1 /* ssl/ssl_task.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 /* VMS */
60 /*
61 * DECnet object for servicing SSL. We accept the inbound and speak a
62 * simple protocol for multiplexing the 2 data streams (application and
63 * ssl data) over this logical link.
64 *
65 * Logical names:
66 * SSL_CIPHER Defines a list of cipher specifications the server
67 * will support in order of preference.
68 * SSL_SERVER_CERTIFICATE
69 * Points to PEM (privacy enhanced mail) file that
70 * contains the server certificate and private password.
71 * SYS$NET Logical created by netserver.exe as hook for completing
72 * DECnet logical link.
73 *
74 * Each NSP message sent over the DECnet link has the following structure:
75 * struct rpc_msg {
76 * char channel;
77 * char function;
78 * short length;
79 * char data[MAX_DATA];
80 * } msg;
81 *
82 * The channel field designates the virtual data stream this message applies
83 * to and is one of:
84 * A - Application data (payload).
85 * R - Remote client connection that initiated the SSL connection. Encrypted
86 * data is sent over this connection.
87 * G - General data, reserved for future use.
88 *
89 * The data streams are half-duplex read/write and have following functions:
90 * G - Get, requests that up to msg.length bytes of data be returned. The
91 * data is returned in the next 'C' function response that matches the
92 * requesting channel.
93 * P - Put, requests that the first msg.length bytes of msg.data be appended
94 * to the designated stream.
95 * C - Confirms a get or put. Every get and put will get a confirm response,
96 * you cannot initiate another function on a channel until the previous
97 * operation has been confirmed.
98 *
99 * The 2 channels may interleave their operations, for example:
100 * Server msg Client msg
101 * A, Get, 4092 ---->
102 * <---- R, get, 4092
103 * R, Confirm, {hello} ---->
104 * <---- R, put, {srv hello}
105 * R, Confirm, 0 ---->
106 * . (SSL handshake completed)
107 * . (read first app data).
108 * <---- A, confirm, {http data}
109 * A, Put, {http data} ---->
110 * <---- A, confirm, 0
111 *
112 * The length field is not permitted to be larger that 4092 bytes.
113 *
114 * Author: Dave Jones
115 * Date: 22-JUL-1996
116 */
117 #include <stdlib.h>
118 #include <stdio.h>
119 #include <iodef.h> /* VMS IO$_ definitions */
120 #include <descrip.h> /* VMS string descriptors */
121 extern int SYS$QIOW(), SYS$ASSIGN();
122 int LIB$INIT_TIMER(), LIB$SHOW_TIMER();
123
124 #include <string.h> /* from ssltest.c */
125 #include <errno.h>
126
127 #include "e_os.h"
128
129 #include <openssl/buffer.h>
130 #include <openssl/x509.h>
131 #include <openssl/ssl.h>
132 #include <openssl/err.h>
133
134 int MS_CALLBACK verify_callback(int ok, X509 *xs, X509 *xi, int depth,
135 int error);
136 BIO *bio_err=NULL;
137 BIO *bio_stdout=NULL;
138 BIO_METHOD *BIO_s_rtcp();
139
140 static char *cipher=NULL;
141 int verbose=1;
142 #ifdef FIONBIO
143 static int s_nbio=0;
144 #endif
145 #define TEST_SERVER_CERT "SSL_SERVER_CERTIFICATE"
146 /*************************************************************************/
147 struct rpc_msg { /* Should have member alignment inhibited */
148 char channel; /* 'A'-app data. 'R'-remote client 'G'-global */
149 char function; /* 'G'-get, 'P'-put, 'C'-confirm, 'X'-close */
150 unsigned short int length; /* Amount of data returned or max to return */
151 char data[4092]; /* variable data */
152 };
153 #define RPC_HDR_SIZE (sizeof(struct rpc_msg) - 4092)
154
155 static $DESCRIPTOR(sysnet, "SYS$NET");
156 typedef unsigned short io_channel;
157
158 struct io_status {
159 unsigned short status;
160 unsigned short count;
161 unsigned long stsval;
162 };
163 int doit(io_channel chan, SSL_CTX *s_ctx );
164 /*****************************************************************************/
165 /* Decnet I/O routines.
166 */
get(io_channel chan,char * buffer,int maxlen,int * length)167 static int get ( io_channel chan, char *buffer, int maxlen, int *length )
168 {
169 int status;
170 struct io_status iosb;
171 status = SYS$QIOW ( 0, chan, IO$_READVBLK, &iosb, 0, 0,
172 buffer, maxlen, 0, 0, 0, 0 );
173 if ( (status&1) == 1 ) status = iosb.status;
174 if ( (status&1) == 1 ) *length = iosb.count;
175 return status;
176 }
177
put(io_channel chan,char * buffer,int length)178 static int put ( io_channel chan, char *buffer, int length )
179 {
180 int status;
181 struct io_status iosb;
182 status = SYS$QIOW ( 0, chan, IO$_WRITEVBLK, &iosb, 0, 0,
183 buffer, length, 0, 0, 0, 0 );
184 if ( (status&1) == 1 ) status = iosb.status;
185 return status;
186 }
187 /***************************************************************************/
188 /* Handle operations on the 'G' channel.
189 */
general_request(io_channel chan,struct rpc_msg * msg,int length)190 static int general_request ( io_channel chan, struct rpc_msg *msg, int length )
191 {
192 return 48;
193 }
194 /***************************************************************************/
main(int argc,char ** argv)195 int main ( int argc, char **argv )
196 {
197 int status, length;
198 io_channel chan;
199 struct rpc_msg msg;
200
201 char *CApath=NULL,*CAfile=NULL;
202 int badop=0;
203 int ret=1;
204 int client_auth=0;
205 int server_auth=0;
206 SSL_CTX *s_ctx=NULL;
207 /*
208 * Confirm logical link with initiating client.
209 */
210 LIB$INIT_TIMER();
211 status = SYS$ASSIGN ( &sysnet, &chan, 0, 0, 0 );
212 printf("status of assign to SYS$NET: %d\n", status );
213 /*
214 * Initialize standard out and error files.
215 */
216 if (bio_err == NULL)
217 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
218 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE);
219 if (bio_stdout == NULL)
220 if ((bio_stdout=BIO_new(BIO_s_file())) != NULL)
221 BIO_set_fp(bio_stdout,stdout,BIO_NOCLOSE);
222 /*
223 * get the preferred cipher list and other initialization
224 */
225 if (cipher == NULL) cipher=getenv("SSL_CIPHER");
226 printf("cipher list: %s\n", cipher ? cipher : "{undefined}" );
227
228 SSL_load_error_strings();
229 OpenSSL_add_all_algorithms();
230
231 /* DRM, this was the original, but there is no such thing as SSLv2()
232 s_ctx=SSL_CTX_new(SSLv2());
233 */
234 s_ctx=SSL_CTX_new(SSLv2_server_method());
235
236 if (s_ctx == NULL) goto end;
237
238 SSL_CTX_use_certificate_file(s_ctx,TEST_SERVER_CERT,SSL_FILETYPE_PEM);
239 SSL_CTX_use_RSAPrivateKey_file(s_ctx,TEST_SERVER_CERT,SSL_FILETYPE_PEM);
240 printf("Loaded server certificate: '%s'\n", TEST_SERVER_CERT );
241
242 /*
243 * Take commands from client until bad status.
244 */
245 LIB$SHOW_TIMER();
246 status = doit ( chan, s_ctx );
247 LIB$SHOW_TIMER();
248 /*
249 * do final cleanup and exit.
250 */
251 end:
252 if (s_ctx != NULL) SSL_CTX_free(s_ctx);
253 LIB$SHOW_TIMER();
254 return 1;
255 }
256
doit(io_channel chan,SSL_CTX * s_ctx)257 int doit(io_channel chan, SSL_CTX *s_ctx )
258 {
259 int status, length, link_state;
260 struct rpc_msg msg;
261
262 SSL *s_ssl=NULL;
263 BIO *c_to_s=NULL;
264 BIO *s_to_c=NULL;
265 BIO *c_bio=NULL;
266 BIO *s_bio=NULL;
267 int i;
268 int done=0;
269
270 s_ssl=SSL_new(s_ctx);
271 if (s_ssl == NULL) goto err;
272
273 c_to_s=BIO_new(BIO_s_rtcp());
274 s_to_c=BIO_new(BIO_s_rtcp());
275 if ((s_to_c == NULL) || (c_to_s == NULL)) goto err;
276 /* original, DRM 24-SEP-1997
277 BIO_set_fd ( c_to_s, "", chan );
278 BIO_set_fd ( s_to_c, "", chan );
279 */
280 BIO_set_fd ( c_to_s, 0, chan );
281 BIO_set_fd ( s_to_c, 0, chan );
282
283 c_bio=BIO_new(BIO_f_ssl());
284 s_bio=BIO_new(BIO_f_ssl());
285 if ((c_bio == NULL) || (s_bio == NULL)) goto err;
286
287 SSL_set_accept_state(s_ssl);
288 SSL_set_bio(s_ssl,c_to_s,s_to_c);
289 BIO_set_ssl(s_bio,s_ssl,BIO_CLOSE);
290
291 /* We can always do writes */
292 printf("Begin doit main loop\n");
293 /*
294 * Link states: 0-idle, 1-read pending, 2-write pending, 3-closed.
295 */
296 for (link_state = 0; link_state < 3; ) {
297 /*
298 * Wait for remote end to request data action on A channel.
299 */
300 while ( link_state == 0 ) {
301 status = get ( chan, (char *) &msg, sizeof(msg), &length );
302 if ( (status&1) == 0 ) {
303 printf("Error in main loop get: %d\n", status );
304 link_state = 3;
305 break;
306 }
307 if ( length < RPC_HDR_SIZE ) {
308 printf("Error in main loop get size: %d\n", length );
309 break;
310 link_state = 3;
311 }
312 if ( msg.channel != 'A' ) {
313 printf("Error in main loop, unexpected channel: %c\n",
314 msg.channel );
315 break;
316 link_state = 3;
317 }
318 if ( msg.function == 'G' ) {
319 link_state = 1;
320 } else if ( msg.function == 'P' ) {
321 link_state = 2; /* write pending */
322 } else if ( msg.function == 'X' ) {
323 link_state = 3;
324 } else {
325 link_state = 3;
326 }
327 }
328 if ( link_state == 1 ) {
329 i = BIO_read ( s_bio, msg.data, msg.length );
330 if ( i < 0 ) link_state = 3;
331 else {
332 msg.channel = 'A';
333 msg.function = 'C'; /* confirm */
334 msg.length = i;
335 status = put ( chan, (char *) &msg, i+RPC_HDR_SIZE );
336 if ( (status&1) == 0 ) break;
337 link_state = 0;
338 }
339 } else if ( link_state == 2 ) {
340 i = BIO_write ( s_bio, msg.data, msg.length );
341 if ( i < 0 ) link_state = 3;
342 else {
343 msg.channel = 'A';
344 msg.function = 'C'; /* confirm */
345 msg.length = 0;
346 status = put ( chan, (char *) &msg, RPC_HDR_SIZE );
347 if ( (status&1) == 0 ) break;
348 link_state = 0;
349 }
350 }
351 }
352 fprintf(stdout,"DONE\n");
353 err:
354 /* We have to set the BIO's to NULL otherwise they will be
355 * free()ed twice. Once when th s_ssl is SSL_free()ed and
356 * again when c_ssl is SSL_free()ed.
357 * This is a hack required because s_ssl and c_ssl are sharing the same
358 * BIO structure and SSL_set_bio() and SSL_free() automatically
359 * BIO_free non NULL entries.
360 * You should not normally do this or be required to do this */
361 s_ssl->rbio=NULL;
362 s_ssl->wbio=NULL;
363
364 if (c_to_s != NULL) BIO_free(c_to_s);
365 if (s_to_c != NULL) BIO_free(s_to_c);
366 if (c_bio != NULL) BIO_free(c_bio);
367 if (s_bio != NULL) BIO_free(s_bio);
368 return(0);
369 }
370