ims-volte-vowifi
/
strongswan
9
0
Fork 0
Code Pull Requests Releases Activity
strongswan/src/starter/confread.c

1111 lines
25 KiB
C
Raw Blame History

/* strongSwan IPsec config file parser
* Copyright (C) 2001-2002 Mathieu Lafon - Arkoon Network Security
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* RCSID $Id$
*/
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <freeswan.h>
#include "../pluto/constants.h"
#include "../pluto/defs.h"
#include "../pluto/log.h"
#include "keywords.h"
#include "parser.h"
#include "confread.h"
#include "args.h"
#include "interfaces.h"
/* strings containing a colon are interpreted as an IPv6 address */
#define ip_version(string) (strchr(string, '.') ? AF_INET : AF_INET6)
static const char ike_defaults[] = "aes128-sha-modp2048";
static const char esp_defaults[] = "aes128-sha1, 3des-md5";
static const char firewall_defaults[] = "ipsec _updown iptables";
static void default_values(starter_config_t *cfg)
{
if (cfg == NULL)
return;
memset(cfg, 0, sizeof(struct starter_config));
/* is there enough space for all seen flags? */
assert(KW_SETUP_LAST - KW_SETUP_FIRST <
sizeof(cfg->setup.seen) * BITS_PER_BYTE);
assert(KW_CONN_LAST - KW_CONN_FIRST <
sizeof(cfg->conn_default.seen) * BITS_PER_BYTE);
assert(KW_END_LAST - KW_END_FIRST <
sizeof(cfg->conn_default.right.seen) * BITS_PER_BYTE);
assert(KW_CA_LAST - KW_CA_FIRST <
sizeof(cfg->ca_default.seen) * BITS_PER_BYTE);
cfg->setup.seen = LEMPTY;
cfg->setup.fragicmp = TRUE;
cfg->setup.hidetos = TRUE;
cfg->setup.uniqueids = TRUE;
cfg->setup.interfaces = new_list("%defaultroute");
cfg->setup.charonstart = TRUE;
cfg->setup.plutostart = TRUE;
cfg->conn_default.seen = LEMPTY;
cfg->conn_default.startup = STARTUP_NO;
cfg->conn_default.state = STATE_IGNORE;
cfg->conn_default.policy = POLICY_ENCRYPT | POLICY_TUNNEL | POLICY_RSASIG |
POLICY_PFS | POLICY_MOBIKE;
cfg->conn_default.ike = clone_str(ike_defaults, "ike_defaults");
cfg->conn_default.esp = clone_str(esp_defaults, "esp_defaults");
cfg->conn_default.sa_ike_life_seconds = OAKLEY_ISAKMP_SA_LIFETIME_DEFAULT;
cfg->conn_default.sa_ipsec_life_seconds = PLUTO_SA_LIFE_DURATION_DEFAULT;
cfg->conn_default.sa_rekey_margin = SA_REPLACEMENT_MARGIN_DEFAULT;
cfg->conn_default.sa_rekey_fuzz = SA_REPLACEMENT_FUZZ_DEFAULT;
cfg->conn_default.sa_keying_tries = SA_REPLACEMENT_RETRIES_DEFAULT;
cfg->conn_default.addr_family = AF_INET;
cfg->conn_default.tunnel_addr_family = AF_INET;
cfg->conn_default.dpd_delay = 30; /* seconds */
cfg->conn_default.dpd_timeout = 150; /* seconds */
cfg->conn_default.left.seen = LEMPTY;
cfg->conn_default.right.seen = LEMPTY;
cfg->conn_default.left.sendcert = CERT_SEND_IF_ASKED;
cfg->conn_default.right.sendcert = CERT_SEND_IF_ASKED;
anyaddr(AF_INET, &cfg->conn_default.left.addr);
anyaddr(AF_INET, &cfg->conn_default.left.nexthop);
anyaddr(AF_INET, &cfg->conn_default.right.addr);
anyaddr(AF_INET, &cfg->conn_default.right.nexthop);
cfg->ca_default.seen = LEMPTY;
}
#define KW_POLICY_FLAG(sy, sn, fl) \
if (streq(kw->value, sy)) { conn->policy |= fl; } \
else if (streq(kw->value, sn)) { conn->policy &= ~fl; } \
else { plog("# bad policy value: %s=%s", kw->entry->name, kw->value); cfg->err++; }
static void
load_setup(starter_config_t *cfg, config_parsed_t *cfgp)
{
kw_list_t *kw;
DBG(DBG_CONTROL,
DBG_log("Loading config setup")
)
for (kw = cfgp->config_setup; kw; kw = kw->next)
{
bool assigned = FALSE;
kw_token_t token = kw->entry->token;
if (token < KW_SETUP_FIRST || token > KW_SETUP_LAST)
{
plog("# unsupported keyword '%s' in config setup", kw->entry->name);
cfg->err++;
continue;
}
if (!assign_arg(token, KW_SETUP_FIRST, kw, (char *)cfg, &assigned))
{
plog(" bad argument value in config setup");
cfg->err++;
continue;
}
}
}
static void
kw_end(starter_conn_t *conn, starter_end_t *end, kw_token_t token
, kw_list_t *kw, char *conn_name, starter_config_t *cfg)
{
err_t ugh = NULL;
bool assigned = FALSE;
int has_port_wildcard; /* set if port is %any */
char *name = kw->entry->name;
char *value = kw->value;
if (!assign_arg(token, KW_END_FIRST, kw, (char *)end, &assigned))
goto err;
/* post processing of some keywords that were assigned automatically */
switch (token)
{
case KW_SUBNET:
if ((strlen(value) >= 6 && strncmp(value,"vhost:",6) == 0)
|| (strlen(value) >= 5 && strncmp(value,"vnet:",5) == 0))
{
/* used by pluto only */
end->has_virt = TRUE;
}
else
{
ip_subnet net;
char *pos;
int len = 0;
end->has_client = TRUE;
conn->tunnel_addr_family = ip_version(value);
pos = strchr(value, ',');
if (pos)
{
len = pos - value;
}
ugh = ttosubnet(value, len, ip_version(value), &net);
if (ugh != NULL)
{
plog("# bad subnet: %s=%s [%s]", name, value, ugh);
goto err;
}
}
break;
case KW_SOURCEIP:
if (end->has_natip)
{
plog("# natip and sourceip cannot be defined at the same time");
goto err;
}
if (streq(value, "%modeconfig") || streq(value, "%modecfg") ||
streq(value, "%config") || streq(value, "%cfg"))
{
pfree(end->srcip);
end->srcip = NULL;
end->modecfg = TRUE;
}
else
{
ip_address addr;
ip_subnet net;
conn->tunnel_addr_family = ip_version(value);
if (strchr(value, '/'))
{ /* CIDR notation, address pool */
ugh = ttosubnet(value, 0, conn->tunnel_addr_family, &net);
}
else if (value[0] != '%')
{ /* old style fixed srcip, a %poolname otherwise */
ugh = ttoaddr(value, 0, conn->tunnel_addr_family, &addr);
}
if (ugh != NULL)
{
plog("# bad addr: %s=%s [%s]", name, value, ugh);
goto err;
}
}
conn->policy |= POLICY_TUNNEL;
break;
case KW_SENDCERT:
if (end->sendcert == CERT_YES_SEND)
{
end->sendcert = CERT_ALWAYS_SEND;
}
else if (end->sendcert == CERT_NO_SEND)
{
end->sendcert = CERT_NEVER_SEND;
}
break;
default:
break;
}
if (assigned)
return;
/* individual processing of keywords that were not assigned automatically */
switch (token)
{
case KW_HOST:
if (streq(value, "%defaultroute"))
{
if (cfg->defaultroute.defined)
{
end->addr = cfg->defaultroute.addr;
end->nexthop = cfg->defaultroute.nexthop;
}
else
{
plog("# default route not known: %s=%s", name, value);
goto err;
}
}
else if (streq(value, "%any") || streq(value, "%any4"))
{
anyaddr(conn->addr_family, &end->addr);
}
else if (streq(value, "%any6"))
{
conn->addr_family = AF_INET6;
anyaddr(conn->addr_family, &end->addr);
}
else if (streq(value, "%group"))
{
ip_address any;
conn->policy |= POLICY_GROUP | POLICY_TUNNEL;
anyaddr(conn->addr_family, &end->addr);
anyaddr(conn->tunnel_addr_family, &any);
end->has_client = TRUE;
}
else
{
/* check for allow_any prefix */
if (value[0] == '%')
{
end->allow_any = TRUE;
value++;
}
conn->addr_family = ip_version(value);
ugh = ttoaddr(value, 0, conn->addr_family, &end->addr);
if (ugh != NULL)
{
plog("# bad addr: %s=%s [%s]", name, value, ugh);
if (streq(ugh, "does not look numeric and name lookup failed"))
{
end->dns_failed = TRUE;
anyaddr(conn->addr_family, &end->addr);
}
else
{
goto err;
}
}
}
break;
case KW_NEXTHOP:
if (streq(value, "%defaultroute"))
{
if (cfg->defaultroute.defined)
end->nexthop = cfg->defaultroute.nexthop;
else
{
plog("# default route not known: %s=%s", name, value);
goto err;
}
}
else if (streq(value, "%direct"))
{
ugh = anyaddr(conn->addr_family, &end->nexthop);
}
else
{
conn->addr_family = ip_version(value);
ugh = ttoaddr(value, 0, conn->addr_family, &end->nexthop);
}
if (ugh != NULL)
{
plog("# bad addr: %s=%s [%s]", name, value, ugh);
goto err;
}
break;
case KW_SUBNETWITHIN:
{
ip_subnet net;
end->has_client = TRUE;
end->has_client_wildcard = TRUE;
conn->tunnel_addr_family = ip_version(value);
ugh = ttosubnet(value, 0, ip_version(value), &net);
if (ugh != NULL)
{
plog("# bad subnet: %s=%s [%s]", name, value, ugh);
goto err;
}
end->subnet = clone_str(value, "subnetwithin");
break;
}
case KW_PROTOPORT:
ugh = ttoprotoport(value, 0, &end->protocol, &end->port, &has_port_wildcard);
end->has_port_wildcard = has_port_wildcard;
break;
case KW_NATIP:
if (end->srcip)
{
plog("# natip and sourceip cannot be defined at the same time");
goto err;
}
if (streq(value, "%defaultroute"))
{
char buf[64];
if (cfg->defaultroute.defined)
{
addrtot(&cfg->defaultroute.addr, 0, buf, sizeof(buf));
end->srcip = clone_str(buf, "natip");
}
else
{
plog("# default route not known: %s=%s", name, value);
goto err;
}
}
else
{
ip_address addr;
conn->tunnel_addr_family = ip_version(value);
ugh = ttoaddr(value, 0, conn->tunnel_addr_family, &addr);
if (ugh != NULL)
{
plog("# bad addr: %s=%s [%s]", name, value, ugh);
goto err;
}
end->srcip = clone_str(value, "srcip");
}
end->has_natip = TRUE;
conn->policy |= POLICY_TUNNEL;
break;
default:
break;
}
return;
err:
plog(" bad argument value in conn '%s'", conn_name);
cfg->err++;
}
/*
* handles left|right=<FQDN> DNS resolution failure
*/
static void
handle_dns_failure( const char *label, starter_end_t *end, starter_config_t *cfg)
{
if (end->dns_failed)
{
if (end->allow_any)
{
plog("# fallback to %s=%%any due to '%%' prefix or %sallowany=yes",
label, label);
}
else
{
/* declare an error */
cfg->err++;
}
}
}
/*
* handles left|rightfirewall and left|rightupdown parameters
*/
static void
handle_firewall( const char *label, starter_end_t *end, starter_config_t *cfg)
{
if (end->firewall && (end->seen & LELEM(KW_FIREWALL - KW_END_FIRST)))
{
if (end->updown != NULL)
{
plog("# cannot have both %sfirewall and %supdown", label, label);
cfg->err++;
}
else
{
end->updown = clone_str(firewall_defaults, "firewall_defaults");
end->firewall = FALSE;
}
}
}
/*
* parse a conn section
*/
static void
load_conn(starter_conn_t *conn, kw_list_t *kw, starter_config_t *cfg)
{
char *conn_name = (conn->name == NULL)? "%default":conn->name;
for ( ; kw; kw = kw->next)
{
bool assigned = FALSE;
kw_token_t token = kw->entry->token;
if (token >= KW_LEFT_FIRST && token <= KW_LEFT_LAST)
{
kw_end(conn, &conn->left, token - KW_LEFT_FIRST + KW_END_FIRST
, kw, conn_name, cfg);
continue;
}
else if (token >= KW_RIGHT_FIRST && token <= KW_RIGHT_LAST)
{
kw_end(conn, &conn->right, token - KW_RIGHT_FIRST + KW_END_FIRST
, kw, conn_name, cfg);
continue;
}
if (token == KW_AUTO)
{
token = KW_CONN_SETUP;
}
else if (token == KW_ALSO)
{
if (cfg->parse_also)
{
also_t *also = alloc_thing(also_t, "also_t");
also->name = clone_str(kw->value, "also");
also->next = conn->also;
conn->also = also;
DBG(DBG_CONTROL,
DBG_log(" also=%s", kw->value)
)
}
continue;
}
if (token < KW_CONN_FIRST || token > KW_CONN_LAST)
{
plog("# unsupported keyword '%s' in conn '%s'"
, kw->entry->name, conn_name);
cfg->err++;
continue;
}
if (!assign_arg(token, KW_CONN_FIRST, kw, (char *)conn, &assigned))
{
plog(" bad argument value in conn '%s'", conn_name);
cfg->err++;
continue;
}
if (assigned)
continue;
switch (token)
{
case KW_TYPE:
conn->policy &= ~(POLICY_TUNNEL | POLICY_SHUNT_MASK);
if (streq(kw->value, "tunnel"))
conn->policy |= POLICY_TUNNEL;
else if (streq(kw->value, "beet"))
conn->policy |= POLICY_BEET;
else if (streq(kw->value, "passthrough") || streq(kw->value, "pass"))
conn->policy |= POLICY_SHUNT_PASS;
else if (streq(kw->value, "drop"))
conn->policy |= POLICY_SHUNT_DROP;
else if (streq(kw->value, "reject"))
conn->policy |= POLICY_SHUNT_REJECT;
else if (strcmp(kw->value, "transport") != 0)
{
plog("# bad policy value: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
break;
case KW_PFS:
KW_POLICY_FLAG("yes", "no", POLICY_PFS)
break;
case KW_COMPRESS:
KW_POLICY_FLAG("yes", "no", POLICY_COMPRESS)
break;
case KW_AUTH:
KW_POLICY_FLAG("ah", "esp", POLICY_AUTHENTICATE)
break;
case KW_AUTHBY:
conn->policy &= ~(POLICY_ID_AUTH_MASK | POLICY_ENCRYPT);
if (!(streq(kw->value, "never") || streq(kw->value, "eap")))
{
char *value = kw->value;
char *second = strchr(kw->value, '|');
if (second != NULL)
*second = '\0';
/* also handles the cases secret|rsasig and rsasig|secret */
for (;;)
{
if (streq(value, "rsa") || streq(value, "rsasig"))
conn->policy |= POLICY_RSASIG | POLICY_ENCRYPT;
else if (streq(value, "secret") || streq(value, "psk"))
conn->policy |= POLICY_PSK | POLICY_ENCRYPT;
else if (streq(value, "ecdsa") || streq(value, "ecdsasig"))
conn->policy |= POLICY_ECDSASIG | POLICY_ENCRYPT;
else if (streq(value, "xauthrsasig"))
conn->policy |= POLICY_XAUTH_RSASIG | POLICY_ENCRYPT;
else if (streq(value, "xauthpsk"))
conn->policy |= POLICY_XAUTH_PSK | POLICY_ENCRYPT;
else
{
plog("# bad policy value: %s=%s", kw->entry->name, kw->value);
cfg->err++;
break;
}
if (second == NULL)
break;
value = second;
second = NULL; /* traverse the loop no more than twice */
}
}
break;
case KW_EAP:
{
char *sep;
/* check for vendor-type format */
sep = strchr(kw->value, '-');
if (sep)
{
*(sep++) = '\0';
conn->eap_type = atoi(kw->value);
conn->eap_vendor = atoi(sep);
if (conn->eap_type == 0 || conn->eap_vendor == 0)
{
plog("# invalid EAP type: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
break;
}
if (streq(kw->value, "aka"))
{
conn->eap_type = 23;
}
else if (streq(kw->value, "sim"))
{
conn->eap_type = 18;
}
else if (streq(kw->value, "md5"))
{
conn->eap_type = 4;
}
else if (streq(kw->value, "gtc"))
{
conn->eap_type = 6;
}
else
{
conn->eap_type = atoi(kw->value);
if (conn->eap_type == 0)
{
plog("# unknown EAP type: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
}
break;
}
case KW_KEYINGTRIES:
if (streq(kw->value, "%forever"))
{
conn->sa_keying_tries = 0;
}
else
{
char *endptr;
conn->sa_keying_tries = strtoul(kw->value, &endptr, 10);
if (*endptr != '\0')
{
plog("# bad integer value: %s=%s", kw->entry->name, kw->value);
cfg->err++;
}
}
break;
case KW_REKEY:
KW_POLICY_FLAG("no", "yes", POLICY_DONT_REKEY)
break;
case KW_REAUTH:
KW_POLICY_FLAG("no", "yes", POLICY_DONT_REAUTH)
break;
case KW_MOBIKE:
KW_POLICY_FLAG("yes", "no", POLICY_MOBIKE)
break;
case KW_FORCEENCAPS:
KW_POLICY_FLAG("yes", "no", POLICY_FORCE_ENCAP)
break;
case KW_MODECONFIG:
KW_POLICY_FLAG("push", "pull", POLICY_MODECFG_PUSH)
break;
case KW_XAUTH:
KW_POLICY_FLAG("server", "client", POLICY_XAUTH_SERVER)
break;
default:
break;
}
}
handle_dns_failure("left", &conn->left, cfg);
handle_dns_failure("right", &conn->right, cfg);
handle_firewall("left", &conn->left, cfg);
handle_firewall("right", &conn->right, cfg);
}
/*
* initialize a conn object with the default conn
*/
static void
conn_default(char *name, starter_conn_t *conn, starter_conn_t *def)
{
memcpy(conn, def, sizeof(starter_conn_t));
conn->name = clone_str(name, "conn name");
clone_args(KW_CONN_FIRST, KW_CONN_LAST, (char *)conn, (char *)def);
clone_args(KW_END_FIRST, KW_END_LAST, (char *)&conn->left, (char *)&def->left);
clone_args(KW_END_FIRST, KW_END_LAST, (char *)&conn->right, (char *)&def->right);
}
/*
* parse a ca section
*/
static void
load_ca(starter_ca_t *ca, kw_list_t *kw, starter_config_t *cfg)
{
char *ca_name = (ca->name == NULL)? "%default":ca->name;
for ( ; kw; kw = kw->next)
{
bool assigned = FALSE;
kw_token_t token = kw->entry->token;
if (token == KW_AUTO)
{
token = KW_CA_SETUP;
}
else if (token == KW_ALSO)
{
if (cfg->parse_also)
{
also_t *also = alloc_thing(also_t, "also_t");
also->name = clone_str(kw->value, "also");
also->next = ca->also;
ca->also = also;
DBG(DBG_CONTROL,
DBG_log(" also=%s", kw->value)
)
}
continue;
}
if (token < KW_CA_FIRST || token > KW_CA_LAST)
{
plog("# unsupported keyword '%s' in ca '%s'", kw->entry->name, ca_name);
cfg->err++;
continue;
}
if (!assign_arg(token, KW_CA_FIRST, kw, (char *)ca, &assigned))
{
plog(" bad argument value in ca '%s'", ca_name);
cfg->err++;
}
}
/* treat 'route' and 'start' as 'add' */
if (ca->startup != STARTUP_NO)
ca->startup = STARTUP_ADD;
}
/*
* initialize a ca object with the default ca
*/
static void
ca_default(char *name, starter_ca_t *ca, starter_ca_t *def)
{
memcpy(ca, def, sizeof(starter_ca_t));
ca->name = clone_str(name, "ca name");
clone_args(KW_CA_FIRST, KW_CA_LAST, (char *)ca, (char *)def);
}
static kw_list_t*
find_also_conn(const char* name, starter_conn_t *conn, starter_config_t *cfg);
static void
load_also_conns(starter_conn_t *conn, also_t *also, starter_config_t *cfg)
{
while (also != NULL)
{
kw_list_t *kw = find_also_conn(also->name, conn, cfg);
if (kw == NULL)
{
plog(" conn '%s' cannot include '%s'", conn->name, also->name);
}
else
{
DBG(DBG_CONTROL,
DBG_log("conn '%s' includes '%s'", conn->name, also->name)
)
/* only load if no error occurred in the first round */
if (cfg->err == 0)
load_conn(conn, kw, cfg);
}
also = also->next;
}
}
/*
* find a conn included by also
*/
static kw_list_t*
find_also_conn(const char* name, starter_conn_t *conn, starter_config_t *cfg)
{
starter_conn_t *c = cfg->conn_first;
while (c != NULL)
{
if (streq(name, c->name))
{
if (conn->visit == c->visit)
{
plog("# detected also loop");
cfg->err++;
return NULL;
}
c->visit = conn->visit;
load_also_conns(conn, c->also, cfg);
return c->kw;
}
c = c->next;
}
plog("# also '%s' not found", name);
cfg->err++;
return NULL;
}
static kw_list_t*
find_also_ca(const char* name, starter_ca_t *ca, starter_config_t *cfg);
static void
load_also_cas(starter_ca_t *ca, also_t *also, starter_config_t *cfg)
{
while (also != NULL)
{
kw_list_t *kw = find_also_ca(also->name, ca, cfg);
if (kw == NULL)
{
plog(" ca '%s' cannot include '%s'", ca->name, also->name);
}
else
{
DBG(DBG_CONTROL,
DBG_log("ca '%s' includes '%s'", ca->name, also->name)
)
/* only load if no error occurred in the first round */
if (cfg->err == 0)
load_ca(ca, kw, cfg);
}
also = also->next;
}
}
/*
* find a ca included by also
*/
static kw_list_t*
find_also_ca(const char* name, starter_ca_t *ca, starter_config_t *cfg)
{
starter_ca_t *c = cfg->ca_first;
while (c != NULL)
{
if (streq(name, c->name))
{
if (ca->visit == c->visit)
{
plog("# detected also loop");
cfg->err++;
return NULL;
}
c->visit = ca->visit;
load_also_cas(ca, c->also, cfg);
return c->kw;
}
c = c->next;
}
plog("# also '%s' not found", name);
cfg->err++;
return NULL;
}
/*
* free the memory used by also_t objects
*/
static void
free_also(also_t *head)
{
while (head != NULL)
{
also_t *also = head;
head = also->next;
pfree(also->name);
pfree(also);
}
}
/*
* free the memory used by a starter_conn_t object
*/
static void
confread_free_conn(starter_conn_t *conn)
{
free_args(KW_END_FIRST, KW_END_LAST, (char *)&conn->left);
free_args(KW_END_FIRST, KW_END_LAST, (char *)&conn->right);
free_args(KW_CONN_NAME, KW_CONN_LAST, (char *)conn);
free_also(conn->also);
}
/*
* free the memory used by a starter_ca_t object
*/
static void
confread_free_ca(starter_ca_t *ca)
{
free_args(KW_CA_NAME, KW_CA_LAST, (char *)ca);
free_also(ca->also);
}
/*
* free the memory used by a starter_config_t object
*/
void
confread_free(starter_config_t *cfg)
{
starter_conn_t *conn = cfg->conn_first;
starter_ca_t *ca = cfg->ca_first;
free_args(KW_SETUP_FIRST, KW_SETUP_LAST, (char *)cfg);
confread_free_conn(&cfg->conn_default);
while (conn != NULL)
{
starter_conn_t *conn_aux = conn;
conn = conn->next;
confread_free_conn(conn_aux);
pfree(conn_aux);
}
confread_free_ca(&cfg->ca_default);
while (ca != NULL)
{
starter_ca_t *ca_aux = ca;
ca = ca->next;
confread_free_ca(ca_aux);
pfree(ca_aux);
}
pfree(cfg);
}
/*
* load and parse an IPsec configuration file
*/
starter_config_t *
confread_load(const char *file)
{
starter_config_t *cfg = NULL;
config_parsed_t *cfgp;
section_list_t *sconn, *sca;
starter_conn_t *conn;
starter_ca_t *ca;
u_int total_err;
u_int visit = 0;
/* load IPSec configuration file */
cfgp = parser_load_conf(file);
if (!cfgp)
{
return NULL;
}
cfg = (starter_config_t *)alloc_thing(starter_config_t, "starter_config_t");
/* set default values */
default_values(cfg);
/* determine default route */
get_defaultroute(&cfg->defaultroute);
/* load config setup section */
load_setup(cfg, cfgp);
/* in the first round parse also statements */
cfg->parse_also = TRUE;
/* find %default ca section */
for (sca = cfgp->ca_first; sca; sca = sca->next)
{
if (streq(sca->name, "%default"))
{
DBG(DBG_CONTROL,
DBG_log("Loading ca %%default")
)
load_ca(&cfg->ca_default, sca->kw, cfg);
}
}
/* parameters defined in ca %default sections can be overloads */
cfg->ca_default.seen = LEMPTY;
/* load other ca sections */
for (sca = cfgp->ca_first; sca; sca = sca->next)
{
u_int previous_err;
/* skip %default ca section */
if (streq(sca->name, "%default"))
continue;
DBG(DBG_CONTROL,
DBG_log("Loading ca '%s'", sca->name)
)
ca = (starter_ca_t *)alloc_thing(starter_ca_t, "starter_ca_t");
ca_default(sca->name, ca, &cfg->ca_default);
ca->kw = sca->kw;
ca->next = NULL;
previous_err = cfg->err;
load_ca(ca, ca->kw, cfg);
if (cfg->err > previous_err)
{
/* errors occurred - free the ca */
confread_free_ca(ca);
cfg->non_fatal_err += cfg->err - previous_err;
cfg->err = previous_err;
}
else
{
/* success - insert the ca into the chained list */
if (cfg->ca_last)
cfg->ca_last->next = ca;
cfg->ca_last = ca;
if (!cfg->ca_first)
cfg->ca_first = ca;
}
}
for (ca = cfg->ca_first; ca; ca = ca->next)
{
also_t *also = ca->also;
while (also != NULL)
{
kw_list_t *kw = find_also_ca(also->name, cfg->ca_first, cfg);
load_ca(ca, kw, cfg);
also = also->next;
}
if (ca->startup != STARTUP_NO)
ca->state = STATE_TO_ADD;
}
/* find %default conn sections */
for (sconn = cfgp->conn_first; sconn; sconn = sconn->next)
{
if (streq(sconn->name, "%default"))
{
DBG(DBG_CONTROL,
DBG_log("Loading conn %%default")
)
load_conn(&cfg->conn_default, sconn->kw, cfg);
}
}
/* parameter defined in conn %default sections can be overloaded */
cfg->conn_default.seen = LEMPTY;
cfg->conn_default.right.seen = LEMPTY;
cfg->conn_default.left.seen = LEMPTY;
/* load other conn sections */
for (sconn = cfgp->conn_first; sconn; sconn = sconn->next)
{
u_int previous_err;
/* skip %default conn section */
if (streq(sconn->name, "%default"))
continue;
DBG(DBG_CONTROL,
DBG_log("Loading conn '%s'", sconn->name)
)
conn = (starter_conn_t *)alloc_thing(starter_conn_t, "starter_conn_t");
conn_default(sconn->name, conn, &cfg->conn_default);
conn->kw = sconn->kw;
conn->next = NULL;
previous_err = cfg->err;
load_conn(conn, conn->kw, cfg);
if (cfg->err > previous_err)
{
/* error occurred - free the conn */
confread_free_conn(conn);
cfg->non_fatal_err += cfg->err - previous_err;
cfg->err = previous_err;
}
else
{
/* success - insert the conn into the chained list */
if (cfg->conn_last)
cfg->conn_last->next = conn;
cfg->conn_last = conn;
if (!cfg->conn_first)
cfg->conn_first = conn;
}
}
/* in the second round do not parse also statements */
cfg->parse_also = FALSE;
for (ca = cfg->ca_first; ca; ca = ca->next)
{
ca->visit = ++visit;
load_also_cas(ca, ca->also, cfg);
if (ca->startup != STARTUP_NO)
ca->state = STATE_TO_ADD;
}
for (conn = cfg->conn_first; conn; conn = conn->next)
{
conn->visit = ++visit;
load_also_conns(conn, conn->also, cfg);
if (conn->startup != STARTUP_NO)
conn->state = STATE_TO_ADD;
}
parser_free_conf(cfgp);
total_err = cfg->err + cfg->non_fatal_err;
if (total_err > 0)
{
plog("### %d parsing error%s (%d fatal) ###"
, total_err, (total_err > 1)?"s":"", cfg->err);
}
return cfg;
}
View Git Blame Copy Permalink