1 files changed, 119 insertions, 0 deletions
diff --git a/src/libimcv/seg/seg_env.h b/src/libimcv/seg/seg_env.h
new file mode 100644
index 000000000..08d33d752
--- /dev/null
+++ b/src/libimcv/seg/seg_env.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2014 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 seg_env seg_env
+ * @{ @ingroup libimcv_seg
+ */
+
+#ifndef SEG_ENV_H_
+#define SEG_ENV_H_
+
+typedef struct seg_env_t seg_env_t;
+typedef enum seg_env_flags_t seg_env_flags_t;
+
+#include <library.h>
+
+#include <pa_tnc/pa_tnc_attr.h>
+
+/**
+ * Segment Envelope flags
+ */
+enum seg_env_flags_t {
+	SEG_ENV_FLAG_NONE =	  0,
+	SEG_ENV_FLAG_MORE =	 (1<<7),
+	SEG_ENV_FLAG_START = (1<<6)
+};
+
+/**
+ * Interface for a PA-TNC attribute segment envelope object
+ */
+struct seg_env_t {
+
+	/**
+	 * Get Base Attribute ID
+	 *
+	 * @return				Base Attribute ID
+	 */
+	uint32_t (*get_base_attr_id)(seg_env_t *this);
+
+	/**
+	 * Get Base Attribute if it contains processed [incremental] data
+	 *
+	 * @return				Base Attribute (must be destroyed) or NULL
+	 */
+	pa_tnc_attr_t* (*get_base_attr)(seg_env_t *this);
+
+	/**
+	 * Base Attribute Info to be used by PA-TNC error messages
+	 *
+	 * @return				Message info string
+	 */
+	chunk_t (*get_base_attr_info)(seg_env_t *this);
+
+	/**
+	 * Generate the first segment envelope of the base attribute
+	 *
+	 * @return				First attribute segment envelope
+	 */
+	pa_tnc_attr_t* (*first_segment)(seg_env_t *this);
+
+	/**
+	 * Generate the next segment envelope of the base attribute
+	 *
+	 * @param last			TRUE if last segment
+	 * @return				Next attribute segment envelope
+	 */
+	pa_tnc_attr_t* (*next_segment)(seg_env_t *this, bool *last);
+
+	/**
+	 * Generate the first segment envelope of the base attribute
+	 *
+	 * @param segment		Attribute segment to be added
+	 * @param error			Error attribute if a parsing error occurred
+	 * return				TRUE if segment was successfully added
+	 */
+	bool (*add_segment)(seg_env_t *this, chunk_t segment,
+						pa_tnc_attr_t** error);
+
+	/**
+	 * Destroys a seg_env_t object.
+	 */
+	void (*destroy)(seg_env_t *this);
+};
+
+/**
+ * Create a PA-TNC attribute segment envelope object
+ *
+ * @param base_attr_id		Base Attribute ID
+ * @param base_attr			Base Attribute to be segmented
+ * @param max_seg_size		Maximum segment size
+ */
+seg_env_t* seg_env_create(uint32_t base_attr_id, pa_tnc_attr_t *base_attr,
+						  uint32_t max_seg_size);
+
+/**
+ * Create a PA-TNC attribute segment envelope object
+ *
+ * @param base_attr_id		Base Attribute ID
+ * @param data				First attribute segment
+ * @param max_seg_size		Maximum segment size
+ * @param error				Error attribute if a parsing error occurred
+ */
+seg_env_t* seg_env_create_from_data(uint32_t base_attr_id, chunk_t data,
+									uint32_t max_seg_size,
+									pa_tnc_attr_t** error);
+
+#endif /** SEG_ENV_H_ @}*/