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org.h2.server.web.WebThread Maven / Gradle / Ivy
/*
* Copyright 2004-2019 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.server.web;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.net.UnknownHostException;
import java.nio.charset.StandardCharsets;
import java.util.Iterator;
import java.util.Locale;
import java.util.Properties;
import java.util.StringTokenizer;
import org.h2.engine.SysProperties;
import org.h2.message.DbException;
import org.h2.util.IOUtils;
import org.h2.util.NetUtils;
import org.h2.util.NetworkConnectionInfo;
import org.h2.util.StringUtils;
import org.h2.util.Utils;
/**
* For each connection to a session, an object of this class is created.
* This class is used by the H2 Console.
*/
class WebThread extends WebApp implements Runnable {
protected OutputStream output;
protected final Socket socket;
private final Thread thread;
private InputStream input;
private String ifModifiedSince;
WebThread(Socket socket, WebServer server) {
super(server);
this.socket = socket;
thread = new Thread(this, "H2 Console thread");
}
/**
* Start the thread.
*/
void start() {
thread.start();
}
/**
* Wait until the thread is stopped.
*
* @param millis the maximum number of milliseconds to wait
*/
void join(int millis) throws InterruptedException {
thread.join(millis);
}
/**
* Close the connection now.
*/
void stopNow() {
this.stop = true;
try {
socket.close();
} catch (IOException e) {
// ignore
}
}
private String getAllowedFile(String requestedFile) {
if (!allow()) {
return "notAllowed.jsp";
}
if (requestedFile.length() == 0) {
return "index.do";
}
if (requestedFile.charAt(0) == '?') {
return "index.do" + requestedFile;
}
return requestedFile;
}
@Override
public void run() {
try {
input = new BufferedInputStream(socket.getInputStream());
output = new BufferedOutputStream(socket.getOutputStream());
while (!stop) {
if (!process()) {
break;
}
}
} catch (Exception e) {
DbException.traceThrowable(e);
}
IOUtils.closeSilently(output);
IOUtils.closeSilently(input);
try {
socket.close();
} catch (IOException e) {
// ignore
} finally {
server.remove(this);
}
}
@SuppressWarnings("unchecked")
private boolean process() throws IOException {
boolean keepAlive = false;
String head = readHeaderLine();
if (head.startsWith("GET ") || head.startsWith("POST ")) {
int begin = head.indexOf('/'), end = head.lastIndexOf(' ');
String file;
if (begin < 0 || end < begin) {
file = "";
} else {
file = StringUtils.trimSubstring(head, begin + 1, end);
}
trace(head + ": " + file);
file = getAllowedFile(file);
attributes = new Properties();
int paramIndex = file.indexOf('?');
session = null;
String key = null;
if (paramIndex >= 0) {
String attrib = file.substring(paramIndex + 1);
parseAttributes(attrib);
String sessionId = attributes.getProperty("jsessionid");
key = attributes.getProperty("key");
file = file.substring(0, paramIndex);
session = server.getSession(sessionId);
}
keepAlive = parseHeader();
file = processRequest(file,
new NetworkConnectionInfo(
NetUtils.ipToShortForm(new StringBuilder(server.getSSL() ? "https://" : "http://"),
socket.getLocalAddress().getAddress(), true) //
.append(':').append(socket.getLocalPort()).toString(), //
socket.getInetAddress().getAddress(), socket.getPort(), null));
if (file.length() == 0) {
// asynchronous request
return true;
}
String message;
byte[] bytes;
if (cache && ifModifiedSince != null &&
ifModifiedSince.equals(server.getStartDateTime())) {
bytes = null;
message = "HTTP/1.1 304 Not Modified\r\n";
} else {
bytes = server.getFile(file);
if (bytes == null) {
message = "HTTP/1.1 404 Not Found\r\n";
bytes = ("File not found: " + file).getBytes(StandardCharsets.UTF_8);
message += "Content-Length: " + bytes.length + "\r\n";
} else {
if (session != null && file.endsWith(".jsp")) {
if (key != null) {
session.put("key", key);
}
String page = new String(bytes, StandardCharsets.UTF_8);
if (SysProperties.CONSOLE_STREAM) {
Iterator it = (Iterator) session.map.remove("chunks");
if (it != null) {
message = "HTTP/1.1 200 OK\r\n";
message += "Content-Type: " + mimeType + "\r\n";
message += "Cache-Control: no-cache\r\n";
message += "Transfer-Encoding: chunked\r\n";
message += "\r\n";
trace(message);
output.write(message.getBytes());
while (it.hasNext()) {
String s = it.next();
s = PageParser.parse(s, session.map);
bytes = s.getBytes(StandardCharsets.UTF_8);
if (bytes.length == 0) {
continue;
}
output.write(Integer.toHexString(bytes.length).getBytes());
output.write("\r\n".getBytes());
output.write(bytes);
output.write("\r\n".getBytes());
output.flush();
}
output.write("0\r\n\r\n".getBytes());
output.flush();
return keepAlive;
}
}
page = PageParser.parse(page, session.map);
bytes = page.getBytes(StandardCharsets.UTF_8);
}
message = "HTTP/1.1 200 OK\r\n";
message += "Content-Type: " + mimeType + "\r\n";
if (!cache) {
message += "Cache-Control: no-cache\r\n";
} else {
message += "Cache-Control: max-age=10\r\n";
message += "Last-Modified: " + server.getStartDateTime() + "\r\n";
}
message += "Content-Length: " + bytes.length + "\r\n";
}
}
message += "\r\n";
trace(message);
output.write(message.getBytes());
if (bytes != null) {
output.write(bytes);
}
output.flush();
}
return keepAlive;
}
private String readHeaderLine() throws IOException {
StringBuilder buff = new StringBuilder();
while (true) {
int c = input.read();
if (c == -1) {
throw new IOException("Unexpected EOF");
} else if (c == '\r') {
if (input.read() == '\n') {
return buff.length() > 0 ? buff.toString() : null;
}
} else if (c == '\n') {
return buff.length() > 0 ? buff.toString() : null;
} else {
buff.append((char) c);
}
}
}
private void parseAttributes(String s) {
trace("data=" + s);
while (s != null) {
int idx = s.indexOf('=');
if (idx >= 0) {
String property = s.substring(0, idx);
s = s.substring(idx + 1);
idx = s.indexOf('&');
String value;
if (idx >= 0) {
value = s.substring(0, idx);
s = s.substring(idx + 1);
} else {
value = s;
}
String attr = StringUtils.urlDecode(value);
attributes.put(property, attr);
} else {
break;
}
}
trace(attributes.toString());
}
private boolean parseHeader() throws IOException {
boolean keepAlive = false;
trace("parseHeader");
int len = 0;
ifModifiedSince = null;
boolean multipart = false;
while (true) {
String line = readHeaderLine();
if (line == null) {
break;
}
trace(" " + line);
String lower = StringUtils.toLowerEnglish(line);
if (lower.startsWith("if-modified-since")) {
ifModifiedSince = getHeaderLineValue(line);
} else if (lower.startsWith("connection")) {
String conn = getHeaderLineValue(line);
if ("keep-alive".equals(conn)) {
keepAlive = true;
}
} else if (lower.startsWith("content-type")) {
String type = getHeaderLineValue(line);
if (type.startsWith("multipart/form-data")) {
multipart = true;
}
} else if (lower.startsWith("content-length")) {
len = Integer.parseInt(getHeaderLineValue(line));
trace("len=" + len);
} else if (lower.startsWith("user-agent")) {
boolean isWebKit = lower.contains("webkit/");
if (isWebKit && session != null) {
// workaround for what seems to be a WebKit bug:
// http://code.google.com/p/chromium/issues/detail?id=6402
session.put("frame-border", "1");
session.put("frameset-border", "2");
}
} else if (lower.startsWith("accept-language")) {
Locale locale = session == null ? null : session.locale;
if (locale == null) {
String languages = getHeaderLineValue(line);
StringTokenizer tokenizer = new StringTokenizer(languages, ",;");
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
if (!token.startsWith("q=")) {
if (server.supportsLanguage(token)) {
int dash = token.indexOf('-');
if (dash >= 0) {
String language = token.substring(0, dash);
String country = token.substring(dash + 1);
locale = new Locale(language, country);
} else {
locale = new Locale(token, "");
}
headerLanguage = locale.getLanguage();
if (session != null) {
session.locale = locale;
session.put("language", headerLanguage);
server.readTranslations(session, headerLanguage);
}
break;
}
}
}
}
} else if (StringUtils.isWhitespaceOrEmpty(line)) {
break;
}
}
if (multipart) {
// not supported
} else if (session != null && len > 0) {
byte[] bytes = Utils.newBytes(len);
for (int pos = 0; pos < len;) {
pos += input.read(bytes, pos, len - pos);
}
String s = new String(bytes);
parseAttributes(s);
}
return keepAlive;
}
private static String getHeaderLineValue(String line) {
return StringUtils.trimSubstring(line, line.indexOf(':') + 1);
}
@Override
protected String adminShutdown() {
stopNow();
return super.adminShutdown();
}
private boolean allow() {
if (server.getAllowOthers()) {
return true;
}
try {
return NetUtils.isLocalAddress(socket);
} catch (UnknownHostException e) {
server.traceError(e);
return false;
}
}
private void trace(String s) {
server.trace(s);
}
}
