use go 1.12

Signed-off-by: hongming <talonwan@yunify.com>

vendor/github.com/mholt/caddy/caddyhttp/basicauth/setup.go

@@ -0,0 +1,113 @@
+// Copyright 2015 Light Code Labs, LLC
+//
+// 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 basicauth
+
+import (
+	"strings"
+
+	"github.com/mholt/caddy"
+	"github.com/mholt/caddy/caddyhttp/httpserver"
+)
+
+func init() {
+	caddy.RegisterPlugin("basicauth", caddy.Plugin{
+		ServerType: "http",
+		Action:     setup,
+	})
+}
+
+// setup configures a new BasicAuth middleware instance.
+func setup(c *caddy.Controller) error {
+	cfg := httpserver.GetConfig(c)
+	root := cfg.Root
+
+	rules, err := basicAuthParse(c)
+	if err != nil {
+		return err
+	}
+
+	basic := BasicAuth{Rules: rules}
+
+	cfg.AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
+		basic.Next = next
+		basic.SiteRoot = root
+		return basic
+	})
+
+	return nil
+}
+
+func basicAuthParse(c *caddy.Controller) ([]Rule, error) {
+	var rules []Rule
+	cfg := httpserver.GetConfig(c)
+
+	var err error
+	for c.Next() {
+		var rule Rule
+
+		args := c.RemainingArgs()
+
+		switch len(args) {
+		case 2:
+			rule.Username = args[0]
+			if rule.Password, err = passwordMatcher(rule.Username, args[1], cfg.Root); err != nil {
+				return rules, c.Errf("Get password matcher from %s: %v", c.Val(), err)
+			}
+		case 3:
+			rule.Resources = append(rule.Resources, args[0])
+			rule.Username = args[1]
+			if rule.Password, err = passwordMatcher(rule.Username, args[2], cfg.Root); err != nil {
+				return rules, c.Errf("Get password matcher from %s: %v", c.Val(), err)
+			}
+		default:
+			return rules, c.ArgErr()
+		}
+
+		// If nested block is present, process it here
+		for c.NextBlock() {
+			val := c.Val()
+			args = c.RemainingArgs()
+			switch len(args) {
+			case 0:
+				// Assume single argument is path resource
+				rule.Resources = append(rule.Resources, val)
+			case 1:
+				if val == "realm" {
+					if rule.Realm == "" {
+						rule.Realm = strings.Replace(args[0], `"`, `\"`, -1)
+					} else {
+						return rules, c.Errf("\"realm\" subdirective can only be specified once")
+					}
+				} else {
+					return rules, c.Errf("expecting \"realm\", got \"%s\"", val)
+				}
+			default:
+				return rules, c.ArgErr()
+			}
+		}
+
+		rules = append(rules, rule)
+	}
+
+	return rules, nil
+}
+
+func passwordMatcher(username, passw, siteRoot string) (PasswordMatcher, error) {
+	htpasswdPrefix := "htpasswd="
+	if !strings.HasPrefix(passw, htpasswdPrefix) {
+		return PlainMatcher(passw), nil
+	}
+	return GetHtpasswdMatcher(passw[len(htpasswdPrefix):], username, siteRoot)
+}