| /* |
| * Copyright (c) 2013, 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 <windows.h> |
| #include "jni.h" |
| #include "net_util.h" |
| #include "sun_net_PortConfig.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct portrange { |
| int lower; |
| int higher; |
| }; |
| |
| static int getPortRange(struct portrange *range) |
| { |
| OSVERSIONINFO ver; |
| ver.dwOSVersionInfoSize = sizeof(ver); |
| GetVersionEx(&ver); |
| |
| /* Check for major version 5 or less = Windows XP/2003 or older */ |
| if (ver.dwMajorVersion <= 5) { |
| LONG ret; |
| HKEY hKey; |
| range->lower = 1024; |
| range->higher = 4999; |
| |
| /* check registry to see if upper limit was raised */ |
| ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, |
| "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters", |
| 0, KEY_READ, (PHKEY)&hKey |
| ); |
| if (ret == ERROR_SUCCESS) { |
| DWORD maxuserport; |
| ULONG ulType; |
| DWORD dwLen = sizeof(maxuserport); |
| ret = RegQueryValueEx(hKey, "MaxUserPort", NULL, &ulType, |
| (LPBYTE)&maxuserport, &dwLen); |
| RegCloseKey(hKey); |
| if (ret == ERROR_SUCCESS) { |
| range->higher = maxuserport; |
| } |
| } |
| } else { |
| /* There doesn't seem to be an API to access this. "MaxUserPort" |
| * is affected, but is not sufficient to determine. |
| * so we just use the defaults, which are less likely to change |
| */ |
| range->lower = 49152; |
| range->higher = 65535; |
| } |
| return 0; |
| } |
| |
| /* |
| * Class: sun_net_PortConfig |
| * Method: getLower0 |
| * Signature: ()I |
| */ |
| JNIEXPORT jint JNICALL Java_sun_net_PortConfig_getLower0 |
| (JNIEnv *env, jclass clazz) |
| { |
| struct portrange range; |
| getPortRange(&range); |
| return range.lower; |
| } |
| |
| /* |
| * Class: sun_net_PortConfig |
| * Method: getUpper0 |
| * Signature: ()I |
| */ |
| JNIEXPORT jint JNICALL Java_sun_net_PortConfig_getUpper0 |
| (JNIEnv *env, jclass clazz) |
| { |
| struct portrange range; |
| getPortRange(&range); |
| return range.higher; |
| } |
| #ifdef __cplusplus |
| } |
| #endif |