2 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include "ssltestlib.h"
12 static int tls_dump_new(BIO *bi);
13 static int tls_dump_free(BIO *a);
14 static int tls_dump_read(BIO *b, char *out, int outl);
15 static int tls_dump_write(BIO *b, const char *in, int inl);
16 static long tls_dump_ctrl(BIO *b, int cmd, long num, void *ptr);
17 static int tls_dump_gets(BIO *bp, char *buf, int size);
18 static int tls_dump_puts(BIO *bp, const char *str);
20 /* Choose a sufficiently large type likely to be unused for this custom BIO */
21 # define BIO_TYPE_TLS_DUMP_FILTER (0x80 | BIO_TYPE_FILTER)
23 # define BIO_TYPE_MEMPACKET_TEST 0x81
25 static BIO_METHOD *method_tls_dump = NULL;
26 static BIO_METHOD *method_mempacket_test = NULL;
28 /* Note: Not thread safe! */
29 const BIO_METHOD *bio_f_tls_dump_filter(void)
31 if (method_tls_dump == NULL) {
32 method_tls_dump = BIO_meth_new(BIO_TYPE_TLS_DUMP_FILTER,
34 if ( method_tls_dump == NULL
35 || !BIO_meth_set_write(method_tls_dump, tls_dump_write)
36 || !BIO_meth_set_read(method_tls_dump, tls_dump_read)
37 || !BIO_meth_set_puts(method_tls_dump, tls_dump_puts)
38 || !BIO_meth_set_gets(method_tls_dump, tls_dump_gets)
39 || !BIO_meth_set_ctrl(method_tls_dump, tls_dump_ctrl)
40 || !BIO_meth_set_create(method_tls_dump, tls_dump_new)
41 || !BIO_meth_set_destroy(method_tls_dump, tls_dump_free))
44 return method_tls_dump;
47 void bio_f_tls_dump_filter_free(void)
49 BIO_meth_free(method_tls_dump);
52 static int tls_dump_new(BIO *bio)
58 static int tls_dump_free(BIO *bio)
65 static void copy_flags(BIO *bio)
68 BIO *next = BIO_next(bio);
70 flags = BIO_test_flags(next, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
71 BIO_clear_flags(bio, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
72 BIO_set_flags(bio, flags);
75 #define RECORD_CONTENT_TYPE 0
76 #define RECORD_VERSION_HI 1
77 #define RECORD_VERSION_LO 2
78 #define RECORD_EPOCH_HI 3
79 #define RECORD_EPOCH_LO 4
80 #define RECORD_SEQUENCE_START 5
81 #define RECORD_SEQUENCE_END 10
82 #define RECORD_LEN_HI 11
83 #define RECORD_LEN_LO 12
91 #define MSG_FRAG_OFF_HI 6
92 #define MSG_FRAG_OFF_MID 7
93 #define MSG_FRAG_OFF_LO 8
94 #define MSG_FRAG_LEN_HI 9
95 #define MSG_FRAG_LEN_MID 10
96 #define MSG_FRAG_LEN_LO 11
99 static void dump_data(const char *data, int len)
101 int rem, i, content, reclen, msglen, fragoff, fraglen, epoch;
104 printf("---- START OF PACKET ----\n");
107 rec = (unsigned char *)data;
112 printf("*---- START OF RECORD ----\n");
113 if (rem < DTLS1_RT_HEADER_LENGTH) {
114 printf("*---- RECORD TRUNCATED ----\n");
117 content = rec[RECORD_CONTENT_TYPE];
118 printf("** Record Content-type: %d\n", content);
119 printf("** Record Version: %02x%02x\n",
120 rec[RECORD_VERSION_HI], rec[RECORD_VERSION_LO]);
121 epoch = (rec[RECORD_EPOCH_HI] << 8) | rec[RECORD_EPOCH_LO];
122 printf("** Record Epoch: %d\n", epoch);
123 printf("** Record Sequence: ");
124 for (i = RECORD_SEQUENCE_START; i <= RECORD_SEQUENCE_END; i++)
125 printf("%02x", rec[i]);
126 reclen = (rec[RECORD_LEN_HI] << 8) | rec[RECORD_LEN_LO];
127 printf("\n** Record Length: %d\n", reclen);
129 /* Now look at message */
130 rec += DTLS1_RT_HEADER_LENGTH;
131 rem -= DTLS1_RT_HEADER_LENGTH;
132 if (content == SSL3_RT_HANDSHAKE) {
133 printf("**---- START OF HANDSHAKE MESSAGE FRAGMENT ----\n");
135 printf("**---- HANDSHAKE MESSAGE FRAGMENT ENCRYPTED ----\n");
136 } else if (rem < DTLS1_HM_HEADER_LENGTH
137 || reclen < DTLS1_HM_HEADER_LENGTH) {
138 printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
140 printf("*** Message Type: %d\n", rec[MSG_TYPE]);
141 msglen = (rec[MSG_LEN_HI] << 16) | (rec[MSG_LEN_MID] << 8)
143 printf("*** Message Length: %d\n", msglen);
144 printf("*** Message sequence: %d\n",
145 (rec[MSG_SEQ_HI] << 8) | rec[MSG_SEQ_LO]);
146 fragoff = (rec[MSG_FRAG_OFF_HI] << 16)
147 | (rec[MSG_FRAG_OFF_MID] << 8)
148 | rec[MSG_FRAG_OFF_LO];
149 printf("*** Message Fragment offset: %d\n", fragoff);
150 fraglen = (rec[MSG_FRAG_LEN_HI] << 16)
151 | (rec[MSG_FRAG_LEN_MID] << 8)
152 | rec[MSG_FRAG_LEN_LO];
153 printf("*** Message Fragment len: %d\n", fraglen);
154 if (fragoff + fraglen > msglen)
155 printf("***---- HANDSHAKE MESSAGE FRAGMENT INVALID ----\n");
156 else if(reclen < fraglen)
157 printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
159 printf("**---- END OF HANDSHAKE MESSAGE FRAGMENT ----\n");
163 printf("*---- RECORD TRUNCATED ----\n");
168 printf("*---- END OF RECORD ----\n");
171 printf("---- END OF PACKET ----\n\n");
175 static int tls_dump_read(BIO *bio, char *out, int outl)
178 BIO *next = BIO_next(bio);
180 ret = BIO_read(next, out, outl);
190 static int tls_dump_write(BIO *bio, const char *in, int inl)
193 BIO *next = BIO_next(bio);
195 ret = BIO_write(next, in, inl);
201 static long tls_dump_ctrl(BIO *bio, int cmd, long num, void *ptr)
204 BIO *next = BIO_next(bio);
214 ret = BIO_ctrl(next, cmd, num, ptr);
220 static int tls_dump_gets(BIO *bio, char *buf, int size)
222 /* We don't support this - not needed anyway */
226 static int tls_dump_puts(BIO *bio, const char *str)
228 return tls_dump_write(bio, str, strlen(str));
231 int create_ssl_ctx_pair(const SSL_METHOD *sm, const SSL_METHOD *cm,
232 SSL_CTX **sctx, SSL_CTX **cctx, char *certfile,
235 SSL_CTX *serverctx = NULL;
236 SSL_CTX *clientctx = NULL;
238 serverctx = SSL_CTX_new(sm);
239 clientctx = SSL_CTX_new(cm);
240 if (serverctx == NULL || clientctx == NULL) {
241 printf("Failed to create SSL_CTX\n");
245 if (SSL_CTX_use_certificate_file(serverctx, certfile,
246 SSL_FILETYPE_PEM) <= 0) {
247 printf("Failed to load server certificate\n");
250 if (SSL_CTX_use_PrivateKey_file(serverctx, privkeyfile,
251 SSL_FILETYPE_PEM) <= 0) {
252 printf("Failed to load server private key\n");
254 if (SSL_CTX_check_private_key(serverctx) <= 0) {
255 printf("Failed to check private key\n");
264 SSL_CTX_free(serverctx);
265 SSL_CTX_free(clientctx);
269 #define MAXLOOPS 100000
272 * NOTE: Transfers control of the BIOs - this function will free them on error
274 int create_ssl_connection(SSL_CTX *serverctx, SSL_CTX *clientctx, SSL **sssl,
275 SSL **cssl, BIO *s_to_c_fbio, BIO *c_to_s_fbio)
277 int retc = -1, rets = -1, err, abortctr = 0;
278 int clienterr = 0, servererr = 0;
279 SSL *serverssl, *clientssl;
280 BIO *s_to_c_bio = NULL, *c_to_s_bio = NULL;
283 serverssl = SSL_new(serverctx);
287 clientssl = SSL_new(clientctx);
291 if (serverssl == NULL || clientssl == NULL) {
292 printf("Failed to create SSL object\n");
296 s_to_c_bio = BIO_new(BIO_s_mem());
297 c_to_s_bio = BIO_new(BIO_s_mem());
298 if (s_to_c_bio == NULL || c_to_s_bio == NULL) {
299 printf("Failed to create mem BIOs\n");
303 if (s_to_c_fbio != NULL)
304 s_to_c_bio = BIO_push(s_to_c_fbio, s_to_c_bio);
305 if (c_to_s_fbio != NULL)
306 c_to_s_bio = BIO_push(c_to_s_fbio, c_to_s_bio);
307 if (s_to_c_bio == NULL || c_to_s_bio == NULL) {
308 printf("Failed to create chained BIOs\n");
312 /* Set Non-blocking IO behaviour */
313 BIO_set_mem_eof_return(s_to_c_bio, -1);
314 BIO_set_mem_eof_return(c_to_s_bio, -1);
316 /* Up ref these as we are passing them to two SSL objects */
317 BIO_up_ref(s_to_c_bio);
318 BIO_up_ref(c_to_s_bio);
320 SSL_set_bio(serverssl, c_to_s_bio, s_to_c_bio);
321 SSL_set_bio(clientssl, s_to_c_bio, c_to_s_bio);
323 /* BIOs will now be freed when SSL objects are freed */
324 s_to_c_bio = c_to_s_bio = NULL;
325 s_to_c_fbio = c_to_s_fbio = NULL;
328 err = SSL_ERROR_WANT_WRITE;
329 while (!clienterr && retc <= 0 && err == SSL_ERROR_WANT_WRITE) {
330 retc = SSL_connect(clientssl);
332 err = SSL_get_error(clientssl, retc);
335 if (!clienterr && retc <= 0 && err != SSL_ERROR_WANT_READ) {
336 printf("SSL_connect() failed %d, %d\n", retc, err);
340 err = SSL_ERROR_WANT_WRITE;
341 while (!servererr && rets <= 0 && err == SSL_ERROR_WANT_WRITE) {
342 rets = SSL_accept(serverssl);
344 err = SSL_get_error(serverssl, rets);
347 if (!servererr && rets <= 0 && err != SSL_ERROR_WANT_READ) {
348 printf("SSL_accept() failed %d, %d\n", retc, err);
351 if (clienterr && servererr)
353 if (++abortctr == MAXLOOPS) {
354 printf("No progress made\n");
357 } while (retc <=0 || rets <= 0);
367 BIO_free(s_to_c_bio);
368 BIO_free(s_to_c_fbio);
372 BIO_free(c_to_s_bio);
373 BIO_free(c_to_s_fbio);