1 /* crypto/bio/bss_sock.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.] */
57
58 #include <openssl/bio.h>
59
60 #if !defined(OPENSSL_TRUSTY)
61
62 #include <fcntl.h>
63 #include <string.h>
64
65 #if !defined(OPENSSL_WINDOWS)
66 #include <unistd.h>
67 #else
68 OPENSSL_MSVC_PRAGMA(warning(push, 3))
69 #include <winsock2.h>
OPENSSL_MSVC_PRAGMA(warning (pop))70 OPENSSL_MSVC_PRAGMA(warning(pop))
71
72 OPENSSL_MSVC_PRAGMA(comment(lib, "Ws2_32.lib"))
73 #endif
74
75 #include "internal.h"
76
77
78 #if !defined(OPENSSL_WINDOWS)
79 static int closesocket(int sock) {
80 return close(sock);
81 }
82 #endif
83
sock_new(BIO * bio)84 static int sock_new(BIO *bio) {
85 bio->init = 0;
86 bio->num = 0;
87 bio->ptr = NULL;
88 bio->flags = 0;
89 return 1;
90 }
91
sock_free(BIO * bio)92 static int sock_free(BIO *bio) {
93 if (bio == NULL) {
94 return 0;
95 }
96
97 if (bio->shutdown) {
98 if (bio->init) {
99 closesocket(bio->num);
100 }
101 bio->init = 0;
102 bio->flags = 0;
103 }
104 return 1;
105 }
106
sock_read(BIO * b,char * out,int outl)107 static int sock_read(BIO *b, char *out, int outl) {
108 int ret = 0;
109
110 if (out == NULL) {
111 return 0;
112 }
113
114 bio_clear_socket_error();
115 #if defined(OPENSSL_WINDOWS)
116 ret = recv(b->num, out, outl, 0);
117 #else
118 ret = read(b->num, out, outl);
119 #endif
120 BIO_clear_retry_flags(b);
121 if (ret <= 0) {
122 if (bio_fd_should_retry(ret)) {
123 BIO_set_retry_read(b);
124 }
125 }
126 return ret;
127 }
128
sock_write(BIO * b,const char * in,int inl)129 static int sock_write(BIO *b, const char *in, int inl) {
130 int ret;
131
132 bio_clear_socket_error();
133 #if defined(OPENSSL_WINDOWS)
134 ret = send(b->num, in, inl, 0);
135 #else
136 ret = write(b->num, in, inl);
137 #endif
138 BIO_clear_retry_flags(b);
139 if (ret <= 0) {
140 if (bio_fd_should_retry(ret)) {
141 BIO_set_retry_write(b);
142 }
143 }
144 return ret;
145 }
146
sock_ctrl(BIO * b,int cmd,long num,void * ptr)147 static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) {
148 long ret = 1;
149 int *ip;
150
151 switch (cmd) {
152 case BIO_C_SET_FD:
153 sock_free(b);
154 b->num = *((int *)ptr);
155 b->shutdown = (int)num;
156 b->init = 1;
157 break;
158 case BIO_C_GET_FD:
159 if (b->init) {
160 ip = (int *)ptr;
161 if (ip != NULL) {
162 *ip = b->num;
163 }
164 ret = b->num;
165 } else {
166 ret = -1;
167 }
168 break;
169 case BIO_CTRL_GET_CLOSE:
170 ret = b->shutdown;
171 break;
172 case BIO_CTRL_SET_CLOSE:
173 b->shutdown = (int)num;
174 break;
175 case BIO_CTRL_FLUSH:
176 ret = 1;
177 break;
178 default:
179 ret = 0;
180 break;
181 }
182 return ret;
183 }
184
185 static const BIO_METHOD methods_sockp = {
186 BIO_TYPE_SOCKET, "socket",
187 sock_write, sock_read,
188 NULL /* puts */, NULL /* gets, */,
189 sock_ctrl, sock_new,
190 sock_free, NULL /* callback_ctrl */,
191 };
192
BIO_s_socket(void)193 const BIO_METHOD *BIO_s_socket(void) { return &methods_sockp; }
194
BIO_new_socket(int fd,int close_flag)195 BIO *BIO_new_socket(int fd, int close_flag) {
196 BIO *ret;
197
198 ret = BIO_new(BIO_s_socket());
199 if (ret == NULL) {
200 return NULL;
201 }
202 BIO_set_fd(ret, fd, close_flag);
203 return ret;
204 }
205
206 #endif // OPENSSL_TRUSTY
207