netwerk/dns/nsEffectiveTLDService.h

   1 //* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla TLD Service
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Google Inc.
  19  * Portions created by the Initial Developer are Copyright (C) 2006
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Pamela Greene <pamg.bugs@gmail.com> (original author)
  24  *   Daniel Witte <dwitte@stanford.edu>
  25  *   Jeff Walden <jwalden+code@mit.edu>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either the GNU General Public License Version 2 or later (the "GPL"), or
  29  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  30  * in which case the provisions of the GPL or the LGPL are applicable instead
  31  * of those above. If you wish to allow use of your version of this file only
  32  * under the terms of either the GPL or the LGPL, and not to allow others to
  33  * use your version of this file under the terms of the MPL, indicate your
  34  * decision by deleting the provisions above and replace them with the notice
  35  * and other provisions required by the GPL or the LGPL. If you do not delete
  36  * the provisions above, a recipient may use your version of this file under
  37  * the terms of any one of the MPL, the GPL or the LGPL.
  38  *
  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #include "nsIEffectiveTLDService.h"
  42
  43 #include "nsTHashtable.h"
  44 #include "nsString.h"
  45 #include "nsCOMPtr.h"
  46
  47 class nsIIDNService;
  48
  49 // struct for static data generated from effective_tld_names.dat
  50 struct ETLDEntry {
  51   const char* domain;
  52   PRPackedBool exception;
  53   PRPackedBool wild;
  54 };
  55
  56
  57 // hash entry class
  58 class nsDomainEntry : public PLDHashEntryHdr
  59 {
  60 public:
  61   // Hash methods
  62   typedef const char* KeyType;
  63   typedef const char* KeyTypePointer;
  64
  65   nsDomainEntry(KeyTypePointer aEntry)
  66   {
  67   }
  68
  69   nsDomainEntry(const nsDomainEntry& toCopy)
  70   {
  71     // if we end up here, things will break. nsTHashtable shouldn't
  72     // allow this, since we set ALLOW_MEMMOVE to true.
  73     NS_NOTREACHED("nsDomainEntry copy constructor is forbidden!");
  74   }
  75
  76   ~nsDomainEntry()
  77   {
  78   }
  79
  80   KeyType GetKey() const
  81   {
  82     return mData->domain;
  83   }
  84
  85   PRBool KeyEquals(KeyTypePointer aKey) const
  86   {
  87     return !strcmp(mData->domain, aKey);
  88   }
  89
  90   static KeyTypePointer KeyToPointer(KeyType aKey)
  91   {
  92     return aKey;
  93   }
  94
  95   static PLDHashNumber HashKey(KeyTypePointer aKey)
  96   {
  97     // PL_DHashStringKey doesn't use the table parameter, so we can safely
  98     // pass nsnull
  99     return PL_DHashStringKey(nsnull, aKey);
 100   }
 101
 102   enum { ALLOW_MEMMOVE = PR_TRUE };
 103
 104   void SetData(const ETLDEntry* entry) { mData = entry; }
 105
 106   PRPackedBool IsNormal() { return mData->wild || !mData->exception; }
 107   PRPackedBool IsException() { return mData->exception; }
 108   PRPackedBool IsWild() { return mData->wild; }
 109
 110 private:
 111   const ETLDEntry* mData;
 112 };
 113
 114 class nsEffectiveTLDService : public nsIEffectiveTLDService
 115 {
 116 public:
 117   NS_DECL_ISUPPORTS
 118   NS_DECL_NSIEFFECTIVETLDSERVICE
 119
 120   nsEffectiveTLDService() { }
 121   nsresult Init();
 122
 123 private:
 124   nsresult GetBaseDomainInternal(nsCString &aHostname, PRUint32 aAdditionalParts, nsACString &aBaseDomain);
 125   nsresult NormalizeHostname(nsCString &aHostname);
 126   ~nsEffectiveTLDService() { }
 127
 128   nsTHashtable<nsDomainEntry> mHash;
 129   nsCOMPtr<nsIIDNService>     mIDNService;
 130 };