Allow changing user agent through CLI

src/compositor.rs

@@ -17,7 +17,7 @@ use euclid::{vec2, Point2D, Scale, Size2D, Transform3D, Vector2D};
 use gleam::gl;
 use ipc_channel::ipc::{self, IpcSharedMemory};
 use log::{debug, error, trace, warn};
-use profile_traits::time::{self as profile_time, profile, ProfilerCategory};
+use profile_traits::time::{self as profile_time, ProfilerCategory};
 use profile_traits::{mem, time, time_profile};
 use script_traits::CompositorEvent::{MouseButtonEvent, MouseMoveEvent, TouchEvent, WheelEvent};
 use script_traits::{

src/config.rs

@@ -39,6 +39,8 @@ pub struct CliArgs {
     /// Path to resource directory. If None, Verso will try to get default directory. And if that
     /// still doesn't exist, all resource configuration will set to default values.
     pub resource_dir: Option<PathBuf>,
+    /// Override the user agent
+    pub user_agent: Option<String>,
 }
 
 /// Configuration of Verso instance.
@@ -91,6 +93,13 @@ fn parse_cli_args() -> Result<CliArgs, getopts::Fail> {
         "out.html",
     );
 
+    opts.optopt(
+        "",
+        "user-agent",
+        "Override the user agent",
+        "'VersoView/1.0'",
+    );
+
     opts.optopt(
         "w",
         "width",
@@ -159,6 +168,8 @@ fn parse_cli_args() -> Result<CliArgs, getopts::Fail> {
         None
     };
 
+    let user_agent = matches.opt_str("user-agent");
+
     let mut window_attributes = winit::window::Window::default_attributes();
 
     let width = matches.opt_get::<u32>("width").unwrap_or_else(|e| {
@@ -216,12 +227,12 @@ fn parse_cli_args() -> Result<CliArgs, getopts::Fail> {
         window_attributes,
         devtools_port,
         profiler_settings,
+        user_agent,
     })
 }
 
 impl Config {
-    /// Create a new configuration for creating Verso instance. It must provide the path of
-    /// resources directory.
+    /// Create a new configuration for creating Verso instance.
     pub fn new() -> Self {
         let mut opts = default_opts();
         let args = parse_cli_args().unwrap_or_default();

src/verso.rs

@@ -108,6 +108,12 @@ impl Verso {
         let initial_url = config.args.url.clone();
         let with_panel = !config.args.no_panel;
         let window_settings = config.args.window_attributes.clone();
+        let user_agent: Cow<'static, str> = config
+            .args
+            .user_agent
+            .clone()
+            .unwrap_or_else(|| default_user_agent_string().to_string())
+            .into();
 
         config.init();
         // Reserving a namespace to create TopLevelBrowsingContextId.
@@ -275,7 +281,6 @@ impl Verso {
             BluetoothThreadFactory::new(embedder_sender.clone());
 
         // Create resource thread pool
-        let user_agent: Cow<'static, str> = default_user_agent_string().into();
         let (public_resource_threads, private_resource_threads) =
             resource_thread::new_resource_threads(
                 user_agent.clone(),