X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FWwwAttach.pm;h=0b2cda900ea00be6c181c288f3a5379f82588d87;hb=0821af5f21fdb083020ae2e3e79e4227ef59cd4f;hp=cda1c6c8db3a0745e8ad28a1cffaad05e10de6cf;hpb=40f250660b42caa69f5533da5501f8d3f31f30ac;p=public-inbox.git

diff --git a/lib/PublicInbox/WwwAttach.pm b/lib/PublicInbox/WwwAttach.pm
index cda1c6c8..0b2cda90 100644
--- a/lib/PublicInbox/WwwAttach.pm
+++ b/lib/PublicInbox/WwwAttach.pm
@@ -1,48 +1,85 @@
-# Copyright (C) 2016-2019 all contributors <meta@public-inbox.org>
+# Copyright (C) 2016-2020 all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # For retrieving attachments from messages in the WWW interface
 package PublicInbox::WwwAttach; # internal package
 use strict;
-use warnings;
+use parent qw(PublicInbox::GzipFilter);
 use bytes (); # only for bytes::length
-use Email::MIME::ContentType qw(parse_content_type);
-use PublicInbox::MIME;
-use PublicInbox::MsgIter;
-
-sub get_attach_i { # msg_iter callback
-	my ($part, $depth, @idx) = @{$_[0]};
-	my $res = $_[1];
-	return if join('.', @idx) ne $res->[3]; # $idx
+use PublicInbox::EmlContentFoo qw(parse_content_type);
+use PublicInbox::Eml;
+
+sub get_attach_i { # ->each_part callback
+	my ($part, $depth, $idx) = @{$_[0]};
+	my $ctx = $_[1];
+	return if $idx ne $ctx->{idx}; # [0-9]+(?:\.[0-9]+)+
+	my $res = $ctx->{res};
 	$res->[0] = 200;
 	my $ct = $part->content_type;
 	$ct = parse_content_type($ct) if $ct;
 
-	# discrete == type, we remain Debian wheezy-compatible
-	if ($ct && (($ct->{discrete} || '') eq 'text')) {
+	if ($ct && (($ct->{type} || '') eq 'text')) {
 		# display all text as text/plain:
 		my $cset = $ct->{attributes}->{charset};
 		if ($cset && ($cset =~ /\A[a-zA-Z0-9_\-]+\z/)) {
 			$res->[1]->[1] .= qq(; charset=$cset);
 		}
+		$ctx->{gz} = PublicInbox::GzipFilter::gz_or_noop($res->[1],
+								$ctx->{env});
+		$part = $ctx->zflush($part->body);
 	} else { # TODO: allow user to configure safe types
 		$res->[1]->[1] = 'application/octet-stream';
+		$part = $part->body;
 	}
-	$part = $part->body;
 	push @{$res->[1]}, 'Content-Length', bytes::length($part);
 	$res->[2]->[0] = $part;
 }
 
+sub async_eml { # for async_blob_cb
+	my ($ctx, $eml) = @_;
+	eval { $eml->each_part(\&get_attach_i, $ctx, 1) };
+	if ($@) {
+		$ctx->{res}->[0] = 500;
+		warn "E: $@";
+	}
+}
+
+sub async_next {
+	my ($http) = @_;
+	my $ctx = $http->{forward} or return; # client aborted
+	# finally, we call the user-supplied callback
+	eval { $ctx->{wcb}->($ctx->{res}) };
+	warn "E: $@" if $@;
+}
+
+sub scan_attach ($) { # public-inbox-httpd only
+	my ($ctx) = @_;
+	$ctx->{env}->{'psgix.io'}->{forward} = $ctx;
+	$ctx->smsg_blob($ctx->{smsg});
+}
+
 # /$LISTNAME/$MESSAGE_ID/$IDX-$FILENAME
 sub get_attach ($$$) {
 	my ($ctx, $idx, $fn) = @_;
-	my $res = [ 404, [ 'Content-Type', 'text/plain' ], [ "Not found\n" ] ];
-	my $mime = $ctx->{-inbox}->msg_by_mid($ctx->{mid}) or return $res;
-	$mime = PublicInbox::MIME->new($mime);
-	$res->[3] = $idx;
-	msg_iter($mime, \&get_attach_i, $res);
-	pop @$res; # cleanup before letting PSGI server see it
-	$res
+	$ctx->{res} = [ 404, [ 'Content-Type' => 'text/plain' ],
+				[ "Not found\n" ] ];
+	$ctx->{idx} = $idx;
+	bless $ctx, __PACKAGE__;
+	my $eml;
+	if ($ctx->{smsg} = $ctx->{-inbox}->smsg_by_mid($ctx->{mid})) {
+		return sub { # public-inbox-httpd-only
+			$ctx->{wcb} = $_[0];
+			scan_attach($ctx);
+		} if $ctx->{env}->{'pi-httpd.async'};
+		# generic PSGI:
+		$eml = $ctx->{-inbox}->smsg_eml($ctx->{smsg});
+	} elsif (!$ctx->{-inbox}->over) {
+		if (my $bref = $ctx->{-inbox}->msg_by_mid($ctx->{mid})) {
+			$eml = PublicInbox::Eml->new($bref);
+		}
+	}
+	$eml->each_part(\&get_attach_i, $ctx, 1) if $eml;
+	$ctx->{res}
 }
 
 1;