353 lines
8.2 KiB
C
353 lines
8.2 KiB
C
/*
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* Copyright (c) 1999, Boris Popov
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/route.h>
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/* IPX */
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#include <netipx/ipx.h>
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#include <netipx/ipx_if.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <netncp/ncp_lib.h>
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#define IPX_NODE_LEN 6
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typedef u_long IPXNet;
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typedef u_short IPXPort;
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typedef union ipx_host IPXNode;
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void
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ipx_fprint_node(FILE * file, IPXNode node){
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fprintf(file, "%02X%02X%02X%02X%02X%02X",
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(unsigned char) node.c_host[0],
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(unsigned char) node.c_host[1],
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(unsigned char) node.c_host[2],
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(unsigned char) node.c_host[3],
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(unsigned char) node.c_host[4],
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(unsigned char) node.c_host[5]
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);
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}
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void
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ipx_fprint_network(FILE * file, const IPXNet net){
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fprintf(file, "%08X", (u_int32_t)ntohl(net));
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}
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void
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ipx_fprint_port(FILE * file, IPXPort port)
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{
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fprintf(file, "%04X", ntohs(port));
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}
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void
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ipx_fprint_addr(FILE * file, struct ipx_addr *ipx)
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{
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ipx_fprint_network(file, ipx_netlong(*ipx));
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fprintf(file, ":");
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ipx_fprint_node(file, ipx->x_host);
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fprintf(file, ":");
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ipx_fprint_port(file, ipx->x_port);
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}
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void
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ipx_print_node(IPXNode node)
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{
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ipx_fprint_node(stdout, node);
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}
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void
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ipx_print_network(IPXNet net)
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{
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ipx_fprint_network(stdout, net);
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}
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void
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ipx_print_port(IPXPort port)
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{
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ipx_fprint_port(stdout, port);
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}
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void
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ipx_print_addr(struct ipx_addr *ipx)
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{
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ipx_fprint_addr(stdout, ipx);
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}
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int
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ipx_sscanf_node(char *buf, unsigned char node[6])
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{
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int i;
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int n[6];
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if ((i = sscanf(buf, "%2x%2x%2x%2x%2x%2x",
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&(n[0]), &(n[1]), &(n[2]),
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&(n[3]), &(n[4]), &(n[5]))) != 6)
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{
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return i;
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}
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for (i = 0; i < 6; i++)
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{
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node[i] = n[i];
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}
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return 6;
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}
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int
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ipx_sscanf_saddr(char *buf, struct sockaddr_ipx *target)
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{
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char *p;
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struct sockaddr_ipx addr;
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unsigned long sipx_net;
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addr.sipx_family = AF_IPX;
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/*!! addr.sipx_type = NCP_PTYPE;*/
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if (sscanf(buf, "%lx", &sipx_net) != 1)
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{
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return 1;
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}
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((union ipx_net_u*)(&addr.sipx_addr.x_net))->long_e = htonl(sipx_net);
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if ((p = strchr(buf, ':')) == NULL){
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return 1;
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}
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p += 1;
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if (ipx_sscanf_node(p, addr.sipx_node) != 6)
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{
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return 1;
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}
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if ((p = strchr(p, ':')) == NULL)
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{
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return 1;
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}
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p += 1;
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if (sscanf(p, "%hx", &addr.sipx_port) != 1)
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{
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return 1;
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}
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addr.sipx_port = htons(addr.sipx_port);
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*target = addr;
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return 0;
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}
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void ipx_assign_node(IPXNode *dest, IPXNode *src) {
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memcpy(dest, src, IPX_NODE_LEN);
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}
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static void rt_xaddrs(caddr_t, caddr_t, struct rt_addrinfo *);
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static int if_ipxscan(int addrcount, struct sockaddr_dl *sdl,
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struct if_msghdr *ifm, struct ifa_msghdr *ifam,
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struct ipx_addr *addr);
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/*
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* Find an IPX interface.
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* ifname specifies interface name, if NULL search for all interfaces
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* if ifname[0]='0', also all interfaces, but return its name
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* addr on input preferred net address can be specified or 0 for any,
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* on return contains full address (except port)
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* returns 0 if interface was found
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*/
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int
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ipx_iffind(char *ifname,struct ipx_addr *addr){
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char name[32];
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int all=0, flags, foundit = 0, addrcount;
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struct if_msghdr *ifm, *nextifm;
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struct ifa_msghdr *ifam;
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struct sockaddr_dl *sdl;
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char *buf, *lim, *next;
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size_t needed;
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int mib[6];
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if( ifname!=NULL ) {
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strncpy(name,ifname,sizeof(name)-1);
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if( name[0]==0 )
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all=1;
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} else
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all = 1;
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mib[0] = CTL_NET;
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mib[1] = PF_ROUTE;
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mib[2] = 0;
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mib[3] = AF_IPX;
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mib[4] = NET_RT_IFLIST;
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mib[5] = 0;
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if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
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return(1);
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if ((buf = malloc(needed)) == NULL)
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return(1);
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if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
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free(buf);
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return(1);
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}
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lim = buf + needed;
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next = buf;
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while (next < lim) {
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ifm = (struct if_msghdr *)next;
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if (ifm->ifm_type == RTM_IFINFO) {
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sdl = (struct sockaddr_dl *)(ifm + 1);
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flags = ifm->ifm_flags;
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} else {
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fprintf(stderr, "if_ipxfind: out of sync parsing NET_RT_IFLIST\n");
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fprintf(stderr, "expected %d, got %d\n", RTM_IFINFO, ifm->ifm_type);
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fprintf(stderr, "msglen = %d\n", ifm->ifm_msglen);
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fprintf(stderr, "buf:%p, next:%p, lim:%p\n", buf, next, lim);
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free(buf);
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return(1);
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}
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next += ifm->ifm_msglen;
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ifam = NULL;
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addrcount = 0;
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while (next < lim) {
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nextifm = (struct if_msghdr *)next;
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if (nextifm->ifm_type != RTM_NEWADDR)
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break;
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if (ifam == NULL)
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ifam = (struct ifa_msghdr *)nextifm;
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addrcount++;
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next += nextifm->ifm_msglen;
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}
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if (all) {
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if ((flags & IFF_UP) == 0)
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continue; /* not up */
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strncpy(name, sdl->sdl_data, sdl->sdl_nlen);
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name[sdl->sdl_nlen] = '\0';
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} else {
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if (strlen(name) != sdl->sdl_nlen)
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continue; /* not same len */
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if (strncmp(name, sdl->sdl_data, sdl->sdl_nlen) != 0)
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continue; /* not same name */
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}
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foundit=if_ipxscan(addrcount, sdl, ifm, ifam, addr);
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if( foundit ) {
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if( ifname!=NULL && ifname[0]==0) {
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strncpy(ifname,sdl->sdl_data, sdl->sdl_nlen);
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ifname[sdl->sdl_nlen]=0;
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}
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break;
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}
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}
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free(buf);
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return foundit ? 0:1;
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}
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int
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if_ipxscan(addrcount, sdl, ifm, ifam, addr)
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int addrcount;
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struct sockaddr_dl *sdl;
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struct if_msghdr *ifm;
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struct ifa_msghdr *ifam;
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struct ipx_addr *addr;
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{
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struct rt_addrinfo info;
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struct sockaddr_ipx *sipx;
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int s;
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if ((s = socket(AF_IPX, SOCK_DGRAM, 0)) < 0) {
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perror("ifconfig: socket");
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return 0;
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}
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while (addrcount > 0) {
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info.rti_addrs = ifam->ifam_addrs;
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/* Expand the compacted addresses */
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rt_xaddrs((char *)(ifam + 1), ifam->ifam_msglen + (char *)ifam, &info);
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addrcount--;
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ifam = (struct ifa_msghdr *)((char *)ifam + ifam->ifam_msglen);
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if (info.rti_info[RTAX_IFA]->sa_family == AF_IPX) {
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sipx = (struct sockaddr_ipx *)info.rti_info[RTAX_IFA];
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if( ipx_nullnet(sipx->sipx_addr) ) continue;
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if( ipx_nullnet(*addr) ||
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ipx_neteq(sipx->sipx_addr,*addr) ) {
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*addr=sipx->sipx_addr;
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close(s);
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return(1);
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}
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}
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}
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close(s);
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return(0);
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}
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/*
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* Expand the compacted form of addresses as returned via the
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* configuration read via sysctl().
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*/
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#define ROUNDUP(a) \
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((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
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#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
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static void
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rt_xaddrs(cp, cplim, rtinfo)
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caddr_t cp, cplim;
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struct rt_addrinfo *rtinfo;
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{
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struct sockaddr *sa;
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int i;
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memset(rtinfo->rti_info, 0, sizeof(rtinfo->rti_info));
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for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
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if ((rtinfo->rti_addrs & (1 << i)) == 0)
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continue;
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rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
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ADVANCE(cp, sa);
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}
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}
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