959 lines
28 KiB
C
959 lines
28 KiB
C
/* crypto/bio/b_sock.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#define USE_SOCKETS
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#include "cryptlib.h"
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#include <openssl/bio.h>
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#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK)
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# include <netdb.h>
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# if defined(NETWARE_CLIB)
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# include <sys/ioctl.h>
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NETDB_DEFINE_CONTEXT
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# endif
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#endif
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#ifndef OPENSSL_NO_SOCK
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# include <openssl/dso.h>
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# define SOCKET_PROTOCOL IPPROTO_TCP
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# ifdef SO_MAXCONN
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# define MAX_LISTEN SO_MAXCONN
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# elif defined(SOMAXCONN)
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# define MAX_LISTEN SOMAXCONN
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# else
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# define MAX_LISTEN 32
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# endif
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# if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK))
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static int wsa_init_done = 0;
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# endif
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/*
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* WSAAPI specifier is required to make indirect calls to run-time
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* linked WinSock 2 functions used in this module, to be specific
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* [get|free]addrinfo and getnameinfo. This is because WinSock uses
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* uses non-C calling convention, __stdcall vs. __cdecl, on x86
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* Windows. On non-WinSock platforms WSAAPI needs to be void.
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*/
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# ifndef WSAAPI
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# define WSAAPI
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# endif
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# if 0
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static unsigned long BIO_ghbn_hits = 0L;
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static unsigned long BIO_ghbn_miss = 0L;
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# define GHBN_NUM 4
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static struct ghbn_cache_st {
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char name[129];
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struct hostent *ent;
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unsigned long order;
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} ghbn_cache[GHBN_NUM];
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# endif
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static int get_ip(const char *str, unsigned char *ip);
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# if 0
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static void ghbn_free(struct hostent *a);
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static struct hostent *ghbn_dup(struct hostent *a);
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# endif
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int BIO_get_host_ip(const char *str, unsigned char *ip)
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{
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int i;
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int err = 1;
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int locked = 0;
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struct hostent *he;
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i = get_ip(str, ip);
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if (i < 0) {
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BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_INVALID_IP_ADDRESS);
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goto err;
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}
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/*
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* At this point, we have something that is most probably correct in some
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* way, so let's init the socket.
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*/
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if (BIO_sock_init() != 1)
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return 0; /* don't generate another error code here */
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/*
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* If the string actually contained an IP address, we need not do
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* anything more
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*/
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if (i > 0)
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return (1);
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/* do a gethostbyname */
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CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
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locked = 1;
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he = BIO_gethostbyname(str);
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if (he == NULL) {
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BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_BAD_HOSTNAME_LOOKUP);
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goto err;
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}
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/* cast to short because of win16 winsock definition */
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if ((short)he->h_addrtype != AF_INET) {
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BIOerr(BIO_F_BIO_GET_HOST_IP,
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BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
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goto err;
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}
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for (i = 0; i < 4; i++)
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ip[i] = he->h_addr_list[0][i];
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err = 0;
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err:
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if (locked)
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CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
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if (err) {
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ERR_add_error_data(2, "host=", str);
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return 0;
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} else
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return 1;
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}
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int BIO_get_port(const char *str, unsigned short *port_ptr)
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{
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int i;
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struct servent *s;
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if (str == NULL) {
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BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED);
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return (0);
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}
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i = atoi(str);
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if (i != 0)
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*port_ptr = (unsigned short)i;
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else {
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CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME);
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/*
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* Note: under VMS with SOCKETSHR, it seems like the first parameter
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* is 'char *', instead of 'const char *'
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*/
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# ifndef CONST_STRICT
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s = getservbyname((char *)str, "tcp");
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# else
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s = getservbyname(str, "tcp");
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# endif
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if (s != NULL)
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*port_ptr = ntohs((unsigned short)s->s_port);
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CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME);
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if (s == NULL) {
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if (strcmp(str, "http") == 0)
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*port_ptr = 80;
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else if (strcmp(str, "telnet") == 0)
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*port_ptr = 23;
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else if (strcmp(str, "socks") == 0)
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*port_ptr = 1080;
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else if (strcmp(str, "https") == 0)
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*port_ptr = 443;
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else if (strcmp(str, "ssl") == 0)
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*port_ptr = 443;
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else if (strcmp(str, "ftp") == 0)
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*port_ptr = 21;
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else if (strcmp(str, "gopher") == 0)
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*port_ptr = 70;
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# if 0
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else if (strcmp(str, "wais") == 0)
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*port_ptr = 21;
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# endif
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else {
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SYSerr(SYS_F_GETSERVBYNAME, get_last_socket_error());
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ERR_add_error_data(3, "service='", str, "'");
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return (0);
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}
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}
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}
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return (1);
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}
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int BIO_sock_error(int sock)
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{
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int j, i;
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int size;
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# if defined(OPENSSL_SYS_BEOS_R5)
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return 0;
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# endif
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size = sizeof(int);
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/*
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* Note: under Windows the third parameter is of type (char *) whereas
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* under other systems it is (void *) if you don't have a cast it will
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* choke the compiler: if you do have a cast then you can either go for
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* (char *) or (void *).
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*/
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i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, (void *)&size);
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if (i < 0)
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return (1);
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else
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return (j);
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}
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# if 0
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long BIO_ghbn_ctrl(int cmd, int iarg, char *parg)
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{
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int i;
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char **p;
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switch (cmd) {
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case BIO_GHBN_CTRL_HITS:
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return (BIO_ghbn_hits);
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/* break; */
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case BIO_GHBN_CTRL_MISSES:
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return (BIO_ghbn_miss);
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/* break; */
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case BIO_GHBN_CTRL_CACHE_SIZE:
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return (GHBN_NUM);
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/* break; */
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case BIO_GHBN_CTRL_GET_ENTRY:
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if ((iarg >= 0) && (iarg < GHBN_NUM) && (ghbn_cache[iarg].order > 0)) {
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p = (char **)parg;
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if (p == NULL)
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return (0);
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*p = ghbn_cache[iarg].name;
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ghbn_cache[iarg].name[128] = '\0';
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return (1);
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}
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return (0);
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/* break; */
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case BIO_GHBN_CTRL_FLUSH:
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for (i = 0; i < GHBN_NUM; i++)
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ghbn_cache[i].order = 0;
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break;
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default:
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return (0);
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}
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return (1);
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}
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# endif
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# if 0
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static struct hostent *ghbn_dup(struct hostent *a)
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{
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struct hostent *ret;
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int i, j;
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MemCheck_off();
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ret = (struct hostent *)OPENSSL_malloc(sizeof(struct hostent));
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if (ret == NULL)
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return (NULL);
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memset(ret, 0, sizeof(struct hostent));
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for (i = 0; a->h_aliases[i] != NULL; i++) ;
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i++;
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ret->h_aliases = (char **)OPENSSL_malloc(i * sizeof(char *));
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if (ret->h_aliases == NULL)
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goto err;
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memset(ret->h_aliases, 0, i * sizeof(char *));
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for (i = 0; a->h_addr_list[i] != NULL; i++) ;
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i++;
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ret->h_addr_list = (char **)OPENSSL_malloc(i * sizeof(char *));
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if (ret->h_addr_list == NULL)
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goto err;
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memset(ret->h_addr_list, 0, i * sizeof(char *));
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j = strlen(a->h_name) + 1;
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if ((ret->h_name = OPENSSL_malloc(j)) == NULL)
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goto err;
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memcpy((char *)ret->h_name, a->h_name, j);
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for (i = 0; a->h_aliases[i] != NULL; i++) {
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j = strlen(a->h_aliases[i]) + 1;
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if ((ret->h_aliases[i] = OPENSSL_malloc(j)) == NULL)
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goto err;
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memcpy(ret->h_aliases[i], a->h_aliases[i], j);
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}
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ret->h_length = a->h_length;
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ret->h_addrtype = a->h_addrtype;
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for (i = 0; a->h_addr_list[i] != NULL; i++) {
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if ((ret->h_addr_list[i] = OPENSSL_malloc(a->h_length)) == NULL)
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goto err;
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memcpy(ret->h_addr_list[i], a->h_addr_list[i], a->h_length);
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}
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if (0) {
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err:
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if (ret != NULL)
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ghbn_free(ret);
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ret = NULL;
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}
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MemCheck_on();
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return (ret);
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}
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static void ghbn_free(struct hostent *a)
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{
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int i;
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if (a == NULL)
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return;
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if (a->h_aliases != NULL) {
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for (i = 0; a->h_aliases[i] != NULL; i++)
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OPENSSL_free(a->h_aliases[i]);
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OPENSSL_free(a->h_aliases);
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}
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if (a->h_addr_list != NULL) {
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for (i = 0; a->h_addr_list[i] != NULL; i++)
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OPENSSL_free(a->h_addr_list[i]);
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OPENSSL_free(a->h_addr_list);
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}
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if (a->h_name != NULL)
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OPENSSL_free(a->h_name);
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OPENSSL_free(a);
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}
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# endif
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struct hostent *BIO_gethostbyname(const char *name)
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{
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# if 1
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/*
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* Caching gethostbyname() results forever is wrong, so we have to let
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* the true gethostbyname() worry about this
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*/
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# if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__))
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return gethostbyname((char *)name);
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# else
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return gethostbyname(name);
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# endif
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# else
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struct hostent *ret;
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int i, lowi = 0, j;
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unsigned long low = (unsigned long)-1;
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# if 0
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/*
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* It doesn't make sense to use locking here: The function interface is
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* not thread-safe, because threads can never be sure when some other
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* thread destroys the data they were given a pointer to.
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*/
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CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
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# endif
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j = strlen(name);
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if (j < 128) {
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for (i = 0; i < GHBN_NUM; i++) {
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if (low > ghbn_cache[i].order) {
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low = ghbn_cache[i].order;
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lowi = i;
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}
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if (ghbn_cache[i].order > 0) {
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if (strncmp(name, ghbn_cache[i].name, 128) == 0)
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break;
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}
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}
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} else
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i = GHBN_NUM;
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if (i == GHBN_NUM) { /* no hit */
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BIO_ghbn_miss++;
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/*
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* Note: under VMS with SOCKETSHR, it seems like the first parameter
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* is 'char *', instead of 'const char *'
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*/
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# ifndef CONST_STRICT
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ret = gethostbyname((char *)name);
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# else
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ret = gethostbyname(name);
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# endif
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if (ret == NULL)
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goto end;
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if (j > 128) { /* too big to cache */
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# if 0
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/*
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* If we were trying to make this function thread-safe (which is
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* bound to fail), we'd have to give up in this case (or allocate
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* more memory).
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*/
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ret = NULL;
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# endif
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goto end;
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}
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/* else add to cache */
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if (ghbn_cache[lowi].ent != NULL)
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ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */
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ghbn_cache[lowi].name[0] = '\0';
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if ((ret = ghbn_cache[lowi].ent = ghbn_dup(ret)) == NULL) {
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BIOerr(BIO_F_BIO_GETHOSTBYNAME, ERR_R_MALLOC_FAILURE);
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goto end;
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}
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strncpy(ghbn_cache[lowi].name, name, 128);
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ghbn_cache[lowi].order = BIO_ghbn_miss + BIO_ghbn_hits;
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} else {
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BIO_ghbn_hits++;
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ret = ghbn_cache[i].ent;
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ghbn_cache[i].order = BIO_ghbn_miss + BIO_ghbn_hits;
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}
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end:
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# if 0
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CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
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# endif
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return (ret);
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# endif
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}
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int BIO_sock_init(void)
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{
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# ifdef OPENSSL_SYS_WINDOWS
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static struct WSAData wsa_state;
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if (!wsa_init_done) {
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int err;
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wsa_init_done = 1;
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memset(&wsa_state, 0, sizeof(wsa_state));
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/*
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* Not making wsa_state available to the rest of the code is formally
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* wrong. But the structures we use are [beleived to be] invariable
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* among Winsock DLLs, while API availability is [expected to be]
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* probed at run-time with DSO_global_lookup.
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*/
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if (WSAStartup(0x0202, &wsa_state) != 0) {
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err = WSAGetLastError();
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SYSerr(SYS_F_WSASTARTUP, err);
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BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
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return (-1);
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}
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}
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# endif /* OPENSSL_SYS_WINDOWS */
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# ifdef WATT32
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extern int _watt_do_exit;
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_watt_do_exit = 0; /* don't make sock_init() call exit() */
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if (sock_init())
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return (-1);
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# endif
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# if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
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WORD wVerReq;
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WSADATA wsaData;
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int err;
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if (!wsa_init_done) {
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wsa_init_done = 1;
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wVerReq = MAKEWORD(2, 0);
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err = WSAStartup(wVerReq, &wsaData);
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if (err != 0) {
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SYSerr(SYS_F_WSASTARTUP, err);
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BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
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return (-1);
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}
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}
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# endif
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return (1);
|
|
}
|
|
|
|
void BIO_sock_cleanup(void)
|
|
{
|
|
# ifdef OPENSSL_SYS_WINDOWS
|
|
if (wsa_init_done) {
|
|
wsa_init_done = 0;
|
|
# if 0 /* this call is claimed to be non-present in
|
|
* Winsock2 */
|
|
WSACancelBlockingCall();
|
|
# endif
|
|
WSACleanup();
|
|
}
|
|
# elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
|
|
if (wsa_init_done) {
|
|
wsa_init_done = 0;
|
|
WSACleanup();
|
|
}
|
|
# endif
|
|
}
|
|
|
|
# if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000
|
|
|
|
int BIO_socket_ioctl(int fd, long type, void *arg)
|
|
{
|
|
int i;
|
|
|
|
# ifdef __DJGPP__
|
|
i = ioctlsocket(fd, type, (char *)arg);
|
|
# else
|
|
# if defined(OPENSSL_SYS_VMS)
|
|
/*-
|
|
* 2011-02-18 SMS.
|
|
* VMS ioctl() can't tolerate a 64-bit "void *arg", but we
|
|
* observe that all the consumers pass in an "unsigned long *",
|
|
* so we arrange a local copy with a short pointer, and use
|
|
* that, instead.
|
|
*/
|
|
# if __INITIAL_POINTER_SIZE == 64
|
|
# define ARG arg_32p
|
|
# pragma pointer_size save
|
|
# pragma pointer_size 32
|
|
unsigned long arg_32;
|
|
unsigned long *arg_32p;
|
|
# pragma pointer_size restore
|
|
arg_32p = &arg_32;
|
|
arg_32 = *((unsigned long *)arg);
|
|
# else /* __INITIAL_POINTER_SIZE == 64 */
|
|
# define ARG arg
|
|
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
|
|
# else /* defined(OPENSSL_SYS_VMS) */
|
|
# define ARG arg
|
|
# endif /* defined(OPENSSL_SYS_VMS) [else] */
|
|
|
|
i = ioctlsocket(fd, type, ARG);
|
|
# endif /* __DJGPP__ */
|
|
if (i < 0)
|
|
SYSerr(SYS_F_IOCTLSOCKET, get_last_socket_error());
|
|
return (i);
|
|
}
|
|
# endif /* __VMS_VER */
|
|
|
|
/*
|
|
* The reason I have implemented this instead of using sscanf is because
|
|
* Visual C 1.52c gives an unresolved external when linking a DLL :-(
|
|
*/
|
|
static int get_ip(const char *str, unsigned char ip[4])
|
|
{
|
|
unsigned int tmp[4];
|
|
int num = 0, c, ok = 0;
|
|
|
|
tmp[0] = tmp[1] = tmp[2] = tmp[3] = 0;
|
|
|
|
for (;;) {
|
|
c = *(str++);
|
|
if ((c >= '0') && (c <= '9')) {
|
|
ok = 1;
|
|
tmp[num] = tmp[num] * 10 + c - '0';
|
|
if (tmp[num] > 255)
|
|
return (0);
|
|
} else if (c == '.') {
|
|
if (!ok)
|
|
return (-1);
|
|
if (num == 3)
|
|
return (0);
|
|
num++;
|
|
ok = 0;
|
|
} else if (c == '\0' && (num == 3) && ok)
|
|
break;
|
|
else
|
|
return (0);
|
|
}
|
|
ip[0] = tmp[0];
|
|
ip[1] = tmp[1];
|
|
ip[2] = tmp[2];
|
|
ip[3] = tmp[3];
|
|
return (1);
|
|
}
|
|
|
|
int BIO_get_accept_socket(char *host, int bind_mode)
|
|
{
|
|
int ret = 0;
|
|
union {
|
|
struct sockaddr sa;
|
|
struct sockaddr_in sa_in;
|
|
# if OPENSSL_USE_IPV6
|
|
struct sockaddr_in6 sa_in6;
|
|
# endif
|
|
} server, client;
|
|
int s = INVALID_SOCKET, cs, addrlen;
|
|
unsigned char ip[4];
|
|
unsigned short port;
|
|
char *str = NULL, *e;
|
|
char *h, *p;
|
|
unsigned long l;
|
|
int err_num;
|
|
|
|
if (BIO_sock_init() != 1)
|
|
return (INVALID_SOCKET);
|
|
|
|
if ((str = BUF_strdup(host)) == NULL)
|
|
return (INVALID_SOCKET);
|
|
|
|
h = p = NULL;
|
|
h = str;
|
|
for (e = str; *e; e++) {
|
|
if (*e == ':') {
|
|
p = e;
|
|
} else if (*e == '/') {
|
|
*e = '\0';
|
|
break;
|
|
}
|
|
}
|
|
if (p)
|
|
*p++ = '\0'; /* points at last ':', '::port' is special
|
|
* [see below] */
|
|
else
|
|
p = h, h = NULL;
|
|
|
|
# ifdef EAI_FAMILY
|
|
do {
|
|
static union {
|
|
void *p;
|
|
int (WSAAPI *f) (const char *, const char *,
|
|
const struct addrinfo *, struct addrinfo **);
|
|
} p_getaddrinfo = {
|
|
NULL
|
|
};
|
|
static union {
|
|
void *p;
|
|
void (WSAAPI *f) (struct addrinfo *);
|
|
} p_freeaddrinfo = {
|
|
NULL
|
|
};
|
|
struct addrinfo *res, hint;
|
|
|
|
if (p_getaddrinfo.p == NULL) {
|
|
if ((p_getaddrinfo.p = DSO_global_lookup("getaddrinfo")) == NULL
|
|
|| (p_freeaddrinfo.p =
|
|
DSO_global_lookup("freeaddrinfo")) == NULL)
|
|
p_getaddrinfo.p = (void *)-1;
|
|
}
|
|
if (p_getaddrinfo.p == (void *)-1)
|
|
break;
|
|
|
|
/*
|
|
* '::port' enforces IPv6 wildcard listener. Some OSes, e.g. Solaris,
|
|
* default to IPv6 without any hint. Also note that commonly IPv6
|
|
* wildchard socket can service IPv4 connections just as well...
|
|
*/
|
|
memset(&hint, 0, sizeof(hint));
|
|
hint.ai_flags = AI_PASSIVE;
|
|
if (h) {
|
|
if (strchr(h, ':')) {
|
|
if (h[1] == '\0')
|
|
h = NULL;
|
|
# if OPENSSL_USE_IPV6
|
|
hint.ai_family = AF_INET6;
|
|
# else
|
|
h = NULL;
|
|
# endif
|
|
} else if (h[0] == '*' && h[1] == '\0') {
|
|
hint.ai_family = AF_INET;
|
|
h = NULL;
|
|
}
|
|
}
|
|
|
|
if ((*p_getaddrinfo.f) (h, p, &hint, &res))
|
|
break;
|
|
|
|
addrlen = res->ai_addrlen <= sizeof(server) ?
|
|
res->ai_addrlen : sizeof(server);
|
|
memcpy(&server, res->ai_addr, addrlen);
|
|
|
|
(*p_freeaddrinfo.f) (res);
|
|
goto again;
|
|
} while (0);
|
|
# endif
|
|
|
|
if (!BIO_get_port(p, &port))
|
|
goto err;
|
|
|
|
memset((char *)&server, 0, sizeof(server));
|
|
server.sa_in.sin_family = AF_INET;
|
|
server.sa_in.sin_port = htons(port);
|
|
addrlen = sizeof(server.sa_in);
|
|
|
|
if (h == NULL || strcmp(h, "*") == 0)
|
|
server.sa_in.sin_addr.s_addr = INADDR_ANY;
|
|
else {
|
|
if (!BIO_get_host_ip(h, &(ip[0])))
|
|
goto err;
|
|
l = (unsigned long)
|
|
((unsigned long)ip[0] << 24L) |
|
|
((unsigned long)ip[1] << 16L) |
|
|
((unsigned long)ip[2] << 8L) | ((unsigned long)ip[3]);
|
|
server.sa_in.sin_addr.s_addr = htonl(l);
|
|
}
|
|
|
|
again:
|
|
s = socket(server.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL);
|
|
if (s == INVALID_SOCKET) {
|
|
SYSerr(SYS_F_SOCKET, get_last_socket_error());
|
|
ERR_add_error_data(3, "port='", host, "'");
|
|
BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_CREATE_SOCKET);
|
|
goto err;
|
|
}
|
|
# ifdef SO_REUSEADDR
|
|
if (bind_mode == BIO_BIND_REUSEADDR) {
|
|
int i = 1;
|
|
|
|
ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&i, sizeof(i));
|
|
bind_mode = BIO_BIND_NORMAL;
|
|
}
|
|
# endif
|
|
if (bind(s, &server.sa, addrlen) == -1) {
|
|
# ifdef SO_REUSEADDR
|
|
err_num = get_last_socket_error();
|
|
if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
|
|
# ifdef OPENSSL_SYS_WINDOWS
|
|
/*
|
|
* Some versions of Windows define EADDRINUSE to a dummy value.
|
|
*/
|
|
(err_num == WSAEADDRINUSE))
|
|
# else
|
|
(err_num == EADDRINUSE))
|
|
# endif
|
|
{
|
|
client = server;
|
|
if (h == NULL || strcmp(h, "*") == 0) {
|
|
# if OPENSSL_USE_IPV6
|
|
if (client.sa.sa_family == AF_INET6) {
|
|
memset(&client.sa_in6.sin6_addr, 0,
|
|
sizeof(client.sa_in6.sin6_addr));
|
|
client.sa_in6.sin6_addr.s6_addr[15] = 1;
|
|
} else
|
|
# endif
|
|
if (client.sa.sa_family == AF_INET) {
|
|
client.sa_in.sin_addr.s_addr = htonl(0x7F000001);
|
|
} else
|
|
goto err;
|
|
}
|
|
cs = socket(client.sa.sa_family, SOCK_STREAM, SOCKET_PROTOCOL);
|
|
if (cs != INVALID_SOCKET) {
|
|
int ii;
|
|
ii = connect(cs, &client.sa, addrlen);
|
|
closesocket(cs);
|
|
if (ii == INVALID_SOCKET) {
|
|
bind_mode = BIO_BIND_REUSEADDR;
|
|
closesocket(s);
|
|
goto again;
|
|
}
|
|
/* else error */
|
|
}
|
|
/* else error */
|
|
}
|
|
# endif
|
|
SYSerr(SYS_F_BIND, err_num);
|
|
ERR_add_error_data(3, "port='", host, "'");
|
|
BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_BIND_SOCKET);
|
|
goto err;
|
|
}
|
|
if (listen(s, MAX_LISTEN) == -1) {
|
|
SYSerr(SYS_F_BIND, get_last_socket_error());
|
|
ERR_add_error_data(3, "port='", host, "'");
|
|
BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET, BIO_R_UNABLE_TO_LISTEN_SOCKET);
|
|
goto err;
|
|
}
|
|
ret = 1;
|
|
err:
|
|
if (str != NULL)
|
|
OPENSSL_free(str);
|
|
if ((ret == 0) && (s != INVALID_SOCKET)) {
|
|
closesocket(s);
|
|
s = INVALID_SOCKET;
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
int BIO_accept(int sock, char **addr)
|
|
{
|
|
int ret = INVALID_SOCKET;
|
|
unsigned long l;
|
|
unsigned short port;
|
|
char *p;
|
|
|
|
struct {
|
|
/*
|
|
* As for following union. Trouble is that there are platforms
|
|
* that have socklen_t and there are platforms that don't, on
|
|
* some platforms socklen_t is int and on some size_t. So what
|
|
* one can do? One can cook #ifdef spaghetti, which is nothing
|
|
* but masochistic. Or one can do union between int and size_t.
|
|
* One naturally does it primarily for 64-bit platforms where
|
|
* sizeof(int) != sizeof(size_t). But would it work? Note that
|
|
* if size_t member is initialized to 0, then later int member
|
|
* assignment naturally does the job on little-endian platforms
|
|
* regardless accept's expectations! What about big-endians?
|
|
* If accept expects int*, then it works, and if size_t*, then
|
|
* length value would appear as unreasonably large. But this
|
|
* won't prevent it from filling in the address structure. The
|
|
* trouble of course would be if accept returns more data than
|
|
* actual buffer can accomodate and overwrite stack... That's
|
|
* where early OPENSSL_assert comes into picture. Besides, the
|
|
* only 64-bit big-endian platform found so far that expects
|
|
* size_t* is HP-UX, where stack grows towards higher address.
|
|
* <appro>
|
|
*/
|
|
union {
|
|
size_t s;
|
|
int i;
|
|
} len;
|
|
union {
|
|
struct sockaddr sa;
|
|
struct sockaddr_in sa_in;
|
|
# if OPENSSL_USE_IPV6
|
|
struct sockaddr_in6 sa_in6;
|
|
# endif
|
|
} from;
|
|
} sa;
|
|
|
|
sa.len.s = 0;
|
|
sa.len.i = sizeof(sa.from);
|
|
memset(&sa.from, 0, sizeof(sa.from));
|
|
ret = accept(sock, &sa.from.sa, (void *)&sa.len);
|
|
if (sizeof(sa.len.i) != sizeof(sa.len.s) && sa.len.i == 0) {
|
|
OPENSSL_assert(sa.len.s <= sizeof(sa.from));
|
|
sa.len.i = (int)sa.len.s;
|
|
/* use sa.len.i from this point */
|
|
}
|
|
if (ret == INVALID_SOCKET) {
|
|
if (BIO_sock_should_retry(ret))
|
|
return -2;
|
|
SYSerr(SYS_F_ACCEPT, get_last_socket_error());
|
|
BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
|
|
goto end;
|
|
}
|
|
|
|
if (addr == NULL)
|
|
goto end;
|
|
|
|
# ifdef EAI_FAMILY
|
|
do {
|
|
char h[NI_MAXHOST], s[NI_MAXSERV];
|
|
size_t nl;
|
|
static union {
|
|
void *p;
|
|
int (WSAAPI *f) (const struct sockaddr *, size_t /* socklen_t */ ,
|
|
char *, size_t, char *, size_t, int);
|
|
} p_getnameinfo = {
|
|
NULL
|
|
};
|
|
/*
|
|
* 2nd argument to getnameinfo is specified to be socklen_t.
|
|
* Unfortunately there is a number of environments where socklen_t is
|
|
* not defined. As it's passed by value, it's safe to pass it as
|
|
* size_t... <appro>
|
|
*/
|
|
|
|
if (p_getnameinfo.p == NULL) {
|
|
if ((p_getnameinfo.p = DSO_global_lookup("getnameinfo")) == NULL)
|
|
p_getnameinfo.p = (void *)-1;
|
|
}
|
|
if (p_getnameinfo.p == (void *)-1)
|
|
break;
|
|
|
|
if ((*p_getnameinfo.f) (&sa.from.sa, sa.len.i, h, sizeof(h), s,
|
|
sizeof(s), NI_NUMERICHOST | NI_NUMERICSERV))
|
|
break;
|
|
nl = strlen(h) + strlen(s) + 2;
|
|
p = *addr;
|
|
if (p) {
|
|
*p = '\0';
|
|
p = OPENSSL_realloc(p, nl);
|
|
} else {
|
|
p = OPENSSL_malloc(nl);
|
|
}
|
|
if (p == NULL) {
|
|
BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
|
|
goto end;
|
|
}
|
|
*addr = p;
|
|
BIO_snprintf(*addr, nl, "%s:%s", h, s);
|
|
goto end;
|
|
} while (0);
|
|
# endif
|
|
if (sa.from.sa.sa_family != AF_INET)
|
|
goto end;
|
|
l = ntohl(sa.from.sa_in.sin_addr.s_addr);
|
|
port = ntohs(sa.from.sa_in.sin_port);
|
|
if (*addr == NULL) {
|
|
if ((p = OPENSSL_malloc(24)) == NULL) {
|
|
BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
|
|
goto end;
|
|
}
|
|
*addr = p;
|
|
}
|
|
BIO_snprintf(*addr, 24, "%d.%d.%d.%d:%d",
|
|
(unsigned char)(l >> 24L) & 0xff,
|
|
(unsigned char)(l >> 16L) & 0xff,
|
|
(unsigned char)(l >> 8L) & 0xff,
|
|
(unsigned char)(l) & 0xff, port);
|
|
end:
|
|
return (ret);
|
|
}
|
|
|
|
int BIO_set_tcp_ndelay(int s, int on)
|
|
{
|
|
int ret = 0;
|
|
# if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
|
|
int opt;
|
|
|
|
# ifdef SOL_TCP
|
|
opt = SOL_TCP;
|
|
# else
|
|
# ifdef IPPROTO_TCP
|
|
opt = IPPROTO_TCP;
|
|
# endif
|
|
# endif
|
|
|
|
ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on));
|
|
# endif
|
|
return (ret == 0);
|
|
}
|
|
|
|
int BIO_socket_nbio(int s, int mode)
|
|
{
|
|
int ret = -1;
|
|
int l;
|
|
|
|
l = mode;
|
|
# ifdef FIONBIO
|
|
ret = BIO_socket_ioctl(s, FIONBIO, &l);
|
|
# endif
|
|
return (ret == 0);
|
|
}
|
|
#endif
|