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A post in my journal with Perl. [Oct. 17th, 2004|09:24 pm]
LiveJournal Client Discussions


I'm trying to write something simple in Perl, to post a private message in my journal.
Is not working for me, though.

This is what I have done so far:

#!/usr/bin/perl -w
use IO::Socket::INET;
$MySocket=new IO::Socket::INET->new(

$msg="POST /interface/flat HTTP/1.0
Host: www.livejournal.com
Content-type: application/x-www-form-urlencoded

I tried just telnet www.livejournal.com and pasting $msg, and the connection gets' closed.
Am I missing something?
Also, how would you implement this, so that the password is not sent in clear text?.

I read http://www.livejournal.com/doc/server/ljp.csp.flat.postevent.html but says that password is Deprecated?
I'm confused.

Perhaps one of you can give me an example on what to put on that line that starts with "mode"


[User Picture]From: vanbeast
2004-10-18 11:43 am (UTC)
no problem :)

Obviously, this is quick-and-dirty and could use improvement, but it does work!

I must emphasize what others said, too: don't be tempted to do your own HTTP handling when there are good modules that do it for you :)
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[User Picture]From: lordindra
2004-10-18 12:02 pm (UTC)
don't be tempted to do your own HTTP handling when there are good modules that do it for you :)

Thats one thing I love about Perl. 90% of any program I'm likely to write is already written for me, I just have to string a couple modules together and I'm done.

Ok, maybe its not quite that simple, but its pretty close.
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[User Picture]From: djdavejumpers
2004-10-18 12:16 pm (UTC)
how do I make this use md5 password?
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[User Picture]From: bleything
2004-10-18 12:19 pm (UTC)
Change "password" to "hpassword" and hash the thing. Check out the protocol docs for more info.

MD5 passwords are no more secure than plain-text, though... you should use challenge/response :)
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[User Picture]From: djdavejumpers
2004-10-18 02:50 pm (UTC)
so after sending a getchallenge and printing
use strict;
use LWP;
use Digest::MD5 qw(md5_hex);

my $ua = LWP::UserAgent->new;
my $url = "http://www.livejournal.com/interface/flat";

my $content ="mode=getchallenge";

my $resp = $ua->post($url, content=>$content);
if ($resp->is_success) {
print $resp->content;
} else {
print "Bad luck this time\n";

I get the following


I can't seem to find how to parse these reponse, in order to grab the challenge response to do
my $response = md5_hex($result . md5_hex($pass));

How would you grab the response and put it in $result?

I know this is more like a PERL question, but I just though you would know.
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[User Picture]From: djdavejumpers
2004-10-18 02:58 pm (UTC)
oh I figured it out.

my @lo = split(/\n/,$resp->content);

thanks for the tips.
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[User Picture]From: sapphirecat
2004-10-19 06:10 am (UTC)
If you use a hash for it instead of an array, you can access it by name.

my %lo = split(/\n/, $resp->content);
my $response = md5_hex($lo{challenge} . md5_hex($pass));
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