diff options
Diffstat (limited to 'deluser.c')
| -rw-r--r-- | deluser.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/deluser.c b/deluser.c deleted file mode 100644 index bb6e109..0000000 --- a/deluser.c +++ /dev/null @@ -1,175 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * deluser (remove lusers from the system ;) for TinyLogin - * - * - * Copyright (C) 1999 by Lineo, inc. - * Written by John Beppu <beppu@lineo.com> - * - * 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" - -#define PASSWD_FILE "/etc/passwd" -#define GROUP_FILE "/etc/group" - -/* 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 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(char *login, 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) { - show_usage(); - } else { - - failure = del_line_matching(argv[1], GROUP_FILE); -#ifdef TLG_FEATURE_SHADOWPASSWDS - if (access(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], GSHADOW_FILE); - } -#endif /* TLG_FEATURE_SHADOWPASSWDS */ - /* if (!successful) { */ - if (failure) { - error_msg_and_die("%s: Group could not be removed\n", argv[1]); - } - - } - return (EXIT_SUCCESS); -} - -/* ________________________________________________________________________ */ -int deluser_main(int argc, char **argv) -{ - /* int successful; */ - int failure; - - if (argc != 2) { - show_usage(); - } else { - - failure = del_line_matching(argv[1], PASSWD_FILE); - /* if (!successful) { */ - if (failure) { - error_msg_and_die("%s: User could not be removed from %s\n", - argv[1], PASSWD_FILE); - } -#ifdef TLG_FEATURE_SHADOWPASSWDS - failure = del_line_matching(argv[1], SHADOW_FILE); - /* if (!successful) { */ - if (failure) { - error_msg_and_die("%s: User could not be removed from %s\n", - argv[1], SHADOW_FILE); - } -#endif /* TLG_FEATURE_SHADOWPASSWDS */ - failure = del_line_matching(argv[1], GROUP_FILE); - /* if (!successful) { */ - if (failure) { - error_msg_and_die("%s: User could not be removed from %s\n", - argv[1], GROUP_FILE); - } - - } - return (EXIT_SUCCESS); -} - -/* $Id: deluser.c,v 1.1 2001/08/21 16:18:59 andersen Exp $ */ |