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authorJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2010-04-22 16:48:33 +0200
committerJozsef Kadlecsik <kadlec@blackhole.kfki.hu>2010-04-22 16:48:33 +0200
commitf713cb1e105740c29c0a0906f4eb0ba375f64491 (patch)
treeee641fd66f13d401802e256d056f79779fdadb79 /src/ipset_hash_net.c
parent0278351a9b9208272449ce4d875e265f6a54aee5 (diff)
Second stage to ipset-5
Rename files in src/ according to the new naming convention.
Diffstat (limited to 'src/ipset_hash_net.c')
-rw-r--r--src/ipset_hash_net.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/src/ipset_hash_net.c b/src/ipset_hash_net.c
new file mode 100644
index 0000000..c7891cf
--- /dev/null
+++ b/src/ipset_hash_net.c
@@ -0,0 +1,308 @@
+/* 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 <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;
+};
+
+/*
+ * 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);
+
+}