feat: insecure room name warning

css/_labels.scss

@@ -0,0 +1,68 @@
+.large-video-labels {
+    display: flex;
+    position: absolute;
+    top: 30px;
+    right: 30px;
+    transition: right 0.5s;
+    z-index: $zindex3;
+
+    .circular-label {
+        align-items: center;
+        color: white;
+        display: flex;
+        font-weight: bold;
+        justify-content: center;
+        margin-left: 8px;
+        opacity: 0.8;
+    }
+
+    .circular-label {
+        background: #B8C7E0;
+    }
+
+    .circular-label.e2ee {
+        align-items: center;
+        background: #76CF9C;
+        display: flex;
+        justify-content: center;
+    }
+
+    .circular-label.file {
+        background: #FF5630;
+    }
+
+    .circular-label.local-rec {
+        background: #FF5630;
+    }
+
+    .circular-label.stream {
+        background: #0065FF;
+    }
+
+    .circular-label.insecure {
+        background: $defaultWarningColor;
+    }
+
+    .recording-label.center-message {
+        background: $videoStateIndicatorBackground;
+        bottom: 50%;
+        display: block;
+        left: 50%;
+        padding: 10px;
+        position: fixed;
+        transform: translate(-50%, -50%);
+        z-index: $centeredVideoLabelZ;
+    }
+}
+
+.circular-label {
+    background: $videoStateIndicatorBackground;
+    border-radius: 50%;
+    box-sizing: border-box;
+    cursor: default;
+    font-size: 13px;
+    height: $videoStateIndicatorSize;
+    line-height: $videoStateIndicatorSize;
+    text-align: center;
+    min-width: $videoStateIndicatorSize;
+}

css/_welcome_page.scss

@@ -71,9 +71,6 @@ body.welcome-page {
                 text-align: left;
                 color: #253858;
                 height: fit-content;
-                border-width: $welcomePageEnterRoomInputContainerBorderWidth;
-                border-style: $welcomePageEnterRoomInputContainerBorderStyle;
-                border-image: $welcomePageEnterRoomInputContainerBorderImage;
 
                 .enter-room-title {
                     display: $welcomePageEnterRoomTitleDisplay;
@@ -83,12 +80,26 @@ body.welcome-page {
                 }
 
                 .enter-room-input {
-                    border: none;
+                    border-width: $welcomePageEnterRoomInputContainerBorderWidth;
+                    border-style: $welcomePageEnterRoomInputContainerBorderStyle;
+                    border-image: $welcomePageEnterRoomInputContainerBorderImage;
                     display: inline-block;
                     width: 100%;
                     font-size: 14px;
                 }
 
+                .insecure-room-name-warning {
+                    align-items: center;
+                    color: $defaultWarningColor;
+                    display: flex;
+                    flex-direction: row;
+                    margin-top: 5px;
+
+                    svg {
+                        fill: $defaultWarningColor
+                    }
+                }
+
                 ::placeholder {
                     color: #253858;
                 }

css/main.scss

@@ -75,6 +75,7 @@ $flagsImagePath: "../images/";
 @import 'filmstrip/tile_view_overrides';
 @import 'filmstrip/vertical_filmstrip';
 @import 'filmstrip/vertical_filmstrip_overrides';
+@import 'labels';
 @import 'unsupported-browser/main';
 @import 'modals/invite/add-people';
 @import 'deep-linking/main';

css/modals/video-quality/_video-quality.scss

@@ -144,65 +144,3 @@
 #videoResolutionLabel {
     z-index: $zindex3 + 1;
 }
-
-.large-video-labels {
-    display: flex;
-    position: absolute;
-    top: 30px;
-    right: 30px;
-    transition: right 0.5s;
-    z-index: $zindex3;
-
-    .circular-label {
-        color: white;
-        font-weight: bold;
-        margin-left: 8px;
-        opacity: 0.8;
-    }
-
-    .circular-label {
-        background: #B8C7E0;
-    }
-
-    .circular-label.e2ee {
-        align-items: center;
-        background: #76CF9C;
-        display: flex;
-        justify-content: center;
-    }
-
-    .circular-label.file {
-        background: #FF5630;
-    }
-
-    .circular-label.local-rec {
-        background: #FF5630;
-    }
-
-    .circular-label.stream {
-        background: #0065FF;
-    }
-
-    .recording-label.center-message {
-        background: $videoStateIndicatorBackground;
-        bottom: 50%;
-        display: block;
-        left: 50%;
-        padding: 10px;
-        position: fixed;
-        transform: translate(-50%, -50%);
-        z-index: $centeredVideoLabelZ;
-    }
-}
-
-.circular-label {
-    background: $videoStateIndicatorBackground;
-    border-radius: 50%;
-    box-sizing: border-box;
-    cursor: default;
-    font-size: 13px;
-    height: $videoStateIndicatorSize;
-    line-height: $videoStateIndicatorSize;
-    text-align: center;
-    min-width: $videoStateIndicatorSize;
-}

lang/main.json

@@ -561,6 +561,9 @@
     "sectionList": {
         "pullToRefresh": "Pull to refresh"
     },
+    "security": {
+        "insecureRoomNameWarning": "The room name is insecure. Unwanted participants may join your conference."
+    },
     "settings": {
         "calendar": {
             "about": "The {{appName}} calendar integration is used to securely access your calendar so it can read upcoming events.",

package-lock.json

@@ -19178,6 +19178,11 @@
           "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg=="
         }
       }
+    },
+    "zxcvbn": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/zxcvbn/-/zxcvbn-4.4.2.tgz",
+      "integrity": "sha1-KOwXzwl0PtyrBW3dixsGJizHPDA="
     }
   }
 }

package.json

@@ -93,7 +93,8 @@
     "util": "0.12.1",
     "uuid": "3.1.0",
     "windows-iana": "^3.1.0",
-    "xmldom": "0.1.27"
+    "xmldom": "0.1.27",
+    "zxcvbn": "4.4.2"
   },
   "devDependencies": {
     "@babel/core": "7.5.5",

react/features/base/icons/svg/index.js

@@ -86,3 +86,4 @@ export { default as IconVideoQualitySD } from './SD.svg';
 export { default as IconVolume } from './volume.svg';
 export { default as IconVolumeEmpty } from './volume-empty.svg';
 export { default as IconVolumeOff } from './volume-off.svg';
+export { default as IconWarning } from './warning.svg';

react/features/base/icons/svg/warning.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="24" viewBox="0 0 24 24" width="24"><path d="M0 0h24v24H0z" fill="none"/><path d="M1 21h22L12 2 1 21zm12-3h-2v-2h2v2zm0-4h-2v-4h2v4z"/></svg>

react/features/base/util/helpers.js

@@ -1,5 +1,29 @@
 // @flow
 
+/**
+ * A helper function that behaves similar to Object.assign, but only reassigns a
+ * property in target if it's defined in source.
+ *
+ * @param {Object} target - The target object to assign the values into.
+ * @param {Object} source - The source object.
+ * @returns {Object}
+ */
+export function assignIfDefined(target: Object, source: Object) {
+    const to = Object(target);
+
+    for (const nextKey in source) {
+        if (source.hasOwnProperty(nextKey)) {
+            const value = source[nextKey];
+
+            if (typeof value !== 'undefined') {
+                to[nextKey] = value;
+            }
+        }
+    }
+
+    return to;
+}
+
 /**
  * Creates a deferred object.
  *
@@ -72,30 +96,6 @@ export function getJitsiMeetGlobalNS() {
     return window.JitsiMeetJS.app;
 }
 
-/**
- * A helper function that behaves similar to Object.assign, but only reassigns a
- * property in target if it's defined in source.
- *
- * @param {Object} target - The target object to assign the values into.
- * @param {Object} source - The source object.
- * @returns {Object}
- */
-export function assignIfDefined(target: Object, source: Object) {
-    const to = Object(target);
-
-    for (const nextKey in source) {
-        if (source.hasOwnProperty(nextKey)) {
-            const value = source[nextKey];
-
-            if (typeof value !== 'undefined') {
-                to[nextKey] = value;
-            }
-        }
-    }
-
-    return to;
-}
-
 /**
  * Prints the error and reports it to the global error handler.
  *

react/features/base/util/isInsecureRoomName.js

@@ -0,0 +1,13 @@
+// @flow
+
+import zxcvbn from 'zxcvbn';
+
+/**
+ * Returns true if the room name is considered a weak (insecure) one.
+ *
+ * @param {string} roomName - The room name.
+ * @returns {boolean}
+ */
+export default function isInsecureRoomName(roomName: string = ''): boolean {
+    return zxcvbn(roomName).score < 3;
+}

react/features/conference/components/AbstractInsecureRoomNameLabel.js

@@ -0,0 +1,57 @@
+// @flow
+
+import { PureComponent } from 'react';
+
+import isInsecureRoomName from '../../base/util/isInsecureRoomName';
+
+type Props = {
+
+    /**
+     * True of the label should be visible.
+     */
+    _visible: boolean;
+
+    /**
+     * Function to be used to translate i18n labels.
+     */
+    t: Function
+}
+
+/**
+ * Abstrsact class for the {@Code InsecureRoomNameLabel} component.
+ */
+export default class AbstractInsecureRoomNameLabel extends PureComponent<Props> {
+    /**
+     * Implements {@code Component#render}.
+     *
+     * @inheritdoc
+     */
+    render() {
+        if (!this.props._visible) {
+            return null;
+        }
+
+        return this._render();
+    }
+
+    /**
+     * Renders the platform dependant content.
+     *
+     * @returns {ReactElement}
+     */
+    _render: () => Object;
+}
+
+/**
+ * Maps part of the Redux state to the props of this component.
+ *
+ * @param {Object} state - The Redux state.
+ * @returns {Props}
+ */
+export function _mapStateToProps(state: Object): $Shape<Props> {
+    const { room } = state['features/base/conference'];
+
+    return {
+        _visible: room && isInsecureRoomName(room)
+    };
+}

react/features/conference/components/AbstractLabels.js

@@ -10,6 +10,8 @@ import { TranscribingLabel } from '../../transcribing';
 import { shouldDisplayTileView } from '../../video-layout';
 import { VideoQualityLabel } from '../../video-quality';
 
+import { InsecureRoomNameLabel } from '.';
+
 /**
  * The type of the React {@code Component} props of {@link AbstractLabels}.
  */
@@ -84,6 +86,18 @@ export default class AbstractLabels<P: Props, S> extends Component<P, S> {
         );
     }
 
+    /**
+     * Renders the {@code InsecureRoomNameLabel}.
+     *
+     * @protected
+     * @returns {React$Element}
+     */
+    _renderInsecureRoomNameLabel() {
+        return (
+            <InsecureRoomNameLabel />
+        );
+    }
+
     /**
      * Renders the {@code VideoQualityLabel} that is platform independent.
      *

react/features/conference/components/native/InsecureRoomNameExpandedLabel.js

@@ -0,0 +1,36 @@
+// @flow
+
+import { translate } from '../../../base/i18n';
+import { ExpandedLabel, type Props as AbstractProps } from '../../../base/label';
+
+import { INSECURE_ROOM_NAME_LABEL_COLOR } from './styles';
+
+type Props = AbstractProps & {
+    t: Function
+}
+
+/**
+ * A react {@code Component} that implements an expanded label as tooltip-like
+ * component to explain the meaning of the {@code InsecureRoomNameExpandedLabel}.
+ */
+class InsecureRoomNameExpandedLabel extends ExpandedLabel<Props> {
+    /**
+     * Returns the color this expanded label should be rendered with.
+     *
+     * @returns {string}
+     */
+    _getColor() {
+        return INSECURE_ROOM_NAME_LABEL_COLOR;
+    }
+
+    /**
+     * Returns the label specific text of this {@code ExpandedLabel}.
+     *
+     * @returns {string}
+     */
+    _getLabel() {
+        return this.props.t('security.insecureRoomNameWarning');
+    }
+}
+
+export default translate(InsecureRoomNameExpandedLabel);

react/features/conference/components/native/InsecureRoomNameLabel.js

@@ -0,0 +1,31 @@
+// @flow
+
+import React from 'react';
+
+import { IconWarning } from '../../../base/icons';
+import { CircularLabel } from '../../../base/label';
+import { connect } from '../../../base/redux';
+
+import AbstractInsecureRoomNameLabel, { _mapStateToProps } from '../AbstractInsecureRoomNameLabel';
+
+import styles from './styles';
+
+/**
+ * Renders a label indicating that we are in a room with an insecure name.
+ */
+class InsecureRoomNameLabel extends AbstractInsecureRoomNameLabel {
+    /**
+     * Renders the platform dependant content.
+     *
+     * @inheritdoc
+     */
+    _render() {
+        return (
+            <CircularLabel
+                icon = { IconWarning }
+                style = { styles.insecureRoomNameLabel } />
+        );
+    }
+}
+
+export default connect(_mapStateToProps)(InsecureRoomNameLabel);

react/features/conference/components/native/Labels.js

@@ -20,6 +20,8 @@ import AbstractLabels, {
     type Props as AbstractLabelsProps
 } from '../AbstractLabels';
 import { shouldDisplayNotifications } from '../../functions';
+
+import InsecureRoomNameExpandedLabel from './InsecureRoomNameExpandedLabel';
 import styles from './styles';
 
 /**
@@ -32,14 +34,6 @@ type Props = AbstractLabelsProps & {
      */
     t: Function,
 
-    /**
-     * The indicator which determines whether the UI is reduced (to accommodate
-     * smaller display areas).
-     *
-     * @private
-     */
-    _reducedUI: boolean,
-
     /**
      * True if the labels should be visible, false otherwise.
      */
@@ -85,6 +79,7 @@ const LABEL_ID_QUALITY = 'quality';
 const LABEL_ID_RECORDING = 'recording';
 const LABEL_ID_STREAMING = 'streaming';
 const LABEL_ID_TRANSCRIBING = 'transcribing';
+const LABEL_ID_INSECURE_ROOM_NAME = 'insecure-room-name';
 
 /**
  * The {@code ExpandedLabel} components to be rendered for the individual
@@ -104,7 +99,8 @@ const EXPANDED_LABELS = {
             mode: JitsiRecordingConstants.mode.STREAM
         }
     },
-    transcribing: TranscribingExpandedLabel
+    transcribing: TranscribingExpandedLabel,
+    'insecure-room-name': InsecureRoomNameExpandedLabel
 };
 
 /**
@@ -159,7 +155,7 @@ class Labels extends AbstractLabels<Props, State> {
         }
 
         const wide = !isNarrowAspectRatio(this);
-        const { _filmstripVisible, _reducedUI } = this.props;
+        const { _filmstripVisible } = this.props;
 
         return (
             <View
@@ -200,24 +196,24 @@ class Labels extends AbstractLabels<Props, State> {
                             this._renderTranscribingLabel()
                         }
                     </TouchableOpacity>
-                    {/*
-                      * Emil, Lyubomir, Nichole, and Zoli said that the Labels
-                      * should not be rendered in Picture-in-Picture. Saul
-                      * argued that the recording Labels should be rendered. As
-                      * a temporary compromise, don't render the
-                      * VideoQualityLabel at least because it's not that
-                      * important.
-                      */
-                        _reducedUI || (
-                            <TouchableOpacity
-                                onLayout = {
-                                    this._createOnLayout(LABEL_ID_QUALITY) }
-                                onPress = {
-                                    this._createOnPress(LABEL_ID_QUALITY) } >
-                                { this._renderVideoQualityLabel() }
-                            </TouchableOpacity>
-                        )
-                    }
+                    <TouchableOpacity
+                        onLayout = {
+                            this._createOnLayout(LABEL_ID_INSECURE_ROOM_NAME)
+                        }
+                        onPress = {
+                            this._createOnPress(LABEL_ID_INSECURE_ROOM_NAME)
+                        } >
+                        {
+                            this._renderInsecureRoomNameLabel()
+                        }
+                    </TouchableOpacity>
+                    <TouchableOpacity
+                        onLayout = {
+                            this._createOnLayout(LABEL_ID_QUALITY) }
+                        onPress = {
+                            this._createOnPress(LABEL_ID_QUALITY) } >
+                        { this._renderVideoQualityLabel() }
+                    </TouchableOpacity>
                 </View>
                 <View
                     style = { [
@@ -339,11 +335,13 @@ class Labels extends AbstractLabels<Props, State> {
         return null;
     }
 
-    _renderRecordingLabel: string => React$Element<*>;
+    _renderRecordingLabel: string => React$Element<any>;
+
+    _renderTranscribingLabel: () => React$Element<any>;
 
-    _renderTranscribingLabel: () => React$Element<*>
+    _renderInsecureRoomNameLabel: () => React$Element<any>;
 
-    _renderVideoQualityLabel: () => React$Element<*>;
+    _renderVideoQualityLabel: () => React$Element<any>;
 }
 
 /**
@@ -352,16 +350,11 @@ class Labels extends AbstractLabels<Props, State> {
  *
  * @param {Object} state - The redux state.
  * @private
- * @returns {{
- *     _filmstripVisible: boolean,
- *     _reducedUI: boolean,
- *     _visible: boolean
- * }}
+ * @returns {Props}
  */
 function _mapStateToProps(state) {
     return {
         ..._abstractMapStateToProps(state),
-        _reducedUI: state['features/base/responsive-ui'].reducedUI,
         _visible: !shouldDisplayNotifications(state)
     };
 }

react/features/conference/components/native/index.js

@@ -2,3 +2,4 @@
 
 export { default as Conference } from './Conference';
 export { default as renderConferenceTimer } from './ConferenceTimerDisplay';
+export { default as InsecureRoomNameLabel } from './InsecureRoomNameLabel';

react/features/conference/components/native/styles.js

@@ -3,6 +3,7 @@ import { ColorSchemeRegistry, schemeColor } from '../../../base/color-scheme';
 import { FILMSTRIP_SIZE } from '../../../filmstrip';
 
 export const NAVBAR_GRADIENT_COLORS = [ '#000000FF', '#00000000' ];
+export const INSECURE_ROOM_NAME_LABEL_COLOR = ColorPalette.warning;
 
 // From brand guideline
 const BOTTOM_GRADIENT_HEIGHT = 290;
@@ -167,6 +168,10 @@ export default {
         // On iPhone X there is the notch. In the two cases BoxModel.margin is
         // not enough.
         top: BoxModel.margin * 3
+    },
+
+    insecureRoomNameLabel: {
+        backgroundColor: INSECURE_ROOM_NAME_LABEL_COLOR
     }
 };
 

react/features/conference/components/web/InsecureRoomNameLabel.js

@@ -0,0 +1,35 @@
+// @flow
+
+import Tooltip from '@atlaskit/tooltip';
+import React from 'react';
+
+import { translate } from '../../../base/i18n';
+import { IconWarning } from '../../../base/icons';
+import { CircularLabel } from '../../../base/label';
+import { connect } from '../../../base/redux';
+
+import AbstractInsecureRoomNameLabel, { _mapStateToProps } from '../AbstractInsecureRoomNameLabel';
+
+/**
+ * Renders a label indicating that we are in a room with an insecure name.
+ */
+class InsecureRoomNameLabel extends AbstractInsecureRoomNameLabel {
+    /**
+     * Renders the platform dependant content.
+     *
+     * @inheritdoc
+     */
+    _render() {
+        return (
+            <Tooltip
+                content = { this.props.t('security.insecureRoomNameWarning') }
+                position = 'left'>
+                <CircularLabel
+                    className = 'insecure'
+                    icon = { IconWarning } />
+            </Tooltip>
+        );
+    }
+}
+
+export default translate(connect(_mapStateToProps)(InsecureRoomNameLabel));

react/features/conference/components/web/Labels.js

@@ -95,6 +95,9 @@ class Labels extends AbstractLabels<Props, State> {
                     this.props._showVideoQualityLabel
                         && this._renderVideoQualityLabel()
                 }
+                {
+                    this._renderInsecureRoomNameLabel()
+                }
             </div>
         );
     }
@@ -107,6 +110,8 @@ class Labels extends AbstractLabels<Props, State> {
 
     _renderTranscribingLabel: () => React$Element<*>;
 
+    _renderInsecureRoomNameLabel: () => React$Element<any>;
+
     _renderVideoQualityLabel: () => React$Element<*>;
 }
 

react/features/conference/components/web/index.js

@@ -2,4 +2,4 @@
 
 export { default as Conference } from './Conference';
 export { default as renderConferenceTimer } from './ConferenceTimerDisplay';
-
+export { default as InsecureRoomNameLabel } from './InsecureRoomNameLabel';

react/features/welcome/components/AbstractWelcomePage.js

@@ -6,6 +6,7 @@ import type { Dispatch } from 'redux';
 
 import { createWelcomePageEvent, sendAnalytics } from '../../analytics';
 import { appNavigate } from '../../app';
+import isInsecureRoomName from '../../base/util/isInsecureRoomName';
 import { isCalendarEnabled } from '../../calendar-sync';
 import { isRecentListEnabled } from '../../recent-list/functions';
 
@@ -75,6 +76,7 @@ export class AbstractWelcomePage extends Component<Props, *> {
     state = {
         animateTimeoutId: undefined,
         generatedRoomname: '',
+        insecureRoomName: false,
         joining: false,
         room: '',
         roomPlaceholder: '',
@@ -95,6 +97,7 @@ export class AbstractWelcomePage extends Component<Props, *> {
             = this._animateRoomnameChanging.bind(this);
         this._onJoin = this._onJoin.bind(this);
         this._onRoomChange = this._onRoomChange.bind(this);
+        this._renderInsecureRoomNameWarning = this._renderInsecureRoomNameWarning.bind(this);
         this._updateRoomname = this._updateRoomname.bind(this);
     }
 
@@ -160,6 +163,13 @@ export class AbstractWelcomePage extends Component<Props, *> {
         clearTimeout(this.state.updateTimeoutId);
     }
 
+    /**
+     * Renders the insecure room name warning.
+     *
+     * @returns {ReactElement}
+     */
+    _doRenderInsecureRoomNameWarning: () => React$Component<any>;
+
     _onJoin: () => void;
 
     /**
@@ -202,7 +212,25 @@ export class AbstractWelcomePage extends Component<Props, *> {
      * @returns {void}
      */
     _onRoomChange(value: string) {
-        this.setState({ room: value });
+        this.setState({
+            room: value,
+            insecureRoomName: value && isInsecureRoomName(value)
+        });
+    }
+
+    _renderInsecureRoomNameWarning: () => React$Component<any>;;
+
+    /**
+     * Renders the insecure room name warning if needed.
+     *
+     * @returns {ReactElement}
+     */
+    _renderInsecureRoomNameWarning() {
+        if (this.state.insecureRoomName) {
+            return this._doRenderInsecureRoomNameWarning();
+        }
+
+        return null;
     }
 
     _updateRoomname: () => void;

react/features/welcome/components/WelcomePage.native.js

@@ -13,7 +13,7 @@ import { getName } from '../../app';
 
 import { ColorSchemeRegistry } from '../../base/color-scheme';
 import { translate } from '../../base/i18n';
-import { Icon, IconMenu } from '../../base/icons';
+import { Icon, IconMenu, IconWarning } from '../../base/icons';
 import { MEDIA_TYPE } from '../../base/media';
 import { Header, LoadingIndicator, Text } from '../../base/react';
 import { connect } from '../../base/redux';
@@ -119,6 +119,28 @@ class WelcomePage extends AbstractWelcomePage {
         return this._renderFullUI();
     }
 
+    /**
+     * Renders the insecure room name warning.
+     *
+     * @inheritdoc
+     */
+    _doRenderInsecureRoomNameWarning() {
+        return (
+            <View
+                style = { [
+                    styles.messageContainer,
+                    styles.insecureRoomNameWarningContainer
+                ] }>
+                <Icon
+                    src = { IconWarning }
+                    style = { styles.insecureRoomNameWarningIcon } />
+                <Text style = { styles.insecureRoomNameWarningText }>
+                    { this.props.t('security.insecureRoomNameWarning') }
+                </Text>
+            </View>
+        );
+    }
+
     /**
      * Constructs a style array to handle the hint box animation.
      *
@@ -127,6 +149,7 @@ class WelcomePage extends AbstractWelcomePage {
      */
     _getHintBoxStyle() {
         return [
+            styles.messageContainer,
             styles.hintContainer,
             {
                 opacity: this.state.hintBoxAnimation
@@ -283,6 +306,9 @@ class WelcomePage extends AbstractWelcomePage {
                                 style = { styles.textInput }
                                 underlineColorAndroid = 'transparent'
                                 value = { this.state.room } />
+                            {
+                                this._renderInsecureRoomNameWarning()
+                            }
                             {
                                 this._renderHintBox()
                             }

react/features/welcome/components/WelcomePage.web.js

@@ -3,6 +3,7 @@
 import React from 'react';
 
 import { translate } from '../../base/i18n';
+import { Icon, IconWarning } from '../../base/icons';
 import { Watermarks } from '../../base/react';
 import { connect } from '../../base/redux';
 import { isMobileBrowser } from '../../base/environment/utils';
@@ -209,6 +210,7 @@ class WelcomePage extends AbstractWelcomePage {
                                     title = { t('welcomepage.roomNameAllowedChars') }
                                     type = 'text'
                                     value = { this.state.room } />
+                                { this._renderInsecureRoomNameWarning() }
                             </form>
                         </div>
                         <div
@@ -233,6 +235,22 @@ class WelcomePage extends AbstractWelcomePage {
         );
     }
 
+    /**
+     * Renders the insecure room name warning.
+     *
+     * @inheritdoc
+     */
+    _doRenderInsecureRoomNameWarning() {
+        return (
+            <div className = 'insecure-room-name-warning'>
+                <Icon src = { IconWarning } />
+                <span>
+                    { this.props.t('security.insecureRoomNameWarning') }
+                </span>
+            </div>
+        );
+    }
+
     /**
      * Prevents submission of the form and delegates join logic.
      *

react/features/welcome/components/styles.js

@@ -108,15 +108,8 @@ export default {
      * Container for the hint box.
      */
     hintContainer: {
-        backgroundColor: ColorPalette.white,
-        borderColor: ColorPalette.white,
-        borderRadius: 4,
-        borderWidth: 1,
         flexDirection: 'column',
-        marginVertical: 5,
-        overflow: 'hidden',
-        paddingHorizontal: BoxModel.padding,
-        paddingVertical: 2 * BoxModel.padding
+        overflow: 'hidden'
     },
 
     /**
@@ -148,6 +141,16 @@ export default {
         padding: BoxModel.padding
     },
 
+    messageContainer: {
+        backgroundColor: ColorPalette.white,
+        borderColor: ColorPalette.white,
+        borderRadius: 4,
+        borderWidth: 1,
+        marginVertical: 5,
+        paddingHorizontal: BoxModel.padding,
+        paddingVertical: 2 * BoxModel.padding
+    },
+
     /**
      * The style of the top-level container/{@code View} of
      * {@code LocalVideoTrackUnderlay}.
@@ -280,6 +283,23 @@ export default {
         textAlign: 'center'
     },
 
+    insecureRoomNameWarningContainer: {
+        alignItems: 'center',
+        flexDirection: 'row',
+        paddingHorizontal: 5
+    },
+
+    insecureRoomNameWarningIcon: {
+        color: ColorPalette.warning,
+        fontSize: 24,
+        marginRight: 10
+    },
+
+    insecureRoomNameWarningText: {
+        color: ColorPalette.warning,
+        flex: 1
+    },
+
     /**
      * The style of the top-level container of {@code WelcomePage}.
      */

webpack.config.js

@@ -179,7 +179,7 @@ module.exports = [
         entry: {
             'app.bundle': './app.js'
         },
-        performance: getPerformanceHints(3 * 1024 * 1024)
+        performance: getPerformanceHints(4 * 1024 * 1024)
     }),
     Object.assign({}, config, {
         entry: {