From 1ebdb78c0c710427481da79260e7b7573b331334 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Sun, 17 Apr 2022 21:33:34 -0230
Subject: add dev mode and tls support to server

---
 server.go | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 56 insertions(+), 14 deletions(-)

(limited to 'server.go')

diff --git a/server.go b/server.go
index d40c86c..225d77f 100644
--- a/server.go
+++ b/server.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"flag"
 	"fmt"
 	tmpl "html/template"
 	"io/fs"
@@ -12,23 +13,50 @@ import (
 	"strings"
 )
 
+var (
+	host   = "samanthony.xyz"
+	port   = "443"
+	htdocs = "/var/www/htdocs/samanthony.xyz"
+)
+
+const (
+	acmeDocs = "/var/www/acme/"
+	certFile = "/etc/ssl/samanthony.xyz.fullchain.pem"
+	keyFile  = "/etc/ssl/private/samanthony.xyz.key"
+)
+
 const (
-	host = ""
-	port = "6969"
-	root = "htdocs/"
+	devHost   = "localhost"
+	devPort   = "6969"
+	devHtdocs = "htdocs/"
 )
 
+var devMode bool
+
+func init() {
+	flag.BoolVar(&devMode, "dev", false,
+		"Run server in debug/development mode (on localhost without tls)")
+
+	flag.Parse()
+
+	if devMode {
+		host = devHost
+		port = devPort
+		htdocs = devHtdocs
+	}
+}
+
 var tmpls = make(map[string]*tmpl.Template)
 
 func init() {
-	err := fp.WalkDir(root, func(path string, d fs.DirEntry, err error) error {
-		if fp.Clean(path) == fp.Clean(root) ||
+	err := fp.WalkDir(htdocs, func(path string, d fs.DirEntry, err error) error {
+		if fp.Clean(path) == fp.Clean(htdocs) ||
 			fp.Ext(path) != ".html" ||
-			path == fp.Join(root, "base.html") {
+			path == fp.Join(htdocs, "base.html") {
 			return nil
 		}
-		label := path[len(fp.Clean(root)):]
-		tmpls[label] = tmpl.Must(tmpl.ParseFiles(fp.Join(root, "base.html"), path))
+		label := path[len(fp.Clean(htdocs)):]
+		tmpls[label] = tmpl.Must(tmpl.ParseFiles(fp.Join(htdocs, "base.html"), path))
 		return nil
 	})
 	if err != nil {
@@ -62,7 +90,7 @@ func rootHandler(w http.ResponseWriter, r *http.Request) {
 
 	// If request directory, serve index.html.
 	// ie. /software -> /software/index.html
-	if info, err := os.Stat(fp.Join(root, reqPath)); err == nil {
+	if info, err := os.Stat(fp.Join(htdocs, reqPath)); err == nil {
 		if info.IsDir() {
 			reqPath = path.Join(reqPath, "index.html")
 		}
@@ -70,7 +98,7 @@ func rootHandler(w http.ResponseWriter, r *http.Request) {
 		http.NotFound(w, r)
 		return
 	} else {
-		fmt.Println(err)
+		log.Println(err)
 		code := http.StatusInternalServerError
 		http.Error(w, http.StatusText(code), code)
 		return
@@ -89,18 +117,32 @@ func rootHandler(w http.ResponseWriter, r *http.Request) {
 
 		err := t.Execute(w, page)
 		if err != nil {
-			fmt.Println(err)
+			log.Println(err)
 			code := http.StatusInternalServerError
 			http.Error(w, http.StatusText(code), code)
 			return
 		}
 	} else {
-		http.ServeFile(w, r, fp.Join(root, reqPath))
+		http.ServeFile(w, r, fp.Join(htdocs, reqPath))
 	}
 }
 
 func main() {
 	http.HandleFunc("/", rootHandler)
-	fmt.Printf("Listening on %s:%s\n", host, port)
-	log.Fatal(http.ListenAndServe(fmt.Sprintf("%s:%s", host, port), nil))
+	if !devMode {
+		http.Handle("/.well-known/acme-challenge/",
+			http.StripPrefix(
+				"/.well-known/acme-challenge/",
+				http.FileServer(http.Dir(acmeDocs)),
+			),
+		)
+	}
+
+	if devMode {
+		log.Printf("Listening on %s:%s\n", devHost, devPort)
+		log.Fatal(http.ListenAndServe(fmt.Sprintf("%s:%s", devHost, devPort), nil))
+	} else {
+		log.Printf("Listening on %s:%s\n", host, port)
+		log.Fatal(http.ListenAndServeTLS(fmt.Sprintf("%s:%s", host, port), certFile, keyFile, nil))
+	}
 }
-- 
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