1 /* crypto/bio/bss_sock.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
65 #include <openssl/bio.h>
67 static int sock_write(BIO *h, const char *buf, int num);
68 static int sock_read(BIO *h, char *buf, int size);
69 static int sock_puts(BIO *h, const char *str);
70 static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2);
71 static int sock_new(BIO *h);
72 static int sock_free(BIO *data);
73 int BIO_sock_should_retry(int s);
75 static BIO_METHOD methods_sockp=
82 NULL, /* sock_gets, */
89 BIO_METHOD *BIO_s_socket(void)
91 return(&methods_sockp);
94 BIO *BIO_new_socket(int fd, int close_flag)
98 ret=BIO_new(BIO_s_socket());
99 if (ret == NULL) return(NULL);
100 BIO_set_fd(ret,fd,close_flag);
104 static int sock_new(BIO *bi)
113 static int sock_free(BIO *a)
115 if (a == NULL) return(0);
128 static int sock_read(BIO *b, char *out, int outl)
134 clear_socket_error();
135 ret=readsocket(b->num,out,outl);
136 BIO_clear_retry_flags(b);
139 if (BIO_sock_should_retry(ret))
140 BIO_set_retry_read(b);
146 static int sock_write(BIO *b, const char *in, int inl)
150 clear_socket_error();
151 ret=writesocket(b->num,in,inl);
152 BIO_clear_retry_flags(b);
155 if (BIO_sock_should_retry(ret))
156 BIO_set_retry_write(b);
161 static long sock_ctrl(BIO *b, int cmd, long num, void *ptr)
170 case BIO_C_FILE_SEEK:
173 case BIO_C_FILE_TELL:
179 b->num= *((int *)ptr);
180 b->shutdown=(int)num;
187 if (ip != NULL) *ip=b->num;
193 case BIO_CTRL_GET_CLOSE:
196 case BIO_CTRL_SET_CLOSE:
197 b->shutdown=(int)num;
199 case BIO_CTRL_PENDING:
200 case BIO_CTRL_WPENDING:
214 static int sock_puts(BIO *bp, const char *str)
219 ret=sock_write(bp,str,n);
223 int BIO_sock_should_retry(int i)
227 if ((i == 0) || (i == -1))
229 err=get_last_socket_error();
231 #if defined(WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
232 if ((i == -1) && (err == 0))
236 return(BIO_sock_non_fatal_error(err));
241 int BIO_sock_non_fatal_error(int err)
246 # if defined(WSAEWOULDBLOCK)
250 # if 0 /* This appears to always be an error */
251 # if defined(WSAENOTCONN)
258 # ifdef WSAEWOULDBLOCK
259 # if WSAEWOULDBLOCK != EWOULDBLOCK
267 #if defined(ENOTCONN)
276 #if EWOULDBLOCK != EAGAIN