1 # Copyright (C) 2014-2019 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # Used for displaying the HTML web interface.
5 # See Documentation/design_www.txt for this.
6 package PublicInbox::View;
9 use bytes (); # only for bytes::length
10 use PublicInbox::MsgTime qw(msg_datestamp);
11 use PublicInbox::Hval qw/ascii_html obfuscate_addrs/;
12 use PublicInbox::Linkify;
13 use PublicInbox::MID qw/id_compress mid_escape mids mids_for_index references/;
14 use PublicInbox::MsgIter;
15 use PublicInbox::Address;
16 use PublicInbox::WwwStream;
17 use PublicInbox::Reply;
18 use PublicInbox::ViewDiff qw(flush_diff);
20 use Time::Local qw(timegm);
21 use PublicInbox::SearchMsg qw(subject_normalized);
22 use constant COLS => 72;
23 use constant INDENT => ' ';
24 use constant TCHILD => '` ';
25 sub th_pfx ($) { $_[0] == 0 ? '' : TCHILD };
29 my $more = $ctx->{more};
31 # $more cannot be true w/o $smsg being defined:
32 my $upfx = $more ? '../'.mid_escape($ctx->{smsg}->mid).'/' : '';
34 multipart_text_as_html($ctx->{mime}, $upfx, $ctx) .
36 } elsif ($more && @$more) {
38 msg_html_more($ctx, $more, $nr);
39 } elsif ($nr == $ctx->{end_nr}) {
40 # fake an EOF if generating the footer fails;
41 # we want to at least show the message if something
44 my $hdr = delete($ctx->{mime})->header_obj;
45 '<pre>' . html_footer($hdr, 1, $ctx) .
46 '</pre>' . msg_reply($ctx, $hdr)
53 # public functions: (unstable)
56 my ($ctx, $mime, $more, $smsg) = @_;
57 my $ibx = $ctx->{-inbox};
58 $ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
59 $ctx->{tip} = _msg_html_prepare($mime->header_obj, $ctx, $more, 0);
64 PublicInbox::WwwStream->response($ctx, 200, \&msg_html_i);
69 my $mid = $ctx->{mid};
70 my $ibx = $ctx->{-inbox};
73 if (my $over = $ibx->over) {
75 $smsg = $over->next_by_mid($mid, \$id, \$prev);
76 $first = $ibx->msg_by_smsg($smsg) if $smsg;
78 my $next = $over->next_by_mid($mid, \$id, \$prev);
79 $more = [ $id, $prev, $next ] if $next;
83 $first = $ibx->msg_by_mid($mid) or return;
85 msg_html($ctx, PublicInbox::MIME->new($first), $more, $smsg);
89 my ($ctx, $more, $nr) = @_;
91 my ($id, $prev, $smsg) = @$more;
92 my $mid = $ctx->{mid};
93 my $ibx = $ctx->{-inbox};
94 $smsg = $ibx->smsg_mime($smsg);
95 my $next = $ibx->over->next_by_mid($mid, \$id, \$prev);
96 @$more = $next ? ($id, $prev, $next) : ();
98 my $mime = $smsg->{mime};
99 my $upfx = '../' . mid_escape($smsg->mid) . '/';
100 _msg_html_prepare($mime->header_obj, $ctx, $more, $nr) .
101 multipart_text_as_html($mime, $upfx, $ctx) .
108 warn "Error lookup up additional messages: $@\n";
109 $str = '<pre>Error looking up additional messages</pre>';
114 # /$INBOX/$MESSAGE_ID/#R
116 my ($ctx, $hdr) = @_;
118 'https://kernel.org/pub/software/scm/git/docs/git-send-email.html';
120 'https://en.wikipedia.org/wiki/Posting_style#Interleaved_style';
123 my $ibx = $ctx->{-inbox};
124 if (my $url = $ibx->{infourl}) {
125 $url = PublicInbox::Hval::prurl($ctx->{env}, $url);
126 $info = qq(\n List information: <a\nhref="$url">$url</a>\n);
129 my ($arg, $link, $reply_to_all) =
130 PublicInbox::Reply::mailto_arg_link($ibx, $hdr);
131 if (ref($arg) eq 'SCALAR') {
132 return '<pre id=R>'.ascii_html($$arg).'</pre>';
135 # mailto: link only works if address obfuscation is disabled
139 * If your mail client supports setting the <b>In-Reply-To</b> header
140 via mailto: links, try the <a
141 href="$link">mailto: link</a>
145 push @$arg, '/path/to/YOUR_REPLY';
146 $arg = ascii_html(join(" \\\n ", '', @$arg));
149 id=R><b>Reply instructions:</b>
151 You may reply publically to <a
152 href=#t>this message</a> via plain-text email
153 using any one of the following methods:
155 * Save the following mbox file, import it into your mail client,
156 and $reply_to_all from there: <a
159 Avoid top-posting and favor interleaved quoting:
161 href="$p_url">$p_url</a>
163 * Reply using the <b>--to</b>, <b>--cc</b>, and <b>--in-reply-to</b>
164 switches of git-send-email(1):
169 href="$se_url">$se_url</a>
176 my $refs = references($hdr);
180 sub fold_addresses ($) {
181 return $_[0] if length($_[0]) <= COLS;
182 # try to fold on commas after non-word chars before $lim chars,
183 # Try to get the "," preceeded by ">" or ")", but avoid folding
184 # on the comma where somebody uses "Lastname, Firstname".
185 # We also try to keep the last and penultimate addresses in
186 # the list on the same line if possible, hence the extra \z
187 # Fall back to folding on spaces at $lim + 1 chars
188 my $lim = COLS - 8; # 8 = "\t" display width
189 my $too_long = $lim + 1;
190 $_[0] =~ s/\s*\z//s; # Email::Simple doesn't strip trailing spaces
192 ($_[0] =~ /(.{0,$lim}\W(?:,|\z)|
195 .{$too_long,}?)(?:\s|\z)/xgo));
198 sub _hdr_names_html ($$) {
199 my ($hdr, $field) = @_;
200 my @vals = $hdr->header($field) or return '';
201 ascii_html(join(', ', PublicInbox::Address::names(join(',', @vals))));
205 my ($nr, $singular, $plural) = @_;
206 return "0 $plural" if $nr == 0;
207 $nr == 1 ? "$nr $singular" : "$nr $plural";
210 # this is already inside a <pre>
212 my ($smsg, $ctx, $more) = @_;
213 my $subj = $smsg->subject;
214 my $mid_raw = $smsg->mid;
215 my $id = id_compress($mid_raw, 1);
218 my $root_anchor = $ctx->{root_anchor} || '';
220 my $obfs_ibx = $ctx->{-obfs_ibx};
222 $subj = '(no subject)' if $subj eq '';
223 my $rv = "<a\nhref=#e$id\nid=m$id>*</a> ";
224 $subj = '<b>'.ascii_html($subj).'</b>';
225 obfuscate_addrs($obfs_ibx, $subj) if $obfs_ibx;
226 $subj = "<u\nid=u>$subj</u>" if $root_anchor eq $id_m;
228 $rv .= _th_index_lite($mid_raw, \$irt, $id, $ctx);
230 my $ds = $smsg->ds; # for v1 non-Xapian/SQLite users
231 # deleting {mime} is critical to memory use,
232 # the rest of the fields saves about 400K as we iterate across 1K msgs
233 my ($mime) = delete @$smsg{qw(mime ds ts blob subject)};
235 my $hdr = $mime->header_obj;
236 my $from = _hdr_names_html($hdr, 'From');
237 obfuscate_addrs($obfs_ibx, $from) if $obfs_ibx;
238 $rv .= "From: $from @ ".fmt_ts($ds)." UTC";
239 my $upfx = $ctx->{-upfx};
240 my $mhref = $upfx . mid_escape($mid_raw) . '/';
241 $rv .= qq{ (<a\nhref="$mhref">permalink</a> / };
242 $rv .= qq{<a\nhref="${mhref}raw">raw</a>)\n};
243 my $to = fold_addresses(_hdr_names_html($hdr, 'To'));
244 my $cc = fold_addresses(_hdr_names_html($hdr, 'Cc'));
245 my ($tlen, $clen) = (length($to), length($cc));
247 if (($tlen + $clen) > COLS) {
248 $to_cc .= ' To: '.$to."\n" if $tlen;
249 $to_cc .= ' Cc: '.$cc."\n" if $clen;
252 $to_cc .= ' To: '.$to;
253 $to_cc .= '; <b>+Cc:</b> '.$cc if $clen;
255 $to_cc .= ' Cc: '.$cc if $clen;
259 obfuscate_addrs($obfs_ibx, $to_cc) if $obfs_ibx;
262 my $mapping = $ctx->{mapping};
263 if (!$mapping && (defined($irt) || defined($irt = in_reply_to($hdr)))) {
264 my $mirt = PublicInbox::Hval->new_msgid($irt);
265 my $href = $upfx . $mirt->{href}. '/';
266 my $html = $mirt->as_html;
267 $rv .= qq(In-Reply-To: <<a\nhref="$href">$html</a>>\n)
271 # scan through all parts, looking for displayable text
272 my $ibx = $ctx->{-inbox};
273 msg_iter($mime, sub { $rv .= add_text_body($mhref, $ctx, $_[0]) });
276 $rv .= "\n<a\nhref=#$id_m\nid=e$id>^</a> ".
277 "<a\nhref=\"$mhref\">permalink</a>" .
278 " <a\nhref=\"${mhref}raw\">raw</a>" .
279 " <a\nhref=\"${mhref}#R\">reply</a>";
282 if (defined(my $pct = $smsg->{pct})) { # used by SearchView.pm
283 $rv .= "\t[relevance $pct%]";
286 my $nested = 'nested';
291 $flat = "<b>$flat</b>";
293 $nested = "<b>$nested</b>";
295 $rv .= "\t[<a\nhref=\"${mhref}T/#u\">$flat</a>";
296 $rv .= "|<a\nhref=\"${mhref}t/#u\">$nested</a>]";
297 $rv .= " <a\nhref=#r$id>$ctx->{s_nr}</a>";
302 $rv .= $more ? '</pre><hr><pre>' : '</pre>' if $hr;
306 sub pad_link ($$;$) {
307 my ($mid, $level, $s) = @_;
309 my $id = id_compress($mid, 1);
310 (' 'x19).indent_for($level).th_pfx($level)."<a\nhref=#r$id>($s)</a>\n";
314 my ($mid_raw, $irt, $id, $ctx) = @_;
316 my $mapping = $ctx->{mapping} or return $rv;
318 my $mid_map = $mapping->{$mid_raw};
320 return 'public-inbox BUG: '.ascii_html($mid_raw).' not mapped';
321 my ($attr, $node, $idx, $level) = @$mid_map;
322 my $children = $node->{children};
323 my $nr_c = scalar @$children;
326 if (my $smsg = $node->{smsg}) {
327 # delete saves about 200KB on a 1K message thread
328 if (my $refs = delete $smsg->{references}) {
329 ($$irt) = ($refs =~ m/<([^>]+)>\z/);
332 my $irt_map = $mapping->{$$irt} if defined $$irt;
333 if (defined $irt_map) {
334 $siblings = $irt_map->[1]->{children};
335 $nr_s = scalar(@$siblings) - 1;
336 $rv .= $pad . $irt_map->[0];
338 my $prev = $siblings->[$idx - 1];
339 my $pmid = $prev->{id};
341 my $s = ($idx - 1). ' preceding siblings ...';
342 $rv .= pad_link($pmid, $level, $s);
343 } elsif ($idx == 2) {
344 my $ppmid = $siblings->[0]->{id};
345 $rv .= $pad . $mapping->{$ppmid}->[0];
347 $rv .= $pad . $mapping->{$pmid}->[0];
350 my $s_s = nr_to_s($nr_s, 'sibling', 'siblings');
351 my $s_c = nr_to_s($nr_c, 'reply', 'replies');
352 $attr =~ s!\n\z!</b>\n!s;
353 $attr =~ s!<a\nhref.*</a> !!s; # no point in duplicating subject
354 $attr =~ s!<a\nhref=[^>]+>([^<]+)</a>!$1!s; # no point linking to self
357 my $cmid = $children->[0]->{id};
358 $rv .= $pad . $mapping->{$cmid}->[0];
360 my $s = ($nr_c - 1). ' more replies';
361 $rv .= pad_link($cmid, $level + 1, $s);
362 } elsif (my $cn = $children->[1]) {
363 $rv .= $pad . $mapping->{$cn->{id}}->[0];
367 my $next = $siblings->[$idx+1] if $siblings && $idx >= 0;
369 my $nmid = $next->{id};
370 $rv .= $pad . $mapping->{$nmid}->[0];
371 my $nnext = $nr_s - $idx;
373 my $s = ($nnext - 1).' subsequent siblings';
374 $rv .= pad_link($nmid, $level, $s);
375 } elsif (my $nn = $siblings->[$idx + 2]) {
376 $rv .= $pad . $mapping->{$nn->{id}}->[0];
379 $rv .= $pad ."<a\nhref=#r$id>$s_s, $s_c; $ctx->{s_nr}</a>\n";
383 my ($rootset, $ctx, $cb) = @_;
384 my @q = map { (0, $_, -1) } @$rootset;
386 my ($level, $node, $i) = splice(@q, 0, 3);
387 defined $node or next;
388 $cb->($ctx, $level, $node, $i) or return;
391 unshift @q, map { ($level, $_, $i++) } @{$node->{children}};
396 my ($ctx, $level, $node, $idx) = @_;
397 $ctx->{mapping}->{$node->{id}} = [ '', $node, $idx, $level ];
398 skel_dump($ctx, $level, $node);
401 sub thread_index_entry {
402 my ($ctx, $level, $smsg) = @_;
403 my ($beg, $end) = thread_adj_level($ctx, $level);
404 $beg . '<pre>' . index_entry($smsg, $ctx, 0) . '</pre>' . $end;
407 sub stream_thread_i { # PublicInbox::WwwStream::getline callback
409 return unless exists($ctx->{dst});
410 my $q = $ctx->{-queue};
412 my $level = shift @$q;
413 my $node = shift @$q or next;
415 unshift @$q, map { ($cl, $_) } @{$node->{children}};
416 if (my $smsg = $ctx->{-inbox}->smsg_mime($node->{smsg})) {
417 return thread_index_entry($ctx, $level, $smsg);
419 return ghost_index_entry($ctx, $level, $node);
422 join('', thread_adj_level($ctx, 0)) . ${delete $ctx->{dst}}; # skel
425 sub stream_thread ($$) {
426 my ($rootset, $ctx) = @_;
427 my $ibx = $ctx->{-inbox};
428 my @q = map { (0, $_) } @$rootset;
432 my $node = shift @q or next;
434 unshift @q, map { ($cl, $_) } @{$node->{children}};
435 $smsg = $ibx->smsg_mime($node->{smsg}) and last;
437 return missing_thread($ctx) unless $smsg;
439 $ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
440 $ctx->{-title_html} = ascii_html($smsg->subject);
441 $ctx->{-html_tip} = thread_index_entry($ctx, $level, $smsg);
442 $ctx->{-queue} = \@q;
443 PublicInbox::WwwStream->response($ctx, 200, \&stream_thread_i);
448 my $mid = $ctx->{mid};
449 my $ibx = $ctx->{-inbox};
450 my ($nr, $msgs) = $ibx->over->get_thread($mid);
451 return missing_thread($ctx) if $nr == 0;
452 my $skel = '<hr><pre>';
453 $skel .= $nr == 1 ? 'only message in thread' : 'end of thread';
454 $skel .= ", back to <a\nhref=\"../../\">index</a>\n\n";
455 $skel .= "<b\nid=t>Thread overview:</b> ";
456 $skel .= $nr == 1 ? '(only message)' : "$nr+ messages";
457 $skel .= " (download: <a\nhref=\"../t.mbox.gz\">mbox.gz</a>";
458 $skel .= " / follow: <a\nhref=\"../t.atom\">Atom feed</a>)\n";
459 $skel .= "-- links below jump to the message on this page --\n";
460 $ctx->{-upfx} = '../../';
461 $ctx->{cur_level} = 0;
462 $ctx->{dst} = \$skel;
463 $ctx->{prev_attr} = '';
464 $ctx->{prev_level} = 0;
465 $ctx->{root_anchor} = anchor_for($mid);
466 $ctx->{mapping} = {};
467 $ctx->{s_nr} = ($nr > 1 ? "$nr+ messages" : 'only message')
470 my $rootset = thread_results($ctx, $msgs);
472 # reduce hash lookups in pre_thread->skel_dump
473 $ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
474 walk_thread($rootset, $ctx, *pre_thread);
477 return stream_thread($rootset, $ctx) unless $ctx->{flat};
479 # flat display: lazy load the full message from smsg
481 while (my $m = shift @$msgs) {
482 $smsg = $ibx->smsg_mime($m) and last;
484 return missing_thread($ctx) unless $smsg;
485 $ctx->{-title_html} = ascii_html($smsg->subject);
486 $ctx->{-html_tip} = '<pre>'.index_entry($smsg, $ctx, scalar @$msgs);
487 $ctx->{msgs} = $msgs;
488 PublicInbox::WwwStream->response($ctx, 200, \&thread_html_i);
491 sub thread_html_i { # PublicInbox::WwwStream::getline callback
493 my $msgs = $ctx->{msgs} or return;
494 while (my $smsg = shift @$msgs) {
495 $ctx->{-inbox}->smsg_mime($smsg) or next;
496 return index_entry($smsg, $ctx, scalar @$msgs);
498 my ($skel) = delete @$ctx{qw(dst msgs)};
502 sub multipart_text_as_html {
503 my ($mime, $upfx, $ctx) = @_;
506 # scan through all parts, looking for displayable text
507 msg_iter($mime, sub { $rv .= add_text_body($upfx, $ctx, $_[0]) });
512 my ($s, $l, $quot) = @_;
514 # show everything in the full version with anchor from
515 # short version (see above)
516 my $rv = $l->linkify_1($$quot);
518 # we use a <span> here to allow users to specify their own
519 # color for quoted text
520 $rv = $l->linkify_2(ascii_html($rv));
522 $$s .= qq(<span\nclass="q">) . $rv . '</span>'
525 sub attach_link ($$$$;$) {
526 my ($upfx, $ct, $p, $fn, $err) = @_;
527 my ($part, $depth, @idx) = @$p;
528 my $nl = $idx[-1] > 1 ? "\n" : '';
529 my $idx = join('.', @idx);
530 my $size = bytes::length($part->body);
532 # hide attributes normally, unless we want to aid users in
533 # spotting MUA problems:
534 $ct =~ s/;.*// unless $err;
535 $ct = ascii_html($ct);
536 my $desc = $part->header('Content-Description');
537 $desc = $fn unless defined $desc;
538 $desc = '' unless defined $desc;
540 if (defined $fn && $fn =~ /\A$PublicInbox::Hval::FN\z/o) {
542 } elsif ($ct eq 'text/plain') {
547 my $ret = qq($nl<a\nhref="$upfx$idx-$sfn">);
550 "[-- Warning: decoded text below may be mangled --]\n";
552 $ret .= "[-- Attachment #$idx: ";
553 my $ts = "Type: $ct, Size: $size bytes";
554 $desc = ascii_html($desc);
555 $ret .= ($desc eq '') ? "$ts --]" : "$desc --]\n[-- $ts --]";
560 my ($upfx, $ctx, $p) = @_;
561 my $ibx = $ctx->{-inbox};
562 my $obfs_ibx = $ibx->{obfuscate} ? $ibx : undef;
563 # $p - from msg_iter: [ Email::MIME, depth, @idx ]
564 my ($part, $depth, @idx) = @$p;
565 my $ct = $part->content_type || 'text/plain';
566 my $fn = $part->filename;
567 my ($s, $err) = msg_part_text($part, $ct);
569 return attach_link($upfx, $ct, $p, $fn) unless defined $s;
571 # makes no difference to browsers, and don't screw up filename
572 # link generation in diffs with the extra '%0D'
575 # always support diff-highlighting, but we can't linkify hunk
576 # headers for solver unless some coderepo are configured:
578 if ($s =~ /^(?:diff|---|\+{3}) /ms) {
579 # diffstat anchors do not link across attachments or messages:
580 $idx[0] = $upfx . $idx[0] if $upfx ne '';
581 $ctx->{-apfx} = join('/', @idx);
582 $ctx->{-anchors} = {}; # attr => filename
583 $ctx->{-diff} = $diff = [];
584 delete $ctx->{-long_path};
586 if ($ibx->{-repo_objs}) {
587 if (index($upfx, '//') >= 0) { # absolute URL (Atom feeds)
589 $spfx =~ s!/([^/]*)/\z!/!;
591 my $n_slash = $upfx =~ tr!/!/!;
594 } elsif ($n_slash == 1) {
596 } else { # nslash == 2
601 $ctx->{-spfx} = $spfx;
604 # some editors don't put trailing newlines at the end:
605 $s .= "\n" unless $s =~ /\n\z/s;
607 # split off quoted and unquoted blocks:
608 my @sections = split(/((?:^>[^\n]*\n)+)/sm, $s);
610 if (defined($fn) || $depth > 0 || $err) {
611 # badly-encoded message with $err? tell the world about it!
612 $s .= attach_link($upfx, $ct, $p, $fn, $err);
615 my $l = PublicInbox::Linkify->new;
616 foreach my $cur (@sections) {
618 flush_quote(\$s, $l, \$cur);
620 @$diff = split(/^/m, $cur);
622 flush_diff(\$s, $ctx, $l);
626 $s .= $l->linkify_2(ascii_html($cur));
631 obfuscate_addrs($obfs_ibx, $s) if $obfs_ibx;
635 sub _msg_html_prepare {
636 my ($hdr, $ctx, $more, $nr) = @_;
638 my $over = $ctx->{-inbox}->over;
639 my $obfs_ibx = $ctx->{-obfs_ibx};
641 my $mids = mids_for_index($hdr);
645 "<pre>WARNING: multiple messages have this Message-ID\n</pre>";
647 $rv .= "<pre\nid=b>"; # anchor for body start
652 $ctx->{-upfx} = '../';
654 my @title; # (Subject[0], From[0])
655 for my $v ($hdr->header('From')) {
656 $v = PublicInbox::Hval->new($v);
657 my @n = PublicInbox::Address::names($v->raw);
658 $title[1] //= ascii_html(join(', ', @n));
661 obfuscate_addrs($obfs_ibx, $v);
662 obfuscate_addrs($obfs_ibx, $title[1]);
664 $rv .= "From: $v\n" if $v ne '';
666 foreach my $h (qw(To Cc)) {
667 for my $v ($hdr->header($h)) {
670 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx;
671 $rv .= "$h: $v\n" if $v ne '';
674 my @subj = $hdr->header('Subject');
678 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx;
681 $rv .= qq(<a\nhref="#r"\nid=t>$v</a>\n);
687 } else { # dummy anchor for thread skeleton at bottom of page
688 $rv .= qq(<a\nhref="#r"\nid=t></a>) if $over;
689 $title[0] = '(no subject)';
691 for my $v ($hdr->header('Date')) {
693 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx; # possible :P
696 $ctx->{-title_html} = join(' - ', @title);
697 if (scalar(@$mids) == 1) { # common case
698 my $mid = PublicInbox::Hval->new_msgid($mids->[0]);
699 my $mhtml = $mid->as_html;
700 $rv .= "Message-ID: <$mhtml> ";
701 $rv .= "(<a\nhref=\"raw\">raw</a>)\n";
703 # X-Alt-Message-ID can happen if a message is injected from
704 # public-inbox-nntpd because of multiple Message-ID headers.
705 my $lnk = PublicInbox::Linkify->new;
707 for my $h (qw(Message-ID X-Alt-Message-ID)) {
708 $s .= "$h: $_\n" for ($hdr->header_raw($h));
710 $lnk->linkify_mids('..', \$s, 1);
713 $rv .= _parent_headers($hdr, $over);
718 my ($dst, $ctx, $hdr, $tpfx) = @_;
719 my $mid = mids($hdr)->[0];
720 my $ibx = $ctx->{-inbox};
721 my ($nr, $msgs) = $ibx->over->get_thread($mid);
722 my $expand = qq(expand[<a\nhref="${tpfx}T/#u">flat</a>) .
723 qq(|<a\nhref="${tpfx}t/#u">nested</a>] ) .
724 qq(<a\nhref="${tpfx}t.mbox.gz">mbox.gz</a> ) .
725 qq(<a\nhref="${tpfx}t.atom">Atom feed</a>);
727 my $parent = in_reply_to($hdr);
728 $$dst .= "\n<b>Thread overview: </b>";
730 if (defined $parent) {
731 $$dst .= "$expand\n ";
732 $$dst .= ghost_parent("$tpfx../", $parent) . "\n";
734 $$dst .= "[no followups] $expand\n";
736 $ctx->{next_msg} = undef;
737 $ctx->{parent_msg} = $parent;
741 $$dst .= "$nr+ messages / $expand";
742 $$dst .= qq! <a\nhref="#b">top</a>\n!;
744 # nb: mutt only shows the first Subject in the index pane
745 # when multiple Subject: headers are present, so we follow suit:
746 my $subj = $hdr->header('Subject') // '';
747 $subj = '(no subject)' if $subj eq '';
748 $ctx->{prev_subj} = [ split(/ /, subject_normalized($subj)) ];
750 $ctx->{prev_attr} = '';
751 $ctx->{prev_level} = 0;
754 # reduce hash lookups in skel_dump
755 $ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
756 walk_thread(thread_results($ctx, $msgs), $ctx, *skel_dump);
758 $ctx->{parent_msg} = $parent;
761 sub _parent_headers {
762 my ($hdr, $over) = @_;
764 my @irt = $hdr->header_raw('In-Reply-To');
767 my $lnk = PublicInbox::Linkify->new;
768 $rv .= "In-Reply-To: $_\n" for @irt;
769 $lnk->linkify_mids('..', \$rv);
771 $refs = references($hdr);
772 my $irt = pop @$refs;
774 my $v = PublicInbox::Hval->new_msgid($irt);
775 my $html = $v->as_html;
776 my $href = $v->{href};
777 $rv .= "In-Reply-To: <";
778 $rv .= "<a\nhref=\"../$href/\">$html</a>>\n";
782 # do not display References: if search is present,
783 # we show the thread skeleton at the bottom, instead.
786 $refs //= references($hdr);
788 @$refs = map { linkify_ref_no_over($_) } @$refs;
789 $rv .= 'References: '. join("\n\t", @$refs) . "\n";
795 my ($hdr, $standalone, $ctx, $rhref) = @_;
797 my $ibx = $ctx->{-inbox} if $ctx;
800 my $idx = $standalone ? " <a\nhref=\"$upfx\">index</a>" : '';
802 if ($idx && $ibx->over) {
804 thread_skel(\$idx, $ctx, $hdr, $tpfx);
809 if (my $n = $ctx->{next_msg}) {
810 $n = PublicInbox::Hval->new_msgid($n)->{href};
811 $next = "<a\nhref=\"$upfx$n/\"\nrel=next>next</a>";
814 my $par = $ctx->{parent_msg};
816 $u = PublicInbox::Hval->new_msgid($par)->{href};
819 if (my $p = $ctx->{prev_msg}) {
820 $prev = PublicInbox::Hval->new_msgid($p)->{href};
821 if ($p && $par && $p eq $par) {
822 $prev = "<a\nhref=\"$upfx$prev/\"\n" .
823 'rel=prev>prev parent</a>';
826 $prev = "<a\nhref=\"$upfx$prev/\"\n" .
828 $parent = " <a\nhref=\"$u\">parent</a>" if $u;
830 } elsif ($u) { # unlikely
831 $parent = " <a\nhref=\"$u\"\nrel=prev>parent</a>";
833 $irt = "$next $prev$parent ";
838 $irt .= qq(<a\nhref="$rhref">reply</a>);
842 sub linkify_ref_no_over {
843 my $v = PublicInbox::Hval->new_msgid($_[0]);
844 my $html = $v->as_html;
845 my $href = $v->{href};
846 "<<a\nhref=\"../$href/\">$html</a>>";
851 'm' . id_compress($msgid, 1);
855 my ($upfx, $mid) = @_;
857 $mid = PublicInbox::Hval->new_msgid($mid);
858 my $href = $mid->{href};
859 my $html = $mid->as_html;
860 qq{[parent not found: <<a\nhref="$upfx$href/">$html</a>>]};
865 $level ? INDENT x ($level - 1) : '';
869 my ($ctx, $level, $node, $idx) = @_;
870 ++$ctx->{root_idx} if $level == 0;
871 if ($node->{id} eq $ctx->{mid}) {
872 $ctx->{found_mid_at} = $ctx->{root_idx};
878 sub strict_loose_note ($) {
881 " -- strict thread matches above, loose matches on Subject: below --\n";
883 if ($nr > PublicInbox::Over::DEFAULT_LIMIT()) {
885 " -- use mbox.gz link to download all $nr messages --\n";
891 my ($ctx, $msgs) = @_;
892 require PublicInbox::SearchThread;
893 my $rootset = PublicInbox::SearchThread::thread($msgs, \&sort_ds, $ctx);
895 # FIXME: `tid' is broken on --reindex, so that needs to be fixed
896 # and preserved in the future. This bug is hidden by `sid' matches
897 # in get_thread, so we never noticed it until now. And even when
898 # reindexing is fixed, we'll keep this code until a SCHEMA_VERSION
899 # bump since reindexing is expensive and users may not do it
901 # loose threading could've returned too many results,
902 # put the root the message we care about at the top:
903 my $mid = $ctx->{mid};
904 if (defined($mid) && scalar(@$rootset) > 1) {
905 $ctx->{root_idx} = -1;
906 my $nr = scalar @$msgs;
907 walk_thread($rootset, $ctx, *find_mid_root);
908 my $idx = $ctx->{found_mid_at};
909 if (defined($idx) && $idx != 0) {
910 my $tip = splice(@$rootset, $idx, 1);
911 @$rootset = reverse @$rootset;
912 unshift @$rootset, $tip;
913 $ctx->{sl_note} = strict_loose_note($nr);
921 require PublicInbox::ExtMsg;
922 PublicInbox::ExtMsg::ext_msg($ctx);
925 sub fmt_ts { POSIX::strftime('%Y-%m-%d %k:%M', gmtime($_[0])) }
928 my ($prev_subj, $subj, $val) = @_;
930 my $omit = ''; # '"' denotes identical text omitted
931 my (@prev_pop, @curr_pop);
932 while (@$prev_subj && @$subj && $subj->[-1] eq $prev_subj->[-1]) {
933 push(@prev_pop, pop(@$prev_subj));
934 push(@curr_pop, pop(@$subj));
937 pop @$subj if @$subj && $subj->[-1] =~ /^re:\s*/i;
938 if (scalar(@curr_pop) == 1) {
940 push @$prev_subj, @prev_pop;
941 push @$subj, @curr_pop;
947 my ($ctx, $level, $node) = @_;
948 my $smsg = $node->{smsg} or return _skel_ghost($ctx, $level, $node);
950 my $dst = $ctx->{dst};
951 my $cur = $ctx->{cur};
952 my $mid = $smsg->{mid};
954 if ($level == 0 && $ctx->{skel_dump_roots}++) {
955 $$dst .= delete $ctx->{sl_note} || '';
958 my $f = ascii_html($smsg->from_name);
959 my $obfs_ibx = $ctx->{-obfs_ibx};
960 obfuscate_addrs($obfs_ibx, $f) if $obfs_ibx;
962 my $d = fmt_ts($smsg->{ds});
963 my $unmatched; # if lazy-loaded by SearchThread::Msg::visible()
964 if (exists $ctx->{searchview}) {
965 if (defined(my $pct = $smsg->{pct})) {
966 $d .= (sprintf(' % 2u', $pct) . '%');
972 $d .= ' ' . indent_for($level) . th_pfx($level);
974 $ctx->{first_level} ||= $level;
976 if ($attr ne $ctx->{prev_attr} || $ctx->{prev_level} > $level) {
977 $ctx->{prev_attr} = $attr;
979 $ctx->{prev_level} = $level;
984 $$dst .= "<b>$d<a\nid=r\nhref=\"#t\">".
985 "$attr [this message]</a></b>\n";
988 $ctx->{prev_msg} = $mid;
991 $ctx->{next_msg} ||= $mid;
994 # Subject is never undef, this mail was loaded from
995 # our Xapian which would've resulted in '' if it were
996 # really missing (and Filter rejects empty subjects)
997 my @subj = split(/ /, subject_normalized($smsg->subject));
998 # remove common suffixes from the subject if it matches the previous,
999 # so we do not show redundant text at the end.
1000 my $prev_subj = $ctx->{prev_subj} || [];
1001 $ctx->{prev_subj} = [ @subj ];
1002 my $omit = dedupe_subject($prev_subj, \@subj, '" ');
1005 my $subj = join(' ', @subj);
1006 $subj = ascii_html($subj);
1007 obfuscate_addrs($obfs_ibx, $subj) if $obfs_ibx;
1008 $end = "$subj</a> $omit$f\n"
1014 my $mapping = $unmatched ? undef : $ctx->{mapping};
1016 my $map = $mapping->{$mid};
1017 $id = id_compress($mid, 1);
1019 $map->[0] = "$d<a\nhref=\"$m\">$end";
1022 $m = $ctx->{-upfx}.mid_escape($mid).'/';
1024 $$dst .= $d . "<a\nhref=\"$m\"$id>" . $end;
1029 my ($ctx, $level, $node) = @_;
1031 my $mid = $node->{id};
1032 my $d = ' [not found] ';
1033 $d .= ' ' if exists $ctx->{searchview};
1034 $d .= indent_for($level) . th_pfx($level);
1035 my $upfx = $ctx->{-upfx};
1036 my $m = PublicInbox::Hval->new_msgid($mid);
1037 my $href = $upfx . $m->{href} . '/';
1038 my $html = $m->as_html;
1040 my $mapping = $ctx->{mapping};
1041 my $map = $mapping->{$mid} if $mapping;
1043 my $id = id_compress($mid, 1);
1044 $map->[0] = $d . qq{<<a\nhref=#r$id>$html</a>>\n};
1045 $d .= qq{<<a\nhref="$href"\nid=r$id>$html</a>>\n};
1047 $d .= qq{<<a\nhref="$href">$html</a>>\n};
1049 my $dst = $ctx->{dst};
1056 (eval { $a->topmost->{smsg}->ds } || 0) <=>
1057 (eval { $b->topmost->{smsg}->ds } || 0)
1061 # accumulate recent topics if search is supported
1062 # returns 200 if done, 404 if not
1064 my ($ctx, $level, $node) = @_;
1065 my $mid = $node->{id};
1066 my $x = $node->{smsg} || $ctx->{-inbox}->smsg_by_mid($mid);
1070 $subj = $x->subject;
1071 $subj = subject_normalized($subj);
1072 $subj = '(no subject)' if $subj eq '';
1075 $topic = [ $ds, 1, { $subj => $mid }, $subj ];
1076 $ctx->{-cur_topic} = $topic;
1077 push @{$ctx->{order}}, $topic;
1081 $topic = $ctx->{-cur_topic}; # should never be undef
1082 $topic->[0] = $ds if $ds > $topic->[0];
1084 my $seen = $topic->[2];
1085 if (scalar(@$topic) == 3) { # parent was a ghost
1086 push @$topic, $subj;
1087 } elsif (!$seen->{$subj}) {
1088 push @$topic, $level, $subj;
1090 $seen->{$subj} = $mid; # latest for subject
1091 } else { # ghost message
1092 return 1 if $level != 0; # ignore child ghosts
1093 $topic = [ -666, 0, {} ];
1094 $ctx->{-cur_topic} = $topic;
1095 push @{$ctx->{order}}, $topic;
1102 my $order = delete $ctx->{order}; # [ ds, subj1, subj2, subj3, ... ]
1104 $ctx->{-html_tip} = '<pre>[No topics in range]</pre>';
1109 my $ibx = $ctx->{-inbox};
1110 my $obfs_ibx = $ibx->{obfuscate} ? $ibx : undef;
1112 # sort by recency, this allows new posts to "bump" old topics...
1113 foreach my $topic (sort { $b->[0] <=> $a->[0] } @$order) {
1114 my ($ds, $n, $seen, $top, @ex) = @$topic;
1116 next unless defined $top; # ghost topic
1117 my $mid = delete $seen->{$top};
1118 my $href = mid_escape($mid);
1119 my $prev_subj = [ split(/ /, $top) ];
1120 $top = PublicInbox::Hval->new($top)->as_html;
1123 # $n isn't the total number of posts on the topic,
1124 # just the number of posts in the current results window
1128 $anchor = '#u'; # top of only message
1130 $n = " ($n+ messages)";
1131 $anchor = '#t'; # thread skeleton
1134 my $mbox = qq(<a\nhref="$href/t.mbox.gz">mbox.gz</a>);
1135 my $atom = qq(<a\nhref="$href/t.atom">Atom</a>);
1136 my $s = "<a\nhref=\"$href/T/$anchor\">$top</a>\n" .
1137 " $ds UTC $n - $mbox / $atom\n";
1138 for (my $i = 0; $i < scalar(@ex); $i += 2) {
1139 my $level = $ex[$i];
1140 my $subj = $ex[$i + 1];
1141 $mid = delete $seen->{$subj};
1142 my @subj = split(/ /, subject_normalized($subj));
1143 my @next_prev = @subj; # full copy
1144 my $omit = dedupe_subject($prev_subj, \@subj, ' "');
1145 $prev_subj = \@next_prev;
1146 $subj = ascii_html(join(' ', @subj));
1147 obfuscate_addrs($obfs_ibx, $subj) if $obfs_ibx;
1148 $href = mid_escape($mid);
1149 $s .= indent_for($level) . TCHILD;
1150 $s .= "<a\nhref=\"$href/T/#u\">$subj</a>$omit\n";
1154 $ctx->{-html_tip} = '<pre>' . join("\n", @out) . '</pre>';
1160 POSIX::strftime('%Y%m%d%H%M%S', gmtime($ts));
1164 my ($yyyy, $mon, $dd, $hh, $mm, $ss) = unpack('A4A2A2A2A2A2', $_[0]);
1165 timegm($ss, $mm, $hh, $dd, $mon - 1, $yyyy);
1168 sub pagination_footer ($$) {
1169 my ($ctx, $latest) = @_;
1170 delete $ctx->{qp} or return;
1171 my $next = $ctx->{next_page} || '';
1172 my $prev = $ctx->{prev_page} || '';
1174 $next = $next ? "$next " : ' ';
1175 $prev .= qq! <a\nhref='$latest'>latest</a>!;
1177 "<hr><pre>page: $next$prev</pre>";
1180 sub index_nav { # callback for WwwStream
1181 my (undef, $ctx) = @_;
1182 pagination_footer($ctx, '.')
1185 sub paginate_recent ($$) {
1186 my ($ctx, $lim) = @_;
1187 my $t = $ctx->{qp}->{t} || '';
1188 my $opts = { limit => $lim };
1189 my ($after, $before);
1191 # Xapian uses '..' but '-' is perhaps friendier to URL linkifiers
1192 # if only $after exists "YYYYMMDD.." because "." could be skipped
1193 # if interpreted as an end-of-sentence
1194 $t =~ s/\A([0-9]{8,14})-// and $after = str2ts($1);
1195 $t =~ /\A([0-9]{8,14})\z/ and $before = str2ts($1);
1197 my $ibx = $ctx->{-inbox};
1198 my $msgs = $ibx->recent($opts, $after, $before);
1199 my $nr = scalar @$msgs;
1200 if ($nr < $lim && defined($after)) {
1201 $after = $before = undef;
1202 $msgs = $ibx->recent($opts);
1203 $nr = scalar @$msgs;
1205 my $more = $nr == $lim;
1206 my ($newest, $oldest);
1208 $newest = $msgs->[0]->{ts};
1209 $oldest = $msgs->[-1]->{ts};
1210 # if we only had $after, our SQL query in ->recent ordered
1211 if ($newest < $oldest) {
1212 ($oldest, $newest) = ($newest, $oldest);
1213 $more = 0 if defined($after) && $after < $oldest;
1216 if (defined($oldest) && $more) {
1217 my $s = ts2str($oldest);
1218 $ctx->{next_page} = qq!<a\nhref="?t=$s"\nrel=next>next</a>!;
1220 if (defined($newest) && (defined($before) || defined($after))) {
1221 my $s = ts2str($newest);
1222 $ctx->{prev_page} = qq!<a\nhref="?t=$s-"\nrel=prev>prev</a>!;
1229 my $msgs = paginate_recent($ctx, 200); # 200 is our window
1231 walk_thread(thread_results($ctx, $msgs), $ctx, *acc_topic);
1233 PublicInbox::WwwStream->response($ctx, dump_topics($ctx), *index_nav);
1236 sub thread_adj_level {
1237 my ($ctx, $level) = @_;
1239 my $max = $ctx->{cur_level};
1241 return ('', '') if $max == 0; # flat output
1243 # reset existing lists
1244 my $beg = $max > 1 ? ('</ul></li>' x ($max - 1)) : '';
1245 $ctx->{cur_level} = 0;
1247 } elsif ($level == $max) { # continue existing list
1249 } elsif ($level < $max) {
1250 my $beg = $max > 1 ? ('</ul></li>' x ($max - $level)) : '';
1251 $ctx->{cur_level} = $level;
1252 ("$beg<li>", '</li>');
1253 } else { # ($level > $max) # start a new level
1254 $ctx->{cur_level} = $level;
1255 my $beg = ($max ? '<li>' : '') . '<ul><li>';
1260 sub ghost_index_entry {
1261 my ($ctx, $level, $node) = @_;
1262 my ($beg, $end) = thread_adj_level($ctx, $level);
1263 $beg . '<pre>'. ghost_parent($ctx->{-upfx}, $node->{id})