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Add autofill field comments (#4568) 

* Added comments.

* More comments.

* More function comments.

* Changed comment to add missing words.

Co-authored-by: Thomas Rittson <31796059+eliykat@users.noreply.github.com>

* Added better comment on fill query function.

Co-authored-by: Thomas Rittson <31796059+eliykat@users.noreply.github.com>

* More comments.

* Added additional documentation on viewable and visible

* Undid changes to the logic to avoid any chance of breaking anything.

---------

Co-authored-by: Thomas Rittson <31796059+eliykat@users.noreply.github.com>
This commit is contained in:
Todd Martin 2023-02-10 09:51:54 -05:00 committed by GitHub
parent aea7f5c896
commit da963346db
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 332 additions and 45 deletions
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262
apps/browser/src/autofill/content/autofill.js
View File

@ -56,7 +56,12 @@
function getPageDetails(theDoc, oneShotId) {
// start helpers
// get the value of a dom element's attribute
/**
* For a given element `el`, returns the value of the attribute `attrName`.
* @param {HTMLElement} el
* @param {string} attrName
* @returns {string} The value of the attribute
*/
function getElementAttrValue(el, attrName) {
var attrVal = el[attrName];
if ('string' == typeof attrVal) {
@ -89,7 +94,11 @@
return elType !== el.type;
}
// get the value of a dom element
/**
* Returns the value of the given element.
* @param {HTMLElement} el
* @returns {any} Value of the element
*/
function getElementValue(el) {
switch (toLowerString(el.type)) {
case 'checkbox':
@ -113,7 +122,11 @@
}
}
// get all the options for a "select" element
/**
* If `el` is a `<select>` element, return an array of all of the options' `text` properties.
* @param {HTMLElement} el
* @returns {string[]} An array of options for the given `<select>` element
*/
function getSelectElementOptions(el) {
if (!el.options) {
return null;
@ -132,34 +145,51 @@
};
}
// get the top label
/**
* If `el` is in a data table, get the label in the row directly above it
* @param {HTMLElement} el
* @returns {string} A string containing the label, or null if not found
*/
function getLabelTop(el) {
var parent;
// Traverse up the DOM until we reach either the top or the table data element containing our field
for (el = el.parentElement || el.parentNode; el && 'td' != toLowerString(el.tagName);) {
el = el.parentElement || el.parentNode;
}
// If we reached the top, return null
if (!el || void 0 === el) {
return null;
}
// Establish the parent of the table and make sure it's a table row
parent = el.parentElement || el.parentNode;
if ('tr' != parent.tagName.toLowerCase()) {
return null;
}
// Get the previous sibling of the table row and make sure it's a table row
parent = parent.previousElementSibling;
if (!parent || 'tr' != (parent.tagName + '').toLowerCase() ||
parent.cells && el.cellIndex >= parent.cells.length) {
return null;
}
// Parent is established as the row above the table data element containing our field
// Now let's traverse over to the cell in the same column as our field
el = parent.cells[el.cellIndex];
// Get the contents of this label
var elText = el.textContent || el.innerText;
return elText = cleanText(elText);
}
// get all the tags for a given label
/**
* Get the contents of the elements that are labels for `el`
* @param {HTMLElement} el
* @returns {string} A string containing all of the `innerText` or `textContent` values for all elements that are labels for `el`
*/
function getLabelTag(el) {
var docLabel,
theLabels = [];
@ -207,7 +237,13 @@
}).join('');
}
// add property and value to the object if there is a value
/**
* Add property `prop` with value `val` to the object `obj`
* @param {object} obj
* @param {string} prop
* @param {any} val
* @param {*} d
*/
function addProp(obj, prop, val, d) {
if (0 !== d && d === val || null === val || void 0 === val) {
return;
@ -216,12 +252,21 @@
obj[prop] = val;
}
// lowercase helper
/**
* Converts the string `s` to lowercase
* @param {string} s
* @returns Lowercase string
*/
function toLowerString(s) {
return 'string' === typeof s ? s.toLowerCase() : ('' + s).toLowerCase();
}
// query the document helper
/**
* Query the document `doc` for elements matching the selector `selector`
* @param {Document} doc
* @param {string} query
* @returns {HTMLElement[]} An array of elements matching the selector
*/
function queryDoc(doc, query) {
var els = [];
try {
@ -405,6 +450,12 @@
document.elementForOPID = getElementForOPID;
/**
* Do the event on the element.
* @param {HTMLElement} kedol The element to do the event on
* @param {string} fonor The event name
* @returns
*/
function doEventOnElement(kedol, fonor) {
var quebo;
isFirefox ? (quebo = document.createEvent('KeyboardEvent'), quebo.initKeyEvent(fonor, true, false, null, false, false, false, false, 0, 0)) : (quebo = kedol.ownerDocument.createEvent('Events'),
@ -413,20 +464,35 @@
return quebo;
}
// clean up the text
/**
* Clean up the string `s` to remove non-printable characters and whitespace.
* @param {string} s
* @returns {string} Clean text
*/
function cleanText(s) {
var sVal = null;
s && (sVal = s.replace(/^\\s+|\\s+$|\\r?\\n.*$/gm, ''), sVal = 0 < sVal.length ? sVal : null);
return sVal;
}
// check the node type and adjust the array accordingly
/**
* If `el` is a text node, add the node's text to `arr`.
* If `el` is an element node, add the element's `textContent or `innerText` to `arr`.
* @param {string[]} arr An array of `textContent` or `innerText` values
* @param {HTMLElement} el The element to push to the array
*/
function checkNodeType(arr, el) {
var theText = '';
3 === el.nodeType ? theText = el.nodeValue : 1 === el.nodeType && (theText = el.textContent || el.innerText);
(theText = cleanText(theText)) && arr.push(theText);
}
/**
* Check if `el` is a type that indicates the transition to a new section of the page.
* If so, this indicates that we should not use `el` or its children for getting autofill context for the previous element.
* @param {HTMLElement} el The element to check
* @returns {boolean} Returns `true` if `el` is an HTML element from a known set and `false` otherwise
*/
function isKnownTag(el) {
if (el && void 0 !== el) {
var tags = 'select option input form textarea button table iframe body head script'.split(' ');
@ -444,6 +510,12 @@
}
}
/**
* Recursively gather all of the text values from the elements preceding `el` in the DOM
* @param {HTMLElement} el
* @param {string[]} arr An array of `textContent` or `innerText` values
* @param {number} steps The number of steps to take up the DOM tree
*/
function shiftForLeftLabel(el, arr, steps) {
var sib;
for (steps || (steps = 0); el && el.previousSibling;) {
@ -470,37 +542,51 @@
}
}
// is a dom element visible on screen?
/**
* Determine if the element is visible.
* Visible is define as not having `display: none` or `visibility: hidden`.
* @param {HTMLElement} el
* @returns {boolean} Returns `true` if the element is visible and `false` otherwise
*/
function isElementVisible(el) {
var theEl = el;
// Get the top level document
el = (el = el.ownerDocument) ? el.defaultView : {};
// walk the dom tree
// walk the dom tree until we reach the top
for (var elStyle; theEl && theEl !== document;) {
// Calculate the style of the element
elStyle = el.getComputedStyle ? el.getComputedStyle(theEl, null) : theEl.style;
// If there's no computed style at all, we're done, as we know that it's not hidden
if (!elStyle) {
return true;
}
// If the element's computed style includes `display: none` or `visibility: hidden`, we know it's hidden
if ('none' === elStyle.display || 'hidden' == elStyle.visibility) {
return false;
}
// walk up
// At this point, we aren't sure if the element is hidden or not, so we need to keep walking up the tree
theEl = theEl.parentNode;
}
return theEl === document;
}
// is a dom element "viewable" on screen?
/**
* Determine if the element is "viewable" on the screen.
* "Viewable" is defined as being visible in the DOM and being within the confines of the viewport.
* @param {HTMLElement} el
* @returns {boolean} Returns `true` if the element is viewable and `false` otherwise
*/
function isElementViewable(el) {
var theDoc = el.ownerDocument.documentElement,
rect = el.getBoundingClientRect(),
docScrollWidth = theDoc.scrollWidth,
docScrollHeight = theDoc.scrollHeight,
leftOffset = rect.left - theDoc.clientLeft,
topOffset = rect.top - theDoc.clientTop,
rect = el.getBoundingClientRect(), // getBoundingClientRect is relative to the viewport
docScrollWidth = theDoc.scrollWidth, // scrollWidth is the width of the document including any overflow
docScrollHeight = theDoc.scrollHeight, // scrollHeight is the height of the document including any overflow
leftOffset = rect.left - theDoc.clientLeft, // How far from the left of the viewport is the element, minus the left border width?
topOffset = rect.top - theDoc.clientTop, // How far from the top of the viewport is the element, minus the top border width?
theRect;
if (!isElementVisible(el) || !el.offsetParent || 10 > el.clientWidth || 10 > el.clientHeight) {
@ -512,30 +598,49 @@
return false;
}
// If any of the rects have a left side that is further right than the document width or a right side that is
// further left than the origin (i.e. is negative), we consider the element to be not viewable
for (var i = 0; i < rects.length; i++) {
if (theRect = rects[i], theRect.left > docScrollWidth || 0 > theRect.right) {
return false;
}
}
// If the element is further left than the document width, or further down than the document height, we know that it's not viewable
if (0 > leftOffset || leftOffset > docScrollWidth || 0 > topOffset || topOffset > docScrollHeight) {
return false;
}
// walk the tree
// Our next check is going to get the center point of the element, and then use elementFromPoint to see if the element
// is actually returned from that point. If it is, we know that it's viewable. If it isn't, we know that it's not viewable.
// If the right side of the bounding rectangle is outside the viewport, the x coordinate of the center point is the window width (minus offset) divided by 2.
// If the right side of the bounding rectangle is inside the viewport, the x coordinate of the center point is the width of the bounding rectangle divided by 2.
// If the bottom of the bounding rectangle is outside the viewport, the y coordinate of the center point is the window height (minus offset) divided by 2.
// If the bottom side of the bounding rectangle is inside the viewport, the y coordinate of the center point is the height of the bounding rectangle divided by
// We then use elementFromPoint to find the element at that point.
for (var pointEl = el.ownerDocument.elementFromPoint(leftOffset + (rect.right > window.innerWidth ? (window.innerWidth - leftOffset) / 2 : rect.width / 2), topOffset + (rect.bottom > window.innerHeight ? (window.innerHeight - topOffset) / 2 : rect.height / 2)); pointEl && pointEl !== el && pointEl !== document;) {
// If the element we found is a label, and the element we're checking has labels
if (pointEl.tagName && 'string' === typeof pointEl.tagName && 'label' === pointEl.tagName.toLowerCase()
&& el.labels && 0 < el.labels.length) {
// Return true if the element we found is one of the labels for the element we're checking.
// This means that the element we're looking for is considered viewable
return 0 <= Array.prototype.slice.call(el.labels).indexOf(pointEl);
}
// walk up
// Walk up the DOM tree to check the parent element
pointEl = pointEl.parentNode;
}
// If the for loop exited because we found the element we're looking for, return true, as it's viewable
// If the element that we found isn't the element we're looking for, it means the element we're looking for is not viewable
return pointEl === el;
}
/**
* Retrieve the element from the document with the specified `opid` property
* @param {number} opId
* @returns {HTMLElement} The element with the specified `opiId`, or `null` if no such element exists
*/
function getElementForOPID(opId) {
var theEl;
if (void 0 === opId || null === opId) {
@ -561,7 +666,12 @@
}
}
// get all the form elements that we care about
/**
* Query `theDoc` for form elements that we can use for autofill, ranked by importance and limited by `limit`
* @param {Document} theDoc The Document to query
* @param {number} limit The maximum number of elements to return
* @returns An array of HTMLElements
*/
function getFormElements(theDoc, limit) {
// START MODIFICATION
var els = [];
@ -603,7 +713,11 @@
// END MODIFICATION
}
// focus the element and optionally restore its original value
/**
* Focus the element `el` and optionally restore its original value
* @param {HTMLElement} el
* @param {boolean} setVal Set the value of the element to its original value
*/
function focusElement(el, setVal) {
if (setVal) {
var initialValue = el.value;
@ -755,7 +869,12 @@
return el ? (fillTheElement(el, op), [el]) : null;
}
// do a fill by query operation
/**
* Find all elements matching `query` and fill them using the value `op` from the fill script
* @param {string} query
* @param {string} op
* @returns {HTMLElement}
*/
function doFillByQuery(query, op) {
var elements = selectAllFromDoc(query);
return Array.prototype.map.call(Array.prototype.slice.call(elements), function (el) {
@ -764,7 +883,12 @@
}, this);
}
// do a simple set value by query
/**
* Assign `valueToSet` to all elements in the DOM that match `query`.
* @param {string} query
* @param {string} valueToSet
* @returns {Array} Array of elements that were set.
*/
function doSimpleSetByQuery(query, valueToSet) {
var elements = selectAllFromDoc(query),
arr = [];
@ -774,7 +898,11 @@
return arr;
}
// focus by opid
/**
* Do a a click and focus on the element with the given `opId`.
* @param {number} opId
* @returns
*/
function doFocusByOpId(opId) {
var el = getElementByOpId(opId)
if (el) {
@ -785,13 +913,21 @@
return null;
}
// do a click by opid operation
/**
* Do a click on the element with the given `opId`.
* @param {number} opId
* @returns
*/
function doClickByOpId(opId) {
var el = getElementByOpId(opId);
return el ? clickElement(el) ? [el] : null : null;
}
// do a click by query operation
/**
* Do a `click` and `focus` on all elements that match the query.
* @param {string} query
* @returns
*/
function doClickByQuery(query) {
query = selectAllFromDoc(query);
return Array.prototype.map.call(Array.prototype.slice.call(query), function (el) {
@ -811,7 +947,11 @@
},
styleTimeout = 200;
// fill an element
/**
* Fll an element `el` using the value `op` from the fill script
* @param {HTMLElement} el
* @param {string} op
*/
function fillTheElement(el, op) {
var shouldCheck;
if (el && null !== op && void 0 !== op && !(el.disabled || el.a || el.readOnly)) {
@ -840,7 +980,11 @@
}
}
// do all the full operations needed
/**
* Do all the fill operations needed on the element `el`.
* @param {HTMLElement} el
* @param {*} afterValSetFunc The function to perform after the operations are complete.
*/
function doAllFillOperations(el, afterValSetFunc) {
setValueForElement(el);
afterValSetFunc(el);
@ -860,7 +1004,12 @@
document.elementForOPID = getElementByOpId;
// normalize the event based on API support
/**
* Normalize the event based on API support
* @param {HTMLElement} el
* @param {string} eventName
* @returns {Event} A normalized event
*/
function normalizeEvent(el, eventName) {
var ev;
if ('KeyboardEvent' in window) {
@ -882,7 +1031,11 @@
return ev;
}
// set value of the given element
/**
* Simulate the entry of a value into an element.
* Clicks the element, focuses it, and then fires a keydown, keypress, and keyup event.
* @param {HTMLElement} el
*/
function setValueForElement(el) {
var valueToSet = el.value;
clickElement(el);
@ -893,7 +1046,11 @@
el.value !== valueToSet && (el.value = valueToSet);
}
// set value of the given element by using events
/**
* Simulate the entry of a value into an element by using events.
* Dispatches a keydown, keypress, and keyup event, then fires the `input` and `change` events before removing focus.
* @param {HTMLElement} el
*/
function setValueForElementByEvent(el) {
var valueToSet = el.value,
ev1 = el.ownerDocument.createEvent('HTMLEvents'),
@ -910,7 +1067,11 @@
el.value !== valueToSet && (el.value = valueToSet);
}
// click on an element
/**
* Click on an element `el`
* @param {HTMLElement} el
* @returns {boolean} Returns true if the element was clicked and false if it was not able to be clicked
*/
function clickElement(el) {
if (!el || el && 'function' !== typeof el.click) {
return false;
@ -919,7 +1080,10 @@
return true;
}
// get all fields we care about
/**
* Get all the elements on the DOM that are likely to be a password field
* @returns {Array} Array of elements
*/
function getAllFields() {
var r = RegExp('((\\\\b|_|-)pin(\\\\b|_|-)|password|passwort|kennwort|passe|contraseña|senha|密码|adgangskode|hasło|wachtwoord)', 'i');
return Array.prototype.slice.call(selectAllFromDoc("input[type='text']")).filter(function (el) {
@ -927,7 +1091,9 @@
}, this);
}
// touch all the fields
/**
* Touch all the fields
*/
function touchAllFields() {
getAllFields().forEach(function (el) {
setValueForElement(el);
@ -936,7 +1102,11 @@
});
}
// can we see the element to apply some styling?
/**
* Determine if we can apply styling to `el` to indicate that it was filled.
* @param {HTMLElement} el
* @returns {boolean} Returns true if we can see the element to apply styling.
*/
function canSeeElementToStyle(el) {
var currentEl;
if (currentEl = animateTheFilling) {
@ -965,7 +1135,11 @@
return currentEl ? -1 !== 'email text password number tel url'.split(' ').indexOf(el.type || '') : false;
}
// find the element for this operation
/**
* Find the element for the given `opid`.
* @param {number} theOpId
* @returns {HTMLElement} The element for the given `opid`, or `null` if not found.
*/
function getElementByOpId(theOpId) {
var theElement;
if (void 0 === theOpId || null === theOpId) {
@ -993,7 +1167,11 @@
}
}
// helper for doc.querySelectorAll
/**
* Helper for doc.querySelectorAll
* @param {string} theSelector
* @returns
*/
function selectAllFromDoc(theSelector) {
var d = document, elements = [];
try {
@ -1002,7 +1180,11 @@
return elements;
}
// focus an element and optionally re-set its value after focusing
/**
* Focus an element and optionally re-set its value after focusing
* @param {HTMLElement} el
* @param {boolean} setValue Re-set the value after focusing
*/
function doFocusElement(el, setValue) {
if (setValue) {
var existingValue = el.value;

75
apps/browser/src/autofill/models/autofill-field.ts
View File

@ -1,26 +1,101 @@
/**
* Represents a single field that is collected from the page source and is potentially autofilled.
*/
export default class AutofillField {
/**
* The unique identifier assigned to this field during collection of the page details
*/
opid: string;
/**
* Sequential number assigned to each element collected, based on its position in the DOM.
* Used to do perform proximal checks for username and password fields on the DOM.
*/
elementNumber: number;
/**
* Designates whether the field is visible, based on the element's style
*/
visible: boolean;
/**
* Designates whether the field is viewable on the current part of the DOM that the user can see
*/
viewable: boolean;
/**
* The HTML `id` attribute of the field
*/
htmlID: string;
/**
* The HTML `name` attribute of the field
*/
htmlName: string;
/**
* The HTML `class` attribute of the field
*/
htmlClass: string;
/**
* The concatenated `innerText` or `textContent` of all the elements that are to the "left" of the field in the DOM
*/
"label-left": string;
/**
* The concatenated `innerText` or `textContent` of all the elements that are to the "right" of the field in the DOM
*/
"label-right": string;
/**
* For fields in a data table, the contents of the table row immediately above the field
*/
"label-top": string;
/**
* The contatenated `innerText` or `textContent` of all elements that are HTML labels for the field
*/
"label-tag": string;
/**
* The `aria-label` attribute for the field
*/
"label-aria": string;
/**
* The HTML `placeholder` attribute for the field
*/
placeholder: string;
/**
* The HTML `type` attribute for the field
*/
type: string;
/**
* The HTML `value` for the field
*/
value: string;
/**
* The `disabled` status of the field
*/
disabled: boolean;
/**
* The `readonly` status of the field
*/
readonly: boolean;
/**
* @deprecated
* The `onePasswordFieldType` from the `dataset` on the element.
* If empty it contains the HTML `type` attribute for the field.
*/
onePasswordFieldType: string;
/**
* The `opid` attribute value of the form that contains the field
*/
form: string;
/**
* The `x-autocompletetype`, `autocompletetype`, or `autocomplete` attribute for the field
*/
autoCompleteType: string;
/**
* For `<select>` elements, an array of the element's option `text` values
*/
selectInfo: any;
/**
* The `maxLength` attribute for the field
*/
maxLength: number;
/**
* The `tagName` for the field
*/
tagName: string;
[key: string]: any;
}

18
apps/browser/src/autofill/models/autofill-form.ts
View File

@ -1,7 +1,25 @@
/**
* Represents an HTML form whose elements can be autofilled
*/
export default class AutofillForm {
/**
* The unique identifier assigned to this field during collection of the page details
*/
opid: string;
/**
* The HTML `name` attribute of the form field
*/
htmlName: string;
/**
* The HTML `id` attribute of the form field
*/
htmlID: string;
/**
* The HTML `action` attribute of the form field
*/
htmlAction: string;
/**
* The HTML `method` attribute of the form field
*/
htmlMethod: string;
}

12
apps/browser/src/autofill/models/autofill-page-details.ts
View File

@ -1,13 +1,25 @@
import AutofillField from "./autofill-field";
import AutofillForm from "./autofill-form";
/**
* The details of a page that have been collected and can be used for autofill
*/
export default class AutofillPageDetails {
/**
* A unique identifier for the page
*/
documentUUID: string;
title: string;
url: string;
documentUrl: string;
tabUrl: string;
/**
* A collection of all of the forms in the page DOM, keyed by their `opid`
*/
forms: { [id: string]: AutofillForm };
/**
* A collection of all the fields in the page DOM, keyed by their `opid`
*/
fields: AutofillField[];
collectedTimestamp: number;
}