Fix geosolutions-it#10506 Adding possibility to fetch legends images using Bearer token (geosolutions-it#10507)

Author: MV88

web/client/components/misc/SecureImage.jsx

@@ -0,0 +1,69 @@
+/**
+ * Copyright 2024, GeoSolutions Sas.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import React, { useEffect, useState } from 'react';
+import axios from 'axios';
+
+import { getAuthenticationMethod } from '../../utils/SecurityUtils';
+
+
+const SecureImage = ({
+    alt,
+    src,
+    ...props
+}) => {
+    const [imageSrc, setImageSrc] = useState('');
+
+    // Function to validate the image once it loads
+    const validateImg = (imgElement) => {
+        // Implement your validation logic here
+        // For example, check image dimensions, aspect ratio, etc.
+        if (imgElement.naturalWidth === 0 || imgElement.naturalHeight === 0) {
+            console.error('Image validation failed: Image is not valid.');
+        }
+    };
+
+    useEffect(() => {
+        const authMethod = getAuthenticationMethod(src);
+
+        if (authMethod === "bearer") {
+            axios.get(src, {
+                responseType: 'blob'
+            })
+                .then((response) => {
+                    const imageUrl = URL.createObjectURL(response.data);
+                    setImageSrc(imageUrl);
+                })
+                .catch((error) => {
+                    console.error('Error fetching image:', error);
+                });
+        } else {
+            setImageSrc(src);
+        }
+
+        // Clean up the URL object when the component unmounts
+        return () => {
+            if (imageSrc) {
+                URL.revokeObjectURL(imageSrc);
+            }
+        };
+    }, [src]);
+
+    return (
+        <img
+            alt={alt}
+            onError={props.onImgError}
+            onLoad={(e) => validateImg(e.target)}
+            src={imageSrc}
+            style={props.style}
+            {...props}
+        />
+    );
+};
+
+export default SecureImage;

web/client/plugins/TOC/components/Legend.jsx

@@ -14,11 +14,12 @@ import PropTypes from 'prop-types';
 import React from 'react';
 
 import {
-    addAuthenticationParameter,
     addAuthenticationToSLD,
     clearNilValuesForParams
 } from '../../../utils/SecurityUtils';
 import Message from '../../../components/I18N/Message';
+import SecureImage from '../../../components/misc/SecureImage';
+
 import { randomInt } from '../../../utils/RandomUtils';
 
 /**
@@ -85,23 +86,26 @@ class Legend extends React.Component {
 
             const cleanParams = clearNilValuesForParams(layer.params);
             const scale = this.getScale(props);
-            let query = assign({}, {
-                service: "WMS",
-                request: "GetLegendGraphic",
-                format: "image/png",
-                height: props.legendHeight,
-                width: props.legendWidth,
-                layer: layer.name,
-                style: layer.style || null,
-                version: layer.version || "1.3.0",
-                SLD_VERSION: "1.1.0",
-                LEGEND_OPTIONS: props.legendOptions
-            }, layer.legendParams || {},
-            props.language && layer.localizedLayerStyles ? {LANGUAGE: props.language} : {},
-            addAuthenticationToSLD(cleanParams || {}, props.layer),
-            cleanParams && cleanParams.SLD_BODY ? {SLD_BODY: cleanParams.SLD_BODY} : {},
-            scale !== null ? { SCALE: scale } : {});
-            addAuthenticationParameter(url, query);
+            let query = assign(
+                {},
+                {
+                    service: "WMS",
+                    request: "GetLegendGraphic",
+                    format: "image/png",
+                    height: props.legendHeight,
+                    width: props.legendWidth,
+                    layer: layer.name,
+                    style: layer.style || null,
+                    version: layer.version || "1.3.0",
+                    SLD_VERSION: "1.1.0",
+                    LEGEND_OPTIONS: props.legendOptions
+                },
+                layer.legendParams || {},
+                props.language && layer.localizedLayerStyles ? {LANGUAGE: props.language} : {},
+                addAuthenticationToSLD(cleanParams || {}, props.layer),
+                cleanParams && cleanParams.SLD_BODY ? {SLD_BODY: cleanParams.SLD_BODY} : {},
+                scale !== null ? { SCALE: scale } : {}
+            );
 
             return urlUtil.format({
                 host: urlObj.host,
@@ -114,7 +118,15 @@ class Legend extends React.Component {
     }
     render() {
         if (!this.state.error && this.props.layer && this.props.layer.type === "wms" && this.props.layer.url) {
-            return <img onError={this.onImgError} onLoad={(e) => this.validateImg(e.target)} src={this.getUrl(this.props)} style={this.props.style}/>;
+            const url = this.getUrl(this.props);
+            return (
+                <SecureImage
+                    onError={this.onImgError}
+                    onLoad={(e) => this.validateImg(e.target)}
+                    src={url}
+                    style={this.props.style}
+                />
+            );
         }
         return <Message msgId="layerProperties.legenderror" />;
     }

web/client/plugins/TOC/components/__tests__/Legend-test.jsx

@@ -11,11 +11,10 @@ import React from 'react';
 import ReactDOM from 'react-dom';
 import Rx from 'rxjs';
 import url from 'url';
+import * as TestUtils from 'react-dom/test-utils';
 
 import Legend from '../Legend';
 
-import * as TestUtils from 'react-dom/test-utils';
-
 describe("test the Layer legend", () => {
     beforeEach((done) => {
         document.body.innerHTML = '<div id="container"></div>';
@@ -176,13 +175,15 @@ describe("test the Layer legend", () => {
             "name": "layer3",
             "format": "image/png"
         };
-        ReactDOM.render(
-            <Legend
-                layer={layer}
-                currentZoomLvl={2.3456}
-                scales={[10000, 5000, 2000, 1000]}
-            />,
-            document.getElementById("container"));
+        TestUtils.act(() => {
+            ReactDOM.render(
+                <Legend
+                    layer={layer}
+                    currentZoomLvl={2.3456}
+                    scales={[10000, 5000, 2000, 1000]}
+                />,
+                document.getElementById("container"));
+        });
         const legendImage = document.querySelector("img");
         expect(legendImage).toBeTruthy();
         const { query } = url.parse(legendImage.getAttribute('src'), true);
@@ -197,13 +198,15 @@ describe("test the Layer legend", () => {
             "name": "layer3",
             "format": "image/png"
         };
-        ReactDOM.render(
-            <Legend
-                layer={layer}
-                currentZoomLvl={10}
-                scales={[10000, 5000, 2000, 1000]}
-            />,
-            document.getElementById("container"));
+        TestUtils.act(() => {
+            ReactDOM.render(
+                <Legend
+                    layer={layer}
+                    currentZoomLvl={10}
+                    scales={[10000, 5000, 2000, 1000]}
+                />,
+                document.getElementById("container"));
+        });
         const legendImage = document.querySelector("img");
         expect(legendImage).toBeTruthy();
         const { query } = url.parse(legendImage.getAttribute('src'), true);