source: EcnlProtoTool/trunk/openssl-1.1.0e/ssl/bio_ssl.c@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago

prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新
ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新
以下のOSSをアップデート
・mruby-1.3.0
・musl-1.1.18
・onigmo-6.1.3
・tcc-0.9.27
以下のOSSを追加
・openssl-1.1.0e
・curl-7.57.0
・zlib-1.2.11
以下のmrbgemsを追加
・iij/mruby-digest
・iij/mruby-env
・iij/mruby-errno
・iij/mruby-iijson
・iij/mruby-ipaddr
・iij/mruby-mock
・iij/mruby-require
・iij/mruby-tls-openssl
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 13.2 KB
Line 
1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include <errno.h>
14#include <openssl/crypto.h>
15#include "internal/bio.h"
16#include <openssl/err.h>
17#include "ssl_locl.h"
18
19static int ssl_write(BIO *h, const char *buf, int num);
20static int ssl_read(BIO *h, char *buf, int size);
21static int ssl_puts(BIO *h, const char *str);
22static long ssl_ctrl(BIO *h, int cmd, long arg1, void *arg2);
23static int ssl_new(BIO *h);
24static int ssl_free(BIO *data);
25static long ssl_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
26typedef struct bio_ssl_st {
27 SSL *ssl; /* The ssl handle :-) */
28 /* re-negotiate every time the total number of bytes is this size */
29 int num_renegotiates;
30 unsigned long renegotiate_count;
31 unsigned long byte_count;
32 unsigned long renegotiate_timeout;
33 unsigned long last_time;
34} BIO_SSL;
35
36static const BIO_METHOD methods_sslp = {
37 BIO_TYPE_SSL, "ssl",
38 ssl_write,
39 ssl_read,
40 ssl_puts,
41 NULL, /* ssl_gets, */
42 ssl_ctrl,
43 ssl_new,
44 ssl_free,
45 ssl_callback_ctrl,
46};
47
48const BIO_METHOD *BIO_f_ssl(void)
49{
50 return (&methods_sslp);
51}
52
53static int ssl_new(BIO *bi)
54{
55 BIO_SSL *bs = OPENSSL_zalloc(sizeof(*bs));
56
57 if (bs == NULL) {
58 BIOerr(BIO_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
59 return (0);
60 }
61 BIO_set_init(bi, 0);
62 BIO_set_data(bi, bs);
63 /* Clear all flags */
64 BIO_clear_flags(bi, ~0);
65
66 return 1;
67}
68
69static int ssl_free(BIO *a)
70{
71 BIO_SSL *bs;
72
73 if (a == NULL)
74 return (0);
75 bs = BIO_get_data(a);
76 if (bs->ssl != NULL)
77 SSL_shutdown(bs->ssl);
78 if (BIO_get_shutdown(a)) {
79 if (BIO_get_init(a))
80 SSL_free(bs->ssl);
81 /* Clear all flags */
82 BIO_clear_flags(a, ~0);
83 BIO_set_init(a, 0);
84 }
85 OPENSSL_free(bs);
86 return 1;
87}
88
89static int ssl_read(BIO *b, char *out, int outl)
90{
91 int ret = 1;
92 BIO_SSL *sb;
93 SSL *ssl;
94 int retry_reason = 0;
95 int r = 0;
96
97 if (out == NULL)
98 return (0);
99 sb = BIO_get_data(b);
100 ssl = sb->ssl;
101
102 BIO_clear_retry_flags(b);
103
104 ret = SSL_read(ssl, out, outl);
105
106 switch (SSL_get_error(ssl, ret)) {
107 case SSL_ERROR_NONE:
108 if (ret <= 0)
109 break;
110 if (sb->renegotiate_count > 0) {
111 sb->byte_count += ret;
112 if (sb->byte_count > sb->renegotiate_count) {
113 sb->byte_count = 0;
114 sb->num_renegotiates++;
115 SSL_renegotiate(ssl);
116 r = 1;
117 }
118 }
119 if ((sb->renegotiate_timeout > 0) && (!r)) {
120 unsigned long tm;
121
122 tm = (unsigned long)time(NULL);
123 if (tm > sb->last_time + sb->renegotiate_timeout) {
124 sb->last_time = tm;
125 sb->num_renegotiates++;
126 SSL_renegotiate(ssl);
127 }
128 }
129
130 break;
131 case SSL_ERROR_WANT_READ:
132 BIO_set_retry_read(b);
133 break;
134 case SSL_ERROR_WANT_WRITE:
135 BIO_set_retry_write(b);
136 break;
137 case SSL_ERROR_WANT_X509_LOOKUP:
138 BIO_set_retry_special(b);
139 retry_reason = BIO_RR_SSL_X509_LOOKUP;
140 break;
141 case SSL_ERROR_WANT_ACCEPT:
142 BIO_set_retry_special(b);
143 retry_reason = BIO_RR_ACCEPT;
144 break;
145 case SSL_ERROR_WANT_CONNECT:
146 BIO_set_retry_special(b);
147 retry_reason = BIO_RR_CONNECT;
148 break;
149 case SSL_ERROR_SYSCALL:
150 case SSL_ERROR_SSL:
151 case SSL_ERROR_ZERO_RETURN:
152 default:
153 break;
154 }
155
156 BIO_set_retry_reason(b, retry_reason);
157 return (ret);
158}
159
160static int ssl_write(BIO *b, const char *out, int outl)
161{
162 int ret, r = 0;
163 int retry_reason = 0;
164 SSL *ssl;
165 BIO_SSL *bs;
166
167 if (out == NULL)
168 return (0);
169 bs = BIO_get_data(b);
170 ssl = bs->ssl;
171
172 BIO_clear_retry_flags(b);
173
174 /*
175 * ret=SSL_do_handshake(ssl); if (ret > 0)
176 */
177 ret = SSL_write(ssl, out, outl);
178
179 switch (SSL_get_error(ssl, ret)) {
180 case SSL_ERROR_NONE:
181 if (ret <= 0)
182 break;
183 if (bs->renegotiate_count > 0) {
184 bs->byte_count += ret;
185 if (bs->byte_count > bs->renegotiate_count) {
186 bs->byte_count = 0;
187 bs->num_renegotiates++;
188 SSL_renegotiate(ssl);
189 r = 1;
190 }
191 }
192 if ((bs->renegotiate_timeout > 0) && (!r)) {
193 unsigned long tm;
194
195 tm = (unsigned long)time(NULL);
196 if (tm > bs->last_time + bs->renegotiate_timeout) {
197 bs->last_time = tm;
198 bs->num_renegotiates++;
199 SSL_renegotiate(ssl);
200 }
201 }
202 break;
203 case SSL_ERROR_WANT_WRITE:
204 BIO_set_retry_write(b);
205 break;
206 case SSL_ERROR_WANT_READ:
207 BIO_set_retry_read(b);
208 break;
209 case SSL_ERROR_WANT_X509_LOOKUP:
210 BIO_set_retry_special(b);
211 retry_reason = BIO_RR_SSL_X509_LOOKUP;
212 break;
213 case SSL_ERROR_WANT_CONNECT:
214 BIO_set_retry_special(b);
215 retry_reason = BIO_RR_CONNECT;
216 case SSL_ERROR_SYSCALL:
217 case SSL_ERROR_SSL:
218 default:
219 break;
220 }
221
222 BIO_set_retry_reason(b, retry_reason);
223 return ret;
224}
225
226static long ssl_ctrl(BIO *b, int cmd, long num, void *ptr)
227{
228 SSL **sslp, *ssl;
229 BIO_SSL *bs, *dbs;
230 BIO *dbio, *bio;
231 long ret = 1;
232 BIO *next;
233
234 bs = BIO_get_data(b);
235 next = BIO_next(b);
236 ssl = bs->ssl;
237 if ((ssl == NULL) && (cmd != BIO_C_SET_SSL))
238 return (0);
239 switch (cmd) {
240 case BIO_CTRL_RESET:
241 SSL_shutdown(ssl);
242
243 if (ssl->handshake_func == ssl->method->ssl_connect)
244 SSL_set_connect_state(ssl);
245 else if (ssl->handshake_func == ssl->method->ssl_accept)
246 SSL_set_accept_state(ssl);
247
248 if (!SSL_clear(ssl)) {
249 ret = 0;
250 break;
251 }
252
253 if (next != NULL)
254 ret = BIO_ctrl(next, cmd, num, ptr);
255 else if (ssl->rbio != NULL)
256 ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
257 else
258 ret = 1;
259 break;
260 case BIO_CTRL_INFO:
261 ret = 0;
262 break;
263 case BIO_C_SSL_MODE:
264 if (num) /* client mode */
265 SSL_set_connect_state(ssl);
266 else
267 SSL_set_accept_state(ssl);
268 break;
269 case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
270 ret = bs->renegotiate_timeout;
271 if (num < 60)
272 num = 5;
273 bs->renegotiate_timeout = (unsigned long)num;
274 bs->last_time = (unsigned long)time(NULL);
275 break;
276 case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
277 ret = bs->renegotiate_count;
278 if ((long)num >= 512)
279 bs->renegotiate_count = (unsigned long)num;
280 break;
281 case BIO_C_GET_SSL_NUM_RENEGOTIATES:
282 ret = bs->num_renegotiates;
283 break;
284 case BIO_C_SET_SSL:
285 if (ssl != NULL) {
286 ssl_free(b);
287 if (!ssl_new(b))
288 return 0;
289 }
290 BIO_set_shutdown(b, num);
291 ssl = (SSL *)ptr;
292 bs->ssl = ssl;
293 bio = SSL_get_rbio(ssl);
294 if (bio != NULL) {
295 if (next != NULL)
296 BIO_push(bio, next);
297 BIO_set_next(b, bio);
298 BIO_up_ref(bio);
299 }
300 BIO_set_init(b, 1);
301 break;
302 case BIO_C_GET_SSL:
303 if (ptr != NULL) {
304 sslp = (SSL **)ptr;
305 *sslp = ssl;
306 } else
307 ret = 0;
308 break;
309 case BIO_CTRL_GET_CLOSE:
310 ret = BIO_get_shutdown(b);
311 break;
312 case BIO_CTRL_SET_CLOSE:
313 BIO_set_shutdown(b, (int)num);
314 break;
315 case BIO_CTRL_WPENDING:
316 ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
317 break;
318 case BIO_CTRL_PENDING:
319 ret = SSL_pending(ssl);
320 if (ret == 0)
321 ret = BIO_pending(ssl->rbio);
322 break;
323 case BIO_CTRL_FLUSH:
324 BIO_clear_retry_flags(b);
325 ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
326 BIO_copy_next_retry(b);
327 break;
328 case BIO_CTRL_PUSH:
329 if ((next != NULL) && (next != ssl->rbio)) {
330 /*
331 * We are going to pass ownership of next to the SSL object...but
332 * we don't own a reference to pass yet - so up ref
333 */
334 BIO_up_ref(next);
335 SSL_set_bio(ssl, next, next);
336 }
337 break;
338 case BIO_CTRL_POP:
339 /* Only detach if we are the BIO explicitly being popped */
340 if (b == ptr) {
341 /* This will clear the reference we obtained during push */
342 SSL_set_bio(ssl, NULL, NULL);
343 }
344 break;
345 case BIO_C_DO_STATE_MACHINE:
346 BIO_clear_retry_flags(b);
347
348 BIO_set_retry_reason(b, 0);
349 ret = (int)SSL_do_handshake(ssl);
350
351 switch (SSL_get_error(ssl, (int)ret)) {
352 case SSL_ERROR_WANT_READ:
353 BIO_set_flags(b, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);
354 break;
355 case SSL_ERROR_WANT_WRITE:
356 BIO_set_flags(b, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);
357 break;
358 case SSL_ERROR_WANT_CONNECT:
359 BIO_set_flags(b, BIO_FLAGS_IO_SPECIAL | BIO_FLAGS_SHOULD_RETRY);
360 BIO_set_retry_reason(b, BIO_get_retry_reason(next));
361 break;
362 case SSL_ERROR_WANT_X509_LOOKUP:
363 BIO_set_retry_special(b);
364 BIO_set_retry_reason(b, BIO_RR_SSL_X509_LOOKUP);
365 break;
366 default:
367 break;
368 }
369 break;
370 case BIO_CTRL_DUP:
371 dbio = (BIO *)ptr;
372 dbs = BIO_get_data(dbio);
373 SSL_free(dbs->ssl);
374 dbs->ssl = SSL_dup(ssl);
375 dbs->num_renegotiates = bs->num_renegotiates;
376 dbs->renegotiate_count = bs->renegotiate_count;
377 dbs->byte_count = bs->byte_count;
378 dbs->renegotiate_timeout = bs->renegotiate_timeout;
379 dbs->last_time = bs->last_time;
380 ret = (dbs->ssl != NULL);
381 break;
382 case BIO_C_GET_FD:
383 ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
384 break;
385 case BIO_CTRL_SET_CALLBACK:
386 {
387#if 0 /* FIXME: Should this be used? -- Richard
388 * Levitte */
389 SSLerr(SSL_F_SSL_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
390 ret = -1;
391#else
392 ret = 0;
393#endif
394 }
395 break;
396 case BIO_CTRL_GET_CALLBACK:
397 {
398 void (**fptr) (const SSL *xssl, int type, int val);
399
400 fptr = (void (**)(const SSL *xssl, int type, int val))ptr;
401 *fptr = SSL_get_info_callback(ssl);
402 }
403 break;
404 default:
405 ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
406 break;
407 }
408 return (ret);
409}
410
411static long ssl_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
412{
413 SSL *ssl;
414 BIO_SSL *bs;
415 long ret = 1;
416
417 bs = BIO_get_data(b);
418 ssl = bs->ssl;
419 switch (cmd) {
420 case BIO_CTRL_SET_CALLBACK:
421 {
422 /*
423 * FIXME: setting this via a completely different prototype seems
424 * like a crap idea
425 */
426 SSL_set_info_callback(ssl, (void (*)(const SSL *, int, int))fp);
427 }
428 break;
429 default:
430 ret = BIO_callback_ctrl(ssl->rbio, cmd, fp);
431 break;
432 }
433 return (ret);
434}
435
436static int ssl_puts(BIO *bp, const char *str)
437{
438 int n, ret;
439
440 n = strlen(str);
441 ret = BIO_write(bp, str, n);
442 return (ret);
443}
444
445BIO *BIO_new_buffer_ssl_connect(SSL_CTX *ctx)
446{
447#ifndef OPENSSL_NO_SOCK
448 BIO *ret = NULL, *buf = NULL, *ssl = NULL;
449
450 if ((buf = BIO_new(BIO_f_buffer())) == NULL)
451 return (NULL);
452 if ((ssl = BIO_new_ssl_connect(ctx)) == NULL)
453 goto err;
454 if ((ret = BIO_push(buf, ssl)) == NULL)
455 goto err;
456 return (ret);
457 err:
458 BIO_free(buf);
459 BIO_free(ssl);
460#endif
461 return (NULL);
462}
463
464BIO *BIO_new_ssl_connect(SSL_CTX *ctx)
465{
466#ifndef OPENSSL_NO_SOCK
467 BIO *ret = NULL, *con = NULL, *ssl = NULL;
468
469 if ((con = BIO_new(BIO_s_connect())) == NULL)
470 return (NULL);
471 if ((ssl = BIO_new_ssl(ctx, 1)) == NULL)
472 goto err;
473 if ((ret = BIO_push(ssl, con)) == NULL)
474 goto err;
475 return (ret);
476 err:
477 BIO_free(con);
478#endif
479 return (NULL);
480}
481
482BIO *BIO_new_ssl(SSL_CTX *ctx, int client)
483{
484 BIO *ret;
485 SSL *ssl;
486
487 if ((ret = BIO_new(BIO_f_ssl())) == NULL)
488 return (NULL);
489 if ((ssl = SSL_new(ctx)) == NULL) {
490 BIO_free(ret);
491 return (NULL);
492 }
493 if (client)
494 SSL_set_connect_state(ssl);
495 else
496 SSL_set_accept_state(ssl);
497
498 BIO_set_ssl(ret, ssl, BIO_CLOSE);
499 return (ret);
500}
501
502int BIO_ssl_copy_session_id(BIO *t, BIO *f)
503{
504 BIO_SSL *tdata, *fdata;
505 t = BIO_find_type(t, BIO_TYPE_SSL);
506 f = BIO_find_type(f, BIO_TYPE_SSL);
507 if ((t == NULL) || (f == NULL))
508 return 0;
509 tdata = BIO_get_data(t);
510 fdata = BIO_get_data(f);
511 if ((tdata->ssl == NULL) || (fdata->ssl == NULL))
512 return (0);
513 if (!SSL_copy_session_id(tdata->ssl, (fdata->ssl)))
514 return 0;
515 return (1);
516}
517
518void BIO_ssl_shutdown(BIO *b)
519{
520 SSL *s;
521
522 b = BIO_find_type(b, BIO_TYPE_SSL);
523 if (b == NULL)
524 return;
525
526 s = BIO_get_data(b);
527 SSL_shutdown(s);
528}
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