diff options
Diffstat (limited to 'lib/libpfctl/libpfctl.c')
| -rw-r--r-- | lib/libpfctl/libpfctl.c | 1950 |
1 files changed, 1581 insertions, 369 deletions
diff --git a/lib/libpfctl/libpfctl.c b/lib/libpfctl/libpfctl.c index aaf5998ed0d6..076cfd3400e6 100644 --- a/lib/libpfctl/libpfctl.c +++ b/lib/libpfctl/libpfctl.c @@ -27,8 +27,6 @@ * 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. - * - * $FreeBSD$ */ #include <sys/cdefs.h> @@ -42,14 +40,27 @@ #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", @@ -59,9 +70,92 @@ const char* PFCTL_SYNCOOKIES_MODE_NAMES[] = { 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); +} + +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, - u_int8_t *numbers, size_t *nelems) + uint8_t *numbers, size_t *nelems) { const uint64_t *tmp; size_t elems; @@ -78,7 +172,7 @@ pf_nvuint_8_array(const nvlist_t *nvl, const char *name, size_t maxelems, static void pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, - u_int16_t *numbers, size_t *nelems) + uint16_t *numbers, size_t *nelems) { const uint64_t *tmp; size_t elems; @@ -95,15 +189,14 @@ pf_nvuint_16_array(const nvlist_t *nvl, const char *name, size_t maxelems, static void pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, - u_int32_t *numbers, size_t *nelems) + uint32_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++) + for (size_t i = 0; i < elems && i < maxelems; i++) numbers[i] = tmp[i]; if (nelems) @@ -112,7 +205,7 @@ pf_nvuint_32_array(const nvlist_t *nvl, const char *name, size_t maxelems, static void pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, - u_int64_t *numbers, size_t *nelems) + uint64_t *numbers, size_t *nelems) { const uint64_t *tmp; size_t elems; @@ -127,6 +220,36 @@ pf_nvuint_64_array(const nvlist_t *nvl, const char *name, size_t maxelems, *nelems = elems; } +int +pfctl_startstop(struct pfctl_handle *h, int start) +{ + 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, + start ? PFNL_CMD_START : PFNL_CMD_STOP); + + 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 void _pfctl_get_status_counters(const nvlist_t *nvl, struct pfctl_status_counters *counters) @@ -147,6 +270,8 @@ _pfctl_get_status_counters(const nvlist_t *nvl, struct pfctl_status_counter *c; c = malloc(sizeof(*c)); + if (c == NULL) + continue; c->id = ids[i]; c->counter = counts[i]; @@ -159,7 +284,6 @@ _pfctl_get_status_counters(const nvlist_t *nvl, struct pfctl_status * pfctl_get_status(int dev) { - struct pfioc_nv nv; struct pfctl_status *status; nvlist_t *nvl; size_t len; @@ -169,18 +293,10 @@ pfctl_get_status(int dev) if (status == NULL) return (NULL); - nv.data = malloc(4096); - nv.len = nv.size = 4096; - - if (ioctl(dev, DIOCGETSTATUSNV, &nv)) { - free(nv.data); - free(status); - return (NULL); - } + nvl = nvlist_create(0); - nvl = nvlist_unpack(nv.data, nv.len, 0); - free(nv.data); - if (nvl == NULL) { + if (pfctl_do_ioctl(dev, DIOCGETSTATUSNV, 4096, &nvl)) { + nvlist_destroy(nvl); free(status); return (NULL); } @@ -188,9 +304,11 @@ pfctl_get_status(int dev) status->running = nvlist_get_bool(nvl, "running"); status->since = nvlist_get_number(nvl, "since"); status->debug = nvlist_get_number(nvl, "debug"); - status->hostid = nvlist_get_number(nvl, "hostid"); + 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); @@ -217,11 +335,51 @@ pfctl_get_status(int dev) return (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); @@ -287,14 +445,20 @@ pfctl_nv_add_addr_wrap(nvlist_t *nvparent, const char *name, 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) + if (addr->type == PF_ADDR_DYNIFTL) { strlcpy(addr->v.ifname, nvlist_get_string(nvl, "ifname"), IFNAMSIZ); - if (addr->type == PF_ADDR_TABLE) + 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); @@ -304,7 +468,7 @@ static void pfctl_nv_add_rule_addr(nvlist_t *nvparent, const char *name, const struct pf_rule_addr *addr) { - u_int64_t ports[2]; + uint64_t ports[2]; nvlist_t *nvl = nvlist_create(0); pfctl_nv_add_addr_wrap(nvl, "addr", &addr->addr); @@ -329,40 +493,6 @@ pf_nvrule_addr_to_rule_addr(const nvlist_t *nvl, struct pf_rule_addr *addr) } static void -pfctl_nv_add_mape(nvlist_t *nvparent, const char *name, - const struct pf_mape_portset *mape) -{ - nvlist_t *nvl = nvlist_create(0); - - nvlist_add_number(nvl, "offset", mape->offset); - nvlist_add_number(nvl, "psidlen", mape->psidlen); - nvlist_add_number(nvl, "psid", mape->psid); - nvlist_add_nvlist(nvparent, name, nvl); - nvlist_destroy(nvl); -} - -static void -pfctl_nv_add_pool(nvlist_t *nvparent, const char *name, - const struct pfctl_pool *pool) -{ - u_int64_t ports[2]; - nvlist_t *nvl = nvlist_create(0); - - nvlist_add_binary(nvl, "key", &pool->key, sizeof(pool->key)); - pfctl_nv_add_addr(nvl, "counter", &pool->counter); - nvlist_add_number(nvl, "tblidx", pool->tblidx); - - ports[0] = pool->proxy_port[0]; - ports[1] = pool->proxy_port[1]; - nvlist_add_number_array(nvl, "proxy_port", ports, 2); - nvlist_add_number(nvl, "opts", pool->opts); - pfctl_nv_add_mape(nvl, "mape", &pool->mape); - - nvlist_add_nvlist(nvparent, name, nvl); - nvlist_destroy(nvl); -} - -static void pf_nvmape_to_mape(const nvlist_t *nvl, struct pf_mape_portset *mape) { mape->offset = nvlist_get_number(nvl, "offset"); @@ -391,22 +521,6 @@ pf_nvpool_to_pool(const nvlist_t *nvl, struct pfctl_pool *pool) } static void -pfctl_nv_add_uid(nvlist_t *nvparent, const char *name, - const struct pf_rule_uid *uid) -{ - u_int64_t uids[2]; - nvlist_t *nvl = nvlist_create(0); - - uids[0] = uid->uid[0]; - uids[1] = uid->uid[1]; - nvlist_add_number_array(nvl, "uid", uids, 2); - nvlist_add_number(nvl, "op", uid->op); - - nvlist_add_nvlist(nvparent, name, nvl); - nvlist_destroy(nvl); -} - -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); @@ -414,19 +528,6 @@ pf_nvrule_uid_to_rule_uid(const nvlist_t *nvl, struct pf_rule_uid *uid) } static void -pfctl_nv_add_divert(nvlist_t *nvparent, const char *name, - const struct pfctl_rule *r) -{ - nvlist_t *nvl = nvlist_create(0); - - pfctl_nv_add_addr(nvl, "addr", &r->divert.addr); - nvlist_add_number(nvl, "port", r->divert.port); - - nvlist_add_nvlist(nvparent, name, nvl); - nvlist_destroy(nvl); -} - -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); @@ -455,6 +556,7 @@ pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 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); @@ -472,6 +574,10 @@ pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 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"); @@ -539,141 +645,875 @@ pf_nvrule_to_rule(const nvlist_t *nvl, struct pfctl_rule *rule) 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_add_rule(int dev, const struct pfctl_rule *r, const char *anchor, - const char *anchor_call, u_int32_t ticket, u_int32_t pool_ticket) +pfctl_get_eth_rulesets_info(int dev, struct pfctl_eth_rulesets_info *ri, + const char *path) { - struct pfioc_nv nv; - u_int64_t timeouts[PFTM_MAX]; - u_int64_t set_prio[2]; - nvlist_t *nvl, *nvlr; - size_t labelcount; + 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); - nvlr = 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_number(nvl, "pool_ticket", pool_ticket); nvlist_add_string(nvl, "anchor", anchor); nvlist_add_string(nvl, "anchor_call", anchor_call); - nvlist_add_number(nvlr, "nr", r->nr); - pfctl_nv_add_rule_addr(nvlr, "src", &r->src); - pfctl_nv_add_rule_addr(nvlr, "dst", &r->dst); + 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 (r->label[labelcount][0] != 0 && - labelcount < PF_RULE_MAX_LABEL_COUNT) { - nvlist_append_string_array(nvlr, "labels", + 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(nvlr, "ifname", r->ifname); - nvlist_add_string(nvlr, "qname", r->qname); - nvlist_add_string(nvlr, "pqname", r->pqname); - nvlist_add_string(nvlr, "tagname", r->tagname); - nvlist_add_string(nvlr, "match_tagname", r->match_tagname); - nvlist_add_string(nvlr, "overload_tblname", r->overload_tblname); + 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); - pfctl_nv_add_pool(nvlr, "rpool", &r->rpool); + nvlist_add_string(nvl, "bridge_to", r->bridge_to); - nvlist_add_number(nvlr, "os_fingerprint", r->os_fingerprint); + nvlist_add_number(nvl, "action", r->action); - nvlist_add_number(nvlr, "rtableid", r->rtableid); - for (int i = 0; i < PFTM_MAX; i++) - timeouts[i] = r->timeout[i]; - nvlist_add_number_array(nvlr, "timeout", timeouts, PFTM_MAX); - nvlist_add_number(nvlr, "max_states", r->max_states); - nvlist_add_number(nvlr, "max_src_nodes", r->max_src_nodes); - nvlist_add_number(nvlr, "max_src_states", r->max_src_states); - nvlist_add_number(nvlr, "max_src_conn", r->max_src_conn); - nvlist_add_number(nvlr, "max_src_conn_rate.limit", - r->max_src_conn_rate.limit); - nvlist_add_number(nvlr, "max_src_conn_rate.seconds", - r->max_src_conn_rate.seconds); - nvlist_add_number(nvlr, "dnpipe", r->dnpipe); - nvlist_add_number(nvlr, "dnrpipe", r->dnrpipe); - nvlist_add_number(nvlr, "dnflags", r->free_flags); - nvlist_add_number(nvlr, "prob", r->prob); - nvlist_add_number(nvlr, "cuid", r->cuid); - nvlist_add_number(nvlr, "cpid", r->cpid); - - nvlist_add_number(nvlr, "return_icmp", r->return_icmp); - nvlist_add_number(nvlr, "return_icmp6", r->return_icmp6); - - nvlist_add_number(nvlr, "max_mss", r->max_mss); - nvlist_add_number(nvlr, "scrub_flags", r->scrub_flags); - - pfctl_nv_add_uid(nvlr, "uid", &r->uid); - pfctl_nv_add_uid(nvlr, "gid", (const struct pf_rule_uid *)&r->gid); - - nvlist_add_number(nvlr, "rule_flag", r->rule_flag); - nvlist_add_number(nvlr, "action", r->action); - nvlist_add_number(nvlr, "direction", r->direction); - nvlist_add_number(nvlr, "log", r->log); - nvlist_add_number(nvlr, "logif", r->logif); - nvlist_add_number(nvlr, "quick", r->quick); - nvlist_add_number(nvlr, "ifnot", r->ifnot); - nvlist_add_number(nvlr, "match_tag_not", r->match_tag_not); - nvlist_add_number(nvlr, "natpass", r->natpass); - - nvlist_add_number(nvlr, "keep_state", r->keep_state); - nvlist_add_number(nvlr, "af", r->af); - nvlist_add_number(nvlr, "proto", r->proto); - nvlist_add_number(nvlr, "type", r->type); - nvlist_add_number(nvlr, "code", r->code); - nvlist_add_number(nvlr, "flags", r->flags); - nvlist_add_number(nvlr, "flagset", r->flagset); - nvlist_add_number(nvlr, "min_ttl", r->min_ttl); - nvlist_add_number(nvlr, "allow_opts", r->allow_opts); - nvlist_add_number(nvlr, "rt", r->rt); - nvlist_add_number(nvlr, "return_ttl", r->return_ttl); - nvlist_add_number(nvlr, "tos", r->tos); - nvlist_add_number(nvlr, "set_tos", r->set_tos); - nvlist_add_number(nvlr, "anchor_relative", r->anchor_relative); - nvlist_add_number(nvlr, "anchor_wildcard", r->anchor_wildcard); - - nvlist_add_number(nvlr, "flush", r->flush); - - nvlist_add_number(nvlr, "prio", r->prio); - set_prio[0] = r->set_prio[0]; - set_prio[1] = r->set_prio[1]; - nvlist_add_number_array(nvlr, "set_prio", set_prio, 2); - - pfctl_nv_add_divert(nvlr, "divert", r); - - nvlist_add_nvlist(nvl, "rule", nvlr); - nvlist_destroy(nvlr); - - /* Now do the call. */ - nv.data = nvlist_pack(nvl, &nv.len); - nv.size = nv.len; + packed = nvlist_pack(nvl, &size); + if (packed == NULL) { + nvlist_destroy(nvl); + return (ENOMEM); + } - ret = ioctl(dev, DIOCADDRULENV, &nv); + nv.len = size; + nv.size = size; + nv.data = packed; - free(nv.data); + 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_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_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, &r->rpool); + 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_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_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_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_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_get_rule(int dev, u_int32_t nr, u_int32_t ticket, const char *anchor, - u_int32_t ruleset, struct pfctl_rule *rule, char *anchor_call) +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 }, +}; +static struct snl_field_parser fp_getrules[] = { +}; +#undef _IN +#undef _OUT +SNL_DECLARE_PARSER(getrules_parser, struct genlmsghdr, fp_getrules, ap_getrules); + +int +pfctl_get_rules_info(int dev __unused, struct pfctl_rules_info *rules, uint32_t ruleset, + const char *path) +{ + struct snl_state ss = {}; + struct snl_errmsg_data e = {}; + struct nlmsghdr *hdr; + struct snl_writer nw; + uint32_t seq_id; + int family_id; + + snl_init(&ss, NETLINK_GENERIC); + family_id = snl_get_genl_family(&ss, PFNL_FAMILY_NAME); + if (family_id == 0) + return (ENOTSUP); + + snl_init_writer(&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(&ss, hdr)) + return (ENXIO); + + while ((hdr = snl_read_reply_multi(&ss, seq_id, &e)) != NULL) { + if (! snl_parse_nlmsg(&ss, hdr, &getrules_parser, rules)) + continue; + } + + return (e.error); +} + +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)); } -int pfctl_get_clear_rule(int dev, u_int32_t nr, u_int32_t ticket, - const char *anchor, u_int32_t ruleset, struct pfctl_rule *rule, +#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 + +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, .off = _OUT(r.rpool), .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 }, +}; +static struct snl_field_parser fp_getrule[] = {}; +#undef _OUT +SNL_DECLARE_PARSER(getrule_parser, struct genlmsghdr, fp_getrule, 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) { - struct pfioc_nv nv; nvlist_t *nvl; - void *nvlpacked; int ret; nvl = nvlist_create(0); @@ -688,30 +1528,8 @@ int pfctl_get_clear_rule(int dev, u_int32_t nr, u_int32_t ticket, if (clear) nvlist_add_bool(nvl, "clear_counter", true); - nvlpacked = nvlist_pack(nvl, &nv.len); - if (nvlpacked == NULL) { - nvlist_destroy(nvl); - return (ENOMEM); - } - nv.data = malloc(8182); - nv.size = 8192; - assert(nv.len <= nv.size); - memcpy(nv.data, nvlpacked, nv.len); - nvlist_destroy(nvl); - nvl = NULL; - free(nvlpacked); - - ret = ioctl(dev, DIOCGETRULENV, &nv); - if (ret != 0) { - free(nv.data); - return (ret); - } - - nvl = nvlist_unpack(nv.data, nv.len, 0); - if (nvl == NULL) { - free(nv.data); - return (EIO); - } + if ((ret = pfctl_do_ioctl(dev, DIOCGETRULENV, 8192, &nvl)) != 0) + goto out; pf_nvrule_to_rule(nvlist_get_nvlist(nvl, "rule"), rule); @@ -719,10 +1537,9 @@ int pfctl_get_clear_rule(int dev, u_int32_t nr, u_int32_t ticket, strlcpy(anchor_call, nvlist_get_string(nvl, "anchor_call"), MAXPATHLEN); - free(nv.data); +out: nvlist_destroy(nvl); - - return (0); + return (ret); } int @@ -747,132 +1564,262 @@ pfctl_set_keepcounters(int dev, bool keep) return (ret); } -static void -pfctl_nv_add_state_cmp(nvlist_t *nvl, const char *name, - const struct pfctl_state_cmp *cmp) +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 }, +}; +static struct snl_field_parser fp_creators[] = { +}; +#undef _IN +#undef _OUT +SNL_DECLARE_PARSER(creator_parser, struct genlmsghdr, fp_creators, ap_creators); + +static int +pfctl_get_creators_nl(struct snl_state *ss, uint32_t *creators, size_t *len) { - nvlist_t *nv; - nv = nvlist_create(0); + int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); + size_t i = 0; - nvlist_add_number(nv, "id", cmp->id); - nvlist_add_number(nv, "creatorid", cmp->creatorid); - nvlist_add_number(nv, "direction", cmp->direction); + struct nlmsghdr *hdr; + struct snl_writer nw; - nvlist_add_nvlist(nvl, name, nv); - nvlist_destroy(nv); + 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); } -static void -pf_state_key_export_to_state_key(struct pfctl_state_key *ps, - const struct pf_state_key_export *s) +int +pfctl_get_creatorids(struct pfctl_handle *h, uint32_t *creators, size_t *len) { - bcopy(s->addr, ps->addr, sizeof(ps->addr[0]) * 2); - ps->port[0] = s->port[0]; - ps->port[1] = s->port[1]; + int error; + + error = pfctl_get_creators_nl(&h->ss, creators, len); + + return (error); } -static void -pf_state_peer_export_to_state_peer(struct pfctl_state_peer *ps, - const struct pf_state_peer_export *s) +static inline bool +snl_attr_get_pfaddr(struct snl_state *ss __unused, struct nlattr *nla, + const void *arg __unused, void *target) { - /* Ignore scrub. */ - ps->seqlo = s->seqlo; - ps->seqhi = s->seqhi; - ps->seqdiff = s->seqdiff; - /* Ignore max_win & mss */ - ps->state = s->state; - ps->wscale = s->wscale; + memcpy(target, NLA_DATA(nla), NLA_DATA_LEN(nla)); + return (true); } -static void -pf_state_export_to_state(struct pfctl_state *ps, const struct pf_state_export *s) -{ - assert(s->version >= PF_STATE_VERSION); - - ps->id = s->id; - strlcpy(ps->ifname, s->ifname, sizeof(ps->ifname)); - strlcpy(ps->orig_ifname, s->orig_ifname, sizeof(ps->orig_ifname)); - pf_state_key_export_to_state_key(&ps->key[0], &s->key[0]); - pf_state_key_export_to_state_key(&ps->key[1], &s->key[1]); - pf_state_peer_export_to_state_peer(&ps->src, &s->src); - pf_state_peer_export_to_state_peer(&ps->dst, &s->dst); - bcopy(&s->rt_addr, &ps->rt_addr, sizeof(ps->rt_addr)); - ps->rule = ntohl(s->rule); - ps->anchor = ntohl(s->anchor); - ps->nat_rule = ntohl(s->nat_rule); - ps->creation = ntohl(s->creation); - ps->expire = ntohl(s->expire); - ps->packets[0] = s->packets[0]; - ps->packets[1] = s->packets[1]; - ps->bytes[0] = s->bytes[0]; - ps->bytes[1] = s->bytes[1]; - ps->creatorid = s->creatorid; - ps->key[0].proto = s->proto; - ps->key[1].proto = s->proto; - ps->key[0].af = s->af; - ps->key[1].af = s->af; - ps->direction = s->direction; - ps->state_flags = s->state_flags; - ps->sync_flags = s->sync_flags; +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); } -int -pfctl_get_states(int dev, struct pfctl_states *states) +#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 pf_state_key_export, _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 }, +}; +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_AF, .off = _OUT(key[0].af), .cb = snl_attr_get_uint8 }, + { .type = PF_ST_PROTO, .off = _OUT(key[0].proto), .cb = snl_attr_get_uint8 }, + { .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 }, +}; +static struct snl_field_parser fp_state[] = { +}; +#undef _IN +#undef _OUT +SNL_DECLARE_PARSER(state_parser, struct genlmsghdr, fp_state, 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) { - struct pfioc_states_v2 ps; - struct pf_state_export *p; - char *inbuf = NULL, *newinbuf = NULL; - unsigned int len = 0; - int i, error; + SNL_VERIFY_PARSERS(all_parsers); + int family_id = snl_get_genl_family(ss, PFNL_FAMILY_NAME); + int ret; - bzero(&ps, sizeof(ps)); - ps.ps_req_version = PF_STATE_VERSION; + struct nlmsghdr *hdr; + struct snl_writer nw; - bzero(states, sizeof(*states)); - TAILQ_INIT(&states->states); + if (family_id == 0) + return (ENOTSUP); - for (;;) { - ps.ps_len = len; - if (len) { - newinbuf = realloc(inbuf, len); - if (newinbuf == NULL) - return (ENOMEM); - ps.ps_buf = inbuf = newinbuf; - } - if ((error = ioctl(dev, DIOCGETSTATESV2, &ps)) < 0) { - free(inbuf); - return (error); - } - if (ps.ps_len + sizeof(struct pfioc_states_v2) < len) - break; - if (len == 0 && ps.ps_len == 0) - goto out; - if (len == 0 && ps.ps_len != 0) - len = ps.ps_len; - if (ps.ps_len == 0) - goto out; /* no states */ - len *= 2; - } - p = ps.ps_states; + 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); - for (i = 0; i < ps.ps_len; i += sizeof(*p), p++) { - struct pfctl_state *s = malloc(sizeof(*s)); - if (s == NULL) { - pfctl_free_states(states); - error = ENOMEM; - goto out; - } + hdr = snl_finalize_msg(&nw); + if (hdr == NULL) + return (ENOMEM); + + uint32_t seq_id = hdr->nlmsg_seq; - pf_state_export_to_state(s, p); - TAILQ_INSERT_TAIL(&states->states, s, entry); + 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; + + s.key[1].af = s.key[0].af; + s.key[1].proto = s.key[0].proto; + + ret = f(&s, arg); + if (ret != 0) + return (ret); } -out: - free(inbuf); + 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) { @@ -885,67 +1832,203 @@ pfctl_free_states(struct pfctl_states *states) 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 }, +}; +static struct snl_field_parser fp_clear_states[] = {}; +#undef _OUT +SNL_DECLARE_PARSER(clear_states_parser, struct genlmsghdr, fp_clear_states, ap_clear_states); + static int -_pfctl_clear_states(int dev, const struct pfctl_kill *kill, - unsigned int *killed, uint64_t ioctlval) +_pfctl_clear_states_h(struct pfctl_handle *h, const struct pfctl_kill *kill, + unsigned int *killed, int cmd) { - struct pfioc_nv nv; - nvlist_t *nvl; - int ret; + 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; + } - nvl = nvlist_create(0); + if (killed) + *killed = attrs.killed; - pfctl_nv_add_state_cmp(nvl, "cmp", &kill->cmp); - nvlist_add_number(nvl, "af", kill->af); - nvlist_add_number(nvl, "proto", kill->proto); - pfctl_nv_add_rule_addr(nvl, "src", &kill->src); - pfctl_nv_add_rule_addr(nvl, "dst", &kill->dst); - pfctl_nv_add_rule_addr(nvl, "rt_addr", &kill->rt_addr); - nvlist_add_string(nvl, "ifname", kill->ifname); - nvlist_add_string(nvl, "label", kill->label); - nvlist_add_bool(nvl, "kill_match", kill->kill_match); + return (e.error); +} - nv.data = nvlist_pack(nvl, &nv.len); - nv.size = nv.len; - nvlist_destroy(nvl); - nvl = NULL; +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)); +} - ret = ioctl(dev, ioctlval, &nv); - if (ret != 0) { - free(nv.data); - return (ret); - } +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)); +} - nvl = nvlist_unpack(nv.data, nv.len, 0); - if (nvl == NULL) { - free(nv.data); - return (EIO); - } +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; - if (killed) - *killed = nvlist_get_number(nvl, "killed"); + h = pfctl_open(PF_DEVICE); + if (h == NULL) + return (ENODEV); - nvlist_destroy(nvl); - free(nv.data); + ret = _pfctl_clear_states_h(h, kill, killed, cmd); + pfctl_close(h); return (ret); } int -pfctl_clear_states(int dev, const struct pfctl_kill *kill, +pfctl_clear_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) { - return (_pfctl_clear_states(dev, kill, killed, DIOCCLRSTATESNV)); + return (_pfctl_clear_states(dev, kill, killed, PFNL_CMD_CLRSTATES)); } int -pfctl_kill_states(int dev, const struct pfctl_kill *kill, unsigned int *killed) +pfctl_kill_states(int dev __unused, const struct pfctl_kill *kill, unsigned int *killed) { - return (_pfctl_clear_states(dev, kill, killed, DIOCKILLSTATESNV)); + 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 (ret); + return ioctl(dev, DIOCXCOMMIT, &trans); +} + +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 (ret); + return ioctl(dev, DIOCXCOMMIT, &trans); +} +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 (ret); + return ioctl(dev, DIOCXCOMMIT, &trans); } static int -pfctl_get_limit(int dev, const int index, u_int *limit) +pfctl_get_limit(int dev, const int index, uint *limit) { struct pfioc_limit pl; @@ -966,18 +2049,26 @@ pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) struct pfioc_nv nv; nvlist_t *nvl; int ret; - u_int state_limit; + uint state_limit; + uint64_t lim, hi, lo; ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); if (ret != 0) return (ret); + 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", state_limit * s->highwater / 100); - nvlist_add_number(nvl, "lowwater", state_limit * s->lowwater / 100); + nvlist_add_number(nvl, "highwater", hi); + nvlist_add_number(nvl, "lowwater", lo); nv.data = nvlist_pack(nvl, &nv.len); nv.size = nv.len; @@ -993,10 +2084,9 @@ pfctl_set_syncookies(int dev, const struct pfctl_syncookies *s) int pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) { - struct pfioc_nv nv; nvlist_t *nvl; int ret; - u_int state_limit; + uint state_limit; bool enabled, adaptive; ret = pfctl_get_limit(dev, PF_LIMIT_STATES, &state_limit); @@ -1005,18 +2095,11 @@ pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) bzero(s, sizeof(*s)); - nv.data = malloc(256); - nv.len = nv.size = 256; - - if (ioctl(dev, DIOCGETSYNCOOKIES, &nv)) { - free(nv.data); - return (errno); - } + nvl = nvlist_create(0); - nvl = nvlist_unpack(nv.data, nv.len, 0); - free(nv.data); - if (nvl == NULL) { - return (EIO); + if ((ret = pfctl_do_ioctl(dev, DIOCGETSYNCOOKIES, 256, &nvl)) != 0) { + ret = errno; + goto out; } enabled = nvlist_get_bool(nvl, "enabled"); @@ -1033,8 +2116,137 @@ pfctl_get_syncookies(int dev, struct pfctl_syncookies *s) 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); +} + +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_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 (-1); + 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 (-1); + *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); +} |