jspi/src/main/java/de/lohndirekt/print/IppHttpConnection.java

   1 /**
   2  * Copyright (C) 2003 <a href="http://www.lohndirekt.de/">lohndirekt.de</a>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19 package de.lohndirekt.print;
  20
  21 import java.io.IOException;
  22 import java.io.InputStream;
  23 import java.net.HttpURLConnection;
  24 import java.net.URI;
  25 import java.net.URISyntaxException;
  26 import java.util.logging.Level;
  27 import java.util.logging.Logger;
  28
  29 import org.apache.commons.httpclient.Credentials;
  30 import org.apache.commons.httpclient.HttpClient;
  31 import org.apache.commons.httpclient.HttpException;
  32 import org.apache.commons.httpclient.UsernamePasswordCredentials;
  33 import org.apache.commons.httpclient.methods.EntityEnclosingMethod;
  34 import org.apache.commons.httpclient.methods.PostMethod;
  35
  36 import de.lohndirekt.print.exception.AuthenticationException;
  37
  38
  39 /**
  40  * simple facade / abstraction layer to "commons httpclient"
  41  *
  42  * @author sefftinge
  43  *
  44  */
  45 class IppHttpConnection implements IppConnection {
  46
  47     private Logger log = Logger.getLogger(this.getClass().getName());
  48
  49     private HttpClient httpConn;
  50
  51     private PostMethod method;
  52
  53     /**
  54      * @param uri
  55      * @param user
  56      * @param passwd
  57      * @param useStream
  58      */
  59     public IppHttpConnection(URI uri, String user, String passwd) {
  60         try {
  61             httpConn = new HttpClient();
  62             method = new PostMethod(toHttpURI(uri).toString());
  63             method.addRequestHeader("Content-type", "application/ipp");
  64             method.addRequestHeader("Accept", "text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2");
  65             method.setRequestContentLength(EntityEnclosingMethod.CONTENT_LENGTH_AUTO);
  66             // authentication
  67             if (user != null && user.trim().length() > 0) {
  68                 if (log.isLoggable(Level.FINER)) {
  69                     log.log(Level.SEVERE, "Using username: "+user+" , passwd.length "+passwd.length());
  70                 }
  71                 method.setDoAuthentication(true);
  72                 Credentials creds = new UsernamePasswordCredentials(user,
  73                         passwd);
  74                 httpConn.getState().setCredentials(null,
  75                         toHttpURI(uri).getHost(), creds);
  76
  77             }
  78
  79         } catch (Exception e) {
  80             log.log(Level.SEVERE, e.getMessage(), e);
  81         }
  82     }
  83
  84
  85     /**
  86      * @return content of the response
  87      * @throws IOException
  88      */
  89     public InputStream getIppResponse() throws IOException {
  90         return method.getResponseBodyAsStream();
  91     }
  92
  93     /**
  94      * @return the statuscode of last request
  95      * @throws IOException
  96      */
  97     public int getStatusCode() throws IOException {
  98         return method.getStatusCode();
  99     }
 100
 101     private static URI toHttpURI(URI uri) {
 102         if (uri.getScheme().equals("ipp")) {
 103             String uriString = uri.toString().replaceFirst("ipp", "http");
 104             // TODO remove this hack!
 105 //            uriString = uriString.replaceAll("(\\d{1,3}\\.){3}\\d{1,3}:\\d{1,}", "127.0.0.1:631");
 106             // endof hack
 107             try {
 108                 uri = new URI(uriString);
 109             } catch (URISyntaxException e) {
 110                 throw new RuntimeException("toHttpURI buggy? : uri was " + uri);
 111             }
 112         }
 113         return uri;
 114     }
 115
 116     /**
 117      * @param stream
 118      */
 119     public void setIppRequest(InputStream stream) {
 120         method.setRequestBody(stream);
 121     }
 122
 123     public boolean execute() throws HttpException, IOException {
 124         if (this.method.validate()) {
 125             httpConn.executeMethod(method);
 126             if (this.getStatusCode()==HttpURLConnection.HTTP_UNAUTHORIZED) {
 127                 throw new AuthenticationException(method.getStatusText());
 128             }
 129             return true;
 130         } else {
 131             return false;
 132         }
 133     }
 134
 135 }