Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 1 | /* Code to restore the iptables state, from file by iptables-save. |
Harald Welte | 10a907f | 2002-08-07 09:07:41 +0000 | [diff] [blame] | 2 | * (C) 2000-2002 by Harald Welte <laforge@gnumonks.org> |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 3 | * based on previous code from Rusty Russell <rusty@linuxcare.com.au> |
| 4 | * |
Harald Welte | 10a907f | 2002-08-07 09:07:41 +0000 | [diff] [blame] | 5 | * This code is distributed under the terms of GNU GPL v2 |
Harald Welte | ccd49e5 | 2001-01-23 22:54:34 +0000 | [diff] [blame] | 6 | * |
Martin Josefsson | 357d59d | 2004-12-27 19:49:28 +0000 | [diff] [blame] | 7 | * $Id$ |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 10 | #include <getopt.h> |
| 11 | #include <sys/errno.h> |
| 12 | #include <string.h> |
| 13 | #include <stdio.h> |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 14 | #include <stdlib.h> |
| 15 | #include "iptables.h" |
Yasuyuki KOZAKAI | 0b82e8e | 2007-07-24 05:47:40 +0000 | [diff] [blame] | 16 | #include "xtables.h" |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 17 | #include "libiptc/libiptc.h" |
| 18 | |
| 19 | #ifdef DEBUG |
Harald Welte | c45c315 | 2000-12-06 08:11:24 +0000 | [diff] [blame] | 20 | #define DEBUGP(x, args...) fprintf(stderr, x, ## args) |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 21 | #else |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 22 | #define DEBUGP(x, args...) |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 23 | #endif |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 24 | |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 25 | static int binary = 0, counters = 0, verbose = 0, noflush = 0; |
| 26 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 27 | /* Keeping track of external matches and targets. */ |
| 28 | static struct option options[] = { |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 29 | { "binary", 0, 0, 'b' }, |
| 30 | { "counters", 0, 0, 'c' }, |
Martin Josefsson | ec78971 | 2004-01-31 19:28:13 +0000 | [diff] [blame] | 31 | { "verbose", 0, 0, 'v' }, |
Martin Josefsson | bb2f68a | 2004-02-01 22:03:27 +0000 | [diff] [blame] | 32 | { "test", 0, 0, 't' }, |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 33 | { "help", 0, 0, 'h' }, |
| 34 | { "noflush", 0, 0, 'n'}, |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 35 | { "modprobe", 1, 0, 'M'}, |
Peter Warasin | b9cde3a | 2007-11-05 19:35:31 +0000 | [diff] [blame] | 36 | { "table", 1, 0, 'T'}, |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 37 | { 0 } |
| 38 | }; |
| 39 | |
| 40 | static void print_usage(const char *name, const char *version) __attribute__((noreturn)); |
| 41 | |
| 42 | static void print_usage(const char *name, const char *version) |
| 43 | { |
Martin Josefsson | bb2f68a | 2004-02-01 22:03:27 +0000 | [diff] [blame] | 44 | fprintf(stderr, "Usage: %s [-b] [-c] [-v] [-t] [-h]\n" |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 45 | " [ --binary ]\n" |
| 46 | " [ --counters ]\n" |
| 47 | " [ --verbose ]\n" |
Martin Josefsson | bb2f68a | 2004-02-01 22:03:27 +0000 | [diff] [blame] | 48 | " [ --test ]\n" |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 49 | " [ --help ]\n" |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 50 | " [ --noflush ]\n" |
Peter Warasin | b9cde3a | 2007-11-05 19:35:31 +0000 | [diff] [blame] | 51 | " [ --table=<TABLE> ]\n" |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 52 | " [ --modprobe=<command>]\n", name); |
| 53 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 54 | exit(1); |
| 55 | } |
| 56 | |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 57 | iptc_handle_t create_handle(const char *tablename, const char* modprobe ) |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 58 | { |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 59 | iptc_handle_t handle; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 60 | |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 61 | handle = iptc_init(tablename); |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 62 | |
| 63 | if (!handle) { |
| 64 | /* try to insmod the module if iptc_init failed */ |
Yasuyuki KOZAKAI | 0d502bc | 2007-07-24 05:52:07 +0000 | [diff] [blame] | 65 | load_xtables_ko(modprobe, 0); |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 66 | handle = iptc_init(tablename); |
| 67 | } |
| 68 | |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 69 | if (!handle) { |
Patrick McHardy | 5b098ac | 2007-02-14 13:59:12 +0000 | [diff] [blame] | 70 | exit_error(PARAMETER_PROBLEM, "%s: unable to initialize " |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 71 | "table '%s'\n", program_name, tablename); |
| 72 | exit(1); |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 73 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 74 | return handle; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 75 | } |
| 76 | |
Lutz Jaenicke | e78c69c | 2006-12-09 13:06:04 +0000 | [diff] [blame] | 77 | static int parse_counters(char *string, struct ipt_counters *ctr) |
Harald Welte | d8e6563 | 2001-01-05 15:20:07 +0000 | [diff] [blame] | 78 | { |
Patrick McHardy | 875441e | 2007-10-17 08:48:58 +0000 | [diff] [blame] | 79 | unsigned long long pcnt, bcnt; |
| 80 | int ret; |
Patrick McHardy | b73691f | 2007-09-05 14:10:53 +0000 | [diff] [blame] | 81 | |
Patrick McHardy | 875441e | 2007-10-17 08:48:58 +0000 | [diff] [blame] | 82 | ret = sscanf(string, "[%llu:%llu]", |
| 83 | (unsigned long long *)&pcnt, |
| 84 | (unsigned long long *)&bcnt); |
| 85 | ctr->pcnt = pcnt; |
| 86 | ctr->bcnt = bcnt; |
| 87 | return ret == 2; |
Harald Welte | d8e6563 | 2001-01-05 15:20:07 +0000 | [diff] [blame] | 88 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 89 | |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 90 | /* global new argv and argc */ |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 91 | static char *newargv[255]; |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 92 | static int newargc; |
| 93 | |
| 94 | /* function adding one argument to newargv, updating newargc |
| 95 | * returns true if argument added, false otherwise */ |
| 96 | static int add_argv(char *what) { |
Harald Welte | bb41f88 | 2001-10-21 14:11:54 +0000 | [diff] [blame] | 97 | DEBUGP("add_argv: %s\n", what); |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 98 | if (what && ((newargc + 1) < sizeof(newargv)/sizeof(char *))) { |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 99 | newargv[newargc] = strdup(what); |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 100 | newargc++; |
| 101 | return 1; |
| 102 | } else |
| 103 | return 0; |
| 104 | } |
| 105 | |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 106 | static void free_argv(void) { |
| 107 | int i; |
| 108 | |
| 109 | for (i = 0; i < newargc; i++) |
| 110 | free(newargv[i]); |
| 111 | } |
| 112 | |
Bastiaan Bakker | 4e3771f | 2004-06-25 11:18:57 +0000 | [diff] [blame] | 113 | #ifdef IPTABLES_MULTI |
| 114 | int |
| 115 | iptables_restore_main(int argc, char *argv[]) |
| 116 | #else |
| 117 | int |
| 118 | main(int argc, char *argv[]) |
| 119 | #endif |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 120 | { |
Martin Josefsson | 841e4ae | 2003-05-02 15:30:11 +0000 | [diff] [blame] | 121 | iptc_handle_t handle = NULL; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 122 | char buffer[10240]; |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 123 | int c; |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 124 | char curtable[IPT_TABLE_MAXNAMELEN + 1]; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 125 | FILE *in; |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 126 | const char *modprobe = 0; |
Martin Josefsson | bb2f68a | 2004-02-01 22:03:27 +0000 | [diff] [blame] | 127 | int in_table = 0, testing = 0; |
Peter Warasin | b9cde3a | 2007-11-05 19:35:31 +0000 | [diff] [blame] | 128 | const char *tablename = 0; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 129 | |
| 130 | program_name = "iptables-restore"; |
Harald Welte | 80fe35d | 2002-05-29 13:08:15 +0000 | [diff] [blame] | 131 | program_version = IPTABLES_VERSION; |
Illes Marci | 63e9063 | 2003-03-03 08:08:37 +0000 | [diff] [blame] | 132 | line = 0; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 133 | |
Martin Josefsson | 357d59d | 2004-12-27 19:49:28 +0000 | [diff] [blame] | 134 | lib_dir = getenv("IPTABLES_LIB_DIR"); |
| 135 | if (!lib_dir) |
| 136 | lib_dir = IPT_LIB_DIR; |
| 137 | |
Harald Welte | 3efb6ea | 2001-08-06 18:50:21 +0000 | [diff] [blame] | 138 | #ifdef NO_SHARED_LIBS |
| 139 | init_extensions(); |
| 140 | #endif |
| 141 | |
Peter Warasin | b9cde3a | 2007-11-05 19:35:31 +0000 | [diff] [blame] | 142 | while ((c = getopt_long(argc, argv, "bcvthnM:T:", options, NULL)) != -1) { |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 143 | switch (c) { |
| 144 | case 'b': |
| 145 | binary = 1; |
| 146 | break; |
| 147 | case 'c': |
| 148 | counters = 1; |
| 149 | break; |
Marc Boucher | 1277b59 | 2001-12-06 15:06:34 +0000 | [diff] [blame] | 150 | case 'v': |
| 151 | verbose = 1; |
| 152 | break; |
Martin Josefsson | bb2f68a | 2004-02-01 22:03:27 +0000 | [diff] [blame] | 153 | case 't': |
| 154 | testing = 1; |
| 155 | break; |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 156 | case 'h': |
| 157 | print_usage("iptables-restore", |
Harald Welte | 80fe35d | 2002-05-29 13:08:15 +0000 | [diff] [blame] | 158 | IPTABLES_VERSION); |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 159 | break; |
| 160 | case 'n': |
| 161 | noflush = 1; |
| 162 | break; |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 163 | case 'M': |
| 164 | modprobe = optarg; |
| 165 | break; |
Peter Warasin | b9cde3a | 2007-11-05 19:35:31 +0000 | [diff] [blame] | 166 | case 'T': |
| 167 | tablename = optarg; |
| 168 | break; |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 169 | } |
| 170 | } |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 171 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 172 | if (optind == argc - 1) { |
| 173 | in = fopen(argv[optind], "r"); |
| 174 | if (!in) { |
Pavel Rusnak | 972af09 | 2007-05-10 15:00:39 +0000 | [diff] [blame] | 175 | fprintf(stderr, "Can't open %s: %s\n", argv[optind], |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 176 | strerror(errno)); |
| 177 | exit(1); |
| 178 | } |
| 179 | } |
| 180 | else if (optind < argc) { |
Pavel Rusnak | 972af09 | 2007-05-10 15:00:39 +0000 | [diff] [blame] | 181 | fprintf(stderr, "Unknown arguments found on commandline\n"); |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 182 | exit(1); |
| 183 | } |
| 184 | else in = stdin; |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 185 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 186 | /* Grab standard input. */ |
| 187 | while (fgets(buffer, sizeof(buffer), in)) { |
Harald Welte | b3f2219 | 2003-03-06 11:56:31 +0000 | [diff] [blame] | 188 | int ret = 0; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 189 | |
| 190 | line++; |
Martin Josefsson | 5065afa | 2004-01-31 19:33:47 +0000 | [diff] [blame] | 191 | if (buffer[0] == '\n') |
| 192 | continue; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 193 | else if (buffer[0] == '#') { |
Martin Josefsson | 3673dcb | 2004-01-31 19:41:49 +0000 | [diff] [blame] | 194 | if (verbose) |
| 195 | fputs(buffer, stdout); |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 196 | continue; |
Illes Marci | 26100fa | 2003-03-03 08:05:07 +0000 | [diff] [blame] | 197 | } else if ((strcmp(buffer, "COMMIT\n") == 0) && (in_table)) { |
Martin Josefsson | bb2f68a | 2004-02-01 22:03:27 +0000 | [diff] [blame] | 198 | if (!testing) { |
| 199 | DEBUGP("Calling commit\n"); |
| 200 | ret = iptc_commit(&handle); |
| 201 | } else { |
| 202 | DEBUGP("Not calling commit, testing\n"); |
| 203 | ret = 1; |
| 204 | } |
Illes Marci | 26100fa | 2003-03-03 08:05:07 +0000 | [diff] [blame] | 205 | in_table = 0; |
Harald Welte | b3f2219 | 2003-03-06 11:56:31 +0000 | [diff] [blame] | 206 | } else if ((buffer[0] == '*') && (!in_table)) { |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 207 | /* New table */ |
| 208 | char *table; |
| 209 | |
| 210 | table = strtok(buffer+1, " \t\n"); |
| 211 | DEBUGP("line %u, table '%s'\n", line, table); |
| 212 | if (!table) { |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 213 | exit_error(PARAMETER_PROBLEM, |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 214 | "%s: line %u table name invalid\n", |
| 215 | program_name, line); |
| 216 | exit(1); |
| 217 | } |
| 218 | strncpy(curtable, table, IPT_TABLE_MAXNAMELEN); |
Karsten Desler | 073df8f | 2004-01-31 15:33:55 +0000 | [diff] [blame] | 219 | curtable[IPT_TABLE_MAXNAMELEN] = '\0'; |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 220 | |
Peter Warasin | b9cde3a | 2007-11-05 19:35:31 +0000 | [diff] [blame] | 221 | if (tablename && (strcmp(tablename, table) != 0)) |
| 222 | continue; |
Martin Josefsson | 841e4ae | 2003-05-02 15:30:11 +0000 | [diff] [blame] | 223 | if (handle) |
| 224 | iptc_free(&handle); |
| 225 | |
Harald Welte | 5891865 | 2001-06-16 18:25:25 +0000 | [diff] [blame] | 226 | handle = create_handle(table, modprobe); |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 227 | if (noflush == 0) { |
| 228 | DEBUGP("Cleaning all chains of table '%s'\n", |
| 229 | table); |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 230 | for_each_chain(flush_entries, verbose, 1, |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 231 | &handle); |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 232 | |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 233 | DEBUGP("Deleting all user-defined chains " |
| 234 | "of table '%s'\n", table); |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 235 | for_each_chain(delete_chain, verbose, 0, |
Harald Welte | a9d2708 | 2000-12-19 16:10:42 +0000 | [diff] [blame] | 236 | &handle) ; |
| 237 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 238 | |
| 239 | ret = 1; |
Illes Marci | 26100fa | 2003-03-03 08:05:07 +0000 | [diff] [blame] | 240 | in_table = 1; |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 241 | |
Illes Marci | 26100fa | 2003-03-03 08:05:07 +0000 | [diff] [blame] | 242 | } else if ((buffer[0] == ':') && (in_table)) { |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 243 | /* New chain. */ |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 244 | char *policy, *chain; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 245 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 246 | chain = strtok(buffer+1, " \t\n"); |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 247 | DEBUGP("line %u, chain '%s'\n", line, chain); |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 248 | if (!chain) { |
| 249 | exit_error(PARAMETER_PROBLEM, |
| 250 | "%s: line %u chain name invalid\n", |
| 251 | program_name, line); |
| 252 | exit(1); |
| 253 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 254 | |
Harald Welte | 3a506ac | 2004-08-30 16:00:09 +0000 | [diff] [blame] | 255 | if (iptc_builtin(chain, handle) <= 0) { |
Charlie Brady | 595e493 | 2005-06-12 15:54:15 +0000 | [diff] [blame] | 256 | if (noflush && iptc_is_chain(chain, handle)) { |
| 257 | DEBUGP("Flushing existing user defined chain '%s'\n", chain); |
| 258 | if (!iptc_flush_entries(chain, &handle)) |
| 259 | exit_error(PARAMETER_PROBLEM, |
| 260 | "error flushing chain " |
| 261 | "'%s':%s\n", chain, |
| 262 | strerror(errno)); |
| 263 | } else { |
| 264 | DEBUGP("Creating new chain '%s'\n", chain); |
| 265 | if (!iptc_create_chain(chain, &handle)) |
| 266 | exit_error(PARAMETER_PROBLEM, |
| 267 | "error creating chain " |
| 268 | "'%s':%s\n", chain, |
| 269 | strerror(errno)); |
| 270 | } |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 271 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 272 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 273 | policy = strtok(NULL, " \t\n"); |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 274 | DEBUGP("line %u, policy '%s'\n", line, policy); |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 275 | if (!policy) { |
| 276 | exit_error(PARAMETER_PROBLEM, |
| 277 | "%s: line %u policy invalid\n", |
| 278 | program_name, line); |
| 279 | exit(1); |
| 280 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 281 | |
| 282 | if (strcmp(policy, "-") != 0) { |
Harald Welte | d8e6563 | 2001-01-05 15:20:07 +0000 | [diff] [blame] | 283 | struct ipt_counters count; |
| 284 | |
| 285 | if (counters) { |
| 286 | char *ctrs; |
| 287 | ctrs = strtok(NULL, " \t\n"); |
| 288 | |
Harald Welte | 6f38a30 | 2006-02-09 14:35:38 +0000 | [diff] [blame] | 289 | if (!ctrs || !parse_counters(ctrs, &count)) |
| 290 | exit_error(PARAMETER_PROBLEM, |
| 291 | "invalid policy counters " |
| 292 | "for chain '%s'\n", chain); |
Harald Welte | d8e6563 | 2001-01-05 15:20:07 +0000 | [diff] [blame] | 293 | |
| 294 | } else { |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 295 | memset(&count, 0, |
Harald Welte | d8e6563 | 2001-01-05 15:20:07 +0000 | [diff] [blame] | 296 | sizeof(struct ipt_counters)); |
| 297 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 298 | |
| 299 | DEBUGP("Setting policy of chain %s to %s\n", |
| 300 | chain, policy); |
| 301 | |
Harald Welte | d8e6563 | 2001-01-05 15:20:07 +0000 | [diff] [blame] | 302 | if (!iptc_set_policy(chain, policy, &count, |
| 303 | &handle)) |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 304 | exit_error(OTHER_PROBLEM, |
| 305 | "Can't set policy `%s'" |
| 306 | " on `%s' line %u: %s\n", |
| 307 | chain, policy, line, |
| 308 | iptc_strerror(errno)); |
| 309 | } |
| 310 | |
| 311 | ret = 1; |
| 312 | |
Illes Marci | 26100fa | 2003-03-03 08:05:07 +0000 | [diff] [blame] | 313 | } else if (in_table) { |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 314 | int a; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 315 | char *ptr = buffer; |
Harald Welte | ccd49e5 | 2001-01-23 22:54:34 +0000 | [diff] [blame] | 316 | char *pcnt = NULL; |
| 317 | char *bcnt = NULL; |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 318 | char *parsestart; |
| 319 | |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 320 | /* the parser */ |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 321 | char *curchar; |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 322 | int quote_open; |
Max Kellermann | b4ef34f | 2008-01-29 13:43:35 +0000 | [diff] [blame] | 323 | size_t param_len; |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 324 | |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 325 | /* reset the newargv */ |
| 326 | newargc = 0; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 327 | |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 328 | if (buffer[0] == '[') { |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 329 | /* we have counters in our input */ |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 330 | ptr = strchr(buffer, ']'); |
| 331 | if (!ptr) |
| 332 | exit_error(PARAMETER_PROBLEM, |
| 333 | "Bad line %u: need ]\n", |
| 334 | line); |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 335 | |
Harald Welte | ccd49e5 | 2001-01-23 22:54:34 +0000 | [diff] [blame] | 336 | pcnt = strtok(buffer+1, ":"); |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 337 | if (!pcnt) |
| 338 | exit_error(PARAMETER_PROBLEM, |
| 339 | "Bad line %u: need :\n", |
| 340 | line); |
| 341 | |
Harald Welte | ccd49e5 | 2001-01-23 22:54:34 +0000 | [diff] [blame] | 342 | bcnt = strtok(NULL, "]"); |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 343 | if (!bcnt) |
| 344 | exit_error(PARAMETER_PROBLEM, |
| 345 | "Bad line %u: need ]\n", |
| 346 | line); |
| 347 | |
| 348 | /* start command parsing after counter */ |
| 349 | parsestart = ptr + 1; |
| 350 | } else { |
| 351 | /* start command parsing at start of line */ |
| 352 | parsestart = buffer; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 353 | } |
Rusty Russell | 7e53bf9 | 2000-03-20 07:03:28 +0000 | [diff] [blame] | 354 | |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 355 | add_argv(argv[0]); |
| 356 | add_argv("-t"); |
| 357 | add_argv((char *) &curtable); |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 358 | |
Harald Welte | ccd49e5 | 2001-01-23 22:54:34 +0000 | [diff] [blame] | 359 | if (counters && pcnt && bcnt) { |
Harald Welte | 9f7fa49 | 2001-03-15 15:12:02 +0000 | [diff] [blame] | 360 | add_argv("--set-counters"); |
| 361 | add_argv((char *) pcnt); |
| 362 | add_argv((char *) bcnt); |
Harald Welte | ccd49e5 | 2001-01-23 22:54:34 +0000 | [diff] [blame] | 363 | } |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 364 | |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 365 | /* After fighting with strtok enough, here's now |
| 366 | * a 'real' parser. According to Rusty I'm now no |
| 367 | * longer a real hacker, but I can live with that */ |
| 368 | |
| 369 | quote_open = 0; |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 370 | param_len = 0; |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 371 | |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 372 | for (curchar = parsestart; *curchar; curchar++) { |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 373 | char param_buffer[1024]; |
| 374 | |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 375 | if (*curchar == '"') { |
Michael Rash | 29cdbd0 | 2004-01-05 09:41:50 +0000 | [diff] [blame] | 376 | /* quote_open cannot be true if there |
| 377 | * was no previous character. Thus, |
| 378 | * curchar-1 has to be within bounds */ |
| 379 | if (quote_open && |
| 380 | *(curchar-1) != '\\') { |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 381 | quote_open = 0; |
| 382 | *curchar = ' '; |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 383 | } else if (!quote_open) { |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 384 | quote_open = 1; |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 385 | continue; |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 386 | } |
| 387 | } |
| 388 | if (*curchar == ' ' |
| 389 | || *curchar == '\t' |
| 390 | || * curchar == '\n') { |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 391 | |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 392 | if (quote_open) { |
| 393 | param_buffer[param_len++] = |
| 394 | *curchar; |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 395 | continue; |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 396 | } |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 397 | |
Harald Welte | 974d010 | 2001-05-26 04:41:56 +0000 | [diff] [blame] | 398 | if (!param_len) { |
| 399 | /* two spaces? */ |
Harald Welte | 974d010 | 2001-05-26 04:41:56 +0000 | [diff] [blame] | 400 | continue; |
| 401 | } |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 402 | |
| 403 | param_buffer[param_len] = '\0'; |
Harald Welte | bb41f88 | 2001-10-21 14:11:54 +0000 | [diff] [blame] | 404 | |
| 405 | /* check if table name specified */ |
Harald Welte | 48a6f90 | 2001-10-22 15:16:21 +0000 | [diff] [blame] | 406 | if (!strncmp(param_buffer, "-t", 3) |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 407 | || !strncmp(param_buffer, "--table", 8)) { |
| 408 | exit_error(PARAMETER_PROBLEM, |
Harald Welte | bb41f88 | 2001-10-21 14:11:54 +0000 | [diff] [blame] | 409 | "Line %u seems to have a " |
| 410 | "-t table option.\n", line); |
| 411 | exit(1); |
| 412 | } |
| 413 | |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 414 | add_argv(param_buffer); |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 415 | param_len = 0; |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 416 | } else { |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 417 | /* Skip backslash that escapes quote: |
| 418 | * the standard input does not require |
| 419 | * escaping. However, the output |
| 420 | * generated by iptables-save |
| 421 | * introduces bashlash to keep |
| 422 | * consistent with iptables |
| 423 | */ |
| 424 | if (quote_open && |
| 425 | *curchar == '\\' && |
| 426 | *(curchar+1) == '"') |
| 427 | continue; |
| 428 | |
| 429 | /* regular character, copy to buffer */ |
| 430 | param_buffer[param_len++] = *curchar; |
| 431 | |
| 432 | if (param_len >= sizeof(param_buffer)) |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 433 | exit_error(PARAMETER_PROBLEM, |
Pablo Neira Ayuso | b4f3164 | 2007-04-18 10:27:02 +0000 | [diff] [blame] | 434 | "Parameter too long!"); |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 435 | } |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 436 | } |
| 437 | |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 438 | DEBUGP("calling do_command(%u, argv, &%s, handle):\n", |
| 439 | newargc, curtable); |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 440 | |
Harald Welte | fa48fc8 | 2001-10-16 09:51:33 +0000 | [diff] [blame] | 441 | for (a = 0; a < newargc; a++) |
Harald Welte | ae1ff9f | 2000-12-01 14:26:20 +0000 | [diff] [blame] | 442 | DEBUGP("argv[%u]: %s\n", a, newargv[a]); |
| 443 | |
Max Kellermann | 5b76f68 | 2008-01-29 13:42:48 +0000 | [diff] [blame] | 444 | ret = do_command(newargc, newargv, |
Harald Welte | 26e643f | 2001-05-03 20:50:03 +0000 | [diff] [blame] | 445 | &newargv[2], &handle); |
| 446 | |
| 447 | free_argv(); |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 448 | } |
Peter Warasin | b9cde3a | 2007-11-05 19:35:31 +0000 | [diff] [blame] | 449 | if (tablename && (strcmp(tablename, curtable) != 0)) |
| 450 | continue; |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 451 | if (!ret) { |
| 452 | fprintf(stderr, "%s: line %u failed\n", |
| 453 | program_name, line); |
| 454 | exit(1); |
| 455 | } |
| 456 | } |
Martin Josefsson | 3229a7c | 2004-02-01 21:46:04 +0000 | [diff] [blame] | 457 | if (in_table) { |
| 458 | fprintf(stderr, "%s: COMMIT expected at line %u\n", |
| 459 | program_name, line + 1); |
| 460 | exit(1); |
| 461 | } |
Marc Boucher | e6869a8 | 2000-03-20 06:03:29 +0000 | [diff] [blame] | 462 | |
| 463 | return 0; |
| 464 | } |