MESSAGE
| DATE | 2007-11-18 |
| FROM | Ruben Safir
|
| SUBJECT | Re: [NYLXS - HANGOUT] Website Updates
|
On Sun, Nov 18, 2007 at 01:08:12PM -0500, Ron Guerin wrote:
> Ron Guerin wrote:
> > Ruben Safir wrote:
> >> From: ruben-at-mrbrklyn Sun Nov 18 01:22:56 2007
> >>
> >> I think that literally written by sendmail when the mail is recieved
> >> and entered on the first line of the mail, which is why the only
> >> thing you can trust in your headers with regard to spam is the
> >> very first line.
> >
> > I've gotta say, that Sendmail's choice of delimiter is almost grossly
> > inappropriate since it makes it much harder than necessary to sort out
> > message delimiters from From: headers. They could have and should have
> > used any string that wasn't the letters "f","r","o","m" and a colon.
>
> You sure there's a colon there?
>
There is no colon
> The best description of an mbox that I was able to turn up in Google,
> suggests the delimiter you're showing above is invalid.
>
> A message encoded in mbox format begins with a From_ line,
> continues with a series of non-From_ lines, and ends with a
> blank line. A From_ line means any line that begins with
> the characters F, r, o, m, space
>
> The final line is a completely blank line (no spaces or
> tabs). Notice that blank lines may also appear elsewhere in
> the message. If the last line of the message was a partial
> line, it writes two newlines; otherwise it writes one.
>
> The From_ line always looks like From envsender date
> moreinfo. envsender is one word, without spaces or tabs; it
> is usually the envelope sender of the message. date is the
> delivery date of the message. It always contains exactly 24
> characters in asctime format. moreinfo is optional; it may
> contain arbitrary information.
>
That should be the regex.
Meanwhile I have a new problem tonight. I have a dead computer
in the livingroom. The soundcard lost all but two channels, so
I cleaned the machine and now its not starting. Any clues on
where to find an ATX mainboard that will accept a Duron 800
CPU.
Ruben
> Between the From_ line and the blank line is a message in
> RFC 822 format.
>
> >From quoting ensures that the resulting lines are not From_
> lines: the program prepends a > to any From_ line,
> >From_ line, >>From_ line, >>>From_ line, etc.
>
>
> HOW A MESSAGE IS READ
> A reader scans through an mbox file looking for From_ lines.
> Any From_ line marks the beginning of a message. The reader
> should not attempt to take advantage of the fact that every
> From_ line (past the beginning of the file) is preceded by a
> blank line.
>
> Once the reader finds a message, it extracts a (possibly
> corrupted) envelope sender and delivery date out of the
> From_ line. It then reads until the next From_ line or end
> of file, whichever comes first. It strips off the final
> blank line and deletes the quoting of >From_ lines and
> >>From_ lines and so on. The result is an RFC 822 message.
>
> - Ron
--
http://www.mrbrklyn.com - Interesting Stuff
http://www.nylxs.com - Leadership Development in Free Software
So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998
http://fairuse.nylxs.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002
"Yeah - I write Free Software...so SUE ME"
"The tremendous problem we face is that we are becoming sharecroppers to our own cultural heritage -- we need the ability to participate in our own society."
"> I'm an engineer. I choose the best tool for the job, politics be damned.<
You must be a stupid engineer then, because politcs and technology have been attached at the hip since the 1st dynasty in Ancient Egypt. I guess you missed that one."
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