clean-up navigation

security: check target and source origin before executing JS url

implement replacement-enabled flag as a HistoryEntryReplacement enum

add source origin string on loaddata

add LoadOrigin

iframe: remove optional load-data

auxiliaries: add load-data into info

constellation: remove url from Pipeline::new

check load origin: link to whatwg issue

switch loadorigin toplevel to constellation

components/script_traits/lib.rs

@@ -62,7 +62,8 @@ use webrender_api::{
 use webvr_traits::{WebVREvent, WebVRMsg};
 
 pub use crate::script_msg::{
-    DOMMessage, SWManagerMsg, SWManagerSenders, ScopeThings, ServiceWorkerMsg,
+    DOMMessage, HistoryEntryReplacement, SWManagerMsg, SWManagerSenders, ScopeThings,
+    ServiceWorkerMsg,
 };
 pub use crate::script_msg::{
     EventResult, IFrameSize, IFrameSizeMsg, LayoutMsg, LogEntry, ScriptMsg,
@@ -117,10 +118,24 @@ pub enum LayoutControlMsg {
     PaintMetric(Epoch, u64),
 }
 
+/// The origin where a given load was initiated.
+/// Useful for origin checks, for example before evaluation a JS URL.
+#[derive(Clone, Debug, Deserialize, Serialize)]
+pub enum LoadOrigin {
+    /// A load originating in the constellation.
+    Constellation,
+    /// A load originating in webdriver.
+    WebDriver,
+    /// A load originating in script.
+    Script(ImmutableOrigin),
+}
+
 /// can be passed to `LoadUrl` to load a page with GET/POST
 /// parameters or headers
 #[derive(Clone, Debug, Deserialize, Serialize)]
 pub struct LoadData {
+    /// The origin where the load started.
+    pub load_origin: LoadOrigin,
     /// The URL.
     pub url: ServoUrl,
     /// The creator pipeline id if this is an about:blank load.
@@ -160,12 +175,14 @@ pub enum JsEvalResult {
 impl LoadData {
     /// Create a new `LoadData` object.
     pub fn new(
+        load_origin: LoadOrigin,
         url: ServoUrl,
         creator_pipeline_id: Option<PipelineId>,
         referrer: Option<Referrer>,
         referrer_policy: Option<ReferrerPolicy>,
     ) -> LoadData {
         LoadData {
+            load_origin,
             url: url,
             creator_pipeline_id: creator_pipeline_id,
             method: Method::GET,
@@ -289,7 +306,12 @@ pub enum ConstellationControlMsg {
     NotifyVisibilityChange(PipelineId, BrowsingContextId, bool),
     /// Notifies script thread that a url should be loaded in this iframe.
     /// PipelineId is for the parent, BrowsingContextId is for the nested browsing context
-    Navigate(PipelineId, BrowsingContextId, LoadData, bool),
+    NavigateIframe(
+        PipelineId,
+        BrowsingContextId,
+        LoadData,
+        HistoryEntryReplacement,
+    ),
     /// Post a message to a given window.
     PostMessage {
         /// The target of the message.
@@ -376,7 +398,7 @@ impl fmt::Debug for ConstellationControlMsg {
             SetDocumentActivity(..) => "SetDocumentActivity",
             ChangeFrameVisibilityStatus(..) => "ChangeFrameVisibilityStatus",
             NotifyVisibilityChange(..) => "NotifyVisibilityChange",
-            Navigate(..) => "Navigate",
+            NavigateIframe(..) => "NavigateIframe",
             PostMessage { .. } => "PostMessage",
             UpdatePipelineId(..) => "UpdatePipelineId",
             UpdateHistoryState(..) => "UpdateHistoryState",
@@ -659,6 +681,8 @@ pub enum IFrameSandboxState {
 /// Specifies the information required to load an auxiliary browsing context.
 #[derive(Debug, Deserialize, Serialize)]
 pub struct AuxiliaryBrowsingContextLoadInfo {
+    /// Load data containing the url to load
+    pub load_data: LoadData,
     /// The pipeline opener browsing context.
     pub opener_pipeline_id: PipelineId,
     /// The new top-level ID for the auxiliary.
@@ -684,7 +708,7 @@ pub struct IFrameLoadInfo {
     pub is_private: bool,
     /// Wether this load should replace the current entry (reload). If true, the current
     /// entry will be replaced instead of a new entry being added.
-    pub replace: bool,
+    pub replace: HistoryEntryReplacement,
 }
 
 /// Specifies the information required to load a URL in an iframe.
@@ -693,7 +717,7 @@ pub struct IFrameLoadInfoWithData {
     /// The information required to load an iframe.
     pub info: IFrameLoadInfo,
     /// Load data containing the url to load
-    pub load_data: Option<LoadData>,
+    pub load_data: LoadData,
     /// The old pipeline ID for this iframe, if a page was previously loaded.
     pub old_pipeline_id: Option<PipelineId>,
     /// Sandbox type of this iframe