28a0841bf5
Because different platforms have different levels of support for IPv6, different kinds of sockaddr variants, and some have getaddrinfo et al while others don't, we could end up with a mess if ifdefs, duplicate code and other maintainance nightmares. Instead, we're introducing wrappers around the common form for socket communication: BIO_ADDR, closely related to struct sockaddr and some of its variants. BIO_ADDRINFO, closely related to struct addrinfo. With that comes support routines, both convenient creators and accessors, plus a few utility functions: BIO_parse_hostserv, takes a string of the form host:service and splits it into host and service. It checks for * in both parts, and converts any [ipv6-address] syntax to ust the IPv6 address. BIO_lookup, looks up information on a host. All routines handle IPv4 (AF_INET) and IPv6 (AF_INET6) addresses, and there is support for local sockets (AF_UNIX) as well. Reviewed-by: Kurt Roeckx <kurt@openssl.org>
731 lines
22 KiB
C
731 lines
22 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
|
|
* All rights reserved.
|
|
*
|
|
* This package is an SSL implementation written
|
|
* by Eric Young (eay@cryptsoft.com).
|
|
* The implementation was written so as to conform with Netscapes SSL.
|
|
*
|
|
* This library is free for commercial and non-commercial use as long as
|
|
* the following conditions are aheared to. The following conditions
|
|
* apply to all code found in this distribution, be it the RC4, RSA,
|
|
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
|
|
* included with this distribution is covered by the same copyright terms
|
|
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed.
|
|
* If this package is used in a product, Eric Young should be given attribution
|
|
* as the author of the parts of the library used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* "This product includes cryptographic software written by
|
|
* Eric Young (eay@cryptsoft.com)"
|
|
* The word 'cryptographic' can be left out if the rouines from the library
|
|
* being used are not cryptographic related :-).
|
|
* 4. If you include any Windows specific code (or a derivative thereof) from
|
|
* the apps directory (application code) you must include an acknowledgement:
|
|
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include "bio_lcl.h"
|
|
#if defined(NETWARE_CLIB)
|
|
# include <sys/ioctl.h>
|
|
NETDB_DEFINE_CONTEXT
|
|
#endif
|
|
#ifndef OPENSSL_NO_SOCK
|
|
# include <openssl/dso.h>
|
|
# define SOCKET_PROTOCOL IPPROTO_TCP
|
|
# ifdef SO_MAXCONN
|
|
# define MAX_LISTEN SO_MAXCONN
|
|
# elif defined(SOMAXCONN)
|
|
# define MAX_LISTEN SOMAXCONN
|
|
# else
|
|
# define MAX_LISTEN 32
|
|
# endif
|
|
# if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK))
|
|
static int wsa_init_done = 0;
|
|
# endif
|
|
|
|
/*
|
|
* WSAAPI specifier is required to make indirect calls to run-time
|
|
* linked WinSock 2 functions used in this module, to be specific
|
|
* [get|free]addrinfo and getnameinfo. This is because WinSock uses
|
|
* uses non-C calling convention, __stdcall vs. __cdecl, on x86
|
|
* Windows. On non-WinSock platforms WSAAPI needs to be void.
|
|
*/
|
|
# ifndef WSAAPI
|
|
# define WSAAPI
|
|
# endif
|
|
|
|
static int get_ip(const char *str, unsigned char *ip);
|
|
int BIO_get_host_ip(const char *str, unsigned char *ip)
|
|
{
|
|
int i;
|
|
int err = 1;
|
|
int locked = 0;
|
|
struct hostent *he;
|
|
|
|
i = get_ip(str, ip);
|
|
if (i < 0) {
|
|
BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_INVALID_IP_ADDRESS);
|
|
goto err;
|
|
}
|
|
|
|
/*
|
|
* At this point, we have something that is most probably correct in some
|
|
* way, so let's init the socket.
|
|
*/
|
|
if (BIO_sock_init() != 1)
|
|
return 0; /* don't generate another error code here */
|
|
|
|
/*
|
|
* If the string actually contained an IP address, we need not do
|
|
* anything more
|
|
*/
|
|
if (i > 0)
|
|
return (1);
|
|
|
|
/* do a gethostbyname */
|
|
CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
|
|
locked = 1;
|
|
he = BIO_gethostbyname(str);
|
|
if (he == NULL) {
|
|
BIOerr(BIO_F_BIO_GET_HOST_IP, BIO_R_BAD_HOSTNAME_LOOKUP);
|
|
goto err;
|
|
}
|
|
|
|
if (he->h_addrtype != AF_INET) {
|
|
BIOerr(BIO_F_BIO_GET_HOST_IP,
|
|
BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
|
|
goto err;
|
|
}
|
|
for (i = 0; i < 4; i++)
|
|
ip[i] = he->h_addr_list[0][i];
|
|
err = 0;
|
|
|
|
err:
|
|
if (locked)
|
|
CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
|
|
if (err) {
|
|
ERR_add_error_data(2, "host=", str);
|
|
return 0;
|
|
} else
|
|
return 1;
|
|
}
|
|
|
|
int BIO_get_port(const char *str, unsigned short *port_ptr)
|
|
{
|
|
int i;
|
|
struct servent *s;
|
|
|
|
if (str == NULL) {
|
|
BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED);
|
|
return (0);
|
|
}
|
|
i = atoi(str);
|
|
if (i != 0)
|
|
*port_ptr = (unsigned short)i;
|
|
else {
|
|
CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME);
|
|
/*
|
|
* Note: under VMS with SOCKETSHR, it seems like the first parameter
|
|
* is 'char *', instead of 'const char *'
|
|
*/
|
|
# ifndef CONST_STRICT
|
|
s = getservbyname((char *)str, "tcp");
|
|
# else
|
|
s = getservbyname(str, "tcp");
|
|
# endif
|
|
if (s != NULL)
|
|
*port_ptr = ntohs((unsigned short)s->s_port);
|
|
CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME);
|
|
if (s == NULL) {
|
|
if (strcmp(str, "http") == 0)
|
|
*port_ptr = 80;
|
|
else if (strcmp(str, "telnet") == 0)
|
|
*port_ptr = 23;
|
|
else if (strcmp(str, "socks") == 0)
|
|
*port_ptr = 1080;
|
|
else if (strcmp(str, "https") == 0)
|
|
*port_ptr = 443;
|
|
else if (strcmp(str, "ssl") == 0)
|
|
*port_ptr = 443;
|
|
else if (strcmp(str, "ftp") == 0)
|
|
*port_ptr = 21;
|
|
else if (strcmp(str, "gopher") == 0)
|
|
*port_ptr = 70;
|
|
else {
|
|
SYSerr(SYS_F_GETSERVBYNAME, get_last_socket_error());
|
|
ERR_add_error_data(3, "service='", str, "'");
|
|
return (0);
|
|
}
|
|
}
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
int BIO_sock_error(int sock)
|
|
{
|
|
int j, i;
|
|
union {
|
|
size_t s;
|
|
int i;
|
|
} size;
|
|
|
|
/* heuristic way to adapt for platforms that expect 64-bit optlen */
|
|
size.s = 0, size.i = sizeof(j);
|
|
/*
|
|
* Note: under Windows the third parameter is of type (char *) whereas
|
|
* under other systems it is (void *) if you don't have a cast it will
|
|
* choke the compiler: if you do have a cast then you can either go for
|
|
* (char *) or (void *).
|
|
*/
|
|
i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, (void *)&size);
|
|
if (i < 0)
|
|
return (1);
|
|
else
|
|
return (j);
|
|
}
|
|
|
|
struct hostent *BIO_gethostbyname(const char *name)
|
|
{
|
|
/*
|
|
* Caching gethostbyname() results forever is wrong, so we have to let
|
|
* the true gethostbyname() worry about this
|
|
*/
|
|
# if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__))
|
|
return gethostbyname((char *)name);
|
|
# else
|
|
return gethostbyname(name);
|
|
# endif
|
|
}
|
|
|
|
int BIO_sock_init(void)
|
|
{
|
|
# ifdef OPENSSL_SYS_WINDOWS
|
|
static struct WSAData wsa_state;
|
|
|
|
if (!wsa_init_done) {
|
|
int err;
|
|
|
|
wsa_init_done = 1;
|
|
memset(&wsa_state, 0, sizeof(wsa_state));
|
|
/*
|
|
* Not making wsa_state available to the rest of the code is formally
|
|
* wrong. But the structures we use are [beleived to be] invariable
|
|
* among Winsock DLLs, while API availability is [expected to be]
|
|
* probed at run-time with DSO_global_lookup.
|
|
*/
|
|
if (WSAStartup(0x0202, &wsa_state) != 0) {
|
|
err = WSAGetLastError();
|
|
SYSerr(SYS_F_WSASTARTUP, err);
|
|
BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
|
|
return (-1);
|
|
}
|
|
}
|
|
# endif /* OPENSSL_SYS_WINDOWS */
|
|
# ifdef WATT32
|
|
extern int _watt_do_exit;
|
|
_watt_do_exit = 0; /* don't make sock_init() call exit() */
|
|
if (sock_init())
|
|
return (-1);
|
|
# endif
|
|
|
|
# if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
|
|
WORD wVerReq;
|
|
WSADATA wsaData;
|
|
int err;
|
|
|
|
if (!wsa_init_done) {
|
|
wsa_init_done = 1;
|
|
wVerReq = MAKEWORD(2, 0);
|
|
err = WSAStartup(wVerReq, &wsaData);
|
|
if (err != 0) {
|
|
SYSerr(SYS_F_WSASTARTUP, err);
|
|
BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
|
|
return (-1);
|
|
}
|
|
}
|
|
# endif
|
|
|
|
return (1);
|
|
}
|
|
|
|
void BIO_sock_cleanup(void)
|
|
{
|
|
# ifdef OPENSSL_SYS_WINDOWS
|
|
if (wsa_init_done) {
|
|
wsa_init_done = 0;
|
|
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 = (int)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 ((int)INVALID_SOCKET);
|
|
|
|
if ((str = OPENSSL_strdup(host)) == NULL)
|
|
return ((int)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(&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 == (int)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 != (int)INVALID_SOCKET) {
|
|
int ii;
|
|
ii = connect(cs, &client.sa, addrlen);
|
|
closesocket(cs);
|
|
if (ii == (int)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:
|
|
OPENSSL_free(str);
|
|
if ((ret == 0) && (s != (int)INVALID_SOCKET)) {
|
|
closesocket(s);
|
|
s = (int)INVALID_SOCKET;
|
|
}
|
|
return (s);
|
|
}
|
|
|
|
int BIO_accept(int sock, char **addr)
|
|
{
|
|
int ret = (int)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 == (int)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);
|
|
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
|