1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/*
* Copyright (c) 2020 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <openssl/bio.h>
#include <openssl/err.h>
#include <vnet/session/session.h>
#include <vnet/session/application_interface.h>
static inline session_t *
bio_session (BIO * bio)
{
return session_get_from_handle (pointer_to_uword (BIO_get_data (bio)));
}
static int
bio_tls_alloc (BIO * bio)
{
BIO_set_init (bio, 0);
BIO_set_data (bio, 0);
BIO_set_flags (bio, 0);
BIO_set_shutdown (bio, 0);
return 1;
}
static int
bio_tls_free (BIO * bio)
{
if (!bio)
return 0;
if (BIO_get_shutdown (bio))
{
if (BIO_get_init (bio))
session_close (bio_session (bio));
BIO_set_init (bio, 0);
BIO_set_flags (bio, 0);
}
return 1;
}
static int
bio_tls_read (BIO * b, char *out, int outl)
{
session_t *s;
int rv;
if (PREDICT_FALSE (!out))
return 0;
s = bio_session (b);
if (!s)
{
clib_warning ("no session");
errno = EBADFD;
return -1;
}
rv = app_recv_stream_raw (s->rx_fifo, (u8 *) out, outl,
0 /* clear evt */ , 0 /* peek */ );
if (rv < 0)
{
BIO_set_retry_read (b);
errno = EAGAIN;
return -1;
}
if (svm_fifo_needs_deq_ntf (s->rx_fifo, rv))
{
svm_fifo_clear_deq_ntf (s->rx_fifo);
session_send_io_evt_to_thread (s->rx_fifo, SESSION_IO_EVT_RX);
}
if (svm_fifo_is_empty_cons (s->rx_fifo))
svm_fifo_unset_event (s->rx_fifo);
BIO_clear_retry_flags (b);
return rv;
}
static int
bio_tls_write (BIO * b, const char *in, int inl)
{
svm_msg_q_t *mq;
session_t *s;
int rv;
if (PREDICT_FALSE (!in))
return 0;
s = bio_session (b);
if (!s)
{
clib_warning ("no session");
errno = EBADFD;
return -1;
}
mq = session_main_get_vpp_event_queue (s->thread_index);
rv = app_send_stream_raw (s->tx_fifo, mq, (u8 *) in, inl,
SESSION_IO_EVT_TX, 1 /* do_evt */ ,
0 /* noblock */ );
if (rv < 0)
{
BIO_set_retry_write (b);
errno = EAGAIN;
return -1;
}
BIO_clear_retry_flags (b);
return rv;
}
long
bio_tls_ctrl (BIO * b, int cmd, long larg, void *ptr)
{
long ret = 1;
switch (cmd)
{
case BIO_C_SET_FD:
ASSERT (0);
break;
case BIO_C_GET_FD:
ASSERT (0);
break;
case BIO_CTRL_GET_CLOSE:
ret = BIO_get_shutdown (b);
break;
case BIO_CTRL_SET_CLOSE:
BIO_set_shutdown (b, (int) larg);
break;
case BIO_CTRL_DUP:
case BIO_CTRL_FLUSH:
ret = 1;
break;
case BIO_CTRL_PENDING:
ret = 0;
break;
default:
ret = 0;
break;
}
return ret;
}
BIO *
BIO_new_tls (session_handle_t sh)
{
static BIO_METHOD *tls_bio_method;
BIO *b;
if (!tls_bio_method)
{
tls_bio_method = BIO_meth_new (BIO_TYPE_SOCKET, "tls_bio");
BIO_meth_set_write (tls_bio_method, bio_tls_write);
BIO_meth_set_read (tls_bio_method, bio_tls_read);
BIO_meth_set_create (tls_bio_method, bio_tls_alloc);
BIO_meth_set_destroy (tls_bio_method, bio_tls_free);
BIO_meth_set_ctrl (tls_bio_method, bio_tls_ctrl);
}
b = BIO_new (tls_bio_method);
/* Initialize the BIO */
BIO_set_data (b, uword_to_pointer (sh, void *));
BIO_set_init (b, 1);
return b;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
