private GMime.Message GetGMimeMessage(string file, int offset, int size)
{
GMime.Message msg = null;
if (!File.Exists(file))
{
return(null);
}
StreamFs stream = null;
Parser parser = null;
try {
int fd = Syscall.open(file, OpenFlags.O_RDONLY);
stream = new StreamFs(fd, offset, offset + size);
parser = new Parser(stream);
msg = parser.ConstructMessage();
} catch {
} finally {
if (stream != null)
{
stream.Dispose();
}
if (parser != null)
{
parser.Dispose();
}
}
return(msg);
}
private GMime.Message FullMessage()
{
int fd;
string file = Thunderbird.GetFullyIndexableFile(workfile);
GMime.Message message = null;
// gmime will go nuts and make the daemon "segmentation fault" in case the file doesn't exist!
if (!File.Exists(file))
{
return(message);
}
try {
fd = Mono.Unix.Native.Syscall.open(file, Mono.Unix.Native.OpenFlags.O_RDONLY);
StreamFs stream = new StreamFs(fd, Offset, Offset + Size);
Parser parser = new Parser(stream);
message = parser.ConstructMessage();
stream.Dispose();
parser.Dispose();
} catch {}
return(message);
}
public void Dispose()
{
if (this.handler != null && this.handler.Reader != null)
{
this.handler.Reader.Close();
}
this.handler = null;
if (this.message != null)
{
this.message.Dispose();
this.message = null;
}
}
private GMime.Message GetStubMessage(XmlDocument document)
{
GMime.Message message = new GMime.Message(true);
message.Subject = Mime.HeaderDecodeText(GetText(document, "Subject"));
message.Sender = Mime.HeaderDecodePhrase(GetText(document, "Author"));
message.MessageId = GetText(document, "MessageId");
message.Date = DateTimeUtil.UnixToDateTimeUtc(Convert.ToInt64(GetText(document, "Date")));
string str = GetText(document, "Recipients");
GMime.InternetAddressList recipients = GMime.InternetAddressList.Parse(str);
foreach (GMime.InternetAddress ia in recipients)
{
message.To.Add(ia);
}
recipients.Dispose();
return(message);
}
private Indexable ToAddMailMessageIndexable(XmlDocument document)
{
GMime.Message message = null;
// Check if the entire message is available
if (ToBool(GetText(document, "HasOffline")))
{
// We must make sure we don't get an exception here since we can fallback to
// other information
try {
int offset = Convert.ToInt32(GetText(document, "MessageOffset")),
size = Convert.ToInt32(GetText(document, "OfflineSize"));
message = GetGMimeMessage(GetText(document, "FolderFile"), offset, size);
} catch (Exception e) {
Logger.Log.Debug(e, "Failed to parse GMime message");
}
}
if (message == null)
{
message = GetStubMessage(document);
}
Indexable indexable = new Indexable(GenerateUniqueUri(document));
indexable.HitType = "MailMessage";
indexable.MimeType = "message/rfc822";
indexable.Timestamp = DateTimeUtil.UnixToDateTimeUtc(Convert.ToInt64(GetText(document, "Date")));
indexable.CacheContent = true;
indexable.FlushBufferCache = true;
indexable.SetBinaryStream(message.Stream);
indexable.AddProperty(Property.NewKeyword("fixme:client", "thunderbird"));
indexable.AddProperty(Property.NewKeyword("fixme:folder", GetText(document, "Folder")));
indexable.AddProperty(Property.NewUnsearched("ParentUri", GetText(document, "FolderFile")));
indexable.AddProperty(Property.NewUnsearched("fixme:uri", GetText(document, "Uri")));
message.Dispose();
return(indexable);
}
protected override void DoOpen(FileInfo info)
{
if (!gmime_initialized)
{
gmime_initialized = true;
// Only try initialization once; if it fails, it'll never work.
try {
GMime.Global.Init();
} catch (Exception e) {
Log.Error(e, "Unable to initialize GMime");
gmime_broken = true;
Error();
return;
}
}
if (gmime_broken)
{
Error();
return;
}
int mail_fd = Mono.Unix.Native.Syscall.open(info.FullName, Mono.Unix.Native.OpenFlags.O_RDONLY);
if (mail_fd == -1)
{
throw new IOException(String.Format("Unable to read {0} for parsing mail", info.FullName));
}
GMime.StreamFs stream = new GMime.StreamFs(mail_fd);
GMime.Parser parser = new GMime.Parser(stream);
this.message = parser.ConstructMessage();
stream.Dispose();
parser.Dispose();
if (this.message == null)
{
Error();
}
}
private GMime.Message ConstructMessage()
{
GMime.Message message = null;
// Try to fully index this mail by loading the entire mail into memory
if (GetBool("FullIndex"))
{
message = FullMessage();
}
// Make sure we have the correct status set on this message, in case something went wrong
if (message == null || (message != null && message.Stream.Length <= 1))
{
SetObject("FullIndex", (object)false);
return(PartialMessage());
}
else
{
return(message);
}
}
private GMime.Message PartialMessage()
{
string date = GetString("date");
GMime.Message message = new GMime.Message(true);
message.Subject = GetString("subject");
message.Sender = GetString("sender");
message.MessageId = GetString("message-id");
message.SetDate((date != string.Empty ? DateTime.Parse(date) : DateTimeUtil.UnixToDateTimeUtc(0)), 0);
// Add references
if (data.ContainsKey("references"))
{
foreach (Match m in Regex.Matches((data ["references"] as string), @"\<(?>[^\<\>]+)\>"))
{
message.AddHeader("References", m.Value);
}
}
return(message);
}
private Indexable MailToIndexable(TB.Mail mail)
{
Indexable indexable;
GMime.Message message = mail.Message;
FullIndex = mail.GetBool("FullIndex"); // Make sure this is up to date
string mailbox = (MailboxName != null ? MailboxName : (string)mail.GetString("mailbox"));
indexable = NewIndexable(mail.Uri, message.Date.ToUniversalTime(), "MailMessage");
indexable.MimeType = "message/rfc822";
indexable.CacheContent = true;
indexable.AddProperty(Property.NewKeyword("fixme:folder", mailbox));
indexable.SetBinaryStream(message.Stream);
if (mail.GetBool("FullIndex"))
{
indexable.ContentUri = UriFu.PathToFileUri(Thunderbird.GetFullyIndexableFile(DbFile));
}
message.Dispose();
return(indexable);
}
protected override void DoOpen (FileInfo info)
{
if (!gmime_initialized) {
gmime_initialized = true;
// Only try initialization once; if it fails, it'll never work.
try {
GMime.Global.Init ();
} catch (Exception e) {
Log.Error (e, "Unable to initialize GMime");
gmime_broken = true;
Error ();
return;
}
}
if (gmime_broken) {
Error ();
return;
}
int mail_fd = Mono.Unix.Native.Syscall.open (info.FullName, Mono.Unix.Native.OpenFlags.O_RDONLY);
if (mail_fd == -1)
throw new IOException (String.Format ("Unable to read {0} for parsing mail", info.FullName));
GMime.StreamFs stream = new GMime.StreamFs (mail_fd);
GMime.Parser parser = new GMime.Parser (stream);
this.message = parser.ConstructMessage ();
stream.Dispose ();
parser.Dispose ();
if (this.message == null)
Error ();
}
public void Dispose ()
{
if (this.handler != null && this.handler.Reader != null)
this.handler.Reader.Close ();
this.handler = null;
if (this.message != null) {
this.message.Dispose ();
this.message = null;
}
}
private GMime.Message GetStubMessage (XmlDocument document)
{
GMime.Message message = new GMime.Message (true);
message.Subject = Mime.HeaderDecodeText (GetText (document, "Subject"));
message.Sender = Mime.HeaderDecodePhrase (GetText (document, "Author"));
message.MessageId = GetText (document, "MessageId");
message.Date = DateTimeUtil.UnixToDateTimeUtc (Convert.ToInt64 (GetText (document, "Date")));
string str = GetText (document, "Recipients");
GMime.InternetAddressList recipients = GMime.InternetAddressList.Parse (str);
foreach (GMime.InternetAddress ia in recipients)
message.To.Add (ia);
recipients.Dispose ();
return message;
}
public void OnEachPart(GMime.Object mime_part)
{
GMime.Object part = null;
bool part_needs_dispose = false;
//for (int i = 0; i < this.depth; i++)
// Console.Write (" ");
//Console.WriteLine ("Content-Type: {0}", mime_part.ContentType);
++depth;
if (mime_part is GMime.MessagePart)
{
GMime.MessagePart msg_part = (GMime.MessagePart)mime_part;
using (GMime.Message message = msg_part.Message) {
using (GMime.Object subpart = message.MimePart)
this.OnEachPart(subpart);
}
}
else if (mime_part is GMime.Multipart)
{
GMime.Multipart multipart = (GMime.Multipart)mime_part;
int num_parts = multipart.Count;
// If the mimetype is multipart/alternative, we only want to index
// one part -- the richest one we can filter.
if (mime_part.ContentType.MediaSubtype.ToLower() == "alternative")
{
// The richest formats are at the end, so work from there
// backward.
for (int i = num_parts - 1; i >= 0; i--)
{
GMime.Object subpart = multipart[i];
if (IsMimeTypeHandled(subpart.ContentType.ToString()))
{
part = subpart;
part_needs_dispose = true;
break;
}
else
{
subpart.Dispose();
}
}
}
// If it's not alternative, or we don't know how to filter any of
// the parts, treat them like a bunch of attachments.
if (part == null)
{
for (int i = 0; i < num_parts; i++)
{
using (GMime.Object subpart = multipart[i])
this.OnEachPart(subpart);
}
}
}
else if (mime_part is GMime.Part)
{
part = mime_part;
}
else
{
throw new Exception(String.Format("Unknown part type: {0}", part.GetType()));
}
if (part != null)
{
System.IO.Stream stream = null;
using (GMime.DataWrapper content_obj = ((GMime.Part)part).ContentObject)
stream = content_obj.Stream;
// If this is the only part and it's plain text, we
// want to just attach it to our filter instead of
// creating a child indexable for it.
bool no_child_needed = false;
string mime_type = part.ContentType.ToString().ToLower();
if (this.depth == 1 && this.count == 0)
{
if (mime_type == "text/plain")
{
no_child_needed = true;
this.reader = new StreamReader(stream);
}
else if (mime_type == "text/html")
{
no_child_needed = true;
html_part = true;
string enc = part.ContentType.GetParameter("charset");
// DataWrapper.Stream is a very limited stream
// and does not allow Seek or Tell
// HtmlFilter requires Stream.Position=0.
// Play safe and create a memorystream
// for HTML parsing.
GMime.StreamMem mem_stream;
mem_stream = new GMime.StreamMem();
GMime.Stream data_stream;
data_stream = ((StreamWrapper)stream).GMimeStream;
data_stream.WriteToStream(mem_stream);
data_stream.Flush();
// The StreamWrapper and hence the memory_stream
// will be closed when the reader is closed
// after Pull()-ing is done.
System.IO.Stream html_stream;
html_stream = new StreamWrapper(mem_stream);
html_stream.Seek(0, SeekOrigin.Begin);
stream.Close();
try {
this.reader = FilterHtml.GetHtmlReader(html_stream, enc, link_handler);
} catch (Exception e) {
Log.Debug(e, "Exception while filtering HTML email {0}", this.indexable.Uri);
this.reader = null;
html_stream.Close();
html_part = false;
}
}
}
if (!no_child_needed)
{
// Check the mime type against the blacklist and don't index any
// parts that are contained within. That way the user doesn't
// get flooded with pointless signatures and vcard and ical
// attachments along with (real) attachments.
if (Array.IndexOf(blacklisted_mime_types, mime_type) == -1)
{
string sub_uri = "#" + this.count;
Indexable child;
child = new Indexable(UriFu.AddFragment(this.indexable.Uri, sub_uri, true));
child.DisplayUri = new Uri(this.indexable.DisplayUri.ToString() + "#" + this.count);
// This is a special case.
// Even for mails found on disk, MailMessage hitype is set
child.HitType = "MailMessage";
child.MimeType = mime_type;
// If this is the richest part we found for multipart emails, add its content to textcache
if (snippet_attachment ||
(this.depth == 1 && this.count == 0))
{
child.CacheContent = true;
}
else
{
child.CacheContent = false;
}
string filename = ((GMime.Part)part).Filename;
if (!String.IsNullOrEmpty(filename))
{
child.AddProperty(Property.NewKeyword("fixme:attachment_title", filename));
foreach (Property prop in Property.StandardFileProperties(filename, false))
{
child.AddProperty(prop);
}
}
// Store length of attachment
long length = stream.Length;
if (length != -1)
{
child.AddProperty(Property.NewUnsearched("fixme:filesize", length));
}
if (part.ContentType.MediaType.ToLower() == "text")
{
child.SetTextReader(new StreamReader(stream));
}
else
{
child.SetBinaryStream(stream);
}
child.SetChildOf(this.indexable);
child.StoreStream();
child.CloseStreams();
this.child_indexables.Add(child);
}
else
{
Log.Debug("Skipping attachment {0}#{1} with blacklisted mime type {2}",
this.indexable.Uri, this.count, mime_type);
}
}
this.count++;
}
if (part_needs_dispose)
{
part.Dispose();
}
--depth;
}
private GMime.Message PartialMessage ()
{
string date = GetString ("date");
GMime.Message message = new GMime.Message (true);
message.Subject = GetString ("subject");
message.Sender = GetString ("sender");
message.MessageId = GetString ("message-id");
message.SetDate ((date != string.Empty ? DateTime.Parse (date) : DateTimeUtil.UnixToDateTimeUtc (0)), 0);
// Add references
if (data.ContainsKey ("references")) {
foreach (Match m in Regex.Matches ((data ["references"] as string), @"\<(?>[^\<\>]+)\>"))
message.AddHeader ("References", m.Value);
}
return message;
}
