read only mode a gogo

config/config.go

@@ -19,6 +19,7 @@ var (
 	Foot            string
 	OAuthServer     string
 	VersionInterval time.Duration
+	ReadOnly        bool
 )
 
 func init() {
@@ -36,11 +37,12 @@ func Refresh() {
 	as.Append(args.STRING, "wrap", "file with http header/footer", "")
 	as.Append(args.STRING, "oauth", "oauth URL", "")
 	as.Append(args.DURATION, "version", "duration to mark versions", "0s")
+	as.Append(args.BOOL, "ro", "read-only mode", false)
 	if err := as.Parse(); err != nil {
 		panic(err)
 	}
 
-	wrap := as.Get("wrap").GetString()
+	wrap := as.GetString("wrap")
 	var b []byte
 	if len(wrap) > 0 {
 		log.Printf("reading %v (%T)", wrap, wrap)
@@ -57,13 +59,14 @@ func Refresh() {
 		panic(len(bs))
 	}
 
-	Root = strings.TrimSuffix(as.Get("root").GetString(), "/")
+	Root = strings.TrimSuffix(as.GetString("root"), "/")
 	Root, _ = filepath.Abs(Root)
-	Port = ":" + strings.TrimPrefix(as.Get("port").GetString(), ":")
+	Port = ":" + strings.TrimPrefix(as.GetString("port"), ":")
 	Head = string(bs[0])
 	Foot = string(bs[1])
-	OAuthServer = as.Get("oauth").GetString()
-	VersionInterval = as.Get("version").GetDuration()
+	OAuthServer = as.GetString("oauth")
+	VersionInterval = as.GetDuration("version")
+	ReadOnly = as.GetBool("ro")
 }
 
 const defaultWrapper = `

server/notes.go

@@ -2,6 +2,7 @@ package server
 
 import (
 	"fmt"
+	"local/notes-server/config"
 	"local/notes-server/filetree"
 	"net/http"
 	"path"
@@ -58,18 +59,27 @@ func fileHead(w http.ResponseWriter, baseHREF string) {
 }
 
 func htmlEdit(w http.ResponseWriter, baseHREF string) {
+	if config.ReadOnly {
+		return
+	}
 	fmt.Fprintf(w, `<div style='display:inline-block'>
       <a href=%q><input type="button" value="Edit"></input></a>
    </div><br>`, path.Join("/edit/", baseHREF))
 }
 
 func htmlDelete(w http.ResponseWriter, baseHREF string) {
+	if config.ReadOnly {
+		return
+	}
 	fmt.Fprintf(w, `<div style='display:inline-block'>
       <a href=%q><input type="button" value="Delete" onclick="return confirm('Delete?');"></input></a>
    </div><br>`, path.Join("/delete/", baseHREF))
 }
 
 func htmlCreate(w http.ResponseWriter, baseHREF string) {
+	if config.ReadOnly {
+		return
+	}
 	fmt.Fprintf(w, `
         <form action=%q method="get">
            <input type="text" name="base"></input>

server/routes.go

@@ -3,49 +3,50 @@ package server
 import (
 	"fmt"
 	"local/gziphttp"
+	"local/notes-server/config"
 	"local/router"
 	"net/http"
 	"path/filepath"
+	"strings"
 )
 
 func (s *Server) Routes() error {
 	wildcard := router.Wildcard
-	endpoints := []struct {
-		path    string
+	endpoints := map[string]struct {
 		handler http.HandlerFunc
 	}{
-		{
-			path:    "/",
+		"/": {
 			handler: s.root,
 		},
-		{
-			path:    fmt.Sprintf("notes/%s%s", wildcard, wildcard),
+		fmt.Sprintf("notes/%s%s", wildcard, wildcard): {
 			handler: s.gzip(s.authenticate(s.notes)),
 		},
-		{
-			path:    fmt.Sprintf("edit/%s%s", wildcard, wildcard),
+		fmt.Sprintf("edit/%s%s", wildcard, wildcard): {
 			handler: s.gzip(s.authenticate(s.edit)),
 		},
-		{
-			path:    fmt.Sprintf("delete/%s%s", wildcard, wildcard),
+		fmt.Sprintf("delete/%s%s", wildcard, wildcard): {
 			handler: s.gzip(s.authenticate(s.delete)),
 		},
-		{
-			path:    fmt.Sprintf("submit/%s%s", wildcard, wildcard),
+		fmt.Sprintf("submit/%s%s", wildcard, wildcard): {
 			handler: s.gzip(s.authenticate(s.submit)),
 		},
-		{
-			path:    fmt.Sprintf("create/%s%s", wildcard, wildcard),
+		fmt.Sprintf("create/%s%s", wildcard, wildcard): {
 			handler: s.gzip(s.authenticate(s.create)),
 		},
-		{
-			path:    fmt.Sprintf("search"),
+		fmt.Sprintf("search"): {
 			handler: s.gzip(s.authenticate(s.search)),
 		},
 	}
 
-	for _, endpoint := range endpoints {
-		if err := s.Add(endpoint.path, endpoint.handler); err != nil {
+	for path, endpoint := range endpoints {
+		if config.ReadOnly {
+			for _, prefix := range []string{"edit/", "delete/", "delete/", "create/", "submit/"} {
+				if strings.HasPrefix(path, prefix) {
+					endpoint.handler = http.NotFound
+				}
+			}
+		}
+		if err := s.Add(path, endpoint.handler); err != nil {
 			return err
 		}
 	}