PrintRule.c
Author: cmaier@cmassoc.net

    /*====================================================================*
     *
     *   Copyright (c) 2013 Qualcomm Atheros, Inc.
     *
     *   All rights reserved.
     *
     *   Redistribution and use in source and binary forms, with or
     *   without modification, are permitted (subject to the limitations
     *   in the disclaimer below) provided that the following conditions
     *   are met:
     *
     *   * Redistributions of source code must retain the above copyright
     *     notice, this list of conditions and the following disclaimer.
     *
     *   * Redistributions in binary form must reproduce the above
     *     copyright notice, this list of conditions and the following
     *     disclaimer in the documentation and/or other materials
     *     provided with the distribution.
     *
     *   * Neither the name of Qualcomm Atheros nor the names of
     *     its contributors may be used to endorse or promote products
     *     derived from this software without specific prior written
     *     permission.
     *
     *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
     *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
     *   COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
     *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
     *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     *   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     *   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *
     *   signed PrintRule (uint32_t CR_PID, uint32_t CR_OPERAND, uint8_t CR_VALUE []);
     *
     *   rules.h
     *
     *   print one classifier rule on stdout;
     *
     *   some classifier rule structures have an 8-bit PID and OPERAND
     *   while others have a 32-bit PID and OPERAND; this function is
     *   the common demominator;
     *
     *   Contributor(s):
     *      Nathaniel Houghton <nhoughto@qca.qualcomm.com>
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    #ifndef PRINTRULE_SOURCE
    #define PRINTRULE_SOURCE

    #include <string.h>

    #include "../plc/rules.h"
    #include "../tools/error.h"

    signed PrintRule (uint32_t CR_PID, uint32_t CR_OPERAND, uint8_t CR_VALUE [])

    {
    	char buffer [CLASSIFIER_STRING];
    	uint32_t val32;
    	uint16_t val16;
    	uint8_t val8;
    	const char * p1;
    	const char * p2;
    	p1 = reword (CR_PID, fields, SIZEOF (fields));
    	if (p1 == NULL)
    	{
    		error (1, 0, "invalid classifier PID");
    	}
    	p2 = reword (CR_OPERAND, operators, SIZEOF (operators));
    	if (p2 == NULL)
    	{
    		error (1, 0, "invalid classifier operand");
    	}
    	printf ("%s %s", p1, p2);
    	switch (CR_PID)
    	{
    	case FIELD_ETH_SA:
    	case FIELD_ETH_DA:
    		printf (" %s", hexstring (buffer, sizeof (buffer), CR_VALUE, ETHER_ADDR_LEN));
    		break;
    	case FIELD_IPV4_SA:
    	case FIELD_IPV4_DA:
    		putchar (' ');
    		memout (CR_VALUE, IPv4_LEN, "%d", 1, '.', 0, stdout);
    		break;
    	case FIELD_IPV6_SA:
    	case FIELD_IPV6_DA:
    		putchar (' ');
    		memout (CR_VALUE, IPv6_LEN, "%02x", 2, ':', 0, stdout);
    		break;
    	case FIELD_VLAN_UP:
    	case FIELD_IPV6_TC:
    	case FIELD_IPV4_TOS:
    	case FIELD_IPV4_PROT:
    		memcpy (& val8, CR_VALUE, sizeof (val8));
    		printf (" 0x%02X", val8);
    		break;
    	case FIELD_VLAN_ID:
    	case FIELD_TCP_SP:
    	case FIELD_TCP_DP:
    	case FIELD_UDP_SP:
    	case FIELD_UDP_DP:
    	case FIELD_IP_SP:
    	case FIELD_IP_DP:
    		memcpy (& val16, CR_VALUE, sizeof (val16));
    		val16 = ntohs (val16);
    		printf (" %d", val16);
    		break;
    	case FIELD_ETH_TYPE:
    		memcpy (& val16, CR_VALUE, sizeof (val16));
    		val16 = ntohs (val16);
    		printf (" 0x%04X", val16);
    		break;
    	case FIELD_IPV6_FL:
    		memcpy (& val32, & CR_VALUE [0], sizeof (val32));
    		val32 = ntohl (val32);
    		printf (" 0x%08X", val32);
    		break;
    	case FIELD_HPAV_MME:
    		memcpy (& val8, & CR_VALUE [0], sizeof (val8));
    		memcpy (& val16, & CR_VALUE [1], sizeof (val16));
    		printf (" %02x:%04x", val8, val16);
    		break;
    	case FIELD_TCP_ACK:
    		{
    			code_t val;
    			const char * p;
    			memcpy (& val, CR_VALUE, sizeof (val));
    			p = reword (val, states, SIZEOF (states));
    			if (p == NULL)
    			{
    				error (1, 0, "invalid TCP ACK flag");
    			}
    			printf (" %s", p);
    		}
    		break;
    	case FIELD_VLAN_TAG:
    		{
    			code_t val;
    			const char * p;
    			memcpy (& val, CR_VALUE, sizeof (val));
    			p = reword (val, states, SIZEOF (states));
    			if (p == NULL)
    			{
    				error (1, 0, "invalid VLAN tag flag");
    			}
    			printf (" %s", p);
    		}
    		break;
    	default:
    		printf (" *****UNSUPPORTED CODE*****");
    		break;
    	}
    	return (0);
    }

    #endif

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