--- /dev/null
+/*
+ * Copyright (C) 2011 Martin Willi
+ * Copyright (C) 2011 revosec AG
+ *
+ * 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.
+ */
+
+#include <stddef.h>
+
+#include "hash_payload.h"
+
+#include <encoding/payloads/encodings.h>
+
+typedef struct private_hash_payload_t private_hash_payload_t;
+
+/**
+ * Private data of an hash_payload_t object.
+ */
+struct private_hash_payload_t {
+
+ /**
+ * Public hash_payload_t interface.
+ */
+ hash_payload_t public;
+
+ /**
+ * Next payload type.
+ */
+ u_int8_t next_payload;
+
+ /**
+ * Reserved byte
+ */
+ u_int8_t reserved;
+
+ /**
+ * Length of this payload.
+ */
+ u_int16_t payload_length;
+
+ /**
+ * The contained hash value.
+ */
+ chunk_t hash;
+};
+
+/**
+ * Encoding rules for an IKEv1 hash payload
+ */
+static encoding_rule_t encodings[] = {
+ /* 1 Byte next payload type, stored in the field next_payload */
+ { U_INT_8, offsetof(private_hash_payload_t, next_payload) },
+ { RESERVED_BYTE, offsetof(private_hash_payload_t, reserved) },
+ /* Length of the whole payload*/
+ { PAYLOAD_LENGTH, offsetof(private_hash_payload_t, payload_length) },
+ /* Hash Data is from variable size */
+ { HASH_DATA, offsetof(private_hash_payload_t, hash) },
+};
+
+/*
+ 1 2 3
+ 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! Next Payload ! RESERVED ! Payload Length !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ ! !
+ ~ Hash Data ~
+ ! !
+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+*/
+
+METHOD(payload_t, verify, status_t,
+ private_hash_payload_t *this)
+{
+ return SUCCESS;
+}
+
+METHOD(payload_t, get_encoding_rules, int,
+ private_hash_payload_t *this, encoding_rule_t **rules)
+{
+ *rules = encodings;
+ return countof(encodings);
+}
+
+METHOD(payload_t, get_header_length, int,
+ private_hash_payload_t *this)
+{
+ return 4;
+}
+
+METHOD(payload_t, get_type, payload_type_t,
+ private_hash_payload_t *this)
+{
+ return HASH_V1;
+}
+
+METHOD(payload_t, get_next_type, payload_type_t,
+ private_hash_payload_t *this)
+{
+ return this->next_payload;
+}
+
+METHOD(payload_t, set_next_type, void,
+ private_hash_payload_t *this, payload_type_t type)
+{
+ this->next_payload = type;
+}
+
+METHOD(payload_t, get_length, size_t,
+ private_hash_payload_t *this)
+{
+ return this->payload_length;
+}
+
+METHOD(hash_payload_t, set_hash, void,
+ private_hash_payload_t *this, chunk_t hash)
+{
+ free(this->hash.ptr);
+ this->hash = chunk_clone(hash);
+ this->payload_length = get_header_length(this) + hash.len;
+}
+
+METHOD(hash_payload_t, get_hash, chunk_t,
+ private_hash_payload_t *this)
+{
+ return this->hash;
+}
+
+METHOD2(payload_t, hash_payload_t, destroy, void,
+ private_hash_payload_t *this)
+{
+ free(this->hash.ptr);
+ free(this);
+}
+
+/*
+ * Described in header
+ */
+hash_payload_t *hash_payload_create(payload_type_t type)
+{
+ private_hash_payload_t *this;
+
+ INIT(this,
+ .public = {
+ .payload_interface = {
+ .verify = _verify,
+ .get_encoding_rules = _get_encoding_rules,
+ .get_header_length = _get_header_length,
+ .get_length = _get_length,
+ .get_next_type = _get_next_type,
+ .set_next_type = _set_next_type,
+ .get_type = _get_type,
+ .destroy = _destroy,
+ },
+ .set_hash = _set_hash,
+ .get_hash = _get_hash,
+ .destroy = _destroy,
+ },
+ .next_payload = NO_PAYLOAD,
+ .payload_length = get_header_length(this),
+ );
+ return &this->public;
+}
--- /dev/null
+/*
+ * Copyright (C) 2011 Martin Willi
+ * Copyright (C) 2011 revosec AG
+ *
+ * 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.
+ */
+
+/**
+ * @defgroup hash_payload hash_payload
+ * @{ @ingroup payloads
+ */
+
+#ifndef HASH_PAYLOAD_H_
+#define HASH_PAYLOAD_H_
+
+typedef struct hash_payload_t hash_payload_t;
+
+#include <library.h>
+#include <encoding/payloads/payload.h>
+
+/**
+ * Object representing an IKEv1 hash payload.
+ */
+struct hash_payload_t {
+
+ /**
+ * The payload_t interface.
+ */
+ payload_t payload_interface;
+
+ /**
+ * Set the hash value.
+ *
+ * @param hash chunk containing the hash, will be cloned
+ */
+ void (*set_hash) (hash_payload_t *this, chunk_t hash);
+
+ /**
+ * Get the hash value.
+ *
+ * @return chunkt to internal hash data
+ */
+ chunk_t (*get_hash) (hash_payload_t *this);
+
+ /**
+ * Destroys an hash_payload_t object.
+ */
+ void (*destroy) (hash_payload_t *this);
+};
+
+/**
+ * Creates an empty hash_payload_t object.
+ *
+ * @return hash_payload_t object
+ */
+hash_payload_t *hash_payload_create();
+
+#endif /** HASH_PAYLOAD_H_ @}*/
projects / thirdparty / strongswan.git / commitdiff
