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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. | |
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 | ||
d02b48c6 RE |
59 | #include <stdio.h> |
60 | #include <errno.h> | |
61 | #define USE_SOCKETS | |
62 | #include "cryptlib.h" | |
0d658ddf DSH |
63 | |
64 | #ifndef OPENSSL_NO_SOCK | |
65 | ||
ec577822 | 66 | #include <openssl/bio.h> |
d02b48c6 | 67 | |
8d6e6048 RL |
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 | |
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 | |
d02b48c6 RE |
82 | static BIO_METHOD methods_sockp= |
83 | { | |
58964a49 RE |
84 | BIO_TYPE_SOCKET, |
85 | "socket", | |
d02b48c6 RE |
86 | sock_write, |
87 | sock_read, | |
88 | sock_puts, | |
89 | NULL, /* sock_gets, */ | |
90 | sock_ctrl, | |
91 | sock_new, | |
92 | sock_free, | |
d3442bc7 | 93 | NULL, |
d02b48c6 RE |
94 | }; |
95 | ||
6b691a5c | 96 | BIO_METHOD *BIO_s_socket(void) |
d02b48c6 RE |
97 | { |
98 | return(&methods_sockp); | |
99 | } | |
d02b48c6 | 100 | |
6b691a5c | 101 | BIO *BIO_new_socket(int fd, int close_flag) |
d02b48c6 RE |
102 | { |
103 | BIO *ret; | |
104 | ||
d02b48c6 | 105 | ret=BIO_new(BIO_s_socket()); |
d02b48c6 RE |
106 | if (ret == NULL) return(NULL); |
107 | BIO_set_fd(ret,fd,close_flag); | |
108 | return(ret); | |
109 | } | |
110 | ||
6b691a5c | 111 | static int sock_new(BIO *bi) |
d02b48c6 RE |
112 | { |
113 | bi->init=0; | |
114 | bi->num=0; | |
115 | bi->ptr=NULL; | |
116 | bi->flags=0; | |
117 | return(1); | |
118 | } | |
119 | ||
6b691a5c | 120 | static int sock_free(BIO *a) |
d02b48c6 RE |
121 | { |
122 | if (a == NULL) return(0); | |
123 | if (a->shutdown) | |
124 | { | |
125 | if (a->init) | |
126 | { | |
17f389bb | 127 | SHUTDOWN2(a->num); |
d02b48c6 RE |
128 | } |
129 | a->init=0; | |
130 | a->flags=0; | |
131 | } | |
132 | return(1); | |
133 | } | |
134 | ||
6b691a5c | 135 | static int sock_read(BIO *b, char *out, int outl) |
d02b48c6 RE |
136 | { |
137 | int ret=0; | |
138 | ||
139 | if (out != NULL) | |
140 | { | |
58964a49 | 141 | clear_socket_error(); |
dfeab068 | 142 | ret=readsocket(b->num,out,outl); |
d02b48c6 RE |
143 | BIO_clear_retry_flags(b); |
144 | if (ret <= 0) | |
145 | { | |
d02b48c6 | 146 | if (BIO_sock_should_retry(ret)) |
d02b48c6 RE |
147 | BIO_set_retry_read(b); |
148 | } | |
149 | } | |
150 | return(ret); | |
151 | } | |
152 | ||
0e1c0612 | 153 | static int sock_write(BIO *b, const char *in, int inl) |
d02b48c6 RE |
154 | { |
155 | int ret; | |
156 | ||
58964a49 | 157 | clear_socket_error(); |
dfeab068 | 158 | ret=writesocket(b->num,in,inl); |
d02b48c6 RE |
159 | BIO_clear_retry_flags(b); |
160 | if (ret <= 0) | |
161 | { | |
d02b48c6 | 162 | if (BIO_sock_should_retry(ret)) |
d02b48c6 RE |
163 | BIO_set_retry_write(b); |
164 | } | |
165 | return(ret); | |
166 | } | |
167 | ||
0e1c0612 | 168 | static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) |
d02b48c6 RE |
169 | { |
170 | long ret=1; | |
171 | int *ip; | |
172 | ||
173 | switch (cmd) | |
174 | { | |
175 | case BIO_CTRL_RESET: | |
dfeab068 RE |
176 | num=0; |
177 | case BIO_C_FILE_SEEK: | |
d02b48c6 | 178 | ret=0; |
d02b48c6 | 179 | break; |
dfeab068 | 180 | case BIO_C_FILE_TELL: |
d02b48c6 RE |
181 | case BIO_CTRL_INFO: |
182 | ret=0; | |
183 | break; | |
184 | case BIO_C_SET_FD: | |
d02b48c6 | 185 | sock_free(b); |
d02b48c6 RE |
186 | b->num= *((int *)ptr); |
187 | b->shutdown=(int)num; | |
188 | b->init=1; | |
189 | break; | |
190 | case BIO_C_GET_FD: | |
191 | if (b->init) | |
192 | { | |
193 | ip=(int *)ptr; | |
194 | if (ip != NULL) *ip=b->num; | |
195 | ret=b->num; | |
196 | } | |
197 | else | |
198 | ret= -1; | |
199 | break; | |
200 | case BIO_CTRL_GET_CLOSE: | |
201 | ret=b->shutdown; | |
202 | break; | |
203 | case BIO_CTRL_SET_CLOSE: | |
204 | b->shutdown=(int)num; | |
205 | break; | |
206 | case BIO_CTRL_PENDING: | |
207 | case BIO_CTRL_WPENDING: | |
208 | ret=0; | |
209 | break; | |
210 | case BIO_CTRL_DUP: | |
211 | case BIO_CTRL_FLUSH: | |
212 | ret=1; | |
213 | break; | |
d02b48c6 RE |
214 | default: |
215 | ret=0; | |
216 | break; | |
217 | } | |
218 | return(ret); | |
219 | } | |
220 | ||
0e1c0612 | 221 | static int sock_puts(BIO *bp, const char *str) |
d02b48c6 RE |
222 | { |
223 | int n,ret; | |
224 | ||
225 | n=strlen(str); | |
d02b48c6 | 226 | ret=sock_write(bp,str,n); |
d02b48c6 RE |
227 | return(ret); |
228 | } | |
229 | ||
6b691a5c | 230 | int BIO_sock_should_retry(int i) |
d02b48c6 | 231 | { |
58964a49 RE |
232 | int err; |
233 | ||
d02b48c6 RE |
234 | if ((i == 0) || (i == -1)) |
235 | { | |
58964a49 | 236 | err=get_last_socket_error(); |
d02b48c6 | 237 | |
bc36ee62 | 238 | #if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */ |
58964a49 | 239 | if ((i == -1) && (err == 0)) |
d02b48c6 RE |
240 | return(1); |
241 | #endif | |
58964a49 | 242 | |
58964a49 | 243 | return(BIO_sock_non_fatal_error(err)); |
d02b48c6 RE |
244 | } |
245 | return(0); | |
246 | } | |
247 | ||
6b691a5c | 248 | int BIO_sock_non_fatal_error(int err) |
d02b48c6 RE |
249 | { |
250 | switch (err) | |
251 | { | |
4d8743f4 | 252 | #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_NETWARE) |
d02b48c6 RE |
253 | # if defined(WSAEWOULDBLOCK) |
254 | case WSAEWOULDBLOCK: | |
255 | # endif | |
256 | ||
dfeab068 RE |
257 | # if 0 /* This appears to always be an error */ |
258 | # if defined(WSAENOTCONN) | |
d02b48c6 | 259 | case WSAENOTCONN: |
dfeab068 | 260 | # endif |
d02b48c6 RE |
261 | # endif |
262 | #endif | |
263 | ||
264 | #ifdef EWOULDBLOCK | |
265 | # ifdef WSAEWOULDBLOCK | |
266 | # if WSAEWOULDBLOCK != EWOULDBLOCK | |
267 | case EWOULDBLOCK: | |
268 | # endif | |
269 | # else | |
270 | case EWOULDBLOCK: | |
271 | # endif | |
272 | #endif | |
273 | ||
58964a49 RE |
274 | #if defined(ENOTCONN) |
275 | case ENOTCONN: | |
276 | #endif | |
277 | ||
d02b48c6 RE |
278 | #ifdef EINTR |
279 | case EINTR: | |
280 | #endif | |
281 | ||
282 | #ifdef EAGAIN | |
9ba4cc00 | 283 | # if EWOULDBLOCK != EAGAIN |
d02b48c6 RE |
284 | case EAGAIN: |
285 | # endif | |
286 | #endif | |
287 | ||
288 | #ifdef EPROTO | |
289 | case EPROTO: | |
290 | #endif | |
291 | ||
292 | #ifdef EINPROGRESS | |
293 | case EINPROGRESS: | |
294 | #endif | |
295 | ||
296 | #ifdef EALREADY | |
297 | case EALREADY: | |
298 | #endif | |
299 | return(1); | |
dfeab068 | 300 | /* break; */ |
d02b48c6 RE |
301 | default: |
302 | break; | |
303 | } | |
304 | return(0); | |
305 | } | |
0d658ddf DSH |
306 | |
307 | #endif /* #ifndef OPENSSL_NO_SOCK */ |