Implemented TCG PTS File Measurement attribute
authorSansar Choinyambuu <schoinya@hsr.ch>
Fri, 12 Aug 2011 12:09:33 +0000 (14:09 +0200)
committerAndreas Steffen <andreas.steffen@strongswan.org>
Thu, 8 Sep 2011 10:08:10 +0000 (12:08 +0200)
src/libimcv/Makefile.am
src/libimcv/tcg/tcg_pts_attr_file_meas.c [new file with mode: 0644]
src/libimcv/tcg/tcg_pts_attr_file_meas.h [new file with mode: 0644]

index c04e4f2..503b1d6 100644 (file)
@@ -28,7 +28,8 @@ libimcv_la_SOURCES = \
        tcg/tcg_pts_attr_gen_attest_evid.h tcg/tcg_pts_attr_gen_attest_evid.c \
        tcg/tcg_pts_attr_simple_comp_evid.h tcg/tcg_pts_attr_simple_comp_evid.c \
        tcg/tcg_pts_attr_simple_evid_final.h tcg/tcg_pts_attr_simple_evid_final.c \
-       tcg/tcg_pts_attr_req_file_meas.h tcg/tcg_pts_attr_req_file_meas.c
+       tcg/tcg_pts_attr_req_file_meas.h tcg/tcg_pts_attr_req_file_meas.c \
+       tcg/tcg_pts_attr_file_meas.h tcg/tcg_pts_attr_file_meas.c
 
 # CFLAGS = -Wall -Werror
 
diff --git a/src/libimcv/tcg/tcg_pts_attr_file_meas.c b/src/libimcv/tcg/tcg_pts_attr_file_meas.c
new file mode 100644 (file)
index 0000000..c2f04a9
--- /dev/null
@@ -0,0 +1,371 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * 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 "tcg_pts_attr_file_meas.h"
+
+#include <pa_tnc/pa_tnc_msg.h>
+#include <bio/bio_writer.h>
+#include <bio/bio_reader.h>
+#include <utils/linked_list.h>
+/* For pow function */
+#include <math.h>
+#include <debug.h>
+
+typedef struct private_tcg_pts_attr_file_meas_t private_tcg_pts_attr_file_meas_t;
+typedef struct file_meas_entry_t file_meas_entry_t;
+
+/**
+ * File Measurement entry
+ */
+struct file_meas_entry_t {
+       chunk_t   measurement;
+       u_int16_t file_name_len;
+       chunk_t   file_name;
+};
+
+/**
+ * File Measurement (see section 3.19.2 of PTS Protocol: Binding to TNC IF-M Specification)
+ * 
+ *                       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
+ *
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |                  Number of Files included                    |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |                  Number of Files included                    |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |          Request ID          |   Measurement Length          |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |          Measurement #1 (Variable Length)                    |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |          Filename Length     |   Filename (Variable Length)  ~
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  ~                  Filename (Variable Length)                  ~
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |          Measurement #2 (Variable Length)                    |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |          Filename Length     |   Filename (Variable Length)  ~
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  ~                  Filename (Variable Length)                  ~
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *                     ...........................
+ */
+
+#define PTS_FILE_MEAS_SIZE             12
+
+/**
+ * Private data of an tcg_pts_attr_file_meas_t object.
+ */
+struct private_tcg_pts_attr_file_meas_t {
+
+       /**
+        * Public members of tcg_pts_attr_file_meas_t
+        */
+       tcg_pts_attr_file_meas_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;
+       
+       /**
+        * Number of files included
+        */
+       u_int64_t number_of_files;
+       
+       /**
+        * Request ID
+        */
+       u_int16_t request_id;
+       
+       /**
+        * Measurement Length
+        */
+       u_int16_t meas_len;
+               
+       /**
+        * List of File Measurement entries
+        */
+       linked_list_t *measurements;
+
+};
+
+METHOD(pa_tnc_attr_t, get_vendor_id, pen_t,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return this->vendor_id;
+}
+
+METHOD(pa_tnc_attr_t, get_type, u_int32_t,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return this->type;
+}
+
+METHOD(pa_tnc_attr_t, get_value, chunk_t,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return this->value;
+}
+
+METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return this->noskip_flag;
+}
+
+METHOD(pa_tnc_attr_t, set_noskip_flag,void,
+       private_tcg_pts_attr_file_meas_t *this, bool noskip)
+{
+       this->noskip_flag = noskip;
+}
+
+METHOD(pa_tnc_attr_t, build, void,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       bio_writer_t *writer;
+       enumerator_t *enumerator;
+       file_meas_entry_t *entry;
+       
+       writer = bio_writer_create(PTS_FILE_MEAS_SIZE);
+
+       /* Write the 64 bit integer as 2 parts, first 32 bit and second */
+       writer->write_uint32 (writer, (this->number_of_files >> 32));
+       writer->write_uint32 (writer, (this->number_of_files & (int)(pow(2,32) - 1)));
+       writer->write_uint16(writer, this->request_id);
+       writer->write_uint16(writer, this->meas_len);
+
+       enumerator = this->measurements->create_enumerator(this->measurements);
+       while (enumerator->enumerate(enumerator, &entry))
+       {
+               writer->write_data (writer, entry->measurement);
+               writer->write_uint16 (writer, entry->file_name_len);
+               writer->write_data(writer, entry->file_name);
+       }
+       enumerator->destroy(enumerator);
+
+       this->value = chunk_clone(writer->get_buf(writer));
+       writer->destroy(writer);
+}
+
+METHOD(pa_tnc_attr_t, process, status_t,
+       private_tcg_pts_attr_file_meas_t *this, u_int32_t *offset)
+{
+       bio_reader_t *reader;
+       u_int32_t number_of_files;
+       u_int64_t number_of_files_64;
+       file_meas_entry_t *entry;
+       
+       if (this->value.len < PTS_FILE_MEAS_SIZE)
+       {
+               DBG1(DBG_TNC, "insufficient data for File Measurement");
+               *offset = 0;
+               return FAILED;
+       }
+       reader = bio_reader_create(this->value);
+       
+       reader->read_uint32(reader, &number_of_files);
+       number_of_files_64 = number_of_files;
+       this->number_of_files = (number_of_files_64 << 32);
+       reader->read_uint32(reader, &number_of_files);
+       this->number_of_files += number_of_files;
+       
+       reader->read_uint16(reader, &this->request_id);
+       reader->read_uint16(reader, &this->meas_len);
+       
+       while (reader->remaining(reader))
+       {
+               entry = malloc_thing(file_meas_entry_t);        
+               reader->read_data (reader, this->meas_len, &entry->measurement);
+               reader->read_uint16 (reader, &entry->file_name_len);
+               reader->read_data(reader, entry->file_name_len, &entry->file_name);
+               this->measurements->insert_last(this->measurements, entry);
+       }
+
+       reader->destroy(reader);
+       return SUCCESS; 
+}
+
+METHOD(pa_tnc_attr_t, destroy, void,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       free(this->value.ptr);
+       this->measurements->destroy_function(this->measurements, free);
+       free(this);
+}
+
+METHOD(tcg_pts_attr_file_meas_t, get_number_of_files, u_int64_t,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return this->number_of_files;
+}
+
+METHOD(tcg_pts_attr_file_meas_t, set_number_of_files, void,
+       private_tcg_pts_attr_file_meas_t *this, u_int64_t number_of_files)
+{
+       this->number_of_files = number_of_files;
+}
+
+METHOD(tcg_pts_attr_file_meas_t, get_request_id, u_int16_t,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return this->request_id;
+}
+
+METHOD(tcg_pts_attr_file_meas_t, set_request_id, void,
+       private_tcg_pts_attr_file_meas_t *this, u_int16_t request_id)
+{
+       this->request_id = request_id;
+}
+
+METHOD(tcg_pts_attr_file_meas_t, get_meas_len, u_int16_t,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return this->meas_len;
+}
+
+METHOD(tcg_pts_attr_file_meas_t, set_meas_len, void,
+       private_tcg_pts_attr_file_meas_t *this, u_int16_t meas_len)
+{
+       this->meas_len = meas_len;
+}
+
+METHOD(tcg_pts_attr_file_meas_t, add_file_meas, void,
+       private_tcg_pts_attr_file_meas_t *this, chunk_t measurement,
+                                               chunk_t file_name)
+{
+       file_meas_entry_t *entry;
+
+       entry = malloc_thing(file_meas_entry_t);
+       entry->measurement = measurement;
+       entry->file_name_len = file_name.len;
+       entry->file_name = file_name;
+       this->measurements->insert_last(this->measurements, entry);     
+}
+
+/**
+ * Enumerate file measurement entries
+ */
+static bool port_filter(void *null, file_meas_entry_t **entry, chunk_t *measurement, 
+                                               void *i2, u_int16_t *file_name_len,
+                                               void *i3, chunk_t *file_name)
+{
+       *measurement = (*entry)->measurement;
+       *file_name_len = (*entry)->file_name_len;
+       *file_name = (*entry)->file_name;
+       return TRUE;
+}
+
+METHOD(tcg_pts_attr_file_meas_t, create_file_meas_enumerator, enumerator_t*,
+       private_tcg_pts_attr_file_meas_t *this)
+{
+       return enumerator_create_filter(this->measurements->create_enumerator(this->measurements),
+                                       (void*)port_filter, NULL, NULL);
+}
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t *tcg_pts_attr_file_meas_create(
+                                      u_int64_t number_of_files,
+                                      u_int16_t request_id,
+                                      u_int16_t meas_len)
+{
+       private_tcg_pts_attr_file_meas_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_number_of_files= _get_number_of_files,
+                       .set_number_of_files= _set_number_of_files,
+                       .get_request_id = _get_request_id,
+                       .set_request_id = _set_request_id,
+                       .get_meas_len = _get_meas_len,
+                       .set_meas_len = _set_meas_len,
+                       .add_file_meas = _add_file_meas,
+                       .create_file_meas_enumerator = _create_file_meas_enumerator,
+               },
+               .vendor_id = PEN_TCG,
+               .type = TCG_PTS_FILE_MEAS,
+               .number_of_files = number_of_files,
+               .request_id = request_id,
+               .meas_len = meas_len,
+               .measurements = linked_list_create(),
+       );
+
+       return &this->public.pa_tnc_attribute;
+}
+
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t *tcg_pts_attr_file_meas_create_from_data(chunk_t data)
+{
+       private_tcg_pts_attr_file_meas_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_number_of_files= _get_number_of_files,
+                       .set_number_of_files= _set_number_of_files,
+                       .get_request_id = _get_request_id,
+                       .set_request_id = _set_request_id,
+                       .get_meas_len = _get_meas_len,
+                       .set_meas_len = _set_meas_len,
+                       .add_file_meas = _add_file_meas,
+                       .create_file_meas_enumerator = _create_file_meas_enumerator,
+               },
+               .vendor_id = PEN_TCG,
+               .type = TCG_PTS_FILE_MEAS,
+               .value = chunk_clone(data),
+               .measurements = linked_list_create(),
+       );
+
+       return &this->public.pa_tnc_attribute;
+}
diff --git a/src/libimcv/tcg/tcg_pts_attr_file_meas.h b/src/libimcv/tcg/tcg_pts_attr_file_meas.h
new file mode 100644 (file)
index 0000000..8b610c0
--- /dev/null
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * 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 tcg_pts_attr_file_meas tcg_pts_attr_file_meas
+ * @{ @ingroup tcg_pts_attr_file_meas
+ */
+
+#ifndef TCG_PTS_ATTR_FILE_MEAS_H_
+#define TCG_PTS_ATTR_FILE_MEAS_H_
+
+typedef struct tcg_pts_attr_file_meas_t tcg_pts_attr_file_meas_t;
+
+#include "tcg_attr.h"
+#include "pa_tnc/pa_tnc_attr.h"
+
+/**
+ * Class implementing the TCG PTS File Measurement attribute
+ *
+ */
+struct tcg_pts_attr_file_meas_t {
+
+       /**
+        * Public PA-TNC attribute interface
+        */
+       pa_tnc_attr_t pa_tnc_attribute;
+               
+       /**
+        * Get Number of Files included
+        *
+        * @return                              Number of Files included
+        */
+       u_int64_t (*get_number_of_files)(tcg_pts_attr_file_meas_t *this);
+       
+       /**
+        * Set Number of Files included
+        *
+        * @param num_files                     Number of Files included
+        */
+       void (*set_number_of_files)(tcg_pts_attr_file_meas_t *this,
+                                               u_int64_t num_files);
+       
+       /**
+        * Get Request ID
+        *
+        * @return                              Request ID
+        */
+       u_int16_t (*get_request_id)(tcg_pts_attr_file_meas_t *this);
+       
+       /**
+        * Set Request ID
+        *
+        * @param request_id                    Request ID
+        */
+       void (*set_request_id)(tcg_pts_attr_file_meas_t *this,
+                                               u_int16_t request_id);
+               
+       /**
+        * Get Measurement Length
+        *
+        * @return                              Measurement Length
+        */
+       u_int16_t (*get_meas_len)(tcg_pts_attr_file_meas_t *this);
+       
+       /**
+        * Set Measurement Length 
+        *
+        * @param meas_len                      Measurement Length
+        */
+       void (*set_meas_len)(tcg_pts_attr_file_meas_t *this,
+                                               u_int16_t meas_len);
+       
+        /**
+        * Add a file measurement entry
+        *
+        * @param measurement           Measurement value
+        * @param file_name             File Name
+        */
+       void (*add_file_meas)(tcg_pts_attr_file_meas_t *this, chunk_t measurement,
+                                               chunk_t file_name);
+
+       /**
+        * Enumerates over all file measurements
+        * Format:  chunk_t *measurement, chunk_t *file_name
+        *
+        * @return                              enumerator
+        */
+       enumerator_t* (*create_file_meas_enumerator)(tcg_pts_attr_file_meas_t *this);
+};
+
+/**
+ * Creates an tcg_pts_attr_file_meas_t object
+ * 
+ * @param directory_flag               Directory Contents Flag
+ * @param request_id                   Request ID
+ * @param delimiter                    Delimiter Character
+ * @param path                         File Path
+ */
+pa_tnc_attr_t* tcg_pts_attr_file_meas_create(u_int64_t number_of_files,
+                                      u_int16_t request_id,
+                                      u_int16_t meas_len);
+
+/**
+ * Creates an tcg_pts_attr_file_meas_t object from received data
+ *
+ * @param value                                unparsed attribute value
+ */
+pa_tnc_attr_t* tcg_pts_attr_file_meas_create_from_data(chunk_t value);
+
+#endif /** TCG_PTS_ATTR_FILE_MEAS_H_ @}*/