OLD | NEW |
| (Empty) |
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 | |
59 #include <stdio.h> | |
60 #include <errno.h> | |
61 #define USE_SOCKETS | |
62 #include "cryptlib.h" | |
63 | |
64 #ifndef OPENSSL_NO_SOCK | |
65 | |
66 #include <openssl/bio.h> | |
67 | |
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 | |
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); | |
78 static int sock_new(BIO *h); | |
79 static int sock_free(BIO *data); | |
80 int BIO_sock_should_retry(int s); | |
81 | |
82 static BIO_METHOD methods_sockp= | |
83 { | |
84 BIO_TYPE_SOCKET, | |
85 "socket", | |
86 sock_write, | |
87 sock_read, | |
88 sock_puts, | |
89 NULL, /* sock_gets, */ | |
90 sock_ctrl, | |
91 sock_new, | |
92 sock_free, | |
93 NULL, | |
94 }; | |
95 | |
96 BIO_METHOD *BIO_s_socket(void) | |
97 { | |
98 return(&methods_sockp); | |
99 } | |
100 | |
101 BIO *BIO_new_socket(int fd, int close_flag) | |
102 { | |
103 BIO *ret; | |
104 | |
105 ret=BIO_new(BIO_s_socket()); | |
106 if (ret == NULL) return(NULL); | |
107 BIO_set_fd(ret,fd,close_flag); | |
108 return(ret); | |
109 } | |
110 | |
111 static int sock_new(BIO *bi) | |
112 { | |
113 bi->init=0; | |
114 bi->num=0; | |
115 bi->ptr=NULL; | |
116 bi->flags=0; | |
117 return(1); | |
118 } | |
119 | |
120 static int sock_free(BIO *a) | |
121 { | |
122 if (a == NULL) return(0); | |
123 if (a->shutdown) | |
124 { | |
125 if (a->init) | |
126 { | |
127 SHUTDOWN2(a->num); | |
128 } | |
129 a->init=0; | |
130 a->flags=0; | |
131 } | |
132 return(1); | |
133 } | |
134 | |
135 static int sock_read(BIO *b, char *out, int outl) | |
136 { | |
137 int ret=0; | |
138 | |
139 if (out != NULL) | |
140 { | |
141 clear_socket_error(); | |
142 ret=readsocket(b->num,out,outl); | |
143 BIO_clear_retry_flags(b); | |
144 if (ret <= 0) | |
145 { | |
146 if (BIO_sock_should_retry(ret)) | |
147 BIO_set_retry_read(b); | |
148 } | |
149 } | |
150 return(ret); | |
151 } | |
152 | |
153 static int sock_write(BIO *b, const char *in, int inl) | |
154 { | |
155 int ret; | |
156 | |
157 clear_socket_error(); | |
158 ret=writesocket(b->num,in,inl); | |
159 BIO_clear_retry_flags(b); | |
160 if (ret <= 0) | |
161 { | |
162 if (BIO_sock_should_retry(ret)) | |
163 BIO_set_retry_write(b); | |
164 } | |
165 return(ret); | |
166 } | |
167 | |
168 static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) | |
169 { | |
170 long ret=1; | |
171 int *ip; | |
172 | |
173 switch (cmd) | |
174 { | |
175 case BIO_C_SET_FD: | |
176 sock_free(b); | |
177 b->num= *((int *)ptr); | |
178 b->shutdown=(int)num; | |
179 b->init=1; | |
180 break; | |
181 case BIO_C_GET_FD: | |
182 if (b->init) | |
183 { | |
184 ip=(int *)ptr; | |
185 if (ip != NULL) *ip=b->num; | |
186 ret=b->num; | |
187 } | |
188 else | |
189 ret= -1; | |
190 break; | |
191 case BIO_CTRL_GET_CLOSE: | |
192 ret=b->shutdown; | |
193 break; | |
194 case BIO_CTRL_SET_CLOSE: | |
195 b->shutdown=(int)num; | |
196 break; | |
197 case BIO_CTRL_DUP: | |
198 case BIO_CTRL_FLUSH: | |
199 ret=1; | |
200 break; | |
201 default: | |
202 ret=0; | |
203 break; | |
204 } | |
205 return(ret); | |
206 } | |
207 | |
208 static int sock_puts(BIO *bp, const char *str) | |
209 { | |
210 int n,ret; | |
211 | |
212 n=strlen(str); | |
213 ret=sock_write(bp,str,n); | |
214 return(ret); | |
215 } | |
216 | |
217 int BIO_sock_should_retry(int i) | |
218 { | |
219 int err; | |
220 | |
221 if ((i == 0) || (i == -1)) | |
222 { | |
223 err=get_last_socket_error(); | |
224 | |
225 #if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not?
Ben 4/1/99 */ | |
226 if ((i == -1) && (err == 0)) | |
227 return(1); | |
228 #endif | |
229 | |
230 return(BIO_sock_non_fatal_error(err)); | |
231 } | |
232 return(0); | |
233 } | |
234 | |
235 int BIO_sock_non_fatal_error(int err) | |
236 { | |
237 switch (err) | |
238 { | |
239 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_NETWARE) | |
240 # if defined(WSAEWOULDBLOCK) | |
241 case WSAEWOULDBLOCK: | |
242 # endif | |
243 | |
244 # if 0 /* This appears to always be an error */ | |
245 # if defined(WSAENOTCONN) | |
246 case WSAENOTCONN: | |
247 # endif | |
248 # endif | |
249 #endif | |
250 | |
251 #ifdef EWOULDBLOCK | |
252 # ifdef WSAEWOULDBLOCK | |
253 # if WSAEWOULDBLOCK != EWOULDBLOCK | |
254 case EWOULDBLOCK: | |
255 # endif | |
256 # else | |
257 case EWOULDBLOCK: | |
258 # endif | |
259 #endif | |
260 | |
261 #if defined(ENOTCONN) | |
262 case ENOTCONN: | |
263 #endif | |
264 | |
265 #ifdef EINTR | |
266 case EINTR: | |
267 #endif | |
268 | |
269 #ifdef EAGAIN | |
270 # if EWOULDBLOCK != EAGAIN | |
271 case EAGAIN: | |
272 # endif | |
273 #endif | |
274 | |
275 #ifdef EPROTO | |
276 case EPROTO: | |
277 #endif | |
278 | |
279 #ifdef EINPROGRESS | |
280 case EINPROGRESS: | |
281 #endif | |
282 | |
283 #ifdef EALREADY | |
284 case EALREADY: | |
285 #endif | |
286 return(1); | |
287 /* break; */ | |
288 default: | |
289 break; | |
290 } | |
291 return(0); | |
292 } | |
293 | |
294 #endif /* #ifndef OPENSSL_NO_SOCK */ | |
OLD | NEW |