From f08fd20fb6a2ea4afb92c904dc6852bf01118f95 Mon Sep 17 00:00:00 2001 From: "/C=DE/ST=Berlin/L=Berlin/O=Netfilter Project/OU=Development/CN=kadlec/emailAddress=kadlec@netfilter.org" Date: Thu, 13 Oct 2005 08:55:32 +0000 Subject: ipporthash set type added plus manpage corrections (JK) --- ipset_ipporthash.c | 374 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 374 insertions(+) create mode 100644 ipset_ipporthash.c (limited to 'ipset_ipporthash.c') diff --git a/ipset_ipporthash.c b/ipset_ipporthash.c new file mode 100644 index 0000000..e615cea --- /dev/null +++ b/ipset_ipporthash.c @@ -0,0 +1,374 @@ +/* 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "ipset.h" + +#define OPT_CREATE_HASHSIZE 0x01U +#define OPT_CREATE_PROBES 0x02U +#define OPT_CREATE_RESIZE 0x04U +#define OPT_CREATE_NETWORK 0x08U +#define OPT_CREATE_FROM 0x10U +#define OPT_CREATE_TO 0x10U + +/* Initialize the create. */ +void create_init(void *data) +{ + struct ip_set_req_ipporthash_create *mydata = + (struct ip_set_req_ipporthash_create *) data; + + DP("create INIT"); + + /* Default create parameters */ + mydata->hashsize = 1024; + mydata->probes = 8; + 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_ipporthash_create *mydata = + (struct ip_set_req_ipporthash_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; + + case '4': + parse_ip(optarg, &mydata->from); + + *flags |= OPT_CREATE_FROM; + + DP("--from %x (%s)", mydata->from, + ip_tostring_numeric(mydata->from)); + + break; + + case '5': + parse_ip(optarg, &mydata->to); + + *flags |= OPT_CREATE_TO; + + DP("--to %x (%s)", mydata->to, + ip_tostring_numeric(mydata->to)); + + break; + + case '6': + 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; + + default: + return 0; + } + + return 1; +} + +/* Final check; exit if not ok. */ +void create_final(void *data, unsigned int flags) +{ + struct ip_set_req_ipporthash_create *mydata = + (struct ip_set_req_ipporthash_create *) data; + +#ifdef IPSET_DEBUG + DP("hashsize %u probes %u resize %u", + mydata->hashsize, mydata->probes, mydata->resize); +#endif + + 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 (mydata->to - mydata->from > 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[] = { + {"hashsize", 1, 0, '1'}, + {"probes", 1, 0, '2'}, + {"resize", 1, 0, '3'}, + {"from", 1, 0, '4'}, + {"to", 1, 0, '5'}, + {"network", 1, 0, '6'}, + {0} +}; + +/* Add, del, test parser */ +ip_set_ip_t adt_parser(unsigned cmd, const char *optarg, void *data) +{ + struct ip_set_req_ipporthash *mydata = + (struct ip_set_req_ipporthash *) data; + char *saved = strdup(optarg); + char *ptr, *tmp = saved; + + DP("ipporthash: %p %p", optarg, data); + + ptr = strsep(&tmp, "%"); + parse_ip(ptr, &mydata->ip); + + if (tmp) + parse_port(tmp, &mydata->port); + else + exit_error(PARAMETER_PROBLEM, + "IP address and port must be specified: ip%%port"); + free(saved); + return 1; +}; + +/* + * Print and save + */ + +void initheader(struct set *set, const void *data) +{ + struct ip_set_req_ipporthash_create *header = + (struct ip_set_req_ipporthash_create *) data; + struct ip_set_ipporthash *map = + (struct ip_set_ipporthash *) set->settype->header; + + memset(map, 0, sizeof(struct ip_set_ipporthash)); + map->hashsize = header->hashsize; + map->probes = header->probes; + map->resize = header->resize; + map->first_ip = header->from; + map->last_ip = header->to; +} + +void printheader(struct set *set, unsigned options) +{ + struct ip_set_ipporthash *mysetdata = + (struct ip_set_ipporthash *) set->settype->header; + + printf(" from: %s", ip_tostring(mysetdata->first_ip, options)); + printf(" to: %s", ip_tostring(mysetdata->last_ip, options)); + printf(" hashsize: %u", mysetdata->hashsize); + printf(" probes: %u", mysetdata->probes); + printf(" resize: %u\n", mysetdata->resize); +} + +void printips(struct set *set, void *data, size_t len, unsigned options) +{ + struct ip_set_ipporthash *mysetdata = + (struct ip_set_ipporthash *) set->settype->header; + size_t offset = 0; + ip_set_ip_t *ipptr, ip; + uint16_t port; + + while (offset < len) { + ipptr = data + offset; + if (*ipptr) { + ip = (*ipptr>>16) + mysetdata->first_ip; + port = (uint16_t) *ipptr; + printf("%s%%%s\n", + ip_tostring(ip, options), + port_tostring(port, options)); + } + offset += sizeof(ip_set_ip_t); + } +} + +void saveheader(struct set *set, unsigned options) +{ + struct ip_set_ipporthash *mysetdata = + (struct ip_set_ipporthash *) 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)); + printf(" --hashsize %u --probes %u --resize %u\n", + mysetdata->hashsize, mysetdata->probes, mysetdata->resize); +} + +/* Print save for an IP */ +void saveips(struct set *set, void *data, size_t len, unsigned options) +{ + struct ip_set_ipporthash *mysetdata = + (struct ip_set_ipporthash *) set->settype->header; + size_t offset = 0; + ip_set_ip_t *ipptr, ip; + uint16_t port; + + while (offset < len) { + ipptr = data + offset; + if (*ipptr) { + ip = (*ipptr>>16) + mysetdata->first_ip; + port = (uint16_t) *ipptr; + printf("-A %s %s%%%s\n", set->name, + ip_tostring(ip, options), + port_tostring(port, options)); + } + offset += sizeof(ip_set_ip_t); + } +} + +static char buffer[22]; + +static char * unpack_ipport_tostring(struct set *set, ip_set_ip_t bip, unsigned options) +{ + struct ip_set_ipporthash *mysetdata = + (struct ip_set_ipporthash *) set->settype->header; + ip_set_ip_t ip, port; + + ip = (bip>>16) + mysetdata->first_ip; + port = (uint16_t) bip; + sprintf(buffer, "%s%%%s", + ip_tostring(ip, options), port_tostring(port, options)); + + return buffer; +} + +void usage(void) +{ + printf + ("-N set ipporthash --from IP --to IP\n" + " [--hashsize hashsize] [--probes probes ] [--resize resize]\n" + "-N set ipporthash --network IP/mask\n" + " [--hashsize hashsize] [--probes probes ] [--resize resize]\n" + "-A set IP\n" + "-D set IP\n" + "-T set IP\n"); +} + +static struct settype settype_ipporthash = { + .typename = SETTYPE_NAME, + .protocol_version = IP_SET_PROTOCOL_VERSION, + + /* Create */ + .create_size = sizeof(struct ip_set_req_ipporthash_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_ipporthash), + .adt_parser = &adt_parser, + + /* Printing */ + .header_size = sizeof(struct ip_set_ipporthash), + .initheader = &initheader, + .printheader = &printheader, + .printips = &printips, /* We only have the unsorted version */ + .printips_sorted = &printips, + .saveheader = &saveheader, + .saveips = &saveips, + + /* Bindings */ + .bindip_tostring = &unpack_ipport_tostring, + .bindip_parse = &parse_ip, + + .usage = &usage, +}; + +void _init(void) +{ + settype_register(&settype_ipporthash); + +} -- cgit v1.2.3