hval: implement common UI for protocol-relative URLs

This allows users to avoid HTTPS -> HTTP downgrade warnings,
but we will also avoid encouraging them towards HTTPS, for now.

IMHO: the CA system gives a false sense of security,
TLS libraries (e.g. OpenSSL) can introduce new bugs and
problems (even to attack clients), and TLS libraries
also eats memory on cheap servers.

1 files changed, 5 insertions, 0 deletions

diff --git a/lib/PublicInbox/Hval.pm b/lib/PublicInbox/Hval.pm
index d295f5ce..a455884f 100644
--- a/lib/PublicInbox/Hval.pm
+++ b/lib/PublicInbox/Hval.pm
@@ -69,4 +69,9 @@ sub raw {
         }
 }
 
+sub prurl {
+        my ($env, $u) = @_;
+        index($u, '//') == 0 ? "$env->{'psgi.url_scheme'}:$u" : $u;
+}
+
 1;