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Moved all functionality into imv_os_agent_t class turning imv_os_t into an IF-IMV skeleton

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This commit is contained in:
Andreas Steffen
2013-06-21 23:25:23 +02:00
parent 99c6a5f8a4
commit 7513a09ee5
7 changed files with 946 additions and 780 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libimcv/plugins/imv_os/Makefile.am
+1 -1
View File
@@ -11,7 +11,7 @@ imv_os_la_LIBADD = $(top_builddir)/src/libimcv/libimcv.la \
imv_os_la_SOURCES = \ imv_os_la_SOURCES = \
imv_os.c imv_os_state.h imv_os_state.c \ imv_os.c imv_os_state.h imv_os_state.c \
imv_os_batch_ending.h imv_os_batch_ending.c \ imv_os_agent.h imv_os_agent.c \
imv_os_database.c imv_os_database.h imv_os_database.c imv_os_database.h
imv_os_la_LDFLAGS = -module -avoid-version imv_os_la_LDFLAGS = -module -avoid-version
src/libimcv/plugins/imv_os/imv_os.c
+25 -411
View File
@@ -12,53 +12,16 @@
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details. * for more details.
*/ */
#define _GNU_SOURCE
#include <stdio.h>
#include "imv_os_state.h" #include "imv_os_agent.h"
#include "imv_os_database.h"
#include "imv_os_batch_ending.h"
#include <imcv.h>
#include <imv/imv_agent.h>
#include <imv/imv_msg.h>
#include <ietf/ietf_attr.h>
#include <ietf/ietf_attr_default_pwd_enabled.h>
#include <ietf/ietf_attr_fwd_enabled.h>
#include <ietf/ietf_attr_installed_packages.h>
#include <ietf/ietf_attr_numeric_version.h>
#include <ietf/ietf_attr_op_status.h>
#include <ietf/ietf_attr_pa_tnc_error.h>
#include <ietf/ietf_attr_product_info.h>
#include <ietf/ietf_attr_remediation_instr.h>
#include <ietf/ietf_attr_string_version.h>
#include <ita/ita_attr.h>
#include <ita/ita_attr_settings.h>
#include <ita/ita_attr_angel.h>
#include <ita/ita_attr_device_id.h>
#include <tncif_names.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <collections/linked_list.h>
#include <utils/debug.h> #include <utils/debug.h>
#include <utils/lexparser.h>
/* IMV definitions */ /* IMV definitions */
static const char imv_name[] = "OS"; static const char imv_name[] = "OS";
static pen_type_t msg_types[] = { static imv_os_agent_t *imv_agent;
{ PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM }
};
static imv_agent_t *imv_os;
/**
* IMV OS database
*/
static imv_os_database_t *os_db;
/* /*
* see section 3.8.1 of TCG TNC IF-IMV Specification 1.3 * see section 3.8.1 of TCG TNC IF-IMV Specification 1.3
@@ -68,14 +31,15 @@ TNC_Result TNC_IMV_Initialize(TNC_IMVID imv_id,
TNC_Version max_version, TNC_Version max_version,
TNC_Version *actual_version) TNC_Version *actual_version)
{ {
if (imv_os) if (imv_agent)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has already been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has already been initialized", imv_name);
return TNC_RESULT_ALREADY_INITIALIZED; return TNC_RESULT_ALREADY_INITIALIZED;
} }
imv_os = imv_agent_create(imv_name, msg_types, countof(msg_types),
imv_id, actual_version); imv_agent =imv_os_agent_create(imv_name, imv_id, actual_version);
if (!imv_os)
if (!imv_agent)
{ {
return TNC_RESULT_FATAL; return TNC_RESULT_FATAL;
} }
@@ -84,10 +48,6 @@ TNC_Result TNC_IMV_Initialize(TNC_IMVID imv_id,
DBG1(DBG_IMV, "no common IF-IMV version"); DBG1(DBG_IMV, "no common IF-IMV version");
return TNC_RESULT_NO_COMMON_VERSION; return TNC_RESULT_NO_COMMON_VERSION;
} }
/* attach OS database co-located with IMV database */
os_db = imv_os_database_create(imcv_db);
return TNC_RESULT_SUCCESS; return TNC_RESULT_SUCCESS;
} }
@@ -98,323 +58,15 @@ TNC_Result TNC_IMV_NotifyConnectionChange(TNC_IMVID imv_id,
TNC_ConnectionID connection_id, TNC_ConnectionID connection_id,
TNC_ConnectionState new_state) TNC_ConnectionState new_state)
{ {
TNC_IMV_Action_Recommendation rec; if (!imv_agent)
imv_state_t *state;
imv_session_t *session;
if (!imv_os)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED; return TNC_RESULT_NOT_INITIALIZED;
} }
switch (new_state) return imv_agent->notify_connection_change(imv_agent, connection_id,
{ new_state);
case TNC_CONNECTION_STATE_CREATE:
state = imv_os_state_create(connection_id);
return imv_os->create_state(imv_os, state);
case TNC_CONNECTION_STATE_DELETE:
return imv_os->delete_state(imv_os, connection_id);
case TNC_CONNECTION_STATE_ACCESS_ALLOWED:
case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
case TNC_CONNECTION_STATE_ACCESS_NONE:
if (imcv_db && imv_os->get_state(imv_os, connection_id, &state))
{
switch (new_state)
{
case TNC_CONNECTION_STATE_ACCESS_ALLOWED:
rec = TNC_IMV_ACTION_RECOMMENDATION_ALLOW;
break;
case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
rec = TNC_IMV_ACTION_RECOMMENDATION_ISOLATE;
break;
case TNC_CONNECTION_STATE_ACCESS_NONE:
default:
rec = TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS;
}
session = state->get_session(state);
imcv_db->add_recommendation(imcv_db, session, rec);
imcv_db->policy_script(imcv_db, session, FALSE);
}
/* fall through to default state */
default:
return imv_os->change_state(imv_os, connection_id, new_state, NULL);
}
} }
static TNC_Result receive_message(imv_state_t *state, imv_msg_t *in_msg)
{
imv_msg_t *out_msg;
imv_os_state_t *os_state;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t type;
TNC_Result result;
chunk_t os_name = chunk_empty;
chunk_t os_version = chunk_empty;
bool fatal_error = FALSE, assessment = FALSE;
os_state = (imv_os_state_t*)state;
/* parse received PA-TNC message and handle local and remote errors */
result = in_msg->receive(in_msg, &fatal_error);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
out_msg = imv_msg_create_as_reply(in_msg);
/* analyze PA-TNC attributes */
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
type = attr->get_type(attr);
if (type.vendor_id == PEN_IETF)
{
switch (type.type)
{
case IETF_ATTR_PRODUCT_INFORMATION:
{
ietf_attr_product_info_t *attr_cast;
pen_t vendor_id;
os_state->set_received(os_state,
IMV_OS_ATTR_PRODUCT_INFORMATION);
attr_cast = (ietf_attr_product_info_t*)attr;
os_name = attr_cast->get_info(attr_cast, &vendor_id, NULL);
if (vendor_id != PEN_IETF)
{
DBG1(DBG_IMV, "operating system name is '%.*s' "
"from vendor %N", os_name.len, os_name.ptr,
pen_names, vendor_id);
}
else
{
DBG1(DBG_IMV, "operating system name is '%.*s'",
os_name.len, os_name.ptr);
}
break;
}
case IETF_ATTR_STRING_VERSION:
{
ietf_attr_string_version_t *attr_cast;
os_state->set_received(os_state,
IMV_OS_ATTR_STRING_VERSION);
attr_cast = (ietf_attr_string_version_t*)attr;
os_version = attr_cast->get_version(attr_cast, NULL, NULL);
if (os_version.len)
{
DBG1(DBG_IMV, "operating system version is '%.*s'",
os_version.len, os_version.ptr);
}
break;
}
case IETF_ATTR_NUMERIC_VERSION:
{
ietf_attr_numeric_version_t *attr_cast;
u_int32_t major, minor;
os_state->set_received(os_state,
IMV_OS_ATTR_NUMERIC_VERSION);
attr_cast = (ietf_attr_numeric_version_t*)attr;
attr_cast->get_version(attr_cast, &major, &minor);
DBG1(DBG_IMV, "operating system numeric version is %d.%d",
major, minor);
break;
}
case IETF_ATTR_OPERATIONAL_STATUS:
{
ietf_attr_op_status_t *attr_cast;
op_status_t op_status;
op_result_t op_result;
time_t last_boot;
os_state->set_received(os_state,
IMV_OS_ATTR_OPERATIONAL_STATUS);
attr_cast = (ietf_attr_op_status_t*)attr;
op_status = attr_cast->get_status(attr_cast);
op_result = attr_cast->get_result(attr_cast);
last_boot = attr_cast->get_last_use(attr_cast);
DBG1(DBG_IMV, "operational status: %N, result: %N",
op_status_names, op_status, op_result_names, op_result);
DBG1(DBG_IMV, "last boot: %T", &last_boot, TRUE);
break;
}
case IETF_ATTR_FORWARDING_ENABLED:
{
ietf_attr_fwd_enabled_t *attr_cast;
os_fwd_status_t fwd_status;
os_state->set_received(os_state,
IMV_OS_ATTR_FORWARDING_ENABLED);
attr_cast = (ietf_attr_fwd_enabled_t*)attr;
fwd_status = attr_cast->get_status(attr_cast);
DBG1(DBG_IMV, "IPv4 forwarding is %N",
os_fwd_status_names, fwd_status);
if (fwd_status == OS_FWD_ENABLED)
{
os_state->set_os_settings(os_state,
OS_SETTINGS_FWD_ENABLED);
}
break;
}
case IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED:
{
ietf_attr_default_pwd_enabled_t *attr_cast;
bool default_pwd_status;
os_state->set_received(os_state,
IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED);
attr_cast = (ietf_attr_default_pwd_enabled_t*)attr;
default_pwd_status = attr_cast->get_status(attr_cast);
DBG1(DBG_IMV, "factory default password is %sabled",
default_pwd_status ? "en":"dis");
if (default_pwd_status)
{
os_state->set_os_settings(os_state,
OS_SETTINGS_DEFAULT_PWD_ENABLED);
}
break;
}
case IETF_ATTR_INSTALLED_PACKAGES:
{
ietf_attr_installed_packages_t *attr_cast;
enumerator_t *e;
status_t status;
os_state->set_received(os_state,
IMV_OS_ATTR_INSTALLED_PACKAGES);
if (!os_db)
{
break;
}
attr_cast = (ietf_attr_installed_packages_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
status = os_db->check_packages(os_db, os_state, e);
e->destroy(e);
if (status == FAILED)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
assessment = TRUE;
}
break;
}
default:
break;
}
}
else if (type.vendor_id == PEN_ITA)
{
switch (type.type)
{
case ITA_ATTR_SETTINGS:
{
ita_attr_settings_t *attr_cast;
enumerator_t *e;
char *name;
chunk_t value;
os_state->set_received(os_state, IMV_OS_ATTR_SETTINGS);
attr_cast = (ita_attr_settings_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
while (e->enumerate(e, &name, &value))
{
if (streq(name, "install_non_market_apps") &&
chunk_equals(value, chunk_from_chars('1')))
{
os_state->set_os_settings(os_state,
OS_SETTINGS_UNKNOWN_SOURCE);
}
DBG1(DBG_IMV, "setting '%s'\n %.*s",
name, value.len, value.ptr);
}
e->destroy(e);
break;
}
case ITA_ATTR_DEVICE_ID:
{
imv_session_t *session;
int device_id;
chunk_t value;
os_state->set_received(os_state, IMV_OS_ATTR_DEVICE_ID);
value = attr->get_value(attr);
DBG1(DBG_IMV, "device ID is %.*s", value.len, value.ptr);
if (imcv_db)
{
session = state->get_session(state);
device_id = imcv_db->add_device(imcv_db, session, value);
os_state->set_device_id(os_state, device_id);
}
break;
}
case ITA_ATTR_START_ANGEL:
os_state->set_angel_count(os_state, TRUE);
break;
case ITA_ATTR_STOP_ANGEL:
os_state->set_angel_count(os_state, FALSE);
break;
default:
break;
}
}
}
enumerator->destroy(enumerator);
/**
* The IETF Product Information and String Version attributes
* are supposed to arrive in the same PA-TNC message
*/
if (os_name.len && os_version.len)
{
os_type_t os_type;
/* set the OS type, name and version */
os_type = os_type_from_name(os_name);
os_state->set_info(os_state,os_type, os_name, os_version);
if (imcv_db)
{
imcv_db->add_product(imcv_db, state->get_session(state),
os_state->get_info(os_state, NULL, NULL, NULL));
}
}
if (fatal_error)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
assessment = TRUE;
}
if (assessment)
{
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_os->provide_recommendation(imv_os, state);
}
/* send PA-TNC message with 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-IMV Specification 1.3 * see section 3.8.4 of TCG TNC IF-IMV Specification 1.3
*/ */
@@ -424,25 +76,13 @@ TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id,
TNC_UInt32 msg_len, TNC_UInt32 msg_len,
TNC_MessageType msg_type) TNC_MessageType msg_type)
{ {
imv_state_t *state; if (!imv_agent)
imv_msg_t *in_msg;
TNC_Result result;
if (!imv_os)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED; return TNC_RESULT_NOT_INITIALIZED;
} }
if (!imv_os->get_state(imv_os, connection_id, &state)) return imv_agent->receive_message(imv_agent, connection_id, msg_type,
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_data(imv_os, state, connection_id, msg_type,
chunk_create(msg, msg_len)); chunk_create(msg, msg_len));
result = receive_message(state, in_msg);
in_msg->destroy(in_msg);
return result;
} }
/** /**
@@ -458,26 +98,14 @@ TNC_Result TNC_IMV_ReceiveMessageLong(TNC_IMVID imv_id,
TNC_UInt32 src_imc_id, TNC_UInt32 src_imc_id,
TNC_UInt32 dst_imv_id) TNC_UInt32 dst_imv_id)
{ {
imv_state_t *state; if (!imv_agent)
imv_msg_t *in_msg;
TNC_Result result;
if (!imv_os)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED; return TNC_RESULT_NOT_INITIALIZED;
} }
if (!imv_os->get_state(imv_os, connection_id, &state)) return imv_agent->receive_message_long(imv_agent, connection_id,
{ src_imc_id, dst_imv_id,
return TNC_RESULT_FATAL; msg_vid, msg_subtype, chunk_create(msg, msg_len));
}
in_msg = imv_msg_create_from_long_data(imv_os, state, connection_id,
src_imc_id, dst_imv_id, msg_vid, msg_subtype,
chunk_create(msg, msg_len));
result =receive_message(state, in_msg);
in_msg->destroy(in_msg);
return result;
} }
/** /**
@@ -486,18 +114,13 @@ TNC_Result TNC_IMV_ReceiveMessageLong(TNC_IMVID imv_id,
TNC_Result TNC_IMV_SolicitRecommendation(TNC_IMVID imv_id, TNC_Result TNC_IMV_SolicitRecommendation(TNC_IMVID imv_id,
TNC_ConnectionID connection_id) TNC_ConnectionID connection_id)
{ {
imv_state_t *state;
if (!imv_os) if (!imv_agent)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED; return TNC_RESULT_NOT_INITIALIZED;
} }
if (!imv_os->get_state(imv_os, connection_id, &state)) return imv_agent->solicit_recommendation(imv_agent, connection_id);
{
return TNC_RESULT_FATAL;
}
return imv_os->provide_recommendation(imv_os, state);
} }
/** /**
@@ -505,18 +128,12 @@ TNC_Result TNC_IMV_SolicitRecommendation(TNC_IMVID imv_id,
*/ */
TNC_Result TNC_IMV_BatchEnding(TNC_IMVID imv_id, TNC_ConnectionID connection_id) TNC_Result TNC_IMV_BatchEnding(TNC_IMVID imv_id, TNC_ConnectionID connection_id)
{ {
imv_state_t *state; if (!imv_agent)
if (!imv_os)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED; return TNC_RESULT_NOT_INITIALIZED;
} }
if (!imv_os->get_state(imv_os, connection_id, &state)) return imv_agent->batch_ending(imv_agent, connection_id);
{
return TNC_RESULT_FATAL;
}
return imv_os_batch_ending(imv_os, state, imv_id, msg_types[0]);
} }
/** /**
@@ -524,16 +141,13 @@ TNC_Result TNC_IMV_BatchEnding(TNC_IMVID imv_id, TNC_ConnectionID connection_id)
*/ */
TNC_Result TNC_IMV_Terminate(TNC_IMVID imv_id) TNC_Result TNC_IMV_Terminate(TNC_IMVID imv_id)
{ {
if (!imv_os) if (!imv_agent)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED; return TNC_RESULT_NOT_INITIALIZED;
} }
DESTROY_IF(os_db); imv_agent->destroy(imv_agent);
os_db = NULL; imv_agent = NULL;
imv_os->destroy(imv_os);
imv_os = NULL;
return TNC_RESULT_SUCCESS; return TNC_RESULT_SUCCESS;
} }
@@ -544,10 +158,10 @@ TNC_Result TNC_IMV_Terminate(TNC_IMVID imv_id)
TNC_Result TNC_IMV_ProvideBindFunction(TNC_IMVID imv_id, TNC_Result TNC_IMV_ProvideBindFunction(TNC_IMVID imv_id,
TNC_TNCS_BindFunctionPointer bind_function) TNC_TNCS_BindFunctionPointer bind_function)
{ {
if (!imv_os) if (!imv_agent)
{ {
DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name); DBG1(DBG_IMV, "IMV \"%s\" has not been initialized", imv_name);
return TNC_RESULT_NOT_INITIALIZED; return TNC_RESULT_NOT_INITIALIZED;
} }
return imv_os->bind_functions(imv_os, bind_function); return imv_agent->bind_functions(imv_agent, bind_function);
} }
src/libimcv/plugins/imv_os/imv_os_agent.c
+800
View File
@@ -0,0 +1,800 @@
/*
* Copyright (C) 2013 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.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include "imv_os_agent.h"
#include "imv_os_state.h"
#include "imv_os_database.h"
#include <imcv.h>
#include <imv/imv_agent.h>
#include <imv/imv_msg.h>
#include <ietf/ietf_attr.h>
#include <ietf/ietf_attr_attr_request.h>
#include <ietf/ietf_attr_default_pwd_enabled.h>
#include <ietf/ietf_attr_fwd_enabled.h>
#include <ietf/ietf_attr_installed_packages.h>
#include <ietf/ietf_attr_numeric_version.h>
#include <ietf/ietf_attr_op_status.h>
#include <ietf/ietf_attr_pa_tnc_error.h>
#include <ietf/ietf_attr_product_info.h>
#include <ietf/ietf_attr_remediation_instr.h>
#include <ietf/ietf_attr_string_version.h>
#include <ita/ita_attr.h>
#include <ita/ita_attr_get_settings.h>
#include <ita/ita_attr_settings.h>
#include <ita/ita_attr_angel.h>
#include <ita/ita_attr_device_id.h>
#include <tncif_names.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <utils/debug.h>
typedef struct private_imv_os_agent_t private_imv_os_agent_t;
typedef enum imv_os_attr_t imv_os_attr_t;
/* Subscribed PA-TNC message subtypes */
static pen_type_t msg_types[] = {
{ PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM }
};
static char unknown_source_str[] = "install_non_market_apps";
/**
* Flag set when corresponding attribute has been received
*/
enum imv_os_attr_t {
IMV_OS_ATTR_PRODUCT_INFORMATION = (1<<0),
IMV_OS_ATTR_STRING_VERSION = (1<<1),
IMV_OS_ATTR_NUMERIC_VERSION = (1<<2),
IMV_OS_ATTR_OPERATIONAL_STATUS = (1<<3),
IMV_OS_ATTR_FORWARDING_ENABLED = (1<<4),
IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED = (1<<5),
IMV_OS_ATTR_DEVICE_ID = (1<<6),
IMV_OS_ATTR_MUST = (1<<7)-1,
IMV_OS_ATTR_INSTALLED_PACKAGES = (1<<7),
IMV_OS_ATTR_SETTINGS = (1<<8)
};
/**
* Private data of an imv_os_agent_t object.
*/
struct private_imv_os_agent_t {
/**
* Public members of imv_os_agent_t
*/
imv_os_agent_t public;
/**
* IMV agent responsible for generic functions
*/
imv_agent_t *agent;
/**
* IMV OS database
*/
imv_os_database_t *db;
};
METHOD(imv_os_agent_t, bind_functions, TNC_Result,
private_imv_os_agent_t *this, TNC_TNCS_BindFunctionPointer bind_function)
{
return this->agent->bind_functions(this->agent, bind_function);
}
METHOD(imv_os_agent_t, notify_connection_change, TNC_Result,
private_imv_os_agent_t *this, TNC_ConnectionID id,
TNC_ConnectionState new_state)
{
TNC_IMV_Action_Recommendation rec;
imv_state_t *state;
imv_session_t *session;
switch (new_state)
{
case TNC_CONNECTION_STATE_CREATE:
state = imv_os_state_create(id);
return this->agent->create_state(this->agent, state);
case TNC_CONNECTION_STATE_DELETE:
return this->agent->delete_state(this->agent, id);
case TNC_CONNECTION_STATE_ACCESS_ALLOWED:
case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
case TNC_CONNECTION_STATE_ACCESS_NONE:
if (imcv_db && this->agent->get_state(this->agent, id, &state))
{
switch (new_state)
{
case TNC_CONNECTION_STATE_ACCESS_ALLOWED:
rec = TNC_IMV_ACTION_RECOMMENDATION_ALLOW;
break;
case TNC_CONNECTION_STATE_ACCESS_ISOLATED:
rec = TNC_IMV_ACTION_RECOMMENDATION_ISOLATE;
break;
case TNC_CONNECTION_STATE_ACCESS_NONE:
default:
rec = TNC_IMV_ACTION_RECOMMENDATION_NO_ACCESS;
}
session = state->get_session(state);
imcv_db->add_recommendation(imcv_db, session, rec);
imcv_db->policy_script(imcv_db, session, FALSE);
}
/* fall through to default state */
default:
return this->agent->change_state(this->agent, id, new_state, NULL);
}
}
/**
* Process a received message
*/
static TNC_Result receive_msg(private_imv_os_agent_t *this, imv_state_t *state,
imv_msg_t *in_msg)
{
imv_msg_t *out_msg;
imv_os_state_t *os_state;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t type;
TNC_Result result;
chunk_t os_name = chunk_empty;
chunk_t os_version = chunk_empty;
bool fatal_error = FALSE, assessment = FALSE;
os_state = (imv_os_state_t*)state;
/* parse received PA-TNC message and handle local and remote errors */
result = in_msg->receive(in_msg, &fatal_error);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
out_msg = imv_msg_create_as_reply(in_msg);
/* analyze PA-TNC attributes */
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
type = attr->get_type(attr);
if (type.vendor_id == PEN_IETF)
{
switch (type.type)
{
case IETF_ATTR_PRODUCT_INFORMATION:
{
ietf_attr_product_info_t *attr_cast;
pen_t vendor_id;
os_state->set_received(os_state,
IMV_OS_ATTR_PRODUCT_INFORMATION);
attr_cast = (ietf_attr_product_info_t*)attr;
os_name = attr_cast->get_info(attr_cast, &vendor_id, NULL);
if (vendor_id != PEN_IETF)
{
DBG1(DBG_IMV, "operating system name is '%.*s' "
"from vendor %N", os_name.len, os_name.ptr,
pen_names, vendor_id);
}
else
{
DBG1(DBG_IMV, "operating system name is '%.*s'",
os_name.len, os_name.ptr);
}
break;
}
case IETF_ATTR_STRING_VERSION:
{
ietf_attr_string_version_t *attr_cast;
os_state->set_received(os_state,
IMV_OS_ATTR_STRING_VERSION);
attr_cast = (ietf_attr_string_version_t*)attr;
os_version = attr_cast->get_version(attr_cast, NULL, NULL);
if (os_version.len)
{
DBG1(DBG_IMV, "operating system version is '%.*s'",
os_version.len, os_version.ptr);
}
break;
}
case IETF_ATTR_NUMERIC_VERSION:
{
ietf_attr_numeric_version_t *attr_cast;
u_int32_t major, minor;
os_state->set_received(os_state,
IMV_OS_ATTR_NUMERIC_VERSION);
attr_cast = (ietf_attr_numeric_version_t*)attr;
attr_cast->get_version(attr_cast, &major, &minor);
DBG1(DBG_IMV, "operating system numeric version is %d.%d",
major, minor);
break;
}
case IETF_ATTR_OPERATIONAL_STATUS:
{
ietf_attr_op_status_t *attr_cast;
op_status_t op_status;
op_result_t op_result;
time_t last_boot;
os_state->set_received(os_state,
IMV_OS_ATTR_OPERATIONAL_STATUS);
attr_cast = (ietf_attr_op_status_t*)attr;
op_status = attr_cast->get_status(attr_cast);
op_result = attr_cast->get_result(attr_cast);
last_boot = attr_cast->get_last_use(attr_cast);
DBG1(DBG_IMV, "operational status: %N, result: %N",
op_status_names, op_status, op_result_names, op_result);
DBG1(DBG_IMV, "last boot: %T", &last_boot, TRUE);
break;
}
case IETF_ATTR_FORWARDING_ENABLED:
{
ietf_attr_fwd_enabled_t *attr_cast;
os_fwd_status_t fwd_status;
os_state->set_received(os_state,
IMV_OS_ATTR_FORWARDING_ENABLED);
attr_cast = (ietf_attr_fwd_enabled_t*)attr;
fwd_status = attr_cast->get_status(attr_cast);
DBG1(DBG_IMV, "IPv4 forwarding is %N",
os_fwd_status_names, fwd_status);
if (fwd_status == OS_FWD_ENABLED)
{
os_state->set_os_settings(os_state,
OS_SETTINGS_FWD_ENABLED);
}
break;
}
case IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED:
{
ietf_attr_default_pwd_enabled_t *attr_cast;
bool default_pwd_status;
os_state->set_received(os_state,
IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED);
attr_cast = (ietf_attr_default_pwd_enabled_t*)attr;
default_pwd_status = attr_cast->get_status(attr_cast);
DBG1(DBG_IMV, "factory default password is %sabled",
default_pwd_status ? "en":"dis");
if (default_pwd_status)
{
os_state->set_os_settings(os_state,
OS_SETTINGS_DEFAULT_PWD_ENABLED);
}
break;
}
case IETF_ATTR_INSTALLED_PACKAGES:
{
ietf_attr_installed_packages_t *attr_cast;
enumerator_t *e;
status_t status;
os_state->set_received(os_state,
IMV_OS_ATTR_INSTALLED_PACKAGES);
if (!this->db)
{
break;
}
attr_cast = (ietf_attr_installed_packages_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
status = this->db->check_packages(this->db, os_state, e);
e->destroy(e);
if (status == FAILED)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
assessment = TRUE;
}
break;
}
default:
break;
}
}
else if (type.vendor_id == PEN_ITA)
{
switch (type.type)
{
case ITA_ATTR_SETTINGS:
{
ita_attr_settings_t *attr_cast;
enumerator_t *e;
char *name;
chunk_t value;
os_state->set_received(os_state, IMV_OS_ATTR_SETTINGS);
attr_cast = (ita_attr_settings_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
while (e->enumerate(e, &name, &value))
{
if (streq(name, unknown_source_str) &&
chunk_equals(value, chunk_from_chars('1')))
{
os_state->set_os_settings(os_state,
OS_SETTINGS_UNKNOWN_SOURCE);
}
DBG1(DBG_IMV, "setting '%s'\n %.*s",
name, value.len, value.ptr);
}
e->destroy(e);
break;
}
case ITA_ATTR_DEVICE_ID:
{
imv_session_t *session;
int device_id;
chunk_t value;
os_state->set_received(os_state, IMV_OS_ATTR_DEVICE_ID);
value = attr->get_value(attr);
DBG1(DBG_IMV, "device ID is %.*s", value.len, value.ptr);
if (imcv_db)
{
session = state->get_session(state);
device_id = imcv_db->add_device(imcv_db, session, value);
os_state->set_device_id(os_state, device_id);
}
break;
}
case ITA_ATTR_START_ANGEL:
os_state->set_angel_count(os_state, TRUE);
break;
case ITA_ATTR_STOP_ANGEL:
os_state->set_angel_count(os_state, FALSE);
break;
default:
break;
}
}
}
enumerator->destroy(enumerator);
/**
* The IETF Product Information and String Version attributes
* are supposed to arrive in the same PA-TNC message
*/
if (os_name.len && os_version.len)
{
os_type_t os_type;
/* set the OS type, name and version */
os_type = os_type_from_name(os_name);
os_state->set_info(os_state,os_type, os_name, os_version);
if (imcv_db)
{
imcv_db->add_product(imcv_db, state->get_session(state),
os_state->get_info(os_state, NULL, NULL, NULL));
}
}
if (fatal_error)
{
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
assessment = TRUE;
}
if (assessment)
{
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return this->agent->provide_recommendation(this->agent, state);
}
/* send PA-TNC message with excl flag set */
result = out_msg->send(out_msg, TRUE);
out_msg->destroy(out_msg);
return result;
}
METHOD(imv_os_agent_t, receive_message, TNC_Result,
private_imv_os_agent_t *this, TNC_ConnectionID id,
TNC_MessageType msg_type, chunk_t msg)
{
imv_state_t *state;
imv_msg_t *in_msg;
TNC_Result result;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_data(this->agent, state, id, msg_type, msg);
result = receive_msg(this, state, in_msg);
in_msg->destroy(in_msg);
return result;
}
METHOD(imv_os_agent_t, receive_message_long, TNC_Result,
private_imv_os_agent_t *this, TNC_ConnectionID id,
TNC_UInt32 src_imc_id, TNC_UInt32 dst_imv_id,
TNC_VendorID msg_vid, TNC_MessageSubtype msg_subtype, chunk_t msg)
{
imv_state_t *state;
imv_msg_t *in_msg;
TNC_Result result;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imv_msg_create_from_long_data(this->agent, state, id,
src_imc_id, dst_imv_id, msg_vid, msg_subtype, msg);
result = receive_msg(this, state, in_msg);
in_msg->destroy(in_msg);
return result;
}
/**
* Build an IETF Attribute Request attribute for missing attributes
*/
static pa_tnc_attr_t* build_attr_request(u_int received)
{
pa_tnc_attr_t *attr;
ietf_attr_attr_request_t *attr_cast;
attr = ietf_attr_attr_request_create(PEN_RESERVED, 0);
attr_cast = (ietf_attr_attr_request_t*)attr;
if (!(received & IMV_OS_ATTR_PRODUCT_INFORMATION) ||
!(received & IMV_OS_ATTR_STRING_VERSION))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_PRODUCT_INFORMATION);
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_STRING_VERSION);
}
if (!(received & IMV_OS_ATTR_NUMERIC_VERSION))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_NUMERIC_VERSION);
}
if (!(received & IMV_OS_ATTR_OPERATIONAL_STATUS))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_OPERATIONAL_STATUS);
}
if (!(received & IMV_OS_ATTR_FORWARDING_ENABLED))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_FORWARDING_ENABLED);
}
if (!(received & IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED))
{
attr_cast->add(attr_cast, PEN_IETF,
IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED);
}
if (!(received & IMV_OS_ATTR_DEVICE_ID))
{
attr_cast->add(attr_cast, PEN_ITA, ITA_ATTR_DEVICE_ID);
}
return attr;
}
METHOD(imv_os_agent_t, batch_ending, TNC_Result,
private_imv_os_agent_t *this, TNC_ConnectionID id)
{
imv_msg_t *out_msg;
imv_state_t *state;
imv_session_t *session;
imv_workitem_t *workitem;
imv_os_state_t *os_state;
imv_os_handshake_state_t handshake_state;
pa_tnc_attr_t *attr;
TNC_IMVID imv_id;
TNC_Result result = TNC_RESULT_SUCCESS;
bool no_workitems = TRUE;
enumerator_t *enumerator;
u_int received;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
os_state = (imv_os_state_t*)state;
handshake_state = os_state->get_handshake_state(os_state);
received = os_state->get_received(os_state);
session = state->get_session(state);
imv_id = this->agent->get_id(this->agent);
/* create an empty out message - we might need it */
out_msg = imv_msg_create(this->agent, state, id,
this->agent->get_id(this->agent),
TNC_IMCID_ANY, msg_types[0]);
if (handshake_state == IMV_OS_STATE_INIT)
{
if ((received & IMV_OS_ATTR_MUST) != IMV_OS_ATTR_MUST)
{
/* create attribute request for missing mandatory attributes */
out_msg->add_attribute(out_msg, build_attr_request(received));
}
}
if (handshake_state < IMV_OS_STATE_POLICY_START)
{
if (((received & IMV_OS_ATTR_PRODUCT_INFORMATION) &&
(received & IMV_OS_ATTR_STRING_VERSION)) &&
((received & IMV_OS_ATTR_DEVICE_ID) ||
(handshake_state == IMV_OS_STATE_ATTR_REQ)))
{
if (imcv_db)
{
/* trigger the policy manager */
imcv_db->policy_script(imcv_db, session, TRUE);
}
else
{
DBG2(DBG_IMV, "no workitems available - no evaluation possible");
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
TNC_IMV_EVALUATION_RESULT_DONT_KNOW);
}
handshake_state = IMV_OS_STATE_POLICY_START;
}
else if (handshake_state == IMV_OS_STATE_ATTR_REQ)
{
/**
* both the IETF Product Information and IETF String Version
* attribute should have been present
*/
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
/* send assessment */
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return this->agent->provide_recommendation(this->agent, state);
}
else
{
handshake_state = IMV_OS_STATE_ATTR_REQ;
}
os_state->set_handshake_state(os_state, handshake_state);
}
if (handshake_state == IMV_OS_STATE_POLICY_START && session)
{
enumerator = session->create_workitem_enumerator(session);
if (enumerator)
{
while (enumerator->enumerate(enumerator, &workitem))
{
if (workitem->get_imv_id(workitem) != TNC_IMVID_ANY)
{
continue;
}
no_workitems = FALSE;
switch (workitem->get_type(workitem))
{
case IMV_WORKITEM_PACKAGES:
attr = ietf_attr_attr_request_create(PEN_IETF,
IETF_ATTR_INSTALLED_PACKAGES);
out_msg->add_attribute(out_msg, attr);
break;
case IMV_WORKITEM_UNKNOWN_SOURCE:
attr = ita_attr_get_settings_create(unknown_source_str);
out_msg->add_attribute(out_msg, attr);
break;
case IMV_WORKITEM_FORWARDING:
case IMV_WORKITEM_DEFAULT_PWD:
break;
default:
continue;
}
workitem->set_imv_id(workitem, imv_id);
}
enumerator->destroy(enumerator);
if (no_workitems)
{
DBG2(DBG_IMV, "no workitems generated - no evaluation requested");
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
TNC_IMV_EVALUATION_RESULT_DONT_KNOW);
}
handshake_state = IMV_OS_STATE_WORKITEMS;
os_state->set_handshake_state(os_state, handshake_state);
}
}
if (handshake_state == IMV_OS_STATE_WORKITEMS && session)
{
TNC_IMV_Evaluation_Result eval;
TNC_IMV_Action_Recommendation rec;
char buf[BUF_LEN], *result_str;
bool fail;
enumerator = session->create_workitem_enumerator(session);
while (enumerator->enumerate(enumerator, &workitem))
{
if (workitem->get_imv_id(workitem) != imv_id)
{
continue;
}
eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW;
switch (workitem->get_type(workitem))
{
case IMV_WORKITEM_PACKAGES:
{
int count, count_update, count_blacklist, count_ok;
if (!(received & IMV_OS_ATTR_INSTALLED_PACKAGES) ||
os_state->get_angel_count(os_state))
{
continue;
}
os_state->get_count(os_state, &count, &count_update,
&count_blacklist, &count_ok);
fail = count_update || count_blacklist;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
snprintf(buf, BUF_LEN, "processed %d packages: "
"%d not updated, %d blacklisted, %d ok, "
"%d not found",
count, count_update, count_blacklist, count_ok,
count - count_update - count_blacklist - count_ok);
result_str = buf;
break;
}
case IMV_WORKITEM_UNKNOWN_SOURCE:
if (!(received & IMV_OS_ATTR_SETTINGS))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_UNKNOWN_SOURCE;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "unknown sources enabled" : "";
break;
case IMV_WORKITEM_FORWARDING:
if (!(received & IMV_OS_ATTR_FORWARDING_ENABLED))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_FWD_ENABLED;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "forwarding enabled" : "";
break;
case IMV_WORKITEM_DEFAULT_PWD:
if (!(received & IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_DEFAULT_PWD_ENABLED;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "default password enabled" : "";
break;
default:
continue;
}
if (eval != TNC_IMV_EVALUATION_RESULT_DONT_KNOW)
{
session->remove_workitem(session, enumerator);
rec = workitem->set_result(workitem, result_str, eval);
state->update_recommendation(state, rec, eval);
imcv_db->finalize_workitem(imcv_db, workitem);
workitem->destroy(workitem);
}
}
enumerator->destroy(enumerator);
/* finalized all workitems ? */
if (session->get_workitem_count(session, imv_id) == 0)
{
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return this->agent->provide_recommendation(this->agent, state);
}
}
/* send non-empty PA-TNC message with excl flag not set */
if (out_msg->get_attribute_count(out_msg))
{
result = out_msg->send(out_msg, FALSE);
}
out_msg->destroy(out_msg);
return result;
}
METHOD(imv_os_agent_t, solicit_recommendation, TNC_Result,
private_imv_os_agent_t *this, TNC_ConnectionID id)
{
imv_state_t *state;
if (!this->agent->get_state(this->agent, id, &state))
{
return TNC_RESULT_FATAL;
}
return this->agent->provide_recommendation(this->agent, state);
}
METHOD(imv_os_agent_t, destroy, void,
private_imv_os_agent_t *this)
{
DESTROY_IF(this->agent);
DESTROY_IF(this->db);
free(this);
}
/**
* Described in header.
*/
imv_os_agent_t *imv_os_agent_create(const char *name, TNC_IMVID id,
TNC_Version *actual_version)
{
private_imv_os_agent_t *this;
INIT(this,
.public = {
.bind_functions = _bind_functions,
.notify_connection_change = _notify_connection_change,
.receive_message = _receive_message,
.receive_message_long = _receive_message_long,
.batch_ending = _batch_ending,
.solicit_recommendation = _solicit_recommendation,
.destroy = _destroy,
},
.agent = imv_agent_create(name, msg_types, countof(msg_types), id,
actual_version),
.db = imv_os_database_create(imcv_db),
);
if (!this->agent)
{
destroy(this);
return NULL;
}
return &this->public;
}
src/libimcv/plugins/imv_os/imv_os_agent.h
+120
View File
@@ -0,0 +1,120 @@
/*
* Copyright (C) 2013 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 imv_os_agent_t imv_os_agent
* @{ @ingroup imv_os
*/
#ifndef IMV_OS_AGENT_H_
#define IMV_OS_AGENT_H_
#include <imv/imv_state.h>
#include <imv/imv_msg.h>
#include <tncif.h>
typedef struct imv_os_agent_t imv_os_agent_t;
/**
* Public interface of the OS IMV agent
*/
struct imv_os_agent_t {
/**
* Implements the TNC_IMV_ProvideBindFunction function of the OS IMV
*
* @param bind_function Function offered by the TNCS
* @return TNC result code
*/
TNC_Result (*bind_functions)(imv_os_agent_t *this,
TNC_TNCS_BindFunctionPointer bind_function);
/**
* Implements the TNC_IMV_NotifyConnectionChange() function of the OS IMV
*
* @param id Network connection ID assigned by TNCS
* @param new_state New connection state to be set
* @return TNC result code
*/
TNC_Result (*notify_connection_change)(imv_os_agent_t *this,
TNC_ConnectionID id,
TNC_ConnectionState new_state);
/**
* Implements the TNC_IMV_ReceiveMessage() function of the OS IMV
*
* @param id Network connection ID assigned by TNCS
* @param msg_type PA-TNC message type
* @param msg Received message
* @return TNC result code
*/
TNC_Result (*receive_message)(imv_os_agent_t *this, TNC_ConnectionID id,
TNC_MessageType msg_type, chunk_t msg);
/**
* Implements the TNC_IMV_ReceiveMessageLong() function of the OS IMV
*
* @param id Network connection ID assigned by TNCS
* @param src_imc_id ID of source IMC
* @param dst_imv_id ID of destination IMV
* @param msg_vid Vendor ID of message type
* @param msg_subtype PA-TNC message subtype
* @param msg Received message
* @return TNC result code
*/
TNC_Result (*receive_message_long)(imv_os_agent_t *this,
TNC_ConnectionID id,
TNC_UInt32 src_imc_id,
TNC_UInt32 dst_imv_id,
TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype,
chunk_t msg);
/**
* Implements the TNC_IMV_BatchEnding() function of the OS IMV
*
* @param id Network connection ID assigned by TNCS
* @return TNC result code
*/
TNC_Result (*batch_ending)(imv_os_agent_t *this, TNC_ConnectionID id);
/**
* Implements the TNC_IMV_SolicitRecommendation() function of the OS IMV
*
* @param id Network connection ID assigned by TNCS
* @return TNC result code
*/
TNC_Result (*solicit_recommendation)(imv_os_agent_t *this,
TNC_ConnectionID id);
/**
* Destroys an imv_os_agent_t object
*/
void (*destroy)(imv_os_agent_t *this);
};
/**
* Creates the an OS IMV agent
*
* @param name Name of the IMV
* @param id ID of the IMV
* @param actual_version TNC IF-IMV version
*/
imv_os_agent_t* imv_os_agent_create(const char* name, TNC_IMVID id,
TNC_Version *actual_version);
#endif /** IMV_OS_AGENT_H_ @}*/
src/libimcv/plugins/imv_os/imv_os_batch_ending.c
-311
View File
@@ -1,311 +0,0 @@
/*
* Copyright (C) 2013 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 "imv_os_batch_ending.h"
#include "imv_os_state.h"
#include "imv_os_database.h"
#include <imcv.h>
#include <imv/imv_msg.h>
#include <ietf/ietf_attr_attr_request.h>
#include <ita/ita_attr.h>
#include <ita/ita_attr_get_settings.h>
#include <utils/debug.h>
/**
* Build an IETF Attribute Request attribute for missing attributes
*/
static pa_tnc_attr_t* build_attr_request(u_int received)
{
pa_tnc_attr_t *attr;
ietf_attr_attr_request_t *attr_cast;
attr = ietf_attr_attr_request_create(PEN_RESERVED, 0);
attr_cast = (ietf_attr_attr_request_t*)attr;
if (!(received & IMV_OS_ATTR_PRODUCT_INFORMATION) ||
!(received & IMV_OS_ATTR_STRING_VERSION))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_PRODUCT_INFORMATION);
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_STRING_VERSION);
}
if (!(received & IMV_OS_ATTR_NUMERIC_VERSION))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_NUMERIC_VERSION);
}
if (!(received & IMV_OS_ATTR_OPERATIONAL_STATUS))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_OPERATIONAL_STATUS);
}
if (!(received & IMV_OS_ATTR_FORWARDING_ENABLED))
{
attr_cast->add(attr_cast, PEN_IETF, IETF_ATTR_FORWARDING_ENABLED);
}
if (!(received & IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED))
{
attr_cast->add(attr_cast, PEN_IETF,
IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED);
}
if (!(received & IMV_OS_ATTR_DEVICE_ID))
{
attr_cast->add(attr_cast, PEN_ITA, ITA_ATTR_DEVICE_ID);
}
return attr;
}
/**
* See header
*/
TNC_Result imv_os_batch_ending(imv_agent_t *imv_os, imv_state_t *state,
TNC_IMVID imv_id, pen_type_t msg_type)
{
imv_msg_t *out_msg;
imv_session_t *session;
imv_workitem_t *workitem;
imv_os_state_t *os_state;
imv_os_handshake_state_t handshake_state;
pa_tnc_attr_t *attr;
TNC_ConnectionID connection_id;
TNC_Result result = TNC_RESULT_SUCCESS;
bool no_workitems = TRUE;
enumerator_t *enumerator;
u_int received;
os_state = (imv_os_state_t*)state;
handshake_state = os_state->get_handshake_state(os_state);
received = os_state->get_received(os_state);
connection_id = state->get_connection_id(state);
session = state->get_session(state);
/* create an empty out message - we might need it */
out_msg = imv_msg_create(imv_os, state, connection_id, imv_id,
TNC_IMCID_ANY, msg_type);
if (handshake_state == IMV_OS_STATE_INIT)
{
if ((received & IMV_OS_ATTR_MUST) != IMV_OS_ATTR_MUST)
{
/* create attribute request for missing mandatory attributes */
out_msg->add_attribute(out_msg, build_attr_request(received));
}
}
if (handshake_state < IMV_OS_STATE_POLICY_START)
{
if (((received & IMV_OS_ATTR_PRODUCT_INFORMATION) &&
(received & IMV_OS_ATTR_STRING_VERSION)) &&
((received & IMV_OS_ATTR_DEVICE_ID) ||
(handshake_state == IMV_OS_STATE_ATTR_REQ)))
{
if (imcv_db)
{
/* trigger the policy manager */
imcv_db->policy_script(imcv_db, session, TRUE);
}
else
{
DBG2(DBG_IMV, "no workitems available - no evaluation possible");
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
TNC_IMV_EVALUATION_RESULT_DONT_KNOW);
}
handshake_state = IMV_OS_STATE_POLICY_START;
}
else if (handshake_state == IMV_OS_STATE_ATTR_REQ)
{
/**
* both the IETF Product Information and IETF String Version
* attribute should have been present
*/
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
TNC_IMV_EVALUATION_RESULT_ERROR);
/* send assessment */
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_os->provide_recommendation(imv_os, state);
}
else
{
handshake_state = IMV_OS_STATE_ATTR_REQ;
}
os_state->set_handshake_state(os_state, handshake_state);
}
if (handshake_state == IMV_OS_STATE_POLICY_START && session)
{
enumerator = session->create_workitem_enumerator(session);
if (enumerator)
{
while (enumerator->enumerate(enumerator, &workitem))
{
if (workitem->get_imv_id(workitem) != TNC_IMVID_ANY)
{
continue;
}
no_workitems = FALSE;
switch (workitem->get_type(workitem))
{
case IMV_WORKITEM_PACKAGES:
attr = ietf_attr_attr_request_create(PEN_IETF,
IETF_ATTR_INSTALLED_PACKAGES);
out_msg->add_attribute(out_msg, attr);
break;
case IMV_WORKITEM_UNKNOWN_SOURCE:
attr = ita_attr_get_settings_create(
"install_non_market_apps");
out_msg->add_attribute(out_msg, attr);
break;
case IMV_WORKITEM_FORWARDING:
case IMV_WORKITEM_DEFAULT_PWD:
break;
default:
continue;
}
workitem->set_imv_id(workitem, imv_id);
}
enumerator->destroy(enumerator);
if (no_workitems)
{
DBG2(DBG_IMV, "no workitems generated - no evaluation requested");
state->set_recommendation(state,
TNC_IMV_ACTION_RECOMMENDATION_ALLOW,
TNC_IMV_EVALUATION_RESULT_DONT_KNOW);
}
handshake_state = IMV_OS_STATE_WORKITEMS;
os_state->set_handshake_state(os_state, handshake_state);
}
}
if (handshake_state == IMV_OS_STATE_WORKITEMS && session)
{
TNC_IMV_Evaluation_Result eval;
TNC_IMV_Action_Recommendation rec;
char buf[BUF_LEN], *result_str;
bool fail;
enumerator = session->create_workitem_enumerator(session);
while (enumerator->enumerate(enumerator, &workitem))
{
if (workitem->get_imv_id(workitem) != imv_id)
{
continue;
}
eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW;
switch (workitem->get_type(workitem))
{
case IMV_WORKITEM_PACKAGES:
{
int count, count_update, count_blacklist, count_ok;
if (!(received & IMV_OS_ATTR_INSTALLED_PACKAGES) ||
os_state->get_angel_count(os_state))
{
continue;
}
os_state->get_count(os_state, &count, &count_update,
&count_blacklist, &count_ok);
fail = count_update || count_blacklist;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
snprintf(buf, BUF_LEN, "processed %d packages: "
"%d not updated, %d blacklisted, %d ok, "
"%d not found",
count, count_update, count_blacklist, count_ok,
count - count_update - count_blacklist - count_ok);
result_str = buf;
break;
}
case IMV_WORKITEM_UNKNOWN_SOURCE:
if (!(received & IMV_OS_ATTR_SETTINGS))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_UNKNOWN_SOURCE;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MINOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "unknown sources enabled" : "";
break;
case IMV_WORKITEM_FORWARDING:
if (!(received & IMV_OS_ATTR_FORWARDING_ENABLED))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_FWD_ENABLED;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "forwarding enabled" : "";
break;
case IMV_WORKITEM_DEFAULT_PWD:
if (!(received & IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED))
{
continue;
}
fail = os_state->get_os_settings(os_state) &
OS_SETTINGS_DEFAULT_PWD_ENABLED;
eval = fail ? TNC_IMV_EVALUATION_RESULT_NONCOMPLIANT_MAJOR :
TNC_IMV_EVALUATION_RESULT_COMPLIANT;
result_str = fail ? "default password enabled" : "";
break;
default:
continue;
}
if (eval != TNC_IMV_EVALUATION_RESULT_DONT_KNOW)
{
session->remove_workitem(session, enumerator);
rec = workitem->set_result(workitem, result_str, eval);
state->update_recommendation(state, rec, eval);
imcv_db->finalize_workitem(imcv_db, workitem);
workitem->destroy(workitem);
}
}
enumerator->destroy(enumerator);
/* finalized all workitems ? */
if (session->get_workitem_count(session, imv_id) == 0)
{
result = out_msg->send_assessment(out_msg);
out_msg->destroy(out_msg);
if (result != TNC_RESULT_SUCCESS)
{
return result;
}
return imv_os->provide_recommendation(imv_os, state);
}
}
/* send non-empty PA-TNC message with excl flag not set */
if (out_msg->get_attribute_count(out_msg))
{
result = out_msg->send(out_msg, FALSE);
}
out_msg->destroy(out_msg);
return result;
}
src/libimcv/plugins/imv_os/imv_os_batch_ending.h
-40
View File
@@ -1,40 +0,0 @@
/*
* Copyright (C) 2013 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 imv_os_batch_ending_t imv_os_batch_ending
* @{ @ingroup imv_os
*/
#ifndef IMV_OS_BATCH_ENDING_H_
#define IMV_OS_BATCH_ENDING_H_
#include <tncif.h>
#include <imv/imv_agent.h>
/**
* Implement the TNC_IMV_BatchEnding() function of the OS IMV
*
* @param imv_os IMV agent
* @param state connection state
* @param imv_id IMV ID
* @param msg_type PA-TNC message subtype
* @return Result code
*/
TNC_Result imv_os_batch_ending(imv_agent_t *imv_os, imv_state_t *state,
TNC_IMVID imv_id, pen_type_t msg_type);
#endif /** IMV_OS_BATCH_ENDING_H_ @}*/
src/libimcv/plugins/imv_os/imv_os_state.h
-17
View File
@@ -30,7 +30,6 @@
typedef struct imv_os_state_t imv_os_state_t; typedef struct imv_os_state_t imv_os_state_t;
typedef enum imv_os_handshake_state_t imv_os_handshake_state_t; typedef enum imv_os_handshake_state_t imv_os_handshake_state_t;
typedef enum imv_os_attr_t imv_os_attr_t;
typedef enum os_settings_t os_settings_t; typedef enum os_settings_t os_settings_t;
/** /**
@@ -43,22 +42,6 @@ enum imv_os_handshake_state_t {
IMV_OS_STATE_WORKITEMS IMV_OS_STATE_WORKITEMS
}; };
/**
* Flag set when corresponding attribute has been received
*/
enum imv_os_attr_t {
IMV_OS_ATTR_PRODUCT_INFORMATION = (1<<0),
IMV_OS_ATTR_STRING_VERSION = (1<<1),
IMV_OS_ATTR_NUMERIC_VERSION = (1<<2),
IMV_OS_ATTR_OPERATIONAL_STATUS = (1<<3),
IMV_OS_ATTR_FORWARDING_ENABLED = (1<<4),
IMV_OS_ATTR_FACTORY_DEFAULT_PWD_ENABLED = (1<<5),
IMV_OS_ATTR_DEVICE_ID = (1<<6),
IMV_OS_ATTR_MUST = (1<<7)-1,
IMV_OS_ATTR_INSTALLED_PACKAGES = (1<<7),
IMV_OS_ATTR_SETTINGS = (1<<8)
};
/** /**
* Flags for detected OS Settings * Flags for detected OS Settings
*/ */