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| 1 | /* | ||
| 2 | * Copyright (c) 1999, 2010, 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 com.sun.security.auth; | ||
| 27 | |||
| 28 | import java.net.URL; | ||
| 29 | import java.util.*; | ||
| 30 | import java.security.CodeSource; | ||
| 31 | import java.security.Principal; | ||
| 32 | import java.security.cert.Certificate; | ||
| 33 | import java.lang.reflect.Constructor; | ||
| 34 | |||
| 35 | import javax.security.auth.Subject; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * <p> This <code>SubjectCodeSource</code> class contains | ||
| 39 | * a <code>URL</code>, signer certificates, and either a <code>Subject</code> | ||
| 40 | * (that represents the <code>Subject</code> in the current | ||
| 41 | * <code>AccessControlContext</code>), | ||
| 42 | * or a linked list of Principals/PrincipalComparators | ||
| 43 | * (that represent a "subject" in a <code>Policy</code>). | ||
| 44 | * | ||
| 45 | */ | ||
| 46 | class SubjectCodeSource extends CodeSource implements java.io.Serializable { | ||
| 47 | |||
| 48 | private static final long serialVersionUID = 6039418085604715275L; | ||
| 49 | |||
| 50 | private static final java.util.ResourceBundle rb = | ||
| 51 | java.security.AccessController.doPrivileged | ||
| 52 | (new java.security.PrivilegedAction<java.util.ResourceBundle>() { | ||
| 53 | public java.util.ResourceBundle run() { | ||
| 54 | return (java.util.ResourceBundle.getBundle | ||
| 55 | ("sun.security.util.AuthResources")); | ||
| 56 | } | ||
| 57 | }); | ||
| 58 | |||
| 59 | private Subject subject; | ||
| 60 | private LinkedList<PolicyParser.PrincipalEntry> principals; | ||
| 61 | private static final Class[] PARAMS = { String.class }; | ||
| 62 | private static final sun.security.util.Debug debug = | ||
| 63 | sun.security.util.Debug.getInstance("auth", "\t[Auth Access]"); | ||
| 64 | private ClassLoader sysClassLoader; | ||
| 65 | |||
| 66 | /** | ||
| 67 | * Creates a new <code>SubjectCodeSource</code> | ||
| 68 | * with the given <code>Subject</code>, principals, <code>URL</code>, | ||
| 69 | * and signers (Certificates). The <code>Subject</code> | ||
| 70 | * represents the <code>Subject</code> associated with the current | ||
| 71 | * <code>AccessControlContext</code>. | ||
| 72 | * The Principals are given as a <code>LinkedList</code> | ||
| 73 | * of <code>PolicyParser.PrincipalEntry</code> objects. | ||
| 74 | * Typically either a <code>Subject</code> will be provided, | ||
| 75 | * or a list of <code>principals</code> will be provided | ||
| 76 | * (not both). | ||
| 77 | * | ||
| 78 | * <p> | ||
| 79 | * | ||
| 80 | * @param subject the <code>Subject</code> associated with this | ||
| 81 | * <code>SubjectCodeSource</code> <p> | ||
| 82 | * | ||
| 83 | * @param url the <code>URL</code> associated with this | ||
| 84 | * <code>SubjectCodeSource</code> <p> | ||
| 85 | * | ||
| 86 | * @param certs the signers associated with this | ||
| 87 | * <code>SubjectCodeSource</code> <p> | ||
| 88 | */ | ||
| 89 | SubjectCodeSource(Subject subject, | ||
| 90 | LinkedList<PolicyParser.PrincipalEntry> principals, | ||
| 91 | URL url, Certificate[] certs) { | ||
| 92 | |||
| 93 | super(url, certs); | ||
| 94 | this.subject = subject; | ||
| 95 | this.principals = (principals == null ? | ||
| 96 | new LinkedList<PolicyParser.PrincipalEntry>() : | ||
| 97 | new LinkedList<PolicyParser.PrincipalEntry>(principals)); | ||
| 98 | sysClassLoader = java.security.AccessController.doPrivileged | ||
| 99 | (new java.security.PrivilegedAction<ClassLoader>() { | ||
| 100 | public ClassLoader run() { | ||
| 101 | return ClassLoader.getSystemClassLoader(); | ||
| 102 | } | ||
| 103 | }); | ||
| 104 | } | ||
| 105 | |||
| 106 | /** | ||
| 107 | * Get the Principals associated with this <code>SubjectCodeSource</code>. | ||
| 108 | * The Principals are retrieved as a <code>LinkedList</code> | ||
| 109 | * of <code>PolicyParser.PrincipalEntry</code> objects. | ||
| 110 | * | ||
| 111 | * <p> | ||
| 112 | * | ||
| 113 | * @return the Principals associated with this | ||
| 114 | * <code>SubjectCodeSource</code> as a <code>LinkedList</code> | ||
| 115 | * of <code>PolicyParser.PrincipalEntry</code> objects. | ||
| 116 | */ | ||
| 117 | LinkedList<PolicyParser.PrincipalEntry> getPrincipals() { | ||
| 118 | return principals; | ||
| 119 | } | ||
| 120 | |||
| 121 | /** | ||
| 122 | * Get the <code>Subject</code> associated with this | ||
| 123 | * <code>SubjectCodeSource</code>. The <code>Subject</code> | ||
| 124 | * represents the <code>Subject</code> associated with the | ||
| 125 | * current <code>AccessControlContext</code>. | ||
| 126 | * | ||
| 127 | * <p> | ||
| 128 | * | ||
| 129 | * @return the <code>Subject</code> associated with this | ||
| 130 | * <code>SubjectCodeSource</code>. | ||
| 131 | */ | ||
| 132 | Subject getSubject() { | ||
| 133 | return subject; | ||
| 134 | } | ||
| 135 | |||
| 136 | /** | ||
| 137 | * Returns true if this <code>SubjectCodeSource</code> object "implies" | ||
| 138 | * the specified <code>CodeSource</code>. | ||
| 139 | * More specifically, this method makes the following checks. | ||
| 140 | * If any fail, it returns false. If they all succeed, it returns true. | ||
| 141 | * | ||
| 142 | * <p> | ||
| 143 | * <ol> | ||
| 144 | * <li> The provided codesource must not be <code>null</code>. | ||
| 145 | * <li> codesource must be an instance of <code>SubjectCodeSource</code>. | ||
| 146 | * <li> super.implies(codesource) must return true. | ||
| 147 | * <li> for each principal in this codesource's principal list: | ||
| 148 | * <ol> | ||
| 149 | * <li> if the principal is an instanceof | ||
| 150 | * <code>PrincipalComparator</code>, then the principal must | ||
| 151 | * imply the provided codesource's <code>Subject</code>. | ||
| 152 | * <li> if the principal is not an instanceof | ||
| 153 | * <code>PrincipalComparator</code>, then the provided | ||
| 154 | * codesource's <code>Subject</code> must have an | ||
| 155 | * associated <code>Principal</code>, <i>P</i>, where | ||
| 156 | * P.getClass().getName equals principal.principalClass, | ||
| 157 | * and P.getName() equals principal.principalName. | ||
| 158 | * </ol> | ||
| 159 | * </ol> | ||
| 160 | * | ||
| 161 | * <p> | ||
| 162 | * | ||
| 163 | * @param codesource the <code>CodeSource</code> to compare against. | ||
| 164 | * | ||
| 165 | * @return true if this <code>SubjectCodeSource</code> implies the | ||
| 166 | * the specified <code>CodeSource</code>. | ||
| 167 | */ | ||
| 168 | public boolean implies(CodeSource codesource) { | ||
| 169 | |||
| 170 | LinkedList<PolicyParser.PrincipalEntry> subjectList = null; | ||
| 171 | |||
| 172 | if (codesource == null || | ||
| 173 | !(codesource instanceof SubjectCodeSource) || | ||
| 174 | !(super.implies(codesource))) { | ||
| 175 | |||
| 176 | if (debug != null) | ||
| 177 | debug.println("\tSubjectCodeSource.implies: FAILURE 1"); | ||
| 178 | return false; | ||
| 179 | } | ||
| 180 | |||
| 181 | SubjectCodeSource that = (SubjectCodeSource)codesource; | ||
| 182 | |||
| 183 | // if the principal list in the policy "implies" | ||
| 184 | // the Subject associated with the current AccessControlContext, | ||
| 185 | // then return true | ||
| 186 | |||
| 187 | if (this.principals == null) { | ||
| 188 | if (debug != null) | ||
| 189 | debug.println("\tSubjectCodeSource.implies: PASS 1"); | ||
| 190 | return true; | ||
| 191 | } | ||
| 192 | |||
| 193 | if (that.getSubject() == null || | ||
| 194 | that.getSubject().getPrincipals().size() == 0) { | ||
| 195 | if (debug != null) | ||
| 196 | debug.println("\tSubjectCodeSource.implies: FAILURE 2"); | ||
| 197 | return false; | ||
| 198 | } | ||
| 199 | |||
| 200 | ListIterator<PolicyParser.PrincipalEntry> li = | ||
| 201 | this.principals.listIterator(0); | ||
| 202 | while (li.hasNext()) { | ||
| 203 | PolicyParser.PrincipalEntry pppe = li.next(); | ||
| 204 | try { | ||
| 205 | |||
| 206 | // handle PrincipalComparators | ||
| 207 | |||
| 208 | Class principalComparator = Class.forName(pppe.principalClass, | ||
| 209 | true, | ||
| 210 | sysClassLoader); | ||
| 211 | Constructor c = principalComparator.getConstructor(PARAMS); | ||
| 212 | PrincipalComparator pc = | ||
| 213 | (PrincipalComparator)c.newInstance | ||
| 214 | (new Object[] { pppe.principalName }); | ||
| 215 | |||
| 216 | if (!pc.implies(that.getSubject())) { | ||
| 217 | if (debug != null) | ||
| 218 | debug.println("\tSubjectCodeSource.implies: FAILURE 3"); | ||
| 219 | return false; | ||
| 220 | } else { | ||
| 221 | if (debug != null) | ||
| 222 | debug.println("\tSubjectCodeSource.implies: PASS 2"); | ||
| 223 | return true; | ||
| 224 | } | ||
| 225 | } catch (Exception e) { | ||
| 226 | |||
| 227 | // no PrincipalComparator, simply compare Principals | ||
| 228 | |||
| 229 | if (subjectList == null) { | ||
| 230 | |||
| 231 | if (that.getSubject() == null) { | ||
| 232 | if (debug != null) | ||
| 233 | debug.println("\tSubjectCodeSource.implies: " + | ||
| 234 | "FAILURE 4"); | ||
| 235 | return false; | ||
| 236 | } | ||
| 237 | Iterator<Principal> i = | ||
| 238 | that.getSubject().getPrincipals().iterator(); | ||
| 239 | |||
| 240 | subjectList = new LinkedList<PolicyParser.PrincipalEntry>(); | ||
| 241 | while (i.hasNext()) { | ||
| 242 | Principal p = i.next(); | ||
| 243 | PolicyParser.PrincipalEntry spppe = | ||
| 244 | new PolicyParser.PrincipalEntry | ||
| 245 | (p.getClass().getName(), p.getName()); | ||
| 246 | subjectList.add(spppe); | ||
| 247 | } | ||
| 248 | } | ||
| 249 | |||
| 250 | if (!subjectListImpliesPrincipalEntry(subjectList, pppe)) { | ||
| 251 | if (debug != null) | ||
| 252 | debug.println("\tSubjectCodeSource.implies: FAILURE 5"); | ||
| 253 | return false; | ||
| 254 | } | ||
| 255 | } | ||
| 256 | } | ||
| 257 | |||
| 258 | if (debug != null) | ||
| 259 | debug.println("\tSubjectCodeSource.implies: PASS 3"); | ||
| 260 | return true; | ||
| 261 | } | ||
| 262 | |||
| 263 | /** | ||
| 264 | * This method returns, true, if the provided <i>subjectList</i> | ||
| 265 | * "contains" the <code>Principal</code> specified | ||
| 266 | * in the provided <i>pppe</i> argument. | ||
| 267 | * | ||
| 268 | * Note that the provided <i>pppe</i> argument may have | ||
| 269 | * wildcards (*) for the <code>Principal</code> class and name, | ||
| 270 | * which need to be considered. | ||
| 271 | * | ||
| 272 | * <p> | ||
| 273 | * | ||
| 274 | * @param subjectList a list of PolicyParser.PrincipalEntry objects | ||
| 275 | * that correspond to all the Principals in the Subject currently | ||
| 276 | * on this thread's AccessControlContext. <p> | ||
| 277 | * | ||
| 278 | * @param pppe the Principals specified in a grant entry. | ||
| 279 | * | ||
| 280 | * @return true if the provided <i>subjectList</i> "contains" | ||
| 281 | * the <code>Principal</code> specified in the provided | ||
| 282 | * <i>pppe</i> argument. | ||
| 283 | */ | ||
| 284 | private boolean subjectListImpliesPrincipalEntry( | ||
| 285 | LinkedList<PolicyParser.PrincipalEntry> subjectList, | ||
| 286 | PolicyParser.PrincipalEntry pppe) { | ||
| 287 | |||
| 288 | ListIterator<PolicyParser.PrincipalEntry> li = | ||
| 289 | subjectList.listIterator(0); | ||
| 290 | while (li.hasNext()) { | ||
| 291 | PolicyParser.PrincipalEntry listPppe = li.next(); | ||
| 292 | |||
| 293 | if (pppe.principalClass.equals | ||
| 294 | (PolicyParser.PrincipalEntry.WILDCARD_CLASS) || | ||
| 295 | pppe.principalClass.equals | ||
| 296 | (listPppe.principalClass)) { | ||
| 297 | |||
| 298 | if (pppe.principalName.equals | ||
| 299 | (PolicyParser.PrincipalEntry.WILDCARD_NAME) || | ||
| 300 | pppe.principalName.equals | ||
| 301 | (listPppe.principalName)) | ||
| 302 | return true; | ||
| 303 | } | ||
| 304 | } | ||
| 305 | return false; | ||
| 306 | } | ||
| 307 | |||
| 308 | /** | ||
| 309 | * Tests for equality between the specified object and this | ||
| 310 | * object. Two <code>SubjectCodeSource</code> objects are considered equal | ||
| 311 | * if their locations are of identical value, if the two sets of | ||
| 312 | * Certificates are of identical values, and if the | ||
| 313 | * Subjects are equal, and if the PolicyParser.PrincipalEntry values | ||
| 314 | * are of identical values. It is not required that | ||
| 315 | * the Certificates or PolicyParser.PrincipalEntry values | ||
| 316 | * be in the same order. | ||
| 317 | * | ||
| 318 | * <p> | ||
| 319 | * | ||
| 320 | * @param obj the object to test for equality with this object. | ||
| 321 | * | ||
| 322 | * @return true if the objects are considered equal, false otherwise. | ||
| 323 | */ | ||
| 324 | public boolean equals(Object obj) { | ||
| 325 | |||
| 326 | if (obj == this) | ||
| 327 | return true; | ||
| 328 | |||
| 329 | if (super.equals(obj) == false) | ||
| 330 | return false; | ||
| 331 | |||
| 332 | if (!(obj instanceof SubjectCodeSource)) | ||
| 333 | return false; | ||
| 334 | |||
| 335 | SubjectCodeSource that = (SubjectCodeSource)obj; | ||
| 336 | |||
| 337 | // the principal lists must match | ||
| 338 | try { | ||
| 339 | if (this.getSubject() != that.getSubject()) | ||
| 340 | return false; | ||
| 341 | } catch (SecurityException se) { | ||
| 342 | return false; | ||
| 343 | } | ||
| 344 | |||
| 345 | if ((this.principals == null && that.principals != null) || | ||
| 346 | (this.principals != null && that.principals == null)) | ||
| 347 | return false; | ||
| 348 | |||
| 349 | if (this.principals != null && that.principals != null) { | ||
| 350 | if (!this.principals.containsAll(that.principals) || | ||
| 351 | !that.principals.containsAll(this.principals)) | ||
| 352 | |||
| 353 | return false; | ||
| 354 | } | ||
| 355 | |||
| 356 | return true; | ||
| 357 | } | ||
| 358 | |||
| 359 | /** | ||
| 360 | * Return a hashcode for this <code>SubjectCodeSource</code>. | ||
| 361 | * | ||
| 362 | * <p> | ||
| 363 | * | ||
| 364 | * @return a hashcode for this <code>SubjectCodeSource</code>. | ||
| 365 | */ | ||
| 366 | public int hashCode() { | ||
| 367 | return super.hashCode(); | ||
| 368 | } | ||
| 369 | |||
| 370 | /** | ||
| 371 | * Return a String representation of this <code>SubjectCodeSource</code>. | ||
| 372 | * | ||
| 373 | * <p> | ||
| 374 | * | ||
| 375 | * @return a String representation of this <code>SubjectCodeSource</code>. | ||
| 376 | */ | ||
| 377 | public String toString() { | ||
| 378 | String returnMe = super.toString(); | ||
| 379 | if (getSubject() != null) { | ||
| 380 | if (debug != null) { | ||
| 381 | final Subject finalSubject = getSubject(); | ||
| 382 | returnMe = returnMe + "\n" + | ||
| 383 | java.security.AccessController.doPrivileged | ||
| 384 | (new java.security.PrivilegedAction<String>() { | ||
| 385 | public String run() { | ||
| 386 | return finalSubject.toString(); | ||
| 387 | } | ||
| 388 | }); | ||
| 389 | } else { | ||
| 390 | returnMe = returnMe + "\n" + getSubject().toString(); | ||
| 391 | } | ||
| 392 | } | ||
| 393 | if (principals != null) { | ||
| 394 | ListIterator<PolicyParser.PrincipalEntry> li = | ||
| 395 | principals.listIterator(); | ||
| 396 | while (li.hasNext()) { | ||
| 397 | PolicyParser.PrincipalEntry pppe = li.next(); | ||
| 398 | returnMe = returnMe + rb.getString("NEWLINE") + | ||
| 399 | pppe.principalClass + " " + | ||
| 400 | pppe.principalName; | ||
| 401 | } | ||
| 402 | } | ||
| 403 | return returnMe; | ||
| 404 | } | ||
| 405 | } | ||