mirror of
https://git.busybox.net/busybox.git
synced 2024-11-28 08:03:28 +08:00
315 lines
6.4 KiB
C
315 lines
6.4 KiB
C
/*
|
|
* Mini chown/chmod/chgrp implementation for busybox
|
|
*
|
|
* Copyright (C) 1998 by Erik Andersen <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 int uid=-1;
|
|
static int gid=0;
|
|
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[] = "[OPTION]... GROUP FILE...\n"
|
|
"Change the group membership of each FILE to GROUP.\n"
|
|
"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
|
|
static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
|
|
"Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
|
|
"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
|
|
static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\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"
|
|
"\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) < 0)
|
|
return( TRUE);
|
|
case CHMOD_APP:
|
|
fprintf(stderr, "%s, %d\n", fileName, mode);
|
|
if (chmod(fileName, mode))
|
|
return( TRUE);
|
|
}
|
|
perror(fileName);
|
|
return( FALSE);
|
|
}
|
|
|
|
int chmod_chown_chgrp_main(int argc, char **argv)
|
|
{
|
|
struct group *grp;
|
|
struct passwd *pwd;
|
|
int recursiveFlag=FALSE;
|
|
char *groupName;
|
|
|
|
whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
|
|
|
|
if (argc < 2) {
|
|
fprintf(stderr, "Usage: %s %s", *argv,
|
|
(whichApp==TRUE)? chown_usage : chgrp_usage);
|
|
exit( FALSE);
|
|
}
|
|
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);
|
|
exit( FALSE);
|
|
}
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if ( whichApp == CHMOD_APP ) {
|
|
/* Find the specified modes */
|
|
mode &= S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
|
|
if ( parse_mode(*argv, &mode) == FALSE ) {
|
|
fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
|
|
exit( FALSE);
|
|
}
|
|
//mode &= andWithMode;
|
|
fprintf(stderr, "mode %d\n", mode);
|
|
} else {
|
|
|
|
/* Find the selected group */
|
|
groupName = strchr(*argv, '.');
|
|
if ( whichApp==TRUE && groupName )
|
|
*groupName++ = '\0';
|
|
else
|
|
groupName = *argv;
|
|
grp = getgrnam(groupName);
|
|
if (grp == NULL) {
|
|
fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
|
|
exit( FALSE);
|
|
}
|
|
gid = grp->gr_gid;
|
|
|
|
/* Find the selected user (if appropriate) */
|
|
if (whichApp==TRUE) {
|
|
pwd = getpwnam(*argv);
|
|
if (pwd == NULL) {
|
|
fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
|
|
exit( FALSE);
|
|
}
|
|
uid = pwd->pw_uid;
|
|
}
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef fooo
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#include "internal.h"
|
|
#include <pwd.h>
|
|
#include <grp.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
|
|
int my_getid(const char *filename, const char *name, uid_t *id)
|
|
{
|
|
FILE *stream;
|
|
uid_t rid;
|
|
char *rname, *start, *end, buf[128];
|
|
|
|
stream=fopen(filename,"r");
|
|
|
|
while (fgets (buf, 128, stream) != NULL) {
|
|
if (buf[0] == '#')
|
|
continue;
|
|
|
|
start = buf;
|
|
end = strchr (start, ':');
|
|
if (end == NULL)
|
|
continue;
|
|
*end = '\0';
|
|
rname = start;
|
|
|
|
start = end + 1;
|
|
end = strchr (start, ':');
|
|
if (end == NULL)
|
|
continue;
|
|
|
|
start = end + 1;
|
|
rid = (uid_t) strtol (start, &end, 10);
|
|
if (end == start)
|
|
continue;
|
|
|
|
if (name) {
|
|
if (0 == strcmp(rname, name)) {
|
|
*id=rid;
|
|
return 0;
|
|
}
|
|
} else {
|
|
if ( *id == rid )
|
|
return 0;
|
|
}
|
|
}
|
|
fclose(stream);
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
my_getpwuid(uid_t *uid)
|
|
{
|
|
return my_getid("/etc/passwd", NULL, uid);
|
|
}
|
|
|
|
int
|
|
my_getpwnam(char *name, uid_t *uid)
|
|
{
|
|
return my_getid("/etc/passwd", name, uid);
|
|
}
|
|
|
|
int
|
|
my_getgrgid(gid_t *gid)
|
|
{
|
|
return my_getid("/etc/group", NULL, gid);
|
|
}
|
|
|
|
int
|
|
my_getgrnam(char *name, gid_t *gid)
|
|
{
|
|
return my_getid("/etc/group", name, gid);
|
|
}
|
|
|
|
const char chown_usage[] = "chown [-R] user-name file [file ...]\n"
|
|
"\n\tThe group list is kept in the file /etc/groups.\n\n"
|
|
"\t-R:\tRecursively change the mode of all files and directories\n"
|
|
"\t\tunder the argument directory.";
|
|
|
|
int
|
|
parse_user_name(const char * s, struct FileInfo * i)
|
|
{
|
|
char * dot = strchr(s, '.');
|
|
char * end = NULL;
|
|
uid_t id = 0;
|
|
|
|
if (! dot )
|
|
dot = strchr(s, ':');
|
|
|
|
if ( dot )
|
|
*dot = '\0';
|
|
|
|
if ( my_getpwnam(s,&id) == -1 ) {
|
|
id = strtol(s,&end,10);
|
|
if ((*end != '\0') || ( my_getpwuid(&id) == -1 )) {
|
|
fprintf(stderr, "%s: no such user.\n", s);
|
|
return 1;
|
|
}
|
|
}
|
|
i->userID = id;
|
|
|
|
if ( dot ) {
|
|
if ( my_getgrnam(++dot,&id) == -1 ) {
|
|
id = strtol(dot,&end,10);
|
|
if ((*end != '\0') || ( my_getgrgid(&id) == -1 )) {
|
|
fprintf(stderr, "%s: no such group.\n", dot);
|
|
return 1;
|
|
}
|
|
}
|
|
i->groupID = id;
|
|
i->changeGroupID = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
extern int
|
|
chown_main(struct FileInfo * i, int argc, char * * argv)
|
|
{
|
|
int status;
|
|
|
|
while ( argc >= 3 && strcmp("-R", argv[1]) == 0 ) {
|
|
i->recursive = 1;
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if ( (status = parse_user_name(argv[1], i)) != 0 )
|
|
return status;
|
|
|
|
argv++;
|
|
argc--;
|
|
|
|
i->changeUserID = 1;
|
|
i->complainInPostProcess = 1;
|
|
|
|
return monadic_main(i, argc, argv);
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif
|