2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
12 #include "bio_local.h"
13 #include "internal/cryptlib.h"
14 #include "internal/ktls.h"
16 #ifndef OPENSSL_NO_SOCK
18 # include <openssl/bio.h>
21 /* Watt-32 uses same names */
25 # define sock_write SockWrite
26 # define sock_read SockRead
27 # define sock_puts SockPuts
30 static int sock_write(BIO *h, const char *buf, int num);
31 static int sock_read(BIO *h, char *buf, int size);
32 static int sock_puts(BIO *h, const char *str);
33 static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2);
34 static int sock_new(BIO *h);
35 static int sock_free(BIO *data);
36 int BIO_sock_should_retry(int s);
38 static const BIO_METHOD methods_sockp = {
41 /* TODO: Convert to new style write function */
44 /* TODO: Convert to new style read function */
48 NULL, /* sock_gets, */
52 NULL, /* sock_callback_ctrl */
55 const BIO_METHOD *BIO_s_socket(void)
57 return &methods_sockp;
60 BIO *BIO_new_socket(int fd, int close_flag)
64 ret = BIO_new(BIO_s_socket());
67 BIO_set_fd(ret, fd, close_flag);
68 # ifndef OPENSSL_NO_KTLS
71 * The new socket is created successfully regardless of ktls_enable.
72 * ktls_enable doesn't change any functionality of the socket, except
73 * changing the setsockopt to enable the processing of ktls_start.
74 * Thus, it is not a problem to call it for non-TLS sockets.
82 static int sock_new(BIO *bi)
91 static int sock_free(BIO *a)
97 BIO_closesocket(a->num);
105 static int sock_read(BIO *b, char *out, int outl)
110 clear_socket_error();
111 # ifndef OPENSSL_NO_KTLS
112 if (BIO_get_ktls_recv(b))
113 ret = ktls_read_record(b->num, out, outl);
116 ret = readsocket(b->num, out, outl);
117 BIO_clear_retry_flags(b);
119 if (BIO_sock_should_retry(ret))
120 BIO_set_retry_read(b);
122 b->flags |= BIO_FLAGS_IN_EOF;
128 static int sock_write(BIO *b, const char *in, int inl)
132 clear_socket_error();
133 # ifndef OPENSSL_NO_KTLS
134 if (BIO_should_ktls_ctrl_msg_flag(b)) {
135 unsigned char record_type = (intptr_t)b->ptr;
136 ret = ktls_send_ctrl_message(b->num, record_type, in, inl);
139 BIO_clear_ktls_ctrl_msg_flag(b);
143 ret = writesocket(b->num, in, inl);
144 BIO_clear_retry_flags(b);
146 if (BIO_sock_should_retry(ret))
147 BIO_set_retry_write(b);
152 static long sock_ctrl(BIO *b, int cmd, long num, void *ptr)
156 # ifndef OPENSSL_NO_KTLS
157 ktls_crypto_info_t *crypto_info;
163 b->num = *((int *)ptr);
164 b->shutdown = (int)num;
176 case BIO_CTRL_GET_CLOSE:
179 case BIO_CTRL_SET_CLOSE:
180 b->shutdown = (int)num;
186 # ifndef OPENSSL_NO_KTLS
187 case BIO_CTRL_SET_KTLS:
188 crypto_info = (ktls_crypto_info_t *)ptr;
189 ret = ktls_start(b->num, crypto_info, num);
191 BIO_set_ktls_flag(b, num);
193 case BIO_CTRL_GET_KTLS_SEND:
194 return BIO_should_ktls_flag(b, 1) != 0;
195 case BIO_CTRL_GET_KTLS_RECV:
196 return BIO_should_ktls_flag(b, 0) != 0;
197 case BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG:
198 BIO_set_ktls_ctrl_msg_flag(b);
199 b->ptr = (void *)num;
202 case BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG:
203 BIO_clear_ktls_ctrl_msg_flag(b);
208 ret = (b->flags & BIO_FLAGS_IN_EOF) != 0;
217 static int sock_puts(BIO *bp, const char *str)
222 ret = sock_write(bp, str, n);
226 int BIO_sock_should_retry(int i)
230 if ((i == 0) || (i == -1)) {
231 err = get_last_socket_error();
233 return BIO_sock_non_fatal_error(err);
238 int BIO_sock_non_fatal_error(int err)
241 # if defined(OPENSSL_SYS_WINDOWS)
242 # if defined(WSAEWOULDBLOCK)
248 # ifdef WSAEWOULDBLOCK
249 # if WSAEWOULDBLOCK != EWOULDBLOCK
257 # if defined(ENOTCONN)
266 # if EWOULDBLOCK != EAGAIN
289 #endif /* #ifndef OPENSSL_NO_SOCK */