From 1fa1c2051dc082f102bb985462e3fd56fad6874d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
Date: Wed, 8 Feb 2017 14:57:51 +0100
Subject: [PATCH] Support for 1.6.1
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Signed-off-by: Petr Písař <ppisar@redhat.com>
---
iptables/iptables-detect-version.c | 6 +-
iptables/iptables-standalone.c | 3 +
iptables/iptables-standalone.c-v1.6.1 | 82 ++
iptables/iptables.c-v1.6.1 | 2006 +++++++++++++++++++++++++++++++++
iptables/xshared.c | 3 +
iptables/xshared.c-v1.6.1 | 306 +++++
iptables/xshared.h | 4 +
iptables/xshared.h-v1.6.1 | 95 ++
8 files changed, 2504 insertions(+), 1 deletion(-)
create mode 100644 iptables/iptables-standalone.c-v1.6.1
create mode 100644 iptables/iptables.c-v1.6.1
create mode 100644 iptables/xshared.c-v1.6.1
create mode 100644 iptables/xshared.h-v1.6.1
diff --git a/iptables/iptables-detect-version.c b/iptables/iptables-detect-version.c
index f3ce810..7c86272 100644
--- a/iptables/iptables-detect-version.c
+++ b/iptables/iptables-detect-version.c
@@ -61,7 +61,11 @@
#warning "This version of xtables is currently not supported by this Perl package"
#include "iptables.c-v1.6.0"
-#elif XTABLES_VERSION_CODE > 11
+#elif XTABLES_VERSION_CODE == 12
+#warning "This version of xtables is currently not supported by this Perl package"
+#include "iptables.c-v1.6.1"
+
+#elif XTABLES_VERSION_CODE > 12
#error "The libxtables is newer than this package support and know of - Sorry!"
#error " Please inform the package author of this issue, thanks! "
diff --git a/iptables/iptables-standalone.c b/iptables/iptables-standalone.c
index 6071ac5..4cf2afe 100644
--- a/iptables/iptables-standalone.c
+++ b/iptables/iptables-standalone.c
@@ -15,6 +15,9 @@
#elif XTABLES_VERSION_CODE == 11
#include "iptables-standalone.c-v1.6.0"
+#elif XTABLES_VERSION_CODE == 12
+#include "iptables-standalone.c-v1.6.1"
+
#else
#error "The libxtables is newer than this package support and know of - Sorry!"
#error " Please inform the package author of this issue, thanks! "
diff --git a/iptables/iptables-standalone.c-v1.6.1 b/iptables/iptables-standalone.c-v1.6.1
new file mode 100644
index 0000000..4da1d7f
--- /dev/null
+++ b/iptables/iptables-standalone.c-v1.6.1
@@ -0,0 +1,82 @@
+/*
+ * Author: Paul.Russell@rustcorp.com.au and mneuling@radlogic.com.au
+ *
+ * Based on the ipchains code by Paul Russell and Michael Neuling
+ *
+ * (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>
+ *
+ * iptables -- IP firewall administration for kernels with
+ * firewall table (aimed for the 2.3 kernels)
+ *
+ * See the accompanying manual page iptables(8) for information
+ * about proper usage of this program.
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <iptables.h>
+#include "iptables-multi.h"
+
+int
+iptables_main(int argc, char *argv[])
+{
+ int ret;
+ char *table = "filter";
+ struct xtc_handle *handle = NULL;
+
+ iptables_globals.program_name = "iptables";
+ ret = xtables_init_all(&iptables_globals, NFPROTO_IPV4);
+ if (ret < 0) {
+ fprintf(stderr, "%s/%s Failed to initialize xtables\n",
+ iptables_globals.program_name,
+ iptables_globals.program_version);
+ exit(1);
+ }
+#if defined(ALL_INCLUSIVE) || defined(NO_SHARED_LIBS)
+ init_extensions();
+ init_extensions4();
+#endif
+
+ ret = do_command4(argc, argv, &table, &handle, false);
+ if (ret) {
+ ret = iptc_commit(handle);
+ iptc_free(handle);
+ }
+
+ if (!ret) {
+ if (errno == EINVAL) {
+ fprintf(stderr, "iptables: %s. "
+ "Run `dmesg' for more information.\n",
+ iptc_strerror(errno));
+ } else {
+ fprintf(stderr, "iptables: %s.\n",
+ iptc_strerror(errno));
+ }
+ if (errno == EAGAIN) {
+ exit(RESOURCE_PROBLEM);
+ }
+ }
+
+ exit(!ret);
+}
diff --git a/iptables/iptables.c-v1.6.1 b/iptables/iptables.c-v1.6.1
new file mode 100644
index 0000000..e0d092f
--- /dev/null
+++ b/iptables/iptables.c-v1.6.1
@@ -0,0 +1,2006 @@
+/* Code to take an iptables-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 <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdarg.h>
+#include <limits.h>
+#include <unistd.h>
+#include <iptables.h>
+#include <xtables.h>
+#include <fcntl.h>
+#include "xshared.h"
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+#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',
+ 'N', 'X', 'P', 'E', 'S', 'Z', 'C' };
+
+#define OPT_FRAGMENT 0x00800U
+#define NUMBER_OF_OPT ARRAY_SIZE(optflags)
+static const char optflags[]
+= { 'n', 's', 'd', 'p', 'j', 'v', 'x', 'i', 'o', '0', 'c', 'f'};
+
+static const char unsupported_rev[] = " [unsupported revision]";
+
+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 = "wait", .has_arg = 2, .val = 'w'},
+ {.name = "wait-interval", .has_arg = 2, .val = 'W'},
+ {.name = "exact", .has_arg = 0, .val = 'x'},
+ {.name = "fragments", .has_arg = 0, .val = 'f'},
+ {.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 iptables_exit_error(enum xtables_exittype status, const char *msg, ...) __attribute__((noreturn, format(printf,2,3)));
+
+struct xtables_globals iptables_globals = {
+ .option_offset = 0,
+ .program_version = IPTABLES_VERSION,
+ .orig_opts = original_opts,
+ .exit_err = iptables_exit_error,
+ .compat_rev = xtables_compatible_revision,
+};
+
+/* 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 -f */
+/*INSERT*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x',' ',' '},
+/*DELETE*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x','x',' '},
+/*DELETE_NUM*/{'x','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','x'},
+/*FLUSH*/ {'x','x','x','x','x',' ','x','x','x','x','x','x'},
+/*ZERO*/ {'x','x','x','x','x',' ','x','x','x','x','x','x'},
+/*NEW_CHAIN*/ {'x','x','x','x','x',' ','x','x','x','x','x','x'},
+/*DEL_CHAIN*/ {'x','x','x','x','x',' ','x','x','x','x','x','x'},
+/*SET_POLICY*/{'x','x','x','x','x',' ','x','x','x','x',' ','x'},
+/*RENAME*/ {'x','x','x','x','x',' ','x','x','x','x','x','x'},
+/*LIST_RULES*/{'x','x','x','x','x',' ','x','x','x','x','x','x'},
+/*ZERO_NUM*/ {'x','x','x','x','x',' ','x','x','x','x','x','x'},
+/*CHECK*/ {'x',' ',' ',' ',' ',' ','x',' ',' ','x','x',' '},
+};
+
+static const int inverse_for_options[NUMBER_OF_OPT] =
+{
+/* -n */ 0,
+/* -s */ IPT_INV_SRCIP,
+/* -d */ IPT_INV_DSTIP,
+/* -p */ XT_INV_PROTO,
+/* -j */ 0,
+/* -v */ 0,
+/* -x */ 0,
+/* -i */ IPT_INV_VIA_IN,
+/* -o */ IPT_INV_VIA_OUT,
+/*--line*/ 0,
+/* -c */ 0,
+/* -f */ IPT_INV_FRAG,
+};
+
+#define opts iptables_globals.opts
+#define prog_name iptables_globals.program_name
+#define prog_vers iptables_globals.program_version
+
+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 Nothing (line is ignored by ip6tables-restore)\n"
+" --ipv6 -6 Error (line is ignored by iptables-restore)\n"
+"[!] --protocol -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 IPT_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"
+" --wait -w [seconds] maximum wait to acquire xtables lock before give up\n"
+" --wait-interval -W [usecs] wait time to try to acquire xtables lock\n"
+" default is 1 second\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
+iptables_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 iptables 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.
+*/
+
+/* Christophe Burki wants `-p 6' to imply `-m tcp'. */
+/* 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 void
+parse_chain(const char *chainname)
+{
+ const char *ptr;
+
+ if (strlen(chainname) >= XT_EXTENSION_MAXNAMELEN)
+ xtables_error(PARAMETER_PROBLEM,
+ "chain name `%s' too long (must be under %u chars)",
+ chainname, XT_EXTENSION_MAXNAMELEN);
+
+ if (*chainname == '-' || *chainname == '!')
+ xtables_error(PARAMETER_PROBLEM,
+ "chain name not allowed to start "
+ "with `%c'\n", *chainname);
+
+ if (xtables_find_target(chainname, XTF_TRY_LOAD))
+ xtables_error(PARAMETER_PROBLEM,
+ "chain name may not clash "
+ "with target name\n");
+
+ for (ptr = chainname; *ptr; ptr++)
+ if (isspace(*ptr))
+ xtables_error(PARAMETER_PROBLEM,
+ "Invalid chain name `%s'", chainname);
+}
+
+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_header(unsigned int format, const char *chain, struct xtc_handle *handle)
+{
+ struct xt_counters counters;
+ const char *pol = iptc_get_policy(chain, &counters, handle);
+ printf("Chain %s", chain);
+ if (pol) {
+ printf(" (policy %s", pol);
+ if (!(format & FMT_NOCOUNTS)) {
+ fputc(' ', stdout);
+ xtables_print_num(counters.pcnt, (format|FMT_NOTABLE));
+ fputs("packets, ", stdout);
+ xtables_print_num(counters.bcnt, (format|FMT_NOTABLE));
+ fputs("bytes", stdout);
+ }
+ printf(")\n");
+ } else {
+ unsigned int refs;
+ if (!iptc_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 xt_entry_match *m,
+ const struct ipt_ip *ip,
+ int numeric)
+{
+ const struct xtables_match *match =
+ xtables_find_match(m->u.user.name, XTF_TRY_LOAD, NULL);
+
+ if (match) {
+ if (match->print && m->u.user.revision == match->revision)
+ match->print(ip, m, numeric);
+ else if (match->print)
+ printf("%s%s ", match->name, unsupported_rev);
+ 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 ipt_entry *fw,
+ const char *targname,
+ unsigned int num,
+ unsigned int format,
+ struct xtc_handle *const handle)
+{
+ const struct xtables_target *target = NULL;
+ const struct xt_entry_target *t;
+ uint8_t flags;
+ char buf[BUFSIZ];
+
+ if (!iptc_is_chain(targname, handle))
+ target = xtables_find_target(targname, XTF_TRY_LOAD);
+ else
+ target = xtables_find_target(XT_STANDARD_TARGET,
+ XTF_LOAD_MUST_SUCCEED);
+
+ t = ipt_get_target((struct ipt_entry *)fw);
+ flags = fw->ip.flags;
+
+ if (format & FMT_LINENUMBERS)
+ printf(FMT("%-4u ", "%u "), num);
+
+ if (!(format & FMT_NOCOUNTS)) {
+ xtables_print_num(fw->counters.pcnt, format);
+ xtables_print_num(fw->counters.bcnt, format);
+ }
+
+ if (!(format & FMT_NOTARGET))
+ printf(FMT("%-9s ", "%s "), targname);
+
+ fputc(fw->ip.invflags & XT_INV_PROTO ? '!' : ' ', stdout);
+ {
+ const char *pname = proto_to_name(fw->ip.proto, format&FMT_NUMERIC);
+ if (pname)
+ printf(FMT("%-5s", "%s "), pname);
+ else
+ printf(FMT("%-5hu", "%hu "), fw->ip.proto);
+ }
+
+ if (format & FMT_OPTIONS) {
+ if (format & FMT_NOTABLE)
+ fputs("opt ", stdout);
+ fputc(fw->ip.invflags & IPT_INV_FRAG ? '!' : '-', stdout);
+ fputc(flags & IPT_F_FRAG ? 'f' : '-', stdout);
+ fputc(' ', stdout);
+ }
+
+ if (format & FMT_VIA) {
+ char iface[IFNAMSIZ+2];
+
+ if (fw->ip.invflags & IPT_INV_VIA_IN) {
+ iface[0] = '!';
+ iface[1] = '\0';
+ }
+ else iface[0] = '\0';
+
+ if (fw->ip.iniface[0] != '\0') {
+ strcat(iface, fw->ip.iniface);
+ }
+ else if (format & FMT_NUMERIC) strcat(iface, "*");
+ else strcat(iface, "any");
+ printf(FMT(" %-6s ","in %s "), iface);
+
+ if (fw->ip.invflags & IPT_INV_VIA_OUT) {
+ iface[0] = '!';
+ iface[1] = '\0';
+ }
+ else iface[0] = '\0';
+
+ if (fw->ip.outiface[0] != '\0') {
+ strcat(iface, fw->ip.outiface);
+ }
+ else if (format & FMT_NUMERIC) strcat(iface, "*");
+ else strcat(iface, "any");
+ printf(FMT("%-6s ","out %s "), iface);
+ }
+
+ fputc(fw->ip.invflags & IPT_INV_SRCIP ? '!' : ' ', stdout);
+ if (fw->ip.smsk.s_addr == 0L && !(format & FMT_NUMERIC))
+ printf(FMT("%-19s ","%s "), "anywhere");
+ else {
+ if (format & FMT_NUMERIC)
+ strcpy(buf, xtables_ipaddr_to_numeric(&fw->ip.src));
+ else
+ strcpy(buf, xtables_ipaddr_to_anyname(&fw->ip.src));
+ strcat(buf, xtables_ipmask_to_numeric(&fw->ip.smsk));
+ printf(FMT("%-19s ","%s "), buf);
+ }
+
+ fputc(fw->ip.invflags & IPT_INV_DSTIP ? '!' : ' ', stdout);
+ if (fw->ip.dmsk.s_addr == 0L && !(format & FMT_NUMERIC))
+ printf(FMT("%-19s ","-> %s"), "anywhere");
+ else {
+ if (format & FMT_NUMERIC)
+ strcpy(buf, xtables_ipaddr_to_numeric(&fw->ip.dst));
+ else
+ strcpy(buf, xtables_ipaddr_to_anyname(&fw->ip.dst));
+ strcat(buf, xtables_ipmask_to_numeric(&fw->ip.dmsk));
+ printf(FMT("%-19s ","-> %s"), buf);
+ }
+
+ if (format & FMT_NOTABLE)
+ fputs(" ", stdout);
+
+#ifdef IPT_F_GOTO
+ if(fw->ip.flags & IPT_F_GOTO)
+ printf("[goto] ");
+#endif
+
+ IPT_MATCH_ITERATE(fw, print_match, &fw->ip, format & FMT_NUMERIC);
+
+ if (target) {
+ if (target->print && t->u.user.revision == target->revision)
+ /* Print the target information. */
+ target->print(&fw->ip, t, format & FMT_NUMERIC);
+ else if (target->print)
+ printf(" %s%s", target->name, unsupported_rev);
+ } 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 ipt_entry *fw,
+ struct xtc_handle *const h)
+{
+ struct xt_entry_target *t;
+
+ t = ipt_get_target((struct ipt_entry *)fw);
+ print_firewall(fw, t->u.user.name, 0, FMT_PRINT_RULE, h);
+}
+
+static int
+append_entry(const xt_chainlabel chain,
+ struct ipt_entry *fw,
+ unsigned int nsaddrs,
+ const struct in_addr saddrs[],
+ const struct in_addr smasks[],
+ unsigned int ndaddrs,
+ const struct in_addr daddrs[],
+ const struct in_addr dmasks[],
+ int verbose,
+ struct xtc_handle *handle)
+{
+ unsigned int i, j;
+ int ret = 1;
+
+ for (i = 0; i < nsaddrs; i++) {
+ fw->ip.src.s_addr = saddrs[i].s_addr;
+ fw->ip.smsk.s_addr = smasks[i].s_addr;
+ for (j = 0; j < ndaddrs; j++) {
+ fw->ip.dst.s_addr = daddrs[j].s_addr;
+ fw->ip.dmsk.s_addr = dmasks[j].s_addr;
+ if (verbose)
+ print_firewall_line(fw, handle);
+ ret &= iptc_append_entry(chain, fw, handle);
+ }
+ }
+
+ return ret;
+}
+
+static int
+replace_entry(const xt_chainlabel chain,
+ struct ipt_entry *fw,
+ unsigned int rulenum,
+ const struct in_addr *saddr, const struct in_addr *smask,
+ const struct in_addr *daddr, const struct in_addr *dmask,
+ int verbose,
+ struct xtc_handle *handle)
+{
+ fw->ip.src.s_addr = saddr->s_addr;
+ fw->ip.dst.s_addr = daddr->s_addr;
+ fw->ip.smsk.s_addr = smask->s_addr;
+ fw->ip.dmsk.s_addr = dmask->s_addr;
+
+ if (verbose)
+ print_firewall_line(fw, handle);
+ return iptc_replace_entry(chain, fw, rulenum, handle);
+}
+
+static int
+insert_entry(const xt_chainlabel chain,
+ struct ipt_entry *fw,
+ unsigned int rulenum,
+ unsigned int nsaddrs,
+ const struct in_addr saddrs[],
+ const struct in_addr smasks[],
+ unsigned int ndaddrs,
+ const struct in_addr daddrs[],
+ const struct in_addr dmasks[],
+ int verbose,
+ struct xtc_handle *handle)
+{
+ unsigned int i, j;
+ int ret = 1;
+
+ for (i = 0; i < nsaddrs; i++) {
+ fw->ip.src.s_addr = saddrs[i].s_addr;
+ fw->ip.smsk.s_addr = smasks[i].s_addr;
+ for (j = 0; j < ndaddrs; j++) {
+ fw->ip.dst.s_addr = daddrs[j].s_addr;
+ fw->ip.dmsk.s_addr = dmasks[j].s_addr;
+ if (verbose)
+ print_firewall_line(fw, handle);
+ ret &= iptc_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 ipt_entry);
+ for (matchp = matches; matchp; matchp = matchp->next)
+ size += XT_ALIGN(sizeof(struct xt_entry_match)) + matchp->match->size;
+
+ mask = xtables_calloc(1, size
+ + XT_ALIGN(sizeof(struct xt_entry_target))
+ + target->size);
+
+ memset(mask, 0xFF, sizeof(struct ipt_entry));
+ mptr = mask + sizeof(struct ipt_entry);
+
+ for (matchp = matches; matchp; matchp = matchp->next) {
+ memset(mptr, 0xFF,
+ XT_ALIGN(sizeof(struct xt_entry_match))
+ + matchp->match->userspacesize);
+ mptr += XT_ALIGN(sizeof(struct xt_entry_match)) + matchp->match->size;
+ }
+
+ memset(mptr, 0xFF,
+ XT_ALIGN(sizeof(struct xt_entry_target))
+ + target->userspacesize);
+
+ return mask;
+}
+
+static int
+delete_entry(const xt_chainlabel chain,
+ struct ipt_entry *fw,
+ unsigned int nsaddrs,
+ const struct in_addr saddrs[],
+ const struct in_addr smasks[],
+ unsigned int ndaddrs,
+ const struct in_addr daddrs[],
+ const struct in_addr dmasks[],
+ int verbose,
+ struct xtc_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->ip.src.s_addr = saddrs[i].s_addr;
+ fw->ip.smsk.s_addr = smasks[i].s_addr;
+ for (j = 0; j < ndaddrs; j++) {
+ fw->ip.dst.s_addr = daddrs[j].s_addr;
+ fw->ip.dmsk.s_addr = dmasks[j].s_addr;
+ if (verbose)
+ print_firewall_line(fw, handle);
+ ret &= iptc_delete_entry(chain, fw, mask, handle);
+ }
+ }
+ free(mask);
+
+ return ret;
+}
+
+static int
+check_entry(const xt_chainlabel chain, struct ipt_entry *fw,
+ unsigned int nsaddrs, const struct in_addr *saddrs,
+ const struct in_addr *smasks, unsigned int ndaddrs,
+ const struct in_addr *daddrs, const struct in_addr *dmasks,
+ bool verbose, struct xtc_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->ip.src.s_addr = saddrs[i].s_addr;
+ fw->ip.smsk.s_addr = smasks[i].s_addr;
+ for (j = 0; j < ndaddrs; j++) {
+ fw->ip.dst.s_addr = daddrs[j].s_addr;
+ fw->ip.dmsk.s_addr = dmasks[j].s_addr;
+ if (verbose)
+ print_firewall_line(fw, handle);
+ ret &= iptc_check_entry(chain, fw, mask, handle);
+ }
+ }
+
+ free(mask);
+ return ret;
+}
+
+int
+for_each_chain4(int (*fn)(const xt_chainlabel, int, struct xtc_handle *),
+ int verbose, int builtinstoo, struct xtc_handle *handle)
+{
+ int ret = 1;
+ const char *chain;
+ char *chains;
+ unsigned int i, chaincount = 0;
+
+ chain = iptc_first_chain(handle);
+ while (chain) {
+ chaincount++;
+ chain = iptc_next_chain(handle);
+ }
+
+ chains = xtables_malloc(sizeof(xt_chainlabel) * chaincount);
+ i = 0;
+ chain = iptc_first_chain(handle);
+ while (chain) {
+ strcpy(chains + i*sizeof(xt_chainlabel), chain);
+ i++;
+ chain = iptc_next_chain(handle);
+ }
+
+ for (i = 0; i < chaincount; i++) {
+ if (!builtinstoo
+ && iptc_builtin(chains + i*sizeof(xt_chainlabel),
+ handle) == 1)
+ continue;
+ ret &= fn(chains + i*sizeof(xt_chainlabel), verbose, handle);
+ }
+
+ free(chains);
+ return ret;
+}
+
+int
+flush_entries4(const xt_chainlabel chain, int verbose,
+ struct xtc_handle *handle)
+{
+ if (!chain)
+ return for_each_chain4(flush_entries4, verbose, 1, handle);
+
+ if (verbose)
+ fprintf(stdout, "Flushing chain `%s'\n", chain);
+ return iptc_flush_entries(chain, handle);
+}
+
+static int
+zero_entries(const xt_chainlabel chain, int verbose,
+ struct xtc_handle *handle)
+{
+ if (!chain)
+ return for_each_chain4(zero_entries, verbose, 1, handle);
+
+ if (verbose)
+ fprintf(stdout, "Zeroing chain `%s'\n", chain);
+ return iptc_zero_entries(chain, handle);
+}
+
+int
+delete_chain4(const xt_chainlabel chain, int verbose,
+ struct xtc_handle *handle)
+{
+ if (!chain)
+ return for_each_chain4(delete_chain4, verbose, 0, handle);
+
+ if (verbose)
+ fprintf(stdout, "Deleting chain `%s'\n", chain);
+ return iptc_delete_chain(chain, handle);
+}
+
+static int
+list_entries(const xt_chainlabel chain, int rulenum, int verbose, int numeric,
+ int expanded, int linenumbers, struct xtc_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 = iptc_first_chain(handle);
+ this;
+ this = iptc_next_chain(handle)) {
+ const struct ipt_entry *i;
+ unsigned int num;
+
+ if (chain && strcmp(chain, this) != 0)
+ continue;
+
+ if (found) printf("\n");
+
+ if (!rulenum)
+ print_header(format, this, handle);
+ i = iptc_first_rule(this, handle);
+
+ num = 0;
+ while (i) {
+ num++;
+ if (!rulenum || num == rulenum)
+ print_firewall(i,
+ iptc_get_target(i, handle),
+ num,
+ format,
+ handle);
+ i = iptc_next_rule(i, handle);
+ }
+ found = 1;
+ }
+
+ errno = ENOENT;
+ return found;
+}
+
+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);
+ }
+}
+
+#define IP_PARTS_NATIVE(n) \
+(unsigned int)((n)>>24)&0xFF, \
+(unsigned int)((n)>>16)&0xFF, \
+(unsigned int)((n)>>8)&0xFF, \
+(unsigned int)((n)&0xFF)
+
+#define IP_PARTS(n) IP_PARTS_NATIVE(ntohl(n))
+
+/* 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;
+ }
+ }
+}
+
+static int print_match_save(const struct xt_entry_match *e,
+ const struct ipt_ip *ip)
+{
+ const struct xtables_match *match =
+ xtables_find_match(e->u.user.name, XTF_TRY_LOAD, NULL);
+
+ if (match) {
+ printf(" -m %s",
+ match->alias ? match->alias(e) : e->u.user.name);
+
+ /* some matches don't provide a save function */
+ if (match->save && e->u.user.revision == match->revision)
+ match->save(ip, e);
+ else if (match->save)
+ printf(unsupported_rev);
+ } 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 necessary. */
+static void print_ip(const char *prefix, uint32_t ip,
+ uint32_t mask, int invert)
+{
+ uint32_t bits, hmask = ntohl(mask);
+ int i;
+
+ if (!mask && !ip && !invert)
+ return;
+
+ printf("%s %s %u.%u.%u.%u",
+ invert ? " !" : "",
+ prefix,
+ IP_PARTS(ip));
+
+ if (mask == 0xFFFFFFFFU) {
+ printf("/32");
+ return;
+ }
+
+ i = 32;
+ bits = 0xFFFFFFFEU;
+ while (--i >= 0 && hmask != bits)
+ bits <<= 1;
+ if (i >= 0)
+ printf("/%u", i);
+ else
+ printf("/%u.%u.%u.%u", IP_PARTS(mask));
+}
+
+/* We want this to be readable, so only print out necessary fields.
+ * Because that's the kind of world I want to live in.
+ */
+void print_rule4(const struct ipt_entry *e,
+ struct xtc_handle *h, const char *chain, int counters)
+{
+ const struct xt_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->ip.src.s_addr,e->ip.smsk.s_addr,
+ e->ip.invflags & IPT_INV_SRCIP);
+
+ print_ip("-d", e->ip.dst.s_addr, e->ip.dmsk.s_addr,
+ e->ip.invflags & IPT_INV_DSTIP);
+
+ print_iface('i', e->ip.iniface, e->ip.iniface_mask,
+ e->ip.invflags & IPT_INV_VIA_IN);
+
+ print_iface('o', e->ip.outiface, e->ip.outiface_mask,
+ e->ip.invflags & IPT_INV_VIA_OUT);
+
+ print_proto(e->ip.proto, e->ip.invflags & XT_INV_PROTO);
+
+ if (e->ip.flags & IPT_F_FRAG)
+ printf("%s -f",
+ e->ip.invflags & IPT_INV_FRAG ? " !" : "");
+
+ /* Print matchinfo part */
+ if (e->target_offset) {
+ IPT_MATCH_ITERATE(e, print_match_save, &e->ip);
+ }
+
+ /* 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 and targinfo part */
+ target_name = iptc_get_target(e, h);
+ t = ipt_get_target((struct ipt_entry *)e);
+ if (t->u.user.name[0]) {
+ const 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);
+ }
+
+ printf(" -j %s", target->alias ? target->alias(t) : target_name);
+ if (target->save && t->u.user.revision == target->revision)
+ target->save(&e->ip, t);
+ else if (target->save)
+ printf(unsupported_rev);
+ else {
+ /* If the target size is greater than xt_entry_target
+ * there is something to be saved, we just don't know
+ * how to print it */
+ if (t->u.target_size !=
+ sizeof(struct xt_entry_target)) {
+ fprintf(stderr, "Target `%s' is missing "
+ "save function\n",
+ t->u.user.name);
+ exit(1);
+ }
+ }
+ } else if (target_name && (*target_name != '\0'))
+#ifdef IPT_F_GOTO
+ printf(" -%c %s", e->ip.flags & IPT_F_GOTO ? 'g' : 'j', target_name);
+#else
+ printf(" -j %s", target_name);
+#endif
+
+ printf("\n");
+}
+
+static int
+list_rules(const xt_chainlabel chain, int rulenum, int counters,
+ struct xtc_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 = iptc_first_chain(handle);
+ this;
+ this = iptc_next_chain(handle)) {
+ if (chain && strcmp(this, chain) != 0)
+ continue;
+
+ if (iptc_builtin(this, handle)) {
+ struct xt_counters count;
+ printf("-P %s %s", this, iptc_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 = iptc_first_chain(handle);
+ this;
+ this = iptc_next_chain(handle)) {
+ const struct ipt_entry *e;
+ int num = 0;
+
+ if (chain && strcmp(this, chain) != 0)
+ continue;
+
+ /* Dump out rules */
+ e = iptc_first_rule(this, handle);
+ while(e) {
+ num++;
+ if (!rulenum || num == rulenum)
+ print_rule4(e, handle, this, counters);
+ e = iptc_next_rule(e, handle);
+ }
+ found = 1;
+ }
+
+ errno = ENOENT;
+ return found;
+}
+
+static struct ipt_entry *
+generate_entry(const struct ipt_entry *fw,
+ struct xtables_rule_match *matches,
+ struct xt_entry_target *target)
+{
+ unsigned int size;
+ struct xtables_rule_match *matchp;
+ struct ipt_entry *e;
+
+ size = sizeof(struct ipt_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 command_jump(struct iptables_command_state *cs)
+{
+ size_t size;
+
+ set_option(&cs->options, OPT_JUMP, &cs->fw.ip.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 xt_entry_target))
+ + cs->target->size;
+
+ cs->target->t = xtables_calloc(1, size);
+ cs->target->t->u.target_size = size;
+ if (cs->target->real_name == NULL) {
+ strcpy(cs->target->t->u.user.name, cs->jumpto);
+ } else {
+ /* Alias support for userspace side */
+ strcpy(cs->target->t->u.user.name, cs->target->real_name);
+ if (!(cs->target->ext_flags & XTABLES_EXT_ALIAS))
+ fprintf(stderr, "Notice: The %s target is converted into %s target "
+ "in rule listing and saving.\n",
+ cs->jumpto, cs->target->real_name);
+ }
+ cs->target->t->u.user.revision = cs->target->revision;
+
+ xs_init_target(cs->target);
+
+ if (cs->target->x6_options != NULL)
+ opts = xtables_options_xfrm(iptables_globals.orig_opts, opts,
+ cs->target->x6_options,
+ &cs->target->option_offset);
+ else
+ opts = xtables_merge_options(iptables_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 xt_entry_match)) + m->size;
+ m->m = xtables_calloc(1, size);
+ m->m->u.match_size = size;
+ if (m->real_name == NULL) {
+ strcpy(m->m->u.user.name, m->name);
+ } else {
+ strcpy(m->m->u.user.name, m->real_name);
+ if (!(m->ext_flags & XTABLES_EXT_ALIAS))
+ fprintf(stderr, "Notice: the %s match is converted into %s match "
+ "in rule listing and saving.\n", m->name, m->real_name);
+ }
+ m->m->u.user.revision = m->revision;
+
+ xs_init_match(m);
+ if (m == m->next)
+ return;
+ /* Merge options for non-cloned matches */
+ if (m->x6_options != NULL)
+ opts = xtables_options_xfrm(iptables_globals.orig_opts, opts,
+ m->x6_options, &m->option_offset);
+ else if (m->extra_opts != NULL)
+ opts = xtables_merge_options(iptables_globals.orig_opts, opts,
+ m->extra_opts, &m->option_offset);
+ if (opts == NULL)
+ xtables_error(OTHER_PROBLEM, "can't alloc memory!");
+}
+
+int do_command4(int argc, char *argv[], char **table,
+ struct xtc_handle **handle, bool restore)
+{
+ struct iptables_command_state cs;
+ struct ipt_entry *e = NULL;
+ unsigned int nsaddrs = 0, ndaddrs = 0;
+ struct in_addr *saddrs = NULL, *smasks = NULL;
+ struct in_addr *daddrs = NULL, *dmasks = NULL;
+ struct timeval wait_interval = {
+ .tv_sec = 1,
+ };
+ bool wait_interval_set = false;
+ int verbose = 0;
+ int wait = 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_command4 gets called
+ * a second time */
+ optind = 0;
+
+ /* clear mflags in case do_command4 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:fbvw::W::nt: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':
+ parse_chain(optarg);
+ 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];
+
+ /* iptables -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':
+ set_option(&cs.options, OPT_PROTOCOL, &cs.fw.ip.invflags,
+ cs.invert);
+
+ /* Canonicalize into lower case */
+ for (cs.protocol = optarg; *cs.protocol; cs.protocol++)
+ *cs.protocol = tolower(*cs.protocol);
+
+ cs.protocol = optarg;
+ cs.fw.ip.proto = xtables_parse_protocol(cs.protocol);
+
+ if (cs.fw.ip.proto == 0
+ && (cs.fw.ip.invflags & XT_INV_PROTO))
+ xtables_error(PARAMETER_PROBLEM,
+ "rule would never match protocol");
+ break;
+
+ case 's':
+ set_option(&cs.options, OPT_SOURCE, &cs.fw.ip.invflags,
+ cs.invert);
+ shostnetworkmask = optarg;
+ break;
+
+ case 'd':
+ set_option(&cs.options, OPT_DESTINATION, &cs.fw.ip.invflags,
+ cs.invert);
+ dhostnetworkmask = optarg;
+ break;
+
+#ifdef IPT_F_GOTO
+ case 'g':
+ set_option(&cs.options, OPT_JUMP, &cs.fw.ip.invflags,
+ cs.invert);
+ cs.fw.ip.flags |= IPT_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");
+ set_option(&cs.options, OPT_VIANAMEIN, &cs.fw.ip.invflags,
+ cs.invert);
+ xtables_parse_interface(optarg,
+ cs.fw.ip.iniface,
+ cs.fw.ip.iniface_mask);
+ break;
+
+ case 'o':
+ if (*optarg == '\0')
+ xtables_error(PARAMETER_PROBLEM,
+ "Empty interface is likely to be "
+ "undesired");
+ set_option(&cs.options, OPT_VIANAMEOUT, &cs.fw.ip.invflags,
+ cs.invert);
+ xtables_parse_interface(optarg,
+ cs.fw.ip.outiface,
+ cs.fw.ip.outiface_mask);
+ break;
+
+ case 'f':
+ set_option(&cs.options, OPT_FRAGMENT, &cs.fw.ip.invflags,
+ cs.invert);
+ cs.fw.ip.flags |= IPT_F_FRAG;
+ break;
+
+ case 'v':
+ if (!verbose)
+ set_option(&cs.options, OPT_VERBOSE,
+ &cs.fw.ip.invflags, cs.invert);
+ verbose++;
+ break;
+
+ case 'w':
+ if (restore) {
+ xtables_error(PARAMETER_PROBLEM,
+ "You cannot use `-w' from "
+ "iptables-restore");
+ }
+ wait = -1;
+ if (optarg) {
+ if (sscanf(optarg, "%i", &wait) != 1)
+ xtables_error(PARAMETER_PROBLEM,
+ "wait seconds not numeric");
+ } else if (optind < argc && argv[optind][0] != '-'
+ && argv[optind][0] != '!')
+ if (sscanf(argv[optind++], "%i", &wait) != 1)
+ xtables_error(PARAMETER_PROBLEM,
+ "wait seconds not numeric");
+ break;
+
+ case 'W':
+ if (restore) {
+ xtables_error(PARAMETER_PROBLEM,
+ "You cannot use `-W' from "
+ "iptables-restore");
+ }
+ if (optarg)
+ parse_wait_interval(optarg, &wait_interval);
+ else if (optind < argc &&
+ argv[optind][0] != '-' &&
+ argv[optind][0] != '!')
+ parse_wait_interval(argv[optind++],
+ &wait_interval);
+
+ wait_interval_set = true;
+ break;
+
+ case 'm':
+ command_match(&cs);
+ break;
+
+ case 'n':
+ set_option(&cs.options, OPT_NUMERIC, &cs.fw.ip.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.fw.ip.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.fw.ip.invflags,
+ cs.invert);
+ break;
+
+ case 'M':
+ xtables_modprobe_program = optarg;
+ break;
+
+ case 'c':
+
+ set_option(&cs.options, OPT_COUNTERS, &cs.fw.ip.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.fw.counters.pcnt = cnt;
+
+ if (sscanf(bcnt, "%llu", &cnt) != 1)
+ xtables_error(PARAMETER_PROBLEM,
+ "-%c byte counter not numeric",
+ opt2char(OPT_COUNTERS));
+ cs.fw.counters.bcnt = cnt;
+ break;
+
+ case '4':
+ /* This is indeed the IPv4 iptables */
+ break;
+
+ case '6':
+ /* This is not the IPv6 ip6tables */
+ if (line != -1)
+ return 1; /* success: line ignored */
+ fprintf(stderr, "This is the IPv4 version of iptables.\n");
+ exit_tryhelp(2);
+
+ 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:
+ if (command_default(&cs, &iptables_globals) == 1)
+ /* cf. ip6tables.c */
+ continue;
+ break;
+ }
+ cs.invert = FALSE;
+ }
+
+ if (!wait && wait_interval_set)
+ xtables_error(PARAMETER_PROBLEM,
+ "--wait-interval only makes sense with --wait\n");
+
+ if (strcmp(*table, "nat") == 0 &&
+ ((policy != NULL && strcmp(policy, "DROP") == 0) ||
+ (cs.jumpto != NULL && strcmp(cs.jumpto, "DROP") == 0)))
+ xtables_error(PARAMETER_PROBLEM,
+ "\nThe \"nat\" table is not intended for filtering, "
+ "the use of DROP is therefore inhibited.\n\n");
+
+ 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 = "0.0.0.0/0";
+ if (!(cs.options & OPT_SOURCE))
+ shostnetworkmask = "0.0.0.0/0";
+ }
+
+ if (shostnetworkmask)
+ xtables_ipparse_multiple(shostnetworkmask, &saddrs,
+ &smasks, &nsaddrs);
+
+ if (dhostnetworkmask)
+ xtables_ipparse_multiple(dhostnetworkmask, &daddrs,
+ &dmasks, &ndaddrs);
+
+ if ((nsaddrs > 1 || ndaddrs > 1) &&
+ (cs.fw.ip.invflags & (IPT_INV_SRCIP | IPT_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);
+
+ /* Attempt to acquire the xtables lock */
+ if (!restore && !xtables_lock(wait, &wait_interval)) {
+ fprintf(stderr, "Another app is currently holding the xtables lock. ");
+ if (wait == 0)
+ fprintf(stderr, "Perhaps you want to use the -w option?\n");
+ else
+ fprintf(stderr, "Stopped waiting after %ds.\n", wait);
+ xtables_free_opts(1);
+ exit(RESOURCE_PROBLEM);
+ }
+
+ /* only allocate handle if we weren't called with a handle */
+ if (!*handle)
+ *handle = iptc_init(*table);
+
+ /* try to insmod the module if iptc_init failed */
+ if (!*handle && xtables_load_ko(xtables_modprobe_program, false) != -1)
+ *handle = iptc_init(*table);
+
+ if (!*handle)
+ xtables_error(VERSION_PROBLEM,
+ "can't initialize iptables table `%s': %s",
+ *table, iptc_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 && iptc_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
+ || iptc_is_chain(cs.jumpto, *handle))) {
+ size_t size;
+
+ cs.target = xtables_find_target(XT_STANDARD_TARGET,
+ XTF_LOAD_MUST_SUCCEED);
+
+ size = sizeof(struct xt_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 (!iptc_is_chain(cs.jumpto, *handle))
+ cs.target->t->u.user.revision = cs.target->revision;
+ xs_init_target(cs.target);
+ }
+
+ if (!cs.target) {
+ /* It is no chain, and we can't load a plugin.
+ * We cannot know if the plugin is corrupt, non
+ * existent OR if the user just misspelled a
+ * chain.
+ */
+#ifdef IPT_F_GOTO
+ if (cs.fw.ip.flags & IPT_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.fw, 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 = iptc_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_entries4(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 = iptc_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 = iptc_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 = iptc_zero_counter(chain, rulenum, *handle);
+ break;
+ case CMD_NEW_CHAIN:
+ ret = iptc_create_chain(chain, *handle);
+ break;
+ case CMD_DELETE_CHAIN:
+ ret = delete_chain4(chain, cs.options&OPT_VERBOSE, *handle);
+ break;
+ case CMD_RENAME_CHAIN:
+ ret = iptc_rename_chain(chain, newname, *handle);
+ break;
+ case CMD_SET_POLICY:
+ ret = iptc_set_policy(chain, policy, cs.options&OPT_COUNTERS ? &cs.fw.counters : NULL, *handle);
+ break;
+ default:
+ /* We should never reach this... */
+ exit_tryhelp(2);
+ }
+
+ if (verbose > 1)
+ dump_entries(*handle);
+
+ xtables_rule_matches_free(&cs.matches);
+
+ if (e != NULL) {
+ free(e);
+ e = NULL;
+ }
+
+ free(saddrs);
+ free(smasks);
+ free(daddrs);
+ free(dmasks);
+ xtables_free_opts(1);
+
+ return ret;
+}
diff --git a/iptables/xshared.c b/iptables/xshared.c
index 9497133..252e7d2 100644
--- a/iptables/xshared.c
+++ b/iptables/xshared.c
@@ -15,6 +15,9 @@
#elif XTABLES_VERSION_CODE == 11
#include "xshared.c-v1.6.0"
+#elif XTABLES_VERSION_CODE == 12
+#include "xshared.c-v1.6.1"
+
#else
#error "The libxtables is newer than this package support and know of - Sorry!"
#error " Please inform the package author of this issue, thanks! "
diff --git a/iptables/xshared.c-v1.6.1 b/iptables/xshared.c-v1.6.1
new file mode 100644
index 0000000..cccb8ae
--- /dev/null
+++ b/iptables/xshared.c-v1.6.1
@@ -0,0 +1,306 @@
+#include <getopt.h>
+#include <libgen.h>
+#include <netdb.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/file.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <xtables.h>
+#include <math.h>
+#include "xshared.h"
+
+#define XT_LOCK_NAME "/run/xtables.lock"
+#define BASE_MICROSECONDS 100000
+
+/*
+ * Print out any special helps. A user might like to be able to add a --help
+ * to the commandline, and see expected results. So we call help for all
+ * specified matches and targets.
+ */
+void print_extension_helps(const struct xtables_target *t,
+ const struct xtables_rule_match *m)
+{
+ for (; t != NULL; t = t->next) {
+ if (t->used) {
+ printf("\n");
+ if (t->help == NULL)
+ printf("%s does not take any options\n",
+ t->name);
+ else
+ t->help();
+ }
+ }
+ for (; m != NULL; m = m->next) {
+ printf("\n");
+ if (m->match->help == NULL)
+ printf("%s does not take any options\n",
+ m->match->name);
+ else
+ m->match->help();
+ }
+}
+
+const char *
+proto_to_name(uint8_t proto, int nolookup)
+{
+ unsigned int i;
+
+ if (proto && !nolookup) {
+ struct protoent *pent = getprotobynumber(proto);
+ if (pent)
+ return pent->p_name;
+ }
+
+ for (i = 0; xtables_chain_protos[i].name != NULL; ++i)
+ if (xtables_chain_protos[i].num == proto)
+ return xtables_chain_protos[i].name;
+
+ return NULL;
+}
+
+static struct xtables_match *
+find_proto(const char *pname, enum xtables_tryload tryload,
+ int nolookup, struct xtables_rule_match **matches)
+{
+ unsigned int proto;
+
+ if (xtables_strtoui(pname, NULL, &proto, 0, UINT8_MAX)) {
+ const char *protoname = proto_to_name(proto, nolookup);
+
+ if (protoname)
+ return xtables_find_match(protoname, tryload, matches);
+ } else
+ return xtables_find_match(pname, tryload, matches);
+
+ return NULL;
+}
+
+/*
+ * Some explanations (after four different bugs in 3 different releases): If
+ * we encounter a parameter, that has not been parsed yet, it's not an option
+ * of an explicitly loaded match or a target. However, we support implicit
+ * loading of the protocol match extension. '-p tcp' means 'l4 proto 6' and at
+ * the same time 'load tcp protocol match on demand if we specify --dport'.
+ *
+ * To make this work, we need to make sure:
+ * - the parameter has not been parsed by a match (m above)
+ * - a protocol has been specified
+ * - the protocol extension has not been loaded yet, or is loaded and unused
+ * [think of ip6tables-restore!]
+ * - the protocol extension can be successively loaded
+ */
+static bool should_load_proto(struct iptables_command_state *cs)
+{
+ if (cs->protocol == NULL)
+ return false;
+ if (find_proto(cs->protocol, XTF_DONT_LOAD,
+ cs->options & OPT_NUMERIC, NULL) == NULL)
+ return true;
+ return !cs->proto_used;
+}
+
+struct xtables_match *load_proto(struct iptables_command_state *cs)
+{
+ if (!should_load_proto(cs))
+ return NULL;
+ return find_proto(cs->protocol, XTF_TRY_LOAD,
+ cs->options & OPT_NUMERIC, &cs->matches);
+}
+
+int command_default(struct iptables_command_state *cs,
+ struct xtables_globals *gl)
+{
+ struct xtables_rule_match *matchp;
+ struct xtables_match *m;
+
+ if (cs->target != NULL &&
+ (cs->target->parse != NULL || cs->target->x6_parse != NULL) &&
+ cs->c >= cs->target->option_offset &&
+ cs->c < cs->target->option_offset + XT_OPTION_OFFSET_SCALE) {
+ xtables_option_tpcall(cs->c, cs->argv, cs->invert,
+ cs->target, &cs->fw);
+ return 0;
+ }
+
+ for (matchp = cs->matches; matchp; matchp = matchp->next) {
+ m = matchp->match;
+
+ if (matchp->completed ||
+ (m->x6_parse == NULL && m->parse == NULL))
+ continue;
+ if (cs->c < matchp->match->option_offset ||
+ cs->c >= matchp->match->option_offset + XT_OPTION_OFFSET_SCALE)
+ continue;
+ xtables_option_mpcall(cs->c, cs->argv, cs->invert, m, &cs->fw);
+ return 0;
+ }
+
+ /* Try loading protocol */
+ m = load_proto(cs);
+ if (m != NULL) {
+ size_t size;
+
+ cs->proto_used = 1;
+
+ size = XT_ALIGN(sizeof(struct xt_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;
+ xs_init_match(m);
+
+ if (m->x6_options != NULL)
+ gl->opts = xtables_options_xfrm(gl->orig_opts,
+ gl->opts,
+ m->x6_options,
+ &m->option_offset);
+ else
+ gl->opts = xtables_merge_options(gl->orig_opts,
+ gl->opts,
+ m->extra_opts,
+ &m->option_offset);
+ if (gl->opts == NULL)
+ xtables_error(OTHER_PROBLEM, "can't alloc memory!");
+ optind--;
+ /* Indicate to rerun getopt *immediately* */
+ return 1;
+ }
+
+ if (cs->c == ':')
+ xtables_error(PARAMETER_PROBLEM, "option \"%s\" "
+ "requires an argument", cs->argv[optind-1]);
+ if (cs->c == '?')
+ xtables_error(PARAMETER_PROBLEM, "unknown option "
+ "\"%s\"", cs->argv[optind-1]);
+ xtables_error(PARAMETER_PROBLEM, "Unknown arg \"%s\"", optarg);
+ return 0;
+}
+
+static mainfunc_t subcmd_get(const char *cmd, const struct subcommand *cb)
+{
+ for (; cb->name != NULL; ++cb)
+ if (strcmp(cb->name, cmd) == 0)
+ return cb->main;
+ return NULL;
+}
+
+int subcmd_main(int argc, char **argv, const struct subcommand *cb)
+{
+ const char *cmd = basename(*argv);
+ mainfunc_t f = subcmd_get(cmd, cb);
+
+ if (f == NULL && argc > 1) {
+ /*
+ * Unable to find a main method for our command name?
+ * Let's try again with the first argument!
+ */
+ ++argv;
+ --argc;
+ f = subcmd_get(*argv, cb);
+ }
+
+ /* now we should have a valid function pointer */
+ if (f != NULL)
+ return f(argc, argv);
+
+ fprintf(stderr, "ERROR: No valid subcommand given.\nValid subcommands:\n");
+ for (; cb->name != NULL; ++cb)
+ fprintf(stderr, " * %s\n", cb->name);
+ exit(EXIT_FAILURE);
+}
+
+void xs_init_target(struct xtables_target *target)
+{
+ if (target->udata_size != 0) {
+ free(target->udata);
+ target->udata = calloc(1, target->udata_size);
+ if (target->udata == NULL)
+ xtables_error(RESOURCE_PROBLEM, "malloc");
+ }
+ if (target->init != NULL)
+ target->init(target->t);
+}
+
+void xs_init_match(struct xtables_match *match)
+{
+ if (match->udata_size != 0) {
+ /*
+ * As soon as a subsequent instance of the same match
+ * is used, e.g. "-m time -m time", the first instance
+ * is no longer reachable anyway, so we can free udata.
+ * Same goes for target.
+ */
+ free(match->udata);
+ match->udata = calloc(1, match->udata_size);
+ if (match->udata == NULL)
+ xtables_error(RESOURCE_PROBLEM, "malloc");
+ }
+ if (match->init != NULL)
+ match->init(match->m);
+}
+
+bool xtables_lock(int wait, struct timeval *wait_interval)
+{
+ struct timeval time_left, wait_time, waited_time;
+ int fd, i = 0;
+
+ time_left.tv_sec = wait;
+ time_left.tv_usec = 0;
+ waited_time.tv_sec = 0;
+ waited_time.tv_usec = 0;
+
+ fd = open(XT_LOCK_NAME, O_CREAT, 0600);
+ if (fd < 0)
+ return true;
+
+ while (1) {
+ if (flock(fd, LOCK_EX | LOCK_NB) == 0)
+ return true;
+ if (++i % 10 == 0) {
+ if (wait != -1)
+ fprintf(stderr, "Another app is currently holding the xtables lock; "
+ "still %lds %ldus time ahead to have a chance to grab the lock...\n",
+ time_left.tv_sec, time_left.tv_usec);
+ else
+ fprintf(stderr, "Another app is currently holding the xtables lock; "
+ "waiting for it to exit...\n");
+ }
+
+ wait_time = *wait_interval;
+ select(0, NULL, NULL, NULL, &wait_time);
+ if (wait == -1)
+ continue;
+
+ timeradd(&waited_time, wait_interval, &waited_time);
+ timersub(&time_left, wait_interval, &time_left);
+ if (!timerisset(&time_left))
+ return false;
+ }
+}
+
+void parse_wait_interval(const char *str, struct timeval *wait_interval)
+{
+ unsigned int usec;
+ int ret;
+
+ ret = sscanf(str, "%u", &usec);
+ if (ret == 1) {
+ if (usec > 999999)
+ xtables_error(PARAMETER_PROBLEM,
+ "too long usec wait %u > 999999 usec",
+ usec);
+
+ wait_interval->tv_sec = 0;
+ wait_interval->tv_usec = usec;
+ return;
+ }
+ xtables_error(PARAMETER_PROBLEM, "wait interval not numeric");
+}
diff --git a/iptables/xshared.h b/iptables/xshared.h
index 79be00a..bc7635f 100644
--- a/iptables/xshared.h
+++ b/iptables/xshared.h
@@ -18,6 +18,10 @@
#include "xshared.h-v1.6.0"
#include <libiptc/xtcshared.h>
+#elif XTABLES_VERSION_CODE == 12
+#include "xshared.h-v1.6.1"
+#include <libiptc/xtcshared.h>
+
#else
#error "The libxtables is newer than this package support and know of - Sorry!"
#error " Please inform the package author of this issue, thanks! "
diff --git a/iptables/xshared.h-v1.6.1 b/iptables/xshared.h-v1.6.1
new file mode 100644
index 0000000..18b1cf3
--- /dev/null
+++ b/iptables/xshared.h-v1.6.1
@@ -0,0 +1,95 @@
+#ifndef IPTABLES_XSHARED_H
+#define IPTABLES_XSHARED_H 1
+
+#include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+
+enum {
+ OPT_NONE = 0,
+ OPT_NUMERIC = 1 << 0,
+ OPT_SOURCE = 1 << 1,
+ OPT_DESTINATION = 1 << 2,
+ OPT_PROTOCOL = 1 << 3,
+ OPT_JUMP = 1 << 4,
+ OPT_VERBOSE = 1 << 5,
+ OPT_EXPANDED = 1 << 6,
+ OPT_VIANAMEIN = 1 << 7,
+ OPT_VIANAMEOUT = 1 << 8,
+ OPT_LINENUMBERS = 1 << 9,
+ OPT_COUNTERS = 1 << 10,
+};
+
+struct xtables_globals;
+struct xtables_rule_match;
+struct xtables_target;
+
+/**
+ * xtables_afinfo - protocol family dependent information
+ * @kmod: kernel module basename (e.g. "ip_tables")
+ * @proc_exists: file which exists in procfs when module already loaded
+ * @libprefix: prefix of .so library name (e.g. "libipt_")
+ * @family: nfproto family
+ * @ipproto: used by setsockopt (e.g. IPPROTO_IP)
+ * @so_rev_match: optname to check revision support of match
+ * @so_rev_target: optname to check revision support of target
+ */
+struct xtables_afinfo {
+ const char *kmod;
+ const char *proc_exists;
+ const char *libprefix;
+ uint8_t family;
+ uint8_t ipproto;
+ int so_rev_match;
+ int so_rev_target;
+};
+
+struct iptables_command_state {
+ union {
+ struct ipt_entry fw;
+ struct ip6t_entry fw6;
+ };
+ int invert;
+ int c;
+ unsigned int options;
+ struct xtables_rule_match *matches;
+ struct xtables_target *target;
+ struct xt_counters counters;
+ char *protocol;
+ int proto_used;
+ const char *jumpto;
+ char **argv;
+ bool restore;
+};
+
+typedef int (*mainfunc_t)(int, char **);
+
+struct subcommand {
+ const char *name;
+ mainfunc_t main;
+};
+
+enum {
+ XT_OPTION_OFFSET_SCALE = 256,
+};
+
+extern void print_extension_helps(const struct xtables_target *,
+ const struct xtables_rule_match *);
+extern const char *proto_to_name(uint8_t, int);
+extern int command_default(struct iptables_command_state *,
+ struct xtables_globals *);
+extern struct xtables_match *load_proto(struct iptables_command_state *);
+extern int subcmd_main(int, char **, const struct subcommand *);
+extern void xs_init_target(struct xtables_target *);
+extern void xs_init_match(struct xtables_match *);
+bool xtables_lock(int wait, struct timeval *wait_interval);
+
+void parse_wait_interval(const char *str, struct timeval *wait_interval);
+
+extern const struct xtables_afinfo *afinfo;
+
+#endif /* IPTABLES_XSHARED_H */
--
2.7.4