www: cleanup expensive fallback for legacy URLs

Back in the day, we compressed long Message-IDs to SHA-1
hexdigests for the URL.  This now redirects to a 301 in
the hopes we can remove these checks some day to reduce
overhead.

1 files changed, 8 insertions, 3 deletions

diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 01aa500c..265360d9 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -293,13 +293,18 @@ sub path_check {
         git($self)->check('HEAD:'.$path);
 }
 
+sub mid2num($$) {
+        my ($self, $mid) = @_;
+        my $mm = mm($self) or return;
+        $mm->num_for($mid);
+}
+
 sub smsg_by_mid ($$) {
         my ($self, $mid) = @_;
         my $srch = search($self) or return;
         # favor the Message-ID we used for the NNTP article number:
-        my $mm = mm($self) or return;
-        my $num = $mm->num_for($mid);
-        $srch->lookup_article($num);
+        my $num = mid2num($self, $mid);
+        defined $num ? $srch->lookup_article($num) : undef;
 }
 
 sub msg_by_mid ($$;$) {