/*****************************************************************************/

/*
 *      partpmodules.c  --  pcimodules like utility for parallel port devices
 *	
 *	Written by Adam J. Richter.
 *
 *      Copyright (C) 2000  Yggdrasil Computing, Inc.
 *
 *      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.
 *
 *      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.
 *
 *      You should have received a copy of the GNU General Public License
 *      along with this program; if not, write to the Free Software
 *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 */

/*****************************************************************************/

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <dirent.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <stdarg.h>
#include <sys/param.h>
#include <sys/utsname.h>

#define _GNU_SOURCE
#include <getopt.h>

#include <regex.h>

#define OPT_STRING "c:d:h"
static struct option long_options[] = {
	{"check",	required_argument,	NULL,	'c'},
	{"device",	required_argument,	NULL,	'd'},
	{"help",	no_argument, 		NULL,	'h'},
	{ 0, 		0,			NULL,	0}
};

#define MODDIR	"/lib/modules"
#define PARPTMAP	"modules.parptmap"

#define LINELENGTH	8000 

static void
match_id_string(char *id)
{
	struct utsname utsname;
	char filename[MAXPATHLEN];
	FILE *parptmap_file;
	char line[LINELENGTH];
	unsigned int driver_data;
	char name[LINELENGTH];
	regex_t compiled;
	char regexp_string[200];

	if (uname(&utsname) < 0) {
		perror("uname");
		exit(1);
	}
	sprintf(filename, "%s/%s/%s", MODDIR, utsname.release, PARPTMAP);
	if ((parptmap_file = fopen(filename, "r")) == NULL) {
		perror(filename);
		exit(1);
	}

	while(fgets(line, LINELENGTH, parptmap_file) != NULL) {
		if (line[0] == '#')
			continue;

		if (sscanf(line, "%s %s\n", name, regexp_string) != 2) {
			fprintf (stderr,
				"modules.parptmap unparsable line: %s.\n", line);
			continue;
		}
		regcomp(&compiled, regexp_string, 0);
		if (regexec(&compiled, id, 0, NULL, 0) == 0) {
			printf("%s\n", name);
		}
	}
	fclose(parptmap_file);
}

int
main (int argc, char **argv)
{
	int opt_index = 0;
	int opt;
	char *device = NULL;

	match_id_string(argv[1]);
	return 0;
	while ((opt = getopt_long(argc, argv, OPT_STRING, long_options,
		           &opt_index)) != -1) {
		switch(opt) {
			case 'd':
				device = optarg;
				break;
			case 'h':
				printf ("Usage: usbmodules [--help] [--device //proc/bus/usb/NNN/NNN] [--check module]\n"
	"  Lists kernel modules corresponding to USB devices currently plugged\n"
					"  into the computer.\n");
				return 0;
			default:
				fprintf(stderr,
					"Unknown argument character \"%c\".\n",
					opt);
				return 1;
		}
	}	

	if (device == NULL) {
		fprintf (stderr,
			 "You must specify a device with something like:\n"
			 "\tusbmodules --device /proc/bus/usb/001/009\n");
		return 1;
	}

	/* STUB: do it. */

	return 0;
}