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389 lines
8.9 KiB
389 lines
8.9 KiB
/***************************************************************************
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smb4k_mv - This is the move utility of Smb4K
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-------------------
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begin : Sa Nov 19 2005
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copyright : (C) 2005-2007 by Alexander Reinholdt
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email : dustpuppy@users.berlios.de
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***************************************************************************/
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/***************************************************************************
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, *
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* MA 02110-1301 USA *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <locale.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <string.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <iostream>
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using namespace std;
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#define SMB4K_MV_VERSION "0.4"
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void info()
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{
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cout << "This is smb4k_mv (version " << SMB4K_MV_VERSION << "), the move utility of Smb4K" << endl;
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cout << "Copyright (C) 2005-2007, Alexander Reinholdt" << endl;
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cout << endl;
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cout << "Usage:" << endl;
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cout << " smb4k_mv {user}:{group} {perms} {src} {dest}" << endl;
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cout << " smb4k_mv --help" << endl;
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cout << " smb4k_mv --version" << endl;
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cout << endl;
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cout << "Arguments:" << endl;
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cout << " {user}\tThe (new) owner of the file" << endl;
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cout << endl;
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cout << " {group}\tThe (new) group of the file" << endl;
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cout << endl;
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cout << " {perms}\tThe new permissions of the file" << endl;
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cout << endl;
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cout << " {src}\t\tThe (full) path of the source file" << endl;
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cout << endl;
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cout << " {dest}\tThe destination where the file will be moved to" << endl;
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cout << endl;
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cout << " --help\tDisplay this help screen and exit." << endl;
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cout << " --version\tDisplay the version information and exit." << endl;
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cout << endl;
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}
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void version()
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{
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cout << "Version: " << SMB4K_MV_VERSION << endl;
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}
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bool find_program( const char *name, char *path )
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{
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const char *paths[] = { "/bin/", "/sbin/", "/usr/bin/", "/usr/sbin/", "/usr/local/bin/", "/usr/local/sbin/" };
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string file = "";
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for ( uint i = 0; i < sizeof( paths ) / sizeof( char * ); i++ )
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{
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string p( paths[i] );
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p.append( name );
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if ( access( p.c_str(), X_OK ) == 0 )
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{
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file.assign( p );
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break;
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}
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}
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if ( !strcmp( file.c_str(), "" ) )
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{
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cerr << "smb4k_mv: Could not tqfind " << name << " binary" << endl;
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return false;
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}
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int len = strlen( file.c_str() ) + 1;
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(void) strncpy( path, file.c_str(), len );
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path[len-1] = '\0';
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return true;
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}
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int main( int argc, char *argv[], char *envp[] )
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{
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(void) setlocale( LC_ALL, "" );
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if ( argc < 2 )
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{
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info();
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exit( EXIT_FAILURE );
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}
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char *user_group = NULL;
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char *permissions = NULL;
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char *source = NULL;
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char *destination = NULL;
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int c;
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while ( 1 )
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{
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int option_index = 0;
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static struct option long_options[] =
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{
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{ "help", 0, 0, 0 },
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{ "version", 0, 0, 0 },
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{ 0, 0, 0, 0 }
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};
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c = getopt_long( argc, argv, "", long_options, &option_index );
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if ( c == -1 )
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{
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break;
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}
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switch ( c )
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{
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case 0:
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{
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// Get the length of the option string, create a
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// new string and copy the option into it:
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int len = strlen( long_options[option_index].name ) + 1;
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char opt[len];
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opt[0] = '\0';
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(void) strncpy( opt, long_options[option_index].name, len );
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opt[len-1] = '\0';
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// Now check which option has been provided:
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if ( !strncmp( opt, "help", len ) )
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{
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info();
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// That's it. Exit here.
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exit( EXIT_SUCCESS );
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}
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else if ( !strncmp( opt, "version", len ) )
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{
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version();
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// That's it. Exit here.
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exit( EXIT_SUCCESS );
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}
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else
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{
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break;
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}
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break;
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}
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case '?':
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{
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// Abort the program if an unknown option
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// is encountered:
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exit( EXIT_FAILURE );
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}
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default:
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{
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break;
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}
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}
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}
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if ( optind < argc )
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{
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while ( optind < argc )
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{
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if ( optind == 1 )
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{
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if ( strchr( argv[optind], ':' ) )
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{
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int len = strlen( argv[optind] ) + 1;
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user_group = new char[len];
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user_group[0] = '\0';
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(void) strncpy( user_group, argv[optind], len );
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user_group[len-1] = '\0';
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}
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else
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{
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cerr << "smb4k_mv: First argument must contain a colon" << endl;
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exit( EXIT_FAILURE );
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}
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}
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else if ( optind == 2 )
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{
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int i = 0;
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while ( argv[optind][i] )
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{
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if ( !isdigit( argv[optind][i] ) )
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{
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cerr << "smb4k_mv: Second argument must only contain digits" << endl;
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exit( EXIT_FAILURE );
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}
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i++;
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}
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int len = strlen( argv[optind] ) + 1;
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permissions = new char[len];
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permissions[0] = '\0';
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(void) strncpy( permissions, argv[optind], len );
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permissions[len-1] = '\0';
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}
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else if ( optind == 3 )
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{
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// We only want regular files to be moved:
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struct stat file_stat;
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if ( lstat( argv[optind], &file_stat ) == -1 )
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{
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int err = errno;
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cerr << "smb4k_mv: " << strerror( err ) << endl;
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exit( EXIT_FAILURE );
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}
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if ( !S_ISREG( file_stat.st_mode ) ||
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S_ISFIFO( file_stat.st_mode ) ||
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S_ISLNK( file_stat.st_mode ) )
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{
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cerr << "smb4k_mv: '" << argv[optind] << "' is not a regular file" << endl;
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exit( EXIT_FAILURE );
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}
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int len = strlen( argv[optind] ) + 1;
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source = new char[len];
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source[0] = '\0';
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(void) strncpy( source, argv[optind], len );
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source[len-1] = '\0';
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}
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else if ( optind == 4 )
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{
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// Be sure that the destination either does not
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// exist or that it is a regular file:
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struct stat file_stat;
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bool file_exists = true;
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if ( lstat( argv[optind], &file_stat ) == -1 )
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{
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int err = errno;
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// If the file does not exist, that's very good
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// for our purposes. Do not error out in that case.
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if ( err != ENOENT )
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{
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cerr << "smb4k_mv: " << strerror( err ) << endl;
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exit( EXIT_FAILURE );
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}
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else
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{
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file_exists = false;
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}
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}
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if ( file_exists )
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{
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if ( !S_ISREG( file_stat.st_mode ) ||
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S_ISFIFO( file_stat.st_mode ) ||
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S_ISLNK( file_stat.st_mode ) )
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{
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cerr << "smb4k_mv: '" << argv[optind] << "' is not a regular file" << endl;
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exit( EXIT_FAILURE );
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}
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}
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int len = strlen( argv[optind] ) + 1;
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destination = new char[len];
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destination[0] = '\0';
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(void) strncpy( destination, argv[optind], len );
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destination[len-1] = '\0';
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}
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else
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{
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cerr << "smb4k_mv: There are too many arguments" << endl;
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exit( EXIT_FAILURE );
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}
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optind++;
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}
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}
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int i;
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// Change owner and group:
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char chown_prog[255];
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chown_prog[0] = '\0';
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if ( !find_program( "chown", chown_prog ) )
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{
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exit( EXIT_FAILURE );
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}
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char *chown_argv[] = { chown_prog, user_group, source, NULL };
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if ( fork() == 0 )
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{
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if ( (i = execve( chown_argv[0], chown_argv, envp )) == -1 )
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{
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int err = errno;
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cerr << "smb4k_mv: " << strerror( err ) << endl;
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exit( EXIT_FAILURE );
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}
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}
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else
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{
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wait( &i );
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}
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// Apply new permissions:
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char chmod_prog[255];
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chmod_prog[0] = '\0';
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if ( !find_program( "chmod", chmod_prog ) )
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{
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exit( EXIT_FAILURE );
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}
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char *chmod_argv[] = { chmod_prog, permissions, source, NULL };
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if ( fork() == 0 )
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{
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if ( (i = execve( chmod_argv[0], chmod_argv, envp )) == -1 )
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{
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int err = errno;
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cerr << "smb4k_mv: " << strerror( err ) << endl;
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exit( EXIT_FAILURE );
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}
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}
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else
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{
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wait( &i );
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}
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// Now, finally, move the file:
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char mv_prog[255];
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mv_prog[0] = '\0';
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if ( !find_program( "mv", mv_prog ) )
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{
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exit( EXIT_FAILURE );
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}
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char *mv_argv[] = { mv_prog, source, destination, NULL };
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if ( fork() == 0 )
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{
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if ( (i = execve( mv_argv[0], mv_argv, envp )) == -1 )
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{
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int err = errno;
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cerr << "smb4k_mv: " << strerror( err ) << endl;
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exit( EXIT_FAILURE );
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}
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}
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else
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{
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wait( &i );
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}
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return EXIT_SUCCESS;
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}
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