1 /*
2 * Copyright 2024-2025 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 "quic_obj_local.h"
11 #include "quic_local.h"
12 #include "internal/ssl_unwrap.h"
13
14 static int obj_update_cache(QUIC_OBJ *obj);
15
ossl_quic_obj_init(QUIC_OBJ * obj,SSL_CTX * ctx,int type,SSL * parent_obj,QUIC_ENGINE * engine,QUIC_PORT * port)16 int ossl_quic_obj_init(QUIC_OBJ *obj,
17 SSL_CTX *ctx,
18 int type,
19 SSL *parent_obj,
20 QUIC_ENGINE *engine,
21 QUIC_PORT *port)
22 {
23 int is_event_leader = (engine != NULL);
24 int is_port_leader = (port != NULL);
25
26 if (!ossl_assert(obj != NULL && !obj->init_done && SSL_TYPE_IS_QUIC(type)
27 && (parent_obj == NULL || IS_QUIC(parent_obj))))
28 return 0;
29
30 /* Event leader is always the root object. */
31 if (!ossl_assert(!is_event_leader || parent_obj == NULL))
32 return 0;
33
34 if (!ossl_ssl_init(&obj->ssl, ctx, ctx->method, type))
35 goto err;
36
37 obj->domain_flags = ctx->domain_flags;
38 obj->parent_obj = (QUIC_OBJ *)parent_obj;
39 obj->is_event_leader = is_event_leader;
40 obj->is_port_leader = is_port_leader;
41 obj->engine = engine;
42 obj->port = port;
43 obj->req_blocking_mode = QUIC_BLOCKING_MODE_INHERIT;
44 if (!obj_update_cache(obj))
45 goto err;
46
47 obj->init_done = 1;
48 return 1;
49
50 err:
51 obj->is_event_leader = 0;
52 obj->is_port_leader = 0;
53 return 0;
54 }
55
obj_update_cache(QUIC_OBJ * obj)56 static int obj_update_cache(QUIC_OBJ *obj)
57 {
58 QUIC_OBJ *p;
59
60 for (p = obj; p != NULL && !p->is_event_leader;
61 p = p->parent_obj)
62 if (!ossl_assert(p == obj || p->init_done))
63 return 0;
64
65 if (!ossl_assert(p != NULL))
66 return 0;
67
68 /*
69 * Offset of ->ssl is guaranteed to be 0 but the NULL check makes ubsan
70 * happy.
71 */
72 obj->cached_event_leader = p;
73 obj->engine = p->engine;
74
75 for (p = obj; p != NULL && !p->is_port_leader;
76 p = p->parent_obj);
77
78 obj->cached_port_leader = p;
79 obj->port = (p != NULL) ? p->port : NULL;
80 return 1;
81 }
82
ossl_quic_obj_get0_handshake_layer(QUIC_OBJ * obj)83 SSL_CONNECTION *ossl_quic_obj_get0_handshake_layer(QUIC_OBJ *obj)
84 {
85 assert(obj != NULL && obj->init_done);
86
87 if (obj->ssl.type != SSL_TYPE_QUIC_CONNECTION)
88 return NULL;
89
90 return SSL_CONNECTION_FROM_SSL_ONLY(((QUIC_CONNECTION *)obj)->tls);
91 }
92
93 /* (Returns a cached result.) */
ossl_quic_obj_can_support_blocking(const QUIC_OBJ * obj)94 int ossl_quic_obj_can_support_blocking(const QUIC_OBJ *obj)
95 {
96 QUIC_REACTOR *rtor;
97
98 assert(obj != NULL);
99 rtor = ossl_quic_obj_get0_reactor(obj);
100
101 if ((obj->domain_flags
102 & (SSL_DOMAIN_FLAG_LEGACY_BLOCKING | SSL_DOMAIN_FLAG_BLOCKING)) == 0)
103 return 0;
104
105 return ossl_quic_reactor_can_poll_r(rtor)
106 || ossl_quic_reactor_can_poll_w(rtor);
107 }
108
ossl_quic_obj_desires_blocking(const QUIC_OBJ * obj)109 int ossl_quic_obj_desires_blocking(const QUIC_OBJ *obj)
110 {
111 unsigned int req_blocking_mode;
112
113 assert(obj != NULL);
114 for (; (req_blocking_mode = obj->req_blocking_mode) == QUIC_BLOCKING_MODE_INHERIT
115 && obj->parent_obj != NULL; obj = obj->parent_obj);
116
117 return req_blocking_mode != QUIC_BLOCKING_MODE_NONBLOCKING;
118 }
119
ossl_quic_obj_blocking(const QUIC_OBJ * obj)120 int ossl_quic_obj_blocking(const QUIC_OBJ *obj)
121 {
122 assert(obj != NULL);
123
124 if (!ossl_quic_obj_desires_blocking(obj))
125 return 0;
126
127 ossl_quic_engine_update_poll_descriptors(ossl_quic_obj_get0_engine(obj),
128 /*force=*/0);
129 return ossl_quic_obj_can_support_blocking(obj);
130 }
131
ossl_quic_obj_set_blocking_mode(QUIC_OBJ * obj,unsigned int mode)132 void ossl_quic_obj_set_blocking_mode(QUIC_OBJ *obj, unsigned int mode)
133 {
134 assert(obj != NULL);
135
136 obj->req_blocking_mode = mode;
137 }
138