--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/net/HttpURLPermission.java Wed May 15 15:01:59 2013 +0100
@@ -0,0 +1,406 @@
+/*
+ * 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.
+ */
+
+package java.net;
+
+import java.io.ObjectInputStream;
+import java.io.IOException;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.security.Permission;
+
+/**
+ * Represents permission to access a resource or set of resources defined by a
+ * given http or https url, and for a given set of user-settable request methods
+ * and request headers. The <i>name</i> of the permission is the url string.
+ * The <i>actions</i> string is a concatenation of the request methods and headers.
+ * The range of method and header names is not restricted by this class.
+ * <p><b>The url</b><p>
+ * The url string is also used to instantiate a {@link URI} object which is
+ * used for comparison with other HttpURLPermission instances. Therefore, any
+ * references in this specification to url, mean this URI object.
+ * The path component of the url comprises a sequence of path segments, separated
+ * by '/' characters. The path is specified in a similar way to the path
+ * in {@link java.io.FilePermission}. There are three different ways
+ * as the following examples show:
+ * <table border>
+ * <tr><th>Example url</th><th>Description</th></tr>
+ * <tr><td style="white-space:nowrap;">http://www.oracle.com/a/b/c.html</td>
+ * <td>A url which identifies a specific (single) resource</td>
+ * </tr>
+ * <tr><td>http://www.oracle.com/a/b/*</td>
+ * <td>The '*' character refers to all resources in the same "directory" - in
+ * other words all resources with the same number of path components, and
+ * which only differ in the final path component, represented by the '*'.
+ * </td>
+ * </tr>
+ * <tr><td>http://www.oracle.com/a/b/-</li>
+ * <td>The '-' character refers to all resources recursively below the
+ * preceding path (eg. http://www.oracle.com/a/b/c/d/e.html matches this
+ * example).
+ * </td>
+ * </tr>
+ * </table>
+ * <p>
+ * The '*' and '-' may only be specified in the final segment of a path and must be
+ * the only character in that segment. Any query or fragment components of the
+ * url are ignored when constructing HttpURLPermissions.
+ * <p>
+ * As a special case, urls of the form, "http:*" or "https:*" are accepted to
+ * mean any url of the given scheme.
+ * <p><b>The actions string</b><p>
+ * The actions string of a HttpURLPermission is a concatenation of the <i>method list</i>
+ * and the <i>request headers list</i>. These are lists of the permitted HTTP request
+ * methods and permitted request headers of the permission (respectively). The two lists
+ * are separated by a colon ':' character and elements of each list are comma separated.
+ * Some examples are:
+ * <pre>
+ * "POST,GET,DELETE"
+ * "GET:X-Foo-Request,X-Bar-Request"
+ * "POST,GET:Header1,Header2"
+ * </pre>
+ * The first example specifies the methods: POST, GET and DELETE, but no request headers.
+ * The second example specifies one request method and two headers. The third
+ * example specifies two request methods, and two headers.
+ * <p>
+ * The colon separator need not be present if the request headers list is empty.
+ * No white-space is permitted in the actions string. The action strings supplied to
+ * the HttpURLPermission constructors are case-insensitive and are normalized by converting
+ * method names to upper-case and header names to the form defines in RFC2616 (lower case
+ * with initial letter of each word capitalized). Either list can contain a wild-card '*'
+ * character which signifies all request methods or headers respectively.
+ * <p>
+ * Note. Depending on the context of use, some request methods and headers may be permitted
+ * at all times, and others may not be permitted at any time. For example, the
+ * HTTP protocol handler might disallow certain headers such as Content-Length
+ * from being set by application code, regardless of whether the security policy
+ * in force, permits it.
+ *
+ * @since 1.8
+ */
+public final class HttpURLPermission extends Permission {
+
+ private static final long serialVersionUID = -2702463814894478682L;
+
+ private transient URI uri;
+ private transient List<String> methods;
+ private transient List<String> requestHeaders;
+
+ // serialized field
+ private String actions;
+
+ /**
+ * Creates a new HttpURLPermission from a url string and which permits the given
+ * request methods and user-settable request headers.
+ * The name of the permission is its url string. Only the scheme, authority
+ * and path components of the url are used. Any fragment or query
+ * components are ignored. The permissions action string is as specified above.
+ *
+ * @param url the url string
+ *
+ * @param actions the actions string
+ *
+ * @throws IllegalArgumentException if url does not result in a valid {@link URI},
+ * its scheme is not http or https, or if actions contains white-space.
+ */
+ public HttpURLPermission(String url, String actions) {
+ super(url);
+ init(actions);
+ }
+
+ private void init(String actions) {
+ URI uri = parseURI(getName());
+ int colon = actions.indexOf(':');
+ if (actions.lastIndexOf(':') != colon) {
+ throw new IllegalArgumentException("invalid actions string");
+ }
+
+ String methods, headers;
+ if (colon == -1) {
+ methods = actions;
+ headers = "";
+ } else {
+ methods = actions.substring(0, colon);
+ headers = actions.substring(colon+1);
+ }
+
+ List<String> l = normalizeMethods(methods);
+ Collections.sort(l);
+ this.methods = Collections.unmodifiableList(l);
+
+ l = normalizeHeaders(headers);
+ Collections.sort(l);
+ this.requestHeaders = Collections.unmodifiableList(l);
+
+ this.actions = actions();
+ this.uri = uri;
+ }
+
+ /**
+ * Creates a HttpURLPermission with the given url string and unrestricted
+ * methods and request headers by invoking the two argument
+ * constructor as follows: HttpURLPermission(url, "*:*")
+ *
+ * @throws IllegalArgumentException if url does not result in a valid {@link URI}
+ */
+ public HttpURLPermission(String url) {
+ this(url, "*:*");
+ }
+
+ /**
+ * Returns the normalized method list and request
+ * header list, in the form:
+ * <pre>
+ * "method-names : header-names"
+ * </pre>
+ * <p>
+ * where method-names is the list of methods separated by commas
+ * and header-names is the list of permitted headers separated by commas.
+ * There is no white space in the returned String. If header-names is empty
+ * then the colon separator will not be present.
+ */
+ public String getActions() {
+ return actions;
+ }
+
+ /**
+ * Checks if this HttpURLPermission implies the given permission.
+ * Specifically, the following checks are done as if in the
+ * following sequence:
+ * <p><ul>
+ * <li>if 'p' is not an instance of HttpURLPermission return false</li>
+ * <li>if any of p's methods are not in this's method list, and if
+ * this's method list is not equal to "*", then return false.</li>
+ * <li>if any of p's headers are not in this's request header list, and if
+ * this's request header list is not equal to "*", then return false.</li>
+ * <li>if this's url is equal to p's url , then return true</li>
+ * <li>if this's url scheme is not equal to p's url scheme return false</li>
+ * <li>if the scheme specific part of this's url is '*' return true</li>
+ * <li>if this's url authority is not equal to p's url authority
+ * return false</li>
+ * <li>if the path or paths specified by p's url are contained in the
+ * set of paths specified by this's url, then return true
+ * <li>otherwise, return false</li>
+ * </ol>
+ * <p>
+ * Some examples of how paths are matched are shown below:
+ * <p>
+ * <table border>
+ * <tr><th>this's path</th><th>p's path</th><th>match</th></tr>
+ * <tr><td>/a/b</td><td>/a/b</td><td>yes</td></tr>
+ * <tr><td>/a/b/*</td><td>/a/b/c</td><td>yes</td></tr>
+ * <tr><td>/a/b/*</td><td>/a/b/c/d</td><td>no</td></tr>
+ * <tr><td>/a/b/-</td><td>/a/b/c/d</td><td>yes</td></tr>
+ * <tr><td>/a/b/-</td><td>/a/b/c/d/e</td><td>yes</td></tr>
+ * <tr><td>/a/b/-</td><td>/a/b/c/*</td><td>yes</td></tr>
+ * <tr><td>/a/b/*</td><td>/a/b/c/-</td><td>no</td></tr>
+ * </table>
+ */
+ public boolean implies(Permission p) {
+ if (! (p instanceof HttpURLPermission)) {
+ return false;
+ }
+
+ HttpURLPermission that = (HttpURLPermission)p;
+
+ if (!this.methods.get(0).equals("*") &&
+ Collections.indexOfSubList(this.methods, that.methods) == -1) {
+ return false;
+ }
+
+ if (this.requestHeaders.isEmpty() && !that.requestHeaders.isEmpty()) {
+ return false;
+ }
+
+ if (!this.requestHeaders.isEmpty() &&
+ !this.requestHeaders.get(0).equals("*") &&
+ Collections.indexOfSubList(this.requestHeaders,
+ that.requestHeaders) == -1) {
+ return false;
+ }
+
+ if (this.uri.equals(that.uri)) {
+ return true;
+ }
+
+ if (!this.uri.getScheme().equals(that.uri.getScheme())) {
+ return false;
+ }
+
+ if (this.uri.getSchemeSpecificPart().equals("*")) {
+ return true;
+ }
+
+ String thisAuthority = this.uri.getAuthority();
+
+ if (thisAuthority != null &&
+ !thisAuthority.equals(that.uri.getAuthority())) {
+ return false;
+ }
+
+ String thispath = this.uri.getPath();
+ String thatpath = that.uri.getPath();
+
+ if (thispath.endsWith("/-")) {
+ String thisprefix = thispath.substring(0, thispath.length() - 1);
+ return thatpath.startsWith(thisprefix);
+ }
+
+ if (thispath.endsWith("/*")) {
+ String thisprefix = thispath.substring(0, thispath.length() - 1);
+ if (!thatpath.startsWith(thisprefix)) {
+ return false;
+ }
+ String thatsuffix = thatpath.substring(thisprefix.length());
+ // suffix must not contain '/' chars
+ if (thatsuffix.indexOf('/') != -1) {
+ return false;
+ }
+ if (thatsuffix.equals("-")) {
+ return false;
+ }
+ return true;
+ }
+ return false;
+ }
+
+
+ /**
+ * Returns true if, this.getActions().equals(p.getActions())
+ * and p's url equals this's url. Returns false otherwise.
+ */
+ public boolean equals(Object p) {
+ if (!(p instanceof HttpURLPermission)) {
+ return false;
+ }
+ HttpURLPermission that = (HttpURLPermission)p;
+ return this.getActions().equals(that.getActions()) &&
+ this.uri.equals(that.uri);
+ }
+
+ /**
+ * Returns a hashcode calculated from the hashcode of the
+ * actions String and the url
+ */
+ public int hashCode() {
+ return getActions().hashCode() + uri.hashCode();
+ }
+
+
+ private List<String> normalizeMethods(String methods) {
+ List<String> l = new ArrayList<>();
+ StringBuilder b = new StringBuilder();
+ for (int i=0; i<methods.length(); i++) {
+ char c = methods.charAt(i);
+ if (c == ',') {
+ String s = b.toString();
+ if (s.length() > 0)
+ l.add(s);
+ b = new StringBuilder();
+ } else if (c == ' ' || c == '\t') {
+ throw new IllegalArgumentException("white space not allowed");
+ } else {
+ if (c >= 'a' && c <= 'z') {
+ c += 'A' - 'a';
+ }
+ b.append(c);
+ }
+ }
+ String s = b.toString();
+ if (s.length() > 0)
+ l.add(s);
+ return l;
+ }
+
+ private List<String> normalizeHeaders(String headers) {
+ List<String> l = new ArrayList<>();
+ StringBuilder b = new StringBuilder();
+ boolean capitalizeNext = true;
+ for (int i=0; i<headers.length(); i++) {
+ char c = headers.charAt(i);
+ if (c >= 'a' && c <= 'z') {
+ if (capitalizeNext) {
+ c += 'A' - 'a';
+ capitalizeNext = false;
+ }
+ b.append(c);
+ } else if (c == ' ' || c == '\t') {
+ throw new IllegalArgumentException("white space not allowed");
+ } else if (c == '-') {
+ capitalizeNext = true;
+ b.append(c);
+ } else if (c == ',') {
+ String s = b.toString();
+ if (s.length() > 0)
+ l.add(s);
+ b = new StringBuilder();
+ capitalizeNext = true;
+ } else {
+ capitalizeNext = false;
+ b.append(c);
+ }
+ }
+ String s = b.toString();
+ if (s.length() > 0)
+ l.add(s);
+ return l;
+ }
+
+ private URI parseURI(String url) {
+ URI u = URI.create(url);
+ String scheme = u.getScheme();
+ if (!(scheme.equalsIgnoreCase("http") ||
+ scheme.equalsIgnoreCase("https"))) {
+ throw new IllegalArgumentException ("unexpected URL scheme");
+ }
+ if (!u.getSchemeSpecificPart().equals("*")) {
+ u = URI.create(scheme + "://" + u.getAuthority() + u.getPath());
+ }
+ return u;
+ }
+
+ private String actions() {
+ StringBuilder b = new StringBuilder();
+ for (String s : methods) {
+ b.append(s);
+ }
+ b.append(":");
+ for (String s : requestHeaders) {
+ b.append(s);
+ }
+ return b.toString();
+ }
+ /**
+ * restore the state of this object from stream
+ */
+ private void readObject(ObjectInputStream s)
+ throws IOException, ClassNotFoundException {
+ ObjectInputStream.GetField fields = s.readFields();
+ String actions = (String)fields.get("actions", null);
+
+ init(actions);
+ }
+}