# Copyright (C) 2013, Eric Wong and all contributors # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt) package PublicInbox::Feed; use strict; use warnings; use Email::Address; use Email::MIME; use Date::Parse qw(strptime str2time); use PublicInbox::Hval; use PublicInbox::GitCatFile; use constant { DATEFMT => '%Y-%m-%dT%H:%M:%SZ', # atom standard MAX_PER_PAGE => 25, # this needs to be tunable }; # main function sub generate { my ($class, $args) = @_; require XML::Atom::SimpleFeed; require PublicInbox::View; require POSIX; my $max = $args->{max} || MAX_PER_PAGE; my $feed_opts = get_feedopts($args); my $addr = $feed_opts->{address}; $addr = $addr->[0] if ref($addr); my $feed = XML::Atom::SimpleFeed->new( title => $feed_opts->{description} || "unnamed feed", link => $feed_opts->{url} || "http://example.com/", link => { rel => 'self', href => $feed_opts->{atomurl} || "http://example.com/atom.xml", }, id => 'mailto:' . ($addr || 'public-inbox@example.com'), updated => POSIX::strftime(DATEFMT, gmtime), ); my $git = PublicInbox::GitCatFile->new($args->{git_dir}); each_recent_blob($args, sub { my ($add) = @_; add_to_feed($feed_opts, $feed, $add, $git); }); $git = undef; # destroy pipes Email::Address->purge_cache; $feed->as_string; } sub generate_html_index { my ($class, $args) = @_; require PublicInbox::Thread; my $max = $args->{max} || MAX_PER_PAGE; my $feed_opts = get_feedopts($args); my $title = $feed_opts->{description} || ''; $title = PublicInbox::Hval->new_oneline($title)->as_html; my @messages; my $git = PublicInbox::GitCatFile->new($args->{git_dir}); my $last = each_recent_blob($args, sub { my $mime = do_cat_mail($git, $_[0]) or return 0; $mime->body_set(''); # save some memory my $t = eval { str2time($mime->header('Date')) }; defined($t) or $t = 0; $mime->header_set('X-PI-Date', $t); push @messages, $mime; 1; }); $git = undef; # destroy pipes. my $th = PublicInbox::Thread->new(@messages); $th->thread; my $html = "$title" . '' . '
';

	# sort by date, most recent at top
	$th->order(sub {
		sort {
			$b->topmost->message->header('X-PI-Date') <=>
			$a->topmost->message->header('X-PI-Date')
		} @_;
	});
	dump_html_line($_, 0, \$html) for $th->rootset;

	Email::Address->purge_cache;

	my $footer = nav_footer($args->{cgi}, $last);
	$footer = "
$footer
" if $footer;
	$html . "
$footer"; } # private subs sub nav_footer { my ($cgi, $last) = @_; $cgi or return ''; my $old_r = $cgi->param('r'); my $head = ' '; my $next = ' '; if ($last) { $next = qq!next!; } if ($old_r) { $head = $cgi->path_info; $head = qq!head!; } "$next $head"; } sub each_recent_blob { my ($args, $cb) = @_; my $max = $args->{max} || MAX_PER_PAGE; my $hex = '[a-f0-9]'; my $addmsg = qr!^:000000 100644 \S+ \S+ A\t(${hex}{2}/${hex}{38})$!; my $delmsg = qr!^:100644 000000 \S+ \S+ D\t(${hex}{2}/${hex}{38})$!; my $refhex = qr/${hex}{4,40}(?:~\d+)?/; my $cgi = $args->{cgi}; # revision ranges may be specified my $range = 'HEAD'; my $r = $cgi->param('r') if $cgi; if ($r && ($r =~ /\A(?:$refhex\.\.)?$refhex\z/o)) { $range = $r; } # get recent messages # we could use git log -z, but, we already know ssoma will not # leave us with filenames with spaces in them.. my @cmd = ('git', "--git-dir=$args->{git_dir}", qw/log --no-notes --no-color --raw -r/); push @cmd, $range; my $pid = open(my $log, '-|', @cmd) or die('open `'.join(' ', @cmd) . " pipe failed: $!\n"); my %deleted; # only an optimization at this point my $last; my $nr = 0; my @commits = (); while (my $line = <$log>) { if ($line =~ /$addmsg/o) { my $add = $1; next if $deleted{$add}; $nr += $cb->($add); if ($nr >= $max) { $last = 1; last; } } elsif ($line =~ /$delmsg/o) { $deleted{$1} = 1; } elsif ($line =~ /^commit (${hex}{40})/) { push @commits, $1; } } if ($last) { while (my $line = <$log>) { if ($line =~ /^commit (${hex}{40})/) { push @commits, $1; last; } } } else { push @commits, undef; } close $log; # we may EPIPE here # for pagination $commits[-1]; } # private functions below sub get_feedopts { my ($args) = @_; my $pi_config = $args->{pi_config}; my $listname = $args->{listname}; my $cgi = $args->{cgi}; my %rv; if (open my $fh, '<', "$args->{git_dir}/description") { chomp($rv{description} = <$fh>); close $fh; } if ($pi_config && defined $listname && length $listname) { foreach my $key (qw(address)) { $rv{$key} = $pi_config->get($listname, $key) || ""; } } my $url_base; if ($cgi) { my $path_info = $cgi->path_info; my $base; if (ref($cgi) eq 'CGI') { $base = $cgi->url(-base); } else { $base = $cgi->base->as_string; $base =~ s!/\z!!; } $url_base = $path_info; if ($url_base =~ s!/(?:|index\.html)?\z!!) { $rv{atomurl} = "$base$url_base/atom.xml"; } else { $url_base =~ s!/atom\.xml\z!!; $rv{atomurl} = $base . $path_info; $url_base = $base . $url_base; # XXX is this needed? } } else { $url_base = "http://example.com"; $rv{atomurl} = "$url_base/atom.xml"; } $rv{url} ||= "$url_base/"; $rv{midurl} = "$url_base/m/"; $rv{fullurl} = "$url_base/f/"; \%rv; } sub mime_header { my ($mime, $name) = @_; PublicInbox::Hval->new_oneline($mime->header($name))->raw; } sub feed_date { my ($date) = @_; my @t = eval { strptime($date) }; scalar(@t) ? POSIX::strftime(DATEFMT, @t) : 0; } # returns 0 (skipped) or 1 (added) sub add_to_feed { my ($feed_opts, $feed, $add, $git) = @_; my $mime = do_cat_mail($git, $add) or return 0; my $midurl = $feed_opts->{midurl} || 'http://example.com/m/'; my $fullurl = $feed_opts->{fullurl} || 'http://example.com/f/'; my $mid = $mime->header_obj->header_raw('Message-ID'); defined $mid or return 0; $mid = PublicInbox::Hval->new_msgid($mid); my $href = $mid->as_href . '.html'; my $content = PublicInbox::View->feed_entry($mime, $fullurl . $href); defined($content) or return 0; my $subject = mime_header($mime, 'Subject') or return 0; my $from = mime_header($mime, 'From') or return 0; my @from = Email::Address->parse($from); my $name = $from[0]->name; defined $name or $name = ""; my $email = $from[0]->address; defined $email or $email = ""; my $date = $mime->header('Date'); $date = PublicInbox::Hval->new_oneline($date); $date = feed_date($date->raw) or return 0; $add =~ tr!/!!d; my $h = '[a-f0-9]'; my (@uuid5) = ($add =~ m!\A($h{8})($h{4})($h{4})($h{4})($h{12})!o); $feed->add_entry( author => { name => $name, email => $email }, title => $subject, updated => $date, content => { type => 'xhtml', content => $content }, link => $midurl . $href, id => 'urn:uuid:' . join('-', @uuid5), ); 1; } sub dump_html_line { my ($self, $level, $html) = @_; if ($self->message) { $$html .= (' ' x $level); my $mime = $self->message; my $subj = $mime->header('Subject'); my $mid = $mime->header_obj->header_raw('Message-ID'); $mid = PublicInbox::Hval->new_msgid($mid); my $href = 'm/' . $mid->as_href . '.html'; my $from = mime_header($mime, 'From'); my @from = Email::Address->parse($from); $from = $from[0]->name; (defined($from) && length($from)) or $from = $from[0]->address; $from = PublicInbox::Hval->new_oneline($from)->as_html; $subj = PublicInbox::Hval->new_oneline($subj)->as_html; $$html .= "$subj $from\n"; } dump_html_line($self->child, $level+1, $html) if $self->child; dump_html_line($self->next, $level, $html) if $self->next; } sub do_cat_mail { my ($git, $path) = @_; my $str = $git->cat_file("HEAD:$path"); Email::MIME->new($str); } 1;