I2P_in_Private_Browsing_Mode_for_Firefox/script.js

browser.runtime.onMessage.addListener((request) => {
  var response = '';
  console.log(request);
  if (request.req === 'i2p-location') {
    response = 'no-alt-location';
    const metas = document.getElementsByTagName('meta');
    for (let i = 0; i < metas.length; i++) {
      try {
        tag = metas[i].getAttribute('http-equiv');
        if (tag.toUpperCase() === 'I2P-LOCATION') {
          response = metas[i].getAttribute('content');
        }
        if (tag.toUpperCase() === 'X-I2P-LOCATION') {
          response = metas[i].getAttribute('content');
        }
      } catch {};
    }
  }

  if (request.req === 'i2p-torrentlocation') {
    response = 'no-alt-location';
    const metas = document.getElementsByTagName('meta');
    var tag = document.querySelector('meta[http-equiv="i2p-torrentlocation"]');
    console.log(tag);
    if (tag) {
      response = tag.content;
      var imgs = document.getElementsByTagName('img');
      console.log('rewriting torrent link');
      for (let img of imgs) {
        let tmpsrc = new URL(img.src);
        if (tmpsrc.host == location.host) {
          img.src =
            'http://127.0.0.1:7657/i2psnark/' + tmpsrc.host + tmpsrc.pathname;
          img.onerror = function() {
            img.src = tmpsrc;
          };
        }
      }
      var videos = document.getElementsByTagName('video');
      for (let video of videos) {
        video.setAttribute('preload', 'none');
        let tmpsrc = new URL(video.currentSrc);
        if (tmpsrc.host == location.host) {
          if (!video.innerHTML.includes('127.0.0.1')) {
            innerHTML = video.innerHTML;
            topInnerHTML = video.innerHTML.replace(
              'src="',
              'src="http://127.0.0.1:7657/i2psnark/' + location.host + '/'
            );
            video.innerHTML = topInnerHTML; // + innerHTML;
            video.onerror = function() {
              video.innerHTML = topInnerHTML + innerHTML;
            };
          }
        }
      }
      var audios = document.getElementsByTagName('audio');
      for (let audio of audios) {
        audio.setAttribute('preload', 'none');
        let tmpsrc = new URL(audio.currentSrc);
        if (tmpsrc.host == location.host) {
          if (!audio.innerHTML.includes('127.0.0.1')) {
            innerHTML = audio.innerHTML;
            topInnerHTML = audio.innerHTML.replace(
              'src="',
              'src="http://127.0.0.1:7657/i2psnark/' + location.host + '/'
            );
            audio.innerHTML = topInnerHTML; // + innerHTML;
            audio.onerror = function() {
              audio.innerHTML = topInnerHTML + innerHTML;
            };
          }
        }
      }
      var links = document.getElementsByTagName('a');
      for (let link of links) {
        let tmpsrc = new URL(link.href);
        if (tmpsrc.host == location.host) {
          if (
            !tmpsrc.pathname.endsWith('html') &&
            !tmpsrc.pathname.endsWith('htm') &&
            !tmpsrc.pathname.endsWith('php') &&
            !tmpsrc.pathname.endsWith('jsp') &&
            !tmpsrc.pathname.endsWith('asp') &&
            !tmpsrc.pathname.endsWith('aspx') &&
            !tmpsrc.pathname.endsWith('atom') &&
            !tmpsrc.pathname.endsWith('rss') &&
            !tmpsrc.pathname.endsWith('/') &&
            tmpsrc.pathname.includes('.')
          ) {
            link.href =
              'http://127.0.0.1:7657/i2psnark/' + tmpsrc.host + tmpsrc.pathname;
            link.onerror = function() {
              window.location.href = tmpsrc.href;
            };
          }
        }
      }
    }
  }
  return Promise.resolve({ content: response });
});