2007-03-22 10:30:00 -07:00
|
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
|
|
*
|
|
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
|
|
* the License. You may obtain a copy of the License at
|
|
|
|
* http://www.mozilla.org/MPL/
|
|
|
|
*
|
|
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
|
|
* for the specific language governing rights and limitations under the
|
|
|
|
* License.
|
|
|
|
*
|
|
|
|
* The Original Code is Url Classifier code
|
|
|
|
*
|
|
|
|
* The Initial Developer of the Original Code is
|
|
|
|
* Google Inc.
|
|
|
|
* Portions created by the Initial Developer are Copyright (C) 2007
|
|
|
|
* the Initial Developer. All Rights Reserved.
|
|
|
|
*
|
|
|
|
* Contributor(s):
|
|
|
|
*
|
|
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
|
|
* the provisions above, a recipient may use your version of this file under
|
|
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
|
|
*
|
|
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
|
|
|
|
#include "nsEscape.h"
|
|
|
|
#include "nsString.h"
|
|
|
|
#include "nsUrlClassifierUtils.h"
|
|
|
|
|
|
|
|
static char int_to_hex_digit(PRInt32 i)
|
|
|
|
{
|
|
|
|
NS_ASSERTION((i >= 0) && (i <= 15), "int too big in int_to_hex_digit");
|
2007-07-08 00:08:04 -07:00
|
|
|
return static_cast<char>(((i < 10) ? (i + '0') : ((i - 10) + 'A')));
|
2007-03-22 10:30:00 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
nsUrlClassifierUtils::nsUrlClassifierUtils() : mEscapeCharmap(nsnull)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
nsresult
|
|
|
|
nsUrlClassifierUtils::Init()
|
|
|
|
{
|
|
|
|
// Everything but alpha numerics, - and .
|
|
|
|
mEscapeCharmap = new Charmap(0xffffffff, 0xfc009fff, 0xf8000001, 0xf8000001,
|
|
|
|
0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff);
|
|
|
|
if (!mEscapeCharmap)
|
|
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMPL_ISUPPORTS1(nsUrlClassifierUtils, nsIUrlClassifierUtils)
|
|
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// nsIUrlClassifierUtils
|
|
|
|
|
|
|
|
/* ACString canonicalizeURL (in ACString url); */
|
|
|
|
NS_IMETHODIMP
|
|
|
|
nsUrlClassifierUtils::CanonicalizeURL(const nsACString & url, nsACString & _retval)
|
|
|
|
{
|
|
|
|
nsCAutoString decodedUrl(url);
|
|
|
|
nsCAutoString temp;
|
|
|
|
while (NS_UnescapeURL(decodedUrl.get(), decodedUrl.Length(), 0, temp)) {
|
|
|
|
decodedUrl.Assign(temp);
|
|
|
|
temp.Truncate();
|
|
|
|
}
|
|
|
|
SpecialEncode(decodedUrl, _retval);
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
NS_IMETHODIMP
|
|
|
|
nsUrlClassifierUtils::EscapeHostname(const nsACString & hostname,
|
|
|
|
nsACString & _retval)
|
|
|
|
{
|
|
|
|
const char* curChar = hostname.BeginReading();
|
|
|
|
const char* end = hostname.EndReading();
|
|
|
|
while (curChar != end) {
|
2007-07-08 00:08:04 -07:00
|
|
|
unsigned char c = static_cast<unsigned char>(*curChar);
|
2007-03-22 10:30:00 -07:00
|
|
|
if (mEscapeCharmap->Contains(c)) {
|
|
|
|
_retval.Append('%');
|
|
|
|
_retval.Append(int_to_hex_digit(c / 16));
|
|
|
|
_retval.Append(int_to_hex_digit(c % 16));
|
|
|
|
} else {
|
|
|
|
_retval.Append(*curChar);
|
|
|
|
}
|
|
|
|
++curChar;
|
|
|
|
}
|
|
|
|
|
|
|
|
return NS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// non-interface methods
|
|
|
|
|
|
|
|
// This function will encode all "special" characters in typical url
|
|
|
|
// encoding, that is %hh where h is a valid hex digit. See the comment in
|
|
|
|
// the header file for details.
|
|
|
|
PRBool
|
|
|
|
nsUrlClassifierUtils::SpecialEncode(const nsACString & url, nsACString & _retval)
|
|
|
|
{
|
|
|
|
PRBool changed = PR_FALSE;
|
|
|
|
const char* curChar = url.BeginReading();
|
|
|
|
const char* end = url.EndReading();
|
|
|
|
|
|
|
|
while (curChar != end) {
|
2007-07-08 00:08:04 -07:00
|
|
|
unsigned char c = static_cast<unsigned char>(*curChar);
|
2007-03-22 10:30:00 -07:00
|
|
|
if (ShouldURLEscape(c)) {
|
|
|
|
// We don't want to deal with 0, as it can break certain strings, just
|
|
|
|
// encode as one.
|
|
|
|
if (c == 0)
|
|
|
|
c = 1;
|
|
|
|
|
|
|
|
_retval.Append('%');
|
|
|
|
_retval.Append(int_to_hex_digit(c / 16));
|
|
|
|
_retval.Append(int_to_hex_digit(c % 16));
|
|
|
|
|
|
|
|
changed = PR_TRUE;
|
|
|
|
} else {
|
|
|
|
_retval.Append(*curChar);
|
|
|
|
}
|
|
|
|
curChar++;
|
|
|
|
}
|
|
|
|
return changed;
|
|
|
|
}
|
|
|
|
|
|
|
|
PRBool
|
|
|
|
nsUrlClassifierUtils::ShouldURLEscape(const unsigned char c) const
|
|
|
|
{
|
|
|
|
return c <= 32 || c == '%' || c >=127;
|
|
|
|
}
|