mac2pwd.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.
     *
     *--------------------------------------------------------------------*/

    #define _GETOPT_H

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

    #include <stdio.h>
    #include <ctype.h>
    #include <errno.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/types.h"
    #include "../tools/flags.h"
    #include "../tools/error.h"
    #include "../key/keys.h"

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

    #ifndef MAKEFILE
    #include "../tools/getoptv.c"
    #include "../tools/putoptv.c"
    #include "../tools/version.c"
    #include "../tools/todigit.c"
    #include "../tools/uintspec.c"
    #include "../tools/error.c"
    #endif

    #ifndef MAKEFILE
    #include "../key/MACPasswords.c"
    #include "../key/RNDPasswords.c"
    #include "../key/putpwd.c"
    #endif

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

    #ifndef ETHER_ADDR_LEN
    #define ETHER_ADDR_LEN 6
    #endif

    /*====================================================================*
     *   program functions;
     *--------------------------------------------------------------------*/

    void (* generate)(unsigned, unsigned, unsigned, unsigned, unsigned, char, flag_t) = RNDPasswords;

    /*====================================================================*
     *
     *   void function (const char * file, unsigned alpha, unsigned bunch, flag_t flags)
     *
     *   read Ethernet hardware address strings from a file and print
     *   address passwords pairs on stdout;
     *
     *   parse an Ethernet hardware address string into vendor and device
     *   ID substrings; print a specified number of consecutive addresses
     *   and password strings having a defined letter count and grouping;
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    static void function (const char * file, unsigned alpha, unsigned bunch, unsigned space, flag_t flags)

    {
    	extern void (* generate)(unsigned, unsigned, unsigned, unsigned, unsigned, char, flag_t);
    	unsigned line = 1;
    	unsigned radix = 0x10;
    	unsigned width;
    	unsigned digit;
    	signed c = getc (stdin);
    	while (c != EOF)
    	{
    		uint32_t vendor = 0;
    		uint32_t device = 0;
    		while (isspace (c))
    		{
    			if (c == '\n')
    			{
    				line++;
    			}
    			c = getc (stdin);
    		}
    		if ((c == '#') || (c == ';'))
    		{
    			do
    			{
    				c = getc (stdin);
    			}
    			while ((c != '\n') && (c != EOF));
    			continue;
    		}
    		for (width = 0; width < ETHER_ADDR_LEN; width++)
    		{
    			if ((digit = todigit (c)) < radix)
    			{
    				vendor *= radix;
    				vendor += digit;
    				c = getc (stdin);
    				continue;
    			}
    			error (1, EINVAL, "%s: line %d: Illegal vendor", file, line);
    		}
    		if (!vendor)
    		{
    			error (1, EPERM, "%s: line %d: Vendor can't be zero", file, line);
    		}
    		for (width = 0; width < ETHER_ADDR_LEN; width++)
    		{
    			if ((digit = todigit (c)) < radix)
    			{
    				device *= radix;
    				device += digit;
    				c = getc (stdin);
    				continue;
    			}
    			error (1, EINVAL, "%s: line %d: Illegal device", file, line);
    		}
    		if (!device)
    		{
    			error (1, EPERM, "%s: line %d: Device can't be zero", file, line);
    		}
    		while (isspace (c))
    		{
    			if (c == '\n')
    			{
    				line++;
    			}
    			c = getc (stdin);
    		}
    		generate (vendor, device, 1, alpha, bunch, space, flags);
    	}
    	return;
    }

    /*====================================================================*
     *
     *   int main (int argc, const char * argv []);
     *
     *   read one or more text files containing device address strings
     *   and print a stream of address/password pairs; device addresses
     *   must be separated by white space;
     *
     *   Contributor(s):
     *	Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    #define DEFAULT_ALPHA 25
    #define DEFAULT_BUNCH 0

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

    {
    	extern void (* generate)(unsigned, unsigned, unsigned, unsigned, unsigned, char, flag_t);
    	static const char * optv [] =
    	{
    		"b:el:mqv",
    		PUTOPTV_S_FUNNEL,
    		"Atheros device password generator",
    		"b n\tbunching factor [" LITERAL (DEFAULT_BUNCH) "]",
    		"e\tbase passwords on host system entropy (more secure)",
    		"l n\tpassword letters [" LITERAL (DEFAULT_ALPHA) "]",
    		"m\tbase passwords on MAC addresses (non-secure)",
    		"q\tomit device address on output",
    		"v\tprepend PTS flag on output",
    		(const char *)(0)
    	};
    	unsigned alpha = DEFAULT_ALPHA;
    	unsigned bunch = DEFAULT_BUNCH;
    	unsigned space = '-';
    	flag_t flags = (flag_t)(0);
    	signed c;
    	optind = 1;
    	while ((c = getoptv (argc, argv, optv)) != -1)
    	{
    		switch ((char)(c))
    		{
    		case 'b':
    			bunch = uintspec (optarg, 0, UCHAR_MAX);
    			break;
    		case 'e':
    			generate = RNDPasswords;
    			break;
    		case 'l':
    			alpha = uintspec (optarg, 12, 64);
    			break;
    		case 'm':
    			generate = MACPasswords;
    			break;
    		case 'q':
    			_setbits (flags, PASSWORD_SILENCE);
    			break;
    		case 'v':
    			_setbits (flags, PASSWORD_VERBOSE);
    			break;
    		default:
    			break;
    		}
    	}
    	argc -= optind;
    	argv += optind;
    	if (!argc)
    	{
    		function ("stdin", alpha, bunch, space, flags);
    	}
    	while ((argv) && (* argv))
    	{
    		if (!freopen (* argv, "rb", stdin))
    		{
    			error (1, EINVAL, "Can't open %s", * argv);
    		}
    		function (* argv, alpha, bunch, space, flags);
    		argc--;
    		argv++;
    	}
    	return (0);
    }

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