2 * Copyright 2005-2022 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
10 #include "internal/e_os.h"
11 #include "internal/sockets.h"
13 /* BEGIN BIO_ADDRINFO/BIO_ADDR stuff. */
15 #ifndef OPENSSL_NO_SOCK
17 * Throughout this file and b_addr.c, the existence of the macro
18 * AI_PASSIVE is used to detect the availability of struct addrinfo,
19 * getnameinfo() and getaddrinfo(). If that macro doesn't exist,
20 * we use our own implementation instead.
24 * It's imperative that these macros get defined before openssl/bio.h gets
25 * included. Otherwise, the AI_PASSIVE hack will not work properly.
26 * For clarity, we check for internal/cryptlib.h since it's a common header
27 * that also includes bio.h.
29 # ifdef OSSL_INTERNAL_CRYPTLIB_H
30 # error internal/cryptlib.h included before bio_local.h
33 # error openssl/bio.h included before bio_local.h
39 * There's a bug in VMS C header file netdb.h, where struct addrinfo
40 * always is the P32 variant, but the functions that handle that structure,
41 * such as getaddrinfo() and freeaddrinfo() adapt to the initial pointer
42 * size. The easiest workaround is to force struct addrinfo to be the
43 * 64-bit variant when compiling in P64 mode.
45 # if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE == 64
46 # define addrinfo __addrinfo64
49 # define bio_addrinfo_st addrinfo
50 # define bai_family ai_family
51 # define bai_socktype ai_socktype
52 # define bai_protocol ai_protocol
53 # define bai_addrlen ai_addrlen
54 # define bai_addr ai_addr
55 # define bai_next ai_next
57 struct bio_addrinfo_st {
62 struct sockaddr *bai_addr;
63 struct bio_addrinfo_st *bai_next;
70 struct sockaddr_in6 s_in6;
72 struct sockaddr_in s_in;
73 # ifndef OPENSSL_NO_UNIX_SOCK
74 struct sockaddr_un s_un;
79 /* END BIO_ADDRINFO/BIO_ADDR stuff. */
81 #include "internal/cryptlib.h"
82 #include "internal/bio.h"
83 #include "internal/refcount.h"
85 typedef struct bio_f_buffer_ctx_struct {
87 * Buffers are setup like this:
89 * <---------------------- size ----------------------->
90 * +---------------------------------------------------+
91 * | consumed | remaining | free space |
92 * +---------------------------------------------------+
93 * <-- off --><------- len ------->
96 * this is now in the BIO struct
98 int ibuf_size; /* how big is the input buffer */
99 int obuf_size; /* how big is the output buffer */
100 char *ibuf; /* the char array */
101 int ibuf_len; /* how many bytes are in it */
102 int ibuf_off; /* write/read offset */
103 char *obuf; /* the char array */
104 int obuf_len; /* how many bytes are in it */
105 int obuf_off; /* write/read offset */
109 OSSL_LIB_CTX *libctx;
110 const BIO_METHOD *method;
111 /* bio, mode, argp, argi, argl, ret */
112 #ifndef OPENSSL_NO_DEPRECATED_3_0
113 BIO_callback_fn callback;
115 BIO_callback_fn_ex callback_ex;
116 char *cb_arg; /* first argument for the callback */
119 int flags; /* extra storage */
123 struct bio_st *next_bio; /* used by filter BIOs */
124 struct bio_st *prev_bio; /* used by filter BIOs */
125 CRYPTO_REF_COUNT references;
128 CRYPTO_EX_DATA ex_data;
132 #ifndef OPENSSL_NO_SOCK
133 # ifdef OPENSSL_SYS_VMS
134 typedef unsigned int socklen_t;
137 extern CRYPTO_RWLOCK *bio_lookup_lock;
139 int BIO_ADDR_make(BIO_ADDR *ap, const struct sockaddr *sa);
140 const struct sockaddr *BIO_ADDR_sockaddr(const BIO_ADDR *ap);
141 struct sockaddr *BIO_ADDR_sockaddr_noconst(BIO_ADDR *ap);
142 socklen_t BIO_ADDR_sockaddr_size(const BIO_ADDR *ap);
143 socklen_t BIO_ADDRINFO_sockaddr_size(const BIO_ADDRINFO *bai);
144 const struct sockaddr *BIO_ADDRINFO_sockaddr(const BIO_ADDRINFO *bai);
146 # if defined(OPENSSL_SYS_WINDOWS) && defined(WSAID_WSARECVMSG)
147 # define BIO_HAVE_WSAMSG
148 extern LPFN_WSARECVMSG bio_WSARecvMsg;
149 extern LPFN_WSASENDMSG bio_WSASendMsg;
153 extern CRYPTO_RWLOCK *bio_type_lock;
155 void bio_sock_cleanup_int(void);
157 #if BIO_FLAGS_UPLINK_INTERNAL==0
158 /* Shortcut UPLINK calls on most platforms... */
159 # define UP_stdin stdin
160 # define UP_stdout stdout
161 # define UP_stderr stderr
162 # define UP_fprintf fprintf
163 # define UP_fgets fgets
164 # define UP_fread fread
165 # define UP_fwrite fwrite
167 # define UP_feof feof
168 # define UP_fclose fclose
170 # define UP_fopen fopen
171 # define UP_fseek fseek
172 # define UP_ftell ftell
173 # define UP_fflush fflush
174 # define UP_ferror ferror
176 # define UP_fileno _fileno
177 # define UP_open _open
178 # define UP_read _read
179 # define UP_write _write
180 # define UP_lseek _lseek
181 # define UP_close _close
183 # define UP_fileno fileno
184 # define UP_open open
185 # define UP_read read
186 # define UP_write write
187 # define UP_lseek lseek
188 # define UP_close close