Package nl.info.webdav.fromcatalina

Class RequestUtil

java.lang.Object
nl.info.webdav.fromcatalina.RequestUtil
public final class RequestUtil extends Object
General purpose request parsing and encoding utility methods.

  • Constructor Details

    • RequestUtil

      public RequestUtil()

  • Method Details

    • encodeCookie

      public static String encodeCookie(jakarta.servlet.http.Cookie cookie)
      Encode a cookie as per RFC 2109. The resulting string can be used as the value for a Set-Cookie header.
      Parameters:
      cookie - the cookie to encode.
      Returns:
      A string following RFC 2109.

    • 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

      public static String normalize(String path)
      Normalize a relative URI path that may have relative values ("/./", "/../", and so on ) in 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

    • parseCharacterEncoding

      public static String parseCharacterEncoding(String contentType)
      Parse the character encoding from the specified content type header. If the content type is null, or there is no explicit character encoding, null is returned.
      Parameters:
      contentType - a content type header

    • parseCookieHeader

      public static jakarta.servlet.http.Cookie[] parseCookieHeader(String header)
      Parse a cookie header into an array of cookies according to RFC 2109.
      Parameters:
      header - value of an HTTP "Cookie" header

    • parseParameters

      public static void parseParameters(Map<String,String[]> map, String 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.

      Parameters:
      map - map that accumulates the resulting parameters
      data - input string containing request parameters
      Throws:
      IllegalArgumentException - if the data is malformed
      UnsupportedEncodingException

    • 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.
      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.
      Parameters:
      str - The url-encoded string
      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)
      Decode and return the specified URL-encoded byte array.
      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.
      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

    • 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 - Encoding to use for converting hex
      Throws:
      UnsupportedEncodingException - if the data is malformed