85 lines
2.8 KiB
Go
85 lines
2.8 KiB
Go
// Copyright 2020 The Macaron Authors
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package middleware
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import (
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"net/http"
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"net/url"
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"strings"
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"code.gitea.io/gitea/modules/session"
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"code.gitea.io/gitea/modules/setting"
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)
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// SetRedirectToCookie convenience function to set the RedirectTo cookie consistently
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func SetRedirectToCookie(resp http.ResponseWriter, value string) {
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SetSiteCookie(resp, "redirect_to", value, 0)
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}
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// DeleteRedirectToCookie convenience function to delete most cookies consistently
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func DeleteRedirectToCookie(resp http.ResponseWriter) {
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SetSiteCookie(resp, "redirect_to", "", -1)
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}
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// GetSiteCookie returns given cookie value from request header.
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func GetSiteCookie(req *http.Request, name string) string {
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cookie, err := req.Cookie(name)
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if err != nil {
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return ""
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}
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val, _ := url.QueryUnescape(cookie.Value)
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return val
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}
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// SetSiteCookie returns given cookie value from request header.
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func SetSiteCookie(resp http.ResponseWriter, name, value string, maxAge int) {
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// Previous versions would use a cookie path with a trailing /.
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// These are more specific than cookies without a trailing /, so
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// we need to delete these if they exist.
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deleteLegacySiteCookie(resp, name)
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cookie := &http.Cookie{
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Name: name,
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Value: url.QueryEscape(value),
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MaxAge: maxAge,
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Path: setting.SessionConfig.CookiePath,
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Domain: setting.SessionConfig.Domain,
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Secure: setting.SessionConfig.Secure,
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HttpOnly: true,
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SameSite: setting.SessionConfig.SameSite,
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}
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resp.Header().Add("Set-Cookie", cookie.String())
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}
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// deleteLegacySiteCookie deletes the cookie with the given name at the cookie
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// path with a trailing /, which would unintentionally override the cookie.
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func deleteLegacySiteCookie(resp http.ResponseWriter, name string) {
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if setting.SessionConfig.CookiePath == "" || strings.HasSuffix(setting.SessionConfig.CookiePath, "/") {
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// If the cookie path ends with /, no legacy cookies will take
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// precedence, so do nothing. The exception is that cookies with no
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// path could override other cookies, but it's complicated and we don't
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// currently handle that.
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return
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}
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cookie := &http.Cookie{
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Name: name,
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Value: "",
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MaxAge: -1,
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Path: setting.SessionConfig.CookiePath + "/",
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Domain: setting.SessionConfig.Domain,
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Secure: setting.SessionConfig.Secure,
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HttpOnly: true,
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SameSite: setting.SessionConfig.SameSite,
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}
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resp.Header().Add("Set-Cookie", cookie.String())
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}
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func init() {
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session.BeforeRegenerateSession = append(session.BeforeRegenerateSession, func(resp http.ResponseWriter, _ *http.Request) {
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// Ensure that a cookie with a trailing slash does not take precedence over
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// the cookie written by the middleware.
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deleteLegacySiteCookie(resp, setting.SessionConfig.CookieName)
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})
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}
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