org.apache.catalina.util
Class RequestUtil

java.lang.Object
  org.apache.catalina.util.RequestUtil

public final class RequestUtil
extends Object

General purpose request parsing and encoding utility methods.

Version:

$Id: RequestUtil.java 1239053 2012-02-01 10:52:00Z markt $

Author:

Craig R. McClanahan, Tim Tye

Constructor Summary

RequestUtil()

Method Summary

static String	filter(String message) Filter the specified message string for characters that are sensitive in HTML.
static String	normalize(String path) Deprecated. Deprecated to resolve a circular package dependency and will be removed in Tomcat 8.0.x. Use RequestUtil.normalize(String) as a replacement.
static String	normalize(String path, boolean replaceBackSlash) Deprecated. Deprecated to resolve a circular package dependency and will be removed in Tomcat 8.0.x. Use RequestUtil.normalize(String, boolean) as a replacement.
static void	parseParameters(Map<String,String[]> map, byte[] data, String encoding) Append request parameters from the specified String to the specified Map.
static void	parseParameters(Map<String,String[]> map, String data, String encoding) Append request parameters from the specified String to the specified Map.
static String	URLDecode(byte[] bytes) Decode and return the specified URL-encoded byte array.
static String	URLDecode(byte[] bytes, String enc) Decode and return the specified URL-encoded byte array.
static String	URLDecode(byte[] bytes, String enc, boolean isQuery) Decode and return the specified URL-encoded byte array.
static String	URLDecode(String str) Decode and return the specified URL-encoded String.
static String	URLDecode(String str, String enc) Decode and return the specified URL-encoded String.
static String	URLDecode(String str, String enc, boolean isQuery) Decode and return the specified URL-encoded String.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RequestUtil

public RequestUtil()

Method Detail

filter

public static String filter(String message)

Filter the specified message string for characters that are sensitive in HTML. This avoids potential attacks caused by including JavaScript codes in the request URL that is often reported in error messages.

Parameters:

message - The message string to be filtered

normalize

@Deprecated
public static String normalize(String path)

Deprecated. Deprecated to resolve a circular package dependency and will be removed in Tomcat 8.0.x. Use RequestUtil.normalize(String) as a replacement.

Normalize a relative URI path that may have relative values ("/./", "/../", and so on ) it it. WARNING - This method is useful only for normalizing application-generated paths. It does not try to perform security checks for malicious input.

Parameters:

path - Relative path to be normalized

normalize

@Deprecated
public static String normalize(String path,
                                          boolean replaceBackSlash)

Deprecated. Deprecated to resolve a circular package dependency and will be removed in Tomcat 8.0.x. Use RequestUtil.normalize(String, boolean) as a replacement.

Normalize a relative URI path that may have relative values ("/./", "/../", and so on ) it it. WARNING - This method is useful only for normalizing application-generated paths. It does not try to perform security checks for malicious input.

Parameters:

path - Relative path to be normalized

replaceBackSlash - Should '\\' be replaced with '/'

parseParameters

public static void parseParameters(Map<String,String[]> map,
                                   String data,
                                   String encoding)

Append request parameters from the specified String to the specified Map. It is presumed that the specified Map is not accessed from any other thread, so no synchronization is performed.

IMPLEMENTATION NOTE: URL decoding is performed individually on the parsed name and value elements, rather than on the entire query string ahead of time, to properly deal with the case where the name or value includes an encoded "=" or "&" character that would otherwise be interpreted as a delimiter.

Parameters:

map - Map that accumulates the resulting parameters

data - Input string containing request parameters

encoding - The encoding to use; encoding must not be null. If an unsupported encoding is specified the parameters will not be parsed and the map will not be modified

URLDecode

public static String URLDecode(String str)

Decode and return the specified URL-encoded String. When the byte array is converted to a string, the system default character encoding is used... This may be different than some other servers. It is assumed the string is not a query string.

Parameters:

str - The url-encoded string

Throws:

IllegalArgumentException - if a '%' character is not followed by a valid 2-digit hexadecimal number

URLDecode

public static String URLDecode(String str,
                               String enc)

Decode and return the specified URL-encoded String. It is assumed the string is not a query string.

Parameters:

str - The url-encoded string

enc - The encoding to use; if null, the default encoding is used. If an unsupported encoding is specified null will be returned

Throws:

IllegalArgumentException - if a '%' character is not followed by a valid 2-digit hexadecimal number

URLDecode

public static String URLDecode(String str,
                               String enc,
                               boolean isQuery)

Decode and return the specified URL-encoded String.

Parameters:

str - The url-encoded string

enc - The encoding to use; if null, the default encoding is used. If an unsupported encoding is specified null will be returned

isQuery - Is this a query string being processed

Throws:

IllegalArgumentException - if a '%' character is not followed by a valid 2-digit hexadecimal number

URLDecode

public static String URLDecode(byte[] bytes)

Decode and return the specified URL-encoded byte array. It is assumed the string is not a query string.

Parameters:

bytes - The url-encoded byte array

Throws:

IllegalArgumentException - if a '%' character is not followed by a valid 2-digit hexadecimal number

URLDecode

public static String URLDecode(byte[] bytes,
                               String enc)

Decode and return the specified URL-encoded byte array. It is assumed the string is not a query string.

Parameters:

bytes - The url-encoded byte array

enc - The encoding to use; if null, the default encoding is used

Throws:

IllegalArgumentException - if a '%' character is not followed by a valid 2-digit hexadecimal number

URLDecode

public static String URLDecode(byte[] bytes,
                               String enc,
                               boolean isQuery)

Decode and return the specified URL-encoded byte array.

Parameters:

bytes - The url-encoded byte array

enc - The encoding to use; if null, the default encoding is used. If an unsupported encoding is specified null will be returned

isQuery - Is this a query string being processed

Throws:

IllegalArgumentException - if a '%' character is not followed by a valid 2-digit hexadecimal number

parseParameters

public static void parseParameters(Map<String,String[]> map,
                                   byte[] data,
                                   String encoding)
                            throws UnsupportedEncodingException

Append request parameters from the specified String to the specified Map. It is presumed that the specified Map is not accessed from any other thread, so no synchronization is performed.

IMPLEMENTATION NOTE: URL decoding is performed individually on the parsed name and value elements, rather than on the entire query string ahead of time, to properly deal with the case where the name or value includes an encoded "=" or "&" character that would otherwise be interpreted as a delimiter. NOTE: byte array data is modified by this method. Caller beware.

Parameters:

map - Map that accumulates the resulting parameters

data - Input string containing request parameters

encoding - The encoding to use; if null, the default encoding is used

Throws:

UnsupportedEncodingException - if the requested encoding is not supported.