From 0278351a9b9208272449ce4d875e265f6a54aee5 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Thu, 22 Apr 2010 16:42:58 +0200 Subject: First staget to ipset-5 Create src/ and move ipset source there. Get rid of unnecessary and outdated files. --- src/ipset_nethash.c | 308 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 308 insertions(+) create mode 100644 src/ipset_nethash.c (limited to 'src/ipset_nethash.c') diff --git a/src/ipset_nethash.c b/src/ipset_nethash.c new file mode 100644 index 0000000..c7891cf --- /dev/null +++ b/src/ipset_nethash.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 /* UINT_MAX */ +#include /* *printf */ +#include /* mem*, str* */ + +#include "ipset.h" + +#include + +#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); + +} -- cgit v1.2.3