288 lines
8.1 KiB
Java
288 lines
8.1 KiB
Java
/*******************************************************************************
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* Copyright (c) 2013 Ziver
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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******************************************************************************/
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package zutil.net.http;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Scanner;
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import java.util.regex.Pattern;
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public class HttpHeaderParser {
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// Some Cached regex's
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private static final Pattern colonPattern = Pattern.compile(":");
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private static final Pattern equalPattern = Pattern.compile("=");
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private static final Pattern andPattern = Pattern.compile("&");
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private static final Pattern semiColonPattern = Pattern.compile(";");
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// HTTP info
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private String type;
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private String url;
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private HashMap<String, String> url_attr;
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private float version;
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private int httpCode;
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// Parameters
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private HashMap<String, String> headers;
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private HashMap<String, String> cookies;
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/**
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* Parses the HTTP header information from the stream
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*
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* @param in is the stream
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* @throws IOException
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*/
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public HttpHeaderParser(BufferedReader in) throws IOException{
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url_attr = new HashMap<String, String>();
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headers = new HashMap<String, String>();
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cookies = new HashMap<String, String>();
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String tmp = null;
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if( (tmp=in.readLine()) != null && !tmp.isEmpty() ){
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parseStatusLine( tmp );
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while( (tmp=in.readLine()) != null && !tmp.isEmpty() ){
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parseLine( tmp );
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}
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}
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parseCookies();
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}
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/**
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* Parses the HTTP header information from an String
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*
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* @param in is the string
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*/
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public HttpHeaderParser(String in){
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url_attr = new HashMap<String, String>();
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headers = new HashMap<String, String>();
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cookies = new HashMap<String, String>();
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Scanner sc = new Scanner(in);
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sc.useDelimiter("\n");
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String tmp = null;
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if( sc.hasNext() && !(tmp=sc.next()).isEmpty() ){
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parseStatusLine( tmp );
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while( sc.hasNext() && !(tmp=sc.next()).isEmpty() ){
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parseLine( tmp );
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}
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}
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sc.close();
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parseCookies();
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}
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/**
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* Parses the first header line and ads the values to
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* the map and returns the file name and path
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*
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* @param line The header String
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* @return The path and file name as a String
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*/
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protected void parseStatusLine(String line){
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// Server Response
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if( line.startsWith("HTTP/") ){
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version = Float.parseFloat( line.substring( 5 , 8) );
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httpCode = Integer.parseInt( line.substring( 9, 12 ));
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}
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// Client Request
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else{
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type = (line.substring(0, line.indexOf(" "))).trim();
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version = Float.parseFloat( line.substring(line.lastIndexOf("HTTP/")+5 , line.length()).trim() );
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line = (line.substring(type.length()+1, line.lastIndexOf("HTTP/"))).trim();
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// parse URL and attributes
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int index = line.indexOf('?');
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if(index > -1){
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url = line.substring(0, index );
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line = line.substring( index+1, line.length());
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parseURLParameters(line, url_attr);
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}
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else{
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url = line;
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}
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url = url.replaceAll("//", "/");
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}
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}
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/**
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* Parses a String with variables from a get or post
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* that was sent from a client and puts the data into a HashMap
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*
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* @param attributes is the String containing all the attributes
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*/
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public static HashMap<String, String> parseURLParameters( String attributes ){
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HashMap<String, String> map = new HashMap<String, String>();
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parseURLParameters(attributes, map);
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return map;
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}
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/**
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* Parses a String with variables from a get or post
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* that was sent from a client and puts the data into a HashMap
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*
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* @param attributes is the String containing all the attributes
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* @param map is the HashMap to put all the values into
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*/
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public static void parseURLParameters(String attributes, HashMap<String, String> map){
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String[] tmp;
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// get the variables
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String[] data = andPattern.split( attributes );
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for(String element : data){
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tmp = equalPattern.split(element, 2);
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map.put(
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tmp[0].trim(), // Key
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(tmp.length>1 ? tmp[1] : "").trim()); //Value
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}
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}
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/**
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* Parses the rest of the header
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*
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* @param line is the next line in the header
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*/
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protected void parseLine(String line){
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String[] data = colonPattern.split( line, 2 );
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headers.put(
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data[0].trim().toUpperCase(), // Key
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(data.length>1 ? data[1] : "").trim()); //Value
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}
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/**
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* Parses the attribute "Cookie" and returns a HashMap
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* with the values
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*
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* @return a HashMap with cookie values
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*/
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protected void parseCookies(){
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if( headers.containsKey("COOKIE") ){
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String[] tmp = semiColonPattern.split( headers.get("COOKIE") );
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String[] tmp2;
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for(String cookie : tmp){
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tmp2 = equalPattern.split(cookie, 2);
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cookies.put(
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tmp2[0].trim(), // Key
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(tmp2.length>1 ? tmp2[1] : "").trim()); //Value
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}
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}
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}
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/**
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* @return the HTTP message type( ex. GET,POST...)
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*/
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public String getRequestType(){
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return type;
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}
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/**
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* @return the HTTP version of this header
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*/
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public float getHTTPVersion(){
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return version;
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}
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/**
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* @return the HTTP Return Code from a Server
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*/
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public float getHTTPCode(){
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return httpCode;
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}
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/**
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* @return the URL that the client sent the server
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*/
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public String getRequestURL(){
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return url;
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}
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/**
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* Returns the URL attribute value of the given name.
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*
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* returns null if there is no such attribute
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*/
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public String getURLAttribute(String name){
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return url_attr.get( name );
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}
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/**
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* Returns the HTTP attribute value of the given name.
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*
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* returns null if there is no such attribute
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*/
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public String getHeader(String name){
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return headers.get( name.toUpperCase() );
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}
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/**
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* Returns the cookie value of the given name.
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*
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* returns null if there is no such attribute
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*/
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public String getCookie(String name){
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return cookies.get( name );
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}
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/**
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* @return a map of the parsed cookies
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*/
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public HashMap<String, String> getCookies(){
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return cookies;
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}
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/**
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* @return a map of the parsed URL attributes
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*/
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public HashMap<String, String> getURLAttributes(){
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return url_attr;
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}
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/**
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* @return a map of the parsed headers
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*/
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public HashMap<String, String> getHeaders(){
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return headers;
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}
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public String toString(){
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StringBuffer tmp = new StringBuffer();
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tmp.append("Type: ").append(type);
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tmp.append("\nHTTP Version: HTTP/").append(version);
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tmp.append("\nURL: ").append(url);
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for( String key : url_attr.keySet() ){
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tmp.append("\nURL Attr: ");
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tmp.append(key);
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tmp.append("=");
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tmp.append( url_attr.get(key) );
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}
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for( String key : headers.keySet() ){
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tmp.append("\nHeader: ");
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tmp.append(key);
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tmp.append("=");
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tmp.append( headers.get(key) );
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}
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for( String key : cookies.keySet() ){
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tmp.append("\nCookie: ");
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tmp.append(key);
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tmp.append("=");
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tmp.append( cookies.get(key) );
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}
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return tmp.toString();
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}
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}
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