1 /* 2 * Copyright 1995-2020 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 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 /* There are the classes of BIOs */ 28 # define BIO_TYPE_DESCRIPTOR 0x0100 /* socket, fd, connect or accept */ 29 # define BIO_TYPE_FILTER 0x0200 30 # define BIO_TYPE_SOURCE_SINK 0x0400 31 32 /* These are the 'types' of BIOs */ 33 # define BIO_TYPE_NONE 0 34 # define BIO_TYPE_MEM ( 1|BIO_TYPE_SOURCE_SINK) 35 # define BIO_TYPE_FILE ( 2|BIO_TYPE_SOURCE_SINK) 36 37 # define BIO_TYPE_FD ( 4|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR) 38 # define BIO_TYPE_SOCKET ( 5|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR) 39 # define BIO_TYPE_NULL ( 6|BIO_TYPE_SOURCE_SINK) 40 # define BIO_TYPE_SSL ( 7|BIO_TYPE_FILTER) 41 # define BIO_TYPE_MD ( 8|BIO_TYPE_FILTER) 42 # define BIO_TYPE_BUFFER ( 9|BIO_TYPE_FILTER) 43 # define BIO_TYPE_CIPHER (10|BIO_TYPE_FILTER) 44 # define BIO_TYPE_BASE64 (11|BIO_TYPE_FILTER) 45 # define BIO_TYPE_CONNECT (12|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR) 46 # define BIO_TYPE_ACCEPT (13|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR) 47 48 # define BIO_TYPE_NBIO_TEST (16|BIO_TYPE_FILTER)/* server proxy BIO */ 49 # define BIO_TYPE_NULL_FILTER (17|BIO_TYPE_FILTER) 50 # define BIO_TYPE_BIO (19|BIO_TYPE_SOURCE_SINK)/* half a BIO pair */ 51 # define BIO_TYPE_LINEBUFFER (20|BIO_TYPE_FILTER) 52 # define BIO_TYPE_DGRAM (21|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR) 53 # define BIO_TYPE_ASN1 (22|BIO_TYPE_FILTER) 54 # define BIO_TYPE_COMP (23|BIO_TYPE_FILTER) 55 # ifndef OPENSSL_NO_SCTP 56 # define BIO_TYPE_DGRAM_SCTP (24|BIO_TYPE_SOURCE_SINK|BIO_TYPE_DESCRIPTOR) 57 # endif 58 59 #define BIO_TYPE_START 128 60 61 /* 62 * BIO_FILENAME_READ|BIO_CLOSE to open or close on free. 63 * BIO_set_fp(in,stdin,BIO_NOCLOSE); 64 */ 65 # define BIO_NOCLOSE 0x00 66 # define BIO_CLOSE 0x01 67 68 /* 69 * These are used in the following macros and are passed to BIO_ctrl() 70 */ 71 # define BIO_CTRL_RESET 1/* opt - rewind/zero etc */ 72 # define BIO_CTRL_EOF 2/* opt - are we at the eof */ 73 # define BIO_CTRL_INFO 3/* opt - extra tit-bits */ 74 # define BIO_CTRL_SET 4/* man - set the 'IO' type */ 75 # define BIO_CTRL_GET 5/* man - get the 'IO' type */ 76 # define BIO_CTRL_PUSH 6/* opt - internal, used to signify change */ 77 # define BIO_CTRL_POP 7/* opt - internal, used to signify change */ 78 # define BIO_CTRL_GET_CLOSE 8/* man - set the 'close' on free */ 79 # define BIO_CTRL_SET_CLOSE 9/* man - set the 'close' on free */ 80 # define BIO_CTRL_PENDING 10/* opt - is their more data buffered */ 81 # define BIO_CTRL_FLUSH 11/* opt - 'flush' buffered output */ 82 # define BIO_CTRL_DUP 12/* man - extra stuff for 'duped' BIO */ 83 # define BIO_CTRL_WPENDING 13/* opt - number of bytes still to write */ 84 # define BIO_CTRL_SET_CALLBACK 14/* opt - set callback function */ 85 # define BIO_CTRL_GET_CALLBACK 15/* opt - set callback function */ 86 87 # define BIO_CTRL_PEEK 29/* BIO_f_buffer special */ 88 # define BIO_CTRL_SET_FILENAME 30/* BIO_s_file special */ 89 90 /* dgram BIO stuff */ 91 # define BIO_CTRL_DGRAM_CONNECT 31/* BIO dgram special */ 92 # define BIO_CTRL_DGRAM_SET_CONNECTED 32/* allow for an externally connected 93 * socket to be passed in */ 94 # define BIO_CTRL_DGRAM_SET_RECV_TIMEOUT 33/* setsockopt, essentially */ 95 # define BIO_CTRL_DGRAM_GET_RECV_TIMEOUT 34/* getsockopt, essentially */ 96 # define BIO_CTRL_DGRAM_SET_SEND_TIMEOUT 35/* setsockopt, essentially */ 97 # define BIO_CTRL_DGRAM_GET_SEND_TIMEOUT 36/* getsockopt, essentially */ 98 99 # define BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP 37/* flag whether the last */ 100 # define BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP 38/* I/O operation tiemd out */ 101 102 /* #ifdef IP_MTU_DISCOVER */ 103 # define BIO_CTRL_DGRAM_MTU_DISCOVER 39/* set DF bit on egress packets */ 104 /* #endif */ 105 106 # define BIO_CTRL_DGRAM_QUERY_MTU 40/* as kernel for current MTU */ 107 # define BIO_CTRL_DGRAM_GET_FALLBACK_MTU 47 108 # define BIO_CTRL_DGRAM_GET_MTU 41/* get cached value for MTU */ 109 # define BIO_CTRL_DGRAM_SET_MTU 42/* set cached value for MTU. 110 * want to use this if asking 111 * the kernel fails */ 112 113 # define BIO_CTRL_DGRAM_MTU_EXCEEDED 43/* check whether the MTU was 114 * exceed in the previous write 115 * operation */ 116 117 # define BIO_CTRL_DGRAM_GET_PEER 46 118 # define BIO_CTRL_DGRAM_SET_PEER 44/* Destination for the data */ 119 120 # define BIO_CTRL_DGRAM_SET_NEXT_TIMEOUT 45/* Next DTLS handshake timeout 121 * to adjust socket timeouts */ 122 # define BIO_CTRL_DGRAM_SET_DONT_FRAG 48 123 124 # define BIO_CTRL_DGRAM_GET_MTU_OVERHEAD 49 125 126 /* Deliberately outside of OPENSSL_NO_SCTP - used in bss_dgram.c */ 127 # define BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE 50 128 # ifndef OPENSSL_NO_SCTP 129 /* SCTP stuff */ 130 # define BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY 51 131 # define BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY 52 132 # define BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD 53 133 # define BIO_CTRL_DGRAM_SCTP_GET_SNDINFO 60 134 # define BIO_CTRL_DGRAM_SCTP_SET_SNDINFO 61 135 # define BIO_CTRL_DGRAM_SCTP_GET_RCVINFO 62 136 # define BIO_CTRL_DGRAM_SCTP_SET_RCVINFO 63 137 # define BIO_CTRL_DGRAM_SCTP_GET_PRINFO 64 138 # define BIO_CTRL_DGRAM_SCTP_SET_PRINFO 65 139 # define BIO_CTRL_DGRAM_SCTP_SAVE_SHUTDOWN 70 140 # endif 141 142 # define BIO_CTRL_DGRAM_SET_PEEK_MODE 71 143 144 /* 145 * internal BIO see include/internal/bio.h: 146 * # define BIO_CTRL_SET_KTLS_SEND 72 147 * # define BIO_CTRL_SET_KTLS_SEND_CTRL_MSG 74 148 * # define BIO_CTRL_CLEAR_KTLS_CTRL_MSG 75 149 */ 150 151 # define BIO_CTRL_GET_KTLS_SEND 73 152 # define BIO_CTRL_GET_KTLS_RECV 76 153 154 # ifndef OPENSSL_NO_KTLS 155 # define BIO_get_ktls_send(b) \ 156 BIO_ctrl(b, BIO_CTRL_GET_KTLS_SEND, 0, NULL) 157 # define BIO_get_ktls_recv(b) \ 158 BIO_ctrl(b, BIO_CTRL_GET_KTLS_RECV, 0, NULL) 159 # else 160 # define BIO_get_ktls_send(b) (0) 161 # define BIO_get_ktls_recv(b) (0) 162 # endif 163 164 /* modifiers */ 165 # define BIO_FP_READ 0x02 166 # define BIO_FP_WRITE 0x04 167 # define BIO_FP_APPEND 0x08 168 # define BIO_FP_TEXT 0x10 169 170 # define BIO_FLAGS_READ 0x01 171 # define BIO_FLAGS_WRITE 0x02 172 # define BIO_FLAGS_IO_SPECIAL 0x04 173 # define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL) 174 # define BIO_FLAGS_SHOULD_RETRY 0x08 175 # ifndef BIO_FLAGS_UPLINK 176 /* 177 * "UPLINK" flag denotes file descriptors provided by application. It 178 * defaults to 0, as most platforms don't require UPLINK interface. 179 */ 180 # define BIO_FLAGS_UPLINK 0 181 # endif 182 183 # define BIO_FLAGS_BASE64_NO_NL 0x100 184 185 /* 186 * This is used with memory BIOs: 187 * BIO_FLAGS_MEM_RDONLY means we shouldn't free up or change the data in any way; 188 * BIO_FLAGS_NONCLEAR_RST means we shouldn't clear data on reset. 189 */ 190 # define BIO_FLAGS_MEM_RDONLY 0x200 191 # define BIO_FLAGS_NONCLEAR_RST 0x400 192 # define BIO_FLAGS_IN_EOF 0x800 193 194 /* the BIO FLAGS values 0x1000 to 0x4000 are reserved for internal KTLS flags */ 195 196 typedef union bio_addr_st BIO_ADDR; 197 typedef struct bio_addrinfo_st BIO_ADDRINFO; 198 199 int BIO_get_new_index(void); 200 void BIO_set_flags(BIO *b, int flags); 201 int BIO_test_flags(const BIO *b, int flags); 202 void BIO_clear_flags(BIO *b, int flags); 203 204 # define BIO_get_flags(b) BIO_test_flags(b, ~(0x0)) 205 # define BIO_set_retry_special(b) \ 206 BIO_set_flags(b, (BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY)) 207 # define BIO_set_retry_read(b) \ 208 BIO_set_flags(b, (BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY)) 209 # define BIO_set_retry_write(b) \ 210 BIO_set_flags(b, (BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY)) 211 212 /* These are normally used internally in BIOs */ 213 # define BIO_clear_retry_flags(b) \ 214 BIO_clear_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY)) 215 # define BIO_get_retry_flags(b) \ 216 BIO_test_flags(b, (BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY)) 217 218 /* These should be used by the application to tell why we should retry */ 219 # define BIO_should_read(a) BIO_test_flags(a, BIO_FLAGS_READ) 220 # define BIO_should_write(a) BIO_test_flags(a, BIO_FLAGS_WRITE) 221 # define BIO_should_io_special(a) BIO_test_flags(a, BIO_FLAGS_IO_SPECIAL) 222 # define BIO_retry_type(a) BIO_test_flags(a, BIO_FLAGS_RWS) 223 # define BIO_should_retry(a) BIO_test_flags(a, BIO_FLAGS_SHOULD_RETRY) 224 225 /* 226 * The next three are used in conjunction with the BIO_should_io_special() 227 * condition. After this returns true, BIO *BIO_get_retry_BIO(BIO *bio, int 228 * *reason); will walk the BIO stack and return the 'reason' for the special 229 * and the offending BIO. Given a BIO, BIO_get_retry_reason(bio) will return 230 * the code. 231 */ 232 /* 233 * Returned from the SSL bio when the certificate retrieval code had an error 234 */ 235 # define BIO_RR_SSL_X509_LOOKUP 0x01 236 /* Returned from the connect BIO when a connect would have blocked */ 237 # define BIO_RR_CONNECT 0x02 238 /* Returned from the accept BIO when an accept would have blocked */ 239 # define BIO_RR_ACCEPT 0x03 240 241 /* These are passed by the BIO callback */ 242 # define BIO_CB_FREE 0x01 243 # define BIO_CB_READ 0x02 244 # define BIO_CB_WRITE 0x03 245 # define BIO_CB_PUTS 0x04 246 # define BIO_CB_GETS 0x05 247 # define BIO_CB_CTRL 0x06 248 249 /* 250 * The callback is called before and after the underling operation, The 251 * BIO_CB_RETURN flag indicates if it is after the call 252 */ 253 # define BIO_CB_RETURN 0x80 254 # define BIO_CB_return(a) ((a)|BIO_CB_RETURN) 255 # define BIO_cb_pre(a) (!((a)&BIO_CB_RETURN)) 256 # define BIO_cb_post(a) ((a)&BIO_CB_RETURN) 257 258 typedef long (*BIO_callback_fn)(BIO *b, int oper, const char *argp, int argi, 259 long argl, long ret); 260 typedef long (*BIO_callback_fn_ex)(BIO *b, int oper, const char *argp, 261 size_t len, int argi, 262 long argl, int ret, size_t *processed); 263 BIO_callback_fn BIO_get_callback(const BIO *b); 264 void BIO_set_callback(BIO *b, BIO_callback_fn callback); 265 266 BIO_callback_fn_ex BIO_get_callback_ex(const BIO *b); 267 void BIO_set_callback_ex(BIO *b, BIO_callback_fn_ex callback); 268 269 char *BIO_get_callback_arg(const BIO *b); 270 void BIO_set_callback_arg(BIO *b, char *arg); 271 272 typedef struct bio_method_st BIO_METHOD; 273 274 const char *BIO_method_name(const BIO *b); 275 int BIO_method_type(const BIO *b); 276 277 typedef int BIO_info_cb(BIO *, int, int); 278 typedef BIO_info_cb bio_info_cb; /* backward compatibility */ 279 280 DEFINE_STACK_OF(BIO) 281 282 /* Prefix and suffix callback in ASN1 BIO */ 283 typedef int asn1_ps_func (BIO *b, unsigned char **pbuf, int *plen, 284 void *parg); 285 286 # ifndef OPENSSL_NO_SCTP 287 /* SCTP parameter structs */ 288 struct bio_dgram_sctp_sndinfo { 289 uint16_t snd_sid; 290 uint16_t snd_flags; 291 uint32_t snd_ppid; 292 uint32_t snd_context; 293 }; 294 295 struct bio_dgram_sctp_rcvinfo { 296 uint16_t rcv_sid; 297 uint16_t rcv_ssn; 298 uint16_t rcv_flags; 299 uint32_t rcv_ppid; 300 uint32_t rcv_tsn; 301 uint32_t rcv_cumtsn; 302 uint32_t rcv_context; 303 }; 304 305 struct bio_dgram_sctp_prinfo { 306 uint16_t pr_policy; 307 uint32_t pr_value; 308 }; 309 # endif 310 311 /* 312 * #define BIO_CONN_get_param_hostname BIO_ctrl 313 */ 314 315 # define BIO_C_SET_CONNECT 100 316 # define BIO_C_DO_STATE_MACHINE 101 317 # define BIO_C_SET_NBIO 102 318 /* # define BIO_C_SET_PROXY_PARAM 103 */ 319 # define BIO_C_SET_FD 104 320 # define BIO_C_GET_FD 105 321 # define BIO_C_SET_FILE_PTR 106 322 # define BIO_C_GET_FILE_PTR 107 323 # define BIO_C_SET_FILENAME 108 324 # define BIO_C_SET_SSL 109 325 # define BIO_C_GET_SSL 110 326 # define BIO_C_SET_MD 111 327 # define BIO_C_GET_MD 112 328 # define BIO_C_GET_CIPHER_STATUS 113 329 # define BIO_C_SET_BUF_MEM 114 330 # define BIO_C_GET_BUF_MEM_PTR 115 331 # define BIO_C_GET_BUFF_NUM_LINES 116 332 # define BIO_C_SET_BUFF_SIZE 117 333 # define BIO_C_SET_ACCEPT 118 334 # define BIO_C_SSL_MODE 119 335 # define BIO_C_GET_MD_CTX 120 336 /* # define BIO_C_GET_PROXY_PARAM 121 */ 337 # define BIO_C_SET_BUFF_READ_DATA 122/* data to read first */ 338 # define BIO_C_GET_CONNECT 123 339 # define BIO_C_GET_ACCEPT 124 340 # define BIO_C_SET_SSL_RENEGOTIATE_BYTES 125 341 # define BIO_C_GET_SSL_NUM_RENEGOTIATES 126 342 # define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT 127 343 # define BIO_C_FILE_SEEK 128 344 # define BIO_C_GET_CIPHER_CTX 129 345 # define BIO_C_SET_BUF_MEM_EOF_RETURN 130/* return end of input 346 * value */ 347 # define BIO_C_SET_BIND_MODE 131 348 # define BIO_C_GET_BIND_MODE 132 349 # define BIO_C_FILE_TELL 133 350 # define BIO_C_GET_SOCKS 134 351 # define BIO_C_SET_SOCKS 135 352 353 # define BIO_C_SET_WRITE_BUF_SIZE 136/* for BIO_s_bio */ 354 # define BIO_C_GET_WRITE_BUF_SIZE 137 355 # define BIO_C_MAKE_BIO_PAIR 138 356 # define BIO_C_DESTROY_BIO_PAIR 139 357 # define BIO_C_GET_WRITE_GUARANTEE 140 358 # define BIO_C_GET_READ_REQUEST 141 359 # define BIO_C_SHUTDOWN_WR 142 360 # define BIO_C_NREAD0 143 361 # define BIO_C_NREAD 144 362 # define BIO_C_NWRITE0 145 363 # define BIO_C_NWRITE 146 364 # define BIO_C_RESET_READ_REQUEST 147 365 # define BIO_C_SET_MD_CTX 148 366 367 # define BIO_C_SET_PREFIX 149 368 # define BIO_C_GET_PREFIX 150 369 # define BIO_C_SET_SUFFIX 151 370 # define BIO_C_GET_SUFFIX 152 371 372 # define BIO_C_SET_EX_ARG 153 373 # define BIO_C_GET_EX_ARG 154 374 375 # define BIO_C_SET_CONNECT_MODE 155 376 377 # define BIO_set_app_data(s,arg) BIO_set_ex_data(s,0,arg) 378 # define BIO_get_app_data(s) BIO_get_ex_data(s,0) 379 380 # define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) 381 382 # ifndef OPENSSL_NO_SOCK 383 /* IP families we support, for BIO_s_connect() and BIO_s_accept() */ 384 /* Note: the underlying operating system may not support some of them */ 385 # define BIO_FAMILY_IPV4 4 386 # define BIO_FAMILY_IPV6 6 387 # define BIO_FAMILY_IPANY 256 388 389 /* BIO_s_connect() */ 390 # define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0, \ 391 (char *)(name)) 392 # define BIO_set_conn_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,1, \ 393 (char *)(port)) 394 # define BIO_set_conn_address(b,addr) BIO_ctrl(b,BIO_C_SET_CONNECT,2, \ 395 (char *)(addr)) 396 # define BIO_set_conn_ip_family(b,f) BIO_int_ctrl(b,BIO_C_SET_CONNECT,3,f) 397 # define BIO_get_conn_hostname(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0)) 398 # define BIO_get_conn_port(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1)) 399 # define BIO_get_conn_address(b) ((const BIO_ADDR *)BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2)) 400 # define BIO_get_conn_ip_family(b) BIO_ctrl(b,BIO_C_GET_CONNECT,3,NULL) 401 # define BIO_set_conn_mode(b,n) BIO_ctrl(b,BIO_C_SET_CONNECT_MODE,(n),NULL) 402 403 /* BIO_s_accept() */ 404 # define BIO_set_accept_name(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0, \ 405 (char *)(name)) 406 # define BIO_set_accept_port(b,port) BIO_ctrl(b,BIO_C_SET_ACCEPT,1, \ 407 (char *)(port)) 408 # define BIO_get_accept_name(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0)) 409 # define BIO_get_accept_port(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,1)) 410 # define BIO_get_peer_name(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,2)) 411 # define BIO_get_peer_port(b) ((const char *)BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,3)) 412 /* #define BIO_set_nbio(b,n) BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */ 413 # define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(n)?(void *)"a":NULL) 414 # define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,3, \ 415 (char *)(bio)) 416 # define BIO_set_accept_ip_family(b,f) BIO_int_ctrl(b,BIO_C_SET_ACCEPT,4,f) 417 # define BIO_get_accept_ip_family(b) BIO_ctrl(b,BIO_C_GET_ACCEPT,4,NULL) 418 419 /* Aliases kept for backward compatibility */ 420 # define BIO_BIND_NORMAL 0 421 # define BIO_BIND_REUSEADDR BIO_SOCK_REUSEADDR 422 # define BIO_BIND_REUSEADDR_IF_UNUSED BIO_SOCK_REUSEADDR 423 # define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL) 424 # define BIO_get_bind_mode(b) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL) 425 426 /* BIO_s_accept() and BIO_s_connect() */ 427 # define BIO_do_connect(b) BIO_do_handshake(b) 428 # define BIO_do_accept(b) BIO_do_handshake(b) 429 # endif /* OPENSSL_NO_SOCK */ 430 431 # define BIO_do_handshake(b) BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL) 432 433 /* BIO_s_datagram(), BIO_s_fd(), BIO_s_socket(), BIO_s_accept() and BIO_s_connect() */ 434 # define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd) 435 # define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)(c)) 436 437 /* BIO_s_file() */ 438 # define BIO_set_fp(b,fp,c) BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)(fp)) 439 # define BIO_get_fp(b,fpp) BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)(fpp)) 440 441 /* BIO_s_fd() and BIO_s_file() */ 442 # define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL) 443 # define BIO_tell(b) (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL) 444 445 /* 446 * name is cast to lose const, but might be better to route through a 447 * function so we can do it safely 448 */ 449 # ifdef CONST_STRICT 450 /* 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 */ 454 int BIO_read_filename(BIO *b, const char *name); 455 # else 456 # define BIO_read_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \ 457 BIO_CLOSE|BIO_FP_READ,(char *)(name)) 458 # endif 459 # define BIO_write_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \ 460 BIO_CLOSE|BIO_FP_WRITE,name) 461 # define BIO_append_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \ 462 BIO_CLOSE|BIO_FP_APPEND,name) 463 # define BIO_rw_filename(b,name) (int)BIO_ctrl(b,BIO_C_SET_FILENAME, \ 464 BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name) 465 466 /* 467 * WARNING WARNING, this ups the reference count on the read bio of the SSL 468 * structure. This is because the ssl read BIO is now pointed to by the 469 * next_bio field in the bio. So when you free the BIO, make sure you are 470 * doing a BIO_free_all() to catch the underlying BIO. 471 */ 472 # define BIO_set_ssl(b,ssl,c) BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)(ssl)) 473 # define BIO_get_ssl(b,sslp) BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)(sslp)) 474 # define BIO_set_ssl_mode(b,client) BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL) 475 # define BIO_set_ssl_renegotiate_bytes(b,num) \ 476 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL) 477 # define BIO_get_num_renegotiates(b) \ 478 BIO_ctrl(b,BIO_C_GET_SSL_NUM_RENEGOTIATES,0,NULL) 479 # define BIO_set_ssl_renegotiate_timeout(b,seconds) \ 480 BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL) 481 482 /* defined in evp.h */ 483 /* #define BIO_set_md(b,md) BIO_ctrl(b,BIO_C_SET_MD,1,(char *)(md)) */ 484 485 # define BIO_get_mem_data(b,pp) BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)(pp)) 486 # define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)(bm)) 487 # define BIO_get_mem_ptr(b,pp) BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0, \ 488 (char *)(pp)) 489 # define BIO_set_mem_eof_return(b,v) \ 490 BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL) 491 492 /* For the BIO_f_buffer() type */ 493 # define BIO_get_buffer_num_lines(b) BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL) 494 # define BIO_set_buffer_size(b,size) BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL) 495 # define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0) 496 # define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1) 497 # define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf) 498 499 /* Don't use the next one unless you know what you are doing :-) */ 500 # define BIO_dup_state(b,ret) BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret)) 501 502 # define BIO_reset(b) (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL) 503 # define BIO_eof(b) (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL) 504 # define BIO_set_close(b,c) (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL) 505 # define BIO_get_close(b) (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL) 506 # define BIO_pending(b) (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL) 507 # define BIO_wpending(b) (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL) 508 /* ...pending macros have inappropriate return type */ 509 size_t BIO_ctrl_pending(BIO *b); 510 size_t BIO_ctrl_wpending(BIO *b); 511 # define BIO_flush(b) (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL) 512 # define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0, \ 513 cbp) 514 # define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,cb) 515 516 /* For the BIO_f_buffer() type */ 517 # define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL) 518 # define BIO_buffer_peek(b,s,l) BIO_ctrl(b,BIO_CTRL_PEEK,(l),(s)) 519 520 /* For BIO_s_bio() */ 521 # define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL) 522 # define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL) 523 # define BIO_make_bio_pair(b1,b2) (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2) 524 # define BIO_destroy_bio_pair(b) (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL) 525 # define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 0, NULL) 526 /* macros with inappropriate type -- but ...pending macros use int too: */ 527 # define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL) 528 # define BIO_get_read_request(b) (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL) 529 size_t BIO_ctrl_get_write_guarantee(BIO *b); 530 size_t BIO_ctrl_get_read_request(BIO *b); 531 int BIO_ctrl_reset_read_request(BIO *b); 532 533 /* ctrl macros for dgram */ 534 # define BIO_ctrl_dgram_connect(b,peer) \ 535 (int)BIO_ctrl(b,BIO_CTRL_DGRAM_CONNECT,0, (char *)(peer)) 536 # define BIO_ctrl_set_connected(b,peer) \ 537 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_CONNECTED, 0, (char *)(peer)) 538 # define BIO_dgram_recv_timedout(b) \ 539 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_RECV_TIMER_EXP, 0, NULL) 540 # define BIO_dgram_send_timedout(b) \ 541 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_SEND_TIMER_EXP, 0, NULL) 542 # define BIO_dgram_get_peer(b,peer) \ 543 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_GET_PEER, 0, (char *)(peer)) 544 # define BIO_dgram_set_peer(b,peer) \ 545 (int)BIO_ctrl(b, BIO_CTRL_DGRAM_SET_PEER, 0, (char *)(peer)) 546 # define BIO_dgram_get_mtu_overhead(b) \ 547 (unsigned int)BIO_ctrl((b), BIO_CTRL_DGRAM_GET_MTU_OVERHEAD, 0, NULL) 548 549 #define BIO_get_ex_new_index(l, p, newf, dupf, freef) \ 550 CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_BIO, l, p, newf, dupf, freef) 551 int BIO_set_ex_data(BIO *bio, int idx, void *data); 552 void *BIO_get_ex_data(BIO *bio, int idx); 553 uint64_t BIO_number_read(BIO *bio); 554 uint64_t BIO_number_written(BIO *bio); 555 556 /* For BIO_f_asn1() */ 557 int BIO_asn1_set_prefix(BIO *b, asn1_ps_func *prefix, 558 asn1_ps_func *prefix_free); 559 int BIO_asn1_get_prefix(BIO *b, asn1_ps_func **pprefix, 560 asn1_ps_func **pprefix_free); 561 int BIO_asn1_set_suffix(BIO *b, asn1_ps_func *suffix, 562 asn1_ps_func *suffix_free); 563 int BIO_asn1_get_suffix(BIO *b, asn1_ps_func **psuffix, 564 asn1_ps_func **psuffix_free); 565 566 const BIO_METHOD *BIO_s_file(void); 567 BIO *BIO_new_file(const char *filename, const char *mode); 568 # ifndef OPENSSL_NO_STDIO 569 BIO *BIO_new_fp(FILE *stream, int close_flag); 570 # endif 571 BIO *BIO_new(const BIO_METHOD *type); 572 int BIO_free(BIO *a); 573 void BIO_set_data(BIO *a, void *ptr); 574 void *BIO_get_data(BIO *a); 575 void BIO_set_init(BIO *a, int init); 576 int BIO_get_init(BIO *a); 577 void BIO_set_shutdown(BIO *a, int shut); 578 int BIO_get_shutdown(BIO *a); 579 void BIO_vfree(BIO *a); 580 int BIO_up_ref(BIO *a); 581 int BIO_read(BIO *b, void *data, int dlen); 582 int BIO_read_ex(BIO *b, void *data, size_t dlen, size_t *readbytes); 583 int BIO_gets(BIO *bp, char *buf, int size); 584 int BIO_write(BIO *b, const void *data, int dlen); 585 int BIO_write_ex(BIO *b, const void *data, size_t dlen, size_t *written); 586 int BIO_puts(BIO *bp, const char *buf); 587 int BIO_indent(BIO *b, int indent, int max); 588 long BIO_ctrl(BIO *bp, int cmd, long larg, void *parg); 589 long BIO_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp); 590 void *BIO_ptr_ctrl(BIO *bp, int cmd, long larg); 591 long BIO_int_ctrl(BIO *bp, int cmd, long larg, int iarg); 592 BIO *BIO_push(BIO *b, BIO *append); 593 BIO *BIO_pop(BIO *b); 594 void BIO_free_all(BIO *a); 595 BIO *BIO_find_type(BIO *b, int bio_type); 596 BIO *BIO_next(BIO *b); 597 void BIO_set_next(BIO *b, BIO *next); 598 BIO *BIO_get_retry_BIO(BIO *bio, int *reason); 599 int BIO_get_retry_reason(BIO *bio); 600 void BIO_set_retry_reason(BIO *bio, int reason); 601 BIO *BIO_dup_chain(BIO *in); 602 603 int BIO_nread0(BIO *bio, char **buf); 604 int BIO_nread(BIO *bio, char **buf, int num); 605 int BIO_nwrite0(BIO *bio, char **buf); 606 int BIO_nwrite(BIO *bio, char **buf, int num); 607 608 long BIO_debug_callback(BIO *bio, int cmd, const char *argp, int argi, 609 long argl, long ret); 610 611 const BIO_METHOD *BIO_s_mem(void); 612 const BIO_METHOD *BIO_s_secmem(void); 613 BIO *BIO_new_mem_buf(const void *buf, int len); 614 # ifndef OPENSSL_NO_SOCK 615 const BIO_METHOD *BIO_s_socket(void); 616 const BIO_METHOD *BIO_s_connect(void); 617 const BIO_METHOD *BIO_s_accept(void); 618 # endif 619 const BIO_METHOD *BIO_s_fd(void); 620 const BIO_METHOD *BIO_s_log(void); 621 const BIO_METHOD *BIO_s_bio(void); 622 const BIO_METHOD *BIO_s_null(void); 623 const BIO_METHOD *BIO_f_null(void); 624 const BIO_METHOD *BIO_f_buffer(void); 625 const BIO_METHOD *BIO_f_linebuffer(void); 626 const BIO_METHOD *BIO_f_nbio_test(void); 627 # ifndef OPENSSL_NO_DGRAM 628 const BIO_METHOD *BIO_s_datagram(void); 629 int BIO_dgram_non_fatal_error(int error); 630 BIO *BIO_new_dgram(int fd, int close_flag); 631 # ifndef OPENSSL_NO_SCTP 632 const BIO_METHOD *BIO_s_datagram_sctp(void); 633 BIO *BIO_new_dgram_sctp(int fd, int close_flag); 634 int BIO_dgram_is_sctp(BIO *bio); 635 int BIO_dgram_sctp_notification_cb(BIO *b, 636 void (*handle_notifications) (BIO *bio, 637 void *context, 638 void *buf), 639 void *context); 640 int BIO_dgram_sctp_wait_for_dry(BIO *b); 641 int BIO_dgram_sctp_msg_waiting(BIO *b); 642 # endif 643 # endif 644 645 # ifndef OPENSSL_NO_SOCK 646 int BIO_sock_should_retry(int i); 647 int BIO_sock_non_fatal_error(int error); 648 # endif 649 650 int BIO_fd_should_retry(int i); 651 int BIO_fd_non_fatal_error(int error); 652 int BIO_dump_cb(int (*cb) (const void *data, size_t len, void *u), 653 void *u, const char *s, int len); 654 int BIO_dump_indent_cb(int (*cb) (const void *data, size_t len, void *u), 655 void *u, const char *s, int len, int indent); 656 int BIO_dump(BIO *b, const char *bytes, int len); 657 int BIO_dump_indent(BIO *b, const char *bytes, int len, int indent); 658 # ifndef OPENSSL_NO_STDIO 659 int BIO_dump_fp(FILE *fp, const char *s, int len); 660 int BIO_dump_indent_fp(FILE *fp, const char *s, int len, int indent); 661 # endif 662 int BIO_hex_string(BIO *out, int indent, int width, unsigned char *data, 663 int datalen); 664 665 # ifndef OPENSSL_NO_SOCK 666 BIO_ADDR *BIO_ADDR_new(void); 667 int BIO_ADDR_rawmake(BIO_ADDR *ap, int family, 668 const void *where, size_t wherelen, unsigned short port); 669 void BIO_ADDR_free(BIO_ADDR *); 670 void BIO_ADDR_clear(BIO_ADDR *ap); 671 int BIO_ADDR_family(const BIO_ADDR *ap); 672 int BIO_ADDR_rawaddress(const BIO_ADDR *ap, void *p, size_t *l); 673 unsigned short BIO_ADDR_rawport(const BIO_ADDR *ap); 674 char *BIO_ADDR_hostname_string(const BIO_ADDR *ap, int numeric); 675 char *BIO_ADDR_service_string(const BIO_ADDR *ap, int numeric); 676 char *BIO_ADDR_path_string(const BIO_ADDR *ap); 677 678 const BIO_ADDRINFO *BIO_ADDRINFO_next(const BIO_ADDRINFO *bai); 679 int BIO_ADDRINFO_family(const BIO_ADDRINFO *bai); 680 int BIO_ADDRINFO_socktype(const BIO_ADDRINFO *bai); 681 int BIO_ADDRINFO_protocol(const BIO_ADDRINFO *bai); 682 const BIO_ADDR *BIO_ADDRINFO_address(const BIO_ADDRINFO *bai); 683 void BIO_ADDRINFO_free(BIO_ADDRINFO *bai); 684 685 enum BIO_hostserv_priorities { 686 BIO_PARSE_PRIO_HOST, BIO_PARSE_PRIO_SERV 687 }; 688 int BIO_parse_hostserv(const char *hostserv, char **host, char **service, 689 enum BIO_hostserv_priorities hostserv_prio); 690 enum BIO_lookup_type { 691 BIO_LOOKUP_CLIENT, BIO_LOOKUP_SERVER 692 }; 693 int BIO_lookup(const char *host, const char *service, 694 enum BIO_lookup_type lookup_type, 695 int family, int socktype, BIO_ADDRINFO **res); 696 int BIO_lookup_ex(const char *host, const char *service, 697 int lookup_type, int family, int socktype, int protocol, 698 BIO_ADDRINFO **res); 699 int BIO_sock_error(int sock); 700 int BIO_socket_ioctl(int fd, long type, void *arg); 701 int BIO_socket_nbio(int fd, int mode); 702 int BIO_sock_init(void); 703 # if OPENSSL_API_COMPAT < 0x10100000L 704 # define BIO_sock_cleanup() while(0) continue 705 # endif 706 int BIO_set_tcp_ndelay(int sock, int turn_on); 707 708 DEPRECATEDIN_1_1_0(struct hostent *BIO_gethostbyname(const char *name)) 709 DEPRECATEDIN_1_1_0(int BIO_get_port(const char *str, unsigned short *port_ptr)) 710 DEPRECATEDIN_1_1_0(int BIO_get_host_ip(const char *str, unsigned char *ip)) 711 DEPRECATEDIN_1_1_0(int BIO_get_accept_socket(char *host_port, int mode)) 712 DEPRECATEDIN_1_1_0(int BIO_accept(int sock, char **ip_port)) 713 714 union BIO_sock_info_u { 715 BIO_ADDR *addr; 716 }; 717 enum BIO_sock_info_type { 718 BIO_SOCK_INFO_ADDRESS 719 }; 720 int BIO_sock_info(int sock, 721 enum BIO_sock_info_type type, union BIO_sock_info_u *info); 722 723 # define BIO_SOCK_REUSEADDR 0x01 724 # define BIO_SOCK_V6_ONLY 0x02 725 # define BIO_SOCK_KEEPALIVE 0x04 726 # define BIO_SOCK_NONBLOCK 0x08 727 # define BIO_SOCK_NODELAY 0x10 728 729 int BIO_socket(int domain, int socktype, int protocol, int options); 730 int BIO_connect(int sock, const BIO_ADDR *addr, int options); 731 int BIO_bind(int sock, const BIO_ADDR *addr, int options); 732 int BIO_listen(int sock, const BIO_ADDR *addr, int options); 733 int BIO_accept_ex(int accept_sock, BIO_ADDR *addr, int options); 734 int BIO_closesocket(int sock); 735 736 BIO *BIO_new_socket(int sock, int close_flag); 737 BIO *BIO_new_connect(const char *host_port); 738 BIO *BIO_new_accept(const char *host_port); 739 # endif /* OPENSSL_NO_SOCK*/ 740 741 BIO *BIO_new_fd(int fd, int close_flag); 742 743 int BIO_new_bio_pair(BIO **bio1, size_t writebuf1, 744 BIO **bio2, size_t writebuf2); 745 /* 746 * If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints. 747 * Otherwise returns 0 and sets *bio1 and *bio2 to NULL. Size 0 uses default 748 * value. 749 */ 750 751 void BIO_copy_next_retry(BIO *b); 752 753 /* 754 * long BIO_ghbn_ctrl(int cmd,int iarg,char *parg); 755 */ 756 757 # define ossl_bio__attr__(x) 758 # if defined(__GNUC__) && defined(__STDC_VERSION__) \ 759 && !defined(__APPLE__) 760 /* 761 * Because we support the 'z' modifier, which made its appearance in C99, 762 * we can't use __attribute__ with pre C99 dialects. 763 */ 764 # if __STDC_VERSION__ >= 199901L 765 # undef ossl_bio__attr__ 766 # define ossl_bio__attr__ __attribute__ 767 # if __GNUC__*10 + __GNUC_MINOR__ >= 44 768 # define ossl_bio__printf__ __gnu_printf__ 769 # else 770 # define ossl_bio__printf__ __printf__ 771 # endif 772 # endif 773 # endif 774 int BIO_printf(BIO *bio, const char *format, ...) 775 ossl_bio__attr__((__format__(ossl_bio__printf__, 2, 3))); 776 int BIO_vprintf(BIO *bio, const char *format, va_list args) 777 ossl_bio__attr__((__format__(ossl_bio__printf__, 2, 0))); 778 int BIO_snprintf(char *buf, size_t n, const char *format, ...) 779 ossl_bio__attr__((__format__(ossl_bio__printf__, 3, 4))); 780 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) 781 ossl_bio__attr__((__format__(ossl_bio__printf__, 3, 0))); 782 # undef ossl_bio__attr__ 783 # undef ossl_bio__printf__ 784 785 786 BIO_METHOD *BIO_meth_new(int type, const char *name); 787 void BIO_meth_free(BIO_METHOD *biom); 788 int (*BIO_meth_get_write(const BIO_METHOD *biom)) (BIO *, const char *, int); 789 int (*BIO_meth_get_write_ex(const BIO_METHOD *biom)) (BIO *, const char *, size_t, 790 size_t *); 791 int BIO_meth_set_write(BIO_METHOD *biom, 792 int (*write) (BIO *, const char *, int)); 793 int BIO_meth_set_write_ex(BIO_METHOD *biom, 794 int (*bwrite) (BIO *, const char *, size_t, size_t *)); 795 int (*BIO_meth_get_read(const BIO_METHOD *biom)) (BIO *, char *, int); 796 int (*BIO_meth_get_read_ex(const BIO_METHOD *biom)) (BIO *, char *, size_t, size_t *); 797 int BIO_meth_set_read(BIO_METHOD *biom, 798 int (*read) (BIO *, char *, int)); 799 int BIO_meth_set_read_ex(BIO_METHOD *biom, 800 int (*bread) (BIO *, char *, size_t, size_t *)); 801 int (*BIO_meth_get_puts(const BIO_METHOD *biom)) (BIO *, const char *); 802 int BIO_meth_set_puts(BIO_METHOD *biom, 803 int (*puts) (BIO *, const char *)); 804 int (*BIO_meth_get_gets(const BIO_METHOD *biom)) (BIO *, char *, int); 805 int BIO_meth_set_gets(BIO_METHOD *biom, 806 int (*gets) (BIO *, char *, int)); 807 long (*BIO_meth_get_ctrl(const BIO_METHOD *biom)) (BIO *, int, long, void *); 808 int BIO_meth_set_ctrl(BIO_METHOD *biom, 809 long (*ctrl) (BIO *, int, long, void *)); 810 int (*BIO_meth_get_create(const BIO_METHOD *bion)) (BIO *); 811 int BIO_meth_set_create(BIO_METHOD *biom, int (*create) (BIO *)); 812 int (*BIO_meth_get_destroy(const BIO_METHOD *biom)) (BIO *); 813 int BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy) (BIO *)); 814 long (*BIO_meth_get_callback_ctrl(const BIO_METHOD *biom)) 815 (BIO *, int, BIO_info_cb *); 816 int BIO_meth_set_callback_ctrl(BIO_METHOD *biom, 817 long (*callback_ctrl) (BIO *, int, 818 BIO_info_cb *)); 819 820 # ifdef __cplusplus 821 } 822 # endif 823 #endif 824