# Copyright (C) 2015-2021 all contributors # License: AGPL-3.0+ # # Displays search results for the web interface package PublicInbox::SearchView; use strict; use v5.10.1; use List::Util qw(min max); use URI::Escape qw(uri_unescape); use PublicInbox::Smsg; use PublicInbox::Hval qw(ascii_html obfuscate_addrs mid_href fmt_ts); use PublicInbox::View; use PublicInbox::WwwAtomStream; use PublicInbox::WwwStream qw(html_oneshot); use PublicInbox::SearchThread; use PublicInbox::SearchQuery; use PublicInbox::Search qw(get_pct); my %rmap_inc; sub mbox_results { my ($ctx) = @_; my $q = PublicInbox::SearchQuery->new($ctx->{qp}); if ($ctx->{env}->{'psgi.input'}->read(my $buf, 3)) { $q->{t} = 1 if $buf =~ /\Ax=[^0]/; } require PublicInbox::Mbox; $q->{x} eq 'm' ? PublicInbox::Mbox::mbox_all($ctx, $q) : sres_top_html($ctx); } sub sres_top_html { my ($ctx) = @_; my $srch = $ctx->{ibx}->isrch or return PublicInbox::WWW::need($ctx, 'Search'); my $q = PublicInbox::SearchQuery->new($ctx->{qp}); my $x = $q->{x}; my $query = $q->{'q'}; my $o = $q->{o}; my $asc; if ($o < 0) { $asc = 1; $o = -($o + 1); # so [-1] is the last element, like Perl lists } my $code = 200; # double the limit for expanded views: my $opts = { limit => $q->{l}, offset => $o, relevance => $q->{r}, threads => $q->{t}, asc => $asc, }; my ($mset, $total, $err, $html); retry: eval { $mset = $srch->mset($query, $opts); $total = $mset->get_matches_estimated; }; $err = $@; ctx_prepare($q, $ctx); if ($err) { $code = 400; $html = '
'.err_txt($ctx, $err).'

'; } elsif ($total == 0) { if (defined($ctx->{-uxs_retried})) { # undo retry damage: $q->{'q'} = $ctx->{-uxs_retried}; } elsif (index($q->{'q'}, '%') >= 0) { $ctx->{-uxs_retried} = $q->{'q'}; $q->{'q'} = uri_unescape($q->{'q'}); goto retry; } $code = 404; $html = "
\n[No results found]

"; } else { return adump($_[0], $mset, $q, $ctx) if $x eq 'A'; $ctx->{-html_tip} = search_nav_top($mset, $q, $ctx); return mset_thread($ctx, $mset, $q) if $x eq 't'; mset_summary($ctx, $mset, $q); # appends to {-html_tip} $html = ''; } html_oneshot($ctx, $code); } # display non-nested search results similar to what users expect from # regular WWW search engines: sub mset_summary { my ($ctx, $mset, $q) = @_; my $total = $mset->get_matches_estimated; my $pad = length("$total"); my $pfx = ' ' x $pad; my $res = \($ctx->{-html_tip}); my $ibx = $ctx->{ibx}; my $obfs_ibx = $ibx->{obfuscate} ? $ibx : undef; my @nums = @{$ibx->isrch->mset_to_artnums($mset)}; my %num2msg = map { $_->{num} => $_ } @{$ibx->over->get_all(@nums)}; my ($min, $max); foreach my $m ($mset->items) { my $rank = sprintf("%${pad}d", $m->get_rank + 1); my $pct = get_pct($m); my $num = shift @nums; my $smsg = delete($num2msg{$num}) or do { eval { $m = "$m $num expired\n"; $ctx->{env}->{'psgi.errors'}->print($m); }; next; }; $ctx->{-t_max} //= $smsg->{ts}; # only when sorting by relevance, ->items is always # ordered descending: $max //= $pct; $min = $pct; my $s = ascii_html($smsg->{subject}); my $f = ascii_html($smsg->{from_name}); if ($obfs_ibx) { obfuscate_addrs($obfs_ibx, $s); obfuscate_addrs($obfs_ibx, $f); } my $date = fmt_ts($smsg->{ds}); my $mid = mid_href($smsg->{mid}); $s = '(no subject)' if $s eq ''; $$res .= qq{$rank. }. $s . "\n"; $$res .= "$pfx - by $f @ $date UTC [$pct%]\n\n"; } if ($q->{r}) { # for descriptions in search_nav_bot $q->{-min_pct} = $min; $q->{-max_pct} = $max; } $$res .= search_nav_bot($mset, $q); undef; } # shorten "/full/path/to/Foo/Bar.pm" to "Foo/Bar.pm" so error # messages don't reveal FS layout info in case people use non-standard # installation paths sub path2inc ($) { my $full = $_[0]; if (my $short = $rmap_inc{$full}) { return $short; } elsif (!scalar(keys %rmap_inc) && -e $full) { %rmap_inc = map {; "$INC{$_}" => $_ } keys %INC; # fall back to basename as last resort $rmap_inc{$full} // (split('/', $full))[-1]; } else { $full; } } sub err_txt { my ($ctx, $err) = @_; my $u = $ctx->{ibx}->base_url($ctx->{env}) . '_/text/help/'; $err =~ s/^\s*Exception:\s*//; # bad word to show users :P $err =~ s!(\S+)!path2inc($1)!sge; $err = ascii_html($err); "\nBad query: $err\n" . qq{See $u for help on using search}; } sub search_nav_top { my ($mset, $q, $ctx) = @_; my $m = $q->qs_html(x => 'm', r => undef, t => undef); my $rv = qq{
};
	my $initial_q = $ctx->{-uxs_retried};
	if (defined $initial_q) {
		my $rewritten = $q->{'q'};
		utf8::decode($initial_q);
		utf8::decode($rewritten);
		$initial_q = ascii_html($initial_q);
		$rewritten = ascii_html($rewritten);
		$rv .= " Warning: Initial query:\n $initial_q\n";
		$rv .= " returned no results, used:\n";
		$rv .= " $rewritten\n instead\n\n";
	}

	$rv .= 'Search results ordered by [';
	if ($q->{r}) {
		my $d = $q->qs_html(r => 0);
		$rv .= qq{date|relevance};
	} else {
		my $d = $q->qs_html(r => 1);
		$rv .= qq{date|relevance};
	}

	$rv .= ']  view[';

	my $x = $q->{x};
	if ($x eq '') {
		my $t = $q->qs_html(x => 't');
		$rv .= qq{summary|nested}
	} elsif ($q->{x} eq 't') {
		my $s = $q->qs_html(x => '');
		$rv .= qq{summary|nested};
	}
	my $A = $q->qs_html(x => 'A', r => undef);
	$rv .= qq{|Atom feed]};
	if ($ctx->{ibx}->isrch->has_threadid) {
		$rv .= qq{\n\t\t\tdownload mbox.gz: } .
			# we set name=z w/o using it since it seems required for
			# lynx (but works fine for w3m).
			qq{} .
			qq{|};
	} else { # BOFH needs to --reindex
		$rv .= qq{\n\t\t\t\t\t\tdownload: } .
			qq{}
	}
	$rv .= qq{
};
}

sub search_nav_bot {
	my ($mset, $q) = @_;
	my $total = $mset->get_matches_estimated;
	my $l = $q->{l};
	my $rv = '

';
	my $o = $q->{o};
	my $off = $o < 0 ? -($o + 1) : $o;
	my $end = $off + $mset->size;
	my $beg = $off + 1;

	if ($beg <= $end) {
		my $approx = $end == $total ? '' : '~';
		$rv .= "Results $beg-$end of $approx$total";
	} else {
		$rv .= "No more results, only $total";
	}
	my ($next, $join, $prev, $nd, $pd);

	if ($o >= 0) { # sort descending
		my $n = $o + $l;
		if ($n < $total) {
			$next = $q->qs_html(o => $n, l => $l);
			$nd = $q->{r} ? "[<= $q->{-min_pct}%]" : '(older)';
		}
		if ($o > 0) {
			$join = $n < $total ? ' | ' : "\t";
			my $p = $o - $l;
			$prev = $q->qs_html(o => ($p > 0 ? $p : 0));
			$pd = $q->{r} ? "[>= $q->{-max_pct}%]" : '(newer)';
		}
	} else { # o < 0, sort ascending
		my $n = $o - $l;

		if (-$n < $total) {
			$next = $q->qs_html(o => $n, l => $l);
			$nd = $q->{r} ? "[<= $q->{-min_pct}%]" : '(newer)';
		}
		if ($o < -1) {
			$join = -$n < $total ? ' | ' : "\t";
			my $p = $o + $l;
			$prev = $q->qs_html(o => ($p < 0 ? $p : 0));
			$pd = $q->{r} ? "[>= $q->{-max_pct}%]" : '(older)';
		}
	}

	$rv .= qq{  next $nd} if $next;
	$rv .= $join if $join;
	$rv .= qq{prev $pd} if $prev;

	my $rev = $q->qs_html(o => $o < 0 ? 0 : -1);
	$rv .= qq{ | reverse
}; } sub sort_relevance { [ sort { (eval { $b->topmost->{pct} } // 0) <=> (eval { $a->topmost->{pct} } // 0) } @{$_[0]} ] } sub mset_thread { my ($ctx, $mset, $q) = @_; my $ibx = $ctx->{ibx}; my @pct = map { get_pct($_) } $mset->items; my $msgs = $ibx->isrch->mset_to_smsg($ibx, $mset); my $i = 0; $_->{pct} = $pct[$i++] for @$msgs; my $r = $q->{r}; if ($r) { # for descriptions in search_nav_bot $q->{-min_pct} = min(@pct); $q->{-max_pct} = max(@pct); } my $rootset = PublicInbox::SearchThread::thread($msgs, $r ? \&sort_relevance : \&PublicInbox::View::sort_ds, $ctx); my $skel = search_nav_bot($mset, $q). "
";
	$ctx->{-upfx} = '';
	$ctx->{anchor_idx} = 1;
	$ctx->{cur_level} = 0;
	$ctx->{skel} = \$skel;
	$ctx->{mapping} = {};
	$ctx->{searchview} = 1;
	$ctx->{prev_attr} = '';
	$ctx->{prev_level} = 0;
	$ctx->{s_nr} = scalar(@$msgs).'+ results';

	# reduce hash lookups in skel_dump
	$ctx->{-obfs_ibx} = $ibx->{obfuscate} ? $ibx : undef;
	PublicInbox::View::walk_thread($rootset, $ctx,
		\&PublicInbox::View::pre_thread);

	# link $INBOX_DIR/description text to "recent" view around
	# the newest message in this result set:
	$ctx->{-t_max} = max(map { delete $_->{ts} } @$msgs);

	@$msgs = reverse @$msgs if $r;
	$ctx->{msgs} = $msgs;
	PublicInbox::WwwStream::aresponse($ctx, 200, \&mset_thread_i);
}

# callback for PublicInbox::WwwStream::getline
sub mset_thread_i {
	my ($ctx, $eml) = @_;
	$ctx->zmore($ctx->html_top) if exists $ctx->{-html_tip};
	$eml and return PublicInbox::View::eml_entry($ctx, $eml);
	my $smsg = shift @{$ctx->{msgs}} or
		$ctx->zmore(${delete($ctx->{skel})});
	$smsg;
}

sub ctx_prepare {
	my ($q, $ctx) = @_;
	my $qh = $q->{'q'};
	utf8::decode($qh);
	$qh = ascii_html($qh);
	$ctx->{-q_value_html} = $qh;
	$ctx->{-atom} = '?'.$q->qs_html(x => 'A', r => undef);
	$ctx->{-title_html} = "$qh - search results";
	my $extra = '';
	$extra .= qq{} if $q->{r};
	if (my $x = $q->{x}) {
		$x = ascii_html($x);
		$extra .= qq{};
	}
	$ctx->{-extra_form_html} = $extra;
}

sub adump {
	my ($cb, $mset, $q, $ctx) = @_;
	$ctx->{ids} = $ctx->{ibx}->isrch->mset_to_artnums($mset);
	$ctx->{search_query} = $q; # used by WwwAtomStream::atom_header
	PublicInbox::WwwAtomStream->response($ctx, 200, \&adump_i);
}

# callback for PublicInbox::WwwAtomStream::getline
sub adump_i {
	my ($ctx) = @_;
	while (my $num = shift @{$ctx->{ids}}) {
		my $smsg = eval { $ctx->{ibx}->over->get_art($num) } or next;
		return $smsg;
	}
}

1;