From 360354fef51c43efa1f21ea642b167c1ff832a6b Mon Sep 17 00:00:00 2001
From: David Caruana <david.caruana@alfresco.com>
Date: Thu, 29 Oct 2009 17:32:24 +0000
Subject: [PATCH] Merged CMIS063 to HEAD   15943: Addition of CMIS FileShare to
 cmis.html front page.   15974: Merge content type to stylesheet change from
 latest CMIS FileShare.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@17238 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
---
 .../org/alfresco/cmis/cmis.get.html.ftl       |   6 +
 .../cmis/fileshare/info/BrowseServlet.java    | 248 ++++++++++++++++++
 .../de/fmui/cmis/fileshare/info/InfoUtil.java |  75 ++++++
 3 files changed, 329 insertions(+)
 create mode 100644 source/java/de/fmui/cmis/fileshare/info/BrowseServlet.java
 create mode 100644 source/java/de/fmui/cmis/fileshare/info/InfoUtil.java

diff --git a/config/alfresco/templates/webscripts/org/alfresco/cmis/cmis.get.html.ftl b/config/alfresco/templates/webscripts/org/alfresco/cmis/cmis.get.html.ftl
index c174bdfa26..ac7a9444ae 100644
--- a/config/alfresco/templates/webscripts/org/alfresco/cmis/cmis.get.html.ftl
+++ b/config/alfresco/templates/webscripts/org/alfresco/cmis/cmis.get.html.ftl
@@ -48,6 +48,8 @@
         <li>CMIS Web Services Binding: <a href="${url.context}/cmis">WSDL Documents</a></li>
       </ul>
       
+      <p>You can also browse this repository via the <a href="${url.context}/cmisbrowse?url=${absurl(url.serviceContext)}/api/cmis">CMIS FileShare browser</a>.</p>
+      
       <h5><span id="repoinfo" class="toggle" onclick="return toggleDisplay(this)">+</span> CMIS Repository Information</h5>
       <table id="repoinfo_body" style="display: none;">
         <tr><td>Version Supported</td><td>${cmisVersion}</td></tr>
@@ -126,6 +128,10 @@
         <li><a href="http://incubator.apache.org/chemistry/">Home Page</a></li>
         <li><a href="http://svn.apache.org/viewvc/incubator/chemistry/trunk/chemistry/chemistry-tck-atompub/">Source Code</a> for TCK</li>
       </ul>
+      <h3>CMIS FileShare</h3>
+      <ul>
+        <li><a href="http://cmisfs.fmui.de/">Home Page</a></li>
+      </ul>
       <h3>Provide Feedback</h3>
       <ul>
         <li><a href="http://forums.alfresco.com/en/viewforum.php?f=45">CMIS Forum</a></li>
diff --git a/source/java/de/fmui/cmis/fileshare/info/BrowseServlet.java b/source/java/de/fmui/cmis/fileshare/info/BrowseServlet.java
new file mode 100644
index 0000000000..1750f8e8cc
--- /dev/null
+++ b/source/java/de/fmui/cmis/fileshare/info/BrowseServlet.java
@@ -0,0 +1,248 @@
+/*
+ * Copyright (c) 2009, Florian Müller <mueller@gotux.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice, 
+ *   this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice, 
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package de.fmui.cmis.fileshare.info;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.servlet.ServletConfig;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.Result;
+import javax.xml.transform.Source;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.transform.stream.StreamSource;
+
+import org.w3c.dom.Document;
+
+public class BrowseServlet extends HttpServlet {
+
+	private static final long serialVersionUID = 1L;
+
+    private static final String PARAM_URL = "url";
+	private static final String INIT_PARAM_WEBCONTENTROOT = "webcontentroot";
+	private static final String INIT_PARAM_STYLESHEET = "stylesheet:";
+
+	private static final int BUFFER_SIZE = 64 * 1024;
+
+	private String webContentRoot = "";
+	private Map<String, Source> fStyleSheets;
+
+	@Override
+	public void init(ServletConfig config) throws ServletException {
+		fStyleSheets = new HashMap<String, Source>();
+
+		DocumentBuilder builder = null;
+		try {
+			DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
+			builderFactory.setNamespaceAware(true);
+			builder = builderFactory.newDocumentBuilder();
+		} catch (Exception e) {
+			e.printStackTrace();
+			return;
+		}
+
+		Enumeration<String> initParams = config.getInitParameterNames();
+		while (initParams.hasMoreElements()) {
+			String param = initParams.nextElement();
+			if (param.startsWith(INIT_PARAM_STYLESHEET)) {
+				String contentType = param.substring(INIT_PARAM_STYLESHEET.length());
+				String stylesheetFileName = config.getInitParameter(param);
+
+				InputStream stream = config.getServletContext().getResourceAsStream(stylesheetFileName);
+				if (stream != null) {
+					try {
+						Document xslDoc = builder.parse(stream);
+						addStylesheet(contentType, new DOMSource(xslDoc));
+					} catch (Exception e) {
+						e.printStackTrace();
+					}
+				}
+			}
+		}
+		
+		String initWebContentRoot = config.getInitParameter(INIT_PARAM_WEBCONTENTROOT);
+		if (initWebContentRoot != null) {
+		    webContentRoot = initWebContentRoot;
+		}
+	}
+
+	@Override
+	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+		if (req.getParameter(PARAM_URL) == null) {
+			printInput(req, resp);
+			return;
+		}
+
+		doBrowse(req, resp);
+	}
+
+	protected void doBrowse(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+		String browseUrl = req.getParameter(PARAM_URL);
+
+		try {
+			// get content
+			URL url = new URL(browseUrl);
+			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+			conn.setDoInput(true);
+			conn.setDoOutput(false);
+			conn.setRequestMethod("GET");
+			String authHeader = req.getHeader("Authorization");
+			if (authHeader != null) {
+				conn.setRequestProperty("Authorization", authHeader);
+			}
+			conn.connect();
+
+			// ask for login
+			if (conn.getResponseCode() == HttpURLConnection.HTTP_UNAUTHORIZED) {
+				resp.setHeader("WWW-Authenticate", conn.getHeaderField("WWW-Authenticate"));
+				resp.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Authorization Required");
+				return;
+			}
+
+			// find stylesheet
+			Source stylesheet = getStylesheet(conn.getContentType());
+
+			OutputStream out = null;
+			InputStream in = new BufferedInputStream(conn.getInputStream(), BUFFER_SIZE);
+
+			if (stylesheet == null) {
+				// no stylesheet found -> conduct content
+				resp.setContentType(conn.getContentType());
+				out = new BufferedOutputStream(resp.getOutputStream(), BUFFER_SIZE);
+
+				byte[] buffer = new byte[BUFFER_SIZE];
+				int b;
+				while ((b = in.read(buffer)) > -1) {
+					out.write(buffer, 0, b);
+				}
+			} else {
+				// apply stylesheet
+				TransformerFactory f = TransformerFactory.newInstance();
+				Transformer t = f.newTransformer(stylesheet);
+				t.setParameter("browseUrl", InfoUtil.getServletUrl(req) + "?url=");
+				t.setParameter("webContentRoot", webContentRoot);
+
+				resp.setContentType("text/html");
+				out = new BufferedOutputStream(resp.getOutputStream(), BUFFER_SIZE);
+
+				Source s = new StreamSource(in);
+				Result r = new StreamResult(out);
+				t.transform(s, r);
+			}
+
+			try {
+				out.flush();
+				out.close();
+			} catch (Exception e) {
+			}
+
+			try {
+				in.close();
+			} catch (Exception e) {
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+			printError(req, resp, e.getMessage(), e);
+			return;
+		}
+	}
+
+	protected void printError(HttpServletRequest req, HttpServletResponse resp, String message, Exception e)
+			throws ServletException, IOException {
+		resp.setContentType("text/html;charset=utf-8");
+		PrintWriter pw = resp.getWriter();
+
+		InfoUtil.printHeader(pw, "Error");
+		pw.println("<div style=\"background-color:#eeeeee; margin:15px; padding:5px;\">");
+		pw.println("<h3>" + message + "</h3>");
+
+		if (e != null) {
+			pw.print("<pre>");
+			e.printStackTrace(pw);
+			pw.println("</pre>");
+		}
+
+		pw.println("</div>");
+		InfoUtil.printFooter(pw);
+	}
+
+	protected void printInput(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+		resp.setContentType("text/html;charset=utf-8");
+		PrintWriter pw = resp.getWriter();
+
+		InfoUtil.printHeader(pw, "CMIS Browse");
+		pw.println("<h1>CMIS Browser</h1>");
+		pw.println("<div style=\"background-color:#eeeeee; margin:15px; padding:5px;\">");
+		pw.println("<form action=\"\" method=\"GET\">");
+		pw.println("CMIS AtomPub URL: ");
+		pw.println("<input name=\"url\" type=\"text\" size=\"100\" value=\"" + InfoUtil.getContextUrl(req) + "/atom"
+				+ "\"/>");
+		pw.println("<input type=\"submit\" value=\" GO \">");
+		pw.println("</form>");
+		pw.println("</div>");
+		InfoUtil.printFooter(pw);
+	}
+
+	private void addStylesheet(String contentType, Source source) {
+	    fStyleSheets.put(contentType, source);
+	}
+
+	private Source getStylesheet(String contentType) {
+        String[] ctp = contentType.split(";");
+        
+        Source source = null;
+        String match = "";
+        int i = 0;
+        while (source == null && i < ctp.length)
+        {
+            if (i > 0) {
+                match += ";";
+            }
+            match += ctp[i];
+            source = fStyleSheets.get(match);
+            i++;
+        }
+        return source;
+	}
+}
diff --git a/source/java/de/fmui/cmis/fileshare/info/InfoUtil.java b/source/java/de/fmui/cmis/fileshare/info/InfoUtil.java
new file mode 100644
index 0000000000..559842f1fd
--- /dev/null
+++ b/source/java/de/fmui/cmis/fileshare/info/InfoUtil.java
@@ -0,0 +1,75 @@
+package de.fmui.cmis.fileshare.info;
+
+import java.io.PrintWriter;
+
+import javax.servlet.http.HttpServletRequest;
+
+public class InfoUtil {
+
+	private InfoUtil() {
+	}
+
+	public static String getContextUrl(HttpServletRequest request) {
+		String scheme = request.getScheme();
+		int port = request.getServerPort();
+
+		if ("http".equals(scheme) && (port == 80)) {
+			port = -1;
+		}
+		if ("https".equals(scheme) && (port == 443)) {
+			port = -1;
+		}
+
+		return scheme + "://" + request.getServerName() + (port > 0 ? ":" + port : "") + request.getContextPath();
+	}
+
+	public static String getServletUrl(HttpServletRequest request) {
+		return getContextUrl(request) + request.getServletPath();
+	}
+
+	public static void printHeader(PrintWriter pw, String title) {
+		pw.print("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"");
+		pw.println("\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">");
+		pw.println("<html xmlns=\"http://www.w3.org/1999/xhtml\">");
+		pw.println("<head>");
+		pw.println("<title>" + title + "</title>");
+		pw.println("<meta http-equiv=\"content-type\" content=\"text/html; charset=UTF-8\">");
+		pw.println("<style type=\"text/css\">");
+		pw.println("body { font-family: arial,sans-serif; font-size: 10pt; }");
+		pw.println("</style>");
+		pw.println("</head>");
+		pw.println("<body>");
+	}
+
+	public static void printFooter(PrintWriter pw) {
+		pw.println("</body>");
+		pw.println("</html>");
+	}
+
+	public static void printStartSection(PrintWriter pw, String header) {
+		pw.println("<div style=\"background-color:#eeeeee; margin:15px; padding:5px;\">");
+		pw.println("<h3>" + header + "</h3>");
+	}
+
+	public static void printEndSection(PrintWriter pw) {
+		pw.println("</div>");
+	}
+
+	public static void printStartTable(PrintWriter pw) {
+		pw.println("<table>");
+	}
+
+	public static void printEndTable(PrintWriter pw) {
+		pw.println("</table>");
+	}
+
+	public static void printRow(PrintWriter pw, String... cols) {
+		pw.print("<tr>");
+
+		for (String col : cols) {
+			pw.print("<td>" + col + "</td>");
+		}
+
+		pw.println("</tr>");
+	}
+}