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
load_hash(iphp,list,iocfunc)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