1 # Copyright (C) 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 List::Util qw(max);
10 use Text::Wrap qw(wrap); # stdlib, we need Perl 5.6+ for $huge
11 use PublicInbox::MsgTime qw(msg_datestamp);
12 use PublicInbox::Hval qw(ascii_html obfuscate_addrs prurl mid_href
14 use PublicInbox::Linkify;
15 use PublicInbox::MID qw(id_compress mids mids_for_index references
17 use PublicInbox::MsgIter;
18 use PublicInbox::Address;
19 use PublicInbox::WwwStream qw(html_oneshot);
20 use PublicInbox::Reply;
21 use PublicInbox::ViewDiff qw(flush_diff);
23 use POSIX qw(strftime);
24 use Time::Local qw(timegm);
25 use PublicInbox::Smsg qw(subject_normalized);
26 use PublicInbox::ContentHash qw(content_hash);
27 use constant COLS => 72;
28 use constant INDENT => ' ';
29 use constant TCHILD => '` ';
30 sub th_pfx ($) { $_[0] == 0 ? '' : TCHILD };
34 if ($eml) { # called by WwwStream::async_eml or getline
35 my $smsg = $ctx->{smsg};
36 my $over = $ctx->{ibx}->over;
37 $ctx->{smsg} = $over ? $over->next_by_mid(@{$ctx->{next_arg}})
39 $ctx->{mhref} = ($ctx->{nr} || $ctx->{smsg}) ?
40 "../${\mid_href($smsg->{mid})}/" : '';
41 if (_msg_page_prepare_obuf($eml, $ctx)) {
42 $eml->each_part(\&add_text_body, $ctx, 1);
43 $ctx->zmore('</pre><hr>');
45 html_footer($ctx, $ctx->{first_hdr}) if !$ctx->{smsg};
46 delete($ctx->{obuf}) // \'';
47 } else { # called by WwwStream::async_next or getline
48 $ctx->{smsg}; # may be undef
52 # /$INBOX/$MSGID/ for unindexed v1 inboxes
53 sub no_over_html ($) {
55 my $bref = $ctx->{ibx}->msg_by_mid($ctx->{mid}) or return; # 404
56 my $eml = PublicInbox::Eml->new($bref);
58 PublicInbox::WwwStream::init($ctx);
59 if (_msg_page_prepare_obuf($eml, $ctx)) { # sets {-title_html}
60 $eml->each_part(\&add_text_body, $ctx, 1);
61 $ctx->zmore('</pre><hr>');
63 html_footer($ctx, $eml);
67 # public functions: (unstable)
71 my $ibx = $ctx->{ibx};
72 $ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
73 my $over = $ibx->over or return no_over_html($ctx);
75 my $next_arg = $ctx->{next_arg} = [ $ctx->{mid}, \$id, \$prev ];
77 my $smsg = $ctx->{smsg} = $over->next_by_mid(@$next_arg) or
78 return; # undef == 404
80 # allow user to easily browse the range around this message if
82 $ctx->{-t_max} = $smsg->{ts};
83 PublicInbox::WwwStream::aresponse($ctx, \&msg_page_i);
86 # /$INBOX/$MESSAGE_ID/#R
90 'https://kernel.org/pub/software/scm/git/docs/git-send-email.html';
92 'https://en.wikipedia.org/wiki/Posting_style#Interleaved_style';
95 my $ibx = $ctx->{ibx};
96 if (my $url = $ibx->{infourl}) {
97 $url = prurl($ctx->{env}, $url);
98 $info = qq(\n List information: <a\nhref="$url">$url</a>\n);
101 my ($arg, $link, $reply_to_all) =
102 PublicInbox::Reply::mailto_arg_link($ibx, $hdr);
103 if (ref($arg) eq 'SCALAR') {
104 return '<pre id=R>'.ascii_html($$arg).'</pre>';
107 # mailto: link only works if address obfuscation is disabled
111 * If your mail client supports setting the <b>In-Reply-To</b> header
112 via mailto: links, try the <a
113 href="$link">mailto: link</a>
117 push @$arg, '/path/to/YOUR_REPLY';
118 $arg = ascii_html(join(" \\\n ", '', @$arg));
121 id=R><b>Reply instructions:</b>
123 You may reply publicly to <a
124 href=#t>this message</a> via plain-text email
125 using any one of the following methods:
127 * Save the following mbox file, import it into your mail client,
128 and $reply_to_all from there: <a
131 Avoid top-posting and favor interleaved quoting:
133 href="$p_url">$p_url</a>
135 * Reply using the <b>--to</b>, <b>--cc</b>, and <b>--in-reply-to</b>
136 switches of git-send-email(1):
141 href="$se_url">$se_url</a>
144 Be sure your reply has a <b>Subject:</b> header at the top and a blank line
145 before the message body.
151 my $refs = references($hdr);
155 sub fold_addresses ($) {
156 return $_[0] if length($_[0]) <= COLS;
157 # try to fold on commas after non-word chars before $lim chars,
158 # Try to get the "," preceded by ">" or ")", but avoid folding
159 # on the comma where somebody uses "Lastname, Firstname".
160 # We also try to keep the last and penultimate addresses in
161 # the list on the same line if possible, hence the extra \z
162 # Fall back to folding on spaces at $lim + 1 chars
163 my $lim = COLS - 8; # 8 = "\t" display width
164 my $too_long = $lim + 1;
165 $_[0] =~ s/\s*\z//s; # Email::Simple doesn't strip trailing spaces
167 ($_[0] =~ /(.{0,$lim}\W(?:,|\z)|
170 .{$too_long,}?)(?:\s|\z)/xgo));
173 sub _hdr_names_html ($$) {
174 my ($hdr, $field) = @_;
175 my @vals = $hdr->header($field) or return '';
176 ascii_html(join(', ', PublicInbox::Address::names(join(',', @vals))));
180 my ($nr, $singular, $plural) = @_;
181 return "0 $plural" if $nr == 0;
182 $nr == 1 ? "$nr $singular" : "$nr $plural";
185 # Displays the text of of the message for /$INBOX/$MSGID/[Tt]/ endpoint
186 # this is already inside a <pre>
188 my ($ctx, $eml) = @_;
189 my $smsg = delete $ctx->{smsg};
190 my $subj = delete $smsg->{subject};
191 my $mid_raw = $smsg->{mid};
192 my $id = id_compress($mid_raw, 1);
194 my $root_anchor = $ctx->{root_anchor} || '';
196 my $obfs_ibx = $ctx->{-obfs_ibx};
198 $subj = '(no subject)' if $subj eq '';
199 my $rv = "<a\nhref=#e$id\nid=m$id>*</a> ";
200 $subj = '<b>'.ascii_html($subj).'</b>';
201 obfuscate_addrs($obfs_ibx, $subj) if $obfs_ibx;
202 $subj = "<u\nid=u>$subj</u>" if $root_anchor eq $id_m;
204 $rv .= _th_index_lite($mid_raw, \$irt, $id, $ctx);
206 my $ds = delete $smsg->{ds}; # for v1 non-Xapian/SQLite users
208 # Deleting these fields saves about 400K as we iterate across 1K msgs
209 delete @$smsg{qw(ts blob)};
211 my $from = _hdr_names_html($eml, 'From');
212 obfuscate_addrs($obfs_ibx, $from) if $obfs_ibx;
213 $rv .= "From: $from @ ".fmt_ts($ds)." UTC";
214 my $upfx = $ctx->{-upfx};
215 my $mhref = $upfx . mid_href($mid_raw) . '/';
216 $rv .= qq{ (<a\nhref="$mhref">permalink</a> / };
217 $rv .= qq{<a\nhref="${mhref}raw">raw</a>)\n};
218 my $to = fold_addresses(_hdr_names_html($eml, 'To'));
219 my $cc = fold_addresses(_hdr_names_html($eml, 'Cc'));
220 my ($tlen, $clen) = (length($to), length($cc));
222 if (($tlen + $clen) > COLS) {
223 $to_cc .= ' To: '.$to."\n" if $tlen;
224 $to_cc .= ' Cc: '.$cc."\n" if $clen;
227 $to_cc .= ' To: '.$to;
228 $to_cc .= '; <b>+Cc:</b> '.$cc if $clen;
230 $to_cc .= ' Cc: '.$cc if $clen;
234 obfuscate_addrs($obfs_ibx, $to_cc) if $obfs_ibx;
237 my $mapping = $ctx->{mapping};
238 if (!$mapping && (defined($irt) || defined($irt = in_reply_to($eml)))) {
239 my $href = $upfx . mid_href($irt) . '/';
240 my $html = ascii_html($irt);
241 $rv .= qq(In-Reply-To: <<a\nhref="$href">$html</a>>\n)
245 # scan through all parts, looking for displayable text
246 $ctx->{mhref} = $mhref;
247 $ctx->{changed_href} = "#e$id"; # for diffstat "files? changed,"
249 $eml->each_part(\&add_text_body, $ctx, 1); # expensive
250 $ctx->zmore; # TODO: remove once add_text_body is updated
253 $rv = "\n<a\nhref=#$id_m\nid=e$id>^</a> ".
254 "<a\nhref=\"$mhref\">permalink</a>" .
255 " <a\nhref=\"${mhref}raw\">raw</a>" .
256 " <a\nhref=\"${mhref}#R\">reply</a>";
258 delete($ctx->{-qry}) and
259 $rv .= qq[ <a\nhref="${mhref}#related">related</a>];
262 if (defined(my $pct = $smsg->{pct})) { # used by SearchView.pm
263 $rv .= "\t[relevance $pct%]";
266 my $nested = 'nested';
270 $flat = "<b>$flat</b>";
272 $nested = "<b>$nested</b>";
274 $rv .= "\t[<a\nhref=\"${mhref}T/#u\">$flat</a>";
275 $rv .= "|<a\nhref=\"${mhref}t/#u\">$nested</a>]";
276 $rv .= " <a\nhref=#r$id>$ctx->{s_nr}</a>";
281 # do we have more messages? start a new <pre> if so
282 $rv .= scalar(@{$ctx->{msgs}}) ? '</pre><hr><pre>' : '</pre>' if $hr;
286 sub pad_link ($$;$) {
287 my ($mid, $level, $s) = @_;
289 my $href = defined($mid) ?
290 ("<a\nhref=#r".id_compress($mid, 1).">($s)</a>\n") :
292 (' 'x19).indent_for($level).th_pfx($level).$href;
296 # my ($mapping, $mid) = @_;
297 ($_[0]->{$_[1] // \'bogus'} // [ "(?)\n" ])->[0];
301 my ($mid_raw, $irt, $id, $ctx) = @_;
303 my $mapping = $ctx->{mapping} or return $rv;
305 my $mid_map = $mapping->{$mid_raw};
307 return 'public-inbox BUG: '.ascii_html($mid_raw).' not mapped';
308 my ($attr, $node, $idx, $level) = @$mid_map;
309 my $children = $node->{children};
310 my $nr_c = scalar @$children;
313 # delete saves about 200KB on a 1K message thread
314 if (my $refs = delete $node->{references}) {
315 ($$irt) = ($refs =~ m/$MID_EXTRACT\z/o);
317 my $irt_map = $mapping->{$$irt} if defined $$irt;
318 if (defined $irt_map) {
319 $siblings = $irt_map->[1]->{children};
320 $nr_s = scalar(@$siblings) - 1;
321 $rv .= $pad . $irt_map->[0];
323 my $prev = $siblings->[$idx - 1];
324 my $pmid = $prev->{mid};
326 my $s = ($idx - 1). ' preceding siblings ...';
327 $rv .= pad_link($pmid, $level, $s);
328 } elsif ($idx == 2) {
329 $rv .= $pad . _skel_hdr($mapping,
331 $siblings->[0]->{mid} : undef);
333 $rv .= $pad . _skel_hdr($mapping, $pmid);
336 my $s_s = nr_to_s($nr_s, 'sibling', 'siblings');
337 my $s_c = nr_to_s($nr_c, 'reply', 'replies');
338 $attr =~ s!\n\z!</b>\n!s;
339 $attr =~ s!<a\nhref.*</a> (?:" )?!!s; # no point in dup subject
340 $attr =~ s!<a\nhref=[^>]+>([^<]+)</a>!$1!s; # no point linking to self
343 my $cmid = $children->[0] ? $children->[0]->{mid} : undef;
344 $rv .= $pad . _skel_hdr($mapping, $cmid);
346 my $s = ($nr_c - 1). ' more replies';
347 $rv .= pad_link($cmid, $level + 1, $s);
348 } elsif (my $cn = $children->[1]) {
349 $rv .= $pad . _skel_hdr($mapping, $cn->{mid});
353 my $next = $siblings->[$idx+1] if $siblings && $idx >= 0;
355 my $nmid = $next->{mid};
356 $rv .= $pad . _skel_hdr($mapping, $nmid);
357 my $nnext = $nr_s - $idx;
359 my $s = ($nnext - 1).' subsequent siblings';
360 $rv .= pad_link($nmid, $level, $s);
361 } elsif (my $nn = $siblings->[$idx + 2]) {
362 $rv .= $pad . _skel_hdr($mapping, $nn->{mid});
365 $rv .= $pad ."<a\nhref=#r$id>$s_s, $s_c; $ctx->{s_nr}</a>\n";
368 # non-recursive thread walker
369 sub walk_thread ($$$) {
370 my ($rootset, $ctx, $cb) = @_;
371 my @q = map { (0, $_, -1) } @$rootset;
373 my ($level, $node, $i) = splice(@q, 0, 3);
374 defined $node or next;
375 $cb->($ctx, $level, $node, $i) or return;
378 unshift @q, map { ($level, $_, $i++) } @{$node->{children}};
382 sub pre_thread { # walk_thread callback
383 my ($ctx, $level, $node, $idx) = @_;
384 $ctx->{mapping}->{$node->{mid}} = [ '', $node, $idx, $level ];
385 skel_dump($ctx, $level, $node);
388 sub thread_eml_entry {
389 my ($ctx, $eml) = @_;
390 my ($beg, $end) = thread_adj_level($ctx, $ctx->{level});
391 $ctx->zmore($beg.'<pre>');
392 eml_entry($ctx, $eml) . '</pre>' . $end;
395 sub next_in_queue ($$) {
396 my ($q, $ghost_ok) = @_;
398 my ($level, $smsg) = splice(@$q, 0, 2);
400 unshift @$q, map { ($cl, $_) } @{$smsg->{children}};
401 return ($level, $smsg) if $ghost_ok || exists($smsg->{blob});
406 sub stream_thread_i { # PublicInbox::WwwStream::getline callback
407 my ($ctx, $eml) = @_;
408 return thread_eml_entry($ctx, $eml) if $eml;
409 return unless exists($ctx->{skel});
410 my $ghost_ok = $ctx->{nr}++;
412 my ($lvl, $smsg) = next_in_queue($ctx->{-queue}, $ghost_ok);
414 if (exists $smsg->{blob}) { # next message for cat-file
415 $ctx->{level} = $lvl;
416 if (!$ghost_ok) { # first non-ghost
417 $ctx->{-title_html} =
418 ascii_html($smsg->{subject});
419 $ctx->zmore($ctx->html_top);
423 # buffer the ghost entry and loop
424 $ctx->zmore(ghost_index_entry($ctx, $lvl, $smsg));
426 $ctx->zmore(join('', thread_adj_level($ctx, 0)));
427 $ctx->zmore(${delete($ctx->{skel})});
433 sub stream_thread ($$) {
434 my ($rootset, $ctx) = @_;
435 @{$ctx->{-queue}} = map { (0, $_) } @$rootset;
436 PublicInbox::WwwStream::aresponse($ctx, \&stream_thread_i);
439 # /$INBOX/$MSGID/t/ and /$INBOX/$MSGID/T/
442 $ctx->{-upfx} = '../../';
443 my $mid = $ctx->{mid};
444 my $ibx = $ctx->{ibx};
445 my ($nr, $msgs) = $ibx->over->get_thread($mid);
446 return missing_thread($ctx) if $nr == 0;
448 # link $INBOX_DIR/description text to "index_topics" view around
449 # the newest message in this thread
450 my $t = ts2str($ctx->{-t_max} = max(map { delete $_->{ts} } @$msgs));
451 my $t_fmt = fmt_ts($ctx->{-t_max});
453 my $skel = '<hr><pre>';
454 $skel .= $nr == 1 ? 'only message in thread' : 'end of thread';
457 href="../../?t=$t">~$t_fmt UTC</a> | <a
458 href="../../">newest</a>]
461 $skel .= "<b\nid=t>Thread overview:</b> ";
462 $skel .= $nr == 1 ? '(only message)' : "$nr+ messages";
463 $skel .= " (download: <a\nhref=\"../t.mbox.gz\">mbox.gz</a>";
464 $skel .= " / follow: <a\nhref=\"../t.atom\">Atom feed</a>)\n";
465 $skel .= "-- links below jump to the message on this page --\n";
466 $ctx->{cur_level} = 0;
467 $ctx->{skel} = \$skel;
468 $ctx->{prev_attr} = '';
469 $ctx->{prev_level} = 0;
470 $ctx->{root_anchor} = 'm' . id_compress($mid, 1);
471 $ctx->{mapping} = {}; # mid -> [ header_summary, node, idx, level ]
472 $ctx->{s_nr} = ($nr > 1 ? "$nr+ messages" : 'only message')
475 my $rootset = thread_results($ctx, $msgs);
477 # reduce hash lookups in pre_thread->skel_dump
478 $ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
479 walk_thread($rootset, $ctx, \&pre_thread);
482 return stream_thread($rootset, $ctx) unless $ctx->{flat};
484 # flat display: lazy load the full message from smsg
485 $ctx->{msgs} = $msgs;
486 $ctx->{-html_tip} = '<pre>';
487 PublicInbox::WwwStream::aresponse($ctx, \&thread_html_i);
490 sub thread_html_i { # PublicInbox::WwwStream::getline callback
491 my ($ctx, $eml) = @_;
493 my $smsg = $ctx->{smsg};
494 if (exists $ctx->{-html_tip}) {
495 $ctx->{-title_html} = ascii_html($smsg->{subject});
496 $ctx->zmore($ctx->html_top);
498 return eml_entry($ctx, $eml);
500 while (my $smsg = shift @{$ctx->{msgs}}) {
501 return $smsg if exists($smsg->{blob});
503 my $skel = delete($ctx->{skel}) or return; # all done
509 sub submsg_hdr ($$) {
510 my ($ctx, $eml) = @_;
511 my $obfs_ibx = $ctx->{-obfs_ibx};
512 my $rv = $ctx->{obuf};
514 for my $h (qw(From To Cc Subject Date Message-ID X-Alt-Message-ID)) {
515 my @v = $eml->header($h);
517 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx;
524 sub attach_link ($$$$;$) {
525 my ($ctx, $ct, $p, $fn, $err) = @_;
526 my ($part, $depth, $idx) = @$p;
528 # Eml iteration clobbers multipart ->{bdy}, so do not offer
529 # downloads for 0-byte multipart attachments
530 return unless $part->{bdy};
532 my $nl = $idx eq '1' ? '' : "\n"; # like join("\n", ...)
533 my $size = length($part->body);
534 delete $part->{bdy}; # save memory
536 # hide attributes normally, unless we want to aid users in
537 # spotting MUA problems:
538 $ct =~ s/;.*// unless $err;
539 $ct = ascii_html($ct);
541 if (defined $fn && $fn =~ /\A$PublicInbox::Hval::FN\z/o) {
543 } elsif ($ct eq 'text/plain') {
548 my $rv = $ctx->{obuf};
549 $$rv .= qq($nl<a\nhref="$ctx->{mhref}$idx-$sfn">);
552 [-- Warning: decoded text below may be mangled, UTF-8 assumed --]
555 $$rv .= "[-- Attachment #$idx: ";
556 my $ts = "Type: $ct, Size: $size bytes";
557 my $desc = $part->header('Content-Description') // $fn // '';
558 $desc = ascii_html($desc);
559 $$rv .= ($desc eq '') ? "$ts --]" : "$desc --]\n[-- $ts --]";
562 submsg_hdr($ctx, $part) if $part->{is_submsg};
567 sub add_text_body { # callback for each_part
569 my $upfx = $ctx->{mhref};
570 my $ibx = $ctx->{ibx};
571 my $l = $ctx->{-linkify} //= PublicInbox::Linkify->new;
572 # $p - from each_part: [ Email::MIME-like, depth, $idx ]
573 my ($part, $depth, $idx) = @$p;
574 my $ct = $part->content_type || 'text/plain';
575 my $fn = $part->filename;
576 my ($s, $err) = msg_part_text($part, $ct);
577 return attach_link($ctx, $ct, $p, $fn) unless defined $s;
579 my $rv = $ctx->{obuf};
580 if ($part->{is_submsg}) {
581 submsg_hdr($ctx, $part);
585 # makes no difference to browsers, and don't screw up filename
586 # link generation in diffs with the extra '%0D'
589 # will be escaped to `•' in HTML
590 obfuscate_addrs($ibx, $s, "\x{2022}") if $ibx->{obfuscate};
592 # always support diff-highlighting, but we can't linkify hunk
593 # headers for solver unless some coderepo are configured:
595 if ($s =~ /^--- [^\n]+\n\+{3} [^\n]+\n@@ /ms) {
596 # diffstat anchors do not link across attachments or messages,
597 # -apfx is just a stable prefix for making diffstat anchors
598 # linkable to the first diff hunk w/o crossing attachments
599 $idx =~ tr!.!/!; # compatibility with previous versions
600 $ctx->{-apfx} = $upfx . $idx;
602 # do attr => filename mappings for diffstats in git diffs:
603 $ctx->{-anchors} = {} if $s =~ /^diff --git /sm;
605 delete $ctx->{-long_path};
607 # absolute URL (Atom feeds)
608 if ($ibx->{coderepo}) {
609 if (index($upfx, '//') >= 0) {
611 $spfx =~ s!/([^/]*)/\z!/!;
613 my $n_slash = $upfx =~ tr!/!/!;
616 } elsif ($n_slash == 1) {
618 } else { # nslash == 2
623 $ctx->{-spfx} = $spfx;
626 # split off quoted and unquoted blocks:
627 my @sections = PublicInbox::MsgIter::split_quotes($s);
628 undef $s; # free memory
629 if (defined($fn) || ($depth > 0 && !$part->{is_submsg}) || $err) {
630 # badly-encoded message with $err? tell the world about it!
631 attach_link($ctx, $ct, $p, $fn, $err);
634 delete $part->{bdy}; # save memory
635 foreach my $cur (@sections) {
637 # we use a <span> here to allow users to specify
638 # their own color for quoted text
639 $$rv .= qq(<span\nclass="q">);
640 $$rv .= $l->to_html($cur);
643 flush_diff($ctx, \$cur);
646 $$rv .= $l->to_html($cur);
648 undef $cur; # free memory
652 sub _msg_page_prepare_obuf {
653 my ($eml, $ctx) = @_;
654 my $have_over = !!$ctx->{ibx}->over;
655 my $obfs_ibx = $ctx->{-obfs_ibx};
656 $ctx->{obuf} = \(my $rv = '');
657 my $mids = mids_for_index($eml);
658 my $nr = $ctx->{nr}++;
659 if ($nr) { # unlikely
660 if ($ctx->{chash} eq content_hash($eml)) {
661 warn "W: BUG? @$mids not deduplicated properly\n";
665 "<pre>WARNING: multiple messages have this Message-ID\n</pre><pre>";
667 $ctx->{first_hdr} = $eml->header_obj;
668 $ctx->{chash} = content_hash($eml) if $ctx->{smsg}; # reused MID
669 $rv .= "<pre\nid=b>"; # anchor for body start
671 $ctx->{-upfx} = '../';
672 my @title; # (Subject[0], From[0])
673 for my $v ($eml->header('From')) {
674 my @n = PublicInbox::Address::names($v);
676 $title[1] //= ascii_html(join(', ', @n));
678 obfuscate_addrs($obfs_ibx, $v);
679 obfuscate_addrs($obfs_ibx, $title[1]);
681 $rv .= "From: $v\n" if $v ne '';
683 foreach my $h (qw(To Cc)) {
684 for my $v ($eml->header($h)) {
687 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx;
688 $rv .= "$h: $v\n" if $v ne '';
691 my @subj = $eml->header('Subject');
693 my $v = ascii_html(shift @subj);
694 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx;
696 $rv .= $have_over ? qq(<a\nhref="#r"\nid=t>$v</a>\n) : "$v\n";
698 for $v (@subj) { # multi-Subject message :<
700 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx;
701 $rv .= "Subject: $v\n";
703 } else { # dummy anchor for thread skeleton at bottom of page
704 $rv .= qq(<a\nhref="#r"\nid=t></a>) if $have_over;
705 $title[0] = '(no subject)';
707 for my $v ($eml->header('Date')) {
709 obfuscate_addrs($obfs_ibx, $v) if $obfs_ibx; # possible :P
710 $rv .= qq{Date: $v\n};
712 # [thread overview] link is typically added after Date,
713 # but added after Subject, or even nothing.
715 chop $rv; # drop "\n", or noop if $rv eq ''
716 $rv .= qq{\t<a\nhref="#r">[thread overview]</a>\n};
718 if (!$nr) { # first (and only) message, common case
719 $ctx->{-title_html} = join(' - ', @title);
720 $rv = $ctx->html_top . $rv;
723 $ctx->{-linkify} //= PublicInbox::Linkify->new;
724 if (scalar(@$mids) == 1) { # common case
725 my $mhtml = ascii_html($mids->[0]);
726 $rv .= qq[Message-ID: <$mhtml> (<a href="raw">raw</a>)\n];
728 # X-Alt-Message-ID can happen if a message is injected from
729 # public-inbox-nntpd because of multiple Message-ID headers.
731 for my $h (qw(Message-ID X-Alt-Message-ID)) {
732 $s .= "$h: $_\n" for ($eml->header_raw($h));
734 $ctx->{-linkify}->linkify_mids('..', \$s, 1);
737 $rv .= _parent_headers($ctx, $eml);
742 qq(expand[<a\nhref="T/#u">flat</a>) .
743 qq(|<a\nhref="t/#u">nested</a>] ) .
744 qq(<a\nhref="t.mbox.gz">mbox.gz</a> ) .
745 qq(<a\nhref="t.atom">Atom feed</a>);
748 sub thread_skel ($$$) {
749 my ($skel, $ctx, $hdr) = @_;
750 my $mid = mids($hdr)->[0];
751 my $ibx = $ctx->{ibx};
752 my ($nr, $msgs) = $ibx->over->get_thread($mid);
753 my $parent = in_reply_to($hdr);
754 $$skel .= "\n<b>Thread overview: </b>";
756 if (defined $parent) {
757 $$skel .= SKEL_EXPAND."\n ";
758 $$skel .= ghost_parent('../', $parent) . "\n";
760 $$skel .= "<a\nid=r>[no followups]</a> ".
763 $ctx->{next_msg} = undef;
764 $ctx->{parent_msg} = $parent;
769 $$skel .= '+ messages / '.SKEL_EXPAND.qq! <a\nhref="#b">top</a>\n!;
771 # nb: mutt only shows the first Subject in the index pane
772 # when multiple Subject: headers are present, so we follow suit:
773 my $subj = $hdr->header('Subject') // '';
774 $subj = '(no subject)' if $subj eq '';
776 $ctx->{prev_attr} = '';
777 $ctx->{prev_level} = 0;
778 $ctx->{skel} = $skel;
780 # reduce hash lookups in skel_dump
781 $ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
782 walk_thread(thread_results($ctx, $msgs), $ctx, \&skel_dump);
784 $ctx->{parent_msg} = $parent;
787 sub _parent_headers {
788 my ($ctx, $hdr) = @_;
789 my @irt = $hdr->header_raw('In-Reply-To');
793 $refs = references($hdr);
794 $irt[0] = pop(@$refs) if scalar @$refs;
796 $s .= "In-Reply-To: $_\n" for @irt;
798 # do not display References: if search is present,
799 # we show the thread skeleton at the bottom, instead.
800 if (!$ctx->{ibx}->over) {
801 $refs //= references($hdr);
802 $s .= 'References: <'.join(">\n\t<", @$refs).">\n" if @$refs;
804 $ctx->{-linkify}->linkify_mids('..', \$s); # escapes HTML
810 my ($ctx, $hdr) = @_;
812 my ($related, $skel);
813 my $qry = delete $ctx->{-qry};
814 if ($qry && $ctx->{ibx}->isrch) {
815 my $q = ''; # search for either ancestor or descendent patches
816 for (@{$qry->{dfpre}}, @{$qry->{dfpost}}) {
817 chop if length > 7; # include 1 abbrev "older" patches
820 chop $q; # omit trailing SP
821 local $Text::Wrap::columns = COLS;
822 local $Text::Wrap::huge = 'overflow';
823 $q = wrap('', '', $q);
824 my $rows = ($q =~ tr/\n/\n/) + 1;
829 ><pre>find likely ancestor, descendant, or conflicting patches for <a
830 href=#t>this message</a>:
831 <textarea name=q cols=${\COLS} rows=$rows>$q</textarea>
832 <input type=submit value=search
833 />\t(<a href=${upfx}_/text/help/#search>help</a>)</pre></form>
836 if ($ctx->{ibx}->over) {
837 my $t = ts2str($ctx->{-t_max});
838 my $t_fmt = fmt_ts($ctx->{-t_max});
839 my $fallback = $related ? "\t" : "<a id=related>\t</a>";
841 ${fallback}other threads:[<a
842 href="$upfx?t=$t">~$t_fmt UTC</a>|<a
843 href="$upfx">newest</a>]
846 thread_skel(\$skel, $ctx, $hdr);
851 if (my $n = $ctx->{next_msg}) {
853 $next = "<a\nhref=\"$upfx$n/\"\nrel=next>next</a>";
856 my $par = $ctx->{parent_msg};
861 if (my $p = $ctx->{prev_msg}) {
862 $prev = mid_href($p);
863 if ($p && $par && $p eq $par) {
864 $prev = "<a\nhref=\"$upfx$prev/\"\n" .
865 'rel=prev>prev parent</a>';
868 $prev = "<a\nhref=\"$upfx$prev/\"\n" .
870 $parent = " <a\nhref=\"$u\">parent</a>" if $u;
872 } elsif ($u) { # unlikely
873 $parent = " <a\nhref=\"$u\"\nrel=prev>parent</a>";
875 ${$ctx->{obuf}} .= "<pre>$next $prev$parent ";
876 } else { # unindexed inboxes w/o over
877 ${$ctx->{obuf}} .= '<pre>';
878 $skel = qq( <a\nhref="$upfx">latest</a>);
880 ${$ctx->{obuf}} .= qq(<a\nhref="#R">reply</a>);
881 # $skel may be big for big threads, don't append it to obuf
882 $skel .= '</pre>' . ($related // '');
883 $ctx->zmore($skel .= msg_reply($ctx, $hdr)); # flushes obuf
887 my ($upfx, $mid) = @_;
889 my $href = mid_href($mid);
890 my $html = ascii_html($mid);
891 qq{[parent not found: <<a\nhref="$upfx$href/">$html</a>>]};
896 $level ? INDENT x ($level - 1) : '';
900 my ($ctx, $level, $node, $idx) = @_;
901 ++$ctx->{root_idx} if $level == 0;
902 if ($node->{mid} eq $ctx->{mid}) {
903 $ctx->{found_mid_at} = $ctx->{root_idx};
904 return 0; # stop iterating
909 sub strict_loose_note ($) {
912 " -- strict thread matches above, loose matches on Subject: below --\n";
914 if ($nr > PublicInbox::Over::DEFAULT_LIMIT()) {
916 " -- use mbox.gz link to download all $nr messages --\n";
922 my ($ctx, $msgs) = @_;
923 require PublicInbox::SearchThread;
924 my $rootset = PublicInbox::SearchThread::thread($msgs, \&sort_ds, $ctx);
926 # FIXME: `tid' is broken on --reindex, so that needs to be fixed
927 # and preserved in the future. This bug is hidden by `sid' matches
928 # in get_thread, so we never noticed it until now. And even when
929 # reindexing is fixed, we'll keep this code until a SCHEMA_VERSION
930 # bump since reindexing is expensive and users may not do it
932 # loose threading could've returned too many results,
933 # put the root the message we care about at the top:
934 my $mid = $ctx->{mid};
935 if (defined($mid) && scalar(@$rootset) > 1) {
936 $ctx->{root_idx} = -1;
937 my $nr = scalar @$msgs;
938 walk_thread($rootset, $ctx, \&find_mid_root);
939 my $idx = $ctx->{found_mid_at};
940 if (defined($idx) && $idx != 0) {
941 my $tip = splice(@$rootset, $idx, 1);
942 @$rootset = reverse @$rootset;
943 unshift @$rootset, $tip;
944 $ctx->{sl_note} = strict_loose_note($nr);
952 require PublicInbox::ExtMsg;
953 PublicInbox::ExtMsg::ext_msg($ctx);
957 my ($prev_subj, $subj, $val) = @_;
959 my $omit; # '"' denotes identical text omitted
960 my (@prev_pop, @curr_pop);
961 while (@$prev_subj && @$subj && $subj->[-1] eq $prev_subj->[-1]) {
962 push(@prev_pop, pop(@$prev_subj));
963 push(@curr_pop, pop(@$subj));
966 pop @$subj if @$subj && $subj->[-1] =~ /^re:\s*/i;
967 if (scalar(@curr_pop) == 1) {
969 push @$prev_subj, @prev_pop;
970 push @$subj, @curr_pop;
975 sub skel_dump { # walk_thread callback
976 my ($ctx, $level, $smsg) = @_;
977 $smsg->{blob} or return _skel_ghost($ctx, $level, $smsg);
979 my $skel = $ctx->{skel};
980 my $cur = $ctx->{cur};
981 my $mid = $smsg->{mid};
983 if ($level == 0 && $ctx->{skel_dump_roots}++) {
984 $$skel .= delete($ctx->{sl_note}) || '';
987 my $f = ascii_html(delete $smsg->{from_name});
988 my $obfs_ibx = $ctx->{-obfs_ibx};
989 obfuscate_addrs($obfs_ibx, $f) if $obfs_ibx;
991 my $d = fmt_ts($smsg->{ds});
992 my $unmatched; # if lazy-loaded by SearchThread::Msg::visible()
993 if (exists $ctx->{searchview}) {
994 if (defined(my $pct = $smsg->{pct})) {
995 $d .= (sprintf(' % 2u', $pct) . '%');
1001 $d .= ' ' . indent_for($level) . th_pfx($level);
1003 $ctx->{first_level} ||= $level;
1005 if ($attr ne $ctx->{prev_attr} || $ctx->{prev_level} > $level) {
1006 $ctx->{prev_attr} = $attr;
1008 $ctx->{prev_level} = $level;
1013 $$skel .= "<b>$d<a\nid=r\nhref=\"#t\">".
1014 "$attr [this message]</a></b>\n";
1017 $ctx->{prev_msg} = $mid;
1020 $ctx->{next_msg} ||= $mid;
1023 # Subject is never undef, this mail was loaded from
1024 # our Xapian which would've resulted in '' if it were
1025 # really missing (and Filter rejects empty subjects)
1026 my @subj = split(/ /, subject_normalized($smsg->{subject}));
1027 # remove common suffixes from the subject if it matches the previous,
1028 # so we do not show redundant text at the end.
1029 my $prev_subj = $ctx->{prev_subj} || [];
1030 $ctx->{prev_subj} = [ @subj ];
1031 my $omit = dedupe_subject($prev_subj, \@subj, '" ');
1034 my $subj = join(' ', @subj);
1035 $subj = ascii_html($subj);
1036 obfuscate_addrs($obfs_ibx, $subj) if $obfs_ibx;
1037 $end = "$subj</a> $omit$f\n"
1043 my $mapping = $unmatched ? undef : $ctx->{mapping};
1045 my $map = $mapping->{$mid};
1046 $id = id_compress($mid, 1);
1048 $map->[0] = "$d<a\nhref=\"$m\">$end";
1051 $m = $ctx->{-upfx}.mid_href($mid).'/';
1053 $$skel .= $d . "<a\nhref=\"$m\"$id>" . $end;
1058 my ($ctx, $level, $node) = @_;
1060 my $mid = $node->{mid};
1061 my $d = ' [not found] ';
1062 $d .= ' ' if exists $ctx->{searchview};
1063 $d .= indent_for($level) . th_pfx($level);
1064 my $upfx = $ctx->{-upfx};
1065 my $href = $upfx . mid_href($mid) . '/';
1066 my $html = ascii_html($mid);
1068 my $mapping = $ctx->{mapping};
1069 my $map = $mapping->{$mid} if $mapping;
1071 my $id = id_compress($mid, 1);
1072 $map->[0] = $d . qq{<<a\nhref=#r$id>$html</a>>\n};
1073 $d .= qq{<<a\nhref="$href"\nid=r$id>$html</a>>\n};
1075 $d .= qq{<<a\nhref="$href">$html</a>>\n};
1077 ${$ctx->{skel}} .= $d;
1083 (eval { $a->topmost->{ds} } || 0) <=>
1084 (eval { $b->topmost->{ds} } || 0)
1088 # accumulate recent topics if search is supported
1089 # returns 200 if done, 404 if not
1090 sub acc_topic { # walk_thread callback
1091 my ($ctx, $level, $smsg) = @_;
1092 my $mid = $smsg->{mid};
1093 my $has_blob = $smsg->{blob} // do {
1094 if (my $by_mid = $ctx->{ibx}->smsg_by_mid($mid)) {
1095 %$smsg = (%$smsg, %$by_mid);
1100 my $subj = subject_normalized($smsg->{subject});
1101 $subj = '(no subject)' if $subj eq '';
1102 my $ds = $smsg->{ds};
1103 if ($level == 0) { # new, top-level topic
1104 my $topic = [ $ds, 1, { $subj => $mid }, $subj ];
1105 $ctx->{-cur_topic} = $topic;
1106 push @{$ctx->{order}}, $topic;
1110 # continue existing topic
1111 my $topic = $ctx->{-cur_topic}; # should never be undef
1112 $topic->[0] = $ds if $ds > $topic->[0];
1113 $topic->[1]++; # bump N+ message counter
1114 my $seen = $topic->[2];
1115 if (scalar(@$topic) == 3) { # parent was a ghost
1116 push @$topic, $subj;
1117 } elsif (!defined($seen->{$subj})) {
1118 push @$topic, $level, $subj; # @extra messages
1120 $seen->{$subj} = $mid; # latest for subject
1121 } else { # ghost message
1122 return 1 if $level != 0; # ignore child ghosts
1123 my $topic = $ctx->{-cur_topic} = [ -666, 0, {} ];
1124 push @{$ctx->{order}}, $topic;
1131 my $order = delete $ctx->{order}; # [ ds, subj1, subj2, subj3, ... ]
1133 $ctx->{-html_tip} = '<pre>[No topics in range]</pre>';
1138 my $obfs_ibx = $ctx->{ibx}->{obfuscate} ? $ctx->{ibx} : undef;
1139 if (my $note = delete $ctx->{t_note}) {
1140 push @out, $note; # "messages from ... to ..."
1142 # sort by recency, this allows new posts to "bump" old topics...
1143 foreach my $topic (sort { $b->[0] <=> $a->[0] } @$order) {
1144 my ($ds, $n, $seen, $top_subj, @extra) = @$topic;
1146 next unless defined $top_subj; # ghost topic
1147 my $mid = delete $seen->{$top_subj};
1148 my $href = mid_href($mid);
1149 my $prev_subj = [ split(/ /, $top_subj) ];
1150 $top_subj = ascii_html($top_subj);
1153 # $n isn't the total number of posts on the topic,
1154 # just the number of posts in the current results window
1158 $anchor = '#u'; # top of only message
1160 $n = " ($n+ messages)";
1161 $anchor = '#t'; # thread skeleton
1164 my $s = "<a\nhref=\"$href/T/$anchor\">$top_subj</a>\n" .
1167 my $level = shift @extra;
1168 my $subj = shift @extra; # already normalized
1169 $mid = delete $seen->{$subj};
1170 my @subj = split(/ /, $subj);
1171 my @next_prev = @subj; # full copy
1172 my $omit = dedupe_subject($prev_subj, \@subj, ' "');
1173 $prev_subj = \@next_prev;
1174 $subj = join(' ', @subj);
1175 $subj = ascii_html($subj);
1176 obfuscate_addrs($obfs_ibx, $subj) if $obfs_ibx;
1177 $href = mid_href($mid);
1178 $s .= indent_for($level) . TCHILD;
1179 $s .= qq(<a\nhref="$href/T/#u">$subj</a>$omit\n);
1183 $ctx->{-html_tip} = '<pre>' . join("\n", @out) . '</pre>';
1188 my ($yyyy, $mon, $dd, $hh, $mm, $ss) = unpack('A4A2A2A2A2A2', $_[0]);
1189 timegm($ss || 0, $mm || 0, $hh || 0, $dd, $mon - 1, $yyyy);
1192 sub pagination_footer ($$) {
1193 my ($ctx, $latest) = @_;
1194 my $next = $ctx->{next_page} || '';
1195 my $prev = $ctx->{prev_page} || '';
1196 if ($prev) { # aligned padding for: 'next (older) | '
1197 $next = $next ? "$next | " : ' | ';
1198 $prev .= qq[ | <a\nhref="$latest">latest</a>];
1200 ($next || $prev) ? "<hr><pre id=nav>page: $next$prev</pre>" : '';
1203 sub paginate_recent ($$) {
1204 my ($ctx, $lim) = @_;
1205 my $t = $ctx->{qp}->{t} || '';
1206 my $opts = { limit => $lim };
1207 my ($after, $before);
1209 # Xapian uses '..' but '-' is perhaps friendier to URL linkifiers
1210 # if only $after exists "YYYYMMDD.." because "." could be skipped
1211 # if interpreted as an end-of-sentence
1212 $t =~ s/\A([0-9]{8,14})-// and $after = str2ts($1);
1213 $t =~ /\A([0-9]{8,14})\z/ and $before = str2ts($1);
1215 my $msgs = $ctx->{ibx}->over->recent($opts, $after, $before);
1216 if (defined($after) && scalar(@$msgs) < $lim) {
1217 $after = $before = undef;
1218 $msgs = $ctx->{ibx}->over->recent($opts);
1220 my $more = scalar(@$msgs) == $lim;
1221 my ($newest, $oldest);
1223 $newest = $msgs->[0]->{ts};
1224 $oldest = $msgs->[-1]->{ts};
1225 # if we only had $after, our SQL query in ->recent ordered
1226 if ($newest < $oldest) {
1227 ($oldest, $newest) = ($newest, $oldest);
1228 $more = undef if defined($after) && $after < $oldest;
1230 if (defined($after // $before)) {
1231 my $n = strftime('%Y-%m-%d %H:%M:%S', gmtime($newest));
1232 my $o = strftime('%Y-%m-%d %H:%M:%S', gmtime($oldest));
1233 $ctx->{t_note} = <<EOM;
1234 messages from $o to $n UTC [<a href="#nav">more...</a>]
1236 my $s = ts2str($newest);
1237 $ctx->{prev_page} = qq[<a\nhref="?t=$s-"\nrel=prev>] .
1241 if (defined($oldest) && $more) {
1242 my $s = ts2str($oldest);
1243 $ctx->{next_page} = qq[<a\nhref="?t=$s"\nrel=next>] .
1249 # GET /$INBOX - top-level inbox view for indexed inboxes
1252 my $msgs = paginate_recent($ctx, 200); # 200 is our window
1253 walk_thread(thread_results($ctx, $msgs), $ctx, \&acc_topic) if @$msgs;
1254 html_oneshot($ctx, dump_topics($ctx), pagination_footer($ctx, '.'));
1257 sub thread_adj_level {
1258 my ($ctx, $level) = @_;
1260 my $max = $ctx->{cur_level};
1262 return ('', '') if $max == 0; # flat output
1264 # reset existing lists
1265 my $beg = $max > 1 ? ('</ul></li>' x ($max - 1)) : '';
1266 $ctx->{cur_level} = 0;
1268 } elsif ($level == $max) { # continue existing list
1270 } elsif ($level < $max) {
1271 my $beg = $max > 1 ? ('</ul></li>' x ($max - $level)) : '';
1272 $ctx->{cur_level} = $level;
1273 ("$beg<li>", '</li>');
1274 } else { # ($level > $max) # start a new level
1275 $ctx->{cur_level} = $level;
1276 my $beg = ($max ? '<li>' : '') . '<ul><li>';
1281 sub ghost_index_entry {
1282 my ($ctx, $level, $node) = @_;
1283 my ($beg, $end) = thread_adj_level($ctx, $level);
1284 $beg . '<pre>'. ghost_parent($ctx->{-upfx}, $node->{mid} // '?')