441 lines
13 KiB
C
441 lines
13 KiB
C
/* 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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#include "bio_lcl.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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#ifndef OPENSSL_NO_SOCK
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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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# if OPENSSL_API_COMPAT < 0x10100000L
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int BIO_get_host_ip(const char *str, unsigned char *ip)
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{
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BIO_ADDRINFO *res = NULL;
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int ret = 0;
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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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if (BIO_lookup(str, NULL, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
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size_t l;
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if (BIO_ADDRINFO_family(res) != 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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} else {
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BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), NULL, &l);
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/* Because only AF_INET addresses will reach this far,
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we can assert that l should be 4 */
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OPENSSL_assert(l == 4);
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BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), ip, &l);
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ret = 1;
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}
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BIO_ADDRINFO_free(res);
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} else {
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ERR_add_error_data(2, "host=", str);
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}
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return ret;
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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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BIO_ADDRINFO *res = NULL;
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int ret = 0;
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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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if (BIO_sock_init() != 1)
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return 0; /* don't generate another error code here */
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if (BIO_lookup(NULL, str, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
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if (BIO_ADDRINFO_family(res) != AF_INET) {
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BIOerr(BIO_F_BIO_GET_PORT,
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BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET);
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} else {
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*port_ptr = ntohs(BIO_ADDR_rawport(BIO_ADDRINFO_address(res)));
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ret = 1;
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}
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BIO_ADDRINFO_free(res);
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} else {
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ERR_add_error_data(2, "host=", str);
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}
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return ret;
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}
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# endif
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int BIO_sock_error(int sock)
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{
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int j = 0, i;
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socklen_t size = 0;
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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, &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 OPENSSL_API_COMPAT < 0x10100000L
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struct hostent *BIO_gethostbyname(const char *name)
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{
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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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}
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# endif
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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 [believed 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);
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}
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void BIO_sock_cleanup(void)
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{
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# ifdef OPENSSL_SYS_WINDOWS
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if (wsa_init_done) {
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wsa_init_done = 0;
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WSACleanup();
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}
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# elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
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if (wsa_init_done) {
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wsa_init_done = 0;
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WSACleanup();
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}
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# endif
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}
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# if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000
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int BIO_socket_ioctl(int fd, long type, void *arg)
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{
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int i;
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# ifdef __DJGPP__
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i = ioctlsocket(fd, type, (char *)arg);
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# else
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# if defined(OPENSSL_SYS_VMS)
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/*-
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* 2011-02-18 SMS.
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* VMS ioctl() can't tolerate a 64-bit "void *arg", but we
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* observe that all the consumers pass in an "unsigned long *",
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* so we arrange a local copy with a short pointer, and use
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* that, instead.
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*/
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# if __INITIAL_POINTER_SIZE == 64
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# define ARG arg_32p
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# pragma pointer_size save
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# pragma pointer_size 32
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unsigned long arg_32;
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unsigned long *arg_32p;
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# pragma pointer_size restore
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arg_32p = &arg_32;
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arg_32 = *((unsigned long *)arg);
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# else /* __INITIAL_POINTER_SIZE == 64 */
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# define ARG arg
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# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
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# else /* defined(OPENSSL_SYS_VMS) */
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# define ARG arg
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# endif /* defined(OPENSSL_SYS_VMS) [else] */
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i = ioctlsocket(fd, type, ARG);
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# endif /* __DJGPP__ */
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if (i < 0)
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SYSerr(SYS_F_IOCTLSOCKET, get_last_socket_error());
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return (i);
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}
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# endif /* __VMS_VER */
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# if OPENSSL_API_COMPAT < 0x10100000L
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int BIO_get_accept_socket(char *host, int bind_mode)
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{
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int s = INVALID_SOCKET;
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char *h = NULL, *p = NULL;
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BIO_ADDRINFO *res = NULL;
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if (!BIO_parse_hostserv(host, &h, &p, BIO_PARSE_PRIO_SERV))
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return INVALID_SOCKET;
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if (BIO_sock_init() != 1)
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return INVALID_SOCKET;
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if (BIO_lookup(h, p, BIO_LOOKUP_SERVER, AF_UNSPEC, SOCK_STREAM, &res) != 0)
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goto err;
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if ((s = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
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BIO_ADDRINFO_protocol(res), 0)) == INVALID_SOCKET) {
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s = INVALID_SOCKET;
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goto err;
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}
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if (!BIO_listen(s, BIO_ADDRINFO_address(res),
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bind_mode ? BIO_SOCK_REUSEADDR : 0)) {
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BIO_closesocket(s);
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s = INVALID_SOCKET;
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}
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err:
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BIO_ADDRINFO_free(res);
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OPENSSL_free(h);
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OPENSSL_free(p);
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return s;
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}
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int BIO_accept(int sock, char **ip_port)
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{
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BIO_ADDR res;
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int ret = -1;
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ret = BIO_accept_ex(sock, &res, 0);
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if (ret == (int)INVALID_SOCKET) {
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if (BIO_sock_should_retry(ret)) {
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ret = -2;
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goto end;
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}
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SYSerr(SYS_F_ACCEPT, get_last_socket_error());
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BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
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goto end;
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}
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if (ip_port != NULL) {
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char *host = BIO_ADDR_hostname_string(&res, 1);
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char *port = BIO_ADDR_service_string(&res, 1);
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*ip_port = OPENSSL_zalloc(strlen(host) + strlen(port) + 2);
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strcpy(*ip_port, host);
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strcat(*ip_port, ":");
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strcat(*ip_port, port);
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OPENSSL_free(host);
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OPENSSL_free(port);
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}
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end:
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return ret;
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}
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# endif
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int BIO_set_tcp_ndelay(int s, int on)
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{
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int ret = 0;
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# if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
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int opt;
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# ifdef SOL_TCP
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opt = SOL_TCP;
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# else
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# ifdef IPPROTO_TCP
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opt = IPPROTO_TCP;
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# endif
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# endif
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ret = setsockopt(s, opt, TCP_NODELAY, (char *)&on, sizeof(on));
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# endif
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return (ret == 0);
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}
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int BIO_socket_nbio(int s, int mode)
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{
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int ret = -1;
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int l;
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l = mode;
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# ifdef FIONBIO
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l = mode;
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ret = BIO_socket_ioctl(s, FIONBIO, &l);
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# elif defined(F_GETFL) && defined(F_SETFL) && (defined(O_NONBLOCK) || defined(FNDELAY))
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/* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
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l = fcntl(s, F_GETFL, 0);
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if (l == -1) {
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SYSerr(SYS_F_FCNTL, get_last_rtl_error());
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ret = -1;
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} else {
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# if defined(O_NONBLOCK)
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l &= ~O_NONBLOCK;
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# else
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l &= ~FNDELAY; /* BSD4.x */
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# endif
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if (mode) {
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# if defined(O_NONBLOCK)
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l |= O_NONBLOCK;
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# else
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l |= FNDELAY; /* BSD4.x */
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# endif
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}
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ret = fcntl(s, F_SETFL, l);
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if (ret < 0) {
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SYSerr(SYS_F_FCNTL, get_last_rtl_error());
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}
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}
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# else
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/* make sure this call always pushes an error level; BIO_socket_ioctl() does so, so we do too. */
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BIOerr(BIO_F_BIO_SOCKET_NBIO, ERR_R_PASSED_INVALID_ARGUMENT);
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# endif
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return (ret == 0);
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}
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int BIO_sock_info(int sock,
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enum BIO_sock_info_type type, union BIO_sock_info_u *info)
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{
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switch (type) {
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case BIO_SOCK_INFO_ADDRESS:
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{
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socklen_t addr_len;
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int ret = 0;
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addr_len = sizeof(*info->addr);
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ret = getsockname(sock, BIO_ADDR_sockaddr_noconst(info->addr),
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&addr_len);
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if (ret == -1) {
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SYSerr(SYS_F_GETSOCKNAME, get_last_socket_error());
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BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_GETSOCKNAME_ERROR);
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return 0;
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}
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if ((size_t)addr_len > sizeof(*info->addr)) {
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BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_GETSOCKNAME_TRUNCATED_ADDRESS);
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return 0;
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}
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}
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break;
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default:
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BIOerr(BIO_F_BIO_SOCK_INFO, BIO_R_UNKNOWN_INFO_TYPE);
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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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