Package org.apache.tomcat.util.http.parser

Class HttpParser

java.lang.Object
org.apache.tomcat.util.http.parser.HttpParser
public class HttpParser extends Object
HTTP header value parser implementation. Parsing HTTP headers as per RFC2616 is not always as simple as it first appears. For headers that only use tokens the simple approach will normally be sufficient. However, for the other headers, while simple code meets 99.9% of cases, there are often some edge cases that make things far more complicated. The purpose of this parser is to let the parser worry about the edge cases. It provides tolerant (where safe to do so) parsing of HTTP header values assuming that wrapped header lines have already been unwrapped. (The Tomcat header processing code does the unwrapping.)

  • Constructor Details

    • HttpParser

      public HttpParser(String relaxedPathChars, String relaxedQueryChars)

  • Method Details

    • isNotRequestTargetRelaxed

      public boolean isNotRequestTargetRelaxed(int c)

    • isAbsolutePathRelaxed

      public boolean isAbsolutePathRelaxed(int c)

    • isQueryRelaxed

      public boolean isQueryRelaxed(int c)

    • unquote

      public static String unquote(String input)

    • isToken

      public static boolean isToken(int c)

    • isToken

      public static boolean isToken(String s)
      Is the provided String a token as per RFC 7230?
      Note: token = 1 * tchar (RFC 7230)
      Since a token requires at least 1 tchar, null and the empty string ("") are not considered to be valid tokens.
      Parameters:
      s - The string to test
      Returns:
      true if the string is a valid token, otherwise false

    • isHex

      public static boolean isHex(int c)

    • isNotRequestTarget

      public static boolean isNotRequestTarget(int c)

    • isHttpProtocol

      public static boolean isHttpProtocol(int c)

    • isAlpha

      public static boolean isAlpha(int c)

    • isNumeric

      public static boolean isNumeric(int c)

    • isScheme

      public static boolean isScheme(int c)

    • isScheme

      public static boolean isScheme(String s)
      Is the provided String a scheme as per RFC 3986?
      Note: scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
      Since a scheme requires at least 1 ALPHA, null and the empty string ("") are not considered to be valid tokens.
      Parameters:
      s - The string to test
      Returns:
      true if the string is a valid scheme, otherwise false

    • isUserInfo

      public static boolean isUserInfo(int c)

    • isAbsolutePath

      public static boolean isAbsolutePath(int c)

    • isQuery

      public static boolean isQuery(int c)

    • isControl

      public static boolean isControl(int c)