--- /dev/null
+/* Copyright 2000-2004 Joakim Axelsson (gozem@linux.nu)
+ * Patrick Schaaf (bof@bof.de)
+ * 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 <stdio.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <asm/bitops.h>
+
+#include <linux/netfilter_ipv4/ip_set_ipmap.h>
+#include "ipset.h"
+
+#define BUFLEN 30;
+
+#define OPT_CREATE_FROM 0x01U
+#define OPT_CREATE_TO 0x02U
+#define OPT_CREATE_NETWORK 0x04U
+#define OPT_CREATE_NETMASK 0x08U
+
+#define OPT_ADDDEL_IP 0x01U
+
+/* Initialize the create. */
+void create_init(void *data)
+{
+ struct ip_set_req_ipmap_create *mydata =
+ (struct ip_set_req_ipmap_create *) data;
+
+ DP("create INIT");
+ mydata->netmask = 0xFFFFFFFF;
+}
+
+/* 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_ipmap_create *mydata =
+ (struct ip_set_req_ipmap_create *) data;
+ unsigned int bits;
+
+ DP("create_parse");
+
+ switch (c) {
+ case '1':
+ parse_ip(optarg, &mydata->from);
+
+ *flags |= OPT_CREATE_FROM;
+
+ DP("--from %x (%s)", mydata->from,
+ ip_tostring_numeric(mydata->from));
+
+ break;
+
+ case '2':
+ parse_ip(optarg, &mydata->to);
+
+ *flags |= OPT_CREATE_TO;
+
+ DP("--to %x (%s)", mydata->to,
+ ip_tostring_numeric(mydata->to));
+
+ break;
+
+ case '3':
+ parse_ipandmask(optarg, &mydata->from, &mydata->to);
+
+ /* Make to the last of from + mask */
+ if (mydata->to)
+ mydata->to = mydata->from | ~(mydata->to);
+ else {
+ mydata->from = 0x00000000;
+ mydata->to = 0xFFFFFFFF;
+ }
+ *flags |= OPT_CREATE_NETWORK;
+
+ DP("--network from %x (%s)",
+ mydata->from, ip_tostring_numeric(mydata->from));
+ DP("--network to %x (%s)",
+ mydata->to, ip_tostring_numeric(mydata->to));
+
+ break;
+
+ case '4':
+ if (string_to_number(optarg, 0, 32, &bits))
+ exit_error(PARAMETER_PROBLEM,
+ "Invalid netmask `%s' specified", optarg);
+
+ if (bits != 0)
+ mydata->netmask = 0xFFFFFFFF << (32 - bits);
+
+ *flags |= OPT_CREATE_NETMASK;
+
+ DP("--netmask %x", mydata->netmask);
+
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+#define ERRSTRLEN 256
+
+/* Final check; exit if not ok. */
+void create_final(void *data, unsigned int flags)
+{
+ struct ip_set_req_ipmap_create *mydata =
+ (struct ip_set_req_ipmap_create *) data;
+ ip_set_ip_t range;
+ char errstr[ERRSTRLEN];
+
+ if (flags == 0)
+ exit_error(PARAMETER_PROBLEM,
+ "Need to specify --from and --to, or --network\n");
+
+ if (flags & OPT_CREATE_NETWORK) {
+ /* --network */
+ if ((flags & OPT_CREATE_FROM) || (flags & OPT_CREATE_TO))
+ exit_error(PARAMETER_PROBLEM,
+ "Can't specify --from or --to with --network\n");
+ } else {
+ /* --from --to */
+ if ((flags & OPT_CREATE_FROM) == 0
+ || (flags & OPT_CREATE_TO) == 0)
+ exit_error(PARAMETER_PROBLEM,
+ "Need to specify both --from and --to\n");
+ }
+
+ DP("from : %x to: %x diff: %x",
+ mydata->from, mydata->to,
+ mydata->to - mydata->from);
+
+ if (mydata->from > mydata->to)
+ exit_error(PARAMETER_PROBLEM,
+ "From can't be lower than to.\n");
+
+ if (flags & OPT_CREATE_NETMASK) {
+ unsigned int mask_bits, netmask_bits;
+ ip_set_ip_t mask;
+
+ if ((mydata->from & mydata->netmask) != mydata->from)
+ exit_error(PARAMETER_PROBLEM,
+ "%s is not a network address according to netmask %d\n",
+ ip_tostring_numeric(mydata->from),
+ mask_to_bits(mydata->netmask));
+
+ mask = range_to_mask(mydata->from, mydata->to, &mask_bits);
+ if (!mask
+ && (mydata->from || mydata->to != 0xFFFFFFFF)) {
+ strncpy(errstr, ip_tostring_numeric(mydata->from),
+ ERRSTRLEN-2);
+ errstr[ERRSTRLEN-1] = '\0';
+ exit_error(PARAMETER_PROBLEM,
+ "%s-%s is not a full network (%x)\n",
+ errstr,
+ ip_tostring_numeric(mydata->to), mask);
+ }
+ netmask_bits = mask_to_bits(mydata->netmask);
+
+ if (netmask_bits <= mask_bits) {
+ strncpy(errstr, ip_tostring_numeric(mydata->from),
+ ERRSTRLEN-2);
+ errstr[ERRSTRLEN-1] = '\0';
+ exit_error(PARAMETER_PROBLEM,
+ "%d netmask specifies larger or equal netblock than %s-%s (%d)\n",
+ netmask_bits,
+ errstr,
+ ip_tostring_numeric(mydata->to),
+ mask_bits);
+ }
+ range = (1<<(netmask_bits - mask_bits)) - 1;
+ } else {
+ range = mydata->to - mydata->from;
+ }
+ if (range > MAX_RANGE)
+ exit_error(PARAMETER_PROBLEM,
+ "Range to large. Max is %d IPs in range\n",
+ MAX_RANGE+1);
+}
+
+/* Create commandline options */
+static struct option create_opts[] = {
+ {"from", 1, 0, '1'},
+ {"to", 1, 0, '2'},
+ {"network", 1, 0, '3'},
+ {"netmask", 1, 0, '4'},
+ {0}
+};
+
+/* Add, del, test parser */
+ip_set_ip_t adt_parser(unsigned cmd, const char *optarg, void *data)
+{
+ struct ip_set_req_ipmap *mydata =
+ (struct ip_set_req_ipmap *) data;
+
+ DP("ipmap: %p %p", optarg, data);
+
+ parse_ip(optarg, &mydata->ip);
+ DP("%s", ip_tostring_numeric(mydata->ip));
+
+ return 1;
+}
+
+/*
+ * Print and save
+ */
+
+void initheader(struct set *set, const void *data)
+{
+ struct ip_set_req_ipmap_create *header =
+ (struct ip_set_req_ipmap_create *) data;
+ struct ip_set_ipmap *map =
+ (struct ip_set_ipmap *) set->settype->header;
+
+ memset(map, 0, sizeof(struct ip_set_ipmap));
+ map->first_ip = header->from;
+ map->last_ip = header->to;
+ map->netmask = header->netmask;
+
+ if (map->netmask == 0xFFFFFFFF) {
+ map->hosts = 1;
+ map->sizeid = map->last_ip - map->first_ip + 1;
+ } else {
+ unsigned int mask_bits, netmask_bits;
+ ip_set_ip_t mask;
+
+ mask = range_to_mask(header->from, header->to, &mask_bits);
+ netmask_bits = mask_to_bits(header->netmask);
+
+ DP("bits: %i %i", mask_bits, netmask_bits);
+ map->hosts = 2 << (32 - netmask_bits - 1);
+ map->sizeid = 2 << (netmask_bits - mask_bits - 1);
+ }
+
+ DP("%i %i", map->hosts, map->sizeid );
+}
+
+void printheader(struct set *set, unsigned options)
+{
+ struct ip_set_ipmap *mysetdata =
+ (struct ip_set_ipmap *) set->settype->header;
+
+ printf(" from: %s", ip_tostring(mysetdata->first_ip, options));
+ printf(" to: %s", ip_tostring(mysetdata->last_ip, options));
+ if (mysetdata->netmask == 0xFFFFFFFF)
+ printf("\n");
+ else
+ printf(" netmask: %d\n", mask_to_bits(mysetdata->netmask));
+}
+
+void printips_sorted(struct set *set, void *data, size_t len, unsigned options)
+{
+ struct ip_set_ipmap *mysetdata =
+ (struct ip_set_ipmap *) set->settype->header;
+ ip_set_ip_t id;
+
+ for (id = 0; id < mysetdata->sizeid; id++)
+ if (test_bit(id, data))
+ printf("%s\n",
+ ip_tostring(mysetdata->first_ip
+ + id * mysetdata->hosts,
+ options));
+}
+
+void saveheader(struct set *set, unsigned options)
+{
+ struct ip_set_ipmap *mysetdata =
+ (struct ip_set_ipmap *) set->settype->header;
+
+ printf("-N %s %s --from %s",
+ set->name, set->settype->typename,
+ ip_tostring(mysetdata->first_ip, options));
+ printf(" --to %s",
+ ip_tostring(mysetdata->last_ip, options));
+ if (mysetdata->netmask == 0xFFFFFFFF)
+ printf("\n");
+ else
+ printf(" --netmask %d\n",
+ mask_to_bits(mysetdata->netmask));
+}
+
+void saveips(struct set *set, void *data, size_t len, unsigned options)
+{
+ struct ip_set_ipmap *mysetdata =
+ (struct ip_set_ipmap *) set->settype->header;
+ ip_set_ip_t id;
+
+ DP("%s", set->name);
+ for (id = 0; id < mysetdata->sizeid; id++)
+ if (test_bit(id, data))
+ printf("-A %s %s\n",
+ set->name,
+ ip_tostring(mysetdata->first_ip
+ + id * mysetdata->hosts,
+ options));
+}
+
+void usage(void)
+{
+ printf
+ ("-N set ipmap --from IP --to IP [--netmask CIDR-netmask]\n"
+ "-N set ipmap --network IP/mask [--netmask CIDR-netmask]\n"
+ "-A set IP\n"
+ "-D set IP\n"
+ "-T set IP\n");
+}
+
+static struct settype settype_ipmap = {
+ .typename = SETTYPE_NAME,
+ .protocol_version = IP_SET_PROTOCOL_VERSION,
+
+ /* Create */
+ .create_size = sizeof(struct ip_set_req_ipmap_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_ipmap),
+ .adt_parser = &adt_parser,
+
+ /* Printing */
+ .header_size = sizeof(struct ip_set_ipmap),
+ .initheader = &initheader,
+ .printheader = &printheader,
+ .printips = &printips_sorted, /* We only have sorted version */
+ .printips_sorted = &printips_sorted,
+ .saveheader = &saveheader,
+ .saveips = &saveips,
+
+ /* Bindings */
+ .bindip_tostring = &binding_ip_tostring,
+ .bindip_parse = &parse_ip,
+
+ .usage = &usage,
+};
+
+void _init(void)
+{
+ settype_register(&settype_ipmap);
+
+}
git://git.onelab.eu / iptables.git / blobdiff