// Wiki.java
// -----------------------
// part of the AnomicHTTPD caching proxy
// (C) by Michael Peter Christen; mc@yacy.net
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004
//
//$LastChangedDate$
//$LastChangedRevision$
//$LastChangedBy$
//
// 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
// Contains contributions from Alexander Schier [AS]
// and Marc Nause [MN]
// You must compile this file with
// javac -classpath .:../classes Wiki.java
// if the shell's current path is HTROOT
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Locale;
import java.util.Map;
import net.yacy.cora.document.UTF8;
import net.yacy.cora.protocol.HeaderFramework;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.kelondro.util.ByteBuffer;
import net.yacy.peers.NewsPool;
import net.yacy.search.Switchboard;
import de.anomic.data.Diff;
import de.anomic.data.wiki.WikiBoard;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
public class Wiki {
private static final String ANONYMOUS = "anonymous";
//private static String ListLevel = "";
//private static String numListLevel = "";
private static SimpleDateFormat SimpleFormatter = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.US);
public static String dateString(final Date date) {
return SimpleFormatter.format(date);
}
public static serverObjects respond(final RequestHeader header, serverObjects post, final serverSwitch env) throws IOException {
final Switchboard sb = (Switchboard) env;
final serverObjects prop = new serverObjects();
if (post == null) {
post = new serverObjects();
post.put("page", "start");
}
prop.put("topmenu", sb.getConfigBool("publicTopmenu", true) ? 1 : 0);
String access = sb.getConfig("WikiAccess", "admin");
final String pagename = get(post, "page", "start");
final String ip = get(post, HeaderFramework.CONNECTION_PROP_CLIENTIP, "127.0.0.1");
String author = get(post, "author", ANONYMOUS);
if (author.equals(ANONYMOUS)) {
author = WikiBoard.guessAuthor(ip);
if (author == null) {
author = (sb.peers.mySeed() == null) ? ANONYMOUS : sb.peers.mySeed().get("Name", ANONYMOUS);
}
}
if (post != null && post.containsKey("access")) {
// only the administrator may change the access right
if (!sb.verifyAuthentication(header)) {
// check access right for admin
prop.put("AUTHENTICATE", "admin log-in"); // force log-in
return prop;
}
access = post.get("access", "admin");
sb.setConfig("WikiAccess", access);
}
if (access.equals("admin")) {
prop.put("mode_access", "0");
} else if (access.equals("all")) {
prop.put("mode_access", "1");
}
WikiBoard.Entry page = sb.wikiDB.read(pagename);
if (post != null && post.containsKey("submit")) {
if ((access.equals("admin") && (!sb.verifyAuthentication(header)))) {
// check access right for admin
prop.put("AUTHENTICATE", "admin log-in"); // force log-in
return prop;
}
// store a new page
byte[] content;
content = UTF8.getBytes(post.get("content", ""));
final WikiBoard.Entry newEntry = sb.wikiDB.newEntry(pagename, author, ip, post.get("reason", "edit"), content);
sb.wikiDB.write(newEntry);
// create a news message
final Map<String, String> map = new HashMap<String, String>();
map.put("page", pagename);
map.put("author", author.replace(',', ' '));
if (!sb.isRobinsonMode() && post.get("content", "").trim().length() > 0 && !ByteBuffer.equals(page.page(), content)) {
sb.peers.newsPool.publishMyNews(sb.peers.mySeed(), NewsPool.CATEGORY_WIKI_UPDATE, map);
}
page = newEntry;
prop.putHTML("LOCATION", "/Wiki.html?page=" + pagename);
prop.put("LOCATION", prop.get("LOCATION"));
}
if (post != null && post.containsKey("edit")) {
if ((access.equals("admin") && (!sb.verifyAuthentication(header)))) {
// check access right for admin
prop.put("AUTHENTICATE", "admin log-in"); // force log-in
return prop;
}
prop.put("mode", "1"); //edit
prop.putHTML("mode_author", author);
prop.putHTML("mode_page-code", UTF8.String(page.page()));
prop.putHTML("mode_pagename", pagename); }
//contributed by [MN]
else if (post != null && post.containsKey("preview")) {
// preview the page
prop.put("mode", "2");//preview
prop.putHTML("mode_pagename", pagename);
prop.putHTML("mode_author", author);
prop.put("mode_date", dateString(new Date()));
prop.putWiki(sb.peers.mySeed().getClusterAddress(), "mode_page", post.get("content", ""));
prop.putHTML("mode_page-code", post.get("content", ""));
}
//end contrib of [MN]
else if (post != null && post.containsKey("index")) {
// view an index
prop.put("mode", "3"); //Index
try {
final Iterator<byte[]> i = sb.wikiDB.keys(true);
int count=0;
while (i.hasNext()) {
final String subject = UTF8.String(i.next());
final WikiBoard.Entry entry = sb.wikiDB.read(subject);
prop.putHTML("mode_pages_" + count + "_name",WikiBoard.webalize(subject));
prop.putHTML("mode_pages_" + count + "_subject", subject);
prop.put("mode_pages_" + count + "_date", dateString(entry.date()));
prop.putHTML("mode_pages_" + count + "_author", entry.author());
count++;
}
prop.put("mode_pages", count);
} catch (final IOException e) {
prop.put("mode_error", "1"); //IO Error reading Wiki
prop.putHTML("mode_error_message", e.getMessage());
}
prop.putHTML("mode_pagename", pagename);
} else if (post != null && post.containsKey("diff")) {
// Diff
prop.put("mode", "4");
prop.putHTML("mode_page", pagename);
prop.putHTML("mode_error_page", pagename);
try {
final Iterator<byte[]> it = sb.wikiDB.keysBkp(true);
WikiBoard.Entry entry;
WikiBoard.Entry oentry = null;
WikiBoard.Entry nentry = null;
int count = 0;
boolean oldselected = false, newselected = false;
while (it.hasNext()) {
entry = sb.wikiDB.readBkp(UTF8.String(it.next()));
prop.put("mode_error_versions_" + count + "_date", WikiBoard.dateString(entry.date()));
prop.put("mode_error_versions_" + count + "_fdate", dateString(entry.date()));
if (WikiBoard.dateString(entry.date()).equals(post.get("old", null))) {
prop.put("mode_error_versions_" + count + "_oldselected", "1");
oentry = entry;
oldselected = true;
} else if (WikiBoard.dateString(entry.date()).equals(post.get("new", null))) {
prop.put("mode_error_versions_" + count + "_newselected", "1");
nentry = entry;
newselected = true;
}
count++;
}
count--; // don't show current version
if (!oldselected) { // select latest old entry
prop.put("mode_error_versions_" + (count - 1) + "_oldselected", "1");
}
if (!newselected) { // select latest new entry (== current)
prop.put("mode_error_curselected", "1");
}
if (count == 0) {
prop.put("mode_error", "2"); // no entries found
} else {
prop.put("mode_error_versions", count);
}
entry = sb.wikiDB.read(pagename);
if (entry != null) {
prop.put("mode_error_curdate", WikiBoard.dateString(entry.date()));
prop.put("mode_error_curfdate", dateString(entry.date()));
}
if (nentry == null) {
nentry = entry;
}
if (post.containsKey("compare") && oentry != null && nentry != null) {
// TODO: split into paragraphs and compare them with the same diff-algo
final Diff diff = new Diff(
UTF8.String(oentry.page()),
UTF8.String(nentry.page()), 3);
prop.put("mode_versioning_diff", de.anomic.data.Diff.toHTML(new Diff[] { diff }));
prop.put("mode_versioning", "1");
} else if (post.containsKey("viewold") && oentry != null) {
prop.put("mode_versioning", "2");
prop.putHTML("mode_versioning_pagename", pagename);
prop.putHTML("mode_versioning_author", oentry.author());
prop.put("mode_versioning_date", dateString(oentry.date()));
prop.putWiki(sb.peers.mySeed().getClusterAddress(), "mode_versioning_page", oentry.page());
prop.putHTML("mode_versioning_page-code", UTF8.String(oentry.page()));
}
} catch (final IOException e) {
prop.put("mode_error", "1"); //IO Error reading Wiki
prop.putHTML("mode_error_message", e.getMessage());
}
}
else {
// show page
prop.put("mode", "0"); //viewing
prop.putHTML("mode_pagename", pagename);
prop.putHTML("mode_author", page.author());
prop.put("mode_date", dateString(page.date()));
prop.putWiki(sb.peers.mySeed().getClusterAddress(), "mode_page", page.page());
prop.put("controls", "0");
prop.putHTML("controls_pagename", pagename);
}
// return rewrite properties
return prop;
}
/**
* get key from post, use dflt if (not present or post == null)
*
* @param post
* @param string
* @param string2
* @return
*/
private static String get(final serverObjects post, final String key, final String dflt) {
return (post == null ? dflt : post.get(key, dflt));
}
}