/* $OpenBSD: pf_ioctl.c,v 1.175 2007/02/26 22:47:43 deraadt 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 __FreeBSD__ #include "opt_inet.h" #include "opt_inet6.h" #include __FBSDID("$FreeBSD$"); #endif #ifdef __FreeBSD__ #include "opt_bpf.h" #include "opt_pf.h" #ifdef DEV_BPF #define NBPFILTER DEV_BPF #else #define NBPFILTER 0 #endif #ifdef DEV_PFLOG #define NPFLOG DEV_PFLOG #else #define NPFLOG 0 #endif #ifdef DEV_PFSYNC #define NPFSYNC DEV_PFSYNC #else #define NPFSYNC 0 #endif #else #include "bpfilter.h" #include "pflog.h" #include "pfsync.h" #endif #include #include #include #include #include #include #include #include #include #include #ifdef __FreeBSD__ #include #include #include #include #else #include #include #endif #include #include #include #ifndef __FreeBSD__ #include #include #endif #include #include #include #include #include #include #include #include #include #ifdef __FreeBSD__ #include #else #include #include #endif #include #if NPFSYNC > 0 #include #endif /* NPFSYNC > 0 */ #include #ifdef INET6 #include #include #endif /* INET6 */ #ifdef ALTQ #include #endif #ifdef __FreeBSD__ #include #include #include #include #endif /* __FreeBSD__ */ #ifdef __FreeBSD__ void init_zone_var(void); void cleanup_pf_zone(void); int pfattach(void); #else void pfattach(int); void pf_thread_create(void *); int pfopen(dev_t, int, int, struct proc *); int pfclose(dev_t, int, int, struct proc *); #endif 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); void pf_mv_pool(struct pf_palist *, struct pf_palist *); void pf_empty_pool(struct pf_palist *); #ifdef __FreeBSD__ int pfioctl(struct cdev *, u_long, caddr_t, int, struct thread *); #else int pfioctl(struct cdev *, u_long, caddr_t, int, struct proc *); #endif #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_setup_pfsync_matching(struct pf_ruleset *); void pf_hash_rule(MD5_CTX *, struct pf_rule *); void pf_hash_rule_addr(MD5_CTX *, struct pf_rule_addr *); int pf_commit_rules(u_int32_t, int, char *); struct pf_rule pf_default_rule; #ifdef __FreeBSD__ struct sx pf_consistency_lock; SX_SYSINIT(pf_consistency_lock, &pf_consistency_lock, "pf_statetbl_lock"); #else struct rwlock pf_consistency_lock = RWLOCK_INITIALIZER; #endif #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 u_int16_t tagname2tag(struct pf_tags *, char *); void tag2tagname(struct pf_tags *, u_int16_t, char *); void tag_unref(struct pf_tags *, u_int16_t); int pf_rtlabel_add(struct pf_addr_wrap *); void pf_rtlabel_remove(struct pf_addr_wrap *); void pf_rtlabel_copyout(struct pf_addr_wrap *); #define DPFPRINTF(n, x) if (pf_status.debug >= (n)) printf x #ifdef __FreeBSD__ static struct cdev *pf_dev; /* * XXX - These are new and need to be checked when moveing to a new version */ static void pf_clear_states(void); static int pf_clear_tables(void); static void pf_clear_srcnodes(void); /* * XXX - These are new and need to be checked when moveing to a new version */ /* * Wrapper functions for pfil(9) hooks */ static int pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp); static int pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp); #ifdef INET6 static int pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp); static int pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp); #endif static int hook_pf(void); static int dehook_pf(void); static int shutdown_pf(void); static int pf_load(void); static int pf_unload(void); static struct cdevsw pf_cdevsw = { .d_ioctl = pfioctl, .d_name = PF_NAME, .d_version = D_VERSION, }; static volatile int pf_pfil_hooked = 0; int pf_end_threads = 0; struct mtx pf_task_mtx; pflog_packet_t *pflog_packet_ptr = NULL; int debug_pfugidhack = 0; SYSCTL_INT(_debug, OID_AUTO, pfugidhack, CTLFLAG_RW, &debug_pfugidhack, 0, "Enable/disable pf user/group rules mpsafe hack"); void init_pf_mutex(void) { mtx_init(&pf_task_mtx, "pf task mtx", NULL, MTX_DEF); } void destroy_pf_mutex(void) { mtx_destroy(&pf_task_mtx); } void init_zone_var(void) { pf_src_tree_pl = pf_rule_pl = NULL; pf_state_pl = pf_altq_pl = pf_pooladdr_pl = NULL; pf_frent_pl = pf_frag_pl = pf_cache_pl = pf_cent_pl = NULL; pf_state_scrub_pl = NULL; pfr_ktable_pl = pfr_kentry_pl = NULL; } void cleanup_pf_zone(void) { UMA_DESTROY(pf_src_tree_pl); UMA_DESTROY(pf_rule_pl); UMA_DESTROY(pf_state_pl); UMA_DESTROY(pf_altq_pl); UMA_DESTROY(pf_pooladdr_pl); UMA_DESTROY(pf_frent_pl); UMA_DESTROY(pf_frag_pl); UMA_DESTROY(pf_cache_pl); UMA_DESTROY(pf_cent_pl); UMA_DESTROY(pfr_ktable_pl); UMA_DESTROY(pfr_kentry_pl2); UMA_DESTROY(pfr_kentry_pl); UMA_DESTROY(pf_state_scrub_pl); UMA_DESTROY(pfi_addr_pl); } int pfattach(void) { u_int32_t *my_timeout = pf_default_rule.timeout; int error = 1; do { UMA_CREATE(pf_src_tree_pl,struct pf_src_node, "pfsrctrpl"); UMA_CREATE(pf_rule_pl, struct pf_rule, "pfrulepl"); UMA_CREATE(pf_state_pl, struct pf_state, "pfstatepl"); UMA_CREATE(pf_altq_pl, struct pf_altq, "pfaltqpl"); UMA_CREATE(pf_pooladdr_pl, struct pf_pooladdr, "pfpooladdrpl"); UMA_CREATE(pfr_ktable_pl, struct pfr_ktable, "pfrktable"); UMA_CREATE(pfr_kentry_pl, struct pfr_kentry, "pfrkentry"); UMA_CREATE(pfr_kentry_pl2, struct pfr_kentry, "pfrkentry2"); UMA_CREATE(pf_frent_pl, struct pf_frent, "pffrent"); UMA_CREATE(pf_frag_pl, struct pf_fragment, "pffrag"); UMA_CREATE(pf_cache_pl, struct pf_fragment, "pffrcache"); UMA_CREATE(pf_cent_pl, struct pf_frcache, "pffrcent"); UMA_CREATE(pf_state_scrub_pl, struct pf_state_scrub, "pfstatescrub"); UMA_CREATE(pfi_addr_pl, struct pfi_dynaddr, "pfiaddrpl"); error = 0; } while(0); if (error) { cleanup_pf_zone(); return (error); } pfr_initialize(); pfi_initialize(); if ( (error = pf_osfp_initialize()) ) { cleanup_pf_zone(); pf_osfp_cleanup(); return (error); } pf_pool_limits[PF_LIMIT_STATES].pp = pf_state_pl; pf_pool_limits[PF_LIMIT_STATES].limit = PFSTATE_HIWAT; pf_pool_limits[PF_LIMIT_SRC_NODES].pp = pf_src_tree_pl; pf_pool_limits[PF_LIMIT_SRC_NODES].limit = PFSNODE_HIWAT; pf_pool_limits[PF_LIMIT_FRAGS].pp = pf_frent_pl; pf_pool_limits[PF_LIMIT_FRAGS].limit = PFFRAG_FRENT_HIWAT; pf_pool_limits[PF_LIMIT_TABLES].pp = pfr_ktable_pl; pf_pool_limits[PF_LIMIT_TABLES].limit = PFR_KTABLE_HIWAT; pf_pool_limits[PF_LIMIT_TABLE_ENTRIES].pp = pfr_kentry_pl; pf_pool_limits[PF_LIMIT_TABLE_ENTRIES].limit = PFR_KENTRY_HIWAT; uma_zone_set_max(pf_pool_limits[PF_LIMIT_STATES].pp, pf_pool_limits[PF_LIMIT_STATES].limit); 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_list); /* 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; pf_default_rule.rtableid = -1; /* initialize default timeouts */ my_timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; my_timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; my_timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; my_timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; my_timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; my_timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; my_timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; my_timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; my_timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; my_timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; my_timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; my_timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; my_timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; my_timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; my_timeout[PFTM_FRAG] = PFTM_FRAG_VAL; my_timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; my_timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; my_timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; my_timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; my_timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; pf_normalize_init(); bzero(&pf_status, sizeof(pf_status)); pf_status.debug = PF_DEBUG_URGENT; pf_pfil_hooked = 0; /* XXX do our best to avoid a conflict */ pf_status.hostid = arc4random(); if (kproc_create(pf_purge_thread, NULL, NULL, 0, 0, "pfpurge")) return (ENXIO); return (error); } #else /* !__FreeBSD__ */ 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); if (ctob(physmem) <= 100*1024*1024) pf_pool_limits[PF_LIMIT_TABLE_ENTRIES].limit = PFR_KENTRY_HIWAT_SMALL; 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_list); /* 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; pf_default_rule.rtableid = -1; /* initialize default timeouts */ timeout[PFTM_TCP_FIRST_PACKET] = PFTM_TCP_FIRST_PACKET_VAL; timeout[PFTM_TCP_OPENING] = PFTM_TCP_OPENING_VAL; timeout[PFTM_TCP_ESTABLISHED] = PFTM_TCP_ESTABLISHED_VAL; timeout[PFTM_TCP_CLOSING] = PFTM_TCP_CLOSING_VAL; timeout[PFTM_TCP_FIN_WAIT] = PFTM_TCP_FIN_WAIT_VAL; timeout[PFTM_TCP_CLOSED] = PFTM_TCP_CLOSED_VAL; timeout[PFTM_UDP_FIRST_PACKET] = PFTM_UDP_FIRST_PACKET_VAL; timeout[PFTM_UDP_SINGLE] = PFTM_UDP_SINGLE_VAL; timeout[PFTM_UDP_MULTIPLE] = PFTM_UDP_MULTIPLE_VAL; timeout[PFTM_ICMP_FIRST_PACKET] = PFTM_ICMP_FIRST_PACKET_VAL; timeout[PFTM_ICMP_ERROR_REPLY] = PFTM_ICMP_ERROR_REPLY_VAL; timeout[PFTM_OTHER_FIRST_PACKET] = PFTM_OTHER_FIRST_PACKET_VAL; timeout[PFTM_OTHER_SINGLE] = PFTM_OTHER_SINGLE_VAL; timeout[PFTM_OTHER_MULTIPLE] = PFTM_OTHER_MULTIPLE_VAL; timeout[PFTM_FRAG] = PFTM_FRAG_VAL; timeout[PFTM_INTERVAL] = PFTM_INTERVAL_VAL; timeout[PFTM_SRC_NODE] = PFTM_SRC_NODE_VAL; timeout[PFTM_TS_DIFF] = PFTM_TS_DIFF_VAL; timeout[PFTM_ADAPTIVE_START] = PFSTATE_ADAPT_START; timeout[PFTM_ADAPTIVE_END] = PFSTATE_ADAPT_END; 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(); /* require process context to purge states, so perform in a thread */ kproc_create_deferred(pf_thread_create, NULL); } void pf_thread_create(void *v) { if (kproc_create(pf_purge_thread, NULL, NULL, "pfpurge")) panic("pfpurge thread"); } int pfopen(struct cdev *dev, int flags, int fmt, struct proc *p) { if (minor(dev) >= 1) return (ENXIO); return (0); } int pfclose(struct cdev *dev, int flags, int fmt, struct proc *p) { if (minor(dev) >= 1) return (ENXIO); return (0); } #endif /* __FreeBSD__ */ 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); } 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_kif_unref(empty_pool_pa->kif, PFI_KIF_REF_RULE); 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); if (rule->overload_tbl) pfr_detach_table(rule->overload_tbl); } 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 pf_rtlabel_remove(&rule->src.addr); pf_rtlabel_remove(&rule->dst.addr); 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); if (rule->overload_tbl) pfr_detach_table(rule->overload_tbl); } pfi_kif_unref(rule->kif, PFI_KIF_REF_RULE); pf_anchor_remove(rule); pf_empty_pool(&rule->rpool.list); pool_put(&pf_rule_pl, rule); } 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); } 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; } } 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) { tag2tagname(&pf_tags, tagid, p); } void pf_tag_ref(u_int16_t tag) { struct pf_tagname *t; TAILQ_FOREACH(t, &pf_tags, entries) if (t->tag == tag) break; if (t != NULL) t->ref++; } void pf_tag_unref(u_int16_t tag) { tag_unref(&pf_tags, tag); } int pf_rtlabel_add(struct pf_addr_wrap *a) { #ifdef __FreeBSD__ /* XXX_IMPORT: later */ return (0); #else if (a->type == PF_ADDR_RTLABEL && (a->v.rtlabel = rtlabel_name2id(a->v.rtlabelname)) == 0) return (-1); return (0); #endif } void pf_rtlabel_remove(struct pf_addr_wrap *a) { #ifdef __FreeBSD__ /* XXX_IMPORT: later */ #else if (a->type == PF_ADDR_RTLABEL) rtlabel_unref(a->v.rtlabel); #endif } void pf_rtlabel_copyout(struct pf_addr_wrap *a) { #ifdef __FreeBSD__ /* XXX_IMPORT: later */ if (a->type == PF_ADDR_RTLABEL && a->v.rtlabel) strlcpy(a->v.rtlabelname, "?", sizeof(a->v.rtlabelname)); #else const char *name; if (a->type == PF_ADDR_RTLABEL && a->v.rtlabel) { if ((name = rtlabel_id2name(a->v.rtlabel)) == NULL) strlcpy(a->v.rtlabelname, "?", sizeof(a->v.rtlabelname)); else strlcpy(a->v.rtlabelname, name, sizeof(a->v.rtlabelname)); } #endif } #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) { tag2tagname(&pf_qids, (u_int16_t)qid, p); } void pf_qid_unref(u_int32_t qid) { 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 = splnet(); #ifdef __FreeBSD__ PF_UNLOCK(); #endif error = tbr_set(&ifp->if_snd, &tb); #ifdef __FreeBSD__ PF_LOCK(); #endif 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 = splnet(); #ifdef __FreeBSD__ PF_UNLOCK(); #endif error = tbr_set(&ifp->if_snd, &tb); #ifdef __FreeBSD__ PF_LOCK(); #endif 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); rs->rules[rs_num].inactive.rcount--; } *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.rcount--; } rs->rules[rs_num].inactive.open = 0; return (0); } #define PF_MD5_UPD(st, elm) \ MD5Update(ctx, (u_int8_t *) &(st)->elm, sizeof((st)->elm)) #define PF_MD5_UPD_STR(st, elm) \ MD5Update(ctx, (u_int8_t *) (st)->elm, strlen((st)->elm)) #define PF_MD5_UPD_HTONL(st, elm, stor) do { \ (stor) = htonl((st)->elm); \ MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int32_t));\ } while (0) #define PF_MD5_UPD_HTONS(st, elm, stor) do { \ (stor) = htons((st)->elm); \ MD5Update(ctx, (u_int8_t *) &(stor), sizeof(u_int16_t));\ } while (0) void pf_hash_rule_addr(MD5_CTX *ctx, struct pf_rule_addr *pfr) { PF_MD5_UPD(pfr, addr.type); switch (pfr->addr.type) { case PF_ADDR_DYNIFTL: PF_MD5_UPD(pfr, addr.v.ifname); PF_MD5_UPD(pfr, addr.iflags); break; case PF_ADDR_TABLE: PF_MD5_UPD(pfr, addr.v.tblname); break; case PF_ADDR_ADDRMASK: /* XXX ignore af? */ PF_MD5_UPD(pfr, addr.v.a.addr.addr32); PF_MD5_UPD(pfr, addr.v.a.mask.addr32); break; case PF_ADDR_RTLABEL: PF_MD5_UPD(pfr, addr.v.rtlabelname); break; } PF_MD5_UPD(pfr, port[0]); PF_MD5_UPD(pfr, port[1]); PF_MD5_UPD(pfr, neg); PF_MD5_UPD(pfr, port_op); } void pf_hash_rule(MD5_CTX *ctx, struct pf_rule *rule) { u_int16_t x; u_int32_t y; pf_hash_rule_addr(ctx, &rule->src); pf_hash_rule_addr(ctx, &rule->dst); PF_MD5_UPD_STR(rule, label); PF_MD5_UPD_STR(rule, ifname); PF_MD5_UPD_STR(rule, match_tagname); PF_MD5_UPD_HTONS(rule, match_tag, x); /* dup? */ PF_MD5_UPD_HTONL(rule, os_fingerprint, y); PF_MD5_UPD_HTONL(rule, prob, y); PF_MD5_UPD_HTONL(rule, uid.uid[0], y); PF_MD5_UPD_HTONL(rule, uid.uid[1], y); PF_MD5_UPD(rule, uid.op); PF_MD5_UPD_HTONL(rule, gid.gid[0], y); PF_MD5_UPD_HTONL(rule, gid.gid[1], y); PF_MD5_UPD(rule, gid.op); PF_MD5_UPD_HTONL(rule, rule_flag, y); PF_MD5_UPD(rule, action); PF_MD5_UPD(rule, direction); PF_MD5_UPD(rule, af); PF_MD5_UPD(rule, quick); PF_MD5_UPD(rule, ifnot); PF_MD5_UPD(rule, match_tag_not); PF_MD5_UPD(rule, natpass); PF_MD5_UPD(rule, keep_state); PF_MD5_UPD(rule, proto); PF_MD5_UPD(rule, type); PF_MD5_UPD(rule, code); PF_MD5_UPD(rule, flags); PF_MD5_UPD(rule, flagset); PF_MD5_UPD(rule, allow_opts); PF_MD5_UPD(rule, rt); PF_MD5_UPD(rule, tos); } int pf_commit_rules(u_int32_t ticket, int rs_num, char *anchor) { struct pf_ruleset *rs; struct pf_rule *rule, **old_array; struct pf_rulequeue *old_rules; int s, error; u_int32_t old_rcount; 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); /* Calculate checksum for the main ruleset */ if (rs == &pf_main_ruleset) { error = pf_setup_pfsync_matching(rs); if (error != 0) return (error); } /* Swap rules, keep the old. */ s = splsoftnet(); old_rules = rs->rules[rs_num].active.ptr; old_rcount = rs->rules[rs_num].active.rcount; old_array = rs->rules[rs_num].active.ptr_array; rs->rules[rs_num].active.ptr = rs->rules[rs_num].inactive.ptr; rs->rules[rs_num].active.ptr_array = rs->rules[rs_num].inactive.ptr_array; rs->rules[rs_num].active.rcount = rs->rules[rs_num].inactive.rcount; rs->rules[rs_num].inactive.ptr = old_rules; rs->rules[rs_num].inactive.ptr_array = old_array; rs->rules[rs_num].inactive.rcount = old_rcount; 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); if (rs->rules[rs_num].inactive.ptr_array) free(rs->rules[rs_num].inactive.ptr_array, M_TEMP); rs->rules[rs_num].inactive.ptr_array = NULL; rs->rules[rs_num].inactive.rcount = 0; rs->rules[rs_num].inactive.open = 0; pf_remove_if_empty_ruleset(rs); splx(s); return (0); } int pf_setup_pfsync_matching(struct pf_ruleset *rs) { MD5_CTX ctx; struct pf_rule *rule; int rs_cnt; u_int8_t digest[PF_MD5_DIGEST_LENGTH]; MD5Init(&ctx); for (rs_cnt = 0; rs_cnt < PF_RULESET_MAX; rs_cnt++) { /* XXX PF_RULESET_SCRUB as well? */ if (rs_cnt == PF_RULESET_SCRUB) continue; if (rs->rules[rs_cnt].inactive.ptr_array) free(rs->rules[rs_cnt].inactive.ptr_array, M_TEMP); rs->rules[rs_cnt].inactive.ptr_array = NULL; if (rs->rules[rs_cnt].inactive.rcount) { rs->rules[rs_cnt].inactive.ptr_array = malloc(sizeof(caddr_t) * rs->rules[rs_cnt].inactive.rcount, M_TEMP, M_NOWAIT); if (!rs->rules[rs_cnt].inactive.ptr_array) return (ENOMEM); } TAILQ_FOREACH(rule, rs->rules[rs_cnt].inactive.ptr, entries) { pf_hash_rule(&ctx, rule); (rs->rules[rs_cnt].inactive.ptr_array)[rule->nr] = rule; } } MD5Final(digest, &ctx); memcpy(pf_status.pf_chksum, digest, sizeof(pf_status.pf_chksum)); return (0); } int #ifdef __FreeBSD__ pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td) #else pfioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p) #endif { struct pf_pooladdr *pa = NULL; struct pf_pool *pool = NULL; #ifndef __FreeBSD__ int s; #endif int error = 0; /* XXX keep in sync with switch() below */ #ifdef __FreeBSD__ if (securelevel_gt(td->td_ucred, 2)) #else if (securelevel > 1) #endif 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: #ifdef __FreeBSD__ case DIOCGIFSPEED: #endif case DIOCSETIFFLAG: case DIOCCLRIFFLAG: 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 DIOCGETADDRS: case DIOCGETADDR: case DIOCGETSTATE: case DIOCGETSTATUS: case DIOCGETSTATES: case DIOCGETTIMEOUT: case DIOCGETLIMIT: case DIOCGETALTQS: case DIOCGETALTQ: case DIOCGETQSTATS: case DIOCGETRULESETS: case DIOCGETRULESET: case DIOCNATLOOK: case DIOCRGETTABLES: case DIOCRGETTSTATS: case DIOCRGETADDRS: case DIOCRGETASTATS: case DIOCRTSTADDRS: case DIOCOSFPGET: case DIOCGETSRCNODES: case DIOCIGETIFACES: #ifdef __FreeBSD__ case DIOCGIFSPEED: #endif 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) { flags |= FWRITE; /* need write lock for dummy */ break; /* dummy operation ok */ } return (EACCES); case DIOCGETRULE: if (((struct pfioc_rule *)addr)->action == PF_GET_CLR_CNTR) return (EACCES); break; default: return (EACCES); } if (flags & FWRITE) #ifdef __FreeBSD__ sx_xlock(&pf_consistency_lock); else sx_slock(&pf_consistency_lock); #else rw_enter_write(&pf_consistency_lock); else rw_enter_read(&pf_consistency_lock); #endif #ifdef __FreeBSD__ PF_LOCK(); #else s = splsoftnet(); #endif switch (cmd) { case DIOCSTART: if (pf_status.running) error = EEXIST; else { #ifdef __FreeBSD__ PF_UNLOCK(); error = hook_pf(); PF_LOCK(); if (error) { DPFPRINTF(PF_DEBUG_MISC, ("pf: pfil registeration fail\n")); 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 { pf_status.running = 0; #ifdef __FreeBSD__ PF_UNLOCK(); error = dehook_pf(); PF_LOCK(); if (error) { pf_status.running = 1; DPFPRINTF(PF_DEBUG_MISC, ("pf: pfil unregisteration failed\n")); } #endif 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) { #ifdef __FreeBSD__ DPFPRINTF(PF_DEBUG_MISC, ("ticket: %d != [%d]%d\n", pr->ticket, rs_num, ruleset->rules[rs_num].inactive.ticket)); #endif error = EBUSY; break; } if (pr->pool_ticket != ticket_pabuf) { #ifdef __FreeBSD__ DPFPRINTF(PF_DEBUG_MISC, ("pool_ticket: %d != %d\n", pr->pool_ticket, ticket_pabuf)); #endif 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)); #ifdef __FreeBSD__ rule->cuid = td->td_ucred->cr_ruid; rule->cpid = td->td_proc ? td->td_proc->p_pid : 0; #else rule->cuid = p->p_cred->p_ruid; rule->cpid = p->p_pid; #endif 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_kif_get(rule->ifname); if (rule->kif == NULL) { pool_put(&pf_rule_pl, rule); error = EINVAL; break; } pfi_kif_ref(rule->kif, PFI_KIF_REF_RULE); } #ifdef __FreeBSD__ /* ROUTEING */ if (rule->rtableid > 0) #else if (rule->rtableid > 0 && !rtable_exists(rule->rtableid)) #endif error = EBUSY; #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 NPFLOG > 0 #ifdef __FreeBSD__ if (!rule->log) rule->logif = 0; #endif if (rule->logif >= PFLOGIFS_MAX) error = EINVAL; #endif if (pf_rtlabel_add(&rule->src.addr) || pf_rtlabel_add(&rule->dst.addr)) error = EBUSY; 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; if (rule->overload_tblname[0]) { if ((rule->overload_tbl = pfr_attach_table(ruleset, rule->overload_tblname)) == NULL) error = EINVAL; else rule->overload_tbl->pfrkt_flags |= PFR_TFLAG_ACTIVE; } 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; } #ifdef __FreeBSD__ if (!debug_pfugidhack && (rule->uid.op || rule->gid.op || rule->log & PF_LOG_SOCKET_LOOKUP)) { DPFPRINTF(PF_DEBUG_MISC, ("pf: debug.pfugidhack enabled\n")); debug_pfugidhack = 1; } #endif rule->rpool.cur = TAILQ_FIRST(&rule->rpool.list); rule->evaluations = rule->packets[0] = rule->packets[1] = rule->bytes[0] = rule->bytes[1] = 0; TAILQ_INSERT_TAIL(ruleset->rules[rs_num].inactive.ptr, rule, entries); ruleset->rules[rs_num].inactive.rcount++; 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); pf_rtlabel_copyout(&pr->rule.src.addr); pf_rtlabel_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; if (pr->action == PF_GET_CLR_CNTR) { rule->evaluations = 0; rule->packets[0] = rule->packets[1] = 0; rule->bytes[0] = rule->bytes[1] = 0; } 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)); #ifdef __FreeBSD__ newrule->cuid = td->td_ucred->cr_ruid; newrule->cpid = td->td_proc ? td->td_proc->p_pid : 0; #else newrule->cuid = p->p_cred->p_ruid; newrule->cpid = p->p_pid; #endif 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_kif_get(newrule->ifname); if (newrule->kif == NULL) { pool_put(&pf_rule_pl, newrule); error = EINVAL; break; } pfi_kif_ref(newrule->kif, PFI_KIF_REF_RULE); } else newrule->kif = NULL; if (newrule->rtableid > 0 && #ifdef __FreeBSD__ /* ROUTING */ 1) #else !rtable_exists(newrule->rtableid)) #endif error = EBUSY; #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; #ifdef __FreeBSD__ #if NPFLOG > 0 if (!newrule->log) newrule->logif = 0; if (newrule->logif >= PFLOGIFS_MAX) error = EINVAL; #endif #endif if (pf_rtlabel_add(&newrule->src.addr) || pf_rtlabel_add(&newrule->dst.addr)) error = EBUSY; 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; TAILQ_FOREACH(pa, &pf_pabuf, entries) if (pf_tbladdr_setup(ruleset, &pa->addr)) error = EINVAL; if (newrule->overload_tblname[0]) { if ((newrule->overload_tbl = pfr_attach_table( ruleset, newrule->overload_tblname)) == NULL) error = EINVAL; else newrule->overload_tbl->pfrkt_flags |= PFR_TFLAG_ACTIVE; } 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)) && !newrule->anchor)) && (TAILQ_FIRST(&newrule->rpool.list) == NULL)) error = EINVAL; if (error) { pf_rm_rule(NULL, newrule); break; } #ifdef __FreeBSD__ if (!debug_pfugidhack && (newrule->uid.op || newrule->gid.op || newrule->log & PF_LOG_SOCKET_LOOKUP)) { DPFPRINTF(PF_DEBUG_MISC, ("pf: debug.pfugidhack enabled\n")); debug_pfugidhack = 1; } #endif newrule->rpool.cur = TAILQ_FIRST(&newrule->rpool.list); newrule->evaluations = 0; newrule->packets[0] = newrule->packets[1] = 0; newrule->bytes[0] = newrule->bytes[1] = 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); ruleset->rules[rs_num].active.rcount--; } 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); ruleset->rules[rs_num].active.rcount++; } 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, *nexts; struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; int killed = 0; for (state = RB_MIN(pf_state_tree_id, &tree_id); state; state = nexts) { nexts = RB_NEXT(pf_state_tree_id, &tree_id, state); if (!psk->psk_ifname[0] || !strcmp(psk->psk_ifname, state->u.s.kif->pfik_name)) { #if NPFSYNC /* don't send out individual delete messages */ state->sync_flags = PFSTATE_NOSYNC; #endif pf_unlink_state(state); killed++; } } psk->psk_af = killed; #if NPFSYNC pfsync_clear_states(pf_status.hostid, psk->psk_ifname); #endif break; } case DIOCKILLSTATES: { struct pf_state *state, *nexts; struct pf_state_host *src, *dst; struct pfioc_state_kill *psk = (struct pfioc_state_kill *)addr; int killed = 0; for (state = RB_MIN(pf_state_tree_id, &tree_id); state; state = nexts) { nexts = RB_NEXT(pf_state_tree_id, &tree_id, state); if (state->direction == PF_OUT) { src = &state->lan; dst = &state->ext; } else { src = &state->ext; dst = &state->lan; } 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, &src->addr, state->af) && PF_MATCHA(psk->psk_dst.neg, &psk->psk_dst.addr.v.a.addr, &psk->psk_dst.addr.v.a.mask, &dst->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], src->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], dst->port)) && (!psk->psk_ifname[0] || !strcmp(psk->psk_ifname, state->u.s.kif->pfik_name))) { #if NPFSYNC > 0 /* send immediate delete of state */ pfsync_delete_state(state); state->sync_flags |= PFSTATE_NOSYNC; #endif pf_unlink_state(state); killed++; } } 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_kif_get(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_kif_unref(kif, PFI_KIF_REF_NONE); 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; int secs; nr = 0; RB_FOREACH(state, pf_state_tree_id, &tree_id) { if (nr >= ps->nr) break; nr++; } if (state == NULL) { error = EBUSY; break; } secs = time_second; bcopy(state, &ps->state, sizeof(ps->state)); strlcpy(ps->state.u.ifname, state->u.s.kif->pfik_name, sizeof(ps->state.u.ifname)); 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.creation = secs - ps->state.creation; ps->state.expire = pf_state_expires(state); if (ps->state.expire > secs) ps->state.expire -= secs; 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; u_int32_t nr = 0; int space = ps->ps_len; if (space == 0) { nr = pf_status.states; ps->ps_len = sizeof(struct pf_state) * nr; break; } #ifdef __FreeBSD__ PF_UNLOCK(); #endif pstore = malloc(sizeof(*pstore), M_TEMP, M_WAITOK); #ifdef __FreeBSD__ PF_LOCK(); #endif p = ps->ps_states; state = TAILQ_FIRST(&state_list); while (state) { if (state->timeout != PFTM_UNLINKED) { int secs = time_second; if ((nr+1) * sizeof(*p) > (unsigned)ps->ps_len) break; bcopy(state, pstore, sizeof(*pstore)); strlcpy(pstore->u.ifname, state->u.s.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; #ifdef __FreeBSD__ PF_COPYOUT(pstore, p, sizeof(*p), error); #else error = copyout(pstore, p, sizeof(*p)); #endif if (error) { free(pstore, M_TEMP); goto fail; } p++; nr++; } state = TAILQ_NEXT(state, u.s.entry_list); } ps->ps_len = sizeof(struct pf_state) * nr; free(pstore, M_TEMP); 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)); pf_status.since = time_second; if (*pf_status.ifname) pfi_clr_istats(pf_status.ifname); break; } case DIOCNATLOOK: { struct pfioc_natlook *pnl = (struct pfioc_natlook *)addr; struct pf_state *state; struct pf_state_cmp 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->proto == IPPROTO_TCP || pnl->proto == IPPROTO_UDP) && (!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]; if (pt->timeout == PFTM_INTERVAL && pt->seconds == 0) pt->seconds = 1; pf_default_rule.timeout[pt->timeout] = pt->seconds; if (pt->timeout == PFTM_INTERVAL && pt->seconds < old) wakeup(pf_purge_thread); 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 __FreeBSD__ uma_zone_set_max(pf_pool_limits[pl->index].pp, pl->limit); #else if (pool_sethardlimit(pf_pool_limits[pl->index].pp, pl->limit, NULL, 0) != 0) { error = EBUSY; goto fail; } #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: { /* obsoleted by DIOCGETRULE with action=PF_GET_CLR_CNTR */ struct pf_ruleset *ruleset = &pf_main_ruleset; struct pf_rule *rule; TAILQ_FOREACH(rule, ruleset->rules[PF_RULESET_FILTER].active.ptr, entries) { rule->evaluations = 0; rule->packets[0] = rule->packets[1] = 0; rule->bytes[0] = rule->bytes[1] = 0; } break; } #ifdef __FreeBSD__ case DIOCGIFSPEED: { struct pf_ifspeed *psp = (struct pf_ifspeed *)addr; struct pf_ifspeed ps; struct ifnet *ifp; if (psp->ifname[0] != 0) { /* Can we completely trust user-land? */ strlcpy(ps.ifname, psp->ifname, IFNAMSIZ); ifp = ifunit(ps.ifname); if (ifp != NULL) psp->baudrate = ifp->if_baudrate; else error = EINVAL; } else error = EINVAL; break; } #endif /* __FreeBSD__ */ #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; } } } #ifdef __FreeBSD__ PF_UNLOCK(); #endif error = altq_add(altq); #ifdef __FreeBSD__ PF_LOCK(); #endif 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; } #ifdef __FreeBSD__ PF_UNLOCK(); #endif error = altq_getqstats(altq, pq->buf, &nbytes); #ifdef __FreeBSD__ PF_LOCK(); #endif 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; if (pp->ticket != ticket_pabuf) { error = EBUSY; break; } #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_kif_get(pa->ifname); if (pa->kif == NULL) { pool_put(&pf_pooladdr_pl, pa); error = EINVAL; break; } pfi_kif_ref(pa->kif, PFI_KIF_REF_RULE); } if (pfi_dynaddr_setup(&pa->addr, pp->af)) { pfi_dynaddr_remove(&pa->addr); pfi_kif_unref(pa->kif, PFI_KIF_REF_RULE); 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); pf_rtlabel_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_kif_get(newpa->ifname); if (newpa->kif == NULL) { pool_put(&pf_pooladdr_pl, newpa); error = EINVAL; break; } pfi_kif_ref(newpa->kif, PFI_KIF_REF_RULE); } else newpa->kif = NULL; if (pfi_dynaddr_setup(&newpa->addr, pca->af) || pf_tbladdr_setup(ruleset, &newpa->addr)) { pfi_dynaddr_remove(&newpa->addr); pfi_kif_unref(newpa->kif, PFI_KIF_REF_RULE); 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_kif_unref(oldpa->kif, PFI_KIF_REF_RULE); 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, 0); 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; struct pfioc_trans_e *ioe; struct pfr_table *table; int i; if (io->esize != sizeof(*ioe)) { error = ENODEV; goto fail; } #ifdef __FreeBSD__ PF_UNLOCK(); #endif ioe = (struct pfioc_trans_e *)malloc(sizeof(*ioe), M_TEMP, M_WAITOK); table = (struct pfr_table *)malloc(sizeof(*table), M_TEMP, M_WAITOK); #ifdef __FreeBSD__ PF_LOCK(); #endif for (i = 0; i < io->size; i++) { #ifdef __FreeBSD__ PF_COPYIN(io->array+i, ioe, sizeof(*ioe), error); if (error) { #else if (copyin(io->array+i, ioe, sizeof(*ioe))) { #endif free(table, M_TEMP); free(ioe, M_TEMP); error = EFAULT; goto fail; } switch (ioe->rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe->anchor[0]) { free(table, M_TEMP); free(ioe, M_TEMP); error = EINVAL; goto fail; } if ((error = pf_begin_altq(&ioe->ticket))) { free(table, M_TEMP); free(ioe, M_TEMP); 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))) { free(table, M_TEMP); free(ioe, M_TEMP); goto fail; } break; default: if ((error = pf_begin_rules(&ioe->ticket, ioe->rs_num, ioe->anchor))) { free(table, M_TEMP); free(ioe, M_TEMP); goto fail; } break; } #ifdef __FreeBSD__ PF_COPYOUT(ioe, io->array+i, sizeof(io->array[i]), error); if (error) { #else if (copyout(ioe, io->array+i, sizeof(io->array[i]))) { #endif free(table, M_TEMP); free(ioe, M_TEMP); error = EFAULT; goto fail; } } free(table, M_TEMP); free(ioe, M_TEMP); break; } case DIOCXROLLBACK: { struct pfioc_trans *io = (struct pfioc_trans *)addr; struct pfioc_trans_e *ioe; struct pfr_table *table; int i; if (io->esize != sizeof(*ioe)) { error = ENODEV; goto fail; } #ifdef __FreeBSD__ PF_UNLOCK(); #endif ioe = (struct pfioc_trans_e *)malloc(sizeof(*ioe), M_TEMP, M_WAITOK); table = (struct pfr_table *)malloc(sizeof(*table), M_TEMP, M_WAITOK); #ifdef __FreeBSD__ PF_LOCK(); #endif for (i = 0; i < io->size; i++) { #ifdef __FreeBSD__ PF_COPYIN(io->array+i, ioe, sizeof(*ioe), error); if (error) { #else if (copyin(io->array+i, ioe, sizeof(*ioe))) { #endif free(table, M_TEMP); free(ioe, M_TEMP); error = EFAULT; goto fail; } switch (ioe->rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe->anchor[0]) { free(table, M_TEMP); free(ioe, M_TEMP); error = EINVAL; goto fail; } if ((error = pf_rollback_altq(ioe->ticket))) { free(table, M_TEMP); free(ioe, M_TEMP); 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))) { free(table, M_TEMP); free(ioe, M_TEMP); goto fail; /* really bad */ } break; default: if ((error = pf_rollback_rules(ioe->ticket, ioe->rs_num, ioe->anchor))) { free(table, M_TEMP); free(ioe, M_TEMP); goto fail; /* really bad */ } break; } } free(table, M_TEMP); free(ioe, M_TEMP); break; } case DIOCXCOMMIT: { struct pfioc_trans *io = (struct pfioc_trans *)addr; struct pfioc_trans_e *ioe; struct pfr_table *table; struct pf_ruleset *rs; int i; if (io->esize != sizeof(*ioe)) { error = ENODEV; goto fail; } #ifdef __FreeBSD__ PF_UNLOCK(); #endif ioe = (struct pfioc_trans_e *)malloc(sizeof(*ioe), M_TEMP, M_WAITOK); table = (struct pfr_table *)malloc(sizeof(*table), M_TEMP, M_WAITOK); #ifdef __FreeBSD__ PF_LOCK(); #endif /* first makes sure everything will succeed */ for (i = 0; i < io->size; i++) { #ifdef __FreeBSD__ PF_COPYIN(io->array+i, ioe, sizeof(*ioe), error); if (error) { #else if (copyin(io->array+i, ioe, sizeof(*ioe))) { #endif free(table, M_TEMP); free(ioe, M_TEMP); error = EFAULT; goto fail; } switch (ioe->rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if (ioe->anchor[0]) { free(table, M_TEMP); free(ioe, M_TEMP); error = EINVAL; goto fail; } if (!altqs_inactive_open || ioe->ticket != ticket_altqs_inactive) { free(table, M_TEMP); free(ioe, M_TEMP); 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) { free(table, M_TEMP); free(ioe, M_TEMP); error = EBUSY; goto fail; } break; default: if (ioe->rs_num < 0 || ioe->rs_num >= PF_RULESET_MAX) { free(table, M_TEMP); free(ioe, M_TEMP); 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) { free(table, M_TEMP); free(ioe, M_TEMP); error = EBUSY; goto fail; } break; } } /* now do the commit - no errors should happen here */ for (i = 0; i < io->size; i++) { #ifdef __FreeBSD__ PF_COPYIN(io->array+i, ioe, sizeof(*ioe), error); if (error) { #else if (copyin(io->array+i, ioe, sizeof(*ioe))) { #endif free(table, M_TEMP); free(ioe, M_TEMP); error = EFAULT; goto fail; } switch (ioe->rs_num) { #ifdef ALTQ case PF_RULESET_ALTQ: if ((error = pf_commit_altq(ioe->ticket))) { free(table, M_TEMP); free(ioe, M_TEMP); 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))) { free(table, M_TEMP); free(ioe, M_TEMP); goto fail; /* really bad */ } break; default: if ((error = pf_commit_rules(ioe->ticket, ioe->rs_num, ioe->anchor))) { free(table, M_TEMP); free(ioe, M_TEMP); goto fail; /* really bad */ } break; } } free(table, M_TEMP); free(ioe, M_TEMP); break; } case DIOCGETSRCNODES: { struct pfioc_src_nodes *psn = (struct pfioc_src_nodes *)addr; struct pf_src_node *n, *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; } #ifdef __FreeBSD__ PF_UNLOCK(); #endif pstore = malloc(sizeof(*pstore), M_TEMP, M_WAITOK); #ifdef __FreeBSD__ PF_LOCK(); #endif p = psn->psn_src_nodes; RB_FOREACH(n, pf_src_tree, &tree_src_tracking) { int secs = time_second, diff; 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; /* adjust the connection rate estimate */ diff = secs - n->conn_rate.last; if (diff >= n->conn_rate.seconds) pstore->conn_rate.count = 0; else pstore->conn_rate.count -= n->conn_rate.count * diff / n->conn_rate.seconds; #ifdef __FreeBSD__ PF_COPYOUT(pstore, p, sizeof(*p), error); #else error = copyout(pstore, p, sizeof(*p)); #endif if (error) { free(pstore, M_TEMP); goto fail; } p++; nr++; } psn->psn_len = sizeof(struct pf_src_node) * nr; free(pstore, M_TEMP); 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(1); pf_status.src_nodes = 0; break; } case DIOCKILLSRCNODES: { struct pf_src_node *sn; struct pf_state *s; struct pfioc_src_node_kill *psnk = \ (struct pfioc_src_node_kill *) addr; int killed = 0; RB_FOREACH(sn, pf_src_tree, &tree_src_tracking) { if (PF_MATCHA(psnk->psnk_src.neg, \ &psnk->psnk_src.addr.v.a.addr, \ &psnk->psnk_src.addr.v.a.mask, \ &sn->addr, sn->af) && PF_MATCHA(psnk->psnk_dst.neg, \ &psnk->psnk_dst.addr.v.a.addr, \ &psnk->psnk_dst.addr.v.a.mask, \ &sn->raddr, sn->af)) { /* Handle state to src_node linkage */ if (sn->states != 0) { RB_FOREACH(s, pf_state_tree_id, &tree_id) { if (s->src_node == sn) s->src_node = NULL; if (s->nat_src_node == sn) s->nat_src_node = NULL; } sn->states = 0; } sn->expire = 1; killed++; } } if (killed > 0) pf_purge_expired_src_nodes(1); psnk->psnk_af = killed; break; } case DIOCSETHOSTID: { u_int32_t *hostid = (u_int32_t *)addr; if (*hostid == 0) pf_status.hostid = arc4random(); else 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_kif)) { error = ENODEV; break; } error = pfi_get_ifaces(io->pfiio_name, io->pfiio_buffer, &io->pfiio_size); break; } case DIOCSETIFFLAG: { struct pfioc_iface *io = (struct pfioc_iface *)addr; error = pfi_set_flags(io->pfiio_name, io->pfiio_flags); break; } case DIOCCLRIFFLAG: { struct pfioc_iface *io = (struct pfioc_iface *)addr; error = pfi_clear_flags(io->pfiio_name, io->pfiio_flags); break; } default: error = ENODEV; break; } fail: #ifdef __FreeBSD__ PF_UNLOCK(); if (flags & FWRITE) sx_xunlock(&pf_consistency_lock); else sx_sunlock(&pf_consistency_lock); #else splx(s); /* XXX: Lock order? */ if (flags & FWRITE) rw_exit_write(&pf_consistency_lock); else rw_exit_read(&pf_consistency_lock); #endif return (error); } #ifdef __FreeBSD__ /* * XXX - Check for version missmatch!!! */ static void pf_clear_states(void) { struct pf_state *state; RB_FOREACH(state, pf_state_tree_id, &tree_id) { state->timeout = PFTM_PURGE; #if NPFSYNC /* don't send out individual delete messages */ state->sync_flags = PFSTATE_NOSYNC; #endif pf_unlink_state(state); } #if 0 /* NPFSYNC */ /* * XXX This is called on module unload, we do not want to sync that over? */ */ pfsync_clear_states(pf_status.hostid, psk->psk_ifname); #endif } static int pf_clear_tables(void) { struct pfioc_table io; int error; bzero(&io, sizeof(io)); error = pfr_clr_tables(&io.pfrio_table, &io.pfrio_ndel, io.pfrio_flags); return (error); } static void pf_clear_srcnodes(void) { 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; } } /* * XXX - Check for version missmatch!!! */ /* * Duplicate pfctl -Fa operation to get rid of as much as we can. */ static int shutdown_pf(void) { int error = 0; u_int32_t t[5]; char nn = '\0'; pf_status.running = 0; do { if ((error = pf_begin_rules(&t[0], PF_RULESET_SCRUB, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: SCRUB\n")); break; } if ((error = pf_begin_rules(&t[1], PF_RULESET_FILTER, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: FILTER\n")); break; /* XXX: rollback? */ } if ((error = pf_begin_rules(&t[2], PF_RULESET_NAT, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: NAT\n")); break; /* XXX: rollback? */ } if ((error = pf_begin_rules(&t[3], PF_RULESET_BINAT, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: BINAT\n")); break; /* XXX: rollback? */ } if ((error = pf_begin_rules(&t[4], PF_RULESET_RDR, &nn)) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: RDR\n")); break; /* XXX: rollback? */ } /* XXX: these should always succeed here */ pf_commit_rules(t[0], PF_RULESET_SCRUB, &nn); pf_commit_rules(t[1], PF_RULESET_FILTER, &nn); pf_commit_rules(t[2], PF_RULESET_NAT, &nn); pf_commit_rules(t[3], PF_RULESET_BINAT, &nn); pf_commit_rules(t[4], PF_RULESET_RDR, &nn); if ((error = pf_clear_tables()) != 0) break; #ifdef ALTQ if ((error = pf_begin_altq(&t[0])) != 0) { DPFPRINTF(PF_DEBUG_MISC, ("shutdown_pf: ALTQ\n")); break; } pf_commit_altq(t[0]); #endif pf_clear_states(); pf_clear_srcnodes(); /* status does not use malloced mem so no need to cleanup */ /* fingerprints and interfaces have thier own cleanup code */ } while(0); return (error); } static int pf_check_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp) { /* * XXX Wed Jul 9 22:03:16 2003 UTC * OpenBSD has changed its byte ordering convention on ip_len/ip_off * in network stack. OpenBSD's network stack have converted * ip_len/ip_off to host byte order frist as FreeBSD. * Now this is not true anymore , so we should convert back to network * byte order. */ struct ip *h = NULL; int chk; if ((*m)->m_pkthdr.len >= (int)sizeof(struct ip)) { /* if m_pkthdr.len is less than ip header, pf will handle. */ h = mtod(*m, struct ip *); HTONS(h->ip_len); HTONS(h->ip_off); } chk = pf_test(PF_IN, ifp, m, NULL, inp); if (chk && *m) { m_freem(*m); *m = NULL; } if (*m != NULL) { /* pf_test can change ip header location */ h = mtod(*m, struct ip *); NTOHS(h->ip_len); NTOHS(h->ip_off); } return chk; } static int pf_check_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp) { /* * XXX Wed Jul 9 22:03:16 2003 UTC * OpenBSD has changed its byte ordering convention on ip_len/ip_off * in network stack. OpenBSD's network stack have converted * ip_len/ip_off to host byte order frist as FreeBSD. * Now this is not true anymore , so we should convert back to network * byte order. */ struct ip *h = NULL; int chk; /* We need a proper CSUM befor we start (s. OpenBSD ip_output) */ if ((*m)->m_pkthdr.csum_flags & CSUM_DELAY_DATA) { in_delayed_cksum(*m); (*m)->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA; } if ((*m)->m_pkthdr.len >= (int)sizeof(*h)) { /* if m_pkthdr.len is less than ip header, pf will handle. */ h = mtod(*m, struct ip *); HTONS(h->ip_len); HTONS(h->ip_off); } chk = pf_test(PF_OUT, ifp, m, NULL, inp); if (chk && *m) { m_freem(*m); *m = NULL; } if (*m != NULL) { /* pf_test can change ip header location */ h = mtod(*m, struct ip *); NTOHS(h->ip_len); NTOHS(h->ip_off); } return chk; } #ifdef INET6 static int pf_check6_in(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp) { /* * IPv6 is not affected by ip_len/ip_off byte order changes. */ int chk; /* * In case of loopback traffic IPv6 uses the real interface in * order to support scoped addresses. In order to support stateful * filtering we have change this to lo0 as it is the case in IPv4. */ chk = pf_test6(PF_IN, (*m)->m_flags & M_LOOP ? &loif[0] : ifp, m, NULL, inp); if (chk && *m) { m_freem(*m); *m = NULL; } return chk; } static int pf_check6_out(void *arg, struct mbuf **m, struct ifnet *ifp, int dir, struct inpcb *inp) { /* * IPv6 does not affected ip_len/ip_off byte order changes. */ int chk; /* We need a proper CSUM befor we start (s. OpenBSD ip_output) */ if ((*m)->m_pkthdr.csum_flags & CSUM_DELAY_DATA) { in_delayed_cksum(*m); (*m)->m_pkthdr.csum_flags &= ~CSUM_DELAY_DATA; } chk = pf_test6(PF_OUT, ifp, m, NULL, inp); if (chk && *m) { m_freem(*m); *m = NULL; } return chk; } #endif /* INET6 */ static int hook_pf(void) { struct pfil_head *pfh_inet; #ifdef INET6 struct pfil_head *pfh_inet6; #endif PF_ASSERT(MA_NOTOWNED); if (pf_pfil_hooked) return (0); pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET); if (pfh_inet == NULL) return (ESRCH); /* XXX */ pfil_add_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet); pfil_add_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet); #ifdef INET6 pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6); if (pfh_inet6 == NULL) { pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet); pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet); return (ESRCH); /* XXX */ } pfil_add_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet6); pfil_add_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet6); #endif pf_pfil_hooked = 1; return (0); } static int dehook_pf(void) { struct pfil_head *pfh_inet; #ifdef INET6 struct pfil_head *pfh_inet6; #endif PF_ASSERT(MA_NOTOWNED); if (pf_pfil_hooked == 0) return (0); pfh_inet = pfil_head_get(PFIL_TYPE_AF, AF_INET); if (pfh_inet == NULL) return (ESRCH); /* XXX */ pfil_remove_hook(pf_check_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet); pfil_remove_hook(pf_check_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet); #ifdef INET6 pfh_inet6 = pfil_head_get(PFIL_TYPE_AF, AF_INET6); if (pfh_inet6 == NULL) return (ESRCH); /* XXX */ pfil_remove_hook(pf_check6_in, NULL, PFIL_IN | PFIL_WAITOK, pfh_inet6); pfil_remove_hook(pf_check6_out, NULL, PFIL_OUT | PFIL_WAITOK, pfh_inet6); #endif pf_pfil_hooked = 0; return (0); } static int pf_load(void) { init_zone_var(); init_pf_mutex(); pf_dev = make_dev(&pf_cdevsw, 0, 0, 0, 0600, PF_NAME); if (pfattach() < 0) { destroy_dev(pf_dev); destroy_pf_mutex(); return (ENOMEM); } return (0); } static int pf_unload(void) { int error = 0; PF_LOCK(); pf_status.running = 0; PF_UNLOCK(); error = dehook_pf(); if (error) { /* * Should not happen! * XXX Due to error code ESRCH, kldunload will show * a message like 'No such process'. */ printf("%s : pfil unregisteration fail\n", __FUNCTION__); return error; } PF_LOCK(); shutdown_pf(); pf_end_threads = 1; while (pf_end_threads < 2) { wakeup_one(pf_purge_thread); msleep(pf_purge_thread, &pf_task_mtx, 0, "pftmo", hz); } /* pfi_cleanup(); */ pf_osfp_flush(); pf_osfp_cleanup(); cleanup_pf_zone(); PF_UNLOCK(); destroy_dev(pf_dev); destroy_pf_mutex(); return error; } static int pf_modevent(module_t mod, int type, void *data) { int error = 0; switch(type) { case MOD_LOAD: error = pf_load(); break; case MOD_UNLOAD: error = pf_unload(); break; default: error = EINVAL; break; } return error; } static moduledata_t pf_mod = { "pf", pf_modevent, 0 }; DECLARE_MODULE(pf, pf_mod, SI_SUB_PROTO_IFATTACHDOMAIN, SI_ORDER_FIRST); MODULE_VERSION(pf, PF_MODVER); #endif /* __FreeBSD__ */