private static async Task GetMessages(GetMessagesOptions opts)
{
var currentUser = ContactsExtensions.GetCurrentUser();
var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", currentUser.Token);
var messages = await httpClient.GetFromJsonAsync <List <Message> >($"{Url}/messaging/messages");
if (messages != null)
{
var keyManager = new KeyManager();
var privateKey = keyManager.ReadPrivateKeyFromFile(Path.Combine(BasePath, $"{currentUser.Username}.data/{currentUser.Username}.private.pem"));
foreach (var message in messages)
{
var key = keyManager.RsaDecrypt(message.Key, privateKey);
var messagePlainText = keyManager.AesDecrypt(message.Content, key);
System.Console.WriteLine($"{ContactsExtensions.GetUserNameById(message.SenderId)}: {messagePlainText}");
if (opts.Debug)
{
System.Console.WriteLine("Received:");
System.Console.WriteLine(JsonConvert.SerializeObject(messages));
}
}
}
else
{
throw new Exception("messaging/messages failed");
}
}
private static string GetUserPublicKeyByName(string userName)
{
var currentUser = ContactsExtensions.GetCurrentUser();
var users = JsonConvert.DeserializeObject <List <UserDetail> >(
File.ReadAllText(Path.Combine(BasePath, $"{currentUser.Username}.data/contacts.data")));
var user = users.FirstOrDefault(u => u.Username == userName);
return(user.PublicKey);
}
private static async Task LoadContacts()
{
var currentUser = ContactsExtensions.GetCurrentUser();
var path = Path.Combine(BasePath, $"{currentUser.Username}.data/contacts.data");
var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", currentUser.Token);
var users = await httpClient.GetFromJsonAsync <List <UserDetail> >($"{Url}/messaging/list");
File.WriteAllText(Path.Combine(BasePath, $"{currentUser.Username}.data/contacts.data"), JsonConvert.SerializeObject(users));
}
private static async Task DisplayUsers()
{
var currentUser = ContactsExtensions.GetCurrentUser();
await LoadContacts();
var users = JsonConvert.DeserializeObject <List <UserDetail> >(File.ReadAllText(Path.Combine(BasePath, $"{currentUser.Username}.data/contacts.data")));
System.Console.WriteLine("Users: ");
foreach (var user in users)
{
System.Console.WriteLine(user.Username);
}
}
private static async Task Send(SendOptions opts)
{
var currentUser = ContactsExtensions.GetCurrentUser();
if (opts.To == currentUser.Username)
{
System.Console.WriteLine("Cannot send message to yourself");
return;
}
var keyManager = new KeyManager();
var recipientPublicKeyString = GetUserPublicKeyByName(opts.To);
var publicKey = keyManager.LoadPublicKey(recipientPublicKeyString);
var(encryptedMessage, aesKey) = keyManager.AesEncrypt(opts.Message);
var encryptedKey = keyManager.RsaEncrypt(aesKey, publicKey);
var httpClient = new HttpClient();
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", currentUser.Token);
var message = new Message()
{
Key = encryptedKey,
Content = encryptedMessage,
SenderId = currentUser.UserId,
RecipientId = ContactsExtensions.GetUserIdByName(opts.To)
};
if (opts.Debug)
{
System.Console.WriteLine("Data sent:");
System.Console.WriteLine(JsonConvert.SerializeObject(message));
}
var postRequest = new HttpRequestMessage(HttpMethod.Post, new Uri($"{Url}/messaging/send"))
{
Content = JsonContent.Create(message)
};
var response = await httpClient.SendAsync(postRequest);
response.EnsureSuccessStatusCode();
}