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|
package main
import (
"html/template"
"log"
"net/http"
"strings"
)
type TemplateHandler struct {
handler http.Handler
}
func (t *TemplateHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Server", "uhttpd")
// We use our custom handler to prettify directories. Files are served via default.
if !strings.HasSuffix(r.URL.Path, "/") {
t.handler.ServeHTTP(w, r)
return
}
rec := NewRecorder()
defer rec.Body.Reset()
// passing the recorder instead of the real ResponseWriter
t.handler.ServeHTTP(rec, r)
// let the standard lib handle all the caching
if rec.Code > 300 && rec.Code < 400 {
log.Println("Code: ", rec.Code)
t.handler.ServeHTTP(w, r)
return
}
// we copy the original headers first
for k, v := range rec.Header() {
w.Header()[k] = v
}
// not found
if rec.Code == 404 {
w.Header().Set("Content-Type", "text/html")
w.WriteHeader(404)
tmpl := template.New("404")
tmpl, err := tmpl.Parse(get404())
if err != nil {
log.Println(err.Error())
w.WriteHeader(500)
w.Write([]byte(err.Error()))
return
}
err = tmpl.Execute(w, struct{ URL string }{URL: r.URL.Path})
if err != nil {
log.Println(err.Error())
w.WriteHeader(500)
w.Write([]byte(err.Error()))
return
}
return
}
// we serve a file instead of a html page
if !strings.Contains(w.Header().Get("Content-Type"), "text/html") {
w.Write(rec.Body.Bytes())
return
}
data := rec.Body.String()
// we serve the directoy page
if strings.HasPrefix(data, "<pre>") {
execTemplate(w, r, data)
} else {
w.Write(rec.Body.Bytes())
}
}
func execTemplate(w http.ResponseWriter, r *http.Request, data string) {
data = strings.Replace(data, "<pre>", "", 1)
data = strings.Replace(data, "</pre>", "", 1)
data = strings.Replace(data, "</a>", "</a><br>", -1)
tmpl := template.New("page")
tmpl, err := tmpl.Parse(getTemplate())
if err != nil {
log.Println(err.Error())
w.WriteHeader(500)
w.Write([]byte(err.Error()))
return
}
err = tmpl.Execute(w, struct {
Data template.HTML
URL string
}{Data: template.HTML(data), URL: r.URL.Path})
if err != nil {
log.Println(err)
}
}
func NewTemplateHandler(handler http.Handler, allowedHost string) *TemplateHandler {
return &TemplateHandler{handler: handler}
}
func getTemplate() string {
return `<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>{{.URL}}</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>/*! normalize.css v3.0.2 | MIT License | git.io/normalize */html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0}a{background-color:transparent}a:active,a:hover{outline:0}button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}.container{position:relative;width:100%;max-width:960px;margin:0 auto;padding:0 20px;box-sizing:border-box}.column{width:100%;float:left;box-sizing:border-box}@media (min-width:400px){.container{width:85%;padding:0}}@media (min-width:550px){.container{width:80%}.column{margin-left:4%}.column:first-child{margin-left:0}}html{font-size:62.5%}body{font-size:1.5em;line-height:1.6;font-weight:400;font-family:Raleway,HelveticaNeue,"Helvetica Neue",Helvetica,Arial,sans-serif;color:#222}h4{margin-top:0;margin-bottom:2rem;font-weight:300;font-size:2.4rem;line-height:1.35;letter-spacing:-.08rem}@media (min-width:550px){h4{font-size:3rem}}a{color:#1EAEDB}a:hover{color:#0FA0CE}blockquote{margin-bottom:2.5rem}.container:after,.row:after{content:"";display:table;clear:both}.margin-top{margin-top:20px}.dir,.dir:hover{color:#000}.dir:hover{text-decoration:none}.dir:before{content:"> "}div.icon{height:32px;width:32px;position:relative;margin:15px;overflow:hidden;display:inline-block}div.icon div.home{height:0;width:0;border-width:16px;border-style:solid;border-color:transparent transparent #333;position:absolute;bottom:16px;left:0}div.icon div.home:after{content:'';width:5px;height:16px;background-color:transparent;position:absolute;top:16px;right:-11px;border-left:8px solid #333;border-right:8px solid #333}div.icon div.home:before{content:'';width:9px;height:6px;background-color:#333;position:absolute;top:16px;right:-5px}div.icon div.chimney{width:4px;height:10px;background:#333;position:absolute;right:6px;top:3px}</style>
</head>
<body>
<div class="container">
<div class="row">
<div class="column margin-top">
<h4><a href="/.." title="Go back to root"><div class="icon"><div class="home"></div><div class="chimney"></div></div></a><br>
{{.URL}}</h4>
<blockquote>
{{if ne .URL "/"}}
<a class="dir" href="..">.. (up a dir)</a><br><br>
{{end}}
{{.Data}}
</blockquote>
</div>
</div>
</div>
<script>
String.prototype.endsWith = function(suffix) {
return this.indexOf(suffix, this.length - suffix.length) !== -1;
}
allAnchors = document.querySelectorAll("a");
for(i=0;i<allAnchors.length;i++){
if (allAnchors[i].getAttribute("href").endsWith("/")){
allAnchors[i].className = allAnchors[i].className + " dir";
}
allAnchors[i].className = allAnchors[i].className + " item";
}
</script>
</body>
</html>`
}
func get404() string {
return `<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Not Found - {{.URL}}</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>/*! normalize.css v3.0.2 | MIT License | git.io/normalize */html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}body{margin:0}a{background-color:transparent}a:active,a:hover{outline:0}button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}.container{position:relative;width:100%;max-width:960px;margin:0 auto;padding:0 20px;box-sizing:border-box}@media (min-width:400px){.container{width:85%;padding:0}}@media (min-width:550px){.container{width:80%}}html{font-size:62.5%}body{font-size:1.5em;line-height:1.6;font-weight:400;font-family:Raleway,HelveticaNeue,"Helvetica Neue",Helvetica,Arial,sans-serif;color:#222}h3{margin-top:0;margin-bottom:2rem;font-weight:300;font-size:3rem;line-height:1.3;letter-spacing:-.1rem}@media (min-width:550px){h3{font-size:3.6rem}}p{margin-top:0}a{color:#1EAEDB}a:hover{color:#0FA0CE}.button{display:inline-block;height:38px;padding:0 30px;color:#555;text-align:center;font-size:11px;font-weight:600;line-height:38px;letter-spacing:.1rem;text-transform:uppercase;text-decoration:none;white-space:nowrap;background-color:transparent;border-radius:4px;border:1px solid #bbb;cursor:pointer;box-sizing:border-box}.button:focus,.button:hover{color:#333;border-color:#888;outline:0}.button.button-primary{color:#FFF;background-color:#33C3F0;border-color:#33C3F0}.button.button-primary:focus,.button.button-primary:hover{color:#FFF;background-color:#1EAEDB;border-color:#1EAEDB}.button{margin-bottom:1rem}p{margin-bottom:2.5rem}.container:after{content:"";display:table;clear:both}.section{padding:8rem 0 7rem;text-align:center}.section-description,.section-heading{margin-bottom:1.2rem}</style>
</head>
<body>
<div class="section">
<div class="container">
<h3 class="section-heading">Not Found - {{.URL}}</h3>
<p class="section-description">
Please check for typos in your url. </p>
<p class="section-description">
<a href="/" class="button button-primary">Go back to root</a></p>
</div>
</div>
</body>
</html>`
}
|
