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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
(function() {
var Cc = Components.classes;
var Ci = Components.interfaces;
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
Components.utils.import("resource://gre/modules/Services.jsm");
Components.utils.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
var satchelFormListener = {
QueryInterface : XPCOMUtils.generateQI([Ci.nsIFormSubmitObserver,
Ci.nsIDOMEventListener,
Ci.nsIObserver,
Ci.nsISupportsWeakReference]),
debug : true,
enabled : true,
saveHttpsForms : true,
init : function() {
Services.obs.addObserver(this, "earlyformsubmit", false);
Services.prefs.addObserver("browser.formfill.", this, false);
this.updatePrefs();
addEventListener("unload", this, false);
},
updatePrefs : function () {
this.debug = Services.prefs.getBoolPref("browser.formfill.debug");
this.enabled = Services.prefs.getBoolPref("browser.formfill.enable");
this.saveHttpsForms = Services.prefs.getBoolPref("browser.formfill.saveHttpsForms");
},
// Implements the Luhn checksum algorithm as described at
// http://wikipedia.org/wiki/Luhn_algorithm
isValidCCNumber : function (ccNumber) {
// Remove dashes and whitespace
ccNumber = ccNumber.replace(/[\-\s]/g, '');
let len = ccNumber.length;
if (len != 9 && len != 15 && len != 16)
return false;
if (!/^\d+$/.test(ccNumber))
return false;
let total = 0;
for (let i = 0; i < len; i++) {
let ch = parseInt(ccNumber[len - i - 1]);
if (i % 2 == 1) {
// Double it, add digits together if > 10
ch *= 2;
if (ch > 9)
ch -= 9;
}
total += ch;
}
return total % 10 == 0;
},
log : function (message) {
if (!this.debug)
return;
dump("satchelFormListener: " + message + "\n");
Services.console.logStringMessage("satchelFormListener: " + message);
},
/* ---- dom event handler ---- */
handleEvent: function(e) {
switch (e.type) {
case "unload":
Services.obs.removeObserver(this, "earlyformsubmit");
Services.prefs.removeObserver("browser.formfill.", this);
break;
default:
this.log("Oops! Unexpected event: " + e.type);
break;
}
},
/* ---- nsIObserver interface ---- */
observe : function (subject, topic, data) {
if (topic == "nsPref:changed")
this.updatePrefs();
else
this.log("Oops! Unexpected notification: " + topic);
},
/* ---- nsIFormSubmitObserver interfaces ---- */
notify : function(form, domWin, actionURI, cancelSubmit) {
try {
// Even though the global context is for a specific browser, we
// can receive observer events from other tabs! Ensure this event
// is about our content.
if (domWin.top != content)
return;
if (!this.enabled)
return;
if (PrivateBrowsingUtils.isContentWindowPrivate(domWin))
return;
this.log("Form submit observer notified.");
if (!this.saveHttpsForms) {
if (actionURI.schemeIs("https"))
return;
if (form.ownerDocument.documentURIObject.schemeIs("https"))
return;
}
if (form.hasAttribute("autocomplete") &&
form.getAttribute("autocomplete").toLowerCase() == "off")
return;
let entries = [];
for (let i = 0; i < form.elements.length; i++) {
let input = form.elements[i];
if (!(input instanceof Ci.nsIDOMHTMLInputElement))
continue;
// Only use inputs that hold text values (not including type="password")
if (!input.mozIsTextField(true))
continue;
// Bug 394612: If Login Manager marked this input, don't save it.
// The login manager will deal with remembering it.
// Don't save values when autocomplete=off is present.
if (input.hasAttribute("autocomplete") &&
input.getAttribute("autocomplete").toLowerCase() == "off")
continue;
let value = input.value.trim();
// Don't save empty or unchanged values.
if (!value || value == input.defaultValue.trim())
continue;
// Don't save credit card numbers.
if (this.isValidCCNumber(value)) {
this.log("skipping saving a credit card number");
continue;
}
let name = input.name || input.id;
if (!name)
continue;
if (name == 'searchbar-history') {
this.log('addEntry for input name "' + name + '" is denied')
continue;
}
// Limit stored data to 200 characters.
if (name.length > 200 || value.length > 200) {
this.log("skipping input that has a name/value too large");
continue;
}
// Limit number of fields stored per form.
if (entries.length >= 100) {
this.log("not saving any more entries for this form.");
break;
}
entries.push({ name: name, value: value });
}
if (entries.length) {
this.log("sending entries to parent process for form " + form.id);
sendAsyncMessage("FormHistory:FormSubmitEntries", entries);
}
}
catch (e) {
this.log("notify failed: " + e);
}
}
};
satchelFormListener.init();
})();
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