|
| 1 | +/* |
| 2 | + * Copyright (c) 2024, 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. |
| 8 | + * |
| 9 | + * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | + * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | + * accompanied this code). |
| 14 | + * |
| 15 | + * You should have received a copy of the GNU General Public License version |
| 16 | + * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | + * |
| 19 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | + * or visit www.oracle.com if you need additional information or have any |
| 21 | + * questions. |
| 22 | + */ |
| 23 | + |
| 24 | +import java.io.*; |
| 25 | +import java.nio.file.Files; |
| 26 | +import java.nio.file.Paths; |
| 27 | +import java.util.regex.Matcher; |
| 28 | +import java.util.regex.Pattern; |
| 29 | + |
| 30 | +import jdk.test.lib.Asserts; |
| 31 | +import sun.security.krb5.Config; |
| 32 | + |
| 33 | +/* |
| 34 | + * @test |
| 35 | + * @bug 8333772 |
| 36 | + * @summary check krb5.conf reading on default and realm-specific values |
| 37 | + * @library /test/lib |
| 38 | + */ |
| 39 | +public class RealmSpecificValues { |
| 40 | + |
| 41 | + static DebugMatcher cm = new DebugMatcher(); |
| 42 | + |
| 43 | + public static void main(String[] args) throws Exception { |
| 44 | + System.setProperty("sun.security.krb5.debug", "true"); |
| 45 | + System.setProperty("java.security.krb5.conf", "alternative-krb5.conf"); |
| 46 | + |
| 47 | + // Defaults |
| 48 | + writeConf(-1, -1, -1, -1, -1, -1); |
| 49 | + test(true, 3, 30000); |
| 50 | + |
| 51 | + // Below has settings. For each setting we provide 3 cases: |
| 52 | + // 1. Set in defaults, 2, set in realms, 3, both |
| 53 | + |
| 54 | + // udp = 0 is useful |
| 55 | + writeConf(0, -1, -1, -1, -1, -1); |
| 56 | + test(false, 3, 30000); |
| 57 | + writeConf(-1, -1, -1, 0, -1, -1); |
| 58 | + test(false, 3, 30000); |
| 59 | + writeConf(1, -1, -1, 0, -1, -1); |
| 60 | + test(false, 3, 30000); |
| 61 | + |
| 62 | + // max_retries = 0 is ignored |
| 63 | + writeConf(-1, 0, -1, -1, -1, -1); |
| 64 | + test(true, 3, 30000); |
| 65 | + writeConf(-1, -1, -1, -1, 0, -1); |
| 66 | + test(true, 3, 30000); |
| 67 | + writeConf(-1, 6, -1, -1, 0, -1); // Note: 0 is ignored, it does not reset to default |
| 68 | + test(true, 6, 30000); |
| 69 | + |
| 70 | + // max_retries = 1 is useful |
| 71 | + writeConf(-1, 1, -1, -1, -1, -1); |
| 72 | + test(true, 1, 30000); |
| 73 | + writeConf(-1, -1, -1, -1, 1, -1); |
| 74 | + test(true, 1, 30000); |
| 75 | + writeConf(-1, 3, -1, -1, 1, -1); |
| 76 | + test(true, 1, 30000); |
| 77 | + |
| 78 | + // timeout = 0 is ignored |
| 79 | + writeConf(-1, -1, 0, -1, -1, -1); |
| 80 | + test(true, 3, 30000); |
| 81 | + writeConf(-1, -1, -1, -1, -1, 0); |
| 82 | + test(true, 3, 30000); |
| 83 | + writeConf(-1, -1, 10000, -1, -1, 0); |
| 84 | + test(true, 3, 10000); |
| 85 | + |
| 86 | + // timeout > 0 is useful |
| 87 | + writeConf(-1, -1, 10000, -1, -1, -1); |
| 88 | + test(true, 3, 10000); |
| 89 | + writeConf(-1, -1, -1, -1, -1, 10000); |
| 90 | + test(true, 3, 10000); |
| 91 | + writeConf(-1, -1, 20000, -1, -1, 10000); |
| 92 | + test(true, 3, 10000); |
| 93 | + } |
| 94 | + |
| 95 | + static void writeConf(int limit, int retries, int timeout, |
| 96 | + int limitR, int retriesR, int timeoutR) throws Exception { |
| 97 | + |
| 98 | + String inDefaults = ""; |
| 99 | + if (limit >= 0) inDefaults += "udp_preference_limit = " + limit + "\n"; |
| 100 | + if (retries >= 0) inDefaults += "max_retries = " + retries + "\n"; |
| 101 | + if (timeout >= 0) inDefaults += "kdc_timeout = " + timeout + "\n"; |
| 102 | + |
| 103 | + String inRealm = ""; |
| 104 | + if (limitR >= 0) inRealm += "udp_preference_limit = " + limitR + "\n"; |
| 105 | + if (retriesR >= 0) inRealm += "max_retries = " + retriesR + "\n"; |
| 106 | + if (timeoutR >= 0) inRealm += "kdc_timeout = " + timeoutR + "\n"; |
| 107 | + |
| 108 | + String conf = "[libdefaults]\n" + |
| 109 | + "default_realm = " + OneKDC.REALM + "\n" + |
| 110 | + inDefaults + |
| 111 | + "\n" + |
| 112 | + "[realms]\n" + |
| 113 | + OneKDC.REALM + " = {\n" + |
| 114 | + "kdc = " + OneKDC.KDCHOST + ":12345\n" + |
| 115 | + inRealm + |
| 116 | + "}\n"; |
| 117 | + |
| 118 | + Files.writeString(Paths.get("alternative-krb5.conf"), conf); |
| 119 | + } |
| 120 | + |
| 121 | + static void test(boolean isUDP, int retries, int timeout) throws Exception { |
| 122 | + |
| 123 | + PrintStream oldErr = System.err; |
| 124 | + ByteArrayOutputStream bo = new ByteArrayOutputStream(); |
| 125 | + System.setErr(new PrintStream(bo)); |
| 126 | + try { |
| 127 | + Config.refresh(); |
| 128 | + Context.fromUserPass(OneKDC.USER, OneKDC.PASS, false); |
| 129 | + } catch (Exception e) { |
| 130 | + // will happen |
| 131 | + } finally { |
| 132 | + System.setErr(oldErr); |
| 133 | + } |
| 134 | + |
| 135 | + String[] lines = new String(bo.toByteArray()).split("\n"); |
| 136 | + for (String line: lines) { |
| 137 | + if (cm.match(line)) { |
| 138 | + System.out.println(line); |
| 139 | + Asserts.assertEQ(cm.isUDP(), isUDP); |
| 140 | + Asserts.assertEQ(cm.timeout(), timeout); |
| 141 | + Asserts.assertEQ(cm.retries(), retries); |
| 142 | + return; |
| 143 | + } |
| 144 | + } |
| 145 | + Asserts.fail("Should not reach here"); |
| 146 | + } |
| 147 | + |
| 148 | + /** |
| 149 | + * A helper class to match the krb5 debug output: |
| 150 | + * >>> KrbKdcReq send: kdc=kdc.rabbit.hole TCP:12345, timeout=30000, |
| 151 | + * number of retries =3, #bytes=141 |
| 152 | + */ |
| 153 | + static class DebugMatcher { |
| 154 | + |
| 155 | + static final Pattern re = Pattern.compile( |
| 156 | + ">>> KrbKdcReq send: kdc=\\S+ (TCP|UDP):\\d+, " + |
| 157 | + "timeout=(\\d+), number of retries\\s*=(\\d+)"); |
| 158 | + |
| 159 | + Matcher matcher; |
| 160 | + |
| 161 | + boolean match(String line) { |
| 162 | + matcher = re.matcher(line); |
| 163 | + return matcher.find(); |
| 164 | + } |
| 165 | + |
| 166 | + boolean isUDP() { |
| 167 | + return matcher.group(1).equals("UDP"); |
| 168 | + } |
| 169 | + |
| 170 | + int timeout() { |
| 171 | + return Integer.parseInt(matcher.group(2)); |
| 172 | + } |
| 173 | + |
| 174 | + int retries() { |
| 175 | + return Integer.parseInt(matcher.group(3)); |
| 176 | + } |
| 177 | + } |
| 178 | +} |
0 commit comments