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/*
* Copyright (C) 2006 Mike McCauley (mikem@open.com.au)
* Copyright (C) 2010 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 "tnccs_msg.h"
#include "imc_imv_msg.h"
#include "tnccs_error_msg.h"
#include "tnccs_preferred_language_msg.h"
#include "tnccs_reason_strings_msg.h"
#include "tnccs_recommendation_msg.h"
#include "tnccs_tncs_contact_info_msg.h"
#include <library.h>
#include <utils/debug.h>
ENUM(tnccs_msg_type_names, IMC_IMV_MSG, TNCCS_MSG_ROOF,
"IMC-IMV",
"TNCCS-Recommendation",
"TNCCS-Error",
"TNCCS-PreferredLanguage",
"TNCCS-ReasonStrings",
"TNCCS-TNCSContactInfo"
);
/**
* See header
*/
tnccs_msg_t* tnccs_msg_create_from_node(xmlNodePtr node, linked_list_t *errors)
{
char *error_msg, buf[BUF_LEN];
tnccs_error_type_t error_type = TNCCS_ERROR_MALFORMED_BATCH;
tnccs_msg_t *msg;
tnccs_msg_type_t type = IMC_IMV_MSG;
if (streq((char*)node->name, "IMC-IMV-Message"))
{
DBG2(DBG_TNC, "processing %N message", tnccs_msg_type_names, type);
return imc_imv_msg_create_from_node(node, errors);
}
else if (streq((char*)node->name, "TNCC-TNCS-Message"))
{
bool found = FALSE;
xmlNsPtr ns = node->ns;
xmlNodePtr cur = node->xmlChildrenNode;
xmlNodePtr xml_msg_node = NULL;
while (cur)
{
if (streq(cur->name, "Type") && cur->ns == ns)
{
xmlChar *content = xmlNodeGetContent(cur);
type = strtol(content, NULL, 16);
xmlFree(content);
found = TRUE;
}
else if (streq(cur->name, "XML") && cur->ns == ns)
{
xml_msg_node = cur->xmlChildrenNode;
}
cur = cur->next;
}
if (!found)
{
error_msg = "Type is missing in TNCC-TNCS-Message";
goto fatal;
}
if (!xml_msg_node)
{
error_msg = "XML node is missing in TNCC-TNCS-Message";
goto fatal;
}
cur = xml_msg_node;
/* skip empty and blank nodes */
while (cur && xmlIsBlankNode(cur))
{
cur = cur->next;
}
if (!cur)
{
error_msg = "XML node is empty";
goto fatal;
}
/* check if TNCCS message type and node name agree */
if (type >= TNCCS_MSG_RECOMMENDATION && type <= TNCCS_MSG_ROOF)
{
DBG2(DBG_TNC, "processing %N message", tnccs_msg_type_names, type);
if (cur->ns != ns)
{
error_msg = "node is not in the TNCCS message namespace";
goto fatal;
}
if (type != enum_from_name(tnccs_msg_type_names, (char*)cur->name))
{
error_msg = buf;
snprintf(buf, BUF_LEN, "expected '%N' node but was '%s'",
tnccs_msg_type_names, type, (char*)cur->name);
goto fatal;
}
}
switch (type)
{
case TNCCS_MSG_RECOMMENDATION:
return tnccs_recommendation_msg_create_from_node(cur, errors);
case TNCCS_MSG_ERROR:
return tnccs_error_msg_create_from_node(cur);
case TNCCS_MSG_PREFERRED_LANGUAGE:
return tnccs_preferred_language_msg_create_from_node(cur, errors);
case TNCCS_MSG_REASON_STRINGS:
return tnccs_reason_strings_msg_create_from_node(cur, errors);
case TNCCS_MSG_TNCS_CONTACT_INFO:
return tnccs_tncs_contact_info_msg_create_from_node(cur, errors);
default:
DBG1(DBG_TNC, "ignoring TNCC-TNCS-Message with type %d", type);
return NULL;
}
}
DBG1(DBG_TNC, "ignoring unknown message node '%s'", (char*)node->name);
return NULL;
fatal:
msg = tnccs_error_msg_create(error_type, error_msg);
errors->insert_last(errors, msg);
return NULL;
}
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