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16 package org.apache.cocoon.components.jsp;
17
18 import org.apache.avalon.framework.logger.AbstractLogEnabled;
19 import org.apache.avalon.framework.parameters.ParameterException;
20 import org.apache.avalon.framework.parameters.Parameters;
21 import org.apache.avalon.framework.parameters.Parameterizable;
22 import org.apache.avalon.framework.thread.ThreadSafe;
23
24 import javax.servlet.RequestDispatcher  ;
25 import javax.servlet.ServletContext ;
26 import javax.servlet.ServletException ;
27 import javax.servlet.http.Cookie ;
28 import javax.servlet.http.HttpServletRequest ;
29 import javax.servlet.http.HttpServletResponse ;
30 import java.io.ByteArrayOutputStream ;
31 import java.io.IOException ;
32 import java.util.Locale ;
33
34
45 public class JSPEngineImplWLS extends AbstractLogEnabled
46 implements JSPEngine, Parameterizable, ThreadSafe {
47
48
49 public static final String INC_SERVLET_PATH = "javax.servlet.include.servlet_path";
50
51
54 public static final String CONFIG_SERVLET_NAME = "servlet-name";
55
58 public static final String DEFAULT_SERVLET_NAME = "*.jsp";
59
61
62 String servletName = DEFAULT_SERVLET_NAME;
63
64
69 public void parameterize(Parameters params) throws ParameterException {
70 this.servletName = params.getParameter( CONFIG_SERVLET_NAME, DEFAULT_SERVLET_NAME);
71 }
72
73
84 public byte[] executeJSP(String url,
85 HttpServletRequest servletRequest,
86 HttpServletResponse servletResponse,
87 ServletContext servletContext)
88 throws IOException , ServletException , Exception {
89
90 byte[] bytes = null;
91
92 HttpServletRequest request = servletRequest;
93 String inc_servlet_path_was = (String ) servletRequest.getAttribute(INC_SERVLET_PATH);
94 request.setAttribute(INC_SERVLET_PATH, url);
95 MyWLSResponse response = new MyWLSResponse( servletResponse,
96 (weblogic.servlet.internal.ServletContextImpl) servletContext);
97
98 RequestDispatcher rd = servletContext.getNamedDispatcher(servletName);
100 if (rd != null) {
101 rd.include(request,response);
102 response.flushBuffer();
103
104 if (getLogger().isDebugEnabled()) {
105 getLogger().debug("JSP response: " + response.getResponseContentAsString());
106 }
107
108 bytes = response.getResponseContentAsByteArray();
109
110 if (inc_servlet_path_was != null) {
111 servletRequest.setAttribute( INC_SERVLET_PATH, inc_servlet_path_was );
112 }
113 } else {
114 getLogger().error( "Specify a correct " + CONFIG_SERVLET_NAME + " " + servletName );
115 }
116
117 return bytes;
118 }
119
120
132 static class MyWLSResponse extends weblogic.servlet.internal.ServletResponseImpl {
133
136 HttpServletResponse response;
137
138 ByteArrayOutputStream baos;
139 weblogic.servlet.internal.ServletOutputStreamImpl wlsOutputStream;
140
141 public MyWLSResponse( HttpServletResponse response,
142 weblogic.servlet.internal.ServletContextImpl servlet_context ) {
143
144 super( servlet_context );
145 this.response = response;
146
147 baos = new ByteArrayOutputStream ();
148
149 wlsOutputStream =
150 new weblogic.servlet.internal.ServletOutputStreamImpl( baos );
151 this.setOutputStream( wlsOutputStream );
152 wlsOutputStream.setImpl( this );
153 }
154
155
157 public void flushBuffer() throws IOException {
158 super.flushBuffer();
159 baos.flush();
160 }
161
162
170 public byte[] getResponseContentAsByteArray() {
171 byte[] baos_arr = baos.toByteArray();
172
173 int baos_arr_length = baos_arr.length;
174 int i = 0;
175 boolean matched = false;
176 final int I_MAX = 8192;
178 final byte MATCH_0d = (byte)'\r';
179 final byte MATCH_0a = (byte)'\n';
180
181 final byte MATCH_FIRST = (byte)'<';
182 final byte MATCH_SECOND = (byte)'?';
183 final byte MATCH_THIRD = (byte)'x';
184 final byte MATCH_FOURTH = (byte)'m';
185 final byte MATCH_FIFTH = (byte)'l';
186
187 final int MATCH_COUNT = 5;
188
189 while (i + MATCH_COUNT < baos_arr_length && i < I_MAX && !matched) {
190
191 matched = (baos_arr[i] == MATCH_FIRST && baos_arr[i+1] == MATCH_SECOND &&
192 baos_arr[i+2] == MATCH_THIRD && baos_arr[i+3] == MATCH_FOURTH &&
193 baos_arr[i+4] == MATCH_FIFTH);
194 if (matched) break;
195
196 matched = (baos_arr[i] == MATCH_0d && baos_arr[i+1] == MATCH_0a &&
197 baos_arr[i+2] == MATCH_0d && baos_arr[i+3] == MATCH_0a &&
198 baos_arr[i+4] == MATCH_FIRST);
199 if (matched) {
200 i += 4; break;
202 }
203 i += 2;
204 }
205 if (matched && i > 0) {
206 int baos_arr_new_length = baos_arr_length - i;
207
208 byte []new_baos_arr = new byte[baos_arr_new_length];
209 System.arraycopy( baos_arr, i, new_baos_arr, 0, baos_arr_new_length );
210 baos_arr = new_baos_arr;
211 }
212 return baos_arr;
213 }
214
215 public String getResponseContentAsString() {
216 String s = new String ( getResponseContentAsByteArray() );
217 return s;
218 }
219
220
222 public String getCharacterEncoding() { return this.response.getCharacterEncoding();}
223 public Locale getLocale(){ return this.response.getLocale();}
224 public void addCookie(Cookie cookie){ response.addCookie(cookie); }
225 public boolean containsHeader(String s){ return response.containsHeader(s); }
226
227 public String encodeUrl(String s){ return response.encodeUrl(s); }
228 public String encodeURL(String s){ return response.encodeURL(s); }
229
230 public String encodeRedirectUrl(String s){ return response.encodeRedirectUrl(s); }
231 public String encodeRedirectURL(String s){ return response.encodeRedirectURL(s); }
232 public void sendError(int i, String s)
233 throws IOException {response.sendError(i,s); }
234 public void sendError(int i)
235 throws IOException {response.sendError(i); }
236 public void sendRedirect(String s)
237 throws IOException {response.sendRedirect(s); }
238 public void setDateHeader(String s, long l){response.setDateHeader(s, l); }
239 public void addDateHeader(String s, long l){response.addDateHeader(s, l); }
240 public void setHeader(String s, String s1){response.setHeader(s, s1); }
241 public void addHeader(String s, String s1){response.addHeader(s, s1); }
242 public void setIntHeader(String s, int i){response.setIntHeader(s, i); }
243 public void addIntHeader(String s, int i){response.addIntHeader(s, i); }
244 public void setStatus(int i){response.setStatus(i); }
245
246 public void setStatus(int i, String s){response.setStatus(i, s); }
247 }
248 }
249 |
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