summaryrefslogtreecommitdiffstats
path: root/src/ipset_hash_net.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/ipset_hash_net.c')
-rw-r--r--src/ipset_hash_net.c397
1 files changed, 93 insertions, 304 deletions
diff --git a/src/ipset_hash_net.c b/src/ipset_hash_net.c
index c7891cf..1d70900 100644
--- a/src/ipset_hash_net.c
+++ b/src/ipset_hash_net.c
@@ -1,308 +1,97 @@
-/* Copyright 2004 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
+/* Copyright 2007-2010 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
*/
-
-#include <limits.h> /* UINT_MAX */
-#include <stdio.h> /* *printf */
-#include <string.h> /* mem*, str* */
-
-#include "ipset.h"
-
-#include <linux/netfilter_ipv4/ip_set_nethash.h>
-
-#define BUFLEN 30;
-
-#define OPT_CREATE_HASHSIZE 0x01U
-#define OPT_CREATE_PROBES 0x02U
-#define OPT_CREATE_RESIZE 0x04U
-
-/* Initialize the create. */
-static void
-nethash_create_init(void *data)
-{
- struct ip_set_req_nethash_create *mydata = data;
-
- DP("create INIT");
-
- /* Default create parameters */
- mydata->hashsize = 1024;
- mydata->probes = 4;
- mydata->resize = 50;
-}
-
-/* Function which parses command options; returns true if it ate an option */
-static int
-nethash_create_parse(int c, char *argv[] UNUSED, void *data, unsigned *flags)
-{
- struct ip_set_req_nethash_create *mydata = data;
- ip_set_ip_t value;
-
- DP("create_parse");
-
- switch (c) {
- case '1':
-
- if (string_to_number(optarg, 1, UINT_MAX - 1, &mydata->hashsize))
- exit_error(PARAMETER_PROBLEM, "Invalid hashsize `%s' specified", optarg);
-
- *flags |= OPT_CREATE_HASHSIZE;
-
- DP("--hashsize %u", mydata->hashsize);
-
- break;
-
- case '2':
-
- if (string_to_number(optarg, 1, 65535, &value))
- exit_error(PARAMETER_PROBLEM, "Invalid probes `%s' specified", optarg);
-
- mydata->probes = value;
- *flags |= OPT_CREATE_PROBES;
-
- DP("--probes %u", mydata->probes);
-
- break;
-
- case '3':
-
- if (string_to_number(optarg, 0, 65535, &value))
- exit_error(PARAMETER_PROBLEM, "Invalid resize `%s' specified", optarg);
-
- mydata->resize = value;
- *flags |= OPT_CREATE_RESIZE;
-
- DP("--resize %u", mydata->resize);
-
- break;
-
- default:
- return 0;
- }
-
- return 1;
-}
-
-/* Final check; exit if not ok. */
-static void
-nethash_create_final(void *data UNUSED, unsigned int flags UNUSED)
-{
-}
-
-/* Create commandline options */
-static const struct option create_opts[] = {
- {.name = "hashsize", .has_arg = required_argument, .val = '1'},
- {.name = "probes", .has_arg = required_argument, .val = '2'},
- {.name = "resize", .has_arg = required_argument, .val = '3'},
- {NULL},
-};
-
-/* Add, del, test parser */
-static ip_set_ip_t
-nethash_adt_parser(int cmd, const char *arg, void *data)
-{
- struct ip_set_req_nethash *mydata = data;
- char *saved = ipset_strdup(arg);
- char *ptr, *tmp = saved;
- ip_set_ip_t cidr;
-
- ptr = strsep(&tmp, "/");
-
- if (tmp == NULL) {
- if (cmd == CMD_TEST)
- cidr = 32;
- else
- exit_error(PARAMETER_PROBLEM,
- "Missing cidr from `%s'", arg);
- } else
- if (string_to_number(tmp, 1, 31, &cidr))
- exit_error(PARAMETER_PROBLEM,
- "Out of range cidr `%s' specified", arg);
-
- mydata->cidr = cidr;
- parse_ip(ptr, &mydata->ip);
-#if 0
- if (!mydata->ip)
- exit_error(PARAMETER_PROBLEM,
- "Zero valued IP address `%s' specified", ptr);
-#endif
- ipset_free(saved);
-
- return 1;
+#include <libipset/data.h> /* IPSET_OPT_* */
+#include <libipset/parse.h> /* parser functions */
+#include <libipset/print.h> /* printing functions */
+#include <libipset/types.h> /* prototypes */
+
+/* Parse commandline arguments */
+static const struct ipset_arg hash_net_create_args[] = {
+ { .name = { "hashsize", "--hashsize", NULL },
+ .has_arg = IPSET_MANDATORY_ARG, .opt = IPSET_OPT_HASHSIZE,
+ .parse = ipset_parse_uint32, .print = ipset_print_number,
+ },
+ { .name = { "maxelem", "--maxleme", NULL },
+ .has_arg = IPSET_MANDATORY_ARG, .opt = IPSET_OPT_MAXELEM,
+ .parse = ipset_parse_uint32, .print = ipset_print_number,
+ },
+ { .name = { "probes", "--probes", NULL },
+ .has_arg = IPSET_MANDATORY_ARG, .opt = IPSET_OPT_PROBES,
+ .parse = ipset_parse_uint8, .print = ipset_print_number,
+ },
+ { .name = { "resize", "--resize", NULL },
+ .has_arg = IPSET_MANDATORY_ARG, .opt = IPSET_OPT_RESIZE,
+ .parse = ipset_parse_uint8, .print = ipset_print_number,
+ },
+ { .name = { "timeout", "--timeout", NULL },
+ .has_arg = IPSET_MANDATORY_ARG, .opt = IPSET_OPT_TIMEOUT,
+ .parse = ipset_parse_uint32, .print = ipset_print_number,
+ },
+ { },
+};
+
+static const struct ipset_arg hash_net_add_args[] = {
+ { .name = { "timeout", "--timeout", NULL },
+ .has_arg = IPSET_MANDATORY_ARG, .opt = IPSET_OPT_TIMEOUT,
+ .parse = ipset_parse_uint32, .print = ipset_print_number,
+ },
+ { },
+};
+
+static const char hash_net_usage[] =
+"create SETNAME hash:net\n"
+" [family inet|inet6]\n"
+" [hashsize VALUE] [maxelem VALUE]\n"
+" [probes VALUE] [resize VALUE]\n"
+" [timeout VALUE]\n"
+"add SETNAME IP/CIDR [timeout VALUE]\n"
+"del SETNAME IP/CIDR\n"
+"test SETNAME IP/CIDR\n";
+
+struct ipset_type ipset_hash_net0 = {
+ .name = "hash:net",
+ .alias = "nethash",
+ .revision = 0,
+ .family = AF_INET46,
+ .dimension = IPSET_DIM_ONE,
+ .elem = {
+ [IPSET_DIM_ONE] = {
+ .parse = ipset_parse_net,
+ .print = ipset_print_ip,
+ .opt = IPSET_OPT_IP
+ },
+ },
+ .args = {
+ [IPSET_CREATE] = hash_net_create_args,
+ [IPSET_ADD] = hash_net_add_args,
+ },
+ .mandatory = {
+ [IPSET_CREATE] = 0,
+ [IPSET_ADD] = IPSET_FLAG(IPSET_OPT_IP)
+ | IPSET_FLAG(IPSET_OPT_CIDR),
+ [IPSET_DEL] = IPSET_FLAG(IPSET_OPT_IP)
+ | IPSET_FLAG(IPSET_OPT_CIDR),
+ [IPSET_TEST] = IPSET_FLAG(IPSET_OPT_IP)
+ | IPSET_FLAG(IPSET_OPT_CIDR),
+ },
+ .full = {
+ [IPSET_CREATE] = IPSET_FLAG(IPSET_OPT_HASHSIZE)
+ | IPSET_FLAG(IPSET_OPT_MAXELEM)
+ | IPSET_FLAG(IPSET_OPT_PROBES)
+ | IPSET_FLAG(IPSET_OPT_RESIZE)
+ | IPSET_FLAG(IPSET_OPT_TIMEOUT),
+ [IPSET_ADD] = IPSET_FLAG(IPSET_OPT_IP)
+ | IPSET_FLAG(IPSET_OPT_CIDR)
+ | IPSET_FLAG(IPSET_OPT_TIMEOUT),
+ [IPSET_DEL] = IPSET_FLAG(IPSET_OPT_IP)
+ | IPSET_FLAG(IPSET_OPT_CIDR),
+ [IPSET_TEST] = IPSET_FLAG(IPSET_OPT_IP)
+ | IPSET_FLAG(IPSET_OPT_CIDR),
+ },
+
+ .usage = hash_net_usage,
};
-
-/*
- * Print and save
- */
-
-static void
-nethash_initheader(struct set *set, const void *data)
-{
- const struct ip_set_req_nethash_create *header = data;
- struct ip_set_nethash *map = set->settype->header;
-
- memset(map, 0, sizeof(struct ip_set_nethash));
- map->hashsize = header->hashsize;
- map->probes = header->probes;
- map->resize = header->resize;
-}
-
-static void
-nethash_printheader(struct set *set, unsigned options UNUSED)
-{
- struct ip_set_nethash *mysetdata = set->settype->header;
-
- printf(" hashsize: %u", mysetdata->hashsize);
- printf(" probes: %u", mysetdata->probes);
- printf(" resize: %u\n", mysetdata->resize);
-}
-
-static char buf[20];
-
-static char *
-unpack_ip_tostring(ip_set_ip_t ip, unsigned options UNUSED)
-{
- int i, j = 3;
- unsigned char a, b;
-
- ip = htonl(ip);
- for (i = 3; i >= 0; i--)
- if (((unsigned char *)&ip)[i] != 0) {
- j = i;
- break;
- }
-
- a = ((unsigned char *)&ip)[j];
- if (a <= 128) {
- a = (a - 1) * 2;
- b = 7;
- } else if (a <= 192) {
- a = (a - 129) * 4;
- b = 6;
- } else if (a <= 224) {
- a = (a - 193) * 8;
- b = 5;
- } else if (a <= 240) {
- a = (a - 225) * 16;
- b = 4;
- } else if (a <= 248) {
- a = (a - 241) * 32;
- b = 3;
- } else if (a <= 252) {
- a = (a - 249) * 64;
- b = 2;
- } else if (a <= 254) {
- a = (a - 253) * 128;
- b = 1;
- } else {
- a = b = 0;
- }
- ((unsigned char *)&ip)[j] = a;
- b += j * 8;
-
- sprintf(buf, "%u.%u.%u.%u/%u",
- ((unsigned char *)&ip)[0],
- ((unsigned char *)&ip)[1],
- ((unsigned char *)&ip)[2],
- ((unsigned char *)&ip)[3],
- b);
-
- DP("%s %s", ip_tostring(ntohl(ip), 0), buf);
- return buf;
-}
-
-static void
-nethash_printips(struct set *set UNUSED, void *data, u_int32_t len,
- unsigned options, char dont_align)
-{
- size_t offset = 0;
- ip_set_ip_t *ip;
-
- while (offset < len) {
- ip = data + offset;
- printf("%s\n", unpack_ip_tostring(*ip, options));
- offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
- }
-}
-
-static void
-nethash_saveheader(struct set *set, unsigned options UNUSED)
-{
- struct ip_set_nethash *mysetdata = set->settype->header;
-
- printf("-N %s %s --hashsize %u --probes %u --resize %u\n",
- set->name, set->settype->typename,
- mysetdata->hashsize, mysetdata->probes, mysetdata->resize);
-}
-
-/* Print save for an IP */
-static void
-nethash_saveips(struct set *set UNUSED, void *data, u_int32_t len,
- unsigned options, char dont_align)
-{
- size_t offset = 0;
- ip_set_ip_t *ip;
-
- while (offset < len) {
- ip = data + offset;
- printf("-A %s %s\n", set->name,
- unpack_ip_tostring(*ip, options));
- offset += IPSET_VALIGN(sizeof(ip_set_ip_t), dont_align);
- }
-}
-
-static void
-nethash_usage(void)
-{
- printf
- ("-N set nethash [--hashsize hashsize] [--probes probes ]\n"
- " [--resize resize]\n"
- "-A set IP/cidr\n"
- "-D set IP/cidr\n"
- "-T set IP/cidr\n");
-}
-
-static struct settype settype_nethash = {
- .typename = SETTYPE_NAME,
- .protocol_version = IP_SET_PROTOCOL_VERSION,
-
- /* Create */
- .create_size = sizeof(struct ip_set_req_nethash_create),
- .create_init = nethash_create_init,
- .create_parse = nethash_create_parse,
- .create_final = nethash_create_final,
- .create_opts = create_opts,
-
- /* Add/del/test */
- .adt_size = sizeof(struct ip_set_req_nethash),
- .adt_parser = nethash_adt_parser,
-
- /* Printing */
- .header_size = sizeof(struct ip_set_nethash),
- .initheader = nethash_initheader,
- .printheader = nethash_printheader,
- .printips = nethash_printips,
- .printips_sorted = nethash_printips,
- .saveheader = nethash_saveheader,
- .saveips = nethash_saveips,
-
- .usage = nethash_usage,
-};
-
-CONSTRUCTOR(nethash)
-{
- settype_register(&settype_nethash);
-
-}