oamuser/user/userdel.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */


/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <ctype.h>
#include <limits.h>
#include <pwd.h>
#include <project.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <userdefs.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <strings.h>
#include "users.h"
#include "messages.h"
#include "funcs.h"

/*
 *  userdel [-r ] login
 *
 *  This command deletes user logins.  Arguments are:
 *
 *  -r - when given, this option removes home directory & its contents
 *
 *  login - a string of printable chars except colon (:)
 */

extern int check_perm(), isbusy(), get_default_zfs_flags();
extern int rm_files(), call_passmgmt(), edit_group();

static char *logname;           /* login name to delete */
static char *nargv[20];     /* arguments for execvp of passmgmt */

char *cmdname;

int
main(int argc, char **argv)
{
    int ch, ret = 0, rflag = 0;
    int zfs_flags = 0, argindex, tries;
    struct passwd *pstruct;
    struct stat statbuf;
#ifndef att
    FILE *pwf;      /* fille ptr for opened passwd file */
#endif
    char *usertype = NULL;
    int rc;

    cmdname = argv[0];

    if (geteuid() != 0) {
        errmsg(M_PERM_DENIED);
        exit(EX_NO_PERM);
    }

    opterr = 0;         /* no print errors from getopt */
    usertype = getusertype(argv[0]);

    while ((ch = getopt(argc, argv, "r")) != EOF) {
        switch (ch) {
            case 'r':
                rflag++;
                break;
            case '?':
                if (is_role(usertype))
                    errmsg(M_DRUSAGE);
                else
                    errmsg(M_DUSAGE);
                exit(EX_SYNTAX);
        }
    }

    if (optind != argc - 1) {
        if (is_role(usertype))
            errmsg(M_DRUSAGE);
        else
            errmsg(M_DUSAGE);
        exit(EX_SYNTAX);
    }

    logname = argv[optind];

#ifdef att
    pstruct = getpwnam(logname);
#else
    /*
     * Do this with fgetpwent to make sure we are only looking on local
     * system (since passmgmt only works on local system).
     */
    if ((pwf = fopen("/etc/passwd", "r")) == NULL) {
        errmsg(M_OOPS, "open", "/etc/passwd");
        exit(EX_FAILURE);
    }
    while ((pstruct = fgetpwent(pwf)) != NULL)
        if (strcmp(pstruct->pw_name, logname) == 0)
            break;

    fclose(pwf);
#endif

    if (pstruct == NULL) {
        errmsg(M_EXIST, logname);
        exit(EX_NAME_NOT_EXIST);
    }

    if (isbusy(logname)) {
        errmsg(M_BUSY, logname, "remove");
        exit(EX_BUSY);
    }

    /* that's it for validations - now do the work */
    /* set up arguments to  passmgmt in nargv array */
    nargv[0] = PASSMGMT;
    nargv[1] = "-d";    /* delete */
    argindex = 2;       /* next argument */

    /* finally - login name */
    nargv[argindex++] = logname;

    /* set the last to null */
    nargv[argindex++] = NULL;

    /* remove home directory */
    if (rflag) {
        /* Check Permissions */
        if (stat(pstruct->pw_dir, &statbuf)) {
            errmsg(M_OOPS, "find status about home directory",
                strerror(errno));
            exit(EX_HOMEDIR);
        }

        if (check_perm(statbuf, pstruct->pw_uid, pstruct->pw_gid,
            S_IWOTH|S_IXOTH) != 0) {
            errmsg(M_NO_PERM, logname, pstruct->pw_dir);
            exit(EX_HOMEDIR);
        }
        zfs_flags = get_default_zfs_flags();

        if (rm_files(pstruct->pw_dir, logname, zfs_flags) != EX_SUCCESS)
            exit(EX_HOMEDIR);
    }

    /* now call passmgmt */
    ret = PEX_FAILED;
    for (tries = 3; ret != PEX_SUCCESS && tries--; ) {
        switch (ret = call_passmgmt(nargv)) {
        case PEX_SUCCESS:
            ret = edit_group(logname, (char *)0, (int **)0, 1);
            if (ret != EX_SUCCESS)
                errmsg(M_UPDATE, "deleted");
            break;

        case PEX_BUSY:
            break;

        case PEX_HOSED_FILES:
            errmsg(M_HOSED_FILES);
            exit(EX_INCONSISTENT);
            break;

        case PEX_SYNTAX:
        case PEX_BADARG:
            /* should NEVER occur that passmgmt usage is wrong */
            if (is_role(usertype))
                errmsg(M_DRUSAGE);
            else
                errmsg(M_DUSAGE);
            exit(EX_SYNTAX);
            break;

        case PEX_BADUID:
        /*
         * uid is used - shouldn't happen but print message anyway
         */
            errmsg(M_UID_USED, pstruct->pw_uid);
            exit(EX_ID_EXISTS);
            break;

        case PEX_BADNAME:
            /* invalid loname */
            errmsg(M_USED, logname);
            exit(EX_NAME_EXISTS);
            break;

        default:
            errmsg(M_UPDATE, "deleted");
            exit(ret);
            break;
        }
    }
    if (tries == 0)
        errmsg(M_UPDATE, "deleted");

/*
 * Now, remove this user from all project entries
 */

    rc = edit_project(logname, (char *)0, (projid_t **)0, 1);
    if (rc != EX_SUCCESS) {
        errmsg(M_UPDATE, "modified");
        exit(rc);
    }

    exit(ret);
    /*NOTREACHED*/
}