OpenTween/Connection/HttpVarious.cs

   1 // OpenTween - Client of Twitter
   2 // Copyright (c) 2007-2011 kiri_feather (@kiri_feather) <kiri.feather@gmail.com>
   3 //           (c) 2008-2011 Moz (@syo68k)
   4 //           (c) 2008-2011 takeshik (@takeshik) <http://www.takeshik.org/>
   5 //           (c) 2010-2011 anis774 (@anis774) <http://d.hatena.ne.jp/anis774/>
   6 //           (c) 2010-2011 fantasticswallow (@f_swallow) <http://twitter.com/f_swallow>
   7 //           (c) 2011      kim_upsilon (@kim_upsilon) <https://upsilo.net/~upsilon/>
   8 // All rights reserved.
   9 //
  10 // This file is part of OpenTween.
  11 //
  12 // This program is free software; you can redistribute it and/or modify it
  13 // under the terms of the GNU General public License as published by the Free
  14 // Software Foundation; either version 3 of the License, or (at your option)
  15 // any later version.
  16 //
  17 // This program is distributed in the hope that it will be useful, but
  18 // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  19 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General public License
  20 // for more details.
  21 //
  22 // You should have received a copy of the GNU General public License along
  23 // with this program. If not, see <http://www.gnu.org/licenses/>, or write to
  24 // the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
  25 // Boston, MA 02110-1301, USA.
  26
  27 using System;
  28 using System.Net;
  29 using System.Collections.Generic;
  30 using System.Linq;
  31 using System.Text;
  32 using System.Drawing;
  33 using System.IO;
  34 using System.Drawing.Drawing2D;
  35 using OpenTween.Connection;
  36
  37
  38 namespace OpenTween
  39 {
  40     public class HttpVarious : HttpConnection
  41     {
  42         public string GetRedirectTo(string url, int timeout = 5000)
  43         {
  44             try
  45             {
  46                 HttpWebRequest req = CreateRequest(HeadMethod, new Uri(url), null);
  47                 req.Timeout = timeout;
  48                 req.AllowAutoRedirect = false;
  49                 string data;
  50                 Dictionary<string, string> head = new Dictionary<string, string>();
  51                 GetResponse(req, out data, head);
  52
  53                 string location;
  54                 return head.TryGetValue("Location", out location)
  55                     ? location
  56                     : url;
  57             }
  58             catch (Exception)
  59             {
  60                 return url;
  61             }
  62         }
  63
  64         public Image GetImage(Uri url)
  65         {
  66             return GetImage(url.AbsoluteUri);
  67         }
  68
  69         public Image GetImage(string url)
  70         {
  71             return GetImage(url, 10000);
  72         }
  73
  74         public Image GetImage(string url, int timeout)
  75         {
  76             string errmsg;
  77             return GetImage(url, "", timeout, out errmsg);
  78         }
  79
  80         public Image GetImage(string url, string referer)
  81         {
  82             string errmsg;
  83             return GetImage(url, referer, 10000, out errmsg);
  84         }
  85
  86         public Image GetImage(string url, string referer, int timeout, out string errmsg)
  87         {
  88             return GetImageInternal(CheckValidImage, url, referer, timeout, out errmsg);
  89         }
  90
  91         public Image GetIconImage(string url, int timeout)
  92         {
  93             string errmsg;
  94             return GetImageInternal(CheckValidIconImage, url, "", timeout, out errmsg);
  95         }
  96
  97         private delegate Image CheckValidImageDelegate(Image img, int width, int height);
  98
  99         private Image GetImageInternal(CheckValidImageDelegate CheckImage, string url, string referer, int timeout, out string errmsg)
 100         {
 101             try
 102             {
 103                 HttpWebRequest req = CreateRequest(GetMethod, new Uri(url), null);
 104                 if (!String.IsNullOrEmpty(referer)) req.Referer = referer;
 105                 if (timeout < 3000 || timeout > 30000)
 106                 {
 107                     req.Timeout = 10000;
 108                 }
 109                 else
 110                 {
 111                     req.Timeout = timeout;
 112                 }
 113                 Bitmap img;
 114                 HttpStatusCode ret = GetResponse(req, out img, null);
 115                 if (ret == HttpStatusCode.OK)
 116                 {
 117                     errmsg = "";
 118                 }
 119                 else
 120                 {
 121                     errmsg = ret.ToString();
 122                 }
 123                 if (img != null) img.Tag = url;
 124                 if (ret == HttpStatusCode.OK) return CheckImage(img, img.Width, img.Height);
 125                 return null;
 126             }
 127             catch (WebException ex)
 128             {
 129                 errmsg = ex.Message;
 130                 return null;
 131             }
 132             catch (Exception)
 133             {
 134                 errmsg = "";
 135                 return null;
 136             }
 137         }
 138
 139         public bool PostData(string Url, Dictionary<string, string> param)
 140         {
 141             try
 142             {
 143                 HttpWebRequest req = CreateRequest(PostMethod, new Uri(Url), param);
 144                 HttpStatusCode res = this.GetResponse(req, null);
 145                 if (res == HttpStatusCode.OK) return true;
 146                 return false;
 147             }
 148             catch (Exception)
 149             {
 150                 return false;
 151             }
 152         }
 153
 154         public bool PostData(string Url, Dictionary<string, string> param, out string content)
 155         {
 156             try
 157             {
 158                 HttpWebRequest req = CreateRequest(PostMethod, new Uri(Url), param);
 159                 HttpStatusCode res = this.GetResponse(req, out content, null);
 160                 if (res == HttpStatusCode.OK) return true;
 161                 return false;
 162             }
 163             catch (Exception)
 164             {
 165                 content = null;
 166                 return false;
 167             }
 168         }
 169
 170         public bool GetData(string Url, Dictionary<string, string> param, out string content, string userAgent)
 171         {
 172             string errmsg;
 173             return GetData(Url, param, out content, 100000, out errmsg, userAgent);
 174         }
 175
 176         public bool GetData(string Url, Dictionary<string, string> param, out string content)
 177         {
 178             return GetData(Url, param, out content, 100000);
 179         }
 180
 181         public bool GetData(string Url, Dictionary<string, string> param, out string content, int timeout)
 182         {
 183             string errmsg;
 184             return GetData(Url, param, out content, timeout, out errmsg, "");
 185         }
 186
 187         public bool GetData(string Url, Dictionary<string, string> param, out string content, int timeout, out string errmsg, string userAgent)
 188         {
 189             try
 190             {
 191                 HttpWebRequest req = CreateRequest(GetMethod, new Uri(Url), param);
 192                 if (timeout < 3000 || timeout > 100000)
 193                 {
 194                     req.Timeout = 10000;
 195                 }
 196                 else
 197                 {
 198                     req.Timeout = timeout;
 199                 }
 200                 if (!String.IsNullOrEmpty(userAgent)) req.UserAgent = userAgent;
 201                 HttpStatusCode res = this.GetResponse(req, out content, null);
 202                 if (res == HttpStatusCode.OK)
 203                 {
 204                     errmsg = "";
 205                     return true;
 206                 }
 207                 errmsg = res.ToString();
 208                 return false;
 209             }
 210             catch (Exception ex)
 211             {
 212                 content = null;
 213                 errmsg = ex.Message;
 214                 return false;
 215             }
 216         }
 217
 218         public HttpStatusCode GetContent(string method, Uri Url, Dictionary<string, string> param, out string content, Dictionary<string, string> headerInfo, string userAgent)
 219         {
 220             //Searchで使用。呼び出し元で例外キャッチしている。
 221             HttpWebRequest req = CreateRequest(method, Url, param);
 222             req.UserAgent = userAgent;
 223             return this.GetResponse(req, out content, headerInfo);
 224         }
 225
 226         public bool GetDataToFile(string Url, string savePath)
 227         {
 228             try
 229             {
 230                 HttpWebRequest req = CreateRequest(GetMethod, new Uri(Url), null);
 231                 req.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
 232                 req.UserAgent = Networking.GetUserAgentString();
 233                 using (FileStream strm = new FileStream(savePath, FileMode.Create, FileAccess.Write))
 234                 {
 235                     try
 236                     {
 237                         HttpStatusCode res = this.GetResponse(req, strm, null);
 238                         if (res == HttpStatusCode.OK) return true;
 239                         return false;
 240                     }
 241                     catch (Exception)
 242                     {
 243                         return false;
 244                     }
 245                 }
 246             }
 247             catch (Exception)
 248             {
 249                 return false;
 250             }
 251         }
 252
 253         private Image CheckValidIconImage(Image img, int width, int height)
 254         {
 255             return CheckValidImage(img, 48, 48);
 256         }
 257
 258         public Image CheckValidImage(Image img, int width, int height)
 259         {
 260             if (img == null) return null;
 261
 262             Bitmap bmp = null;
 263
 264             try
 265             {
 266                 bmp = new Bitmap(width, height);
 267                 using (Graphics g = Graphics.FromImage(bmp))
 268                 {
 269                     g.InterpolationMode = InterpolationMode.HighQualityBicubic;
 270                     g.PixelOffsetMode = PixelOffsetMode.HighQuality;
 271                     g.DrawImage(img, 0, 0, width, height);
 272                 }
 273                 bmp.Tag = img.Tag;
 274
 275                 Bitmap result = bmp;
 276                 bmp = null; //返り値のBitmapはDisposeしない
 277                 return result;
 278             }
 279             catch (Exception)
 280             {
 281                 bmp?.Dispose();
 282
 283                 bmp = new Bitmap(width, height);
 284                 bmp.Tag = img.Tag;
 285
 286                 Bitmap result = bmp;
 287                 bmp = null; //返り値のBitmapはDisposeしない
 288                 return result;
 289             }
 290             finally
 291             {
 292                 bmp?.Dispose();
 293                 img.Dispose();
 294             }
 295         }
 296     }
 297 }