19#include <netinet/in.h>
22#include <libmnl/libmnl.h>
23#include <linux/netfilter/nfnetlink.h>
24#include <linux/netfilter/nf_tables.h>
26#include <libnftnl/table.h>
29 struct list_head head;
44EXPORT_SYMBOL(nftnl_table_alloc);
50EXPORT_SYMBOL(nftnl_table_free);
53 if (t->flags & (1 << NFTNL_TABLE_NAME))
55 if (t->flags & (1 << NFTNL_TABLE_USERDATA))
61EXPORT_SYMBOL(nftnl_table_is_set);
62bool nftnl_table_is_set(
const struct nftnl_table *t, uint16_t attr)
64 return t->flags & (1 << attr);
67EXPORT_SYMBOL(nftnl_table_unset);
68void nftnl_table_unset(
struct nftnl_table *t, uint16_t attr)
70 if (!(t->flags & (1 << attr)))
74 case NFTNL_TABLE_NAME:
77 case NFTNL_TABLE_FLAGS:
78 case NFTNL_TABLE_HANDLE:
79 case NFTNL_TABLE_FAMILY:
81 case NFTNL_TABLE_OWNER:
84 t->flags &= ~(1 << attr);
87static uint32_t nftnl_table_validate[NFTNL_TABLE_MAX + 1] = {
88 [NFTNL_TABLE_FLAGS] =
sizeof(uint32_t),
89 [NFTNL_TABLE_FAMILY] =
sizeof(uint32_t),
90 [NFTNL_TABLE_HANDLE] =
sizeof(uint64_t),
93EXPORT_SYMBOL(nftnl_table_set_data);
94int nftnl_table_set_data(
struct nftnl_table *t, uint16_t attr,
95 const void *data, uint32_t data_len)
97 nftnl_assert_attr_exists(attr, NFTNL_TABLE_MAX);
98 nftnl_assert_validate(data, nftnl_table_validate, attr, data_len);
101 case NFTNL_TABLE_NAME:
102 if (t->flags & (1 << NFTNL_TABLE_NAME))
105 t->name = strdup(data);
109 case NFTNL_TABLE_HANDLE:
110 memcpy(&t->handle, data,
sizeof(t->handle));
112 case NFTNL_TABLE_FLAGS:
113 memcpy(&t->table_flags, data,
sizeof(t->table_flags));
115 case NFTNL_TABLE_FAMILY:
116 memcpy(&t->family, data,
sizeof(t->family));
118 case NFTNL_TABLE_USE:
119 memcpy(&t->use, data,
sizeof(t->use));
121 case NFTNL_TABLE_USERDATA:
122 if (t->flags & (1 << NFTNL_TABLE_USERDATA))
125 t->user.data = malloc(data_len);
128 memcpy(t->user.data, data, data_len);
129 t->user.len = data_len;
131 case NFTNL_TABLE_OWNER:
132 memcpy(&t->owner, data,
sizeof(t->owner));
135 t->flags |= (1 << attr);
139void nftnl_table_set(
struct nftnl_table *t, uint16_t attr,
const void *data) __visible;
140void nftnl_table_set(
struct nftnl_table *t, uint16_t attr,
const void *data)
142 nftnl_table_set_data(t, attr, data, nftnl_table_validate[attr]);
145EXPORT_SYMBOL(nftnl_table_set_u32);
146void nftnl_table_set_u32(
struct nftnl_table *t, uint16_t attr, uint32_t val)
148 nftnl_table_set_data(t, attr, &val,
sizeof(uint32_t));
151EXPORT_SYMBOL(nftnl_table_set_u64);
152void nftnl_table_set_u64(
struct nftnl_table *t, uint16_t attr, uint64_t val)
154 nftnl_table_set_data(t, attr, &val,
sizeof(uint64_t));
157EXPORT_SYMBOL(nftnl_table_set_u8);
158void nftnl_table_set_u8(
struct nftnl_table *t, uint16_t attr, uint8_t val)
160 nftnl_table_set_data(t, attr, &val,
sizeof(uint8_t));
163EXPORT_SYMBOL(nftnl_table_set_str);
164int nftnl_table_set_str(
struct nftnl_table *t, uint16_t attr,
const char *str)
166 return nftnl_table_set_data(t, attr, str, strlen(str) + 1);
169EXPORT_SYMBOL(nftnl_table_get_data);
170const void *nftnl_table_get_data(
const struct nftnl_table *t, uint16_t attr,
173 if (!(t->flags & (1 << attr)))
177 case NFTNL_TABLE_NAME:
178 *data_len = strlen(t->name) + 1;
180 case NFTNL_TABLE_HANDLE:
181 *data_len =
sizeof(uint64_t);
183 case NFTNL_TABLE_FLAGS:
184 *data_len =
sizeof(uint32_t);
185 return &t->table_flags;
186 case NFTNL_TABLE_FAMILY:
187 *data_len =
sizeof(uint32_t);
189 case NFTNL_TABLE_USE:
190 *data_len =
sizeof(uint32_t);
192 case NFTNL_TABLE_USERDATA:
193 *data_len = t->user.len;
195 case NFTNL_TABLE_OWNER:
196 *data_len =
sizeof(uint32_t);
202EXPORT_SYMBOL(nftnl_table_get);
203const void *nftnl_table_get(
const struct nftnl_table *t, uint16_t attr)
206 return nftnl_table_get_data(t, attr, &data_len);
209EXPORT_SYMBOL(nftnl_table_get_u32);
210uint32_t nftnl_table_get_u32(
const struct nftnl_table *t, uint16_t attr)
212 const void *ret = nftnl_table_get(t, attr);
213 return ret == NULL ? 0 : *((uint32_t *)ret);
216EXPORT_SYMBOL(nftnl_table_get_u64);
217uint64_t nftnl_table_get_u64(
const struct nftnl_table *t, uint16_t attr)
219 const void *ret = nftnl_table_get(t, attr);
220 return ret == NULL ? 0 : *((uint64_t *)ret);
223EXPORT_SYMBOL(nftnl_table_get_u8);
224uint8_t nftnl_table_get_u8(
const struct nftnl_table *t, uint16_t attr)
226 const void *ret = nftnl_table_get(t, attr);
227 return ret == NULL ? 0 : *((uint8_t *)ret);
230EXPORT_SYMBOL(nftnl_table_get_str);
231const char *nftnl_table_get_str(
const struct nftnl_table *t, uint16_t attr)
233 return nftnl_table_get(t, attr);
236EXPORT_SYMBOL(nftnl_table_nlmsg_build_payload);
237void nftnl_table_nlmsg_build_payload(
struct nlmsghdr *nlh,
const struct nftnl_table *t)
239 if (t->flags & (1 << NFTNL_TABLE_NAME))
240 mnl_attr_put_strz(nlh, NFTA_TABLE_NAME, t->name);
241 if (t->flags & (1 << NFTNL_TABLE_HANDLE))
242 mnl_attr_put_u64(nlh, NFTA_TABLE_HANDLE, htobe64(t->handle));
243 if (t->flags & (1 << NFTNL_TABLE_FLAGS))
244 mnl_attr_put_u32(nlh, NFTA_TABLE_FLAGS, htonl(t->table_flags));
245 if (t->flags & (1 << NFTNL_TABLE_USERDATA))
246 mnl_attr_put(nlh, NFTA_TABLE_USERDATA, t->user.len, t->user.data);
249static int nftnl_table_parse_attr_cb(
const struct nlattr *attr,
void *data)
251 const struct nlattr **tb = data;
252 int type = mnl_attr_get_type(attr);
254 if (mnl_attr_type_valid(attr, NFTA_TABLE_MAX) < 0)
258 case NFTA_TABLE_NAME:
259 if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0)
262 case NFTA_TABLE_HANDLE:
263 if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0)
266 case NFTA_TABLE_FLAGS:
268 case NFTA_TABLE_OWNER:
269 if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
272 case NFTA_TABLE_USERDATA:
273 if (mnl_attr_validate(attr, MNL_TYPE_BINARY) < 0)
282EXPORT_SYMBOL(nftnl_table_nlmsg_parse);
283int nftnl_table_nlmsg_parse(
const struct nlmsghdr *nlh,
struct nftnl_table *t)
285 struct nlattr *tb[NFTA_TABLE_MAX+1] = {};
286 struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
289 if (mnl_attr_parse(nlh,
sizeof(*nfg), nftnl_table_parse_attr_cb, tb) < 0)
292 if (tb[NFTA_TABLE_NAME]) {
293 if (t->flags & (1 << NFTNL_TABLE_NAME))
295 t->name = strdup(mnl_attr_get_str(tb[NFTA_TABLE_NAME]));
298 t->flags |= (1 << NFTNL_TABLE_NAME);
300 if (tb[NFTA_TABLE_FLAGS]) {
301 t->table_flags = ntohl(mnl_attr_get_u32(tb[NFTA_TABLE_FLAGS]));
302 t->flags |= (1 << NFTNL_TABLE_FLAGS);
304 if (tb[NFTA_TABLE_USE]) {
305 t->use = ntohl(mnl_attr_get_u32(tb[NFTA_TABLE_USE]));
306 t->flags |= (1 << NFTNL_TABLE_USE);
308 if (tb[NFTA_TABLE_HANDLE]) {
309 t->handle = be64toh(mnl_attr_get_u64(tb[NFTA_TABLE_HANDLE]));
310 t->flags |= (1 << NFTNL_TABLE_HANDLE);
312 if (tb[NFTA_TABLE_USERDATA]) {
313 ret = nftnl_table_set_data(t, NFTNL_TABLE_USERDATA,
314 mnl_attr_get_payload(tb[NFTA_TABLE_USERDATA]),
315 mnl_attr_get_payload_len(tb[NFTA_TABLE_USERDATA]));
319 if (tb[NFTA_TABLE_OWNER]) {
320 t->owner = ntohl(mnl_attr_get_u32(tb[NFTA_TABLE_OWNER]));
321 t->flags |= (1 << NFTNL_TABLE_OWNER);
324 t->family = nfg->nfgen_family;
325 t->flags |= (1 << NFTNL_TABLE_FAMILY);
330static int nftnl_table_do_parse(
struct nftnl_table *t,
enum nftnl_parse_type type,
331 const void *data,
struct nftnl_parse_err *err,
332 enum nftnl_parse_input input)
337 case NFTNL_PARSE_JSON:
338 case NFTNL_PARSE_XML:
348EXPORT_SYMBOL(nftnl_table_parse);
349int nftnl_table_parse(
struct nftnl_table *t,
enum nftnl_parse_type type,
350 const char *data,
struct nftnl_parse_err *err)
352 return nftnl_table_do_parse(t, type, data, err, NFTNL_PARSE_BUFFER);
355EXPORT_SYMBOL(nftnl_table_parse_file);
356int nftnl_table_parse_file(
struct nftnl_table *t,
enum nftnl_parse_type type,
357 FILE *fp,
struct nftnl_parse_err *err)
359 return nftnl_table_do_parse(t, type, fp, err, NFTNL_PARSE_FILE);
362static int nftnl_table_snprintf_default(
char *buf,
size_t size,
365 return snprintf(buf, size,
"table %s %s flags %x use %d handle %llu",
366 t->name, nftnl_family2str(t->family),
367 t->table_flags, t->use, (
unsigned long long)t->handle);
370static int nftnl_table_cmd_snprintf(
char *buf,
size_t remain,
372 uint32_t type, uint32_t flags)
376 if (type != NFTNL_OUTPUT_DEFAULT)
379 ret = nftnl_table_snprintf_default(buf + offset, remain, t);
380 SNPRINTF_BUFFER_SIZE(ret, remain, offset);
384EXPORT_SYMBOL(nftnl_table_snprintf);
385int nftnl_table_snprintf(
char *buf,
size_t size,
const struct nftnl_table *t,
386 uint32_t type, uint32_t flags)
391 return nftnl_table_cmd_snprintf(buf, size, t, nftnl_flag2cmd(flags), type,
395static int nftnl_table_do_snprintf(
char *buf,
size_t size,
const void *t,
396 uint32_t cmd, uint32_t type, uint32_t flags)
398 return nftnl_table_snprintf(buf, size, t, type, flags);
401EXPORT_SYMBOL(nftnl_table_fprintf);
402int nftnl_table_fprintf(FILE *fp,
const struct nftnl_table *t, uint32_t type,
405 return nftnl_fprintf(fp, t, NFTNL_CMD_UNSPEC, type, flags,
406 nftnl_table_do_snprintf);
410 struct list_head list;
413EXPORT_SYMBOL(nftnl_table_list_alloc);
422 INIT_LIST_HEAD(&list->list);
427EXPORT_SYMBOL(nftnl_table_list_free);
432 list_for_each_entry_safe(r, tmp, &list->list, head) {
439EXPORT_SYMBOL(nftnl_table_list_is_empty);
442 return list_empty(&list->list);
445EXPORT_SYMBOL(nftnl_table_list_add);
448 list_add(&r->head, &list->list);
451EXPORT_SYMBOL(nftnl_table_list_add_tail);
454 list_add_tail(&r->head, &list->list);
457EXPORT_SYMBOL(nftnl_table_list_del);
463EXPORT_SYMBOL(nftnl_table_list_foreach);
471 list_for_each_entry_safe(cur, tmp, &table_list->list, head) {
484EXPORT_SYMBOL(nftnl_table_list_iter_create);
495 if (nftnl_table_list_is_empty(l))
498 iter->cur = list_entry(l->list.next,
struct nftnl_table, head);
503EXPORT_SYMBOL(nftnl_table_list_iter_next);
512 iter->cur = list_entry(iter->cur->head.next,
struct nftnl_table, head);
513 if (&iter->cur->head == iter->list->list.next)
519EXPORT_SYMBOL(nftnl_table_list_iter_destroy);