Move OpenID pretty-printing from openid plugin to core

On various sites I have two IkiWiki instances running from the same
repository: one accessible via http and only accepting openid logins,
and one accessible via authenticated https and only accepting httpauth.
The https version should still pretty-print OpenIDs seen in git history,
even though it does not itself accept OpenID logins.

1 files changed, 35 insertions, 0 deletions

diff --git a/IkiWiki.pm b/IkiWiki.pm
index a0a61ac64..0cb3bf143 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -1063,6 +1063,41 @@ sub htmllink ($$$;@) {
 	return "<a href=\"$bestlink\"@attrs>$linktext</a>";
 }
 
+sub openiduser ($) {
+	my $user=shift;
+
+	if ($user =~ m!^https?://! &&
+	    eval q{use Net::OpenID::VerifiedIdentity; 1} && !$@) {
+		my $display;
+
+		if (Net::OpenID::VerifiedIdentity->can("DisplayOfURL")) {
+			# this works in at least 2.x
+			$display = Net::OpenID::VerifiedIdentity::DisplayOfURL($user);
+		}
+		else {
+			# this only works in 1.x
+			my $oid=Net::OpenID::VerifiedIdentity->new(identity => $user);
+			$display=$oid->display;
+		}
+
+		# Convert "user.somehost.com" to "user [somehost.com]"
+		# (also "user.somehost.co.uk")
+		if ($display !~ /\[/) {
+			$display=~s/^([-a-zA-Z0-9]+?)\.([-.a-zA-Z0-9]+\.[a-z]+)$/$1 [$2]/;
+		}
+		# Convert "http://somehost.com/user" to "user [somehost.com]".
+		# (also "https://somehost.com/user/")
+		if ($display !~ /\[/) {
+			$display=~s/^https?:\/\/(.+)\/([^\/]+)\/?$/$2 [$1]/;
+		}
+		$display=~s!^https?://!!; # make sure this is removed
+		eval q{use CGI 'escapeHTML'};
+		error($@) if $@;
+		return escapeHTML($display);
+	}
+	return;
+}
+
 sub userlink ($) {
 	my $user=shift;