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  • Committer: Scott Moser
  • Date: 2011-05-27 16:06:28 UTC
  • mfrom: (68.1.6 oneiric)
  • Revision ID: smoser@ubuntu.com-20110527160628-t1lo3pfw92ef8vnf
https://launchpad.net/bugs/788888
* Resynchronise with Debian (LP: #788888).  Remaining changes:
  - [udeb] Enable chvt, getopt (and -l), killall, losetup, NFS
    mount, od, ping, stat, and remote syslog.
  - [deb] Enable mdev.
  - [deb, static] Enable fractional sleep and CGI support for httpd.
  - Enable 'mount -f' and mount helpers for all targets.
  - Add busybox-initramfs.
  - test-bin.patch: Move test and friends to /bin.
  - static-sh-alias.patch: Add static-sh alias name for ash, and install
    /bin/static-sh symlink to busybox in busybox-static.
  - Add cross-compiling support.
* grep-o-loop.patch: dropped as fix and testcase in upstream

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loginutils/deluser.c
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 * Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
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 * Copyright (C) 2007 by Tito Ragusa <farmatito@tiscali.it>
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 *
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 * Licensed under GPL version 2, see file LICENSE in this tarball for details.
 
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 * Licensed under GPLv2, see file LICENSE in this source tree.
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 *
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 */
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#include "libbb.h"
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static int del_line_matching(char **args, const char *filename)
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{
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        if (ENABLE_FEATURE_DEL_USER_FROM_GROUP && args[2]) {
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                return update_passwd(filename, args[2], NULL, args[1]);
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        }
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        return update_passwd(filename, args[1], NULL, NULL);
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}
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int deluser_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int deluser_main(int argc, char **argv)
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{
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        if (argc != 2
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         && (!ENABLE_FEATURE_DEL_USER_FROM_GROUP
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            || (applet_name[3] != 'g' || argc != 3))
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        ) {
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                bb_show_usage();
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        }
 
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        /* User or group name */
 
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        char *name;
 
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        /* Username (non-NULL only in "delgroup USER GROUP" case) */
 
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        char *member;
 
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        /* Name of passwd or group file */
 
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        const char *pfile;
 
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        /* Name of shadow or gshadow file */
 
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        const char *sfile;
 
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        /* Are we deluser or delgroup? */
 
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        int do_deluser = (ENABLE_DELUSER && (!ENABLE_DELGROUP || applet_name[3] == 'u'));
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        if (geteuid())
 
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        if (geteuid() != 0)
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                bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
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        if ((ENABLE_FEATURE_DEL_USER_FROM_GROUP && argc != 3)
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         || ENABLE_DELUSER
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         || (ENABLE_DELGROUP && ENABLE_DESKTOP)
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        ) {
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                if (ENABLE_DELUSER
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                 && (!ENABLE_DELGROUP || applet_name[3] == 'u')
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                ) {
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                        if (del_line_matching(argv, bb_path_passwd_file) < 0)
 
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        name = argv[1];
 
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        member = NULL;
 
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        switch (argc) {
 
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        case 3:
 
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                if (!ENABLE_FEATURE_DEL_USER_FROM_GROUP || do_deluser)
 
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                        break;
 
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                /* It's "delgroup USER GROUP" */
 
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                member = name;
 
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                name = argv[2];
 
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                /* Fallthrough */
 
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        case 2:
 
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                if (do_deluser) {
 
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                        /* "deluser USER" */
 
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                        xgetpwnam(name); /* bail out if USER is wrong */
 
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                        pfile = bb_path_passwd_file;
 
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                        if (ENABLE_FEATURE_SHADOWPASSWDS)
 
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                                sfile = bb_path_shadow_file;
 
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                } else {
 
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                        struct group *gr;
 
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 do_delgroup:
 
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                        /* "delgroup GROUP" or "delgroup USER GROUP" */
 
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                        if (do_deluser < 0) { /* delgroup after deluser? */
 
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                                gr = getgrnam(name);
 
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                                if (!gr)
 
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                                        return EXIT_SUCCESS;
 
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                        } else {
 
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                                gr = xgetgrnam(name); /* bail out if GROUP is wrong */
 
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                        }
 
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                        if (!member) {
 
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                                /* "delgroup GROUP" */
 
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                                struct passwd *pw;
 
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                                struct passwd pwent;
 
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                                /* Check if the group is in use */
 
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#define passwd_buf bb_common_bufsiz1
 
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                                while (!getpwent_r(&pwent, passwd_buf, sizeof(passwd_buf), &pw)) {
 
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                                        if (pwent.pw_gid == gr->gr_gid)
 
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                                                bb_error_msg_and_die("'%s' still has '%s' as their primary group!", pwent.pw_name, name);
 
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                                }
 
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                                //endpwent();
 
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                        }
 
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                        pfile = bb_path_group_file;
 
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                        if (ENABLE_FEATURE_SHADOWPASSWDS)
 
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                                sfile = bb_path_gshadow_file;
 
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                }
 
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                /* Modify pfile, then sfile */
 
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                do {
 
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                        if (update_passwd(pfile, name, NULL, member) == -1)
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                                return EXIT_FAILURE;
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                        if (ENABLE_FEATURE_SHADOWPASSWDS) {
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                                del_line_matching(argv, bb_path_shadow_file);
 
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                                pfile = sfile;
 
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                                sfile = NULL;
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                        }
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                } else if (ENABLE_DESKTOP && ENABLE_DELGROUP && getpwnam(argv[1]))
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                        bb_error_msg_and_die("can't remove primary group of user %s", argv[1]);
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        }
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        if (del_line_matching(argv, bb_path_group_file) < 0)
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                return EXIT_FAILURE;
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        if (ENABLE_FEATURE_SHADOWPASSWDS) {
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                del_line_matching(argv, bb_path_gshadow_file);
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        }
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        return EXIT_SUCCESS;
 
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                } while (ENABLE_FEATURE_SHADOWPASSWDS && pfile);
 
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                if (ENABLE_DELGROUP && do_deluser > 0) {
 
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                        /* "deluser USER" also should try to delete
 
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                         * same-named group. IOW: do "delgroup USER"
 
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                         */
 
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// On debian deluser is a perl script that calls userdel.
 
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// From man userdel:
 
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//  If USERGROUPS_ENAB is defined to yes in /etc/login.defs, userdel will
 
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//  delete the group with the same name as the user.
 
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                        do_deluser = -1;
 
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                        goto do_delgroup;
 
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                }
 
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                return EXIT_SUCCESS;
 
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        }
 
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        /* Reached only if number of command line args is wrong */
 
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        bb_show_usage();
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}