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authorJan Engelhardt <jengelh@medozas.de>2011-06-07 14:02:37 +0200
committerJan Engelhardt <jengelh@medozas.de>2011-06-07 14:02:37 +0200
commit033e25a3ad215ee3f5a07f0a3315f74c4abfaced (patch)
tree09dd915a800c5276663d3688768e9cb960538515 /ip6tables.c
parent5c8f5b60aa8e24da0bd25824f0f85bf7a4a39ea7 (diff)
src: move all iptables pieces into a separate directory
(Unclutter top-level dir) Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'ip6tables.c')
-rw-r--r--ip6tables.c1967
1 files changed, 0 insertions, 1967 deletions
diff --git a/ip6tables.c b/ip6tables.c
deleted file mode 100644
index 4df73b8d..00000000
--- a/ip6tables.c
+++ /dev/null
@@ -1,1967 +0,0 @@
-/* Code to take an ip6tables-style command line and do it. */
-
-/*
- * Author: Paul.Russell@rustcorp.com.au and mneuling@radlogic.com.au
- *
- * (C) 2000-2002 by the netfilter coreteam <coreteam@netfilter.org>:
- * Paul 'Rusty' Russell <rusty@rustcorp.com.au>
- * Marc Boucher <marc+nf@mbsi.ca>
- * James Morris <jmorris@intercode.com.au>
- * Harald Welte <laforge@gnumonks.org>
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <getopt.h>
-#include <string.h>
-#include <netdb.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <stdarg.h>
-#include <stdbool.h>
-#include <limits.h>
-#include <ip6tables.h>
-#include <xtables.h>
-#include <arpa/inet.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include "ip6tables-multi.h"
-#include "xshared.h"
-
-#ifndef TRUE
-#define TRUE 1
-#endif
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#define FMT_NUMERIC 0x0001
-#define FMT_NOCOUNTS 0x0002
-#define FMT_KILOMEGAGIGA 0x0004
-#define FMT_OPTIONS 0x0008
-#define FMT_NOTABLE 0x0010
-#define FMT_NOTARGET 0x0020
-#define FMT_VIA 0x0040
-#define FMT_NONEWLINE 0x0080
-#define FMT_LINENUMBERS 0x0100
-
-#define FMT_PRINT_RULE (FMT_NOCOUNTS | FMT_OPTIONS | FMT_VIA \
- | FMT_NUMERIC | FMT_NOTABLE)
-#define FMT(tab,notab) ((format) & FMT_NOTABLE ? (notab) : (tab))
-
-
-#define CMD_NONE 0x0000U
-#define CMD_INSERT 0x0001U
-#define CMD_DELETE 0x0002U
-#define CMD_DELETE_NUM 0x0004U
-#define CMD_REPLACE 0x0008U
-#define CMD_APPEND 0x0010U
-#define CMD_LIST 0x0020U
-#define CMD_FLUSH 0x0040U
-#define CMD_ZERO 0x0080U
-#define CMD_NEW_CHAIN 0x0100U
-#define CMD_DELETE_CHAIN 0x0200U
-#define CMD_SET_POLICY 0x0400U
-#define CMD_RENAME_CHAIN 0x0800U
-#define CMD_LIST_RULES 0x1000U
-#define CMD_ZERO_NUM 0x2000U
-#define CMD_CHECK 0x4000U
-#define NUMBER_OF_CMD 16
-static const char cmdflags[] = { 'I', 'D', 'D', 'R', 'A', 'L', 'F', 'Z',
- 'Z', 'N', 'X', 'P', 'E', 'S', 'C' };
-
-#define NUMBER_OF_OPT ARRAY_SIZE(optflags)
-static const char optflags[]
-= { 'n', 's', 'd', 'p', 'j', 'v', 'x', 'i', 'o', '0', 'c'};
-
-static struct option original_opts[] = {
- {.name = "append", .has_arg = 1, .val = 'A'},
- {.name = "delete", .has_arg = 1, .val = 'D'},
- {.name = "check" , .has_arg = 1, .val = 'C'},
- {.name = "insert", .has_arg = 1, .val = 'I'},
- {.name = "replace", .has_arg = 1, .val = 'R'},
- {.name = "list", .has_arg = 2, .val = 'L'},
- {.name = "list-rules", .has_arg = 2, .val = 'S'},
- {.name = "flush", .has_arg = 2, .val = 'F'},
- {.name = "zero", .has_arg = 2, .val = 'Z'},
- {.name = "new-chain", .has_arg = 1, .val = 'N'},
- {.name = "delete-chain", .has_arg = 2, .val = 'X'},
- {.name = "rename-chain", .has_arg = 1, .val = 'E'},
- {.name = "policy", .has_arg = 1, .val = 'P'},
- {.name = "source", .has_arg = 1, .val = 's'},
- {.name = "destination", .has_arg = 1, .val = 'd'},
- {.name = "src", .has_arg = 1, .val = 's'}, /* synonym */
- {.name = "dst", .has_arg = 1, .val = 'd'}, /* synonym */
- {.name = "protocol", .has_arg = 1, .val = 'p'},
- {.name = "in-interface", .has_arg = 1, .val = 'i'},
- {.name = "jump", .has_arg = 1, .val = 'j'},
- {.name = "table", .has_arg = 1, .val = 't'},
- {.name = "match", .has_arg = 1, .val = 'm'},
- {.name = "numeric", .has_arg = 0, .val = 'n'},
- {.name = "out-interface", .has_arg = 1, .val = 'o'},
- {.name = "verbose", .has_arg = 0, .val = 'v'},
- {.name = "exact", .has_arg = 0, .val = 'x'},
- {.name = "version", .has_arg = 0, .val = 'V'},
- {.name = "help", .has_arg = 2, .val = 'h'},
- {.name = "line-numbers", .has_arg = 0, .val = '0'},
- {.name = "modprobe", .has_arg = 1, .val = 'M'},
- {.name = "set-counters", .has_arg = 1, .val = 'c'},
- {.name = "goto", .has_arg = 1, .val = 'g'},
- {.name = "ipv4", .has_arg = 0, .val = '4'},
- {.name = "ipv6", .has_arg = 0, .val = '6'},
- {NULL},
-};
-
-void ip6tables_exit_error(enum xtables_exittype status, const char *msg, ...) __attribute__((noreturn, format(printf,2,3)));
-struct xtables_globals ip6tables_globals = {
- .option_offset = 0,
- .program_version = IPTABLES_VERSION,
- .orig_opts = original_opts,
- .exit_err = ip6tables_exit_error,
-};
-
-/* Table of legal combinations of commands and options. If any of the
- * given commands make an option legal, that option is legal (applies to
- * CMD_LIST and CMD_ZERO only).
- * Key:
- * + compulsory
- * x illegal
- * optional
- */
-
-static const char commands_v_options[NUMBER_OF_CMD][NUMBER_OF_OPT] =
-/* Well, it's better than "Re: Linux vs FreeBSD" */
-{
- /* -n -s -d -p -j -v -x -i -o --line -c */
-/*INSERT*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x',' '},
-/*DELETE*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x','x'},
-/*DELETE_NUM*/{'x','x','x','x','x',' ','x','x','x','x','x'},
-/*REPLACE*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x',' '},
-/*APPEND*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x',' '},
-/*LIST*/ {' ','x','x','x','x',' ',' ','x','x',' ','x'},
-/*FLUSH*/ {'x','x','x','x','x',' ','x','x','x','x','x'},
-/*ZERO*/ {'x','x','x','x','x',' ','x','x','x','x','x'},
-/*ZERO_NUM*/ {'x','x','x','x','x',' ','x','x','x','x','x'},
-/*NEW_CHAIN*/ {'x','x','x','x','x',' ','x','x','x','x','x'},
-/*DEL_CHAIN*/ {'x','x','x','x','x',' ','x','x','x','x','x'},
-/*SET_POLICY*/{'x','x','x','x','x',' ','x','x','x','x',' '},
-/*RENAME*/ {'x','x','x','x','x',' ','x','x','x','x','x'},
-/*LIST_RULES*/{'x','x','x','x','x',' ','x','x','x','x','x'},
-/*CHECK*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x','x'},
-};
-
-static const unsigned int inverse_for_options[NUMBER_OF_OPT] =
-{
-/* -n */ 0,
-/* -s */ IP6T_INV_SRCIP,
-/* -d */ IP6T_INV_DSTIP,
-/* -p */ IP6T_INV_PROTO,
-/* -j */ 0,
-/* -v */ 0,
-/* -x */ 0,
-/* -i */ IP6T_INV_VIA_IN,
-/* -o */ IP6T_INV_VIA_OUT,
-/*--line*/ 0,
-/* -c */ 0,
-};
-
-#define opts ip6tables_globals.opts
-#define prog_name ip6tables_globals.program_name
-#define prog_vers ip6tables_globals.program_version
-/* A few hardcoded protocols for 'all' and in case the user has no
- /etc/protocols */
-struct pprot {
- const char *name;
- uint8_t num;
-};
-
-static void __attribute__((noreturn))
-exit_tryhelp(int status)
-{
- if (line != -1)
- fprintf(stderr, "Error occurred at line: %d\n", line);
- fprintf(stderr, "Try `%s -h' or '%s --help' for more information.\n",
- prog_name, prog_name);
- xtables_free_opts(1);
- exit(status);
-}
-
-static void
-exit_printhelp(const struct xtables_rule_match *matches)
-{
- printf("%s v%s\n\n"
-"Usage: %s -[ACD] chain rule-specification [options]\n"
-" %s -I chain [rulenum] rule-specification [options]\n"
-" %s -R chain rulenum rule-specification [options]\n"
-" %s -D chain rulenum [options]\n"
-" %s -[LS] [chain [rulenum]] [options]\n"
-" %s -[FZ] [chain] [options]\n"
-" %s -[NX] chain\n"
-" %s -E old-chain-name new-chain-name\n"
-" %s -P chain target [options]\n"
-" %s -h (print this help information)\n\n",
- prog_name, prog_vers, prog_name, prog_name,
- prog_name, prog_name, prog_name, prog_name,
- prog_name, prog_name, prog_name, prog_name);
-
- printf(
-"Commands:\n"
-"Either long or short options are allowed.\n"
-" --append -A chain Append to chain\n"
-" --check -C chain Check for the existence of a rule\n"
-" --delete -D chain Delete matching rule from chain\n"
-" --delete -D chain rulenum\n"
-" Delete rule rulenum (1 = first) from chain\n"
-" --insert -I chain [rulenum]\n"
-" Insert in chain as rulenum (default 1=first)\n"
-" --replace -R chain rulenum\n"
-" Replace rule rulenum (1 = first) in chain\n"
-" --list -L [chain [rulenum]]\n"
-" List the rules in a chain or all chains\n"
-" --list-rules -S [chain [rulenum]]\n"
-" Print the rules in a chain or all chains\n"
-" --flush -F [chain] Delete all rules in chain or all chains\n"
-" --zero -Z [chain [rulenum]]\n"
-" Zero counters in chain or all chains\n"
-" --new -N chain Create a new user-defined chain\n"
-" --delete-chain\n"
-" -X [chain] Delete a user-defined chain\n"
-" --policy -P chain target\n"
-" Change policy on chain to target\n"
-" --rename-chain\n"
-" -E old-chain new-chain\n"
-" Change chain name, (moving any references)\n"
-
-"Options:\n"
-" --ipv4 -4 Error (line is ignored by ip6tables-restore)\n"
-" --ipv6 -6 Nothing (line is ignored by iptables-restore)\n"
-"[!] --proto -p proto protocol: by number or name, eg. `tcp'\n"
-"[!] --source -s address[/mask][,...]\n"
-" source specification\n"
-"[!] --destination -d address[/mask][,...]\n"
-" destination specification\n"
-"[!] --in-interface -i input name[+]\n"
-" network interface name ([+] for wildcard)\n"
-" --jump -j target\n"
-" target for rule (may load target extension)\n"
-#ifdef IP6T_F_GOTO
-" --goto -g chain\n"
-" jump to chain with no return\n"
-#endif
-" --match -m match\n"
-" extended match (may load extension)\n"
-" --numeric -n numeric output of addresses and ports\n"
-"[!] --out-interface -o output name[+]\n"
-" network interface name ([+] for wildcard)\n"
-" --table -t table table to manipulate (default: `filter')\n"
-" --verbose -v verbose mode\n"
-" --line-numbers print line numbers when listing\n"
-" --exact -x expand numbers (display exact values)\n"
-/*"[!] --fragment -f match second or further fragments only\n"*/
-" --modprobe=<command> try to insert modules using this command\n"
-" --set-counters PKTS BYTES set the counter during insert/append\n"
-"[!] --version -V print package version.\n");
-
- print_extension_helps(xtables_targets, matches);
- exit(0);
-}
-
-void
-ip6tables_exit_error(enum xtables_exittype status, const char *msg, ...)
-{
- va_list args;
-
- va_start(args, msg);
- fprintf(stderr, "%s v%s: ", prog_name, prog_vers);
- vfprintf(stderr, msg, args);
- va_end(args);
- fprintf(stderr, "\n");
- if (status == PARAMETER_PROBLEM)
- exit_tryhelp(status);
- if (status == VERSION_PROBLEM)
- fprintf(stderr,
- "Perhaps ip6tables or your kernel needs to be upgraded.\n");
- /* On error paths, make sure that we don't leak memory */
- xtables_free_opts(1);
- exit(status);
-}
-
-static void
-generic_opt_check(int command, int options)
-{
- int i, j, legal = 0;
-
- /* Check that commands are valid with options. Complicated by the
- * fact that if an option is legal with *any* command given, it is
- * legal overall (ie. -z and -l).
- */
- for (i = 0; i < NUMBER_OF_OPT; i++) {
- legal = 0; /* -1 => illegal, 1 => legal, 0 => undecided. */
-
- for (j = 0; j < NUMBER_OF_CMD; j++) {
- if (!(command & (1<<j)))
- continue;
-
- if (!(options & (1<<i))) {
- if (commands_v_options[j][i] == '+')
- xtables_error(PARAMETER_PROBLEM,
- "You need to supply the `-%c' "
- "option for this command\n",
- optflags[i]);
- } else {
- if (commands_v_options[j][i] != 'x')
- legal = 1;
- else if (legal == 0)
- legal = -1;
- }
- }
- if (legal == -1)
- xtables_error(PARAMETER_PROBLEM,
- "Illegal option `-%c' with this command\n",
- optflags[i]);
- }
-}
-
-static char
-opt2char(int option)
-{
- const char *ptr;
- for (ptr = optflags; option > 1; option >>= 1, ptr++);
-
- return *ptr;
-}
-
-static char
-cmd2char(int option)
-{
- const char *ptr;
- for (ptr = cmdflags; option > 1; option >>= 1, ptr++);
-
- return *ptr;
-}
-
-static void
-add_command(unsigned int *cmd, const int newcmd, const int othercmds,
- int invert)
-{
- if (invert)
- xtables_error(PARAMETER_PROBLEM, "unexpected '!' flag");
- if (*cmd & (~othercmds))
- xtables_error(PARAMETER_PROBLEM, "Cannot use -%c with -%c\n",
- cmd2char(newcmd), cmd2char(*cmd & (~othercmds)));
- *cmd |= newcmd;
-}
-
-/*
- * All functions starting with "parse" should succeed, otherwise
- * the program fails.
- * Most routines return pointers to static data that may change
- * between calls to the same or other routines with a few exceptions:
- * "host_to_addr", "parse_hostnetwork", and "parse_hostnetworkmask"
- * return global static data.
-*/
-
-/* These are invalid numbers as upper layer protocol */
-static int is_exthdr(uint16_t proto)
-{
- return (proto == IPPROTO_ROUTING ||
- proto == IPPROTO_FRAGMENT ||
- proto == IPPROTO_AH ||
- proto == IPPROTO_DSTOPTS);
-}
-
-/* Can't be zero. */
-static int
-parse_rulenumber(const char *rule)
-{
- unsigned int rulenum;
-
- if (!xtables_strtoui(rule, NULL, &rulenum, 1, INT_MAX))
- xtables_error(PARAMETER_PROBLEM,
- "Invalid rule number `%s'", rule);
-
- return rulenum;
-}
-
-static const char *
-parse_target(const char *targetname)
-{
- const char *ptr;
-
- if (strlen(targetname) < 1)
- xtables_error(PARAMETER_PROBLEM,
- "Invalid target name (too short)");
-
- if (strlen(targetname) >= XT_EXTENSION_MAXNAMELEN)
- xtables_error(PARAMETER_PROBLEM,
- "Invalid target name `%s' (%u chars max)",
- targetname, XT_EXTENSION_MAXNAMELEN - 1);
-
- for (ptr = targetname; *ptr; ptr++)
- if (isspace(*ptr))
- xtables_error(PARAMETER_PROBLEM,
- "Invalid target name `%s'", targetname);
- return targetname;
-}
-
-static void
-set_option(unsigned int *options, unsigned int option, uint8_t *invflg,
- int invert)
-{
- if (*options & option)
- xtables_error(PARAMETER_PROBLEM, "multiple -%c flags not allowed",
- opt2char(option));
- *options |= option;
-
- if (invert) {
- unsigned int i;
- for (i = 0; 1 << i != option; i++);
-
- if (!inverse_for_options[i])
- xtables_error(PARAMETER_PROBLEM,
- "cannot have ! before -%c",
- opt2char(option));
- *invflg |= inverse_for_options[i];
- }
-}
-
-static void
-print_num(uint64_t number, unsigned int format)
-{
- if (format & FMT_KILOMEGAGIGA) {
- if (number > 99999) {
- number = (number + 500) / 1000;
- if (number > 9999) {
- number = (number + 500) / 1000;
- if (number > 9999) {
- number = (number + 500) / 1000;
- if (number > 9999) {
- number = (number + 500) / 1000;
- printf(FMT("%4lluT ","%lluT "), (unsigned long long)number);
- }
- else printf(FMT("%4lluG ","%lluG "), (unsigned long long)number);
- }
- else printf(FMT("%4lluM ","%lluM "), (unsigned long long)number);
- } else
- printf(FMT("%4lluK ","%lluK "), (unsigned long long)number);
- } else
- printf(FMT("%5llu ","%llu "), (unsigned long long)number);
- } else
- printf(FMT("%8llu ","%llu "), (unsigned long long)number);
-}
-
-
-static void
-print_header(unsigned int format, const char *chain, struct ip6tc_handle *handle)
-{
- struct ip6t_counters counters;
- const char *pol = ip6tc_get_policy(chain, &counters, handle);
- printf("Chain %s", chain);
- if (pol) {
- printf(" (policy %s", pol);
- if (!(format & FMT_NOCOUNTS)) {
- fputc(' ', stdout);
- print_num(counters.pcnt, (format|FMT_NOTABLE));
- fputs("packets, ", stdout);
- print_num(counters.bcnt, (format|FMT_NOTABLE));
- fputs("bytes", stdout);
- }
- printf(")\n");
- } else {
- unsigned int refs;
- if (!ip6tc_get_references(&refs, chain, handle))
- printf(" (ERROR obtaining refs)\n");
- else
- printf(" (%u references)\n", refs);
- }
-
- if (format & FMT_LINENUMBERS)
- printf(FMT("%-4s ", "%s "), "num");
- if (!(format & FMT_NOCOUNTS)) {
- if (format & FMT_KILOMEGAGIGA) {
- printf(FMT("%5s ","%s "), "pkts");
- printf(FMT("%5s ","%s "), "bytes");
- } else {
- printf(FMT("%8s ","%s "), "pkts");
- printf(FMT("%10s ","%s "), "bytes");
- }
- }
- if (!(format & FMT_NOTARGET))
- printf(FMT("%-9s ","%s "), "target");
- fputs(" prot ", stdout);
- if (format & FMT_OPTIONS)
- fputs("opt", stdout);
- if (format & FMT_VIA) {
- printf(FMT(" %-6s ","%s "), "in");
- printf(FMT("%-6s ","%s "), "out");
- }
- printf(FMT(" %-19s ","%s "), "source");
- printf(FMT(" %-19s "," %s "), "destination");
- printf("\n");
-}
-
-
-static int
-print_match(const struct ip6t_entry_match *m,
- const struct ip6t_ip6 *ip,
- int numeric)
-{
- const struct xtables_match *match =
- xtables_find_match(m->u.user.name, XTF_TRY_LOAD, NULL);
-
- if (match) {
- if (match->print)
- match->print(ip, m, numeric);
- else
- printf("%s ", match->name);
- } else {
- if (m->u.user.name[0])
- printf("UNKNOWN match `%s' ", m->u.user.name);
- }
- /* Don't stop iterating. */
- return 0;
-}
-
-/* e is called `fw' here for historical reasons */
-static void
-print_firewall(const struct ip6t_entry *fw,
- const char *targname,
- unsigned int num,
- unsigned int format,
- struct ip6tc_handle *const handle)
-{
- const struct xtables_target *target = NULL;
- const struct ip6t_entry_target *t;
- char buf[BUFSIZ];
-
- if (!ip6tc_is_chain(targname, handle))
- target = xtables_find_target(targname, XTF_TRY_LOAD);
- else
- target = xtables_find_target(IP6T_STANDARD_TARGET,
- XTF_LOAD_MUST_SUCCEED);
-
- t = ip6t_get_target((struct ip6t_entry *)fw);
-
- if (format & FMT_LINENUMBERS)
- printf(FMT("%-4u ", "%u "), num);
-
- if (!(format & FMT_NOCOUNTS)) {
- print_num(fw->counters.pcnt, format);
- print_num(fw->counters.bcnt, format);
- }
-
- if (!(format & FMT_NOTARGET))
- printf(FMT("%-9s ", "%s "), targname);
-
- fputc(fw->ipv6.invflags & IP6T_INV_PROTO ? '!' : ' ', stdout);
- {
- const char *pname = proto_to_name(fw->ipv6.proto, format&FMT_NUMERIC);
- if (pname)
- printf(FMT("%-5s", "%s "), pname);
- else
- printf(FMT("%-5hu", "%hu "), fw->ipv6.proto);
- }
-
- if (format & FMT_OPTIONS) {
- if (format & FMT_NOTABLE)
- fputs("opt ", stdout);
- fputc(' ', stdout); /* Invert flag of FRAG */
- fputc(' ', stdout); /* -f */
- fputc(' ', stdout);
- }
-
- if (format & FMT_VIA) {
- char iface[IFNAMSIZ+2];
-
- if (fw->ipv6.invflags & IP6T_INV_VIA_IN) {
- iface[0] = '!';
- iface[1] = '\0';
- }
- else iface[0] = '\0';
-
- if (fw->ipv6.iniface[0] != '\0') {
- strcat(iface, fw->ipv6.iniface);
- }
- else if (format & FMT_NUMERIC) strcat(iface, "*");
- else strcat(iface, "any");
- printf(FMT(" %-6s ","in %s "), iface);
-
- if (fw->ipv6.invflags & IP6T_INV_VIA_OUT) {
- iface[0] = '!';
- iface[1] = '\0';
- }
- else iface[0] = '\0';
-
- if (fw->ipv6.outiface[0] != '\0') {
- strcat(iface, fw->ipv6.outiface);
- }
- else if (format & FMT_NUMERIC) strcat(iface, "*");
- else strcat(iface, "any");
- printf(FMT("%-6s ","out %s "), iface);
- }
-
- fputc(fw->ipv6.invflags & IP6T_INV_SRCIP ? '!' : ' ', stdout);
- if (!memcmp(&fw->ipv6.smsk, &in6addr_any, sizeof in6addr_any)
- && !(format & FMT_NUMERIC))
- printf(FMT("%-19s ","%s "), "anywhere");
- else {
- if (format & FMT_NUMERIC)
- strcpy(buf, xtables_ip6addr_to_numeric(&fw->ipv6.src));
- else
- strcpy(buf, xtables_ip6addr_to_anyname(&fw->ipv6.src));
- strcat(buf, xtables_ip6mask_to_numeric(&fw->ipv6.smsk));
- printf(FMT("%-19s ","%s "), buf);
- }
-
- fputc(fw->ipv6.invflags & IP6T_INV_DSTIP ? '!' : ' ', stdout);
- if (!memcmp(&fw->ipv6.dmsk, &in6addr_any, sizeof in6addr_any)
- && !(format & FMT_NUMERIC))
- printf(FMT("%-19s ","-> %s"), "anywhere");
- else {
- if (format & FMT_NUMERIC)
- strcpy(buf, xtables_ip6addr_to_numeric(&fw->ipv6.dst));
- else
- strcpy(buf, xtables_ip6addr_to_anyname(&fw->ipv6.dst));
- strcat(buf, xtables_ip6mask_to_numeric(&fw->ipv6.dmsk));
- printf(FMT("%-19s ","-> %s"), buf);
- }
-
- if (format & FMT_NOTABLE)
- fputs(" ", stdout);
-
-#ifdef IP6T_F_GOTO
- if(fw->ipv6.flags & IP6T_F_GOTO)
- printf("[goto] ");
-#endif
-
- IP6T_MATCH_ITERATE(fw, print_match, &fw->ipv6, format & FMT_NUMERIC);
-
- if (target) {
- if (target->print)
- /* Print the target information. */
- target->print(&fw->ipv6, t, format & FMT_NUMERIC);
- } else if (t->u.target_size != sizeof(*t))
- printf("[%u bytes of unknown target data] ",
- (unsigned int)(t->u.target_size - sizeof(*t)));
-
- if (!(format & FMT_NONEWLINE))
- fputc('\n', stdout);
-}
-
-static void
-print_firewall_line(const struct ip6t_entry *fw,
- struct ip6tc_handle *const h)
-{
- struct ip6t_entry_target *t;
-
- t = ip6t_get_target((struct ip6t_entry *)fw);
- print_firewall(fw, t->u.user.name, 0, FMT_PRINT_RULE, h);
-}
-
-static int
-append_entry(const ip6t_chainlabel chain,
- struct ip6t_entry *fw,
- unsigned int nsaddrs,
- const struct in6_addr saddrs[],
- const struct in6_addr smasks[],
- unsigned int ndaddrs,
- const struct in6_addr daddrs[],
- const struct in6_addr dmasks[],
- int verbose,
- struct ip6tc_handle *handle)
-{
- unsigned int i, j;
- int ret = 1;
-
- for (i = 0; i < nsaddrs; i++) {
- fw->ipv6.src = saddrs[i];
- fw->ipv6.smsk = smasks[i];
- for (j = 0; j < ndaddrs; j++) {
- fw->ipv6.dst = daddrs[j];
- fw->ipv6.dmsk = dmasks[j];
- if (verbose)
- print_firewall_line(fw, handle);
- ret &= ip6tc_append_entry(chain, fw, handle);
- }
- }
-
- return ret;
-}
-
-static int
-replace_entry(const ip6t_chainlabel chain,
- struct ip6t_entry *fw,
- unsigned int rulenum,
- const struct in6_addr *saddr, const struct in6_addr *smask,
- const struct in6_addr *daddr, const struct in6_addr *dmask,
- int verbose,
- struct ip6tc_handle *handle)
-{
- fw->ipv6.src = *saddr;
- fw->ipv6.dst = *daddr;
- fw->ipv6.smsk = *smask;
- fw->ipv6.dmsk = *dmask;
-
- if (verbose)
- print_firewall_line(fw, handle);
- return ip6tc_replace_entry(chain, fw, rulenum, handle);
-}
-
-static int
-insert_entry(const ip6t_chainlabel chain,
- struct ip6t_entry *fw,
- unsigned int rulenum,
- unsigned int nsaddrs,
- const struct in6_addr saddrs[],
- const struct in6_addr smasks[],
- unsigned int ndaddrs,
- const struct in6_addr daddrs[],
- const struct in6_addr dmasks[],
- int verbose,
- struct ip6tc_handle *handle)
-{
- unsigned int i, j;
- int ret = 1;
-
- for (i = 0; i < nsaddrs; i++) {
- fw->ipv6.src = saddrs[i];
- fw->ipv6.smsk = smasks[i];
- for (j = 0; j < ndaddrs; j++) {
- fw->ipv6.dst = daddrs[j];
- fw->ipv6.dmsk = dmasks[j];
- if (verbose)
- print_firewall_line(fw, handle);
- ret &= ip6tc_insert_entry(chain, fw, rulenum, handle);
- }
- }
-
- return ret;
-}
-
-static unsigned char *
-make_delete_mask(const struct xtables_rule_match *matches,
- const struct xtables_target *target)
-{
- /* Establish mask for comparison */
- unsigned int size;
- const struct xtables_rule_match *matchp;
- unsigned char *mask, *mptr;
-
- size = sizeof(struct ip6t_entry);
- for (matchp = matches; matchp; matchp = matchp->next)
- size += XT_ALIGN(sizeof(struct ip6t_entry_match)) + matchp->match->size;
-
- mask = xtables_calloc(1, size
- + XT_ALIGN(sizeof(struct ip6t_entry_target))
- + target->size);
-
- memset(mask, 0xFF, sizeof(struct ip6t_entry));
- mptr = mask + sizeof(struct ip6t_entry);
-
- for (matchp = matches; matchp; matchp = matchp->next) {
- memset(mptr, 0xFF,
- XT_ALIGN(sizeof(struct ip6t_entry_match))
- + matchp->match->userspacesize);
- mptr += XT_ALIGN(sizeof(struct ip6t_entry_match)) + matchp->match->size;
- }
-
- memset(mptr, 0xFF,
- XT_ALIGN(sizeof(struct ip6t_entry_target))
- + target->userspacesize);
-
- return mask;
-}
-
-static int
-delete_entry(const ip6t_chainlabel chain,
- struct ip6t_entry *fw,
- unsigned int nsaddrs,
- const struct in6_addr saddrs[],
- const struct in6_addr smasks[],
- unsigned int ndaddrs,
- const struct in6_addr daddrs[],
- const struct in6_addr dmasks[],
- int verbose,
- struct ip6tc_handle *handle,
- struct xtables_rule_match *matches,
- const struct xtables_target *target)
-{
- unsigned int i, j;
- int ret = 1;
- unsigned char *mask;
-
- mask = make_delete_mask(matches, target);
- for (i = 0; i < nsaddrs; i++) {
- fw->ipv6.src = saddrs[i];
- fw->ipv6.smsk = smasks[i];
- for (j = 0; j < ndaddrs; j++) {
- fw->ipv6.dst = daddrs[j];
- fw->ipv6.dmsk = dmasks[j];
- if (verbose)
- print_firewall_line(fw, handle);
- ret &= ip6tc_delete_entry(chain, fw, mask, handle);
- }
- }
- free(mask);
-
- return ret;
-}
-
-static int
-check_entry(const ip6t_chainlabel chain, struct ip6t_entry *fw,
- unsigned int nsaddrs, const struct in6_addr *saddrs,
- const struct in6_addr *smasks, unsigned int ndaddrs,
- const struct in6_addr *daddrs, const struct in6_addr *dmasks,
- bool verbose, struct ip6tc_handle *handle,
- struct xtables_rule_match *matches,
- const struct xtables_target *target)
-{
- unsigned int i, j;
- int ret = 1;
- unsigned char *mask;
-
- mask = make_delete_mask(matches, target);
- for (i = 0; i < nsaddrs; i++) {
- fw->ipv6.src = saddrs[i];
- fw->ipv6.smsk = smasks[i];
- for (j = 0; j < ndaddrs; j++) {
- fw->ipv6.dst = daddrs[j];
- fw->ipv6.dmsk = dmasks[j];
- if (verbose)
- print_firewall_line(fw, handle);
- ret &= ip6tc_check_entry(chain, fw, mask, handle);
- }
- }
-
- free(mask);
- return ret;
-}
-
-int
-for_each_chain6(int (*fn)(const ip6t_chainlabel, int, struct ip6tc_handle *),
- int verbose, int builtinstoo, struct ip6tc_handle *handle)
-{
- int ret = 1;
- const char *chain;
- char *chains;
- unsigned int i, chaincount = 0;
-
- chain = ip6tc_first_chain(handle);
- while (chain) {
- chaincount++;
- chain = ip6tc_next_chain(handle);
- }
-
- chains = xtables_malloc(sizeof(ip6t_chainlabel) * chaincount);
- i = 0;
- chain = ip6tc_first_chain(handle);
- while (chain) {
- strcpy(chains + i*sizeof(ip6t_chainlabel), chain);
- i++;
- chain = ip6tc_next_chain(handle);
- }
-
- for (i = 0; i < chaincount; i++) {
- if (!builtinstoo
- && ip6tc_builtin(chains + i*sizeof(ip6t_chainlabel),
- handle) == 1)
- continue;
- ret &= fn(chains + i*sizeof(ip6t_chainlabel), verbose, handle);
- }
-
- free(chains);
- return ret;
-}
-
-int
-flush_entries6(const ip6t_chainlabel chain, int verbose,
- struct ip6tc_handle *handle)
-{
- if (!chain)
- return for_each_chain6(flush_entries6, verbose, 1, handle);
-
- if (verbose)
- fprintf(stdout, "Flushing chain `%s'\n", chain);
- return ip6tc_flush_entries(chain, handle);
-}
-
-static int
-zero_entries(const ip6t_chainlabel chain, int verbose,
- struct ip6tc_handle *handle)
-{
- if (!chain)
- return for_each_chain6(zero_entries, verbose, 1, handle);
-
- if (verbose)
- fprintf(stdout, "Zeroing chain `%s'\n", chain);
- return ip6tc_zero_entries(chain, handle);
-}
-
-int
-delete_chain6(const ip6t_chainlabel chain, int verbose,
- struct ip6tc_handle *handle)
-{
- if (!chain)
- return for_each_chain6(delete_chain6, verbose, 0, handle);
-
- if (verbose)
- fprintf(stdout, "Deleting chain `%s'\n", chain);
- return ip6tc_delete_chain(chain, handle);
-}
-
-static int
-list_entries(const ip6t_chainlabel chain, int rulenum, int verbose, int numeric,
- int expanded, int linenumbers, struct ip6tc_handle *handle)
-{
- int found = 0;
- unsigned int format;
- const char *this;
-
- format = FMT_OPTIONS;
- if (!verbose)
- format |= FMT_NOCOUNTS;
- else
- format |= FMT_VIA;
-
- if (numeric)
- format |= FMT_NUMERIC;
-
- if (!expanded)
- format |= FMT_KILOMEGAGIGA;
-
- if (linenumbers)
- format |= FMT_LINENUMBERS;
-
- for (this = ip6tc_first_chain(handle);
- this;
- this = ip6tc_next_chain(handle)) {
- const struct ip6t_entry *i;
- unsigned int num;
-
- if (chain && strcmp(chain, this) != 0)
- continue;
-
- if (found) printf("\n");
-
- if (!rulenum)
- print_header(format, this, handle);
- i = ip6tc_first_rule(this, handle);
-
- num = 0;
- while (i) {
- num++;
- if (!rulenum || num == rulenum)
- print_firewall(i,
- ip6tc_get_target(i, handle),
- num,
- format,
- handle);
- i = ip6tc_next_rule(i, handle);
- }
- found = 1;
- }
-
- errno = ENOENT;
- return found;
-}
-
-/* This assumes that mask is contiguous, and byte-bounded. */
-static void
-print_iface(char letter, const char *iface, const unsigned char *mask,
- int invert)
-{
- unsigned int i;
-
- if (mask[0] == 0)
- return;
-
- printf("%s -%c ", invert ? " !" : "", letter);
-
- for (i = 0; i < IFNAMSIZ; i++) {
- if (mask[i] != 0) {
- if (iface[i] != '\0')
- printf("%c", iface[i]);
- } else {
- /* we can access iface[i-1] here, because
- * a few lines above we make sure that mask[0] != 0 */
- if (iface[i-1] != '\0')
- printf("+");
- break;
- }
- }
-}
-
-/* The ip6tables looks up the /etc/protocols. */
-static void print_proto(uint16_t proto, int invert)
-{
- if (proto) {
- unsigned int i;
- const char *invertstr = invert ? " !" : "";
-
- const struct protoent *pent = getprotobynumber(proto);
- if (pent) {
- printf("%s -p %s",
- invertstr, pent->p_name);
- return;
- }
-
- for (i = 0; xtables_chain_protos[i].name != NULL; ++i)
- if (xtables_chain_protos[i].num == proto) {
- printf("%s -p %s",
- invertstr, xtables_chain_protos[i].name);
- return;
- }
-
- printf("%s -p %u", invertstr, proto);
- }
-}
-
-static int print_match_save(const struct ip6t_entry_match *e,
- const struct ip6t_ip6 *ip)
-{
- const struct xtables_match *match =
- xtables_find_match(e->u.user.name, XTF_TRY_LOAD, NULL);
-
- if (match) {
- printf(" -m %s", e->u.user.name);
-
- /* some matches don't provide a save function */
- if (match->save)
- match->save(ip, e);
- } else {
- if (e->u.match_size) {
- fprintf(stderr,
- "Can't find library for match `%s'\n",
- e->u.user.name);
- exit(1);
- }
- }
- return 0;
-}
-
-/* print a given ip including mask if neccessary */
-static void print_ip(const char *prefix, const struct in6_addr *ip,
- const struct in6_addr *mask, int invert)
-{
- char buf[51];
- int l = ipv6_prefix_length(mask);
-
- if (l == 0 && !invert)
- return;
-
- printf("%s %s %s",
- invert ? " !" : "",
- prefix,
- inet_ntop(AF_INET6, ip, buf, sizeof buf));
-
- if (l == -1)
- printf("/%s", inet_ntop(AF_INET6, mask, buf, sizeof buf));
- else
- printf("/%d", l);
-}
-
-/* We want this to be readable, so only print out neccessary fields.
- * Because that's the kind of world I want to live in. */
-void print_rule6(const struct ip6t_entry *e,
- struct ip6tc_handle *h, const char *chain, int counters)
-{
- const struct ip6t_entry_target *t;
- const char *target_name;
-
- /* print counters for iptables-save */
- if (counters > 0)
- printf("[%llu:%llu] ", (unsigned long long)e->counters.pcnt, (unsigned long long)e->counters.bcnt);
-
- /* print chain name */
- printf("-A %s", chain);
-
- /* Print IP part. */
- print_ip("-s", &(e->ipv6.src), &(e->ipv6.smsk),
- e->ipv6.invflags & IP6T_INV_SRCIP);
-
- print_ip("-d", &(e->ipv6.dst), &(e->ipv6.dmsk),
- e->ipv6.invflags & IP6T_INV_DSTIP);
-
- print_iface('i', e->ipv6.iniface, e->ipv6.iniface_mask,
- e->ipv6.invflags & IP6T_INV_VIA_IN);
-
- print_iface('o', e->ipv6.outiface, e->ipv6.outiface_mask,
- e->ipv6.invflags & IP6T_INV_VIA_OUT);
-
- print_proto(e->ipv6.proto, e->ipv6.invflags & IP6T_INV_PROTO);
-
-#if 0
- /* not definied in ipv6
- * FIXME: linux/netfilter_ipv6/ip6_tables: IP6T_INV_FRAG why definied? */
- if (e->ipv6.flags & IPT_F_FRAG)
- printf("%s -f",
- e->ipv6.invflags & IP6T_INV_FRAG ? " !" : "");
-#endif
-
- if (e->ipv6.flags & IP6T_F_TOS)
- printf("%s -? %d",
- e->ipv6.invflags & IP6T_INV_TOS ? " !" : "",
- e->ipv6.tos);
-
- /* Print matchinfo part */
- if (e->target_offset) {
- IP6T_MATCH_ITERATE(e, print_match_save, &e->ipv6);
- }
-
- /* print counters for iptables -R */
- if (counters < 0)
- printf(" -c %llu %llu", (unsigned long long)e->counters.pcnt, (unsigned long long)e->counters.bcnt);
-
- /* Print target name */
- target_name = ip6tc_get_target(e, h);
- if (target_name && (*target_name != '\0'))
-#ifdef IP6T_F_GOTO
- printf(" -%c %s", e->ipv6.flags & IP6T_F_GOTO ? 'g' : 'j', target_name);
-#else
- printf(" -j %s", target_name);
-#endif
-
- /* Print targinfo part */
- t = ip6t_get_target((struct ip6t_entry *)e);
- if (t->u.user.name[0]) {
- struct xtables_target *target =
- xtables_find_target(t->u.user.name, XTF_TRY_LOAD);
-
- if (!target) {
- fprintf(stderr, "Can't find library for target `%s'\n",
- t->u.user.name);
- exit(1);
- }
-
- if (target->save)
- target->save(&e->ipv6, t);
- else {
- /* If the target size is greater than ip6t_entry_target
- * there is something to be saved, we just don't know
- * how to print it */
- if (t->u.target_size !=
- sizeof(struct ip6t_entry_target)) {
- fprintf(stderr, "Target `%s' is missing "
- "save function\n",
- t->u.user.name);
- exit(1);
- }
- }
- }
- printf("\n");
-}
-
-static int
-list_rules(const ip6t_chainlabel chain, int rulenum, int counters,
- struct ip6tc_handle *handle)
-{
- const char *this = NULL;
- int found = 0;
-
- if (counters)
- counters = -1; /* iptables -c format */
-
- /* Dump out chain names first,
- * thereby preventing dependency conflicts */
- if (!rulenum) for (this = ip6tc_first_chain(handle);
- this;
- this = ip6tc_next_chain(handle)) {
- if (chain && strcmp(this, chain) != 0)
- continue;
-
- if (ip6tc_builtin(this, handle)) {
- struct ip6t_counters count;
- printf("-P %s %s", this, ip6tc_get_policy(this, &count, handle));
- if (counters)
- printf(" -c %llu %llu", (unsigned long long)count.pcnt, (unsigned long long)count.bcnt);
- printf("\n");
- } else {
- printf("-N %s\n", this);
- }
- }
-
- for (this = ip6tc_first_chain(handle);
- this;
- this = ip6tc_next_chain(handle)) {
- const struct ip6t_entry *e;
- int num = 0;
-
- if (chain && strcmp(this, chain) != 0)
- continue;
-
- /* Dump out rules */
- e = ip6tc_first_rule(this, handle);
- while(e) {
- num++;
- if (!rulenum || num == rulenum)
- print_rule6(e, handle, this, counters);
- e = ip6tc_next_rule(e, handle);
- }
- found = 1;
- }
-
- errno = ENOENT;
- return found;
-}
-
-static struct ip6t_entry *
-generate_entry(const struct ip6t_entry *fw,
- struct xtables_rule_match *matches,
- struct ip6t_entry_target *target)
-{
- unsigned int size;
- struct xtables_rule_match *matchp;
- struct ip6t_entry *e;
-
- size = sizeof(struct ip6t_entry);
- for (matchp = matches; matchp; matchp = matchp->next)
- size += matchp->match->m->u.match_size;
-
- e = xtables_malloc(size + target->u.target_size);
- *e = *fw;
- e->target_offset = size;
- e->next_offset = size + target->u.target_size;
-
- size = 0;
- for (matchp = matches; matchp; matchp = matchp->next) {
- memcpy(e->elems + size, matchp->match->m, matchp->match->m->u.match_size);
- size += matchp->match->m->u.match_size;
- }
- memcpy(e->elems + size, target, target->u.target_size);
-
- return e;
-}
-
-static void clear_rule_matches(struct xtables_rule_match **matches)
-{
- struct xtables_rule_match *matchp, *tmp;
-
- for (matchp = *matches; matchp;) {
- tmp = matchp->next;
- if (matchp->match->m) {
- free(matchp->match->m);
- matchp->match->m = NULL;
- }
- if (matchp->match == matchp->match->next) {
- free(matchp->match);
- matchp->match = NULL;
- }
- free(matchp);
- matchp = tmp;
- }
-
- *matches = NULL;
-}
-
-static void command_jump(struct iptables_command_state *cs)
-{
- size_t size;
-
- set_option(&cs->options, OPT_JUMP, &cs->fw6.ipv6.invflags, cs->invert);
- cs->jumpto = parse_target(optarg);
- /* TRY_LOAD (may be chain name) */
- cs->target = xtables_find_target(cs->jumpto, XTF_TRY_LOAD);
-
- if (cs->target == NULL)
- return;
-
- size = XT_ALIGN(sizeof(struct ip6t_entry_target)) + cs->target->size;
-
- cs->target->t = xtables_calloc(1, size);
- cs->target->t->u.target_size = size;
- strcpy(cs->target->t->u.user.name, cs->jumpto);
- cs->target->t->u.user.revision = cs->target->revision;
- if (cs->target->init != NULL)
- cs->target->init(cs->target->t);
- if (cs->target->x6_options != NULL)
- opts = xtables_options_xfrm(ip6tables_globals.orig_opts, opts,
- cs->target->x6_options,
- &cs->target->option_offset);
- else
- opts = xtables_merge_options(ip6tables_globals.orig_opts, opts,
- cs->target->extra_opts,
- &cs->target->option_offset);
- if (opts == NULL)
- xtables_error(OTHER_PROBLEM, "can't alloc memory!");
-}
-
-static void command_match(struct iptables_command_state *cs)
-{
- struct xtables_match *m;
- size_t size;
-
- if (cs->invert)
- xtables_error(PARAMETER_PROBLEM,
- "unexpected ! flag before --match");
-
- m = xtables_find_match(optarg, XTF_LOAD_MUST_SUCCEED, &cs->matches);
- size = XT_ALIGN(sizeof(struct ip6t_entry_match)) + m->size;
- m->m = xtables_calloc(1, size);
- m->m->u.match_size = size;
- strcpy(m->m->u.user.name, m->name);
- m->m->u.user.revision = m->revision;
- if (m->init != NULL)
- m->init(m->m);
- if (m == m->next)
- return;
- /* Merge options for non-cloned matches */
- if (m->x6_options != NULL)
- opts = xtables_options_xfrm(ip6tables_globals.orig_opts, opts,
- m->x6_options, &m->option_offset);
- else if (m->extra_opts != NULL)
- opts = xtables_merge_options(ip6tables_globals.orig_opts, opts,
- m->extra_opts, &m->option_offset);
-}
-
-int do_command6(int argc, char *argv[], char **table, struct ip6tc_handle **handle)
-{
- struct iptables_command_state cs;
- struct ip6t_entry *e = NULL;
- unsigned int nsaddrs = 0, ndaddrs = 0;
- struct in6_addr *saddrs = NULL, *daddrs = NULL;
- struct in6_addr *smasks = NULL, *dmasks = NULL;
-
- int verbose = 0;
- const char *chain = NULL;
- const char *shostnetworkmask = NULL, *dhostnetworkmask = NULL;
- const char *policy = NULL, *newname = NULL;
- unsigned int rulenum = 0, command = 0;
- const char *pcnt = NULL, *bcnt = NULL;
- int ret = 1;
- struct xtables_match *m;
- struct xtables_rule_match *matchp;
- struct xtables_target *t;
- unsigned long long cnt;
-
- memset(&cs, 0, sizeof(cs));
- cs.jumpto = "";
- cs.argv = argv;
-
- /* re-set optind to 0 in case do_command6 gets called
- * a second time */
- optind = 0;
-
- /* clear mflags in case do_command6 gets called a second time
- * (we clear the global list of all matches for security)*/
- for (m = xtables_matches; m; m = m->next)
- m->mflags = 0;
-
- for (t = xtables_targets; t; t = t->next) {
- t->tflags = 0;
- t->used = 0;
- }
-
- /* Suppress error messages: we may add new options if we
- demand-load a protocol. */
- opterr = 0;
-
- opts = xt_params->orig_opts;
- while ((cs.c = getopt_long(argc, argv,
- "-:A:C:D:R:I:L::S::M:F::Z::N:X::E:P:Vh::o:p:s:d:j:i:bvnt:m:xc:g:46",
- opts, NULL)) != -1) {
- switch (cs.c) {
- /*
- * Command selection
- */
- case 'A':
- add_command(&command, CMD_APPEND, CMD_NONE,
- cs.invert);
- chain = optarg;
- break;
-
- case 'C':
- add_command(&command, CMD_CHECK, CMD_NONE,
- cs.invert);
- chain = optarg;
- break;
-
- case 'D':
- add_command(&command, CMD_DELETE, CMD_NONE,
- cs.invert);
- chain = optarg;
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!') {
- rulenum = parse_rulenumber(argv[optind++]);
- command = CMD_DELETE_NUM;
- }
- break;
-
- case 'R':
- add_command(&command, CMD_REPLACE, CMD_NONE,
- cs.invert);
- chain = optarg;
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- rulenum = parse_rulenumber(argv[optind++]);
- else
- xtables_error(PARAMETER_PROBLEM,
- "-%c requires a rule number",
- cmd2char(CMD_REPLACE));
- break;
-
- case 'I':
- add_command(&command, CMD_INSERT, CMD_NONE,
- cs.invert);
- chain = optarg;
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- rulenum = parse_rulenumber(argv[optind++]);
- else rulenum = 1;
- break;
-
- case 'L':
- add_command(&command, CMD_LIST,
- CMD_ZERO | CMD_ZERO_NUM, cs.invert);
- if (optarg) chain = optarg;
- else if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- chain = argv[optind++];
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- rulenum = parse_rulenumber(argv[optind++]);
- break;
-
- case 'S':
- add_command(&command, CMD_LIST_RULES,
- CMD_ZERO | CMD_ZERO_NUM, cs.invert);
- if (optarg) chain = optarg;
- else if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- chain = argv[optind++];
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- rulenum = parse_rulenumber(argv[optind++]);
- break;
-
- case 'F':
- add_command(&command, CMD_FLUSH, CMD_NONE,
- cs.invert);
- if (optarg) chain = optarg;
- else if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- chain = argv[optind++];
- break;
-
- case 'Z':
- add_command(&command, CMD_ZERO, CMD_LIST|CMD_LIST_RULES,
- cs.invert);
- if (optarg) chain = optarg;
- else if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- chain = argv[optind++];
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!') {
- rulenum = parse_rulenumber(argv[optind++]);
- command = CMD_ZERO_NUM;
- }
- break;
-
- case 'N':
- if (optarg && (*optarg == '-' || *optarg == '!'))
- xtables_error(PARAMETER_PROBLEM,
- "chain name not allowed to start "
- "with `%c'\n", *optarg);
- if (xtables_find_target(optarg, XTF_TRY_LOAD))
- xtables_error(PARAMETER_PROBLEM,
- "chain name may not clash "
- "with target name\n");
- add_command(&command, CMD_NEW_CHAIN, CMD_NONE,
- cs.invert);
- chain = optarg;
- break;
-
- case 'X':
- add_command(&command, CMD_DELETE_CHAIN, CMD_NONE,
- cs.invert);
- if (optarg) chain = optarg;
- else if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- chain = argv[optind++];
- break;
-
- case 'E':
- add_command(&command, CMD_RENAME_CHAIN, CMD_NONE,
- cs.invert);
- chain = optarg;
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- newname = argv[optind++];
- else
- xtables_error(PARAMETER_PROBLEM,
- "-%c requires old-chain-name and "
- "new-chain-name",
- cmd2char(CMD_RENAME_CHAIN));
- break;
-
- case 'P':
- add_command(&command, CMD_SET_POLICY, CMD_NONE,
- cs.invert);
- chain = optarg;
- if (optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- policy = argv[optind++];
- else
- xtables_error(PARAMETER_PROBLEM,
- "-%c requires a chain and a policy",
- cmd2char(CMD_SET_POLICY));
- break;
-
- case 'h':
- if (!optarg)
- optarg = argv[optind];
-
- /* ip6tables -p icmp -h */
- if (!cs.matches && cs.protocol)
- xtables_find_match(cs.protocol, XTF_TRY_LOAD,
- &cs.matches);
-
- exit_printhelp(cs.matches);
-
- /*
- * Option selection
- */
- case 'p':
- xtables_check_inverse(optarg, &cs.invert, &optind, argc, argv);
- set_option(&cs.options, OPT_PROTOCOL, &cs.fw6.ipv6.invflags,
- cs.invert);
-
- /* Canonicalize into lower case */
- for (cs.protocol = optarg; *cs.protocol; cs.protocol++)
- *cs.protocol = tolower(*cs.protocol);
-
- cs.protocol = optarg;
- cs.fw6.ipv6.proto = xtables_parse_protocol(cs.protocol);
- cs.fw6.ipv6.flags |= IP6T_F_PROTO;
-
- if (cs.fw6.ipv6.proto == 0
- && (cs.fw6.ipv6.invflags & IP6T_INV_PROTO))
- xtables_error(PARAMETER_PROBLEM,
- "rule would never match protocol");
-
- if (is_exthdr(cs.fw6.ipv6.proto)
- && (cs.fw6.ipv6.invflags & IP6T_INV_PROTO) == 0)
- fprintf(stderr,
- "Warning: never matched protocol: %s. "
- "use extension match instead.\n",
- cs.protocol);
- break;
-
- case 's':
- xtables_check_inverse(optarg, &cs.invert, &optind, argc, argv);
- set_option(&cs.options, OPT_SOURCE, &cs.fw6.ipv6.invflags,
- cs.invert);
- shostnetworkmask = optarg;
- break;
-
- case 'd':
- xtables_check_inverse(optarg, &cs.invert, &optind, argc, argv);
- set_option(&cs.options, OPT_DESTINATION, &cs.fw6.ipv6.invflags,
- cs.invert);
- dhostnetworkmask = optarg;
- break;
-
-#ifdef IP6T_F_GOTO
- case 'g':
- set_option(&cs.options, OPT_JUMP, &cs.fw6.ipv6.invflags,
- cs.invert);
- cs.fw6.ipv6.flags |= IP6T_F_GOTO;
- cs.jumpto = parse_target(optarg);
- break;
-#endif
-
- case 'j':
- command_jump(&cs);
- break;
-
-
- case 'i':
- if (*optarg == '\0')
- xtables_error(PARAMETER_PROBLEM,
- "Empty interface is likely to be "
- "undesired");
- xtables_check_inverse(optarg, &cs.invert, &optind, argc, argv);
- set_option(&cs.options, OPT_VIANAMEIN, &cs.fw6.ipv6.invflags,
- cs.invert);
- xtables_parse_interface(optarg,
- cs.fw6.ipv6.iniface,
- cs.fw6.ipv6.iniface_mask);
- break;
-
- case 'o':
- if (*optarg == '\0')
- xtables_error(PARAMETER_PROBLEM,
- "Empty interface is likely to be "
- "undesired");
- xtables_check_inverse(optarg, &cs.invert, &optind, argc, argv);
- set_option(&cs.options, OPT_VIANAMEOUT, &cs.fw6.ipv6.invflags,
- cs.invert);
- xtables_parse_interface(optarg,
- cs.fw6.ipv6.outiface,
- cs.fw6.ipv6.outiface_mask);
- break;
-
- case 'v':
- if (!verbose)
- set_option(&cs.options, OPT_VERBOSE,
- &cs.fw6.ipv6.invflags, cs.invert);
- verbose++;
- break;
-
- case 'm':
- command_match(&cs);
- break;
-
- case 'n':
- set_option(&cs.options, OPT_NUMERIC, &cs.fw6.ipv6.invflags,
- cs.invert);
- break;
-
- case 't':
- if (cs.invert)
- xtables_error(PARAMETER_PROBLEM,
- "unexpected ! flag before --table");
- *table = optarg;
- break;
-
- case 'x':
- set_option(&cs.options, OPT_EXPANDED, &cs.fw6.ipv6.invflags,
- cs.invert);
- break;
-
- case 'V':
- if (cs.invert)
- printf("Not %s ;-)\n", prog_vers);
- else
- printf("%s v%s\n",
- prog_name, prog_vers);
- exit(0);
-
- case '0':
- set_option(&cs.options, OPT_LINENUMBERS, &cs.fw6.ipv6.invflags,
- cs.invert);
- break;
-
- case 'M':
- xtables_modprobe_program = optarg;
- break;
-
- case 'c':
-
- set_option(&cs.options, OPT_COUNTERS, &cs.fw6.ipv6.invflags,
- cs.invert);
- pcnt = optarg;
- bcnt = strchr(pcnt + 1, ',');
- if (bcnt)
- bcnt++;
- if (!bcnt && optind < argc && argv[optind][0] != '-'
- && argv[optind][0] != '!')
- bcnt = argv[optind++];
- if (!bcnt)
- xtables_error(PARAMETER_PROBLEM,
- "-%c requires packet and byte counter",
- opt2char(OPT_COUNTERS));
-
- if (sscanf(pcnt, "%llu", &cnt) != 1)
- xtables_error(PARAMETER_PROBLEM,
- "-%c packet counter not numeric",
- opt2char(OPT_COUNTERS));
- cs.fw6.counters.pcnt = cnt;
-
- if (sscanf(bcnt, "%llu", &cnt) != 1)
- xtables_error(PARAMETER_PROBLEM,
- "-%c byte counter not numeric",
- opt2char(OPT_COUNTERS));
- cs.fw6.counters.bcnt = cnt;
- break;
-
- case '4':
- /* This is not the IPv4 iptables */
- if (line != -1)
- return 1; /* success: line ignored */
- fprintf(stderr, "This is the IPv6 version of ip6tables.\n");
- exit_tryhelp(2);
-
- case '6':
- /* This is indeed the IPv6 ip6tables */
- break;
-
- case 1: /* non option */
- if (optarg[0] == '!' && optarg[1] == '\0') {
- if (cs.invert)
- xtables_error(PARAMETER_PROBLEM,
- "multiple consecutive ! not"
- " allowed");
- cs.invert = TRUE;
- optarg[0] = '\0';
- continue;
- }
- fprintf(stderr, "Bad argument `%s'\n", optarg);
- exit_tryhelp(2);
-
- default:
- command_default(&cs, &ip6tables_globals);
- break;
- }
- cs.invert = FALSE;
- }
-
- for (matchp = cs.matches; matchp; matchp = matchp->next)
- xtables_option_mfcall(matchp->match);
- if (cs.target != NULL)
- xtables_option_tfcall(cs.target);
-
- /* Fix me: must put inverse options checking here --MN */
-
- if (optind < argc)
- xtables_error(PARAMETER_PROBLEM,
- "unknown arguments found on commandline");
- if (!command)
- xtables_error(PARAMETER_PROBLEM, "no command specified");
- if (cs.invert)
- xtables_error(PARAMETER_PROBLEM,
- "nothing appropriate following !");
-
- if (command & (CMD_REPLACE | CMD_INSERT | CMD_DELETE | CMD_APPEND | CMD_CHECK)) {
- if (!(cs.options & OPT_DESTINATION))
- dhostnetworkmask = "::0/0";
- if (!(cs.options & OPT_SOURCE))
- shostnetworkmask = "::0/0";
- }
-
- if (shostnetworkmask)
- xtables_ip6parse_multiple(shostnetworkmask, &saddrs,
- &smasks, &nsaddrs);
-
- if (dhostnetworkmask)
- xtables_ip6parse_multiple(dhostnetworkmask, &daddrs,
- &dmasks, &ndaddrs);
-
- if ((nsaddrs > 1 || ndaddrs > 1) &&
- (cs.fw6.ipv6.invflags & (IP6T_INV_SRCIP | IP6T_INV_DSTIP)))
- xtables_error(PARAMETER_PROBLEM, "! not allowed with multiple"
- " source or destination IP addresses");
-
- if (command == CMD_REPLACE && (nsaddrs != 1 || ndaddrs != 1))
- xtables_error(PARAMETER_PROBLEM, "Replacement rule does not "
- "specify a unique address");
-
- generic_opt_check(command, cs.options);
-
- if (chain != NULL && strlen(chain) >= XT_EXTENSION_MAXNAMELEN)
- xtables_error(PARAMETER_PROBLEM,
- "chain name `%s' too long (must be under %u chars)",
- chain, XT_EXTENSION_MAXNAMELEN);
-
- /* only allocate handle if we weren't called with a handle */
- if (!*handle)
- *handle = ip6tc_init(*table);
-
- /* try to insmod the module if iptc_init failed */
- if (!*handle && xtables_load_ko(xtables_modprobe_program, false) != -1)
- *handle = ip6tc_init(*table);
-
- if (!*handle)
- xtables_error(VERSION_PROBLEM,
- "can't initialize ip6tables table `%s': %s",
- *table, ip6tc_strerror(errno));
-
- if (command == CMD_APPEND
- || command == CMD_DELETE
- || command == CMD_CHECK
- || command == CMD_INSERT
- || command == CMD_REPLACE) {
- if (strcmp(chain, "PREROUTING") == 0
- || strcmp(chain, "INPUT") == 0) {
- /* -o not valid with incoming packets. */
- if (cs.options & OPT_VIANAMEOUT)
- xtables_error(PARAMETER_PROBLEM,
- "Can't use -%c with %s\n",
- opt2char(OPT_VIANAMEOUT),
- chain);
- }
-
- if (strcmp(chain, "POSTROUTING") == 0
- || strcmp(chain, "OUTPUT") == 0) {
- /* -i not valid with outgoing packets */
- if (cs.options & OPT_VIANAMEIN)
- xtables_error(PARAMETER_PROBLEM,
- "Can't use -%c with %s\n",
- opt2char(OPT_VIANAMEIN),
- chain);
- }
-
- if (cs.target && ip6tc_is_chain(cs.jumpto, *handle)) {
- fprintf(stderr,
- "Warning: using chain %s, not extension\n",
- cs.jumpto);
-
- if (cs.target->t)
- free(cs.target->t);
-
- cs.target = NULL;
- }
-
- /* If they didn't specify a target, or it's a chain
- name, use standard. */
- if (!cs.target
- && (strlen(cs.jumpto) == 0
- || ip6tc_is_chain(cs.jumpto, *handle))) {
- size_t size;
-
- cs.target = xtables_find_target(IP6T_STANDARD_TARGET,
- XTF_LOAD_MUST_SUCCEED);
-
- size = sizeof(struct ip6t_entry_target)
- + cs.target->size;
- cs.target->t = xtables_calloc(1, size);
- cs.target->t->u.target_size = size;
- strcpy(cs.target->t->u.user.name, cs.jumpto);
- if (cs.target->init != NULL)
- cs.target->init(cs.target->t);
- }
-
- if (!cs.target) {
- /* it is no chain, and we can't load a plugin.
- * We cannot know if the plugin is corrupt, non
- * existant OR if the user just misspelled a
- * chain. */
-#ifdef IP6T_F_GOTO
- if (cs.fw6.ipv6.flags & IP6T_F_GOTO)
- xtables_error(PARAMETER_PROBLEM,
- "goto '%s' is not a chain\n",
- cs.jumpto);
-#endif
- xtables_find_target(cs.jumpto, XTF_LOAD_MUST_SUCCEED);
- } else {
- e = generate_entry(&cs.fw6, cs.matches, cs.target->t);
- free(cs.target->t);
- }
- }
-
- switch (command) {
- case CMD_APPEND:
- ret = append_entry(chain, e,
- nsaddrs, saddrs, smasks,
- ndaddrs, daddrs, dmasks,
- cs.options&OPT_VERBOSE,
- *handle);
- break;
- case CMD_DELETE:
- ret = delete_entry(chain, e,
- nsaddrs, saddrs, smasks,
- ndaddrs, daddrs, dmasks,
- cs.options&OPT_VERBOSE,
- *handle, cs.matches, cs.target);
- break;
- case CMD_DELETE_NUM:
- ret = ip6tc_delete_num_entry(chain, rulenum - 1, *handle);
- break;
- case CMD_CHECK:
- ret = check_entry(chain, e,
- nsaddrs, saddrs, smasks,
- ndaddrs, daddrs, dmasks,
- cs.options&OPT_VERBOSE,
- *handle, cs.matches, cs.target);
- break;
- case CMD_REPLACE:
- ret = replace_entry(chain, e, rulenum - 1,
- saddrs, smasks, daddrs, dmasks,
- cs.options&OPT_VERBOSE, *handle);
- break;
- case CMD_INSERT:
- ret = insert_entry(chain, e, rulenum - 1,
- nsaddrs, saddrs, smasks,
- ndaddrs, daddrs, dmasks,
- cs.options&OPT_VERBOSE,
- *handle);
- break;
- case CMD_FLUSH:
- ret = flush_entries6(chain, cs.options&OPT_VERBOSE, *handle);
- break;
- case CMD_ZERO:
- ret = zero_entries(chain, cs.options&OPT_VERBOSE, *handle);
- break;
- case CMD_ZERO_NUM:
- ret = ip6tc_zero_counter(chain, rulenum, *handle);
- break;
- case CMD_LIST:
- case CMD_LIST|CMD_ZERO:
- case CMD_LIST|CMD_ZERO_NUM:
- ret = list_entries(chain,
- rulenum,
- cs.options&OPT_VERBOSE,
- cs.options&OPT_NUMERIC,
- cs.options&OPT_EXPANDED,
- cs.options&OPT_LINENUMBERS,
- *handle);
- if (ret && (command & CMD_ZERO))
- ret = zero_entries(chain,
- cs.options&OPT_VERBOSE, *handle);
- if (ret && (command & CMD_ZERO_NUM))
- ret = ip6tc_zero_counter(chain, rulenum, *handle);
- break;
- case CMD_LIST_RULES:
- case CMD_LIST_RULES|CMD_ZERO:
- case CMD_LIST_RULES|CMD_ZERO_NUM:
- ret = list_rules(chain,
- rulenum,
- cs.options&OPT_VERBOSE,
- *handle);
- if (ret && (command & CMD_ZERO))
- ret = zero_entries(chain,
- cs.options&OPT_VERBOSE, *handle);
- if (ret && (command & CMD_ZERO_NUM))
- ret = ip6tc_zero_counter(chain, rulenum, *handle);
- break;
- case CMD_NEW_CHAIN:
- ret = ip6tc_create_chain(chain, *handle);
- break;
- case CMD_DELETE_CHAIN:
- ret = delete_chain6(chain, cs.options&OPT_VERBOSE, *handle);
- break;
- case CMD_RENAME_CHAIN:
- ret = ip6tc_rename_chain(chain, newname, *handle);
- break;
- case CMD_SET_POLICY:
- ret = ip6tc_set_policy(chain, policy, cs.options&OPT_COUNTERS ? &cs.fw6.counters : NULL, *handle);
- break;
- default:
- /* We should never reach this... */
- exit_tryhelp(2);
- }
-
- if (verbose > 1)
- dump_entries6(*handle);
-
- clear_rule_matches(&cs.matches);
-
- if (e != NULL) {
- free(e);
- e = NULL;
- }
-
- free(saddrs);
- free(smasks);
- free(daddrs);
- free(dmasks);
- xtables_free_opts(1);
-
- return ret;
-}