org.apache.myfaces.shared_tomahawk.resource.ResourceValidationUtils Maven / Gradle / Ivy
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JSF components and utilities that can be used with any JSF implementation.
This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build
changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this
version of the Tomahawk library.
The newest version!
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.myfaces.shared_tomahawk.resource;
public class ResourceValidationUtils
{
public static boolean isValidResourceName(String resourceName)
{
return validateResourceName(resourceName, true);
}
public static boolean isValidLibraryName(String libraryName)
{
return validate(libraryName, false);
}
public static boolean isValidLibraryName(String libraryName, boolean allowSlash)
{
return validate(libraryName, allowSlash);
}
public static boolean isValidLocalePrefix(String localePrefix)
{
for (int i = 0; i < localePrefix.length(); i++)
{
char c = localePrefix.charAt(i);
if ( (c >='A' && c <='Z') || c == '_' || (c >='a' && c <='z') || (c >='0' && c <='9') )
{
continue;
}
else
{
return false;
}
}
return true;
}
private static boolean validate(String expression, boolean allowSlash)
{
if (expression.length() == 2 &&
expression.charAt(0) == '.' &&
expression.charAt(1) == '.')
{
return false;
}
for (int i = 0; i < expression.length(); i++)
{
char c = expression.charAt(i);
// Enforce NameChar convention as specified
// http://www.w3.org/TR/REC-xml/#NT-NameChar
// Valid characters for NameChar
// ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] |
// [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] |
// [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF]
// | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
// "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
// Excluding ":"
if ( (c >='A' && c <='Z') || c == '_' || (c >='a' && c <='z') ||
(c >=0xC0 && c <=0xD6) || (c >=0xD8 && c <=0xF6) ||
(c >=0xF8 && c <=0x2FF) || (c >=0x370 && c <=0x37D) ||
(c >=0x37F && c <=0x1FFF) || (c >=0x200C && c <=0x200D) ||
(c >=0x2070 && c <=0x218F) || (c >=0x2C00 && c <=0x2FEF) ||
(c >=0x3001 && c <=0xD7FF) || (c >=0xF900 && c <=0xFDCF) ||
(c >=0xFDF0 && c <=0xFFFD) || (c >=0x10000 && c <=0xEFFFF) ||
c == '-' || (c >='0' && c <='9') || c == 0xB7 || (c >=0x300 && c <=0x36F) ||
(c >=0x203F && c <=0x2040) || (allowSlash && c == '/')
)
{
continue;
}
else if (c == '.')
{
if (i+2 < expression.length())
{
char c1 = expression.charAt(i+1);
char c2 = expression.charAt(i+2);
if (c == c1 && (c2 == '/' || c2 == '\\' ) )
{
return false;
}
}
continue;
}
else
{
return false;
}
}
if (expression.length() >= 3)
{
int length = expression.length();
if ( (expression.charAt(length-3) == '/' || expression.charAt(length-3) == '\\' ) &&
expression.charAt(length-2) == '.' &&
expression.charAt(length-1) == '.' )
{
return false;
}
}
return true;
}
private static boolean validateResourceName(String expression, boolean allowSlash)
{
if (expression.length() == 2 &&
expression.charAt(0) == '.' &&
expression.charAt(1) == '.')
{
return false;
}
for (int i = 0; i < expression.length(); i++)
{
char c = expression.charAt(i);
// Enforce NameChar convention as specified
// http://www.w3.org/TR/REC-xml/#NT-NameChar
// Valid characters for NameChar
// ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] |
// [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] |
// [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF]
// | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
// "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
// Excluding ":"
// Forbidden chars by win
// < (less than)
// > (greater than)
// : (colon)
// " (double quote)
// / (forward slash)
// \ (backslash)
// | (vertical bar or pipe)
// ? (question mark)
// * (asterisk)
// Do not use chars in UNIX because they have special meaning
// *&%$|^/\~
if ( (c >='A' && c <='Z') || c == '_' || (c >='a' && c <='z') ||
(c >=0xC0 && c <=0xD6) || (c >=0xD8 && c <=0xF6) ||
(c >=0xF8 && c <=0x2FF) || (c >=0x370 && c <=0x37D) ||
(c >=0x37F && c <=0x1FFF) || (c >=0x200C && c <=0x200D) ||
(c >=0x2070 && c <=0x218F) || (c >=0x2C00 && c <=0x2FEF) ||
(c >=0x3001 && c <=0xD7FF) || (c >=0xF900 && c <=0xFDCF) ||
(c >=0xFDF0 && c <=0xFFFD) || (c >=0x10000 && c <=0xEFFFF) ||
(c == '-') || (c >='0' && c <='9') || c == 0xB7 || (c >=0x300 && c <=0x36F) ||
(c >=0x203F && c <=0x2040) || (allowSlash && c == '/') ||
(c == '!') || (c == '#') || (c == '\'') || (c == '(') || (c == ')') ||
(c == '+') || (c == ',') || (c == ';' ) || (c == '=') ||
(c == '@') || (c == '[') || (c == ']' ) || (c == '{') || (c == '}'))
{
continue;
}
else if (c == '.')
{
if (i+2 < expression.length())
{
char c1 = expression.charAt(i+1);
char c2 = expression.charAt(i+2);
if (c == c1 && (c2 == '/' || c2 == '\\' ) )
{
return false;
}
}
continue;
}
else
{
return false;
}
}
if (expression.length() >= 3)
{
int length = expression.length();
if ( (expression.charAt(length-3) == '/' || expression.charAt(length-3) == '\\' ) &&
expression.charAt(length-2) == '.' &&
expression.charAt(length-1) == '.' )
{
return false;
}
}
return true;
}
}