Bypass paywalls for scientific documents by downloading them from sci-hub instead of paying something like 50 bucks for each paper. This script adds download buttons on Google Scholar, Scopus and Web Of Science, which lead to sci-hub.tw. In this way you can get free access to scientific papers even if you (or your university) can't afford their prices.
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// ==UserScript==
// @name Bypass paywalls for scientific documents
// @namespace StephenP
// @version 3.1.3
// @description Bypass paywalls for scientific documents by downloading them from sci-hub instead of paying something like 50 bucks for each paper. This script adds download buttons on Google Scholar, Scopus and Web Of Science, which lead to sci-hub.tw. In this way you can get free access to scientific papers even if you (or your university) can't afford their prices.
// @author StephenP
// @include http://scholar.google.*/scholar?*
// @match http://www.scopus.com/record/display.uri?*
// @match http://apps.webofknowledge.com/full_record.do?*
// @match http://apps.webofknowledge.com/InterService.do?*
// @match http://apps.webofknowledge.com/CitedFullRecord.do?*
// @include https://scholar.google.*/scholar?*
// @match https://www.scopus.com/record/display.uri?*
// @match https://apps.webofknowledge.com/full_record.do?*
// @match https://apps.webofknowledge.com/InterService.do?*
// @match https://apps.webofknowledge.com/CitedFullRecord.do?*
// @match *://*.sci-hub.tw/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
//If Sci-Hub address changes, just replace the URL below with the new one
var sciHubUrl='https://sci-hub.tw/';
var documentId;
var site=window.location.href.toString();
var i;
if(site.includes("://www.scopus.com/")){
var fullDocument=document.querySelector('[title="Full Text(opens in a new window)"]');
//fullDocument.href=fullDocument.href.slice(54);
documentId=document.getElementById("recordDOI").innerHTML;
var section=document.getElementById("outwardLinks");
section.removeChild(section.lastChild);
fullDocument.parentNode.insertAdjacentHTML('beforeend','<a><img class="outwardLink" src="data:image/gif;base64, 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" alt="Download from Sci-Hub" title="Full Text(opens in a new window)" height="15" width="101"></a><a style="font-size: 12px; color: green; text-decoration: underline;" href="javascript:;">Donate to Sci-Hub project</a><span class="divider">|</span>');
fullDocument.parentNode.children[4].addEventListener("click", function(){window.open(sciHubUrl+documentId);});
//setAttribute('onclick','window.open(\"'+sciHubUrl+documentId+'\");');
fullDocument.parentNode.children[5].addEventListener("click", function(){donate(sciHubUrl);});
//setAttribute('onclick',donate(sciHubUrl));
}
else if(site.includes("://apps.webofknowledge.com/")){
var mode;
var genericID=document.getElementsByClassName("block-record-info block-record-info-source")[0];
for(i=4;i<=genericID.children.length;i++){
var compare=genericID.children[i].children[0].innerHTML;
if((compare.localeCompare("DOI:")==0)||(compare.localeCompare("PMID:")==0)){
if(genericID.children[i].children.length<2){
documentId=genericID.children[i].lastChild.data.toString();
mode=1;
}
else{
documentId=genericID.children[i].children[1].innerHTML;
mode=0;
}
break;
}
}
if(documentId!==undefined){
addButtonWOS(sciHubUrl,documentId,mode);
}
}
else if(site.includes("://scholar.google.")){
var resourcesList=document.getElementById('gs_res_ccl_mid');
var results=resourcesList.children.length;
var gs_ggs_gs_fl;
for(i=0;i<results;i++){
try{
if(resourcesList.children[i].getElementsByClassName("gs_ggs gs_fl").length==0){
gs_ggs_gs_fl=document.createElement("div");
gs_ggs_gs_fl.setAttribute("class","gs_ggs gs_fl");
resourcesList.children[i].insertBefore(gs_ggs_gs_fl,resourcesList.children[i].firstChild);
addButtonScholar(sciHubUrl,resourcesList.children[i].firstChild);
}
else{
addButtonScholar(sciHubUrl,resourcesList.children[i].firstChild);
}
}
catch(err){
alert(err+"//"+resourcesList.children[i].lastElementChild.innerHTML);
}
}
}
else if(site.includes("://sci-hub.")){
var sPDFLink = document.getElementById("save").children[0].children[0].getAttribute("onClick");
sPDFLink=sPDFLink.substring(15,sPDFLink.length-1);
window.open(sPDFLink,"_blank");
window.close();
}
})();
function addButtonWOS(sciHubUrl,documentId,mode){
try{
var site=window.location.href.toString();
var sciHubBtn;
var list;
if(site.includes("full_record.do")){
list=document.getElementsByClassName("l-columns-item")[0];
try{
list.appendChild(list.children[1].cloneNode(true));
}
catch(err){
list.appendChild(list.children[0].cloneNode(true));
}
if(mode==0){
sciHubBtn=list.lastChild.children[1].children[0];
}
else if(mode==1){
sciHubBtn=list.lastChild.children[1];
}
sciHubBtn.removeAttribute("href");
sciHubBtn.setAttribute("alt","Break the walls and free the knowledge that publishers taken hostage\!");
sciHubBtn.setAttribute("title","Break the walls and free the knowledge that publishers taken hostage\!");
sciHubBtn.innerHTML="Full Text from Sci-Hub";
sciHubBtn.addEventListener("click", function(){window.open(sciHubUrl+documentId);});
list.insertAdjacentHTML('beforeend','<li><a style="font-size: 12px; color: green; text-decoration: underline;" href="javascript:;">Donate to Sci-Hub project</a></li>');
list.lastChild.lastChild.removeAttribute("href");
list.lastChild.lastChild.addEventListener("click", function(){donate(sciHubUrl);});
}
else if(site.includes("CitedFullRecord.do")){
list=document.getElementsByClassName("popup-ft-list")[0];
try{
list.appendChild(list.children[0].cloneNode(true));
}
catch(err){
list.appendChild(list.children[1].cloneNode(true));
}
if(mode==0){
sciHubBtn=list.lastChild.children[0].children[0];
}
else if(mode==1){
sciHubBtn=list.lastChild.children[1];
}
sciHubBtn.removeAttribute("href");
sciHubBtn.removeAttribute("onclick");
sciHubBtn.setAttribute("alt","Break the walls and free the knowledge that publishers taken hostage\!");
sciHubBtn.setAttribute("title","Break the walls and free the knowledge that publishers taken hostage\!");
sciHubBtn.innerHTML="Full Text from Sci-Hub";
sciHubBtn.addEventListener("click", function(){window.open(sciHubUrl+documentId);});
list.insertAdjacentHTML('beforeend','<li><a style="font-size: 12px; color: green; text-decoration: underline;" href="javascript:;">Donate to Sci-Hub project</a></li>');
list.lastChild.lastChild.removeAttribute("href");
list.lastChild.lastChild.addEventListener("click", function(){donate(sciHubUrl);});
}
}
catch(err){
console.log(err);
}
//setAttribute('onclick',donate(sciHubUrl));
}
function addButtonScholar(sciHubUrl,linkDiv){
var link=linkDiv.parentNode.getElementsByClassName("gs_rt")[0].lastChild.href;
var creatingElement;
if((link!=undefined)&&(link.search("patents.google")==-1)){
creatingElement=document.createElement("div");
creatingElement.setAttribute("class","gs_ggsd");
creatingElement.innerHTML='<a>Full Text on Sci-Hub</a>';
linkDiv.appendChild(creatingElement);
linkDiv.lastChild.addEventListener("click", function(){window.open(sciHubUrl+link);});
//setAttribute("onclick",'window.open(\"'+sciHubUrl+link+'\");');
}
}
function donate(sciHubUrl){
window.open(sciHubUrl+'#donate');
}