Sync libjabber with upstream
Sync with jabberd-1.4.4.
/*
* 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.
*
* Copyrights
*
* Portions created by or assigned to Jabber.com, Inc. are
* Copyright (c) 1999-2002 Jabber.com, Inc. All Rights Reserved. Contact
* information for Jabber.com, Inc. is available at http://www.jabber.com/.
*
* Portions Copyright (c) 1998-1999 Jeremie Miller.
*
* Acknowledgements
*
* Special thanks to the Jabber Open Source Contributors for their
* suggestions and support of Jabber.
*
*/
/**
* @file socket.c
* @brief some misc functions to handle sockets
*/
#include "libxode.h"
#include "connwrap.h"
/**
* Simple wrapper to make socket creation easy.
*
* @param port port number of the socket
* @param host hostname where to connect to or listen on
* @param type type of socket (NETSOCKET_SERVER, NETSOCKET_CLIENT; or NETSOCKET_UDP)
* @return file handle of the new socket
*
* NETSOCKET_SERVER is local listening socket
* NETSOCKET_CLIENT is connection socket
*/
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.
*
* @param fd the file descriptor
* @param flag 1 to close on exec, 0 to leave open across exec
*
* @deprecated this function is not used by jabberd14 and might be removed in future versions
*/
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);
}