Initial implementation of digest auth page

src/zutil/net/http/HttpHeader.java

@@ -45,7 +45,7 @@ public class HttpHeader {
 	private HashMap<String, String> cookies;
 
 
-    protected HttpHeader(){
+    public HttpHeader(){
         urlAttributes = new HashMap<String, String>();
         headers = new HashMap<String, String>();
         cookies = new HashMap<String, String>();

src/zutil/net/http/HttpHeaderParser.java

@@ -31,6 +31,7 @@ import zutil.parser.URLDecoder;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.List;
 import java.util.Map;
 import java.util.regex.Pattern;
 
@@ -106,7 +107,7 @@ public class HttpHeaderParser {
 		if( statusLine.startsWith("HTTP/") ){
 			header.setIsRequest(false);
 			header.setHTTPVersion( Float.parseFloat( statusLine.substring( 5 , 8)));
-			header.setHTTPCode( Integer.parseInt( statusLine.substring( 9, 12 )));
+			header.setHTTPCode( Integer.parseInt( statusLine.substring( 9, statusLine.indexOf(' ', 9) )));
 		}
 		// Client Request
 		else if(statusLine.contains("HTTP/")){
@@ -163,12 +164,12 @@ public class HttpHeaderParser {
      */
     public static void parseHeaderValues(Map<String,String> map, String headerValue, String delimiter){
         if(headerValue != null && !headerValue.isEmpty()){
-            String[] tmp = headerValue.split(delimiter);
-            for(String cookie : tmp){
-                String[] tmp2 = PATTERN_EQUAL.split(cookie, 2);
+            String[] tmpArr = headerValue.split(delimiter);
+            for(String cookie : tmpArr){
+                String[] tmpStr = PATTERN_EQUAL.split(cookie, 2);
                 map.put(
-                        tmp2[0].trim(), 							// Key
-                        StringUtil.trim((tmp2.length>1 ? tmp2[1] : "").trim(), '\"')); 	//Value
+                        tmpStr[0].trim(), 							// Key
+                        StringUtil.trim((tmpStr.length>1 ? tmpStr[1] : "").trim(), '\"')); 	//Value
             }
         }
     }

src/zutil/net/http/HttpPrintStream.java

@@ -86,7 +86,7 @@ public class HttpPrintStream extends OutputStream{
 		this.out = new PrintStream(out);
         this.httpVersion = "1.1";
 		this.message_type = type;
-		this.res_status_code = 0;
+		this.res_status_code = 200;
 		this.headers = new HashMap<String, String>();
 		this.cookies = new HashMap<String, String>();
 		this.buffer = new StringBuffer();

src/zutil/net/http/page/HttpDigestAuthPage.java

@@ -0,0 +1,63 @@
+package zutil.net.http.page;
+
+import zutil.net.http.HttpHeader;
+import zutil.net.http.HttpPage;
+import zutil.net.http.HttpPrintStream;
+
+import java.io.IOException;
+import java.util.Map;
+
+/**
+ * A abstract page that requires HTTP Digest authentication
+ * to access the subclass HttpPage.
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc2617">rfc2617</a>
+ * @author Ziver
+ */
+public abstract class HttpDigestAuthPage implements HttpPage{
+    private static final String HTTP_AUTH_HEADER = "WWW-Authenticate";
+    private static final String AUTH_TYPE = "Digest";
+
+    private static final String AUTH_REALM = "realm";
+    private static final String AUTH_QUALITY_OF_PROTECTION = "qop";
+    private static final String AUTH_NONCE = "nonce";
+    private static final String AUTH_OPAQUE = "opaque";
+
+    private static final String AUTH_USERNAME = "username";
+    private static final String AUTH_URI = "uri";
+    private static final String AUTH_CNONCE = "cnonce";
+    private static final String AUTH_RESPONSE = "response";
+
+
+    private String realm;
+
+
+    @Override
+    public final void respond(HttpPrintStream out,
+                        HttpHeader headers,
+                        Map<String, Object> session,
+                        Map<String, String> cookie,
+                        Map<String, String> request) throws IOException {
+
+        out.setStatusCode(401);
+        out.setHeader(HTTP_AUTH_HEADER, generateAuthHeader());
+    }
+
+    private String generateAuthHeader(){
+        StringBuilder str = new StringBuilder();
+        str.append(AUTH_TYPE).append(' ');
+        str.append(AUTH_REALM).append("=\"").append("ll").append("\", ");
+        str.append(AUTH_QUALITY_OF_PROTECTION).append("=\"").append("ll").append("\", ");
+        str.append(AUTH_NONCE).append("=\"").append("ll").append("\", ");
+        str.append(AUTH_OPAQUE).append("=\"").append("ll").append("\"");
+        return str.toString();
+    }
+
+
+
+    public abstract void authRespond(HttpPrintStream out,
+                              HttpHeader headers,
+                              Map<String, Object> session,
+                              Map<String, String> cookie,
+                              Map<String, String> request) throws IOException;
+}

test/zutil/net/http/page/HttpDigestAuthPageTest.java

@@ -0,0 +1,73 @@
+package zutil.net.http.page;
+
+import org.junit.Test;
+import zutil.io.StringOutputStream;
+import zutil.net.http.HttpHeader;
+import zutil.net.http.HttpHeaderParser;
+import zutil.net.http.HttpPrintStream;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Ziver on 2016-10-26.
+ */
+public class HttpDigestAuthPageTest {
+    private static final String PAGE_CONTENT = "Hello World!";
+
+    @Test
+    public void cleanRequest() throws IOException {
+        HttpHeader header = new HttpHeader();
+        HttpHeader output = makeRequest(header);
+
+        assertEquals(401, output.getHTTPCode());
+        assertTrue(output.getHeader("WWW-Authenticate") != null);
+        assertEquals("Digest", parseAuthType(output));
+        Map<String,String> authHeader = parseAuthHeader(output);
+        assertTrue(authHeader.containsKey("realm"));
+        assertTrue(authHeader.containsKey("qop"));
+        assertTrue(authHeader.containsKey("nonce"));
+        assertTrue(authHeader.containsKey("opaque"));
+    }
+
+
+
+
+
+    public static HttpHeader makeRequest(HttpHeader headers) throws IOException {
+        StringOutputStream buff = new StringOutputStream();
+        HttpPrintStream out = new HttpPrintStream(buff);
+        new HttpDigestTestPage().respond(
+                out, headers, new HashMap(), new HashMap(), new HashMap());
+        out.flush();
+        HttpHeaderParser parser = new HttpHeaderParser(buff.toString());
+        return parser.read();
+    }
+
+    public static String parseAuthType(HttpHeader headers){
+        String tmp = headers.getHeader("WWW-Authenticate");
+        return tmp.substring(0, tmp.indexOf(' '));
+    }
+    public static HashMap<String,String> parseAuthHeader(HttpHeader headers){
+        HashMap<String,String> authHeaders = new HashMap<>();
+        String tmp = headers.getHeader("WWW-Authenticate");
+        HttpHeaderParser.parseHeaderValues(authHeaders,
+                tmp.substring(tmp.indexOf(' ')+1),
+                ",");
+        return authHeaders;
+    }
+
+    private static class HttpDigestTestPage extends HttpDigestAuthPage{
+        @Override
+        public void authRespond(HttpPrintStream out,
+                                HttpHeader headers,
+                                Map<String, Object> session,
+                                Map<String, String> cookie,
+                                Map<String, String> request) throws IOException {
+            out.print(PAGE_CONTENT);
+        }
+    }
+}