web UIs: allow to replace the default CSS

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>

config/config.go

@@ -1353,6 +1353,12 @@ func getHTTPDUIBrandingFromEnv(prefix string) (httpd.UIBranding, bool) {
 		isSet = true
 	}
 
+	defaultCSSPath, ok := os.LookupEnv(fmt.Sprintf("%s__DEFAULT_CSS", prefix))
+	if ok {
+		result.DefaultCSS = defaultCSSPath
+		isSet = true
+	}
+
 	extraCSS, ok := lookupStringListFromEnv(fmt.Sprintf("%s__EXTRA_CSS", prefix))
 	if ok {
 		result.ExtraCSS = extraCSS

config/config_test.go

@@ -939,6 +939,7 @@ func TestHTTPDBindingsFromEnv(t *testing.T) {
 	os.Setenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_ADMIN__LOGIN_IMAGE_PATH", "login_image.png")
 	os.Setenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_CLIENT__DISCLAIMER_NAME", "disclaimer")
 	os.Setenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_ADMIN__DISCLAIMER_PATH", "disclaimer.html")
+	os.Setenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_CLIENT__DEFAULT_CSS", "default.css")
 	os.Setenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_CLIENT__EXTRA_CSS", "1.css,2.css")
 	t.Cleanup(func() {
 		os.Unsetenv("SFTPGO_HTTPD__BINDINGS__0__ADDRESS")
@@ -996,6 +997,7 @@ func TestHTTPDBindingsFromEnv(t *testing.T) {
 		os.Unsetenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_ADMIN__LOGIN_IMAGE_PATH")
 		os.Unsetenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_CLIENT__DISCLAIMER_NAME")
 		os.Unsetenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_ADMIN__DISCLAIMER_PATH")
+		os.Unsetenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_CLIENT__DEFAULT_CSS")
 		os.Unsetenv("SFTPGO_HTTPD__BINDINGS__2__BRANDING__WEB_CLIENT__EXTRA_CSS")
 	})
 
@@ -1081,6 +1083,7 @@ func TestHTTPDBindingsFromEnv(t *testing.T) {
 	require.Equal(t, "login_image.png", bindings[2].Branding.WebAdmin.LoginImagePath)
 	require.Equal(t, "disclaimer", bindings[2].Branding.WebClient.DisclaimerName)
 	require.Equal(t, "disclaimer.html", bindings[2].Branding.WebAdmin.DisclaimerPath)
+	require.Equal(t, "default.css", bindings[2].Branding.WebClient.DefaultCSS)
 	require.Len(t, bindings[2].Branding.WebClient.ExtraCSS, 2)
 	require.Equal(t, "1.css", bindings[2].Branding.WebClient.ExtraCSS[0])
 	require.Equal(t, "2.css", bindings[2].Branding.WebClient.ExtraCSS[1])

docs/full-configuration.md

@@ -280,6 +280,7 @@ The configuration file contains the following sections:
       - `login_image_path`, string. Path to a custom image to show on the login screen relative to `static_files_path`. The preferred image size is 900x900 pixel
       - `disclaimer_name`, string. Name for your optional disclaimer
       - `disclaimer_path`, string. Path to the HTML page with the disclaimer relative to `static_files_path`
+      - `default_css`, string. Optional path to a custom CSS file, relative to `static_files_path`, which replaces the SB Admin2 default CSS
       - `extra_css`, list of strings. Defines the paths, relative to `static_files_path`, to additional CSS files
   - `templates_path`, string. Path to the HTML web templates. This can be an absolute path or a path relative to the config dir
   - `static_files_path`, string. Path to the static files for the web interface. This can be an absolute path or a path relative to the config dir. If both `templates_path` and `static_files_path` are empty the built-in web interface will be disabled
@@ -327,7 +328,7 @@ The configuration file contains the following sections:
     - `url`, string, optional. If not empty, the header will be added only if the request URL starts with the one specified here
 - **command**, configuration for external commands such as program based hooks
   - `timeout`, integer. Timeout specifies a time limit, in seconds, to execute external commands. Valid range: `1-300`. Default: `30`
-  - `env`, list of strings. Additional environment variable to pass to all the external commands. Each entry is of the form `key=value`. Default: empty
+  - `env`, list of strings. Additional environment variable to pass to all the external commands. Each entry is of the form `key=value`. Do not use environment variables prefixed with `SFTPGO_` to avoid conflicts with environment variables that SFTPGo hooks can set. Default: empty
   - `commands`, list of structs. Allow to customize configuration per-command. Each struct has the following fields:
     - `path`, string. Define the command path as defined in the hook configuration
     - `timeout`, integer. This value overrides the global timeout if set

httpd/httpd.go

@@ -332,6 +332,10 @@ type UIBranding struct {
 	DisclaimerName string `json:"disclaimer_name" mapstructure:"disclaimer_name"`
 	// Path to the HTML page for your disclaimer relative to "static_files_path".
 	DisclaimerPath string `json:"disclaimer_path" mapstructure:"disclaimer_path"`
+	// Path to a custom CSS file, relative to "static_files_path", which replaces
+	// the SB Admin2 default CSS. This is useful, for example, if you rebuild
+	// SB Admin2 CSS to use custom colors
+	DefaultCSS string `json:"default_css" mapstructure:"default_css"`
 	// Additional CSS file paths, relative to "static_files_path", to include
 	ExtraCSS []string `json:"extra_css" mapstructure:"extra_css"`
 }
@@ -355,6 +359,11 @@ func (b *UIBranding) check() {
 	if b.DisclaimerPath != "" {
 		b.DisclaimerPath = util.CleanPath(b.DisclaimerPath)
 	}
+	if b.DefaultCSS != "" {
+		b.DefaultCSS = util.CleanPath(b.DefaultCSS)
+	} else {
+		b.DefaultCSS = "/css/sb-admin-2.min.css"
+	}
 	for idx := range b.ExtraCSS {
 		b.ExtraCSS[idx] = util.CleanPath(b.ExtraCSS[idx])
 	}

httpd/internal_test.go

@@ -308,6 +308,7 @@ func TestBrandingValidation(t *testing.T) {
 			WebAdmin: UIBranding{
 				LogoPath:       "path1",
 				LoginImagePath: "login1.png",
+				DefaultCSS:     "my.css",
 			},
 			WebClient: UIBranding{
 				FaviconPath:    "favicon1.ico",
@@ -320,6 +321,7 @@ func TestBrandingValidation(t *testing.T) {
 	assert.Equal(t, "/favicon.ico", b.Branding.WebAdmin.FaviconPath)
 	assert.Equal(t, "/path1", b.Branding.WebAdmin.LogoPath)
 	assert.Equal(t, "/login1.png", b.Branding.WebAdmin.LoginImagePath)
+	assert.Equal(t, "/my.css", b.Branding.WebAdmin.DefaultCSS)
 	assert.Len(t, b.Branding.WebAdmin.ExtraCSS, 0)
 	assert.Equal(t, "/favicon1.ico", b.Branding.WebClient.FaviconPath)
 	assert.Equal(t, "/path2", b.Branding.WebClient.DisclaimerPath)

sftpgo.json

@@ -267,6 +267,7 @@
             "login_image_path": "",
             "disclaimer_name": "",
             "disclaimer_path": "",
+            "default_css": "",
             "extra_css": []
           },
           "web_client": {
@@ -277,6 +278,7 @@
             "login_image_path": "",
             "disclaimer_name": "",
             "disclaimer_path": "",
+            "default_css": "",
             "extra_css": []
           }
         }

templates/common/forgot-password.html

@@ -14,7 +14,7 @@
     <link rel="shortcut icon" href="{{.StaticURL}}{{.Branding.FaviconPath}}" />
 
     <!-- Custom styles for this template-->
-    <link href="{{.StaticURL}}/css/sb-admin-2.min.css" rel="stylesheet">
+    <link href="{{.StaticURL}}{{.Branding.DefaultCSS}}" rel="stylesheet">
     <style>
         {{template "commoncss" .}}
     </style>

templates/common/reset-password.html

@@ -14,7 +14,7 @@
     <link rel="shortcut icon" href="{{.StaticURL}}{{.Branding.FaviconPath}}" />
 
     <!-- Custom styles for this template-->
-    <link href="{{.StaticURL}}/css/sb-admin-2.min.css" rel="stylesheet">
+    <link href="{{.StaticURL}}{{.Branding.DefaultCSS}}" rel="stylesheet">
     <style>
         {{template "commoncss" .}}
     </style>

templates/webadmin/adminsetup.html

@@ -14,7 +14,7 @@
     <link rel="shortcut icon" href="{{.StaticURL}}{{.Branding.FaviconPath}}" />
 
     <!-- Custom styles for this template-->
-    <link href="{{.StaticURL}}/css/sb-admin-2.min.css" rel="stylesheet">
+    <link href="{{.StaticURL}}{{.Branding.DefaultCSS}}" rel="stylesheet">
     <style>
         {{template "commoncss" .}}
     </style>

templates/webadmin/base.html

@@ -20,7 +20,7 @@
     <link href="{{.StaticURL}}/vendor/fontawesome-free/css/regular.min.css" rel="stylesheet" type="text/css">
 
     <!-- Custom styles for this template-->
-    <link href="{{.StaticURL}}/css/sb-admin-2.min.css" rel="stylesheet">
+    <link href="{{.StaticURL}}{{.Branding.DefaultCSS}}" rel="stylesheet">
     <style>
         {{template "commoncss" .}}
     </style>

templates/webadmin/baselogin.html

@@ -15,7 +15,7 @@
     <link rel="shortcut icon" href="{{.StaticURL}}{{.Branding.FaviconPath}}" />
 
     <!-- Custom styles for this template-->
-    <link href="{{.StaticURL}}/css/sb-admin-2.min.css" rel="stylesheet">
+    <link href="{{.StaticURL}}{{.Branding.DefaultCSS}}" rel="stylesheet">
     <style>
         {{template "commoncss" .}}
     </style>

templates/webclient/base.html

@@ -20,7 +20,7 @@
     <link href="{{.StaticURL}}/vendor/fontawesome-free/css/regular.min.css" rel="stylesheet" type="text/css">
 
     <!-- Custom styles for this template-->
-    <link href="{{.StaticURL}}/css/sb-admin-2.min.css" rel="stylesheet">
+    <link href="{{.StaticURL}}{{.Branding.DefaultCSS}}" rel="stylesheet">
     <style>
         {{template "commoncss" .}}
     </style>

templates/webclient/baselogin.html

@@ -15,7 +15,7 @@
     <link rel="shortcut icon" href="{{.StaticURL}}{{.Branding.FaviconPath}}" />
 
     <!-- Custom styles for this template-->
-    <link href="{{.StaticURL}}/css/sb-admin-2.min.css" rel="stylesheet">
+    <link href="{{.StaticURL}}{{.Branding.DefaultCSS}}" rel="stylesheet">
     <style>
         {{template "commoncss"  .}}
     </style>