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d02b48c6 | 1 | /* crypto/bio/bss_sock.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
0f113f3e | 8 | * |
d02b48c6 RE |
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). | |
0f113f3e | 15 | * |
d02b48c6 RE |
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. | |
0f113f3e | 22 | * |
d02b48c6 RE |
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 :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
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. | |
0f113f3e | 52 | * |
d02b48c6 RE |
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 | ||
d02b48c6 RE |
59 | #include <stdio.h> |
60 | #include <errno.h> | |
61 | #define USE_SOCKETS | |
62 | #include "cryptlib.h" | |
c836f8ef DSH |
63 | |
64 | #ifndef OPENSSL_NO_SOCK | |
65 | ||
0f113f3e | 66 | # include <openssl/bio.h> |
d02b48c6 | 67 | |
0f113f3e MC |
68 | # ifdef WATT32 |
69 | # define sock_write SockWrite /* Watt-32 uses same names */ | |
70 | # define sock_read SockRead | |
71 | # define sock_puts SockPuts | |
72 | # endif | |
f642ebc1 | 73 | |
0e1c0612 UM |
74 | static int sock_write(BIO *h, const char *buf, int num); |
75 | static int sock_read(BIO *h, char *buf, int size); | |
76 | static int sock_puts(BIO *h, const char *str); | |
77 | static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2); | |
d02b48c6 RE |
78 | static int sock_new(BIO *h); |
79 | static int sock_free(BIO *data); | |
80 | int BIO_sock_should_retry(int s); | |
d02b48c6 | 81 | |
0f113f3e MC |
82 | static BIO_METHOD methods_sockp = { |
83 | BIO_TYPE_SOCKET, | |
84 | "socket", | |
85 | sock_write, | |
86 | sock_read, | |
87 | sock_puts, | |
88 | NULL, /* sock_gets, */ | |
89 | sock_ctrl, | |
90 | sock_new, | |
91 | sock_free, | |
92 | NULL, | |
93 | }; | |
d02b48c6 | 94 | |
6b691a5c | 95 | BIO_METHOD *BIO_s_socket(void) |
0f113f3e MC |
96 | { |
97 | return (&methods_sockp); | |
98 | } | |
d02b48c6 | 99 | |
6b691a5c | 100 | BIO *BIO_new_socket(int fd, int close_flag) |
0f113f3e MC |
101 | { |
102 | BIO *ret; | |
d02b48c6 | 103 | |
0f113f3e MC |
104 | ret = BIO_new(BIO_s_socket()); |
105 | if (ret == NULL) | |
106 | return (NULL); | |
107 | BIO_set_fd(ret, fd, close_flag); | |
108 | return (ret); | |
109 | } | |
d02b48c6 | 110 | |
6b691a5c | 111 | static int sock_new(BIO *bi) |
0f113f3e MC |
112 | { |
113 | bi->init = 0; | |
114 | bi->num = 0; | |
115 | bi->ptr = NULL; | |
116 | bi->flags = 0; | |
117 | return (1); | |
118 | } | |
d02b48c6 | 119 | |
6b691a5c | 120 | static int sock_free(BIO *a) |
0f113f3e MC |
121 | { |
122 | if (a == NULL) | |
123 | return (0); | |
124 | if (a->shutdown) { | |
125 | if (a->init) { | |
126 | SHUTDOWN2(a->num); | |
127 | } | |
128 | a->init = 0; | |
129 | a->flags = 0; | |
130 | } | |
131 | return (1); | |
132 | } | |
133 | ||
6b691a5c | 134 | static int sock_read(BIO *b, char *out, int outl) |
0f113f3e MC |
135 | { |
136 | int ret = 0; | |
137 | ||
138 | if (out != NULL) { | |
139 | clear_socket_error(); | |
140 | ret = readsocket(b->num, out, outl); | |
141 | BIO_clear_retry_flags(b); | |
142 | if (ret <= 0) { | |
143 | if (BIO_sock_should_retry(ret)) | |
144 | BIO_set_retry_read(b); | |
145 | } | |
146 | } | |
147 | return (ret); | |
148 | } | |
d02b48c6 | 149 | |
0e1c0612 | 150 | static int sock_write(BIO *b, const char *in, int inl) |
0f113f3e MC |
151 | { |
152 | int ret; | |
153 | ||
154 | clear_socket_error(); | |
155 | ret = writesocket(b->num, in, inl); | |
156 | BIO_clear_retry_flags(b); | |
157 | if (ret <= 0) { | |
158 | if (BIO_sock_should_retry(ret)) | |
159 | BIO_set_retry_write(b); | |
160 | } | |
161 | return (ret); | |
162 | } | |
d02b48c6 | 163 | |
0e1c0612 | 164 | static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) |
0f113f3e MC |
165 | { |
166 | long ret = 1; | |
167 | int *ip; | |
168 | ||
169 | switch (cmd) { | |
170 | case BIO_C_SET_FD: | |
171 | sock_free(b); | |
172 | b->num = *((int *)ptr); | |
173 | b->shutdown = (int)num; | |
174 | b->init = 1; | |
175 | break; | |
176 | case BIO_C_GET_FD: | |
177 | if (b->init) { | |
178 | ip = (int *)ptr; | |
179 | if (ip != NULL) | |
180 | *ip = b->num; | |
181 | ret = b->num; | |
182 | } else | |
183 | ret = -1; | |
184 | break; | |
185 | case BIO_CTRL_GET_CLOSE: | |
186 | ret = b->shutdown; | |
187 | break; | |
188 | case BIO_CTRL_SET_CLOSE: | |
189 | b->shutdown = (int)num; | |
190 | break; | |
191 | case BIO_CTRL_DUP: | |
192 | case BIO_CTRL_FLUSH: | |
193 | ret = 1; | |
194 | break; | |
195 | default: | |
196 | ret = 0; | |
197 | break; | |
198 | } | |
199 | return (ret); | |
200 | } | |
d02b48c6 | 201 | |
0e1c0612 | 202 | static int sock_puts(BIO *bp, const char *str) |
0f113f3e MC |
203 | { |
204 | int n, ret; | |
d02b48c6 | 205 | |
0f113f3e MC |
206 | n = strlen(str); |
207 | ret = sock_write(bp, str, n); | |
208 | return (ret); | |
209 | } | |
d02b48c6 | 210 | |
6b691a5c | 211 | int BIO_sock_should_retry(int i) |
0f113f3e MC |
212 | { |
213 | int err; | |
58964a49 | 214 | |
0f113f3e MC |
215 | if ((i == 0) || (i == -1)) { |
216 | err = get_last_socket_error(); | |
d02b48c6 | 217 | |
0f113f3e MC |
218 | # if defined(OPENSSL_SYS_WINDOWS) && 0/* more microsoft stupidity? perhaps |
219 | * not? Ben 4/1/99 */ | |
220 | if ((i == -1) && (err == 0)) | |
221 | return (1); | |
222 | # endif | |
58964a49 | 223 | |
0f113f3e MC |
224 | return (BIO_sock_non_fatal_error(err)); |
225 | } | |
226 | return (0); | |
227 | } | |
d02b48c6 | 228 | |
6b691a5c | 229 | int BIO_sock_non_fatal_error(int err) |
0f113f3e MC |
230 | { |
231 | switch (err) { | |
232 | # if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_NETWARE) | |
233 | # if defined(WSAEWOULDBLOCK) | |
234 | case WSAEWOULDBLOCK: | |
235 | # endif | |
d02b48c6 RE |
236 | # endif |
237 | ||
0f113f3e MC |
238 | # ifdef EWOULDBLOCK |
239 | # ifdef WSAEWOULDBLOCK | |
240 | # if WSAEWOULDBLOCK != EWOULDBLOCK | |
241 | case EWOULDBLOCK: | |
242 | # endif | |
243 | # else | |
244 | case EWOULDBLOCK: | |
dfeab068 | 245 | # endif |
d02b48c6 | 246 | # endif |
d02b48c6 | 247 | |
0f113f3e MC |
248 | # if defined(ENOTCONN) |
249 | case ENOTCONN: | |
250 | # endif | |
251 | ||
252 | # ifdef EINTR | |
253 | case EINTR: | |
254 | # endif | |
255 | ||
256 | # ifdef EAGAIN | |
257 | # if EWOULDBLOCK != EAGAIN | |
258 | case EAGAIN: | |
d02b48c6 | 259 | # endif |
d02b48c6 | 260 | # endif |
d02b48c6 | 261 | |
0f113f3e MC |
262 | # ifdef EPROTO |
263 | case EPROTO: | |
264 | # endif | |
58964a49 | 265 | |
0f113f3e MC |
266 | # ifdef EINPROGRESS |
267 | case EINPROGRESS: | |
268 | # endif | |
d02b48c6 | 269 | |
0f113f3e MC |
270 | # ifdef EALREADY |
271 | case EALREADY: | |
d02b48c6 | 272 | # endif |
0f113f3e MC |
273 | return (1); |
274 | /* break; */ | |
275 | default: | |
276 | break; | |
277 | } | |
278 | return (0); | |
279 | } | |
280 | ||
281 | #endif /* #ifndef OPENSSL_NO_SOCK */ |