/**
* ipset_parse_iptimeout - parse IPv4|IPv6 address and timeout
* @session: session structure
* @opt: option kind of the data
* @str: string to parse
*
* Parse string as an IPv4|IPv6 address and timeout parameter.
* If family is not set yet in the data blob, INET is assumed.
* The value is stored in the data blob of the session.
*
* Compatibility parser.
*
* Returns 0 on success or a negative error code.
*/
int
ipset_parse_iptimeout(struct ipset_session *session,
enum ipset_opt opt, const char *str)
{
char *tmp, *saved, *a;
int err;
assert(session);
assert(opt == IPSET_OPT_IP);
assert(str);
/* IP,timeout */
if (ipset_data_flags_test(ipset_session_data(session),
IPSET_FLAG(IPSET_OPT_TIMEOUT)))
return syntax_err("mixed syntax, timeout already specified");
tmp = saved = strdup(str);
if (saved == NULL)
return ipset_err(session,
"Cannot allocate memory to duplicate %s.",
str);
a = elem_separator(tmp);
if (a == NULL) {
free(saved);
return syntax_err("Missing separator from %s", str);
}
*a++ = '\0';
err = parse_ip(session, opt, tmp, IPADDR_ANY);
if (!err)
err = ipset_parse_uint32(session, IPSET_OPT_TIMEOUT, a);
free(saved);
return err;
}
/**
* ipset_parse_family - parse INET|INET6 family names
* @session: session structure
* @opt: option kind of the data
* @str: string to parse
*
* Parse string as an INET|INET6 family name.
* The value is stored in the data blob of the session.
*
* Returns 0 on success or a negative error code.
*/
int
ipset_parse_family(struct ipset_session *session,
enum ipset_opt opt, const char *str)
{
struct ipset_data *data;
uint8_t family;
assert(session);
assert(opt == IPSET_OPT_FAMILY);
assert(str);
data = ipset_session_data(session);
if (ipset_data_flags_test(data, IPSET_FLAG(IPSET_OPT_FAMILY)))
syntax_err("protocol family may not be specified "
"multiple times");
if (STREQ(str, "inet") || STREQ(str, "ipv4") || STREQ(str, "-4"))
family = AF_INET;
else if (STREQ(str, "inet6") || STREQ(str, "ipv6") || STREQ(str, "-6"))
family = AF_INET6;
else if (STREQ(str, "any") || STREQ(str, "unspec"))
family = AF_UNSPEC;
else
return syntax_err("unknown INET family %s", str);
return ipset_data_set(data, opt, &family);
}
/**
* ipset_parse_name_compat - parse setname as element
* @session: session structure
* @opt: option kind of the data
* @str: string to parse
*
* Parse string as a setname or a setname element to add to a set.
* The pattern "setname,before|after,setname" is recognized and
* parsed.
* The value is stored in the data blob of the session.
*
* Returns 0 on success or a negative error code.
*/
int
ipset_parse_name_compat(struct ipset_session *session,
enum ipset_opt opt, const char *str)
{
char *saved;
char *a = NULL, *b = NULL, *tmp;
int err, before = 0;
const char *sep = IPSET_ELEM_SEPARATOR;
struct ipset_data *data;
assert(session);
assert(opt == IPSET_OPT_NAME);
assert(str);
data = ipset_session_data(session);
if (ipset_data_flags_test(data, IPSET_FLAG(IPSET_OPT_NAMEREF)))
syntax_err("mixed syntax, before|after option already used");
tmp = saved = strdup(str);
if (saved == NULL)
return ipset_err(session,
"Cannot allocate memory to duplicate %s.",
str);
if ((a = elem_separator(tmp)) != NULL) {
/* setname,[before|after,setname */
*a++ = '\0';
if ((b = elem_separator(a)) != NULL)
*b++ = '\0';
if (b == NULL
|| !(STREQ(a, "before") || STREQ(a, "after"))) {
err = ipset_err(session, "you must specify elements "
"as setname%s[before|after]%ssetname",
sep, sep);
goto out;
}
before = STREQ(a, "before");
}
check_setname(tmp, saved);
if ((err = ipset_data_set(data, opt, tmp)) != 0 || b == NULL)
goto out;
check_setname(b, saved);
if ((err = ipset_data_set(data,
IPSET_OPT_NAMEREF, b)) != 0)
goto out;
if (before)
err = ipset_data_set(data, IPSET_OPT_BEFORE, &before);
out:
free(saved);
return err;
}
/**
* ipset_print_proto_port - print proto:port
* @buf: printing buffer
* @len: length of available buffer space
* @data: data blob
* @opt: the option kind
* @env: environment flags
*
* Print protocol and port to output buffer.
*
* Return lenght of printed string or error size.
*/
int
ipset_print_proto_port(char *buf, unsigned int len,
const struct ipset_data *data,
enum ipset_opt opt ASSERT_UNUSED,
uint8_t env UNUSED)
{
int size, offset = 0;
assert(buf);
assert(len > 0);
assert(data);
assert(opt == IPSET_OPT_PORT || opt == IPSET_OPT_PORT2);
if (ipset_data_flags_test(data, IPSET_FLAG(IPSET_OPT_PROTO))) {
uint8_t proto = *(const uint8_t *) ipset_data_get(data,
IPSET_OPT_PROTO);
size = ipset_print_proto(buf, len, data, IPSET_OPT_PROTO, env);
SNPRINTF_FAILURE(size, len, offset);
if (len < 2)
return -ENOSPC;
size = snprintf(buf + offset, len, IPSET_PROTO_SEPARATOR);
SNPRINTF_FAILURE(size, len, offset);
switch (proto) {
case IPPROTO_TCP:
case IPPROTO_SCTP:
case IPPROTO_UDP:
case IPPROTO_UDPLITE:
break;
case IPPROTO_ICMP:
size = ipset_print_icmp(buf + offset, len, data,
opt, env);
goto out;
case IPPROTO_ICMPV6:
size = ipset_print_icmpv6(buf + offset, len, data,
opt, env);
goto out;
default:
break;
}
}
size = ipset_print_port(buf + offset, len, data, opt, env);
out:
SNPRINTF_FAILURE(size, len, offset);
return offset;
}
/**
* ipset_parse_after - parse string as "after" reference setname
* @session: session structure
* @opt: option kind of the data
* @str: string to parse
*
* Parse string as a "after" reference setname for list:set
* type of sets. The value is stored in the data blob of the session.
*
* Returns 0 on success or a negative error code.
*/
int
ipset_parse_after(struct ipset_session *session,
enum ipset_opt opt, const char *str)
{
struct ipset_data *data;
assert(session);
assert(opt == IPSET_OPT_NAMEREF);
assert(str);
data = ipset_session_data(session);
if (ipset_data_flags_test(data, IPSET_FLAG(IPSET_OPT_NAMEREF)))
syntax_err("mixed syntax, before|after option already used");
check_setname(str, NULL);
return ipset_data_set(data, opt, str);
}
/**
* ipset_print_name - print setname element string
* @buf: printing buffer
* @len: length of available buffer space
* @data: data blob
* @opt: the option kind
* @env: environment flags
*
* Print setname element string to output buffer.
*
* Return lenght of printed string or error size.
*/
int
ipset_print_name(char *buf, unsigned int len,
const struct ipset_data *data, enum ipset_opt opt,
uint8_t env UNUSED)
{
const char *name;
int size, offset = 0;
assert(buf);
assert(len > 0);
assert(data);
assert(opt == IPSET_OPT_NAME);
if (len < 2*IPSET_MAXNAMELEN + 2 + strlen("before"))
return -1;
name = ipset_data_get(data, opt);
assert(name);
size = snprintf(buf, len, "%s", name);
SNPRINTF_FAILURE(size, len, offset);
if (ipset_data_test(data, IPSET_OPT_NAMEREF)) {
bool before = false;
if (ipset_data_flags_test(data, IPSET_FLAG(IPSET_OPT_FLAGS))) {
const uint32_t *flags =
ipset_data_get(data, IPSET_OPT_FLAGS);
before = (*flags) & IPSET_FLAG_BEFORE;
}
size = snprintf(buf + offset, len,
" %s %s", before ? "before" : "after",
(const char *) ipset_data_get(data,
IPSET_OPT_NAMEREF));
SNPRINTF_FAILURE(size, len, offset);
}
return offset;
}
