libipt_realm.c revision 69f564e3890976461de0016cd81171ff8bfa8353
12a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)/* Shared library add-on to iptables to add realm matching support. */ 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdio.h> 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <netdb.h> 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string.h> 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdlib.h> 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <errno.h> 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <ctype.h> 8868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include <getopt.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(__GLIBC__) && __GLIBC__ == 2 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <net/ethernet.h> 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <linux/if_ether.h> 13868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#endif 147d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include <xtables.h> 151320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include <linux/netfilter_ipv4/ipt_realm.h> 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)static void realm_help(void) 181320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci{ 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) printf( 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)"realm match options:\n" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)"[!] --realm value[/mask]\n" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)" Match realm\n"); 23116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch} 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static const struct option realm_opts[] = { 26c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) { "realm", 1, NULL, '1' }, 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) { .name = NULL } 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct realmname { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int id; 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) char* name; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int len; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct realmname* next; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* array of realms from /etc/iproute2/rt_realms */ 384e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)static struct realmname *realms = NULL; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1 if loading failed */ 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int rdberr = 0; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void load_realms(void) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* rfnm = "/etc/iproute2/rt_realms"; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char buf[512]; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FILE *fil; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *cur, *nxt; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int id; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct realmname *oldnm = NULL, *newnm = NULL; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 52010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) fil = fopen(rfnm, "r"); 53010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) if (!fil) { 54010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) rdberr = 1; 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) while (fgets(buf, sizeof(buf), fil)) { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur = buf; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while ((*cur == ' ') || (*cur == '\t')) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur++; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((*cur == '#') || (*cur == '\n') || (*cur == 0)) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) /* iproute2 allows hex and dec format */ 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) errno = 0; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) id = strtoul(cur, &nxt, strncmp(cur, "0x", 2) ? 10 : 16); 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((nxt == cur) || errno) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* same boundaries as in iproute2 */ 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (id < 0 || id > 255) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 74868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) cur = nxt; 75868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 76868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (!isspace(*cur)) 77868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) continue; 78868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) while ((*cur == ' ') || (*cur == '\t')) 79868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) cur++; 80868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if ((*cur == '#') || (*cur == '\n') || (*cur == 0)) 81868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) continue; 82868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) nxt = cur; 83868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) while ((*nxt != 0) && !isspace(*nxt)) 84868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) nxt++; 85868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (nxt == cur) 86868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) continue; 87868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 88010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) /* found valid data */ 89010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) newnm = (struct realmname*)malloc(sizeof(struct realmname)); 90010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) if (newnm == NULL) { 91868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) perror("libipt_realm: malloc failed"); 922a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) exit(1); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 94868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) newnm->id = id; 95868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) newnm->len = nxt - cur; 96868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) newnm->name = (char*)malloc(newnm->len + 1); 97868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (newnm->name == NULL) { 98868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) perror("libipt_realm: malloc failed"); 99868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) exit(1); 100868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 101868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) strncpy(newnm->name, cur, newnm->len); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) newnm->name[newnm->len] = 0; 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) newnm->next = NULL; 1042a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (oldnm) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) oldnm->next = newnm; 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) realms = newnm; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) oldnm = newnm; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 111a02191e04bc25c4935f804f2c080ae28663d096dBen Murdoch 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fclose(fil); 1135f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)} 1145f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 1155f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)/* get realm id for name, -1 if error/not found */ 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static int realm_name2id(const char* name) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct realmname* cur; 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((realms == NULL) && (rdberr == 0)) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) load_realms(); 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur = realms; 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (cur == NULL) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (cur) { 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!strncmp(name, cur->name, cur->len + 1)) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return cur->id; 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur = cur->next; 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return -1; 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* get realm name for id, NULL if error/not found */ 134c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdochstatic const char *realm_id2name(int id) 135c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch{ 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct realmname* cur; 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((realms == NULL) && (rdberr == 0)) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) load_realms(); 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur = realms; 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (cur == NULL) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) while (cur) { 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (id == cur->id) 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return cur->name; 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) cur = cur->next; 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)static int realm_parse(int c, char **argv, int invert, unsigned int *flags, 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const void *entry, struct xt_entry_match **match) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct ipt_realm_info *realminfo = (struct ipt_realm_info *)(*match)->data; 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int id; 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (c) { 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char *end; 1592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) case '1': 1602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) xtables_check_inverse(argv[optind-1], &invert, &optind, 0); 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) end = optarg = argv[optind-1]; 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) realminfo->id = strtoul(optarg, &end, 0); 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (end != optarg && (*end == '/' || *end == '\0')) { 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (*end == '/') 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) realminfo->mask = strtoul(end+1, &end, 0); 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) realminfo->mask = 0xffffffff; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (*end != '\0' || end == optarg) 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xtables_error(PARAMETER_PROBLEM, 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Bad realm value `%s'", optarg); 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) id = realm_name2id(optarg); 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (id == -1) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xtables_error(PARAMETER_PROBLEM, 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "Realm `%s' not found", optarg); 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) realminfo->id = id; 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) realminfo->mask = 0xffffffff; 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (invert) 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) realminfo->invert = 1; 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *flags = 1; 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 0; 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return 1; 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 189c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 190c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)static void 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)print_realm(unsigned long id, unsigned long mask, int numeric) 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* name = NULL; 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (mask != 0xffffffff) 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) printf("0x%lx/0x%lx ", id, mask); 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else { 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (numeric == 0) 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) name = realm_id2name(id); 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (name) 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) printf("%s ", name); 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) printf("0x%lx ", id); 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void realm_print(const void *ip, const struct xt_entry_match *match, 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int numeric) 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const struct ipt_realm_info *ri = (const void *)match->data; 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 212c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch if (ri->invert) 213c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch printf("! "); 214c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 215c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch printf("realm "); 216c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch print_realm(ri->id, ri->mask, numeric); 217c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch} 218c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 219c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdochstatic void realm_save(const void *ip, const struct xt_entry_match *match) 2202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles){ 2212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const struct ipt_realm_info *ri = (const void *)match->data; 2222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ri->invert) 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) printf("! "); 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) printf("--realm "); 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) print_realm(ri->id, ri->mask, 0); 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static void realm_check(unsigned int flags) 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!flags) 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xtables_error(PARAMETER_PROBLEM, 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "realm match: You must specify `--realm'"); 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static struct xtables_match realm_mt_reg = { 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .name = "realm", 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .version = XTABLES_VERSION, 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .family = NFPROTO_IPV4, 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .size = XT_ALIGN(sizeof(struct ipt_realm_info)), 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .userspacesize = XT_ALIGN(sizeof(struct ipt_realm_info)), 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .help = realm_help, 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .parse = realm_parse, 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .final_check = realm_check, 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .print = realm_print, 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .save = realm_save, 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) .extra_opts = realm_opts, 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void _init(void) 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) xtables_register_match(&realm_mt_reg); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)