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/* 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 <stdio.h> /* *printf */
#include <string.h> /* mem* */
#include "ipset.h"
#include <linux/netfilter_ipv4/ip_set_portmap.h>
#define BUFLEN 30;
#define OPT_CREATE_FROM 0x01U
#define OPT_CREATE_TO 0x02U
#define OPT_ADDDEL_PORT 0x01U
/* Initialize the create. */
static void
create_init(void *data UNUSED)
{
DP("create INIT");
/* Nothing */
}
/* Function which parses command options; returns true if it ate an option */
static int
create_parse(int c, char *argv[] UNUSED, void *data, unsigned *flags)
{
struct ip_set_req_portmap_create *mydata = data;
DP("create_parse");
switch (c) {
case '1':
parse_port(optarg, &mydata->from);
*flags |= OPT_CREATE_FROM;
DP("--from %x (%s)", mydata->from,
port_tostring(mydata->from, 0));
break;
case '2':
parse_port(optarg, &mydata->to);
*flags |= OPT_CREATE_TO;
DP("--to %x (%s)", mydata->to,
port_tostring(mydata->to, 0));
break;
default:
return 0;
}
return 1;
}
/* Final check; exit if not ok. */
static void
create_final(void *data, unsigned int flags)
{
struct ip_set_req_portmap_create *mydata = data;
if (flags == 0) {
exit_error(PARAMETER_PROBLEM,
"Need to specify --from and --to\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: %d", 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 (mydata->to - mydata->from > MAX_RANGE)
exit_error(PARAMETER_PROBLEM,
"Range too large. Max is %d ports 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'},
{0, 0, 0, 0},
};
/* Add, del, test parser */
static ip_set_ip_t
adt_parser(int cmd UNUSED, const char *arg, void *data)
{
struct ip_set_req_portmap *mydata = data;
parse_port(arg, &mydata->ip);
DP("%s", port_tostring(mydata->ip, 0));
return 1;
}
/*
* Print and save
*/
static void
initheader(struct set *set, const void *data)
{
const struct ip_set_req_portmap_create *header = data;
struct ip_set_portmap *map = set->settype->header;
memset(map, 0, sizeof(struct ip_set_portmap));
map->first_ip = header->from;
map->last_ip = header->to;
}
static void
printheader(struct set *set, unsigned options)
{
struct ip_set_portmap *mysetdata = set->settype->header;
printf(" from: %s", port_tostring(mysetdata->first_ip, options));
printf(" to: %s\n", port_tostring(mysetdata->last_ip, options));
}
static void
printports_sorted(struct set *set, void *data,
size_t len UNUSED, unsigned options)
{
struct ip_set_portmap *mysetdata = set->settype->header;
u_int32_t addr = mysetdata->first_ip;
DP("%u -- %u", mysetdata->first_ip, mysetdata->last_ip);
while (addr <= mysetdata->last_ip) {
if (test_bit(addr - mysetdata->first_ip, data))
printf("%s\n", port_tostring(addr, options));
addr++;
}
}
static char *
binding_port_tostring(struct set *set UNUSED,
ip_set_ip_t ip, unsigned options)
{
return port_tostring(ip, options);
}
static void
saveheader(struct set *set, unsigned options)
{
struct ip_set_portmap *mysetdata = set->settype->header;
printf("-N %s %s --from %s",
set->name,
set->settype->typename,
port_tostring(mysetdata->first_ip, options));
printf(" --to %s\n",
port_tostring(mysetdata->last_ip, options));
}
static void
saveports(struct set *set, void *data,
size_t len UNUSED, unsigned options)
{
struct ip_set_portmap *mysetdata = set->settype->header;
u_int32_t addr = mysetdata->first_ip;
while (addr <= mysetdata->last_ip) {
if (test_bit(addr - mysetdata->first_ip, data))
printf("-A %s %s\n",
set->name,
port_tostring(addr, options));
addr++;
}
}
static void usage(void)
{
printf
("-N set portmap --from PORT --to PORT\n"
"-A set PORT\n"
"-D set PORT\n"
"-T set PORT\n");
}
static struct settype settype_portmap = {
.typename = SETTYPE_NAME,
.protocol_version = IP_SET_PROTOCOL_VERSION,
/* Create */
.create_size = sizeof(struct ip_set_req_portmap_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_portmap),
.adt_parser = &adt_parser,
/* Printing */
.header_size = sizeof(struct ip_set_portmap),
.initheader = &initheader,
.printheader = &printheader,
.printips = &printports_sorted, /* We only have sorted version */
.printips_sorted = &printports_sorted,
.saveheader = &saveheader,
.saveips = &saveports,
/* Bindings */
.bindip_tostring = &binding_port_tostring,
.bindip_parse = &parse_port,
.usage = &usage,
};
CONSTRUCTOR(portmap)
{
settype_register(&settype_portmap);
}
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