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/* apps/s_socket.c - socket-related functions used by s_client and s_server */
/* 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 <string.h>
#include <errno.h>
#include <signal.h>
#define USE_SOCKETS
#define NON_MAIN
#include "apps.h"
#undef USE_SOCKETS
#undef NON_MAIN
#include "s_apps.h"
#include <openssl/ssl.h>
/* With IPv6, it looks like Digital has mixed up the proper order of
recursive header file inclusion, resulting in the compiler complaining
that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
is needed to have fileno() declared correctly... So let's define u_int */
#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
#define __U_INT
typedef unsigned int u_int;
#endif
static struct hostent *GetHostByName(char *name);
#ifdef OPENSSL_SYS_WINDOWS
static void sock_cleanup(void);
#endif
static int sock_init(void);
static int init_client_ip(int *sock,unsigned char ip[4], int port);
static int init_server(int *sock, int port);
static int init_server_long(int *sock, int port,char *ip);
static int do_accept(int acc_sock, int *sock, char **host);
static int host_ip(char *str, unsigned char ip[4]);
#ifdef OPENSSL_SYS_WIN16
#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
#else
#define SOCKET_PROTOCOL IPPROTO_TCP
#endif
#ifdef OPENSSL_SYS_WINDOWS
static struct WSAData wsa_state;
static int wsa_init_done=0;
#ifdef OPENSSL_SYS_WIN16
static HWND topWnd=0;
static FARPROC lpTopWndProc=NULL;
static FARPROC lpTopHookProc=NULL;
extern HINSTANCE _hInstance; /* nice global CRT provides */
static LONG FAR PASCAL topHookProc(HWND hwnd, UINT message, WPARAM wParam,
LPARAM lParam)
{
if (hwnd == topWnd)
{
switch(message)
{
case WM_DESTROY:
case WM_CLOSE:
SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopWndProc);
sock_cleanup();
break;
}
}
return CallWindowProc(lpTopWndProc,hwnd,message,wParam,lParam);
}
static BOOL CALLBACK enumproc(HWND hwnd,LPARAM lParam)
{
topWnd=hwnd;
return(FALSE);
}
#endif /* OPENSSL_SYS_WIN32 */
#endif /* OPENSSL_SYS_WINDOWS */
#ifdef OPENSSL_SYS_WINDOWS
static void sock_cleanup(void)
{
if (wsa_init_done)
{
wsa_init_done=0;
WSACancelBlockingCall();
WSACleanup();
}
}
#endif
static int sock_init(void)
{
#ifdef OPENSSL_SYS_WINDOWS
if (!wsa_init_done)
{
int err;
#ifdef SIGINT
signal(SIGINT,(void (*)(int))sock_cleanup);
#endif
wsa_init_done=1;
memset(&wsa_state,0,sizeof(wsa_state));
if (WSAStartup(0x0101,&wsa_state)!=0)
{
err=WSAGetLastError();
BIO_printf(bio_err,"unable to start WINSOCK, error code=%d\n",err);
return(0);
}
#ifdef OPENSSL_SYS_WIN16
EnumTaskWindows(GetCurrentTask(),enumproc,0L);
lpTopWndProc=(FARPROC)GetWindowLong(topWnd,GWL_WNDPROC);
lpTopHookProc=MakeProcInstance((FARPROC)topHookProc,_hInstance);
SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopHookProc);
#endif /* OPENSSL_SYS_WIN16 */
}
#endif /* OPENSSL_SYS_WINDOWS */
return(1);
}
int init_client(int *sock, char *host, int port)
{
unsigned char ip[4];
short p=0;
if (!host_ip(host,&(ip[0])))
{
return(0);
}
if (p != 0) port=p;
return(init_client_ip(sock,ip,port));
}
static int init_client_ip(int *sock, unsigned char ip[4], int port)
{
unsigned long addr;
struct sockaddr_in them;
int s,i;
if (!sock_init()) return(0);
memset((char *)&them,0,sizeof(them));
them.sin_family=AF_INET;
them.sin_port=htons((unsigned short)port);
addr=(unsigned long)
((unsigned long)ip[0]<<24L)|
((unsigned long)ip[1]<<16L)|
((unsigned long)ip[2]<< 8L)|
((unsigned long)ip[3]);
them.sin_addr.s_addr=htonl(addr);
s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
if (s == INVALID_SOCKET) { perror("socket"); return(0); }
#ifndef OPENSSL_SYS_MPE
i=0;
i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
if (i < 0) { perror("keepalive"); return(0); }
#endif
if (connect(s,(struct sockaddr *)&them,sizeof(them)) == -1)
{ close(s); perror("connect"); return(0); }
*sock=s;
return(1);
}
int do_server(int port, int *ret, int (*cb)(), char *context)
{
int sock;
char *name;
int accept_socket;
int i;
if (!init_server(&accept_socket,port)) return(0);
if (ret != NULL)
{
*ret=accept_socket;
/* return(1);*/
}
for (;;)
{
if (do_accept(accept_socket,&sock,&name) == 0)
{
SHUTDOWN(accept_socket);
return(0);
}
i=(*cb)(name,sock, context);
if (name != NULL) OPENSSL_free(name);
SHUTDOWN2(sock);
if (i < 0)
{
SHUTDOWN2(accept_socket);
return(i);
}
}
}
static int init_server_long(int *sock, int port, char *ip)
{
int ret=0;
struct sockaddr_in server;
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