/*
* enables the http server to listen on ip_address and port.
* each new client receives a thread to work with. After allocating a thread for the new connection the server goes
* back to listening on ip_address and port
*/
public void listen()
{
listener = new TcpListener(ip_address, port); //creates a tcp accept socket
listener.Start();
while (is_active)
{
TcpClient client_socket = listener.AcceptTcpClient();
HttpProcessor processor = new HttpProcessor(client_socket, this);
Thread thread = new Thread(new ThreadStart(processor.process));
thread.Start();
Thread.Sleep(1);
}
}
public override string handleGETRequest(HttpProcessor p)
{
string full_get_url = p.http_url; //http://localhost/requests?function=getforums --> /requests?function=getforums
int q_mark_loca = full_get_url.IndexOf('?'); //9
string get_url = full_get_url.Substring(q_mark_loca, full_get_url.Length - q_mark_loca); //function=getforums
get_url.ToLower(); //verifying everything is in lowercase
XmlHandler xparser = new XmlHandler();
//case variables
string[] get_params = get_url.Split('&');
string[] function_param = get_params[0].Split('=');
string[] get_forum_id; //forumid=123
string[] get_subforum_id; //subforumid=456
string[] get_discussion_id; //discussionid=789
int discussion_id;
int subforum_id;
int forum_id;
string xml_string;
switch (function_param[1])
{
case "getforums":
Tuple<bool, string, string[], string[,]> getforums_result = _forum_gen.getForums();
xml_string = xparser.writeXML("getforums", getforums_result.Item2, getforums_result.Item3, getforums_result.Item4);
break;
case "getsubforums":
if (get_params.Length != 2)
{
Console.WriteLine("error with getsubforums - wrong number of params");
return "error get forums";
}
get_forum_id = get_params[1].Split('=');
forum_id = Convert.ToInt32(get_forum_id[1]);
Tuple<bool, string, string[], string[,]> getsubforums_result = _forum_gen.getSubForums(forum_id);
xml_string = xparser.writeXML("getsubforums", getsubforums_result.Item2, getsubforums_result.Item3, getsubforums_result.Item4);
break;
case "getdiscussions":
if (get_params.Length != 3)
{
Console.WriteLine("error with getdiscussions - wrong number of params");
return "error get discussions";
}
get_forum_id = get_params[1].Split('=');
get_subforum_id = get_params[2].Split('=');
forum_id = Convert.ToInt32(get_forum_id[1]);
subforum_id = Convert.ToInt32(get_subforum_id[1]);
Tuple<bool, string, string[], string[,]> getdiscussions_result = _forum_gen.getDiscussions(forum_id, subforum_id);
xml_string = xparser.writeXML("getdiscussions", getdiscussions_result.Item2, getdiscussions_result.Item3, getdiscussions_result.Item4);
break;
case "getcomments":
if (get_params.Length != 4)
{
Console.WriteLine("error with getcomments - wrong number of params");
return "error get comments";
}
get_forum_id = get_params[1].Split('=');
get_subforum_id = get_params[2].Split('=');
get_discussion_id = get_params[3].Split('=');
forum_id = Convert.ToInt32(get_forum_id[1]);
subforum_id = Convert.ToInt32(get_subforum_id[1]);
discussion_id = Convert.ToInt32(get_discussion_id[1]);
Tuple<bool, string, string[], string[,]> getcomments_result = _forum_gen.getComments(forum_id, subforum_id, discussion_id);
xml_string = xparser.writeXML("getcomments", getcomments_result.Item2, getcomments_result.Item3, getcomments_result.Item4);
break;
case "getusers":
if (get_params.Length != 2)
{
Console.WriteLine("error with getcomments - wrong number of params");
return "error get users";
}
get_forum_id = get_params[1].Split('=');
forum_id = Convert.ToInt32(get_forum_id[1]);
Tuple<bool, string, string[], string[,]> getusers_result = _forum_gen.getUsers(forum_id);
xml_string = xparser.writeXML("getusers", getusers_result.Item2, getusers_result.Item3, getusers_result.Item4);
break;
default:
Console.WriteLine("error with get - unrecognized method");
xml_string = "error general";
break;
}
//xml_string now contains xml_response to client
return xml_string;
}
/*
* sends a http POST request/response to the given URI and attaches the xml_string if exists
* returns 0 on success or -1 on failure
*/
public int sendPostRequest(HttpProcessor p,string uri, string xml_string)
{
if (uri == null || xml_string == null)
return -1;
HttpWebRequest post_request = (HttpWebRequest)WebRequest.Create(uri);
post_request.Method = "POST";
post_request.ContentType = "text/xml";
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] xml_data = Encoding.ASCII.GetBytes(xml_string);
post_request.ContentLength = xml_data.Length;
Stream requestStream = post_request.GetRequestStream();
requestStream.Write(xml_data, 0, xml_data.Length);
return 0;
}
public override string handlePOSTRequest(HttpProcessor p, StreamReader inputData)
{
Console.WriteLine("POST request: {0}", p.http_url);
string xml_data = inputData.ReadToEnd(); //xml_data now contains XML from application
XmlHandler xparser = new XmlHandler();
Tuple<String, LinkedList<String>> parsed_info = xparser.getXmlParse(xml_data); //parsed_info contains method name and values of args
string method_name = parsed_info.Item1;
LinkedList<string> args_list = parsed_info.Item2;
//switch declarations
int forum_id = 0;
int sub_forum_id = 0;
LinkedList<Tuple<string, string>> xarguments_list = new LinkedList<Tuple<string, string>>();
string username = null;
string password = null;
Tuple<string, string> succ_tuple = new Tuple<string, string>("", "");
Tuple<string, string> msg_tuple = new Tuple<string, string>("", "");
string response_xml = null;
method_name.ToLower();
switch (method_name)
{
case "login":
forum_id = Convert.ToInt32(args_list.ElementAt(0));
username = args_list.ElementAt(1);
password = args_list.ElementAt(2);
Tuple<string, string> login_success_usertype = _forum_gen.login(forum_id, username, password);
succ_tuple = new Tuple<string,string>("success", login_success_usertype.Item1);
if (login_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", login_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", login_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "logout":
forum_id = Convert.ToInt32(args_list.ElementAt(0));
int user_id = Convert.ToInt32(args_list.ElementAt(1));
Tuple<string, string> logout_success_usertype = _forum_gen.logout(forum_id, user_id);
succ_tuple = new Tuple<string, string>("success", logout_success_usertype.Item1);
if (logout_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", logout_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", logout_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "adminlogin":
username = args_list.ElementAt(0);
password = args_list.ElementAt(1);
Tuple<string, string> admin_login_success_usertype = _forum_gen.adminLogin(username, password);
succ_tuple = new Tuple<string, string>("success", admin_login_success_usertype.Item1);
if (admin_login_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", admin_login_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", admin_login_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "adminlogout":
Tuple<string, string> admin_logout_success_usertype = _forum_gen.adminLogout();
succ_tuple = new Tuple<string, string>("success", admin_logout_success_usertype.Item1);
if (admin_logout_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", admin_logout_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", admin_logout_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "register":
forum_id = Convert.ToInt32(args_list.ElementAt(0));
username = args_list.ElementAt(1);
password = args_list.ElementAt(2);
string email = args_list.ElementAt(3);
string signature = args_list.ElementAt(4);
Tuple<string, string> register_success_usertype = _forum_gen.register(forum_id, username, password, email, signature);
succ_tuple = new Tuple<string,string>("success", register_success_usertype.Item1);
if (register_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", register_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", register_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "createnewforum":
username = args_list.ElementAt(0);
password = args_list.ElementAt(1);
string forum_name = args_list.ElementAt(2);
string admin_username = args_list.ElementAt(3);
string admin_password = args_list.ElementAt(4);
Tuple<string, string> createnewforum_success_usertype = _forum_gen.createNewForum(username, password, forum_name, admin_username, admin_password);
succ_tuple = new Tuple<string, string>("success", createnewforum_success_usertype.Item1);
if (createnewforum_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", createnewforum_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", createnewforum_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "createnewsubforum":
username = args_list.ElementAt(0);
password = args_list.ElementAt(1);
forum_id = Convert.ToInt32(args_list.ElementAt(2));
string sub_forum_title = args_list.ElementAt(3);
Tuple<string, string> createnewsubforum_success_usertype = _forum_gen.createNewSubForum(username, password, forum_id, sub_forum_title);
succ_tuple = new Tuple<string, string>("success", createnewsubforum_success_usertype.Item1);
if (createnewsubforum_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", createnewsubforum_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", createnewsubforum_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "createnewdiscussion":
username = args_list.ElementAt(0);
password = args_list.ElementAt(1);
forum_id = Convert.ToInt32(args_list.ElementAt(2));
sub_forum_id = Convert.ToInt32(args_list.ElementAt(3));
string discussion_title = args_list.ElementAt(4);
string discussion_content = args_list.ElementAt(5);
Tuple<string, string> createnewdiscussion_success_usertype = _forum_gen.createNewDiscussion(username, password, forum_id, sub_forum_id, discussion_title, discussion_content);
succ_tuple = new Tuple<string, string>("success", createnewdiscussion_success_usertype.Item1);
if (createnewdiscussion_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", createnewdiscussion_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", createnewdiscussion_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
case "createnewcomment":
username = args_list.ElementAt(0);
password = args_list.ElementAt(1);
forum_id = Convert.ToInt32(args_list.ElementAt(2));
sub_forum_id = Convert.ToInt32(args_list.ElementAt(3));
int discussion_id = Convert.ToInt32(args_list.ElementAt(4));
string comment_content = args_list.ElementAt(5);
Tuple<string, string> createnewcomment_success_usertype = _forum_gen.createNewComment(username, password, forum_id, sub_forum_id, discussion_id, comment_content);
succ_tuple = new Tuple<string, string>("success", createnewcomment_success_usertype.Item1);
if (createnewcomment_success_usertype.Item1 == "1")
msg_tuple = new Tuple<string, string>("UserType", createnewcomment_success_usertype.Item2); //success on login
else
msg_tuple = new Tuple<string, string>("ErrorMsg", createnewcomment_success_usertype.Item2); //failure on login
xarguments_list.AddLast(succ_tuple);
xarguments_list.AddLast(msg_tuple);
response_xml = xparser.cCreateXml(method_name, xarguments_list);
break;
default:
break;
}
return response_xml;
}
public abstract string handlePOSTRequest(HttpProcessor p, StreamReader inputData);
public abstract string handleGETRequest(HttpProcessor p);