Examples with CacheEntry org.apache.naming.resources.CacheEntry used on opensource projects

Example 6 with CacheEntry

use of org.apache.naming.resources.CacheEntry in project tomcat70 by apache.

the class DefaultServlet method serveResource.

/**
 * Serve the specified resource, optionally including the data content.
 *
 * @param request The servlet request we are processing
 * @param response The servlet response we are creating
 * @param content Should the content be included?
 *
 * @exception IOException if an input/output error occurs
 * @exception ServletException if a servlet-specified error occurs
 */
protected void serveResource(HttpServletRequest request, HttpServletResponse response, boolean content) throws IOException, ServletException {
    boolean serveContent = content;
    // Identify the requested resource path
    String path = getRelativePath(request, true);
    if (debug > 0) {
        if (serveContent)
            log("DefaultServlet.serveResource:  Serving resource '" + path + "' headers and data");
        else
            log("DefaultServlet.serveResource:  Serving resource '" + path + "' headers only");
    }
    if (path.length() == 0) {
        // Context root redirect
        doDirectoryRedirect(request, response);
        return;
    }
    CacheEntry cacheEntry = resources.lookupCache(path);
    boolean isError = DispatcherType.ERROR == request.getDispatcherType();
    if (!cacheEntry.exists) {
        // Check if we're included so we can return the appropriate
        // missing resource name in the error
        String requestUri = (String) request.getAttribute(RequestDispatcher.INCLUDE_REQUEST_URI);
        if (requestUri == null) {
            requestUri = request.getRequestURI();
        } else {
            // SRV.9.3 says we must throw a FNFE
            throw new FileNotFoundException(sm.getString("defaultServlet.missingResource", requestUri));
        }
        if (isError) {
            response.sendError(((Integer) request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE)).intValue());
        } else {
            response.sendError(HttpServletResponse.SC_NOT_FOUND, requestUri);
        }
        return;
    }
    // satisfied.
    if (cacheEntry.context == null) {
        // Checking If headers
        boolean included = (request.getAttribute(RequestDispatcher.INCLUDE_CONTEXT_PATH) != null);
        if (!included && !isError && !checkIfHeaders(request, response, cacheEntry.attributes)) {
            return;
        }
    }
    // Find content type.
    String contentType = cacheEntry.attributes.getMimeType();
    if (contentType == null) {
        contentType = getServletContext().getMimeType(cacheEntry.name);
        cacheEntry.attributes.setMimeType(contentType);
    }
    ArrayList<Range> ranges = null;
    long contentLength = -1L;
    if (cacheEntry.context != null) {
        if (!path.endsWith("/")) {
            doDirectoryRedirect(request, response);
            return;
        }
        // suppress them
        if (!listings) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND, request.getRequestURI());
            return;
        }
        contentType = "text/html;charset=UTF-8";
    } else {
        if (!isError) {
            if (useAcceptRanges) {
                // Accept ranges header
                response.setHeader("Accept-Ranges", "bytes");
            }
            // Parse range specifier
            ranges = parseRange(request, response, cacheEntry.attributes);
            // ETag header
            response.setHeader("ETag", cacheEntry.attributes.getETag());
            // Last-Modified header
            response.setHeader("Last-Modified", cacheEntry.attributes.getLastModifiedHttp());
        }
        // Get content length
        contentLength = cacheEntry.attributes.getContentLength();
        // (silent) ISE when setting the output buffer size
        if (contentLength == 0L) {
            serveContent = false;
        }
    }
    ServletOutputStream ostream = null;
    PrintWriter writer = null;
    if (serveContent) {
        try {
            ostream = response.getOutputStream();
        } catch (IllegalStateException e) {
            // trying to serve a text file
            if ((contentType == null) || (contentType.startsWith("text")) || (contentType.endsWith("xml")) || (contentType.contains("/javascript"))) {
                writer = response.getWriter();
                // Cannot reliably serve partial content with a Writer
                ranges = FULL;
            } else {
                throw e;
            }
        }
    }
    // Check to see if a Filter, Valve of wrapper has written some content.
    // If it has, disable range requests and setting of a content length
    // since neither can be done reliably.
    ServletResponse r = response;
    long contentWritten = 0;
    while (r instanceof ServletResponseWrapper) {
        r = ((ServletResponseWrapper) r).getResponse();
    }
    if (r instanceof ResponseFacade) {
        contentWritten = ((ResponseFacade) r).getContentWritten();
    }
    if (contentWritten > 0) {
        ranges = FULL;
    }
    if ((cacheEntry.context != null) || isError || (((ranges == null) || (ranges.isEmpty())) && (request.getHeader("Range") == null)) || (ranges == FULL)) {
        // Set the appropriate output headers
        if (contentType != null) {
            if (debug > 0)
                log("DefaultServlet.serveFile:  contentType='" + contentType + "'");
            response.setContentType(contentType);
        }
        if ((cacheEntry.resource != null) && (contentLength >= 0) && (!serveContent || ostream != null)) {
            if (debug > 0)
                log("DefaultServlet.serveFile:  contentLength=" + contentLength);
            // written to the response.
            if (contentWritten == 0) {
                if (contentLength < Integer.MAX_VALUE) {
                    response.setContentLength((int) contentLength);
                } else {
                    // Set the content-length as String to be able to use a
                    // long
                    response.setHeader("content-length", "" + contentLength);
                }
            }
        }
        InputStream renderResult = null;
        if (cacheEntry.context != null) {
            if (serveContent) {
                // Serve the directory browser
                renderResult = render(getPathPrefix(request), cacheEntry);
            }
        }
        // Copy the input stream to our output stream (if requested)
        if (serveContent) {
            try {
                response.setBufferSize(output);
            } catch (IllegalStateException e) {
            // Silent catch
            }
            if (ostream != null) {
                if (!checkSendfile(request, response, cacheEntry, contentLength, null))
                    copy(cacheEntry, renderResult, ostream);
            } else {
                copy(cacheEntry, renderResult, writer);
            }
        }
    } else {
        if ((ranges == null) || (ranges.isEmpty()))
            return;
        // Partial content response.
        response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
        if (ranges.size() == 1) {
            Range range = ranges.get(0);
            response.addHeader("Content-Range", "bytes " + range.start + "-" + range.end + "/" + range.length);
            long length = range.end - range.start + 1;
            if (length < Integer.MAX_VALUE) {
                response.setContentLength((int) length);
            } else {
                // Set the content-length as String to be able to use a long
                response.setHeader("content-length", "" + length);
            }
            if (contentType != null) {
                if (debug > 0)
                    log("DefaultServlet.serveFile:  contentType='" + contentType + "'");
                response.setContentType(contentType);
            }
            if (serveContent) {
                try {
                    response.setBufferSize(output);
                } catch (IllegalStateException e) {
                // Silent catch
                }
                if (ostream != null) {
                    if (!checkSendfile(request, response, cacheEntry, range.end - range.start + 1, range))
                        copy(cacheEntry, ostream, range);
                } else {
                    // we should not get here
                    throw new IllegalStateException();
                }
            }
        } else {
            response.setContentType("multipart/byteranges; boundary=" + mimeSeparation);
            if (serveContent) {
                try {
                    response.setBufferSize(output);
                } catch (IllegalStateException e) {
                // Silent catch
                }
                if (ostream != null) {
                    copy(cacheEntry, ostream, ranges.iterator(), contentType);
                } else {
                    // we should not get here
                    throw new IllegalStateException();
                }
            }
        }
    }
}

Example 7 with CacheEntry

use of org.apache.naming.resources.CacheEntry in project tomcat70 by apache.

the class DefaultServlet method renderXml.

/**
 * Return an InputStream to an HTML representation of the contents
 * of this directory.
 *
 * @param contextPath Context path to which our internal paths are
 *  relative
 */
protected InputStream renderXml(String contextPath, CacheEntry cacheEntry, Source xsltSource) throws IOException, ServletException {
    StringBuilder sb = new StringBuilder();
    sb.append("<?xml version=\"1.0\"?>");
    sb.append("<listing ");
    sb.append(" contextPath='");
    sb.append(contextPath);
    sb.append("'");
    sb.append(" directory='");
    sb.append(cacheEntry.name);
    sb.append("' ");
    sb.append(" hasParent='").append(!cacheEntry.name.equals("/"));
    sb.append("'>");
    sb.append("<entries>");
    try {
        // Render the directory entries within this directory
        NamingEnumeration<NameClassPair> enumeration = resources.list(cacheEntry.name);
        // rewriteUrl(contextPath) is expensive. cache result for later reuse
        String rewrittenContextPath = rewriteUrl(contextPath);
        while (enumeration.hasMoreElements()) {
            NameClassPair ncPair = enumeration.nextElement();
            String resourceName = ncPair.getName();
            String trimmed = resourceName;
            if (trimmed.equalsIgnoreCase("WEB-INF") || trimmed.equalsIgnoreCase("META-INF") || trimmed.equalsIgnoreCase(localXsltFile))
                continue;
            if ((cacheEntry.name + trimmed).equals(contextXsltFile))
                continue;
            CacheEntry childCacheEntry = resources.lookupCache(cacheEntry.name + resourceName);
            if (!childCacheEntry.exists) {
                continue;
            }
            sb.append("<entry");
            sb.append(" type='").append((childCacheEntry.context != null) ? "dir" : "file").append("'");
            sb.append(" urlPath='").append(rewrittenContextPath).append(rewriteUrl(cacheEntry.name + resourceName)).append((childCacheEntry.context != null) ? "/" : "").append("'");
            if (childCacheEntry.resource != null) {
                sb.append(" size='").append(renderSize(childCacheEntry.attributes.getContentLength())).append("'");
            }
            sb.append(" date='").append(childCacheEntry.attributes.getLastModifiedHttp()).append("'");
            sb.append(">");
            sb.append(RequestUtil.filter(trimmed));
            if (childCacheEntry.context != null)
                sb.append("/");
            sb.append("</entry>");
        }
    } catch (NamingException e) {
        // Something went wrong
        throw new ServletException("Error accessing resource", e);
    }
    sb.append("</entries>");
    String readme = getReadme(cacheEntry.context);
    if (readme != null) {
        sb.append("<readme><![CDATA[");
        sb.append(readme);
        sb.append("]]></readme>");
    }
    sb.append("</listing>");
    // Prevent possible memory leak. Ensure Transformer and
    // TransformerFactory are not loaded from the web application.
    ClassLoader original;
    if (Globals.IS_SECURITY_ENABLED) {
        PrivilegedGetTccl pa = new PrivilegedGetTccl();
        original = AccessController.doPrivileged(pa);
    } else {
        original = Thread.currentThread().getContextClassLoader();
    }
    try {
        if (Globals.IS_SECURITY_ENABLED) {
            PrivilegedSetTccl pa = new PrivilegedSetTccl(DefaultServlet.class.getClassLoader());
            AccessController.doPrivileged(pa);
        } else {
            Thread.currentThread().setContextClassLoader(DefaultServlet.class.getClassLoader());
        }
        TransformerFactory tFactory = TransformerFactory.newInstance();
        Source xmlSource = new StreamSource(new StringReader(sb.toString()));
        Transformer transformer = tFactory.newTransformer(xsltSource);
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        OutputStreamWriter osWriter = new OutputStreamWriter(stream, "UTF8");
        StreamResult out = new StreamResult(osWriter);
        transformer.transform(xmlSource, out);
        osWriter.flush();
        return (new ByteArrayInputStream(stream.toByteArray()));
    } catch (TransformerException e) {
        throw new ServletException("XSL transformer error", e);
    } finally {
        if (Globals.IS_SECURITY_ENABLED) {
            PrivilegedSetTccl pa = new PrivilegedSetTccl(original);
            AccessController.doPrivileged(pa);
        } else {
            Thread.currentThread().setContextClassLoader(original);
        }
    }
}

Example 8 with CacheEntry

use of org.apache.naming.resources.CacheEntry in project tomcat70 by apache.

the class WebdavStatus method parseProperties.

/**
 * Propfind helper method.
 *
 * @param req The servlet request
 * @param resources Resources object associated with this context
 * @param generatedXML XML response to the Propfind request
 * @param path Path of the current resource
 * @param type Propfind type
 * @param propertiesVector If the propfind type is find properties by
 * name, then this Vector contains those properties
 */
private void parseProperties(HttpServletRequest req, XMLWriter generatedXML, String path, int type, Vector<String> propertiesVector) {
    // Exclude any resource in the /WEB-INF and /META-INF subdirectories
    if (isSpecialPath(path))
        return;
    CacheEntry cacheEntry = resources.lookupCache(path);
    if (!cacheEntry.exists) {
        // Broken symlink or odd permission settings?
        return;
    }
    generatedXML.writeElement("D", "response", XMLWriter.OPENING);
    String status = "HTTP/1.1 " + WebdavStatus.SC_OK + " " + WebdavStatus.getStatusText(WebdavStatus.SC_OK);
    // Generating href element
    generatedXML.writeElement("D", "href", XMLWriter.OPENING);
    String href = req.getContextPath() + req.getServletPath();
    if ((href.endsWith("/")) && (path.startsWith("/")))
        href += path.substring(1);
    else
        href += path;
    if ((cacheEntry.context != null) && (!href.endsWith("/")))
        href += "/";
    generatedXML.writeText(rewriteUrl(href));
    generatedXML.writeElement("D", "href", XMLWriter.CLOSING);
    String resourceName = path;
    int lastSlash = path.lastIndexOf('/');
    if (lastSlash != -1)
        resourceName = resourceName.substring(lastSlash + 1);
    switch(type) {
        case FIND_ALL_PROP:
            generatedXML.writeElement("D", "propstat", XMLWriter.OPENING);
            generatedXML.writeElement("D", "prop", XMLWriter.OPENING);
            generatedXML.writeProperty("D", "creationdate", getISOCreationDate(cacheEntry.attributes.getCreation()));
            generatedXML.writeElement("D", "displayname", XMLWriter.OPENING);
            generatedXML.writeData(resourceName);
            generatedXML.writeElement("D", "displayname", XMLWriter.CLOSING);
            if (cacheEntry.resource != null) {
                generatedXML.writeProperty("D", "getlastmodified", FastHttpDateFormat.formatDate(cacheEntry.attributes.getLastModified(), null));
                generatedXML.writeProperty("D", "getcontentlength", String.valueOf(cacheEntry.attributes.getContentLength()));
                String contentType = getServletContext().getMimeType(cacheEntry.name);
                if (contentType != null) {
                    generatedXML.writeProperty("D", "getcontenttype", contentType);
                }
                generatedXML.writeProperty("D", "getetag", cacheEntry.attributes.getETag());
                generatedXML.writeElement("D", "resourcetype", XMLWriter.NO_CONTENT);
            } else {
                generatedXML.writeElement("D", "resourcetype", XMLWriter.OPENING);
                generatedXML.writeElement("D", "collection", XMLWriter.NO_CONTENT);
                generatedXML.writeElement("D", "resourcetype", XMLWriter.CLOSING);
            }
            generatedXML.writeProperty("D", "source", "");
            String supportedLocks = "<D:lockentry>" + "<D:lockscope><D:exclusive/></D:lockscope>" + "<D:locktype><D:write/></D:locktype>" + "</D:lockentry>" + "<D:lockentry>" + "<D:lockscope><D:shared/></D:lockscope>" + "<D:locktype><D:write/></D:locktype>" + "</D:lockentry>";
            generatedXML.writeElement("D", "supportedlock", XMLWriter.OPENING);
            generatedXML.writeText(supportedLocks);
            generatedXML.writeElement("D", "supportedlock", XMLWriter.CLOSING);
            generateLockDiscovery(path, generatedXML);
            generatedXML.writeElement("D", "prop", XMLWriter.CLOSING);
            generatedXML.writeElement("D", "status", XMLWriter.OPENING);
            generatedXML.writeText(status);
            generatedXML.writeElement("D", "status", XMLWriter.CLOSING);
            generatedXML.writeElement("D", "propstat", XMLWriter.CLOSING);
            break;
        case FIND_PROPERTY_NAMES:
            generatedXML.writeElement("D", "propstat", XMLWriter.OPENING);
            generatedXML.writeElement("D", "prop", XMLWriter.OPENING);
            generatedXML.writeElement("D", "creationdate", XMLWriter.NO_CONTENT);
            generatedXML.writeElement("D", "displayname", XMLWriter.NO_CONTENT);
            if (cacheEntry.resource != null) {
                generatedXML.writeElement("D", "getcontentlanguage", XMLWriter.NO_CONTENT);
                generatedXML.writeElement("D", "getcontentlength", XMLWriter.NO_CONTENT);
                generatedXML.writeElement("D", "getcontenttype", XMLWriter.NO_CONTENT);
                generatedXML.writeElement("D", "getetag", XMLWriter.NO_CONTENT);
                generatedXML.writeElement("D", "getlastmodified", XMLWriter.NO_CONTENT);
            }
            generatedXML.writeElement("D", "resourcetype", XMLWriter.NO_CONTENT);
            generatedXML.writeElement("D", "source", XMLWriter.NO_CONTENT);
            generatedXML.writeElement("D", "lockdiscovery", XMLWriter.NO_CONTENT);
            generatedXML.writeElement("D", "prop", XMLWriter.CLOSING);
            generatedXML.writeElement("D", "status", XMLWriter.OPENING);
            generatedXML.writeText(status);
            generatedXML.writeElement("D", "status", XMLWriter.CLOSING);
            generatedXML.writeElement("D", "propstat", XMLWriter.CLOSING);
            break;
        case FIND_BY_PROPERTY:
            Vector<String> propertiesNotFound = new Vector<String>();
            // Parse the list of properties
            generatedXML.writeElement("D", "propstat", XMLWriter.OPENING);
            generatedXML.writeElement("D", "prop", XMLWriter.OPENING);
            Enumeration<String> properties = propertiesVector.elements();
            while (properties.hasMoreElements()) {
                String property = properties.nextElement();
                if (property.equals("creationdate")) {
                    generatedXML.writeProperty("D", "creationdate", getISOCreationDate(cacheEntry.attributes.getCreation()));
                } else if (property.equals("displayname")) {
                    generatedXML.writeElement("D", "displayname", XMLWriter.OPENING);
                    generatedXML.writeData(resourceName);
                    generatedXML.writeElement("D", "displayname", XMLWriter.CLOSING);
                } else if (property.equals("getcontentlanguage")) {
                    if (cacheEntry.context != null) {
                        propertiesNotFound.addElement(property);
                    } else {
                        generatedXML.writeElement("D", "getcontentlanguage", XMLWriter.NO_CONTENT);
                    }
                } else if (property.equals("getcontentlength")) {
                    if (cacheEntry.context != null) {
                        propertiesNotFound.addElement(property);
                    } else {
                        generatedXML.writeProperty("D", "getcontentlength", (String.valueOf(cacheEntry.attributes.getContentLength())));
                    }
                } else if (property.equals("getcontenttype")) {
                    if (cacheEntry.context != null) {
                        propertiesNotFound.addElement(property);
                    } else {
                        generatedXML.writeProperty("D", "getcontenttype", getServletContext().getMimeType(cacheEntry.name));
                    }
                } else if (property.equals("getetag")) {
                    if (cacheEntry.context != null) {
                        propertiesNotFound.addElement(property);
                    } else {
                        generatedXML.writeProperty("D", "getetag", cacheEntry.attributes.getETag());
                    }
                } else if (property.equals("getlastmodified")) {
                    if (cacheEntry.context != null) {
                        propertiesNotFound.addElement(property);
                    } else {
                        generatedXML.writeProperty("D", "getlastmodified", FastHttpDateFormat.formatDate(cacheEntry.attributes.getLastModified(), null));
                    }
                } else if (property.equals("resourcetype")) {
                    if (cacheEntry.context != null) {
                        generatedXML.writeElement("D", "resourcetype", XMLWriter.OPENING);
                        generatedXML.writeElement("D", "collection", XMLWriter.NO_CONTENT);
                        generatedXML.writeElement("D", "resourcetype", XMLWriter.CLOSING);
                    } else {
                        generatedXML.writeElement("D", "resourcetype", XMLWriter.NO_CONTENT);
                    }
                } else if (property.equals("source")) {
                    generatedXML.writeProperty("D", "source", "");
                } else if (property.equals("supportedlock")) {
                    supportedLocks = "<D:lockentry>" + "<D:lockscope><D:exclusive/></D:lockscope>" + "<D:locktype><D:write/></D:locktype>" + "</D:lockentry>" + "<D:lockentry>" + "<D:lockscope><D:shared/></D:lockscope>" + "<D:locktype><D:write/></D:locktype>" + "</D:lockentry>";
                    generatedXML.writeElement("D", "supportedlock", XMLWriter.OPENING);
                    generatedXML.writeText(supportedLocks);
                    generatedXML.writeElement("D", "supportedlock", XMLWriter.CLOSING);
                } else if (property.equals("lockdiscovery")) {
                    if (!generateLockDiscovery(path, generatedXML))
                        propertiesNotFound.addElement(property);
                } else {
                    propertiesNotFound.addElement(property);
                }
            }
            generatedXML.writeElement("D", "prop", XMLWriter.CLOSING);
            generatedXML.writeElement("D", "status", XMLWriter.OPENING);
            generatedXML.writeText(status);
            generatedXML.writeElement("D", "status", XMLWriter.CLOSING);
            generatedXML.writeElement("D", "propstat", XMLWriter.CLOSING);
            Enumeration<String> propertiesNotFoundList = propertiesNotFound.elements();
            if (propertiesNotFoundList.hasMoreElements()) {
                status = "HTTP/1.1 " + WebdavStatus.SC_NOT_FOUND + " " + WebdavStatus.getStatusText(WebdavStatus.SC_NOT_FOUND);
                generatedXML.writeElement("D", "propstat", XMLWriter.OPENING);
                generatedXML.writeElement("D", "prop", XMLWriter.OPENING);
                while (propertiesNotFoundList.hasMoreElements()) {
                    generatedXML.writeElement("D", propertiesNotFoundList.nextElement(), XMLWriter.NO_CONTENT);
                }
                generatedXML.writeElement("D", "prop", XMLWriter.CLOSING);
                generatedXML.writeElement("D", "status", XMLWriter.OPENING);
                generatedXML.writeText(status);
                generatedXML.writeElement("D", "status", XMLWriter.CLOSING);
                generatedXML.writeElement("D", "propstat", XMLWriter.CLOSING);
            }
            break;
    }
    generatedXML.writeElement("D", "response", XMLWriter.CLOSING);
}