X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FFeed.pm;h=cbdf5db99f8b8486e8a14caff84259c63e560fd9;hb=68f9da93b11412122fff6e6154a42ecabcdbada0;hp=75fecf5b432cad06409b1a8efabfe9ece47db68f;hpb=4c1a95b7860f16975aa055e2c11481e791b513d5;p=public-inbox.git

diff --git a/lib/PublicInbox/Feed.pm b/lib/PublicInbox/Feed.pm
index 75fecf5b..cbdf5db9 100644
--- a/lib/PublicInbox/Feed.pm
+++ b/lib/PublicInbox/Feed.pm
@@ -1,204 +1,98 @@
-# Copyright (C) 2013-2015, all contributors <meta@public-inbox.org>
-# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+# Copyright (C) 2013-2020 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+#
+# Used for generating Atom feeds for web-accessible mailing list archives.
 package PublicInbox::Feed;
 use strict;
 use warnings;
-use Email::Address;
-use Email::MIME;
-use Date::Parse qw(strptime);
-use PublicInbox::Hval;
-use PublicInbox::GitCatFile;
 use PublicInbox::View;
-use PublicInbox::MID qw/mid_clean mid2path/;
-use POSIX qw/strftime/;
-use constant {
-	DATEFMT => '%Y-%m-%dT%H:%M:%SZ', # atom standard
-	MAX_PER_PAGE => 25, # this needs to be tunable
-};
+use PublicInbox::WwwAtomStream;
+use PublicInbox::Smsg; # this loads w/o Search::Xapian
 
-use Encode qw/find_encoding/;
-my $enc_utf8 = find_encoding('UTF-8');
+sub generate_i {
+	my ($ctx) = @_;
+	shift @{$ctx->{msgs}};
+}
 
 # main function
 sub generate {
 	my ($ctx) = @_;
-	sub { emit_atom($_[0], $ctx) };
+	my $msgs = $ctx->{msgs} = recent_msgs($ctx);
+	return _no_thread() unless @$msgs;
+	PublicInbox::WwwAtomStream->response($ctx, 200, \&generate_i);
 }
 
 sub generate_thread_atom {
 	my ($ctx) = @_;
-	sub { emit_atom_thread($_[0], $ctx) };
+	my $msgs = $ctx->{msgs} = $ctx->{-inbox}->over->get_thread($ctx->{mid});
+	return _no_thread() unless @$msgs;
+	PublicInbox::WwwAtomStream->response($ctx, 200, \&generate_i);
 }
 
 sub generate_html_index {
 	my ($ctx) = @_;
-	sub { emit_html_index($_[0], $ctx) };
-}
-
-# private subs
-
-sub title_tag {
-	my ($title) = @_;
-	# try to avoid the type attribute in title:
-	$title = PublicInbox::Hval->new_oneline($title)->as_html;
-	my $type = index($title, '&') >= 0 ? "\ntype=\"html\"" : '';
-	"<title$type>$title</title>";
-}
-
-sub atom_header {
-	my ($feed_opts, $title) = @_;
-
-	$title = title_tag($feed_opts->{description}) unless (defined $title);
-
-	qq(<?xml version="1.0" encoding="us-ascii"?>\n) .
-	qq{<feed\nxmlns="http://www.w3.org/2005/Atom">} .
-	qq{$title} .
-	qq(<link\nhref="$feed_opts->{url}"/>) .
-	qq(<link\nrel="self"\nhref="$feed_opts->{atomurl}"/>) .
-	qq(<id>mailto:$feed_opts->{id_addr}</id>);
-}
+	# if the 'r' query parameter is given, it is a legacy permalink
+	# which we must continue supporting:
+	my $qp = $ctx->{qp};
+	my $ibx = $ctx->{-inbox};
+	if ($qp && !$qp->{r} && $ibx->over) {
+		return PublicInbox::View::index_topics($ctx);
+	}
 
-sub emit_atom {
-	my ($cb, $ctx) = @_;
-	my $fh = $cb->([ 200, ['Content-Type' => 'application/atom+xml']]);
-	my $max = $ctx->{max} || MAX_PER_PAGE;
-	my $feed_opts = get_feedopts($ctx);
-	my $x = atom_header($feed_opts);
-	my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
-	each_recent_blob($ctx, sub {
-		my ($path, undef, $ts) = @_;
-		if (defined $x) {
-			$fh->write($x . '<updated>' .
-				   strftime(DATEFMT, gmtime($ts)) .
-				   '</updated>');
-			$x = undef;
-		}
-		add_to_feed($feed_opts, $fh, $path, $git);
-	});
-	$git = undef; # destroy pipes
-	_end_feed($fh);
+	my $env = $ctx->{env};
+	my $url = $ibx->base_url($env) . 'new.html';
+	my $qs = $env->{QUERY_STRING};
+	$url .= "?$qs" if $qs ne '';
+	[302, [ 'Location', $url, 'Content-Type', 'text/plain'],
+		[ "Redirecting to $url\n" ] ];
 }
 
-sub _no_thread {
-	my ($cb) = @_;
-	my $fh = $cb->([404, ['Content-Type' => 'text/plain']]);
-	$fh->write("No feed found for thread\n");
-	$fh->close;
-}
+sub new_html_i {
+	my ($ctx, $eml) = @_;
+	$ctx->zmore($ctx->html_top) if exists $ctx->{-html_tip};
 
-sub _end_feed {
-	my ($fh) = @_;
-	Email::Address->purge_cache;
-	$fh->write('</feed>');
-	$fh->close;
+	$eml and return PublicInbox::View::eml_entry($ctx, $eml);
+	my $smsg = shift @{$ctx->{msgs}} or
+		$ctx->zmore(PublicInbox::View::pagination_footer(
+						$ctx, './new.html'));
+	$smsg;
 }
 
-sub emit_atom_thread {
-	my ($cb, $ctx) = @_;
-	my $res = $ctx->{srch}->get_thread($ctx->{mid});
-	return _no_thread($cb) unless $res->{total};
-	my $fh = $cb->([200, ['Content-Type' => 'application/atom+xml']]);
-	my $feed_opts = get_feedopts($ctx);
-
-	my $html_url = $feed_opts->{atomurl} = $ctx->{self_url};
-	$html_url =~ s!/t\.atom\z!/!;
-	$feed_opts->{url} = $html_url;
-	$feed_opts->{emit_header} = 1;
-
-	my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
-	foreach my $msg (@{$res->{msgs}}) {
-		add_to_feed($feed_opts, $fh, mid2path($msg->mid), $git);
+sub new_html {
+	my ($ctx) = @_;
+	my $msgs = $ctx->{msgs} = recent_msgs($ctx);
+	if (!@$msgs) {
+		return [404, ['Content-Type', 'text/plain'],
+			["No messages, yet\n"] ];
 	}
-	$git = undef; # destroy pipes
-	_end_feed($fh);
+	$ctx->{-html_tip} = '<pre>';
+	$ctx->{-upfx} = '';
+	$ctx->{-hr} = 1;
+	PublicInbox::WwwStream::aresponse($ctx, 200, \&new_html_i);
 }
 
-sub emit_html_index {
-	my ($cb, $ctx) = @_;
-	my $fh = $cb->([200,['Content-Type'=>'text/html; charset=UTF-8']]);
-
-	my $max = $ctx->{max} || MAX_PER_PAGE;
-	my $feed_opts = get_feedopts($ctx);
-
-	my $title = $feed_opts->{description} || '';
-	$title = PublicInbox::Hval->new_oneline($title)->as_html;
-	my $atom_url = $feed_opts->{atomurl};
-
-	$fh->write("<html><head><title>$title</title>" .
-		   "<link\nrel=alternate\ntitle=\"Atom feed\"\n".
-		   "href=\"$atom_url\"\ntype=\"application/atom+xml\"/>" .
-		   '</head><body>' . PublicInbox::View::PRE_WRAP .
-		   "<b>$title</b> (<a\nhref=\"$atom_url\">Atom feed</a>)\n");
-
-	my $state;
-	my $git = PublicInbox::GitCatFile->new($ctx->{git_dir});
-	my $topics;
-	my $srch = $ctx->{srch};
-	$srch and $topics = [ [], {} ];
-	my (undef, $last) = each_recent_blob($ctx, sub {
-		my ($path, $commit, $ts, $u, $subj) = @_;
-		$state ||= {
-			ctx => $ctx,
-			seen => {},
-			first_commit => $commit,
-			anchor_idx => 0,
-		};
-
-		if ($srch) {
-			add_topic($git, $srch, $topics, $path, $ts, $u, $subj);
-		} else {
-			my $mime = do_cat_mail($git, $path) or return 0;
-			PublicInbox::View::index_entry($fh, $mime, 0, $state);
-			1;
-		}
-	});
-	Email::Address->purge_cache;
-	$git = undef; # destroy pipes.
+# private subs
 
-	my $footer = nav_footer($ctx->{cgi}, $last, $feed_opts, $state);
-	if ($footer) {
-		my $list_footer = $ctx->{footer};
-		$footer .= "\n\n" . $list_footer if $list_footer;
-		$footer = "<hr /><pre>$footer</pre>";
-	}
-	$fh->write(dump_topics($topics)) if $topics;
-	$fh->write("$footer</body></html>");
-	$fh->close;
+sub _no_thread () {
+	[404, ['Content-Type', 'text/plain'], ["No feed found for thread\n"]];
 }
 
-sub nav_footer {
-	my ($cgi, $last, $feed_opts, $state) = @_;
-	$cgi or return '';
-	my $old_r = $cgi->param('r');
-	my $head = '    ';
-	my $next = '    ';
-	my $first = $state->{first_commit};
-	my $anchor = $state->{anchor_idx};
-
-	if ($last) {
-		$next = qq!<a\nhref="?r=$last">next</a>!;
-	}
-	if ($old_r) {
-		$head = $cgi->path_info;
-		$head = qq!<a\nhref="$head">head</a>!;
-	}
-	my $atom = "<a\nhref=\"$feed_opts->{atomurl}\">atom</a>";
-	my $permalink = "<a\nhref=\"?r=$first\">permalink</a>";
-	"<a\nname=\"s$anchor\">page:</a> $next $head $atom $permalink";
-}
+sub recent_msgs {
+	my ($ctx) = @_;
+	my $ibx = $ctx->{-inbox};
+	my $max = $ibx->{feedmax};
+	return PublicInbox::View::paginate_recent($ctx, $max) if $ibx->over;
 
-sub each_recent_blob {
-	my ($ctx, $cb) = @_;
-	my $max = $ctx->{max} || MAX_PER_PAGE;
+	# only for rare v1 inboxes which aren't indexed at all
+	my $qp = $ctx->{qp};
 	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 $refhex = qr/(?:HEAD|${hex}{4,40})(?:~\d+)?/;
-	my $cgi = $ctx->{cgi};
+	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 $refhex = qr/(?:HEAD|${hex}{4,40})(?:~[0-9]+)?/;
 
 	# revision ranges may be specified
 	my $range = 'HEAD';
-	my $r = $cgi->param('r') if $cgi;
+	my $r = $qp->{r} if $qp;
 	if ($r && ($r =~ /\A(?:$refhex\.\.)?$refhex\z/o)) {
 		$range = $r;
 	}
@@ -206,224 +100,44 @@ sub each_recent_blob {
 	# get recent messages
 	# we could use git log -z, but, we already know ssoma will not
 	# leave us with filenames with spaces in them..
-	my @cmd = ('git', "--git-dir=$ctx->{git_dir}",
-			qw/log --no-notes --no-color --raw -r
-			   --abbrev=16 --abbrev-commit/,
-			"--format=%h%x00%ct%x00%an%x00%s%x00");
-	push @cmd, $range;
-
-	my $pid = open(my $log, '-|', @cmd) or
-		die('open `'.join(' ', @cmd) . " pipe failed: $!\n");
+	my $log = $ibx->git->popen(qw/log
+				--no-notes --no-color --raw -r
+				--no-abbrev --abbrev-commit/,
+				"--format=%H", $range);
 	my %deleted; # only an optimization at this point
 	my $last;
-	my $nr = 0;
-	my ($cur_commit, $first_commit, $last_commit);
-	my ($ts, $subj, $u);
+	my $last_commit;
+	local $/ = "\n";
+	my @oids;
 	while (defined(my $line = <$log>)) {
 		if ($line =~ /$addmsg/o) {
 			my $add = $1;
 			next if $deleted{$add}; # optimization-only
-			$nr += $cb->($add, $cur_commit, $ts, $u, $subj);
-			if ($nr >= $max) {
+			push @oids, $add;
+			if (scalar(@oids) >= $max) {
 				$last = 1;
 				last;
 			}
 		} elsif ($line =~ /$delmsg/o) {
 			$deleted{$1} = 1;
-		} elsif ($line =~ /^${hex}{7,40}/o) {
-			($cur_commit, $ts, $u, $subj) = split("\0", $line);
-			unless (defined $first_commit) {
-				$first_commit = $cur_commit;
-			}
 		}
 	}
 
 	if ($last) {
+		local $/ = "\n";
 		while (my $line = <$log>) {
-			if ($line =~ /^(${hex}{7,40})/o) {
+			if ($line =~ /^(${hex}{7,40})/) {
 				$last_commit = $1;
 				last;
 			}
 		}
 	}
 
-	close $log; # we may EPIPE here
-	# for pagination
-	($first_commit, $last_commit);
-}
-
-# private functions below
-sub get_feedopts {
-	my ($ctx) = @_;
-	my $pi_config = $ctx->{pi_config};
-	my $listname = $ctx->{listname};
-	my $cgi = $ctx->{cgi};
-	my %rv;
-	if (open my $fh, '<', "$ctx->{git_dir}/description") {
-		chomp($rv{description} = <$fh>);
-		close $fh;
-	} else {
-		$rv{description} = '($GIT_DIR/description missing)';
-	}
+	$last_commit and
+		$ctx->{next_page} = qq[<a\nhref="?r=$last_commit"\nrel=next>] .
+					'next (older)</a>';
 
-	if ($pi_config && defined $listname && $listname ne '') {
-		my $addr = $pi_config->get($listname, 'address') || "";
-		$rv{address} = $addr;
-		$addr = $addr->[0] if ref($addr);
-		$rv{id_addr} = $addr;
-	}
-	$rv{id_addr} ||= 'public-inbox@example.com';
-
-	my $url_base;
-	if ($cgi) {
-		my $base;
-		if (ref($cgi) eq 'CGI') {
-			$base = $cgi->url(-base);
-		} else {
-			$base = $cgi->base->as_string;
-			$base =~ s!/\z!!;
-		}
-		$url_base = "$base/$listname";
-		if (my $mid = $ctx->{mid}) { # per-thread feed:
-			$rv{atomurl} = "$url_base/$mid/t.atom";
-		} else {
-			$rv{atomurl} = "$url_base/new.atom";
-		}
-	} else {
-		$url_base = "http://example.com";
-		$rv{atomurl} = "$url_base/new.atom";
-	}
-	$rv{url} ||= "$url_base/";
-	$rv{midurl} = "$url_base/";
-
-	\%rv;
-}
-
-sub mime_header {
-	my ($mime, $name) = @_;
-	PublicInbox::Hval->new_oneline($mime->header($name))->raw;
-}
-
-sub feed_date {
-	my ($date) = @_;
-	my @t = eval { strptime($date) };
-
-	scalar(@t) ? strftime(DATEFMT, @t) : 0;
-}
-
-# returns 0 (skipped) or 1 (added)
-sub add_to_feed {
-	my ($feed_opts, $fh, $add, $git) = @_;
-
-	my $mime = do_cat_mail($git, $add) or return 0;
-	my $url = $feed_opts->{url};
-	my $midurl = $feed_opts->{midurl};
-
-	my $header_obj = $mime->header_obj;
-	my $mid = $header_obj->header('Message-ID');
-	defined $mid or return 0;
-	$mid = PublicInbox::Hval->new_msgid($mid);
-	my $href = $mid->as_href;
-	my $content = PublicInbox::View->feed_entry($mime, "$midurl$href/f/");
-	defined($content) or return 0;
-	$mime = undef;
-
-	my $date = $header_obj->header('Date');
-	$date = PublicInbox::Hval->new_oneline($date);
-	$date = feed_date($date->raw) or return 0;
-	$date = "<updated>$date</updated>";
-
-	my $title = mime_header($header_obj, 'Subject') or return 0;
-	$title = title_tag($title);
-
-	my $from = mime_header($header_obj, 'From') or return 0;
-	my @from = Email::Address->parse($from) or return 0;
-	my $name = PublicInbox::Hval->new_oneline($from[0]->name)->as_html;
-	my $email = $from[0]->address;
-	$email = PublicInbox::Hval->new_oneline($email)->as_html;
-
-	if (delete $feed_opts->{emit_header}) {
-		$fh->write(atom_header($feed_opts, $title) . $date);
-	}
-	$fh->write("<entry><author><name>$name</name><email>$email</email>" .
-		   "</author>$title$date" .
-		   qq{<content\ntype="xhtml">} .
-		   qq{<div\nxmlns="http://www.w3.org/1999/xhtml">});
-	$fh->write($content);
-
-	$add =~ tr!/!!d;
-	my $h = '[a-f0-9]';
-	my (@uuid5) = ($add =~ m!\A($h{8})($h{4})($h{4})($h{4})($h{12})!o);
-	my $id = 'urn:uuid:' . join('-', @uuid5);
-	$fh->write(qq!</div></content><link\nhref="$midurl$href/"/>!.
-		   "<id>$id</id></entry>");
-	1;
-}
-
-sub do_cat_mail {
-	my ($git, $path) = @_;
-	my $mime = eval {
-		my $str = $git->cat_file("HEAD:$path");
-		Email::MIME->new($str);
-	};
-	$@ ? undef : $mime;
-}
-
-# accumulate recent topics if search is supported
-sub add_topic {
-	my ($git, $srch, $topics, $path, $ts, $u, $subj) = @_;
-	my ($order, $subjs) = @$topics;
-	my $header_obj;
-
-	# legacy ssoma did not set commit titles based on Subject
-	$subj = $enc_utf8->decode($subj);
-	if ($subj eq 'mda') {
-		my $mime = do_cat_mail($git, $path) or return 0;
-		$header_obj = $mime->header_obj;
-		$subj = mime_header($header_obj, 'Subject');
-	}
-
-	my $topic = $subj = $srch->subject_normalized($subj);
-
-	# kill "[PATCH v2]" etc. for summarization
-	$topic =~ s/\A\s*\[[^\]]+\]\s*//g;
-
-	if (++$subjs->{$topic} == 1) {
-		unless ($header_obj) {
-			my $mime = do_cat_mail($git, $path) or return 0;
-			$header_obj = $mime->header_obj;
-		}
-		my $mid = mid_clean($header_obj->header('Message-ID'));
-		$u = $enc_utf8->decode($u);
-		push @$order, [ $mid, $ts, $u, $subj, $topic ];
-		return 1;
-	}
-	0; # old topic, continue going
-}
-
-sub dump_topics {
-	my ($topics) = @_;
-	my ($order, $subjs) = @$topics;
-	my $dst = '';
-	$dst .= "\n[No recent topics]" unless (scalar @$order);
-	while (defined(my $info = shift @$order)) {
-		my ($mid, $ts, $u, $subj, $topic) = @$info;
-		my $n = delete $subjs->{$topic};
-		$mid = PublicInbox::Hval->new($mid)->as_href;
-		$subj = PublicInbox::Hval->new($subj)->as_html;
-		$u = PublicInbox::Hval->new($u)->as_html;
-		$dst .= "\n<a\nhref=\"$mid/t/#u\"><b>$subj</b></a>\n- ";
-		$ts = strftime('%Y-%m-%d %H:%M', gmtime($ts));
-		if ($n == 1) {
-			$dst .= "created by $u @ $ts UTC\n"
-		} else {
-			# $n isn't the total number of posts on the topic,
-			# just the number of posts in the current "git log"
-			# window, so leave it unlabeled
-			$dst .= "updated by $u @ $ts UTC ($n)\n"
-		}
-	}
-	$dst .= '</pre>'
+	[ map { bless {blob => $_ }, 'PublicInbox::Smsg' } @oids ];
 }
 
 1;