get platform info from IMC

2011-09-08 12:08:17 +02:00
parent 5ab99898c6
commit 863f59c560
8 changed files with 473 additions and 53 deletions
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2011 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 "ietf_attr_product_info.h"
+
+#include <pa_tnc/pa_tnc_msg.h>
+#include <bio/bio_writer.h>
+#include <bio/bio_reader.h>
+#include <debug.h>
+
+typedef struct private_ietf_attr_product_info_t private_ietf_attr_product_info_t;
+
+/**
+ * PA-TNC Product Information type  (see section 4.2.2 of RFC 5792)
+ *
+ *                       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
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |               Product Vendor ID               |  Product ID   |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |  Product ID   |         Product Name (Variable Length)        |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+
+#define PRODUCT_INFO_MIN_SIZE	5
+
+/**
+ * Private data of an ietf_attr_product_info_t object.
+ */
+struct private_ietf_attr_product_info_t {
+
+	/**
+	 * Public members of ietf_attr_product_info_t
+	 */
+	ietf_attr_product_info_t public;
+
+	/**
+	 * Attribute vendor ID
+	 */
+	pen_t vendor_id;
+
+	/**
+	 * Attribute type
+	 */
+	u_int32_t type;
+
+	/**
+	 * Attribute value
+	 */
+	chunk_t value;
+
+	/**
+	 * Noskip flag
+	 */
+	bool noskip_flag;
+
+	/**
+	 * Product vendor ID
+	 */
+	pen_t product_vendor_id;
+
+	/**
+	 * Product ID
+	 */
+	u_int16_t product_id;
+
+	/**
+	 * Product Name
+	 */
+	char *product_name;
+
+};
+
+METHOD(pa_tnc_attr_t, get_vendor_id, pen_t,
+	private_ietf_attr_product_info_t *this)
+{
+	return this->vendor_id;
+}
+
+METHOD(pa_tnc_attr_t, get_type, u_int32_t,
+	private_ietf_attr_product_info_t *this)
+{
+	return this->type;
+}
+
+METHOD(pa_tnc_attr_t, get_value, chunk_t,
+	private_ietf_attr_product_info_t *this)
+{
+	return this->value;
+}
+
+METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
+	private_ietf_attr_product_info_t *this)
+{
+	return this->noskip_flag;
+}
+
+METHOD(pa_tnc_attr_t, set_noskip_flag,void,
+	private_ietf_attr_product_info_t *this, bool noskip)
+{
+	this->noskip_flag = noskip;
+}
+
+METHOD(pa_tnc_attr_t, build, void,
+	private_ietf_attr_product_info_t *this)
+{
+	bio_writer_t *writer;
+	chunk_t product_name;
+
+	product_name = chunk_create(this->product_name, strlen(this->product_name));
+
+	writer = bio_writer_create(PRODUCT_INFO_MIN_SIZE);
+	writer->write_uint24(writer, this->product_vendor_id);
+	writer->write_uint16(writer, this->product_id);
+	writer->write_data  (writer, product_name);
+
+	this->value = chunk_clone(writer->get_buf(writer));
+	writer->destroy(writer);
+}
+
+METHOD(pa_tnc_attr_t, process, status_t,
+	private_ietf_attr_product_info_t *this, u_int32_t *offset)
+{
+	bio_reader_t *reader;
+	chunk_t product_name;
+
+	if (this->value.len < PRODUCT_INFO_MIN_SIZE)
+	{
+		DBG1(DBG_TNC, "insufficient data for IETF product information");
+		*offset = 0;
+		return FAILED;
+	}
+	reader = bio_reader_create(this->value);
+	reader->read_uint24(reader, &this->product_vendor_id);
+	reader->read_uint16(reader, &this->product_id);
+	reader->read_data  (reader, reader->remaining(reader), &product_name);
+	reader->destroy(reader);
+
+	this->product_name = malloc(product_name.len + 1);
+	memcpy(this->product_name, product_name.ptr, product_name.len);
+	this->product_name[product_name.len] = '\0';
+
+	return SUCCESS;
+}
+
+METHOD(pa_tnc_attr_t, destroy, void,
+	private_ietf_attr_product_info_t *this)
+{
+	free(this->product_name);
+	free(this->value.ptr);
+	free(this);
+}
+
+METHOD(ietf_attr_product_info_t, get_info, char*,
+	private_ietf_attr_product_info_t *this, pen_t *vendor_id, u_int16_t *id)
+{
+	if (vendor_id)
+	{
+		*vendor_id = this->product_vendor_id;
+	}
+	if (id)
+	{
+		*id = this->product_id;
+	}
+	return this->product_name;
+}
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t *ietf_attr_product_info_create(pen_t vendor_id, u_int16_t id,
+											 char *name)
+{
+	private_ietf_attr_product_info_t *this;
+
+	INIT(this,
+		.public = {
+			.pa_tnc_attribute = {
+				.get_vendor_id = _get_vendor_id,
+				.get_type = _get_type,
+				.get_value = _get_value,
+				.get_noskip_flag = _get_noskip_flag,
+				.set_noskip_flag = _set_noskip_flag,
+				.build = _build,
+				.process = _process,
+				.destroy = _destroy,
+			},
+			.get_info = _get_info,
+		},
+		.vendor_id = PEN_IETF,
+		.type = IETF_ATTR_PRODUCT_INFORMATION,
+		.product_vendor_id = vendor_id,
+		.product_id = id,
+		.product_name = strdup(name),
+	);
+
+	return &this->public.pa_tnc_attribute;
+}
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t *ietf_attr_product_info_create_from_data(chunk_t data)
+{
+	private_ietf_attr_product_info_t *this;
+
+	INIT(this,
+		.public = {
+			.pa_tnc_attribute = {
+				.get_vendor_id = _get_vendor_id,
+				.get_type = _get_type,
+				.get_value = _get_value,
+				.build = _build,
+				.process = _process,
+				.destroy = _destroy,
+			},
+			.get_info = _get_info,
+		},
+		.vendor_id = PEN_IETF,
+		.type = IETF_ATTR_PRODUCT_INFORMATION,
+		.value = chunk_clone(data),
+	);
+
+	return &this->public.pa_tnc_attribute;
+}
+
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2011 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.
+ */
+
+/**
+ * @defgroup ietf_attr_product_infot ietf_attr_product_info
+ * @{ @ingroup ietf
+ */
+
+#ifndef IETF_ATTR_PRODUCT_INFO_H_
+#define IETF_ATTR_PRODUCT_INFO_H_
+
+typedef struct ietf_attr_product_info_t ietf_attr_product_info_t;
+
+#include "ietf_attr.h"
+#include "pa_tnc/pa_tnc_attr.h"
+
+
+/**
+ * Class implementing the IETF PA-TNC Product Information attribute.
+ *
+ */
+struct ietf_attr_product_info_t {
+
+	/**
+	 * Public PA-TNC attribute interface
+	 */
+	pa_tnc_attr_t pa_tnc_attribute;
+
+	/**
+	 * Gets all product info
+	 *
+	 * @param vendor_id		Product vendor ID
+	 * @param id			Product ID
+	 * @return				Product Name
+	 */
+	char* (*get_info)(ietf_attr_product_info_t *this,
+					  pen_t *vendor_id, u_int16_t *id);
+
+};
+
+/**
+ * Creates an ietf_attr_product_info_t object
+ *
+ */
+pa_tnc_attr_t* ietf_attr_product_info_create(pen_t vendor_id, u_int16_t id,
+											 char *name);
+
+/**
+ * Creates an ietf_attr_product_info_t object from received data
+ *
+ * @param value				unparsed attribute value
+ */
+pa_tnc_attr_t* ietf_attr_product_info_create_from_data(chunk_t value);
+
+#endif /** IETF_ATTR_PRODUCT_INFO_H_ @}*/