308 lines
9.6 KiB
Go
308 lines
9.6 KiB
Go
// This file is part of the happyDomain (R) project.
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// Copyright (c) 2020-2024 happyDomain
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// Authors: Pierre-Olivier Mercier, et al.
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//
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// This program is offered under a commercial and under the AGPL license.
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// For commercial licensing, contact us at <contact@happydomain.org>.
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//
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// For AGPL licensing:
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package web
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import (
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"bytes"
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"encoding/json"
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"flag"
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"io"
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"log"
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"net/http"
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"net/url"
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"path"
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"strings"
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"text/template"
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"github.com/gin-gonic/gin"
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"git.happydns.org/happyDomain/model"
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)
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var (
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CustomHeadHTML = ""
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CustomBodyHTML = ""
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HideVoxPeople = false
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MsgHeaderColor = "danger"
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MsgHeaderText = ""
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)
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func init() {
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flag.StringVar(&CustomHeadHTML, "custom-head-html", CustomHeadHTML, "Add custom HTML right before </head>")
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flag.StringVar(&CustomBodyHTML, "custom-body-html", CustomBodyHTML, "Add custom HTML right before </body>")
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flag.BoolVar(&HideVoxPeople, "hide-feedback-button", HideVoxPeople, "Hide the icon on page that permit to give feedback")
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flag.StringVar(&MsgHeaderText, "msg-header-text", MsgHeaderText, "Custom message banner to add at the top of the app")
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flag.StringVar(&MsgHeaderColor, "msg-header-color", MsgHeaderColor, "Background color of the banner added at the top of the app")
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}
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func DeclareRoutes(cfg *happydns.Options, router *gin.RouterGroup, captchaVerifier happydns.CaptchaVerifier) {
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appConfig := map[string]any{}
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if cfg.DisableProviders {
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appConfig["disable_providers"] = true
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}
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if cfg.DisableRegistration {
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appConfig["disable_registration"] = true
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}
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if cfg.DisableEmbeddedLogin {
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appConfig["disable_embedded_login"] = true
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}
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if cfg.NoMail {
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appConfig["no_mail"] = true
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}
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if len(cfg.OIDCClients) > 0 {
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appConfig["oidc_configured"] = true
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}
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if len(MsgHeaderText) != 0 {
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appConfig["msg_header"] = map[string]string{
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"text": MsgHeaderText,
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"color": MsgHeaderColor,
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}
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}
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if HideVoxPeople {
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appConfig["hide_feedback"] = true
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}
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if captchaVerifier.Provider() != "" {
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appConfig["captcha_provider"] = captchaVerifier.Provider()
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appConfig["captcha_site_key"] = captchaVerifier.SiteKey()
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}
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if appcfg, err := json.MarshalIndent(appConfig, "", " "); err != nil {
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log.Println("Unable to generate JSON config to inject in web application")
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} else {
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CustomHeadHTML += `<script id="app-config" type="application/json">` + string(appcfg) + `</script>`
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}
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serveFile := serveOrReverse("", cfg)
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serveIndex := serveOrReverse("/", cfg)
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serveManifest := serveOrReverse("/manifest.json", cfg)
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immutable := func(c *gin.Context) { c.Writer.Header().Set("Cache-Control", "public, max-age=604800, immutable") }
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if cfg.DevProxy != "" {
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router.GET("/.svelte-kit/*_", serveFile)
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router.GET("/node_modules/*_", serveFile)
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router.GET("/@vite/*_", serveFile)
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router.GET("/@id/*_", serveFile)
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router.GET("/@fs/*_", serveFile)
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router.GET("/src/*_", serveFile)
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router.GET("/home/*_", serveFile)
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}
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router.GET("/_app/*_", immutable, serveFile)
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router.GET("/", serveIndex)
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router.GET("/index.html", serveIndex)
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// Routes handled by the showcase
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router.GET("/en/*_", serveIndex)
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router.GET("/fr/*_", serveIndex)
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// Routes for real existings files
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router.GET("/fonts/*path", immutable, serveFile)
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router.GET("/img/*path", immutable, serveFile)
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router.GET("/favicon.ico", immutable, serveFile)
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router.GET("/manifest.json", serveManifest)
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router.GET("/robots.txt", serveFile)
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router.GET("/service-worker.js", serveFile)
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// Routes to virtual content
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router.GET("/domains/*_", serveIndex)
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router.GET("/email-validation", serveIndex)
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router.GET("/forgotten-password", serveIndex)
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router.GET("/join", serveIndex)
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router.GET("/login", serveIndex)
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router.GET("/me", serveIndex)
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router.GET("/onboarding/*_", serveIndex)
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router.GET("/providers/*_", serveIndex)
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router.GET("/services/*_", serveIndex)
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router.GET("/tools/*_", serveIndex)
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router.GET("/resolver/*_", serveIndex)
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router.GET("/zones/*_", serveIndex)
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}
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func NoRoute(cfg *happydns.Options, router *gin.Engine) {
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serveIndex := serveOrReverse("/", cfg)
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router.NoRoute(func(c *gin.Context) {
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if strings.HasPrefix(c.Request.URL.Path, cfg.BasePath+"/api") || strings.Contains(c.Request.Header.Get("Accept"), "application/json") {
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c.JSON(404, gin.H{"code": "PAGE_NOT_FOUND", "errmsg": "Page not found"})
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} else if cfg.BasePath != "" && !strings.HasPrefix(c.Request.URL.Path, cfg.BasePath) {
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c.Redirect(http.StatusFound, cfg.BasePath+c.Request.URL.Path)
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} else {
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serveIndex(c)
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}
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})
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}
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func serveOrReverse(forced_url string, cfg *happydns.Options) gin.HandlerFunc {
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if cfg.DevProxy != "" {
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// Parse once at creation time, not per request
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devURL, err := url.Parse(cfg.DevProxy)
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if err != nil {
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return func(c *gin.Context) {
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http.Error(c.Writer, "invalid dev proxy URL: "+err.Error(), http.StatusInternalServerError)
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}
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}
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// Forward to the Vue dev proxy
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return func(c *gin.Context) {
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u := *devURL // copy to avoid mutating shared state across requests
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if forced_url != "" {
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u.Path = path.Join(u.Path, forced_url)
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} else {
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u.Path = path.Join(u.Path, c.Request.URL.Path)
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}
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u.RawQuery = c.Request.URL.RawQuery
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r, err := http.NewRequest(c.Request.Method, u.String(), c.Request.Body)
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if err != nil {
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http.Error(c.Writer, err.Error(), http.StatusInternalServerError)
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return
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}
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resp, err := http.DefaultClient.Do(r)
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if err != nil {
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http.Error(c.Writer, err.Error(), http.StatusBadGateway)
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return
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}
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defer resp.Body.Close()
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if u.Path != "/" || resp.StatusCode != 200 {
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for key, vals := range resp.Header {
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for _, v := range vals {
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c.Writer.Header().Add(key, v)
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}
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}
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c.Writer.WriteHeader(resp.StatusCode)
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io.Copy(c.Writer, resp.Body)
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} else {
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for key, vals := range resp.Header {
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if !strings.EqualFold(key, "content-length") {
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for _, v := range vals {
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c.Writer.Header().Add(key, v)
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}
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}
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}
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v, err := io.ReadAll(resp.Body)
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if err != nil {
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http.Error(c.Writer, err.Error(), http.StatusBadGateway)
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return
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}
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// Local template per request — no race condition on a package-level var
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tpl, err := template.New("index.html").Parse(
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strings.Replace(strings.Replace(string(v),
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"</head>", "{{ .Head }}</head>", 1),
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"</body>", "{{ .Body }}</body>", 1),
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)
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if err != nil {
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http.Error(c.Writer, err.Error(), http.StatusInternalServerError)
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return
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}
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if err := tpl.Execute(c.Writer, map[string]string{
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"Body": CustomBodyHTML,
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"Head": CustomHeadHTML,
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}); err != nil {
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log.Println("Unable to return index.html:", err.Error())
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}
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}
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}
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} else if Assets == nil {
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return func(c *gin.Context) {
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c.String(http.StatusNotFound, "404 Page not found - interface not embedded in binary, please compile with -tags web")
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}
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} else if forced_url == "/" {
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// Pre-render index.html once at handler creation time
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f, err := Assets.Open("index.html")
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if err != nil {
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log.Println("Unable to open embedded index.html:", err)
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return func(c *gin.Context) {
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c.String(http.StatusInternalServerError, "index.html not found in embedded assets")
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}
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}
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v, err := io.ReadAll(f)
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if err != nil {
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log.Println("Unable to read embedded index.html:", err)
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return func(c *gin.Context) {
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c.String(http.StatusInternalServerError, "failed to read embedded index.html")
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}
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}
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rendered := []byte(strings.Replace(strings.Replace(string(v), "</head>", CustomHeadHTML+"</head>", 1), "</body>", CustomBodyHTML+"</body>", 1))
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if cfg.BasePath != "" {
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rendered = bytes.ReplaceAll(
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bytes.ReplaceAll(
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bytes.ReplaceAll(
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bytes.ReplaceAll(
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rendered,
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[]byte(`href="/`),
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append([]byte(`href="`), append([]byte(cfg.BasePath), '/')...),
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),
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[]byte(`import("/`),
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append([]byte(`import("`), append([]byte(cfg.BasePath), '/')...),
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),
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[]byte(`base: "`),
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append([]byte(`base: "`), []byte(cfg.BasePath)...),
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),
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[]byte("</head>"),
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[]byte(`<base href="`+cfg.BasePath+`"></head>`),
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)
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}
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return func(c *gin.Context) {
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c.Data(http.StatusOK, "text/html; charset=utf-8", rendered)
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}
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} else if forced_url == "/manifest.json" {
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// Serve altered manifest.json
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return func(c *gin.Context) {
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f, err := Assets.Open("manifest.json")
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if err != nil {
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c.String(http.StatusInternalServerError, "manifest.json not found in embedded assets")
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return
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}
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v, err := io.ReadAll(f)
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if err != nil {
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c.String(http.StatusInternalServerError, "failed to read manifest.json")
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return
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}
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v2 := strings.Replace(strings.Replace(string(v), "\"id\": \"/\"", "\"id\": \""+cfg.BasePath+"\"", 1), "\"start_url\": \"/\"", "\"start_url\": \""+cfg.BasePath+"\"", 1)
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c.Data(http.StatusOK, "application/manifest+json", []byte(v2))
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}
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} else if forced_url != "" {
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// Serve forced_url
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return func(c *gin.Context) {
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c.FileFromFS(forced_url, Assets)
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}
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} else {
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// Serve requested file
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return func(c *gin.Context) {
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c.FileFromFS(strings.TrimPrefix(c.Request.URL.Path, cfg.BasePath), Assets)
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}
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}
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}
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