mirror of
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96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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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