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| (Empty) | |
| 1 <html> |
| 2 <!-- This page can create whatever iframe structure you want, across whatever |
| 3 sites you want. This is useful for testing site isolation. |
| 4 |
| 5 Example usage in a browsertest, explained: |
| 6 |
| 7 GURL url = |
| 8 test_server()->GetURL("a.com", "/cross_site_iframe_factory.html?a(b(c,d))"); |
| 9 |
| 10 When you navigate to the above URL, the outer document (on a.com) will create a |
| 11 single iframe: |
| 12 |
| 13 <iframe src="http://b.com:1234/cross_site_iframe_factory.html?b(c(),d())"> |
| 14 |
| 15 Inside of which, then, are created the two leaf iframes: |
| 16 |
| 17 <iframe src="http://c.com:1234/cross_site_iframe_factory.html?c()"> |
| 18 <iframe src="http://d.com:1234/cross_site_iframe_factory.html?d()"> |
| 19 |
| 20 To make this page work, your browsertest needs a MockHostResolver, like: |
| 21 |
| 22 void SetUpOnMainThread() override { |
| 23 host_resolver()->AddRule("*", "127.0.0.1"); |
| 24 ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady()); |
| 25 } |
| 26 |
| 27 You can play around with the arguments by loading this page via file://, but |
| 28 you probably won't get the same process behavior as if you loaded via http. --> |
| 29 <head> |
| 30 <title>Cross-site iframe factory</title> |
| 31 <style> |
| 32 body { |
| 33 font-family: Sans-Serif; |
| 34 text-align: center; |
| 35 } |
| 36 iframe { |
| 37 border-radius: 7px; |
| 38 border-style: solid; |
| 39 vertical-align: top; |
| 40 margin: 2px; |
| 41 box-shadow: 2px 2px 2px #888888; |
| 42 } |
| 43 </style> |
| 44 </head> |
| 45 <body> |
| 46 <h2 id='siteNameHeading'></h2> |
| 47 |
| 48 |
| 49 <script src='tree_parser_util.js'></script> |
| 50 <script type='text/javascript'> |
| 51 |
| 52 /** |
| 53 * Determines a random pastel-ish color from the first character of a string. |
| 54 */ |
| 55 function pastelColorForFirstCharacter(seedString, lightness) { |
| 56 // Map the first character to an index. This could be negative, we don't |
| 57 // really care. |
| 58 var index = seedString.charCodeAt(0) - 'a'.charCodeAt(0); |
| 59 |
| 60 // If the first character is 'a', this will the the starting color. |
| 61 var hueOfA = 200; // Spoiler alert: it's blue. |
| 62 |
| 63 // Color palette generation articles suggest that spinning the hue wheel by |
| 64 // the golden ratio yields a magically nice color distribution. Something |
| 65 // about sunflower seeds. I am skeptical of the rigor of that claim (probably |
| 66 // any irrational number at a slight offset from 2/3 would do) but it does |
| 67 // look pretty. |
| 68 var phi = 2 / (1 + Math.pow(5, .5)); |
| 69 var hue = Math.round((360 * index * phi + hueOfA) % 360); |
| 70 return 'hsl(' + hue + ', 60%, ' + Math.round(100 * lightness) + '%)'; |
| 71 } |
| 72 |
| 73 function backgroundColorForSite(site) { |
| 74 // Light pastel. |
| 75 return pastelColorForFirstCharacter(site, .75); |
| 76 } |
| 77 |
| 78 function borderColorForSite(site) { |
| 79 // Darker color in the same hue has the background. |
| 80 return pastelColorForFirstCharacter(site, .32); |
| 81 } |
| 82 |
| 83 /** |
| 84 * Adds ".com" to an argument if it doesn't already have a top level domain. |
| 85 * This cuts down on noise in the query string, letting you use single-letter |
| 86 * names. |
| 87 */ |
| 88 function canonicalizeSite(siteString) { |
| 89 if (siteString.indexOf('.') == -1) |
| 90 return siteString + '.com'; |
| 91 return siteString; |
| 92 } |
| 93 |
| 94 /** |
| 95 * Simple recursive layout heuristic, since frames can't size themselves. |
| 96 * This scribbles .layoutX and .layoutY properties into |tree|. |
| 97 */ |
| 98 function layout(tree) { |
| 99 // Step 1: layout children. |
| 100 var numFrames = tree.children.length; |
| 101 for (var i = 0; i < numFrames; i++) { |
| 102 layout(tree.children[i]); |
| 103 } |
| 104 |
| 105 // Step 2: find largest child. |
| 106 var largestChildX = 0; |
| 107 var largestChildY = 0; |
| 108 for (var i = 0; i < numFrames; i++) { |
| 109 largestChildX = Math.max(largestChildX, tree.children[i].layoutX); |
| 110 largestChildY = Math.max(largestChildY, tree.children[i].layoutY); |
| 111 } |
| 112 |
| 113 // Step 3: Tweakable control parameters. |
| 114 var minX = 110; // Should be wide enough to fit a decent sized domain. |
| 115 var minY = 110; // Could be less, but squares look nice. |
| 116 var extraYPerLevel = 50; // Needs to be tall enough to fit a line of text. |
| 117 var extraXPerLevel = 50; // Could be less, but squares look nice. |
| 118 |
| 119 // Account for padding around each <iframe>. |
| 120 largestChildX += 30; |
| 121 largestChildY += 30; |
| 122 |
| 123 // Step 4: Assume a gridSizeX-by-gridSizeY layout that's big enough to fit if |
| 124 // all children were the size of the largest one. |
| 125 var gridSizeX = Math.ceil(Math.sqrt(numFrames)); |
| 126 var gridSizeY = Math.round(Math.sqrt(numFrames)); |
| 127 tree.layoutX = Math.max(gridSizeX * largestChildX + extraXPerLevel, minX); |
| 128 tree.layoutY = Math.max(gridSizeY * largestChildY + extraYPerLevel, minY); |
| 129 } |
| 130 |
| 131 function main() { |
| 132 var goCrossSite = !window.location.protocol.startsWith('file'); |
| 133 var queryString = decodeURIComponent(window.location.search.substring(1)); |
| 134 var frameTree = TreeParserUtil.parse(queryString); |
| 135 var currentSite = canonicalizeSite(frameTree.value); |
| 136 |
| 137 // Apply style to the current document. |
| 138 document.getElementById('siteNameHeading').appendChild( |
| 139 document.createTextNode(currentSite)); |
| 140 document.body.style.backgroundColor = backgroundColorForSite(currentSite); |
| 141 |
| 142 // Determine how big the children should be (using a very rough heuristic). |
| 143 layout(frameTree); |
| 144 |
| 145 for (var i = 0; i < frameTree.children.length; i++) { |
| 146 // Compute the URL for this iframe . |
| 147 var site = canonicalizeSite(frameTree.children[i].value); |
| 148 var subtreeString = TreeParserUtil.flatten(frameTree.children[i]); |
| 149 var url = ''; |
| 150 url += window.location.protocol + '//'; // scheme (preserved) |
| 151 url += goCrossSite ? site : window.location.host; // host |
| 152 if (window.location.port) |
| 153 url += ':' + window.location.port; // port (preserved) |
| 154 url += window.location.pathname; // path (preserved) |
| 155 url += '?' + encodeURIComponent(subtreeString); // query |
| 156 |
| 157 // Add the iframe to the document. |
| 158 var iframe = document.createElement('iframe'); |
| 159 iframe.src = url; |
| 160 iframe.style.borderColor = borderColorForSite(site); |
| 161 iframe.width = frameTree.children[i].layoutX; |
| 162 iframe.height = frameTree.children[i].layoutY; |
| 163 document.body.appendChild(iframe); |
| 164 } |
| 165 } |
| 166 |
| 167 main(); |
| 168 </script> |
| 169 </body></html> |
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Chromium Code Reviews
Issue 1264923002:
Introduce cross_site_iframe_factory.html, and use it in a test (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master