582 lines
18 KiB
Perl
582 lines
18 KiB
Perl
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#!/usr/bin/perl
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#
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# DW::External::XPostProtocol::LJXMLRPC
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#
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# LJ XML-RPC client for crossposting.
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#
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# Authors:
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# Allen Petersen <allen@suberic.net>
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#
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# Copyright (c) 2009 by Dreamwidth Studios, LLC.
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#
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# This program is free software; you may redistribute it and/or modify it under
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# the same terms as Perl itself. For a copy of the license, please reference
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# 'perldoc perlartistic' or 'perldoc perlgpl'.
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package DW::External::XPostProtocol::LJXMLRPC;
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use base 'DW::External::XPostProtocol';
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use strict;
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use warnings;
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use Digest::MD5 qw(md5_hex);
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use XMLRPC::Lite;
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# create a new instance of LJXMLRPC
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sub instance {
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my ($class) = @_;
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my $acct = $class->_skeleton();
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return $acct;
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}
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*new = \&instance;
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sub _skeleton {
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my ($class) = @_;
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# starts out as a skeleton and gets loaded in over time, as needed:
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return bless { protocolid => "LJ-XMLRPC", };
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}
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# internal xml-rpc call method.
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# FIXME we should probably combine this with the similar method in
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# DW::Worker::ContentImporter::LiveJournal, and move it to a general
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# LJ-XMLRPC library class.
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sub _call_xmlrpc {
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my ( $self, $xmlrpc, $mode, $req ) = @_;
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my $result = eval { $xmlrpc->call( "LJ.XMLRPC.$mode", $req ) };
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if ($result) {
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if ( $result->fault ) {
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# error from server
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return {
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success => 0,
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error => $result->faultstring,
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code => $result->faultcode eq '302' ? 'entry_deleted' : ''
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};
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}
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else {
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# success
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return {
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success => 1,
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result => $result->result
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};
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}
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}
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else {
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# connection error
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return {
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success => 0,
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error => LJ::Lang::ml( "xpost.error.connection", { url => $xmlrpc->proxy->endpoint } )
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};
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}
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}
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# does the authentication call.
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# FIXME we should probably combine this with the similar method in
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# DW::Worker::ContentImporter::LiveJournal, and move it to a general
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# LJ-XMLRPC library class.
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sub do_auth {
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my ( $self, $xmlrpc, $auth ) = @_;
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# if we've already set up an ljsession, just use it.
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if ( $auth->{ljsession} ) {
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return $auth;
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}
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# challenge/response for user validation
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if ( $auth->{auth_challenge} && $auth->{auth_response} ) {
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# if we already have a challenge and response, then do a login.
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my $challengecall = $self->_call_xmlrpc(
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$xmlrpc,
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"sessiongenerate",
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{
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ver => 1,
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auth_method => 'challenge',
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username => $auth->{username},
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auth_challenge => $auth->{auth_challenge},
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auth_response => $auth->{auth_response},
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expiration => 'short'
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}
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);
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if ( $challengecall->{success} ) {
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$auth->{success} = 1;
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$auth->{ljsession} = $challengecall->{result}->{ljsession};
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return $auth;
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}
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else {
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# just return the result hashref (with error)
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return $challengecall;
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}
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}
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else {
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my $challengecall = $self->_call_xmlrpc( $xmlrpc, 'getchallenge', {} );
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if ( $challengecall->{success} ) {
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my $challenge = $challengecall->{result}->{challenge};
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return {
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username => $auth->{username},
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auth_challenge => $challenge,
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auth_response => md5_hex( $challenge . $auth->{encrypted_password} ),
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success => 1
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};
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}
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else {
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# just return the result hashref (with error)
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return $challengecall;
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}
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}
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}
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# public xml-rpc call method.
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# FIXME we should probably combine this with the similar method in
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# DW::Worker::ContentImporter::LiveJournal, and move it to a general
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# LJ-XMLRPC library class.
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sub call_xmlrpc {
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my ( $self, $proxyurl, $mode, $req, $auth ) = @_;
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my $xmlrpc = eval {
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XMLRPC::Lite->proxy(
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$proxyurl,
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agent => "$LJ::SITENAME XPoster ($LJ::ADMIN_EMAIL)",
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timeout => 90,
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);
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};
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# connection error if no proxy
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return {
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success => 0,
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error => LJ::Lang::ml( "xpost.error.connection", { url => $proxyurl } )
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}
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unless $xmlrpc;
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# get the auth information
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my $authresp = $self->do_auth( $xmlrpc, $auth );
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# fail if no auth available
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return $authresp unless $authresp->{success};
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# return the results of the call
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if ( $authresp->{ljsession} ) {
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# do an ljsession login
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$xmlrpc->transport->http_request->push_header( 'X-LJ-Auth', 'cookie' );
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$xmlrpc->transport->http_request->push_header(
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Cookie => "ljsession=" . $authresp->{ljsession} );
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return $self->_call_xmlrpc(
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$xmlrpc, $mode,
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{
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ver => 1,
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auth_method => 'cookie',
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username => $authresp->{username},
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%{ $req || {} }
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}
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);
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}
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else {
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# do a standalone challenge/response login.
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return $self->_call_xmlrpc(
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$xmlrpc, $mode,
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{
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ver => 1,
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auth_method => 'challenge',
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username => $authresp->{username},
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auth_challenge => $authresp->{auth_challenge},
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auth_response => $authresp->{auth_response},
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%{ $req || {} }
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}
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);
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}
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}
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# does a crosspost using the LJ XML-RPC protocol. returns a hashref
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# with success => 1 and url => the new url on success, or success => 0
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# and error => the error message on failure.
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sub crosspost {
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my ( $self, $extacct, $auth, $entry, $itemid, $delete ) = @_;
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# get the xml-rpc proxy and start the connection.
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# use the custom serviceurl if available, or the default using the hostname
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my $proxyurl = $extacct->serviceurl || "https://" . $extacct->serverhost . "/interface/xmlrpc";
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# load up the req. if it's a delete, just set event as blank
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my $req;
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if ($delete) {
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$req = { event => '' };
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}
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else {
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# if it's a post or edit, fully populate the request.
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$req = $self->entry_to_req( $entry, $extacct, $auth );
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# FIXME: temporary hack to limit crossposts to one level, avoiding an infinite loop
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$req->{xpost} = 0;
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# are we disabling comments on the remote entry?
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my $disabling_comments = $extacct->owner->prop('opt_xpost_disable_comments') ? 1 : 0;
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# append the footer, if any
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my $footer_text = $self->create_footer( $entry, $extacct, $req->{props}->{opt_nocomments},
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$disabling_comments );
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# set the value for comments on the crossposted entry
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$req->{props}->{opt_nocomments} =
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$disabling_comments || $req->{props}->{opt_nocomments} || 0;
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$req->{event} = $req->{event} . $footer_text if $footer_text;
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}
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# get the correct itemid for edit
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$req->{itemid} = $itemid if $itemid;
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# crosspost, update, or delete
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my $xpost_result =
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$self->call_xmlrpc( $proxyurl, $itemid ? 'editevent' : 'postevent', $req, $auth );
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if ( $xpost_result->{success} ) {
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my $reference = { itemid => $xpost_result->{result}->{itemid} };
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if ( $extacct->recordlink ) {
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$reference->{url} = $xpost_result->{result}->{url};
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}
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return {
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success => 1,
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url => $xpost_result->{result}->{url},
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reference => $reference,
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};
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}
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else {
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return $xpost_result;
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}
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}
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# returns a hash of friends groups.
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sub get_friendgroups {
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my ( $self, $extacct, $auth ) = @_;
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# use the custom serviceurl if available, or the default using the hostname
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my $proxyurl = $extacct->serviceurl || "https://" . $extacct->serverhost . "/interface/xmlrpc";
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my $xpost_result = $self->call_xmlrpc( $proxyurl, 'getfriendgroups', {}, $auth );
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if ( $xpost_result->{success} ) {
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return {
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success => 1,
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friendgroups => $xpost_result->{result}->{friendgroups},
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};
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}
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else {
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return $xpost_result;
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}
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}
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# validates that the given server is running a LJ XML-RPC server.
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# must be run in an eval block. returns 1 on success, dies with an error
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# message on failure.
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sub validate_server {
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my ( $self, $proxyurl, $depth ) = @_;
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$depth ||= 1;
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# get the xml-rpc proxy and start the connection.
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my $xmlrpc = eval { XMLRPC::Lite->proxy( $proxyurl, timeout => 3 ); };
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# fail if no proxy
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return 0 unless $xmlrpc;
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# assume if we respond to LJ.XMLRPC.getchallenge, then we're good
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# on the server.
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# note: this will die on a failed connection with an error.
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my $challengecall = eval { $xmlrpc->call("LJ.XMLRPC.getchallenge"); };
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if ( $challengecall && $challengecall->fault ) {
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# error from the server
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#die($challengecall->faultstring);
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return 0;
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}
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# error; URL probably wrong. Guess and try again
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if ($@) {
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return 0 if $depth > 2;
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eval "use URI;";
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return 0 if $@;
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my $uri = URI->new($proxyurl);
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my $path = $uri->path;
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# don't try to guess further if user actually gave us a path
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return 0 if $path && $path ne "/";
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# user didn't provide us a path, so let's guess
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$uri->path("/interface/xmlrpc");
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return $self->validate_server( $uri->as_string, $depth + 1 );
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}
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# otherwise success. (proxyurl has possibly been updated)
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return ( 1, $proxyurl );
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}
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# translates at Entry object into a request for crossposting
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sub entry_to_req {
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my ( $self, $entry, $extacct, $auth ) = @_;
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# basic parts of the request
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my $req = {
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'subject' => $entry->subject_text,
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'event' => $self->clean_entry_text( $entry, $extacct ),
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'security' => $entry->security,
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};
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# usemask is either full access list, or custom groups.
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if ( $req->{security} eq 'usemask' ) {
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# if allowmask is 1, then it means full access list
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if ( $entry->allowmask == 1 ) {
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$req->{allowmask} = "1";
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}
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else {
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my $allowmask = $self->translate_allowmask( $extacct, $auth, $entry );
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if ($allowmask) {
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$req->{allowmask} = $allowmask;
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}
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else {
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$req->{security} = "private";
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}
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}
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}
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# check minsecurity if set
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if ( my $minsecurity = $extacct->options->{minsecurity} ) {
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if ( $minsecurity eq "private" ) {
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$req->{security} = "private";
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}
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elsif ( ( $minsecurity eq "friends" ) && ( $req->{security} eq "public" ) ) {
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$req->{security} = 'usemask';
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$req->{allowmask} = 1;
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}
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}
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# set the date.
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||
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my $eventtime = $entry->eventtime_mysql;
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$eventtime =~ /^(\d\d\d\d)-(\d\d)-(\d\d) (\d\d):(\d\d)/;
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$req->{year} = $1;
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$req->{mon} = $2 + 0;
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$req->{day} = $3 + 0;
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$req->{hour} = $4 + 0;
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$req->{min} = $5 + 0;
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# properties
|
||
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my $entryprops = $entry->props;
|
||
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$req->{props} = {};
|
||
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|
||
|
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# only bring over these properties
|
||
|
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for my $entrykey (
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||
|
|
qw ( adult_content current_coords current_location current_music opt_backdated opt_nocomments opt_noemail opt_screening used_rte pingback )
|
||
|
|
)
|
||
|
|
{
|
||
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$req->{props}->{$entrykey} = $entryprops->{$entrykey} if defined $entryprops->{$entrykey};
|
||
|
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}
|
||
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|
||
|
|
# always set opt_preformatted -- we pre-process all DW-style autoformatting,
|
||
|
|
# markdown, etc. before crossposting.
|
||
|
|
$req->{props}->{opt_preformatted} = 1;
|
||
|
|
|
||
|
|
# remove html from current location
|
||
|
|
if ( $req->{props}->{current_location} ) {
|
||
|
|
$req->{props}->{current_location} = LJ::strip_html( $req->{props}->{current_location} );
|
||
|
|
}
|
||
|
|
|
||
|
|
# the taglist entryprop stored in the DB is not canonical, and may be truncated if there are too many tags
|
||
|
|
# so let's grab the actual tag items and rebuild a string
|
||
|
|
my @tags = $entry->tags;
|
||
|
|
$req->{props}->{taglist} = join( ', ', @tags );
|
||
|
|
|
||
|
|
# and regenerate this one from data
|
||
|
|
$req->{props}->{picture_keyword} = $entry->userpic_kw;
|
||
|
|
|
||
|
|
# figure out what current_moodid and current_mood to pass to the crossposted entry
|
||
|
|
my ( $siteid, $moodid, $mood ) =
|
||
|
|
( $extacct->siteid, $entryprops->{current_moodid}, $entryprops->{current_mood} );
|
||
|
|
my $external_moodid;
|
||
|
|
if ( $moodid && $mood ) {
|
||
|
|
|
||
|
|
# use the mood text that was given
|
||
|
|
$req->{props}->{current_mood} = $mood;
|
||
|
|
|
||
|
|
# try these in order:
|
||
|
|
# 1. use the mood icon that matches the given mood id
|
||
|
|
# 2. use the mood icon that matches the given mood text
|
||
|
|
# 3. don't use an icon
|
||
|
|
$external_moodid = DW::Mood->get_external_moodid( siteid => $siteid, moodid => $moodid );
|
||
|
|
unless ($external_moodid) {
|
||
|
|
$external_moodid = DW::Mood->get_external_moodid( siteid => $siteid, mood => $mood );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
elsif ($moodid) {
|
||
|
|
|
||
|
|
# try these in order:
|
||
|
|
# 1. use the mood icon that matches the given mood id
|
||
|
|
# 2. use the mood text that matches the given mood id (no icon)
|
||
|
|
$external_moodid = DW::Mood->get_external_moodid( siteid => $siteid, moodid => $moodid );
|
||
|
|
unless ($external_moodid) {
|
||
|
|
$req->{props}->{current_mood} = DW::Mood->mood_name($moodid);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
elsif ($mood) {
|
||
|
|
|
||
|
|
# try these in order:
|
||
|
|
# 1. use the mood icon that matches the given mood text
|
||
|
|
# 2. use the mood text that was given (no icon)
|
||
|
|
$external_moodid = DW::Mood->get_external_moodid( siteid => $siteid, mood => $mood );
|
||
|
|
unless ($external_moodid) {
|
||
|
|
$req->{props}->{current_mood} = $mood;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$req->{props}->{current_moodid} = $external_moodid if $external_moodid;
|
||
|
|
|
||
|
|
# and set the useragent - FIXME put this somewhere else?
|
||
|
|
$req->{props}->{useragent} = "Dreamwidth Crossposter";
|
||
|
|
|
||
|
|
# do any per-site preprocessing
|
||
|
|
$req = $extacct->externalsite->pre_crosspost_hook($req)
|
||
|
|
if $extacct->externalsite;
|
||
|
|
|
||
|
|
return $req;
|
||
|
|
}
|
||
|
|
|
||
|
|
# translates the given allowmask to
|
||
|
|
sub translate_allowmask {
|
||
|
|
my ( $self, $extacct, $auth, $entry ) = @_;
|
||
|
|
|
||
|
|
my $result = $self->get_friendgroups( $extacct, $auth );
|
||
|
|
return 0 unless $result->{success};
|
||
|
|
|
||
|
|
# make a name/id map for the extgroups.
|
||
|
|
my %namemap;
|
||
|
|
foreach my $extgroup ( @{ $result->{friendgroups} || [] } ) {
|
||
|
|
$namemap{ $extgroup->{name} } = $extgroup->{id};
|
||
|
|
}
|
||
|
|
|
||
|
|
# get the trusted group id list from the given allowmask
|
||
|
|
my %selected_group_ids = ( map { $_ => 1 } grep { $entry->allowmask & ( 1 << $_ ) } 1 .. 60 );
|
||
|
|
return 0 unless keys %selected_group_ids;
|
||
|
|
|
||
|
|
# get all of the available groups for the poster
|
||
|
|
my $groups = $entry->poster->trust_groups || {};
|
||
|
|
return 0 unless keys %$groups;
|
||
|
|
|
||
|
|
# now try to map them
|
||
|
|
my $extmask = 0;
|
||
|
|
foreach my $groupid ( keys %$groups ) {
|
||
|
|
|
||
|
|
# skip the groups not selected for this entry
|
||
|
|
next unless $selected_group_ids{$groupid};
|
||
|
|
|
||
|
|
# if there is a matching group name on the external
|
||
|
|
# account, then add its group id to the mask.
|
||
|
|
if ( my $id = $namemap{ $groups->{$groupid}->{groupname} } ) {
|
||
|
|
$extmask |= ( 1 << $id );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $extmask;
|
||
|
|
}
|
||
|
|
|
||
|
|
# cleans the entry text for crossposting
|
||
|
|
# overrides default implementation for use with LJ-based sites
|
||
|
|
sub clean_entry_text {
|
||
|
|
my ( $self, $entry, $extacct ) = @_;
|
||
|
|
|
||
|
|
my $event_text = $entry->event_raw;
|
||
|
|
|
||
|
|
# pre-process all of our own formatting, but preserve <lj user=...> and
|
||
|
|
# <lj-cut> tags, since we're posting to a site that understands them.
|
||
|
|
my $clean_opts = {
|
||
|
|
editor => $entry->prop('editor'),
|
||
|
|
preformatted => $entry->prop('opt_preformatted'),
|
||
|
|
preserve_lj_tags_for => $extacct->externalsite,
|
||
|
|
to_external_site => 1,
|
||
|
|
};
|
||
|
|
LJ::CleanHTML::clean_event( \$event_text, $clean_opts );
|
||
|
|
|
||
|
|
# clean up any embedded objects
|
||
|
|
LJ::EmbedModule->expand_entry( $entry->journal, \$event_text, expand_full => 1 );
|
||
|
|
|
||
|
|
# remove polls, then return the text
|
||
|
|
return $self->scrub_polls($event_text);
|
||
|
|
}
|
||
|
|
|
||
|
|
sub protocolid {
|
||
|
|
my $self = shift;
|
||
|
|
return $self->{protocolid};
|
||
|
|
}
|
||
|
|
|
||
|
|
# hash the password in a protocol-specific manner
|
||
|
|
sub encrypt_password {
|
||
|
|
my ( $self, $password ) = @_;
|
||
|
|
|
||
|
|
if ($password) {
|
||
|
|
return md5_hex($password);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
# don't hash blank passwords
|
||
|
|
return $password;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# get a challenge for this server. returns 0 on failure.
|
||
|
|
sub challenge {
|
||
|
|
my ( $self, $extacct ) = @_;
|
||
|
|
|
||
|
|
# get the xml-rpc proxy and start the connection.
|
||
|
|
# use the custom serviceurl if available, or the default using the hostname
|
||
|
|
my $proxyurl = $extacct->serviceurl || "https://" . $extacct->serverhost . "/interface/xmlrpc";
|
||
|
|
my $xmlrpc = eval { XMLRPC::Lite->proxy( $proxyurl, timeout => 3 ); };
|
||
|
|
return 0 unless $xmlrpc;
|
||
|
|
|
||
|
|
my $challengecall = eval { $xmlrpc->call("LJ.XMLRPC.getchallenge"); };
|
||
|
|
return 0 unless $challengecall;
|
||
|
|
|
||
|
|
if ( $challengecall->fault ) {
|
||
|
|
|
||
|
|
# error from the server
|
||
|
|
#die($challengecall->faultstring);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
# otherwise return the challenge
|
||
|
|
return $challengecall->result->{challenge};
|
||
|
|
}
|
||
|
|
|
||
|
|
# checks to see if this account supports challenge/response authentication
|
||
|
|
sub supports_challenge {
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
# returns the options for this protocol
|
||
|
|
sub protocol_options {
|
||
|
|
my ( $self, $extacct, $POST ) = @_;
|
||
|
|
my $option = {
|
||
|
|
type => 'select',
|
||
|
|
description => BML::ml('.protocol.ljxmlrpc.minsecurity.desc'),
|
||
|
|
opts => {
|
||
|
|
id => 'minsecurity',
|
||
|
|
name => 'minsecurity',
|
||
|
|
selected => $POST ? $POST->{minsecurity}
|
||
|
|
: ( $extacct && $extacct->options && $extacct->options->{minsecurity} )
|
||
|
|
? $extacct->options->{minsecurity}
|
||
|
|
: 'public',
|
||
|
|
},
|
||
|
|
options => [
|
||
|
|
'public', BML::ml('.protocol.ljxmlrpc.minsecurity.public'),
|
||
|
|
'friends', BML::ml('.protocol.ljxmlrpc.minsecurity.friends'),
|
||
|
|
'private', BML::ml('.protocol.ljxmlrpc.minsecurity.private'),
|
||
|
|
],
|
||
|
|
};
|
||
|
|
my @return_value = ($option);
|
||
|
|
return @return_value;
|
||
|
|
}
|
||
|
|
|
||
|
|
1;
|