tools/iptables-test.c

   1 /*
   2  *  Connection Manager
   3  *
   4  *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License version 2 as
   8  *  published by the Free Software Foundation.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  */
  20
  21 #include <getopt.h>
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26 #include <sys/errno.h>
  27 #include <sys/socket.h>
  28 #include <xtables.h>
  29
  30 #include <linux/netfilter_ipv4/ip_tables.h>
  31
  32 #include <glib.h>
  33
  34 static const char *hooknames[] = {
  35         [NF_IP_PRE_ROUTING]     = "PREROUTING",
  36         [NF_IP_LOCAL_IN]        = "INPUT",
  37         [NF_IP_FORWARD]         = "FORWARD",
  38         [NF_IP_LOCAL_OUT]       = "OUTPUT",
  39         [NF_IP_POST_ROUTING]    = "POSTROUTING",
  40 };
  41
  42 #define LABEL_ACCEPT  "ACCEPT"
  43 #define LABEL_DROP    "DROP"
  44 #define LABEL_QUEUE   "QUEUE"
  45 #define LABEL_RETURN  "RETURN"
  46
  47 /* fn returns 0 to continue iteration */
  48 #define _XT_ENTRY_ITERATE_CONTINUE(type, entries, size, n, fn, args...) \
  49 ({                                                              \
  50         unsigned int __i;                                       \
  51         int __n;                                                \
  52         int __ret = 0;                                          \
  53         type *__entry;                                          \
  54                                                                 \
  55         for (__i = 0, __n = 0; __i < (size);                    \
  56              __i += __entry->next_offset, __n++) {              \
  57                 __entry = (void *)(entries) + __i;              \
  58                 if (__n < n)                                    \
  59                         continue;                               \
  60                                                                 \
  61                 __ret = fn(__entry,  ## args);                  \
  62                 if (__ret != 0)                                 \
  63                         break;                                  \
  64         }                                                       \
  65         __ret;                                                  \
  66 })
  67
  68 /* fn returns 0 to continue iteration */
  69 #define _XT_ENTRY_ITERATE(type, entries, size, fn, args...) \
  70         _XT_ENTRY_ITERATE_CONTINUE(type, entries, size, 0, fn, args)
  71
  72 #define ENTRY_ITERATE(entries, size, fn, args...) \
  73         _XT_ENTRY_ITERATE(struct ipt_entry, entries, size, fn, ## args)
  74
  75 #define MIN_ALIGN (__alignof__(struct ipt_entry))
  76
  77 #define ALIGN(s) (((s) + ((MIN_ALIGN)-1)) & ~((MIN_ALIGN)-1))
  78
  79 struct ipt_error_target {
  80         struct xt_entry_target t;
  81         char error[IPT_TABLE_MAXNAMELEN];
  82 };
  83
  84 struct connman_iptables_entry {
  85         int offset;
  86
  87         struct ipt_entry *entry;
  88 };
  89
  90 struct connman_iptables {
  91         int ipt_sock;
  92
  93         struct ipt_getinfo *info;
  94         struct ipt_get_entries *blob_entries;
  95
  96         unsigned int num_entries;
  97         unsigned int old_entries;
  98         unsigned int size;
  99
 100         GList *entries;
 101 };
 102
 103
 104 static struct ipt_entry *get_entry(struct connman_iptables *table,
 105                                         unsigned int offset)
 106 {
 107         return (struct ipt_entry *)((char *)table->blob_entries->entrytable +
 108                                                                         offset);
 109 }
 110
 111 static int is_hook_entry(struct connman_iptables *table,
 112                                 struct ipt_entry *entry)
 113 {
 114         unsigned int i;
 115
 116         for (i = 0; i < NF_INET_NUMHOOKS; i++) {
 117                 if ((table->info->valid_hooks & (1 << i))
 118                 && get_entry(table, table->info->hook_entry[i]) == entry)
 119                         return i;
 120         }
 121
 122         return -1;
 123 }
 124
 125 static unsigned long entry_to_offset(struct connman_iptables *table,
 126                                         struct ipt_entry *entry)
 127 {
 128         return (void *)entry - (void *)table->blob_entries->entrytable;
 129 }
 130
 131 static int target_to_verdict(char *target_name)
 132 {
 133         if (!strcmp(target_name, LABEL_ACCEPT))
 134                 return -NF_ACCEPT - 1;
 135
 136         if (!strcmp(target_name, LABEL_DROP))
 137                 return -NF_DROP - 1;
 138
 139         if (!strcmp(target_name, LABEL_QUEUE))
 140                 return -NF_QUEUE - 1;
 141
 142         if (!strcmp(target_name, LABEL_RETURN))
 143                 return XT_RETURN;
 144
 145         return 0;
 146 }
 147
 148 static gboolean is_builtin_target(char *target_name)
 149 {
 150         if (!strcmp(target_name, LABEL_ACCEPT) ||
 151                 !strcmp(target_name, LABEL_DROP) ||
 152                 !strcmp(target_name, LABEL_QUEUE) ||
 153                 !strcmp(target_name, LABEL_RETURN))
 154                 return TRUE;
 155
 156         return FALSE;
 157 }
 158
 159 static gboolean is_chain(struct connman_iptables *table,
 160                                 struct connman_iptables_entry *e)
 161 {
 162         int builtin;
 163         struct ipt_entry *entry;
 164         struct xt_entry_target *target;
 165
 166         entry = e->entry;
 167         builtin = is_hook_entry(table, entry);
 168         if (builtin >= 0)
 169                 return TRUE;
 170
 171         target = ipt_get_target(entry);
 172         if (!strcmp(target->u.user.name, IPT_ERROR_TARGET))
 173                 return TRUE;
 174
 175         return FALSE;
 176 }
 177
 178 static GList *find_chain_tail(struct connman_iptables *table,
 179                                 char *chain_name)
 180 {
 181         GList *chain_head, *list;
 182         struct connman_iptables_entry *head, *tail;
 183         struct ipt_entry *entry;
 184         struct xt_entry_target *target;
 185         int builtin;
 186
 187         /* First we look for the head */
 188         for (list = table->entries; list; list = list->next) {
 189                 head = list->data;
 190                 entry = head->entry;
 191
 192                 /* Buit-in chain */
 193                 builtin = is_hook_entry(table, entry);
 194                 if (builtin >= 0 && !strcmp(hooknames[builtin], chain_name))
 195                         break;
 196
 197                 /* User defined chain */
 198                 target = ipt_get_target(entry);
 199                 if (!strcmp(target->u.user.name, IPT_ERROR_TARGET) &&
 200                     !strcmp((char *)target->data, chain_name))
 201                         break;
 202         }
 203
 204         if (list == NULL)
 205                 return NULL;
 206
 207         chain_head = list;
 208
 209         /* Then we look for the next chain */
 210         for (list = chain_head->next; list; list = list->next) {
 211                 tail = list->data;
 212                 entry = tail->entry;
 213
 214                 if (is_chain(table, tail))
 215                         return list;
 216         }
 217
 218         /* Nothing found, we return the table end */
 219         return g_list_last(table->entries);
 220 }
 221
 222 static void update_offsets(struct connman_iptables *table)
 223 {
 224         GList *list, *prev;
 225         struct connman_iptables_entry *entry, *prev_entry;
 226
 227         for (list = table->entries; list; list = list->next) {
 228                 entry = list->data;
 229
 230                 if (list == table->entries) {
 231                         entry->offset = 0;
 232
 233                         continue;
 234                 }
 235
 236                 prev = list->prev;
 237                 prev_entry = prev->data;
 238
 239                 entry->offset = prev_entry->offset +
 240                                         prev_entry->entry->next_offset;
 241         }
 242 }
 243
 244 static int connman_add_entry(struct connman_iptables *table,
 245                                 struct ipt_entry *entry, GList *before)
 246 {
 247         struct connman_iptables_entry *e;
 248
 249         if (table == NULL)
 250                 return -1;
 251
 252         e = g_try_malloc0(sizeof(struct connman_iptables_entry));
 253         if (e == NULL)
 254                 return -1;
 255
 256         e->entry = entry;
 257
 258         table->entries = g_list_insert_before(table->entries, before, e);
 259         table->num_entries++;
 260         table->size += entry->next_offset;
 261
 262         update_offsets(table);
 263
 264         return 0;
 265 }
 266
 267 static int connman_iptables_add_chain(struct connman_iptables *table,
 268                                         char *name)
 269 {
 270         GList *last;
 271         struct ipt_entry *entry_head;
 272         struct ipt_entry *entry_return;
 273         struct ipt_error_target *error;
 274         struct ipt_standard_target *standard;
 275         u_int16_t entry_head_size, entry_return_size;
 276
 277         last = g_list_last(table->entries);
 278
 279         /*
 280          * An empty chain is composed of:
 281          * - A head entry, with no match and an error target.
 282          *   The error target data is the chain name.
 283          * - A tail entry, with no match and a standard target.
 284          *   The standard target verdict is XT_RETURN (return to the
 285          *   caller).
 286          */
 287
 288         /* head entry */
 289         entry_head_size = sizeof(struct ipt_entry) +
 290                                 sizeof(struct ipt_error_target);
 291         entry_head = g_try_malloc0(entry_head_size);
 292         if (entry_head == NULL)
 293                 goto err;
 294
 295         memset(entry_head, 0, entry_head_size);
 296
 297         entry_head->target_offset = sizeof(struct ipt_entry);
 298         entry_head->next_offset = entry_head_size;
 299
 300         error = (struct ipt_error_target *) entry_head->elems;
 301         strcpy(error->t.u.user.name, IPT_ERROR_TARGET);
 302         error->t.u.user.target_size = ALIGN(sizeof(struct ipt_error_target));
 303         strcpy(error->error, name);
 304
 305         if (connman_add_entry(table, entry_head, last) < 0)
 306                 goto err;
 307
 308         /* tail entry */
 309         entry_return_size = sizeof(struct ipt_entry) +
 310                                 sizeof(struct ipt_standard_target);
 311         entry_return = g_try_malloc0(entry_return_size);
 312         if (entry_return == NULL)
 313                 goto err;
 314
 315         memset(entry_return, 0, entry_return_size);
 316
 317         entry_return->target_offset = sizeof(struct ipt_entry);
 318         entry_return->next_offset = entry_return_size;
 319
 320         standard = (struct ipt_standard_target *) entry_return->elems;
 321         standard->target.u.user.target_size =
 322                                 ALIGN(sizeof(struct ipt_standard_target));
 323         standard->verdict = XT_RETURN;
 324
 325         if (connman_add_entry(table, entry_return, last) < 0)
 326                 goto err;
 327
 328         return 0;
 329
 330 err:
 331         g_free(entry_head);
 332         g_free(entry_return);
 333
 334         return -ENOMEM;
 335 }
 336
 337 static struct ipt_entry *
 338 new_rule(char *target_name, struct xtables_target *xt_t,
 339                 char *match_name, struct xtables_match *xt_m)
 340 {
 341         struct ipt_entry *new_entry;
 342         size_t match_size, target_size;
 343         int is_builtin = is_builtin_target(target_name);
 344
 345         if (xt_m)
 346                 match_size = xt_m->m->u.match_size;
 347         else
 348                 match_size = 0;
 349
 350         if (xt_t)
 351                 target_size = ALIGN(xt_t->t->u.target_size);
 352         else
 353                 target_size = 0;
 354
 355         new_entry = g_try_malloc0(sizeof(struct ipt_entry) + target_size +
 356                                                                 match_size);
 357         if (new_entry == NULL)
 358                 return NULL;
 359
 360         new_entry->target_offset = sizeof(struct ipt_entry) + match_size;
 361         new_entry->next_offset = sizeof(struct ipt_entry) + target_size +
 362                                                                 match_size;
 363         if (xt_m) {
 364                 struct xt_entry_match *entry_match;
 365
 366                 entry_match = (struct xt_entry_match *)new_entry->elems;
 367                 memcpy(entry_match, xt_m->m, match_size);
 368         }
 369
 370         if (xt_t) {
 371                 struct xt_entry_target *entry_target;
 372
 373                 if (is_builtin) {
 374                         struct xt_standard_target *target;
 375
 376                         target = (struct xt_standard_target *)(xt_t->t);
 377                         strcpy(target->target.u.user.name, IPT_STANDARD_TARGET);
 378                         target->verdict = target_to_verdict(target_name);
 379                 }
 380
 381                 entry_target = ipt_get_target(new_entry);
 382                 memcpy(entry_target, xt_t->t, target_size);
 383         }
 384
 385         return new_entry;
 386 }
 387
 388 static int
 389 connman_iptables_add_rule(struct connman_iptables *table, char *chain_name,
 390                                 char *target_name, struct xtables_target *xt_t,
 391                                 char *match_name, struct xtables_match *xt_m)
 392 {
 393         GList *chain_tail;
 394         struct ipt_entry *new_entry;
 395
 396         chain_tail = find_chain_tail(table, chain_name);
 397         if (chain_tail == NULL)
 398                 return -EINVAL;
 399
 400         new_entry = new_rule(target_name, xt_t,
 401                                 match_name, xt_m);
 402         if (new_entry == NULL)
 403                 return -EINVAL;
 404
 405         return connman_add_entry(table, new_entry, chain_tail->prev);
 406 }
 407
 408 static struct ipt_replace *
 409 connman_iptables_blob(struct connman_iptables *table)
 410 {
 411         struct ipt_replace *r;
 412         GList *list;
 413         struct connman_iptables_entry *e;
 414         unsigned char *entry_index;
 415
 416         r = g_try_malloc0(sizeof(struct ipt_replace) + table->size);
 417         if (r == NULL)
 418                 return NULL;
 419
 420         memset(r, 0, sizeof(*r) + table->size);
 421
 422         r->counters = g_try_malloc0(sizeof(struct xt_counters)
 423                                 * table->num_entries);
 424         if (r->counters == NULL) {
 425                 g_free(r);
 426                 return NULL;
 427         }
 428
 429         strcpy(r->name, table->info->name);
 430         r->num_entries = table->num_entries;
 431         r->size = table->size;
 432
 433         r->num_counters = table->old_entries;
 434         r->valid_hooks  = table->info->valid_hooks;
 435
 436         memcpy(r->hook_entry, table->info->hook_entry,
 437                                 sizeof(table->info->hook_entry));
 438         memcpy(r->underflow, table->info->underflow,
 439                                 sizeof(table->info->underflow));
 440
 441         entry_index = (unsigned char *)r->entries;
 442         for (list = table->entries; list; list = list->next) {
 443                 e = list->data;
 444
 445                 memcpy(entry_index, e->entry, e->entry->next_offset);
 446                 entry_index += e->entry->next_offset;
 447         }
 448
 449         return r;
 450 }
 451
 452 static void dump_target(struct connman_iptables *table,
 453                                 struct ipt_entry *entry)
 454
 455 {
 456         struct xtables_target *xt_t;
 457         struct xt_entry_target *target;
 458
 459         target = ipt_get_target(entry);
 460
 461         if (!strcmp(target->u.user.name, IPT_STANDARD_TARGET)) {
 462                 struct xt_standard_target *t;
 463
 464                 t = (struct xt_standard_target *)target;
 465
 466                 switch (t->verdict) {
 467                 case XT_RETURN:
 468                         printf("\ttarget RETURN\n");
 469                         break;
 470
 471                 case -NF_ACCEPT - 1:
 472                         printf("\ttarget ACCEPT\n");
 473                         break;
 474
 475                 case -NF_DROP - 1:
 476                         printf("\ttarget DROP\n");
 477                         break;
 478
 479                 case -NF_QUEUE - 1:
 480                         printf("\ttarget QUEUE\n");
 481                         break;
 482
 483                 case -NF_STOP - 1:
 484                         printf("\ttarget STOP\n");
 485                         break;
 486
 487                 default:
 488                         printf("\tJUMP @%p (0x%x)\n",
 489                                 (char*)table->blob_entries->entrytable +
 490                                 t->verdict, t->verdict);
 491                         break;
 492                 }
 493
 494                 xt_t = xtables_find_target(IPT_STANDARD_TARGET,
 495                                                 XTF_LOAD_MUST_SUCCEED);
 496
 497                 if(xt_t->print != NULL)
 498                         xt_t->print(NULL, target, 1);
 499         } else {
 500                 xt_t = xtables_find_target(target->u.user.name, XTF_TRY_LOAD);
 501                 if (xt_t == NULL) {
 502                         printf("\ttarget %s\n", target->u.user.name);
 503                         return;
 504                 }
 505
 506                 if(xt_t->print != NULL) {
 507                         printf("\ttarget ");
 508                         xt_t->print(NULL, target, 1);
 509                         printf("\n");
 510                 }
 511         }
 512 }
 513
 514 static void dump_match(struct connman_iptables *table, struct ipt_entry *entry)
 515 {
 516         struct xtables_match *xt_m;
 517         struct xt_entry_match *match;
 518
 519         if (entry->elems == (unsigned char *)entry + entry->target_offset)
 520                 return;
 521
 522         match = (struct xt_entry_match *) entry->elems;
 523
 524         if (!strlen(match->u.user.name))
 525                 return;
 526
 527         xt_m = xtables_find_match(match->u.user.name, XTF_TRY_LOAD, NULL);
 528         if (xt_m == NULL)
 529                 goto out;
 530
 531         if(xt_m->print != NULL) {
 532                 printf("\tmatch ");
 533                 xt_m->print(NULL, match, 1);
 534                 printf("\n");
 535
 536                 return;
 537         }
 538
 539 out:
 540         printf("\tmatch %s\n", match->u.user.name);
 541
 542 }
 543
 544 static int connman_iptables_dump_entry(struct ipt_entry *entry,
 545                                         struct connman_iptables *table)
 546 {
 547         struct xt_entry_target *target;
 548         unsigned int offset;
 549         int builtin;
 550
 551         offset = (char *)entry - (char *)table->blob_entries->entrytable;
 552         target = ipt_get_target(entry);
 553         builtin = is_hook_entry(table, entry);
 554
 555         if (entry_to_offset(table, entry) + entry->next_offset ==
 556                                         table->blob_entries->size) {
 557                 printf("End of CHAIN 0x%x\n", offset);
 558                 return 0;
 559         }
 560
 561         if (!strcmp(target->u.user.name, IPT_ERROR_TARGET)) {
 562                 printf("USER CHAIN (%s) %p  match %p  target %p  size %d\n",
 563                         target->data, entry, entry->elems,
 564                         (char *)entry + entry->target_offset,
 565                                 entry->next_offset);
 566
 567                 return 0;
 568         } else if (builtin >= 0) {
 569                 printf("CHAIN (%s) %p  match %p  target %p  size %d\n",
 570                         hooknames[builtin], entry, entry->elems,
 571                         (char *)entry + entry->target_offset,
 572                                 entry->next_offset);
 573         } else {
 574                 printf("RULE %p  match %p  target %p  size %d\n", entry,
 575                         entry->elems,
 576                         (char *)entry + entry->target_offset,
 577                                 entry->next_offset);
 578         }
 579
 580         dump_match(table, entry);
 581         dump_target(table, entry);
 582
 583         return 0;
 584 }
 585
 586 static void connman_iptables_dump(struct connman_iptables *table)
 587 {
 588         printf("%s valid_hooks=0x%08x, num_entries=%u, size=%u\n",
 589                 table->info->name,
 590                 table->info->valid_hooks, table->info->num_entries,
 591                 table->info->size);
 592
 593         ENTRY_ITERATE(table->blob_entries->entrytable,
 594                         table->blob_entries->size,
 595                         connman_iptables_dump_entry, table);
 596
 597 }
 598
 599 static int connman_iptables_get_entries(struct connman_iptables *table)
 600 {
 601         socklen_t entry_size;
 602
 603         entry_size = sizeof(struct ipt_get_entries) + table->info->size;
 604
 605         return getsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_GET_ENTRIES,
 606                                 table->blob_entries, &entry_size);
 607 }
 608
 609 static int connman_iptables_replace(struct connman_iptables *table,
 610                                         struct ipt_replace *r)
 611 {
 612         return setsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_SET_REPLACE, r,
 613                          sizeof(*r) + r->size);
 614 }
 615
 616 static void connman_iptables_cleanup(struct connman_iptables *table)
 617 {
 618         close(table->ipt_sock);
 619         g_free(table->info);
 620         g_free(table->blob_entries);
 621         g_free(table);
 622
 623         xtables_free_opts(1);
 624 }
 625
 626 static int connman_iptables_commit(struct connman_iptables *table)
 627 {
 628         struct ipt_replace *repl;
 629
 630         repl = connman_iptables_blob(table);
 631
 632         return connman_iptables_replace(table, repl);
 633 }
 634
 635 static int add_entry(struct ipt_entry *entry, struct connman_iptables *table)
 636 {
 637         return connman_add_entry(table, entry, NULL);
 638 }
 639
 640 static struct connman_iptables *connman_iptables_init(const char *table_name)
 641 {
 642         struct connman_iptables *table;
 643         socklen_t s;
 644
 645         table =  g_try_new0(struct connman_iptables, 1);
 646         if (table == NULL)
 647                 return NULL;
 648
 649         table->info =  g_try_new0(struct ipt_getinfo, 1);
 650         if (table->info == NULL)
 651                 goto err;
 652
 653         table->ipt_sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
 654         if (table->ipt_sock < 0)
 655                 goto err;
 656
 657         s = sizeof(*table->info);
 658         strcpy(table->info->name, table_name);
 659         if (getsockopt(table->ipt_sock, IPPROTO_IP, IPT_SO_GET_INFO,
 660                                                 table->info, &s) < 0)
 661                 goto err;
 662
 663         table->blob_entries = g_try_malloc0(sizeof(struct ipt_get_entries) +
 664                                                 table->info->size);
 665         if (table->blob_entries == NULL)
 666                 goto err;
 667
 668         strcpy(table->blob_entries->name, table_name);
 669         table->blob_entries->size = table->info->size;
 670
 671         if (connman_iptables_get_entries(table) < 0)
 672                 goto err;
 673
 674         table->num_entries = 0;
 675         table->old_entries = table->info->num_entries;
 676         table->size = 0;
 677
 678         ENTRY_ITERATE(table->blob_entries->entrytable,
 679                         table->blob_entries->size,
 680                                 add_entry, table);
 681
 682
 683         return table;
 684
 685 err:
 686
 687         connman_iptables_cleanup(table);
 688
 689         return NULL;
 690 }
 691
 692
 693 static struct option connman_iptables_opts[] = {
 694         {.name = "append",        .has_arg = 1, .val = 'A'},
 695         {.name = "list",          .has_arg = 2, .val = 'L'},
 696         {.name = "new-chain",     .has_arg = 1, .val = 'N'},
 697         {.name = "in-interface",  .has_arg = 1, .val = 'i'},
 698         {.name = "jump",          .has_arg = 1, .val = 'j'},
 699         {.name = "match",         .has_arg = 1, .val = 'm'},
 700         {.name = "out-interface", .has_arg = 1, .val = 'o'},
 701         {.name = "table",         .has_arg = 1, .val = 't'},
 702         {NULL},
 703 };
 704
 705 struct xtables_globals connman_iptables_globals = {
 706         .option_offset = 0,
 707         .opts = connman_iptables_opts,
 708         .orig_opts = connman_iptables_opts,
 709 };
 710
 711 int main(int argc, char *argv[])
 712 {
 713         struct connman_iptables *table;
 714         struct xtables_match *xt_m;
 715         struct xtables_target *xt_t;
 716         char *table_name, *chain, *new_chain, *match_name, *target_name;
 717         int c;
 718         size_t size;
 719         gboolean dump, invert;
 720
 721         xtables_init_all(&connman_iptables_globals, NFPROTO_IPV4);
 722
 723         dump = FALSE;
 724         invert = FALSE;
 725         table_name = chain = new_chain = match_name = target_name = NULL;
 726         table = NULL;
 727         xt_m = NULL;
 728         xt_t = NULL;
 729
 730         while ((c = getopt_long(argc, argv,
 731            "-A:L::N:j:i:m:o:t:", connman_iptables_globals.opts, NULL)) != -1) {
 732                 switch (c) {
 733                 case 'A':
 734                         chain = optarg;
 735                         break;
 736
 737                 case 'L':
 738                         dump = TRUE;
 739                         break;
 740
 741                 case 'N':
 742                         new_chain = optarg;
 743                         break;
 744
 745                 case 'j':
 746                         target_name = optarg;
 747                         xt_t = xtables_find_target(target_name, XTF_TRY_LOAD);
 748
 749                         if (xt_t == NULL)
 750                                 break;
 751
 752                         size = ALIGN(sizeof(struct ipt_entry_target)) + xt_t->size;
 753
 754                         xt_t->t = g_try_malloc0(size);
 755                         if (xt_t->t == NULL)
 756                                 goto out;
 757                         xt_t->t->u.target_size = size;
 758                         strcpy(xt_t->t->u.user.name, target_name);
 759                         xt_t->t->u.user.revision = xt_t->revision;
 760                         if (xt_t->init != NULL)
 761                                 xt_t->init(xt_t->t);
 762                         connman_iptables_globals.opts =
 763                                 xtables_merge_options(connman_iptables_globals.opts,
 764                                                      xt_t->extra_opts,
 765                                                      &xt_t->option_offset);
 766                         if (connman_iptables_globals.opts == NULL)
 767                                 goto out;
 768
 769                         break;
 770
 771                 case 'i':
 772                         break;
 773
 774                 case 'm':
 775                         match_name = optarg;
 776
 777                         xt_m = xtables_find_match(optarg, XTF_LOAD_MUST_SUCCEED, NULL);
 778                         size = ALIGN(sizeof(struct ipt_entry_match)) + xt_m->size;
 779                         xt_m->m = g_try_malloc0(size);
 780                         if (xt_m == NULL)
 781                                 goto out;
 782                         xt_m->m->u.match_size = size;
 783                         strcpy(xt_m->m->u.user.name, xt_m->name);
 784                         xt_m->m->u.user.revision = xt_m->revision;
 785                         if (xt_m->init != NULL)
 786                                 xt_m->init(xt_m->m);
 787                         if (xt_m != xt_m->next) {
 788                                 connman_iptables_globals.opts =
 789                                         xtables_merge_options(connman_iptables_globals.opts,
 790                                                 xt_m->extra_opts,
 791                                                 &xt_m->option_offset);
 792                                 if (connman_iptables_globals.opts == NULL)
 793                                         goto out;
 794                         }
 795
 796                         break;
 797
 798                 case 'o':
 799                         break;
 800
 801                 case 't':
 802                         table_name = optarg;
 803                         break;
 804
 805                 case 1:
 806                         if (optarg[0] == '!' && optarg[1] == '\0') {
 807                                 if (invert)
 808                                         printf("Consecutive ! not allowed\n");
 809
 810                                 invert = TRUE;
 811                                 optarg[0] = '\0';
 812                                 continue;
 813                         }
 814
 815                         printf("Invalid option\n");
 816
 817                         return -1;
 818
 819                 default:
 820                         if (xt_t == NULL || xt_t->parse == NULL ||
 821                             !xt_t->parse(c - xt_t->option_offset, argv, invert,
 822                                         &xt_t->tflags, NULL, &xt_t->t)) {
 823                                 if (xt_m == NULL || xt_m->parse == NULL)
 824                                         break;
 825
 826                                 xt_m->parse(c - xt_m->option_offset, argv,
 827                                         invert, &xt_m->mflags, NULL, &xt_m->m);
 828                         }
 829
 830                         break;
 831                 }
 832         }
 833
 834         if (table_name == NULL)
 835                 table_name = "filter";
 836
 837         table = connman_iptables_init(table_name);
 838         if (table == NULL)
 839                 return -1;
 840
 841         if (dump) {
 842                 connman_iptables_dump(table);
 843
 844                 return 0;
 845         }
 846
 847         if (chain && new_chain)
 848                 return -1;
 849
 850         if (new_chain) {
 851                 printf("New chain %s\n", new_chain);
 852
 853                 connman_iptables_add_chain(table, new_chain);
 854
 855                 goto commit;
 856         }
 857
 858         if (chain) {
 859                 if (target_name == NULL)
 860                         return -1;
 861
 862                 printf("Adding %s to %s (match %s)\n", target_name, chain, match_name);
 863
 864                 connman_iptables_add_rule(table, chain, target_name, xt_t,
 865                                         match_name, xt_m);
 866
 867                 goto commit;
 868         }
 869
 870 commit:
 871
 872         connman_iptables_commit(table);
 873
 874 out:
 875         connman_iptables_cleanup(table);
 876
 877         if (xt_t)
 878                 g_free(xt_t->t);
 879
 880         if (xt_m)
 881                 g_free(xt_m->m);
 882
 883         return 0;
 884 }