1 /*
2 * Copyright (c) 2005, 2019, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.security.jgss.wrapper;
27
28 import java.util.HashMap;
29 import java.security.Provider;
30 import java.security.AccessController;
31 import java.security.PrivilegedAction;
32 import org.ietf.jgss.Oid;
33 import sun.security.action.PutAllAction;
34 import static sun.security.util.SecurityConstants.PROVIDER_VER;
35
36 /**
37 * Defines the Sun NativeGSS provider for plugging in the
38 * native GSS mechanisms to Java GSS.
39 *
40 * List of supported mechanisms depends on the local
41 * machine configuration.
42 *
43 * @author Yu-Ching Valerie Peng
44 */
45
46 public final class SunNativeProvider extends Provider {
47
48 private static final long serialVersionUID = -238911724858694204L;
49
50 private static final String NAME = "SunNativeGSS";
51 private static final String INFO = "Sun Native GSS provider";
52 private static final String MF_CLASS =
53 "sun.security.jgss.wrapper.NativeGSSFactory";
54 private static final HashMap<String, String> MECH_MAP;
55 static final Provider INSTANCE;
56 static boolean DEBUG;
57 static void debug(String message) {
58 if (DEBUG) {
59 if (message == null) {
60 throw new NullPointerException();
61 }
62 System.out.println(NAME + ": " + message);
63 }
64 }
65
66 static {
67 MECH_MAP =
68 AccessController.doPrivileged(
69 new PrivilegedAction<>() {
70 public HashMap<String, String> run() {
71 DEBUG = Boolean.parseBoolean(
72 System.getProperty("sun.security.nativegss.debug"));
73 try {
74 System.loadLibrary("j2gss");
75 } catch (Error err) {
76 debug("No j2gss library found!");
77 if (DEBUG) err.printStackTrace();
78 return null;
79 }
80 String[] gssLibs;
81 String defaultLib
82 = System.getProperty("sun.security.jgss.lib");
83 if (defaultLib == null || defaultLib.trim().equals("")) {
84 String osname = System.getProperty("os.name");
85 if (osname.startsWith("Linux")) {
86 gssLibs = new String[]{
87 "libgssapi.so",
88 "libgssapi_krb5.so",
89 "libgssapi_krb5.so.2",
90 };
91 } else if (osname.contains("OS X")) {
92 gssLibs = new String[]{
93 "libgssapi_krb5.dylib",
94 "/usr/lib/sasl2/libgssapiv2.2.so",
95 };
96 } else if (osname.contains("Windows")) {
97 // Full path needed, DLL is in jre/bin
98 gssLibs = new String[]{ System.getProperty("java.home")
99 + "\\bin\\sspi_bridge.dll" };
100 } else {
101 gssLibs = new String[0];
102 }
103 } else {
104 gssLibs = new String[]{ defaultLib };
105 }
106 for (String libName: gssLibs) {
107 if (GSSLibStub.init(libName, DEBUG)) {
108 debug("Loaded GSS library: " + libName);
109 Oid[] mechs = GSSLibStub.indicateMechs();
110 HashMap<String,String> map = new HashMap<>();
111 for (int i = 0; i < mechs.length; i++) {
112 debug("Native MF for " + mechs[i]);
113 map.put("GssApiMechanism." + mechs[i],
114 MF_CLASS);
115 }
116 return map;
117 }
118 }
119 return null;
120 }
121 });
122 // initialize INSTANCE after MECH_MAP is constructed
123 INSTANCE = new SunNativeProvider();
124 }
125
126 public SunNativeProvider() {
127 /* We are the Sun NativeGSS provider */
128 super(NAME, PROVIDER_VER, INFO);
129
130 if (MECH_MAP != null) {
131 AccessController.doPrivileged(new PutAllAction(this, MECH_MAP));
132 }
133 }
134 }