Adding upstream version 1.55.0+dfsg.upstream/1.55.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 126 insertions, 0 deletions

diff --git a/src/js/scriptlets/dom-survey-scripts.js b/src/js/scriptlets/dom-survey-scripts.js
new file mode 100644
index 0000000..e5300ff
--- /dev/null
+++ b/src/js/scriptlets/dom-survey-scripts.js
@@ -0,0 +1,126 @@
+/*******************************************************************************
+
+    uBlock Origin - a comprehensive, efficient content blocker
+    Copyright (C) 2015-present Raymond Hill
+
+    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/}.
+
+    Home: https://github.com/gorhill/uBlock
+*/
+
+'use strict';
+
+/******************************************************************************/
+
+// Scriptlets to count the number of script tags in a document.
+
+(( ) => {
+    if ( typeof vAPI !== 'object' ) { return; }
+
+    const t0 = Date.now();
+
+    if ( vAPI.domSurveyScripts instanceof Object === false ) {
+        vAPI.domSurveyScripts = {
+            busy: false,
+            scriptCount: -1,
+            surveyTime: t0,
+        };
+    }
+    const surveyResults = vAPI.domSurveyScripts;
+
+    if ( surveyResults.busy ) { return; }
+    surveyResults.busy = true;
+
+    if ( surveyResults.surveyTime < vAPI.domMutationTime ) {
+        surveyResults.scriptCount = -1;
+    }
+    surveyResults.surveyTime = t0;
+
+    if ( surveyResults.scriptCount === -1 ) {
+        const reInlineScript = /^(data:|blob:|$)/;
+        let inlineScriptCount = 0;
+        let scriptCount = 0;
+        for ( const script of document.scripts ) {
+            if ( reInlineScript.test(script.src) ) {
+                inlineScriptCount = 1;
+                continue;
+            }
+            scriptCount += 1;
+            if ( scriptCount === 99 ) { break; }
+        }
+        scriptCount += inlineScriptCount;
+        if ( scriptCount !== 0 ) {
+            surveyResults.scriptCount = scriptCount;
+        }
+    }
+
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/756
+    //   Keep trying to find inline script-like instances but only if we
+    //   have the time-budget to do so.
+    if ( surveyResults.scriptCount === -1 ) {
+        if ( document.querySelector('a[href^="javascript:"]') !== null ) {
+            surveyResults.scriptCount = 1;
+        }
+    }
+
+    // https://github.com/uBlockOrigin/uBlock-issues/issues/1756
+    //   Mind that there might be no body element.
+    if ( surveyResults.scriptCount === -1 && document.body !== null ) {
+        surveyResults.scriptCount = 0;
+        const onHandlers = new Set([
+            'onabort', 'onblur', 'oncancel', 'oncanplay',
+            'oncanplaythrough', 'onchange', 'onclick', 'onclose',
+            'oncontextmenu', 'oncuechange', 'ondblclick', 'ondrag',
+            'ondragend', 'ondragenter', 'ondragexit', 'ondragleave',
+            'ondragover', 'ondragstart', 'ondrop', 'ondurationchange',
+            'onemptied', 'onended', 'onerror', 'onfocus',
+            'oninput', 'oninvalid', 'onkeydown', 'onkeypress',
+            'onkeyup', 'onload', 'onloadeddata', 'onloadedmetadata',
+            'onloadstart', 'onmousedown', 'onmouseenter', 'onmouseleave',
+            'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup',
+            'onwheel', 'onpause', 'onplay', 'onplaying',
+            'onprogress', 'onratechange', 'onreset', 'onresize',
+            'onscroll', 'onseeked', 'onseeking', 'onselect',
+            'onshow', 'onstalled', 'onsubmit', 'onsuspend',
+            'ontimeupdate', 'ontoggle', 'onvolumechange', 'onwaiting',
+            'onafterprint', 'onbeforeprint', 'onbeforeunload', 'onhashchange',
+            'onlanguagechange', 'onmessage', 'onoffline', 'ononline',
+            'onpagehide', 'onpageshow', 'onrejectionhandled', 'onpopstate',
+            'onstorage', 'onunhandledrejection', 'onunload',
+            'oncopy', 'oncut', 'onpaste'
+        ]);
+        const nodeIter = document.createNodeIterator(
+            document.body,
+            NodeFilter.SHOW_ELEMENT
+        );
+        for (;;) {
+            const node = nodeIter.nextNode();
+            if ( node === null ) { break; }
+            if ( node.hasAttributes() === false ) { continue; }
+            for ( const attr of node.getAttributeNames() ) {
+                if ( onHandlers.has(attr) === false ) { continue; }
+                surveyResults.scriptCount = 1;
+                break;
+            }
+        }
+    }
+
+    surveyResults.busy = false;
+
+    // IMPORTANT: This is returned to the injector, so this MUST be
+    //            the last statement.
+    if ( surveyResults.scriptCount !== -1 ) {
+        return surveyResults.scriptCount;
+    }
+})();