usr.sbin/adduser/adduser.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2002-2004 Michael Telahun Makonnen. All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions
   7 # are met:
   8 # 1. Redistributions of source code must retain the above copyright
   9 #    notice, this list of conditions and the following disclaimer.
  10 # 2. Redistributions in binary form must reproduce the above copyright
  11 #    notice, this list of conditions and the following disclaimer in the
  12 #    documentation and/or other materials provided with the distribution.
  13 #
  14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24 #
  25 #       Email: Mike Makonnen <mtm@FreeBSD.Org>
  26 #
  27 # $FreeBSD: src/usr.sbin/adduser/adduser.sh,v 1.31 2007/10/20 00:45:31 mtm Exp $
  28 # $DragonFly: src/usr.sbin/adduser/adduser.sh,v 1.3 2008/05/18 03:02:53 pavalos Exp $
  29 #
  30
  31 # err msg
  32 #       Display $msg on stderr, unless we're being quiet.
  33 #
  34 err() {
  35         if [ -z "$quietflag" ]; then
  36                 echo 1>&2 ${THISCMD}: ERROR: $*
  37         fi
  38 }
  39
  40 # info msg
  41 #       Display $msg on stdout, unless we're being quiet.
  42 #
  43 info() {
  44         if [ -z "$quietflag" ]; then
  45                 echo ${THISCMD}: INFO: $*
  46         fi
  47 }
  48
  49 # get_nextuid
  50 #       Output the value of $_uid if it is available for use. If it
  51 #       is not, output the value of the next higher uid that is available.
  52 #       If a uid is not specified, output the first available uid, as indicated
  53 #       by pw(8).
  54 #
  55 get_nextuid () {
  56         _uid=$1
  57         _nextuid=
  58
  59         if [ -z "$_uid" ]; then
  60                 _nextuid="`${PWCMD} usernext | cut -f1 -d:`"
  61         else
  62                 while : ; do
  63                         ${PWCMD} usershow $_uid > /dev/null 2>&1
  64                         if [ ! "$?" -eq 0 ]; then
  65                                 _nextuid=$_uid
  66                                 break
  67                         fi
  68                         _uid=$(($_uid + 1))
  69                 done
  70         fi
  71         echo $_nextuid
  72 }
  73
  74 # show_usage
  75 #       Display usage information for this utility.
  76 #
  77 show_usage() {
  78         echo "usage: ${THISCMD} [options]"
  79         echo "  options may include:"
  80         echo "  -C              save to the configuration file only"
  81         echo "  -D              do not attempt to create the home directory"
  82         echo "  -E              disable this account after creation"
  83         echo "  -G              additional groups to add accounts to"
  84         echo "  -L              login class of the user"
  85         echo "  -N              do not read configuration file"
  86         echo "  -S              a nonexistent shell is not an error"
  87         echo "  -d              home directory"
  88         echo "  -f              file from which input will be received"
  89         echo "  -g              default login group"
  90         echo "  -h              display this usage message"
  91         echo "  -k              path to skeleton home directory"
  92         echo "  -m              user welcome message file"
  93         echo "  -q              absolute minimal user feedback"
  94         echo "  -s              shell"
  95         echo "  -u              uid to start at"
  96         echo "  -w              password type: no, none, yes or random"
  97 }
  98
  99 # valid_shells
 100 #       Outputs a list of valid shells from /etc/shells. Only the
 101 #       basename of the shell is output.
 102 #
 103 valid_shells() {
 104         _prefix=
 105         cat ${ETCSHELLS} |
 106         while read _path _junk ; do
 107                 case $_path in
 108                 \#*|'')
 109                         ;;
 110                 *)
 111                         echo -n "${_prefix}`basename $_path`"
 112                         _prefix=' '
 113                         ;;
 114                 esac
 115         done
 116
 117         # /sbin/nologin is a special case
 118         [ -x "${NOLOGIN_PATH}" ] && echo -n " ${NOLOGIN}"
 119 }
 120
 121 # fullpath_from_shell shell
 122 #       Given $shell, which is either the full path to a shell or
 123 #       the basename component of a valid shell, get the
 124 #       full path to the shell from the /etc/shells file.
 125 #
 126 fullpath_from_shell() {
 127         _shell=$1
 128         [ -z "$_shell" ] && return 1
 129
 130         # /sbin/nologin is a special case; it needs to be handled
 131         # before the cat | while loop, since a 'return' from within
 132         # a subshell will not terminate the function's execution, and
 133         # the path to the nologin shell might be printed out twice.
 134         #
 135         if [ "$_shell" = "${NOLOGIN}" -o \
 136             "$_shell" = "${NOLOGIN_PATH}" ]; then
 137                 echo ${NOLOGIN_PATH}
 138                 return 0;
 139         fi
 140
 141         cat ${ETCSHELLS} |
 142         while read _path _junk ; do
 143                 case "$_path" in
 144                 \#*|'')
 145                         ;;
 146                 *)
 147                         if [ "$_path" = "$_shell" -o \
 148                             "`basename $_path`" = "$_shell" ]; then
 149                                 echo $_path
 150                                 return 0
 151                         fi
 152                         ;;
 153                 esac
 154         done
 155
 156         return 1
 157 }
 158
 159 # shell_exists shell
 160 #       If the given shell is listed in ${ETCSHELLS} or it is
 161 #       the nologin shell this function will return 0.
 162 #       Otherwise, it will return 1. If shell is valid but
 163 #       the path is invalid or it is not executable it
 164 #       will emit an informational message saying so.
 165 #
 166 shell_exists()
 167 {
 168         _sh="$1"
 169         _shellchk="${GREPCMD} '^$_sh$' ${ETCSHELLS} > /dev/null 2>&1"
 170
 171         if ! eval $_shellchk; then
 172                 # The nologin shell is not listed in /etc/shells.
 173                 if [ "$_sh" != "${NOLOGIN_PATH}" ]; then
 174                         err "Invalid shell ($_sh) for user $username."
 175                         return 1
 176                 fi
 177         fi
 178         ! [ -x "$_sh" ] &&
 179             info "The shell ($_sh) does not exist or is not executable."
 180
 181         return 0
 182 }
 183
 184 # save_config
 185 #       Save some variables to a configuration file.
 186 #       Note: not all script variables are saved, only those that
 187 #             it makes sense to save.
 188 #
 189 save_config() {
 190         echo "# Configuration file for adduser(8)."     >  ${ADDUSERCONF}
 191         echo "# NOTE: only *some* variables are saved." >> ${ADDUSERCONF}
 192         echo "# Last Modified on `${DATECMD}`."         >> ${ADDUSERCONF}
 193         echo ''                         >> ${ADDUSERCONF}
 194         echo "defaultLgroup=$ulogingroup" >> ${ADDUSERCONF}
 195         echo "defaultclass=$uclass"     >> ${ADDUSERCONF}
 196         echo "defaultgroups=$ugroups"   >> ${ADDUSERCONF}
 197         echo "passwdtype=$passwdtype"   >> ${ADDUSERCONF}
 198         echo "homeprefix=$homeprefix"   >> ${ADDUSERCONF}
 199         echo "defaultshell=$ushell"     >> ${ADDUSERCONF}
 200         echo "udotdir=$udotdir"         >> ${ADDUSERCONF}
 201         echo "msgfile=$msgfile"         >> ${ADDUSERCONF}
 202         echo "disableflag=$disableflag" >> ${ADDUSERCONF}
 203         echo "uidstart=$uidstart"       >> ${ADDUSERCONF}
 204 }
 205
 206 # add_user
 207 #       Add a user to the user database. If the user chose to send a welcome
 208 #       message or lock the account, do so.
 209 #
 210 add_user() {
 211
 212         # Is this a configuration run? If so, don't modify user database.
 213         #
 214         if [ -n "$configflag" ]; then
 215                 save_config
 216                 return
 217         fi
 218
 219         _uid=
 220         _name=
 221         _comment=
 222         _gecos=
 223         _home=
 224         _group=
 225         _grouplist=
 226         _shell=
 227         _class=
 228         _dotdir=
 229         _expire=
 230         _pwexpire=
 231         _passwd=
 232         _upasswd=
 233         _passwdmethod=
 234
 235         _name="-n '$username'"
 236         [ -n "$uuid" ] && _uid='-u "$uuid"'
 237         [ -n "$ulogingroup" ] && _group='-g "$ulogingroup"'
 238         [ -n "$ugroups" ] && _grouplist='-G "$ugroups"'
 239         [ -n "$ushell" ] && _shell='-s "$ushell"'
 240         [ -n "$uclass" ] && _class='-L "$uclass"'
 241         [ -n "$ugecos" ] && _comment='-c "$ugecos"'
 242         [ -n "$udotdir" ] && _dotdir='-k "$udotdir"'
 243         [ -n "$uexpire" ] && _expire='-e "$uexpire"'
 244         [ -n "$upwexpire" ] && _pwexpire='-p "$upwexpire"'
 245         if [ -z "$Dflag" -a -n "$uhome" ]; then
 246                 # The /nonexistent home directory is special. It
 247                 # means the user has no home directory.
 248                 if [ "$uhome" = "$NOHOME" ]; then
 249                         _home='-d "$uhome"'
 250                 else
 251                         _home='-m -d "$uhome"'
 252                 fi
 253         elif [ -n "$Dflag" -a -n "$uhome" ]; then
 254                 _home='-d "$uhome"'
 255         fi
 256         case $passwdtype in
 257         no)
 258                 _passwdmethod="-w no"
 259                 _passwd="-h -"
 260                 ;;
 261         yes)
 262                 # Note on processing the password: The outer double quotes
 263                 # make literal everything except ` and \ and $.
 264                 # The outer single quotes make literal ` and $.
 265                 # We can ensure the \ isn't treated specially by specifying
 266                 # the -r switch to the read command used to obtain the input.
 267                 #
 268                 _passwdmethod="-w yes"
 269                 _passwd="-h 0"
 270                 _upasswd='echo "$upass" |'
 271                 ;;
 272         none)
 273                 _passwdmethod="-w none"
 274                 ;;
 275         random)
 276                 _passwdmethod="-w random"
 277                 ;;
 278         esac
 279
 280         _pwcmd="$_upasswd ${PWCMD} useradd $_uid $_name $_group $_grouplist $_comment"
 281         _pwcmd="$_pwcmd $_shell $_class $_home $_dotdir $_passwdmethod $_passwd"
 282         _pwcmd="$_pwcmd $_expire $_pwexpire"
 283
 284         if ! _output=`eval $_pwcmd` ; then
 285                 err "There was an error adding user ($username)."
 286                 return 1
 287         else
 288                 info "Successfully added ($username) to the user database."
 289                 if [ "random" = "$passwdtype" ]; then
 290                         randompass="$_output"
 291                         info "Password for ($username) is: $randompass"
 292                 fi
 293         fi
 294
 295         if [ -n "$disableflag" ]; then
 296                 if ${PWCMD} lock $username ; then
 297                         info "Account ($username) is locked."
 298                 else
 299                         info "Account ($username) could NOT be locked."
 300                 fi
 301         fi
 302
 303         _line=
 304         _owner=
 305         _perms=
 306         if [ -n "$msgflag" ]; then
 307                 [ -r "$msgfile" ] && {
 308                         # We're evaluating the contents of an external file.
 309                         # Let's not open ourselves up for attack. _perms will
 310                         # be empty if it's writeable only by the owner. _owner
 311                         # will *NOT* be empty if the file is owned by root.
 312                         #
 313                         _dir="`dirname $msgfile`"
 314                         _file="`basename $msgfile`"
 315                         _perms=`/usr/bin/find $_dir -name $_file -perm +07022 -prune`
 316                         _owner=`/usr/bin/find $_dir -name $_file -user 0 -prune`
 317                         if [ -z "$_owner" -o -n "$_perms" ]; then
 318                                 err "The message file ($msgfile) may be writeable only by root."
 319                                 return 1
 320                         fi
 321                         cat "$msgfile" |
 322                         while read _line ; do
 323                                 eval echo "$_line"
 324                         done | ${MAILCMD} -s"Welcome" ${username}
 325                         info "Sent welcome message to ($username)."
 326                 }
 327         fi
 328 }
 329
 330 # get_user
 331 #       Reads username of the account from standard input or from a global
 332 #       variable containing an account line from a file. The username is
 333 #       required. If this is an interactive session it will prompt in
 334 #       a loop until a username is entered. If it is batch processing from
 335 #       a file it will output an error message and return to the caller.
 336 #
 337 get_user() {
 338         _input=
 339
 340         # No need to take down user names if this is a configuration saving run.
 341         [ -n "$configflag" ] && return
 342
 343         while : ; do
 344                 if [ -z "$fflag" ]; then
 345                         echo -n "Username: "
 346                         read _input
 347                 else
 348                         _input="`echo "$fileline" | cut -f1 -d:`"
 349                 fi
 350
 351                 # There *must* be a username, and it must not exist. If
 352                 # this is an interactive session give the user an
 353                 # opportunity to retry.
 354                 #
 355                 if [ -z "$_input" ]; then
 356                         err "You must enter a username!"
 357                         [ -z "$fflag" ] && continue
 358                 fi
 359                 ${PWCMD} usershow $_input > /dev/null 2>&1
 360                 if [ "$?" -eq 0 ]; then
 361                         err "User exists!"
 362                         [ -z "$fflag" ] && continue
 363                 fi
 364                 break
 365         done
 366         username="$_input"
 367 }
 368
 369 # get_gecos
 370 #       Reads extra information about the user. Can be used both in interactive
 371 #       and batch (from file) mode.
 372 #
 373 get_gecos() {
 374         _input=
 375
 376         # No need to take down additional user information for a configuration run.
 377         [ -n "$configflag" ] && return
 378
 379         if [ -z "$fflag" ]; then
 380                 echo -n "Full name: "
 381                 read _input
 382         else
 383                 _input="`echo "$fileline" | cut -f7 -d:`"
 384         fi
 385         ugecos="$_input"
 386 }
 387
 388 # get_shell
 389 #       Get the account's shell. Works in interactive and batch mode. It
 390 #       accepts either the base name of the shell or the full path.
 391 #       If an invalid shell is entered it will simply use the default shell.
 392 #
 393 get_shell() {
 394         _input=
 395         _fullpath=
 396         ushell="$defaultshell"
 397
 398         # Make sure the current value of the shell is a valid one
 399         if [ -z "$Sflag" ]; then
 400                 if ! shell_exists $ushell ; then
 401                         info "Using default shell ${defaultshell}."
 402                         ushell="$defaultshell"
 403                 fi
 404         fi
 405
 406         if [ -z "$fflag" ]; then
 407                 echo -n "Shell ($shells) [`basename $ushell`]: "
 408                 read _input
 409         else
 410                 _input="`echo "$fileline" | cut -f9 -d:`"
 411         fi
 412         if [ -n "$_input" ]; then
 413                 if [ -n "$Sflag" ]; then
 414                         ushell="$_input"
 415                 else
 416                         _fullpath=`fullpath_from_shell $_input`
 417                         if [ -n "$_fullpath" ]; then
 418                                 ushell="$_fullpath"
 419                         else
 420                                 err "Invalid shell ($_input) for user $username."
 421                                 info "Using default shell ${defaultshell}."
 422                                 ushell="$defaultshell"
 423                         fi
 424                 fi
 425         fi
 426 }
 427
 428 # get_homedir
 429 #       Reads the account's home directory. Used both with interactive input
 430 #       and batch input.
 431 #
 432 get_homedir() {
 433         _input=
 434         if [ -z "$fflag" ]; then
 435                 echo -n "Home directory [${homeprefix}/${username}]: "
 436                 read _input
 437         else
 438                 _input="`echo "$fileline" | cut -f8 -d:`"
 439         fi
 440
 441         if [ -n "$_input" ]; then
 442                 uhome="$_input"
 443                 # if this is a configuration run, then user input is the home
 444                 # directory prefix. Otherwise it is understood to
 445                 # be $prefix/$user
 446                 #
 447                 [ -z "$configflag" ] && homeprefix="`dirname $uhome`" || homeprefix="$uhome"
 448         else
 449                 uhome="${homeprefix}/${username}"
 450         fi
 451 }
 452
 453 # get_uid
 454 #       Reads a numeric userid in an interactive or batch session. Automatically
 455 #       allocates one if it is not specified.
 456 #
 457 get_uid() {
 458         uuid=${uidstart}
 459         _input=
 460         _prompt=
 461
 462         if [ -n "$uuid" ]; then
 463                 _prompt="Uid [$uuid]: "
 464         else
 465                 _prompt="Uid (Leave empty for default): "
 466         fi
 467         if [ -z "$fflag" ]; then
 468                 echo -n "$_prompt"
 469                 read _input
 470         else
 471                 _input="`echo "$fileline" | cut -f2 -d:`"
 472         fi
 473
 474         [ -n "$_input" ] && uuid=$_input
 475         uuid=`get_nextuid $uuid`
 476         uidstart=$uuid
 477 }
 478
 479 # get_class
 480 #       Reads login class of account. Can be used in interactive or batch mode.
 481 #
 482 get_class() {
 483         uclass="$defaultclass"
 484         _input=
 485         _class=${uclass:-"default"}
 486
 487         if [ -z "$fflag" ]; then
 488                 echo -n "Login class [$_class]: "
 489                 read _input
 490         else
 491                 _input="`echo "$fileline" | cut -f4 -d:`"
 492         fi
 493
 494         [ -n "$_input" ] && uclass="$_input"
 495 }
 496
 497 # get_logingroup
 498 #       Reads user's login group. Can be used in both interactive and batch
 499 #       modes. The specified value can be a group name or its numeric id.
 500 #       This routine leaves the field blank if nothing is provided and
 501 #       a default login group has not been set. The pw(8) command
 502 #       will then provide a login group with the same name as the username.
 503 #
 504 get_logingroup() {
 505         ulogingroup="$defaultLgroup"
 506         _input=
 507
 508         if [ -z "$fflag" ]; then
 509                 echo -n "Login group [${ulogingroup:-$username}]: "
 510                 read _input
 511         else
 512                 _input="`echo "$fileline" | cut -f3 -d:`"
 513         fi
 514
 515         # Pw(8) will use the username as login group if it's left empty
 516         [ -n "$_input" ] && ulogingroup="$_input"
 517 }
 518
 519 # get_groups
 520 #       Read additional groups for the user. It can be used in both interactive
 521 #       and batch modes.
 522 #
 523 get_groups() {
 524         ugroups="$defaultgroups"
 525         _input=
 526         _group=${ulogingroup:-"${username}"}
 527
 528         if [ -z "$configflag" ]; then
 529                 [ -z "$fflag" ] && echo -n "Login group is $_group. Invite $username"
 530                 [ -z "$fflag" ] && echo -n " into other groups? [$ugroups]: "
 531         else
 532                 [ -z "$fflag" ] && echo -n "Enter additional groups [$ugroups]: "
 533         fi
 534         read _input
 535
 536         [ -n "$_input" ] && ugroups="$_input"
 537 }
 538
 539 # get_expire_dates
 540 #       Read expiry information for the account and also for the password. This
 541 #       routine is used only from batch processing mode.
 542 #
 543 get_expire_dates() {
 544         upwexpire="`echo "$fileline" | cut -f5 -d:`"
 545         uexpire="`echo "$fileline" | cut -f6 -d:`"
 546 }
 547
 548 # get_password
 549 #       Read the password in batch processing mode. The password field matters
 550 #       only when the password type is "yes" or "random". If the field is empty and the
 551 #       password type is "yes", then it assumes the account has an empty passsword
 552 #       and changes the password type accordingly. If the password type is "random"
 553 #       and the password field is NOT empty, then it assumes the account will NOT
 554 #       have a random password and set passwdtype to "yes."
 555 #
 556 get_password() {
 557         # We may temporarily change a password type. Make sure it's changed
 558         # back to whatever it was before we process the next account.
 559         #
 560         [ -n "$savedpwtype" ] && {
 561                 passwdtype=$savedpwtype
 562                 savedpwtype=
 563         }
 564
 565         # There may be a ':' in the password
 566         upass=${fileline#*:*:*:*:*:*:*:*:*:}
 567
 568         if [ -z "$upass" ]; then
 569                 case $passwdtype in
 570                 yes)
 571                         # if it's empty, assume an empty password
 572                         passwdtype=none
 573                         savedpwtype=yes
 574                         ;;
 575                 esac
 576         else
 577                 case $passwdtype in
 578                 random)
 579                         passwdtype=yes
 580                         savedpwtype=random
 581                         ;;
 582                 esac
 583         fi
 584 }
 585
 586 # input_from_file
 587 #       Reads a line of account information from standard input and
 588 #       adds it to the user database.
 589 #
 590 input_from_file() {
 591         _field=
 592
 593         while read -r fileline ; do
 594                 case "$fileline" in
 595                 \#*|'')
 596                         ;;
 597                 *)
 598                         get_user || continue
 599                         get_gecos
 600                         get_uid
 601                         get_logingroup
 602                         get_class
 603                         get_shell
 604                         get_homedir
 605                         get_password
 606                         get_expire_dates
 607                         ugroups="$defaultgroups"
 608
 609                         add_user
 610                         ;;
 611                 esac
 612         done
 613 }
 614
 615 # input_interactive
 616 #       Prompts for user information interactively, and commits to
 617 #       the user database.
 618 #
 619 input_interactive() {
 620
 621         _disable=
 622         _pass=
 623         _passconfirm=
 624         _random="no"
 625         _emptypass="no"
 626         _usepass="yes"
 627         _logingroup_ok="no"
 628         _groups_ok="no"
 629         case $passwdtype in
 630         none)
 631                 _emptypass="yes"
 632                 _usepass="yes"
 633                 ;;
 634         no)
 635                 _usepass="no"
 636                 ;;
 637         random)
 638                 _random="yes"
 639                 ;;
 640         esac
 641
 642         get_user
 643         get_gecos
 644         get_uid
 645
 646         # The case where group = user is handled elsewhere, so
 647         # validate any other groups the user is invited to.
 648         until [ "$_logingroup_ok" = yes ]; do
 649                 get_logingroup
 650                 _logingroup_ok=yes
 651                 if [ -n "$ulogingroup" -a "$username" != "$ulogingroup" ]; then
 652                         if ! ${PWCMD} show group $ulogingroup > /dev/null 2>&1; then
 653                                 echo "Group $ulogingroup does not exist!"
 654                                 _logingroup_ok=no
 655                         fi
 656                 fi
 657         done
 658         until [ "$_groups_ok" = yes ]; do
 659                 get_groups
 660                 _groups_ok=yes
 661                 for i in $ugroups; do
 662                         if [ "$username" != "$i" ]; then
 663                                 if ! ${PWCMD} show group $i > /dev/null 2>&1; then
 664                                         echo "Group $i does not exist!"
 665                                         _groups_ok=no
 666                                 fi
 667                         fi
 668                 done
 669         done
 670
 671         get_class
 672         get_shell
 673         get_homedir
 674
 675         while : ; do
 676                 echo -n "Use password-based authentication? [$_usepass]: "
 677                 read _input
 678                 [ -z "$_input" ] && _input=$_usepass
 679                 case $_input in
 680                 [Nn][Oo]|[Nn])
 681                         passwdtype="no"
 682                         ;;
 683                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 684                         while : ; do
 685                                 echo -n "Use an empty password? (yes/no) [$_emptypass]: "
 686                                 read _input
 687                                 [ -n "$_input" ] && _emptypass=$_input
 688                                 case $_emptypass in
 689                                 [Nn][Oo]|[Nn])
 690                                         echo -n "Use a random password? (yes/no) [$_random]: "
 691                                         read _input
 692                                         [ -n "$_input" ] && _random="$_input"
 693                                         case $_random in
 694                                         [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 695                                                 passwdtype="random"
 696                                                 break
 697                                                 ;;
 698                                         esac
 699                                         passwdtype="yes"
 700                                         [ -n "$configflag" ] && break
 701                                         trap 'stty echo; exit' 0 1 2 3 15
 702                                         stty -echo
 703                                         echo -n "Enter password: "
 704                                         read -r upass
 705                                         echo''
 706                                         echo -n "Enter password again: "
 707                                         read -r _passconfirm
 708                                         echo ''
 709                                         stty echo
 710                                         # if user entered a blank password
 711                                         # explicitly ask again.
 712                                         [ -z "$upass" -a -z "$_passconfirm" ] \
 713                                             && continue
 714                                         ;;
 715                                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 716                                         passwdtype="none"
 717                                         break;
 718                                         ;;
 719                                 *)
 720                                         # invalid answer; repeat the loop
 721                                         continue
 722                                         ;;
 723                                 esac
 724                                 if [ "$upass" != "$_passconfirm" ]; then
 725                                         echo "Passwords did not match!"
 726                                         continue
 727                                 fi
 728                                 break
 729                         done
 730                         ;;
 731                 *)
 732                         # invalid answer; repeat loop
 733                         continue
 734                         ;;
 735                 esac
 736                 break;
 737         done
 738         _disable=${disableflag:-"no"}
 739         while : ; do
 740                 echo -n "Lock out the account after creation? [$_disable]: "
 741                 read _input
 742                 [ -z "$_input" ] && _input=$_disable
 743                 case $_input in
 744                 [Nn][Oo]|[Nn])
 745                         disableflag=
 746                         ;;
 747                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 748                         disableflag=yes
 749                         ;;
 750                 *)
 751                         # invalid answer; repeat loop
 752                         continue
 753                         ;;
 754                 esac
 755                 break
 756         done
 757
 758         # Display the information we have so far and prompt to
 759         # commit it.
 760         #
 761         _disable=${disableflag:-"no"}
 762         [ -z "$configflag" ] && printf "%-10s : %s\n" Username $username
 763         case $passwdtype in
 764         yes)
 765                 _pass='*****'
 766                 ;;
 767         no)
 768                 _pass='<disabled>'
 769                 ;;
 770         none)
 771                 _pass='<blank>'
 772                 ;;
 773         random)
 774                 _pass='<random>'
 775                 ;;
 776         esac
 777         [ -z "$configflag" ] && printf "%-10s : %s\n" "Password" "$_pass"
 778         [ -n "$configflag" ] && printf "%-10s : %s\n" "Pass Type" "$passwdtype"
 779         [ -z "$configflag" ] && printf "%-10s : %s\n" "Full Name" "$ugecos"
 780         [ -z "$configflag" ] && printf "%-10s : %s\n" "Uid" "$uuid"
 781         printf "%-10s : %s\n" "Class" "$uclass"
 782         printf "%-10s : %s %s\n" "Groups" "${ulogingroup:-$username}" "$ugroups"
 783         printf "%-10s : %s\n" "Home" "$uhome"
 784         printf "%-10s : %s\n" "Shell" "$ushell"
 785         printf "%-10s : %s\n" "Locked" "$_disable"
 786         while : ; do
 787                 echo -n "OK? (yes/no): "
 788                 read _input
 789                 case $_input in
 790                 [Nn][Oo]|[Nn])
 791                         return 1
 792                         ;;
 793                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 794                         add_user
 795                         ;;
 796                 *)
 797                         continue
 798                         ;;
 799                 esac
 800                 break
 801         done
 802         return 0
 803 }
 804
 805 #### END SUBROUTINE DEFINITION ####
 806
 807 THISCMD=`/usr/bin/basename $0`
 808 DEFAULTSHELL=/bin/sh
 809 ADDUSERCONF="${ADDUSERCONF:-/etc/adduser.conf}"
 810 PWCMD="${PWCMD:-/usr/sbin/pw}"
 811 MAILCMD="${MAILCMD:-mail}"
 812 ETCSHELLS="${ETCSHELLS:-/etc/shells}"
 813 NOHOME="/nonexistent"
 814 NOLOGIN="nologin"
 815 NOLOGIN_PATH="/sbin/nologin"
 816 GREPCMD="/usr/bin/grep"
 817 DATECMD="/bin/date"
 818
 819 # Set default values
 820 #
 821 username=
 822 uuid=
 823 uidstart=
 824 ugecos=
 825 ulogingroup=
 826 uclass=
 827 uhome=
 828 upass=
 829 ushell=
 830 udotdir=/usr/share/skel
 831 ugroups=
 832 uexpire=
 833 upwexpire=
 834 shells="`valid_shells`"
 835 passwdtype="yes"
 836 msgfile=/etc/adduser.msg
 837 msgflag=
 838 quietflag=
 839 configflag=
 840 fflag=
 841 infile=
 842 disableflag=
 843 Dflag=
 844 Sflag=
 845 readconfig="yes"
 846 homeprefix="/home"
 847 randompass=
 848 fileline=
 849 savedpwtype=
 850 defaultclass=
 851 defaultLgroup=
 852 defaultgroups=
 853 defaultshell="${DEFAULTSHELL}"
 854
 855 # Make sure the user running this program is root. This isn't a security
 856 # measure as much as it is a useful method of reminding the user to
 857 # 'su -' before he/she wastes time entering data that won't be saved.
 858 #
 859 procowner=${procowner:-`/usr/bin/id -u`}
 860 if [ "$procowner" != "0" ]; then
 861         err 'you must be the super-user (uid 0) to use this utility.'
 862         exit 1
 863 fi
 864
 865 # Overide from our conf file
 866 # Quickly go through the commandline line to see if we should read
 867 # from our configuration file. The actual parsing of the commandline
 868 # arguments happens after we read in our configuration file (commandline
 869 # should override configuration file).
 870 #
 871 for _i in $* ; do
 872         if [ "$_i" = "-N" ]; then
 873                 readconfig=
 874                 break;
 875         fi
 876 done
 877 if [ -n "$readconfig" ]; then
 878         # On a long-lived system, the first time this script is run it
 879         # will barf upon reading the configuration file for its perl predecessor.
 880         if ( . ${ADDUSERCONF} > /dev/null 2>&1 ); then
 881                 [ -r ${ADDUSERCONF} ] && . ${ADDUSERCONF} > /dev/null 2>&1
 882         fi
 883 fi
 884
 885 # Proccess command-line options
 886 #
 887 for _switch ; do
 888         case $_switch in
 889         -L)
 890                 defaultclass="$2"
 891                 shift; shift
 892                 ;;
 893         -C)
 894                 configflag=yes
 895                 shift
 896                 ;;
 897         -D)
 898                 Dflag=yes
 899                 shift
 900                 ;;
 901         -E)
 902                 disableflag=yes
 903                 shift
 904                 ;;
 905         -k)
 906                 udotdir="$2"
 907                 shift; shift
 908                 ;;
 909         -f)
 910                 [ "$2" != "-" ] && infile="$2"
 911                 fflag=yes
 912                 shift; shift
 913                 ;;
 914         -g)
 915                 defaultLgroup="$2"
 916                 shift; shift
 917                 ;;
 918         -G)
 919                 defaultgroups="$2"
 920                 shift; shift
 921                 ;;
 922         -h)
 923                 show_usage
 924                 exit 0
 925                 ;;
 926         -d)
 927                 homeprefix="$2"
 928                 shift; shift
 929                 ;;
 930         -m)
 931                 case "$2" in
 932                 [Nn][Oo])
 933                         msgflag=
 934                         ;;
 935                 *)
 936                         msgflag=yes
 937                         msgfile="$2"
 938                         ;;
 939                 esac
 940                 shift; shift
 941                 ;;
 942         -N)
 943                 readconfig=
 944                 shift
 945                 ;;
 946         -w)
 947                 case "$2" in
 948                 no|none|random|yes)
 949                         passwdtype=$2
 950                         ;;
 951                 *)
 952                         show_usage
 953                         exit 1
 954                         ;;
 955                 esac
 956                 shift; shift
 957                 ;;
 958         -q)
 959                 quietflag=yes
 960                 shift
 961                 ;;
 962         -s)
 963                 defaultshell="`fullpath_from_shell $2`"
 964                 shift; shift
 965                 ;;
 966         -S)
 967                 Sflag=yes
 968                 shift
 969                 ;;
 970         -u)
 971                 uidstart=$2
 972                 shift; shift
 973                 ;;
 974         esac
 975 done
 976
 977 # If the -f switch was used, get input from a file. Otherwise,
 978 # this is an interactive session.
 979 #
 980 if [ -n "$fflag" ]; then
 981         if [ -z "$infile" ]; then
 982                 input_from_file
 983         elif [ -n "$infile" ]; then
 984                 if [ -r "$infile" ]; then
 985                         input_from_file < $infile
 986                 else
 987                         err "File ($infile) is unreadable or does not exist."
 988                 fi
 989         fi
 990 else
 991         input_interactive
 992         while : ; do
 993                 if [ -z "$configflag" ]; then
 994                         echo -n "Add another user? (yes/no): "
 995                 else
 996                         echo -n "Re-edit the default configuration? (yes/no): "
 997                 fi
 998                 read _input
 999                 case $_input in
1000                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
1001                         uidstart=`get_nextuid $uidstart`
1002                         input_interactive
1003                         continue
1004                         ;;
1005                 [Nn][Oo]|[Nn])
1006                         echo "Goodbye!"
1007                         ;;
1008                 *)
1009                         continue
1010                         ;;
1011                 esac
1012                 break
1013         done
1014 fi