io.undertow.server.handlers.resource.DirectoryUtils Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.undertow.server.handlers.resource;
import io.undertow.UndertowLogger;
import io.undertow.predicate.PathPrefixPredicate;
import io.undertow.predicate.Predicate;
import io.undertow.predicate.PathPrefixPredicate.PathPrefixMatchRecord;
import io.undertow.server.HttpServerExchange;
import io.undertow.util.DateUtils;
import io.undertow.util.ETag;
import io.undertow.util.ETagUtils;
import io.undertow.util.FlexBase64;
import io.undertow.util.Headers;
import io.undertow.util.Methods;
import io.undertow.util.RedirectBuilder;
import io.undertow.util.StatusCodes;
import org.xnio.channels.Channels;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.Map;
/**
* @author Stuart Douglas
*/
public class DirectoryUtils {
/**
* Serve static resource for the directory listing
*
* @param exchange The exchange
* @return true if resources were served
*/
public static boolean sendRequestedBlobs(HttpServerExchange exchange) {
ByteBuffer buffer = null;
String type = null;
String etag = null;
String quotedEtag = null;
if ("css".equals(exchange.getQueryString())) {
buffer = Blobs.FILE_CSS_BUFFER.duplicate();
type = "text/css";
etag = Blobs.FILE_CSS_ETAG;
quotedEtag = Blobs.FILE_CSS_ETAG_QUOTED;
} else if ("js".equals(exchange.getQueryString())) {
buffer = Blobs.FILE_JS_BUFFER.duplicate();
type = "application/javascript";
etag = Blobs.FILE_JS_ETAG;
quotedEtag = Blobs.FILE_JS_ETAG_QUOTED;
}
if (buffer != null) {
if(!ETagUtils.handleIfNoneMatch(exchange, new ETag(false, etag), false)) {
exchange.setStatusCode(StatusCodes.NOT_MODIFIED);
return true;
}
exchange.getResponseHeaders().put(Headers.CONTENT_LENGTH, String.valueOf(buffer.limit()));
exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, type);
exchange.getResponseHeaders().put(Headers.ETAG, quotedEtag);
if (Methods.HEAD.equals(exchange.getRequestMethod())) {
exchange.endExchange();
return true;
}
exchange.getResponseSender().send(buffer);
return true;
}
return false;
}
/**
*
* @param path
* @param resource
* @return
*/
@Deprecated(forRemoval = true, since = "2.3.6.Final")
public static StringBuilder renderDirectoryListing(String path, final Resource resource) {
return renderDirectoryListing(null, path, resource);
}
public static StringBuilder renderDirectoryListing(final HttpServerExchange exchange, String path, final Resource resource) {
if (!path.endsWith("/")){
path += "/";
}
String relative = null;
if (exchange != null) {
final Map context = exchange.getAttachment(Predicate.PREDICATE_CONTEXT);
if (context != null) {
final PathPrefixPredicate.PathPrefixMatchRecord trans = (PathPrefixMatchRecord) context
.get(PathPrefixPredicate.PREFIX_MATCH_RECORD);
if (trans != null) {
if (trans.isOverWritten()) {
relative = trans.getPrefix();
if (!relative.endsWith("/") && !path.startsWith("/")) {
relative += "/";
}
}
}
}
}
StringBuilder builder = new StringBuilder();
builder.append("\n\n\n")
.append("\n\n");
builder.append("\n\n\n");
builder.append("Directory Listing - ").append(relative == null ? path : relative + path).append(" Name Last Modified Size Powered by Undertow [..] ");
builder.append(format.format((resource.getLastModified() == null ? new Date(0L) : resource.getLastModified())))
.append(" -- ").append(entry.getName()).append(" ");
builder.append(format.format((entry.getLastModified() == null) ? new Date(0L) : entry.getLastModified()))
.append(" ");
if (entry.isDirectory()) {
builder.append("--");
} else {
formatSize(builder, entry.getContentLength());
}
builder.append("
\n\n");
return builder;
}
public static void renderDirectoryListing(HttpServerExchange exchange, Resource resource) {
String requestPath = exchange.getRequestPath();
if (! requestPath.endsWith("/")) {
exchange.setStatusCode(StatusCodes.FOUND);
exchange.getResponseHeaders().put(Headers.LOCATION, RedirectBuilder.redirect(exchange, exchange.getRelativePath() + "/", true));
exchange.endExchange();
return;
}
StringBuilder builder = renderDirectoryListing(exchange, requestPath, resource);
try {
ByteBuffer output = ByteBuffer.wrap(builder.toString().getBytes(StandardCharsets.UTF_8));
exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "text/html; charset=UTF-8");
exchange.getResponseHeaders().put(Headers.CONTENT_LENGTH, String.valueOf(output.limit()));
exchange.getResponseHeaders().put(Headers.LAST_MODIFIED, DateUtils.toDateString(new Date()));
exchange.getResponseHeaders().put(Headers.CACHE_CONTROL, "must-revalidate");
Channels.writeBlocking(exchange.getResponseChannel(), output);
} catch (UnsupportedEncodingException e) {
throw new IllegalStateException(e);
} catch (IOException e) {
UndertowLogger.REQUEST_IO_LOGGER.ioException(e);
exchange.setStatusCode(StatusCodes.INTERNAL_SERVER_ERROR);
}
exchange.endExchange();
}
private static StringBuilder formatSize(StringBuilder builder, Long size) {
if(size == null) {
builder.append("???");
return builder;
}
int n = 1024 * 1024 * 1024;
int type = 0;
while (size < n && n >= 1024) {
n /= 1024;
type++;
}
long top = (size * 100) / n;
long bottom = top % 100;
top /= 100;
builder.append(top);
if (bottom > 0) {
builder.append(".").append(bottom / 10);
bottom %= 10;
if (bottom > 0) {
builder.append(bottom);
}
}
switch (type) {
case 0: builder.append(" GB"); break;
case 1: builder.append(" MB"); break;
case 2: builder.append(" KB"); break;
}
return builder;
}
private DirectoryUtils() {
}
/**
* Constant Content
*
* @author Jason T. Greene
*/
public static class Blobs {
public static final String FILE_JS="function growit() {\n" +
" var table = document.getElementById(\"thetable\");\n" +
"\n" +
" var i = table.rows.length - 1;\n" +
" while (i-- > 0) {\n" +
" if (table.rows[i].id == \"eraseme\") {\n" +
" table.deleteRow(i);\n" +
" } else {\n" +
" break;\n" +
" }\n" +
" }\n" +
" table.style.height=\"\";\n" +
" var i = 0;\n" +
" while (table.offsetHeight < window.innerHeight - 24) {\n" +
" i++;\n" +
" var tbody = table.tBodies[0];\n" +
" var row = tbody.insertRow(tbody.rows.length);\n" +
" row.id=\"eraseme\";\n" +
" var cell = row.insertCell(0);\n" +
" if (table.rows.length % 2 != 0) {\n" +
" row.className=\"even eveninvis\";\n" +
" } else {\n" +
" row.className=\"odd oddinvis\";\n" +
" }\n" +
"\n" +
" cell.colSpan=3;\n" +
" cell.appendChild(document.createTextNode(\"i\"));\n" +
" }\n" +
" table.style.height=\"100%\";\n" +
" if (i > 0) {\n" +
" document.documentElement.style.overflowY=\"hidden\";\n" +
" } else {\n" +
" document.documentElement.style.overflowY=\"auto\";\n" +
" }\n" +
"}";
public static final String FILE_JS_ETAG = md5(FILE_JS.getBytes(StandardCharsets.US_ASCII));
public static final String FILE_JS_ETAG_QUOTED = '"' + FILE_JS_ETAG + '"';
public static final String FILE_CSS =
"body {\n" +
" font-family: \"Lucida Grande\", \"Lucida Sans Unicode\", \"Trebuchet MS\", Helvetica, Arial, Verdana, sans-serif;\n" +
" margin: 5px;\n" +
"}\n" +
"\n" +
"th.loc {\n" +
" background-image: linear-gradient(bottom, rgb(153,151,153) 8%, rgb(199,199,199) 54%);\n" +
" background-image: -o-linear-gradient(bottom, rgb(153,151,153) 8%, rgb(199,199,199) 54%);\n" +
" background-image: -moz-linear-gradient(bottom, rgb(153,151,153) 8%, rgb(199,199,199) 54%);\n" +
" background-image: -webkit-linear-gradient(bottom, rgb(153,151,153) 8%, rgb(199,199,199) 54%);\n" +
" background-image: -ms-linear-gradient(bottom, rgb(153,151,153) 8%, rgb(199,199,199) 54%);\n" +
" \n" +
" background-image: -webkit-gradient(\n" +
" linear,\n" +
" left bottom,\n" +
" left top,\n" +
" color-stop(0.08, rgb(153,151,153)),\n" +
" color-stop(0.54, rgb(199,199,199))\n" +
" );\n" +
" color: black;\n" +
" padding: 2px;\n" +
" font-weight: normal;\n" +
" border: solid 1px;\n" +
" font-size: 150%;\n" +
" text-align: left;\n" +
"}\n" +
"\n" +
"th.label {\n" +
" border: solid 1px;\n" +
" text-align: left;\n" +
" padding: 4px;\n" +
" padding-left: 8px;\n" +
" font-weight: normal;\n" +
" font-size: small;\n" +
" background-color: #e8e8e8;\n" +
"}\n" +
"\n" +
"th.offset {\n" +
" padding-left: 32px;\n" +
"}\n" +
"\n" +
"th.footer {\n" +
" font-size: 75%;\n" +
" text-align: right;\n" +
"}\n" +
"\n" +
"a.icon {\n" +
" padding-left: 24px;\n" +
" text-decoration: none;\n" +
" color: black;\n" +
"}\n" +
"\n" +
"a.icon:hover {\n" +
" text-decoration: underline;\n" +
"}\n" +
"\n" +
"table {\n" +
" border: 1px solid;\n" +
" border-spacing: 0px;\n" +
" width: 100%;\n" +
" border-collapse: collapse;\n" +
"}\n" +
"\n" +
"tr.odd {\n" +
" background-color: #f3f6fa;\n" +
"}\n" +
"\n" +
"tr.odd td {\n" +
" padding: 2px;\n" +
" padding-left: 8px;\n" +
" font-size: smaller;\n" +
"}\n" +
"\n" +
"tr.even {\n" +
" background-color: #ffffff;\n" +
"}\n" +
"\n" +
"tr.even td {\n" +
" padding: 2px;\n" +
" padding-left: 8px;\n" +
" font-size: smaller;\n" +
"}\n" +
"\n" +
"tr.eveninvis td {\n" +
" color: #ffffff;\n" +
"}\n" +
"\n" +
"tr.oddinvis td {\n" +
" color: #f3f6fa\n" +
"}\n" +
"\n" +
"a.up {\n" +
" background: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABI0lEQVQ4y2P4//8/Ay7sM4nhPwjjUwMm0ua//Y+M0+e//QrSGDAfgvEZAjdgydHXcAzTXLjWDoxhhqBbhGLA1N0vwBhdM7ohMHVwA8yrzn4zLj/936j8FE7N6IaA1IL0gPQy2DVc+rnp3FeCmtENAekB6WXw7Lz1tWD5x/+wEIdhdI3o8iA9IL0MYZMfvq9a9+V/w+avcIzLAGQ1ID0gvQxJc56/aNn29X/vnm9wjMsAZDWtQD0gvQwFy94+6N37/f/Moz/gGJcByGpAekB6GarXf7427ciP/0vP/YRjdP/CMLIakB6QXobKDd9PN+769b91P2kYpAekl2HJhb8r11/583/9ZRIxUM+8U783MQCBGBDXAHEbibgGrBdfTiMGU2wAAPz+nxp+TnhDAAAAAElFTkSuQmCC') left center no-repeat; background-size: 16px 16px;\n" +
"}\n" +
"\n" +
"a.dir {\n" +
" background: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAACXZwQWcAAAAQAAAAEABcxq3DAAAA+UlEQVQ4jWP4//8/AyUYTKTNf/sfGafPf/s1be47G5IMWHL0NRxP2f3mbcaCtz/RDUbHKAZM3f2CJAw3wLzq7Dfj8tP/jcpPkYRBekB6GewaLv3cdO7r/y0XSMMgPSC9DJ6dt74WLP/4v3TVZ5IwSA9IL0PY5Ifvq9Z9+d+w+StJGKQHpJchac7zFy3bvv7v3fONJNwK1APSy5C/7O2D3r3f/888+oMkDNID0stQvf7ztWlHfvxfeu4nSRikB6SXoXLD99ONu379b91PGgbpAellWHLh38r1V/78X3+ZRAzUM/fUr00MQCAGxDVA3EYirgHrpUpupAQDAPs+7c1tGDnPAAAAAElFTkSuQmCC') left center no-repeat; background-size: 16px 16px;\n" +
"}\n" +
"\n" +
"a.file {\n" +
" background: url('data:image/png;base64,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') left center no-repeat;\n" +
"}";
public static final String FILE_CSS_ETAG = md5(FILE_CSS.getBytes(StandardCharsets.US_ASCII));
public static final String FILE_CSS_ETAG_QUOTED = '"' + FILE_CSS_ETAG + '"';
public static final ByteBuffer FILE_CSS_BUFFER;
public static final ByteBuffer FILE_JS_BUFFER;
static {
try {
byte[] bytes = FILE_CSS.getBytes(StandardCharsets.US_ASCII);
FILE_CSS_BUFFER = ByteBuffer.allocateDirect(bytes.length);
FILE_CSS_BUFFER.put(bytes);
FILE_CSS_BUFFER.flip();
bytes = FILE_JS.getBytes(StandardCharsets.US_ASCII);
FILE_JS_BUFFER = ByteBuffer.allocateDirect(bytes.length);
FILE_JS_BUFFER.put(bytes);
FILE_JS_BUFFER.flip();
} catch (Exception e) {
throw new IllegalStateException(e);
}
}
}
/**
* Generate the MD5 hash out of the given {@link ByteBuffer}
*/
private static String md5(byte[] buffer) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(buffer);
byte[] digest = md.digest();
return new String(FlexBase64.encodeBytes(digest, 0, digest.length, false), StandardCharsets.US_ASCII);
} catch (NoSuchAlgorithmException e) {
// Should never happen
throw new InternalError("MD5 not supported on this platform");
}
}
}