1: '
2: ' Copyright (c) 2007, Cameron Rich
3: '
4: ' All rights reserved.
5: '
6: ' Redistribution and use in source and binary forms, with or without
7: ' modification, are permitted provided that the following conditions are met:
8: '
9: ' * Redistributions of source code must retain the above copyright notice,
10: ' this list of conditions and the following disclaimer.
11: ' * Redistributions in binary form must reproduce the above copyright
12: ' notice, this list of conditions and the following disclaimer in the
13: ' documentation and/or other materials provided with the distribution.
14: ' * Neither the name of the axTLS project nor the names of its
15: ' contributors may be used to endorse or promote products derived
16: ' from this software without specific prior written permission.
17: '
18: ' THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19: ' "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20: ' LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21: ' A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
22: ' CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23: ' SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
24: ' TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25: ' DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
26: ' OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27: ' NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28: ' THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: '
30:
31: '
32: ' Demonstrate the use of the axTLS library in VB.NET with a set of
33: ' command-line parameters similar to openssl. In fact, openssl clients
34: ' should be able to communicate with axTLS servers and visa-versa.
35: '
36: ' This code has various bits enabled depending on the configuration. To enable
37: ' the most interesting version, compile with the 'full mode' enabled.
38: '
39: ' To see what options you have, run the following:
40: ' > axssl.vbnet.exe s_server -?
41: ' > axssl.vbnet.exe s_client -?
42: '
43: ' The axtls shared library must be in the same directory or be found
44: ' by the OS.
45: '
46:
47: Imports System
48: Imports System.Net
49: Imports System.Net.Sockets
50: Imports Microsoft.VisualBasic
51: Imports axTLSvb
52:
53: Public Class axssl
54: '
55: ' do_server()
56: '
57: Public Sub do_server(ByVal build_mode As Integer, _
58: ByVal args() As String)
59: Dim i As Integer = 1
60: Dim port As Integer = 4433
61: Dim options As Integer = axtls.SSL_DISPLAY_CERTS
62: Dim quiet As Boolean = False
63: Dim password As String = Nothing
64: Dim private_key_file As String = Nothing
65:
66: ' organise the cert/ca_cert lists
67: Dim cert_size As Integer = SSLUtil.MaxCerts()
68: Dim ca_cert_size As Integer = SSLUtil.MaxCACerts()
69: Dim cert(cert_size) As String
70: Dim ca_cert(ca_cert_size) As String
71: Dim cert_index As Integer = 0
72: Dim ca_cert_index As Integer = 0
73:
74: While i < args.Length
75: If args(i) = "-accept" Then
76: If i >= args.Length-1
77: print_server_options(build_mode, args(i))
78: End If
79:
80: i += 1
81: port = Int32.Parse(args(i))
82: ElseIf args(i) = "-quiet"
83: quiet = True
84: options = options And Not axtls.SSL_DISPLAY_CERTS
85: ElseIf build_mode >= axtls.SSL_BUILD_SERVER_ONLY
86: If args(i) = "-cert"
87: If i >= args.Length-1 Or cert_index >= cert_size
88: print_server_options(build_mode, args(i))
89: End If
90:
91: i += 1
92: cert(cert_index) = args(i)
93: cert_index += 1
94: ElseIf args(i) = "-key"
95: If i >= args.Length-1
96: print_server_options(build_mode, args(i))
97: End If
98:
99: i += 1
100: private_key_file = args(i)
101: options = options Or axtls.SSL_NO_DEFAULT_KEY
102: ElseIf args(i) = "-pass"
103: If i >= args.Length-1
104: print_server_options(build_mode, args(i))
105: End If
106:
107: i += 1
108: password = args(i)
109: ElseIf build_mode >= axtls.SSL_BUILD_ENABLE_VERIFICATION
110: If args(i) = "-verify" Then
111: options = options Or axtls.SSL_CLIENT_AUTHENTICATION
112: ElseIf args(i) = "-CAfile"
113: If i >= args.Length-1 Or _
114: ca_cert_index >= ca_cert_size Then
115: print_server_options(build_mode, args(i))
116: End If
117:
118: i += 1
119: ca_cert(ca_cert_index) = args(i)
120: ca_cert_index += 1
121: ElseIf build_mode = axtls.SSL_BUILD_FULL_MODE
122: If args(i) = "-debug" Then
123: options = options Or axtls.SSL_DISPLAY_BYTES
124: ElseIf args(i) = "-state"
125: options = options Or axtls.SSL_DISPLAY_STATES
126: ElseIf args(i) = "-show-rsa"
127: options = options Or axtls.SSL_DISPLAY_RSA
128: Else
129: print_server_options(build_mode, args(i))
130: End If
131: Else
132: print_server_options(build_mode, args(i))
133: End If
134: Else
135: print_server_options(build_mode, args(i))
136: End If
137: End If
138:
139: i += 1
140: End While
141:
142: ' Create socket for incoming connections
143: Dim ep As IPEndPoint = New IPEndPoint(IPAddress.Any, port)
144: Dim server_sock As TcpListener = New TcpListener(ep)
145: server_sock.Start()
146:
147: '*********************************************************************
148: ' This is where the interesting stuff happens. Up until now we've
149: ' just been setting up sockets etc. Now we do the SSL handshake.
150: '*********************************************************************/
151: Dim ssl_ctx As SSLServer = New SSLServer(options, _
152: axtls.SSL_DEFAULT_SVR_SESS)
153:
154: If ssl_ctx Is Nothing Then
155: Console.Error.WriteLine("Error: Server context is invalid")
156: Environment.Exit(1)
157: End If
158:
159: If private_key_file <> Nothing Then
160: Dim obj_type As Integer = axtls.SSL_OBJ_RSA_KEY
161:
162: If private_key_file.EndsWith(".p8") Then
163: obj_type = axtls.SSL_OBJ_PKCS8
164: Else If (private_key_file.EndsWith(".p12"))
165: obj_type = axtls.SSL_OBJ_PKCS12
166: End If
167:
168: If ssl_ctx.ObjLoad(obj_type, private_key_file, _
169: password) <> axtls.SSL_OK Then
170: Console.Error.WriteLine("Error: Private key '" & _
171: private_key_file & "' is undefined.")
172: Environment.Exit(1)
173: End If
174: End If
175:
176: For i = 0 To cert_index-1
177: If ssl_ctx.ObjLoad(axtls.SSL_OBJ_X509_CERT, _
178: cert(i), Nothing) <> axtls.SSL_OK Then
179: Console.WriteLine("Certificate '" & cert(i) & _
180: "' is undefined.")
181: Environment.Exit(1)
182: End If
183: Next
184:
185: For i = 0 To ca_cert_index-1
186: If ssl_ctx.ObjLoad(axtls.SSL_OBJ_X509_CACERT, _
187: ca_cert(i), Nothing) <> axtls.SSL_OK Then
188: Console.WriteLine("Certificate '" & ca_cert(i) & _
189: "' is undefined.")
190: Environment.Exit(1)
191: End If
192: Next
193:
194: Dim buf As Byte() = Nothing
195: Dim res As Integer
196: Dim ssl As SSL
197:
198: While 1
199: If Not quiet Then
200: Console.WriteLine("ACCEPT")
201: End If
202:
203: Dim client_sock As Socket = server_sock.AcceptSocket()
204:
205: ssl = ssl_ctx.Connect(client_sock)
206:
207: ' do the actual SSL handshake
208: While 1
209: res = ssl_ctx.Read(ssl, buf)
210: If res <> axtls.SSL_OK Then
211: Exit While
212: End If
213:
214: ' check when the connection has been established
215: If ssl.HandshakeStatus() = axtls.SSL_OK
216: Exit While
217: End If
218:
219: ' could do something else here
220: End While
221:
222: If res = axtls.SSL_OK Then ' connection established and ok
223: If Not quiet
224: display_session_id(ssl)
225: display_cipher(ssl)
226: End If
227:
228: ' now read (and display) whatever the client sends us
229: While 1
230: ' keep reading until we get something interesting
231: While 1
232: res = ssl_ctx.Read(ssl, buf)
233: If res <> axtls.SSL_OK Then
234: Exit While
235: End If
236:
237: ' could do something else here
238: End While
239:
240: If res < axtls.SSL_OK
241: If Not quiet
242: Console.WriteLine("CONNECTION CLOSED")
243: End If
244:
245: Exit While
246: End If
247:
248: ' convert to String
249: Dim str(res) As Char
250: For i = 0 To res-1
251: str(i) = Chr(buf(i))
252: Next
253:
254: Console.Write(str)
255: End While
256: ElseIf Not quiet
257: SSLUtil.DisplayError(res)
258: End If
259:
260: ' client was disconnected or the handshake failed. */
261: ssl.Dispose()
262: client_sock.Close()
263: End While
264:
265: ssl_ctx.Dispose()
266: End Sub
267:
268: '
269: ' do_client()
270: '
271: Public Sub do_client(ByVal build_mode As Integer, _
272: ByVal args() As String)
273:
274: If build_mode < axtls.SSL_BUILD_ENABLE_CLIENT Then
275: print_client_options(build_mode, args(1))
276: End If
277:
278: Dim i As Integer = 1
279: Dim res As Integer
280: Dim port As Integer = 4433
281: Dim quiet As Boolean = False
282: Dim password As String = Nothing
283: Dim reconnect As Integer = 0
284: Dim private_key_file As String = Nothing
285: Dim hostname As String = "127.0.0.1"
286:
287: ' organise the cert/ca_cert lists
288: Dim ssl As SSL = Nothing
289: Dim cert_size As Integer = SSLUtil.MaxCerts()
290: Dim ca_cert_size As Integer = SSLUtil.MaxCACerts()
291: Dim cert(cert_size) As String
292: Dim ca_cert(ca_cert_size) As String
293: Dim cert_index As Integer = 0
294: Dim ca_cert_index As Integer = 0
295:
296: Dim options As Integer = _
297: axtls.SSL_SERVER_VERIFY_LATER Or axtls.SSL_DISPLAY_CERTS
298: Dim session_id As Byte() = Nothing
299:
300: While i < args.Length
301: If args(i) = "-connect" Then
302: Dim host_port As String
303:
304: If i >= args.Length-1
305: print_client_options(build_mode, args(i))
306: End If
307:
308: i += 1
309: host_port = args(i)
310:
311: Dim index_colon As Integer = host_port.IndexOf(":"C)
312: If index_colon < 0 Then
313: print_client_options(build_mode, args(i))
314: End If
315:
316: hostname = New String(host_port.ToCharArray(), _
317: 0, index_colon)
318: port = Int32.Parse(New String(host_port.ToCharArray(), _
319: index_colon+1, host_port.Length-index_colon-1))
320: ElseIf args(i) = "-cert"
321: If i >= args.Length-1 Or cert_index >= cert_size Then
322: print_client_options(build_mode, args(i))
323: End If
324:
325: i += 1
326: cert(cert_index) = args(i)
327: cert_index += 1
328: ElseIf args(i) = "-key"
329: If i >= args.Length-1
330: print_client_options(build_mode, args(i))
331: End If
332:
333: i += 1
334: private_key_file = args(i)
335: options = options Or axtls.SSL_NO_DEFAULT_KEY
336: ElseIf args(i) = "-CAfile"
337: If i >= args.Length-1 Or ca_cert_index >= ca_cert_size
338: print_client_options(build_mode, args(i))
339: End If
340:
341: i += 1
342: ca_cert(ca_cert_index) = args(i)
343: ca_cert_index += 1
344: ElseIf args(i) = "-verify"
345: options = options And Not axtls.SSL_SERVER_VERIFY_LATER
346: ElseIf args(i) = "-reconnect"
347: reconnect = 4
348: ElseIf args(i) = "-quiet"
349: quiet = True
350: options = options And Not axtls.SSL_DISPLAY_CERTS
351: ElseIf args(i) = "-pass"
352: If i >= args.Length-1
353: print_client_options(build_mode, args(i))
354: End If
355:
356: i += 1
357: password = args(i)
358: ElseIf build_mode = axtls.SSL_BUILD_FULL_MODE
359: If args(i) = "-debug" Then
360: options = options Or axtls.SSL_DISPLAY_BYTES
361: ElseIf args(i) = "-state"
362: options = options Or axtls.SSL_DISPLAY_STATES
363: ElseIf args(i) = "-show-rsa"
364: options = options Or axtls.SSL_DISPLAY_RSA
365: Else
366: print_client_options(build_mode, args(i))
367: End If
368: Else ' don't know what this is
369: print_client_options(build_mode, args(i))
370: End If
371:
372: i += 1
373: End While
374:
375: 'Dim hostInfo As IPHostEntry = Dns.Resolve(hostname)
376: Dim hostInfo As IPHostEntry = Dns.GetHostEntry(hostname)
377: Dim addresses As IPAddress() = hostInfo.AddressList
378: Dim ep As IPEndPoint = New IPEndPoint(addresses(0), port)
379: Dim client_sock As Socket = New Socket(AddressFamily.InterNetwork, _
380: SocketType.Stream, ProtocolType.Tcp)
381: client_sock.Connect(ep)
382:
383: If Not client_sock.Connected Then
384: Console.WriteLine("could not connect")
385: Environment.Exit(1)
386: End If
387:
388: If Not quiet Then
389: Console.WriteLine("CONNECTED")
390: End If
391:
392: '*********************************************************************
393: ' This is where the interesting stuff happens. Up until now we've
394: ' just been setting up sockets etc. Now we do the SSL handshake.
395: '*********************************************************************/
396: Dim ssl_ctx As SSLClient = New SSLClient(options, _
397: axtls.SSL_DEFAULT_CLNT_SESS)
398:
399: If ssl_ctx Is Nothing Then
400: Console.Error.WriteLine("Error: Client context is invalid")
401: Environment.Exit(1)
402: End If
403:
404: If private_key_file <> Nothing Then
405: Dim obj_type As Integer = axtls.SSL_OBJ_RSA_KEY
406:
407: If private_key_file.EndsWith(".p8") Then
408: obj_type = axtls.SSL_OBJ_PKCS8
409: Else If (private_key_file.EndsWith(".p12"))
410: obj_type = axtls.SSL_OBJ_PKCS12
411: End If
412:
413: If ssl_ctx.ObjLoad(obj_type, private_key_file, _
414: password) <> axtls.SSL_OK Then
415: Console.Error.WriteLine("Error: Private key '" & _
416: private_key_file & "' is undefined.")
417: Environment.Exit(1)
418: End If
419: End If
420:
421: For i = 0 To cert_index-1
422: If ssl_ctx.ObjLoad(axtls.SSL_OBJ_X509_CERT, _
423: cert(i), Nothing) <> axtls.SSL_OK Then
424: Console.WriteLine("Certificate '" & cert(i) & _
425: "' is undefined.")
426: Environment.Exit(1)
427: End If
428: Next
429:
430: For i = 0 To ca_cert_index-1
431: If ssl_ctx.ObjLoad(axtls.SSL_OBJ_X509_CACERT, _
432: ca_cert(i), Nothing) <> axtls.SSL_OK Then
433: Console.WriteLine("Certificate '" & ca_cert(i) & _
434: "' is undefined.")
435: Environment.Exit(1)
436: End If
437: Next
438:
439: ' Try session resumption?
440: If reconnect > 0 Then
441: While reconnect > 0
442: reconnect -= 1
443: ssl = ssl_ctx.Connect(client_sock, session_id)
444:
445: res = ssl.HandshakeStatus()
446: If res <> axtls.SSL_OK Then
447: If Not quiet Then
448: SSLUtil.DisplayError(res)
449: End If
450:
451: ssl.Dispose()
452: Environment.Exit(1)
453: End If
454:
455: display_session_id(ssl)
456: session_id = ssl.GetSessionId()
457:
458: If reconnect > 0 Then
459: ssl.Dispose()
460: client_sock.Close()
461:
462: ' and reconnect
463: client_sock = New Socket(AddressFamily.InterNetwork, _
464: SocketType.Stream, ProtocolType.Tcp)
465: client_sock.Connect(ep)
466: End If
467: End While
468: Else
469: ssl = ssl_ctx.Connect(client_sock, Nothing)
470: End If
471:
472: ' check the return status
473: res = ssl.HandshakeStatus()
474: If res <> axtls.SSL_OK Then
475: If Not quiet Then
476: SSLUtil.DisplayError(res)
477: End If
478:
479: Environment.Exit(1)
480: End If
481:
482: If Not quiet Then
483: Dim common_name As String = _
484: ssl.GetCertificateDN(axtls.SSL_X509_CERT_COMMON_NAME)
485:
486: If common_name <> Nothing
487: Console.WriteLine("Common Name:" & _
488: ControlChars.Tab & ControlChars.Tab & _
489: ControlChars.Tab & common_name)
490: End If
491:
492: display_session_id(ssl)
493: display_cipher(ssl)
494: End If
495:
496: While (1)
497: Dim user_input As String = Console.ReadLine()
498:
499: If user_input = Nothing Then
500: Exit While
501: End If
502:
503: Dim buf(user_input.Length+1) As Byte
504: buf(buf.Length-2) = Asc(ControlChars.Lf) ' add the carriage return
505: buf(buf.Length-1) = 0 ' null terminate
506:
507: For i = 0 To user_input.Length-1
508: buf(i) = Asc(user_input.Chars(i))
509: Next
510:
511: res = ssl_ctx.Write(ssl, buf, buf.Length)
512: If res < axtls.SSL_OK Then
513: If Not quiet Then
514: SSLUtil.DisplayError(res)
515: End If
516:
517: Exit While
518: End If
519: End While
520:
521: ssl_ctx.Dispose()
522: End Sub
523:
524: '
525: ' Display what cipher we are using
526: '
527: Private Sub display_cipher(ByVal ssl As SSL)
528: Console.Write("CIPHER is ")
529:
530: Select ssl.GetCipherId()
531: Case axtls.SSL_AES128_SHA
532: Console.WriteLine("AES128-SHA")
533:
534: Case axtls.SSL_AES256_SHA
535: Console.WriteLine("AES256-SHA")
536:
537: Case axtls.SSL_RC4_128_SHA
538: Console.WriteLine("RC4-SHA")
539:
540: Case axtls.SSL_RC4_128_MD5
541: Console.WriteLine("RC4-MD5")
542:
543: Case Else
544: Console.WriteLine("Unknown - " & ssl.GetCipherId())
545: End Select
546: End Sub
547:
548: '
549: ' Display what session id we have.
550: '
551: Private Sub display_session_id(ByVal ssl As SSL)
552: Dim session_id As Byte() = ssl.GetSessionId()
553:
554: If session_id.Length > 0 Then
555: Console.WriteLine("-----BEGIN SSL SESSION PARAMETERS-----")
556: Dim b As Byte
557: For Each b In session_id
558: Console.Write("{0:x02}", b)
559: Next
560:
561: Console.WriteLine()
562: Console.WriteLine("-----END SSL SESSION PARAMETERS-----")
563: End If
564: End Sub
565:
566: '
567: ' We've had some sort of command-line error. Print out the basic options.
568: '
569: Public Sub print_options(ByVal options As String)
570: Console.WriteLine("axssl: Error: '" & options & _
571: "' is an invalid command.")
572: Console.WriteLine("usage: axssl.vbnet [s_server|s_client|" & _
573: "version] [args ...]")
574: Environment.Exit(1)
575: End Sub
576:
577: '
578: ' We've had some sort of command-line error. Print out the server options.
579: '
580: Private Sub print_server_options(ByVal build_mode As Integer, _
581: ByVal options As String)
582: Dim cert_size As Integer = SSLUtil.MaxCerts()
583: Dim ca_cert_size As Integer = SSLUtil.MaxCACerts()
584:
585: Console.WriteLine("unknown option " & options)
586: Console.WriteLine("usage: s_server [args ...]")
587: Console.WriteLine(" -accept arg" & ControlChars.Tab & _
588: "- port to accept on (default is 4433)")
589: Console.WriteLine(" -quiet" & ControlChars.Tab & ControlChars.Tab & _
590: "- No server output")
591: If build_mode >= axtls.SSL_BUILD_SERVER_ONLY
592: Console.WriteLine(" -cert arg" & ControlChars.Tab & _
593: "- certificate file to add (in addition to default) to chain -")
594: Console.WriteLine(ControlChars.Tab & ControlChars.Tab & _
595: " Can repeat up to " & cert_size & " times")
596: Console.WriteLine(" -key arg" & ControlChars.Tab & _
597: "- Private key file to use")
598: Console.WriteLine(" -pass" & ControlChars.Tab & ControlChars.Tab & _
599: "- private key file pass phrase source")
600: End If
601:
602: If build_mode >= axtls.SSL_BUILD_ENABLE_VERIFICATION
603: Console.WriteLine(" -verify" & ControlChars.Tab & _
604: "- turn on peer certificate verification")
605: Console.WriteLine(" -CAfile arg" & ControlChars.Tab & _
606: "- Certificate authority")
607: Console.WriteLine(ControlChars.Tab & ControlChars.Tab & _
608: " Can repeat up to " & ca_cert_size & " times")
609: End If
610:
611: If build_mode = axtls.SSL_BUILD_FULL_MODE
612: Console.WriteLine(" -debug" & _
613: ControlChars.Tab & ControlChars.Tab & _
614: "- Print more output")
615: Console.WriteLine(" -state" & _
616: ControlChars.Tab & ControlChars.Tab & _
617: "- Show state messages")
618: Console.WriteLine(" -show-rsa" & _
619: ControlChars.Tab & "- Show RSA state")
620: End If
621:
622: Environment.Exit(1)
623: End Sub
624:
625: '
626: ' We've had some sort of command-line error. Print out the client options.
627: '
628: Private Sub print_client_options(ByVal build_mode As Integer, _
629: ByVal options As String)
630: Dim cert_size As Integer = SSLUtil.MaxCerts()
631: Dim ca_cert_size As Integer = SSLUtil.MaxCACerts()
632:
633: Console.WriteLine("unknown option " & options)
634:
635: If build_mode >= axtls.SSL_BUILD_ENABLE_CLIENT Then
636: Console.WriteLine("usage: s_client [args ...]")
637: Console.WriteLine(" -connect host:port - who to connect to " & _
638: "(default is localhost:4433)")
639: Console.WriteLine(" -verify" & ControlChars.Tab & _
640: "- turn on peer certificate verification")
641: Console.WriteLine(" -cert arg" & ControlChars.Tab & _
642: "- certificate file to use")
643: Console.WriteLine(ControlChars.Tab & ControlChars.Tab & _
644: " Can repeat up to " & cert_size & " times")
645: Console.WriteLine(" -key arg" & ControlChars.Tab & _
646: "- Private key file to use")
647: Console.WriteLine(" -CAfile arg" & ControlChars.Tab & _
648: "- Certificate authority")
649: Console.WriteLine(ControlChars.Tab & ControlChars.Tab & _
650: " Can repeat up to " & ca_cert_size & " times")
651: Console.WriteLine(" -quiet" & _
652: ControlChars.Tab & ControlChars.Tab & "- No client output")
653: Console.WriteLine(" -pass" & ControlChars.Tab & _
654: ControlChars.Tab & _
655: "- private key file pass phrase source")
656: Console.WriteLine(" -reconnect" & ControlChars.Tab & _
657: "- Drop and re-make the " & _
658: "connection with the same Session-ID")
659:
660: If build_mode = axtls.SSL_BUILD_FULL_MODE Then
661: Console.WriteLine(" -debug" & _
662: ControlChars.Tab & ControlChars.Tab & _
663: "- Print more output")
664: Console.WriteLine(" -state" & _
665: ControlChars.Tab & ControlChars.Tab & _
666: "- Show state messages")
667: Console.WriteLine(" -show-rsa" & ControlChars.Tab & _
668: "- Show RSA state")
669: End If
670: Else
671: Console.WriteLine("Change configuration to allow this feature")
672: End If
673:
674: Environment.Exit(1)
675: End Sub
676:
677: End Class
678:
679: Public Module MyMain
680: Function Main(ByVal args() As String) As Integer
681: Dim runner As axssl = New axssl()
682:
683: If args.Length = 1 And args(0) = "version" Then
684: Console.WriteLine("axssl.vbnet " & SSLUtil.Version())
685: Environment.Exit(0)
686: End If
687:
688: If args.Length < 1
689: runner.print_options("")
690: ElseIf args(0) <> "s_server" And args(0) <> "s_client"
691: runner.print_options(args(0))
692: End If
693:
694: Dim build_mode As Integer = SSLUtil.BuildMode()
695:
696: If args(0) = "s_server" Then
697: runner.do_server(build_mode, args)
698: Else
699: runner.do_client(build_mode, args)
700: End If
701: End Function
702: End Module
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