//
// System.Web.CapabilitiesLoader
//
// Loads data from browscap.ini file provided by Gary J. Keith from
// http://www.GaryKeith.com/browsers. Please don't abuse the
// site when updating browscap.ini file. Use the update-browscap.exe tool.
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (c) 2003-2009 Novell, Inc. (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Collections.Specialized;
using System.Globalization;
using System.IO;
using System.Text.RegularExpressions;
using System.Web.Configuration;
using System.Web.Util;
namespace System.Web{
sealed class BrowserData
{
static char [] wildchars = new char [] {'*', '?'};
object this_lock = new object ();
BrowserData parent;
string text;
string pattern;
#if TARGET_JVM
java.util.regex.Pattern regex;
#else
Regex regex;
#endif
ListDictionary data;
public BrowserData (string pattern)
{
int norx = pattern.IndexOfAny (wildchars);
if (norx == -1) {
text = pattern;
} else {
this.pattern = pattern.Substring (norx);
text = pattern.Substring (0, norx);
if (text.Length == 0)
text = null;
this.pattern = this.pattern.Replace (".", "\\.");
this.pattern = this.pattern.Replace ("(", "\\(");
this.pattern = this.pattern.Replace (")", "\\)");
this.pattern = this.pattern.Replace ("[", "\\[");
this.pattern = this.pattern.Replace ("]", "\\]");
this.pattern = this.pattern.Replace ('?', '.');
this.pattern = this.pattern.Replace ("*", ".*");
}
}
public BrowserData Parent {
get { return parent; }
set { parent = value; }
}
public void Add (string key, string value)
{
if (data == null)
data = new ListDictionary ();
data.Add (key, value);
}
public Hashtable GetProperties (Hashtable tbl)
{
if (parent != null)
parent.GetProperties (tbl);
if (data ["browser"] != null) { // Last one (most derived) will win.
tbl ["browser"] = data ["browser"];
} else if (tbl ["browser"] == null) { // If none so far defined value set to *
tbl ["browser"] = "*";
}
if (!tbl.ContainsKey ("browsers")) {
tbl ["browsers"] = new ArrayList ();
}
((ArrayList) tbl ["browsers"]).Add (tbl["browser"]);
foreach (string key in data.Keys)
tbl [key.ToLower (Helpers.InvariantCulture).Trim ()] = data [key];
return tbl;
}
public string GetParentName ()
{
return (string)(data.Contains("parent")? data ["parent"] : null);
}
public string GetAlternateBrowser ()
{
return (pattern == null) ? text : null;
}
public string GetBrowser ()
{
if (pattern == null)
return text;
return (string) data ["browser"];
}
public bool IsMatch (string expression)
{
if (expression == null || expression.Length == 0)
return false;
if (text != null) {
if (text [0] != expression [0] ||
String.Compare (text, 1, expression, 1,
text.Length - 1, false,
Helpers.InvariantCulture) != 0) {
return false;
}
expression = expression.Substring (text.Length);
}
if (pattern == null)
return expression.Length == 0;
lock (this_lock) {
if (regex == null)
#if TARGET_JVM
regex = java.util.regex.Pattern.compile (pattern);
#else
regex = new Regex (pattern);
#endif
}
#if TARGET_JVM
return regex.matcher ((java.lang.CharSequence) (object) expression).matches ();
#else
return regex.Match (expression).Success;
#endif
}
}
sealed class CapabilitiesLoader : MarshalByRefObject
{
const int userAgentsCacheSize = 3000;
static Hashtable defaultCaps;
static readonly object lockobj = new object ();
#if TARGET_JVM
static bool loaded {
get {
return alldata != null;
}
set {
if (alldata == null)
alldata = new ArrayList ();
}
}
const string alldataKey = "System.Web.CapabilitiesLoader.alldata";
static ICollection alldata {
get {
return (ICollection) AppDomain.CurrentDomain.GetData (alldataKey);
}
set {
AppDomain.CurrentDomain.SetData (alldataKey, value);
}
}
const string userAgentsCacheKey = "System.Web.CapabilitiesLoader.userAgentsCache";
static Hashtable userAgentsCache {
get {
lock (typeof (CapabilitiesLoader)) {
Hashtable agentsCache = (Hashtable) AppDomain.CurrentDomain.GetData (userAgentsCacheKey);
if (agentsCache == null) {
agentsCache = Hashtable.Synchronized (new Hashtable (userAgentsCacheSize + 10));
AppDomain.CurrentDomain.SetData (userAgentsCacheKey, agentsCache);
}
return agentsCache;
}
}
}
#else
static volatile bool loaded;
static ICollection alldata;
static Hashtable userAgentsCache = Hashtable.Synchronized(new Hashtable(userAgentsCacheSize+10));
#endif
CapabilitiesLoader () {}
static CapabilitiesLoader ()
{
defaultCaps = new Hashtable ();
defaultCaps.Add ("activexcontrols", "False");
defaultCaps.Add ("alpha", "False");
defaultCaps.Add ("aol", "False");
defaultCaps.Add ("aolversion", "0");
defaultCaps.Add ("authenticodeupdate", "");
defaultCaps.Add ("backgroundsounds", "False");
defaultCaps.Add ("beta", "False");
defaultCaps.Add ("browser", "*");
defaultCaps.Add ("browsers", new ArrayList ());
defaultCaps.Add ("cdf", "False");
defaultCaps.Add ("clrversion", "0");
defaultCaps.Add ("cookies", "False");
defaultCaps.Add ("crawler", "False");
defaultCaps.Add ("css", "0");
defaultCaps.Add ("cssversion", "0");
defaultCaps.Add ("ecmascriptversion", "0.0");
defaultCaps.Add ("frames", "False");
defaultCaps.Add ("iframes", "False");
defaultCaps.Add ("isbanned", "False");
defaultCaps.Add ("ismobiledevice", "False");
defaultCaps.Add ("issyndicationreader", "False");
defaultCaps.Add ("javaapplets", "False");
defaultCaps.Add ("javascript", "False");
defaultCaps.Add ("majorver", "0");
defaultCaps.Add ("minorver", "0");
defaultCaps.Add ("msdomversion", "0.0");
defaultCaps.Add ("netclr", "False");
defaultCaps.Add ("platform", "unknown");
defaultCaps.Add ("stripper", "False");
defaultCaps.Add ("supportscss", "False");
defaultCaps.Add ("tables", "False");
defaultCaps.Add ("vbscript", "False");
defaultCaps.Add ("version", "0");
defaultCaps.Add ("w3cdomversion", "0.0");
defaultCaps.Add ("wap", "False");
defaultCaps.Add ("win16", "False");
defaultCaps.Add ("win32", "False");
defaultCaps.Add ("win64", "False");
defaultCaps.Add ("adapters", new Hashtable ());
defaultCaps.Add ("cancombineformsindeck", "False");
defaultCaps.Add ("caninitiatevoicecall", "False");
defaultCaps.Add ("canrenderafterinputorselectelement", "False");
defaultCaps.Add ("canrenderemptyselects", "False");
defaultCaps.Add ("canrenderinputandselectelementstogether", "False");
defaultCaps.Add ("canrendermixedselects", "False");
defaultCaps.Add ("canrenderoneventandprevelementstogether", "False");
defaultCaps.Add ("canrenderpostbackcards", "False");
defaultCaps.Add ("canrendersetvarzerowithmultiselectionlist", "False");
defaultCaps.Add ("cansendmail", "False");
defaultCaps.Add ("defaultsubmitbuttonlimit", "0");
defaultCaps.Add ("gatewayminorversion", "0");
defaultCaps.Add ("gatewaymajorversion", "0");
defaultCaps.Add ("gatewayversion", "None");
defaultCaps.Add ("hasbackbutton", "True");
defaultCaps.Add ("hidesrightalignedmultiselectscrollbars", "False");
defaultCaps.Add ("inputtype", "telephoneKeypad");
defaultCaps.Add ("iscolor", "False");
defaultCaps.Add ("jscriptversion", "0.0");
defaultCaps.Add ("maximumhreflength", "0");
defaultCaps.Add ("maximumrenderedpagesize", "2000");
defaultCaps.Add ("maximumsoftkeylabellength", "5");
defaultCaps.Add ("minorversionstring", "0.0");
defaultCaps.Add ("mobiledevicemanufacturer", "Unknown");
defaultCaps.Add ("mobiledevicemodel", "Unknown");
defaultCaps.Add ("numberofsoftkeys", "0");
defaultCaps.Add ("preferredimagemime", "image/gif");
defaultCaps.Add ("preferredrenderingmime", "text/html");
defaultCaps.Add ("preferredrenderingtype", "html32");
defaultCaps.Add ("preferredrequestencoding", "");
defaultCaps.Add ("preferredresponseencoding", "");
defaultCaps.Add ("rendersbreakbeforewmlselectandinput", "False");
defaultCaps.Add ("rendersbreaksafterhtmllists", "True");
defaultCaps.Add ("rendersbreaksafterwmlanchor", "False");
defaultCaps.Add ("rendersbreaksafterwmlinput", "False");
defaultCaps.Add ("renderswmldoacceptsinline", "True");
defaultCaps.Add ("renderswmlselectsasmenucards", "False");
defaultCaps.Add ("requiredmetatagnamevalue", "");
defaultCaps.Add ("requiresattributecolonsubstitution", "False");
defaultCaps.Add ("requirescontenttypemetatag", "False");
defaultCaps.Add ("requirescontrolstateinsession", "False");
defaultCaps.Add ("requiresdbcscharacter", "False");
defaultCaps.Add ("requireshtmladaptiveerrorreporting", "False");
defaultCaps.Add ("requiresleadingpagebreak", "False");
defaultCaps.Add ("requiresnobreakinformatting", "False");
defaultCaps.Add ("requiresoutputoptimization", "False");
defaultCaps.Add ("requiresphonenumbersasplaintext", "False");
defaultCaps.Add ("requiresspecialviewstateencoding", "False");
defaultCaps.Add ("requiresuniquefilepathsuffix", "False");
defaultCaps.Add ("requiresuniquehtmlcheckboxnames", "False");
defaultCaps.Add ("requiresuniquehtmlinputnames", "False");
defaultCaps.Add ("requiresurlencodedpostfieldvalues", "False");
defaultCaps.Add ("screenbitdepth", "1");
defaultCaps.Add ("screencharactersheight", "6");
defaultCaps.Add ("screencharacterswidth", "12");
defaultCaps.Add ("screenpixelsheight", "72");
defaultCaps.Add ("screenpixelswidth", "96");
defaultCaps.Add ("supportsaccesskeyattribute", "False");
defaultCaps.Add ("supportsbodycolor", "True");
defaultCaps.Add ("supportsbold", "False");
defaultCaps.Add ("supportscachecontrolmetatag", "True");
defaultCaps.Add ("supportscallback", "False");
defaultCaps.Add ("supportsdivalign", "True");
defaultCaps.Add ("supportsdivnowrap", "False");
defaultCaps.Add ("supportsemptystringincookievalue", "False");
defaultCaps.Add ("supportsfontcolor", "True");
defaultCaps.Add ("supportsfontname", "False");
defaultCaps.Add ("supportsfontsize", "False");
defaultCaps.Add ("supportsimagesubmit", "False");
defaultCaps.Add ("supportsimodesymbols", "False");
defaultCaps.Add ("supportsinputistyle", "False");
defaultCaps.Add ("supportsinputmode", "False");
defaultCaps.Add ("supportsitalic", "False");
defaultCaps.Add ("supportsjphonemultimediaattributes", "False");
defaultCaps.Add ("supportsjphonesymbols", "False");
defaultCaps.Add ("supportsquerystringinformaction", "True");
defaultCaps.Add ("supportsredirectwithcookie", "True");
defaultCaps.Add ("supportsselectmultiple", "True");
defaultCaps.Add ("supportsuncheck", "True");
defaultCaps.Add ("supportsxmlhttp", "False");
defaultCaps.Add ("type", "Unknown");
}
public static Hashtable GetCapabilities (string userAgent)
{
Init ();
if (userAgent != null)
userAgent = userAgent.Trim ();
if (alldata == null || userAgent == null || userAgent.Length == 0)
return defaultCaps;
Hashtable userBrowserCaps = (Hashtable) (userAgentsCache.Contains(userAgent)? userAgentsCache [userAgent] : null);
if (userBrowserCaps == null) {
foreach (BrowserData bd in alldata) {
if (bd.IsMatch (userAgent)) {
Hashtable tbl;
tbl = new Hashtable (defaultCaps);
userBrowserCaps = bd.GetProperties (tbl);
break;
}
}
if (userBrowserCaps == null)
userBrowserCaps = defaultCaps;
lock (lockobj) {
if (userAgentsCache.Count >= userAgentsCacheSize)
userAgentsCache.Clear ();
}
userAgentsCache [userAgent] = userBrowserCaps;
}
return userBrowserCaps;
}
static void Init ()
{
if (loaded)
return;
lock (lockobj) {
if (loaded)
return;
#if TARGET_J2EE
string filepath = "browscap.ini";
#else
string dir = HttpRuntime.MachineConfigurationDirectory;
string filepath = Path.Combine (dir, "browscap.ini");
if (!File.Exists (filepath)) {
// try removing the trailing version directory
dir = Path.GetDirectoryName (dir);
filepath = Path.Combine (dir, "browscap.ini");
}
#endif
try {
LoadFile (filepath);
} catch (Exception) {}
loaded = true;
}
}
#if TARGET_J2EE
static TextReader GetJavaTextReader(string filename)
{
try
{
java.lang.ClassLoader cl = (java.lang.ClassLoader)
AppDomain.CurrentDomain.GetData("GH_ContextClassLoader");
if (cl == null)
return null;
string custom = String.Concat("browscap/", filename);
java.io.InputStream inputStream = cl.getResourceAsStream(custom);
if (inputStream == null)
inputStream = cl.getResourceAsStream(filename);
if (inputStream == null)
return null;
return new StreamReader (new System.Web.J2EE.J2EEUtils.InputStreamWrapper (inputStream));
}
catch (Exception e)
{
return null;
}
}
#endif
static void LoadFile (string filename)
{
#if TARGET_J2EE
TextReader input = GetJavaTextReader(filename);
if(input == null)
return;
#else
if (!File.Exists (filename))
return;
TextReader input = new StreamReader (File.OpenRead (filename));
#endif
using (input) {
string str;
Hashtable allhash = new Hashtable ();
int aux = 0;
ArrayList browserData = new ArrayList ();
while ((str = input.ReadLine ()) != null) {
if (str.Length == 0 || str [0] == ';')
continue;
string userAgent = str.Substring (1, str.Length - 2);
BrowserData data = new BrowserData (userAgent);
ReadCapabilities (input, data);
/* Ignore default browser and file version information */
if (userAgent == "*" || userAgent == "GJK_Browscap_Version")
continue;
string key = data.GetBrowser ();
if (key == null || allhash.ContainsKey (key)) {
allhash.Add (aux++, data);
browserData.Add (data);
} else {
allhash.Add (key, data);
browserData.Add (data);
}
}
alldata = browserData;
foreach (BrowserData data in alldata) {
string pname = data.GetParentName ();
if (pname == null)
continue;
data.Parent = (BrowserData) allhash [pname];
}
}
}
static char [] eq = new char []{'='};
static void ReadCapabilities (TextReader input, BrowserData data)
{
string str, key;
string [] keyvalue;
while ((str = input.ReadLine ()) != null && str.Length != 0) {
keyvalue = str.Split (eq, 2);
key = keyvalue [0].ToLower (Helpers.InvariantCulture).Trim ();
if (key.Length == 0)
continue;
data.Add (key, keyvalue [1]);
}
}
}
}
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