| 1 | using System; |
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| 2 | using System.Collections.Generic; |
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| 3 | using System.IO; |
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| 4 | using System.Net; |
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| 5 | using System.Text; |
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| 6 | using System.Threading; |
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| 7 | using System.Web; |
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| 8 | using System.Web.Script.Serialization; |
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| 9 | using System.Xml; |
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| 10 | using Rss; |
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| 11 | |
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| 12 | public class Twitterbot |
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| 13 | { |
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| 14 | public const string TwitterUrl = "http://twitter.com/statuses/update.xml"; |
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| 15 | public const string TinyUrl = "http://urlenco.de/PostJSON.aspx?encode="; |
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| 16 | public const int TwitterMax = 3; // maximum number of feed updates to pull |
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| 17 | public const int HistoryMax = 10; // maximum number of backlogged feed items to store |
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| 18 | |
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| 19 | public static void Main(string[] args) |
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| 20 | { |
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| 21 | bool slowAtNight = false; |
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| 22 | |
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| 23 | if ( (args.Length < 3) || (args.Length > 4) ) |
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| 24 | { |
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| 25 | Console.WriteLine("Twitterbot.exe <feed file> <minutes to sleep> <night time slowdown>"); |
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| 26 | Console.WriteLine("Usage:"); |
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| 27 | Console.WriteLine("mono Twitterbot.exe feeds.xml 30 yes"); |
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| 28 | |
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| 29 | Console.WriteLine(""); |
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| 30 | Console.WriteLine("Enabling night time slowdown will cause the Twitterbot to double its"); |
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| 31 | Console.WriteLine("sleep interval between the hours of 12:00 a.m. and 6 a.m."); |
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| 32 | return; |
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| 33 | } |
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| 34 | |
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| 35 | string feedFile = args[0]; |
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| 36 | int sleep = Convert.ToInt32(args[1]); |
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| 37 | |
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| 38 | if ( (args[2] == "yes") || (args[2] == "y") ) |
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| 39 | slowAtNight = true; |
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| 40 | |
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| 41 | List<Feed> feedList = new List<Feed>(); |
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| 42 | |
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| 43 | Console.WriteLine("Reading {0} and looping {1} minutes", feedFile, sleep); |
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| 44 | |
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| 45 | /* |
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| 46 | * The following block is quite basic, open the feed xml file and |
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| 47 | * generate a List of Feed objects. |
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| 48 | */ |
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| 49 | //////////////////////////////////////////////////////////////////////// |
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| 50 | XmlDocument feedXml = new XmlDocument(); |
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| 51 | XmlNodeList feeds; |
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| 52 | FileStream stream; |
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| 53 | |
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| 54 | if (File.Exists(feedFile)) |
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| 55 | { |
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| 56 | stream = File.OpenRead(feedFile); |
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| 57 | } |
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| 58 | else |
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| 59 | { |
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| 60 | Console.WriteLine("File {0} not found", feedFile); |
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| 61 | return; |
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| 62 | } |
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| 63 | |
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| 64 | feedXml.Load(stream); |
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| 65 | feeds = feedXml.GetElementsByTagName("feed"); |
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| 66 | |
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| 67 | foreach (XmlNode feed in feeds) |
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| 68 | { |
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| 69 | string name = feed.Attributes["name"].InnerText; |
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| 70 | string url = feed.Attributes["url"].InnerText; |
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| 71 | string twitter = feed.Attributes["twitter"].InnerText; |
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| 72 | string pass = feed.Attributes["password"].InnerText; |
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| 73 | |
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| 74 | feedList.Add(new Feed(name, url, twitter, pass)); |
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| 75 | } |
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| 76 | |
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| 77 | stream.Close(); |
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| 78 | //////////////////////////////////////////////////////////////////////// |
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| 79 | //////////////////////////////////////////////////////////////////////// |
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| 80 | |
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| 81 | |
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| 82 | /* |
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| 83 | * Our core runloop will iterate every 'sleep' minutes, first udpating |
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| 84 | * each one of our feeds, checking for duplicates, posting new entries |
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| 85 | * to the Feed's twitter account, and finally backlogging entries |
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| 86 | */ |
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| 87 | //////////////////////////////////////////////////////////////////////// |
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| 88 | do |
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| 89 | { |
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| 90 | foreach (Feed feed in feedList) |
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| 91 | { |
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| 92 | Console.WriteLine("Reading {0}", feed.Name); |
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| 93 | try |
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| 94 | { |
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| 95 | HttpWebRequest rssRequest = GenerateGetOrPostRequest(feed.Url, "GET", null, null, null); |
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| 96 | feed.Rss = RssFeed.Read(rssRequest); |
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| 97 | } |
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| 98 | catch (Exception ex) |
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| 99 | { |
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| 100 | Console.WriteLine("RSS.NET received an exception!{0}{1}", |
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| 101 | Environment.NewLine, ex); |
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| 102 | continue; |
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| 103 | } |
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| 104 | |
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| 105 | List<RssItem> tempList = new List<RssItem>(); |
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| 106 | |
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| 107 | foreach (RssChannel channel in feed.Rss.Channels) |
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| 108 | { |
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| 109 | int count = 0; |
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| 110 | |
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| 111 | foreach (RssItem item in channel.Items) |
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| 112 | { |
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| 113 | if (count == TwitterMax) |
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| 114 | break; |
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| 115 | if (feed.LastItems.Count > 0) |
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| 116 | { |
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| 117 | bool found = false; |
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| 118 | foreach (RssItem lastItem in feed.LastItems) |
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| 119 | { |
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| 120 | if (item.Title == lastItem.Title) |
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| 121 | { |
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| 122 | found = true; |
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| 123 | break; |
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| 124 | } |
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| 125 | } |
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| 126 | |
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| 127 | if (!found) |
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| 128 | tempList.Add(item); |
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| 129 | } |
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| 130 | else |
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| 131 | { |
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| 132 | tempList.Add(item); |
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| 133 | } |
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| 134 | ++count; |
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| 135 | } |
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| 136 | break; // on the off-chance there is more than one channel |
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| 137 | } |
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| 138 | |
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| 139 | foreach (RssItem item in tempList) |
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| 140 | { |
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| 141 | // Prepare to post to twitter |
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| 142 | string post = PrepareTwitterStatus(item); |
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| 143 | Console.WriteLine("[{0}] Preparing post: {1}", DateTime.Now, post); |
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| 144 | |
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| 145 | if (!PostToTwitter(feed, post)) |
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| 146 | Console.WriteLine("[{0}] Failed to post to twitter!", DateTime.Now); |
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| 147 | |
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| 148 | // Patiently count to five to reduce spammage |
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| 149 | Thread.Sleep(5000); |
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| 150 | } |
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| 151 | // Add our added items to the backlog list |
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| 152 | feed.AddItems(tempList); |
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| 153 | } |
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| 154 | Console.WriteLine("--------"); |
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| 155 | |
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| 156 | // If we're slowing down at night, check to see if we're between 12:00 and 6:00 exclusive |
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| 157 | if ( (slowAtNight) && (DateTime.Now.Hour >= 0) && (DateTime.Now.Hour < 6) ) |
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| 158 | { |
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| 159 | int slowSleep = (sleep * 2); |
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| 160 | Console.WriteLine("Doubling interval of {0} minute(s) to {1} minute(s) for night time hours", sleep, slowSleep); |
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| 161 | Thread.Sleep((slowSleep * 1000)*60); |
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| 162 | } |
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| 163 | else |
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| 164 | { |
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| 165 | Thread.Sleep((sleep * 1000)*60); |
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| 166 | } |
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| 167 | } while (true); |
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| 168 | //////////////////////////////////////////////////////////////////////// |
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| 169 | //////////////////////////////////////////////////////////////////////// |
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| 170 | } |
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| 171 | |
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| 172 | |
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| 173 | public static bool PostToTwitter(Feed feed, string post) |
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| 174 | { |
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| 175 | HttpWebRequest request = null; |
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| 176 | string returnString = string.Empty; |
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| 177 | HttpWebResponse response = null; |
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| 178 | |
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| 179 | try |
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| 180 | { |
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| 181 | request = GenerateGetOrPostRequest(TwitterUrl, "POST", string.Format("status={0}", post), |
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| 182 | feed.TwitterName, feed.TwitterPass); |
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| 183 | response = (HttpWebResponse)request.GetResponse(); |
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| 184 | Stream responseStream = response.GetResponseStream( ); |
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| 185 | StreamReader reader = new StreamReader(responseStream,Encoding.UTF8); |
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| 186 | |
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| 187 | try |
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| 188 | { |
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| 189 | returnString = reader.ReadToEnd( ); |
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| 190 | } |
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| 191 | catch (Exception ex) |
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| 192 | { |
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| 193 | Console.WriteLine("Received exception! {0}{1}", Environment.NewLine, ex); |
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| 194 | return false; |
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| 195 | } |
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| 196 | finally |
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| 197 | { |
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| 198 | if (reader != null) |
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| 199 | reader.Close(); |
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| 200 | } |
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| 201 | } |
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| 202 | catch (Exception ex) |
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| 203 | { |
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| 204 | Console.WriteLine("Received exception! {0}{1}", Environment.NewLine, ex); |
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| 205 | return false; |
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| 206 | } |
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| 207 | finally |
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| 208 | { |
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| 209 | if (response != null) |
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| 210 | response.Close(); |
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| 211 | } |
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| 212 | |
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| 213 | return true; |
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| 214 | } |
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| 215 | |
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| 216 | |
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| 217 | public static string PrepareTwitterStatus(RssItem item) |
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| 218 | { |
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| 219 | string postString; |
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| 220 | string titleString = string.Empty; |
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| 221 | bool tainted = false; |
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| 222 | |
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| 223 | // This wee little bit of information should ensure we don't add any ' shit into the string |
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| 224 | foreach (char oneChar in item.Title.ToCharArray()) |
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| 225 | { |
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| 226 | if ( (oneChar == ';') && (tainted) ) |
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| 227 | { |
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| 228 | tainted = false; |
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| 229 | continue; |
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| 230 | } |
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| 231 | else if (oneChar == '&') |
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| 232 | { |
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| 233 | tainted = true; |
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| 234 | continue; |
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| 235 | } |
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| 236 | else if (oneChar == ';') |
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| 237 | { |
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| 238 | continue; |
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| 239 | } |
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| 240 | else |
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| 241 | { |
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| 242 | if (!tainted) |
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| 243 | titleString += oneChar; |
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| 244 | } |
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| 245 | } |
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| 246 | |
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| 247 | if (item.Title.Length > 124) |
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| 248 | { |
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| 249 | postString = titleString.Substring(0,124); |
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| 250 | postString += ".. "; |
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| 251 | } |
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| 252 | else |
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| 253 | { |
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| 254 | postString = titleString; |
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| 255 | } |
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| 256 | |
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| 257 | Console.WriteLine(item.Link); |
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| 258 | postString += string.Format(": {0}", FetchTinyUrl(item.Link)); |
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| 259 | |
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| 260 | return postString; |
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| 261 | } |
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| 262 | |
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| 263 | |
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| 264 | public static string FetchTinyUrl(Uri longUrl) |
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| 265 | { |
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| 266 | string tinyurl; |
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| 267 | string target_url = HttpUtility.UrlEncode(longUrl.ToString()); |
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| 268 | |
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| 269 | HttpWebRequest request = (HttpWebRequest)WebRequest.Create(string.Format("{0}{1}", TinyUrl, target_url)); |
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| 270 | HttpWebResponse response = null; |
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| 271 | |
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| 272 | try |
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| 273 | { |
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| 274 | response = (HttpWebResponse)request.GetResponse(); |
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| 275 | Stream responseStream = response.GetResponseStream( ); |
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| 276 | StreamReader reader = new StreamReader(responseStream, Encoding.UTF8); |
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| 277 | |
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| 278 | try |
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| 279 | { |
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| 280 | tinyurl = reader.ReadToEnd(); |
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| 281 | } |
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| 282 | catch (Exception ex) |
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| 283 | { |
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| 284 | Console.WriteLine("Received exception! {0}{1}", Environment.NewLine, ex); |
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| 285 | return string.Empty; |
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| 286 | } |
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| 287 | finally |
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| 288 | { |
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| 289 | if (reader != null) |
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| 290 | reader.Close(); |
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| 291 | } |
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| 292 | } |
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| 293 | catch (Exception ex) |
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| 294 | { |
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| 295 | Console.WriteLine("Received exception! {0}{1}", Environment.NewLine, ex); |
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| 296 | return string.Empty; |
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| 297 | } |
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| 298 | finally |
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| 299 | { |
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| 300 | if (response != null) |
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| 301 | response.Close(); |
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| 302 | } |
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| 303 | |
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| 304 | JavaScriptSerializer serializer = new JavaScriptSerializer(); |
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| 305 | Dictionary<string, string> results = serializer.Deserialize<Dictionary<string, string>>(tinyurl); |
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| 306 | return results["encoded"]; |
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| 307 | } |
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| 308 | |
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| 309 | |
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| 310 | public static HttpWebRequest GenerateGetOrPostRequest(string uriString, string method, string postData, string user, string pass) |
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| 311 | { |
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| 312 | if ((method.ToUpper() != "GET") && (method.ToUpper() != "POST")) |
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| 313 | throw new ArgumentException(method + " is not a valid method. Use GET or POST.","method"); |
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| 314 | |
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| 315 | HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(uriString); |
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| 316 | httpRequest.Method = method; |
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| 317 | httpRequest.UserAgent = "Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.13)"; |
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| 318 | |
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| 319 | if (method.ToUpper() =="POST") |
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| 320 | { |
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| 321 | if ( (user != null) && (pass != null) ) |
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| 322 | { |
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| 323 | httpRequest.Credentials = new NetworkCredential(user, pass); |
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| 324 | } |
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| 325 | |
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| 326 | // Get the bytes for the request, should be pre-escaped |
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| 327 | byte[] bytes = Encoding.UTF8.GetBytes(postData); |
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| 328 | |
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| 329 | // Set the content type of the data being posted. |
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| 330 | httpRequest.ContentType = "application/x-www-form-urlencoded"; |
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| 331 | |
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| 332 | // Set the content length of the string being posted. |
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| 333 | httpRequest.ContentLength = bytes.Length; |
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| 334 | |
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| 335 | Stream requestStream = httpRequest.GetRequestStream(); |
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| 336 | requestStream.Write(bytes,0,bytes.Length); |
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| 337 | // Done updating for POST so close the stream |
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| 338 | requestStream.Close(); |
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| 339 | } |
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| 340 | |
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| 341 | return httpRequest; |
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| 342 | } |
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| 343 | |
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| 344 | } |
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| 345 | |
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| 346 | |
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| 347 | public class Feed |
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| 348 | { |
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| 349 | public string Name; |
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| 350 | public string Url; |
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| 351 | public string TwitterName; |
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| 352 | public string TwitterPass; |
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| 353 | public RssFeed Rss; |
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| 354 | public List<RssItem> LastItems; |
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| 355 | |
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| 356 | public Feed(string name, string url, string twitter, string pass) |
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| 357 | { |
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| 358 | Name = name; |
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| 359 | Url = url; |
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| 360 | TwitterName = twitter; |
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| 361 | TwitterPass = pass; |
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| 362 | LastItems = new List<RssItem>(10); |
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| 363 | } |
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| 364 | |
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| 365 | public void AddItems(List<RssItem> items) |
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| 366 | { |
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| 367 | // If we've exceeded our max, remove items.Count from the front of the list |
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| 368 | // and add items to the end of the list |
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| 369 | if (LastItems.Count > Twitterbot.HistoryMax) |
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| 370 | { |
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| 371 | for (int i = 0; i < items.Count; ++i) |
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| 372 | { |
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| 373 | LastItems.RemoveAt(i); |
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| 374 | } |
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| 375 | } |
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| 376 | |
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| 377 | LastItems.AddRange(items); |
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| 378 | } |
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| 379 | } |
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