--- /dev/null
+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements. See the NOTICE file distributed with
+* this work for additional information regarding copyright ownership.
+* The ASF licenses this file to You under the Apache License, Version 2.0
+* (the "License"); you may not use this file except in compliance with
+* the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package javax.servlet.http;
+
+import java.io.IOException;
+import java.util.Hashtable;
+import java.util.ResourceBundle;
+import java.util.StringTokenizer;
+
+import javax.servlet.ServletInputStream;
+
+/**
+ * @deprecated As of Java(tm) Servlet API 2.3.
+ * These methods were only useful
+ * with the default encoding and have been moved
+ * to the request interfaces.
+ */
+@SuppressWarnings("dep-ann") // Spec API does not use @Deprecated
+public class HttpUtils {
+
+ private static final String LSTRING_FILE =
+ "javax.servlet.http.LocalStrings";
+ private static final ResourceBundle lStrings =
+ ResourceBundle.getBundle(LSTRING_FILE);
+
+
+ /**
+ * Constructs an empty <code>HttpUtils</code> object.
+ *
+ */
+ public HttpUtils() {
+ // NOOP
+ }
+
+
+ /**
+ *
+ * Parses a query string passed from the client to the
+ * server and builds a <code>HashTable</code> object
+ * with key-value pairs.
+ * The query string should be in the form of a string
+ * packaged by the GET or POST method, that is, it
+ * should have key-value pairs in the form <i>key=value</i>,
+ * with each pair separated from the next by a & character.
+ *
+ * <p>A key can appear more than once in the query string
+ * with different values. However, the key appears only once in
+ * the hashtable, with its value being
+ * an array of strings containing the multiple values sent
+ * by the query string.
+ *
+ * <p>The keys and values in the hashtable are stored in their
+ * decoded form, so
+ * any + characters are converted to spaces, and characters
+ * sent in hexadecimal notation (like <i>%xx</i>) are
+ * converted to ASCII characters.
+ *
+ * @param s a string containing the query to be parsed
+ *
+ * @return a <code>HashTable</code> object built
+ * from the parsed key-value pairs
+ *
+ * @exception IllegalArgumentException if the query string
+ * is invalid
+ *
+ */
+ public static Hashtable<String,String[]> parseQueryString(String s) {
+
+ String valArray[] = null;
+
+ if (s == null) {
+ throw new IllegalArgumentException();
+ }
+ Hashtable<String,String[]> ht = new Hashtable<>();
+ StringBuilder sb = new StringBuilder();
+ StringTokenizer st = new StringTokenizer(s, "&");
+ while (st.hasMoreTokens()) {
+ String pair = st.nextToken();
+ int pos = pair.indexOf('=');
+ if (pos == -1) {
+ // XXX
+ // should give more detail about the illegal argument
+ throw new IllegalArgumentException();
+ }
+ String key = parseName(pair.substring(0, pos), sb);
+ String val = parseName(pair.substring(pos+1, pair.length()), sb);
+ if (ht.containsKey(key)) {
+ String oldVals[] = ht.get(key);
+ valArray = new String[oldVals.length + 1];
+ for (int i = 0; i < oldVals.length; i++)
+ valArray[i] = oldVals[i];
+ valArray[oldVals.length] = val;
+ } else {
+ valArray = new String[1];
+ valArray[0] = val;
+ }
+ ht.put(key, valArray);
+ }
+ return ht;
+ }
+
+
+ /**
+ *
+ * Parses data from an HTML form that the client sends to
+ * the server using the HTTP POST method and the
+ * <i>application/x-www-form-urlencoded</i> MIME type.
+ *
+ * <p>The data sent by the POST method contains key-value
+ * pairs. A key can appear more than once in the POST data
+ * with different values. However, the key appears only once in
+ * the hashtable, with its value being
+ * an array of strings containing the multiple values sent
+ * by the POST method.
+ *
+ * <p>The keys and values in the hashtable are stored in their
+ * decoded form, so
+ * any + characters are converted to spaces, and characters
+ * sent in hexadecimal notation (like <i>%xx</i>) are
+ * converted to ASCII characters.
+ *
+ *
+ *
+ * @param len an integer specifying the length,
+ * in characters, of the
+ * <code>ServletInputStream</code>
+ * object that is also passed to this
+ * method
+ *
+ * @param in the <code>ServletInputStream</code>
+ * object that contains the data sent
+ * from the client
+ *
+ * @return a <code>HashTable</code> object built
+ * from the parsed key-value pairs
+ *
+ *
+ * @exception IllegalArgumentException if the data
+ * sent by the POST method is invalid
+ *
+ */
+ public static Hashtable<String,String[]> parsePostData(int len,
+ ServletInputStream in) {
+ // XXX
+ // should a length of 0 be an IllegalArgumentException
+
+ // cheap hack to return an empty hash
+ if (len <=0)
+ return new Hashtable<>();
+
+ if (in == null) {
+ throw new IllegalArgumentException();
+ }
+
+ // Make sure we read the entire POSTed body.
+ byte[] postedBytes = new byte [len];
+ try {
+ int offset = 0;
+
+ do {
+ int inputLen = in.read (postedBytes, offset, len - offset);
+ if (inputLen <= 0) {
+ String msg = lStrings.getString("err.io.short_read");
+ throw new IllegalArgumentException (msg);
+ }
+ offset += inputLen;
+ } while ((len - offset) > 0);
+
+ } catch (IOException e) {
+ throw new IllegalArgumentException(e.getMessage(), e);
+ }
+
+ // XXX we shouldn't assume that the only kind of POST body
+ // is FORM data encoded using ASCII or ISO Latin/1 ... or
+ // that the body should always be treated as FORM data.
+ try {
+ String postedBody = new String(postedBytes, 0, len, "8859_1");
+ return parseQueryString(postedBody);
+ } catch (java.io.UnsupportedEncodingException e) {
+ // XXX function should accept an encoding parameter & throw this
+ // exception. Otherwise throw something expected.
+ throw new IllegalArgumentException(e.getMessage(), e);
+ }
+ }
+
+
+ /*
+ * Parse a name in the query string.
+ */
+ private static String parseName(String s, StringBuilder sb) {
+ sb.setLength(0);
+ for (int i = 0; i < s.length(); i++) {
+ char c = s.charAt(i);
+ switch (c) {
+ case '+':
+ sb.append(' ');
+ break;
+ case '%':
+ try {
+ sb.append((char) Integer.parseInt(s.substring(i+1, i+3),
+ 16));
+ i += 2;
+ } catch (NumberFormatException e) {
+ // XXX
+ // need to be more specific about illegal arg
+ throw new IllegalArgumentException();
+ } catch (StringIndexOutOfBoundsException e) {
+ String rest = s.substring(i);
+ sb.append(rest);
+ if (rest.length()==2)
+ i++;
+ }
+
+ break;
+ default:
+ sb.append(c);
+ break;
+ }
+ }
+ return sb.toString();
+ }
+
+
+ /**
+ *
+ * Reconstructs the URL the client used to make the request,
+ * using information in the <code>HttpServletRequest</code> object.
+ * The returned URL contains a protocol, server name, port
+ * number, and server path, but it does not include query
+ * string parameters.
+ *
+ * <p>Because this method returns a <code>StringBuffer</code>,
+ * not a string, you can modify the URL easily, for example,
+ * to append query parameters.
+ *
+ * <p>This method is useful for creating redirect messages
+ * and for reporting errors.
+ *
+ * @param req a <code>HttpServletRequest</code> object
+ * containing the client's request
+ *
+ * @return a <code>StringBuffer</code> object containing
+ * the reconstructed URL
+ *
+ */
+ public static StringBuffer getRequestURL (HttpServletRequest req) {
+ StringBuffer url = new StringBuffer ();
+ String scheme = req.getScheme ();
+ int port = req.getServerPort ();
+ String urlPath = req.getRequestURI();
+
+ url.append (scheme); // http, https
+ url.append ("://");
+ url.append (req.getServerName ());
+ if ((scheme.equals ("http") && port != 80)
+ || (scheme.equals ("https") && port != 443)) {
+ url.append (':');
+ url.append (req.getServerPort ());
+ }
+
+ url.append(urlPath);
+ return url;
+ }
+}
+
+
+
projects / gigi.git / blobdiff