lib/common/load_hash.c

	load_hash.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * Copyright (C) 2002 by Darren Reed.
 *
 * See the IPFILTER.LICENCE file for details on licencing.
 *
 * $Id: load_hash.c,v 1.10 2003/04/26 04:55:11 darrenr Exp $
 */

#include <fcntl.h>
#include <sys/ioctl.h>
#include "ipf.h"
#if SOLARIS2 >= 10
#include "ip_lookup.h"
#include "ip_htable.h"
#else
#include "netinet/ip_lookup.h"
#include "netinet/ip_htable.h"
#endif

static int hashfd = -1;


int load_hash(iphp, list, iocfunc)
iphtable_t *iphp;
iphtent_t *list;
ioctlfunc_t iocfunc;
{
    iplookupop_t op;
    iphtable_t iph;
    iphtent_t *a;
    size_t size;
    int n;

    if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0))
        hashfd = open(IPLOOKUP_NAME, O_RDWR);
    if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0))
        return -1;
    if (list == NULL)
        return 0;

    for (n = 0, a = list; a != NULL; a = a->ipe_next)
        n++;

    op.iplo_arg = 0;
    op.iplo_type = IPLT_HASH;
    op.iplo_unit = iphp->iph_unit;
    strncpy(op.iplo_name, iphp->iph_name, sizeof(op.iplo_name));
    if (*op.iplo_name == '\0')
        op.iplo_arg = IPHASH_ANON;
    op.iplo_size = sizeof(iph);
    op.iplo_struct = &iph;
    iph.iph_unit = iphp->iph_unit;
    iph.iph_type = iphp->iph_type;
    strncpy(iph.iph_name, iphp->iph_name, sizeof(iph.iph_name));
    iph.iph_flags = iphp->iph_flags;
    if (iphp->iph_size == 0)
        size = n * 2 - 1;
    else
        size = iphp->iph_size;
    iph.iph_size = size;
    iph.iph_seed = iphp->iph_seed;
    iph.iph_table = NULL;
    iph.iph_ref = 0;

    if ((*iocfunc)(hashfd, SIOCLOOKUPADDTABLE, &op))
        if ((opts & OPT_DONOTHING) == 0) {
            perror("load_hash:SIOCLOOKUPADDTABLE");
            return -1;
        }

    strncpy(op.iplo_name, iph.iph_name, sizeof(op.iplo_name));
    strncpy(iphp->iph_name, iph.iph_name, sizeof(op.iplo_name));

    if (opts & OPT_VERBOSE) {
        for (a = list; a != NULL; a = a->ipe_next) {
            a->ipe_addr.in4_addr = ntohl(a->ipe_addr.in4_addr);
            a->ipe_mask.in4_addr = ntohl(a->ipe_mask.in4_addr);
        }
        iph.iph_table = calloc(size, sizeof(*iph.iph_table));
        if (iph.iph_table == NULL) {
            perror("calloc(size, sizeof(*iph.iph_table))");
            return -1;
        }
        iph.iph_table[0] = list;
        printhash(&iph, bcopywrap, opts);
        free(iph.iph_table);

        for (a = list; a != NULL; a = a->ipe_next) {
            a->ipe_addr.in4_addr = htonl(a->ipe_addr.in4_addr);
            a->ipe_mask.in4_addr = htonl(a->ipe_mask.in4_addr);
        }
    }

    if (opts & OPT_DEBUG)
        printf("Hash %s:\n", iph.iph_name);

    for (a = list; a != NULL; a = a->ipe_next)
        load_hashnode(iphp->iph_unit, iph.iph_name, a, iocfunc);

    return 0;
}