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128 lines
4.4 KiB
C++
128 lines
4.4 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Url Classifier code
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*
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* The Initial Developer of the Original Code is
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* Google Inc.
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* Portions created by the Initial Developer are Copyright (C) 2007
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsUrlClassifierUtils_h_
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#define nsUrlClassifierUtils_h_
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#include "nsAutoPtr.h"
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#include "nsIUrlClassifierUtils.h"
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#include "nsTArray.h"
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#include "nsDataHashtable.h"
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class nsUrlClassifierUtils : public nsIUrlClassifierUtils
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{
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private:
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/**
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* A fast, bit-vector map for ascii characters.
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*
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* Internally stores 256 bits in an array of 8 ints.
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* Does quick bit-flicking to lookup needed characters.
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*/
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class Charmap
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{
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public:
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Charmap(PRUint32 b0, PRUint32 b1, PRUint32 b2, PRUint32 b3,
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PRUint32 b4, PRUint32 b5, PRUint32 b6, PRUint32 b7)
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{
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mMap[0] = b0; mMap[1] = b1; mMap[2] = b2; mMap[3] = b3;
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mMap[4] = b4; mMap[5] = b5; mMap[6] = b6; mMap[7] = b7;
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}
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/**
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* Do a quick lookup to see if the letter is in the map.
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*/
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bool Contains(unsigned char c) const
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{
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return mMap[c >> 5] & (1 << (c & 31));
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}
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private:
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// Store the 256 bits in an 8 byte array.
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PRUint32 mMap[8];
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};
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public:
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nsUrlClassifierUtils();
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~nsUrlClassifierUtils() {}
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NS_DECL_ISUPPORTS
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NS_DECL_NSIURLCLASSIFIERUTILS
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nsresult Init();
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nsresult CanonicalizeHostname(const nsACString & hostname,
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nsACString & _retval);
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nsresult CanonicalizePath(const nsACString & url, nsACString & _retval);
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// This function will encode all "special" characters in typical url encoding,
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// that is %hh where h is a valid hex digit. The characters which are encoded
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// by this function are any ascii characters under 32(control characters and
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// space), 37(%), and anything 127 or above (special characters). Url is the
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// string to encode, ret is the encoded string. Function returns true if
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// ret != url.
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bool SpecialEncode(const nsACString & url,
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bool foldSlashes,
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nsACString & _retval);
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void ParseIPAddress(const nsACString & host, nsACString & _retval);
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void CanonicalNum(const nsACString & num,
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PRUint32 bytes,
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bool allowOctal,
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nsACString & _retval);
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// Convert an urlsafe base64 string to a normal base64 string.
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// This method will leave an already-normal base64 string alone.
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static void UnUrlsafeBase64(nsACString & str);
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// Takes an urlsafe-base64 encoded client key and gives back binary
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// key data
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static nsresult DecodeClientKey(const nsACString & clientKey,
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nsACString & _retval);
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private:
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// Disallow copy constructor
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nsUrlClassifierUtils(const nsUrlClassifierUtils&);
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// Function to tell if we should encode a character.
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bool ShouldURLEscape(const unsigned char c) const;
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void CleanupHostname(const nsACString & host, nsACString & _retval);
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nsAutoPtr<Charmap> mEscapeCharmap;
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};
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#endif // nsUrlClassifierUtils_h_
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