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var formManager = function(){ |
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/** |
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Code based on: |
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@url https://dxr.mozilla.org/firefox/source/toolkit/components/passwordmgr/src/nsLoginManager.js#655 |
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*/ |
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var settings = {}; |
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return { |
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_init_: function () { |
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API.runtime.sendMessage(API.runtime.id, {method: 'getSetting', args: 'debug'}).then(function (result) { |
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settings.debug = (result); |
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}); |
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}, |
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/* |
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* _isAutoCompleteDisabled |
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* |
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* Returns true if the page requests autocomplete be disabled for the |
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* specified form input. |
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*/ |
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isAutocompleteDisabled: function (element) { |
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return !!(element && element.hasAttribute("autocomplete") && element.getAttribute("autocomplete").toLowerCase() === "off"); |
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}, |
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/* |
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* _getPasswordFields |
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* |
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* Returns an array of password field elements for the specified form. |
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* If no pw fields are found, or if more than 3 are found, then null |
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* is returned. |
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* |
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* skipEmptyFields can be set to ignore password fields with no value. |
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*/ |
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_getPasswordFields: function (form, skipEmptyFields) { |
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// Locate the password fields in the form. |
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var pwFields = []; |
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for (var i = 0; i < form.elements.length; i++) { |
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if (form.elements[i].type !== "password"){ |
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continue; |
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} |
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if (skipEmptyFields && !form.elements[i].value){ |
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continue; |
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} |
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pwFields[pwFields.length] = { |
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index: i, |
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element: form.elements[i] |
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}; |
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} |
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// If too few or too many fields, bail out. |
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if (pwFields.length === 0) { |
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this.log('(form ignored ('+ form.action +') -- no password fields.)'); |
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return null; |
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} else if (pwFields.length > 3) { |
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this.log('(form ignored -- too many password fields. [got ' + |
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pwFields.length + "])"); |
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return null; |
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} |
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return pwFields; |
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}, |
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/* |
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* _getFormFields |
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* |
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* Returns the username and password fields found in the form. |
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* Can handle complex forms by trying to figure out what the |
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* relevant fields are. |
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* |
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* Returns: [usernameField, newPasswordField, oldPasswordField] |
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* |
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* usernameField may be null. |
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* newPasswordField will always be non-null. |
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* oldPasswordField may be null. If null, newPasswordField is just |
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* "theLoginField". If not null, the form is apparently a |
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* change-password field, with oldPasswordField containing the password |
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* that is being changed. |
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*/ |
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getFormFields: function (form, isSubmission) { |
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var usernameField = null; |
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// Locate the password field(s) in the form. Up to 3 supported. |
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// If there's no password field, there's nothing for us to do. |
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var pwFields = this._getPasswordFields(form, isSubmission); |
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if (!pwFields){ |
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return [null, null, null]; |
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} |
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// Locate the username field in the form by searching backwards |
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// from the first passwordfield, assume the first text field is the |
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// username. We might not find a username field if the user is |
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// already logged in to the site. |
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for (var i = pwFields[0].index - 1; i >= 0; i--) { |
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if (form.elements[i].type.toLowerCase() === "text" || form.elements[i].type.toLowerCase() === "email") { |
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usernameField = form.elements[i]; |
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break; |
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} |
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} |
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if (!usernameField){ |
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this.log('(form ('+ form.action +') ignored -- no username field found)'); |
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} |
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// If we're not submitting a form (it's a page load), there are no |
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// password field values for us to use for identifying fields. So, |
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// just assume the first password field is the one to be filled in. |
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if (!isSubmission || pwFields.length === 1){ |
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return [usernameField, pwFields[0].element, null]; |
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} |
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// Try to figure out WTF is in the form based on the password values. |
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var oldPasswordField, newPasswordField; |
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var pw1 = pwFields[0].element.value; |
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var pw2 = pwFields[1].element.value; |
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var pw3 = (pwFields[2] ? pwFields[2].element.value : null); |
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if (pwFields.length === 3) { |
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// Look for two identical passwords, that's the new password |
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if (pw1 === pw2 && pw2 === pw3) { |
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// All 3 passwords the same? Weird! Treat as if 1 pw field. |
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newPasswordField = pwFields[0].element; |
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oldPasswordField = null; |
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} else if (pw1 === pw2) { |
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newPasswordField = pwFields[0].element; |
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oldPasswordField = pwFields[2].element; |
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} else if (pw2 === pw3) { |
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oldPasswordField = pwFields[0].element; |
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newPasswordField = pwFields[2].element; |
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} else if (pw1 === pw3) { |
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// A bit odd, but could make sense with the right page layout. |
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newPasswordField = pwFields[0].element; |
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oldPasswordField = pwFields[1].element; |
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} else { |
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// We can't tell which of the 3 passwords should be saved. |
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this.log("(form ignored -- all 3 pw fields differ)"); |
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return [null, null, null]; |
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} |
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} else { // pwFields.length == 2 |
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if (pw1 === pw2) { |
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// Treat as if 1 pw field |
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newPasswordField = pwFields[0].element; |
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oldPasswordField = null; |
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} else { |
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// Just assume that the 2nd password is the new password |
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oldPasswordField = pwFields[0].element; |
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newPasswordField = pwFields[1].element; |
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} |
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} |
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return [usernameField, newPasswordField, oldPasswordField]; |
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}, |
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log: function (str) { |
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if(settings.debug){ |
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console.log(str); |
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} |
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} |
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}; |
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}(); |
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function getLoginFields(isSubmission) { |
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var forms = document.forms; |
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var loginForms = []; |
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for (var i = 0; i < forms.length; i++) { |
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var form = forms[i]; |
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var result = formManager.getFormFields(form, isSubmission); |
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var usernameField = result[0]; |
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var passwordField = result[1]; |
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// Need a valid password field to do anything. |
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if (passwordField === null){ |
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continue; |
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} |
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loginForms.push([usernameField, passwordField]); |
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} |
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return loginForms; |
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} |
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function getFormFromElement(elem) { |
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if(elem) { |
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while (elem.parentNode) { |
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if (elem.parentNode.nodeName.toLowerCase() === "form") { |
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return elem.parentNode; |
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} |
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elem = elem.parentNode; |
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} |
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} |
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} |
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function dispatchEvents(element){ |
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var eventNames = [ 'click', 'focus', 'keypress', 'keydown', 'keyup', 'input', 'blur', 'change' ]; |
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eventNames.forEach(function(eventName) { |
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element.dispatchEvent(new Event(eventName, {"bubbles":true})); |
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}); |
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} |
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function fillPassword(user, password) { |
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var loginFields = getLoginFields(); |
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for (var i = 0; i < loginFields.length; i++) { |
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if(user && loginFields[i][0]){ |
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loginFields[i][0].value = user; |
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if(loginFields[i][0].offsetParent) { |
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dispatchEvents(loginFields[i][0]); |
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} |
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} |
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if(password && loginFields[i][1]) { |
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loginFields[i][1].value = password; |
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if(loginFields[i][1].offsetParent) { |
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dispatchEvents(loginFields[i][1]); |
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} |
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} |
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} |
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} |
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formManager._init_(); |