/* $NetBSD: pf_ioctl.c,v 1.16 2005/03/15 18:08:59 peter Exp $ */ /* $OpenBSD: pf_ioctl.c,v 1.130.2.1 2004/12/19 19:01:50 brad Exp $ */ /* * Copyright (c) 2001 Daniel Hartmeier * Copyright (c) 2002,2003 Henning Brauer * 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. * * Effort sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F30602-01-2-0537. * */ #ifdef _KERNEL_OPT #include "opt_inet.h" #include "opt_altq.h" #include "opt_pfil_hooks.h" #endif #ifdef __OpenBSD__ #include "pfsync.h" #else #define NPFSYNC 0 #endif #include #include #include #include #include #include #include #include #include #ifdef __OpenBSD__ #include #else #include #endif #include #include #ifdef __NetBSD__ #include #endif #include #include #include #include #include #include #include #include #include #ifdef __OpenBSD__ #include #endif #include #if NPFSYNC > 0 #include #endif /* NPFSYNC > 0 */ #ifdef INET6 #include #include #endif /* INET6 */ #ifdef ALTQ #include #endif void pfattach(int); #ifdef _LKM void pfdetach(void); #endif int pfopen(dev_t, int, int, struct proc *); int pfclose(dev_t, int, int, struct proc *); struct pf_pool *pf_get_pool(char *, u_int32_t, u_int8_t, u_int32_t, u_int8_t, u_int8_t, u_int8_t); int pf_get_ruleset_number(u_int8_t); void pf_init_ruleset(struct pf_ruleset *); int pf_anchor_setup(struct pf_rule *, const struct pf_ruleset *, const char *); int pf_anchor_copyout(const struct pf_ruleset *, const struct pf_rule *, struct pfioc_rule *); void pf_anchor_remove(struct pf_rule *); void pf_mv_pool(struct pf_palist *, struct pf_palist *); void pf_empty_pool(struct pf_palist *); int pfioctl(dev_t, u_long, caddr_t, int, struct proc *); #ifdef ALTQ int pf_begin_altq(u_int32_t *); int pf_rollback_altq(u_int32_t); int pf_commit_altq(u_int32_t); int pf_enable_altq(struct pf_altq *); int pf_disable_altq(struct pf_altq *); #endif /* ALTQ */ int pf_begin_rules(u_int32_t *, int, const char *); int pf_rollback_rules(u_int32_t, int, char *); int pf_commit_rules(u_int32_t, int, char *); #ifdef __NetBSD__ const struct cdevsw pf_cdevsw = { pfopen, pfclose, noread, nowrite, pfioctl, nostop, notty, nopoll, nommap, nokqfilter, }; static int pf_pfil_attach(void); static int pf_pfil_detach(void); static int pf_pfil_attached = 0; #endif #ifdef __OpenBSD__ extern struct timeout pf_expire_to; #else extern struct callout pf_expire_to; #endif struct pf_rule pf_default_rule; #ifdef ALTQ static int pf_altq_running; #endif #define TAGID_MAX 50000 TAILQ_HEAD(pf_tags, pf_tagname) pf_tags = TAILQ_HEAD_INITIALIZER(pf_tags), pf_qids = TAILQ_HEAD_INITIALIZER(pf_qids); #if (PF_QNAME_SIZE != PF_TAG_NAME_SIZE) #error PF_QNAME_SIZE must be equal to PF_TAG_NAME_SIZE #endif static u_int16_t tagname2tag(struct pf_tags *, char *); static void tag2tagname(struct pf_tags *, u_int16_t, char *); static void tag_unref(struct pf_tags *, u_int16_t); #define DPFPRINTF(n, x) if (pf_status.debug >= (n)) printf x #ifdef __NetBSD__ extern struct pfil_head if_pfil; #endif void pfattach(int num) { u_int32_t *timeout = pf_default_rule.timeout; pool_init(&pf_rule_pl, sizeof(struct pf_rule), 0, 0, 0, "pfrulepl", &pool_allocator_nointr); pool_init(&pf_src_tree_pl, sizeof(struct pf_src_node), 0, 0, 0, "pfsrctrpl", NULL); pool_init(&pf_state_pl, sizeof(struct pf_state), 0, 0, 0, "pfstatepl", NULL); pool_init(&pf_altq_pl, sizeof(struct pf_altq), 0, 0, 0, "pfaltqpl", &pool_allocator_nointr); pool_init(&pf_pooladdr_pl, sizeof(struct pf_pooladdr), 0, 0, 0, "pfpooladdrpl", &pool_allocator_nointr); pfr_initialize(); pfi_initialize(); pf_osfp_initialize(); pool_sethardlimit(pf_pool_limits[PF_LIMIT_STATES].pp, pf_pool_limits[PF_LIMIT_STATES].limit, NULL, 0); RB_INIT(&tree_src_tracking); RB_INIT(&pf_anchors); pf_init_ruleset(&pf_main_ruleset); TAILQ_INIT(&pf_altqs[0]); TAILQ_INIT(&pf_altqs[1]); TAILQ_INIT(&pf_pabuf); pf_altqs_active = &pf_altqs[0]; pf_altqs_inactive = &pf_altqs[1]; TAILQ_INIT(&state_updates); /* default rule should never be garbage collected */ pf_default_rule.entries.tqe_prev = &pf_default_rule.entries.tqe_next; pf_default_rule.action = PF_PASS; pf_default_rule.nr = -1; /* initialize default timeouts */ timeout[PFTM_TCP_FIRST_PACKET] = 120; /* First TCP packet */ timeout[PFTM_TCP_OPENING] = 30; /* No response yet */ timeout[PFTM_TCP_ESTABLISHED] = 24*60*60; /* Established */ timeout[PFTM_TCP_CLOSING] = 15 * 60; /* Half closed */ timeout[PFTM_TCP_FIN_WAIT] = 45; /* Got both FINs */ timeout[PFTM_TCP_CLOSED] = 90; /* Got a RST */ timeout[PFTM_UDP_FIRST_PACKET] = 60; /* First UDP packet */ timeout[PFTM_UDP_SINGLE] = 30; /* Unidirectional */ timeout[PFTM_UDP_MULTIPLE] = 60; /* Bidirectional */ timeout[PFTM_ICMP_FIRST_PACKET] = 20; /* First ICMP packet */ timeout[PFTM_ICMP_ERROR_REPLY] = 10; /* Got error response */ timeout[PFTM_OTHER_FIRST_PACKET] = 60; /* First packet */ timeout[PFTM_OTHER_SINGLE] = 30; /* Unidirectional */ timeout[PFTM_OTHER_MULTIPLE] = 60; /* Bidirectional */ timeout[PFTM_FRAG] = 30; /* Fragment expire */ timeout[PFTM_INTERVAL] = 10; /* Expire interval */ timeout[PFTM_SRC_NODE] = 0; /* Source tracking */ timeout[PFTM_TS_DIFF] = 30; /* Allowed TS diff */ #ifdef __OpenBSD__ timeout_set(&pf_expire_to, pf_purge_timeout, &pf_expire_to); timeout_add(&pf_expire_to, timeout[PFTM_INTERVAL] * hz); #else callout_init(&pf_expire_to); callout_reset(&pf_expire_to, timeout[PFTM_INTERVAL] * hz, pf_purge_timeout, &pf_expire_to); #endif pf_normalize_init(); bzero(&pf_status, sizeof(pf_status)); pf_status.debug = PF_DEBUG_URGENT; /* XXX do our best to avoid a conflict */ pf_status.hostid = arc4random(); } #ifdef _LKM void pfdetach(void) { struct pf_anchor *anchor; struct pf_state *state; struct pf_src_node *node; struct pfioc_table pt; u_int32_t ticket; int i; char r = '\0'; (void)pf_pfil_detach(); callout_stop(&pf_expire_to); pf_status.running = 0; /* clear the rulesets */ for (i = 0; i < PF_RULESET_MAX; i++) if (pf_begin_rules(&ticket, i, &r) == 0) pf_commit_rules(ticket, i, &r); #ifdef ALTQ if (pf_begin_altq(&ticket) == 0) pf_commit_altq(ticket); #endif /* clear states */ RB_FOREACH(state, pf_state_tree_id, &tree_id) { state->timeout = PFTM_PURGE; #if NPFSYNC state->sync_flags = PFSTATE_NOSYNC; #endif } pf_purge_expired_states(); #if NPFSYNC pfsync_clear_states(pf_status.hostid, NULL); #endif /* clear source nodes */ RB_FOREACH(state, pf_state_tree_id, &tree_id) { state->src_node = NULL; state->nat_src_node = NULL; } RB_FOREACH(node, pf_src_tree, &tree_src_tracking) { node->expire = 1; node->states = 0; } pf_purge_expired_src_nodes(); /* clear tables */ memset(&pt, '\0', sizeof(pt)); pfr_clr_tables(&pt.pfrio_table, &pt.pfrio_ndel, pt.pfrio_flags); /* destroy anchors */ while ((anchor = RB_MIN(pf_anchor_global, &pf_anchors)) != NULL) { for (i = 0; i < PF_RULESET_MAX; i++) if (pf_begin_rules(&ticket, i, anchor->name) == 0) pf_commit_rules(ticket, i, anchor->name); } /* destroy main ruleset */ pf_remove_if_empty_ruleset(&pf_main_ruleset); /* destroy the pools */ pool_destroy(&pf_pooladdr_pl); pool_destroy(&pf_altq_pl); pool_destroy(&pf_state_pl); pool_destroy(&pf_rule_pl); pool_destroy(&pf_src_tree_pl); /* destroy subsystems */ pf_normalize_destroy(); pf_osfp_destroy(); pfr_destroy(); pfi_destroy(); } #endif int pfopen(dev_t dev, int flags, int fmt, struct proc *p) { if (minor(dev) >= 1) return (ENXIO); return (0); } int pfclose(dev_t dev, int flags, int fmt, struct proc *p) { if (minor(dev) >= 1) return (ENXIO); return (0); } struct pf_pool * pf_get_pool(char *anchor, u_int32_t ticket, u_int8_t rule_action, u_int32_t rule_number, u_int8_t r_last, u_int8_t active, u_int8_t check_ticket) { struct pf_ruleset *ruleset; struct pf_rule *rule; int rs_num; ruleset = pf_find_ruleset(anchor); if (ruleset == NULL) return (NULL); rs_num = pf_get_ruleset_number(rule_action); if (rs_num >= PF_RULESET_MAX) return (NULL); if (active) { if (check_ticket && ticket != ruleset->rules[rs_num].active.ticket) return (NULL); if (r_last) rule = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, pf_rulequeue); else rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); } else { if (check_ticket && ticket != ruleset->rules[rs_num].inactive.ticket) return (NULL); if (r_last) rule = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, pf_rulequeue); else rule = TAILQ_FIRST(ruleset->rules[rs_num].inactive.ptr); } if (!r_last) { while ((rule != NULL) && (rule->nr != rule_number)) rule = TAILQ_NEXT(rule, entries); } if (rule == NULL) return (NULL); return (&rule->rpool); } int pf_get_ruleset_number(u_int8_t action) { switch (action) { case PF_SCRUB: return (PF_RULESET_SCRUB); break; case PF_PASS: case PF_DROP: return (PF_RULESET_FILTER); break; case PF_NAT: case PF_NONAT: return (PF_RULESET_NAT); break; case PF_BINAT: case PF_NOBINAT: return (PF_RULESET_BINAT); break; case PF_RDR: case PF_NORDR: return (PF_RULESET_RDR); break; default: return (PF_RULESET_MAX); break; } } void pf_init_ruleset(struct pf_ruleset *ruleset) { int i; memset(ruleset, 0, sizeof(struct pf_ruleset)); for (i = 0; i < PF_RULESET_MAX; i++) { TAILQ_INIT(&ruleset->rules[i].queues[0]); TAILQ_INIT(&ruleset->rules[i].queues[1]); ruleset->rules[i].active.ptr = &ruleset->rules[i].queues[0]; ruleset->rules[i].inactive.ptr = &ruleset->rules[i].queues[1]; } } struct pf_anchor * pf_find_anchor(const char *path) { static struct pf_anchor key; memset(&key, 0, sizeof(key)); strlcpy(key.path, path, sizeof(key.path)); return (RB_FIND(pf_anchor_global, &pf_anchors, &key)); } struct pf_ruleset * pf_find_ruleset(const char *path) { struct pf_anchor *anchor; while (*path == '/') path++; if (!*path) return (&pf_main_ruleset); anchor = pf_find_anchor(path); if (anchor == NULL) return (NULL); else return (&anchor->ruleset); } struct pf_ruleset * pf_find_or_create_ruleset(const char *path) { static char p[MAXPATHLEN]; char *q = NULL /* XXX gcc */, *r; struct pf_ruleset *ruleset; struct pf_anchor *anchor = NULL /* XXX gcc */, *dup, *parent = NULL; while (*path == '/') path++; ruleset = pf_find_ruleset(path); if (ruleset != NULL) return (ruleset); strlcpy(p, path, sizeof(p)); while (parent == NULL && (q = strrchr(p, '/')) != NULL) { *q = 0; if ((ruleset = pf_find_ruleset(p)) != NULL) { parent = ruleset->anchor; break; } } if (q == NULL) q = p; else q++; strlcpy(p, path, sizeof(p)); if (!*q) return (NULL); while ((r = strchr(q, '/')) != NULL || *q) { if (r != NULL) *r = 0; if (!*q || strlen(q) >= PF_ANCHOR_NAME_SIZE || (parent != NULL && strlen(parent->path) >= MAXPATHLEN - PF_ANCHOR_NAME_SIZE - 1)) return (NULL); anchor = (struct pf_anchor *)malloc(sizeof(*anchor), M_TEMP, M_NOWAIT); if (anchor == NULL) return (NULL); memset(anchor, 0, sizeof(*anchor)); RB_INIT(&anchor->children); strlcpy(anchor->name, q, sizeof(anchor->name)); if (parent != NULL) { strlcpy(anchor->path, parent->path, sizeof(anchor->path)); strlcat(anchor->path, "/", sizeof(anchor->path)); } strlcat(anchor->path, anchor->name, sizeof(anchor->path)); if ((dup = RB_INSERT(pf_anchor_global, &pf_anchors, anchor)) != NULL) { printf("pf_find_or_create_ruleset: RB_INSERT1 " "'%s' '%s' collides with '%s' '%s'\n", anchor->path, anchor->name, dup->path, dup->name); free(anchor, M_TEMP); return (NULL); } if (parent != NULL) { anchor->parent = parent; if ((dup = RB_INSERT(pf_anchor_node, &parent->children, anchor)) != NULL) { printf("pf_find_or_create_ruleset: " "RB_INSERT2 '%s' '%s' collides with " "'%s' '%s'\n", anchor->path, anchor->name, dup->path, dup->name); RB_REMOVE(pf_anchor_global, &pf_anchors, anchor); free(anchor, M_TEMP); return (NULL); } } pf_init_ruleset(&anchor->ruleset); anchor->ruleset.anchor = anchor; parent = anchor; if (r != NULL) q = r + 1; else *q = 0; } return (&anchor->ruleset); } void pf_remove_if_empty_ruleset(struct pf_ruleset *ruleset) { struct pf_anchor *parent; int i; while (ruleset != NULL) { if (ruleset == &pf_main_ruleset || ruleset->anchor == NULL || !RB_EMPTY(&ruleset->anchor->children) || ruleset->anchor->refcnt > 0 || ruleset->tables > 0 || ruleset->topen) return; for (i = 0; i < PF_RULESET_MAX; ++i) if (!TAILQ_EMPTY(ruleset->rules[i].active.ptr) || !TAILQ_EMPTY(ruleset->rules[i].inactive.ptr) || ruleset->rules[i].inactive.open) return; RB_REMOVE(pf_anchor_global, &pf_anchors, ruleset->anchor); if ((parent = ruleset->anchor->parent) != NULL) RB_REMOVE(pf_anchor_node, &parent->children, ruleset->anchor); free(ruleset->anchor, M_TEMP); if (parent == NULL) return; ruleset = &parent->ruleset; } } int pf_anchor_setup(struct pf_rule *r, const struct pf_ruleset *s, const char *name) { static char *p, path[MAXPATHLEN]; struct pf_ruleset *ruleset; r->anchor = NULL; r->anchor_relative = 0; r->anchor_wildcard = 0; if (!name[0]) return (0); if (name[0] == '/') strlcpy(path, name + 1, sizeof(path)); else { /* relative path */ r->anchor_relative = 1; if (s->anchor == NULL || !s->anchor->path[0]) path[0] = 0; else strlcpy(path, s->anchor->path, sizeof(path)); while (name[0] == '.' && name[1] == '.' && name[2] == '/') { if (!path[0]) { printf("pf_anchor_setup: .. beyond root\n"); return (1); } if ((p = strrchr(path, '/')) != NULL) *p = 0; else path[0] = 0; r->anchor_relative++; name += 3; } if (path[0]) strlcat(path, "/", sizeof(path)); strlcat(path, name, sizeof(path)); } if ((p = strrchr(path, '/')) != NULL && !strcmp(p, "/*")) { r->anchor_wildcard = 1; *p = 0; } ruleset = pf_find_or_create_ruleset(path); if (ruleset == NULL || ruleset->anchor == NULL) { printf("pf_anchor_setup: ruleset\n"); return (1); } r->anchor = ruleset->anchor; r->anchor->refcnt++; return (0); } int pf_anchor_copyout(const struct pf_ruleset *rs, const struct pf_rule *r, struct pfioc_rule *pr) { pr->anchor_call[0] = 0; if (r->anchor == NULL) return (0); if (!r->anchor_relative) { strlcpy(pr->anchor_call, "/", sizeof(pr->anchor_call)); strlcat(pr->anchor_call, r->anchor->path, sizeof(pr->anchor_call)); } else { char a[MAXPATHLEN], b[MAXPATHLEN], *p; int i; if (rs->anchor == NULL) a[0] = 0; else strlcpy(a, rs->anchor->path, sizeof(a)); strlcpy(b, r->anchor->path, sizeof(b)); for (i = 1; i < r->anchor_relative; ++i) { if ((p = strrchr(a, '/')) == NULL) p = a; *p = 0; strlcat(pr->anchor_call, "../", sizeof(pr->anchor_call)); } if (strncmp(a, b, strlen(a))) { printf("pf_anchor_copyout: '%s' '%s'\n", a, b); return (1); } if (strlen(b) > strlen(a)) strlcat(pr->anchor_call, b + (a[0] ? strlen(a) + 1 : 0), sizeof(pr->anchor_call)); } if (r->anchor_wildcard) strlcat(pr->anchor_call, pr->anchor_call[0] ? "/*" : "*", sizeof(pr->anchor_call)); return (0); } void pf_anchor_remove(struct pf_rule *r) { if (r->anchor == NULL) return; if (r->anchor->refcnt <= 0) { printf("pf_anchor_remove: broken refcount"); r->anchor = NULL; return; } if (!--r->anchor->refcnt) pf_remove_if_empty_ruleset(&r->anchor->ruleset); r->anchor = NULL; } void pf_mv_pool(struct pf_palist *poola, struct pf_palist *poolb) { struct pf_pooladdr *mv_pool_pa; while ((mv_pool_pa = TAILQ_FIRST(poola)) != NULL) { TAILQ_REMOVE(poola, mv_pool_pa, entries); TAILQ_INSERT_TAIL(poolb, mv_pool_pa, entries); } } void pf_empty_pool(struct pf_palist *poola) { struct pf_pooladdr *empty_pool_pa; while ((empty_pool_pa = TAILQ_FIRST(poola)) != NULL) { pfi_dynaddr_remove(&empty_pool_pa->addr); pf_tbladdr_remove(&empty_pool_pa->addr); pfi_detach_rule(empty_pool_pa->kif); TAILQ_REMOVE(poola, empty_pool_pa, entries); pool_put(&pf_pooladdr_pl, empty_pool_pa); } } void pf_rm_rule(struct pf_rulequeue *rulequeue, struct pf_rule *rule) { if (rulequeue != NULL) { if (rule->states <= 0) { /* * XXX - we need to remove the table *before* detaching * the rule to make sure the table code does not delete * the anchor under our feet. */ pf_tbladdr_remove(&rule->src.addr); pf_tbladdr_remove(&rule->dst.addr); } TAILQ_REMOVE(rulequeue, rule, entries); rule->entries.tqe_prev = NULL; rule->nr = -1; } if (rule->states > 0 || rule->src_nodes > 0 || rule->entries.tqe_prev != NULL) return; pf_tag_unref(rule->tag); pf_tag_unref(rule->match_tag); #ifdef ALTQ if (rule->pqid != rule->qid) pf_qid_unref(rule->pqid); pf_qid_unref(rule->qid); #endif pfi_dynaddr_remove(&rule->src.addr); pfi_dynaddr_remove(&rule->dst.addr); if (rulequeue == NULL) { pf_tbladdr_remove(&rule->src.addr); pf_tbladdr_remove(&rule->dst.addr); } pfi_detach_rule(rule->kif); pf_anchor_remove(rule); pf_empty_pool(&rule->rpool.list); pool_put(&pf_rule_pl, rule); } static u_int16_t tagname2tag(struct pf_tags *head, char *tagname) { struct pf_tagname *tag, *p = NULL; u_int16_t new_tagid = 1; TAILQ_FOREACH(tag, head, entries) if (strcmp(tagname, tag->name) == 0) { tag->ref++; return (tag->tag); } /* * to avoid fragmentation, we do a linear search from the beginning * and take the first free slot we find. if there is none or the list * is empty, append a new entry at the end. */ /* new entry */ if (!TAILQ_EMPTY(head)) for (p = TAILQ_FIRST(head); p != NULL && p->tag == new_tagid; p = TAILQ_NEXT(p, entries)) new_tagid = p->tag + 1; if (new_tagid > TAGID_MAX) return (0); /* allocate and fill new struct pf_tagname */ tag = (struct pf_tagname *)malloc(sizeof(struct pf_tagname), M_TEMP, M_NOWAIT); if (tag == NULL) return (0); bzero(tag, sizeof(struct pf_tagname)); strlcpy(tag->name, tagname, sizeof(tag->name)); tag->tag = new_tagid; tag->ref++; if (p != NULL) /* insert new entry before p */ TAILQ_INSERT_BEFORE(p, tag, entries); else /* either list empty or no free slot in between */ TAILQ_INSERT_TAIL(head, tag, entries); return (tag->tag); } static void tag2tagname(struct pf_tags *head, u_int16_t tagid, char *p) { struct pf_tagname *tag; TAILQ_FOREACH(tag, head, entries) if (tag->tag == tagid) { strlcpy(p, tag->name, PF_TAG_NAME_SIZE); return; } } static void tag_unref(struct pf_tags *head, u_int16_t tag) { struct pf_tagname *p, *next; if (tag == 0) return; for (p = TAILQ_FIRST(head); p != NULL; p = next) { next = TAILQ_NEXT(p, entries); if (tag == p->tag) { if (--p->ref == 0) { TAILQ_REMOVE(head, p, entries); free(p, M_TEMP); } break; } } } u_int16_t pf_tagname2tag(char *tagname) { return (tagname2tag(&pf_tags, tagname)); } void pf_tag2tagname(u_int16_t tagid, char *p) { return (tag2tagname(&pf_tags, tagid, p)); } void pf_tag_unref(u_int16_t tag) { return (tag_unref(&pf_tags, tag)); } #ifdef ALTQ u_int32_t pf_qname2qid(char *qname) { return ((u_int32_t)tagname2tag(&pf_qids, qname)); } void pf_qid2qname(u_int32_t qid, char *p) { return (tag2tagname(&pf_qids, (u_int16_t)qid, p)); } void pf_qid_unref(u_int32_t qid) { return (tag_unref(&pf_qids, (u_int16_t)qid)); } int pf_begin_altq(u_int32_t *ticket) { struct pf_altq *altq; int error = 0; /* Purge the old altq list */ while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) { TAILQ_REMOVE(pf_altqs_inactive, altq, entries); if (altq->qname[0] == 0) { /* detach and destroy the discipline */ error = altq_remove(altq); } else pf_qid_unref(altq->qid); pool_put(&pf_altq_pl, altq); } if (error) return (error); *ticket = ++ticket_altqs_inactive; altqs_inactive_open = 1; return (0); } int pf_rollback_altq(u_int32_t ticket) { struct pf_altq *altq; int error = 0; if (!altqs_inactive_open || ticket != ticket_altqs_inactive) return (0); /* Purge the old altq list */ while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) { TAILQ_REMOVE(pf_altqs_inactive, altq, entries); if (altq->qname[0] == 0) { /* detach and destroy the discipline */ error = altq_remove(altq); } else pf_qid_unref(altq->qid); pool_put(&pf_altq_pl, altq); } altqs_inactive_open = 0; return (error); } int pf_commit_altq(u_int32_t ticket) { struct pf_altqqueue *old_altqs; struct pf_altq *altq; int s, err, error = 0; if (!altqs_inactive_open || ticket != ticket_altqs_inactive) return (EBUSY); /* swap altqs, keep the old. */ s = splsoftnet(); old_altqs = pf_altqs_active; pf_altqs_active = pf_altqs_inactive; pf_altqs_inactive = old_altqs; ticket_altqs_active = ticket_altqs_inactive; /* Attach new disciplines */ TAILQ_FOREACH(altq, pf_altqs_active, entries) { if (altq->qname[0] == 0) { /* attach the discipline */ error = altq_pfattach(altq); if (error == 0 && pf_altq_running) error = pf_enable_altq(altq); if (error != 0) { splx(s); return (error); } } } /* Purge the old altq list */ while ((altq = TAILQ_FIRST(pf_altqs_inactive)) != NULL) { TAILQ_REMOVE(pf_altqs_inactive, altq, entries); if (altq->qname[0] == 0) { /* detach and destroy the discipline */ if (pf_altq_running) error = pf_disable_altq(altq); err = altq_pfdetach(altq); if (err != 0 && error == 0) error = err; err = altq_remove(altq); if (err != 0 && error == 0) error = err; } else pf_qid_unref(altq->qid); pool_put(&pf_altq_pl, altq); } splx(s); altqs_inactive_open = 0; return (error); } int pf_enable_altq(struct pf_altq *altq) { struct ifnet *ifp; struct tb_profile tb; int s, error = 0; if ((ifp = ifunit(altq->ifname)) == NULL) return (EINVAL); if (ifp->if_snd.altq_type != ALTQT_NONE) error = altq_enable(&ifp->if_snd); /* set tokenbucket regulator */ if (error == 0 && ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { tb.rate = altq->ifbandwidth; tb.depth = altq->tbrsize; s = splimp(); error = tbr_set(&ifp->if_snd, &tb); splx(s); } return (error); } int pf_disable_altq(struct pf_altq *altq) { struct ifnet *ifp; struct tb_profile tb; int s, error; if ((ifp = ifunit(altq->ifname)) == NULL) return (EINVAL); /* * when the discipline is no longer referenced, it was overridden * by a new one. if so, just return. */ if (altq->altq_disc != ifp->if_snd.altq_disc) return (0); error = altq_disable(&ifp->if_snd); if (error == 0) { /* clear tokenbucket regulator */ tb.rate = 0; s = splimp(); error = tbr_set(&ifp->if_snd, &tb); splx(s); } return (error); } #endif /* ALTQ */ int pf_begin_rules(u_int32_t *ticket, int rs_num, const char *anchor) { struct pf_ruleset *rs; struct pf_rule *rule; if (rs_num < 0 || rs_num >= PF_RULESET_MAX) return (EINVAL); rs = pf_find_or_create_ruleset(anchor); if (rs == NULL) return (EINVAL); while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) pf_rm_rule(rs->rules[rs_num].inactive.ptr, rule); *ticket = ++rs->rules[rs_num].inactive.ticket; rs->rules[rs_num].inactive.open = 1; return (0); } int pf_rollback_rules(u_int32_t ticket, int rs_num, char *anchor) { struct pf_ruleset *rs; struct pf_rule *rule; if (rs_num < 0 || rs_num >= PF_RULESET_MAX) return (EINVAL); rs = pf_find_ruleset(anchor); if (rs == NULL || !rs->rules[rs_num].inactive.open || rs->rules[rs_num].inactive.ticket != ticket) return (0); while ((rule = TAILQ_FIRST(rs->rules[rs_num].inactive.ptr)) != NULL) pf_rm_rule(rs->rules[rs_num].inactive.ptr, rule); rs->rules[rs_num].inactive.open = 0; return (0); } int pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor) { struct pf_ruleset *rs; struct pf_rule *rule; struct pf_rulequeue *old_rules; int s; if (rs_num < 0 || rs_num >= PF_RULESET_MAX) return (EINVAL); rs = pf_find_ruleset(anchor); if (rs == NULL || !rs->rules[rs_num].inactive.open || ticket != rs->rules[rs_num].inactive.ticket) return (EBUSY); /* Swap rules, keep the old. */ s = splsoftnet(); old_rules = rs->rules[rs_num].active.ptr; rs->rules[rs_num].active.ptr = rs->rules[rs_num].inactive.ptr; rs->rules[rs_num].inactive.ptr = old_rules; rs->rules[rs_num].active.ticket = rs->rules[rs_num].inactive.ticket; pf_calc_skip_steps(rs->rules[rs_num].active.ptr); /* Purge the old rule list. */ while ((rule = TAILQ_FIRST(old_rules)) != NULL) pf_rm_rule(old_rules, rule); rs->rules[rs_num].inactive.open = 0; pf_remove_if_empty_ruleset(rs); splx(s); return (0); } int pfioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p) { struct pf_pooladdr *pa = NULL; struct pf_pool *pool = NULL; int s; int error = 0; /* XXX keep in sync with switch() below */ if (securelevel > 1) switch (cmd) { case DIOCGETRULES: case DIOCGETRULE: case DIOCGETADDRS: case DIOCGETADDR: case DIOCGETSTATE: case DIOCSETSTATUSIF: case DIOCGETSTATUS: case DIOCCLRSTATUS: case DIOCNATLOOK: case DIOCSETDEBUG: case DIOCGETSTATES: case DIOCGETTIMEOUT: case DIOCCLRRULECTRS: case DIOCGETLIMIT: case DIOCGETALTQS: case DIOCGETALTQ: case DIOCGETQSTATS: case DIOCGETRULESETS: case DIOCGETRULESET: case DIOCRGETTABLES: case DIOCRGETTSTATS: case DIOCRCLRTSTATS: case DIOCRCLRADDRS: case DIOCRADDADDRS: case DIOCRDELADDRS: case DIOCRSETADDRS: case DIOCRGETADDRS: case DIOCRGETASTATS: case DIOCRCLRASTATS: case DIOCRTSTADDRS: case DIOCOSFPGET: case DIOCGETSRCNODES: case DIOCCLRSRCNODES: case DIOCIGETIFACES: case DIOCICLRISTATS: break; case DIOCRCLRTABLES: case DIOCRADDTABLES: case DIOCRDELTABLES: case DIOCRSETTFLAGS: if (((struct pfioc_table *)addr)->pfrio_flags & PFR_FLAG_DUMMY) break; /* dummy operation ok */ return (EPERM); default: return (EPERM); } if (!(flags & FWRITE)) switch (cmd) { case DIOCGETRULES: case DIOCGETRULE: case DIOCGETADDRS: case DIOCGETADDR: case DIOCGETSTATE: case DIOCGETSTATUS: case DIOCGETSTATES: case DIOCGETTIMEOUT: case DIOCGETLIMIT: case DIOCGETALTQS: case DIOCGETALTQ: case DIOCGETQSTATS: case DIOCGETRULESETS: case DIOCGETRULESET: case DIOCRGETTABLES: case DIOCRGETTSTATS: case DIOCRGETADDRS: case DIOCRGETASTATS: case DIOCRTSTADDRS: case DIOCOSFPGET: case DIOCGETSRCNODES: case DIOCIGETIFACES: break; case DIOCRCLRTABLES: case DIOCRADDTABLES: case DIOCRDELTABLES: case DIOCRCLRTSTATS: case DIOCRCLRADDRS: case DIOCRADDADDRS: case DIOCRDELADDRS: case DIOCRSETADDRS: case DIOCRSETTFLAGS: if (((struct pfioc_table *)addr)->pfrio_flags & PFR_FLAG_DUMMY) break; /* dummy operation ok */ return (EACCES); default: return (EACCES); } s = splsoftnet(); switch (cmd) { case DIOCSTART: if (pf_status.running) error = EEXIST; else { #ifdef __NetBSD__ error = pf_pfil_attach(); if (error) break; #endif pf_status.running = 1; pf_status.since = time_second; if (pf_status.stateid == 0) { pf_status.stateid = time_second; pf_status.stateid = pf_status.stateid << 32; } DPFPRINTF(PF_DEBUG_MISC, ("pf: started\n")); } break; case DIOCSTOP: if (!pf_status.running) error = ENOENT; else { #ifdef __NetBSD__ error = pf_pfil_detach(); if (error) break; #endif pf_status.running = 0; pf_status.since = time_second; DPFPRINTF(PF_DEBUG_MISC, ("pf: stopped\n")); } break; case DIOCADDRULE: { struct pfioc_rule *pr = (struct pfioc_rule *)addr; struct pf_ruleset *ruleset; struct pf_rule *rule, *tail; struct pf_pooladdr *pa; int rs_num; pr->anchor[sizeof(pr->anchor) - 1] = 0; ruleset = pf_find_ruleset(pr->anchor); if (ruleset == NULL) { error = EINVAL; break; } rs_num = pf_get_ruleset_number(pr->rule.action); if (rs_num >= PF_RULESET_MAX) { error = EINVAL; break; } if (pr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { error = EINVAL; break; } if (pr->ticket != ruleset->rules[rs_num].inactive.ticket) { error = EBUSY; break; } if (pr->pool_ticket != ticket_pabuf) { error = EBUSY; break; } rule = pool_get(&pf_rule_pl, PR_NOWAIT); if (rule == NULL) { error = ENOMEM; break; } bcopy(&pr->rule, rule, sizeof(struct pf_rule)); rule->anchor = NULL; rule->kif = NULL; TAILQ_INIT(&rule->rpool.list); /* initialize refcounting */ rule->states = 0; rule->src_nodes = 0; rule->entries.tqe_prev = NULL; #ifndef INET if (rule->af == AF_INET) { pool_put(&pf_rule_pl, rule); error = EAFNOSUPPORT; break; } #endif /* INET */ #ifndef INET6 if (rule->af == AF_INET6) { pool_put(&pf_rule_pl, rule); error = EAFNOSUPPORT; break; } #endif /* INET6 */ tail = TAILQ_LAST(ruleset->rules[rs_num].inactive.ptr, pf_rulequeue); if (tail) rule->nr = tail->nr + 1; else rule->nr = 0; if (rule->ifname[0]) { rule->kif = pfi_attach_rule(rule->ifname); if (rule->kif == NULL) { pool_put(&pf_rule_pl, rule); error = EINVAL; break; } } #ifdef ALTQ /* set queue IDs */ if (rule->qname[0] != 0) { if ((rule->qid = pf_qname2qid(rule->qname)) == 0) error = EBUSY; else if (rule->pqname[0] != 0) { if ((rule->pqid = pf_qname2qid(rule->pqname)) == 0) error = EBUSY; } else rule->pqid = rule->qid; } #endif if (rule->tagname[0]) if ((rule->tag = pf_tagname2tag(rule->tagname)) == 0) error = EBUSY; if (rule->match_tagname[0]) if ((rule->match_tag = pf_tagname2tag(rule->match_tagname)) == 0) error = EBUSY; if (rule->rt && !rule->direction) error = EINVAL; if (pfi_dynaddr_setup(&rule->src.addr, rule->af)) error = EINVAL; if (pfi_dynaddr_setup(&rule->dst.addr, rule->af)) error = EINVAL; if (pf_tbladdr_setup(ruleset, &rule->src.addr)) error = EINVAL; if (pf_tbladdr_setup(ruleset, &rule->dst.addr)) error = EINVAL; if (pf_anchor_setup(rule, ruleset, pr->anchor_call)) error = EINVAL; TAILQ_FOREACH(pa, &pf_pabuf, entries) if (pf_tbladdr_setup(ruleset, &pa->addr)) error = EINVAL; pf_mv_pool(&pf_pabuf, &rule->rpool.list); if (((((rule->action == PF_NAT) || (rule->action == PF_RDR) || (rule->action == PF_BINAT)) && rule->anchor == NULL) || (rule->rt > PF_FASTROUTE)) && (TAILQ_FIRST(&rule->rpool.list) == NULL)) error = EINVAL; if (error) { pf_rm_rule(NULL, rule); break; } rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list); rule->evaluations = rule->packets = rule->bytes = 0; TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr, rule, entries); break; } case DIOCGETRULES: { struct pfioc_rule *pr = (struct pfioc_rule *)addr; struct pf_ruleset *ruleset; struct pf_rule *tail; int rs_num; pr->anchor[sizeof(pr->anchor) - 1] = 0; ruleset = pf_find_ruleset(pr->anchor); if (ruleset == NULL) { error = EINVAL; break; } rs_num = pf_get_ruleset_number(pr->rule.action); if (rs_num >= PF_RULESET_MAX) { error = EINVAL; break; } tail = TAILQ_LAST(ruleset->rules[rs_num].active.ptr, pf_rulequeue); if (tail) pr->nr = tail->nr + 1; else pr->nr = 0; pr->ticket = ruleset->rules[rs_num].active.ticket; break; } case DIOCGETRULE: { struct pfioc_rule *pr = (struct pfioc_rule *)addr; struct pf_ruleset *ruleset; struct pf_rule *rule; int rs_num, i; pr->anchor[sizeof(pr->anchor) - 1] = 0; ruleset = pf_find_ruleset(pr->anchor); if (ruleset == NULL) { error = EINVAL; break; } rs_num = pf_get_ruleset_number(pr->rule.action); if (rs_num >= PF_RULESET_MAX) { error = EINVAL; break; } if (pr->ticket != ruleset->rules[rs_num].active.ticket) { error = EBUSY; break; } rule = TAILQ_FIRST(ruleset->rules[rs_num].active.ptr); while ((rule != NULL) && (rule->nr != pr->nr)) rule = TAILQ_NEXT(rule, entries); if (rule == NULL) { error = EBUSY; break; } bcopy(rule, &pr->rule, sizeof(struct pf_rule)); if (pf_anchor_copyout(ruleset, rule, pr)) { error = EBUSY; break; } pfi_dynaddr_copyout(&pr->rule.src.addr); pfi_dynaddr_copyout(&pr->rule.dst.addr); pf_tbladdr_copyout(&pr->rule.src.addr); pf_tbladdr_copyout(&pr->rule.dst.addr); for (i = 0; i < PF_SKIP_COUNT; ++i) if (rule->skip[i].ptr == NULL) pr->rule.skip[i].nr = -1; else pr->rule.skip[i].nr = rule->skip[i].ptr->nr; break; } case DIOCCHANGERULE: { struct pfioc_rule *pcr = (struct pfioc_rule *)addr; struct pf_ruleset *ruleset; struct pf_rule *oldrule = NULL, *newrule = NULL; u_int32_t nr = 0; int rs_num; if (!(pcr->action == PF_CHANGE_REMOVE || pcr->action == PF_CHANGE_GET_TICKET) && pcr->pool_ticket != ticket_pabuf) { error = EBUSY; break; } if (pcr->action < PF_CHANGE_ADD_HEAD || pcr->action > PF_CHANGE_GET_TICKET) { error = EINVAL; break; } ruleset = pf_find_ruleset(pcr->anchor); if (ruleset == NULL) { error = EINVAL; break; } rs_num = pf_get_ruleset_number(pcr->rule.action); if (rs_num >= PF_RULESET_MAX) { error = EINVAL; break; } if (pcr->action == PF_CHANGE_GET_TICKET) { pcr->ticket = ++ruleset->rules[rs_num].active.ticket; break; } else { if (pcr->ticket != ruleset->rules[rs_num].active.ticket) { error = EINVAL; break; } if (pcr->rule.return_icmp >> 8 > ICMP_MAXTYPE) { error = EINVAL; break; } } if (pcr->action != PF_CHANGE_REMOVE) { newrule = pool_get(&pf_rule_pl, PR_NOWAIT); if (newrule == NULL) { error = ENOMEM; break; } bcopy(&pcr->rule, newrule, sizeof(struct pf_rule)); TAILQ_INIT(&newrule->rpool.list); /* initialize refcounting */ newrule->states = 0; newrule->entries.tqe_prev = NULL; #ifndef INET if (newrule->af == AF_INET) { pool_put(&pf_rule_pl, newrule); error = EAFNOSUPPORT; break; } #endif /* INET */ #ifndef INET6 if (newrule->af == AF_INET6) { pool_put(&pf_rule_pl, newrule); error = EAFNOSUPPORT; break; } #endif /* INET6 */ if (newrule->ifname[0]) { newrule->kif = pfi_attach_rule(newrule->ifname); if (newrule->kif == NULL) { pool_put(&pf_rule_pl, newrule); error = EINVAL; break; } } else newrule->kif = NULL; #ifdef ALTQ /* set queue IDs */ if (newrule->qname[0] != 0) { if ((newrule->qid = pf_qname2qid(newrule->qname)) == 0) error = EBUSY; else if (newrule->pqname[0] != 0) { if ((newrule->pqid = pf_qname2qid(newrule->pqname)) == 0) error = EBUSY; } else newrule->pqid = newrule->qid; } #endif /* ALTQ */ if (newrule->tagname[0]) if ((newrule->tag = pf_tagname2tag(newrule->tagname)) == 0) error = EBUSY; if (newrule->match_tagname[0]) if ((newrule->match_tag = pf_tagname2tag( newrule->match_tagname)) == 0) error = EBUSY; if (newrule->rt && !newrule->direction) error = EINVAL; if (pfi_dynaddr_setup(&newrule->src.addr, newrule->af)) error = EINVAL; if (pfi_dynaddr_setup(&newrule->dst.addr, newrule->af)) error = EINVAL; if (pf_tbladdr_setup(ruleset, &newrule->src.addr)) error = EINVAL; if (pf_tbladdr_setup(ruleset, &newrule->dst.addr)) error = EINVAL; if (pf_anchor_setup(newrule, ruleset, pcr->anchor_call)) error = EINVAL; pf_mv_pool(&pf_pabuf, &newrule->rpool.list); if (((((newrule->action == PF_NAT) || (newrule->action == PF_RDR) || (newrule->action == PF_BINAT) || (newrule->rt > PF_FASTROUTE)) && !pcr->anchor[0])) && (TAILQ_FIRST(&newrule->rpool.list) == NULL)) error = EINVAL; if (error) { pf_rm_rule(NULL, newrule); break; } newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list); newrule->evaluations = newrule->packets = 0; newrule->bytes = 0; } pf_empty_pool(&pf_pabuf); if (pcr->action == PF_CHANGE_ADD_HEAD) oldrule = TAILQ_FIRST( ruleset->rules[rs_num].active.ptr); else if (pcr->action == PF_CHANGE_ADD_TAIL) oldrule = TAILQ_LAST( ruleset->rules[rs_num].active.ptr, pf_rulequeue); else { oldrule = TAILQ_FIRST( ruleset->rules[rs_num].active.ptr); while ((oldrule != NULL) && (oldrule->nr != pcr->nr)) oldrule = TAILQ_NEXT(oldrule, entries); if (oldrule == NULL) { if (newrule != NULL) pf_rm_rule(NULL, newrule); error = EINVAL; break; } } if (pcr->action == PF_CHANGE_REMOVE) pf_rm_rule(ruleset->rules[rs_num].active.ptr, oldrule); else { if (oldrule == NULL) TAILQ_INSERT_TAIL( ruleset->rules[rs_num].active.ptr, newrule, entries); else if (pcr->action == PF_CHANGE_ADD_HEAD || pcr->action == PF_CHANGE_ADD_BEFORE) TAILQ_INSERT_BEFORE(oldrule, newrule, entries); else TAILQ_INSERT_AFTER( ruleset->rules[rs_num].active.ptr, oldrule, newrule, entries); } nr = 0; TAILQ_FOREACH(oldrule, ruleset->rules[rs_num].active.ptr, entries) oldrule->nr = nr++; ruleset->rules[rs_num].active.ticket++; pf_calc_skip_steps(ruleset->rules[rs_num].active.ptr); pf_remove_if_empty_ruleset(ruleset); break; } case DIOCCLRSTATES: { struct pf_state *state; struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; int killed = 0; RB_FOREACH(state, pf_state_tree_id, &tree_id) { if (!psk->psk_ifname[0] || !strcmp(psk->psk_ifname, state->u.s.kif->pfik_name)) { state->timeout = PFTM_PURGE; #if NPFSYNC /* don't send out individual delete messages */ state->sync_flags = PFSTATE_NOSYNC; #endif killed++; } } pf_purge_expired_states(); pf_status.states = 0; psk->psk_af = killed; #if NPFSYNC pfsync_clear_states(pf_status.hostid, psk->psk_ifname); #endif break; } case DIOCKILLSTATES: { struct pf_state *state; struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; int killed = 0; RB_FOREACH(state, pf_state_tree_id, &tree_id) { if ((!psk->psk_af || state->af == psk->psk_af) && (!psk->psk_proto || psk->psk_proto == state->proto) && PF_MATCHA(psk->psk_src.neg, &psk->psk_src.addr.v.a.addr, &psk->psk_src.addr.v.a.mask, &state->lan.addr, state->af) && PF_MATCHA(psk->psk_dst.neg, &psk->psk_dst.addr.v.a.addr, &psk->psk_dst.addr.v.a.mask, &state->ext.addr, state->af) && (psk->psk_src.port_op == 0 || pf_match_port(psk->psk_src.port_op, psk->psk_src.port[0], psk->psk_src.port[1], state->lan.port)) && (psk->psk_dst.port_op == 0 || pf_match_port(psk->psk_dst.port_op, psk->psk_dst.port[0], psk->psk_dst.port[1], state->ext.port)) && (!psk->psk_ifname[0] || !strcmp(psk->psk_ifname, state->u.s.kif->pfik_name))) { state->timeout = PFTM_PURGE; killed++; } } pf_purge_expired_states(); psk->psk_af = killed; break; } case DIOCADDSTATE: { struct pfioc_state *ps = (struct pfioc_state *)addr; struct pf_state *state; struct pfi_kif *kif; if (ps->state.timeout >= PFTM_MAX && ps->state.timeout != PFTM_UNTIL_PACKET) { error = EINVAL; break; } state = pool_get(&pf_state_pl, PR_NOWAIT); if (state == NULL) { error = ENOMEM; break; } kif = pfi_lookup_create(ps->state.u.ifname); if (kif == NULL) { pool_put(&pf_state_pl, state); error = ENOENT; break; } bcopy(&ps->state, state, sizeof(struct pf_state)); bzero(&state->u, sizeof(state->u)); state->rule.ptr = &pf_default_rule; state->nat_rule.ptr = NULL; state->anchor.ptr = NULL; state->rt_kif = NULL; state->creation = time_second; state->pfsync_time = 0; state->packets[0] = state->packets[1] = 0; state->bytes[0] = state->bytes[1] = 0; if (pf_insert_state(kif, state)) { pfi_maybe_destroy(kif); pool_put(&pf_state_pl, state); error = ENOMEM; } break; } case DIOCGETSTATE: { struct pfioc_state *ps = (struct pfioc_state *)addr; struct pf_state *state; u_int32_t nr; nr = 0; RB_FOREACH(state, pf_state_tree_id, &tree_id) { if (nr >= ps->nr) break; nr++; } if (state == NULL) { error = EBUSY; break; } bcopy(state, &ps->state, sizeof(struct pf_state)); ps->state.rule.nr = state->rule.ptr->nr; ps->state.nat_rule.nr = (state->nat_rule.ptr == NULL) ? -1 : state->nat_rule.ptr->nr; ps->state.anchor.nr = (state->anchor.ptr == NULL) ? -1 : state->anchor.ptr->nr; ps->state.expire = pf_state_expires(state); if (ps->state.expire > time_second) ps->state.expire -= time_second; else ps->state.expire = 0; break; } case DIOCGETSTATES: { struct pfioc_states *ps = (struct pfioc_states *)addr; struct pf_state *state; struct pf_state *p, pstore; struct pfi_kif *kif; u_int32_t nr = 0; int space = ps->ps_len; if (space == 0) { TAILQ_FOREACH(kif, &pfi_statehead, pfik_w_states) nr += kif->pfik_states; ps->ps_len = sizeof(struct pf_state) * nr; break; } p = ps->ps_states; TAILQ_FOREACH(kif, &pfi_statehead, pfik_w_states) RB_FOREACH(state, pf_state_tree_ext_gwy, &kif->pfik_ext_gwy) { int secs = time_second; if ((nr+1) * sizeof(*p) > (unsigned)ps->ps_len) break; bcopy(state, &pstore, sizeof(pstore)); strlcpy(pstore.u.ifname, kif->pfik_name, sizeof(pstore.u.ifname)); pstore.rule.nr = state->rule.ptr->nr; pstore.nat_rule.nr = (state->nat_rule.ptr == NULL) ? -1 : state->nat_rule.ptr->nr; pstore.anchor.nr = (state->anchor.ptr == NULL) ? -1 : state->anchor.ptr->nr; pstore.creation = secs - pstore.creation; pstore.expire = pf_state_expires(state); if (pstore.expire > secs) pstore.expire -= secs; else pstore.expire = 0; error = copyout(&pstore, p, sizeof(*p)); if (error) goto fail; p++; nr++; } ps->ps_len = sizeof(struct pf_state) * nr; break; } case DIOCGETSTATUS: { struct pf_status *s = (struct pf_status *)addr; bcopy(&pf_status, s, sizeof(struct pf_status)); pfi_fill_oldstatus(s); break; } case DIOCSETSTATUSIF: { struct pfioc_if *pi = (struct pfioc_if *)addr; if (pi->ifname[0] == 0) { bzero(pf_status.ifname, IFNAMSIZ); break; } if (ifunit(pi->ifname) == NULL) { error = EINVAL; break; } strlcpy(pf_status.ifname, pi->ifname, IFNAMSIZ); break; } case DIOCCLRSTATUS: { bzero(pf_status.counters, sizeof(pf_status.counters)); bzero(pf_status.fcounters, sizeof(pf_status.fcounters)); bzero(pf_status.scounters, sizeof(pf_status.scounters)); if (*pf_status.ifname) pfi_clr_istats(pf_status.ifname, NULL, PFI_FLAG_INSTANCE); break; } case DIOCNATLOOK: { struct pfioc_natlook *pnl = (struct pfioc_natlook *)addr; struct pf_state *state; struct pf_state key; int m = 0, direction = pnl->direction; key.af = pnl->af; key.proto = pnl->proto; if (!pnl->proto || PF_AZERO(&pnl->saddr, pnl->af) || PF_AZERO(&pnl->daddr, pnl->af) || !pnl->dport || !pnl->sport) error = EINVAL; else { /* * userland gives us source and dest of connection, * reverse the lookup so we ask for what happens with * the return traffic, enabling us to find it in the * state tree. */ if (direction == PF_IN) { PF_ACPY(&key.ext.addr, &pnl->daddr, pnl->af); key.ext.port = pnl->dport; PF_ACPY(&key.gwy.addr, &pnl->saddr, pnl->af); key.gwy.port = pnl->sport; state = pf_find_state_all(&key, PF_EXT_GWY, &m); } else { PF_ACPY(&key.lan.addr, &pnl->daddr, pnl->af); key.lan.port = pnl->dport; PF_ACPY(&key.ext.addr, &pnl->saddr, pnl->af); key.ext.port = pnl->sport; state = pf_find_state_all(&key, PF_LAN_EXT, &m); } if (m > 1) error = E2BIG; /* more than one state */ else if (state != NULL) { if (direction == PF_IN) { PF_ACPY(&pnl->rsaddr, &state->lan.addr, state->af); pnl->rsport = state->lan.port; PF_ACPY(&pnl->rdaddr, &pnl->daddr, pnl->af); pnl->rdport = pnl->dport; } else { PF_ACPY(&pnl->rdaddr, &state->gwy.addr, state->af); pnl->rdport = state->gwy.port; PF_ACPY(&pnl->rsaddr, &pnl->saddr, pnl->af); pnl->rsport = pnl->sport; } } else error = ENOENT; } break; } case DIOCSETTIMEOUT: { struct pfioc_tm *pt = (struct pfioc_tm *)addr; int old; if (pt->timeout < 0 || pt->timeout >= PFTM_MAX || pt->seconds < 0) { error = EINVAL; goto fail; } old = pf_default_rule.timeout[pt->timeout]; pf_default_rule.timeout[pt->timeout] = pt->seconds; pt->seconds = old; break; } case DIOCGETTIMEOUT: { struct pfioc_tm *pt = (struct pfioc_tm *)addr; if (pt->timeout < 0 || pt->timeout >= PFTM_MAX) { error = EINVAL; goto fail; } pt->seconds = pf_default_rule.timeout[pt->timeout]; break; } case DIOCGETLIMIT: { struct pfioc_limit *pl = (struct pfioc_limit *)addr; if (pl->index < 0 || pl->index >= PF_LIMIT_MAX) { error = EINVAL; goto fail; } pl->limit = pf_pool_limits[pl->index].limit; break; } case DIOCSETLIMIT: { struct pfioc_limit *pl = (struct pfioc_limit *)addr; int old_limit; if (pl->index < 0 || pl->index >= PF_LIMIT_MAX || pf_pool_limits[pl->index].pp == NULL) { error = EINVAL; goto fail; } #ifdef __OpenBSD__ if (pool_sethardlimit(pf_pool_limits[pl->index].pp, pl->limit, NULL, 0) != 0) { error = EBUSY; goto fail; } #else pool_sethardlimit(pf_pool_limits[pl->index].pp, pl->limit, NULL, 0); #endif old_limit = pf_pool_limits[pl->index].limit; pf_pool_limits[pl->index].limit = pl->limit; pl->limit = old_limit; break; } case DIOCSETDEBUG: { u_int32_t *level = (u_int32_t *)addr; pf_status.debug = *level; break; } case DIOCCLRRULECTRS: { struct pf_ruleset *ruleset = &pf_main_ruleset; struct pf_rule *rule; TAILQ_FOREACH(rule, ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) rule->evaluations = rule->packets = rule->bytes = 0; break; } #ifdef ALTQ case DIOCSTARTALTQ: { struct pf_altq *altq; /* enable all altq interfaces on active list */ TAILQ_FOREACH(altq, pf_altqs_active, entries) { if (altq->qname[0] == 0) { error = pf_enable_altq(altq); if (error != 0) break; } } if (error == 0) pf_altq_running = 1; DPFPRINTF(PF_DEBUG_MISC, ("altq: started\n")); break; } case DIOCSTOPALTQ: { struct pf_altq *altq; /* disable all altq interfaces on active list */ TAILQ_FOREACH(altq, pf_altqs_active, entries) { if (altq->qname[0] == 0) { error = pf_disable_altq(altq); if (error != 0) break; } } if (error == 0) pf_altq_running = 0; DPFPRINTF(PF_DEBUG_MISC, ("altq: stopped\n")); break; } case DIOCADDALTQ: { struct pfioc_altq *pa = (struct pfioc_altq *)addr; struct pf_altq *altq, *a; if (pa->ticket != ticket_altqs_inactive) { error = EBUSY; break; } altq = pool_get(&pf_altq_pl, PR_NOWAIT); if (altq == NULL) { error = ENOMEM; break; } bcopy(&pa->altq, altq, sizeof(struct pf_altq)); /* * if this is for a queue, find the discipline and * copy the necessary fields */ if (altq->qname[0] != 0) { if ((altq->qid = pf_qname2qid(altq->qname)) == 0) { error = EBUSY; pool_put(&pf_altq_pl, altq); break; } TAILQ_FOREACH(a, pf_altqs_inactive, entries) { if (strncmp(a->ifname, altq->ifname, IFNAMSIZ) == 0 && a->qname[0] == 0) { altq->altq_disc = a->altq_disc; break; } } } error = altq_add(altq); if (error) { pool_put(&pf_altq_pl, altq); break; } TAILQ_INSERT_TAIL(pf_altqs_inactive, altq, entries); bcopy(altq, &pa->altq, sizeof(struct pf_altq)); break; } case DIOCGETALTQS: { struct pfioc_altq *pa = (struct pfioc_altq *)addr; struct pf_altq *altq; pa->nr = 0; TAILQ_FOREACH(altq, pf_altqs_active, entries) pa->nr++; pa->ticket = ticket_altqs_active; break; } case DIOCGETALTQ: { struct pfioc_altq *pa = (struct pfioc_altq *)addr; struct pf_altq *altq; u_int32_t nr; if (pa->ticket != ticket_altqs_active) { error = EBUSY; break; } nr = 0; altq = TAILQ_FIRST(pf_altqs_active); while ((altq != NULL) && (nr < pa->nr)) { altq = TAILQ_NEXT(altq, entries); nr++; } if (altq == NULL) { error = EBUSY; break; } bcopy(altq, &pa->altq, sizeof(struct pf_altq)); break; } case DIOCCHANGEALTQ: /* CHANGEALTQ not supported yet! */ error = ENODEV; break; case DIOCGETQSTATS: { struct pfioc_qstats *pq = (struct pfioc_qstats *)addr; struct pf_altq *altq; u_int32_t nr; int nbytes; if (pq->ticket != ticket_altqs_active) { error = EBUSY; break; } nbytes = pq->nbytes; nr = 0; altq = TAILQ_FIRST(pf_altqs_active); while ((altq != NULL) && (nr < pq->nr)) { altq = TAILQ_NEXT(altq, entries); nr++; } if (altq == NULL) { error = EBUSY; break; } error = altq_getqstats(altq, pq->buf, &nbytes); if (error == 0) { pq->scheduler = altq->scheduler; pq->nbytes = nbytes; } break; } #endif /* ALTQ */ case DIOCBEGINADDRS: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; pf_empty_pool(&pf_pabuf); pp->ticket = ++ticket_pabuf; break; } case DIOCADDADDR: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; #ifndef INET if (pp->af == AF_INET) { error = EAFNOSUPPORT; break; } #endif /* INET */ #ifndef INET6 if (pp->af == AF_INET6) { error = EAFNOSUPPORT; break; } #endif /* INET6 */ if (pp->addr.addr.type != PF_ADDR_ADDRMASK && pp->addr.addr.type != PF_ADDR_DYNIFTL && pp->addr.addr.type != PF_ADDR_TABLE) { error = EINVAL; break; } pa = pool_get(&pf_pooladdr_pl, PR_NOWAIT); if (pa == NULL) { error = ENOMEM; break; } bcopy(&pp->addr, pa, sizeof(struct pf_pooladdr)); if (pa->ifname[0]) { pa->kif = pfi_attach_rule(pa->ifname); if (pa->kif == NULL) { pool_put(&pf_pooladdr_pl, pa); error = EINVAL; break; } } if (pfi_dynaddr_setup(&pa->addr, pp->af)) { pfi_dynaddr_remove(&pa->addr); pfi_detach_rule(pa->kif); pool_put(&pf_pooladdr_pl, pa); error = EINVAL; break; } TAILQ_INSERT_TAIL(&pf_pabuf, pa, entries); break; } case DIOCGETADDRS: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; pp->nr = 0; pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action, pp->r_num, 0, 1, 0); if (pool == NULL) { error = EBUSY; break; } TAILQ_FOREACH(pa, &pool->list, entries) pp->nr++; break; } case DIOCGETADDR: { struct pfioc_pooladdr *pp = (struct pfioc_pooladdr *)addr; u_int32_t nr = 0; pool = pf_get_pool(pp->anchor, pp->ticket, pp->r_action, pp->r_num, 0, 1, 1); if (pool == NULL) { error = EBUSY; break; } pa = TAILQ_FIRST(&pool->list); while ((pa != NULL) && (nr < pp->nr)) { pa = TAILQ_NEXT(pa, entries); nr++; } if (pa == NULL) { error = EBUSY; break; } bcopy(pa, &pp->addr, sizeof(struct pf_pooladdr)); pfi_dynaddr_copyout(&pp->addr.addr); pf_tbladdr_copyout(&pp->addr.addr); break; } case DIOCCHANGEADDR: { struct pfioc_pooladdr *pca = (struct pfioc_pooladdr *)addr; struct pf_pooladdr *oldpa = NULL, *newpa = NULL; struct pf_ruleset *ruleset; if (pca->action < PF_CHANGE_ADD_HEAD || pca->action > PF_CHANGE_REMOVE) { error = EINVAL; break; } if (pca->addr.addr.type != PF_ADDR_ADDRMASK && pca->addr.addr.type != PF_ADDR_DYNIFTL && pca->addr.addr.type != PF_ADDR_TABLE) { error = EINVAL; break; } ruleset = pf_find_ruleset(pca->anchor); if (ruleset == NULL) { error = EBUSY; break; } pool = pf_get_pool(pca->anchor, pca->ticket, pca->r_action, pca->r_num, pca->r_last, 1, 1); if (pool == NULL) { error = EBUSY; break; } if (pca->action != PF_CHANGE_REMOVE) { newpa = pool_get(&pf_pooladdr_pl, PR_NOWAIT); if (newpa == NULL) { error = ENOMEM; break; } bcopy(&pca->addr, newpa, sizeof(struct pf_pooladdr)); #ifndef INET if (pca->af == AF_INET) { pool_put(&pf_pooladdr_pl, newpa); error = EAFNOSUPPORT; break; } #endif /* INET */ #ifndef INET6 if (pca->af == AF_INET6) { pool_put(&pf_pooladdr_pl, newpa); error = EAFNOSUPPORT; break; } #endif /* INET6 */ if (newpa->ifname[0]) { newpa->kif = pfi_attach_rule(newpa->ifname); if (newpa->kif == NULL) { pool_put(&pf_pooladdr_pl, newpa); error = EINVAL; break; } } else newpa->kif = NULL; if (pfi_dynaddr_setup(&newpa->addr, pca->af) || pf_tbladdr_setup(ruleset, &newpa->addr)) { pfi_dynaddr_remove(&newpa->addr); pfi_detach_rule(newpa->kif); pool_put(&pf_pooladdr_pl, newpa); error = EINVAL; break; } } if (pca->action == PF_CHANGE_ADD_HEAD) oldpa = TAILQ_FIRST(&pool->list); else if (pca->action == PF_CHANGE_ADD_TAIL) oldpa = TAILQ_LAST(&pool->list, pf_palist); else { int i = 0; oldpa = TAILQ_FIRST(&pool->list); while ((oldpa != NULL) && (i < pca->nr)) { oldpa = TAILQ_NEXT(oldpa, entries); i++; } if (oldpa == NULL) { error = EINVAL; break; } } if (pca->action == PF_CHANGE_REMOVE) { TAILQ_REMOVE(&pool->list, oldpa, entries); pfi_dynaddr_remove(&oldpa->addr); pf_tbladdr_remove(&oldpa->addr); pfi_detach_rule(oldpa->kif); pool_put(&pf_pooladdr_pl, oldpa); } else { if (oldpa == NULL) TAILQ_INSERT_TAIL(&pool->list, newpa, entries); else if (pca->action == PF_CHANGE_ADD_HEAD || pca->action == PF_CHANGE_ADD_BEFORE) TAILQ_INSERT_BEFORE(oldpa, newpa, entries); else TAILQ_INSERT_AFTER(&pool->list, oldpa, newpa, entries); } pool->cur = TAILQ_FIRST(&pool->list); PF_ACPY(&pool->counter, &pool->cur->addr.v.a.addr, pca->af); break; } case DIOCGETRULESETS: { struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; struct pf_ruleset *ruleset; struct pf_anchor *anchor; pr->path[sizeof(pr->path) - 1] = 0; if ((ruleset = pf_find_ruleset(pr->path)) == NULL) { error = EINVAL; break; } pr->nr = 0; if (ruleset->anchor == NULL) { /* XXX kludge for pf_main_ruleset */ RB_FOREACH(anchor, pf_anchor_global, &pf_anchors) if (anchor->parent == NULL) pr->nr++; } else { RB_FOREACH(anchor, pf_anchor_node, &ruleset->anchor->children) pr->nr++; } break; } case DIOCGETRULESET: { struct pfioc_ruleset *pr = (struct pfioc_ruleset *)addr; struct pf_ruleset *ruleset; struct pf_anchor *anchor; u_int32_t nr = 0; pr->path[sizeof(pr->path) - 1] = 0; if ((ruleset = pf_find_ruleset(pr->path)) == NULL) { error = EINVAL; break; } pr->name[0] = 0; if (ruleset->anchor == NULL) { /* XXX kludge for pf_main_ruleset */ RB_FOREACH(anchor, pf_anchor_global, &pf_anchors) if (anchor->parent == NULL && nr++ == pr->nr) { strlcpy(pr->name, anchor->name, sizeof(pr->name)); break; } } else { RB_FOREACH(anchor, pf_anchor_node, &ruleset->anchor->children) if (nr++ == pr->nr) { strlcpy(pr->name, anchor->name, sizeof(pr->name)); break; } } if (!pr->name[0]) error = EBUSY; break; } case DIOCRCLRTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != 0) { error = ENODEV; break; } error = pfr_clr_tables(&io->pfrio_table, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRADDTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } error = pfr_add_tables(io->pfrio_buffer, io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRDELTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } error = pfr_del_tables(io->pfrio_buffer, io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRGETTABLES: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } error = pfr_get_tables(&io->pfrio_table, io->pfrio_buffer, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRGETTSTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_tstats)) { error = ENODEV; break; } error = pfr_get_tstats(&io->pfrio_table, io->pfrio_buffer, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRCLRTSTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } error = pfr_clr_tstats(io->pfrio_buffer, io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRSETTFLAGS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_table)) { error = ENODEV; break; } error = pfr_set_tflags(io->pfrio_buffer, io->pfrio_size, io->pfrio_setflag, io->pfrio_clrflag, &io->pfrio_nchange, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRCLRADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != 0) { error = ENODEV; break; } error = pfr_clr_addrs(&io->pfrio_table, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRADDADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } error = pfr_add_addrs(&io->pfrio_table, io->pfrio_buffer, io->pfrio_size, &io->pfrio_nadd, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRDELADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } error = pfr_del_addrs(&io->pfrio_table, io->pfrio_buffer, io->pfrio_size, &io->pfrio_ndel, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRSETADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } error = pfr_set_addrs(&io->pfrio_table, io->pfrio_buffer, io->pfrio_size, &io->pfrio_size2, &io->pfrio_nadd, &io->pfrio_ndel, &io->pfrio_nchange, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRGETADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } error = pfr_get_addrs(&io->pfrio_table, io->pfrio_buffer, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRGETASTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_astats)) { error = ENODEV; break; } error = pfr_get_astats(&io->pfrio_table, io->pfrio_buffer, &io->pfrio_size, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRCLRASTATS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } error = pfr_clr_astats(&io->pfrio_table, io->pfrio_buffer, io->pfrio_size, &io->pfrio_nzero, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRTSTADDRS: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } error = pfr_tst_addrs(&io->pfrio_table, io->pfrio_buffer, io->pfrio_size, &io->pfrio_nmatch, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCRINADEFINE: { struct pfioc_table *io = (struct pfioc_table *)addr; if (io->pfrio_esize != sizeof(struct pfr_addr)) { error = ENODEV; break; } error = pfr_ina_define(&io->pfrio_table, io->pfrio_buffer, io->pfrio_size, &io->pfrio_nadd, &io->pfrio_naddr, io->pfrio_ticket, io->pfrio_flags | PFR_FLAG_USERIOCTL); break; } case DIOCOSFPADD: { struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; error = pf_osfp_add(io); break; } case DIOCOSFPGET: { struct pf_osfp_ioctl *io = (struct pf_osfp_ioctl *)addr; error = pf_osfp_get(io); break; } case DIOCXBEGIN: { struct pfioc_trans *io = (struct pfioc_trans *) addr; static struct pfioc_trans_e ioe; static struct pfr_table table; int i; if (io->esize != sizeof(ioe)) { error = ENODEV; goto fail; } for (i = 0; i < io->size; i++) { if (copyin(io->array+i, &ioe, sizeof(ioe))) { error = EFAULT; goto fail; } switch (ioe.rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe.anchor[0]) { error = EINVAL; goto fail; } if ((error = pf_begin_altq(&ioe.ticket))) goto fail; break; #endif /* ALTQ */ case PF_RULESET_TABLE: bzero(&table, sizeof(table)); strlcpy(table.pfrt_anchor, ioe.anchor, sizeof(table.pfrt_anchor)); if ((error = pfr_ina_begin(&table, &ioe.ticket, NULL, 0))) goto fail; break; default: if ((error = pf_begin_rules(&ioe.ticket, ioe.rs_num, ioe.anchor))) goto fail; break; } if (copyout(&ioe, io->array+i, sizeof(io->array[i]))) { error = EFAULT; goto fail; } } break; } case DIOCXROLLBACK: { struct pfioc_trans *io = (struct pfioc_trans *) addr; static struct pfioc_trans_e ioe; static struct pfr_table table; int i; if (io->esize != sizeof(ioe)) { error = ENODEV; goto fail; } for (i = 0; i < io->size; i++) { if (copyin(io->array+i, &ioe, sizeof(ioe))) { error = EFAULT; goto fail; } switch (ioe.rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe.anchor[0]) { error = EINVAL; goto fail; } if ((error = pf_rollback_altq(ioe.ticket))) goto fail; /* really bad */ break; #endif /* ALTQ */ case PF_RULESET_TABLE: bzero(&table, sizeof(table)); strlcpy(table.pfrt_anchor, ioe.anchor, sizeof(table.pfrt_anchor)); if ((error = pfr_ina_rollback(&table, ioe.ticket, NULL, 0))) goto fail; /* really bad */ break; default: if ((error = pf_rollback_rules(ioe.ticket, ioe.rs_num, ioe.anchor))) goto fail; /* really bad */ break; } } break; } case DIOCXCOMMIT: { struct pfioc_trans *io = (struct pfioc_trans *) addr; static struct pfioc_trans_e ioe; static struct pfr_table table; struct pf_ruleset *rs; int i; if (io->esize != sizeof(ioe)) { error = ENODEV; goto fail; } /* first makes sure everything will succeed */ for (i = 0; i < io->size; i++) { if (copyin(io->array+i, &ioe, sizeof(ioe))) { error = EFAULT; goto fail; } switch (ioe.rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe.anchor[0]) { error = EINVAL; goto fail; } if (!altqs_inactive_open || ioe.ticket != ticket_altqs_inactive) { error = EBUSY; goto fail; } break; #endif /* ALTQ */ case PF_RULESET_TABLE: rs = pf_find_ruleset(ioe.anchor); if (rs == NULL || !rs->topen || ioe.ticket != rs->tticket) { error = EBUSY; goto fail; } break; default: if (ioe.rs_num < 0 || ioe.rs_num >= PF_RULESET_MAX) { error = EINVAL; goto fail; } rs = pf_find_ruleset(ioe.anchor); if (rs == NULL || !rs->rules[ioe.rs_num].inactive.open || rs->rules[ioe.rs_num].inactive.ticket != ioe.ticket) { error = EBUSY; goto fail; } break; } } /* now do the commit - no errors should happen here */ for (i = 0; i < io->size; i++) { if (copyin(io->array+i, &ioe, sizeof(ioe))) { error = EFAULT; goto fail; } switch (ioe.rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if ((error = pf_commit_altq(ioe.ticket))) goto fail; /* really bad */ break; #endif /* ALTQ */ case PF_RULESET_TABLE: bzero(&table, sizeof(table)); strlcpy(table.pfrt_anchor, ioe.anchor, sizeof(table.pfrt_anchor)); if ((error = pfr_ina_commit(&table, ioe.ticket, NULL, NULL, 0))) goto fail; /* really bad */ break; default: if ((error = pf_commit_rules(ioe.ticket, ioe.rs_num, ioe.anchor))) goto fail; /* really bad */ break; } } break; } case DIOCGETSRCNODES: { struct pfioc_src_nodes *psn = (struct pfioc_src_nodes *)addr; struct pf_src_node *n; struct pf_src_node *p, pstore; u_int32_t nr = 0; int space = psn->psn_len; if (space == 0) { RB_FOREACH(n, pf_src_tree, &tree_src_tracking) nr++; psn->psn_len = sizeof(struct pf_src_node) * nr; break; } p = psn->psn_src_nodes; RB_FOREACH(n, pf_src_tree, &tree_src_tracking) { int secs = time_second; if ((nr + 1) * sizeof(*p) > (unsigned)psn->psn_len) break; bcopy(n, &pstore, sizeof(pstore)); if (n->rule.ptr != NULL) pstore.rule.nr = n->rule.ptr->nr; pstore.creation = secs - pstore.creation; if (pstore.expire > secs) pstore.expire -= secs; else pstore.expire = 0; error = copyout(&pstore, p, sizeof(*p)); if (error) goto fail; p++; nr++; } psn->psn_len = sizeof(struct pf_src_node) * nr; break; } case DIOCCLRSRCNODES: { struct pf_src_node *n; struct pf_state *state; RB_FOREACH(state, pf_state_tree_id, &tree_id) { state->src_node = NULL; state->nat_src_node = NULL; } RB_FOREACH(n, pf_src_tree, &tree_src_tracking) { n->expire = 1; n->states = 0; } pf_purge_expired_src_nodes(); pf_status.src_nodes = 0; break; } case DIOCSETHOSTID: { u_int32_t *hostid = (u_int32_t *)addr; if (*hostid == 0) { error = EINVAL; goto fail; } pf_status.hostid = *hostid; break; } case DIOCOSFPFLUSH: pf_osfp_flush(); break; case DIOCIGETIFACES: { struct pfioc_iface *io = (struct pfioc_iface *)addr; if (io->pfiio_esize != sizeof(struct pfi_if)) { error = ENODEV; break; } error = pfi_get_ifaces(io->pfiio_name, io->pfiio_buffer, &io->pfiio_size, io->pfiio_flags); break; } case DIOCICLRISTATS: { struct pfioc_iface *io = (struct pfioc_iface *)addr; error = pfi_clr_istats(io->pfiio_name, &io->pfiio_nzero, io->pfiio_flags); break; } default: error = ENODEV; break; } fail: splx(s); return (error); } #ifdef __NetBSD__ int pfil4_wrapper(void *arg, struct mbuf **mp, struct ifnet *ifp, int dir) { int error; /* * ensure that mbufs are writable beforehand * as it's assumed by pf code. * ip hdr (60 bytes) + tcp hdr (60 bytes) should be enough. * XXX inefficient */ error = m_makewritable(mp, 0, 60 + 60, M_DONTWAIT); if (error) { m_freem(*mp); *mp = NULL; return error; } /* * If the packet is out-bound, we can't delay checksums * here. For in-bound, the checksum has already been * validated. */ if (dir == PFIL_OUT) { if ((*mp)->m_pkthdr.csum_flags & (M_CSUM_TCPv4|M_CSUM_UDPv4)) { in_delayed_cksum(*mp); (*mp)->m_pkthdr.csum_flags &= ~(M_CSUM_TCPv4|M_CSUM_UDPv4); } } if (pf_test(dir == PFIL_OUT ? PF_OUT : PF_IN, ifp, mp, NULL) != PF_PASS) { m_freem(*mp); *mp = NULL; return EHOSTUNREACH; } /* * we're not compatible with fast-forward. */ if (dir == PFIL_IN) { (*mp)->m_flags &= ~M_CANFASTFWD; } return (0); } #ifdef INET6 int pfil6_wrapper(void *arg, struct mbuf **mp, struct ifnet *ifp, int dir) { int error; /* * ensure that mbufs are writable beforehand * as it's assumed by pf code. * XXX inefficient */ error = m_makewritable(mp, 0, M_COPYALL, M_DONTWAIT); if (error) { m_freem(*mp); *mp = NULL; return error; } if (pf_test6(dir == PFIL_OUT ? PF_OUT : PF_IN, ifp, mp, NULL) != PF_PASS) { m_freem(*mp); *mp = NULL; return EHOSTUNREACH; } else return (0); } #endif int pfil_ifnet_wrapper(void *arg, struct mbuf **mp, struct ifnet *ifp, int dir) { u_long cmd = (u_long)mp; switch (cmd) { case PFIL_IFNET_ATTACH: pfi_attach_ifnet(ifp); break; case PFIL_IFNET_DETACH: pfi_detach_ifnet(ifp); break; } return (0); } int pfil_ifaddr_wrapper(void *arg, struct mbuf **mp, struct ifnet *ifp, int dir) { extern void pfi_kifaddr_update_if(struct ifnet *); u_long cmd = (u_long)mp; switch (cmd) { case SIOCSIFADDR: case SIOCAIFADDR: case SIOCDIFADDR: #ifdef INET6 case SIOCAIFADDR_IN6: case SIOCDIFADDR_IN6: #endif pfi_kifaddr_update_if(ifp); break; default: panic("unexpected ioctl"); } return (0); } static int pf_pfil_attach(void) { struct pfil_head *ph_inet; #ifdef INET6 struct pfil_head *ph_inet6; #endif int error; int i; if (pf_pfil_attached) return (0); error = pfil_add_hook(pfil_ifnet_wrapper, NULL, PFIL_IFNET, &if_pfil); if (error) goto bad1; error = pfil_add_hook(pfil_ifaddr_wrapper, NULL, PFIL_IFADDR, &if_pfil); if (error) goto bad2; ph_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET); if (ph_inet) error = pfil_add_hook((void *)pfil4_wrapper, NULL, PFIL_IN|PFIL_OUT, ph_inet); else error = ENOENT; if (error) goto bad3; #ifdef INET6 ph_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6); if (ph_inet6) error = pfil_add_hook((void *)pfil6_wrapper, NULL, PFIL_IN|PFIL_OUT, ph_inet6); else error = ENOENT; if (error) goto bad4; #endif for (i = 0; i < if_indexlim; i++) if (ifindex2ifnet[i]) pfi_attach_ifnet(ifindex2ifnet[i]); pf_pfil_attached = 1; return (0); #ifdef INET6 bad4: pfil_remove_hook(pfil4_wrapper, NULL, PFIL_IN|PFIL_OUT, ph_inet); #endif bad3: pfil_remove_hook(pfil_ifaddr_wrapper, NULL, PFIL_IFADDR, &if_pfil); bad2: pfil_remove_hook(pfil_ifnet_wrapper, NULL, PFIL_IFNET, &if_pfil); bad1: return (error); } static int pf_pfil_detach(void) { struct pfil_head *ph_inet; #ifdef INET6 struct pfil_head *ph_inet6; #endif int i; if (pf_pfil_attached == 0) return (0); for (i = 0; i < if_indexlim; i++) if (pfi_index2kif[i]) pfi_detach_ifnet(ifindex2ifnet[i]); pfil_remove_hook(pfil_ifaddr_wrapper, NULL, PFIL_IFADDR, &if_pfil); pfil_remove_hook(pfil_ifnet_wrapper, NULL, PFIL_IFNET, &if_pfil); ph_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET); if (ph_inet) pfil_remove_hook((void *)pfil4_wrapper, NULL, PFIL_IN|PFIL_OUT, ph_inet); #ifdef INET6 ph_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6); if (ph_inet6) pfil_remove_hook((void *)pfil6_wrapper, NULL, PFIL_IN|PFIL_OUT, ph_inet6); #endif pf_pfil_attached = 0; return (0); } #endif