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Diffstat (limited to 'lib/PublicInbox/WwwAtomStream.pm')
| -rw-r--r-- | lib/PublicInbox/WwwAtomStream.pm | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/lib/PublicInbox/WwwAtomStream.pm b/lib/PublicInbox/WwwAtomStream.pm new file mode 100644 index 00000000..5720384c --- /dev/null +++ b/lib/PublicInbox/WwwAtomStream.pm @@ -0,0 +1,134 @@ +# Copyright (C) 2016 all contributors <meta@public-inbox.org> +# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt> +# +# Atom body stream for which yields getline+close methods +package PublicInbox::WwwAtomStream; +use strict; +use warnings; + +# FIXME: locale-independence: +use POSIX qw(strftime); +use Date::Parse qw(strptime); + +use PublicInbox::Address; +use PublicInbox::Hval qw(ascii_html); +use PublicInbox::MID qw/mid_clean mid2path mid_escape/; + +# called by PSGI server after getline: +sub close {} + +sub new { + my ($class, $ctx, $cb) = @_; + $ctx->{emit_header} = 1; + $ctx->{feed_base_url} = $ctx->{-inbox}->base_url($ctx->{env}); + bless { cb => $cb || *close, ctx => $ctx }, $class; +} + +sub response { + my ($class, $ctx, $code, $cb) = @_; + [ $code, [ 'Content-Type', 'application/atom+xml' ], + $class->new($ctx, $cb) ] +} + +# called once for each message by PSGI server +sub getline { + my ($self) = @_; + if (my $middle = $self->{cb}) { + my $mime = $middle->(); + return feed_entry($self, $mime) if $mime; + } + delete $self->{cb} ? '</feed>' : undef; +} + +# private + +sub title_tag { + my ($title) = @_; + $title =~ tr/\t\n / /s; # squeeze spaces + # try to avoid the type attribute in title: + $title = ascii_html($title); + my $type = index($title, '&') >= 0 ? "\ntype=\"html\"" : ''; + "<title$type>$title</title>"; +} + +sub atom_header { + my ($ctx, $title) = @_; + my $ibx = $ctx->{-inbox}; + my $base_url = $ctx->{feed_base_url}; + my $search_q = $ctx->{search_query}; + my $self_url = $base_url; + my $mid = $ctx->{mid}; + if (defined $mid) { # per-thread + $self_url .= mid_escape($mid).'/t.atom'; + } elsif (defined $search_q) { + my $query = $search_q->{'q'}; + $title = title_tag("$query - search results"); + $base_url .= '?' . $search_q->qs_html(x => undef); + $self_url .= '?' . $search_q->qs_html; + } else { + $title = title_tag($ibx->description); + $self_url .= 'new.atom'; + } + my $mtime = (stat($ibx->{mainrepo}))[9] || time; + + qq(<?xml version="1.0" encoding="us-ascii"?>\n) . + qq{<feed\nxmlns="http://www.w3.org/2005/Atom">} . + qq{$title} . + qq(<link\nrel="alternate"\ntype="text/html") . + qq(\nhref="$base_url"/>) . + qq(<link\nrel="self"\nhref="$self_url"/>) . + qq(<id>mailto:$ibx->{-primary_address}</id>) . + feed_updated(gmtime($mtime)); +} + +# returns undef or string +sub feed_entry { + my ($self, $mime) = @_; + my $ctx = $self->{ctx}; + my $hdr = $mime->header_obj; + my $mid = mid_clean($hdr->header_raw('Message-ID')); + + my $uuid = mid2path($mid); + $uuid =~ tr!/!!d; + my $h = '[a-f0-9]'; + my (@uuid5) = ($uuid =~ m!\A($h{8})($h{4})($h{4})($h{4})($h{12})!o); + $uuid = 'urn:uuid:' . join('-', @uuid5); + + $mid = PublicInbox::Hval->new_msgid($mid); + my $href = $ctx->{feed_base_url} . $mid->{href}. '/'; + + my $date = $hdr->header('Date'); + my @t = eval { strptime($date) } if defined $date; + @t = gmtime(time) unless scalar @t; + my $updated = feed_updated(@t); + + my $title = $hdr->header('Subject'); + $title = '(no subject)' unless defined $title && $title ne ''; + $title = title_tag($title); + + my $from = $hdr->header('From') or return; + my ($email) = PublicInbox::Address::emails($from); + my $name = join(', ',PublicInbox::Address::names($from)); + $name = ascii_html($name); + $email = ascii_html($email); + + my $s = ''; + if (delete $ctx->{emit_header}) { + $s .= atom_header($ctx, $title); + } + $s .= "<entry><author><name>$name</name><email>$email</email>" . + "</author>$title$updated" . + qq{<content\ntype="xhtml">} . + qq{<div\nxmlns="http://www.w3.org/1999/xhtml">} . + qq(<pre\nstyle="white-space:pre-wrap">) . + PublicInbox::View::multipart_text_as_html($mime, $href) . + '</pre>' . + qq!</div></content><link\nhref="$href"/>!. + "<id>$uuid</id></entry>"; +} + +sub feed_updated { + '<updated>' . strftime('%Y-%m-%dT%H:%M:%SZ', @_) . '</updated>'; +} + +1; |