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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.core.client.server;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.logging.Level;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.osee.framework.core.client.CoreClientActivator;
import org.eclipse.osee.framework.jdk.core.util.Strings;
import org.eclipse.osee.framework.logging.OseeLog;
/**
* @author Roberto E. Escobar
*/
public class HttpRequest {
public enum HttpMethod {
GET,
POST,
PUT,
DELETE,
RESOURCE_GET,
INVALID;
}
private final Map<String, String> parameterMap;
private String rawRequest;
private String urlRequest;
private final Map<String, String> httpHeader;
private String httpProtocol;
private final InputStream inputStream;
private HttpMethod httpMethod;
private final InetAddress remoteAddress;
private final int remotePort;
private final Socket socket;
protected HttpRequest(Socket socket) throws Exception {
this.socket = socket;
this.parameterMap = new HashMap<String, String>();
this.rawRequest = "";
this.urlRequest = "";
this.httpHeader = new HashMap<String, String>();
this.httpMethod = HttpMethod.INVALID;
this.inputStream = new BufferedInputStream(socket.getInputStream());
this.remoteAddress = socket.getInetAddress();
this.remotePort = socket.getPort();
initialize();
}
private void initialize() throws Exception {
InputStream inputStream = getInputStream();
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
int value = -1;
char lastChar = 0;
char currChar = 0;
while ((value = inputStream.read()) != -1) {
currChar = (char) value;
if (currChar != '\n' && currChar != '\r') {
buffer.write((byte) value);
}
if (lastChar == '\r' && currChar == '\n') {
String toProcess = buffer.toString("ISO-8859-1");
buffer.reset();
if (Strings.isValid(toProcess)) {
if (toProcess.contains("HTTP")) {
parseRequest(toProcess);
} else {
parseHeader(toProcess);
}
} else {
break;
}
}
lastChar = currChar;
}
}
private void parseHeader(String line) throws Exception {
Matcher matcher = Pattern.compile("(.*?):\\s*(.*)").matcher(line);
if (matcher.matches()) {
httpHeader.put(matcher.group(1), matcher.group(2));
}
}
public String getParameter(String key) {
String toReturn = parameterMap.get(key);
return Strings.isValid(toReturn) ? toReturn : "";
}
public Set<String> getParameterKeys() {
return parameterMap.keySet();
}
public String getParametersAsString() {
return parameterMap.toString();
}
public Map<String, String> getParameters() {
return parameterMap;
}
public InputStream getInputStream() {
return inputStream;
}
public HttpMethod getMethod() {
return httpMethod;
}
public InetAddress getOriginatingAddress() {
return remoteAddress;
}
public int getOriginatingPort() {
return remotePort;
}
public String getHttpHeaderEntry(String key) {
String toReturn = httpHeader.get(key);
return Strings.isValid(toReturn) ? toReturn : "";
}
public Set<String> getHttpHeaderKeys() {
return httpHeader.keySet();
}
public String getHttpProtocol() {
return httpProtocol;
}
public String getUrlRequest() {
return urlRequest;
}
public String getRawRequest() {
return rawRequest;
}
public Socket getSocket() {
return socket;
}
private void parseRequest(String entry) throws Exception {
this.rawRequest = entry;
OseeLog.log(CoreClientActivator.class, Level.INFO, "HttpRequest *" + rawRequest + "*");
String[] entries = rawRequest.split("\\s");
if (entries.length > 0 && entries.length < 4) {
httpMethod = HttpMethod.valueOf(entries[0].trim());
httpProtocol = entries[2].trim();
String request = entries[1].trim();
boolean wasOldStyle = parseOldSchoolStyleLinks(request);
if (wasOldStyle == false) {
parseNewStyleRequests(request);
}
}
}
/**
* Process new style requests are of the following format:
* http://127.0.0.1:<port>/<ProcessType>?key1=value1&key2=value2...&key3=value3
*/
private void parseNewStyleRequests(String request) throws Exception {
String noHostStr = request.replaceFirst("^http:\\/\\/(.*?)\\/", "/");
Matcher matcher = Pattern.compile("/(.*?)\\?(.*)").matcher(noHostStr);
if (matcher.matches()) {
urlRequest = matcher.group(1);
if (!Strings.isValid(urlRequest)) {
throw new IllegalArgumentException("Unknown requestType \"" + rawRequest + "\"");
}
String data = matcher.group(2);
Matcher dataMatcher = Pattern.compile("([^&]*?)=([^&]*)").matcher(data);
while (dataMatcher.find()) {
parameterMap.put(dataMatcher.group(1), URLDecoder.decode(dataMatcher.group(2), "UTF-8"));
}
} else {
if (httpMethod.equals(HttpMethod.GET)) {
httpMethod = HttpMethod.RESOURCE_GET;
}
urlRequest = request;
}
}
/**
* Process old format: http://127.0.0.1:<port>/get/guid/<guid>/<ats,Define> TODO old format should be removed once
* all legacy references are change to new format
*
* @return
*/
private boolean parseOldSchoolStyleLinks(String entry) throws Exception {
boolean handled = false;
Matcher oldMatcher = Pattern.compile("/(.*?)/guid/(.*?)/(.*)").matcher(entry);
if (oldMatcher.find()) {
handled = true;
String guid = oldMatcher.group(2);
if (oldMatcher.groupCount() > 2) {
String processType = oldMatcher.group(3);
if (processType.equals("ats")) {
parameterMap.put("guid", guid);
urlRequest = processType.toUpperCase();
} else if (processType.equals("Define") || processType.equals("")) {
parameterMap.put("guid", guid);
urlRequest = "Define";
} else {
throw new IllegalArgumentException("Unnable to parse old style link: \"" + rawRequest + "\"");
}
}
}
return handled;
}
}
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