X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Forg%2Fibex%2Fmail%2FFileBasedMailbox.java;fp=src%2Forg%2Fibex%2Fmail%2FFileBasedMailbox.java;h=062168998e634986a14556a9055588d33fb18501;hb=73c4f25fcc07bcee4e3dde4539a9776094fe5187;hp=0000000000000000000000000000000000000000;hpb=807197a6bf8a378ea8fd0ce2f3d372ba847434d2;p=org.ibex.mail.git

diff --git a/src/org/ibex/mail/FileBasedMailbox.java b/src/org/ibex/mail/FileBasedMailbox.java
new file mode 100644
index 0000000..0621689
--- /dev/null
+++ b/src/org/ibex/mail/FileBasedMailbox.java
@@ -0,0 +1,375 @@
+// 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;
+import org.prevayler.*;
+import org.ibex.mail.*;
+import org.ibex.util.*;
+import org.ibex.io.*;
+import java.io.*;
+import java.nio.*;
+import java.nio.channels.*;
+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,Mailbox> instances = new WeakHashMap<String,Mailbox>();
+    public String toString() { return "[FileBasedMailbox " + path.getAbsolutePath() + "]"; }
+    public Mailbox slash(String name, boolean create) { return getFileBasedMailbox(path.getAbsolutePath()+slash+name, create); }
+
+    // FIXME: should be a File()
+    public static synchronized Mailbox getFileBasedMailbox(String path, boolean create) {
+        try {
+            Mailbox ret = instances.get(path);
+            if (ret == null) {
+                if (!create && !(new File(path).exists())) return null;
+                if (new File(new File(path)+"/subscribers").exists()) {
+                    ret = new MailingList(new File(path), new FileBasedMailbox(new File(path)));
+                } else {
+                    ret = new FileBasedMailbox(new File(path));
+                }
+                instances.put(path, ret);
+            }
+            return ret;
+        } catch (Exception e) {
+            Log.error(FileBasedMailbox.class, e);
+            return null;
+        }
+    }
+
+    // Instance //////////////////////////////////////////////////////////////////////////////
+
+    private File path;
+    private FileLock lock;
+    private int uidNext;
+    private int uidValidity;
+
+    // Helpers //////////////////////////////////////////////////////////////////////////////
+
+    private static void rmDashRf(File f) throws IOException {
+        if (!f.isDirectory()) { f.delete(); return; }
+        String[] children = f.list();
+        for(int i=0; i<children.length; i++) rmDashRf(new File(f.getAbsolutePath() + slash + children[i]));
+        f.delete();
+    }
+
+    private FileBasedMailbox(File path) throws MailException, IOException, ClassNotFoundException {
+        this.path = path;
+        path.mkdirs();
+
+        // acquire lock
+        File lockfile = new File(this.path.getAbsolutePath() + slash + ".lock");
+        lock = new RandomAccessFile(lockfile, "rw").getChannel().tryLock();
+        /*
+        if (lock == null) {
+            Log.warn(this, "warning: blocking waiting for a lock on " + path);
+            lock = new RandomAccessFile(lockfile, "rw").getChannel().lock();
+            if (lock == null) throw new IOException("unable to lock FileBasedMailbox: " + path);
+        }
+        lockfile.deleteOnExit();
+        */
+
+        uidValidity = (int)(lockfile.lastModified() & 0xffffffff);
+        uidNext = 0;
+        String[] files = path.list();
+        for(int i=0; i<files.length; i++) {
+            try {
+                if (files[i].indexOf('.') <= 0) continue;
+                files[i] = files[i].substring(0, files[i].indexOf('.'));
+                int n = Integer.parseInt(files[i]);
+                if (n>=uidNext) uidNext = n;
+            } catch(Exception e) { Log.error(this, e); }
+        }
+    }
+
+    public String[] sort(String[] s) {
+        Arrays.sort(s);
+        return s;
+    }
+
+    public String[] files() {
+        String[] s = path.list(filter);
+        Arrays.sort(s, comparator);
+        return s;
+    }
+    
+    private static Comparator<String> comparator = new Comparator<String>() {
+        public int compare(String a, String b) {
+            if (a.indexOf('.')==-1) return a.compareTo(b);
+            if (b.indexOf('.')==-1) return a.compareTo(a);
+            int ai = Integer.parseInt(a.substring(0, a.indexOf('.')));
+            int bi = Integer.parseInt(b.substring(0, b.indexOf('.')));
+            return ai<bi ? -1 : ai>bi ? 1 : 0;
+        }
+    };
+
+    public Mailbox.Iterator  iterator()           { return new Iterator(); }
+    public String[] children() {
+        Vec vec = new Vec();
+        String[] list = sort(path.list());
+        for(int i=0; i<list.length; i++) {
+            File f = new File(path.getAbsolutePath() + slash + list[i]);
+            if (f.isDirectory() && f.getName().charAt(0) != '.') vec.addElement(list[i]);
+        }
+        return (String[])vec.copyInto(new String[vec.size()]);
+    }
+
+    public int uidValidity() { return uidValidity; }
+    public int uidNext() {  return uidNext; }
+    public synchronized void insert(Message message, int flags) {
+        try {
+            String name, fullname; File target, f;
+            for(int i = uidNext; ; i++) {
+                name = i + ".";
+                fullname = path.getAbsolutePath() + slash + name;
+                target = new File(fullname);
+                f = new File(target.getCanonicalPath() + "-");
+                if (!f.exists() && !target.exists()) break;
+                Log.error(this, "aieeee!!!! target of insert() already exists: " + target.getAbsolutePath());
+            }
+            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);
+        } catch (IOException e) { throw new MailException.IOException(e); }
+        Log.info(this, path + " <= " + message.summary());
+    }
+
+    private static FilenameFilter filter =
+        new FilenameFilter() { public boolean accept(File dir, String name) {
+            return name.endsWith(".");
+        } };
+
+    private class Iterator extends Mailbox.Default.Iterator {
+        int cur = -1;
+        String[] files = files();
+        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 false; }
+        public boolean recent() { return false; }
+        public int nntpNumber() { return cur+1; }  // FIXME: lame
+        public int imapNumber() { return cur+1; }  // EUDORA insists that message numbers start at 1, not 0
+        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.Original(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.getRequestURI();
+            PrintWriter pw = new PrintWriter(response.getWriter());
+            pw.println("<html>");
+            if (top) {
+                pw.println("  <frameset rows='30%,*'>");
+                //pw.println("    <frame src='"+basename+"?frame=banner' marginwidth=0 marginheight=0 name=banner/>");
+                //pw.println("    <frame src='"+basename+"?frame=top' marginwidth=0 marginheight=0 name=top/>");
+                pw.println("    <frame src='"+basename+"?frame=topright' marginwidth=0 marginheight=0 name=topright/>");
+                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.getRequestURI();
+
+            if (frame == null) { frames(request, response, true); return; }
+            if (frame.equals("top")) { frames(request, response, false); return; }
+            if (frame.equals("banner")) { banner(request, response); 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(" ","&nbsp;");
+                s[3] = it.imapNumber() + "";
+                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("  <head>");
+            pw.println("  <style>");
+            pw.println("      body { margin: 10px; }");
+            pw.println("      pre {");
+            pw.println("         font-family: monospace;");
+            pw.println("         background-color:  #F0F0E0;");
+            pw.println("         color: rgb(0, 0, 0);");
+            pw.println("         padding: 5px;");
+            pw.println("         margin: 0px;");
+            pw.println("         overflow: auto;");
+            //pw.println("         width: 80%;");
+            //pw.println("         border-style: solid;");
+            //pw.println("         border-width: 1px;");
+            pw.println("      }");
+            pw.println("  </style>");
+            pw.println("  </head>");
+            pw.println("  <body>");
+            if (request.getParameter("msgnum") != null) {
+                int target = Integer.parseInt(request.getParameter("msgnum"));
+                Mailbox.Iterator it = mbox.iterator();
+                while(it.next())
+                    if (it.imapNumber() == target)
+                        break;
+                if (it.cur() != null) {
+                    pw.println("    <table width=100% border=0 cellspacing=0 style='border: 1px black solid; background-color:#F0F0E0;'>");
+                    pw.println("      <tr style='border: 1px black solid; font-family: monospace'><td style='padding: 5px'>");
+                    Headers h = it.cur().headers;
+                    pw.println(" Subject: " + it.cur().subject +"<br>");
+                    pw.println("    From: " + it.cur().from +"<br>");
+                    pw.println("    Date: " + it.cur().date +"<br>");
+                        /*
+                    for(java.util.Enumeration e = h.names(); e.hasMoreElements();) {
+                        String key = (String)e.nextElement();
+                        if (key==null || key.length()==0 || key.equals("from") ||
+                            key.equals("to") || key.equals("subject") || key.equals("date")) continue;
+                        key = Character.toUpperCase(key.charAt(0)) + key.substring(1);
+                        String val = h.get(key);
+                        for(int i=key.length(); i<15; i++)pw.print(" ");
+                        pw.print(key+": ");
+                        pw.println(val);
+                    }
+                        */
+                    pw.print("</td></tr><tr><td style='border-top: 1px black; border-top-style: dotted;'><pre>");
+                    StringBuffer tgt = new StringBuffer();
+                    it.cur().getBody().getStream().transcribe(tgt);
+                    pw.println(tgt.toString());
+                    pw.println("    </pre></td></tr></table>");
+                }
+            }
+            pw.println("  </body>");
+            pw.println("</html>");
+            pw.flush();
+            pw.close();
+        }
+        
+        private void banner(HttpServletRequest request, HttpServletResponse response) throws IOException {
+            String basename = request.getServletPath();
+            String realpath = getServletContext().getRealPath(basename);
+            /*
+            MailingList list = MailingList.getMailingList(realpath);
+            list.banner(request, response);
+            */
+            banner(request, response);
+        }
+
+        private void topright(HttpServletRequest request, HttpServletResponse response, String[][] messages) throws IOException {
+            PrintWriter pw = new PrintWriter(response.getWriter());
+            String basename = request.getRequestURI();
+            pw.println("<html>");
+            pw.println("  <head>");
+            pw.println("    <style>");
+            pw.println("      TH, TD, P, LI {");
+            pw.println("          font-family: helvetica, verdana, arial, sans-serif;");
+            pw.println("          font-size: 12px;  ");
+            pw.println("          text-decoration:none; ");
+            pw.println("      }");
+            pw.println("      body { margin: 10px; }");
+            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 = '#ccc';");
+            pw.println("          parent.parent.bottom.location='"+basename+"?frame=bottom&msgnum='+who.id;");
+            pw.println("          chosen = who;");
+            pw.println("      }");
+            pw.println("    </script>");
+            pw.println("    <div style='border: 1px black solid;'><table width=100% border=0 cellpadding=0 cellspacing=0>");
+            pw.println("    <tr><td style='padding: 4px' bgcolor=#eff7ff>");
+            pw.flush();
+            banner(request, response);
+            pw.println("    </td></tr>");
+            pw.println("    <tr><td>");
+            pw.println("    <table width=100% cellpadding=0 cellspacing=0 style='border-top: 1px black solid; cursor:pointer;'>");
+            boolean odd=true;
+            for(int i=0; i<messages.length; i++) {
+                odd = !odd;
+                String[] m = messages[i];
+                pw.println("      <tr style='cursor:pointer; background: "+(odd?"#e8eef7":"white")+"' id='"+m[3]+"' "+
+                           "onmouseover='this.style.color=\"blue\"' "+
+                           "onmouseout='this.style.color=\"black\"' "+
+                           "onclick='choose(this);'>");
+                pw.println("<td style='cursor:pointer; padding:5px; padding-bottom:2px'>"+m[0]+"</td>");
+                pw.println("<td style='cursor:pointer; padding:5px; padding-bottom:2px'>"+m[1]+"</td>");
+                pw.println("<td style='cursor:pointer; padding:5px; padding-bottom:2px'>"+m[2]+"</td>");
+                pw.println("</tr>");
+                pw.println("<script> all["+i+"] = document.getElementById('"+i+"'); </script>");
+            }
+            pw.println("    </table>");
+            pw.println("    </td></tr>");
+            pw.println("    </table></div>");
+            pw.println("  </body>");
+            pw.println("</html>");
+            pw.flush();
+            pw.close();
+        }
+    }
+}