plcrule.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.
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *
     *   plcrule.c - Qualcomm Atheros Message MakeRules Utility;
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *   system header files;
     *--------------------------------------------------------------------*/

    #include <unistd.h>
    #include <stdlib.h>
    #include <stdint.h>
    #include <limits.h>

    /*====================================================================*
     *   custom header files;
     *--------------------------------------------------------------------*/

    #include "../tools/getoptv.h"
    #include "../tools/putoptv.h"
    #include "../tools/memory.h"
    #include "../tools/number.h"
    #include "../tools/symbol.h"
    #include "../tools/types.h"
    #include "../tools/flags.h"
    #include "../tools/files.h"
    #include "../tools/error.h"
    #include "../plc/plc.h"
    #include "../plc/rules.h"

    /*====================================================================*
     *   custom source files;
     *--------------------------------------------------------------------*/

    #ifndef MAKEFILE
    #include "../tools/getoptv.c"
    #include "../tools/putoptv.c"
    #include "../tools/version.c"
    #include "../tools/basespec.c"
    #include "../tools/hexdump.c"
    #include "../tools/hexencode.c"
    #include "../tools/bytespec.c"
    #include "../tools/ipv4spec.c"
    #include "../tools/ipv6spec.c"
    #include "../tools/uintspec.c"
    #include "../tools/hexdecode.c"
    #include "../tools/hexstring.c"
    #include "../tools/todigit.c"
    #include "../tools/error.c"
    #include "../tools/synonym.c"
    #include "../tools/assist.c"
    #include "../tools/lookup.c"
    #include "../tools/codelist.c"
    #include "../tools/memout.c"
    #include "../tools/reword.c"
    #endif

    #ifndef MAKEFILE
    #include "../plc/Confirm.c"
    #include "../plc/Display.c"
    #include "../plc/Failure.c"
    #include "../plc/ReadMME.c"
    #include "../plc/Request.c"
    #include "../plc/SendMME.c"
    #include "../plc/Devices.c"
    #include "../plc/rules.c"
    #include "../plc/ParseRule.c"
    #include "../plc/PrintRule.c"
    #include "../plc/MakeRule.c"
    #include "../plc/ReadRules.c"
    #endif

    #ifndef MAKEFILE
    #include "../ether/channel.c"
    #include "../ether/openchannel.c"
    #include "../ether/closechannel.c"
    #include "../ether/readpacket.c"
    #include "../ether/sendpacket.c"
    #endif

    #ifndef MAKEFILE
    #include "../mme/MMECode.c"
    #include "../mme/EthernetHeader.c"
    #include "../mme/QualcommHeader.c"
    #include "../mme/UnwantedMessage.c"
    #endif

    /*====================================================================*
     *   program constants;
     *--------------------------------------------------------------------*/

    #define PLCRULE_CSPEC_VERSION 0
    #define PLCRULE_VLAN_TAG 0x00000000
    #define COMMA ","
    #define QUOTE "''"

    /*====================================================================*
     *
     *   int main (int argc, char const * argv[]);
     *
     *--------------------------------------------------------------------*/

    int main (int argc, char const * argv [])

    {
    	extern struct channel channel;
    	static char const * optv [] =
    	{
    		"ei:qrst:T:vV:",
    		"action operand condition [...] control volatility [device] [...]\n\n          where a condition is: field operator value",
    		"Qualcomm Atheros Stream MakeRules Utility",
    		"e\tredirect stderr to stdout",

    #if defined (WINPCAP) || defined (LIBPCAP)

    		"i n\thost interface is (n) [" LITERAL (CHANNEL_ETHNUMBER) "]",

    #else

    		"i s\thost interface is (s) [" LITERAL (CHANNEL_ETHDEVICE) "]",

    #endif

    		"q\tquiet mode",
    		"r\tread rules from device",
    		"s\tdisplay symbol tables",
    		"t n\tread timeout is (n) milliseconds [" LITERAL (CHANNEL_TIMEOUT) "]",
    		"T x\tinserted vlan tag is x [" LITERAL (PLCRULE_VLAN_TAG) "]",
    		"v\tverbose mode",
    		"V n\tcspec version is n [" LITERAL (PLCRULE_CSPEC_VERSION) "]",
    		(char const *) (0)
    	};

    #include "../plc/plc.c"

    	struct cspec cspec;
    	struct MMERule rule;
    	signed c;
    	memset (& rule, 0, sizeof (rule));
    	memset (& cspec, 0, sizeof (cspec));
    	cspec.VLAN_TAG = PLCRULE_VLAN_TAG;
    	cspec.CSPEC_VERSION = PLCRULE_CSPEC_VERSION;
    	if (getenv (PLCDEVICE))
    	{

    #if defined (WINPCAP) || defined (LIBPCAP)

    		channel.ifindex = atoi (getenv (PLCDEVICE));

    #else

    		channel.ifname = strdup (getenv (PLCDEVICE));

    #endif

    	}
    	optind = 1;
    	while (~ (c = getoptv (argc, argv, optv)))
    	{
    		switch (c)
    		{
    		case 'e':
    			dup2 (STDOUT_FILENO, STDERR_FILENO);
    			break;
    		case 'i':

    #if defined (WINPCAP) || defined (LIBPCAP)

    			channel.ifindex = atoi (optarg);

    #else

    			channel.ifname = optarg;

    #endif

    			break;
    		case 'q':
    			_setbits (channel.flags, CHANNEL_SILENCE);
    			_setbits (plc.flags, PLC_SILENCE);
    			break;
    		case 'r':
    			_setbits (plc.flags, PLC_ANALYSE);
    			break;
    		case 's':
    			printf ("\n");
    			printf (" Controls are ");
    			codelist (controls, SIZEOF (controls), COMMA, QUOTE, stdout);
    			printf (".\n");
    			printf (" Volatilities are ");
    			codelist (volatilities, SIZEOF (volatilities), COMMA, QUOTE, stdout);
    			printf (".\n");
    			printf (" Actions are ");
    			codelist (actions, SIZEOF (actions), COMMA, QUOTE, stdout);
    			printf (".\n");
    			printf (" Operands are ");
    			codelist (operands, SIZEOF (operands), COMMA, QUOTE, stdout);
    			printf (".\n");
    			printf (" Fields are ");
    			codelist (fields, SIZEOF (fields), COMMA, QUOTE, stdout);
    			printf (".\n");
    			printf (" Operators are ");
    			codelist (operators, SIZEOF (operators), COMMA, QUOTE, stdout);
    			printf (".\n");
    			printf (" States are ");
    			codelist (states, SIZEOF (states), COMMA, QUOTE, stdout);
    			printf (".\n");
    			printf ("\n");
    			return (0);
    		case 't':
    			channel.timeout = (signed) (uintspec (optarg, 0, UINT_MAX));
    			break;
    		case 'T':
    			cspec.VLAN_TAG = (uint32_t) (basespec (optarg, 16, sizeof (cspec.VLAN_TAG)));
    			cspec.VLAN_TAG = htonl (cspec.VLAN_TAG);
    			break;
    		case 'v':
    			_setbits (channel.flags, CHANNEL_VERBOSE);
    			_setbits (plc.flags, PLC_VERBOSE);
    			break;
    		case 'V':
    			cspec.CSPEC_VERSION = (uint16_t) (basespec (optarg, 10, sizeof (cspec.CSPEC_VERSION)));
    			cspec.CSPEC_VERSION = HTOLE16 (cspec.CSPEC_VERSION);
    			break;
    		default:
    			break;
    		}
    	}
    	argc -= optind;
    	argv += optind;
    	if (_allclr (plc.flags, PLC_ANALYSE))
    	{
    		if (ParseRule (& argc, & argv, & rule, & cspec) == -1)
    		{
    			error (1, 0, "invalid rule");
    		}
    	}
    	openchannel (& channel);
    	if (! (plc.message = malloc (sizeof (* plc.message))))
    	{
    		error (1, errno, PLC_NOMEMORY);
    	}
    	if (! argc)
    	{
    		if (_anyset (plc.flags, PLC_ANALYSE))
    		{
    			ReadRules (& plc);
    		}
    		else
    		{
    			MakeRule (& plc, & rule);
    		}
    	}
    	while ((argc) && (* argv))
    	{
    		if (! hexencode (channel.peer, sizeof (channel.peer), synonym (* argv, devices, SIZEOF (devices))))
    		{
    			error (1, errno, PLC_BAD_MAC, * argv);
    		}
    		if (_anyset (plc.flags, PLC_ANALYSE))
    		{
    			ReadRules (& plc);
    		}
    		else
    		{
    			MakeRule (& plc, & rule);
    		}
    		argc--;
    		argv++;
    	}
    	free (plc.message);
    	closechannel (& channel);
    	exit (0);
    }

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