caddyhttp: Minor cleanup and fix nil pointer deref in caddyfile adapter

caddyconfig/httpcaddyfile/httptype.go

@@ -215,6 +215,12 @@ func (st ServerType) Setup(originalServerBlocks []caddyfile.ServerBlock,
 		if tlsApp.Automation == nil {
 			tlsApp.Automation = new(caddytls.AutomationConfig)
 		}
+		if !hasACMECA {
+			acmeCA = ""
+		}
+		if !hasEmail {
+			email = ""
+		}
 		tlsApp.Automation.Policies = append(tlsApp.Automation.Policies, caddytls.AutomationPolicy{
 			ManagementRaw: caddyconfig.JSONModuleObject(caddytls.ACMEManagerMaker{
 				CA:    acmeCA.(string),

modules/caddyhttp/caddyauth/command.go

@@ -56,6 +56,10 @@ func cmdHashPassword(fs caddycmd.Flags) (int, error) {
 	plaintext := []byte(fs.String("plaintext"))
 	salt := []byte(fs.String("salt"))
 
+	if len(plaintext) == 0 {
+		return caddy.ExitCodeFailedStartup, fmt.Errorf("password is required")
+	}
+
 	var hash []byte
 	var err error
 	switch algorithm {

modules/caddyhttp/reverseproxy/fastcgi/caddyfile.go

@@ -82,12 +82,17 @@ func (t *Transport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 //
 // is equivalent to:
 //
-//     matcher indexFiles {
+//     matcher canonicalPath {
 //         file {
-//             try_files {path} index.php
+//             try_files {path}/index.php
+//         }
+//         not {
+//             path */
 //         }
 //     }
-//     rewrite match:indexFiles {http.matchers.file.relative}
+//     redir match:canonicalPath {path}/ 308
+//
+//     try_files {path} {path}/index.php index.php
 //
 //     matcher phpFiles {
 //         path *.php
@@ -101,8 +106,8 @@ func (t *Transport) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
 // Thus, this directive produces multiple routes, each with a different
 // matcher because multiple consecutive routes are necessary to support
 // the common PHP use case. If this "common" config is not compatible
-// with a user's PHP requirements, they can use the manual approach as
+// with a user's PHP requirements, they can use a manual approach based
-// above to configure it precisely as they need.
+// on the example above to configure it precisely as they need.
 //
 // If a matcher is specified by the user, for example:
 //