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package fi.iki.elonen;
/*
* #%L
* NanoHttpd-Webserver
* %%
* Copyright (C) 2012 - 2015 nanohttpd
* %%
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the nanohttpd nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 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.
* #L%
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.ServiceLoader;
import java.util.StringTokenizer;
public class SimpleWebServer extends NanoHTTPD {
/**
* Common mime type for dynamic content: binary
*/
public static final String MIME_DEFAULT_BINARY = "application/octet-stream";
/**
* Default Index file names.
*/
public static final List INDEX_FILE_NAMES = new ArrayList() {{
add("index.html");
add("index.htm");
}};
/**
* Hashtable mapping (String)FILENAME_EXTENSION -> (String)MIME_TYPE
*/
private static final Map MIME_TYPES = new HashMap() {{
put("css", "text/css");
put("htm", "text/html");
put("html", "text/html");
put("xml", "text/xml");
put("java", "text/x-java-source, text/java");
put("md", "text/plain");
put("txt", "text/plain");
put("asc", "text/plain");
put("gif", "image/gif");
put("jpg", "image/jpeg");
put("jpeg", "image/jpeg");
put("png", "image/png");
put("mp3", "audio/mpeg");
put("m3u", "audio/mpeg-url");
put("mp4", "video/mp4");
put("ogv", "video/ogg");
put("flv", "video/x-flv");
put("mov", "video/quicktime");
put("swf", "application/x-shockwave-flash");
put("js", "application/javascript");
put("pdf", "application/pdf");
put("doc", "application/msword");
put("ogg", "application/x-ogg");
put("zip", "application/octet-stream");
put("exe", "application/octet-stream");
put("class", "application/octet-stream");
}};
/**
* The distribution licence
*/
private static final String LICENCE =
"Copyright (c) 2012-2013 by Paul S. Hawke, 2001,2005-2013 by Jarno Elonen, 2010 by Konstantinos Togias\n"
+ "\n"
+ "Redistribution and use in source and binary forms, with or without\n"
+ "modification, are permitted provided that the following conditions\n"
+ "are met:\n"
+ "\n"
+ "Redistributions of source code must retain the above copyright notice,\n"
+ "this list of conditions and the following disclaimer. Redistributions in\n"
+ "binary form must reproduce the above copyright notice, this list of\n"
+ "conditions and the following disclaimer in the documentation and/or other\n"
+ "materials provided with the distribution. The name of the author may not\n"
+ "be used to endorse or promote products derived from this software without\n"
+ "specific prior written permission. \n"
+ " \n"
+ "THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n"
+ "IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES\n"
+ "OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.\n"
+ "IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,\n"
+ "INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT\n"
+ "NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
+ "DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
+ "THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
+ "(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
+ "OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.";
private static Map mimeTypeHandlers = new HashMap();
private final List rootDirs;
private final boolean quiet;
public SimpleWebServer(String host, int port, File wwwroot, boolean quiet) {
super(host, port);
this.quiet = quiet;
this.rootDirs = new ArrayList();
this.rootDirs.add(wwwroot);
this.init();
}
public SimpleWebServer(String host, int port, List wwwroots, boolean quiet) {
super(host, port);
this.quiet = quiet;
this.rootDirs = new ArrayList(wwwroots);
this.init();
}
/**
* Used to initialize and customize the server.
*/
public void init() {
}
/**
* Starts as a standalone file server and waits for Enter.
*/
public static void main(String[] args) {
// Defaults
int port = 8080;
String host = "127.0.0.1";
List rootDirs = new ArrayList();
boolean quiet = false;
Map options = new HashMap();
// Parse command-line, with short and long versions of the options.
for (int i = 0; i < args.length; ++i) {
if (args[i].equalsIgnoreCase("-h") || args[i].equalsIgnoreCase("--host")) {
host = args[i + 1];
} else if (args[i].equalsIgnoreCase("-p") || args[i].equalsIgnoreCase("--port")) {
port = Integer.parseInt(args[i + 1]);
} else if (args[i].equalsIgnoreCase("-q") || args[i].equalsIgnoreCase("--quiet")) {
quiet = true;
} else if (args[i].equalsIgnoreCase("-d") || args[i].equalsIgnoreCase("--dir")) {
rootDirs.add(new File(args[i + 1]).getAbsoluteFile());
} else if (args[i].equalsIgnoreCase("--licence")) {
System.out.println(LICENCE + "\n");
} else if (args[i].startsWith("-X:")) {
int dot = args[i].indexOf('=');
if (dot > 0) {
String name = args[i].substring(0, dot);
String value = args[i].substring(dot + 1, args[i].length());
options.put(name, value);
}
}
}
if (rootDirs.isEmpty()) {
rootDirs.add(new File(".").getAbsoluteFile());
}
options.put("host", host);
options.put("port", ""+port);
options.put("quiet", String.valueOf(quiet));
StringBuilder sb = new StringBuilder();
for (File dir : rootDirs) {
if (sb.length() > 0) {
sb.append(":");
}
try {
sb.append(dir.getCanonicalPath());
} catch (IOException ignored) {}
}
options.put("home", sb.toString());
ServiceLoader serviceLoader = ServiceLoader.load(WebServerPluginInfo.class);
for (WebServerPluginInfo info : serviceLoader) {
String[] mimeTypes = info.getMimeTypes();
for (String mime : mimeTypes) {
String[] indexFiles = info.getIndexFilesForMimeType(mime);
if (!quiet) {
System.out.print("# Found plugin for Mime type: \"" + mime + "\"");
if (indexFiles != null) {
System.out.print(" (serving index files: ");
for (String indexFile : indexFiles) {
System.out.print(indexFile + " ");
}
}
System.out.println(").");
}
registerPluginForMimeType(indexFiles, mime, info.getWebServerPlugin(mime), options);
}
}
ServerRunner.executeInstance(new SimpleWebServer(host, port, rootDirs, quiet));
}
protected static void registerPluginForMimeType(String[] indexFiles, String mimeType, WebServerPlugin plugin, Map commandLineOptions) {
if (mimeType == null || plugin == null) {
return;
}
if (indexFiles != null) {
for (String filename : indexFiles) {
int dot = filename.lastIndexOf('.');
if (dot >= 0) {
String extension = filename.substring(dot + 1).toLowerCase();
MIME_TYPES.put(extension, mimeType);
}
}
INDEX_FILE_NAMES.addAll(Arrays.asList(indexFiles));
}
mimeTypeHandlers.put(mimeType, plugin);
plugin.initialize(commandLineOptions);
}
private File getRootDir() {
return rootDirs.get(0);
}
private List getRootDirs() {
return rootDirs;
}
private void addWwwRootDir(File wwwroot) {
rootDirs.add(wwwroot);
}
/**
* URL-encodes everything between "/"-characters. Encodes spaces as '%20' instead of '+'.
*/
private String encodeUri(String uri) {
String newUri = "";
StringTokenizer st = new StringTokenizer(uri, "/ ", true);
while (st.hasMoreTokens()) {
String tok = st.nextToken();
if (tok.equals("/"))
newUri += "/";
else if (tok.equals(" "))
newUri += "%20";
else {
try {
newUri += URLEncoder.encode(tok, "UTF-8");
} catch (UnsupportedEncodingException ignored) {
}
}
}
return newUri;
}
public Response serve(IHTTPSession session) {
Map header = session.getHeaders();
Map parms = session.getParms();
String uri = session.getUri();
if (!quiet) {
System.out.println(session.getMethod() + " '" + uri + "' ");
Iterator e = header.keySet().iterator();
while (e.hasNext()) {
String value = e.next();
System.out.println(" HDR: '" + value + "' = '" + header.get(value) + "'");
}
e = parms.keySet().iterator();
while (e.hasNext()) {
String value = e.next();
System.out.println(" PRM: '" + value + "' = '" + parms.get(value) + "'");
}
}
for (File homeDir : getRootDirs()) {
// Make sure we won't die of an exception later
if (!homeDir.isDirectory()) {
return getInternalErrorResponse("given path is not a directory (" + homeDir + ").");
}
}
return respond(Collections.unmodifiableMap(header), session, uri);
}
private Response respond(Map headers, IHTTPSession session, String uri) {
// Remove URL arguments
uri = uri.trim().replace(File.separatorChar, '/');
if (uri.indexOf('?') >= 0) {
uri = uri.substring(0, uri.indexOf('?'));
}
// Prohibit getting out of current directory
if (uri.startsWith("src/main") || uri.endsWith("src/main") || uri.contains("../")) {
return getForbiddenResponse("Won't serve ../ for security reasons.");
}
boolean canServeUri = false;
File homeDir = null;
List roots = getRootDirs();
for (int i = 0; !canServeUri && i < roots.size(); i++) {
homeDir = roots.get(i);
canServeUri = canServeUri(uri, homeDir);
}
if (!canServeUri) {
return getNotFoundResponse();
}
// Browsers get confused without '/' after the directory, send a redirect.
File f = new File(homeDir, uri);
if (f.isDirectory() && !uri.endsWith("/")) {
uri += "/";
Response res = createResponse(Response.Status.REDIRECT, NanoHTTPD.MIME_HTML, "Redirected: " + uri + "");
res.addHeader("Location", uri);
return res;
}
if (f.isDirectory()) {
// First look for index files (index.html, index.htm, etc) and if none found, list the directory if readable.
String indexFile = findIndexFileInDirectory(f);
if (indexFile == null) {
if (f.canRead()) {
// No index file, list the directory if it is readable
return createResponse(Response.Status.OK, NanoHTTPD.MIME_HTML, listDirectory(uri, f));
} else {
return getForbiddenResponse("No directory listing.");
}
} else {
return respond(headers, session, uri + indexFile);
}
}
String mimeTypeForFile = getMimeTypeForFile(uri);
WebServerPlugin plugin = mimeTypeHandlers.get(mimeTypeForFile);
Response response = null;
if (plugin != null) {
response = plugin.serveFile(uri, headers, session, f, mimeTypeForFile);
if (response != null && response instanceof InternalRewrite) {
InternalRewrite rewrite = (InternalRewrite) response;
return respond(rewrite.getHeaders(), session, rewrite.getUri());
}
} else {
response = serveFile(uri, headers, f, mimeTypeForFile);
}
return response != null ? response : getNotFoundResponse();
}
protected Response getNotFoundResponse() {
return createResponse(Response.Status.NOT_FOUND, NanoHTTPD.MIME_PLAINTEXT,
"Error 404, file not found.");
}
protected Response getForbiddenResponse(String s) {
return createResponse(Response.Status.FORBIDDEN, NanoHTTPD.MIME_PLAINTEXT, "FORBIDDEN: "
+ s);
}
protected Response getInternalErrorResponse(String s) {
return createResponse(Response.Status.INTERNAL_ERROR, NanoHTTPD.MIME_PLAINTEXT,
"INTERNAL ERRROR: " + s);
}
private boolean canServeUri(String uri, File homeDir) {
boolean canServeUri;
File f = new File(homeDir, uri);
canServeUri = f.exists();
if (!canServeUri) {
String mimeTypeForFile = getMimeTypeForFile(uri);
WebServerPlugin plugin = mimeTypeHandlers.get(mimeTypeForFile);
if (plugin != null) {
canServeUri = plugin.canServeUri(uri, homeDir);
}
}
return canServeUri;
}
/**
* Serves file from homeDir and its' subdirectories (only). Uses only URI, ignores all headers and HTTP parameters.
*/
Response serveFile(String uri, Map header, File file, String mime) {
Response res;
try {
// Calculate etag
String etag = Integer.toHexString((file.getAbsolutePath() + file.lastModified() + "" + file.length()).hashCode());
// Support (simple) skipping:
long startFrom = 0;
long endAt = -1;
String range = header.get("range");
if (range != null) {
if (range.startsWith("bytes=")) {
range = range.substring("bytes=".length());
int minus = range.indexOf('-');
try {
if (minus > 0) {
startFrom = Long.parseLong(range.substring(0, minus));
endAt = Long.parseLong(range.substring(minus + 1));
}
} catch (NumberFormatException ignored) {
}
}
}
// Change return code and add Content-Range header when skipping is requested
long fileLen = file.length();
if (range != null && startFrom >= 0) {
if (startFrom >= fileLen) {
res = createResponse(Response.Status.RANGE_NOT_SATISFIABLE, NanoHTTPD.MIME_PLAINTEXT, "");
res.addHeader("Content-Range", "bytes 0-0/" + fileLen);
res.addHeader("ETag", etag);
} else {
if (endAt < 0) {
endAt = fileLen - 1;
}
long newLen = endAt - startFrom + 1;
if (newLen < 0) {
newLen = 0;
}
final long dataLen = newLen;
FileInputStream fis = new FileInputStream(file) {
@Override
public int available() throws IOException {
return (int) dataLen;
}
};
fis.skip(startFrom);
res = createResponse(Response.Status.PARTIAL_CONTENT, mime, fis);
res.addHeader("Content-Length", "" + dataLen);
res.addHeader("Content-Range", "bytes " + startFrom + "-" + endAt + "/" + fileLen);
res.addHeader("ETag", etag);
}
} else {
if (etag.equals(header.get("if-none-match")))
res = createResponse(Response.Status.NOT_MODIFIED, mime, "");
else {
res = createResponse(Response.Status.OK, mime, new FileInputStream(file));
res.addHeader("Content-Length", "" + fileLen);
res.addHeader("ETag", etag);
}
}
} catch (IOException ioe) {
res = getForbiddenResponse("Reading file failed.");
}
return res;
}
// Get MIME type from file name extension, if possible
private String getMimeTypeForFile(String uri) {
int dot = uri.lastIndexOf('.');
String mime = null;
if (dot >= 0) {
mime = MIME_TYPES.get(uri.substring(dot + 1).toLowerCase());
}
return mime == null ? MIME_DEFAULT_BINARY : mime;
}
// Announce that the file server accepts partial content requests
private Response createResponse(Response.Status status, String mimeType, InputStream message) {
Response res = new Response(status, mimeType, message);
res.addHeader("Accept-Ranges", "bytes");
return res;
}
// Announce that the file server accepts partial content requests
private Response createResponse(Response.Status status, String mimeType, String message) {
Response res = new Response(status, mimeType, message);
res.addHeader("Accept-Ranges", "bytes");
return res;
}
private String findIndexFileInDirectory(File directory) {
for (String fileName : INDEX_FILE_NAMES) {
File indexFile = new File(directory, fileName);
if (indexFile.exists()) {
return fileName;
}
}
return null;
}
protected String listDirectory(String uri, File f) {
String heading = "Directory " + uri;
StringBuilder msg = new StringBuilder("" + heading + "" +
"
" + heading + "
");
String up = null;
if (uri.length() > 1) {
String u = uri.substring(0, uri.length() - 1);
int slash = u.lastIndexOf('/');
if (slash >= 0 && slash < u.length()) {
up = uri.substring(0, slash + 1);
}
}
List files = Arrays.asList(f.list(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return new File(dir, name).isFile();
}
}));
Collections.sort(files);
List directories = Arrays.asList(f.list(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return new File(dir, name).isDirectory();
}
}));
Collections.sort(directories);
if (up != null || directories.size() + files.size() > 0) {
msg.append("
");
if (up != null || directories.size() > 0) {
msg.append("");
if (up != null) {
msg.append("
