Import upstream release 5.2.1

1 files changed, 424 insertions, 0 deletions

diff --git a/src/libimcv/plugins/imc_swid/imc_swid.c b/src/libimcv/plugins/imc_swid/imc_swid.c
new file mode 100644
index 000000000..40f352ad9
--- /dev/null
+++ b/src/libimcv/plugins/imc_swid/imc_swid.c
@@ -0,0 +1,424 @@
+/*
+ * Copyright (C) 2013-2014 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.
+ */
+
+#include "imc_swid_state.h"
+
+#include <imc/imc_agent.h>
+#include <imc/imc_msg.h>
+#include "tcg/seg/tcg_seg_attr_max_size.h"
+#include "tcg/seg/tcg_seg_attr_seg_env.h"
+#include "tcg/swid/tcg_swid_attr_req.h"
+#include "tcg/swid/tcg_swid_attr_tag_inv.h"
+#include "tcg/swid/tcg_swid_attr_tag_id_inv.h"
+#include "swid/swid_inventory.h"
+#include "swid/swid_error.h"
+
+#include <tncif_pa_subtypes.h>
+
+#include <pen/pen.h>
+#include <utils/debug.h>
+
+#define SWID_GENERATOR	"/usr/local/bin/swid_generator"
+
+/* IMC definitions */
+
+static const char imc_name[] = "SWID";
+
+static pen_type_t msg_types[] = {
+	{ PEN_TCG, PA_SUBTYPE_TCG_SWID }
+};
+
+static imc_agent_t *imc_swid;
+
+/**
+ * see section 3.8.1 of TCG TNC IF-IMC Specification 1.3
+ */
+TNC_Result TNC_IMC_Initialize(TNC_IMCID imc_id,
+							  TNC_Version min_version,
+							  TNC_Version max_version,
+							  TNC_Version *actual_version)
+{
+	if (imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has already been initialized", imc_name);
+		return TNC_RESULT_ALREADY_INITIALIZED;
+	}
+	imc_swid = imc_agent_create(imc_name, msg_types, countof(msg_types),
+							  imc_id, actual_version);
+	if (!imc_swid)
+	{
+		return TNC_RESULT_FATAL;
+	}
+	if (min_version > TNC_IFIMC_VERSION_1 || max_version < TNC_IFIMC_VERSION_1)
+	{
+		DBG1(DBG_IMC, "no common IF-IMC version");
+		return TNC_RESULT_NO_COMMON_VERSION;
+	}
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 3.8.2 of TCG TNC IF-IMC Specification 1.3
+ */
+TNC_Result TNC_IMC_NotifyConnectionChange(TNC_IMCID imc_id,
+										  TNC_ConnectionID connection_id,
+										  TNC_ConnectionState new_state)
+{
+	imc_state_t *state;
+
+	if (!imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	switch (new_state)
+	{
+		case TNC_CONNECTION_STATE_CREATE:
+			state = imc_swid_state_create(connection_id);
+			return imc_swid->create_state(imc_swid, state);
+		case TNC_CONNECTION_STATE_HANDSHAKE:
+			if (imc_swid->change_state(imc_swid, connection_id, new_state,
+				&state) != TNC_RESULT_SUCCESS)
+			{
+				return TNC_RESULT_FATAL;
+			}
+			state->set_result(state, imc_id,
+							  TNC_IMV_EVALUATION_RESULT_DONT_KNOW);
+			return TNC_RESULT_SUCCESS;
+		case TNC_CONNECTION_STATE_DELETE:
+			return imc_swid->delete_state(imc_swid, connection_id);
+		default:
+			return imc_swid->change_state(imc_swid, connection_id,
+										  new_state, NULL);
+	}
+}
+
+/**
+ * see section 3.8.3 of TCG TNC IF-IMC Specification 1.3
+ */
+TNC_Result TNC_IMC_BeginHandshake(TNC_IMCID imc_id,
+								  TNC_ConnectionID connection_id)
+{
+	imc_state_t *state;
+	imc_msg_t *out_msg;
+	pa_tnc_attr_t *attr;
+	seg_contract_t *contract;
+	seg_contract_manager_t *contracts;
+	size_t max_attr_size = SWID_MAX_ATTR_SIZE;
+	size_t max_seg_size;
+	char buf[BUF_LEN];
+	TNC_Result result = TNC_RESULT_SUCCESS;
+
+	if (!imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	if (!imc_swid->get_state(imc_swid, connection_id, &state))
+	{
+		return TNC_RESULT_FATAL;
+	}
+
+	/* Determine maximum PA-TNC attribute segment size */
+	max_seg_size = state->get_max_msg_len(state) - PA_TNC_HEADER_SIZE
+												 - PA_TNC_ATTR_HEADER_SIZE
+												 - TCG_SEG_ATTR_SEG_ENV_HEADER
+												 - PA_TNC_ATTR_HEADER_SIZE
+												 - TCG_SEG_ATTR_MAX_SIZE_SIZE;
+
+	/* Announce support of PA-TNC segmentation to IMV */
+	contract = seg_contract_create(msg_types[0], max_attr_size, max_seg_size,
+									 TRUE, imc_id, TRUE);
+	contract->get_info_string(contract, buf, BUF_LEN, TRUE);
+	DBG2(DBG_IMC, "%s", buf);
+	contracts = state->get_contracts(state);
+	contracts->add_contract(contracts, contract);
+	attr = tcg_seg_attr_max_size_create(max_attr_size, max_seg_size, TRUE);
+
+	/* send PA-TNC message with the excl flag not set */
+	out_msg = imc_msg_create(imc_swid, state, connection_id, imc_id,
+							 TNC_IMVID_ANY, msg_types[0]);
+	out_msg->add_attribute(out_msg, attr);
+	result = out_msg->send(out_msg, FALSE);
+	out_msg->destroy(out_msg);
+
+	return result;
+}
+
+/**
+ * Add one or multiple SWID Inventory attributes to the send queue
+ */
+static bool add_swid_inventory(imc_state_t *state, imc_msg_t *msg,
+							   uint32_t request_id, bool full_tags,
+							   swid_inventory_t *targets)
+{
+	pa_tnc_attr_t *attr, *attr_error;
+	imc_swid_state_t *swid_state;
+	swid_inventory_t *swid_inventory;
+	char *swid_directory, *swid_generator;
+	uint32_t eid_epoch;
+	bool swid_pretty, swid_full;
+	enumerator_t *enumerator;
+
+	swid_directory = lib->settings->get_str(lib->settings,
+								"%s.plugins.imc-swid.swid_directory",
+								 SWID_DIRECTORY, lib->ns);
+	swid_generator = lib->settings->get_str(lib->settings,
+								"%s.plugins.imc-swid.swid_generator",
+								 SWID_GENERATOR, lib->ns);
+	swid_pretty = lib->settings->get_bool(lib->settings,
+								"%s.plugins.imc-swid.swid_pretty",
+								 FALSE, lib->ns);
+	swid_full = lib->settings->get_bool(lib->settings,
+								"%s.plugins.imc-swid.swid_full",
+								 FALSE, lib->ns);
+
+	swid_inventory = swid_inventory_create(full_tags);
+	if (!swid_inventory->collect(swid_inventory, swid_directory, swid_generator,
+								 targets, swid_pretty, swid_full))
+	{
+		swid_inventory->destroy(swid_inventory);
+		attr_error = swid_error_create(TCG_SWID_ERROR, request_id,
+								 0, "error in SWID tag collection");
+		msg->add_attribute(msg, attr_error);
+		return FALSE;
+	}
+	DBG1(DBG_IMC, "collected %d SWID tag%s%s",
+		 swid_inventory->get_count(swid_inventory), full_tags ? "" : " ID",
+		 swid_inventory->get_count(swid_inventory) == 1 ? "" : "s");
+
+	swid_state = (imc_swid_state_t*)state;
+	eid_epoch = swid_state->get_eid_epoch(swid_state);
+
+	if (full_tags)
+	{
+		tcg_swid_attr_tag_inv_t *swid_attr;
+		swid_tag_t *tag;
+
+		/* Send a TCG SWID Tag Inventory attribute */
+		attr = tcg_swid_attr_tag_inv_create(request_id, eid_epoch, 1);
+		swid_attr = (tcg_swid_attr_tag_inv_t*)attr;
+
+		enumerator = swid_inventory->create_enumerator(swid_inventory);
+		while (enumerator->enumerate(enumerator, &tag))
+		{
+			swid_attr->add(swid_attr, tag->get_ref(tag));
+		}
+		enumerator->destroy(enumerator);
+	}
+	else
+	{
+		tcg_swid_attr_tag_id_inv_t *swid_id_attr;
+		swid_tag_id_t *tag_id;
+
+		/* Send a TCG SWID Tag ID Inventory attribute */
+		attr = tcg_swid_attr_tag_id_inv_create(request_id, eid_epoch, 1);
+		swid_id_attr = (tcg_swid_attr_tag_id_inv_t*)attr;
+
+		enumerator = swid_inventory->create_enumerator(swid_inventory);
+		while (enumerator->enumerate(enumerator, &tag_id))
+		{
+			swid_id_attr->add(swid_id_attr, tag_id->get_ref(tag_id));
+		}
+		enumerator->destroy(enumerator);
+	}
+
+	msg->add_attribute(msg, attr);
+	swid_inventory->destroy(swid_inventory);
+
+	return TRUE;
+}
+
+static TNC_Result receive_message(imc_state_t *state, imc_msg_t *in_msg)
+{
+	imc_msg_t *out_msg;
+	pa_tnc_attr_t *attr;
+	enumerator_t *enumerator;
+	pen_type_t type;
+	TNC_Result result;
+	bool fatal_error = FALSE;
+
+	/* generate an outgoing PA-TNC message - we might need it */
+	out_msg = imc_msg_create_as_reply(in_msg);
+
+	/* parse received PA-TNC message and handle local and remote errors */
+	result = in_msg->receive(in_msg, out_msg, &fatal_error);
+	if (result != TNC_RESULT_SUCCESS)
+	{
+		out_msg->destroy(out_msg);
+		return result;
+	}
+
+	/* analyze PA-TNC attributes */
+	enumerator = in_msg->create_attribute_enumerator(in_msg);
+	while (enumerator->enumerate(enumerator, &attr))
+	{
+		tcg_swid_attr_req_t *attr_req;
+		uint8_t flags;
+		uint32_t request_id;
+		bool full_tags;
+		swid_inventory_t *targets;
+
+		type = attr->get_type(attr);
+
+		if (type.vendor_id != PEN_TCG || type.type != TCG_SWID_REQUEST)
+		{
+			continue;
+		}
+
+		attr_req = (tcg_swid_attr_req_t*)attr;
+		flags = attr_req->get_flags(attr_req);
+		request_id = attr_req->get_request_id(attr_req);
+		targets = attr_req->get_targets(attr_req);
+
+		if (flags & (TCG_SWID_ATTR_REQ_FLAG_S | TCG_SWID_ATTR_REQ_FLAG_C))
+		{
+			attr = swid_error_create(TCG_SWID_SUBSCRIPTION_DENIED, request_id,
+									 0, "no subscription available yet");
+			out_msg->add_attribute(out_msg, attr);
+			break;
+		}
+		full_tags = (flags & TCG_SWID_ATTR_REQ_FLAG_R) == 0;
+
+		if (!add_swid_inventory(state, out_msg, request_id, full_tags, targets))
+		{
+			break;
+		}
+	}
+	enumerator->destroy(enumerator);
+
+	if (fatal_error)
+	{
+		result = TNC_RESULT_FATAL;
+	}
+	else
+	{
+		/* send PA-TNC message with the EXCL flag set */
+		result = out_msg->send(out_msg, TRUE);
+	}
+	out_msg->destroy(out_msg);
+
+	return result;
+}
+
+/**
+ * see section 3.8.4 of TCG TNC IF-IMC Specification 1.3
+
+ */
+TNC_Result TNC_IMC_ReceiveMessage(TNC_IMCID imc_id,
+								  TNC_ConnectionID connection_id,
+								  TNC_BufferReference msg,
+								  TNC_UInt32 msg_len,
+								  TNC_MessageType msg_type)
+{
+	imc_state_t *state;
+	imc_msg_t *in_msg;
+	TNC_Result result;
+
+	if (!imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	if (!imc_swid->get_state(imc_swid, connection_id, &state))
+	{
+		return TNC_RESULT_FATAL;
+	}
+	in_msg = imc_msg_create_from_data(imc_swid, state, connection_id, msg_type,
+									  chunk_create(msg, msg_len));
+	result = receive_message(state, in_msg);
+	in_msg->destroy(in_msg);
+
+	return result;
+}
+
+/**
+ * see section 3.8.6 of TCG TNC IF-IMV Specification 1.3
+ */
+TNC_Result TNC_IMC_ReceiveMessageLong(TNC_IMCID imc_id,
+									  TNC_ConnectionID connection_id,
+									  TNC_UInt32 msg_flags,
+									  TNC_BufferReference msg,
+									  TNC_UInt32 msg_len,
+									  TNC_VendorID msg_vid,
+									  TNC_MessageSubtype msg_subtype,
+									  TNC_UInt32 src_imv_id,
+									  TNC_UInt32 dst_imc_id)
+{
+	imc_state_t *state;
+	imc_msg_t *in_msg;
+	TNC_Result result;
+
+	if (!imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	if (!imc_swid->get_state(imc_swid, connection_id, &state))
+	{
+		return TNC_RESULT_FATAL;
+	}
+	in_msg = imc_msg_create_from_long_data(imc_swid, state, connection_id,
+								src_imv_id, dst_imc_id,msg_vid, msg_subtype,
+								chunk_create(msg, msg_len));
+	result =receive_message(state, in_msg);
+	in_msg->destroy(in_msg);
+
+	return result;
+}
+
+/**
+ * see section 3.8.7 of TCG TNC IF-IMC Specification 1.3
+ */
+TNC_Result TNC_IMC_BatchEnding(TNC_IMCID imc_id,
+							   TNC_ConnectionID connection_id)
+{
+	if (!imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 3.8.8 of TCG TNC IF-IMC Specification 1.3
+ */
+TNC_Result TNC_IMC_Terminate(TNC_IMCID imc_id)
+{
+	if (!imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	imc_swid->destroy(imc_swid);
+	imc_swid = NULL;
+
+	return TNC_RESULT_SUCCESS;
+}
+
+/**
+ * see section 4.2.8.1 of TCG TNC IF-IMC Specification 1.3
+ */
+TNC_Result TNC_IMC_ProvideBindFunction(TNC_IMCID imc_id,
+									   TNC_TNCC_BindFunctionPointer bind_function)
+{
+	if (!imc_swid)
+	{
+		DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
+		return TNC_RESULT_NOT_INITIALIZED;
+	}
+	return imc_swid->bind_functions(imc_swid, bind_function);
+}