[thirdparty/openssl.git] / apps / s_socket.c

/* apps/s_socket.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.]
 */

/* 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(__DECC) && !defined(__U_INT)
#define __U_INT
typedef unsigned int u_int;
#endif

#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>

#if (__VMS_VER < 70000000) /* FIONBIO used as a switch to enable ioctl,
			      and that isn't in VMS < 7.0 */
#undef FIONBIO
#endif
#ifdef VMS /* for vfork() */
#include <processes.h>
#endif

static struct hostent *GetHostByName(char *name);
int sock_init(void );
#ifdef WIN16
#define SOCKET_PROTOCOL	0 /* more microsoft stupidity */
#else
#define SOCKET_PROTOCOL	IPPROTO_TCP
#endif

#ifdef WINDOWS
static struct WSAData wsa_state;
static int wsa_init_done=0;

#ifdef 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 /* WIN32 */
#endif /* WINDOWS */

void sock_cleanup(void)
	{
#ifdef WINDOWS
	if (wsa_init_done)
		{
		wsa_init_done=0;
		WSACancelBlockingCall();
		WSACleanup();
		}
#endif
	}

int sock_init(void)
	{
#ifdef 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 WIN16
		EnumTaskWindows(GetCurrentTask(),enumproc,0L);
		lpTopWndProc=(FARPROC)GetWindowLong(topWnd,GWL_WNDPROC);
		lpTopHookProc=MakeProcInstance((FARPROC)topHookProc,_hInstance);

		SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopHookProc);
#endif /* WIN16 */
		}
#endif /* 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));
	}

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); }

	i=0;
	i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
	if (i < 0) { perror("keepalive"); return(0); }

	if (connect(s,(struct sockaddr *)&them,sizeof(them)) == -1)
		{ close(s); perror("connect"); return(0); }
	*sock=s;
	return(1);
	}

int nbio_sock_error(int sock)
	{
	int j,i;
	int size;

	size=sizeof(int);
	/* Note: under VMS with SOCKETSHR the third parameter is currently
	 * of type (int *) 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 (int *) or (void *).
	 */
	i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(char *)&j,(void *)&size);
	if (i < 0)
		return(1);
	else
		return(j);
	}

int nbio_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);

	if (*sock <= 0)
		{
		unsigned long l=1;

		s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
		if (s == INVALID_SOCKET) { perror("socket"); return(0); }

		i=0;
		i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
		if (i < 0) { perror("keepalive"); return(0); }
		*sock=s;

#ifdef FIONBIO
		BIO_socket_ioctl(s,FIONBIO,&l);
#endif
		}
	else
		s= *sock;

	i=connect(s,(struct sockaddr *)&them,sizeof(them));
	if (i == INVALID_SOCKET)
		{
		if (BIO_sock_should_retry(i))
			return(-1);
		else
			return(0);
		}
	else
		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) Free(name);
		SHUTDOWN2(sock);
		if (i < 0)
			{
			SHUTDOWN2(accept_socket);
			return(i);
			}
		}
	}

int init_server_long(int *sock, int port, char *ip)
	{
	int ret=0;
	struct sockaddr_in server;
	int s= -1,i;

	if (!sock_init()) return(0);

	memset((char *)&server,0,sizeof(server));
	server.sin_family=AF_INET;
	server.sin_port=htons((unsigned short)port);
	if (ip == NULL)
		server.sin_addr.s_addr=INADDR_ANY;
	else
/* Added for T3E, address-of fails on bit field (beckman@acl.lanl.gov) */
#ifndef BIT_FIELD_LIMITS
		memcpy(&server.sin_addr.s_addr,ip,4);
#else
		memcpy(&server.sin_addr,ip,4);
#endif
	s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);

	if (s == INVALID_SOCKET) goto err;
#if defined SOL_SOCKET && defined SO_REUSEADDR
		{
		int j = 1;
		setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
			   (void *) &j, sizeof j);
		}
#endif
	if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
		{
#ifndef WINDOWS
		perror("bind");
#endif
		goto err;
		}
	/* Make it 128 for linux */
	if (listen(s,128) == -1) goto err;
	i=0;
	*sock=s;
	ret=1;
err:
	if ((ret == 0) && (s != -1))
		{
		SHUTDOWN(s);
		}
	return(ret);
	}

int init_server(int *sock, int port)
	{
	return(init_server_long(sock, port, NULL));
	}

int do_accept(int acc_sock, int *sock, char **host)
	{
	int ret,i;
	struct hostent *h1,*h2;
	static struct sockaddr_in from;
	int len;
/*	struct linger ling; */

	if (!sock_init()) return(0);

#ifndef WINDOWS
redoit:
#endif

	memset((char *)&from,0,sizeof(from));
	len=sizeof(from);
	/* Note: under VMS with SOCKETSHR the third parameter is currently
	 * of type (int *) 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 (int *) or (void *).
	 */
	ret=accept(acc_sock,(struct sockaddr *)&from,(void *)&len);
	if (ret == INVALID_SOCKET)
		{
#ifdef WINDOWS
		i=WSAGetLastError();
		BIO_printf(bio_err,"accept error %d\n",i);
#else
		if (errno == EINTR)
			{
			/*check_timeout(); */
			goto redoit;
			}
		fprintf(stderr,"errno=%d ",errno);
		perror("accept");
#endif
		return(0);
		}

/*
	ling.l_onoff=1;
	ling.l_linger=0;
	i=setsockopt(ret,SOL_SOCKET,SO_LINGER,(char *)&ling,sizeof(ling));
	if (i < 0) { perror("linger"); return(0); }
	i=0;
	i=setsockopt(ret,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
	if (i < 0) { perror("keepalive"); return(0); }
*/

	if (host == NULL) goto end;
#ifndef BIT_FIELD_LIMITS
	/* I should use WSAAsyncGetHostByName() under windows */
	h1=gethostbyaddr((char *)&from.sin_addr.s_addr,
		sizeof(from.sin_addr.s_addr),AF_INET);
#else
	h1=gethostbyaddr((char *)&from.sin_addr,
		sizeof(struct in_addr),AF_INET);
#endif
	if (h1 == NULL)
		{
		BIO_printf(bio_err,"bad gethostbyaddr\n");
		*host=NULL;
		/* return(0); */
		}
	else
		{
		if ((*host=(char *)Malloc(strlen(h1->h_name)+1)) == NULL)
			{
			perror("Malloc");
			return(0);
			}
		strcpy(*host,h1->h_name);

		h2=GetHostByName(*host);
		if (h2 == NULL)
			{
			BIO_printf(bio_err,"gethostbyname failure\n");
			return(0);
			}
		i=0;
		if (h2->h_addrtype != AF_INET)
			{
			BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
			return(0);
			}
		}
end:
	*sock=ret;
	return(1);
	}

int extract_host_port(char *str, char **host_ptr, unsigned char *ip,
	     short *port_ptr)
	{
	char *h,*p;

	h=str;
	p=strchr(str,':');
	if (p == NULL)
		{
		BIO_printf(bio_err,"no port defined\n");
		return(0);
		}
	*(p++)='\0';

	if ((ip != NULL) && !host_ip(str,ip))
		goto err;
	if (host_ptr != NULL) *host_ptr=h;

	if (!extract_port(p,port_ptr))
		goto err;
	return(1);
err:
	return(0);
	}

int host_ip(char *str, unsigned char ip[4])
	{
	unsigned int in[4]; 
	int i;

	if (sscanf(str,"%d.%d.%d.%d",&(in[0]),&(in[1]),&(in[2]),&(in[3])) == 4)
		{
		for (i=0; i<4; i++)
			if (in[i] > 255)
				{
				BIO_printf(bio_err,"invalid IP address\n");
				goto err;
				}
		ip[0]=in[0];
		ip[1]=in[1];
		ip[2]=in[2];
		ip[3]=in[3];
		}
	else
		{ /* do a gethostbyname */
		struct hostent *he;

		if (!sock_init()) return(0);

		he=GetHostByName(str);
		if (he == NULL)
			{
			BIO_printf(bio_err,"gethostbyname failure\n");
			goto err;
			}
		/* cast to short because of win16 winsock definition */
		if ((short)he->h_addrtype != AF_INET)
			{
			BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
			return(0);
			}
		ip[0]=he->h_addr_list[0][0];
		ip[1]=he->h_addr_list[0][1];
		ip[2]=he->h_addr_list[0][2];
		ip[3]=he->h_addr_list[0][3];
		}
	return(1);
err:
	return(0);
	}

int extract_port(char *str, short *port_ptr)
	{
	int i;
	struct servent *s;

	i=atoi(str);
	if (i != 0)
		*port_ptr=(unsigned short)i;
	else
		{
		s=getservbyname(str,"tcp");
		if (s == NULL)
			{
			BIO_printf(bio_err,"getservbyname failure for %s\n",str);
			return(0);
			}
		*port_ptr=ntohs((unsigned short)s->s_port);
		}
	return(1);
	}

#define GHBN_NUM	4
static struct ghbn_cache_st
	{
	char name[128];
	struct hostent ent;
	unsigned long order;
	} ghbn_cache[GHBN_NUM];

static unsigned long ghbn_hits=0L;
static unsigned long ghbn_miss=0L;

static struct hostent *GetHostByName(char *name)
	{
	struct hostent *ret;
	int i,lowi=0;
	unsigned long low= (unsigned long)-1;

	for (i=0; i<GHBN_NUM; i++)
		{
		if (low > ghbn_cache[i].order)
			{
			low=ghbn_cache[i].order;
			lowi=i;
			}
		if (ghbn_cache[i].order > 0)
			{
			if (strncmp(name,ghbn_cache[i].name,128) == 0)
				break;
			}
		}
	if (i == GHBN_NUM) /* no hit*/
		{
		ghbn_miss++;
		ret=gethostbyname(name);
		if (ret == NULL) return(NULL);
		/* else add to cache */
		strncpy(ghbn_cache[lowi].name,name,128);
		memcpy((char *)&(ghbn_cache[lowi].ent),ret,sizeof(struct hostent));
		ghbn_cache[lowi].order=ghbn_miss+ghbn_hits;
		return(ret);
		}
	else
		{
		ghbn_hits++;
		ret= &(ghbn_cache[i].ent);
		ghbn_cache[i].order=ghbn_miss+ghbn_hits;
		return(ret);
		}
	}

#ifndef MSDOS
int spawn(int argc, char **argv, int *in, int *out)
	{
	int pid;
#define CHILD_READ	p1[0]
#define CHILD_WRITE	p2[1]
#define PARENT_READ	p2[0]
#define PARENT_WRITE	p1[1]
	int p1[2],p2[2];

	if ((pipe(p1) < 0) || (pipe(p2) < 0)) return(-1);

#ifdef VMS
	if ((pid=vfork()) == 0)
#else
	if ((pid=fork()) == 0)
#endif
		{ /* child */
		if (dup2(CHILD_WRITE,fileno(stdout)) < 0)
			perror("dup2");
		if (dup2(CHILD_WRITE,fileno(stderr)) < 0)
			perror("dup2");
		if (dup2(CHILD_READ,fileno(stdin)) < 0)
			perror("dup2");
		close(CHILD_READ); 
		close(CHILD_WRITE);

		close(PARENT_READ);
		close(PARENT_WRITE);
		execvp(argv[0],argv);
		perror("child");
		exit(1);
		}

	/* parent */
	*in= PARENT_READ;
	*out=PARENT_WRITE;
	close(CHILD_READ);
	close(CHILD_WRITE);
	return(pid);
	}
#endif /* MSDOS */


#ifdef undef
	/* Turn on synchronous sockets so that we can do a WaitForMultipleObjects
	 * on sockets */
	{
	SOCKET s;
	int optionValue = SO_SYNCHRONOUS_NONALERT;
	int err;

	err = setsockopt( 
	    INVALID_SOCKET, 
	    SOL_SOCKET, 
	    SO_OPENTYPE, 
	    (char *)&optionValue, 
	    sizeof(optionValue));
	if (err != NO_ERROR) {
	/* failed for some reason... */
		BIO_printf(bio_err, "failed to setsockopt(SO_OPENTYPE, SO_SYNCHRONOUS_ALERT) - %d\n",
			WSAGetLastError());
		}
	}
#endif
Commit	Line	Data
d02b48c6	1	/* apps/s_socket.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
7d7d2cbc UM	59	/* With IPv6, it looks like Digital has mixed up the proper order of
	60	recursive header file inclusion, resulting in the compiler complaining
	61	that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
	62	is needed to have fileno() declared correctly... So let's define u_int */
	63	#if defined(__DECC) && !defined(__U_INT)
	64	#define __U_INT
	65	typedef unsigned int u_int;
	66	#endif
	67
d02b48c6 RE	68	#include <stdio.h>
	69	#include <stdlib.h>
	70	#include <string.h>
	71	#include <errno.h>
	72	#include <signal.h>
	73	#define USE_SOCKETS
	74	#define NON_MAIN
	75	#include "apps.h"
	76	#undef USE_SOCKETS
	77	#undef NON_MAIN
	78	#include "s_apps.h"
ec577822	79	#include <openssl/ssl.h>
d02b48c6	80
7d7d2cbc UM	81	#if (__VMS_VER < 70000000) /* FIONBIO used as a switch to enable ioctl,
	82	and that isn't in VMS < 7.0 */
	83	#undef FIONBIO
	84	#endif
	85	#ifdef VMS /* for vfork() */
	86	#include <processes.h>
	87	#endif
	88
d02b48c6 RE	89	static struct hostent GetHostByName(char name);
d02b48c6 RE	90	int sock_init(void );
d02b48c6 RE	91	#ifdef WIN16
	92	#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
	93	#else
	94	#define SOCKET_PROTOCOL IPPROTO_TCP
	95	#endif
	96
	97	#ifdef WINDOWS
	98	static struct WSAData wsa_state;
	99	static int wsa_init_done=0;
	100
	101	#ifdef WIN16
	102	static HWND topWnd=0;
	103	static FARPROC lpTopWndProc=NULL;
	104	static FARPROC lpTopHookProc=NULL;
	105	extern HINSTANCE _hInstance; /* nice global CRT provides */
	106
6b691a5c UM	107	static LONG FAR PASCAL topHookProc(HWND hwnd, UINT message, WPARAM wParam,
6b691a5c UM	108	LPARAM lParam)
d02b48c6 RE	109	{
	110	if (hwnd == topWnd)
	111	{
	112	switch(message)
	113	{
	114	case WM_DESTROY:
	115	case WM_CLOSE:
	116	SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopWndProc);
	117	sock_cleanup();
	118	break;
	119	}
	120	}
	121	return CallWindowProc(lpTopWndProc,hwnd,message,wParam,lParam);
	122	}
	123
	124	static BOOL CALLBACK enumproc(HWND hwnd,LPARAM lParam)
	125	{
	126	topWnd=hwnd;
	127	return(FALSE);
	128	}
	129
	130	#endif /* WIN32 */
	131	#endif /* WINDOWS */
	132
6b691a5c	133	void sock_cleanup(void)
d02b48c6 RE	134	{
	135	#ifdef WINDOWS
	136	if (wsa_init_done)
	137	{
	138	wsa_init_done=0;
	139	WSACancelBlockingCall();
	140	WSACleanup();
	141	}
	142	#endif
	143	}
	144
6b691a5c	145	int sock_init(void)
d02b48c6 RE	146	{
	147	#ifdef WINDOWS
	148	if (!wsa_init_done)
	149	{
	150	int err;
	151
	152	#ifdef SIGINT
	153	signal(SIGINT,(void (*)(int))sock_cleanup);
	154	#endif
	155	wsa_init_done=1;
	156	memset(&wsa_state,0,sizeof(wsa_state));
	157	if (WSAStartup(0x0101,&wsa_state)!=0)
	158	{
	159	err=WSAGetLastError();
	160	BIO_printf(bio_err,"unable to start WINSOCK, error code=%d\n",err);
	161	return(0);
	162	}
	163
	164	#ifdef WIN16
	165	EnumTaskWindows(GetCurrentTask(),enumproc,0L);
	166	lpTopWndProc=(FARPROC)GetWindowLong(topWnd,GWL_WNDPROC);
	167	lpTopHookProc=MakeProcInstance((FARPROC)topHookProc,_hInstance);
	168
	169	SetWindowLong(topWnd,GWL_WNDPROC,(LONG)lpTopHookProc);
	170	#endif /* WIN16 */
	171	}
	172	#endif /* WINDOWS */
	173	return(1);
	174	}
	175
6b691a5c	176	int init_client(int sock, char host, int port)
d02b48c6 RE	177	{
	178	unsigned char ip[4];
	179	short p=0;
	180
	181	if (!host_ip(host,&(ip[0])))
	182	{
	183	return(0);
	184	}
	185	if (p != 0) port=p;
	186	return(init_client_ip(sock,ip,port));
	187	}
	188
6b691a5c	189	int init_client_ip(int *sock, unsigned char ip[4], int port)
d02b48c6 RE	190	{
	191	unsigned long addr;
	192	struct sockaddr_in them;
	193	int s,i;
	194
	195	if (!sock_init()) return(0);
	196
	197	memset((char *)&them,0,sizeof(them));
	198	them.sin_family=AF_INET;
	199	them.sin_port=htons((unsigned short)port);
	200	addr=(unsigned long)
	201	((unsigned long)ip[0]<<24L)\|
	202	((unsigned long)ip[1]<<16L)\|
	203	((unsigned long)ip[2]<< 8L)\|
	204	((unsigned long)ip[3]);
	205	them.sin_addr.s_addr=htonl(addr);
	206
	207	s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
	208	if (s == INVALID_SOCKET) { perror("socket"); return(0); }
	209
	210	i=0;
	211	i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
	212	if (i < 0) { perror("keepalive"); return(0); }
	213
	214	if (connect(s,(struct sockaddr *)&them,sizeof(them)) == -1)
	215	{ close(s); perror("connect"); return(0); }
	216	*sock=s;
	217	return(1);
	218	}
	219
6b691a5c	220	int nbio_sock_error(int sock)
d02b48c6	221	{
95dc05bc	222	int j,i;
61f5b6f3	223	int size;
d02b48c6 RE	224
d02b48c6 RE	225	size=sizeof(int);
7d7d2cbc UM	226	/* Note: under VMS with SOCKETSHR the third parameter is currently
	227	* of type (int ) whereas under other systems it is (void ) if
	228	* you don't have a cast it will choke the compiler: if you do
	229	* have a cast then you can either go for (int ) or (void ).
	230	*/
	231	i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(char )&j,(void )&size);
d02b48c6 RE	232	if (i < 0)
	233	return(1);
	234	else
	235	return(j);
	236	}
	237
6b691a5c	238	int nbio_init_client_ip(int *sock, unsigned char ip[4], int port)
d02b48c6 RE	239	{
	240	unsigned long addr;
	241	struct sockaddr_in them;
	242	int s,i;
	243
	244	if (!sock_init()) return(0);
	245
	246	memset((char *)&them,0,sizeof(them));
	247	them.sin_family=AF_INET;
	248	them.sin_port=htons((unsigned short)port);
	249	addr= (unsigned long)
	250	((unsigned long)ip[0]<<24L)\|
	251	((unsigned long)ip[1]<<16L)\|
	252	((unsigned long)ip[2]<< 8L)\|
	253	((unsigned long)ip[3]);
	254	them.sin_addr.s_addr=htonl(addr);
	255
	256	if (*sock <= 0)
	257	{
	258	unsigned long l=1;
	259
	260	s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
	261	if (s == INVALID_SOCKET) { perror("socket"); return(0); }
	262
	263	i=0;
	264	i=setsockopt(s,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
	265	if (i < 0) { perror("keepalive"); return(0); }
	266	*sock=s;
	267
	268	#ifdef FIONBIO
58964a49	269	BIO_socket_ioctl(s,FIONBIO,&l);
d02b48c6 RE	270	#endif
	271	}
	272	else
	273	s= *sock;
	274
	275	i=connect(s,(struct sockaddr *)&them,sizeof(them));
	276	if (i == INVALID_SOCKET)
	277	{
	278	if (BIO_sock_should_retry(i))
	279	return(-1);
	280	else
	281	return(0);
	282	}
	283	else
	284	return(1);
	285	}
	286
6b691a5c	287	int do_server(int port, int ret, int (cb)(), char *context)
d02b48c6 RE	288	{
	289	int sock;
	290	char *name;
	291	int accept_socket;
	292	int i;
	293
	294	if (!init_server(&accept_socket,port)) return(0);
	295
	296	if (ret != NULL)
	297	{
	298	*ret=accept_socket;
	299	/* return(1);*/
	300	}
	301	for (;;)
	302	{
	303	if (do_accept(accept_socket,&sock,&name) == 0)
	304	{
	305	SHUTDOWN(accept_socket);
	306	return(0);
	307	}
b4cadc6e	308	i=(*cb)(name,sock, context);
d02b48c6	309	if (name != NULL) Free(name);
58964a49	310	SHUTDOWN2(sock);
d02b48c6 RE	311	if (i < 0)
d02b48c6 RE	312	{
58964a49	313	SHUTDOWN2(accept_socket);
d02b48c6 RE	314	return(i);
	315	}
	316	}
	317	}
	318
6b691a5c	319	int init_server_long(int sock, int port, char ip)
d02b48c6 RE	320	{
	321	int ret=0;
	322	struct sockaddr_in server;
	323	int s= -1,i;
	324
	325	if (!sock_init()) return(0);
	326
	327	memset((char *)&server,0,sizeof(server));
	328	server.sin_family=AF_INET;
	329	server.sin_port=htons((unsigned short)port);
58964a49 RE	330	if (ip == NULL)
	331	server.sin_addr.s_addr=INADDR_ANY;
	332	else
13e91dd3 RE	333	/* Added for T3E, address-of fails on bit field (beckman@acl.lanl.gov) */
13e91dd3 RE	334	#ifndef BIT_FIELD_LIMITS
58964a49	335	memcpy(&server.sin_addr.s_addr,ip,4);
13e91dd3 RE	336	#else
	337	memcpy(&server.sin_addr,ip,4);
	338	#endif
d02b48c6 RE	339	s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
	340
	341	if (s == INVALID_SOCKET) goto err;
cf897932 BM	342	#if defined SOL_SOCKET && defined SO_REUSEADDR
cf897932 BM	343	{
121bd68d	344	int j = 1;
f0f1b4e4	345	setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
7d7d2cbc	346	(void *) &j, sizeof j);
cf897932 BM	347	}
cf897932 BM	348	#endif
d02b48c6 RE	349	if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
	350	{
	351	#ifndef WINDOWS
	352	perror("bind");
	353	#endif
	354	goto err;
	355	}
58964a49 RE	356	/* Make it 128 for linux */
58964a49 RE	357	if (listen(s,128) == -1) goto err;
d02b48c6 RE	358	i=0;
	359	*sock=s;
	360	ret=1;
	361	err:
	362	if ((ret == 0) && (s != -1))
	363	{
	364	SHUTDOWN(s);
	365	}
	366	return(ret);
	367	}
	368
6b691a5c	369	int init_server(int *sock, int port)
58964a49 RE	370	{
	371	return(init_server_long(sock, port, NULL));
	372	}
	373
6b691a5c	374	int do_accept(int acc_sock, int sock, char *host)
d02b48c6 RE	375	{
	376	int ret,i;
	377	struct hostent h1,h2;
	378	static struct sockaddr_in from;
61f5b6f3	379	int len;
d02b48c6 RE	380	/* struct linger ling; */
	381
	382	if (!sock_init()) return(0);
	383
	384	#ifndef WINDOWS
	385	redoit:
	386	#endif
	387
	388	memset((char *)&from,0,sizeof(from));
	389	len=sizeof(from);
7d7d2cbc UM	390	/* Note: under VMS with SOCKETSHR the third parameter is currently
	391	* of type (int ) whereas under other systems it is (void ) if
	392	* you don't have a cast it will choke the compiler: if you do
	393	* have a cast then you can either go for (int ) or (void ).
	394	*/
	395	ret=accept(acc_sock,(struct sockaddr )&from,(void )&len);
d02b48c6 RE	396	if (ret == INVALID_SOCKET)
	397	{
	398	#ifdef WINDOWS
	399	i=WSAGetLastError();
	400	BIO_printf(bio_err,"accept error %d\n",i);
	401	#else
	402	if (errno == EINTR)
	403	{
	404	/check_timeout(); /
	405	goto redoit;
	406	}
	407	fprintf(stderr,"errno=%d ",errno);
	408	perror("accept");
	409	#endif
	410	return(0);
	411	}
	412
	413	/*
	414	ling.l_onoff=1;
	415	ling.l_linger=0;
	416	i=setsockopt(ret,SOL_SOCKET,SO_LINGER,(char *)&ling,sizeof(ling));
	417	if (i < 0) { perror("linger"); return(0); }
	418	i=0;
	419	i=setsockopt(ret,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
	420	if (i < 0) { perror("keepalive"); return(0); }
	421	*/
	422
	423	if (host == NULL) goto end;
58964a49	424	#ifndef BIT_FIELD_LIMITS
d02b48c6 RE	425	/* I should use WSAAsyncGetHostByName() under windows */
	426	h1=gethostbyaddr((char *)&from.sin_addr.s_addr,
	427	sizeof(from.sin_addr.s_addr),AF_INET);
58964a49 RE	428	#else
	429	h1=gethostbyaddr((char *)&from.sin_addr,
	430	sizeof(struct in_addr),AF_INET);
	431	#endif
d02b48c6 RE	432	if (h1 == NULL)
	433	{
	434	BIO_printf(bio_err,"bad gethostbyaddr\n");
	435	*host=NULL;
	436	/* return(0); */
	437	}
	438	else
	439	{
	440	if ((host=(char )Malloc(strlen(h1->h_name)+1)) == NULL)
	441	{
	442	perror("Malloc");
	443	return(0);
	444	}
	445	strcpy(*host,h1->h_name);
	446
	447	h2=GetHostByName(*host);
	448	if (h2 == NULL)
	449	{
	450	BIO_printf(bio_err,"gethostbyname failure\n");
	451	return(0);
	452	}
	453	i=0;
	454	if (h2->h_addrtype != AF_INET)
	455	{
	456	BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
	457	return(0);
	458	}
	459	}
	460	end:
	461	*sock=ret;
	462	return(1);
	463	}
	464
6b691a5c UM	465	int extract_host_port(char str, char host_ptr, unsigned char ip,
6b691a5c UM	466	short *port_ptr)
d02b48c6 RE	467	{
	468	char h,p;
	469
	470	h=str;
	471	p=strchr(str,':');
	472	if (p == NULL)
	473	{
	474	BIO_printf(bio_err,"no port defined\n");
	475	return(0);
	476	}
	477	*(p++)='\0';
	478
	479	if ((ip != NULL) && !host_ip(str,ip))
	480	goto err;
	481	if (host_ptr != NULL) *host_ptr=h;
	482
	483	if (!extract_port(p,port_ptr))
	484	goto err;
	485	return(1);
	486	err:
	487	return(0);
	488	}
	489
6b691a5c	490	int host_ip(char *str, unsigned char ip[4])
d02b48c6 RE	491	{
	492	unsigned int in[4];
	493	int i;
	494
	495	if (sscanf(str,"%d.%d.%d.%d",&(in[0]),&(in[1]),&(in[2]),&(in[3])) == 4)
	496	{
	497	for (i=0; i<4; i++)
	498	if (in[i] > 255)
	499	{
	500	BIO_printf(bio_err,"invalid IP address\n");
	501	goto err;
	502	}
	503	ip[0]=in[0];
	504	ip[1]=in[1];
	505	ip[2]=in[2];
	506	ip[3]=in[3];
	507	}
	508	else
	509	{ /* do a gethostbyname */
	510	struct hostent *he;
	511
	512	if (!sock_init()) return(0);
	513
	514	he=GetHostByName(str);
	515	if (he == NULL)
	516	{
	517	BIO_printf(bio_err,"gethostbyname failure\n");
	518	goto err;
	519	}
	520	/* cast to short because of win16 winsock definition */
	521	if ((short)he->h_addrtype != AF_INET)
	522	{
	523	BIO_printf(bio_err,"gethostbyname addr is not AF_INET\n");
	524	return(0);
	525	}
	526	ip[0]=he->h_addr_list[0][0];
	527	ip[1]=he->h_addr_list[0][1];
	528	ip[2]=he->h_addr_list[0][2];
	529	ip[3]=he->h_addr_list[0][3];
	530	}
	531	return(1);
	532	err:
	533	return(0);
	534	}
	535
6b691a5c	536	int extract_port(char str, short port_ptr)
d02b48c6 RE	537	{
	538	int i;
	539	struct servent *s;
	540
	541	i=atoi(str);
	542	if (i != 0)
	543	*port_ptr=(unsigned short)i;
	544	else
	545	{
	546	s=getservbyname(str,"tcp");
	547	if (s == NULL)
	548	{
	549	BIO_printf(bio_err,"getservbyname failure for %s\n",str);
	550	return(0);
	551	}
	552	*port_ptr=ntohs((unsigned short)s->s_port);
	553	}
	554	return(1);
	555	}
	556
	557	#define GHBN_NUM 4
	558	static struct ghbn_cache_st
	559	{
	560	char name[128];
	561	struct hostent ent;
	562	unsigned long order;
	563	} ghbn_cache[GHBN_NUM];
	564
	565	static unsigned long ghbn_hits=0L;
	566	static unsigned long ghbn_miss=0L;
	567
6b691a5c	568	static struct hostent GetHostByName(char name)
d02b48c6 RE	569	{
	570	struct hostent *ret;
	571	int i,lowi=0;
	572	unsigned long low= (unsigned long)-1;
	573
	574	for (i=0; i<GHBN_NUM; i++)
	575	{
	576	if (low > ghbn_cache[i].order)
	577	{
	578	low=ghbn_cache[i].order;
	579	lowi=i;
	580	}
	581	if (ghbn_cache[i].order > 0)
	582	{
	583	if (strncmp(name,ghbn_cache[i].name,128) == 0)
	584	break;
	585	}
	586	}
	587	if (i == GHBN_NUM) /* no hit*/
	588	{
	589	ghbn_miss++;
	590	ret=gethostbyname(name);
	591	if (ret == NULL) return(NULL);
	592	/* else add to cache */
	593	strncpy(ghbn_cache[lowi].name,name,128);
	594	memcpy((char *)&(ghbn_cache[lowi].ent),ret,sizeof(struct hostent));
	595	ghbn_cache[lowi].order=ghbn_miss+ghbn_hits;
	596	return(ret);
	597	}
	598	else
	599	{
	600	ghbn_hits++;
	601	ret= &(ghbn_cache[i].ent);
	602	ghbn_cache[i].order=ghbn_miss+ghbn_hits;
	603	return(ret);
	604	}
	605	}
	606
	607	#ifndef MSDOS
6b691a5c	608	int spawn(int argc, char *argv, int in, int *out)
d02b48c6 RE	609	{
	610	int pid;
	611	#define CHILD_READ p1[0]
	612	#define CHILD_WRITE p2[1]
	613	#define PARENT_READ p2[0]
	614	#define PARENT_WRITE p1[1]
	615	int p1[2],p2[2];
	616
	617	if ((pipe(p1) < 0) \|\| (pipe(p2) < 0)) return(-1);
	618
7d7d2cbc UM	619	#ifdef VMS
	620	if ((pid=vfork()) == 0)
	621	#else
d02b48c6	622	if ((pid=fork()) == 0)
7d7d2cbc	623	#endif
d02b48c6 RE	624	{ /* child */
	625	if (dup2(CHILD_WRITE,fileno(stdout)) < 0)
	626	perror("dup2");
	627	if (dup2(CHILD_WRITE,fileno(stderr)) < 0)
	628	perror("dup2");
	629	if (dup2(CHILD_READ,fileno(stdin)) < 0)
	630	perror("dup2");
	631	close(CHILD_READ);
	632	close(CHILD_WRITE);
	633
	634	close(PARENT_READ);
	635	close(PARENT_WRITE);
	636	execvp(argv[0],argv);
	637	perror("child");
	638	exit(1);
	639	}
	640
	641	/* parent */
	642	*in= PARENT_READ;
	643	*out=PARENT_WRITE;
	644	close(CHILD_READ);
	645	close(CHILD_WRITE);
	646	return(pid);
	647	}
	648	#endif /* MSDOS */
	649
	650
	651	#ifdef undef
	652	/* Turn on synchronous sockets so that we can do a WaitForMultipleObjects
	653	* on sockets */
	654	{
	655	SOCKET s;
	656	int optionValue = SO_SYNCHRONOUS_NONALERT;
	657	int err;
	658
	659	err = setsockopt(
	660	INVALID_SOCKET,
	661	SOL_SOCKET,
	662	SO_OPENTYPE,
	663	(char *)&optionValue,
	664	sizeof(optionValue));
	665	if (err != NO_ERROR) {
	666	/* failed for some reason... */
	667	BIO_printf(bio_err, "failed to setsockopt(SO_OPENTYPE, SO_SYNCHRONOUS_ALERT) - %d\n",
	668	WSAGetLastError());
	669	}
	670	}
	671	#endif