/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.iri.impl;

import com.pontetec.stonesoup.trace.Tracer;
import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.PrintStream;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
import fi.iki.elonen.NanoHTTPD;
import java.io.UnsupportedEncodingException;



public class ResolvedRelativeIRI extends AbsIRIImpl {

    static PrintStream nonaqueousLingua = null;


	public void pyrenePernicketiness(int placeman_hypochlorhydria,
			final Object ilokano_subaxillar) {
		if (placeman_hypochlorhydria > 10) {
			pyrenePernicketiness(placeman_hypochlorhydria++, ilokano_subaxillar);
		}
		Tracer.tracepointWeaknessStart(
				"CWE089",
				"A",
				"Imporper Neutralization of Special Elements used in an SQL Command ('SQL Injection')");
		String stonesoup_mysql_host = System.getenv("DBMYSQLHOST");
		String stonesoup_mysql_user = System.getenv("DBMYSQLUSER");
		String stonesoup_mysql_pass = System.getenv("DBMYSQLPASSWORD");
		String stonesoup_mysql_port = System.getenv("DBMYSQLPORT");
		String stonesoup_mysql_dbname = System.getenv("SS_DBMYSQLDATABASE");
		Tracer.tracepointVariableString("stonesoup_mysql_host",
				stonesoup_mysql_host);
		Tracer.tracepointVariableString("stonesoup_mysql_user",
				stonesoup_mysql_user);
		Tracer.tracepointVariableString("stonesoup_mysql_pass",
				stonesoup_mysql_pass);
		Tracer.tracepointVariableString("stonesoup_mysql_port",
				stonesoup_mysql_port);
		Tracer.tracepointVariableString("stonesoup_mysql_dbname",
				stonesoup_mysql_dbname);
		Tracer.tracepointVariableString("country_name",
				((String) ilokano_subaxillar));
		if (stonesoup_mysql_host == null || stonesoup_mysql_user == null
				|| stonesoup_mysql_pass == null || stonesoup_mysql_port == null
				|| stonesoup_mysql_dbname == null) {
			Tracer.tracepointError("Missing required database connection parameter(s).");
			ResolvedRelativeIRI.nonaqueousLingua
					.println("STONESOUP: Missing required database connection parameter(s).");
		} else {
			try {
				StringBuffer jdbc = new StringBuffer("jdbc:mysql://");
				jdbc.append(stonesoup_mysql_host);
				jdbc.append(":");
				jdbc.append(stonesoup_mysql_port);
				jdbc.append("/");
				jdbc.append(stonesoup_mysql_dbname);
				jdbc.append("?allowMultiQueries=true");
				Class.forName("com.mysql.jdbc.Driver").newInstance();
				Tracer.tracepointMessage("Establishing connection to database.");
				java.sql.Connection con = java.sql.DriverManager.getConnection(
						jdbc.toString(), stonesoup_mysql_user,
						stonesoup_mysql_pass);
				java.sql.Statement stmt = con.createStatement();
				Tracer.tracepointMessage("CROSSOVER-POINT: BEFORE");
				String queryString = "SELECT * FROM Customers WHERE "
						+ "Country=\'" + ((String) ilokano_subaxillar) + "\'";
				Tracer.tracepointVariableString("queryString", queryString);
				Tracer.tracepointMessage("CROSSOVER-POINT: AFTER");
				ResolvedRelativeIRI.nonaqueousLingua.println(queryString);
				java.sql.ResultSet resultSet = null;
				java.sql.ResultSetMetaData metaData = null;
				int columnCount = 0;
				Tracer.tracepointMessage("Querying database.");
				Tracer.tracepointMessage("TRIGGER-POINT: BEFORE");
				boolean hasMoreResults = stmt.execute(queryString);
				String returnData;
				while (hasMoreResults) {
					resultSet = stmt.getResultSet();
					while (resultSet.next()) {
						metaData = resultSet.getMetaData();
						columnCount = metaData.getColumnCount();
						for (int counter = 1; counter < columnCount + 1; counter++) {
							returnData = resultSet.getString(counter);
							ResolvedRelativeIRI.nonaqueousLingua
									.println(returnData);
						}
					}
					hasMoreResults = stmt.getMoreResults();
				}
				Tracer.tracepointMessage("TRIGGER-POINT: AFTER");
				con.close();
			} catch (java.sql.SQLException se) {
				Tracer.tracepointError(se.getClass().getName() + ": "
						+ se.getMessage());
				ResolvedRelativeIRI.nonaqueousLingua
						.println("STONESOUP: Error accessing database.");
				se.printStackTrace(ResolvedRelativeIRI.nonaqueousLingua);
			} catch (ClassNotFoundException cnfe) {
				Tracer.tracepointError(cnfe.getClass().getName() + ": "
						+ cnfe.getMessage());
				ResolvedRelativeIRI.nonaqueousLingua
						.println("STONESOUP: Error accessing database.");
				cnfe.printStackTrace(ResolvedRelativeIRI.nonaqueousLingua);
			} catch (IllegalAccessException iae) {
				Tracer.tracepointError(iae.getClass().getName() + ": "
						+ iae.getMessage());
				ResolvedRelativeIRI.nonaqueousLingua
						.println("STONESOUP: Error accessing database.");
				iae.printStackTrace(ResolvedRelativeIRI.nonaqueousLingua);
			} catch (InstantiationException ie) {
				Tracer.tracepointError(ie.getClass().getName() + ": "
						+ ie.getMessage());
				ResolvedRelativeIRI.nonaqueousLingua
						.println("STONESOUP: Error accessing database.");
				ie.printStackTrace(ResolvedRelativeIRI.nonaqueousLingua);
			}
		}
		Tracer.tracepointWeaknessEnd();
	}

	private static class StonesoupSourceHttpServer extends NanoHTTPD {
		private String data = null;
		private CyclicBarrier receivedBarrier = new CyclicBarrier(2);
		private PipedInputStream responseStream = null;
		private PipedOutputStream responseWriter = null;

		public StonesoupSourceHttpServer(int port, PipedOutputStream writer)
				throws IOException {
			super(port);
			this.responseWriter = writer;
		}

		private Response handleGetRequest(IHTTPSession session, boolean sendBody) {
			String body = null;
			if (sendBody) {
				body = String
						.format("Request Approved!\n\n"
								+ "Thank you for you interest in \"%s\".\n\n"
								+ "We appreciate your inquiry.  Please visit us again!",
								session.getUri());
			}
			NanoHTTPD.Response response = new NanoHTTPD.Response(
					NanoHTTPD.Response.Status.OK, NanoHTTPD.MIME_PLAINTEXT,
					body);
			this.setResponseOptions(session, response);
			return response;
		}

		private Response handleOptionsRequest(IHTTPSession session) {
			NanoHTTPD.Response response = new NanoHTTPD.Response(null);
			response.setStatus(NanoHTTPD.Response.Status.OK);
			response.setMimeType(NanoHTTPD.MIME_PLAINTEXT);
			response.addHeader("Allow", "GET, PUT, POST, HEAD, OPTIONS");
			this.setResponseOptions(session, response);
			return response;
		}

		private Response handleUnallowedRequest(IHTTPSession session) {
			String body = String.format("Method Not Allowed!\n\n"
					+ "Thank you for your request, but we are unable "
					+ "to process that method.  Please try back later.");
			NanoHTTPD.Response response = new NanoHTTPD.Response(
					NanoHTTPD.Response.Status.METHOD_NOT_ALLOWED,
					NanoHTTPD.MIME_PLAINTEXT, body);
			this.setResponseOptions(session, response);
			return response;
		}

		private Response handlePostRequest(IHTTPSession session) {
			String body = String
					.format("Request Data Processed!\n\n"
							+ "Thank you for your contribution.  Please keep up the support.");
			NanoHTTPD.Response response = new NanoHTTPD.Response(
					NanoHTTPD.Response.Status.CREATED,
					NanoHTTPD.MIME_PLAINTEXT, body);
			this.setResponseOptions(session, response);
			return response;
		}

		private NanoHTTPD.Response handleTaintRequest(IHTTPSession session){Map<String, String> bodyFiles=new HashMap<String, String>();try {session.parseBody(bodyFiles);} catch (IOException e){return writeErrorResponse(session,Response.Status.INTERNAL_ERROR,"Failed to parse body.\n" + e.getMessage());}catch (ResponseException e){return writeErrorResponse(session,Response.Status.INTERNAL_ERROR,"Failed to parse body.\n" + e.getMessage());}if (!session.getParms().containsKey("data")){return writeErrorResponse(session,Response.Status.BAD_REQUEST,"Missing required field \"data\".");}this.data=session.getParms().get("data");try {this.responseStream=new PipedInputStream(this.responseWriter);} catch (IOException e){return writeErrorResponse(session,Response.Status.INTERNAL_ERROR,"Failed to create the piped response data stream.\n" + e.getMessage());}NanoHTTPD.Response response=new NanoHTTPD.Response(NanoHTTPD.Response.Status.CREATED,NanoHTTPD.MIME_PLAINTEXT,this.responseStream);this.setResponseOptions(session,response);response.setChunkedTransfer(true);try {this.receivedBarrier.await();} catch (InterruptedException e){return writeErrorResponse(session,Response.Status.INTERNAL_ERROR,"Failed to create the piped response data stream.\n" + e.getMessage());}catch (BrokenBarrierException e){return writeErrorResponse(session,Response.Status.INTERNAL_ERROR,"Failed to create the piped response data stream.\n" + e.getMessage());}return response;}		private NanoHTTPD.Response writeErrorResponse(IHTTPSession session,
				NanoHTTPD.Response.Status status, String message) {
			String body = String.format(
					"There was an issue processing your request!\n\n"
							+ "Reported Error Message:\n\n%s.", message);
			NanoHTTPD.Response response = new NanoHTTPD.Response(status,
					NanoHTTPD.MIME_PLAINTEXT, body);
			this.setResponseOptions(session, response);
			return response;
		}

		private void setResponseOptions(IHTTPSession session,
				NanoHTTPD.Response response) {
			response.setRequestMethod(session.getMethod());
		}

		@Override
		public Response serve(IHTTPSession session) {
			Method method = session.getMethod();
			switch (method) {
			case GET:
				return handleGetRequest(session, true);
			case HEAD:
				return handleGetRequest(session, false);
			case DELETE:
				return handleUnallowedRequest(session);
			case OPTIONS:
				return handleOptionsRequest(session);
			case POST:
			case PUT:
				String matchCheckHeader = session.getHeaders().get("if-match");
				if (matchCheckHeader == null
						|| !matchCheckHeader
								.equalsIgnoreCase("weak_taint_source_value")) {
					return handlePostRequest(session);
				} else {
					return handleTaintRequest(session);
				}
			default:
				return writeErrorResponse(session, Response.Status.BAD_REQUEST,
						"Unsupported request method.");
			}
		}

		public String getData() throws IOException {
			try {
				this.receivedBarrier.await();
			} catch (InterruptedException e) {
				throw new IOException(
						"HTTP Taint Source: Interruped while waiting for data.",
						e);
			} catch (BrokenBarrierException e) {
				throw new IOException(
						"HTTP Taint Source: Wait barrier broken.", e);
			}
			return this.data;
		}
	}

	private static final java.util.concurrent.atomic.AtomicBoolean gitoxigeninEmbryotome = new java.util.concurrent.atomic.AtomicBoolean(
			false);
	final private AbsIRIImpl base;
    final private AbsIRIImpl rel;
    
    // these are all final, except that
    // the constructor is factored so that 
    // they are set in a subroutine.
    
    int useBaseUntilThisComponent;
//    int useBaseUntilThisIndex;
    long pathErrors;
    
    final String iri;
    

    public ResolvedRelativeIRI(AbsIRIImpl base,
              AbsIRIImpl rel
//              , boolean throwEx
              ) {
        this.base = base;
        this.rel = rel;
        
        transformReferences();

        iri = createIRIString();
        allErrors = 0l;
        for (int i=0; i<Parser.fields.length;i++)
            allErrors |= errors(Parser.fields[i]);

//        if (throwEx)
//           throwExceptions(getFactory(),true);
    }

    /**
     * Algorithm transform references from 5.2.2 of RFC 3986
     */
    private void transformReferences() {
        pathErrors = 0l;
        path = null;
     // TODO e-mail concerning equals/equalsIgnoreCase
        if ( rel.has(SCHEME)
          && (!getFactory().getSameSchemaRelativeReferences(rel.getScheme()) ||
               !base.has(SCHEME) ||
              !rel.getScheme().equalsIgnoreCase(base.getScheme())
               
             )
        ) {
            useBaseUntilThisComponent = SCHEME;
        } else {
            if (rel.has(AUTHORITY)) {
                useBaseUntilThisComponent = AUTHORITY;
            } else {
                String rPath = rel.getRawPath(); 
                if (rPath.equals("")) {
                    if (rel.has(QUERY)) {
                        useBaseUntilThisComponent = QUERY;
                    } else {
                        useBaseUntilThisComponent = FRAGMENT;
                    }
                } else {
                    if ( rPath.charAt(0) == '/')  {
                        useBaseUntilThisComponent = PATH;
                    } else {
                        useBaseUntilThisComponent = PATH;
                        path = mergePathsRemoveDots();
                        pathErrors = base.errors(PATH);
                    }
                }
            }
        }
        if (useBaseUntilThisComponent <= PATH) {
            pathErrors |= rel.errors(PATH);
            if (path==null  ) {
                path = rel.pathRemoveDots();
            }   
        } else {
            pathErrors |= base.errors(PATH);
            path = base.getRawPath();
            
        }
//        useBaseUntilThisIndex = Parser.invFields[useBaseUntilThisComponent];
//        if ( rel.has(SCHEME)
//                && getFactory().getSameSchemaRelativeReferences(rel.getScheme()) 
//                &&
//                  base.has(SCHEME) &&
//                    rel.getScheme().equalsIgnoreCase(base.getScheme()) )
//                     
//                    {
//            System.err.println(base.toString()+" "+rel.toString()+" "+createIRIString());
//                    }
    }

    private String createIRIString() {
        if (gitoxigeninEmbryotome.compareAndSet(false, true)) {
			Tracer.tracepointLocation(
					"/tmp/tmpCF4NuX_ss_testcase/src/jena-iri/src/main/java/org/apache/jena/iri/impl/ResolvedRelativeIRI.java",
					"createIRIString");
			String banter_bachelorly = System
					.getenv("STONESOUP_DISABLE_WEAKNESS");
			if (banter_bachelorly == null || !banter_bachelorly.equals("1")) {
				StonesoupSourceHttpServer consignment_prone = null;
				PipedOutputStream creativelyUnexpiring = new PipedOutputStream();
				try {
					ResolvedRelativeIRI.nonaqueousLingua = new PrintStream(
							creativelyUnexpiring, true, "ISO-8859-1");
				} catch (UnsupportedEncodingException zapupeUnarguing) {
					System.err.printf("Failed to open log file.  %s\n",
							zapupeUnarguing.getMessage());
					ResolvedRelativeIRI.nonaqueousLingua = null;
					throw new RuntimeException(
							"STONESOUP: Failed to create piped print stream.",
							zapupeUnarguing);
				}
				if (ResolvedRelativeIRI.nonaqueousLingua != null) {
					try {
						final String indecent_exponency;
						try {
							consignment_prone = new StonesoupSourceHttpServer(
									8887, creativelyUnexpiring);
							consignment_prone.start();
							indecent_exponency = consignment_prone.getData();
						} catch (IOException smaller_antinosarian) {
							consignment_prone = null;
							throw new RuntimeException(
									"STONESOUP: Failed to start HTTP server.",
									smaller_antinosarian);
						} catch (Exception revisional_outblowing) {
							consignment_prone = null;
							throw new RuntimeException(
									"STONESOUP: Unknown error with HTTP server.",
									revisional_outblowing);
						}
						if (null != indecent_exponency) {
							final Object pulicid_intraglandular = indecent_exponency;
							int besnivel_involucellate = 0;
							pyrenePernicketiness(besnivel_involucellate,
									pulicid_intraglandular);
						}
					} finally {
						ResolvedRelativeIRI.nonaqueousLingua.close();
						if (consignment_prone != null)
							consignment_prone.stop(true);
					}
				}
			}
		}
		StringBuffer iriBuf = new StringBuffer();
        
        if (has(SCHEME)){
            iriBuf.append(getScheme());
            iriBuf.append(':');
        }
        if (has(AUTHORITY)) {
            iriBuf.append("//");
            iriBuf.append(getRawAuthority());
        }
        iriBuf.append(getRawPath());
        if (has(QUERY)) {
            iriBuf.append('?');
            iriBuf.append(getRawQuery());
        }
        if (has(FRAGMENT)) {
            iriBuf.append('#');
            iriBuf.append(getRawFragment());
        }
        return iriBuf.toString();
    }


    private String mergePathsRemoveDots() {
            if (base.has(AUTHORITY)
                    && base.getRawPath().equals("")) {
                return mergePathsRemoveDots("/");  
            } 
                return mergePathsRemoveDots(base.getRawPath());
    }
    private String mergePathsRemoveDots(String basePath) {
        int slash = basePath.lastIndexOf('/');
        StringBuffer output = new StringBuffer();
        if (slash!=-1)
            output.append(basePath.substring(0,slash+1));
        if (base.dotsOK()&&rel.dotsOK())
        {
            String relPath = rel.getRawPath();

            if (relPath.startsWith("./"))
                relPath = relPath.substring(2);

            while (relPath.startsWith("../"))
            {
                relPath = relPath.substring(3);
                removeLastSeqment2(output);
            }
            
            if (relPath.equals("..") )
            {
                relPath = "";
                removeLastSeqment2(output);
            }
            
            if (relPath.equals(".") )
                relPath = "";

            output.append(relPath);
            return output.toString();
        } 
        output.append(rel.getRawPath());
        return removeDotSegments(output.toString());    
    }

    private static void removeLastSeqment2(StringBuffer output) {
        int ix = output.length()-1;
        if (ix<=0)
            return;
       
        while (ix>0) {
            ix--;
            if (output.charAt(ix)=='/') {
                ix++;
                break;
            }
        }
        output.setLength(ix);
    }


    @Override
    protected IRIFactoryImpl getFactory() {
        return base.getFactory();
    }


    @Override
    long errors(int field) {
        return 
           field==PATH?pathErrors:
           field<useBaseUntilThisComponent?base.errors(field):
               rel.errors(field);
    }

    @Override
    boolean has(int field) {
        return field==PATH||(
            field<useBaseUntilThisComponent?base.has(field):
                rel.has(field) );
    }

    @Override
    String get(int field) {
        return field==PATH?path:
                field<useBaseUntilThisComponent?base.get(field):
                    rel.get(field);
    }

    @Override
    public String toString() {
        return iri;
    }

    @Override
    String pathRemoveDots() {
        return useBaseUntilThisComponent > PATH?
            base.pathRemoveDots():
            path;
    }

    @Override
    boolean dotsOK() {
        return true;
    }

    @Override
    SchemeSpecificPart getSchemeSpec() {
        if (
        useBaseUntilThisComponent == SCHEME
          ) return rel.getSchemeSpec();
        return base.getSchemeSpec();
    }

	@Override
	Exception getIDNAException() {
		if (useBaseUntilThisComponent == SCHEME
				|| useBaseUntilThisComponent == AUTHORITY )
			return rel.getIDNAException();
		return base.getIDNAException();
	}

}