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1/*
2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef HEADER_BIO_H
11# define HEADER_BIO_H
12
13# include <openssl/e_os2.h>
14
15# ifndef OPENSSL_NO_STDIO
16# include <stdio.h>
17# endif
18# include <stdarg.h>
19
20# include <openssl/crypto.h>
21# include <openssl/bioerr.h>
22
23# ifndef OPENSSL_NO_SCTP
24# include <openssl/e_os2.h>
25# endif
26
27#ifdef __cplusplus
28extern "C" {
29#endif
30
31/* There are the classes of BIOs */
32# define BIO_TYPE_DESCRIPTOR 0x0100 /* socket, fd, connect or accept */
33# define BIO_TYPE_FILTER 0x0200
34# define BIO_TYPE_SOURCE_SINK 0x0400
35
36/* These are the 'types' of BIOs */
37# define BIO_TYPE_NONE 0
38# define BIO_TYPE_MEM ( 1|BIO_TYPE_SOURCE_SINK)
39# define BIO_TYPE_FILE ( 2|BIO_TYPE_SOURCE_SINK)
40
41# define BIO_TYPE_FD ( 4|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
42# define BIO_TYPE_SOCKET ( 5|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
43# define BIO_TYPE_NULL ( 6|BIO_TYPE_SOURCE_SINK)
44# define BIO_TYPE_SSL ( 7|BIO_TYPE_FILTER)
45# define BIO_TYPE_MD ( 8|BIO_TYPE_FILTER)
46# define BIO_TYPE_BUFFER ( 9|BIO_TYPE_FILTER)
47# define BIO_TYPE_CIPHER (10|BIO_TYPE_FILTER)
48# define BIO_TYPE_BASE64 (11|BIO_TYPE_FILTER)
49# define BIO_TYPE_CONNECT (12|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
50# define BIO_TYPE_ACCEPT (13|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
51
52# define BIO_TYPE_NBIO_TEST (16|BIO_TYPE_FILTER)/* server proxy BIO */
53# define BIO_TYPE_NULL_FILTER (17|BIO_TYPE_FILTER)
54# define BIO_TYPE_BIO (19|BIO_TYPE_SOURCE_SINK)/* half a BIO pair */
55# define BIO_TYPE_LINEBUFFER (20|BIO_TYPE_FILTER)
56# define BIO_TYPE_DGRAM (21|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
57# define BIO_TYPE_ASN1 (22|BIO_TYPE_FILTER)
58# define BIO_TYPE_COMP (23|BIO_TYPE_FILTER)
59# ifndef OPENSSL_NO_SCTP
60# define BIO_TYPE_DGRAM_SCTP (24|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR)
61# endif
62
63#define BIO_TYPE_START 128
64
65/*
66 * BIO_FILENAME_READ|BIO_CLOSE to open or close on free.
67 * BIO_set_fp(in,stdin,BIO_NOCLOSE);
68 */
69# define BIO_NOCLOSE 0x00
70# define BIO_CLOSE 0x01
71
72/*
73 * These are used in the following macros and are passed to BIO_ctrl()
74 */
75# define BIO_CTRL_RESET 1/* opt - rewind/zero etc */
76# define BIO_CTRL_EOF 2/* opt - are we at the eof */
77# define BIO_CTRL_INFO 3/* opt - extra tit-bits */
78# define BIO_CTRL_SET 4/* man - set the 'IO' type */
79# define BIO_CTRL_GET 5/* man - get the 'IO' type */
80# define BIO_CTRL_PUSH 6/* opt - internal, used to signify change */
81# define BIO_CTRL_POP 7/* opt - internal, used to signify change */
82# define BIO_CTRL_GET_CLOSE 8/* man - set the 'close' on free */
83# define BIO_CTRL_SET_CLOSE 9/* man - set the 'close' on free */
84# define BIO_CTRL_PENDING 10/* opt - is their more data buffered */
85# define BIO_CTRL_FLUSH 11/* opt - 'flush' buffered output */
86# define BIO_CTRL_DUP 12/* man - extra stuff for 'duped' BIO */
87# define BIO_CTRL_WPENDING 13/* opt - number of bytes still to write */
88# define BIO_CTRL_SET_CALLBACK 14/* opt - set callback function */
89# define BIO_CTRL_GET_CALLBACK 15/* opt - set callback function */
90
91# define BIO_CTRL_PEEK 29/* BIO_f_buffer special */
92# define BIO_CTRL_SET_FILENAME 30/* BIO_s_file special */
93
94/* dgram BIO stuff */
95# define BIO_CTRL_DGRAM_CONNECT 31/* BIO dgram special */
96# define BIO_CTRL_DGRAM_SET_CONNECTED 32/* allow for an externally connected
97 * socket to be passed in */
98# define BIO_CTRL_DGRAM_SET_RECV_TIMEOUT 33/* setsockopt, essentially */
99# define BIO_CTRL_DGRAM_GET_RECV_TIMEOUT 34/* getsockopt, essentially */
100# define BIO_CTRL_DGRAM_SET_SEND_TIMEOUT 35/* setsockopt, essentially */
101# define BIO_CTRL_DGRAM_GET_SEND_TIMEOUT 36/* getsockopt, essentially */
102
103# define BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP 37/* flag whether the last */
104# define BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP 38/* I/O operation tiemd out */
105
106/* #ifdef IP_MTU_DISCOVER */
107# define BIO_CTRL_DGRAM_MTU_DISCOVER 39/* set DF bit on egress packets */
108/* #endif */
109
110# define BIO_CTRL_DGRAM_QUERY_MTU 40/* as kernel for current MTU */
111# define BIO_CTRL_DGRAM_GET_FALLBACK_MTU 47
112# define BIO_CTRL_DGRAM_GET_MTU 41/* get cached value for MTU */
113# define BIO_CTRL_DGRAM_SET_MTU 42/* set cached value for MTU.
114 * want to use this if asking
115 * the kernel fails */
116
117# define BIO_CTRL_DGRAM_MTU_EXCEEDED 43/* check whether the MTU was
118 * exceed in the previous write
119 * operation */
120
121# define BIO_CTRL_DGRAM_GET_PEER 46
122# define BIO_CTRL_DGRAM_SET_PEER 44/* Destination for the data */
123
124# define BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT 45/* Next DTLS handshake timeout
125 * to adjust socket timeouts */
126# define BIO_CTRL_DGRAM_SET_DONT_FRAG 48
127
128# define BIO_CTRL_DGRAM_GET_MTU_OVERHEAD 49
129
130/* Deliberately outside of OPENSSL_NO_SCTP - used in bss_dgram.c */
131# define BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE 50
132# ifndef OPENSSL_NO_SCTP
133/* SCTP stuff */
134# define BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY 51
135# define BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY 52
136# define BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD 53
137# define BIO_CTRL_DGRAM_SCTP_GET_SNDINFO 60
138# define BIO_CTRL_DGRAM_SCTP_SET_SNDINFO 61
139# define BIO_CTRL_DGRAM_SCTP_GET_RCVINFO 62
140# define BIO_CTRL_DGRAM_SCTP_SET_RCVINFO 63
141# define BIO_CTRL_DGRAM_SCTP_GET_PRINFO 64
142# define BIO_CTRL_DGRAM_SCTP_SET_PRINFO 65
143# define BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN 70
144# endif
145
146# define BIO_CTRL_DGRAM_SET_PEEK_MODE 71
147
148/* modifiers */
149# define BIO_FP_READ 0x02
150# define BIO_FP_WRITE 0x04
151# define BIO_FP_APPEND 0x08
152# define BIO_FP_TEXT 0x10
153
154# define BIO_FLAGS_READ 0x01
155# define BIO_FLAGS_WRITE 0x02
156# define BIO_FLAGS_IO_SPECIAL 0x04
157# define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL)
158# define BIO_FLAGS_SHOULD_RETRY 0x08
159# ifndef BIO_FLAGS_UPLINK
160/*
161 * "UPLINK" flag denotes file descriptors provided by application. It
162 * defaults to 0, as most platforms don't require UPLINK interface.
163 */
164# define BIO_FLAGS_UPLINK 0
165# endif
166
167# define BIO_FLAGS_BASE64_NO_NL 0x100
168
169/*
170 * This is used with memory BIOs:
171 * BIO_FLAGS_MEM_RDONLY means we shouldn't free up or change the data in any way;
172 * BIO_FLAGS_NONCLEAR_RST means we shouldn't clear data on reset.
173 */
174# define BIO_FLAGS_MEM_RDONLY 0x200
175# define BIO_FLAGS_NONCLEAR_RST 0x400
176
177typedef union bio_addr_st BIO_ADDR;
178typedef struct bio_addrinfo_st BIO_ADDRINFO;
179
180int BIO_get_new_index(void);
181void BIO_set_flags(BIO *b, int flags);
182int BIO_test_flags(const BIO *b, int flags);
183void BIO_clear_flags(BIO *b, int flags);
184
185# define BIO_get_flags(b) BIO_test_flags(b, ~(0x0))
186# define BIO_set_retry_special(b) \
187 BIO_set_flags(b, (BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
188# define BIO_set_retry_read(b) \
189 BIO_set_flags(b, (BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
190# define BIO_set_retry_write(b) \
191 BIO_set_flags(b, (BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))
192
193/* These are normally used internally in BIOs */
194# define BIO_clear_retry_flags(b) \
195 BIO_clear_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
196# define BIO_get_retry_flags(b) \
197 BIO_test_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
198
199/* These should be used by the application to tell why we should retry */
200# define BIO_should_read(a) BIO_test_flags(a, BIO_FLAGS_READ)
201# define BIO_should_write(a) BIO_test_flags(a, BIO_FLAGS_WRITE)
202# define BIO_should_io_special(a) BIO_test_flags(a, BIO_FLAGS_IO_SPECIAL)
203# define BIO_retry_type(a) BIO_test_flags(a, BIO_FLAGS_RWS)
204# define BIO_should_retry(a) BIO_test_flags(a, BIO_FLAGS_SHOULD_RETRY)
205
206/*
207 * The next three are used in conjunction with the BIO_should_io_special()
208 * condition. After this returns true, BIO *BIO_get_retry_BIO(BIO *bio, int
209 * *reason); will walk the BIO stack and return the 'reason' for the special
210 * and the offending BIO. Given a BIO, BIO_get_retry_reason(bio) will return
211 * the code.
212 */
213/*
214 * Returned from the SSL bio when the certificate retrieval code had an error
215 */
216# define BIO_RR_SSL_X509_LOOKUP 0x01
217/* Returned from the connect BIO when a connect would have blocked */
218# define BIO_RR_CONNECT 0x02
219/* Returned from the accept BIO when an accept would have blocked */
220# define BIO_RR_ACCEPT 0x03
221
222/* These are passed by the BIO callback */
223# define BIO_CB_FREE 0x01
224# define BIO_CB_READ 0x02
225# define BIO_CB_WRITE 0x03
226# define BIO_CB_PUTS 0x04
227# define BIO_CB_GETS 0x05
228# define BIO_CB_CTRL 0x06
229
230/*
231 * The callback is called before and after the underling operation, The
232 * BIO_CB_RETURN flag indicates if it is after the call
233 */
234# define BIO_CB_RETURN 0x80
235# define BIO_CB_return(a) ((a)|BIO_CB_RETURN)
236# define BIO_cb_pre(a) (!((a)&BIO_CB_RETURN))
237# define BIO_cb_post(a) ((a)&BIO_CB_RETURN)
238
239typedef long (*BIO_callback_fn)(BIO *b, int oper, const char *argp, int argi,
240 long argl, long ret);
241typedef long (*BIO_callback_fn_ex)(BIO *b, int oper, const char *argp,
242 size_t len, int argi,
243 long argl, int ret, size_t *processed);
244BIO_callback_fn BIO_get_callback(const BIO *b);
245void BIO_set_callback(BIO *b, BIO_callback_fn callback);
246
247BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b);
248void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex callback);
249
250char *BIO_get_callback_arg(const BIO *b);
251void BIO_set_callback_arg(BIO *b, char *arg);
252
253typedef struct bio_method_st BIO_METHOD;
254
255const char *BIO_method_name(const BIO *b);
256int BIO_method_type(const BIO *b);
257
258typedef int BIO_info_cb(BIO *, int, int);
259typedef BIO_info_cb bio_info_cb; /* backward compatibility */
260
261DEFINE_STACK_OF(BIO)
262
263/* Prefix and suffix callback in ASN1 BIO */
264typedef int asn1_ps_func (BIO *b, unsigned char **pbuf, int *plen,
265 void *parg);
266
267# ifndef OPENSSL_NO_SCTP
268/* SCTP parameter structs */
269struct bio_dgram_sctp_sndinfo {
270 uint16_t snd_sid;
271 uint16_t snd_flags;
272 uint32_t snd_ppid;
273 uint32_t snd_context;
274};
275
276struct bio_dgram_sctp_rcvinfo {
277 uint16_t rcv_sid;
278 uint16_t rcv_ssn;
279 uint16_t rcv_flags;
280 uint32_t rcv_ppid;
281 uint32_t rcv_tsn;
282 uint32_t rcv_cumtsn;
283 uint32_t rcv_context;
284};
285
286struct bio_dgram_sctp_prinfo {
287 uint16_t pr_policy;
288 uint32_t pr_value;
289};
290# endif
291
292/*
293 * #define BIO_CONN_get_param_hostname BIO_ctrl
294 */
295
296# define BIO_C_SET_CONNECT 100
297# define BIO_C_DO_STATE_MACHINE 101
298# define BIO_C_SET_NBIO 102
299/* # define BIO_C_SET_PROXY_PARAM 103 */
300# define BIO_C_SET_FD 104
301# define BIO_C_GET_FD 105
302# define BIO_C_SET_FILE_PTR 106
303# define BIO_C_GET_FILE_PTR 107
304# define BIO_C_SET_FILENAME 108
305# define BIO_C_SET_SSL 109
306# define BIO_C_GET_SSL 110
307# define BIO_C_SET_MD 111
308# define BIO_C_GET_MD 112
309# define BIO_C_GET_CIPHER_STATUS 113
310# define BIO_C_SET_BUF_MEM 114
311# define BIO_C_GET_BUF_MEM_PTR 115
312# define BIO_C_GET_BUFF_NUM_LINES 116
313# define BIO_C_SET_BUFF_SIZE 117
314# define BIO_C_SET_ACCEPT 118
315# define BIO_C_SSL_MODE 119
316# define BIO_C_GET_MD_CTX 120
317/* # define BIO_C_GET_PROXY_PARAM 121 */
318# define BIO_C_SET_BUFF_READ_DATA 122/* data to read first */
319# define BIO_C_GET_CONNECT 123
320# define BIO_C_GET_ACCEPT 124
321# define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125
322# define BIO_C_GET_SSL_NUM_RENEGOTIATES 126
323# define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127
324# define BIO_C_FILE_SEEK 128
325# define BIO_C_GET_CIPHER_CTX 129
326# define BIO_C_SET_BUF_MEM_EOF_RETURN 130/* return end of input
327 * value */
328# define BIO_C_SET_BIND_MODE 131
329# define BIO_C_GET_BIND_MODE 132
330# define BIO_C_FILE_TELL 133
331# define BIO_C_GET_SOCKS 134
332# define BIO_C_SET_SOCKS 135
333
334# define BIO_C_SET_WRITE_BUF_SIZE 136/* for BIO_s_bio */
335# define BIO_C_GET_WRITE_BUF_SIZE 137
336# define BIO_C_MAKE_BIO_PAIR 138
337# define BIO_C_DESTROY_BIO_PAIR 139
338# define BIO_C_GET_WRITE_GUARANTEE 140
339# define BIO_C_GET_READ_REQUEST 141
340# define BIO_C_SHUTDOWN_WR 142
341# define BIO_C_NREAD0 143
342# define BIO_C_NREAD 144
343# define BIO_C_NWRITE0 145
344# define BIO_C_NWRITE 146
345# define BIO_C_RESET_READ_REQUEST 147
346# define BIO_C_SET_MD_CTX 148
347
348# define BIO_C_SET_PREFIX 149
349# define BIO_C_GET_PREFIX 150
350# define BIO_C_SET_SUFFIX 151
351# define BIO_C_GET_SUFFIX 152
352
353# define BIO_C_SET_EX_ARG 153
354# define BIO_C_GET_EX_ARG 154
355
356# define BIO_C_SET_CONNECT_MODE 155
357
358# define BIO_set_app_data(s,arg) BIO_set_ex_data(s,0,arg)
359# define BIO_get_app_data(s) BIO_get_ex_data(s,0)
360
361# define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
362
363# ifndef OPENSSL_NO_SOCK
364/* IP families we support, for BIO_s_connect() and BIO_s_accept() */
365/* Note: the underlying operating system may not support some of them */
366# define BIO_FAMILY_IPV4 4
367# define BIO_FAMILY_IPV6 6
368# define BIO_FAMILY_IPANY 256
369
370/* BIO_s_connect() */
371# define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0, \
372 (char *)(name))
373# define BIO_set_conn_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,1, \
374 (char *)(port))
375# define BIO_set_conn_address(b,addr) BIO_ctrl(b,BIO_C_SET_CONNECT,2, \
376 (char *)(addr))
377# define BIO_set_conn_ip_family(b,f) BIO_int_ctrl(b,BIO_C_SET_CONNECT,3,f)
378# define BIO_get_conn_hostname(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0))
379# define BIO_get_conn_port(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1))
380# define BIO_get_conn_address(b) ((const BIO_ADDR *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2))
381# define BIO_get_conn_ip_family(b) BIO_ctrl(b,BIO_C_GET_CONNECT,3,NULL)
382# define BIO_set_conn_mode(b,n) BIO_ctrl(b,BIO_C_SET_CONNECT_MODE,(n),NULL)
383
384/* BIO_s_accept() */
385# define BIO_set_accept_name(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0, \
386 (char *)(name))
387# define BIO_set_accept_port(b,port) BIO_ctrl(b,BIO_C_SET_ACCEPT,1, \
388 (char *)(port))
389# define BIO_get_accept_name(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0))
390# define BIO_get_accept_port(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,1))
391# define BIO_get_peer_name(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,2))
392# define BIO_get_peer_port(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,3))
393/* #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */
394# define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(n)?(void *)"a":NULL)
395# define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,3, \
396 (char *)(bio))
397# define BIO_set_accept_ip_family(b,f) BIO_int_ctrl(b,BIO_C_SET_ACCEPT,4,f)
398# define BIO_get_accept_ip_family(b) BIO_ctrl(b,BIO_C_GET_ACCEPT,4,NULL)
399
400/* Aliases kept for backward compatibility */
401# define BIO_BIND_NORMAL 0
402# define BIO_BIND_REUSEADDR BIO_SOCK_REUSEADDR
403# define BIO_BIND_REUSEADDR_IF_UNUSED BIO_SOCK_REUSEADDR
404# define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL)
405# define BIO_get_bind_mode(b) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL)
406
407/* BIO_s_accept() and BIO_s_connect() */
408# define BIO_do_connect(b) BIO_do_handshake(b)
409# define BIO_do_accept(b) BIO_do_handshake(b)
410# endif /* OPENSSL_NO_SOCK */
411
412# define BIO_do_handshake(b) BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL)
413
414/* BIO_s_datagram(), BIO_s_fd(), BIO_s_socket(), BIO_s_accept() and BIO_s_connect() */
415# define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
416# define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)(c))
417
418/* BIO_s_file() */
419# define BIO_set_fp(b,fp,c) BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)(fp))
420# define BIO_get_fp(b,fpp) BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)(fpp))
421
422/* BIO_s_fd() and BIO_s_file() */
423# define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL)
424# define BIO_tell(b) (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL)
425
426/*
427 * name is cast to lose const, but might be better to route through a
428 * function so we can do it safely
429 */
430# ifdef CONST_STRICT
431/*
432 * If you are wondering why this isn't defined, its because CONST_STRICT is
433 * purely a compile-time kludge to allow const to be checked.
434 */
435int BIO_read_filename(BIO *b, const char *name);
436# else
437# define BIO_read_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \
438 BIO_CLOSE|BIO_FP_READ,(char *)(name))
439# endif
440# define BIO_write_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \
441 BIO_CLOSE|BIO_FP_WRITE,name)
442# define BIO_append_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \
443 BIO_CLOSE|BIO_FP_APPEND,name)
444# define BIO_rw_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \
445 BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
446
447/*
448 * WARNING WARNING, this ups the reference count on the read bio of the SSL
449 * structure. This is because the ssl read BIO is now pointed to by the
450 * next_bio field in the bio. So when you free the BIO, make sure you are
451 * doing a BIO_free_all() to catch the underlying BIO.
452 */
453# define BIO_set_ssl(b,ssl,c) BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)(ssl))
454# define BIO_get_ssl(b,sslp) BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)(sslp))
455# define BIO_set_ssl_mode(b,client) BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL)
456# define BIO_set_ssl_renegotiate_bytes(b,num) \
457 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL)
458# define BIO_get_num_renegotiates(b) \
459 BIO_ctrl(b,BIO_C_GET_SSL_NUM_RENEGOTIATES,0,NULL)
460# define BIO_set_ssl_renegotiate_timeout(b,seconds) \
461 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL)
462
463/* defined in evp.h */
464/* #define BIO_set_md(b,md) BIO_ctrl(b,BIO_C_SET_MD,1,(char *)(md)) */
465
466# define BIO_get_mem_data(b,pp) BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)(pp))
467# define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)(bm))
468# define BIO_get_mem_ptr(b,pp) BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0, \
469 (char *)(pp))
470# define BIO_set_mem_eof_return(b,v) \
471 BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL)
472
473/* For the BIO_f_buffer() type */
474# define BIO_get_buffer_num_lines(b) BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL)
475# define BIO_set_buffer_size(b,size) BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL)
476# define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0)
477# define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1)
478# define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf)
479
480/* Don't use the next one unless you know what you are doing :-) */
481# define BIO_dup_state(b,ret) BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret))
482
483# define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
484# define BIO_eof(b) (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL)
485# define BIO_set_close(b,c) (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL)
486# define BIO_get_close(b) (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL)
487# define BIO_pending(b) (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL)
488# define BIO_wpending(b) (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL)
489/* ...pending macros have inappropriate return type */
490size_t BIO_ctrl_pending(BIO *b);
491size_t BIO_ctrl_wpending(BIO *b);
492# define BIO_flush(b) (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL)
493# define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0, \
494 cbp)
495# define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,cb)
496
497/* For the BIO_f_buffer() type */
498# define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL)
499# define BIO_buffer_peek(b,s,l) BIO_ctrl(b,BIO_CTRL_PEEK,(l),(s))
500
501/* For BIO_s_bio() */
502# define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
503# define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
504# define BIO_make_bio_pair(b1,b2) (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
505# define BIO_destroy_bio_pair(b) (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
506# define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 0, NULL)
507/* macros with inappropriate type -- but ...pending macros use int too: */
508# define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
509# define BIO_get_read_request(b) (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
510size_t BIO_ctrl_get_write_guarantee(BIO *b);
511size_t BIO_ctrl_get_read_request(BIO *b);
512int BIO_ctrl_reset_read_request(BIO *b);
513
514/* ctrl macros for dgram */
515# define BIO_ctrl_dgram_connect(b,peer) \
516 (int)BIO_ctrl(b,BIO_CTRL_DGRAM_CONNECT,0, (char *)(peer))
517# define BIO_ctrl_set_connected(b,peer) \
518 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_CONNECTED, 0, (char *)(peer))
519# define BIO_dgram_recv_timedout(b) \
520 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP, 0, NULL)
521# define BIO_dgram_send_timedout(b) \
522 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP, 0, NULL)
523# define BIO_dgram_get_peer(b,peer) \
524 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_PEER, 0, (char *)(peer))
525# define BIO_dgram_set_peer(b,peer) \
526 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, (char *)(peer))
527# define BIO_dgram_get_mtu_overhead(b) \
528 (unsigned int)BIO_ctrl((b), BIO_CTRL_DGRAM_GET_MTU_OVERHEAD, 0, NULL)
529
530#define BIO_get_ex_new_index(l, p, newf, dupf, freef) \
531 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, l, p, newf, dupf, freef)
532int BIO_set_ex_data(BIO *bio, int idx, void *data);
533void *BIO_get_ex_data(BIO *bio, int idx);
534uint64_t BIO_number_read(BIO *bio);
535uint64_t BIO_number_written(BIO *bio);
536
537/* For BIO_f_asn1() */
538int BIO_asn1_set_prefix(BIO *b, asn1_ps_func *prefix,
539 asn1_ps_func *prefix_free);
540int BIO_asn1_get_prefix(BIO *b, asn1_ps_func **pprefix,
541 asn1_ps_func **pprefix_free);
542int BIO_asn1_set_suffix(BIO *b, asn1_ps_func *suffix,
543 asn1_ps_func *suffix_free);
544int BIO_asn1_get_suffix(BIO *b, asn1_ps_func **psuffix,
545 asn1_ps_func **psuffix_free);
546
547const BIO_METHOD *BIO_s_file(void);
548BIO *BIO_new_file(const char *filename, const char *mode);
549# ifndef OPENSSL_NO_STDIO
550BIO *BIO_new_fp(FILE *stream, int close_flag);
551# endif
552BIO *BIO_new(const BIO_METHOD *type);
553int BIO_free(BIO *a);
554void BIO_set_data(BIO *a, void *ptr);
555void *BIO_get_data(BIO *a);
556void BIO_set_init(BIO *a, int init);
557int BIO_get_init(BIO *a);
558void BIO_set_shutdown(BIO *a, int shut);
559int BIO_get_shutdown(BIO *a);
560void BIO_vfree(BIO *a);
561int BIO_up_ref(BIO *a);
562int BIO_read(BIO *b, void *data, int dlen);
563int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes);
564int BIO_gets(BIO *bp, char *buf, int size);
565int BIO_write(BIO *b, const void *data, int dlen);
566int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written);
567int BIO_puts(BIO *bp, const char *buf);
568int BIO_indent(BIO *b, int indent, int max);
569long BIO_ctrl(BIO *bp, int cmd, long larg, void *parg);
570long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp);
571void *BIO_ptr_ctrl(BIO *bp, int cmd, long larg);
572long BIO_int_ctrl(BIO *bp, int cmd, long larg, int iarg);
573BIO *BIO_push(BIO *b, BIO *append);
574BIO *BIO_pop(BIO *b);
575void BIO_free_all(BIO *a);
576BIO *BIO_find_type(BIO *b, int bio_type);
577BIO *BIO_next(BIO *b);
578void BIO_set_next(BIO *b, BIO *next);
579BIO *BIO_get_retry_BIO(BIO *bio, int *reason);
580int BIO_get_retry_reason(BIO *bio);
581void BIO_set_retry_reason(BIO *bio, int reason);
582BIO *BIO_dup_chain(BIO *in);
583
584int BIO_nread0(BIO *bio, char **buf);
585int BIO_nread(BIO *bio, char **buf, int num);
586int BIO_nwrite0(BIO *bio, char **buf);
587int BIO_nwrite(BIO *bio, char **buf, int num);
588
589long BIO_debug_callback(BIO *bio, int cmd, const char *argp, int argi,
590 long argl, long ret);
591
592const BIO_METHOD *BIO_s_mem(void);
593const BIO_METHOD *BIO_s_secmem(void);
594BIO *BIO_new_mem_buf(const void *buf, int len);
595# ifndef OPENSSL_NO_SOCK
596const BIO_METHOD *BIO_s_socket(void);
597const BIO_METHOD *BIO_s_connect(void);
598const BIO_METHOD *BIO_s_accept(void);
599# endif
600const BIO_METHOD *BIO_s_fd(void);
601const BIO_METHOD *BIO_s_log(void);
602const BIO_METHOD *BIO_s_bio(void);
603const BIO_METHOD *BIO_s_null(void);
604const BIO_METHOD *BIO_f_null(void);
605const BIO_METHOD *BIO_f_buffer(void);
606const BIO_METHOD *BIO_f_linebuffer(void);
607const BIO_METHOD *BIO_f_nbio_test(void);
608# ifndef OPENSSL_NO_DGRAM
609const BIO_METHOD *BIO_s_datagram(void);
610int BIO_dgram_non_fatal_error(int error);
611BIO *BIO_new_dgram(int fd, int close_flag);
612# ifndef OPENSSL_NO_SCTP
613const BIO_METHOD *BIO_s_datagram_sctp(void);
614BIO *BIO_new_dgram_sctp(int fd, int close_flag);
615int BIO_dgram_is_sctp(BIO *bio);
616int BIO_dgram_sctp_notification_cb(BIO *b,
617 void (*handle_notifications) (BIO *bio,
618 void *context,
619 void *buf),
620 void *context);
621int BIO_dgram_sctp_wait_for_dry(BIO *b);
622int BIO_dgram_sctp_msg_waiting(BIO *b);
623# endif
624# endif
625
626# ifndef OPENSSL_NO_SOCK
627int BIO_sock_should_retry(int i);
628int BIO_sock_non_fatal_error(int error);
629# endif
630
631int BIO_fd_should_retry(int i);
632int BIO_fd_non_fatal_error(int error);
633int BIO_dump_cb(int (*cb) (const void *data, size_t len, void *u),
634 void *u, const char *s, int len);
635int BIO_dump_indent_cb(int (*cb) (const void *data, size_t len, void *u),
636 void *u, const char *s, int len, int indent);
637int BIO_dump(BIO *b, const char *bytes, int len);
638int BIO_dump_indent(BIO *b, const char *bytes, int len, int indent);
639# ifndef OPENSSL_NO_STDIO
640int BIO_dump_fp(FILE *fp, const char *s, int len);
641int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent);
642# endif
643int BIO_hex_string(BIO *out, int indent, int width, unsigned char *data,
644 int datalen);
645
646# ifndef OPENSSL_NO_SOCK
647BIO_ADDR *BIO_ADDR_new(void);
648int BIO_ADDR_rawmake(BIO_ADDR *ap, int family,
649 const void *where, size_t wherelen, unsigned short port);
650void BIO_ADDR_free(BIO_ADDR *);
651void BIO_ADDR_clear(BIO_ADDR *ap);
652int BIO_ADDR_family(const BIO_ADDR *ap);
653int BIO_ADDR_rawaddress(const BIO_ADDR *ap, void *p, size_t *l);
654unsigned short BIO_ADDR_rawport(const BIO_ADDR *ap);
655char *BIO_ADDR_hostname_string(const BIO_ADDR *ap, int numeric);
656char *BIO_ADDR_service_string(const BIO_ADDR *ap, int numeric);
657char *BIO_ADDR_path_string(const BIO_ADDR *ap);
658
659const BIO_ADDRINFO *BIO_ADDRINFO_next(const BIO_ADDRINFO *bai);
660int BIO_ADDRINFO_family(const BIO_ADDRINFO *bai);
661int BIO_ADDRINFO_socktype(const BIO_ADDRINFO *bai);
662int BIO_ADDRINFO_protocol(const BIO_ADDRINFO *bai);
663const BIO_ADDR *BIO_ADDRINFO_address(const BIO_ADDRINFO *bai);
664void BIO_ADDRINFO_free(BIO_ADDRINFO *bai);
665
666enum BIO_hostserv_priorities {
667 BIO_PARSE_PRIO_HOST, BIO_PARSE_PRIO_SERV
668};
669int BIO_parse_hostserv(const char *hostserv, char **host, char **service,
670 enum BIO_hostserv_priorities hostserv_prio);
671enum BIO_lookup_type {
672 BIO_LOOKUP_CLIENT, BIO_LOOKUP_SERVER
673};
674int BIO_lookup(const char *host, const char *service,
675 enum BIO_lookup_type lookup_type,
676 int family, int socktype, BIO_ADDRINFO **res);
677int BIO_lookup_ex(const char *host, const char *service,
678 int lookup_type, int family, int socktype, int protocol,
679 BIO_ADDRINFO **res);
680int BIO_sock_error(int sock);
681int BIO_socket_ioctl(int fd, long type, void *arg);
682int BIO_socket_nbio(int fd, int mode);
683int BIO_sock_init(void);
684# if OPENSSL_API_COMPAT < 0x10100000L
685# define BIO_sock_cleanup() while(0) continue
686# endif
687int BIO_set_tcp_ndelay(int sock, int turn_on);
688
689DEPRECATEDIN_1_1_0(struct hostent *BIO_gethostbyname(const char *name))
690DEPRECATEDIN_1_1_0(int BIO_get_port(const char *str, unsigned short *port_ptr))
691DEPRECATEDIN_1_1_0(int BIO_get_host_ip(const char *str, unsigned char *ip))
692DEPRECATEDIN_1_1_0(int BIO_get_accept_socket(char *host_port, int mode))
693DEPRECATEDIN_1_1_0(int BIO_accept(int sock, char **ip_port))
694
695union BIO_sock_info_u {
696 BIO_ADDR *addr;
697};
698enum BIO_sock_info_type {
699 BIO_SOCK_INFO_ADDRESS
700};
701int BIO_sock_info(int sock,
702 enum BIO_sock_info_type type, union BIO_sock_info_u *info);
703
704# define BIO_SOCK_REUSEADDR 0x01
705# define BIO_SOCK_V6_ONLY 0x02
706# define BIO_SOCK_KEEPALIVE 0x04
707# define BIO_SOCK_NONBLOCK 0x08
708# define BIO_SOCK_NODELAY 0x10
709
710int BIO_socket(int domain, int socktype, int protocol, int options);
711int BIO_connect(int sock, const BIO_ADDR *addr, int options);
712int BIO_bind(int sock, const BIO_ADDR *addr, int options);
713int BIO_listen(int sock, const BIO_ADDR *addr, int options);
714int BIO_accept_ex(int accept_sock, BIO_ADDR *addr, int options);
715int BIO_closesocket(int sock);
716
717BIO *BIO_new_socket(int sock, int close_flag);
718BIO *BIO_new_connect(const char *host_port);
719BIO *BIO_new_accept(const char *host_port);
720# endif /* OPENSSL_NO_SOCK*/
721
722BIO *BIO_new_fd(int fd, int close_flag);
723
724int BIO_new_bio_pair(BIO **bio1, size_t writebuf1,
725 BIO **bio2, size_t writebuf2);
726/*
727 * If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints.
728 * Otherwise returns 0 and sets *bio1 and *bio2 to NULL. Size 0 uses default
729 * value.
730 */
731
732void BIO_copy_next_retry(BIO *b);
733
734/*
735 * long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);
736 */
737
738# define ossl_bio__attr__(x)
739# if defined(__GNUC__) && defined(__STDC_VERSION__) \
740 && !defined(__APPLE__)
741 /*
742 * Because we support the 'z' modifier, which made its appearance in C99,
743 * we can't use __attribute__ with pre C99 dialects.
744 */
745# if __STDC_VERSION__ >= 199901L
746# undef ossl_bio__attr__
747# define ossl_bio__attr__ __attribute__
748# if __GNUC__*10 + __GNUC_MINOR__ >= 44
749# define ossl_bio__printf__ __gnu_printf__
750# else
751# define ossl_bio__printf__ __printf__
752# endif
753# endif
754# endif
755int BIO_printf(BIO *bio, const char *format, ...)
756ossl_bio__attr__((__format__(ossl_bio__printf__, 2, 3)));
757int BIO_vprintf(BIO *bio, const char *format, va_list args)
758ossl_bio__attr__((__format__(ossl_bio__printf__, 2, 0)));
759int BIO_snprintf(char *buf, size_t n, const char *format, ...)
760ossl_bio__attr__((__format__(ossl_bio__printf__, 3, 4)));
761int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args)
762ossl_bio__attr__((__format__(ossl_bio__printf__, 3, 0)));
763# undef ossl_bio__attr__
764# undef ossl_bio__printf__
765
766
767BIO_METHOD *BIO_meth_new(int type, const char *name);
768void BIO_meth_free(BIO_METHOD *biom);
769int (*BIO_meth_get_write(const BIO_METHOD *biom)) (BIO *, const char *, int);
770int (*BIO_meth_get_write_ex(const BIO_METHOD *biom)) (BIO *, const char *, size_t,
771 size_t *);
772int BIO_meth_set_write(BIO_METHOD *biom,
773 int (*write) (BIO *, const char *, int));
774int BIO_meth_set_write_ex(BIO_METHOD *biom,
775 int (*bwrite) (BIO *, const char *, size_t, size_t *));
776int (*BIO_meth_get_read(const BIO_METHOD *biom)) (BIO *, char *, int);
777int (*BIO_meth_get_read_ex(const BIO_METHOD *biom)) (BIO *, char *, size_t, size_t *);
778int BIO_meth_set_read(BIO_METHOD *biom,
779 int (*read) (BIO *, char *, int));
780int BIO_meth_set_read_ex(BIO_METHOD *biom,
781 int (*bread) (BIO *, char *, size_t, size_t *));
782int (*BIO_meth_get_puts(const BIO_METHOD *biom)) (BIO *, const char *);
783int BIO_meth_set_puts(BIO_METHOD *biom,
784 int (*puts) (BIO *, const char *));
785int (*BIO_meth_get_gets(const BIO_METHOD *biom)) (BIO *, char *, int);
786int BIO_meth_set_gets(BIO_METHOD *biom,
787 int (*gets) (BIO *, char *, int));
788long (*BIO_meth_get_ctrl(const BIO_METHOD *biom)) (BIO *, int, long, void *);
789int BIO_meth_set_ctrl(BIO_METHOD *biom,
790 long (*ctrl) (BIO *, int, long, void *));
791int (*BIO_meth_get_create(const BIO_METHOD *bion)) (BIO *);
792int BIO_meth_set_create(BIO_METHOD *biom, int (*create) (BIO *));
793int (*BIO_meth_get_destroy(const BIO_METHOD *biom)) (BIO *);
794int BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy) (BIO *));
795long (*BIO_meth_get_callback_ctrl(const BIO_METHOD *biom))
796 (BIO *, int, BIO_info_cb *);
797int BIO_meth_set_callback_ctrl(BIO_METHOD *biom,
798 long (*callback_ctrl) (BIO *, int,
799 BIO_info_cb *));
800
801# ifdef __cplusplus
802}
803# endif
804#endif
805

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