source: lab.git/Dev/utvpn/utvpn-unix-v101-7101-public/src/Mayaqua/openssl/bio.h @ a1bae3e

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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
72extern "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#ifndef BIO_FLAGS_UPLINK
173/* "UPLINK" flag denotes file descriptors provided by application.
174   It defaults to 0, as most platforms don't require UPLINK interface. */
175#define BIO_FLAGS_UPLINK    0
176#endif
177
178/* Used in BIO_gethostbyname() */
179#define BIO_GHBN_CTRL_HITS      1
180#define BIO_GHBN_CTRL_MISSES        2
181#define BIO_GHBN_CTRL_CACHE_SIZE    3
182#define BIO_GHBN_CTRL_GET_ENTRY     4
183#define BIO_GHBN_CTRL_FLUSH     5
184
185/* Mostly used in the SSL BIO */
186/* Not used anymore
187 * #define BIO_FLAGS_PROTOCOL_DELAYED_READ 0x10
188 * #define BIO_FLAGS_PROTOCOL_DELAYED_WRITE 0x20
189 * #define BIO_FLAGS_PROTOCOL_STARTUP   0x40
190 */
191
192#define BIO_FLAGS_BASE64_NO_NL  0x100
193
194/* This is used with memory BIOs: it means we shouldn't free up or change the
195 * data in any way.
196 */
197#define BIO_FLAGS_MEM_RDONLY    0x200
198
199#define BIO_set_flags(b,f) ((b)->flags|=(f))
200#define BIO_get_flags(b) ((b)->flags)
201#define BIO_set_retry_special(b) \
202        ((b)->flags|=(BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
203#define BIO_set_retry_read(b) \
204        ((b)->flags|=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
205#define BIO_set_retry_write(b) \
206        ((b)->flags|=(BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))
207
208/* These are normally used internally in BIOs */
209#define BIO_clear_flags(b,f) ((b)->flags&= ~(f))
210#define BIO_clear_retry_flags(b) \
211        ((b)->flags&= ~(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
212#define BIO_get_retry_flags(b) \
213        ((b)->flags&(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
214
215/* These should be used by the application to tell why we should retry */
216#define BIO_should_read(a)      ((a)->flags & BIO_FLAGS_READ)
217#define BIO_should_write(a)     ((a)->flags & BIO_FLAGS_WRITE)
218#define BIO_should_io_special(a)    ((a)->flags & BIO_FLAGS_IO_SPECIAL)
219#define BIO_retry_type(a)       ((a)->flags & BIO_FLAGS_RWS)
220#define BIO_should_retry(a)     ((a)->flags & BIO_FLAGS_SHOULD_RETRY)
221
222/* The next three are used in conjunction with the
223 * BIO_should_io_special() condition.  After this returns true,
224 * BIO *BIO_get_retry_BIO(BIO *bio, int *reason); will walk the BIO
225 * stack and return the 'reason' for the special and the offending BIO.
226 * Given a BIO, BIO_get_retry_reason(bio) will return the code. */
227/* Returned from the SSL bio when the certificate retrieval code had an error */
228#define BIO_RR_SSL_X509_LOOKUP      0x01
229/* Returned from the connect BIO when a connect would have blocked */
230#define BIO_RR_CONNECT          0x02
231/* Returned from the accept BIO when an accept would have blocked */
232#define BIO_RR_ACCEPT           0x03
233
234/* These are passed by the BIO callback */
235#define BIO_CB_FREE 0x01
236#define BIO_CB_READ 0x02
237#define BIO_CB_WRITE    0x03
238#define BIO_CB_PUTS 0x04
239#define BIO_CB_GETS 0x05
240#define BIO_CB_CTRL 0x06
241
242/* The callback is called before and after the underling operation,
243 * The BIO_CB_RETURN flag indicates if it is after the call */
244#define BIO_CB_RETURN   0x80
245#define BIO_CB_return(a) ((a)|BIO_CB_RETURN))
246#define BIO_cb_pre(a)   (!((a)&BIO_CB_RETURN))
247#define BIO_cb_post(a)  ((a)&BIO_CB_RETURN)
248
249#define BIO_set_callback(b,cb)      ((b)->callback=(cb))
250#define BIO_set_callback_arg(b,arg) ((b)->cb_arg=(char *)(arg))
251#define BIO_get_callback_arg(b)     ((b)->cb_arg)
252#define BIO_get_callback(b)     ((b)->callback)
253#define BIO_method_name(b)      ((b)->method->name)
254#define BIO_method_type(b)      ((b)->method->type)
255
256typedef struct bio_st BIO;
257
258typedef void bio_info_cb(struct bio_st *, int, const char *, int, long, long);
259
260#ifndef OPENSSL_SYS_WIN16
261typedef struct bio_method_st
262    {
263    int type;
264    const char *name;
265    int (*bwrite)(BIO *, const char *, int);
266    int (*bread)(BIO *, char *, int);
267    int (*bputs)(BIO *, const char *);
268    int (*bgets)(BIO *, char *, int);
269    long (*ctrl)(BIO *, int, long, void *);
270    int (*create)(BIO *);
271    int (*destroy)(BIO *);
272        long (*callback_ctrl)(BIO *, int, bio_info_cb *);
273    } BIO_METHOD;
274#else
275typedef struct bio_method_st
276    {
277    int type;
278    const char *name;
279    int (_far *bwrite)();
280    int (_far *bread)();
281    int (_far *bputs)();
282    int (_far *bgets)();
283    long (_far *ctrl)();
284    int (_far *create)();
285    int (_far *destroy)();
286    long (_far *callback_ctrl)();
287    } BIO_METHOD;
288#endif
289
290struct bio_st
291    {
292    BIO_METHOD *method;
293    /* bio, mode, argp, argi, argl, ret */
294    long (*callback)(struct bio_st *,int,const char *,int, long,long);
295    char *cb_arg; /* first argument for the callback */
296
297    int init;
298    int shutdown;
299    int flags;  /* extra storage */
300    int retry_reason;
301    int num;
302    void *ptr;
303    struct bio_st *next_bio;    /* used by filter BIOs */
304    struct bio_st *prev_bio;    /* used by filter BIOs */
305    int references;
306    unsigned long num_read;
307    unsigned long num_write;
308
309    CRYPTO_EX_DATA ex_data;
310    };
311
312DECLARE_STACK_OF(BIO)
313
314typedef struct bio_f_buffer_ctx_struct
315    {
316    /* BIO *bio; */ /* this is now in the BIO struct */
317    int ibuf_size;  /* how big is the input buffer */
318    int obuf_size;  /* how big is the output buffer */
319
320    char *ibuf;     /* the char array */
321    int ibuf_len;       /* how many bytes are in it */
322    int ibuf_off;       /* write/read offset */
323
324    char *obuf;     /* the char array */
325    int obuf_len;       /* how many bytes are in it */
326    int obuf_off;       /* write/read offset */
327    } BIO_F_BUFFER_CTX;
328
329/* connect BIO stuff */
330#define BIO_CONN_S_BEFORE       1
331#define BIO_CONN_S_GET_IP       2
332#define BIO_CONN_S_GET_PORT     3
333#define BIO_CONN_S_CREATE_SOCKET    4
334#define BIO_CONN_S_CONNECT      5
335#define BIO_CONN_S_OK           6
336#define BIO_CONN_S_BLOCKED_CONNECT  7
337#define BIO_CONN_S_NBIO         8
338/*#define BIO_CONN_get_param_hostname   BIO_ctrl */
339
340#define BIO_C_SET_CONNECT           100
341#define BIO_C_DO_STATE_MACHINE          101
342#define BIO_C_SET_NBIO              102
343#define BIO_C_SET_PROXY_PARAM           103
344#define BIO_C_SET_FD                104
345#define BIO_C_GET_FD                105
346#define BIO_C_SET_FILE_PTR          106
347#define BIO_C_GET_FILE_PTR          107
348#define BIO_C_SET_FILENAME          108
349#define BIO_C_SET_SSL               109
350#define BIO_C_GET_SSL               110
351#define BIO_C_SET_MD                111
352#define BIO_C_GET_MD                112
353#define BIO_C_GET_CIPHER_STATUS         113
354#define BIO_C_SET_BUF_MEM           114
355#define BIO_C_GET_BUF_MEM_PTR           115
356#define BIO_C_GET_BUFF_NUM_LINES        116
357#define BIO_C_SET_BUFF_SIZE         117
358#define BIO_C_SET_ACCEPT            118
359#define BIO_C_SSL_MODE              119
360#define BIO_C_GET_MD_CTX            120
361#define BIO_C_GET_PROXY_PARAM           121
362#define BIO_C_SET_BUFF_READ_DATA        122 /* data to read first */
363#define BIO_C_GET_CONNECT           123
364#define BIO_C_GET_ACCEPT            124
365#define BIO_C_SET_SSL_RENEGOTIATE_BYTES     125
366#define BIO_C_GET_SSL_NUM_RENEGOTIATES      126
367#define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT   127
368#define BIO_C_FILE_SEEK             128
369#define BIO_C_GET_CIPHER_CTX            129
370#define BIO_C_SET_BUF_MEM_EOF_RETURN        130/*return end of input value*/
371#define BIO_C_SET_BIND_MODE         131
372#define BIO_C_GET_BIND_MODE         132
373#define BIO_C_FILE_TELL             133
374#define BIO_C_GET_SOCKS             134
375#define BIO_C_SET_SOCKS             135
376
377#define BIO_C_SET_WRITE_BUF_SIZE        136/* for BIO_s_bio */
378#define BIO_C_GET_WRITE_BUF_SIZE        137
379#define BIO_C_MAKE_BIO_PAIR         138
380#define BIO_C_DESTROY_BIO_PAIR          139
381#define BIO_C_GET_WRITE_GUARANTEE       140
382#define BIO_C_GET_READ_REQUEST          141
383#define BIO_C_SHUTDOWN_WR           142
384#define BIO_C_NREAD0                143
385#define BIO_C_NREAD             144
386#define BIO_C_NWRITE0               145
387#define BIO_C_NWRITE                146
388#define BIO_C_RESET_READ_REQUEST        147
389
390
391#define BIO_set_app_data(s,arg)     BIO_set_ex_data(s,0,arg)
392#define BIO_get_app_data(s)     BIO_get_ex_data(s,0)
393
394/* BIO_s_connect() and BIO_s_socks4a_connect() */
395#define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0,(char *)name)
396#define BIO_set_conn_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,1,(char *)port)
397#define BIO_set_conn_ip(b,ip)     BIO_ctrl(b,BIO_C_SET_CONNECT,2,(char *)ip)
398#define BIO_set_conn_int_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,3,(char *)port)
399#define BIO_get_conn_hostname(b)  BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0)
400#define BIO_get_conn_port(b)      BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1)
401#define BIO_get_conn_ip(b)       BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2)
402#define BIO_get_conn_int_port(b) BIO_int_ctrl(b,BIO_C_GET_CONNECT,3)
403
404
405#define BIO_set_nbio(b,n)   BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
406
407/* BIO_s_accept_socket() */
408#define BIO_set_accept_port(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0,(char *)name)
409#define BIO_get_accept_port(b)  BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0)
410/* #define BIO_set_nbio(b,n)    BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */
411#define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,1,(n)?"a":NULL)
412#define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(char *)bio)
413
414#define BIO_BIND_NORMAL         0
415#define BIO_BIND_REUSEADDR_IF_UNUSED    1
416#define BIO_BIND_REUSEADDR      2
417#define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL)
418#define BIO_get_bind_mode(b,mode) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL)
419
420#define BIO_do_connect(b)   BIO_do_handshake(b)
421#define BIO_do_accept(b)    BIO_do_handshake(b)
422#define BIO_do_handshake(b) BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL)
423
424/* BIO_s_proxy_client() */
425#define BIO_set_url(b,url)  BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,0,(char *)(url))
426#define BIO_set_proxies(b,p)    BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,1,(char *)(p))
427/* BIO_set_nbio(b,n) */
428#define BIO_set_filter_bio(b,s) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,2,(char *)(s))
429/* BIO *BIO_get_filter_bio(BIO *bio); */
430#define BIO_set_proxy_cb(b,cb) BIO_callback_ctrl(b,BIO_C_SET_PROXY_PARAM,3,(void *(*cb)()))
431#define BIO_set_proxy_header(b,sk) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,4,(char *)sk)
432#define BIO_set_no_connect_return(b,bool) BIO_int_ctrl(b,BIO_C_SET_PROXY_PARAM,5,bool)
433
434#define BIO_get_proxy_header(b,skp) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,0,(char *)skp)
435#define BIO_get_proxies(b,pxy_p) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,1,(char *)(pxy_p))
436#define BIO_get_url(b,url)  BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,2,(char *)(url))
437#define BIO_get_no_connect_return(b)    BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,5,NULL)
438
439#define BIO_set_fd(b,fd,c)  BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
440#define BIO_get_fd(b,c)     BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c)
441
442#define BIO_set_fp(b,fp,c)  BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)fp)
443#define BIO_get_fp(b,fpp)   BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)fpp)
444
445#define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL)
446#define BIO_tell(b) (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL)
447
448/* name is cast to lose const, but might be better to route through a function
449   so we can do it safely */
450#ifdef CONST_STRICT
451/* If you are wondering why this isn't defined, its because CONST_STRICT is
452 * purely a compile-time kludge to allow const to be checked.
453 */
454int BIO_read_filename(BIO *b,const char *name);
455#else
456#define BIO_read_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
457        BIO_CLOSE|BIO_FP_READ,(char *)name)
458#endif
459#define BIO_write_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
460        BIO_CLOSE|BIO_FP_WRITE,name)
461#define BIO_append_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
462        BIO_CLOSE|BIO_FP_APPEND,name)
463#define BIO_rw_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
464        BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
465
466/* WARNING WARNING, this ups the reference count on the read bio of the
467 * SSL structure.  This is because the ssl read BIO is now pointed to by
468 * the next_bio field in the bio.  So when you free the BIO, make sure
469 * you are doing a BIO_free_all() to catch the underlying BIO. */
470#define BIO_set_ssl(b,ssl,c)    BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)ssl)
471#define BIO_get_ssl(b,sslp) BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)sslp)
472#define BIO_set_ssl_mode(b,client)  BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL)
473#define BIO_set_ssl_renegotiate_bytes(b,num) \
474    BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL);
475#define BIO_get_num_renegotiates(b) \
476    BIO_ctrl(b,BIO_C_GET_SSL_NUM_RENEGOTIATES,0,NULL);
477#define BIO_set_ssl_renegotiate_timeout(b,seconds) \
478    BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL);
479
480/* defined in evp.h */
481/* #define BIO_set_md(b,md) BIO_ctrl(b,BIO_C_SET_MD,1,(char *)md) */
482
483#define BIO_get_mem_data(b,pp)  BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)pp)
484#define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)bm)
485#define BIO_get_mem_ptr(b,pp)   BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0,(char *)pp)
486#define BIO_set_mem_eof_return(b,v) \
487                BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL)
488
489/* For the BIO_f_buffer() type */
490#define BIO_get_buffer_num_lines(b) BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL)
491#define BIO_set_buffer_size(b,size) BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL)
492#define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0)
493#define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1)
494#define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf)
495
496/* Don't use the next one unless you know what you are doing :-) */
497#define BIO_dup_state(b,ret)    BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret))
498
499#define BIO_reset(b)        (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
500#define BIO_eof(b)      (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL)
501#define BIO_set_close(b,c)  (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL)
502#define BIO_get_close(b)    (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL)
503#define BIO_pending(b)      (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL)
504#define BIO_wpending(b)     (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL)
505/* ...pending macros have inappropriate return type */
506size_t BIO_ctrl_pending(BIO *b);
507size_t BIO_ctrl_wpending(BIO *b);
508#define BIO_flush(b)        (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL)
509#define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0, \
510                           cbp)
511#define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,cb)
512
513/* For the BIO_f_buffer() type */
514#define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL)
515
516/* For BIO_s_bio() */
517#define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
518#define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
519#define BIO_make_bio_pair(b1,b2)   (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
520#define BIO_destroy_bio_pair(b)    (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
521#define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 0, NULL)
522/* macros with inappropriate type -- but ...pending macros use int too: */
523#define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
524#define BIO_get_read_request(b)    (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
525size_t BIO_ctrl_get_write_guarantee(BIO *b);
526size_t BIO_ctrl_get_read_request(BIO *b);
527int BIO_ctrl_reset_read_request(BIO *b);
528
529/* ctrl macros for dgram */
530#define BIO_ctrl_dgram_connect(b,peer)  \
531                     (int)BIO_ctrl(b,BIO_CTRL_DGRAM_CONNECT,0, (char *)peer)
532#define BIO_ctrl_set_connected(b, state, peer) \
533         (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_CONNECTED, state, (char *)peer)
534#define BIO_dgram_recv_timedout(b) \
535         (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP, 0, NULL)
536#define BIO_dgram_send_timedout(b) \
537         (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP, 0, NULL)
538#define BIO_dgram_set_peer(b,peer) \
539         (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, (char *)peer)
540
541/* These two aren't currently implemented */
542/* int BIO_get_ex_num(BIO *bio); */
543/* void BIO_set_ex_free_func(BIO *bio,int idx,void (*cb)()); */
544int BIO_set_ex_data(BIO *bio,int idx,void *data);
545void *BIO_get_ex_data(BIO *bio,int idx);
546int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
547    CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
548unsigned long BIO_number_read(BIO *bio);
549unsigned long BIO_number_written(BIO *bio);
550
551# ifndef OPENSSL_NO_FP_API
552#  if defined(OPENSSL_SYS_WIN16) && defined(_WINDLL)
553BIO_METHOD *BIO_s_file_internal(void);
554BIO *BIO_new_file_internal(char *filename, char *mode);
555BIO *BIO_new_fp_internal(FILE *stream, int close_flag);
556#    define BIO_s_file  BIO_s_file_internal
557#    define BIO_new_file    BIO_new_file_internal
558#    define BIO_new_fp  BIO_new_fp_internal
559#  else /* FP_API */
560BIO_METHOD *BIO_s_file(void );
561BIO *BIO_new_file(const char *filename, const char *mode);
562BIO *BIO_new_fp(FILE *stream, int close_flag);
563#    define BIO_s_file_internal     BIO_s_file
564#    define BIO_new_file_internal   BIO_new_file
565#    define BIO_new_fp_internal     BIO_s_file
566#  endif /* FP_API */
567# endif
568BIO *   BIO_new(BIO_METHOD *type);
569int BIO_set(BIO *a,BIO_METHOD *type);
570int BIO_free(BIO *a);
571void    BIO_vfree(BIO *a);
572int BIO_read(BIO *b, void *data, int len);
573int BIO_gets(BIO *bp,char *buf, int size);
574int BIO_write(BIO *b, const void *data, int len);
575int BIO_puts(BIO *bp,const char *buf);
576int BIO_indent(BIO *b,int indent,int max);
577long    BIO_ctrl(BIO *bp,int cmd,long larg,void *parg);
578long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)(struct bio_st *, int, const char *, int, long, long));
579char *  BIO_ptr_ctrl(BIO *bp,int cmd,long larg);
580long    BIO_int_ctrl(BIO *bp,int cmd,long larg,int iarg);
581BIO *   BIO_push(BIO *b,BIO *append);
582BIO *   BIO_pop(BIO *b);
583void    BIO_free_all(BIO *a);
584BIO *   BIO_find_type(BIO *b,int bio_type);
585BIO *   BIO_next(BIO *b);
586BIO *   BIO_get_retry_BIO(BIO *bio, int *reason);
587int BIO_get_retry_reason(BIO *bio);
588BIO *   BIO_dup_chain(BIO *in);
589
590int BIO_nread0(BIO *bio, char **buf);
591int BIO_nread(BIO *bio, char **buf, int num);
592int BIO_nwrite0(BIO *bio, char **buf);
593int BIO_nwrite(BIO *bio, char **buf, int num);
594
595#ifndef OPENSSL_SYS_WIN16
596long BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
597    long argl,long ret);
598#else
599long _far _loadds BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
600    long argl,long ret);
601#endif
602
603BIO_METHOD *BIO_s_mem(void);
604BIO *BIO_new_mem_buf(void *buf, int len);
605BIO_METHOD *BIO_s_socket(void);
606BIO_METHOD *BIO_s_connect(void);
607BIO_METHOD *BIO_s_accept(void);
608BIO_METHOD *BIO_s_fd(void);
609#ifndef OPENSSL_SYS_OS2
610BIO_METHOD *BIO_s_log(void);
611#endif
612BIO_METHOD *BIO_s_bio(void);
613BIO_METHOD *BIO_s_null(void);
614BIO_METHOD *BIO_f_null(void);
615BIO_METHOD *BIO_f_buffer(void);
616#ifdef OPENSSL_SYS_VMS
617BIO_METHOD *BIO_f_linebuffer(void);
618#endif
619BIO_METHOD *BIO_f_nbio_test(void);
620#ifndef OPENSSL_NO_DGRAM
621BIO_METHOD *BIO_s_datagram(void);
622#endif
623
624/* BIO_METHOD *BIO_f_ber(void); */
625
626int BIO_sock_should_retry(int i);
627int BIO_sock_non_fatal_error(int error);
628int BIO_dgram_non_fatal_error(int error);
629
630int BIO_fd_should_retry(int i);
631int BIO_fd_non_fatal_error(int error);
632int BIO_dump_cb(int (*cb)(const void *data, size_t len, void *u),
633        void *u, const char *s, int len);
634int BIO_dump_indent_cb(int (*cb)(const void *data, size_t len, void *u),
635               void *u, const char *s, int len, int indent);
636int BIO_dump(BIO *b,const char *bytes,int len);
637int BIO_dump_indent(BIO *b,const char *bytes,int len,int indent);
638#ifndef OPENSSL_NO_FP_API
639int BIO_dump_fp(FILE *fp, const char *s, int len);
640int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent);
641#endif
642struct hostent *BIO_gethostbyname(const char *name);
643/* We might want a thread-safe interface too:
644 * struct hostent *BIO_gethostbyname_r(const char *name,
645 *     struct hostent *result, void *buffer, size_t buflen);
646 * or something similar (caller allocates a struct hostent,
647 * pointed to by "result", and additional buffer space for the various
648 * substructures; if the buffer does not suffice, NULL is returned
649 * and an appropriate error code is set).
650 */
651int BIO_sock_error(int sock);
652int BIO_socket_ioctl(int fd, long type, void *arg);
653int BIO_socket_nbio(int fd,int mode);
654int BIO_get_port(const char *str, unsigned short *port_ptr);
655int BIO_get_host_ip(const char *str, unsigned char *ip);
656int BIO_get_accept_socket(char *host_port,int mode);
657int BIO_accept(int sock,char **ip_port);
658int BIO_sock_init(void );
659void BIO_sock_cleanup(void);
660int BIO_set_tcp_ndelay(int sock,int turn_on);
661
662BIO *BIO_new_socket(int sock, int close_flag);
663BIO *BIO_new_dgram(int fd, int close_flag);
664BIO *BIO_new_fd(int fd, int close_flag);
665BIO *BIO_new_connect(char *host_port);
666BIO *BIO_new_accept(char *host_port);
667
668int BIO_new_bio_pair(BIO **bio1, size_t writebuf1,
669    BIO **bio2, size_t writebuf2);
670/* If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints.
671 * Otherwise returns 0 and sets *bio1 and *bio2 to NULL.
672 * Size 0 uses default value.
673 */
674
675void BIO_copy_next_retry(BIO *b);
676
677/*long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);*/
678
679#ifndef __GNUC__
680#define __attribute__(x)
681#endif
682int BIO_printf(BIO *bio, const char *format, ...)
683    __attribute__((__format__(__printf__,2,3)));
684int BIO_vprintf(BIO *bio, const char *format, va_list args)
685    __attribute__((__format__(__printf__,2,0)));
686int BIO_snprintf(char *buf, size_t n, const char *format, ...)
687    __attribute__((__format__(__printf__,3,4)));
688int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
689    __attribute__((__format__(__printf__,3,0)));
690
691/* BEGIN ERROR CODES */
692/* The following lines are auto generated by the script mkerr.pl. Any changes
693 * made after this point may be overwritten when the script is next run.
694 */
695void ERR_load_BIO_strings(void);
696
697/* Error codes for the BIO functions. */
698
699/* Function codes. */
700#define BIO_F_ACPT_STATE                 100
701#define BIO_F_BIO_ACCEPT                 101
702#define BIO_F_BIO_BER_GET_HEADER             102
703#define BIO_F_BIO_CALLBACK_CTRL              131
704#define BIO_F_BIO_CTRL                   103
705#define BIO_F_BIO_GETHOSTBYNAME              120
706#define BIO_F_BIO_GETS                   104
707#define BIO_F_BIO_GET_ACCEPT_SOCKET          105
708#define BIO_F_BIO_GET_HOST_IP                106
709#define BIO_F_BIO_GET_PORT               107
710#define BIO_F_BIO_MAKE_PAIR              121
711#define BIO_F_BIO_NEW                    108
712#define BIO_F_BIO_NEW_FILE               109
713#define BIO_F_BIO_NEW_MEM_BUF                126
714#define BIO_F_BIO_NREAD                  123
715#define BIO_F_BIO_NREAD0                 124
716#define BIO_F_BIO_NWRITE                 125
717#define BIO_F_BIO_NWRITE0                122
718#define BIO_F_BIO_PUTS                   110
719#define BIO_F_BIO_READ                   111
720#define BIO_F_BIO_SOCK_INIT              112
721#define BIO_F_BIO_WRITE                  113
722#define BIO_F_BUFFER_CTRL                114
723#define BIO_F_CONN_CTRL                  127
724#define BIO_F_CONN_STATE                 115
725#define BIO_F_FILE_CTRL                  116
726#define BIO_F_FILE_READ                  130
727#define BIO_F_LINEBUFFER_CTRL                129
728#define BIO_F_MEM_READ                   128
729#define BIO_F_MEM_WRITE                  117
730#define BIO_F_SSL_NEW                    118
731#define BIO_F_WSASTARTUP                 119
732
733/* Reason codes. */
734#define BIO_R_ACCEPT_ERROR               100
735#define BIO_R_BAD_FOPEN_MODE                 101
736#define BIO_R_BAD_HOSTNAME_LOOKUP            102
737#define BIO_R_BROKEN_PIPE                124
738#define BIO_R_CONNECT_ERROR              103
739#define BIO_R_EOF_ON_MEMORY_BIO              127
740#define BIO_R_ERROR_SETTING_NBIO             104
741#define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET  105
742#define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET    106
743#define BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET      107
744#define BIO_R_INVALID_ARGUMENT               125
745#define BIO_R_INVALID_IP_ADDRESS             108
746#define BIO_R_IN_USE                     123
747#define BIO_R_KEEPALIVE                  109
748#define BIO_R_NBIO_CONNECT_ERROR             110
749#define BIO_R_NO_ACCEPT_PORT_SPECIFIED           111
750#define BIO_R_NO_HOSTNAME_SPECIFIED          112
751#define BIO_R_NO_PORT_DEFINED                113
752#define BIO_R_NO_PORT_SPECIFIED              114
753#define BIO_R_NO_SUCH_FILE               128
754#define BIO_R_NULL_PARAMETER                 115
755#define BIO_R_TAG_MISMATCH               116
756#define BIO_R_UNABLE_TO_BIND_SOCKET          117
757#define BIO_R_UNABLE_TO_CREATE_SOCKET            118
758#define BIO_R_UNABLE_TO_LISTEN_SOCKET            119
759#define BIO_R_UNINITIALIZED              120
760#define BIO_R_UNSUPPORTED_METHOD             121
761#define BIO_R_WRITE_TO_READ_ONLY_BIO             126
762#define BIO_R_WSASTARTUP                 122
763
764#ifdef  __cplusplus
765}
766#endif
767#endif
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