Fix recovery middleware to render gitea style page. (#13857)

* Some changes to fix recovery

* Move Recovery to middlewares

* Remove trace code

* Fix lint

* add session middleware and remove dependent on macaron for sso

* Fix panic 500 page rendering

* Fix bugs

* Fix fmt

* Fix vendor

* recover unnecessary change

* Fix lint and addd some comments about the copied codes.

* Use util.StatDir instead of com.StatDir

Co-authored-by: 6543 <6543@obermui.de>

modules/middlewares/cookie.go

@@ -0,0 +1,104 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package middlewares
+
+import (
+	"net/http"
+	"net/url"
+	"time"
+
+	"code.gitea.io/gitea/modules/setting"
+)
+
+// NewCookie creates a cookie
+func NewCookie(name, value string, maxAge int) *http.Cookie {
+	return &http.Cookie{
+		Name:     name,
+		Value:    value,
+		HttpOnly: true,
+		Path:     setting.SessionConfig.CookiePath,
+		Domain:   setting.SessionConfig.Domain,
+		MaxAge:   maxAge,
+		Secure:   setting.SessionConfig.Secure,
+	}
+}
+
+// SetCookie set the cookies
+// TODO: Copied from gitea.com/macaron/macaron and should be improved after macaron removed.
+func SetCookie(resp http.ResponseWriter, name string, value string, others ...interface{}) {
+	cookie := http.Cookie{}
+	cookie.Name = name
+	cookie.Value = url.QueryEscape(value)
+
+	if len(others) > 0 {
+		switch v := others[0].(type) {
+		case int:
+			cookie.MaxAge = v
+		case int64:
+			cookie.MaxAge = int(v)
+		case int32:
+			cookie.MaxAge = int(v)
+		case func(*http.Cookie):
+			v(&cookie)
+		}
+	}
+
+	cookie.Path = "/"
+	if len(others) > 1 {
+		if v, ok := others[1].(string); ok && len(v) > 0 {
+			cookie.Path = v
+		} else if v, ok := others[1].(func(*http.Cookie)); ok {
+			v(&cookie)
+		}
+	}
+
+	if len(others) > 2 {
+		if v, ok := others[2].(string); ok && len(v) > 0 {
+			cookie.Domain = v
+		} else if v, ok := others[1].(func(*http.Cookie)); ok {
+			v(&cookie)
+		}
+	}
+
+	if len(others) > 3 {
+		switch v := others[3].(type) {
+		case bool:
+			cookie.Secure = v
+		case func(*http.Cookie):
+			v(&cookie)
+		default:
+			if others[3] != nil {
+				cookie.Secure = true
+			}
+		}
+	}
+
+	if len(others) > 4 {
+		if v, ok := others[4].(bool); ok && v {
+			cookie.HttpOnly = true
+		} else if v, ok := others[1].(func(*http.Cookie)); ok {
+			v(&cookie)
+		}
+	}
+
+	if len(others) > 5 {
+		if v, ok := others[5].(time.Time); ok {
+			cookie.Expires = v
+			cookie.RawExpires = v.Format(time.UnixDate)
+		} else if v, ok := others[1].(func(*http.Cookie)); ok {
+			v(&cookie)
+		}
+	}
+
+	if len(others) > 6 {
+		for _, other := range others[6:] {
+			if v, ok := other.(func(*http.Cookie)); ok {
+				v(&cookie)
+			}
+		}
+	}
+
+	resp.Header().Add("Set-Cookie", cookie.String())
+}