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+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * Copyright (C) 2012-2014 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 pts pts
+ * @{ @ingroup libimcv
+ */
+
+#ifndef PTS_H_
+#define PTS_H_
+
+typedef struct pts_t pts_t;
+
+#include "pts_error.h"
+#include "pts_proto_caps.h"
+#include "pts_meas_algo.h"
+#include "pts_file_meas.h"
+#include "pts_file_meta.h"
+#include "pts_dh_group.h"
+#include "pts_pcr.h"
+#include "pts_req_func_comp_evid.h"
+#include "pts_simple_evid_final.h"
+#include "components/pts_comp_func_name.h"
+
+#include <library.h>
+#include <collections/linked_list.h>
+
+/**
+ * UTF-8 encoding of the character used to delimiter the filename
+ */
+#define SOLIDUS_UTF 0x2F
+#define REVERSE_SOLIDUS_UTF 0x5C
+
+/**
+ * PCR indices used for measurements of various functional components
+ */
+#define PCR_BIOS 0
+#define PCR_PLATFORM_EXT 1
+#define PCR_MOTHERBOARD 1
+#define PCR_OPTION_ROMS 2
+#define PCR_IPL 4
+
+#define PCR_TBOOT_POLICY 17
+#define PCR_TBOOT_MLE 18
+
+#define PCR_TGRUB_MBR_STAGE1 4
+#define PCR_TGRUB_STAGE2_PART1 8
+#define PCR_TGRUB_STAGE2_PART2 9
+#define PCR_TGRUB_CMD_LINE_ARGS 12
+#define PCR_TGRUB_CHECKFILE 13
+#define PCR_TGRUB_LOADED_FILES 14
+
+#define PCR_DEBUG 16
+
+/**
+ * Length of the generated nonce used for calculation of shared secret
+ */
+#define ASSESSMENT_SECRET_LEN 20
+
+/**
+ * Length of the TPM_QUOTE_INFO structure, TPM Spec 1.2
+ */
+#define TPM_QUOTE_INFO_LEN 48
+
+/**
+ * Hashing algorithm used by tboot and trustedGRUB
+ */
+#define TRUSTED_HASH_ALGO PTS_MEAS_ALGO_SHA1
+
+/**
+ * Class implementing the TCG Platform Trust Service (PTS)
+ *
+ */
+struct pts_t {
+
+ /**
+ * Get PTS Protocol Capabilities
+ *
+ * @return Protocol capabilities flags
+ */
+ pts_proto_caps_flag_t (*get_proto_caps)(pts_t *this);
+
+ /**
+ * Set PTS Protocol Capabilities
+ *
+ * @param flags Protocol capabilities flags
+ */
+ void (*set_proto_caps)(pts_t *this, pts_proto_caps_flag_t flags);
+
+ /**
+ * Get PTS Measurement Algorithm
+ *
+ * @return PTS measurement algorithm
+ */
+ pts_meas_algorithms_t (*get_meas_algorithm)(pts_t *this);
+
+ /**
+ * Set PTS Measurement Algorithm
+ *
+ * @param algorithm PTS measurement algorithm
+ */
+ void (*set_meas_algorithm)(pts_t *this, pts_meas_algorithms_t algorithm);
+
+ /**
+ * Get DH Hash Algorithm
+ *
+ * @return DH hash algorithm
+ */
+ pts_meas_algorithms_t (*get_dh_hash_algorithm)(pts_t *this);
+
+ /**
+ * Set DH Hash Algorithm
+ *
+ * @param algorithm DH hash algorithm
+ */
+ void (*set_dh_hash_algorithm)(pts_t *this, pts_meas_algorithms_t algorithm);
+
+ /**
+ * Create PTS Diffie-Hellman object and nonce
+ *
+ * @param group PTS DH group
+ * @param nonce_len Nonce length
+ * @return TRUE if creation was successful
+ *
+ */
+ bool (*create_dh_nonce)(pts_t *this, pts_dh_group_t group, int nonce_len);
+
+ /**
+ * Get my Diffie-Hellman public value
+ *
+ * @param value My public DH value
+ * @param nonce My DH nonce
+ */
+ void (*get_my_public_value)(pts_t *this, chunk_t *value, chunk_t *nonce);
+
+ /**
+ * Set peer Diffie.Hellman public value
+ *
+ * @param value Peer public DH value
+ * @param nonce Peer DH nonce
+ */
+ void (*set_peer_public_value) (pts_t *this, chunk_t value, chunk_t nonce);
+
+ /**
+ * Calculates assessment secret to be used for TPM Quote as ExternalData
+ *
+ * @return TRUE unless both DH public values
+ * and nonces are set
+ */
+ bool (*calculate_secret) (pts_t *this);
+
+ /**
+ * Get primary key of platform entry in database
+ *
+ * @return Platform and OS info
+ */
+ int (*get_platform_id)(pts_t *this);
+
+ /**
+ * Set primary key of platform entry in database
+ *
+ * @param pid Primary key of platform entry in database
+ */
+ void (*set_platform_id)(pts_t *this, int pid);
+
+ /**
+ * Get TPM 1.2 Version Info
+ *
+ * @param info chunk containing a TPM_CAP_VERSION_INFO struct
+ * @return TRUE if TPM Version Info available
+ */
+ bool (*get_tpm_version_info)(pts_t *this, chunk_t *info);
+
+ /**
+ * Set TPM 1.2 Version Info
+ *
+ * @param info chunk containing a TPM_CAP_VERSION_INFO struct
+ */
+ void (*set_tpm_version_info)(pts_t *this, chunk_t info);
+
+ /**
+ * Get Attestation Identity Certificate or Public Key
+ *
+ * @return AIK Certificate or Public Key
+ */
+ certificate_t* (*get_aik)(pts_t *this);
+
+ /**
+ * Set Attestation Identity Certificate or Public Key
+ *
+ * @param aik AIK Certificate or Public Key
+ * @param aik_id Primary key referencing AIK in database
+ */
+ void (*set_aik)(pts_t *this, certificate_t *aik, int aik_id);
+
+ /**
+ * Get primary key referencing AIK in database
+ *
+ * @return Primary key referencing AIK in database
+ */
+ int (*get_aik_id)(pts_t *this);
+
+ /**
+ * Check whether path is valid file/directory on filesystem
+ *
+ * @param path Absolute path
+ * @param error_code Output variable for PTS error code
+ * @return TRUE if path is valid or file/directory
+ * doesn't exist or path is invalid
+ * FALSE if local error occurred within stat function
+ */
+ bool (*is_path_valid)(pts_t *this, char *path, pts_error_code_t *error_code);
+
+ /**
+ * Obtain file metadata
+ *
+ * @param pathname Absolute pathname of file/directory
+ * @param is_dir TRUE if directory contents are requested
+ * @return PTS File Metadata or NULL if FAILED
+ */
+ pts_file_meta_t* (*get_metadata)(pts_t *this, char *pathname, bool is_dir);
+
+ /**
+ * Reads given PCR value and returns it
+ * Expects owner secret to be WELL_KNOWN_SECRET
+ *
+ * @param pcr_num Number of PCR to read
+ * @param pcr_value Chunk to save pcr read output
+ * @return NULL in case of TSS error, PCR value otherwise
+ */
+ bool (*read_pcr)(pts_t *this, u_int32_t pcr_num, chunk_t *pcr_value);
+
+ /**
+ * Extends given PCR with given value
+ * Expects owner secret to be WELL_KNOWN_SECRET
+ *
+ * @param pcr_num Number of PCR to extend
+ * @param input Value to extend
+ * @param output Chunk to save PCR value after extension
+ * @return FALSE in case of TSS error, TRUE otherwise
+ */
+ bool (*extend_pcr)(pts_t *this, u_int32_t pcr_num, chunk_t input,
+ chunk_t *output);
+
+ /**
+ * Quote over PCR's
+ * Expects owner and SRK secret to be WELL_KNOWN_SECRET and no password set for AIK
+ *
+ * @param use_quote2 Version of the Quote function to be used
+ * @param pcr_comp Chunk to save PCR composite structure
+ * @param quote_sig Chunk to save quote operation output
+ * without external data (anti-replay protection)
+ * @return FALSE in case of TSS error, TRUE otherwise
+ */
+ bool (*quote_tpm)(pts_t *this, bool use_quote2, chunk_t *pcr_comp,
+ chunk_t *quote_sig);
+
+ /**
+ * Get the shadow PCR set
+ *
+ * @return shadow PCR set
+ */
+ pts_pcr_t* (*get_pcrs)(pts_t *this);
+
+ /**
+ * Constructs and returns TPM Quote Info structure expected from IMC
+ *
+ * @param use_quote2 Version of the TPM_QUOTE_INFO to be constructed
+ * @param use_ver_info Version info is concatenated to TPM_QUOTE_INFO2
+ * @param comp_hash_algo Composite Hash Algorithm
+ * @param pcr_comp Output variable to store PCR Composite
+ * @param quote_info Output variable to store TPM Quote Info
+ * @return FALSE in case of any error, TRUE otherwise
+ */
+ bool (*get_quote_info)(pts_t *this, bool use_quote2, bool ver_info_included,
+ pts_meas_algorithms_t comp_hash_algo,
+ chunk_t *pcr_comp, chunk_t *quote_info);
+
+ /**
+ * Constructs and returns PCR Quote Digest structure expected from IMC
+ *
+ * @param data Calculated TPM Quote Digest
+ * @param signature TPM Quote Signature received from IMC
+ * @return FALSE if signature is not verified
+ */
+ bool (*verify_quote_signature)(pts_t *this, chunk_t data, chunk_t signature);
+
+ /**
+ * Destroys a pts_t object.
+ */
+ void (*destroy)(pts_t *this);
+
+};
+
+/**
+ * Creates an pts_t object
+ *
+ * @param is_imc TRUE if running on an IMC
+ */
+pts_t* pts_create(bool is_imc);
+
+#endif /** PTS_H_ @}*/
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