FTP directory UI emulation on script-disabled domains.

src/content/ftp.js

@@ -0,0 +1,88 @@
+(() => {
+  // see https://dxr.mozilla.org/mozilla-central/rev/d03b538b6b417ba892d0a92fd693945b741246e1/netwerk/streamconv/converters/nsIndexedToHTML.cpp#381
+  'use strict';
+  var gTable, gOrderBy, gTBody, gRows, gUI_showHidden;
+  document.addEventListener("DOMContentLoaded", function() {
+    if ("gUI_showHidden" in window.wrappedJSObject || // scripts are enabled
+        !(document.scripts[0] &&
+          /\bgUI_showHidden\b/.test(document.scripts[0].textContent)) // not a FTP dir listing
+    ) {
+      return;
+    }
+    
+    gTable = document.getElementsByTagName("table")[0];
+    gTBody = gTable.tBodies[0];
+    if (gTBody.rows.length < 2)
+      return;
+    gUI_showHidden = document.getElementById("UI_showHidden")
+    var headCells = gTable.tHead.rows[0].cells,
+        hiddenObjects = false;
+    function rowAction(i) {
+      return function(event) {
+        event.preventDefault();
+        orderBy(i);
+      }
+    }
+    for (var i = headCells.length - 1; i >= 0; i--) {
+      var anchor = document.createElement("a");
+      anchor.href = "";
+      anchor.appendChild(headCells[i].firstChild);
+      headCells[i].appendChild(anchor);
+      headCells[i].addEventListener("click", rowAction(i), true);
+    }
+    if (gUI_showHidden) {
+      gRows = Array.slice(gTBody.rows);
+      hiddenObjects = gRows.some(row => row.className == "hidden-object");
+    }
+    gTable.setAttribute("order", "");
+    if (hiddenObjects) {
+      gUI_showHidden.style.display = "block";
+      updateHidden();
+    }
+  }, "false");
+  function compareRows(rowA, rowB) {
+    var a = rowA.cells[gOrderBy].getAttribute("sortable-data") || "";
+    var b = rowB.cells[gOrderBy].getAttribute("sortable-data") || "";
+    var intA = +a;
+    var intB = +b;
+    if (a == intA && b == intB) {
+      a = intA;
+      b = intB;
+    } else {
+      a = a.toLowerCase();
+      b = b.toLowerCase();
+    }
+    if (a < b)
+      return -1;
+    if (a > b)
+      return 1;
+    return 0;
+  }
+  function orderBy(column) {
+    if (!gRows)
+      gRows = Array.slice(gTBody.rows);
+    var order;
+    if (gOrderBy == column) {
+      order = gTable.getAttribute("order") == "asc" ? "desc" : "asc";
+    } else {
+      order = "asc";
+      gOrderBy = column;
+      gTable.setAttribute("order-by", column);
+      gRows.sort(compareRows);
+    }
+    gTable.removeChild(gTBody);
+    gTable.setAttribute("order", order);
+    if (order == "asc")
+      for (var i = 0; i < gRows.length; i++)
+        gTBody.appendChild(gRows[i]);
+    else
+      for (var i = gRows.length - 1; i >= 0; i--)
+        gTBody.appendChild(gRows[i]);
+    gTable.appendChild(gTBody);
+  }
+  function updateHidden() {
+    gTable.className = gUI_showHidden.getElementsByTagName("input")[0].checked ?
+                       "" :
+                       "remove-hidden";
+  }
+})();

src/manifest.json

@@ -89,6 +89,13 @@
         "content/webglHook.js",
         "content/media.js"
       ]
+    },
+    {
+      "run_at": "document_start",
+      "matches": ["ftp://*/*"],
+      "js": [
+        "content/ftp.js"
+      ]
     }
   ],