decouple delgroup and deluser

This commit is contained in:
Eric Andersen 2003-07-14 20:20:45 +00:00
parent e5642119ee
commit 74f270a317
4 changed files with 183 additions and 120 deletions

View File

@ -25,13 +25,14 @@ endif
LOGINUTILS-y:= LOGINUTILS-y:=
LOGINUTILS-$(CONFIG_ADDGROUP) += addgroup.o LOGINUTILS-$(CONFIG_ADDGROUP) += addgroup.o
LOGINUTILS-$(CONFIG_ADDUSER) += adduser.o LOGINUTILS-$(CONFIG_ADDUSER) += adduser.o
LOGINUTILS-$(CONFIG_DELUSER) += deluser.o
LOGINUTILS-$(CONFIG_GETTY) += getty.o LOGINUTILS-$(CONFIG_GETTY) += getty.o
LOGINUTILS-$(CONFIG_LOGIN) += login.o LOGINUTILS-$(CONFIG_LOGIN) += login.o
LOGINUTILS-$(CONFIG_PASSWD) += passwd.o LOGINUTILS-$(CONFIG_PASSWD) += passwd.o
LOGINUTILS-$(CONFIG_SU) += su.o LOGINUTILS-$(CONFIG_SU) += su.o
LOGINUTILS-$(CONFIG_SULOGIN) += sulogin.o LOGINUTILS-$(CONFIG_SULOGIN) += sulogin.o
LOGINUTILS-$(CONFIG_VLOCK) += vlock.o LOGINUTILS-$(CONFIG_VLOCK) += vlock.o
LOGINUTILS-$(CONFIG_DELUSER) += deluser.o
LOGINUTILS-$(CONFIG_DELGROUP) += delgroup.o
libraries-y+=$(LOGINUTILS_DIR)$(LOGINUTILS_AR) libraries-y+=$(LOGINUTILS_DIR)$(LOGINUTILS_AR)

60
loginutils/delgroup.c Normal file
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@ -0,0 +1,60 @@
/* vi: set sw=4 ts=4: */
/*
* deluser (remove lusers from the system ;) for TinyLogin
*
* Copyright (C) 1999 by Lineo, inc. and John Beppu
* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.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 <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "busybox.h"
#if ! defined CONFIG_DELUSER
#include "delline.c"
#endif
int delgroup_main(int argc, char **argv)
{
/* int successful; */
int failure;
if (argc != 2) {
bb_show_usage();
} else {
failure = del_line_matching(argv[1], bb_path_group_file);
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
if (access(bb_path_gshadow_file, W_OK) == 0) {
/* EDR the |= works if the error is not 0, so he had it wrong */
failure |= del_line_matching(argv[1], bb_path_gshadow_file);
}
#endif
if (failure) {
bb_error_msg_and_die("%s: Group could not be removed\n", argv[1]);
}
}
return (EXIT_SUCCESS);
}
/* $Id: delgroup.c,v 1.1 2003/07/14 20:20:45 andersen Exp $ */

113
loginutils/delline.c Normal file
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@ -0,0 +1,113 @@
/* vi: set sw=4 ts=4: */
/*
* deluser (remove lusers from the system ;) for TinyLogin
*
* Copyright (C) 1999 by Lineo, inc. and John Beppu
* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.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 <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "busybox.h"
/* where to start and stop deletion */
typedef struct {
size_t start;
size_t stop;
} Bounds;
/* An interesting side-effect of boundary()'s
* implementation is that the first user (typically root)
* cannot be removed. Let's call it a feature. */
static inline Bounds boundary(const char *buffer, const char *login)
{
char needle[256];
char *start;
char *stop;
Bounds b;
snprintf(needle, 256, "\n%s:", login);
needle[255] = 0;
start = strstr(buffer, needle);
if (!start) {
b.start = 0;
b.stop = 0;
return b;
}
start++;
stop = index(start, '\n'); /* index is a BSD-ism */
b.start = start - buffer;
b.stop = stop - buffer;
return b;
}
/* grep -v ^login (except it only deletes the first match) */
/* ...in fact, I think I'm going to simplify this later */
static int del_line_matching(const char *login, const char *filename)
{
char *buffer;
FILE *passwd;
size_t len;
Bounds b;
struct stat statbuf;
/* load into buffer */
passwd = fopen(filename, "r");
if (!passwd) {
return 1;
}
stat(filename, &statbuf);
len = statbuf.st_size;
buffer = (char *) malloc(len * sizeof(char));
if (!buffer) {
fclose(passwd);
return 1;
}
fread(buffer, len, sizeof(char), passwd);
fclose(passwd);
/* find the user to remove */
b = boundary(buffer, login);
if (b.stop == 0) {
free(buffer);
return 1;
}
/* write the file w/o the user */
passwd = fopen(filename, "w");
if (!passwd) {
return 1;
}
fwrite(buffer, (b.start - 1), sizeof(char), passwd);
fwrite(&buffer[b.stop], (len - b.stop), sizeof(char), passwd);
fclose(passwd);
return 0;
}
/* $Id: delline.c,v 1.1 2003/07/14 20:20:45 andersen Exp $ */

View File

@ -29,113 +29,10 @@
#include "busybox.h" #include "busybox.h"
#include "delline.c"
/* where to start and stop deletion */ static const char deluser_format[]="%s: User could not be removed from %s";
typedef struct {
size_t start;
size_t stop;
} Bounds;
/* An interesting side-effect of boundary()'s
* implementation is that the first user (typically root)
* cannot be removed. Let's call it a feature. */
static inline Bounds boundary(const char *buffer, const char *login)
{
char needle[256];
char *start;
char *stop;
Bounds b;
snprintf(needle, 256, "\n%s:", login);
needle[255] = 0;
start = strstr(buffer, needle);
if (!start) {
b.start = 0;
b.stop = 0;
return b;
}
start++;
stop = index(start, '\n'); /* index is a BSD-ism */
b.start = start - buffer;
b.stop = stop - buffer;
return b;
}
/* grep -v ^login (except it only deletes the first match) */
/* ...in fact, I think I'm going to simplify this later */
static int del_line_matching(const char *login, const char *filename)
{
char *buffer;
FILE *passwd;
size_t len;
Bounds b;
struct stat statbuf;
/* load into buffer */
passwd = fopen(filename, "r");
if (!passwd) {
return 1;
}
stat(filename, &statbuf);
len = statbuf.st_size;
buffer = (char *) malloc(len * sizeof(char));
if (!buffer) {
fclose(passwd);
return 1;
}
fread(buffer, len, sizeof(char), passwd);
fclose(passwd);
/* find the user to remove */
b = boundary(buffer, login);
if (b.stop == 0) {
free(buffer);
return 1;
}
/* write the file w/o the user */
passwd = fopen(filename, "w");
if (!passwd) {
return 1;
}
fwrite(buffer, (b.start - 1), sizeof(char), passwd);
fwrite(&buffer[b.stop], (len - b.stop), sizeof(char), passwd);
fclose(passwd);
return 0;
}
/* ________________________________________________________________________ */
int delgroup_main(int argc, char **argv)
{
/* int successful; */
int failure;
if (argc != 2) {
bb_show_usage();
} else {
failure = del_line_matching(argv[1], bb_path_group_file);
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
if (access(bb_path_gshadow_file, W_OK) == 0) {
/* EDR the |= works if the error is not 0, so he had it wrong */
failure |= del_line_matching(argv[1], bb_path_gshadow_file);
}
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
/* if (!successful) { */
if (failure) {
bb_error_msg_and_die("%s: Group could not be removed\n", argv[1]);
}
}
return (EXIT_SUCCESS);
}
/* ________________________________________________________________________ */
int deluser_main(int argc, char **argv) int deluser_main(int argc, char **argv)
{ {
/* int successful; */ /* int successful; */
@ -146,34 +43,26 @@ int deluser_main(int argc, char **argv)
} else { } else {
failure = del_line_matching(argv[1], bb_path_passwd_file); failure = del_line_matching(argv[1], bb_path_passwd_file);
/* if (!successful) { */
if (failure) { if (failure) {
bb_error_msg_and_die("%s: User could not be removed from %s\n", bb_error_msg_and_die(deluser_format, argv[1], bb_path_passwd_file);
argv[1], bb_path_passwd_file);
} }
#ifdef CONFIG_FEATURE_SHADOWPASSWDS #ifdef CONFIG_FEATURE_SHADOWPASSWDS
failure = del_line_matching(argv[1], bb_path_shadow_file); failure = del_line_matching(argv[1], bb_path_shadow_file);
/* if (!successful) { */
if (failure) { if (failure) {
bb_error_msg_and_die("%s: User could not be removed from %s\n", bb_error_msg_and_die(deluser_format, argv[1], bb_path_shadow_file);
argv[1], bb_path_shadow_file);
} }
failure = del_line_matching(argv[1], bb_path_gshadow_file); failure = del_line_matching(argv[1], bb_path_gshadow_file);
/* if (!successful) { */
if (failure) { if (failure) {
bb_error_msg_and_die("%s: User could not be removed from %s\n", bb_error_msg_and_die(deluser_format, argv[1], bb_path_gshadow_file);
argv[1], bb_path_gshadow_file);
} }
#endif /* CONFIG_FEATURE_SHADOWPASSWDS */ #endif
failure = del_line_matching(argv[1], bb_path_group_file); failure = del_line_matching(argv[1], bb_path_group_file);
/* if (!successful) { */
if (failure) { if (failure) {
bb_error_msg_and_die("%s: User could not be removed from %s\n", bb_error_msg_and_die(deluser_format, argv[1], bb_path_group_file);
argv[1], bb_path_group_file);
} }
} }
return (EXIT_SUCCESS); return (EXIT_SUCCESS);
} }
/* $Id: deluser.c,v 1.3 2003/03/19 09:12:20 mjn3 Exp $ */ /* $Id: deluser.c,v 1.4 2003/07/14 20:20:45 andersen Exp $ */