59 | if (varEnd != NULL) { |
| 60 | jbyteArray var, val; |
| 61 | const char * valBeg = varEnd + 1; |
| 62 | jsize varLength = varEnd - environ[i]; |
| 63 | jsize valLength = strlen(valBeg); |
| 64 | var = (*env)->NewByteArray(env, varLength); |
| 65 | if (var == NULL) return NULL; |
| 66 | val = (*env)->NewByteArray(env, valLength); |
| 67 | if (val == NULL) return NULL; |
| 68 | (*env)->SetByteArrayRegion(env, var, 0, varLength, |
| 69 | (jbyte*) environ[i]); |
| 70 | (*env)->SetByteArrayRegion(env, val, 0, valLength, |
| 71 | (jbyte*) valBeg); |
| 72 | (*env)->SetObjectArrayElement(env, result, 2*j , var); |
| 73 | (*env)->SetObjectArrayElement(env, result, 2*j+1, val); |
| 74 | (*env)->DeleteLocalRef(env, var); |
| 75 | (*env)->DeleteLocalRef(env, val); |
| 76 | j++; |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | return result; |
| 81 | } |