1/* $NetBSD: load_hash.c,v 1.2 2012/02/15 17:55:06 riz Exp $ */ 2 3/* 4 * Copyright (C) 2002-2005 by Darren Reed. 5 * 6 * See the IPFILTER.LICENCE file for details on licencing. 7 * 8 * Id: load_hash.c,v 1.11.2.6 2009/01/01 03:48:21 darrenr Exp 9 */ 10 11#include <fcntl.h> 12#include <sys/ioctl.h> 13#include "ipf.h" 14#include "netinet/ip_lookup.h" 15#include "netinet/ip_htable.h" 16 17static int hashfd = -1; 18 19 20int load_hash(iphp, list, iocfunc) 21iphtable_t *iphp; 22iphtent_t *list; 23ioctlfunc_t iocfunc; 24{ 25 iplookupop_t op; 26 iphtable_t iph; 27 iphtent_t *a; 28 size_t size; 29 int n; 30 31 if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0)) 32 hashfd = open(IPLOOKUP_NAME, O_RDWR); 33 if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0)) 34 return -1; 35 36 for (n = 0, a = list; a != NULL; a = a->ipe_next) 37 n++; 38 39 bzero((char *)&iph, sizeof(iph)); 40 op.iplo_arg = 0; 41 op.iplo_type = IPLT_HASH; 42 op.iplo_unit = iphp->iph_unit; 43 strncpy(op.iplo_name, iphp->iph_name, sizeof(op.iplo_name)); 44 if (*op.iplo_name == '\0') 45 op.iplo_arg = IPHASH_ANON; 46 op.iplo_size = sizeof(iph); 47 op.iplo_struct = &iph; 48 iph.iph_unit = iphp->iph_unit; 49 iph.iph_type = iphp->iph_type; 50 strncpy(iph.iph_name, iphp->iph_name, sizeof(iph.iph_name)); 51 iph.iph_flags = iphp->iph_flags; 52 if (n <= 0) 53 n = 1; 54 if (iphp->iph_size == 0) 55 size = n * 2 - 1; 56 else 57 size = iphp->iph_size; 58 if ((list == NULL) && (size == 1)) { 59 fprintf(stderr, 60 "WARNING: empty hash table %s, recommend setting %s\n", 61 iphp->iph_name, "size to match expected use"); 62 } 63 iph.iph_size = size; 64 iph.iph_seed = iphp->iph_seed; 65 iph.iph_table = NULL; 66 iph.iph_list = NULL; 67 iph.iph_ref = 0; 68 69 if ((opts & OPT_REMOVE) == 0) { 70 if ((*iocfunc)(hashfd, SIOCLOOKUPADDTABLE, &op)) 71 if ((opts & OPT_DONOTHING) == 0) { 72 perror("load_hash:SIOCLOOKUPADDTABLE"); 73 return -1; 74 } 75 } 76 77 strncpy(iph.iph_name, op.iplo_name, sizeof(op.iplo_name)); 78 strncpy(iphp->iph_name, op.iplo_name, sizeof(op.iplo_name)); 79 80 if (opts & OPT_VERBOSE) { 81 for (a = list; a != NULL; a = a->ipe_next) { 82 a->ipe_addr.in4_addr = ntohl(a->ipe_addr.in4_addr); 83 a->ipe_mask.in4_addr = ntohl(a->ipe_mask.in4_addr); 84 } 85 iph.iph_table = calloc(size, sizeof(*iph.iph_table)); 86 if (iph.iph_table == NULL) { 87 perror("calloc(size, sizeof(*iph.iph_table))"); 88 return -1; 89 } 90 iph.iph_list = list; 91 printhash(&iph, bcopywrap, iph.iph_name, opts); 92 free(iph.iph_table); 93 iph.iph_list = NULL; 94 95 for (a = list; a != NULL; a = a->ipe_next) { 96 a->ipe_addr.in4_addr = htonl(a->ipe_addr.in4_addr); 97 a->ipe_mask.in4_addr = htonl(a->ipe_mask.in4_addr); 98 } 99 } 100 101 if (opts & OPT_DEBUG) 102 printf("Hash %s:\n", iph.iph_name); 103 104 for (a = list; a != NULL; a = a->ipe_next) 105 load_hashnode(iphp->iph_unit, iph.iph_name, a, iocfunc); 106 107 if ((opts & OPT_REMOVE) != 0) { 108 if ((*iocfunc)(hashfd, SIOCLOOKUPDELTABLE, &op)) 109 if ((opts & OPT_DONOTHING) == 0) { 110 perror("load_hash:SIOCLOOKUPDELTABLE"); 111 return -1; 112 } 113 } 114 return 0; 115} 116