Initial QSfera import

Server/vendor/github.com/libregraph/lico/oidc/provider/utils.go

@@ -0,0 +1,85 @@
+/*
+ * Copyright 2017-2019 Kopano and its licensors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package provider
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+var (
+	farPastExpiryTime = time.Unix(0, 0)
+)
+
+func uniqueStrings(s []string) []string {
+	var res []string
+	m := make(map[string]bool)
+	for _, s := range s {
+		if _, ok := m[s]; ok {
+			continue
+		}
+		m[s] = true
+		res = append(res, s)
+	}
+
+	return res
+}
+
+func getRequestURL(req *http.Request, isTrustedSource bool) *url.URL {
+	u, _ := url.Parse(req.URL.String())
+
+	if isTrustedSource {
+		// Look at proxy injected values to rewrite URLs if trusted.
+		for {
+			prefix := req.Header.Get("X-Forwarded-Prefix")
+			if prefix != "" {
+				u.Path = fmt.Sprintf("%s%s", prefix, u.Path)
+				break
+			}
+			replaced := req.Header.Get("X-Replaced-Path")
+			if replaced != "" {
+				u.Path = replaced
+				break
+			}
+
+			break
+		}
+	}
+
+	return u
+}
+
+func addResponseHeaders(header http.Header) {
+	header.Set("Cache-Control", "no-cache, no-store, must-revalidate")
+	header.Set("Pragma", "no-cache")
+	header.Set("X-Content-Type-Options", "nosniff")
+	header.Set("Referrer-Policy", "origin")
+}
+
+func makeArrayFromBoolMap(m map[string]bool) []string {
+	result := []string{}
+	for k, v := range m {
+		if v {
+			result = append(result, k)
+		}
+	}
+
+	return result
+}