1 /* 2 * Copyright (C) 2002 by Darren Reed. 3 * 4 * See the IPFILTER.LICENCE file for details on licencing. 5 * 6 * $Id: load_hash.c,v 1.11.2.2 2005/02/01 02:44:05 darrenr Exp $ 7 * 8 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 9 * Use is subject to license terms. 10 */ 11 12 #pragma ident "%Z%%M% %I% %E% SMI" 13 14 #include <fcntl.h> 15 #include <sys/ioctl.h> 16 #include "ipf.h" 17 #include "netinet/ip_lookup.h" 18 #include "netinet/ip_htable.h" 19 20 static int hashfd = -1; 21 22 23 int load_hash(iphp, list, iocfunc) 24 iphtable_t *iphp; 25 iphtent_t *list; 26 ioctlfunc_t iocfunc; 27 { 28 iplookupop_t op; 29 iphtable_t iph; 30 iphtent_t *a; 31 size_t size; 32 int n; 33 34 if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0)) 35 hashfd = open(IPLOOKUP_NAME, O_RDWR); 36 if ((hashfd == -1) && ((opts & OPT_DONOTHING) == 0)) 37 return -1; 38 39 for (n = 0, a = list; a != NULL; a = a->ipe_next) 40 n++; 41 42 op.iplo_arg = 0; 43 op.iplo_type = IPLT_HASH; 44 op.iplo_unit = iphp->iph_unit; 45 strncpy(op.iplo_name, iphp->iph_name, sizeof(op.iplo_name)); 46 if (*op.iplo_name == '\0') 47 op.iplo_arg = IPHASH_ANON; 48 op.iplo_size = sizeof(iph); 49 op.iplo_struct = &iph; 50 iph.iph_unit = iphp->iph_unit; 51 iph.iph_type = iphp->iph_type; 52 strncpy(iph.iph_name, iphp->iph_name, sizeof(iph.iph_name)); 53 iph.iph_flags = iphp->iph_flags; 54 if (n <= 0) 55 n = 1; 56 if (iphp->iph_size == 0) 57 size = n * 2 - 1; 58 else 59 size = iphp->iph_size; 60 if ((list == NULL) && (size == 1)) { 61 fprintf(stderr, 62 "WARNING: empty hash table %s, recommend setting %s\n", 63 iphp->iph_name, "size to match expected use"); 64 } 65 iph.iph_size = size; 66 iph.iph_seed = iphp->iph_seed; 67 iph.iph_table = NULL; 68 iph.iph_ref = 0; 69 70 if ((opts & OPT_REMOVE) == 0) { 71 if ((*iocfunc)(hashfd, SIOCLOOKUPADDTABLE, &op)) 72 if ((opts & OPT_DONOTHING) == 0) { 73 perror("load_hash:SIOCLOOKUPADDTABLE"); 74 return -1; 75 } 76 } 77 78 strncpy(op.iplo_name, iph.iph_name, sizeof(op.iplo_name)); 79 strncpy(iphp->iph_name, iph.iph_name, sizeof(op.iplo_name)); 80 81 if (opts & OPT_VERBOSE) { 82 for (a = list; a != NULL; a = a->ipe_next) { 83 if (a->ipe_family == AF_INET) { 84 a->ipe_addr.in4_addr = ntohl(a->ipe_addr.in4_addr); 85 a->ipe_mask.in4_addr = ntohl(a->ipe_mask.in4_addr); 86 } 87 } 88 iph.iph_table = calloc(size, sizeof(*iph.iph_table)); 89 if (iph.iph_table == NULL) { 90 perror("calloc(size, sizeof(*iph.iph_table))"); 91 return -1; 92 } 93 iph.iph_table[0] = list; 94 printhash(&iph, bcopywrap, iph.iph_name, opts); 95 free(iph.iph_table); 96 97 for (a = list; a != NULL; a = a->ipe_next) { 98 if (a->ipe_family == AF_INET) { 99 a->ipe_addr.in4_addr = htonl(a->ipe_addr.in4_addr); 100 a->ipe_mask.in4_addr = htonl(a->ipe_mask.in4_addr); 101 } 102 } 103 } 104 105 if (opts & OPT_DEBUG) 106 printf("Hash %s:\n", iph.iph_name); 107 108 for (a = list; a != NULL; a = a->ipe_next) 109 load_hashnode(iphp->iph_unit, iph.iph_name, a, iocfunc); 110 111 if ((opts & OPT_REMOVE) != 0) { 112 if ((*iocfunc)(hashfd, SIOCLOOKUPDELTABLE, &op)) 113 if ((opts & OPT_DONOTHING) == 0) { 114 perror("load_hash:SIOCLOOKUPDELTABLE"); 115 return -1; 116 } 117 } 118 return 0; 119 } 120