sl@0: /* apps/s_socket.c -  socket-related functions used by s_client and s_server */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <stdlib.h>
sl@0: #include <string.h>
sl@0: #include <errno.h>
sl@0: 
sl@0: 
sl@0: /* With IPv6, it looks like Digital has mixed up the proper order of
sl@0:    recursive header file inclusion, resulting in the compiler complaining
sl@0:    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
sl@0:    is needed to have fileno() declared correctly...  So let's define u_int */
sl@0: #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
sl@0: #define __U_INT
sl@0: typedef unsigned int u_int;
sl@0: #endif
sl@0: 
sl@0: #define USE_SOCKETS
sl@0: #define NON_MAIN
sl@0: #include "apps.h"
sl@0: #undef USE_SOCKETS
sl@0: #undef NON_MAIN
sl@0: #include "s_apps.h"
sl@0: #include <openssl/ssl.h>
sl@0: 
sl@0: #ifdef FLAT_INC
sl@0: #include "e_os.h"
sl@0: #else
sl@0: #ifndef SYMBIAN
sl@0: #include "../e_os.h"
sl@0: #else
sl@0: #include "e_os.h"
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: 
sl@0: #ifndef OPENSSL_NO_SOCK
sl@0: 
sl@0: #if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK)
sl@0: #include "netdb.h"
sl@0: #endif
sl@0: 
sl@0: static struct hostent *GetHostByName(char *name);
sl@0: #if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK))
sl@0: static void ssl_sock_cleanup(void);
sl@0: #endif
sl@0: static int ssl_sock_init(void);
sl@0: static int init_client_ip(int *sock,unsigned char ip[4], int port, int type);
sl@0: static int init_server(int *sock, int port, int type);
sl@0: static int init_server_long(int *sock, int port,char *ip, int type);
sl@0: static int do_accept(int acc_sock, int *sock, char **host);
sl@0: static int host_ip(char *str, unsigned char ip[4]);
sl@0: 
sl@0: #ifdef OPENSSL_SYS_WIN16
sl@0: #define SOCKET_PROTOCOL	0 /* more microsoft stupidity */
sl@0: #else
sl@0: #define SOCKET_PROTOCOL	IPPROTO_TCP
sl@0: #endif
sl@0: 
sl@0: #if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
sl@0: static int wsa_init_done=0;
sl@0: #endif
sl@0: 
sl@0: #ifdef OPENSSL_SYS_WINDOWS
sl@0: static struct WSAData wsa_state;
sl@0: static int wsa_init_done=0;
sl@0: 
sl@0: #ifdef OPENSSL_SYS_WIN16
sl@0: static HWND topWnd=0;
sl@0: static FARPROC lpTopWndProc=NULL;
sl@0: static FARPROC lpTopHookProc=NULL;
sl@0: extern HINSTANCE _hInstance;  /* nice global CRT provides */
sl@0: 
sl@0: 
sl@0: static LONG FAR PASCAL topHookProc(HWND hwnd, UINT message, WPARAM wParam,
sl@0: 	     LPARAM lParam)
sl@0: 	{
sl@0: 	if (hwnd == topWnd)
sl@0: 		{
sl@0: 		switch(message)
sl@0: 			{
sl@0: 		case WM_DESTROY:
sl@0: 		case WM_CLOSE:
sl@0: 			SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopWndProc);
sl@0: 			ssl_sock_cleanup();
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 	return CallWindowProc(lpTopWndProc,hwnd,message,wParam,lParam);
sl@0: 	}
sl@0: 
sl@0: static BOOL CALLBACK enumproc(HWND hwnd,LPARAM lParam)
sl@0: 	{
sl@0: 	topWnd=hwnd;
sl@0: 	return(FALSE);
sl@0: 	}
sl@0: 
sl@0: #endif /* OPENSSL_SYS_WIN32 */
sl@0: #endif /* OPENSSL_SYS_WINDOWS */
sl@0: 
sl@0: #ifdef OPENSSL_SYS_WINDOWS
sl@0: static void ssl_sock_cleanup(void)
sl@0: 	{
sl@0: 	if (wsa_init_done)
sl@0: 		{
sl@0: 		wsa_init_done=0;
sl@0: #ifndef OPENSSL_SYS_WINCE
sl@0: 		WSACancelBlockingCall();
sl@0: #endif
sl@0: 		WSACleanup();
sl@0: 		}
sl@0: 	}
sl@0: #elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
sl@0: static void sock_cleanup(void)
sl@0:     {
sl@0:     if (wsa_init_done)
sl@0:         {
sl@0:         wsa_init_done=0;
sl@0: 		WSACleanup();
sl@0: 		}
sl@0: 	}
sl@0: #endif
sl@0: 
sl@0: static int ssl_sock_init(void)
sl@0: 	{
sl@0: #ifdef WATT32
sl@0: 	extern int _watt_do_exit;
sl@0: 	_watt_do_exit = 0;
sl@0: 	if (sock_init())
sl@0: 		return (0);
sl@0: #elif defined(OPENSSL_SYS_WINDOWS)
sl@0: 	if (!wsa_init_done)
sl@0: 		{
sl@0: 		int err;
sl@0: 	  
sl@0: #ifdef SIGINT
sl@0: 	//	signal(SIGINT,(void (*)(int))ssl_sock_cleanup);
sl@0: #endif
sl@0: 		wsa_init_done=1;
sl@0: 		memset(&wsa_state,0,sizeof(wsa_state));
sl@0: 		if (WSAStartup(0x0101,&wsa_state)!=0)
sl@0: 			{
sl@0: 			err=WSAGetLastError();
sl@0: 			BIO_printf(bio_err,"unable to start WINSOCK, error code=%d\n",err);
sl@0: 			return(0);
sl@0: 			}
sl@0: 
sl@0: #ifdef OPENSSL_SYS_WIN16
sl@0: 		EnumTaskWindows(GetCurrentTask(),enumproc,0L);
sl@0: 		lpTopWndProc=(FARPROC)GetWindowLong(topWnd,GWL_WNDPROC);
sl@0: 		lpTopHookProc=MakeProcInstance((FARPROC)topHookProc,_hInstance);
sl@0: 
sl@0: 		SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopHookProc);
sl@0: #endif /* OPENSSL_SYS_WIN16 */
sl@0: 		}
sl@0: #elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
sl@0:    WORD wVerReq;
sl@0:    WSADATA wsaData;
sl@0:    int err;
sl@0: 
sl@0:    if (!wsa_init_done)
sl@0:       {
sl@0:    
sl@0: # ifdef SIGINT
sl@0:     //  signal(SIGINT,(void (*)(int))sock_cleanup);
sl@0: # endif
sl@0: 
sl@0:       wsa_init_done=1;
sl@0:       wVerReq = MAKEWORD( 2, 0 );
sl@0:       err = WSAStartup(wVerReq,&wsaData);
sl@0:       if (err != 0)
sl@0:          {
sl@0:          BIO_printf(bio_err,"unable to start WINSOCK2, error code=%d\n",err);
sl@0:          return(0);
sl@0:          }
sl@0:       }
sl@0: #endif /* OPENSSL_SYS_WINDOWS */
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: int init_client(int *sock, char *host, int port, int type)
sl@0: 	{
sl@0: 	unsigned char ip[4];
sl@0: 	short p=0;
sl@0: 
sl@0: 	if (!host_ip(host,&(ip[0])))
sl@0: 		{
sl@0: 		return(0);
sl@0: 		}
sl@0: 	if (p != 0) port=p;
sl@0: 	return(init_client_ip(sock,ip,port,type));
sl@0: 	}
sl@0: 
sl@0: static int init_client_ip(int *sock, unsigned char ip[4], int port, int type)
sl@0: 	{
sl@0: 	unsigned long addr;
sl@0: 	struct sockaddr_in them;
sl@0: 	int s,i;
sl@0: 
sl@0: 	if (!ssl_sock_init()) return(0);
sl@0: 
sl@0: 	memset((char *)&them,0,sizeof(them));
sl@0: 	them.sin_family=AF_INET;
sl@0: 	them.sin_port=htons((unsigned short)port);
sl@0: 	addr=(unsigned long)
sl@0: 		((unsigned long)ip[0]<<24L)|
sl@0: 		((unsigned long)ip[1]<<16L)|
sl@0: 		((unsigned long)ip[2]<< 8L)|
sl@0: 		((unsigned long)ip[3]);
sl@0: 	them.sin_addr.s_addr=htonl(addr);
sl@0: 
sl@0: 	if (type == SOCK_STREAM)
sl@0: 		s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
sl@0: 	else /* ( type == SOCK_DGRAM) */
sl@0: 		s=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);
sl@0: 			
sl@0: 	if (s == INVALID_SOCKET) { perror("socket"); return(0); }
sl@0: 
sl@0: #ifndef OPENSSL_SYS_MPE
sl@0: 	if (type == SOCK_STREAM)
sl@0: 		{
sl@0: 		i=0;
sl@0: 		i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
sl@0: 		if (i < 0) { perror("keepalive"); return(0); }
sl@0: 		}
sl@0: #endif
sl@0: 
sl@0: 	if (connect(s,(struct sockaddr *)&them,sizeof(them)) == -1)
sl@0: 		{ close(s); perror("connect"); return(0); }
sl@0: 	*sock=s;
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: int do_server(int port, int type, int *ret, int (*cb)(char *hostname, int s, unsigned char *context), unsigned char *context)
sl@0: 	{
sl@0: 	int sock;
sl@0: 	char *name = NULL;
sl@0: 	int accept_socket;
sl@0: 	int i;
sl@0: 
sl@0: 	if (!init_server(&accept_socket,port,type)) return(0);
sl@0: 
sl@0: 	if (ret != NULL)
sl@0: 		{
sl@0: 		*ret=accept_socket;
sl@0: 		/* return(1);*/
sl@0: 		}
sl@0:   	for (;;)
sl@0:   		{
sl@0: 		if (type==SOCK_STREAM)
sl@0: 			{
sl@0: 			if (do_accept(accept_socket,&sock,&name) == 0)
sl@0: 				{
sl@0: 				SHUTDOWN(accept_socket);
sl@0: 				return(0);
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: 			sock = accept_socket;
sl@0: 		i=(*cb)(name,sock, context);
sl@0: 		if (name != NULL) OPENSSL_free(name);
sl@0: 		if (type==SOCK_STREAM)
sl@0: 			SHUTDOWN2(sock);
sl@0: 		if (i < 0)
sl@0: 			{
sl@0: 			SHUTDOWN2(accept_socket);
sl@0: 			return(i);
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: static int init_server_long(int *sock, int port, char *ip, int type)
sl@0: 	{
sl@0: 	int ret=0;
sl@0: 	struct sockaddr_in server;
sl@0: 	int s= -1,i;
sl@0: 
sl@0: 	if (!ssl_sock_init()) return(0);
sl@0: 
sl@0: 	memset((char *)&server,0,sizeof(server));
sl@0: 	server.sin_family=AF_INET;
sl@0: 	server.sin_port=htons((unsigned short)port);
sl@0: 	if (ip == NULL)
sl@0: 		server.sin_addr.s_addr=INADDR_ANY;
sl@0: 	else
sl@0: /* Added for T3E, address-of fails on bit field (beckman@acl.lanl.gov) */
sl@0: #ifndef BIT_FIELD_LIMITS
sl@0: 		memcpy(&server.sin_addr.s_addr,ip,4);
sl@0: #else
sl@0: 		memcpy(&server.sin_addr,ip,4);
sl@0: #endif
sl@0: 	
sl@0: 		if (type == SOCK_STREAM)
sl@0: 			s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
sl@0: 		else /* type == SOCK_DGRAM */
sl@0: 			s=socket(AF_INET, SOCK_DGRAM,IPPROTO_UDP);
sl@0: 
sl@0: 	if (s == INVALID_SOCKET) goto err;
sl@0: #if defined SOL_SOCKET && defined SO_REUSEADDR
sl@0: 		{
sl@0: 		int j = 1;
sl@0: 		setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
sl@0: 			   (void *) &j, sizeof j);
sl@0: 		}
sl@0: #endif
sl@0: 	if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
sl@0: 		{
sl@0: #ifndef OPENSSL_SYS_WINDOWS
sl@0: 		perror("bind");
sl@0: #endif
sl@0: 		goto err;
sl@0: 		}
sl@0: 	/* Make it 128 for linux */
sl@0: 	if (type==SOCK_STREAM && listen(s,128) == -1) goto err;
sl@0: 	i=0;
sl@0: 	*sock=s;
sl@0: 	ret=1;
sl@0: err:
sl@0: 	if ((ret == 0) && (s != -1))
sl@0: 		{
sl@0: 		SHUTDOWN(s);
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: static int init_server(int *sock, int port, int type)
sl@0: 	{
sl@0: 	return(init_server_long(sock, port, NULL, type));
sl@0: 	}
sl@0: 
sl@0: static int do_accept(int acc_sock, int *sock, char **host)
sl@0: 	{
sl@0: 	int ret,i;
sl@0: 	struct hostent *h1,*h2;
sl@0: 	static struct sockaddr_in from;
sl@0: 	int len;
sl@0: /*	struct linger ling; */
sl@0: 
sl@0: 	if (!ssl_sock_init()) return(0);
sl@0: 
sl@0: #ifndef OPENSSL_SYS_WINDOWS
sl@0: redoit:
sl@0: #endif
sl@0: 
sl@0: 	memset((char *)&from,0,sizeof(from));
sl@0: 	len=sizeof(from);
sl@0: 	/* Note: under VMS with SOCKETSHR the fourth parameter is currently
sl@0: 	 * of type (int *) whereas under other systems it is (void *) if
sl@0: 	 * you don't have a cast it will choke the compiler: if you do
sl@0: 	 * have a cast then you can either go for (int *) or (void *).
sl@0: 	 */
sl@0: 	ret=accept(acc_sock,(struct sockaddr *)&from,(void *)&len);
sl@0: 	if (ret == INVALID_SOCKET)
sl@0: 		{
sl@0: #if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK))
sl@0: 		i=WSAGetLastError();
sl@0: 		BIO_printf(bio_err,"accept error %d\n",i);
sl@0: #else
sl@0: 		if (errno == EINTR)
sl@0: 			{
sl@0: 			/*check_timeout(); */
sl@0: 			goto redoit;
sl@0: 			}
sl@0: 		fprintf(stderr,"errno=%d ",errno);
sl@0: //		perror("accept");
sl@0: 
sl@0: #endif
sl@0: 		return(0);
sl@0: 		}
sl@0: 
sl@0: /*
sl@0: 	ling.l_onoff=1;
sl@0: 	ling.l_linger=0;
sl@0: 	i=setsockopt(ret,SOL_SOCKET,SO_LINGER,(char *)&ling,sizeof(ling));
sl@0: 	if (i < 0) { perror("linger"); return(0); }
sl@0: 	i=0;
sl@0: 	i=setsockopt(ret,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
sl@0: 	if (i < 0) { perror("keepalive"); return(0); }
sl@0: */
sl@0: 
sl@0: 	if (host == NULL) goto end;
sl@0: #ifndef BIT_FIELD_LIMITS
sl@0: 	/* I should use WSAAsyncGetHostByName() under windows */
sl@0: 	h1=gethostbyaddr((char *)&from.sin_addr.s_addr,
sl@0: 		sizeof(from.sin_addr.s_addr),AF_INET);
sl@0: #else
sl@0: 	h1=gethostbyaddr((char *)&from.sin_addr,
sl@0: 		sizeof(struct in_addr),AF_INET);
sl@0: #endif
sl@0: 	if (h1 == NULL)
sl@0: 		{
sl@0: 		BIO_printf(bio_err,"bad gethostbyaddr\n");
sl@0: 		*host=NULL;
sl@0: 		/* return(0); */
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		if ((*host=(char *)OPENSSL_malloc(strlen(h1->h_name)+1)) == NULL)
sl@0: 			{
sl@0: 			perror("OPENSSL_malloc");
sl@0: 			return(0);
sl@0: 			}
sl@0: 		BUF_strlcpy(*host,h1->h_name,strlen(h1->h_name)+1);
sl@0: 
sl@0: 		h2=GetHostByName(*host);
sl@0: 		if (h2 == NULL)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"gethostbyname failure\n");
sl@0: 			return(0);
sl@0: 			}
sl@0: 		i=0;
sl@0: 		if (h2->h_addrtype != AF_INET)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
sl@0: 			return(0);
sl@0: 			}
sl@0: 		}
sl@0: end:
sl@0: 	*sock=ret;
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: int extract_host_port(char *str, char **host_ptr, unsigned char *ip,
sl@0: 	     short *port_ptr)
sl@0: 	{
sl@0: 	char *h,*p;
sl@0: 
sl@0: 	h=str;
sl@0: 	p=strchr(str,':');
sl@0: 	if (p == NULL)
sl@0: 		{
sl@0: 		BIO_printf(bio_err,"no port defined\n");
sl@0: 		return(0);
sl@0: 		}
sl@0: 	*(p++)='\0';
sl@0: 
sl@0: 	if ((ip != NULL) && !host_ip(str,ip))
sl@0: 		goto err;
sl@0: 	if (host_ptr != NULL) *host_ptr=h;
sl@0: 
sl@0: 	if (!extract_port(p,port_ptr))
sl@0: 		goto err;
sl@0: 	return(1);
sl@0: err:
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: static int host_ip(char *str, unsigned char ip[4])
sl@0: 	{
sl@0: 	unsigned int in[4]; 
sl@0: 	int i;
sl@0: 
sl@0: 	if (sscanf(str,"%u.%u.%u.%u",&(in[0]),&(in[1]),&(in[2]),&(in[3])) == 4)
sl@0: 		{
sl@0: 		for (i=0; i<4; i++)
sl@0: 			if (in[i] > 255)
sl@0: 				{
sl@0: 				BIO_printf(bio_err,"invalid IP address\n");
sl@0: 				goto err;
sl@0: 				}
sl@0: 		ip[0]=in[0];
sl@0: 		ip[1]=in[1];
sl@0: 		ip[2]=in[2];
sl@0: 		ip[3]=in[3];
sl@0: 		}
sl@0: 	else
sl@0: 		{ /* do a gethostbyname */
sl@0: 		struct hostent *he;
sl@0: 
sl@0: 		if (!ssl_sock_init()) return(0);
sl@0: 
sl@0: 		he=GetHostByName(str);
sl@0: 		if (he == NULL)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"gethostbyname failure\n");
sl@0: 			goto err;
sl@0: 			}
sl@0: 		/* cast to short because of win16 winsock definition */
sl@0: 		if ((short)he->h_addrtype != AF_INET)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
sl@0: 			return(0);
sl@0: 			}
sl@0: 		ip[0]=he->h_addr_list[0][0];
sl@0: 		ip[1]=he->h_addr_list[0][1];
sl@0: 		ip[2]=he->h_addr_list[0][2];
sl@0: 		ip[3]=he->h_addr_list[0][3];
sl@0: 		}
sl@0: 	return(1);
sl@0: err:
sl@0: 	return(0);
sl@0: 	}
sl@0: 
sl@0: int extract_port(char *str, short *port_ptr)
sl@0: 	{
sl@0: 	int i;
sl@0: 	struct servent *s;
sl@0: 
sl@0: 	i=atoi(str);
sl@0: 	if (i != 0)
sl@0: 		*port_ptr=(unsigned short)i;
sl@0: 	else
sl@0: 		{
sl@0: 		s=getservbyname(str,"tcp");
sl@0: 		if (s == NULL)
sl@0: 			{
sl@0: 			BIO_printf(bio_err,"getservbyname failure for %s\n",str);
sl@0: 			return(0);
sl@0: 			}
sl@0: 		*port_ptr=ntohs((unsigned short)s->s_port);
sl@0: 		}
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: #define GHBN_NUM	4
sl@0: static struct ghbn_cache_st
sl@0: 	{
sl@0: 	char name[128];
sl@0: 	struct hostent ent;
sl@0: 	unsigned long order;
sl@0: 	} ghbn_cache[GHBN_NUM];
sl@0: 
sl@0: static unsigned long ghbn_hits=0L;
sl@0: static unsigned long ghbn_miss=0L;
sl@0: 
sl@0: static struct hostent *GetHostByName(char *name)
sl@0: 	{
sl@0: 	struct hostent *ret;
sl@0: 	int i,lowi=0;
sl@0: 	unsigned long low= (unsigned long)-1;
sl@0: 
sl@0: 	for (i=0; i<GHBN_NUM; i++)
sl@0: 		{
sl@0: 		if (low > ghbn_cache[i].order)
sl@0: 			{
sl@0: 			low=ghbn_cache[i].order;
sl@0: 			lowi=i;
sl@0: 			}
sl@0: 		if (ghbn_cache[i].order > 0)
sl@0: 			{
sl@0: 			if (strncmp(name,ghbn_cache[i].name,128) == 0)
sl@0: 				break;
sl@0: 			}
sl@0: 		}
sl@0: 	if (i == GHBN_NUM) /* no hit*/
sl@0: 		{
sl@0: 		ghbn_miss++;
sl@0: 		ret=gethostbyname(name);
sl@0: 		if (ret == NULL) return(NULL);
sl@0: 		/* else add to cache */
sl@0: 		if(strlen(name) < sizeof ghbn_cache[0].name)
sl@0: 			{
sl@0: 			strcpy(ghbn_cache[lowi].name,name);
sl@0: 			memcpy((char *)&(ghbn_cache[lowi].ent),ret,sizeof(struct hostent));
sl@0: 			ghbn_cache[lowi].order=ghbn_miss+ghbn_hits;
sl@0: 			}
sl@0: 		return(ret);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		ghbn_hits++;
sl@0: 		ret= &(ghbn_cache[i].ent);
sl@0: 		ghbn_cache[i].order=ghbn_miss+ghbn_hits;
sl@0: 		return(ret);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: #endif