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1/* $OpenBSD: bio.h,v 1.64 2024/05/19 07:12:50 jsg Exp $ */
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#if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__OpenBSD__)
62#define __bounded__(x, y, z)
63#endif
64#include <openssl/opensslconf.h>
65
66# include <stdio.h>
67#include <stdarg.h>
68
69#include <openssl/crypto.h>
70
71
72#ifdef __cplusplus
73extern "C" {
74#endif
75
76/* These are the 'types' of BIOs */
77#define BIO_TYPE_NONE 0
78#define BIO_TYPE_MEM (1|0x0400)
79#define BIO_TYPE_FILE (2|0x0400)
80
81#define BIO_TYPE_FD (4|0x0400|0x0100)
82#define BIO_TYPE_SOCKET (5|0x0400|0x0100)
83#define BIO_TYPE_NULL (6|0x0400)
84#define BIO_TYPE_SSL (7|0x0200)
85#define BIO_TYPE_MD (8|0x0200) /* passive filter */
86#define BIO_TYPE_BUFFER (9|0x0200) /* filter */
87#define BIO_TYPE_CIPHER (10|0x0200) /* filter */
88#define BIO_TYPE_BASE64 (11|0x0200) /* filter */
89#define BIO_TYPE_CONNECT (12|0x0400|0x0100) /* socket - connect */
90#define BIO_TYPE_ACCEPT (13|0x0400|0x0100) /* socket for accept */
91#define BIO_TYPE_PROXY_CLIENT (14|0x0200) /* client proxy BIO */
92#define BIO_TYPE_PROXY_SERVER (15|0x0200) /* server proxy BIO */
93#define BIO_TYPE_NBIO_TEST (16|0x0200) /* server proxy BIO */
94#define BIO_TYPE_NULL_FILTER (17|0x0200)
95#define BIO_TYPE_BER (18|0x0200) /* BER -> bin filter */
96#define BIO_TYPE_BIO (19|0x0400) /* (half a) BIO pair */
97#define BIO_TYPE_LINEBUFFER (20|0x0200) /* filter */
98#define BIO_TYPE_DGRAM (21|0x0400|0x0100)
99#define BIO_TYPE_ASN1 (22|0x0200) /* filter */
100#define BIO_TYPE_COMP (23|0x0200) /* filter */
101
102#define BIO_TYPE_DESCRIPTOR 0x0100 /* socket, fd, connect or accept */
103#define BIO_TYPE_FILTER 0x0200
104#define BIO_TYPE_SOURCE_SINK 0x0400
105
106/*
107 * BIO_TYPE_START is the first user-allocated BIO type. No pre-defined type,
108 * flag bits aside, may exceed this value.
109 */
110#define BIO_TYPE_START 128
111
112/* BIO_FILENAME_READ|BIO_CLOSE to open or close on free.
113 * BIO_set_fp(in,stdin,BIO_NOCLOSE); */
114#define BIO_NOCLOSE 0x00
115#define BIO_CLOSE 0x01
116
117/* These are used in the following macros and are passed to
118 * BIO_ctrl() */
119#define BIO_CTRL_RESET 1 /* opt - rewind/zero etc */
120#define BIO_CTRL_EOF 2 /* opt - are we at the eof */
121#define BIO_CTRL_INFO 3 /* opt - extra tit-bits */
122#define BIO_CTRL_SET 4 /* man - set the 'IO' type */
123#define BIO_CTRL_GET 5 /* man - get the 'IO' type */
124#define BIO_CTRL_PUSH 6 /* opt - internal, used to signify change */
125#define BIO_CTRL_POP 7 /* opt - internal, used to signify change */
126#define BIO_CTRL_GET_CLOSE 8 /* man - set the 'close' on free */
127#define BIO_CTRL_SET_CLOSE 9 /* man - set the 'close' on free */
128#define BIO_CTRL_PENDING 10 /* opt - is their more data buffered */
129#define BIO_CTRL_FLUSH 11 /* opt - 'flush' buffered output */
130#define BIO_CTRL_DUP 12 /* man - extra stuff for 'duped' BIO */
131#define BIO_CTRL_WPENDING 13 /* opt - number of bytes still to write */
132/* callback is int cb(BIO *bio,state,ret); */
133#define BIO_CTRL_SET_CALLBACK 14 /* opt - set callback function */
134#define BIO_CTRL_GET_CALLBACK 15 /* opt - set callback function */
135
136#define BIO_CTRL_SET_FILENAME 30 /* BIO_s_file special */
137
138/* dgram BIO stuff */
139#define BIO_CTRL_DGRAM_CONNECT 31 /* BIO dgram special */
140#define BIO_CTRL_DGRAM_SET_CONNECTED 32 /* allow for an externally
141 * connected socket to be
142 * passed in */
143#define BIO_CTRL_DGRAM_SET_RECV_TIMEOUT 33 /* setsockopt, essentially */
144#define BIO_CTRL_DGRAM_GET_RECV_TIMEOUT 34 /* getsockopt, essentially */
145#define BIO_CTRL_DGRAM_SET_SEND_TIMEOUT 35 /* setsockopt, essentially */
146#define BIO_CTRL_DGRAM_GET_SEND_TIMEOUT 36 /* getsockopt, essentially */
147
148#define BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP 37 /* flag whether the last */
149#define BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP 38 /* I/O operation tiemd out */
150
151/* #ifdef IP_MTU_DISCOVER */
152#define BIO_CTRL_DGRAM_MTU_DISCOVER 39 /* set DF bit on egress packets */
153/* #endif */
154
155#define BIO_CTRL_DGRAM_QUERY_MTU 40 /* as kernel for current MTU */
156#define BIO_CTRL_DGRAM_GET_FALLBACK_MTU 47
157#define BIO_CTRL_DGRAM_GET_MTU 41 /* get cached value for MTU */
158#define BIO_CTRL_DGRAM_SET_MTU 42 /* set cached value for
159 * MTU. want to use this
160 * if asking the kernel
161 * fails */
162
163#define BIO_CTRL_DGRAM_MTU_EXCEEDED 43 /* check whether the MTU
164 * was exceed in the
165 * previous write
166 * operation */
167
168#define BIO_CTRL_DGRAM_GET_PEER 46
169#define BIO_CTRL_DGRAM_SET_PEER 44 /* Destination for the data */
170
171#define BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT 45 /* Next DTLS handshake timeout to
172 * adjust socket timeouts */
173
174
175/* modifiers */
176#define BIO_FP_READ 0x02
177#define BIO_FP_WRITE 0x04
178#define BIO_FP_APPEND 0x08
179#define BIO_FP_TEXT 0x10
180
181#define BIO_FLAGS_READ 0x01
182#define BIO_FLAGS_WRITE 0x02
183#define BIO_FLAGS_IO_SPECIAL 0x04
184#define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL)
185#define BIO_FLAGS_SHOULD_RETRY 0x08
186
187/* Used in BIO_gethostbyname() */
188#define BIO_GHBN_CTRL_HITS 1
189#define BIO_GHBN_CTRL_MISSES 2
190#define BIO_GHBN_CTRL_CACHE_SIZE 3
191#define BIO_GHBN_CTRL_GET_ENTRY 4
192#define BIO_GHBN_CTRL_FLUSH 5
193
194/* Mostly used in the SSL BIO */
195/* Not used anymore
196 * #define BIO_FLAGS_PROTOCOL_DELAYED_READ 0x10
197 * #define BIO_FLAGS_PROTOCOL_DELAYED_WRITE 0x20
198 * #define BIO_FLAGS_PROTOCOL_STARTUP 0x40
199 */
200
201#define BIO_FLAGS_BASE64_NO_NL 0x100
202
203/* This is used with memory BIOs: it means we shouldn't free up or change the
204 * data in any way.
205 */
206#define BIO_FLAGS_MEM_RDONLY 0x200
207
208void BIO_set_flags(BIO *b, int flags);
209int BIO_test_flags(const BIO *b, int flags);
210void BIO_clear_flags(BIO *b, int flags);
211
212#define BIO_get_flags(b) BIO_test_flags(b, ~(0x0))
213#define BIO_set_retry_special(b) \
214 BIO_set_flags(b, (BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
215#define BIO_set_retry_read(b) \
216 BIO_set_flags(b, (BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
217#define BIO_set_retry_write(b) \
218 BIO_set_flags(b, (BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))
219
220/* These are normally used internally in BIOs */
221#define BIO_clear_retry_flags(b) \
222 BIO_clear_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
223#define BIO_get_retry_flags(b) \
224 BIO_test_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
225
226/* These should be used by the application to tell why we should retry */
227#define BIO_should_read(a) BIO_test_flags(a, BIO_FLAGS_READ)
228#define BIO_should_write(a) BIO_test_flags(a, BIO_FLAGS_WRITE)
229#define BIO_should_io_special(a) BIO_test_flags(a, BIO_FLAGS_IO_SPECIAL)
230#define BIO_retry_type(a) BIO_test_flags(a, BIO_FLAGS_RWS)
231#define BIO_should_retry(a) BIO_test_flags(a, BIO_FLAGS_SHOULD_RETRY)
232
233/* The next three are used in conjunction with the
234 * BIO_should_io_special() condition. After this returns true,
235 * BIO *BIO_get_retry_BIO(BIO *bio, int *reason); will walk the BIO
236 * stack and return the 'reason' for the special and the offending BIO.
237 * Given a BIO, BIO_get_retry_reason(bio) will return the code. */
238/* Returned from the SSL bio when the certificate retrieval code had an error */
239#define BIO_RR_SSL_X509_LOOKUP 0x01
240/* Returned from the connect BIO when a connect would have blocked */
241#define BIO_RR_CONNECT 0x02
242/* Returned from the accept BIO when an accept would have blocked */
243#define BIO_RR_ACCEPT 0x03
244
245/* These are passed by the BIO callback */
246#define BIO_CB_FREE 0x01
247#define BIO_CB_READ 0x02
248#define BIO_CB_WRITE 0x03
249#define BIO_CB_PUTS 0x04
250#define BIO_CB_GETS 0x05
251#define BIO_CB_CTRL 0x06
252
253/*
254 * The callback is called before and after the underling operation,
255 * the BIO_CB_RETURN flag indicates if it is after the call.
256 */
257#define BIO_CB_RETURN 0x80
258#define BIO_CB_return(a) ((a)|BIO_CB_RETURN))
259#define BIO_cb_pre(a) (!((a)&BIO_CB_RETURN))
260#define BIO_cb_post(a) ((a)&BIO_CB_RETURN)
261
262typedef long (*BIO_callback_fn)(BIO *b, int oper, const char *argp, int argi,
263 long argl, long ret);
264typedef long (*BIO_callback_fn_ex)(BIO *b, int oper, const char *argp,
265 size_t len, int argi, long argl, int ret, size_t *processed);
266
267BIO_callback_fn BIO_get_callback(const BIO *b);
268void BIO_set_callback(BIO *b, BIO_callback_fn callback);
269
270BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b);
271void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex callback);
272
273char *BIO_get_callback_arg(const BIO *b);
274void BIO_set_callback_arg(BIO *b, char *arg);
275
276const char *BIO_method_name(const BIO *b);
277int BIO_method_type(const BIO *b);
278
279typedef int BIO_info_cb(BIO *, int, int);
280/* Compatibility with OpenSSL's backward compatibility. */
281typedef BIO_info_cb bio_info_cb;
282
283typedef struct bio_method_st BIO_METHOD;
284
285DECLARE_STACK_OF(BIO)
286
287/* Prefix and suffix callback in ASN1 BIO */
288typedef int asn1_ps_func(BIO *b, unsigned char **pbuf, int *plen, void *parg);
289
290/* BIO_METHOD accessors */
291BIO_METHOD *BIO_meth_new(int type, const char *name);
292void BIO_meth_free(BIO_METHOD *biom);
293int (*BIO_meth_get_write(const BIO_METHOD *biom))(BIO *, const char *, int);
294int BIO_meth_set_write(BIO_METHOD *biom,
295 int (*write)(BIO *, const char *, int));
296int (*BIO_meth_get_read(const BIO_METHOD *biom))(BIO *, char *, int);
297int BIO_meth_set_read(BIO_METHOD *biom, int (*read)(BIO *, char *, int));
298int (*BIO_meth_get_puts(const BIO_METHOD *biom))(BIO *, const char *);
299int BIO_meth_set_puts(BIO_METHOD *biom, int (*puts)(BIO *, const char *));
300int (*BIO_meth_get_gets(const BIO_METHOD *biom))(BIO *, char *, int);
301int BIO_meth_set_gets(BIO_METHOD *biom, int (*gets)(BIO *, char *, int));
302long (*BIO_meth_get_ctrl(const BIO_METHOD *biom))(BIO *, int, long, void *);
303int BIO_meth_set_ctrl(BIO_METHOD *biom, long (*ctrl)(BIO *, int, long, void *));
304int (*BIO_meth_get_create(const BIO_METHOD *biom))(BIO *);
305int BIO_meth_set_create(BIO_METHOD *biom, int (*create)(BIO *));
306int (*BIO_meth_get_destroy(const BIO_METHOD *biom))(BIO *);
307int BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy)(BIO *));
308long (*BIO_meth_get_callback_ctrl(const BIO_METHOD *biom))(BIO *, int, BIO_info_cb *);
309int BIO_meth_set_callback_ctrl(BIO_METHOD *biom,
310 long (*callback_ctrl)(BIO *, int, BIO_info_cb *));
311
312/* connect BIO stuff */
313#define BIO_CONN_S_BEFORE 1
314#define BIO_CONN_S_GET_IP 2
315#define BIO_CONN_S_GET_PORT 3
316#define BIO_CONN_S_CREATE_SOCKET 4
317#define BIO_CONN_S_CONNECT 5
318#define BIO_CONN_S_OK 6
319#define BIO_CONN_S_BLOCKED_CONNECT 7
320#define BIO_CONN_S_NBIO 8
321/*#define BIO_CONN_get_param_hostname BIO_ctrl */
322
323#define BIO_C_SET_CONNECT 100
324#define BIO_C_DO_STATE_MACHINE 101
325#define BIO_C_SET_NBIO 102
326#define BIO_C_SET_PROXY_PARAM 103
327#define BIO_C_SET_FD 104
328#define BIO_C_GET_FD 105
329#define BIO_C_SET_FILE_PTR 106
330#define BIO_C_GET_FILE_PTR 107
331#define BIO_C_SET_FILENAME 108
332#define BIO_C_SET_SSL 109
333#define BIO_C_GET_SSL 110
334#define BIO_C_SET_MD 111
335#define BIO_C_GET_MD 112
336#define BIO_C_GET_CIPHER_STATUS 113
337#define BIO_C_SET_BUF_MEM 114
338#define BIO_C_GET_BUF_MEM_PTR 115
339#define BIO_C_GET_BUFF_NUM_LINES 116
340#define BIO_C_SET_BUFF_SIZE 117
341#define BIO_C_SET_ACCEPT 118
342#define BIO_C_SSL_MODE 119
343#define BIO_C_GET_MD_CTX 120
344#define BIO_C_GET_PROXY_PARAM 121
345#define BIO_C_SET_BUFF_READ_DATA 122 /* data to read first */
346#define BIO_C_GET_CONNECT 123
347#define BIO_C_GET_ACCEPT 124
348#define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125
349#define BIO_C_GET_SSL_NUM_RENEGOTIATES 126
350#define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127
351#define BIO_C_FILE_SEEK 128
352#define BIO_C_GET_CIPHER_CTX 129
353#define BIO_C_SET_BUF_MEM_EOF_RETURN 130/*return end of input value*/
354#define BIO_C_SET_BIND_MODE 131
355#define BIO_C_GET_BIND_MODE 132
356#define BIO_C_FILE_TELL 133
357#define BIO_C_GET_SOCKS 134
358#define BIO_C_SET_SOCKS 135
359
360#define BIO_C_SET_WRITE_BUF_SIZE 136/* for BIO_s_bio */
361#define BIO_C_GET_WRITE_BUF_SIZE 137
362#define BIO_C_MAKE_BIO_PAIR 138
363#define BIO_C_DESTROY_BIO_PAIR 139
364#define BIO_C_GET_WRITE_GUARANTEE 140
365#define BIO_C_GET_READ_REQUEST 141
366#define BIO_C_SHUTDOWN_WR 142
367#define BIO_C_RESET_READ_REQUEST 147
368#define BIO_C_SET_MD_CTX 148
369
370#define BIO_C_SET_EX_ARG 153
371#define BIO_C_GET_EX_ARG 154
372
373#define BIO_set_app_data(s,arg) BIO_set_ex_data(s,0,arg)
374#define BIO_get_app_data(s) BIO_get_ex_data(s,0)
375
376/* BIO_s_connect() and BIO_s_socks4a_connect() */
377#define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0,(char *)name)
378#define BIO_set_conn_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,1,(char *)port)
379#define BIO_set_conn_ip(b,ip) BIO_ctrl(b,BIO_C_SET_CONNECT,2,(char *)ip)
380#define BIO_set_conn_int_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,3,(char *)port)
381#define BIO_get_conn_hostname(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0)
382#define BIO_get_conn_port(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1)
383#define BIO_get_conn_ip(b) BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2)
384#define BIO_get_conn_int_port(b) BIO_int_ctrl(b,BIO_C_GET_CONNECT,3,0)
385
386
387#define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
388
389/* BIO_s_accept_socket() */
390#define BIO_set_accept_port(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0,(char *)name)
391#define BIO_get_accept_port(b) BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0)
392/* #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */
393#define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,1,(n)?(void *)"a":NULL)
394#define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(char *)bio)
395
396#define BIO_BIND_NORMAL 0
397#define BIO_BIND_REUSEADDR_IF_UNUSED 1
398#define BIO_BIND_REUSEADDR 2
399#define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL)
400#define BIO_get_bind_mode(b,mode) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL)
401
402#define BIO_do_connect(b) BIO_do_handshake(b)
403#define BIO_do_accept(b) BIO_do_handshake(b)
404#define BIO_do_handshake(b) BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL)
405
406/* BIO_s_proxy_client() */
407#define BIO_set_url(b,url) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,0,(char *)(url))
408#define BIO_set_proxies(b,p) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,1,(char *)(p))
409/* BIO_set_nbio(b,n) */
410#define BIO_set_filter_bio(b,s) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,2,(char *)(s))
411/* BIO *BIO_get_filter_bio(BIO *bio); */
412#define BIO_set_proxy_cb(b,cb) BIO_callback_ctrl(b,BIO_C_SET_PROXY_PARAM,3,(void *(*cb)()))
413#define BIO_set_proxy_header(b,sk) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,4,(char *)sk)
414#define BIO_set_no_connect_return(b,bool) BIO_int_ctrl(b,BIO_C_SET_PROXY_PARAM,5,bool)
415
416#define BIO_get_proxy_header(b,skp) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,0,(char *)skp)
417#define BIO_get_proxies(b,pxy_p) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,1,(char *)(pxy_p))
418#define BIO_get_url(b,url) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,2,(char *)(url))
419#define BIO_get_no_connect_return(b) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,5,NULL)
420
421#define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
422#define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c)
423
424#define BIO_set_fp(b,fp,c) BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)fp)
425#define BIO_get_fp(b,fpp) BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)fpp)
426
427#define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL)
428#define BIO_tell(b) (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL)
429
430/* name is cast to lose const, but might be better to route through a function
431 so we can do it safely */
432#define BIO_read_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
433 BIO_CLOSE|BIO_FP_READ,(char *)name)
434#define BIO_write_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
435 BIO_CLOSE|BIO_FP_WRITE,name)
436#define BIO_append_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
437 BIO_CLOSE|BIO_FP_APPEND,name)
438#define BIO_rw_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
439 BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
440
441/* WARNING WARNING, this ups the reference count on the read bio of the
442 * SSL structure. This is because the ssl read BIO is now pointed to by
443 * the next_bio field in the bio. So when you free the BIO, make sure
444 * you are doing a BIO_free_all() to catch the underlying BIO. */
445#define BIO_set_ssl(b,ssl,c) BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)ssl)
446#define BIO_get_ssl(b,sslp) BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)sslp)
447#define BIO_set_ssl_mode(b,client) BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL)
448#define BIO_set_ssl_renegotiate_bytes(b,num) \
449 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL)
450#define BIO_get_num_renegotiates(b) \
451 BIO_ctrl(b,BIO_C_GET_SSL_NUM_RENEGOTIATES,0,NULL)
452#define BIO_set_ssl_renegotiate_timeout(b,seconds) \
453 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL)
454
455/* defined in evp.h */
456/* #define BIO_set_md(b,md) BIO_ctrl(b,BIO_C_SET_MD,1,(char *)md) */
457
458#define BIO_get_mem_data(b,pp) BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)pp)
459#define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)bm)
460#define BIO_get_mem_ptr(b,pp) BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0,(char *)pp)
461#define BIO_set_mem_eof_return(b,v) \
462 BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL)
463
464/* For the BIO_f_buffer() type */
465#define BIO_get_buffer_num_lines(b) BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL)
466#define BIO_set_buffer_size(b,size) BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL)
467#define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0)
468#define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1)
469#define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf)
470
471/* Don't use the next one unless you know what you are doing :-) */
472#define BIO_dup_state(b,ret) BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret))
473
474#define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
475#define BIO_eof(b) (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL)
476#define BIO_set_close(b,c) (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL)
477#define BIO_get_close(b) (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL)
478#define BIO_pending(b) (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL)
479#define BIO_wpending(b) (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL)
480/* ...pending macros have inappropriate return type */
481size_t BIO_ctrl_pending(BIO *b);
482size_t BIO_ctrl_wpending(BIO *b);
483#define BIO_flush(b) (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL)
484#define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0, \
485 cbp)
486#define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,cb)
487
488/* For the BIO_f_buffer() type */
489#define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL)
490
491/* For BIO_s_bio() */
492#define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
493#define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
494#define BIO_make_bio_pair(b1,b2) (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
495#define BIO_destroy_bio_pair(b) (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
496#define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 0, NULL)
497/* macros with inappropriate type -- but ...pending macros use int too: */
498#define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
499#define BIO_get_read_request(b) (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
500size_t BIO_ctrl_get_write_guarantee(BIO *b);
501size_t BIO_ctrl_get_read_request(BIO *b);
502int BIO_ctrl_reset_read_request(BIO *b);
503
504/* ctrl macros for dgram */
505#define BIO_ctrl_dgram_connect(b,peer) \
506 (int)BIO_ctrl(b,BIO_CTRL_DGRAM_CONNECT,0, (char *)peer)
507#define BIO_ctrl_set_connected(b, state, peer) \
508 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_CONNECTED, state, (char *)peer)
509#define BIO_dgram_recv_timedout(b) \
510 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP, 0, NULL)
511#define BIO_dgram_send_timedout(b) \
512 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP, 0, NULL)
513#define BIO_dgram_get_peer(b,peer) \
514 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_PEER, 0, (char *)peer)
515#define BIO_dgram_set_peer(b,peer) \
516 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, (char *)peer)
517
518/* These two aren't currently implemented */
519/* int BIO_get_ex_num(BIO *bio); */
520/* void BIO_set_ex_free_func(BIO *bio,int idx,void (*cb)()); */
521int BIO_set_ex_data(BIO *bio, int idx, void *data);
522void *BIO_get_ex_data(BIO *bio, int idx);
523int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
524 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
525unsigned long BIO_number_read(BIO *bio);
526unsigned long BIO_number_written(BIO *bio);
527
528int BIO_get_new_index(void);
529const BIO_METHOD *BIO_s_file(void);
530BIO *BIO_new_file(const char *filename, const char *mode);
531BIO *BIO_new_fp(FILE *stream, int close_flag);
532BIO *BIO_new(const BIO_METHOD *type);
533int BIO_free(BIO *a);
534int BIO_up_ref(BIO *bio);
535void *BIO_get_data(BIO *a);
536void BIO_set_data(BIO *a, void *ptr);
537int BIO_get_init(BIO *a);
538void BIO_set_init(BIO *a, int init);
539int BIO_get_shutdown(BIO *a);
540void BIO_set_shutdown(BIO *a, int shut);
541void BIO_vfree(BIO *a);
542int BIO_read(BIO *b, void *data, int len)
543 __attribute__((__bounded__(__buffer__,2,3)));
544int BIO_gets(BIO *bp, char *buf, int size)
545 __attribute__((__bounded__ (__string__,2,3)));
546int BIO_write(BIO *b, const void *data, int len)
547 __attribute__((__bounded__(__buffer__,2,3)));
548int BIO_puts(BIO *bp, const char *buf);
549int BIO_indent(BIO *b, int indent, int max);
550long BIO_ctrl(BIO *bp, int cmd, long larg, void *parg);
551long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp);
552char * BIO_ptr_ctrl(BIO *bp, int cmd, long larg);
553long BIO_int_ctrl(BIO *bp, int cmd, long larg, int iarg);
554BIO * BIO_push(BIO *b, BIO *append);
555BIO * BIO_pop(BIO *b);
556void BIO_free_all(BIO *a);
557BIO * BIO_find_type(BIO *b, int bio_type);
558BIO * BIO_next(BIO *b);
559void BIO_set_next(BIO *b, BIO *next);
560BIO * BIO_get_retry_BIO(BIO *bio, int *reason);
561int BIO_get_retry_reason(BIO *bio);
562void BIO_set_retry_reason(BIO *bio, int reason);
563BIO * BIO_dup_chain(BIO *in);
564
565long BIO_debug_callback(BIO *bio, int cmd, const char *argp, int argi,
566 long argl, long ret);
567
568const BIO_METHOD *BIO_s_mem(void);
569BIO *BIO_new_mem_buf(const void *buf, int len);
570const BIO_METHOD *BIO_s_socket(void);
571const BIO_METHOD *BIO_s_connect(void);
572const BIO_METHOD *BIO_s_accept(void);
573const BIO_METHOD *BIO_s_fd(void);
574const BIO_METHOD *BIO_s_log(void);
575const BIO_METHOD *BIO_s_bio(void);
576const BIO_METHOD *BIO_s_null(void);
577const BIO_METHOD *BIO_f_null(void);
578const BIO_METHOD *BIO_f_buffer(void);
579const BIO_METHOD *BIO_f_nbio_test(void);
580#ifndef OPENSSL_NO_DGRAM
581const BIO_METHOD *BIO_s_datagram(void);
582#endif
583
584/* BIO_METHOD *BIO_f_ber(void); */
585
586int BIO_sock_should_retry(int i);
587int BIO_sock_non_fatal_error(int _error);
588int BIO_dgram_non_fatal_error(int _error);
589
590int BIO_fd_should_retry(int i);
591int BIO_fd_non_fatal_error(int _error);
592
593int BIO_dump(BIO *b, const char *bytes, int len);
594int BIO_dump_indent(BIO *b, const char *bytes, int len, int indent);
595
596struct hostent *BIO_gethostbyname(const char *name);
597/* We might want a thread-safe interface too:
598 * struct hostent *BIO_gethostbyname_r(const char *name,
599 * struct hostent *result, void *buffer, size_t buflen);
600 * or something similar (caller allocates a struct hostent,
601 * pointed to by "result", and additional buffer space for the various
602 * substructures; if the buffer does not suffice, NULL is returned
603 * and an appropriate error code is set).
604 */
605int BIO_sock_error(int sock);
606int BIO_socket_ioctl(int fd, long type, void *arg);
607int BIO_socket_nbio(int fd, int mode);
608int BIO_get_port(const char *str, unsigned short *port_ptr);
609int BIO_get_host_ip(const char *str, unsigned char *ip);
610int BIO_get_accept_socket(char *host_port, int mode);
611int BIO_accept(int sock, char **ip_port);
612int BIO_sock_init(void );
613void BIO_sock_cleanup(void);
614int BIO_set_tcp_ndelay(int sock, int turn_on);
615
616BIO *BIO_new_socket(int sock, int close_flag);
617BIO *BIO_new_dgram(int fd, int close_flag);
618BIO *BIO_new_fd(int fd, int close_flag);
619BIO *BIO_new_connect(const char *host_port);
620BIO *BIO_new_accept(const char *host_port);
621
622int BIO_new_bio_pair(BIO **bio1, size_t writebuf1,
623 BIO **bio2, size_t writebuf2);
624/* If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints.
625 * Otherwise returns 0 and sets *bio1 and *bio2 to NULL.
626 * Size 0 uses default value.
627 */
628
629void BIO_copy_next_retry(BIO *b);
630
631/*long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);*/
632
633/* Needed for libressl-portable. */
634#ifndef __MINGW_PRINTF_FORMAT
635int BIO_printf(BIO *bio, const char *format, ...)
636 __attribute__((__format__(__printf__, 2, 3), __nonnull__(2)));
637#else
638int BIO_printf(BIO *bio, const char *format, ...)
639 __attribute__((__format__(__MINGW_PRINTF_FORMAT, 2, 3), __nonnull__(2)));
640#endif
641
642void ERR_load_BIO_strings(void);
643
644/* Error codes for the BIO functions. */
645
646/* Function codes. */
647#define BIO_F_ACPT_STATE 100
648#define BIO_F_BIO_ACCEPT 101
649#define BIO_F_BIO_BER_GET_HEADER 102
650#define BIO_F_BIO_CALLBACK_CTRL 131
651#define BIO_F_BIO_CTRL 103
652#define BIO_F_BIO_GETHOSTBYNAME 120
653#define BIO_F_BIO_GETS 104
654#define BIO_F_BIO_GET_ACCEPT_SOCKET 105
655#define BIO_F_BIO_GET_HOST_IP 106
656#define BIO_F_BIO_GET_PORT 107
657#define BIO_F_BIO_MAKE_PAIR 121
658#define BIO_F_BIO_NEW 108
659#define BIO_F_BIO_NEW_FILE 109
660#define BIO_F_BIO_NEW_MEM_BUF 126
661#define BIO_F_BIO_NREAD 123
662#define BIO_F_BIO_NREAD0 124
663#define BIO_F_BIO_NWRITE 125
664#define BIO_F_BIO_NWRITE0 122
665#define BIO_F_BIO_PUTS 110
666#define BIO_F_BIO_READ 111
667#define BIO_F_BIO_SOCK_INIT 112
668#define BIO_F_BIO_WRITE 113
669#define BIO_F_BUFFER_CTRL 114
670#define BIO_F_CONN_CTRL 127
671#define BIO_F_CONN_STATE 115
672#define BIO_F_DGRAM_SCTP_READ 132
673#define BIO_F_FILE_CTRL 116
674#define BIO_F_FILE_READ 130
675#define BIO_F_LINEBUFFER_CTRL 129
676#define BIO_F_MEM_READ 128
677#define BIO_F_MEM_WRITE 117
678#define BIO_F_SSL_NEW 118
679#define BIO_F_WSASTARTUP 119
680
681/* Reason codes. */
682#define BIO_R_ACCEPT_ERROR 100
683#define BIO_R_BAD_FOPEN_MODE 101
684#define BIO_R_BAD_HOSTNAME_LOOKUP 102
685#define BIO_R_BROKEN_PIPE 124
686#define BIO_R_CONNECT_ERROR 103
687#define BIO_R_EOF_ON_MEMORY_BIO 127
688#define BIO_R_ERROR_SETTING_NBIO 104
689#define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET 105
690#define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET 106
691#define BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET 107
692#define BIO_R_INVALID_ARGUMENT 125
693#define BIO_R_INVALID_IP_ADDRESS 108
694#define BIO_R_INVALID_PORT_NUMBER 129
695#define BIO_R_IN_USE 123
696#define BIO_R_KEEPALIVE 109
697#define BIO_R_LENGTH_TOO_LONG 130
698#define BIO_R_NBIO_CONNECT_ERROR 110
699#define BIO_R_NO_ACCEPT_PORT_SPECIFIED 111
700#define BIO_R_NO_HOSTNAME_SPECIFIED 112
701#define BIO_R_NO_PORT_DEFINED 113
702#define BIO_R_NO_PORT_SPECIFIED 114
703#define BIO_R_NO_SUCH_FILE 128
704#define BIO_R_NULL_PARAMETER 115
705#define BIO_R_TAG_MISMATCH 116
706#define BIO_R_UNABLE_TO_BIND_SOCKET 117
707#define BIO_R_UNABLE_TO_CREATE_SOCKET 118
708#define BIO_R_UNABLE_TO_LISTEN_SOCKET 119
709#define BIO_R_UNINITIALIZED 120
710#define BIO_R_UNSUPPORTED_METHOD 121
711#define BIO_R_WRITE_TO_READ_ONLY_BIO 126
712#define BIO_R_WSASTARTUP 122
713
714#ifdef __cplusplus
715}
716#endif
717#endif
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