support protocol-relative URLs in publicinbox.$LISTNAME.url

All URL generation in dynamic HTTP pages should be capable of
generating "https" or "http" URLs depending on the user's
preference.

diff --git a/lib/PublicInbox/ExtMsg.pm b/lib/PublicInbox/ExtMsg.pm
index 912a675d1ddc5c66c163e4a682a7fbc3c752fb64..6356c3244ef14b414c00fe1ab7cc4e23d4ea41ce 100644 (file)
--- a/lib/PublicInbox/ExtMsg.pm
+++ b/lib/PublicInbox/ExtMsg.pm
@@ -26,6 +26,8 @@ sub ext_msg {
        my $pi_config = $ctx->{pi_config};
        my $listname = $ctx->{listname};
        my $mid = $ctx->{mid};
+       my $cgi = $ctx->{cgi};
+       my $env = $cgi->{env};
 
        eval { require PublicInbox::Search };
        my $have_xap = $@ ? 0 : 1;
@@ -43,6 +45,7 @@ sub ext_msg {
                defined $url or next;
 
                $url =~ s!/+\z!!;
+               $url = PublicInbox::Hval::prurl($env, $url);
 
                # try to find the URL with Xapian to avoid forking
                if ($have_xap) {
@@ -85,7 +88,6 @@ sub ext_msg {
 
        eval { require PublicInbox::Msgmap };
        my $have_mm = $@ ? 0 : 1;
-       my $cgi = $ctx->{cgi};
        my $base_url = $cgi->base->as_string;
        if ($have_mm) {
                my $tmp_mid = $mid;
@@ -137,7 +139,6 @@ again:
        if (@EXT_URL && index($mid, '@') >= 0) {
                $code = 300;
                $s .= "\nPerhaps try an external site:\n\n";
-               my $env = $cgi->{env};
                foreach my $url (@EXT_URL) {
                        my $u = PublicInbox::Hval::prurl($env, $url);
                        my $r = sprintf($u, $href);