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-rw-r--r--src/ipset_ipmap.c376
1 files changed, 376 insertions, 0 deletions
diff --git a/src/ipset_ipmap.c b/src/ipset_ipmap.c
new file mode 100644
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--- /dev/null
+++ b/src/ipset_ipmap.c
@@ -0,0 +1,376 @@
+/* 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> /* *printf */
+#include <string.h> /* mem* */
+
+#include "ipset.h"
+
+#include <linux/netfilter_ipv4/ip_set_ipmap.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. */
+static void
+ipmap_create_init(void *data)
+{
+ struct ip_set_req_ipmap_create *mydata = data;
+
+ DP("create INIT");
+ mydata->netmask = 0xFFFFFFFF;
+}
+
+/* Function which parses command options; returns true if it ate an option */
+static int
+ipmap_create_parse(int c, char *argv[] UNUSED, void *data, unsigned *flags)
+{
+ struct ip_set_req_ipmap_create *mydata = 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;
+}
+
+/* Final check; exit if not ok. */
+static void
+ipmap_create_final(void *data, unsigned int flags)
+{
+ struct ip_set_req_ipmap_create *mydata = data;
+ ip_set_ip_t range;
+
+ 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)) {
+ exit_error(PARAMETER_PROBLEM,
+ "You have to define a full network with --from"
+ " and --to if you specify the --network option\n");
+ }
+ netmask_bits = mask_to_bits(mydata->netmask);
+ if (netmask_bits <= mask_bits) {
+ exit_error(PARAMETER_PROBLEM,
+ "%d netmask specifies larger or equal netblock than the network itself\n");
+ }
+ range = (1<<(netmask_bits - mask_bits)) - 1;
+ } else {
+ range = mydata->to - mydata->from;
+ }
+ if (range > MAX_RANGE)
+ exit_error(PARAMETER_PROBLEM,
+ "Range too large. Max is %d IPs in range\n",
+ MAX_RANGE+1);
+}
+
+/* Create commandline options */
+static const struct option create_opts[] = {
+ {.name = "from", .has_arg = required_argument, .val = '1'},
+ {.name = "to", .has_arg = required_argument, .val = '2'},
+ {.name = "network", .has_arg = required_argument, .val = '3'},
+ {.name = "netmask", .has_arg = required_argument, .val = '4'},
+ {NULL},
+};
+
+/* Add, del, test parser */
+static ip_set_ip_t
+ipmap_adt_parser(int cmd UNUSED, const char *arg, void *data)
+{
+ struct ip_set_req_ipmap *mydata = data;
+
+ DP("ipmap: %p %p", arg, data);
+
+ parse_ip(arg, &mydata->ip);
+ DP("%s", ip_tostring_numeric(mydata->ip));
+
+ return 1;
+}
+
+/*
+ * Print and save
+ */
+
+static void
+ipmap_initheader(struct set *set, const void *data)
+{
+ const struct ip_set_req_ipmap_create *header = data;
+ struct ip_set_ipmap *map = 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: %d %d", mask_bits, netmask_bits);
+ map->hosts = 2 << (32 - netmask_bits - 1);
+ map->sizeid = 2 << (netmask_bits - mask_bits - 1);
+ }
+
+ DP("%d %d", map->hosts, map->sizeid );
+}
+
+static void
+ipmap_printheader(struct set *set, unsigned options)
+{
+ struct ip_set_ipmap *mysetdata = 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));
+}
+
+static inline void
+__ipmap_printips_sorted(struct set *set, void *data,
+ u_int32_t len UNUSED, unsigned options)
+{
+ struct ip_set_ipmap *mysetdata = 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));
+}
+
+static void
+ipmap_printips_sorted(struct set *set, void *data,
+ u_int32_t len, unsigned options,
+ char dont_align)
+{
+ ip_set_ip_t *ip;
+ size_t offset = 0;
+
+ if (dont_align)
+ return __ipmap_printips_sorted(set, data, len, options);
+
+ while (offset < len) {
+ DP("offset: %zu, len %u\n", offset, len);
+ ip = data + offset;
+ printf("%s\n", ip_tostring(*ip, options));
+ offset += IPSET_ALIGN(sizeof(ip_set_ip_t));
+ }
+}
+
+static void
+ipmap_saveheader(struct set *set, unsigned options)
+{
+ struct ip_set_ipmap *mysetdata = 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));
+}
+
+static inline void
+__ipmap_saveips(struct set *set, void *data, u_int32_t len UNUSED,
+ unsigned options)
+{
+ struct ip_set_ipmap *mysetdata = 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));
+}
+
+static void
+ipmap_saveips(struct set *set, void *data, u_int32_t len,
+ unsigned options, char dont_align)
+{
+ ip_set_ip_t *ip;
+ size_t offset = 0;
+
+ if (dont_align)
+ return __ipmap_saveips(set, data, len, options);
+
+ while (offset < len) {
+ ip = data + offset;
+ printf("-A %s %s\n", set->name, ip_tostring(*ip, options));
+ offset += IPSET_ALIGN(sizeof(ip_set_ip_t));
+ }
+}
+
+static void
+ipmap_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 = ipmap_create_init,
+ .create_parse = ipmap_create_parse,
+ .create_final = ipmap_create_final,
+ .create_opts = create_opts,
+
+ /* Add/del/test */
+ .adt_size = sizeof(struct ip_set_req_ipmap),
+ .adt_parser = ipmap_adt_parser,
+
+ /* Printing */
+ .header_size = sizeof(struct ip_set_ipmap),
+ .initheader = ipmap_initheader,
+ .printheader = ipmap_printheader,
+ .printips = ipmap_printips_sorted,
+ .printips_sorted = ipmap_printips_sorted,
+ .saveheader = ipmap_saveheader,
+ .saveips = ipmap_saveips,
+
+ .usage = ipmap_usage,
+};
+
+CONSTRUCTOR(ipmap)
+{
+ settype_register(&settype_ipmap);
+
+}