Major new upstream release, just ran svn-upgrade for now (and wrote some

debian/changelong entries).

1 files changed, 936 insertions, 0 deletions

diff --git a/src/starter/confread.c b/src/starter/confread.c
new file mode 100644
index 000000000..e7a4789a9
--- /dev/null
+++ b/src/starter/confread.c
@@ -0,0 +1,936 @@
+/* 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: confread.c,v 1.37 2006/04/17 19:35:07 as Exp $
+ */
+
+#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, ':') != NULL)? AF_INET6 : AF_INET;
+
+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 ;
+
+	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.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.left.srcip);
+	anyaddr(AF_INET, &cfg->conn_default.right.addr);
+	anyaddr(AF_INET, &cfg->conn_default.right.nexthop);
+	anyaddr(AF_INET, &cfg->conn_default.right.srcip);
+
+	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;
+
+	if (token == 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;
+	}
+
+	if (assigned)
+		return;
+
+	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"))
+		{
+			anyaddr(conn->addr_family, &end->addr);
+		}
+		else if (streq(value, "%any6"))
+		{
+			conn->addr_family = AF_INET6;
+			anyaddr(conn->addr_family, &end->addr);
+		}
+		else
+		{
+			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);
+				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_SUBNET:
+		if ((strlen(value) >= 6 && strncmp(value,"vhost:",6) == 0)
+		||  (strlen(value) >= 5 && strncmp(value,"vnet:",5) == 0))
+		{
+			end->virt = clone_str(value, "virt");
+		}
+		else
+		{
+			end->has_client = TRUE;
+			conn->tunnel_addr_family = ip_version(value);
+			ugh = ttosubnet(value, 0, conn->tunnel_addr_family, &end->subnet);
+			if (ugh != NULL)
+			{
+				plog("# bad subnet: %s=%s [%s]", name, value, ugh);
+				goto err;
+			}
+		}
+		break;
+	case KW_SUBNETWITHIN:
+		end->has_client = TRUE;
+		end->has_client_wildcard = TRUE;
+		conn->tunnel_addr_family = ip_version(value);
+		ugh = ttosubnet(value, 0, conn->tunnel_addr_family, &end->subnet);
+		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_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"))
+		{
+			end->modecfg = TRUE;
+		}
+		else
+		{
+			conn->tunnel_addr_family = ip_version(value);
+			ugh = ttoaddr(value, 0, conn->tunnel_addr_family, &end->srcip);
+			if (ugh != NULL)
+			{
+				plog("# bad addr: %s=%s [%s]", name, value, ugh);
+				goto err;
+			}
+			end->has_srcip = TRUE;
+		}
+		conn->policy |= POLICY_TUNNEL;
+		break;
+	case KW_NATIP:
+		if (end->has_srcip)
+		{
+			plog("# natip and sourceip cannot be defined at the same time");
+			goto err;
+		}
+		if (streq(value, "%defaultroute"))
+		{
+			if (cfg->defaultroute.defined)
+			{
+				end->srcip    = cfg->defaultroute.addr;
+			}
+			else
+			{
+				plog("# default route not known: %s=%s", name, value);
+				goto err;
+			}
+		}
+		else
+		{
+			conn->tunnel_addr_family = ip_version(value);
+			ugh = ttoaddr(value, 0, conn->tunnel_addr_family, &end->srcip);
+			if (ugh != NULL)
+			{
+				plog("# bad addr: %s=%s [%s]", name, value, ugh);
+				goto err;
+			}
+		}
+		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|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, "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, "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:
+			/* TODO: a gperf function for all EAP types */
+			if (streq(kw->value, "aka"))
+				conn->eap = 23;
+			else if (streq(kw->value, "sim"))
+			{
+				conn->eap = 18;
+			
+			}
+			else
+			{
+				conn->eap = atoi(kw->value);
+				if (conn->eap == 0)
+				{
+					plog("# unknown EAP type: %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_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_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;
+}
+
+
+
+/*
+ * 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 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)
+	{
+		/* 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;
+
+		if (cfg->ca_last)
+			cfg->ca_last->next = ca;
+		cfg->ca_last = ca;
+		if (!cfg->ca_first)
+			cfg->ca_first = ca;
+
+		load_ca(ca, ca->kw, cfg);
+	}
+
+	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)
+	{
+		/* 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;
+
+		if (cfg->conn_last)
+			cfg->conn_last->next = conn;
+		cfg->conn_last = conn;
+		if (!cfg->conn_first)
+			cfg->conn_first = conn;
+
+		load_conn(conn, conn->kw, cfg);
+	}
+
+	/* 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);
+
+	if (cfg->err)
+	{
+		plog("### %d parsing error%s ###", cfg->err, (cfg->err > 1)?"s":"");
+		confread_free(cfg);
+		cfg = NULL;
+	}
+
+	return cfg;
+}
+
+/*
+ * 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);
+}