/* $OpenBSD: iked.h,v 1.230 2024/03/02 16:16:07 tobhe Exp $ */ /* * Copyright (c) 2019 Tobias Heider * Copyright (c) 2010-2013 Reyk Floeter * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include "types.h" #include "dh.h" #define MAXIMUM(a,b) (((a)>(b))?(a):(b)) #define MINIMUM(a,b) (((a)<(b))?(a):(b)) #define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) #ifndef IKED_H #define IKED_H /* * Common IKEv1/IKEv2 header */ struct ike_header { uint64_t ike_ispi; /* Initiator cookie */ uint64_t ike_rspi; /* Responder cookie */ uint8_t ike_nextpayload; /* Next payload type */ uint8_t ike_version; /* Major/Minor version number */ uint8_t ike_exchange; /* Exchange type */ uint8_t ike_flags; /* Message options */ uint32_t ike_msgid; /* Message identifier */ uint32_t ike_length; /* Total message length */ } __packed; /* * Common daemon infrastructure, local imsg etc. */ struct imsgev { struct imsgbuf ibuf; void (*handler)(int, short, void *); struct event ev; struct privsep_proc *proc; void *data; short events; const char *name; }; #define IMSG_SIZE_CHECK(imsg, p) do { \ if (IMSG_DATA_SIZE(imsg) < sizeof(*p)) \ fatalx("bad length imsg received"); \ } while (0) #define IMSG_DATA_SIZE(imsg) ((imsg)->hdr.len - IMSG_HEADER_SIZE) #define IKED_ADDR_EQ(_a, _b) \ ((_a)->addr_mask == (_b)->addr_mask && \ sockaddr_cmp((struct sockaddr *)&(_a)->addr, \ (struct sockaddr *)&(_b)->addr, (_a)->addr_mask) == 0) #define IKED_ADDR_NEQ(_a, _b) \ ((_a)->addr_mask != (_b)->addr_mask || \ sockaddr_cmp((struct sockaddr *)&(_a)->addr, \ (struct sockaddr *)&(_b)->addr, (_a)->addr_mask) != 0) /* initially control.h */ struct control_sock { const char *cs_name; struct event cs_ev; struct event cs_evt; int cs_fd; int cs_restricted; void *cs_env; }; struct ctl_conn { TAILQ_ENTRY(ctl_conn) entry; uint8_t flags; #define CTL_CONN_NOTIFY 0x01 struct imsgev iev; uint32_t peerid; }; TAILQ_HEAD(ctl_connlist, ctl_conn); extern enum privsep_procid privsep_process; /* * Runtime structures */ struct iked_timer { struct event tmr_ev; struct iked *tmr_env; void (*tmr_cb)(struct iked *, void *); void *tmr_cbarg; }; struct iked_spi { uint64_t spi; uint8_t spi_size; uint8_t spi_protoid; }; struct iked_proposal { uint8_t prop_id; uint8_t prop_protoid; struct iked_spi prop_localspi; struct iked_spi prop_peerspi; struct iked_transform *prop_xforms; unsigned int prop_nxforms; TAILQ_ENTRY(iked_proposal) prop_entry; }; TAILQ_HEAD(iked_proposals, iked_proposal); struct iked_addr { int addr_af; struct sockaddr_storage addr; uint8_t addr_mask; int addr_net; in_port_t addr_port; }; struct iked_ts { struct iked_addr ts_addr; uint8_t ts_ipproto; TAILQ_ENTRY(iked_ts) ts_entry; }; TAILQ_HEAD(iked_tss, iked_ts); struct iked_flow { struct iked_addr flow_src; struct iked_addr flow_dst; unsigned int flow_dir; /* in/out */ int flow_rdomain; struct iked_addr flow_prenat; int flow_fixed; unsigned int flow_loaded; /* pfkey done */ uint8_t flow_saproto; uint8_t flow_ipproto; struct iked_addr *flow_local; /* outer source */ struct iked_addr *flow_peer; /* outer dest */ struct iked_sa *flow_ikesa; /* parent SA */ RB_ENTRY(iked_flow) flow_node; TAILQ_ENTRY(iked_flow) flow_entry; }; RB_HEAD(iked_flows, iked_flow); TAILQ_HEAD(iked_saflows, iked_flow); struct iked_childsa { uint8_t csa_saproto; /* IPsec protocol */ unsigned int csa_dir; /* in/out */ uint64_t csa_peerspi; /* peer relation */ uint8_t csa_loaded; /* pfkey done */ uint8_t csa_rekey; /* will be deleted */ uint8_t csa_allocated; /* from the kernel */ uint8_t csa_persistent;/* do not rekey */ uint8_t csa_esn; /* use ESN */ uint8_t csa_transport; /* transport mode */ struct iked_spi csa_spi; struct ibuf *csa_encrkey; /* encryption key */ uint16_t csa_encrid; /* encryption xform id */ struct ibuf *csa_integrkey; /* auth key */ uint16_t csa_integrid; /* auth xform id */ struct iked_addr *csa_local; /* outer source */ struct iked_addr *csa_peer; /* outer dest */ struct iked_sa *csa_ikesa; /* parent SA */ struct iked_childsa *csa_peersa; /* peer */ struct iked_childsa *csa_bundled; /* IPCOMP */ uint16_t csa_pfsgrpid; /* pfs group id */ RB_ENTRY(iked_childsa) csa_node; TAILQ_ENTRY(iked_childsa) csa_entry; }; RB_HEAD(iked_activesas, iked_childsa); TAILQ_HEAD(iked_childsas, iked_childsa); struct iked_static_id { uint8_t id_type; uint8_t id_length; uint8_t id_offset; uint8_t id_data[IKED_ID_SIZE]; }; struct iked_auth { uint8_t auth_method; uint8_t auth_eap; /* optional EAP */ uint8_t auth_length; /* zero if EAP */ uint8_t auth_data[IKED_PSK_SIZE]; }; struct iked_cfg { uint8_t cfg_action; uint16_t cfg_type; union { struct iked_addr address; } cfg; }; TAILQ_HEAD(iked_sapeers, iked_sa); struct iked_lifetime { uint64_t lt_bytes; uint64_t lt_seconds; }; struct iked_policy { unsigned int pol_id; char pol_name[IKED_ID_SIZE]; unsigned int pol_iface; #define IKED_SKIP_FLAGS 0 #define IKED_SKIP_AF 1 #define IKED_SKIP_SRC_ADDR 2 #define IKED_SKIP_DST_ADDR 3 #define IKED_SKIP_COUNT 4 struct iked_policy *pol_skip[IKED_SKIP_COUNT]; uint8_t pol_flags; #define IKED_POLICY_PASSIVE 0x00 #define IKED_POLICY_DEFAULT 0x01 #define IKED_POLICY_ACTIVE 0x02 #define IKED_POLICY_REFCNT 0x04 #define IKED_POLICY_QUICK 0x08 #define IKED_POLICY_SKIP 0x10 #define IKED_POLICY_IPCOMP 0x20 #define IKED_POLICY_TRANSPORT 0x40 #define IKED_POLICY_ROUTING 0x80 int pol_refcnt; uint8_t pol_certreqtype; int pol_af; int pol_rdomain; uint8_t pol_saproto; unsigned int pol_ipproto[IKED_IPPROTO_MAX]; unsigned int pol_nipproto; struct iked_addr pol_peer; struct iked_static_id pol_peerid; uint32_t pol_peerdh; struct iked_addr pol_local; struct iked_static_id pol_localid; struct iked_auth pol_auth; char pol_tag[IKED_TAG_SIZE]; unsigned int pol_tap; struct iked_proposals pol_proposals; size_t pol_nproposals; struct iked_flows pol_flows; size_t pol_nflows; struct iked_tss pol_tssrc; /* Traffic Selectors Initiator*/ size_t pol_tssrc_count; struct iked_tss pol_tsdst; /* Traffic Selectors Responder*/ size_t pol_tsdst_count; struct iked_cfg pol_cfg[IKED_CFG_MAX]; unsigned int pol_ncfg; uint32_t pol_rekey; /* ike SA lifetime */ struct iked_lifetime pol_lifetime; /* child SA lifetime */ struct iked_sapeers pol_sapeers; TAILQ_ENTRY(iked_policy) pol_entry; }; TAILQ_HEAD(iked_policies, iked_policy); struct iked_hash { uint8_t hash_type; /* PRF or INTEGR */ uint16_t hash_id; /* IKE PRF/INTEGR hash id */ const void *hash_priv; /* Identifying the hash alg */ void *hash_ctx; /* Context of the current invocation */ int hash_fixedkey; /* Requires fixed key length */ struct ibuf *hash_key; /* MAC key derived from key seed */ size_t hash_length; /* Output length */ size_t hash_trunc; /* Truncate the output length */ struct iked_hash *hash_prf; /* PRF pointer */ int hash_isaead; }; struct iked_cipher { uint8_t encr_type; /* ENCR */ uint16_t encr_id; /* IKE ENCR hash id */ const void *encr_priv; /* Identifying the hash alg */ void *encr_ctx; /* Context of the current invocation */ int encr_fixedkey; /* Requires fixed key length */ struct ibuf *encr_key; /* MAC key derived from key seed */ struct ibuf *encr_iv; /* Initialization Vector */ uint64_t encr_civ; /* Counter IV for GCM */ size_t encr_ivlength; /* IV length */ size_t encr_length; /* Block length */ size_t encr_saltlength; /* IV salt length */ uint16_t encr_authid; /* ID of associated authentication */ }; struct iked_dsa { uint8_t dsa_method; /* AUTH method */ const void *dsa_priv; /* PRF or signature hash function */ void *dsa_ctx; /* PRF or signature hash ctx */ struct ibuf *dsa_keydata; /* public, private or shared key */ void *dsa_key; /* parsed public or private key */ int dsa_hmac; /* HMAC or public/private key */ int dsa_sign; /* Sign or verify operation */ uint32_t dsa_flags; /* State flags */ }; struct iked_id { uint8_t id_type; uint8_t id_offset; struct ibuf *id_buf; }; #define IKED_REQ_CERT 0x0001 /* get local certificate (if required) */ #define IKED_REQ_CERTVALID 0x0002 /* validated the peer cert */ #define IKED_REQ_CERTREQ 0x0004 /* CERTREQ has been received */ #define IKED_REQ_AUTH 0x0008 /* AUTH payload */ #define IKED_REQ_AUTHVALID 0x0010 /* AUTH payload has been verified */ #define IKED_REQ_SA 0x0020 /* SA available */ #define IKED_REQ_EAPVALID 0x0040 /* EAP payload has been verified */ #define IKED_REQ_CHILDSA 0x0080 /* Child SA initiated */ #define IKED_REQ_INF 0x0100 /* Informational exchange initiated */ #define IKED_REQ_BITS \ "\20\01CERT\02CERTVALID\03CERTREQ\04AUTH\05AUTHVALID\06SA\07EAPVALID" \ "\10CHILDSA\11INF" TAILQ_HEAD(iked_msgqueue, iked_msg_retransmit); TAILQ_HEAD(iked_msg_fragqueue, iked_message); struct iked_sahdr { uint64_t sh_ispi; /* Initiator SPI */ uint64_t sh_rspi; /* Responder SPI */ unsigned int sh_initiator; /* Is initiator? */ } __packed; struct iked_kex { struct ibuf *kex_inonce; /* Ni */ struct ibuf *kex_rnonce; /* Nr */ struct dh_group *kex_dhgroup; /* DH group */ struct ibuf *kex_dhiexchange; struct ibuf *kex_dhrexchange; struct ibuf *kex_dhpeer; /* pointer to i or r */ }; struct iked_frag_entry { uint8_t *frag_data; size_t frag_size; }; struct iked_frag { struct iked_frag_entry **frag_arr; /* list of fragment buffers */ size_t frag_count; /* number of fragments received */ #define IKED_FRAG_TOTAL_MAX 111 /* upper limit (64kB / 576B) */ size_t frag_total; /* total numbe of fragments */ size_t frag_total_size; uint8_t frag_nextpayload; }; struct iked_ipcomp { uint16_t ic_cpi_out; /* outgoing CPI */ uint16_t ic_cpi_in; /* incoming CPI */ uint8_t ic_transform; /* transform */ }; struct iked_sa { struct iked_sahdr sa_hdr; uint32_t sa_msgid; /* Last request rcvd */ int sa_msgid_set; /* msgid initialized */ uint32_t sa_msgid_current; /* Current requested rcvd */ uint32_t sa_reqid; /* Next request sent */ int sa_type; #define IKED_SATYPE_LOOKUP 0 /* Used for lookup */ #define IKED_SATYPE_LOCAL 1 /* Local SA */ struct iked_addr sa_peer; struct iked_addr sa_peer_loaded;/* MOBIKE */ struct iked_addr sa_local; int sa_fd; struct iked_frag sa_fragments; int sa_natt; /* for IKE messages */ int sa_udpencap; /* for pfkey */ int sa_usekeepalive;/* NAT-T keepalive */ int sa_state; unsigned int sa_stateflags; unsigned int sa_stateinit; /* SA_INIT */ unsigned int sa_statevalid; /* IKE_AUTH */ int sa_cp; /* XXX */ struct iked_addr *sa_cp_addr; /* requested address */ struct iked_addr *sa_cp_addr6; /* requested address */ struct iked_addr *sa_cp_dns; /* requested dns */ struct iked_policy *sa_policy; struct timeval sa_timecreated; struct timeval sa_timeused; char *sa_tag; const char *sa_reason; /* reason for close */ struct iked_kex sa_kex; /* XXX compat defines until everything is converted */ #define sa_inonce sa_kex.kex_inonce #define sa_rnonce sa_kex.kex_rnonce #define sa_dhgroup sa_kex.kex_dhgroup #define sa_dhiexchange sa_kex.kex_dhiexchange #define sa_dhrexchange sa_kex.kex_dhrexchange #define sa_dhpeer sa_kex.kex_dhpeer struct iked_hash *sa_prf; /* PRF alg */ struct iked_hash *sa_integr; /* integrity alg */ struct iked_cipher *sa_encr; /* encryption alg */ struct ibuf *sa_key_d; /* SK_d */ struct ibuf *sa_key_iauth; /* SK_ai */ struct ibuf *sa_key_rauth; /* SK_ar */ struct ibuf *sa_key_iencr; /* SK_ei */ struct ibuf *sa_key_rencr; /* SK_er */ struct ibuf *sa_key_iprf; /* SK_pi */ struct ibuf *sa_key_rprf; /* SK_pr */ struct ibuf *sa_1stmsg; /* for initiator AUTH */ struct ibuf *sa_2ndmsg; /* for responder AUTH */ struct iked_id sa_localauth; /* local AUTH message */ struct iked_id sa_peerauth; /* peer AUTH message */ int sa_sigsha2; /* use SHA2 for signatures */ #define IKED_SCERT_MAX 3 /* max # of supplemental cert payloads */ struct iked_id sa_iid; /* initiator id */ struct iked_id sa_rid; /* responder id */ struct iked_id sa_icert; /* initiator cert */ struct iked_id sa_rcert; /* responder cert */ struct iked_id sa_scert[IKED_SCERT_MAX]; /* supplemental certs */ #define IKESA_SRCID(x) ((x)->sa_hdr.sh_initiator ? &(x)->sa_iid : &(x)->sa_rid) #define IKESA_DSTID(x) ((x)->sa_hdr.sh_initiator ? &(x)->sa_rid : &(x)->sa_iid) char *sa_eapid; /* EAP identity */ struct iked_id sa_eap; /* EAP challenge */ struct ibuf *sa_eapmsk; /* EAK session key */ struct iked_proposals sa_proposals; /* SA proposals */ struct iked_childsas sa_childsas; /* IPsec Child SAs */ struct iked_saflows sa_flows; /* IPsec flows */ struct iked_sa *sa_nexti; /* initiated IKE SA */ struct iked_sa *sa_previ; /* matching back pointer */ struct iked_sa *sa_nextr; /* simultaneous rekey */ struct iked_sa *sa_prevr; /* matching back pointer */ uint64_t sa_rekeyspi; /* peerspi CSA rekey */ struct ibuf *sa_simult; /* simultaneous rekey */ struct iked_ipcomp sa_ipcompi; /* IPcomp initator */ struct iked_ipcomp sa_ipcompr; /* IPcomp responder */ int sa_mobike; /* MOBIKE */ int sa_frag; /* fragmentation */ int sa_use_transport_mode; /* peer requested */ int sa_used_transport_mode; /* we enabled */ struct iked_timer sa_timer; /* SA timeouts */ #define IKED_IKE_SA_EXCHANGE_TIMEOUT 300 /* 5 minutes */ #define IKED_IKE_SA_REKEY_TIMEOUT 120 /* 2 minutes */ #define IKED_IKE_SA_DELETE_TIMEOUT 120 /* 2 minutes */ #define IKED_IKE_SA_ALIVE_TIMEOUT 60 /* 1 minute */ struct iked_timer sa_keepalive; /* keepalive timer */ #define IKED_IKE_SA_KEEPALIVE_TIMEOUT 20 struct iked_timer sa_rekey; /* rekey timeout */ int sa_tmpfail; struct iked_msgqueue sa_requests; /* request queue */ #define IKED_RETRANSMIT_TIMEOUT 2 /* 2 seconds */ struct iked_msgqueue sa_responses; /* response queue */ #define IKED_RESPONSE_TIMEOUT 120 /* 2 minutes */ TAILQ_ENTRY(iked_sa) sa_peer_entry; RB_ENTRY(iked_sa) sa_entry; /* all SAs */ RB_ENTRY(iked_sa) sa_dstid_entry; /* SAs by DSTID */ int sa_dstid_entry_valid; /* sa_dstid_entry valid */ struct iked_addr *sa_addrpool; /* address from pool */ RB_ENTRY(iked_sa) sa_addrpool_entry; /* pool entries */ struct iked_addr *sa_addrpool6; /* address from pool */ RB_ENTRY(iked_sa) sa_addrpool6_entry; /* pool entries */ time_t sa_last_recvd; #define IKED_IKE_SA_LAST_RECVD_TIMEOUT 300 /* 5 minutes */ }; RB_HEAD(iked_sas, iked_sa); RB_HEAD(iked_dstid_sas, iked_sa); RB_HEAD(iked_addrpool, iked_sa); RB_HEAD(iked_addrpool6, iked_sa); /* stats */ struct iked_stats { uint64_t ikes_sa_created; uint64_t ikes_sa_established_total; uint64_t ikes_sa_established_current; /* gauge */ uint64_t ikes_sa_established_failures; uint64_t ikes_sa_proposals_negotiate_failures; uint64_t ikes_sa_rekeyed; uint64_t ikes_sa_removed; uint64_t ikes_csa_created; uint64_t ikes_csa_removed; uint64_t ikes_msg_sent; uint64_t ikes_msg_send_failures; uint64_t ikes_msg_rcvd; uint64_t ikes_msg_rcvd_busy; uint64_t ikes_msg_rcvd_dropped; uint64_t ikes_retransmit_request; uint64_t ikes_retransmit_response; uint64_t ikes_retransmit_limit; uint64_t ikes_frag_sent; uint64_t ikes_frag_send_failures; uint64_t ikes_frag_rcvd; uint64_t ikes_frag_rcvd_drop; uint64_t ikes_frag_reass_ok; uint64_t ikes_frag_reass_drop; uint64_t ikes_update_addresses_sent; uint64_t ikes_dpd_sent; uint64_t ikes_keepalive_sent; }; #define ikestat_add(env, c, n) do { env->sc_stats.c += (n); } while(0) #define ikestat_inc(env, c) ikestat_add(env, c, 1) #define ikestat_dec(env, c) ikestat_add(env, c, -1) struct iked_certreq { struct ibuf *cr_data; uint8_t cr_type; SIMPLEQ_ENTRY(iked_certreq) cr_entry; }; SIMPLEQ_HEAD(iked_certreqs, iked_certreq); #define EAP_STATE_IDENTITY (1) #define EAP_STATE_MSCHAPV2_CHALLENGE (2) #define EAP_STATE_MSCHAPV2_SUCCESS (3) #define EAP_STATE_SUCCESS (4) struct eap_msg { char *eam_identity; char *eam_user; int eam_type; uint8_t eam_id; uint8_t eam_msrid; int eam_success; int eam_found; int eam_response; uint8_t eam_challenge[16]; uint8_t eam_ntresponse[24]; uint32_t eam_state; }; struct iked_message { struct ibuf *msg_data; size_t msg_offset; struct sockaddr_storage msg_local; socklen_t msg_locallen; struct sockaddr_storage msg_peer; socklen_t msg_peerlen; struct iked_socket *msg_sock; int msg_fd; int msg_response; int msg_responded; int msg_valid; int msg_natt; int msg_natt_rcvd; int msg_nat_detected; int msg_error; int msg_e; struct iked_message *msg_parent; /* Associated policy and SA */ struct iked_policy *msg_policy; struct iked_sa *msg_sa; uint32_t msg_msgid; uint8_t msg_exchange; /* Parsed information */ struct iked_proposals msg_proposals; struct iked_certreqs msg_certreqs; struct iked_spi msg_rekey; struct ibuf *msg_nonce; /* dh NONCE */ uint16_t msg_dhgroup; /* dh group */ struct ibuf *msg_ke; /* dh key exchange */ struct iked_id msg_auth; /* AUTH payload */ struct iked_id msg_peerid; struct iked_id msg_localid; struct iked_id msg_cert; struct iked_id msg_scert[IKED_SCERT_MAX]; /* supplemental certs */ struct ibuf *msg_cookie; uint16_t msg_group; uint16_t msg_cpi; uint8_t msg_transform; uint16_t msg_flags; struct eap_msg msg_eap; size_t msg_del_spisize; size_t msg_del_cnt; struct ibuf *msg_del_buf; int msg_del_protoid; int msg_cp; struct iked_addr *msg_cp_addr; /* requested address */ struct iked_addr *msg_cp_addr6; /* requested address */ struct iked_addr *msg_cp_dns; /* requested dns */ uint16_t msg_frag_num; /* MOBIKE */ int msg_update_sa_addresses; struct ibuf *msg_cookie2; /* Parse stack */ struct iked_proposal *msg_prop; uint16_t msg_attrlength; /* Retransmit queue */ TAILQ_ENTRY(iked_message) msg_entry; }; struct iked_msg_retransmit { struct iked_msg_fragqueue mrt_frags; TAILQ_ENTRY(iked_msg_retransmit) mrt_entry; struct iked_timer mrt_timer; int mrt_tries; #define IKED_RETRANSMIT_TRIES 5 /* try 5 times */ }; #define IKED_MSG_NAT_SRC_IP 0x01 #define IKED_MSG_NAT_DST_IP 0x02 #define IKED_MSG_FLAGS_FRAGMENTATION 0x0001 #define IKED_MSG_FLAGS_MOBIKE 0x0002 #define IKED_MSG_FLAGS_SIGSHA2 0x0004 #define IKED_MSG_FLAGS_CHILD_SA_NOT_FOUND 0x0008 #define IKED_MSG_FLAGS_NO_ADDITIONAL_SAS 0x0010 #define IKED_MSG_FLAGS_AUTHENTICATION_FAILED 0x0020 #define IKED_MSG_FLAGS_INVALID_KE 0x0040 #define IKED_MSG_FLAGS_IPCOMP_SUPPORTED 0x0080 #define IKED_MSG_FLAGS_USE_TRANSPORT 0x0100 #define IKED_MSG_FLAGS_TEMPORARY_FAILURE 0x0200 #define IKED_MSG_FLAGS_NO_PROPOSAL_CHOSEN 0x0400 struct iked_user { char usr_name[LOGIN_NAME_MAX]; char usr_pass[IKED_PASSWORD_SIZE]; RB_ENTRY(iked_user) usr_entry; }; RB_HEAD(iked_users, iked_user); struct privsep_pipes { int *pp_pipes[PROC_MAX]; }; struct privsep { struct privsep_pipes *ps_pipes[PROC_MAX]; struct privsep_pipes *ps_pp; struct imsgev *ps_ievs[PROC_MAX]; const char *ps_title[PROC_MAX]; pid_t ps_pid[PROC_MAX]; struct passwd *ps_pw; int ps_noaction; struct control_sock ps_csock; unsigned int ps_instances[PROC_MAX]; unsigned int ps_ninstances; unsigned int ps_instance; /* Event and signal handlers */ struct event ps_evsigint; struct event ps_evsigterm; struct event ps_evsigchld; struct event ps_evsighup; struct event ps_evsigpipe; struct event ps_evsigusr1; struct iked *ps_env; unsigned int ps_connecting; void (*ps_connected)(struct privsep *); }; struct privsep_proc { const char *p_title; enum privsep_procid p_id; int (*p_cb)(int, struct privsep_proc *, struct imsg *); void (*p_init)(struct privsep *, struct privsep_proc *); const char *p_chroot; struct passwd *p_pw; struct privsep *p_ps; void (*p_shutdown)(void); }; struct privsep_fd { enum privsep_procid pf_procid; unsigned int pf_instance; }; #define PROC_PARENT_SOCK_FILENO 3 #define PROC_MAX_INSTANCES 32 struct iked_ocsp_entry { TAILQ_ENTRY(iked_ocsp_entry) ioe_entry; /* next request */ void *ioe_ocsp; /* private ocsp request data */ }; TAILQ_HEAD(iked_ocsp_requests, iked_ocsp_entry); /* * Daemon configuration */ enum natt_mode { NATT_DEFAULT, /* send/recv with both :500 and NAT-T port */ NATT_DISABLE, /* send/recv with only :500 */ NATT_FORCE, /* send/recv with only NAT-T port */ }; struct iked_static { uint64_t st_alive_timeout; int st_cert_partial_chain; int st_enforcesingleikesa; uint8_t st_frag; /* fragmentation */ uint8_t st_mobike; /* MOBIKE */ in_port_t st_nattport; int st_stickyaddress; /* addr per DSTID */ int st_vendorid; }; struct iked { char sc_conffile[PATH_MAX]; uint32_t sc_opts; enum natt_mode sc_nattmode; uint8_t sc_passive; uint8_t sc_decoupled; struct iked_static sc_static; #define sc_alive_timeout sc_static.st_alive_timeout #define sc_cert_partial_chain sc_static.st_cert_partial_chain #define sc_enforcesingleikesa sc_static.st_enforcesingleikesa #define sc_frag sc_static.st_frag #define sc_mobike sc_static.st_mobike #define sc_nattport sc_static.st_nattport #define sc_stickyaddress sc_static.st_stickyaddress #define sc_vendorid sc_static.st_vendorid struct iked_policies sc_policies; struct iked_policy *sc_defaultcon; struct iked_sas sc_sas; struct iked_dstid_sas sc_dstid_sas; struct iked_activesas sc_activesas; struct iked_flows sc_activeflows; struct iked_users sc_users; struct iked_stats sc_stats; void *sc_priv; /* per-process */ int sc_pfkey; /* ike process */ struct event sc_pfkeyev; struct event sc_routeev; uint8_t sc_certreqtype; struct ibuf *sc_certreq; void *sc_vroute; struct iked_socket *sc_sock4[2]; struct iked_socket *sc_sock6[2]; struct iked_timer sc_inittmr; #define IKED_INITIATOR_INITIAL 2 #define IKED_INITIATOR_INTERVAL 60 struct privsep sc_ps; struct iked_ocsp_requests sc_ocsp; char *sc_ocsp_url; long sc_ocsp_tolerate; long sc_ocsp_maxage; struct iked_addrpool sc_addrpool; struct iked_addrpool6 sc_addrpool6; }; struct iked_socket { int sock_fd; struct event sock_ev; struct iked *sock_env; struct sockaddr_storage sock_addr; }; struct ipsec_xf { const char *name; unsigned int id; unsigned int length; unsigned int keylength; unsigned int nonce; unsigned int noauth; }; struct ipsec_transforms { const struct ipsec_xf **authxf; unsigned int nauthxf; const struct ipsec_xf **prfxf; unsigned int nprfxf; const struct ipsec_xf **encxf; unsigned int nencxf; const struct ipsec_xf **groupxf; unsigned int ngroupxf; const struct ipsec_xf **esnxf; unsigned int nesnxf; }; struct ipsec_mode { struct ipsec_transforms **xfs; unsigned int nxfs; }; /* iked.c */ void parent_reload(struct iked *, int, const char *); extern struct iked *iked_env; /* control.c */ void control(struct privsep *, struct privsep_proc *); int control_init(struct privsep *, struct control_sock *); int control_listen(struct control_sock *); /* config.c */ struct iked_policy * config_new_policy(struct iked *); void config_free_kex(struct iked_kex *); void config_free_fragments(struct iked_frag *); void config_free_sa(struct iked *, struct iked_sa *); struct iked_sa * config_new_sa(struct iked *, int); struct iked_user * config_new_user(struct iked *, struct iked_user *); uint64_t config_getspi(void); struct iked_transform * config_findtransform(struct iked_proposals *, uint8_t, unsigned int); struct iked_transform * config_findtransform_ext(struct iked_proposals *, uint8_t,int, unsigned int); void config_free_policy(struct iked *, struct iked_policy *); struct iked_proposal * config_add_proposal(struct iked_proposals *, unsigned int, unsigned int); void config_free_proposal(struct iked_proposals *, struct iked_proposal *); void config_free_proposals(struct iked_proposals *, unsigned int); void config_free_flows(struct iked *, struct iked_flows *); void config_free_childsas(struct iked *, struct iked_childsas *, struct iked_spi *, struct iked_spi *); int config_add_transform(struct iked_proposal *, unsigned int, unsigned int, unsigned int, unsigned int); int config_setcoupled(struct iked *, unsigned int); int config_getcoupled(struct iked *, unsigned int); int config_setmode(struct iked *, unsigned int); int config_getmode(struct iked *, unsigned int); int config_setreset(struct iked *, unsigned int, enum privsep_procid); int config_getreset(struct iked *, struct imsg *); int config_doreset(struct iked *, unsigned int); int config_setpolicy(struct iked *, struct iked_policy *, enum privsep_procid); int config_getpolicy(struct iked *, struct imsg *); int config_setflow(struct iked *, struct iked_policy *, enum privsep_procid); int config_getflow(struct iked *, struct imsg *); int config_setsocket(struct iked *, struct sockaddr_storage *, in_port_t, enum privsep_procid); int config_getsocket(struct iked *env, struct imsg *, void (*cb)(int, short, void *)); void config_enablesocket(struct iked *env); int config_setpfkey(struct iked *); int config_getpfkey(struct iked *, struct imsg *); int config_setuser(struct iked *, struct iked_user *, enum privsep_procid); int config_getuser(struct iked *, struct imsg *); int config_setcompile(struct iked *, enum privsep_procid); int config_getcompile(struct iked *); int config_setocsp(struct iked *); int config_getocsp(struct iked *, struct imsg *); int config_setkeys(struct iked *); int config_getkey(struct iked *, struct imsg *); int config_setstatic(struct iked *); int config_getstatic(struct iked *, struct imsg *); /* policy.c */ void policy_init(struct iked *); int policy_lookup(struct iked *, struct iked_message *, struct iked_proposals *, struct iked_flows *, int); int policy_lookup_sa(struct iked *, struct iked_sa *); struct iked_policy * policy_test(struct iked *, struct iked_policy *); int policy_generate_ts(struct iked_policy *); void policy_calc_skip_steps(struct iked_policies *); void policy_ref(struct iked *, struct iked_policy *); void policy_unref(struct iked *, struct iked_policy *); void sa_state(struct iked *, struct iked_sa *, int); void sa_stateflags(struct iked_sa *, unsigned int); int sa_stateok(const struct iked_sa *, int); struct iked_sa * sa_new(struct iked *, uint64_t, uint64_t, unsigned int, struct iked_policy *); void sa_free(struct iked *, struct iked_sa *); void sa_free_flows(struct iked *, struct iked_saflows *); int sa_configure_iface(struct iked *, struct iked_sa *, int); int sa_address(struct iked_sa *, struct iked_addr *, struct sockaddr *); void childsa_free(struct iked_childsa *); struct iked_childsa * childsa_lookup(struct iked_sa *, uint64_t, uint8_t); void flow_free(struct iked_flow *); int flow_equal(struct iked_flow *, struct iked_flow *); struct iked_sa * sa_lookup(struct iked *, uint64_t, uint64_t, unsigned int); struct iked_user * user_lookup(struct iked *, const char *); struct iked_sa * sa_dstid_lookup(struct iked *, struct iked_sa *); struct iked_sa * sa_dstid_insert(struct iked *, struct iked_sa *); void sa_dstid_remove(struct iked *, struct iked_sa *); int proposals_negotiate(struct iked_proposals *, struct iked_proposals *, struct iked_proposals *, int, int); RB_PROTOTYPE(iked_sas, iked_sa, sa_entry, sa_cmp); RB_PROTOTYPE(iked_dstid_sas, iked_sa, sa_dstid_entry, sa_dstid_cmp); RB_PROTOTYPE(iked_addrpool, iked_sa, sa_addrpool_entry, sa_addrpool_cmp); RB_PROTOTYPE(iked_addrpool6, iked_sa, sa_addrpool6_entry, sa_addrpool6_cmp); RB_PROTOTYPE(iked_users, iked_user, user_entry, user_cmp); RB_PROTOTYPE(iked_activesas, iked_childsa, csa_node, childsa_cmp); RB_PROTOTYPE(iked_flows, iked_flow, flow_node, flow_cmp); /* crypto.c */ struct iked_hash * hash_new(uint8_t, uint16_t); struct ibuf * hash_setkey(struct iked_hash *, void *, size_t); void hash_free(struct iked_hash *); void hash_init(struct iked_hash *); void hash_update(struct iked_hash *, void *, size_t); void hash_final(struct iked_hash *, void *, size_t *); size_t hash_keylength(struct iked_hash *); size_t hash_length(struct iked_hash *); struct iked_cipher * cipher_new(uint8_t, uint16_t, uint16_t); struct ibuf * cipher_setkey(struct iked_cipher *, const void *, size_t); struct ibuf * cipher_setiv(struct iked_cipher *, const void *, size_t); int cipher_settag(struct iked_cipher *, uint8_t *, size_t); int cipher_gettag(struct iked_cipher *, uint8_t *, size_t); void cipher_free(struct iked_cipher *); int cipher_init(struct iked_cipher *, int); int cipher_init_encrypt(struct iked_cipher *); int cipher_init_decrypt(struct iked_cipher *); void cipher_aad(struct iked_cipher *, const void *, size_t, size_t *); int cipher_update(struct iked_cipher *, const void *, size_t, void *, size_t *); int cipher_final(struct iked_cipher *); size_t cipher_length(struct iked_cipher *); size_t cipher_keylength(struct iked_cipher *); size_t cipher_ivlength(struct iked_cipher *); size_t cipher_outlength(struct iked_cipher *, size_t); struct iked_dsa * dsa_new(uint8_t, struct iked_hash *, int); struct iked_dsa * dsa_sign_new(uint8_t, struct iked_hash *); struct iked_dsa * dsa_verify_new(uint8_t, struct iked_hash *); struct ibuf * dsa_setkey(struct iked_dsa *, void *, size_t, uint8_t); void dsa_free(struct iked_dsa *); int dsa_init(struct iked_dsa *, const void *, size_t); size_t dsa_prefix(struct iked_dsa *); size_t dsa_length(struct iked_dsa *); int dsa_update(struct iked_dsa *, const void *, size_t); ssize_t dsa_sign_final(struct iked_dsa *, void *, size_t); ssize_t dsa_verify_final(struct iked_dsa *, void *, size_t); /* vroute.c */ void vroute_init(struct iked *); int vroute_setaddr(struct iked *, int, struct sockaddr *, int, unsigned int); void vroute_cleanup(struct iked *); int vroute_getaddr(struct iked *, struct imsg *); int vroute_setdns(struct iked *, int, struct sockaddr *, unsigned int); int vroute_getdns(struct iked *, struct imsg *); int vroute_setaddroute(struct iked *, uint8_t, struct sockaddr *, uint8_t, struct sockaddr *); int vroute_setcloneroute(struct iked *, uint8_t, struct sockaddr *, uint8_t, struct sockaddr *); int vroute_setdelroute(struct iked *, uint8_t, struct sockaddr *, uint8_t, struct sockaddr *); int vroute_getroute(struct iked *, struct imsg *); int vroute_getcloneroute(struct iked *, struct imsg *); /* ikev2.c */ void ikev2(struct privsep *, struct privsep_proc *); void ikev2_recv(struct iked *, struct iked_message *); void ikev2_init_ike_sa(struct iked *, void *); int ikev2_policy2id(struct iked_static_id *, struct iked_id *, int); int ikev2_childsa_enable(struct iked *, struct iked_sa *); int ikev2_childsa_delete(struct iked *, struct iked_sa *, uint8_t, uint64_t, uint64_t *, int); void ikev2_ikesa_recv_delete(struct iked *, struct iked_sa *); void ikev2_ike_sa_timeout(struct iked *env, void *); void ikev2_ike_sa_setreason(struct iked_sa *, char *); void ikev2_reset_alive_timer(struct iked *); int ikev2_ike_sa_delete(struct iked *, struct iked_sa *); struct ibuf * ikev2_prfplus(struct iked_hash *, struct ibuf *, struct ibuf *, size_t); ssize_t ikev2_psk(struct iked_sa *, uint8_t *, size_t, uint8_t **); ssize_t ikev2_nat_detection(struct iked *, struct iked_message *, void *, size_t, unsigned int, int); void ikev2_enable_natt(struct iked *, struct iked_sa *, struct iked_message *, int); int ikev2_send_informational(struct iked *, struct iked_message *); int ikev2_send_ike_e(struct iked *, struct iked_sa *, struct ibuf *, uint8_t, uint8_t, int); struct ike_header * ikev2_add_header(struct ibuf *, struct iked_sa *, uint32_t, uint8_t, uint8_t, uint8_t); int ikev2_set_header(struct ike_header *, size_t); struct ikev2_payload * ikev2_add_payload(struct ibuf *); int ikev2_next_payload(struct ikev2_payload *, size_t, uint8_t); int ikev2_child_sa_acquire(struct iked *, struct iked_flow *); int ikev2_child_sa_drop(struct iked *, struct iked_spi *); int ikev2_child_sa_rekey(struct iked *, struct iked_spi *); void ikev2_disable_rekeying(struct iked *, struct iked_sa *); int ikev2_print_id(struct iked_id *, char *, size_t); int ikev2_print_static_id(struct iked_static_id *, char *, size_t); const char *ikev2_ikesa_info(uint64_t, const char *msg); #define SPI_IH(hdr) ikev2_ikesa_info(betoh64((hdr)->ike_ispi), NULL) #define SPI_SH(sh, f) ikev2_ikesa_info((sh)->sh_ispi, (f)) #define SPI_SA(sa, f) SPI_SH(&(sa)->sa_hdr, (f)) /* ikev2_msg.c */ void ikev2_msg_cb(int, short, void *); struct ibuf * ikev2_msg_init(struct iked *, struct iked_message *, struct sockaddr_storage *, socklen_t, struct sockaddr_storage *, socklen_t, int); struct iked_message * ikev2_msg_copy(struct iked *, struct iked_message *); void ikev2_msg_cleanup(struct iked *, struct iked_message *); uint32_t ikev2_msg_id(struct iked *, struct iked_sa *); struct ibuf *ikev2_msg_auth(struct iked *, struct iked_sa *, int); int ikev2_msg_authsign(struct iked *, struct iked_sa *, struct iked_auth *, struct ibuf *); int ikev2_msg_authverify(struct iked *, struct iked_sa *, struct iked_auth *, uint8_t *, size_t, struct ibuf *); int ikev2_msg_valid_ike_sa(struct iked *, struct ike_header *, struct iked_message *); int ikev2_msg_send(struct iked *, struct iked_message *); int ikev2_msg_send_encrypt(struct iked *, struct iked_sa *, struct ibuf **, uint8_t, uint8_t, int); struct ibuf *ikev2_msg_encrypt(struct iked *, struct iked_sa *, struct ibuf *, struct ibuf *); struct ibuf * ikev2_msg_decrypt(struct iked *, struct iked_sa *, struct ibuf *, struct ibuf *); int ikev2_msg_integr(struct iked *, struct iked_sa *, struct ibuf *); int ikev2_msg_frompeer(struct iked_message *); struct iked_socket * ikev2_msg_getsocket(struct iked *, int, int); int ikev2_msg_enqueue(struct iked *, struct iked_msgqueue *, struct iked_message *, int); int ikev2_msg_retransmit_response(struct iked *, struct iked_sa *, struct iked_message *, struct ike_header *); void ikev2_msg_prevail(struct iked *, struct iked_msgqueue *, struct iked_message *); void ikev2_msg_dispose(struct iked *, struct iked_msgqueue *, struct iked_msg_retransmit *); void ikev2_msg_flushqueue(struct iked *, struct iked_msgqueue *); struct iked_msg_retransmit * ikev2_msg_lookup(struct iked *, struct iked_msgqueue *, struct iked_message *, uint8_t); /* ikev2_pld.c */ int ikev2_pld_parse(struct iked *, struct ike_header *, struct iked_message *, size_t); int ikev2_pld_parse_quick(struct iked *, struct ike_header *, struct iked_message *, size_t); /* eap.c */ int eap_parse(struct iked *, const struct iked_sa *, struct iked_message*, void *, int); int eap_success(struct iked *, struct iked_sa *, int); int eap_identity_request(struct iked *, struct iked_sa *); int eap_mschap_challenge(struct iked *, struct iked_sa *, int, int, uint8_t *, size_t); int eap_mschap_success(struct iked *, struct iked_sa *, int); int eap_challenge_request(struct iked *, struct iked_sa *, int); /* pfkey.c */ int pfkey_couple(struct iked *, struct iked_sas *, int); int pfkey_flow_add(struct iked *, struct iked_flow *); int pfkey_flow_delete(struct iked *, struct iked_flow *); int pfkey_sa_init(struct iked *, struct iked_childsa *, uint32_t *); int pfkey_sa_add(struct iked *, struct iked_childsa *, struct iked_childsa *); int pfkey_sa_update_addresses(struct iked *, struct iked_childsa *); int pfkey_sa_delete(struct iked *, struct iked_childsa *); int pfkey_sa_last_used(struct iked *, struct iked_childsa *, uint64_t *); int pfkey_flush(struct iked *); int pfkey_socket(struct iked *); void pfkey_init(struct iked *, int fd); /* ca.c */ void caproc(struct privsep *, struct privsep_proc *); int ca_setreq(struct iked *, struct iked_sa *, struct iked_static_id *, uint8_t, uint8_t, uint8_t *, size_t, enum privsep_procid); int ca_setcert(struct iked *, struct iked_sahdr *, struct iked_id *, uint8_t, uint8_t *, size_t, enum privsep_procid); int ca_setauth(struct iked *, struct iked_sa *, struct ibuf *, enum privsep_procid); void ca_getkey(struct privsep *, struct iked_id *, enum imsg_type); int ca_certbundle_add(struct ibuf *, struct iked_id *); int ca_privkey_serialize(EVP_PKEY *, struct iked_id *); int ca_pubkey_serialize(EVP_PKEY *, struct iked_id *); void ca_sslerror(const char *); char *ca_asn1_name(uint8_t *, size_t); void *ca_x509_name_parse(char *); void ca_cert_info(const char *, X509 *); /* timer.c */ void timer_set(struct iked *, struct iked_timer *, void (*)(struct iked *, void *), void *); void timer_add(struct iked *, struct iked_timer *, int); void timer_del(struct iked *, struct iked_timer *); /* proc.c */ void proc_init(struct privsep *, struct privsep_proc *, unsigned int, int, int, char **, enum privsep_procid); void proc_kill(struct privsep *); void proc_connect(struct privsep *, void (*)(struct privsep *)); void proc_dispatch(int, short event, void *); void proc_run(struct privsep *, struct privsep_proc *, struct privsep_proc *, unsigned int, void (*)(struct privsep *, struct privsep_proc *, void *), void *); void imsg_event_add(struct imsgev *); int imsg_compose_event(struct imsgev *, uint16_t, uint32_t, pid_t, int, void *, uint16_t); int imsg_composev_event(struct imsgev *, uint16_t, uint32_t, pid_t, int, const struct iovec *, int); int proc_compose_imsg(struct privsep *, enum privsep_procid, int, uint16_t, uint32_t, int, void *, uint16_t); int proc_compose(struct privsep *, enum privsep_procid, uint16_t, void *, uint16_t); int proc_composev_imsg(struct privsep *, enum privsep_procid, int, uint16_t, uint32_t, int, const struct iovec *, int); int proc_composev(struct privsep *, enum privsep_procid, uint16_t, const struct iovec *, int); int proc_forward_imsg(struct privsep *, struct imsg *, enum privsep_procid, int); struct imsgbuf * proc_ibuf(struct privsep *, enum privsep_procid, int); struct imsgev * proc_iev(struct privsep *, enum privsep_procid, int); enum privsep_procid proc_getid(struct privsep_proc *, unsigned int, const char *); int proc_flush_imsg(struct privsep *, enum privsep_procid, int); /* util.c */ int socket_af(struct sockaddr *, in_port_t); in_port_t socket_getport(struct sockaddr *); int socket_setport(struct sockaddr *, in_port_t); int socket_getaddr(int, struct sockaddr_storage *); int socket_bypass(int, struct sockaddr *); int udp_bind(struct sockaddr *, in_port_t); ssize_t sendtofrom(int, void *, size_t, int, struct sockaddr *, socklen_t, struct sockaddr *, socklen_t); ssize_t recvfromto(int, void *, size_t, int, struct sockaddr *, socklen_t *, struct sockaddr *, socklen_t *); const char * print_spi(uint64_t, int); const char * print_map(unsigned int, struct iked_constmap *); void lc_idtype(char *); void print_hex(const uint8_t *, off_t, size_t); void print_hexval(const uint8_t *, off_t, size_t); void print_hexbuf(struct ibuf *); const char * print_bits(unsigned short, unsigned char *); int sockaddr_cmp(struct sockaddr *, struct sockaddr *, int); uint8_t mask2prefixlen(struct sockaddr *); uint8_t mask2prefixlen6(struct sockaddr *); struct in6_addr * prefixlen2mask6(uint8_t, uint32_t *); uint32_t prefixlen2mask(uint8_t); const char * print_addr(void *); char *get_string(uint8_t *, size_t); const char * print_proto(uint8_t); int expand_string(char *, size_t, const char *, const char *); uint8_t *string2unicode(const char *, size_t *); void print_debug(const char *, ...) __attribute__((format(printf, 1, 2))); void print_verbose(const char *, ...) __attribute__((format(printf, 1, 2))); /* imsg_util.c */ struct ibuf * ibuf_new(const void *, size_t); struct ibuf * ibuf_static(void); size_t ibuf_length(struct ibuf *); int ibuf_setsize(struct ibuf *, size_t); struct ibuf * ibuf_getdata(struct ibuf *, size_t); struct ibuf * ibuf_dup(struct ibuf *); struct ibuf * ibuf_random(size_t); /* log.c */ void log_init(int, int); void log_procinit(const char *); void log_setverbose(int); int log_getverbose(void); void log_warn(const char *, ...) __attribute__((__format__ (printf, 1, 2))); void log_warnx(const char *, ...) __attribute__((__format__ (printf, 1, 2))); void log_info(const char *, ...) __attribute__((__format__ (printf, 1, 2))); void log_debug(const char *, ...) __attribute__((__format__ (printf, 1, 2))); void logit(int, const char *, ...) __attribute__((__format__ (printf, 2, 3))); void vlog(int, const char *, va_list) __attribute__((__format__ (printf, 2, 0))); __dead void fatal(const char *, ...) __attribute__((__format__ (printf, 1, 2))); __dead void fatalx(const char *, ...) __attribute__((__format__ (printf, 1, 2))); /* ocsp.c */ int ocsp_connect(struct iked *, struct imsg *); int ocsp_receive_fd(struct iked *, struct imsg *); int ocsp_validate_cert(struct iked *, void *, size_t, struct iked_sahdr, uint8_t, X509 *); /* parse.y */ int parse_config(const char *, struct iked *); int cmdline_symset(char *); extern const struct ipsec_xf authxfs[]; extern const struct ipsec_xf prfxfs[]; extern const struct ipsec_xf *encxfs; extern const struct ipsec_xf ikeencxfs[]; extern const struct ipsec_xf ipsecencxfs[]; extern const struct ipsec_xf groupxfs[]; extern const struct ipsec_xf esnxfs[]; extern const struct ipsec_xf methodxfs[]; extern const struct ipsec_xf saxfs[]; extern const struct ipsec_xf cpxfs[]; size_t keylength_xf(unsigned int, unsigned int, unsigned int); size_t noncelength_xf(unsigned int, unsigned int); int encxf_noauth(unsigned int); /* print.c */ void print_user(struct iked_user *); void print_policy(struct iked_policy *); const char *print_xf(unsigned int, unsigned int, const struct ipsec_xf *); #endif /* IKED_H */