示例#1
0
        internal IdentityFile(String identity, SshClient jsch)
        {
            this.identity = identity;
            this.jsch     = jsch;
            try {
                Type c = Type.GetType(jsch.getConfig("3des-cbc"));
                cipher = (ICipher)Activator.CreateInstance(c);
                key    = new byte[cipher.getBlockSize()];                // 24
                iv     = new byte[cipher.getIVSize()];                   // 8
                c      = Type.GetType(jsch.getConfig("md5"));
                hash   = (IHASH)(Activator.CreateInstance(c));
                hash.Init();
                FileInfo   file = new FileInfo(identity);
                FileStream fis  = File.OpenRead(identity);
                byte[]     buf  = new byte[(int)(file.Length)];
                int        len  = fis.Read(buf, 0, buf.Length);
                fis.Close();

                int i = 0;
                while (i < len)
                {
                    if (buf[i] == 'B' && buf[i + 1] == 'E' && buf[i + 2] == 'G' && buf[i + 3] == 'I')
                    {
                        i += 6;
                        if (buf[i] == 'D' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
                        {
                            type = DSS;
                        }
                        else if (buf[i] == 'R' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
                        {
                            type = RSA;
                        }
                        else if (buf[i] == 'S' && buf[i + 1] == 'S' && buf[i + 2] == 'H')                           // FSecure
                        {
                            type    = UNKNOWN;
                            keytype = FSECURE;
                        }
                        else
                        {
                            //System.out.println("invalid format: "+identity);
                            throw new SshClientException("invaid privatekey: " + identity);
                        }
                        i += 3;
                        continue;
                    }
                    if (buf[i] == 'C' && buf[i + 1] == 'B' && buf[i + 2] == 'C' && buf[i + 3] == ',')
                    {
                        i += 4;
                        for (int ii = 0; ii < iv.Length; ii++)
                        {
                            iv[ii] = (byte)(((a2b(buf[i++]) << 4) & 0xf0) +
                                            (a2b(buf[i++]) & 0xf));
                        }
                        continue;
                    }
                    if (buf[i] == 0x0d &&
                        i + 1 < buf.Length && buf[i + 1] == 0x0a)
                    {
                        i++;
                        continue;
                    }
                    if (buf[i] == 0x0a && i + 1 < buf.Length)
                    {
                        if (buf[i + 1] == 0x0a)
                        {
                            i += 2;
                            break;
                        }
                        if (buf[i + 1] == 0x0d &&
                            i + 2 < buf.Length && buf[i + 2] == 0x0a)
                        {
                            i += 3;
                            break;
                        }
                        bool inheader = false;
                        for (int j = i + 1; j < buf.Length; j++)
                        {
                            if (buf[j] == 0x0a)
                            {
                                break;
                            }
                            //if(buf[j]==0x0d) break;
                            if (buf[j] == ':')
                            {
                                inheader = true;
                                break;
                            }
                        }
                        if (!inheader)
                        {
                            i++;
                            encrypted = false;                                // no passphrase
                            break;
                        }
                    }
                    i++;
                }

                if (type == ERROR)
                {
                    throw new SshClientException("invaid privatekey: " + identity);
                }

                int start = i;
                while (i < len)
                {
                    if (buf[i] == 0x0a)
                    {
                        bool xd = (buf[i - 1] == 0x0d);
                        Array.Copy(buf, i + 1,
                                   buf,
                                   i - (xd ? 1 : 0),
                                   len - i - 1 - (xd ? 1 : 0)
                                   );
                        if (xd)
                        {
                            len--;
                        }
                        len--;
                        continue;
                    }
                    if (buf[i] == '-')
                    {
                        break;
                    }
                    i++;
                }
                encoded_data = StringAux.fromBase64(buf, start, i - start);

                if (encoded_data.Length > 4 &&                            // FSecure
                    encoded_data[0] == (byte)0x3f &&
                    encoded_data[1] == (byte)0x6f &&
                    encoded_data[2] == (byte)0xf9 &&
                    encoded_data[3] == (byte)0xeb)
                {
                    Buffer _buf = new Buffer(encoded_data);
                    _buf.getInt();                      // 0x3f6ff9be
                    _buf.getInt();
                    byte[] _type = _buf.getString();
                    //System.out.println("type: "+new String(_type));
                    byte[] _cipher  = _buf.getString();
                    String s_cipher = System.Text.Encoding.Default.GetString(_cipher);
                    //System.out.println("cipher: "+cipher);
                    if (s_cipher.Equals("3des-cbc"))
                    {
                        _buf.getInt();
                        byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
                        _buf.getByte(foo);
                        encoded_data = foo;
                        encrypted    = true;
                        throw new SshClientException("unknown privatekey format: " + identity);
                    }
                    else if (s_cipher.Equals("none"))
                    {
                        _buf.getInt();
                        //_buf.getInt();

                        encrypted = false;

                        byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
                        _buf.getByte(foo);
                        encoded_data = foo;
                    }
                }

                try {
                    file = new FileInfo(identity + ".pub");
                    fis  = File.OpenRead(identity + ".pub");
                    buf  = new byte[(int)(file.Length)];
                    len  = fis.Read(buf, 0, buf.Length);
                    fis.Close();
                }
                catch {
                    return;
                }

                if (buf.Length > 4 &&                             // FSecure's public key
                    buf[0] == '-' && buf[1] == '-' && buf[2] == '-' && buf[3] == '-')
                {
                    i = 0;
                    do
                    {
                        i++;
                    } while (buf.Length > i && buf[i] != 0x0a);
                    if (buf.Length <= i)
                    {
                        return;
                    }

                    while (true)
                    {
                        if (buf[i] == 0x0a)
                        {
                            bool inheader = false;
                            for (int j = i + 1; j < buf.Length; j++)
                            {
                                if (buf[j] == 0x0a)
                                {
                                    break;
                                }
                                if (buf[j] == ':')
                                {
                                    inheader = true;
                                    break;
                                }
                            }
                            if (!inheader)
                            {
                                i++;
                                break;
                            }
                        }
                        i++;
                    }
                    if (buf.Length <= i)
                    {
                        return;
                    }

                    start = i;
                    while (i < len)
                    {
                        if (buf[i] == 0x0a)
                        {
                            Array.Copy(buf, i + 1, buf, i, len - i - 1);
                            len--;
                            continue;
                        }
                        if (buf[i] == '-')
                        {
                            break;
                        }
                        i++;
                    }
                    publickeyblob = StringAux.fromBase64(buf, start, i - start);

                    if (type == UNKNOWN)
                    {
                        if (publickeyblob[8] == 'd')
                        {
                            type = DSS;
                        }
                        else if (publickeyblob[8] == 'r')
                        {
                            type = RSA;
                        }
                    }
                }
                else
                {
                    if (buf[0] != 's' || buf[1] != 's' || buf[2] != 'h' || buf[3] != '-')
                    {
                        return;
                    }
                    i = 0;
                    while (i < len)
                    {
                        if (buf[i] == ' ')
                        {
                            break;
                        }
                        i++;
                    }
                    i++;
                    if (i >= len)
                    {
                        return;
                    }
                    start = i;
                    while (i < len)
                    {
                        if (buf[i] == ' ')
                        {
                            break;
                        }
                        i++;
                    }
                    publickeyblob = StringAux.fromBase64(buf, start, i - start);
                }
            }
            catch (Exception e) {
                Console.WriteLine("Identity: " + e);
                if (e is SshClientException)
                {
                    throw (SshClientException)e;
                }
                throw new SshClientException(e.ToString());
            }
        }
示例#2
0
 internal KnownHosts(SshClient jsch)
     : base()
 {
     this.jsch = jsch;
     pool      = new System.Collections.ArrayList();
 }