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refactored PA-TNC message handling by IMCs

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This commit is contained in:
Andreas Steffen
2012-10-17 10:02:53 +02:00
parent 154cae09e3
commit f8a70254a9
15 changed files with 898 additions and 606 deletions
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src/libimcv/plugins/imc_os/imc_os.c
+84 -99
View File
@@ -16,15 +16,14 @@
#include "imc_os_state.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_assess_result.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_op_status.h>
#include <ietf/ietf_attr_pa_tnc_error.h>
#include <ietf/ietf_attr_product_info.h>
#include <ietf/ietf_attr_string_version.h>
#include <os_info/os_info.h>
@@ -120,30 +119,30 @@ TNC_Result TNC_IMC_NotifyConnectionChange(TNC_IMCID imc_id,
/**
* Add IETF Product Information attribute to the send queue
*/
static void add_product_info(linked_list_t *attr_list)
static void add_product_info(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
attr = ietf_attr_product_info_create(PEN_IETF, 0, os->get_name(os));
attr_list->insert_last(attr_list, attr);
msg->add_attribute(msg, attr);
}
/**
* Add IETF String Version attribute to the send queue
*/
static void add_string_version(linked_list_t *attr_list)
static void add_string_version(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
attr = ietf_attr_string_version_create(os->get_version(os),
chunk_empty, chunk_empty);
attr_list->insert_last(attr_list, attr);
msg->add_attribute(msg, attr);
}
/**
* Add IETF Operational Status attribute to the send queue
*/
static void add_op_status(linked_list_t *attr_list)
static void add_op_status(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
time_t uptime, last_boot;
@@ -156,13 +155,13 @@ static void add_op_status(linked_list_t *attr_list)
}
attr = ietf_attr_op_status_create(OP_STATUS_OPERATIONAL,
OP_RESULT_SUCCESSFUL, last_boot);
attr_list->insert_last(attr_list, attr);
msg->add_attribute(msg, attr);
}
/**
* Add IETF Forwarding Enabled attribute to the send queue
*/
static void add_fwd_enabled(linked_list_t *attr_list)
static void add_fwd_enabled(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
os_fwd_status_t fwd_status;
@@ -171,25 +170,25 @@ static void add_fwd_enabled(linked_list_t *attr_list)
DBG1(DBG_IMC, "IPv4 forwarding status: %N",
os_fwd_status_names, fwd_status);
attr = ietf_attr_fwd_enabled_create(fwd_status);
attr_list->insert_last(attr_list, attr);
msg->add_attribute(msg, attr);
}
/**
* Add IETF Factory Default Password Enabled attribute to the send queue
*/
static void add_default_pwd_enabled(linked_list_t *attr_list)
static void add_default_pwd_enabled(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
DBG1(DBG_IMC, "factory default password: disabled");
attr = ietf_attr_default_pwd_enabled_create(FALSE);
attr_list->insert_last(attr_list, attr);
msg->add_attribute(msg, attr);
}
/**
* Add an IETF Installed Packages attribute to the send queue
*/
static void add_installed_packages(linked_list_t *attr_list)
static void add_installed_packages(imc_msg_t *msg)
{
pa_tnc_attr_t *attr;
ietf_attr_installed_packages_t *attr_cast;
@@ -202,7 +201,7 @@ static void add_installed_packages(linked_list_t *attr_list)
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);
attr_list->insert_last(attr_list, attr);
msg->add_attribute(msg, attr);
}
/**
@@ -211,6 +210,8 @@ static void add_installed_packages(linked_list_t *attr_list)
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_os)
@@ -218,75 +219,48 @@ TNC_Result TNC_IMC_BeginHandshake(TNC_IMCID imc_id,
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imc_os->get_state(imc_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
if (lib->settings->get_bool(lib->settings,
"libimcv.plugins.imc-os.send_info", TRUE))
{
linked_list_t *attr_list;
out_msg = imc_msg_create(imc_os, state, connection_id, imc_id,
TNC_IMVID_ANY, msg_types[0]);
add_product_info(out_msg);
add_string_version(out_msg);
add_op_status(out_msg);
add_fwd_enabled(out_msg);
add_default_pwd_enabled(out_msg);
attr_list = linked_list_create();
add_product_info(attr_list);
add_string_version(attr_list);
add_op_status(attr_list);
add_fwd_enabled(attr_list);
add_default_pwd_enabled(attr_list);
result = imc_os->send_message(imc_os, connection_id, FALSE, 0,
TNC_IMVID_ANY, PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM,
attr_list);
attr_list->destroy(attr_list);
/* 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(TNC_IMCID imc_id,
TNC_ConnectionID connection_id,
TNC_UInt32 msg_flags,
chunk_t msg,
TNC_VendorID msg_vid,
TNC_MessageSubtype msg_subtype,
TNC_UInt32 src_imv_id,
TNC_UInt32 dst_imc_id)
static TNC_Result receive_message(imc_msg_t *in_msg)
{
pa_tnc_msg_t *pa_tnc_msg;
imc_msg_t *out_msg;
enumerator_t *enumerator;
pa_tnc_attr_t *attr;
pen_type_t attr_type;
linked_list_t *attr_list;
imc_state_t *state;
enumerator_t *enumerator;
TNC_Result result;
TNC_UInt32 target_imc_id;
bool fatal_error;
bool fatal_error = FALSE;
if (!imc_os)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
/* get current IMC state */
if (!imc_os->get_state(imc_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
/* parse received PA-TNC message and automatically handle any errors */
result = imc_os->receive_message(imc_os, state, msg, msg_vid,
msg_subtype, src_imv_id, dst_imc_id, &pa_tnc_msg);
/* no parsed PA-TNC attributes available if an error occurred */
if (!pa_tnc_msg)
/* 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;
}
target_imc_id = (dst_imc_id == TNC_IMCID_ANY) ? imc_id : dst_imc_id;
/* preprocess any IETF standard error attributes */
fatal_error = pa_tnc_msg->process_ietf_std_errors(pa_tnc_msg);
out_msg = imc_msg_create_as_reply(in_msg);
/* analyze PA-TNC attributes */
attr_list = linked_list_create();
enumerator = pa_tnc_msg->create_attribute_enumerator(pa_tnc_msg);
enumerator = in_msg->create_attribute_enumerator(in_msg);
while (enumerator->enumerate(enumerator, &attr))
{
attr_type = attr->get_type(attr);
@@ -313,22 +287,22 @@ static TNC_Result receive_message(TNC_IMCID imc_id,
switch (entry->type)
{
case IETF_ATTR_PRODUCT_INFORMATION:
add_product_info(attr_list);
add_product_info(out_msg);
break;
case IETF_ATTR_STRING_VERSION:
add_string_version(attr_list);
add_string_version(out_msg);
break;
case IETF_ATTR_OPERATIONAL_STATUS:
add_op_status(attr_list);
add_op_status(out_msg);
break;
case IETF_ATTR_FORWARDING_ENABLED:
add_fwd_enabled(attr_list);
add_fwd_enabled(out_msg);
break;
case IETF_ATTR_FACTORY_DEFAULT_PWD_ENABLED:
add_default_pwd_enabled(attr_list);
add_default_pwd_enabled(out_msg);
break;
case IETF_ATTR_INSTALLED_PACKAGES:
add_installed_packages(attr_list);
add_installed_packages(out_msg);
break;
default:
break;
@@ -336,35 +310,18 @@ static TNC_Result receive_message(TNC_IMCID imc_id,
}
e->destroy(e);
}
else if (attr_type.type == IETF_ATTR_ASSESSMENT_RESULT)
{
ietf_attr_assess_result_t *attr_cast;
attr_cast = (ietf_attr_assess_result_t*)attr;
state->set_result(state, target_imc_id,
attr_cast->get_result(attr_cast));
}
}
enumerator->destroy(enumerator);
pa_tnc_msg->destroy(pa_tnc_msg);
if (fatal_error)
{
attr_list->destroy_offset(attr_list, offsetof(pa_tnc_attr_t, destroy));
return TNC_RESULT_FATAL;
}
if (attr_list->get_count(attr_list))
{
result = imc_os->send_message(imc_os, connection_id, TRUE, imc_id,
src_imv_id, PEN_IETF, PA_SUBTYPE_IETF_OPERATING_SYSTEM,
attr_list);
result = TNC_RESULT_FATAL;
}
else
{
result = TNC_RESULT_SUCCESS;
result = out_msg->send(out_msg, TRUE);
}
attr_list->destroy(attr_list);
out_msg->destroy(out_msg);
return result;
}
@@ -379,14 +336,25 @@ TNC_Result TNC_IMC_ReceiveMessage(TNC_IMCID imc_id,
TNC_UInt32 msg_len,
TNC_MessageType msg_type)
{
TNC_VendorID msg_vid;
TNC_MessageSubtype msg_subtype;
imc_state_t *state;
imc_msg_t *in_msg;
TNC_Result result;
msg_vid = msg_type >> 8;
msg_subtype = msg_type & TNC_SUBTYPE_ANY;
if (!imc_os)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imc_os->get_state(imc_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imc_msg_create_from_data(imc_os, state, connection_id, msg_type,
chunk_create(msg, msg_len));
result = receive_message(in_msg);
in_msg->destroy(in_msg);
return receive_message(imc_id, connection_id, 0, chunk_create(msg, msg_len),
msg_vid, msg_subtype, 0, TNC_IMCID_ANY);
return result;
}
/**
@@ -402,9 +370,26 @@ TNC_Result TNC_IMC_ReceiveMessageLong(TNC_IMCID imc_id,
TNC_UInt32 src_imv_id,
TNC_UInt32 dst_imc_id)
{
return receive_message(imc_id, connection_id, msg_flags,
chunk_create(msg, msg_len), msg_vid, msg_subtype,
src_imv_id, dst_imc_id);
imc_state_t *state;
imc_msg_t *in_msg;
TNC_Result result;
if (!imc_os)
{
DBG1(DBG_IMC, "IMC \"%s\" has not been initialized", imc_name);
return TNC_RESULT_NOT_INITIALIZED;
}
if (!imc_os->get_state(imc_os, connection_id, &state))
{
return TNC_RESULT_FATAL;
}
in_msg = imc_msg_create_from_long_data(imc_os, 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;
}
/**