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Diffstat (limited to 'id.server/src/at/gv/egovernment/moa/id/util/InOrderServletRequestWrapper.java')
| -rw-r--r-- | id.server/src/at/gv/egovernment/moa/id/util/InOrderServletRequestWrapper.java | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/id.server/src/at/gv/egovernment/moa/id/util/InOrderServletRequestWrapper.java b/id.server/src/at/gv/egovernment/moa/id/util/InOrderServletRequestWrapper.java deleted file mode 100644 index 78d0a0db0..000000000 --- a/id.server/src/at/gv/egovernment/moa/id/util/InOrderServletRequestWrapper.java +++ /dev/null @@ -1,345 +0,0 @@ -/* - * Created on 01.10.2004 - * - * @author rschamberger - * $ID$ - */ -package at.gv.egovernment.moa.id.util; - -import java.io.IOException; -import java.util.Enumeration; -import java.util.Hashtable; -import java.util.StringTokenizer; -import java.util.Vector; - -import javax.servlet.ServletInputStream; -import javax.servlet.http.HttpServletRequest; -import javax.servlet.ServletContext; -import javax.servlet.http.HttpServletRequestWrapper; - -import at.gv.egovernment.moa.util.URLDecoder; - -/** - * Special ServletRequestWrapper class which provides a more precise implementation of the getParameter* - * family. This implementation cares about the order of the parameters from Query String and HTTP POST - * Body. Use this as Filter class for Servlets which such needs. - * - * @author Rudolf Schamberger - * @version $Id$ - */ -public class InOrderServletRequestWrapper extends HttpServletRequestWrapper { - - /** - * standard encoding used to decode the URL string. - */ - // - public static final String DEFAULT_CHARACTER_ENCODING = "ISO-8859-1"; - /** - * Vector that stores the order of the query paramters - */ - private Vector queryParamOrder; - - /** - * Hashtable that stores the content of the query paramters - */ - private Hashtable queryParameters; - - /** - * Vector that stores the order of the HTTP body paramters - */ - private Vector bodyParamOrder; - - /** - * Hashtable that stores the content of the HTTP body paramters - */ - private Hashtable bodyParameters; - - /** - * ServletContext - */ - private ServletContext context; - - /** - * Identifier used to identify query parameters - */ - public static final int QUERY_PARAM = 1; - - /** - * Identifier used to identify HTTP body parameters - */ - public static final int BODY_PARAM = 2; - - /** - * @see HttpServletRequestWrapper - */ - public InOrderServletRequestWrapper(final HttpServletRequest request, final ServletContext sContext) { - super(request); - this.context = sContext; - } - - /** - * parses the Query and if availlable also HTTP POST parameters - * - * @param req a <code>HttpServletRequest</code> which should be parsed - */ - protected final void parseParameters(final HttpServletRequest req) - { - queryParamOrder = new Vector(); - queryParameters = new Hashtable(); - bodyParamOrder = new Vector(); - bodyParameters = new Hashtable(); - - //Insert code for Query string parsing - String rawQuery = req.getQueryString(); - queryParameters = tokenize(queryParameters, queryParamOrder, rawQuery, DEFAULT_CHARACTER_ENCODING); - - //analyze HTTP Post body parameters - if (req.getMethod().equalsIgnoreCase("POST")) - { - //get body encoding - String enc = req.getCharacterEncoding(); - if (enc == null) enc = DEFAULT_CHARACTER_ENCODING; - - if (req.getContentType().equals("application/x-www-form-urlencoded")) - { - try - { - bodyParameters = parsePostData(bodyParameters, req.getContentLength(), req.getInputStream(), enc); - } - catch (IOException e) - { - context.log("could not open input stream of reqest \n" + e.toString()); - } - } - else - { - //TODO add multipart code - context.log( - "ERROR other Content-Types than 'application/x-www-form-urlencoded' not supported!"); - } - - }// end POST - } - - /** - * parses the HTTP POST parameters - * - * @param ht parameter Hashtable to put parameters in. - * @param length of content - * @param instream the ServletInputStream of the request - * @param encoding encoding of the instream - * - * @return the Hashtable with the parsed data - */ - private Hashtable parsePostData(Hashtable ht, final int length, final ServletInputStream instream, - final String encoding) - { - int inputLen, offset; - byte[] postedBytes = null; - boolean dataRemaining = true; - String postedBody; - - StringBuffer sb = new StringBuffer(); - - if (length <= 0) - { - return null; - } - - postedBytes = new byte[length]; - try - { - offset = 0; - while (dataRemaining) - { - inputLen = instream.read(postedBytes, offset, length - offset); - if (inputLen <= 0) - { - throw new IOException("read error during reading the HTTP POST body"); - } - offset += inputLen; - if ((length - offset) == 0) - { - dataRemaining = false; - } - } - } - catch (IOException e) - { - System.out.println("Exception =" + e); - return null; - } - - postedBody = new String(postedBytes); - Hashtable ht2 = tokenize(ht, bodyParamOrder, postedBody, encoding); - return ht2; - } - - - /** - * tokenizes parameter strings - * - * @param ht parameter Hashtable to put parameters in. - * @param order Vector in which the order of the tokenized parameters will be stored. - * @param parameterString String to tokenize. - * @param encoding which will be used to decode the parameterString. - * - * @return the Hashtable with the parsed data - */ - private Hashtable tokenize(Hashtable ht, Vector order, final String parameterString, final String encoding) - { - String[] valArray = null; - - if (null == parameterString) return ht; - - StringTokenizer st = new StringTokenizer(parameterString, "&"); - - String key = null; - String val = null; - - while (st.hasMoreTokens()) - { - String pair = (String) st.nextToken(); - int pos = pair.indexOf('='); - if (pos == -1) - { - throw new IllegalArgumentException(); - } - try - { - key = URLDecoder.decode(pair.substring(0, pos), encoding); - val = URLDecoder.decode(pair.substring(pos + 1, pair.length()), encoding); - } - catch (Exception e) - { - throw new IllegalArgumentException(); - } - if (ht.containsKey(key)) - { - String oldVals[] = (String[]) 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); - order.addElement(key); - } - return ht; - - } - - /** - * Returns the value of a request parameter as a <code>String</code>, or <code>null</code> if the - * parameter does not exist. Request parameters are extra information sent with the request. For HTTP - * servlets, parameters are contained in the query string or posted form data. - * - * <p> - * You should only use this method when you are sure the parameter has only one value. If the parameter - * might have more than one value, use {@link #getParameterValues}. - * - * <p> - * If you use this method with a multivalued parameter, the value returned is equal to the first value in - * the array returned by <code>getParameterValues</code>. - * - * <p> - * If the parameter data was sent in the request body, such as occurs with an HTTP POST request, then - * reading the body directly via {@link#getInputStream} or {@link #getReader}can interfere with the - * execution of this method. - * - * @param name a <code>String</code> containing the name of the parameter whose value is requested - * - * @return a <code>String</code> representing the single value of the parameter - * - * @see #getParameterValues - * - */ - public final String getParameter(final String name) { - String val = getParameter(name, QUERY_PARAM); - return (null != val) ? val : getParameter(name, BODY_PARAM); - } - - /** - * Returns the value of a request parameter as a <code>String</code>, or <code>null</code> if the - * parameter does not exist. - * - * @param name a <code>String</code> containing the name of the parameter whose value is requested - * @param parameterType type of parameter - * @see at.gv.egovernment.moa.id.util.ParametersInOrderServlet#QUERY_PARAM - * and @see at.gv.egovernment.moa.id.util.ParametersInOrderServlet#BODY_PARAM - * @see getParameterValues(String name); - * @return value of the (single) parameter or null if not availlable - **/ - public final String getParameter(final String name, final int parameterType) - { - - Hashtable parameters = (parameterType == QUERY_PARAM) ? queryParameters : bodyParameters; - String[] vals = (String[]) parameters.get(name); - if (vals == null) - { - return null; - } - return vals[0]; - } - - - /** - * Returns an array of <code>String</code> objects containing all of the values the given request - * parameter has, or <code>null</code> if the parameter does not exist. - * - * <p> - * If the parameter has a single value, the array has a length of 1. - * - * @param name a <code>String</code> containing the name of the parameter whose value is requested - * @param parameterType type of parameter - * @see at.gv.egovernment.moa.id.util.ParametersInOrderServlet#QUERY_PARAM - * and @see at.gv.egovernment.moa.id.util.ParametersInOrderServlet#BODY_PARAM - * @return an array of <code>String</code> objects containing the parameter's values or null - * - * @see #getParameter - */ - public final String getParameterValues(final String name, final int parameterType) - { - Hashtable parameters = (parameterType == QUERY_PARAM) ? queryParameters : bodyParameters; - String[] vals = (String[]) parameters.get(name); - if (vals == null) - { - return null; - } - String vallist = vals[0]; - for (int i = 1; i < vals.length; i++) - { - vallist = vallist + "," + vals[i]; - } - return vallist; - } - - /** - * - * Returns an <code>Enumeration</code> of <code>String</code> objects containing the names of the - * parameters contained in this request. If the request has no parameters, the method returns an empty - * <code>Enumeration</code>. - * @param parameterType type of parameter - * @see at.gv.egovernment.moa.id.util.ParametersInOrderServlet#QUERY_PARAM - * and @see at.gv.egovernment.moa.id.util.ParametersInOrderServlet#BODY_PARAM - * - * @return an <code>Enumeration</code> of <code>String</code> objects, each <code>String</code> - * containing the name of a request parameter; or an empty <code>Enumeration</code> if the - * request has no parameters - * - */ - public final Enumeration getParameterNames(final int parameterType) - { - if (QUERY_PARAM == parameterType) - return queryParamOrder.elements(); - else - return bodyParamOrder.elements(); - } -} //End InOrderServletRequestWrapper
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