1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
61 #include "internal/cryptlib.h"
63 #ifndef OPENSSL_NO_SOCK
65 # include <openssl/bio.h>
68 # define sock_write SockWrite /* Watt-32 uses same names */
69 # define sock_read SockRead
70 # define sock_puts SockPuts
73 static int sock_write(BIO *h, const char *buf, int num);
74 static int sock_read(BIO *h, char *buf, int size);
75 static int sock_puts(BIO *h, const char *str);
76 static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2);
77 static int sock_new(BIO *h);
78 static int sock_free(BIO *data);
79 int BIO_sock_should_retry(int s);
81 static const BIO_METHOD methods_sockp = {
87 NULL, /* sock_gets, */
94 const BIO_METHOD *BIO_s_socket(void)
96 return (&methods_sockp);
99 BIO *BIO_new_socket(int fd, int close_flag)
103 ret = BIO_new(BIO_s_socket());
106 BIO_set_fd(ret, fd, close_flag);
110 static int sock_new(BIO *bi)
119 static int sock_free(BIO *a)
125 BIO_closesocket(a->num);
133 static int sock_read(BIO *b, char *out, int outl)
138 clear_socket_error();
139 ret = readsocket(b->num, out, outl);
140 BIO_clear_retry_flags(b);
142 if (BIO_sock_should_retry(ret))
143 BIO_set_retry_read(b);
149 static int sock_write(BIO *b, const char *in, int inl)
153 clear_socket_error();
154 ret = writesocket(b->num, in, inl);
155 BIO_clear_retry_flags(b);
157 if (BIO_sock_should_retry(ret))
158 BIO_set_retry_write(b);
163 static long sock_ctrl(BIO *b, int cmd, long num, void *ptr)
171 b->num = *((int *)ptr);
172 b->shutdown = (int)num;
184 case BIO_CTRL_GET_CLOSE:
187 case BIO_CTRL_SET_CLOSE:
188 b->shutdown = (int)num;
201 static int sock_puts(BIO *bp, const char *str)
206 ret = sock_write(bp, str, n);
210 int BIO_sock_should_retry(int i)
214 if ((i == 0) || (i == -1)) {
215 err = get_last_socket_error();
217 return (BIO_sock_non_fatal_error(err));
222 int BIO_sock_non_fatal_error(int err)
225 # if defined(OPENSSL_SYS_WINDOWS)
226 # if defined(WSAEWOULDBLOCK)
232 # ifdef WSAEWOULDBLOCK
233 # if WSAEWOULDBLOCK != EWOULDBLOCK
241 # if defined(ENOTCONN)
250 # if EWOULDBLOCK != EAGAIN
274 #endif /* #ifndef OPENSSL_NO_SOCK */