[331] | 1 | /*
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| 2 | * Copyright 2005-2016 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #define USE_SOCKETS
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| 11 | #include "e_os.h"
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| 12 |
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| 13 | /* BEGIN BIO_ADDRINFO/BIO_ADDR stuff. */
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| 14 |
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| 15 | #ifndef OPENSSL_NO_SOCK
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| 16 | /*
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| 17 | * Throughout this file and b_addr.c, the existence of the macro
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| 18 | * AI_PASSIVE is used to detect the availability of struct addrinfo,
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| 19 | * getnameinfo() and getaddrinfo(). If that macro doesn't exist,
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| 20 | * we use our own implementation instead.
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| 21 | */
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| 22 |
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| 23 | /*
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| 24 | * It's imperative that these macros get defined before openssl/bio.h gets
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| 25 | * included. Otherwise, the AI_PASSIVE hack will not work properly.
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| 26 | * For clarity, we check for internal/cryptlib.h since it's a common header
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| 27 | * that also includes bio.h.
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| 28 | */
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| 29 | # ifdef HEADER_CRYPTLIB_H
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| 30 | # error internal/cryptlib.h included before bio_lcl.h
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| 31 | # endif
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| 32 | # ifdef HEADER_BIO_H
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| 33 | # error openssl/bio.h included before bio_lcl.h
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| 34 | # endif
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| 35 |
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| 36 | /*
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| 37 | * Undefine AF_UNIX on systems that define it but don't support it.
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| 38 | */
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| 39 | # if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_VMS)
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| 40 | # undef AF_UNIX
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| 41 | # endif
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| 42 |
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| 43 | # ifdef AI_PASSIVE
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| 44 |
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| 45 | /*
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| 46 | * There's a bug in VMS C header file netdb.h, where struct addrinfo
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| 47 | * always is the P32 variant, but the functions that handle that structure,
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| 48 | * such as getaddrinfo() and freeaddrinfo() adapt to the initial pointer
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| 49 | * size. The easiest workaround is to force struct addrinfo to be the
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| 50 | * 64-bit variant when compiling in P64 mode.
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| 51 | */
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| 52 | # if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE == 64
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| 53 | # define addrinfo __addrinfo64
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| 54 | # endif
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| 55 |
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| 56 | # define bio_addrinfo_st addrinfo
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| 57 | # define bai_family ai_family
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| 58 | # define bai_socktype ai_socktype
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| 59 | # define bai_protocol ai_protocol
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| 60 | # define bai_addrlen ai_addrlen
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| 61 | # define bai_addr ai_addr
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| 62 | # define bai_next ai_next
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| 63 | # else
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| 64 | struct bio_addrinfo_st {
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| 65 | int bai_family;
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| 66 | int bai_socktype;
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| 67 | int bai_protocol;
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| 68 | size_t bai_addrlen;
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| 69 | struct sockaddr *bai_addr;
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| 70 | struct bio_addrinfo_st *bai_next;
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| 71 | };
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| 72 | # endif
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| 73 |
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| 74 | union bio_addr_st {
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| 75 | struct sockaddr sa;
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| 76 | # ifdef AF_INET6
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| 77 | struct sockaddr_in6 s_in6;
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| 78 | # endif
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| 79 | struct sockaddr_in s_in;
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| 80 | # ifdef AF_UNIX
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| 81 | struct sockaddr_un s_un;
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| 82 | # endif
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| 83 | };
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| 84 | #endif
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| 85 |
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| 86 | /* END BIO_ADDRINFO/BIO_ADDR stuff. */
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| 87 |
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| 88 | #include "internal/cryptlib.h"
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| 89 | #include <internal/bio.h>
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| 90 |
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| 91 | typedef struct bio_f_buffer_ctx_struct {
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| 92 | /*-
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| 93 | * Buffers are setup like this:
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| 94 | *
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| 95 | * <---------------------- size ----------------------->
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| 96 | * +---------------------------------------------------+
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| 97 | * | consumed | remaining | free space |
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| 98 | * +---------------------------------------------------+
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| 99 | * <-- off --><------- len ------->
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| 100 | */
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| 101 | /*- BIO *bio; *//*
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| 102 | * this is now in the BIO struct
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| 103 | */
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| 104 | int ibuf_size; /* how big is the input buffer */
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| 105 | int obuf_size; /* how big is the output buffer */
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| 106 | char *ibuf; /* the char array */
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| 107 | int ibuf_len; /* how many bytes are in it */
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| 108 | int ibuf_off; /* write/read offset */
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| 109 | char *obuf; /* the char array */
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| 110 | int obuf_len; /* how many bytes are in it */
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| 111 | int obuf_off; /* write/read offset */
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| 112 | } BIO_F_BUFFER_CTX;
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| 113 |
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| 114 | struct bio_st {
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| 115 | const BIO_METHOD *method;
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| 116 | /* bio, mode, argp, argi, argl, ret */
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| 117 | long (*callback) (struct bio_st *, int, const char *, int, long, long);
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| 118 | char *cb_arg; /* first argument for the callback */
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| 119 | int init;
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| 120 | int shutdown;
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| 121 | int flags; /* extra storage */
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| 122 | int retry_reason;
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| 123 | int num;
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| 124 | void *ptr;
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| 125 | struct bio_st *next_bio; /* used by filter BIOs */
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| 126 | struct bio_st *prev_bio; /* used by filter BIOs */
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| 127 | int references;
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| 128 | uint64_t num_read;
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| 129 | uint64_t num_write;
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| 130 | CRYPTO_EX_DATA ex_data;
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| 131 | CRYPTO_RWLOCK *lock;
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| 132 | };
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| 133 |
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| 134 | #ifndef OPENSSL_NO_SOCK
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| 135 | # ifdef OPENSSL_SYS_VMS
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| 136 | typedef unsigned int socklen_t;
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| 137 | # endif
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| 138 |
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| 139 | extern CRYPTO_RWLOCK *bio_lookup_lock;
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| 140 |
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| 141 | int BIO_ADDR_make(BIO_ADDR *ap, const struct sockaddr *sa);
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| 142 | const struct sockaddr *BIO_ADDR_sockaddr(const BIO_ADDR *ap);
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| 143 | struct sockaddr *BIO_ADDR_sockaddr_noconst(BIO_ADDR *ap);
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| 144 | socklen_t BIO_ADDR_sockaddr_size(const BIO_ADDR *ap);
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| 145 | socklen_t BIO_ADDRINFO_sockaddr_size(const BIO_ADDRINFO *bai);
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| 146 | const struct sockaddr *BIO_ADDRINFO_sockaddr(const BIO_ADDRINFO *bai);
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| 147 | #endif
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| 148 |
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| 149 | extern CRYPTO_RWLOCK *bio_type_lock;
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| 150 |
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| 151 | void bio_sock_cleanup_int(void);
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| 152 |
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| 153 | #if BIO_FLAGS_UPLINK==0
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| 154 | /* Shortcut UPLINK calls on most platforms... */
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| 155 | # define UP_stdin stdin
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| 156 | # define UP_stdout stdout
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| 157 | # define UP_stderr stderr
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| 158 | # define UP_fprintf fprintf
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| 159 | # define UP_fgets fgets
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| 160 | # define UP_fread fread
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| 161 | # define UP_fwrite fwrite
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| 162 | # undef UP_fsetmod
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| 163 | # define UP_feof feof
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| 164 | # define UP_fclose fclose
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| 165 |
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| 166 | # define UP_fopen fopen
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| 167 | # define UP_fseek fseek
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| 168 | # define UP_ftell ftell
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| 169 | # define UP_fflush fflush
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| 170 | # define UP_ferror ferror
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| 171 | # ifdef _WIN32
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| 172 | # define UP_fileno _fileno
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| 173 | # define UP_open _open
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| 174 | # define UP_read _read
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| 175 | # define UP_write _write
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| 176 | # define UP_lseek _lseek
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| 177 | # define UP_close _close
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| 178 | # else
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| 179 | # define UP_fileno fileno
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| 180 | # define UP_open open
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| 181 | # define UP_read read
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| 182 | # define UP_write write
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| 183 | # define UP_lseek lseek
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| 184 | # define UP_close close
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| 185 | # endif
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| 186 |
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| 187 | #endif
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| 188 |
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