2 * Copyright 2005-2021 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
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
37 * Undefine AF_UNIX on systems that define it but don't support it.
39 # if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_VMS)
46 * There's a bug in VMS C header file netdb.h, where struct addrinfo
47 * always is the P32 variant, but the functions that handle that structure,
48 * such as getaddrinfo() and freeaddrinfo() adapt to the initial pointer
49 * size. The easiest workaround is to force struct addrinfo to be the
50 * 64-bit variant when compiling in P64 mode.
52 # if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE == 64
53 # define addrinfo __addrinfo64
56 # define bio_addrinfo_st addrinfo
57 # define bai_family ai_family
58 # define bai_socktype ai_socktype
59 # define bai_protocol ai_protocol
60 # define bai_addrlen ai_addrlen
61 # define bai_addr ai_addr
62 # define bai_next ai_next
64 struct bio_addrinfo_st {
69 struct sockaddr *bai_addr;
70 struct bio_addrinfo_st *bai_next;
77 struct sockaddr_in6 s_in6;
79 struct sockaddr_in s_in;
81 struct sockaddr_un s_un;
86 /* END BIO_ADDRINFO/BIO_ADDR stuff. */
88 #include "internal/cryptlib.h"
89 #include "internal/bio.h"
90 #include "internal/refcount.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 OSSL_LIB_CTX *libctx;
117 const BIO_METHOD *method;
118 /* bio, mode, argp, argi, argl, ret */
119 #ifndef OPENSSL_NO_DEPRECATED_3_0
120 BIO_callback_fn callback;
122 BIO_callback_fn_ex callback_ex;
123 char *cb_arg; /* first argument for the callback */
126 int flags; /* extra storage */
130 struct bio_st *next_bio; /* used by filter BIOs */
131 struct bio_st *prev_bio; /* used by filter BIOs */
132 CRYPTO_REF_COUNT references;
135 CRYPTO_EX_DATA ex_data;
139 #ifndef OPENSSL_NO_SOCK
140 # ifdef OPENSSL_SYS_VMS
141 typedef unsigned int socklen_t;
144 extern CRYPTO_RWLOCK *bio_lookup_lock;
146 int BIO_ADDR_make(BIO_ADDR *ap, const struct sockaddr *sa);
147 const struct sockaddr *BIO_ADDR_sockaddr(const BIO_ADDR *ap);
148 struct sockaddr *BIO_ADDR_sockaddr_noconst(BIO_ADDR *ap);
149 socklen_t BIO_ADDR_sockaddr_size(const BIO_ADDR *ap);
150 socklen_t BIO_ADDRINFO_sockaddr_size(const BIO_ADDRINFO *bai);
151 const struct sockaddr *BIO_ADDRINFO_sockaddr(const BIO_ADDRINFO *bai);
154 extern CRYPTO_RWLOCK *bio_type_lock;
156 void bio_sock_cleanup_int(void);
158 #if BIO_FLAGS_UPLINK_INTERNAL==0
159 /* Shortcut UPLINK calls on most platforms... */
160 # define UP_stdin stdin
161 # define UP_stdout stdout
162 # define UP_stderr stderr
163 # define UP_fprintf fprintf
164 # define UP_fgets fgets
165 # define UP_fread fread
166 # define UP_fwrite fwrite
168 # define UP_feof feof
169 # define UP_fclose fclose
171 # define UP_fopen fopen
172 # define UP_fseek fseek
173 # define UP_ftell ftell
174 # define UP_fflush fflush
175 # define UP_ferror ferror
177 # define UP_fileno _fileno
178 # define UP_open _open
179 # define UP_read _read
180 # define UP_write _write
181 # define UP_lseek _lseek
182 # define UP_close _close
184 # define UP_fileno fileno
185 # define UP_open open
186 # define UP_read read
187 # define UP_write write
188 # define UP_lseek lseek
189 # define UP_close close