/*
* do_client()
*/
private void do_client(int build_mode, string[] args)
{
if (build_mode < axtls.SSL_BUILD_ENABLE_CLIENT)
{
print_client_options(build_mode, args[1]);
}
int i = 1, res;
int port = 4433;
bool quiet = false;
string password = null;
int reconnect = 0;
string private_key_file = null;
string hostname = "127.0.0.1";
/* organise the cert/ca_cert lists */
int cert_index = 0;
int ca_cert_index = 0;
int cert_size = SSLUtil.MaxCerts();
int ca_cert_size = SSLUtil.MaxCACerts();
string[] cert = new string[cert_size];
string[] ca_cert = new string[ca_cert_size];
uint options = axtls.SSL_SERVER_VERIFY_LATER | axtls.SSL_DISPLAY_CERTS;
byte[] session_id = null;
while (i < args.Length)
{
if (args[i] == "-connect")
{
string host_port;
if (i >= args.Length - 1)
{
print_client_options(build_mode, args[i]);
}
host_port = args[++i];
int index_colon;
if ((index_colon = host_port.IndexOf(':')) < 0)
{
print_client_options(build_mode, args[i]);
}
hostname = new string(host_port.ToCharArray(),
0, index_colon);
port = Int32.Parse(new String(host_port.ToCharArray(),
index_colon + 1, host_port.Length - index_colon - 1));
}
else if (args[i] == "-cert")
{
if (i >= args.Length - 1 || cert_index >= cert_size)
{
print_client_options(build_mode, args[i]);
}
cert[cert_index++] = args[++i];
}
else if (args[i] == "-key")
{
if (i >= args.Length - 1)
{
print_client_options(build_mode, args[i]);
}
private_key_file = args[++i];
options |= axtls.SSL_NO_DEFAULT_KEY;
}
else if (args[i] == "-CAfile")
{
if (i >= args.Length - 1 || ca_cert_index >= ca_cert_size)
{
print_client_options(build_mode, args[i]);
}
ca_cert[ca_cert_index++] = args[++i];
}
else if (args[i] == "-verify")
{
options &= ~(uint)axtls.SSL_SERVER_VERIFY_LATER;
}
else if (args[i] == "-reconnect")
{
reconnect = 4;
}
else if (args[i] == "-quiet")
{
quiet = true;
options &= ~(uint)axtls.SSL_DISPLAY_CERTS;
}
else if (args[i] == "-pass")
{
if (i >= args.Length - 1)
{
print_client_options(build_mode, args[i]);
}
password = args[++i];
}
else if (build_mode == axtls.SSL_BUILD_FULL_MODE)
{
if (args[i] == "-debug")
{
options |= axtls.SSL_DISPLAY_BYTES;
}
else if (args[i] == "-state")
{
options |= axtls.SSL_DISPLAY_STATES;
}
else if (args[i] == "-show-rsa")
{
options |= axtls.SSL_DISPLAY_RSA;
}
else
{
print_client_options(build_mode, args[i]);
}
}
else /* don't know what this is */
{
print_client_options(build_mode, args[i]);
}
i++;
}
// IPHostEntry hostInfo = Dns.Resolve(hostname);
IPHostEntry hostInfo = Dns.GetHostEntry(hostname);
IPAddress[] addresses = hostInfo.AddressList;
IPEndPoint ep = new IPEndPoint(addresses[0], port);
Socket client_sock = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
client_sock.Connect(ep);
if (!client_sock.Connected)
{
Console.WriteLine("could not connect");
Environment.Exit(1);
}
if (!quiet)
{
Console.WriteLine("CONNECTED");
}
/**********************************************************************
* This is where the interesting stuff happens. Up until now we've
* just been setting up sockets etc. Now we do the SSL handshake.
**********************************************************************/
SSLClient ssl_ctx = new SSLClient(options,
axtls.SSL_DEFAULT_CLNT_SESS);
if (ssl_ctx == null)
{
Console.Error.WriteLine("Error: Client context is invalid");
Environment.Exit(1);
}
if (private_key_file != null)
{
int obj_type = axtls.SSL_OBJ_RSA_KEY;
if (private_key_file.EndsWith(".p8"))
{
obj_type = axtls.SSL_OBJ_PKCS8;
}
else if (private_key_file.EndsWith(".p12"))
{
obj_type = axtls.SSL_OBJ_PKCS12;
}
if (ssl_ctx.ObjLoad(obj_type,
private_key_file, password) != axtls.SSL_OK)
{
Console.Error.WriteLine("Private key '" + private_key_file +
"' is undefined.");
Environment.Exit(1);
}
}
for (i = 0; i < cert_index; i++)
{
if (ssl_ctx.ObjLoad(axtls.SSL_OBJ_X509_CERT,
cert[i], null) != axtls.SSL_OK)
{
Console.WriteLine("Certificate '" + cert[i] +
"' is undefined.");
Environment.Exit(1);
}
}
for (i = 0; i < ca_cert_index; i++)
{
if (ssl_ctx.ObjLoad(axtls.SSL_OBJ_X509_CACERT,
ca_cert[i], null) != axtls.SSL_OK)
{
Console.WriteLine("Certificate '" + cert[i] +
"' is undefined.");
Environment.Exit(1);
}
}
SSL ssl = new SSL(new IntPtr(0)); /* keep compiler happy */
/* Try session resumption? */
if (reconnect > 0)
{
while (reconnect-- > 0)
{
ssl = ssl_ctx.Connect(client_sock, session_id);
if ((res = ssl.HandshakeStatus()) != axtls.SSL_OK)
{
if (!quiet)
{
SSLUtil.DisplayError(res);
}
ssl.Dispose();
Environment.Exit(1);
}
display_session_id(ssl);
session_id = ssl.GetSessionId();
if (reconnect > 0)
{
ssl.Dispose();
client_sock.Close();
/* and reconnect */
client_sock = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
client_sock.Connect(ep);
}
}
}
else
{
ssl = ssl_ctx.Connect(client_sock, null);
}
/* check the return status */
if ((res = ssl.HandshakeStatus()) != axtls.SSL_OK)
{
if (!quiet)
{
SSLUtil.DisplayError(res);
}
Environment.Exit(1);
}
if (!quiet)
{
string common_name =
ssl.GetCertificateDN(axtls.SSL_X509_CERT_COMMON_NAME);
if (common_name != null)
{
Console.WriteLine("Common Name:\t\t\t" + common_name);
}
display_session_id(ssl);
display_cipher(ssl);
}
for (;;)
{
string user_input = Console.ReadLine();
if (user_input == null)
{
break;
}
byte[] buf = new byte[user_input.Length + 2];
buf[buf.Length - 2] = (byte)'\n'; /* add the carriage return */
buf[buf.Length - 1] = 0; /* null terminate */
for (i = 0; i < buf.Length - 2; i++)
{
buf[i] = (byte)user_input[i];
}
if ((res = ssl_ctx.Write(ssl, buf, buf.Length)) < axtls.SSL_OK)
{
if (!quiet)
{
SSLUtil.DisplayError(res);
}
break;
}
}
ssl_ctx.Dispose();
}
void Run(string[] args)
{
bool verbose = true;
bool trace = false;
string host = null;
string sni = null;
List <string> csNames = null;
List <string> hsNames = null;
int vmin = 0;
int vmax = 0;
for (int i = 0; i < args.Length; i++)
{
string a = args[i];
if (!a.StartsWith("-"))
{
if (host != null)
{
throw new Exception(
"duplicate host name");
}
host = a;
continue;
}
a = a.Substring(1).ToLowerInvariant();
switch (a)
{
case "v":
verbose = true;
break;
case "q":
verbose = false;
break;
case "trace":
trace = true;
break;
case "sni":
if (sni != null)
{
throw new Exception(
"duplicate SNI");
}
if (++i >= args.Length)
{
throw new Exception(
"no SNI provided");
}
sni = args[i];
break;
case "nosni":
if (sni != null)
{
throw new Exception(
"duplicate SNI");
}
sni = "";
break;
case "cs":
if (++i >= args.Length)
{
throw new Exception(
"no cipher names provided");
}
if (csNames == null)
{
csNames = new List <string>();
}
AddNames(csNames, args[i]);
break;
case "hs":
if (++i >= args.Length)
{
throw new Exception(
"no hash-and-sign provided");
}
if (hsNames == null)
{
hsNames = new List <string>();
}
AddNames(hsNames, args[i]);
break;
case "vmin":
if (vmin != 0)
{
throw new Exception(
"duplicate minimum version");
}
if (++i >= args.Length)
{
throw new Exception(
"no minimum version provided");
}
vmin = SSL.GetVersionByName(args[i]);
break;
case "vmax":
if (vmax != 0)
{
throw new Exception(
"duplicate maximum version");
}
if (++i >= args.Length)
{
throw new Exception(
"no maximum version provided");
}
vmax = SSL.GetVersionByName(args[i]);
break;
default:
throw new Exception(string.Format(
"Unknown option: '-{0}'", a));
}
}
if (host == null)
{
throw new Exception("no host name provided");
}
int j = host.LastIndexOf(':');
int port;
if (j < 0)
{
port = 443;
}
else
{
if (!Int32.TryParse(host.Substring(j + 1), out port) ||
port <= 0 || port > 65535)
{
throw new Exception("invalid port number");
}
host = host.Substring(0, j);
}
if (sni == null)
{
sni = host;
}
int[] css = null;
if (csNames != null)
{
css = new int[csNames.Count];
for (int i = 0; i < css.Length; i++)
{
css[i] = SSL.GetSuiteByName(csNames[i]);
}
}
int[] hss = null;
if (hsNames != null)
{
hss = new int[hsNames.Count];
for (int i = 0; i < hss.Length; i++)
{
hss[i] = SSL.GetHashAndSignByName(hsNames[i]);
}
}
if (vmin != 0 && vmax != 0 && vmin > vmax)
{
throw new Exception("invalid version range");
}
/*
* Connect to the designated server.
*/
TcpClient tc = new TcpClient(host, port);
Socket sock = tc.Client;
Stream ns = tc.GetStream();
if (trace)
{
MergeStream ms = new MergeStream(ns, ns);
ms.Debug = Console.Out;
ns = ms;
}
SSLClient ssl = new SSLClient(ns);
if (sni != "")
{
ssl.ServerName = sni;
}
if (css != null)
{
ssl.SupportedCipherSuites = css;
}
if (hss != null)
{
ssl.SupportedHashAndSign = hss;
}
if (vmin != 0)
{
ssl.VersionMin = vmin;
}
if (vmax != 0)
{
ssl.VersionMax = vmax;
}
/*
* This is a debug tool; we accept the server certificate
* without validation.
*/
ssl.ServerCertValidator = SSLClient.InsecureCertValidator;
/*
* Force a Flush. There is no application data to flush
* at this point, but as a side-effect it forces the
* handshake to complete.
*/
ssl.Flush();
if (verbose)
{
Console.WriteLine("Handshake completed:");
Console.WriteLine(" Version = {0}",
SSL.VersionName(ssl.Version));
Console.WriteLine(" Cipher suite = {0}",
SSL.CipherSuiteName(ssl.CipherSuite));
}
/*
* Now relay data back and forth between the connection
* and the console. Since the underlying SSL stream does
* not support simultaneous reads and writes, we use
* the following approximation:
*
* - We poll on the socket for incoming data. When there
* is some activity, we assume that some application
* data (or closure) follows, and we read it. It is
* then immediately written out (synchronously) on
* standard output.
*
* - When waiting for read activity on the socket, we
* regularly (every 200 ms) check for data to read on
* standard input. If there is, we read it, and send
* it synchronously on the SSL stream.
*
* - The data reading from console is performed by
* another thread.
*
* Since SSL records are read one by one, we know that,
* by using a buffer larger than 16 kB, a single Read()
* call cannot leave any buffered application data.
*/
ssl.CloseSub = false;
Thread t = new Thread(new ThreadStart(CRThread));
t.IsBackground = true;
t.Start();
byte[] buf = new byte[16384];
Stream stdout = Console.OpenStandardOutput();
for (;;)
{
if (sock.Poll(200000, SelectMode.SelectRead))
{
int rlen = ssl.Read(buf, 0, buf.Length);
if (rlen < 0)
{
Console.WriteLine(
"Connection closed.\n");
break;
}
stdout.Write(buf, 0, rlen);
}
else
{
while (CRHasData())
{
int rlen = CRRead(buf, 0, buf.Length);
if (rlen < 0)
{
ssl.Close();
break;
}
if (rlen > 0)
{
ssl.Write(buf, 0, rlen);
}
}
}
}
sock.Close();
}