- Updated to new upstream.

1 files changed, 977 insertions, 0 deletions

diff --git a/src/charon/plugins/stroke/stroke_cred.c b/src/charon/plugins/stroke/stroke_cred.c
new file mode 100644
index 000000000..223500488
--- /dev/null
+++ b/src/charon/plugins/stroke/stroke_cred.c
@@ -0,0 +1,977 @@
+/*
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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.
+ *
+ * $Id$
+ */
+
+#include "stroke_cred.h"
+#include "stroke_shared_key.h"
+
+#include <sys/stat.h>
+#include <limits.h>
+
+#include <credentials/certificates/x509.h>
+#include <credentials/certificates/crl.h>
+#include <credentials/certificates/ac.h>
+#include <utils/linked_list.h>
+#include <utils/mutex.h>
+#include <utils/lexparser.h>
+#include <asn1/pem.h>
+#include <daemon.h>
+
+/* configuration directories and files */
+#define CONFIG_DIR IPSEC_CONFDIR
+#define IPSEC_D_DIR CONFIG_DIR "/ipsec.d"
+#define PRIVATE_KEY_DIR IPSEC_D_DIR "/private"
+#define CERTIFICATE_DIR IPSEC_D_DIR "/certs"
+#define CA_CERTIFICATE_DIR IPSEC_D_DIR "/cacerts"
+#define AA_CERTIFICATE_DIR IPSEC_D_DIR "/aacerts"
+#define ATTR_CERTIFICATE_DIR IPSEC_D_DIR "/acerts"
+#define OCSP_CERTIFICATE_DIR IPSEC_D_DIR "/ocspcerts"
+#define CRL_DIR IPSEC_D_DIR "/crls"
+#define SECRETS_FILE CONFIG_DIR "/ipsec.secrets"
+
+typedef struct private_stroke_cred_t private_stroke_cred_t;
+
+/**
+ * private data of stroke_cred
+ */
+struct private_stroke_cred_t {
+
+	/**
+	 * public functions
+	 */
+	stroke_cred_t public;
+	
+	/**
+	 * list of trusted peer/signer/CA certificates (certificate_t)
+	 */
+	linked_list_t *certs;
+
+	/**
+	 * list of shared secrets (private_shared_key_t)
+	 */
+	linked_list_t *shared;
+
+	/**
+	 * list of private keys (private_key_t)
+	 */
+	linked_list_t *private;
+	
+	/**
+	 * mutex to lock lists above
+	 */
+	mutex_t *mutex;
+	
+	/**
+	 * cache CRLs to disk?
+	 */
+	bool cachecrl;
+};
+
+/**
+ * data to pass to various filters
+ */
+typedef struct {
+	private_stroke_cred_t *this;
+	identification_t *id;
+} id_data_t;
+
+/**
+ * destroy id enumerator data and unlock list
+ */
+static void id_data_destroy(id_data_t *data)
+{
+	data->this->mutex->unlock(data->this->mutex);
+	free(data);
+}
+
+/**
+ * filter function for private key enumerator
+ */
+static bool private_filter(id_data_t *data,
+						   private_key_t **in, private_key_t **out)
+{
+	identification_t *candidate;
+	id_type_t type;
+	
+	if (data->id == NULL)
+	{
+		*out = *in;
+		return TRUE;
+	}
+	type = data->id->get_type(data->id);
+	if (type == ID_KEY_ID)
+	{	/* handle ID_KEY_ID as a ID_PUBKEY_SHA1 */
+		type = ID_PUBKEY_SHA1;
+	}
+	candidate = (*in)->get_id(*in, type);
+	if (candidate &&
+		chunk_equals(candidate->get_encoding(candidate),
+					 data->id->get_encoding(data->id)))
+	{
+		*out = *in;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * Implements credential_set_t.create_private_enumerator
+ */
+static enumerator_t* create_private_enumerator(private_stroke_cred_t *this,
+							key_type_t type, identification_t *id)
+{
+	id_data_t *data;
+
+	data = malloc_thing(id_data_t);
+	data->this = this;
+	data->id = id;
+	
+	this->mutex->lock(this->mutex);
+	return enumerator_create_filter(this->private->create_enumerator(this->private),
+									(void*)private_filter, data,
+									(void*)id_data_destroy);
+}
+
+/**
+ * filter function for certs enumerator
+ */
+static bool certs_filter(id_data_t *data, certificate_t **in, certificate_t **out)
+{
+	public_key_t *public;
+	identification_t *candidate;
+	certificate_t *cert = *in;
+	certificate_type_t type = cert->get_type(cert);
+
+	if (type == CERT_X509_CRL || type == CERT_X509_AC)
+	{
+		return FALSE;
+	}
+
+	if (data->id == NULL || cert->has_subject(cert, data->id))
+	{
+		*out = *in;
+		return TRUE;
+	}
+	
+	public = (cert)->get_public_key(cert);
+	if (public)
+	{
+		candidate = public->get_id(public, data->id->get_type(data->id));
+		if (candidate && data->id->equals(data->id, candidate))
+		{
+			public->destroy(public);
+			*out = *in;
+			return TRUE;
+		}
+		public->destroy(public);
+	}
+	return FALSE;
+}
+
+/**
+ * filter function for crl enumerator
+ */
+static bool crl_filter(id_data_t *data, certificate_t **in, certificate_t **out)
+{
+	certificate_t *cert = *in;
+	
+	if (cert->get_type(cert) != CERT_X509_CRL)
+	{
+		return FALSE;
+	}
+
+	if (data->id == NULL || cert->has_issuer(cert, data->id))
+	{
+		*out = *in;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * filter function for attribute certificate enumerator
+ */
+static bool ac_filter(id_data_t *data, certificate_t **in, certificate_t **out)
+{
+	certificate_t *cert = *in;
+	
+	if (cert->get_type(cert) != CERT_X509_AC)
+	{
+		return FALSE;
+	}
+
+	if (data->id == NULL || cert->has_subject(cert, data->id))
+	{
+		*out = *in;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+/**
+ * Implements credential_set_t.create_cert_enumerator
+ */
+static enumerator_t* create_cert_enumerator(private_stroke_cred_t *this,
+							certificate_type_t cert, key_type_t key,
+							identification_t *id, bool trusted)
+{
+	id_data_t *data;
+	
+	if (cert == CERT_X509_CRL || cert == CERT_X509_AC)
+	{
+		if (trusted)
+		{
+			return NULL;
+		}
+		data = malloc_thing(id_data_t);
+		data->this = this;
+		data->id = id;
+		
+		this->mutex->lock(this->mutex);
+		return enumerator_create_filter(this->certs->create_enumerator(this->certs),
+					(cert == CERT_X509_CRL)? (void*)crl_filter : (void*)ac_filter,
+					data, (void*)id_data_destroy);
+	}
+	if (cert != CERT_X509 && cert != CERT_ANY)
+	{	/* we only have X509 certificates. TODO: ACs? */
+		return NULL;
+	}
+	data = malloc_thing(id_data_t);
+	data->this = this;
+	data->id = id;
+	
+	this->mutex->lock(this->mutex);
+	return enumerator_create_filter(this->certs->create_enumerator(this->certs),
+									(void*)certs_filter, data,
+									(void*)id_data_destroy);
+}
+
+typedef struct {
+	private_stroke_cred_t *this;
+	identification_t *me;
+	identification_t *other;
+	shared_key_type_t type;
+} shared_data_t;
+
+/**
+ * free shared key enumerator data and unlock list
+ */
+static void shared_data_destroy(shared_data_t *data)
+{
+	data->this->mutex->unlock(data->this->mutex);
+	free(data);
+}
+
+/**
+ * filter function for certs enumerator
+ */
+static bool shared_filter(shared_data_t *data,
+						  stroke_shared_key_t **in, shared_key_t **out,
+						  void **unused1, id_match_t *me,
+						  void **unused2, id_match_t *other)
+{
+	id_match_t my_match, other_match;
+	stroke_shared_key_t *stroke = *in;
+	shared_key_t *shared = &stroke->shared;
+
+	if (data->type != SHARED_ANY && shared->get_type(shared) != data->type)
+	{
+		return FALSE;
+	}
+	
+	my_match = stroke->has_owner(stroke, data->me);
+	other_match = stroke->has_owner(stroke, data->other);
+	if (!my_match && !other_match)
+	{
+		return FALSE;
+	}
+	*out = shared;
+	if (me)
+	{
+		*me = my_match;
+	}
+	if (other)
+	{
+		*other = other_match;
+	}
+	return TRUE;
+}
+
+/**
+ * Implements credential_set_t.create_shared_enumerator
+ */
+static enumerator_t* create_shared_enumerator(private_stroke_cred_t *this, 
+							shared_key_type_t type,	identification_t *me,
+							identification_t *other)
+{
+	shared_data_t *data = malloc_thing(shared_data_t);
+	
+	data->this = this;
+	data->me = me;
+	data->other = other;
+	data->type = type;
+	this->mutex->lock(this->mutex);
+	return enumerator_create_filter(this->shared->create_enumerator(this->shared),
+									(void*)shared_filter, data,
+									(void*)shared_data_destroy);
+}
+
+/**
+ * Add a certificate to chain
+ */
+static certificate_t* add_cert(private_stroke_cred_t *this, certificate_t *cert)
+{
+	certificate_t *current;
+	enumerator_t *enumerator;
+	bool new = TRUE;	
+
+	this->mutex->lock(this->mutex);
+	enumerator = this->certs->create_enumerator(this->certs);
+	while (enumerator->enumerate(enumerator, (void**)&current))
+	{
+		if (current->equals(current, cert))
+		{
+			/* cert already in queue */
+			cert->destroy(cert);
+			cert = current;
+			new = FALSE;
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	if (new)
+	{
+		this->certs->insert_last(this->certs, cert);
+	}
+	this->mutex->unlock(this->mutex);
+	return cert;
+}
+	
+/**
+ * Implementation of stroke_cred_t.load_ca.
+ */
+static certificate_t* load_ca(private_stroke_cred_t *this, char *filename)
+{
+	certificate_t *cert;
+	char path[PATH_MAX];
+	
+	if (*filename == '/')
+	{
+		snprintf(path, sizeof(path), "%s", filename);
+	}
+	else
+	{
+		snprintf(path, sizeof(path), "%s/%s", CA_CERTIFICATE_DIR, filename);
+	}
+	
+	cert = lib->creds->create(lib->creds,
+							  CRED_CERTIFICATE, CERT_X509,
+							  BUILD_FROM_FILE, path,
+							  BUILD_X509_FLAG, X509_CA,
+							  BUILD_END);
+	if (cert)
+	{
+		return (certificate_t*)add_cert(this, cert);
+	}
+	return NULL;
+}
+
+/**
+ * Add X.509 CRL to chain
+ */
+static bool add_crl(private_stroke_cred_t *this, crl_t* crl)
+{
+	certificate_t *current, *cert = &crl->certificate;
+	enumerator_t *enumerator;
+	bool new = TRUE, found = FALSE;	
+
+	this->mutex->lock(this->mutex);
+	enumerator = this->certs->create_enumerator(this->certs);
+	while (enumerator->enumerate(enumerator, (void**)&current))
+	{
+		if (current->get_type(current) == CERT_X509_CRL)
+		{
+			crl_t *crl_c = (crl_t*)current;
+			identification_t *authkey = crl->get_authKeyIdentifier(crl);
+			identification_t *authkey_c = crl_c->get_authKeyIdentifier(crl_c);
+
+			/* if compare authorityKeyIdentifiers if available */
+			if (authkey != NULL && authkey_c != NULL &&
+				authkey->equals(authkey, authkey_c))
+			{
+				found = TRUE;
+			}
+			else
+			{
+				identification_t *issuer = cert->get_issuer(cert);
+				identification_t *issuer_c = current->get_issuer(current);
+
+				/* otherwise compare issuer distinguished names */
+				if (issuer->equals(issuer, issuer_c))
+				{
+					found = TRUE;
+				}
+			}
+			if (found)
+			{
+				new = cert->is_newer(cert, current);
+				if (new)
+				{
+					this->certs->remove_at(this->certs, enumerator);
+				}
+				else
+				{
+					cert->destroy(cert);
+				}
+				break;
+			}
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	if (new)
+	{
+		this->certs->insert_last(this->certs, cert);
+	}
+	this->mutex->unlock(this->mutex);
+	return new;
+}
+
+/**
+ * Add X.509 attribute certificate to chain
+ */
+static bool add_ac(private_stroke_cred_t *this, ac_t* ac)
+{
+	certificate_t *cert = &ac->certificate;
+
+	this->mutex->lock(this->mutex);
+	this->certs->insert_last(this->certs, cert);
+	this->mutex->unlock(this->mutex);
+	return TRUE;
+}
+
+/**
+ * Implementation of stroke_cred_t.load_peer.
+ */
+static certificate_t* load_peer(private_stroke_cred_t *this, char *filename)
+{
+	certificate_t *cert;
+	char path[PATH_MAX];
+
+	if (*filename == '/')
+	{
+		snprintf(path, sizeof(path), "%s", filename);
+	}
+	else
+	{
+		snprintf(path, sizeof(path), "%s/%s", CERTIFICATE_DIR, filename);
+	}
+	
+	cert = lib->creds->create(lib->creds,
+							  CRED_CERTIFICATE, CERT_X509,
+							  BUILD_FROM_FILE, path,
+							  BUILD_X509_FLAG, 0,
+							  BUILD_END);
+	if (cert)
+	{
+		cert = add_cert(this, cert);
+		return cert->get_ref(cert);
+	}
+	return NULL;
+}
+
+/**
+ * load trusted certificates from a directory
+ */
+static void load_certdir(private_stroke_cred_t *this, char *path,
+						 certificate_type_t type, x509_flag_t flag)
+{
+	struct stat st;
+	char *file;
+	
+	enumerator_t *enumerator = enumerator_create_directory(path);
+
+	if (!enumerator)
+	{
+		DBG1(DBG_CFG, "  reading directory failed");
+		return;
+	}
+
+	while (enumerator->enumerate(enumerator, NULL, &file, &st))
+	{
+		certificate_t *cert;
+
+		if (!S_ISREG(st.st_mode))
+		{
+			/* skip special file */
+			continue;
+		}
+		switch (type)
+		{
+			case CERT_X509:
+				cert = lib->creds->create(lib->creds,
+										  CRED_CERTIFICATE, CERT_X509,
+										  BUILD_FROM_FILE, file,
+										  BUILD_X509_FLAG, flag,
+										  BUILD_END);
+				if (cert)
+				{
+					add_cert(this, cert);
+				}
+				break;
+			case CERT_X509_CRL:
+				cert = lib->creds->create(lib->creds,
+										  CRED_CERTIFICATE, CERT_X509_CRL,
+										  BUILD_FROM_FILE, file,
+										  BUILD_END);
+				if (cert)
+				{
+					add_crl(this, (crl_t*)cert);
+				}
+				break;
+			case CERT_X509_AC:
+				cert = lib->creds->create(lib->creds,
+										  CRED_CERTIFICATE, CERT_X509_AC,
+										  BUILD_FROM_FILE, file,
+										  BUILD_END);
+				if (cert)
+				{
+					add_ac(this, (ac_t*)cert);
+				}
+				break;
+			default:
+				break;	
+		}
+	}
+	enumerator->destroy(enumerator);
+}
+
+/**
+ * Implementation of credential_set_t.cache_cert.
+ */
+static void cache_cert(private_stroke_cred_t *this, certificate_t *cert)
+{
+	if (cert->get_type(cert) == CERT_X509_CRL && this->cachecrl)
+	{
+		/* CRLs get written to /etc/ipsec.d/crls/authkeyId.crl */
+		crl_t *crl = (crl_t*)cert;
+	
+		cert->get_ref(cert);
+		if (add_crl(this, crl))
+		{
+			char buf[256];
+			chunk_t chunk, hex;
+			identification_t *id;
+			
+			id = crl->get_authKeyIdentifier(crl);
+			chunk = id->get_encoding(id);
+			hex = chunk_to_hex(chunk, NULL, FALSE);
+			snprintf(buf, sizeof(buf), "%s/%s.crl", CRL_DIR, hex);
+			free(hex.ptr);
+			
+			chunk = cert->get_encoding(cert);
+			if (chunk_write(chunk, buf, 022, TRUE))
+			{
+				DBG1(DBG_CFG, "  written crl to '%s'", buf);
+			}
+			else
+			{
+				DBG1(DBG_CFG, "  writing crl to '%s' failed", buf);
+			}
+			free(chunk.ptr);
+		}
+	}
+}
+
+/**
+ * Implementation of stroke_cred_t.cachecrl.
+ */
+static void cachecrl(private_stroke_cred_t *this, bool enabled)
+{
+	DBG1(DBG_CFG, "crl caching to %s %s",
+		 CRL_DIR, enabled ? "enabled" : "disabled");
+	this->cachecrl = enabled;
+}
+
+
+/**
+ * Convert a string of characters into a binary secret
+ * A string between single or double quotes is treated as ASCII characters
+ * A string prepended by 0x is treated as HEX and prepended by 0s as Base64
+ */
+static err_t extract_secret(chunk_t *secret, chunk_t *line)
+{
+	chunk_t raw_secret;
+	char delimiter = ' ';
+	bool quotes = FALSE;
+
+	if (!eat_whitespace(line))
+	{
+		return "missing secret";
+	}
+
+	if (*line->ptr == '\'' || *line->ptr == '"')
+	{
+		quotes = TRUE;
+		delimiter = *line->ptr;
+		line->ptr++;  line->len--;
+	}
+
+	if (!extract_token(&raw_secret, delimiter, line))
+	{
+		if (delimiter == ' ')
+		{
+			raw_secret = *line;
+		}
+		else
+		{
+			return "missing second delimiter";
+		}
+	}
+
+	if (quotes)
+	{	
+		/* treat as an ASCII string */
+		*secret = chunk_clone(raw_secret);
+		return NULL;
+	}
+	/* treat 0x as hex, 0s as base64 */
+	if (raw_secret.len > 2)
+	{
+		if (strncasecmp("0x", raw_secret.ptr, 2) == 0)
+		{
+			*secret = chunk_from_hex(chunk_skip(raw_secret, 2), NULL);
+			return NULL;
+		}
+		if (strncasecmp("0s", raw_secret.ptr, 2) == 0)
+		{
+			*secret = chunk_from_base64(chunk_skip(raw_secret, 2), NULL);
+			return NULL;
+		}
+	}
+	*secret = chunk_clone(raw_secret);
+	return NULL;
+}
+
+/**
+ * reload ipsec.secrets
+ */
+static void load_secrets(private_stroke_cred_t *this)
+{
+	size_t bytes;
+	int line_nr = 0;
+	chunk_t chunk, src, line;
+	FILE *fd;
+	private_key_t *private;
+	shared_key_t *shared;
+
+	DBG1(DBG_CFG, "loading secrets from '%s'", SECRETS_FILE);
+
+	fd = fopen(SECRETS_FILE, "r");
+	if (fd == NULL)
+	{
+		DBG1(DBG_CFG, "opening secrets file '%s' failed");
+		return;
+	}
+
+	/* TODO: do error checks */
+	fseek(fd, 0, SEEK_END);
+	chunk.len = ftell(fd);
+	rewind(fd);
+	chunk.ptr = malloc(chunk.len);
+	bytes = fread(chunk.ptr, 1, chunk.len, fd);
+	fclose(fd);
+	src = chunk;
+
+	this->mutex->lock(this->mutex);
+	while (this->shared->remove_last(this->shared,
+		 								   (void**)&shared) == SUCCESS)
+	{
+		shared->destroy(shared);
+	}
+	while (this->private->remove_last(this->private,
+		 								    (void**)&private) == SUCCESS)
+	{
+		private->destroy(private);
+	}
+	
+	while (fetchline(&src, &line))
+	{
+		chunk_t ids, token;
+		shared_key_type_t type;
+
+		line_nr++;
+
+		if (!eat_whitespace(&line))
+		{
+			continue;
+		}
+		if (!extract_last_token(&ids, ':', &line))
+		{
+			DBG1(DBG_CFG, "line %d: missing ':' separator", line_nr);
+			goto error;
+		}
+		/* NULL terminate the ids string by replacing the : separator */
+		*(ids.ptr + ids.len) = '\0';
+
+		if (!eat_whitespace(&line) || !extract_token(&token, ' ', &line))
+		{
+			DBG1(DBG_CFG, "line %d: missing token", line_nr);
+			goto error;
+		}
+		if (match("RSA", &token) || match("ECDSA", &token))
+		{
+			char path[PATH_MAX];
+			chunk_t filename;
+			chunk_t secret = chunk_empty;
+			private_key_t *key;
+			bool pgp = FALSE;
+			chunk_t chunk = chunk_empty;
+			key_type_t key_type = match("RSA", &token) ? KEY_RSA : KEY_ECDSA;
+
+			err_t ugh = extract_value(&filename, &line);
+
+			if (ugh != NULL)
+			{
+				DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
+				goto error;
+			}
+			if (filename.len == 0)
+			{
+				DBG1(DBG_CFG, "line %d: empty filename", line_nr);
+				goto error;
+			}
+			if (*filename.ptr == '/')
+			{
+				/* absolute path name */
+				snprintf(path, sizeof(path), "%.*s", filename.len, filename.ptr);
+			}
+			else
+			{
+				/* relative path name */
+				snprintf(path, sizeof(path), "%s/%.*s", PRIVATE_KEY_DIR, 
+						 filename.len, filename.ptr);
+			}
+
+			/* check for optional passphrase */
+			if (eat_whitespace(&line))
+			{
+				ugh = extract_secret(&secret, &line);
+				if (ugh != NULL)
+				{
+					DBG1(DBG_CFG, "line %d: malformed passphrase: %s", line_nr, ugh);
+					goto error;
+				}
+			}
+
+			if (pem_asn1_load_file(path, &secret, &chunk, &pgp))
+			{
+				key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY, key_type,
+										 BUILD_BLOB_ASN1_DER, chunk, BUILD_END);
+				if (key)
+				{
+					DBG1(DBG_CFG, "  loaded private key file '%s'", path);
+					this->private->insert_last(this->private, key);
+				}
+			}
+			chunk_clear(&secret);
+		}
+		else if ((match("PSK", &token) && (type = SHARED_IKE)) ||
+				 (match("EAP", &token) && (type = SHARED_EAP)) ||
+				 (match("XAUTH", &token) && (type = SHARED_EAP)) ||
+				 (match("PIN", &token) && (type = SHARED_PIN)))
+		{
+			stroke_shared_key_t *shared_key;
+			chunk_t secret = chunk_empty;
+			bool any = TRUE;
+
+			err_t ugh = extract_secret(&secret, &line);
+			if (ugh != NULL)
+			{
+				DBG1(DBG_CFG, "line %d: malformed secret: %s", line_nr, ugh);
+				goto error;
+			}
+			shared_key = stroke_shared_key_create(type, secret);
+			DBG1(DBG_CFG, "  loaded %N secret for %s", shared_key_type_names, type,
+				 ids.len > 0 ? (char*)ids.ptr : "%any");
+			DBG4(DBG_CFG, "  secret: %#B", &secret);
+			
+			this->shared->insert_last(this->shared, shared_key);
+			while (ids.len > 0)
+			{
+				chunk_t id;
+				identification_t *peer_id;
+
+				ugh = extract_value(&id, &ids);
+				if (ugh != NULL)
+				{
+					DBG1(DBG_CFG, "line %d: %s", line_nr, ugh);
+					goto error;
+				}
+				if (id.len == 0)
+				{
+					continue;
+				}
+
+				/* NULL terminate the ID string */
+				*(id.ptr + id.len) = '\0';
+
+				peer_id = identification_create_from_string(id.ptr);
+				if (peer_id == NULL)
+				{
+					DBG1(DBG_CFG, "line %d: malformed ID: %s", line_nr, id.ptr);
+					goto error;
+				}
+				if (peer_id->get_type(peer_id) == ID_ANY)
+				{
+					peer_id->destroy(peer_id);
+					continue;
+				}
+				
+				shared_key->add_owner(shared_key, peer_id);
+				any = FALSE;
+			}
+			if (any)
+			{
+				shared_key->add_owner(shared_key,
+					identification_create_from_encoding(ID_ANY, chunk_empty));
+			}
+		}
+		else
+		{
+			DBG1(DBG_CFG, "line %d: token must be either "
+				 "RSA, EC, PSK, EAP, or PIN", line_nr);
+			goto error;
+		}
+	}
+error:
+	this->mutex->unlock(this->mutex);
+	chunk_clear(&chunk);
+}
+
+/**
+ * load all certificates from ipsec.d
+ */
+static void load_certs(private_stroke_cred_t *this)
+{
+	DBG1(DBG_CFG, "loading ca certificates from '%s'",
+		 CA_CERTIFICATE_DIR);
+	load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
+
+	DBG1(DBG_CFG, "loading aa certificates from '%s'",
+		 AA_CERTIFICATE_DIR);
+	load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
+
+	DBG1(DBG_CFG, "loading ocsp signer certificates from '%s'",
+		 OCSP_CERTIFICATE_DIR);
+	load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509, X509_OCSP_SIGNER);
+
+	DBG1(DBG_CFG, "loading attribute certificates from '%s'",
+		 ATTR_CERTIFICATE_DIR);
+	load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
+
+	DBG1(DBG_CFG, "loading crls from '%s'",
+		 CRL_DIR);
+	load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
+}
+
+/**
+ * Implementation of stroke_cred_t.reread.
+ */
+static void reread(private_stroke_cred_t *this, stroke_msg_t *msg)
+{
+	if (msg->reread.flags & REREAD_SECRETS)
+	{
+		DBG1(DBG_CFG, "rereading secrets");
+		load_secrets(this);
+	}
+	if (msg->reread.flags & REREAD_CACERTS)
+	{
+		DBG1(DBG_CFG, "rereading ca certificates from '%s'",
+			 CA_CERTIFICATE_DIR);
+		load_certdir(this, CA_CERTIFICATE_DIR, CERT_X509, X509_CA);
+	}
+	if (msg->reread.flags & REREAD_OCSPCERTS)
+	{
+		DBG1(DBG_CFG, "rereading ocsp signer certificates from '%s'",
+			 OCSP_CERTIFICATE_DIR);
+		load_certdir(this, OCSP_CERTIFICATE_DIR, CERT_X509,
+			 X509_OCSP_SIGNER);
+	}
+	if (msg->reread.flags & REREAD_AACERTS)
+	{
+		DBG1(DBG_CFG, "rereading aa certificates from '%s'",
+			 AA_CERTIFICATE_DIR);
+		load_certdir(this, AA_CERTIFICATE_DIR, CERT_X509, X509_AA);
+	}
+	if (msg->reread.flags & REREAD_ACERTS)
+	{
+		DBG1(DBG_CFG, "rereading attribute certificates from '%s'",
+			 ATTR_CERTIFICATE_DIR);
+		load_certdir(this, ATTR_CERTIFICATE_DIR, CERT_X509_AC, 0);
+	}
+	if (msg->reread.flags & REREAD_CRLS)
+	{
+		DBG1(DBG_CFG, "rereading crls from '%s'",
+			 CRL_DIR);
+		load_certdir(this, CRL_DIR, CERT_X509_CRL, 0);
+	}
+}
+
+/**
+ * Implementation of stroke_cred_t.destroy
+ */
+static void destroy(private_stroke_cred_t *this)
+{
+	this->certs->destroy_offset(this->certs, offsetof(certificate_t, destroy));
+	this->shared->destroy_offset(this->shared, offsetof(shared_key_t, destroy));
+	this->private->destroy_offset(this->private, offsetof(private_key_t, destroy));
+	this->mutex->destroy(this->mutex);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+stroke_cred_t *stroke_cred_create()
+{
+	private_stroke_cred_t *this = malloc_thing(private_stroke_cred_t);
+	
+	this->public.set.create_private_enumerator = (void*)create_private_enumerator;
+	this->public.set.create_cert_enumerator = (void*)create_cert_enumerator;
+	this->public.set.create_shared_enumerator = (void*)create_shared_enumerator;
+	this->public.set.create_cdp_enumerator = (void*)return_null;
+	this->public.set.cache_cert = (void*)cache_cert;
+	this->public.reread = (void(*)(stroke_cred_t*, stroke_msg_t *msg))reread;
+	this->public.load_ca = (certificate_t*(*)(stroke_cred_t*, char *filename))load_ca;
+	this->public.load_peer = (certificate_t*(*)(stroke_cred_t*, char *filename))load_peer;
+	this->public.cachecrl = (void(*)(stroke_cred_t*, bool enabled))cachecrl;
+	this->public.destroy = (void(*)(stroke_cred_t*))destroy;
+	
+	this->certs = linked_list_create();
+	this->shared = linked_list_create();
+	this->private = linked_list_create();
+	this->mutex = mutex_create(MUTEX_RECURSIVE);
+
+	load_certs(this);
+	load_secrets(this);
+	
+	this->cachecrl = FALSE;
+	
+	return &this->public;
+}
+