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-rw-r--r--lib/PublicInbox/Inbox.pm11
-rw-r--r--lib/PublicInbox/WWW.pm23
-rw-r--r--t/plack.t18
3 files changed, 35 insertions, 17 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 ($$;$) {
diff --git a/lib/PublicInbox/WWW.pm b/lib/PublicInbox/WWW.pm
index 7bd29732..24e24f1e 100644
--- a/lib/PublicInbox/WWW.pm
+++ b/lib/PublicInbox/WWW.pm
@@ -169,14 +169,15 @@ sub invalid_inbox_mid {
         return $ret if $ret;
 
         $ctx->{mid} = $mid;
-        if ($mid =~ /\A[a-f0-9]{40}\z/) {
-                # this is horiffically wasteful for legacy URLs:
-                if ($mid = mid2blob($ctx)) {
-                        require Email::Simple;
-                        use PublicInbox::MID qw/mid_clean/;
-                        my $s = Email::Simple->new($mid);
-                        $ctx->{mid} = mid_clean($s->header('Message-ID'));
-                }
+        my $ibx = $ctx->{-inbox};
+        if ($mid =~ m!\A([a-f0-9]{2})([a-f0-9]{38})\z!) {
+                my ($x2, $x38) = ($1, $2);
+                # this is horrifically wasteful for legacy URLs:
+                my $str = $ctx->{-inbox}->msg_by_path("$x2/$x38") or return;
+                require Email::Simple;
+                my $s = Email::Simple->new($str);
+                $mid = PublicInbox::MID::mid_clean($s->header('Message-ID'));
+                return r301($ctx, $inbox, $mid);
         }
         undef;
 }
@@ -208,12 +209,6 @@ sub get_index {
         }
 }
 
-# just returns a string ref for the blob in the current ctx
-sub mid2blob {
-        my ($ctx) = @_;
-        $ctx->{-inbox}->msg_by_mid($ctx->{mid});
-}
-
 # /$INBOX/$MESSAGE_ID/raw                    -> raw mbox
 sub get_mid_txt {
         my ($ctx) = @_;
diff --git a/t/plack.t b/t/plack.t
index 26b03660..7eb7d7f2 100644
--- a/t/plack.t
+++ b/t/plack.t
@@ -18,6 +18,7 @@ foreach my $mod (@mods) {
 }
 use_ok 'PublicInbox::Import';
 use_ok 'PublicInbox::Git';
+my @ls;
 
 foreach my $mod (@mods) { use_ok $mod; }
 {
@@ -55,6 +56,8 @@ EOF
                 $im->done;
                 my $rev = `git --git-dir="$maindir" rev-list HEAD`;
                 like($rev, qr/\A[a-f0-9]{40}/, "good revision committed");
+                @ls = `git --git-dir="$maindir" ls-tree -r --name-only HEAD`;
+                chomp @ls;
         }
         my $app = eval {
                 local $ENV{PI_CONFIG} = $pi_config;
@@ -198,6 +201,21 @@ EOF
                              "$sfx redirected to /mbox.gz");
                 });
         }
+        test_psgi($app, sub {
+                my ($cb) = @_;
+                # for a while, we used to support /$INBOX/$X40/
+                # when we "compressed" long Message-IDs to SHA-1
+                # Now we're stuck supporting them forever :<
+                foreach my $path (@ls) {
+                        $path =~ tr!/!!d;
+                        my $from = "http://example.com/test/$path/";
+                        my $res = $cb->(GET($from));
+                        is(301, $res->code, 'is permanent redirect');
+                        like($res->header('Location'),
+                                qr!/test/blah\@example\.com/!,
+                                'redirect from x40 MIDs works');
+                }
+        });
 }
 
 done_testing();