Fix keyword collision in Rust 2024 and add new api/config value (#4975)

* Avoid keyword collision with gen in Rust 2024

* Include new api/config setting to disable user registration, not yet used by clients

* Actually qualify CONFIG

Author: dani-garcia

src/api/core/mod.rs

@@ -204,6 +204,9 @@ fn config() -> Json<Value> {
           "name": "Vaultwarden",
           "url": "https://github.com/dani-garcia/vaultwarden"
         },
+        "settings": {
+            "disableUserRegistration": !crate::CONFIG.signups_allowed() && crate::CONFIG.signups_domains_whitelist().is_empty(),
+        },
         "environment": {
           "vault": domain,
           "api": format!("{domain}/api"),

src/config.rs

@@ -331,7 +331,7 @@ macro_rules! make_config {
             }
         }
     }};
-    ( @build $value:expr, $config:expr, gen, $default_fn:expr ) => {{
+    ( @build $value:expr, $config:expr, generated, $default_fn:expr ) => {{
         let f: &dyn Fn(&ConfigItems) -> _ = &$default_fn;
         f($config)
     }};
@@ -349,10 +349,10 @@ macro_rules! make_config {
 // }
 //
 // Where action applied when the value wasn't provided and can be:
-//  def:    Use a default value
-//  auto:   Value is auto generated based on other values
-//  option: Value is optional
-//  gen:    Value is always autogenerated and it's original value ignored
+//  def:       Use a default value
+//  auto:      Value is auto generated based on other values
+//  option:    Value is optional
+//  generated: Value is always autogenerated and it's original value ignored
 make_config! {
     folders {
         ///  Data folder |> Main data folder
@@ -515,7 +515,7 @@ make_config! {
         /// Set to the string "none" (without quotes), to disable any headers and just use the remote IP
         ip_header:              String, true,   def,    "X-Real-IP".to_string();
         /// Internal IP header property, used to avoid recomputing each time
-        _ip_header_enabled:     bool,   false,  gen,    |c| &c.ip_header.trim().to_lowercase() != "none";
+        _ip_header_enabled:     bool,   false,  generated,    |c| &c.ip_header.trim().to_lowercase() != "none";
         /// Icon service |> The predefined icon services are: internal, bitwarden, duckduckgo, google.
         /// To specify a custom icon service, set a URL template with exactly one instance of `{}`,
         /// which is replaced with the domain. For example: `https://icon.example.com/domain/{}`.
@@ -524,9 +524,9 @@ make_config! {
         /// corresponding icon at the external service.
         icon_service:           String, false,  def,    "internal".to_string();
         /// _icon_service_url
-        _icon_service_url:      String, false,  gen,    |c| generate_icon_service_url(&c.icon_service);
+        _icon_service_url:      String, false,  generated,    |c| generate_icon_service_url(&c.icon_service);
         /// _icon_service_csp
-        _icon_service_csp:      String, false,  gen,    |c| generate_icon_service_csp(&c.icon_service, &c._icon_service_url);
+        _icon_service_csp:      String, false,  generated,    |c| generate_icon_service_csp(&c.icon_service, &c._icon_service_url);
         /// Icon redirect code |> The HTTP status code to use for redirects to an external icon service.
         /// The supported codes are 301 (legacy permanent), 302 (legacy temporary), 307 (temporary), and 308 (permanent).
         /// Temporary redirects are useful while testing different icon services, but once a service
@@ -624,7 +624,7 @@ make_config! {
         /// WARNING: This could cause issues with clients. Also exports will not work on Bitwarden servers!
         increase_note_size_limit:      bool,  true,  def, false;
         /// Generated max_note_size value to prevent if..else matching during every check
-        _max_note_size:                usize, false, gen, |c| if c.increase_note_size_limit {100_000} else {10_000};
+        _max_note_size:                usize, false, generated, |c| if c.increase_note_size_limit {100_000} else {10_000};
 
         /// Enforce Single Org with Reset Password Policy |> Enforce that the Single Org policy is enabled before setting the Reset Password policy
         /// Bitwarden enforces this by default. In Vaultwarden we encouraged to use multiple organizations because groups were not available.
@@ -695,7 +695,7 @@ make_config! {
         /// Embed images as email attachments.
         smtp_embed_images:             bool, true, def, true;
         /// _smtp_img_src
-        _smtp_img_src:                 String, false, gen, |c| generate_smtp_img_src(c.smtp_embed_images, &c.domain);
+        _smtp_img_src:                 String, false, generated, |c| generate_smtp_img_src(c.smtp_embed_images, &c.domain);
         /// Enable SMTP debugging (Know the risks!) |> DANGEROUS: Enabling this will output very detailed SMTP messages. This could contain sensitive information like passwords and usernames! Only enable this during troubleshooting!
         smtp_debug:                    bool,   false,  def,     false;
         /// Accept Invalid Certs (Know the risks!) |> DANGEROUS: Allow invalid certificates. This option introduces significant vulnerabilities to man-in-the-middle attacks!