Exemplo n.º 1
0
static int
print_ipt(struct action_util *au, FILE * f, struct rtattr *arg)
{
	struct rtattr *tb[TCA_IPT_MAX + 1];
	struct xt_entry_target *t = NULL;

	if (arg == NULL)
		return -1;

	set_lib_dir();

	parse_rtattr_nested(tb, TCA_IPT_MAX, arg);

	if (tb[TCA_IPT_TABLE] == NULL) {
		fprintf(f, "[NULL ipt table name ] assuming mangle ");
	} else {
		fprintf(f, "tablename: %s ",
			rta_getattr_str(tb[TCA_IPT_TABLE]));
	}

	if (tb[TCA_IPT_HOOK] == NULL) {
		fprintf(f, "[NULL ipt hook name ]\n ");
		return -1;
	} else {
		__u32 hook;

		hook = rta_getattr_u32(tb[TCA_IPT_HOOK]);
		fprintf(f, " hook: %s\n", ipthooks[hook]);
	}

	if (tb[TCA_IPT_TARG] == NULL) {
		fprintf(f, "\t[NULL ipt target parameters ]\n");
		return -1;
	} else {
		struct xtables_target *m = NULL;

		t = RTA_DATA(tb[TCA_IPT_TARG]);
		m = find_target(t->u.user.name, TRY_LOAD);
		if (m != NULL) {
			if (build_st(m, t) < 0) {
				fprintf(stderr, " %s error\n", m->name);
				return -1;
			}

			opts =
			    merge_options(opts, m->extra_opts,
					  &m->option_offset);
		} else {
			fprintf(stderr, " failed to find target %s\n\n",
				t->u.user.name);
			return -1;
		}
		fprintf(f, "\ttarget ");
		m->print(NULL, m->t, 0);
		if (tb[TCA_IPT_INDEX] == NULL) {
			fprintf(f, " [NULL ipt target index ]\n");
		} else {
			__u32 index;

			index = rta_getattr_u32(tb[TCA_IPT_INDEX]);
			fprintf(f, "\n\tindex %u", index);
		}

		if (tb[TCA_IPT_CNT]) {
			struct tc_cnt *c  = RTA_DATA(tb[TCA_IPT_CNT]);

			fprintf(f, " ref %d bind %d", c->refcnt, c->bindcnt);
		}
		if (show_stats) {
			if (tb[TCA_IPT_TM]) {
				struct tcf_t *tm = RTA_DATA(tb[TCA_IPT_TM]);

				print_tm(f, tm);
			}
		}
		fprintf(f, "\n");

	}
	free_opts(opts);

	return 0;
}
Exemplo n.º 2
0
static int parse_ipt(struct action_util *a, int *argc_p,
		     char ***argv_p, int tca_id, struct nlmsghdr *n)
{
	struct xtables_target *m = NULL;
	struct ipt_entry fw;
	struct rtattr *tail;
	int c;
	int rargc = *argc_p;
	char **argv = *argv_p;
	int argc = 0, iargc = 0;
	char k[FILTER_NAMESZ];
	int size = 0;
	int iok = 0, ok = 0;
	__u32 hook = 0, index = 0;

	set_lib_dir();

	{
		int i;

		for (i = 0; i < rargc; i++) {
			if (NULL == argv[i] || 0 == strcmp(argv[i], "action")) {
				break;
			}
		}
		iargc = argc = i;
	}

	if (argc <= 2) {
		fprintf(stderr, "bad arguments to ipt %d vs %d\n", argc, rargc);
		return -1;
	}

	while (1) {
		c = getopt_long(argc, argv, "j:", opts, NULL);
		if (c == -1)
			break;
		switch (c) {
		case 'j':
			m = find_target(optarg, TRY_LOAD);
			if (m != NULL) {

				if (build_st(m, NULL) < 0) {
					printf(" %s error\n", m->name);
					return -1;
				}
				opts =
				    merge_options(opts, m->extra_opts,
						  &m->option_offset);
			} else {
				fprintf(stderr, " failed to find target %s\n\n", optarg);
				return -1;
			}
			ok++;
			break;

		default:
			memset(&fw, 0, sizeof(fw));
			if (m) {
				m->parse(c - m->option_offset, argv, 0,
					 &m->tflags, NULL, &m->t);
			} else {
				fprintf(stderr, " failed to find target %s\n\n", optarg);
				return -1;

			}
			ok++;
			break;

		}
	}

	if (iargc > optind) {
		if (matches(argv[optind], "index") == 0) {
			if (get_u32(&index, argv[optind + 1], 10)) {
				fprintf(stderr, "Illegal \"index\"\n");
				free_opts(opts);
				return -1;
			}
			iok++;

			optind += 2;
		}
	}

	if (!ok && !iok) {
		fprintf(stderr, " ipt Parser BAD!! (%s)\n", *argv);
		return -1;
	}

	/* check that we passed the correct parameters to the target */
	if (m)
		m->final_check(m->tflags);

	{
		struct tcmsg *t = NLMSG_DATA(n);

		if (t->tcm_parent != TC_H_ROOT
		    && t->tcm_parent == TC_H_MAJ(TC_H_INGRESS)) {
			hook = NF_IP_PRE_ROUTING;
		} else {
			hook = NF_IP_POST_ROUTING;
		}
	}

	tail = addattr_nest(n, MAX_MSG, tca_id);
	fprintf(stdout, "tablename: %s hook: %s\n ", tname, ipthooks[hook]);
	fprintf(stdout, "\ttarget: ");

	if (m)
		m->print(NULL, m->t, 0);
	fprintf(stdout, " index %d\n", index);

	if (strlen(tname) > 16) {
		size = 16;
		k[15] = 0;
	} else {
		size = 1 + strlen(tname);
	}
	strncpy(k, tname, size);

	addattr_l(n, MAX_MSG, TCA_IPT_TABLE, k, size);
	addattr_l(n, MAX_MSG, TCA_IPT_HOOK, &hook, 4);
	addattr_l(n, MAX_MSG, TCA_IPT_INDEX, &index, 4);
	if (m)
		addattr_l(n, MAX_MSG, TCA_IPT_TARG, m->t, m->t->u.target_size);
	addattr_nest_end(n, tail);

	argc -= optind;
	argv += optind;
	*argc_p = rargc - iargc;
	*argv_p = argv;

	optind = 0;
	free_opts(opts);
	/* Clear flags if target will be used again */
        m->tflags = 0;
        m->used = 0;
	/* Free allocated memory */
	if (m->t)
	    free(m->t);


	return 0;

}
Exemplo n.º 3
0
static int
print_ipt(struct action_util *au,FILE * f, struct rtattr *arg)
{
	struct rtattr *tb[TCA_IPT_MAX + 1];
	struct xt_entry_target *t = NULL;

	if (arg == NULL)
		return -1;

	xtables_init_all(&tcipt_globals, NFPROTO_IPV4);
	set_lib_dir();

	parse_rtattr_nested(tb, TCA_IPT_MAX, arg);

	if (tb[TCA_IPT_TABLE] == NULL) {
		fprintf(f, "[NULL ipt table name ] assuming mangle ");
	} else {
		fprintf(f, "tablename: %s ",
			rta_getattr_str(tb[TCA_IPT_TABLE]));
	}

	if (tb[TCA_IPT_HOOK] == NULL) {
		fprintf(f, "[NULL ipt hook name ]\n ");
		return -1;
	} else {
		__u32 hook;
		hook = rta_getattr_u32(tb[TCA_IPT_HOOK]);
		fprintf(f, " hook: %s \n", ipthooks[hook]);
	}

	if (tb[TCA_IPT_TARG] == NULL) {
		fprintf(f, "\t[NULL ipt target parameters ] \n");
		return -1;
	} else {
		struct xtables_target *m = NULL;
		t = RTA_DATA(tb[TCA_IPT_TARG]);
		m = xtables_find_target(t->u.user.name, XTF_TRY_LOAD);
		if (NULL != m) {
			if (0 > build_st(m, t)) {
				fprintf(stderr, " %s error \n", m->name);
				return -1;
			}

			tcipt_globals.opts =
			    xtables_merge_options(
#if (XTABLES_VERSION_CODE >= 6)
				                  tcipt_globals.orig_opts,
#endif
				                  tcipt_globals.opts,
			                          m->extra_opts,
			                          &m->option_offset);
		} else {
			fprintf(stderr, " failed to find target %s\n\n",
				t->u.user.name);
			return -1;
		}
		fprintf(f, "\ttarget ");
		m->print(NULL, m->t, 0);
		if (tb[TCA_IPT_INDEX] == NULL) {
			fprintf(f, " [NULL ipt target index ]\n");
		} else {
			__u32 index;
			index = rta_getattr_u32(tb[TCA_IPT_INDEX]);
			fprintf(f, " \n\tindex %d", index);
		}

		if (tb[TCA_IPT_CNT]) {
			struct tc_cnt *c  = RTA_DATA(tb[TCA_IPT_CNT]);;
			fprintf(f, " ref %d bind %d", c->refcnt, c->bindcnt);
		}
		if (show_stats) {
			if (tb[TCA_IPT_TM]) {
				struct tcf_t *tm = RTA_DATA(tb[TCA_IPT_TM]);
				print_tm(f,tm);
			}
		}
		fprintf(f, " \n");

	}
	xtables_free_opts(1);

	return 0;
}
Exemplo n.º 4
0
static int parse_ipt(struct action_util *a,int *argc_p,
		     char ***argv_p, int tca_id, struct nlmsghdr *n)
{
	struct xtables_target *m = NULL;
	struct ipt_entry fw;
	struct rtattr *tail;

	int c;
	int rargc = *argc_p;
	char **argv = *argv_p;
	int argc = 0, iargc = 0;
	char k[16];
	int size = 0;
	int iok = 0, ok = 0;
	__u32 hook = 0, index = 0;
	struct option *opts = NULL;

	xtables_init_all(&tcipt_globals, NFPROTO_IPV4);
	set_lib_dir();

	{
		int i;
		for (i = 0; i < rargc; i++) {
			if (NULL == argv[i] || 0 == strcmp(argv[i], "action")) {
				break;
			}
		}
		iargc = argc = i;
	}

	if (argc <= 2) {
		fprintf(stderr,"bad arguements to ipt %d vs %d \n", argc, rargc);
		return -1;
	}

	while (1) {
		c = getopt_long(argc, argv, "j:", tcipt_globals.opts, NULL);
		if (c == -1)
			break;
		switch (c) {
		case 'j':
			m = xtables_find_target(optarg, XTF_TRY_LOAD);
			if (NULL != m) {

				if (0 > build_st(m, NULL)) {
					printf(" %s error \n", m->name);
					return -1;
				}
#if (XTABLES_VERSION_CODE >= 6)
			opts = xtables_options_xfrm(tcipt_globals.orig_opts,
						    tcipt_globals.opts,
						    m->x6_options,
						    &m->option_offset);
#else
			opts = xtables_merge_options(tcipt_globals.orig_opts,
						     tcipt_globals.opts,
						     m->extra_opts,
						     &m->option_offset);
#endif
			if (opts == NULL) {
				fprintf(stderr, " failed to find aditional options for target %s\n\n", optarg);
				return -1;
			} else
				tcipt_globals.opts = opts;
			} else {
				fprintf(stderr," failed to find target %s\n\n", optarg);
				return -1;
			}
			ok++;
			break;

		default:
			memset(&fw, 0, sizeof (fw));
#if (XTABLES_VERSION_CODE >= 6)
		if (m != NULL && m->x6_parse != NULL ) {
			xtables_option_tpcall(c, argv, 0 , m, NULL);
#else
		if (m != NULL && m->parse != NULL ) {
			m->parse(c - m->option_offset, argv, 0, &m->tflags,
				 NULL, &m->t);
#endif
			} else {
				fprintf(stderr,"failed to find target %s\n\n", optarg);
				return -1;

			}
			ok++;
			break;
		}
	}

	if (iargc > optind) {
		if (matches(argv[optind], "index") == 0) {
			if (get_u32(&index, argv[optind + 1], 10)) {
				fprintf(stderr, "Illegal \"index\"\n");
				xtables_free_opts(1);
				return -1;
			}
			iok++;

			optind += 2;
		}
	}

	if (!ok && !iok) {
		fprintf(stderr," ipt Parser BAD!! (%s)\n", *argv);
		return -1;
	}

	/* check that we passed the correct parameters to the target */
#if (XTABLES_VERSION_CODE >= 6)
	if (m)
		xtables_option_tfcall(m);
#else
	if (m && m->final_check)
		m->final_check(m->tflags);
#endif

	{
		struct tcmsg *t = NLMSG_DATA(n);
		if (t->tcm_parent != TC_H_ROOT
		    && t->tcm_parent == TC_H_MAJ(TC_H_INGRESS)) {
			hook = NF_IP_PRE_ROUTING;
		} else {
			hook = NF_IP_POST_ROUTING;
		}
	}

	tail = NLMSG_TAIL(n);
	addattr_l(n, MAX_MSG, tca_id, NULL, 0);
	fprintf(stdout, "tablename: %s hook: %s\n ", tname, ipthooks[hook]);
	fprintf(stdout, "\ttarget: ");

	if (m)
		m->print(NULL, m->t, 0);
	fprintf(stdout, " index %d\n", index);

	if (strlen(tname) > 16) {
		size = 16;
		k[15] = 0;
	} else {
		size = 1 + strlen(tname);
	}
	strncpy(k, tname, size);

	addattr_l(n, MAX_MSG, TCA_IPT_TABLE, k, size);
	addattr_l(n, MAX_MSG, TCA_IPT_HOOK, &hook, 4);
	addattr_l(n, MAX_MSG, TCA_IPT_INDEX, &index, 4);
	if (m)
		addattr_l(n, MAX_MSG, TCA_IPT_TARG, m->t, m->t->u.target_size);
	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;

	argc -= optind;
	argv += optind;
	*argc_p = rargc - iargc;
	*argv_p = argv;

	optind = 0;
	xtables_free_opts(1);

	if (m) {
		/* Clear flags if target will be used again */
		m->tflags = 0;
		m->used = 0;
		/* Free allocated memory */
		if (m->t)
			free(m->t);
	}

	return 0;

}

static int
print_ipt(struct action_util *au,FILE * f, struct rtattr *arg)
{
	struct rtattr *tb[TCA_IPT_MAX + 1];
	struct xt_entry_target *t = NULL;
	struct option *opts = NULL;

	if (arg == NULL)
		return -1;

	xtables_init_all(&tcipt_globals, NFPROTO_IPV4);
	set_lib_dir();

	parse_rtattr_nested(tb, TCA_IPT_MAX, arg);

	if (tb[TCA_IPT_TABLE] == NULL) {
		fprintf(f, "[NULL ipt table name ] assuming mangle ");
	} else {
		fprintf(f, "tablename: %s ",
			rta_getattr_str(tb[TCA_IPT_TABLE]));
	}

	if (tb[TCA_IPT_HOOK] == NULL) {
		fprintf(f, "[NULL ipt hook name ]\n ");
		return -1;
	} else {
		__u32 hook;
		hook = rta_getattr_u32(tb[TCA_IPT_HOOK]);
		fprintf(f, " hook: %s \n", ipthooks[hook]);
	}

	if (tb[TCA_IPT_TARG] == NULL) {
		fprintf(f, "\t[NULL ipt target parameters ] \n");
		return -1;
	} else {
		struct xtables_target *m = NULL;
		t = RTA_DATA(tb[TCA_IPT_TARG]);
		m = xtables_find_target(t->u.user.name, XTF_TRY_LOAD);
		if (NULL != m) {
			if (0 > build_st(m, t)) {
				fprintf(stderr, " %s error \n", m->name);
				return -1;
			}

#if (XTABLES_VERSION_CODE >= 6)
		opts = xtables_options_xfrm(tcipt_globals.orig_opts,
					    tcipt_globals.opts,
					    m->x6_options,
					    &m->option_offset);
#else
		opts = xtables_merge_options(tcipt_globals.orig_opts,
					     tcipt_globals.opts,
					     m->extra_opts,
					     &m->option_offset);
#endif
	if (opts == NULL) {
		fprintf(stderr, " failed to find aditional options for target %s\n\n", optarg);
		return -1;
	} else
		tcipt_globals.opts = opts;
		} else {
			fprintf(stderr, " failed to find target %s\n\n",
				t->u.user.name);
			return -1;
		}
		fprintf(f, "\ttarget ");
		m->print(NULL, m->t, 0);
		if (tb[TCA_IPT_INDEX] == NULL) {
			fprintf(f, " [NULL ipt target index ]\n");
		} else {
			__u32 index;
			index = rta_getattr_u32(tb[TCA_IPT_INDEX]);
			fprintf(f, " \n\tindex %d", index);
		}

		if (tb[TCA_IPT_CNT]) {
			struct tc_cnt *c  = RTA_DATA(tb[TCA_IPT_CNT]);;
			fprintf(f, " ref %d bind %d", c->refcnt, c->bindcnt);
		}
		if (show_stats) {
			if (tb[TCA_IPT_TM]) {
				struct tcf_t *tm = RTA_DATA(tb[TCA_IPT_TM]);
				print_tm(f,tm);
			}
		}
		fprintf(f, " \n");

	}
	xtables_free_opts(1);

	return 0;
}

struct action_util xt_action_util = {
        .id = "xt",
        .parse_aopt = parse_ipt,
        .print_aopt = print_ipt,
};
Exemplo n.º 5
0
static int parse_ipt(struct action_util *a,int *argc_p,
		     char ***argv_p, int tca_id, struct nlmsghdr *n)
{
	struct xtables_target *m = NULL;
	struct ipt_entry fw;
	struct rtattr *tail;
	int c;
	int rargc = *argc_p;
	char **argv = *argv_p;
	int argc = 0, iargc = 0;
	char k[16];
	int size = 0;
	int iok = 0, ok = 0;
	__u32 hook = 0, index = 0;

	xtables_init_all(&tcipt_globals, NFPROTO_IPV4);
	set_lib_dir();

	{
		int i;
		for (i = 0; i < rargc; i++) {
			if (NULL == argv[i] || 0 == strcmp(argv[i], "action")) {
				break;
			}
		}
		iargc = argc = i;
	}

	if (argc <= 2) {
		fprintf(stderr,"bad arguements to ipt %d vs %d \n", argc, rargc);
		return -1;
	}

	while (1) {
		c = getopt_long(argc, argv, "j:", tcipt_globals.opts, NULL);
		if (c == -1)
			break;
		switch (c) {
		case 'j':
			m = xtables_find_target(optarg, XTF_TRY_LOAD);
			if (NULL != m) {

				if (0 > build_st(m, NULL)) {
					printf(" %s error \n", m->name);
					return -1;
				}
				tcipt_globals.opts =
				    xtables_merge_options(
#if (XTABLES_VERSION_CODE >= 6)
				        tcipt_globals.orig_opts,
#endif
				        tcipt_globals.opts,
				        m->extra_opts,
				        &m->option_offset);
			} else {
				fprintf(stderr," failed to find target %s\n\n", optarg);
				return -1;
			}
			ok++;
			break;

		default:
			memset(&fw, 0, sizeof (fw));
			if (m) {
				m->parse(c - m->option_offset, argv, 0,
					 &m->tflags, NULL, &m->t);
			} else {
				fprintf(stderr," failed to find target %s\n\n", optarg);
				return -1;

			}
			ok++;
			break;

		}
	}

	if (iargc > optind) {
		if (matches(argv[optind], "index") == 0) {
			if (get_u32(&index, argv[optind + 1], 10)) {
				fprintf(stderr, "Illegal \"index\"\n");
				xtables_free_opts(1);
				return -1;
			}
			iok++;

			optind += 2;
		}
	}

	if (!ok && !iok) {
		fprintf(stderr," ipt Parser BAD!! (%s)\n", *argv);
		return -1;
	}

	
	if (m && m->final_check)
		m->final_check(m->tflags);

	{
		struct tcmsg *t = NLMSG_DATA(n);
		if (t->tcm_parent != TC_H_ROOT
		    && t->tcm_parent == TC_H_MAJ(TC_H_INGRESS)) {
			hook = NF_IP_PRE_ROUTING;
		} else {
			hook = NF_IP_POST_ROUTING;
		}
	}

	tail = NLMSG_TAIL(n);
	addattr_l(n, MAX_MSG, tca_id, NULL, 0);
	fprintf(stdout, "tablename: %s hook: %s\n ", tname, ipthooks[hook]);
	fprintf(stdout, "\ttarget: ");

	if (m)
		m->print(NULL, m->t, 0);
	fprintf(stdout, " index %d\n", index);

	if (strlen(tname) > 16) {
		size = 16;
		k[15] = 0;
	} else {
		size = 1 + strlen(tname);
	}
	strncpy(k, tname, size);

	addattr_l(n, MAX_MSG, TCA_IPT_TABLE, k, size);
	addattr_l(n, MAX_MSG, TCA_IPT_HOOK, &hook, 4);
	addattr_l(n, MAX_MSG, TCA_IPT_INDEX, &index, 4);
	if (m)
		addattr_l(n, MAX_MSG, TCA_IPT_TARG, m->t, m->t->u.target_size);
	tail->rta_len = (void *) NLMSG_TAIL(n) - (void *) tail;

	argc -= optind;
	argv += optind;
	*argc_p = rargc - iargc;
	*argv_p = argv;

	optind = 0;
	xtables_free_opts(1);

	if (m) {
		
		m->tflags = 0;
		m->used = 0;
		
		if (m->t)
			free(m->t);
	}

	return 0;

}