static int
brip_parse(int c, char **argv, int invert, unsigned int *flags,
const void *entry, struct xt_entry_match **match)
{
struct ebt_ip_info *info = (struct ebt_ip_info *)(*match)->data;
switch (c) {
case IP_SOURCE:
if (invert)
info->invflags |= EBT_IP_SOURCE;
ebt_parse_ip_address(optarg, &info->saddr, &info->smsk);
info->bitmask |= EBT_IP_SOURCE;
break;
case IP_DEST:
if (invert)
info->invflags |= EBT_IP_DEST;
ebt_parse_ip_address(optarg, &info->daddr, &info->dmsk);
info->bitmask |= EBT_IP_DEST;
break;
case IP_SPORT:
if (invert)
info->invflags |= EBT_IP_SPORT;
parse_port_range(NULL, optarg, info->sport);
info->bitmask |= EBT_IP_SPORT;
break;
case IP_DPORT:
if (invert)
info->invflags |= EBT_IP_DPORT;
parse_port_range(NULL, optarg, info->dport);
info->bitmask |= EBT_IP_DPORT;
break;
case IP_EBT_TOS:
if (invert)
info->invflags |= EBT_IP_TOS;
if (!xtables_strtoul(optarg, NULL, (uintmax_t *)&info->tos,
0, 255))
xtables_error(PARAMETER_PROBLEM,
"Problem with specified IP tos");
info->bitmask |= EBT_IP_TOS;
break;
case IP_PROTO:
if (invert)
info->invflags |= EBT_IP_PROTO;
info->protocol = xtables_parse_protocol(optarg);
if (info->protocol == -1)
xtables_error(PARAMETER_PROBLEM,
"Unknown specified IP protocol - %s",
optarg);
info->bitmask |= EBT_IP_PROTO;
break;
default:
return 0;
}
*flags |= info->bitmask;
return 1;
}
/* Function which parses command options; returns true if it ate an option */
static int ipvs_mt_parse(int c, char **argv, int invert, unsigned int *flags,
const void *entry, struct xt_entry_match **match,
unsigned int family)
{
struct xt_ipvs_mtinfo *data = (void *)(*match)->data;
char *p = NULL;
u_int8_t op = 0;
if ('0' <= c && c <= '6') {
static const int ops[] = {
XT_IPVS_IPVS_PROPERTY,
XT_IPVS_PROTO,
XT_IPVS_VADDR,
XT_IPVS_VPORT,
XT_IPVS_DIR,
XT_IPVS_METHOD,
XT_IPVS_VPORTCTL
};
op = ops[c - '0'];
} else
return 0;
if (*flags & op & XT_IPVS_ONCE_MASK)
goto multiple_use;
switch (c) {
case '0': /* --ipvs */
/* Nothing to do here. */
break;
case '1': /* --vproto */
/* Canonicalize into lower case */
for (p = optarg; *p != '\0'; ++p)
*p = tolower(*p);
data->l4proto = xtables_parse_protocol(optarg);
break;
case '2': /* --vaddr */
ipvs_mt_parse_addr_and_mask(optarg, &data->vaddr,
&data->vmask, family);
break;
case '3': /* --vport */
data->vport = htons(xtables_parse_port(optarg, "tcp"));
break;
case '4': /* --vdir */
xtables_param_act(XTF_NO_INVERT, "ipvs", "--vdir", invert);
if (strcasecmp(optarg, "ORIGINAL") == 0) {
data->bitmask |= XT_IPVS_DIR;
data->invert &= ~XT_IPVS_DIR;
} else if (strcasecmp(optarg, "REPLY") == 0) {
data->bitmask |= XT_IPVS_DIR;
data->invert |= XT_IPVS_DIR;
} else {
xtables_param_act(XTF_BAD_VALUE,
"ipvs", "--vdir", optarg);
}
break;
case '5': /* --vmethod */
if (strcasecmp(optarg, "GATE") == 0)
data->fwd_method = IP_VS_CONN_F_DROUTE;
else if (strcasecmp(optarg, "IPIP") == 0)
data->fwd_method = IP_VS_CONN_F_TUNNEL;
else if (strcasecmp(optarg, "MASQ") == 0)
data->fwd_method = IP_VS_CONN_F_MASQ;
else
xtables_param_act(XTF_BAD_VALUE,
"ipvs", "--vmethod", optarg);
break;
case '6': /* --vportctl */
data->vportctl = htons(xtables_parse_port(optarg, "tcp"));
break;
default:
/* Hu? How did we come here? */
assert(false);
return 0;
}
if (op & XT_IPVS_ONCE_MASK) {
if (data->invert & XT_IPVS_IPVS_PROPERTY)
xtables_error(PARAMETER_PROBLEM,
"! --ipvs cannot be together with"
" other options");
data->bitmask |= XT_IPVS_IPVS_PROPERTY;
}
data->bitmask |= op;
if (invert)
data->invert |= op;
*flags |= op;
return 1;
multiple_use:
xtables_error(PARAMETER_PROBLEM,
"multiple use of the same IPVS option is not allowed");
}
static int policy_parse(int c, int invert, unsigned int *flags,
struct xt_policy_info *info, uint8_t family)
{
struct xt_policy_elem *e = &info->pol[info->len];
struct in_addr *addr = NULL, mask;
struct in6_addr *addr6 = NULL, mask6;
unsigned int naddr = 0, num;
int mode;
xtables_check_inverse(optarg, &invert, &optind, 0);
switch (c) {
case '1':
if (info->flags & (XT_POLICY_MATCH_IN | XT_POLICY_MATCH_OUT))
xtables_error(PARAMETER_PROBLEM,
"policy match: double --dir option");
if (invert)
xtables_error(PARAMETER_PROBLEM,
"policy match: can't invert --dir option");
info->flags |= parse_direction(optarg);
break;
case '2':
if (invert)
xtables_error(PARAMETER_PROBLEM,
"policy match: can't invert --policy option");
info->flags |= parse_policy(optarg);
break;
case '3':
if (info->flags & XT_POLICY_MATCH_STRICT)
xtables_error(PARAMETER_PROBLEM,
"policy match: double --strict option");
if (invert)
xtables_error(PARAMETER_PROBLEM,
"policy match: can't invert --strict option");
info->flags |= XT_POLICY_MATCH_STRICT;
break;
case '4':
if (e->match.reqid)
xtables_error(PARAMETER_PROBLEM,
"policy match: double --reqid option");
e->match.reqid = 1;
e->invert.reqid = invert;
if (!xtables_strtoui(optarg, NULL, &num, 0, UINT32_MAX))
xtables_param_act(XTF_BAD_VALUE, "policy", "--spi", optarg);
e->reqid = num;
break;
case '5':
if (e->match.spi)
xtables_error(PARAMETER_PROBLEM,
"policy match: double --spi option");
e->match.spi = 1;
e->invert.spi = invert;
if (!xtables_strtoui(optarg, NULL, &num, 0, UINT32_MAX))
xtables_param_act(XTF_BAD_VALUE, "policy", "--spi", optarg);
e->spi = num;
break;
case '6':
if (e->match.saddr)
xtables_error(PARAMETER_PROBLEM,
"policy match: double --tunnel-src option");
if (family == NFPROTO_IPV6)
xtables_ip6parse_any(optarg, &addr6, &mask6, &naddr);
else
xtables_ipparse_any(optarg, &addr, &mask, &naddr);
if (naddr > 1)
xtables_error(PARAMETER_PROBLEM,
"policy match: name resolves to multiple IPs");
e->match.saddr = 1;
e->invert.saddr = invert;
if (family == NFPROTO_IPV6) {
memcpy(&e->saddr.a6, addr6, sizeof(*addr6));
memcpy(&e->smask.a6, &mask6, sizeof(mask6));
} else {
e->saddr.a4 = addr[0];
e->smask.a4 = mask;
}
break;
case '7':
if (e->match.daddr)
xtables_error(PARAMETER_PROBLEM,
"policy match: double --tunnel-dst option");
if (family == NFPROTO_IPV6)
xtables_ip6parse_any(optarg, &addr6, &mask6, &naddr);
else
xtables_ipparse_any(optarg, &addr, &mask, &naddr);
if (naddr > 1)
xtables_error(PARAMETER_PROBLEM,
"policy match: name resolves to multiple IPs");
e->match.daddr = 1;
e->invert.daddr = invert;
if (family == NFPROTO_IPV6) {
memcpy(&e->daddr.a6, addr6, sizeof(*addr6));
memcpy(&e->dmask.a6, &mask6, sizeof(mask6));
} else {
e->daddr.a4 = addr[0];
e->dmask.a4 = mask;
}
break;
case '8':
if (e->match.proto)
xtables_error(PARAMETER_PROBLEM,
"policy match: double --proto option");
e->proto = xtables_parse_protocol(optarg);
if (e->proto != IPPROTO_AH && e->proto != IPPROTO_ESP &&
e->proto != IPPROTO_COMP)
xtables_error(PARAMETER_PROBLEM,
"policy match: protocol must ah/esp/ipcomp");
e->match.proto = 1;
e->invert.proto = invert;
break;
case '9':
if (e->match.mode)
xtables_error(PARAMETER_PROBLEM,
"policy match: double --mode option");
mode = parse_mode(optarg);
e->match.mode = 1;
e->invert.mode = invert;
e->mode = mode;
break;
case 'a':
if (invert)
xtables_error(PARAMETER_PROBLEM,
"policy match: can't invert --next option");
if (++info->len == XT_POLICY_MAX_ELEM)
xtables_error(PARAMETER_PROBLEM,
"policy match: maximum policy depth reached");
break;
default:
return 0;
}
return 1;
}
static int
conntrack_mt_parse(int c, bool invert, unsigned int *flags,
struct xt_conntrack_mtinfo2 *info)
{
unsigned int port;
char *p;
switch (c) {
case '1': /* --ctstate */
conntrack_ps_states(info, optarg);
info->match_flags |= XT_CONNTRACK_STATE;
if (invert)
info->invert_flags |= XT_CONNTRACK_STATE;
break;
case '2': /* --ctproto */
/* Canonicalize into lower case */
for (p = optarg; *p != '\0'; ++p)
*p = tolower(*p);
info->l4proto = xtables_parse_protocol(optarg);
if (info->l4proto == 0 && (info->invert_flags & XT_INV_PROTO))
xtables_error(PARAMETER_PROBLEM, "conntrack: rule would "
"never match protocol");
info->match_flags |= XT_CONNTRACK_PROTO;
if (invert)
info->invert_flags |= XT_CONNTRACK_PROTO;
break;
case '7': /* --ctstatus */
conntrack_ps_statuses(info, optarg);
info->match_flags |= XT_CONNTRACK_STATUS;
if (invert)
info->invert_flags |= XT_CONNTRACK_STATUS;
break;
case '8': /* --ctexpire */
conntrack_ps_expires(info, optarg);
info->match_flags |= XT_CONNTRACK_EXPIRES;
if (invert)
info->invert_flags |= XT_CONNTRACK_EXPIRES;
break;
case 'a': /* --ctorigsrcport */
if (!xtables_strtoui(optarg, NULL, &port, 0, UINT16_MAX))
xtables_param_act(XTF_BAD_VALUE, "conntrack",
"--ctorigsrcport", optarg);
info->match_flags |= XT_CONNTRACK_ORIGSRC_PORT;
info->origsrc_port = htons(port);
if (invert)
info->invert_flags |= XT_CONNTRACK_ORIGSRC_PORT;
break;
case 'b': /* --ctorigdstport */
if (!xtables_strtoui(optarg, NULL, &port, 0, UINT16_MAX))
xtables_param_act(XTF_BAD_VALUE, "conntrack",
"--ctorigdstport", optarg);
info->match_flags |= XT_CONNTRACK_ORIGDST_PORT;
info->origdst_port = htons(port);
if (invert)
info->invert_flags |= XT_CONNTRACK_ORIGDST_PORT;
break;
case 'c': /* --ctreplsrcport */
if (!xtables_strtoui(optarg, NULL, &port, 0, UINT16_MAX))
xtables_param_act(XTF_BAD_VALUE, "conntrack",
"--ctreplsrcport", optarg);
info->match_flags |= XT_CONNTRACK_REPLSRC_PORT;
info->replsrc_port = htons(port);
if (invert)
info->invert_flags |= XT_CONNTRACK_REPLSRC_PORT;
break;
case 'd': /* --ctrepldstport */
if (!xtables_strtoui(optarg, NULL, &port, 0, UINT16_MAX))
xtables_param_act(XTF_BAD_VALUE, "conntrack",
"--ctrepldstport", optarg);
info->match_flags |= XT_CONNTRACK_REPLDST_PORT;
info->repldst_port = htons(port);
if (invert)
info->invert_flags |= XT_CONNTRACK_REPLDST_PORT;
break;
case 'e': /* --ctdir */
xtables_param_act(XTF_NO_INVERT, "conntrack", "--ctdir", invert);
if (strcasecmp(optarg, "ORIGINAL") == 0) {
info->match_flags |= XT_CONNTRACK_DIRECTION;
info->invert_flags &= ~XT_CONNTRACK_DIRECTION;
} else if (strcasecmp(optarg, "REPLY") == 0) {
info->match_flags |= XT_CONNTRACK_DIRECTION;
info->invert_flags |= XT_CONNTRACK_DIRECTION;
} else {
xtables_param_act(XTF_BAD_VALUE, "conntrack", "--ctdir", optarg);
}
break;
default:
return false;
}
*flags = info->match_flags;
return true;
}
static int conntrack_parse(int c, char **argv, int invert, unsigned int *flags,
const void *entry, struct xt_entry_match **match)
{
struct xt_conntrack_info *sinfo = (void *)(*match)->data;
char *protocol = NULL;
unsigned int naddrs = 0;
struct in_addr *addrs = NULL;
switch (c) {
case '1':
xtables_check_inverse(optarg, &invert, &optind, 0);
parse_states(argv[optind-1], sinfo);
if (invert) {
sinfo->invflags |= XT_CONNTRACK_STATE;
}
sinfo->flags |= XT_CONNTRACK_STATE;
break;
case '2':
xtables_check_inverse(optarg, &invert, &optind, 0);
if(invert)
sinfo->invflags |= XT_CONNTRACK_PROTO;
/* Canonicalize into lower case */
for (protocol = argv[optind-1]; *protocol; protocol++)
*protocol = tolower(*protocol);
protocol = argv[optind-1];
sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum =
xtables_parse_protocol(protocol);
if (sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.protonum == 0
&& (sinfo->invflags & XT_INV_PROTO))
xtables_error(PARAMETER_PROBLEM,
"rule would never match protocol");
sinfo->flags |= XT_CONNTRACK_PROTO;
break;
case '3':
xtables_check_inverse(optarg, &invert, &optind, 0);
if (invert)
sinfo->invflags |= XT_CONNTRACK_ORIGSRC;
xtables_ipparse_any(argv[optind-1], &addrs,
&sinfo->sipmsk[IP_CT_DIR_ORIGINAL],
&naddrs);
if(naddrs > 1)
xtables_error(PARAMETER_PROBLEM,
"multiple IP addresses not allowed");
if(naddrs == 1) {
sinfo->tuple[IP_CT_DIR_ORIGINAL].src.ip = addrs[0].s_addr;
}
sinfo->flags |= XT_CONNTRACK_ORIGSRC;
break;
case '4':
xtables_check_inverse(optarg, &invert, &optind, 0);
if (invert)
sinfo->invflags |= XT_CONNTRACK_ORIGDST;
xtables_ipparse_any(argv[optind-1], &addrs,
&sinfo->dipmsk[IP_CT_DIR_ORIGINAL],
&naddrs);
if(naddrs > 1)
xtables_error(PARAMETER_PROBLEM,
"multiple IP addresses not allowed");
if(naddrs == 1) {
sinfo->tuple[IP_CT_DIR_ORIGINAL].dst.ip = addrs[0].s_addr;
}
sinfo->flags |= XT_CONNTRACK_ORIGDST;
break;
case '5':
xtables_check_inverse(optarg, &invert, &optind, 0);
if (invert)
sinfo->invflags |= XT_CONNTRACK_REPLSRC;
xtables_ipparse_any(argv[optind-1], &addrs,
&sinfo->sipmsk[IP_CT_DIR_REPLY],
&naddrs);
if(naddrs > 1)
xtables_error(PARAMETER_PROBLEM,
"multiple IP addresses not allowed");
if(naddrs == 1) {
sinfo->tuple[IP_CT_DIR_REPLY].src.ip = addrs[0].s_addr;
}
sinfo->flags |= XT_CONNTRACK_REPLSRC;
break;
case '6':
xtables_check_inverse(optarg, &invert, &optind, 0);
if (invert)
sinfo->invflags |= XT_CONNTRACK_REPLDST;
xtables_ipparse_any(argv[optind-1], &addrs,
&sinfo->dipmsk[IP_CT_DIR_REPLY],
&naddrs);
if(naddrs > 1)
xtables_error(PARAMETER_PROBLEM,
"multiple IP addresses not allowed");
if(naddrs == 1) {
sinfo->tuple[IP_CT_DIR_REPLY].dst.ip = addrs[0].s_addr;
}
sinfo->flags |= XT_CONNTRACK_REPLDST;
break;
case '7':
xtables_check_inverse(optarg, &invert, &optind, 0);
parse_statuses(argv[optind-1], sinfo);
if (invert) {
sinfo->invflags |= XT_CONNTRACK_STATUS;
}
sinfo->flags |= XT_CONNTRACK_STATUS;
break;
case '8':
xtables_check_inverse(optarg, &invert, &optind, 0);
parse_expires(argv[optind-1], sinfo);
if (invert) {
sinfo->invflags |= XT_CONNTRACK_EXPIRES;
}
sinfo->flags |= XT_CONNTRACK_EXPIRES;
break;
default:
return 0;
}
*flags = sinfo->flags;
return 1;
}
int do_commandx(struct nft_handle *h, int argc, char *argv[], char **table,
bool restore)
{
struct iptables_command_state cs;
int verbose = 0;
const char *chain = NULL;
const char *policy = NULL, *newname = NULL;
unsigned int rulenum = 0, command = 0;
int ret = 1;
struct xtables_match *m;
struct xtables_rule_match *matchp;
struct xtables_target *t;
struct xtables_args args = {
.family = h->family,
};
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;
h->ops = nft_family_ops_lookup(h->family);
if (h->ops == NULL)
xtables_error(PARAMETER_PROBLEM, "Unknown family");
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:fbvnt:m:xc:g:46",
opts, NULL)) != -1) {
switch (cs.c) {
/*
* Command selection
*/
case 'A':
add_command(&command, CMD_APPEND, CMD_NONE,
cs.invert);
chain = optarg;
break;
case 'C':
add_command(&command, CMD_CHECK, CMD_NONE,
cs.invert);
chain = optarg;
break;
case 'D':
add_command(&command, CMD_DELETE, CMD_NONE,
cs.invert);
chain = optarg;
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!') {
rulenum = parse_rulenumber(argv[optind++]);
command = CMD_DELETE_NUM;
}
break;
case 'R':
add_command(&command, CMD_REPLACE, CMD_NONE,
cs.invert);
chain = optarg;
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
rulenum = parse_rulenumber(argv[optind++]);
else
xtables_error(PARAMETER_PROBLEM,
"-%c requires a rule number",
cmd2char(CMD_REPLACE));
break;
case 'I':
add_command(&command, CMD_INSERT, CMD_NONE,
cs.invert);
chain = optarg;
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
rulenum = parse_rulenumber(argv[optind++]);
else rulenum = 1;
break;
case 'L':
add_command(&command, CMD_LIST,
CMD_ZERO | CMD_ZERO_NUM, cs.invert);
if (optarg) chain = optarg;
else if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
chain = argv[optind++];
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
rulenum = parse_rulenumber(argv[optind++]);
break;
case 'S':
add_command(&command, CMD_LIST_RULES,
CMD_ZERO|CMD_ZERO_NUM, cs.invert);
if (optarg) chain = optarg;
else if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
chain = argv[optind++];
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
rulenum = parse_rulenumber(argv[optind++]);
break;
case 'F':
add_command(&command, CMD_FLUSH, CMD_NONE,
cs.invert);
if (optarg) chain = optarg;
else if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
chain = argv[optind++];
break;
case 'Z':
add_command(&command, CMD_ZERO, CMD_LIST|CMD_LIST_RULES,
cs.invert);
if (optarg) chain = optarg;
else if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
chain = argv[optind++];
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!') {
rulenum = parse_rulenumber(argv[optind++]);
command = CMD_ZERO_NUM;
}
break;
case 'N':
if (optarg && (*optarg == '-' || *optarg == '!'))
xtables_error(PARAMETER_PROBLEM,
"chain name not allowed to start "
"with `%c'\n", *optarg);
if (xtables_find_target(optarg, XTF_TRY_LOAD))
xtables_error(PARAMETER_PROBLEM,
"chain name may not clash "
"with target name\n");
add_command(&command, CMD_NEW_CHAIN, CMD_NONE,
cs.invert);
chain = optarg;
break;
case 'X':
add_command(&command, CMD_DELETE_CHAIN, CMD_NONE,
cs.invert);
if (optarg) chain = optarg;
else if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
chain = argv[optind++];
break;
case 'E':
add_command(&command, CMD_RENAME_CHAIN, CMD_NONE,
cs.invert);
chain = optarg;
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
newname = argv[optind++];
else
xtables_error(PARAMETER_PROBLEM,
"-%c requires old-chain-name and "
"new-chain-name",
cmd2char(CMD_RENAME_CHAIN));
break;
case 'P':
add_command(&command, CMD_SET_POLICY, CMD_NONE,
cs.invert);
chain = optarg;
if (optind < argc && argv[optind][0] != '-'
&& argv[optind][0] != '!')
policy = argv[optind++];
else
xtables_error(PARAMETER_PROBLEM,
"-%c requires a chain and a policy",
cmd2char(CMD_SET_POLICY));
break;
case 'h':
if (!optarg)
optarg = argv[optind];
/* 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, &args.invflags,
cs.invert);
/* Canonicalize into lower case */
for (cs.protocol = optarg; *cs.protocol; cs.protocol++)
*cs.protocol = tolower(*cs.protocol);
cs.protocol = optarg;
args.proto = xtables_parse_protocol(cs.protocol);
if (args.proto == 0 && (args.invflags & XT_INV_PROTO))
xtables_error(PARAMETER_PROBLEM,
"rule would never match protocol");
/* This needs to happen here to parse extensions */
h->ops->proto_parse(&cs, &args);
break;
case 's':
set_option(&cs.options, OPT_SOURCE, &args.invflags,
cs.invert);
args.shostnetworkmask = optarg;
break;
case 'd':
set_option(&cs.options, OPT_DESTINATION,
&args.invflags, cs.invert);
args.dhostnetworkmask = optarg;
break;
#ifdef IPT_F_GOTO
case 'g':
set_option(&cs.options, OPT_JUMP, &args.invflags,
cs.invert);
args.goto_set = true;
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, &args.invflags,
cs.invert);
xtables_parse_interface(optarg,
args.iniface,
args.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, &args.invflags,
cs.invert);
xtables_parse_interface(optarg,
args.outiface,
args.outiface_mask);
break;
case 'f':
if (args.family == AF_INET6) {
xtables_error(PARAMETER_PROBLEM,
"`-f' is not supported in IPv6, "
"use -m frag instead");
}
set_option(&cs.options, OPT_FRAGMENT, &args.invflags,
cs.invert);
args.flags |= IPT_F_FRAG;
break;
case 'v':
if (!verbose)
set_option(&cs.options, OPT_VERBOSE,
&args.invflags, cs.invert);
verbose++;
break;
case 'm':
command_match(&cs);
break;
case 'n':
set_option(&cs.options, OPT_NUMERIC, &args.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, &args.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 'w':
if (restore) {
xtables_error(PARAMETER_PROBLEM,
"You cannot use `-w' from "
"iptables-restore");
}
break;
case '0':
set_option(&cs.options, OPT_LINENUMBERS,
&args.invflags, cs.invert);
break;
case 'M':
xtables_modprobe_program = optarg;
break;
case 'c':
set_option(&cs.options, OPT_COUNTERS, &args.invflags,
cs.invert);
args.pcnt = optarg;
args.bcnt = strchr(args.pcnt + 1, ',');
if (args.bcnt)
args.bcnt++;
if (!args.bcnt && optind < argc &&
argv[optind][0] != '-' &&
argv[optind][0] != '!')
args.bcnt = argv[optind++];
if (!args.bcnt)
xtables_error(PARAMETER_PROBLEM,
"-%c requires packet and byte counter",
opt2char(OPT_COUNTERS));
if (sscanf(args.pcnt, "%llu", &args.pcnt_cnt) != 1)
xtables_error(PARAMETER_PROBLEM,
"-%c packet counter not numeric",
opt2char(OPT_COUNTERS));
if (sscanf(args.bcnt, "%llu", &args.bcnt_cnt) != 1)
xtables_error(PARAMETER_PROBLEM,
"-%c byte counter not numeric",
opt2char(OPT_COUNTERS));
break;
case '4':
if (args.family != AF_INET)
exit_tryhelp(2);
h->ops = nft_family_ops_lookup(args.family);
break;
case '6':
args.family = AF_INET6;
xtables_set_nfproto(AF_INET6);
h->ops = nft_family_ops_lookup(args.family);
if (h->ops == NULL)
xtables_error(PARAMETER_PROBLEM,
"Unknown family");
break;
case 1: /* non option */
if (optarg[0] == '!' && optarg[1] == '\0') {
if (cs.invert)
xtables_error(PARAMETER_PROBLEM,
"multiple consecutive ! not"
" allowed");
cs.invert = TRUE;
optarg[0] = '\0';
continue;
}
fprintf(stderr, "Bad argument `%s'\n", optarg);
exit_tryhelp(2);
default:
if (command_default(&cs, &xtables_globals) == 1)
/* cf. ip6tables.c */
continue;
break;
}
cs.invert = FALSE;
}
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 !");
/* Set only if required, needed by xtables-restore */
if (h->family == AF_UNSPEC)
h->family = args.family;
h->ops->post_parse(command, &cs, &args);
if (command == CMD_REPLACE &&
(args.s.naddrs != 1 || args.d.naddrs != 1))
xtables_error(PARAMETER_PROBLEM, "Replacement rule does not "
"specify a unique address");
generic_opt_check(command, cs.options);
if (chain != NULL && strlen(chain) >= XT_EXTENSION_MAXNAMELEN)
xtables_error(PARAMETER_PROBLEM,
"chain name `%s' too long (must be under %u chars)",
chain, XT_EXTENSION_MAXNAMELEN);
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);
}
/*
* Contrary to what iptables does, we assume that any jumpto
* is a custom chain jumps (if no target is found). Later on,
* nf_table will spot the error if the chain does not exists.
*/
}
switch (command) {
case CMD_APPEND:
ret = add_entry(chain, *table, &cs, 0, h->family,
args.s, args.d, cs.options&OPT_VERBOSE,
h, true);
break;
case CMD_DELETE:
ret = delete_entry(chain, *table, &cs, h->family,
args.s, args.d, cs.options&OPT_VERBOSE, h);
break;
case CMD_DELETE_NUM:
ret = nft_rule_delete_num(h, chain, *table, rulenum - 1, verbose);
break;
case CMD_CHECK:
ret = check_entry(chain, *table, &cs, h->family,
args.s, args.d, cs.options&OPT_VERBOSE, h);
break;
case CMD_REPLACE:
ret = replace_entry(chain, *table, &cs, rulenum - 1,
h->family, args.s, args.d,
cs.options&OPT_VERBOSE, h);
break;
case CMD_INSERT:
ret = add_entry(chain, *table, &cs, rulenum - 1, h->family,
args.s, args.d, cs.options&OPT_VERBOSE, h,
false);
break;
case CMD_FLUSH:
ret = nft_rule_flush(h, chain, *table);
break;
case CMD_ZERO:
ret = nft_chain_zero_counters(h, chain, *table);
break;
case CMD_ZERO_NUM:
ret = nft_rule_zero_counters(h, chain, *table, rulenum - 1);
break;
case CMD_LIST:
case CMD_LIST|CMD_ZERO:
case CMD_LIST|CMD_ZERO_NUM:
ret = list_entries(h, chain, *table,
rulenum,
cs.options&OPT_VERBOSE,
cs.options&OPT_NUMERIC,
cs.options&OPT_EXPANDED,
cs.options&OPT_LINENUMBERS);
if (ret && (command & CMD_ZERO))
ret = nft_chain_zero_counters(h, chain, *table);
if (ret && (command & CMD_ZERO_NUM))
ret = nft_rule_zero_counters(h, chain, *table,
rulenum - 1);
break;
case CMD_LIST_RULES:
case CMD_LIST_RULES|CMD_ZERO:
case CMD_LIST_RULES|CMD_ZERO_NUM:
ret = list_rules(h, chain, *table, rulenum, cs.options&OPT_VERBOSE);
if (ret && (command & CMD_ZERO))
ret = nft_chain_zero_counters(h, chain, *table);
if (ret && (command & CMD_ZERO_NUM))
ret = nft_rule_zero_counters(h, chain, *table,
rulenum - 1);
break;
case CMD_NEW_CHAIN:
ret = nft_chain_user_add(h, chain, *table);
break;
case CMD_DELETE_CHAIN:
ret = nft_chain_user_del(h, chain, *table);
break;
case CMD_RENAME_CHAIN:
ret = nft_chain_user_rename(h, chain, *table, newname);
break;
case CMD_SET_POLICY:
ret = nft_chain_set(h, *table, chain, policy, NULL);
if (ret < 0)
xtables_error(PARAMETER_PROBLEM, "Wrong policy `%s'\n",
policy);
break;
default:
/* We should never reach this... */
exit_tryhelp(2);
}
/* if (verbose > 1)
dump_entries(*handle); */
xtables_rule_matches_free(&cs.matches);
if (h->family == AF_INET) {
free(args.s.addr.v4);
free(args.s.mask.v4);
free(args.d.addr.v4);
free(args.d.mask.v4);
} else if (h->family == AF_INET6) {
free(args.s.addr.v6);
free(args.s.mask.v6);
free(args.d.addr.v6);
free(args.d.mask.v6);
}
xtables_free_opts(1);
return ret;
}
