android: Added a sample IMC that sends some dummy OS data

This commit is contained in:
Tobias Brunner
2013-07-08 18:49:26 +02:00
parent 933155fae6
commit 96658d7264
7 changed files with 657 additions and 3 deletions
@@ -14,6 +14,12 @@ kernel/android_net.c \
kernel/network_manager.c \
vpnservice_builder.c
ifneq ($(strongswan_USE_BYOD),)
LOCAL_SRC_FILES += \
byod/imc_android_state.c \
byod/imc_android.c
endif
# build libandroidbridge -------------------------------------------------------
LOCAL_C_INCLUDES += \
@@ -23,6 +29,14 @@ LOCAL_C_INCLUDES += \
$(strongswan_PATH)/src/libcharon \
$(strongswan_PATH)/src/libstrongswan
ifneq ($(strongswan_USE_BYOD),)
LOCAL_C_INCLUDES += \
$(strongswan_PATH)/src/libimcv \
$(strongswan_PATH)/src/libtncif \
$(strongswan_PATH)/src/libtnccs \
$(strongswan_PATH)/src/libtls
endif
LOCAL_CFLAGS := $(strongswan_CFLAGS) \
-DPLUGINS='"$(strongswan_CHARON_PLUGINS)"'
@@ -38,6 +52,10 @@ LOCAL_LDLIBS := -llog
LOCAL_SHARED_LIBRARIES := libstrongswan libhydra libipsec libcharon
ifneq ($(strongswan_USE_BYOD),)
LOCAL_SHARED_LIBRARIES += libimcv libtncif libtnccs
endif
include $(BUILD_SHARED_LIBRARY)
@@ -0,0 +1,389 @@
/*
* Copyright (C) 2012-2013 Tobias Brunner
* Copyright (C) 2011-2012 Andreas Steffen
* 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_android_state.h"
#include <tnc/tnc.h>
#include <imc/imc_agent.h>
#include <imc/imc_msg.h>
#include <pa_tnc/pa_tnc_msg.h>
#include <ietf/ietf_attr.h>
#include <ietf/ietf_attr_attr_request.h>
#include <ietf/ietf_attr_installed_packages.h>
#include <ietf/ietf_attr_product_info.h>
#include <ietf/ietf_attr_string_version.h>
#include <os_info/os_info.h>
#include <tncif_pa_subtypes.h>
#include <pen/pen.h>
#include <utils/debug.h>
#include <stdio.h>
/* IMC definitions */
static const char imc_name[] = "Android";
static pen_type_t msg_types[] = {
{ PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM }
};
static imc_agent_t *imc_android;
/**
* 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_android)
{
DBG1(DBG_IMC, "IMC \"%s\" has already been initialized", imc_name);
return TNC_RESULT_ALREADY_INITIALIZED;
}
imc_android = imc_agent_create(imc_name, msg_types, countof(msg_types),
imc_id, actual_version);
if (!imc_android)
{
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_android)
{
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_android_state_create(connection_id);
return imc_android->create_state(imc_android, state);
case TNC_CONNECTION_STATE_HANDSHAKE:
if (imc_android->change_state(imc_android, 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_android->delete_state(imc_android, connection_id);
default:
return imc_android->change_state(imc_android, connection_id,
new_state, NULL);
}
}
/**
* Add IETF Product Information attribute to the send queue
*/
static void add_product_info(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
chunk_t android_os = { "Android", 7 };
attr = ietf_attr_product_info_create(PEN_IETF, 0, android_os);
msg->add_attribute(msg, attr);
}
/**
* Add IETF String Version attribute to the send queue
*/
static void add_string_version(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
chunk_t android_version = { "4.x", 3 };
attr = ietf_attr_string_version_create(android_version, chunk_empty,
chunk_empty);
msg->add_attribute(msg, attr);
}
/**
* Add an IETF Installed Packages attribute to the send queue
*/
static void add_installed_packages(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
ietf_attr_installed_packages_t *attr_cast;
chunk_t libc_name = { "libc-bin", 8 };
chunk_t libc_version = { "2.15-0ubuntu10.2", 16 };
chunk_t selinux_name = { "selinux", 7 };
chunk_t selinux_version = { "1:0.11", 6 };
attr = ietf_attr_installed_packages_create();
attr_cast = (ietf_attr_installed_packages_t*)attr;
attr_cast->add(attr_cast, libc_name, libc_version);
attr_cast->add(attr_cast, selinux_name, selinux_version);
msg->add_attribute(msg, attr);
}
/**
* 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;
TNC_Result result = TNC_RESULT_SUCCESS;
if (!imc_android)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imc_android->get_state(imc_android, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
if (lib->settings->get_bool(lib->settings,
"android.imc.send_os_info", TRUE))
{
out_msg = imc_msg_create(imc_android, state, connection_id, imc_id,
TNC_IMVID_ANY, msg_types[0]);
add_product_info(out_msg);
add_string_version(out_msg);
/* send PA-TNC message with the excl flag not set */
result = out_msg->send(out_msg, FALSE);
out_msg->destroy(out_msg);
}
return result;
}
static TNC_Result receive_message(imc_msg_t *in_msg)
{
imc_msg_t *out_msg;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t attr_type;
TNC_Result result;
bool fatal_error = FALSE;
/* 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 = imc_msg_create_as_reply(in_msg);
/* analyze PA-TNC attributes */
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
attr_type = attr->get_type(attr);
if (attr_type.vendor_id != PEN_IETF)
{
continue;
}
if (attr_type.type == IETF_ATTR_ATTRIBUTE_REQUEST)
{
ietf_attr_attr_request_t *attr_cast;
pen_type_t *entry;
enumerator_t *e;
attr_cast = (ietf_attr_attr_request_t*)attr;
e = attr_cast->create_enumerator(attr_cast);
while (e->enumerate(e, &entry))
{
if (entry->vendor_id != PEN_IETF)
{
continue;
}
switch (entry->type)
{
case IETF_ATTR_PRODUCT_INFORMATION:
add_product_info(out_msg);
break;
case IETF_ATTR_STRING_VERSION:
add_string_version(out_msg);
break;
case IETF_ATTR_INSTALLED_PACKAGES:
add_installed_packages(out_msg);
break;
default:
break;
}
}
e->destroy(e);
}
}
enumerator->destroy(enumerator);
if (fatal_error)
{
result = TNC_RESULT_FATAL;
}
else
{
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_android)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imc_android->get_state(imc_android, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imc_msg_create_from_data(imc_android, state, connection_id,
msg_type, chunk_create(msg, msg_len));
result = receive_message(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_android)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imc_android->get_state(imc_android, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imc_msg_create_from_long_data(imc_android, state, connection_id,
src_imv_id, dst_imc_id,msg_vid, msg_subtype,
chunk_create(msg, msg_len));
result =receive_message(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_android)
{
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_android)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
imc_android->destroy(imc_android);
imc_android = 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_android)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
return imc_android->bind_functions(imc_android, bind_function);
}
/*
* Described in header
*/
bool imc_android_register(plugin_t *plugin, plugin_feature_t *feature,
bool reg, void *data)
{
if (reg)
{
return tnc->imcs->load_from_functions(tnc->imcs, "android",
TNC_IMC_Initialize, TNC_IMC_NotifyConnectionChange,
TNC_IMC_BeginHandshake, TNC_IMC_ReceiveMessage,
TNC_IMC_ReceiveMessageLong, TNC_IMC_BatchEnding,
TNC_IMC_Terminate, TNC_IMC_ProvideBindFunction);
}
return TRUE;
}
@@ -0,0 +1,30 @@
/*
* Copyright (C) 2013 Tobias Brunner
* 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 android_imc android_imc
* @{ @ingroup android_byod
*/
#ifndef ANDROID_IMC_H_
#define ANDROID_IMC_H_
/**
* Callback for the Android IMC plugin
*/
bool imc_android_register(plugin_t *plugin, plugin_feature_t *feature,
bool reg, void *data);
#endif /** ANDROID_IMC_H_ @}*/
@@ -0,0 +1,157 @@
/*
* Copyright (C) 2012 Tobias Brunner
* Copyright (C) 2012 Andreas Steffen
* 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_android_state.h"
#include <tncif_names.h>
#include <utils/debug.h>
typedef struct private_imc_state_t private_imc_state_t;
/**
* Private data of an imc_state_t object.
*/
struct private_imc_state_t {
/**
* Public interface
*/
imc_state_t public;
/**
* TNCCS connection ID
*/
TNC_ConnectionID connection_id;
/**
* TNCCS connection state
*/
TNC_ConnectionState state;
/**
* Assessment/Evaluation Result
*/
TNC_IMV_Evaluation_Result result;
/**
* Does the TNCCS connection support long message types?
*/
bool has_long;
/**
* Does the TNCCS connection support exclusive delivery?
*/
bool has_excl;
/**
* Maximum PA-TNC message size for this TNCCS connection
*/
u_int32_t max_msg_len;
};
METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
private_imc_state_t *this)
{
return this->connection_id;
}
METHOD(imc_state_t, has_long, bool,
private_imc_state_t *this)
{
return this->has_long;
}
METHOD(imc_state_t, has_excl, bool,
private_imc_state_t *this)
{
return this->has_excl;
}
METHOD(imc_state_t, set_flags, void,
private_imc_state_t *this, bool has_long, bool has_excl)
{
this->has_long = has_long;
this->has_excl = has_excl;
}
METHOD(imc_state_t, set_max_msg_len, void,
private_imc_state_t *this, u_int32_t max_msg_len)
{
this->max_msg_len = max_msg_len;
}
METHOD(imc_state_t, get_max_msg_len, u_int32_t,
private_imc_state_t *this)
{
return this->max_msg_len;
}
METHOD(imc_state_t, change_state, void,
private_imc_state_t *this, TNC_ConnectionState new_state)
{
this->state = new_state;
}
METHOD(imc_state_t, set_result, void,
private_imc_state_t *this, TNC_IMCID id, TNC_IMV_Evaluation_Result result)
{
this->result = result;
}
METHOD(imc_state_t, get_result, bool,
private_imc_state_t *this, TNC_IMCID id, TNC_IMV_Evaluation_Result *result)
{
if (result)
{
*result = this->result;
}
return this->result != TNC_IMV_EVALUATION_RESULT_DONT_KNOW;
}
METHOD(imc_state_t, destroy, void,
private_imc_state_t *this)
{
free(this);
}
/**
* Described in header.
*/
imc_state_t *imc_android_state_create(TNC_ConnectionID connection_id)
{
private_imc_state_t *this;
INIT(this,
.public = {
.get_connection_id = _get_connection_id,
.has_long = _has_long,
.has_excl = _has_excl,
.set_flags = _set_flags,
.set_max_msg_len = _set_max_msg_len,
.get_max_msg_len = _get_max_msg_len,
.change_state = _change_state,
.set_result = _set_result,
.get_result = _get_result,
.destroy = _destroy,
},
.state = TNC_CONNECTION_STATE_CREATE,
.result = TNC_IMV_EVALUATION_RESULT_DONT_KNOW,
.connection_id = connection_id,
);
return &this->public;
}
@@ -0,0 +1,33 @@
/*
* Copyright (C) 2012 Tobias Brunner
* 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 imc_android_state imc_android_state
* @{ @ingroup android_byod
*/
#ifndef IMC_ANDROID_STATE_H_
#define IMC_ANDROID_STATE_H_
#include <imc/imc_state.h>
/**
* Create an imc_android_state_t instance
*
* @param id connection ID
*/
imc_state_t* imc_android_state_create(TNC_ConnectionID id);
#endif /** IMC_ANDROID_STATE_H_ @}*/
@@ -30,6 +30,10 @@
#include "kernel/android_ipsec.h"
#include "kernel/android_net.h"
#ifdef USE_BYOD
#include "byod/imc_android.h"
#endif
#include <daemon.h>
#include <hydra.h>
#include <ipsec.h>
@@ -357,7 +361,7 @@ static void initiate(char *type, char *gateway, char *username, char *password)
/**
* Initialize/deinitialize Android backend
*/
static bool charonservice_register(void *plugin, plugin_feature_t *feature,
static bool charonservice_register(plugin_t *plugin, plugin_feature_t *feature,
bool reg, void *data)
{
private_charonservice_t *this = (private_charonservice_t*)charonservice;
@@ -434,6 +438,13 @@ static void set_options(char *logfile)
lib->settings->set_str(lib->settings,
"charon.interfaces_ignore", "lo, tun0, tun1, tun2, tun3, "
"tun4");
#ifdef USE_BYOD
lib->settings->set_str(lib->settings,
"charon.plugins.eap-tnc.protocol", "tnccs-2.0");
lib->settings->set_bool(lib->settings,
"android.imc.send_os_info", TRUE);
#endif
}
/**
@@ -445,10 +456,18 @@ static void charonservice_init(JNIEnv *env, jobject service, jobject builder)
static plugin_feature_t features[] = {
PLUGIN_CALLBACK(kernel_ipsec_register, kernel_android_ipsec_create),
PLUGIN_PROVIDE(CUSTOM, "kernel-ipsec"),
PLUGIN_CALLBACK((plugin_feature_callback_t)charonservice_register, NULL),
PLUGIN_PROVIDE(CUSTOM, "Android backend"),
PLUGIN_CALLBACK(charonservice_register, NULL),
PLUGIN_PROVIDE(CUSTOM, "android-backend"),
PLUGIN_DEPENDS(CUSTOM, "libcharon"),
};
#ifdef USE_BYOD
static plugin_feature_t byod_features[] = {
PLUGIN_CALLBACK(imc_android_register, NULL),
PLUGIN_PROVIDE(CUSTOM, "android-imc"),
PLUGIN_DEPENDS(CUSTOM, "android-backend"),
PLUGIN_DEPENDS(CUSTOM, "imc-manager"),
};
#endif
INIT(this,
.public = {
@@ -471,6 +490,11 @@ static void charonservice_init(JNIEnv *env, jobject service, jobject builder)
lib->plugins->add_static_features(lib->plugins, "androidbridge", features,
countof(features), TRUE);
#ifdef USE_BYOD
lib->plugins->add_static_features(lib->plugins, "android-byod",
byod_features, countof(byod_features), TRUE);
#endif
}
/**
@@ -21,6 +21,9 @@
* @defgroup android_backend backend
* @ingroup libandroidbridge
*
* @defgroup android_byod byod
* @ingroup libandroidbridge
*
* @defgroup android_kernel kernel
* @ingroup libandroidbridge
*