/***************************************************************************
    smb4k_mount  -  This is the mount utility for Smb4K.
                             -------------------
    begin                : Di Sep 21 2004
    copyright            : (C) 2004-2007 by Alexander Reinholdt
    email                : dustpuppy@users.berlios.de
 ***************************************************************************/

/***************************************************************************
 *   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., 51 Franklin Street, Fifth Floor, Boston,   *
 *   MA  02110-1301 USA                                                    *
 ***************************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <locale.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <iostream>
using namespace std;

#define SMB4K_MOUNT_VERSION "0.10"

void info()
{
	cout << "This is smb4k_mount (version " << SMB4K_MOUNT_VERSION << "), the mount utility of Smb4K" << endl;
	cout << "Copyright (C) 2004-2007, Alexander Reinholdt" << endl;
	cout << endl;
	cout << "Usage:" << endl;
#ifndef __FreeBSD__
	cout << "  smb4k_mount {mode} {options} {share} {mountpoint}" << endl;
#else
	cout << "  smb4k_mount {options} {share} {mountpoint}" << endl;
#endif
	cout << "  smb4k_mount --help" << endl;
	cout << "  smb4k_mount --version" << endl;
	cout << endl;
	cout << "Arguments:" << endl;
#ifndef __FreeBSD__
	cout << "  {mode}" << endl;
	cout << "    --no-suid\tsmb4k_mount is run in normal user mode, so smbmount or" << endl;
	cout << "\t\tmount.cifs is invoked." << endl;
	cout << "    --suid\tsmb4k_mount is run in super user mode, so mount is invoked." << endl;
	cout << "    -n\t\tThe same as the '--no-suid' argument." << endl;
	cout << "    -s\t\tThe same as the '--suid' argument." << endl;
	cout << endl;
	cout << "  {options}" << endl;
	cout << "    -t <fs>\tThe file system that should be used for mounting. Only 'smbfs'" << endl;
	cout << "\t\tand 'cifs' are supported. All other file systems will result in" << endl;
	cout << "\t\tan error. Note, that this argument is mandatory." << endl;
	cout << "    -o <list>\tWith this argument you define the options that should be passed" << endl;
	cout << "\t\tto the actual mount binary in a comma-separated list. See the" << endl;
	cout << "\t\tmanual page of smbmount, mount.cifs, and mount for more"<< endl;
	cout << "\t\tinformation." << endl;
#else
	cout << "  {options}\tAll options that can be passed to mount_smbfs. Please refer to" << endl;
	cout << "\t\tthe manual page of mount_smbfs to learn more." << endl;
#endif
	cout << endl;
	cout << "  {share}\tThe SMB share that should be mounted." << endl;
	cout << endl;
	cout << "  {mountpoint}\tThe path where the share should be mounted to." << endl;
	cout << endl;
	cout << "  --help\tDisplay this help sceen and exit." << endl;
	cout << "  --version\tDisplay the version information and exit." << endl;
	cout << endl;
}


void version()
{
	cout << "Version " << SMB4K_MOUNT_VERSION << endl;
}


bool find_program( const char *name, char *path )
{
	const char *paths[] = { "/bin/", "/sbin/", "/usr/bin/", "/usr/sbin/", "/usr/local/bin/", "/usr/local/sbin/" };
	string file = "";

	for ( uint i = 0; i < sizeof( paths ) / sizeof( char * ); i++ )
	{
		string p( paths[i] );
		p.append( name );

		if ( access( p.c_str(), X_OK ) == 0 )
		{
			file.assign( p );
			break;
		}
	}

	if ( !strcmp( file.c_str(), "" ) )
	{
		cerr << "smb4k_mount: Could not find " << name << " binary" << endl;

		return false;
	}

	int len = strlen( file.c_str() ) + 1;

	(void) strncpy( path, file.c_str(), len );
	path[len-1] = '\0';

	return true;
}


int main( int argc, char *argv[], char *envp[] )
{
	// First of all, set the locale:
	(void) setlocale( LC_ALL, "" );

	if ( argc < 2 )
	{
		info();
		exit( EXIT_FAILURE );
	}

	int new_argc = argc + 1;
	char *new_argv[new_argc];
	int index = 0;
	char path[255];
	path[0] = '\0';
	bool have_share = false;
#ifndef __FreeBSD__
	bool normal_user_mode = true;
	bool have_user_mode = false;
	char *mount_options = NULL;
	char *filesystem = NULL;
#else
	char *charset = NULL;
	char *host = NULL;
	char *locale = NULL;
	char *access_rights = NULL;
	char *owner_attributes = NULL;
	char *retries = NULL;
	char *timeout = NULL;
	char *workgroup = NULL;
	char *case_opt = NULL;
	char *dir_mode = NULL;
	char *file_mode = NULL;
	char *gid = NULL;
	char *uid = NULL;
	char *options = NULL;
	bool no_password = false;
#endif

	// Get the options that were passed:
	int c;

	while ( 1 )
	{
		int option_index = 0;

		// FIXME: Under FreeBSD we do not need to determine
		// if smb4k_mount is run in super user mode or not,
		// because we do only have mount_smbfs available. So,
		// in future versions of smb4k_mount, we should remove
		// the '--suid' and '--no-suid' argument under FreeBSD.
		static struct option long_options[] =
		{
			{ "suid", 0, 0, 0 },
			{ "no-suid", 0, 0, 0 },
			{ "help", 0, 0, 0 },
			{ "version", 0, 0, 0 },
			{ 0, 0, 0, 0 }
		};

#ifndef __FreeBSD__
		c = getopt_long( argc, argv, "o:t:ns", long_options, &option_index );
#else
		c = getopt_long( argc, argv, "E:I:L:M:NO:R:T:W:c:d:f:g:n:u:", long_options, &option_index );
#endif

		if ( c == -1 )
		{
			break;
		}

		switch ( c )
		{
			case 0:
			{
				// Get the length of the option string, create a
				// new string and copy the option into it:
				int len = strlen( long_options[option_index].name ) + 1;
				char opt[len];
				opt[0] = '\0';
				(void) strncpy( opt, long_options[option_index].name, len );
				opt[len-1] = '\0';

				// Now check which option has been provided:
				if ( !strncmp( opt, "help", len ) )
				{
					info();

					// That's it. Exit here.
					exit( EXIT_SUCCESS );
				}
				else if ( !strncmp( opt, "version", len ) )
				{
					version();

					// That's it. Exit here.
					exit( EXIT_SUCCESS );
				}
#ifndef __FreeBSD__
				else if ( !strncmp( opt, "suid", len ) )
				{
					// Enter super user mode.

					normal_user_mode = false;
					have_user_mode = true;

					break;
				}
				else if ( !strncmp( opt, "no-suid", len ) )
				{
					// Entering normal user mode.

					normal_user_mode = true;
					have_user_mode = true;

					break;
				}
#endif
				else
				{
					break;
				}

				break;
			}
#ifndef __FreeBSD__
			case 't':
			{
				// Get the length of the option argument:
				int len = strlen( optarg ) + 1;

				if ( strncmp( "smbfs", optarg, len ) != 0 &&
				     strncmp( "cifs", optarg, len ) != 0 )
				{
					cerr << "smb4k_mount: File system " << optarg << " is not supported" << endl;
					exit( EXIT_FAILURE );
				}

				if ( !filesystem )
				{
					filesystem = new char[len];
					filesystem[0] = '\0';
					(void) strncpy( filesystem, optarg, len );
					filesystem[len-1] = '\0';
				}

				break;
			}
			case 'o':
			{
				int len = strlen( optarg ) + 1;

				if ( !mount_options )
				{
					mount_options = new char[len];
					mount_options[0] = '\0';
					(void) strncpy( mount_options, optarg, len );
					mount_options[len-1] = '\0';
				}

				break;
			}
			case 's':
			{
				// Enter super user mode.

				normal_user_mode = false;
				have_user_mode = true;

				break;
			}
			case 'n':
			{
				// Enter normal user mode.

				normal_user_mode = true;
				have_user_mode = true;

				break;
			}
#else
			case 'E':
			{
				if ( !charset )
				{
					int len = strlen( optarg ) + 1;
					charset = new char[len];
					charset[0] = '\0';
					(void) strncpy( charset, optarg, len );
					charset[len-1] = '\0';
				}

				break;
			}
			case 'I':
			{
				if ( !host )
				{
					int len = strlen( optarg ) + 1;
					host = new char[len];
					host[0] = '\0';
					(void) strncpy( host, optarg, len );
					host[len-1] = '\0';
				}

				break;
			}
			case 'L':
			{
				if ( !locale )
				{
					int len = strlen( optarg ) + 1;
					locale = new char[len];
					locale[0] = '\0';
					(void) strncpy( locale, optarg, len );
					locale[len-1] = '\0';
				}

				break;
			}
			case 'M':
			{
				if ( !access_rights )
				{
					int len = strlen( optarg ) + 1;
					access_rights = new char[len];
					access_rights[0] = '\0';
					(void) strncpy( access_rights, optarg, len );
					access_rights[len-1] = '\0';
				}

				break;
			}
			case 'N':
			{
				no_password = true;

				break;
			}
			case 'O':
			{
				if ( !owner_attributes )
				{
					int len = strlen( optarg ) + 1;
					owner_attributes = new char[len];
					owner_attributes[0] = '\0';
					(void) strncpy( owner_attributes, optarg, len );
					owner_attributes[len-1] = '\0';
				}

				break;
			}
			case 'R':
			{
				if ( !retries )
				{
					int len = strlen( optarg ) + 1;
					retries = new char[len];
					retries[0] = '\0';
					(void) strncpy( retries, optarg, len );
					retries[len-1] = '\0';
				}

				break;
			}
			case 'T':
			{
				if ( !timeout )
				{
					int len = strlen( optarg ) + 1;
					timeout = new char[len];
					timeout[0] = '\0';
					(void) strncpy( timeout, optarg, len );
					timeout[len-1] = '\0';
				}

				break;
			}
			case 'W':
			{
				if ( !workgroup )
				{
					int len = strlen( optarg ) + 1;
					workgroup = new char[len];
					workgroup[0] = '\0';
					(void) strncpy( workgroup, optarg, len );
					workgroup[len-1] = '\0';
				}

				break;
			}
			case 'c':
			{
				if ( !case_opt )
				{
					int len = strlen( optarg ) + 1;
					case_opt = new char[len];
					case_opt[0] = '\0';
					(void) strncpy( case_opt, optarg, len );
					case_opt[len-1] = '\0';
				}

				break;
			}
			case 'd':
			{
				if ( !dir_mode )
				{
					int len = strlen( optarg ) + 1;
					dir_mode = new char[len];
					dir_mode[0] = '\0';
					(void) strncpy( dir_mode, optarg, len );
					dir_mode[len-1] = '\0';
				}

				break;
			}
			case 'f':
			{
				if ( !file_mode )
				{
					int len = strlen( optarg ) + 1;
					file_mode = new char[len];
					file_mode[0] = '\0';
					(void) strncpy( file_mode, optarg, len );
					file_mode[len-1] = '\0';
				}

				break;
			}
			case 'g':
			{
				if ( !gid )
				{
					int len = strlen( optarg ) + 1;
					gid = new char[len];
					gid[0] = '\0';
					(void) strncpy( gid, optarg, len );
					gid[len-1] = '\0';
				}

				break;
			}
			case 'n':
			{
				if ( options )
				{
					int len = strlen( optarg ) + 1;
					options = new char[len];
					options[0] = '\0';
					(void) strncpy( options, optarg, len );
					options[len-1] = '\0';
				}

				break;
			}
			case 'u':
			{
				if ( !uid )
				{
					int len = strlen( optarg ) + 1;
					uid = new char[len];
					uid[0] = '\0';
					(void) strncpy( uid, optarg, len );
					uid[len-1] = '\0';
				}

				break;
			}
#endif
			case '?':
			{
				// Abort the program if an unknown option 
				// is encountered:
				exit( EXIT_FAILURE );
			}
			default:
			{
				break;
			}
		}
	}

#ifndef __FreeBSD__
	// Error out if no user mode was specified.
	if ( !have_user_mode )
	{
		cerr << "smb4k_mount: No mode was specified" << endl;
		exit( EXIT_FAILURE );
	}

	// Error out if the user did not specify any file system.
	if ( !filesystem )
	{
		cerr << "smb4k_mount: No file system was specified" << endl;
		exit( EXIT_FAILURE );
	}

	if ( normal_user_mode )
	{
		int len = strlen( filesystem ) + 1;

		if ( !strncmp( "smbfs", filesystem, len ) )
		{
			if ( !find_program( "smbmount", path ) )
			{
				exit( EXIT_FAILURE );
			}
		}
		else
		{
			if( !find_program( "mount.cifs", path ) )
			{
				exit( EXIT_FAILURE );
			}
		}

		len = strlen( path ) + 1;

		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], path, len );
		new_argv[index][len-1] = '\0';

		index++;

		// Add the service name and the mount point.
		if ( optind < argc )
		{
			while ( optind < argc )
			{
				// Check for the share:
				if ( (argv[optind][0] == '\057' && argv[optind][1] == '\057') /* slash */ ||
				     (argv[optind][0] == '\134' && argv[optind][1] == '\134') /* back slash */ )
				{
					have_share = true;
				}

				len = strlen( argv[optind] ) + 1;

				new_argv[index] = new char[len];
				new_argv[index][0] = '\0';
				(void) strncpy( new_argv[index], argv[optind], len );
				new_argv[index][len-1] = '\0';

				optind++;
				index++;
			}
		}

		// Pass the arguments that were provided with the -o
		// option.
		// NOTE: smbmount and mount.cifs want the -o argument to be
		// the last one in the command string. So, do not change the
		// order.
		if ( mount_options )
		{
			len = strlen( "-o" ) + 1;

			new_argv[index] = new char[len];
			new_argv[index][0] = '\0';
			(void) strncpy( new_argv[index], "-o", len );
			new_argv[index][len-1] = '\0';

			index++;

			len = strlen( mount_options ) + 1;
			new_argv[index] = new char[len];
			new_argv[index][0] = '\0';
			(void) strncpy( new_argv[index], mount_options, len );
			new_argv[index][len-1] = '\0';

			index++;
		}
	}
	else
	{
		if ( !find_program( "mount", path ) )
		{
			exit( EXIT_FAILURE );
		}

		int len = strlen( path ) + 1;

		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], path, len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( "-t" ) + 1;

		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-t", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( filesystem ) + 1;

		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], filesystem, len );
		new_argv[index][len-1] = '\0';

		index++;

        	// Pass the arguments that were provided with the -o
		// option.
		// NOTE: mount wants the -o argument to be in front of
		// the service name and mount point. So, do not change the
		// order.
		if ( mount_options )
		{
			len = strlen( "-o" ) + 1;

			new_argv[index] = new char[len];
			new_argv[index][0] = '\0';
			(void) strncpy( new_argv[index], "-o", len );
			new_argv[index][len-1] = '\0';

			index++;

			len = strlen( mount_options ) + 1;

			new_argv[index] = new char[len];
			new_argv[index][0] = '\0';
			(void) strncpy( new_argv[index], mount_options, len );
			new_argv[index][len-1] = '\0';

			index++;
		}

		// Add the service name and the mount point.
		if ( optind < argc )
		{
			while ( optind < argc )
			{
				// Check for the share:
				if ( (argv[optind][0] == '\057' && argv[optind][1] == '\057') /* slash */ ||
			             (argv[optind][0] == '\134' && argv[optind][1] == '\134') /* back slash */ )
				{
					have_share = true;
				}

				len = strlen( argv[optind] ) + 1;

				new_argv[index] = new char[len];
				new_argv[index][0] = '\0';
				(void) strncpy( new_argv[index], argv[optind], len );
				new_argv[index][len-1] = '\0';

				optind++;
				index++;
			}
		}
	}
#else
	// We do not need to probe for the user mode, because we
        // only have mount_smbfs available. Also, we do not have
	// to check the file system. There is only one possible...
	if ( !find_program( "mount_smbfs", path ) )
	{
		exit( EXIT_FAILURE );
	}

	int len = strlen( path ) + 1;

	new_argv[index] = new char[len];
	new_argv[index][0] = '\0';
	(void) strncpy( new_argv[index], path, len );
	new_argv[index][len-1] = '\0';

	index++;

	// Add the arguments:
	if ( charset )
	{
		len = strlen( "-E" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-E", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( charset ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], charset, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( host )
	{
		len = strlen( "-I" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-I", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( host ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], host, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( locale )
	{
		len = strlen( "-L" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-L", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( locale ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], locale, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( access_rights )
	{
		len = strlen( "-M" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index],"-M" , len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( access_rights ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], access_rights, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( no_password )
	{
		len = strlen( "-N" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-N", len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( owner_attributes )
	{
		len = strlen( "-O" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-O", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( owner_attributes ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], owner_attributes, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( retries )
	{
		len = strlen( "-R" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-R", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( retries ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], retries, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( timeout )
	{
		len = strlen( "-I" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index],"-I" , len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( timeout ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], timeout, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( workgroup )
	{
		len = strlen( "-W" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-W", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( workgroup ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], workgroup, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( case_opt )
	{
		len = strlen( "-c" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-c", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( case_opt ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], case_opt, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( dir_mode )
	{
		len = strlen( "-d" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-d", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( dir_mode ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], dir_mode, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( file_mode )
	{
		len = strlen( "-f" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-f", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( file_mode ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], file_mode, len );
		new_argv[index][len-1] = '\0';

		index++;

	}

	if ( gid )
	{
		len = strlen( "-g" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-g", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( gid ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], gid, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( uid )
	{
		len = strlen( "-u" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-u", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( uid ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], uid, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	if ( options )
	{
		len = strlen( "-n" ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], "-n", len );
		new_argv[index][len-1] = '\0';

		index++;

		len = strlen( options ) + 1;
		new_argv[index] = new char[len];
		new_argv[index][0] = '\0';
		(void) strncpy( new_argv[index], options, len );
		new_argv[index][len-1] = '\0';

		index++;
	}

	// Add the service name and the mount point.
	if ( optind < argc )
	{
		while ( optind < argc )
		{
			// Check for the share:
			if ( (argv[optind][0] == '\057' && argv[optind][1] == '\057') /* slash */ ||
			     (argv[optind][0] == '\134' && argv[optind][1] == '\134') /* back slash */ )
			{
				have_share = true;
			}

			len = strlen( argv[optind] ) + 1;

			new_argv[index] = new char[len];
			new_argv[index][0] = '\0';
			(void) strncpy( new_argv[index], argv[optind], len );
			new_argv[index][len-1] = '\0';

			optind++;
			index++;
		}
	}
#endif

	if ( !have_share )
	{
		cerr << "smb4k_mount: No share was specified" << endl;
		exit( EXIT_FAILURE );
	}

	if ( index >= new_argc )
	{
		cerr << "smb4k_mount: There are too many arguments" << endl;
		exit( EXIT_SUCCESS );
	}

	// Terminate new_argv:
	new_argv[index] = NULL;

	// Execute command:
	if ( execve( new_argv[0], new_argv, envp ) == -1 )
	{
		int err = errno;
		cerr << "smb4k_mount: " << strerror( err ) << endl;

		exit( EXIT_FAILURE );
	}

	return EXIT_SUCCESS;
}