--- /dev/null
+/* Copyright 2004 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
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <asm/bitops.h>
+#include <asm/types.h>
+
+#include <linux/netfilter_ipv4/ip_set_nethash.h>
+#include <linux/netfilter_ipv4/ip_set_jhash.h>
+
+#include "ipset.h"
+
+#define BUFLEN 30;
+
+#define OPT_CREATE_HASHSIZE 0x01U
+#define OPT_CREATE_PROBES 0x02U
+#define OPT_CREATE_RESIZE 0x04U
+
+/* Initialize the create. */
+void create_init(void *data)
+{
+ struct ip_set_req_nethash_create *mydata =
+ (struct ip_set_req_nethash_create *) 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 */
+int create_parse(int c, char *argv[], void *data, unsigned *flags)
+{
+ struct ip_set_req_nethash_create *mydata =
+ (struct ip_set_req_nethash_create *) 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. */
+void create_final(void *data, unsigned int flags)
+{
+#ifdef IPSET_DEBUG
+ struct ip_set_req_nethash_create *mydata =
+ (struct ip_set_req_nethash_create *) data;
+
+ DP("hashsize %u probes %u resize %u",
+ mydata->hashsize, mydata->probes, mydata->resize);
+#endif
+}
+
+/* Create commandline options */
+static struct option create_opts[] = {
+ {"hashsize", 1, 0, '1'},
+ {"probes", 1, 0, '2'},
+ {"resize", 1, 0, '3'},
+ {0}
+};
+
+/* Add, del, test parser */
+ip_set_ip_t adt_parser(unsigned cmd, const char *optarg, void *data)
+{
+ struct ip_set_req_nethash *mydata =
+ (struct ip_set_req_nethash *) data;
+ char *saved = ipset_strdup(optarg);
+ 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'", optarg);
+ } else
+ if (string_to_number(tmp, 1, 31, &cidr))
+ exit_error(PARAMETER_PROBLEM,
+ "Out of range cidr `%s' specified", optarg);
+
+ mydata->cidr = cidr;
+ parse_ip(ptr, &mydata->ip);
+ if (!mydata->ip)
+ exit_error(PARAMETER_PROBLEM,
+ "Zero valued IP address `%s' specified", ptr);
+ free(saved);
+
+ return mydata->ip;
+};
+
+/*
+ * Print and save
+ */
+
+void initheader(struct set *set, const void *data)
+{
+ struct ip_set_req_nethash_create *header =
+ (struct ip_set_req_nethash_create *) data;
+ struct ip_set_nethash *map =
+ (struct ip_set_nethash *) set->settype->header;
+
+ memset(map, 0, sizeof(struct ip_set_nethash));
+ map->hashsize = header->hashsize;
+ map->probes = header->probes;
+ map->resize = header->resize;
+}
+
+unsigned int
+mask_to_bits(ip_set_ip_t mask)
+{
+ unsigned int bits = 32;
+ ip_set_ip_t maskaddr;
+
+ if (mask == 0xFFFFFFFF)
+ return bits;
+
+ maskaddr = 0xFFFFFFFE;
+ while (--bits >= 0 && maskaddr != mask)
+ maskaddr <<= 1;
+
+ return bits;
+}
+
+void printheader(struct set *set, unsigned options)
+{
+ struct ip_set_nethash *mysetdata =
+ (struct ip_set_nethash *) 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)
+{
+ 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), options), buf);
+ return buf;
+}
+
+void printips(struct set *set, void *data, size_t len, unsigned options)
+{
+ size_t offset = 0;
+ ip_set_ip_t *ip;
+
+ while (offset < len) {
+ ip = data + offset;
+ if (*ip)
+ printf("%s\n", unpack_ip_tostring(*ip, options));
+ offset += sizeof(ip_set_ip_t);
+ }
+}
+
+void saveheader(struct set *set, unsigned options)
+{
+ struct ip_set_nethash *mysetdata =
+ (struct ip_set_nethash *) 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 */
+void saveips(struct set *set, void *data, size_t len, unsigned options)
+{
+ size_t offset = 0;
+ ip_set_ip_t *ip;
+
+ while (offset < len) {
+ ip = data + offset;
+ if (*ip)
+ printf("-A %s %s\n", set->name,
+ unpack_ip_tostring(*ip, options));
+ offset += sizeof(ip_set_ip_t);
+ }
+}
+
+static char * net_tostring(struct set *set, ip_set_ip_t ip, unsigned options)
+{
+ return unpack_ip_tostring(ip, options);
+}
+
+static void parse_net(const char *str, ip_set_ip_t *ip)
+{
+ char *saved = strdup(str);
+ char *ptr, *tmp = saved;
+ ip_set_ip_t cidr;
+
+ ptr = strsep(&tmp, "/");
+
+ if (tmp == NULL)
+ exit_error(PARAMETER_PROBLEM,
+ "Missing cidr from `%s'", str);
+
+ if (string_to_number(tmp, 1, 31, &cidr))
+ exit_error(PARAMETER_PROBLEM,
+ "Out of range cidr `%s' specified", str);
+
+ parse_ip(ptr, ip);
+ free(saved);
+
+ *ip = pack(*ip, cidr);
+}
+
+void 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 = &create_init,
+ .create_parse = &create_parse,
+ .create_final = &create_final,
+ .create_opts = create_opts,
+
+ /* Add/del/test */
+ .adt_size = sizeof(struct ip_set_req_nethash),
+ .adt_parser = &adt_parser,
+
+ /* Printing */
+ .header_size = sizeof(struct ip_set_nethash),
+ .initheader = &initheader,
+ .printheader = &printheader,
+ .printips = &printips, /* We only have the unsorted version */
+ .printips_sorted = &printips,
+ .saveheader = &saveheader,
+ .saveips = &saveips,
+
+ /* Bindings */
+ .bindip_tostring = &net_tostring,
+ .bindip_parse = &parse_net,
+
+ .usage = &usage,
+};
+
+void _init(void)
+{
+ settype_register(&settype_nethash);
+
+}
git://git.onelab.eu / iptables.git / blobdiff