2 * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL licenses, (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 * https://www.openssl.org/source/license.html
8 * or in the file LICENSE in the source distribution.
12 #include <openssl/ssl.h>
13 #include <openssl/bio.h>
14 #include <openssl/err.h>
16 #include "../ssl/packet_locl.h"
18 /* Should we fragment records or not? 0 = no, !0 = yes*/
19 static int fragment = 0;
21 static int async_new(BIO *bi);
22 static int async_free(BIO *a);
23 static int async_read(BIO *b, char *out, int outl);
24 static int async_write(BIO *b, const char *in, int inl);
25 static long async_ctrl(BIO *b, int cmd, long num, void *ptr);
26 static int async_gets(BIO *bp, char *buf, int size);
27 static int async_puts(BIO *bp, const char *str);
29 /* Choose a sufficiently large type likely to be unused for this custom BIO */
30 # define BIO_TYPE_ASYNC_FILTER (0x80 | BIO_TYPE_FILTER)
32 static BIO_METHOD *methods_async = NULL;
39 static const BIO_METHOD *bio_f_async_filter()
41 if (methods_async == NULL) {
42 methods_async = BIO_meth_new(BIO_TYPE_ASYNC_FILTER, "Async filter");
43 if ( methods_async == NULL
44 || !BIO_meth_set_write(methods_async, async_write)
45 || !BIO_meth_set_read(methods_async, async_read)
46 || !BIO_meth_set_puts(methods_async, async_puts)
47 || !BIO_meth_set_gets(methods_async, async_gets)
48 || !BIO_meth_set_ctrl(methods_async, async_ctrl)
49 || !BIO_meth_set_create(methods_async, async_new)
50 || !BIO_meth_set_destroy(methods_async, async_free))
56 static int async_new(BIO *bio)
58 struct async_ctrs *ctrs;
60 ctrs = OPENSSL_zalloc(sizeof(struct async_ctrs));
64 BIO_set_data(bio, ctrs);
69 static int async_free(BIO *bio)
71 struct async_ctrs *ctrs;
75 ctrs = BIO_get_data(bio);
77 BIO_set_data(bio, NULL);
83 static int async_read(BIO *bio, char *out, int outl)
85 struct async_ctrs *ctrs;
87 BIO *next = BIO_next(bio);
94 ctrs = BIO_get_data(bio);
96 BIO_clear_retry_flags(bio);
99 ret = BIO_read(next, out, 1);
100 if (ret <= 0 && BIO_should_read(next))
101 BIO_set_retry_read(bio);
105 BIO_set_retry_read(bio);
111 #define MIN_RECORD_LEN 6
113 #define CONTENTTYPEPOS 0
114 #define VERSIONHIPOS 1
115 #define VERSIONLOPOS 2
118 static int async_write(BIO *bio, const char *in, int inl)
120 struct async_ctrs *ctrs;
123 BIO *next = BIO_next(bio);
130 ctrs = BIO_get_data(bio);
132 BIO_clear_retry_flags(bio);
134 if (ctrs->wctr > 0) {
139 if (!PACKET_buf_init(&pkt, (const unsigned char *)in, inl))
142 while (PACKET_remaining(&pkt) > 0) {
144 unsigned int contenttype, versionhi, versionlo, data;
146 if ( !PACKET_get_1(&pkt, &contenttype)
147 || !PACKET_get_1(&pkt, &versionhi)
148 || !PACKET_get_1(&pkt, &versionlo)
149 || !PACKET_get_length_prefixed_2(&pkt, &payload))
152 /* Pretend we wrote out the record header */
153 written += SSL3_RT_HEADER_LENGTH;
155 while (PACKET_get_1(&payload, &data)) {
156 /* Create a new one byte long record for each byte in the
157 * record in the input buffer
159 char smallrec[MIN_RECORD_LEN] = {
160 0, /* Content type */
168 smallrec[CONTENTTYPEPOS] = contenttype;
169 smallrec[VERSIONHIPOS] = versionhi;
170 smallrec[VERSIONLOPOS] = versionlo;
171 smallrec[DATAPOS] = data;
172 ret = BIO_write(next, smallrec, MIN_RECORD_LEN);
178 * We can't fragment anything after the CCS, otherwise we
179 * get a bad record MAC
181 if (contenttype == SSL3_RT_CHANGE_CIPHER_SPEC) {
187 /* Write any data we have left after fragmenting */
189 if ((int)written < inl) {
190 ret = BIO_write(next, in + written , inl - written);
193 if (ret <= 0 && BIO_should_write(next))
194 BIO_set_retry_write(bio);
199 BIO_set_retry_write(bio);
205 static long async_ctrl(BIO *bio, int cmd, long num, void *ptr)
208 BIO *next = BIO_next(bio);
218 ret = BIO_ctrl(next, cmd, num, ptr);
224 static int async_gets(BIO *bio, char *buf, int size)
226 /* We don't support this - not needed anyway */
230 static int async_puts(BIO *bio, const char *str)
232 return async_write(bio, str, strlen(str));
235 #define MAXLOOPS 100000
237 int main(int argc, char *argv[])
239 SSL_CTX *serverctx = NULL, *clientctx = NULL;
240 SSL *serverssl = NULL, *clientssl = NULL;
241 BIO *s_to_c_bio = NULL, *c_to_s_bio = NULL;
242 BIO *s_to_c_fbio = NULL, *c_to_s_fbio = NULL;
243 int retc = -1, rets = -1, err, abortctr;
246 CRYPTO_set_mem_debug(1);
247 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
250 printf("Invalid argument count\n");
254 serverctx = SSL_CTX_new(TLS_server_method());
255 clientctx = SSL_CTX_new(TLS_client_method());
256 if (serverctx == NULL || clientctx == NULL) {
257 printf("Failed to create SSL_CTX\n");
261 if (SSL_CTX_use_certificate_file(serverctx, argv[1],
262 SSL_FILETYPE_PEM) <= 0) {
263 printf("Failed to load server certificate\n");
266 if (SSL_CTX_use_PrivateKey_file(serverctx, argv[2],
267 SSL_FILETYPE_PEM) <= 0) {
268 printf("Failed to load server private key\n");
270 if (SSL_CTX_check_private_key(serverctx) <= 0) {
271 printf("Failed to check private key\n");
276 * We do 2 test runs. The first time around we just do a normal handshake
277 * with lots of async io going on. The second time around we also break up
278 * all records so that the content is only one byte length (up until the
281 for (test = 1; test < 3; test++) {
287 serverssl = SSL_new(serverctx);
288 clientssl = SSL_new(clientctx);
289 if (serverssl == NULL || clientssl == NULL) {
290 printf("Failed to create SSL object\n");
294 s_to_c_bio = BIO_new(BIO_s_mem());
295 c_to_s_bio = BIO_new(BIO_s_mem());
296 if (s_to_c_bio == NULL || c_to_s_bio == NULL) {
297 printf("Failed to create mem BIOs\n");
301 s_to_c_fbio = BIO_new(bio_f_async_filter());
302 c_to_s_fbio = BIO_new(bio_f_async_filter());
303 if (s_to_c_fbio == NULL || c_to_s_fbio == NULL) {
304 printf("Failed to create filter BIOs\n");
308 s_to_c_bio = BIO_push(s_to_c_fbio, s_to_c_bio);
309 c_to_s_bio = BIO_push(c_to_s_fbio, c_to_s_bio);
310 if (s_to_c_bio == NULL || c_to_s_bio == NULL) {
311 printf("Failed to create chained BIOs\n");
315 /* Set Non-blocking IO behaviour */
316 BIO_set_mem_eof_return(s_to_c_bio, -1);
317 BIO_set_mem_eof_return(c_to_s_bio, -1);
319 /* Up ref these as we are passing them to two SSL objects */
320 BIO_up_ref(s_to_c_bio);
321 BIO_up_ref(c_to_s_bio);
323 SSL_set_bio(serverssl, c_to_s_bio, s_to_c_bio);
324 SSL_set_bio(clientssl, s_to_c_bio, c_to_s_bio);
327 err = SSL_ERROR_WANT_WRITE;
328 while (retc <= 0 && err == SSL_ERROR_WANT_WRITE) {
329 retc = SSL_connect(clientssl);
331 err = SSL_get_error(clientssl, retc);
334 if (retc <= 0 && err != SSL_ERROR_WANT_READ) {
335 printf("Test %d failed: SSL_connect() failed %d, %d\n",
340 err = SSL_ERROR_WANT_WRITE;
341 while (rets <= 0 && err == SSL_ERROR_WANT_WRITE) {
342 rets = SSL_accept(serverssl);
344 err = SSL_get_error(serverssl, rets);
347 if (rets <= 0 && err != SSL_ERROR_WANT_READ) {
348 printf("Test %d failed: SSL_accept() failed %d, %d\n",
352 if (++abortctr == MAXLOOPS) {
353 printf("Test %d failed: No progress made\n", test);
356 } while (retc <=0 || rets <= 0);
358 /* Also frees the BIOs */
361 clientssl = serverssl = NULL;
364 printf("Test success\n");
367 if (retc <= 0 || rets <= 0)
368 ERR_print_errors_fp(stderr);
372 SSL_CTX_free(clientctx);
373 SSL_CTX_free(serverctx);
375 # ifndef OPENSSL_NO_CRYPTO_MDEBUG
376 CRYPTO_mem_leaks_fp(stderr);
379 return (retc > 0 && rets > 0) ? 0 : 1;