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Commit | Line | Data |
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99e1cc7b TM |
1 | /* |
2 | * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the Apache License 2.0 (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 <openssl/macros.h> | |
11 | #include <openssl/objects.h> | |
22d53c88 HL |
12 | #include <openssl/sslerr.h> |
13 | #include <crypto/rand.h> | |
99e1cc7b | 14 | #include "quic_local.h" |
2723d705 | 15 | #include "internal/quic_tls.h" |
22d53c88 HL |
16 | #include "internal/quic_rx_depack.h" |
17 | #include "internal/quic_error.h" | |
18 | #include "internal/time.h" | |
99e1cc7b | 19 | |
faa3a180 HL |
20 | typedef struct qctx_st QCTX; |
21 | ||
cb5c208b | 22 | static void aon_write_finish(QUIC_XSO *xso); |
23c04709 | 23 | static int create_channel(QUIC_CONNECTION *qc); |
21c80696 | 24 | static QUIC_XSO *create_xso_from_stream(QUIC_CONNECTION *qc, QUIC_STREAM *qs); |
faa3a180 HL |
25 | static int qc_try_create_default_xso_for_write(QCTX *ctx); |
26 | static int qc_wait_for_default_xso_for_read(QCTX *ctx); | |
8b7be3aa HL |
27 | static void quic_lock(QUIC_CONNECTION *qc); |
28 | static void quic_unlock(QUIC_CONNECTION *qc); | |
faa3a180 | 29 | static int quic_do_handshake(QCTX *ctx); |
995ff282 HL |
30 | static void qc_update_reject_policy(QUIC_CONNECTION *qc); |
31 | static void qc_touch_default_xso(QUIC_CONNECTION *qc); | |
32 | static void qc_set_default_xso(QUIC_CONNECTION *qc, QUIC_XSO *xso, int touch); | |
9cab4bd5 HL |
33 | static void qc_set_default_xso_keep_ref(QUIC_CONNECTION *qc, QUIC_XSO *xso, |
34 | int touch, QUIC_XSO **old_xso); | |
faa3a180 | 35 | static SSL *quic_conn_stream_new(QCTX *ctx, uint64_t flags, int need_lock); |
22d53c88 HL |
36 | |
37 | /* | |
38 | * QUIC Front-End I/O API: Common Utilities | |
39 | * ======================================== | |
40 | */ | |
41 | ||
42 | /* | |
43 | * Block until a predicate is met. | |
44 | * | |
45 | * Precondition: Must have a channel. | |
d7b1fadd | 46 | * Precondition: Must hold channel lock (unchecked). |
22d53c88 | 47 | */ |
d7b1fadd | 48 | QUIC_NEEDS_LOCK |
22d53c88 HL |
49 | static int block_until_pred(QUIC_CONNECTION *qc, |
50 | int (*pred)(void *arg), void *pred_arg, | |
51 | uint32_t flags) | |
52 | { | |
53 | QUIC_REACTOR *rtor; | |
54 | ||
55 | assert(qc->ch != NULL); | |
56 | ||
57 | rtor = ossl_quic_channel_get_reactor(qc->ch); | |
c019e1ef | 58 | return ossl_quic_reactor_block_until_pred(rtor, pred, pred_arg, flags, |
4847599b | 59 | qc->mutex); |
22d53c88 HL |
60 | } |
61 | ||
e3e9794a HL |
62 | static OSSL_TIME get_time(QUIC_CONNECTION *qc) |
63 | { | |
64 | if (qc->override_now_cb != NULL) | |
65 | return qc->override_now_cb(qc->override_now_cb_arg); | |
66 | else | |
67 | return ossl_time_now(); | |
68 | } | |
69 | ||
70 | static OSSL_TIME get_time_cb(void *arg) | |
71 | { | |
72 | QUIC_CONNECTION *qc = arg; | |
73 | ||
74 | return get_time(qc); | |
75 | } | |
76 | ||
faa3a180 HL |
77 | /* |
78 | * QCTX is a utility structure which provides information we commonly wish to | |
79 | * unwrap upon an API call being dispatched to us, namely: | |
80 | * | |
81 | * - a pointer to the QUIC_CONNECTION (regardless of whether a QCSO or QSSO | |
82 | * was passed); | |
83 | * - a pointer to any applicable QUIC_XSO (e.g. if a QSSO was passed, or if | |
84 | * a QCSO with a default stream was passed); | |
85 | * - whether a QSSO was passed (xso == NULL must not be used to determine this | |
86 | * because it may be non-NULL when a QCSO is passed if that QCSO has a | |
87 | * default stream). | |
88 | */ | |
89 | struct qctx_st { | |
90 | QUIC_CONNECTION *qc; | |
91 | QUIC_XSO *xso; | |
92 | int is_stream; | |
93 | }; | |
94 | ||
22d53c88 HL |
95 | /* |
96 | * Raise a 'normal' error, meaning one that can be reported via SSL_get_error() | |
faa3a180 HL |
97 | * rather than via ERR. Note that normal errors must always be raised while |
98 | * holding a lock. | |
22d53c88 | 99 | */ |
faa3a180 HL |
100 | QUIC_NEEDS_LOCK |
101 | static int quic_raise_normal_error(QCTX *ctx, | |
22d53c88 HL |
102 | int err) |
103 | { | |
faa3a180 HL |
104 | if (ctx->is_stream) |
105 | ctx->xso->last_error = err; | |
106 | else | |
107 | ctx->qc->last_error = err; | |
108 | ||
22d53c88 HL |
109 | return 0; |
110 | } | |
111 | ||
112 | /* | |
113 | * Raise a 'non-normal' error, meaning any error that is not reported via | |
114 | * SSL_get_error() and must be reported via ERR. | |
e88cdb8e HL |
115 | * |
116 | * qc should be provided if available. In exceptional circumstances when qc is | |
117 | * not known NULL may be passed. This should generally only happen when an | |
118 | * expect_...() function defined below fails, which generally indicates a | |
119 | * dispatch error or caller error. | |
faa3a180 HL |
120 | * |
121 | * ctx should be NULL if the connection lock is not held. | |
22d53c88 | 122 | */ |
faa3a180 | 123 | static int quic_raise_non_normal_error(QCTX *ctx, |
22d53c88 HL |
124 | const char *file, |
125 | int line, | |
126 | const char *func, | |
127 | int reason, | |
128 | const char *fmt, | |
129 | ...) | |
130 | { | |
131 | va_list args; | |
132 | ||
133 | ERR_new(); | |
134 | ERR_set_debug(file, line, func); | |
135 | ||
136 | va_start(args, fmt); | |
137 | ERR_vset_error(ERR_LIB_SSL, reason, fmt, args); | |
138 | va_end(args); | |
139 | ||
faa3a180 HL |
140 | if (ctx != NULL) { |
141 | if (ctx->is_stream && ctx->xso != NULL) | |
142 | ctx->xso->last_error = SSL_ERROR_SSL; | |
143 | else if (!ctx->is_stream && ctx->qc != NULL) | |
144 | ctx->qc->last_error = SSL_ERROR_SSL; | |
145 | } | |
e88cdb8e | 146 | |
22d53c88 HL |
147 | return 0; |
148 | } | |
149 | ||
faa3a180 HL |
150 | #define QUIC_RAISE_NORMAL_ERROR(ctx, err) \ |
151 | quic_raise_normal_error((ctx), (err)) | |
22d53c88 | 152 | |
faa3a180 HL |
153 | #define QUIC_RAISE_NON_NORMAL_ERROR(ctx, reason, msg) \ |
154 | quic_raise_non_normal_error((ctx), \ | |
22d53c88 HL |
155 | OPENSSL_FILE, OPENSSL_LINE, \ |
156 | OPENSSL_FUNC, \ | |
157 | (reason), \ | |
158 | (msg)) | |
159 | ||
e88cdb8e HL |
160 | /* |
161 | * Given a QCSO or QSSO, initialises a QCTX, determining the contextually | |
162 | * applicable QUIC_CONNECTION pointer and, if applicable, QUIC_XSO pointer. | |
163 | * | |
164 | * After this returns 1, all fields of the passed QCTX are initialised. | |
165 | * Returns 0 on failure. This function is intended to be used to provide API | |
166 | * semantics and as such, it invokes QUIC_RAISE_NON_NORMAL_ERROR() on failure. | |
22d53c88 | 167 | */ |
e88cdb8e | 168 | static int expect_quic(const SSL *s, QCTX *ctx) |
22d53c88 | 169 | { |
e88cdb8e HL |
170 | QUIC_CONNECTION *qc; |
171 | QUIC_XSO *xso; | |
172 | ||
173 | ctx->qc = NULL; | |
174 | ctx->xso = NULL; | |
175 | ctx->is_stream = 0; | |
176 | ||
177 | if (s == NULL) | |
8b7be3aa | 178 | return QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_PASSED_NULL_PARAMETER, NULL); |
22d53c88 | 179 | |
e88cdb8e HL |
180 | switch (s->type) { |
181 | case SSL_TYPE_QUIC_CONNECTION: | |
182 | qc = (QUIC_CONNECTION *)s; | |
183 | ctx->qc = qc; | |
cb5c208b | 184 | ctx->xso = qc->default_xso; |
e88cdb8e HL |
185 | ctx->is_stream = 0; |
186 | return 1; | |
187 | ||
188 | case SSL_TYPE_QUIC_XSO: | |
189 | xso = (QUIC_XSO *)s; | |
cb5c208b | 190 | ctx->qc = xso->conn; |
e88cdb8e HL |
191 | ctx->xso = xso; |
192 | ctx->is_stream = 1; | |
193 | return 1; | |
194 | ||
195 | default: | |
196 | return QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL); | |
197 | } | |
198 | } | |
199 | ||
200 | /* | |
201 | * Like expect_quic(), but requires a QUIC_XSO be contextually available. In | |
202 | * other words, requires that the passed QSO be a QSSO or a QCSO with a default | |
203 | * stream. | |
21c80696 HL |
204 | * |
205 | * remote_init determines if we expect the default XSO to be remotely created or | |
206 | * not. If it is -1, do not instantiate a default XSO if one does not yet exist. | |
8b7be3aa HL |
207 | * |
208 | * Channel mutex is acquired and retained on success. | |
e88cdb8e | 209 | */ |
8b7be3aa HL |
210 | QUIC_ACQUIRES_LOCK |
211 | static int ossl_unused expect_quic_with_stream_lock(const SSL *s, int remote_init, | |
212 | QCTX *ctx) | |
e88cdb8e HL |
213 | { |
214 | if (!expect_quic(s, ctx)) | |
215 | return 0; | |
216 | ||
8b7be3aa HL |
217 | quic_lock(ctx->qc); |
218 | ||
21c80696 | 219 | if (ctx->xso == NULL && remote_init >= 0) { |
8b7be3aa | 220 | if (ossl_quic_channel_is_term_any(ctx->qc->ch)) { |
faa3a180 | 221 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
8b7be3aa HL |
222 | goto err; |
223 | } | |
224 | ||
225 | /* If we haven't finished the handshake, try to advance it. */ | |
faa3a180 | 226 | if (quic_do_handshake(ctx) < 1) |
8b7be3aa HL |
227 | /* ossl_quic_do_handshake raised error here */ |
228 | goto err; | |
229 | ||
230 | if (remote_init == 0) { | |
faa3a180 | 231 | if (!qc_try_create_default_xso_for_write(ctx)) |
8b7be3aa HL |
232 | goto err; |
233 | } else { | |
faa3a180 | 234 | if (!qc_wait_for_default_xso_for_read(ctx)) |
8b7be3aa HL |
235 | goto err; |
236 | } | |
237 | ||
21c80696 HL |
238 | ctx->xso = ctx->qc->default_xso; |
239 | } | |
240 | ||
8b7be3aa | 241 | if (ctx->xso == NULL) { |
faa3a180 | 242 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_NO_STREAM, NULL); |
8b7be3aa HL |
243 | goto err; |
244 | } | |
245 | ||
246 | return 1; /* lock held */ | |
e88cdb8e | 247 | |
8b7be3aa HL |
248 | err: |
249 | quic_unlock(ctx->qc); | |
250 | return 0; | |
e88cdb8e | 251 | } |
22d53c88 | 252 | |
e88cdb8e HL |
253 | /* |
254 | * Like expect_quic(), but fails if called on a QUIC_XSO. ctx->xso may still | |
255 | * be non-NULL if the QCSO has a default stream. | |
256 | */ | |
23c04709 | 257 | static int ossl_unused expect_quic_conn_only(const SSL *s, QCTX *ctx) |
e88cdb8e HL |
258 | { |
259 | if (!expect_quic(s, ctx)) | |
260 | return 0; | |
261 | ||
262 | if (ctx->is_stream) | |
faa3a180 | 263 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_CONN_USE_ONLY, NULL); |
e88cdb8e HL |
264 | |
265 | return 1; | |
22d53c88 HL |
266 | } |
267 | ||
4847599b HL |
268 | /* |
269 | * Ensures that the channel mutex is held for a method which touches channel | |
270 | * state. | |
271 | * | |
272 | * Precondition: Channel mutex is not held (unchecked) | |
273 | */ | |
20f45743 | 274 | static void quic_lock(QUIC_CONNECTION *qc) |
4847599b | 275 | { |
629b408c | 276 | #if defined(OPENSSL_THREADS) |
ffce2946 | 277 | ossl_crypto_mutex_lock(qc->mutex); |
629b408c | 278 | #endif |
4847599b HL |
279 | } |
280 | ||
281 | /* Precondition: Channel mutex is held (unchecked) */ | |
282 | QUIC_NEEDS_LOCK | |
283 | static void quic_unlock(QUIC_CONNECTION *qc) | |
284 | { | |
629b408c | 285 | #if defined(OPENSSL_THREADS) |
ffce2946 | 286 | ossl_crypto_mutex_unlock(qc->mutex); |
629b408c | 287 | #endif |
4847599b HL |
288 | } |
289 | ||
290 | ||
22d53c88 HL |
291 | /* |
292 | * QUIC Front-End I/O API: Initialization | |
293 | * ====================================== | |
294 | * | |
295 | * SSL_new => ossl_quic_new | |
296 | * ossl_quic_init | |
297 | * SSL_reset => ossl_quic_reset | |
298 | * SSL_clear => ossl_quic_clear | |
299 | * ossl_quic_deinit | |
300 | * SSL_free => ossl_quic_free | |
301 | * | |
f0d9757c HL |
302 | * SSL_set_options => ossl_quic_set_options |
303 | * SSL_get_options => ossl_quic_get_options | |
304 | * SSL_clear_options => ossl_quic_clear_options | |
305 | * | |
22d53c88 HL |
306 | */ |
307 | ||
308 | /* SSL_new */ | |
38b051a1 TM |
309 | SSL *ossl_quic_new(SSL_CTX *ctx) |
310 | { | |
22d53c88 HL |
311 | QUIC_CONNECTION *qc = NULL; |
312 | SSL *ssl_base = NULL; | |
a7f41885 | 313 | SSL_CONNECTION *sc = NULL; |
38b051a1 TM |
314 | |
315 | qc = OPENSSL_zalloc(sizeof(*qc)); | |
316 | if (qc == NULL) | |
317 | goto err; | |
318 | ||
22d53c88 HL |
319 | /* Initialise the QUIC_CONNECTION's stub header. */ |
320 | ssl_base = &qc->ssl; | |
a7f41885 | 321 | if (!ossl_ssl_init(ssl_base, ctx, ctx->method, SSL_TYPE_QUIC_CONNECTION)) { |
22d53c88 | 322 | ssl_base = NULL; |
38b051a1 TM |
323 | goto err; |
324 | } | |
38b051a1 | 325 | |
4e3a55fd | 326 | qc->tls = ossl_ssl_connection_new_int(ctx, TLS_method()); |
a7f41885 MC |
327 | if (qc->tls == NULL || (sc = SSL_CONNECTION_FROM_SSL(qc->tls)) == NULL) |
328 | goto err; | |
f0d9757c | 329 | |
43788fb3 | 330 | /* override the user_ssl of the inner connection */ |
f082205b | 331 | sc->s3.flags |= TLS1_FLAGS_QUIC; |
a7f41885 | 332 | |
f0d9757c | 333 | /* Restrict options derived from the SSL_CTX. */ |
7163617f HL |
334 | sc->options &= OSSL_QUIC_PERMITTED_OPTIONS; |
335 | sc->pha_enabled = 0; | |
f0d9757c | 336 | |
629b408c | 337 | #if defined(OPENSSL_THREADS) |
ffce2946 | 338 | if ((qc->mutex = ossl_crypto_mutex_new()) == NULL) |
4847599b | 339 | goto err; |
629b408c | 340 | #endif |
4847599b | 341 | |
629b408c | 342 | #if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST) |
f2f7c4f1 HL |
343 | qc->is_thread_assisted |
344 | = (ssl_base->method == OSSL_QUIC_client_thread_method()); | |
629b408c | 345 | #endif |
f2f7c4f1 | 346 | |
dfb9ae14 HL |
347 | qc->as_server = 0; /* TODO(QUIC): server support */ |
348 | qc->as_server_state = qc->as_server; | |
349 | ||
8b7be3aa | 350 | qc->default_stream_mode = SSL_DEFAULT_STREAM_MODE_AUTO_BIDI; |
21c80696 HL |
351 | qc->default_ssl_mode = qc->ssl.ctx->mode; |
352 | qc->default_blocking = 1; | |
fb4a2bba | 353 | qc->blocking = 1; |
83df44ae | 354 | qc->incoming_stream_policy = SSL_INCOMING_STREAM_POLICY_AUTO; |
21c80696 | 355 | qc->last_error = SSL_ERROR_NONE; |
a7f41885 | 356 | |
23c04709 HL |
357 | if (!create_channel(qc)) |
358 | goto err; | |
359 | ||
5cf99b40 MC |
360 | ossl_quic_channel_set_msg_callback(qc->ch, ctx->msg_callback, ssl_base); |
361 | ossl_quic_channel_set_msg_callback_arg(qc->ch, ctx->msg_callback_arg); | |
362 | ||
995ff282 HL |
363 | qc_update_reject_policy(qc); |
364 | ||
21c80696 HL |
365 | /* |
366 | * We do not create the default XSO yet. The reason for this is that the | |
367 | * stream ID of the default XSO will depend on whether the stream is client | |
368 | * or server-initiated, which depends on who transmits first. Since we do | |
369 | * not know whether the application will be using a client-transmits-first | |
370 | * or server-transmits-first protocol, we defer default XSO creation until | |
371 | * the client calls SSL_read() or SSL_write(). If it calls SSL_read() first, | |
372 | * we take that as a cue that the client is expecting a server-initiated | |
373 | * stream, and vice versa if SSL_write() is called first. | |
374 | */ | |
22d53c88 HL |
375 | return ssl_base; |
376 | ||
38b051a1 | 377 | err: |
2dbc39de | 378 | if (qc != NULL) { |
629b408c HL |
379 | #if defined(OPENSSL_THREADS) |
380 | ossl_crypto_mutex_free(qc->mutex); | |
381 | #endif | |
2dbc39de HL |
382 | ossl_quic_channel_free(qc->ch); |
383 | SSL_free(qc->tls); | |
384 | } | |
22d53c88 | 385 | OPENSSL_free(qc); |
38b051a1 TM |
386 | return NULL; |
387 | } | |
388 | ||
22d53c88 | 389 | /* SSL_free */ |
a8489257 | 390 | QUIC_TAKES_LOCK |
22d53c88 HL |
391 | void ossl_quic_free(SSL *s) |
392 | { | |
072328dd | 393 | QCTX ctx; |
9cab4bd5 | 394 | int is_default; |
22d53c88 | 395 | |
072328dd HL |
396 | /* We should never be called on anything but a QSO. */ |
397 | if (!expect_quic(s, &ctx)) | |
22d53c88 HL |
398 | return; |
399 | ||
22b1a96f HL |
400 | quic_lock(ctx.qc); |
401 | ||
2dbc39de HL |
402 | if (ctx.is_stream) { |
403 | /* | |
404 | * When a QSSO is freed, the XSO is freed immediately, because the XSO | |
405 | * itself only contains API personality layer data. However the | |
406 | * underlying QUIC_STREAM is not freed immediately but is instead marked | |
407 | * as deleted for later collection. | |
408 | */ | |
409 | ||
2dbc39de HL |
410 | assert(ctx.qc->num_xso > 0); |
411 | --ctx.qc->num_xso; | |
412 | ||
9aaafc26 HL |
413 | /* If a stream's send part has not been finished, auto-reset it. */ |
414 | if (ctx.xso->stream->sstream != NULL | |
415 | && !ossl_quic_sstream_get_final_size(ctx.xso->stream->sstream, NULL)) | |
416 | ossl_quic_stream_map_reset_stream_send_part(ossl_quic_channel_get_qsm(ctx.qc->ch), | |
417 | ctx.xso->stream, 0); | |
2dbc39de | 418 | |
9aaafc26 HL |
419 | /* Do STOP_SENDING for the receive part, if applicable. */ |
420 | if (ctx.xso->stream->rstream != NULL) | |
421 | ossl_quic_stream_map_stop_sending_recv_part(ossl_quic_channel_get_qsm(ctx.qc->ch), | |
422 | ctx.xso->stream, 0); | |
f20fdd16 HL |
423 | |
424 | /* Update stream state. */ | |
9aaafc26 HL |
425 | ctx.xso->stream->deleted = 1; |
426 | ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(ctx.qc->ch), | |
f20fdd16 HL |
427 | ctx.xso->stream); |
428 | ||
9cab4bd5 | 429 | is_default = (ctx.xso == ctx.qc->default_xso); |
2dbc39de HL |
430 | quic_unlock(ctx.qc); |
431 | ||
9cab4bd5 HL |
432 | /* |
433 | * Unref the connection in most cases; the XSO has a ref to the QC and | |
434 | * not vice versa. But for a default XSO, to avoid circular references, | |
435 | * the QC refs the XSO but the XSO does not ref the QC. If we are the | |
436 | * default XSO, we only get here when the QC is being torn down anyway, | |
437 | * so don't call SSL_free(qc) as we are already in it. | |
438 | */ | |
439 | if (!is_default) | |
440 | SSL_free(&ctx.qc->ssl); | |
441 | ||
2dbc39de HL |
442 | /* Note: SSL_free calls OPENSSL_free(xso) for us */ |
443 | return; | |
444 | } | |
445 | ||
2dbc39de HL |
446 | /* |
447 | * Free the default XSO, if any. The QUIC_STREAM is not deleted at this | |
448 | * stage, but is freed during the channel free when the whole QSM is freed. | |
449 | */ | |
21c80696 HL |
450 | if (ctx.qc->default_xso != NULL) { |
451 | QUIC_XSO *xso = ctx.qc->default_xso; | |
452 | ||
453 | quic_unlock(ctx.qc); | |
454 | SSL_free(&xso->ssl); | |
455 | quic_lock(ctx.qc); | |
9cab4bd5 | 456 | ctx.qc->default_xso = NULL; |
21c80696 | 457 | } |
2dbc39de HL |
458 | |
459 | /* Ensure we have no remaining XSOs. */ | |
460 | assert(ctx.qc->num_xso == 0); | |
461 | ||
629b408c | 462 | #if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST) |
072328dd HL |
463 | if (ctx.qc->is_thread_assisted && ctx.qc->started) { |
464 | ossl_quic_thread_assist_wait_stopped(&ctx.qc->thread_assist); | |
465 | ossl_quic_thread_assist_cleanup(&ctx.qc->thread_assist); | |
dbe7b51a | 466 | } |
629b408c | 467 | #endif |
f2f7c4f1 | 468 | |
072328dd | 469 | ossl_quic_channel_free(ctx.qc->ch); |
22d53c88 | 470 | |
072328dd HL |
471 | BIO_free(ctx.qc->net_rbio); |
472 | BIO_free(ctx.qc->net_wbio); | |
d1ac77b1 | 473 | |
22d53c88 | 474 | /* Note: SSL_free calls OPENSSL_free(qc) for us */ |
a7f41885 | 475 | |
072328dd | 476 | SSL_free(ctx.qc->tls); |
45b7c7e0 | 477 | quic_unlock(ctx.qc); /* tsan doesn't like freeing locked mutexes */ |
629b408c | 478 | #if defined(OPENSSL_THREADS) |
45b7c7e0 | 479 | ossl_crypto_mutex_free(&ctx.qc->mutex); |
629b408c | 480 | #endif |
22d53c88 HL |
481 | } |
482 | ||
483 | /* SSL method init */ | |
38b051a1 | 484 | int ossl_quic_init(SSL *s) |
99e1cc7b | 485 | { |
22d53c88 HL |
486 | /* Same op as SSL_clear, forward the call. */ |
487 | return ossl_quic_clear(s); | |
99e1cc7b TM |
488 | } |
489 | ||
22d53c88 | 490 | /* SSL method deinit */ |
38b051a1 TM |
491 | void ossl_quic_deinit(SSL *s) |
492 | { | |
22d53c88 | 493 | /* No-op. */ |
38b051a1 TM |
494 | } |
495 | ||
22d53c88 HL |
496 | /* SSL_reset */ |
497 | int ossl_quic_reset(SSL *s) | |
498 | { | |
072328dd | 499 | QCTX ctx; |
22d53c88 | 500 | |
072328dd | 501 | if (!expect_quic(s, &ctx)) |
22d53c88 HL |
502 | return 0; |
503 | ||
c8b3fdc2 | 504 | /* TODO(QUIC); Currently a no-op. */ |
22d53c88 HL |
505 | return 1; |
506 | } | |
507 | ||
508 | /* SSL_clear */ | |
509 | int ossl_quic_clear(SSL *s) | |
99e1cc7b | 510 | { |
072328dd | 511 | QCTX ctx; |
38b051a1 | 512 | |
072328dd | 513 | if (!expect_quic(s, &ctx)) |
22d53c88 HL |
514 | return 0; |
515 | ||
c8b3fdc2 | 516 | /* TODO(QUIC): Currently a no-op. */ |
22d53c88 HL |
517 | return 1; |
518 | } | |
38b051a1 | 519 | |
e3e9794a HL |
520 | int ossl_quic_conn_set_override_now_cb(SSL *s, |
521 | OSSL_TIME (*now_cb)(void *arg), | |
522 | void *now_cb_arg) | |
b212d554 | 523 | { |
072328dd | 524 | QCTX ctx; |
b212d554 | 525 | |
072328dd | 526 | if (!expect_quic(s, &ctx)) |
e3e9794a HL |
527 | return 0; |
528 | ||
529 | quic_lock(ctx.qc); | |
072328dd HL |
530 | |
531 | ctx.qc->override_now_cb = now_cb; | |
532 | ctx.qc->override_now_cb_arg = now_cb_arg; | |
e3e9794a HL |
533 | |
534 | quic_unlock(ctx.qc); | |
535 | return 1; | |
b212d554 HL |
536 | } |
537 | ||
3b1ab5a3 HL |
538 | void ossl_quic_conn_force_assist_thread_wake(SSL *s) |
539 | { | |
072328dd HL |
540 | QCTX ctx; |
541 | ||
542 | if (!expect_quic(s, &ctx)) | |
543 | return; | |
3b1ab5a3 | 544 | |
629b408c | 545 | #if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST) |
072328dd HL |
546 | if (ctx.qc->is_thread_assisted && ctx.qc->started) |
547 | ossl_quic_thread_assist_notify_deadline_changed(&ctx.qc->thread_assist); | |
629b408c | 548 | #endif |
3b1ab5a3 HL |
549 | } |
550 | ||
995ff282 HL |
551 | QUIC_NEEDS_LOCK |
552 | static void qc_touch_default_xso(QUIC_CONNECTION *qc) | |
553 | { | |
554 | qc->default_xso_created = 1; | |
555 | qc_update_reject_policy(qc); | |
556 | } | |
557 | ||
9cab4bd5 HL |
558 | /* |
559 | * Changes default XSO. Allows caller to keep reference to the old default XSO | |
560 | * (if any). Reference to new XSO is transferred from caller. | |
561 | */ | |
995ff282 | 562 | QUIC_NEEDS_LOCK |
9cab4bd5 HL |
563 | static void qc_set_default_xso_keep_ref(QUIC_CONNECTION *qc, QUIC_XSO *xso, |
564 | int touch, | |
565 | QUIC_XSO **old_xso) | |
995ff282 | 566 | { |
9cab4bd5 HL |
567 | int refs; |
568 | ||
569 | *old_xso = NULL; | |
570 | ||
571 | if (qc->default_xso != xso) { | |
572 | *old_xso = qc->default_xso; /* transfer old XSO ref to caller */ | |
573 | ||
574 | qc->default_xso = xso; | |
575 | ||
576 | if (xso == NULL) { | |
577 | /* | |
578 | * Changing to not having a default XSO. XSO becomes standalone and | |
579 | * now has a ref to the QC. | |
580 | */ | |
581 | if (!ossl_assert(SSL_up_ref(&qc->ssl))) | |
582 | return; | |
583 | } else { | |
584 | /* | |
585 | * Changing from not having a default XSO to having one. The new XSO | |
586 | * will have had a reference to the QC we need to drop to avoid a | |
587 | * circular reference. | |
3a61a96c HL |
588 | * |
589 | * Currently we never change directly from one default XSO to | |
590 | * another, though this function would also still be correct if this | |
591 | * weren't the case. | |
9cab4bd5 | 592 | */ |
3a61a96c HL |
593 | assert(*old_xso == NULL); |
594 | ||
4eecc6aa | 595 | CRYPTO_DOWN_REF(&qc->ssl.references, &refs); |
9cab4bd5 HL |
596 | assert(refs > 0); |
597 | } | |
598 | } | |
599 | ||
995ff282 HL |
600 | if (touch) |
601 | qc_touch_default_xso(qc); | |
602 | } | |
603 | ||
9cab4bd5 HL |
604 | /* |
605 | * Changes default XSO, releasing the reference to any previous default XSO. | |
606 | * Reference to new XSO is transferred from caller. | |
607 | */ | |
608 | QUIC_NEEDS_LOCK | |
609 | static void qc_set_default_xso(QUIC_CONNECTION *qc, QUIC_XSO *xso, int touch) | |
610 | { | |
611 | QUIC_XSO *old_xso = NULL; | |
612 | ||
613 | qc_set_default_xso_keep_ref(qc, xso, touch, &old_xso); | |
614 | ||
615 | if (old_xso != NULL) | |
616 | SSL_free(&old_xso->ssl); | |
617 | } | |
618 | ||
f0d9757c HL |
619 | /* SSL_set_options */ |
620 | static uint64_t quic_mask_or_options(SSL *ssl, uint64_t mask_value, uint64_t or_value) | |
621 | { | |
622 | QCTX ctx; | |
623 | uint64_t r, options; | |
624 | ||
625 | if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/-1, &ctx)) | |
626 | return 0; | |
627 | ||
628 | /* | |
629 | * Currently most options that we permit are handled in the handshake | |
630 | * layer. | |
631 | */ | |
632 | options = (SSL_get_options(ctx.qc->tls) & ~mask_value) | or_value; | |
633 | options &= OSSL_QUIC_PERMITTED_OPTIONS; | |
634 | r = SSL_set_options(ctx.qc->tls, options); | |
635 | ||
636 | if (ctx.xso->stream != NULL && ctx.xso->stream->rstream != NULL) | |
637 | ossl_quic_rstream_set_cleanse(ctx.xso->stream->rstream, | |
638 | (options & SSL_OP_CLEANSE_PLAINTEXT) != 0); | |
639 | ||
640 | quic_unlock(ctx.qc); | |
641 | return r; | |
642 | } | |
643 | ||
644 | uint64_t ossl_quic_set_options(SSL *ssl, uint64_t options) | |
645 | { | |
646 | return quic_mask_or_options(ssl, UINT64_MAX, options); | |
647 | } | |
648 | ||
649 | /* SSL_clear_options */ | |
650 | uint64_t ossl_quic_clear_options(SSL *ssl, uint64_t options) | |
651 | { | |
652 | return quic_mask_or_options(ssl, options, 0); | |
653 | } | |
654 | ||
655 | /* SSL_get_options */ | |
656 | uint64_t ossl_quic_get_options(const SSL *ssl) | |
657 | { | |
658 | return quic_mask_or_options((SSL *)ssl, 0, 0); | |
659 | } | |
660 | ||
22d53c88 HL |
661 | /* |
662 | * QUIC Front-End I/O API: Network BIO Configuration | |
663 | * ================================================= | |
664 | * | |
665 | * Handling the different BIOs is difficult: | |
666 | * | |
667 | * - It is more or less a requirement that we use non-blocking network I/O; | |
668 | * we need to be able to have timeouts on recv() calls, and make best effort | |
669 | * (non blocking) send() and recv() calls. | |
670 | * | |
671 | * The only sensible way to do this is to configure the socket into | |
672 | * non-blocking mode. We could try to do select() before calling send() or | |
673 | * recv() to get a guarantee that the call will not block, but this will | |
674 | * probably run into issues with buggy OSes which generate spurious socket | |
675 | * readiness events. In any case, relying on this to work reliably does not | |
676 | * seem sane. | |
677 | * | |
678 | * Timeouts could be handled via setsockopt() socket timeout options, but | |
679 | * this depends on OS support and adds another syscall to every network I/O | |
680 | * operation. It also has obvious thread safety concerns if we want to move | |
681 | * to concurrent use of a single socket at some later date. | |
682 | * | |
683 | * Some OSes support a MSG_DONTWAIT flag which allows a single I/O option to | |
684 | * be made non-blocking. However some OSes (e.g. Windows) do not support | |
685 | * this, so we cannot rely on this. | |
686 | * | |
687 | * As such, we need to configure any FD in non-blocking mode. This may | |
688 | * confound users who pass a blocking socket to libssl. However, in practice | |
689 | * it would be extremely strange for a user of QUIC to pass an FD to us, | |
690 | * then also try and send receive traffic on the same socket(!). Thus the | |
691 | * impact of this should be limited, and can be documented. | |
692 | * | |
693 | * - We support both blocking and non-blocking operation in terms of the API | |
694 | * presented to the user. One prospect is to set the blocking mode based on | |
695 | * whether the socket passed to us was already in blocking mode. However, | |
696 | * Windows has no API for determining if a socket is in blocking mode (!), | |
697 | * therefore this cannot be done portably. Currently therefore we expose an | |
698 | * explicit API call to set this, and default to blocking mode. | |
699 | * | |
700 | * - We need to determine our initial destination UDP address. The "natural" | |
701 | * way for a user to do this is to set the peer variable on a BIO_dgram. | |
702 | * However, this has problems because BIO_dgram's peer variable is used for | |
703 | * both transmission and reception. This means it can be constantly being | |
704 | * changed to a malicious value (e.g. if some random unrelated entity on the | |
705 | * network starts sending traffic to us) on every read call. This is not a | |
706 | * direct issue because we use the 'stateless' BIO_sendmmsg and BIO_recvmmsg | |
707 | * calls only, which do not use this variable. However, we do need to let | |
708 | * the user specify the peer in a 'normal' manner. The compromise here is | |
709 | * that we grab the current peer value set at the time the write BIO is set | |
710 | * and do not read the value again. | |
711 | * | |
712 | * - We also need to support memory BIOs (e.g. BIO_dgram_pair) or custom BIOs. | |
713 | * Currently we do this by only supporting non-blocking mode. | |
714 | * | |
715 | */ | |
716 | ||
717 | /* | |
718 | * Determines what initial destination UDP address we should use, if possible. | |
719 | * If this fails the client must set the destination address manually, or use a | |
720 | * BIO which does not need a destination address. | |
721 | */ | |
722 | static int csm_analyse_init_peer_addr(BIO *net_wbio, BIO_ADDR *peer) | |
723 | { | |
75b2920a | 724 | if (BIO_dgram_get_peer(net_wbio, peer) <= 0) |
22d53c88 HL |
725 | return 0; |
726 | ||
727 | return 1; | |
728 | } | |
729 | ||
072328dd | 730 | void ossl_quic_conn_set0_net_rbio(SSL *s, BIO *net_rbio) |
22d53c88 | 731 | { |
072328dd HL |
732 | QCTX ctx; |
733 | ||
734 | if (!expect_quic(s, &ctx)) | |
735 | return; | |
736 | ||
737 | if (ctx.qc->net_rbio == net_rbio) | |
38b051a1 | 738 | return; |
38b051a1 | 739 | |
23c04709 | 740 | if (!ossl_quic_channel_set_net_rbio(ctx.qc->ch, net_rbio)) |
22d53c88 HL |
741 | return; |
742 | ||
072328dd HL |
743 | BIO_free(ctx.qc->net_rbio); |
744 | ctx.qc->net_rbio = net_rbio; | |
22d53c88 HL |
745 | |
746 | /* | |
747 | * If what we have is not pollable (e.g. a BIO_dgram_pair) disable blocking | |
748 | * mode as we do not support it for non-pollable BIOs. | |
749 | */ | |
750 | if (net_rbio != NULL) { | |
751 | BIO_POLL_DESCRIPTOR d = {0}; | |
752 | ||
753 | if (!BIO_get_rpoll_descriptor(net_rbio, &d) | |
754 | || d.type != BIO_POLL_DESCRIPTOR_TYPE_SOCK_FD) { | |
cb5c208b HL |
755 | ctx.qc->blocking = 0; |
756 | ctx.qc->default_blocking = 0; | |
072328dd | 757 | ctx.qc->can_poll_net_rbio = 0; |
22d53c88 | 758 | } else { |
072328dd | 759 | ctx.qc->can_poll_net_rbio = 1; |
22d53c88 HL |
760 | } |
761 | } | |
99e1cc7b TM |
762 | } |
763 | ||
072328dd | 764 | void ossl_quic_conn_set0_net_wbio(SSL *s, BIO *net_wbio) |
38b051a1 | 765 | { |
072328dd HL |
766 | QCTX ctx; |
767 | ||
768 | if (!expect_quic(s, &ctx)) | |
22d53c88 HL |
769 | return; |
770 | ||
072328dd | 771 | if (ctx.qc->net_wbio == net_wbio) |
22d53c88 HL |
772 | return; |
773 | ||
23c04709 | 774 | if (!ossl_quic_channel_set_net_wbio(ctx.qc->ch, net_wbio)) |
072328dd HL |
775 | return; |
776 | ||
777 | BIO_free(ctx.qc->net_wbio); | |
778 | ctx.qc->net_wbio = net_wbio; | |
22d53c88 HL |
779 | |
780 | if (net_wbio != NULL) { | |
781 | BIO_POLL_DESCRIPTOR d = {0}; | |
38b051a1 | 782 | |
22d53c88 HL |
783 | if (!BIO_get_wpoll_descriptor(net_wbio, &d) |
784 | || d.type != BIO_POLL_DESCRIPTOR_TYPE_SOCK_FD) { | |
cb5c208b HL |
785 | ctx.qc->blocking = 0; |
786 | ctx.qc->default_blocking = 0; | |
072328dd | 787 | ctx.qc->can_poll_net_wbio = 0; |
22d53c88 | 788 | } else { |
072328dd | 789 | ctx.qc->can_poll_net_wbio = 1; |
22d53c88 | 790 | } |
38b051a1 | 791 | |
22d53c88 HL |
792 | /* |
793 | * If we do not have a peer address yet, and we have not started trying | |
794 | * to connect yet, try to autodetect one. | |
795 | */ | |
072328dd HL |
796 | if (BIO_ADDR_family(&ctx.qc->init_peer_addr) == AF_UNSPEC |
797 | && !ctx.qc->started) { | |
798 | if (!csm_analyse_init_peer_addr(net_wbio, &ctx.qc->init_peer_addr)) | |
22d53c88 | 799 | /* best effort */ |
072328dd | 800 | BIO_ADDR_clear(&ctx.qc->init_peer_addr); |
22d53c88 | 801 | |
23c04709 HL |
802 | ossl_quic_channel_set_peer_addr(ctx.qc->ch, |
803 | &ctx.qc->init_peer_addr); | |
22d53c88 | 804 | } |
38b051a1 | 805 | } |
22d53c88 | 806 | } |
38b051a1 | 807 | |
072328dd | 808 | BIO *ossl_quic_conn_get_net_rbio(const SSL *s) |
22d53c88 | 809 | { |
072328dd HL |
810 | QCTX ctx; |
811 | ||
812 | if (!expect_quic(s, &ctx)) | |
813 | return NULL; | |
814 | ||
815 | return ctx.qc->net_rbio; | |
38b051a1 TM |
816 | } |
817 | ||
072328dd | 818 | BIO *ossl_quic_conn_get_net_wbio(const SSL *s) |
22d53c88 | 819 | { |
072328dd HL |
820 | QCTX ctx; |
821 | ||
822 | if (!expect_quic(s, &ctx)) | |
823 | return NULL; | |
824 | ||
825 | return ctx.qc->net_wbio; | |
22d53c88 HL |
826 | } |
827 | ||
072328dd | 828 | int ossl_quic_conn_get_blocking_mode(const SSL *s) |
99e1cc7b | 829 | { |
072328dd HL |
830 | QCTX ctx; |
831 | ||
832 | if (!expect_quic(s, &ctx)) | |
833 | return 0; | |
834 | ||
cb5c208b HL |
835 | if (ctx.is_stream) |
836 | return ctx.xso->blocking; | |
837 | ||
072328dd | 838 | return ctx.qc->blocking; |
22d53c88 HL |
839 | } |
840 | ||
072328dd | 841 | int ossl_quic_conn_set_blocking_mode(SSL *s, int blocking) |
22d53c88 | 842 | { |
072328dd HL |
843 | QCTX ctx; |
844 | ||
845 | if (!expect_quic(s, &ctx)) | |
846 | return 0; | |
847 | ||
22d53c88 HL |
848 | /* Cannot enable blocking mode if we do not have pollable FDs. */ |
849 | if (blocking != 0 && | |
072328dd | 850 | (!ctx.qc->can_poll_net_rbio || !ctx.qc->can_poll_net_wbio)) |
faa3a180 | 851 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_UNSUPPORTED, NULL); |
22d53c88 | 852 | |
cb5c208b HL |
853 | if (!ctx.is_stream) { |
854 | /* | |
855 | * If called on a QCSO, update default and connection-level blocking | |
856 | * modes. | |
857 | */ | |
858 | ctx.qc->blocking = (blocking != 0); | |
859 | ctx.qc->default_blocking = ctx.qc->blocking; | |
860 | } | |
861 | ||
862 | if (ctx.xso != NULL) | |
863 | /* | |
864 | * If called on a QSSO or QCSO with a default XSO, update blocking | |
865 | * mode. | |
866 | */ | |
867 | ctx.xso->blocking = (blocking != 0); | |
868 | ||
99e1cc7b TM |
869 | return 1; |
870 | } | |
871 | ||
072328dd | 872 | int ossl_quic_conn_set_initial_peer_addr(SSL *s, |
22d53c88 | 873 | const BIO_ADDR *peer_addr) |
99e1cc7b | 874 | { |
072328dd HL |
875 | QCTX ctx; |
876 | ||
877 | if (!expect_quic(s, &ctx)) | |
878 | return 0; | |
879 | ||
880 | if (ctx.qc->started) | |
faa3a180 | 881 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, |
22d53c88 | 882 | NULL); |
38b051a1 | 883 | |
22d53c88 | 884 | if (peer_addr == NULL) { |
072328dd | 885 | BIO_ADDR_clear(&ctx.qc->init_peer_addr); |
22d53c88 HL |
886 | return 1; |
887 | } | |
38b051a1 | 888 | |
072328dd | 889 | ctx.qc->init_peer_addr = *peer_addr; |
99e1cc7b TM |
890 | return 1; |
891 | } | |
892 | ||
22d53c88 HL |
893 | /* |
894 | * QUIC Front-End I/O API: Asynchronous I/O Management | |
895 | * =================================================== | |
896 | * | |
6084e04b HL |
897 | * (BIO/)SSL_handle_events => ossl_quic_handle_events |
898 | * (BIO/)SSL_get_event_timeout => ossl_quic_get_event_timeout | |
22d53c88 HL |
899 | * (BIO/)SSL_get_poll_fd => ossl_quic_get_poll_fd |
900 | * | |
901 | */ | |
902 | ||
903 | /* Returns 1 if the connection is being used in blocking mode. */ | |
cb5c208b | 904 | static int qc_blocking_mode(const QUIC_CONNECTION *qc) |
99e1cc7b | 905 | { |
22d53c88 HL |
906 | return qc->blocking; |
907 | } | |
38b051a1 | 908 | |
cb5c208b HL |
909 | static int xso_blocking_mode(const QUIC_XSO *xso) |
910 | { | |
911 | return xso->blocking | |
912 | && xso->conn->can_poll_net_rbio | |
913 | && xso->conn->can_poll_net_wbio; | |
914 | } | |
915 | ||
b626a0f1 | 916 | /* SSL_handle_events; performs QUIC I/O and timeout processing. */ |
a8489257 | 917 | QUIC_TAKES_LOCK |
6084e04b | 918 | int ossl_quic_handle_events(SSL *s) |
22d53c88 | 919 | { |
072328dd HL |
920 | QCTX ctx; |
921 | ||
922 | if (!expect_quic(s, &ctx)) | |
923 | return 0; | |
924 | ||
925 | quic_lock(ctx.qc); | |
072328dd HL |
926 | ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(ctx.qc->ch), 0); |
927 | quic_unlock(ctx.qc); | |
99e1cc7b TM |
928 | return 1; |
929 | } | |
930 | ||
22d53c88 | 931 | /* |
6084e04b | 932 | * SSL_get_event_timeout. Get the time in milliseconds until the SSL object |
b626a0f1 HL |
933 | * should next have events handled by the application by calling |
934 | * SSL_handle_events(). tv is set to 0 if the object should have events handled | |
935 | * immediately. If no timeout is currently active, *is_infinite is set to 1 and | |
936 | * the value of *tv is undefined. | |
22d53c88 | 937 | */ |
a8489257 | 938 | QUIC_TAKES_LOCK |
7ea49713 | 939 | int ossl_quic_get_event_timeout(SSL *s, struct timeval *tv, int *is_infinite) |
99e1cc7b | 940 | { |
072328dd | 941 | QCTX ctx; |
a1660c94 | 942 | OSSL_TIME deadline = ossl_time_infinite(); |
e44795bd | 943 | |
072328dd HL |
944 | if (!expect_quic(s, &ctx)) |
945 | return 0; | |
a8489257 | 946 | |
072328dd HL |
947 | quic_lock(ctx.qc); |
948 | ||
23c04709 HL |
949 | deadline |
950 | = ossl_quic_reactor_get_tick_deadline(ossl_quic_channel_get_reactor(ctx.qc->ch)); | |
22d53c88 HL |
951 | |
952 | if (ossl_time_is_infinite(deadline)) { | |
7ea49713 HL |
953 | *is_infinite = 1; |
954 | ||
955 | /* | |
956 | * Robustness against faulty applications that don't check *is_infinite; | |
957 | * harmless long timeout. | |
958 | */ | |
959 | tv->tv_sec = 1000000; | |
22d53c88 | 960 | tv->tv_usec = 0; |
7ea49713 | 961 | |
072328dd | 962 | quic_unlock(ctx.qc); |
22d53c88 HL |
963 | return 1; |
964 | } | |
965 | ||
e3e9794a | 966 | *tv = ossl_time_to_timeval(ossl_time_subtract(deadline, get_time(ctx.qc))); |
7ea49713 | 967 | *is_infinite = 0; |
072328dd | 968 | quic_unlock(ctx.qc); |
22d53c88 HL |
969 | return 1; |
970 | } | |
971 | ||
972 | /* SSL_get_rpoll_descriptor */ | |
072328dd | 973 | int ossl_quic_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc) |
22d53c88 | 974 | { |
072328dd HL |
975 | QCTX ctx; |
976 | ||
977 | if (!expect_quic(s, &ctx)) | |
e44795bd TM |
978 | return 0; |
979 | ||
072328dd HL |
980 | if (desc == NULL || ctx.qc->net_rbio == NULL) |
981 | return 0; | |
982 | ||
983 | return BIO_get_rpoll_descriptor(ctx.qc->net_rbio, desc); | |
99e1cc7b TM |
984 | } |
985 | ||
22d53c88 | 986 | /* SSL_get_wpoll_descriptor */ |
072328dd | 987 | int ossl_quic_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc) |
99e1cc7b | 988 | { |
072328dd HL |
989 | QCTX ctx; |
990 | ||
991 | if (!expect_quic(s, &ctx)) | |
992 | return 0; | |
993 | ||
994 | if (desc == NULL || ctx.qc->net_wbio == NULL) | |
22d53c88 HL |
995 | return 0; |
996 | ||
072328dd | 997 | return BIO_get_wpoll_descriptor(ctx.qc->net_wbio, desc); |
99e1cc7b TM |
998 | } |
999 | ||
b639475a | 1000 | /* SSL_net_read_desired */ |
a8489257 | 1001 | QUIC_TAKES_LOCK |
072328dd | 1002 | int ossl_quic_get_net_read_desired(SSL *s) |
99e1cc7b | 1003 | { |
072328dd | 1004 | QCTX ctx; |
a8489257 HL |
1005 | int ret; |
1006 | ||
072328dd HL |
1007 | if (!expect_quic(s, &ctx)) |
1008 | return 0; | |
1009 | ||
1010 | quic_lock(ctx.qc); | |
072328dd HL |
1011 | ret = ossl_quic_reactor_net_read_desired(ossl_quic_channel_get_reactor(ctx.qc->ch)); |
1012 | quic_unlock(ctx.qc); | |
a8489257 | 1013 | return ret; |
22d53c88 | 1014 | } |
e44795bd | 1015 | |
b639475a | 1016 | /* SSL_net_write_desired */ |
a8489257 | 1017 | QUIC_TAKES_LOCK |
072328dd | 1018 | int ossl_quic_get_net_write_desired(SSL *s) |
22d53c88 | 1019 | { |
a8489257 | 1020 | int ret; |
072328dd HL |
1021 | QCTX ctx; |
1022 | ||
1023 | if (!expect_quic(s, &ctx)) | |
1024 | return 0; | |
a8489257 | 1025 | |
072328dd | 1026 | quic_lock(ctx.qc); |
072328dd HL |
1027 | ret = ossl_quic_reactor_net_write_desired(ossl_quic_channel_get_reactor(ctx.qc->ch)); |
1028 | quic_unlock(ctx.qc); | |
a8489257 | 1029 | return ret; |
99e1cc7b TM |
1030 | } |
1031 | ||
22d53c88 HL |
1032 | /* |
1033 | * QUIC Front-End I/O API: Connection Lifecycle Operations | |
1034 | * ======================================================= | |
1035 | * | |
1036 | * SSL_do_handshake => ossl_quic_do_handshake | |
1037 | * SSL_set_connect_state => ossl_quic_set_connect_state | |
1038 | * SSL_set_accept_state => ossl_quic_set_accept_state | |
1039 | * SSL_shutdown => ossl_quic_shutdown | |
1040 | * SSL_ctrl => ossl_quic_ctrl | |
1041 | * (BIO/)SSL_connect => ossl_quic_connect | |
1042 | * (BIO/)SSL_accept => ossl_quic_accept | |
1043 | * | |
1044 | */ | |
1045 | ||
1046 | /* SSL_shutdown */ | |
e8043229 | 1047 | static int quic_shutdown_wait(void *arg) |
99e1cc7b | 1048 | { |
e8043229 | 1049 | QUIC_CONNECTION *qc = arg; |
22d53c88 | 1050 | |
23c04709 | 1051 | return ossl_quic_channel_is_terminated(qc->ch); |
e8043229 | 1052 | } |
22d53c88 | 1053 | |
a8489257 | 1054 | QUIC_TAKES_LOCK |
072328dd | 1055 | int ossl_quic_conn_shutdown(SSL *s, uint64_t flags, |
e8043229 HL |
1056 | const SSL_SHUTDOWN_EX_ARGS *args, |
1057 | size_t args_len) | |
1058 | { | |
a8489257 | 1059 | int ret; |
072328dd | 1060 | QCTX ctx; |
a8489257 | 1061 | |
072328dd HL |
1062 | if (!expect_quic(s, &ctx)) |
1063 | return 0; | |
1064 | ||
cb5c208b HL |
1065 | if (ctx.is_stream) |
1066 | /* TODO(QUIC): Semantics currently undefined for QSSOs */ | |
1067 | return -1; | |
1068 | ||
072328dd | 1069 | quic_lock(ctx.qc); |
a8489257 | 1070 | |
072328dd | 1071 | ossl_quic_channel_local_close(ctx.qc->ch, |
e8043229 HL |
1072 | args != NULL ? args->quic_error_code : 0); |
1073 | ||
1d40b151 | 1074 | /* TODO(QUIC): !SSL_SHUTDOWN_FLAG_NO_STREAM_FLUSH */ |
e8043229 | 1075 | |
072328dd HL |
1076 | if (ossl_quic_channel_is_terminated(ctx.qc->ch)) { |
1077 | quic_unlock(ctx.qc); | |
e8043229 | 1078 | return 1; |
a8489257 | 1079 | } |
e8043229 | 1080 | |
cb5c208b | 1081 | if (qc_blocking_mode(ctx.qc) && (flags & SSL_SHUTDOWN_FLAG_RAPID) == 0) |
072328dd | 1082 | block_until_pred(ctx.qc, quic_shutdown_wait, ctx.qc, 0); |
e8043229 | 1083 | else |
072328dd | 1084 | ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(ctx.qc->ch), 0); |
e8043229 | 1085 | |
072328dd HL |
1086 | ret = ossl_quic_channel_is_terminated(ctx.qc->ch); |
1087 | quic_unlock(ctx.qc); | |
a8489257 | 1088 | return ret; |
99e1cc7b TM |
1089 | } |
1090 | ||
22d53c88 | 1091 | /* SSL_ctrl */ |
e44795bd | 1092 | long ossl_quic_ctrl(SSL *s, int cmd, long larg, void *parg) |
99e1cc7b | 1093 | { |
072328dd | 1094 | QCTX ctx; |
38b051a1 | 1095 | |
072328dd | 1096 | if (!expect_quic(s, &ctx)) |
38b051a1 TM |
1097 | return 0; |
1098 | ||
22d53c88 HL |
1099 | switch (cmd) { |
1100 | case SSL_CTRL_MODE: | |
cb5c208b HL |
1101 | /* If called on a QCSO, update the default mode. */ |
1102 | if (!ctx.is_stream) | |
1103 | ctx.qc->default_ssl_mode |= (uint32_t)larg; | |
1104 | ||
1105 | /* | |
1106 | * If we were called on a QSSO or have a default stream, we also update | |
1107 | * that. | |
1108 | */ | |
1109 | if (ctx.xso != NULL) { | |
1110 | /* Cannot enable EPW while AON write in progress. */ | |
1111 | if (ctx.xso->aon_write_in_progress) | |
1112 | larg &= ~SSL_MODE_ENABLE_PARTIAL_WRITE; | |
1113 | ||
1114 | ctx.xso->ssl_mode |= (uint32_t)larg; | |
1115 | return ctx.xso->ssl_mode; | |
1116 | } | |
dfc227bd | 1117 | |
cb5c208b | 1118 | return ctx.qc->default_ssl_mode; |
22d53c88 | 1119 | case SSL_CTRL_CLEAR_MODE: |
cb5c208b HL |
1120 | if (!ctx.is_stream) |
1121 | ctx.qc->default_ssl_mode &= ~(uint32_t)larg; | |
1122 | ||
1123 | if (ctx.xso != NULL) { | |
1124 | ctx.xso->ssl_mode &= ~(uint32_t)larg; | |
1125 | return ctx.xso->ssl_mode; | |
1126 | } | |
1127 | ||
1128 | return ctx.qc->default_ssl_mode; | |
63dfde87 MC |
1129 | |
1130 | case SSL_CTRL_SET_MSG_CALLBACK_ARG: | |
5cf99b40 | 1131 | ossl_quic_channel_set_msg_callback_arg(ctx.qc->ch, parg); |
63dfde87 MC |
1132 | /* This ctrl also needs to be passed to the internal SSL object */ |
1133 | return SSL_ctrl(ctx.qc->tls, cmd, larg, parg); | |
1134 | ||
2f90ea3d HL |
1135 | case DTLS_CTRL_GET_TIMEOUT: /* DTLSv1_get_timeout */ |
1136 | { | |
1137 | int is_infinite; | |
1138 | ||
1139 | if (!ossl_quic_get_event_timeout(s, parg, &is_infinite)) | |
1140 | return 0; | |
1141 | ||
1142 | return !is_infinite; | |
1143 | } | |
1144 | case DTLS_CTRL_HANDLE_TIMEOUT: /* DTLSv1_handle_timeout */ | |
1145 | /* For legacy compatibility with DTLS calls. */ | |
1146 | return ossl_quic_handle_events(s) == 1 ? 1 : -1; | |
22d53c88 | 1147 | default: |
f8ffab0d | 1148 | /* Probably a TLS related ctrl. Defer to our internal SSL object */ |
072328dd | 1149 | return SSL_ctrl(ctx.qc->tls, cmd, larg, parg); |
08e49012 | 1150 | } |
22d53c88 HL |
1151 | } |
1152 | ||
1153 | /* SSL_set_connect_state */ | |
072328dd | 1154 | void ossl_quic_set_connect_state(SSL *s) |
22d53c88 | 1155 | { |
072328dd HL |
1156 | QCTX ctx; |
1157 | ||
1158 | if (!expect_quic(s, &ctx)) | |
1159 | return; | |
1160 | ||
22d53c88 | 1161 | /* Cannot be changed after handshake started */ |
cb5c208b | 1162 | if (ctx.qc->started || ctx.is_stream) |
22d53c88 HL |
1163 | return; |
1164 | ||
dfb9ae14 | 1165 | ctx.qc->as_server_state = 0; |
22d53c88 HL |
1166 | } |
1167 | ||
1168 | /* SSL_set_accept_state */ | |
072328dd | 1169 | void ossl_quic_set_accept_state(SSL *s) |
22d53c88 | 1170 | { |
072328dd HL |
1171 | QCTX ctx; |
1172 | ||
1173 | if (!expect_quic(s, &ctx)) | |
1174 | return; | |
1175 | ||
22d53c88 | 1176 | /* Cannot be changed after handshake started */ |
cb5c208b | 1177 | if (ctx.qc->started || ctx.is_stream) |
22d53c88 HL |
1178 | return; |
1179 | ||
dfb9ae14 | 1180 | ctx.qc->as_server_state = 1; |
22d53c88 HL |
1181 | } |
1182 | ||
1183 | /* SSL_do_handshake */ | |
1184 | struct quic_handshake_wait_args { | |
1185 | QUIC_CONNECTION *qc; | |
1186 | }; | |
1187 | ||
1188 | static int quic_handshake_wait(void *arg) | |
1189 | { | |
1190 | struct quic_handshake_wait_args *args = arg; | |
1191 | ||
1192 | if (!ossl_quic_channel_is_active(args->qc->ch)) | |
1193 | return -1; | |
1194 | ||
1195 | if (ossl_quic_channel_is_handshake_complete(args->qc->ch)) | |
1196 | return 1; | |
1197 | ||
99e1cc7b TM |
1198 | return 0; |
1199 | } | |
1200 | ||
22d53c88 | 1201 | static int configure_channel(QUIC_CONNECTION *qc) |
99e1cc7b | 1202 | { |
22d53c88 | 1203 | assert(qc->ch != NULL); |
08e49012 | 1204 | |
d1ac77b1 HL |
1205 | if (!ossl_quic_channel_set_net_rbio(qc->ch, qc->net_rbio) |
1206 | || !ossl_quic_channel_set_net_wbio(qc->ch, qc->net_wbio) | |
22d53c88 HL |
1207 | || !ossl_quic_channel_set_peer_addr(qc->ch, &qc->init_peer_addr)) |
1208 | return 0; | |
1209 | ||
1210 | return 1; | |
1211 | } | |
1212 | ||
4847599b | 1213 | QUIC_NEEDS_LOCK |
23c04709 | 1214 | static int create_channel(QUIC_CONNECTION *qc) |
22d53c88 HL |
1215 | { |
1216 | QUIC_CHANNEL_ARGS args = {0}; | |
1217 | ||
5cf99b40 MC |
1218 | args.libctx = qc->ssl.ctx->libctx; |
1219 | args.propq = qc->ssl.ctx->propq; | |
1220 | args.is_server = qc->as_server; | |
1221 | args.tls = qc->tls; | |
1222 | args.mutex = qc->mutex; | |
e3e9794a HL |
1223 | args.now_cb = get_time_cb; |
1224 | args.now_cb_arg = qc; | |
22d53c88 HL |
1225 | |
1226 | qc->ch = ossl_quic_channel_new(&args); | |
1227 | if (qc->ch == NULL) | |
1228 | return 0; | |
1229 | ||
e8043229 HL |
1230 | return 1; |
1231 | } | |
1232 | ||
1233 | /* | |
1234 | * Creates a channel and configures it with the information we have accumulated | |
1235 | * via calls made to us from the application prior to starting a handshake | |
1236 | * attempt. | |
1237 | */ | |
4847599b | 1238 | QUIC_NEEDS_LOCK |
23c04709 | 1239 | static int ensure_channel_started(QUIC_CONNECTION *qc) |
e8043229 | 1240 | { |
ffce2946 | 1241 | if (!qc->started) { |
ffce2946 HL |
1242 | if (!configure_channel(qc) |
1243 | || !ossl_quic_channel_start(qc->ch)) | |
1244 | goto err; | |
f2f7c4f1 | 1245 | |
629b408c | 1246 | #if !defined(OPENSSL_NO_QUIC_THREAD_ASSIST) |
ffce2946 HL |
1247 | if (qc->is_thread_assisted) |
1248 | if (!ossl_quic_thread_assist_init_start(&qc->thread_assist, qc->ch)) | |
1249 | goto err; | |
629b408c | 1250 | #endif |
ffce2946 HL |
1251 | } |
1252 | ||
22d53c88 HL |
1253 | qc->started = 1; |
1254 | return 1; | |
f2f7c4f1 HL |
1255 | |
1256 | err: | |
1257 | ossl_quic_channel_free(qc->ch); | |
1258 | qc->ch = NULL; | |
1259 | return 0; | |
99e1cc7b TM |
1260 | } |
1261 | ||
4a530180 | 1262 | QUIC_NEEDS_LOCK |
faa3a180 | 1263 | static int quic_do_handshake(QCTX *ctx) |
99e1cc7b | 1264 | { |
22d53c88 | 1265 | int ret; |
faa3a180 | 1266 | QUIC_CONNECTION *qc = ctx->qc; |
22d53c88 | 1267 | |
23c04709 | 1268 | if (ossl_quic_channel_is_handshake_complete(qc->ch)) |
ca41f6b7 | 1269 | /* Handshake already completed. */ |
4a530180 | 1270 | return 1; |
ca41f6b7 | 1271 | |
23c04709 | 1272 | if (ossl_quic_channel_is_term_any(qc->ch)) |
faa3a180 | 1273 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
22d53c88 | 1274 | |
ca41f6b7 | 1275 | if (BIO_ADDR_family(&qc->init_peer_addr) == AF_UNSPEC) { |
22d53c88 | 1276 | /* Peer address must have been set. */ |
faa3a180 | 1277 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_REMOTE_PEER_ADDRESS_NOT_SET, NULL); |
4a530180 | 1278 | return -1; /* Non-protocol error */ |
ca41f6b7 | 1279 | } |
22d53c88 | 1280 | |
dfb9ae14 | 1281 | if (qc->as_server != qc->as_server_state) { |
23c04709 | 1282 | /* TODO(QUIC): Must match the method used to create the QCSO */ |
faa3a180 | 1283 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_PASSED_INVALID_ARGUMENT, NULL); |
4a530180 | 1284 | return -1; /* Non-protocol error */ |
ca41f6b7 | 1285 | } |
22d53c88 | 1286 | |
ca41f6b7 | 1287 | if (qc->net_rbio == NULL || qc->net_wbio == NULL) { |
22d53c88 | 1288 | /* Need read and write BIOs. */ |
faa3a180 | 1289 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_BIO_NOT_SET, NULL); |
4a530180 | 1290 | return -1; /* Non-protocol error */ |
ca41f6b7 | 1291 | } |
22d53c88 HL |
1292 | |
1293 | /* | |
1294 | * Start connection process. Note we may come here multiple times in | |
1295 | * non-blocking mode, which is fine. | |
1296 | */ | |
23c04709 | 1297 | if (!ensure_channel_started(qc)) { |
faa3a180 | 1298 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
4a530180 | 1299 | return -1; /* Non-protocol error */ |
ca41f6b7 | 1300 | } |
22d53c88 | 1301 | |
4a530180 | 1302 | if (ossl_quic_channel_is_handshake_complete(qc->ch)) |
22d53c88 | 1303 | /* The handshake is now done. */ |
4a530180 | 1304 | return 1; |
22d53c88 | 1305 | |
cb5c208b | 1306 | if (qc_blocking_mode(qc)) { |
22d53c88 HL |
1307 | /* In blocking mode, wait for the handshake to complete. */ |
1308 | struct quic_handshake_wait_args args; | |
1309 | ||
1310 | args.qc = qc; | |
1311 | ||
1312 | ret = block_until_pred(qc, quic_handshake_wait, &args, 0); | |
ca41f6b7 | 1313 | if (!ossl_quic_channel_is_active(qc->ch)) { |
faa3a180 | 1314 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
4a530180 | 1315 | return 0; /* Shutdown before completion */ |
ca41f6b7 | 1316 | } else if (ret <= 0) { |
faa3a180 | 1317 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
4a530180 | 1318 | return -1; /* Non-protocol error */ |
ca41f6b7 | 1319 | } |
22d53c88 HL |
1320 | |
1321 | assert(ossl_quic_channel_is_handshake_complete(qc->ch)); | |
4a530180 | 1322 | return 1; |
22d53c88 | 1323 | } else { |
ca41f6b7 | 1324 | /* Try to advance the reactor. */ |
ccd31037 | 1325 | ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(qc->ch), 0); |
ca41f6b7 | 1326 | |
4a530180 | 1327 | if (ossl_quic_channel_is_handshake_complete(qc->ch)) |
ca41f6b7 | 1328 | /* The handshake is now done. */ |
4a530180 | 1329 | return 1; |
ca41f6b7 | 1330 | |
22d53c88 | 1331 | /* Otherwise, indicate that the handshake isn't done yet. */ |
faa3a180 | 1332 | QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_READ); |
4a530180 | 1333 | return -1; /* Non-protocol error */ |
22d53c88 | 1334 | } |
4a530180 | 1335 | } |
a8489257 | 1336 | |
4a530180 | 1337 | QUIC_TAKES_LOCK |
072328dd | 1338 | int ossl_quic_do_handshake(SSL *s) |
4a530180 HL |
1339 | { |
1340 | int ret; | |
072328dd | 1341 | QCTX ctx; |
4a530180 | 1342 | |
072328dd HL |
1343 | if (!expect_quic(s, &ctx)) |
1344 | return 0; | |
1345 | ||
1346 | quic_lock(ctx.qc); | |
4a530180 | 1347 | |
faa3a180 | 1348 | ret = quic_do_handshake(&ctx); |
072328dd | 1349 | quic_unlock(ctx.qc); |
a8489257 | 1350 | return ret; |
99e1cc7b TM |
1351 | } |
1352 | ||
22d53c88 HL |
1353 | /* SSL_connect */ |
1354 | int ossl_quic_connect(SSL *s) | |
99e1cc7b | 1355 | { |
22d53c88 | 1356 | /* Ensure we are in connect state (no-op if non-idle). */ |
072328dd | 1357 | ossl_quic_set_connect_state(s); |
22d53c88 HL |
1358 | |
1359 | /* Begin or continue the handshake */ | |
072328dd | 1360 | return ossl_quic_do_handshake(s); |
99e1cc7b TM |
1361 | } |
1362 | ||
22d53c88 HL |
1363 | /* SSL_accept */ |
1364 | int ossl_quic_accept(SSL *s) | |
99e1cc7b | 1365 | { |
22d53c88 | 1366 | /* Ensure we are in accept state (no-op if non-idle). */ |
072328dd | 1367 | ossl_quic_set_accept_state(s); |
22d53c88 HL |
1368 | |
1369 | /* Begin or continue the handshake */ | |
072328dd | 1370 | return ossl_quic_do_handshake(s); |
99e1cc7b | 1371 | } |
e44795bd | 1372 | |
cb5c208b HL |
1373 | /* |
1374 | * QUIC Front-End I/O API: Stream Lifecycle Operations | |
1375 | * =================================================== | |
1376 | * | |
1377 | * SSL_stream_new => ossl_quic_conn_stream_new | |
1378 | * | |
1379 | */ | |
21c80696 HL |
1380 | |
1381 | /* | |
1382 | * Try to create the default XSO if it doesn't already exist. Returns 1 if the | |
1383 | * default XSO was created. Returns 0 if it was not (e.g. because it already | |
1384 | * exists). Note that this is NOT an error condition. | |
1385 | */ | |
1386 | QUIC_NEEDS_LOCK | |
faa3a180 | 1387 | static int qc_try_create_default_xso_for_write(QCTX *ctx) |
21c80696 | 1388 | { |
8b7be3aa | 1389 | uint64_t flags = 0; |
faa3a180 | 1390 | QUIC_CONNECTION *qc = ctx->qc; |
21c80696 | 1391 | |
8b7be3aa HL |
1392 | if (qc->default_xso_created |
1393 | || qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE) | |
21c80696 HL |
1394 | /* |
1395 | * We only do this once. If the user detaches a previously created | |
1396 | * default XSO we don't auto-create another one. | |
1397 | */ | |
faa3a180 | 1398 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_NO_STREAM, NULL); |
21c80696 | 1399 | |
8b7be3aa HL |
1400 | /* Create a locally-initiated stream. */ |
1401 | if (qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_AUTO_UNI) | |
1402 | flags |= SSL_STREAM_FLAG_UNI; | |
1403 | ||
faa3a180 | 1404 | qc_set_default_xso(qc, (QUIC_XSO *)quic_conn_stream_new(ctx, flags, |
13ac037d | 1405 | /*needs_lock=*/0), |
995ff282 | 1406 | /*touch=*/0); |
8b7be3aa | 1407 | if (qc->default_xso == NULL) |
faa3a180 | 1408 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
8b7be3aa | 1409 | |
995ff282 | 1410 | qc_touch_default_xso(qc); |
8b7be3aa HL |
1411 | return 1; |
1412 | } | |
1413 | ||
1414 | struct quic_wait_for_stream_args { | |
1415 | QUIC_CONNECTION *qc; | |
1416 | QUIC_STREAM *qs; | |
faa3a180 | 1417 | QCTX *ctx; |
8b7be3aa HL |
1418 | uint64_t expect_id; |
1419 | }; | |
1420 | ||
1421 | QUIC_NEEDS_LOCK | |
1422 | static int quic_wait_for_stream(void *arg) | |
1423 | { | |
1424 | struct quic_wait_for_stream_args *args = arg; | |
1425 | ||
1426 | if (!ossl_quic_channel_is_active(args->qc->ch)) { | |
1427 | /* If connection is torn down due to an error while blocking, stop. */ | |
faa3a180 | 1428 | QUIC_RAISE_NON_NORMAL_ERROR(args->ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
8b7be3aa HL |
1429 | return -1; |
1430 | } | |
1431 | ||
1432 | args->qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(args->qc->ch), | |
acc6fde0 HL |
1433 | args->expect_id | QUIC_STREAM_DIR_BIDI); |
1434 | if (args->qs == NULL) | |
1435 | args->qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(args->qc->ch), | |
1436 | args->expect_id | QUIC_STREAM_DIR_UNI); | |
1437 | ||
8b7be3aa HL |
1438 | if (args->qs != NULL) |
1439 | return 1; /* stream now exists */ | |
1440 | ||
1441 | return 0; /* did not get a stream, keep trying */ | |
1442 | } | |
1443 | ||
1444 | QUIC_NEEDS_LOCK | |
faa3a180 | 1445 | static int qc_wait_for_default_xso_for_read(QCTX *ctx) |
8b7be3aa HL |
1446 | { |
1447 | /* Called on a QCSO and we don't currently have a default stream. */ | |
1448 | uint64_t expect_id; | |
faa3a180 | 1449 | QUIC_CONNECTION *qc = ctx->qc; |
8b7be3aa HL |
1450 | QUIC_STREAM *qs; |
1451 | int res; | |
1452 | struct quic_wait_for_stream_args wargs; | |
1453 | ||
1454 | /* | |
1455 | * If default stream functionality is disabled or we already detached | |
1456 | * one, don't make another default stream and just fail. | |
1457 | */ | |
1458 | if (qc->default_xso_created | |
1459 | || qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE) | |
faa3a180 | 1460 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_NO_STREAM, NULL); |
8b7be3aa HL |
1461 | |
1462 | /* | |
1463 | * The peer may have opened a stream since we last ticked. So tick and | |
1464 | * see if the stream with ordinal 0 (remote, bidi/uni based on stream | |
1465 | * mode) exists yet. QUIC stream IDs must be allocated in order, so the | |
1466 | * first stream created by a peer must have an ordinal of 0. | |
1467 | */ | |
1468 | expect_id = qc->as_server | |
1469 | ? QUIC_STREAM_INITIATOR_CLIENT | |
1470 | : QUIC_STREAM_INITIATOR_SERVER; | |
1471 | ||
8b7be3aa | 1472 | qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(qc->ch), |
acc6fde0 HL |
1473 | expect_id | QUIC_STREAM_DIR_BIDI); |
1474 | if (qs == NULL) | |
1475 | qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(qc->ch), | |
1476 | expect_id | QUIC_STREAM_DIR_UNI); | |
1477 | ||
8b7be3aa HL |
1478 | if (qs == NULL) { |
1479 | ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(qc->ch), 0); | |
1480 | ||
1481 | qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(qc->ch), | |
1482 | expect_id); | |
1483 | } | |
1484 | ||
1485 | if (qs == NULL) { | |
1486 | if (!qc_blocking_mode(qc)) | |
1487 | /* Non-blocking mode, so just bail immediately. */ | |
faa3a180 | 1488 | return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_READ); |
8b7be3aa HL |
1489 | |
1490 | /* Block until we have a stream. */ | |
1491 | wargs.qc = qc; | |
1492 | wargs.qs = NULL; | |
faa3a180 | 1493 | wargs.ctx = ctx; |
8b7be3aa HL |
1494 | wargs.expect_id = expect_id; |
1495 | ||
1496 | res = block_until_pred(qc, quic_wait_for_stream, &wargs, 0); | |
1497 | if (res == 0) | |
faa3a180 | 1498 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
8b7be3aa HL |
1499 | else if (res < 0 || wargs.qs == NULL) |
1500 | /* quic_wait_for_stream raised error here */ | |
21c80696 | 1501 | return 0; |
8b7be3aa HL |
1502 | |
1503 | qs = wargs.qs; | |
21c80696 HL |
1504 | } |
1505 | ||
8b7be3aa HL |
1506 | /* |
1507 | * We now have qs != NULL. Make it the default stream, creating the | |
1508 | * necessary XSO. | |
1509 | */ | |
995ff282 | 1510 | qc_set_default_xso(qc, create_xso_from_stream(qc, qs), /*touch=*/0); |
8b7be3aa | 1511 | if (qc->default_xso == NULL) |
faa3a180 | 1512 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
8b7be3aa | 1513 | |
995ff282 | 1514 | qc_touch_default_xso(qc); /* inhibits default XSO */ |
21c80696 HL |
1515 | return 1; |
1516 | } | |
1517 | ||
1518 | QUIC_NEEDS_LOCK | |
1519 | static QUIC_XSO *create_xso_from_stream(QUIC_CONNECTION *qc, QUIC_STREAM *qs) | |
1520 | { | |
1521 | QUIC_XSO *xso = NULL; | |
1522 | ||
1523 | if ((xso = OPENSSL_zalloc(sizeof(*xso))) == NULL) | |
1524 | goto err; | |
1525 | ||
1526 | if (!ossl_ssl_init(&xso->ssl, qc->ssl.ctx, qc->ssl.method, SSL_TYPE_QUIC_XSO)) | |
1527 | goto err; | |
1528 | ||
9cab4bd5 HL |
1529 | /* XSO refs QC */ |
1530 | if (!SSL_up_ref(&qc->ssl)) | |
1531 | goto err; | |
1532 | ||
21c80696 HL |
1533 | xso->conn = qc; |
1534 | xso->blocking = qc->default_blocking; | |
1535 | xso->ssl_mode = qc->default_ssl_mode; | |
faa3a180 | 1536 | xso->last_error = SSL_ERROR_NONE; |
21c80696 HL |
1537 | |
1538 | xso->stream = qs; | |
1539 | ||
1540 | ++qc->num_xso; | |
1541 | return xso; | |
1542 | ||
1543 | err: | |
1544 | OPENSSL_free(xso); | |
1545 | return NULL; | |
1546 | } | |
1547 | ||
13ac037d | 1548 | /* locking depends on need_lock */ |
faa3a180 | 1549 | static SSL *quic_conn_stream_new(QCTX *ctx, uint64_t flags, int need_lock) |
cb5c208b | 1550 | { |
faa3a180 | 1551 | QUIC_CONNECTION *qc = ctx->qc; |
cb5c208b | 1552 | QUIC_XSO *xso = NULL; |
21c80696 | 1553 | QUIC_STREAM *qs = NULL; |
2dbc39de | 1554 | int is_uni = ((flags & SSL_STREAM_FLAG_UNI) != 0); |
cb5c208b | 1555 | |
13ac037d HL |
1556 | if (need_lock) |
1557 | quic_lock(qc); | |
2dbc39de | 1558 | |
13ac037d | 1559 | if (ossl_quic_channel_is_term_any(qc->ch)) { |
faa3a180 | 1560 | QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
2dbc39de HL |
1561 | goto err; |
1562 | } | |
1563 | ||
13ac037d | 1564 | qs = ossl_quic_channel_new_stream_local(qc->ch, is_uni); |
21c80696 | 1565 | if (qs == NULL) |
2dbc39de | 1566 | goto err; |
cb5c208b | 1567 | |
13ac037d | 1568 | xso = create_xso_from_stream(qc, qs); |
21c80696 | 1569 | if (xso == NULL) |
cb5c208b HL |
1570 | goto err; |
1571 | ||
13ac037d HL |
1572 | qc_touch_default_xso(qc); /* inhibits default XSO */ |
1573 | if (need_lock) | |
1574 | quic_unlock(qc); | |
1575 | ||
cb5c208b HL |
1576 | return &xso->ssl; |
1577 | ||
1578 | err: | |
1579 | OPENSSL_free(xso); | |
13ac037d HL |
1580 | ossl_quic_stream_map_release(ossl_quic_channel_get_qsm(qc->ch), qs); |
1581 | if (need_lock) | |
1582 | quic_unlock(qc); | |
1583 | ||
cb5c208b | 1584 | return NULL; |
13ac037d HL |
1585 | |
1586 | } | |
1587 | ||
1588 | QUIC_TAKES_LOCK | |
1589 | SSL *ossl_quic_conn_stream_new(SSL *s, uint64_t flags) | |
1590 | { | |
1591 | QCTX ctx; | |
1592 | ||
1593 | if (!expect_quic_conn_only(s, &ctx)) | |
1594 | return NULL; | |
1595 | ||
faa3a180 | 1596 | return quic_conn_stream_new(&ctx, flags, /*need_lock=*/1); |
cb5c208b HL |
1597 | } |
1598 | ||
22d53c88 HL |
1599 | /* |
1600 | * QUIC Front-End I/O API: Steady-State Operations | |
1601 | * =============================================== | |
1602 | * | |
1603 | * Here we dispatch calls to the steady-state front-end I/O API functions; that | |
1604 | * is, the functions used during the established phase of a QUIC connection | |
1605 | * (e.g. SSL_read, SSL_write). | |
1606 | * | |
1607 | * Each function must handle both blocking and non-blocking modes. As discussed | |
1608 | * above, all QUIC I/O is implemented using non-blocking mode internally. | |
1609 | * | |
1610 | * SSL_get_error => partially implemented by ossl_quic_get_error | |
1611 | * (BIO/)SSL_read => ossl_quic_read | |
1612 | * (BIO/)SSL_write => ossl_quic_write | |
1613 | * SSL_pending => ossl_quic_pending | |
a9979965 | 1614 | * SSL_stream_conclude => ossl_quic_conn_stream_conclude |
2525109f | 1615 | * SSL_key_update => ossl_quic_key_update |
22d53c88 HL |
1616 | */ |
1617 | ||
1618 | /* SSL_get_error */ | |
072328dd | 1619 | int ossl_quic_get_error(const SSL *s, int i) |
e44795bd | 1620 | { |
072328dd HL |
1621 | QCTX ctx; |
1622 | ||
1623 | if (!expect_quic(s, &ctx)) | |
1624 | return 0; | |
1625 | ||
faa3a180 | 1626 | return ctx.is_stream ? ctx.xso->last_error : ctx.qc->last_error; |
e44795bd TM |
1627 | } |
1628 | ||
22d53c88 HL |
1629 | /* |
1630 | * SSL_write | |
1631 | * --------- | |
1632 | * | |
1633 | * The set of functions below provide the implementation of the public SSL_write | |
1634 | * function. We must handle: | |
1635 | * | |
1636 | * - both blocking and non-blocking operation at the application level, | |
1637 | * depending on how we are configured; | |
1638 | * | |
1639 | * - SSL_MODE_ENABLE_PARTIAL_WRITE being on or off; | |
1640 | * | |
1641 | * - SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER. | |
1642 | * | |
1643 | */ | |
4847599b | 1644 | QUIC_NEEDS_LOCK |
cb5c208b | 1645 | static void quic_post_write(QUIC_XSO *xso, int did_append, int do_tick) |
22d53c88 HL |
1646 | { |
1647 | /* | |
1648 | * We have appended at least one byte to the stream. | |
1649 | * Potentially mark stream as active, depending on FC. | |
1650 | */ | |
1651 | if (did_append) | |
cb5c208b HL |
1652 | ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(xso->conn->ch), |
1653 | xso->stream); | |
22d53c88 HL |
1654 | |
1655 | /* | |
1656 | * Try and send. | |
1657 | * | |
1658 | * TODO(QUIC): It is probably inefficient to try and do this immediately, | |
1659 | * plus we should eventually consider Nagle's algorithm. | |
1660 | */ | |
1661 | if (do_tick) | |
cb5c208b | 1662 | ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(xso->conn->ch), 0); |
22d53c88 HL |
1663 | } |
1664 | ||
1665 | struct quic_write_again_args { | |
cb5c208b | 1666 | QUIC_XSO *xso; |
22d53c88 HL |
1667 | const unsigned char *buf; |
1668 | size_t len; | |
1669 | size_t total_written; | |
1670 | }; | |
1671 | ||
4847599b | 1672 | QUIC_NEEDS_LOCK |
22d53c88 HL |
1673 | static int quic_write_again(void *arg) |
1674 | { | |
1675 | struct quic_write_again_args *args = arg; | |
1676 | size_t actual_written = 0; | |
1677 | ||
cb5c208b | 1678 | if (!ossl_quic_channel_is_active(args->xso->conn->ch)) |
22d53c88 HL |
1679 | /* If connection is torn down due to an error while blocking, stop. */ |
1680 | return -2; | |
1681 | ||
cb5c208b | 1682 | if (!ossl_quic_sstream_append(args->xso->stream->sstream, |
22d53c88 HL |
1683 | args->buf, args->len, &actual_written)) |
1684 | return -2; | |
1685 | ||
cb5c208b | 1686 | quic_post_write(args->xso, actual_written > 0, 0); |
22d53c88 HL |
1687 | |
1688 | args->buf += actual_written; | |
1689 | args->len -= actual_written; | |
1690 | args->total_written += actual_written; | |
1691 | ||
3f0c310b | 1692 | if (args->len == 0) |
22d53c88 HL |
1693 | /* Written everything, done. */ |
1694 | return 1; | |
1695 | ||
1696 | /* Not written everything yet, keep trying. */ | |
1697 | return 0; | |
1698 | } | |
1699 | ||
4847599b | 1700 | QUIC_NEEDS_LOCK |
faa3a180 | 1701 | static int quic_write_blocking(QCTX *ctx, const void *buf, size_t len, |
22d53c88 | 1702 | size_t *written) |
e44795bd | 1703 | { |
22d53c88 | 1704 | int res; |
faa3a180 | 1705 | QUIC_XSO *xso = ctx->xso; |
22d53c88 HL |
1706 | struct quic_write_again_args args; |
1707 | size_t actual_written = 0; | |
1708 | ||
1709 | /* First make a best effort to append as much of the data as possible. */ | |
cb5c208b | 1710 | if (!ossl_quic_sstream_append(xso->stream->sstream, buf, len, |
22d53c88 HL |
1711 | &actual_written)) { |
1712 | /* Stream already finished or allocation error. */ | |
1713 | *written = 0; | |
faa3a180 | 1714 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1715 | } |
1716 | ||
cb5c208b | 1717 | quic_post_write(xso, actual_written > 0, 1); |
22d53c88 HL |
1718 | |
1719 | if (actual_written == len) { | |
1720 | /* Managed to append everything on the first try. */ | |
1721 | *written = actual_written; | |
1722 | return 1; | |
1723 | } | |
1724 | ||
1725 | /* | |
1726 | * We did not manage to append all of the data immediately, so the stream | |
1727 | * buffer has probably filled up. This means we need to block until some of | |
1728 | * it is freed up. | |
1729 | */ | |
cb5c208b | 1730 | args.xso = xso; |
22d53c88 HL |
1731 | args.buf = (const unsigned char *)buf + actual_written; |
1732 | args.len = len - actual_written; | |
1733 | args.total_written = 0; | |
1734 | ||
cb5c208b | 1735 | res = block_until_pred(xso->conn, quic_write_again, &args, 0); |
22d53c88 | 1736 | if (res <= 0) { |
cb5c208b | 1737 | if (!ossl_quic_channel_is_active(xso->conn->ch)) |
faa3a180 | 1738 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
22d53c88 | 1739 | else |
faa3a180 | 1740 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1741 | } |
1742 | ||
1743 | *written = args.total_written; | |
e44795bd TM |
1744 | return 1; |
1745 | } | |
1746 | ||
ca41f6b7 HL |
1747 | /* |
1748 | * Functions to manage All-or-Nothing (AON) (that is, non-ENABLE_PARTIAL_WRITE) | |
1749 | * write semantics. | |
1750 | */ | |
cb5c208b | 1751 | static void aon_write_begin(QUIC_XSO *xso, const unsigned char *buf, |
22d53c88 HL |
1752 | size_t buf_len, size_t already_sent) |
1753 | { | |
cb5c208b | 1754 | assert(!xso->aon_write_in_progress); |
22d53c88 | 1755 | |
cb5c208b HL |
1756 | xso->aon_write_in_progress = 1; |
1757 | xso->aon_buf_base = buf; | |
1758 | xso->aon_buf_pos = already_sent; | |
1759 | xso->aon_buf_len = buf_len; | |
22d53c88 HL |
1760 | } |
1761 | ||
cb5c208b | 1762 | static void aon_write_finish(QUIC_XSO *xso) |
22d53c88 | 1763 | { |
cb5c208b HL |
1764 | xso->aon_write_in_progress = 0; |
1765 | xso->aon_buf_base = NULL; | |
1766 | xso->aon_buf_pos = 0; | |
1767 | xso->aon_buf_len = 0; | |
22d53c88 HL |
1768 | } |
1769 | ||
4847599b | 1770 | QUIC_NEEDS_LOCK |
faa3a180 | 1771 | static int quic_write_nonblocking_aon(QCTX *ctx, const void *buf, |
22d53c88 | 1772 | size_t len, size_t *written) |
e44795bd | 1773 | { |
faa3a180 | 1774 | QUIC_XSO *xso = ctx->xso; |
22d53c88 HL |
1775 | const void *actual_buf; |
1776 | size_t actual_len, actual_written = 0; | |
1777 | int accept_moving_buffer | |
cb5c208b | 1778 | = ((xso->ssl_mode & SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER) != 0); |
22d53c88 | 1779 | |
cb5c208b | 1780 | if (xso->aon_write_in_progress) { |
22d53c88 HL |
1781 | /* |
1782 | * We are in the middle of an AON write (i.e., a previous write did not | |
75b2920a HL |
1783 | * manage to append all data to the SSTREAM and we have Enable Partial |
1784 | * Write (EPW) mode disabled.) | |
22d53c88 | 1785 | */ |
cb5c208b HL |
1786 | if ((!accept_moving_buffer && xso->aon_buf_base != buf) |
1787 | || len != xso->aon_buf_len) | |
22d53c88 HL |
1788 | /* |
1789 | * Pointer must not have changed if we are not in accept moving | |
1790 | * buffer mode. Length must never change. | |
1791 | */ | |
faa3a180 | 1792 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, SSL_R_BAD_WRITE_RETRY, NULL); |
22d53c88 | 1793 | |
cb5c208b HL |
1794 | actual_buf = (unsigned char *)buf + xso->aon_buf_pos; |
1795 | actual_len = len - xso->aon_buf_pos; | |
22d53c88 HL |
1796 | assert(actual_len > 0); |
1797 | } else { | |
1798 | actual_buf = buf; | |
1799 | actual_len = len; | |
1800 | } | |
1801 | ||
1802 | /* First make a best effort to append as much of the data as possible. */ | |
cb5c208b | 1803 | if (!ossl_quic_sstream_append(xso->stream->sstream, actual_buf, actual_len, |
22d53c88 HL |
1804 | &actual_written)) { |
1805 | /* Stream already finished or allocation error. */ | |
1806 | *written = 0; | |
faa3a180 | 1807 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1808 | } |
1809 | ||
cb5c208b | 1810 | quic_post_write(xso, actual_written > 0, 1); |
22d53c88 HL |
1811 | |
1812 | if (actual_written == actual_len) { | |
1813 | /* We have sent everything. */ | |
cb5c208b | 1814 | if (xso->aon_write_in_progress) { |
22d53c88 HL |
1815 | /* |
1816 | * We have sent everything, and we were in the middle of an AON | |
1817 | * write. The output write length is the total length of the AON | |
1818 | * buffer, not however many bytes we managed to write to the stream | |
1819 | * in this call. | |
1820 | */ | |
cb5c208b HL |
1821 | *written = xso->aon_buf_len; |
1822 | aon_write_finish(xso); | |
22d53c88 HL |
1823 | } else { |
1824 | *written = actual_written; | |
1825 | } | |
1826 | ||
1827 | return 1; | |
1828 | } | |
1829 | ||
cb5c208b | 1830 | if (xso->aon_write_in_progress) { |
22d53c88 HL |
1831 | /* |
1832 | * AON write is in progress but we have not written everything yet. We | |
1833 | * may have managed to send zero bytes, or some number of bytes less | |
1834 | * than the total remaining which need to be appended during this | |
1835 | * AON operation. | |
1836 | */ | |
cb5c208b HL |
1837 | xso->aon_buf_pos += actual_written; |
1838 | assert(xso->aon_buf_pos < xso->aon_buf_len); | |
faa3a180 | 1839 | return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_WRITE); |
22d53c88 HL |
1840 | } |
1841 | ||
08e49012 | 1842 | /* |
22d53c88 HL |
1843 | * Not in an existing AON operation but partial write is not enabled, so we |
1844 | * need to begin a new AON operation. However we needn't bother if we didn't | |
1845 | * actually append anything. | |
08e49012 | 1846 | */ |
22d53c88 | 1847 | if (actual_written > 0) |
cb5c208b | 1848 | aon_write_begin(xso, buf, len, actual_written); |
e44795bd | 1849 | |
22d53c88 HL |
1850 | /* |
1851 | * AON - We do not publicly admit to having appended anything until AON | |
1852 | * completes. | |
1853 | */ | |
1854 | *written = 0; | |
faa3a180 | 1855 | return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_WANT_WRITE); |
e44795bd TM |
1856 | } |
1857 | ||
4847599b | 1858 | QUIC_NEEDS_LOCK |
faa3a180 | 1859 | static int quic_write_nonblocking_epw(QCTX *ctx, const void *buf, size_t len, |
22d53c88 | 1860 | size_t *written) |
e44795bd | 1861 | { |
faa3a180 HL |
1862 | QUIC_XSO *xso = ctx->xso; |
1863 | ||
22d53c88 | 1864 | /* Simple best effort operation. */ |
cb5c208b | 1865 | if (!ossl_quic_sstream_append(xso->stream->sstream, buf, len, written)) { |
22d53c88 HL |
1866 | /* Stream already finished or allocation error. */ |
1867 | *written = 0; | |
faa3a180 | 1868 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1869 | } |
1870 | ||
cb5c208b | 1871 | quic_post_write(xso, *written > 0, 1); |
e44795bd TM |
1872 | return 1; |
1873 | } | |
d5ab48a1 | 1874 | |
a8489257 | 1875 | QUIC_TAKES_LOCK |
22d53c88 | 1876 | int ossl_quic_write(SSL *s, const void *buf, size_t len, size_t *written) |
d5ab48a1 | 1877 | { |
a8489257 | 1878 | int ret; |
072328dd HL |
1879 | QCTX ctx; |
1880 | int partial_write; | |
22d53c88 HL |
1881 | |
1882 | *written = 0; | |
1883 | ||
8b7be3aa HL |
1884 | if (len == 0) |
1885 | return 1; | |
22d53c88 | 1886 | |
8b7be3aa HL |
1887 | if (!expect_quic_with_stream_lock(s, /*remote_init=*/0, &ctx)) |
1888 | return 0; | |
a8489257 | 1889 | |
cb5c208b | 1890 | partial_write = ((ctx.xso->ssl_mode & SSL_MODE_ENABLE_PARTIAL_WRITE) != 0); |
072328dd | 1891 | |
23c04709 | 1892 | if (ossl_quic_channel_is_term_any(ctx.qc->ch)) { |
faa3a180 | 1893 | ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
a8489257 HL |
1894 | goto out; |
1895 | } | |
22d53c88 | 1896 | |
ca41f6b7 HL |
1897 | /* |
1898 | * If we haven't finished the handshake, try to advance it. | |
1899 | * We don't accept writes until the handshake is completed. | |
1900 | */ | |
faa3a180 | 1901 | if (quic_do_handshake(&ctx) < 1) { |
a8489257 HL |
1902 | ret = 0; |
1903 | goto out; | |
1904 | } | |
ca41f6b7 | 1905 | |
cb5c208b | 1906 | if (ctx.xso->stream == NULL || ctx.xso->stream->sstream == NULL) { |
faa3a180 | 1907 | ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL); |
a8489257 HL |
1908 | goto out; |
1909 | } | |
22d53c88 | 1910 | |
cb5c208b | 1911 | if (xso_blocking_mode(ctx.xso)) |
faa3a180 | 1912 | ret = quic_write_blocking(&ctx, buf, len, written); |
22d53c88 | 1913 | else if (partial_write) |
faa3a180 | 1914 | ret = quic_write_nonblocking_epw(&ctx, buf, len, written); |
22d53c88 | 1915 | else |
faa3a180 | 1916 | ret = quic_write_nonblocking_aon(&ctx, buf, len, written); |
a8489257 HL |
1917 | |
1918 | out: | |
072328dd | 1919 | quic_unlock(ctx.qc); |
a8489257 | 1920 | return ret; |
d5ab48a1 RL |
1921 | } |
1922 | ||
1923 | /* | |
22d53c88 HL |
1924 | * SSL_read |
1925 | * -------- | |
d5ab48a1 | 1926 | */ |
22d53c88 | 1927 | struct quic_read_again_args { |
faa3a180 | 1928 | QCTX *ctx; |
22d53c88 HL |
1929 | QUIC_STREAM *stream; |
1930 | void *buf; | |
1931 | size_t len; | |
1932 | size_t *bytes_read; | |
1933 | int peek; | |
1934 | }; | |
1935 | ||
4847599b | 1936 | QUIC_NEEDS_LOCK |
faa3a180 | 1937 | static int quic_read_actual(QCTX *ctx, |
22d53c88 HL |
1938 | QUIC_STREAM *stream, |
1939 | void *buf, size_t buf_len, | |
1940 | size_t *bytes_read, | |
1941 | int peek) | |
d5ab48a1 | 1942 | { |
22d53c88 | 1943 | int is_fin = 0; |
faa3a180 | 1944 | QUIC_CONNECTION *qc = ctx->qc; |
22d53c88 | 1945 | |
a9979965 HL |
1946 | /* If the receive part of the stream is over, issue EOF. */ |
1947 | if (stream->recv_fin_retired) | |
faa3a180 | 1948 | return QUIC_RAISE_NORMAL_ERROR(ctx, SSL_ERROR_ZERO_RETURN); |
a9979965 | 1949 | |
22d53c88 | 1950 | if (stream->rstream == NULL) |
faa3a180 | 1951 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1952 | |
1953 | if (peek) { | |
1954 | if (!ossl_quic_rstream_peek(stream->rstream, buf, buf_len, | |
1955 | bytes_read, &is_fin)) | |
faa3a180 | 1956 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1957 | |
1958 | } else { | |
1959 | if (!ossl_quic_rstream_read(stream->rstream, buf, buf_len, | |
1960 | bytes_read, &is_fin)) | |
faa3a180 | 1961 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1962 | } |
1963 | ||
1964 | if (!peek) { | |
1965 | if (*bytes_read > 0) { | |
1966 | /* | |
1967 | * We have read at least one byte from the stream. Inform stream-level | |
1968 | * RXFC of the retirement of controlled bytes. Update the active stream | |
1969 | * status (the RXFC may now want to emit a frame granting more credit to | |
1970 | * the peer). | |
1971 | */ | |
1972 | OSSL_RTT_INFO rtt_info; | |
d50e750e | 1973 | |
22d53c88 HL |
1974 | ossl_statm_get_rtt_info(ossl_quic_channel_get_statm(qc->ch), &rtt_info); |
1975 | ||
cb5c208b | 1976 | if (!ossl_quic_rxfc_on_retire(&stream->rxfc, *bytes_read, |
22d53c88 | 1977 | rtt_info.smoothed_rtt)) |
faa3a180 | 1978 | return QUIC_RAISE_NON_NORMAL_ERROR(ctx, ERR_R_INTERNAL_ERROR, NULL); |
22d53c88 HL |
1979 | } |
1980 | ||
1981 | if (is_fin) | |
1982 | stream->recv_fin_retired = 1; | |
1983 | ||
1984 | if (*bytes_read > 0) | |
1985 | ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(qc->ch), | |
cb5c208b | 1986 | stream); |
22d53c88 HL |
1987 | } |
1988 | ||
d5ab48a1 RL |
1989 | return 1; |
1990 | } | |
1991 | ||
4847599b | 1992 | QUIC_NEEDS_LOCK |
22d53c88 | 1993 | static int quic_read_again(void *arg) |
d5ab48a1 | 1994 | { |
22d53c88 HL |
1995 | struct quic_read_again_args *args = arg; |
1996 | ||
faa3a180 | 1997 | if (!ossl_quic_channel_is_active(args->ctx->qc->ch)) { |
22d53c88 | 1998 | /* If connection is torn down due to an error while blocking, stop. */ |
faa3a180 | 1999 | QUIC_RAISE_NON_NORMAL_ERROR(args->ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
ca41f6b7 | 2000 | return -1; |
a9979965 | 2001 | } |
22d53c88 | 2002 | |
faa3a180 | 2003 | if (!quic_read_actual(args->ctx, args->stream, |
22d53c88 HL |
2004 | args->buf, args->len, args->bytes_read, |
2005 | args->peek)) | |
2006 | return -1; | |
2007 | ||
2008 | if (*args->bytes_read > 0) | |
2009 | /* got at least one byte, the SSL_read op can finish now */ | |
2010 | return 1; | |
2011 | ||
81b6b43c | 2012 | return 0; /* did not read anything, keep trying */ |
d5ab48a1 RL |
2013 | } |
2014 | ||
a8489257 | 2015 | QUIC_TAKES_LOCK |
22d53c88 | 2016 | static int quic_read(SSL *s, void *buf, size_t len, size_t *bytes_read, int peek) |
d5ab48a1 | 2017 | { |
a8489257 | 2018 | int ret, res; |
072328dd | 2019 | QCTX ctx; |
22d53c88 HL |
2020 | struct quic_read_again_args args; |
2021 | ||
2022 | *bytes_read = 0; | |
2023 | ||
8b7be3aa | 2024 | if (!expect_quic(s, &ctx)) |
22d53c88 HL |
2025 | return 0; |
2026 | ||
072328dd | 2027 | quic_lock(ctx.qc); |
a8489257 | 2028 | |
23c04709 | 2029 | if (ossl_quic_channel_is_term_any(ctx.qc->ch)) { |
faa3a180 | 2030 | ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
a8489257 HL |
2031 | goto out; |
2032 | } | |
22d53c88 | 2033 | |
a9979965 | 2034 | /* If we haven't finished the handshake, try to advance it. */ |
faa3a180 | 2035 | if (quic_do_handshake(&ctx) < 1) { |
a8489257 HL |
2036 | ret = 0; /* ossl_quic_do_handshake raised error here */ |
2037 | goto out; | |
2038 | } | |
22d53c88 | 2039 | |
8b7be3aa HL |
2040 | if (ctx.xso == NULL) { |
2041 | /* | |
2042 | * Called on a QCSO and we don't currently have a default stream. | |
2043 | * | |
2044 | * Wait until we get a stream initiated by the peer (blocking mode) or | |
2045 | * fail if we don't have one yet (non-blocking mode). | |
2046 | */ | |
faa3a180 | 2047 | if (!qc_wait_for_default_xso_for_read(&ctx)) { |
8b7be3aa HL |
2048 | ret = 0; /* error already raised here */ |
2049 | goto out; | |
2050 | } | |
2051 | ||
2052 | ctx.xso = ctx.qc->default_xso; | |
2053 | } | |
2054 | ||
cb5c208b | 2055 | if (ctx.xso->stream == NULL) { |
faa3a180 | 2056 | ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL); |
a8489257 HL |
2057 | goto out; |
2058 | } | |
22d53c88 | 2059 | |
faa3a180 | 2060 | if (!quic_read_actual(&ctx, ctx.xso->stream, buf, len, bytes_read, peek)) { |
a8489257 HL |
2061 | ret = 0; /* quic_read_actual raised error here */ |
2062 | goto out; | |
2063 | } | |
22d53c88 HL |
2064 | |
2065 | if (*bytes_read > 0) { | |
2066 | /* | |
2067 | * Even though we succeeded, tick the reactor here to ensure we are | |
2068 | * handling other aspects of the QUIC connection. | |
2069 | */ | |
072328dd | 2070 | ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(ctx.qc->ch), 0); |
a8489257 | 2071 | ret = 1; |
cb5c208b | 2072 | } else if (xso_blocking_mode(ctx.xso)) { |
22d53c88 HL |
2073 | /* |
2074 | * We were not able to read anything immediately, so our stream | |
2075 | * buffer is empty. This means we need to block until we get | |
2076 | * at least one byte. | |
2077 | */ | |
faa3a180 | 2078 | args.ctx = &ctx; |
cb5c208b | 2079 | args.stream = ctx.xso->stream; |
22d53c88 HL |
2080 | args.buf = buf; |
2081 | args.len = len; | |
2082 | args.bytes_read = bytes_read; | |
2083 | args.peek = peek; | |
2084 | ||
072328dd | 2085 | res = block_until_pred(ctx.qc, quic_read_again, &args, 0); |
a8489257 | 2086 | if (res == 0) { |
faa3a180 | 2087 | ret = QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL); |
a8489257 HL |
2088 | goto out; |
2089 | } else if (res < 0) { | |
2090 | ret = 0; /* quic_read_again raised error here */ | |
2091 | goto out; | |
2092 | } | |
22d53c88 | 2093 | |
a8489257 | 2094 | ret = 1; |
af8b52cf HL |
2095 | } else { |
2096 | /* We did not get any bytes and are not in blocking mode. */ | |
faa3a180 | 2097 | ret = QUIC_RAISE_NORMAL_ERROR(&ctx, SSL_ERROR_WANT_READ); |
af8b52cf | 2098 | } |
a8489257 HL |
2099 | |
2100 | out: | |
072328dd | 2101 | quic_unlock(ctx.qc); |
a8489257 | 2102 | return ret; |
d5ab48a1 RL |
2103 | } |
2104 | ||
22d53c88 HL |
2105 | int ossl_quic_read(SSL *s, void *buf, size_t len, size_t *bytes_read) |
2106 | { | |
2107 | return quic_read(s, buf, len, bytes_read, 0); | |
2108 | } | |
2109 | ||
2110 | int ossl_quic_peek(SSL *s, void *buf, size_t len, size_t *bytes_read) | |
2111 | { | |
2112 | return quic_read(s, buf, len, bytes_read, 1); | |
2113 | } | |
2114 | ||
2115 | /* | |
2116 | * SSL_pending | |
2117 | * ----------- | |
2118 | */ | |
a8489257 | 2119 | QUIC_TAKES_LOCK |
072328dd | 2120 | static size_t ossl_quic_pending_int(const SSL *s) |
22d53c88 | 2121 | { |
072328dd | 2122 | QCTX ctx; |
433d107a | 2123 | size_t avail = 0; |
22d53c88 HL |
2124 | int fin = 0; |
2125 | ||
8b7be3aa | 2126 | if (!expect_quic_with_stream_lock(s, /*remote_init=*/-1, &ctx)) |
22d53c88 HL |
2127 | return 0; |
2128 | ||
cb5c208b | 2129 | if (ctx.xso->stream == NULL || ctx.xso->stream->rstream == NULL) |
22d53c88 | 2130 | /* Cannot raise errors here because we are const, just fail. */ |
a8489257 | 2131 | goto out; |
22d53c88 | 2132 | |
cb5c208b | 2133 | if (!ossl_quic_rstream_available(ctx.xso->stream->rstream, &avail, &fin)) |
a8489257 | 2134 | avail = 0; |
22d53c88 | 2135 | |
a8489257 | 2136 | out: |
072328dd | 2137 | quic_unlock(ctx.qc); |
22d53c88 HL |
2138 | return avail; |
2139 | } | |
2140 | ||
560470b5 MC |
2141 | size_t ossl_quic_pending(const SSL *s) |
2142 | { | |
072328dd | 2143 | return ossl_quic_pending_int(s); |
560470b5 MC |
2144 | } |
2145 | ||
072328dd | 2146 | int ossl_quic_has_pending(const SSL *s) |
560470b5 | 2147 | { |
072328dd | 2148 | return ossl_quic_pending_int(s) > 0; |
560470b5 MC |
2149 | } |
2150 | ||
a9979965 HL |
2151 | /* |
2152 | * SSL_stream_conclude | |
2153 | * ------------------- | |
2154 | */ | |
a8489257 | 2155 | QUIC_TAKES_LOCK |
072328dd | 2156 | int ossl_quic_conn_stream_conclude(SSL *s) |
a9979965 | 2157 | { |
072328dd HL |
2158 | QCTX ctx; |
2159 | QUIC_STREAM *qs; | |
2160 | ||
8b7be3aa | 2161 | if (!expect_quic_with_stream_lock(s, /*remote_init=*/0, &ctx)) |
072328dd HL |
2162 | return 0; |
2163 | ||
cb5c208b | 2164 | qs = ctx.xso->stream; |
a9979965 | 2165 | |
a8489257 | 2166 | if (qs == NULL || qs->sstream == NULL) { |
072328dd | 2167 | quic_unlock(ctx.qc); |
a8489257 HL |
2168 | return 0; |
2169 | } | |
2170 | ||
072328dd | 2171 | if (!ossl_quic_channel_is_active(ctx.qc->ch) |
a8489257 | 2172 | || ossl_quic_sstream_get_final_size(qs->sstream, NULL)) { |
072328dd | 2173 | quic_unlock(ctx.qc); |
a9979965 | 2174 | return 1; |
a8489257 | 2175 | } |
a9979965 HL |
2176 | |
2177 | ossl_quic_sstream_fin(qs->sstream); | |
cb5c208b | 2178 | quic_post_write(ctx.xso, 1, 1); |
072328dd | 2179 | quic_unlock(ctx.qc); |
a9979965 HL |
2180 | return 1; |
2181 | } | |
2182 | ||
553a4e00 HL |
2183 | /* |
2184 | * SSL_inject_net_dgram | |
2185 | * -------------------- | |
2186 | */ | |
5129e594 | 2187 | QUIC_TAKES_LOCK |
553a4e00 HL |
2188 | int SSL_inject_net_dgram(SSL *s, const unsigned char *buf, |
2189 | size_t buf_len, | |
2190 | const BIO_ADDR *peer, | |
2191 | const BIO_ADDR *local) | |
2192 | { | |
5129e594 | 2193 | int ret; |
072328dd | 2194 | QCTX ctx; |
553a4e00 HL |
2195 | QUIC_DEMUX *demux; |
2196 | ||
072328dd | 2197 | if (!expect_quic(s, &ctx)) |
553a4e00 HL |
2198 | return 0; |
2199 | ||
072328dd | 2200 | quic_lock(ctx.qc); |
5129e594 | 2201 | |
072328dd | 2202 | demux = ossl_quic_channel_get0_demux(ctx.qc->ch); |
5129e594 HL |
2203 | ret = ossl_quic_demux_inject(demux, buf, buf_len, peer, local); |
2204 | ||
072328dd | 2205 | quic_unlock(ctx.qc); |
5129e594 | 2206 | return ret; |
553a4e00 HL |
2207 | } |
2208 | ||
020d0389 HL |
2209 | /* |
2210 | * SSL_get0_connection | |
2211 | * ------------------- | |
2212 | */ | |
2213 | SSL *ossl_quic_get0_connection(SSL *s) | |
2214 | { | |
2215 | QCTX ctx; | |
2216 | ||
2217 | if (!expect_quic(s, &ctx)) | |
2218 | return NULL; | |
2219 | ||
2220 | return &ctx.qc->ssl; | |
2221 | } | |
2222 | ||
1bca3f1b HL |
2223 | /* |
2224 | * SSL_get_stream_type | |
2225 | * ------------------- | |
2226 | */ | |
2227 | int ossl_quic_get_stream_type(SSL *s) | |
2228 | { | |
2229 | QCTX ctx; | |
2230 | ||
2231 | if (!expect_quic(s, &ctx)) | |
59c5c016 | 2232 | return SSL_STREAM_TYPE_BIDI; |
1bca3f1b HL |
2233 | |
2234 | if (ctx.xso == NULL) { | |
2235 | /* | |
59c5c016 HL |
2236 | * If deferred XSO creation has yet to occur, proceed according to the |
2237 | * default stream mode. If AUTO_BIDI or AUTO_UNI is set, we cannot know | |
2238 | * what kind of stream will be created yet, so return BIDI on the basis | |
2239 | * that at this time, the client still has the option of calling | |
2240 | * SSL_read() or SSL_write() first. | |
1bca3f1b | 2241 | */ |
59c5c016 HL |
2242 | if (ctx.qc->default_xso_created |
2243 | || ctx.qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE) | |
1bca3f1b | 2244 | return SSL_STREAM_TYPE_NONE; |
59c5c016 HL |
2245 | else |
2246 | return SSL_STREAM_TYPE_BIDI; | |
1bca3f1b HL |
2247 | } |
2248 | ||
2249 | if (ossl_quic_stream_is_bidi(ctx.xso->stream)) | |
2250 | return SSL_STREAM_TYPE_BIDI; | |
2251 | ||
2252 | if (ossl_quic_stream_is_server_init(ctx.xso->stream) != ctx.qc->as_server) | |
2253 | return SSL_STREAM_TYPE_READ; | |
2254 | else | |
2255 | return SSL_STREAM_TYPE_WRITE; | |
2256 | } | |
2257 | ||
19cb0887 HL |
2258 | /* |
2259 | * SSL_get_stream_id | |
2260 | * ----------------- | |
2261 | */ | |
cb68ce9f | 2262 | QUIC_TAKES_LOCK |
19cb0887 HL |
2263 | uint64_t ossl_quic_get_stream_id(SSL *s) |
2264 | { | |
2265 | QCTX ctx; | |
8b7be3aa | 2266 | uint64_t id; |
19cb0887 | 2267 | |
8b7be3aa | 2268 | if (!expect_quic_with_stream_lock(s, /*remote_init=*/-1, &ctx)) |
19cb0887 HL |
2269 | return UINT64_MAX; |
2270 | ||
8b7be3aa HL |
2271 | id = ctx.xso->stream->id; |
2272 | quic_unlock(ctx.qc); | |
2273 | ||
2274 | return id; | |
2275 | } | |
2276 | ||
2277 | /* | |
2278 | * SSL_set_default_stream_mode | |
2279 | * --------------------------- | |
2280 | */ | |
cb68ce9f | 2281 | QUIC_TAKES_LOCK |
8b7be3aa HL |
2282 | int ossl_quic_set_default_stream_mode(SSL *s, uint32_t mode) |
2283 | { | |
2284 | QCTX ctx; | |
2285 | ||
2286 | if (!expect_quic_conn_only(s, &ctx)) | |
2287 | return 0; | |
2288 | ||
2289 | quic_lock(ctx.qc); | |
2290 | ||
2291 | if (ctx.qc->default_xso_created) | |
faa3a180 | 2292 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, |
8b7be3aa HL |
2293 | "too late to change default stream mode"); |
2294 | ||
2295 | switch (mode) { | |
2296 | case SSL_DEFAULT_STREAM_MODE_NONE: | |
2297 | case SSL_DEFAULT_STREAM_MODE_AUTO_BIDI: | |
2298 | case SSL_DEFAULT_STREAM_MODE_AUTO_UNI: | |
2299 | ctx.qc->default_stream_mode = mode; | |
2300 | break; | |
2301 | default: | |
2302 | quic_unlock(ctx.qc); | |
faa3a180 | 2303 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT, |
8b7be3aa HL |
2304 | "bad default stream type"); |
2305 | } | |
2306 | ||
2307 | quic_unlock(ctx.qc); | |
2308 | return 1; | |
2309 | } | |
2310 | ||
2311 | /* | |
2312 | * SSL_detach_stream | |
2313 | * ----------------- | |
2314 | */ | |
cb68ce9f | 2315 | QUIC_TAKES_LOCK |
8b7be3aa HL |
2316 | SSL *ossl_quic_detach_stream(SSL *s) |
2317 | { | |
2318 | QCTX ctx; | |
9cab4bd5 | 2319 | QUIC_XSO *xso = NULL; |
8b7be3aa HL |
2320 | |
2321 | if (!expect_quic_conn_only(s, &ctx)) | |
2322 | return NULL; | |
2323 | ||
2324 | quic_lock(ctx.qc); | |
2325 | ||
8b7be3aa | 2326 | /* Calling this function inhibits default XSO autocreation. */ |
9cab4bd5 HL |
2327 | /* QC ref to any default XSO is transferred to us and to caller. */ |
2328 | qc_set_default_xso_keep_ref(ctx.qc, NULL, /*touch=*/1, &xso); | |
8b7be3aa HL |
2329 | |
2330 | quic_unlock(ctx.qc); | |
2331 | ||
9cab4bd5 | 2332 | return xso != NULL ? &xso->ssl : NULL; |
8b7be3aa HL |
2333 | } |
2334 | ||
2335 | /* | |
2336 | * SSL_attach_stream | |
2337 | * ----------------- | |
2338 | */ | |
cb68ce9f | 2339 | QUIC_TAKES_LOCK |
8b7be3aa HL |
2340 | int ossl_quic_attach_stream(SSL *conn, SSL *stream) |
2341 | { | |
2342 | QCTX ctx; | |
9cab4bd5 HL |
2343 | QUIC_XSO *xso; |
2344 | int nref; | |
8b7be3aa HL |
2345 | |
2346 | if (!expect_quic_conn_only(conn, &ctx)) | |
2347 | return 0; | |
2348 | ||
2349 | if (stream == NULL || stream->type != SSL_TYPE_QUIC_XSO) | |
faa3a180 | 2350 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_NULL_PARAMETER, |
8b7be3aa HL |
2351 | "stream to attach must be a valid QUIC stream"); |
2352 | ||
9cab4bd5 HL |
2353 | xso = (QUIC_XSO *)stream; |
2354 | ||
8b7be3aa HL |
2355 | quic_lock(ctx.qc); |
2356 | ||
2357 | if (ctx.qc->default_xso != NULL) { | |
2358 | quic_unlock(ctx.qc); | |
faa3a180 | 2359 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED, |
8b7be3aa HL |
2360 | "connection already has a default stream"); |
2361 | } | |
2362 | ||
9cab4bd5 HL |
2363 | /* |
2364 | * It is a caller error for the XSO being attached as a default XSO to have | |
2365 | * more than one ref. | |
2366 | */ | |
4eecc6aa | 2367 | if (!CRYPTO_GET_REF(&xso->ssl.references, &nref)) { |
9cab4bd5 | 2368 | quic_unlock(ctx.qc); |
faa3a180 | 2369 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, |
9cab4bd5 HL |
2370 | "ref"); |
2371 | } | |
2372 | ||
2373 | if (nref != 1) { | |
2374 | quic_unlock(ctx.qc); | |
faa3a180 | 2375 | return QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_PASSED_INVALID_ARGUMENT, |
9cab4bd5 HL |
2376 | "stream being attached must have " |
2377 | "only 1 reference"); | |
2378 | } | |
2379 | ||
2380 | /* Caller's reference to the XSO is transferred to us. */ | |
8b7be3aa | 2381 | /* Calling this function inhibits default XSO autocreation. */ |
9cab4bd5 | 2382 | qc_set_default_xso(ctx.qc, xso, /*touch=*/1); |
8b7be3aa HL |
2383 | |
2384 | quic_unlock(ctx.qc); | |
2385 | return 1; | |
19cb0887 HL |
2386 | } |
2387 | ||
8a90df34 | 2388 | /* |
83df44ae HL |
2389 | * SSL_set_incoming_stream_policy |
2390 | * ------------------------------ | |
8a90df34 | 2391 | */ |
995ff282 | 2392 | QUIC_NEEDS_LOCK |
83df44ae | 2393 | static int qc_get_effective_incoming_stream_policy(QUIC_CONNECTION *qc) |
995ff282 | 2394 | { |
83df44ae HL |
2395 | switch (qc->incoming_stream_policy) { |
2396 | case SSL_INCOMING_STREAM_POLICY_AUTO: | |
995ff282 HL |
2397 | if ((qc->default_xso == NULL && !qc->default_xso_created) |
2398 | || qc->default_stream_mode == SSL_DEFAULT_STREAM_MODE_NONE) | |
83df44ae | 2399 | return SSL_INCOMING_STREAM_POLICY_ACCEPT; |
995ff282 | 2400 | else |
83df44ae | 2401 | return SSL_INCOMING_STREAM_POLICY_REJECT; |
995ff282 HL |
2402 | |
2403 | default: | |
83df44ae | 2404 | return qc->incoming_stream_policy; |
995ff282 HL |
2405 | } |
2406 | } | |
2407 | ||
2408 | QUIC_NEEDS_LOCK | |
2409 | static void qc_update_reject_policy(QUIC_CONNECTION *qc) | |
2410 | { | |
83df44ae HL |
2411 | int policy = qc_get_effective_incoming_stream_policy(qc); |
2412 | int enable_reject = (policy == SSL_INCOMING_STREAM_POLICY_REJECT); | |
995ff282 HL |
2413 | |
2414 | ossl_quic_channel_set_incoming_stream_auto_reject(qc->ch, | |
2415 | enable_reject, | |
83df44ae | 2416 | qc->incoming_stream_aec); |
995ff282 HL |
2417 | } |
2418 | ||
cb68ce9f | 2419 | QUIC_TAKES_LOCK |
83df44ae HL |
2420 | int ossl_quic_set_incoming_stream_policy(SSL *s, int policy, |
2421 | uint64_t aec) | |
8a90df34 HL |
2422 | { |
2423 | int ret = 1; | |
2424 | QCTX ctx; | |
2425 | ||
2426 | if (!expect_quic_conn_only(s, &ctx)) | |
2427 | return 0; | |
2428 | ||
2429 | quic_lock(ctx.qc); | |
2430 | ||
2431 | switch (policy) { | |
83df44ae HL |
2432 | case SSL_INCOMING_STREAM_POLICY_AUTO: |
2433 | case SSL_INCOMING_STREAM_POLICY_ACCEPT: | |
2434 | case SSL_INCOMING_STREAM_POLICY_REJECT: | |
2435 | ctx.qc->incoming_stream_policy = policy; | |
2436 | ctx.qc->incoming_stream_aec = aec; | |
8a90df34 HL |
2437 | break; |
2438 | ||
2439 | default: | |
2440 | ret = 0; | |
2441 | break; | |
2442 | } | |
2443 | ||
995ff282 | 2444 | qc_update_reject_policy(ctx.qc); |
8a90df34 HL |
2445 | quic_unlock(ctx.qc); |
2446 | return ret; | |
2447 | } | |
2448 | ||
cb68ce9f HL |
2449 | /* |
2450 | * SSL_accept_stream | |
2451 | * ----------------- | |
2452 | */ | |
cb68ce9f | 2453 | struct wait_for_incoming_stream_args { |
faa3a180 | 2454 | QCTX *ctx; |
cb68ce9f HL |
2455 | QUIC_STREAM *qs; |
2456 | }; | |
2457 | ||
2458 | QUIC_NEEDS_LOCK | |
2459 | static int wait_for_incoming_stream(void *arg) | |
2460 | { | |
2461 | struct wait_for_incoming_stream_args *args = arg; | |
faa3a180 HL |
2462 | QUIC_CONNECTION *qc = args->ctx->qc; |
2463 | QUIC_STREAM_MAP *qsm = ossl_quic_channel_get_qsm(qc->ch); | |
cb68ce9f | 2464 | |
faa3a180 | 2465 | if (!ossl_quic_channel_is_active(qc->ch)) { |
cb68ce9f | 2466 | /* If connection is torn down due to an error while blocking, stop. */ |
faa3a180 | 2467 | QUIC_RAISE_NON_NORMAL_ERROR(args->ctx, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL); |
cb68ce9f HL |
2468 | return -1; |
2469 | } | |
2470 | ||
2471 | args->qs = ossl_quic_stream_map_peek_accept_queue(qsm); | |
2472 | if (args->qs != NULL) | |
2473 | return 1; /* got a stream */ | |
2474 | ||
2475 | return 0; /* did not get a stream, keep trying */ | |
2476 | } | |
2477 | ||
2478 | QUIC_TAKES_LOCK | |
2479 | SSL *ossl_quic_accept_stream(SSL *s, uint64_t flags) | |
2480 | { | |
2481 | QCTX ctx; | |
2482 | int ret; | |
2483 | SSL *new_s = NULL; | |
2484 | QUIC_STREAM_MAP *qsm; | |
2485 | QUIC_STREAM *qs; | |
2486 | QUIC_XSO *xso; | |
90cecc40 | 2487 | OSSL_RTT_INFO rtt_info; |
cb68ce9f HL |
2488 | |
2489 | if (!expect_quic_conn_only(s, &ctx)) | |
2490 | return NULL; | |
2491 | ||
2492 | quic_lock(ctx.qc); | |
2493 | ||
83df44ae HL |
2494 | if (qc_get_effective_incoming_stream_policy(ctx.qc) |
2495 | == SSL_INCOMING_STREAM_POLICY_REJECT) | |
cb68ce9f HL |
2496 | goto out; |
2497 | ||
2498 | qsm = ossl_quic_channel_get_qsm(ctx.qc->ch); | |
2499 | ||
2500 | qs = ossl_quic_stream_map_peek_accept_queue(qsm); | |
2501 | if (qs == NULL) { | |
2502 | if (qc_blocking_mode(ctx.qc) | |
2503 | && (flags & SSL_ACCEPT_STREAM_NO_BLOCK) == 0) { | |
2504 | struct wait_for_incoming_stream_args args; | |
2505 | ||
faa3a180 | 2506 | args.ctx = &ctx; |
cb68ce9f HL |
2507 | args.qs = NULL; |
2508 | ||
2509 | ret = block_until_pred(ctx.qc, wait_for_incoming_stream, &args, 0); | |
2510 | if (ret == 0) { | |
faa3a180 | 2511 | QUIC_RAISE_NON_NORMAL_ERROR(&ctx, ERR_R_INTERNAL_ERROR, NULL); |
cb68ce9f HL |
2512 | goto out; |
2513 | } else if (ret < 0 || args.qs == NULL) { | |
2514 | goto out; | |
2515 | } | |
2516 | ||
2517 | qs = args.qs; | |
2518 | } else { | |
2519 | goto out; | |
2520 | } | |
2521 | } | |
2522 | ||
2523 | xso = create_xso_from_stream(ctx.qc, qs); | |
2524 | if (xso == NULL) | |
2525 | goto out; | |
2526 | ||
90cecc40 HL |
2527 | ossl_statm_get_rtt_info(ossl_quic_channel_get_statm(ctx.qc->ch), &rtt_info); |
2528 | ossl_quic_stream_map_remove_from_accept_queue(qsm, qs, | |
2529 | rtt_info.smoothed_rtt); | |
cb68ce9f HL |
2530 | new_s = &xso->ssl; |
2531 | ||
2532 | /* Calling this function inhibits default XSO autocreation. */ | |
995ff282 | 2533 | qc_touch_default_xso(ctx.qc); /* inhibits default XSO */ |
cb68ce9f HL |
2534 | |
2535 | out: | |
2536 | quic_unlock(ctx.qc); | |
2537 | return new_s; | |
2538 | } | |
2539 | ||
2540 | /* | |
2541 | * SSL_get_accept_stream_queue_len | |
2542 | * ------------------------------- | |
2543 | */ | |
2544 | QUIC_TAKES_LOCK | |
2545 | size_t ossl_quic_get_accept_stream_queue_len(SSL *s) | |
2546 | { | |
2547 | QCTX ctx; | |
2548 | size_t v; | |
2549 | ||
2550 | if (!expect_quic_conn_only(s, &ctx)) | |
2551 | return 0; | |
2552 | ||
2553 | quic_lock(ctx.qc); | |
2554 | ||
2555 | v = ossl_quic_stream_map_get_accept_queue_len(ossl_quic_channel_get_qsm(ctx.qc->ch)); | |
2556 | ||
2557 | quic_unlock(ctx.qc); | |
2558 | return v; | |
2559 | } | |
2560 | ||
c3a04ea2 HL |
2561 | /* |
2562 | * SSL_stream_reset | |
2563 | * ---------------- | |
2564 | */ | |
2565 | int ossl_quic_stream_reset(SSL *ssl, | |
2566 | const SSL_STREAM_RESET_ARGS *args, | |
2567 | size_t args_len) | |
2568 | { | |
2569 | QCTX ctx; | |
2570 | QUIC_STREAM_MAP *qsm; | |
2571 | QUIC_STREAM *qs; | |
2572 | uint64_t error_code; | |
2573 | ||
2574 | if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/0, &ctx)) | |
2575 | return 0; | |
2576 | ||
2577 | qsm = ossl_quic_channel_get_qsm(ctx.qc->ch); | |
2578 | qs = ctx.xso->stream; | |
2579 | error_code = (args != NULL ? args->quic_error_code : 0); | |
2580 | ||
2581 | ossl_quic_stream_map_reset_stream_send_part(qsm, qs, error_code); | |
2582 | ||
2583 | quic_unlock(ctx.qc); | |
2584 | return 1; | |
2585 | } | |
2586 | ||
2587 | /* | |
2588 | * SSL_get_stream_read_state | |
2589 | * ------------------------- | |
2590 | */ | |
2591 | static void quic_classify_stream(QUIC_CONNECTION *qc, | |
2592 | QUIC_STREAM *qs, | |
2593 | int is_write, | |
2594 | int *state, | |
2595 | uint64_t *app_error_code) | |
2596 | { | |
2597 | int local_init; | |
2598 | uint64_t final_size; | |
2599 | ||
2600 | local_init = (ossl_quic_stream_is_server_init(qs) == qc->as_server); | |
2601 | ||
2602 | if (app_error_code != NULL) | |
2603 | *app_error_code = UINT64_MAX; | |
2604 | else | |
2605 | app_error_code = &final_size; /* throw away value */ | |
2606 | ||
2607 | if (!ossl_quic_stream_is_bidi(qs) && local_init != is_write) { | |
2608 | /* | |
2609 | * Unidirectional stream and this direction of transmission doesn't | |
2610 | * exist. | |
2611 | */ | |
2612 | *state = SSL_STREAM_STATE_WRONG_DIR; | |
2613 | } else if (ossl_quic_channel_is_term_any(qc->ch)) { | |
2614 | /* Connection already closed. */ | |
2615 | *state = SSL_STREAM_STATE_CONN_CLOSED; | |
2616 | } else if (!is_write && qs->recv_fin_retired) { | |
2617 | /* Application has read a FIN. */ | |
2618 | *state = SSL_STREAM_STATE_FINISHED; | |
2619 | } else if ((!is_write && qs->stop_sending) | |
2620 | || (is_write && qs->reset_stream)) { | |
2621 | /* | |
2622 | * Stream has been reset locally. FIN takes precedence over this for the | |
2623 | * read case as the application need not care if the stream is reset | |
2624 | * after a FIN has been successfully processed. | |
2625 | */ | |
2626 | *state = SSL_STREAM_STATE_RESET_LOCAL; | |
2627 | *app_error_code = !is_write | |
2628 | ? qs->stop_sending_aec | |
2629 | : qs->reset_stream_aec; | |
2630 | } else if ((!is_write && qs->peer_reset_stream) | |
2631 | || (is_write && qs->peer_stop_sending)) { | |
2632 | /* | |
2633 | * Stream has been reset remotely. */ | |
2634 | *state = SSL_STREAM_STATE_RESET_REMOTE; | |
2635 | *app_error_code = !is_write | |
2636 | ? qs->peer_reset_stream_aec | |
2637 | : qs->peer_stop_sending_aec; | |
2638 | } else if (is_write && ossl_quic_sstream_get_final_size(qs->sstream, | |
2639 | &final_size)) { | |
2640 | /* | |
2641 | * Stream has been finished. Stream reset takes precedence over this for | |
2642 | * the write case as peer may not have received all data. | |
2643 | */ | |
2644 | *state = SSL_STREAM_STATE_FINISHED; | |
2645 | } else { | |
2646 | /* Stream still healthy. */ | |
2647 | *state = SSL_STREAM_STATE_OK; | |
2648 | } | |
2649 | } | |
2650 | ||
2651 | static int quic_get_stream_state(SSL *ssl, int is_write) | |
2652 | { | |
2653 | QCTX ctx; | |
2654 | int state; | |
2655 | ||
2656 | if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/-1, &ctx)) | |
2657 | return SSL_STREAM_STATE_NONE; | |
2658 | ||
2659 | quic_classify_stream(ctx.qc, ctx.xso->stream, is_write, &state, NULL); | |
2660 | quic_unlock(ctx.qc); | |
2661 | return state; | |
2662 | } | |
2663 | ||
2664 | int ossl_quic_get_stream_read_state(SSL *ssl) | |
2665 | { | |
2666 | return quic_get_stream_state(ssl, /*is_write=*/0); | |
2667 | } | |
2668 | ||
2669 | /* | |
2670 | * SSL_get_stream_write_state | |
2671 | * -------------------------- | |
2672 | */ | |
2673 | int ossl_quic_get_stream_write_state(SSL *ssl) | |
2674 | { | |
2675 | return quic_get_stream_state(ssl, /*is_write=*/1); | |
2676 | } | |
2677 | ||
2678 | /* | |
2679 | * SSL_get_stream_read_error_code | |
2680 | * ------------------------------ | |
2681 | */ | |
2682 | static int quic_get_stream_error_code(SSL *ssl, int is_write, | |
2683 | uint64_t *app_error_code) | |
2684 | { | |
2685 | QCTX ctx; | |
2686 | int state; | |
2687 | ||
2688 | if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/-1, &ctx)) | |
2689 | return -1; | |
2690 | ||
2691 | quic_classify_stream(ctx.qc, ctx.xso->stream, /*is_write=*/0, | |
2692 | &state, app_error_code); | |
2693 | ||
2694 | quic_unlock(ctx.qc); | |
2695 | switch (state) { | |
2696 | case SSL_STREAM_STATE_FINISHED: | |
2697 | return 0; | |
2698 | case SSL_STREAM_STATE_RESET_LOCAL: | |
2699 | case SSL_STREAM_STATE_RESET_REMOTE: | |
2700 | return 1; | |
2701 | default: | |
2702 | return -1; | |
2703 | } | |
2704 | } | |
2705 | ||
2706 | int ossl_quic_get_stream_read_error_code(SSL *ssl, uint64_t *app_error_code) | |
2707 | { | |
2708 | return quic_get_stream_error_code(ssl, /*is_write=*/0, app_error_code); | |
2709 | } | |
2710 | ||
2711 | /* | |
2712 | * SSL_get_stream_write_error_code | |
2713 | * ------------------------------- | |
2714 | */ | |
2715 | int ossl_quic_get_stream_write_error_code(SSL *ssl, uint64_t *app_error_code) | |
2716 | { | |
2717 | return quic_get_stream_error_code(ssl, /*is_write=*/1, app_error_code); | |
2718 | } | |
2719 | ||
2720 | /* | |
2721 | * SSL_get_conn_close_info | |
2722 | * ----------------------- | |
2723 | */ | |
2724 | int ossl_quic_get_conn_close_info(SSL *ssl, | |
2725 | SSL_CONN_CLOSE_INFO *info, | |
2726 | size_t info_len) | |
2727 | { | |
2728 | QCTX ctx; | |
2729 | const QUIC_TERMINATE_CAUSE *tc; | |
2730 | ||
2731 | if (!expect_quic_conn_only(ssl, &ctx)) | |
2732 | return -1; | |
2733 | ||
2734 | tc = ossl_quic_channel_get_terminate_cause(ctx.qc->ch); | |
2735 | if (tc == NULL) | |
2736 | return 0; | |
2737 | ||
2738 | info->error_code = tc->error_code; | |
2739 | info->reason = NULL; /* TODO(QUIC): Wire reason */ | |
2740 | info->reason_len = 0; | |
2741 | info->is_local = !tc->remote; | |
2742 | info->is_transport = !tc->app; | |
2743 | return 1; | |
2744 | } | |
2745 | ||
2525109f HL |
2746 | /* |
2747 | * SSL_key_update | |
2748 | * -------------- | |
2749 | */ | |
2750 | int ossl_quic_key_update(SSL *ssl, int update_type) | |
2751 | { | |
2752 | QCTX ctx; | |
2753 | ||
2754 | if (!expect_quic_conn_only(ssl, &ctx)) | |
2755 | return 0; | |
2756 | ||
2757 | switch (update_type) { | |
2758 | case SSL_KEY_UPDATE_NOT_REQUESTED: | |
2759 | /* | |
2760 | * QUIC signals peer key update implicily by triggering a local | |
2761 | * spontaneous TXKU. Silently upgrade this to SSL_KEY_UPDATE_REQUESTED. | |
2762 | */ | |
2763 | case SSL_KEY_UPDATE_REQUESTED: | |
2764 | break; | |
2765 | ||
2766 | default: | |
2767 | /* Unknown type - error. */ | |
2768 | return 0; | |
2769 | } | |
2770 | ||
2771 | quic_lock(ctx.qc); | |
2772 | ||
2773 | /* Attempt to perform a TXKU. */ | |
2774 | if (!ossl_quic_channel_trigger_txku(ctx.qc->ch)) { | |
2775 | quic_unlock(ctx.qc); | |
2776 | return 0; | |
2777 | } | |
2778 | ||
2779 | quic_unlock(ctx.qc); | |
2780 | return 1; | |
2781 | } | |
2782 | ||
2783 | /* | |
2784 | * SSL_get_key_update_type | |
2785 | * ----------------------- | |
2786 | */ | |
2787 | int ossl_quic_get_key_update_type(const SSL *s) | |
2788 | { | |
2789 | /* | |
2790 | * We always handle key updates immediately so a key update is never | |
2791 | * pending. | |
2792 | */ | |
2793 | return SSL_KEY_UPDATE_NONE; | |
2794 | } | |
2795 | ||
22d53c88 HL |
2796 | /* |
2797 | * QUIC Front-End I/O API: SSL_CTX Management | |
2798 | * ========================================== | |
2799 | */ | |
2800 | ||
2801 | long ossl_quic_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) | |
2802 | { | |
2803 | switch (cmd) { | |
2804 | default: | |
8a1a6d6d | 2805 | return ssl3_ctx_ctrl(ctx, cmd, larg, parg); |
22d53c88 HL |
2806 | } |
2807 | } | |
2808 | ||
2809 | long ossl_quic_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) | |
2810 | { | |
63dfde87 MC |
2811 | QCTX ctx; |
2812 | ||
2813 | if (!expect_quic_conn_only(s, &ctx)) | |
2814 | return 0; | |
2815 | ||
2816 | switch (cmd) { | |
2817 | case SSL_CTRL_SET_MSG_CALLBACK: | |
5cf99b40 MC |
2818 | ossl_quic_channel_set_msg_callback(ctx.qc->ch, (ossl_msg_cb)fp, |
2819 | &ctx.qc->ssl); | |
63dfde87 MC |
2820 | /* This callback also needs to be set on the internal SSL object */ |
2821 | return ssl3_callback_ctrl(ctx.qc->tls, cmd, fp);; | |
2822 | ||
2823 | default: | |
2824 | /* Probably a TLS related ctrl. Defer to our internal SSL object */ | |
2825 | return ssl3_callback_ctrl(ctx.qc->tls, cmd, fp); | |
2826 | } | |
22d53c88 HL |
2827 | } |
2828 | ||
2829 | long ossl_quic_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) | |
2830 | { | |
8a1a6d6d | 2831 | return ssl3_ctx_callback_ctrl(ctx, cmd, fp); |
22d53c88 HL |
2832 | } |
2833 | ||
2834 | int ossl_quic_renegotiate_check(SSL *ssl, int initok) | |
2835 | { | |
2836 | /* We never do renegotiation. */ | |
2837 | return 0; | |
2838 | } | |
2839 | ||
2840 | /* | |
d518854c MC |
2841 | * These functions define the TLSv1.2 (and below) ciphers that are supported by |
2842 | * the SSL_METHOD. Since QUIC only supports TLSv1.3 we don't support any. | |
22d53c88 | 2843 | */ |
22d53c88 HL |
2844 | |
2845 | int ossl_quic_num_ciphers(void) | |
2846 | { | |
d518854c | 2847 | return 0; |
22d53c88 HL |
2848 | } |
2849 | ||
2850 | const SSL_CIPHER *ossl_quic_get_cipher(unsigned int u) | |
2851 | { | |
d518854c | 2852 | return NULL; |
d5ab48a1 | 2853 | } |
16f3b542 | 2854 | |
a02571a0 TM |
2855 | int ossl_quic_set_ssl_op(SSL *ssl, uint64_t op) |
2856 | { | |
2857 | QCTX ctx; | |
6ba2edb7 | 2858 | int cleanse; |
a02571a0 TM |
2859 | |
2860 | if (!expect_quic_with_stream_lock(ssl, /*remote_init=*/-1, &ctx)) | |
2861 | return 0; | |
2862 | ||
6ba2edb7 | 2863 | if (ctx.xso->stream == NULL) |
a02571a0 TM |
2864 | goto out; |
2865 | ||
6ba2edb7 TM |
2866 | cleanse = (op & SSL_OP_CLEANSE_PLAINTEXT) != 0; |
2867 | if (ctx.xso->stream->rstream != NULL) | |
2868 | ossl_quic_rstream_set_cleanse(ctx.xso->stream->rstream, cleanse); | |
2869 | if (ctx.xso->stream->sstream != NULL) | |
2870 | ossl_quic_sstream_set_cleanse(ctx.xso->stream->sstream, cleanse); | |
a02571a0 TM |
2871 | |
2872 | out: | |
2873 | quic_unlock(ctx.qc); | |
2874 | return 1; | |
2875 | } | |
2876 | ||
16f3b542 HL |
2877 | /* |
2878 | * Internal Testing APIs | |
2879 | * ===================== | |
2880 | */ | |
2881 | ||
2882 | QUIC_CHANNEL *ossl_quic_conn_get_channel(SSL *s) | |
2883 | { | |
2884 | QCTX ctx; | |
2885 | ||
2886 | if (!expect_quic_conn_only(s, &ctx)) | |
2887 | return NULL; | |
2888 | ||
2889 | return ctx.qc->ch; | |
2890 | } |