+// Copyright 2000-2005 the Contributors, as shown in the revision logs.
+// Licensed under the Apache Public Source License 2.0 ("the License").
+// You may not use this file except in compliance with the License.
+
package org.ibex.mail.target;
import org.prevayler.*;
import org.ibex.mail.*;
import java.net.*;
import java.util.*;
import java.text.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
/** An exceptionally crude implementation of Mailbox relying on POSIXy filesystem semantics */
public class FileBasedMailbox extends Mailbox.Default {
public static final long MAGIC_DATE = 0;
-
private static final char slash = File.separatorChar;
private static final WeakHashMap<String,FileBasedMailbox> instances = new WeakHashMap<String,FileBasedMailbox>();
public String toString() { return "[FileBasedMailbox " + path.getAbsolutePath() + "]"; }
}
}
-
// Instance //////////////////////////////////////////////////////////////////////////////
private File path;
private FileLock lock;
- private Prevayler prevayler;
- private Cache cache;
-
- public static class Cache implements Serializable {
- public final int uidValidity = Math.abs(new Random().nextInt());
- private final Hashtable<String,Entry> byname = new Hashtable<String,Entry>();
- private final Hashtable<Integer,Entry> byuid = new Hashtable<Integer,Entry>();
- private final ArrayList<Entry> linear = new ArrayList<Entry>();
- public final File dir;
- private int uidNext = 0;
-
- public Cache(File dir) { this.dir = dir; }
-
- public void init(final Prevayler prevayler) throws IOException {
- dir.mkdirs();
- long time = System.currentTimeMillis();
- Log.info(this, "initializing maildir " + dir.getParent());
-
- // Drop entries whose files have vanished
- ArrayList<Transaction> kill = new ArrayList<Transaction>();
- for(String s : byname.keySet())
- if (!new File(dir.getParent() + slash + s).exists())
- kill.add(byname.get(s).delete(null));
- for(Transaction t : kill) prevayler.execute(t);
-
- // Make entries for new files which have appeared
- for(String file : new File(dir.getParent()).list()) {
- File f = new File(dir.getParent() + slash + file);
- if (file.charAt(0)!='.' && !f.isDirectory()) {
- Entry e = get(file);
- if (e == null)
- prevayler.execute(Entry.create(f));
- else if ((f.lastModified() == MAGIC_DATE) != e.seen())
- prevayler.execute(e.seen(f, !e.seen()));
- }
- }
-
- // Take a snapshot for posterity
- if (System.currentTimeMillis() - time > 1000 * 5)
- Log.info(this, " done initializing maildir " + dir.getParent());
- new Thread() { public void run() {
- try { prevayler.takeSnapshot(); } catch (Exception e) { Log.error(this, e); } } }.start();
- }
-
-
- public synchronized int size() { return linear.size(); }
- public synchronized int uidNext() { return uidNext; }
- public synchronized Entry get(int uid) { return byuid.get(uid); }
- public synchronized Entry getLinear(int num) { return linear.get(num); }
- public synchronized Entry get(String name) { return byname.get(name); }
-
- public static class Entry implements Serializable {
- private final byte[] header;
- public final String name;
- public final int uid;
- private boolean seen;
- private Entry(String name, boolean seen, int uid, byte[] header) {
- this.name = name; this.seen = seen; this.uid = uid; this.header = header; }
-
- // Accessors //////////////////////////////////////////////////////////////////////////////
-
- public boolean seen() { return seen; }
- public MIME.Headers headers() { return new MIME.Headers(new Stream(new ByteArrayInputStream(header)), true); }
- public Message message(Cache cache) { try {
- FileInputStream fis = null;
- try {
- fis = new FileInputStream(cache.dir.getParent() + slash + name);
- return Message.newMessage(new Stream(fis));
- } finally { if (fis != null) fis.close(); }
- } catch (IOException e) { throw new MailException.IOException(e);
- } catch (Message.Malformed e) { throw new MailException(e.getMessage()); }
- }
-
- // Transactions //////////////////////////////////////////////////////////////////////////////
-
- public static Transaction create(File f) throws IOException {
- final boolean seen = f.lastModified() == MAGIC_DATE;
- final String name = f.getName();
- final byte[] header = new MIME.Headers(new Stream(new FileInputStream(f)), true).toString().getBytes();
- return new Transaction() {
- public void executeOn(Object o, Date now) {
- Cache cache = (Cache)o;
- synchronized(cache) {
- Entry e = new Entry(name, seen, cache.uidNext++, header);
- cache.linear.add(e);
- cache.byuid.put(e.uid, e);
- cache.byname.put(e.name, e);
- } } };
- }
-
- public Transaction seen(File f, final boolean seen) {
- f.setLastModified(seen ? MAGIC_DATE : System.currentTimeMillis());
- final int uid = this.uid;
- return new Transaction() {
- public void executeOn(Object o, Date now) {
- Cache cache = (Cache)o;
- synchronized(cache) {
- cache.get(uid).seen = seen;
- } } };
- }
- public Transaction delete(File f) {
- if (f != null && f.exists()) f.delete();
- final int uid = this.uid;
- return new Transaction() {
- public void executeOn(Object o, Date now) {
- Cache cache = (Cache)o;
- synchronized(cache) {
- Cache.Entry e = cache.get(uid);
- cache.byname.remove(e.name);
- cache.linear.remove(e);
- cache.byuid.remove(uid);
- } } };
- }
- }
- }
+ private int uidNext;
+ private int uidValidity;
// Helpers //////////////////////////////////////////////////////////////////////////////
path.mkdirs();
// acquire lock
- lock = new RandomAccessFile(this.path.getAbsolutePath() + slash + ".lock", "rw").getChannel().tryLock();
+ File lockfile = new File(this.path.getAbsolutePath() + slash + ".lock");
+ lock = new RandomAccessFile(lockfile, "rw").getChannel().tryLock();
if (lock == null) throw new IOException("unable to lock FileBasedMailbox");
-
- File cacheDir = new File(path.getAbsolutePath() + slash + ".cache");
- try {
- prevayler = PrevaylerFactory.createPrevayler(new Cache(cacheDir), cacheDir.getAbsolutePath());
- cache = (Cache)prevayler.prevalentSystem();
- } catch (Throwable t) {
- Log.warn(this, "error while attempting to reconstitute a FileBasedMailbox.cache:");
- Log.warn(this, t);
- Log.warn(this, "discarding cache...");
- rmDashRf(cacheDir);
- prevayler = PrevaylerFactory.createPrevayler(new Cache(cacheDir), cacheDir.getAbsolutePath());
- cache = (Cache)prevayler.prevalentSystem();
+ uidValidity = (int)(lockfile.lastModified() & 0xffffffff);
+ uidNext = 0;
+ String[] files = path.list();
+ for(int i=0; i<files.length; i++) {
+ try {
+ if (files[i].indexOf('.') != -1) files[i] = files[i].substring(0, files[i].indexOf('.'));
+ int n = Integer.parseInt(files[i]);
+ if (n>=uidNext) uidNext = n;
+ } catch(Exception e) { /* DELIBERATE */ }
}
- cache.init(prevayler);
}
public Mailbox.Iterator iterator() { return new Iterator(); }
- public int uidValidity() { return cache.uidValidity; }
public synchronized void add(Message message) { add(message, Mailbox.Flag.RECENT); }
public String[] children() {
Vec vec = new Vec();
return (String[])vec.copyInto(new String[vec.size()]);
}
- public int uidNext() { return cache.uidNext(); }
+ public int uidValidity() { return uidValidity; }
+ public int uidNext() { return uidNext; }
public synchronized void add(Message message, int flags) {
try {
String name, fullname; File target, f;
- for(int i = cache.uidNext(); ; i++) {
+ for(int i = uidNext; ; i++) {
name = i + ".";
fullname = path.getAbsolutePath() + slash + name;
target = new File(fullname);
if (!f.exists() && !target.exists()) break;
Log.error(this, "aieeee!!!! target of add() already exists: " + target.getAbsolutePath());
}
- FileOutputStream fo = new FileOutputStream(f);
- Stream stream = new Stream(fo);
- message.dump(stream);
- fo.close();
+ Stream stream = new Stream(new FileOutputStream(f));
+ message.getStream().transcribe(stream);
+ stream.close();
f.renameTo(new File(fullname));
+ uidNext++;
f = new File(fullname);
if ((flags & Mailbox.Flag.SEEN) == Mailbox.Flag.SEEN) f.setLastModified(MAGIC_DATE);
- prevayler.execute(Cache.Entry.create(f));
} catch (IOException e) { throw new MailException.IOException(e); }
Log.info(this, path + " <= " + message.summary());
}
private class Iterator extends Mailbox.Default.Iterator {
int cur = -1;
- private Cache.Entry entry() { return cache.getLinear(cur); }
- private File file() { return new File(cache.dir.getParent() + slash + entry().name); }
- public MIME.Headers head() { return done() ? null : entry().headers(); }
- public boolean done() { return cur >= cache.size(); }
+ String[] files = path.list(new FilenameFilter() { public boolean accept(File dir, String name) {
+ return name.endsWith(".");
+ } });
+ private File file() { return new File(path.getAbsolutePath() + slash + files[cur]); }
+ public boolean done() { return cur >= files.length; }
public boolean next() { cur++; return !done(); }
- public boolean seen() { return done() ? false : entry().seen(); }
+ public boolean seen() { return false; }
+ public boolean recent() { return false; }
public int num() { return cur+1; } // EUDORA insists that message numbers start at 1, not 0
- public int uid() { return done() ? -1 : entry().uid; }
- public void delete() { prevayler.execute(entry().delete(file())); }
- public void seen(boolean seen) { prevayler.execute(entry().seen(file(), seen)); }
- public Message cur() { return entry().message(cache); }
+ public int uid() { return done() ? -1 : Integer.parseInt(files[cur].substring(0, files[cur].length()-1)); }
+ public void delete() { File f = file(); if (f != null && f.exists()) f.delete(); }
+ public void seen(boolean seen) { }
+ public Headers head() {
+ if (done()) return null;
+ FileInputStream fis = null;
+ try {
+ return new Headers(new Stream(new FileInputStream(file())));
+ } catch (IOException e) { throw new MailException.IOException(e);
+ } finally { if (fis != null) try { fis.close(); } catch (Exception e) { /* DELIBERATE */ } }
+ }
+ public Message cur() {
+ FileInputStream fis = null;
+ try {
+ return Message.newMessage(new Fountain.File(file()));
+ //} catch (IOException e) { throw new MailException.IOException(e);
+ } catch (Message.Malformed e) { throw new MailException(e.getMessage());
+ } finally { if (fis != null) try { fis.close(); } catch (Exception e) { /* DELIBERATE */ } }
+ }
}
+ public static class Servlet extends HttpServlet {
+ public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {doGet(request, response);}
+ private void frames(HttpServletRequest request, HttpServletResponse response, boolean top) throws IOException {
+ String basename = request.getServletPath();
+ PrintWriter pw = new PrintWriter(response.getWriter());
+ pw.println("<html>");
+ if (top) {
+ pw.println(" <frameset rows='30%,*'>");
+ pw.println(" <frame src='"+basename+"?frame=top' marginwidth=0 marginheight=0 name=top/>");
+ pw.println(" <frame src='"+basename+"?frame=bottom' marginwidth=0 marginheight=0 name='bottom'/>");
+ } else {
+ pw.println(" <frameset cols='150,*'>");
+ pw.println(" <frame src='"+basename+"?frame=topleft' marginwidth=0 marginheight=0 name=topleft/>");
+ pw.println(" <frame src='"+basename+"?frame=topright' marginwidth=0 marginheight=0 name=topright/>");
+ }
+ pw.println(" </frameset>");
+ pw.println("</html>");
+ pw.flush();
+ }
+
+ public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
+ String frame = request.getParameter("frame");
+ String basename = request.getServletPath();
+
+ if (frame == null) { frames(request, response, true); return; }
+ if (frame.equals("top")) { frames(request, response, false); return; }
+ if (frame.equals("topleft")) { return; }
+
+ if (request.getServletPath().indexOf("..") != -1) throw new IOException(".. not allowed in image paths");
+ ServletContext cx = getServletContext();
+ String path = cx.getRealPath(request.getServletPath());
+ Mailbox mbox = FileBasedMailbox.getFileBasedMailbox(path, false);
+ if (mbox == null) throw new IOException("no such mailbox: " + path);
+
+ Vec msgs = new Vec();
+ for(Mailbox.Iterator it = mbox.iterator(); it.next();) {
+ String[] s = new String[4];
+ Message m = it.cur();
+ s[0] = (m.from==null?"":m.from.toString(true));
+ s[1] = m.subject;
+ s[2] = (m.date + "").trim().replaceAll(" "," ");
+ s[3] = it.num() + "";
+ msgs.addElement(s);
+ }
+ String[][] messages;
+ msgs.copyInto(messages = new String[msgs.size()][]);
+
+ if ("bottom".equals(frame)) { bottom(request, response, messages, mbox); return; }
+ if ("topright".equals(frame)) { topright(request, response, messages); return; }
+ }
+
+ private void bottom(HttpServletRequest request, HttpServletResponse response, String[][] messages, Mailbox mbox)
+ throws IOException {
+ PrintWriter pw = new PrintWriter(response.getWriter());
+ pw.println("<html>");
+ pw.println(" <body>");
+ pw.println(" <pre>");
+ if (request.getParameter("msgnum") != null) {
+ int target = Integer.parseInt(request.getParameter("msgnum"));
+ for(Mailbox.Iterator it = mbox.iterator(); it.next();) {
+ if (it.num() == target) {
+ StringBuffer tgt = new StringBuffer();
+ it.cur().getBody().getStream().transcribe(tgt);
+ pw.println(tgt.toString());
+ break;
+ }
+ }
+ }
+ pw.println(" </pre>");
+ pw.println(" </body>");
+ pw.println("</html>");
+ }
+
+ private void topright(HttpServletRequest request, HttpServletResponse response, String[][] messages) throws IOException {
+ PrintWriter pw = new PrintWriter(response.getWriter());
+ String basename = request.getServletPath();
+ pw.println("<html>");
+ pw.println(" <head>");
+ pw.println(" <style>");
+ pw.println(" a:link { color: #000; text-decoration: none; }");
+ pw.println(" a:active { color: #f00; text-decoration: none; }");
+ pw.println(" a:visited { color: #777; text-decoration: none; }");
+ pw.println(" a:hover { color: #000; text-decoration: none; }");
+ pw.println(" /* a:hover { color: #00f; text-decoration: none; border-bottom: 1px dotted; } */");
+ pw.println(" </style>");
+ pw.println(" </head>");
+ pw.println(" <body onKeyPress='doKey(event.keyCode)'>");
+ pw.println(" <script>");
+ pw.println(" var chosen = null;");
+ pw.println(" var all = [];");
+ pw.println(" function doKey(x) {");
+ pw.println(" if (chosen == null) { choose(all[0]); return; }");
+ pw.println(" switch(x) {");
+ pw.println(" case 112: if (chosen.id > 0) choose(all[chosen.id-1]); break;");
+ pw.println(" case 110: if (chosen.id < (all.length-1)) choose(all[1+(1*chosen.id)]); break;");
+ pw.println(" }");
+ pw.println(" }");
+ pw.println(" function choose(who) {");
+ pw.println(" who.style.background = '#ffc';");
+ pw.println(" if (chosen != null) chosen.style.background = '#aaa';");
+ pw.println(" top.bottom.location='"+basename+"?frame=bottom&msgnum='+who.id;");
+ pw.println(" chosen = who;");
+ pw.println(" }");
+ pw.println(" </script>");
+ pw.println(" <table width=100% border=0 cellpadding=0 cellspacing=0>");
+ boolean odd=false;
+ for(int i=0; i<messages.length; i++) {
+ odd = !odd;
+ String[] m = messages[i];
+ pw.println(" <tr style='background: "+(odd?"#e8eef7":"white")+"' id='"+m[3]+"' "+
+ "onmouseover='this.style.color=\"blue\"' "+
+ "onmouseout='this.style.color=\"black\"' "+
+ "onclick='choose(this);'>");
+ pw.println("<td style='padding:5px; padding-bottom:2px'>"+m[0]+"</td>");
+ pw.println("<td style='padding:5px; padding-bottom:2px'>"+m[1]+"</td>");
+ pw.println("<td style='padding:5px; padding-bottom:2px'>"+m[2]+"</td>");
+ pw.println("</tr>");
+ pw.println("<script> all["+i+"] = document.getElementById('"+i+"'); </script>");
+ pw.println("<tr height=1 bgcolor=black><td colspan=3>");
+ pw.println(" <img src=http://www.xwt.org/images/clearpixel.gif></td></tr>");
+ }
+ pw.println(" </table>");
+ pw.println(" </body>");
+ pw.println("</html>");
+ }
+ }
}
projects / org.ibex.mail.git / blobdiff