2 * Copyright 2005-2016 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/sockets.h"
12 #include "internal/refcount.h"
14 /* BEGIN BIO_ADDRINFO/BIO_ADDR stuff. */
16 #ifndef OPENSSL_NO_SOCK
18 * Throughout this file and b_addr.c, the existence of the macro
19 * AI_PASSIVE is used to detect the availability of struct addrinfo,
20 * getnameinfo() and getaddrinfo(). If that macro doesn't exist,
21 * we use our own implementation instead.
25 * It's imperative that these macros get defined before openssl/bio.h gets
26 * included. Otherwise, the AI_PASSIVE hack will not work properly.
27 * For clarity, we check for internal/cryptlib.h since it's a common header
28 * that also includes bio.h.
30 # ifdef HEADER_CRYPTLIB_H
31 # error internal/cryptlib.h included before bio_lcl.h
34 # error openssl/bio.h included before bio_lcl.h
38 * Undefine AF_UNIX on systems that define it but don't support it.
40 # if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_VMS)
47 * There's a bug in VMS C header file netdb.h, where struct addrinfo
48 * always is the P32 variant, but the functions that handle that structure,
49 * such as getaddrinfo() and freeaddrinfo() adapt to the initial pointer
50 * size. The easiest workaround is to force struct addrinfo to be the
51 * 64-bit variant when compiling in P64 mode.
53 # if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE == 64
54 # define addrinfo __addrinfo64
57 # define bio_addrinfo_st addrinfo
58 # define bai_family ai_family
59 # define bai_socktype ai_socktype
60 # define bai_protocol ai_protocol
61 # define bai_addrlen ai_addrlen
62 # define bai_addr ai_addr
63 # define bai_next ai_next
65 struct bio_addrinfo_st {
70 struct sockaddr *bai_addr;
71 struct bio_addrinfo_st *bai_next;
78 struct sockaddr_in6 s_in6;
80 struct sockaddr_in s_in;
82 struct sockaddr_un s_un;
87 /* END BIO_ADDRINFO/BIO_ADDR stuff. */
89 #include "internal/cryptlib.h"
90 #include "internal/bio.h"
92 typedef struct bio_f_buffer_ctx_struct {
94 * Buffers are setup like this:
96 * <---------------------- size ----------------------->
97 * +---------------------------------------------------+
98 * | consumed | remaining | free space |
99 * +---------------------------------------------------+
100 * <-- off --><------- len ------->
103 * this is now in the BIO struct
105 int ibuf_size; /* how big is the input buffer */
106 int obuf_size; /* how big is the output buffer */
107 char *ibuf; /* the char array */
108 int ibuf_len; /* how many bytes are in it */
109 int ibuf_off; /* write/read offset */
110 char *obuf; /* the char array */
111 int obuf_len; /* how many bytes are in it */
112 int obuf_off; /* write/read offset */
116 const BIO_METHOD *method;
117 /* bio, mode, argp, argi, argl, ret */
118 BIO_callback_fn callback;
119 BIO_callback_fn_ex callback_ex;
120 char *cb_arg; /* first argument for the callback */
123 int flags; /* extra storage */
127 struct bio_st *next_bio; /* used by filter BIOs */
128 struct bio_st *prev_bio; /* used by filter BIOs */
129 CRYPTO_REF_COUNT references;
132 CRYPTO_EX_DATA ex_data;
136 #ifndef OPENSSL_NO_SOCK
137 # ifdef OPENSSL_SYS_VMS
138 typedef unsigned int socklen_t;
141 extern CRYPTO_RWLOCK *bio_lookup_lock;
143 int BIO_ADDR_make(BIO_ADDR *ap, const struct sockaddr *sa);
144 const struct sockaddr *BIO_ADDR_sockaddr(const BIO_ADDR *ap);
145 struct sockaddr *BIO_ADDR_sockaddr_noconst(BIO_ADDR *ap);
146 socklen_t BIO_ADDR_sockaddr_size(const BIO_ADDR *ap);
147 socklen_t BIO_ADDRINFO_sockaddr_size(const BIO_ADDRINFO *bai);
148 const struct sockaddr *BIO_ADDRINFO_sockaddr(const BIO_ADDRINFO *bai);
151 extern CRYPTO_RWLOCK *bio_type_lock;
153 void bio_sock_cleanup_int(void);
155 #if BIO_FLAGS_UPLINK==0
156 /* Shortcut UPLINK calls on most platforms... */
157 # define UP_stdin stdin
158 # define UP_stdout stdout
159 # define UP_stderr stderr
160 # define UP_fprintf fprintf
161 # define UP_fgets fgets
162 # define UP_fread fread
163 # define UP_fwrite fwrite
165 # define UP_feof feof
166 # define UP_fclose fclose
168 # define UP_fopen fopen
169 # define UP_fseek fseek
170 # define UP_ftell ftell
171 # define UP_fflush fflush
172 # define UP_ferror ferror
174 # define UP_fileno _fileno
175 # define UP_open _open
176 # define UP_read _read
177 # define UP_write _write
178 # define UP_lseek _lseek
179 # define UP_close _close
181 # define UP_fileno fileno
182 # define UP_open open
183 # define UP_read read
184 # define UP_write write
185 # define UP_lseek lseek
186 # define UP_close close