diff options
Diffstat (limited to 'lib/libpfctl')
| -rw-r--r-- | lib/libpfctl/Makefile | 9 | ||||
| -rw-r--r-- | lib/libpfctl/Makefile.depend | 12 | ||||
| -rw-r--r-- | lib/libpfctl/libpfctl.c | 3564 | ||||
| -rw-r--r-- | lib/libpfctl/libpfctl.h | 578 |
4 files changed, 4163 insertions, 0 deletions
diff --git a/lib/libpfctl/Makefile b/lib/libpfctl/Makefile new file mode 100644 index 000000000000..4b16d81181a3 --- /dev/null +++ b/lib/libpfctl/Makefile @@ -0,0 +1,9 @@ +LIB= pfctl +INTERNALLIB= true + +SRCS= libpfctl.c +INCS= libpfctl.h + +CFLAGS+=${PICFLAG} + +.include <bsd.lib.mk> diff --git a/lib/libpfctl/Makefile.depend b/lib/libpfctl/Makefile.depend new file mode 100644 index 000000000000..15a1f9c07f7c --- /dev/null +++ b/lib/libpfctl/Makefile.depend @@ -0,0 +1,12 @@ +# Autogenerated - do NOT edit! + +DIRDEPS = \ + include \ + include/xlocale \ + + +.include <dirdeps.mk> + +.if ${DEP_RELDIR} == ${_DEP_RELDIR} +# local dependencies - needed for -jN in clean tree +.endif diff --git a/lib/libpfctl/libpfctl.c b/lib/libpfctl/libpfctl.c new file mode 100644 index 000000000000..0037f31df04b --- /dev/null +++ b/lib/libpfctl/libpfctl.c @@ -0,0 +1,3564 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2021 Rubicon Communications, LLC (Netgate) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> + +#include <sys/ioctl.h> +#include <sys/nv.h> +#include <sys/queue.h> +#include <sys/types.h> + +#include <net/if.h> +#include <net/pfvar.h> +#include <netinet/in.h> + +#include <netpfil/pf/pf_nl.h> +#include <netlink/netlink.h> +#include <netlink/netlink_generic.h> +#include <netlink/netlink_snl.h> +#include <netlink/netlink_snl_generic.h> +#include <netlink/netlink_snl_route.h> + +#include <assert.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> + +#include "libpfctl.h" + +struct pfctl_handle { + int fd; + struct snl_state ss; +}; + +const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { + "never", + "always", + "adaptive" +}; + +static int _pfctl_clear_states(int , const struct pfctl_kill *, + unsigned int *, uint64_t); + +struct pfctl_handle * +pfctl_open(const char *pf_device) +{ + struct pfctl_handle *h; + + h = calloc(1, sizeof(struct pfctl_handle)); + h->fd = -1; + + h->fd = open(pf_device, O_RDWR); + if (h->fd < 0) + goto error; + + if (!snl_init(&h->ss, NETLINK_GENERIC)) + goto error; + + return (h); +error: + close(h->fd); + snl_free(&h->ss); + free(h); + + return (NULL); +} + +void +pfctl_close(struct pfctl_handle *h) +{ + close(h->fd); + snl_free(&h->ss); + free(h); +} + +int +pfctl_fd(struct pfctl_handle *h) +{ + return (h->fd); +} + +static int +pfctl_do_netlink_cmd(struct pfctl_handle *h, uint cmd) +{ + struct snl_errmsg_data e = {}; + struct snl_writer nw; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, cmd); + + hdr = snl_finalize_msg(&nw); + if (hdr == NULL) + return (ENOMEM); + seq_id = hdr->nlmsg_seq; + + snl_send_message(&h->ss, hdr); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + } + + return (e.error); +} + +static int +pfctl_do_ioctl(int dev, uint cmd, size_t size, nvlist_t **nvl) +{ + struct pfioc_nv nv; + void *data; + size_t nvlen; + int ret; + + data = nvlist_pack(*nvl, &nvlen); + if (nvlen > size) + size = nvlen; + +retry: + nv.data = malloc(size); + if (nv.data == NULL) { + ret = ENOMEM; + goto out; + } + + memcpy(nv.data, data, nvlen); + + nv.len = nvlen; + nv.size = size; + + ret = ioctl(dev, cmd, &nv); + if (ret == -1 && errno == ENOSPC) { + size *= 2; + free(nv.data); + goto retry; + } + + nvlist_destroy(*nvl); + *nvl = NULL; + + if (ret == 0) { + *nvl = nvlist_unpack(nv.data, nv.len, 0); + if (*nvl == NULL) { + ret = EIO; + goto out; + } + } else { + ret = errno; + } + +out: + free(data); + free(nv.data); + + return (ret); +} + +static void +pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, + uint8_t *numbers, size_t *nelems) +{ + const uint64_t *tmp; + size_t elems; + + tmp = nvlist_get_number_array(nvl, name, &elems); + assert(elems <= maxelems); + + for (size_t i = 0; i < elems; i++) + numbers[i] = tmp[i]; + + if (nelems) + *nelems = elems; +} + +static void +pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, + uint16_t *numbers, size_t *nelems) +{ + const uint64_t *tmp; + size_t elems; + + tmp = nvlist_get_number_array(nvl, name, &elems); + assert(elems <= maxelems); + + for (size_t i = 0; i < elems; i++) + numbers[i] = tmp[i]; + + if (nelems) + *nelems = elems; +} + +static void +pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, + uint32_t *numbers, size_t *nelems) +{ + const uint64_t *tmp; + size_t elems; + + tmp = nvlist_get_number_array(nvl, name, &elems); + + for (size_t i = 0; i < elems && i < maxelems; i++) + numbers[i] = tmp[i]; + + if (nelems) + *nelems = elems; +} + +static void +pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, + uint64_t *numbers, size_t *nelems) +{ + const uint64_t *tmp; + size_t elems; + + tmp = nvlist_get_number_array(nvl, name, &elems); + assert(elems <= maxelems); + + for (size_t i = 0; i < elems; i++) + numbers[i] = tmp[i]; + + if (nelems) + *nelems = elems; +} + +int +pfctl_startstop(struct pfctl_handle *h, int start) +{ + return (pfctl_do_netlink_cmd(h, start ? PFNL_CMD_START : PFNL_CMD_STOP)); +} + +static void +_pfctl_get_status_counters(const nvlist_t *nvl, + struct pfctl_status_counters *counters) +{ + const uint64_t *ids, *counts; + const char *const *names; + size_t id_len, counter_len, names_len; + + ids = nvlist_get_number_array(nvl, "ids", &id_len); + counts = nvlist_get_number_array(nvl, "counters", &counter_len); + names = nvlist_get_string_array(nvl, "names", &names_len); + assert(id_len == counter_len); + assert(counter_len == names_len); + + TAILQ_INIT(counters); + + for (size_t i = 0; i < id_len; i++) { + struct pfctl_status_counter *c; + + c = malloc(sizeof(*c)); + if (c == NULL) + continue; + + c->id = ids[i]; + c->counter = counts[i]; + c->name = strdup(names[i]); + + TAILQ_INSERT_TAIL(counters, c, entry); + } +} + +#define _OUT(_field) offsetof(struct pfctl_status_counter, _field) +static const struct snl_attr_parser ap_counter[] = { + { .type = PF_C_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_uint64 }, + { .type = PF_C_NAME, .off = _OUT(name), .cb = snl_attr_get_string }, + { .type = PF_C_ID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_ATTR_PARSER(counter_parser, ap_counter); +#undef _OUT + +static bool +snl_attr_get_counters(struct snl_state *ss, struct nlattr *nla, + const void *arg __unused, void *target) +{ + struct pfctl_status_counter counter = {}; + struct pfctl_status_counter *c; + bool error; + + error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &counter_parser, &counter); + if (! error) + return (error); + + c = malloc(sizeof(*c)); + if (c == NULL) + return (false); + + c->id = counter.id; + c->counter = counter.counter; + c->name = strdup(counter.name); + + TAILQ_INSERT_TAIL((struct pfctl_status_counters *)target, c, entry); + + return (error); +} + +struct snl_uint64_array { + uint64_t *array; + size_t count; + size_t max; +}; +static bool +snl_attr_get_uint64_element(struct snl_state *ss, struct nlattr *nla, + const void *arg, void *target) +{ + bool error; + uint64_t value; + struct snl_uint64_array *t = (struct snl_uint64_array *)target; + + if (t->count >= t->max) + return (false); + + error = snl_attr_get_uint64(ss, nla, arg, &value); + if (! error) + return (error); + + t->array[t->count++] = value; + + return (true); +} + +static const struct snl_attr_parser ap_array[] = { + { .cb = snl_attr_get_uint64_element }, +}; +SNL_DECLARE_ATTR_PARSER(array_parser, ap_array); +static bool +snl_attr_get_uint64_array(struct snl_state *ss, struct nlattr *nla, + const void *arg, void *target) +{ + struct snl_uint64_array a = { + .array = target, + .count = 0, + .max = (size_t)arg, + }; + bool error; + + error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); + if (! error) + return (error); + + return (true); +} + +#define _OUT(_field) offsetof(struct pfctl_status, _field) +static const struct snl_attr_parser ap_getstatus[] = { + { .type = PF_GS_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, + { .type = PF_GS_RUNNING, .off = _OUT(running), .cb = snl_attr_get_bool }, + { .type = PF_GS_SINCE, .off = _OUT(since), .cb = snl_attr_get_uint32 }, + { .type = PF_GS_DEBUG, .off = _OUT(debug), .cb = snl_attr_get_uint32 }, + { .type = PF_GS_HOSTID, .off = _OUT(hostid), .cb = snl_attr_get_uint32 }, + { .type = PF_GS_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, + { .type = PF_GS_SRC_NODES, .off = _OUT(src_nodes), .cb = snl_attr_get_uint32 }, + { .type = PF_GS_REASSEMBLE, .off = _OUT(reass), .cb = snl_attr_get_uint32 }, + { .type = PF_GS_SYNCOOKIES_ACTIVE, .off = _OUT(syncookies_active), .cb = snl_attr_get_uint32 }, + { .type = PF_GS_COUNTERS, .off = _OUT(counters), .cb = snl_attr_get_counters }, + { .type = PF_GS_LCOUNTERS, .off = _OUT(lcounters), .cb = snl_attr_get_counters }, + { .type = PF_GS_FCOUNTERS, .off = _OUT(fcounters), .cb = snl_attr_get_counters }, + { .type = PF_GS_SCOUNTERS, .off = _OUT(scounters), .cb = snl_attr_get_counters }, + { .type = PF_GS_CHKSUM, .off = _OUT(pf_chksum), .arg_u32 = PF_MD5_DIGEST_LENGTH, .cb = snl_attr_get_bytes }, + { .type = PF_GS_BCOUNTERS, .off = _OUT(bcounters), .arg_u32 = 2 * 2, .cb = snl_attr_get_uint64_array }, + { .type = PF_GS_PCOUNTERS, .off = _OUT(pcounters), .arg_u32 = 2 * 2 * 2, .cb = snl_attr_get_uint64_array }, +}; +SNL_DECLARE_PARSER(getstatus_parser, struct genlmsghdr, snl_f_p_empty, ap_getstatus); +#undef _OUT + +struct pfctl_status * +pfctl_get_status_h(struct pfctl_handle *h) +{ + struct pfctl_status *status; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + struct snl_writer nw; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (NULL); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_STATUS); + hdr->nlmsg_flags |= NLM_F_DUMP; + + hdr = snl_finalize_msg(&nw); + if (hdr == NULL) { + return (NULL); + } + + seq_id = hdr->nlmsg_seq; + if (! snl_send_message(&h->ss, hdr)) + return (NULL); + + status = calloc(1, sizeof(*status)); + if (status == NULL) + return (NULL); + TAILQ_INIT(&status->counters); + TAILQ_INIT(&status->lcounters); + TAILQ_INIT(&status->fcounters); + TAILQ_INIT(&status->scounters); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &getstatus_parser, status)) + continue; + } + + return (status); +} + +struct pfctl_status * +pfctl_get_status(int dev) +{ + struct pfctl_status *status; + nvlist_t *nvl; + size_t len; + const void *chksum; + + status = calloc(1, sizeof(*status)); + if (status == NULL) + return (NULL); + + nvl = nvlist_create(0); + + if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { + nvlist_destroy(nvl); + free(status); + return (NULL); + } + + status->running = nvlist_get_bool(nvl, "running"); + status->since = nvlist_get_number(nvl, "since"); + status->debug = nvlist_get_number(nvl, "debug"); + status->hostid = ntohl(nvlist_get_number(nvl, "hostid")); + status->states = nvlist_get_number(nvl, "states"); + status->src_nodes = nvlist_get_number(nvl, "src_nodes"); + status->syncookies_active = nvlist_get_bool(nvl, "syncookies_active"); + status->reass = nvlist_get_number(nvl, "reass"); + + strlcpy(status->ifname, nvlist_get_string(nvl, "ifname"), + IFNAMSIZ); + chksum = nvlist_get_binary(nvl, "chksum", &len); + assert(len == PF_MD5_DIGEST_LENGTH); + memcpy(status->pf_chksum, chksum, len); + + _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "counters"), + &status->counters); + _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "lcounters"), + &status->lcounters); + _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "fcounters"), + &status->fcounters); + _pfctl_get_status_counters(nvlist_get_nvlist(nvl, "scounters"), + &status->scounters); + + pf_nvuint_64_array(nvl, "pcounters", 2 * 2 * 2, + (uint64_t *)status->pcounters, NULL); + pf_nvuint_64_array(nvl, "bcounters", 2 * 2, + (uint64_t *)status->bcounters, NULL); + + nvlist_destroy(nvl); + + return (status); +} +int +pfctl_clear_status(struct pfctl_handle *h) +{ + return (pfctl_do_netlink_cmd(h, PFNL_CMD_CLEAR_STATUS)); +} + +static uint64_t +_pfctl_status_counter(struct pfctl_status_counters *counters, uint64_t id) +{ + struct pfctl_status_counter *c; + + TAILQ_FOREACH(c, counters, entry) { + if (c->id == id) + return (c->counter); + } + + return (0); +} + +uint64_t +pfctl_status_counter(struct pfctl_status *status, int id) +{ + return (_pfctl_status_counter(&status->counters, id)); +} + +uint64_t +pfctl_status_lcounter(struct pfctl_status *status, int id) +{ + return (_pfctl_status_counter(&status->lcounters, id)); +} + +uint64_t +pfctl_status_fcounter(struct pfctl_status *status, int id) +{ + return (_pfctl_status_counter(&status->fcounters, id)); +} + +uint64_t +pfctl_status_scounter(struct pfctl_status *status, int id) +{ + return (_pfctl_status_counter(&status->scounters, id)); +} + +void +pfctl_free_status(struct pfctl_status *status) +{ + struct pfctl_status_counter *c, *tmp; + + if (status == NULL) + return; + + TAILQ_FOREACH_SAFE(c, &status->counters, entry, tmp) { + free(c->name); + free(c); + } + TAILQ_FOREACH_SAFE(c, &status->lcounters, entry, tmp) { + free(c->name); + free(c); + } + TAILQ_FOREACH_SAFE(c, &status->fcounters, entry, tmp) { + free(c->name); + free(c); + } + TAILQ_FOREACH_SAFE(c, &status->scounters, entry, tmp) { + free(c->name); + free(c); + } + + free(status); +} + +static void +pfctl_nv_add_addr(nvlist_t *nvparent, const char *name, + const struct pf_addr *addr) +{ + nvlist_t *nvl = nvlist_create(0); + + nvlist_add_binary(nvl, "addr", addr, sizeof(*addr)); + + nvlist_add_nvlist(nvparent, name, nvl); + nvlist_destroy(nvl); +} + +static void +pf_nvaddr_to_addr(const nvlist_t *nvl, struct pf_addr *addr) +{ + size_t len; + const void *data; + + data = nvlist_get_binary(nvl, "addr", &len); + assert(len == sizeof(struct pf_addr)); + memcpy(addr, data, len); +} + +static void +pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, + const struct pf_addr_wrap *addr) +{ + nvlist_t *nvl = nvlist_create(0); + + nvlist_add_number(nvl, "type", addr->type); + nvlist_add_number(nvl, "iflags", addr->iflags); + if (addr->type == PF_ADDR_DYNIFTL) + nvlist_add_string(nvl, "ifname", addr->v.ifname); + if (addr->type == PF_ADDR_TABLE) + nvlist_add_string(nvl, "tblname", addr->v.tblname); + pfctl_nv_add_addr(nvl, "addr", &addr->v.a.addr); + pfctl_nv_add_addr(nvl, "mask", &addr->v.a.mask); + + nvlist_add_nvlist(nvparent, name, nvl); + nvlist_destroy(nvl); +} + +static void +pf_nvaddr_wrap_to_addr_wrap(const nvlist_t *nvl, struct pf_addr_wrap *addr) +{ + bzero(addr, sizeof(*addr)); + + addr->type = nvlist_get_number(nvl, "type"); + addr->iflags = nvlist_get_number(nvl, "iflags"); + if (addr->type == PF_ADDR_DYNIFTL) { + strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), + IFNAMSIZ); + addr->p.dyncnt = nvlist_get_number(nvl, "dyncnt"); + } + if (addr->type == PF_ADDR_TABLE) { + strlcpy(addr->v.tblname, nvlist_get_string(nvl, "tblname"), + PF_TABLE_NAME_SIZE); + addr->p.tblcnt = nvlist_get_number(nvl, "tblcnt"); + } + + pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &addr->v.a.addr); + pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "mask"), &addr->v.a.mask); +} + +static void +pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, + const struct pf_rule_addr *addr) +{ + uint64_t ports[2]; + nvlist_t *nvl = nvlist_create(0); + + pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); + ports[0] = addr->port[0]; + ports[1] = addr->port[1]; + nvlist_add_number_array(nvl, "port", ports, 2); + nvlist_add_number(nvl, "neg", addr->neg); + nvlist_add_number(nvl, "port_op", addr->port_op); + + nvlist_add_nvlist(nvparent, name, nvl); + nvlist_destroy(nvl); +} + +static void +pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) +{ + pf_nvaddr_wrap_to_addr_wrap(nvlist_get_nvlist(nvl, "addr"), &addr->addr); + + pf_nvuint_16_array(nvl, "port", 2, addr->port, NULL); + addr->neg = nvlist_get_number(nvl, "neg"); + addr->port_op = nvlist_get_number(nvl, "port_op"); +} + +static void +pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) +{ + mape->offset = nvlist_get_number(nvl, "offset"); + mape->psidlen = nvlist_get_number(nvl, "psidlen"); + mape->psid = nvlist_get_number(nvl, "psid"); +} + +static void +pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) +{ + size_t len; + const void *data; + + data = nvlist_get_binary(nvl, "key", &len); + assert(len == sizeof(pool->key)); + memcpy(&pool->key, data, len); + + pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "counter"), &pool->counter); + + pool->tblidx = nvlist_get_number(nvl, "tblidx"); + pf_nvuint_16_array(nvl, "proxy_port", 2, pool->proxy_port, NULL); + pool->opts = nvlist_get_number(nvl, "opts"); + + if (nvlist_exists_nvlist(nvl, "mape")) + pf_nvmape_to_mape(nvlist_get_nvlist(nvl, "mape"), &pool->mape); +} + +static void +pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) +{ + pf_nvuint_32_array(nvl, "uid", 2, uid->uid, NULL); + uid->op = nvlist_get_number(nvl, "op"); +} + +static void +pf_nvdivert_to_divert(const nvlist_t *nvl, struct pfctl_rule *rule) +{ + pf_nvaddr_to_addr(nvlist_get_nvlist(nvl, "addr"), &rule->divert.addr); + rule->divert.port = nvlist_get_number(nvl, "port"); +} + +static void +pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) +{ + const uint64_t *skip; + const char *const *labels; + size_t skipcount, labelcount; + + rule->nr = nvlist_get_number(nvl, "nr"); + + pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "src"), &rule->src); + pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "dst"), &rule->dst); + + skip = nvlist_get_number_array(nvl, "skip", &skipcount); + assert(skip); + assert(skipcount == PF_SKIP_COUNT); + for (int i = 0; i < PF_SKIP_COUNT; i++) + rule->skip[i].nr = skip[i]; + + labels = nvlist_get_string_array(nvl, "labels", &labelcount); + assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); + for (size_t i = 0; i < labelcount; i++) + strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); + rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); + strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); + strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); + strlcpy(rule->pqname, nvlist_get_string(nvl, "pqname"), PF_QNAME_SIZE); + strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), + PF_TAG_NAME_SIZE); + strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), + PF_TAG_NAME_SIZE); + + strlcpy(rule->overload_tblname, nvlist_get_string(nvl, "overload_tblname"), + PF_TABLE_NAME_SIZE); + + pf_nvpool_to_pool(nvlist_get_nvlist(nvl, "rpool"), &rule->rdr); + + rule->evaluations = nvlist_get_number(nvl, "evaluations"); + pf_nvuint_64_array(nvl, "packets", 2, rule->packets, NULL); + pf_nvuint_64_array(nvl, "bytes", 2, rule->bytes, NULL); + + if (nvlist_exists_number(nvl, "timestamp")) { + rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); + } + + rule->os_fingerprint = nvlist_get_number(nvl, "os_fingerprint"); + + rule->rtableid = nvlist_get_number(nvl, "rtableid"); + pf_nvuint_32_array(nvl, "timeout", PFTM_MAX, rule->timeout, NULL); + rule->max_states = nvlist_get_number(nvl, "max_states"); + rule->max_src_nodes = nvlist_get_number(nvl, "max_src_nodes"); + rule->max_src_states = nvlist_get_number(nvl, "max_src_states"); + rule->max_src_conn = nvlist_get_number(nvl, "max_src_conn"); + rule->max_src_conn_rate.limit = + nvlist_get_number(nvl, "max_src_conn_rate.limit"); + rule->max_src_conn_rate.seconds = + nvlist_get_number(nvl, "max_src_conn_rate.seconds"); + rule->qid = nvlist_get_number(nvl, "qid"); + rule->pqid = nvlist_get_number(nvl, "pqid"); + rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); + rule->dnrpipe = nvlist_get_number(nvl, "dnrpipe"); + rule->free_flags = nvlist_get_number(nvl, "dnflags"); + rule->prob = nvlist_get_number(nvl, "prob"); + rule->cuid = nvlist_get_number(nvl, "cuid"); + rule->cpid = nvlist_get_number(nvl, "cpid"); + + rule->return_icmp = nvlist_get_number(nvl, "return_icmp"); + rule->return_icmp6 = nvlist_get_number(nvl, "return_icmp6"); + rule->max_mss = nvlist_get_number(nvl, "max_mss"); + rule->scrub_flags = nvlist_get_number(nvl, "scrub_flags"); + + pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "uid"), &rule->uid); + pf_nvrule_uid_to_rule_uid(nvlist_get_nvlist(nvl, "gid"), + (struct pf_rule_uid *)&rule->gid); + + rule->rule_flag = nvlist_get_number(nvl, "rule_flag"); + rule->action = nvlist_get_number(nvl, "action"); + rule->direction = nvlist_get_number(nvl, "direction"); + rule->log = nvlist_get_number(nvl, "log"); + rule->logif = nvlist_get_number(nvl, "logif"); + rule->quick = nvlist_get_number(nvl, "quick"); + rule->ifnot = nvlist_get_number(nvl, "ifnot"); + rule->match_tag_not = nvlist_get_number(nvl, "match_tag_not"); + rule->natpass = nvlist_get_number(nvl, "natpass"); + + rule->keep_state = nvlist_get_number(nvl, "keep_state"); + rule->af = nvlist_get_number(nvl, "af"); + rule->proto = nvlist_get_number(nvl, "proto"); + rule->type = nvlist_get_number(nvl, "type"); + rule->code = nvlist_get_number(nvl, "code"); + rule->flags = nvlist_get_number(nvl, "flags"); + rule->flagset = nvlist_get_number(nvl, "flagset"); + rule->min_ttl = nvlist_get_number(nvl, "min_ttl"); + rule->allow_opts = nvlist_get_number(nvl, "allow_opts"); + rule->rt = nvlist_get_number(nvl, "rt"); + rule->return_ttl = nvlist_get_number(nvl, "return_ttl"); + rule->tos = nvlist_get_number(nvl, "tos"); + rule->set_tos = nvlist_get_number(nvl, "set_tos"); + rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); + rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); + + rule->flush = nvlist_get_number(nvl, "flush"); + rule->prio = nvlist_get_number(nvl, "prio"); + pf_nvuint_8_array(nvl, "set_prio", 2, rule->set_prio, NULL); + + pf_nvdivert_to_divert(nvlist_get_nvlist(nvl, "divert"), rule); + + rule->states_cur = nvlist_get_number(nvl, "states_cur"); + rule->states_tot = nvlist_get_number(nvl, "states_tot"); + rule->src_nodes = nvlist_get_number(nvl, "src_nodes"); +} + +static void +pfctl_nveth_addr_to_eth_addr(const nvlist_t *nvl, struct pfctl_eth_addr *addr) +{ + static const u_int8_t EMPTY_MAC[ETHER_ADDR_LEN] = { 0 }; + size_t len; + const void *data; + + data = nvlist_get_binary(nvl, "addr", &len); + assert(len == sizeof(addr->addr)); + memcpy(addr->addr, data, sizeof(addr->addr)); + + data = nvlist_get_binary(nvl, "mask", &len); + assert(len == sizeof(addr->mask)); + memcpy(addr->mask, data, sizeof(addr->mask)); + + addr->neg = nvlist_get_bool(nvl, "neg"); + + /* To make checks for 'is this address set?' easier. */ + addr->isset = memcmp(addr->addr, EMPTY_MAC, ETHER_ADDR_LEN) != 0; +} + +static nvlist_t * +pfctl_eth_addr_to_nveth_addr(const struct pfctl_eth_addr *addr) +{ + nvlist_t *nvl; + + nvl = nvlist_create(0); + if (nvl == NULL) + return (NULL); + + nvlist_add_bool(nvl, "neg", addr->neg); + nvlist_add_binary(nvl, "addr", &addr->addr, ETHER_ADDR_LEN); + nvlist_add_binary(nvl, "mask", &addr->mask, ETHER_ADDR_LEN); + + return (nvl); +} + +static void +pfctl_nveth_rule_to_eth_rule(const nvlist_t *nvl, struct pfctl_eth_rule *rule) +{ + const char *const *labels; + size_t labelcount, i; + + rule->nr = nvlist_get_number(nvl, "nr"); + rule->quick = nvlist_get_bool(nvl, "quick"); + strlcpy(rule->ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); + rule->ifnot = nvlist_get_bool(nvl, "ifnot"); + rule->direction = nvlist_get_number(nvl, "direction"); + rule->proto = nvlist_get_number(nvl, "proto"); + strlcpy(rule->match_tagname, nvlist_get_string(nvl, "match_tagname"), + PF_TAG_NAME_SIZE); + rule->match_tag = nvlist_get_number(nvl, "match_tag"); + rule->match_tag_not = nvlist_get_bool(nvl, "match_tag_not"); + + labels = nvlist_get_string_array(nvl, "labels", &labelcount); + assert(labelcount <= PF_RULE_MAX_LABEL_COUNT); + for (i = 0; i < labelcount; i++) + strlcpy(rule->label[i], labels[i], PF_RULE_LABEL_SIZE); + rule->ridentifier = nvlist_get_number(nvl, "ridentifier"); + + pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "src"), + &rule->src); + pfctl_nveth_addr_to_eth_addr(nvlist_get_nvlist(nvl, "dst"), + &rule->dst); + + pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipsrc"), + &rule->ipsrc); + pf_nvrule_addr_to_rule_addr(nvlist_get_nvlist(nvl, "ipdst"), + &rule->ipdst); + + rule->evaluations = nvlist_get_number(nvl, "evaluations"); + rule->packets[0] = nvlist_get_number(nvl, "packets-in"); + rule->packets[1] = nvlist_get_number(nvl, "packets-out"); + rule->bytes[0] = nvlist_get_number(nvl, "bytes-in"); + rule->bytes[1] = nvlist_get_number(nvl, "bytes-out"); + + if (nvlist_exists_number(nvl, "timestamp")) { + rule->last_active_timestamp = nvlist_get_number(nvl, "timestamp"); + } + + strlcpy(rule->qname, nvlist_get_string(nvl, "qname"), PF_QNAME_SIZE); + strlcpy(rule->tagname, nvlist_get_string(nvl, "tagname"), + PF_TAG_NAME_SIZE); + + rule->dnpipe = nvlist_get_number(nvl, "dnpipe"); + rule->dnflags = nvlist_get_number(nvl, "dnflags"); + + rule->anchor_relative = nvlist_get_number(nvl, "anchor_relative"); + rule->anchor_wildcard = nvlist_get_number(nvl, "anchor_wildcard"); + + strlcpy(rule->bridge_to, nvlist_get_string(nvl, "bridge_to"), + IFNAMSIZ); + + rule->action = nvlist_get_number(nvl, "action"); +} + +int +pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, + const char *path) +{ + nvlist_t *nvl; + int ret; + + bzero(ri, sizeof(*ri)); + + nvl = nvlist_create(0); + nvlist_add_string(nvl, "path", path); + + if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESETS, 256, &nvl)) != 0) + goto out; + + ri->nr = nvlist_get_number(nvl, "nr"); + +out: + nvlist_destroy(nvl); + return (ret); +} + +int +pfctl_get_eth_ruleset(int dev, const char *path, int nr, + struct pfctl_eth_ruleset_info *ri) +{ + nvlist_t *nvl; + int ret; + + bzero(ri, sizeof(*ri)); + + nvl = nvlist_create(0); + nvlist_add_string(nvl, "path", path); + nvlist_add_number(nvl, "nr", nr); + + if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULESET, 1024, &nvl)) != 0) + goto out; + + ri->nr = nvlist_get_number(nvl, "nr"); + strlcpy(ri->path, nvlist_get_string(nvl, "path"), MAXPATHLEN); + strlcpy(ri->name, nvlist_get_string(nvl, "name"), + PF_ANCHOR_NAME_SIZE); + +out: + nvlist_destroy(nvl); + return (ret); +} + +int +pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, + const char *path) +{ + nvlist_t *nvl; + int ret; + + bzero(rules, sizeof(*rules)); + + nvl = nvlist_create(0); + nvlist_add_string(nvl, "anchor", path); + + if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULES, 1024, &nvl)) != 0) + goto out; + + rules->nr = nvlist_get_number(nvl, "nr"); + rules->ticket = nvlist_get_number(nvl, "ticket"); + +out: + nvlist_destroy(nvl); + return (ret); +} + +int +pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, + const char *path, struct pfctl_eth_rule *rule, bool clear, + char *anchor_call) +{ + nvlist_t *nvl; + int ret; + + nvl = nvlist_create(0); + + nvlist_add_string(nvl, "anchor", path); + nvlist_add_number(nvl, "ticket", ticket); + nvlist_add_number(nvl, "nr", nr); + nvlist_add_bool(nvl, "clear", clear); + + if ((ret = pfctl_do_ioctl(dev, DIOCGETETHRULE, 4096, &nvl)) != 0) + goto out; + + pfctl_nveth_rule_to_eth_rule(nvl, rule); + + if (anchor_call) + strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), + MAXPATHLEN); + +out: + nvlist_destroy(nvl); + return (ret); +} + +int +pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, const char *anchor, + const char *anchor_call, uint32_t ticket) +{ + struct pfioc_nv nv; + nvlist_t *nvl, *addr; + void *packed; + int error = 0; + size_t labelcount, size; + + nvl = nvlist_create(0); + + nvlist_add_number(nvl, "ticket", ticket); + nvlist_add_string(nvl, "anchor", anchor); + nvlist_add_string(nvl, "anchor_call", anchor_call); + + nvlist_add_number(nvl, "nr", r->nr); + nvlist_add_bool(nvl, "quick", r->quick); + nvlist_add_string(nvl, "ifname", r->ifname); + nvlist_add_bool(nvl, "ifnot", r->ifnot); + nvlist_add_number(nvl, "direction", r->direction); + nvlist_add_number(nvl, "proto", r->proto); + nvlist_add_string(nvl, "match_tagname", r->match_tagname); + nvlist_add_bool(nvl, "match_tag_not", r->match_tag_not); + + addr = pfctl_eth_addr_to_nveth_addr(&r->src); + if (addr == NULL) { + nvlist_destroy(nvl); + return (ENOMEM); + } + nvlist_add_nvlist(nvl, "src", addr); + nvlist_destroy(addr); + + addr = pfctl_eth_addr_to_nveth_addr(&r->dst); + if (addr == NULL) { + nvlist_destroy(nvl); + return (ENOMEM); + } + nvlist_add_nvlist(nvl, "dst", addr); + nvlist_destroy(addr); + + pfctl_nv_add_rule_addr(nvl, "ipsrc", &r->ipsrc); + pfctl_nv_add_rule_addr(nvl, "ipdst", &r->ipdst); + + labelcount = 0; + while (labelcount < PF_RULE_MAX_LABEL_COUNT && + r->label[labelcount][0] != 0) { + nvlist_append_string_array(nvl, "labels", + r->label[labelcount]); + labelcount++; + } + nvlist_add_number(nvl, "ridentifier", r->ridentifier); + + nvlist_add_string(nvl, "qname", r->qname); + nvlist_add_string(nvl, "tagname", r->tagname); + nvlist_add_number(nvl, "dnpipe", r->dnpipe); + nvlist_add_number(nvl, "dnflags", r->dnflags); + + nvlist_add_string(nvl, "bridge_to", r->bridge_to); + + nvlist_add_number(nvl, "action", r->action); + + packed = nvlist_pack(nvl, &size); + if (packed == NULL) { + nvlist_destroy(nvl); + return (ENOMEM); + } + + nv.len = size; + nv.size = size; + nv.data = packed; + + if (ioctl(dev, DIOCADDETHRULE, &nv) != 0) + error = errno; + + free(packed); + nvlist_destroy(nvl); + + return (error); +} + +static void +snl_add_msg_attr_addr_wrap(struct snl_writer *nw, uint32_t type, const struct pf_addr_wrap *addr) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_ip6(nw, PF_AT_ADDR, &addr->v.a.addr.v6); + snl_add_msg_attr_ip6(nw, PF_AT_MASK, &addr->v.a.mask.v6); + + if (addr->type == PF_ADDR_DYNIFTL) + snl_add_msg_attr_string(nw, PF_AT_IFNAME, addr->v.ifname); + if (addr->type == PF_ADDR_TABLE) + snl_add_msg_attr_string(nw, PF_AT_TABLENAME, addr->v.tblname); + snl_add_msg_attr_u8(nw, PF_AT_TYPE, addr->type); + snl_add_msg_attr_u8(nw, PF_AT_IFLAGS, addr->iflags); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_pool_addr(struct snl_writer *nw, uint32_t type, const struct pf_pooladdr *pa) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_string(nw, PF_PA_IFNAME, pa->ifname); + snl_add_msg_attr_addr_wrap(nw, PF_PA_ADDR, &pa->addr); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_rule_addr(struct snl_writer *nw, uint32_t type, const struct pf_rule_addr *addr) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_addr_wrap(nw, PF_RAT_ADDR, &addr->addr); + snl_add_msg_attr_u16(nw, PF_RAT_SRC_PORT, addr->port[0]); + snl_add_msg_attr_u16(nw, PF_RAT_DST_PORT, addr->port[1]); + snl_add_msg_attr_u8(nw, PF_RAT_NEG, addr->neg); + snl_add_msg_attr_u8(nw, PF_RAT_OP, addr->port_op); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_rule_labels(struct snl_writer *nw, uint32_t type, const char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]) +{ + int off, i = 0; + + off = snl_add_msg_attr_nested(nw, type); + + while (i < PF_RULE_MAX_LABEL_COUNT && + labels[i][0] != 0) { + snl_add_msg_attr_string(nw, PF_LT_LABEL, labels[i]); + i++; + } + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_mape(struct snl_writer *nw, uint32_t type, const struct pf_mape_portset *me) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_u8(nw, PF_MET_OFFSET, me->offset); + snl_add_msg_attr_u8(nw, PF_MET_PSID_LEN, me->psidlen); + snl_add_msg_attr_u16(nw, PF_MET_PSID, me->psid); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_rpool(struct snl_writer *nw, uint32_t type, const struct pfctl_pool *pool) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr(nw, PF_PT_KEY, sizeof(pool->key), &pool->key); + snl_add_msg_attr_ip6(nw, PF_PT_COUNTER, &pool->counter.v6); + snl_add_msg_attr_u32(nw, PF_PT_TBLIDX, pool->tblidx); + snl_add_msg_attr_u16(nw, PF_PT_PROXY_SRC_PORT, pool->proxy_port[0]); + snl_add_msg_attr_u16(nw, PF_PT_PROXY_DST_PORT, pool->proxy_port[1]); + snl_add_msg_attr_u8(nw, PF_PT_OPTS, pool->opts); + snl_add_msg_attr_mape(nw, PF_PT_MAPE, &pool->mape); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_timeouts(struct snl_writer *nw, uint32_t type, const uint32_t *timeouts) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + for (int i = 0; i < PFTM_MAX; i++) + snl_add_msg_attr_u32(nw, PF_TT_TIMEOUT, timeouts[i]); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_uid(struct snl_writer *nw, uint32_t type, const struct pf_rule_uid *uid) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_u32(nw, PF_RUT_UID_LOW, uid->uid[0]); + snl_add_msg_attr_u32(nw, PF_RUT_UID_HIGH, uid->uid[1]); + snl_add_msg_attr_u8(nw, PF_RUT_OP, uid->op); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_threshold(struct snl_writer *nw, uint32_t type, const struct pfctl_threshold *th) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_u32(nw, PF_TH_LIMIT, th->limit); + snl_add_msg_attr_u32(nw, PF_TH_SECONDS, th->seconds); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_pf_rule(struct snl_writer *nw, uint32_t type, const struct pfctl_rule *r) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_rule_addr(nw, PF_RT_SRC, &r->src); + snl_add_msg_attr_rule_addr(nw, PF_RT_DST, &r->dst); + snl_add_msg_attr_rule_labels(nw, PF_RT_LABELS, r->label); + snl_add_msg_attr_u32(nw, PF_RT_RIDENTIFIER, r->ridentifier); + snl_add_msg_attr_string(nw, PF_RT_IFNAME, r->ifname); + snl_add_msg_attr_string(nw, PF_RT_QNAME, r->qname); + snl_add_msg_attr_string(nw, PF_RT_PQNAME, r->pqname); + snl_add_msg_attr_string(nw, PF_RT_TAGNAME, r->tagname); + snl_add_msg_attr_string(nw, PF_RT_MATCH_TAGNAME, r->match_tagname); + snl_add_msg_attr_string(nw, PF_RT_OVERLOAD_TBLNAME, r->overload_tblname); + snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RDR, &r->rdr); + snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_NAT, &r->nat); + snl_add_msg_attr_rpool(nw, PF_RT_RPOOL_RT, &r->route); + snl_add_msg_attr_threshold(nw, PF_RT_PKTRATE, &r->pktrate); + snl_add_msg_attr_u32(nw, PF_RT_OS_FINGERPRINT, r->os_fingerprint); + snl_add_msg_attr_u32(nw, PF_RT_RTABLEID, r->rtableid); + snl_add_msg_attr_timeouts(nw, PF_RT_TIMEOUT, r->timeout); + snl_add_msg_attr_u32(nw, PF_RT_MAX_STATES, r->max_states); + snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_NODES, r->max_src_nodes); + snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_STATES, r->max_src_states); + snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN, r->max_src_conn); + snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_LIMIT, r->max_src_conn_rate.limit); + snl_add_msg_attr_u32(nw, PF_RT_MAX_SRC_CONN_RATE_SECS, r->max_src_conn_rate.seconds); + snl_add_msg_attr_u16(nw, PF_RT_MAX_PKT_SIZE, r->max_pkt_size); + + snl_add_msg_attr_u16(nw, PF_RT_DNPIPE, r->dnpipe); + snl_add_msg_attr_u16(nw, PF_RT_DNRPIPE, r->dnrpipe); + snl_add_msg_attr_u32(nw, PF_RT_DNFLAGS, r->free_flags); + + snl_add_msg_attr_u32(nw, PF_RT_NR, r->nr); + snl_add_msg_attr_u32(nw, PF_RT_PROB, r->prob); + snl_add_msg_attr_u32(nw, PF_RT_CUID, r->cuid); + snl_add_msg_attr_u32(nw, PF_RT_CPID, r->cpid); + + snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP, r->return_icmp); + snl_add_msg_attr_u16(nw, PF_RT_RETURN_ICMP6, r->return_icmp6); + snl_add_msg_attr_u16(nw, PF_RT_MAX_MSS, r->max_mss); + snl_add_msg_attr_u16(nw, PF_RT_SCRUB_FLAGS, r->scrub_flags); + + snl_add_msg_attr_uid(nw, PF_RT_UID, &r->uid); + snl_add_msg_attr_uid(nw, PF_RT_GID, (const struct pf_rule_uid *)&r->gid); + snl_add_msg_attr_string(nw, PF_RT_RCV_IFNAME, r->rcv_ifname); + snl_add_msg_attr_bool(nw, PF_RT_RCV_IFNOT, r->rcvifnot); + + snl_add_msg_attr_u32(nw, PF_RT_RULE_FLAG, r->rule_flag); + snl_add_msg_attr_u8(nw, PF_RT_ACTION, r->action); + snl_add_msg_attr_u8(nw, PF_RT_DIRECTION, r->direction); + snl_add_msg_attr_u8(nw, PF_RT_LOG, r->log); + snl_add_msg_attr_u8(nw, PF_RT_LOGIF, r->logif); + snl_add_msg_attr_u8(nw, PF_RT_QUICK, r->quick); + snl_add_msg_attr_u8(nw, PF_RT_IF_NOT, r->ifnot); + snl_add_msg_attr_u8(nw, PF_RT_MATCH_TAG_NOT, r->match_tag_not); + snl_add_msg_attr_u8(nw, PF_RT_NATPASS, r->natpass); + snl_add_msg_attr_u8(nw, PF_RT_KEEP_STATE, r->keep_state); + snl_add_msg_attr_u8(nw, PF_RT_AF, r->af); + snl_add_msg_attr_u8(nw, PF_RT_PROTO, r->proto); + snl_add_msg_attr_u8(nw, PF_RT_TYPE, r->type); + snl_add_msg_attr_u8(nw, PF_RT_CODE, r->code); + snl_add_msg_attr_u8(nw, PF_RT_FLAGS, r->flags); + snl_add_msg_attr_u8(nw, PF_RT_FLAGSET, r->flagset); + snl_add_msg_attr_u8(nw, PF_RT_MIN_TTL, r->min_ttl); + snl_add_msg_attr_u8(nw, PF_RT_ALLOW_OPTS, r->allow_opts); + snl_add_msg_attr_u8(nw, PF_RT_RT, r->rt); + snl_add_msg_attr_u8(nw, PF_RT_RETURN_TTL, r->return_ttl); + snl_add_msg_attr_u8(nw, PF_RT_TOS, r->tos); + snl_add_msg_attr_u8(nw, PF_RT_SET_TOS, r->set_tos); + + snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_RELATIVE, r->anchor_relative); + snl_add_msg_attr_u8(nw, PF_RT_ANCHOR_WILDCARD, r->anchor_wildcard); + snl_add_msg_attr_u8(nw, PF_RT_FLUSH, r->flush); + snl_add_msg_attr_u8(nw, PF_RT_PRIO, r->prio); + snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO, r->set_prio[0]); + snl_add_msg_attr_u8(nw, PF_RT_SET_PRIO_REPLY, r->set_prio[1]); + snl_add_msg_attr_u8(nw, PF_RT_NAF, r->naf); + + snl_add_msg_attr_ip6(nw, PF_RT_DIVERT_ADDRESS, &r->divert.addr.v6); + snl_add_msg_attr_u16(nw, PF_RT_DIVERT_PORT, r->divert.port); + + snl_end_attr_nested(nw, off); +} + +int +pfctl_add_rule(int dev __unused, const struct pfctl_rule *r, const char *anchor, + const char *anchor_call, uint32_t ticket, uint32_t pool_ticket) +{ + struct pfctl_handle *h; + int ret; + + h = pfctl_open(PF_DEVICE); + if (h == NULL) + return (ENODEV); + + ret = pfctl_add_rule_h(h, r, anchor, anchor_call, ticket, pool_ticket); + + pfctl_close(h); + + return (ret); +} + +int +pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, + const char *anchor, const char *anchor_call, uint32_t ticket, + uint32_t pool_ticket) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADDRULE); + hdr->nlmsg_flags |= NLM_F_DUMP; + snl_add_msg_attr_u32(&nw, PF_ART_TICKET, ticket); + snl_add_msg_attr_u32(&nw, PF_ART_POOL_TICKET, pool_ticket); + snl_add_msg_attr_string(&nw, PF_ART_ANCHOR, anchor); + snl_add_msg_attr_string(&nw, PF_ART_ANCHOR_CALL, anchor_call); + + snl_add_msg_attr_pf_rule(&nw, PF_ART_RULE, r); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + } + + return (e.error); +} + +#define _IN(_field) offsetof(struct genlmsghdr, _field) +#define _OUT(_field) offsetof(struct pfctl_rules_info, _field) +static struct snl_attr_parser ap_getrules[] = { + { .type = PF_GR_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, + { .type = PF_GR_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, +}; +#undef _IN +#undef _OUT +SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, snl_f_p_empty, ap_getrules); + +int +pfctl_get_rules_info_h(struct pfctl_handle *h, struct pfctl_rules_info *rules, uint32_t ruleset, + const char *path) +{ + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + struct snl_writer nw; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULES); + hdr->nlmsg_flags |= NLM_F_DUMP; + + snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, path); + snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); + + hdr = snl_finalize_msg(&nw); + if (hdr == NULL) + return (ENOMEM); + + seq_id = hdr->nlmsg_seq; + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &getrules_parser, rules)) + continue; + } + + return (e.error); +} + +int +pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, + const char *path) +{ + struct pfctl_handle *h; + int error; + + h = pfctl_open(PF_DEVICE); + if (h == NULL) + return (ENOTSUP); + error = pfctl_get_rules_info_h(h, rules, ruleset, path); + pfctl_close(h); + + return (error); +} + +int +pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, const char *anchor, + uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) +{ + return (pfctl_get_clear_rule_h(h, nr, ticket, anchor, ruleset, rule, + anchor_call, false)); +} + +int +pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, const char *anchor, + uint32_t ruleset, struct pfctl_rule *rule, char *anchor_call) +{ + return (pfctl_get_clear_rule(dev, nr, ticket, anchor, ruleset, rule, + anchor_call, false)); +} + +#define _OUT(_field) offsetof(struct pf_addr_wrap, _field) +static const struct snl_attr_parser ap_addr_wrap[] = { + { .type = PF_AT_ADDR, .off = _OUT(v.a.addr), .cb = snl_attr_get_in6_addr }, + { .type = PF_AT_MASK, .off = _OUT(v.a.mask), .cb = snl_attr_get_in6_addr }, + { .type = PF_AT_IFNAME, .off = _OUT(v.ifname), .arg = (void *)IFNAMSIZ,.cb = snl_attr_copy_string }, + { .type = PF_AT_TABLENAME, .off = _OUT(v.tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, + { .type = PF_AT_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, + { .type = PF_AT_IFLAGS, .off = _OUT(iflags), .cb = snl_attr_get_uint8 }, + { .type = PF_AT_TBLCNT, .off = _OUT(p.tblcnt), .cb = snl_attr_get_uint32 }, + { .type = PF_AT_DYNCNT, .off = _OUT(p.dyncnt), .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_ATTR_PARSER(addr_wrap_parser, ap_addr_wrap); +#undef _OUT + +#define _OUT(_field) offsetof(struct pf_rule_addr, _field) +static struct snl_attr_parser ap_rule_addr[] = { + { .type = PF_RAT_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, + { .type = PF_RAT_SRC_PORT, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, + { .type = PF_RAT_DST_PORT, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, + { .type = PF_RAT_NEG, .off = _OUT(neg), .cb = snl_attr_get_uint8 }, + { .type = PF_RAT_OP, .off = _OUT(port_op), .cb = snl_attr_get_uint8 }, +}; +#undef _OUT +SNL_DECLARE_ATTR_PARSER(rule_addr_parser, ap_rule_addr); + +struct snl_parsed_labels +{ + char labels[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; + uint32_t i; +}; + +static bool +snl_attr_get_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, + const void *arg __unused, void *target) +{ + struct snl_parsed_labels *l = (struct snl_parsed_labels *)target; + bool ret; + + if (l->i >= PF_RULE_MAX_LABEL_COUNT) + return (E2BIG); + + ret = snl_attr_copy_string(ss, nla, (void *)PF_RULE_LABEL_SIZE, + l->labels[l->i]); + if (ret) + l->i++; + + return (ret); +} + +#define _OUT(_field) offsetof(struct nl_parsed_labels, _field) +static const struct snl_attr_parser ap_labels[] = { + { .type = PF_LT_LABEL, .off = 0, .cb = snl_attr_get_pf_rule_labels }, +}; +SNL_DECLARE_ATTR_PARSER(rule_labels_parser, ap_labels); +#undef _OUT + +static bool +snl_attr_get_nested_pf_rule_labels(struct snl_state *ss, struct nlattr *nla, + const void *arg __unused, void *target) +{ + struct snl_parsed_labels parsed_labels = { }; + bool error; + + /* Assumes target points to the beginning of the structure */ + error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &rule_labels_parser, &parsed_labels); + if (! error) + return (error); + + memcpy(target, parsed_labels.labels, sizeof(parsed_labels.labels)); + + return (true); +} + +#define _OUT(_field) offsetof(struct pf_mape_portset, _field) +static const struct snl_attr_parser ap_mape_portset[] = { + { .type = PF_MET_OFFSET, .off = _OUT(offset), .cb = snl_attr_get_uint8 }, + { .type = PF_MET_PSID_LEN, .off = _OUT(psidlen), .cb = snl_attr_get_uint8 }, + {. type = PF_MET_PSID, .off = _OUT(psid), .cb = snl_attr_get_uint16 }, +}; +SNL_DECLARE_ATTR_PARSER(mape_portset_parser, ap_mape_portset); +#undef _OUT + +#define _OUT(_field) offsetof(struct pfctl_pool, _field) +static const struct snl_attr_parser ap_pool[] = { + { .type = PF_PT_KEY, .off = _OUT(key), .arg = (void *)sizeof(struct pf_poolhashkey), .cb = snl_attr_get_bytes }, + { .type = PF_PT_COUNTER, .off = _OUT(counter), .cb = snl_attr_get_in6_addr }, + { .type = PF_PT_TBLIDX, .off = _OUT(tblidx), .cb = snl_attr_get_uint32 }, + { .type = PF_PT_PROXY_SRC_PORT, .off = _OUT(proxy_port[0]), .cb = snl_attr_get_uint16 }, + { .type = PF_PT_PROXY_DST_PORT, .off = _OUT(proxy_port[1]), .cb = snl_attr_get_uint16 }, + { .type = PF_PT_OPTS, .off = _OUT(opts), .cb = snl_attr_get_uint8 }, + { .type = PF_PT_MAPE, .off = _OUT(mape), .arg = &mape_portset_parser, .cb = snl_attr_get_nested }, +}; +SNL_DECLARE_ATTR_PARSER(pool_parser, ap_pool); +#undef _OUT + +struct nl_parsed_timeouts +{ + uint32_t timeouts[PFTM_MAX]; + uint32_t i; +}; + +static bool +snl_attr_get_pf_timeout(struct snl_state *ss, struct nlattr *nla, + const void *arg __unused, void *target) +{ + struct nl_parsed_timeouts *t = (struct nl_parsed_timeouts *)target; + bool ret; + + if (t->i >= PFTM_MAX) + return (E2BIG); + + ret = snl_attr_get_uint32(ss, nla, NULL, &t->timeouts[t->i]); + if (ret) + t->i++; + + return (ret); +} + +#define _OUT(_field) offsetof(struct nl_parsed_timeout, _field) +static const struct snl_attr_parser ap_timeouts[] = { + { .type = PF_TT_TIMEOUT, .off = 0, .cb = snl_attr_get_pf_timeout }, +}; +SNL_DECLARE_ATTR_PARSER(timeout_parser, ap_timeouts); +#undef _OUT + +static bool +snl_attr_get_nested_timeouts(struct snl_state *ss, struct nlattr *nla, + const void *arg __unused, void *target) +{ + struct nl_parsed_timeouts parsed_timeouts = { }; + bool error; + + /* Assumes target points to the beginning of the structure */ + error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &timeout_parser, &parsed_timeouts); + if (! error) + return (error); + + memcpy(target, parsed_timeouts.timeouts, sizeof(parsed_timeouts.timeouts)); + + return (true); +} + +#define _OUT(_field) offsetof(struct pf_rule_uid, _field) +static const struct snl_attr_parser ap_rule_uid[] = { + { .type = PF_RUT_UID_LOW, .off = _OUT(uid[0]), .cb = snl_attr_get_uint32 }, + { .type = PF_RUT_UID_HIGH, .off = _OUT(uid[1]), .cb = snl_attr_get_uint32 }, + { .type = PF_RUT_OP, .off = _OUT(op), .cb = snl_attr_get_uint8 }, +}; +SNL_DECLARE_ATTR_PARSER(rule_uid_parser, ap_rule_uid); +#undef _OUT + +#define _OUT(_field) offsetof(struct pfctl_threshold, _field) +static const struct snl_attr_parser ap_pfctl_threshold[] = { + { .type = PF_TH_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, + { .type = PF_TH_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, + { .type = PF_TH_COUNT, .off = _OUT(count), .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_ATTR_PARSER(pfctl_threshold_parser, ap_pfctl_threshold); +#undef _OUT + +struct pfctl_nl_get_rule { + struct pfctl_rule r; + char anchor_call[MAXPATHLEN]; +}; +#define _OUT(_field) offsetof(struct pfctl_nl_get_rule, _field) +static struct snl_attr_parser ap_getrule[] = { + { .type = PF_RT_SRC, .off = _OUT(r.src), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, + { .type = PF_RT_DST, .off = _OUT(r.dst), .arg = &rule_addr_parser,.cb = snl_attr_get_nested }, + { .type = PF_RT_RIDENTIFIER, .off = _OUT(r.ridentifier), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_LABELS, .off = _OUT(r.label), .arg = &rule_labels_parser,.cb = snl_attr_get_nested_pf_rule_labels }, + { .type = PF_RT_IFNAME, .off = _OUT(r.ifname), .arg = (void *)IFNAMSIZ, .cb = snl_attr_copy_string }, + { .type = PF_RT_QNAME, .off = _OUT(r.qname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, + { .type = PF_RT_PQNAME, .off = _OUT(r.pqname), .arg = (void *)PF_QNAME_SIZE, .cb = snl_attr_copy_string }, + { .type = PF_RT_TAGNAME, .off = _OUT(r.tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, + { .type = PF_RT_MATCH_TAGNAME, .off = _OUT(r.match_tagname), .arg = (void *)PF_TAG_NAME_SIZE, .cb = snl_attr_copy_string }, + { .type = PF_RT_OVERLOAD_TBLNAME, .off = _OUT(r.overload_tblname), .arg = (void *)PF_TABLE_NAME_SIZE, .cb = snl_attr_copy_string }, + { .type = PF_RT_RPOOL_RDR, .off = _OUT(r.rdr), .arg = &pool_parser, .cb = snl_attr_get_nested }, + { .type = PF_RT_OS_FINGERPRINT, .off = _OUT(r.os_fingerprint), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_RTABLEID, .off = _OUT(r.rtableid), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_TIMEOUT, .off = _OUT(r.timeout), .arg = &timeout_parser, .cb = snl_attr_get_nested_timeouts }, + { .type = PF_RT_MAX_STATES, .off = _OUT(r.max_states), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_MAX_SRC_NODES, .off = _OUT(r.max_src_nodes), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_MAX_SRC_STATES, .off = _OUT(r.max_src_states), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_MAX_SRC_CONN_RATE_LIMIT, .off = _OUT(r.max_src_conn_rate.limit), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_MAX_SRC_CONN_RATE_SECS, .off = _OUT(r.max_src_conn_rate.seconds), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_DNPIPE, .off = _OUT(r.dnpipe), .cb = snl_attr_get_uint16 }, + { .type = PF_RT_DNRPIPE, .off = _OUT(r.dnrpipe), .cb = snl_attr_get_uint16 }, + { .type = PF_RT_DNFLAGS, .off = _OUT(r.free_flags), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_NR, .off = _OUT(r.nr), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_PROB, .off = _OUT(r.prob), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_CUID, .off = _OUT(r.cuid), .cb = snl_attr_get_uint32 }, + {. type = PF_RT_CPID, .off = _OUT(r.cpid), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_RETURN_ICMP, .off = _OUT(r.return_icmp), .cb = snl_attr_get_uint16 }, + { .type = PF_RT_RETURN_ICMP6, .off = _OUT(r.return_icmp6), .cb = snl_attr_get_uint16 }, + { .type = PF_RT_MAX_MSS, .off = _OUT(r.max_mss), .cb = snl_attr_get_uint16 }, + { .type = PF_RT_SCRUB_FLAGS, .off = _OUT(r.scrub_flags), .cb = snl_attr_get_uint16 }, + { .type = PF_RT_UID, .off = _OUT(r.uid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, + { .type = PF_RT_GID, .off = _OUT(r.gid), .arg = &rule_uid_parser, .cb = snl_attr_get_nested }, + { .type = PF_RT_RULE_FLAG, .off = _OUT(r.rule_flag), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_ACTION, .off = _OUT(r.action), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_DIRECTION, .off = _OUT(r.direction), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_LOG, .off = _OUT(r.log), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_LOGIF, .off = _OUT(r.logif), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_QUICK, .off = _OUT(r.quick), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_IF_NOT, .off = _OUT(r.ifnot), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_MATCH_TAG_NOT, .off = _OUT(r.match_tag_not), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_NATPASS, .off = _OUT(r.natpass), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_KEEP_STATE, .off = _OUT(r.keep_state), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_AF, .off = _OUT(r.af), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_PROTO, .off = _OUT(r.proto), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_TYPE, .off = _OUT(r.type), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_CODE, .off = _OUT(r.code), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_FLAGS, .off = _OUT(r.flags), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_FLAGSET, .off = _OUT(r.flagset), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_MIN_TTL, .off = _OUT(r.min_ttl), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_ALLOW_OPTS, .off = _OUT(r.allow_opts), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_RT, .off = _OUT(r.rt), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_RETURN_TTL, .off = _OUT(r.return_ttl), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_TOS, .off = _OUT(r.tos), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_SET_TOS, .off = _OUT(r.set_tos), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_ANCHOR_RELATIVE, .off = _OUT(r.anchor_relative), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_ANCHOR_WILDCARD, .off = _OUT(r.anchor_wildcard), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_FLUSH, .off = _OUT(r.flush), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_PRIO, .off = _OUT(r.prio), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_SET_PRIO, .off = _OUT(r.set_prio[0]), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_SET_PRIO_REPLY, .off = _OUT(r.set_prio[1]), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_DIVERT_ADDRESS, .off = _OUT(r.divert.addr), .cb = snl_attr_get_in6_addr }, + { .type = PF_RT_DIVERT_PORT, .off = _OUT(r.divert.port), .cb = snl_attr_get_uint16 }, + { .type = PF_RT_PACKETS_IN, .off = _OUT(r.packets[0]), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_PACKETS_OUT, .off = _OUT(r.packets[1]), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_BYTES_IN, .off = _OUT(r.bytes[0]), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_BYTES_OUT, .off = _OUT(r.bytes[1]), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_EVALUATIONS, .off = _OUT(r.evaluations), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_TIMESTAMP, .off = _OUT(r.last_active_timestamp), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_STATES_CUR, .off = _OUT(r.states_cur), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_STATES_TOTAL, .off = _OUT(r.states_tot), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_SRC_NODES, .off = _OUT(r.src_nodes), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_ANCHOR_CALL, .off = _OUT(anchor_call), .arg = (void*)MAXPATHLEN, .cb = snl_attr_copy_string }, + { .type = PF_RT_RCV_IFNAME, .off = _OUT(r.rcv_ifname), .arg = (void*)IFNAMSIZ, .cb = snl_attr_copy_string }, + { .type = PF_RT_MAX_SRC_CONN, .off = _OUT(r.max_src_conn), .cb = snl_attr_get_uint32 }, + { .type = PF_RT_RPOOL_NAT, .off = _OUT(r.nat), .arg = &pool_parser, .cb = snl_attr_get_nested }, + { .type = PF_RT_NAF, .off = _OUT(r.naf), .cb = snl_attr_get_uint8 }, + { .type = PF_RT_RPOOL_RT, .off = _OUT(r.route), .arg = &pool_parser, .cb = snl_attr_get_nested }, + { .type = PF_RT_RCV_IFNOT, .off = _OUT(r.rcvifnot),.cb = snl_attr_get_bool }, + { .type = PF_RT_SRC_NODES_LIMIT, .off = _OUT(r.src_nodes_type[PF_SN_LIMIT]), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_SRC_NODES_NAT, .off = _OUT(r.src_nodes_type[PF_SN_NAT]), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_SRC_NODES_ROUTE, .off = _OUT(r.src_nodes_type[PF_SN_ROUTE]), .cb = snl_attr_get_uint64 }, + { .type = PF_RT_PKTRATE, .off = _OUT(r.pktrate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, + { .type = PF_RT_MAX_PKT_SIZE, .off =_OUT(r.max_pkt_size), .cb = snl_attr_get_uint16 }, +}; +#undef _OUT +SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, snl_f_p_empty, ap_getrule); + +int +pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, + const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, + char *anchor_call, bool clear) +{ + struct pfctl_nl_get_rule attrs = {}; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + struct snl_writer nw; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETRULE); + hdr->nlmsg_flags |= NLM_F_DUMP; + + snl_add_msg_attr_string(&nw, PF_GR_ANCHOR, anchor); + snl_add_msg_attr_u8(&nw, PF_GR_ACTION, ruleset); + snl_add_msg_attr_u32(&nw, PF_GR_NR, nr); + snl_add_msg_attr_u32(&nw, PF_GR_TICKET, ticket); + snl_add_msg_attr_u8(&nw, PF_GR_CLEAR, clear); + + hdr = snl_finalize_msg(&nw); + if (hdr == NULL) + return (ENOMEM); + + seq_id = hdr->nlmsg_seq; + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &getrule_parser, &attrs)) + continue; + } + + memcpy(rule, &attrs.r, sizeof(attrs.r)); + strlcpy(anchor_call, attrs.anchor_call, MAXPATHLEN); + + return (e.error); +} + +int +pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, + const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, + char *anchor_call, bool clear) +{ + nvlist_t *nvl; + int ret; + + nvl = nvlist_create(0); + if (nvl == 0) + return (ENOMEM); + + nvlist_add_number(nvl, "nr", nr); + nvlist_add_number(nvl, "ticket", ticket); + nvlist_add_string(nvl, "anchor", anchor); + nvlist_add_number(nvl, "ruleset", ruleset); + + if (clear) + nvlist_add_bool(nvl, "clear_counter", true); + + if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) + goto out; + + pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); + + if (anchor_call) + strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), + MAXPATHLEN); + +out: + nvlist_destroy(nvl); + return (ret); +} + +int +pfctl_set_keepcounters(int dev, bool keep) +{ + struct pfioc_nv nv; + nvlist_t *nvl; + int ret; + + nvl = nvlist_create(0); + + nvlist_add_bool(nvl, "keep_counters", keep); + + nv.data = nvlist_pack(nvl, &nv.len); + nv.size = nv.len; + + nvlist_destroy(nvl); + + ret = ioctl(dev, DIOCKEEPCOUNTERS, &nv); + + free(nv.data); + return (ret); +} + +struct pfctl_creator { + uint32_t id; +}; +#define _IN(_field) offsetof(struct genlmsghdr, _field) +#define _OUT(_field) offsetof(struct pfctl_creator, _field) +static struct snl_attr_parser ap_creators[] = { + { .type = PF_ST_CREATORID, .off = _OUT(id), .cb = snl_attr_get_uint32 }, +}; +#undef _IN +#undef _OUT +SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, snl_f_p_empty, ap_creators); + +static int +pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) +{ + + int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); + size_t i = 0; + + struct nlmsghdr *hdr; + struct snl_writer nw; + + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETCREATORS); + hdr->nlmsg_flags |= NLM_F_DUMP; + hdr = snl_finalize_msg(&nw); + if (hdr == NULL) + return (ENOMEM); + uint32_t seq_id = hdr->nlmsg_seq; + + snl_send_message(ss, hdr); + + struct snl_errmsg_data e = {}; + while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { + struct pfctl_creator c; + bzero(&c, sizeof(c)); + + if (!snl_parse_nlmsg(ss, hdr, &creator_parser, &c)) + continue; + + creators[i] = c.id; + i++; + if (i > *len) + return (E2BIG); + } + + *len = i; + + return (0); +} + +int +pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) +{ + int error; + + error = pfctl_get_creators_nl(&h->ss, creators, len); + + return (error); +} + +static inline bool +snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, + const void *arg __unused, void *target) +{ + memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); + return (true); +} + +static inline bool +snl_attr_store_ifname(struct snl_state *ss __unused, struct nlattr *nla, + const void *arg __unused, void *target) +{ + size_t maxlen = NLA_DATA_LEN(nla); + + if (strnlen((char *)NLA_DATA(nla), maxlen) < maxlen) { + strlcpy(target, (char *)NLA_DATA(nla), maxlen); + return (true); + } + return (false); +} + +#define _OUT(_field) offsetof(struct pfctl_state_peer, _field) +static const struct snl_attr_parser nla_p_speer[] = { + { .type = PF_STP_SEQLO, .off = _OUT(seqlo), .cb = snl_attr_get_uint32 }, + { .type = PF_STP_SEQHI, .off = _OUT(seqhi), .cb = snl_attr_get_uint32 }, + { .type = PF_STP_SEQDIFF, .off = _OUT(seqdiff), .cb = snl_attr_get_uint32 }, + { .type = PF_STP_STATE, .off = _OUT(state), .cb = snl_attr_get_uint8 }, + { .type = PF_STP_WSCALE, .off = _OUT(wscale), .cb = snl_attr_get_uint8 }, +}; +SNL_DECLARE_ATTR_PARSER(speer_parser, nla_p_speer); +#undef _OUT + +#define _OUT(_field) offsetof(struct pfctl_state_key, _field) +static const struct snl_attr_parser nla_p_skey[] = { + { .type = PF_STK_ADDR0, .off = _OUT(addr[0]), .cb = snl_attr_get_pfaddr }, + { .type = PF_STK_ADDR1, .off = _OUT(addr[1]), .cb = snl_attr_get_pfaddr }, + { .type = PF_STK_PORT0, .off = _OUT(port[0]), .cb = snl_attr_get_uint16 }, + { .type = PF_STK_PORT1, .off = _OUT(port[1]), .cb = snl_attr_get_uint16 }, + { .type = PF_STK_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, + { .type = PF_STK_PROTO, .off = _OUT(proto), .cb = snl_attr_get_uint16 }, +}; +SNL_DECLARE_ATTR_PARSER(skey_parser, nla_p_skey); +#undef _OUT + +#define _IN(_field) offsetof(struct genlmsghdr, _field) +#define _OUT(_field) offsetof(struct pfctl_state, _field) +static struct snl_attr_parser ap_state[] = { + { .type = PF_ST_ID, .off = _OUT(id), .cb = snl_attr_get_uint64 }, + { .type = PF_ST_CREATORID, .off = _OUT(creatorid), .cb = snl_attr_get_uint32 }, + { .type = PF_ST_IFNAME, .off = _OUT(ifname), .cb = snl_attr_store_ifname }, + { .type = PF_ST_ORIG_IFNAME, .off = _OUT(orig_ifname), .cb = snl_attr_store_ifname }, + { .type = PF_ST_KEY_WIRE, .off = _OUT(key[0]), .arg = &skey_parser, .cb = snl_attr_get_nested }, + { .type = PF_ST_KEY_STACK, .off = _OUT(key[1]), .arg = &skey_parser, .cb = snl_attr_get_nested }, + { .type = PF_ST_PEER_SRC, .off = _OUT(src), .arg = &speer_parser, .cb = snl_attr_get_nested }, + { .type = PF_ST_PEER_DST, .off = _OUT(dst), .arg = &speer_parser, .cb = snl_attr_get_nested }, + { .type = PF_ST_RT_ADDR, .off = _OUT(rt_addr), .cb = snl_attr_get_pfaddr }, + { .type = PF_ST_RULE, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, + { .type = PF_ST_ANCHOR, .off = _OUT(anchor), .cb = snl_attr_get_uint32 }, + { .type = PF_ST_NAT_RULE, .off = _OUT(nat_rule), .cb = snl_attr_get_uint32 }, + { .type = PF_ST_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint32 }, + { .type = PF_ST_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint32 }, + { .type = PF_ST_PACKETS0, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, + { .type = PF_ST_PACKETS1, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, + { .type = PF_ST_BYTES0, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, + { .type = PF_ST_BYTES1, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, + { .type = PF_ST_DIRECTION, .off = _OUT(direction), .cb = snl_attr_get_uint8 }, + { .type = PF_ST_LOG, .off = _OUT(log), .cb = snl_attr_get_uint8 }, + { .type = PF_ST_STATE_FLAGS, .off = _OUT(state_flags), .cb = snl_attr_get_uint16 }, + { .type = PF_ST_SYNC_FLAGS, .off = _OUT(sync_flags), .cb = snl_attr_get_uint8 }, + { .type = PF_ST_RTABLEID, .off = _OUT(rtableid), .cb = snl_attr_get_int32 }, + { .type = PF_ST_MIN_TTL, .off = _OUT(min_ttl), .cb = snl_attr_get_uint8 }, + { .type = PF_ST_MAX_MSS, .off = _OUT(max_mss), .cb = snl_attr_get_uint16 }, + { .type = PF_ST_DNPIPE, .off = _OUT(dnpipe), .cb = snl_attr_get_uint16 }, + { .type = PF_ST_DNRPIPE, .off = _OUT(dnrpipe), .cb = snl_attr_get_uint16 }, + { .type = PF_ST_RT, .off = _OUT(rt), .cb = snl_attr_get_uint8 }, + { .type = PF_ST_RT_IFNAME, .off = _OUT(rt_ifname), .cb = snl_attr_store_ifname }, + { .type = PF_ST_SRC_NODE_FLAGS, .off = _OUT(src_node_flags), .cb = snl_attr_get_uint8 }, + { .type = PF_ST_RT_AF, .off = _OUT(rt_af), .cb = snl_attr_get_uint8 }, +}; +#undef _IN +#undef _OUT +SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, snl_f_p_empty, ap_state); + +static const struct snl_hdr_parser *all_parsers[] = { + &state_parser, &skey_parser, &speer_parser, + &creator_parser, &getrules_parser +}; + +static int +pfctl_get_states_nl(struct pfctl_state_filter *filter, struct snl_state *ss, pfctl_get_state_fn f, void *arg) +{ + SNL_VERIFY_PARSERS(all_parsers); + int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); + int ret; + + struct nlmsghdr *hdr; + struct snl_writer nw; + + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GETSTATES); + hdr->nlmsg_flags |= NLM_F_DUMP; + snl_add_msg_attr_string(&nw, PF_ST_IFNAME, filter->ifname); + snl_add_msg_attr_u16(&nw, PF_ST_PROTO, filter->proto); + snl_add_msg_attr_u8(&nw, PF_ST_AF, filter->af); + snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_ADDR, &filter->addr.v6); + snl_add_msg_attr_ip6(&nw, PF_ST_FILTER_MASK, &filter->mask.v6); + + hdr = snl_finalize_msg(&nw); + if (hdr == NULL) + return (ENOMEM); + + uint32_t seq_id = hdr->nlmsg_seq; + + snl_send_message(ss, hdr); + + struct snl_errmsg_data e = {}; + while ((hdr = snl_read_reply_multi(ss, seq_id, &e)) != NULL) { + struct pfctl_state s; + bzero(&s, sizeof(s)); + if (!snl_parse_nlmsg(ss, hdr, &state_parser, &s)) + continue; + + ret = f(&s, arg); + if (ret != 0) + return (ret); + } + + return (0); +} + +int +pfctl_get_states_iter(pfctl_get_state_fn f, void *arg) +{ + struct pfctl_state_filter filter = {}; + return (pfctl_get_filtered_states_iter(&filter, f, arg)); +} + +int +pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg) +{ + struct snl_state ss = {}; + int error; + + snl_init(&ss, NETLINK_GENERIC); + error = pfctl_get_states_nl(filter, &ss, f, arg); + snl_free(&ss); + + return (error); +} + +static int +pfctl_append_states(struct pfctl_state *s, void *arg) +{ + struct pfctl_state *new; + struct pfctl_states *states = (struct pfctl_states *)arg; + + new = malloc(sizeof(*s)); + if (new == NULL) + return (ENOMEM); + + memcpy(new, s, sizeof(*s)); + + TAILQ_INSERT_TAIL(&states->states, new, entry); + + return (0); +} + +int +pfctl_get_states(int dev __unused, struct pfctl_states *states) +{ + int ret; + + bzero(states, sizeof(*states)); + TAILQ_INIT(&states->states); + + ret = pfctl_get_states_iter(pfctl_append_states, states); + if (ret != 0) { + pfctl_free_states(states); + return (ret); + } + + return (0); +} + +void +pfctl_free_states(struct pfctl_states *states) +{ + struct pfctl_state *s, *tmp; + + TAILQ_FOREACH_SAFE(s, &states->states, entry, tmp) { + free(s); + } + + bzero(states, sizeof(*states)); +} + +struct pfctl_nl_clear_states { + uint32_t killed; +}; +#define _OUT(_field) offsetof(struct pfctl_nl_clear_states, _field) +static struct snl_attr_parser ap_clear_states[] = { + { .type = PF_CS_KILLED, .off = _OUT(killed), .cb = snl_attr_get_uint32 }, +}; +#undef _OUT +SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, snl_f_p_empty, ap_clear_states); + +static int +_pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, + unsigned int *killed, int cmd) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct pfctl_nl_clear_states attrs = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, cmd); + hdr->nlmsg_flags |= NLM_F_DUMP; + + snl_add_msg_attr_u64(&nw, PF_CS_CMP_ID, kill->cmp.id); + snl_add_msg_attr_u32(&nw, PF_CS_CMP_CREATORID, htonl(kill->cmp.creatorid)); + snl_add_msg_attr_u8(&nw, PF_CS_CMP_DIR, kill->cmp.direction); + snl_add_msg_attr_u8(&nw, PF_CS_AF, kill->af); + snl_add_msg_attr_u8(&nw, PF_CS_PROTO, kill->proto); + snl_add_msg_attr_rule_addr(&nw, PF_CS_SRC, &kill->src); + snl_add_msg_attr_rule_addr(&nw, PF_CS_DST, &kill->dst); + snl_add_msg_attr_rule_addr(&nw, PF_CS_RT_ADDR, &kill->rt_addr); + snl_add_msg_attr_string(&nw, PF_CS_IFNAME, kill->ifname); + snl_add_msg_attr_string(&nw, PF_CS_LABEL, kill->label); + snl_add_msg_attr_bool(&nw, PF_CS_KILL_MATCH, kill->kill_match); + snl_add_msg_attr_bool(&nw, PF_CS_NAT, kill->nat); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &clear_states_parser, &attrs)) + continue; + } + + if (killed) + *killed = attrs.killed; + + return (e.error); +} + +int +pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, + unsigned int *killed) +{ + return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_CLRSTATES)); +} + +int +pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, + unsigned int *killed) +{ + return(_pfctl_clear_states_h(h, kill, killed, PFNL_CMD_KILLSTATES)); +} + +static int +_pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, + unsigned int *killed, uint64_t cmd) +{ + struct pfctl_handle *h; + int ret; + + h = pfctl_open(PF_DEVICE); + if (h == NULL) + return (ENODEV); + + ret = _pfctl_clear_states_h(h, kill, killed, cmd); + pfctl_close(h); + + return (ret); +} + +int +pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, + unsigned int *killed) +{ + return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); +} + +int +pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) +{ + return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_KILLSTATES)); +} + +int +pfctl_clear_rules(int dev, const char *anchorname) +{ + struct pfioc_trans trans; + struct pfioc_trans_e transe[2]; + int ret; + + bzero(&trans, sizeof(trans)); + bzero(&transe, sizeof(transe)); + + transe[0].rs_num = PF_RULESET_SCRUB; + if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) + >= sizeof(transe[0].anchor)) + return (E2BIG); + + transe[1].rs_num = PF_RULESET_FILTER; + if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) + >= sizeof(transe[1].anchor)) + return (E2BIG); + + trans.size = 2; + trans.esize = sizeof(transe[0]); + trans.array = transe; + + ret = ioctl(dev, DIOCXBEGIN, &trans); + if (ret != 0) + return (errno); + ret = ioctl(dev, DIOCXCOMMIT, &trans); + if (ret != 0) + return (errno); + + return (0); +} + +int +pfctl_clear_nat(int dev, const char *anchorname) +{ + struct pfioc_trans trans; + struct pfioc_trans_e transe[3]; + int ret; + + bzero(&trans, sizeof(trans)); + bzero(&transe, sizeof(transe)); + + transe[0].rs_num = PF_RULESET_NAT; + if (strlcpy(transe[0].anchor, anchorname, sizeof(transe[0].anchor)) + >= sizeof(transe[0].anchor)) + return (E2BIG); + + transe[1].rs_num = PF_RULESET_BINAT; + if (strlcpy(transe[1].anchor, anchorname, sizeof(transe[1].anchor)) + >= sizeof(transe[0].anchor)) + return (E2BIG); + + transe[2].rs_num = PF_RULESET_RDR; + if (strlcpy(transe[2].anchor, anchorname, sizeof(transe[2].anchor)) + >= sizeof(transe[2].anchor)) + return (E2BIG); + + trans.size = 3; + trans.esize = sizeof(transe[0]); + trans.array = transe; + + ret = ioctl(dev, DIOCXBEGIN, &trans); + if (ret != 0) + return (errno); + ret = ioctl(dev, DIOCXCOMMIT, &trans); + if (ret != 0) + return (errno); + + return (0); +} + +int +pfctl_clear_eth_rules(int dev, const char *anchorname) +{ + struct pfioc_trans trans; + struct pfioc_trans_e transe; + int ret; + + bzero(&trans, sizeof(trans)); + bzero(&transe, sizeof(transe)); + + transe.rs_num = PF_RULESET_ETH; + if (strlcpy(transe.anchor, anchorname, sizeof(transe.anchor)) + >= sizeof(transe.anchor)) + return (E2BIG); + + trans.size = 1; + trans.esize = sizeof(transe); + trans.array = &transe; + + ret = ioctl(dev, DIOCXBEGIN, &trans); + if (ret != 0) + return (errno); + ret = ioctl(dev, DIOCXCOMMIT, &trans); + if (ret != 0) + return (errno); + + return (0); +} + +static int +_pfctl_get_limit(int dev, const int index, uint *limit) +{ + struct pfioc_limit pl; + + bzero(&pl, sizeof(pl)); + pl.index = index; + + if (ioctl(dev, DIOCGETLIMIT, &pl) == -1) + return (errno); + + *limit = pl.limit; + + return (0); +} + +int +pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) +{ + struct pfioc_nv nv; + nvlist_t *nvl; + int ret; + uint state_limit; + uint64_t lim, hi, lo; + + ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); + if (ret != 0) + return (ret); + + if (state_limit == 0) + state_limit = INT_MAX; + + lim = state_limit; + hi = lim * s->highwater / 100; + lo = lim * s->lowwater / 100; + + if (lo == hi) + hi++; + + nvl = nvlist_create(0); + + nvlist_add_bool(nvl, "enabled", s->mode != PFCTL_SYNCOOKIES_NEVER); + nvlist_add_bool(nvl, "adaptive", s->mode == PFCTL_SYNCOOKIES_ADAPTIVE); + nvlist_add_number(nvl, "highwater", hi); + nvlist_add_number(nvl, "lowwater", lo); + + nv.data = nvlist_pack(nvl, &nv.len); + nv.size = nv.len; + nvlist_destroy(nvl); + nvl = NULL; + + ret = ioctl(dev, DIOCSETSYNCOOKIES, &nv); + + free(nv.data); + if (ret != 0) + return (errno); + + return (0); +} + +int +pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) +{ + nvlist_t *nvl; + int ret; + uint state_limit; + bool enabled, adaptive; + + ret = _pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); + if (ret != 0) + return (ret); + + if (state_limit == 0) + state_limit = INT_MAX; + + bzero(s, sizeof(*s)); + + nvl = nvlist_create(0); + + if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { + ret = errno; + goto out; + } + + enabled = nvlist_get_bool(nvl, "enabled"); + adaptive = nvlist_get_bool(nvl, "adaptive"); + + if (enabled) { + if (adaptive) + s->mode = PFCTL_SYNCOOKIES_ADAPTIVE; + else + s->mode = PFCTL_SYNCOOKIES_ALWAYS; + } else { + s->mode = PFCTL_SYNCOOKIES_NEVER; + } + + s->highwater = nvlist_get_number(nvl, "highwater") * 100 / state_limit; + s->lowwater = nvlist_get_number(nvl, "lowwater") * 100 / state_limit; + s->halfopen_states = nvlist_get_number(nvl, "halfopen_states"); + +out: + nvlist_destroy(nvl); + return (ret); +} + +int +pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *nadd, int flags) +{ + struct pfioc_table io; + + if (tbl == NULL || size < 0 || (size && addr == NULL)) { + return (EINVAL); + } + bzero(&io, sizeof io); + io.pfrio_flags = flags; + io.pfrio_table = *tbl; + io.pfrio_buffer = addr; + io.pfrio_esize = sizeof(*addr); + io.pfrio_size = size; + + if (ioctl(dev, DIOCRADDADDRS, &io)) + return (errno); + if (nadd != NULL) + *nadd = io.pfrio_nadd; + return (0); +} + +static void +snl_add_msg_attr_table(struct snl_writer *nw, uint32_t type, + const struct pfr_table *tbl) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_string(nw, PF_T_ANCHOR, tbl->pfrt_anchor); + snl_add_msg_attr_string(nw, PF_T_NAME, tbl->pfrt_name); + snl_add_msg_attr_u32(nw, PF_T_TABLE_FLAGS, tbl->pfrt_flags); + + snl_end_attr_nested(nw, off); +} + +static void +snl_add_msg_attr_pfr_addr(struct snl_writer *nw, uint32_t type, + const struct pfr_addr *addr) +{ + int off; + + off = snl_add_msg_attr_nested(nw, type); + + snl_add_msg_attr_u8(nw, PFR_A_AF, addr->pfra_af); + snl_add_msg_attr_u8(nw, PFR_A_NET, addr->pfra_net); + snl_add_msg_attr_bool(nw, PFR_A_NOT, addr->pfra_not); + snl_add_msg_attr_ip6(nw, PFR_A_ADDR, &addr->pfra_ip6addr); + + snl_end_attr_nested(nw, off); +} + +static struct snl_attr_parser ap_table_add_addr[] = { + { .type = PF_TA_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_PARSER(table_add_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_add_addr); + +static int +_pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr + *addrs, int size, int *nadd, int flags) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + uint32_t added; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_ADD_ADDR); + + snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); + snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); + for (int i = 0; i < size; i++) + snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &table_add_addr_parser, &added)) + continue; + } + + if (nadd) + *nadd = added; + + return (e.error); +} + +int +pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *nadd, int flags) +{ + int ret; + int off = 0; + int partial_added; + int chunk_size; + + do { + chunk_size = MIN(size - off, 256); + ret = _pfctl_table_add_addrs_h(h, tbl, &addr[off], chunk_size, &partial_added, flags); + if (ret != 0) + break; + if (nadd) + *nadd += partial_added; + off += chunk_size; + } while (off < size); + + return (ret); +} + +static struct snl_attr_parser ap_table_del_addr[] = { + { .type = PF_TA_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_PARSER(table_del_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_table_del_addr); +static int +_pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr + *addrs, int size, int *ndel, int flags) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + uint32_t deleted; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_TABLE_DEL_ADDR); + + snl_add_msg_attr_table(&nw, PF_TA_TABLE, tbl); + snl_add_msg_attr_u32(&nw, PF_TA_FLAGS, flags); + for (int i = 0; i < size; i++) + snl_add_msg_attr_pfr_addr(&nw, PF_TA_ADDR, &addrs[i]); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &table_del_addr_parser, &deleted)) + continue; + } + + if (ndel) + *ndel = deleted; + + return (e.error); +} + +int +pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *ndel, int flags) +{ + struct pfioc_table io; + + if (tbl == NULL || size < 0 || (size && addr == NULL)) { + return (EINVAL); + } + bzero(&io, sizeof io); + io.pfrio_flags = flags; + io.pfrio_table = *tbl; + io.pfrio_buffer = addr; + io.pfrio_esize = sizeof(*addr); + io.pfrio_size = size; + + if (ioctl(dev, DIOCRDELADDRS, &io)) + return (errno); + if (ndel != NULL) + *ndel = io.pfrio_ndel; + return (0); +} + +int +pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *ndel, int flags) +{ + int ret; + int off = 0; + int partial_deleted; + int chunk_size; + + do { + chunk_size = MIN(size - off, 256); + ret = _pfctl_table_del_addrs_h(h, tbl, &addr[off], chunk_size, + &partial_deleted, flags); + if (ret != 0) + break; + if (ndel) + *ndel += partial_deleted; + off += chunk_size; + } while (off < size); + + return (ret); +} + +int +pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, int flags) +{ + struct pfioc_table io; + + if (tbl == NULL || size < 0 || (size && addr == NULL)) { + return (EINVAL); + } + bzero(&io, sizeof io); + io.pfrio_flags = flags; + io.pfrio_table = *tbl; + io.pfrio_buffer = addr; + io.pfrio_esize = sizeof(*addr); + io.pfrio_size = size; + io.pfrio_size2 = (size2 != NULL) ? *size2 : 0; + if (ioctl(dev, DIOCRSETADDRS, &io)) + return (errno); + if (nadd != NULL) + *nadd = io.pfrio_nadd; + if (ndel != NULL) + *ndel = io.pfrio_ndel; + if (nchange != NULL) + *nchange = io.pfrio_nchange; + if (size2 != NULL) + *size2 = io.pfrio_size2; + return (0); +} + +int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr *addr, + int *size, int flags) +{ + struct pfioc_table io; + + if (tbl == NULL || size == NULL || *size < 0 || + (*size && addr == NULL)) { + return (EINVAL); + } + bzero(&io, sizeof io); + io.pfrio_flags = flags; + io.pfrio_table = *tbl; + io.pfrio_buffer = addr; + io.pfrio_esize = sizeof(*addr); + io.pfrio_size = *size; + if (ioctl(dev, DIOCRGETADDRS, &io)) + return (errno); + *size = io.pfrio_size; + return (0); +} + +int +pfctl_set_statusif(struct pfctl_handle *h, const char *ifname) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_STATUSIF); + + snl_add_msg_attr_string(&nw, PF_SS_IFNAME, ifname); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + } + + return (e.error); +} + +#define _IN(_field) offsetof(struct genlmsghdr, _field) +#define _OUT(_field) offsetof(struct pfctl_natlook, _field) +static struct snl_attr_parser ap_natlook[] = { + { .type = PF_NL_SRC_ADDR, .off = _OUT(saddr), .cb = snl_attr_get_in6_addr }, + { .type = PF_NL_DST_ADDR, .off = _OUT(daddr), .cb = snl_attr_get_in6_addr }, + { .type = PF_NL_SRC_PORT, .off = _OUT(sport), .cb = snl_attr_get_uint16 }, + { .type = PF_NL_DST_PORT, .off = _OUT(dport), .cb = snl_attr_get_uint16 }, +}; +#undef _IN +#undef _OUT +SNL_DECLARE_PARSER(natlook_parser, struct genlmsghdr, snl_f_p_empty, ap_natlook); + +int +pfctl_natlook(struct pfctl_handle *h, const struct pfctl_natlook_key *k, + struct pfctl_natlook *r) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_NATLOOK); + hdr->nlmsg_flags |= NLM_F_DUMP; + + snl_add_msg_attr_u8(&nw, PF_NL_AF, k->af); + snl_add_msg_attr_u8(&nw, PF_NL_DIRECTION, k->direction); + snl_add_msg_attr_u8(&nw, PF_NL_PROTO, k->proto); + snl_add_msg_attr_ip6(&nw, PF_NL_SRC_ADDR, &k->saddr.v6); + snl_add_msg_attr_ip6(&nw, PF_NL_DST_ADDR, &k->daddr.v6); + snl_add_msg_attr_u16(&nw, PF_NL_SRC_PORT, k->sport); + snl_add_msg_attr_u16(&nw, PF_NL_DST_PORT, k->dport); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &natlook_parser, r)) + continue; + } + + return (e.error); +} + +int +pfctl_set_debug(struct pfctl_handle *h, uint32_t level) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_DEBUG); + + snl_add_msg_attr_u32(&nw, PF_SD_LEVEL, level); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + } + + return (e.error); +} + +int +pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_TIMEOUT); + + snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); + snl_add_msg_attr_u32(&nw, PF_TO_SECONDS, seconds); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + } + + return (e.error); +} + +struct pfctl_nl_timeout { + uint32_t seconds; +}; +#define _OUT(_field) offsetof(struct pfctl_nl_timeout, _field) +static struct snl_attr_parser ap_get_timeout[] = { + { .type = PF_TO_SECONDS, .off = _OUT(seconds), .cb = snl_attr_get_uint32 }, +}; +#undef _OUT +SNL_DECLARE_PARSER(get_timeout_parser, struct genlmsghdr, snl_f_p_empty, ap_get_timeout); + +int +pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds) +{ + struct snl_writer nw; + struct pfctl_nl_timeout to = {}; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TIMEOUT); + hdr->nlmsg_flags |= NLM_F_DUMP; + + snl_add_msg_attr_u32(&nw, PF_TO_TIMEOUT, timeout); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &get_timeout_parser, &to)) + continue; + } + + if (seconds != NULL) + *seconds = to.seconds; + + return (e.error); +} + +int +pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_SET_LIMIT); + + snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); + snl_add_msg_attr_u32(&nw, PF_LI_LIMIT, limit); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + } + + return (e.error); +} + +struct pfctl_nl_limit { + unsigned int limit; +}; +#define _OUT(_field) offsetof(struct pfctl_nl_limit, _field) +static struct snl_attr_parser ap_get_limit[] = { + { .type = PF_LI_LIMIT, .off = _OUT(limit), .cb = snl_attr_get_uint32 }, +}; +#undef _OUT +SNL_DECLARE_PARSER(get_limit_parser, struct genlmsghdr, snl_f_p_empty, ap_get_limit); + +int +pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit) +{ + struct snl_writer nw; + struct pfctl_nl_limit li = {}; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_LIMIT); + hdr->nlmsg_flags |= NLM_F_DUMP; + + snl_add_msg_attr_u32(&nw, PF_LI_INDEX, index); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &get_limit_parser, &li)) + continue; + } + + if (limit != NULL) + *limit = li.limit; + + return (e.error); +} + +struct pfctl_nl_begin_addrs { + uint32_t ticket; +}; +#define _OUT(_field) offsetof(struct pfctl_nl_begin_addrs, _field) +static struct snl_attr_parser ap_begin_addrs[] = { + { .type = PF_BA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, +}; +#undef _OUT +SNL_DECLARE_PARSER(begin_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_begin_addrs); + +int +pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket) +{ + struct snl_writer nw; + struct pfctl_nl_begin_addrs attrs = {}; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_BEGIN_ADDRS); + hdr->nlmsg_flags |= NLM_F_DUMP; + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &begin_addrs_parser, &attrs)) + continue; + } + + if (ticket != NULL) + *ticket = attrs.ticket; + + return (e.error); +} + +int +pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_ADDR); + + snl_add_msg_attr_u32(&nw, PF_AA_ACTION, pa->action); + snl_add_msg_attr_u32(&nw, PF_AA_TICKET, pa->ticket); + snl_add_msg_attr_u32(&nw, PF_AA_NR, pa->nr); + snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, pa->r_num); + snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, pa->r_action); + snl_add_msg_attr_u8(&nw, PF_AA_R_LAST, pa->r_last); + snl_add_msg_attr_u8(&nw, PF_AA_AF, pa->af); + snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, pa->anchor); + snl_add_msg_attr_pool_addr(&nw, PF_AA_ADDR, &pa->addr); + snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + } + + return (e.error); +} + +static const struct snl_attr_parser ap_get_addrs[] = { + { .type = PF_AA_NR, .off = 0, .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_PARSER(get_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addrs); + +int +pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, + uint8_t r_action, const char *anchor, uint32_t *nr, int which) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDRS); + + snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); + snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); + snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); + snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); + snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &get_addrs_parser, nr)) + continue; + } + + return (e.error); +} + +#define _OUT(_field) offsetof(struct pf_pooladdr, _field) +static const struct snl_attr_parser ap_pool_addr[] = { + { .type = PF_PA_ADDR, .off = _OUT(addr), .arg = &addr_wrap_parser, .cb = snl_attr_get_nested }, + { .type = PF_PA_IFNAME, .off = _OUT(ifname), .arg_u32 = IFNAMSIZ, .cb = snl_attr_copy_string }, +}; +SNL_DECLARE_ATTR_PARSER(pool_addr_parser, ap_pool_addr); +#undef _OUT + +#define _OUT(_field) offsetof(struct pfioc_pooladdr, _field) +static const struct snl_attr_parser ap_get_addr[] = { + { .type = PF_AA_ACTION, .off = _OUT(action), .cb = snl_attr_get_uint32 }, + { .type = PF_AA_TICKET, .off = _OUT(ticket), .cb = snl_attr_get_uint32 }, + { .type = PF_AA_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, + { .type = PF_AA_R_NUM, .off = _OUT(r_num), .cb = snl_attr_get_uint32 }, + { .type = PF_AA_R_ACTION, .off = _OUT(r_action), .cb = snl_attr_get_uint8 }, + { .type = PF_AA_R_LAST, .off = _OUT(r_last), .cb = snl_attr_get_uint8 }, + { .type = PF_AA_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, + { .type = PF_AA_ANCHOR, .off = _OUT(anchor), .arg_u32 = MAXPATHLEN, .cb = snl_attr_copy_string }, + { .type = PF_AA_ADDR, .off = _OUT(addr), .arg = &pool_addr_parser, .cb = snl_attr_get_nested }, +}; +SNL_DECLARE_PARSER(get_addr_parser, struct genlmsghdr, snl_f_p_empty, ap_get_addr); +#undef _OUT + +int +pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, + uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, + int which) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id =snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_ADDR); + + snl_add_msg_attr_u32(&nw, PF_AA_TICKET, ticket); + snl_add_msg_attr_u32(&nw, PF_AA_R_NUM, r_num); + snl_add_msg_attr_u8(&nw, PF_AA_R_ACTION, r_action); + snl_add_msg_attr_string(&nw, PF_AA_ANCHOR, anchor); + snl_add_msg_attr_u32(&nw, PF_AA_NR, nr); + snl_add_msg_attr_u32(&nw, PF_AA_WHICH, which); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &get_addr_parser, pa)) + continue; + } + + return (e.error); +} + +#define _OUT(_field) offsetof(struct pfioc_ruleset, _field) +static const struct snl_attr_parser ap_ruleset[] = { + { .type = PF_RS_NR, .off = _OUT(nr), .cb = snl_attr_get_uint32 }, + { .type = PF_RS_NAME, .off = _OUT(name), .arg = (void *)PF_ANCHOR_NAME_SIZE, .cb = snl_attr_copy_string }, +}; +SNL_DECLARE_PARSER(ruleset_parser, struct genlmsghdr, snl_f_p_empty, ap_ruleset); +#undef _OUT + +int +pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + struct pfioc_ruleset rs = {}; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESETS); + + snl_add_msg_attr_string(&nw, PF_RS_PATH, path); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, &rs)) + continue; + } + + *nr = rs.nr; + + return (e.error); +} + +int +pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_RULESET); + + snl_add_msg_attr_string(&nw, PF_RS_PATH, path); + snl_add_msg_attr_u32(&nw, PF_RS_NR, nr); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (! snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&h->ss, hdr, &ruleset_parser, rs)) + continue; + } + + return (e.error); +} + +#define _OUT(_field) offsetof(struct pfctl_src_node, _field) +static struct snl_attr_parser ap_srcnode[] = { + { .type = PF_SN_ADDR, .off = _OUT(addr), .cb = snl_attr_get_in6_addr }, + { .type = PF_SN_RADDR, .off = _OUT(raddr), .cb = snl_attr_get_in6_addr }, + { .type = PF_SN_RULE_NR, .off = _OUT(rule), .cb = snl_attr_get_uint32 }, + { .type = PF_SN_BYTES_IN, .off = _OUT(bytes[0]), .cb = snl_attr_get_uint64 }, + { .type = PF_SN_BYTES_OUT, .off = _OUT(bytes[1]), .cb = snl_attr_get_uint64 }, + { .type = PF_SN_PACKETS_IN, .off = _OUT(packets[0]), .cb = snl_attr_get_uint64 }, + { .type = PF_SN_PACKETS_OUT, .off = _OUT(packets[1]), .cb = snl_attr_get_uint64 }, + { .type = PF_SN_STATES, .off = _OUT(states), .cb = snl_attr_get_uint32 }, + { .type = PF_SN_CONNECTIONS, .off = _OUT(conn), .cb = snl_attr_get_uint32 }, + { .type = PF_SN_AF, .off = _OUT(af), .cb = snl_attr_get_uint8 }, + { .type = PF_SN_RULE_TYPE, .off = _OUT(ruletype), .cb = snl_attr_get_uint8 }, + { .type = PF_SN_CREATION, .off = _OUT(creation), .cb = snl_attr_get_uint64 }, + { .type = PF_SN_EXPIRE, .off = _OUT(expire), .cb = snl_attr_get_uint64 }, + { .type = PF_SN_CONNECTION_RATE, .off = _OUT(conn_rate), .arg = &pfctl_threshold_parser, .cb = snl_attr_get_nested }, + { .type = PF_SN_RAF, .off = _OUT(raf), .cb = snl_attr_get_uint8 }, + { .type = PF_SN_NODE_TYPE, .off = _OUT(type), .cb = snl_attr_get_uint8 }, +}; +#undef _OUT +SNL_DECLARE_PARSER(srcnode_parser, struct genlmsghdr, snl_f_p_empty, ap_srcnode); + +int +pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg) +{ + struct snl_writer nw; + struct pfctl_src_node sn; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + int ret; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_SRCNODES); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (!snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + bzero(&sn, sizeof(sn)); + if (!snl_parse_nlmsg(&h->ss, hdr, &srcnode_parser, &sn)) + continue; + + ret = fn(&sn, arg); + if (ret != 0) + return (ret); + } + + return (e.error); +} + +static struct snl_attr_parser ap_ndel[] = { + { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_PARSER(ndel_parser, struct genlmsghdr, snl_f_p_empty, ap_ndel); + +int +pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, + int *ndel, int flags) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLEAR_TABLES); + + snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); + snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); + snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); + snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (!snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) + continue; + } + + return (e.error); +} + +static struct snl_attr_parser ap_nadd[] = { + { .type = PF_T_NBR_ADDED, .off = 0, .cb = snl_attr_get_uint32 }, +}; +SNL_DECLARE_PARSER(nadd_parser, struct genlmsghdr, snl_f_p_empty, ap_nadd); +int +pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table, + int *nadd, int flags) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_ADD_TABLE); + + snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); + snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); + snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); + snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (!snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (!snl_parse_nlmsg(&h->ss, hdr, &nadd_parser, nadd)) + continue; + } + + return (e.error); +} + +int +pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table, + int *ndel, int flags) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_DEL_TABLE); + + snl_add_msg_attr_string(&nw, PF_T_ANCHOR, table->pfrt_anchor); + snl_add_msg_attr_string(&nw, PF_T_NAME, table->pfrt_name); + snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, table->pfrt_flags); + snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (!snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (!snl_parse_nlmsg(&h->ss, hdr, &ndel_parser, ndel)) + continue; + } + + return (e.error); +} + +static bool +snl_attr_get_uint64_into_int_array(struct snl_state *ss, struct nlattr *nla, + const void *arg, void *target) +{ + uint64_t *u64target; + struct snl_uint64_array a = { + .count = 0, + .max = (size_t)arg, + }; + bool error; + + u64target = malloc(a.max * sizeof(uint64_t)); + a.array = u64target; + + error = snl_parse_header(ss, NLA_DATA(nla), NLA_DATA_LEN(nla), &array_parser, &a); + if (! error) + return (error); + + for (size_t i = 0; i < a.count; i++) + ((int *)target)[i] = (int)u64target[i]; + + free(u64target); + + return (true); +} + +#define _OUT(_field) offsetof(struct pfr_table, _field) +static const struct snl_attr_parser ap_table[] = { + { .type = PF_T_ANCHOR, .off = _OUT(pfrt_anchor), .arg = (void *)MAXPATHLEN, .cb = snl_attr_copy_string }, + { .type = PF_T_NAME, .off = _OUT(pfrt_name), .arg = (void *)PF_TABLE_NAME_SIZE, .cb =snl_attr_copy_string }, + { .type = PF_T_TABLE_FLAGS, .off = _OUT(pfrt_flags), .cb = snl_attr_get_uint32 }, +}; +#undef _OUT +SNL_DECLARE_ATTR_PARSER(table_parser, ap_table); +#define _OUT(_field) offsetof(struct pfr_tstats, _field) +static struct snl_attr_parser ap_tstats[] = { + { .type = PF_TS_TABLE, .off = _OUT(pfrts_t), .arg = &table_parser, .cb = snl_attr_get_nested }, + { .type = PF_TS_PACKETS, .off = _OUT(pfrts_packets), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array}, + { .type = PF_TS_BYTES, .off = _OUT(pfrts_bytes), .arg = (void *)(PFR_DIR_MAX * PFR_OP_TABLE_MAX), .cb = snl_attr_get_uint64_array }, + { .type = PF_TS_MATCH, .off = _OUT(pfrts_match), .cb = snl_attr_get_uint64 }, + {. type = PF_TS_NOMATCH, .off = _OUT(pfrts_nomatch), .cb = snl_attr_get_uint64 }, + { .type = PF_TS_TZERO, .off = _OUT(pfrts_tzero), .cb = snl_attr_get_uint64 }, + { .type = PF_TS_REFCNT, .off = _OUT(pfrts_cnt), . arg = (void *)PFR_REFCNT_MAX, .cb = snl_attr_get_uint64_into_int_array }, +}; +#undef _OUT +SNL_DECLARE_PARSER(tstats_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats); + +int +pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter, + pfctl_get_tstats_fn fn, void *arg) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint32_t seq_id; + int family_id; + int ret; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_GET_TSTATS); + + snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); + snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); + snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (!snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + struct pfr_tstats tstats = {}; + + if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_parser, &tstats)) + continue; + + ret = fn(&tstats, arg); + if (ret != 0) + break; + } + + return (e.error); +} + +static struct snl_attr_parser ap_tstats_clr[] = { + { .type = PF_TS_NZERO, .off = 0, .cb = snl_attr_get_uint64 }, +}; +SNL_DECLARE_PARSER(tstats_clr_parser, struct genlmsghdr, snl_f_p_empty, ap_tstats_clr); + +int +pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter, + int *nzero, int flags) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint64_t zero; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_TSTATS); + + snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); + snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); + snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); + snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (!snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (!snl_parse_nlmsg(&h->ss, hdr, &tstats_clr_parser, &zero)) + continue; + if (nzero) + *nzero = (uint32_t)zero; + } + + return (e.error); +} + +static struct snl_attr_parser ap_clr_addrs[] = { + { .type = PF_T_NBR_DELETED, .off = 0, .cb = snl_attr_get_uint64 }, +}; +SNL_DECLARE_PARSER(clr_addrs_parser, struct genlmsghdr, snl_f_p_empty, ap_clr_addrs); + +int +pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter, + int *ndel, int flags) +{ + struct snl_writer nw; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + uint64_t del; + uint32_t seq_id; + int family_id; + + family_id = snl_get_genl_family(&h->ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&h->ss, &nw); + hdr = snl_create_genl_msg_request(&nw, family_id, PFNL_CMD_CLR_ADDRS); + + snl_add_msg_attr_string(&nw, PF_T_ANCHOR, filter->pfrt_anchor); + snl_add_msg_attr_string(&nw, PF_T_NAME, filter->pfrt_name); + snl_add_msg_attr_u32(&nw, PF_T_TABLE_FLAGS, filter->pfrt_flags); + snl_add_msg_attr_u32(&nw, PF_T_FLAGS, flags); + + if ((hdr = snl_finalize_msg(&nw)) == NULL) + return (ENXIO); + + seq_id = hdr->nlmsg_seq; + + if (!snl_send_message(&h->ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&h->ss, seq_id, &e)) != NULL) { + if (!snl_parse_nlmsg(&h->ss, hdr, &clr_addrs_parser, &del)) + continue; + if (ndel) + *ndel = (uint32_t)del; + } + + return (e.error); +} + diff --git a/lib/libpfctl/libpfctl.h b/lib/libpfctl/libpfctl.h new file mode 100644 index 000000000000..f6c8f6a2ccdb --- /dev/null +++ b/lib/libpfctl/libpfctl.h @@ -0,0 +1,578 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2021 Rubicon Communications, LLC (Netgate) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _PFCTL_IOCTL_H_ +#define _PFCTL_IOCTL_H_ + +#include <netpfil/pf/pf.h> + +struct pfctl_anchor; +struct pfctl_eth_anchor; + +struct pfctl_status_counter { + uint64_t id; + uint64_t counter; + char *name; + + TAILQ_ENTRY(pfctl_status_counter) entry; +}; +TAILQ_HEAD(pfctl_status_counters, pfctl_status_counter); + +struct pfctl_status { + bool running; + uint32_t since; + uint32_t debug; + uint32_t hostid; + uint64_t states; + uint64_t src_nodes; + char ifname[IFNAMSIZ]; + uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; + bool syncookies_active; + uint32_t reass; + + struct pfctl_status_counters counters; + struct pfctl_status_counters lcounters; + struct pfctl_status_counters fcounters; + struct pfctl_status_counters scounters; + uint64_t pcounters[2][2][2]; + uint64_t bcounters[2][2]; +}; + +struct pfctl_eth_rulesets_info { + uint32_t nr; +}; + +struct pfctl_eth_rules_info { + uint32_t nr; + uint32_t ticket; +}; + +struct pfctl_eth_addr { + uint8_t addr[ETHER_ADDR_LEN]; + uint8_t mask[ETHER_ADDR_LEN]; + bool neg; + bool isset; +}; + +struct pfctl_eth_rule { + uint32_t nr; + + char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; + uint32_t ridentifier; + + bool quick; + + /* Filter */ + char ifname[IFNAMSIZ]; + uint8_t ifnot; + uint8_t direction; + uint16_t proto; + struct pfctl_eth_addr src, dst; + struct pf_rule_addr ipsrc, ipdst; + char match_tagname[PF_TAG_NAME_SIZE]; + uint16_t match_tag; + bool match_tag_not; + + /* Stats */ + uint64_t evaluations; + uint64_t packets[2]; + uint64_t bytes[2]; + time_t last_active_timestamp; + + /* Action */ + char qname[PF_QNAME_SIZE]; + char tagname[PF_TAG_NAME_SIZE]; + uint16_t dnpipe; + uint32_t dnflags; + char bridge_to[IFNAMSIZ]; + uint8_t action; + + struct pfctl_eth_anchor *anchor; + uint8_t anchor_relative; + uint8_t anchor_wildcard; + + TAILQ_ENTRY(pfctl_eth_rule) entries; +}; +TAILQ_HEAD(pfctl_eth_rules, pfctl_eth_rule); + +struct pfctl_eth_ruleset_info { + uint32_t nr; + char name[PF_ANCHOR_NAME_SIZE]; + char path[MAXPATHLEN]; +}; + +struct pfctl_eth_ruleset { + struct pfctl_eth_rules rules; + struct pfctl_eth_anchor *anchor; +}; + +struct pfctl_eth_anchor { + struct pfctl_eth_anchor *parent; + char name[PF_ANCHOR_NAME_SIZE]; + char path[MAXPATHLEN]; + struct pfctl_eth_ruleset ruleset; + int refcnt; /* anchor rules */ + int match; /* XXX: used for pfctl black magic */ +}; + +struct pfctl_pooladdr { + struct pf_addr_wrap addr; + TAILQ_ENTRY(pfctl_pooladdr) entries; + char ifname[IFNAMSIZ]; + sa_family_t af; +}; + +TAILQ_HEAD(pfctl_palist, pfctl_pooladdr); + +struct pfctl_pool { + struct pfctl_palist list; + struct pfctl_pooladdr *cur; + struct pf_poolhashkey key; + struct pf_addr counter; + struct pf_mape_portset mape; + int tblidx; + uint16_t proxy_port[2]; + uint8_t opts; +}; + +struct pfctl_rules_info { + uint32_t nr; + uint32_t ticket; +}; + +struct pfctl_threshold { + uint32_t limit; + uint32_t seconds; + uint32_t count; + uint32_t last; +}; + +struct pfctl_rule { + struct pf_rule_addr src; + struct pf_rule_addr dst; + union pf_rule_ptr skip[PF_SKIP_COUNT]; + char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; + uint32_t ridentifier; + char ifname[IFNAMSIZ]; + char qname[PF_QNAME_SIZE]; + char pqname[PF_QNAME_SIZE]; + char tagname[PF_TAG_NAME_SIZE]; + char match_tagname[PF_TAG_NAME_SIZE]; + + char overload_tblname[PF_TABLE_NAME_SIZE]; + + TAILQ_ENTRY(pfctl_rule) entries; + struct pfctl_pool nat; + union { + /* Alias old and new names. */ + struct pfctl_pool rpool; + struct pfctl_pool rdr; + }; + struct pfctl_pool route; + struct pfctl_threshold pktrate; + + uint64_t evaluations; + uint64_t packets[2]; + uint64_t bytes[2]; + time_t last_active_timestamp; + + struct pfi_kif *kif; + struct pfctl_anchor *anchor; + struct pfr_ktable *overload_tbl; + + pf_osfp_t os_fingerprint; + + int rtableid; + uint32_t timeout[PFTM_MAX]; + uint32_t max_states; + uint32_t max_src_nodes; + uint32_t max_src_states; + uint32_t max_src_conn; + struct { + uint32_t limit; + uint32_t seconds; + } max_src_conn_rate; + uint16_t max_pkt_size; + uint32_t qid; + uint32_t pqid; + uint16_t dnpipe; + uint16_t dnrpipe; + uint32_t free_flags; + uint32_t nr; + uint32_t prob; + uid_t cuid; + pid_t cpid; + + uint64_t states_cur; + uint64_t states_tot; + uint64_t src_nodes; + uint64_t src_nodes_type[PF_SN_MAX]; + + uint16_t return_icmp; + uint16_t return_icmp6; + uint16_t max_mss; + uint16_t tag; + uint16_t match_tag; + uint16_t scrub_flags; + + struct pf_rule_uid uid; + struct pf_rule_gid gid; + char rcv_ifname[IFNAMSIZ]; + bool rcvifnot; + + uint32_t rule_flag; + uint8_t action; + uint8_t direction; + uint8_t log; + uint8_t logif; + uint8_t quick; + uint8_t ifnot; + uint8_t match_tag_not; + uint8_t natpass; + + uint8_t keep_state; + sa_family_t af; + uint8_t proto; + uint8_t type; + uint8_t code; + uint8_t flags; + uint8_t flagset; + uint8_t min_ttl; + uint8_t allow_opts; + uint8_t rt; + uint8_t return_ttl; + uint8_t tos; + uint8_t set_tos; + uint8_t anchor_relative; + uint8_t anchor_wildcard; + + uint8_t flush; + uint8_t prio; + uint8_t set_prio[2]; + sa_family_t naf; + + struct { + struct pf_addr addr; + uint16_t port; + } divert; +}; + +TAILQ_HEAD(pfctl_rulequeue, pfctl_rule); + +struct pfctl_ruleset { + struct { + struct pfctl_rulequeue queues[2]; + struct { + struct pfctl_rulequeue *ptr; + struct pfctl_rule **ptr_array; + uint32_t rcount; + uint32_t ticket; + int open; + } active, inactive; + } rules[PF_RULESET_MAX]; + struct pfctl_anchor *anchor; + uint32_t tticket; + int tables; + int topen; +}; + +RB_HEAD(pfctl_anchor_global, pfctl_anchor); +RB_HEAD(pfctl_anchor_node, pfctl_anchor); +struct pfctl_anchor { + RB_ENTRY(pfctl_anchor) entry_global; + RB_ENTRY(pfctl_anchor) entry_node; + struct pfctl_anchor *parent; + struct pfctl_anchor_node children; + char name[PF_ANCHOR_NAME_SIZE]; + char path[MAXPATHLEN]; + struct pfctl_ruleset ruleset; + int refcnt; /* anchor rules */ + int match; /* XXX: used for pfctl black magic */ +}; +RB_PROTOTYPE(pfctl_anchor_global, pfctl_anchor, entry_global, + pf_anchor_compare); +RB_PROTOTYPE(pfctl_anchor_node, pfctl_anchor, entry_node, + pf_anchor_compare); + +struct pfctl_state_cmp { + uint64_t id; + uint32_t creatorid; + uint8_t direction; +}; + +struct pfctl_kill { + struct pfctl_state_cmp cmp; + sa_family_t af; + int proto; + struct pf_rule_addr src; + struct pf_rule_addr dst; + struct pf_rule_addr rt_addr; + char ifname[IFNAMSIZ]; + char label[PF_RULE_LABEL_SIZE]; + bool kill_match; + bool nat; +}; + +struct pfctl_state_peer { + uint32_t seqlo; + uint32_t seqhi; + uint32_t seqdiff; + uint8_t state; + uint8_t wscale; +}; + +struct pfctl_state_key { + struct pf_addr addr[2]; + uint16_t port[2]; + sa_family_t af; + uint8_t proto; +}; + +struct pfctl_state { + TAILQ_ENTRY(pfctl_state) entry; + + uint64_t id; + uint32_t creatorid; + uint8_t direction; + + struct pfctl_state_peer src; + struct pfctl_state_peer dst; + + uint32_t rule; + uint32_t anchor; + uint32_t nat_rule; + struct pf_addr rt_addr; + struct pfctl_state_key key[2]; /* addresses stack and wire */ + char ifname[IFNAMSIZ]; + char orig_ifname[IFNAMSIZ]; + uint64_t packets[2]; + uint64_t bytes[2]; + uint32_t creation; + uint32_t expire; + uint32_t pfsync_time; + uint16_t state_flags; + uint32_t sync_flags; + uint16_t qid; + uint16_t pqid; + uint16_t dnpipe; + uint16_t dnrpipe; + uint8_t log; + int32_t rtableid; + uint8_t min_ttl; + uint8_t set_tos; + uint16_t max_mss; + uint8_t set_prio[2]; + uint8_t rt; + char rt_ifname[IFNAMSIZ]; + sa_family_t rt_af; + uint8_t src_node_flags; +}; + +TAILQ_HEAD(pfctl_statelist, pfctl_state); +struct pfctl_states { + struct pfctl_statelist states; +}; + +enum pfctl_syncookies_mode { + PFCTL_SYNCOOKIES_NEVER, + PFCTL_SYNCOOKIES_ALWAYS, + PFCTL_SYNCOOKIES_ADAPTIVE +}; +extern const char* PFCTL_SYNCOOKIES_MODE_NAMES[]; + +struct pfctl_syncookies { + enum pfctl_syncookies_mode mode; + uint8_t highwater; /* Percent */ + uint8_t lowwater; /* Percent */ + uint32_t halfopen_states; +}; + +struct pfctl_src_node { + struct pf_addr addr; + struct pf_addr raddr; + int rule; + uint64_t bytes[2]; + uint64_t packets[2]; + uint32_t states; + uint32_t conn; + sa_family_t af; + sa_family_t raf; + uint8_t ruletype; + uint64_t creation; + uint64_t expire; + struct pfctl_threshold conn_rate; + pf_sn_types_t type; +}; + +#define PF_DEVICE "/dev/pf" + +struct pfctl_handle; +struct pfctl_handle *pfctl_open(const char *pf_device); +void pfctl_close(struct pfctl_handle *); +int pfctl_fd(struct pfctl_handle *); + +int pfctl_startstop(struct pfctl_handle *h, int start); +struct pfctl_status* pfctl_get_status_h(struct pfctl_handle *h); +struct pfctl_status* pfctl_get_status(int dev); +int pfctl_clear_status(struct pfctl_handle *h); +uint64_t pfctl_status_counter(struct pfctl_status *status, int id); +uint64_t pfctl_status_lcounter(struct pfctl_status *status, int id); +uint64_t pfctl_status_fcounter(struct pfctl_status *status, int id); +uint64_t pfctl_status_scounter(struct pfctl_status *status, int id); +void pfctl_free_status(struct pfctl_status *status); + +int pfctl_get_eth_rulesets_info(int dev, + struct pfctl_eth_rulesets_info *ri, const char *path); +int pfctl_get_eth_ruleset(int dev, const char *path, int nr, + struct pfctl_eth_ruleset_info *ri); +int pfctl_get_eth_rules_info(int dev, struct pfctl_eth_rules_info *rules, + const char *path); +int pfctl_get_eth_rule(int dev, uint32_t nr, uint32_t ticket, + const char *path, struct pfctl_eth_rule *rule, bool clear, + char *anchor_call); +int pfctl_add_eth_rule(int dev, const struct pfctl_eth_rule *r, + const char *anchor, const char *anchor_call, uint32_t ticket); +int pfctl_get_rules_info_h(struct pfctl_handle *h, + struct pfctl_rules_info *rules, uint32_t ruleset, + const char *path); +int pfctl_get_rules_info(int dev, struct pfctl_rules_info *rules, + uint32_t ruleset, const char *path); +int pfctl_get_rule(int dev, uint32_t nr, uint32_t ticket, + const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, + char *anchor_call); +int pfctl_get_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, + const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, + char *anchor_call); +int pfctl_get_clear_rule(int dev, uint32_t nr, uint32_t ticket, + const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, + char *anchor_call, bool clear); +int pfctl_get_clear_rule_h(struct pfctl_handle *h, uint32_t nr, uint32_t ticket, + const char *anchor, uint32_t ruleset, struct pfctl_rule *rule, + char *anchor_call, bool clear); +int pfctl_add_rule(int dev, const struct pfctl_rule *r, + const char *anchor, const char *anchor_call, uint32_t ticket, + uint32_t pool_ticket); +int pfctl_add_rule_h(struct pfctl_handle *h, const struct pfctl_rule *r, + const char *anchor, const char *anchor_call, uint32_t ticket, + uint32_t pool_ticket); +int pfctl_set_keepcounters(int dev, bool keep); +int pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len); + +struct pfctl_state_filter { + char ifname[IFNAMSIZ]; + uint16_t proto; + sa_family_t af; + struct pf_addr addr; + struct pf_addr mask; +}; +typedef int (*pfctl_get_state_fn)(struct pfctl_state *, void *); +int pfctl_get_states_iter(pfctl_get_state_fn f, void *arg); +int pfctl_get_filtered_states_iter(struct pfctl_state_filter *filter, pfctl_get_state_fn f, void *arg); +int pfctl_get_states(int dev, struct pfctl_states *states); +void pfctl_free_states(struct pfctl_states *states); +int pfctl_clear_states(int dev, const struct pfctl_kill *kill, + unsigned int *killed); +int pfctl_kill_states(int dev, const struct pfctl_kill *kill, + unsigned int *killed); +int pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, + unsigned int *killed); +int pfctl_kill_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, + unsigned int *killed); +int pfctl_clear_rules(int dev, const char *anchorname); +int pfctl_clear_nat(int dev, const char *anchorname); +int pfctl_clear_eth_rules(int dev, const char *anchorname); +int pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s); +int pfctl_get_syncookies(int dev, struct pfctl_syncookies *s); +int pfctl_table_add_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *nadd, int flags); +int pfctl_table_add_addrs(int dev, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *nadd, int flags); +int pfctl_table_del_addrs_h(struct pfctl_handle *h, struct pfr_table *tbl, + struct pfr_addr *addr, int size, int *ndel, int flags); +int pfctl_table_del_addrs(int dev, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *ndel, int flags); +int pfctl_table_set_addrs(int dev, struct pfr_table *tbl, struct pfr_addr + *addr, int size, int *size2, int *nadd, int *ndel, int *nchange, + int flags); +int pfctl_table_get_addrs(int dev, struct pfr_table *tbl, struct pfr_addr + *addr, int *size, int flags); +int pfctl_set_statusif(struct pfctl_handle *h, const char *ifname); + +struct pfctl_natlook_key { + sa_family_t af; + uint8_t direction; + uint8_t proto; + struct pf_addr saddr; + struct pf_addr daddr; + uint16_t sport; + uint16_t dport; +}; +struct pfctl_natlook { + struct pf_addr saddr; + struct pf_addr daddr; + uint16_t sport; + uint16_t dport; +}; +int pfctl_natlook(struct pfctl_handle *h, + const struct pfctl_natlook_key *k, struct pfctl_natlook *r); +int pfctl_set_debug(struct pfctl_handle *h, uint32_t level); +int pfctl_set_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t seconds); +int pfctl_get_timeout(struct pfctl_handle *h, uint32_t timeout, uint32_t *seconds); +int pfctl_set_limit(struct pfctl_handle *h, const int index, const uint limit); +int pfctl_get_limit(struct pfctl_handle *h, const int index, uint *limit); +int pfctl_begin_addrs(struct pfctl_handle *h, uint32_t *ticket); +int pfctl_add_addr(struct pfctl_handle *h, const struct pfioc_pooladdr *pa, int which); +int pfctl_get_addrs(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, + uint8_t r_action, const char *anchor, uint32_t *nr, int which); +int pfctl_get_addr(struct pfctl_handle *h, uint32_t ticket, uint32_t r_num, + uint8_t r_action, const char *anchor, uint32_t nr, struct pfioc_pooladdr *pa, + int which); +int pfctl_get_rulesets(struct pfctl_handle *h, const char *path, uint32_t *nr); +int pfctl_get_ruleset(struct pfctl_handle *h, const char *path, uint32_t nr, struct pfioc_ruleset *rs); +typedef int (*pfctl_get_srcnode_fn)(struct pfctl_src_node*, void *); +int pfctl_get_srcnodes(struct pfctl_handle *h, pfctl_get_srcnode_fn fn, void *arg); + +int pfctl_clear_tables(struct pfctl_handle *h, struct pfr_table *filter, + int *ndel, int flags); +int pfctl_add_table(struct pfctl_handle *h, struct pfr_table *table, + int *nadd, int flags); +int pfctl_del_table(struct pfctl_handle *h, struct pfr_table *table, + int *ndel, int flags); + +typedef int (*pfctl_get_tstats_fn)(const struct pfr_tstats *t, void *arg); +int pfctl_get_tstats(struct pfctl_handle *h, const struct pfr_table *filter, + pfctl_get_tstats_fn fn, void *arg); +int pfctl_clear_tstats(struct pfctl_handle *h, const struct pfr_table *filter, + int *nzero, int flags); +int pfctl_clear_addrs(struct pfctl_handle *h, const struct pfr_table *filter, + int *ndel, int flags); + +#endif |