X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/8cdbe23435d6a027d25c106c00ba34665fd54ed1..669a5f5ecc0d50daf96d8dc2af219c94c8625fb4:/IkiWiki/CGI.pm

diff --git a/IkiWiki/CGI.pm b/IkiWiki/CGI.pm
index 5baa6c179..cb83319e6 100644
--- a/IkiWiki/CGI.pm
+++ b/IkiWiki/CGI.pm
@@ -110,11 +110,23 @@ sub decode_cgi_utf8 ($) {
 	}
 }
 
+sub safe_decode_utf8 ($) {
+    my $octets = shift;
+    # call decode_utf8 on >= 5.20 only if it's not already decoded,
+    # otherwise it balks, on < 5.20, always call it
+    if ($] < 5.02 || !Encode::is_utf8($octets)) {
+        return decode_utf8($octets);
+    }
+    else {
+        return $octets;
+    }
+}
+
 sub decode_form_utf8 ($) {
 	if ($] >= 5.01) {
 		my $form = shift;
 		foreach my $f ($form->field) {
-			my @value=map { decode_utf8($_) } $form->field($f);
+			my @value=map { safe_decode_utf8($_) } $form->field($f);
 			$form->field(name  => $f,
 			             value => \@value,
 		                     force => 1,
@@ -351,7 +363,8 @@ sub cgi_getsession ($) {
 			{ FileName => "$config{wikistatedir}/sessions.db" })
 	};
 	if (! $session || $@) {
-		error($@." ".CGI::Session->errstr());
+		my $error = $@;
+		error($error." ".CGI::Session->errstr());
 	}
 	
 	umask($oldmask);