DeviceUtils


1   /*
2    * Copyright (c) 1999-2001 Lutris Technologies, Inc. All Rights
3    * Reserved.
4    * 
5    * This source code file is distributed by Lutris Technologies, Inc. for
6    * use only by licensed users of product(s) that include this source
7    * file. Use of this source file or the software that uses it is covered
8    * by the terms and conditions of the Lutris Enhydra Development License
9    * Agreement included with this product.
10   * 
11   * This Software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
12   * ANY KIND, either express or implied. See the License for the specific terms
13   * governing rights and limitations under the License.
14   * 
15   * Contributor(s):
16   * 
17   * $Id: DeviceUtils.java,v 1.2 2005/01/21 13:19:09 slobodan Exp $
18   */
19  
20  package com.lutris.airsent.presentation;
21  
22  import com.lutris.airsent.presentation.*;
23  import com.lutris.appserver.server.httpPresentation.*;
24  import javax.servlet.http.HttpServletRequest  ;
25  import org.enhydra.xml.xmlc.*;
26  import org.w3c.dom.*;
27  /**
28   *  Provides utilities for outputing and forewarding to devices. 
29   * 
30   * 
31   * 
32   */
33  public class DeviceUtils {
34      /**
35       * Method that determines which content to output based on
36       * the accept type.
37       * Current types:
38       * text/html
39       * text/xml
40       * text/vnd.wap.wml
41       * 
42       * 
43       */
44      public static void rerouteForContent(HttpPresentationComms comms) 
45          throws AirSentPresentationException {
46      String   header = null;
47      String   userAgent = null;
48      String   flashClient = null;
49      try {
50          flashClient =  comms.request.getParameter("flash"); 
51          userAgent = comms.request.getHeader("User-Agent"); 
52          if (flashClient != null) {
53          comms.response.setEncoding("ISO8859_1");
54          throw new ClientPageRedirectException(AirSentConstants.XML_PAGE);
55          } 
56          else if(userAgent != null && userAgent.indexOf("DoCoMo") != -1) {
57          throw new ClientPageRedirectException(AirSentConstants.CHTML_PAGE);
58          } 
59          else if(userAgent != null && userAgent.indexOf("Pixo") != -1) {
60          throw new ClientPageRedirectException(AirSentConstants.CHTML_PAGE);
61          }
62          else if(userAgent != null && userAgent.indexOf("RIM") != -1) {
63          throw new ClientPageRedirectException(AirSentConstants.CHTML_PAGE);
64          }
65          else if(userAgent != null && userAgent.indexOf("Digital Paths") != -1) {
66          throw new ClientPageRedirectException(AirSentConstants.CHTML_PAGE);
67          }
68          else if(userAgent != null && userAgent.indexOf("UP.") != -1) {
69          throw new ClientPageRedirectException(AirSentConstants.WAP_PAGE);
70          } 
71          else if ((header = comms.request.getHeader(AirSentConstants.ACCEPT)) 
72               == null) {
73          // Just display HTML
74          return;
75          }else if (header != null && header.indexOf(AirSentConstants.HTML_CONTENT) != -1 ||
76                   flashClient != null) {
77              return;
78          } 
79          else if (header != null && header.indexOf(AirSentConstants.XML_CONTENT) != -1 ||
80               flashClient != null) {
81          throw new ClientPageRedirectException(AirSentConstants.XML_PAGE);
82          } 
83          else if ( header != null && header.indexOf(AirSentConstants.WAP_CONTENT) != -1) {
84          throw new ClientPageRedirectException(AirSentConstants.WAP_PAGE);
85          } 
86          else if (header != null && header.indexOf(AirSentConstants.XHTML_CONTENT) 
87               != -1) {}
88          else if (header != null && header.indexOf(AirSentConstants.CHTML_CONTENT) != -1) {
89          //????
90          } 
91          else {
92          if(userAgent == null) {
93              throw new ClientPageRedirectException(AirSentConstants.CHTML_PAGE);
94          }
95          }
96      } catch (Exception   e) {
97          throw new AirSentPresentationException("Trouble rerouting header:" 
98                             + header, e);
99      } 
100     } 
101     
102     /**
103      * Gets the suffix of a PO name based on the
104      * accept type.
105      * @param String PO classname
106      * @return PO new full classname with suffix.
107      */
108     public static String   getPageName(HttpPresentationComms comms, String   poName) 
109     throws AirSentPresentationException {
110     String   header = null;
111     String   userAgent = null;
112     String   flashClient = null;
113     
114     try {
115         flashClient =  comms.request.getParameter("flash"); 
116         userAgent = comms.request.getHeader("User-Agent"); 
117         if (flashClient != null) {
118         comms.response.setEncoding("ISO-8859-1");
119         return poName + "XML";
120         } 
121         //
122         //DoCoMo code thanks to Ray Mercer
123         //
124         else if(userAgent != null && userAgent.indexOf("DoCoMo") != -1) {
125         return poName + "CHTML";
126         }   else if(userAgent != null && userAgent.indexOf("Pixo") != -1) {
127         return poName + "CHTML";
128         } else if(userAgent != null && userAgent.indexOf("RIM") != -1) {
129         return poName + "HTML";
130         } else if(userAgent != null && userAgent.indexOf("UP.") != -1) {
131         return poName + "WML";
132         } else if ((header = comms.request.getHeader(AirSentConstants.ACCEPT)) 
133                == null) {
134         // Can't decipher accept type.
135         return null;
136         }else if (header.indexOf(AirSentConstants.HTML_CONTENT) != -1) {
137             //Defaulting to html.
138             return poName + "HTML";
139         } else if (header.indexOf(AirSentConstants.XML_CONTENT) != -1) {
140         return poName + "XML";
141         } else if (header.indexOf(AirSentConstants.WAP_CONTENT) != -1) {
142         return poName + "WML";
143         } else if (header.indexOf(AirSentConstants.XHTML_CONTENT) != -1) {
144         return poName + "XHTML";
145         } else if (header.indexOf(AirSentConstants.CHTML_CONTENT) != -1) {
146         return poName + "CHTML";
147         }
148         else {
149         if(userAgent == null) {
150             //Defaulting to chtml.
151             return poName + "CHTML";
152         }
153         else {
154             //Defaulting to html.
155             return poName + "HTML";
156         }
157         } 
158     } catch (Exception   e) {
159         throw new AirSentPresentationException("Trouble rerouting header:" 
160                            + header, e);
161     } 
162     } 
163     
164     /**
165      *Recursivly walk the dom and replace any url with the
166      *url + a timestamp=current time in millis.
167       **!!Hack for buggy phone caching!!
168       */
169     public static void setURLTimeStamp(org.enhydra.xml.xmlc.XMLObject dom) {
170         DeviceUtils.setNodeTimeStamp(dom.getDocumentElement());
171     }
172 
173     
174     /**
175      *Recursivly walk the DOM replacing urls.  
176      **!!Hack for buggy phone caching!!
177      */
178     public static void setNodeTimeStamp(Node node) {
179         if (Node.ELEMENT_NODE == node.getNodeType()){
180             String   urlValue = null;
181             if(!(urlValue = ((Element)node).getAttribute("href")).equals("")) {
182             ((Element)node).setAttribute("href", DeviceUtils.getTimeStampParam(urlValue));
183             }
184             NodeList nodeList = node.getChildNodes();
185             for(int curNode = 0; curNode < nodeList.getLength(); curNode++){
186             DeviceUtils.setNodeTimeStamp(nodeList.item(curNode));
187             }
188         }
189     }
190     
191     /**
192      **Append timestamp to force caching
193      **!!Hack for buggy phone caching!!
194      **
195      */
196     public static String   getTimeStampParam(String   url) {
197         String   delimiter = url.indexOf("?") != -1 ? "&" : "?";
198         return url + delimiter + "timestamp=" + System.currentTimeMillis();
199     }
200 
201     
202     
203 
204 
205 }
206 
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