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ipset.c
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/*
* DPVS is a software load balancer (Virtual Server) based on DPDK.
*
* Copyright (C) 2021 iQIYI (www.iqiyi.com).
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "dpip.h"
#include "conf/ipset.h"
#include "sockopt.h"
#define HEADER_LEN 1024
#define MEMBER_LEN 1024
typedef int (*sort_compare_func)
(int af, const struct ipset_member *m1, const struct ipset_member *m2);
struct ipset_type {
char *name;
int (* parse)(char *arg);
int (* check)(void);
void (* dump_header)(char *buf, struct ipset_info *info);
int (* dump_member)(char *buf, struct ipset_member *m, int af);
sort_compare_func sort_compare;
};
// All supported ipset types
#define MAX_TYPE_NUM 64
struct ipset_type types[MAX_TYPE_NUM];
static struct ipset_param param;
static char *query_str;
static inline bool
ipv6_addr_any(const struct in6_addr *a)
{
return !(a->s6_addr32[0] | a->s6_addr32[1] |
a->s6_addr32[2] | a->s6_addr32[3]);
}
static inline bool
ipv6_addr_equal(const struct in6_addr *a1, const struct in6_addr *a2)
{
return !((a1->s6_addr32[0] ^ a2->s6_addr32[0]) &&
(a1->s6_addr32[1] ^ a2->s6_addr32[1]) &&
(a1->s6_addr32[2] ^ a2->s6_addr32[2]) &&
(a1->s6_addr32[3] ^ a2->s6_addr32[3]));
}
static inline int
is_zero_mac_addr(const uint8_t *mac)
{
const uint16_t *w = (const uint16_t *)mac;
return !(w[0] | w[1] | w[2]);
}
static int
types_string(char buf[], size_t bufsiz, int tokens_per_line, const char *prompt)
{
int i, j;
int indent, typelen, linelen, totallen;
indent = strlen(prompt);
if (tokens_per_line < 2 * indent || bufsiz < tokens_per_line)
return EDPVS_INVAL;
linelen = indent;
totallen = snprintf(buf, bufsiz, "%s", prompt);
if (totallen >= bufsiz)
return EDPVS_NOMEM;
for (i = 0; i < NELEMS(types); i++) {
if (!types[i].name)
break;
typelen = snprintf(&buf[totallen], bufsiz - totallen - 1,
i > 0 ? " | %s" : "%s", types[i].name);
totallen += typelen;
if (totallen >= bufsiz)
return EDPVS_NOMEM;
linelen += typelen;
if (linelen < tokens_per_line)
continue;
if (totallen + indent + 1 >= bufsiz)
return EDPVS_NOMEM;
buf[totallen++] = '\n';
for (j = 0; j < indent; j++)
buf[totallen++] = ' ';
linelen = indent;
}
snprintf(&buf[totallen], bufsiz - totallen - 1, "%s", " }");
return EDPVS_OK;
}
static void
ipset_help(void)
{
char type_names[1024];
if (types_string(type_names, sizeof(type_names), 80, " TYPE := { ") != EDPVS_OK)
fprintf(stderr, "Warn: Failed to get all ipset types.");
fprintf(stderr,
"Usage:\n"
" dpip ipset create SETNAME TYPE [ OPTIONS ]\n"
" dpip ipset destroy SETNAME\n"
" dpip ipset { add | del | test } SETNAME ENTRY [ ADTOPTS ]\n"
" dpip ipset { show | flush } [ SETNAME ]\n"
"Parameters:\n"
"%s\n"
" ENTRY := combinations of one or more comma seperated tokens below,\n"
" { { IP | NET } | PORT | MAC | IFACE }\n"
" IP := ipv4 or ipv6 string literal\n"
" NET := \"{ IP/prefix | IP(range from)[-IP(range end)] }\"\n"
" MAC := 6 bytes MAC address string literal\n"
" PORT := \"[{ tcp | udp | icmp | icmp6 }:]port1[-port2]\"\n"
" OPTIONS := { comment | range NET | hashsize NUM | maxelem NUM }\n"
" ADTOPTS := { comment STRING | nomatch (for add only) }\n"
" flag := { -F(--force) | { -4 | -6 } | -v }\n"
"Examples:\n"
" dpip ipset create foo bitmap:ip range 192.168.0.0/16 comment\n"
" dpip ipset add foo 192.168.0.1-192.168.0.5 comment \"test entry\"\n"
" dpip ipset show foo\n"
" dpip ipset flush foo\n"
" dpip ipset destroy foo\n"
" dpip -6 ipset create bar hash:net,port,iface hashsize 300 maxelem 1000\n"
" dpip ipset add bar 2001:beef::/64,udp:100,dpdk0\n"
" dpip -v ipset test bar 2001:beef::abcd,udp:100,dpdk0\n"
" dpip ipset del bar 2001:beef::/64,udp:100,dpdk0\n"
" dpip ipset destroy bar\n", type_names
);
}
/* ========================== parse =========================== */
/* { ip1-ip2 | ip/cidr } */
static int
addr_arg_parse(char *arg, struct inet_addr_range *range, uint8_t *cidr)
{
char *ip1, *ip2, *sep;
uint8_t *af = ¶m.option.family;
/* ip/cidr */
if (cidr && (sep = strstr(arg, "/"))) {
*sep++ = '\0';
*cidr = atoi(sep);
if (inet_pton(AF_INET6, arg, &range->min_addr.in6) <= 0) {
if (inet_pton(AF_INET, arg, &range->min_addr.in) <= 0)
return EDPVS_INVAL;
*af = AF_INET;
} else {
*af = AF_INET6;
}
range->max_addr = range->min_addr;
return EDPVS_OK;
}
/* ip1-ip2 */
ip1 = arg;
ip2 = strrchr(arg, '-');
if (ip2)
*ip2++ = '\0';
if (strlen(ip1) && inet_pton(AF_INET6, ip1, &range->min_addr.in6) > 0) {
if (ip2 && strlen(ip2)) {
if (inet_pton(AF_INET6, ip2, &range->max_addr.in6) <= 0)
return EDPVS_INVAL;
} else {
range->max_addr = range->min_addr;
}
*af = AF_INET6;
} else {
if (strlen(ip1) && inet_pton(AF_INET, ip1, &range->min_addr.in) <= 0)
return EDPVS_INVAL;
if (ip2 && strlen(ip2)) {
if (inet_pton(AF_INET, ip2, &range->max_addr.in) <= 0)
return EDPVS_INVAL;
if (ntohl(range->max_addr.in.s_addr) < ntohl(range->min_addr.in.s_addr))
range->max_addr = range->min_addr;
} else {
range->max_addr = range->min_addr;
}
*af = AF_INET;
}
return EDPVS_OK;
}
/* [ {tcp | udp | icmp | icmp6 }: ]port1[-port2] */
static int
port_arg_parse(char *arg, struct inet_addr_range *range)
{
char *proto = arg, *sep, *port1, *port2;
int portval;
if (!strncmp(proto, "tcp", 3))
param.proto = IPPROTO_TCP;
else if (!strncmp(proto, "udp", 3))
param.proto = IPPROTO_UDP;
else if (!strncmp(proto, "icmp", 4))
param.proto = IPPROTO_ICMP;
else if (!strncmp(proto, "icmp6", 5))
param.proto = IPPROTO_ICMPV6;
else
param.proto = 0;
if ((sep = strchr(arg, ':')) != NULL) {
*sep++ = '\0';
arg = sep;
}
port1 = arg;
portval = atoi(port1);
if (portval < 0 || portval > 65535)
return EDPVS_INVAL;
range->max_port = range->min_port = portval;
sep = strchr(arg, '-');
if (sep) {
*sep++ = '\0';
port2 = sep;
portval = atoi(port2);
if (portval < range->min_port || portval > 65535)
return EDPVS_INVAL;
range->max_port = portval;
}
return EDPVS_OK;
}
/* option parse */
static inline int
create_opt_parse(struct dpip_conf *conf)
{
struct ipset_option *opt = ¶m.option;
opt->family = (conf->af == AF_INET6) ? AF_INET6 : AF_INET;
while (conf->argc > 0) {
/* bitmap type MUST specify range */
if (!strcmp(CURRARG(conf), "range")) {
NEXTARG_CHECK(conf, CURRARG(conf));
if (strstr(param.type, "ip")) {
if (addr_arg_parse(CURRARG(conf), ¶m.range, ¶m.cidr) < 0)
return EDPVS_INVAL;
} else if (strstr(param.type, "port"))
if (port_arg_parse(CURRARG(conf), ¶m.range) < 0)
return EDPVS_INVAL;
} else if (!strcmp(CURRARG(conf), "comment")) {
opt->create.comment = true;
} else if (!strcmp(CURRARG(conf), "hashsize")) {
NEXTARG_CHECK(conf, CURRARG(conf));
opt->create.hashsize = atoi(CURRARG(conf));
} else if (!strcmp(CURRARG(conf), "maxelem")) {
NEXTARG_CHECK(conf, CURRARG(conf));
opt->create.maxelem = atoi(CURRARG(conf));
} else {
return EDPVS_NOTSUPP;
}
NEXTARG(conf);
}
return EDPVS_OK;
}
static inline int
add_del_opt_parse(struct dpip_conf *conf)
{
while(conf->argc > 0) {
if (strcmp(CURRARG(conf), "comment") == 0) {
NEXTARG_CHECK(conf, CURRARG(conf));
strncpy(param.comment, CURRARG(conf), IPSET_MAXCOMLEN);
} else if (strcmp(CURRARG(conf), "nomatch") == 0) {
param.option.add.nomatch = true;
}else {
return EDPVS_NOTSUPP;
}
NEXTARG(conf);
}
if (conf->force)
param.flag |= IPSET_F_FORCE;
return EDPVS_OK;
}
static int
net_parse(char *arg)
{
return addr_arg_parse(arg, ¶m.range, ¶m.cidr);
}
static inline int
seg_parse(char *params, int maxsegs, int *segnum, char **segs)
{
int i = 0;
char *start, *sp, *arg;
for (start = params; (arg = strtok_r(start, ",", &sp)); start = NULL) {
segs[i] = arg;
i++;
}
if (i > maxsegs)
return EDPVS_INVAL;
if (segnum)
*segnum = i;
return EDPVS_OK;
}
/* ip, mac */
static int
ipmac_parse(char *arg)
{
int i, segnum;
char *segs[2];
unsigned int mac[6] = { 0 };
if (seg_parse(arg, 2, &segnum, segs) < 0)
return EDPVS_INVAL;
if (net_parse(segs[0]) < 0)
return EDPVS_INVAL;
if (segnum > 1 && sscanf(segs[1], "%02X:%02X:%02X:%02X:%02X:%02X",
&mac[0], &mac[1], &mac[2], &mac[3], &mac[4], &mac[5]) < 0)
return EDPVS_INVAL;
for (i = 0; i < 6; i++)
param.mac[i] = mac[i];
return EDPVS_OK;
}
static int
port_parse(char *arg)
{
if (port_arg_parse(arg, ¶m.range) < 0)
return EDPVS_INVAL;
// bitmap:port supports protocol tcp, udp only
if (param.proto != IPPROTO_TCP &&
param.proto != IPPROTO_UDP) {
fprintf(stderr, "bitmap:port should specified protocol tcp or udp\n");
return EDPVS_INVAL;
}
return EDPVS_OK;
}
static int
netport_parse(char *arg)
{
int segnum;
char *segs[2];
if (seg_parse(arg, 2, &segnum, segs) < 0)
return EDPVS_INVAL;
if (segnum != 2)
return EDPVS_INVAL;
if (addr_arg_parse(segs[0], ¶m.range, ¶m.cidr) < 0)
return EDPVS_INVAL;
if (port_arg_parse(segs[1], ¶m.range) < 0)
return EDPVS_INVAL;
return EDPVS_OK;
}
/* net, port, iface */
static int
netportiface_parse(char *arg)
{
int segnum;
char *segs[3];
if (seg_parse(arg, 3, &segnum, segs) < 0)
return EDPVS_INVAL;
if (segnum != 3)
return EDPVS_INVAL;
if (addr_arg_parse(segs[0], ¶m.range, ¶m.cidr) < 0)
return EDPVS_INVAL;
if (port_arg_parse(segs[1], ¶m.range) < 0)
return EDPVS_INVAL;
strncpy(param.iface, segs[2], IFNAMSIZ);
return EDPVS_OK;
}
static int
ipport_parse(char *arg)
{
int segnum;
char *segs[2];
if (seg_parse(arg, 2, &segnum, segs) < 0)
return EDPVS_INVAL;
if (addr_arg_parse(segs[0], ¶m.range, ¶m.cidr) < 0)
return EDPVS_INVAL;
if (segnum > 1 && port_arg_parse(segs[1], ¶m.range) < 0)
return EDPVS_INVAL;
return EDPVS_OK;
}
static int
ipportip_parse(char *arg)
{
int segnum;
char *segs[3];
if (seg_parse(arg, 3, &segnum, segs) < 0)
return EDPVS_INVAL;
if (segnum != 3)
return EDPVS_INVAL;
if (addr_arg_parse(segs[0], ¶m.range, ¶m.cidr) < 0)
return EDPVS_INVAL;
if (port_arg_parse(segs[1], ¶m.range) < 0)
return EDPVS_INVAL;
if (addr_arg_parse(segs[2], ¶m.range2, ¶m.cidr2) < 0)
return EDPVS_INVAL;
return EDPVS_OK;
}
static int
ipportnet_parse(char *arg)
{
int segnum;
char *segs[3];
if (seg_parse(arg, 3, &segnum, segs) < 0)
return EDPVS_INVAL;
if (segnum != 3)
return EDPVS_INVAL;
if (addr_arg_parse(segs[2], ¶m.range, ¶m.cidr) < 0)
return EDPVS_INVAL;
if (port_arg_parse(segs[1], ¶m.range) < 0)
return EDPVS_INVAL;
if (addr_arg_parse(segs[0], ¶m.range2, ¶m.cidr2) < 0)
return EDPVS_INVAL;
return EDPVS_OK;
}
static int
netportnetport_parse(char *arg)
{
uint8_t proto;
int segnum;
char *segs[4];
if (seg_parse(arg, 4, &segnum, segs) < 0)
return EDPVS_INVAL;
if (segnum != 4)
return EDPVS_INVAL;
if (addr_arg_parse(segs[0], ¶m.range, ¶m.cidr) < 0)
return EDPVS_INVAL;
if (port_arg_parse(segs[1], ¶m.range) < 0)
return EDPVS_INVAL;
proto = param.proto;
if (addr_arg_parse(segs[2], ¶m.range2, ¶m.cidr2) < 0)
return EDPVS_INVAL;
if (port_arg_parse(segs[3], ¶m.range2) < 0)
return EDPVS_INVAL;
if (param.proto != proto) {
fprintf(stderr, "Error: port protocol doesn't match\n");
return EDPVS_INVAL;
}
return EDPVS_OK;
}
static int
get_info_array(struct ipset_info_array **array)
{
size_t size;
int err = dpvs_getsockopt(SOCKOPT_GET_IPSET_LIST, ¶m, sizeof(param),
(void **)array, &size);
if (err != 0)
return EDPVS_INVAL;
if (size < 0) {
fprintf(stderr, "corrupted response.\n");
dpvs_sockopt_msg_free(*array);
return EDPVS_INVAL;
}
return EDPVS_OK;
}
static inline int
get_type_idx_from_type(char *type)
{
int i;
for (i = 0; i < NELEMS(types); i++) {
if (!types[i].name)
break;
if (!strcmp(types[i].name, type))
return i;
}
return EDPVS_NOTSUPP;
}
static int
get_type_idx_remote(void)
{
static int tyidx = -1;
struct ipset_info *info;
struct ipset_info_array *array;
if (tyidx >= 0)
return tyidx;
if (get_info_array(&array) < 0) {
return EDPVS_NOTEXIST;
}
info = &array->infos[0];
tyidx = get_type_idx_from_type(info->type);
dpvs_sockopt_msg_free(array);
return tyidx;
}
static int
get_type_idx(void)
{
if (param.opcode == IPSET_OP_CREATE)
return get_type_idx_from_type(param.type);
return get_type_idx_remote();
}
static int
ipset_parse(struct dpip_obj *obj, struct dpip_conf *conf)
{
int type_idx;
switch (conf->cmd) {
case DPIP_CMD_CREATE:
param.opcode = IPSET_OP_CREATE;
break;
case DPIP_CMD_DESTROY:
param.opcode = IPSET_OP_DESTROY;
break;
case DPIP_CMD_ADD:
param.opcode = IPSET_OP_ADD;
break;
case DPIP_CMD_DEL:
param.opcode = IPSET_OP_DEL;
break;
case DPIP_CMD_FLUSH:
param.opcode = IPSET_OP_FLUSH;
break;
case DPIP_CMD_SHOW:
param.opcode = IPSET_OP_LIST;
break;
case DPIP_CMD_TEST:
param.opcode = IPSET_OP_TEST;
break;
default:
param.opcode = IPSET_OP_MAX;
break;
}
/* list all sets */
if (conf->argc == 0) {
if (conf->cmd == DPIP_CMD_SHOW)
return EDPVS_OK;
return EDPVS_INVAL;
}
/* operate on specific set */
sprintf(param.name, "%s", CURRARG(conf));
NEXTARG(conf);
switch (conf->cmd) {
case DPIP_CMD_FLUSH:
case DPIP_CMD_DESTROY:
case DPIP_CMD_SHOW:
if (conf->argc == 0)
return EDPVS_OK;
return EDPVS_INVAL;
case DPIP_CMD_CREATE:
if (conf->argc < 1)
return EDPVS_INVAL;
sprintf(param.type, "%s", CURRARG(conf));
NEXTARG(conf);
if (create_opt_parse(conf) < 0)
return EDPVS_INVAL;
return EDPVS_OK;
case DPIP_CMD_ADD:
case DPIP_CMD_DEL:
case DPIP_CMD_TEST:
if ((conf->argc < 1))
return EDPVS_INVAL;
type_idx = get_type_idx();
if (type_idx < 0)
return EDPVS_INVAL;
if (conf->verbose) {
query_str = malloc(strlen(CURRARG(conf) + 1));
strcpy(query_str, CURRARG(conf));
}
/* type specific arg parsing */
if (types[type_idx].parse &&
(types[type_idx].parse(CURRARG(conf)) < 0))
return EDPVS_INVAL;
if (conf->cmd == DPIP_CMD_TEST)
return EDPVS_OK;
NEXTARG(conf);
return add_del_opt_parse(conf);
default:
return EDPVS_INVAL;
}
return EDPVS_NOTSUPP;
}
/* =========================== check ============================ */
static int
bitmap_check(void)
{
if (param.option.family == AF_INET6) {
fprintf(stderr, "bitmap doesn't support ipv6\n");
return EDPVS_NOTSUPP;
}
if (param.opcode != IPSET_OP_CREATE)
return EDPVS_OK;
if (strstr(param.type, "ip")) {
if (ntohl(param.range.min_addr.in.s_addr) > ntohl(param.range.max_addr.in.s_addr) ||
param.range.max_addr.in.s_addr == 0) {
fprintf(stderr, "bitmap's IP range MUST be specified\n");
return EDPVS_INVAL;
}
}
if (strstr(param.type, "port")) {
if (param.range.min_port > param.range.max_port ||
param.range.max_port == 0) {
fprintf(stderr, "bitmap's port range MUST be specified\n");
return EDPVS_INVAL;
}
}
return EDPVS_OK;
}
static int
hash_ip_check(void)
{
if (param.opcode != IPSET_OP_ADD && param.opcode != IPSET_OP_DEL)
return EDPVS_OK;
if (param.option.family == AF_INET6) {
if (param.cidr || param.cidr2) {
fprintf(stderr, "ipv6 cidr is not supported by the set type\n");
return EDPVS_INVAL;
}
} else if (param.option.family == AF_INET) {
if ((param.cidr > 0 && param.cidr < 16) ||
(param.cidr2 > 0 && param.cidr2 < 16)) {
fprintf(stderr, "ipv4 cidr shouldn't be less than 16\n");
return EDPVS_INVAL;
}
if (ntohl(param.range.max_addr.in.s_addr) != 0) {
if (ntohl(param.range.max_addr.in.s_addr) <
ntohl(param.range.min_addr.in.s_addr)) {
fprintf(stderr, "invalid ipv4 range\n");
return EDPVS_INVAL;
}
if (ntohl(param.range.max_addr.in.s_addr) -
ntohl(param.range.min_addr.in.s_addr) > 65536) {
fprintf(stderr, "ip range shouldn't be greater than 65536\n");
return EDPVS_INVAL;
}
}
if (ntohl(param.range2.max_addr.in.s_addr) != 0) {
if (ntohl(param.range2.max_addr.in.s_addr) <
ntohl(param.range2.min_addr.in.s_addr)) {
fprintf(stderr, "invalid ipv4 range\n");
return EDPVS_INVAL;
}
if (ntohl(param.range2.max_addr.in.s_addr) -
ntohl(param.range2.min_addr.in.s_addr) > 65536) {
fprintf(stderr, "ip range shouldn't be greater than 65536\n");
return EDPVS_INVAL;
}
}
}
return EDPVS_OK;
}
static int
hash_net_check(void)
{
if (param.opcode != IPSET_OP_ADD && param.opcode != IPSET_OP_DEL)
return EDPVS_OK;
if (param.option.family == AF_INET) {
if (ntohl(param.range.max_addr.in.s_addr) != 0) {
if (ntohl(param.range.max_addr.in.s_addr) <
ntohl(param.range.min_addr.in.s_addr)) {
fprintf(stderr, "invalid ipv4 range\n");
return EDPVS_INVAL;
}
}
if (ntohl(param.range2.max_addr.in.s_addr) != 0) {
if (ntohl(param.range2.max_addr.in.s_addr) <
ntohl(param.range2.min_addr.in.s_addr)) {
fprintf(stderr, "invalid ipv4 range\n");
return EDPVS_INVAL;
}
}
}
return EDPVS_OK;
}
static int
hash_ipnet_check(void)
{
if (param.opcode != IPSET_OP_ADD && param.opcode != IPSET_OP_DEL)
return EDPVS_OK;
if (param.option.family == AF_INET6) {
if (param.cidr2) {
fprintf(stderr, "hash:ip,port doesn't support ipv6 cidr\n");
return EDPVS_INVAL;
}
} else if (param.option.family == AF_INET) {
if (param.cidr > 0 && param.cidr < 16) {
fprintf(stderr, "ipv4 cidr shouldn't be less than 16\n");
return EDPVS_INVAL;
}
if (ntohl(param.range.max_addr.in.s_addr) != 0) {
if (ntohl(param.range.max_addr.in.s_addr) <
ntohl(param.range.min_addr.in.s_addr)) {
fprintf(stderr, "invalid ipv4 range\n");
return EDPVS_INVAL;
}
if (ntohl(param.range.max_addr.in.s_addr) -
ntohl(param.range.min_addr.in.s_addr) > 65536) {
fprintf(stderr, "ipv6 range shouldn't be greater than 65536\n");
return EDPVS_INVAL;
}
}
}
return EDPVS_OK;
}
static int
ipset_check(const struct dpip_obj *obj, dpip_cmd_t cmd)
{
int type_idx;
if (param.opcode == IPSET_OP_TEST) {
if (param.cidr || param.cidr2) {
fprintf(stderr, "Warning: ignore cidr settings for ipset test\n");
param.cidr = param.cidr2 = 0;
}
}
if (param.option.family == AF_INET6) {
if ((!ipv6_addr_any(¶m.range.max_addr.in6) &&
!ipv6_addr_equal(¶m.range.min_addr.in6, ¶m.range.max_addr.in6)) ||
(!ipv6_addr_any(¶m.range2.min_addr.in6) &&
!(ipv6_addr_equal(¶m.range2.min_addr.in6, ¶m.range2.max_addr.in6)))) {
fprintf(stderr, "ipv6 range is not supported\n");
return EDPVS_INVAL;
}
}
type_idx = get_type_idx();
if (type_idx < 0) {
if (param.opcode == IPSET_OP_LIST)
return EDPVS_OK;
return EDPVS_INVAL;
}
/* type specific check */
if (types[type_idx].check)
return types[type_idx].check();
return EDPVS_OK;
}
/* =========================== dump ============================ */
static void
bitmap_dump_header(char *buf, struct ipset_info *info)
{
char range[128];
char addr[INET6_ADDRSTRLEN], addr2[INET6_ADDRSTRLEN];
if (info->bitmap.cidr) {
inet_ntop(AF_INET, &info->bitmap.range.min_addr,
addr, INET_ADDRSTRLEN);
sprintf(range, "%s/%d", addr, info->bitmap.cidr);
} else {
if (!strcmp(info->type, "bitmap:ip")) {
inet_ntop(AF_INET, &info->bitmap.range.min_addr,
addr, INET_ADDRSTRLEN);
inet_ntop(AF_INET, &info->bitmap.range.max_addr,
addr2, INET_ADDRSTRLEN);
sprintf(range, "%s-%s", addr, addr2);
}
if (!strcmp(info->type, "bitmap:port")) {
sprintf(range, "tcp|udp:%d-%d", info->bitmap.range.min_port,
info->bitmap.range.max_port);
}
}
sprintf(buf, "range %s %s", range, info->comment? "comment" : "");
}
static void
hash_dump_header(char *buf, struct ipset_info *info)
{
sprintf(buf, "family %s hashsize %d maxelem %d %s",
info->af == AF_INET? "inet" : "inet6",
info->hash.hashsize, info->hash.maxelem,
info->comment? "comment" : "");
}
static inline int
dump_comment(char *buf, char *comment)
{
int n;
if (strlen(comment)) {
n = sprintf(buf, "comment \"%s\"\n", comment);
} else {
n = sprintf(buf, "\n");
}
return n;
}
static const char*
proto_string(uint8_t proto)
{
switch(proto) {
case IPPROTO_TCP:
return "tcp";
case IPPROTO_UDP:
return "udp";
case IPPROTO_ICMP:
return "icmp";
case IPPROTO_ICMPV6:
return "icmp6";
default:
return "unspec";
}
}
static int
net_dump_member(char *buf, struct ipset_member *member, int af)
{
int n = 0;
char addr[INET6_ADDRSTRLEN];
inet_ntop(af, &member->addr.in6, addr, INET6_ADDRSTRLEN);
if (member->cidr) {
n = sprintf(buf, "%s/%d ", addr, member->cidr);
} else {
n = sprintf(buf, "%s ", addr);
}
if (member->nomatch)
n += sprintf(buf + n, "nomatch ");
n += sprintf(buf + n , " ");
n += dump_comment(buf + n, member->comment);
return n;
}
static int
ipmac_dump_member(char *buf, struct ipset_member *member, int af)
{
int n;
char addr[INET_ADDRSTRLEN];
uint8_t *mac = member->mac;
inet_ntop(AF_INET, &member->addr.in, addr, INET_ADDRSTRLEN);
if (!is_zero_mac_addr(mac)) {
n = sprintf(buf, "%s,%02X:%02X:%02X:%02X:%02X:%02X ", addr,
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
} else {
n = sprintf(buf, "%s", addr);
}
n += dump_comment(buf + n, member->comment);
return n;
}
static int
port_dump_member(char *buf, struct ipset_member *member, int af)
{
int n;
n = sprintf(buf, "%s:%d ", proto_string(member->proto), member->port);
n += dump_comment(buf + n, member->comment);
return n;
}
static int
ipport_dump_member(char *buf, struct ipset_member *member, int af)
{
int n;
char addr[INET6_ADDRSTRLEN];
inet_ntop(af, &member->addr, addr, INET6_ADDRSTRLEN);
n = sprintf(buf, "%s,%s:%d ", addr, proto_string(member->proto), member->port);
n += dump_comment(buf + n, member->comment);
return n;
}
static int
netport_dump_member(char *buf, struct ipset_member *member, int af)
{
int n;
char addr[INET6_ADDRSTRLEN];
inet_ntop(af, &member->addr, addr, INET6_ADDRSTRLEN);
n = sprintf(buf, "%s/%d,%s:%d ", addr, member->cidr,
proto_string(member->proto), member->port);
if (member->nomatch)
n += sprintf(buf + n, "nomatch ");
n += sprintf(buf + n , " ");
n += dump_comment(buf + n, member->comment);
return n;
}
static int
netportiface_dump_member(char *buf, struct ipset_member *member, int af)
{
int n;
char addr[INET6_ADDRSTRLEN];
inet_ntop(af, &member->addr, addr, INET6_ADDRSTRLEN);
n = sprintf(buf, "%s/%d,%s:%d,%s ", addr, member->cidr,
proto_string(member->proto),
member->port, member->iface);
if (member->nomatch)
n += sprintf(buf + n, "nomatch ");
n += sprintf(buf + n , " ");
n += dump_comment(buf + n, member->comment);
return n;
}
static int
ipportip_dump_member(char *buf, struct ipset_member *member, int af)
{
int n;
char addr[INET6_ADDRSTRLEN], addr2[INET6_ADDRSTRLEN];