568 lines
22 KiB
Perl
Executable File
568 lines
22 KiB
Perl
Executable File
#!/usr/bin/perl
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use strict;
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package LJ::Feed;
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eval "use LJR::Distributed;";
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my $ljr = $@ ? 0 : 1;
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if ($ljr) {
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use LJR::Distributed;
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require "$ENV{'LJHOME'}/cgi-bin/ljpoll.pl";
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}
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my %feedtypes = (
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rss => \&create_view_rss,
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atom => \&create_view_atom,
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foaf => \&create_view_foaf,
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);
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sub make_feed
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{
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my ($r, $u, $remote, $opts) = @_;
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$opts->{pathextra} =~ s!^/(\w+)!!;
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my $feedtype = $1;
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my $viewfunc = $feedtypes{$feedtype};
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unless ($viewfunc) {
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$opts->{'handler_return'} = 404;
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return undef;
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}
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$r->notes('codepath' => "feed.$feedtype") if $r;
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if ($u->{'journaltype'} eq "R" && $u->{'renamedto'} ne "") {
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$opts->{'redir'} = LJ::journal_base($u->{'renamedto'}, $opts->{'vhost'}) . "/data/$feedtype";
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return undef;
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}
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my $userid = $u->{'userid'};
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# try cached copy
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# (ljprotocol.pl: memcache "rss:$userid" deleted if "rsslastmod:$userid" changed)
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my $lastmod = LJ::MemCache::get([$userid, "rsslastmod:$userid"]); # more strict than timeupdate: care of edit!
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my $ims = $r->header_in('If-Modified-Since');
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my $theirtime = LJ::http_to_time($ims) if $ims;
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# If-Modified-Since, try #1
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if (defined $lastmod && $ims && $feedtype ne 'foaf' && $theirtime >= $lastmod) {
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#$opts->{'handler_return'} = 304; #Not Modified
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$opts->{'notmodified'} = 1;
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return undef;
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}
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# text already in memcache -
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if ($feedtype eq 'rss' && !$remote) {
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my $data = LJ::MemCache::get([$userid, "rss:$userid"]); #{lastmod => $lastmod, text => $ret}
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if ($data) {
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if (!defined $lastmod) {
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LJ::MemCache::set([$userid, "rsslastmod:$userid"], $data->{lastmod});
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}
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$opts->{'cachecontrol'} = 'max-age=600, private, proxy-revalidate';
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$opts->{'contenttype'} = 'text/xml; charset='.$opts->{'saycharset'};
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#$r->header_out("Last-Modified", LJ::time_to_http($data->{lastmod}));
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$r->set_last_modified($data->{lastmod});
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return $data->{text};
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}
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}
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LJ::load_user_props($u, qw/ journaltitle journalsubtitle opt_synlevel /);
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LJ::text_out(\$u->{$_})
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foreach ("name", "url", "urlname");
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# opt_synlevel will default to 'full'
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$u->{'opt_synlevel'} = 'full'
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unless $u->{'opt_synlevel'} =~ /^(?:full|summary|title)$/;
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# some data used throughout the channel
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my $journalinfo = {
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u => $u,
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link => LJ::journal_base($u) . "/",
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title => $u->{journaltitle} || $u->{name} || $u->{user},
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subtitle => $u->{journalsubtitle} || $u->{name},
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builddate => LJ::time_to_http(time()),
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};
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# if we do not want items for this view, just call out
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$opts->{noitems} = 1 if $feedtype eq 'foaf';
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return $viewfunc->($journalinfo, $u, $opts)
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if ($opts->{'noitems'});
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# for syndicated accounts, redirect to the syndication URL
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# However, we only want to do this if the data we're returning
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# is similar. (Not FOAF, for example)
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if ($u->{'journaltype'} eq 'Y') {
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my $dbr = LJ::get_db_reader();
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my $synurl = $dbr->selectrow_array("SELECT synurl FROM syndicated WHERE userid=$userid");
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unless ($synurl) {
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return 'No syndication URL available.';
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}
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$opts->{'redir'} = $synurl;
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return undef;
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}
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## load the items
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my @items = LJ::get_recent_items({
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'u' => $u,
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'clustersource' => 'slave',
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'remote' => $remote,
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'itemshow' => 25,
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'order' => "logtime",
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'friendsview' => 1, # this returns rlogtimes
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'dateformat' => "S2", # S2 format time format is easier
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});
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if (!defined $lastmod) {
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$lastmod = @items ? $LJ::EndOfTime - $items[0]->{'rlogtime'} : 0;
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LJ::MemCache::set([$userid, "rsslastmod:$userid"], $lastmod);
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# If-Modified-Since, try #2
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if ($ims && $theirtime >= $lastmod) {
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#$opts->{'handler_return'} = 304; #Not Modified
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$opts->{'notmodified'} = 1;
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return undef;
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}
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}
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# set last-modified header:
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#$r->header_out("Last-Modified", LJ::time_to_http($lastmod));
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$r->set_last_modified($lastmod); # including $lastmod = 0
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$journalinfo->{'modtime'} = $lastmod;
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#$opts->{'cachecontrol'} = 'max-age=600, proxy-revalidate'; # unless $remote; #hmm
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$opts->{'cachecontrol'} = 'max-age=600, private, proxy-revalidate'; # if $remote;
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$opts->{'contenttype'} = 'text/xml; charset='.$opts->{'saycharset'};
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# email address of journal owner, but respect their privacy settings
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if ($u->{'allow_contactshow'} eq "Y" && $u->{'opt_whatemailshow'} ne "N" && $u->{'opt_mangleemail'} ne "Y") {
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my $cemail;
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# default to their actual email
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$cemail = $u->{'email'};
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# use their livejournal email if they have one
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if ($LJ::USER_EMAIL && $u->{'opt_whatemailshow'} eq "L" &&
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LJ::get_cap($u, "useremail") && ! $u->{'no_mail_alias'}) {
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$cemail = "$u->{'user'}\@$LJ::USER_DOMAIN";
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}
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# clean it up since we know we have one now
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$journalinfo->{email} = $cemail;
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} else { $journalinfo->{email} = "$u->{'user'} at lj.rossia.org"; }
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my %posteru = (); # map posterids to u objects
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LJ::load_userids_multiple([map { $_->{'posterid'}, \$posteru{$_->{'posterid'}} } @items], [$u]);
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my @cleanitems;
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ENTRY:
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foreach my $it (@items)
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{
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# load required data
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my $itemid = $it->{'itemid'};
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my $ditemid = $itemid*256 + $it->{'anum'};
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next ENTRY if $posteru{$it->{'posterid'}} && $posteru{$it->{'posterid'}}->{'statusvis'} eq 'S';
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my $props = $it->{'props'};
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# see if we have a subject and clean it
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my $subject = $it->{'text'}->[0];
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if ($subject) {
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$subject =~ s/[\r\n]/ /g;
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LJ::CleanHTML::clean_subject_all(\$subject);
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}
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# an HTML link to the entry. used if we truncate or summarize
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my $readmore = "<b>(<a href=\"$journalinfo->{link}$ditemid.html\">Read more ...</a>)</b>";
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# empty string so we don't waste time cleaning an entry that won't be used
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my $event = $u->{'opt_synlevel'} eq 'title' ? '' : $it->{'text'}->[1];
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# clean the event, if non-empty
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my $ppid = 0;
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if ($event) {
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# users without 'full_rss' get their logtext bodies truncated
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# do this now so that the html cleaner will hopefully fix html we break
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unless (LJ::get_cap($u, 'full_rss')) {
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my $trunc = LJ::text_trim($event, 0, 80);
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$event = "$trunc $readmore" if $trunc ne $event;
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}
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LJ::CleanHTML::clean_event(\$event, {'ljcut_disable'=>1},
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{ 'preformatted' => $props->{'opt_preformatted'} });
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# do this after clean so we don't have to about know whether or not
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# the event is preformatted
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if ($u->{'opt_synlevel'} eq 'summary') {
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# assume the first paragraph is terminated by two <br> or a </p>
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# valid XML tags should be handled, even though it makes an uglier regex
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if ($event =~ m!((<br\s*/?\>(</br\s*>)?\s*){2})|(</p\s*>)!i) {
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# everything before the matched tag + the tag itself
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# + a link to read more
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$event = $` . $& . $readmore;
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}
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}
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LJ::Poll::replace_polls_with_links(\$event);
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LJ::EmbedModule->expand_entry($u, \$event, ('content_only' => 1));
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$ppid = $1
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if $event =~ m!<lj-phonepost journalid=['"]\d+['"] dpid=['"](\d+)['"] />!; #'
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}
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my $mood;
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if ($props->{'current_mood'}) {
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$mood = $props->{'current_mood'};
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} elsif ($props->{'current_moodid'}) {
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$mood = LJ::mood_name($props->{'current_moodid'}+0);
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}
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if ($ljr) {
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LJR::Distributed::sign_exported_rss_entry($u, $it->{'itemid'}, $it->{'anum'}, \$event);
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}
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my $createtime = $LJ::EndOfTime - $it->{rlogtime};
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my $cleanitem = {
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itemid => $itemid,
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ditemid => $ditemid,
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subject => $subject,
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event => $event,
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createtime => $createtime,
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eventtime => $it->{alldatepart}, # ugly: this is of a different format than the other two times.
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modtime => $props->{revtime} || $createtime,
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comments => ($props->{'opt_nocomments'} == 0),
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music => $props->{'current_music'},
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mood => $mood,
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ppid => $ppid,
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tags => $props->{'tags'},
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};
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push @cleanitems, $cleanitem;
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}
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# fix up the build date to use entry-time
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# (empty journals show 01 Jan 1970 00:00:00 GMT as build date and Last-Modified time).
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$journalinfo->{'builddate'} = LJ::time_to_http(@items ? $LJ::EndOfTime - $items[0]->{'rlogtime'} : 0),
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return $viewfunc->($journalinfo, $u, $opts, \@cleanitems, $remote, $lastmod);
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}
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# the creator for the RSS XML syndication view
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sub create_view_rss
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{
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my ($journalinfo, $u, $opts, $cleanitems, $remote, $lastmod) = @_;
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my $ret;
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# header
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$ret .= "<?xml version='1.0' encoding='$opts->{'saycharset'}' ?>\n";
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$ret .= LJ::run_hook("bot_director", "<!-- ", " -->") . "\n";
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$ret .= "<rss version='2.0' xmlns:lj='http://www.livejournal.org/rss/lj/1.0/'>\n";
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# channel attributes
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$ret .= "<channel>\n";
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$ret .= " <title>" . LJ::exml($journalinfo->{title}) . "</title>\n";
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$ret .= " <link>$journalinfo->{link}</link>\n";
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$ret .= " <description>" . LJ::exml("$journalinfo->{title} - $LJ::SITENAME") . "</description>\n";
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if ($u->{'opt_blockrobots'}) {
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$ret .= " <copyright>noindex</copyright>\n";
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}
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$ret .= " <managingEditor>" . $journalinfo->{title} . "</managingEditor>\n" if $journalinfo->{email};
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$ret .= " <lastBuildDate>$journalinfo->{builddate}</lastBuildDate>\n";
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$ret .= " <generator>LiveJournal / $LJ::SITENAME</generator>\n";
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# TODO: add 'language' field when user.lang has more useful information
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### image block, returns info for their current userpic
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if ($u->{'defaultpicid'}) {
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my $pic = {};
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LJ::load_userpics($pic, [ $u, $u->{'defaultpicid'} ]);
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$pic = $pic->{$u->{'defaultpicid'}}; # flatten
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$ret .= " <image>\n";
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$ret .= " <url>$LJ::USERPIC_ROOT/$u->{'defaultpicid'}/$u->{'userid'}</url>\n";
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$ret .= " <title>" . LJ::exml($journalinfo->{title}) . "</title>\n";
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$ret .= " <link>$journalinfo->{link}</link>\n";
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$ret .= " <width>$pic->{'width'}</width>\n";
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$ret .= " <height>$pic->{'height'}</height>\n";
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$ret .= " </image>\n\n";
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}
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# output individual item blocks
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foreach my $it (@$cleanitems)
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{
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my $itemid = $it->{itemid};
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my $ditemid = $it->{ditemid};
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$ret .= "<item>\n";
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$ret .= " <guid isPermaLink='true'>$journalinfo->{link}$ditemid.html</guid>\n";
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$ret .= " <pubDate>" . LJ::time_to_http($it->{createtime}) . "</pubDate>\n";
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$ret .= " <title>" . LJ::exml($it->{subject}) . "</title>\n" if $it->{subject};
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## hide e-mail for security concern
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## $ret .= " <author>" . LJ::exml($journalinfo->{email}) . "</author>" if $journalinfo->{email};
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$ret .= " <link>$journalinfo->{link}$ditemid.html</link>\n";
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# omit the description tag if we're only syndicating titles
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# note: the $event was also emptied earlier, in make_feed
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unless ($u->{'opt_synlevel'} eq 'title') {
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$ret .= " <description>" . LJ::exml($it->{event}) . "</description>\n";
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}
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if ($it->{comments}) {
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$ret .= " <comments>$journalinfo->{link}$ditemid.html</comments>\n";
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}
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$ret .= " <category>$_</category>\n" foreach map { LJ::exml($_) } @{$it->{tags} || []};
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# support 'podcasting' enclosures
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$ret .= LJ::run_hook( "pp_rss_enclosure",
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{ userid => $u->{userid}, ppid => $it->{ppid} }) if $it->{ppid};
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# TODO: add author field with posterid's email address, respect communities
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$ret .= " <lj:music>" . LJ::exml($it->{music}) . "</lj:music>\n" if $it->{music};
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$ret .= " <lj:mood>" . LJ::exml($it->{mood}) . "</lj:mood>\n" if $it->{mood};
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$ret .= "</item>\n";
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}
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$ret .= "</channel>\n";
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$ret .= "</rss>\n";
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#store to memcached, anonymous
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LJ::MemCache::set([$u->{userid}, "rss:$u->{userid}"], {lastmod => $lastmod, text => $ret}) unless $remote;
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return $ret;
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}
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# the creator for the Atom view
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# keys of $opts:
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# saycharset - required: the charset of the feed
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# noheader - only output an <entry>..</entry> block. off by default
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# apilinks - output AtomAPI links for posting a new entry or
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# getting/editing/deleting an existing one. off by default
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# TODO: define and use an 'lj:' namespace
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sub create_view_atom
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{
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my ($journalinfo, $u, $opts, $cleanitems) = @_;
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my $ret;
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# prolog line
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$ret .= "<?xml version='1.0' encoding='$opts->{'saycharset'}' ?>\n";
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$ret .= LJ::run_hook("bot_director", "<!-- ", " -->");
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# AtomAPI interface
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my $api = $opts->{'apilinks'} ? "$LJ::SITEROOT/interface/atom" :
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"$LJ::SITEROOT/users/$u->{user}/data/atom";
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# header
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unless ($opts->{'noheader'}) {
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$ret .= "<feed version='0.3' xmlns='http://purl.org/atom/ns#'>\n";
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# attributes
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$ret .= "<title mode='escaped'>" . LJ::exml($journalinfo->{title}) . "</title>\n";
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$ret .= "<tagline mode='escaped'>" . LJ::exml($journalinfo->{subtitle}) . "</tagline>\n"
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if $journalinfo->{subtitle};
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$ret .= "<link rel='alternate' type='text/html' href='$journalinfo->{link}' />\n";
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# last update
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$ret .= "<modified>" . LJ::time_to_w3c($journalinfo->{'modtime'}, 'Z')
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. "</modified>";
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# link to the AtomAPI version of this feed
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$ret .= "<link rel='service.feed' type='application/x.atom+xml' title='";
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$ret .= LJ::ehtml($journalinfo->{title});
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$ret .= $opts->{'apilinks'} ? "' href='$api/feed' />" : "' href='$api' />";
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if ($opts->{'apilinks'}) {
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$ret .= "<link rel='service.post' type='application/x.atom+xml' title='Create a new post' href='$api/post' />";
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}
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}
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# output individual item blocks
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foreach my $it (@$cleanitems)
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{
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my $itemid = $it->{itemid};
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my $ditemid = $it->{ditemid};
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$ret .= " <entry xmlns=\"http://purl.org/atom/ns#\">\n";
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# include empty tag if we don't have a subject.
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$ret .= " <title mode='escaped'>" . LJ::exml($it->{subject}) . "</title>\n";
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$ret .= " <id>urn:lj:$LJ::DOMAIN:atom1:$journalinfo->{u}{user}:$ditemid</id>\n";
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$ret .= " <link rel='alternate' type='text/html' href='$journalinfo->{link}$ditemid.html' />\n";
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if ($opts->{'apilinks'}) {
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$ret .= "<link rel='service.edit' type='application/x.atom+xml' title='Edit this post' href='$api/edit/$itemid' />";
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}
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$ret .= " <created>" . LJ::time_to_w3c($it->{createtime}, 'Z') . "</created>\n"
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if $it->{createtime} != $it->{modtime};
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my ($year, $mon, $mday, $hour, $min, $sec) = split(/ /, $it->{eventtime});
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$ret .= " <issued>" . sprintf("%04d-%02d-%02dT%02d:%02d:%02d",
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$year, $mon, $mday,
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$hour, $min, $sec) . "</issued>\n";
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$ret .= " <modified>" . LJ::time_to_w3c($it->{modtime}, 'Z') . "</modified>\n";
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$ret .= " <author>\n";
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$ret .= " <name>" . LJ::exml($journalinfo->{u}{name}) . "</name>\n";
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## hide e-mail for security concern
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## $ret .= " <email>" . LJ::exml($journalinfo->{email}) . "</email>\n" if $journalinfo->{email};
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$ret .= " </author>\n";
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$ret .= " <category term='$_' />\n" foreach map { LJ::exml($_) } @{$it->{tags} || []};
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# if syndicating the complete entry
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# -print a content tag
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# elsif syndicating summaries
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# -print a summary tag
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# else (code omitted), we're syndicating title only
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# -print neither (the title has already been printed)
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# note: the $event was also emptied earlier, in make_feed
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if ($u->{'opt_synlevel'} eq 'full') {
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$ret .= " <content type='text/html' mode='escaped'>" . LJ::exml($it->{event}) . "</content>\n";
|
|
} elsif ($u->{'opt_synlevel'} eq 'summary') {
|
|
$ret .= " <summary type='text/html' mode='escaped'>" . LJ::exml($it->{event}) . "</summary>\n";
|
|
}
|
|
|
|
$ret .= " </entry>\n";
|
|
}
|
|
|
|
unless ($opts->{'noheader'}) {
|
|
$ret .= "</feed>\n";
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
# create a FOAF page for a user
|
|
sub create_view_foaf {
|
|
my ($journalinfo, $u, $opts) = @_;
|
|
my $comm = ($u->{journaltype} eq 'C');
|
|
|
|
my $ret;
|
|
|
|
# return nothing if we're not a user
|
|
unless ($u->{journaltype} eq 'P' || $comm) {
|
|
$opts->{handler_return} = 404;
|
|
return undef;
|
|
}
|
|
|
|
# set our content type
|
|
$opts->{contenttype} = 'application/rdf+xml; charset=' . $opts->{saycharset};
|
|
|
|
# setup userprops we will need
|
|
LJ::load_user_props($u, qw{
|
|
aolim icq yahoo jabber msn url urlname external_foaf_url
|
|
});
|
|
|
|
# create bare foaf document, for now
|
|
$ret = "<?xml version='1.0'?>\n";
|
|
$ret .= LJ::run_hook("bot_director", "<!-- ", " -->");
|
|
$ret .= "<rdf:RDF\n";
|
|
$ret .= " xml:lang=\"en\"\n";
|
|
$ret .= " xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n";
|
|
$ret .= " xmlns:rdfs=\"http://www.w3.org/2000/01/rdf-schema#\"\n";
|
|
$ret .= " xmlns:foaf=\"http://xmlns.com/foaf/0.1/\"\n";
|
|
$ret .= " xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n";
|
|
|
|
# precompute some values
|
|
my $digest = Digest::SHA1::sha1_hex('mailto:' . $u->{email});
|
|
|
|
# channel attributes
|
|
$ret .= ($comm ? " <foaf:Group>\n" : " <foaf:Person>\n");
|
|
$ret .= " <foaf:nick>$u->{user}</foaf:nick>\n";
|
|
if ($u->{bdate} && $u->{bdate} ne "0000-00-00" && !$comm && $u->{allow_infoshow} eq 'Y') {
|
|
my $bdate = $u->{bdate};
|
|
$bdate =~ s/^0000-//;
|
|
$ret .= " <foaf:dateOfBirth>$bdate</foaf:dateOfBirth>\n";
|
|
}
|
|
$ret .= " <foaf:mbox_sha1sum>$digest</foaf:mbox_sha1sum>\n";
|
|
$ret .= " <foaf:page>\n";
|
|
$ret .= " <foaf:Document rdf:about=\"$LJ::SITEROOT/userinfo.bml?user=$u->{user}\">\n";
|
|
$ret .= " <dc:title>$LJ::SITENAME Profile</dc:title>\n";
|
|
$ret .= " <dc:description>Full $LJ::SITENAME profile, including information such as interests and bio.</dc:description>\n";
|
|
$ret .= " </foaf:Document>\n";
|
|
$ret .= " </foaf:page>\n";
|
|
|
|
# we want to bail out if they have an external foaf file, because
|
|
# we want them to be able to provide their own information.
|
|
if ($u->{external_foaf_url}) {
|
|
$ret .= " <rdfs:seeAlso rdf:resource=\"" . LJ::eurl($u->{external_foaf_url}) . "\" />\n";
|
|
$ret .= ($comm ? " </foaf:Group>\n" : " </foaf:Person>\n");
|
|
$ret .= "</rdf:RDF>\n";
|
|
return $ret;
|
|
}
|
|
|
|
# contact type information
|
|
my %types = (
|
|
aolim => 'aimChatID',
|
|
icq => 'icqChatID',
|
|
yahoo => 'yahooChatID',
|
|
msn => 'msnChatID',
|
|
jabber => 'jabberID',
|
|
);
|
|
if ($u->{allow_contactshow} eq 'Y') {
|
|
foreach my $type (keys %types) {
|
|
next unless $u->{$type};
|
|
$ret .= " <foaf:$types{$type}>" . LJ::exml($u->{$type}) . "</foaf:$types{$type}>\n";
|
|
}
|
|
}
|
|
|
|
# include a user's journal page and web site info
|
|
$ret .= " <foaf:weblog rdf:resource=\"" . LJ::journal_base($u) . "/\"/>\n";
|
|
if ($u->{url}) {
|
|
$ret .= " <foaf:homepage rdf:resource=\"" . LJ::eurl($u->{url});
|
|
$ret .= "\" dc:title=\"" . LJ::exml($u->{urlname}) . "\" />\n";
|
|
}
|
|
|
|
# interests, please!
|
|
# arrayref of interests rows: [ intid, intname, intcount ]
|
|
my $intu = LJ::get_interests($u);
|
|
foreach my $int (@$intu) {
|
|
LJ::text_out(\$int->[1]); # 1==interest
|
|
$ret .= " <foaf:interest dc:title=\"". LJ::exml($int->[1]) . "\" " .
|
|
"rdf:resource=\"$LJ::SITEROOT/interests.bml?int=" . LJ::eurl($int->[1]) . "\" />\n";
|
|
}
|
|
|
|
# check if the user has a "FOAF-knows" group
|
|
my $groups = LJ::get_friend_group($u->{userid}, { name => 'FOAF-knows' });
|
|
my $mask = $groups ? 1 << $groups->{groupnum} : 0;
|
|
|
|
# now information on who you know, limited to a certain maximum number of users
|
|
my $friends = LJ::get_friends($u->{userid}, $mask);
|
|
my @ids = keys %$friends;
|
|
@ids = splice(@ids, 0, $LJ::MAX_FOAF_FRIENDS) if @ids > $LJ::MAX_FOAF_FRIENDS;
|
|
|
|
# now load
|
|
my %users;
|
|
LJ::load_userids_multiple([ map { $_, \$users{$_} } @ids ], [$u]);
|
|
|
|
# iterate to create data structure
|
|
foreach my $friendid (@ids) {
|
|
next if $friendid == $u->{userid};
|
|
my $fu = $users{$friendid};
|
|
next if $fu->{statusvis} =~ /[DXS]/ || $fu->{journaltype} ne 'P';
|
|
$ret .= $comm ? " <foaf:member>\n" : " <foaf:knows>\n";
|
|
$ret .= " <foaf:Person>\n";
|
|
$ret .= " <foaf:nick>$fu->{'user'}</foaf:nick>\n";
|
|
$ret .= " <rdfs:seeAlso rdf:resource=\"" . LJ::journal_base($fu) ."/data/foaf\" />\n";
|
|
$ret .= " <foaf:weblog rdf:resource=\"" . LJ::journal_base($fu) . "/\"/>\n";
|
|
$ret .= " </foaf:Person>\n";
|
|
$ret .= $comm ? " </foaf:member>\n" : " </foaf:knows>\n";
|
|
}
|
|
|
|
# finish off the document
|
|
$ret .= $comm ? " </foaf:Group>\n" : " </foaf:Person>\n";
|
|
$ret .= "</rdf:RDF>\n";
|
|
|
|
return $ret;
|
|
}
|
|
|
|
1;
|