• hexagonwin@lemmy.today
    1·
    13 days ago

    ok, i figured out how to download :) i used firefox devtool, might be slightly different on chromium.

    after going to a pdf page (like this), open devtools on the network tab, select XHR, filter with the string /preview/url and refresh. you’ll get one item that contains ‘url’ and ‘p’. as you also experienced the pdf is password protected.

    now they have a JS function defined named parseJData, you can use it like parseJData(p, !0) where p is the p value from the xhr response e.g. parseJData("9dd1bbb2b96776b603b2666fb3173133x8Y+a7Fx0tdy2ntJSUCmLFQQW+BMJFz+UGUrdSyaNz2FpFx2fSJvzEJ8JdWXGbeH16ac82d92bc66da09f044fe9faebaaa9", !0). That’s your pdf password.

    you totally can automate this, but there doesn’t seem to be that many PDFs (if you’re only going for that one lecture). I’d just keep the devtool open, check “persist logs” (click option button to find it), browse through all the PDF pages, and save as HAR file and write some one off script to extract all the url and p value.

    • tdTrX@lemmy.mlOPEnglish
      1·
      13 days ago

      Which part is password

      {"response":true,"url":"https://d2a5xnk4s7n8a6.cloudfront.net/w/o/5de58cc5e4b06eaef9799a5e/v/5eadee8b0cf250d48d95a674/u/69a29c32cf33e87f41f96eb5/p/assets/pdfs/2020/05/02/5eadee8b0cf250d48d95a674/file.pdf","p":"085b4cff79ec580e9687ecf41d77672feDjUk8jWDf2mBGaRtmLWv/bkykxiE4t16pD/ZQJvvuLn1AFNM35N67fA61ORomhx99cbac6aada470ee7d48d35ebc98d09d","allowDownload":false,"allowWatermark":false}

      Also there is a allowDownload How to make it true ?

      Why there are 2 sometimes 3 .pdf in network tab when there is only 1 pdf on page ?