Example #1
0
static int
do_commit(void)
{
	unsigned i;
	int ret = 1;

	for(i = 0; i < num_tables; ++i)
	{
		if(tables[i].handle)
		{
#ifdef IP6T
			ret = ip6tc_commit(tables[i].handle);
			if (!ret)
				fprintf(stderr, "commit failed on table %s: %s\n", tables[i].name, ip6tc_strerror(errno));
			ip6tc_free(tables[i].handle);
			tables[i].handle = NULL;
#else
			ret = iptc_commit(tables[i].handle);
			if (!ret)
				fprintf(stderr, "commit failed on table %s: %s\n", tables[i].name, iptc_strerror(errno));
			iptc_free(tables[i].handle);
			tables[i].handle = NULL;
#endif
		}
	}

	return ret;
}
Example #2
0
static int
ip6tc_init_verify_append(const char * table,
                         const char * chain,
                         struct ip6t_entry * e)
{
	IP6TC_HANDLE h;

	h = ip6tc_init(table);
	if(!h) {
		syslog(LOG_ERR, "ip6tc_init error : %s", ip6tc_strerror(errno));
		return -1;
	}
	if(!ip6tc_is_chain(chain, h)) {
		syslog(LOG_ERR, "chain %s not found", chain);
		goto error;
	}
	if(!ip6tc_append_entry(chain, e, h)) {
		syslog(LOG_ERR, "ip6tc_append_entry() error : %s", ip6tc_strerror(errno));
		goto error;
	}
	if(!ip6tc_commit(h)) {
		syslog(LOG_ERR, "ip6tc_commit() error : %s", ip6tc_strerror(errno));
		goto error;
	}
	return 0;	/* ok */
error:
	ip6tc_free(h);
	return -1;
}
int
main(int argc, char *argv[])
{
	int ret;
	char *table = "filter";
	ip6tc_handle_t handle = NULL;

	program_name = "ip6tables";
	program_version = IPTABLES_VERSION;

	lib_dir = getenv("IP6TABLES_LIB_DIR");
	if (!lib_dir)
		lib_dir = IP6T_LIB_DIR;

#ifdef NO_SHARED_LIBS
	init_extensions();
#endif

	ret = do_command6(argc, argv, &table, &handle);
	if (ret)
		ret = ip6tc_commit(&handle);

	if (!ret)
		fprintf(stderr, "ip6tables: %s\n",
			ip6tc_strerror(errno));

	exit(!ret);
}
Example #4
0
int
delete_pinhole(unsigned short uid)
{
	struct pinhole_t * p;
	IP6TC_HANDLE h;
	const struct ip6t_entry * e;
	const struct ip6t_entry_match *match = NULL;
	/*const struct ip6t_entry_target *target = NULL;*/
	unsigned int index;

	p = get_pinhole(uid);
	if(!p)
		return -2;	/* not found */

	h = ip6tc_init("filter");
	if(!h) {
		syslog(LOG_ERR, "ip6tc_init error : %s", ip6tc_strerror(errno));
		return -1;
	}
	if(!ip6tc_is_chain(miniupnpd_v6_filter_chain, h)) {
		syslog(LOG_ERR, "chain %s not found", miniupnpd_v6_filter_chain);
		goto error;
	}
	index = 0;
	for(e = ip6tc_first_rule(miniupnpd_v6_filter_chain, h);
	    e;
	    e = ip6tc_next_rule(e, h)) {
		if((e->ipv6.proto == p->proto) &&
		   (0 == memcmp(&e->ipv6.src, &p->saddr, sizeof(e->ipv6.src))) &&
		   (0 == memcmp(&e->ipv6.dst, &p->daddr, sizeof(e->ipv6.dst)))) {
			const struct ip6t_tcp * info;
			match = (const struct ip6t_entry_match *)&e->elems;
			info = (const struct ip6t_tcp *)&match->data;
			if((info->spts[0] == p->sport) && (info->dpts[0] == p->dport)) {
				if(!ip6tc_delete_num_entry(miniupnpd_v6_filter_chain, index, h)) {
					syslog(LOG_ERR, "ip6tc_delete_num_entry(%s,%u,...): %s",
					       miniupnpd_v6_filter_chain, index, ip6tc_strerror(errno));
					goto error;
				}
				if(!ip6tc_commit(h)) {
					syslog(LOG_ERR, "ip6tc_commit(): %s",
					       ip6tc_strerror(errno));
					goto error;
				}
				ip6tc_free(h);
				LIST_REMOVE(p, entries);
				return 0;	/* ok */
			}
		}
		index++;
	}
	ip6tc_free(h);
	syslog(LOG_WARNING, "delete_pinhole() rule with PID=%hu not found", uid);
	LIST_REMOVE(p, entries);
	return -2;	/* not found */
error:
	ip6tc_free(h);
	return -1;
}
int
main(int argc, char *argv[])
#endif
{
	int ret;
	char *table = "filter";
	struct ip6tc_handle *handle = NULL;

	ip6tables_globals.program_name = "ip6tables";
#if !defined(ALL_INCLUSIVE) && !defined(NO_SHARED_LIBS)
	ret = xtables_init_all(&ip6tables_globals, NFPROTO_IPV6);
	if (ret < 0) {
		fprintf(stderr, "%s/%s Failed to initialize xtables\n",
				ip6tables_globals.program_name,
				ip6tables_globals.program_version);
		exit(1);
	}
#endif

#if defined(ALL_INCLUSIVE) || defined(NO_SHARED_LIBS)
	init_extensions();
#endif

	ret = do_command6(argc, argv, &table, &handle);
	if (ret) {
		ret = ip6tc_commit(handle);
		ip6tc_free(handle);
	}

	if (!ret) {
		if (errno == EINVAL) {
			fprintf(stderr, "ip6tables: %s. "
					"Run `dmesg' for more information.\n",
				ip6tc_strerror(errno));
		} else {
			fprintf(stderr, "[%s %d]ip6tables: %s.\n",
				__FILE__,__LINE__,ip6tc_strerror(errno));
		}
	}

	exit(!ret);
}
Example #6
0
int ip6tables_close ( struct ip6tc_handle* handle, int updated )
{
	int res = 1;
	int sav_errno ;

	if (updated) {
		if ( ( res = ip6tc_commit ( handle ) ) != 1 )
		{
			sav_errno = errno ;
			log_message(LOG_INFO, "iptc_commit returned %d: %s", res, ip6tc_strerror (sav_errno) );
		}
	}

	ip6tc_free ( handle ) ;

	if ( res == 1 )
		return 0 ;
	else
		return ( sav_errno ) ;
}
int main(int argc, char *argv[])
#endif
{
	struct ip6tc_handle *handle = NULL;
	char buffer[10240];
	int c;
	char curtable[IP6T_TABLE_MAXNAMELEN + 1];
	FILE *in;
	int in_table = 0, testing = 0;

	line = 0;

	ip6tables_globals.program_name = "ip6tables-restore";
	c = xtables_init_all(&ip6tables_globals, NFPROTO_IPV6);
	if (c < 0) {
		fprintf(stderr, "%s/%s Failed to initialize xtables\n",
				ip6tables_globals.program_name,
				ip6tables_globals.program_version);
		exit(1);
	}
#if defined(ALL_INCLUSIVE) || defined(NO_SHARED_LIBS)
	init_extensions();
	init_extensions6();
#endif

	while ((c = getopt_long(argc, argv, "bcvthnM:", options, NULL)) != -1) {
		switch (c) {
			case 'b':
				binary = 1;
				break;
			case 'c':
				counters = 1;
				break;
			case 'v':
				verbose = 1;
				break;
			case 't':
				testing = 1;
				break;
			case 'h':
				print_usage("ip6tables-restore",
					    IPTABLES_VERSION);
				break;
			case 'n':
				noflush = 1;
				break;
			case 'M':
				xtables_modprobe_program = optarg;
				break;
		}
	}

	if (optind == argc - 1) {
		in = fopen(argv[optind], "re");
		if (!in) {
			fprintf(stderr, "Can't open %s: %s\n", argv[optind],
				strerror(errno));
			exit(1);
		}
	}
	else if (optind < argc) {
		fprintf(stderr, "Unknown arguments found on commandline\n");
		exit(1);
	}
	else in = stdin;

	/* Grab standard input. */
	while (fgets(buffer, sizeof(buffer), in)) {
		int ret = 0;

		line++;
		if (buffer[0] == '\n')
			continue;
		else if (buffer[0] == '#') {
			if (verbose)
				fputs(buffer, stdout);
			continue;
		} else if ((strcmp(buffer, "COMMIT\n") == 0) && (in_table)) {
			if (!testing) {
				DEBUGP("Calling commit\n");
				ret = ip6tc_commit(handle);
				ip6tc_free(handle);
				handle = NULL;
			} else {
				DEBUGP("Not calling commit, testing\n");
				ret = 1;
			}
			in_table = 0;
		} else if ((buffer[0] == '*') && (!in_table)) {
			/* New table */
			char *table;

			table = strtok(buffer+1, " \t\n");
			DEBUGP("line %u, table '%s'\n", line, table);
			if (!table) {
				xtables_error(PARAMETER_PROBLEM,
					"%s: line %u table name invalid\n",
					ip6tables_globals.program_name,
					line);
				exit(1);
			}
			strncpy(curtable, table, IP6T_TABLE_MAXNAMELEN);
			curtable[IP6T_TABLE_MAXNAMELEN] = '\0';

			if (handle)
				ip6tc_free(handle);

			handle = create_handle(table);
			if (noflush == 0) {
				DEBUGP("Cleaning all chains of table '%s'\n",
					table);
				for_each_chain6(flush_entries6, verbose, 1,
						handle);

				DEBUGP("Deleting all user-defined chains "
				       "of table '%s'\n", table);
				for_each_chain6(delete_chain6, verbose, 0,
						handle);
			}

			ret = 1;
			in_table = 1;

		} else if ((buffer[0] == ':') && (in_table)) {
			/* New chain. */
			char *policy, *chain;

			chain = strtok(buffer+1, " \t\n");
			DEBUGP("line %u, chain '%s'\n", line, chain);
			if (!chain) {
				xtables_error(PARAMETER_PROBLEM,
					   "%s: line %u chain name invalid\n",
					   ip6tables_globals.program_name,
					   line);
				exit(1);
			}

			if (strlen(chain) >= XT_EXTENSION_MAXNAMELEN)
				xtables_error(PARAMETER_PROBLEM,
					   "Invalid chain name `%s' "
					   "(%u chars max)",
					   chain, XT_EXTENSION_MAXNAMELEN - 1);

			if (ip6tc_builtin(chain, handle) <= 0) {
				if (noflush && ip6tc_is_chain(chain, handle)) {
					DEBUGP("Flushing existing user defined chain '%s'\n", chain);
					if (!ip6tc_flush_entries(chain, handle))
						xtables_error(PARAMETER_PROBLEM,
							   "error flushing chain "
							   "'%s':%s\n", chain,
							   strerror(errno));
				} else {
					DEBUGP("Creating new chain '%s'\n", chain);
					if (!ip6tc_create_chain(chain, handle))
						xtables_error(PARAMETER_PROBLEM,
							   "error creating chain "
							   "'%s':%s\n", chain,
							   strerror(errno));
				}
			}

			policy = strtok(NULL, " \t\n");
			DEBUGP("line %u, policy '%s'\n", line, policy);
			if (!policy) {
				xtables_error(PARAMETER_PROBLEM,
					   "%s: line %u policy invalid\n",
					   ip6tables_globals.program_name,
					   line);
				exit(1);
			}

			if (strcmp(policy, "-") != 0) {
				struct ip6t_counters count;

				if (counters) {
					char *ctrs;
					ctrs = strtok(NULL, " \t\n");

					if (!ctrs || !parse_counters(ctrs, &count))
						xtables_error(PARAMETER_PROBLEM,
							  "invalid policy counters "
							  "for chain '%s'\n", chain);

				} else {
					memset(&count, 0,
					       sizeof(struct ip6t_counters));
				}

				DEBUGP("Setting policy of chain %s to %s\n",
					chain, policy);

				if (!ip6tc_set_policy(chain, policy, &count,
						     handle))
					xtables_error(OTHER_PROBLEM,
						"Can't set policy `%s'"
						" on `%s' line %u: %s\n",
						policy, chain, line,
						ip6tc_strerror(errno));
			}

			ret = 1;

		} else if (in_table) {
			int a;
			char *ptr = buffer;
			char *pcnt = NULL;
			char *bcnt = NULL;
			char *parsestart;

			/* the parser */
			char *curchar;
			int quote_open, escaped;
			size_t param_len;

			/* reset the newargv */
			newargc = 0;

			if (buffer[0] == '[') {
				/* we have counters in our input */
				ptr = strchr(buffer, ']');
				if (!ptr)
					xtables_error(PARAMETER_PROBLEM,
						   "Bad line %u: need ]\n",
						   line);

				pcnt = strtok(buffer+1, ":");
				if (!pcnt)
					xtables_error(PARAMETER_PROBLEM,
						   "Bad line %u: need :\n",
						   line);

				bcnt = strtok(NULL, "]");
				if (!bcnt)
					xtables_error(PARAMETER_PROBLEM,
						   "Bad line %u: need ]\n",
						   line);

				/* start command parsing after counter */
				parsestart = ptr + 1;
			} else {
				/* start command parsing at start of line */
				parsestart = buffer;
			}

			add_argv(argv[0]);
			add_argv("-t");
			add_argv(curtable);

			if (counters && pcnt && bcnt) {
				add_argv("--set-counters");
				add_argv((char *) pcnt);
				add_argv((char *) bcnt);
			}

			/* After fighting with strtok enough, here's now
			 * a 'real' parser. According to Rusty I'm now no
			 * longer a real hacker, but I can live with that */

			quote_open = 0;
			escaped = 0;
			param_len = 0;

			for (curchar = parsestart; *curchar; curchar++) {
				char param_buffer[1024];

				if (quote_open) {
					if (escaped) {
						param_buffer[param_len++] = *curchar;
						escaped = 0;
						continue;
					} else if (*curchar == '\\') {
						escaped = 1;
						continue;
					} else if (*curchar == '"') {
						quote_open = 0;
						*curchar = ' ';
					} else {
						param_buffer[param_len++] = *curchar;
						continue;
					}
				} else {
					if (*curchar == '"') {
						quote_open = 1;
						continue;
					}
				}

				if (*curchar == ' '
				    || *curchar == '\t'
				    || * curchar == '\n') {
					if (!param_len) {
						/* two spaces? */
						continue;
					}

					param_buffer[param_len] = '\0';

					/* check if table name specified */
					if (!strncmp(param_buffer, "-t", 2)
                                            || !strncmp(param_buffer, "--table", 8)) {
						xtables_error(PARAMETER_PROBLEM,
						   "Line %u seems to have a "
						   "-t table option.\n", line);
						exit(1);
					}

					add_argv(param_buffer);
					param_len = 0;
				} else {
					/* regular character, copy to buffer */
					param_buffer[param_len++] = *curchar;

					if (param_len >= sizeof(param_buffer))
						xtables_error(PARAMETER_PROBLEM,
						   "Parameter too long!");
				}
			}

			DEBUGP("calling do_command6(%u, argv, &%s, handle):\n",
				newargc, curtable);

			for (a = 0; a < newargc; a++)
				DEBUGP("argv[%u]: %s\n", a, newargv[a]);

			ret = do_command6(newargc, newargv,
					 &newargv[2], &handle);

			free_argv();
			fflush(stdout);
		}
		if (!ret) {
			fprintf(stderr, "%s: line %u failed\n",
					ip6tables_globals.program_name,
					line);
			exit(1);
		}
	}
	if (in_table) {
		fprintf(stderr, "%s: COMMIT expected at line %u\n",
				ip6tables_globals.program_name,
				line + 1);
		exit(1);
	}

	if (in != NULL)
		fclose(in);
	return 0;
}
Example #8
0
int main(int argc, char *argv[])
{
	ip6tc_handle_t handle;
	char buffer[10240];
	unsigned int line = 0;
	int c;
	char curtable[IP6T_TABLE_MAXNAMELEN + 1];
	FILE *in;
	const char *modprobe = 0;

	program_name = "ip6tables-restore";
	program_version = IPTABLES_VERSION;

#ifdef NO_SHARED_LIBS
	init_extensions();
#endif

	while ((c = getopt_long(argc, argv, "bcvhnM:", options, NULL)) != -1) {
		switch (c) {
			case 'b':
				binary = 1;
				break;
			case 'c':
				counters = 1;
				break;
			case 'v':
				verbose = 1;
				break;
			case 'h':
				print_usage("ip6tables-restore",
					    IPTABLES_VERSION);
				break;
			case 'n':
				noflush = 1;
				break;
			case 'M':
				modprobe = optarg;
				break;
		}
	}
	
	if (optind == argc - 1) {
		in = fopen(argv[optind], "r");
		if (!in) {
			fprintf(stderr, "Can't open %s: %s", argv[optind],
				strerror(errno));
			exit(1);
		}
	}
	else if (optind < argc) {
		fprintf(stderr, "Unknown arguments found on commandline");
		exit(1);
	}
	else in = stdin;
	
	/* Grab standard input. */
	while (fgets(buffer, sizeof(buffer), in)) {
		int ret;

		line++;
		if (buffer[0] == '\n') continue;
		else if (buffer[0] == '#') {
			if (verbose) fputs(buffer, stdout);
			continue;
		} else if (strcmp(buffer, "COMMIT\n") == 0) {
			DEBUGP("Calling commit\n");
			ret = ip6tc_commit(&handle);
		} else if (buffer[0] == '*') {
			/* New table */
			char *table;

			table = strtok(buffer+1, " \t\n");
			DEBUGP("line %u, table '%s'\n", line, table);
			if (!table) {
				exit_error(PARAMETER_PROBLEM, 
					"%s: line %u table name invalid\n",
					program_name, line);
				exit(1);
			}
			strncpy(curtable, table, IP6T_TABLE_MAXNAMELEN);

			handle = create_handle(table, modprobe);
			if (noflush == 0) {
				DEBUGP("Cleaning all chains of table '%s'\n",
					table);
				for_each_chain(flush_entries, verbose, 1, 
						&handle);
	
				DEBUGP("Deleting all user-defined chains "
				       "of table '%s'\n", table);
				for_each_chain(delete_chain, verbose, 0, 
						&handle) ;
			}

			ret = 1;

		} else if (buffer[0] == ':') {
			/* New chain. */
			char *policy, *chain;

			chain = strtok(buffer+1, " \t\n");
			DEBUGP("line %u, chain '%s'\n", line, chain);
			if (!chain) {
				exit_error(PARAMETER_PROBLEM,
					   "%s: line %u chain name invalid\n",
					   program_name, line);
				exit(1);
			}

			if (!ip6tc_builtin(chain, handle)) {
				DEBUGP("Creating new chain '%s'\n", chain);
				if (!ip6tc_create_chain(chain, &handle))
					exit_error(PARAMETER_PROBLEM,
						   "error creating chain "
						   "'%s':%s\n", chain,
						   strerror(errno));
			}

			policy = strtok(NULL, " \t\n");
			DEBUGP("line %u, policy '%s'\n", line, policy);
			if (!policy) {
				exit_error(PARAMETER_PROBLEM,
					   "%s: line %u policy invalid\n",
					   program_name, line);
				exit(1);
			}

			if (strcmp(policy, "-") != 0) {
				struct ip6t_counters count;

				if (counters) {
					char *ctrs;
					ctrs = strtok(NULL, " \t\n");

					parse_counters(ctrs, &count);

				} else {
					memset(&count, 0, 
					       sizeof(struct ip6t_counters));
				}

				DEBUGP("Setting policy of chain %s to %s\n",
					chain, policy);

				if (!ip6tc_set_policy(chain, policy, &count,
						     &handle))
					exit_error(OTHER_PROBLEM,
						"Can't set policy `%s'"
						" on `%s' line %u: %s\n",
						chain, policy, line,
						ip6tc_strerror(errno));
			}

			ret = 1;

		} else {
			int a;
			char *ptr = buffer;
			char *pcnt = NULL;
			char *bcnt = NULL;
			char *parsestart;

			/* the parser */
			char *param_start, *curchar;
			int quote_open;

			/* reset the newargv */
			newargc = 0;

			if (buffer[0] == '[') {
				/* we have counters in our input */
				ptr = strchr(buffer, ']');
				if (!ptr)
					exit_error(PARAMETER_PROBLEM,
						   "Bad line %u: need ]\n",
						   line);

				pcnt = strtok(buffer+1, ":");
				if (!pcnt)
					exit_error(PARAMETER_PROBLEM,
						   "Bad line %u: need :\n",
						   line);

				bcnt = strtok(NULL, "]");
				if (!bcnt)
					exit_error(PARAMETER_PROBLEM,
						   "Bad line %u: need ]\n",
						   line);

				/* start command parsing after counter */
				parsestart = ptr + 1;
			} else {
				/* start command parsing at start of line */
				parsestart = buffer;
			}

			add_argv(argv[0]);
			add_argv("-t");
			add_argv((char *) &curtable);
			
			if (counters && pcnt && bcnt) {
				add_argv("--set-counters");
				add_argv((char *) pcnt);
				add_argv((char *) bcnt);
			}

			/* After fighting with strtok enough, here's now
			 * a 'real' parser. According to Rusty I'm now no
			 * longer a real hacker, but I can live with that */

			quote_open = 0;
			param_start = parsestart;
			
			for (curchar = parsestart; *curchar; curchar++) {
				if (*curchar == '"') {
					if (quote_open) {
						quote_open = 0;
						*curchar = ' ';
					} else {
						quote_open = 1;
						param_start++;
					}
				} 
				if (*curchar == ' '
				    || *curchar == '\t'
				    || * curchar == '\n') {
					char param_buffer[1024];
					int param_len = curchar-param_start;

					if (quote_open)
						continue;

					if (!param_len) {
						/* two spaces? */
						param_start++;
						continue;
					}
					
					/* end of one parameter */
					strncpy(param_buffer, param_start,
						param_len);
					*(param_buffer+param_len) = '\0';

					/* check if table name specified */
					if (!strncmp(param_buffer, "-t", 3)
                                            || !strncmp(param_buffer, "--table", 8)) {
						exit_error(PARAMETER_PROBLEM, 
						   "Line %u seems to have a "
						   "-t table option.\n", line);
						exit(1);
					}

					add_argv(param_buffer);
					param_start += param_len + 1;
				} else {
					/* regular character, skip */
				}
			}

			DEBUGP("calling do_command6(%u, argv, &%s, handle):\n",
				newargc, curtable);

			for (a = 0; a < newargc; a++)
				DEBUGP("argv[%u]: %s\n", a, newargv[a]);

			ret = do_command6(newargc, newargv, 
					 &newargv[2], &handle);

			free_argv();
		}
		if (!ret) {
			fprintf(stderr, "%s: line %u failed\n",
					program_name, line);
			exit(1);
		}
	}

	return 0;
}