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Fix server behaviour when facing backwards-compatible client hellos.
[thirdparty/openssl.git] / crypto / bio / bio.h
1 /* crypto/bio/bio.h */
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 #ifndef HEADER_BIO_H
60 #define HEADER_BIO_H
61
62 #ifdef __cplusplus
63 extern "C" {
64 #endif
65
66 #include <stdio.h>
67 #include <stdlib.h>
68 #include <openssl/crypto.h>
69
70 /* These are the 'types' of BIOs */
71 #define BIO_TYPE_NONE 0
72 #define BIO_TYPE_MEM (1|0x0400)
73 #define BIO_TYPE_FILE (2|0x0400)
74
75 #define BIO_TYPE_FD (4|0x0400|0x0100)
76 #define BIO_TYPE_SOCKET (5|0x0400|0x0100)
77 #define BIO_TYPE_NULL (6|0x0400)
78 #define BIO_TYPE_SSL (7|0x0200)
79 #define BIO_TYPE_MD (8|0x0200) /* pasive filter */
80 #define BIO_TYPE_BUFFER (9|0x0200) /* filter */
81 #define BIO_TYPE_CIPHER (10|0x0200) /* filter */
82 #define BIO_TYPE_BASE64 (11|0x0200) /* filter */
83 #define BIO_TYPE_CONNECT (12|0x0400|0x0100) /* socket - connect */
84 #define BIO_TYPE_ACCEPT (13|0x0400|0x0100) /* socket for accept */
85 #define BIO_TYPE_PROXY_CLIENT (14|0x0200) /* client proxy BIO */
86 #define BIO_TYPE_PROXY_SERVER (15|0x0200) /* server proxy BIO */
87 #define BIO_TYPE_NBIO_TEST (16|0x0200) /* server proxy BIO */
88 #define BIO_TYPE_NULL_FILTER (17|0x0200)
89 #define BIO_TYPE_BER (18|0x0200) /* BER -> bin filter */
90 #define BIO_TYPE_BIO (19|0x0400) /* (half a) BIO pair */
91
92 #define BIO_TYPE_DESCRIPTOR 0x0100 /* socket, fd, connect or accept */
93 #define BIO_TYPE_FILTER 0x0200
94 #define BIO_TYPE_SOURCE_SINK 0x0400
95
96 /* BIO_FILENAME_READ|BIO_CLOSE to open or close on free.
97 * BIO_set_fp(in,stdin,BIO_NOCLOSE); */
98 #define BIO_NOCLOSE 0x00
99 #define BIO_CLOSE 0x01
100
101 /* These are used in the following macros and are passed to
102 * BIO_ctrl() */
103 #define BIO_CTRL_RESET 1 /* opt - rewind/zero etc */
104 #define BIO_CTRL_EOF 2 /* opt - are we at the eof */
105 #define BIO_CTRL_INFO 3 /* opt - extra tit-bits */
106 #define BIO_CTRL_SET 4 /* man - set the 'IO' type */
107 #define BIO_CTRL_GET 5 /* man - get the 'IO' type */
108 #define BIO_CTRL_PUSH 6 /* opt - internal, used to signify change */
109 #define BIO_CTRL_POP 7 /* opt - internal, used to signify change */
110 #define BIO_CTRL_GET_CLOSE 8 /* man - set the 'close' on free */
111 #define BIO_CTRL_SET_CLOSE 9 /* man - set the 'close' on free */
112 #define BIO_CTRL_PENDING 10 /* opt - is their more data buffered */
113 #define BIO_CTRL_FLUSH 11 /* opt - 'flush' buffered output */
114 #define BIO_CTRL_DUP 12 /* man - extra stuff for 'duped' BIO */
115 #define BIO_CTRL_WPENDING 13 /* opt - number of bytes still to write */
116 /* callback is int cb(BIO *bio,state,ret); */
117 #define BIO_CTRL_SET_CALLBACK 14 /* opt - set callback function */
118 #define BIO_CTRL_GET_CALLBACK 15 /* opt - set callback function */
119
120 #define BIO_CTRL_SET_FILENAME 30 /* BIO_s_file special */
121
122 /* modifiers */
123 #define BIO_FP_READ 0x02
124 #define BIO_FP_WRITE 0x04
125 #define BIO_FP_APPEND 0x08
126 #define BIO_FP_TEXT 0x10
127
128 #define BIO_FLAGS_READ 0x01
129 #define BIO_FLAGS_WRITE 0x02
130 #define BIO_FLAGS_IO_SPECIAL 0x04
131 #define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL)
132 #define BIO_FLAGS_SHOULD_RETRY 0x08
133
134 /* Used in BIO_gethostbyname() */
135 #define BIO_GHBN_CTRL_HITS 1
136 #define BIO_GHBN_CTRL_MISSES 2
137 #define BIO_GHBN_CTRL_CACHE_SIZE 3
138 #define BIO_GHBN_CTRL_GET_ENTRY 4
139 #define BIO_GHBN_CTRL_FLUSH 5
140
141 /* Mostly used in the SSL BIO */
142 /* Not used anymore
143 * #define BIO_FLAGS_PROTOCOL_DELAYED_READ 0x10
144 * #define BIO_FLAGS_PROTOCOL_DELAYED_WRITE 0x20
145 * #define BIO_FLAGS_PROTOCOL_STARTUP 0x40
146 */
147
148 #define BIO_FLAGS_BASE64_NO_NL 0x100
149
150 /* This is used with memory BIOs: it means we shouldn't free up or change the
151 * data in any way.
152 */
153 #define BIO_FLAGS_MEM_RDONLY 0x200
154
155 #define BIO_set_flags(b,f) ((b)->flags|=(f))
156 #define BIO_get_flags(b) ((b)->flags)
157 #define BIO_set_retry_special(b) \
158 ((b)->flags|=(BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
159 #define BIO_set_retry_read(b) \
160 ((b)->flags|=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
161 #define BIO_set_retry_write(b) \
162 ((b)->flags|=(BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))
163
164 /* These are normally used internally in BIOs */
165 #define BIO_clear_flags(b,f) ((b)->flags&= ~(f))
166 #define BIO_clear_retry_flags(b) \
167 ((b)->flags&= ~(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
168 #define BIO_get_retry_flags(b) \
169 ((b)->flags&(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
170
171 /* These shouldbe used by the application to tell why we should retry */
172 #define BIO_should_read(a) ((a)->flags & BIO_FLAGS_READ)
173 #define BIO_should_write(a) ((a)->flags & BIO_FLAGS_WRITE)
174 #define BIO_should_io_special(a) ((a)->flags & BIO_FLAGS_IO_SPECIAL)
175 #define BIO_retry_type(a) ((a)->flags & BIO_FLAGS_RWS)
176 #define BIO_should_retry(a) ((a)->flags & BIO_FLAGS_SHOULD_RETRY)
177
178 /* The next two are used in conjunction with the
179 * BIO_should_io_special() condition. After this returns true,
180 * BIO *BIO_get_retry_BIO(BIO *bio, int *reason); will walk the BIO
181 * stack and return the 'reason' for the special and the offending BIO.
182 * Given a BIO, BIO_get_retry_reason(bio) will return the code. */
183 /* Returned from the SSL bio when the certificate retrieval code had an error */
184 #define BIO_RR_SSL_X509_LOOKUP 0x01
185 /* Returned from the connect BIO when a connect would have blocked */
186 #define BIO_RR_CONNECT 0x02
187
188 /* These are passed by the BIO callback */
189 #define BIO_CB_FREE 0x01
190 #define BIO_CB_READ 0x02
191 #define BIO_CB_WRITE 0x03
192 #define BIO_CB_PUTS 0x04
193 #define BIO_CB_GETS 0x05
194 #define BIO_CB_CTRL 0x06
195
196 /* The callback is called before and after the underling operation,
197 * The BIO_CB_RETURN flag indicates if it is after the call */
198 #define BIO_CB_RETURN 0x80
199 #define BIO_CB_return(a) ((a)|BIO_CB_RETURN))
200 #define BIO_cb_pre(a) (!((a)&BIO_CB_RETURN))
201 #define BIO_cb_post(a) ((a)&BIO_CB_RETURN)
202
203 #define BIO_set_callback(b,cb) ((b)->callback=(cb))
204 #define BIO_set_callback_arg(b,arg) ((b)->cb_arg=(char *)(arg))
205 #define BIO_get_callback_arg(b) ((b)->cb_arg)
206 #define BIO_get_callback(b) ((b)->callback)
207 #define BIO_method_name(b) ((b)->method->name)
208 #define BIO_method_type(b) ((b)->method->type)
209
210 #ifndef WIN16
211 typedef struct bio_method_st
212 {
213 int type;
214 const char *name;
215 int (*bwrite)();
216 int (*bread)();
217 int (*bputs)();
218 int (*bgets)();
219 long (*ctrl)();
220 int (*create)();
221 int (*destroy)();
222 } BIO_METHOD;
223 #else
224 typedef struct bio_method_st
225 {
226 int type;
227 const char *name;
228 int (_far *bwrite)();
229 int (_far *bread)();
230 int (_far *bputs)();
231 int (_far *bgets)();
232 long (_far *ctrl)();
233 int (_far *create)();
234 int (_far *destroy)();
235 } BIO_METHOD;
236 #endif
237
238 typedef struct bio_st
239 {
240 BIO_METHOD *method;
241 /* bio, mode, argp, argi, argl, ret */
242 long (*callback)(struct bio_st *,int,const char *,int, long,long);
243 char *cb_arg; /* first argument for the callback */
244
245 int init;
246 int shutdown;
247 int flags; /* extra storage */
248 int retry_reason;
249 int num;
250 void *ptr;
251 struct bio_st *next_bio; /* used by filter BIOs */
252 struct bio_st *prev_bio; /* used by filter BIOs */
253 int references;
254 unsigned long num_read;
255 unsigned long num_write;
256
257 CRYPTO_EX_DATA ex_data;
258 } BIO;
259
260 typedef struct bio_f_buffer_ctx_struct
261 {
262 /* BIO *bio; */ /* this is now in the BIO struct */
263 int ibuf_size; /* how big is the input buffer */
264 int obuf_size; /* how big is the output buffer */
265
266 char *ibuf; /* the char array */
267 int ibuf_len; /* how many bytes are in it */
268 int ibuf_off; /* write/read offset */
269
270 char *obuf; /* the char array */
271 int obuf_len; /* how many bytes are in it */
272 int obuf_off; /* write/read offset */
273 } BIO_F_BUFFER_CTX;
274
275 /* connect BIO stuff */
276 #define BIO_CONN_S_BEFORE 1
277 #define BIO_CONN_S_GET_IP 2
278 #define BIO_CONN_S_GET_PORT 3
279 #define BIO_CONN_S_CREATE_SOCKET 4
280 #define BIO_CONN_S_CONNECT 5
281 #define BIO_CONN_S_OK 6
282 #define BIO_CONN_S_BLOCKED_CONNECT 7
283 #define BIO_CONN_S_NBIO 8
284 /*#define BIO_CONN_get_param_hostname BIO_ctrl */
285
286 #define BIO_number_read(b) ((b)->num_read)
287 #define BIO_number_written(b) ((b)->num_write)
288
289 #define BIO_C_SET_CONNECT 100
290 #define BIO_C_DO_STATE_MACHINE 101
291 #define BIO_C_SET_NBIO 102
292 #define BIO_C_SET_PROXY_PARAM 103
293 #define BIO_C_SET_FD 104
294 #define BIO_C_GET_FD 105
295 #define BIO_C_SET_FILE_PTR 106
296 #define BIO_C_GET_FILE_PTR 107
297 #define BIO_C_SET_FILENAME 108
298 #define BIO_C_SET_SSL 109
299 #define BIO_C_GET_SSL 110
300 #define BIO_C_SET_MD 111
301 #define BIO_C_GET_MD 112
302 #define BIO_C_GET_CIPHER_STATUS 113
303 #define BIO_C_SET_BUF_MEM 114
304 #define BIO_C_GET_BUF_MEM_PTR 115
305 #define BIO_C_GET_BUFF_NUM_LINES 116
306 #define BIO_C_SET_BUFF_SIZE 117
307 #define BIO_C_SET_ACCEPT 118
308 #define BIO_C_SSL_MODE 119
309 #define BIO_C_GET_MD_CTX 120
310 #define BIO_C_GET_PROXY_PARAM 121
311 #define BIO_C_SET_BUFF_READ_DATA 122 /* data to read first */
312 #define BIO_C_GET_CONNECT 123
313 #define BIO_C_GET_ACCEPT 124
314 #define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125
315 #define BIO_C_GET_SSL_NUM_RENEGOTIATES 126
316 #define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127
317 #define BIO_C_FILE_SEEK 128
318 #define BIO_C_GET_CIPHER_CTX 129
319 #define BIO_C_SET_BUF_MEM_EOF_RETURN 130/*return end of input value*/
320 #define BIO_C_SET_BIND_MODE 131
321 #define BIO_C_GET_BIND_MODE 132
322 #define BIO_C_FILE_TELL 133
323 #define BIO_C_GET_SOCKS 134
324 #define BIO_C_SET_SOCKS 135
325
326 #define BIO_C_SET_WRITE_BUF_SIZE 136/* for BIO_s_bio */
327 #define BIO_C_GET_WRITE_BUF_SIZE 137
328 #define BIO_C_MAKE_BIO_PAIR 138
329 #define BIO_C_DESTROY_BIO_PAIR 139
330 #define BIO_C_GET_WRITE_GUARANTEE 140
331 #define BIO_C_GET_READ_REQUEST 141
332 #define BIO_C_SHUTDOWN_WR 142
333 #define BIO_C_NREAD0 143
334 #define BIO_C_NREAD 144
335 #define BIO_C_NWRITE0 145
336 #define BIO_C_NWRITE 146
337
338
339 #define BIO_set_app_data(s,arg) BIO_set_ex_data(s,0,(char *)arg)
340 #define BIO_get_app_data(s) BIO_get_ex_data(s,0)
341
342 /* BIO_s_connect() and BIO_s_socks4a_connect() */
343 #define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0,(char *)name)
344 #define BIO_set_conn_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,1,(char *)port)
345 #define BIO_set_conn_ip(b,ip) BIO_ctrl(b,BIO_C_SET_CONNECT,2,(char *)ip)
346 #define BIO_set_conn_int_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,3,(char *)port)
347 #define BIO_get_conn_hostname(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0)
348 #define BIO_get_conn_port(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1)
349 #define BIO_get_conn_ip(b,ip) BIO_ptr_ctrl(b,BIO_C_SET_CONNECT,2)
350 #define BIO_get_conn_int_port(b,port) BIO_int_ctrl(b,BIO_C_SET_CONNECT,3,port)
351
352
353 #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
354
355 /* BIO_s_accept_socket() */
356 #define BIO_set_accept_port(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0,(char *)name)
357 #define BIO_get_accept_port(b) BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0)
358 /* #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */
359 #define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,1,(n)?"a":NULL)
360 #define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(char *)bio)
361
362 #define BIO_BIND_NORMAL 0
363 #define BIO_BIND_REUSEADDR_IF_UNUSED 1
364 #define BIO_BIND_REUSEADDR 2
365 #define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL)
366 #define BIO_get_bind_mode(b,mode) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL)
367
368 #define BIO_do_connect(b) BIO_do_handshake(b)
369 #define BIO_do_accept(b) BIO_do_handshake(b)
370 #define BIO_do_handshake(b) BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL)
371
372 /* BIO_s_proxy_client() */
373 #define BIO_set_url(b,url) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,0,(char *)(url))
374 #define BIO_set_proxies(b,p) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,1,(char *)(p))
375 /* BIO_set_nbio(b,n) */
376 #define BIO_set_filter_bio(b,s) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,2,(char *)(s))
377 /* BIO *BIO_get_filter_bio(BIO *bio); */
378 #define BIO_set_proxy_cb(b,cb) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,3,(char *)(cb))
379 #define BIO_set_proxy_header(b,sk) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,4,(char *)sk)
380 #define BIO_set_no_connect_return(b,bool) BIO_int_ctrl(b,BIO_C_SET_PROXY_PARAM,5,bool)
381
382 #define BIO_get_proxy_header(b,skp) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,0,(char *)skp)
383 #define BIO_get_proxies(b,pxy_p) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,1,(char *)(pxy_p))
384 #define BIO_get_url(b,url) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,2,(char *)(url))
385 #define BIO_get_no_connect_return(b) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,5,NULL)
386
387 #define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
388 #define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c)
389
390 #define BIO_set_fp(b,fp,c) BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)fp)
391 #define BIO_get_fp(b,fpp) BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)fpp)
392
393 #define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL)
394 #define BIO_tell(b) (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL)
395
396 /* name is cast to lose const, but might be better to route through a function
397 so we can do it safely */
398 #ifdef CONST_STRICT
399 /* If you are wondering why this isn't defined, its because CONST_STRICT is
400 * purely a compile-time kludge to allow const to be checked.
401 */
402 int BIO_read_filename(BIO *b,const char *name);
403 #else
404 #define BIO_read_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
405 BIO_CLOSE|BIO_FP_READ,(char *)name)
406 #endif
407 #define BIO_write_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
408 BIO_CLOSE|BIO_FP_WRITE,name)
409 #define BIO_append_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
410 BIO_CLOSE|BIO_FP_APPEND,name)
411 #define BIO_rw_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
412 BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
413
414 /* WARNING WARNING, this ups the reference count on the read bio of the
415 * SSL structure. This is because the ssl read BIO is now pointed to by
416 * the next_bio field in the bio. So when you free the BIO, make sure
417 * you are doing a BIO_free_all() to catch the underlying BIO. */
418 #define BIO_set_ssl(b,ssl,c) BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)ssl)
419 #define BIO_get_ssl(b,sslp) BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)sslp)
420 #define BIO_set_ssl_mode(b,client) BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL)
421 #define BIO_set_ssl_renegotiate_bytes(b,num) \
422 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL);
423 #define BIO_get_num_renegotiates(b) \
424 BIO_ctrl(b,BIO_C_SET_SSL_NUM_RENEGOTIATES,0,NULL);
425 #define BIO_set_ssl_renegotiate_timeout(b,seconds) \
426 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL);
427
428 /* defined in evp.h */
429 /* #define BIO_set_md(b,md) BIO_ctrl(b,BIO_C_SET_MD,1,(char *)md) */
430
431 #define BIO_get_mem_data(b,pp) BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)pp)
432 #define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)bm)
433 #define BIO_get_mem_ptr(b,pp) BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0,(char *)pp)
434 #define BIO_set_mem_eof_return(b,v) \
435 BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL)
436
437 /* For the BIO_f_buffer() type */
438 #define BIO_get_buffer_num_lines(b) BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL)
439 #define BIO_set_buffer_size(b,size) BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL)
440 #define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0)
441 #define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1)
442 #define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf)
443
444 /* Don't use the next one unless you know what you are doing :-) */
445 #define BIO_dup_state(b,ret) BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret))
446
447 #define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
448 #define BIO_eof(b) (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL)
449 #define BIO_set_close(b,c) (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL)
450 #define BIO_get_close(b) (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL)
451 #define BIO_pending(b) (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL)
452 #define BIO_wpending(b) (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL)
453 /* ...pending macros have inappropriate return type */
454 size_t BIO_ctrl_pending(BIO *b);
455 size_t BIO_ctrl_wpending(BIO *b);
456 #define BIO_flush(b) (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL)
457 #define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0,(char *)cbp)
458 #define BIO_set_info_callback(b,cb) (int)BIO_ctrl(b,BIO_CTRL_SET_CALLBACK,0,(char *)cb)
459
460 /* For the BIO_f_buffer() type */
461 #define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL)
462
463 /* For BIO_s_bio() */
464 #define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
465 #define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
466 #define BIO_make_bio_pair(b1,b2) (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
467 #define BIO_destroy_bio_pair(b) (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
468 /* macros with inappropriate type -- but ...pending macros use int too: */
469 #define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
470 #define BIO_get_read_request(b) (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
471 size_t BIO_ctrl_get_write_guarantee(BIO *b);
472 size_t BIO_ctrl_get_read_request(BIO *b);
473
474 #ifdef NO_STDIO
475 #define NO_FP_API
476 #endif
477
478
479 /* These two aren't currently implemented */
480 /* int BIO_get_ex_num(BIO *bio); */
481 /* void BIO_set_ex_free_func(BIO *bio,int idx,void (*cb)()); */
482 int BIO_set_ex_data(BIO *bio,int idx,char *data);
483 char *BIO_get_ex_data(BIO *bio,int idx);
484 int BIO_get_ex_new_index(long argl, char *argp, int (*new_func)(),
485 int (*dup_func)(), void (*free_func)());
486
487 # if defined(WIN16) && defined(_WINDLL)
488 BIO_METHOD *BIO_s_file_internal(void);
489 BIO *BIO_new_file_internal(char *filename, char *mode);
490 BIO *BIO_new_fp_internal(FILE *stream, int close_flag);
491 # define BIO_s_file BIO_s_file_internal
492 # define BIO_new_file BIO_new_file_internal
493 # define BIO_new_fp BIO_new_fp_internal
494 # else /* FP_API */
495 BIO_METHOD *BIO_s_file(void );
496 BIO *BIO_new_file(const char *filename, const char *mode);
497 BIO *BIO_new_fp(FILE *stream, int close_flag);
498 # define BIO_s_file_internal BIO_s_file
499 # define BIO_new_file_internal BIO_new_file
500 # define BIO_new_fp_internal BIO_s_file
501 # endif /* FP_API */
502 BIO * BIO_new(BIO_METHOD *type);
503 int BIO_set(BIO *a,BIO_METHOD *type);
504 int BIO_free(BIO *a);
505 int BIO_read(BIO *b, void *data, int len);
506 int BIO_gets(BIO *bp,char *buf, int size);
507 int BIO_write(BIO *b, const char *data, int len);
508 int BIO_puts(BIO *bp,const char *buf);
509 long BIO_ctrl(BIO *bp,int cmd,long larg,void *parg);
510 char * BIO_ptr_ctrl(BIO *bp,int cmd,long larg);
511 long BIO_int_ctrl(BIO *bp,int cmd,long larg,int iarg);
512 BIO * BIO_push(BIO *b,BIO *append);
513 BIO * BIO_pop(BIO *b);
514 void BIO_free_all(BIO *a);
515 BIO * BIO_find_type(BIO *b,int bio_type);
516 BIO * BIO_get_retry_BIO(BIO *bio, int *reason);
517 int BIO_get_retry_reason(BIO *bio);
518 BIO * BIO_dup_chain(BIO *in);
519
520 #if 0 /* not yet */
521 int BIO_nread0(BIO *bio, char **buf);
522 int BIO_nread(BIO *bio, char **buf, int num);
523 int BIO_nwrite0(BIO *bio, char **buf);
524 int BIO_nwrite(BIO *bio, char **buf, int num);
525 #endif
526
527 #ifndef WIN16
528 long BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
529 long argl,long ret);
530 #else
531 long _far _loadds BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
532 long argl,long ret);
533 #endif
534
535 BIO_METHOD *BIO_s_mem(void);
536 BIO *BIO_new_mem_buf(void *buf, int len);
537 BIO_METHOD *BIO_s_socket(void);
538 BIO_METHOD *BIO_s_connect(void);
539 BIO_METHOD *BIO_s_accept(void);
540 BIO_METHOD *BIO_s_fd(void);
541 BIO_METHOD *BIO_s_log(void);
542 BIO_METHOD *BIO_s_bio(void);
543 BIO_METHOD *BIO_s_null(void);
544 BIO_METHOD *BIO_f_null(void);
545 BIO_METHOD *BIO_f_buffer(void);
546 BIO_METHOD *BIO_f_nbio_test(void);
547 /* BIO_METHOD *BIO_f_ber(void); */
548
549 int BIO_sock_should_retry(int i);
550 int BIO_sock_non_fatal_error(int error);
551 int BIO_fd_should_retry(int i);
552 int BIO_fd_non_fatal_error(int error);
553 int BIO_dump(BIO *b,const char *bytes,int len);
554
555 struct hostent *BIO_gethostbyname(const char *name);
556 /* We might want a thread-safe interface too:
557 * struct hostent *BIO_gethostbyname_r(const char *name,
558 * struct hostent *result, void *buffer, size_t buflen);
559 * or something similar (caller allocates a struct hostent,
560 * pointed to by "result", and additional buffer space for the various
561 * substructures; if the buffer does not suffice, NULL is returned
562 * and an appropriate error code is set).
563 */
564 int BIO_sock_error(int sock);
565 int BIO_socket_ioctl(int fd, long type, unsigned long *arg);
566 int BIO_socket_nbio(int fd,int mode);
567 int BIO_get_port(const char *str, unsigned short *port_ptr);
568 int BIO_get_host_ip(const char *str, unsigned char *ip);
569 int BIO_get_accept_socket(char *host_port,int mode);
570 int BIO_accept(int sock,char **ip_port);
571 int BIO_sock_init(void );
572 void BIO_sock_cleanup(void);
573 int BIO_set_tcp_ndelay(int sock,int turn_on);
574
575 void ERR_load_BIO_strings(void );
576
577 BIO *BIO_new_socket(int sock, int close_flag);
578 BIO *BIO_new_fd(int fd, int close_flag);
579 BIO *BIO_new_connect(char *host_port);
580 BIO *BIO_new_accept(char *host_port);
581
582 int BIO_new_bio_pair(BIO **bio1, size_t writebuf1,
583 BIO **bio2, size_t writebuf2);
584 /* If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints.
585 * Otherwise returns 0 and sets *bio1 and *bio2 to NULL.
586 * Size 0 uses default value.
587 */
588
589 void BIO_copy_next_retry(BIO *b);
590
591 long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);
592
593 int BIO_printf(BIO *bio, ...);
594
595 /* BEGIN ERROR CODES */
596 /* The following lines are auto generated by the script mkerr.pl. Any changes
597 * made after this point may be overwritten when the script is next run.
598 */
599
600 /* Error codes for the BIO functions. */
601
602 /* Function codes. */
603 #define BIO_F_ACPT_STATE 100
604 #define BIO_F_BIO_ACCEPT 101
605 #define BIO_F_BIO_BER_GET_HEADER 102
606 #define BIO_F_BIO_CTRL 103
607 #define BIO_F_BIO_GETHOSTBYNAME 120
608 #define BIO_F_BIO_GETS 104
609 #define BIO_F_BIO_GET_ACCEPT_SOCKET 105
610 #define BIO_F_BIO_GET_HOST_IP 106
611 #define BIO_F_BIO_GET_PORT 107
612 #define BIO_F_BIO_MAKE_PAIR 121
613 #define BIO_F_BIO_NEW 108
614 #define BIO_F_BIO_NEW_FILE 109
615 #define BIO_F_BIO_NEW_MEM_BUF 126
616 #define BIO_F_BIO_NREAD 123
617 #define BIO_F_BIO_NREAD0 124
618 #define BIO_F_BIO_NWRITE 125
619 #define BIO_F_BIO_NWRITE0 122
620 #define BIO_F_BIO_PUTS 110
621 #define BIO_F_BIO_READ 111
622 #define BIO_F_BIO_SOCK_INIT 112
623 #define BIO_F_BIO_WRITE 113
624 #define BIO_F_BUFFER_CTRL 114
625 #define BIO_F_CONN_STATE 115
626 #define BIO_F_FILE_CTRL 116
627 #define BIO_F_MEM_WRITE 117
628 #define BIO_F_SSL_NEW 118
629 #define BIO_F_WSASTARTUP 119
630
631 /* Reason codes. */
632 #define BIO_R_ACCEPT_ERROR 100
633 #define BIO_R_BAD_FOPEN_MODE 101
634 #define BIO_R_BAD_HOSTNAME_LOOKUP 102
635 #define BIO_R_BROKEN_PIPE 124
636 #define BIO_R_CONNECT_ERROR 103
637 #define BIO_R_ERROR_SETTING_NBIO 104
638 #define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET 105
639 #define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET 106
640 #define BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET 107
641 #define BIO_R_INVALID_ARGUMENT 125
642 #define BIO_R_INVALID_IP_ADDRESS 108
643 #define BIO_R_IN_USE 123
644 #define BIO_R_KEEPALIVE 109
645 #define BIO_R_NBIO_CONNECT_ERROR 110
646 #define BIO_R_NO_ACCEPT_PORT_SPECIFIED 111
647 #define BIO_R_NO_HOSTNAME_SPECIFIED 112
648 #define BIO_R_NO_PORT_DEFINED 113
649 #define BIO_R_NO_PORT_SPECIFIED 114
650 #define BIO_R_NULL_PARAMETER 115
651 #define BIO_R_TAG_MISMATCH 116
652 #define BIO_R_UNABLE_TO_BIND_SOCKET 117
653 #define BIO_R_UNABLE_TO_CREATE_SOCKET 118
654 #define BIO_R_UNABLE_TO_LISTEN_SOCKET 119
655 #define BIO_R_UNINITIALIZED 120
656 #define BIO_R_UNSUPPORTED_METHOD 121
657 #define BIO_R_WRITE_TO_READ_ONLY_BIO 126
658 #define BIO_R_WSASTARTUP 122
659
660 #ifdef __cplusplus
661 }
662 #endif
663 #endif
664
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