2 * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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
10 #ifndef OSSL_QUIC_LOCAL_H
11 # define OSSL_QUIC_LOCAL_H
13 # include <openssl/ssl.h>
14 # include "internal/quic_ssl.h" /* QUIC_CONNECTION */
15 # include "internal/quic_txp.h"
16 # include "internal/quic_statm.h"
17 # include "internal/quic_demux.h"
18 # include "internal/quic_record_rx.h"
19 # include "internal/quic_tls.h"
20 # include "internal/quic_fc.h"
21 # include "internal/quic_stream.h"
22 # include "internal/quic_channel.h"
23 # include "internal/quic_reactor.h"
24 # include "internal/quic_thread_assist.h"
25 # include "../ssl_local.h"
27 # ifndef OPENSSL_NO_QUIC
30 * QUIC stream SSL object (QSSO) type. This implements the API personality layer
31 * for QSSO objects, wrapping the QUIC-native QUIC_STREAM object and tracking
32 * state required by the libssl API personality.
35 /* SSL object common header. */
38 /* The connection this stream is associated with. Always non-NULL. */
39 QUIC_CONNECTION *conn;
41 /* The stream object. Always non-NULL for as long as the XSO exists. */
44 /* Is this stream in blocking mode? */
45 unsigned int blocking : 1;
48 * This state tracks SSL_write all-or-nothing (AON) write semantics
53 * t=0: aon_write_in_progress=0
54 * t=1: SSL_write(ssl, b1, l1) called;
55 * too big to enqueue into sstream at once, SSL_ERROR_WANT_WRITE;
56 * aon_write_in_progress=1; aon_buf_base=b1; aon_buf_len=l1;
57 * aon_buf_pos < l1 (depends on how much room was in sstream);
58 * t=2: SSL_write(ssl, b2, l2);
59 * b2 must equal b1 (validated unless ACCEPT_MOVING_WRITE_BUFFER)
60 * l2 must equal l1 (always validated)
61 * append into sstream from [b2 + aon_buf_pos, b2 + aon_buf_len)
62 * if done, aon_write_in_progess=0
65 /* Is an AON write in progress? */
66 unsigned int aon_write_in_progress : 1;
68 * The base buffer pointer the caller passed us for the initial AON write
69 * call. We use this for validation purposes unless
70 * ACCEPT_MOVING_WRITE_BUFFER is enabled.
72 * NOTE: We never dereference this, as the caller might pass a different
73 * (but identical) buffer if using ACCEPT_MOVING_WRITE_BUFFER. It is for
74 * validation by pointer comparison only.
76 const unsigned char *aon_buf_base;
77 /* The total length of the AON buffer being sent, in bytes. */
80 * The position in the AON buffer up to which we have successfully sent data
92 * Last 'normal' error during an app-level I/O operation, used by
93 * SSL_get_error(); used to track data-path errors like SSL_ERROR_WANT_READ
94 * and SSL_ERROR_WANT_WRITE.
101 * ssl_st is a common header for ordinary SSL objects, QUIC connection
102 * objects and QUIC stream objects, allowing objects of these different
103 * types to be disambiguated at runtime and providing some common fields.
105 * Note: This must come first in the QUIC_CONNECTION structure.
112 * The QUIC channel providing the core QUIC connection implementation. Note
113 * that this is not instantiated until we actually start trying to do the
114 * handshake. This is to allow us to gather information like whether we are
115 * going to be in client or server mode before committing to instantiating
116 * the channel, since we want to determine the channel arguments based on
119 * The channel remains available after connection termination until the SSL
120 * object is freed, thus (ch != NULL) iff (started == 1).
125 * The mutex used to synchronise access to the QUIC_CHANNEL. We own this but
126 * provide it to the channel.
131 * If we have a default stream attached, this is the internal XSO
132 * object. If there is no default stream, this is NULL.
134 QUIC_XSO *default_xso;
136 /* The network read and write BIOs. */
137 BIO *net_rbio, *net_wbio;
139 /* Initial peer L4 address. */
140 BIO_ADDR init_peer_addr;
142 # ifndef OPENSSL_NO_QUIC_THREAD_ASSIST
143 /* Manages thread for QUIC thread assisted mode. */
144 QUIC_THREAD_ASSIST thread_assist;
147 /* If non-NULL, used instead of ossl_time_now(). Used for testing. */
148 OSSL_TIME (*override_now_cb)(void *arg);
149 void *override_now_cb_arg;
151 /* Number of XSOs allocated. Includes the default XSO, if any. */
154 /* Have we started? */
155 unsigned int started : 1;
157 /* Can the read and write network BIOs support blocking? */
158 unsigned int can_poll_net_rbio : 1;
159 unsigned int can_poll_net_wbio : 1;
162 * This is 1 if we were instantiated using a QUIC server method
165 unsigned int as_server : 1;
168 * Has the application called SSL_set_accept_state? We require this to be
169 * congruent with the value of as_server.
171 unsigned int as_server_state : 1;
173 /* Are we using thread assisted mode? Never changes after init. */
174 unsigned int is_thread_assisted : 1;
176 /* Do connection-level operations (e.g. handshakes) run in blocking mode? */
177 unsigned int blocking : 1;
179 /* Do newly created streams start in blocking mode? Inherited by new XSOs. */
180 unsigned int default_blocking : 1;
182 /* Have we created a default XSO yet? */
183 unsigned int default_xso_created : 1;
186 * Pre-TERMINATING shutdown phase in which we are flushing streams.
187 * Monotonically transitions to 1.
188 * New streams cannot be created in this state.
190 unsigned int shutting_down : 1;
192 /* Default stream type. Defaults to SSL_DEFAULT_STREAM_MODE_AUTO_BIDI. */
193 uint32_t default_stream_mode;
195 /* SSL_set_mode. This is not used directly but inherited by new XSOs. */
196 uint32_t default_ssl_mode;
198 /* SSL_set_options. This is not used directly but inherited by new XSOs. */
199 uint64_t default_ssl_options;
201 /* SSL_set_incoming_stream_policy. */
202 int incoming_stream_policy;
203 uint64_t incoming_stream_aec;
206 * Last 'normal' error during an app-level I/O operation, used by
207 * SSL_get_error(); used to track data-path errors like SSL_ERROR_WANT_READ
208 * and SSL_ERROR_WANT_WRITE.
213 /* Internal calls to the QUIC CSM which come from various places. */
214 int ossl_quic_conn_on_handshake_confirmed(QUIC_CONNECTION *qc);
217 * To be called when a protocol violation occurs. The connection is torn down
218 * with the given error code, which should be a QUIC_ERR_* value. Reason string
219 * is optional and copied if provided. frame_type should be 0 if not applicable.
221 void ossl_quic_conn_raise_protocol_error(QUIC_CONNECTION *qc,
226 void ossl_quic_conn_on_remote_conn_close(QUIC_CONNECTION *qc,
227 OSSL_QUIC_FRAME_CONN_CLOSE *f);
229 int ossl_quic_trace(int write_p, int version, int content_type,
230 const void *buf, size_t msglen, SSL *ssl, void *arg);
232 # define OSSL_QUIC_ANY_VERSION 0xFFFFF
233 # define IS_QUIC_METHOD(m) \
234 ((m) == OSSL_QUIC_client_method() || \
235 (m) == OSSL_QUIC_client_thread_method())
236 # define IS_QUIC_CTX(ctx) IS_QUIC_METHOD((ctx)->method)
238 # define QUIC_CONNECTION_FROM_SSL_int(ssl, c) \
239 ((ssl) == NULL ? NULL \
240 : ((ssl)->type == SSL_TYPE_QUIC_CONNECTION \
241 ? (c QUIC_CONNECTION *)(ssl) \
244 # define QUIC_XSO_FROM_SSL_int(ssl, c) \
247 : (((ssl)->type == SSL_TYPE_QUIC_XSO \
248 ? (c QUIC_XSO *)(ssl) \
249 : ((ssl)->type == SSL_TYPE_QUIC_CONNECTION \
250 ? (c QUIC_XSO *)((QUIC_CONNECTION *)(ssl))->default_xso \
253 # define SSL_CONNECTION_FROM_QUIC_SSL_int(ssl, c) \
254 ((ssl) == NULL ? NULL \
255 : ((ssl)->type == SSL_TYPE_QUIC_CONNECTION \
256 ? (c SSL_CONNECTION *)((c QUIC_CONNECTION *)(ssl))->tls \
259 # define IS_QUIC(ssl) ((ssl) != NULL \
260 && ((ssl)->type == SSL_TYPE_QUIC_CONNECTION \
261 || (ssl)->type == SSL_TYPE_QUIC_XSO))
263 # define QUIC_CONNECTION_FROM_SSL_int(ssl, c) NULL
264 # define QUIC_XSO_FROM_SSL_int(ssl, c) NULL
265 # define SSL_CONNECTION_FROM_QUIC_SSL_int(ssl, c) NULL
266 # define IS_QUIC(ssl) 0
267 # define IS_QUIC_CTX(ctx) 0
268 # define IS_QUIC_METHOD(m) 0
271 # define QUIC_CONNECTION_FROM_SSL(ssl) \
272 QUIC_CONNECTION_FROM_SSL_int(ssl, SSL_CONNECTION_NO_CONST)
273 # define QUIC_CONNECTION_FROM_CONST_SSL(ssl) \
274 QUIC_CONNECTION_FROM_SSL_int(ssl, const)
275 # define QUIC_XSO_FROM_SSL(ssl) \
276 QUIC_XSO_FROM_SSL_int(ssl, SSL_CONNECTION_NO_CONST)
277 # define QUIC_XSO_FROM_CONST_SSL(ssl) \
278 QUIC_XSO_FROM_SSL_int(ssl, const)
279 # define SSL_CONNECTION_FROM_QUIC_SSL(ssl) \
280 SSL_CONNECTION_FROM_QUIC_SSL_int(ssl, SSL_CONNECTION_NO_CONST)
281 # define SSL_CONNECTION_FROM_CONST_QUIC_SSL(ssl) \
282 SSL_CONNECTION_FROM_CONST_QUIC_SSL_int(ssl, const)
284 # define IMPLEMENT_quic_meth_func(version, func_name, q_accept, \
285 q_connect, enc_data) \
286 const SSL_METHOD *func_name(void) \
288 static const SSL_METHOD func_name##_data= { \
303 NULL /* shutdown */, \
304 NULL /* renegotiate */, \
305 ossl_quic_renegotiate_check, \
306 NULL /* read_bytes */, \
307 NULL /* write_bytes */, \
308 NULL /* dispatch_alert */, \
310 ossl_quic_ctx_ctrl, \
311 NULL /* get_cipher_by_char */, \
312 NULL /* put_cipher_by_char */, \
314 ossl_quic_num_ciphers, \
315 ossl_quic_get_cipher, \
316 tls1_default_timeout, \
318 ssl_undefined_void_function, \
319 ossl_quic_callback_ctrl, \
320 ossl_quic_ctx_callback_ctrl, \
322 return &func_name##_data; \