482 lines
13 KiB
Perl
482 lines
13 KiB
Perl
#!/usr/bin/perl
|
|
# Blog aggregation plugin.
|
|
package IkiWiki::Plugin::aggregate;
|
|
|
|
use warnings;
|
|
use strict;
|
|
use IkiWiki 2.00;
|
|
use HTML::Entities;
|
|
use HTML::Parser;
|
|
use HTML::Tagset;
|
|
use URI;
|
|
use open qw{:utf8 :std};
|
|
|
|
my %feeds;
|
|
my %guids;
|
|
|
|
sub import { #{{{
|
|
hook(type => "getopt", id => "aggregate", call => \&getopt);
|
|
hook(type => "checkconfig", id => "aggregate", call => \&checkconfig);
|
|
hook(type => "filter", id => "aggregate", call => \&filter);
|
|
hook(type => "preprocess", id => "aggregate", call => \&preprocess);
|
|
hook(type => "delete", id => "aggregate", call => \&delete);
|
|
hook(type => "savestate", id => "aggregate", call => \&savestate);
|
|
} # }}}
|
|
|
|
sub getopt () { #{{{
|
|
eval q{use Getopt::Long};
|
|
error($@) if $@;
|
|
Getopt::Long::Configure('pass_through');
|
|
GetOptions("aggregate" => \$config{aggregate});
|
|
} #}}}
|
|
|
|
sub checkconfig () { #{{{
|
|
if ($config{aggregate} && ! ($config{post_commit} &&
|
|
IkiWiki::commit_hook_enabled())) {
|
|
if (! IkiWiki::lockwiki(0)) {
|
|
debug("wiki is locked by another process, not aggregating");
|
|
exit 1;
|
|
}
|
|
|
|
loadstate();
|
|
IkiWiki::loadindex();
|
|
aggregate();
|
|
expire();
|
|
savestate();
|
|
clearstate();
|
|
|
|
IkiWiki::unlockwiki();
|
|
}
|
|
} #}}}
|
|
|
|
sub filter (@) { #{{{
|
|
my %params=@_;
|
|
my $page=$params{page};
|
|
|
|
loadstate(); # if not already loaded
|
|
# Mark all feeds originating on this page as removable;
|
|
# preprocess will unmark those that still exist.
|
|
remove_feeds($page);
|
|
|
|
return $params{content};
|
|
} # }}}
|
|
|
|
sub preprocess (@) { #{{{
|
|
my %params=@_;
|
|
|
|
foreach my $required (qw{name url}) {
|
|
if (! exists $params{$required}) {
|
|
return "[[aggregate ".sprintf(gettext("missing %s parameter"), $required)."]]";
|
|
}
|
|
}
|
|
|
|
my $feed={};
|
|
my $name=$params{name};
|
|
if (exists $feeds{$name}) {
|
|
$feed=$feeds{$name};
|
|
}
|
|
else {
|
|
$feeds{$name}=$feed;
|
|
}
|
|
$feed->{name}=$name;
|
|
$feed->{sourcepage}=$params{page};
|
|
$feed->{url}=$params{url};
|
|
my $dir=exists $params{dir} ? $params{dir} : $params{page}."/".IkiWiki::titlepage($params{name});
|
|
$dir=~s/^\/+//;
|
|
($dir)=$dir=~/$config{wiki_file_regexp}/;
|
|
$feed->{dir}=$dir;
|
|
$feed->{feedurl}=defined $params{feedurl} ? $params{feedurl} : "";
|
|
$feed->{updateinterval}=defined $params{updateinterval} ? $params{updateinterval} * 60 : 15 * 60;
|
|
$feed->{expireage}=defined $params{expireage} ? $params{expireage} : 0;
|
|
$feed->{expirecount}=defined $params{expirecount} ? $params{expirecount} : 0;
|
|
delete $feed->{remove};
|
|
delete $feed->{expired};
|
|
$feed->{lastupdate}=0 unless defined $feed->{lastupdate};
|
|
$feed->{numposts}=0 unless defined $feed->{numposts};
|
|
$feed->{newposts}=0 unless defined $feed->{newposts};
|
|
$feed->{message}=gettext("new feed") unless defined $feed->{message};
|
|
$feed->{error}=0 unless defined $feed->{error};
|
|
$feed->{tags}=[];
|
|
while (@_) {
|
|
my $key=shift;
|
|
my $value=shift;
|
|
if ($key eq 'tag') {
|
|
push @{$feed->{tags}}, $value;
|
|
}
|
|
}
|
|
|
|
return "<a href=\"".$feed->{url}."\">".$feed->{name}."</a>: ".
|
|
($feed->{error} ? "<em>" : "").$feed->{message}.
|
|
($feed->{error} ? "</em>" : "").
|
|
" (".$feed->{numposts}." ".gettext("posts").
|
|
($feed->{newposts} ? "; ".$feed->{newposts}.
|
|
" ".gettext("new") : "").
|
|
")";
|
|
} # }}}
|
|
|
|
sub delete (@) { #{{{
|
|
my @files=@_;
|
|
|
|
# Remove feed data for removed pages.
|
|
foreach my $file (@files) {
|
|
my $page=pagename($file);
|
|
remove_feeds($page);
|
|
}
|
|
} #}}}
|
|
|
|
my $state_loaded=0;
|
|
sub loadstate () { #{{{
|
|
return if $state_loaded;
|
|
if (-e "$config{wikistatedir}/aggregate") {
|
|
open(IN, "$config{wikistatedir}/aggregate") ||
|
|
die "$config{wikistatedir}/aggregate: $!";
|
|
while (<IN>) {
|
|
$_=IkiWiki::possibly_foolish_untaint($_);
|
|
chomp;
|
|
my $data={};
|
|
foreach my $i (split(/ /, $_)) {
|
|
my ($field, $val)=split(/=/, $i, 2);
|
|
if ($field eq "name" || $field eq "feed" ||
|
|
$field eq "guid" || $field eq "message") {
|
|
$data->{$field}=decode_entities($val, " \t\n");
|
|
}
|
|
elsif ($field eq "tag") {
|
|
push @{$data->{tags}}, $val;
|
|
}
|
|
else {
|
|
$data->{$field}=$val;
|
|
}
|
|
}
|
|
|
|
if (exists $data->{name}) {
|
|
$feeds{$data->{name}}=$data;
|
|
}
|
|
elsif (exists $data->{guid}) {
|
|
$guids{$data->{guid}}=$data;
|
|
}
|
|
}
|
|
|
|
close IN;
|
|
|
|
$state_loaded=1;
|
|
}
|
|
} #}}}
|
|
|
|
sub savestate () { #{{{
|
|
eval q{use HTML::Entities};
|
|
error($@) if $@;
|
|
my $newfile="$config{wikistatedir}/aggregate.new";
|
|
# TODO: This cleanup function could use improvement. Any newly
|
|
# aggregated files are left behind unrecorded, and should be deleted.
|
|
my $cleanup = sub { unlink($newfile) };
|
|
open (OUT, ">$newfile") || error("open $newfile: $!", $cleanup);
|
|
foreach my $data (values %feeds, values %guids) {
|
|
if ($data->{remove}) {
|
|
if ($data->{name}) {
|
|
foreach my $guid (values %guids) {
|
|
if ($guid->{feed} eq $data->{name}) {
|
|
$guid->{remove}=1;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
unlink pagefile($data->{page});
|
|
}
|
|
next;
|
|
}
|
|
elsif ($data->{expired} && exists $data->{page}) {
|
|
unlink pagefile($data->{page});
|
|
delete $data->{page};
|
|
delete $data->{md5};
|
|
}
|
|
|
|
my @line;
|
|
foreach my $field (keys %$data) {
|
|
if ($field eq "name" || $field eq "feed" ||
|
|
$field eq "guid" || $field eq "message") {
|
|
push @line, "$field=".encode_entities($data->{$field}, " \t\n");
|
|
}
|
|
elsif ($field eq "tags") {
|
|
push @line, "tag=$_" foreach @{$data->{tags}};
|
|
}
|
|
else {
|
|
push @line, "$field=".$data->{$field};
|
|
}
|
|
}
|
|
print OUT join(" ", @line)."\n" || error("write $newfile: $!", $cleanup);
|
|
}
|
|
close OUT || error("save $newfile: $!", $cleanup);
|
|
rename($newfile, "$config{wikistatedir}/aggregate") ||
|
|
error("rename $newfile: $!", $cleanup);
|
|
} #}}}
|
|
|
|
sub clearstate () { #{{{
|
|
%feeds=();
|
|
%guids=();
|
|
$state_loaded=0;
|
|
} #}}}
|
|
|
|
sub expire () { #{{{
|
|
foreach my $feed (values %feeds) {
|
|
next unless $feed->{expireage} || $feed->{expirecount};
|
|
my $count=0;
|
|
foreach my $item (sort { $IkiWiki::pagectime{$b->{page}} <=> $IkiWiki::pagectime{$a->{page}} }
|
|
grep { exists $_->{page} && $_->{feed} eq $feed->{name} && $IkiWiki::pagectime{$_->{page}} }
|
|
values %guids) {
|
|
if ($feed->{expireage}) {
|
|
my $days_old = (time - $IkiWiki::pagectime{$item->{page}}) / 60 / 60 / 24;
|
|
if ($days_old > $feed->{expireage}) {
|
|
debug(sprintf(gettext("expiring %s (%s days old)"),
|
|
$item->{page}, $days_old));
|
|
$item->{expired}=1;
|
|
}
|
|
}
|
|
elsif ($feed->{expirecount} &&
|
|
$count >= $feed->{expirecount}) {
|
|
debug(sprintf(gettext("expiring %s"), $item->{page}));
|
|
$item->{expired}=1;
|
|
}
|
|
else {
|
|
$count++;
|
|
}
|
|
}
|
|
}
|
|
} #}}}
|
|
|
|
sub aggregate () { #{{{
|
|
eval q{use XML::Feed};
|
|
error($@) if $@;
|
|
eval q{use URI::Fetch};
|
|
error($@) if $@;
|
|
eval q{use HTML::Entities};
|
|
error($@) if $@;
|
|
|
|
foreach my $feed (values %feeds) {
|
|
next unless $config{rebuild} ||
|
|
time - $feed->{lastupdate} >= $feed->{updateinterval};
|
|
$feed->{lastupdate}=time;
|
|
$feed->{newposts}=0;
|
|
$feed->{message}=sprintf(gettext("processed ok at %s"),
|
|
displaytime($feed->{lastupdate}));
|
|
$feed->{error}=0;
|
|
$IkiWiki::forcerebuild{$feed->{sourcepage}}=1;
|
|
|
|
debug(sprintf(gettext("checking feed %s ..."), $feed->{name}));
|
|
|
|
if (! length $feed->{feedurl}) {
|
|
my @urls=XML::Feed->find_feeds($feed->{url});
|
|
if (! @urls) {
|
|
$feed->{message}=sprintf(gettext("could not find feed at %s"), $feed->{url});
|
|
$feed->{error}=1;
|
|
debug($feed->{message});
|
|
next;
|
|
}
|
|
$feed->{feedurl}=pop @urls;
|
|
}
|
|
my $res=URI::Fetch->fetch($feed->{feedurl});
|
|
if (! $res) {
|
|
$feed->{message}=URI::Fetch->errstr;
|
|
$feed->{error}=1;
|
|
debug($feed->{message});
|
|
next;
|
|
}
|
|
if ($res->status == URI::Fetch::URI_GONE()) {
|
|
$feed->{message}=gettext("feed not found");
|
|
$feed->{error}=1;
|
|
debug($feed->{message});
|
|
next;
|
|
}
|
|
my $content=$res->content;
|
|
my $f=eval{XML::Feed->parse(\$content)};
|
|
if ($@) {
|
|
# One common cause of XML::Feed crashing is a feed
|
|
# that contains invalid UTF-8 sequences. Convert
|
|
# feed to ascii to try to work around.
|
|
$feed->{message}.=" ".sprintf(gettext("(invalid UTF-8 stripped from feed)"));
|
|
$content=Encode::decode_utf8($content);
|
|
$f=eval{XML::Feed->parse(\$content)};
|
|
}
|
|
if ($@) {
|
|
$feed->{message}=gettext("feed crashed XML::Feed!")." ($@)";
|
|
$feed->{error}=1;
|
|
debug($feed->{message});
|
|
next;
|
|
}
|
|
if (! $f) {
|
|
$feed->{message}=XML::Feed->errstr;
|
|
$feed->{error}=1;
|
|
debug($feed->{message});
|
|
next;
|
|
}
|
|
|
|
foreach my $entry ($f->entries) {
|
|
add_page(
|
|
feed => $feed,
|
|
title => defined $entry->title ? decode_entities($entry->title) : "untitled",
|
|
link => $entry->link,
|
|
content => defined $entry->content->body ? $entry->content->body : "",
|
|
guid => defined $entry->id ? $entry->id : time."_".$feed->name,
|
|
ctime => $entry->issued ? ($entry->issued->epoch || time) : time,
|
|
);
|
|
}
|
|
}
|
|
} #}}}
|
|
|
|
sub add_page (@) { #{{{
|
|
my %params=@_;
|
|
|
|
my $feed=$params{feed};
|
|
my $guid={};
|
|
my $mtime;
|
|
if (exists $guids{$params{guid}}) {
|
|
# updating an existing post
|
|
$guid=$guids{$params{guid}};
|
|
return if $guid->{expired};
|
|
}
|
|
else {
|
|
# new post
|
|
$guid->{guid}=$params{guid};
|
|
$guids{$params{guid}}=$guid;
|
|
$mtime=$params{ctime};
|
|
$feed->{numposts}++;
|
|
$feed->{newposts}++;
|
|
|
|
# assign it an unused page
|
|
my $page=IkiWiki::titlepage($params{title});
|
|
# escape slashes and periods in title so it doesn't specify
|
|
# directory name or trigger ".." disallowing code.
|
|
$page=~s!([/.])!"__".ord($1)."__"!eg;
|
|
$page=$feed->{dir}."/".$page;
|
|
($page)=$page=~/$config{wiki_file_regexp}/;
|
|
if (! defined $page || ! length $page) {
|
|
$page=$feed->{dir}."/item";
|
|
}
|
|
my $c="";
|
|
while (exists $IkiWiki::pagecase{lc $page.$c} ||
|
|
-e pagefile($page.$c)) {
|
|
$c++
|
|
}
|
|
|
|
# Make sure that the file name isn't too long.
|
|
# NB: This doesn't check for path length limits.
|
|
my $max=POSIX::pathconf($config{srcdir}, &POSIX::_PC_NAME_MAX);
|
|
if (defined $max && length(htmlfn($page)) >= $max) {
|
|
$c="";
|
|
$page=$feed->{dir}."/item";
|
|
while (exists $IkiWiki::pagecase{lc $page.$c} ||
|
|
-e pagefile($page.$c)) {
|
|
$c++
|
|
}
|
|
}
|
|
|
|
$guid->{page}=$page;
|
|
debug(sprintf(gettext("creating new page %s"), $page));
|
|
}
|
|
$guid->{feed}=$feed->{name};
|
|
|
|
# To write or not to write? Need to avoid writing unchanged pages
|
|
# to avoid unneccessary rebuilding. The mtime from rss cannot be
|
|
# trusted; let's use a digest.
|
|
eval q{use Digest::MD5 'md5_hex'};
|
|
error($@) if $@;
|
|
require Encode;
|
|
my $digest=md5_hex(Encode::encode_utf8($params{content}));
|
|
return unless ! exists $guid->{md5} || $guid->{md5} ne $digest || $config{rebuild};
|
|
$guid->{md5}=$digest;
|
|
|
|
# Create the page.
|
|
my $template=template("aggregatepost.tmpl", blind_cache => 1);
|
|
$template->param(title => $params{title})
|
|
if defined $params{title} && length($params{title});
|
|
$template->param(content => htmlescape(htmlabs($params{content}, $feed->{feedurl})));
|
|
$template->param(name => $feed->{name});
|
|
$template->param(url => $feed->{url});
|
|
$template->param(permalink => urlabs($params{link}, $feed->{feedurl}))
|
|
if defined $params{link};
|
|
if (ref $feed->{tags}) {
|
|
$template->param(tags => [map { tag => $_ }, @{$feed->{tags}}]);
|
|
}
|
|
writefile(htmlfn($guid->{page}), $config{srcdir},
|
|
$template->output);
|
|
|
|
# Set the mtime, this lets the build process get the right creation
|
|
# time on record for the new page.
|
|
utime $mtime, $mtime, pagefile($guid->{page}) if defined $mtime;
|
|
} #}}}
|
|
|
|
sub htmlescape ($) { #{{{
|
|
# escape accidental wikilinks and preprocessor stuff
|
|
my $html=shift;
|
|
$html=~s/(?<!\\)\[\[/\\\[\[/g;
|
|
return $html;
|
|
} #}}}
|
|
|
|
sub urlabs ($$) { #{{{
|
|
my $url=shift;
|
|
my $urlbase=shift;
|
|
|
|
URI->new_abs($url, $urlbase)->as_string;
|
|
} #}}}
|
|
|
|
sub htmlabs ($$) { #{{{
|
|
# Convert links in html from relative to absolute.
|
|
# Note that this is a heuristic, which is not specified by the rss
|
|
# spec and may not be right for all feeds. Also, see Debian
|
|
# bug #381359.
|
|
my $html=shift;
|
|
my $urlbase=shift;
|
|
|
|
my $ret="";
|
|
my $p = HTML::Parser->new(api_version => 3);
|
|
$p->handler(default => sub { $ret.=join("", @_) }, "text");
|
|
$p->handler(start => sub {
|
|
my ($tagname, $pos, $text) = @_;
|
|
if (ref $HTML::Tagset::linkElements{$tagname}) {
|
|
while (4 <= @$pos) {
|
|
# use attribute sets from right to left
|
|
# to avoid invalidating the offsets
|
|
# when replacing the values
|
|
my($k_offset, $k_len, $v_offset, $v_len) =
|
|
splice(@$pos, -4);
|
|
my $attrname = lc(substr($text, $k_offset, $k_len));
|
|
next unless grep { $_ eq $attrname } @{$HTML::Tagset::linkElements{$tagname}};
|
|
next unless $v_offset; # 0 v_offset means no value
|
|
my $v = substr($text, $v_offset, $v_len);
|
|
$v =~ s/^([\'\"])(.*)\1$/$2/;
|
|
my $new_v=urlabs($v, $urlbase);
|
|
$new_v =~ s/\"/"/g; # since we quote with ""
|
|
substr($text, $v_offset, $v_len) = qq("$new_v");
|
|
}
|
|
}
|
|
$ret.=$text;
|
|
}, "tagname, tokenpos, text");
|
|
$p->parse($html);
|
|
$p->eof;
|
|
|
|
return $ret;
|
|
} #}}}
|
|
|
|
sub remove_feeds () { #{{{
|
|
my $page=shift;
|
|
|
|
my %removed;
|
|
foreach my $id (keys %feeds) {
|
|
if ($feeds{$id}->{sourcepage} eq $page) {
|
|
$feeds{$id}->{remove}=1;
|
|
$removed{$id}=1;
|
|
}
|
|
}
|
|
} #}}}
|
|
|
|
sub pagefile ($) { #{{{
|
|
my $page=shift;
|
|
|
|
return "$config{srcdir}/".htmlfn($page);
|
|
} #}}}
|
|
|
|
sub htmlfn ($) { #{{{
|
|
return shift().".".$config{htmlext};
|
|
} #}}}
|
|
|
|
1
|