User:Gracenotes/Java code
Java classes
The following classes would be useful for making a bot in java.
WikiSessionManager.java
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.Arrays;
import java.net.URL;
import java.net.URLEncoder;
import java.net.URLConnection;
/**
* WikiSessionManager is a utility class that logs into the English
* Wikipedia and facilitates making HTTP requests with cookies.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* @author Gracenotes
* @version 0.1
**/
public class WikiSessionManager
{
private String cookie, sessionData, username;
private boolean loggedIn;
public WikiSessionManager()
{
this.loggedIn = false;
this.sessionData = "";
this.cookie = "";
}
public void userLogin(String username, char[] password) throws IOException
{
username = username.trim();
if (username.length() == 0 || password.length == 0) throw new IllegalArgumentException("Blank parameter");
URL url = new URL("http://en.wikipedia.org/w/api.php");
URLConnection connection = url.openConnection();
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
OutputStreamWriter output = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
String token = "login_"+System.currentTimeMillis();
output.write("action=login" +
"&lgname=" + URLEncoder.encode(username, "UTF-8") +
"&lgpassword=" + URLEncoder.encode(new String(password).trim(), "UTF-8") +
"&lgtoken=" + URLEncoder.encode(token, "UTF-8")
);
output.flush();
output.close();
Arrays.fill(password, ' ');
// Send request and get code
int code = connection.getResponseCode();
if (code != HttpURLConnection.HTTP_OK)
throw new IOException("HTTP error "+code+": "+connection.getResponseMessage());
String headerName;
StringBuffer receivedCookie = new StringBuffer();
int i = 0;
while ((headerName = connection.getHeaderFieldKey(i)) != null)
{
if (headerName != null && headerName.equalsIgnoreCase("Set-Cookie"))
{
if (receivedCookie.length()>0) receivedCookie.append("; ");
receivedCookie.append(connection.getHeaderField(i).split(";")[0]);
}
i++;
}
this.cookie = receivedCookie.toString();
this.loggedIn = this.cookie.contains("Token=");
this.username = this.loggedIn ? username : null;
}
public void userLogout() throws IOException
{
if (!this.loggedIn)
return;
URL url = new URL("http://en.wikipedia.org/w/index.php?title=Special:Userlogout");
URLConnection connection = url.openConnection();
this.addCookies(connection);
connection.connect();
this.loggedIn = false;
this.cookie = "";
this.sessionData = "";
}
/**
* Indicates whether a user is logged in or not
*
* @return A boolean showing whether a user is logged in or not
*/
public boolean isLoggedIn()
{
return this.loggedIn;
}
public void addCookies(URLConnection connection)
{
if (!this.loggedIn)
return;
connection.setRequestProperty("Cookie", this.cookie +
(this.sessionData != null ? "; " + this.sessionData : ""));
connection.setRequestProperty("User-Agent", this.username);
}
public boolean findSessionData(URLConnection connection)
{
sessionData = "";
String headerName;
int i = 0;
while ((headerName = connection.getHeaderFieldKey(++i)) != null)
{
if (headerName.equals("Set-Cookie") && connection.getHeaderField(i).contains("_session"))
this.sessionData = connection.getHeaderField(i).split(";")[0];
}
return this.sessionData.length() != 0;
}
}
WikiEdit
import java.io.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import java.net.URL;
import java.net.URLEncoder;
import java.net.URLConnection;
/**
* WikiEdit is a class that depends on WikiSessionManager. It gets wikitext
* of articles and edits them
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* @author Gracenotes
* @version 0.1
**/
public class WikiEdit
{
private WikiSessionManager session;
private boolean maxlagDo; //TODO: implement MaxLag stuff
private int maxlagLimit, maxlagTime;
public WikiEdit(WikiSessionManager session) throws IOException
{
this.session = session;
this.maxlagDo = false;
this.maxlagLimit = 0;
this.maxlagTime = 5;
}
public boolean isLoggedIn()
{
return session.isLoggedIn();
}
public String getWikitext(String page) throws IOException
{
URL url = new URL("http://en.wikipedia.org/w/api.php?titles=" + URLEncoder.encode(page, "UTF-8") +
"&action=query&prop=revisions&rvprop=content&format=xml");
URLConnection connection = url.openConnection();
session.addCookies(connection);
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
StringBuffer responseText = new StringBuffer();
String line;
while ((line = reader.readLine()) != null)
{
responseText.append(line + "\n");
}
line = responseText.toString();
int pos = line.indexOf("<rev>");
if (pos == -1)
line = null;
else
line = line.substring(pos + 5, line.lastIndexOf("</rev>")).replace("<", "<").replace(">", ">").replace(""", "\"").replace("'", "'").replace("&", "&");
reader.close();
return line;
}
public void editPage(String page, String wikitext, String editsum, boolean minor) throws IOException
{
if (!this.isLoggedIn())
{
System.err.println("Not logged in.");
return;
}
String pageURL = "http://en.wikipedia.org/w/index.php?title=" + URLEncoder.encode(page, "UTF-8");
URL url = new URL(pageURL + "&action=edit");
URLConnection connection = url.openConnection();
session.addCookies(connection);
connection.connect();
session.findSessionData(connection);
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
StringBuffer textToSend = new StringBuffer();
String line;
Pattern pattern = Pattern.compile("<input type='hidden' value=\"(.*?)\" name=\"(.*?)\" />");
while ((line = reader.readLine()) != null)
{
if (line.contains("<input type='hidden'"))
{
Matcher matcher = pattern.matcher(line);
matcher.find();
String name = matcher.group(2);
String value = matcher.group(1);
if (name.equals("wpStarttime"))
textToSend.append("&wpStarttime=" + value);
if (name.equals("wpEdittime"))
textToSend.append("&wpEdittime=" + value);
if (name.equals("wpEditToken"))
textToSend.append("&wpEditToken=" + URLEncoder.encode(value, "UTF-8"));
}
}
reader.close();
textToSend.append("&wpTextbox1=" + URLEncoder.encode(wikitext, "UTF-8"));
textToSend.append("&wpSummary=" + URLEncoder.encode(editsum, "UTF-8"));
if (minor)
textToSend.append("&wpMinoredit=0");
textToSend.deleteCharAt(0);
//now, send the data
url = new URL(pageURL + "&action=submit");
connection = url.openConnection();
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
session.addCookies(connection);
OutputStreamWriter output = new OutputStreamWriter(connection.getOutputStream(), "UTF-8");
output.write(textToSend.toString());
output.flush();
output.close();
BufferedReader input = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
line = input.readLine();
/* StringBuffer responseText = new StringBuffer();
while ((line = input.readLine()) != null)
{
responseText.append(line + "\n");
}
//this code can be used to read the response
*/
}
}
WikiEditTest
import java.net.*;
import java.io.*;
public class WikiEditTest
{
public static void main() throws IOException
{
WikiSessionManager sessionMgr = new WikiSessionManager();
sessionMgr.userLogin("Gracenotes", "password".toCharArray());
WikiEdit edit = new WikiEdit(sessionMgr);
if (!edit.isLoggedIn())
{
System.out.println("Not logged in");
return;
}
edit.editPage("User:Gracenotes/Sandbox", edit.getWikitext("User:Gracenotes/Sandbox") + "\nAddendum", "minor test edit", true);
}
}
The above code would result in this.