mcs/class/System.Web/System.Web/BrowserCapabilities.cs

   1 //
   2 // System.Web.HttpBrowserCapabilities
   3 //
   4 // Authors:
   5 //   Patrik Torstensson (Patrik.Torstensson@labs2.com)
   6 //   Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // (c) 2003 Novell, Inc. (http://www.novell.com)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Collections;
  33 using System.Globalization;
  34 using System.Web.Configuration;
  35 using System.Web.UI;
  36
  37 #if NET_2_0
  38 namespace System.Web.Configuration {
  39         public partial class HttpCapabilitiesBase
  40 #else
  41
  42 namespace System.Web {
  43         public partial class HttpBrowserCapabilities : HttpCapabilitiesBase
  44 #endif
  45         {
  46                 const int HaveActiveXControls = 1;
  47                 const int HaveAOL = 2;
  48                 const int HaveBackGroundSounds = 3;
  49                 const int HaveBeta = 4;
  50                 const int HaveBrowser = 5;
  51                 const int HaveCDF = 6;
  52                 //const int HaveClrVersion = 7;
  53                 const int HaveCookies = 8;
  54                 const int HaveCrawler = 9;
  55                 const int HaveEcmaScriptVersion = 10;
  56                 const int HaveFrames = 11;
  57                 const int HaveJavaApplets = 12;
  58                 const int HaveJavaScript = 13;
  59                 const int HaveMajorVersion = 14;
  60                 const int HaveMinorVersion = 15;
  61                 //const int HaveMSDomVersion = 16;
  62                 const int HavePlatform = 17;
  63                 const int HaveTables = 18;
  64                 //const int HaveTagWriter = 19;
  65                 const int HaveVBScript = 20;
  66                 const int HaveVersion = 21;
  67                 const int HaveW3CDomVersion = 22;
  68                 const int HaveWin16 = 23;
  69                 const int HaveWin32 = 24;
  70
  71                 int flags;
  72                 bool activeXControls;
  73                 bool aol;
  74                 bool backgroundSounds;
  75                 bool beta;
  76                 string browser;
  77                 bool cdf;
  78                 Version clrVersion;
  79                 bool cookies;
  80                 bool crawler;
  81                 Version ecmaScriptVersion;
  82                 bool frames;
  83                 bool javaApplets;
  84                 bool javaScript;
  85                 int majorVersion;
  86                 double minorVersion;
  87                 //Version msDomVersion;
  88                 string platform;
  89                 bool tables;
  90                 //Type tagWriter;
  91                 bool vbscript;
  92                 string version;
  93                 Version w3CDomVersion;
  94                 bool win16;
  95                 bool win32;
  96                 Version [] clrVersions;
  97                 internal string useragent;
  98
  99                 public bool ActiveXControls {
 100                         get {
 101                                 if (!Get (HaveActiveXControls)) {
 102                                         Set (HaveActiveXControls);
 103                                         activeXControls = ReadBoolean ("activexcontrols", false);
 104                                 }
 105
 106                                 return activeXControls;
 107                         }
 108                 }
 109
 110                 public bool AOL {
 111                         get {
 112                                 if (!Get (HaveAOL)) {
 113                                         Set (HaveAOL);
 114                                         aol = ReadBoolean ("aol", false);
 115                                 }
 116
 117                                 return aol;
 118                         }
 119                 }
 120
 121                 public bool BackgroundSounds {
 122                         get {
 123                                 if (!Get (HaveBackGroundSounds)) {
 124                                         Set (HaveBackGroundSounds);
 125                                         backgroundSounds = ReadBoolean ("backgroundsounds", false);
 126                                 }
 127
 128                                 return backgroundSounds;
 129                         }
 130                 }
 131
 132                 public bool Beta {
 133                         get {
 134                                 if (!Get (HaveBeta)) {
 135                                         Set (HaveBeta);
 136                                         beta = ReadBoolean ("beta", false);
 137                                 }
 138
 139                                 return beta;
 140                         }
 141                 }
 142
 143                 public string Browser {
 144                         get {
 145                                 if (!Get (HaveBrowser)) {
 146                                         Set (HaveBrowser);
 147                                         browser = this ["browser"];
 148                                         if (browser == null)
 149                                                 browser = "Unknown";
 150                                 }
 151
 152                                 return browser;
 153                         }
 154                 }
 155 #if NET_2_0
 156                 [MonoTODO]
 157                 public ArrayList Browsers {
 158                         get { throw new NotImplementedException (); }
 159                 }
 160 #endif
 161                 public bool CDF {
 162                         get {
 163                                 if (!Get (HaveCDF)) {
 164                                         Set (HaveCDF);
 165                                         cdf = ReadBoolean ("cdf", false);
 166                                 }
 167
 168                                 return cdf;
 169                         }
 170                 }
 171
 172                 public Version ClrVersion {
 173                         get {
 174                                 if (clrVersion == null)
 175                                         InternalGetClrVersions ();
 176
 177                                 return clrVersion;
 178                         }
 179                 }
 180
 181                 public bool Cookies {
 182                         get {
 183                                 if (!Get (HaveCookies)) {
 184                                         Set (HaveCookies);
 185                                         cookies = ReadBoolean ("cookies", false);
 186                                 }
 187
 188                                 return cookies;
 189                         }
 190                 }
 191
 192                 public bool Crawler {
 193                         get {
 194                                 if (!Get (HaveCrawler)) {
 195                                         Set (HaveCrawler);
 196                                         crawler = ReadBoolean ("crawler", false);
 197                                 }
 198
 199                                 return crawler;
 200                         }
 201                 }
 202
 203                 public Version EcmaScriptVersion {
 204                         get {
 205                                 if (!Get (HaveEcmaScriptVersion)) {
 206                                         string ver_str;
 207                                         Set (HaveEcmaScriptVersion);
 208                                         ver_str = this ["ecmascriptversion"];
 209                                         if (ver_str == null)
 210                                                 ecmaScriptVersion = new Version (0, 0);
 211                                         else
 212                                                 ecmaScriptVersion = new Version (ver_str);
 213                                 }
 214
 215                                 return ecmaScriptVersion;
 216                         }
 217                 }
 218
 219                 public bool Frames {
 220                         get {
 221                                 if (!Get (HaveFrames)) {
 222                                         Set (HaveFrames);
 223                                         frames = ReadBoolean ("frames", false);
 224                                 }
 225
 226                                 return frames;
 227                         }
 228                 }
 229
 230                 public bool JavaApplets {
 231                         get {
 232                                 if (!Get (HaveJavaApplets)) {
 233                                         Set (HaveJavaApplets);
 234                                         javaApplets = ReadBoolean ("javaapplets", false);
 235                                 }
 236
 237                                 return javaApplets;
 238                         }
 239                 }
 240
 241                 public bool JavaScript {
 242                         get {
 243                                 if (!Get (HaveJavaScript)) {
 244                                         Set (HaveJavaScript);
 245                                         javaScript = ReadBoolean ("javascript", false);
 246                                 }
 247
 248                                 return javaScript;
 249                         }
 250                 }
 251
 252                 public int MajorVersion {
 253                         get {
 254                                 if (!Get (HaveMajorVersion)) {
 255                                         Set (HaveMajorVersion);
 256                                         majorVersion = ReadInt32 ("majorver", 0);
 257                                 }
 258
 259                                 return majorVersion;
 260                         }
 261                 }
 262
 263                 public double MinorVersion {
 264                         get {
 265                                 if (!Get (HaveMinorVersion)) {
 266                                         Set (HaveMinorVersion);
 267                                         minorVersion = ReadDouble ("minorver", 0);
 268                                 }
 269
 270                                 return minorVersion;
 271                         }
 272                 }
 273
 274                 public Version MSDomVersion {
 275                         get {
 276                                 return new Version (0, 0);
 277                         }
 278                 }
 279
 280                 public string Platform {
 281                         get {
 282                                 if (!Get (HavePlatform)) {
 283                                         Set (HavePlatform);
 284                                         platform = this ["platform"];
 285                                         if (platform == null)
 286                                                 platform = "";
 287                                 }
 288
 289                                 return platform;
 290                         }
 291                 }
 292
 293                 public bool Tables {
 294                         get {
 295                                 if (!Get (HaveTables)) {
 296                                         Set (HaveTables);
 297                                         tables = ReadBoolean ("tables", false);
 298                                 }
 299
 300                                 return tables;
 301                         }
 302                 }
 303
 304                 public Type TagWriter {
 305                         get {
 306                                 return typeof (HtmlTextWriter);
 307                         }
 308                 }
 309
 310                 public string Type {
 311                         get {
 312                                 return Browser + MajorVersion;
 313                         }
 314                 }
 315
 316                 public bool VBScript {
 317                         get {
 318                                 if (!Get (HaveVBScript)) {
 319                                         Set (HaveVBScript);
 320                                         vbscript = ReadBoolean ("vbscript", false);
 321                                 }
 322
 323                                 return vbscript;
 324                         }
 325                 }
 326
 327                 public string Version {
 328                         get {
 329                                 if (!Get (HaveVersion)) {
 330                                         Set (HaveVersion);
 331                                         version = this ["version"];
 332                                         if (version == null)
 333                                                 version = "";
 334                                 }
 335
 336                                 return version;
 337                         }
 338                 }
 339
 340                 public Version W3CDomVersion {
 341                         get {
 342                                 if (!Get (HaveW3CDomVersion)) {
 343                                         string ver_str;
 344                                         Set (HaveW3CDomVersion);
 345                                         ver_str = this ["w3cdomversion"];
 346                                         if (ver_str == null)
 347                                                 w3CDomVersion = new Version (0, 0);
 348                                         else
 349                                                 w3CDomVersion = new Version (ver_str);
 350                                 }
 351
 352                                 return w3CDomVersion;
 353                         }
 354                 }
 355
 356                 public bool Win16 {
 357                         get {
 358                                 if (!Get (HaveWin16)) {
 359                                         Set (HaveWin16);
 360                                         win16 = ReadBoolean ("win16", false);
 361                                 }
 362
 363                                 return win16;
 364                         }
 365                 }
 366
 367                 public bool Win32 {
 368                         get {
 369                                 if (!Get (HaveWin32)) {
 370                                         Set (HaveWin32);
 371                                         win32 = ReadBoolean ("win32", false);
 372                                 }
 373
 374                                 return win32;
 375                         }
 376                 }
 377
 378 #if NET_1_1
 379                 public Version [] GetClrVersions ()
 380                 {
 381                         if ((clrVersions == null) && (clrVersion == null))
 382                                 InternalGetClrVersions ();
 383
 384                         return clrVersions;
 385                 }
 386 #endif
 387
 388                 void InternalGetClrVersions ()
 389                 {
 390                         char [] anychars = new char [] { ';', ')' };
 391                         string s = useragent;
 392                         ArrayList list = null;
 393                         int idx;
 394                         while ((s != null) && (idx = s.IndexOf (".NET CLR ")) != -1) {
 395                                 int end = s.IndexOfAny (anychars, idx + 9);
 396                                 if (end == -1)
 397                                         break;
 398
 399                                 string ver = s.Substring (idx + 9, end - idx - 9);
 400                                 Version v = null;
 401                                 try {
 402                                         v = new Version (ver);
 403                                         if (clrVersion == null || v > clrVersion)
 404                                                 clrVersion = v;
 405
 406                                         if (list == null)
 407                                                 list = new ArrayList (4);
 408
 409                                         list.Add (v);
 410                                 } catch { }
 411                                 s = s.Substring (idx + 9);
 412                         }
 413
 414                         if (list == null || list.Count == 0) {
 415                                 clrVersion = new Version ();
 416 #if NET_2_0
 417                                 clrVersions = null;
 418 #else
 419                                 clrVersions = new Version [1] { clrVersion };
 420 #endif
 421                         } else {
 422                                 list.Sort ();
 423                                 clrVersions = (Version []) list.ToArray (typeof (Version));
 424                         }
 425                 }
 426
 427                 bool ReadBoolean (string key, bool dflt)
 428                 {
 429                         string v = this [key];
 430                         if (v == null)
 431                                 return dflt;
 432
 433                         return (String.Compare (v, "True", true, CultureInfo.InvariantCulture) == 0);
 434                 }
 435
 436                 int ReadInt32 (string key, int dflt)
 437                 {
 438                         string v = this [key];
 439                         if (v == null)
 440                                 return dflt;
 441
 442                         try {
 443                                 return Int32.Parse (v);
 444                         } catch {
 445                                 return dflt;
 446                         }
 447                 }
 448
 449                 double ReadDouble (string key, double dflt)
 450                 {
 451                         string v = this [key];
 452                         if (v == null)
 453                                 return dflt;
 454
 455                         try {
 456                                 return Double.Parse (v);
 457                         } catch {
 458                                 return dflt;
 459                         }
 460                 }
 461
 462                 bool Get (int idx)
 463                 {
 464                         return (flags & (1 << idx)) != 0;
 465                 }
 466
 467                 void Set (int idx)
 468                 {
 469                         flags |= (1 << idx);
 470                 }
 471         }
 472 }