[thirdparty/strongswan.git] / src / libcharon / plugins / tnccs_20 / messages / pb_remediation_parameters_msg.c

/*
 * Copyright (C) 2010 Andreas Steffen
 * HSR 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.
 */

#include "pb_remediation_parameters_msg.h"

#include <bio/bio_writer.h>
#include <bio/bio_reader.h>
#include <utils/debug.h>

ENUM(pb_tnc_remed_param_type_names, PB_REMEDIATION_URI, PB_REMEDIATION_STRING,
	"Remediation-URI",
	"Remediation-String"
);

typedef struct private_pb_remediation_parameters_msg_t private_pb_remediation_parameters_msg_t;

/**
 *   PB-Remediation-Parameters message (see section 4.8 of RFC 5793)
 *
 *      0                   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
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *     |    Reserved   |       Remediation Parameters Vendor ID        |
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *     |                  Remediation Parameters Type                  |
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *     |            Remediation Parameters (Variable Length)           |
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *
 *     0                   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
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *     |                   Remediation String Length                   |
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *     |                Remediation String (Variable Length)           |
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *     | Lang Code Len |  Remediation String Lang Code (Variable Len)  |
 *     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 */

/**
 * Private data of a pb_remediation_parameters_msg_t object.
 *
 */
struct private_pb_remediation_parameters_msg_t {
	/**
	 * Public pb_remediation_parameters_msg_t interface.
	 */
	pb_remediation_parameters_msg_t public;

	/**
	 * PB-TNC message type
	 */
	pb_tnc_msg_type_t type;

	/**
	 * Remediation Parameters Vendor ID
	 */
	u_int32_t vendor_id;

	/**
	 * Remediation Parameters Type
	 */
	u_int32_t parameters_type;

	/**
	 * Remediation Parameters string
	 */
	chunk_t remediation_string;

	/**
	 * Language code
	 */
	chunk_t language_code;

	/**
	 * Encoded message
	 */
	chunk_t encoding;
};

METHOD(pb_tnc_msg_t, get_type, pb_tnc_msg_type_t,
	private_pb_remediation_parameters_msg_t *this)
{
	return this->type;
}

METHOD(pb_tnc_msg_t, get_encoding, chunk_t,
	private_pb_remediation_parameters_msg_t *this)
{
	return this->encoding;
}

METHOD(pb_tnc_msg_t, build, void,
	private_pb_remediation_parameters_msg_t *this)
{
	bio_writer_t *writer;

	if (this->encoding.ptr)
	{
		return;
	}
	writer = bio_writer_create(64);
	writer->write_uint32(writer, this->vendor_id);
	writer->write_uint32(writer, this->parameters_type);
	writer->write_data32(writer, this->remediation_string);
	writer->write_data8 (writer, this->language_code);

	this->encoding = writer->get_buf(writer);
	this->encoding = chunk_clone(this->encoding);
	writer->destroy(writer);
}

METHOD(pb_tnc_msg_t, process, status_t,
	private_pb_remediation_parameters_msg_t *this, u_int32_t *offset)
{
	bio_reader_t *reader;

	/* process message */
	reader = bio_reader_create(this->encoding);
	reader->read_uint32(reader, &this->vendor_id);
	reader->read_uint32(reader, &this->parameters_type);

	if (!reader->read_data32(reader, &this->remediation_string))
	{
		DBG1(DBG_TNC, "could not parse remediation string");
		reader->destroy(reader);
		*offset = 8;
		return FAILED;
	};
	this->remediation_string = chunk_clone(this->remediation_string);

	if (this->remediation_string.len &&
		this->remediation_string.ptr[this->remediation_string.len-1] == '\0')
	{
		DBG1(DBG_TNC, "remediation string must not be null terminated");
		reader->destroy(reader);
		*offset = 11 + this->remediation_string.len;
		return FAILED;
	}

	if (!reader->read_data8(reader, &this->language_code))
	{
		DBG1(DBG_TNC, "could not parse language code");
		reader->destroy(reader);
		*offset = 12 + this->remediation_string.len;
		return FAILED;
	};
	this->language_code = chunk_clone(this->language_code);
	reader->destroy(reader);

	if (this->language_code.len &&
		this->language_code.ptr[this->language_code.len-1] == '\0')
	{
		DBG1(DBG_TNC, "language code must not be null terminated");
		*offset = 12 + this->remediation_string.len + this->language_code.len;
		return FAILED;
	}

	return SUCCESS;
}

METHOD(pb_tnc_msg_t, destroy, void,
	private_pb_remediation_parameters_msg_t *this)
{
	free(this->encoding.ptr);
	free(this->remediation_string.ptr);
	free(this->language_code.ptr);
	free(this);
}

METHOD(pb_remediation_parameters_msg_t, get_vendor_id, u_int32_t,
	private_pb_remediation_parameters_msg_t *this, u_int32_t *type)
{
	*type = this->parameters_type;
	return this->vendor_id;
}

METHOD(pb_remediation_parameters_msg_t, get_remediation_string, chunk_t,
	private_pb_remediation_parameters_msg_t *this)
{
	return this->remediation_string;
}

METHOD(pb_remediation_parameters_msg_t, get_language_code, chunk_t,
	private_pb_remediation_parameters_msg_t *this)
{
	return this->language_code;
}

/**
 * See header
 */
pb_tnc_msg_t *pb_remediation_parameters_msg_create_from_data(chunk_t data)
{
	private_pb_remediation_parameters_msg_t *this;

	INIT(this,
		.public = {
			.pb_interface = {
				.get_type = _get_type,
				.get_encoding = _get_encoding,
				.build = _build,
				.process = _process,
				.destroy = _destroy,
			},
			.get_vendor_id = _get_vendor_id,
			.get_remediation_string = _get_remediation_string,
			.get_language_code = _get_language_code,
		},
		.type = PB_MSG_REASON_STRING,
		.encoding = chunk_clone(data),
	);

	return &this->public.pb_interface;
}

/**
 * See header
 */
pb_tnc_msg_t* pb_remediation_parameters_msg_create(u_int32_t vendor_id,
												   u_int32_t type,
												   chunk_t remediation_string,
												   chunk_t language_code)
{
	private_pb_remediation_parameters_msg_t *this;

	INIT(this,
		.public = {
			.pb_interface = {
				.get_type = _get_type,
				.get_encoding = _get_encoding,
				.build = _build,
				.process = _process,
				.destroy = _destroy,
			},
			.get_vendor_id = _get_vendor_id,
			.get_remediation_string = _get_remediation_string,
			.get_language_code = _get_language_code,
		},
		.type = PB_MSG_REASON_STRING,
		.vendor_id = vendor_id,
		.parameters_type = type,
		.remediation_string = chunk_clone(remediation_string),
		.language_code = chunk_clone(language_code),
	);

	return &this->public.pb_interface;
}
Commit	Line	Data
54eb669d AS	1	/*
	2	* Copyright (C) 2010 Andreas Steffen
	3	* HSR Hochschule fuer Technik Rapperswil
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License as published by the
	7	* Free Software Foundation; either version 2 of the License, or (at your
	8	* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	12	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	13	* for more details.
	14	*/
	15
	16	#include "pb_remediation_parameters_msg.h"
	17
7e432eff AS	18	#include <bio/bio_writer.h>
7e432eff AS	19	#include <bio/bio_reader.h>
f05b4272	20	#include <utils/debug.h>
54eb669d AS	21
	22	ENUM(pb_tnc_remed_param_type_names, PB_REMEDIATION_URI, PB_REMEDIATION_STRING,
	23	"Remediation-URI",
	24	"Remediation-String"
	25	);
	26
	27	typedef struct private_pb_remediation_parameters_msg_t private_pb_remediation_parameters_msg_t;
	28
	29	/**
	30	* PB-Remediation-Parameters message (see section 4.8 of RFC 5793)
	31	*
	32	* 0 1 2 3
	33	* 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
	34	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	35	* \| Reserved \| Remediation Parameters Vendor ID \|
	36	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	37	* \| Remediation Parameters Type \|
	38	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	39	* \| Remediation Parameters (Variable Length) \|
	40	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	41	*
	42	* 0 1 2 3
	43	* 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
	44	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	45	* \| Remediation String Length \|
	46	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	47	* \| Remediation String (Variable Length) \|
	48	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	49	* \| Lang Code Len \| Remediation String Lang Code (Variable Len) \|
	50	* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
	51	*/
	52
	53	/**
d0eb2233	54	* Private data of a pb_remediation_parameters_msg_t object.
54eb669d AS	55	*
	56	*/
	57	struct private_pb_remediation_parameters_msg_t {
	58	/**
	59	* Public pb_remediation_parameters_msg_t interface.
	60	*/
	61	pb_remediation_parameters_msg_t public;
	62
	63	/**
	64	* PB-TNC message type
	65	*/
	66	pb_tnc_msg_type_t type;
	67
	68	/**
	69	* Remediation Parameters Vendor ID
	70	*/
	71	u_int32_t vendor_id;
	72
	73	/**
	74	* Remediation Parameters Type
	75	*/
	76	u_int32_t parameters_type;
	77
	78	/**
	79	* Remediation Parameters string
	80	*/
	81	chunk_t remediation_string;
	82
	83	/**
	84	* Language code
	85	*/
	86	chunk_t language_code;
	87
	88	/**
	89	* Encoded message
	90	*/
	91	chunk_t encoding;
	92	};
	93
	94	METHOD(pb_tnc_msg_t, get_type, pb_tnc_msg_type_t,
	95	private_pb_remediation_parameters_msg_t *this)
	96	{
	97	return this->type;
	98	}
	99
	100	METHOD(pb_tnc_msg_t, get_encoding, chunk_t,
	101	private_pb_remediation_parameters_msg_t *this)
	102	{
	103	return this->encoding;
	104	}
	105
	106	METHOD(pb_tnc_msg_t, build, void,
	107	private_pb_remediation_parameters_msg_t *this)
	108	{
7e432eff	109	bio_writer_t *writer;
54eb669d	110
3a16bec8 AS	111	if (this->encoding.ptr)
	112	{
	113	return;
	114	}
7e432eff	115	writer = bio_writer_create(64);
54eb669d AS	116	writer->write_uint32(writer, this->vendor_id);
	117	writer->write_uint32(writer, this->parameters_type);
	118	writer->write_data32(writer, this->remediation_string);
	119	writer->write_data8 (writer, this->language_code);
	120
54eb669d AS	121	this->encoding = writer->get_buf(writer);
	122	this->encoding = chunk_clone(this->encoding);
	123	writer->destroy(writer);
	124	}
	125
	126	METHOD(pb_tnc_msg_t, process, status_t,
10a6019e	127	private_pb_remediation_parameters_msg_t this, u_int32_t offset)
54eb669d	128	{
7e432eff	129	bio_reader_t *reader;
54eb669d AS	130
54eb669d AS	131	/* process message */
7e432eff	132	reader = bio_reader_create(this->encoding);
54eb669d AS	133	reader->read_uint32(reader, &this->vendor_id);
	134	reader->read_uint32(reader, &this->parameters_type);
	135
	136	if (!reader->read_data32(reader, &this->remediation_string))
	137	{
	138	DBG1(DBG_TNC, "could not parse remediation string");
	139	reader->destroy(reader);
	140	*offset = 8;
	141	return FAILED;
	142	};
	143	this->remediation_string = chunk_clone(this->remediation_string);
	144
	145	if (this->remediation_string.len &&
	146	this->remediation_string.ptr[this->remediation_string.len-1] == '\0')
	147	{
	148	DBG1(DBG_TNC, "remediation string must not be null terminated");
	149	reader->destroy(reader);
	150	*offset = 11 + this->remediation_string.len;
	151	return FAILED;
	152	}
	153
	154	if (!reader->read_data8(reader, &this->language_code))
	155	{
	156	DBG1(DBG_TNC, "could not parse language code");
	157	reader->destroy(reader);
	158	*offset = 12 + this->remediation_string.len;
	159	return FAILED;
	160	};
	161	this->language_code = chunk_clone(this->language_code);
	162	reader->destroy(reader);
	163
	164	if (this->language_code.len &&
	165	this->language_code.ptr[this->language_code.len-1] == '\0')
	166	{
	167	DBG1(DBG_TNC, "language code must not be null terminated");
	168	*offset = 12 + this->remediation_string.len + this->language_code.len;
	169	return FAILED;
	170	}
	171
	172	return SUCCESS;
	173	}
	174
	175	METHOD(pb_tnc_msg_t, destroy, void,
	176	private_pb_remediation_parameters_msg_t *this)
	177	{
	178	free(this->encoding.ptr);
	179	free(this->remediation_string.ptr);
	180	free(this->language_code.ptr);
	181	free(this);
	182	}
	183
	184	METHOD(pb_remediation_parameters_msg_t, get_vendor_id, u_int32_t,
	185	private_pb_remediation_parameters_msg_t this, u_int32_t type)
	186	{
	187	*type = this->parameters_type;
	188	return this->vendor_id;
	189	}
	190
	191	METHOD(pb_remediation_parameters_msg_t, get_remediation_string, chunk_t,
	192	private_pb_remediation_parameters_msg_t *this)
	193	{
	194	return this->remediation_string;
	195	}
	196
197	METHOD(pb_remediation_parameters_msg_t, get_language_code, chunk_t,
198	private_pb_remediation_parameters_msg_t *this)
199	{
200	return this->language_code;
201	}
202
203	/**
204	* See header
205	*/
206	pb_tnc_msg_t *pb_remediation_parameters_msg_create_from_data(chunk_t data)
207	{
208	private_pb_remediation_parameters_msg_t *this;
209
210	INIT(this,
211	.public = {
212	.pb_interface = {
213	.get_type = _get_type,
214	.get_encoding = _get_encoding,
215	.build = _build,
216	.process = _process,
217	.destroy = _destroy,
218	},
219	.get_vendor_id = _get_vendor_id,
220	.get_remediation_string = _get_remediation_string,
221	.get_language_code = _get_language_code,
222	},
223	.type = PB_MSG_REASON_STRING,
224	.encoding = chunk_clone(data),
225	);
226
227	return &this->public.pb_interface;
228	}
229
230	/**
231	* See header
232	*/
233	pb_tnc_msg_t* pb_remediation_parameters_msg_create(u_int32_t vendor_id,
234	u_int32_t type,
235	chunk_t remediation_string,
236	chunk_t language_code)
237	{
238	private_pb_remediation_parameters_msg_t *this;
239
240	INIT(this,
241	.public = {
242	.pb_interface = {
243	.get_type = _get_type,
244	.get_encoding = _get_encoding,
245	.build = _build,
246	.process = _process,
247	.destroy = _destroy,
248	},
249	.get_vendor_id = _get_vendor_id,
250	.get_remediation_string = _get_remediation_string,
251	.get_language_code = _get_language_code,
252	},
253	.type = PB_MSG_REASON_STRING,
254	.vendor_id = vendor_id,
255	.parameters_type = type,
256	.remediation_string = chunk_clone(remediation_string),
257	.language_code = chunk_clone(language_code),
258	);
259
260	return &this->public.pb_interface;
261	}