├── .github └── FUNDING.yml ├── LICENSE └── README.md /.github/FUNDING.yml: -------------------------------------------------------------------------------- 1 | # These are supported funding model platforms 2 | 3 | github: [justjavac] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2] 4 | patreon: # Replace with a single Patreon username 5 | open_collective: # Replace with a single Open Collective username 6 | ko_fi: # Replace with a single Ko-fi username 7 | tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel 8 | community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry 9 | liberapay: # Replace with a single Liberapay username 10 | issuehunt: # Replace with a single IssueHunt username 11 | otechie: # Replace with a single Otechie username 12 | custom: https://github.com/justjavac/buy-me-a-coffee # Replace with a single custom sponsorship URL 13 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | 341 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # {Magnet & Torrent} Search Engine 2 | 3 | 磁力链接和 BT 种子的搜索引擎 [{Magnet & Torrent}](http://mt.jjc.link) 4 | 5 | ## 系统功能和用到的技术。 6 | 7 | 系统包括几个独立的部分： 8 | 9 | - 使用 Python 的 [Scrapy](http://scrapy.org/) 框架开发的网络爬虫，用来爬取磁力链接和种子； 10 | 11 | - 使用 PHP CI 框架开发的简易网站； 12 | 13 | - 搜索引擎目前直接使用的 MySQL，将来可以考虑使用 sphinx； 14 | 15 | - 中文分词。 16 | 17 | 用 PHP 写了一个简陋版的基于逆向最大匹配算法的小类，词库呢，哈哈，直接使用了 [Chrome 的分词表](http://src.chromium.org/viewvc/chrome/trunk/deps/third_party/icu38/source/data/brkitr/cc_cedict.txt)，分词表可以在这个地址下载：。 18 | 19 | - 新词发现机制 20 | 21 | 基于搜索关键词的新词发现机制。 22 | 23 | 目前词库方面还有一个很大的问题，比如最新的电影无法分词，例如[星际穿越](http://mt.jjc.link/search/%E6%98%9F%E9%99%85%E7%A9%BF%E8%B6%8A) 会被分词为“星际”和“穿越”，因此“被偷走的那五年，**穿越**火线，极速蜗牛，了不起的盖茨比，摩登年代，**星际**迷航，乔布斯传。”也出现在了搜索结果中。 24 | 25 | 当然这也不算事大问题，但是[霍比特人](http://mt.jjc.link/search/%E9%9C%8D%E6%AF%94%E7%89%B9%E4%BA%BA)却被分词为了“霍”、“比特”、“人”了，好在搜索结果里面没有啥东西乱入。这些属于过度分词，通过增加词库内容可以解决，因此准备些一个豆瓣爬虫，将豆瓣的所有电影都加入词库，用来辅助分词。 26 | 27 | - 资源别名 28 | 29 | 这会使我们的系统更加智能，更加人性化。我们在百度搜索时，经常会遇到这样的情况，当我们搜索“开核桃利器”，百度提示我们“您要找的是不是诺基亚？”。当我们搜索“世界上最好的语言”，百度提示我们“您要找的是不是PHP？”。同样，当用户搜索“星际穿越”时，应该为用户提供Interstellar的匹配结果。 30 | 31 | 我们不用实现复杂的在线翻译，只需要继续爬取豆瓣，将电影的中英文都做成对照表就可以了。而且，为了考虑到某些宅男的特殊需求，我们还需要做一个日语的对照表。 32 | 33 | - 英文分词 34 | 35 | 英文还需要分词？空格不就是词语边界吗？你有这样的译文很正常，我最初也是这么想的，因此英文只是简单的使用了 PHP 的 `explode(' ', $query)` 函数。 36 | 37 | 但是我刚才（2015-02-01 21:59:35）看搜索日志时发现了一些问题，今天 [xart](http://mt.jjc.link/search/xart) 关键词被搜索了 169 次，而 [x-art](http://mt.jjc.link/search/x-art) 关键词仅仅被搜索了 54 次，但是 x-art 才是它的官方名词啊（不要问我为什么知道的这么多）。因此我刚刚调整了一下代码，将 xart 和 x-art 统一定向到了 x-art。 38 | 39 | - BitTorrent 低版本最初使用 Python 开发，而且是开源的，因此很多类库都是直接使用的 BitTorrent 的，也有一些类库和辅助函数直接移植到了 PHP 平台上；（Petru Paler 写的 [bencode](https://github.com/bittorrent/bencode) 太赞了，老婆问我：你为什么跪着写代码？） 40 | 41 | 了解 P2P 原理的人都知道，BT 不需要中心服务器，因为每个节点既是客户端，同时也是服务器，因此基于 0x0d 大神的 [dhtfck](https://github.com/0x0d/dhtfck) 写了一个 DHT 爬虫，它伪装为 DHT 网络中的一个节点，这样当其他客户端想下载某个 torrent 时，就会在 DHT 网络发起广播，当它询问到我的节点时，我就知道了：哦，原来有人要下载这个种子啊，那么在 DHT 网络中肯定有这个种子。于是我把这个种子的信息保存到 MySQL 中。 42 | 43 | 以上 DHT 的整个过程可以具体看看 [DHT 协议](http://justjavac.com/other/2015/02/01/bittorrent-dht-protocol.html)。 44 | 45 | 注意：我只是保存了 torrent 的 infohash 信息，用这个信息，可以构建一个磁力链接，但是却还没有得到种子文件，我们还得通过其它方式取得种子文件。 46 | 47 | Python 的爬虫程序是主动出击，盲目寻找。在互联网的海量网页中寻找种子和磁力链接。而 DHT 爬虫则变成了被动等待，当别人来询问时，就把它的询问结果记录下来，如果一个种子被询问了很多次，则说明这个种子是一个热门种子，这是 Python 爬虫无法做到的。 48 | 49 | 由于 BitTorrent 开源版本使用的 Python，因此我的 DHT 爬虫也使用了 Python。作为一个服务器，肯定要使用 twisted 框架，熟悉 nodejs 的同学一定知道这个框架的特性：异步网络 IO，虽然大部分开发者都是通过 nodejs 才了解了异步 IO，但是 twisted 要比 nodejs 早了 N 年。 50 | 51 | 当前运行的爬虫是一个非常简陋的版本，是我一周前写的一个多线程的基于 Socket 的 DHT 服务器。截至到现在（2015年2月1日），已经运行了 6 天了，总共收集到了 45,234,859 个磁力链接。 52 | --------------------------------------------------------------------------------