1 files changed, 145 insertions, 0 deletions
diff --git a/browser/fxr/content/permissions.js b/browser/fxr/content/permissions.js
new file mode 100644
index 0000000000..ee8d8fbd42
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+++ b/browser/fxr/content/permissions.js
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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* import-globals-from fxrui.js */
+
+/**
+ * Code to manage Permissions UI
+ *
+ * FxR on Desktop only supports granting permission for
+ * - Location
+ * - Camera
+ * - Microphone
+ * Any other permissions are automatically denied.
+ *
+ */
+
+// Base class for managing permissions in FxR on PC
+class FxrPermissionPromptPrototype {
+  constructor(aRequest, aBrowser, aCallback) {
+    this.request = aRequest;
+    this.targetBrowser = aBrowser;
+    this.responseCallback = aCallback;
+  }
+
+  showPrompt() {
+    // For now, all permissions default to denied. Testing for allow must be
+    // done manually until UI is finished:
+    // Bug 1594840 - Add UI for Web Permissions in FxR for Desktop
+    this.defaultDeny();
+  }
+
+  defaultDeny() {
+    this.handleResponse(false);
+  }
+
+  handleResponse(allowed) {
+    if (allowed) {
+      this.allow();
+    } else {
+      this.deny();
+    }
+
+    this.responseCallback();
+  }
+}
+
+// WebRTC-specific class implementation
+class FxrWebRTCPrompt extends FxrPermissionPromptPrototype {
+  showPrompt() {
+    for (let typeName of this.request.requestTypes) {
+      if (typeName !== "Microphone" && typeName !== "Camera") {
+        // Only Microphone and Camera requests are allowed. Automatically deny
+        // any other request.
+        this.defaultDeny();
+        return;
+      }
+    }
+
+    super.showPrompt();
+  }
+
+  allow() {
+    let { audioDevices, videoDevices } = this.request;
+
+    let principal = Services.scriptSecurityManager.createContentPrincipalFromOrigin(
+      this.request.origin
+    );
+
+    // For now, collect the first audio and video device by default. User
+    // selection will be enabled later:
+    // Bug 1594841 - Add UI to select device for WebRTC in FxR for Desktop
+    let allowedDevices = [];
+
+    if (audioDevices.length) {
+      allowedDevices.push(audioDevices[0].deviceIndex);
+    }
+
+    if (videoDevices.length) {
+      Services.perms.addFromPrincipal(
+        principal,
+        "MediaManagerVideo",
+        Services.perms.ALLOW_ACTION,
+        Services.perms.EXPIRE_SESSION
+      );
+      allowedDevices.push(videoDevices[0].deviceIndex);
+    }
+
+    // WebRTCChild doesn't currently care which actor
+    // this is sent to and just uses the windowID.
+    this.targetBrowser.sendMessageToActor(
+      "webrtc:Allow",
+      {
+        callID: this.request.callID,
+        windowID: this.request.windowID,
+        devices: allowedDevices,
+      },
+      "WebRTC"
+    );
+  }
+
+  deny() {
+    this.targetBrowser.sendMessageToActor(
+      "webrtc:Deny",
+      {
+        callID: this.request.callID,
+        windowID: this.request.windowID,
+      },
+      "WebRTC"
+    );
+  }
+}
+
+// Implementation for other, non-WebRTC web permission prompts
+class FxrContentPrompt extends FxrPermissionPromptPrototype {
+  showPrompt() {
+    // Only allow exactly one permission request here.
+    let types = this.request.types.QueryInterface(Ci.nsIArray);
+    if (types.length != 1) {
+      this.defaultDeny();
+      return;
+    }
+
+    // Only Location is supported from this type of request
+    let type = types.queryElementAt(0, Ci.nsIContentPermissionType).type;
+    if (type !== "geolocation") {
+      this.defaultDeny();
+      return;
+    }
+
+    // Override type so that it can be more easily interpreted by the code
+    // for the prompt.
+    type = "Location";
+    super.showPrompt();
+  }
+
+  allow() {
+    this.request.allow();
+  }
+
+  deny() {
+    this.request.cancel();
+  }
+}