1 /* 2 * Copyright (c) 2002-2003 Luigi Rizzo 3 * Copyright (c) 1996 Alex Nash, Paul Traina, Poul-Henning Kamp 4 * Copyright (c) 1994 Ugen J.S.Antsilevich 5 * 6 * Idea and grammar partially left from: 7 * Copyright (c) 1993 Daniel Boulet 8 * 9 * Redistribution and use in source forms, with and without modification, 10 * are permitted provided that this entire comment appears intact. 11 * 12 * Redistribution in binary form may occur without any restrictions. 13 * Obviously, it would be nice if you gave credit where credit is due 14 * but requiring it would be too onerous. 15 * 16 * This software is provided ``AS IS'' without any warranties of any kind. 17 * 18 * NEW command line interface for IP firewall facility 19 * 20 * $FreeBSD$ 21 */ 22 23 /* 24 * Options that can be set on the command line. 25 * When reading commands from a file, a subset of the options can also 26 * be applied globally by specifying them before the file name. 27 * After that, each line can contain its own option that changes 28 * the global value. 29 * XXX The context is not restored after each line. 30 */ 31 32 struct cmdline_opts { 33 /* boolean options: */ 34 int do_value_as_ip; /* show table value as IP */ 35 int do_resolv; /* try to resolve all ip to names */ 36 int do_time; /* Show time stamps */ 37 int do_quiet; /* Be quiet in add and flush */ 38 int do_pipe; /* this cmd refers to a pipe/queue/sched */ 39 int do_nat; /* this cmd refers to a nat config */ 40 int do_dynamic; /* display dynamic rules */ 41 int do_expired; /* display expired dynamic rules */ 42 int do_compact; /* show rules in compact mode */ 43 int do_force; /* do not ask for confirmation */ 44 int show_sets; /* display the set each rule belongs to */ 45 int test_only; /* only check syntax */ 46 int comment_only; /* only print action and comment */ 47 int verbose; /* be verbose on some commands */ 48 49 /* The options below can have multiple values. */ 50 51 int do_sort; /* field to sort results (0 = no) */ 52 /* valid fields are 1 and above */ 53 54 int use_set; /* work with specified set number */ 55 /* 0 means all sets, otherwise apply to set use_set - 1 */ 56 57 }; 58 59 extern struct cmdline_opts co; 60 61 /* 62 * _s_x is a structure that stores a string <-> token pairs, used in 63 * various places in the parser. Entries are stored in arrays, 64 * with an entry with s=NULL as terminator. 65 * The search routines are match_token() and match_value(). 66 * Often, an element with x=0 contains an error string. 67 * 68 */ 69 struct _s_x { 70 char const *s; 71 int x; 72 }; 73 74 enum tokens { 75 TOK_NULL=0, 76 77 TOK_OR, 78 TOK_NOT, 79 TOK_STARTBRACE, 80 TOK_ENDBRACE, 81 82 TOK_ACCEPT, 83 TOK_COUNT, 84 TOK_PIPE, 85 TOK_LINK, 86 TOK_QUEUE, 87 TOK_FLOWSET, 88 TOK_SCHED, 89 TOK_DIVERT, 90 TOK_TEE, 91 TOK_NETGRAPH, 92 TOK_NGTEE, 93 TOK_FORWARD, 94 TOK_SKIPTO, 95 TOK_DENY, 96 TOK_REJECT, 97 TOK_RESET, 98 TOK_UNREACH, 99 TOK_CHECKSTATE, 100 TOK_NAT, 101 TOK_REASS, 102 TOK_CALL, 103 TOK_RETURN, 104 105 TOK_ALTQ, 106 TOK_LOG, 107 TOK_TAG, 108 TOK_UNTAG, 109 110 TOK_TAGGED, 111 TOK_UID, 112 TOK_GID, 113 TOK_JAIL, 114 TOK_IN, 115 TOK_LIMIT, 116 TOK_KEEPSTATE, 117 TOK_LAYER2, 118 TOK_OUT, 119 TOK_DIVERTED, 120 TOK_DIVERTEDLOOPBACK, 121 TOK_DIVERTEDOUTPUT, 122 TOK_XMIT, 123 TOK_RECV, 124 TOK_VIA, 125 TOK_FRAG, 126 TOK_IPOPTS, 127 TOK_IPLEN, 128 TOK_IPID, 129 TOK_IPPRECEDENCE, 130 TOK_DSCP, 131 TOK_IPTOS, 132 TOK_IPTTL, 133 TOK_IPVER, 134 TOK_ESTAB, 135 TOK_SETUP, 136 TOK_TCPDATALEN, 137 TOK_TCPFLAGS, 138 TOK_TCPOPTS, 139 TOK_TCPSEQ, 140 TOK_TCPACK, 141 TOK_TCPWIN, 142 TOK_ICMPTYPES, 143 TOK_MAC, 144 TOK_MACTYPE, 145 TOK_VERREVPATH, 146 TOK_VERSRCREACH, 147 TOK_ANTISPOOF, 148 TOK_IPSEC, 149 TOK_COMMENT, 150 151 TOK_PLR, 152 TOK_NOERROR, 153 TOK_BUCKETS, 154 TOK_DSTIP, 155 TOK_SRCIP, 156 TOK_DSTPORT, 157 TOK_SRCPORT, 158 TOK_ALL, 159 TOK_MASK, 160 TOK_FLOW_MASK, 161 TOK_SCHED_MASK, 162 TOK_BW, 163 TOK_DELAY, 164 TOK_PROFILE, 165 TOK_BURST, 166 TOK_RED, 167 TOK_GRED, 168 TOK_DROPTAIL, 169 TOK_PROTO, 170 /* dummynet tokens */ 171 TOK_WEIGHT, 172 TOK_LMAX, 173 TOK_PRI, 174 TOK_TYPE, 175 TOK_SLOTSIZE, 176 177 TOK_IP, 178 TOK_IF, 179 TOK_ALOG, 180 TOK_DENY_INC, 181 TOK_SAME_PORTS, 182 TOK_UNREG_ONLY, 183 TOK_SKIP_GLOBAL, 184 TOK_RESET_ADDR, 185 TOK_ALIAS_REV, 186 TOK_PROXY_ONLY, 187 TOK_REDIR_ADDR, 188 TOK_REDIR_PORT, 189 TOK_REDIR_PROTO, 190 191 TOK_IPV6, 192 TOK_FLOWID, 193 TOK_ICMP6TYPES, 194 TOK_EXT6HDR, 195 TOK_DSTIP6, 196 TOK_SRCIP6, 197 198 TOK_IPV4, 199 TOK_UNREACH6, 200 TOK_RESET6, 201 202 TOK_FIB, 203 TOK_SETFIB, 204 TOK_LOOKUP, 205 TOK_SOCKARG, 206 TOK_SETDSCP, 207 }; 208 /* 209 * the following macro returns an error message if we run out of 210 * arguments. 211 */ 212 #define NEED(_p, msg) {if (!_p) errx(EX_USAGE, msg);} 213 #define NEED1(msg) {if (!(*av)) errx(EX_USAGE, msg);} 214 215 int pr_u64(uint64_t *pd, int width); 216 217 /* memory allocation support */ 218 void *safe_calloc(size_t number, size_t size); 219 void *safe_realloc(void *ptr, size_t size); 220 221 /* string comparison functions used for historical compatibility */ 222 int _substrcmp(const char *str1, const char* str2); 223 int _substrcmp2(const char *str1, const char* str2, const char* str3); 224 225 /* utility functions */ 226 int match_token(struct _s_x *table, char *string); 227 char const *match_value(struct _s_x *p, int value); 228 229 int do_cmd(int optname, void *optval, uintptr_t optlen); 230 231 struct in6_addr; 232 void n2mask(struct in6_addr *mask, int n); 233 int contigmask(uint8_t *p, int len); 234 235 /* 236 * Forward declarations to avoid include way too many headers. 237 * C does not allow duplicated typedefs, so we use the base struct 238 * that the typedef points to. 239 * Should the typedefs use a different type, the compiler will 240 * still detect the change when compiling the body of the 241 * functions involved, so we do not lose error checking. 242 */ 243 struct _ipfw_insn; 244 struct _ipfw_insn_altq; 245 struct _ipfw_insn_u32; 246 struct _ipfw_insn_ip6; 247 struct _ipfw_insn_icmp6; 248 249 /* 250 * The reserved set numer. This is a constant in ip_fw.h 251 * but we store it in a variable so other files do not depend 252 * in that header just for one constant. 253 */ 254 extern int resvd_set_number; 255 256 /* first-level command handlers */ 257 void ipfw_add(char *av[]); 258 void ipfw_show_nat(int ac, char **av); 259 void ipfw_config_pipe(int ac, char **av); 260 void ipfw_config_nat(int ac, char **av); 261 void ipfw_sets_handler(char *av[]); 262 void ipfw_table_handler(int ac, char *av[]); 263 void ipfw_sysctl_handler(char *av[], int which); 264 void ipfw_delete(char *av[]); 265 void ipfw_flush(int force); 266 void ipfw_zero(int ac, char *av[], int optname); 267 void ipfw_list(int ac, char *av[], int show_counters); 268 269 /* altq.c */ 270 void altq_set_enabled(int enabled); 271 u_int32_t altq_name_to_qid(const char *name); 272 273 void print_altq_cmd(struct _ipfw_insn_altq *altqptr); 274 275 /* dummynet.c */ 276 void dummynet_list(int ac, char *av[], int show_counters); 277 void dummynet_flush(void); 278 int ipfw_delete_pipe(int pipe_or_queue, int n); 279 280 /* ipv6.c */ 281 void print_unreach6_code(uint16_t code); 282 void print_ip6(struct _ipfw_insn_ip6 *cmd, char const *s); 283 void print_flow6id(struct _ipfw_insn_u32 *cmd); 284 void print_icmp6types(struct _ipfw_insn_u32 *cmd); 285 void print_ext6hdr(struct _ipfw_insn *cmd ); 286 287 struct _ipfw_insn *add_srcip6(struct _ipfw_insn *cmd, char *av, int cblen); 288 struct _ipfw_insn *add_dstip6(struct _ipfw_insn *cmd, char *av, int cblen); 289 290 void fill_flow6(struct _ipfw_insn_u32 *cmd, char *av, int cblen); 291 void fill_unreach6_code(u_short *codep, char *str); 292 void fill_icmp6types(struct _ipfw_insn_icmp6 *cmd, char *av, int cblen); 293 int fill_ext6hdr(struct _ipfw_insn *cmd, char *av); 294