/* $NetBSD: remoteconf.c,v 1.26 2011/03/14 15:50:36 vanhu Exp $ */
/* Id: remoteconf.c,v 1.38 2006/05/06 15:52:44 manubsd Exp */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/queue.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include PATH_IPSEC_H
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "var.h"
#include "misc.h"
#include "vmbuf.h"
#include "plog.h"
#include "sockmisc.h"
#include "genlist.h"
#include "debug.h"
#include "isakmp_var.h"
#ifdef ENABLE_HYBRID
#include "isakmp_xauth.h"
#endif
#include "isakmp.h"
#include "ipsec_doi.h"
#include "crypto_openssl.h"
#include "oakley.h"
#include "remoteconf.h"
#include "localconf.h"
#include "grabmyaddr.h"
#include "policy.h"
#include "proposal.h"
#include "vendorid.h"
#include "gcmalloc.h"
#include "strnames.h"
#include "algorithm.h"
#include "nattraversal.h"
#include "isakmp_frag.h"
#include "handler.h"
#include "genlist.h"
#include "rsalist.h"
typedef TAILQ_HEAD(_rmtree, remoteconf) remoteconf_tailq_head_t;
static remoteconf_tailq_head_t rmtree, rmtree_save;
/*
* Script hook names and script hook paths
*/
char *script_names[SCRIPT_MAX + 1] = {
"phase1_up", "phase1_down", "phase1_dead" };
/*%%%*/
int
rmconf_match_identity(rmconf, id_p)
struct remoteconf *rmconf;
vchar_t *id_p;
{
struct ipsecdoi_id_b *id_b = (struct ipsecdoi_id_b *) id_p->v;
struct sockaddr *sa;
caddr_t sa1, sa2;
vchar_t ident;
struct idspec *id;
struct genlist_entry *gpb;
/* compare with the ID if specified. */
if (!genlist_next(rmconf->idvl_p, 0))
return 0;
for (id = genlist_next(rmconf->idvl_p, &gpb); id; id = genlist_next(0, &gpb)) {
/* No ID specified in configuration, so it is ok */
if (id->id == 0)
return 0;
/* check the type of both IDs */
if (id->idtype != doi2idtype(id_b->type))
continue; /* ID type mismatch */
/* compare defined ID with the ID sent by peer. */
switch (id->idtype) {
case IDTYPE_ASN1DN:
ident.v = id_p->v + sizeof(*id_b);
ident.l = id_p->l - sizeof(*id_b);
if (eay_cmp_asn1dn(id->id, &ident) == 0)
return 0;
break;
case IDTYPE_ADDRESS:
sa = (struct sockaddr *)id->id->v;
sa2 = (caddr_t)(id_b + 1);
switch (sa->sa_family) {
case AF_INET:
if (id_p->l - sizeof(*id_b) != sizeof(struct in_addr))
continue; /* ID value mismatch */
sa1 = (caddr_t) &((struct sockaddr_in *)sa)->sin_addr;
if (memcmp(sa1, sa2, sizeof(struct in_addr)) == 0)
return 0;
break;
#ifdef INET6
case AF_INET6:
if (id_p->l - sizeof(*id_b) != sizeof(struct in6_addr))
continue; /* ID value mismatch */
sa1 = (caddr_t) &((struct sockaddr_in6 *)sa)->sin6_addr;
if (memcmp(sa1, sa2, sizeof(struct in6_addr)) == 0)
return 0;
break;
#endif
default:
break;
}
break;
default:
if (memcmp(id->id->v, id_b + 1, id->id->l) == 0)
return 0;
break;
}
}
plog(LLV_WARNING, LOCATION, NULL, "No ID match.\n");
if (rmconf->verify_identifier)
return ISAKMP_NTYPE_INVALID_ID_INFORMATION;
return 0;
}
static int
rmconf_match_etype_and_approval(rmconf, etype, approval)
struct remoteconf *rmconf;
int etype;
struct isakmpsa *approval;
{
struct isakmpsa *p;
if (check_etypeok(rmconf, (void *) (intptr_t) etype) == 0)
return ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN;
if (approval == NULL)
return 0;
if (etype == ISAKMP_ETYPE_AGG &&
approval->dh_group != rmconf->dh_group)
return ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN;
if (checkisakmpsa(rmconf->pcheck_level, approval,
rmconf->proposal) == NULL)
return ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN;
return 0;
}
enum rmconf_match_t {
MATCH_NONE = 0,
MATCH_BASIC = 0x0000001,
MATCH_ADDRESS = 0x0000002,
MATCH_SA = 0x0000004,
MATCH_IDENTITY = 0x0000008,
MATCH_AUTH_IDENTITY = 0x0000010,
};
static int
rmconf_match_type(rmsel, rmconf)
struct rmconfselector *rmsel;
struct remoteconf *rmconf;
{
int ret = MATCH_NONE, tmp;
/* No match at all: unwanted anonymous */
if ((rmsel->flags & GETRMCONF_F_NO_ANONYMOUS) &&
rmconf->remote->sa_family == AF_UNSPEC){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: Anonymous conf.\n");
return MATCH_NONE;
}
if ((rmsel->flags & GETRMCONF_F_NO_PASSIVE) && rmconf->passive){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: passive conf.\n");
return MATCH_NONE;
}
ret |= MATCH_BASIC;
/* Check address */
if (rmsel->remote != NULL) {
if (rmconf->remote->sa_family != AF_UNSPEC) {
if (cmpsaddr(rmsel->remote, rmconf->remote) == CMPSADDR_MISMATCH){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: address mismatch.\n");
return MATCH_NONE;
}
/* Address matched */
ret |= MATCH_ADDRESS;
}
}
/* Check etype and approval */
if (rmsel->etype != ISAKMP_ETYPE_NONE) {
tmp=rmconf_match_etype_and_approval(rmconf, rmsel->etype,
rmsel->approval);
if (tmp != 0){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: etype (%d)/approval mismatch (%d).\n", rmsel->etype, tmp);
return MATCH_NONE;
}
ret |= MATCH_SA;
}
/* Check identity */
if (rmsel->identity != NULL && rmconf->verify_identifier) {
if (rmconf_match_identity(rmconf, rmsel->identity) != 0){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: identity mismatch.\n");
return MATCH_NONE;
}
ret |= MATCH_IDENTITY;
}
/* Check certificate request */
if (rmsel->certificate_request != NULL) {
if (oakley_get_certtype(rmsel->certificate_request) !=
oakley_get_certtype(rmconf->mycert)){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: cert type mismatch.\n");
return MATCH_NONE;
}
if (rmsel->certificate_request->l > 1) {
vchar_t *issuer;
issuer = eay_get_x509asn1issuername(rmconf->mycert);
if (rmsel->certificate_request->l - 1 != issuer->l ||
memcmp(rmsel->certificate_request->v + 1,
issuer->v, issuer->l) != 0) {
vfree(issuer);
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: cert issuer mismatch.\n");
return MATCH_NONE;
}
vfree(issuer);
} else {
if (!rmconf->match_empty_cr){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched: empty certificate request.\n");
return MATCH_NONE;
}
}
ret |= MATCH_AUTH_IDENTITY;
}
return ret;
}
void rmconf_selector_from_ph1(rmsel, iph1)
struct rmconfselector *rmsel;
struct ph1handle *iph1;
{
memset(rmsel, 0, sizeof(*rmsel));
rmsel->flags = 0;
rmsel->remote = iph1->remote;
rmsel->etype = iph1->etype;
rmsel->approval = iph1->approval;
rmsel->identity = iph1->id_p;
rmsel->certificate_request = iph1->cr_p;
}
int
enumrmconf(rmsel, enum_func, enum_arg)
struct rmconfselector *rmsel;
int (* enum_func)(struct remoteconf *rmconf, void *arg);
void *enum_arg;
{
struct remoteconf *p;
int ret = 0;
RACOON_TAILQ_FOREACH_REVERSE(p, &rmtree, _rmtree, chain) {
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Checking remote conf \"%s\" %s.\n", p->name,
p->remote->sa_family == AF_UNSPEC ?
"anonymous" : saddr2str(p->remote));
if (rmsel != NULL) {
if (rmconf_match_type(rmsel, p) == MATCH_NONE){
plog(LLV_DEBUG2, LOCATION, rmsel->remote,
"Not matched.\n");
continue;
}
}
plog(LLV_DEBUG2, LOCATION, NULL,
"enumrmconf: \"%s\" matches.\n", p->name);
ret = (*enum_func)(p, enum_arg);
if (ret)
break;
}
return ret;
}
struct rmconf_find_context {
struct rmconfselector sel;
struct remoteconf *rmconf;
int match_type;
int num_found;
};
static int
rmconf_find(rmconf, ctx)
struct remoteconf *rmconf;
void *ctx;
{
struct rmconf_find_context *fctx = (struct rmconf_find_context *) ctx;
int match_type;
/* First matching remote conf? */
match_type = rmconf_match_type(&fctx->sel, rmconf);
if (fctx->rmconf != NULL) {
/* More ambiguous matches are ignored. */
if (match_type < fctx->match_type)
return 0;
if (match_type == fctx->match_type) {
/* Ambiguous match */
fctx->num_found++;
return 0;
}
}
/* More exact match found */
fctx->match_type = match_type;
fctx->num_found = 1;
fctx->rmconf = rmconf;
return 0;
}
/*
* search remote configuration.
* don't use port number to search if its value is either IPSEC_PORT_ANY.
* If matching anonymous entry, then new entry is copied from anonymous entry.
* If no anonymous entry found, then return NULL.
* OUT: NULL: NG
* Other: remote configuration entry.
*/
struct remoteconf *
getrmconf(remote, flags)
struct sockaddr *remote;
int flags;
{
struct rmconf_find_context ctx;
int n = 0;
memset(&ctx, 0, sizeof(ctx));
ctx.sel.flags = flags;
ctx.sel.remote = remote;
if (enumrmconf(&ctx.sel, rmconf_find, &ctx) != 0) {
plog(LLV_ERROR, LOCATION, remote,
"multiple exact configurations.\n");
return NULL;
}
if (ctx.rmconf == NULL) {
plog(LLV_DEBUG, LOCATION, remote,
"no remote configuration found.\n");
return NULL;
}
if (ctx.num_found != 1) {
plog(LLV_DEBUG, LOCATION, remote,
"multiple non-exact configurations found.\n");
return NULL;
}
plog(LLV_DEBUG, LOCATION, remote,
"configuration \"%s\" selected.\n",
ctx.rmconf->name);
return ctx.rmconf;
}
struct remoteconf *
getrmconf_by_ph1(iph1)
struct ph1handle *iph1;
{
struct rmconf_find_context ctx;
memset(&ctx, 0, sizeof(ctx));
rmconf_selector_from_ph1(&ctx.sel, iph1);
if (loglevel >= LLV_DEBUG) {
char *idstr = NULL;
if (iph1->id_p != NULL)
idstr = ipsecdoi_id2str(iph1->id_p);
plog(LLV_DEBUG, LOCATION, iph1->remote,
"getrmconf_by_ph1: remote %s, identity %s.\n",
saddr2str(iph1->remote), idstr ? idstr : "<any>");
if (idstr)
racoon_free(idstr);
}
if (enumrmconf(&ctx.sel, rmconf_find, &ctx) != 0) {
plog(LLV_ERROR, LOCATION, iph1->remote,
"multiple exact configurations.\n");
return RMCONF_ERR_MULTIPLE;
}
if (ctx.rmconf == NULL) {
plog(LLV_DEBUG, LOCATION, iph1->remote,
"no remote configuration found\n");
return NULL;
}
if (ctx.num_found != 1) {
plog(LLV_DEBUG, LOCATION, iph1->remote,
"multiple non-exact configurations found.\n");
return RMCONF_ERR_MULTIPLE;
}
plog(LLV_DEBUG, LOCATION, iph1->remote,
"configuration \"%s\" selected.\n",
ctx.rmconf->name);
return ctx.rmconf;
}
struct remoteconf *
getrmconf_by_name(name)
const char *name;
{
struct remoteconf *p;
plog(LLV_DEBUG, LOCATION, NULL,
"getrmconf_by_name: remote \"%s\".\n",
name);
RACOON_TAILQ_FOREACH_REVERSE(p, &rmtree, _rmtree, chain) {
if (p->name == NULL)
continue;
if (strcmp(name, p->name) == 0)
return p;
}
return NULL;
}
struct remoteconf *
newrmconf()
{
struct remoteconf *new;
int i;
new = racoon_calloc(1, sizeof(*new));
if (new == NULL)
return NULL;
new->proposal = NULL;
/* set default */
new->doitype = IPSEC_DOI;
new->sittype = IPSECDOI_SIT_IDENTITY_ONLY;
new->idvtype = IDTYPE_UNDEFINED;
new->idvl_p = genlist_init();
new->nonce_size = DEFAULT_NONCE_SIZE;
new->passive = FALSE;
new->ike_frag = FALSE;
new->esp_frag = IP_MAXPACKET;
new->ini_contact = TRUE;
new->mode_cfg = FALSE;
new->pcheck_level = PROP_CHECK_STRICT;
new->verify_identifier = FALSE;
new->verify_cert = TRUE;
new->cacertfile = NULL;
new->send_cert = TRUE;
new->send_cr = TRUE;
new->match_empty_cr = FALSE;
new->support_proxy = FALSE;
for (i = 0; i <= SCRIPT_MAX; i++)
new->script[i] = NULL;
new->gen_policy = FALSE;
new->nat_traversal = FALSE;
new->rsa_private = genlist_init();
new->rsa_public = genlist_init();
new->idv = NULL;
new->key = NULL;
new->dpd = TRUE; /* Enable DPD support by default */
new->dpd_interval = 0; /* Disable DPD checks by default */
new->dpd_retry = 5;
new->dpd_maxfails = 5;
new->rekey = REKEY_ON;
new->weak_phase1_check = 0;
#ifdef ENABLE_HYBRID
new->xauth = NULL;
#endif
new->lifetime = oakley_get_defaultlifetime();
return new;
}
void *
dupidvl(entry, arg)
void *entry;
void *arg;
{
struct idspec *id;
struct idspec *old = (struct idspec *) entry;
id = newidspec();
if (!id) return (void *) -1;
if (set_identifier(&id->id, old->idtype, old->id) != 0) {
racoon_free(id);
return (void *) -1;
}
id->idtype = old->idtype;
genlist_append(arg, id);
return NULL;
}
void *
duprsa(entry, arg)
void *entry;
void *arg;
{
struct rsa_key *new;
new = rsa_key_dup((struct rsa_key *)entry);
if (new == NULL)
return (void *) -1;
genlist_append(arg, new);
/* keep genlist_foreach going */
return NULL;
}
/* Creates shallow copy of a remote config. Used for "inherit" keyword. */
struct remoteconf *
duprmconf_shallow (rmconf)
struct remoteconf *rmconf;
{
struct remoteconf *new;
struct proposalspec *prspec;
new = racoon_calloc(1, sizeof(*new));
if (new == NULL)
return NULL;
memcpy(new, rmconf, sizeof(*new));
new->name = NULL;
new->inherited_from = rmconf;
new->proposal = NULL; /* will be filled by set_isakmp_proposal() */
return new;
}
/* Copies pointer structures of an inherited remote config.
* Used by "inherit" mechanism in a two step copy method, necessary to
* prevent both double free() and memory leak during config reload.
*/
int
duprmconf_finish (new)
struct remoteconf *new;
{
struct remoteconf *rmconf;
int i;
if (new->inherited_from == NULL)
return 0; /* nothing todo, no inheritance */
rmconf = new->inherited_from;
/* duplicate dynamic structures unless value overridden */
if (new->etypes != NULL && new->etypes == rmconf->etypes)
new->etypes = dupetypes(new->etypes);
if (new->idvl_p == rmconf->idvl_p) {
new->idvl_p = genlist_init();
genlist_foreach(rmconf->idvl_p, dupidvl, new->idvl_p);
}
if (new->rsa_private == rmconf->rsa_private) {
new->rsa_private = genlist_init();
genlist_foreach(rmconf->rsa_private, duprsa, new->rsa_private);
}
if (new->rsa_public == rmconf->rsa_public) {
new->rsa_public = genlist_init();
genlist_foreach(rmconf->rsa_public, duprsa, new->rsa_public);
}
if (new->remote != NULL && new->remote == rmconf->remote) {
new->remote = racoon_malloc(sizeof(*new->remote));
if (new->remote == NULL) {
plog(LLV_ERROR, LOCATION, NULL,
"duprmconf_finish: malloc failed (remote)\n");
exit(1);
}
memcpy(new->remote, rmconf->remote, sizeof(*new->remote));
}
if (new->spspec != NULL && new->spspec == rmconf->spspec) {
dupspspec_list(new, rmconf);
}
/* proposal has been deep copied already from spspec's, see
* cfparse.y:set_isakmp_proposal, which in turn calls
* cfparse.y:expand_isakmpspec where the copying happens.
*/
#ifdef ENABLE_HYBRID
if (new->xauth != NULL && new->xauth == rmconf->xauth) {
new->xauth = xauth_rmconf_dup(new->xauth);
if (new->xauth == NULL)
exit(1);
}
#endif
/* duplicate strings unless value overridden */
if (new->mycertfile != NULL && new->mycertfile == rmconf->mycertfile) {
new->mycertfile = racoon_strdup(new->mycertfile);
STRDUP_FATAL(new->mycertfile);
}
if (new->myprivfile != NULL && new->myprivfile == rmconf->myprivfile) {
new->myprivfile = racoon_strdup(new->myprivfile);
STRDUP_FATAL(new->myprivfile);
}
if (new->peerscertfile != NULL && new->peerscertfile == rmconf->peerscertfile) {
new->peerscertfile = racoon_strdup(new->peerscertfile);
STRDUP_FATAL(new->peerscertfile);
}
if (new->cacertfile != NULL && new->cacertfile == rmconf->cacertfile) {
new->cacertfile = racoon_strdup(new->cacertfile);
STRDUP_FATAL(new->cacertfile);
}
if (new->idv != NULL && new->idv == rmconf->idv) {
new->idv = vdup(new->idv);
STRDUP_FATAL(new->idv);
}
if (new->key != NULL && new->key == rmconf->key) {
new->key = vdup(new->key);
STRDUP_FATAL(new->key);
}
if (new->mycert != NULL && new->mycert == rmconf->mycert) {
new->mycert = vdup(new->mycert);
STRDUP_FATAL(new->mycert);
}
if (new->peerscert != NULL && new->peerscert == rmconf->peerscert) {
new->peerscert = vdup(new->peerscert);
STRDUP_FATAL(new->peerscert);
}
if (new->cacert != NULL && new->cacert == rmconf->cacert) {
new->cacert = vdup(new->cacert);
STRDUP_FATAL(new->cacert);
}
for (i = 0; i <= SCRIPT_MAX; i++)
if (new->script[i] != NULL && new->script[i] == rmconf->script[i]) {
new->script[i] = vdup(new->script[i]);
STRDUP_FATAL(new->script[i]);
}
return 0;
}
static void
idspec_free(void *data)
{
vfree (((struct idspec *)data)->id);
free (data);
}
void
delrmconf(rmconf)
struct remoteconf *rmconf;
{
int i;
#ifdef ENABLE_HYBRID
if (rmconf->xauth)
xauth_rmconf_delete(&rmconf->xauth);
#endif
if (rmconf->etypes){
deletypes(rmconf->etypes);
rmconf->etypes=NULL;
}
if (rmconf->idv)
vfree(rmconf->idv);
if (rmconf->key)
vfree(rmconf->key);
if (rmconf->idvl_p)
genlist_free(rmconf->idvl_p, idspec_free);
if (rmconf->dhgrp)
oakley_dhgrp_free(rmconf->dhgrp);
if (rmconf->proposal)
delisakmpsa(rmconf->proposal);
flushspspec(rmconf);
if (rmconf->mycert)
vfree(rmconf->mycert);
if (rmconf->mycertfile)
racoon_free(rmconf->mycertfile);
if (rmconf->myprivfile)
racoon_free(rmconf->myprivfile);
if (rmconf->peerscert)
vfree(rmconf->peerscert);
if (rmconf->peerscertfile)
racoon_free(rmconf->peerscertfile);
if (rmconf->cacert)
vfree(rmconf->cacert);
if (rmconf->cacertfile)
racoon_free(rmconf->cacertfile);
if (rmconf->rsa_private)
genlist_free(rmconf->rsa_private, rsa_key_free);
if (rmconf->rsa_public)
genlist_free(rmconf->rsa_public, rsa_key_free);
if (rmconf->name)
racoon_free(rmconf->name);
if (rmconf->remote)
racoon_free(rmconf->remote);
for (i = 0; i <= SCRIPT_MAX; i++)
if (rmconf->script[i])
vfree(rmconf->script[i]);
racoon_free(rmconf);
}
void
delisakmpsa(sa)
struct isakmpsa *sa;
{
if (sa->dhgrp)
oakley_dhgrp_free(sa->dhgrp);
if (sa->next)
delisakmpsa(sa->next);
#ifdef HAVE_GSSAPI
if (sa->gssid)
vfree(sa->gssid);
#endif
racoon_free(sa);
}
struct etypes *
dupetypes(orig)
struct etypes *orig;
{
struct etypes *new;
if (!orig)
return NULL;
new = racoon_malloc(sizeof(struct etypes));
if (new == NULL)
return NULL;
new->type = orig->type;
new->next = NULL;
if (orig->next)
new->next=dupetypes(orig->next);
return new;
}
void
deletypes(e)
struct etypes *e;
{
if (e->next)
deletypes(e->next);
racoon_free(e);
}
/*
* insert into head of list.
*/
void
insrmconf(new)
struct remoteconf *new;
{
if (new->name == NULL) {
new->name = racoon_strdup(saddr2str(new->remote));
}
if (new->remote == NULL) {
new->remote = newsaddr(sizeof(struct sockaddr));
new->remote->sa_family = AF_UNSPEC;
}
TAILQ_INSERT_HEAD(&rmtree, new, chain);
}
void
remrmconf(rmconf)
struct remoteconf *rmconf;
{
TAILQ_REMOVE(&rmtree, rmconf, chain);
}
void
flushrmconf()
{
struct remoteconf *p, *next;
for (p = TAILQ_FIRST(&rmtree); p; p = next) {
next = TAILQ_NEXT(p, chain);
remrmconf(p);
delrmconf(p);
}
}
void
initrmconf()
{
TAILQ_INIT(&rmtree);
}
void
rmconf_start_reload()
{
rmtree_save=rmtree;
initrmconf();
}
void
rmconf_finish_reload()
{
remoteconf_tailq_head_t rmtree_tmp;
rmtree_tmp=rmtree;
rmtree=rmtree_save;
flushrmconf();
initrmconf();
rmtree=rmtree_tmp;
}
/* check exchange type to be acceptable */
int
check_etypeok(rmconf, ctx)
struct remoteconf *rmconf;
void *ctx;
{
u_int8_t etype = (u_int8_t) (intptr_t) ctx;
struct etypes *e;
for (e = rmconf->etypes; e != NULL; e = e->next) {
if (e->type == etype)
return 1;
plog(LLV_DEBUG2, LOCATION, NULL,
"Etype mismatch: got %d, expected %d.\n", e->type, etype);
}
return 0;
}
/*%%%*/
struct isakmpsa *
newisakmpsa()
{
struct isakmpsa *new;
new = racoon_calloc(1, sizeof(*new));
if (new == NULL)
return NULL;
/*
* Just for sanity, make sure this is initialized. This is
* filled in for real when the ISAKMP proposal is configured.
*/
new->vendorid = VENDORID_UNKNOWN;
new->next = NULL;
#ifdef HAVE_GSSAPI
new->gssid = NULL;
#endif
return new;
}
/*
* insert into tail of list.
*/
void
insisakmpsa(new, rmconf)
struct isakmpsa *new;
struct remoteconf *rmconf;
{
struct isakmpsa *p;
if (rmconf->proposal == NULL) {
rmconf->proposal = new;
return;
}
for (p = rmconf->proposal; p->next != NULL; p = p->next)
;
p->next = new;
}
static void *
dump_peers_identifiers (void *entry, void *arg)
{
struct idspec *id = (struct idspec*) entry;
char buf[1024], *pbuf;
pbuf = buf;
pbuf += sprintf (pbuf, "\tpeers_identifier %s",
s_idtype (id->idtype));
if (id->id)
pbuf += sprintf (pbuf, " \"%s\"", id->id->v);
plog(LLV_INFO, LOCATION, NULL, "%s;\n", buf);
return NULL;
}
static int
dump_rmconf_single (struct remoteconf *p, void *data)
{
struct etypes *etype = p->etypes;
struct isakmpsa *prop = p->proposal;
char buf[1024], *pbuf;
pbuf = buf;
pbuf += sprintf(pbuf, "remote \"%s\"", p->name);
if (p->inherited_from)
pbuf += sprintf(pbuf, " inherit \"%s\"",
p->inherited_from->name);
plog(LLV_INFO, LOCATION, NULL, "%s {\n", buf);
pbuf = buf;
pbuf += sprintf(pbuf, "\texchange_type ");
while (etype) {
pbuf += sprintf (pbuf, "%s%s", s_etype(etype->type),
etype->next != NULL ? ", " : ";\n");
etype = etype->next;
}
plog(LLV_INFO, LOCATION, NULL, "%s", buf);
plog(LLV_INFO, LOCATION, NULL, "\tdoi %s;\n", s_doi(p->doitype));
pbuf = buf;
pbuf += sprintf(pbuf, "\tmy_identifier %s", s_idtype (p->idvtype));
if (p->idvtype == IDTYPE_ASN1DN) {
plog(LLV_INFO, LOCATION, NULL, "%s;\n", buf);
plog(LLV_INFO, LOCATION, NULL,
"\tcertificate_type %s \"%s\" \"%s\";\n",
oakley_get_certtype(p->mycert) == ISAKMP_CERT_X509SIGN
? "x509" : "*UNKNOWN*",
p->mycertfile, p->myprivfile);
switch (oakley_get_certtype(p->peerscert)) {
case ISAKMP_CERT_NONE:
plog(LLV_INFO, LOCATION, NULL,
"\t/* peers certificate from payload */\n");
break;
case ISAKMP_CERT_X509SIGN:
plog(LLV_INFO, LOCATION, NULL,
"\tpeers_certfile \"%s\";\n", p->peerscertfile);
break;
case ISAKMP_CERT_DNS:
plog(LLV_INFO, LOCATION, NULL,
"\tpeers_certfile dnssec;\n");
break;
default:
plog(LLV_INFO, LOCATION, NULL,
"\tpeers_certfile *UNKNOWN* (%d)\n",
oakley_get_certtype(p->peerscert));
break;
}
}
else {
if (p->idv)
pbuf += sprintf (pbuf, " \"%s\"", p->idv->v);
plog(LLV_INFO, LOCATION, NULL, "%s;\n", buf);
genlist_foreach(p->idvl_p, &dump_peers_identifiers, NULL);
}
plog(LLV_INFO, LOCATION, NULL, "\trekey %s;\n",
p->rekey == REKEY_FORCE ? "force" : s_switch (p->rekey));
plog(LLV_INFO, LOCATION, NULL, "\tsend_cert %s;\n",
s_switch (p->send_cert));
plog(LLV_INFO, LOCATION, NULL, "\tsend_cr %s;\n",
s_switch (p->send_cr));
plog(LLV_INFO, LOCATION, NULL, "\tmatch_empty_cr %s;\n",
s_switch (p->match_empty_cr));
plog(LLV_INFO, LOCATION, NULL, "\tverify_cert %s;\n",
s_switch (p->verify_cert));
plog(LLV_INFO, LOCATION, NULL, "\tverify_identifier %s;\n",
s_switch (p->verify_identifier));
plog(LLV_INFO, LOCATION, NULL, "\tnat_traversal %s;\n",
p->nat_traversal == NATT_FORCE ?
"force" : s_switch (p->nat_traversal));
plog(LLV_INFO, LOCATION, NULL, "\tnonce_size %d;\n",
p->nonce_size);
plog(LLV_INFO, LOCATION, NULL, "\tpassive %s;\n",
s_switch (p->passive));
plog(LLV_INFO, LOCATION, NULL, "\tike_frag %s;\n",
p->ike_frag == ISAKMP_FRAG_FORCE ?
"force" : s_switch (p->ike_frag));
plog(LLV_INFO, LOCATION, NULL, "\tesp_frag %d;\n", p->esp_frag);
plog(LLV_INFO, LOCATION, NULL, "\tinitial_contact %s;\n",
s_switch (p->ini_contact));
plog(LLV_INFO, LOCATION, NULL, "\tgenerate_policy %s;\n",
s_switch (p->gen_policy));
plog(LLV_INFO, LOCATION, NULL, "\tsupport_proxy %s;\n",
s_switch (p->support_proxy));
while (prop) {
plog(LLV_INFO, LOCATION, NULL, "\n");
plog(LLV_INFO, LOCATION, NULL,
"\t/* prop_no=%d, trns_no=%d */\n",
prop->prop_no, prop->trns_no);
plog(LLV_INFO, LOCATION, NULL, "\tproposal {\n");
plog(LLV_INFO, LOCATION, NULL, "\t\tlifetime time %lu sec;\n",
(long)prop->lifetime);
plog(LLV_INFO, LOCATION, NULL, "\t\tlifetime bytes %zd;\n",
prop->lifebyte);
plog(LLV_INFO, LOCATION, NULL, "\t\tdh_group %s;\n",
alg_oakley_dhdef_name(prop->dh_group));
plog(LLV_INFO, LOCATION, NULL, "\t\tencryption_algorithm %s;\n",
alg_oakley_encdef_name(prop->enctype));
plog(LLV_INFO, LOCATION, NULL, "\t\thash_algorithm %s;\n",
alg_oakley_hashdef_name(prop->hashtype));
plog(LLV_INFO, LOCATION, NULL, "\t\tauthentication_method %s;\n",
alg_oakley_authdef_name(prop->authmethod));
plog(LLV_INFO, LOCATION, NULL, "\t}\n");
prop = prop->next;
}
plog(LLV_INFO, LOCATION, NULL, "}\n");
plog(LLV_INFO, LOCATION, NULL, "\n");
return 0;
}
void
dumprmconf()
{
enumrmconf(NULL, dump_rmconf_single, NULL);
}
struct idspec *
newidspec()
{
struct idspec *new;
new = racoon_calloc(1, sizeof(*new));
if (new == NULL)
return NULL;
new->idtype = IDTYPE_ADDRESS;
return new;
}
vchar_t *
script_path_add(path)
vchar_t *path;
{
char *script_dir;
vchar_t *new_path;
vchar_t *new_storage;
vchar_t **sp;
size_t len;
size_t size;
script_dir = lcconf->pathinfo[LC_PATHTYPE_SCRIPT];
/* Try to find the script in the script directory */
if ((path->v[0] != '/') && (script_dir != NULL)) {
len = strlen(script_dir) + sizeof("/") + path->l + 1;
if ((new_path = vmalloc(len)) == NULL) {
plog(LLV_ERROR, LOCATION, NULL,
"Cannot allocate memory: %s\n", strerror(errno));
return NULL;
}
new_path->v[0] = '\0';
(void)strlcat(new_path->v, script_dir, len);
(void)strlcat(new_path->v, "/", len);
(void)strlcat(new_path->v, path->v, len);
vfree(path);
path = new_path;
}
return path;
}
struct isakmpsa *
dupisakmpsa(struct isakmpsa *sa)
{
struct isakmpsa *res = NULL;
if(sa == NULL)
return NULL;
res = newisakmpsa();
if(res == NULL)
return NULL;
*res = *sa;
#ifdef HAVE_GSSAPI
if (sa->gssid != NULL)
res->gssid = vdup(sa->gssid);
#endif
res->next = NULL;
if(sa->dhgrp != NULL)
oakley_setdhgroup(sa->dh_group, &res->dhgrp);
return res;
}
#ifdef ENABLE_HYBRID
int
isakmpsa_switch_authmethod(authmethod)
int authmethod;
{
switch(authmethod) {
case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R:
authmethod = OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I;
break;
case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_R:
authmethod = OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I;
break;
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R:
authmethod = OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I;
break;
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R:
authmethod = OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I;
break;
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_R:
authmethod = OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I;
break;
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_R:
authmethod = OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_I;
break;
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_R:
authmethod = OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_I;
break;
default:
break;
}
return authmethod;
}
#endif
/*
* Given a proposed ISAKMP SA, and a list of acceptable
* ISAKMP SAs, it compares using pcheck_level policy and
* returns first match (if any).
*/
struct isakmpsa *
checkisakmpsa(pcheck_level, proposal, acceptable)
int pcheck_level;
struct isakmpsa *proposal, *acceptable;
{
struct isakmpsa *p;
for (p = acceptable; p != NULL; p = p->next){
plog(LLV_DEBUG2, LOCATION, NULL,
"checkisakmpsa:\nauthmethod: %d / %d\n",
isakmpsa_switch_authmethod(proposal->authmethod), isakmpsa_switch_authmethod(p->authmethod));
if (isakmpsa_switch_authmethod(proposal->authmethod) != isakmpsa_switch_authmethod(p->authmethod) ||
proposal->enctype != p->enctype ||
proposal->dh_group != p->dh_group ||
proposal->hashtype != p->hashtype)
continue;
switch (pcheck_level) {
case PROP_CHECK_OBEY:
break;
case PROP_CHECK_CLAIM:
case PROP_CHECK_STRICT:
if (proposal->encklen < p->encklen ||
#if 0
proposal->lifebyte > p->lifebyte ||
#endif
proposal->lifetime > p->lifetime)
continue;
break;
case PROP_CHECK_EXACT:
if (proposal->encklen != p->encklen ||
#if 0
proposal->lifebyte != p->lifebyte ||
#endif
proposal->lifetime != p->lifetime)
continue;
break;
default:
continue;
}
return p;
}
return NULL;
}
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