1 /* $NetBSD: load_hash.c,v 1.3 2019/10/05 23:32:20 mrg Exp $ */
2
3 /*
4 * Copyright (C) 2012 by Darren Reed.
5 *
6 * See the IPFILTER.LICENCE file for details on licencing.
7 *
8 * Id: load_hash.c,v 1.1.1.2 2012/07/22 13:44:39 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
17
18 int
load_hash(iphp,list,iocfunc)19 load_hash(iphp, list, iocfunc)
20 iphtable_t *iphp;
21 iphtent_t *list;
22 ioctlfunc_t iocfunc;
23 {
24 iplookupop_t op;
25 iphtable_t iph;
26 iphtent_t *a;
27 size_t size;
28 int n;
29
30 if (pool_open() == -1)
31 return -1;
32
33 for (n = 0, a = list; a != NULL; a = a->ipe_next)
34 n++;
35
36 bzero((char *)&iph, sizeof(iph));
37 op.iplo_arg = 0;
38 op.iplo_type = IPLT_HASH;
39 op.iplo_unit = iphp->iph_unit;
40 strncpy(op.iplo_name, iphp->iph_name, sizeof(op.iplo_name));
41 if (*op.iplo_name == '\0')
42 op.iplo_arg = IPHASH_ANON;
43 op.iplo_size = sizeof(iph);
44 op.iplo_struct = &iph;
45 iph = *iphp;
46 if (n <= 0)
47 n = 1;
48 if (iphp->iph_size == 0)
49 size = n * 2 - 1;
50 else
51 size = iphp->iph_size;
52 if ((list == NULL) && (size == 1)) {
53 fprintf(stderr,
54 "WARNING: empty hash table %s, recommend setting %s\n",
55 iphp->iph_name, "size to match expected use");
56 }
57 iph.iph_size = size;
58 iph.iph_table = NULL;
59 iph.iph_list = NULL;
60 iph.iph_ref = 0;
61
62 if ((opts & OPT_REMOVE) == 0) {
63 if (pool_ioctl(iocfunc, SIOCLOOKUPADDTABLE, &op))
64 if ((opts & OPT_DONOTHING) == 0) {
65 return ipf_perror_fd(pool_fd(), iocfunc,
66 "add lookup hash table");
67 }
68 }
69
70 strncpy(iph.iph_name, op.iplo_name, sizeof(iph.iph_name) - 1);
71 strncpy(iphp->iph_name, op.iplo_name, sizeof(iphp->iph_name) - 1);
72
73 if (opts & OPT_VERBOSE) {
74 iph.iph_table = calloc(size, sizeof(*iph.iph_table));
75 if (iph.iph_table == NULL) {
76 perror("calloc(size, sizeof(*iph.iph_table))");
77 return -1;
78 }
79 iph.iph_list = list;
80 printhash(&iph, bcopywrap, iph.iph_name, opts, NULL);
81 free(iph.iph_table);
82
83 for (a = list; a != NULL; a = a->ipe_next) {
84 a->ipe_addr.in4_addr = htonl(a->ipe_addr.in4_addr);
85 a->ipe_mask.in4_addr = htonl(a->ipe_mask.in4_addr);
86 }
87 }
88
89 if (opts & OPT_DEBUG)
90 printf("Hash %s:\n", iph.iph_name);
91
92 for (a = list; a != NULL; a = a->ipe_next)
93 load_hashnode(iphp->iph_unit, iph.iph_name, a, 0, iocfunc);
94
95 if ((opts & OPT_REMOVE) != 0) {
96 if (pool_ioctl(iocfunc, SIOCLOOKUPDELTABLE, &op))
97 if ((opts & OPT_DONOTHING) == 0) {
98 return ipf_perror_fd(pool_fd(), iocfunc,
99 "delete lookup hash table");
100 }
101 }
102 return 0;
103 }
104