It appears that wiki.darcs.net currently does not allow anonymous
edits:

    $ editmoin http://wiki.darcs.net/index.html/TrentBuck
    You are not allowed to edit this page.
    error: body information not found

Therefore, I have created an account using w3m.  Instead of giving
editmoin my username and password and having *it* perform the login
step, I apparently have to give it a session cookie.

Therefore, I am attempting to log in with curl so as to generate a
session cookie.  Apart from the fact that I don't know how to extract
session cookies from w3m, this is useful because cookies expire daily
(which I approve of), and therefore I will need to re-create this
session cookie each time I use editmoin.

Where my password is stored (without a trailing newline) in
~/.darcs-wiki.secret,

    $ u=http://wiki.darcs.net/index.html/UserPreferences
    $ f=~/.darcs-wiki.secret
    $ curl $u -F name=TrentBuck -F password=@$f
    You are not allowed to access this!

It appears that wiki.darcs.net has blacklisted curl users.  Therefore,
I spoof User-Agent accordingly:

    $ a='W3C standards are important. Stop fucking obsessing over user-agent already.'
    $ curl $u -A "$a" -F name=TrentBuck -F password=@$f

This results in an HTML page that is *not* logged in.  You can render
it thusly:

    $ curl -s $u -A "$a" -F name=TrentBuck -F password=@$f |
    > w3m -dump -T text/html

On Mon, Nov 10, 2008 at 06:00:35PM +0000, trentbuck@gmail.com wrote:
>     $ curl $u -A "$a" -F name=TrentBuck -F password=@$f

This works if I add -F login=Login.

It appears that because moinmoin (naughtily) displays multiple forms
on a single page, it kludgily checks the value of the submit button to
work out WHICH form it is responding to.

A complete script to extract the session ID is thus

    #!/bin/sh -ev
    f=~/.darcs-wiki.secret
    curl -s -o /dev/null -c - \
         http://wiki.darcs.net/index.html \
         -A 'W3C standards are important. Stop fucking obsessing over user-agent already.' \
         -F login=Login -F name=TrentBuck -F password=@$f |
    sed -n \$p | cut -d"$(printf \\t)" -f7

I will now attempt to implement this directly in editmoin, so that it
can just get a password from ~/.netrc like any other utility that
deals with pointless and insecure passwords.

See also: http://bugs.debian.org/505257