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freebsd/lib/libncp/ncpl_net.c
Tim J. Robbins 0e66bb97d8 Use a character device and ioctl() for communication between libncp
and the kernel instead of adding more syscalls at runtime. As a bonus,
you can now restrict access to the kernel NCP interface with chmod.
2003-02-28 04:31:29 +00:00

151 lines
4.5 KiB
C

/*
* Copyright (c) 1999, Boris Popov
* All rights reserved.
*
* 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 above 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 software developed by Boris Popov.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/syscall.h>
#include <ctype.h>
#include <netinet/in.h>
#include <netipx/ipx.h>
#include <netdb.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include "ipxsap.h"
#include <netncp/ncp_lib.h>
static int ncp_find_server_in(struct ncp_conn_loginfo *li, int type, char *server_name);
static int
ncp_find_server_ipx(struct ncp_conn_loginfo *li, int type) {
char server[NCP_BINDERY_NAME_LEN + 1];
int error;
char nearest[NCP_BINDERY_NAME_LEN + 1];
struct nw_property prop;
struct ipx_addr *n_addr = (struct ipx_addr *) &prop;
/* struct ncp_conn_loginfo ltmp;*/
int connid;
bzero(server, sizeof(server));
bzero(nearest, sizeof(nearest));
strcpy(server, li->server);
ncp_str_upper(server);
if ((error = sap_find_nearest(type, &li->ipxaddr, nearest)) != 0) {
return error;
}
/* if no server specified return info about nearest */
if (!li->server[0]) {
strcpy(li->server, nearest);
return 0;
}
/* printf("%s\n",ipx_ntoa(li->ipxaddr.sipx_addr));*/
if (strcmp(server, nearest) == 0) {
return 0;
}
/* We have to ask the nearest server for our wanted server */
li->opt=0;
if ((error = ncp_connect(li, &connid)) != 0) {
return error;
}
if (ncp_read_property_value(connid, type, server, 1, "NET_ADDRESS", &prop) != 0) {
ncp_disconnect(connid);
return EHOSTUNREACH;
}
if ((error = ncp_disconnect(connid)) != 0) {
return error;
}
li->ipxaddr.sipx_family = AF_IPX;
li->ipxaddr.sipx_addr.x_net = n_addr->x_net;
li->ipxaddr.sipx_port = n_addr->x_port;
li->ipxaddr.sipx_addr.x_host = n_addr->x_host;
return 0;
}
static int
ncp_find_server_in(struct ncp_conn_loginfo *li, int type, char *server_name) {
struct hostent* h;
int l;
h = gethostbyname(server_name);
if (!h) {
fprintf(stderr, "Get host address `%s': ", server_name);
herror(NULL);
return 1;
}
if (h->h_addrtype != AF_INET) {
fprintf(stderr, "Get host address `%s': Not AF_INET\n", server_name);
return 1;
}
if (h->h_length != 4) {
fprintf(stderr, "Get host address `%s': Bad address length\n", server_name);
return 1;
}
l = sizeof(struct sockaddr_in);
bzero(&li->inaddr, l);
li->inaddr.sin_len = l;
li->inaddr.sin_family = h->h_addrtype;
memcpy(&li->inaddr.sin_addr.s_addr, h->h_addr, 4);
li->inaddr.sin_port = htons(524); /* ncp */
return 0;
}
int
ncp_find_server(struct ncp_conn_loginfo *li, int type, int af, char *name) {
int error = EHOSTUNREACH;
switch(af) {
case AF_IPX:
error = ncp_find_server_ipx(li, type);
break;
case AF_INET:
if (name)
error = ncp_find_server_in(li, type, name);
break;
default:
error = EPROTONOSUPPORT;
}
return error;
}
int
ncp_find_fileserver(struct ncp_conn_loginfo *li, int af, char *name) {
return ncp_find_server(li, NCP_BINDERY_FSERVER, af, name);
}