--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mcabber/libjabber/socket.c	Sun Mar 27 20:18:21 2005 +0000
@@ -0,0 +1,237 @@
+/*
+ *  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);
+}
+