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Add DTLS support.
[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 #include <openssl/e_os2.h>
63
64 #ifndef OPENSSL_NO_FP_API
65 # include <stdio.h>
66 #endif
67 #include <stdarg.h>
68
69 #include <openssl/crypto.h>
70
71 #ifdef __cplusplus
72 extern "C" {
73 #endif
74
75 /* These are the 'types' of BIOs */
76 #define BIO_TYPE_NONE 0
77 #define BIO_TYPE_MEM (1|0x0400)
78 #define BIO_TYPE_FILE (2|0x0400)
79
80 #define BIO_TYPE_FD (4|0x0400|0x0100)
81 #define BIO_TYPE_SOCKET (5|0x0400|0x0100)
82 #define BIO_TYPE_NULL (6|0x0400)
83 #define BIO_TYPE_SSL (7|0x0200)
84 #define BIO_TYPE_MD (8|0x0200) /* passive filter */
85 #define BIO_TYPE_BUFFER (9|0x0200) /* filter */
86 #define BIO_TYPE_CIPHER (10|0x0200) /* filter */
87 #define BIO_TYPE_BASE64 (11|0x0200) /* filter */
88 #define BIO_TYPE_CONNECT (12|0x0400|0x0100) /* socket - connect */
89 #define BIO_TYPE_ACCEPT (13|0x0400|0x0100) /* socket for accept */
90 #define BIO_TYPE_PROXY_CLIENT (14|0x0200) /* client proxy BIO */
91 #define BIO_TYPE_PROXY_SERVER (15|0x0200) /* server proxy BIO */
92 #define BIO_TYPE_NBIO_TEST (16|0x0200) /* server proxy BIO */
93 #define BIO_TYPE_NULL_FILTER (17|0x0200)
94 #define BIO_TYPE_BER (18|0x0200) /* BER -> bin filter */
95 #define BIO_TYPE_BIO (19|0x0400) /* (half a) BIO pair */
96 #define BIO_TYPE_LINEBUFFER (20|0x0200) /* filter */
97 #define BIO_TYPE_DGRAM (21|0x0400|0x0100)
98
99 #define BIO_TYPE_DESCRIPTOR 0x0100 /* socket, fd, connect or accept */
100 #define BIO_TYPE_FILTER 0x0200
101 #define BIO_TYPE_SOURCE_SINK 0x0400
102
103 /* BIO_FILENAME_READ|BIO_CLOSE to open or close on free.
104 * BIO_set_fp(in,stdin,BIO_NOCLOSE); */
105 #define BIO_NOCLOSE 0x00
106 #define BIO_CLOSE 0x01
107
108 /* These are used in the following macros and are passed to
109 * BIO_ctrl() */
110 #define BIO_CTRL_RESET 1 /* opt - rewind/zero etc */
111 #define BIO_CTRL_EOF 2 /* opt - are we at the eof */
112 #define BIO_CTRL_INFO 3 /* opt - extra tit-bits */
113 #define BIO_CTRL_SET 4 /* man - set the 'IO' type */
114 #define BIO_CTRL_GET 5 /* man - get the 'IO' type */
115 #define BIO_CTRL_PUSH 6 /* opt - internal, used to signify change */
116 #define BIO_CTRL_POP 7 /* opt - internal, used to signify change */
117 #define BIO_CTRL_GET_CLOSE 8 /* man - set the 'close' on free */
118 #define BIO_CTRL_SET_CLOSE 9 /* man - set the 'close' on free */
119 #define BIO_CTRL_PENDING 10 /* opt - is their more data buffered */
120 #define BIO_CTRL_FLUSH 11 /* opt - 'flush' buffered output */
121 #define BIO_CTRL_DUP 12 /* man - extra stuff for 'duped' BIO */
122 #define BIO_CTRL_WPENDING 13 /* opt - number of bytes still to write */
123 /* callback is int cb(BIO *bio,state,ret); */
124 #define BIO_CTRL_SET_CALLBACK 14 /* opt - set callback function */
125 #define BIO_CTRL_GET_CALLBACK 15 /* opt - set callback function */
126
127 #define BIO_CTRL_SET_FILENAME 30 /* BIO_s_file special */
128
129 /* dgram BIO stuff */
130 #define BIO_CTRL_DGRAM_CONNECT 31 /* BIO dgram special */
131 #define BIO_CTRL_DGRAM_SET_CONNECTED 32 /* allow for an externally
132 * connected socket to be
133 * passed in */
134 #define BIO_CTRL_DGRAM_SET_RECV_TIMEOUT 33 /* setsockopt, essentially */
135 #define BIO_CTRL_DGRAM_GET_RECV_TIMEOUT 34 /* getsockopt, essentially */
136 #define BIO_CTRL_DGRAM_SET_SEND_TIMEOUT 35 /* setsockopt, essentially */
137 #define BIO_CTRL_DGRAM_GET_SEND_TIMEOUT 36 /* getsockopt, essentially */
138
139 #define BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP 37 /* flag whether the last */
140 #define BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP 38 /* I/O operation tiemd out */
141
142 /* #ifdef IP_MTU_DISCOVER */
143 #define BIO_CTRL_DGRAM_MTU_DISCOVER 39 /* set DF bit on egress packets */
144 /* #endif */
145
146 #define BIO_CTRL_DGRAM_QUERY_MTU 40 /* as kernel for current MTU */
147 #define BIO_CTRL_DGRAM_GET_MTU 41 /* get cached value for MTU */
148 #define BIO_CTRL_DGRAM_SET_MTU 42 /* set cached value for
149 * MTU. want to use this
150 * if asking the kernel
151 * fails */
152
153 #define BIO_CTRL_DGRAM_MTU_EXCEEDED 43 /* check whether the MTU
154 * was exceed in the
155 * previous write
156 * operation */
157
158 #define BIO_CTRL_DGRAM_SET_PEER 44 /* Destination for the data */
159
160
161 /* modifiers */
162 #define BIO_FP_READ 0x02
163 #define BIO_FP_WRITE 0x04
164 #define BIO_FP_APPEND 0x08
165 #define BIO_FP_TEXT 0x10
166
167 #define BIO_FLAGS_READ 0x01
168 #define BIO_FLAGS_WRITE 0x02
169 #define BIO_FLAGS_IO_SPECIAL 0x04
170 #define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL)
171 #define BIO_FLAGS_SHOULD_RETRY 0x08
172
173 /* Used in BIO_gethostbyname() */
174 #define BIO_GHBN_CTRL_HITS 1
175 #define BIO_GHBN_CTRL_MISSES 2
176 #define BIO_GHBN_CTRL_CACHE_SIZE 3
177 #define BIO_GHBN_CTRL_GET_ENTRY 4
178 #define BIO_GHBN_CTRL_FLUSH 5
179
180 /* Mostly used in the SSL BIO */
181 /* Not used anymore
182 * #define BIO_FLAGS_PROTOCOL_DELAYED_READ 0x10
183 * #define BIO_FLAGS_PROTOCOL_DELAYED_WRITE 0x20
184 * #define BIO_FLAGS_PROTOCOL_STARTUP 0x40
185 */
186
187 #define BIO_FLAGS_BASE64_NO_NL 0x100
188
189 /* This is used with memory BIOs: it means we shouldn't free up or change the
190 * data in any way.
191 */
192 #define BIO_FLAGS_MEM_RDONLY 0x200
193
194 #define BIO_set_flags(b,f) ((b)->flags|=(f))
195 #define BIO_get_flags(b) ((b)->flags)
196 #define BIO_set_retry_special(b) \
197 ((b)->flags|=(BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
198 #define BIO_set_retry_read(b) \
199 ((b)->flags|=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
200 #define BIO_set_retry_write(b) \
201 ((b)->flags|=(BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))
202
203 /* These are normally used internally in BIOs */
204 #define BIO_clear_flags(b,f) ((b)->flags&= ~(f))
205 #define BIO_clear_retry_flags(b) \
206 ((b)->flags&= ~(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
207 #define BIO_get_retry_flags(b) \
208 ((b)->flags&(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
209
210 /* These should be used by the application to tell why we should retry */
211 #define BIO_should_read(a) ((a)->flags & BIO_FLAGS_READ)
212 #define BIO_should_write(a) ((a)->flags & BIO_FLAGS_WRITE)
213 #define BIO_should_io_special(a) ((a)->flags & BIO_FLAGS_IO_SPECIAL)
214 #define BIO_retry_type(a) ((a)->flags & BIO_FLAGS_RWS)
215 #define BIO_should_retry(a) ((a)->flags & BIO_FLAGS_SHOULD_RETRY)
216
217 /* The next three are used in conjunction with the
218 * BIO_should_io_special() condition. After this returns true,
219 * BIO *BIO_get_retry_BIO(BIO *bio, int *reason); will walk the BIO
220 * stack and return the 'reason' for the special and the offending BIO.
221 * Given a BIO, BIO_get_retry_reason(bio) will return the code. */
222 /* Returned from the SSL bio when the certificate retrieval code had an error */
223 #define BIO_RR_SSL_X509_LOOKUP 0x01
224 /* Returned from the connect BIO when a connect would have blocked */
225 #define BIO_RR_CONNECT 0x02
226 /* Returned from the accept BIO when an accept would have blocked */
227 #define BIO_RR_ACCEPT 0x03
228
229 /* These are passed by the BIO callback */
230 #define BIO_CB_FREE 0x01
231 #define BIO_CB_READ 0x02
232 #define BIO_CB_WRITE 0x03
233 #define BIO_CB_PUTS 0x04
234 #define BIO_CB_GETS 0x05
235 #define BIO_CB_CTRL 0x06
236
237 /* The callback is called before and after the underling operation,
238 * The BIO_CB_RETURN flag indicates if it is after the call */
239 #define BIO_CB_RETURN 0x80
240 #define BIO_CB_return(a) ((a)|BIO_CB_RETURN))
241 #define BIO_cb_pre(a) (!((a)&BIO_CB_RETURN))
242 #define BIO_cb_post(a) ((a)&BIO_CB_RETURN)
243
244 #define BIO_set_callback(b,cb) ((b)->callback=(cb))
245 #define BIO_set_callback_arg(b,arg) ((b)->cb_arg=(char *)(arg))
246 #define BIO_get_callback_arg(b) ((b)->cb_arg)
247 #define BIO_get_callback(b) ((b)->callback)
248 #define BIO_method_name(b) ((b)->method->name)
249 #define BIO_method_type(b) ((b)->method->type)
250
251 typedef struct bio_st BIO;
252
253 typedef void bio_info_cb(struct bio_st *, int, const char *, int, long, long);
254
255 #ifndef OPENSSL_SYS_WIN16
256 typedef struct bio_method_st
257 {
258 int type;
259 const char *name;
260 int (*bwrite)(BIO *, const char *, int);
261 int (*bread)(BIO *, char *, int);
262 int (*bputs)(BIO *, const char *);
263 int (*bgets)(BIO *, char *, int);
264 long (*ctrl)(BIO *, int, long, void *);
265 int (*create)(BIO *);
266 int (*destroy)(BIO *);
267 long (*callback_ctrl)(BIO *, int, bio_info_cb *);
268 } BIO_METHOD;
269 #else
270 typedef struct bio_method_st
271 {
272 int type;
273 const char *name;
274 int (_far *bwrite)();
275 int (_far *bread)();
276 int (_far *bputs)();
277 int (_far *bgets)();
278 long (_far *ctrl)();
279 int (_far *create)();
280 int (_far *destroy)();
281 long (_far *callback_ctrl)();
282 } BIO_METHOD;
283 #endif
284
285 struct bio_st
286 {
287 BIO_METHOD *method;
288 /* bio, mode, argp, argi, argl, ret */
289 long (*callback)(struct bio_st *,int,const char *,int, long,long);
290 char *cb_arg; /* first argument for the callback */
291
292 int init;
293 int shutdown;
294 int flags; /* extra storage */
295 int retry_reason;
296 int num;
297 void *ptr;
298 struct bio_st *next_bio; /* used by filter BIOs */
299 struct bio_st *prev_bio; /* used by filter BIOs */
300 int references;
301 unsigned long num_read;
302 unsigned long num_write;
303
304 CRYPTO_EX_DATA ex_data;
305 };
306
307 DECLARE_STACK_OF(BIO)
308
309 typedef struct bio_f_buffer_ctx_struct
310 {
311 /* BIO *bio; */ /* this is now in the BIO struct */
312 int ibuf_size; /* how big is the input buffer */
313 int obuf_size; /* how big is the output buffer */
314
315 char *ibuf; /* the char array */
316 int ibuf_len; /* how many bytes are in it */
317 int ibuf_off; /* write/read offset */
318
319 char *obuf; /* the char array */
320 int obuf_len; /* how many bytes are in it */
321 int obuf_off; /* write/read offset */
322 } BIO_F_BUFFER_CTX;
323
324 /* connect BIO stuff */
325 #define BIO_CONN_S_BEFORE 1
326 #define BIO_CONN_S_GET_IP 2
327 #define BIO_CONN_S_GET_PORT 3
328 #define BIO_CONN_S_CREATE_SOCKET 4
329 #define BIO_CONN_S_CONNECT 5
330 #define BIO_CONN_S_OK 6
331 #define BIO_CONN_S_BLOCKED_CONNECT 7
332 #define BIO_CONN_S_NBIO 8
333 /*#define BIO_CONN_get_param_hostname BIO_ctrl */
334
335 #define BIO_C_SET_CONNECT 100
336 #define BIO_C_DO_STATE_MACHINE 101
337 #define BIO_C_SET_NBIO 102
338 #define BIO_C_SET_PROXY_PARAM 103
339 #define BIO_C_SET_FD 104
340 #define BIO_C_GET_FD 105
341 #define BIO_C_SET_FILE_PTR 106
342 #define BIO_C_GET_FILE_PTR 107
343 #define BIO_C_SET_FILENAME 108
344 #define BIO_C_SET_SSL 109
345 #define BIO_C_GET_SSL 110
346 #define BIO_C_SET_MD 111
347 #define BIO_C_GET_MD 112
348 #define BIO_C_GET_CIPHER_STATUS 113
349 #define BIO_C_SET_BUF_MEM 114
350 #define BIO_C_GET_BUF_MEM_PTR 115
351 #define BIO_C_GET_BUFF_NUM_LINES 116
352 #define BIO_C_SET_BUFF_SIZE 117
353 #define BIO_C_SET_ACCEPT 118
354 #define BIO_C_SSL_MODE 119
355 #define BIO_C_GET_MD_CTX 120
356 #define BIO_C_GET_PROXY_PARAM 121
357 #define BIO_C_SET_BUFF_READ_DATA 122 /* data to read first */
358 #define BIO_C_GET_CONNECT 123
359 #define BIO_C_GET_ACCEPT 124
360 #define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125
361 #define BIO_C_GET_SSL_NUM_RENEGOTIATES 126
362 #define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127
363 #define BIO_C_FILE_SEEK 128
364 #define BIO_C_GET_CIPHER_CTX 129
365 #define BIO_C_SET_BUF_MEM_EOF_RETURN 130/*return end of input value*/
366 #define BIO_C_SET_BIND_MODE 131
367 #define BIO_C_GET_BIND_MODE 132
368 #define BIO_C_FILE_TELL 133
369 #define BIO_C_GET_SOCKS 134
370 #define BIO_C_SET_SOCKS 135
371
372 #define BIO_C_SET_WRITE_BUF_SIZE 136/* for BIO_s_bio */
373 #define BIO_C_GET_WRITE_BUF_SIZE 137
374 #define BIO_C_MAKE_BIO_PAIR 138
375 #define BIO_C_DESTROY_BIO_PAIR 139
376 #define BIO_C_GET_WRITE_GUARANTEE 140
377 #define BIO_C_GET_READ_REQUEST 141
378 #define BIO_C_SHUTDOWN_WR 142
379 #define BIO_C_NREAD0 143
380 #define BIO_C_NREAD 144
381 #define BIO_C_NWRITE0 145
382 #define BIO_C_NWRITE 146
383 #define BIO_C_RESET_READ_REQUEST 147
384
385
386 #define BIO_set_app_data(s,arg) BIO_set_ex_data(s,0,arg)
387 #define BIO_get_app_data(s) BIO_get_ex_data(s,0)
388
389 /* BIO_s_connect() and BIO_s_socks4a_connect() */
390 #define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0,(char *)name)
391 #define BIO_set_conn_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,1,(char *)port)
392 #define BIO_set_conn_ip(b,ip) BIO_ctrl(b,BIO_C_SET_CONNECT,2,(char *)ip)
393 #define BIO_set_conn_int_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,3,(char *)port)
394 #define BIO_get_conn_hostname(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0)
395 #define BIO_get_conn_port(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1)
396 #define BIO_get_conn_ip(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2)
397 #define BIO_get_conn_int_port(b) BIO_int_ctrl(b,BIO_C_GET_CONNECT,3)
398
399
400 #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
401
402 /* BIO_s_accept_socket() */
403 #define BIO_set_accept_port(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0,(char *)name)
404 #define BIO_get_accept_port(b) BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0)
405 /* #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */
406 #define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,1,(n)?"a":NULL)
407 #define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(char *)bio)
408
409 #define BIO_BIND_NORMAL 0
410 #define BIO_BIND_REUSEADDR_IF_UNUSED 1
411 #define BIO_BIND_REUSEADDR 2
412 #define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL)
413 #define BIO_get_bind_mode(b,mode) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL)
414
415 #define BIO_do_connect(b) BIO_do_handshake(b)
416 #define BIO_do_accept(b) BIO_do_handshake(b)
417 #define BIO_do_handshake(b) BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL)
418
419 /* BIO_s_proxy_client() */
420 #define BIO_set_url(b,url) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,0,(char *)(url))
421 #define BIO_set_proxies(b,p) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,1,(char *)(p))
422 /* BIO_set_nbio(b,n) */
423 #define BIO_set_filter_bio(b,s) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,2,(char *)(s))
424 /* BIO *BIO_get_filter_bio(BIO *bio); */
425 #define BIO_set_proxy_cb(b,cb) BIO_callback_ctrl(b,BIO_C_SET_PROXY_PARAM,3,(void *(*cb)()))
426 #define BIO_set_proxy_header(b,sk) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,4,(char *)sk)
427 #define BIO_set_no_connect_return(b,bool) BIO_int_ctrl(b,BIO_C_SET_PROXY_PARAM,5,bool)
428
429 #define BIO_get_proxy_header(b,skp) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,0,(char *)skp)
430 #define BIO_get_proxies(b,pxy_p) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,1,(char *)(pxy_p))
431 #define BIO_get_url(b,url) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,2,(char *)(url))
432 #define BIO_get_no_connect_return(b) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,5,NULL)
433
434 #define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
435 #define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c)
436
437 #define BIO_set_fp(b,fp,c) BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)fp)
438 #define BIO_get_fp(b,fpp) BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)fpp)
439
440 #define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL)
441 #define BIO_tell(b) (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL)
442
443 /* name is cast to lose const, but might be better to route through a function
444 so we can do it safely */
445 #ifdef CONST_STRICT
446 /* If you are wondering why this isn't defined, its because CONST_STRICT is
447 * purely a compile-time kludge to allow const to be checked.
448 */
449 int BIO_read_filename(BIO *b,const char *name);
450 #else
451 #define BIO_read_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
452 BIO_CLOSE|BIO_FP_READ,(char *)name)
453 #endif
454 #define BIO_write_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
455 BIO_CLOSE|BIO_FP_WRITE,name)
456 #define BIO_append_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
457 BIO_CLOSE|BIO_FP_APPEND,name)
458 #define BIO_rw_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
459 BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
460
461 /* WARNING WARNING, this ups the reference count on the read bio of the
462 * SSL structure. This is because the ssl read BIO is now pointed to by
463 * the next_bio field in the bio. So when you free the BIO, make sure
464 * you are doing a BIO_free_all() to catch the underlying BIO. */
465 #define BIO_set_ssl(b,ssl,c) BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)ssl)
466 #define BIO_get_ssl(b,sslp) BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)sslp)
467 #define BIO_set_ssl_mode(b,client) BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL)
468 #define BIO_set_ssl_renegotiate_bytes(b,num) \
469 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL);
470 #define BIO_get_num_renegotiates(b) \
471 BIO_ctrl(b,BIO_C_GET_SSL_NUM_RENEGOTIATES,0,NULL);
472 #define BIO_set_ssl_renegotiate_timeout(b,seconds) \
473 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL);
474
475 /* defined in evp.h */
476 /* #define BIO_set_md(b,md) BIO_ctrl(b,BIO_C_SET_MD,1,(char *)md) */
477
478 #define BIO_get_mem_data(b,pp) BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)pp)
479 #define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)bm)
480 #define BIO_get_mem_ptr(b,pp) BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0,(char *)pp)
481 #define BIO_set_mem_eof_return(b,v) \
482 BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL)
483
484 /* For the BIO_f_buffer() type */
485 #define BIO_get_buffer_num_lines(b) BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL)
486 #define BIO_set_buffer_size(b,size) BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL)
487 #define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0)
488 #define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1)
489 #define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf)
490
491 /* Don't use the next one unless you know what you are doing :-) */
492 #define BIO_dup_state(b,ret) BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret))
493
494 #define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
495 #define BIO_eof(b) (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL)
496 #define BIO_set_close(b,c) (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL)
497 #define BIO_get_close(b) (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL)
498 #define BIO_pending(b) (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL)
499 #define BIO_wpending(b) (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL)
500 /* ...pending macros have inappropriate return type */
501 size_t BIO_ctrl_pending(BIO *b);
502 size_t BIO_ctrl_wpending(BIO *b);
503 #define BIO_flush(b) (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL)
504 #define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0, \
505 cbp)
506 #define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,cb)
507
508 /* For the BIO_f_buffer() type */
509 #define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL)
510
511 /* For BIO_s_bio() */
512 #define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
513 #define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
514 #define BIO_make_bio_pair(b1,b2) (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
515 #define BIO_destroy_bio_pair(b) (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
516 #define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 0, NULL)
517 /* macros with inappropriate type -- but ...pending macros use int too: */
518 #define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
519 #define BIO_get_read_request(b) (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
520 size_t BIO_ctrl_get_write_guarantee(BIO *b);
521 size_t BIO_ctrl_get_read_request(BIO *b);
522 int BIO_ctrl_reset_read_request(BIO *b);
523
524 /* ctrl macros for dgram */
525 #define BIO_ctrl_dgram_connect(b,peer) \
526 (int)BIO_ctrl(b,BIO_CTRL_DGRAM_CONNECT,0, (char *)peer)
527 #define BIO_ctrl_set_connected(b, state, peer) \
528 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_CONNECTED, state, (char *)peer)
529 #define BIO_dgram_recv_timedout(b) \
530 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP, 0, NULL)
531 #define BIO_dgram_send_timedout(b) \
532 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP, 0, NULL)
533 #define BIO_dgram_set_peer(b,peer) \
534 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, (char *)peer)
535
536 /* These two aren't currently implemented */
537 /* int BIO_get_ex_num(BIO *bio); */
538 /* void BIO_set_ex_free_func(BIO *bio,int idx,void (*cb)()); */
539 int BIO_set_ex_data(BIO *bio,int idx,void *data);
540 void *BIO_get_ex_data(BIO *bio,int idx);
541 int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
542 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
543 unsigned long BIO_number_read(BIO *bio);
544 unsigned long BIO_number_written(BIO *bio);
545
546 # ifndef OPENSSL_NO_FP_API
547 # if defined(OPENSSL_SYS_WIN16) && defined(_WINDLL)
548 BIO_METHOD *BIO_s_file_internal(void);
549 BIO *BIO_new_file_internal(char *filename, char *mode);
550 BIO *BIO_new_fp_internal(FILE *stream, int close_flag);
551 # define BIO_s_file BIO_s_file_internal
552 # define BIO_new_file BIO_new_file_internal
553 # define BIO_new_fp BIO_new_fp_internal
554 # else /* FP_API */
555 BIO_METHOD *BIO_s_file(void );
556 BIO *BIO_new_file(const char *filename, const char *mode);
557 BIO *BIO_new_fp(FILE *stream, int close_flag);
558 # define BIO_s_file_internal BIO_s_file
559 # define BIO_new_file_internal BIO_new_file
560 # define BIO_new_fp_internal BIO_s_file
561 # endif /* FP_API */
562 # endif
563 BIO * BIO_new(BIO_METHOD *type);
564 int BIO_set(BIO *a,BIO_METHOD *type);
565 int BIO_free(BIO *a);
566 void BIO_vfree(BIO *a);
567 int BIO_read(BIO *b, void *data, int len);
568 int BIO_gets(BIO *bp,char *buf, int size);
569 int BIO_write(BIO *b, const void *data, int len);
570 int BIO_puts(BIO *bp,const char *buf);
571 int BIO_indent(BIO *b,int indent,int max);
572 long BIO_ctrl(BIO *bp,int cmd,long larg,void *parg);
573 long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)(struct bio_st *, int, const char *, int, long, long));
574 char * BIO_ptr_ctrl(BIO *bp,int cmd,long larg);
575 long BIO_int_ctrl(BIO *bp,int cmd,long larg,int iarg);
576 BIO * BIO_push(BIO *b,BIO *append);
577 BIO * BIO_pop(BIO *b);
578 void BIO_free_all(BIO *a);
579 BIO * BIO_find_type(BIO *b,int bio_type);
580 BIO * BIO_next(BIO *b);
581 BIO * BIO_get_retry_BIO(BIO *bio, int *reason);
582 int BIO_get_retry_reason(BIO *bio);
583 BIO * BIO_dup_chain(BIO *in);
584
585 int BIO_nread0(BIO *bio, char **buf);
586 int BIO_nread(BIO *bio, char **buf, int num);
587 int BIO_nwrite0(BIO *bio, char **buf);
588 int BIO_nwrite(BIO *bio, char **buf, int num);
589
590 #ifndef OPENSSL_SYS_WIN16
591 long BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
592 long argl,long ret);
593 #else
594 long _far _loadds BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
595 long argl,long ret);
596 #endif
597
598 BIO_METHOD *BIO_s_mem(void);
599 BIO *BIO_new_mem_buf(void *buf, int len);
600 BIO_METHOD *BIO_s_socket(void);
601 BIO_METHOD *BIO_s_connect(void);
602 BIO_METHOD *BIO_s_accept(void);
603 BIO_METHOD *BIO_s_fd(void);
604 #ifndef OPENSSL_SYS_OS2
605 BIO_METHOD *BIO_s_log(void);
606 #endif
607 BIO_METHOD *BIO_s_bio(void);
608 BIO_METHOD *BIO_s_null(void);
609 BIO_METHOD *BIO_f_null(void);
610 BIO_METHOD *BIO_f_buffer(void);
611 #ifdef OPENSSL_SYS_VMS
612 BIO_METHOD *BIO_f_linebuffer(void);
613 #endif
614 BIO_METHOD *BIO_f_nbio_test(void);
615 #ifndef OPENSSL_NO_DGRAM
616 BIO_METHOD *BIO_s_datagram(void);
617 #endif
618
619 /* BIO_METHOD *BIO_f_ber(void); */
620
621 int BIO_sock_should_retry(int i);
622 int BIO_sock_non_fatal_error(int error);
623 int BIO_dgram_non_fatal_error(int error);
624
625 int BIO_fd_should_retry(int i);
626 int BIO_fd_non_fatal_error(int error);
627 int BIO_dump_cb(int (*cb)(const void *data, size_t len, void *u),
628 void *u, const char *s, int len);
629 int BIO_dump_indent_cb(int (*cb)(const void *data, size_t len, void *u),
630 void *u, const char *s, int len, int indent);
631 int BIO_dump(BIO *b,const char *bytes,int len);
632 int BIO_dump_indent(BIO *b,const char *bytes,int len,int indent);
633 #ifndef OPENSSL_NO_FP_API
634 int BIO_dump_fp(FILE *fp, const char *s, int len);
635 int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent);
636 #endif
637 struct hostent *BIO_gethostbyname(const char *name);
638 /* We might want a thread-safe interface too:
639 * struct hostent *BIO_gethostbyname_r(const char *name,
640 * struct hostent *result, void *buffer, size_t buflen);
641 * or something similar (caller allocates a struct hostent,
642 * pointed to by "result", and additional buffer space for the various
643 * substructures; if the buffer does not suffice, NULL is returned
644 * and an appropriate error code is set).
645 */
646 int BIO_sock_error(int sock);
647 int BIO_socket_ioctl(int fd, long type, void *arg);
648 int BIO_socket_nbio(int fd,int mode);
649 int BIO_get_port(const char *str, unsigned short *port_ptr);
650 int BIO_get_host_ip(const char *str, unsigned char *ip);
651 int BIO_get_accept_socket(char *host_port,int mode);
652 int BIO_accept(int sock,char **ip_port);
653 int BIO_sock_init(void );
654 void BIO_sock_cleanup(void);
655 int BIO_set_tcp_ndelay(int sock,int turn_on);
656
657 BIO *BIO_new_socket(int sock, int close_flag);
658 BIO *BIO_new_dgram(int fd, int close_flag);
659 BIO *BIO_new_fd(int fd, int close_flag);
660 BIO *BIO_new_connect(char *host_port);
661 BIO *BIO_new_accept(char *host_port);
662
663 int BIO_new_bio_pair(BIO **bio1, size_t writebuf1,
664 BIO **bio2, size_t writebuf2);
665 /* If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints.
666 * Otherwise returns 0 and sets *bio1 and *bio2 to NULL.
667 * Size 0 uses default value.
668 */
669
670 void BIO_copy_next_retry(BIO *b);
671
672 /*long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);*/
673
674 #ifndef __GNUC__
675 #define __attribute__(x)
676 #endif
677 int BIO_printf(BIO *bio, const char *format, ...)
678 __attribute__((__format__(__printf__,2,3)));
679 int BIO_vprintf(BIO *bio, const char *format, va_list args)
680 __attribute__((__format__(__printf__,2,0)));
681 int BIO_snprintf(char *buf, size_t n, const char *format, ...)
682 __attribute__((__format__(__printf__,3,4)));
683 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
684 __attribute__((__format__(__printf__,3,0)));
685
686 /* BEGIN ERROR CODES */
687 /* The following lines are auto generated by the script mkerr.pl. Any changes
688 * made after this point may be overwritten when the script is next run.
689 */
690 void ERR_load_BIO_strings(void);
691
692 /* Error codes for the BIO functions. */
693
694 /* Function codes. */
695 #define BIO_F_ACPT_STATE 100
696 #define BIO_F_BIO_ACCEPT 101
697 #define BIO_F_BIO_BER_GET_HEADER 102
698 #define BIO_F_BIO_CTRL 103
699 #define BIO_F_BIO_GETHOSTBYNAME 120
700 #define BIO_F_BIO_GETS 104
701 #define BIO_F_BIO_GET_ACCEPT_SOCKET 105
702 #define BIO_F_BIO_GET_HOST_IP 106
703 #define BIO_F_BIO_GET_PORT 107
704 #define BIO_F_BIO_MAKE_PAIR 121
705 #define BIO_F_BIO_NEW 108
706 #define BIO_F_BIO_NEW_FILE 109
707 #define BIO_F_BIO_NEW_MEM_BUF 126
708 #define BIO_F_BIO_NREAD 123
709 #define BIO_F_BIO_NREAD0 124
710 #define BIO_F_BIO_NWRITE 125
711 #define BIO_F_BIO_NWRITE0 122
712 #define BIO_F_BIO_PUTS 110
713 #define BIO_F_BIO_READ 111
714 #define BIO_F_BIO_SOCK_INIT 112
715 #define BIO_F_BIO_WRITE 113
716 #define BIO_F_BUFFER_CTRL 114
717 #define BIO_F_CONN_CTRL 127
718 #define BIO_F_CONN_STATE 115
719 #define BIO_F_FILE_CTRL 116
720 #define BIO_F_FILE_READ 130
721 #define BIO_F_LINEBUFFER_CTRL 129
722 #define BIO_F_MEM_READ 128
723 #define BIO_F_MEM_WRITE 117
724 #define BIO_F_SSL_NEW 118
725 #define BIO_F_WSASTARTUP 119
726
727 /* Reason codes. */
728 #define BIO_R_ACCEPT_ERROR 100
729 #define BIO_R_BAD_FOPEN_MODE 101
730 #define BIO_R_BAD_HOSTNAME_LOOKUP 102
731 #define BIO_R_BROKEN_PIPE 124
732 #define BIO_R_CONNECT_ERROR 103
733 #define BIO_R_EOF_ON_MEMORY_BIO 127
734 #define BIO_R_ERROR_SETTING_NBIO 104
735 #define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET 105
736 #define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET 106
737 #define BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET 107
738 #define BIO_R_INVALID_ARGUMENT 125
739 #define BIO_R_INVALID_IP_ADDRESS 108
740 #define BIO_R_IN_USE 123
741 #define BIO_R_KEEPALIVE 109
742 #define BIO_R_NBIO_CONNECT_ERROR 110
743 #define BIO_R_NO_ACCEPT_PORT_SPECIFIED 111
744 #define BIO_R_NO_HOSTNAME_SPECIFIED 112
745 #define BIO_R_NO_PORT_DEFINED 113
746 #define BIO_R_NO_PORT_SPECIFIED 114
747 #define BIO_R_NO_SUCH_FILE 128
748 #define BIO_R_NULL_PARAMETER 115
749 #define BIO_R_TAG_MISMATCH 116
750 #define BIO_R_UNABLE_TO_BIND_SOCKET 117
751 #define BIO_R_UNABLE_TO_CREATE_SOCKET 118
752 #define BIO_R_UNABLE_TO_LISTEN_SOCKET 119
753 #define BIO_R_UNINITIALIZED 120
754 #define BIO_R_UNSUPPORTED_METHOD 121
755 #define BIO_R_WRITE_TO_READ_ONLY_BIO 126
756 #define BIO_R_WSASTARTUP 122
757
758 #ifdef __cplusplus
759 }
760 #endif
761 #endif
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