public string Create(string senderReceptor, string textMessage, HttpPostedFileBase file)
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri("http://localhost:53273/api/Texts");
if (textMessage.Equals(string.Empty) && file == null)
{
return("No puede enviar mensajes vacios");
}
if (textMessage != string.Empty)
{
var cipher = new SDES();
var getUser = new UsersLogic();
var receptor = senderReceptor.Split('|');
var a = getUser.getUserByUsername(receptor[1]).PrivateKey;
var receptorKey = (Math.Pow(g, a) % p);
var key = BigInteger.ModPow((int)receptorKey, UserPrivateKey, p);
var cipherKey = Convert.ToString(((int)key), 2);
textMessage = cipher.CipherText(textMessage, cipherKey);
}
else
{
textMessage = string.Empty;
}
var compressFile = new CompresssDecompressActions();
var message = new MessageModel()
{
SenderReceptor = senderReceptor,
Message = textMessage,
UploadedFile = file != null?compressFile.generateCharactersList(file) : "",
PublicKey = (int)(Math.Pow(g, UserPrivateKey) % p)
};
var postTask = client.PostAsJsonAsync("Messages", message);
postTask.Wait();
var result = postTask.Result;
if (result.IsSuccessStatusCode)
{
return("200");
}
else
{
if ((int)result.StatusCode >= 400 && (int)result.StatusCode < 500)
{
return(result.StatusCode.ToString() + ". Revise los datos ingresados :D");
}
else
{
return(result.StatusCode.ToString() + ". Contacte a un desarrollador del sistema D:");
}
}
}
}
public List <MessageModel> getMessages(string SenderReceptor)
{
using (var client = new HttpClient())
{
var searchedMessages = getAllUserMessages(SenderReceptor);
if (searchedMessages.GetType().ToString() == "System.String")
{
return(null);
}
var decipheredMessages = new List <MessageModel>();
var decipherMessage = new SDES();
var decompressFileMessage = new CompresssDecompressActions();
var getUser = new UsersLogic();
var receptor = SenderReceptor.Split('|');
if (receptor[1] == string.Empty)
{
return(searchedMessages);
}
if (receptor[0] == LoggedUser)
{//es un mensaje que yo envié
var a = getUser.getUserByUsername(receptor[1]).PrivateKey;
foreach (var message in searchedMessages)
{
var key = BigInteger.ModPow((int)message.PublicKey, a, p);
var commonKey = Convert.ToString((int)key, 2);
message.Message = message.Message != string.Empty ? decipherMessage.DecipherText(message.Message, commonKey) : string.Empty;
decipheredMessages.Add(message);
}
}
else
{//es un mensaje recibido
foreach (var message in searchedMessages)
{
var key = BigInteger.ModPow((int)message.PublicKey, UserPrivateKey, p);
var commonKey = Convert.ToString((int)key, 2);
message.Message = message.Message != string.Empty ? decipherMessage.DecipherText(message.Message, commonKey) : string.Empty;
decipheredMessages.Add(message);
}
}
return(searchedMessages);
}
}
public List <MessageModel> MessageThatContainsSearch(string valueToLookFor)
{
var loggedUser = LoggedUser;
var messagesThatContains = getAllUserMessages(loggedUser);
if (messagesThatContains.GetType().ToString() == "System.String")
{
return(null);
}
if (messagesThatContains != null)
{
var resultOfTask = new List <MessageModel>();
var decipherMessage = new SDES();
var decompressFileMessage = new CompresssDecompressActions();
var getUser = new UsersLogic();
foreach (var item in messagesThatContains)
{
var receptor = item.SenderReceptor.Split('|');
if (receptor[0] == LoggedUser)
{//es un mensaje que yo envié
var a = getUser.getUserByUsername(receptor[1]).PrivateKey;
var key = BigInteger.ModPow((int)item.PublicKey, a, p);
var commonKey = Convert.ToString((int)key, 2);
item.Message = item.Message != string.Empty ? decipherMessage.DecipherText(item.Message, commonKey) : string.Empty;
resultOfTask.Add(item);
}
else
{//es un mensaje recibido
var key = BigInteger.ModPow((int)item.PublicKey, UserPrivateKey, p);
var commonKey = Convert.ToString((int)key, 2);
item.Message = item.Message != string.Empty ? decipherMessage.DecipherText(item.Message, commonKey) : string.Empty;
resultOfTask.Add(item);
}
}
return(resultOfTask.FindAll(messages => messages.Message.Contains(valueToLookFor)));
}
else
{
return(null);
}
}
