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      1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com)
      2  * All rights reserved.
      3  *
      4  * This package is an SSL implementation written
      5  * by Eric Young (eay (at) cryptsoft.com).
      6  * The implementation was written so as to conform with Netscapes SSL.
      7  *
      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 (at) cryptsoft.com).
     14  *
     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.
     21  *
     22  * Redistribution and use in source and binary forms, with or without
     23  * modification, are permitted provided that the following conditions
     24  * are met:
     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 (at) 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 (at) cryptsoft.com)"
     39  *
     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
     50  * SUCH DAMAGE.
     51  *
     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.] */
     56 
     57 #ifndef OPENSSL_HEADER_BIO_INTERNAL_H
     58 #define OPENSSL_HEADER_BIO_INTERNAL_H
     59 
     60 #include <openssl/base.h>
     61 
     62 #if !defined(OPENSSL_WINDOWS)
     63 #if defined(OPENSSL_PNACL)
     64 /* newlib uses u_short in socket.h without defining it. */
     65 typedef unsigned short u_short;
     66 #endif
     67 #include <sys/types.h>
     68 #include <sys/socket.h>
     69 #else
     70 #include <WinSock2.h>
     71 #include <WS2tcpip.h>
     72 #endif
     73 
     74 #if defined(__cplusplus)
     75 extern "C" {
     76 #endif
     77 
     78 
     79 /* BIO_ip_and_port_to_socket_and_addr creates a socket and fills in |*out_addr|
     80  * and |*out_addr_length| with the correct values for connecting to |hostname|
     81  * on |port_str|. It returns one on success or zero on error. */
     82 int bio_ip_and_port_to_socket_and_addr(int *out_sock,
     83                                        struct sockaddr_storage *out_addr,
     84                                        socklen_t *out_addr_length,
     85                                        const char *hostname,
     86                                        const char *port_str);
     87 
     88 /* BIO_socket_nbio sets whether |sock| is non-blocking. It returns one on
     89  * success and zero otherwise. */
     90 int bio_socket_nbio(int sock, int on);
     91 
     92 /* BIO_clear_socket_error clears the last system socket error.
     93  *
     94  * TODO(fork): remove all callers of this. */
     95 void bio_clear_socket_error(void);
     96 
     97 /* BIO_sock_error returns the last socket error on |sock|. */
     98 int bio_sock_error(int sock);
     99 
    100 /* BIO_fd_should_retry returns non-zero if |return_value| indicates an error
    101  * and |errno| indicates that it's non-fatal. */
    102 int bio_fd_should_retry(int return_value);
    103 
    104 
    105 #if defined(__cplusplus)
    106 }  /* extern C */
    107 #endif
    108 
    109 #endif  /* OPENSSL_HEADER_BIO_INTERNAL_H */
    110