aboutsummaryrefslogtreecommitdiffstats
path: root/lib/html_script_finder/web_labels/find_js_labels.js
diff options
context:
space:
mode:
Diffstat (limited to 'lib/html_script_finder/web_labels/find_js_labels.js')
-rw-r--r--lib/html_script_finder/web_labels/find_js_labels.js131
1 files changed, 131 insertions, 0 deletions
diff --git a/lib/html_script_finder/web_labels/find_js_labels.js b/lib/html_script_finder/web_labels/find_js_labels.js
new file mode 100644
index 0000000..6404c49
--- /dev/null
+++ b/lib/html_script_finder/web_labels/find_js_labels.js
@@ -0,0 +1,131 @@
+/**
+ * GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript.
+ * *
+ * Copyright (C) 2011, 2012, 2013, 2014 Loic J. Duros
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * This file works in conjunction with lib/html_script_finder/js_web_labels.js
+ * to find mentions of external JavaScript files and their license information.
+ * This allows the dom_handler to allow them by default.
+ */
+
+/**
+ * @param {Array} licenses - An array of html nodes.
+ *
+ * @return {Array} - An array of simple license objects.
+ */
+function getLicensesArrayFromElements(licenses) {
+ var a = [];
+ // Convert the html node into a simpler object
+ for (var i = 0; i < licenses.length; i++) {
+ a.push({
+ licenseName: licenses[i].textContent,
+ licenseUrl: licenses[i].href
+ });
+ }
+ return a;
+}
+
+/**
+ * @param {Array} sources - An array of html nodes.
+ *
+ * @return {Array} - An array of simple source objects.
+ */
+function getSourcesArrayFromElements(sources) {
+ var a = [];
+ for (var i = 0; i < sources.length; i++) {
+ a.push({
+ sourceName: sources[i].textContent,
+ sourceUrl: sources[i].href
+ });
+ }
+ return a;
+}
+
+// find table.
+exports.getLicenseList = function(document) {
+ var tbl = document.getElementById('jslicense-labels1');
+ var jsList = [];
+ var i = 0;
+ var le;
+ var rows;
+ var link;
+ var fileCell;
+ var licenseCell;
+ var sourceCell;
+ var row;
+
+ if (tbl) {
+ try {
+ rows = tbl.getElementsByTagName('tr');
+ le = rows.length;
+ var mockElem = {textContent: 'Unknown', href: 'Unknown'};
+ // loop through rows, and add each valid element to
+ // the array.
+ for (; i < le; i++) {
+ row = rows[i].getElementsByTagName('td');
+
+ // Find script url
+ if (row[0] && row[0].getElementsByTagName('a')[0]) {
+ fileCell = row[0].getElementsByTagName('a')[0];
+ } else {
+ fileCell = mockElem;
+ }
+
+ // 'licenses' and 'sources' will, for normal cases, just
+ // contain one element. If the fileCell is pointing to a
+ // combined JS file with multiple licenses, though, these
+ // arrays will contain multiple elements.
+
+ // Find license info
+ var licenses = [mockElem];
+ if (row[1] && row[1].getElementsByTagName('a').length > 0) {
+ licenses = getLicensesArrayFromElements(
+ row[1].getElementsByTagName('a'));
+ }
+
+ // Find original source info
+ var sources = [mockElem];
+ if (row[2] && row[2].getElementsByTagName('a').length > 0) {
+ sources = getSourcesArrayFromElements(
+ row[2].getElementsByTagName('a'));
+ }
+
+ if (fileCell.href !== 'Unknown') {
+ jsList.push({
+ 'fileName': fileCell.textContent,
+ 'fileUrl': fileCell.href,
+
+ // we'll fill this with value when needed to compare
+ // script.
+ 'fileHash': null,
+
+ 'licenses': licenses,
+ 'sources': sources
+ });
+ }
+ }
+ } catch (e) {
+ console.debug(
+ 'Error fetching JS Web Label licenses',
+ e, e.lineNumber, e.fileName, 'index is', i);
+ }
+ }
+
+ return jsList;
+};