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/*
* Mini chown/chmod/chgrp implementation for busybox
*
*
* Copyright (C) 1999 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include <grp.h>
#include <pwd.h>
#include "internal.h"
static uid_t uid=-1;
static gid_t gid=-1;
static int whichApp;
static char* invocationName=NULL;
static mode_t mode=0644;
#define CHGRP_APP 1
#define CHOWN_APP 2
#define CHMOD_APP 3
static const char chgrp_usage[] = "chgrp [OPTION]... GROUP FILE...\n\n"
"Change the group membership of each FILE to GROUP.\n"
"\nOptions:\n\t-R\tchange files and directories recursively\n";
static const char chown_usage[] = "chown [OPTION]... OWNER[.[GROUP] FILE...\n\n"
"Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
"\nOptions:\n\t-R\tchange files and directories recursively\n";
static const char chmod_usage[] = "chmod [-R] MODE[,MODE]... FILE...\n\n"
"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
"one or more of the letters rwxst.\n\n"
"\nOptions:\n\t-R\tchange files and directories recursively.\n";
static int fileAction(const char *fileName, struct stat* statbuf)
{
switch (whichApp) {
case CHGRP_APP:
case CHOWN_APP:
if (chown(fileName, (whichApp==CHOWN_APP)? uid : statbuf->st_uid,
(gid==-1)? statbuf->st_gid : gid) == 0) {
return( TRUE);
}
break;
case CHMOD_APP:
if (chmod(fileName, mode) == 0)
return( TRUE);
break;
}
perror(fileName);
return( FALSE);
}
int chmod_chown_chgrp_main(int argc, char **argv)
{
int recursiveFlag=FALSE;
char *groupName;
const char *appUsage;
whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
appUsage = (whichApp==CHOWN_APP)? chown_usage : (whichApp==CHMOD_APP)? chmod_usage : chgrp_usage;
if (argc < 2)
usage( appUsage);
invocationName=*argv;
argc--;
argv++;
/* Parse options */
while (**argv == '-') {
while (*++(*argv)) switch (**argv) {
case 'R':
recursiveFlag = TRUE;
break;
default:
fprintf(stderr, "Unknown option: %c\n", **argv);
usage( appUsage);
}
argc--;
argv++;
}
if ( whichApp == CHMOD_APP ) {
/* Find the specified modes */
mode = 0;
if ( parse_mode(*argv, &mode) == FALSE ) {
fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
exit( FALSE);
}
} else {
/* Find the selected group */
if ( whichApp==CHGRP_APP ) {
groupName = *argv;
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else {
groupName = strchr(*argv, '.');
if (groupName) {
*groupName++ = '\0';
gid = my_getgrnam(groupName);
if (gid == -1)
goto bad_group;
} else
gid = -1;
}
/* Find the selected user (if appropriate) */
if (whichApp==CHOWN_APP) {
uid = my_getpwnam(*argv);
if (uid == -1) {
fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
exit( FALSE);
}
}
}
/* Ok, ready to do the deed now */
if (argc <= 1) {
fprintf(stderr, "%s: too few arguments", invocationName);
exit( FALSE);
}
while (argc-- > 1) {
if (recursiveAction( *(++argv), recursiveFlag, TRUE, FALSE, fileAction, fileAction)==FALSE)
exit( FALSE);
}
exit(TRUE);
bad_group:
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
exit( FALSE);
}
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