| /* |
| * Copyright (c) 2002, 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 <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <errno.h> |
| |
| #ifdef __solaris__ |
| #include <sys/systeminfo.h> |
| #include <strings.h> |
| #endif |
| |
| #ifdef __linux__ |
| #include <string.h> |
| #endif |
| |
| #include "jni.h" |
| |
| #ifndef MAXDNAME |
| #define MAXDNAME 1025 |
| #endif |
| |
| |
| /* |
| * Class: sun_net_dns_ResolverConfgurationImpl |
| * Method: localDomain0 |
| * Signature: ()Ljava/lang/String; |
| */ |
| JNIEXPORT jstring JNICALL |
| Java_sun_net_dns_ResolverConfigurationImpl_localDomain0(JNIEnv *env, jclass cls) |
| { |
| /* |
| * On Solaris the LOCALDOMAIN environment variable has absolute |
| * priority. |
| */ |
| #ifdef __solaris__ |
| { |
| char *cp = getenv("LOCALDOMAIN"); |
| if (cp != NULL) { |
| jstring s = (*env)->NewStringUTF(env, cp); |
| return s; |
| } |
| } |
| #endif |
| return (jstring)NULL; |
| } |
| |
| /* |
| * Class: sun_net_dns_ResolverConfgurationImpl |
| * Method: loadConfig0 |
| * Signature: ()Ljava/lang/String; |
| */ |
| JNIEXPORT jstring JNICALL |
| Java_sun_net_dns_ResolverConfigurationImpl_fallbackDomain0(JNIEnv *env, jclass cls) |
| { |
| char buf[MAXDNAME]; |
| |
| /* |
| * On Solaris if domain or search directives aren't specified |
| * in /etc/resolv.conf then sysinfo or gethostname is used to |
| * determine the domain name. |
| * |
| * On Linux if domain or search directives aren't specified |
| * then gethostname is used. |
| */ |
| |
| #ifdef __solaris__ |
| { |
| int ret = sysinfo(SI_SRPC_DOMAIN, buf, sizeof(buf)); |
| |
| if ((ret > 0) && (ret<sizeof(buf))) { |
| char *cp; |
| jstring s; |
| |
| if (buf[0] == '+') { |
| buf[0] = '.'; |
| } |
| cp = strchr(buf, '.'); |
| if (cp == NULL) { |
| s = (*env)->NewStringUTF(env, buf); |
| } else { |
| s = (*env)->NewStringUTF(env, cp+1); |
| } |
| return s; |
| } |
| } |
| #endif |
| |
| if (gethostname(buf, sizeof(buf)) == 0) { |
| char *cp; |
| |
| /* gethostname doesn't null terminate if insufficient space */ |
| buf[sizeof(buf)-1] = '\0'; |
| |
| cp = strchr(buf, '.'); |
| if (cp != NULL) { |
| jstring s = (*env)->NewStringUTF(env, cp+1); |
| return s; |
| } |
| } |
| |
| return (jstring)NULL; |
| } |