crypto/openssl-0.9.7d/include/openssl/bio.h

   1 /* crypto/bio/bio.h */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #ifndef HEADER_BIO_H
  60 #define HEADER_BIO_H
  61
  62 #ifndef OPENSSL_NO_FP_API
  63 # include <stdio.h>
  64 #endif
  65 #include <stdarg.h>
  66
  67 #include <openssl/crypto.h>
  68 #include <openssl/e_os2.h>
  69
  70 #ifdef  __cplusplus
  71 extern "C" {
  72 #endif
  73
  74 /* These are the 'types' of BIOs */
  75 #define BIO_TYPE_NONE           0
  76 #define BIO_TYPE_MEM            (1|0x0400)
  77 #define BIO_TYPE_FILE           (2|0x0400)
  78
  79 #define BIO_TYPE_FD             (4|0x0400|0x0100)
  80 #define BIO_TYPE_SOCKET         (5|0x0400|0x0100)
  81 #define BIO_TYPE_NULL           (6|0x0400)
  82 #define BIO_TYPE_SSL            (7|0x0200)
  83 #define BIO_TYPE_MD             (8|0x0200)              /* passive filter */
  84 #define BIO_TYPE_BUFFER         (9|0x0200)              /* filter */
  85 #define BIO_TYPE_CIPHER         (10|0x0200)             /* filter */
  86 #define BIO_TYPE_BASE64         (11|0x0200)             /* filter */
  87 #define BIO_TYPE_CONNECT        (12|0x0400|0x0100)      /* socket - connect */
  88 #define BIO_TYPE_ACCEPT         (13|0x0400|0x0100)      /* socket for accept */
  89 #define BIO_TYPE_PROXY_CLIENT   (14|0x0200)             /* client proxy BIO */
  90 #define BIO_TYPE_PROXY_SERVER   (15|0x0200)             /* server proxy BIO */
  91 #define BIO_TYPE_NBIO_TEST      (16|0x0200)             /* server proxy BIO */
  92 #define BIO_TYPE_NULL_FILTER    (17|0x0200)
  93 #define BIO_TYPE_BER            (18|0x0200)             /* BER -> bin filter */
  94 #define BIO_TYPE_BIO            (19|0x0400)             /* (half a) BIO pair */
  95 #define BIO_TYPE_LINEBUFFER     (20|0x0200)             /* filter */
  96
  97 #define BIO_TYPE_DESCRIPTOR     0x0100  /* socket, fd, connect or accept */
  98 #define BIO_TYPE_FILTER         0x0200
  99 #define BIO_TYPE_SOURCE_SINK    0x0400
 100
 101 /* BIO_FILENAME_READ|BIO_CLOSE to open or close on free.
 102  * BIO_set_fp(in,stdin,BIO_NOCLOSE); */
 103 #define BIO_NOCLOSE             0x00
 104 #define BIO_CLOSE               0x01
 105
 106 /* These are used in the following macros and are passed to
 107  * BIO_ctrl() */
 108 #define BIO_CTRL_RESET          1  /* opt - rewind/zero etc */
 109 #define BIO_CTRL_EOF            2  /* opt - are we at the eof */
 110 #define BIO_CTRL_INFO           3  /* opt - extra tit-bits */
 111 #define BIO_CTRL_SET            4  /* man - set the 'IO' type */
 112 #define BIO_CTRL_GET            5  /* man - get the 'IO' type */
 113 #define BIO_CTRL_PUSH           6  /* opt - internal, used to signify change */
 114 #define BIO_CTRL_POP            7  /* opt - internal, used to signify change */
 115 #define BIO_CTRL_GET_CLOSE      8  /* man - set the 'close' on free */
 116 #define BIO_CTRL_SET_CLOSE      9  /* man - set the 'close' on free */
 117 #define BIO_CTRL_PENDING        10  /* opt - is their more data buffered */
 118 #define BIO_CTRL_FLUSH          11  /* opt - 'flush' buffered output */
 119 #define BIO_CTRL_DUP            12  /* man - extra stuff for 'duped' BIO */
 120 #define BIO_CTRL_WPENDING       13  /* opt - number of bytes still to write */
 121 /* callback is int cb(BIO *bio,state,ret); */
 122 #define BIO_CTRL_SET_CALLBACK   14  /* opt - set callback function */
 123 #define BIO_CTRL_GET_CALLBACK   15  /* opt - set callback function */
 124
 125 #define BIO_CTRL_SET_FILENAME   30      /* BIO_s_file special */
 126
 127 /* modifiers */
 128 #define BIO_FP_READ             0x02
 129 #define BIO_FP_WRITE            0x04
 130 #define BIO_FP_APPEND           0x08
 131 #define BIO_FP_TEXT             0x10
 132
 133 #define BIO_FLAGS_READ          0x01
 134 #define BIO_FLAGS_WRITE         0x02
 135 #define BIO_FLAGS_IO_SPECIAL    0x04
 136 #define BIO_FLAGS_RWS (BIO_FLAGS_READ|BIO_FLAGS_WRITE|BIO_FLAGS_IO_SPECIAL)
 137 #define BIO_FLAGS_SHOULD_RETRY  0x08
 138
 139 /* Used in BIO_gethostbyname() */
 140 #define BIO_GHBN_CTRL_HITS              1
 141 #define BIO_GHBN_CTRL_MISSES            2
 142 #define BIO_GHBN_CTRL_CACHE_SIZE        3
 143 #define BIO_GHBN_CTRL_GET_ENTRY         4
 144 #define BIO_GHBN_CTRL_FLUSH             5
 145
 146 /* Mostly used in the SSL BIO */
 147 /* Not used anymore
 148  * #define BIO_FLAGS_PROTOCOL_DELAYED_READ 0x10
 149  * #define BIO_FLAGS_PROTOCOL_DELAYED_WRITE 0x20
 150  * #define BIO_FLAGS_PROTOCOL_STARTUP   0x40
 151  */
 152
 153 #define BIO_FLAGS_BASE64_NO_NL  0x100
 154
 155 /* This is used with memory BIOs: it means we shouldn't free up or change the
 156  * data in any way.
 157  */
 158 #define BIO_FLAGS_MEM_RDONLY    0x200
 159
 160 #define BIO_set_flags(b,f) ((b)->flags|=(f))
 161 #define BIO_get_flags(b) ((b)->flags)
 162 #define BIO_set_retry_special(b) \
 163                 ((b)->flags|=(BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY))
 164 #define BIO_set_retry_read(b) \
 165                 ((b)->flags|=(BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY))
 166 #define BIO_set_retry_write(b) \
 167                 ((b)->flags|=(BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY))
 168
 169 /* These are normally used internally in BIOs */
 170 #define BIO_clear_flags(b,f) ((b)->flags&= ~(f))
 171 #define BIO_clear_retry_flags(b) \
 172                 ((b)->flags&= ~(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
 173 #define BIO_get_retry_flags(b) \
 174                 ((b)->flags&(BIO_FLAGS_RWS|BIO_FLAGS_SHOULD_RETRY))
 175
 176 /* These should be used by the application to tell why we should retry */
 177 #define BIO_should_read(a)              ((a)->flags & BIO_FLAGS_READ)
 178 #define BIO_should_write(a)             ((a)->flags & BIO_FLAGS_WRITE)
 179 #define BIO_should_io_special(a)        ((a)->flags & BIO_FLAGS_IO_SPECIAL)
 180 #define BIO_retry_type(a)               ((a)->flags & BIO_FLAGS_RWS)
 181 #define BIO_should_retry(a)             ((a)->flags & BIO_FLAGS_SHOULD_RETRY)
 182
 183 /* The next three are used in conjunction with the
 184  * BIO_should_io_special() condition.  After this returns true,
 185  * BIO *BIO_get_retry_BIO(BIO *bio, int *reason); will walk the BIO
 186  * stack and return the 'reason' for the special and the offending BIO.
 187  * Given a BIO, BIO_get_retry_reason(bio) will return the code. */
 188 /* Returned from the SSL bio when the certificate retrieval code had an error */
 189 #define BIO_RR_SSL_X509_LOOKUP          0x01
 190 /* Returned from the connect BIO when a connect would have blocked */
 191 #define BIO_RR_CONNECT                  0x02
 192 /* Returned from the accept BIO when an accept would have blocked */
 193 #define BIO_RR_ACCEPT                   0x03
 194
 195 /* These are passed by the BIO callback */
 196 #define BIO_CB_FREE     0x01
 197 #define BIO_CB_READ     0x02
 198 #define BIO_CB_WRITE    0x03
 199 #define BIO_CB_PUTS     0x04
 200 #define BIO_CB_GETS     0x05
 201 #define BIO_CB_CTRL     0x06
 202
 203 /* The callback is called before and after the underling operation,
 204  * The BIO_CB_RETURN flag indicates if it is after the call */
 205 #define BIO_CB_RETURN   0x80
 206 #define BIO_CB_return(a) ((a)|BIO_CB_RETURN))
 207 #define BIO_cb_pre(a)   (!((a)&BIO_CB_RETURN))
 208 #define BIO_cb_post(a)  ((a)&BIO_CB_RETURN)
 209
 210 #define BIO_set_callback(b,cb)          ((b)->callback=(cb))
 211 #define BIO_set_callback_arg(b,arg)     ((b)->cb_arg=(char *)(arg))
 212 #define BIO_get_callback_arg(b)         ((b)->cb_arg)
 213 #define BIO_get_callback(b)             ((b)->callback)
 214 #define BIO_method_name(b)              ((b)->method->name)
 215 #define BIO_method_type(b)              ((b)->method->type)
 216
 217 typedef struct bio_st BIO;
 218
 219 typedef void bio_info_cb(struct bio_st *, int, const char *, int, long, long);
 220
 221 #ifndef OPENSSL_SYS_WIN16
 222 typedef struct bio_method_st
 223         {
 224         int type;
 225         const char *name;
 226         int (*bwrite)(BIO *, const char *, int);
 227         int (*bread)(BIO *, char *, int);
 228         int (*bputs)(BIO *, const char *);
 229         int (*bgets)(BIO *, char *, int);
 230         long (*ctrl)(BIO *, int, long, void *);
 231         int (*create)(BIO *);
 232         int (*destroy)(BIO *);
 233         long (*callback_ctrl)(BIO *, int, bio_info_cb *);
 234         } BIO_METHOD;
 235 #else
 236 typedef struct bio_method_st
 237         {
 238         int type;
 239         const char *name;
 240         int (_far *bwrite)();
 241         int (_far *bread)();
 242         int (_far *bputs)();
 243         int (_far *bgets)();
 244         long (_far *ctrl)();
 245         int (_far *create)();
 246         int (_far *destroy)();
 247         long (_far *callback_ctrl)();
 248         } BIO_METHOD;
 249 #endif
 250
 251 struct bio_st
 252         {
 253         BIO_METHOD *method;
 254         /* bio, mode, argp, argi, argl, ret */
 255         long (*callback)(struct bio_st *,int,const char *,int, long,long);
 256         char *cb_arg; /* first argument for the callback */
 257
 258         int init;
 259         int shutdown;
 260         int flags;      /* extra storage */
 261         int retry_reason;
 262         int num;
 263         void *ptr;
 264         struct bio_st *next_bio;        /* used by filter BIOs */
 265         struct bio_st *prev_bio;        /* used by filter BIOs */
 266         int references;
 267         unsigned long num_read;
 268         unsigned long num_write;
 269
 270         CRYPTO_EX_DATA ex_data;
 271         };
 272
 273 DECLARE_STACK_OF(BIO)
 274
 275 typedef struct bio_f_buffer_ctx_struct
 276         {
 277         /* BIO *bio; */ /* this is now in the BIO struct */
 278         int ibuf_size;  /* how big is the input buffer */
 279         int obuf_size;  /* how big is the output buffer */
 280
 281         char *ibuf;             /* the char array */
 282         int ibuf_len;           /* how many bytes are in it */
 283         int ibuf_off;           /* write/read offset */
 284
 285         char *obuf;             /* the char array */
 286         int obuf_len;           /* how many bytes are in it */
 287         int obuf_off;           /* write/read offset */
 288         } BIO_F_BUFFER_CTX;
 289
 290 /* connect BIO stuff */
 291 #define BIO_CONN_S_BEFORE               1
 292 #define BIO_CONN_S_GET_IP               2
 293 #define BIO_CONN_S_GET_PORT             3
 294 #define BIO_CONN_S_CREATE_SOCKET        4
 295 #define BIO_CONN_S_CONNECT              5
 296 #define BIO_CONN_S_OK                   6
 297 #define BIO_CONN_S_BLOCKED_CONNECT      7
 298 #define BIO_CONN_S_NBIO                 8
 299 /*#define BIO_CONN_get_param_hostname   BIO_ctrl */
 300
 301 #define BIO_C_SET_CONNECT                       100
 302 #define BIO_C_DO_STATE_MACHINE                  101
 303 #define BIO_C_SET_NBIO                          102
 304 #define BIO_C_SET_PROXY_PARAM                   103
 305 #define BIO_C_SET_FD                            104
 306 #define BIO_C_GET_FD                            105
 307 #define BIO_C_SET_FILE_PTR                      106
 308 #define BIO_C_GET_FILE_PTR                      107
 309 #define BIO_C_SET_FILENAME                      108
 310 #define BIO_C_SET_SSL                           109
 311 #define BIO_C_GET_SSL                           110
 312 #define BIO_C_SET_MD                            111
 313 #define BIO_C_GET_MD                            112
 314 #define BIO_C_GET_CIPHER_STATUS                 113
 315 #define BIO_C_SET_BUF_MEM                       114
 316 #define BIO_C_GET_BUF_MEM_PTR                   115
 317 #define BIO_C_GET_BUFF_NUM_LINES                116
 318 #define BIO_C_SET_BUFF_SIZE                     117
 319 #define BIO_C_SET_ACCEPT                        118
 320 #define BIO_C_SSL_MODE                          119
 321 #define BIO_C_GET_MD_CTX                        120
 322 #define BIO_C_GET_PROXY_PARAM                   121
 323 #define BIO_C_SET_BUFF_READ_DATA                122 /* data to read first */
 324 #define BIO_C_GET_CONNECT                       123
 325 #define BIO_C_GET_ACCEPT                        124
 326 #define BIO_C_SET_SSL_RENEGOTIATE_BYTES         125
 327 #define BIO_C_GET_SSL_NUM_RENEGOTIATES          126
 328 #define BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT       127
 329 #define BIO_C_FILE_SEEK                         128
 330 #define BIO_C_GET_CIPHER_CTX                    129
 331 #define BIO_C_SET_BUF_MEM_EOF_RETURN            130/*return end of input value*/
 332 #define BIO_C_SET_BIND_MODE                     131
 333 #define BIO_C_GET_BIND_MODE                     132
 334 #define BIO_C_FILE_TELL                         133
 335 #define BIO_C_GET_SOCKS                         134
 336 #define BIO_C_SET_SOCKS                         135
 337
 338 #define BIO_C_SET_WRITE_BUF_SIZE                136/* for BIO_s_bio */
 339 #define BIO_C_GET_WRITE_BUF_SIZE                137
 340 #define BIO_C_MAKE_BIO_PAIR                     138
 341 #define BIO_C_DESTROY_BIO_PAIR                  139
 342 #define BIO_C_GET_WRITE_GUARANTEE               140
 343 #define BIO_C_GET_READ_REQUEST                  141
 344 #define BIO_C_SHUTDOWN_WR                       142
 345 #define BIO_C_NREAD0                            143
 346 #define BIO_C_NREAD                             144
 347 #define BIO_C_NWRITE0                           145
 348 #define BIO_C_NWRITE                            146
 349 #define BIO_C_RESET_READ_REQUEST                147
 350
 351
 352 #define BIO_set_app_data(s,arg)         BIO_set_ex_data(s,0,arg)
 353 #define BIO_get_app_data(s)             BIO_get_ex_data(s,0)
 354
 355 /* BIO_s_connect() and BIO_s_socks4a_connect() */
 356 #define BIO_set_conn_hostname(b,name) BIO_ctrl(b,BIO_C_SET_CONNECT,0,(char *)name)
 357 #define BIO_set_conn_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,1,(char *)port)
 358 #define BIO_set_conn_ip(b,ip)     BIO_ctrl(b,BIO_C_SET_CONNECT,2,(char *)ip)
 359 #define BIO_set_conn_int_port(b,port) BIO_ctrl(b,BIO_C_SET_CONNECT,3,(char *)port)
 360 #define BIO_get_conn_hostname(b)  BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,0)
 361 #define BIO_get_conn_port(b)      BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,1)
 362 #define BIO_get_conn_ip(b)               BIO_ptr_ctrl(b,BIO_C_GET_CONNECT,2)
 363 #define BIO_get_conn_int_port(b) BIO_int_ctrl(b,BIO_C_GET_CONNECT,3)
 364
 365
 366 #define BIO_set_nbio(b,n)       BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL)
 367
 368 /* BIO_s_accept_socket() */
 369 #define BIO_set_accept_port(b,name) BIO_ctrl(b,BIO_C_SET_ACCEPT,0,(char *)name)
 370 #define BIO_get_accept_port(b)  BIO_ptr_ctrl(b,BIO_C_GET_ACCEPT,0)
 371 /* #define BIO_set_nbio(b,n)    BIO_ctrl(b,BIO_C_SET_NBIO,(n),NULL) */
 372 #define BIO_set_nbio_accept(b,n) BIO_ctrl(b,BIO_C_SET_ACCEPT,1,(n)?"a":NULL)
 373 #define BIO_set_accept_bios(b,bio) BIO_ctrl(b,BIO_C_SET_ACCEPT,2,(char *)bio)
 374
 375 #define BIO_BIND_NORMAL                 0
 376 #define BIO_BIND_REUSEADDR_IF_UNUSED    1
 377 #define BIO_BIND_REUSEADDR              2
 378 #define BIO_set_bind_mode(b,mode) BIO_ctrl(b,BIO_C_SET_BIND_MODE,mode,NULL)
 379 #define BIO_get_bind_mode(b,mode) BIO_ctrl(b,BIO_C_GET_BIND_MODE,0,NULL)
 380
 381 #define BIO_do_connect(b)       BIO_do_handshake(b)
 382 #define BIO_do_accept(b)        BIO_do_handshake(b)
 383 #define BIO_do_handshake(b)     BIO_ctrl(b,BIO_C_DO_STATE_MACHINE,0,NULL)
 384
 385 /* BIO_s_proxy_client() */
 386 #define BIO_set_url(b,url)      BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,0,(char *)(url))
 387 #define BIO_set_proxies(b,p)    BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,1,(char *)(p))
 388 /* BIO_set_nbio(b,n) */
 389 #define BIO_set_filter_bio(b,s) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,2,(char *)(s))
 390 /* BIO *BIO_get_filter_bio(BIO *bio); */
 391 #define BIO_set_proxy_cb(b,cb) BIO_callback_ctrl(b,BIO_C_SET_PROXY_PARAM,3,(void *(*cb)()))
 392 #define BIO_set_proxy_header(b,sk) BIO_ctrl(b,BIO_C_SET_PROXY_PARAM,4,(char *)sk)
 393 #define BIO_set_no_connect_return(b,bool) BIO_int_ctrl(b,BIO_C_SET_PROXY_PARAM,5,bool)
 394
 395 #define BIO_get_proxy_header(b,skp) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,0,(char *)skp)
 396 #define BIO_get_proxies(b,pxy_p) BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,1,(char *)(pxy_p))
 397 #define BIO_get_url(b,url)      BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,2,(char *)(url))
 398 #define BIO_get_no_connect_return(b)    BIO_ctrl(b,BIO_C_GET_PROXY_PARAM,5,NULL)
 399
 400 #define BIO_set_fd(b,fd,c)      BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
 401 #define BIO_get_fd(b,c)         BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c)
 402
 403 #define BIO_set_fp(b,fp,c)      BIO_ctrl(b,BIO_C_SET_FILE_PTR,c,(char *)fp)
 404 #define BIO_get_fp(b,fpp)       BIO_ctrl(b,BIO_C_GET_FILE_PTR,0,(char *)fpp)
 405
 406 #define BIO_seek(b,ofs) (int)BIO_ctrl(b,BIO_C_FILE_SEEK,ofs,NULL)
 407 #define BIO_tell(b)     (int)BIO_ctrl(b,BIO_C_FILE_TELL,0,NULL)
 408
 409 /* name is cast to lose const, but might be better to route through a function
 410    so we can do it safely */
 411 #ifdef CONST_STRICT
 412 /* If you are wondering why this isn't defined, its because CONST_STRICT is
 413  * purely a compile-time kludge to allow const to be checked.
 414  */
 415 int BIO_read_filename(BIO *b,const char *name);
 416 #else
 417 #define BIO_read_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
 418                 BIO_CLOSE|BIO_FP_READ,(char *)name)
 419 #endif
 420 #define BIO_write_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
 421                 BIO_CLOSE|BIO_FP_WRITE,name)
 422 #define BIO_append_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
 423                 BIO_CLOSE|BIO_FP_APPEND,name)
 424 #define BIO_rw_filename(b,name) BIO_ctrl(b,BIO_C_SET_FILENAME, \
 425                 BIO_CLOSE|BIO_FP_READ|BIO_FP_WRITE,name)
 426
 427 /* WARNING WARNING, this ups the reference count on the read bio of the
 428  * SSL structure.  This is because the ssl read BIO is now pointed to by
 429  * the next_bio field in the bio.  So when you free the BIO, make sure
 430  * you are doing a BIO_free_all() to catch the underlying BIO. */
 431 #define BIO_set_ssl(b,ssl,c)    BIO_ctrl(b,BIO_C_SET_SSL,c,(char *)ssl)
 432 #define BIO_get_ssl(b,sslp)     BIO_ctrl(b,BIO_C_GET_SSL,0,(char *)sslp)
 433 #define BIO_set_ssl_mode(b,client)      BIO_ctrl(b,BIO_C_SSL_MODE,client,NULL)
 434 #define BIO_set_ssl_renegotiate_bytes(b,num) \
 435         BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_BYTES,num,NULL);
 436 #define BIO_get_num_renegotiates(b) \
 437         BIO_ctrl(b,BIO_C_GET_SSL_NUM_RENEGOTIATES,0,NULL);
 438 #define BIO_set_ssl_renegotiate_timeout(b,seconds) \
 439         BIO_ctrl(b,BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT,seconds,NULL);
 440
 441 /* defined in evp.h */
 442 /* #define BIO_set_md(b,md)     BIO_ctrl(b,BIO_C_SET_MD,1,(char *)md) */
 443
 444 #define BIO_get_mem_data(b,pp)  BIO_ctrl(b,BIO_CTRL_INFO,0,(char *)pp)
 445 #define BIO_set_mem_buf(b,bm,c) BIO_ctrl(b,BIO_C_SET_BUF_MEM,c,(char *)bm)
 446 #define BIO_get_mem_ptr(b,pp)   BIO_ctrl(b,BIO_C_GET_BUF_MEM_PTR,0,(char *)pp)
 447 #define BIO_set_mem_eof_return(b,v) \
 448                                 BIO_ctrl(b,BIO_C_SET_BUF_MEM_EOF_RETURN,v,NULL)
 449
 450 /* For the BIO_f_buffer() type */
 451 #define BIO_get_buffer_num_lines(b)     BIO_ctrl(b,BIO_C_GET_BUFF_NUM_LINES,0,NULL)
 452 #define BIO_set_buffer_size(b,size)     BIO_ctrl(b,BIO_C_SET_BUFF_SIZE,size,NULL)
 453 #define BIO_set_read_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,0)
 454 #define BIO_set_write_buffer_size(b,size) BIO_int_ctrl(b,BIO_C_SET_BUFF_SIZE,size,1)
 455 #define BIO_set_buffer_read_data(b,buf,num) BIO_ctrl(b,BIO_C_SET_BUFF_READ_DATA,num,buf)
 456
 457 /* Don't use the next one unless you know what you are doing :-) */
 458 #define BIO_dup_state(b,ret)    BIO_ctrl(b,BIO_CTRL_DUP,0,(char *)(ret))
 459
 460 #define BIO_reset(b)            (int)BIO_ctrl(b,BIO_CTRL_RESET,0,NULL)
 461 #define BIO_eof(b)              (int)BIO_ctrl(b,BIO_CTRL_EOF,0,NULL)
 462 #define BIO_set_close(b,c)      (int)BIO_ctrl(b,BIO_CTRL_SET_CLOSE,(c),NULL)
 463 #define BIO_get_close(b)        (int)BIO_ctrl(b,BIO_CTRL_GET_CLOSE,0,NULL)
 464 #define BIO_pending(b)          (int)BIO_ctrl(b,BIO_CTRL_PENDING,0,NULL)
 465 #define BIO_wpending(b)         (int)BIO_ctrl(b,BIO_CTRL_WPENDING,0,NULL)
 466 /* ...pending macros have inappropriate return type */
 467 size_t BIO_ctrl_pending(BIO *b);
 468 size_t BIO_ctrl_wpending(BIO *b);
 469 #define BIO_flush(b)            (int)BIO_ctrl(b,BIO_CTRL_FLUSH,0,NULL)
 470 #define BIO_get_info_callback(b,cbp) (int)BIO_ctrl(b,BIO_CTRL_GET_CALLBACK,0, \
 471                                                    cbp)
 472 #define BIO_set_info_callback(b,cb) (int)BIO_callback_ctrl(b,BIO_CTRL_SET_CALLBACK,cb)
 473
 474 /* For the BIO_f_buffer() type */
 475 #define BIO_buffer_get_num_lines(b) BIO_ctrl(b,BIO_CTRL_GET,0,NULL)
 476
 477 /* For BIO_s_bio() */
 478 #define BIO_set_write_buf_size(b,size) (int)BIO_ctrl(b,BIO_C_SET_WRITE_BUF_SIZE,size,NULL)
 479 #define BIO_get_write_buf_size(b,size) (size_t)BIO_ctrl(b,BIO_C_GET_WRITE_BUF_SIZE,size,NULL)
 480 #define BIO_make_bio_pair(b1,b2)   (int)BIO_ctrl(b1,BIO_C_MAKE_BIO_PAIR,0,b2)
 481 #define BIO_destroy_bio_pair(b)    (int)BIO_ctrl(b,BIO_C_DESTROY_BIO_PAIR,0,NULL)
 482 #define BIO_shutdown_wr(b) (int)BIO_ctrl(b, BIO_C_SHUTDOWN_WR, 0, NULL)
 483 /* macros with inappropriate type -- but ...pending macros use int too: */
 484 #define BIO_get_write_guarantee(b) (int)BIO_ctrl(b,BIO_C_GET_WRITE_GUARANTEE,0,NULL)
 485 #define BIO_get_read_request(b)    (int)BIO_ctrl(b,BIO_C_GET_READ_REQUEST,0,NULL)
 486 size_t BIO_ctrl_get_write_guarantee(BIO *b);
 487 size_t BIO_ctrl_get_read_request(BIO *b);
 488 int BIO_ctrl_reset_read_request(BIO *b);
 489
 490 /* These two aren't currently implemented */
 491 /* int BIO_get_ex_num(BIO *bio); */
 492 /* void BIO_set_ex_free_func(BIO *bio,int idx,void (*cb)()); */
 493 int BIO_set_ex_data(BIO *bio,int idx,void *data);
 494 void *BIO_get_ex_data(BIO *bio,int idx);
 495 int BIO_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 496         CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
 497 unsigned long BIO_number_read(BIO *bio);
 498 unsigned long BIO_number_written(BIO *bio);
 499
 500 # ifndef OPENSSL_NO_FP_API
 501 #  if defined(OPENSSL_SYS_WIN16) && defined(_WINDLL)
 502 BIO_METHOD *BIO_s_file_internal(void);
 503 BIO *BIO_new_file_internal(char *filename, char *mode);
 504 BIO *BIO_new_fp_internal(FILE *stream, int close_flag);
 505 #    define BIO_s_file  BIO_s_file_internal
 506 #    define BIO_new_file        BIO_new_file_internal
 507 #    define BIO_new_fp  BIO_new_fp_internal
 508 #  else /* FP_API */
 509 BIO_METHOD *BIO_s_file(void );
 510 BIO *BIO_new_file(const char *filename, const char *mode);
 511 BIO *BIO_new_fp(FILE *stream, int close_flag);
 512 #    define BIO_s_file_internal         BIO_s_file
 513 #    define BIO_new_file_internal       BIO_new_file
 514 #    define BIO_new_fp_internal         BIO_s_file
 515 #  endif /* FP_API */
 516 # endif
 517 BIO *   BIO_new(BIO_METHOD *type);
 518 int     BIO_set(BIO *a,BIO_METHOD *type);
 519 int     BIO_free(BIO *a);
 520 void    BIO_vfree(BIO *a);
 521 int     BIO_read(BIO *b, void *data, int len);
 522 int     BIO_gets(BIO *bp,char *buf, int size);
 523 int     BIO_write(BIO *b, const void *data, int len);
 524 int     BIO_puts(BIO *bp,const char *buf);
 525 int     BIO_indent(BIO *b,int indent,int max);
 526 long    BIO_ctrl(BIO *bp,int cmd,long larg,void *parg);
 527 long BIO_callback_ctrl(BIO *b, int cmd, void (*fp)(struct bio_st *, int, const char *, int, long, long));
 528 char *  BIO_ptr_ctrl(BIO *bp,int cmd,long larg);
 529 long    BIO_int_ctrl(BIO *bp,int cmd,long larg,int iarg);
 530 BIO *   BIO_push(BIO *b,BIO *append);
 531 BIO *   BIO_pop(BIO *b);
 532 void    BIO_free_all(BIO *a);
 533 BIO *   BIO_find_type(BIO *b,int bio_type);
 534 BIO *   BIO_next(BIO *b);
 535 BIO *   BIO_get_retry_BIO(BIO *bio, int *reason);
 536 int     BIO_get_retry_reason(BIO *bio);
 537 BIO *   BIO_dup_chain(BIO *in);
 538
 539 int BIO_nread0(BIO *bio, char **buf);
 540 int BIO_nread(BIO *bio, char **buf, int num);
 541 int BIO_nwrite0(BIO *bio, char **buf);
 542 int BIO_nwrite(BIO *bio, char **buf, int num);
 543
 544 #ifndef OPENSSL_SYS_WIN16
 545 long BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
 546         long argl,long ret);
 547 #else
 548 long _far _loadds BIO_debug_callback(BIO *bio,int cmd,const char *argp,int argi,
 549         long argl,long ret);
 550 #endif
 551
 552 BIO_METHOD *BIO_s_mem(void);
 553 BIO *BIO_new_mem_buf(void *buf, int len);
 554 BIO_METHOD *BIO_s_socket(void);
 555 BIO_METHOD *BIO_s_connect(void);
 556 BIO_METHOD *BIO_s_accept(void);
 557 BIO_METHOD *BIO_s_fd(void);
 558 #ifndef OPENSSL_SYS_OS2
 559 BIO_METHOD *BIO_s_log(void);
 560 #endif
 561 BIO_METHOD *BIO_s_bio(void);
 562 BIO_METHOD *BIO_s_null(void);
 563 BIO_METHOD *BIO_f_null(void);
 564 BIO_METHOD *BIO_f_buffer(void);
 565 #ifdef OPENSSL_SYS_VMS
 566 BIO_METHOD *BIO_f_linebuffer(void);
 567 #endif
 568 BIO_METHOD *BIO_f_nbio_test(void);
 569 /* BIO_METHOD *BIO_f_ber(void); */
 570
 571 int BIO_sock_should_retry(int i);
 572 int BIO_sock_non_fatal_error(int error);
 573 int BIO_fd_should_retry(int i);
 574 int BIO_fd_non_fatal_error(int error);
 575 int BIO_dump(BIO *b,const char *bytes,int len);
 576 int BIO_dump_indent(BIO *b,const char *bytes,int len,int indent);
 577
 578 struct hostent *BIO_gethostbyname(const char *name);
 579 /* We might want a thread-safe interface too:
 580  * struct hostent *BIO_gethostbyname_r(const char *name,
 581  *     struct hostent *result, void *buffer, size_t buflen);
 582  * or something similar (caller allocates a struct hostent,
 583  * pointed to by "result", and additional buffer space for the various
 584  * substructures; if the buffer does not suffice, NULL is returned
 585  * and an appropriate error code is set).
 586  */
 587 int BIO_sock_error(int sock);
 588 int BIO_socket_ioctl(int fd, long type, void *arg);
 589 int BIO_socket_nbio(int fd,int mode);
 590 int BIO_get_port(const char *str, unsigned short *port_ptr);
 591 int BIO_get_host_ip(const char *str, unsigned char *ip);
 592 int BIO_get_accept_socket(char *host_port,int mode);
 593 int BIO_accept(int sock,char **ip_port);
 594 int BIO_sock_init(void );
 595 void BIO_sock_cleanup(void);
 596 int BIO_set_tcp_ndelay(int sock,int turn_on);
 597
 598 BIO *BIO_new_socket(int sock, int close_flag);
 599 BIO *BIO_new_fd(int fd, int close_flag);
 600 BIO *BIO_new_connect(char *host_port);
 601 BIO *BIO_new_accept(char *host_port);
 602
 603 int BIO_new_bio_pair(BIO **bio1, size_t writebuf1,
 604         BIO **bio2, size_t writebuf2);
 605 /* If successful, returns 1 and in *bio1, *bio2 two BIO pair endpoints.
 606  * Otherwise returns 0 and sets *bio1 and *bio2 to NULL.
 607  * Size 0 uses default value.
 608  */
 609
 610 void BIO_copy_next_retry(BIO *b);
 611
 612 /*long BIO_ghbn_ctrl(int cmd,int iarg,char *parg);*/
 613
 614 int BIO_printf(BIO *bio, const char *format, ...);
 615 int BIO_vprintf(BIO *bio, const char *format, va_list args);
 616 int BIO_snprintf(char *buf, size_t n, const char *format, ...);
 617 int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args);
 618
 619 /* BEGIN ERROR CODES */
 620 /* The following lines are auto generated by the script mkerr.pl. Any changes
 621  * made after this point may be overwritten when the script is next run.
 622  */
 623 void ERR_load_BIO_strings(void);
 624
 625 /* Error codes for the BIO functions. */
 626
 627 /* Function codes. */
 628 #define BIO_F_ACPT_STATE                                 100
 629 #define BIO_F_BIO_ACCEPT                                 101
 630 #define BIO_F_BIO_BER_GET_HEADER                         102
 631 #define BIO_F_BIO_CTRL                                   103
 632 #define BIO_F_BIO_GETHOSTBYNAME                          120
 633 #define BIO_F_BIO_GETS                                   104
 634 #define BIO_F_BIO_GET_ACCEPT_SOCKET                      105
 635 #define BIO_F_BIO_GET_HOST_IP                            106
 636 #define BIO_F_BIO_GET_PORT                               107
 637 #define BIO_F_BIO_MAKE_PAIR                              121
 638 #define BIO_F_BIO_NEW                                    108
 639 #define BIO_F_BIO_NEW_FILE                               109
 640 #define BIO_F_BIO_NEW_MEM_BUF                            126
 641 #define BIO_F_BIO_NREAD                                  123
 642 #define BIO_F_BIO_NREAD0                                 124
 643 #define BIO_F_BIO_NWRITE                                 125
 644 #define BIO_F_BIO_NWRITE0                                122
 645 #define BIO_F_BIO_PUTS                                   110
 646 #define BIO_F_BIO_READ                                   111
 647 #define BIO_F_BIO_SOCK_INIT                              112
 648 #define BIO_F_BIO_WRITE                                  113
 649 #define BIO_F_BUFFER_CTRL                                114
 650 #define BIO_F_CONN_CTRL                                  127
 651 #define BIO_F_CONN_STATE                                 115
 652 #define BIO_F_FILE_CTRL                                  116
 653 #define BIO_F_FILE_READ                                  130
 654 #define BIO_F_LINEBUFFER_CTRL                            129
 655 #define BIO_F_MEM_READ                                   128
 656 #define BIO_F_MEM_WRITE                                  117
 657 #define BIO_F_SSL_NEW                                    118
 658 #define BIO_F_WSASTARTUP                                 119
 659
 660 /* Reason codes. */
 661 #define BIO_R_ACCEPT_ERROR                               100
 662 #define BIO_R_BAD_FOPEN_MODE                             101
 663 #define BIO_R_BAD_HOSTNAME_LOOKUP                        102
 664 #define BIO_R_BROKEN_PIPE                                124
 665 #define BIO_R_CONNECT_ERROR                              103
 666 #define BIO_R_EOF_ON_MEMORY_BIO                          127
 667 #define BIO_R_ERROR_SETTING_NBIO                         104
 668 #define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET      105
 669 #define BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET        106
 670 #define BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET          107
 671 #define BIO_R_INVALID_ARGUMENT                           125
 672 #define BIO_R_INVALID_IP_ADDRESS                         108
 673 #define BIO_R_IN_USE                                     123
 674 #define BIO_R_KEEPALIVE                                  109
 675 #define BIO_R_NBIO_CONNECT_ERROR                         110
 676 #define BIO_R_NO_ACCEPT_PORT_SPECIFIED                   111
 677 #define BIO_R_NO_HOSTNAME_SPECIFIED                      112
 678 #define BIO_R_NO_PORT_DEFINED                            113
 679 #define BIO_R_NO_PORT_SPECIFIED                          114
 680 #define BIO_R_NO_SUCH_FILE                               128
 681 #define BIO_R_NULL_PARAMETER                             115
 682 #define BIO_R_TAG_MISMATCH                               116
 683 #define BIO_R_UNABLE_TO_BIND_SOCKET                      117
 684 #define BIO_R_UNABLE_TO_CREATE_SOCKET                    118
 685 #define BIO_R_UNABLE_TO_LISTEN_SOCKET                    119
 686 #define BIO_R_UNINITIALIZED                              120
 687 #define BIO_R_UNSUPPORTED_METHOD                         121
 688 #define BIO_R_WRITE_TO_READ_ONLY_BIO                     126
 689 #define BIO_R_WSASTARTUP                                 122
 690
 691 #ifdef  __cplusplus
 692 }
 693 #endif
 694 #endif