[PATCH 2/2] lei index+import: reject keywords from R/O IMAP

[Eric Wong <e@80x24.org>]

Since users can't set IMAP flags in read-only IMAP folders,
we won't clobber local flags when importing from IMAP.  This
also enables the local_blob fallback used for lei-index to
be used for index deduplication.
---
 lib/PublicInbox/LeiStore.pm  |  3 ++-
 lib/PublicInbox/NetReader.pm | 11 ++++++-----
 t/lei-index.t                | 13 +++++++++++++
 3 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/lib/PublicInbox/LeiStore.pm b/lib/PublicInbox/LeiStore.pm
index 5446873e..f978288a 100644
--- a/lib/PublicInbox/LeiStore.pm
+++ b/lib/PublicInbox/LeiStore.pm
@@ -151,7 +151,8 @@ sub _docids_for ($$) {
 			my $oid = $cur->{blob};
 			my $docid = $cur->{num};
 			my $bref = $im ? $im->cat_blob($oid) : undef;
-			$bref //= $eidx->git->cat_file($oid) // do {
+			$bref //= $eidx->git->cat_file($oid) //
+				_lms_rw($self)->local_blob($oid, 1) // do {
 				warn "W: $oid (#$docid) <$mid> not found\n";
 				next;
 			};
diff --git a/lib/PublicInbox/NetReader.pm b/lib/PublicInbox/NetReader.pm
index 30784199..0c2288d8 100644
--- a/lib/PublicInbox/NetReader.pm
+++ b/lib/PublicInbox/NetReader.pm
@@ -420,7 +420,8 @@ sub _imap_do_msg ($$$$$) {
 	my ($self, $uri, $uid, $raw, $flags) = @_;
 	# our target audience expects LF-only, save storage
 	$$raw =~ s/\r\n/\n/sg;
-	my $kw = flags2kw($self, $uri, $uid, $flags) // return;
+	my $kw = defined($flags) ?
+		(flags2kw($self, $uri, $uid, $flags) // return) : undef;
 	my ($eml_cb, @args) = @{$self->{eml_each}};
 	$eml_cb->($uri, $uid, $kw, PublicInbox::Eml->new($raw), @args);
 }
@@ -537,8 +538,8 @@ E: $uri strangely, UIDVALIDLITY matches ($l_uidval)
 EOF
 	$mic->Uid(1); # the default, we hope
 	my $err;
-	if (!defined($single_uid) && $self->{each_old} &&
-				perm_fl_ok($perm_fl)) {
+	my $use_fl = perm_fl_ok($perm_fl);
+	if (!defined($single_uid) && $self->{each_old} && $use_fl) {
 		$err = each_old_flags($self, $mic, $uri, $l_uid);
 		return $err if $err;
 	}
@@ -593,8 +594,8 @@ EOF
 				# messages get deleted, so holes appear
 				my $per_uid = delete $r->{$uid} // next;
 				my $raw = delete($per_uid->{$key}) // next;
-				_imap_do_msg($self, $uri, $uid, \$raw,
-						$per_uid->{FLAGS});
+				my $fl = $use_fl ? $per_uid->{FLAGS} : undef;
+				_imap_do_msg($self, $uri, $uid, \$raw, $fl);
 				$last_uid = $uid;
 				last if $self->{quit};
 			}
diff --git a/t/lei-index.t b/t/lei-index.t
index c142e79c..eeda5196 100644
--- a/t/lei-index.t
+++ b/t/lei-index.t
@@ -80,6 +80,19 @@ test_lei({ tmpdir => $tmpdir }, sub {
 	lei_ok('index', "nntp://$nntp_host_port/t.v2");
 	lei_ok('index', "imap://$imap_host_port/t.v2.0");
 	is_deeply([xqx($all_obj)], \@objs, 'no new objects from NNTP+IMAP');
+
+	lei_ok qw(q m:multipart-html-sucks@11);
+	$res_a = json_utf8->decode($lei_out)->[0];
+	is_deeply($res_a->{'kw'}, ['seen'],
+		'keywords still set after NNTP + IMAP import');
+
+	# ensure import works after lms->local_blob fallback in lei/store
+	lei_ok('import', 't/mda-mime.eml');
+	lei_ok qw(q m:multipart-html-sucks@11);
+	$res_b = json_utf8->decode($lei_out)->[0];
+	my $t = xqx(['git', "--git-dir=$store_path/ALL.git",
+			qw(cat-file -t), $res_b->{blob}]);
+	is($t, "blob\n", 'got blob');
 });
 
 done_testing;