/*

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 *

 *  Jabber

 *  Copyright (C) 1998-1999 The Jabber Team http://jabber.org/

 */

#include "libxode.h"

#include "connwrap.h"

/* socket.c

 *

 * Simple wrapper to make socket creation easy.

 * type = NETSOCKET_SERVER is local listening socket

 * type = NETSOCKET_CLIENT is connection socket

 * type = NETSOCKET_UDP

 */

int make_netsocket(u_short port, char *host, int type, int ssl)

{

    int s, flag = 1;

    struct sockaddr_in sa;

    struct in_addr *saddr;

    int socket_type;

    /* is this a UDP socket or a TCP socket? */

    socket_type = (type == NETSOCKET_UDP)?SOCK_DGRAM:SOCK_STREAM;

    bzero((void *)&sa,sizeof(struct sockaddr_in));

    if((s = socket(AF_INET,socket_type,0)) < 0)

	return(-1);

    if(setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&flag, sizeof(flag)) < 0)

	return(-1);

    saddr = make_addr(host);

    if(saddr == NULL)

	return(-1);

    sa.sin_family = AF_INET;

    sa.sin_port = htons(port);

    if(type == NETSOCKET_SERVER)

    {

	/* bind to specific address if specified */

	if(host != NULL)

	    sa.sin_addr.s_addr = saddr->s_addr;

	if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)

	{

	    close(s);

	    return(-1);

	}

    }

    if(type == NETSOCKET_CLIENT)

    {

	sa.sin_addr.s_addr = saddr->s_addr;

	if(cw_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl) < 0)

	{

	    close(s);

	    return(-1);

	}

    }

    if(type == NETSOCKET_UDP)

    {

	/* bind to all addresses for now */

	if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)

	{

	    close(s);

	    return(-1);

	}

	/* specify default recipient for read/write */

	sa.sin_addr.s_addr = saddr->s_addr;

	if(cw_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl) < 0)

	{

	    close(s);

	    return(-1);

	}

    }

    return(s);

}

void change_socket_to_blocking(int s)

     /* make socket blocking */

{

    int val;

    val = fcntl(s, F_GETFL, 0);

    fcntl(s, F_SETFL, val & (~O_NONBLOCK));

}

void change_socket_to_nonblocking(int s)

     /* make socket non-blocking */

{

    int val;

    val = fcntl(s, F_GETFL, 0);

    fcntl(s, F_SETFL, val | O_NONBLOCK);

}

/* socket.c

 *

 * Simple wrapper to make non-blocking client socket creation easy.

 * type = NETSOCKET_SERVER is local listening socket

 * type = NETSOCKET_CLIENT is connection socket

 * type = NETSOCKET_UDP

 */

int make_nb_netsocket(u_short port, char *host, int type, int ssl, int* state)

{

    int s, flag = 1;

    struct sockaddr_in sa;

    struct in_addr *saddr;

    int socket_type;

    /* is this a UDP socket or a TCP socket? */

    socket_type = (type == NETSOCKET_UDP)?SOCK_DGRAM:SOCK_STREAM;

    bzero((void *)&sa,sizeof(struct sockaddr_in));

    if((s = socket(AF_INET,socket_type,0)) < 0)

	return(-1);

    if(setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&flag, sizeof(flag)) < 0)

	return(-1);

    change_socket_to_nonblocking(s);

    saddr = make_addr(host);

    if(saddr == NULL)

	return(-1);

    sa.sin_family = AF_INET;

    sa.sin_port = htons(port);

    if(type == NETSOCKET_SERVER)

    {

	/* bind to specific address if specified */

	if(host != NULL)

	    sa.sin_addr.s_addr = saddr->s_addr;

	if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)

	{

	    close(s);

	    return(-1);

	}

    }

    if(type == NETSOCKET_CLIENT)

    {

	int rc;

	sa.sin_addr.s_addr = saddr->s_addr;

	rc = cw_nb_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl, state);

	if (rc == -1 )

	{

	    close(s);

	    return(-1);

	}

    }

    if(type == NETSOCKET_UDP)

    {

	/* bind to all addresses for now */

	if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)

	{

	    close(s);

	    return(-1);

	}

	/* specify default recipient for read/write */

	sa.sin_addr.s_addr = saddr->s_addr;

	if(cw_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl) < 0)

	{

	    close(s);

	    return(-1);

	}

    }

    return(s);

}

struct in_addr *make_addr(char *host)

{

    struct hostent *hp;

    static struct in_addr addr;

    char myname[MAXHOSTNAMELEN + 1];

    if(host == NULL || strlen(host) == 0)

    {

	gethostname(myname,MAXHOSTNAMELEN);

	hp = gethostbyname(myname);

	if(hp != NULL)

	{

	    return (struct in_addr *) *hp->h_addr_list;

	}

    }else{

	addr.s_addr = inet_addr(host);

	if(addr.s_addr != -1)

	{

	    return &addr;

	}

	hp = gethostbyname(host);

	if(hp != NULL)

	{

	    return (struct in_addr *) *hp->h_addr_list;

	}

    }

    return NULL;

}

/* Sets a file descriptor to close on exec.  "flag" is 1 to close on exec, 0 to

 * leave open across exec.

 * -- EJB 7/31/2000

 */

int set_fd_close_on_exec(int fd, int flag)

{

    int oldflags = fcntl(fd,F_GETFL);

    int newflags;

    if(flag)

	newflags = oldflags | FD_CLOEXEC;

    else

	newflags = oldflags & (~FD_CLOEXEC);

    if(newflags==oldflags)

	return 0;

    return fcntl(fd,F_SETFL,(long)newflags);

}