Ensure active Caddyfile, if in site, is hidden no matter the cwd

caddyhttp/httpserver/plugin.go

@@ -7,6 +7,7 @@ import (
 	"net"
 	"net/url"
 	"os"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -21,7 +22,7 @@ func init() {
 	flag.StringVar(&Host, "host", DefaultHost, "Default host")
 	flag.StringVar(&Port, "port", DefaultPort, "Default port")
 	flag.StringVar(&Root, "root", DefaultRoot, "Root path of default site")
-	flag.DurationVar(&GracefulTimeout, "grace", 5*time.Second, "Maximum duration of graceful shutdown") // TODO
+	flag.DurationVar(&GracefulTimeout, "grace", 5*time.Second, "Maximum duration of graceful shutdown")
 	flag.BoolVar(&HTTP2, "http2", true, "Use HTTP/2")
 	flag.BoolVar(&QUIC, "quic", false, "Use experimental QUIC")
 
@@ -44,10 +45,31 @@ func init() {
 		NewContext: newContext,
 	})
 	caddy.RegisterCaddyfileLoader("short", caddy.LoaderFunc(shortCaddyfileLoader))
+	caddy.RegisterParsingCallback(serverType, "root", hideCaddyfile)
 	caddy.RegisterParsingCallback(serverType, "tls", activateHTTPS)
 	caddytls.RegisterConfigGetter(serverType, func(c *caddy.Controller) *caddytls.Config { return GetConfig(c).TLS })
 }
 
+// hideCaddyfile hides the source/origin Caddyfile if it is within the
+// site root. This function should be run after parsing the root directive.
+func hideCaddyfile(cctx caddy.Context) error {
+	ctx := cctx.(*httpContext)
+	for _, cfg := range ctx.siteConfigs {
+		absRoot, err := filepath.Abs(cfg.Root)
+		if err != nil {
+			return err
+		}
+		absOriginCaddyfile, err := filepath.Abs(cfg.originCaddyfile)
+		if err != nil {
+			return err
+		}
+		if strings.HasPrefix(absOriginCaddyfile, absRoot) {
+			cfg.HiddenFiles = append(cfg.HiddenFiles, strings.TrimPrefix(absOriginCaddyfile, absRoot))
+		}
+	}
+	return nil
+}
+
 func newContext() caddy.Context {
 	return &httpContext{keysToSiteConfigs: make(map[string]*SiteConfig)}
 }
@@ -95,10 +117,10 @@ func (h *httpContext) InspectServerBlocks(sourceFile string, serverBlocks []cadd
 
 			// Save the config to our master list, and key it for lookups
 			cfg := &SiteConfig{
-				Addr:        addr,
-				Root:        Root,
-				TLS:         &caddytls.Config{Hostname: addr.Host},
-				HiddenFiles: []string{sourceFile},
+				Addr:            addr,
+				Root:            Root,
+				TLS:             &caddytls.Config{Hostname: addr.Host},
+				originCaddyfile: sourceFile,
 			}
 			h.saveConfig(key, cfg)
 		}