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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
2 | * All rights reserved. |
3 | * | |
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. | |
0f113f3e | 7 | * |
d02b48c6 RE |
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). | |
0f113f3e | 14 | * |
d02b48c6 RE |
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. | |
0f113f3e | 21 | * |
d02b48c6 RE |
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@cryptsoft.com)" | |
34 | * The word 'cryptographic' can be left out if the rouines from the library | |
35 | * being used are not cryptographic related :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
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. | |
0f113f3e | 51 | * |
d02b48c6 RE |
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 | ||
d02b48c6 RE |
58 | #include <stdio.h> |
59 | #include <errno.h> | |
60 | #define USE_SOCKETS | |
b39fc560 | 61 | #include "internal/cryptlib.h" |
c836f8ef DSH |
62 | |
63 | #ifndef OPENSSL_NO_SOCK | |
64 | ||
0f113f3e | 65 | # include <openssl/bio.h> |
d02b48c6 | 66 | |
0f113f3e MC |
67 | # ifdef WATT32 |
68 | # define sock_write SockWrite /* Watt-32 uses same names */ | |
69 | # define sock_read SockRead | |
70 | # define sock_puts SockPuts | |
71 | # endif | |
f642ebc1 | 72 | |
0e1c0612 UM |
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); | |
d02b48c6 RE |
77 | static int sock_new(BIO *h); |
78 | static int sock_free(BIO *data); | |
79 | int BIO_sock_should_retry(int s); | |
d02b48c6 | 80 | |
04f6b0fd | 81 | static const BIO_METHOD methods_sockp = { |
0f113f3e MC |
82 | BIO_TYPE_SOCKET, |
83 | "socket", | |
84 | sock_write, | |
85 | sock_read, | |
86 | sock_puts, | |
87 | NULL, /* sock_gets, */ | |
88 | sock_ctrl, | |
89 | sock_new, | |
90 | sock_free, | |
91 | NULL, | |
92 | }; | |
d02b48c6 | 93 | |
04f6b0fd | 94 | const BIO_METHOD *BIO_s_socket(void) |
0f113f3e MC |
95 | { |
96 | return (&methods_sockp); | |
97 | } | |
d02b48c6 | 98 | |
6b691a5c | 99 | BIO *BIO_new_socket(int fd, int close_flag) |
0f113f3e MC |
100 | { |
101 | BIO *ret; | |
d02b48c6 | 102 | |
0f113f3e MC |
103 | ret = BIO_new(BIO_s_socket()); |
104 | if (ret == NULL) | |
105 | return (NULL); | |
106 | BIO_set_fd(ret, fd, close_flag); | |
107 | return (ret); | |
108 | } | |
d02b48c6 | 109 | |
6b691a5c | 110 | static int sock_new(BIO *bi) |
0f113f3e MC |
111 | { |
112 | bi->init = 0; | |
113 | bi->num = 0; | |
114 | bi->ptr = NULL; | |
115 | bi->flags = 0; | |
116 | return (1); | |
117 | } | |
d02b48c6 | 118 | |
6b691a5c | 119 | static int sock_free(BIO *a) |
0f113f3e MC |
120 | { |
121 | if (a == NULL) | |
122 | return (0); | |
123 | if (a->shutdown) { | |
124 | if (a->init) { | |
8731a4fc | 125 | BIO_closesocket(a->num); |
0f113f3e MC |
126 | } |
127 | a->init = 0; | |
128 | a->flags = 0; | |
129 | } | |
130 | return (1); | |
131 | } | |
132 | ||
6b691a5c | 133 | static int sock_read(BIO *b, char *out, int outl) |
0f113f3e MC |
134 | { |
135 | int ret = 0; | |
136 | ||
137 | if (out != NULL) { | |
138 | clear_socket_error(); | |
139 | ret = readsocket(b->num, out, outl); | |
140 | BIO_clear_retry_flags(b); | |
141 | if (ret <= 0) { | |
142 | if (BIO_sock_should_retry(ret)) | |
143 | BIO_set_retry_read(b); | |
144 | } | |
145 | } | |
146 | return (ret); | |
147 | } | |
d02b48c6 | 148 | |
0e1c0612 | 149 | static int sock_write(BIO *b, const char *in, int inl) |
0f113f3e MC |
150 | { |
151 | int ret; | |
152 | ||
153 | clear_socket_error(); | |
154 | ret = writesocket(b->num, in, inl); | |
155 | BIO_clear_retry_flags(b); | |
156 | if (ret <= 0) { | |
157 | if (BIO_sock_should_retry(ret)) | |
158 | BIO_set_retry_write(b); | |
159 | } | |
160 | return (ret); | |
161 | } | |
d02b48c6 | 162 | |
0e1c0612 | 163 | static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) |
0f113f3e MC |
164 | { |
165 | long ret = 1; | |
166 | int *ip; | |
167 | ||
168 | switch (cmd) { | |
169 | case BIO_C_SET_FD: | |
170 | sock_free(b); | |
171 | b->num = *((int *)ptr); | |
172 | b->shutdown = (int)num; | |
173 | b->init = 1; | |
174 | break; | |
175 | case BIO_C_GET_FD: | |
176 | if (b->init) { | |
177 | ip = (int *)ptr; | |
178 | if (ip != NULL) | |
179 | *ip = b->num; | |
180 | ret = b->num; | |
181 | } else | |
182 | ret = -1; | |
183 | break; | |
184 | case BIO_CTRL_GET_CLOSE: | |
185 | ret = b->shutdown; | |
186 | break; | |
187 | case BIO_CTRL_SET_CLOSE: | |
188 | b->shutdown = (int)num; | |
189 | break; | |
190 | case BIO_CTRL_DUP: | |
191 | case BIO_CTRL_FLUSH: | |
192 | ret = 1; | |
193 | break; | |
194 | default: | |
195 | ret = 0; | |
196 | break; | |
197 | } | |
198 | return (ret); | |
199 | } | |
d02b48c6 | 200 | |
0e1c0612 | 201 | static int sock_puts(BIO *bp, const char *str) |
0f113f3e MC |
202 | { |
203 | int n, ret; | |
d02b48c6 | 204 | |
0f113f3e MC |
205 | n = strlen(str); |
206 | ret = sock_write(bp, str, n); | |
207 | return (ret); | |
208 | } | |
d02b48c6 | 209 | |
6b691a5c | 210 | int BIO_sock_should_retry(int i) |
0f113f3e MC |
211 | { |
212 | int err; | |
58964a49 | 213 | |
0f113f3e MC |
214 | if ((i == 0) || (i == -1)) { |
215 | err = get_last_socket_error(); | |
d02b48c6 | 216 | |
0f113f3e MC |
217 | return (BIO_sock_non_fatal_error(err)); |
218 | } | |
219 | return (0); | |
220 | } | |
d02b48c6 | 221 | |
6b691a5c | 222 | int BIO_sock_non_fatal_error(int err) |
0f113f3e MC |
223 | { |
224 | switch (err) { | |
1fbab1dc | 225 | # if defined(OPENSSL_SYS_WINDOWS) |
0f113f3e MC |
226 | # if defined(WSAEWOULDBLOCK) |
227 | case WSAEWOULDBLOCK: | |
228 | # endif | |
d02b48c6 RE |
229 | # endif |
230 | ||
0f113f3e MC |
231 | # ifdef EWOULDBLOCK |
232 | # ifdef WSAEWOULDBLOCK | |
233 | # if WSAEWOULDBLOCK != EWOULDBLOCK | |
234 | case EWOULDBLOCK: | |
235 | # endif | |
236 | # else | |
237 | case EWOULDBLOCK: | |
dfeab068 | 238 | # endif |
d02b48c6 | 239 | # endif |
d02b48c6 | 240 | |
0f113f3e MC |
241 | # if defined(ENOTCONN) |
242 | case ENOTCONN: | |
243 | # endif | |
244 | ||
245 | # ifdef EINTR | |
246 | case EINTR: | |
247 | # endif | |
248 | ||
249 | # ifdef EAGAIN | |
250 | # if EWOULDBLOCK != EAGAIN | |
251 | case EAGAIN: | |
d02b48c6 | 252 | # endif |
d02b48c6 | 253 | # endif |
d02b48c6 | 254 | |
0f113f3e MC |
255 | # ifdef EPROTO |
256 | case EPROTO: | |
257 | # endif | |
58964a49 | 258 | |
0f113f3e MC |
259 | # ifdef EINPROGRESS |
260 | case EINPROGRESS: | |
261 | # endif | |
d02b48c6 | 262 | |
0f113f3e MC |
263 | # ifdef EALREADY |
264 | case EALREADY: | |
d02b48c6 | 265 | # endif |
0f113f3e MC |
266 | return (1); |
267 | /* break; */ | |
268 | default: | |
269 | break; | |
270 | } | |
271 | return (0); | |
272 | } | |
273 | ||
274 | #endif /* #ifndef OPENSSL_NO_SOCK */ |