mirror of https://github.com/sheumann/hush.git
315 lines
6.4 KiB
C
315 lines
6.4 KiB
C
/*
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* Mini chown/chmod/chgrp implementation for busybox
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*
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* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
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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,
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* but 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 Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include <grp.h>
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#include <pwd.h>
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#include "internal.h"
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static int uid=-1;
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static int gid=0;
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static int whichApp;
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static char* invocationName=NULL;
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static mode_t mode=0644;
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#define CHGRP_APP 1
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#define CHOWN_APP 2
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#define CHMOD_APP 3
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static const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n"
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"Change the group membership of each FILE to GROUP.\n"
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"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
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static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
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"Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
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"\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
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static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\n"
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"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
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"one or more of the letters rwxst.\n\n"
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"\t-R\tchange files and directories recursively.\n";
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static int fileAction(const char *fileName, struct stat* statbuf)
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{
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switch (whichApp) {
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case CHGRP_APP:
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case CHOWN_APP:
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if (chown(fileName, ((whichApp==CHOWN_APP)? uid: statbuf->st_uid), gid) < 0)
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return( TRUE);
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case CHMOD_APP:
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fprintf(stderr, "%s, %d\n", fileName, mode);
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if (chmod(fileName, mode))
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return( TRUE);
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}
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perror(fileName);
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return( FALSE);
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}
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int chmod_chown_chgrp_main(int argc, char **argv)
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{
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struct group *grp;
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struct passwd *pwd;
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int recursiveFlag=FALSE;
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char *groupName;
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whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
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if (argc < 2) {
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fprintf(stderr, "Usage: %s %s", *argv,
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(whichApp==TRUE)? chown_usage : chgrp_usage);
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exit( FALSE);
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}
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invocationName=*argv;
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argc--;
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argv++;
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/* Parse options */
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while (**argv == '-') {
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while (*++(*argv)) switch (**argv) {
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case 'R':
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recursiveFlag = TRUE;
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break;
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default:
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fprintf(stderr, "Unknown option: %c\n", **argv);
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exit( FALSE);
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}
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argc--;
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argv++;
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}
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if ( whichApp == CHMOD_APP ) {
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/* Find the specified modes */
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mode &= S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
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if ( parse_mode(*argv, &mode) == FALSE ) {
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fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
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exit( FALSE);
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}
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//mode &= andWithMode;
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fprintf(stderr, "mode %d\n", mode);
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} else {
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/* Find the selected group */
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groupName = strchr(*argv, '.');
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if ( whichApp==TRUE && groupName )
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*groupName++ = '\0';
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else
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groupName = *argv;
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grp = getgrnam(groupName);
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if (grp == NULL) {
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fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
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exit( FALSE);
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}
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gid = grp->gr_gid;
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/* Find the selected user (if appropriate) */
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if (whichApp==TRUE) {
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pwd = getpwnam(*argv);
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if (pwd == NULL) {
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fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
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exit( FALSE);
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}
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uid = pwd->pw_uid;
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}
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}
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/* Ok, ready to do the deed now */
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if (argc <= 1) {
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fprintf(stderr, "%s: too few arguments", invocationName);
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exit( FALSE);
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}
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while (argc-- > 1) {
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if (recursiveAction( *(++argv), recursiveFlag, TRUE, FALSE, fileAction, fileAction)==FALSE)
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exit( FALSE);
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}
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exit(TRUE);
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}
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#ifdef fooo
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#include "internal.h"
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#include <pwd.h>
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#include <grp.h>
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#include <string.h>
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#include <stdio.h>
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int my_getid(const char *filename, const char *name, uid_t *id)
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{
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FILE *stream;
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uid_t rid;
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char *rname, *start, *end, buf[128];
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stream=fopen(filename,"r");
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while (fgets (buf, 128, stream) != NULL) {
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if (buf[0] == '#')
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continue;
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start = buf;
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end = strchr (start, ':');
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if (end == NULL)
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continue;
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*end = '\0';
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rname = start;
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start = end + 1;
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end = strchr (start, ':');
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if (end == NULL)
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continue;
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start = end + 1;
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rid = (uid_t) strtol (start, &end, 10);
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if (end == start)
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continue;
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if (name) {
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if (0 == strcmp(rname, name)) {
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*id=rid;
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return 0;
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}
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} else {
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if ( *id == rid )
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return 0;
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}
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}
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fclose(stream);
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return -1;
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}
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int
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my_getpwuid(uid_t *uid)
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{
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return my_getid("/etc/passwd", NULL, uid);
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}
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int
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my_getpwnam(char *name, uid_t *uid)
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{
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return my_getid("/etc/passwd", name, uid);
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}
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int
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my_getgrgid(gid_t *gid)
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{
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return my_getid("/etc/group", NULL, gid);
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}
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int
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my_getgrnam(char *name, gid_t *gid)
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{
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return my_getid("/etc/group", name, gid);
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}
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const char chown_usage[] = "chown [-R] user-name file [file ...]\n"
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"\n\tThe group list is kept in the file /etc/groups.\n\n"
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"\t-R:\tRecursively change the mode of all files and directories\n"
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"\t\tunder the argument directory.";
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int
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parse_user_name(const char * s, struct FileInfo * i)
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{
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char * dot = strchr(s, '.');
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char * end = NULL;
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uid_t id = 0;
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if (! dot )
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dot = strchr(s, ':');
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if ( dot )
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*dot = '\0';
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if ( my_getpwnam(s,&id) == -1 ) {
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id = strtol(s,&end,10);
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if ((*end != '\0') || ( my_getpwuid(&id) == -1 )) {
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fprintf(stderr, "%s: no such user.\n", s);
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return 1;
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}
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}
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i->userID = id;
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if ( dot ) {
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if ( my_getgrnam(++dot,&id) == -1 ) {
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id = strtol(dot,&end,10);
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if ((*end != '\0') || ( my_getgrgid(&id) == -1 )) {
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fprintf(stderr, "%s: no such group.\n", dot);
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return 1;
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}
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}
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i->groupID = id;
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i->changeGroupID = 1;
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}
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return 0;
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}
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extern int
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chown_main(struct FileInfo * i, int argc, char * * argv)
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{
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int status;
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while ( argc >= 3 && strcmp("-R", argv[1]) == 0 ) {
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i->recursive = 1;
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argc--;
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argv++;
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}
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if ( (status = parse_user_name(argv[1], i)) != 0 )
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return status;
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argv++;
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argc--;
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i->changeUserID = 1;
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i->complainInPostProcess = 1;
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return monadic_main(i, argc, argv);
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}
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#endif
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